A magnetic flux leakage detection device for steel wire rope

Abstract

This utility model discloses a magnetic flux leakage detection device for steel wire ropes, belonging to the field of steel wire rope detection technology. It includes a detection component and a pretreatment component. The detection component comprises an upper detection device and a lower detection device hinged together. Both the upper and lower detection devices have semi-cylindrical cavities on their facing surfaces for the steel wire rope to pass through. The pretreatment component includes two arc-shaped mounting plates respectively fixedly connected to the same side of the upper and lower detection devices. This magnetic flux leakage detection device uses magnets to attract magnetic debris from the surface of the steel wire rope. A sliding sleeve, slidably mounted on the mounting plate, separates the magnetic debris from the magnet. A flange prevents the magnetic debris from separating from the sliding sleeve when it is pulled out, thus achieving pretreatment of the steel wire rope. Compared with existing devices, this avoids the problems of magnetic debris affecting the magnetic flux leakage detection effect and the cumbersome cleaning process, improving both the detection effect and cleaning efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of wire rope testing technology, and in particular relates to a wire rope magnetic leakage detection device. Background Technology

[0002] During operation, steel wire ropes experience fatigue due to pure mechanical forces such as bending, tension, and torsion. Fatigue can lead to numerous broken wires and strands, and even instantaneous rope breakage, posing significant safety hazards. Therefore, magnetic flux leakage detection devices are needed to detect defects in steel wire ropes. The principle behind this detection is that after a steel wire rope is magnetized, defects on or near its surface create a magnetic leakage field. Changes in this magnetic leakage field can then be detected to identify the defects.

[0003] Existing wire rope magnetic leakage detection devices have a magnetic field inside them. As the wire rope passes through the device, some magnetic debris is transferred to the inner wall of the device. This magnetic debris affects the magnetic leakage detection effect and is also quite troublesome to clean.

[0004] To address this issue, we propose a magnetic flux leakage detection device for steel wire ropes. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art that magnetic debris affects the magnetic flux leakage detection effect and is also troublesome to clean, and to propose a magnetic flux leakage detection device for steel wire rope.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A magnetic flux leakage detection device for steel wire rope includes a detection component and a pretreatment component. The detection component includes an upper detection device and a lower detection device hinged to each other. The facing surfaces of the upper and lower detection devices each have a semi-cylindrical cavity through which the steel wire rope passes. The pretreatment component includes two arc-shaped mounting plates respectively fixedly connected to the same side of the upper and lower detection devices, and the mounting plates are coaxial with the cavities. Magnets are embedded in the mounting plates. The device also includes a sliding sleeve slidably fitted on the mounting plates. The sliding sleeve has a flange extending inward from the inner side of its end facing the detection component. A locking hole is provided on the outer side of the sliding sleeve. The sides of the upper and lower detection devices each have a locking component with a matching locking hole to lock or unlock the sliding sleeve.

[0008] Preferably, the number of magnets on one of the mounting plates is not less than four, and the central angles formed by the projections of adjacent magnets onto the cavity end face are equal.

[0009] Preferably, the magnets on the mounting plate are arranged in an alternating pattern.

[0010] Preferably, a cleaning brush that matches a steel wire rope is fixedly connected to the inner side of the sliding sleeve away from the flange.

[0011] Preferably, the locking assembly includes two fixing plates that are respectively fixedly connected to the sides of the upper detection device and the lower detection device. A locking rod is slidably provided through the fixing plate, and the bottom end of the locking rod is engaged with a locking hole. The fixing plate is provided with an elastic component that drives the locking rod to move toward the locking hole.

[0012] Preferably, the bottom end of the locking rod is angled on the side facing away from the detection component.

[0013] Preferably, the flange is provided with ball bearings that rotate toward the side facing the wire rope.

