CN218207658U - Synchronous belt tensioning device and gantry crane with same - Google Patents

Abstract

The utility model relates to an elevator technical field especially relates to a hold-in range rises and tightly installs and has hold-in range door machine that rises and tightly installs. A synchronous belt tensioning device is used for tensioning a synchronous belt and comprises a belt clamp; the belt clamp comprises a fixing block and a moving block, the fixing block is provided with a fixing clamping portion used for clamping a synchronous belt, the moving block is provided with a moving clamping portion used for clamping the synchronous belt, the synchronous belt tensioning device further comprises a wedge mechanism and a driving piece, the driving piece can act on the moving block or the wedge mechanism, so that the limiting movement fit capable of sliding relatively along the movement direction of the synchronous belt is formed between the fixing block and the moving block through the wedge mechanism, and the synchronous belt is tensioned or loosened. The utility model discloses a hold-in range rises and tightly installs, when the installation, can fix the synchronous pulley at hold-in range both ends earlier, and rethread removes the movable block taut with the hold-in range to the tight hold-in range that rises can be applicable to the occasion that needs fix the synchronous pulley at both ends.

Description

Synchronous belt tensioning device and gantry crane with same

Technical Field

The utility model relates to an elevator technical field especially relates to a hold-in range rises and tightly installs and has hold-in range door machine that rises and tightly installs.

Background

The synchronous belt tensioning device is connected to the synchronous belt and used for tensioning the synchronous belt. When the hold-in range is applied to the elevator field, the hold-in range is the important component part of elevator door machine, and the hold-in range is as transmission device for drive power to the motor that will open the door transmits to the car door like the elevator through the hold-in range, realizes opening and close of car door. Both ends of the synchronous belt are provided with synchronous belt wheels, and after the installation is finished, the synchronous belt needs to be tensioned to ensure that the synchronous belt works normally.

The mode that current hold-in range rises is, the synchronous pulley of one end is fixed to be set up, and the synchronous pulley of one end is mobile in addition, and after the synchronous belt meshes with the synchronous pulley at both ends, thereby rise the tight synchronous belt through removing mobilizable synchronous pulley, and some occasions need fix the synchronous pulley at both ends earlier, consequently, current one end sets up mobilizable synchronous pulley and just can't use the occasion that needs fixed both ends synchronous pulley earlier.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for a timing belt tensioning device that can be applied to a situation where the timing pulleys at both ends are fixed or can tension a timing belt while connecting/clamping the timing belt.

A synchronous belt tensioning device is used for tensioning a synchronous belt and comprises a belt clamp; the belt clamp comprises a fixed block and a moving block, the fixed block is provided with a fixed clamping part used for clamping the synchronous belt, the moving block is provided with a moving clamping part used for clamping the synchronous belt, the synchronous belt tensioning device further comprises a wedge mechanism and a driving piece, and the driving piece can act on the moving block or the wedge mechanism so as to enable the fixed block and the moving block to form limiting motion matching capable of sliding relatively along the motion direction of the synchronous belt through the wedge mechanism to tension or loosen the synchronous belt. The scheme that the driving part acts on the moving block or the wedge mechanism comprises that the driving part directly acts on the moving block and indirectly acts on the moving block, and therefore the power effect of the driving part is transmitted to the moving block by the wedge mechanism driving the moving block. The wedge mechanism can be composed of an independent wedge block and an independent sliding block, and then the wedge mechanism is connected with the moving block through a linkage component; the wedge block, the sliding block and the linkage component of the wedge mechanism can be fused with the fixed block or the moving block, so that the driving action surface and the driven action surface of the wedge mechanism are directly formed on the fixed block or the moving block to realize the relative movement between the fixed block and the moving block, and the effects of reducing the number of parts and simplifying the structure can be achieved.

The synchronous belt tensioning device of the utility model can fix the synchronous belt pulleys at the two ends of the synchronous belt firstly when being installed, and then tension the synchronous belt by moving the moving block, thereby tensioning the synchronous belt, and being applicable to occasions needing to fix the synchronous belt pulleys at the two ends; moreover, the belt clamp can be connected with other driven parts such as a door knife and the like, so that the synchronous belt tensioning device can also play a role in tensioning the synchronous belt while being connected with the synchronous belt. The utility model discloses a hold-in range rises and tightly installs and can use in the elevator door machine for the hold-in range of the drive elevator car door motion that rises also can be applied to the luggage detection machine of subway, perhaps is applied to any occasion that has the hold-in range.

