Weld joint positioning device suitable for flattening test of welded pipe
By designing a weld positioning device including base plate, support column, line position plate and measuring device, the problem of difficulty in accurately finding the weld position in the flattening test is solved, and rapid and accurate weld positioning is achieved, which significantly improves the Test efficiency and result accuracy.
Patent Information
- Application Number
- CN202420248379.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-01
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-02-01
AI Technical Summary
The lack of effective weld positioning devices in existing flattening tests makes it difficult to accurately find the weld position, resulting in time-consuming and laborious tests and inaccurate results.
A weld positioning device including a base plate, support column, line position plate and measuring device was designed. By measuring the radius of the welded pipe and fixing the line position plate with fasteners, ensuring that the weld is aligned with the line position plate, achieving rapid and accurate results. calibrate the weld position.
Through the use of this device, weld angle can be quickly positioned, significantly accelerated the test speed, and ensured the accuracy and reliability of experimental results.
Smart Images
Figure CN222364854U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flattening test auxiliary devices, in particular to a weld positioning device suitable for a flattening test of welded pipes. Background Art
[0002] The flattening test is a test method used to test the deformation performance of metal pipes when flattened to a specified size and to show their defects. For welded pipes, the flattening test is one of the more accurate means of testing their performance, and the test results can be obtained quickly. In order to verify the deformation resistance of the weld position, GB / T 12771-2019, GB / T 24593-2018 and other standards stipulate that when the welded pipe is subjected to the flattening test, the weld position should be at a 90° position in the same direction of the applied force, and no cracks or fissures should appear after the test.
[0003] Currently, there is no corresponding device to align the weld. During the test, the weld angle can only be estimated by visual inspection, or the angle must be adjusted continuously during flattening. This is time-consuming and labor-intensive and often results in the weld position deviation not being 90°, wasting manpower and material resources, and the results are still inaccurate. Utility Model Content
[0004] The utility model aims at the deficiencies in the background technology and provides a weld positioning device suitable for the flattening test of welded pipes. The utility model provides a flattening test auxiliary device which has a simple structure and low cost and can quickly locate the weld angle, speed up the test, and ensure that the experimental results are more accurate and reliable.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a weld positioning device suitable for a flattening test of welded pipes, comprising a base plate, a support column vertically fixed to the base plate, a line position plate and a fastener that can fix the line position plate to the support column movably connected to the support column, and also comprising a measuring device for measuring the height of the line position plate.
[0006] By adopting the above technical solution, the diameter of the welded pipe to be flattened is first determined. In order to ensure that the weld position of the welded pipe should be at a position 90° to the direction of force during the test, the weld height should be the radius of the welded pipe. With the help of the measuring device attached to the device, the line plate height is adjusted to the radius of the welded pipe and fixed to the support column by fasteners. The calibrated device is placed on the base of the flattening test machine, and then the welded pipe to be tested is placed next to the device, the weld position is adjusted to align with the line plate, and finally the device is removed and the flattening test is started. The device assists in locating the weld position of the welded pipe, speeds up the test, and ensures more accurate experimental results.
[0007] The utility model is further configured as follows: a through hole is provided in the middle of the line position plate, and the support column passes through the through hole.
[0008] Preferably, the surface of the support column is provided with an external thread, and the fastener is a nut and is threadably connected to the support column.
[0009] Preferably, two nuts are provided, and the line positioning plate is arranged between the two nuts.
[0010] Preferably, the measuring device is a ruler arranged on one side of the line position plate and vertically arranged on the bottom plate.
[0011] The utility model is further configured as follows: the fastener is a slip ring slidably connected to the support column, and a fastening bolt that can fix the slip ring to the surface of the support column is arranged on the outer circumference of the slip ring.
[0012] Preferably, the support column is provided with a scale.
[0013] Preferably, the line position plate is horizontally arranged and fixed to the end face of the slip ring.
