Torsion bar straightening tool
By designing a torsion bar straightening tool including a base, a correction component and a top module, the problems of high labor intensity, low detection accuracy or high investment in the existing technology are solved, and efficient and low-cost torsion bar straightening and detection are achieved.
Patent Information
- Application Number
- CN202422756848.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-12
AI Technical Summary
Existing torsion bar straightening tooling has problems such as high labor intensity, low detection accuracy or high investment and high maintenance cost, making it difficult to efficiently complete the straightening and detection of torsion bars.
A torsion bar straightening fixture consisting of a base, a correction assembly and a top module is designed. The clamping and positioning of the torsion bar are achieved through the cooperation of a slider and a downward pressing screw. The correction is performed in combination with a hydraulic press. The torsion bar is automatically straightened and inspected by fixing the top module and a limit chuck.
The efficiency and detection accuracy of torsion bar straightening are improved, the labor intensity of workers is reduced, the equipment investment and maintenance costs are reduced, and an efficient torsion bar straightening and detection process is achieved.
Smart Images
Figure CN223325265U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of torsion bar straightening, in particular to a torsion bar straightening tool. Background Art
[0002] Torsion bars are a critical component of high-speed rail's lateral bending resistance system. Centrifugal force exerted on high-speed trains on curves inevitably creates different forces on the inside and outside of the curve, pushing the train out of the track. However, train tracks are not designed to be sloped to resist centrifugal force. Without the use of lateral bending torsion bars to offset this centrifugal force, the train would roll over, potentially leading to a major rollover accident. Torsion bars are typically 50mm in diameter and 2400-2600mm in length. These slender bars inevitably experience significant deformation after heat treatment, requiring hydraulic calibration to a straightness of ≤1mm before proceeding to the final machining process. After heat treatment, the torsion bar achieves a hardness of 47-50HRC and exhibits high elasticity. Furthermore, their slender design makes straightening them extremely challenging. The torsion bar straightening tool is an in-line tool with a built-in double-ended centering mechanism. Once the centering mechanism supports the torsion bar, the centering mechanism does not need to be removed during subsequent alignment and measurement, greatly facilitating the alignment of the torsion bar.
[0003] There are several main methods for straightening torsion bars on the market:
[0004] The first method is to calibrate the hydraulic press and then hoist it onto a V-shaped seat fixture, where a dial indicator is used to measure straightness. This is extremely labor-intensive, as the torsion bar weighs approximately 50 kg and the hoisting speed is slow. In many cases, workers lift the product onto the V-shaped seat fixture. If the straightness fails, they must lift it back onto the hydraulic press for calibration. Calibration of a torsion bar takes up to an hour, which is labor-intensive. Furthermore, the torsion bar, placed on the V-shaped seat, has low detection accuracy, and often needs to be reworked if it fails straightness testing on a lathe in the finishing workshop.
[0005] The second method is to hoist the product onto the runout measurement fixture after the hydraulic press is calibrated, and then use a dial indicator to measure straightness. This method is extremely labor-intensive, the weight of the torsion bar is about 50 kg, and the hoisting speed is slow. In many cases, workers lift the product onto the runout measurement fixture. If the straightness fails, they lift it back onto the hydraulic press for calibration. It takes up to an hour to calibrate a torsion bar. This labor-intensive method results in high detection accuracy.
[0006] The third type is a fully automatic straightening system, in which the hydraulic press and the straightening tooling are integrated, which automatically detects the high and low points of the torsion bar bending and automatically outputs the point calibration amplitude. The disadvantage is that it requires a large one-time investment, high maintenance costs, and high requirements on the workers' operating skills.
[0007] Therefore, the utility model provides a torsion bar straightening tool to solve the above problems. Utility Model Content
[0008] In view of the deficiencies in the prior art, the utility model provides a torsion bar straightening tool to solve the above problems.
[0009] The top of the base is provided with a toothed structure, and the bottom of the toothed structure is fixedly provided with a toothed structure, and the toothed structure is fixedly provided with a toothed structure.
[0010] Furthermore, one side of the slider is fixedly connected to a docking plate, and the inside of the docking plate is rotatably connected to a top module.
[0011] By adopting the above technical solution, the torsion bar to be corrected is supported from both ends.
[0012] Furthermore, one end of the top module is fixedly connected to a limiting chuck, a cylindrical groove is provided inside the limiting chuck, one side of the docking plate is fixedly connected to a slot block, the slot block is slidably connected to a pin column, and one end of the pin column can be inserted into the inside of the cylindrical groove.
[0013] By adopting the above technical solution, the top module can be rotated and positioned at the same time.
[0014] Furthermore, the top of the base plate is fixedly connected to a mounting tube, the bottom of the inner wall of the mounting tube is fixedly connected to a spring, one end of the spring is fixedly connected to a movable rod, one end of the movable rod is fixedly connected to the bottom of the skateboard, and the movable rod is slidably connected to the inner wall of the mounting tube.
[0015] By adopting the above technical solution, excess energy can be absorbed to reset the structure and relieve pressure.
