A transport device for electromechanical engineering equipment

Abstract

This utility model belongs to the technical field of transportation devices, specifically a transportation device for electromechanical engineering equipment. It includes a main body of the transportation device and protective mechanisms located on the front and rear sides of the main body. The main body includes a storage box. The protective mechanisms include two fixed plates, each with a pull rod fixedly connected to the center of its opposite side. Each pull rod has a fixed stop fixedly connected to its center, and protective airbags are fixedly connected to the opposing sides of the two fixed plates. This utility model controls the movement of the fixed plates on both sides backwards via the pull rods. When the equipment enters the storage box, fixed springs control the protective airbags on both sides to contact the front and rear sides of the equipment. A high-pressure air pump inflates the protective airbags, providing flexible protection for the front and rear sides of the equipment. This solves the problem of damage caused by external forces when the transportation device is mechanically fixed using clamps.

Description

Technical Field

[0001] This utility model belongs to the field of transportation device technology, specifically a transportation device for electromechanical engineering equipment. Background Technology

[0002] Steel structures are structures made of steel materials and are one of the main types of building structures. The structure is mainly composed of steel beams, steel columns, steel trusses and other components made of steel sections and steel plates. Rust removal and prevention processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing are used. The components or parts are usually connected by welds, bolts or rivets. Due to its light weight and simple construction, it is widely used in large factories, stadiums, super high-rise buildings, bridges and other fields.

[0003] In the prior art, a transport device for electromechanical engineering, with publication number CN218892572U, uses a drive assembly to move the equipment placed on a first placement plate by lifting the lifting assembly, eliminating the need for manual handling of the equipment into the storage box. The lifting assembly also limits the clamping assembly, thus eliminating the need for manual clamping and adjustment. However, the following problems still exist:

[0004] The aforementioned transport device uses a drive assembly to drive a lifting assembly to move the equipment placed on the first placement plate, thus completing the transport of the equipment. However, during transport, the equipment is mechanically fixed by clamps, and external forces can cause friction and collision between the equipment and the clamps, resulting in some damage. Furthermore, the process of moving the equipment to the lifting platform requires a significant amount of manpower.

[0005] Therefore, a transportation device for electromechanical engineering equipment is proposed to address the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies and solve the problems of mechanical fixation by clamps causing damage due to external forces and the high manpower consumption during equipment transport to the lifting platform, a new equipment transport device for electromechanical engineering is proposed.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a transport device for electromechanical engineering equipment, comprising a transport device body, protective mechanisms located on the front and rear sides of the transport device body, wherein the transport device body includes a storage box;

[0010] The protective mechanism includes two fixed plates. A pull rod is fixedly connected to the middle of the back side of each of the two fixed plates. A fixed stop block is fixedly connected to the middle of each of the two pull rods. A protective airbag is fixedly connected to the facing side of each of the two fixed plates. An air supply pipe is fixedly connected to the back side of each of the two protective airbags. A connecting pipe is fixedly connected to the back side of each of the two air supply pipes. A high-pressure air pump is fixedly connected to the bottom of each of the two connecting pipes. A dustproof net is fixedly connected to the air outlet of each of the high-pressure air pumps.

[0011] Preferably, each of the two fixed blocks is connected to a fixed spring on its opposite side, and each fixed spring is located on the outer wall of the pull rod. The fixed blocks are elastically connected to the storage box through the fixed springs, and the two pull rods are slidably connected to the front and rear sides of the storage box, respectively.

[0012] Preferably, a handle is fixedly connected to the left side of the storage box, and support frames are provided on both the front and rear sides of the bottom of the storage box, with guide wheels fixedly connected to the left and right sides of each support frame.

[0013] Preferably, the bottom of the main body of the transport device is provided with an anti-vibration mechanism, which includes a plurality of damping springs. The plurality of damping springs are disposed between the support frame and the storage box. The storage box is elastically connected to the support frame through the damping springs. A first magnet is fixedly connected to the left and right sides of the top of each support frame. A second magnet is disposed on the top of each first magnet. The first magnet and the second magnet are magnetically repelled. A guide rod is fixedly connected to the top of each second magnet. The guide rod is slidably connected to the support frame.

