A bending degree measuring device for precision steel pipe machining
By using a rotating ring and sliding shaft structure for quick fixation and a motor-driven height adjustment, the problems of cumbersome operation and insufficient stability of existing steel pipe bending measurement devices are solved, achieving efficient and accurate measurement of bending of multi-specification steel pipes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN SHIFANG WELDED TUBE FACTORY
- Filing Date
- 2025-09-08
- Publication Date
- 2026-06-23
AI Technical Summary
Existing steel pipe bending measurement devices are cumbersome and time-consuming to fix and disassemble. Their stability depends on the bolt tightening force, which affects the measurement accuracy. Furthermore, they are not suitable for efficient testing of steel pipes of various specifications.
The rotating ring and sliding shaft structure enables the rapid fixing and disassembly of steel pipes. Combined with the motor-driven threaded rod adjustment device, it can adapt to the height adjustment of steel pipes of different specifications. The mechanical limit structure improves stability and versatility.
It improves the efficiency and stability of steel pipe fixing and disassembly, reduces the labor intensity of operators, adapts to the bending measurement needs of various specifications of steel pipes, and ensures the accuracy and versatility of measurement results.
Smart Images

Figure CN224398637U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel pipe processing technology, and in particular to a bending degree measuring device for precision steel pipe processing. Background Technology
[0002] In the field of precision steel pipe processing, the curvature of the steel pipe is a crucial indicator of its quality, directly impacting subsequent assembly accuracy and performance. With the increasing demands for precision in high-end sectors such as aerospace and machinery manufacturing, the development of a device capable of efficiently and accurately measuring the curvature of steel pipes has become an urgent industry need. The emergence of a curvature measuring device for precision steel pipe processing aims to solve the problems of low efficiency and poor accuracy inherent in traditional measurement methods, providing reliable technical support for quality control in steel pipe processing.
[0003] In existing technologies, devices for measuring the bending degree of steel pipes typically use bolt-fastening or clamp-type mechanical structures to fix the steel pipe. The underlying principle is that the steel pipe is clamped onto a fixed support using tools such as wrenches, and then the measuring component is moved by manually adjusting a screw or linkage mechanism to detect the bending degree of the steel pipe. This mechanical structure relies on manual operation for fixing and adjustment, requiring frequent changes of clamps or readjustment of the fixing position when dealing with steel pipes of different specifications, making the operation process rather cumbersome.
[0004] However, existing technologies typically employ bolt fastening or traditional clamping structures for fixing and disassembling steel pipes. Operators need to use wrenches and other tools to tighten or loosen the bolts multiple times, resulting in a time-consuming fixing process and requiring significant manpower for disassembly. When multiple steel pipes need to be tested in batches, frequent disassembly and assembly significantly reduces work efficiency, and the high intensity of manual labor also increases the workload of operators. Furthermore, the stability of traditional fixing methods depends on the bolt tightening force, which can easily lead to insecure fixing and pipe wobbling, thus affecting the accuracy of bending measurement results. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a bending degree measuring device for precision steel pipe processing, which aims to improve the existing technology that usually uses bolt fastening or traditional slot structure in the process of fixing and disassembling steel pipes. Operators need to use tools such as wrenches to perform multiple tightening or loosening operations, which not only takes a long time to fix, but also requires a lot of manpower for disassembly.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a bending degree measuring device for precision steel pipe processing, comprising a steel pipe body, wherein fixing components are provided at both the upper and lower ends of the steel pipe body;
[0007] The fixing component includes a fixing ring and a locking block. The fixing ring is disposed at the upper and lower ends of the steel pipe body. A rotating ring is rotatably connected inside the fixing ring. A rotating disk is fixedly connected to the inner wall of the rotating ring. An arc-shaped sliding groove is opened inside the rotating disk. A sliding shaft is slidably connected inside the rotating disk. The locking block is fixedly connected to the outer wall of the sliding shaft. A T-shaped guide plate is fixedly connected to the outer wall of the locking block. A limit component is provided inside the rotating ring.
[0008] The limiting component includes a sliding ring, the outer wall of which is slidably connected to the inside of the rotating ring. A sliding rod is fixedly connected to one side of the outer wall of the sliding ring, and a spring is sleeved on the outer wall of the sliding rod. A pressure plate is slidably connected to the inside of the fixed ring.
[0009] Furthermore, a fixing plate is fixedly connected to the outer wall of one of the fixing rings, and a bracket is fixedly connected to the outer wall of the other fixing ring.