In one embodiment, one end of the fixed block, which is far away from the fixed clamping portion, is provided with a sliding groove, and one end of the moving block, which is far away from the moving clamping portion, is arranged in the sliding groove and can slide and lock in the sliding groove, so that the moving clamping portion moves towards a direction close to or far away from the fixed clamping portion.

It will be appreciated that the chute acts as a guide. The movable block can be locked by structures such as dowel pins after sliding in place in the spout, or can be through setting up protruding muscle/fixture block/elastic component isotructure in order to play the effect of locking the movable block at the spout inner wall, or can directly lock etc. by the driving piece, the driving piece can be power unit like the cylinder, including a motor, an end cap, a controller, and a cover plate, the driving piece also can be by other connecting pieces of power unit cooperation on acting on the movable block with power, the driving piece can also be components such as lead screw still have the locking effect when transmitting power for the movable block.

In one embodiment, the wedge mechanism includes an inclined plane and a thrust surface matched with the inclined plane, the thrust surface is linked with the moving block, the inclined plane is disposed on the moving block or the fixed block, and the driving member drives the thrust surface to slide along the inclined plane so that the moving block moves towards a direction close to or far away from the fixed clamping portion.

In one embodiment, the wedge mechanism comprises a sliding block, the thrust surface is arranged on the sliding block, the sliding block is in linkage connection with the moving block, the inclined surface is arranged on the fixed block, and the driving piece is connected to the sliding block and can drive the sliding block to move, so that the thrust surface and the inclined surface are matched to push the moving block to move;

or the inclined plane is arranged on the moving block, and the driving piece is connected to the sliding block and can drive the sliding block to move, so that the sliding block pushes the moving block to move through the matching of the thrust surface and the inclined plane.

In one embodiment, the moving block is provided with an installation groove, the sliding block is arranged in the installation groove, and the inclined surface is arranged in the installation groove and matched with the thrust surface; the driving piece is the threaded rod, the driving piece wears to locate the fixed block and follows the axial of threaded rod runs through the mounting groove, the threaded rod with slider threaded connection is in order to order about the slider is followed the axial of threaded rod slides, the driving piece has the drive head that supplies the operation of external instrument, the drive head is located outside the mounting groove.

It can be understood that, set up the slider in the mounting groove, can set up the length of mounting groove according to the required displacement distance of movable block to can adjust the degree of tight hold-in range that rises, the mounting groove also can play limiting displacement to the slider, and, drive the slider through the threaded rod and remove, and is with low costs, and simultaneously, driving piece and fixed block form normal running fit, and driving piece and movable block and fixed block form the cooperation of pegging graft, can prevent that the slider from breaking away from the mounting groove. The threaded rod can be a lead screw, can be a bolt and the like, particularly, the sliding block, the moving block and the sliding block can be connected through one bolt, after tensioning is finished, the sliding block and the moving block can be locked through the bolt, the structure can be simplified, and the size can be reduced. And the head of the bolt is positioned outside the mounting groove, so that the operation of an installer is facilitated. The external tool may be a human hand, a monkey wrench, or an allen wrench. The bolt can be an outer hexagon head bolt or an inner hexagon head bolt.

In one embodiment, the width W of the mounting groove is smaller than the maximum length L of the slider, so that the groove wall of the mounting groove can limit the circumferential movement of the slider.

So set up, can prevent that the slider from rotating for the thrust surface can cooperate with the inclined plane all the time.

In one embodiment, the ramp has a first end and a second end, the first end being disposed proximate the moving clamp portion relative to the second end along the length of the belt clip; the synchronous belt tensioning device further comprises a limiting rod, the fixing block is far away from the end face of the first end, a through hole is formed in the end face of the first end, and the limiting rod penetrates through the through hole and abuts against the end face of the first end far away from the sliding block in the mounting groove.

When the slider orientation was close to first end motion, for the process of the tight hold-in range that rises, butt gag lever post on the terminal surface of first end was kept away from to the slider can prevent that the bolt is not hard up because of long-term work to lead to the slider to remove, make the hold-in range be in the tight state that rises all the time. The limiting rod can be a bolt or a pin.

