CN114607712B - Lever mechanism and clutch - Google Patents

Abstract

There is provided a lever mechanism comprising: toggle assembly, comprising: a housing; the pendulum shaft is rotatably arranged on the shell; the shifting fork is sleeved outside the pendulum shaft and is arranged to swing around the pendulum shaft; the transmission assembly is arranged outside the shell; the driving assembly is arranged outside the shell and drives the shifting fork to swing from the first position to the second position through the transmission assembly; and a locking assembly arranged to cooperate with the drive assembly to either retain the fork in the second position or to allow the fork to be reset to the first position. There is also provided a clutch comprising: a first gear; a second gear arranged to move relative to the first gear between an engaged position and a disengaged position; and a shift lever mechanism, a shift fork of which drives the second gear to move between an engaged position and a disengaged position relative to the first gear. The relative position of the second gear and the first gear is changed by driving the shift lever mechanism at a longer distance.

Description

Lever mechanism and clutch

Technical field

At least one embodiment of the present disclosure relates to a clutch device, and in particular to a remotely operated lever mechanism and a clutch including such a lever mechanism.

Background technique

In the mechanical field, there is often a need to adjust a component between two or more positions. In some work scenarios that are dangerous or unsuitable for personnel to enter, the positions of the above components need to be adjusted through remote control.

For example, a certain transmission equipment has been in an environment containing radioactive gas for a long time. During regular maintenance of the transmission equipment, it is necessary to separate the gears and racks at the end of the transmission equipment so that the racks can be extracted for maintenance. After the maintenance is completed, the gears and racks need to be removed. The rack is inserted back into its original position to return to working condition. In the above work scenario, it is necessary to provide a method that can move the gear through remote control without personnel entering the work scenario, so that the position of the gear changes.

Contents of the invention

The present disclosure provides a lever mechanism, which includes: a toggle component, including: a casing; a swing shaft, which is rotatably installed on the casing; and a shift fork, which is set outside the swing shaft and is provided to be able to swing around the swing axis; a transmission component is provided outside the housing; a driving component is provided outside the housing, and drives the shift fork to swing from the first position to the second position through the transmission component position; and a locking component configured to cooperate with the drive component to maintain the shift fork in the second position or allow the shift fork to return to the first position.

The present disclosure also provides a clutch, including: a first gear; a second gear configured to move between an engagement position and a disengagement position relative to the first gear; and a lever mechanism, a shift fork of the lever mechanism The second gear is driven to move between an engaged position and a disengaged position relative to the first gear.

Description of the drawings

From the following description of the present disclosure with reference to the accompanying drawings, other objects and advantages of the present disclosure will be apparent and may help to have a comprehensive understanding of the present disclosure.

Figure 1 is a schematic structural diagram of a lever mechanism according to an embodiment of the present disclosure;

Figure 2 is a partial cross-sectional view of the toggle assembly portion in the illustrative embodiment shown in Figure 1;

Figure 3 is a schematic diagram of the position change of the transmission component part in the schematic embodiment shown in Figure 1;

Figure 4 is a schematic diagram of the position change of the driving assembly part in the schematic embodiment shown in Figure 1;

Figure 5 is a simplified schematic diagram of a clutch according to an embodiment of the present disclosure;

Figure 6 is an axial cross-sectional schematic view of a combination of a shift fork and a gear of a clutch according to an embodiment of the present disclosure; and

FIG. 7 is a radial cross-sectional view of the combination of the shift fork and the gear of the clutch shown in FIG. 6 .

It should be noted that, for the sake of clarity, in the drawings used to describe embodiments of the present disclosure, the dimensions of structures or regions may be exaggerated or reduced, that is, the drawings are not drawn according to actual scale.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present disclosure.

Unless otherwise defined, technical terms or scientific terms used in this disclosure shall have their ordinary meanings understood by those of ordinary skill in the art. "First", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprising" mean that the elements or things appearing before the word include the elements or things listed after the word and their equivalents, without excluding other elements or things.

In this document, unless otherwise specified, directional terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to refer to the orientation or position based on the figures shown. The relationship is merely to facilitate description of the present disclosure and does not indicate or imply that the referred device, element or component must have a specific orientation, be constructed or operate in a specific orientation. It should be understood that when the absolute position of the described objects changes, the relative positional relationship they represent may also change accordingly. Therefore, these directional terms are not to be construed as limitations of the present disclosure.

