Steel wire rope detection device based on TMR sensor

Abstract

The utility model relates to the technical field of steel wire rope defect detection, and discloses a steel wire rope detection device based on a TMR sensor, which comprises a main sleeve, an auxiliary sleeve is hinged to the outer wall of one side of the main sleeve, handles are fixedly mounted on the top of the main sleeve and the top of the auxiliary sleeve respectively, and the main sleeve and the auxiliary sleeve are hinged to the outer wall of one side of the main sleeve. A magnetic attraction piece is fixedly installed on the side face of the handle, a positioning module is arranged in the main sleeve and comprises an outer fixing ring, and the outer fixing ring is fixedly installed on the arc-shaped inner wall of the main sleeve. According to the steel wire rope detection device based on the TMR sensors, the circumferentially-installed TMR sensors are arranged in an array mode in the detection module, the distance measuring module is additionally arranged to monitor the position parameters of the steel wire rope in real time, then the position of the steel wire rope is adjusted in real time through the limiting module, and the deviation influence of steel wire rope shaking on magnetic flux leakage detection is effectively avoided; the detection accuracy and stability are improved, and the use effect is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of wire rope defect detection technology, specifically a wire rope detection device based on a TMR sensor. Background Technology

[0002] Traditional wire rope inspection methods mainly rely on periodic visual inspections and manual instrument measurements. However, with technological innovation, various wire rope defect detection methods have emerged, such as ultrasonic testing, magnetic particle testing, vibration testing, visual sensor testing, and magnetic sensor testing.

[0003] In existing technologies, ultrasonic testing methods have requirements on defect orientation, making it difficult to detect defects parallel to the sound beam. Furthermore, they have certain requirements on material grain size, making detection challenging for materials with high attenuation. Magnetic particle testing is highly susceptible to external interference, such as environmental magnetic fields and electromagnetic interference, leading to inaccurate results and requiring high surface quality. Traditional magnetic sensor testing suffers from poor sensor interchangeability, signal variations with temperature, and nonlinear output measurements affected by distance, resulting in low accuracy. Moreover, during the detection of wire rope damage, the wire rope vibrates, causing changes in the lift-off distance between the sensor and the wire rope. Since the leakage magnetic signal is significantly affected by these changes, it may fail to accurately reflect the degree of damage. Therefore, we propose a wire rope detection device based on a TMR sensor. Utility Model Content

[0004] The purpose of this invention is to provide a wire rope detection device based on a TMR sensor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wire rope detection device based on a TMR sensor, comprising a main sleeve, a secondary sleeve hinged to one side of the outer wall of the main sleeve, handles fixedly installed on the top of both the main sleeve and the secondary sleeve, magnetic suction plates fixedly installed on the sides of the handles, a positioning module provided inside the main sleeve, the positioning module including an outer fixing ring fixedly installed on the arc-shaped inner wall of the main sleeve, an inner fixing ring fixedly installed on the arc-shaped inner surface of the main sleeve, one end of a hydraulic telescopic rod fixedly connected to the arc-shaped inner surface of the outer fixing ring, the other end of the hydraulic telescopic rod movably connected to a positioning wheel via a fixedly connected U-shaped frame, a fixing rod fixedly connected to the arc-shaped inner wall of the inner fixing ring, and an auxiliary wheel provided at the end of the fixing rod. An excitation module is fixedly installed on the arc-shaped inner wall of the main sleeve. A detection module is also provided on the arc-shaped inner wall of the main sleeve. The detection module includes a mounting ring, which is fixedly installed on the arc-shaped inner wall of the main sleeve. A TMR sensor is fixedly installed on the arc-shaped inner surface of the mounting ring. A ranging module is also provided on the arc-shaped inner wall of the main sleeve. The ranging module includes a mounting bracket, which is fixedly installed on the arc-shaped inner wall of the main sleeve. A ranging sensor is fixedly installed on the arc-shaped inner wall of the mounting bracket. A limit module is provided on the arc-shaped inner wall of the main sleeve. The limit module includes an adjusting bolt, which is threaded onto the arc-shaped inner wall of the main sleeve. A nylon pressure block is movably connected to the end of the adjusting bolt near the center of the main sleeve. An alarm is fixedly installed on the inner wall of the end of the main sleeve.

