Front cylinder assembling machine

Abstract

The utility model discloses a front cylinder assembling machine, and relates to the field of mechanical equipment. The cylinder assembling machine comprises a rack, a cylinder assembling machine top head is arranged at one end of the rack in the length direction, two sets of supporting assemblies are arranged at the upper end of the rack, the two supporting assemblies are located on the same side of the cylinder assembling machine top head and arranged in the length direction of the rack, and the upper end of the rack is slidably connected with a buckling and pressing plate in the length direction. The buckling plate is located on the sides, away from the cylinder assembling machine top, of all the supporting assemblies and slidably connected with a buckling block in the vertical direction, a buckling groove is formed in the lower end of the buckling block, the buckling plate is provided with a driving piece used for driving the buckling block to move, the lower end of the buckling plate is rotationally connected with a positioning block, and positioning teeth are arranged at the end, away from the buckling plate, of the positioning block. A fixed rack is arranged at the upper end of the rack in the length direction and located below the positioning block, and a plurality of tooth grooves matched with the positioning teeth are formed in the fixed rack in the length direction. The cylinder body clamping and positioning device has the characteristic of improving the stability when the cylinder body is clamped and positioned.

Description

Technical Field

[0001] The utility model relates to the field of mechanical equipment, in particular to a front-mounted cylinder installing machine. Background Art

[0002] At present, with the continuous advancement of industrial automation, the oil cylinder assembly equipment has become a key link in the production line. The traditional oil cylinder assembly mostly relies on manual or semi-automatic equipment, with limited efficiency and accuracy.

[0003] For the related technology above, a horizontal cylinder installing machine disclosed in a Chinese patent with the publication number CN209532596U has the following structure: a frame, on which a cylinder barrel bracket assembly, a cylinder barrel clamping assembly, a piston rod bracket assembly, a boosting device, a first driving component and a second driving component are sequentially arranged; the cylinder barrel bracket assembly includes a slide rail arranged on the frame and a cylinder barrel supporting bracket slidable along the slide rail; the cylinder barrel clamping assembly includes a first base arranged on the frame and a left clamping member and a right clamping member slidable in opposite directions along the first base; the piston rod bracket assembly includes a second base and a piston rod supporting bracket slidable along the second base, and the first driving component drives the piston rod bracket assembly to move up and down; the boosting device includes a mounting bracket and a boosting component arranged on the mounting bracket, and the second driving component drives the boosting device to move up and down.

[0004] In view of the above related technology, when assembling the cylinder barrel, the horizontal cylinder installing machine needs to place the cylinder barrel between the left and right clamping members. When clamping, the left and right clamping members approach each other to clamp and position the cylinder barrel. However, the left and right clamping members are only used to limit the lateral displacement of the cylinder barrel. When the cylinder barrel has a tendency to displace vertically, the left and right clamping members only limit the cylinder barrel by the friction force between them and the cylinder barrel, resulting in relatively low positioning stability of the cylinder barrel. Content of the Utility Model

[0005] In order to improve the stability when clamping and positioning the cylinder block, the present application provides a front-mounted cylinder installing machine.

[0006] The present application provides a front-mounted cylinder installing machine, adopting the following technical solutions:

[0007] A front-mounted cylinder loading machine includes a frame. At one end of the frame along the length direction, there is a cylinder loading machine head, and the cylinder loading machine head moves along the length direction of the frame. At the upper end of the frame, there are two groups of support components. Both support components are located on the same side of the cylinder loading machine head, and the two support components are arranged along the length direction of the frame. A clamping plate is slidably connected to the upper end of the frame along the length direction. The clamping plate is located on the side of all support components away from the cylinder loading machine head. The clamping plate is slidably connected with a clamping block in the vertical direction. At the lower end of the clamping block, there is a clamping groove, and the width of the clamping groove gradually increases from the upper end to the lower end. The clamping plate is provided with a driving member for driving the clamping block to move. At the lower end of the clamping plate, there is a rotatable positioning block. At one end of the positioning block away from the clamping plate, there are positioning teeth. Along the length direction at the upper end of the frame, there is a fixed rack. The fixed rack is located below the positioning block. Along the length direction, the fixed rack is provided with a number of tooth grooves adapted to the positioning teeth. When the positioning block rotates, it drives the positioning teeth to approach or move away from the fixed rack.