Figure 1 is a schematic structural diagram of a lever mechanism according to an embodiment of the present disclosure; Figure 2 is a partial cross-sectional view of the dialing component in the illustrative embodiment shown in Figure 1; Figure 3 is a transmission component in the illustrative embodiment shown in Figure 1 A schematic diagram of the position change of the part; FIG. 4 is a schematic diagram of the position change of the driving assembly part in the schematic embodiment shown in FIG. 1 .

Embodiments of the present disclosure provide a lever mechanism, as shown in Figures 1 and 2, which is provided at the connection position of two components that require relative displacement (for example, two meshed gears) to move one component relative to the other. When another component moves between at least two relative positions, the above-mentioned lever mechanism includes: a toggle component 1, a transmission component 2 and a locking component 5. The toggle assembly 1 includes a housing 11; a swing shaft 12 rotatably mounted on the housing 11; and a shift fork 13 that is mounted on the outside of the swing shaft 12. The shift fork 13 is configured to swing around the swing shaft 12 to drive one of the two components. One part moves relative to another part. The transmission assembly 2 is arranged outside the housing 11; the driving assembly 4 is arranged outside the housing 11, and drives the fork 13 to swing from the first position to the second position through the transmission assembly 2; the locking assembly 5 is arranged to cooperate with the driving assembly 4, So as to keep the shift fork 13 in the second position or allow the shift fork 13 to be reset to the first position.

According to an embodiment of the present disclosure, the lever mechanism further includes a cable 3 connected between the driving component 4 and the transmission component 2 , so that the driving component 4 drives the transmission component 2 remotely through the cable 3 . In this way, by setting a suitable length of the cable 3, the span between the driving assembly 4 and the transmission assembly 2 can be greatly increased, so that the toggle assembly can be controlled to change its position from a longer distance. For example, the two components driven by the shift fork are in an environment containing harmful gases, harmful radiation, or prone to explosion, or in an environment with a small operating space.

In an illustrative embodiment, the housing 11 includes but is not limited to a housing 11 for separately installing the dial assembly 1 , and can also be any installation structure that can provide a mounting surface for the balance shaft 12 . For example, if the lever mechanism is a functional component used by a certain device to realize some functions, the inner wall or shell of the device can be used as the housing 11 of the lever assembly 1 .

In an illustrative embodiment, the connection position between the balance shaft 12 and the shift fork 13 and the transmission assembly 2 can be set as a square shaft, and the matching shift fork 13 should be provided with a square hole 131 that matches the square shaft. Such an implementation helps to reduce the use of additional connectors and facilitates assembly.

In another illustrative embodiment, the part connecting the balance shaft 12 and the housing 11 can be designed as a circular axis to facilitate relative rotation between the balance shaft 12 and the housing 11 . It should be understood that embodiments of the present disclosure are not limited thereto.

For example, the balance shaft 12 can adopt a circular shaft structure, and corresponding components (such as key components, hoops, etc.) are installed at the positions connected to the transmission assembly 2 and the shift fork 13 to limit the relative position of the transmission assembly 2 and the shift fork 13. The balance shaft 12 is slipping.

According to the embodiment of the present disclosure, the swing axis 12 is disposed along the horizontal direction to drive the shift fork 13 to swing in the vertical plane. In such an embodiment, since the shift fork 13 swings in the vertical direction, when the shift fork 13 returns from a higher position to a lower position, it can be realized by the dead weight of the shift fork 13 . It should be understood that embodiments of the present disclosure are not limited thereto.

For example, the swing shaft 12 can be arranged in the vertical direction, and the corresponding shift fork 13 swings in the horizontal direction. At this time, a driving device (such as a motor, etc.) should be added to provide a force in the opposite direction to the shift fork 13 to reset the shift fork 13 to the first position.

According to an embodiment of the present disclosure, as shown in FIG. 3 , the transmission assembly 2 includes a transmission handle 22 and a guide handle 23 . The first end of the transmission handle 22 is installed on the end of the balance shaft 12 extending from the housing 11 and extends outward along the radial direction of the balance shaft 12; the guide handle 23 is pivotably installed on the second end of the transmission handle 22 , the linear movement of the guide handle 23 is used to pull the balance shaft to rotate in a circumferential direction, and the first connecting portion is provided on the guide handle 23 for connecting with the first end of the cable 3 . In this way, the linear motion displacement of the guide handle 23 drives the circular motion of the pendulum shaft, simplifying the control method to facilitate remote control.

In an illustrative embodiment, the cable 3 includes but is not limited to the use of less elastic rigging such as steel wire ropes and steel cables. It is appropriate that the deformation amount of the cable 3 after being stressed does not affect the position change of the transmission component 2.

