CN107654532A - A torque limiter with constant output torque and increased rotational speed - Google Patents

Abstract

The invention belongs to the technical field of torque limiters, and particularly relates to a torque limiter with constant output torque and increased rotating speed, which comprises an input shaft, an input shell, a first fixing ring, a first fixing sleeve, an output shaft, a driving steel ball and the like; the first fixing sleeve is arranged on a fixing device of the equipment, so that the first fixing sleeve and the output shaft can be fixed conveniently; the end face of the first fixing ring is arranged on the end face of the first fixing sleeve, so that the second fixing sleeve can be fixed conveniently; the inner circular surface of the second fixed sleeve is arranged on the outer circular surface of the first fixed ring, so that the driving cylinder and the input shell can be conveniently fixed; the inner circle surface of the driving cylinder is provided with internal teeth for transmitting the motion on the driving cylinder to the driving gear; one end of the fixed shaft head is arranged on the end surface of the driving cylinder and is used for fixing the driving cylinder; the end of the driving cylinder far away from the end face of the second fixed sleeve is mounted on the end face of the second fixed sleeve and used for transmitting the motion of the driving steel ball to the driving gear.

Description

A torque limiter with constant output torque and increased rotational speed

Technical field

The invention belongs to the technical field of torque limiters, in particular to a torque limiter with constant output torque and increased rotation speed.

Background technique

At present, the existing torque limiter driven by steel balls changes the rotation speed of the output shaft on the torque limiter with the change of the rotation speed of the input shaft; when the torque limiter is in use, if the input shaft rotates at a high speed In this situation, the rotation speed on the output shaft will also increase, but the output torque value will not increase at this time; it may damage the output shaft on the torque limiter; thus the output end cannot be driven normally, when the output When the load on the shaft increases suddenly, the torque limiter will be damaged, which will affect the normal use of the torque limiter; therefore, it is necessary to design a torque limiter with constant output torque and increased rotation speed.

The present invention designs a torque limiter with constant output torque and increased rotation speed to solve the above problems.

Contents of the invention

In order to solve the above-mentioned defects in the prior art, the present invention discloses a torque limiter with constant output torque and increased rotation speed, which is realized by adopting the following technical solutions.

A torque limiter with constant output torque and increased rotational speed, characterized in that it includes an input shaft, an input shell, a first fixing ring, a first fixing sleeve, an output shaft, a driving steel ball, a torque adjustment mechanism, a driving sleeve, The second fixed sleeve, the first rotating shaft hole, the accommodation cavity, the through hole, the first driving blade, the second driving blade, the fixed shaft head, and the second rotating shaft hole, wherein the first fixing sleeve is installed on the fixing device requiring the device of the present invention ; The end surface of the first fixed ring is installed on the end surface of the first fixed sleeve; the inner circle of the second fixed sleeve is installed on the outer circle of the first fixed ring; the inner circle of the drive cylinder is provided with internal teeth; one end of the fixed shaft head is installed on the The end face of the drive cylinder; the end of the drive cylinder away from the fixed shaft head is installed on the end surface of the second fixed sleeve; the six second drive blades are evenly installed on the outer surface of the drive cylinder in the circumferential direction; the output shaft is installed on the first fixed sleeve and one end of the output shaft is installed in the second shaft hole opened on the drive cylinder and the fixed shaft head; the torque adjustment mechanism is installed in the drive cylinder, and the torque adjustment mechanism cooperates with the internal teeth on the drive cylinder and the output shaft ; There is a receiving chamber on the input housing; a through hole is opened on the end face of the receiving chamber; one end of the input shaft is installed on the end face of the input housing; a first rotating shaft hole is opened on the input housing and the input shaft; A rotating shaft hole is matched with the outer circular surface of the fixed shaft head and installed on the fixed shaft head, and the end face of the drive cylinder is matched with the end face of the receiving cavity on the input shell; the inner circular surface of the through hole is matched with the outer circular surface of the second fixed sleeve; 6 A drive vane is evenly installed on the inner circular surface of the accommodation chamber in the circumferential direction, and 6 first drive vanes and 6 second drive vanes are alternately distributed; many drive steel balls are installed in the accommodation chamber.

The above-mentioned torque adjustment mechanism includes a guide rail mechanism, a driving gear, a first fixed column, a second fixed column, a fixed shaft of the driving gear, a first one-way gear, a second one-way gear, a third one-way gear, a first fixed shaft, an output Gear, the second fixed stepped shaft, the third fixed shaft, the fourth gear, the fifth gear, and the sixth gear, the two ends of the two guide rail mechanisms are respectively connected by the first fixed column; the two guide rail mechanisms are located in the drive cylinder Inside; the guide rail mechanism is installed on the end face of the first fixed ring through two second fixing columns; the driving gear is installed between the two guide rail mechanisms through the drive gear fixing shaft; the output gear is installed on the output shaft, and the output gear is located on the drive cylinder One end of the first fixed shaft is installed in the hole opened on the first fixed ring; one end of the first one-way gear is installed on the first fixed shaft, and the first one-way gear cooperates with the driving gear; the fourth gear is installed on the On the first fixed shaft, and the fourth gear meshes with the output gear; one end of the second fixed stepped shaft is installed in the hole opened on the first fixed ring; one end of the second one-way gear is installed on the end face of the second fixed stepped shaft, And the second one-way gear cooperates with the driving gear; the fifth gear is installed on the end surface of the second fixed stepped shaft, and the fifth gear is meshed with the output gear; one end of the third fixed shaft is installed in the hole opened on the first fixed ring ; One end of the third one-way gear is installed on the end face of the third fixed shaft, and the third one-way gear cooperates with the driving gear; the sixth gear is installed on the end face of the third fixed shaft, and the sixth gear meshes with the output gear; The one-way gear, the second one-way gear, and the third one-way gear are distributed sequentially along the axis of the drive gear; the one-way driving directions of the first one-way gear, the second one-way gear, and the third one-way gear are the same; the fourth one-way gear The gear, the fifth gear and the sixth gear are distributed sequentially along the axis direction of the output gear.