[0010] Furthermore, a motor is fixedly connected to the top of the bracket, a threaded rod is fixedly connected to the output end of the motor, a bearing is fixedly connected to the top of the threaded rod, and a sliding sleeve is threadedly connected to the outer wall of the threaded rod.
[0011] Furthermore, a connecting plate is fixedly connected to the outer wall of the sliding sleeve, a fixing plate is fixedly connected to the outer wall of the connecting plate, and a guide component is provided inside the bracket.
[0012] Furthermore, the guiding assembly includes a guide post, both ends of which are fixedly connected to the inside of the bracket. The inside of the bracket is provided with a guide groove, and a limit block is fixedly connected to the outer wall of the fixing plate.
[0013] Furthermore, the inner wall of the sliding sleeve is slidably connected to the outer wall of the guide post, and the outer wall of the limiting block is slidably connected to the inner wall of the guide groove.
[0014] Furthermore, one end of the spring is fixedly connected to the inside of the rotating ring, and the other end of the spring is fixedly connected to a sliding ring.
[0015] Furthermore, the outer wall of the sliding ring is slidably connected to the inside of the fixed ring.
[0016] This utility model has the following beneficial effects:
[0017] 1. In this utility model, the rotating ring drives the rotating disk to rotate, causing the sliding shaft to slide in the arc-shaped sliding groove, thereby driving the locking block to quickly fix the steel pipe body. At the same time, when the rotating ring rotates, it drives the sliding rod to move, and under the action of the spring and the sliding ring, the rotating ring is restricted to prevent it from moving randomly, ensuring the stability of the fixed state, greatly improving work efficiency, reducing the labor intensity of operators, and meeting the needs of quick assembly and disassembly of steel pipes in actual production.
[0018] 2. In this utility model, the starting motor drives the threaded rod to rotate, thereby driving the connecting plate and the fixing plate to adjust the height. It can flexibly adjust the height of one end of the steel pipe body according to the workpiece of different size and technical requirements for bending test. This makes the device widely applicable to the bending degree measurement of steel pipes of various specifications, improves the versatility and practicality of the device, and provides a reliable guarantee for the quality inspection of precision steel pipe processing. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of a bending degree measuring device for precision steel pipe processing proposed in this utility model;
[0020] Figure 2 This is a schematic diagram of the internal structure of the fixing ring of a precision steel pipe bending measurement device proposed in this utility model;
[0021] Figure 3 This is a schematic diagram of one side of the rotating ring structure of a precision steel pipe bending measurement device proposed in this utility model;
[0022] Figure 4 This is a schematic diagram of the internal structure of the support for a precision steel pipe processing bending measurement device proposed in this utility model.
[0023] Legend:
[0024] 1. Steel pipe body; 2. Fixed ring; 3. Rotating ring; 4. Rotating disk; 5. Sliding shaft; 6. Clamping block; 7. Arc-shaped sliding groove; 8. Sliding rod; 9. Spring 1; 10. Sliding ring; 11. Pressure plate; 12. T-shaped guide plate; 13. Bracket; 14. Motor; 15. Guide column; 16. Bearing; 17. Threaded rod; 18. Sliding sleeve; 19. Connecting plate; 20. Fixed plate; 21. Limiting block; 22. Guide sliding groove. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Reference Figures 1-4 The present invention provides an embodiment of a bending degree measuring device for precision steel pipe processing, comprising a steel pipe body 1, wherein fixed components are provided at both the upper and lower ends of the steel pipe body 1.
[0027] The fixing component includes a fixing ring 2 and a locking block 6. The fixing ring 2 is set at the upper and lower ends of the steel pipe body 1. The fixing ring 2 is rotatably connected to a rotating ring 3. The inner wall of the rotating ring 3 is fixedly connected to a rotating disk 4. The rotating disk 4 has an arc-shaped sliding groove 7 inside. The rotating disk 4 is slidably connected to a sliding shaft 5 inside. The locking block 6 is fixedly connected to the outer wall of the sliding shaft 5. The outer wall of the locking block 6 is fixedly connected to a T-shaped guide plate 12. The rotating ring 3 is provided with a limit component inside.
[0028] The limiting assembly includes a sliding ring 10, the outer wall of which is slidably connected to the inside of the rotating ring 3. A slide rod 8 is fixedly connected to one side of the outer wall of the sliding ring 10, and a spring 9 is sleeved on the outer wall of the slide rod 8. A pressure plate 11 is slidably connected to the inside of the fixed ring 2. One end of the spring 9 is fixedly connected to the inside of the rotating ring 3, and the other end of the spring 9 is fixedly connected to the sliding ring 10. The outer wall of the sliding ring 10 is slidably connected to the inside of the fixed ring 2.
