Steel bar positioning and clamping device and bidirectional steel bar bending equipment

Abstract

The invention provides a reinforcing steel bar positioning and clamping device and bidirectional reinforcing steel bar bending machine.The reinforcing steel bar positioning and clamping device comprises a supporting frame, at least two clamping grooves are evenly formed in the top of the supporting frame along a straight line, two clamping blocks are symmetrically arranged on the two sides of the upper end of each clamping groove, and the clamping blocks are rotationally connected with the supporting frame; a clamping driving mechanism for driving the clamping blocks to rotate or reset towards the corresponding clamping grooves so as to clamp or release the reinforcing steel bars in the clamping grooves is arranged in the supporting frame; according to the invention, the batch processing efficiency and processing precision can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of steel bar processing equipment, and in particular relates to a steel bar positioning and clamping device and bidirectional steel bar bending processing equipment. Background Art

[0002] At present, steel bar bending equipment is usually used to replace manual bending of steel bars. In the prior art, for example, a Chinese utility model patent with authorization announcement number CN204430074U discloses a vertical steel bar bending center, which clamps and fixes the middle part of the steel bar through a steel bar clamping and fixing device, and then bends the steel bar through a bending mechanism; however, this steel bar bending equipment can only bend one steel bar at a time, and is inefficient in batch processing; and when bending long steel bars, the steel bars between the steel bar clamping and fixing device and the bending mechanism lack support and are easily dropped due to gravity, and bending at this time will affect the accuracy of the bending position.

[0003] Therefore, it is necessary to design a steel bar positioning and clamping device and a bidirectional steel bar bending processing equipment that can improve batch processing efficiency and processing accuracy to solve the current technical problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a steel bar positioning and clamping device and a bidirectional steel bar bending processing equipment for improving batch processing efficiency and processing accuracy.

[0005] The technical solution of the present invention is: a steel bar positioning and clamping device, comprising a support frame, wherein at least two clamping grooves are evenly arranged on the top of the support frame along a straight line, two clamping blocks are symmetrically arranged on both sides of the upper end of the clamping groove, the clamping blocks are rotatably connected to the support frame, and a clamping driving mechanism is arranged inside the support frame to drive the clamping blocks to rotate or reset to the corresponding clamping groove to clamp or release the steel bar inside the clamping groove;

[0006] An upper limit rod is arranged on one side above the clamping groove, and a translation driving mechanism is arranged below the upper limit rod, and the translation driving mechanism is used to drive the upper limit rod to translate to the top of the clamping groove or reset to block or give way to the steel bars in the clamping groove.

[0007] The clamping drive mechanism comprises a lifting plate arranged below the clamping block, a connecting rod is hinged on the top of the lifting plate, an end of the connecting rod facing away from the lifting plate is hinged to the clamping block, guide rods symmetrically arranged at the bottom of the lifting plate and slidably connected to the support frame in the vertical direction, and a lifting drive component for driving the lifting plate to move up and down is fixedly arranged on the support frame.

[0008] The translation driving mechanism has a slide groove arranged horizontally on the side of the support frame, a slide rod is slidingly arranged inside the slide groove, a driving plate is vertically arranged on the end of the slide rod, and a translation driving component is fixedly arranged at one end of the support frame. The translation driving component drives the driving plate to drive the slide rod to slide reciprocatingly inside the slide groove, and one end of the upper limit rod is fixedly arranged on the top of the slide rod through a limit rod bracket.

[0009] A roller assembly is slidably arranged on the support frame below the clamping groove in the vertical direction; a pushing guide block is arranged on the top of the slide bar for pushing the roller assembly to move upward and lift the steel bars inside the clamping groove upward.

[0010] The roller assembly comprises a guide seat fixedly arranged on the side of the support frame, a guide rod is slidably arranged inside the guide seat along the vertical direction, a roller bracket is arranged above the guide seat, and a roller is rotatably arranged inside the roller bracket along the horizontal direction, the bottom of the roller bracket is fixedly connected to the upper end of the guide rod, and a driving end corresponding to the pushing guide block is fixedly arranged at the bottom end of the guide rod below the guide seat.

