Broken wire detection device for steel wire rope

Abstract

The invention provides a steel wire rope broken wire detection device, and belongs to the technical field of steel wire rope detection. The multiple detection assemblies are installed in the circular inner cavity of the annular support in the annular array mode, and each detection assembly is connected with the corresponding roller and the corresponding recognition part through the corresponding telescopic piece, so that when the to-be-detected steel wire rope penetrates through the circle center of the circular inner cavity, the to-be-detected steel wire rope is recognized; the roller of each detection assembly abuts against the outer side of the to-be-detected steel wire rope, when the size of the cross section of the to-be-detected steel wire rope is changed due to wire breakage, the change can be transmitted to the telescopic part through the roller, and the recognition part is triggered through the movement of the telescopic part. The recognition part recognizes the stretching or retracting movement of the telescopic piece so as to correspond to the internal wire breakage or external wire breakage condition of the steel wire rope, detection is more comprehensive, data are more accurate, detection directly acts on the steel wire rope, reference styles do not need to be additionally arranged, the detection efficiency and the accuracy of the detection result are improved, and the detection cost is also reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of wire rope detection, and in particular to a wire rope broken wire detection device. Background Art

[0002] Steel wire rope is usually made of multiple layers of steel wire twisted into strands, which are then spirally wound around the rope core. It is not only strong and has a strong load-bearing capacity, but is also corrosion-resistant and can be used in harsh environments. It is widely used.

[0003] During the use of wire ropes, due to the need to withstand large forces, the problem of single or multiple strands of steel wire being easily broken during later use, that is, the problem of wire rope breakage. In addition, after the wire breakage occurs, if the broken wire is the steel wire on the outside of the wire rope, the broken wire will curl due to the stress change and usually warp outward, causing the cross-section of the wire rope to increase at the break. If the broken wire is the steel wire on the inside of the wire rope, since the broken wire is wrapped by the steel wire on the outside, it is confined to the inside of the whole, and the warping problem will not occur. However, the steel wire rope at this point will be subjected to a large force with a smaller cross-section for a long time, causing the steel wire rope to be stretched at this point, thereby causing the cross-section of the steel wire rope to be reduced at the break. That is, when a wire in the wire rope breaks, the cross-section of the steel wire rope at the break will appear to be thicker or thinner.

[0004] The existing methods for detecting broken wires in wire ropes on the market usually adopt a non-destructive testing method for wire ropes as disclosed in patent CN102297805A, which requires the production of a comparison pattern. According to the diameter range of the wire rope to be tested, lengths of wire ropes with different diameters are cut to produce a non-destructive testing comparison pattern for wire ropes. Two-meter-long wire ropes with the same wire rope structure are selected and broken in the middle to produce the same defect. The breaking tensile test of the wire ropes is performed separately. On the comparison pattern produced, a wire rope electromagnetic tester is used to obtain different defect detection values ​​through magnetization, calibration and testing. A comparison pattern parameter comparison table is made corresponding to the breaking tensile force. The wire rope detection data is obtained based on the test data of the on-site test and the comparison pattern parameter comparison table, and the breaking tensile force of the tested wire rope is calculated to draw a detection judgment conclusion. Although the above method can meet the needs of wire rope broken wire detection, it requires pre-production of comparison patterns, and subsequent comparison testing using electromagnetic testers to draw conclusions. This not only causes waste of materials, high testing costs and low efficiency, but also the comparison patterns produced cannot be guaranteed to be completely consistent with the tested wire rope, resulting in inaccurate detection structure and affecting the detection effect. Summary of the Invention

[0005] In response to the above-mentioned problems existing in the prior art, the present invention aims to provide a wire rope broken wire detection device, in which several detection components extending toward the center are arranged on the inner side of the annular bracket, the detection components are provided with rollers and identification parts, and the wire rope to be detected passes through the center of the structure surrounded by the several detection components, and the rollers of each detection component are pressed on the outer side wall of the wire rope to be detected, so that when the wire rope is pulled, if the wire rope is broken and its cross-section changes, the fluctuation of the roller can be transmitted to the identification part, and a record is made through the action of the identification part, thereby meeting the wire rope broken wire detection needs, and directly acting on the wire rope to be detected, without the need to make a separate comparison pattern, reducing the detection cost, improving the detection efficiency, and obtaining more accurate results.

