A clamp platform bidirectional switching device for clamp storage

Abstract

The application discloses a clamp platform bidirectional switching device for clamp storage, which comprises a clamp platform bidirectional switching device, wherein the clamp platform bidirectional switching device is installed on a clamp conveying platform, a conveying track is installed below the clamp conveying platform, a first clamp storage position is arranged on one side of the clamp platform bidirectional switching device, a second clamp storage position is arranged on the other side of the clamp platform bidirectional switching device, a first clamp platform is arranged in the first clamp storage position, and a second clamp platform is arranged on the clamp conveying platform. The application improves the production rhythm, realizes the conveying storage and switching of the vehicle clamp quickly, improves the production efficiency of the automobile industry, occupies a small space, and is convenient to install, debug and maintain.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile welding flexible production line, and particularly relates to a clamp platform bidirectional switching device for clamp storage. BACKGROUND

[0002] Multi-model flexible mixed-line welding production mode has become a development trend of welding production line to adapt to market demand. In order to realize flexible mixed-line production, generally, a clamp switching system is used to select the clamp corresponding to different vehicle models from a clamp storage, and the clamp is transported to a work station to complete switching of the corresponding clamp, so as to meet the production needs of different vehicle models. The form of clamp storage determines the switching mode of the clamp platform, and the switching mode of the clamp platform is a key link of flexible production, which determines the overall production rhythm and operation stability. At present, the forms of clamp storage are various, among which the arrangement of clamp storage positions and the switching and transportation of the clamp platform are quite different from the planar arrangement form, which determines the difference of the clamp platform switching device applied to the clamp storage.

[0003] At present, the mainstream form of clamp platform switching of clamp storage in the market mostly adopts the form of a traction trolley, and each clamp storage position is provided with a traction trolley for switching the clamp in the clamp storage position. The structure is complex, occupies a large space, and is inconvenient to install, debug and maintain. In addition, the clamp on the line body needs to be returned to the original position before the clamp to be used is switched out, which leads to poor performance of the driving mechanism of switching, waste of rhythm time, and low production efficiency.

[0004] How to solve the above problems has become a technical problem to be solved. SUMMARY

[0005] The purpose of the present application is to provide a clamp platform bidirectional switching device for clamp storage, which improves the production rhythm, can quickly realize the transportation storage and switching of vehicle clamps, improves the production efficiency of the automobile industry, occupies a small space, and is convenient to install, debug and maintain.

[0006] To achieve the above purpose, the present application adopts the following technical scheme:

[0007] The present application provides a clamp platform bidirectional switching device for clamp storage, which comprises a clamp platform bidirectional switching device, the clamp platform bidirectional switching device is installed on a clamp transportation platform, a transportation track is installed below the clamp transportation platform, a first clamp storage position is placed on one side of the clamp platform bidirectional switching device, a second clamp storage position is placed on the other side of the clamp platform bidirectional switching device, a first clamp platform is placed in the first clamp storage position, and a second clamp platform is placed on the clamp transportation platform.

[0008] Further, the clamp platform bidirectional switching device comprises a driving assembly and a docking assembly, the docking assembly is installed above the driving assembly, and the docking assembly is used for realizing the connection of the driving assembly and the first clamp platform and the connection of the driving assembly and the second clamp platform, wherein the first clamp platform is provided with a first hook, the second clamp platform is provided with a second hook, the first hook and the second hook are connected with the docking assembly, and the driving assembly is installed on the clamp conveying platform and is used for switching the second clamp platform and the first clamp platform.

[0009] Further, the driving assembly comprises a first dust cover, a first sliding rail, a first sliding rail connecting block, a second dust cover, a rack, a gear shaft, a third dust cover, a second sliding rail, a second sliding rail connecting block, a connecting plate, a sensing block, a speed reducer motor, a first limiting block, a motor installation base plate, a second limiting block.

