Comprehensive detection device for abrasion and strand breakage of steel wire rope
Through the combination of strain weighing substrate and detection mechanism, the rope head balances the lever and detector, the problems of high cost and low accuracy in elevator wire detection are solved, and low-cost, high-precision wear and strand break detection effects are achieved.
Patent Information
- Application Number
- CN202411195407.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-01-03
AI Technical Summary
The existing elevator wire detection methods are costly, have low measurement accuracy, and cannot effectively detect internal defects. They are greatly affected by surface attachments, making it difficult to achieve efficient wear and strand breaking detection.
Using strain weighing substrate and detection mechanism, the rope head balances the lever, rotating sleeve, upper and lower movable rods and detectors, combined with electronic measurement and mechanical structure, the wear and breaking of the wire rope is realized, and the strain gauge is used to detect the stress deformation to detect the wire rope. wear and breakage.
Low-cost and high-precision wire rope wear and strand break detection is achieved, avoiding the problems of high equipment costs and low measurement accuracy of the prior art, and excellent measurement results.
Smart Images
Figure CN119240478A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of elevator steel wire defect detection, and in particular to a comprehensive detection device for worn and broken steel wire ropes. Background Art
[0002] Elevator steel wire is the main load-bearing component that pulls the elevator cabinet to move. Its quality is related to the safety of elevator operation. During long-term use, elevator steel wire may have defects such as wear, broken strands, loose strands, and corrosion. These defects cause the load-bearing performance of elevator steel wire to decrease. Therefore, it is necessary to regularly inspect the elevator steel wire to avoid safety accidents caused by elevator steel wire defects.
[0003] Existing elevator steel wire detection methods include optical detection method, X-ray detection method, magnetostrictive detection method and vibration detection method. The optical detection method uses optical imaging equipment to take pictures of the elevator steel wire and judge whether the elevator steel wire has defects based on the image. This detection method requires high equipment cost, is affected by the lubricating oil on the surface of the elevator steel wire, and cannot detect defects inside the elevator steel wire; the X-ray detection method uses X-ray imaging devices in mutually perpendicular directions to image the elevator steel wire to judge whether the elevator steel wire has defects. This detection method has high power requirements and high equipment costs, poor measurement continuity, and certain risks; the magnetostrictive detection method uses the magnetostrictive effect to detect magnetic field changes based on displacement changes, but the measurement resolution is low and the measurement effect is poor; the vibration detection method uses the excitation of elevator steel wire vibration to detect abnormal vibration waveforms of the elevator steel wire to judge whether the elevator steel wire has defects. It is greatly affected by the structure connected to the elevator steel wire and has low measurement accuracy. Regardless of the detection method, the surface attachments of the elevator steel wire have a great impact on the defect measurement. Summary of the invention
[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a comprehensive detection device for worn and broken wire ropes.
[0005] The technical solution of the present invention is as follows:
[0006] A comprehensive detection device for wire rope wear and broken strands, comprising a strain weighing substrate, a first detection mechanism and a second detection mechanism, wherein a connecting block is convexly provided on the A side of the strain weighing substrate, and a first rotating shaft and a second rotating shaft are provided at the left and right ends of the protruding part of the connecting block, the first detection mechanism comprises a first rope head balancing lever, a first rotating sleeve, a first upper rope head movable rod, a first lower rope head movable rod, a first detector and a first fixed frame, the middle part of the first rope head balancing lever is rotatably arranged on the first rotating shaft through the first rotating sleeve, the first detector is arranged on the first rope head balancing lever at a position corresponding to the first rotating sleeve through the first fixed frame, the first upper rope head movable rod and the first lower rope head movable rod are rotatably arranged on one side of the first rope head balancing lever, the first upper rope head movable rod is provided with a wire rope passing through an inlet, and the first lower rope head movable rod is provided with a wire rope passing through an outlet, the second detection mechanism comprises a second rope head balancing lever, a second rotating sleeve, a second upper rope head movable rod, a second lower rope head movable rod, a second detector and a second fixed frame, the middle part of the second rope head balancing lever is rotatably arranged on the second rotating sleeve through the second rotating sleeve The second detector is arranged on the second rope balance lever at a position corresponding to the second rotating sleeve through the second fixing frame. The second upper rope head movable rod and the second lower rope head movable rod are arranged on one side of the second rope head balance lever for vertical rotation. The second upper rope head movable rod is provided with a wire rope passing inlet, and the second lower rope head movable rod is provided with a wire rope passing outlet. The left end of the A side of the strain weighing substrate is provided with a first stopper and a second stopper corresponding to the upper and lower ends of the first rope head balance lever, and the right end of the A side of the strain weighing substrate is provided with a first stopper and a second stopper corresponding to the upper and lower ends of the first rope head balance lever. The upper and lower ends of the lever correspond to the third block and the fourth block, the A side of the strain weighing substrate is also provided with a trapezoidal strain slot, the connecting block is provided on the trapezoidal strain slot and its protrusion extends outward from the upper bottom of the trapezoidal strain slot, the upper end connecting block of the lower bottom of the trapezoidal strain slot is integrally connected with the strain weighing substrate, the lower end connecting block of the lower bottom of the trapezoidal strain slot is connected to the strain weighing substrate through a connecting mechanism, the lower bottom of the trapezoidal strain slot is provided with a first strain gauge and a second strain gauge, and the first strain gauge and the second strain gauge are located on the connecting block.