[0014] In general, the above technical solutions conceived by the utility model can achieve the following beneficial effects compared with the prior art:
[0015] 1. When using a welded pipe for a flattening test, the weld position should be located at a position 90° to the direction of the applied force. The weld height is obtained as the radius of the welded pipe. The height of the line plate is calibrated to the radius of the welded pipe with the help of the cooperation of the bottom plate, support column, line plate, fasteners and measuring device of the weld positioning device. Finally, the weld is aligned with the line plate to complete the rapid alignment of the welded pipe before the flattening test, which speeds up the test and ensures more accurate experimental results.
[0016] 2. Two measuring devices, a separate scale and a support column with scales, are designed to calibrate the line position plate, with reliable structure and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Attached Figure 1 This is a working state diagram of Embodiment 1 of the utility model;
[0018] Attached Figure 2 This is the overall structure diagram of Embodiment 2 of the present utility model;
[0019] The meaning of the numbers in the figure are: 1. Base plate; 2. Support column; 3. Line position plate; 4. Fastener; 41. Nut; 42. Slip ring; 43. Fastening bolt; 5. Ruler; 6. Scale; 7. Welded pipe; 8. Weld. DETAILED DESCRIPTION
[0020] The following describes the specific implementation of the utility model in detail in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand how to practice the utility model. Although the utility model is described in conjunction with its preferred specific embodiments, these embodiments are only illustrative, rather than limiting the scope of the utility model.
[0021] When the welded pipe 7 is subjected to a flattening test, the weld 8 is required to be located at a position 90° with the direction of the applied force. Currently, there is no corresponding device to align the weld 8. During the test, the angle of the weld 8 can only be estimated by visual inspection, or the angle is adjusted continuously during flattening, which is time-consuming and labor-intensive and often causes the position deviation of the weld 8 to be not 90°, which wastes manpower and material resources, and the result is not accurate. In view of the above situation, the weld positioning device of the utility model is designed.
[0022] Example 1
[0023] like Figure 1 As shown, a weld positioning device suitable for flattening test of welded pipes includes a base plate 1, a support column 2, a line plate 3, a fastener 4, and a measuring device. The support column 2 is vertically fixed to the base plate 1, and the line plate 3 and the fastener 4 are movably connected to the support column 2. After the radius of the welded pipe 7 is determined, the position of the line plate 3 on the support column 2 is adjusted up and down, and the height of the line plate 3 is calibrated with the help of the measuring device, and then the line plate 3 is fixed to the support column 2 by the fastener 4. In this embodiment, as Figure 1 As shown, the fastener 4 can be realized by using a nut 41 in conjunction with the external thread on the support column 2. Of course, other active connections such as buckles, slots, etc. can also be used to realize the function of the fastener 4, which is not limited here. In order to accurately fix the line position plate 3 on the support column 2, the nut 41 is set to be located on the upper and lower end surfaces of the line position plate 3. The nut 41 located below the line position plate 3 mainly supports the line position plate 3 during use and adjusts the line position plate 3 to a specified height during calibration. After the height of the line position plate 3 is calibrated, the nut 41 located above it is tightened downward to fix the line position plate 3 on the support column 2. In this embodiment, the measuring device for calibrating the height of the line position plate 3 is a ruler 5 arranged on one side of the line position plate 3 and vertically arranged on the base plate 1.
[0024] In order to facilitate the active connection between the line position plate 3 and the support column 2, the line position plate 3 can be made of a thin plate with a circular through hole in the geometric center, so that the line position plate 3 is more flexible when adjusted up and down and it is easy to maintain the horizontal posture of the line position plate 3 when it is active and fixed.
[0025] During the use of the present weld locating device, it is necessary to first measure the diameter of the welded pipe 7. At this time, the end face of the welded pipe 7 can be directly abutted against the scale of the ruler 5 for measurement, or it can be measured with the aid of a tape measure, a vernier caliper or other tools. The method used depends on the accuracy requirements during the measurement and whether there are other measuring tools.