[0008] By adopting the above technical solution, the piston rod is placed on the upper end of the support component close to the cylinder loading machine head, and the cylinder block is placed on the upper end of the support component away from the cylinder loading machine head. The clamping plate moves along the length direction of the frame so that the cylinder block is located below the clamping plate. Rotate the positioning block so that the positioning block drives the positioning teeth to approach the fixed rack. The positioning teeth are located in the tooth grooves and fit with the inner wall of the tooth grooves, restricting the movement of the clamping plate. The driving member drives the clamping block to press down so that the cylinder block enters the clamping groove. The clamping block cooperates with the support component to clamp the cylinder block. The cylinder loading machine head pushes the piston rod to assist in assembling the piston rod and the cylinder block. The clamping block limits the lateral displacement of the cylinder block through the clamping groove, and cooperates with the support component to limit the vertical displacement of the cylinder block, which is beneficial to improving the positioning stability of the cylinder block.

[0009] Optionally, the support component includes a support plate. The support plate is located on the upper end surface of the frame. The support plate is provided with a number of mounting bolts. The mounting bolts pass through the support plate and are threadedly connected to the frame. At the upper end of the support plate, there are two groups of support blocks. The two groups of support blocks are arranged along the length direction of the support plate. At the upper end of the support block, there is a support groove.

[0010] By adopting the above technical solution, the mounting bolts fix the support plate to the frame. The position of the support plate can be moved by disassembling the mounting bolts. When loading the cylinder, the cylinder block or the piston rod is placed in the support groove. The support block limits the cylinder block or the piston rod through the support groove, which is beneficial to improving the convenience of using the cylinder loading machine.

[0011] Optionally, positioning plates are provided on both sides of the support block. The positioning plates are fixedly connected to the support plate. And on the side of the positioning plate close to the support block, there is a positioning groove opened vertically. The side of the support block is located in the positioning groove and is slidably connected to the positioning plate along the length direction of the positioning groove. A number of positioning bolts are provided on the side surface of the positioning plate. The positioning bolts pass through the positioning plate and abut against the support block.

[0012] By adopting the above technical solution, the positioning plate limits and guides the support block through the positioning groove, so that the support block moves along the length direction of the positioning groove. By adjusting the position of the positioning bolt, the position of the cylinder body can be fine-tuned.

[0013] Optionally, a push rod is provided at the lower end of the support block, the push rod passes through the support plate and is connected to the frame, a limiting groove is opened at the upper end of the push rod along the length direction of the support block, and the lower end of the support block is located in the limiting groove and fits the inner wall of the limiting groove.

[0014] By adopting the above technical solution, the push rod limits the movement of the support block along the length direction of the frame through the limit groove, which is helpful to assist the positioning plate to fix the support block and improve the supporting stability of the support plate.

[0015] Optionally, the driving member includes a locking plate, a handwheel and a screw, the locking plate is located at the upper end of the buckling plate and is fixedly connected to the buckling plate, the handwheel is located at the upper end of the locking plate and is rotatably connected to the locking plate, the screw passes through the handwheel vertically and is threadedly connected to the handwheel, and the lower end of the screw is fixedly connected to the buckling block.

[0016] By adopting the above technical solution, when the hand wheel rotates under the support of the locking plate, the buckling block is driven downward or upward by the screw rod to fix cylinder bodies of different diameters, which is beneficial to improving the convenience of using the cylinder installation machine.

[0017] Optionally, a cylinder 1 is provided on the side of the cylinder loader head facing away from the frame, the output end of the cylinder 1 is fixedly connected to the cylinder loader head, and a connecting piece is provided at the lower end of the cylinder, which is used to connect to the frame and support the cylinder 1.

[0018] By adopting the above technical solution, the cylinder 1 pushes the top head of the cylinder assembling machine to move along the length direction of the frame, and the cylinder 1 generates thrust to assist in assembling the oil cylinder, which saves labor costs and is conducive to improving the convenience of assembling the cylinder body.

[0019] Optionally, a slide rail is provided at one end of the frame close to the top of the cylinder loader, the slide rail is arranged vertically, and the connecting piece is slidably connected to the slide rail along the length direction of the slide rail.