[0010] The speed reducer motor is installed on the motor installation base plate, the speed reducer motor is connected with the gear shaft, the gear shaft is engaged with the rack, the gear shaft is used for driving the linear motion of the gear shaft along the rack through rotation, the second dust cover is used for dust protection of the rack, the first sliding rail and the second sliding rail are installed on the clamp conveying platform, the first sliding rail connecting block is installed on the first sliding rail, the second sliding rail connecting block is installed on the second sliding rail, the first dust cover is installed above the first sliding rail and passes through the first sliding rail connecting block, the first dust cover is used for dust protection of the first sliding rail, and the third dust cover is installed above the second sliding rail and passes through the second sliding rail connecting block, and the third dust cover is used for dust protection of the second sliding rail.

[0011] Further, the motor installation base plate is installed on the first sliding rail connecting block and the second sliding rail connecting block, and the motor installation base plate can move left and right on the first sliding rail and the second sliding rail; and the connecting plate is installed on the motor installation base plate, the docking assembly is installed on the motor installation base plate, the sensing block is installed on the connecting plate and is used for sensing and determining the position of the driving assembly, the first limiting block and the second limiting block are respectively arranged at two ends of the motor installation base plate, and the first limiting block and the second limiting block are both used for protecting and limiting the position of the driving assembly to prevent the driving assembly from sliding out of the first sliding rail and the second sliding rail.

[0012] Further, the docking assembly comprises a cylinder installation seat, an integrated cylinder, a first push rod, a first cylinder joint, a first guide wheel, a first guide shaft, a first connecting block, a first hinge pin, a first movable hook, a guide connecting plate, a connecting support plate, and a docking base plate.

[0013] The docking substrate is installed on the motor installation substrate, the integrated cylinder is installed on the cylinder installation seat and passes through the cylinder installation seat, the cylinder installation seat is installed on one side of the docking substrate, the connecting support plate is installed on the other side of the docking substrate, one end of the first cylinder joint is connected to the integrated cylinder through the first push rod, and the other end of the first cylinder joint is installed on one end of the first connecting block through the first guide shaft, the other end of the first connecting block is installed on the first movable hook through the first hinge pin, and the guide connecting plate connects the cylinder installation seat and the connecting support plate, the guide connecting plate is provided with a one-word guide hole, the first guide shaft is installed on the first cylinder joint, the first guide wheel is installed on the first guide shaft, and the first guide wheel is matched with the one-word guide hole of the guide connecting plate and is used for realizing the guidance of the linear motion of the integrated cylinder.

[0014] Further, the docking assembly further comprises a first cam follower, a second hinge pin, a second movable hook, a second connecting block, a second guide shaft, a second guide wheel, a second cam follower, a second cylinder joint and a second push rod.

[0015] The first movable hook is installed on the docking substrate through the first hinge pin, the second movable hook is installed on the docking substrate through the second hinge pin, the first movable hook and the second movable hook are symmetrically installed on two sides of the docking substrate, the first movable hook rotates around the first hinge pin, the second movable hook rotates around the second hinge pin, the first cam follower is installed at the end of the first movable hook, and the second cam follower is installed at the end of the second movable hook.

[0016] Further, one end of the second cylinder joint is connected to the integrated cylinder through the second push rod, the other end of the second cylinder joint is installed on one end of the second connecting block through the second guide shaft, the other end of the second connecting block is installed on the second movable hook through the second hinge pin, the second guide shaft is installed on the second cylinder joint, the second guide wheel is installed on the second guide shaft, and the second guide wheel is matched with the one-word guide hole of the guide connecting plate and is used for realizing the guidance of the linear motion of the integrated cylinder.

[0017] Due to the adoption of the above structure, the application has the following beneficial effects:

[0018] The clamp platform bidirectional switching device of the application can move on the clamp conveying platform in two directions, can pull out or store the clamp platform from the clamp storage position in one direction, and can realize the synchronous storage and withdrawal of the clamp platform when the clamp platform is switched, thereby improving the production efficiency and production rhythm of the automobile industry and realizing the conveying, storage and switching of the vehicle clamp quickly.

[0019] Compared with the traditional traction trolley, the driving device and the docking device of the application have simple structure, low cost and high safety performance, effectively reduce the high cost required for equipment modification when the automobile is modified or replaced, occupy small space, and are convenient to install, debug and maintain.

[0020] The application will become more apparent from the following description with reference to the drawings, which are used to explain embodiments of the application. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 is a schematic diagram of the overall structure of the application;

[0023] Figure 2 is a schematic diagram of the clamp platform bidirectional switching device of the application;

[0024] Figure 3 is a schematic diagram of the driving assembly structure of the application;

[0025] Figure 4 is a schematic diagram of the docking assembly structure of the application. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings of the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, not all. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the application.