[0011] A spring is sleeved on the outer side of the guide rod between the guide seat and the driving end, and a rounded corner is arranged at the bottom of the driving end.

[0012] The pushing guide block has a bottom surface and a top surface matching the driving end, and a slope surface is connected between the bottom surface and the top surface.

[0013] A U-shaped groove is arranged along one side of the slide bar close to the slide slot, and a convex strip matching the U-shaped groove is arranged on one side of the slide slot close to the slide bar, and the convex strip is slidably arranged inside the U-shaped groove.

[0014] Bidirectional steel bar bending processing equipment includes a base frame and a steel bar positioning and clamping device as described in any of the above items, a slide rail is arranged along the base frame, two groups of bending machine heads are arranged on the base frame, at least two groups of steel bar positioning and clamping devices are arranged between the two groups of bending machine heads, and the bottom of the bending machine head and the steel bar positioning and clamping device are both provided with a walking mechanism that drives them to move on the top of the slide rail.

[0015] The walking mechanism comprises a walking base plate and a rack, the rack is arranged on the top of the base frame in parallel with the slide rail, a walking gear meshing with the rack is rotatably arranged on the walking base plate, a walking driving component for driving the walking gear to rotate is arranged on the top of the walking base plate, a pulley matching the slide rail is arranged below the walking base plate, and the pulley is rotatably arranged on the bottom of the walking base plate through a pulley support plate.

[0016] Beneficial effects of the present invention:

[0017] (1) The steel bar positioning and clamping device of the present invention places steel bars in the clamping grooves on the support frame, and the clamping drive mechanism drives the clamping block to rotate toward the corresponding clamping groove to clamp and fix the steel bars in the clamping groove. Multiple clamping grooves and corresponding clamping blocks can be used to clamp and fix multiple steel bars at the same time. A bending machine head having a forming shaft and a main shaft with a length corresponding to all the clamping grooves can be used to bend multiple steel bars at the same time, thereby improving the efficiency of batch bending of steel bars.

[0018] (2) When the steel bar positioning and clamping device of the present invention is used for bending of relatively long steel bars, the support frame can provide support for the steel bars in the clamping groove to prevent the steel bars from falling and bending, thereby ensuring the accuracy of the bending position of the steel bars;

[0019] (3) In the steel bar positioning and clamping device of the present invention, when it is necessary to adjust the supporting position of the steel bar positioning and clamping device relative to the steel bar, the upper limit rod is driven by the translation drive mechanism to translate to the upper side of the clamping groove to block the steel bar in the clamping groove, thereby preventing the steel bar from being separated from the clamping groove when the steel bar positioning and clamping device is adjusted;

[0020] (4) When the bidirectional steel bar bending processing equipment of the present invention is used for bending longer steel bars, in order to prevent the steel bars from falling and bending, the number of steel bar positioning and clamping devices can be appropriately increased, and the support points for the steel bars can be increased to prevent the steel bars from falling and bending, so as to ensure the accuracy of the steel bar bending position. During processing, the steel bar positioning and clamping device can flexibly adjust its support position under the drive of the walking mechanism to meet different support requirements;

[0021] (5) During the processing of the bidirectional steel bar bending processing equipment of the present invention, the steel bar positioning clamping device can alternately release the steel bars to move on the slide rail, adjust its supporting position for the steel bars, and avoid interfering with the position of the bending machine head. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is one of the structural schematic diagrams of the steel bar positioning and clamping device in the present invention.

[0023] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0024] Figure 3 This is the second structural schematic diagram of the steel bar positioning and clamping device in the present invention.

[0025] Figure 4 for Figure 3 Cross-section view at the middle BB.

[0026] Figure 5 for Figure 3 A partial enlarged view of point C in the middle.

[0027] Figure 6 It is a schematic structural diagram of the bidirectional steel bar bending processing equipment in the present invention.