In one embodiment, the fixed block comprises a fixed body and a fixed pressing plate, the fixed body is connected to the fixed pressing plate and is matched with the fixed pressing plate to form a fixed clamping part, and the fixed pressing plate can rotate relative to the fixed body to press the synchronous belt;

and/or the moving block comprises a moving body and a moving pressing plate, the moving body is connected to the moving pressing plate and matched with the moving pressing plate to form a moving clamping part, and the moving pressing plate can rotate relative to the moving body to press the synchronous belt.

When the synchronous belt is installed, the synchronous belt penetrates between the fixed body and the fixed pressing plate and between the movable body and the movable pressing plate, and then the fixed pressing plate and the movable pressing plate are rotated, so that the synchronous belt can be tightly pressed.

In one embodiment, a fixed rotating portion is arranged at one end of the fixed pressing plate close to the sliding chute, a fixed matching portion is arranged on the fixed body, the synchronous belt tensioning device further comprises a fixed fastener, the fixed fastener penetrates through the fixed pressing plate and is locked to the fixed body, and the fixed pressing plate is matched with the fixed matching portion through the fixed rotating portion and rotates relative to the fixed body;

and/or one end of the movable pressing plate, which is close to the sliding groove, is provided with a movable rotating part, the movable body is provided with a movable matching part, the synchronous belt tensioning device further comprises a movable fastener, the movable fastener penetrates through the movable pressing plate and is locked on the movable body, and the movable pressing plate is matched with the movable matching part through the movable rotating part and rotates relative to the movable body.

It can be understood that the fixed rotating part can be an arc-shaped bulge, the fixed matching part is a groove with an arc-shaped inner wall, and the fixed rotating part rotates in the fixed matching part; or, the fixed rotating part is a groove with an arc-shaped inner wall, the fixed matching part is an arc-shaped bulge, and the fixed rotating part rotates along the arc-shaped surface of the fixed matching part. The arrangement modes of the movable rotating part and the fixed rotating part are consistent, and the arrangement modes of the movable matching part and the fixed matching part are consistent.

In one embodiment, the fixed pressing plate has a plurality of fixed limiting grooves formed on a side surface thereof facing the fixed body, the fixed pressing plate has a fixed accommodating groove formed on a side surface thereof facing the fixed pressing plate, the fixed body is covered on the fixed accommodating groove, the movable pressing plate has a plurality of movable limiting grooves formed on a side surface thereof facing the movable body, the movable body has a movable accommodating groove formed on a side surface thereof facing the movable pressing plate, the movable body is covered on the movable accommodating groove, the fixed accommodating groove and the movable accommodating groove are used for accommodating the synchronous belt, and the fixed limiting grooves and the movable limiting grooves are used for engaging the synchronous belt.

So set up, can make the belt clip tightly centre gripping hold-in range, prevent to skid.

In one embodiment, the moving block is provided with guide portions, and the guide portions are located on two sides of one end of the fixed block and used for guiding the movement of the moving block.

So set up for the movable block moves along fixed route, and the guide part can be the lug, also can be the slide rail.

The utility model discloses still provide following technical scheme:

the utility model provides a door machine with hold-in range rises and tightly installs, includes hold-in range and foretell hold-in range rise and tightly install, fixed clamping part reaches remove the clamping part centre gripping the hold-in range.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the conventional technologies, the drawings required to be used in the description of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a cross-sectional view of a synchronous belt tensioning device according to an embodiment of the present invention in a tensioned state;

FIG. 2 is a cross-sectional view of the synchronous belt tensioning device in a relaxed state;

FIG. 3 is a front view of the synchronous belt tensioning device in a tensioned state;

FIG. 4 is a front view of the synchronous belt tensioning device in a relaxed state;

FIG. 5 is an exploded view of the synchronous belt expansion device;

FIG. 6 is a perspective view of the synchronous belt expanding device;

fig. 7 is a partial sectional view of the timing belt expansion device in plan view.