[0006] The specific technical solutions are as follows:

[0007] A wire rope broken wire detection device has the following characteristics, including:

[0008] The annular bracket has a circular inner space;

[0009] A plurality of detection components are distributed in the circular inner space of the annular bracket in an annular array, and each detection component extends toward the center of the circular inner space. Each detection component includes a telescopic part, a roller and an identification part. The telescopic part is arranged radially along the circular inner space, one end of the telescopic part is fixed on the inner wall of the circular inner space, and the other end of the telescopic part is rotatably installed with a roller. The identification part is set on the telescopic part, and the extension or retraction of the telescopic part triggers the identification part. The number of detection components in the circular inner space is even, and two detection components form a pair of detection groups. The telescopic part of one of the detection components in the same detection group is locked, and the remaining detection component still maintains a telescopic state.

[0010] The above-mentioned wire rope broken wire detection device, wherein the telescopic part includes a telescopic sleeve, a telescopic shaft and a telescopic spring, one end of the telescopic sleeve is fixed on the inner wall of the circular inner cavity of the annular bracket, and at the same time, the telescopic shaft is slidably arranged in the telescopic sleeve, and one end of the telescopic shaft extends toward the center of the circular inner cavity, the roller is rotatably installed on the end of the telescopic shaft extending toward the center of the circular inner cavity, the telescopic spring is arranged in the telescopic sleeve, and the end of the telescopic shaft located in the telescopic sleeve abuts on the telescopic spring.

[0011] In the above-mentioned wire rope broken wire detection device, a locking hole connected to the inner hole of the telescopic sleeve is provided, a limiting hole is provided at one end of the telescopic shaft located in the telescopic sleeve, and a pin shaft is inserted into the locking hole.

[0012] In the above-mentioned wire rope broken wire detection device, the cross section of the telescopic shaft is rectangular, and the cross section of the inner hole of the telescopic sleeve is also rectangular.

[0013] The above-mentioned wire rope broken wire detection device, wherein the identification part includes a connecting rod, a moving contact piece, a first static contact piece group and a second static contact piece group, and an avoidance cavity connected to its inner hole is opened on the telescopic sleeve, one end of the connecting rod is connected to the part of the telescopic shaft corresponding to the avoidance cavity, the moving contact piece is installed on the connecting rod, and, in the avoidance cavity and along the moving direction of the telescopic shaft, the first static contact piece group and the second static contact piece group are respectively arranged on both sides of the moving contact piece.

[0014] The above-mentioned wire rope broken wire detection device also includes an adaptation component, which is arranged between the connecting rod and the telescopic shaft. The adaptation component includes a rotating shaft, a forward torsion spring, a reverse torsion spring and a support seat. Support seats are provided on both sides of the telescopic shaft and the part located in the avoidance cavity. The two ends of the rotating shaft are respectively rotatably installed on the two support seats. One end of the connecting rod is fixedly connected to the middle of the rotating shaft and is arranged along the radial direction of the rotating shaft. The torsion directions of the forward torsion spring and the reverse torsion spring are exactly opposite and are respectively mounted on the two ends of the rotating shaft. One end of the forward torsion spring and the reverse torsion spring are respectively connected to the corresponding support seats, and the other ends are both connected to the rotating shaft.