[0006] Preferably, the number of positioning modules is set to two sets, and the two sets of positioning modules are symmetrically arranged at the left and right ends of the main sleeve with the vertical central axis of the main sleeve as the axis of symmetry. The arc-shaped inner surface of the auxiliary sleeve is provided with an arc-shaped mounting groove that matches the outer and inner fixing rings to facilitate the installation of the positioning modules. The left and right ends of the main sleeve and the auxiliary sleeve are provided with two sets of positioning modules to ensure that the wire rope being tested remains straight inside the testing equipment, thereby ensuring the accuracy of the testing data of the wire rope by the device.

[0007] Preferably, the number of TMR sensors is set to eight, and the eight TMR sensors are evenly distributed in a circular array on the arc-shaped inner surface of the mounting ring. The included angle between two adjacent TMR sensors is 45°, which is used to detect the leakage magnetic field variation in eight directions around the wire rope.

[0008] Preferably, the ranging module and the detection module are arranged in parallel, that is, the two are concentric with respect to the wire rope, thereby improving the detection accuracy of the lifting distance.

[0009] Preferably, the main sleeve is provided with a linkage assembly, which includes a drive wheel and an auxiliary wheel that are coaxially and fixedly connected. The drive wheel is connected to a driven wheel via a transmission belt. The driven wheel is rotatably mounted on the outer wall of the fixed rod. A linkage rod is hinged to the outer wall of the driven wheel. A push rod is slidably mounted on the inner wall of the main sleeve. A convex ball is fixedly mounted on the outer wall of the push rod near the center of the main sleeve. An arc-shaped groove is formed on the arc-shaped outer wall of the mounting ring, and the convex ball is disposed inside the arc-shaped groove.

[0010] Preferably, the hinge point between the linkage rod and the driven wheel is located on the outer surface of the driven wheel on the side away from the center, and the other end of the linkage rod is hinged to the outer wall of the push rod. Thus, the rotation of the driven wheel, in conjunction with the linkage rod, enables the push rod to be reciprocated, causing it to reciprocate radially along the inner wall of the main sleeve.

[0011] Compared with the prior art, this utility model provides a wire rope detection device based on a TMR sensor, which has the following advantages:

[0012] 1. This wire rope detection device based on TMR sensors uses an array of circumferentially mounted TMR sensors in its detection module, and adds a ranging module to monitor the position parameters of the wire rope in real time. Then, the position of the wire rope is adjusted in real time through a limit module, which effectively avoids the influence of wire rope vibration on the deviation of magnetic leakage detection, improves detection accuracy and stability, and enhances the effect of use.

[0013] 2. This wire rope detection device based on TMR sensors is equipped with a linkage component. The movement of the wire rope drives the rotation of the auxiliary wheel, which in turn drives the rotation of the drive wheel. In conjunction with the transmission belt and driven wheel, the linkage rod drives the push rod, causing the push rod to perform radial reciprocating motion along the inner wall of the main sleeve. With the convex ball guiding and restricting the arc-shaped inclined groove, the mounting ring drives multiple sets of TMR sensors mounted on its arc-shaped inner surface to perform small-amplitude circumferential reciprocating motion, thereby improving the detection range of the TMR sensors and ensuring the device's efficiency in detecting defects in the wire rope. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0015] Figure 2 This is a schematic diagram showing the unfolded state of the main sleeve and the auxiliary sleeve of this utility model;

[0016] Figure 3 This is a schematic diagram of the present invention, showing the removal of the main sleeve and the auxiliary sleeve;

[0017] Figure 4 This is a schematic diagram of the positioning module of this utility model;

[0018] Figure 5 This is a schematic diagram of the detection module and the ranging module of this utility model;

[0019] Figure 6 This is a schematic diagram of the removal of the main sleeve and the auxiliary sleeve in Embodiment 2 of this utility model;

[0020] Figure 7 This is a schematic diagram of the linkage component structure in Embodiment 2 of this utility model.

[0021] In the diagram: 1. Main sleeve; 2. Secondary sleeve; 3. Handle; 4. Magnetic suction plate; 5. Positioning module; 51. Outer fixing ring; 52. Inner fixing ring; 53. Hydraulic telescopic rod; 54. Positioning wheel; 55. Fixing rod; 56. Auxiliary wheel; 6. Excitation module; 7. Detection module; 71. Mounting ring; 72. TMR sensor; 8. Distance measuring module; 81. Mounting bracket; 82. Distance measuring sensor; 9. Limit module; 91. Adjusting bolt; 92. Nylon pressure block; 10. Alarm; 11. Linkage assembly; 111. Drive wheel; 112. Transmission belt; 113. Driven wheel; 114. Linkage rod; 115. Push rod; 116. Convex ball; 117. Arc-shaped inclined groove. Detailed Implementation