[0028] Figure 7 It is a structural schematic diagram of the walking mechanism in the present invention. DETAILED DESCRIPTION

[0029] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, rather than as limitations.

[0030] The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] like Figures 1 to 4As shown, the steel bar positioning and clamping device includes a support frame 1, at least two clamping grooves 14 are evenly arranged along a straight line on the top of the support frame 1, two clamping blocks 2 are symmetrically arranged on both sides of the upper end of the clamping groove 14, the clamping blocks 2 are rotatably connected to the support frame 1, and a clamping driving mechanism 3 is arranged inside the support frame 1 to drive the clamping blocks 2 to rotate or reset to the corresponding clamping groove 14 to clamp or release the steel bars inside the clamping groove 14; an upper limit rod 4 is arranged on one side above the clamping groove 14, and a translation driving mechanism 53 is arranged below the upper limit rod 4, and the translation driving mechanism 5 is used to drive the upper limit rod 4 to translate to the upper side of the clamping groove 14 or reset to block or give way to the steel bars in the clamping groove 14; in this embodiment, by placing steel bars inside the clamping groove 14 on the support frame 1, the clamping driving mechanism 3 drives the clamping blocks 2 to the corresponding clamping groove The rotation of 14 can clamp and fix the steel bars inside the clamping groove 14. Multiple clamping grooves 14 and corresponding clamping blocks 2 can be used to clamp and fix multiple steel bars at the same time. A bending machine head with a forming axis and a main axis corresponding to the length of all clamping grooves 14 can be used to bend multiple steel bars at the same time, thereby improving the efficiency of batch bending of steel bars. When used for bending longer steel bars, the support frame 1 can provide support for the steel bars in the clamping groove 14 to prevent the steel bars from falling and bending, thereby ensuring the accuracy of the bending position of the steel bars. When it is necessary to adjust the support position of the steel bar positioning and clamping device relative to the steel bar, the upper limit rod 4 is driven by the translation drive mechanism 5 to translate to the top of the clamping groove 14 to block the steel bars in the clamping groove 14, thereby preventing the steel bars from escaping from the clamping groove 14 when the steel bar positioning and clamping device is adjusted.

[0032] In the above embodiment, the support frame 1 has a bottom plate 12, and two side plates 11 are symmetrically fixed on the top of the bottom plate 12, a horizontal plate 13 is fixed between the middle parts of the two side plates 11, and clamping grooves 14 are correspondingly opened at the tops of the two side plates 11, and the clamping plate 2 is rotatably set between the upper ends of the two side plates 11.

[0033] As a specific implementation of the clamping drive mechanism 3 in the above embodiment, Figure 4As shown, the clamping drive mechanism 3 has a lifting plate 31 arranged below the clamping block 2, the top of the lifting plate 31 is hinged with a connecting rod 34, one end of the connecting rod 34 away from the lifting plate 31 is hinged with the clamping block 2, and the bottom of the lifting plate 31 is symmetrically provided with a guide rod 33 connected to the support frame 1 in a vertical direction, and a lifting drive component 32 for driving the lifting plate 31 to move up and down is fixedly provided on the support frame 1; wherein the lifting drive component 32 is fixedly provided at the bottom of the horizontal plate 13 in the center, and the guide rod 33 fixedly provided at the bottom of the side plate 11 is connected to the horizontal plate 13 in a sliding manner, and the lifting drive component 32 is fixedly provided at the bottom of the side plate 11, and the lifting drive component 32 is connected to the horizontal plate 13 through the lifting drive component 3 The output end of 2 is extended and retracted, which can drive the lifting plate 31 to move up and down. The guide rod 33 ensures the stability of the lifting plate 31 moving up and down. The side of the lower end of the clamping block 2 away from the clamping groove 14 is rotatably connected to the side plate 11, and the side of the lower end of the clamping block 2 close to the clamping groove 14 is rotatably connected to the connecting rod 34. When the lifting plate 31 moves down and up, the clamping block 2 is pulled and pushed by the connecting rod 34 to rotate, so that the clamping block 2 can press and release the steel bars inside the clamping groove 14; specifically, the lifting drive component 32 is a hydraulic cylinder, which is fixedly arranged on the cross plate 13, and the piston tube end of the hydraulic cylinder is fixedly connected to the lifting plate 31.

