Shaft tooth subassembly locking device

Abstract

The shaft tooth subassembly locking device comprises a support, a sliding rail, a connecting rod mechanism and two oppositely-arranged clamping arms, the sliding rail is fixedly connected to the support, the two clamping arms are slidably connected to the sliding rail, and the two clamping arms are in transmission connection with the connecting rod mechanism. The connecting rod mechanism is used for driving the two clamping arms to move oppositely or oppositely in the length direction of the sliding rail, so that the two clamping arms have a clamping state for clamping the shaft tooth subassembly or a releasing state for releasing the shaft tooth subassembly. The connecting rod mechanism is controlled to drive the two oppositely-arranged clamping arms to oppositely slide on the sliding rail in the length direction of the sliding rail, the clamping arms can be clamped on the two sides of the shaft tooth subassembly or disengaged from the two sides of the shaft tooth subassembly, then the shaft tooth subassembly can be rapidly disassembled and assembled, and the shaft tooth subassembly disassembling tool has the advantages of being simple in structure and convenient to operate.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of shaft-tooth subassembly locking devices, in particular to a shaft-tooth subassembly locking device. BACKGROUND

[0002] In the field of conventional transmissions and new energy transmissions, shaft teeth are important components. During the tightening or loosening operation of the shaft end locking nut, the shaft tooth needs to be fixed by a clamping device. In related technologies, the clamping device has a relatively complex structure and is inconvenient to operate, which restricts the disassembly efficiency of the shaft-tooth subassembly by the operator. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the present disclosure is to provide a shaft-tooth subassembly locking device to solve the technical problems existing in related technologies.

[0004] In order to achieve the above-mentioned purpose, the present disclosure provides a shaft-tooth subassembly locking device, comprising:

[0005] a support;

[0006] two oppositely arranged clamping arms;

[0007] a slide rail fixedly connected to the support, and two clamping arms are respectively slidingly connected to the slide rail;

[0008] a linkage mechanism, two clamping arms are respectively drivingly connected to the linkage mechanism, and the linkage mechanism is used to drive two clamping arms to move towards each other or move away from each other along the length direction of the slide rail, so that two clamping arms have a clamping state of clamping a shaft-tooth subassembly or a release state of releasing a shaft-tooth subassembly.

[0009] Optionally, the linkage mechanism comprises a driving linkage, a first driven linkage group and a second driven linkage group, the driving linkage is hinged to the support through a hinge shaft, the first end of the first driven linkage group and the first end of the second driven linkage group are respectively drivingly connected to the driving linkage, the second end of the first driven linkage group and the second end of the second driven linkage group are respectively connected to one clamping arm, and the first driven linkage group and the second driven linkage group are configured to drive two clamping arms to move towards each other or move away from each other at the same time when the driving linkage rotates around the hinge shaft.

[0010] Optionally, the driving linkage comprises a first segment and a second segment connected to each other, the first segment and the second segment are configured in an L shape, and the hinge shaft is hinged to the connection between the first segment and the second segment.

[0011] The first driven link set comprises a first link and a second link, a first end of the first link is hinged to a first end of the second link, a second end of the first link is hinged to one end of the first segment away from the second segment, and a second end of the second link is connected to one of the clamping arms.

[0012] The second driven link set comprises a third link and a fourth link, the third link is configured in an L shape, a first end of the third link is hinged to a first end of the fourth link, a second end of the third link is hinged to the first segment, and a second end of the fourth link is connected to the other clamping arm.

[0013] Optionally, the shaft tooth assembly locking device further comprises a first locking member, a first locking hole is formed on the link mechanism, and the first locking member is unlocked and locked in the first locking hole to limit the movement of the two clamping arms.

[0014] Optionally, each clamping arm comprises a clamping part and a connecting part connected to each other, the connecting part is connected between the link mechanism and the clamping part, and the two clamping parts are used for clamping on both sides of the shaft tooth assembly.