[0014] Preferably, the inner bottom of each storage box is provided with a clamping mechanism. The clamping mechanism includes a clamping base, which is movably connected to the bottom of the storage box. Supporting slide rods are fixedly connected to the front, back, left, and right sides of the top of the clamping base. A sliding sleeve block is slidably connected to the outer wall of each supporting slide rod, and a clamping plate is fixedly connected to the top of each sliding sleeve block.

[0015] Preferably, a support screw is movably connected to the center of the bottom of the clamping base. The bottom of the support screw is fixedly connected to the output end of the first motor. A screw sleeve block is threaded onto the outside of the support screw. Movable rods are movably connected to the front, back, left, and right sides of the screw sleeve block. A screw sleeve block is movably connected to one end of each movable rod. A screw sleeve block is movably connected to the other end of each movable rod.

[0016] Preferably, the storage box is provided with a first lifting mechanism on both the left and right sides. The first lifting mechanism includes two first guide slides. The two first guide slides are fixedly connected to the left and right sides of the inner wall of the storage box. A first movable sleeve is slidably connected to the outside of each first guide slide. The two first movable sleeves are fixedly connected to the clamping base. A winding rope is fixedly connected to the top of the two first movable sleeves on the opposite side. A winding roller is wound around the top of the two winding ropes.

[0017] Preferably, the front of the left take-up roller is fixedly connected to the output end of the second motor, and a fixed shaft is fixedly connected to the rear of both take-up rollers. A first sprocket is fixedly connected to the rear of the left fixed shaft, and a second sprocket is fixedly connected to the rear of the right fixed shaft. The first sprocket is driven by the second sprocket through a transmission chain.

[0018] Preferably, the front outer wall of the storage box is provided with a second lifting mechanism. The second lifting mechanism includes two fixed frames, which are respectively fixedly connected to the left and right sides of the front outer wall of the storage box. A second guide slide rod is fixedly connected to the opposite side inside each fixed frame. A second movable sleeve block is slidably connected to the outside of each second guide slide rod. A lifting plate is fixedly connected to the front of each second movable sleeve block. A reinforcing rib is fixedly connected to the bottom of each lifting plate.

[0019] Preferably, each of the two second movable sleeves is fixedly connected to a connecting plate on its opposite side, and the bottom of each connecting plate is fixedly connected to the output end of the first hydraulic cylinder.

[0020] (III) Beneficial Effects

[0021] Compared with the prior art, this utility model provides a transportation device for electromechanical engineering, which has the following beneficial effects:

[0022] 1. This utility model uses a pull rod to control the fixed plates on both sides to move backward. When the equipment enters the storage box, the fixed spring controls the protective airbags on both sides to contact the front and rear sides of the equipment. The high-pressure air pump inflates the protective airbags, thus achieving flexible protection for the front and rear sides of the equipment. This solves the problem that the mechanical fixation of the transport device by clamps can cause certain damage due to external forces.

[0023] 2. This utility model uses a first hydraulic cylinder to control the lifting plate to move upward, thereby achieving the lifting of the lifting plate and solving the problem of high manpower consumption during the process of moving equipment to the lifting platform.

[0024] 3. This utility model controls the two winding rollers on both sides to rotate together through a second motor, and uses the winding rope to wind up, so that the clamping base moves upward, thereby lifting the clamping base and solving the problem of the equipment entering the storage box.

[0025] 4. This utility model uses a first motor to control the lead screw sleeve block to move downward, and uses a movable rod to control the clamping plates on all four sides to close, thereby fixing the equipment base and solving the problem of fixing the equipment during transportation.