[0020] By adopting the above technical solution, the slide rail guides the connecting piece, so that the connecting piece drives the top head of the cylinder assembling machine to move vertically, which is convenient for assembling different types of cylinder bodies and is conducive to improving the versatility of the cylinder assembling machine.

[0021] Optionally, the frame is fixedly provided with a second cylinder, which is arranged vertically and directly below the connecting piece, and an output end of the second cylinder is fixedly connected to the connecting piece.

[0022] By adopting the above technical solution, when the cylinder 2 is working, it drives the connecting piece to move vertically, and then drives the top head of the cylinder loader and the cylinder 1 to move through the connecting piece, which is more convenient when adjusting the position of the top head of the cylinder loader.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Place the piston rod at the upper end of the support assembly close to the cylinder head of the cylinder loading machine, and place the cylinder block at the upper end of the support assembly far from the cylinder head of the cylinder loading machine. Move the clamping plate along the length direction of the frame so that the cylinder block is located below the clamping plate. Rotate the positioning block to drive the positioning teeth to move downward, and the positioning teeth are engaged into the tooth grooves of the fixed rack to limit the movement of the clamping plate. Press down the clamping block so that the cylinder block enters the clamping groove and cooperates with the support block to clamp the cylinder block. The cylinder head of the cylinder loading machine pushes the piston rod to assist in the assembly of the piston rod and the cylinder block. The clamping block limits the lateral displacement of the cylinder block through the clamping groove, and cooperates with the support assembly to limit the vertical displacement of the cylinder block, thereby facilitating the improvement of the positioning stability of the cylinder block;

[0025] 2. Fix the support plate to the frame with installation bolts. The position of the support plate can be moved by removing the installation bolts. When loading the cylinder, place the cylinder block or the piston rod in the support groove, and the support block limits the cylinder block or the piston rod through the support groove, which is beneficial to improving the convenience of using the cylinder loading machine;

[0026] 3. The positioning plate limits and guides the support block through the positioning groove, so that the support block moves along the length direction of the positioning groove. By adjusting the position of the positioning bolt, it is convenient to finely adjust the position of the cylinder block. Description of the Drawings

[0027] Figure 1 is an overall structural schematic diagram of a kind of

[0028] Figure 2 is a schematic diagram of the structure of the support assembly intended to highlight

[0029] Figure 3 is a schematic diagram of the structure of the clamping plate intended to highlight

[0030] Description of the Reference Numerals in the Drawings: 1. Frame; 2. Cylinder head of the cylinder loading machine; 21. Cylinder 1; 22. Connector; 23. Slide rail; 24. Cylinder 2; 3. Support assembly; 31. Support plate; 311. Installation bolt; 32. Support block; 322. Support groove; 33. Positioning plate; 331. Positioning bolt; 332. Positioning groove; 34. Ejector rod; 341. Limit groove; 4. Locking guide post; 5. Clamping plate; 51. Clamping block; 511. Clamping groove; 52. Driving part; 521. Locking plate; 522. Handwheel; 523. Screw rod; 53. Positioning block; 531. Positioning tooth; 54. Locking handle; 6. Fixed rack; 61. Tooth groove. Detailed Embodiments

[0031] The following further describes the present application in detail with reference to all the drawings.

[0032] The embodiment of the present application discloses a front cylinder loading machine. Example

[0033] Reference Figure 1 A front cylinder loading machine includes a frame 1, and a cylinder loading machine head 2 is provided at one end of the frame 1 in the extension direction. The cylinder loading machine head 2 is arranged along the length direction of the frame 1. The frame 1 is provided with a cylinder 21, and the cylinder 21 is located on the side of the cylinder loading machine head 2 away from the frame 1. The output end of the cylinder 21 is fixedly connected to the cylinder loading machine head 2. When the cylinder 21 is working, it drives the head to move along the length direction of the frame 1. A connecting piece 22 is fixedly provided at the lower end of the cylinder 21.

