Power cable construction guide frame

Abstract

The invention discloses a power cable construction guide frame which comprises a supporting rod, a mounting frame and a guide part, the mounting frame is arranged at the bottom of the supporting rod and connected with the supporting rod, the guide part comprises sliding rods and guide wheels, the sliding rods are symmetrically arranged on the two sides of the center line of the mounting frame and connected with the supporting rod, and the guide wheels are arranged on the sliding rods. The multiple guide wheels are symmetrically arranged on the two sides of the center line of the sliding rod. According to the cable pay-off device, the purpose of supporting cable pay-off can be achieved through the arrangement of the sliding rods and the guide wheels, the purpose of paying off cables in opposite directions at the same time can be achieved by workers according to the penetrating mode on the cable guide wheels, and multiple cables can be paid off at the same time through the arrangement of the guide wheels; as the guide wheels are located on the two sides of the center line of the sliding rod, cables can be prevented from being wound mutually in the cable pay-off process, and the pay-off efficiency and pay-off quality of the cables are greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power construction, and in particular relates to a guide frame for electric power cable construction. Background Art

[0002] Wires and cables are wire products used to transmit electrical (magnetic) energy, information and realize electromagnetic energy conversion. Wires and cables in a broad sense are also referred to as cables. Cables in a narrow sense refer to insulated cables. The wire and cable industry is the second largest industry in China after the automobile industry. The product variety satisfaction rate and domestic market share are both over 90%. Now a large number of cables are laid out and conducted through underground cable wells. With the increasing number of underground cable wells, the workload of laying out cables is also increasing, especially for large-scale power distribution projects, which require a large amount of cables.

[0003] At present, cable laying is generally done manually by placing a pulley or a simple pay-off frame outside the cable well. The specific problems of this pay-off method are as follows: it is impossible to pay out two cables in opposite directions at the same time; when multiple cables are paid out at the same time, the cables will be entangled with each other, and the tangled cables need to be separated manually, which is time-consuming. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a guide frame for power cable construction. The arrangement of the sliding rod and the guide wheel can support the laying out of the cable, and the staff can achieve the purpose of simultaneously laying out cables in opposite directions according to the penetration method on the conductor wheel. The arrangement of the guide wheel can simultaneously lay out multiple cables. Since the guide wheels are located on both sides of the center line of the sliding rod, the cables can be prevented from being entangled with each other during the cable laying process, which greatly improves the cable laying efficiency and laying quality.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A guide frame for power cable construction comprises a support rod, a mounting frame and a guide member, wherein the mounting frame is arranged at the bottom of the support rod and the mounting frame is connected to the support rod, the guide member comprises a sliding rod and a guide wheel, the sliding rod is symmetrically arranged on both sides of the center line of the mounting frame and the sliding rod is connected to the support rod, and a plurality of guide wheels are provided, and the plurality of guide wheels are symmetrically arranged on both sides of the center line of the sliding rod and the guide wheels are connected to the sliding rod.

[0007] Preferably, the mounting frame includes a mounting plate and fixing rods fixedly mounted at both ends of the center line of the mounting plate, the fixing rods are fixedly mounted on the bottom of the support rod, the sliding rod is mounted on the mounting plate, the support rods are symmetrically arranged on both sides of the center line of the fixed rod, and the mounting frame is used to support the sliding rod to ensure the normal operation of the guide wheels on the sliding rod.

[0008] Preferably, through holes are opened at both ends of the mounting plate, the sliding rod is slidably arranged in the through holes, a plurality of limit holes are opened on the sliding rod, and a limit mechanism is installed at the end of the mounting plate, the limit mechanism cooperates with the limit hole, and the setting of the limit mechanism and the through holes on the sliding rod facilitates the adjustment of the depth of the sliding rod into the cable well, thereby preventing friction between the cable and the bottom of the cable well during the cable laying process, thereby greatly ensuring the safety of the cable.

