Stabilizing device for pressure pipeline detection coil

Abstract

The invention relates to the technical field of train brake pressure pipeline detection, in particular to a stabilizing device for a pressure pipeline detection coil, which comprises a fixing block arranged on the outer side of the upper half part of a pipeline; the arc-shaped positioning parts are symmetrically arranged at the two ends of the fixing block and connected with the fixing block through a telescopic mechanism, and the free ends of the two arc-shaped positioning parts extend downwards to the outer side of the lower half portion, away from the fixing block, of the pipeline and can be driven by the telescopic mechanism to move relatively so as to clamp the pipeline; the elastic buffering mechanism is mounted on the side, facing the pipeline, of the fixing block, and the elastic buffering mechanism and the free ends of the two arc-shaped positioning parts jointly form multi-point wrapping positioning on the pipeline; and the detection coil clamping assembly is fixedly mounted in the middle of the fixed block and can clamp eddy current magnetic field detection coils of various specifications. According to the invention, the problem of keeping stability when the eddy current detection coil moves along the axial direction and the circumferential direction of the pressure pipeline can be effectively solved, so that the detection process is more stable, and the defect position in the pipeline can be accurately positioned.

Description

Technical Field

[0001] The present invention relates to the technical field of train brake pressure pipeline detection, and in particular to a stabilizing device for a pressure pipeline detection coil. Background Art

[0002] Eddy current testing utilizes electromagnetic induction between an electromagnetic field and metal, and is a non-contact, non-destructive testing method used in industry. Specifically, alternating current is passed through a coil. Under certain conditions, the current remains constant. If the coil is brought close to the workpiece being tested, eddy currents are induced within the workpiece, causing the coil current to change. Because the magnitude of the eddy currents varies depending on the defects within the workpiece, changes in the coil current can reflect defects within the pipeline.

[0003] At present, for the inspection of train brake pressure pipes, eddy current detection coils available on the market are generally used, and the operator is required to hold the detection coil in hand for mobile inspection. During the inspection process, the inspection surface usually needs to be close to the surface of the pressure pipe, and the operator needs to hold the detection coil against the pressure pipe for a long time for mobile inspection, which is labor-intensive. During operation, the coil for detecting eddy current induction is likely to move away from the surface of the pressure pipe, resulting in ineffective flaw detection. At the same time, the existing pressure pipe inspection stabilization device can only move along the axial direction of the pipe, and during the movement, the distance between the eddy current detection coil and the outer surface of the pipe cannot remain stable, further causing detection errors. At the same time, the inspection of the pressure pipe needs to cover the entire pipe. During this process, the detection coil needs to be rotated to ensure that the eddy current detection coil surrounds the pipe. The detection coil in the existing technology is difficult to realize the detection by rotating around the axis of the pipe, or the rotation process is unstable and easy to fall off, and there is a problem of large changes in the distance between the detection coil and the outer surface of the pipe. Summary of the Invention

[0004] (1) Technical issues to be solved

[0005] The present invention provides a stabilizing device for a pressure pipeline detection coil, aiming to solve the problem of how to maintain stability when the eddy current detection coil moves axially and circumferentially along the pressure pipeline.

[0006] (2) Technical solution

[0007] In order to achieve the above-mentioned object, the present invention provides a stabilizing device for a pressure pipeline detection coil, comprising:

[0008] A fixed block, located on the outside of the upper half of the pipe;

[0009] Arc-shaped positioning parts are symmetrically arranged at both ends of the fixing block and connected to the fixing block through a telescopic mechanism. The free ends of the two arc-shaped positioning parts extend downward to the outside of the lower half of the pipeline away from the fixing block, and can move relative to each other under the drive of the telescopic mechanism to clamp the pipeline;

[0010] An elastic buffer mechanism is installed on the side of the fixing block facing the pipeline, and together with the free ends of the two arc-shaped positioning parts forms a multi-point wrapping positioning for the pipeline;

[0011] The detection coil clamping assembly is fixedly installed in the middle of the fixed block and can clamp eddy current magnetic field detection coils of various specifications.

[0012] Optionally, the telescopic mechanism includes a fixed tube and a movable rod, one end of the fixed tube is fixedly connected to the end of the fixed block, and the other end is movably sleeved on the movable rod;

[0013] A radial threaded hole is provided at one end of the fixing tube away from the fixing block. A tightening screw is threadedly connected to the threaded hole. The tightening screw can tighten the movable rod to limit its axial movement along the fixing tube.

[0014] Optionally, the fixed tube and the movable rod are made of lightweight material, preferably aluminum alloy;

[0015] Optionally, the elastic buffer mechanism is selected from a double-layer spring buffer form or a single spring plus a damper form.