[0016] Furthermore, a hydraulic press is fixedly installed inside the mounting frame.
[0017] By adopting the above technical solution, the torsion bar can be calibrated and tested.
[0018] Furthermore, a receiving block is fixedly connected to the top of the base plate.
[0019] By adopting the above technical solution, a torsion bar can be placed.
[0020] Beneficial effects
[0021] The utility model provides a torsion bar straightening tool. Compared with the existing technology, it has the following advantages:
[0022] 1. The torsion bar straightening tool is designed to clamp the torsion bar by placing it between the two top modules and then adjusting the distance between the two sliders. The handle is then turned to drive the pressing screw to rotate and move downward, thereby driving the concave arc pressure block to move downward together. The concave arc pressure block is tightly pressed against the surface of the slide bar to achieve positioning and fixation of the slider. The limit strip and the limit slide groove are used to limit the concave arc pressure block to prevent it from rotating at will and can only move in the vertical direction.
[0023] 2. The torsion bar straightening fixture can drive the clamped torsion bar to rotate by rotating the top module. When the torsion bar rotates a certain angle, the pin column can be passed through the slot block and then inserted into the cylindrical groove in the limit chuck, thereby completing the fixation of the top module. The hydraulic press is used to calibrate the torsion bar, and the receiving block is used to place the torsion bar. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the implementation scheme of the present invention or the technical scheme in the prior art, the drawings required for use in the implementation scheme or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation schemes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0025] Figure 1 This is a three-dimensional diagram of the external structure of the utility model;
[0026] Figure 2 It is a structural side view of the utility model;
[0027] Figure 3 It is an enlarged view of the structure of A of the utility model;
[0028] Figure 4 It is a side view of the utility model with some structures removed;
[0029] Figure 5 It is an enlarged view of the structure of B of the utility model;
[0030] Figure 6 It is a top view of the structure of the utility model;
[0031] Figure 7 It is an enlarged view of the structure of point C of the present invention.
[0032] In the figure: 1. base; 2. correction component; 21. bottom plate; 22. receiving block; 23. mounting frame; 24. hydraulic press; 25. mounting cylinder; 26. spring; 27. movable rod; 28. slide plate; 29. protruding block; 210. slide bar; 211. slider; 212. pressing screw; 213. concave arc pressure block; 214. limiting strip; 215. handle; 216. limiting slide groove; 217. docking plate; 218. slot block; 219. limiting chuck; 220. cylindrical groove; 221. latch column; 222. top module. DETAILED DESCRIPTION
[0033] It should be noted that in the description of the embodiments of the present application, the terms "front, rear", "left, right", "up, down", etc. indicating directions or positional relationships are all based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present application. The terms "install", "connect", and "connected" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrally connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0034] The present application will be further described in detail below with reference to the accompanying drawings and examples.
[0035] Reference Figures 1 to 7 The embodiment of the present application provides a torsion bar straightening tool, including a base 1, and a correction component 2 is provided on the top of the base 1; the correction component 2 includes a bottom plate 21, the bottom plate 21 is fixedly connected to the top of the base 1, one side of the base 1 is fixedly connected to the mounting bracket 23, one side of the mounting bracket 23 is fixedly connected to the protruding block 29, and the inner wall of the protruding block 29 is fixedly connected to the sliding rod 210. The correction component 2 also includes a slide plate 28, and the slide plate 28 is slidably connected to the outer wall of the sliding rod 210 by a slider 211. A limiting slot 216 is provided inside the slider 211, and a pressing screw 212 is threadedly connected to the internal side wall of the top side wall of the slider 211. One end of the pressing screw 212 is rotatably connected to a concave arc pressure block 213, and both sides of the concave arc pressure block 213 are fixedly connected to a limiting strip 214, and the concave arc pressure block 213 is slidably connected to the inner wall of the slider 211. The limiting strip 214 is slidably connected to the inner wall of the limiting slot 216, and one end of the pressing screw 212 is fixedly connected to a handle 215. A docking plate 217 is fixedly connected to one side of the slider 211 , and a top module 222 is rotatably connected inside the docking plate 217 .
[0036] During specific implementation: the torsion bar is placed between the two top modules 222 and then the distance between the two sliders 211 is adjusted to clamp the torsion bar, and then the handle 215 is turned to drive the downward pressing screw 212 to rotate and move downward, so that it drives the concave arc pressure block 213 to move downward together, so that the concave arc pressure block 213 tightly presses the surface of the slide bar 210 to achieve the positioning and fixation of the slider 211, and the limit bar 214 cooperates with the limit slide groove 216 to limit the concave arc pressure block 213 to prevent it from rotating arbitrarily and can only move in the vertical direction.