[0015] Optionally, the clamping arm further comprises a clamping jaw, and the clamping jaw is detachably connected to the clamping part.

[0016] Optionally, the profile of the side of the clamping part in contact with the shaft tooth assembly matches the profile of the shaft tooth assembly.

[0017] Optionally, the shaft tooth assembly locking device further comprises a limiting member, the limiting member is connected with the support and protrudes from the outer surface of the support, the limiting member is arranged on the side of one clamping arm away from the other clamping arm, and is used for stopping the clamping arm.

[0018] Optionally, the shaft tooth assembly locking device further comprises a position detection mechanism, the position detection mechanism is connected with the support, and is used for detecting the position of the clamping arm.

[0019] Optionally, the shaft tooth assembly locking device further comprises an elastic assisting mechanism, the elastic assisting mechanism comprises an elastic column and a fixing block, the fixing block is connected with the support, one end of the elastic column is connected with the link mechanism, the other end of the elastic column is connected with the fixing block, and the elastic column is in a pre-tensioned state.

[0020] By the above technical scheme, when the shaft-tooth subassembly needs to be disassembled or assembled, the shaft-tooth subassembly can be placed between the two clamping arms, the two oppositely arranged clamping arms are driven to slide along the length direction of the slide rail by operating the connecting rod mechanism, so that the clamping arms are clamped on both sides of the shaft-tooth subassembly, thereby realizing the fixation of the shaft-tooth subassembly to facilitate the disassembly and assembly operation of the shaft-tooth subassembly; after the disassembly and assembly of the shaft-tooth subassembly are completed, the two clamping arms can be driven to move away from each other along the length direction of the rail by reversing the connecting rod mechanism, and the clamping arms are moved to the release state, thereby releasing the disassembled and assembled shaft-tooth subassembly and preparing for the next clamping operation.

[0021] In the above technical scheme provided by the present disclosure, the two clamping arms can be adjusted to the clamping state or the release state only by the cooperation between the connecting rod mechanism and the slide rail, which has the advantages of simple structure and convenient operation, can reduce the operation intensity of the operator and improve the operation efficiency.

[0022] Other features and advantages of the present disclosure will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and together with the following specific embodiments, serve to explain the present disclosure but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 is a perspective view of the shaft-tooth subassembly locking device provided by an exemplary embodiment of the present disclosure;

[0025] Figure 2 is an enlarged view of part A of Figure 1

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 1 - shaft-tooth subassembly locking device; 10 - support; 20 - clamping arm; 21 - clamping part; 22 - connecting part; 23 - clamping jaw; 24 - reinforcing rib; 30 - slide rail; 40 - connecting rod mechanism; 41 - driving connecting rod; 410 - hinged shaft; 411 - first section; 412 - second section; 42 - first driven connecting rod group; 421 - first connecting rod; 422 - second connecting rod; 43 - second driven connecting rod group; 431 - third connecting rod; 432 - fourth connecting rod; 50 - first locking member; 60 - limiting member; 70 - position detection mechanism; 80 - elastic power assisting mechanism; 81 - elastic column; 82 - fixed block; 90 - screw plunger. DETAILED DESCRIPTION

[0028] ​The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended for description and explanation of the present disclosure and are not intended to limit the present disclosure.

[0029] In the present disclosure, the orientation words such as "upper", "lower", "left", "right" and the like used without the opposite description only indicate the orientation or position relationship for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, and a specific orientation configuration and operation, therefore, cannot be understood as a limitation on the present disclosure, and the terms "inner" and "outer" refer to the inner and outer of the corresponding structure profile.

[0030] In addition, it should be noted that the terms such as "first", "second" and the like are used to distinguish one element from another element, and do not have sequentiality and importance. In addition, in the description with reference to the drawings, the same reference signs in different drawings represent the same elements.