Reference numerals: 100. a synchronous belt tensioning device; 10. a belt clip; 11. a moving block; 111. moving the clamping part; 112. moving the body; 1121. a movable fitting part; 113. moving the pressing plate; 1131. a movable rotating part; 1132. moving the limiting groove; 114. mounting grooves; 1141. a bevel; 1142. a first end; 1143. a second end; 115. a guide portion; 116. moving the accommodating groove; 12. a fixed block; 121. a chute; 122. a fixed clamping part; 123. a fixed body; 1231. a fixed fitting part; 124. fixing the pressing plate; 1241. a fixed rotating part; 1242. fixing a limit groove; 125. a through hole; 126. fixing the accommodating groove; 20. fixing a fastener; 30. moving the fastener; 40. a slider; 41. a thrust surface; 50. a drive member; 60. and a wedge mechanism.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The use of the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions in the description of the invention is for illustrative purposes only and does not represent a unique embodiment.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present disclosure, unless otherwise explicitly stated or limited, a first feature "on" or "under" a second feature may mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, the utility model provides a synchronous belt tensioning device 100 for tensioning a synchronous belt. The utility model discloses a hold-in range rises and tightly installs 100 can use in the elevator door machine for the hold-in range of the drive elevator car door motion that rises also can be applied to the luggage of subway detects the machine, perhaps is applied to any occasion that has the hold-in range.

The synchronous belt tensioning device 100 includes a belt clip 10, a cam mechanism 60, and a driving member 50, and the belt clip 10 is used to clamp a synchronous belt. The belt clip 10 includes a fixing block 12 and a moving block 11, the fixing block 12 has a fixing clamping portion 122 for clamping a synchronous belt, the moving block 11 has a moving clamping portion 111 for clamping the synchronous belt, and the driving member 50 can act on the moving block 11 to form a limit motion fit between the fixing block 12 and the moving block 11 through the wedge mechanism 60, so that relative sliding can occur in the moving direction of the synchronous belt, so as to tension or loosen the synchronous belt.

So set up, when the installation, can fix the synchronous pulley at hold-in range both ends earlier, rethread removes movable block 11 and strains the hold-in range to tight hold-in range rises, can be applicable to the occasion that needs fix the synchronous pulley at both ends. Moreover, the belt clip 10 serves to connect the driven member, and thus the timing belt tensioning device 100 according to the present invention can tension the timing belt while connecting the timing belt.

The sliding groove 121 is formed in one end, away from the fixed clamping portion 122, of the fixed block 12, and one end, away from the movable clamping portion 111, of the moving block 11 is arranged in the sliding groove 121 and can slide and be locked in the sliding groove 121, so that the movable clamping portion 111 moves towards a direction close to or away from the fixed clamping portion 122, and the synchronous belt is tensioned or loosened.

In one embodiment, two sides of the sliding groove 121 penetrate through two side surfaces of the fixed block 12, so that the processing is convenient, and the requirement for the processing precision of the moving block 11 extending into the sliding groove 121 can be reduced. In other embodiments, the sliding groove 121 is not open on the other sides than the notch facing the moving block 11.

The fixing block 12 includes a fixing body 123 and a fixing pressing plate 124, the fixing pressing plate 124 is connected to a side surface of one end of the fixing body 123 and is matched with the fixing body 123 to form a fixing clamping portion 122, and the sliding groove 121 is formed in an end of the fixing body 123 far away from the fixing clamping portion 122.

The end of the fixed pressing plate 124 far away from the sliding groove 121 can rotate relative to the fixed body 123 to compress the synchronous belt, when the synchronous belt is installed, the synchronous belt penetrates between the fixed body 123 and the fixed pressing plate 124, and then the fixed pressing plate 124 is rotated to tightly press the synchronous belt.

In an embodiment, a fixed rotating portion 1241 is disposed on an inner side of one end of the fixed pressing plate 124 close to the sliding slot 121, a fixed matching portion 1231 is disposed on a side surface of the fixed body 123 facing the fixed pressing plate 124, the fixed rotating portion 1241 and the fixed matching portion 1231 are matched to enable the fixed pressing plate 124 to rotate, the synchronous belt tensioning device 100 further includes a fixed fastener 20, the fixed fastener 20 penetrates through the fixed pressing plate 124 and is fixedly connected to the fixed body 123, and when the fixed fastener 20 locks the fixed pressing plate 124 to the fixed body 123, the fixed pressing plate 124 rotates along with the fixed matching portion 1231 through the fixed rotating portion 1241. The fixed rotating part 1241 may be an arc-shaped protrusion, the fixed fitting part 1231 is a groove with an arc-shaped inner wall, and the fixed rotating part 1241 rotates in the fixed fitting part 1231; or, the fixed rotating part 1241 is a groove with an arc-shaped inner wall, the fixed fitting part 1231 is an arc-shaped protrusion, and the fixed rotating part 1241 rotates along the arc-shaped surface of the fixed fitting part 1231.