[0034] As a specific implementation of the translation drive mechanism 5 in the above embodiment, Figures 1 to 3 As shown, the translation driving mechanism 5 has a slide groove 51 arranged on the surface of the support frame 1 in the horizontal direction, a slide rod 52 is slidably arranged inside the slide groove 51, and a driving plate 54 is vertically arranged at the end of the slide rod 52. A translation driving component 53 is fixedly arranged at one end of the support frame 1. The translation driving component 53 drives the driving plate 54 to drive the slide rod 52 to slide back and forth inside the slide groove 51. One end of the upper limit rod 4 is fixedly arranged on the top of the slide rod 52 through the limit rod bracket 41; wherein the side plate 11 is provided with a matching moving path of the driving plate 54 The output end of the translation driving component 53 is connected to the driving plate 54. The output end of the translation driving component 53 is extended and retracted, which can drive the driving plate 54 to move horizontally. The driving plate 54 can drive the sliding rod 52 and the upper limit rod 4 fixed on the sliding rod 52 by the limit rod bracket 41 to move horizontally, so that the upper limit rod 4 is translated to the top of the clamping groove 14 or reset to form a blockage or give way to the steel bars in the clamping groove 14; specifically, the translation driving component 53 is a hydraulic cylinder, and the piston rod of the hydraulic cylinder is fixedly connected to the driving plate 54.

[0035] In some embodiments, Figure 1 and 2As shown, a roller assembly 6 is provided on the support frame 1 below the clamping groove 14 for sliding in the vertical direction; a pushing guide block 55 is provided on the top of the slide bar 52 for pushing the roller assembly 6 to move up and lift the steel bar inside the clamping groove 14 upward; when the steel bar positioning and clamping device moves corresponding to the steel bar, in order to avoid the steel bar causing wear to the clamping groove 14 and reduce the friction between the steel bar and the steel bar, the slide bar 52 translates and closes the upper end opening of the clamping groove 14 through the upper limit rod 4, while pushing the guide block 55 to push the roller assembly 6 to move up and lift the steel bar inside the clamping groove 14 upward, so that the steel bar is separated from the bottom of the clamping groove 14, avoiding wear to the clamping groove 14 when the steel bar positioning and clamping device moves corresponding to the steel bar; at the same time, the roller assembly 6 adjusts the sliding friction between the clamping groove 14 and the steel bar to the rolling friction between the roller assembly 6 and the steel bar, which can reduce the friction suffered by the steel bar; when the upper limit rod 4 is reset to make way for the steel bar in the clamping groove 14, the slide bar 52 drives the pushing guide block 55 to reset, and the roller assembly 6 is reset, and the steel bar is no longer lifted.

[0036] In some embodiments, the roller assembly 62 has a guide seat 63 fixedly arranged on the side of the support frame 1, a guide rod 64 is slidably arranged inside the guide seat 63 in the vertical direction, a roller bracket 62 is arranged above the guide seat 63, and a roller 61 is rotatably arranged inside the roller bracket 62 in the horizontal direction, the roller 61 is used to contact with the steel bars, the bottom of the roller bracket 62 is fixedly connected to the upper end of the guide rod 64, and a driving end 65 corresponding to the pushing guide block 55 is fixedly arranged at the bottom end of the guide rod 64 under the guide seat 63. When the sliding rod 52 moves, it drives the pushing guide block 55 to move, and the inclined surface of the pushing guide block 55 drives the driving end 65 to move upward, and the driving end 65 drives the guide rod 64 to move upward inside the guide seat 63, and the guide rod 64 drives the roller bracket 62 to move upward, and the steel bars inside the clamping groove 14 are lifted upward by the roller 61.