[0009] Preferably, the limiting mechanism includes a lead screw, a handle, a movable plate and a limiting column. The lead screw is rotatably mounted on the end of the mounting plate, the movable plate is threadedly mounted on the lead screw, the limiting columns are symmetrically arranged at both ends of the movable plate, and the limiting columns are fixedly mounted on the movable plate, the limiting columns cooperate with the limiting holes, and the handle is fixedly mounted on the end of the lead screw. The lead screw is rotated by rotating the handle, and the rotation of the lead screw drives the movable plate to move along the lead screw. The movement of the movable plate drives the limiting column on the movable plate to be inserted into the limiting hole, thereby achieving the purpose of limiting the sliding rod.

[0010] Preferably, a support mechanism is arranged between the sliding rods symmetrically arranged on both sides of the center line of the mounting frame, the support mechanism includes a reinforcing plate with grooves at both ends of the reinforcing plate, the sliding rod is arranged in the groove, and a fixing bolt is arranged on the side wall of the groove. The fixing bolt is threadedly installed on the side wall of the groove, and the fixing bolt cooperates with the sliding rod. The support mechanism is used to support the sliding rod to prevent the sliding rod from bending during operation, thereby greatly ensuring the safety of the device during operation.

[0011] Preferably, a leveling mechanism is also installed at both ends of the support rod, and the leveling mechanism includes a first threaded rod, a base plate and a handle. The first threaded rod is threadedly installed on the support rod, the base plate is arranged at the bottom of the support rod, and the base plate is threadedly connected to the first threaded rod. The handle is arranged above the support rod, and the handle is fixedly connected to the first threaded rod. The first threaded rod is driven to rotate by rotating the handle, and the rotation of the first threaded rod can achieve the purpose of driving the base plate to move up and down, thereby leveling the support rod and ensuring that the device is always in a stable state.

[0012] Preferably, it also includes a fixing mechanism, which includes a lifting plate, a second threaded rod, a first support arm and a second support arm, the lifting plate is arranged above the mounting plate, the second threaded rod is rotatably mounted on the mounting plate, and the mounting plate is threadedly mounted on the second threaded rod, waist-shaped holes are opened on both sides of the center line of the lifting plate, the first support arm and the second support arm are symmetrically arranged on both sides of the center line of the fixing rod, there are two first support arms and two second support arms, and the two first support arms and the second support arms are symmetrically arranged on both sides of the mounting plate, the first support arm and the second support arm are rotatably mounted on the fixing rod, sliding columns are fixedly installed on the first support arm and the second support arm, and the sliding columns on the first support arm and the second support arm are respectively slidably arranged in the waist-shaped holes on both sides of the center line of the lifting plate, a handle is fixedly installed on the top of the second threaded rod, and anti-slip plates are rotatably installed on the lower ends of the first support arm and the second support arm, and the fixing mechanism is used to fix the fixing rod on the inner wall of the cable well, and the fixing of the fixing rod realizes the purpose of fixing the sliding rod, preventing the device from shaking when the cable is laid, ensuring the safety of the device during work, and improving the laying efficiency of the cable.

[0013] Preferably, the handle is provided with a wear-resistant layer, and the provision of the wear-resistant layer on the handle can reduce the wear of the handle caused by frequent rotation of the second threaded rod, greatly improve the service life of the handle, and reduce the cost of laying cables.

[0014] Preferably, an arc-shaped plate capable of increasing the contact area with the inner wall of the cable well is provided on the outer side of the anti-skid plate, and the outer wall of the arc-shaped plate is roughened. The provision of the arc-shaped plate can increase the contact area between the anti-skid plate and the inner wall of the cable well, and the roughening of the outer wall of the arc-shaped plate can increase the friction between the arc-shaped plate and the inner wall of the cable well, thereby preventing the anti-skid plate from sliding along the inner wall of the cable well during operation, thereby greatly ensuring the safety of the device during operation.

[0015] Preferably, a buffer is also installed on the anti-slip plate, and the buffer includes a fixed plate, a strip hole is opened on the fixed plate, and a guide rod, a spring and a sliding block are arranged in the strip hole, and the two ends of the guide rod are respectively fixedly mounted on the two side walls of the strip hole, and the sliding block is slidably mounted on the guide rod, and the spring is sleeved on the guide rod, and the spring is located between the sliding block and the inner wall on the upper side of the strip hole, and the bottom of the first support arm or the second support arm is rotatably mounted on the sliding block. The arrangement of the guide rod, the spring and the sliding block can greatly improve the fixing quality of the fixing mechanism, prevent the device from shaking during the laying of the cable, and greatly improve the efficiency and quality of the cable laying by the device.