[0007] Furthermore, the first detector includes a first PCB shell, a first PCB cover, a first PCB board, a first detection head, a first magnet and a second magnet. The first PCB cover is arranged on the first PCB shell to form a first internal detection chamber. The first PCB board, the first detection head, the first magnet and the second magnet are all arranged in the first internal detection chamber. The first detection head is connected to the first PCB board, and the first magnet and the second magnet are located at the upper and lower ends of the first detection head.
[0008] Furthermore, the second detector includes a second PCB shell, a second PCB cover, a second PCB board, a second detection head, a third magnet and a fourth magnet. The second PCB cover is arranged on the second PCB shell to form a second internal detection chamber. The second PCB board, the second detection head, the third magnet and the fourth magnet are all arranged in the second internal detection chamber. The second detection head is connected to the second PCB board, and the third magnet and the fourth magnet are located at the upper and lower ends of the second detection head.
[0009] Furthermore, the connecting mechanism includes a connecting fixing plate, a first connecting shaft, a second connecting shaft, a connecting pressure plate, a first connecting pressure sleeve and a second connecting pressure sleeve. The first connecting shaft and the second connecting shaft are relatively arranged on the connecting fixing plate and are integrally formed with the connecting fixing plate. The first connecting shaft is passed through the connecting block, and the second connecting shaft is passed through the strain weighing substrate. The connecting pressure plate is installed at the ends of the first connecting shaft and the second connecting shaft and is fixed by the first connecting pressure sleeve and the second connecting pressure sleeve respectively.
[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention realizes the detection of wire rope wear and wire rope broken strands based on the method of electronic measurement plus mechanical means, and the first detection mechanism and the second detection mechanism are rotatably arranged at the left and right ends of the strain weighing substrate A side, and the first detection mechanism and the second detection mechanism both include a rope head balance lever, a rotating sleeve, an upper rope head movable rod, a lower rope head movable rod and a detector, the middle part of the rope head balance lever is rotatably arranged on the rotating shaft on one side of the strain weighing substrate through the rotating sleeve, the detector is arranged at the position of the rope head balance lever corresponding to the rotating sleeve, and the upper rope head movable rod is rotatably arranged on the rotating shaft on one side of the strain weighing substrate The upper movable rod and the lower rope head movable rod are rotated up and down and are set on one side of the rope head balance lever. The wire rope passes through the wire rope passing port of the upper rope head movable rod, passes through the middle of the rope head balance lever, and then passes out from the wire rope passing port of the lower rope head movable rod. When the wire rope is worn, the detector can detect it in time. When the wire rope is broken, the rope head balance lever will lose balance and hit the upper block or lower block on the A side of the strain weighing substrate. At this time, the trapezoidal strain slot on the A side of the strain weighing substrate will produce stress deformation. When the first strain gauge and the second strain gauge sense stress, it means that the strand is broken. This method can detect the wear and broken strands of the wire rope, and its cost is low, the measurement effect is good, and the measurement accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0012] Figure 1A schematic diagram of the structure of a comprehensive detection device for wire rope wear and broken strands provided by the present invention Figure 1 ;
[0013] Figure 2 A schematic diagram of the structure of a comprehensive detection device for wire rope wear and broken strands provided by the present invention Figure 2 ;
[0014] Figure 3 The structure of the strain weighing substrate of the present invention is shown in FIG. Figure 1 ;
[0015] Figure 4 The structure of the strain weighing substrate of the present invention is shown in FIG. Figure 2 ;
[0016] Figure 5 The structure diagram of the first detection mechanism of the present invention is shown in FIG. Figure 1 ;
[0017] Figure 6 The structure diagram of the first detection mechanism of the present invention is shown in FIG. Figure 2 ;
[0018] Figure 7 The structure of the second detection mechanism of the present invention is shown in FIG. Figure 1 ;
[0019] Figure 8 The structure of the second detection mechanism of the present invention is shown in FIG. Figure 2 . DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0021] In order to illustrate the technical solution of the present invention, a specific embodiment is provided below for illustration.