[0026] 5. When this utility model is subjected to vibration, the storage box moves downward, and the second magnet moves downward through the guide rod. The first magnet and the second magnet generate a repulsive force, and the damping spring generates an elastic force by squeezing. This realizes the cancellation of the vibration force generated by the vibration through repulsive force and elastic force, and solves the vibration reduction problem during equipment transportation. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0028] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0029] Figure 2 This is a three-dimensional structural diagram of the first lifting mechanism of this utility model;

[0030] Figure 3 This is a three-dimensional structural diagram of the clamping mechanism of this utility model;

[0031] Figure 4 This is a three-dimensional structural diagram of the protective mechanism of this utility model;

[0032] Figure 5 This is a three-dimensional structural diagram of the second lifting mechanism of this utility model;

[0033] Figure 6 This is a utility model Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0034] In the diagram: 1. Main body of the transport device; 101. Storage box; 102. Handle; 103. Support frame; 104. Guide wheel;

[0035] 2. Seismic resistance mechanism; 201. Damping spring; 202. First magnet block; 203. Second magnet block; 204. Guide rod;

[0036] 3. Clamping mechanism; 301. Clamping base; 302. Support slide rod; 303. Sliding sleeve block; 304. Clamping plate; 305. Support screw; 306. First motor; 307. Screw sleeve block; 308. Movable rod;

[0037] 4. First lifting mechanism; 401. First guide slide rod; 402. First movable sleeve block; 403. Winding rope; 404. Winding roller; 405. Second motor; 406. Fixed shaft; 407. First sprocket; 408. Second sprocket; 409. Transmission chain;

[0038] 5. Protective mechanism; 501. Fixing plate; 502. Tie rod; 503. Fixing block; 504. Fixing spring; 505. Protective airbag; 506. Air supply pipe; 507. Connecting pipe; 508. High-pressure air pump; 509. Dustproof net;

[0039] 6. Second lifting mechanism; 601. Fixed frame; 602. Second guide slide bar; 603. Second movable sleeve block; 604. Lifting plate; 605. Reinforcing rib; 606. Connecting plate; 607. First hydraulic cylinder. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0041] Specific implementation examples are given below.

[0042] Please see Figures 1-6 This utility model provides a transport device for electromechanical engineering equipment, including a transport device body 1, protective mechanisms 5 located on the front and rear sides of the transport device body 1, an anti-vibration mechanism 2 provided at the bottom of the transport device body 1, clamping mechanisms 3 provided at the bottom of the storage box 101, first lifting mechanisms 4 provided on the left and right sides of the storage box 101, and second lifting mechanisms 6 provided on the front outer wall of the storage box 101.

[0043] like Figure 1 , Figure 2 and Figure 4As shown, the main body 1 of the transport device includes a storage box 101; the protective mechanism 5 includes two fixing plates 501, each fixing plate 501 has a pull rod 502 fixedly connected to the middle of its opposite side, each pull rod 502 has a fixing block 503 fixedly connected to its middle, each fixing plate 501 has a protective airbag 505 fixedly connected to its opposite side, each protective airbag 505 has an air supply pipe 506 fixedly connected to its opposite side, and each air supply pipe 506 has a fixed connection to its opposite side. There are connecting pipes 507, and a high-pressure air pump 508 is fixedly connected to the bottom of the two connecting pipes 507. A dustproof net 509 is fixedly connected to the air outlet of each high-pressure air pump 508. A fixing spring 504 is connected to the opposite side of the two fixing blocks 503. Each fixing spring 504 is located on the outer wall of the pull rod 502. The fixing blocks 503 are elastically connected to the storage box 101 through the fixing springs 504. The two pull rods 502 are slidably connected to the front and rear sides of the storage box 101 respectively.

[0044] Through the above scheme: when the device enters the storage box 101 by pulling the lever 502, the lever 502 is released. Since the fixed stop 503 is elastically connected to the storage box 101 through the fixed spring 504, under the elastic force of the fixed spring 504, the fixed plates 501 on both sides are pushed to move towards each other, so that the protective airbag 505 contacts the front and rear sides of the device. The high-pressure air pump 508 is started, and air is inflated inside the protective airbag 505 through the connecting pipe 507 and the air supply pipe 506, so that the protective airbag 505 expands and provides flexible protection for the front and rear sides of the device.