[0016] The beneficial effects of the present invention are:

[0017] 1) The setting of the sliding rod and the guide wheel can support the cable laying, and the staff can achieve the purpose of laying out cables in opposite directions at the same time according to the penetration method on the wire wheel. The setting of the guide wheel can lay out multiple cables at the same time. Since the guide wheels are located on both sides of the center line of the sliding rod, the cables can be prevented from being entangled with each other during the cable laying process, which greatly improves the cable laying efficiency and laying quality.

[0018] 2) The support rods are symmetrically arranged on both sides of the center line of the fixed rod, and the mounting frame is used to support the sliding rod to ensure the normal operation of the guide wheels on the sliding rod.

[0019] 3) The setting of the limit mechanism and the through hole on the sliding rod facilitates the adjustment of the depth of the sliding rod into the cable well, preventing the cable line from rubbing against the bottom of the cable well during the cable laying process, thereby greatly ensuring the safety of the cable line.

[0020] 4) The screw is driven to rotate by rotating the handle, and the rotation of the screw drives the moving plate to move along the screw. The movement of the moving plate drives the limiting column on the moving plate to be inserted into the limiting hole, thereby achieving the purpose of limiting the sliding rod.

[0021] 5) The support mechanism is used to support the sliding rod to prevent the sliding rod from bending during operation, thereby greatly ensuring the safety of the device during operation.

[0022] 6) The first threaded rod is driven to rotate by rotating the handle, and the rotation of the first threaded rod drives the bottom plate to move up and down, thereby leveling the support rod to ensure that the device is always in a stable state.

[0023] 7) The fixing mechanism is used to fix the fixing rod on the inner wall of the cable well. The fixing rod fixes the sliding rod to prevent the device from shaking when the cable is laid, thereby ensuring the safety of the device during operation and improving the laying efficiency of the cable.

[0024] 8) The provision of a wear-resistant layer on the handle can reduce the wear of the handle caused by frequent rotation of the second threaded rod, greatly prolonging the service life of the handle and reducing the cost of cable laying.

[0025] 9) The setting of the arc plate can increase the contact area between the anti-slip plate and the inner wall of the cable well, and roughening the outer wall of the arc plate can increase the friction between the arc plate and the inner wall of the cable well, preventing the anti-slip plate from sliding along the inner wall of the cable well during operation, thereby greatly ensuring the safety of the device during operation.

[0026] 10) The setting of the guide rod, spring and sliding block can greatly improve the fixing quality of the fixing mechanism, prevent the device from shaking during the laying of the cable, and greatly improve the efficiency and quality of the cable laying of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Attached Figure 1 It is a structural schematic diagram of the present invention.

[0028] Attached Figure 2 It is a structural schematic diagram of the guide member in the present invention.

[0029] Attached Figure 3 It is a structural schematic diagram of the fixing mechanism in the present invention.

[0030] Attached Figure 4 It is a schematic structural diagram of the buffer member in the present invention.

[0031] Attached Figure 5 The present invention Figure 2 Enlarged view of point A in the middle.

[0032] Attached Figure 6 The present invention Figure 3 Enlarged view of point B in the middle.

[0033] Attached Figure 7 It is a structural schematic diagram of the supporting mechanism in the present invention.

[0034] In the figure:

[0035] 1. Guide member; 101. Sliding rod; 102. Guide wheel; 103. Limiting hole;

[0036] 2. Support rod;

[0037] 3. Leveling mechanism; 301. Bottom plate; 302. First threaded rod; 303. Handle;

[0038] 4. Limiting mechanism; 401. Moving plate; 402. Limiting column; 403. Lead screw; 404. Handle;

[0039] 5. Mounting frame; 501. Mounting plate; 502. Fixing rod; 503. Through hole;

