Automatic detection equipment for precision steel pipes
Patent Information
- Application Number
- CN202522307894.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-31
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-10-31
AI Technical Summary
[0005]针对现有技术中所存在的不足，本实用新型提供了一种精密钢管自动检测设备，其解决了现有技术中夹持固定钢管时，夹头与钢管表面属于点接触，可能对钢管表面造成损伤的问题
本实用新型夹持件包括与钢管同轴的卷轴和绕设于卷轴上的发条片，所述发条片一端延伸至通道内部并朝向远离通道中心的方向凸出，使得全部的发条片在通道内部环绕形成包裹式结构。因此当钢管一端伸入至通道内部时，通过卷轴的旋转可以驱使发条片朝向通道中部延伸，使得发条片在自身的弹性作用下相互挤压、卷曲并包裹在钢管的表面，最终与钢管表面紧密接触实现对钢管的固定。因发条片与钢管之间为面接触，相比传统的夹持方式而言接触位置的压强更低，因此不容易对钢管造成损伤。同时发条片自身具有一定弹性，因此也不容易在固定钢管时造成其凹陷、变形的问题。
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Figure CN224838874U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to precision steel pipe processing, and more particularly to an automatic inspection device for precision steel pipes. Background Technology
[0002] Precision steel pipes are widely used in numerous fields of modern industrial production, such as aerospace, automotive manufacturing, petrochemicals, and electronics. As key components or fluid transport carriers, the quality and performance of precision steel pipes directly affect the reliability, safety, and efficiency of the entire product and system. Among these, the straightness of the pipe is one of the key indicators for measuring its quality and performance. Precise straightness is crucial for ensuring smooth fluid transport within the pipe, reducing pressure loss, preventing leaks, and extending the pipe's service life.
[0003] In existing technologies, optical measurement methods are increasingly being applied to pipeline straightness measurement, with laser measurement being the primary optical measurement method. Multiple detection positions are set along the central axis of the steel pipe. After the worker places the steel pipe, the laser measurement component is moved along the central axis of the steel pipe to detect multiple detection positions on the steel pipe. The data is then collected and processed to obtain the final straightness parameters of the steel pipe. In this way, the straightness of the steel pipe surface and the presence of defects such as protrusions and depressions can be indirectly reflected by laser ranging, thus ensuring the quality of the steel pipe.
[0004] However, existing technologies still have certain problems. When fixing steel pipes, they generally rely on external clamping, and the clamping device typically consists of multiple grippers that contact the steel pipe surface for positioning and fixation. However, the grippers only have point contact with the pipe surface. To ensure the stability of the steel pipe during testing, a certain pressure needs to be maintained, which may cause wear on the pipe surface. For thinner steel pipes, this could even cause slight deformation, affecting the pipe's quality. Therefore, a better testing device is needed to solve the clamping problem. Summary of the Invention
[0005] To address the shortcomings of existing technologies, this utility model provides an automatic precision steel pipe testing device, which solves the problem that when clamping and fixing steel pipes, the clamp and the surface of the steel pipe are in point contact, which may cause damage to the surface of the steel pipe.
[0006] To achieve the above objectives, this utility model proposes a precision steel pipe automatic inspection device, including a base, several mounting supports movably mounted on the base, and a laser inspection device fixedly mounted on the base. The base has a strip-shaped structure, the laser inspection device is installed in the middle of the base, and the mounting supports are respectively located at both ends of the laser inspection device, so that when the two ends of the steel pipe are clamped and fixed by the mounting supports, the middle part passes through the laser inspection device. The mounting supports can move back and forth along the base, thereby allowing the steel pipe to move back and forth axially inside the laser inspection device. The mounting bracket includes a movable part and a mounting part, wherein the movable part is movably connected to the base, and the mounting part is fixedly disposed at the top of the movable part. The mounting part includes a channel that runs through the steel pipe axially from front to back. The channel has only front and rear end faces and no inner wall. Several clamping members are arranged around the channel inside the mounting part. The clamping members include a spool coaxial with the steel pipe and a spring plate wound on the spool. One end of the spring plate extends into the inside of the channel and protrudes in a direction away from the center of the channel, so that all the spring plates are wrapped around the inside of the channel to form a wrapping structure.
[0007] Furthermore, the base is provided with a track, and the bottom of the movable part is slidably connected to the track, so that the entire mounting support can move freely along the track.
[0008] Furthermore, the laser detection device includes a mounting frame, in the middle of which is a ring-shaped detection cavity coaxial with the steel pipe, and a plurality of laser rangefinders are arranged on the inner wall of the detection cavity.
[0009] Furthermore, an annular guide rail is installed on the inner wall of the detection cavity, and the laser rangefinder is slidably mounted on the annular guide rail via a trolley, so that the laser rangefinder can move circumferentially around the central axis of the steel pipe.
[0010] Furthermore, a number of blocking blocks are evenly distributed on the annular guide rail, the number of which corresponds to the laser rangefinder. Contact switches are respectively provided on both sides of the annular guide rail corresponding to the blocking blocks. When the trolley moves to the position of the blocking block, the contact switch is activated, and the movement direction of the trolley is controlled by the contact switch.