[0016] Optionally, the elastic buffer mechanism includes a support rod, a first spring, a second spring and an auxiliary roller;

[0017] A mounting hole is provided at the bottom of the fixing block, an annular baffle is fixedly installed at the opening of the mounting hole, and the inner hole diameter of the annular baffle is smaller than the diameter of the mounting hole;

[0018] The top of the support rod has a circular baffle, the middle section is provided with an adjusting thread, the bottom end is installed with the auxiliary roller, the first spring is provided between the circular baffle and the bottom of the mounting hole, the second spring is provided between the circular baffle and the annular baffle, and the adjusting thread is threadedly connected to the adjusting nut.

[0019] Optionally, the auxiliary roller is an elastic universal wheel with a brake.

[0020] Optionally, the detection coil clamping assembly includes a first clamping block, a second clamping block and a locking bolt provided on a fixing seat;

[0021] The fixing seat is arranged at the middle position of the front side of the fixing block and is fixedly connected to the fixing block;

[0022] The first clamping block is arranged on a side of the fixing seat away from the fixing block and is slidably connected to the fixing seat. The second clamping block is arranged on a side of the fixing seat away from the fixing block and is slidably connected to the fixing seat. The first clamping block and the second clamping block can move closer or farther away from each other to clamp or release the detection coil. The first clamping block and the second clamping block are connected by the locking bolt.

[0023] Optionally, a handle is fixedly mounted on a side of the fixed block opposite to the detection coil clamping assembly.

[0024] Optionally, a ball is embedded on the side of the free end of the arc-shaped positioning portion facing the pipe, and the ball can roll freely along the side of the pipe.

[0025] Optionally, the arc-shaped positioning portion is an arc-shaped elastic sheet structure.

[0026] (3) Beneficial effects

[0027] The stabilizing device for the pressure pipeline detection coil proposed in the present invention symmetrically arranges the arc-shaped positioning part on both sides of the fixed block through a telescopic mechanism, so that the arc-shaped positioning part can adjust the clamping range under the action of the telescopic mechanism to adapt to pipeline models of various specifications; at the same time, this telescopic function helps to quickly clamp the pipeline. The free end of the arc-shaped positioning part extends downward to the lower half of the pipeline, forming a full circumferential constraint through a wrapping angle of more than 180°, which can improve the stability of the clamping and avoid the problem of the detection coil easily slipping when rotating to the bottom or side of the pipeline. The elastic buffer mechanism mainly cooperates with the free end of the arc-shaped positioning part to form multi-point contact with the pipeline to provide better support. At the same time, the elastic buffer mechanism can itself have a certain elastic adjustment function, which allows the fixed block to avoid certain vibrations during movement, improves stability, and makes the detection data of the detection coil more stable, so as to facilitate the analysis of the defect location in the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of the stabilization device for the pressure pipeline detection coil;

[0029] Figure 2 It is a schematic diagram of the connection between the elastic buffer mechanism and the fixed block.

[0030] [Description of Reference Numerals]

[0031] 1: Fixed block; 2: Arc-shaped positioning part; 21: Ball; 3: Elastic buffer mechanism; 31: Support rod; 311: Circular baffle; 32: First spring; 33: Second spring; 34: Auxiliary roller; 4: Detection coil clamping assembly; 41: First clamping block; 42: Second clamping block; 43: Locking bolt; 5: Telescopic mechanism; 51: Fixed tube; 52: Movable rod; 6: Pipeline; 7: Tightening screw; 8: Annular baffle; 9: Adjusting nut; 10: Detection coil. DETAILED DESCRIPTION

[0032] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0033] This embodiment provides a stabilizing device for a pressure pipeline detection coil, such as Figure 1 As shown, it includes: a fixed block 1, which is arranged on the outside of the upper half of the pipe 6; an arc-shaped positioning part 2, which is symmetrically arranged at both ends of the fixed block 1 and connected to the fixed block 1 through a telescopic mechanism 5, and the free ends of the two arc-shaped positioning parts 2 extend downward to the outside of the pipe 6 away from the lower half of the fixed block 1, and can move relative to each other under the drive of the telescopic mechanism 5 to clamp the pipe 6; an elastic buffer mechanism 3, which is installed on the side of the fixed block 1 facing the pipe 6, and together with the free ends of the two arc-shaped positioning parts 2, forms a multi-point wrapping positioning for the pipe 6; a detection coil clamping assembly 4, which is fixedly installed in the middle of the fixed block 1 and can clamp eddy current magnetic field detection coils 10 of various specifications.