The guide rail mechanism includes a square groove, a recovery spring, a guide groove, a T-shaped arc groove, an arc-shaped guide rail, a return spring, a clip, a T-shaped arc block, a guide block, a clip groove, a first slope, and a second slope, wherein the arc There are T-shaped arc grooves on the end surface of the guide rail; 3 groups of square grooves are opened on the inner wall of the T-shaped arc groove at 20 degrees; two square grooves in each group are located on the inner walls of both sides of the T-shaped arc groove, and the square grooves are not penetrated; the structure and installation structure on each square groove are exactly the same, for one of them, there are two unpenetrated guide grooves symmetrically on both sides of the square groove; Two slopes; two guide blocks are symmetrically installed on both sides of the block; the block is installed in the square groove through the cooperation of the guide groove and the guide block; the return spring is located in the square groove, and one end of the return spring is installed on the end face of the block , the other end is installed on the end face of the square groove; there are slots on both sides of the T-shaped arc block, and the slot has a first slope, and the first slope matches the second slope; the T-shaped arc block is installed on the T-shaped In the arc groove; the recovery spring is located in the T-shaped arc groove, one end of the recovery spring is installed on the inner wall of the T-shaped ring groove, and the other end is installed on the T-shaped arc block.

The above two first fixed columns are installed between the two arc-shaped guide rails; one end of the two second fixed columns is installed on the arc-shaped guide rail, and the other end is installed on the end face of the first fixed ring; the two ends of the fixed shaft of the driving gear are respectively installed On the end faces of the two T-shaped arc blocks; before the device is in use, the driving gear meshes with the third one-way gear; the diameter of the driving gear is D1 _; the diameter of the first one-way gear is D2; the _second one-way gear The diameter of the gear is D ₃ ; the diameter of the third one-way gear is D ₄ ; the diameter of the fourth gear is D ₅ ; the diameter of the fifth gear is D ₆ ; the diameter of the sixth gear is D ₇ ; the diameter of the output gear is D ₈ ; the ratio of D ₁ to D ₂ is 4/3; the ratio of D ₁ to D ₃ is 20/17; the ratio of D ₁ to D ₄ is 1/1; the ratio of D ₅ to D ₈ is 1/2 ; The ratio of D ₆ to D ₈ is 1/2; the ratio of D ₇ to D ₈ is 2/5.

As a further improvement of the present technology, the inclination angles of the above-mentioned first slope and the second slope are the same.

As a further improvement of this technology, the fourth gear is installed on the first fixed shaft through a key, the fifth gear is installed on the second fixed shaft through a key, and the sixth gear is installed on the third fixed shaft through a key.

As a further improvement of the technology, solid lubricating oil is coated between the T-shaped arc block and the T-shaped arc groove.

As a further improvement of this technology, the above-mentioned output gear is installed on the output shaft through a key.

As a further improvement of the present technology, the return spring is a compression spring.

As a further improvement of the present technology, the above-mentioned driving gear is installed on the fixed shaft of the driving gear through a bearing.

Compared with the traditional torque limiter technology, the first fixed sleeve of the present invention is installed on the fixing device requiring the equipment of the present invention to facilitate the fixing of the first fixed ring and the output shaft; the end face of the first fixed ring is installed on the end face of the first fixed sleeve The function on the top is to facilitate the fixing of the second fixed sleeve; the inner surface of the second fixed sleeve is installed on the outer surface of the first fixed ring to facilitate the fixing of the drive cylinder and the input shell; the inner surface of the drive cylinder is provided with internal teeth The function is to facilitate the transmission of the motion on the drive cylinder to the drive gear; the end of the fixed shaft head is installed on the end face of the drive cylinder to fix the drive cylinder; the end of the drive cylinder away from the fixed shaft head is installed on the second The function of the end surface of the fixed sleeve is to transmit the movement of the driving steel ball to the driving gear; the function of six second driving blades evenly installed on the outer surface of the driving cylinder in the circumferential direction is to facilitate the driving steel ball to drive the driving cylinder to move; the output shaft is installed In the first fixed sleeve, one end of the output shaft is installed in the second shaft hole opened on the drive cylinder and the fixed shaft head to drive the load movement of the output end; the torque adjustment mechanism is installed in the drive cylinder, and the torque adjustment mechanism The role of cooperating with the internal teeth on the drive cylinder and the output shaft is to adjust the torque value of the output end, so that the torque value of the output end remains unchanged; the role of the accommodation cavity on the input shell is to facilitate the accommodation of the drive cylinder; the end surface of the accommodation cavity The function of having a through hole is to facilitate the passage of the second fixed sleeve, so as to achieve the purpose of fixing the drive cylinder; the function of installing one end of the input shaft on the end surface of the input shell is to transmit the motion of the input end to the input shell; The function of opening the first rotating shaft hole is to fix the input shell and the input shaft; the input shell is installed on the fixed shaft head through the first rotating shaft hole opened on it and the outer circular surface of the fixed shaft head, and the end surface of the drive cylinder is aligned with the input shaft head. The function of matching the end face of the housing cavity on the shell is to form a closed cavity, so that the driving steel ball will not flow out of the housing cavity during the movement; The shell plays the purpose of auxiliary support; the 6 first driving blades are evenly installed on the inner circular surface of the housing chamber in the circumferential direction, and the staggered distribution of the 6 first driving blades and the 6 second driving blades is to drive the movement of the driving steel balls , at the same time, the first driving blade and the second driving blade will not interfere; a plurality of driving steel balls are installed in the accommodating cavity to facilitate the movement of the first driving blade.

