Vehicle brake pressure pipeline crack detection device

Abstract

The invention relates to the technical field of rail transit vehicle brake pressure pipeline detection, in particular to a vehicle brake pressure pipeline crack detection device which comprises a shell, a detection assembly, a clamping and positioning assembly and an elastic supporting assembly. The bottom of the shell is arranged on the outer side wall of the pressure pipeline through an elastic supporting assembly, and the top of the shell is connected with a length-adjustable telescopic rod component through a universal hinge joint. A detection assembly is arranged in the shell close to the bottom face, and the detection face of the detection assembly is perpendicular to the radial direction of the pressure pipeline. The clamping and positioning assembly comprises clamping pieces extending along the two ends of the shell respectively, the tail ends of the clamping pieces are rotatably or fixedly connected with clamping arm assemblies, the detection device is installed on the periphery of the pressure pipeline by adjusting the angle between the paired clamping arm assemblies, the overall structure is compact, and the occupied space is small. The telescopic rod is connected to the shell through the universal hinge joint, so that an operator can freely adjust the length and the force application angle of the operating rod, and the operation flexibility is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rail transit vehicle brake pressure pipeline detection, and particularly relates to a rail transit vehicle brake pressure pipeline crack detection device. BACKGROUND

[0002] The rail transit vehicle pressure pipeline is in a harsh environment and the internal transportation medium flow state is complex. Under the combined action of the two, the rail transit vehicle pressure pipeline is usually in a working condition of repeated alternating load, high temperature, high pressure and corrosion, and defects such as local corrosion pits, fatigue cracks, fouling and perforation are easily formed on the inner and outer walls of the pipeline during long-term service. The above conditions will bring safety hazards to vehicle operation, and if they cannot be found and properly handled in time, they may cause the structure of the pressure pipeline to fail, resulting in major safety accidents and economic losses.

[0003] Eddy current detection is a non-contact detection method, which detects the electromagnetic induction between an electromagnetic field and a metal. An alternating current is applied to a coil, and the current passing through the coil is constant under certain conditions. If the coil is placed close to the workpiece to be detected, like a ship in water, eddy current will be induced in the workpiece. The coil current will change due to the influence of eddy current. Since the size of the eddy current is different when there is a defect in the workpiece, the size of the coil current change can reflect whether there is a defect.

[0004] In the prior art, eddy current detection is usually used to check and measure the internal defects of the pressure pipeline. Due to the special shape of the pressure pipeline, the eddy current detection coil needs a corresponding fixator to be fixed on the periphery of the pressure pipeline. In the traditional fixator, an extension rod is usually used in cooperation with a clamping assembly to realize dynamic adaptive clamping of different diameter pipelines, but the fixed device of this structure occupies a large space, and the installation space of the rail transit brake pressure pipeline is limited. During the inspection process, the artificial cannot efficiently install and apply. SUMMARY

[0005] (I) Technical problem to be solved

[0006] The present application provides a rail transit vehicle brake pressure pipeline crack detection device, which is characterized by a length-adjustable extension rod and a rotatable locking clamping assembly, which is designed to solve the problems of space occupation and inconvenient manual operation of the detection device.

[0007] (II) Technical scheme

[0008] In order to achieve the above purpose, the present application provides a rail transit vehicle brake pressure pipeline crack detection probe, which comprises a shell, a detection assembly, a clamping and positioning assembly and an elastic support assembly.

[0009] The bottom of the housing is set on the outer wall of the pressure pipe through the elastic support assembly, and the top is connected to an adjustable telescopic rod component through a universal joint.

[0010] The detection component is disposed inside the housing near the bottom surface, and the detection surface of the detection component is perpendicular to the radial direction of the pressure pipe.

[0011] The clamping and positioning assembly includes clamping pieces extending from both ends of the housing. The ends of the clamping pieces are rotatably or fixedly connected to clamping arm assemblies. The angle between the pair of clamping arm assemblies is adjusted to allow the detection device to be installed around the pressure pipeline.

[0012] A further technical solution is that the pair of clamping pieces are fixedly connected to opposite sides of the housing, with one end fixedly connected to the housing and the other end connected to the clamping arm assembly through a locking mechanism. The locking mechanism can lock the relative position of the clamping arm assembly and the clamping pieces.

