U-shaped steel deforming support fast correction cold extrusion repair die

Abstract

The utility model discloses a kind of U-shaped steel deformed support quick correction cold extrusion repair mould, it is related to metal stamping equipment field, including hydraulic workstation and installing on hydraulic workstation respectively for shaping and straightening operation of U-shaped steel deformed support shaping module and straightening module;Shaping module includes leg beam shaping module and arc arch beam shaping module, straightening module includes leg beam straightening module and arc arch beam straightening module.The utility model is corrected by the shaping and straightening tool design of modularization, can be quickly completed on one equipment leg beam bending, arch beam deformation and so on Multiple typical defects correction, effectively promote repair efficiency and quality, and reduce equipment cost and maintenance difficulty.

Description

Technical Field

[0001] This utility model relates to the field of metal stamping equipment, and in particular to a cold extrusion repair mold for rapid correction of U-shaped steel deformation brackets. Background Technology

[0002] In tunnel support engineering, U-shaped steel supports are widely used due to their good load-bearing capacity and compressibility. However, under complex geological conditions underground, the supports often undergo plastic deformation during use, such as leg beam bending, arch beam deformation, and local torsion, leading to a decline in their support performance and seriously affecting mine safety production. Currently, the repair of deformed supports is mostly carried out by hot straightening or replacement with new parts. Hot straightening has problems such as complex processes, high energy consumption, and easy alteration of material properties, while direct replacement is costly and wasteful of resources.

[0003] In the existing technology, there are some cold straightening and repair methods and devices, but most of them are single-function and can only correct a certain type of deformation of the support. For example, they can only deal with the bending of the straight rod section or only roughly adjust the curvature of the arch. For multiple complex deformations that exist at the same time, such as the bending of the leg beam in the Y direction accompanied by the warping in the X direction, or the local twisting of the arch beam combined with the curvature distortion, there is a lack of integrated repair methods. It is necessary to complete the repair in multiple processes on different equipment, which is cumbersome and inefficient.

[0004] Therefore, how to develop a cold extrusion repair mold for rapid correction of U-shaped steel deformation brackets, and through modular shaping and straightening tool design, be able to quickly complete the correction of various typical defects such as leg beam bending and arch beam deformation on a single machine, effectively improving repair efficiency and quality, and reducing equipment costs and maintenance difficulty, has become a technical problem that urgently needs to be solved by people in this field. Utility Model Content

[0005] The purpose of this invention is to provide a cold extrusion repair mold for rapid correction of U-shaped steel deformed brackets. Through modular shaping and straightening tool design, it can quickly complete the correction of various typical defects such as leg beam bending and arch beam deformation on one machine, effectively improving repair efficiency and quality, and reducing equipment costs and maintenance difficulty.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This utility model discloses a cold extrusion repair mold for rapid correction of U-shaped steel deformed brackets, including a hydraulic worktable and a shaping module and a straightening module installed on the hydraulic worktable for shaping and straightening operations on the U-shaped steel deformed brackets, respectively. The hydraulic worktable includes a frame, a hydraulic station, a hydraulic cylinder, an inner wall workpiece forming support plate, and a workpiece sliding roller. The frame has a recessed work platform. The hydraulic station is installed on one side of the top area of ​​the frame not occupied by the work platform. The hydraulic cylinder is arranged inside the housing of the work platform and is located at the center of the side closest to the hydraulic station. The hydraulic station includes a cylinder return pipeline and a gear booster pump located in its rear housing. A motor and a manual operating valve assembly are also installed on the top of the frame. The cylinder return pipeline of the hydraulic station is connected to the inlet pipe of the hydraulic cylinder via hydraulic lines and connectors. This inlet pipe connects to the operating valve assembly, which in turn connects to the cylinder. The inlet and outlet ports of the manual operating valve assembly are connected to the workpiece via hydraulic lines. The hydraulic station's oil circuit interface is connected, the motor's output end is connected to the gear booster pump, and the work platform's feed side and discharge side are both equipped with concave-shaped outer wall workpiece shaping support plates, which, together with the frame, enclose the work platform. Two inner wall workpiece shaping support plates are respectively installed on the left and right sides of the top of the work platform, and the height of the inner wall workpiece shaping support plates is the same as the height of the outer wall workpiece shaping support plates. Two workpiece sliding rollers are radially rotatably connected to the top of the work platform and are respectively located in two groove frames enclosed by the outer wall workpiece shaping support plates and the inner wall workpiece shaping support plates. An n-shaped steel pad is snapped onto the end of the outer wall workpiece shaping support plate away from the hydraulic cylinder. The shaping module includes a leg beam shaping module and an arc arch beam shaping module, and the straightening module includes a leg beam straightening module and an arc arch beam straightening module.