The function of the torque adjustment mechanism in the present invention is to adjust the output torque value on the output shaft, so that the torque value on the output shaft remains unchanged, so as to achieve the purpose of overload protection for the equipment; The function of the connection of the first fixed column is to connect the two guide rail mechanisms; the function of the two guide rail mechanisms located in the drive cylinder is to guide the movement of the drive gear; the function of the guide rail mechanism to be installed on the end surface of the first fixed ring through the two second fixed columns It guides the movement of the driving gear and also supports the driving gear; the driving gear is installed between the two guide rail mechanisms through the fixed shaft of the driving gear to transmit the motion on the driving cylinder to the first one-way gear or the second one-way gear On the second one-way gear or the third one-way gear; the output gear is installed on the output shaft, and the output gear is located in the drive cylinder to transmit the motion of one of the fourth gear, the fifth gear and the sixth gear. To the output gear; one end of the first fixed shaft is installed in the hole opened on the first fixed ring to facilitate fixing the first one-way gear and the fourth gear; one end of the first one-way gear is installed on the first fixed shaft , and the role of the cooperation between the first one-way gear and the driving gear is to transmit the motion on the driving gear to the first fixed shaft; the fourth gear is installed on the first fixed shaft, and the role of the fourth gear meshing with the output gear is The motion on the first fixed shaft is transmitted to the output gear; one end of the second fixed stepped shaft is installed in the hole opened on the first fixed ring to facilitate fixing the second one-way gear and the fifth gear; the second one-way gear One end of the gear is installed on the end face of the second fixed stepped shaft, and the function of the cooperation between the second one-way gear and the driving gear is to transmit the motion on the driving gear to the second fixed shaft; the fifth gear is installed on the end face of the second fixed stepped shaft and the function of the fifth gear meshing with the output gear is to transmit the movement on the second fixed shaft to the output gear; the function of installing one end of the third fixed shaft in the hole opened on the first fixed ring is to facilitate the fixing of the second fixed shaft. Three one-way gears and the sixth gear; one end of the third one-way gear is installed on the end face of the third fixed shaft, and the third one-way gear cooperates with the driving gear to transmit the motion on the driving gear to the third fixed shaft ; The sixth gear is installed on the end face of the third fixed shaft, and the function of the sixth gear meshing with the output gear is to transmit the motion on the third fixed shaft to the output gear; the first one-way gear, the second one-way gear, The role of the third one-way gears being distributed sequentially along the direction of the drive gear axis is to prevent interference during the respective movements of the first one-way gear, the second one-way gear, and the third one-way gear; the first one-way gear, the second one-way gear The direction of the one-way drive of the gear and the third one-way gear is the same to make the output gear not drive the first one-way gear, the second one-way gear, the third one-way gear; the fourth gear, the fifth gear The role of the sixth gear distributed along the axis of the output gear in sequence is to prevent the phenomenon of no interference during the respective movements of the fourth gear, the fifth gear, and the sixth gear; the role of the guide rail mechanism is to guide the movement of the drive gear; the arc guide rail There is a T-shaped arc groove on the end face to facilitate the movement of the T-shaped arc block; the inner wall of the T-shaped arc groove is 20 degrees There are 3 sets of square grooves in order to cooperate with the blocks installed in it, so that the torque limiter in this equipment has 3 speed gears; two square grooves in each group are located on both sides of the T-shaped arc groove On the inner wall, the function of the square grooves not being penetrated is to facilitate the accommodation of the block; the function of two unpenetrated guide grooves symmetrically opened on both sides of the square groove is to cooperate with the guide block installed on the block to guide the block The purpose of movement; there are two second slopes symmetrically opened on both sides of one end of the block to cooperate with the first slope on the T-shaped arc block to achieve the purpose of restricting the movement of the T-shaped arc block; the block passes through the guide groove and the guide The function of the block fit in the square groove is to limit the movement of the T-shaped arc block; the return spring is located in the square groove, and one end of the return spring is installed on the end face of the block, and the other end is installed on the end face of the square groove. The T-shaped arc block has a restoring force; the T-shaped arc block is installed in the T-shaped arc groove to facilitate the installation of the drive gear fixed shaft, so as to achieve the purpose of guiding the drive gear to move; the recovery spring is located in the T-shaped arc groove, and the recovery spring One end is installed on the inner wall of the T-shaped ring groove, and the other end is installed on the T-shaped arc block to give a restoring force to the T-shaped arc block; when the device is in use, the driving gear meshes with the third one-way gear so that the initial The speed is small; the inclination angle of the first slope and the second slope is the same to facilitate the clamping block and the T-shaped arc block to play a limiting role; the T-shaped arc block and the T-shaped arc groove are coated with solid lubricating oil It is to facilitate better movement of the T-shaped arc block in the T-shaped arc groove.

During use, when there is no need to increase the rotation speed of the output shaft, the input end of the movement will drive the input shell to move, the input shell will drive the first drive blade to move, the first drive blade will drive the drive steel ball to move, and the drive The steel ball will drive the second drive blade to move, the second drive blade will drive the drive barrel to move, the drive barrel will drive the drive gear to move, the drive gear will drive the third one-way gear to move, the third one-way gear will drive The third fixed shaft moves, the third fixed shaft will drive the sixth gear to move, the sixth gear will drive the output gear to move, the output gear will drive the output shaft to move, and the output shaft will drive the load at the output end to move; when the output gear moves In the process, it will not drive the first one-way gear and the second one-way gear to move, so as to achieve the purpose of saving energy; when the output end needs a higher rotation speed, when the rotation speed of the input end increases to N ₁ , the driving gear at this time will move along the trajectory of the driving gear on the arc guide rail under the action of the acceleration force of the driving cylinder; thus the driving gear will mesh with the second one-way gear, and the driving gear at this time will Will drive the second one-way gear to move, the second one-way gear will drive the second fixed shaft to move, the second fixed shaft will drive the fifth gear to move, the fifth gear will drive the output gear to move, the output gear will Drive the output shaft to move; when the speed of the input end increases again, the driving gear at this time will mesh with the first one-way gear, and pass through the first one-way gear, the first fixed shaft, the fourth gear, and the output gear in turn, so as to achieve The purpose of driving the output shaft to move; the diameter of the driving gear is D ₁ ; the diameter of the first one-way gear is D ₂ ; the diameter of the second one-way gear is D ₃ ; the diameter of the third one-way gear is D ₄ ; the fourth The diameter of the gear is D5; the diameter of the _fifth gear is D6; the diameter of the _sixth gear is _D7 ; the diameter of the output gear is _{D8 ;} the _{ratio of} D1 to D2 is 4/3; D1 to _D3 The ratio of D ₁ to D ₄ is 1/1; the ratio of D ₅ to D ₈ is 1/2; the ratio of D ₆ to D ₈ is 1/2; the ratio of D ₇ to D ₈ The effect of being 2/5 is that when the rotation speed of the driving gear is N ₂ , when the driving gear meshes with the third one-way gear at this time, the rotation speed on the output shaft will be 0.4*N ₂ , when the driving When the rotation speed of the gear is N ₂ , when the driving gear meshes with the second one-way gear, the rotation speed on the output shaft will be 0.58*N ₂ , when the rotation speed of the driving gear is N ₂ , this When the driving gear meshes with the first one-way gear, the rotation speed on the output shaft will be 0.7*N ₂ , so the result of the rotation speed at the output end is 0.4*N ₂ <0.58*N ₂ <0.7*N _2. However, when the driving gear meshes with the third one-way gear, the second one-way gear, and the third one-way gear in sequence, the speed of the driving gear increases sequentially. When the speed on the driving gear passes through the fourth gear or the fifth gear change again When it is large, the torque value will decrease, but the rotation speed of the input shaft increases, and the torque value of the driving steel ball driving the first driving blade and the second driving blade becomes larger; the torque value on the output shaft does not increase at this time, When the load on the output shaft suddenly increases, increase the rotation speed on the input shaft, and the torque value on the output shaft at this time does not change, so that relative rotation occurs, and the purpose of protecting the output end equipment is achieved.