[0022] Example 1

[0023] like Figures 1-5As shown, this utility model provides a technical solution: a wire rope detection device based on a TMR sensor, including a main sleeve 1, a secondary sleeve 2 hinged to one side of the outer wall of the main sleeve 1, handles 3 fixedly installed on the top of both the main sleeve 1 and the secondary sleeve 2, magnetic suction plates 4 fixedly installed on the side of the handles 3, a positioning module 5 provided inside the main sleeve 1, the positioning module 5 including an outer fixing ring 51, the outer fixing ring 51 fixedly installed on the arc-shaped inner wall of the main sleeve 1, an inner fixing ring 52 fixedly installed on the arc-shaped inner surface of the main sleeve 1, one end of a hydraulic telescopic rod 53 fixedly connected to the arc-shaped inner surface of the outer fixing ring 51, the other end of the hydraulic telescopic rod 53 movably connected to a positioning wheel 54 through a fixedly connected U-shaped frame, a fixing rod 55 fixedly connected to the arc-shaped inner wall of the inner fixing ring 52, an auxiliary wheel 56 provided at the end of the fixing rod 55, the arc-shaped inner wall of the main sleeve 1... An excitation module 6 is fixedly installed on the inner wall of the main sleeve 1. A detection module 7 is provided on the arc-shaped inner wall of the main sleeve 1. The detection module 7 includes a mounting ring 71, which is fixedly installed on the arc-shaped inner wall of the main sleeve 1. A TMR sensor 72 is fixedly installed on the arc-shaped inner surface of the mounting ring 71. A ranging module 8 is provided on the arc-shaped inner wall of the main sleeve 1. The ranging module 8 includes a mounting bracket 81, which is fixedly installed on the arc-shaped inner wall of the main sleeve 1. A ranging sensor 82 is fixedly installed on the arc-shaped inner wall of the mounting bracket 81. A limit module 9 is provided on the arc-shaped inner wall of the main sleeve 1. The limit module 9 includes an adjusting bolt 91, which is threadedly connected to the arc-shaped inner wall of the main sleeve 1. A nylon pressure block 92 is movably connected to the end of the adjusting bolt 91 near the center of the main sleeve 1. An alarm 10 is fixedly installed on the inner wall of the end of the main sleeve 1.

[0024] In one embodiment of this utility model, the magnetic attraction plates 4 on the top handles 3 of the main sleeve 1 and the auxiliary sleeve 2 have opposite magnetic properties, so that the main sleeve 1 and the auxiliary sleeve 2 can be completely pressed together after being combined, so that the combined body of the main sleeve 1 and the auxiliary sleeve 2 can form a cylindrical structure for detecting the wire rope. Furthermore, two sets of positioning modules 5 are provided, and the two sets of positioning modules 5 are symmetrically arranged at the left and right ends of the main sleeve 1 with the vertical central axis of the main sleeve 1 as the axis of symmetry. The arc-shaped inner surface of the auxiliary sleeve 2 is provided with an arc-shaped mounting groove that matches the outer fixing ring 51 and the inner fixing ring 52 to facilitate the installation of the positioning modules 5. The main sleeve 1 and the auxiliary sleeve 2 Two sets of positioning modules 5 are installed inside the left and right ends of the device to keep the wire rope being tested straight inside the testing equipment, thus ensuring the accuracy of the testing data of the wire rope. Furthermore, there are eight sets of hydraulic telescopic rods 53 and positioning wheels 54, which are evenly distributed in a circular array on the inner surface of the outer fixed ring 51. The outer surface of the positioning wheel 54 is concave, so that the positioning wheel 54 can better contact and fit with the surface of the wire rope. This allows the wire rope to be confined to the center after passing through the gap between the main sleeve 1 and the auxiliary sleeve 2, thus ensuring the stability during the testing process.