Further, the fixing fastener 20 penetrates through the side face of one end, close to the sliding groove 121, of the fixing pressing plate 124, so that in the installation process, the fixing rotating portion 1241 can be pre-fixed to the fixing matching portion 1231, the fixing fastener 20 is locked step by step, and one end, far away from the sliding groove 121, of the fixing pressing plate 124 gradually rotates. It should be explained that the fixing fastener 20 is inserted through the side of the fixed pressing plate 124 near one end of the sliding slot 121, which means that the fixing fastener 20 is arranged on the middle rear side in the length direction of the fixed pressing plate 124, that is, on the left half section of the fixed pressing plate 124 in fig. 6. In other embodiments, one end of the fixed pressing plate 124 close to the sliding chute 121 can be directly connected with the fixed body 123 in a rotating manner.

The moving block 11 includes a moving body 112 and a moving pressing plate 113, and the moving pressing plate 113 is connected to a side surface of one end of the moving body 112 and forms a moving clamping portion 111 in cooperation with the moving body 112.

In an embodiment, a moving rotating portion 1131 is disposed on an inner side of one end of the moving platen 113 close to the sliding slot 121, a moving engaging portion 1121 is disposed on a side surface of the moving body 112 facing the moving platen 113, the moving rotating portion 1131 is engaged with the moving engaging portion 1121 to enable the moving platen 113 to rotate, the synchronous belt tensioning device 100 further includes a moving fastener 30, the moving fastener 30 penetrates through the moving platen 113 and is fixedly connected with the moving body 112, and when the moving fastener 30 locks the moving platen 113 to the moving body 112, the moving platen 113 rotates along with the moving engaging portion 1121 through the moving rotating portion 1131. The moving rotating part 1131 may be an arc-shaped protrusion, the moving matching part 1121 is a groove with an arc-shaped inner wall, and the moving rotating part 1131 rotates in the moving matching part 1121; or, the moving rotating part 1131 is a groove with an arc-shaped inner wall, the moving matching part 1121 is an arc-shaped protrusion, and the moving rotating part 1131 rotates along the arc-shaped surface of the moving matching part 1121.

Further, the movable fastening member 30 is inserted into the side surface of the end of the movable platen 113 close to the sliding slot 121, so that when installing, the movable rotating portion 1131 can be pre-fixed to the movable mating portion 1121, and then the movable fastening member 30 is locked step by step, so that the end of the movable platen 113 away from the sliding slot 121 gradually rotates. It should be explained that the insertion of the movable fastener 30 into the side of the movable platen 113 near the end of the chute 121 means that the movable fastener 30 is provided on the middle rear side in the length direction of the movable platen 113, that is, on the right half section of the movable platen 113 in fig. 6. In other embodiments, one end of the movable platen 113 near the chute 121 may be directly rotatably connected to the movable body 112.

Referring to fig. 5 and 7, a fixing receiving groove 126 is formed on a side surface of one end of the fixing body 123, the fixing pressing plate 124 is covered on the fixing receiving groove 126, a moving receiving groove 116 is formed on a side surface of one end of the moving body 112, the moving pressing plate 113 is covered on the moving receiving groove 116, and the fixing receiving groove 126 and the moving receiving groove 116 are used for receiving a synchronous belt.

The side that has fixed rotation portion 1241 on the fixed clamp plate 124 is equipped with a plurality of fixed spacing grooves 1242, and the side that has the removal rotation portion 1131 on the removal clamp plate 113 is equipped with a plurality of removal spacing grooves 1132, and fixed spacing groove 1242 and removal spacing groove 1132 are used for with the spacing protruding meshing on the hold-in range.

The wedge mechanism 60 includes an inclined surface 1141 and a thrust surface 41 engaged with the inclined surface 1141, the thrust surface 41 is linked with the moving block 11, the inclined surface 1141 is disposed on the moving block 11 or the fixed block 12, and the driving member 50 drives the thrust surface 41 to slide along the inclined surface 1141 so as to move the moving block 11 toward a direction close to or away from the fixed clamping portion 122.

In an embodiment, the wedge mechanism 60 includes a sliding block 40, a thrust surface 41 is disposed on the sliding block 40, the sliding block 40 is linked with the moving block 11, an inclined surface 1141 is disposed on the fixed block 12, and the driving member 50 is connected to the sliding block 40 and can drive the sliding block 40 to move along an axial direction of the driving member 50, so that the thrust surface 41 and the inclined surface 1141 cooperate to push the moving block 11 to move toward a direction close to or away from the fixed clamping portion 122.