Description of drawings

Figure 1 is a schematic diagram of the distribution of the overall components.

Fig. 2 is a schematic diagram of the installation structure of the driving steel ball.

Fig. 3 is a schematic diagram of the structure of the input shell.

Fig. 4 is a schematic diagram of the installation structure of the first driving blade.

Fig. 5 is a schematic diagram of the installation structure of the second driving blade.

Fig. 6 is a schematic diagram of the structure of the drive cylinder.

Fig. 7 is a schematic diagram of the installation structure of the first fixing column.

Fig. 8 is a schematic diagram of the structure of the arc guide rail.

Fig. 9 is a schematic diagram of the block installation structure.

Figure 10 is a sectional view of the arc guide rail (1).

Figure 11 is a sectional view of the arc guide rail (2).

Fig. 12 is a schematic diagram of the installation structure of the driving gear.

Fig. 13 is a schematic diagram of the installation structure of the fourth gear.

Fig. 14 is a schematic diagram of the installation structure of the return spring.

Fig. 15 is a schematic diagram of the structure of the T-shaped arc block (1).

Fig. 16 is a schematic diagram of the structure of the T-shaped arc block (2).

Fig. 17 is a schematic diagram of the installation structure of the guide block.

Fig. 18 is a schematic diagram of the installation structure of the first one-way gear.

Fig. 19 is a schematic diagram of the installation structure of the second one-way gear.

Figure 20 is a schematic diagram of the driving gear movement (1).

Fig. 21 is a schematic diagram of driving gear movement (2).

Fig. 22 is a schematic diagram of the recovery spring installation structure.

Label names in the figure: 1. Input shaft; 2. Input shell; 3. First fixing ring; 4. First fixing sleeve; 5. Output shaft; 6. Driving steel ball; 7. Torque adjustment mechanism; 8. Driving cylinder; 9. Second fixed sleeve; 10. First shaft hole; 11. Through hole; 12. First drive blade; 13. Second drive blade; 14. Fixed shaft head; 15. Guide rail mechanism; 16. Second shaft hole ; 17, drive gear; 18, first fixed column; 19, second fixed column; 20, square groove; 21, guide groove; 22, T-shaped arc groove; 23, arc guide rail; 24, return spring; 25 , fast card; 26, T-shaped arc block; 27, drive gear fixed shaft; 28, the first one-way gear; 29, the second one-way gear; 30, the third one-way gear; 31, guide block; 32, the first 1 fixed shaft; 36, the second fixed stepped shaft; 37, the third fixed shaft; 38, the fourth gear; 39, the fifth gear; 40, the sixth gear; 41, the card slot; 42, the first slope; 43, The second inclined plane; 44, the motion track of the drive gear; 45, the accommodation cavity; 46, the output gear; 47, the recovery spring.

Detailed ways

As shown in Figures 1 and 2, it includes an input shaft 1, an input shell 2, a first fixing ring 3, a first fixing sleeve 4, an output shaft 5, a driving steel ball 6, a torque adjustment mechanism 7, a driving cylinder 8, and a second fixing Sleeve 9, first rotating shaft hole 10, accommodating chamber 45, through hole 11, first driving blade 12, second driving blade 13, fixed shaft head 14, second rotating shaft hole 16, wherein the first fixed sleeve 4 is installed in the required On the fixing device of the invention equipment; As shown in Figure 2, the first fixed ring 3 end faces are installed on the first fixed sleeve 4 end faces; As shown in Figures 1 and 2, the second fixed sleeve 9 inner circles are installed on the first fixed ring On the outer surface of the ring 3; on the inner surface of the drive cylinder 8, there are internal teeth; as shown in Figure 6, one end of the fixed shaft head 14 is installed on the end surface of the drive cylinder 8; the drive cylinder 8 is installed away from the end of the fixed shaft head 14 On the end face of the second fixed sleeve 9; as shown in Figure 5, six second driving blades 13 are evenly installed on the outer surface of the drive cylinder 8 in the circumferential direction; as shown in Figures 1 and 2, the output shaft 5 is installed on the A fixed sleeve 4, and one end of the output shaft 5 is installed in the second rotating shaft hole 16 opened on the drive cylinder 8 and the fixed shaft head 14; as shown in Figure 5, the torque adjustment mechanism 7 is installed in the drive cylinder 8, and The torque adjustment mechanism 7 cooperates with the internal teeth on the drive cylinder 8 and the output shaft 5; as shown in Figure 3, the input shell 2 has a receiving chamber 45; as shown in Figure 3, the receiving chamber 45 has a through hole on the end surface 11. As shown in Figure 2, one end of the input shaft 1 is installed on the end face of the input shell 2; as shown in Figure 3, there is a first shaft hole 10 on the input shell 2 and the input shaft 1; as shown in Figure 2, the input The shell 2 is mounted on the fixed shaft head 14 through the first rotating shaft hole 10 opened on it and the outer circular surface of the fixed shaft head 14, and the end face of the drive cylinder 8 is matched with the end face of the receiving cavity 45 on the input shell 2; the through hole 11 The inner circular surface cooperates with the outer circular surface of the second fixed sleeve 9; as shown in FIG. Six second driving blades 13 are distributed in a staggered manner; as shown in FIG. 2 , many driving steel balls 6 are installed in the accommodating cavity 45 .