[0037] Reference Figures 1 to 7 In one aspect of this embodiment, one end of the top module 222 is fixedly connected to a limit chuck 219, which has a cylindrical groove 220 defined within it. A slot block 218 is fixedly connected to one side of the docking plate 217, and a latch post 221 is slidably connected to the interior of the slot block 218. One end of the latch post 221 can be inserted into the interior of the cylindrical groove 220. A mounting tube 25 is fixedly connected to the top of the base plate 21. A spring 26 is fixedly connected to the bottom of the inner wall of the mounting tube 25. One end of the spring 26 is fixedly connected to a movable rod 27. One end of the movable rod 27 is fixedly connected to the bottom of the slide 28, and the movable rod 27 is slidably connected to the inner wall of the mounting tube 25. A hydraulic press 24 is fixedly mounted within the mounting frame 23. A receiving block 22 is fixedly connected to the top of the base plate 21.
[0038] During specific implementation: by rotating the top module 222, the clamped torsion bar can be driven to rotate. When the torsion bar rotates to a certain angle, the pin column 221 can be passed through the slot block 218 and then inserted into the cylindrical groove 220 in the limit chuck 219, thereby completing the fixation of the top module 222. The hydraulic press 24 is used to calibrate the torsion bar. The receiving block 22 is used to place the torsion bar. The movable rod 27 cooperates with the spring 26. When the slide plate 28 is subjected to pressure, the pressure is relieved by being stretched or compressed by the spring 26. The torsion bar will never fall out of the top module 222, and it will also absorb excess impact energy to increase the service life of each component.
[0039] All electrical equipment in this solution are powered by external power supplies.
[0040] Working principle: After the torsion bar is placed between the two top modules 222, the distance between the two sliders 211 is adjusted to clamp the torsion bar. Then, the handle 215 is turned to drive the pressing screw 212 to rotate and move downward, so that the concave arc pressure block 213 is also driven to move downward, so that the concave arc pressure block 213 is tightly pressed against the surface of the slide bar 210 to achieve the positioning and fixation of the slider 211. The limit bar 214 cooperates with the limit slot 216 to limit the concave arc pressure block 213 to prevent it from rotating arbitrarily and can only move in the vertical direction. By rotating the top module 222, It drives the clamped torsion bar to rotate. When the torsion bar rotates to a certain angle, the pin column 221 can be passed through the slot block 218 and then inserted into the cylindrical groove 220 in the limit chuck 219, thereby completing the fixation of the top module 222. The hydraulic press 24 is used to calibrate the torsion bar. The receiving block 22 is used to place the torsion bar. The movable rod 27 cooperates with the spring 26. When the slide plate 28 is subjected to pressure, the spring 26 is stretched or compressed to relieve the pressure. The torsion bar will never fall out of the top module 222, and it will also absorb excess impact energy to increase the service life of each component.
[0041] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0042] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A torsion bar straightening tool, comprising a base (1), characterized in that: A correction assembly (2) is provided on the top of the base (1); the correction assembly (2) comprises a bottom plate (21), the bottom plate (21) is fixedly connected to the top of the base (1), a mounting frame (23) is fixedly connected to one side of the base (1), a protruding block (29) is fixedly connected to one side of the mounting frame (23), a sliding bar (210) is fixedly connected to the inside of the protruding block (29), the correction assembly (2) further comprises a slide plate (28), the slide plate (28) is slidably connected to the outer wall of the sliding bar (210) by a slider (211), the slider ( A limiting slide groove (216) is provided inside the slider (211), and a downward pressing screw (212) is threadedly connected to the internal side wall of the top of the slider (211), and one end of the downward pressing screw (212) is rotatably connected to a concave arc pressure block (213), and both sides of the concave arc pressure block (213) are fixedly connected to a limiting strip (214), and the concave arc pressure block (213) is slidably connected to the inner wall of the slider (211), and the limiting strip (214) is slidably connected to the inner wall of the limiting slide groove (216), and one end of the downward pressing screw (212) is fixedly connected to a handle (215).
2. The torsion bar straightening tool according to claim 1, characterized in that: One side of the slider (211) is fixedly connected to a docking plate (217), and the interior of the docking plate (217) is rotatably connected to a top module (222).
3. The torsion bar straightening tool according to claim 2, characterized in that: One end of the top module (222) is fixedly connected to a limiting chuck (219), and a cylindrical groove (220) is provided inside the limiting chuck (219). One side of the docking plate (217) is fixedly connected to a slot block (218), and a latch column (221) is slidably connected inside the slot block (218), and one end of the latch column (221) can be inserted into the inside of the cylindrical groove (220).
4. The torsion bar straightening tool according to claim 1, characterized in that: The top of the base plate (21) is fixedly connected to a mounting cylinder (25), the bottom of the inner wall of the mounting cylinder (25) is fixedly connected to a spring (26), one end of the spring (26) is fixedly connected to a movable rod (27), one end of the movable rod (27) is fixedly connected to the bottom of the slide plate (28), and the movable rod (27) is slidably connected to the inner wall of the mounting cylinder (25).
5. The torsion bar straightening tool according to claim 1, characterized in that: An oil press (24) is fixedly installed inside the mounting frame (23).
6. The torsion bar straightening tool according to claim 1, characterized in that: A receiving block (22) is fixedly connected to the top of the bottom plate (21).