[0034] Reference Figure 1 , a slide rail 23 is provided at one end of the frame 1 near the top head 2 of the cylinder loader. The slide rail 23 is arranged vertically. The connecting member 22 is slidably connected to the slide rail 23 along the length direction of the slide rail 23. The slide rail 23 guides the connecting member 22 so that the connecting member 22 drives the top head 2 of the cylinder loader to move vertically. The frame 1 is fixed with a cylinder 24. The cylinder 24 is arranged vertically and is directly below the connecting member 22. The output end of the cylinder 24 is fixedly connected to the connecting member 22. When the cylinder 24 is working, it drives the connecting member 22 and the top head 2 of the cylinder loader fixed thereto and the cylinder 1 21 to move vertically along the slide rail 23 to adjust the height of the top head 2 of the cylinder loader. Two sets of support assemblies 3 are provided at the upper end of the frame 1. The two support assemblies 3 are both located on the same side of the top head 2 of the cylinder loader, and the two support assemblies 3 are arranged along the length direction of the frame 1.

[0035] Reference Figure 1 and Figure 2 The support assembly 3 includes a support plate 31, which is located at the upper end of the frame 1 and fits with the upper end surface of the frame 1. The support plate 31 is provided with a plurality of mounting bolts 311, and the plurality of mounting bolts 311 all pass through the support plate 31 and are threadedly connected to the frame 1. The frame 1 limits the support plate 31 by the mounting bolts 311. When the position of the support plate 31 needs to be adjusted, the mounting bolts 311 can be directly removed. Two groups of support blocks 32 are provided at the upper end of the support plate 31. The two groups of support blocks 32 are parallel to each other and arranged along the length direction of the support plate 31. A support groove 322 is opened at the upper end of the support block 32. The width of the support groove 322 gradually decreases from top to bottom. The piston rod is placed on the upper end of the support component 3 close to the top head 2 of the cylinder loader, and the cylinder body is placed on the upper end of the support component 3 away from the top head 2 of the cylinder loader. When placing the piston rod or the cylinder body, the piston rod or the cylinder body is placed in the support groove 322 of the support plate 31. After the piston rod or the cylinder body contacts the inner wall of the support groove 322, the support plate 31 supports the piston rod or the cylinder body, and the support plate 31 limits the displacement of the piston rod or the cylinder body along the width direction of the support component 3 through the support groove 322, which is conducive to improving the convenience of using the cylinder loader.

[0036] Reference Figure 2, positioning plates 33 are provided on both sides of the support block 32 in the width direction. The positioning plates 33 are fixedly connected to the support plate 31. And a positioning groove 332 is vertically formed on one side of the positioning plate 33 close to the support block 32. The side of the support block 32 is located in the positioning groove 332 and is slidably connected to the positioning plate 33 along the length direction of the positioning groove 332. There is an activity gap between the side surface of the support block 32 in the width direction and the bottom surface of the positioning groove 332. A positioning bolt 331 is provided on the side of the positioning plate 33 facing away from the support block 32. The positioning bolt 331 is arranged horizontally, and the positioning bolt 331 passes through the positioning plate 33 and abuts against the support block 32. By loosening the positioning bolt 331, the support plate 31 can move up and down along the limit groove 341 of the positioning plate 33. After adjusting to the position, tightening the positioning bolt 331 can complete the fixation. Rotating the positioning bolts 331 on both sides of the support plate 31 makes all the positioning bolts 331 move in the same direction along the length direction, thereby facilitating the adjustment of the position of the support block 32 along the width direction of the support plate 31.

[0037] Refer to Figure 1 and Figure 2 , a ejector rod 34 is provided at the lower end of the support block 32. The ejector rod 34 passes through the support plate 31 and is connected to the frame 1. A limit groove 341 is formed in the upper end of the ejector rod 34 along the length direction of the support block 32. The lower end of the support block 32 is located in the limit groove 341 and fits with the inner wall of the limit groove 341. The ejector rod 34 limits the support block 32 through the limit groove 341, thereby restricting the displacement of the support block 32 along the length direction of the frame 1, which is beneficial to improving the support stability of the support block 32.