In an illustrative embodiment, the transmission handle 22 and the first end of the balance shaft 12 are assembled through a kit 21. The above-mentioned kit includes but is not limited to gaskets and bolts, which facilitates the connection between the transmission handle 22 and the balance shaft 12. Corresponding parts that are tight or help the swing shaft 12 swing more smoothly.

In detail, both the transmission handle 22 and the guide handle 23 adopt straight rods, and the ends on the same side of the two straight rods are pivoted through a pin. When the second end of the guide handle 23 is pulled, the first end of the guide handle 23 The displacement occurs synchronously with the transmission handle 22 , so that the part connecting the transmission handle 22 and the balance shaft 12 swings with the balance shaft 12 as the axis. It should be understood that embodiments of the present disclosure are not limited thereto.

For example, the transmission handle 22 and/or the guide handle 23 may adopt a crank rod structure or other structures that can drive the transmission handle 22 to swing in a circumferential direction in a linear movement manner.

According to an embodiment of the present disclosure, as shown in FIG. 4 , the driving assembly 4 includes a mounting base 44 , a moving rod 42 movably mounted in the mounting base 44 along a first direction, and a second connecting portion 46 . The second connecting part 46 is provided on the moving rod 42 for connecting with the second end of the cable 3 .

In an illustrative embodiment, the first direction is represented by the vertical direction, and the moving rod 42 is installed in the mounting base 44 so as to be movable along the vertical direction.

In another illustrative embodiment, the first direction is represented as a horizontal direction, and the moving rod 42 is telescopically installed in the mounting base 44 along the horizontal direction. It should be understood that embodiments of the present disclosure are not limited thereto.

For example, the first direction may be characterized as an oblique, tangential, circumferential or other displacement direction in which the moving rod 42 and the mounting base 44 are displaced relative to each other.

According to an embodiment of the present disclosure, a limiting groove 43 is formed on the surface of a portion of the moving rod 42 located within the mounting seat 44 . The locking assembly includes a limiting block 51 slidably installed in the mounting base 44 along a second direction perpendicular to the first direction. The limiting block 51 can cooperate with the limiting groove 43 to prevent further movement of the moving rod, This keeps the fork in the pulled position.

According to an embodiment of the present disclosure, the locking assembly further includes: a guide stop 53 protruding from the end of the limit block 51 away from the moving rod 42 of the mounting base 44, and an elastic member disposed between the limit block 51 and the mounting base 44. Pressure member 52. The elastic pressing member 52 is used to exert pressure on the limiting block 51 close to the moving rod 42. In this way, when the external pulling force disappears, the elastic pressing member 52 will elastically drive the limiting hole 51 to be integrated into the limiting groove.

In an exemplary embodiment, the elastic pressure member 52 includes, but is not limited to, a pressure spring.

In detail, the outer periphery of the limiting block 51 protrudes outward to form a flange, and a pressure spring is installed between the end surfaces of the flange opposite to the mounting seat 44 , and the pressure spring is sleeved on the outside of the guide stop 53 .

According to an embodiment of the present disclosure, the moving rod 42 includes an operating portion 41 extending from the mounting base 44; and a blocking flange 47 protruding outward from the operating portion 41 to prevent the operating portion from moving into the mounting base 44. The second connecting portion 46 is provided at the opposite ends of the moving rod 42 and the operating portion 41 and extends from the mounting base 44 .

In an illustrative embodiment, the operating portion 41 (upper end) and the fixing portion 45 (lower end) are integrally mounted with the second connecting portion 46 .

In detail, the operating part 41 includes but is not limited to a conical shape, a frustum shape, a cylindrical shape, a truncated cone shape, or any other special-shaped structure that is convenient for the operator to grasp.

In detail, the fixing part 45 includes, but is not limited to, any one of a cylinder, a cube, or a polyhedron.

Furthermore, during operation, a claw adapted to the shape of the operating part 41 should also be provided to fit with at least part of the operating part 41 to facilitate long-distance traction of the moving rod 42 or to amplify the traction torque. wait.

In an illustrative embodiment, the displacement that the moving rod 42 can occur relative to the mounting base 44 should be adapted to the displacement change of the transmission handle 22 in the transmission assembly 2, so that the moving rod 42 can exactly move during the movement. The transmission assembly 2 drives the swing shaft 12 to rotate at a suitable angle, so that the shift fork 13 moves from the first position to the second position.