[0015] The above-mentioned wire rope broken wire detection device, wherein a synchronous adjustment frame is provided between the telescopic shaft and the roller, the synchronous adjustment frame includes a mounting plate, an adjustment seat, a mounting rod and a locking block, the mounting plate is installed on the telescopic shaft and the adjustment seats are hinged at both ends, a mounting rod is provided on each adjustment seat and on the side facing away from each other, the roller is installed between the two mounting rods, adjustment teeth are provided on the opposite sides of the two adjustment seats and the adjustment teeth on the two adjustment seats are engaged with each other, a locking block is disassembled and installed on the mounting plate and located next to an adjustment seat, and the locking block is also provided with a limiting tooth that engages with the adjustment teeth.

[0016] The above-mentioned wire rope broken wire detection device also includes a sliding rod and a sliding cylinder. One end of the sliding rod is hinged to the end of a mounting rod away from the adjustment seat, and a sliding cylinder is hinged on the mounting rod of the other adjustment seat. The other end of the sliding rod is slidably arranged in the sliding cylinder.

[0017] The positive effects of the above technical solution are:

[0018] The above-mentioned wire rope broken wire detection device is arranged in an array with several detection components in the circular inner space of the annular bracket, and each detection component is provided with a roller, a telescopic member and an identification part, and the telescopic member is arranged along the radial direction of the circular inner space, and the roller and the identification part are respectively arranged at both ends of the telescopic member. When the wire rope to be detected passes through the center of the circular inner space, the rollers of several detection components all abut against the outside of the wire rope to be detected. When the cross-section of the wire rope changes, the roller can push the telescopic member to move, and the identification part is triggered by the telescopic member to record, so as to determine whether a wire breakage problem occurs at that location. Moreover, the telescopic member can correspond to the internal or external wire breakage of the wire rope by extending or retracting, so that the detection is more comprehensive and the information is more specific. Moreover, it directly acts on the wire rope to be detected, which not only ensures the accuracy and effectiveness of the detection results, but also does not require setting a reference pattern, thereby improving the detection efficiency and reducing the detection cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of an embodiment of a wire rope broken wire detection device of the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of part A;

[0021] Figure 3 for Figure 2 Cross-sectional view along line BB;

[0022] Figure 4 A state diagram of a synchronous adjustment frame according to a preferred embodiment of the present invention;

[0023] Figure 5 This is another state diagram of a synchronous adjustment frame according to a preferred embodiment of the present invention.

[0024] In the accompanying drawings: 1. annular bracket; 11. circular inner space; 2. detection component; 21. telescopic part; 22. roller; 23. identification part; 24. adaptation component; 25. synchronous adjustment frame; 211. telescopic sleeve; 212. telescopic shaft; 213. telescopic spring; 231. connecting rod; 232. moving contact piece; 233. first static contact piece group; 234. second static contact piece group; 241. rotating shaft; 242. forward torsion spring; 243. reverse torsion spring; 244. support seat; 251. mounting plate; 252. adjustment seat; 253. mounting rod; 254. locking block; 255. sliding rod; 256. sliding cylinder; 2111. locking hole; 2112. avoidance cavity; 3. wire rope. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the following embodiments are combined with the attached Figure 1 To the attached Figure 5The technical solution provided by the present invention is described in detail, but the following content is not intended to limit the present invention.

[0026] Figure 1 This is a structural diagram of an embodiment of a wire rope broken wire detection device of the present invention; Figure 2 for Figure 1 An enlarged view of part A in the figure. Figure 1 and Figure 2 As shown, the wire rope broken wire detection device provided in this embodiment includes: an annular bracket 1 and a plurality of detection components 2. The plurality of detection components 2 are installed through the annular bracket 1, and the plurality of detection components 2 are used to detect whether the wire rope 3 to be detected has broken wires.

