An anti-explosion steel wire rope detection device

CN224758456UActive Publication Date: 2026-09-15YUNNAN TONGWEI HIGH PURITY CRYSTALLINE SILICON CO LTD
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Patent Information

Application Number
CN202522034873.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-22
Publication Date
2026-09-15
Estimated Expiration
2035-09-22

AI Technical Summary

Benefits of technology

[0018] This invention solves the industry problem that traditional wire rope detection devices cannot be used in flammable and explosive environments through a split-type explosion-proof design. The detection unit combines intrinsically safe circuitry with overall encapsulation, while the data acquisition and processing unit is protected by an explosion-proof enclosure, achieving safe and reliable operation in explosive environments. This effectively expands the product's application scenarios and meets the safety production needs of high-risk industries such as mining and chemical industries.

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Abstract

The utility model provides a kind of anti-explosion steel wire rope detection device, the purpose is to solve the technical problems that existing steel wire rope detection device lacks anti-explosion design, cannot be applicable to place with anti-explosion requirement.The device includes detection unit, with detection unit electrical connection, for receiving and processing the acquisition unit of detection unit acquisition signal, and with acquisition unit communication connection, for receiving the data of acquisition unit and carrying out operation and result display data processing unit;Detection unit includes openable and closable outer shell, inner shell and detection module being set in outer shell body, inner shell outer perimeter is equipped with mounting groove, and detection module is set in mounting groove;The inside cavity of outer shell body is filled with anti-explosion glue, and forms the pouring sealing type anti-explosion protection layer that inner shell and detection module are covered.The utility model detection unit is combined by intrinsic safety circuit and integral pouring sealing, and acquisition and processing unit are protected by explosion-proof box, realize safe, reliable operation in explosive environment.
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Description

Technical Field

[0001] This utility model relates to the field of steel wire rope testing technology, and in particular to an explosion-proof steel wire rope testing device. Background Technology

[0002] As a critical load-bearing component, wire rope plays an irreplaceable role in various industries such as mine hoisting, port lifting, cableway transportation, elevators, and suspension bridges. Because its safety and reliability during operation are directly affected by damage and its development trend, various types of damage inevitably occur with prolonged use. These damages reduce its performance and seriously affect its normal and safe use. Therefore, regular inspection of wire ropes is particularly important. Since most wire ropes are made of high-carbon steel with good magnetic permeability and have complex surface structures, electromagnetic detection is the preferred method. The principle of magnetic leakage detection technology is to use a permanent magnet excitation system to magnetize the wire rope to a saturated state. When any discontinuity (i.e., damage) appears on the surface of the magnetized wire rope in contact with air, it will release a stray magnetic field into the surrounding space. The stray magnetic field vector detection array can detect these stray magnetic field changes caused by defects and use the change in magnetic induction intensity as the basis for judging whether damage exists. However, these signals may be affected by the lift-off distance. Therefore, an effective auxiliary detection device is needed to improve the detection accuracy and efficiency of wire rope defects. In addition, the existing wire rope detection device lacks explosion-proof design and cannot be used in places with explosion-proof requirements. Summary of the Invention

[0003] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide an explosion-proof wire rope detection device, which solves the technical problem that the existing wire rope detection devices lack explosion-proof design and cannot be used in places with explosion-proof requirements.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An explosion-proof steel wire rope detection device includes: a detection unit comprising: an openable outer shell; an inner shell and a detection module disposed within the outer shell; an installation groove provided on the outer periphery of the inner shell; the detection module disposed within the installation groove for collecting magnetic field signals of the steel wire rope; the internal cavity of the outer shell being filled with explosion-proof adhesive to form a potted explosion-proof protective layer covering the inner shell and the detection module; a data acquisition unit electrically connected to the detection unit for receiving and processing signals acquired by the detection unit; and a data processing unit communicatively connected to the data acquisition unit for receiving data from the data acquisition unit, performing calculations, and displaying results.

[0006] This invention solves the industry problem that traditional wire rope detection devices cannot be used in flammable and explosive environments through a split-type explosion-proof design. The detection unit combines intrinsically safe circuitry with overall encapsulation, while the data acquisition and processing unit is protected by an explosion-proof enclosure, achieving safe and reliable operation in explosive environments. This effectively expands the product's application scenarios and meets the safety production needs of high-risk industries such as mining and chemical industries.

[0007] Optionally, the detection unit is connected to the acquisition unit via a cable; the outer casing is provided with a cable outlet, and an explosion-proof flexible conduit is provided at the cable outlet.

[0008] Optionally, the detection module is a simple intrinsically safe circuit; the cable is an intrinsically safe flame-retardant cable.

