Encircling type pruning robot

Abstract

The invention provides a surrounding type pruning robot which comprises a walking device and a pruning device, the pruning device is installed at the top of the walking device, and the walking device comprises a supporting frame and a walking mechanism which is installed on the inner side of the supporting frame, supported on a tree trunk and walks along the tree trunk; the supporting frame comprises two supporting rings and a connecting column fixedly connecting the two supporting rings, each supporting ring is composed of two sector rings hinged to each other, the sector rings are opened and then arranged on a tree trunk in a sleeving mode, the other ends of the sector rings are locked through bolts, and therefore the pruning robot is installed on the tree trunk. A connecting rod for mounting a traveling mechanism is connected between the two supporting rings; the pruning devices are evenly connected to the supporting ring located on the upper portion, each pruning device comprises a fixing block, an arc-shaped installation block and a chain saw, the arranged supporting frame can be opened and embraced on a tree trunk, so that the robot is fixed to the tree trunk, operation is convenient, and the installation efficiency of the robot is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tree pruning, and in particular to an embracing type pruning robot. Background Art

[0002] With the acceleration of urbanization, power transmission lines face increasing safety hazards in areas where trees grow, mainly manifested in the collision of tree branches with power transmission lines, causing power failures and equipment damage. Therefore, there is an urgent need for an efficient, safe and precise tree pruning device to meet the pruning needs of large trees and complex environments, thereby ensuring the safety and stable operation of power transmission lines. In the current tree pruning work, manual pruning is mainly relied on, which not only consumes manpower and resources, but also poses certain safety hazards. Traditional pruning methods are often inaccurate and inefficient due to the instability and lack of flexibility of manual operation, and accidents are prone to occur when operating at heights.

[0003] Although there are some mechanical pruning devices on the market, most of them are only suitable for small trees. Chain saws lack the ability to adapt to different trunk thicknesses. When pruning branches, they cannot be cut along the root of the branch, resulting in a large amount of residual length of the branch on the trunk, affecting the movement of the pruning machine and the efficiency of pruning. Summary of the invention

[0004] In order to overcome the problems existing in the background technology, the present invention provides an embracing type pruning robot to solve the technical problem that the current pruning device 2 mentioned in the background technology lacks the ability to adapt to the thickness of tree trunks 5 of different sizes.

[0005] To achieve the above purpose, the invention is implemented through the following technical solutions: The embracing pruning robot comprises a walking device 1 and a pruning device 2. The pruning device 2 is installed on the top of the walking device 1. The walking device 1 comprises a support frame 3 and a walking mechanism 4 installed on the inner side of the support frame 3 and supported on a tree trunk 5 and walking along the tree trunk 5; the support frame 3 comprises two supporting rings 31 and a connecting column 32 for fixing the two supporting rings 31. The two supporting rings 31 are respectively composed of two mutually hinged fan rings. The fan rings are opened and then put on the tree trunk 5, and the other end is locked by bolts, so that the pruning robot is installed on the tree trunk 5. ; A connecting rod 33 for installing the walking mechanism 4 is connected between the two supporting rings 31; the pruning device 2 is provided with multiple and evenly connected to the supporting ring 31 located above, and the pruning device 2 includes a fixed block 21, an arc-shaped mounting block 22, and a chain saw 23. The fixed block 21 is installed on the supporting ring 31, and the arc-shaped mounting block 22 is connected to the side wall of the fixed block 21; the lower part of the arc-shaped surface of the arc-shaped mounting block 22 is provided with a roller 24 supported on the surface of the trunk 5, and the upper part is provided with a chain saw 23, and the chain saw 23 is set as an arc structure that matches the surface of the trunk 5.

[0006] Preferably, the chain saw 23 includes a guide plate 231, a saw chain 232, a sprocket 233, and a motor I 234; the guide plate 231 is an arc-shaped structure, and the side surface is fixedly connected to the side wall of the arc-shaped mounting block 22, the saw chain 232 is sleeved on the guide plate 231 along the arc-shaped edge of the guide plate 231, and the two ends are sleeved on the sprockets 233 installed at the two ends of the guide plate 231, and one of the sprockets 233 is transmission-connected to the motor I 234 installed on the arc-shaped mounting block 22; the connecting pieces on both sides of the saw chain 232 are stuck in the arc-shaped edge of the guide plate 231 so that the saw chain 232 moves along the edge of the guide plate 231, and the saw chain 232 is provided with saw teeth for cutting branches.