[0027] Specifically, the annular bracket 1 has a circular inner space 11, which provides conditions for the installation of the subsequent detection component 2 and the passage of the steel wire rope 3 to be detected;

[0028] Specifically, a plurality of detection components 2 are distributed in a circular inner cavity 11 of the annular support 1 in an annular array, and each detection component 2 extends toward the center of the circular inner cavity 11, providing conditions for each subsequent detection component 2 to act on the wire rope 3 located at the center of the circular inner cavity 11. In addition, each detection component 2 includes a telescopic member 21, a roller 22, and an identification portion 23. The telescopic member 21 is arranged radially along the circular inner cavity 11, so that the telescopic direction of the telescopic member 21 is the radial direction of the circular inner cavity 11, and is also the radial direction of the wire rope 3 to be detected that subsequently passes through the center of the circular inner cavity 11, thereby better detecting the cross-sectional changes of the wire rope 3 to be detected and determining whether a broken wire occurs. In addition, one end of the telescopic member 21 is fixed to the inner wall of the circular inner cavity 11, and the other end of the telescopic member 21 is rotatably mounted with a roller 22, realizing the installation of the roller 22 in the circular inner cavity 11, providing conditions for the subsequent roller 22 to abut against the surface of the wire rope 3 to be detected. At the same time, the roller 22 can also float through the telescopic member 21, meeting the need to sense changes in the cross-section of the steel wire rope 3 to be detected. In addition, the identification unit 23 is set on the telescopic member 21, and the extension or retraction of the telescopic member 21 triggers the identification unit 23, so that the extension and retraction movement of the telescopic member 21 can be recorded by the identification unit 23, meeting the detection mark requirement. During inspection, the steel wire rope 3 to be inspected passes through the range surrounded by the rollers 22 of several inspection components 2 in the circular inner space 11, so that the rollers 22 of each inspection component 2 are in contact with the outer wall of the steel wire rope 3 to be inspected, and the steel wire rope 3 to be inspected is pulled by a uniformly moving traction machine to move uniformly relative to the inspection component 2, so that each inspection component 2 can contact the steel wire rope 3 to be inspected through the rollers 22. If the cross-section of the steel wire rope 3 changes, the rollers 22 can push the telescopic part 21 to perform telescopic movement, thereby triggering the identification part 23 to mark, thereby judging that the steel wire rope 3 has a broken wire defect at that location, and regardless of whether the cross-section of the steel wire rope 3 increases or decreases, inspection can be achieved, so that whether the steel wire rope 3 has internal or external broken wires, inspection can be achieved. In addition, since the detection component 2 acts directly on the steel wire rope 3 to be detected, the accuracy of the detection results is guaranteed, the detection efficiency is improved, and the high cost problem caused by the need to set a comparison pattern is avoided. In addition, by calculating the product of the movement speed of the steel wire rope 3 and the marking time of the identification part 23, the cross-sectional change part of the steel wire rope 3 to be detected can be obtained at the position of the steel wire rope 3, which is convenient for subsequent manual verification.It is worth noting that the number of detection components 2 in the circular inner space 11 is an even number, that is, two detection components 2 form a pair of detection groups, and the telescopic part 21 of one of the detection components 2 in the same detection group is locked, that is, the telescopic part movement of the telescopic part 21 is restricted by limit pins, block and other structures, forming a detection component 2 that cannot be telescoped, while the remaining other detection component 2 still maintains a telescopic state. During installation, the two detection components 2 in the same detection group are symmetrically arranged on both sides of the steel wire rope 3 to be detected, and the detection component 2 that cannot be telescoped serves as a reference abutment part, and the detection component 2 that still maintains a telescopic state is used as a detection trigger structure, thereby avoiding the problem of motion offset of the two detection components 2 in the same group when both are telescopic, thereby ensuring the accuracy and effectiveness of the detection results.

