A kind of bending tool for ladder guard cage

Abstract

The invention discloses a bending tool for a ladder guard cage, comprising a main supporting plate, a main bending assembly and side bending wheels, the main bending assembly and the side bending wheels are mounted on the main supporting plate, and the two side bending wheels are respectively located at the front and rear ends of the main bending assembly, the main bending assembly comprises an intermediate shaft rod and a plurality of bending wheels, the plurality of bending wheels are sequentially sleeved on the intermediate shaft rod, the intermediate shaft rod penetrates the main supporting plate and is slidably connected to the main supporting plate, the diameter of the bending wheel located above the main supporting plate is larger than the diameter of the bending wheel located below the main supporting plate, a large top plate is also installed on the top frame, the large top plate is located on one side of the main cylinder, an auxiliary cylinder 1 is installed at the bottom end of the large top plate, a large triangular plate is installed at the bottom end of the auxiliary cylinder 1, an intermediate rod 1 and a side intermediate rod 2 are slidably connected at the bottom end of the large triangular plate, the two side intermediate rods 2 are located on both sides of the intermediate rod 1, the intermediate rod 1 and the two side intermediate rods 2 are distributed in a triangle, and an intermediate circular arc pressing plate is installed at the bottom ends of the intermediate rod 1 and the two side intermediate rods 2.

Description

Technical Field

[0001] The invention belongs to the technical field of cage processing, and in particular relates to a ladder cage bending tool. Background Art

[0002] The ladder cage is an assembled light steel structure ladder, which consists of a handrail ladder, a straight ladder, a cage and connectors. It is suitable for all buildings that require maintenance ladders and safety ladders. It can be used in building maintenance and construction to play a safety protection role. The vertical ladder cage can protect workers or users from accidentally falling or falling from the ladder. It is an effective protective measure to enhance the stability of the ladder structure, provide additional support, and ensure that the ladder structure will not collapse or be damaged due to external forces during use, thereby improving work efficiency. At the same time, by reducing the incidence of accidents, the health and safety of users are protected. The standard specifications for ladder cages involve many aspects, including height, slope, steps, handrails, materials, installation, maintenance and precautions for use, etc. These must be strictly followed to ensure safety and efficiency of use.

[0003] For example, a Chinese invention patent document with the announcement number CN110681799B discloses a steel bar bending equipment, including a workbench, a support table, a connecting table, a lower die, a bending hydraulic cylinder and an upper die. The upper die is located directly above the lower die and also includes a support seat fixedly connected to one side of the workbench, a support shaft fixedly connected to the side of the support seat away from the workbench, a clamping mechanism arranged on the support shaft, a control mechanism arranged at the end of the support shaft away from the workbench, and a feeding mechanism arranged below the end of the support shaft away from the workbench. A lifting hydraulic cylinder is arranged at the bottom of the lower die for driving the lower die to move up and down. The steel bars are clamped by a number of clamping components on the clamping mechanism. The control mechanism simultaneously controls the feeding and unloading of the steel bars and pushes the clamping components to deliver the steel bars between the upper die and the lower die.

[0004] For example, a Chinese invention patent document with announcement number CN106180475B discloses a steel bar bending machine, including a base plate, a supporting device, a first fixing device, a second fixing device, a first leaning device, a second leaning device and a bracket device, a first supporting block and a first roller are provided on the base plate, the supporting device includes a first pad, a second supporting block, a first bending rod, a first supporting ring and a first cross bar, the first fixing device includes a first fixing block, a feed hopper, a second cross bar, a third cross bar, a first positioning block, a fourth cross bar, a first bracket and a first vertical rod, the second fixing device includes a first fixing plate, a fifth cross bar, a second vertical rod, a sixth cross bar, a third support block, a third vertical rod, a first spring, a second spring, a first leaning plate and a fourth vertical rod, the first leaning device includes a first cylinder, a first pushing rod, a first pushing block, a first pushing head, a third spring, a second bracket, a first fixing rod, a third bracket and a fourth bracket.

[0005] Conventional bending equipment is equipped with a structure that automatically adjusts the degree of bending. Although it can reduce some manpower consumption, the method adopted is to set the parameters of the bending structure and then process the workpiece. For bending of different diameters, the bending wheel needs to be replaced in time, and the specific bending effect needs to be tested on the workpiece after bending. When carrying out mass production and processing, it is impossible to test each workpiece, and sampling inspection is often used, resulting in the qualified rate of batch workpieces being measured inaccurately. Summary of the invention

[0006] In view of the above problems in the prior art, the object of the present invention is to provide a ladder cage bending tool to achieve simultaneous bending and monitoring, shorten the processing cycle, and ensure the qualified rate of finished products.