[0013] A further technical solution is that the clamping arm assembly includes a clamping arm and a first roller;

[0014] The locking mechanism includes a first connecting hole on the clamping arm, a second connecting hole on the clamping plate corresponding to the first connecting hole, and a locking bolt; the first connecting hole and the second connecting hole are connected by the locking bolt, and the clamping arm can be rotatably or fixedly connected to the clamping plate by adjusting the tightness of the locking bolt.

[0015] A further technical solution is that the elastic support assembly includes a support rod, a spring, and a fixing plate;

[0016] The bottom of the housing has a groove, the fixing plate is fixed to the groove and has a through hole in the middle that is concentric with the groove;

[0017] The support rod slides through the through hole and has an outward flange at the top. A spring is provided between the flange and the fixing plate. One end of the spring is fixed to the flange and the other end is fixed to the fixing plate.

[0018] The bottom of the support rod is provided with a second roller.

[0019] A further technical solution is that a mounting groove is formed at the bottom center of the housing, and the detection component is installed inside the mounting groove.

[0020] A further technical solution is that the detection component includes a magnetic core and a coil, the coil being wound around the periphery of the magnetic core, and the detection component being fixed by bonding the magnetic core to the mounting groove.

[0021] A further technical solution is that the telescopic rod component includes an outer tube, an inner tube, and a locking screw, and the length of the outer tube and the inner tube is adjusted by the locking screw.

[0022] A further technical solution is that the telescopic rod component has a gripping part at the end away from the universal joint, and the gripping part has a cylindrical structure and anti-slip texture on its outer circumference.

[0023] (III) Beneficial Effects

[0024] The beneficial effects of this invention are as follows: By setting clamping plates on both sides of the housing and cooperating with a rotatable and fixed clamping arm assembly to install the detection coil assembly on the outer wall of the pressure pipeline, compared with the traditional structure that adjusts the clamping via a telescopic rod, this device has a more compact overall structure and can be well applied to pipeline inspection in confined spaces such as pressure pipelines in rail vehicles. Simultaneously, to increase the convenience of manual operation, the device is equipped with a telescopic rod at the top of the housing, and the telescopic rod is connected to the housing via a universal joint, allowing the operator to freely adjust the length and force angle of the operating rod. The elastic support assembly provides a certain degree of elastic buffering between the pressure pipeline and the housing, helping to reduce the impact between the detection coil and the pressure pipeline during the movement of the detection device, while also ensuring that the normal direction of the detection surface of the detection assembly always remains along the radial direction of the pressure pipeline, ensuring the stability of the detection results during dynamic detection. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a vehicle brake pressure pipeline crack detection device.

[0026] [Explanation of Labels in the Attached Image]

[0027] 1: Housing; 11: Groove; 2: Detection component; 3: Clamping and positioning component; 31: Clamping piece; 32: Clamping arm component; 321: Clamping arm; 322: First roller; 4: Elastic support component; 41: Support rod; 42: Spring; 43: Fixing plate; 5: Pressure pipe; 6: Universal joint; 7: Telescopic rod component; 8: Locking mechanism; 9: Second roller. Detailed Implementation

[0028] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] This embodiment provides a device for detecting cracks in vehicle brake pressure pipes, such as... Figure 1As shown, the detection device includes a housing 1, a detection component 2, a clamping and positioning component 3, and an elastic support component 4. The bottom of the housing 1 is mounted on the outer wall of the pressure pipe 5 via the elastic support component 4, and the top is connected to an adjustable telescopic rod component 7 via a universal joint 6. The detection component 2 is located inside the housing 1 near the bottom surface, and the detection surface of the detection component 2 is perpendicular to the radial direction of the pressure pipe 5. The clamping and positioning component 3 includes clamping pieces 31 extending from both ends of the housing 1. The ends of the clamping pieces 31 are rotatably or fixedly connected to clamping arm components 32. By adjusting the angle between the paired clamping arm components 32, the detection device can be installed around the pressure pipe 5.