As shown in Figures 7 and 9, the above-mentioned torque adjustment mechanism 7 includes a guide rail mechanism 15, a drive gear 17, a first fixed column 18, a second fixed column 19, a drive gear fixed shaft 27, a first one-way gear 28, a second one-way gear To the gear 29, the third one-way gear 30, the first fixed shaft 32, the output gear 46, the second fixed stepped shaft 36, the third fixed shaft 37, the fourth gear 38, the fifth gear 39, the sixth gear 40, as As shown in Figures 1 and 2, the two ends of the guide rail mechanism 15 are respectively connected by the first fixed column 18; the two guide rail mechanisms 15 are all located in the drive cylinder 8; as shown in Figure 7, the guide rail mechanism 15 passes through two The second fixed column 19 is installed on the end face of the first fixed ring 3; as shown in Figure 12, the drive gear 17 is installed between the two rail mechanisms 15 through the drive gear fixed shaft 27; as shown in Figure 13, the output gear 46 is installed On the output shaft 5, and the output gear 46 is located in the drive cylinder 8; as shown in Figures 2 and 13, one end of the first fixed shaft 32 is installed in the hole opened on the first fixed ring 3; the first one-way gear 28 One end is installed on the first fixed shaft 32, and the first one-way gear 28 cooperates with the drive gear 17; As shown in Figures 2 and 13, the fourth gear 38 is installed on the first fixed shaft 32, and the fourth gear 38 and Output gear 46 meshes; As shown in Figure 2, 13, the second fixed stepped shaft 36 one ends are installed in the hole that opened on the first fixed ring 3; As shown in Figure 14, the second one-way gear 29 one ends are installed in the first Two fixed stepped shafts 36 end faces, and the second one-way gear 29 cooperates with the drive gear 17; as shown in Figure 18, the fifth gear 39 is installed on the second fixed stepped shaft 36 end faces, and the fifth gear 39 and the output gear 46 engagement; one end of the third fixed shaft 37 is installed in the hole opened on the first fixed ring 3; as shown in Figure 2 and 13, one end of the third one-way gear 30 is installed on the end face of the third fixed shaft 37, and the first Three one-way gears 30 cooperate with the drive gear 17; the sixth gear 40 is installed on the end face of the third fixed shaft 37, and the sixth gear 40 meshes with the output gear 46; as shown in Figure 19, the first one-way gear 28, the second Two one-way gears 29, the third one-way gear 30 are distributed successively along the drive gear 17 axial directions; As shown in FIG. 19 , the fourth gear 38 , the fifth gear 39 and the sixth gear 40 are distributed along the axis of the output gear 46 in sequence.

As shown in Figure 9, the above-mentioned rail mechanism 15 includes a square groove 20, a return spring 47, a guide groove 21, a T-shaped arc groove 22, an arc-shaped guide rail 23, a return spring 24, a snap-in 25, a T-shaped arc block 26, and a guide rail. Block 31, draw-in groove 41, first bevel 42, second bevel 43, as shown in Figure 8,10,11, wherein arc guide rail 23 end faces have T-shaped arc groove 22; There are three groups of square grooves 20 in turn at 20 degrees; two square grooves 20 in each group are located on the inner walls of both sides of the T-shaped arc groove 22, and the square grooves 20 are not penetrated; the structure on each square groove 20 and its The installation structure is exactly the same, for one of them, as shown in Figure 10, there are two non-through guide grooves 21 symmetrically opened on both sides of the square groove 20; as shown in Figure 17, there are two symmetrically opened on both sides of the block one end The second slope 43; as shown in Figure 17, two guide blocks 31 are symmetrically installed on both sides of the block; as shown in Figure 10, the block is installed in the square groove 20 through the cooperation of the guide groove 21 and the guide block 31; As shown in Figure 9, the return spring 24 is located in the square groove 20, one end of the return spring 24 is installed on the end face of the block, and the other end is installed on the end face of the square groove 20; as shown in Figures 15 and 16, the T-shaped arc block 26 both side walls are provided with slots 41, the slots 41 have a first slope 42, and the first slope 42 cooperates with the second slope 43; the T-shaped arc block 26 is installed in the T-shaped arc groove 22; as shown As shown in 22, the recovery spring 47 is located in the T-shaped arc groove 22, and one end of the recovery spring 47 is installed on the T-shaped ring groove inner wall, and the other end is installed on the T-shaped arc block 26.

The above-mentioned two first fixed columns 18 are installed between the two arc-shaped guide rails 23; one end of the two second fixed columns 19 is installed on the arc-shaped guide rail 23, and the other end is installed on the end face of the first fixed ring 3; the driving gear is fixed The two ends of the shaft 27 are respectively installed on the end faces of two T-shaped arc blocks 26; before the device is in use, the driving gear 17 meshes with the third one-way gear 30; the diameter of the driving gear 17 is D1; the first one-way gear 28 The diameter of the second one-way gear 29 is D3; the diameter of the third one-way gear 30 is D4; the diameter of the fourth gear 38 is D5; the diameter of the fifth gear 39 is D6; the diameter of the sixth gear 40 The diameter is D7; the diameter of the output gear 46 is D8; the ratio of D1 to D2 is 4/3; the ratio of D1 to D3 is 20/17; the ratio of D1 to D4 is 1/1; the ratio of D5 to D8 is 1/ 2; The ratio of D6 to D8 is 1/2; the ratio of D7 to D8 is 2/5.

The inclination angles of the first slope 42 and the second slope 43 are the same.

The above-mentioned fourth gear 38 is installed on the first fixed shaft 32 by a key, the fifth gear 39 is installed on the second fixed shaft by a key, and the sixth gear 40 is installed on the third fixed shaft 37 by a key.

Solid lubricating oil is coated between the above-mentioned T-shaped arc block 26 and the T-shaped arc groove 22 .

The above-mentioned output gear 46 is mounted on the output shaft 5 through a key.

The above-mentioned return spring 24 is a compression spring.

Above-mentioned drive gear 17 is installed on the drive gear fixed shaft 27 by bearing.