[0045] like Figure 1 and Figure 6 As shown, a handle 102 is fixedly connected to the left side of the storage box 101. Support frames 103 are provided on the front and rear sides of the bottom of the storage box 101. Guide wheels 104 are fixedly connected to the left and right sides of each support frame 103. The anti-vibration mechanism 2 includes several damping springs 201. Several damping springs 201 are arranged between the support frame 103 and the storage box 101. The storage box 101 is elastically connected to the support frame 103 through the damping springs 201. A first magnet block 202 is fixedly connected to the left and right sides of the top of each support frame 103. A second magnet block 203 is provided on the top of each first magnet block 202. The first magnet block 202 and the second magnet block 203 are magnetically repelled. A guide rod 204 is fixedly connected to the top of each second magnet block 203. The guide rod 204 is slidably connected to the support frame 103.

[0046] The above solution works as follows: When subjected to vibration, the storage box 101 moves downward, and the guide rod 204 pushes the second magnet 203 downward. Since the first magnet 202 and the second magnet 203 repel each other magnetically, a repulsive force is generated between the first magnet 202 and the second magnet 203. The damping spring 201 will also generate elastic force due to the downward movement of the storage box 101. The vibration force generated by the vibration is counteracted by the repulsive force and the elastic force.

[0047] like Figure 2 , Figure 3 and Figure 4 As shown, the clamping mechanism 3 includes a clamping base 301, which is movably connected to the bottom of the storage box 101. Supporting slide rods 302 are fixedly connected to the four sides of the top of the clamping base 301. Sliding sleeve blocks 303 are slidably connected to the outer wall of each supporting slide rod 302. A clamping plate 304 is fixedly connected to the top of each sliding sleeve block 303. A supporting screw rod 305 is movably connected to the center of the bottom of the clamping base 301. The bottom of the supporting screw rod 305 is fixedly connected to the output end of the first motor 306. A screw sleeve block 307 is threadedly connected to the outside of the supporting screw rod 305. Movable rods 308 are movably connected to the four sides of the screw sleeve block 307. One end of each movable rod 308 is movably connected to a screw sleeve block 307, and the other end of each movable rod 308 is movably connected to a screw sleeve block 307.

[0048] Through the above scheme: the first motor 306 starts and drives the support screw 305 to rotate, and under the action of the thread, pushes the screw sleeve block 307 to move down. Since one end of the movable rod 308 is movably connected to the screw sleeve block 307, and the other end of the movable rod 308 is movably connected to the screw sleeve block 307, under the action of the movable rod 308, pushes the sliding sleeve blocks 303 on the four sides to drive the clamping plate 304 to close along the support sliding rod 302, thus completing the fixation of the equipment.

[0049] like Figure 1 and Figure 2 As shown, the first lifting mechanism 4 includes two first guide slides 401. The two first guide slides 401 are fixedly connected to the left and right sides of the inner wall of the storage box 101. A first movable sleeve block 402 is slidably connected to the outside of each first guide slide block 401. The two first movable sleeve blocks 402 are fixedly connected to the clamping base 301. A winding rope 403 is fixedly connected to the top of the two first movable sleeve blocks 402 on the opposite side. A winding roller 404 is wound around the top of the two winding ropes 403. The front of the left winding roller 404 is fixedly connected to the output end of the second motor 405. A fixed shaft 406 is fixedly connected to the rear of the two winding rollers 404. A first sprocket 407 is fixedly connected to the rear of the left fixed shaft 406. A second sprocket 408 is fixedly connected to the rear of the right fixed shaft 406. The first sprocket 407 is chain-driven to the second sprocket 408 through a transmission chain 409.

[0050] Through the above scheme: the second motor 405 starts and drives the left take-up roller 404 to rotate. Under the action of the fixed shaft 406, the first sprocket 407 rotates synchronously. Since the first sprocket 407 is chain-driven with the second sprocket 408 through the transmission chain 409, the friction force pushes the transmission chain 409 to drive the second sprocket 408 to rotate synchronously. Thus, the take-up rollers 404 on both sides rotate together to wind up the take-up rope 403. Under the action of the first movable sleeve block 402, the clamping base 301 moves upward along the first guide slide rod 401, completing the lifting of the clamping base 301.