[0007] Preferably, a guide rod 221 inserted into a socket provided on a side of the fixing block 21 is provided on the side of the arc-shaped mounting block 22 , and an adaptive spring 222 sleeved on the guide rod 221 is connected between the arc-shaped mounting block 22 and the fixing block 21 .

[0008] Preferably, the side end of the fixed block 21 is movably inserted into the square sleeve 211, and an adjusting screw 212 is rotatably installed on the end of the square sleeve 211. The adjusting screw 212 is threadedly connected to one end of the fixed block 21 inserted into the square sleeve 211, and the end of the adjusting screw 212 extends out of the square sleeve 211 to facilitate the rotation of the adjusting screw 212.

[0009] Preferably, a hand wheel 213 is provided at the end of the adjusting screw rod 212 for easy rotation.

[0010] Preferably, the walking mechanism 4 includes a crawler track 41, a shock absorbing system 42, and a motor II 43. The crawler track 41 is installed on the connecting rod 33 through the shock absorbing system 42. The motor II 43 is arranged on the side of the crawler track 41 and is connected to the crawler track 41 to drive the crawler track 41 to move.

[0011] Preferably, the shock absorbing system 42 includes two pairs of inclined brackets 421 and a pair of shock absorbing brackets 422; the inclined directions of the inclined brackets 421 and the shock absorbing brackets 422 are opposite, the two pairs of the inclined brackets 421 are arranged parallel to each other, and the two ends are respectively hinged to the connecting rod 33 and the track 41, and the two inclined brackets 421 of each pair of inclined brackets 421 are respectively connected to the two sides of the track 41 and the connecting rod 33; the two brackets of a pair of shock absorbing brackets 422 are respectively arranged on both sides of the track 41, and the shock absorbing brackets 422 are elastic telescopic structures, and the two ends are respectively hinged to the side walls of the track 41 and the side walls of the connecting rod 33.

[0012] Preferably, the shock-absorbing bracket 422 includes a telescopic rod 4221, a telescopic sleeve 4222, and a shock-absorbing spring 4223. One end of the telescopic rod 4221 and the telescopic sleeve 4222 are respectively hinged on the track 41 and the connecting rod 33, and the other end is telescopically sleeved together; the shock-absorbing spring 4223 is sleeved on the telescopic rod 4221, one end of which abuts against the end of the telescopic sleeve 4222, and the other end abuts against a limiting step set on the telescopic rod 4221.

[0013] Preferably, the connecting rod 33 is also equipped with an adjusting device 44 for adjusting the supporting angle of the shock-absorbing bracket 422 and thus adjusting the supporting height of the crawler 41. The adjusting device 44 includes a slider 441 and an electric push rod 442. The slider 441 is slidably installed on the connecting rod 33, and the electric push rod 442 is installed on the connecting rod 33. The pushing end of the electric push rod 442 is connected to the slider 441 to push the slider 441 to move. The end of the telescopic rod 4221 is hinged on the slider 441. The movement of the slider 441 pushes the angle of the shock-absorbing bracket 422 to change.

[0014] Preferably, a battery 6 for providing power to the motor I 234 , the motor II 43 , and the electric push rod 442 is installed on the support frame 3 .

[0015] The beneficial effects of the present invention are as follows: the support frame provided by the present invention can be opened and embraced on the tree trunk, so that the robot is fixed on the tree trunk, the operation is convenient, and the efficiency of robot installation is improved; the arc-shaped chain saw provided can fit the surface of the tree trunk as much as possible, so that the chain saw can cut along the root of the branch, and the branch is trimmed neatly and cleanly, thereby improving the efficiency of branch pruning without affecting the upward movement of the walking device; the shock absorbing system provided on the walking device can adjust the position of the crawler according to the thickness of the tree trunk to make it in close contact with the trunk, so that the robot can adapt to tree trunks of different thicknesses and improve the adaptability of pruning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0017] Figure 2 It is a structural schematic diagram of the walking device.

[0018] Figure 3 It is a structural schematic diagram of the support frame.