[0034] What needs to be explained in the above structure is that the fixed block 1 is a rectangular parallelepiped structure, and of course it can also be a cylindrical structure. In order to ensure the overall lightweight, it is preferably a frame structure welded with high-strength plastic or aluminum alloy plates. The elastic buffer mechanism 3 is installed on the side of the fixed block 1 facing the pipe 6, and together with the free ends of the two arc-shaped positioning parts 2, forms a multi-point wrapping positioning for the pipe 6. The multi-point wrapping positioning here specifically means that the free ends of the two arc-shaped positioning parts 2, the contact points of the elastic buffer mechanism 3 and the pipe 6 are distributed on the circumference of the pipe 6 to form multiple contact points, especially the extension structure of the free end of the arc-shaped positioning part 2 can cover the lower half of the pipe 6, and form a full circumferential constraint through a wrapping angle of more than 180°, which is used to prevent the detection coil 10 from falling off during the rotation around the axis of the pipe 6.

[0035] The pressure pipeline 6 detection coil 10 stabilization device provided in this embodiment adopts the coordinated action of the fixed block 1, the arc-shaped positioning part 2 and the elastic buffer mechanism 3 to form multi-point wrapping positioning on the circumference of the pipeline 6, wherein the free end of the arc-shaped positioning part 2 extends to the lower half of the pipeline 6, and combined with the fixed block 1 to form a full-circumferential constraint of more than 180°, effectively preventing the detection coil 10 from slipping during rotation; the arc-shaped positioning part 2 realizes continuous adjustment of the clamping range through the telescopic mechanism 5 to adapt to the requirements of pipelines 6 with different diameters; the elastic buffer mechanism 3 and the free end of the arc-shaped positioning part 2 together constitute a flexible contact interface, which can absorb mechanical vibrations and avoid damage to the anti-corrosion layer of the pipeline 6; the fixed block 1 adopts a high-strength plastic or aluminum alloy frame structure, which achieves lightweight while ensuring strength, is easy to operate, and reduces the labor intensity of workers; the detection coil clamping assembly 4 adopts a modular design to support rapid replacement of eddy current magnetic field detection coils 10 of various specifications.

[0036] In this embodiment, the telescopic mechanism 5 includes a fixed tube 51 and a movable rod 52. One end of the fixed tube 51 is fixedly connected to the end of the fixed block 1, and the other end is movably connected to the movable rod 52. A radial threaded hole is provided at the end of the fixed tube 51 away from the fixed block 1, and a tightening screw 7 is threadedly connected to the threaded hole. The tightening screw 7 can tighten the movable rod 52 to limit its axial movement along the fixed tube 51. It should be noted here that the fixed tube 51 and the movable rod 52 are made of lightweight material, such as aluminum alloy. The movable rod 52 is moved manually, and after the movement is adjusted, the tightening screw 7 is used to fix the movable rod 52. The fixed tube 51 and the movable rod 52 are made of lightweight aluminum alloy, which reduces the overall weight while ensuring structural strength to facilitate manual movement of the movable rod 52. The adjustment process is simple and intuitive, and can quickly adapt to the detection requirements of different pipe diameters; the setting of the tightening screw 7 provides a reliable locking mechanism to ensure that the movable rod 52 is firmly fixed after being adjusted into place, avoiding displacement during the detection process; the overall structural design is simple and efficient, taking into account both adjustment flexibility and operational convenience, and significantly improving the practicality and detection efficiency of the device.

[0037] In this embodiment, the elastic buffer mechanism 3 adopts a double-layer spring buffer form, of course, a single spring plus a damper form can also be used.

[0038] Specifically, the elastic buffer mechanism 3 includes a support rod 31, a first spring 32, a second spring 33, and an auxiliary roller 34. A mounting hole is provided at the bottom of the fixed block 1, and an annular baffle 8 is fixedly installed at the opening of the mounting hole. The inner diameter of the annular baffle 8 is smaller than the diameter of the mounting hole. The top of the support rod 31 has a circular baffle 311, an adjustment thread is provided in the middle section, and an auxiliary roller 34 is installed at the bottom. The first spring 32 is provided between the circular baffle 311 and the bottom of the mounting hole, and the second spring 33 is provided between the circular baffle 311 and the annular baffle 8. The adjustment thread is threadedly connected to the adjustment nut 9. Among them, the mounting hole at the bottom of the fixed block 1 and the circular baffle 311 at the top of the support rod 31 are clearance-matched, so that the support rod 31 can slide up and down in the mounting hole. A connecting hole is provided on the annular baffle 8, and the annular baffle 8 is fixed to the bottom of the fixed block 1 using screws or bolts. The second spring 33 is sleeved on the support rod 31 and is located between the circular baffle 311 and the annular baffle 8. The range of up and down movement of the support rod 31 is adjusted by adjusting the nut in the middle section of the movable rod 52 to better adapt to the support requirements of the detection coil 10.