[0009] Optionally, the outer shell includes: a first outer shell; a second outer shell, one side of which is hinged to the first outer shell, and the other side is closably connected by a locking structure; wherein the first outer shell and the second outer shell are respectively provided with semi-circular cavities adapted to the inner shell, and an annular cavity is formed inside when the two are joined together.

[0010] Optionally, the first and second outer shells are provided with arc-shaped grooves at both ends that communicate with the semi-circular cavity, and the diameter of the circular hole after the two arc-shaped grooves are joined is smaller than the diameter of the cavity; the inner shell has protrusions at both ends with diameters that match the circular hole.

[0011] Optionally, the locking structure includes: a latch disposed on the second housing; and a hook disposed on the first housing that can engage with the latch.

[0012] Optionally, the inner housing includes: a first inner housing and a second inner housing, respectively disposed within the semi-circular cavities of the first outer housing and the second outer housing, and the first inner housing and the second inner housing, when joined together, form a detection hole for a steel wire rope to pass through; the outer periphery of the first inner housing and the second inner housing are respectively provided with semi-circular mounting grooves, and detection modules are respectively disposed in the two mounting grooves; the first outer housing and the second outer housing are respectively provided with cable outlets, and the cables of the two detection modules are respectively led out through the two cable outlets.

[0013] Optionally, multiple semi-circular mounting grooves are respectively formed on the first inner shell and the second inner shell.

[0014] Optionally, connecting pieces extend outward from the outer walls on both sides of the first inner shell and the second inner shell, and the connecting pieces on both sides of the first inner shell and the second inner shell are paired together; the first outer shell and the second outer shell are respectively provided with stepped grooves that are adapted to the connecting pieces, and the opposite stepped grooves are aligned to form a receiving groove for accommodating a set of connecting pieces.

[0015] Optionally, the acquisition unit includes: a first explosion-proof box; an acquisition module disposed inside the first explosion-proof box and electrically connected to the detection unit for receiving signals; and a first power supply module disposed inside the first explosion-proof box for supplying power to the acquisition module.

[0016] Optionally, the data processing unit includes: a second explosion-proof enclosure; a data processing module disposed inside the second explosion-proof enclosure and communicatively connected to the acquisition unit; and a second power supply module disposed inside the second explosion-proof enclosure for supplying power to the data processing module.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention solves the industry problem that traditional wire rope detection devices cannot be used in flammable and explosive environments through a split-type explosion-proof design. The detection unit combines intrinsically safe circuitry with overall encapsulation, while the data acquisition and processing unit is protected by an explosion-proof enclosure, achieving safe and reliable operation in explosive environments. This effectively expands the product's application scenarios and meets the safety production needs of high-risk industries such as mining and chemical industries. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of one embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of one embodiment of the detection unit in this utility model.

[0022] Figure 3 This is a schematic diagram of the outer shell of this utility model.

[0023] Figure 4 This is a schematic diagram of the inner shell structure in this utility model.

[0024] Figure label:

[0025] 100. Detection unit; 1. Outer shell; 1a. First outer shell; 1b. Second outer shell; 10. Arc groove; 11. Cavity; 12. Cable outlet; 13. Hinge; 14. Locking structure; 141. Lock; 142. Hook; 2. Inner shell; 2a. First inner shell; 2b. Second inner shell; 21. Mounting groove; 22. Boss; 23. Detection hole; 24. Connecting piece; 3. Detection module;

[0026] 200. Acquisition unit; 4. First explosion-proof box; 5. Acquisition module; 6. First power supply module;

[0027] 300. Data processing unit; 7. Second explosion-proof box; 8. Data processing module; 9. Second power supply module;

[0028] 400. Steel wire rope. Detailed Implementation

[0029] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the embodiments of this utility model application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0030] In the description of the embodiments of this utility model application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "end", "side" etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, are only for the convenience of describing the embodiments of this utility model application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this utility model application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] In the embodiments of this utility model application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model application according to the specific circumstances.

[0033] In the embodiments of this utility model application, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The following disclosure provides many different implementations or examples for carrying out different structures of the embodiments of this utility model application. To simplify the disclosure of the embodiments of this utility model application, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of this utility model application. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of this utility model application; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0035] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0036] Example 1

[0037] like Figure 1 As shown in the figure, this utility model application provides an explosion-proof steel wire rope detection device, which includes a detection unit 100, a data acquisition unit 200 and a data processing unit 300, which are of a split structure.