[0040] 6. Fixing mechanism; 601. Sliding column; 602. First supporting arm; 603. Anti-slip plate; 604. Curved plate; 605. Second threaded rod; 606. Handle; 607. Lifting plate; 608. Waist-shaped hole; 609. Second supporting arm; 6010. Buffer; 6011. Fixing plate; 6012. Guide rod; 6013. Strip hole; 6014. Spring; 6015. Sliding block;

[0041] 7. Support mechanism; 701. Reinforcement plate; 702. Fixing bolt; 703. Groove. DETAILED DESCRIPTION

[0042] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] like Figure 1 As shown, a power cable construction guide frame includes a support rod 2, a mounting frame 5 and a guide member 1, wherein the mounting frame 5 is arranged at the bottom of the support rod 2, and the mounting frame 5 is connected to the support rod 2, as shown in FIG. Figure 2 As shown, the guide member 1 includes a sliding rod 101 and a guide wheel 102. The sliding rod 101 is symmetrically arranged on both sides of the center line of the mounting frame 5, and the sliding rod 101 is connected to the support rod 2. A plurality of guide wheels 102 are provided, and the plurality of guide wheels 102 are symmetrically arranged on both sides of the center line of the sliding rod 101, and the guide wheels 102 are connected to the sliding rod 101. When guiding the laying of the cable, the order and direction of the cables passing through the guide wheels 102 are adjusted according to the laying direction of the cable, so as to achieve the purpose of laying the cables in different directions.

[0045] As an optimization solution of this embodiment, Figure 2 As shown, the mounting frame 5 includes a mounting plate 501 and fixing rods 502 fixedly mounted at both ends of the center line of the mounting plate 501 . The fixing rods 502 are fixedly mounted at the bottom of the support rod 2 , and the sliding rod 101 is mounted on the mounting plate 501 .

[0046] The support rods 2 are symmetrically arranged on both sides of the center line of the fixed rod 502 . The mounting frame 5 is used to support the sliding rod 101 to ensure the normal operation of the guide wheel 102 on the sliding rod 101 .

[0047] As an optimization solution of this embodiment, Figure 3As shown, through holes 503 are opened at both ends of the mounting plate 501, and the sliding rod 101 is slidably arranged in the through holes 503. Figure 2 As shown, a plurality of limiting holes 103 are opened on the sliding rod 101 , and a limiting mechanism 4 is installed at the end of the mounting plate 501 , and the limiting mechanism 4 matches with the limiting holes 103 .

[0048] The setting of the limit mechanism 4 and the through hole 503 on the sliding rod 101 facilitates the adjustment of the depth of the sliding rod 101 into the cable well, preventing the cable from rubbing against the bottom of the cable well during the cable laying process, thereby greatly ensuring the safety of the cable.

[0049] As an optimization solution of this embodiment, Figure 5 As shown, the limiting mechanism 4 includes a lead screw 403, a handle 404, a movable plate 401 and a limiting column 402. The lead screw 403 is rotatably mounted on the end of the mounting plate 501, and the movable plate 401 is threadedly mounted on the lead screw 403. The limiting column 402 is symmetrically arranged at both ends of the movable plate 401, and the limiting column 402 is fixedly mounted on the movable plate 401. The limiting column 402 cooperates with the limiting hole 103, and the handle 404 is fixedly mounted on the end of the lead screw 403.

[0050] The screw 403 is rotated by rotating the handle 404, and the screw 403 rotates to drive the movable plate 401 to move along the screw 403. The movement of the movable plate 401 drives the limiting column 402 on the movable plate 401 to be inserted into the limiting hole 103, thereby achieving the purpose of limiting the sliding rod 101.

[0051] As an optimization solution of this embodiment, Figure 7 As shown, a support mechanism 7 is arranged between the sliding rods 101 symmetrically arranged on both sides of the center line of the mounting frame 5, and the support mechanism 7 includes a reinforcing plate 701, grooves 703 are opened at both ends of the reinforcing plate 701, the sliding rod 101 is arranged in the groove 703, and a fixing bolt 702 is arranged on the side wall of the groove 703. The fixing bolt 702 is threadedly installed on the side wall of the groove 703, and the fixing bolt 702 cooperates with the sliding rod 101.