[0026] Example 2
[0027] The difference between Example 2 and Example 1 lies in that a fastener 4 of a different structure is used to fix the alignment plate 3, and a measuring device of a different structure is used to calibrate the alignment plate 3.
[0028] like Figure 2 As shown, the support column 2 is a smooth cylinder, the fastener 4 is a slip ring 42 slidably connected to the support column 2, the line position plate 3 is horizontally arranged and fixed to the end face of the slip ring 42, and when the up and down position of the line position plate 3 is adjusted, the slip ring 42 can slide on the surface of the support column 2 to drive the line position plate 3 to move up and down; with the help of the scale 6 engraved on the surface of the support column 2, after the position calibration of the line position plate 3 is completed, the fastening bolts 43 located on the outer circumference of the slip ring 42 are tightened, and the end of the fastening bolts 43 abuts against the surface of the support column 2 to lock the position of the slip ring 42 and the line position plate 3.
[0029] In summary, the working principle of the weld positioning device of the utility model is as follows:
[0030] 1) First measure the diameter of the flattening test welded pipe 7;
[0031] 2) Adjust the height of the line plate 3 to the radius of the welding pipe 7;
[0032] 3) Place the calibrated weld positioning device on the base of the flattening test machine;
[0033] 4) Place the welded pipe 7 next to the weld positioning device, and align the weld 8 with the alignment plate 3;
[0034] 5) Take out the weld positioning device and start the flattening test.
[0035] The utility model uses the flattening test to require that the weld 8 should be located at a position 90° from the direction of the applied force, and the height of the weld 8 is located at the center of the welded pipe 7. Figure 1 As shown, at this time, the force direction of the flattening test is the vertical direction, and the axis connecting the weld 8 and the weld pipe 7 should be in the horizontal direction, that is, the height of the weld 8 is equal to the radius of the weld pipe 7, so that after the weld positioning device line plate 3 is calibrated and fixed, as long as the weld 8 is parallel to the line plate 3, it can be located at 90°. The weld positioning device has a simple structure and low cost, can quickly locate the angle of the weld 8, speed up the test speed, and ensure that the experimental results are more accurate and reliable.
[0036] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A weld positioning device suitable for flattening test of welded pipes, characterized in that: The invention comprises a base plate (1), a support column (2) vertically fixed to the base plate (1), a line position plate (3) movably connected to the support column (2) and a fastener (4) capable of fixing the line position plate (3) to the support column (2), and a measuring device for measuring the height of the line position plate (3).
2. The weld positioning device for the welded pipe flattening test according to claim 1, characterized in that: A through hole is provided in the middle of the line position plate (3), and the support column (2) passes through the through hole.
3. The weld positioning device for the welded pipe flattening test according to claim 2, characterized in that: The surface of the support column (2) is provided with an external thread, and the fastener (4) is a nut (41) and is threadably connected to the support column (2).
4. The weld positioning device for the welded pipe flattening test according to claim 3, characterized in that: Two nuts (41) are provided, and the line position plate (3) is provided between the two nuts (41).
5. The weld positioning device for the welded pipe flattening test according to claim 4, characterized in that: The measuring device is a scale (5) arranged on one side of the line position plate (3) and arranged vertically on the bottom plate (1).
6. The weld positioning device for the welded pipe flattening test according to claim 1, characterized in that: The fastener (4) is a slip ring (42) slidably connected to the support column (2), and a fastening bolt (43) is provided on the outer circumference of the slip ring (42) for fixing the slip ring (42) to the surface of the support column (2).
7. The weld positioning device for the welded pipe flattening test according to claim 6, characterized in that: The support column (2) is provided with a scale (6).
8. The weld positioning device for the welded pipe flattening test according to claim 7, characterized in that: The line position plate (3) is arranged horizontally and fixed to the end surface of the slip ring (42).