[0038] Refer to Figure 1 and Figure 3 , locking guide posts 4 are fixedly provided on both sides of the upper end of the frame 1 along the length direction. The locking guide posts 4 are arranged along the length direction of the frame 1. The frame 1 is also provided with a buckle pressing plate 5. Both locking guide posts 4 pass through the buckle pressing plate 5 and are slidably connected to the buckle pressing plate 5. The locking guide posts 4 guide the buckle pressing plate 5, so that the buckle pressing plate 5 moves along the length direction of the locking guide posts 4. A positioning block 53 is rotatably connected to the lower end of the buckle pressing plate 5. When the buckle pressing plate 5 moves, it drives the positioning block 53 to move. A positioning tooth 531 is fixedly connected to one end of the positioning block 53 away from the buckle pressing plate 5. A fixed rack 6 is provided on the upper end of the frame 1 along the length direction. The fixed rack 6 is located below the positioning block 53. When the buckle pressing plate 5 moves along the length direction of the locking guide posts 4, it drives the positioning block 53 to move along the length direction of the fixed rack 6. A plurality of tooth grooves 61 adapted to the positioning teeth 531 are formed in the fixed rack 6 along the length direction. When the positioning block 53 rotates, it drives the positioning teeth 531 to approach or move away from the tooth grooves 61.

[0039] Refer to Figure 1 and Figure 3, when the positioning teeth 531 are located in the tooth grooves 61, they are in contact with the inner wall of the tooth grooves 61. At this time, the displacement of the clamping plate 5 along the length direction of the locking guide post 4 is restricted by the positioning teeth 531 and the positioning block 53, thereby positioning the clamping plate 5. To improve the positioning stability of the clamping plate 5, positioning blocks 53, positioning teeth 531 and corresponding fixed racks 6 are provided on both sides of the clamping plate 5 in the width direction. The clamping plate 5 is provided with a locking handle 54, and the locking handle 54 is connected to the positioning blocks 53 on both sides. When the locking handle 54 rotates, it drives the positioning blocks 53 on both sides to rotate in the same direction at the same time. Then, the positioning teeth 531 on both sides of the positioning plate 33 are inserted into the fixed racks 6 at the same time to limit the positioning plate 33, improving the stability of the limit.

[0040] Refer to Figure 1 and Figure 3 , a clamping block 51 is slidably connected to the clamping plate 5 in the vertical direction. A clamping groove 511 is formed at the lower end of the clamping block 51, and the width of the clamping groove 511 gradually increases from top to bottom. A driving member 52 is provided at the upper end of the clamping plate 5. The driving member 52 includes a locking plate 521, a handwheel 522 and a screw rod 523. The locking plate 521 is located at the upper end of the clamping plate 5 and is fixedly connected to the clamping plate 5. When the clamping plate 5 moves, it drives the locking plate 521 to move. The handwheel 522 is located at the upper end of the locking plate 521, and the locking plate 521 supports the handwheel 522 and is rotatably connected to the handwheel 522. The screw rod 523 passes through the handwheel 522 in the vertical direction and is threadedly connected to the handwheel 522, and the lower end of the screw rod 523 is fixedly connected to the clamping block 51. Under the support of the locking plate 521, when the handwheel 522 rotates, it drives the clamping block 51 to press down or move up through the screw rod 523, which is used to fix cylinders with different diameters and is beneficial to improving the convenience of using the cylinder loading machine.

[0041] The implementation principle of the embodiment of the present application is as follows: Place the piston rod in the support groove 322 of the support block 32 at the upper end of the support assembly 3 close to the cylinder loading machine head 2, and place the cylinder in the support groove 322 of the support block 32 at the upper end of the support assembly 3 far from the cylinder loading machine head 2. By adjusting the positioning bolt 331, the position of the support block 32 is finely adjusted to make the cylinder and the piston rod coaxial. Move the clamping plate 5 along the length direction of the locking guide post 4 to above the cylinder, rotate the locking handle 54 to drive the positioning block 53 to rotate, and insert the positioning teeth 531 into the tooth grooves 61 of the fixed rack 6 to restrict the movement of the clamping plate 5. Rotate the handwheel 522 at the upper end of the clamping plate 5 to press down the clamping block 51, and the clamping block 51 cooperates with the support block 32 to limit the cylinder. Start the first cylinder 21 to push the cylinder loading machine head 2, and the cylinder loading machine head 2 pushes the piston rod to approach the cylinder along the length direction of the frame 1 to complete the assembly of the oil cylinder. The support assembly 3 and the clamping plate 5 cooperate to fix the cylinder, restricting the displacement of the cylinder both vertically and horizontally and improving the stability of clamping the cylinder.