[0007] Preferably, the top height of the workpiece sliding roller is greater than the top height of the outer wall workpiece shaping support plate.

[0008] Preferably, the telescopic end of the hydraulic cylinder is provided with a square punch steel module for sleeve connection with the shaping module or straightening module, and the top of the square punch steel module is provided with a limit screw hole.

[0009] Preferably, the leg beam shaping module includes a leg beam shaping punch, a first square ring retaining mold sleeve, and a leg beam shaping die. The leg beam shaping punch is welded to the first square ring retaining mold sleeve, and the leg beam shaping punch is sleeved and connected to the square punch steel module through the first square ring retaining mold sleeve. A first limiting bolt is vertically slidably connected to the top of the first square ring retaining mold sleeve, and the first limiting bolt is threadedly connected to a first limiting nut welded to the top of the first square ring retaining mold sleeve. The bottom of the first limiting bolt is used for positioning and fastening connection with the limiting screw hole. The leg beam shaping die overlaps and is placed on the top of the n-shaped steel pad, and the length of the leg beam shaping die is greater than the length of the leg beam shaping punch.

[0010] Preferably, the leg beam straightening module includes an extrusion support plate, a leg beam straightening insert support mold, and a leg beam shaping movable extrusion module. The extrusion support plate is overlapped and placed on top of the n-shaped steel pad. The leg beam straightening insert support mold has fitting holes that match the shape of the leg beam. Two leg beam straightening insert support molds are fitted onto the leg beam to be straightened through the fitting holes at intervals. One side of the leg beam straightening insert support mold abuts against the extrusion support plate. The leg beam shaping movable extrusion module is placed on top of the working platform, and one side of the leg beam shaping movable extrusion module has a limiting groove that matches the shape of the leg beam sidewall. The other side of the leg beam shaping movable extrusion module is used to abut against the end of the square punch steel module.

[0011] Preferably, the arch beam shaping module includes an arch beam shaping die, a second square ring retaining die sleeve, and an arch beam shaping punch. The arch beam shaping die is welded to the second square ring retaining die sleeve, and the arch beam shaping die is fitted onto the square punch steel module through the second square ring retaining die sleeve. A second limiting bolt is vertically slidably connected to the top of the second square ring retaining die sleeve, and the second limiting bolt is threadedly connected to a second limiting nut welded to the top of the second square ring retaining die sleeve. The bottom of the second limiting bolt is used for positioning and fastening connection with the limiting screw hole. A rectangular base is welded to the bottom of the arch beam shaping punch, and the arch beam shaping punch is placed on top of the n-shaped steel pad block by overlapping the rectangular base. The length of the arch beam shaping die is greater than the length of the arch beam shaping punch.

[0012] Preferably, the arc-shaped arch beam straightening module includes an arch beam straightening punch, a third-party shaped ring fixing mold sleeve, and an arch beam limiting die. The arch beam straightening punch is welded to the third-party shaped ring fixing mold sleeve, and the arch beam straightening punch is fitted onto the square punch steel module through the third-party shaped ring fixing mold sleeve. A third limiting bolt is vertically slidably connected to the top of the third-party shaped ring fixing mold sleeve, and the third limiting bolt is threadedly connected to a third limiting nut welded to the top of the third-party shaped ring fixing mold sleeve. The bottom of the third limiting bolt is used for positioning and fastening connection with the limiting screw hole. The arch beam limiting die overlaps the top of the n-shaped steel pad, and the length of the arch beam limiting die is greater than the length of the arch beam straightening punch.