[0038] The detection unit 100 is used to collect the magnetic field signal of the wire rope. The acquisition unit 200 is electrically connected to the detection unit 100 and is used to receive and process the signal collected by the detection unit 100. The data processing unit 300 is communicatively connected to the acquisition unit 200 and is used to receive the data from the acquisition unit 200, perform calculations, and display the results.

[0039] Example 2

[0040] like Figure 1-4 As shown, based on Embodiment 1, the detection unit 100 includes an outer shell 1, an inner shell 2, and a detection module 3.

[0041] The outer shell 1 is an openable shell with an internal cavity 11. The inner shell 2 is disposed within the cavity 11 inside the outer shell 1. An installation groove is provided on the outer periphery of the inner shell 2, into which the detection module 3, used to collect the magnetic field signal of the steel wire rope, is embedded. The internal cavity 11 of the outer shell 1 is filled with explosion-proof adhesive, thus forming a potted explosion-proof protective layer that encapsulates the inner shell 2 and the detection module 3. By completely potting explosion-proof adhesive inside the outer shell 1, an effective explosion-proof effect can be achieved.

[0042] Furthermore, the detection unit 100 is connected to the acquisition unit 200 via a cable. The housing 1 has a cable outlet 12 for cable exit, and an explosion-proof flexible conduit is installed at the cable outlet 12. Schematic, the cable outlet 12 is a threaded hole, within which the explosion-proof flexible conduit is installed, through which the cable exits. The explosion-proof flexible conduit ensures explosion-proof integrity, guarantees the safe sealing of the entire passage, and improves explosion-proof performance.

[0043] Optionally, detection module 3 uses a simple intrinsically safe circuit.

[0044] As an implementation scenario, in this scenario, refer to Figure 2 and Figure 3 As shown, the outer casing 1 includes a first outer casing 1a and a second outer casing 1b. One side of the second outer casing 1a is hinged to the first outer casing via a hinge 13, and the other side is detachably connected via a locking structure 14.

[0045] The first outer shell 1a and the second outer shell 1b are respectively provided with semi-circular cavities that are adapted to the inner shell 2. After the two semi-circular cavities are joined together, an annular cavity 11 is formed inside. The annular cavity 11 is used to accommodate the through channel of the wire rope and to accommodate the inner shell 2.

[0046] Optionally, the first outer shell 1a and the second outer shell 1b have arc-shaped grooves 10 at both ends that communicate with the semi-circular cavity. The diameter of the circular hole after the two arc-shaped grooves 10 are engaged is smaller than the diameter of the cavity 11. Correspondingly, the structure of the inner shell 2 is adapted to the cavity 11 and the circular hole. For example, the outer diameter of the inner shell 2 is adapted to the inner diameter of the annular cavity 11. During assembly, the outer wall of the inner shell 2 fits against the inner wall of the annular cavity 11. The inner shell 2 has protrusions 22 at both ends with diameters adapted to the circular hole, and the outer wall of the protrusions 22 fits against the inner wall of the circular hole.

[0047] Optionally, the locking structure 14 includes a latch 141 disposed on the second housing 1b and a hook 142 disposed on the first housing 1a that can cooperate with the latch 141. In other embodiments, the locking structure 14 may also employ other existing snap-fit ​​locking components. The hinged and snap-fit ​​design makes the detection unit easy to open and close, greatly facilitating the insertion and removal of the wire rope, improving detection efficiency, and the annular cavity formed by the mating can tightly wrap the detection module around the wire rope, ensuring signal acquisition quality. At the same time, the closed structure also facilitates the potting of explosion-proof adhesive, enhancing explosion-proof reliability.

[0048] As an implementation scenario, in this scenario, refer to Figure 4 As shown, the inner shell 2 includes a first inner shell 2a and a second inner shell 2b, which are respectively disposed within the semi-circular cavities of the first outer shell 1a and the second outer shell 1b. Semi-circular mounting grooves 21 are respectively formed on the outer periphery of the first inner shell 2a and the second inner shell 2b. Detection modules 3 are respectively disposed within the mounting grooves 21. After the first inner shell 2a and the second inner shell 2b are aligned, a detection hole 23 is formed inside for the steel wire rope 400 to pass through. The structure of the detection module 3 is adapted to the semi-circular mounting groove 21, that is, the detection module is in the shape of a semi-circular ring. The ring-shaped structure of the detection module is beneficial for collecting magnetic field signals in all directions around the steel wire rope, making the detection results more comprehensive and accurate. Furthermore, its placement within the ring-shaped mounting groove also improves the overall stability.

[0049] Optionally, the first housing 1a and the second housing 1b are respectively provided with cable outlets 12 for cable outgoing, and the cables of the two detection modules 3 are respectively led out through the two cable outlets 12.