[0025] Furthermore, two sets of excitation modules 6 are provided, and the two sets of excitation modules 6 are located on the inner surfaces of the left and right sides of the main sleeve 1. Each excitation module 6 includes two pairs of radial annular permanent magnets installed inside the main body. Each annular permanent magnet is composed of multiple fan-shaped radial permanent magnets spliced ​​together, used to locally excite the wire rope, thereby generating a magnetic field in and around the wire rope body, facilitating its detection. Specifically, eight sets of TMR sensors 72 are provided, and the eight sets of TMR sensors 72 are evenly distributed in a circular array on the arc-shaped inner surface of the mounting ring 71. Adjacent TMR sensors 72 are arranged in a circular array. The included angle between the MR sensors 72 is 45°, which is used to detect the leakage magnetic field variation in eight directions around the wire rope. Specifically, the distance measuring module 8 has three sets of distance measuring sensors 82, and the three sets of distance measuring sensors 82 are evenly distributed in a circular array on the arc-shaped inner surface of the mounting frame 81. By setting three distance measuring sensors 82, it is ensured that the lifting distance between the wire rope and the TMR sensor 72 can be collected in 360° without blind spots. In addition, the distance measuring module 8 and the detection module 7 are set in parallel, that is, the concentricity of the two relative to the wire rope is consistent, thereby improving the detection accuracy of the lifting distance.

[0026] In addition, the alarm 10 is equipped with a buzzer, a power supply and an LED. When the power supply voltage in the alarm 10 is low, the buzzer sounds, the LED flashes, and the low voltage alarm information is uploaded to the PC, so that staff can view the test data information in a timely manner.

[0027] Example 2

[0028] Please refer to the attached instruction manual for details. Figures 6-7 In this embodiment of the present invention, a linkage assembly 11 is provided inside the main sleeve 1. The linkage assembly 11 includes a drive wheel 111, which is coaxially and fixedly connected to the auxiliary wheel 56. The drive wheel 111 is connected to a driven wheel 113 via a transmission belt 112. The driven wheel 113 is rotatably mounted on the outer wall of the fixed rod 55. A linkage rod 114 is hinged to the outer wall of the driven wheel 113. A push rod 115 is slidably mounted on the inner wall of the main sleeve 1. A convex ball 116 is fixedly mounted on the outer wall of the push rod 115 near the center of the main sleeve 1. An arc-shaped inclined groove 117 is opened on the arc-shaped outer wall of the mounting ring 71, and the convex ball 116 is disposed inside the arc-shaped inclined groove 117.

[0029] In this embodiment of the invention, two sets of driving wheels 111, transmission belts 112, and driven wheels 113 are provided, and the two sets of driving wheels 111, transmission belts 112, and driven wheels 113 are symmetrically arranged about the horizontal central axis of the auxiliary wheel 56. The hinge point between the linkage rod 114 and the driven wheel 113 is located on the outer surface of the driven wheel 113 on the side away from the center. The other end of the linkage rod 114 is hinged to the outer wall of the push rod 115. Since the mounting ring 71 is rotatably mounted on the inner surface of the main sleeve 1, and the arc-shaped inner wall of the auxiliary sleeve 2 is provided with the same arc-shaped groove as the main sleeve 1, the mounting ring is installed after the main sleeve 1 and the auxiliary sleeve 2 are closed. 71 can rotate. During the wire rope detection process, when pushing, the movement of the wire rope drives the rotation of the auxiliary wheel 56, which in turn drives the rotation of the drive wheel 111. In conjunction with the transmission belt 112 and the driven wheel 113, the linkage rod 114 drives the push rod 115, causing the push rod 115 to reciprocate radially along the inner wall of the main sleeve 1. With the guidance and restriction of the arc-shaped inclined groove 117 by the convex ball 116, the mounting ring 71 drives the multiple sets of TMR sensors 72 mounted on its arc-shaped inner surface to perform small-amplitude circumferential reciprocating motion, thereby improving the detection range of the TMR sensors 72 and ensuring the efficiency of the device in detecting defects in the wire rope.

[0030] In this invention, when performing surface defect detection on a wire rope, the user first unfolds the device from the middle, so that the main sleeve 1 and the auxiliary sleeve 2 are unfolded outward at their hinged connection. The wire rope is then placed in the center, and the main sleeve 1 and the auxiliary sleeve 2 are fastened together. The magnetic suction plate 4 is used to fix the main sleeve 1 and the auxiliary sleeve 2, so that the wire rope to be tested is placed in the wire rope through hole at the middle of the combination formed by the main sleeve 1 and the auxiliary sleeve 2. The user then holds the handle 3 for stable testing. Afterward, the operator obtains the lifting distance of the wire rope according to the distance measuring module 8, and then adjusts the position of the wire rope by adjusting the adjusting bolt 91 of the limit module 9. After the wire rope is adjusted to the appropriate position, the user can hold the detection device to start detecting defects and damage to the wire rope. Finally, the collected lifting distance, wire rope damage location, and power supply voltage of the wire rope detection device are uploaded to the PC for further data processing, thereby completing the defect detection work of the wire rope.