[0007] The present invention provides the following technical solutions:

[0008] A ladder cage bending tool comprises a main support plate, a main bending assembly and side bending wheels, wherein the main bending assembly and the side bending wheels are mounted on the main support plate, and the two side bending wheels are respectively located at the front and rear ends of the main bending assembly, and the main bending assembly comprises an intermediate shaft and a plurality of bending wheels, wherein the plurality of bending wheels are sequentially sleeved on the intermediate shaft, and the intermediate shaft passes through the main support plate and is slidably connected to the main support plate, and the diameter of the bending wheel located above the main support plate is greater than the diameter of the bending wheel located below the main support plate.

[0009] As a further technical solution, the multiple bending wheels sleeved on the intermediate shaft are, from top to bottom, an upper bending wheel, an intermediate bending wheel and a lower bending wheel, a through hole is opened on the main supporting plate, the intermediate shaft is located in the through hole, the diameter of the upper bending wheel is larger than the diameter of the through hole, the diameter of the lower bending wheel is smaller than the diameter of the through hole, and the intermediate bending wheel is slidably connected to the through hole.

[0010] As a further technical solution, a top frame is welded on the main support plate, a main cylinder is mounted on the top frame, and an output end of the main cylinder is connected to the top end of the intermediate shaft.

[0011] As a further technical solution, a cross bar is installed on the top frame, a cylinder slide groove is reserved in the cross bar, two bending cylinders are slidably connected in the cylinder slide groove, and the output end of the bending cylinder is connected to the side bending wheel.

[0012] As a further technical solution, an extension portion is installed on the side bending wheel, and a connecting rod is installed on the output end of the bending cylinder. The connecting rod runs through the extension portion, and the extension portion is provided with a plurality of arc-shaped cavities, which are symmetrically arranged in the extension portion. A plurality of square cavities are reserved in the connecting rod, and the positions of the square cavities correspond to the positions of the arc-shaped cavities. A spring plate is hingedly installed in the square cavity.

[0013] As a further technical solution, a semicircular groove and a plurality of transverse grooves are provided on the main support plate, the transverse grooves are connected to the semicircular grooves, and the side bending wheels are slidably connected to the transverse grooves.

[0014] As a further technical solution, the transverse groove consists of a vertical segment and an arc segment.

[0015] As a further technical solution, the central axis of the side bending wheel passes through the transverse groove and extends to the bottom of the main supporting plate. Gear 1 is sleeved on the central axis and is located under the main supporting plate. A screw motor is installed at the bottom end of the main supporting plate. A positioning screw is installed at the output end of the screw motor. A movable plate is threadedly connected to the positioning screw. A threaded through hole is provided on the movable plate. The positioning screw passes through the threaded through hole and is threadedly connected to the movable plate. Gear 3 is symmetrically and movably installed on the movable plate. Gear 3 is meshed with gear 1. Gear 2 is also sleeved on the shaft of gear 3. A meshing groove is provided in the movable plate. Gear 2 is located in the meshing groove and meshes with the toothed groove in the meshing groove.

[0016] As a further technical solution, a large top plate is also installed on the top frame, the large top plate is located on one side of the main cylinder, an auxiliary cylinder 1 is installed at the bottom end of the large top plate, a large triangular plate is installed at the bottom end of the auxiliary cylinder 1, an intermediate rod 1 and a side intermediate rod 2 are slidably connected to the bottom end of the large triangular plate, the two side intermediate rods 2 are located on both sides of the intermediate rod 1, the intermediate rod 1 and the two side intermediate rods 2 are distributed in a triangle, and an intermediate arc pressure plate is installed at the bottom ends of the intermediate rod 1 and the two side intermediate rods 2.

[0017] As a further technical solution, an auxiliary cylinder 2 is symmetrically installed at the bottom end of the large top plate. The two auxiliary cylinders 2 and the auxiliary cylinder 1 are distributed in a triangle at the bottom end of the large top plate. A small triangular plate is installed at the bottom end of the auxiliary cylinder 2. An intermediate rod 2 and a side intermediate rod 2 are distributed and installed on the three corners of the small triangular plate. The two side intermediate rods 2 are located on both sides of the intermediate rod 2. End arc pressure plates are installed at the bottom ends of the side intermediate rod 2 and the intermediate rod 2.