[0019] Figure 4 2 is a schematic structural diagram of the trimming device.

[0020] Figure 5 It is a structural schematic diagram of the chain saw.

[0021] Figure 6 It is a three-dimensional schematic diagram of the cross-sectional structure of the trimming device.

[0022] Figure 7 It is a structural schematic diagram of the walking mechanism.

[0023] Figure 8 Schematic diagram of the structure of the shock absorbing system.

[0024] Fig. 9 Schematic diagram of the structure of the shock-absorbing bracket.

[0025] Fig.10 It is a structural schematic diagram of the regulating device. DETAILED DESCRIPTION

[0026] In order to make the objectives, technical solutions and beneficial effects of the present invention more clear, preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to facilitate understanding by technicians.

[0027] like Figure 1-10As shown, the present invention provides an embracing type pruning robot, comprising a walking device 1 and a pruning device 2, wherein the pruning device 2 is installed on the top of the walking device 1, and the walking device 1 comprises a support frame 3 and a walking mechanism 4 installed on the inner side of the support frame 3 and supported on a tree trunk 5 and walking along the tree trunk 5; the support frame 3 comprises two supporting rings 31 and a connecting column 32 for fixing the two supporting rings 31, and the two supporting rings 31 are respectively composed of two mutually hinged fan rings, and the fan rings are opened and then put on the tree trunk 5, and the other end is locked by bolts, so that the pruning robot is installed on the tree trunk 5. On the trunk 5; a connecting rod 33 for installing the walking mechanism 4 is connected between the two supporting rings 31; the pruning device 2 is provided with multiple and evenly connected to the supporting ring 31 located above, the pruning device 2 includes a fixed block 21, an arc-shaped mounting block 22, and a chain saw 23, the fixed block 21 is installed on the supporting ring 31, and the arc-shaped mounting block 22 is connected to the side wall of the fixed block 21; the lower part of the arc-shaped surface of the arc-shaped mounting block 22 is provided with a roller 24 supported on the surface of the trunk 5, and the upper part is installed with a chain saw 23, and the chain saw 23 is set as an arc structure that matches the surface of the trunk 5. When the present invention is in use, the fan ring of the support ring 31 is opened through the hinge point. Since the upper and lower support rings 31 are connected by the connecting rod 33, the two support rings 31 are opened together, and then embraced on the trunk 5. The ends of the fan rings are locked by bolts, and the walking device 1 is supported on the trunk 5 to walk upward. During the walking process, the pruning device 2 moves upward under the support of the roller 24, and the arc-shaped chain saw 23 on the chain saw 23 moves along the surface of the trunk 5. When encountering branches, the chain saw 23 cuts the branches. The support frame 3 of the present invention can be opened and embraced on the trunk 5, so that the robot is fixed on the trunk 5, which is easy to operate and improves the efficiency of robot installation. The arc-shaped chain saw 23 can fit the surface of the trunk 5 as much as possible, so that the chain saw 23 cuts along the root of the branch, prunes the branch neatly and cleanly, improves the efficiency of branch pruning, and does not affect the walking device 1.

[0028] like Figure 5As shown, the chain saw 23 includes a guide plate 231, a saw chain 232, a sprocket 233, and a motor I 234; the guide plate 231 is an arc-shaped structure, and the side surface is fixedly connected to the side wall of the arc-shaped mounting block 22, the saw chain 232 is sleeved on the guide plate 231 along the arc-shaped edge of the guide plate 231, and the two ends are sleeved on the sprockets 233 installed at the two ends of the guide plate 231, and one of the sprockets 233 is transmission-connected to the motor I 234 installed on the arc-shaped mounting block 22; the connecting pieces on both sides of the saw chain 232 are stuck in the arc-shaped edge of the guide plate 231, so that the saw chain 232 moves along the edge of the guide plate 231, and the saw chain 232 is provided with saw teeth for cutting branches. The motor Ⅰ234 drives the sprocket 233 to rotate, and the sprocket 233 drives the saw chain 232 to rotate along the edge of the arc-shaped guide plate 231, and the saw teeth move to cut the branches. Since the saw chain 232 moves in an arc shape, the branches can be cut along the surface of the trunk 5, avoiding the situation where there are more branch roots remaining on the trunk 5, the pruning is not clean, and the pruning efficiency is low.