[0014] In summary, the technical effects and advantages of this utility model are as follows: This wire rope magnetic flux leakage detection device uses a magnet to attract magnetic debris from the surface of the wire rope, and a sliding sleeve mounted on the mounting plate separates the magnetic debris from the magnet. A flange prevents the magnetic debris from separating from the sliding sleeve when it is pulled out, thus achieving pretreatment of the wire rope. Compared with existing devices, this avoids the problem of magnetic debris affecting the magnetic flux leakage detection effect and the difficulty of cleaning, thereby improving the detection effect and cleaning efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional front view of the present invention;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a cross-sectional side view of the present invention;

[0019] Figure 5 This is a side view of the upper and lower detection devices in this utility model when they are separated.

[0020] In the diagram: 1. Detection component; 2. Pre-treatment component; 3. Upper detection device; 4. Lower detection device; 5. Cavity; 6. Mounting plate; 7. Magnet; 8. Sliding sleeve; 9. Flange; 10. Locking hole; 11. Cleaning brush; 12. Fixing plate; 13. Locking rod; 14. Elastic component; 15. Ball bearing. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-3 A magnetic flux leakage detection device for steel wire rope includes a detection component 1 and a pretreatment component 2. The detection component 1 includes an upper detection device 3 and a lower detection device 4 hinged to each other. The facing surfaces of the upper detection device 3 and the lower detection device 4 each have a semi-cylindrical cavity 5 for the steel wire rope to pass through. The pretreatment component 2 includes two arc-shaped mounting plates 6 respectively fixedly connected to the same side of the upper detection device 3 and the lower detection device 4, and the mounting plates 6 are coaxial with the cavities 5. Magnets 7 are embedded within the mounting plates 6. The upper detection device 3 and the lower detection device 4 in the detection component 1 are existing technologies, including an excitation component and a magnetic sensor. Damage detection of the steel wire rope is achieved by monitoring the magnetic flux leakage of the steel wire rope through the magnetic sensor. This is common in the field of magnetic flux leakage detection and will not be elaborated further. It also includes a sliding sleeve 8 on the mounting plate 6. The sliding sleeve 8 has a flange 9 extending inward from the inner side of the end facing the detection component 1. A locking hole 10 is provided on the outer side of the sliding sleeve 8. Both the upper detection device and the lower detection device 4 are provided with locking components that cooperate with the locking hole 10 to lock or unlock the sliding sleeve 8.

[0023] Reference Figure 1-3 The magnetic flux leakage detection device for this wire rope is designed so that the upper detection device 3 and the lower detection device 4 are fitted onto and locked onto the wire rope to begin the magnetic flux leakage detection. The wire rope first passes through the mounting plate 6, where the magnet 7 attracts magnetic debris from the wire rope. After this, the wire rope enters between the upper detection device 3 and the lower detection device 4 for magnetic flux leakage detection. After the detection is complete, the upper detection device 3 and the lower detection device 4 are separated, allowing the magnetic flux leakage detection device to be removed from the wire rope. When the cavities 5 of both the upper detection device 3 and the lower detection device 4 are facing upwards, if... Figure 5 By unlocking the sliding sleeve 8 using the locking component, the sliding sleeve 8 can be pulled out. During the pulling out process, the flange 9 limits the magnetic debris inside the sliding sleeve 8, preventing the magnetic debris from being affected by the magnet 7 and not moving with the sliding sleeve 8. After the sliding sleeve 8 is pulled out, since there is no attraction between the sliding sleeve 8 and the magnetic debris, the magnetic debris can be poured out directly, completing the cleaning.

[0024] Reference Figure 3-4 There are no fewer than four magnets 7 on a mounting plate 6, and the central angles formed by the projections of adjacent magnets 7 onto the end face of the cavity 5 are equal. This ensures that magnetic debris on the side of the wire rope at all angles can be attracted by the magnets 7, thus improving the cleaning effect.

[0025] The magnets 7 on the mounting plate 6 are arranged in an alternating pattern. This alternating arrangement of the magnets 7 can prevent excessive accumulation of magnetic debris, which would affect the adsorption effect and further improve the cleaning effect.