[0052] The support mechanism 7 is used to support the sliding rod 101 to prevent the sliding rod 101 from bending during operation, thereby greatly ensuring the safety of the device during operation.

[0053] As an optimization solution of this embodiment, Figure 6As shown, a leveling mechanism 3 is also installed at both ends of the support rod 2, and the leveling mechanism 3 includes a first threaded rod 302, a base plate 301 and a handle 303. The first threaded rod 302 is threadedly installed on the support rod 2, the base plate 301 is arranged at the bottom of the support rod 2, and the base plate 301 is threadedly connected to the first threaded rod 302, and the handle 303 is arranged above the support rod 2, and the handle 303 is fixedly connected to the first threaded rod 302.

[0054] The first threaded rod 302 is driven to rotate by rotating the handle 303 , and the rotation of the first threaded rod 302 drives the bottom plate 301 to move up and down, thereby leveling the support rod 2 to ensure that the device is always in a stable state.

[0055] As an optimization solution of this embodiment, in order to ensure that it is always in a stable state during the working process, Figure 3 As shown, it also includes a fixing mechanism 6, which includes a lifting plate 607, a second threaded rod 605, a first support arm 602 and a second support arm 609. The lifting plate 607 is arranged above the mounting plate 501, the second threaded rod 605 is rotatably mounted on the mounting plate 501, and the mounting plate 501 is threadedly mounted on the second threaded rod 605. Waist-shaped holes 608 are opened on both sides of the center line of the lifting plate 607. The first support arm 602 and the second support arm 609 are symmetrically arranged on both sides of the center line of the fixing rod 502. There are two first support arms 602 and two second support arms 609. The first support arm 602 and the second support arm 609 are symmetrically arranged on both sides of the mounting plate 501, and the first support arm 602 and the second support arm 609 are rotatably installed on the fixing rod 502, and sliding columns 601 are fixedly installed on the first support arm 602 and the second support arm 609, and the sliding columns 601 on the first support arm 602 and the second support arm 609 are respectively slidably arranged in the waist-shaped holes 608 on both sides of the center line of the lifting plate 607, and a handle 606 is fixedly installed on the top of the second threaded rod 605, and an anti-slip plate 603 is rotatably installed on the lower ends of the first support arm 602 and the second support arm 609.

[0056] The fixing mechanism 6 is used to fix the fixing rod 502 on the inner wall of the cable well. The fixing rod 502 fixes the sliding rod 101 to prevent the device from shaking when the cable is laid, thereby ensuring the safety of the device during operation and improving the laying efficiency of the cable.

[0057] As an optimization solution of this embodiment, in order to increase the service life of the handle 606, Figure 3 As shown, the handle 606 is provided with a wear-resistant layer.

[0058] The provision of the wear-resistant layer on the handle 606 can reduce the wear of the handle 606 caused by frequent rotation of the second threaded rod 605, greatly improve the service life of the handle 606, and reduce the cost of laying cables.

[0059] As an optimization solution of this embodiment, in order to ensure that the device is always in a stable state during operation, Figure 3 As shown, an arc plate 604 capable of increasing the contact area with the inner wall of the cable well is provided on the outer side of the anti-slip plate 603, and the outer wall of the arc plate 604 is roughened.

[0060] The setting of the arc plate 604 can increase the contact area between the anti-slip plate 603 and the inner wall of the cable well, and roughening the outer wall of the arc plate 604 can increase the friction between the arc plate 604 and the inner wall of the cable well, preventing the anti-slip plate 603 from sliding along the inner wall of the cable well during operation, thereby greatly ensuring the safety of the device during operation.

[0061] As an optimization solution of this embodiment, Figure 4 As shown, a buffer member 6010 is also installed on the anti-slip plate 603, and the buffer member 6010 includes a fixed plate 6011, and a strip hole 6013 is opened on the fixed plate 6011. A guide rod 6012, a spring 6014 and a sliding block 6015 are arranged in the strip hole 6013. The two ends of the guide rod 6012 are respectively fixedly installed on the two side walls of the strip hole 6013, and the sliding block 6015 is slidably installed on the guide rod 6012. The spring 6014 is sleeved on the guide rod 6012, and the spring 6014 is located between the sliding block 6015 and the inner wall on the upper side of the strip hole 6013. The bottom of the first support arm 602 or the second support arm 609 is rotatably installed on the sliding block 6015.