[0029] like Figure 6 As shown, the side of the arc-shaped mounting block 22 is provided with a guide rod 221 inserted into a socket provided on the side of the fixing block 21, and an adaptive spring 222 sleeved on the guide rod 221 is connected between the arc-shaped mounting block 22 and the fixing block 21. When the pruning device 2 moves upward on the tree trunk 5 through the roller 24, since the thickness of the tree trunk 5 is uneven, some are thick and some are thin, when encountering a thicker part, the guide rod 221 expands and contracts in the socket, and the adaptive spring 222 compresses, so that the pruning device 2 can be flexibly adjusted according to the thickness of the tree trunk 5 during the pruning process, and can adapt to the uneven thickness of the tree trunk 5.

[0030] like Figure 6 As shown, the side end of the fixed block 21 is movably inserted into the square sleeve 211, and the end of the square sleeve 211 is rotatably installed with an adjusting screw 212, which is threadedly connected to one end of the fixed block 21 inserted into the square sleeve 211, and the end of the adjusting screw 212 extends out of the square sleeve 211, which is convenient for rotating the adjusting screw 212. The adjusting screw 212 is rotated to make the adjusting screw 212 threadably rotate in the fixed block 21, so that the fixed block 21 drives the pruning mechanism to move in the square sleeve 211, so that the contact between the pruning mechanism and the surface of the trunk 5 can be adjusted according to the thickness of the trunk 5, so that the robot can adapt to trees of different thicknesses.

[0031] like Figure 6 As shown, a hand wheel 213 is provided at the end of the adjusting screw rod 212 for easy rotation.

[0032] like Figure 7As shown, the walking mechanism 4 includes a crawler 41, a shock absorbing system 42, and a motor II 43. The crawler 41 is installed on the connecting rod 33 through the shock absorbing system 42. The motor II 43 is arranged on the side of the crawler 41 and is connected to the crawler 41 to drive the crawler 41 to move. After the robot is installed on the tree trunk 5, the crawler 41 contacts the tree trunk 5. Driven by the motor II 43, the crawler 41 moves upward along the tree trunk 5. The shock absorbing system 42 enables the crawler 41 to move upward smoothly along the unevenly thick tree trunk 5, so that it can adapt to the tree trunks 5 of different thicknesses and unevenly thick tree trunks 5, thereby improving the adaptability of the robot to pruning.

[0033] like Figure 8 As shown, the shock absorbing system 42 includes two pairs of inclined brackets 421 and a pair of shock absorbing brackets 422; the inclined directions of the inclined brackets 421 and the shock absorbing brackets 422 are opposite, the two pairs of the inclined brackets 421 are arranged parallel to each other, and the two ends are respectively hinged to the connecting rod 33 and the crawler 41, and the two inclined brackets 421 of each pair of inclined brackets 421 are respectively connected to the crawler 41 and the two sides of the connecting rod 33; the two brackets of a pair of shock absorbing brackets 422 are respectively arranged on both sides of the crawler 41, and the shock absorbing brackets 422 are elastic telescopic structures, and the two ends are respectively hinged to the side walls of the crawler 41 and the side walls of the connecting rod 33. When the shock absorbing system 42 is performing shock absorption, since the inclined directions of the inclined bracket 421 and the shock absorbing bracket 422 are opposite, it supports the track 41. When the shock absorption occurs, the angle of the inclined bracket 421 changes and the shock absorbing bracket 422 is compressed, thereby achieving a shock absorption effect, so that the invention can adapt to tree trunks 5 of different thicknesses and tree trunks 5 of uneven thicknesses, thereby improving the adaptability of the robot to pruning.

[0034] like Fig. 9 As shown, the shock-absorbing bracket 422 includes a telescopic rod 4221, a telescopic sleeve 4222, and a shock-absorbing spring 4223. One end of the telescopic rod 4221 and the telescopic sleeve 4222 are respectively hinged on the crawler 41 and the connecting rod 33, and the other end is telescopically sleeved together; the shock-absorbing spring 4223 is sleeved on the telescopic rod 4221, one end of which abuts against the end of the telescopic sleeve 4222, and the other end abuts against the limit step set on the telescopic rod 4221. When the shock-absorbing effect occurs, the telescopic rod 4221 is telescoped in the telescopic sleeve 4222, and the shock-absorbing spring 4223 is repeatedly compressed and stretched, thereby achieving a shock-absorbing effect.