[0031] In the description of the present disclosure, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "connected", "connected", "mounted" should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0032] Reference Figures 1 to 2 As shown in the drawings, the present disclosure provides a shaft and gear assembly locking device 1, which comprises a support 10, a sliding rail 30, a connecting rod mechanism 40 and two oppositely arranged clamping arms 20, the sliding rail 30 is fixedly connected to the support 10, the two clamping arms 20 are respectively slidably connected to the sliding rail 30, the two clamping arms 20 are respectively in transmission connection with the connecting rod mechanism 40, and the connecting rod mechanism 40 is used to drive the two clamping arms 20 to move towards each other or move away from each other along the length direction of the sliding rail 30, so that the two clamping arms 20 have a clamping state of clamping the shaft and gear assembly or a release state of releasing the shaft and gear assembly.

[0033] By the above technical scheme, when the shaft-tooth subassembly needs to be disassembled or assembled, the shaft-tooth subassembly can be placed between the two clamping arms 20, and the two oppositely arranged clamping arms 20 are driven to slide along the length direction of the slide rail 30 by operating the connecting rod mechanism 40, so that the clamping arms 20 are clamped on both sides of the shaft-tooth subassembly, thereby realizing the fixation of the shaft-tooth subassembly to facilitate the disassembly and assembly of the shaft-tooth subassembly; after the disassembly and assembly of the shaft-tooth subassembly are completed, the two clamping arms 20 can be driven to move away from each other along the length direction of the track by reversing the connecting rod mechanism 40, and the clamping arms 20 are moved to the release state, thereby releasing the disassembled shaft-tooth subassembly and preparing for the next clamping operation.

[0034] In the above technical scheme provided by the present disclosure, the two clamping arms 20 can be adjusted to the clamping state or the release state only by the cooperation between the connecting rod mechanism 40 and the slide rail 30, which has the advantages of simple structure and convenient operation, and can reduce the work intensity of the operator and improve the work efficiency.

[0035] It should be noted that the present disclosure does not limit the specific shape and structure of the above connecting rod mechanism 40, as long as the two clamping arms 20 can be driven to move towards each other or move away from each other along the length direction of the slide rail 30, for example, in an embodiment provided by the present disclosure, the connecting rod mechanism 40 can include a driving connecting rod 41, a first driven connecting rod group 42 and a second driven connecting rod group 43, the driving connecting rod 41 is hinged to the support 10 through a hinge shaft 410, the first ends of the first driven connecting rod group 42 and the second driven connecting rod group 43 are respectively in transmission connection with the driving connecting rod 41, the second ends of the first driven connecting rod group 42 and the second driven connecting rod group 43 are respectively connected with one clamping arm 20, and the first driven connecting rod group 42 and the second driven connecting rod group 43 are configured to drive the two clamping arms 20 to move towards each other or move away from each other simultaneously when the driving connecting rod 41 rotates around the hinge shaft 410. Figure 1 Figure 2 The first ends of the first driven connecting rod group 42 and the second driven connecting rod group 43 are respectively in transmission connection with the driving connecting rod 41, the second ends of the first driven connecting rod group 42 and the second driven connecting rod group 43 are respectively connected with one clamping arm 20, and the first driven connecting rod group 42 and the second driven connecting rod group 43 are configured to drive the two clamping arms 20 to move towards each other or move away from each other simultaneously when the driving connecting rod 41 rotates around the hinge shaft 410.

[0036] The end of the above driving connecting rod 41 away from the first driven connecting rod group 42 and the second driven connecting rod group 43 should be arranged protruding from the support 10, so as to provide space for the rotation of the driving connecting rod 41 to facilitate the operator to operate the driving connecting rod 41 to rotate upward (clockwise) or downward (counterclockwise) around the hinge shaft 410.​

[0037] For example, in one embodiment provided by the present disclosure, as shown in Figure 1 , the part of the driving link 41 protruding from the support 10 is formed as an operation handle.