[0031] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A wire rope detection device based on a TMR sensor, comprising a main sleeve (1), a secondary sleeve (2) hinged to one outer wall of the main sleeve (1), a handle (3) fixedly installed on the top of both the main sleeve (1) and the secondary sleeve (2), and a magnetic suction plate (4) fixedly installed on the side of the handle (3), characterized in that: The main sleeve (1) is equipped with a positioning module (5). The positioning module (5) includes an outer fixing ring (51), which is fixedly installed on the arc-shaped inner wall of the main sleeve (1). An inner fixing ring (52) is fixedly installed on the arc-shaped inner surface of the main sleeve (1). One end of a hydraulic telescopic rod (53) is fixedly connected to the arc-shaped inner surface of the outer fixing ring (51). The other end of the hydraulic telescopic rod (53) is movably connected to a positioning wheel (54) through a fixedly connected U-shaped frame. A fixing rod (55) is fixedly connected to the arc-shaped inner wall of the inner fixing ring (52). An auxiliary wheel (56) is provided at the end of the fixing rod (55). An excitation module (6) is fixedly installed on the arc-shaped inner wall of the main sleeve (1). A detection module (7) is provided on the arc-shaped inner wall of the main sleeve (1). The detection module (7) includes an installation ring (71). The mounting ring (71) is fixedly mounted on the arc-shaped inner wall of the main sleeve (1). A TMR sensor (72) is fixedly mounted on the arc-shaped inner surface of the mounting ring (71). A ranging module (8) is provided on the arc-shaped inner wall of the main sleeve (1). The ranging module (8) includes a mounting bracket (81). The mounting bracket (81) is fixedly mounted on the arc-shaped inner wall of the main sleeve (1). A ranging sensor (82) is fixedly mounted on the arc-shaped inner wall of the mounting bracket (81). A limit module (9) is provided on the arc-shaped inner wall of the main sleeve (1). The limit module (9) includes an adjusting bolt (91). The adjusting bolt (91) is threadedly connected to the arc-shaped inner wall of the main sleeve (1). A nylon pressure block (92) is movably connected to the end of the adjusting bolt (91) near the center of the main sleeve (1). An alarm (10) is fixedly mounted on the inner wall of the end of the main sleeve (1).

2. The wire rope detection device based on a TMR sensor according to claim 1, characterized in that: The number of positioning modules (5) is set to two sets, and the two sets of positioning modules (5) are symmetrically arranged at the left and right ends of the main sleeve (1) with the vertical central axis of the main sleeve (1) as the axis of symmetry. The arc-shaped inner surface of the auxiliary sleeve (2) is provided with an arc-shaped mounting groove that is compatible with the outer fixing ring (51) and the inner fixing ring (52). The left and right ends of the main sleeve (1) and the auxiliary sleeve (2) are provided with two sets of positioning modules (5).

3. The wire rope detection device based on a TMR sensor according to claim 1, characterized in that: The number of TMR sensors (72) is set to eight, and the eight TMR sensors (72) are evenly distributed in a circular array on the arc-shaped inner surface of the mounting ring (71).

4. The wire rope detection device based on a TMR sensor according to claim 1, characterized in that: The ranging module (8) and the detection module (7) are arranged in parallel.

5. The wire rope detection device based on a TMR sensor according to claim 1, characterized in that: The main sleeve (1) is provided with a linkage assembly (11), which includes a drive wheel (111). The drive wheel (111) is coaxially fixedly connected to the auxiliary wheel (56). The drive wheel (111) is connected to the driven wheel (113) via a transmission belt (112). The driven wheel (113) is rotatably mounted on the outer wall of the fixed rod (55). A linkage rod (114) is hinged on the outer wall of the driven wheel (113). A push rod (115) is slidably mounted on the inner wall of the main sleeve (1). A convex ball (116) is fixedly mounted on the outer wall of the push rod (115) near the center of the main sleeve (1). An arc-shaped groove (117) is opened on the arc-shaped outer wall of the mounting ring (71). The convex ball (116) is located inside the arc-shaped groove (117).

6. The wire rope detection device based on a TMR sensor according to claim 5, characterized in that: The hinge point between the linkage rod (114) and the driven wheel (113) is located on the outer surface of the driven wheel (113) on the side away from the center, and the other end of the linkage rod (114) is hinged to the outer wall of the push rod (115).

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