[0013] Compared with the prior art, the beneficial technical effects of this utility model are as follows: This utility model discloses a cold extrusion repair mold for rapid correction of U-shaped steel deformed brackets. Through modular shaping and straightening tool design, it integrates special repair functions for leg beams and arch beams. It can quickly correct various typical deformations of the bracket on a single hydraulic workbench, effectively solving the problems of cumbersome operation, low efficiency and repeated positioning errors caused by multi-equipment sequential repair, and significantly improving the overall efficiency and accuracy of repair work. Meanwhile, this utility model adopts a modular mold group that can be quickly replaced, combined with a unified hydraulic power and a nested assembly structure. It can flexibly select quick-install shaping module or straightening module according to the deformation type. It is not only easy to operate and quick to switch, reducing the complexity of the equipment and the cost of use, but also gradually restores the shape of the deformed part through cold extrusion, avoiding the adverse effects of hot straightening on the material properties, which is conducive to maintaining the original mechanical properties and support reliability of the support. In addition, the roller mechanism on the workbench significantly reduces the frictional resistance when moving heavy supports, thus reducing the labor intensity of operation; while the limit plug-in and three-point pressurization structures used in each module further ensure the stability of the force application process and the accuracy of the shape correction, providing practical and reliable equipment support for the rapid repair, reuse and safe production of supports. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the hydraulic worktable structure for a U-shaped steel deformation bracket for rapid correction and cold extrusion repair of a mold. Figure 1 ; Figure 2 This is a schematic diagram of the installation structure of the arc-shaped arch beam straightening module and the hydraulic workbench of this utility model; Figure 3 This is a structural schematic diagram of the arc-shaped arch beam straightening module of this utility model; Figure 4 This is a schematic diagram of the installation structure of the arc-shaped arch beam shaping module and the hydraulic worktable of this utility model; Figure 5 This is a schematic diagram of the arc-shaped arch beam shaping module of this utility model; Figure 6 This is a schematic diagram of the installation structure of the leg beam straightening module and the hydraulic worktable of this utility model; Figure 7 This is a schematic diagram of the structure of the extrusion pad of this utility model; Figure 8 This is a schematic diagram of the structure of the fixed limiting block and the movable extrusion block of this utility model; Figure 9 This is a schematic diagram of the installation structure of the leg beam shaping module and the hydraulic worktable of this utility model; Figure 10 This is a structural schematic diagram of the leg beam shaping module of this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1. Hydraulic worktable; 11. Frame; 12. Hydraulic station; 13. Hydraulic cylinder; 131. Square punch steel module; 132. Limiting screw hole; 14. Work platform; 15. Inner wall workpiece forming support plate; 16. Workpiece sliding roller; 17. Outer wall workpiece forming support plate; 18. N-shaped steel pad block; 2. Leg beam forming module; 21. Leg beam forming punch; 22. First square ring fixing die sleeve; 23. First limiting bolt; 24. Leg beam forming die; 25. First limiting nut; 3. Arc-shaped arch beam forming module; 31 1. Arch beam shaping die; 32. Second square ring fixing die sleeve; 33. Second limiting bolt; 34. Arch beam shaping punch; 35. Second limiting nut; 36. Rectangular base; 4. Leg beam straightening module; 41. Extrusion support plate; 42. Leg beam straightening insert support die; 421. Insertion hole; 43. Leg beam shaping movable extrusion module; 431. Limiting groove; 5. Arc-shaped arch beam straightening module; 51. Arch beam straightening punch; 52. Third square ring fixing die sleeve; 53. Third limiting bolt; 54. Arch beam limiting die; 55. Third limiting nut; 6. Leg beam. Detailed Implementation