[0022] Example
[0023] See also Figures 1 to 8The present embodiment provides a comprehensive detection device for worn and broken wire ropes, including a strain weighing substrate 1, a first detection mechanism 2, and a second detection mechanism 3. A connection block 11 is convexly provided on the A side of the strain weighing substrate 1, and a first rotating shaft 12 and a second rotating shaft 13 are provided at the left and right ends of the protruding part of the connection block 11; the first detection mechanism 2 includes a first rope end balance lever 21, a first rotating sleeve, a first upper rope end movable rod 22, a first lower rope end movable rod 23, a first detector 24, and a first fixed frame 25. The middle part of the first rope end balance lever 21 is rotatably arranged on the first rotating shaft 12 through the first rotating sleeve, and the first detector 24 is arranged on the first rope end balance lever 21 at a position corresponding to the first rotating sleeve through the first fixed frame 25. The first detector 24 includes a first PCB shell 241, a first PCB cover 242, a first PCB board 243, a first detection head 244 , a first magnet 245 and a second magnet 246, a first PCB cover 242 is covered on the first PCB shell 241 to form a first internal detection chamber 247, a first PCB board 243, a first detection head 244, a first magnet 245, and a second magnet 246 are all arranged in the first internal detection chamber 247, the first detection head 244 is connected to the first PCB board 243, the first magnet 245 and the second magnet 246 are located at the upper and lower ends of the first detection head 244, a first upper rope head movable rod 22 and a first lower rope head movable rod 23 are rotatably arranged on one side of the first rope head balance lever 21, the first upper rope head movable rod 22 is provided with a wire rope passing inlet, and the first lower rope head movable rod 23 is provided with a wire rope passing outlet;The second detection mechanism 3 includes a second rope end balance lever 31, a second rotating sleeve, a second upper rope end movable rod 32, a second lower rope end movable rod 33, a second detector 34 and a second fixed frame 35. The middle part of the second rope end balance lever 31 is rotatably arranged on the second rotating shaft 13 through the second rotating sleeve. The second detector 34 is arranged on the second rope end balance lever 31 at a position corresponding to the second rotating sleeve through the second fixed frame 35. The second detector 34 includes a second PCB shell 341, a second PCB cover 342, a second PCB board 343, a second detection head 344, a third magnet 345 and a fourth magnet 346. The second PCB cover 342 is arranged on the second PCB board 343. A second internal detection chamber 347 is formed on the CB shell 341, and a second PCB board 343, a second detection head 344, a third magnet 345, and a fourth magnet 346 are all arranged in the second internal detection chamber 347. The second detection head 344 is connected to the second PCB board 343, and the third magnet 345 and the fourth magnet 346 are located at the upper and lower ends of the second detection head 344. The second upper rope head movable rod 32 and the second lower rope head movable rod 33 are rotatably arranged on one side of the second rope head balance lever 31, and the second upper rope head movable rod 32 is provided with a wire rope through-inlet, and the second lower rope head movable rod 33 is provided with a wire rope through-outlet. The left end of the A side of the strain weighing substrate 1 is moved up and down. A first stopper 14 and a second stopper 15 are provided corresponding to the upper and lower ends of the first rope head balance lever 21. A third stopper 16 and a fourth stopper 17 corresponding to the upper and lower ends of the second rope head balance lever 31 are provided on the right end of the A side of the strain weighing substrate 1. A trapezoidal strain slot 18 is also provided on the A side of the strain weighing substrate 1. A connecting block 11 is provided on the trapezoidal strain slot 18 and its protruding portion extends outward from the upper bottom of the trapezoidal strain slot 18. The upper end connecting block 11 of the lower bottom of the trapezoidal strain slot 18 is integrally connected to the strain weighing substrate 1. The lower end connecting block 11 of the lower bottom of the trapezoidal strain slot 18 is connected to the strain weighing substrate 1 through a connecting mechanism 4. The connecting mechanism 4 includes a connecting plate 41, a first connecting shaft, a second connecting shaft, a connecting pressure plate 42, a first connecting sleeve 43 and a second connecting sleeve 44. The first connecting shaft and the second connecting shaft are arranged on the connecting plate 41 relatively and are formed as one piece with the connecting plate 41. The first connecting shaft is passed through the connecting block 11, and the second connecting shaft is passed through the strain weighing substrate 1. The connecting pressure plate 42 is mounted on the ends of the first connecting shaft and the second connecting shaft and is fixed by the first connecting sleeve 43 and the second connecting sleeve 44 respectively. The lower bottom of the trapezoidal strain slot 18 is provided with a first strain gauge 5 and a second strain gauge 6 above and below. The first strain gauge 5 and the second strain gauge 6 are located on the connecting block 11. ;
[0024] The comprehensive detection device for wire rope wear and broken strands can detect the wear and broken strands of the wire rope. During implementation, the wire rope is inserted from the wire rope insertion port of the upper rope head movable rod, passes through the middle of the rope head balance lever and then exits from the wire rope insertion port of the lower rope head movable rod. When the wire rope is worn, the detector can detect it in time. When the wire rope is broken, the rope head balance lever will lose balance and hit the upper block or the lower block on the A side of the strain weighing substrate. At this time, the trapezoidal strain slot on the A side of the strain weighing substrate will produce stress deformation. When the first strain gauge and the second strain gauge sense stress, it means that the strand is broken.
