A self-powered non-destructive intelligent detection device for guide ropes of shafts

Abstract

The present invention relates to the technical field of non-destructive testing of wire ropes, and specifically to a self-powered non-destructive intelligent testing device for guide ropes of cages, which includes a testing mechanism arranged on the cage and a self-power generation mechanism for supplying power to the testing mechanism. The testing mechanism includes an excitation element and a sensor element that are spaced and sleeved outside the guide rope of the cage. The self-power generation mechanism includes a base slidably arranged on the cage and a generator arranged on the base. The input shaft of the generator is connected with a friction wheel that frictionally rolls in cooperation with the guide rope of the cage. A pre-tightening spring for pushing the base towards the direction of the guide rope and a magnetorheological elastomer element for pushing the base towards the direction opposite to the guide rope are arranged on the cage. The magnetorheological elastomer element, the excitation element, and the sensor element are all directly powered by the generator. The present invention can stably supply power to the guide rope of the cage without adding a battery pack and without prolonging the charging and replacing time, which affects the normal production operation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of steel wire rope inspection for cage guides, and specifically relates to a self-powered non-destructive intelligent inspection device for cage guide steel wire ropes. Background Art

[0002] A steel wire rope cage guide uses a steel wire rope as the cage guide for the operation of the hoisting container. The two ends of the cage guide steel wire rope are fixed and tightened with special devices at the top and bottom of the shaft, and no additional cage guide beams need to be installed in the shaft. Its main function is to ensure that the cage conducts transportation operations along the cage guide in the shaft, enabling the cage to bear a relatively large weight and maintain stable movement. In addition, the cage guide rope can also prevent blockage of materials in the cage guide and prevent wear of the cage guide. Therefore, the good safety state of the cage guide steel wire rope is the guarantee for safe production operations in mines.

[0003] In actual projects, due to factors such as the depth of the mine shaft and the reciprocating operation of the cage, it is impossible to use a ground power supply system to supply power to the electrical equipment of the cage. Therefore, the cage usually realizes its own power supply through a configured battery pack. In non-destructive inspections such as magnetic induction of the cage guide steel wire rope, the power supply demand increases. If power supply redundancy is achieved by using wired methods or adding battery packs, it will not only increase the cost of shaft infrastructure construction, but also increase the time for charging and replacing the battery pack, affecting the normal production operation efficiency, and is more unfavorable for the maintenance and upkeep of the equipment during the later use of the cage. Summary of the Invention

[0004] The present invention aims to provide a self-powered non-destructive intelligent inspection device for cage guide steel wire ropes, which can stably supply power to the cage guide steel wire ropes without adding a battery pack and without prolonging the charging and replacing time, thus affecting the normal production operation efficiency.

[0005] To solve the above technical problems, the specific solution adopted by the present invention is as follows: A self-powered non-destructive intelligent inspection device for cage guide steel wire ropes includes an inspection mechanism arranged on the cage and a self-powered mechanism for supplying power to the inspection mechanism. The inspection mechanism includes an excitation element and a sensor element that are spaced apart and sleeved outside the cage guide steel wire rope of the cage. The self-powered mechanism includes a base slidably arranged on the cage and a generator arranged on the base. The input shaft of the generator is connected with a friction wheel that frictionally rolls in cooperation with the cage guide steel wire rope. On the cage, there is a pre-tightening spring for pushing the base towards the cage guide steel wire rope direction and a magnetorheological elastomer element for pushing the base towards the direction opposite to the cage guide steel wire rope direction. The magnetorheological elastomer element, the excitation element, and the sensor element are all directly powered by the generator.

[0006] Preferably, a sliding table is arranged on the cage, a sliding column is fixedly arranged on the sliding table, and a sliding block that slidably cooperates with the sliding column is arranged on the base.

[0007] Preferably, the pre-tightening spring is sleeved on the sliding column.

[0008] Preferably, the magnetorheological elastomer element includes a cylindrical housing. A magnetorheological elastomer is provided in the inner cavity of the housing. An electromagnetic coil is wound around the outer periphery of the magnetorheological elastomer. The electromagnetic coil is electrically connected to a generator. Plug posts are respectively provided at both ends of the magnetorheological elastomer in the housing. The plug posts are slidably engaged with the housing. One of the plug posts is fixed to the base, and the other plug post is fixed to the sliding table.

[0009] Preferably, the housing is made of a magnetic insulation material.

[0010] Preferably, the magnetorheological elastomer includes a cylindrical silicone rubber matrix and magnetic particles dispersed in the silicone rubber matrix.

[0011] Preferably, the axle of the friction wheel is rotatably arranged on a Y-shaped frame. The handle part of the Y-shaped frame is fixed to the base by bolts.

[0012] Preferably, a through hole for the bolt to penetrate is formed in the handle part of the Y-shaped frame, and the through hole is a strip-shaped hole.