In summary:

The effect that the first fixed sleeve 4 of the present invention is installed on the fixing device that needs the equipment of the present invention is to facilitate fixing the first fixed ring 3 and the output shaft 5; the effect that the end face of the first fixed ring 3 is installed on the end face of the first fixed sleeve 4 is It is convenient to fix the second fixed sleeve 9; the inner surface of the second fixed sleeve 9 is installed on the outer surface of the first fixed ring 3 to facilitate fixing the drive cylinder 8 and the input shell 2; the inner surface of the drive cylinder 8 is provided with an inner The function of the teeth is to facilitate the transmission of the motion on the drive cylinder 8 to the drive gear 17; one end of the fixed shaft head 14 is installed on the end face of the drive cylinder 8 for the purpose of fixing the drive cylinder 8; the drive cylinder 8 is far away from the installation and fixed One end of the shaft head 14 is installed on the end surface of the second fixed sleeve 9 to transmit the motion of the driving steel ball 6 to the driving gear 17; the six second driving blades 13 are evenly installed on the outer surface of the driving cylinder 8 in the circumferential direction The function is to facilitate the driving of the steel ball 6 to drive the drive cylinder 8 to move; the output shaft 5 is installed in the first fixed sleeve 4, and one end of the output shaft 5 is installed in the second shaft hole 16 opened on the drive cylinder 8 and the fixed shaft head 14 The function of driving the load at the output end is to move; the torque adjustment mechanism 7 is installed in the drive cylinder 8, and the function of the torque adjustment mechanism 7 to cooperate with the internal teeth on the drive cylinder 8 and the output shaft 5 is to adjust the torque value of the output end, thereby The torque value at the output end remains unchanged; the input housing 2 has a housing cavity 45 to accommodate the drive cylinder 8; the housing cavity 45 has a through hole 11 on the end surface to facilitate the passage of the second fixed sleeve 9, so as to facilitate fixing The purpose of the drive cylinder 8; one end of the input shaft 1 is installed on the end surface of the input shell 2 to transmit the motion of the input end to the input shell 2; the first shaft hole 10 is opened on the input shell 2 and the input shaft 1 to fix the The input shell 2 and the input shaft 1; the input shell 2 is installed on the fixed shaft head 14 through the first rotating shaft hole 10 opened on it and the outer circular surface of the fixed shaft head 14, and the end surface of the drive cylinder 8 is connected to the input shell 2. The function of the end face of the accommodation cavity 45 is to form a closed cavity, so that the driving steel ball 6 will not flow out of the accommodation cavity 45 during the movement; the inner surface of the through hole 11 cooperates with the outer surface of the second fixed sleeve 9 It is for the purpose of auxiliary support for the input shell 2; the six first driving blades 12 are uniformly installed on the inner surface of the housing cavity 45 in the circumferential direction, and the six first driving blades 12 and the six second driving blades 13 are staggered The function of the distribution is to drive the driving steel ball 6 to move, and the first driving blade 12 and the second driving blade 13 will not interfere at the same time;

The function of the torque adjustment mechanism 7 in the present invention is to adjust the output torque value on the output shaft 5, so that the torque value on the output shaft 5 remains unchanged, thereby achieving the purpose of overload protection for the equipment; two guide rail mechanisms 15 at both ends The role of connecting through the first fixed column 18 is to connect the two guide rail mechanisms 15; the role of the two guide rail mechanisms 15 located in the drive cylinder 8 is to guide the movement of the drive gear 17; the guide rail mechanism 15 passes through the two second fixed columns. 19 is installed on the end face of the first fixed ring 3 to guide the movement of the drive gear 17 and to support the drive gear 17; the drive gear 17 is installed between the two guide rail mechanisms 15 through the drive gear fixed shaft 27 The function is to transmit the motion on the drive cylinder 8 to the first one-way gear 28 or the second one-way gear 29 or the third one-way gear 30; the output gear 46 is installed on the output shaft 5, and the output gear 46 is located in the drive cylinder The function in 8 is to transmit the motion of one of the gears in the fourth gear 38, the fifth gear 39 and the sixth gear 40 to the output gear 46; one end of the first fixed shaft 32 is installed on the first fixed ring 3 to open The effect in the hole is to facilitate fixing the first one-way gear 28 and the fourth gear 38; one end of the first one-way gear 28 is installed on the first fixed shaft 32, and the first one-way gear 28 cooperates with the driving gear 17 It is to transmit the motion on the driving gear 17 to the first fixed shaft 32; the fourth gear 38 is installed on the first fixed shaft 32, and the function of the fourth gear 38 meshing with the output gear 46 is to move the first fixed shaft 32 The motion is transmitted to the output gear 46; one end of the second fixed stepped shaft 36 is installed in the hole opened on the first fixed ring 3 to facilitate fixing the second one-way gear 29 and the fifth gear 39; the second one-way gear One end of the gear 29 is installed on the end face of the second fixed stepped shaft 36, and the second one-way gear 29 cooperates with the driving gear 17 to transmit the motion on the driving gear 17 to the second fixed shaft; the fifth gear 39 is installed on the second fixed shaft. On the end faces of the two fixed stepped shafts 36, the fifth gear 39 meshes with the output gear 46 to transmit the motion on the second fixed shaft to the output gear 46; one end of the third fixed shaft 37 is installed on the first fixed ring 3 The effect in the opened hole is to facilitate fixing the 3rd one-way gear 30 and the 6th gear 40; The function of cooperation is to transmit the motion on the driving gear 17 to the third fixed shaft 37; the sixth gear 40 is installed on the end face of the third fixed shaft 37, and the function of the sixth gear 40 meshing with the output gear 46 is to transfer the third The motion on the fixed shaft 37 is transmitted to the output gear 46; the first one-way gear 28, the second one-way gear 29, and the third one-way gear 30 are distributed sequentially along the axis direction of the driving gear 17 to prevent the first one-way gear from 28. Interference occurs during the movement of the second one-way gear 29 and the third one-way gear 30 respectively; The same effect in the direction is to make the output gear 46 not drive the first one-way gear 28, the second one-way gear 29, and the third one-way gear 30; the fourth gear 38, the fifth gear 39, and the sixth gear 40 are output along the The function of gears 46 axially distributed sequentially is to prevent the phenomenon that the fourth gear 38, the fifth gear 39 and the sixth gear 40 will not interfere during the respective movements; the function of the guide rail mechanism 15 is to guide the movement of the drive gear 17; the arc guide rail There are T-shaped arc grooves 22 on the end face of 23 to facilitate the movement of T-shaped arc blocks 26; on the inner wall of T-shaped arc grooves 22, there are 3 groups of square grooves 20 arranged at 20 degrees in order to facilitate the movement of the blocks installed therein. Cooperate, the torque limiter in this device has 3 speed gears; two square slots 20 in each group are located on the inner walls of both sides of the T-shaped arc slot 22, and the square slots 20 are not connected to facilitate the accommodation of the card. block; two sides of the square groove 20 are symmetrically opened with two non-through guide grooves 21, which are used to cooperate with the guide block 31 installed on the block to achieve the purpose of guiding the movement of the block; the two sides of one end of the block are symmetrically opened The function of two second inclined surfaces 43 is to cooperate with the first inclined surface 42 on the T-shaped arc block 26 to achieve the purpose of restricting the movement of the T-shaped arc block 26; The effect in the slot 20 is to limit the movement of the T-shaped arc block 26; the return spring 24 is located in the square slot 20, and one end of the return spring 24 is installed on the end face of the block, and the other end is installed on the end face of the square slot 20. The T-shaped arc block 26 acts as a restoring force; the T-shaped arc block 26 is installed in the T-shaped arc groove 22 to facilitate the installation of the drive gear fixed shaft 27, thereby achieving the purpose of guiding the drive gear 17 to move; the recovery spring 47 is located in the T-shaped In the arc groove 22, one end of the recovery spring 47 is installed on the inner wall of the T-shaped ring groove, and the other end is installed on the T-shaped arc block 26 to give a restoring force to the T-shaped arc block 26; when the device is in use, drive The gear 17 meshes with the third one-way gear 30 so that the initial speed is small; the same effect of the inclination angles of the first inclined surface 42 and the second inclined surface 43 is to facilitate the block and the T-shaped arc block 26 to play a limiting role; the T-shaped arc The effect of being coated with solid lubricating oil between the block 26 and the T-shaped arc groove 22 is to facilitate the better movement of the T-shaped arc block 26 in the T-shaped arc groove 22 .