[0027] Please refer to Figures 1-4The application provides a clamp platform bidirectional switching device for clamp storage, which comprises a clamp platform bidirectional switching device 1, the clamp platform bidirectional switching device 1 is installed on a clamp conveying platform 2, a conveying track 3 is installed below the clamp conveying platform 2, a first clamp storage position 4 is arranged on one side of the clamp platform bidirectional switching device 1, a second clamp storage position 7 is arranged on the other side of the clamp platform bidirectional switching device 1, a first clamp platform 5 is arranged in the first clamp storage position 4, and a second clamp platform 6 is arranged on the clamp conveying platform 2.

[0028] Preferably, the clamp platform bidirectional switching device 1 comprises a driving assembly 100 and a docking assembly 200, the docking assembly 200 is installed above the driving assembly 100, the docking assembly 200 is used for coupling the driving assembly 100 with the first clamp platform 5 and coupling the driving assembly 100 with the second clamp platform 6, the first clamp platform 5 is provided with a first hook 501, the second clamp platform 6 is provided with a second hook 601, the first hook 501 and the second hook 601 are connected with the docking assembly 200, and the driving assembly 100 is installed on the clamp conveying platform 2 and is used for switching the second clamp platform 6 with the first clamp platform 5.

[0029] Preferably, the driving assembly 100 comprises a first dust cover 101, a first sliding rail 102, a first sliding rail connecting block 103, a second dust cover 104, a rack 105, a gear shaft 106, a third dust cover 107, a second sliding rail 108, a second sliding rail connecting block 109, a connecting plate 110, an induction block 111, a speed reducer motor 112, a first limiting block 113, a motor installation base plate 114, a second limiting block 115.

[0030] The reduction motor 112 is installed on the motor mounting base plate 114, the reduction motor 112 is connected with the gear shaft 106, the gear shaft 106 is engaged with the rack 105, the gear shaft 106 drives the straight movement of the gear shaft 106 along the rack 105 by rotating, the second dust cover 104 is used for dust protection of the rack 105, and the first sliding rail 102 and the second sliding rail 108 are installed on the clamp conveying platform 2, the first sliding rail 102 is provided with the first sliding rail connecting block 103, the second sliding rail 108 is provided with the second sliding rail connecting block 109, the first dust cover 101 is installed above the first sliding rail 102 and passes through the first sliding rail connecting block 103, the first dust cover 101 is used for dust protection of the first sliding rail 102, and the third dust cover 107 is installed above the second sliding rail 108 and passes through the second sliding rail connecting block 109, and the third dust cover 107 is used for dust protection of the second sliding rail 108.

[0031] Preferably, the motor mounting base plate 114 is installed on the first sliding rail connecting block 103 and the second sliding rail connecting block 109, the motor mounting base plate 114 can move left and right on the first sliding rail 102 and the second sliding rail 108; and the connecting plate 110 is installed on the motor mounting base plate 114, the motor mounting base plate 114 is provided with the docking assembly 200, the sensing block 111 is installed on the connecting plate 110 and is used for sensing and determining the position of the driving assembly 100, the first limiting block 113 and the second limiting block 115 are respectively arranged at two ends of the motor mounting base plate 114, and the first limiting block 113 and the second limiting block 115 are both used for protecting and limiting the position of the driving assembly 100, so as to prevent the driving assembly 100 from sliding out of the first sliding rail 102 and the second sliding rail 108. The specific action is that the reduction motor 112 drives the gear shaft 106 to rotate, the gear shaft 106 moves on the rack 105, drives the motor mounting base plate 114 to move left and right, and the related position of the motor mounting base plate 114 is determined through the sensing block 111.

[0032] Preferably, the docking assembly comprises a cylinder mounting seat 201, an integrated cylinder 202, a first push rod 203, a first cylinder joint 204, a first guide wheel 205, a first guide shaft 206, a first connecting block 207, a first hinge pin 208, a first movable hook 209, a guide connecting plate 211, a connecting support plate 212, and a docking base plate 213.