[0038] In one exemplary embodiment provided by the present disclosure, as shown in Figure 2 , the driving link 41 can include a first segment 411 and a second segment 412 connected to each other, the first segment 411 and the second segment 412 are configured as an L shape, and the hinge shaft 410 is hinged at the connection between the first segment 411 and the second segment 412; the first driven link set 42 includes a first link 421 and a second link 422, the first end of the first link 421 is hinged with the first end of the second link 422, the second end of the first link 421 is hinged with one end of the second segment 412 away from the first segment 411, and the second end of the second link 422 is connected with one clamping arm 20; the second driven link set 43 includes a third link 431 and a fourth link 432, the third link 431 is configured as an L shape, the first end of the third link 431 is hinged with the first end of the fourth link 432, the second end of the third link 431 is hinged with the first segment 411, and the second end of the fourth link 432 is connected with the other clamping arm 20. Specifically, when it is needed to disassemble or assemble the shaft-tooth subassembly, the first segment 411 of the driving link 41 can be pressed down to drive the third link 431 hinged on the first segment 411 to move and drive the fourth link 432 connected with the third link 431 to move, and since the third link 431 is configured as an L shape, when the driving link 41 drives the second end of the third link 431 to move, the first end of the third link 431 can be displaced horizontally, thereby driving the fourth link 432 and the clamping arm 20 connected with the second end of the fourth link 432 to move horizontally, and at the same time, when the driving link 41 rotates around the hinge shaft 410, it can also drive the first link 421 hinged with the first end of the driving link 41 to move horizontally, thereby driving the second link 422 and the other clamping arm 20 connected with the second end of the second link 422 to move horizontally, so that the two clamping arms 20 can approach or move away from each other, realizing clamping or releasing of the shaft-tooth subassembly.

[0039] Optionally, as shown in Figure 1 , Figure 2As shown, the shaft gear assembly locking device 1 may further include a first locking member 50. A first locking hole is formed on the linkage mechanism 40. The first locking member 50 is unlockably locked in the first locking hole to restrict the movement of the two clamping arms 20. Through the first locking member 50, the linkage mechanism 40 can be locked, thereby achieving the positioning of the two clamping arms 20. This prevents the two clamping arms 20 from shifting or loosening during the disassembly or assembly of the shaft gear assembly, thus preventing the shaft gear assembly from falling off or being damaged.

[0040] It should be noted that the two clamping arms 20 can be positioned to any suitable position by means of the first locking member 50. For example, the first locking member 50 can be locked onto the linkage mechanism 40 when the two clamping arms 20 are clamped during adjustment by the linkage mechanism 40. The first locking member can also be locked onto the linkage mechanism 40 when the two clamping arms 20 are released during adjustment by the linkage mechanism 40.

[0041] In this disclosure, the first locking member 50 can press the linkage mechanism 40 onto the support 10 by fastening, so that the linkage mechanism 40 can no longer move. Alternatively, a second locking hole that matches the first locking hole can be provided on the support 10, and the first locking member can be sequentially inserted into the first locking hole and the second locking hole to achieve relative fixation between the linkage mechanism 40 and the support 10.

[0042] To facilitate the clamping operation of the aforementioned clamping arm 20 on the gear sub-assemblies, in this disclosure, optionally, as follows: Figure 1 , Figure 2 As shown, each clamping arm 20 may include a clamping portion 21 and a connecting portion 22 connected to each other. The connecting portion 22 connects the linkage mechanism 40 and the clamping portion 21, and the two clamping portions 21 are used to clamp the two sides of the shaft gear assembly. Thus, during the clamping process of the shaft gear assembly, the linkage mechanism 40 can drive the connecting portion 22 to move, thereby causing the clamping portions 21 connected to the connecting portion 22 to move closer together and clamp the two sides of the shaft gear assembly, achieving a secure fastening of the shaft gear assembly. Furthermore, since the linkage mechanism 40 does not directly contact the clamping portion 21 during the above process, interference or disturbance between the linkage mechanism 40 and the clamping portion 21 during the clamping of the shaft gear assembly can be avoided.