[0051] like Figure 1 and Figure 5 As shown, the second lifting mechanism 6 includes two fixed frames 601, which are fixedly connected to the left and right sides of the front outer wall of the storage box 101, respectively. A second guide slide rod 602 is fixedly connected to the facing side inside each fixed frame 601. A second movable sleeve block 603 is slidably connected to the outside of each second guide slide rod 602. A lifting plate 604 is fixedly connected to the front of each second movable sleeve block 603. A reinforcing rib 605 is fixedly connected to the bottom of each lifting plate 604. A connecting plate 606 is fixedly connected to the opposite side of each of the two second movable sleeve blocks 603. The bottom of each connecting plate 606 is fixedly connected to the output end of the first hydraulic cylinder 607.

[0052] Through the above scheme: the first hydraulic cylinder 607 is activated to drive the connecting plate 606 to move upward, causing the second movable sleeve block 603 to move upward along the second guide slide rod 602, thereby causing the lifting plate 604 to move upward, thus completing the lifting of the lifting plate 604.

[0053] Working principle:

[0054] In actual use, firstly, the connecting plate 606 is moved upward by the first hydraulic cylinder 607, which causes the second movable sleeve block 603 to move the lifting plate 604 upward, thus completing the lifting of the lifting plate 604.

[0055] Secondly, the second motor 405 drives the left take-up roller 404 to rotate, and the first sprocket 407 rotates synchronously under the action of the fixed shaft 406, thereby driving the transmission chain 409 to drive the second sprocket 408 to rotate synchronously, so that the take-up rollers 404 on both sides rotate together, and the take-up rope 403 is used to take up the rollers, so that the clamping base 301 moves up under the action of the first movable sleeve block 402, thus completing the lifting of the clamping base 301.

[0056] Next, the first motor 306 drives the support screw 305 to rotate, pushing the screw sleeve block 307 to move down. The movable rod 308 then pushes the sliding sleeve blocks 303 on all four sides to close the clamping plate 304, thus completing the fixation of the equipment.

[0057] Then, by pulling the lever 502, when the equipment enters the storage box 101, the lever 502 is released, and the fixed spring 504 pushes the fixed plates 501 on both sides to move towards each other, so that the protective airbag 505 contacts the front and rear sides of the equipment. The high-pressure air pump 508 inflates the protective airbag 505, causing the protective airbag 505 to expand and provide flexible protection for the front and rear sides of the equipment.

[0058] Finally, when subjected to vibration, the storage box 101 moves downward, and the guide rod 204 pushes the second magnet 203 downward. The first magnet 202 and the second magnet 203 generate a repulsive force, and the damping spring 201 squeezes to generate an elastic force. The repulsive force and the elastic force are used to counteract the vibration force generated by the vibration.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An apparatus for transporting equipment for electromechanical engineering, comprising a transporting device body (1), a protection mechanism (5) located on the front and rear sides of the transporting device body (1), characterized in that, The main body (1) of the transport device includes a storage box (101); The protective mechanism (5) includes two fixed plates (501). A pull rod (502) is fixedly connected to the middle of the opposite side of each of the two fixed plates (501). A fixed stop block (503) is fixedly connected to the middle of each of the two pull rods (502). A protective airbag (505) is fixedly connected to the opposite side of each of the two fixed plates (501). An air supply pipe (506) is fixedly connected to the opposite side of each of the two protective airbags (505). A connecting pipe (507) is fixedly connected to the opposite side of each of the two air supply pipes (506). A high-pressure air pump (508) is fixedly connected to the bottom of each of the two connecting pipes (507). A dustproof net (509) is fixedly connected to the outlet of each of the high-pressure air pumps (508).

2. The electromechanical engineering equipment transport device according to claim 1, characterized in that: Each of the two fixed blocks (503) is connected to a fixed spring (504) on its opposite side. Each fixed spring (504) is located on the outer wall of the pull rod (502). The fixed blocks (503) are elastically connected to the storage box (101) through the fixed springs (504). The two pull rods (502) are slidably connected to the front and rear sides of the storage box (101) respectively.