[0017] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0018] like Figure 1-10 As shown, a cold extrusion repair mold for rapid straightening of U-shaped steel deformed brackets includes a hydraulic worktable 1 and a straightening module and a straightening module installed on the hydraulic worktable 1 for shaping and straightening operations on the U-shaped steel deformed brackets, respectively. The hydraulic workbench 1 includes a frame 11, a hydraulic station 12, a hydraulic cylinder 13, an inner wall workpiece forming support plate 15, and a workpiece sliding roller 16. The frame 11 has a recessed work platform 14. The hydraulic station 12 is installed on one side of the top area of ​​the frame 11 not occupied by the work platform 14. The hydraulic cylinder 13 is arranged inside the housing of the work platform 14 and is located at the center of the side closest to the hydraulic station 12. The hydraulic station 12 includes a cylinder return fluid pipeline and a gear booster pump located in its rear housing. A motor and a manual operating valve assembly are also installed on the top of the frame 11. The cylinder return fluid pipeline of the hydraulic station 12 is connected to the inlet pipe of the hydraulic cylinder 13 via hydraulic pipelines and connectors. This inlet pipe connects to the operating valve assembly, which in turn connects to the cylinder. The inlet and outlet ports of the manual operating valve assembly are connected to the corresponding interfaces of the hydraulic station 12 via hydraulic pipelines. The output end of the motor is connected to the gear booster pump and the flow direction of the hydraulic oil is controlled by the manual operation valve group to realize the supply and return of hydraulic oil. The feed side and the discharge side of the working platform 14 are provided with concave outer wall workpiece shaping support plates 17, which are arranged in conjunction with the frame 11 to surround the working platform 14. Two inner wall workpiece shaping support plates 15 are respectively installed on the left and right sides of the top of the working platform 14, and the height of the inner wall workpiece shaping support plates 15 is the same as the height of the outer wall workpiece shaping support plates 17. Two workpiece sliding rollers 16 are radially rotatably connected to the top of the working platform 14 and are respectively located in the two groove frames surrounded by the outer wall workpiece shaping support plates 17 and the inner wall workpiece shaping support plates 15. An n-shaped steel pad block 18 is snapped onto the end of the outer wall workpiece shaping support plate 17 away from the hydraulic cylinder 13. The shaping module includes a leg beam shaping module 2 and an arc arch beam shaping module 3, and the straightening module includes a leg beam straightening module 4 and an arc arch beam straightening module 5.

[0019] Specifically, through a multi-modal design, this utility model can complete the overall correction, straightening, and reshaping of the straight and curved parts of the leg beams of the U-shaped steel deformable support, as well as the arc-shaped arch beams, on the same hydraulic workbench 1. After the support is corrected and straightened to restore its original state and support performance, it can be reused for reliable support of the roadway.

[0020] Specifically, the top height of the workpiece sliding roller 16 is greater than the top height of the outer wall workpiece shaping support plate 17.

[0021] Specifically, the workpiece sliding roller 16 facilitates the movement of the U-shaped steel support on the working platform 14, converting the sliding friction between the support and the working platform 14 into rolling friction, thereby significantly reducing the movement resistance.

[0022] Specifically, the telescopic end of the hydraulic cylinder 13 is provided with a square punch steel module 131 for connecting with the shaping module or straightening module, and the top of the square punch steel module 131 is provided with a limit screw hole 132.

[0023] Specifically, the leg beam shaping module 2 includes a leg beam shaping punch 21, a first square ring fixing mold sleeve 22, and a leg beam shaping die 24. The leg beam shaping punch 21 is welded to the first square ring fixing mold sleeve 22, and the leg beam shaping punch 21 is sleeved on the square punch steel module 131 through the first square ring fixing mold sleeve 22. The top of the first square ring fixing mold sleeve 22 is vertically slidably connected to a first limiting bolt 23, and the first limiting bolt 23 is threadedly connected to a first limiting nut 25 welded to the top of the first square ring fixing mold sleeve 22. The bottom of the first limiting bolt 23 is used to position and fasten to the limiting screw hole 132. The leg beam shaping die 24 overlaps and is placed on the top of the n-shaped steel pad block 18, and the length of the leg beam shaping die 24 is greater than the length of the leg beam shaping punch 21.

