Magnetic flux leakage detection device for steel wire rope

Abstract

The utility model belongs to the technical field of engineering equipment flaw detection, and particularly relates to a magnetic flux leakage detection device for a steel wire rope, which comprises a detection box, the telescopic assembly comprises a box body, a sliding plate is fixedly installed on one side of the box body, a sliding groove is formed in the other side of the box body, and a shielding plate is fixedly installed on the outer surface of the box body. According to the magnetic flux leakage detection device for the steel wire rope, the four box bodies are fixed on the steel wire rope, the sliding plates of the four box bodies are inserted into the corresponding sliding grooves, and then the extrusion assembly is fixed on the two box bodies, so that the four box bodies are combined into a whole, and after the four box bodies are assembled, the extension frame is driven to move outwards through the guide wheels, so that the steel wire rope is fixed on the steel wire rope. The extension frame drives the box bodies to move outwards, so that the four box bodies move outwards together, a certain gap is kept between the box bodies and the steel wire rope, and meanwhile, the steel wire rope is kept at the central position of the detection box all the time through cooperative use of the compression spring, the telescopic rod, the connecting frame and the box bodies.

Description

Technical Field

[0001] This utility model relates to the field of flaw detection technology for engineering equipment, and in particular to a magnetic flux leakage detection device for steel wire ropes. Background Technology

[0002] Tower cranes are commonly used lifting equipment in engineering construction, and wire ropes are a crucial component of tower cranes for lifting materials. During operation, 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, electromechanical personnel need to periodically climb the tower crane to inspect the wire ropes, which requires the use of a magnetic flux leakage detection device. The principle of this detection is as follows: after a steel magnetic material is magnetized, defects on or near the surface of the specimen create a magnetic flux leakage field. By detecting changes in this magnetic flux leakage field, defects can be identified.

[0003] Publication No. CN219625427U: A magnetic flux leakage detection device for wire ropes, comprising a detection mechanism for detecting magnetic flux leakage in the wire ropes. The magnetic flux leakage detection device is installed on the boom of a tower crane via an installation mechanism to monitor the damage to the wire ropes in real time and provide replacement warnings to reduce safety hazards. However, this method presents the following problems in practical operation:

[0004] 1. This testing device is difficult to guarantee the stability between the wire rope and the outer shell during use, and it can only test wire ropes with smaller diameters. However, it is not suitable for wire ropes with larger diameters.

[0005] 2. When testing steel wire ropes with larger diameters, the lubricating oil on the steel wire rope will rub onto the inner surface of the testing equipment, causing the inside of the testing equipment to be covered with grease. Utility Model Content

[0006] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0007] Specifically, the technical problem to be solved by this utility model is to provide a magnetic flux leakage detection device for steel wire ropes, so as to solve the technical problems that current detection equipment cannot perform real-time detection of steel wire ropes of different thicknesses, and that when the detection equipment is used outdoors, it is easy to cause water leakage, which affects the detection accuracy of steel wire ropes, and even affects the service life of the magnetic flux leakage detection device and the magnetic flux leakage sensor.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0009] A magnetic flux leakage detection device for steel wire rope includes a detection box, the detection box including a telescopic component;

[0010] The telescopic assembly includes a housing, a sliding plate is fixedly installed on one side of the housing, a sliding groove is opened on the other side of the housing, and a baffle is fixedly installed on the outer surface of the housing.

[0011] As an improved technical solution, the testing box further includes a compression assembly, which includes a connecting frame, a telescopic rod fixedly installed on the inner surface of the connecting frame, and a compression spring sleeved on the outer surface of the telescopic rod.

[0012] As an improved technical solution, one side of the connecting frame is fixedly connected to the outer surface of the housing, and both ends of the compression spring are fixedly connected to the inner wall of the connecting frame.

[0013] As an improved technical solution, the testing box further includes a guiding component, which includes an extension frame. The inner surface of the extension frame is fixedly connected to the outer surface of the box body, and a guide wheel is rotatably mounted on the inner surface of the extension frame.

[0014] As an improved technical solution, a jet-type detection mechanism is fixedly installed on the inner surface of the box. The jet-type detection mechanism includes a detection frame, a magnetic flux leakage detector is fixedly installed on the inner surface of the detection frame, and a gas guide groove is opened through the inner surface of the detection frame.

[0015] As an improved technical solution, the jet-type detection mechanism also includes an air box, the top of which is fixedly connected to the outer surface of the baffle plate, a motor is fixedly mounted on the inner surface of the air box by a fixing bracket, a rotating shaft is fixedly mounted on the output end of the motor by a coupling, and a fan blade is fixedly mounted on the outer surface of the rotating shaft.