3. The electromechanical engineering equipment transport device according to claim 1, characterized in that: The storage box (101) has a handle (102) fixedly connected to its left side. Support frames (103) are provided on the front and rear sides of the bottom of the storage box (101). Guide wheels (104) are fixedly connected to the left and right sides of each support frame (103).

4. The electromechanical engineering equipment transport device according to claim 1, characterized in that: The bottom of the main body (1) of the transport device is provided with an anti-vibration mechanism (2). The anti-vibration mechanism (2) includes several damping springs (201). Several damping springs (201) are arranged between the support frame (103) and the storage box (101). The storage box (101) is elastically connected to the support frame (103) through the damping springs (201). Each support frame (103) has a first magnet block (202) fixedly connected to the left and right sides of the top. Each first magnet block (202) has a second magnet block (203) on its top. The first magnet block (202) and the second magnet block (203) are magnetically repelled. Each second magnet block (203) has a guide rod (204) fixedly connected to its top. The guide rod (204) is slidably connected to the support frame (103).

5. The electromechanical engineering equipment transport device according to claim 1, characterized in that: The storage box (101) is provided with a clamping mechanism (3) at its inner bottom. The clamping mechanism (3) includes a clamping base (301). The clamping base (301) is movably connected to the bottom of the storage box (101). Supporting slide rods (302) are fixedly connected to the front, back, left and right sides of the top of the clamping base (301). Sliding sleeve blocks (303) are slidably connected to the outer wall of each supporting slide rod (302). A clamping plate (304) is fixedly connected to the top of each sliding sleeve block (303).

6. The electromechanical engineering equipment transport device according to claim 5, characterized in that: A support screw (305) is movably connected to the center of the bottom of the clamping base (301). The bottom of the support screw (305) is fixedly connected to the output end of the first motor (306). A screw sleeve (307) is threaded onto the outside of the support screw (305). Movable rods (308) are movably connected to the four sides of the screw sleeve (307). One end of each movable rod (308) is movably connected to a screw sleeve (307), and the other end of each movable rod (308) is movably connected to a screw sleeve (307).

7. The electromechanical engineering equipment transport device according to claim 1, characterized in that: The storage box (101) is provided with a first lifting mechanism (4) on both the left and right sides. The first lifting mechanism (4) includes two first guide slides (401). The two first guide slides (401) are fixedly connected to the left and right sides of the inner wall of the storage box (101). A first movable sleeve block (402) is slidably connected to the outside of each first guide slide block (401). The two first movable sleeve blocks (402) are fixedly connected to the clamping base (301). A winding rope (403) is fixedly connected to the top of the two first movable sleeve blocks (402) on the opposite side. A winding roller (404) is wound around the top of the two winding ropes (403).

8. The electromechanical engineering equipment transport device according to claim 7, characterized in that: The front of the left take-up roller (404) is fixedly connected to the output end of the second motor (405). A fixed shaft (406) is fixedly connected to the rear of both take-up rollers (404). A first sprocket (407) is fixedly connected to the rear of the left fixed shaft (406), and a second sprocket (408) is fixedly connected to the rear of the right fixed shaft (406). The first sprocket (407) is chain-driven with the second sprocket (408) through a transmission chain (409).

9. The electromechanical engineering equipment transport device according to claim 1, characterized in that: The storage box (101) is provided with a second lifting mechanism (6) on the front outer wall. The second lifting mechanism (6) includes two fixed frames (601). The two fixed frames (601) are fixedly connected to the left and right sides of the front outer wall of the storage box (101). A second guide slide rod (602) is fixedly connected to the opposite side inside each fixed frame (601). A second movable sleeve block (603) is slidably connected to the outside of each second guide slide rod (602). A lifting plate (604) is fixedly connected to the front of each second movable sleeve block (603). A reinforcing rib (605) is fixedly connected to the bottom of each lifting plate (604).

10. A transport device for electromechanical engineering equipment according to claim 9, characterized in that: Each of the two second movable sleeve blocks (603) has a connecting plate (606) fixedly connected to its opposite side, and the bottom of each connecting plate (606) is fixedly connected to the output end of the first hydraulic cylinder (607).

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