[0024] Specifically, the leg beam straightening module 4 includes an extrusion support plate 41, a leg beam straightening insert support mold 42, and a leg beam shaping movable extrusion module 43. The extrusion support plate 41 is overlapped and placed on top of the n-shaped steel pad 18. The leg beam straightening insert support mold 42 has fitting holes 421 that match the shape of the leg beam 6. Two leg beam straightening insert support molds 42 are fitted onto the leg beam 6 to be straightened through the fitting holes 421 at intervals. One side of the leg beam straightening insert support mold 42 is connected to the... The extrusion support plate 41 abuts against each other, and the leg beam shaping movable extrusion module 43 is placed on the top of the working platform 14. One side of the leg beam shaping movable extrusion module 43 is provided with a limiting groove 431 that matches the shape of the side wall of the leg beam 6. The other side of the leg beam shaping movable extrusion module 43 is used to abut against the end of the square punch steel module 131, so that the square punch steel module 131 can extrude the leg beam 6 that has been fitted into the leg beam shaping movable extrusion module 43, thereby achieving the function of cold extrusion straightening and restoring the original support geometry.

[0025] Specifically, the leg beam shaping module 2 is used to shape the straight part of the leg beam 6, while the curved part at the top of the leg beam 6 is shaped by the arc-shaped arch beam shaping module 3; at the same time, the leg beam straightening module 4 is only used to straighten the straight part of the leg beam 6, while the curved part at the top of the leg beam 6 is corrected by the arc-shaped arch beam straightening module 5.

[0026] Specifically, when the leg beam 6 not only bends as a whole (such as not straight in the X-axis direction), but also has outward warping of the beam edge and bending deformation towards the inside of the roadway (such as in the Y-axis direction), the leg beam shaping module 2 is used to punch and shape the inwardly bent section segment by segment to correct the deformation in the Y-axis direction, and then the leg beam straightening module 4 is used to straighten it as a whole in the X-axis direction. If the leg beam 6 only has overall bending (not straight in the X-axis direction) without obvious edge warping or inward bending (Y-axis), then the leg beam straightening module 4 can be used directly to straighten it.

[0027] Specifically, in the leg beam shaping module 2, the length of the leg beam shaping punch 21 is less than the length of the leg beam shaping die 24, which is used to realize the rapid cold stamping and extrusion shaping of the straight rod part of the leg beam 6.

[0028] Specifically, the leg beam straightening module 4 uses two leg beam straightening insert-type support molds 42 in conjunction with a leg beam shaping movable extrusion module 43 to achieve a three-point pressure straightening operation. During straightening, the leg beam 6 to be straightened along the X-axis is placed on the working platform 14. The two leg beam straightening insert-type support molds 42 are fitted onto both ends of the bent section of the leg beam. The leg beam shaping movable extrusion module 43 is placed on the top of the working platform 14, and its side with the limit groove 431 is in contact with the side wall of the leg beam 6. After the hydraulic cylinder 13 is started, the square punch steel module 131 at its telescopic end slowly pushes the leg beam shaping movable extrusion module 43, so that the bent and deformed section of the leg beam 6 is compressed and restored to its original shape.

[0029] Specifically, the arch beam shaping module 3 includes an arch beam shaping die 31, a second square ring fixing die sleeve 32, and an arch beam shaping punch 34. The arch beam shaping die 31 is welded to the second square ring fixing die sleeve 32, and the arch beam shaping die 31 is fitted onto the square punch steel module 131 through the second square ring fixing die sleeve 32. A second limiting bolt 33 is vertically slidably connected to the top of the second square ring fixing die sleeve 32, and the second limiting bolt 33 is threadedly connected to a second limiting nut 35 welded to the top of the second square ring fixing die sleeve 32. The bottom of the second limiting bolt 33 is used for positioning and fastening connection with the limiting screw hole 132. A rectangular base 36 is welded to the bottom of the arch beam shaping punch 34. The arch beam shaping punch 34 is placed on top of the n-shaped steel pad block 18 through the rectangular base 36, and the length of the arch beam shaping die 31 is greater than the length of the arch beam shaping punch 34.