[0011] Furthermore, the mounting part is provided with annular frames at the front and rear end faces of the steel pipe, and the inner areas of the annular frames form a channel. The clamping member is fixed in the inner area of the mounting part around the outer side of the annular frame. The length of the clamping member's spool corresponds to the length of the channel, and its two ends are respectively rotatably mounted on the inner wall of the mounting part on the outer side of the annular frame. One end of the rotating shaft is also connected to a motor to drive its rotation.
[0012] Compared with the prior art, the present invention has the following beneficial effects: This utility model's clamping component includes a spool coaxial with the steel pipe and spring-loaded sheets wound around the spool. One end of each spring-loaded sheet extends into the channel and protrudes away from the channel's center, forming a wrapping structure within the channel. Therefore, when one end of the steel pipe is inserted into the channel, the rotation of the spool drives the spring-loaded sheets towards the center of the channel. Under their own elasticity, the spring-loaded sheets press against each other, curl, and wrap around the surface of the steel pipe, ultimately achieving tight contact and fixing the pipe in place. Because the contact between the spring-loaded sheets and the steel pipe is surface-to-surface, the pressure at the contact point is lower compared to traditional clamping methods, thus reducing the risk of damage to the steel pipe. Furthermore, the spring-loaded sheets themselves possess a certain degree of elasticity, preventing dents or deformation when fixing the steel pipe. Attached Figure Description
[0013] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.
[0014] Figure 2 This is a front view of the mounting part in the mounting bracket of this utility model embodiment.
[0015] Figure 3 This is a front view of the laser detection device in an embodiment of the present invention.
[0016] In the above figures: 1. Base; 2. Laser detection device; 3. Movable part; 4. Mounting part; 11. Track; 21. Mounting frame; 22. Circular guide rail; 23. Trolley; 24. Laser rangefinder; 25. Blocking block; 41. Channel; 42. Circular frame; 43. Reel; 44. Spring. Detailed Implementation
[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.
[0018] Example: like Figure 1 As shown, this utility model proposes an automatic precision steel pipe inspection device, including a base 1, several mounting supports movably mounted on the base 1, and a laser inspection device 2 fixedly mounted on the base 1. The base 1 has a strip-shaped structure. The laser inspection device 2 is installed in the middle of the base 1, and the mounting supports are respectively located at both ends of the laser inspection device 2, so that when both ends of the steel pipe are clamped and fixed by the mounting supports, the middle part passes through the laser inspection device 2. The mounting supports can move back and forth along the base 1, allowing the steel pipe to move axially back and forth inside the laser inspection device 2, thus enabling all parts of the steel pipe to pass through the location of the laser inspection device 2, thereby completing the inspection of the steel pipe surface.
[0019] like Figure 2As shown in the specific scheme of this embodiment, the mounting support includes a movable part 3 and a mounting part 4. The movable part 3 is movably connected to the base 1. The mounting part 4 is fixedly set at the top of the movable part 3. The mounting part 4 includes a channel 41 that runs through the steel pipe axially. The channel 41 only has front and rear end faces and no inner wall. Four clamping members are arranged around the channel 41 inside the mounting part 4. The clamping members include a spool 43 coaxial with the steel pipe and a spring plate 44 wound on the spool 43. One end of the spring plate 44 extends into the inside of the channel 41 and protrudes in a direction away from the center of the channel 41, so that all the spring plates 44 are wrapped around the inside of the channel 41 to form a wrap-around structure.
[0020] In this embodiment, a track 11 is provided on the base 1, and the bottom of the movable part 3 is slidably connected to the track 11, thereby allowing the entire mounting support to move freely along the track 11. Preferably, the track 11 adopts a technology similar to that of an electronically controlled camera track, and can use a ball screw guide rail structure, which is existing technology and will not be described in detail here. In this embodiment, the track 11 includes two sections located at both ends of the laser detection device 2, and the mounting support moves synchronously and in the same direction on the guide rails at both ends, ensuring that the steel pipe is not subjected to axial stress during the movement.
[0021] Preferably, in this embodiment, the mounting part 4 is located at the top of the movable part 3 facing the laser detection device 2, so that the movable parts 3 on the two mounting supports extend vertically beyond the area of the mounting part 4. In this way, when the mounting supports move close to the laser detection device 2, the movable part 3 can partially extend into the laser detection device 2, so that as much of the external area of the steel pipe as possible, except for the clamping area, is subject to laser detection.