[0029] More specifically, the telescopic member 21 disposed between the roller 22 and the annular bracket 1 further includes a telescopic sleeve 211, a telescopic shaft 212, and a telescopic spring 213. One end of the telescopic sleeve 211 is fixed to the inner wall of the circular inner cavity 11 of the annular bracket 1, thereby achieving stable installation of the telescopic member 21 on the annular bracket 1. At the same time, the telescopic shaft 212 is slidably disposed within the telescopic sleeve 211, and one end of the telescopic shaft 212 extends toward the center of the circular inner cavity 11, allowing the telescopic shaft 212 to slide within the telescopic sleeve 211 along the radial direction of the circular inner cavity 11. In addition, the roller 22 is rotatably mounted on the end of the telescopic shaft 212 extending toward the center of the circular inner cavity 11, so that the roller 22 can contact the wire rope 3 to be tested. In addition, the telescopic spring 213 is arranged in the telescopic sleeve 211, and one end of the telescopic shaft 212 located in the telescopic sleeve 211 abuts against the telescopic spring 213, so that when the cross section of the wire rope 3 changes, the telescopic shaft 212 can float through the telescopic spring 213, and the structural design is more reasonable.

[0030] More specifically, a locking hole 2111 connected to the inner hole of the telescopic sleeve 211 is provided, and a limiting hole is provided at one end of the telescopic shaft 212 located in the telescopic sleeve 211. A pin is inserted into the locking hole 2111. That is, when it is necessary to limit the telescopic movement of the telescopic part 21, the limiting hole is aligned with the locking hole 2111, and the pin is inserted into the limiting hole and the locking hole 2111 at the same time, which makes it more convenient to lock the telescopic part 21 of the detection component 2 and is more convenient to use and operate.

[0031] More specifically, the cross-section of the telescopic shaft 212 is preferably a rectangular structure, and at the same time, the cross-section of the inner hole of the telescopic sleeve 211 is also rectangular, so that after the telescopic shaft 212 is slidably set in the telescopic sleeve 211, the telescopic shaft 212 will not rotate relative to the telescopic sleeve 211, thereby ensuring that the state of the roller 22 relative to the wire rope 3 to be tested can always be maintained, and there will be no problem of the roller 22 floating due to the tilt of the roller 22 itself, thereby ensuring the accuracy of the test result.

[0032] More specifically, the identification portion 23 of the detection assembly 2 further includes a connecting rod 231, a movable contact piece 232, a first static contact piece group 233, and a second static contact piece group 234. A relief cavity 2112 communicating with the inner hole of the telescopic sleeve 211 is defined. One end of the connecting rod 231 is connected to the portion of the telescopic shaft 212 corresponding to the relief cavity 2112, allowing the connecting rod 231 to move with the telescopic shaft 212, thereby changing the position of the connecting rod 231 within the relief cavity 2112. Furthermore, the movable contact piece 232 is mounted on the connecting rod 231, allowing the movable contact piece 232 to move with the telescopic shaft 212 within the relief cavity 2112. In addition, in the avoidance cavity 2112 and along the moving direction of the telescopic shaft 212, a first static contact piece group 233 and a second static contact piece group 234 are respectively provided on both sides of the dynamic contact piece 232, so that when the dynamic contact piece 232 moves following the telescopic shaft 212, the dynamic contact piece 232 can selectively contact the first static contact piece group 233 and the second static contact piece group 234. The dynamic contact piece 232 selects to contact the first static contact piece group 233 or the second static contact piece group 234 to trigger two recording circuits, thereby corresponding to the extension or retraction of the telescopic shaft 212, judging the reduction or increase of the cross-section of the detected wire rope 3, and determining that there is a broken wire problem at that location. It is worth noting that each of the first and second static contact groups 233 and 234 includes an insulating base plate and two static contacts, which are spaced apart and arranged on the corresponding insulating base plates. Furthermore, after the first and second static contact groups 233 and 234 are installed, the two static contacts on the same insulating base plate are located at opposite ends of the movable contact 232. This allows the movable contact 232 to connect the two static contacts on the same insulating base plate when it contacts the first or second static contact group 233 and 234, thereby energizing the recording circuit connected to the two static contacts and achieving recording. Furthermore, the recording circuit includes, but is not limited to, conventional commercially available pulse-emitting circuits. That is, once the circuit is energized, a pulse is emitted, achieving a recording.