[0030] Specifically, the arc-shaped arch beam straightening module 5 includes an arch beam straightening punch 51, a third-party shaped ring fixing sleeve 52, and an arch beam limiting die 54. The arch beam straightening punch 51 is welded to the third-party shaped ring fixing sleeve 52, and the arch beam straightening punch 51 is fitted onto the square punch steel module 131 through the third-party shaped ring fixing sleeve 52. A third limiting bolt 53 is vertically slidably connected to the top of the third-party shaped ring fixing sleeve 52, and the third limiting bolt 53 is welded to the third-party shaped ring fixing sleeve 54. The third limiting nut 55 at the top of the ring-fixing mold sleeve 52 is threaded. The bottom of the third limiting bolt 53 is used to position and fasten with the limiting screw hole 132. The arch beam limiting die 54 overlaps the top of the n-shaped steel pad 18, and the length of the arch beam limiting die 54 is greater than the length of the arch beam straightening punch 51. The arch beam limiting die 54 being longer than the arch beam straightening punch 51 facilitates a wider contact surface for the arch beam entering the groove, resulting in a better extrusion and shaping effect, and is more conducive to the extrusion forming effect of local deformation points of the U-shaped steel bracket.

[0031] Specifically, the arc-shaped arch beam shaping module 3 is used for shaping the curved portion of the top of the leg beam 6 and the arch beam section. When the arc-shaped arch beam undergoes local twisting deformation in the X-axis direction, accompanied by edge warping or curvature changes towards the inside of the roadway, the arc-shaped arch beam shaping module 3 should be used for correction first. During operation, the concave side of the arch beam is fitted into the arch beam shaping punch 34 fixed on the n-shaped steel pad 18, and the hydraulic cylinder 13 is activated to push the square punch steel module 131. The arch beam forming die 31 performs segmental cold pressing forming of the arch beam along the Y-axis direction. The working surfaces of both the arch beam forming die 31 and the arch beam forming punch 34 in this module are machined to be profiles consistent with the designed curvature of the arch beam. Through the contour extrusion of the curved surfaces, the original curvature of the arch beam is gradually restored, and edge warping, X-direction twisting and Y-direction curvature deviation are eliminated simultaneously. The arch beam forming die 31 is longer than the arch beam forming punch 34, which facilitates localized and precise pressure application to the twisted sections and improves the forming accuracy.

[0032] Specifically, if the arch beam only twists in the X-axis direction without significant edge warping or overall curvature change in the Y-axis direction, the arch beam straightening module 5 is used directly for straightening. During operation, the arch beam is placed in the arch beam limiting die 54 with the convex side facing down. The hydraulic cylinder 13 is activated to push the arch beam straightening punch 51 to apply pressure to the arch beam along the Y-axis direction. The working surfaces of the arch beam straightening punch 51 and the arch beam limiting die 54 in this module are both straight surfaces. Straightening is achieved by the cooperation of "straight surface pressing arc surface". During this process, because the arch beam straightening punch 51 is a straight die and the arch beam is curved, its two ends first contact the starting areas on both sides of the arch beam's curved section and apply pressure, avoiding the failure of the arch beam shape caused by a one-time full compaction. This design makes the top area of ​​the arch beam form a contact fulcrum with the arch beam limiting die 54. At the same time, the two ends of the arch beam's X-direction tortuous section are squeezed by the arch beam straightening punch 51, which together form a three-point squeezing action, effectively realizing the correction of torsional deformation in the X-axis direction and ensuring that the arch beam restores its designed shape.