[0037] In some embodiments, a spring 66 is mounted on the outside of the guide rod 64 between the guide seat 63 and the driving end 65. The outer diameter of the driving end 65 is larger than the outer diameter of the guide rod 64. The driving end 65 can block the spring end on the outside of the guide rod 64. The bottom of the driving end 65 is provided with a rounded corner.

[0038] In some embodiments, the pushing guide block 55 has a bottom surface 551 and a top surface 553 that match the driving end 65, and a slope 552 is connected between the bottom surface 551 and the top surface 553. The top surface 553 is higher than the bottom surface 551, and there is a smooth transition between the top surface 553 and the bottom surface 551. When the sliding rod 52 moves, the slope 552 pushes the driving end 65 to gradually rise until it contacts the top surface 553, so that the roller assembly 62 lifts the steel bar upward.

[0039] In some embodiments, Figure 5As shown, a U-shaped groove 521 is provided along one side of the slide bar 52 close to the slide groove 51, and a convex strip 511 matching the U-shaped groove 521 is provided on one side of the slide groove 51 close to the slide bar 52. The convex strip 511 is slidably provided inside the U-shaped groove 521, and the convex strip 511 cooperates with the U-shaped groove 521 to realize sliding guidance between the slide groove 51 and the slide bar 52, and at the same time limit the slide groove 51 and the slide bar 52 in the vertical direction.

[0040] In some embodiments, Figure 6 As shown, a bidirectional steel bar bending processing equipment is disclosed, including a base frame 500 and a steel bar positioning clamping device 100 as described in any of the above items, a slide rail 200 is arranged along the base frame 500, two sets of bending machine heads 300 are arranged on the base frame 500, at least two sets of steel bar positioning clamping devices 100 are arranged between the two sets of bending machine heads 300, and the bottoms of the bending machine heads 300 and the steel bar positioning clamping devices 100 are both provided with a walking mechanism 400 that drives them to move on the top of the slide rail 200; the bidirectional steel bar bending processing equipment in this embodiment is used for longer steel bars During the bending process, in order to prevent the steel bars from falling and bending, the number of steel bar positioning and clamping devices can be appropriately increased, and the support points for the steel bars can be increased to prevent the steel bars from falling and bending, so as to ensure the accuracy of the bending position of the steel bars. During processing, the steel bar positioning and clamping device 100 can flexibly adjust its support position under the drive of the walking mechanism 400 to meet different support requirements; during the processing, the steel bar positioning and clamping device 100 can alternately release the steel bars to move on the slide rail 200, adjust its support position for the steel bars, and at the same time avoid interference with the position of the bending machine head 300.

[0041] As a specific implementation of the walking mechanism in the above embodiment, Figure 6 and 7 As shown, the walking mechanism 400 has a walking base plate 401 and a rack 405, the rack 405 is arranged on the top of the base frame 500 in parallel with the slide rail 200, a walking gear 404 meshing with the rack 405 is rotatably arranged on the walking base plate 401, a walking driving component 405 driving the walking gear 404 to rotate is arranged on the top of the walking base plate 401, a pulley matching with the slide rail 200 is arranged below the walking base plate, and the pulley 402 is rotatably arranged at the bottom of the walking base plate 401 through the pulley support plate 403, and the walking base plate The plate 401 is slidably connected to the slide rail 200 through the pulley 402, and the travel driving component 405 drives the travel gear 404 to rotate, and the travel gear 404 is meshed with the rack 405 to drive the travel mechanism 400 to move along the track; specifically, the travel driving component 405 has a reducer and a servo motor, the servo motor is transmission-connected to the input end of the reducer, and the output end of the reducer is transmission-connected to the travel gear 404, and the servo motor has high control accuracy and can accurately control the position of the travel mechanism 400 on the slide rail 200.

[0042] In the above embodiment, the bending head 300 is well known to those skilled in the art, so it will not be described in detail.