[0050] Optionally, multiple semi-circular mounting slots can be formed on the first inner shell 2a and the second inner shell 2b respectively, and correspondingly, the detection module 3 can also be multiple sets.

[0051] In one embodiment, connecting pieces 24 extend outward from the outer walls of the first inner shell 2a and the second inner shell 2b near the opening of the semi-circular mounting groove 21, respectively. The connecting pieces 24 on both sides of the first inner shell 2a and the second inner shell 2b are paired together. Correspondingly, the first outer shell 1a and the second outer shell 2b are respectively provided with stepped grooves adapted to the connecting pieces 24. When the opposing stepped grooves are aligned, they form a receiving groove to accommodate a pair of connecting pieces. During assembly, the opposing pair of connecting pieces can be fixed by fastening screws. A detection module 3 is embedded in each semi-circular mounting groove 21. The stepped groove is not shown in the figure; it is formed within the outer shell and its structure is adapted to the connecting pieces, that is, the connecting pieces on the first inner shell correspond to the connecting pieces on the second inner shell, and the receiving groove can accommodate a corresponding pair of connecting pieces.

[0052] In one embodiment, reference Figure 1As shown, the acquisition unit 200 includes: a first explosion-proof box 4, an acquisition module 5, and a first power module 6. The acquisition module 5 is disposed inside the first explosion-proof box 4 and is electrically connected to the detection unit 100 via a cable for receiving signals. The first power module 6 is disposed inside the first explosion-proof box 4 and is electrically connected to the acquisition module 5 for supplying power to the acquisition module 5.

[0053] In one implementation, continue to refer to Figure 1 As shown, the data processing unit 300 includes: a second explosion-proof enclosure 7, a data processing module 8, and a second power supply module 9. The data processing module 8 is disposed within the second explosion-proof enclosure 7 and is communicatively connected to the acquisition unit 200. The second power supply module 9 is disposed within the second explosion-proof enclosure 7 and is used to supply power to the data processing module 8. For example, the data processing module 8 can be an all-in-one computer, with its explosion-proof mouse installed outside the explosion-proof enclosure for convenient computer operation. The all-in-one computer performs algorithmic calculations and displays the detection waveforms and results.

[0054] The acquisition unit and processing unit are provided with explosion-proof protection through an explosion-proof enclosure. This not only overcomes the difficulty of making an integral explosion-proof enclosure for the irregularly shaped housing of the detection device, but also reduces the size of the explosion-proof enclosure by the split structure, effectively reducing costs.

[0055] Optionally, all cables are intrinsically safe flame-retardant cables, and all inlet and outlet holes are sealed with explosion-proof sealant. Specifically, the connecting cables between the detection unit 100 and the acquisition unit 200, and / or the communication cables between the acquisition unit 200 and the data processing unit 300, are all intrinsically safe flame-retardant cables, and all cable interfaces passing through the explosion-proof enclosure are sealed with explosion-proof sealing components (explosion-proof sealant). The intrinsically safe flame-retardant cables and explosion-proof sealing components further improve the explosion-proof effect.

[0056] During installation, the outer shell 1 of the detection unit can be opened first, and the second inner shell 2b, which integrates the lower detection module, can be placed in the middle of the second outer shell 1b. Then, the first inner shell 2a, which contains the upper detection module, can be fastened onto the second inner shell 1b. At this time, the steel wire rope 400 to be tested is wrapped in the detection hole 23 formed by the inner shell. Subsequently, the first outer shell 1a and the second outer shell 1b are locked and fixed by the locking structure 14. After the inner shell 2 is accurately positioned, the whole body is potted with special explosion-proof glue that meets the standard (such as GB / T3836 potting type "m" protection requirements) so that the cavity between the inner shell 2 and the outer shell 1 is completely filled. After curing, a strong and sealed explosion-proof whole is formed. As an alternative potting process, the operation can also be carried out in steps: first, the second inner shell 2b is placed on the second outer shell 1b and the first potting is performed. After it has cured, the first inner shell 2a is then fastened and the first outer shell 1a and the second outer shell 1b are locked. Finally, the joint between the first inner shell 2a and the first outer shell 1a is potted a second time to ensure the overall explosion-proof sealing.

[0057] During testing, the detection module 3 tests the wire rope, and the acquisition module 5 receives the raw magnetic field signal acquired by the detection module 3 and transmits the data to the data processing module 8. After receiving the data, the data processing module 8 performs calculations and displays the detection waveform and results.

[0058] This invention separates the detection unit and the acquisition unit. The simple intrinsically safe circuit detection unit is encapsulated with explosion-proof glue for explosion protection, while the more complex circuit acquisition unit is encapsulated in an explosion-proof box. This overcomes the difficulty of making an integral explosion-proof box for the irregularly shaped housing of the detection device, and the split structure reduces the size of the explosion-proof box, effectively reducing costs.