[0030] The housing 1 is made of lightweight alloy or engineering plastic and has multiple empty cavities inside for housing the detection component 2, as well as necessary power modules and signal processing circuits. The bottom of the housing 1 is attached to the outer wall of the pressure pipe 5 to be tested via an elastic support component 4. The elastic support component 4 utilizes the buffering principle of a spring 42 to ensure that the housing 1 and the internal detection component 2 maintain an appropriate distance from the pipe surface, while also buffering vibrations during dynamic testing to ensure the stability of the detection signal. The top of the housing 1 is connected to an adjustable telescopic rod component 7 via a universal joint 6. The telescopic rod component 7 can be a manually adjustable multi-section sleeve rod or an electrically operated push rod. The universal joint 6 allows the operator to adjust the posture and detection position of the detection device at multiple angles within a limited space, greatly improving operational flexibility.

[0031] The detection component 2 is disposed inside the housing 1 and near its bottom surface. The detection surface of the detection component 2 is set to be perpendicular to the radial direction of the pressure pipe 5 to ensure that the detection signal can be incident perpendicularly on the pipe surface and obtain the best signal reflection or reception effect. Preferably, the detection component 2 is an eddy current detection probe, which contains a magnetic core and a detection coil. When the probe is close to the metal pipe, eddy currents can be induced on the pipe surface, and surface cracks can be identified by analyzing the changes in the eddy current field.

[0032] The clamping and positioning assembly 3 is used to reliably fix the entire detection device to the periphery of the pressure pipeline 5. It includes a pair of clamping plates 31 extending from both ends of the housing 1. Each clamping plate 31 is rotatably or fixedly connected to a clamping arm assembly 32 at its end. The clamping arm assembly 32 may be a clamping block with an arcuate concave surface.

[0033] By adjusting the included angle between the paired clamping arm assemblies 32, the device can be adapted to pressure pipes 5 of different diameters. Specifically, when installation is required, the operator places the device on the pipe and uses manual or simple tools to tighten the two clamping arm assemblies 32 inward until their curved surfaces are in close contact with the outer wall of the pipe, thereby firmly holding the device on the pipe.

[0034] In the above scheme, by setting clamping plates 31 on both sides of the housing 1 and cooperating with the rotatable and fixed clamping arm assembly 32, the detection coil assembly is installed on the outer wall of the pressure pipe 5. Compared with the traditional structure that adjusts the clamping by telescopic rod, this device has a more compact overall structure and can be well applied to pipe inspection in the confined space of the pressure pipe 5 of rail vehicles. At the same time, to increase the convenience of manual operation, the device is provided with a telescopic rod on the top of the housing 1, and the telescopic rod is connected to the housing 1 by a universal joint 6, which allows the operator to freely adjust the length and force angle of the operating rod. The elastic support assembly 4 provides a certain elastic buffer between the pressure pipe 5 and the housing 1, which helps to reduce the impact between the detection coil and the pressure pipe 5 during the movement of the detection device. At the same time, it also helps to keep the normal of the detection surface of the detection assembly 2 along the radial direction of the pressure pipe 5, ensuring the stability of the detection results during the dynamic detection process.

[0035] Specifically, in this embodiment, a pair of clamping pieces 31 are fixedly connected to opposite sides of the housing 1, with one end fixedly connected to the housing 1 and the other end connected to a clamping arm assembly 32 via a locking mechanism 8. The locking mechanism 8 can lock the relative position of the clamping arm assembly 32 and the clamping piece 31.

[0036] The paired clamping plates 31 form a rigid support base, allowing the locking mechanism 8 to quickly and accurately adjust the clamping arm assembly 32 to the appropriate position and lock it securely. Secondly, this design gives the device stronger environmental adaptability; because the position of the clamping arm 321 is adjustable and lockable, the device can flexibly adapt to pipes of different diameters or with slight deformation, ensuring that the detection assembly 2 can maintain the set optimal detection posture under various complex working conditions.

[0037] By reasonably selecting the overall length of the clamping plate 31, the space occupied by the entire device can be effectively controlled, making it easier to adjust the clamping arm assembly 32 in a narrow space.

[0038] Specifically, in this embodiment, the clamping arm assembly 32 includes a clamping arm 321 and a first roller 322. The locking mechanism 8 includes a first connecting hole on the clamping arm 321, a second connecting hole on the clamping plate 31 corresponding to the first connecting hole, and a locking bolt; the first connecting hole and the second connecting hole are connected by the locking bolt, and the clamping arm 321 can be rotatably or fixedly connected to the clamping plate 31 by adjusting the tightness of the locking bolt.

