Pipe body coaxiality detection measuring tool structure
By designing a pipe coaxiality testing gauge structure, and using a sleeve and push ring for clamping and fixing combined with a dial indicator, the problem of pipe end coaxiality testing was solved, achieving efficient measurement of the coaxiality of the outer and inner diameters of the pipe, and improving the quality of pipe end processing and welding.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-03-24
AI Technical Summary
In the existing technology, the pipe end coaxiality detection gauge structure cannot effectively detect the coaxiality of the pipe body, resulting in unqualified thread quality at the pipe end and difficulties in welding connection.
A pipe coaxiality measuring instrument structure was designed, including a first sleeve and a second sleeve sleeved on the outside of the pipe body. They are fixed by threaded connection and push ring clamping. Combined with dial indicator detection, the coaxiality of the outside and inside of the pipe body can be measured.
It achieves wide applicability in measuring the coaxiality of the outer and inner diameters of pipes, is easy to carry, can be measured in different locations, and improves the quality of pipe end processing and welding.
Smart Images
Figure CN224034579U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe coaxiality detection technology, and in particular to a pipe coaxiality detection measuring tool structure. Background Technology
[0002] In the steel pipe processing industry, excellent pipe end geometry is crucial for the subsequent processing and use of the pipe, especially the coaxiality of the pipe ends. This has a significant impact on the quality of the threads processed on the pipe ends. Excessive straightness of the pipe ends can lead to defects such as incomplete thread profiles. In addition, in pipelines and other pipes that require welded connections, poor pipe end coaxiality can also cause difficulties in aligning the two pipes. Therefore, a pipe coaxiality testing gauge structure is needed. Utility Model Content
[0003] The purpose of this invention is to propose a pipe coaxiality testing gauge structure to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a pipe coaxiality testing gauge structure, comprising a first sleeve sleeved on the outside of the pipe body, a threaded groove on the outside of the first sleeve, a second sleeve threadedly connected to the outside of the threaded groove, a push ring fixedly connected to the inside of the second sleeve, an inclined surface on the inside of the first sleeve, a clamping mechanism on the inside of the first sleeve, the clamping mechanism comprising a sliding groove, a slider, and a clamping block, a sliding groove on the inside of the inclined surface, a slider slidably connected to the inside of the sliding groove, a clamping block fixedly connected to the outside of the slider, a bearing fixedly connected to the outside of the first sleeve, a fixing block fixedly connected to the outside of the outer ring of the bearing, a bracket on one side of the fixing block, a pin hole on the outside of one end of the bracket, a first bolt threadedly connected to the top of the fixing block, a dial indicator on one end of the bracket, and an installation mechanism at the connection between the dial indicator and the bracket.
[0005] Preferably, three clamping blocks are provided, and the clamping blocks are configured as wedges, with the inclined surfaces of the clamping blocks fitting together with the inclined surfaces.
[0006] Preferably, one end of the bracket is inserted into the fixing block, and the fixing block is rotatably connected to the first sleeve through a bearing.
[0007] Preferably, the mounting mechanism includes a fixing ring and a second bolt, one end of the bracket is fixedly connected to the fixing ring, the outer side of the fixing ring is threaded through and connected to the second bolt, and the dial indicator is inserted through and connected to the fixing ring.
[0008] Preferably, the support includes a straight rod.
[0009] Preferably, the bracket includes an L-shaped rod and a crossbar, with the crossbar fixedly connected to one end of the L-shaped rod.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: In use, the first sleeve is placed on the outside of the tube being measured, and then the second sleeve is screwed on. The second sleeve is threaded to the first sleeve, and the clamping block is pushed along the inclined surface by the push ring to clamp and fix the tube. Then, one end of the straight rod is inserted into the fixing block and the first bolt is screwed into the pin hole to fix the straight rod. Then, the dial indicator is inserted through the fixing ring at one end of the straight rod and tightened with the second bolt so that the contact end of the dial indicator is in contact with the outer wall of the tube. Through the bearing setting, the fixing block is rotated. During the rotation, the dial indicator detects the coaxiality of the tube.
[0011] In use, the first sleeve is placed on the outside of the tube being measured. Then, the second sleeve is screwed on and connected to the first sleeve by threads. The clamping block is pushed along the inclined surface by the push ring to clamp and fix the tube. Then, the L-shaped rod is inserted into the fixing block and fixed with the first bolt to fix the L-shaped rod. Then, the dial indicator is fixed to one end of the crossbar, with the contact end of the dial indicator in contact with the inner wall of the tube. Then, the fixing block is rotated to detect the coaxiality of the inner wall of the tube through the dial indicator.