[0042] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A front-mounted cylinder installation machine, which comprises a frame (1), and is characterized in that: The frame (1) is provided with a cylinder loading machine head (2) at one end in the extension direction, and the cylinder loading machine head (2) moves along the length direction of the frame (1). The upper end of the frame (1) is provided with two groups of support components (3), and the two support components (3) are both located on the same side of the cylinder loading machine head (2), and the two support components (3) are arranged along the length direction of the frame (1). The upper end of the frame (1) is slidably connected with a buckling plate (5) along the length direction, and the buckling plate (5) is located on the side of all the support components (3) away from the cylinder loading machine head (2). The buckling plate (5) is vertically slidably connected with a buckling block (51), and a buckling groove (511) is provided at the lower end of the buckling block (51). The width of the pressing groove (511) gradually increases from the upper end to the lower end. The pressing plate (5) is provided with a driving member (52) for driving the pressing block (51) to move. The lower end of the pressing plate (5) is rotatably connected with a positioning block (53). The positioning block (53) is provided with a positioning tooth (531) at one end away from the pressing plate (5). The upper end of the frame (1) is provided with a fixed rack (6) along the length direction. The fixed rack (6) is located below the positioning block (53). The fixed rack (6) is provided with a plurality of tooth grooves (61) adapted to the positioning tooth (531) along the length direction. When the positioning block (53) rotates, the positioning tooth (531) is driven to approach or move away from the fixed rack (6).

2. The front cylinder mounting machine according to claim 1, characterized in that: The support assembly (3) comprises a support plate (31), the support plate (31) is located on the upper end surface of the frame (1), the support plate (31) is provided with a plurality of mounting bolts (311), the mounting bolts (311) pass through the support plate (31) and are threadedly connected to the frame (1), the upper end of the support plate (31) is provided with two groups of support blocks (32), the two groups of support blocks (32) are arranged along the length direction of the support plate (31), and the upper end of the support block (32) is provided with a support groove (322).

3. The front cylinder mounting machine according to claim 2, characterized in that: Positioning plates (33) are provided on both sides of the support block (32), the positioning plates (33) are fixedly connected to the support plate (31), and a positioning groove (332) is vertically provided on one side of the positioning plate (33) close to the support block (32), the side edge of the support block (32) is located in the positioning groove (332) and is slidably connected to the positioning plate (33) along the length direction of the positioning groove (332), and a plurality of positioning bolts (331) are provided on the side of the positioning plate (33), and the positioning bolts (331) pass through the positioning plate (33) and abut against the support block (32).

4. The front cylinder mounting machine according to claim 2, characterized in that: The lower end of the support block (32) is provided with a push rod (34), the push rod (34) passes through the support plate (31) and is connected to the frame (1), the upper end of the push rod (34) is provided with a limiting groove (341) along the length direction of the support block (32), and the lower end of the support block (32) is located in the limiting groove (341) and is in contact with the inner wall of the limiting groove (341).

5. The front cylinder mounting machine according to claim 1, characterized in that: The driving member (52) includes a locking plate (521), a handwheel (522) and a screw rod (523). The locking plate (521) is located at the upper end of the clamping plate (5) and is fixedly connected to the clamping plate (5). The handwheel (522) is located at the upper end of the locking plate (521) and is rotatably connected to the locking plate (521). The screw rod (523) passes vertically through the handwheel (522) and is threadedly connected to the handwheel (522), and the lower end of the screw rod (523) is fixedly connected to the clamping block (51).

6. The front cylinder mounting machine according to claim 1, characterized in that: On the side of the cylinder mounting head (2) facing away from the frame (1), there is a first cylinder (21). The output end of the first cylinder (21) is fixedly connected to the cylinder mounting head (2). At the lower end of the first cylinder (21), there is a connecting member (22), and the connecting member (22) is used to connect the frame (1) and support the first cylinder (21).

7. The front cylinder mounting machine according to claim 1, characterized in that: One end of the frame (1) close to the cylinder mounting head (2) is provided with a slide rail (23). The slide rail (23) is arranged vertically, and the connecting member (22) is slidably connected to the slide rail (23) along the length direction of the slide rail (23).

8. The front cylinder mounting machine according to claim 1, characterized in that: The frame (1) is fixedly provided with a second cylinder (24). The second cylinder (24) is arranged vertically and is directly below the connecting member (22), and the output end of the second cylinder (24) is fixedly connected to the connecting member (22).

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