In another embodiment, the synchronous belt tensioning device 100 includes a slider 40, a thrust surface 41 is disposed on the slider 40, an inclined surface 1141 is disposed on the moving block 11, and the driving component 50 is connected to the slider 40 and can drive the slider 40 to move along an axial direction of the driving component 50, so that the slider 40 cooperates with the inclined surface 1141 via the thrust surface 41 to push the moving block 11 to move towards a direction close to or away from the fixed clamping portion 122.

An installation groove 114 is formed at one end of the moving block 11 away from the moving clamping portion 111, and the inclined surface 1141 is disposed in the installation groove 114. Set up slider 40 in mounting groove 114, can set up the length of mounting groove 114 according to the required displacement distance of movable block 11 to can adjust the degree of tight hold-in range that rises, mounting groove 114 also can play limiting displacement to slider 40.

In an embodiment, the driving member 50 is a threaded rod, the threaded rod penetrates through the fixed block 12 and the sliding block 40 and is in threaded connection with the sliding block 40, the threaded rod has a driving head portion, the driving head portion is located outside the sliding groove 121 so as to be operated by an installer through an external tool, and the driving member 50 converts the rotation motion into the axial motion of the sliding block 40, so that the thrust surface 41 can push the moving block 11. The threaded rod drives the sliding block 40 to move, the cost is low, meanwhile, the driving piece 50 and the fixing block 12 form rotating fit, the driving piece 50, the moving block 11 and the fixing block 12 form inserting fit, the sliding block 40 can be prevented from being separated from the mounting groove 114, the sliding block 40 and the moving block 11 can be locked in the fixing block 12 through one bolt, after tensioning is finished, the bolt can lock the sliding block 40 and the moving block 11, the structure can be simplified, and the size can be reduced. In the present embodiment, the bolt of the driving member 50 may be an outer hexagon head bolt or an inner hexagon head bolt. In other embodiments, the motor can be used for driving the nut.

In one embodiment, the drive head is positioned above the mounting block 12 for ease of handling by the installer. In other embodiments, the drive head may also be located below the fixed block 12.

The end face of the one end of the sliding chute 121 is penetrated through by one end of the driving member 50 and then is in threaded connection with the sliding block 40, the other end of the driving member extends towards the other end of the sliding chute 121 and penetrates through the sliding chute 121, that is, both ends of the driving member 50 are connected with the fixed block 12, so that after tensioning is finished, the sliding block 40 and the moving block 11 can be firmly locked on the fixed block 12 by the driving member 50.

The width W of the mounting groove 114 is smaller than the maximum length L of the slider 40 so that the inner wall of the mounting groove 114 can restrict the circumferential movement of the slider 40. With this arrangement, when the driving member 50 is rotated, the slider 40 is restricted by the inner wall of the through hole 125 and cannot rotate, so that the thrust surface 41 always faces the inclined surface 1141 and can be matched with the inclined surface 1141 to push the moving block 11. It should be noted that the width refers to the distance in a direction perpendicular to the driving member 50 and perpendicular to the length of the belt clip 10, and the length refers to the distance from left to right in fig. 1, or from right to left.

The inclined surface 1141 has a first end 1142 and a second end 1143, the first end 1142 is disposed close to the movable clamping portion 111 relative to the second end 1143 along the length direction of the belt clip 10, the synchronous belt tensioning device 100 further includes a limiting rod (not shown), a through hole 125 is disposed on a wall of the sliding groove 121 away from the first end 1142, and the limiting rod extends into the sliding groove 121 from the through hole 125 and abuts against an end surface of the sliding block 40 away from the first end 1142. When slider 40 moves towards being close to first end 1142, for the process of rising and tighten hold-in range, butt gag lever post on the terminal surface of slider 40 distal from first end 1142 can prevent that driving piece 50 is not hard up because of long-term work to lead to slider 40 to remove, make the hold-in range be in the tight state that rises all the time. The stop lever may be a bolt, which is in threaded connection with the through hole 125, a pin, etc., as long as it can abut against the slider 40.

In one embodiment, the first end 1142 is located at the upper side, the second end 1143 is located at the lower side, and the upward movement of the slider 40 is to tighten the timing belt and the downward movement is to loosen the timing belt. In other embodiments, the first end 1142 may be located below the sliding block 40, and the second end 1143 is located above the sliding block 40, so that the sliding block 40 moves upward to be loosened, and moves downward to be tightened, and the limiting rod abuts against the end surface of the sliding block 40 close to the first end 1142.