[0026] Reference Figure 1 The inner side of the sliding sleeve 8 away from the flange 9 is fixedly connected to a cleaning brush 11 that matches the steel wire rope. The cleaning brush 11 can clean the debris on the surface of the steel wire rope as much as possible before the magnet 7 is activated, so as to avoid the magnet 7 adsorbing too much debris and affecting the adsorption effect, thus further improving the cleaning effect.

[0027] Reference Figure 1-3 The locking assembly includes two fixing plates 12 that are respectively fixedly connected to the sides of the upper detection device 3 and the lower detection device 4. A locking rod 13 is slidably provided through the fixing plate 12, and the bottom end of the locking rod 13 is engaged with the locking hole 10. The fixing plate 12 is provided with an elastic component 14 that drives the locking rod 13 to move toward the locking hole 10.

[0028] The bottom end of the locking rod 13 is beveled on the side facing away from the detection component 1. This bevel allows the sliding sleeve 8 to be easily installed by simply placing it on the mounting plate 6 until it aligns with the beveled surface of the locking rod 13. The sliding sleeve 8 then slides further towards the mounting plate 6, causing the locking rod 13 to move upwards under the upward force until its bottom surface aligns with the outer surface of the sliding sleeve 8. The sliding sleeve 8 continues to slide until the locking rod 13 is directly above the locking hole 10. At this point, a spring drives the locking rod 13 downwards and inserts it into the locking hole 10, thus completing the installation of the sliding sleeve 8 and improving operational convenience.

[0029] The flange 9 is equipped with a ball bearing 15 that rotates towards the side facing the wire rope. The design of the ball bearing 15 can prevent the wire rope from directly contacting the flange 9 when it vibrates, thus avoiding damage to the flange 9 or the wire rope and improving stability and service life.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A magnetic flux leakage detection device for steel wire rope, comprising a detection component (1) and a pretreatment component (2), characterized in that, The detection assembly (1) includes an upper detection device (3) and a lower detection device (4) hinged to each other. The faces of the upper detection device (3) and the lower detection device (4) are provided with semi-cylindrical cavities (5) for steel wire ropes to pass through. The pretreatment assembly (2) includes two arc-shaped mounting plates (6) fixedly connected to the same side of the upper detection device (3) and the lower detection device (4), and the mounting plates (6) are coaxial with the cavities (5). A magnet (7) is embedded in the mounting plates (6). The assembly also includes a sliding sleeve (8) on the mounting plate (6). The sliding sleeve (8) has a flange (9) extending inward from the inner side of one end facing the detection assembly (1). A locking hole (10) is provided on the outer side of the sliding sleeve (8). The sides of the upper detection device and the lower detection device (4) are provided with locking assemblies that cooperate with the locking holes (10) to lock or unlock the sliding sleeve (8).

2. The wire rope magnetic flux leakage detection device according to claim 1, characterized in that, The number of magnets (7) on a mounting plate (6) is not less than 4, and the central angles formed by the projections of adjacent magnets (7) onto the end face of the cavity (5) are equal.

3. The wire rope magnetic flux leakage detection device according to claim 2, characterized in that, The magnets (7) on the mounting plate (6) are arranged in an alternating pattern.

4. The wire rope magnetic flux leakage detection device according to claim 1, characterized in that, The inner side of the sliding sleeve (8) away from the flange (9) is fixedly connected to a cleaning brush (11) that matches the wire rope.

5. The wire rope magnetic flux leakage detection device according to claim 1, characterized in that, The locking assembly includes two fixing plates (12) that are fixedly connected to the sides of the upper detection device (3) and the lower detection device (4) respectively. A locking rod (13) is slidably provided through the fixing plate (12), and the bottom end of the locking rod (13) is engaged with the locking hole (10). The fixing plate (12) is provided with an elastic component (14) that drives the locking rod (13) to move toward the locking hole (10).

6. The wire rope magnetic flux leakage detection device according to claim 5, characterized in that, The bottom end of the locking rod (13) is angled on the side facing away from the detection component (1).

7. The magnetic flux leakage detection device for steel wire rope according to claim 1, characterized in that, The flange (9) is provided with ball bearings (15) that rotate toward the side of the wire rope.

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