[0033] The usage process of this utility model is as follows: First, based on the deformation type and location of the U-shaped steel bracket to be repaired, the operator selects and installs the corresponding shaping or straightening modules onto the hydraulic workbench 1. That is, the leg beam shaping module 2, the arc arch beam shaping module 3, the leg beam straightening module 4 or the arc arch beam straightening module 5 are connected to the square ring fixing mold sleeve of each module and the square punch steel module 131 of the extension end of the hydraulic cylinder 13 through the set, and are tightened and fixed by the limit bolts. At the same time, the corresponding concave mold or pad is placed at the designated position of the n-shaped steel pad 18 or the work platform 14 to perform multi-segment deformation correction. Secondly, if the leg beam 6 undergoes complex deformation, the leg beam shaping module 2 is first used to perform segmented stamping shaping on the Y-direction twist and edge warping, and then the leg beam straightening module 4 is used to straighten the X-direction bending by applying pressure at three points; if the leg beam 6 only bends in the X-direction, the leg beam straightening module 4 is used directly for straightening. Furthermore, for arched beams, if there are complex deformations such as X-direction torsion and edge warping, the arched beam shaping module 3 should first be used to restore its designed curvature through arc-surface contouring and extrusion, and then the arched beam straightening module 5 should be used to correct the X-direction torsion using the principle of "straight surface pressing arc surface" combined with three-point extrusion; if the arched beam only has X-direction torsion, then the arched beam straightening module 5 should be used directly for straightening. Then, during the straightening process, the workpiece sliding roller 16 can be used to assist in moving the deformed part of the support, reducing the frictional resistance of manually dragging the support during the shaping of large supports. The hydraulic station 12 provides power to the hydraulic cylinder 13 to push the mold to complete the cold extrusion shaping and straightening operation. Finally, after each part of the bracket has been corrected and restored to its designed shape and straightness, the workpiece is removed for inspection, the repair is completed, and the mold is cleaned and put back in place for future use.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A cold extrusion repair mold for rapid correction of U-shaped steel deformation brackets, characterized in that: It includes a hydraulic worktable (1) and a shaping module and a straightening module installed on the hydraulic worktable (1) for shaping and straightening operations on the U-shaped steel deformation bracket, respectively; The hydraulic workbench (1) includes a frame (11), a hydraulic station (12), a hydraulic cylinder (13), an inner wall workpiece forming support plate (15), and a workpiece sliding roller (16). The frame (11) is provided with a recessed work platform (14). The hydraulic station (12) is installed on one side of the top area of ​​the frame (11) not occupied by the work platform (14). The hydraulic cylinder (13) is arranged inside the housing of the work platform (14) and is located in the center position near the hydraulic station (12). The hydraulic station (12) includes a cylinder return fluid pipeline and a gear booster pump installed in its rear housing. The top of the frame (11) is also equipped with a motor and a manual operating valve group. The cylinder return fluid pipeline of the hydraulic station (12) is connected to the inlet pipe on the hydraulic cylinder (13) through a hydraulic pipeline and connector. The inlet pipe is connected to the operating valve group and then connected to the cylinder through the operating valve group. The inlet and outlet of the manual operating valve group are connected through a hydraulic pipeline. The oil circuit of the hydraulic station (12) is connected to the corresponding interface of the oil circuit. The output end of the motor is connected to the gear booster pump. The feed side and the discharge side of the working platform (14) are provided with concave outer wall workpiece shaping support plates (17), which are arranged in conjunction with the frame (11) to enclose the working platform (14). Two inner wall workpiece shaping support plates (15) are respectively installed on the left and right sides of the top of the working platform (14), and the height of the inner wall workpiece shaping support plates (15) is the same as the height of the outer wall workpiece shaping support plates (17). Two workpiece sliding rollers (16) are radially rotated and connected to the top of the working platform (14), and are respectively located in the two groove frames enclosed by the outer wall workpiece shaping support plates (17) and the inner wall workpiece shaping support plates (15). An n-shaped steel pad (18) is snapped onto the end of the outer wall workpiece shaping support plate (17) away from the hydraulic cylinder (13). The shaping module includes a leg beam shaping module (2) and an arc arch beam shaping module (3), and the straightening module includes a leg beam straightening module (4) and an arc arch beam straightening module (5).

2. The cold extrusion repair mold for rapid correction of U-shaped steel deformation brackets according to claim 1, characterized in that: The top height of the workpiece sliding roller (16) is greater than the top height of the outer wall workpiece shaping support plate (17).

3. The cold extrusion repair mold for rapid correction of U-shaped steel deformation brackets according to claim 2, characterized in that: The telescopic end of the hydraulic cylinder (13) is provided with a square punch steel module (131) for connecting with the shaping module or straightening module, and the top of the square punch steel module (131) is provided with a limit screw hole (132).