[0035] like Fig.10As shown, the connecting rod 33 is also equipped with an adjusting device 44 for adjusting the supporting angle of the shock-absorbing bracket 422 and thus adjusting the supporting height of the crawler 41. The adjusting device 44 includes a slider 441 and an electric push rod 442. The slider 441 is slidably installed on the connecting rod 33, and the electric push rod 442 is installed on the connecting rod 33. The pushing end of the electric push rod 442 is connected to the slider 441 to push the slider 441 to move. The end of the telescopic rod 4221 is hinged on the slider 441. The movement of the slider 441 pushes the angle of the shock-absorbing bracket 422 to change. The position of the crawler 41 can be adjusted according to the thickness of the tree trunk 5 through the adjusting device 44 so as to make close contact with the tree trunk 5. The slider 441 is pushed to move by the electric push rod 442, and the sliding push shock-absorbing bracket 422 is moved, thereby pushing the crawler 41 to move, so that the crawler 41 is in contact with the tree trunk 5, which is convenient for the crawler 41 to walk on the tree trunk 5, so that the invention can adapt to tree trunks 5 of different thicknesses and tree trunks 5 of uneven thickness, thereby improving the adaptability of the robot pruning.

[0036] The support frame 3 is provided with a battery 6 for providing power to the motor I 234 , the motor II 43 , and the electric push rod 442 .

[0037] Working process: When the present invention is in use, the fan ring of the support ring 31 is opened through the hinge point. Since the upper and lower support rings 31 are connected by the connecting rod 33, the two support rings 31 are opened together, and then embraced on the trunk 5. The ends of the fan rings are locked by bolts, and the walking device 1 is supported on the trunk 5 to walk upward. During the walking process, the pruning device 2 moves upward under the support of the roller 24, and the arc-shaped chain saw 23 on the chain saw 23 moves along the surface of the trunk 5. When encountering branches, the chain saw 23 cuts the branches. The support frame 3 of the present invention can be opened and embraced on the trunk 5, so that the robot is fixed on the trunk 5, which is easy to operate and improves the efficiency of robot installation. The arc-shaped chain saw 23 can fit the surface of the trunk 5 as much as possible, so that the chain saw 23 cuts along the root of the branch, prunes the branch neatly and cleanly, improves the efficiency of branch pruning, and does not affect the walking device 1.

[0038] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. The embracing pruning robot is characterized by: The invention comprises a walking device (1) and a pruning device (2), wherein the pruning device (2) is mounted on the top of the walking device (1), and the walking device (1) comprises a support frame (3) and a walking mechanism (4) mounted on the inner side of the support frame (3) and supported on a tree trunk (5) and moving along the tree trunk (5); the support frame (3) comprises two supporting rings (31) and a connecting column (32) for fixedly connecting the two supporting rings (31); the two supporting rings (31) are respectively composed of two fan rings hinged to each other, and the fan rings are opened and then put on the tree trunk (5), and the other end is locked by bolts, so that the pruning robot is installed on the tree trunk (5); the two supporting rings ( A connecting rod (33) for installing a walking mechanism (4) is connected between the two ends of the tree trunk (5); the pruning device (2) is provided with a plurality of pruning devices (2) which are evenly connected to the support ring (31) located above, and the pruning device (2) comprises a fixed block (21), an arc-shaped mounting block (22), and a chain saw (23); the fixed block (21) is mounted on the support ring (31), and the arc-shaped mounting block (22) is connected to the side wall of the fixed block (21); a roller (24) supported on the surface of the tree trunk (5) is provided at the lower part of the arc-shaped surface of the arc-shaped mounting block (22), and a chain saw (23) is installed at the upper part; the chain saw (23) is provided as an arc-shaped structure that matches the surface of the tree trunk (5).