In an illustrative embodiment, the second connection part 46 includes: a nut sleeve 461 coupled to the end of the moving rod 42 , a screw 462 threadably mated with the nut sleeve 461 , and a screw 462 connected between the outside of the nut sleeve 461 and the screw 462 . The anti-loosening wire 463 is used to limit the separation of the screw 462 from the nut sleeve 461.

In detail, the first connecting part and the second connecting part 46 may adopt the same structure to be fixed to the two ends of the cable respectively. It should be understood that embodiments of the present disclosure are not limited thereto.

For example, the first connection part includes a screw and nut sleeve structure with an anti-separation function, so that the structure of the first connection part is different from that of the second connection part.

According to the embodiment of the present disclosure, the nut sleeve 461 is provided with a radially extending through hole 464 , and the anti-loosening wire 463 further passes through the through hole 464 and is connected to the moving rod 42 to limit the nut sleeve 461 from being detached from the moving rod 42 .

In an illustrative embodiment, the first end of the anti-loosening wire 463 passes through and is fixed on the fixed part 45 of the connecting rod 42, the second end of the anti-loosening wire 463 passes through and is fixed on the screw 462, and the anti-loosening wire 463 passes through and is fixed on the fixing part 45 of the connecting rod 42. The middle part of the loose steel wire 463 passes through the through hole 464. It is used to limit the relative rotation of the nut sleeve 461 and the screw 462, thereby restricting the screw 462 from being detached from the nut sleeve 461.

Figure 5 is a simplified schematic diagram of a clutch according to an embodiment of the present disclosure; Figure 6 is an axial cross-sectional schematic diagram of the combination of a shift fork and a gear of the clutch according to an embodiment of the present disclosure; Figure 7 is a diagram of the shift fork and gear of the clutch shown in Figure 6 Diagram of radial section of gear combination.

According to another aspect of the present disclosure, a clutch is also provided, as shown in Figures 5-7, including a first gear 62, a second gear 61 and a lever mechanism. The second gear 61 is configured to move between an engaging position and a disengaged position relative to the first gear 62; the shift fork 13 of the lever mechanism is used to drive the second gear 61 between the engaging position and the disengaged position relative to the first gear 62. Move between locations. For example, movement of the shift fork between the first position and the second position drives the second gear 61 to move relative to the first gear 62 between the engaged position and the disengaged position.

According to an embodiment of the present disclosure, the axes of the first gear 62 and the second gear 61 are parallel to each other.

In an illustrative real-time manner, the first gear 62 and the second gear 61 are arranged in parallel along the horizontal direction. It should be understood that the embodiment of the present disclosure is not limited to this. The first gear 62 and the second gear 61 can also be arranged in parallel along the vertical direction. Correspondingly, the lever mechanism should also be arranged to drive the second gear 61 in the horizontal direction. move.

According to the embodiment of the present disclosure, the extension direction of the balance shaft 12 is perpendicular to the axial direction of the second gear 61, and the end of the second gear opposite to the first gear is provided with a radially outwardly protruding rim 611. The fork 13 disengages the first gear 62 and the second gear 61 from each other by pushing the rim.

In an illustrative embodiment, the second gear 61 is located above the first gear 62 . When the second gear 61 returns to the position of meshing with the first gear 62, it can be reset by its own weight.

According to the embodiment of the present disclosure, the shift fork 13 includes two symmetrically arranged fork heads 132 , and the two fork heads 132 are clamped on both radial sides of the second gear 61 respectively. Such an implementation makes the force application more stable and balanced when the shift fork 13 applies force in the axial direction to the second gear 61 .

According to the lever mechanism and clutch of the above embodiments of the present disclosure, a driving mechanism suitable for remote operation is used to drive the transmission mechanism to operate, thereby controlling the meshing and disengagement of the two gears, which can prevent the operator from contacting harmful gases in the environment where the gears are located; The gear mesh can be separated without dismantling the reduction gearbox, eliminating the need to disassemble the equipment's reduction gearbox; the drive mechanism has a self-locking function, which is highly safe; the operating part of the drive mechanism is equipped with a grab head and a sliding shaft, making it easy to operate.

Those skilled in the art will understand that the features described in the various embodiments and/or claims of the present invention can be combined or/or combined in various ways, even if such combinations or combinations are not explicitly described in the present invention. In particular, various combinations and/or combinations of features recited in the various embodiments and/or claims of the invention may be made without departing from the spirit and teachings of the invention. All such combinations and/or combinations fall within the scope of the invention.

Although some embodiments according to the general technical concept of the present disclosure have been shown and described, those of ordinary skill in the art will understand that changes may be made in these embodiments without departing from the principles and spirit of the general technical concept of the present disclosure. The scope of the disclosure is defined by the claims and their equivalents.