[0018] The beneficial effects of the present invention are:

[0019] Multiple bending wheels of different diameters are installed on the intermediate shaft. The diameter of the bent workpiece can be obtained according to the diameter of the bending wheel used during bending. When the bending sizes of the workpieces are different, there is no need to replace the main bending wheel. The operation is simple and the processing steps are saved.

[0020] A plurality of transverse grooves are arranged on the main support plate to adjust the distance between the side bending wheel and the main bending assembly, so as to bend workpieces of different diameters. The transverse grooves are composed of vertical sections and arc sections, so as to realize the semicircular bending of the workpiece, and further bend the workpiece that has completed the semicircular bending. The stability is higher, the deformation is not easy, and it is convenient to install the steps of different lengths of the ladder. At the same time, the side bending wheel and the bending cylinder are detachably connected, so as to cooperate to further bend the workpiece.

[0021] A large top plate is installed on the top frame, a large triangular plate and a small triangular plate are installed on the large top plate, a middle arc pressure plate is installed on the large triangular plate, and an end arc pressure plate is installed on the small triangular plate to prevent the workpiece from changing its upper and lower positions during bending, improve the bending quality of the workpiece, reduce the correction process, and greatly shorten the bending process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a schematic diagram of the overall axonometric structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the axial side structure of the main support plate of the present invention;

[0025] Figure 3 It is a schematic diagram of the axial structure of the main bending assembly of the present invention;

[0026] Figure 4 is a schematic cross-sectional structural diagram of the extension portion of the present invention;

[0027] Figure 5 It is a position relationship diagram of the initial state of the side bending wheel and the main bending assembly of the present invention;

[0028] Figure 6 It is a positional relationship diagram of the bending wheel at the rear side of the workpiece bending circle and the main bending assembly of the present invention;

[0029] Figure 7 It is a bottom view structural schematic diagram of the main support plate of the present invention;

[0030] Figure 8 It is a schematic diagram of the cross-sectional structure of the large top plate of the present invention.

[0031] The markings in the figure are: 1. main support plate; 2. cross bar; 3. bending cylinder; 4. main cylinder; 5. top frame; 6. middle bending wheel; 7. side bending wheel; 8. main bending assembly; 9. upper bending wheel; 10. transverse groove; 11. main bending assembly; 12. lower bending wheel; 13. intermediate shaft; 14. semicircular groove; 15. cylinder slide groove; 16. extension; 17. vertical section; 18. arc section; 19. arc cavity; 20. spring plate; 21. square cavity; 2 2. Connecting rod; 23. Engaging groove; 24. Gear three; 25. Gear two; 26. Gear one; 27. Adjusting screw; 28. Screw motor; 29. ​​Moving plate; 30. Threaded through hole; 31. Large top plate; 32. Intermediate rod one; 33. Large triangular plate; 34. Intermediate circular arc pressure plate; 35. Auxiliary cylinder one; 36. End circular arc pressure plate; 37. Auxiliary cylinder two; 38. Small triangular plate; 39. Side intermediate rod two; 40. Intermediate rod two; 42. Side intermediate rod one. DETAILED DESCRIPTION

[0032] like Figure 1 As shown, the present invention provides a ladder cage bending tool, including a main supporting plate 1, a main bending assembly 8 and a side bending wheel 7, the main bending assembly 8 and the side bending wheel 7 are installed on the main supporting plate 1, and the two side bending wheels 7 are respectively located at the front and rear ends of the main bending assembly 8, a top frame 5 is welded on the main supporting plate 1, a cross bar 2 is installed on the top frame 5, two bending cylinders 3 are installed on the cross bar 2, and the output end of the bending cylinder 3 is connected to the side bending wheel 7.

[0033] During specific operation, the workpiece is located between the two side bending wheels 7 and the main bending assembly 8, the position of the main bending assembly 8 remains unchanged, and the side bending wheels 7 are pushed toward the direction of the main bending assembly 8 by the bending cylinder 3. The bending wheels 7 and the main bending assembly 8 squeeze the workpiece, thereby realizing the bending process of the workpiece.