[0043] To enhance the connection strength between the clamping part 21 and the connecting part 22, the clamping arm 20 may also include a reinforcing rib 24, which is connected between the connecting part 22 and the clamping part 21.

[0044] In one embodiment provided in this disclosure, such as Figure 1As shown, the reinforcing rib 24 can be formed in an L shape, the longitudinal portion of the reinforcing rib 24 can be welded to the connecting portion 22, and the transverse portion of the reinforcing rib 24 can be welded to the clamping portion 21.

[0045] For the above embodiment in which the connecting rod mechanism 40 includes the first driven connecting rod group 42 and the second driven connecting rod group 43, as shown in Figure 1 , Figure 2 the first driven connecting rod group 42 and the second driven connecting rod group 43 are respectively connected to the connecting portion 22 of the corresponding clamping arm 20.

[0046] Optionally, as shown in Figure 1 the clamping arm 20 can further include a clamping jaw 23, which is detachably connected to the clamping portion 21. The clamping jaw 23 connected to the clamping portion 21 can be more stably and firmly clamped on both sides of the shaft tooth assembly during clamping of the shaft tooth assembly, thereby improving the locking effect on the shaft tooth assembly. Moreover, since the clamping jaw 23 is detachably connected to the clamping portion 21, for different types of shaft tooth assemblies, the type of clamping jaw 23 can be replaced to better adapt to the shaft tooth assembly, thereby further improving the locking effect on the shaft tooth assembly.

[0047] The present disclosure does not limit the specific detachable connection manner between the clamping jaw 23 and the clamping portion 21. For example, the clamping jaw 23 and the clamping portion 21 can be connected by a threaded manner. Specifically, a mounting hole with an internal thread is formed on the clamping portion 21, an external thread is formed on the outer surface of one end of the clamping jaw 23, the clamping jaw 23 is installed in the mounting hole by screwing, and the external thread on the clamping jaw 23 is threadedly engaged with the internal thread on the mounting hole.

[0048] Alternatively, in another exemplary embodiment provided by the present disclosure, as shown in Figure 1 the clamping jaw 23 can also be detachably connected to the clamping portion 21 by screwing a plunger 90. Specifically, a first assembly hole and a second assembly hole are formed on the clamping portion 21, the first assembly hole and the second assembly hole are in communication, a positioning hole is formed on the clamping jaw 23, so that when the clamping jaw 23 is inserted into the first assembly hole, the positioning hole formed on the clamping jaw 23 is in communication and coaxially arranged with the second assembly hole. At this time, the plunger 90 is inserted into the second assembly hole and the positioning hole in sequence, thereby locking the clamping jaw 23.

[0049] In order to avoid damage to the structure of the outer surface of the shaft tooth assembly during clamping of the shaft tooth assembly, optionally, as shown in Figure 1As shown, the profile of the clamping portion 21 on the side in contact with the shaft tooth assembly matches the profile of the shaft tooth assembly. Since the clamping jaw 23 is adapted to the shape of the shaft tooth assembly, when the clamping portion 21 is clamped on the shaft tooth assembly, it can better fit the profile of the shaft tooth assembly, increasing the number of clamping points and the clamping area, thereby improving the stability of clamping, reducing the possibility of loosening or displacement of the gear during machining, and the clamping jaw 23 matching the profile of the shaft tooth assembly can uniformly distribute the clamping force, reduce the local pressure on the shaft tooth assembly, and reduce the deformation or damage of the shaft tooth assembly caused by improper clamping.

[0050] For clamping shaft tooth assemblies of different sizes, the size of the clamping jaw 23 can be adjusted as described above to adapt the distance between the two clamping arms 20, so that when the first locking member 50 is locked in the first locking hole, the two clamping arms 20 can clamp shaft tooth assemblies of different sizes.