[0016] As an improved technical solution, the jet-type detection mechanism also includes air slots, which are all opened in the baffle plate and the box, and the inner surface of the air slots is provided with air connecting pipes.

[0017] After adopting the above technical solution, the beneficial effects of this utility model are:

[0018] 1. This utility model, through the design of adding an outward expansion of the detection box, and through the cooperation of the box body and sliding plate with the slide groove and baffle, the cooperation of the box body and connecting frame with the telescopic rod and compression spring, and the cooperation of the box body and extension frame with the guide wheel, enables the detection equipment to automatically expand according to the thickness of the wire rope, so that the detection device can be fixed with wire ropes of different thicknesses. At the same time, it ensures that a certain space is maintained between the wire rope and the detection equipment, preventing grease on the wire rope from scraping into the detection device and causing the inside of the detection equipment to be filled with grease after a period of use.

[0019] 2. This utility model incorporates a waterproof design for the magnetic flux leakage detection device. Through the combined use of the baffle plate and the housing, the gaps between the housings are blocked when the housing moves outward. The motor and rotating shaft work in conjunction with the fan blades and air ducts, and the air ducts and connecting pipes work in conjunction with the gas guide trough and the detection frame. This achieves the effect of using gas to block rainwater from entering the detection equipment, thus preventing rainwater from entering the detection equipment and affecting the service life of the magnetic flux leakage detection device and the magnetic flux leakage sensor. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the wire rope leakage magnetic field detection device of this utility model.

[0022] Figure 2 This is a three-dimensional structural diagram of the detection box of the wire rope leakage magnetic flux detection device of this utility model.

[0023] Figure 3 This is a partial cross-sectional view of the detection box of the wire rope leakage magnetic flux detection device of this utility model.

[0024] Figure 4 This is a three-dimensional structural diagram of the air chamber of the wire rope leakage magnetic field detection device of this utility model.

[0025] Figure 5 This is a cross-sectional view of the detection frame of the wire rope magnetic flux leakage detection device of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Detection box; 11. Telescopic assembly; 111. Box body; 112. Slide plate; 113. Slide groove; 114. Baffle plate; 12. Extrusion assembly; 121. Connecting frame; 122. Telescopic rod; 123. Compression spring; 13. Guide assembly; 131. Extension frame; 132. Guide wheel; 2. Jet-type detection mechanism; 21. Detection frame; 22. Magnetic leakage detector; 23. Gas guide groove; 24. Gas box; 25. Motor; 26. Rotating shaft; 27. Fan blade; 28. Gas trough; 29. ​​Connecting pipe. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0031] Furthermore, in this utility model, descriptions involving "first," "second," etc., are 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown in the figure, this embodiment provides a magnetic flux leakage detection device for steel wire rope. The magnetic flux leakage detection device for steel wire rope includes a detection box 1, and the detection box 1 includes a telescopic component 11.

[0033] The telescopic assembly 11 includes a housing 111, a sliding plate 112 is fixedly installed on one side of the housing 111, a sliding groove 113 is opened on the other side of the housing 111, and a baffle plate 114 is fixedly installed on the outer surface of the housing 111.

[0034] When the housing 111 moves outward, the baffle 114 can cover the gap when the two housings 111 extend, preventing rainwater from entering the testing box 1.

[0035] like Figure 1 and Figure 2As shown, the testing box 1 also includes a compression assembly 12, which includes a connecting frame 121. A telescopic rod 122 is fixedly installed on the inner surface of the connecting frame 121, and a compression spring 123 is sleeved on the outer surface of the telescopic rod 122.

[0036] like Figure 1 and Figure 2 As shown, one side of the connecting frame 121 is fixedly connected to the outer surface of the housing 111, and both ends of the compression spring 123 are fixedly connected to the inner wall of the connecting frame 121.

[0037] like Figure 1 As shown, the testing box 1 also includes a guide assembly 13, which includes an extension frame 131. The inner surface of the extension frame 131 is fixedly connected to the outer surface of the box body 111, and a guide wheel 132 is rotatably mounted on the inner surface of the extension frame 131.

[0038] like Figure 1 and Figure 4 As shown, a jet-type detection mechanism 2 is fixedly installed on the inner surface of the housing 111. The jet-type detection mechanism 2 includes a detection frame 21. A magnetic flux leakage detector 22 is fixedly installed on the inner surface of the detection frame 21. A gas guide groove 23 is opened through the inner surface of the detection frame 21.