[0034] Embodiment 1

[0035] like Figure 1 As shown, a main cylinder 4 is installed on the top frame 5, and the main cylinder 4 is connected to a main bending assembly 8. The main bending assembly 8 includes an intermediate shaft 13 and a plurality of bending wheels. The output end of the main cylinder 4 is connected to the top end of the intermediate shaft 13. The plurality of bending wheels are sequentially sleeved on the intermediate shaft 13. The intermediate shaft 13 passes through the main supporting plate 1 and is slidably connected to the main supporting plate 1. The diameter of the bending wheel located above the main supporting plate 1 is larger than the diameter of the bending wheel located below the main supporting plate 1. A plurality of bending wheels of different diameters are installed on the intermediate shaft 13. The diameter of the bent workpiece can be obtained according to the diameter of the bending wheel used during bending. When the bending sizes of the workpieces are different, there is no need to replace the main bending wheel. The operation is simple and saves processing steps.

[0036] Specifically, Figure 2 and Figure 3As shown, the multiple bending wheels mounted on the intermediate shaft 13 are, from top to bottom, an upper bending wheel 9, an intermediate bending wheel 6 and a lower bending wheel 12. A through hole is opened on the main supporting plate 1, and the intermediate shaft 13 is located in the through hole. The diameter of the upper bending wheel 9 is larger than the diameter of the through hole, and the diameter of the lower bending wheel 12 is smaller than the diameter of the through hole. The intermediate bending wheel 6 is slidably connected to the through hole. The bottom end face of the bending wheel used in the specific bending is flush with the top end face of the main supporting plate 1, and the position of the bending wheel on the intermediate shaft 13 is controlled by the main cylinder 4.

[0037] When bending, the corresponding bending wheel is selected according to the bending diameter of the workpiece. Specifically, if the upper bending wheel 9 is selected, the main cylinder 4 pushes the intermediate shaft 13 downward so that the bottom end surface of the upper bending wheel 9 is flush with the top end surface of the main supporting plate 1, and the position of the upper bending wheel 9 is fixed. The bending cylinder 3 pushes the side bending wheel 7 in the direction of the upper bending wheel 9, so that the workpiece fits tightly against the outer surface of the upper bending wheel 9 to complete the bending operation. When the tooling is installed on the outer machine tool, in order to keep the intermediate shaft 13 stable when the cylinder 4 pushes the intermediate shaft 13 up and down, a connecting sleeve is installed at the bottom of the intermediate shaft 13, and the connecting sleeve is fixedly connected to the outer machine tool, and the intermediate shaft 13 and the connecting sleeve are slidably connected (the above is the prior art and will not be repeated here).

[0038] Furthermore, in order to adjust the distance between the side bending wheel 7 and the main bending assembly 8, as shown in FIG. Figure 4 As shown, a semicircular groove 14 and a plurality of transverse grooves 10 are provided on the main support plate 1, the transverse grooves 10 and the semicircular grooves 14 are connected, the side bending wheel 7 is slidably connected to the transverse groove 10, and the side bending wheel 7 is installed in the transverse groove 10 by a detachable connection. The workpiece moves along the semicircular groove 14, and the radius of the semicircular groove 14 is smaller than the radius of the workpiece, so that the side bending wheel 7 can smoothly push the workpiece. In order to cooperate with the side bending wheel 7 installed in different transverse grooves 10, as shown in FIG. Figure 3 As shown, a cylinder slot 15 is reserved in the cross bar 2, and the two bending cylinders 3 are slidably connected to the cylinder slot 15. During specific operation, the position of the side bending wheel 7 is first determined, and the bending cylinder 3 moves in the cylinder slot 15, so that the bending cylinder 3 and the side bending wheel 7 move to the determined position.

[0039] Embodiment 2

[0040] The above embodiment 1 achieves the semicircular bending of the workpiece. In order to further bend the workpiece, as shown in FIG. Figure 5 As shown, the transverse groove 10 is composed of a vertical section 17 and an arc section 18. Figure 6As shown, when the side bending wheel 7 moves to the lowermost limit position of the vertical section 17, the semicircular bending in Example 1 is completed, and when the side bending wheel 7 moves toward the arc section 18, the workpiece can be further bent, so that the bending area of ​​the workpiece is larger, the stability is higher, and it is not easy to deform, which is convenient for the installation of steps of different lengths of the ladder.