[0033] Figure 3 for Figure 2 The cross-sectional view along line BB in the figure. Figure 2 and Figure 3As shown, the identification unit 23 is also provided with an adaption assembly 24. The adaption assembly 24 is disposed between the connecting rod 231 and the telescopic shaft 212. The adaption assembly 24 provides a flexible connection between the connecting rod 231 and the telescopic shaft 212. This prevents the connecting rod 231 from breaking from the telescopic shaft 212 when the telescopic shaft 212 slips beyond its range, while also ensuring that the movable contact piece 232 contacts the first static contact piece group 233 or the second static contact piece group 234, thereby preventing structural damage. The adaption assembly 24 includes a rotating shaft 241, a forward torsion spring 242, a reverse torsion spring 243, and a support seat 244. The support seats 244 are disposed on both sides of the portion of the telescopic shaft 212 located within the avoidance cavity 2112. The ends of the rotating shaft 241 are rotatably mounted on the two support seats 244, ensuring that the rotating shaft 241 is mounted on the telescopic shaft 212 and maintaining its rotation. At the same time, one end of the connecting rod 231 on which the movable contact piece 232 is installed is fixedly connected to the middle of the rotating shaft 241 and arranged along the radial direction of the rotating shaft 241, so that when the rotating shaft 241 rotates, the movable contact piece 232 can swing, thereby adapting to the position change of the rotating shaft 241. In addition, the torsion directions of the forward torsion spring 242 and the reverse torsion spring 243 are exactly opposite and are respectively arranged at the two ends of the rotating shaft 241, and one end of the forward torsion spring 242 and the reverse torsion spring 243 are respectively connected to the corresponding support seat 244, and the other end is connected to the rotating shaft 241, so that no matter how the rotating shaft 241 turns, there is a corresponding torsion spring to adapt to the rotation and reset after rotation. That is, when the cross-section of the steel wire rope 3 to be detected changes greatly, so that the movement of the telescopic shaft 212 exceeds the distance between the movable contact piece 232 and the first static contact piece group 233 or the second static contact piece group 234 in the initial state, the excessive displacement of the telescopic shaft 212 can be adapted by the deflection of the movable contact piece 232 and the rotation of the rotating shaft 241, avoiding structural damage while ensuring that the first static contact piece group 233 or the second static contact piece group 234 is conductive, and can simultaneously adapt to the movement of the telescopic shaft 212 in two directions, and the structural design is more reasonable.

[0034] Figure 4 A state diagram of a synchronous adjustment frame according to a preferred embodiment of the present invention; Figure 5 FIG. 1 is another state diagram of a synchronous adjustment frame according to a preferred embodiment of the present invention. Figure 1 、 Figure 4 and Figure 5As shown, a synchronous adjustment frame 25 is provided between the telescopic shaft 212 and the roller 22. The synchronous adjustment frame 25 includes a mounting plate 251, an adjustment seat 252, a mounting rod 253 and a locking block 254. The two ends of the adjustment seat 252 are respectively hinged with an adjustment seat 252, and a mounting rod 253 is provided on each adjustment seat 252 and on the side away from each other, thereby realizing an eccentric arrangement of the mounting rod 253 on each adjustment seat 252, and the roller 22 is installed between the two mounting rods 253, so that when the adjustment seat 252 rotates, the distance between the two mounting rods 253 on the two adjustment seats 252 can change, providing conditions for the subsequent installation of rollers 22 of different lengths. At this time, adjusting teeth are provided on the opposite sides of the two adjusting seats 252 and the adjusting teeth on the two adjusting seats 252 are engaged with each other, so that when one of the adjusting seats 252 rotates, the synchronous rotation of the other adjusting seat 252 can be achieved through the engaged adjusting teeth, ensuring the consistency of the rotation angles of the two adjusting seats 252, so that the heights of the ends of the two mounting rods 253 can be maintained consistent, providing conditions for maintaining the horizontal state of the roller 22 at all times in the future. In addition, a locking block 254 is removably installed on the mounting plate 251 and located next to an adjustment seat 252. The locking block 254 is also provided with a limiting tooth that engages with the adjusting tooth. That is, after the adjustment of the adjustment seat 252 is completed, the locking block 254 can be installed on the mounting plate 251, and the limiting tooth engages with the adjusting tooth to limit the adjustment seat 252 and prevent the adjustment seat 252 from rotating again, thereby ensuring the stability of the roller 22 during the detection process. When the adjustment seat 252 needs to be adjusted, the locking block 254 can be removed to realize the rotation of the adjustment seat 252, making the adjustment more convenient.