[0039] The design of the first and second connecting holes, combined with the locking bolt, allows for a simple and reliable conversion of the connection between the clamping arm assembly 32 and the clamping plate 31 by tightening or loosening the bolt. When the bolt is loosened, the clamping arm 321 can rotate flexibly around the connection point, enabling the device to quickly and smoothly adapt to different pipe diameters. When the bolt is tightened, the clamping arm assembly 32 can be firmly locked in the required precise position, ensuring the stability of the clamping arm 321 and its first roller 322 during subsequent testing.

[0040] Specifically, in this embodiment, the elastic support assembly 4 includes a support rod 41, a spring 42, and a fixing plate 43. The bottom of the housing 1 has a groove 11, and the fixing plate 43 is fixed to the groove 11 with a through hole concentric with the groove 11 in its center. The support rod 41 slides through the through hole, and has an outwardly facing flange at its top. A spring 42 is positioned between the flange and the fixing plate 43, with one end of the spring 42 fixed to the flange and the other end fixed to the fixing plate 43. A second roller 9 is provided at the bottom of the support rod 41. This elastic support assembly 4 effectively absorbs and compensates for the deformation of the pipeline itself, ensuring the stability of the distance between the detection assembly 2 and the outer wall of the pipeline. Furthermore, the buffering effect of the spring 42 significantly reduces the impact and wear caused by hard contact, protecting the pipeline surface while also extending the service life of the device itself.

[0041] Specifically, in this embodiment, a mounting groove is formed at the bottom center of the housing 1, and the detection component 2 is installed inside the mounting groove. The detection component 2 includes a magnetic core and a coil, with the coil wound around the periphery of the magnetic core. The detection component 2 is fixed by bonding the magnetic core to the mounting groove.

[0042] Preferably, the telescopic rod component 7 includes an outer tube, an inner tube, and a locking screw, and the length of the outer tube and the inner tube is adjusted by the locking screw. The end of the telescopic rod component 7 away from the universal joint 6 is provided with a grip, which is a cylindrical structure and has anti-slip texture on its outer circumference.

[0043] The specific working steps and detection principle of the vehicle brake pressure pipeline crack detection device in this embodiment are as follows:

[0044] Before testing, the integrity and functionality of each component of the device must be checked. Confirm that the housing 1 is undamaged, the detection component 2 is reliably connected, the spring 42 of the elastic support component 4 is reliably connected, the rollers rotate smoothly, the locking mechanism 8 and the telescopic rod component 7 are functioning normally, and the power module and signal processing circuit are fault-free. At the same time, measure the actual diameter of the pressure pipe 5 to be tested, and initially adjust the relative angle of the clamping arm component 32 and the clamping plate 31 to match the pipe diameter. Then, attach the detection device to the target detection area of ​​the pipe, so that the second roller 9 of the elastic support component 4 contacts the outer wall of the pipe, and ensure that the mounting groove of the detection component 2 is facing the detection surface. Then, manually or with auxiliary tools, adjust the angle of the clamping arm 321 so that its arc-shaped concave surface completely fits the outer wall of the pipe and tighten the locking bolts to lock the relative position, ensuring that the device firmly holds the pipe, and at the same time confirm that the second roller 9 is in tight contact without jamming. Next, based on the on-site spatial environment, the length is adjusted by using the locking screws of the outer and inner tubes of the telescopic rod component 7. The force angle of the operating rod is adjusted using the universal joint 6 to position the gripping part in a convenient position for applying force. Then, the circumferential position of the device is finely adjusted. The adaptive characteristics of the elastic support component 4 ensure that the detection surface of the detection component 2 is completely perpendicular to the radial direction of the pipe. After that, the power module and signal processing circuit are turned on, and the eddy current detection probe is started. After the equipment completes its self-test and enters a stable working state, the device is moved at a constant speed along the axial or circumferential direction of the pipe by hand using the gripping part with anti-slip texture. The rollers reduce friction, and the elastic support component 4 buffers vibration and compensates for slight deformation of the pipe in real time to maintain the detection distance and perpendicularity of the detection surface. During the detection process, the eddy current probe emits an alternating magnetic field to the pipe surface and senses eddy currents. The signal processing circuit collects the eddy current field change data in real time and transmits it to the terminal or storage module. After completing the target area detection, first shut down the detection component 2 and the signal processing circuit, cut off the power, then loosen the locking bolt, rotate the clamping arm 321 to detach the device from the pipe and remove it, and finally export the collected data. Through analysis, the location, length and depth of the crack are identified based on the abnormal fluctuation of the eddy current field, and a detection report is generated to complete the entire detection process.