[0039] like Figure 1 and Figure 4 As shown, the jet-type detection mechanism 2 also includes an air box 24. The top of the air box 24 is fixedly connected to the outer surface of the baffle plate 114. A motor 25 is fixedly installed on the inner surface of the air box 24 by a fixing bracket. A rotating shaft 26 is fixedly installed on the output end of the motor 25 by a coupling. A fan blade 27 is fixedly installed on the outer surface of the rotating shaft 26.

[0040] Motor 25 is electrically connected to an external power source and is controlled by an external PLC programming program.

[0041] like Figure 1 and Figure 3 As shown, the jet-type detection mechanism 2 also includes an air trough 28, which is provided on both the baffle plate 114 and the housing 111. The inner surface of the air trough 28 is provided with an air connecting pipe 29.

[0042] The air pipe 29 is slidably connected to the air trough 28 in another box 111, so that air can enter the other air trough 28 from the air trough 28 in one box 111 through the air pipe 29.

[0043] In use, the operator first fixes the four boxes 111 to the wire rope and inserts the sliding plates 112 of the four boxes 111 into the corresponding sliding grooves 113. Then, the compression assembly 12 is fixed to two boxes 111, so that the four boxes 111 are combined into a whole. After the four boxes 111 are assembled, the guide wheel 132 drives the extension frame 131 to move outward, and the extension frame 131 drives the boxes 111 to move outward, so that the four boxes 111 move outward together, ensuring that the boxes 111 and the wire rope maintain a certain gap. At the same time, the compression spring 123 and the telescopic rod 122 connect with the connecting rod. The combined use of the connecting frame 121 and the housing 111 keeps the wire rope in the center of the detection box 1. As the wire rope moves, the magnetic leakage detector 22 inside the housing 111 continuously detects the magnetic leakage of the wire rope. In rainy weather, the motor 25 drives the rotating shaft 26 to rotate, which in turn drives the fan blade 27 to rotate, blowing external air into the air trough 28. The air is then blown into the gas guide slots 23 in the four detection frames 21 inside the housing 111 through the air trough 28 and the connecting pipe 29, and sprayed out from both sides of the detection frame 21. The gas is sprayed out from inside the detection box 1, blocking external rainwater.

[0044] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A device for magnetic flux leakage detection of a steel wire rope, comprising a detection box (1), characterized in that: The detection box (1) comprises a telescopic assembly (11); The telescopic assembly (11) comprises a box body (111), one side of the box body (111) is fixedly installed with a sliding plate (112), the other side of the box body (111) is provided with a sliding groove (113), and the outer surface of the box body (111) is fixedly installed with a shielding plate (114).

2. The magnetic flux leakage detection apparatus for a steel wire rope according to claim 1, characterized by: The detection box (1) further comprises an extrusion assembly (12), the extrusion assembly (12) comprises a connecting frame (121), the inner surface of the connecting frame (121) is fixedly installed with a telescopic rod (122), and the outer surface of the telescopic rod (122) is sleeved with a compression spring (123).

3. The magnetic flux leakage detection apparatus for a steel wire rope according to claim 2, characterized by: One side of the connecting frame (121) is fixedly connected with the outer surface of the box body (111), and both ends of the compression spring (123) are fixedly connected with the inner wall of the connecting frame (121).

4. The magnetic flux leakage detection apparatus for steel wire ropes according to claim 1, characterized in that: The detection box (1) further comprises a guide assembly (13), the guide assembly (13) comprises an extension frame (131), the inner surface of the extension frame (131) is fixedly connected with the outer surface of the box body (111), and the inner surface of the extension frame (131) is rotatably installed with a guide wheel (132).

5. The magnetic flux leakage detection apparatus for steel wire ropes according to claim 1, characterized in that: The inner surface of the box body (111) is fixedly installed with a jet detection mechanism (2), the jet detection mechanism (2) comprises a detection frame (21), the inner surface of the detection frame (21) is fixedly installed with a magnetic flux leakage detector (22), and the inner surface of the detection frame (21) is provided with a gas guide groove (23).

6. The magnetic flux leakage detection apparatus for a wire rope according to claim 5, characterized by: The jet detection mechanism (2) further comprises a gas tank (24), the top of the gas tank (24) is fixedly connected with the outer surface of the shielding plate (114), the inner surface of the gas tank (24) is fixedly installed with a motor (25) through a fixing frame, the output end of the motor (25) is fixedly installed with a rotating shaft (26) through a shaft coupling, and the outer surface of the rotating shaft (26) is fixedly installed with a fan blade (27).

7. The magnetic flux leakage detection apparatus for steel wire ropes according to claim 5, characterized in that: The jet detection mechanism (2) further comprises a gas groove (28), the gas groove (28) is arranged on the shielding plate (114) and the box body (111), and the inner surface of the gas groove (28) is provided with a gas connecting pipe (29).

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