[0051] Optionally, as shown, Figure 1 The shaft tooth assembly locking device 1 can also include a limiting member 60 connected to the support 10 and protruding from the outer surface of the support 10. The limiting member 60 is arranged on the side of one clamping arm 20 away from the other clamping arm 20 and is used to stop the clamping arm 20. During the movement of the two clamping arms 20 driven by the connecting rod mechanism 40, the limiting member 60 protruding from the outer surface of the support 10 can stop and limit the clamping arm 20 when it moves to a certain area, thereby limiting the movement area of the clamping arm 20 to avoid the clamping arm 20 from being pulled out of the slide rail 30 or colliding with or interfering with the support 10 and related structures near the support 10.

[0052] Since the two clamping arms 20 move synchronously towards each other or away from each other, only one limiting member 60 is needed to position one clamping arm 20, which can limit the other clamping arm 20. Therefore, the limiting member 60 can be arranged near either clamping arm 20.

[0053] In order to reduce the noise when the clamping arm 20 collides with the limiting member 60, the limiting member 60 can be a related structure with a buffering effect, such as a spring, a rubber pad, or a hydraulic valve member, and when the clamping arm 20 collides with the limiting member 60, the buffering structure can also absorb the collision energy of the clamping arm 20 and the limiting member 60, thereby prolonging the service life of the shaft tooth assembly locking device 1.

[0054] Optionally, as shown, Figure 1As shown, the shaft gear assembly locking device 1 may further include a position detection mechanism 70, which is connected to the support 10 and detects the position of the clamping arm 20. The position detection mechanism 70 can detect the specific position of the clamping arm 20, thereby determining whether the clamping arm 20 has successfully returned to its original position (reached the release state).

[0055] Specifically, such as Figure 1 As shown, the position detection mechanism 70 may include a distance sensor. Thus, when the linkage mechanism 40 drives the clamping arm 20 to move toward the distance sensor, when the distance between the clamping arm 20 and the distance sensor reaches a certain specific area, the position detection mechanism 70 determines that the clamping arm 20 has successfully returned to its original position. When the distance between the clamping arm 20 and the distance sensor reaches a certain specific area, the position detection mechanism 70 determines that the clamping arm 20 is in an unreturned state.

[0056] To further facilitate operators in knowing whether the clamping arm 20 is in the homing state, the aforementioned position detection mechanism 70 may also include an indicator light and / or a buzzer. The distance sensor is connected to the indicator light and / or buzzer signal and can turn on the indicator light and / or buzzer when the distance sensor detects that the clamping arm 20 is in the homing state.

[0057] Optionally, such as Figure 1 , Figure 2 As shown, the shaft gear assembly locking device 1 also includes an elastic assist mechanism 80. The elastic assist mechanism 80 includes an elastic column 81 and a fixed block 82. The fixed block 82 is connected to the support 10. One end of the elastic column 81 is connected to the linkage mechanism 40, and the other end of the elastic column 81 is connected to the fixed block 82. The elastic column 81 is in a pre-tensioned state. By setting the elastic assist mechanism 80, on the one hand, when driving the linkage mechanism 40 to move, the elastic assist mechanism 80 can provide a certain driving force for the movement of the linkage mechanism 40, thereby reducing the labor intensity of the operator. On the other hand, the elastic column 81 in the pre-tensioned state always has a tendency to recover its deformation. The setting of the elastic column 81 also makes it easier to provide driving force for the clamping arm 20 to return to the return state.

[0058] like Figure 1 , Figure 2 As shown, in the embodiment of the linkage mechanism 40 including the first link 421, the second link 422, the third link 431 and the fourth link 432, the elastic assist mechanism 80 is connected to the fourth link 432.