[0045] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicator will also change accordingly.

[0046] Furthermore, in this embodiment, the use of terms such as "first" and "second" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this embodiment, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this embodiment, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this embodiment according to the specific circumstances.

[0048] It should be understood that the above description of specific embodiments of the present invention is only for illustrating the technical approach and features of the present invention, and is intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. However, the present invention is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of the present invention should be covered within the protection scope of the present invention.

Claims

1. A device for detecting cracks in vehicle brake pressure pipes, characterized in that, The detection device includes a housing (1), a detection component (2), a clamping and positioning component (3), and an elastic support component (4). The bottom of the housing (1) is provided on the outer wall of the pressure pipe (5) through the elastic support assembly (4), and the top is connected to a telescopic rod component (7) with adjustable length through a universal joint (6). The detection component (2) is disposed inside the housing (1) near the bottom surface, and the detection surface of the detection component (2) is perpendicular to the radial direction of the pressure pipe (5); The clamping and positioning assembly (3) includes clamping pieces (31) extending from both ends of the housing (1). The ends of the clamping pieces (31) are rotatably or fixedly connected to clamping arm assemblies (32). The detection device is installed around the pressure pipe (5) by adjusting the angle between the pair of clamping arm assemblies (32).

2. The vehicle brake pressure pipe crack detection device as described in claim 1, characterized in that, The pair of clips (31) are fixedly connected to opposite sides of the housing (1), with one end fixedly connected to the housing (1) and the other end connected to the clamping arm assembly (32) via a locking mechanism (8). The locking mechanism (8) can lock the relative position of the clamping arm assembly (32) and the clips (31).

3. The vehicle brake pressure pipeline crack detection device as described in claim 2, characterized in that, The clamping arm assembly (32) includes a clamping arm (321) and a first roller (322); The locking mechanism (8) includes a first connecting hole on the clamping arm (321), a second connecting hole on the clamping plate (31) corresponding to the first connecting hole, and a locking bolt; the first connecting hole and the second connecting hole are connected by the locking bolt, and the clamping arm (321) can be rotatably or fixedly connected to the clamping plate (31) by adjusting the tightness of the locking bolt.

4. The vehicle brake pressure pipe crack detection device as described in claim 3, characterized in that, The elastic support assembly (4) includes a support rod (41), a spring (42), and a fixing plate (43). The bottom of the housing (1) has a groove (11), and the fixing plate (43) is fixed to the groove (11) and has a through hole in the middle that is concentric with the groove (11); The support rod (41) slides through the through hole and has an outward flange at the top. A spring (42) is provided between the flange and the fixing plate (43). One end of the spring (42) is fixed to the flange and the other end is fixed to the fixing plate (43). The bottom of the support rod (41) is provided with a second roller (9).

5. The vehicle brake pressure pipeline crack detection device as described in claim 3, characterized in that, The bottom center of the housing (1) has an installation groove, and the detection component (2) is installed inside the installation groove.

6. The vehicle brake pressure pipeline crack detection device as described in claim 5, characterized in that, The detection component (2) includes a magnetic core and a coil, the coil being wound around the periphery of the magnetic core, and the detection component (2) being fixed by attaching the magnetic core to the mounting groove.

7. The vehicle brake pressure pipe crack detection device as described in claim 1, characterized in that, The telescopic rod component (7) includes an outer tube, an inner tube, and a locking screw, and the length of the outer tube and the inner tube is adjusted by the locking screw.

8. The vehicle brake pressure pipe crack detection device according to any one of claims 1 to 7, characterized in that, The telescopic rod component (7) has a gripping part at one end away from the universal joint (6). The gripping part is cylindrical and has anti-slip texture on its outer circumference.

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