[0041] Specifically, Figure 7 As shown, the central axis of the side bending wheel 7 passes through the transverse groove 10 and extends to the bottom of the main support plate 1. In this embodiment, the transverse groove 10 is a through hole, and a gear 26 is sleeved on the central axis. The gear 26 is located below the main support plate 1. A screw motor 28 is installed at the bottom end of the main support plate 1. An adjusting screw 27 is installed at the output end of the screw motor 28. A moving plate 29 is threadedly connected to the adjusting screw 27. A threaded through hole 30 is opened on the moving plate 29. The adjusting screw 27 passes through the threaded through hole 30 and is threadedly connected thereto. The screw motor 28 drives the adjusting screw 27. When rotating, the movable plate 28 makes a linear motion along the adjusting screw 27, and the movable plate 29 is symmetrically and movably mounted with gear three 24, which meshes with gear one 26. When gear three 24 rotates, gear one 26 rotates, and gear two 25 is also sleeved on the shaft of gear three 24. A meshing groove 23 is provided in the movable plate 29, and gear two 25 is located in the meshing groove 23. Gear two 25 meshes with the toothed groove in the meshing groove 23. Through the coordinated action of gear two 25, the meshing groove 23 and the movable plate 29, the side bending wheel 7 is moved along the arc segment 18.

[0042] Furthermore, if Figure 4 As shown, a detachable connection between the side bending wheel 7 and the bending cylinder 3 is realized. At the same time, in order to cooperate with further bending of the workpiece, an extension portion 16 is installed on the side bending wheel 7, and a connecting rod 22 is installed at the output end of the bending cylinder 3. The connecting rod 22 passes through the extension portion 16. The extension portion 16 is provided with a plurality of arc-shaped cavities 19, and the arc-shaped cavities 19 are symmetrically arranged in the extension portion 16. A plurality of square cavities 21 are reserved in the connecting rod 22. The positions of the square cavities 21 correspond to the positions of the arc-shaped cavities 19. A spring plate 20 is hingedly installed in the square cavity 19. When the bending cylinder 3 pushes the extension portion 16 to the extreme position, the semicircular bending of the workpiece is completed, and then the extension portion 16 continues to slide along the bending cylinder 3 through further movement of the side bending wheel 7.

[0043] The screw motor 28 drives the adjustment screw 27 to rotate, and the movable plate 29 moves linearly downward. At the same time, the meshing groove 23 moves downward, causing the gear 25 to rotate and then rotate in the meshing groove 23. At this time, since the gear 25 and the gear 3 24 are coaxial, the gear 3 24 rotates and transmits power to the gear 1 26. Through the meshing of the top outer surface of the gear 1 26 and the arc segment 18, the side bending wheel 7 moves along the arc segment 18, thereby completing a further bending action. While the side bending wheel 7 moves, the extension part 16 squeezes the spring plate 20, causing the spring plate 20 to rotate into the square cavity 21, thereby completing the further sliding of the extension part 16 relative to the bending cylinder 3. When the side bending wheel 7 is reset, the extension part 16 moves in the opposite direction, causing the spring plate 20 to return to the arc cavity 19 again by relying on its own elasticity, thereby completing the locking of the extension part 16 and the output end of the bending cylinder 3.

[0044] Embodiment 3

[0045] On the basis of the above-mentioned second embodiment, in order to prevent the upper and lower positions of the workpiece from changing during bending, thereby affecting the bending quality of the workpiece, as shown in FIG. Figure 8 As shown, a large top plate 31 is also installed on the top frame 5, and the large top plate 31 is located on one side of the main cylinder 4. An auxiliary cylinder 35 is installed at the bottom end of the large top plate 31, and a large triangular plate 33 is installed at the bottom end of the auxiliary cylinder 35. The bottom end of the large triangular plate 33 is slidably connected with an intermediate rod 1 32 and a side intermediate rod 2 42. The two side intermediate rods 2 42 are located on both sides of the intermediate rod 1 32. The intermediate rod 1 32 and the two side intermediate rods 2 42 are distributed in a triangle, and an intermediate arc pressure plate 34 is installed at the bottom ends of the intermediate rod 1 32 and the two side intermediate rods 2 42.

[0046] Specifically, while the workpiece is being bent, the auxiliary cylinder 25 pushes down the large triangular plate 33, so that the middle arc-shaped pressing plate 34 presses the workpiece downward, thereby preventing the workpiece from being deformed upward while being subjected to the bending force.