[0033] The docking substrate 213 is mounted on the motor mounting substrate 114, the integrated cylinder 202 is mounted on and passes through the cylinder mounting seat 201, the cylinder mounting seat 201 is mounted on one side of the docking substrate 213, the connecting support plate 212 is mounted on the other side of the docking substrate 213, one end of the first cylinder joint 204 is connected to the integrated cylinder 202 through the first push rod 203, and the other end of the first cylinder joint 204 is mounted on one end of the first connecting block 207 through the first guide shaft 206, the other end of the first connecting block 207 is mounted on the first movable hook 209 through the first hinge pin 208, and the guide connecting plate 211 connects the cylinder mounting seat 201 and the connecting support plate 212, the guide connecting plate 211 is provided with a one-word guide hole, the first guide shaft 206 is mounted on the first cylinder joint 204, the first guide wheel 205 is mounted on the first guide shaft 206, and the first guide wheel 205 cooperates with the one-word guide hole of the guide connecting plate 211 to guide the linear motion of the integrated cylinder 202. The first guide wheel 205 slides in the one-word guide hole, so that the extension and contraction of the first push rod 203 is accurately extended and contracted in the linear direction of the one-word guide hole, the first push rod 203 cannot shake, and the first push rod 203 is prevented from being affected by a radial force.

[0034] Preferably, the docking assembly further comprises a first cam follower 210, a second hinge pin 214, a second movable hook 215, a second connecting block 216, a second guide shaft 217, a second guide wheel 218, a second cam follower 219, a second cylinder joint 220, and a second push rod 221.

[0035] The first movable hook 209 is mounted on the docking substrate 213 through the first hinge pin 208, the second movable hook 215 is mounted on the docking substrate 213 through the second hinge pin 214, the first movable hook 209 and the second movable hook 215 are symmetrically mounted on two sides of the docking substrate 213, the first movable hook 209 rotates around the first hinge pin 208, the second movable hook 215 rotates around the second hinge pin 214, the first cam follower 210 is mounted at the end of the first movable hook 209, and the second cam follower 219 is mounted at the end of the second movable hook 215, wherein the first cam follower 210 is connected with the first hook 501, and the second cam follower 219 is connected with the second hook 601.

[0036] Preferably, one end of the second cylinder joint 220 is connected with the integrated cylinder 202 through the second push rod 221, the other end of the second cylinder joint 220 is installed at one end of the second connecting block 216 through the second guide shaft 217, the other end of the second connecting block 216 is installed on the second movable hook 215 through the second hinge pin 214, the second guide shaft 217 is installed on the second cylinder joint 220, the second guide wheel 218 is installed on the second guide shaft 217, and the second guide wheel 218 cooperates with the linear guide hole on the guide connecting plate 211 to guide the linear motion of the integrated cylinder 202. The second guide wheel 218 slides in the linear guide hole, so that the extension and contraction of the second push rod 221 is accurately guided in the linear direction of the linear guide hole, the second push rod 221 cannot shake, and the second push rod 221 is prevented from being affected by the radial force. The specific action of the docking assembly is as follows: the integrated cylinder 202 drives the second cylinder joint 220 to move forward through the second push rod 221, drives the second guide wheel 218 to slide in the linear guide hole on the guide connecting plate 211, drives the second connecting block 216 to move forward, drives the second movable hook 215 to rotate, makes the second cam follower 219 rotate and locks the second clamp platform 6 through the second hook 601, this state is the locked state of the second clamp platform 6, the second movable hook 215, the second connecting block 216 and the integrated cylinder 202 are in the locked state, at this time, the second connecting block 216 is at the dead point of the mechanism, the second connecting block 216 is stressed in the vertical direction, external force cannot open the second connecting block 216 at the dead point of the mechanism, so that the docking assembly 200 carries the second clamp platform 6 in the locked state to ensure the safety and stability of carrying the second clamp platform 6. The integrated cylinder 202 drives the first cylinder joint 204 to move backward through the first push rod 203, drives the first guide wheel 205 to slide in the linear guide hole on the guide connecting plate 211, drives the first connecting block 207 to move backward, drives the first movable hook 209 to rotate, makes the first cam follower 210 rotate and releases the first clamp platform 5 through the first hook 501, this state is the released state of the first clamp platform 5, the first movable hook 209, the first connecting block 207 and the integrated cylinder 202 are in the released state, so that the docking assembly 200 is disconnected with the first clamp platform 5, and the first clamp platform 5 no longer moves with the docking assembly 200.