[0043] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0044] The above-mentioned embodiments only express some implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A steel bar positioning and clamping device, characterized in that: The invention comprises a support frame, wherein at least two clamping grooves are evenly arranged on the top of the support frame along a straight line, two clamping blocks are symmetrically arranged on both sides of the upper end of the clamping groove, the clamping blocks are rotatably connected to the support frame, and a clamping driving mechanism is arranged inside the support frame to drive the clamping blocks to rotate or reset to the corresponding clamping grooves to clamp or release the steel bars inside the clamping grooves; An upper limit rod is arranged on one side above the clamping groove, and a translation driving mechanism is arranged below the upper limit rod, and the translation driving mechanism is used to drive the upper limit rod to translate to the top of the clamping groove or reset to block or give way to the steel bars in the clamping groove.

2. The steel bar positioning and clamping device according to claim 1 is characterized in that: The clamping drive mechanism comprises a lifting plate arranged below the clamping block, a connecting rod is hinged on the top of the lifting plate, an end of the connecting rod facing away from the lifting plate is hinged to the clamping block, guide rods symmetrically arranged at the bottom of the lifting plate and slidably connected to the support frame in the vertical direction, and a lifting drive component for driving the lifting plate to move up and down is fixedly arranged on the support frame.

3. The steel bar positioning and clamping device according to claim 1 is characterized in that: The translation driving mechanism has a slide groove arranged horizontally on the side of the support frame, a slide rod is slidingly arranged inside the slide groove, a driving plate is vertically arranged on the end of the slide rod, and a translation driving component is fixedly arranged at one end of the support frame. The translation driving component drives the driving plate to drive the slide rod to slide reciprocatingly inside the slide groove, and one end of the upper limit rod is fixedly arranged on the top of the slide rod through a limit rod bracket.

4. The steel bar positioning and clamping device according to claim 2, characterized in that: A roller assembly is slidably arranged on the support frame below the clamping groove in the vertical direction; a pushing guide block is arranged on the top of the slide bar for pushing the roller assembly to move upward and lift the steel bars inside the clamping groove upward.

5. The steel bar positioning and clamping device according to claim 4 is characterized in that: The roller assembly comprises a guide seat fixedly arranged on the side of the support frame, a guide rod is slidably arranged inside the guide seat along the vertical direction, a roller bracket is arranged above the guide seat, and a roller is rotatably arranged inside the roller bracket along the horizontal direction, the bottom of the roller bracket is fixedly connected to the upper end of the guide rod, and a driving end corresponding to the pushing guide block is fixedly arranged at the bottom end of the guide rod below the guide seat.

6. The steel bar positioning and clamping device according to claim 5, characterized in that: A spring is sleeved on the outer side of the guide rod between the guide seat and the driving end, and a rounded corner is arranged at the bottom of the driving end.

7. The steel bar positioning and clamping device according to claim 5, characterized in that: The pushing guide block has a bottom surface and a top surface matching the driving end, and a slope surface is connected between the bottom surface and the top surface.

8. The steel bar positioning and clamping device according to claim 3 is characterized in that: A U-shaped groove is arranged along one side of the slide bar close to the slide slot, and a convex strip matching the U-shaped groove is arranged on one side of the slide slot close to the slide bar, and the convex strip is slidably arranged inside the U-shaped groove.

9. A bidirectional steel bar bending processing equipment, characterized in that: It comprises a base frame and a steel bar positioning and clamping device as claimed in any one of claims 1 to 7, wherein a slide rail is arranged along the base frame, two groups of bending machine heads are arranged on the base frame, at least two groups of steel bar positioning and clamping devices are arranged between the two groups of bending machine heads, and the bottom of the bending machine heads and the steel bar positioning and clamping devices are provided with a walking mechanism that drives them to move on the top of the slide rail.

10. The bidirectional steel bar bending processing equipment according to claim 9, characterized in that: The walking mechanism comprises a walking base plate and a rack, the rack is arranged on the top of the base frame in parallel with the slide rail, a walking gear meshing with the rack is rotatably arranged on the walking base plate, a walking driving component for driving the walking gear to rotate is arranged on the top of the walking base plate, a pulley matching the slide rail is arranged below the walking base plate, and the pulley is rotatably arranged on the bottom of the walking base plate through a pulley support plate.

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