The specific implementation method is, as shown in Figure 20a, when there is no need to increase the rotation speed of the output shaft 5, the input end of the movement will drive the input shell 2 to move, and the input shell 2 will drive the first drive blade 12 to move, the first The driving blade 12 will drive the driving steel ball 6 to move, the driving steel ball 6 will drive the second driving blade 13 to move, the second driving blade 13 will drive the driving cylinder 8 to move, the driving cylinder 8 will drive the driving gear 17 to move, and the driving gear 17 will drive the third one-way gear 30 to move, the third one-way gear 30 will drive the third fixed shaft 37 to move, the third fixed shaft 37 will drive the sixth gear 40 to move and the sixth gear 40 will drive the output gear 46 movement, the output gear 46 will drive the output shaft 5 to move, and the output shaft 5 will drive the load at the output end to move; when the output gear 46 moves, it will not drive the first one-way gear 28 and the second one-way gear 29 to move , so as to achieve the purpose of saving energy; as shown in Figure 20b, when the output end needs a higher rotational speed, when the rotational speed of the input end increases to N1 at this time, the drive gear 17 at this time will be in the drive cylinder 8 Under the action of the acceleration force, it will move along the drive gear track 44 on the arc guide rail 23; thus the drive gear 17 will mesh with the second one-way gear 29, and the drive gear 17 at this time will drive the second one-way gear. To the gear 29, the second one-way gear 29 will drive the second fixed shaft to move, the second fixed shaft will drive the fifth gear 39 to move, the fifth gear 39 will drive the output gear 46 to move, and the output gear 46 will Drive the output shaft 5 to move; as shown in Figure 21, when the speed of the input end increases again, the driving gear 17 at this time will mesh with the first one-way gear 28, passing through the first one-way gear 28, the first fixed shaft in turn 32, the fourth gear 38, the output gear 46, so as to achieve the purpose of driving the output shaft 5 to move; the diameter of the driving gear 17 is D1; the diameter of the first one-way gear 28 is D2; the diameter of the second one-way gear 29 is D3 The diameter of the third one-way gear 30 is D4; the diameter of the fourth gear 38 is D5; the diameter of the fifth gear 39 is D6; the diameter of the sixth gear 40 is D7; the diameter of the output gear 46 is D8; The ratio of D1 to D3 is 20/17; the ratio of D1 to D4 is 1/1; the ratio of D5 to D8 is 1/2; the ratio of D6 to D8 is 1/2; D7 to D8 The effect of the ratio of 2/5 is that when the rotation speed of the driving gear 17 is N2, when the driving gear 17 meshes with the third one-way gear 30, the rotation speed on the output shaft 5 will be 0.4* N2, when the rotation speed of the drive gear 17 is N2, when the drive gear 17 meshes with the second one-way gear 29 at this time, the rotation speed on the output shaft 5 will be 0.58*N2, when the rotation of the drive gear 17 When the speed is N2, when the drive gear 17 meshes with the first one-way gear 28, the rotation speed on the output shaft 5 will be 0.7*N2, so the rotation of the output end at this time The speed result is 0.4*N2<0.58*N2<0.7*N2, but when the driving gear 17 meshes with the third one-way gear 30, the second one-way gear 29, and the third one-way gear 30 in turn, the speed of the driving gear 17 Increase in turn, when the speed on the driving gear 17 becomes larger again when passing through the fourth gear 38 or the fifth gear 39, the torque value will be reduced, but the rotational speed of the input shaft 1 has increased, and now the driving steel ball 6 drives The torque value of the first driving blade 12 and the second driving blade 13 becomes larger; the torque value on the output shaft 5 at this moment does not increase, when the load on the output shaft 5 suddenly becomes larger, increase the rotational speed on the input shaft 1, At this time, the torque value on the output shaft 5 does not change, so that relative rotation occurs, and the purpose of protecting the output end equipment is achieved.