[0037] In specific use of the present application, the clamp platform bidirectional switching device 1 is installed on the clamp conveying platform 2. When it is needed to switch the clamp platform, the clamp conveying platform 2 runs to the side of the first clamp platform 5 to be switched, the first push rod 203 of the integrated cylinder 202 of the docking assembly 200 is extended, so that the first cam follower 210 is rotated into the first hook 501 of the first clamp platform 5, then the clamp platform bidirectional switching device 1 of the present application moves to the right to drag the first clamp platform 5 to be switched out of the first clamp storage position 4, the second push rod 221 of the integrated cylinder 202 of the docking assembly 200 is extended, so that the second cam follower 219 on the second movable hook 215 is rotated into the second hook 601 of the second clamp platform 6, then the clamp platform bidirectional switching device 1 moves to the right to convey the second clamp platform 6 not needed to be used to the second clamp storage position 7, after the second clamp platform 6 is stored in place, the second push rod 221 of the integrated cylinder 202 of the docking assembly 200 is retracted, so that the second cam follower 219 on the second movable hook 215 is rotated and leaves the second hook 601 of the second clamp platform 6, finally the clamp conveying platform 2 conveys the first clamp platform 5 to the process station along the conveying track 3, and the switching of the first clamp platform 5 and the second clamp platform 6 is completed. The present application improves the production rhythm, can quickly realize the conveying, storage and switching of the vehicle clamp, improves the production efficiency of the automobile industry, occupies small space, and is convenient to install, debug and maintain.

[0038] The preferred embodiments of the present application are described above. It should be understood that the present application is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in the ordinary way in the art; any person skilled in the art can make many possible changes and modifications to the technical solutions of the present application, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solutions of the present application, which does not affect the essential content of the present application. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the content of the technical solutions of the present application, still belongs to the scope of protection of the technical solutions of the present application.

Claims

1. A bidirectional switching device for a fixture platform for fixture storage, comprising a bidirectional switching device (1) for a fixture platform, wherein the bidirectional switching device (1) is mounted on a fixture conveying platform (2), and a conveying track (3) is mounted below the fixture conveying platform (2), characterized in that: The clamping platform bidirectional switching device (1) has a first clamping slot (4) on one side and a second clamping slot (7) on the other side. The first clamping slot (4) contains a first clamping platform (5), and the clamping conveying platform (2) contains a second clamping platform (6). The clamping platform bidirectional switching device (1) includes a drive assembly (100) and a docking assembly (200). The first clamping platform (5) is provided with a first hook (501), and the second clamping platform (6) is provided with a second hook (601). The drive assembly (100) includes a motor mounting base plate (114), and the docking assembly (200) includes a cylinder mounting seat (201), an integrated cylinder (202), a first push rod (203), a first cylinder connector (204), a first guide wheel (205), a first guide shaft (206), a first connecting block (207), a first hinge pin (208), a first movable hook (209), a guide connecting plate (211), a connecting support plate (212), and a docking base plate (213). The docking base plate (213) is mounted on the motor mounting base plate (114). The integrated cylinder (202) is mounted on the cylinder mounting seat (201) and passes through the cylinder mounting seat (201). The cylinder mounting seat (201) is mounted on one side of the docking base plate (213), and the connecting support plate (212) is mounted on the other side of the docking base plate (213). One end of the first cylinder connector (204) is connected to the integrated cylinder (202) through the first push rod (203), and the other end of the first cylinder connector (204) is mounted on one end of the first connecting block (207) through the first guide shaft (206). The other end of the first connecting block (207) is installed on the first movable hook (209) through the first hinge pin (208), and the guide connecting plate (211) connects the cylinder mounting seat (201) and the connecting support plate (212). The guide connecting plate (211) is provided with a straight guide hole. The first guide shaft (206) is installed on the first cylinder connector (204). The first guide wheel (205) is installed on the first guide shaft (206). The first guide wheel (205) cooperates with the straight guide hole on the guide connecting plate (211) to guide the linear movement of the integrated cylinder (202). The docking assembly also includes a first cam follower (210), a second hinge pin (214), a second movable hook (215), a second connecting block (216), a second guide shaft (217), a second guide wheel (218), a second cam follower (219), a second cylinder connector (220), and a second push rod (221). The first movable hook (209) is mounted on the docking base plate (213) via the first hinge pin (208), and the second movable hook (215) is mounted on the docking base plate (213) via the second hinge pin (214). The first movable hook (209) and the second movable hook (215) are symmetrically mounted on both sides of the docking base plate (213). The first movable hook (209) rotates around the first hinge pin (208), and the second movable hook (215) rotates around the second hinge pin (214). The first cam follower (210) is mounted at the end of the first movable hook (209), and the second cam follower (219) is mounted at the end of the second movable hook (215). The first cam follower (210) is connected to the first hook (501), and the second cam follower (219) is connected to the second hook (601).