[0022] Furthermore, the mounting part 4 is provided with annular frames 42 at the front and rear end faces corresponding to the steel pipe. The inner areas of the annular frames 42 form a channel 41. The clamping member is fixed to the inner area of the mounting part 4 around the outer side of the annular frames 42. The length of the clamping member's spool 43 corresponds to the length of the channel 41, and its two ends are respectively rotatably mounted on the inner wall of the mounting part 4 outside the annular frames 42. One end of the spool is also connected to a motor to drive its rotation. Before the steel pipe is inserted, the spool 43 drives the spring plate 44 to retract, so the internal space of the channel 41 is large enough to accommodate the steel pipe. After the steel pipe is inserted, the spool 43 rotates and screws the spring plate 44 into the channel 41. The spring plate 44 gradually wraps around the outer wall surface of the steel pipe to form a stable fixing structure, thus completing the limiting and fixing of the steel pipe. Because the spring plate 44 and the steel pipe are in surface contact, the pressure at the contact point is lower than that of traditional clamping methods, so it is not easy to damage the steel pipe. Meanwhile, the spring plate 44 itself has a certain degree of elasticity, so it is not easy to cause dents or deformation when fixing the steel pipe.
[0023] like Figure 3As shown in the preferred embodiment, the laser detection device 2 includes a mounting frame 21. An annular detection cavity, coaxial with the steel pipe, is located in the center of the mounting frame 21. Four laser rangefinders 24 are mounted on the inner wall of the detection cavity. Furthermore, an annular guide rail 22 is also installed on the inner wall of the detection cavity. The laser rangefinders 24 are slidably mounted on the annular guide rail 22 via trolleys 23, allowing the laser rangefinders 24 to move circumferentially around the central axis of the steel pipe. In this embodiment, the annular guide rail 22 employs a high-precision V-shaped roller and guide rail cooperation structure, forming a recyclable closed-loop system through modular design. Since this is prior art, it will not be elaborated upon here. This method allows the laser rangefinders 24 to move circumferentially, thereby completely covering the entire surface of the steel pipe, detecting straightness while comprehensively judging the smoothness of the steel pipe surface.
[0024] In a preferred embodiment, four blocking blocks 25 are evenly spaced on the annular guide rail 22. The number of blocking blocks 25 corresponds to the number of laser rangefinders 24. Contact switches are respectively provided on both sides of the annular guide rail 22 corresponding to the blocking blocks 25. When the trolley 23 moves to the position of a blocking block 25, the contact switches are activated, and the movement direction of the trolley 23 is controlled by the contact switches. Whenever one of the trolleys 23 touches a contact switch first, all contact switches simultaneously control the trolleys 23 to move in the opposite direction, thus maintaining the trolley 23's reciprocating motion between two blocking blocks 25 and preventing excessive movement of the trolley 23 from causing circuitry problems in the laser rangefinder 24.
[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. An automatic inspection device for precision steel pipes, characterized in that, The device includes a base, several mounting supports movably mounted on the base, and a laser detection device fixedly mounted on the base. The base is a strip-shaped structure. The laser detection device is installed in the middle of the base. The mounting supports are respectively located at both ends of the laser detection device, so that when the two ends of the steel pipe are clamped and fixed by the mounting supports, the middle part passes through the laser detection device. The mounting supports can move back and forth along the base, thereby allowing the steel pipe to move back and forth axially inside the laser detection device. The mounting bracket includes a movable part and a mounting part, wherein the movable part is movably connected to the base, and the mounting part is fixedly disposed at the top of the movable part. The mounting part includes a channel that runs through the steel pipe axially from front to back. The channel has only front and rear end faces and no inner wall. Several clamping members are arranged around the channel inside the mounting part. The clamping members include a spool coaxial with the steel pipe and a spring plate wound on the spool. One end of the spring plate extends into the inside of the channel and protrudes in a direction away from the center of the channel, so that all the spring plates are wrapped around the inside of the channel to form a wrapping structure.
2. The precision steel pipe automatic inspection equipment as described in claim 1, characterized in that, The base is provided with a track, and the bottom of the movable part is slidably connected to the track, so that the entire mounting support can move freely along the track.
3. The precision steel pipe automatic inspection equipment as described in claim 1, characterized in that, The laser detection device includes a mounting frame, in the middle of which is a ring-shaped detection cavity coaxial with the steel pipe, and several laser rangefinders are installed on the inner wall of the detection cavity.
4. The precision steel pipe automatic inspection equipment as described in claim 3, characterized in that, An annular guide rail is also installed on the inner wall of the detection cavity. The laser rangefinder is slidably mounted on the annular guide rail via a trolley, so that the laser rangefinder can move circumferentially around the central axis of the steel pipe.
5. The precision steel pipe automatic inspection equipment as described in claim 4, characterized in that, The annular guide rail has several blocking blocks evenly distributed at intervals. The number of blocking blocks corresponds to the laser rangefinder. Contact switches are respectively provided on both sides of the annular guide rail corresponding to the blocking blocks. When the trolley moves to the position of the blocking block, the contact switch is activated, and the movement direction of the trolley is controlled by the contact switch.
6. The precision steel pipe automatic inspection equipment as described in claim 1, characterized in that, The mounting part is provided with annular frames at the front and rear end faces of the steel pipe. The inner areas of the annular frames form a channel. The clamping member is fixed in the inner area of the mounting part around the outer side of the annular frame. The length of the clamping member's spool corresponds to the length of the channel. Its two ends are respectively rotatably mounted on the inner wall of the mounting part outside the annular frame. One end of the spool is also connected to a motor to drive its rotation.