[0012] This measuring tool has a wide range of applicability and is easy to carry. It can be used to measure the coaxiality of the inner and outer diameters of tubes, and can also measure different positions on the outer wall of tubes. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the structure of the bearing and the fixing block used in conjunction with this utility model;
[0015] Figure 3 This is a schematic diagram of the structure of the second sleeve and the push ring used in conjunction with this utility model;
[0016] Figure 4 This is a schematic diagram of the structure of the inclined surface and the groove used in conjunction with this utility model;
[0017] Figure 5 This is a schematic diagram of the L-shaped rod structure of this utility model;
[0018] Figure 6 This is a schematic diagram of the structure of the L-shaped rod and the crossbar used in conjunction with this utility model.
[0019] In the diagram: 1. First sleeve; 2. Threaded groove; 3. Second sleeve; 4. Push ring; 5. Inclined surface; 6. Slide groove; 7. Slider; 8. Clamping block; 9. Bearing; 10. Fixing block; 11. Bracket; 12. Pin hole; 13. First bolt; 14. Fixing ring; 15. Dial indicator; 16. Second bolt; 17. Straight rod; 18. L-shaped rod; 19. Crossbar. Detailed Implementation
[0020] 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.
[0021] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.
[0022] Example 1
[0023] Please see Figure 1-4This utility model discloses a pipe coaxiality testing gauge structure, comprising: a first sleeve 1 sleeved on the outside of the pipe body; a threaded groove 2 on the outside of the first sleeve 1; a second sleeve 3 threadedly connected to the outside of the threaded groove 2; a push ring 4 fixedly connected to the inside of the second sleeve 3; an inclined surface 5 on the inside of the first sleeve 1; a clamping mechanism on the inside of the first sleeve 1, comprising a sliding groove 6, a slider 7, and a clamping block 8; a sliding groove 6 on the inside of the inclined surface 5; a slider 7 slidably connected to the inside of the sliding groove 6; a clamping block 8 fixedly connected to the outside of the slider 7; a bearing 9 fixedly connected to the outside of the first sleeve 1; a fixing block 10 fixedly connected to the outside of the outer ring of the bearing 9; a bracket 11 on one side of the fixing block 10; a pin hole 12 on the outside of one end of the bracket 11; and a first bolt 13 threadedly connected to the top of the fixing block 10. A dial indicator 15 is provided at one end of the bracket 11. An installation mechanism is provided at the connection between the dial indicator 15 and the bracket 11. The bracket 11 includes a straight rod 17. In use, the first sleeve 1 is sleeved on the outside of the tube being measured. Then, the second sleeve 3 is screwed on. The second sleeve 3 is threadedly connected to the first sleeve 1. The clamping block 8 is pushed along the inclined surface 5 by the push ring 4 to clamp and fix the tube. Then, one end of the straight rod 17 is inserted into the fixing block 10 and the first bolt 13 is screwed into the pin hole 12 to fix the straight rod 17. Then, the dial indicator 15 is inserted through the fixing ring 14 at one end of the straight rod 17 and tightened with the second bolt 16 so that the contact end of the dial indicator 15 is in contact with the outer wall of the tube. The fixing block 10 is rotated through the bearing 9. During the rotation, the dial indicator 15 detects the coaxiality of the tube.
[0024] Furthermore, there are three clamping blocks 8. The clamping blocks 8 are wedge-shaped structures, and the inclined surfaces of the clamping blocks 8 are in contact with the inclined surfaces 5.
[0025] Furthermore, one end of the bracket 11 is inserted into the fixing block 10, and the fixing block 10 is rotatably connected to the first sleeve 1 through the bearing 9.
[0026] Furthermore, the mounting mechanism includes a fixing ring 14 and a second bolt 16. One end of the bracket 11 is fixedly connected to the fixing ring 14, and the outer side of the fixing ring 14 is threadedly connected to the second bolt 16. The dial indicator 15 is inserted through the fixing ring 14.
[0027] Working principle: In use, the first sleeve 1 is fitted onto the outside of the tube being measured, and then the second sleeve 3 is screwed on. The second sleeve 3 is threadedly connected to the first sleeve 1, and the clamping block 8 is pushed along the inclined surface 5 by the push ring 4 to clamp and fix the tube. Then, one end of the straight rod 17 is inserted into the fixing block 10, and the first bolt 13 is screwed into the pin hole 12 to fix the straight rod 17. Then, the dial indicator 15 is inserted through the fixing ring 14 at one end of the straight rod 17, and then tightened with the second bolt 16 so that the contact end of the dial indicator 15 is in contact with the outer wall of the tube. Through the bearing 9, the fixing block 10 is rotated. During the rotation, the dial indicator 15 detects the coaxiality of the tube.