[0047] Furthermore, an auxiliary cylinder 2 37 is symmetrically installed at the bottom end of the large top plate 31. The two auxiliary cylinders 2 37 and the auxiliary cylinder 1 35 are distributed in a triangle at the bottom end of the large top plate 31. A small triangular plate 38 is installed at the bottom end of the auxiliary cylinder 2 37. An intermediate rod 2 40 and a side intermediate rod 2 39 are installed on the three corners of the small triangular plate 38. The two side intermediate rods 2 39 are located on both sides of the intermediate rod 2 40. End arc pressure plates 36 are installed at the bottom ends of the side intermediate rods 2 39 and the intermediate rods 2 40.

[0048] Specifically, the auxiliary cylinder 2 37 pushes down the small triangular plate 38, and the end arc-shaped pressing plate 36 presses the workpiece downward, thereby effectively preventing the workpiece from being deformed and improving the bending quality of the workpiece.

[0049] The working principle of the present invention when working is:

[0050] Bending a semicircular arc of a workpiece:

[0051] Step 1: Select the corresponding bending wheel according to the bending diameter of the workpiece. Take the upper bending wheel 9 as an example. The main cylinder 4 pushes the intermediate shaft 13 downward so that the bottom end surface of the upper bending wheel 9 is flush with the top end surface of the main support plate 1, and the position of the upper bending wheel 9 is fixed;

[0052] Step 2: The bending cylinder 3 pushes the side bending wheel 7 toward the direction of the upper bending wheel 9, so that the workpiece fits tightly against the outer surface of the upper bending wheel 9;

[0053] Step 3: The auxiliary cylinder 1 25 pushes down the large triangular plate 33, so that the middle arc-shaped pressing plate 34 presses the workpiece downward until the bending process of the workpiece is completed.

[0054] Further bending of the workpiece that has completed the semicircular arc bending:

[0055] Step 1: Select the corresponding bending wheel according to the bending diameter of the workpiece. Take the upper bending wheel 9 as an example. The main cylinder 4 pushes the intermediate shaft 13 downward so that the bottom end surface of the upper bending wheel 9 is flush with the top end surface of the main support plate 1, and the position of the upper bending wheel 9 is fixed;

[0056] Step 2: The bending cylinder 3 pushes the side bending wheel 7 toward the direction of the upper bending wheel 9, so that the workpiece fits tightly against the outer surface of the upper bending wheel 9;

[0057] Step 3: The screw motor 28 drives the adjustment screw 27 to rotate, and the moving plate 29 moves linearly downward. At the same time, the meshing groove 23 moves downward, so that the gear 2 25 rotates and rotates in the meshing groove 23, and the gear 3 24 rotates and transmits power to the gear 1 26. Through the meshing of the top outer surface of the gear 1 26 and the arc segment 18, the side bending wheel 7 moves along the arc segment 18. When the side bending wheel 7 moves, the extension part 16 squeezes the spring plate 20, so that the spring plate 20 rotates into the square cavity 21, and the extension part 16 can complete the further sliding of the relative bending cylinder 3;

[0058] Steps: Auxiliary cylinder 1 25 pushes down the large triangular plate 33, and auxiliary cylinder 2 37 pushes down the small triangular plate 38, so that the middle arc pressure plate 34 and the end arc pressure plate 36 press the workpiece downward until the bending process of the workpiece is completed.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A ladder guard cage bending tool, characterized in that: The invention comprises a main support plate (1), a main bending assembly (8) and a side bending wheel (7), wherein the main bending assembly (8) and the side bending wheel (7) are mounted on the main support plate (1), and the two side bending wheels (7) are respectively located at the front and rear ends of the main bending assembly (8), and the main bending assembly (8) comprises an intermediate shaft (13) and a plurality of bending wheels, wherein the plurality of bending wheels are sequentially sleeved on the intermediate shaft (13), and the intermediate shaft (13) passes through the main support plate (1) and is slidably connected to the main support plate (1), and the diameter of the bending wheel located above the main support plate (1) is greater than the diameter of the bending wheel located below the main support plate (1).