4. The cold extrusion repair mold for rapid correction of U-shaped steel deformation brackets according to claim 3, characterized in that: The leg beam shaping module (2) includes a leg beam shaping punch (21), a first square ring retaining mold sleeve (22), and a leg beam shaping die (24). The leg beam shaping punch (21) is welded to the first square ring retaining mold sleeve (22), and the leg beam shaping punch (21) is sleeved on the square punch steel module (131) through the first square ring retaining mold sleeve (22). The top of the first square ring retaining mold sleeve (22) is vertically slidably connected with a first limit. Bolt (23), and the first limiting bolt (23) is threadedly connected to the first limiting nut (25) welded to the top of the first square ring mold sleeve (22). The bottom of the first limiting bolt (23) is used to position and fasten to the limiting screw hole (132). The leg beam shaping die (24) overlaps and is placed on the top of the n-shaped steel pad (18). The length of the leg beam shaping die (24) is greater than the length of the leg beam shaping punch (21).

5. The cold extrusion repair mold for rapid correction of U-shaped steel deformation brackets according to claim 4, characterized in that: The leg beam straightening module (4) includes an extrusion support plate (41), a leg beam straightening insert support mold (42), and a leg beam shaping movable extrusion module (43). The extrusion support plate (41) is placed on top of the n-shaped steel pad (18). The leg beam straightening insert support mold (42) has fitting holes (421) that match the shape of the leg beam (6). Two leg beam straightening insert support molds (42) are fitted onto the leg beam (6) through the fitting holes (421) at intervals. On the leg beam (6), one side of the leg beam straightening insert support mold (42) abuts against the extrusion support plate (41), the leg beam shaping movable extrusion module (43) is placed on the top of the working platform (14), and one side of the leg beam shaping movable extrusion module (43) is provided with a limiting groove (431) that matches the shape of the side wall of the leg beam (6), and the other side of the leg beam shaping movable extrusion module (43) is used to abut against the end of the square punch steel module (131).

6. The cold extrusion repair mold for rapid correction of U-shaped steel deformation brackets according to claim 3, characterized in that: The arch beam shaping module (3) includes an arch beam shaping die (31), a second square ring retaining die sleeve (32), and an arch beam shaping punch (34). The arch beam shaping die (31) is welded to the second square ring retaining die sleeve (32), and the arch beam shaping die (31) is fitted onto the square punch steel module (131) through the second square ring retaining die sleeve (32). A second limiting bolt (33) is vertically slidably connected to the top of the second square ring retaining die sleeve (32), and the second limiting bolt (33) The second limiting nut (35) is threadedly connected to the top of the second square ring mold sleeve (32). The bottom of the second limiting bolt (33) is used to position and fasten with the limiting screw hole (132). The bottom of the arch beam shaping punch (34) is welded with a rectangular base (36). The arch beam shaping punch (34) is placed on the top of the n-shaped steel pad (18) by overlapping the rectangular base (36). The length of the arch beam shaping die (31) is greater than the length of the arch beam shaping punch (34).

7. The cold extrusion repair mold for rapid correction of U-shaped steel deformation brackets according to claim 6, characterized in that: The arc-shaped arch beam straightening module (5) includes an arch beam straightening punch (51), a third-party shaped ring fixed mold sleeve (52), and an arch beam limiting die (54). The arch beam straightening punch (51) is welded to the third-party shaped ring fixed mold sleeve (52), and the arch beam straightening punch (51) is fitted onto the square punch steel module (131) through the third-party shaped ring fixed mold sleeve (52). The top of the third-party shaped ring fixed mold sleeve (52) is vertically slidably connected to a third... The third limiting bolt (53) is threadedly connected to the third limiting nut (55) welded to the top of the third ring mold sleeve (52). The bottom of the third limiting bolt (53) is used to position and fasten with the limiting screw hole (132). The arch beam limiting die (54) overlaps the top of the n-shaped steel pad (18), and the length of the arch beam limiting die (54) is greater than the length of the arch beam straightening punch (51).

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