[0035] More specifically, the synchronous adjustment frame 25 also includes a sliding rod 255 and a sliding cylinder 256. At this time, one end of the sliding rod 255 is hinged to the end of a mounting rod 253 facing away from the adjustment seat 252, so that the sliding rod 255 can swing relative to the mounting rod 253. At the same time, a sliding cylinder 256 is hinged on the mounting rod 253 of the other adjustment seat 252, thereby realizing the swing of the sliding cylinder 256 on the mounting rod 253. In addition, the other end of the sliding rod 255 is slidably arranged in the sliding cylinder 256, so that the sliding rod 255 can slide along its own axial direction in the sliding cylinder 256, that is, when the adjusting seat 252 is rotated, the angle of the two mounting rods 253 changes, so that the sliding rod 255 can adapt to the change in the distance between the two mounting rods 253 by sliding itself in the sliding cylinder 256 when an angle deflection occurs. When it is necessary to replace the roller 22 of different lengths in the future, it is only necessary to replace the roller 22 on the sliding rod 255, and there is no need to replace other structures, which improves the utilization rate of the structure and avoids waste of resources. At the same time, it can also maintain the horizontal state of the roller 22 at all times, and better fit the wire rope 3 to be tested. It is worth noting that the pin that hinges the sliding rod 255 and the mounting rod 253 can be pulled out, that is, when the roller 22 needs to be replaced, one end of the sliding rod 255 can be removed from the mounting rod 253 by directly pulling out the pin, thereby facilitating the disassembly and assembly of the roller 22 and making the structural design more reasonable.

[0036] The wire rope broken wire detection device provided in this embodiment includes an annular bracket 1 and a plurality of detection components 2; by installing the plurality of detection components 2 in the circular inner cavity 11 of the annular bracket 1 in the form of an annular array, and each detection component 2 is connected to a roller 22 and an identification part 23 through a telescopic member 21, so that when the wire rope 3 to be detected passes through the center of the circular inner cavity 11, the roller 22 of each detection component 2 abuts against the outer side of the wire rope 3 to be detected, and when the cross-sectional size of the wire rope 3 to be detected changes due to wire breakage, it can be transmitted to the telescopic member 21 through the roller 22, and the identification part 23 is triggered by the movement of the telescopic member 21, and the identification part 23 identifies the extension or retraction movement of the telescopic member 21 to correspond to the internal or external wire breakage of the wire rope 3, so that the detection is more comprehensive and the data is more accurate. In addition, the detection directly acts on the wire rope 3 itself, and there is no need to set a reference pattern separately, which improves the detection efficiency and the accuracy of the detection results, and also reduces the detection cost.

[0037] The above are only preferred embodiments of the present invention and do not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A wire rope broken wire detection device, characterized in that: include: An annular bracket, wherein the annular bracket has a circular inner space; A plurality of detection components are distributed in the circular inner space of the annular bracket in an annular array, and each of the detection components extends toward the center of the circular inner space. Each of the detection components includes a telescopic member, a roller and an identification part. The telescopic member is arranged radially along the circular inner space, one end of the telescopic member is fixed on the inner wall of the circular inner space, and the other end of the telescopic member is rotatably mounted with the roller. The identification part is arranged on the telescopic member, and the extension or retraction of the telescopic member triggers the identification part. The number of the detection components in the circular inner space is even, and two of the detection components form a pair of detection groups. The telescopic member of one of the detection components in the same detection group is locked, and the remaining detection component still maintains a telescopic state.