[0059] The preferred embodiments of the present disclosure are described in detail above with reference to the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Various simple modifications can be made to the technical solutions of the present disclosure within the technical concept of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure. In addition, it should be noted that, in the case where there is no contradiction, each specific technical feature described in the above-described specific embodiments can be combined in any appropriate manner. In order to avoid unnecessary repetition, the present disclosure will not describe various possible combination manners again.

[0060] In addition, any combination of various different embodiments of the present disclosure can also be made, as long as it does not deviate from the idea of the present disclosure, and it should also be considered as disclosed by the present disclosure.

Claims

1. A locking device for a shaft gear sub-assembly, characterized in that, include: Support; Two clamping arms positioned opposite each other; A slide rail is fixedly connected to the support, and the two clamping arms are slidably connected to the slide rail respectively; The linkage mechanism is used to drive the two clamping arms to move towards or away from each other along the length of the slide rail, so that the two clamping arms are in a clamping state of clamping the shaft gear assembly or in a releasing state of releasing the shaft gear assembly.

2. The shaft gear sub-assembly locking device according to claim 1, characterized in that, The linkage mechanism includes a driving link, a first driven link group, and a second driven link group. The driving link is hinged to the support via a hinge shaft. The first end of the first driven link group and the first end of the second driven link group are respectively connected to the driving link. The second end of the first driven link group and the second end of the second driven link group are respectively connected to one of the clamping arms. The first driven link group and the second driven link group are configured to drive the two clamping arms to move simultaneously toward each other or simultaneously away from each other when the driving link rotates around the hinge shaft.

3. The shaft gear sub-assembly locking device according to claim 2, characterized in that, The active link includes a first segment and a second segment connected to each other. The first segment and the second segment are L-shaped. The hinge shaft is hinged at the connection between the first segment and the second segment. The first driven linkage group includes a first link and a second link. The first end of the first link is hinged to the first end of the second link, the second end of the first link is hinged to the end of the second segment opposite to the first segment, and the second end of the second link is connected to a clamping arm. The second driven linkage group includes a third link and a fourth link. The third link is L-shaped. The first end of the third link is hinged to the first end of the fourth link, the second end of the third link is hinged to the first link, and the second end of the fourth link is connected to another clamping arm.

4. The shaft gear sub-assembly locking device according to any one of claims 1-3, characterized in that, The shaft gear assembly locking device further includes a first locking member, and a first locking hole is formed on the linkage mechanism. The first locking member is unlockably locked in the first locking hole to restrict the movement of the two clamping arms.

5. The shaft gear assembly locking device according to any one of claims 1-3, characterized in that, Each of the clamping arms includes a clamping portion and a connecting portion connected to each other, the connecting portion connecting between the linkage mechanism and the clamping portion, and the two clamping portions being used to clamp on both sides of the shaft gear assembly.

6. The shaft gear sub-assembly locking device according to claim 5, characterized in that, The clamping arm also includes a gripper, which is detachably connected to the clamping part.

7. The shaft gear sub-assembly locking device according to claim 5, characterized in that, The contour of the side of the clamping part that contacts the shaft gear assembly matches the contour of the shaft gear assembly.

8. The shaft gear assembly locking device according to any one of claims 1-3, characterized in that, The locking device for the shaft gear assembly also includes a limiting member, which is connected to the support and protrudes from the outer surface of the support. The limiting member is located on the side of one of the clamping arms away from the other clamping arm and is used to stop the clamping arm.

9. The shaft gear assembly locking device according to any one of claims 1-3, characterized in that, The shaft gear assembly locking device also includes a position detection mechanism, which is connected to the support and is used to detect the position of the clamping arm.

10. The shaft gear sub-assembly locking device according to any one of claims 1-3, characterized in that, The locking device for the shaft gear assembly also includes an elastic assist mechanism, which includes an elastic column and a fixed block. The fixed block is connected to the support, one end of the elastic column is connected to the linkage mechanism, and the other end of the elastic column is connected to the fixed block. The elastic column is in a pre-tensioned state.

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