[0028] Example 2
[0029] Unlike the embodiments described above, please refer to... Figure 5-6 To facilitate the detection of internal coaxiality, the bracket 11 includes an L-shaped rod 18 and a crossbar 19. The crossbar 19 is fixedly connected to one end of the L-shaped rod 18. In use, the first sleeve 1 is fitted onto the outside of the tube being measured, and then the second sleeve 3 is screwed on. The second sleeve 3 is threadedly connected to the first sleeve 1, and the clamping block 8 is pushed along the inclined surface 5 by the push ring 4 to clamp and fix the tube. Then, the L-shaped rod 18 is inserted into the fixing block 10 and fixed with the first bolt 13 to fix the L-shaped rod 18. Then, the dial indicator 15 is fixed to one end of the crossbar 19, and the contact end of the dial indicator 15 contacts the inner wall of the tube. Then, the fixing block 10 is rotated, and the coaxiality of the inner wall of the tube is detected by the dial indicator 15.
[0030] Working principle: In use, the first sleeve 1 is placed on the outside of the tube being measured, and then the second sleeve 3 is screwed on. The second sleeve 3 is threaded to the first sleeve 1, and the clamping block 8 is pushed along the inclined surface 5 by the push ring 4 to clamp and fix the tube. Then, the L-shaped rod 18 is inserted into the fixing block 10 and fixed with the first bolt 13 to fix the L-shaped rod 18. Then, the dial indicator 15 is fixed to one end of the crossbar 19, and the contact end of the dial indicator 15 contacts the inner wall of the tube. Then, the fixing block 10 is rotated, and the coaxiality of the inner wall of the tube is detected by the dial indicator 15.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A pipe coaxiality testing gauge structure, comprising a first sleeve (1) fitted onto the outside of the pipe body, characterized in that: The first sleeve (1) has a threaded groove (2) on its outer side, and a second sleeve (3) is threadedly connected to the outer side of the threaded groove (2). A push ring (4) is fixedly connected to the inner side of the second sleeve (3). The first sleeve (1) has an inclined surface (5) on its inner side. A clamping mechanism is provided on the inner side of the first sleeve (1). The clamping mechanism includes a sliding groove (6), a slider (7), and a clamping block (8). The sliding groove (6) is opened on the inner side of the inclined surface (5). The slider (7) is slidably connected to the inner side of the sliding groove (6). A clamping block (8) is fixedly connected to the outside of the first sleeve (1), a bearing (9) is fixedly connected to the outside of the outer ring of the bearing (9), a fixing block (10) is fixedly connected to the outside of the outer ring of the bearing (9), a bracket (11) is provided on one side of the fixing block (10), a pin hole (12) is opened on the outside of one end of the bracket (11), a first bolt (13) is threaded through the top of the fixing block (10), a dial indicator (15) is provided at one end of the bracket (11), and an installation mechanism is provided at the connection between the dial indicator (15) and the bracket (11).
2. The pipe coaxiality testing gauge structure according to claim 1, characterized in that: The clamping block (8) is provided in three parts. The clamping block (8) is a wedge structure. The inclined surface of the clamping block (8) is in contact with the inclined surface (5).
3. The pipe coaxiality testing gauge structure according to claim 1, characterized in that: One end of the bracket (11) is inserted into the fixing block (10), and the fixing block (10) is rotatably connected to the first sleeve (1) through the bearing (9).
4. The pipe coaxiality testing gauge structure according to claim 1, characterized in that: The mounting mechanism includes a fixing ring (14) and a second bolt (16). One end of the bracket (11) is fixedly connected to the fixing ring (14). The outer side of the fixing ring (14) is threaded through and connected to the second bolt (16). The dial indicator (15) is inserted through and connected to the fixing ring (14).
5. The pipe coaxiality testing gauge structure according to claim 1, characterized in that: The bracket (11) includes a straight rod (17).
6. The pipe coaxiality testing gauge structure according to claim 1, characterized in that: The bracket (11) includes an L-shaped rod (18) and a crossbar (19), with the crossbar (19) fixedly connected to one end of the L-shaped rod (18).