[0059] Parts not described in detail in this embodiment are technologies well-known in the art. For example, the detection module, acquisition unit, and data processing unit are all mature existing technologies. This embodiment only provides a detailed description of the inventive points of this utility model. The specific working principles of detection, acquisition, and data processing are known to those skilled in the art, and therefore will not be repeated in this embodiment. In addition, it should be noted that the length of the inner shell is adapted to the length of the outer shell. When multiple mounting slots are provided in the upper and lower parts of the inner shell, the length of the outer shell also increases accordingly. The positions and sizes of the components in the accompanying drawings of this utility model are schematic and are only used to express the concept of this technical solution, and do not involve limitations on the specific positions and sizes in actual embodiments.

[0060] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A device for detecting explosion-proof steel wire rope, characterized in that, include: The detection unit includes: Openable outer shell; The inner shell and detection module are disposed within the outer shell; The inner shell is provided with a mounting groove on its outer periphery; The detection module is installed in the mounting slot and is used to collect the magnetic field signal of the wire rope. The internal cavity of the outer shell is filled with explosion-proof glue to form a potting-type explosion-proof protective layer that covers the inner shell and the detection module. The acquisition unit is electrically connected to the detection unit and is used to receive and process the signals acquired by the detection unit; The data processing unit is communicatively connected to the acquisition unit and is used to receive data from the acquisition unit, perform calculations, and display the results.

2. The explosion-proof steel wire rope testing device according to claim 1, characterized in that, The detection unit is connected to the acquisition unit via a cable; the outer casing is provided with a cable outlet, and an explosion-proof flexible hose is provided at the cable outlet.

3. The explosion-proof steel wire rope testing device according to claim 2, characterized in that, The detection module is a simple intrinsically safe circuit; the cable is an intrinsically safe flame-retardant cable.

4. The explosion-proof steel wire rope testing device according to claim 1, characterized in that, The outer casing includes: First outer shell; The second outer shell is hinged to the first outer shell on one side and connected to it in an openable and closable manner on the other side via a locking structure; The first and second outer shells are respectively provided with semi-circular cavities that are adapted to the inner shell, and when the two are put together, an annular cavity is formed inside.

5. The explosion-proof steel wire rope testing device according to claim 4, characterized in that, The first and second outer shells have arc-shaped grooves at both ends that communicate with the semi-circular cavity. The diameter of the circular hole after the two arc-shaped grooves are joined is smaller than the diameter of the annular cavity. The inner shell has protrusions at both ends with diameters that match the circular hole.

6. The explosion-proof steel wire rope testing device according to claim 4, characterized in that, The locking structure includes: The latch is located on the second housing; A hook is provided on the first housing that can engage with the latch.

7. The explosion-proof steel wire rope testing device according to claim 4, characterized in that, The inner shell includes: The first inner shell and the second inner shell are respectively disposed in the semi-circular cavity of the first outer shell and the second outer shell, and after the first inner shell and the second inner shell are joined together, a detection hole for the steel wire rope to pass through is formed inside. The outer periphery of the first inner shell and the second inner shell are respectively provided with semi-circular mounting grooves, and detection modules are respectively installed in the two mounting grooves. The first and second housings are respectively provided with cable outlets, and the cables of the two detection modules are led out through the two cable outlets respectively.

8. The explosion-proof steel wire rope testing device according to claim 7, characterized in that: Multiple semi-circular mounting slots are respectively formed on the first inner shell and the second inner shell. And / or, the outer walls on both sides of the first inner shell and the second inner shell are respectively provided with connecting pieces, and the connecting pieces on both sides of the first inner shell and the second inner shell are paired together; the first outer shell and the second outer shell are respectively provided with stepped grooves adapted to the connecting pieces, and the opposite stepped grooves are aligned to form a receiving groove for accommodating a set of connecting pieces.

9. The explosion-proof steel wire rope testing device according to claim 1, characterized in that, The acquisition unit includes: First explosion-proof box; The acquisition module is located inside the first explosion-proof box and is electrically connected to the detection unit for receiving signals; The first power supply module is located inside the first explosion-proof box and is used to supply power to the acquisition module.

10. The explosion-proof steel wire rope testing device according to claim 1, characterized in that, The data processing unit includes: Second explosion-proof box; The data processing module is located inside the second explosion-proof box and is communicatively connected to the acquisition unit; The second power module, located inside the second explosion-proof enclosure, is used to supply power to the data processing module.