[0039] In this embodiment, the auxiliary roller 34 is an elastic universal wheel with a brake. The elastic universal wheel has a certain buffering contact with the surface of the pressure pipe 6, and the elastic contact is tighter, ensuring that the entire device can move well along the pressure pipe 6, realizing mobile flaw detection operation.

[0040] In this embodiment, the detection coil clamping assembly 4 includes a first clamping block 41 and a second clamping block 42 disposed on a fixed base. The fixed base is fixed to the front center of the fixed block 1 by screws. The first clamping block 41 is disposed on the side of the fixed base facing away from the fixed block 1 and is slidably connected to the fixed base. The second clamping block 42 is disposed on the side of the fixed base facing away from the fixed block 1 and is slidably connected to the fixed base. The first clamping block 41 and the second clamping block 42 can move relative to each other to move closer or further apart to clamp or release the detection coil 10. The first clamping block 41 and the second clamping block 42 are connected by a locking bolt 43. The fixing seat is fixedly connected to the fixing block 1 to ensure the stability of the overall structure; the first clamping block 41 and the second clamping block 42 are slidably connected to the fixing seat and can move relative to each other to achieve rapid clamping or release of the detection coil 10, which is simple and efficient to operate; the setting of the locking bolt 43 provides a reliable fixing method to ensure that the detection coil 10 is stable and immobile after clamping, avoiding displacement or loosening during the detection process; the modular design supports the rapid replacement of detection coils 10 of various specifications to adapt to different detection needs, thereby improving the versatility and detection efficiency of the device; the overall structure is compact and fully functional, with both easy operation, clamping stability and applicability flexibility, which significantly optimizes the performance and usage experience of the detection device.

[0041] In this embodiment, a handle is fixedly mounted on the side of the fixed block 1 opposite the detection coil clamping assembly 4. This handle allows for easy adjustment of the device's position and angle, ensuring precise contact between the detection coil 10 and the surface of the pipe 6, thereby improving the accuracy and reliability of the test results. Furthermore, the handle effectively reduces operator fatigue, improving the efficiency and comfort of the test operation, and further enhancing the user experience of the device.

[0042] In this embodiment, the free end of the arc-shaped positioning portion 2 facing the side of the pipe 6 is embedded with balls 21, which can roll freely along the side of the pipe 6. Each arc-shaped positioning portion 2 has two groups of balls 21, and the number of groups used can be appropriately selected according to the diameter of the pipe 6.

[0043] In this embodiment, the arc-shaped positioning portion 2 is an arc-shaped elastic sheet structure. Specifically, it is a curved plate made of elastic metal material. It must have good flexibility and be able to generate uniform contact pressure on the surface of the pipe 6 to avoid damage to the anti-corrosion layer of the pipe 6 due to localized excessive force. At the same time, the elastic sheet can effectively absorb mechanical vibration and deformation of the pipe 6 during the detection process, reducing the impact of external interference on the detection results.

[0044] The specific use process of the stabilization device of the pressure pipeline detection coil in the above example is as follows:

[0045] First, manually pull the movable rods 52 of the two telescopic mechanisms 5 out of the fixed tube 51, so that the two arc-shaped positioning parts 2 are separated from each other to the maximum position, and the entire device is U-shaped and clamped from top to bottom on the upper part of the pressure pipe 6. Then, adjust the two movable rods 52 to retract, so that the balls 21 inside the free ends of the two arc-shaped positioning parts 2 roll against the surface of the lower half of the pressure pipe 6, so that the fixed block 1 and the free ends of the two arc-shaped positioning parts 2 half-enclose the pressure pipe 6, with an angle of more than 180 degrees to prevent the entire device from falling off the pressure pipe 6.

[0046] Secondly, the surface of the pressure pipe 6 is inspected by the detection coil 10 assembled at the detection coil clamping assembly 4. During the inspection process, the fixed block 1 is manually moved along the axial direction of the pressure pipe 6 or rotated along the circumferential direction of the pressure pipe 6. The detection coil 10 can stably inspect the surface of the pressure pipe 6.

[0047] It should be noted that: the balls on the inner side of the free end of the arc-shaped positioning portion can be designed in multiple groups, ensuring that at least one group can have good rolling contact with the surface of the pressure pipe.