2. The ladder cage bending tool according to claim 1 is characterized in that: The multiple bending wheels sleeved on the intermediate shaft (13) are, from top to bottom, an upper bending wheel (9), an intermediate bending wheel (6) and a lower bending wheel (12); a through hole is provided on the main support plate (1); the intermediate shaft (13) is located in the through hole; the diameter of the upper bending wheel (9) is larger than the diameter of the through hole; the diameter of the lower bending wheel (12) is smaller than the diameter of the through hole; the intermediate bending wheel (6) is slidably connected to the through hole.

3. The ladder cage bending tool according to claim 1 or 2, characterized in that: A top frame (5) is welded on the main support plate (1), a main cylinder (4) is mounted on the top frame (5), and an output end of the main cylinder (4) is connected to the top end of the intermediate shaft (13).

4. The ladder cage bending tool according to claim 3 is characterized in that: A cross bar (2) is installed on the top frame (5), a cylinder slide groove (15) is reserved in the cross bar (2), two bending cylinders (3) are slidably connected in the cylinder slide groove (15), and the output end of the bending cylinder (3) is connected to the side bending wheel (7).

5. The ladder cage bending tool according to claim 4 is characterized in that: An extension part (16) is installed on the side bending wheel (7), a connecting rod (22) is installed on the output end of the bending cylinder (3), the connecting rod (22) passes through the extension part (16), the extension part (16) is provided with a plurality of arc-shaped concave cavities (19), the arc-shaped concave cavities (19) are symmetrically arranged in the extension part (16), a plurality of square cavities (21) are reserved in the connecting rod (22), the positions of the square cavities (21) correspond to the positions of the arc-shaped concave cavities (19), and a spring plate (20) is hingedly installed in the square cavity (19).

6. The ladder cage bending tool according to claim 1, characterized in that: The main support plate (1) is provided with a semicircular groove (14) and a plurality of transverse grooves (10), the transverse grooves (10) are connected to the semicircular groove (14), and the side bending wheels (7) are slidably connected to the transverse grooves (10).

7. The ladder cage bending tool according to claim 6, characterized in that: The transverse groove (10) consists of a vertical section (17) and a circular arc section (18).

8. The ladder cage bending tool according to claim 7, characterized in that: The central axis of the side bending wheel (7) passes through the transverse groove (10) and extends to the bottom of the main support plate (1). A gear (26) is sleeved on the central axis. The gear (26) is located below the main support plate (1). A screw motor (28) is installed at the bottom end of the main support plate (1). An adjusting screw (27) is installed at the output end of the screw motor (28). A movable plate (29) is threadedly connected to the adjusting screw (27). A threaded through hole ( 30), the adjusting screw rod (27) passes through the threaded through hole (30) and is threadedly connected thereto, a gear three (24) is symmetrically and movably mounted on the movable plate (29), the gear three (24) is meshed with the gear one (26), a gear two (25) is sleeved on the shaft of the gear three (24), a meshing groove (23) is provided in the movable plate (29), the gear two (25) is located in the meshing groove (23), and the gear two (25) is meshed with the toothed groove in the meshing groove (23).

9. The ladder cage bending tool according to claim 4, characterized in that: A large top plate (31) is also installed on the top frame (5), and the large top plate (31) is located on one side of the main cylinder (4). An auxiliary cylinder 1 (35) is installed at the bottom of the large top plate (31), and a large triangular plate (33) is installed at the bottom of the auxiliary cylinder 1 (35). The bottom of the large triangular plate (33) is slidably connected with an intermediate rod 1 (32) and a side intermediate rod 2 (42). The two side intermediate rods 2 (42) are located on both sides of the intermediate rod 1 (32). The intermediate rod 1 (32) and the two side intermediate rods 2 (42) are distributed in a triangular shape. The bottom ends of the intermediate rod 1 (32) and the two side intermediate rods 2 (42) are installed with intermediate circular arc pressure plates (34).

10. The ladder cage bending tool according to claim 9, characterized in that: Auxiliary cylinders 2 (37) are symmetrically mounted at the bottom of the large top plate (31). The two auxiliary cylinders 2 (37) and the auxiliary cylinder 1 (35) are distributed in a triangular shape at the bottom of the large top plate (31). A small triangular plate (38) is mounted at the bottom of the auxiliary cylinders 2 (37). Middle rods 2 (40) and side middle rods 2 (39) are distributed and mounted on the three corners of the small triangular plate (38). The two side middle rods 2 (39) are located on both sides of the middle rod 2 (40). End arc pressure plates (36) are mounted at the bottom of the side middle rods 2 (39) and the middle rods 2 (40).

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