Claims (7)

1. a kind of output torque is constant and the increased torque limiter of velocity of rotation, it is characterised in that：It is characterized in that：It includes Input shaft, input shell, the first retainer ring, the first fixed cover, output shaft, driving steel ball, torque adjustment mechanism, driving cylinder, second Fixed cover, first rotating shaft hole, accommodating chamber, through hole, the first driving blade, the second driving blade, fixed spindle nose, the second shaft hole, Wherein the first fixed cover, which is arranged on, to be needed in the fixing device of present device；First retainer ring end face is arranged on the first fixed cover On end face；Second fixed cover inner headed face is arranged on the first retainer ring periphery；Internal tooth is provided with driving cylinder inner headed face；Fixing axle First end is arranged on driving cylinder end face；The one end of cylinder away from the fixed spindle nose of installation is driven to be arranged on the second fixed cover end face；6 Individual second driving blade is circumferentially uniform to be arranged on driving cylinder periphery；Output shaft is arranged in the first fixed cover, and is exported Axle one end is arranged on driving cylinder with fixing on spindle nose in the second shaft hole opened；Torque adjustment mechanism is arranged in driving cylinder, And torque adjustment mechanism coordinates with the internal tooth and output shaft opened on driving cylinder；There is accommodating chamber on input shell；Accommodate resonator end surface On be provided with through hole；Input shaft one end is arranged on input shell end face；Input shell on input shaft with being just provided with first rotating shaft hole；Input Shell is coordinated by the first rotating shaft hole opened thereon and the periphery of fixed spindle nose to be arranged on fixed spindle nose, and drives cylinder end face Coordinate with accommodating resonator end surface on input shell；Through hole inner headed face and the second fixed cover periphery coordinate；6 the first driving blades are circumferential Uniformly it is arranged on accommodating chamber inner headed face, and 6 the first driving blades are interspersed with 6 the second driving blades；Accommodating chamber Many driving steel balls are inside installed；

Above-mentioned torque adjustment mechanism, which includes guide rail mechanism, drive gear, the first fixed column, the second fixed column, drive gear, to be fixed Axle, the first ratchet, the second ratchet, the 3rd ratchet, the first fixing axle, output gear, the second fixed step axle, 3rd fixing axle, the 4th gear, the 5th gear, the 6th gear, it is solid by first respectively between two of which guide rail mechanism both ends Fixed column connects；Two guide rail mechanisms are respectively positioned in driving cylinder；Guide rail mechanism is arranged on first by two the second fixed columns and fixed On ring end face；Drive gear is arranged between two guide rail mechanisms by drive gear fixing axle；Output gear is arranged on output On axle, and output gear is in driving cylinder；First fixing axle one end is arranged in the hole opened in the first retainer ring；First is single It is arranged on to gear one end in the first fixing axle, and the first ratchet coordinates with drive gear；4th gear is arranged on first In fixing axle, and the 4th gear engages with output gear；Second fixed step axle one end is arranged on what is opened in the first retainer ring In hole；Second ratchet one end is arranged in the second fixed step axial end, and the second ratchet coordinates with drive gear； 5th gear is arranged in the second fixed step axial end, and the 5th gear engages with output gear；Pacify 3rd fixing axle one end In the hole opened in the first retainer ring；3rd ratchet one end is arranged on the 3rd and fixed in axial end, and the 3rd is unidirectional Gear coordinates with drive gear；6th gear is arranged on the 3rd and fixed in axial end, and the 6th gear engages with output gear；The One ratchet, the second ratchet, the 3rd ratchet are sequentially distributed along drive gear axis direction；First ratchet, Second ratchet, the 3rd ratchet unidirectional drive direction it is identical；4th gear, the 5th gear, the 6th gear are along defeated Go out Gear axis direction to be sequentially distributed；

Above-mentioned guide rail mechanism includes square groove, recovers that spring, guide groove, T-shaped arc groove, arc-shaped guide rail, return spring, card be fast, T-shaped arc Block, guide block, neck, the first inclined-plane, the second inclined-plane, T-shaped arc groove is wherein provided with arc-shaped guide rail end face；It is on T-shaped arc groove inwall 20 degree are provided with 3 prescription grooves successively；Two square grooves that come in every group are located on the inwall of T-shaped arc groove both sides, and square groove is non-through；Often Structure and its mounting structure on individual square groove is identical, and being symmetrically provided with two for one of them, on square groove two sides does not pass through Logical guide groove；Two the second inclined-planes are symmetrically provided with the two sides of fixture block one end；Two guide blocks are symmetrically mounted on fixture block two sides； Fixture block is arranged in square groove by the cooperation of guide groove and guide block；Return spring is located in square groove, and return spring one end is arranged on card On block end face, the other end is arranged on square groove end face；Neck is provided with T-shaped arc block two side, there is the first inclined-plane on neck, And first inclined-plane and the second inclined-plane coordinate；T-shaped arc block is arranged in T-shaped arc groove；Recover spring to be located in T-shaped arc groove, recover bullet Spring one end is arranged on T-shaped annular groove inwall, and the other end is arranged on T-shaped arc block；

The fixed column of above-mentioned two first is arranged between two arc-shaped guide rails；Two second fixed column one end are arranged on arc-shaped guide rail On, the other end is arranged on the first retainer ring end face；Drive gear fixed both ends of the shaft is separately mounted to two T-shaped arc block end faces On；When this equipment is before use, drive gear engages with the 3rd ratchet；The diameter of drive gear is D₁；First unidirectional tooth The diameter of wheel is D₂；The diameter of second ratchet is D₃；The diameter of 3rd ratchet is D₄；The diameter of 4th gear is D₅； The diameter of 5th gear is D₆；The diameter of 6th gear is D₇；The diameter of output gear is D₈；D₁Compare D₂Ratio be 4/3；D₁Than D₃Ratio be 20/17；D₁Compare D₄Ratio be 1/1；D₅Compare D₈Ratio be 1/2；D₆Compare D₈Ratio be 1/2；D₇Compare D₈Ratio It is worth for 2/5.

2. a kind of output torque according to claim 2 is constant and the increased torque limiter of velocity of rotation, its feature exist In：Above-mentioned first inclined-plane is identical with the angle of inclination on the second inclined-plane.

3. a kind of output torque according to claim 3 is constant and the increased torque limiter of velocity of rotation, its feature exist In：Above-mentioned 4th gear is arranged in the first fixing axle by key, and the 5th gear is installed in the second fixing axle by key, the Six gears are arranged in the 3rd fixing axle by key.

4. a kind of output torque according to claim 1 is constant and the increased torque limiter of velocity of rotation, its feature exist In：Solid lubrication oil is scribbled between above-mentioned T-shaped arc block and T-shaped arc groove.

5. a kind of output torque according to claim 1 is constant and the increased torque limiter of velocity of rotation, its feature exist In：Above-mentioned output gear is arranged on output shaft by key.

6. a kind of output torque according to claim 1 is constant and the increased torque limiter of velocity of rotation, its feature exist In：Above-mentioned return spring is compression spring.

7. a kind of output torque according to claim 1 is constant and the increased torque limiter of velocity of rotation, its feature exist In：Above-mentioned drive gear is arranged in drive gear fixing axle by bearing.