Referring to fig. 3 and 4, the moving block 11 is provided with guide portions 115, the guide portions 115 are located at two sides of one end of the fixed block 12, and the guide portions 115 are matched with the side surfaces of the fixed block 12 to guide the moving direction of the moving block 11.

In various embodiments, the guiding portion 115 is a plurality of protrusions respectively and uniformly disposed on the fixing block 12, and in other embodiments, the guiding portion 115 may also be a sliding rail.

The belt clamp 10 is a metal piece which has high strength and can firmly clamp the synchronous belt.

In one embodiment, the belt clip 10 is an aluminum alloy piece that is lighter and reduces the overall weight of the synchronous belt tensioner 100.

The utility model also provides a door machine with hold-in range rises and tightly installs, including hold-in range, two synchronous pulley and foretell hold-in range rise and tightly install 100, the both ends of hold-in range are located respectively to two synchronous pulley, and fixed clamping part 122 and remove the 111 centre gripping hold-in ranges of clamping part, thereby fixed clamping part 122 and removal clamping part 111 can move in opposite directions and rise and tightly hold-in range.

The utility model provides a hold-in range rises and tightly installs 100, earlier with synchronous pulley fixed mounting at the both ends of hold-in range, belt clip 10 centre gripping hold-in range, rotary driving piece 50 to control slider 40 upward movement, thrust surface 41 promotes inclined plane 1141, makes movable block 11 remove, removes the direction motion that clamping part 111 orientation is close to fixed clamping part 122, thereby taut hold-in range.

The features of the above-described embodiments may be combined arbitrarily, and for the sake of brevity, all possible combinations of the features in the above-described embodiments will not be described in detail, but should be construed as being within the scope of the present disclosure unless there is any conflict between such combinations of features.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims (12)

1. A synchronous belt tensioning device is used for tensioning a synchronous belt and comprises a belt clamp (10);

the synchronous belt tensioning device is characterized in that the belt clamp (10) comprises a fixed block (12) and a moving block (11), the fixed block (12) is provided with a fixed clamping portion (122) used for clamping the synchronous belt, the moving block (11) is provided with a moving clamping portion (111) used for clamping the synchronous belt, the synchronous belt tensioning device further comprises a wedge mechanism (60) and a driving piece (50), and the driving piece (50) can act on the moving block (11) or the wedge mechanism (60) so that a limiting movement fit capable of sliding relatively along the moving direction of the synchronous belt is formed between the fixed block (12) and the moving block (11) through the wedge mechanism (60) to tension or loosen the synchronous belt.

2. The synchronous belt tensioning device according to claim 1, wherein one end of the fixed block (12) away from the fixed clamping portion (122) is provided with a sliding groove (121), and one end of the moving block (11) away from the moving clamping portion (111) is arranged in the sliding groove (121) and can slide and be locked in the sliding groove (121), so that the moving clamping portion (111) moves towards a direction close to or away from the fixed clamping portion (122).

3. The synchronous belt tensioning device according to claim 1 or 2, wherein the wedge mechanism (60) comprises an inclined surface (1141) and a thrust surface (41) matched with the inclined surface (1141), the thrust surface (41) is linked with the moving block (11), the inclined surface (1141) is arranged on the moving block (11) or the fixed block (12), and the driving member (50) drives the thrust surface (41) to slide along the inclined surface (1141) so that the moving block (11) moves towards a direction close to or far away from the fixed clamping portion (122).

4. The synchronous belt tensioning device according to claim 3, wherein the wedge mechanism comprises a sliding block (40), the thrust surface (41) is arranged on the sliding block (40), the sliding block (40) is linked with the moving block (11), the inclined surface (1141) is arranged on the fixed block (12), and the driving member (50) is connected to the sliding block (40) and can drive the sliding block (40) to move, so that the thrust surface (41) and the inclined surface (1141) are matched to push the moving block (11) to move;

or the inclined surface (1141) is arranged on the moving block (11), and the driving part (50) is connected to the sliding block (40) and can drive the sliding block (40) to move, so that the sliding block (40) is matched with the inclined surface (1141) through the thrust surface (41) to push the moving block (11) to move.