[0062] The provision of the guide rod 6012, the spring 6014 and the sliding block 6015 can greatly improve the fixing quality of the fixing mechanism 6, prevent the device from shaking during the laying of the cable, and greatly improve the efficiency and quality of the cable laying of the device.

[0063] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A power cable construction guide frame, comprising a support rod, a mounting frame and a guide member, characterized in that: The mounting frame is arranged at the bottom of the support rod, and the mounting frame is connected to the support rod. The guide member includes a sliding rod and a guide wheel. The sliding rod is symmetrically arranged on both sides of the center line of the mounting frame, and the sliding rod is connected to the support rod. A plurality of guide wheels are provided, and the plurality of guide wheels are symmetrically arranged on both sides of the center line of the sliding rod, and the guide wheels are connected to the sliding rod.

2. A power cable construction guide frame according to claim 1, characterized in that: The mounting frame includes a mounting plate, fixed rods fixedly mounted at both ends of the center line of the mounting plate, the fixed rods fixedly mounted at the bottom of the support rods, the sliding rods are mounted on the mounting plate, and the support rods are symmetrically arranged on both sides of the center line of the fixed rods.

3. A power cable construction guide frame according to claim 2, characterized in that: Through holes are opened at both ends of the mounting plate, the sliding rod is slidably arranged in the through holes, a plurality of limiting holes are opened on the sliding rod, and a limiting mechanism is installed at the end of the mounting plate, and the limiting mechanism matches the limiting hole.

4. A power cable construction guide frame according to claim 3, characterized in that: The limiting mechanism includes a screw, a handle, a movable plate and a limiting column. The screw is rotatably mounted on the end of the mounting plate, the movable plate is threadedly mounted on the screw, the limiting columns are symmetrically arranged at both ends of the movable plate, and the limiting columns are fixedly mounted on the movable plate. The limiting columns cooperate with the limiting holes, and the handle is fixedly mounted on the end of the screw.

5. A power cable construction guide frame according to claim 3, characterized in that: A support mechanism is arranged between the sliding rods symmetrically arranged on both sides of the center line of the mounting frame, and the support mechanism includes a reinforcing plate with grooves at both ends of the reinforcing plate. The sliding rod is arranged in the groove, and a fixing bolt is arranged on the side wall of the groove. The fixing bolt is threadedly installed on the side wall of the groove, and the fixing bolt cooperates with the sliding rod.

6. A power cable construction guide frame according to claim 1, characterized in that: A leveling mechanism is also installed at both ends of the support rod, and the leveling mechanism includes a first threaded rod, a base plate and a handle. The first threaded rod is threadedly installed on the support rod, the base plate is arranged at the bottom of the support rod, and the base plate is threadedly connected to the first threaded rod. The handle is arranged above the support rod, and the handle is fixedly connected to the first threaded rod.

7. A power cable construction guide frame according to claim 2, characterized in that: The cam is a support frame that is configured to enable the user to move the load between the first and second support arms of the vehicle and to provide a support frame for the user to move the load between the first and second support arms.

8. A power cable construction guide frame according to claim 7, characterized in that: A wear-resistant layer is arranged on the handle.

9. A power cable construction guide frame according to claim 7, characterized in that: An arc plate capable of increasing the contact area with the inner wall of the cable well is arranged on the outer side of the anti-slip plate, and the outer wall of the arc plate is roughened.

10. A power cable construction guide frame according to claim 9, characterized in that: A buffer is also installed on the anti-slip plate, and the buffer includes a fixed plate with a strip hole on the fixed plate, and a guide rod, a spring and a sliding block are arranged in the strip hole. The two ends of the guide rod are respectively fixedly installed on the two side walls of the strip hole, and the sliding block is slidably installed on the guide rod. The spring is sleeved on the guide rod, and the spring is located between the sliding block and the inner wall on the upper side of the strip hole. The bottom of the first support arm or the second support arm is rotatably installed on the sliding block.

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