Claims (9)

1. A lever mechanism, characterized in that it includes: Toggle assembly (1), including: shell(11); The swing shaft (12) is rotatably installed on the housing (11); The shift fork (13) is sleeved on the outside of the balance shaft (12) and is configured to swing around the balance shaft (12); The transmission component (2) is arranged outside the housing (11); A driving assembly (4) is arranged outside the housing (11) and drives the shift fork (13) to swing from the first position to the second position through the transmission assembly (2); and A locking assembly (5) configured to cooperate with the driving assembly (4) to maintain the shifting fork (13) in the second position or to allow the shifting fork (13) to return to the first position. Location; The lever mechanism also includes a cable (3) connected between the driving assembly (4) and the transmission assembly (2), so that the driving assembly (4) drives the driving assembly through the cable (3). Transmission components (2); The cable (3) is a rigid cable; The transmission assembly (2) includes: A transmission handle (22). The first end of the transmission handle (22) is installed at the end of the balance shaft (12) extending from the housing (11) and along the diameter of the balance shaft (12). Extend outward in the direction; The guide handle (23) is pivotally installed at the second end of the transmission handle (22), and is used to pull the circumferential rotation of the swing shaft (12) through the linear movement of the guide handle (23); as well as The first connecting part is provided on the guide handle (23) and is used to connect with the first end of the cable (3); The driving assembly (4) includes a second connecting portion (46) for connecting with the second end of the cable (3); The first connecting part and the second connecting part (46) have the same structure; The driving component (4) also includes: Mounting base (44); The moving rod (42) is movably installed in the mounting base (44) along the first direction; The second connecting part (46) is provided on the moving rod (42); The second connection part (46) includes: Nut sleeve (461), combined with the end of the moving rod (42); The screw (462) is threadedly matched with the nut sleeve (461), and the screw (462) is connected to the end of the cable (3); and Anti-loosening wire (463), connected between the nut sleeve (461) and the outside of the screw (462), to restrict the screw (462) from detaching from the nut sleeve (461); The nut sleeve (461) is provided with a radially extending through hole (464), and the anti-loosening steel wire (463) further passes through the through hole (464) and is connected to the moving rod (42). To limit the nut sleeve (461) from being detached from the moving rod (42). 2. The lever mechanism according to claim 1, characterized in that the swing axis (12) is arranged along the horizontal direction to drive the shift fork (13) to swing in a vertical plane. 3. The lever mechanism according to claim 1, characterized in that a limiting groove (43) is formed on the side surface of the part of the moving rod (42) located in the mounting seat (44), The locking assembly (5) includes: The limiting block (51) is slidably installed in the mounting seat (44) along the second direction perpendicular to the first direction. The limiting block (51) can be connected with the limiting groove (43). Fit to prevent further movement of the moving rod (42). 4. The lever mechanism according to claim 3, characterized in that the locking assembly (5) further includes: A guide column (53) extends from the limiting block (51) away from the moving rod (42) and extends out of the mounting seat (44); An elastic pressure member (52) is provided between the limiting block (51) and the mounting base (44) to exert pressure on the limiting block (51) close to the moving rod (42). pressure. 5. The lever mechanism according to claim 1, characterized in that the moving lever (42) includes: The operating part (41) extends from the mounting base (44) to facilitate the operator to perform grabbing control; and The blocking flange (47) protrudes radially outward from the operating part (41) to block the operating part (41) from moving into the mounting seat (44), The second connecting part (46) is connected to an end of the moving rod (42) extending from the mounting base (44) and opposite to the operating part (41). 6. A clutch, characterized in that it includes: First gear(62); a second gear (61) arranged to move relative to said first gear (62) between an engaged position and a disengaged position; and The lever mechanism according to any one of claims 1 to 5, the fork of the lever mechanism drives the second gear (61) in the meshing position relative to the first gear (62). and move between the disengagement position. 7. The clutch according to claim 6, characterized in that the axes of the first gear (62) and the second gear (61) are parallel to each other. 8. The clutch according to claim 7, characterized in that the extension direction of the swing shaft (12) is perpendicular to the axial direction of the second gear (61), The end of the second gear opposite to the first gear is provided with a radially outwardly protruding rim (611), and the shift fork (13) pushes the rim so that the first gear and The second gears are disengaged from each other. 9. The clutch according to claim 8, characterized in that the shift fork (13) includes two forks, which are symmetrically arranged and clamped on the second gear (61) respectively. Radially on both sides.