5. The synchronous belt tensioning device according to claim 4, wherein a mounting groove (114) is formed in the moving block (11), the sliding block (40) is arranged in the mounting groove (114), and the inclined surface (1141) is arranged in the mounting groove (114) and is matched with the thrust surface (41);

the driving piece (50) is a threaded rod, the driving piece (50) penetrates through the fixed block (12) and penetrates through the mounting groove (114) along the axial direction of the threaded rod, the driving piece (50) is in threaded connection with the sliding block (40) to drive the sliding block (40) to axially slide along the threaded rod, the driving piece (50) is provided with a driving head for operating an external tool, and the driving head is positioned outside the mounting groove (114).

6. The synchronous belt tensioner as claimed in claim 5, wherein the width W of the mounting groove (114) is smaller than the maximum length L of the slider (40) so that the groove wall of the mounting groove (114) can limit the circumferential movement of the slider (40).

7. The synchronous belt tensioner of claim 5, wherein the ramp (1141) has a first end (1142) and a second end (1143); the first end (1142) is disposed proximate the moving clamp portion (111) relative to the second end (1143) in a direction along a length of the belt clip (10); the synchronous belt tensioning device further comprises a limiting rod, a through hole (125) is formed in the end face, away from the first end (1142), of the fixing block (12), the limiting rod penetrates into the mounting groove (114) from the through hole (125) and abuts against the end face, away from the first end (1142), of the sliding block (40).

8. The synchronous belt tensioning device according to claim 1, wherein the fixing block (12) comprises a fixing body (123) and a fixing pressure plate (124), the fixing body (123) is connected to the fixing pressure plate (124) and is matched with the fixing pressure plate (124) to form a fixing clamping portion (122), and the fixing pressure plate (124) can rotate relative to the fixing body (123) to compress the synchronous belt;

and/or the moving block (11) comprises a moving body (112) and a moving pressing plate (113), the moving body (112) is connected to the moving pressing plate (113) and matched with the moving pressing plate (113) to form a moving clamping part (111), and the moving pressing plate (113) can rotate relative to the moving body (112) to press the synchronous belt.

9. The synchronous belt tensioning device according to claim 8, wherein a fixed rotating portion (1241) is disposed at one end of the fixed pressing plate (124) close to the moving block (11), a fixed matching portion (1231) is disposed on the fixed body (123), the synchronous belt tensioning device further comprises a fixed fastener (20), the fixed fastener (20) penetrates through the fixed pressing plate (124) and is locked to the fixed body (123), and the fixed pressing plate (124) is matched with the fixed matching portion (1231) through the fixed rotating portion (1241) to rotate relative to the fixed body (123);

and/or one end of the movable pressing plate (113) close to the fixed block (12) is provided with a movable rotating part (1131), a movable matching part (1121) is arranged on the movable body (112), the synchronous belt tensioning device further comprises a movable fastening piece (30), the movable fastening piece (30) penetrates through the movable pressing plate (113) and is locked on the movable body (112), and the movable pressing plate (113) is matched with the movable matching part (1121) through the movable rotating part (1131) to rotate relative to the movable body (112).

10. The synchronous belt tensioning device according to claim 8, wherein a plurality of fixed limiting grooves (1242) are formed in the side surface of the fixed pressing plate (124) facing the fixed body (123), a fixed accommodating groove (126) is formed in the side surface of the fixed body (123) facing the fixed pressing plate (124), the fixed body (123) is covered in the fixed accommodating groove (126), a plurality of movable limiting grooves (1132) are formed in the side surface of the movable body (112) facing the movable pressing plate (113), a movable accommodating groove (116) is formed in the side surface of the movable body (112) facing the movable pressing plate (112), the movable body (112) is covered in the movable accommodating groove (116), the fixed accommodating groove (126) and the movable accommodating groove (116) are used for accommodating the synchronous belt, and the fixed limiting grooves (1242) and the movable limiting grooves (1132) are used for meshing with each other.

11. The synchronous belt tensioning device according to any one of claims 1, 2 and 4 to 8, wherein a guide portion (115) is arranged on the moving block (11), and the guide portion (115) is located on two sides of one end of the fixed block (12) and used for guiding the movement of the moving block (11).

12. A door machine with a synchronous belt tensioning device, characterized by comprising a synchronous belt and the synchronous belt tensioning device as claimed in any one of claims 1 to 11, wherein the fixed clamping portion (122) and the movable clamping portion (111) clamp the synchronous belt.

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