2. The embracing pruning robot according to claim 1, characterized in that: The chain saw (23) comprises a guide plate (231), a saw chain (232), a sprocket (233), and a motor I (234); the guide plate (231) is an arc-shaped structure, and its side is fixedly connected to the side wall of the arc-shaped mounting block (22); the saw chain (232) is sleeved on the guide plate (231) along the arc-shaped edge of the guide plate (231), and its two ends are sleeved on sprockets (233) installed at two ends of the guide plate (231); one of the sprockets (233) is drivingly connected to the motor I (234) installed on the arc-shaped mounting block (22); the connecting pieces on both sides of the saw chain (232) are clamped on the arc-shaped edge of the guide plate (231) so that the saw chain (232) moves along the edge of the guide plate (231); and the saw chain (232) is provided with saw teeth for cutting branches.

3. The embracing pruning robot according to claim 1 or 2, characterized in that: A guide rod (221) is provided on the side of the arc-shaped mounting block (22) and is inserted into a socket provided on the side of the fixing block (21); an adaptive spring (222) sleeved on the guide rod (221) is connected between the arc-shaped mounting block (22) and the fixing block (21).

4. The embracing pruning robot according to claim 3, characterized in that: The side end of the fixed block (21) is movably inserted into the square sleeve (211); an adjusting screw rod (212) is rotatably mounted on the end of the square sleeve (211); the adjusting screw rod (212) is threadedly connected to one end of the fixed block (21) inserted into the square sleeve (211); the end of the adjusting screw rod (212) extends out of the square sleeve (211) to facilitate the rotation of the adjusting screw rod (212).

5. The embracing pruning robot according to claim 4, characterized in that: A hand wheel (213) is provided at the end of the adjusting screw rod (212) for easy rotation.

6. The embracing pruning robot according to any one of claims 1, 2, 4 and 5, characterized in that: The walking mechanism (4) comprises a crawler belt (41), a shock absorbing system (42), and a motor II (43). The crawler belt (41) is mounted on a connecting rod (33) via the shock absorbing system (42). The motor II (43) is arranged on the side of the crawler belt (41) and is transmission-connected to the crawler belt (41) to drive the crawler belt (41) to move.

7. The embracing pruning robot according to claim 6, characterized in that: The shock absorbing system (42) comprises two pairs of inclined brackets (421) and a pair of shock absorbing brackets (422); the inclined directions of the inclined brackets (421) and the shock absorbing brackets (422) are opposite; the two pairs of inclined brackets (421) are arranged parallel to each other, and the two ends are respectively hinged on the connecting rod (33) and the crawler (41); the two inclined brackets (421) of each pair of inclined brackets (421) are respectively connected to the crawler (41) and the two sides of the connecting rod (33); the two brackets of a pair of shock absorbing brackets (422) are respectively arranged on the two sides of the crawler (41); the shock absorbing brackets (422) are elastic telescopic structures, and the two ends are respectively hinged on the side walls of the crawler (41) and the side walls of the connecting rod (33).

8. The embracing pruning robot according to claim 7, characterized in that: The shock-absorbing bracket (422) comprises a telescopic rod (4221), a telescopic sleeve (4222), and a shock-absorbing spring (4223); one end of the telescopic rod (4221) and the telescopic sleeve (4222) are respectively hinged on the track (41) and the connecting rod (33), and the other end is telescopically sleeved together; the shock-absorbing spring (4223) is sleeved on the telescopic rod (4221), one end of which abuts against the end of the telescopic sleeve (4222), and the other end abuts against a limiting step provided on the telescopic rod (4221).

9. The embracing pruning robot according to claim 7 or 8, characterized in that: The connecting rod (33) is also provided with an adjusting device (44) for adjusting the supporting angle of the shock-absorbing bracket (422) and thereby adjusting the supporting height of the crawler track (41). The adjusting device (44) comprises a slider (441) and an electric push rod (442). The slider (441) is slidably mounted on the connecting rod (33). The electric push rod (442) is mounted on the connecting rod (33). The pushing end of the electric push rod (442) is connected to the slider (441) to push the slider (441) to move. The end of the telescopic rod (4221) is hinged on the slider (441). The slider (441) moves to push the shock-absorbing bracket (422) to change its angle.

10. The embracing pruning robot according to claim 9, characterized in that: A storage battery (6) for providing power to the motor I (234), the motor II (43), and the electric push rod (442) is installed on the support frame (3).

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