[0048] In this embodiment, all directional indications (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0049] In addition, the descriptions of "first," "second," and so on in this embodiment are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this embodiment, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0050] In this embodiment, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0051] It should be understood that the above description of the specific embodiments of the present invention is merely for the purpose of illustrating the technical approach and features of the present invention. Its purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. However, the present invention is not limited to the above-described specific embodiments. Any changes or modifications made within the scope of the claims of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A stabilizing device for a pressure pipeline detection coil, characterized in that: include: A fixed block (1) is provided on the outer side of the upper half of the pipe (6); Arc-shaped positioning parts (2) are symmetrically arranged at both ends of the fixing block (1) and connected to the fixing block (1) via a telescopic mechanism (5); the free ends of the two arc-shaped positioning parts (2) extend downward to the outside of the lower half of the pipe (6) away from the fixing block (1), and can move relative to each other under the drive of the telescopic mechanism (5) to clamp the pipe (6); An elastic buffer mechanism (3) is installed on the side of the fixed block (1) facing the pipeline (6), and together with the free ends of the two arc-shaped positioning parts (2) forms a multi-point wrapping positioning for the pipeline (6); The detection coil clamping assembly (4) is fixedly mounted on the middle portion of the fixed block (1) and is capable of clamping eddy current magnetic field detection coils of various specifications.

2. The stabilizing device for a pressure pipeline detection coil according to claim 1, characterized in that: The telescopic mechanism (5) comprises a fixed tube (51) and a movable rod (52); one end of the fixed tube (51) is fixedly connected to the end of the fixed block (1), and the other end is movably sleeved on the movable rod (52); A radial threaded hole is provided at one end of the fixed tube (51) away from the fixed block (1), and a tightening screw (7) is threadedly connected to the threaded hole. The tightening screw (7) can tighten the movable rod (52) to limit its axial movement along the fixed tube (51).

3. The stabilizing device for the pressure pipeline detection coil according to claim 2, characterized in that: The fixed tube (51) and the movable rod (52) are made of lightweight material, preferably aluminum alloy.

4. The stabilizing device for a pressure pipeline detection coil according to claim 1, characterized in that: The elastic buffer mechanism (3) is selected from a double-layer spring buffer form or a single spring plus a damper form.

5. The stabilizing device for a pressure pipeline detection coil according to claim 4, characterized in that: The elastic buffer mechanism (3) comprises a support rod (31), a first spring (32), a second spring (33) and an auxiliary roller (34); A mounting hole is provided at the bottom of the fixing block (1), and an annular baffle (8) is fixedly installed at the opening of the mounting hole, wherein the inner hole diameter of the annular baffle (8) is smaller than the diameter of the mounting hole; The top end of the support rod (31) is provided with a circular baffle (311), the middle section is provided with an adjusting thread, and the bottom end is provided with the auxiliary roller (34); the first spring (32) is provided between the circular baffle (311) and the bottom of the mounting hole; the second spring (33) is provided between the circular baffle (311) and the annular baffle (8); and the adjusting thread is threadedly connected to an adjusting nut (9).

6. The stabilizing device for a pressure pipeline detection coil according to claim 4, characterized in that: The auxiliary roller (34) is an elastic universal wheel with a brake.

7. The stabilizing device for a pressure pipeline detection coil according to claim 1, characterized in that: The detection coil clamping assembly (4) comprises a first clamping block (41), a second clamping block (42) and a locking bolt (43) arranged on a fixing seat; The fixing seat is arranged at the middle position of the front side of the fixing block (1) and is fixedly connected to the fixing block (1); The first clamping block (41) is arranged on a side of the fixing seat away from the fixing block (1) and is slidably connected to the fixing seat. The second clamping block (42) is arranged on a side of the fixing seat away from the fixing block (1) and is slidably connected to the fixing seat. The first clamping block (41) and the second clamping block (42) can move relatively close to or away from each other to clamp or release the detection coil. The first clamping block (41) and the second clamping block (42) are connected by the locking bolt (43).

8. The stabilizing device for a pressure pipeline detection coil according to claim 1, characterized in that: A handle is fixedly mounted on a side of the fixed block (1) opposite to the detection coil clamping assembly (4).

9. The stabilizing device for a pressure pipeline detection coil according to any one of claims 1 to 8, characterized in that: A ball (21) is embedded on the side of the free end of the arc-shaped positioning portion (2) facing the pipe (6), and the ball (21) can roll freely along the side of the pipe (6).

10. The stabilizing device for a pressure pipeline detection coil according to claim 9, characterized in that: The arc-shaped positioning portion (2) is an arc-shaped elastic sheet structure.

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