[0025] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A comprehensive detection device for worn and broken wire ropes, characterized in that: The invention comprises a strain weighing substrate, a first detection mechanism and a second detection mechanism, wherein a connecting block is convexly provided on the A side of the strain weighing substrate, and a first rotating shaft and a second rotating shaft are provided at the left and right ends of the protruding part of the connecting block, the first detection mechanism comprises a first rope head balancing lever, a first rotating sleeve, a first upper rope head movable rod, a first lower rope head movable rod, a first detector and a first fixed frame, the middle part of the first rope head balancing lever is rotatably arranged on the first rotating shaft through the first rotating sleeve, the first detector is arranged on the first rope head balancing lever corresponding to the position of the first rotating sleeve through the first fixed frame, the first upper rope head movable rod and the first lower rope head movable rod are rotatably arranged on one side of the first rope head balancing lever, the first upper rope head movable rod is provided with a wire rope passing through an inlet, and the first lower rope head movable rod is provided with a wire rope passing through an outlet, the second detection mechanism comprises a second rope head balancing lever, a second rotating sleeve, a second upper rope head movable rod, a second lower rope head movable rod, a second detector and a second fixed frame, the middle part of the second rope head balancing lever is rotatably arranged on the second rotating shaft through the second rotating sleeve, and the second detector The detector is arranged on the second rope head balance lever at a position corresponding to the second rotating sleeve through the second fixing frame, the second upper rope head movable rod and the second lower rope head movable rod are arranged on one side of the second rope head balance lever for vertical rotation, the second upper rope head movable rod is provided with a wire rope passing inlet, the second lower rope head movable rod is provided with a wire rope passing outlet, the left end of the A side of the strain weighing substrate is provided with a first stopper and a second stopper corresponding to the upper and lower ends of the first rope head balance lever, the right end of the A side of the strain weighing substrate is provided with an upper stopper corresponding to the upper and lower ends of the second rope head balance lever The third stopper and the fourth stopper correspond to the lower two ends, the A side of the strain weighing substrate is also provided with a trapezoidal strain slot, the connecting block is arranged on the trapezoidal strain slot and its protrusion extends outward from the upper bottom of the trapezoidal strain slot, the upper end connecting block of the lower bottom of the trapezoidal strain slot is integrally connected with the strain weighing substrate, the lower end connecting block of the lower bottom of the trapezoidal strain slot is connected to the strain weighing substrate through a connecting mechanism, the first strain gauge and the second strain gauge are arranged on the upper and lower parts of the lower bottom of the trapezoidal strain slot, and the first strain gauge and the second strain gauge are located on the connecting block.
2. A comprehensive detection device for wire rope wear and broken strands according to claim 1, characterized in that: The first detector includes a first PCB shell, a first PCB cover, a first PCB board, a first detection head, a first magnet and a second magnet. The first PCB cover is arranged on the first PCB shell to form a first internal detection chamber. The first PCB board, the first detection head, the first magnet and the second magnet are all arranged in the first internal detection chamber. The first detection head is connected to the first PCB board, and the first magnet and the second magnet are located at the upper and lower ends of the first detection head.
3. A comprehensive detection device for wire rope wear and broken strands according to claim 1, characterized in that: The second detector includes a second PCB shell, a second PCB cover, a second PCB board, a second detection head, a third magnet and a fourth magnet. The second PCB cover is arranged on the second PCB shell to form a second internal detection chamber. The second PCB board, the second detection head, the third magnet and the fourth magnet are all arranged in the second internal detection chamber. The second detection head is connected to the second PCB board. The third magnet and the fourth magnet are located at the upper and lower ends of the second detection head.
4. A comprehensive detection device for wire rope wear and broken strands according to claim 1, characterized in that: The connecting mechanism includes a connecting fixing plate, a first connecting shaft, a second connecting shaft, a connecting pressure plate, a first connecting pressing sleeve and a second connecting pressing sleeve. The first connecting shaft and the second connecting shaft are relatively arranged on the connecting fixing plate and are integrally formed with the connecting fixing plate. The first connecting shaft is passed through the connecting block, and the second connecting shaft is passed through the strain weighing substrate. The connecting pressure plate is installed at the ends of the first connecting shaft and the second connecting shaft and is fixed by the first connecting pressing sleeve and the second connecting pressing sleeve respectively.