2. The bidirectional switching device for a fixture platform for fixture storage as described in claim 1, characterized in that: The docking component (200) is mounted above the drive component (100) and is used to connect the drive component (100) to the first clamping platform (5) and the drive component (100) to the second clamping platform (6). The first hook (501) and the second hook (601) are both connected to the docking component (200). The drive component (100) is mounted on the clamping conveying platform (2) and is used to switch between the second clamping platform (6) and the first clamping platform (5).

3. A bidirectional switching device for a fixture platform for fixture storage as described in claim 2, characterized in that: The drive assembly (100) includes a first dust cover (101), a first slide rail (102), a first slide rail connecting block (103), a second dust cover (104), a rack (105), a gear shaft (106), a third dust cover (107), a second slide rail (108), a second slide rail connecting block (109), a connecting plate (110), a sensing block (111), a geared motor (112), a first limiting block (113), and a second limiting block (115). The geared motor (112) is mounted on the motor mounting base plate (114). The geared motor (112) is connected to the gear shaft (106). The gear shaft (106) meshes with the rack (105). The gear shaft (106) rotates to drive the gear shaft (106) to move linearly along the rack (105). The second dust cover (104) is used for dust protection of the rack (105). The first slide rail (102) and the second slide rail (108) are mounted on the clamp conveying platform (2). The first slide rail (102) The first slide rail connecting block (103) is installed on the first slide rail (102), and the second slide rail connecting block (109) is installed on the second slide rail (108). The first dust cover (101) is installed above the first slide rail (102) and passes through the first slide rail connecting block (103). The first dust cover (101) is used for dust protection of the first slide rail (102). The third dust cover (107) is installed above the second slide rail (108) and passes through the second slide rail connecting block (109). The third dust cover (107) is used for dust protection of the second slide rail (108).

4. A bidirectional switching device for a fixture platform for fixture storage as described in claim 3, characterized in that: The motor mounting base plate (114) is mounted on the first slide rail connecting block (103) and the second slide rail connecting block (109). The motor mounting base plate (114) can move left and right on the first slide rail (102) and the second slide rail (108). The connecting plate (110) is mounted on the motor mounting base plate (114). The docking component (200) is mounted on the motor mounting base plate (114). The sensing block (111) is mounted on the connecting plate (110) and the sensing block (111) is used to sense and determine the position of the drive component (100). The first limiting block (113) and the second limiting block (115) are respectively disposed at both ends of the motor mounting base plate (114). The first limiting block (113) and the second limiting block (115) are both used to protect and limit the position of the drive component (100) and prevent the drive component (100) from sliding out of the first slide rail (102) and the second slide rail (108).

5. A bidirectional switching device for a fixture platform for fixture storage as described in claim 4, characterized in that: One end of the second cylinder connector (220) is connected to the integrated cylinder (202) via the second push rod (221). The other end of the second cylinder connector (220) is mounted on one end of the second connecting block (216) via the second guide shaft (217). The other end of the second connecting block (216) is mounted on the second movable hook (215) via the second hinge pin (214). The second guide shaft (217) is mounted on the second cylinder connector (220). The second guide wheel (218) is mounted on the second guide shaft (217). The second guide wheel (218) cooperates with the guide hole on the guide connecting plate (211) to guide the linear movement of the integrated cylinder (202).

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