[0029] Specifically, firstly, both ends of the steel pipe body 1 are inserted into the upper and lower fixing rings 2 respectively. The rotating ring 3 is then driven to rotate, causing the coaxially connected rotating disk 4 to rotate synchronously. The rotating disk 4 has four symmetrically arranged arc-shaped grooves 7 inside. When the rotating ring 3 rotates, the sliding shaft 5 slides along a preset trajectory within the arc-shaped grooves 7. The locking block 6 connected to its end reciprocates within the gap between the fixing ring 2 and the steel pipe body 1, achieving clamping and releasing of the steel pipe body 1. Due to the trajectory design of the arc-shaped grooves 7, the rotating ring 3 only needs to rotate 90° to complete the fixing action. During the rotation of the rotating ring 3, the sliding rod 8 protruding from its outer side slides synchronously along the axial groove of the fixing ring 2. When the sliding rod 8 moves to the preset through-hole position of the steel pipe body 1, the spring 9 inside the fixing ring 2 pushes the sliding ring 10 upwards, locking the top of the sliding rod 8 into the limiting groove of the fixing ring 2, forming a mechanical lock on the rotating ring 3, preventing displacement due to vibration or other factors during measurement. During disassembly, simply press the pressure plate 11 on the outside of the fixing ring 2. The linkage structure forces the sliding ring 10 to compress the spring 9 and move it downward. The slide rod 8 disengages from the limiting groove and retracts into the rotating ring 3. The rotating ring 3 can then be rotated in the opposite direction to quickly release the fixation without the need for additional tools, significantly improving the ease of operation.
[0030] Reference Figures 1-4 One of the fixed rings 2 has a fixed plate 20 fixedly connected to its outer wall, and the other fixed ring 2 has a fixed bracket 13 fixedly connected to its outer wall. The top of the bracket 13 has a fixed motor 14 fixedly connected to its top. The output end of the motor 14 has a fixed threaded rod 17 fixedly connected to its output end. The top of the threaded rod 17 has a fixed bearing 16 fixedly connected to its top. The outer wall of the threaded rod 17 has a threaded connection to a sliding sleeve 18. The outer wall of the sliding sleeve 18 has a fixed connection to a connecting plate 19. The outer wall of the connecting plate 19 has a fixed plate 20 fixedly connected to its top. The bracket 13 has a guide assembly, which includes a guide post 15. Both ends of the guide post 15 are fixedly connected to the inside of the bracket 13. The bracket 13 has a guide groove 22 inside. The outer wall of the fixed plate 20 has a fixed limit block 21 fixedly connected to its top. The inner wall of the sliding sleeve 18 is slidably connected to the outer wall of the guide post 15. The outer wall of the limit block 21 is slidably connected to the inner wall of the guide groove 22.
[0031] Specifically, this is achieved by driving the threaded rod 17 to rotate via the motor 14. A sliding sleeve 18 fitted onto the outer wall of the threaded rod 17 is fixedly connected to the connecting plate 19. When the threaded rod 17 rotates, the sliding sleeve 18 slides up and down along its axial direction, causing the connecting plate 19 and the fixed plate 20 to rise and fall synchronously, thereby adjusting the height of one end of the steel pipe body 1. A limiting block 21 protruding from the bottom surface of the fixed plate 20 is embedded inside the guide groove 22. During the rising and falling process, the limiting block 21 slides along the guide groove 22, constraining the deflection freedom of the fixed plate 20, ensuring linear motion, and avoiding measurement errors caused by shaking. Through the precise drive of the motor 14, the position of the fixed plate 20 can be flexibly adjusted according to the length, wall thickness, and bending test standards of different specifications of steel pipes, covering a wide range of workpiece sizes. The cooperative structure of the guide groove 22 and the limiting block 21 not only improves the stability of the adjustment process but also ensures the uniformity of the load during measurement through mechanical limiting, ensuring that the stress state of the steel pipe body 1 during bending testing meets the standard test requirements. After adjustment, the bending deformation of the steel pipe body 1 can be collected using the matching measuring instruments to meet the high-precision testing requirements of precision steel pipe processing.