2. The wire rope broken wire detection device according to claim 1, characterized in that: The telescopic member includes a telescopic sleeve, a telescopic shaft and a telescopic spring. One end of the telescopic sleeve is fixed to the inner wall of the circular inner cavity of the annular bracket. At the same time, the telescopic shaft is slidably arranged in the telescopic sleeve, and one end of the telescopic shaft extends toward the center of the circular inner cavity. The roller is rotatably installed on the end of the telescopic shaft extending toward the center of the circular inner cavity. The telescopic spring is arranged in the telescopic sleeve, and one end of the telescopic shaft located in the telescopic sleeve abuts against the telescopic spring.

3. The wire rope broken wire detection device according to claim 2, characterized in that: The telescopic sleeve is provided with a locking hole connected to the inner hole thereof, and one end of the telescopic shaft located in the telescopic sleeve is provided with a limiting hole, and a pin is inserted into the locking hole.

4. The wire rope broken wire detection device according to claim 2, characterized in that: The cross section of the telescopic shaft is rectangular, and the cross section of the inner hole of the telescopic sleeve is also rectangular.

5. The wire rope broken wire detection device according to claim 2, characterized in that: The identification part includes a connecting rod, a movable contact piece, a first static contact piece group and a second static contact piece group. A avoidance cavity connected to the inner hole of the telescopic sleeve is opened. One end of the connecting rod is connected to the part of the telescopic shaft corresponding to the avoidance cavity. The movable contact piece is installed on the connecting rod. In addition, the first static contact piece group and the second static contact piece group are respectively arranged on both sides of the movable contact piece in the avoidance cavity and along the moving direction of the telescopic shaft.

6. The wire rope broken wire detection device according to claim 5, characterized in that: It also includes an adaptation component, which is arranged between the connecting rod and the telescopic shaft. The adaptation component includes a rotating shaft, a forward torsion spring, a reverse torsion spring and a support seat. Support seats are provided on both sides of the telescopic shaft and the part located in the avoidance cavity. The two ends of the rotating shaft are respectively rotatably mounted on the two support seats. One end of the connecting rod is fixedly connected to the middle part of the rotating shaft and is arranged along the radial direction of the rotating shaft. The torsion directions of the forward torsion spring and the reverse torsion spring are exactly opposite and are respectively sleeved on the two ends of the rotating shaft. One end of the forward torsion spring and the reverse torsion spring are respectively connected to the corresponding support seats, and the other ends are both connected to the rotating shaft.

7. The wire rope broken wire detection device according to claim 2, characterized in that: A synchronous adjustment frame is provided between the telescopic shaft and the roller, and the synchronous adjustment frame includes a mounting plate, an adjusting seat, a mounting rod and a locking block. The mounting plate is installed on the telescopic shaft and is hinged to the adjusting seat at both ends. The mounting rod is provided on each of the adjusting seats and on the side facing away from each other. The roller is installed between the two mounting rods, and adjusting teeth are provided on the opposite sides of the two adjusting seats and the adjusting teeth on the two adjusting seats are engaged with each other. A locking block is removably installed on the mounting plate and located next to one of the adjusting seats. The locking block is also provided with a limiting tooth engaged with the adjusting teeth.

8. The wire rope broken wire detection device according to claim 7, characterized in that: It also includes a sliding rod and a sliding cylinder, one end of the sliding rod is hinged to one end of the mounting rod away from the adjustment seat, and the sliding cylinder is hinged on the mounting rod of the other adjustment seat, and the other end of the sliding rod is slidably set in the sliding cylinder.

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