[0032] Working principle: When using this measuring device, first insert both ends of the steel pipe body 1 into the upper and lower fixing rings 2 respectively, then drive the rotating ring 3 to rotate, thereby driving the rotating disk 4 to rotate, so that the sliding shaft 5 slides in the pre-set arc-shaped sliding groove 7 inside the rotating disk 4. Then, through the sliding of the sliding shaft 5, the locking block 6 slides inside the fixing ring 2 and the steel pipe body 1, thereby fixing and releasing the steel pipe body 1. During this process, the rotating disk 4 is symmetrically provided with four arc-shaped sliding grooves 7. Only 90° rotation is needed to fix the steel pipe body 1. While the rotating ring 3 is rotating, it will also drive the sliding rod 8 to slide inside the fixing ring 2. When the sliding rod 8 moves into the pre-set through hole inside the steel pipe body 1, the spring 9 pushes the sliding ring 10 and the sliding rod 8 to move upward, thereby pushing the top of the sliding rod 8 into the inside of the fixing ring 2, thereby restricting the rotating ring 3 and preventing it from moving arbitrarily. When disassembling, first press the pressure plate 11 to press the sliding rod 8 into the inside of the rotating ring 3, and then the rotating ring 3 can be rotated in the opposite direction to disassemble, achieving the effect of convenient disassembly and assembly.
[0033] In addition, the starting motor 14 drives the threaded rod 17 to rotate, causing the sliding sleeve 18 to slide up and down along the outer wall of the threaded rod 17, thereby driving the connecting plate 19 and the fixing plate 20 to adjust their height, thereby moving one end of the steel pipe body 1 to perform a bending test. During this process, the movement of the fixing plate 20 will cause the limiting block 21 to slide inside the guide groove 22, thereby ensuring the stability of the entire adjustment process. The height can be adjusted according to workpieces of different sizes and technical requirements, and the degree of bending can be measured after adjustment.
[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A bending degree measuring device for precision steel pipe processing, comprising a steel pipe body (1), characterized in that: The upper and lower ends of the steel pipe body (1) are provided with fixing components; The fixing component includes a fixing ring (2) and a locking block (6). The fixing ring (2) is disposed at the upper and lower ends of the steel pipe body (1). A rotating ring (3) is rotatably connected inside the fixing ring (2). A rotating disk (4) is fixedly connected to the inner wall of the rotating ring (3). An arc-shaped sliding groove (7) is opened inside the rotating disk (4). A sliding shaft (5) is slidably connected inside the rotating disk (4). The locking block (6) is fixedly connected to the outer wall of the sliding shaft (5). A T-shaped guide plate (12) is fixedly connected to the outer wall of the locking block (6). A limit component is provided inside the rotating ring (3). The limiting component includes a sliding ring (10), the outer wall of which is slidably connected to the inside of the rotating ring (3), a slide rod (8) is fixedly connected to one side of the outer wall of the sliding ring (10), a spring (9) is sleeved on the outer wall of the slide rod (8), and a pressure plate (11) is slidably connected to the inside of the fixed ring (2).
2. The bending degree measuring device for precision steel pipe processing according to claim 1, characterized in that: One of the fixed rings (2) has a fixed plate (20) fixedly connected to its outer wall, and the other fixed ring (2) has a bracket (13) fixedly connected to its outer wall.
3. The bending degree measuring device for precision steel pipe processing according to claim 2, characterized in that: A motor (14) is fixedly connected to the top of the bracket (13), and a threaded rod (17) is fixedly connected to the output end of the motor (14). A bearing (16) is fixedly connected to the top of the threaded rod (17), and a sliding sleeve (18) is threadedly connected to the outer wall of the threaded rod (17).
4. The bending degree measuring device for precision steel pipe processing according to claim 3, characterized in that: The outer wall of the sliding sleeve (18) is fixedly connected to a connecting plate (19), the outer wall of the connecting plate (19) is fixedly connected to a fixing plate (20), and the inside of the bracket (13) is provided with a guide component.
5. The bending degree measuring device for precision steel pipe processing according to claim 4, characterized in that: The guiding assembly includes a guide post (15), both ends of which are fixedly connected to the inside of the bracket (13). The inside of the bracket (13) is provided with a guide groove (22), and a limit block (21) is fixedly connected to the outer wall of the fixing plate (20).
6. The bending degree measuring device for precision steel pipe processing according to claim 5, characterized in that: The inner wall of the sliding sleeve (18) is slidably connected to the outer wall of the guide post (15), and the outer wall of the limiting block (21) is slidably connected to the inner wall of the guide groove (22).
7. The bending degree measuring device for precision steel pipe processing according to claim 1, characterized in that: One end of the spring (9) is fixedly connected to the inside of the rotating ring (3), and the other end of the spring (9) is fixedly connected to a sliding ring (10).
8. The bending degree measuring device for precision steel pipe processing according to claim 1, characterized in that: The outer wall of the sliding ring (10) is slidably connected to the inside of the fixed ring (2).