[0013] In the present invention, the electromagnetic induction method is adopted for non-destructive detection of the guide rope of the shaft. Its principle structure is simple, the function is reliable, there is no radiation to personnel, the detection result accuracy rate is high, misjudgment is reduced, and the detection efficiency is improved. The power supply of the detection mechanism comes from a generator provided with a friction wheel. The generator is driven to generate electric energy by the way of friction and rolling of the friction wheel and the guide rope of the shaft. Thus, without additionally increasing the power supply line and the battery pack and prolonging the charging and replacing time, the production operation efficiency is guaranteed.

[0014] Because there may be water stains and oil stains on the guide rope of the shaft, it is easy to cause the friction wheel to slip, resulting in insufficient power obtained by the generator, further reducing the power generation efficiency and affecting the detection. In order to reduce the occurrence of slipping between the guide rope of the shaft and the friction wheel, it is usually necessary to apply a large pushing pressure to the friction wheel to increase the pressure between the friction wheel and the guide rope of the shaft. However, the long-term rolling friction cooperation under high contact pressure will inevitably cause wear of the guide rope of the shaft and the friction hole. As an important load-bearing component, surface wear of the guide rope of the shaft may reduce its strength and service life, increasing safety risks; after the friction wheel is worn, it will affect its contact effect with the steel wire rope, further slip and reduce the transmission efficiency, affecting the stable power generation of the generator. As the wear intensifies, it is necessary to frequently replace the friction wheel and the guide rope of the shaft, which will increase the maintenance cost and downtime.

[0015] In order to solve the above technical problems, the present invention cooperates with the preload spring and the magnetorheological elastic element, the thrusts of the preload spring and the magnetorheological elastic element conflict with each other, and the electromagnetic coil of the magnetorheological elastic element is directly connected to the generator. This allows the present invention to increase the pressure between the tankway steel wire rope and the friction wheel to reduce slippage only when the friction coefficient is reduced due to water pollution, oil pollution and other factors, thereby maintaining normal power generation efficiency and detection efficiency. And when the surface of the pipeline steel wire rope is normal, a smaller pressure is maintained between the tankway steel wire rope and the friction wheel, which reduces the wear of the two.

[0016] The above adjustment process is an adaptive adjustment based on the change of friction coefficient caused by the contamination of the surface of the tankway steel wire rope, without the need for additional detection, judgment, execution and other related process and related elements. And the response time of the magnetorheological elastic element to the magnetic field generated by the change of current is in milliseconds, so that the present invention can quickly adapt and respond, ensure the power supply of the detection mechanism and effectively reduce the damage of the friction wheel and the tankway steel wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 for Figure 1 Schematic diagram of the local enlarged structure of part A.

[0019] Figure 3 It is a schematic diagram of the top view of the self-generating mechanism of the present invention.

[0020] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA axis.

[0021] Figure 5 It is a schematic structural diagram of the detection mechanism part of the present invention.

[0022] Markings in the figure: 1. Self-generating mechanism, 101. Friction wheel, 102. Slide, 103. Base, 104. Generator, 105. Synchronous belt, 106. Slide column, 107. Preload spring, 108. Y-shaped frame, 109. Bolt, 110. Perforation, 111. Slider, 112. Fixed block, 113. Sliding block, 2. Tankway wire rope, 3. Detection mechanism, 301. Excitation element, 302. Sensor element, 303. Tripod, 304. U-shaped frame, 4. Tank cage, 5. Magnetorheological elastic element, 501. Top column, 502. Electromagnetic coil, 503. Magnetorheological elastomer, 504. Shell. DETAILED DESCRIPTION

[0023] like Figure 1As shown, a self-generating non-destructive intelligent detection device for a tankway steel wire rope 2 of the present invention comprises a detection mechanism 3 arranged on the top of a tank cage 4 and a self-generating mechanism 1 for supplying power to the detection mechanism 3. There are four detection mechanisms 3, which correspond to the four tankway steel wire ropes 2 at the four corner positions of the tank cage 4 and are used to detect the tankway steel wire ropes 2 at the corresponding positions. There is one self-generating mechanism 1, which is arranged at the top of the tankway steel wire rope 2 and cooperates with the tankway steel wire rope 2 at the position to generate electricity, so as to function four detection mechanisms 3.

[0024] Combination Figure 2 and Figure 5 As shown, the detection mechanism 3 includes an inverted U-shaped frame 304 fixed on the top of the tank cage 4. The bottom space of one of the U-shaped frames 304 is used for the installation of the power generation mechanism 1. A tripod 303 is fixed on the top of all the U-shaped frames 304. The tripod 303 is vertically distributed and fixed with a channel steel toward one side of the tankway steel wire rope 2. The upper end of the channel steel is fixed with an excitation element 301, and the lower end is fixed with a sensor element 302. The excitation element 301 and the sensor element 302 are both cylindrical and are passed through by the tankway steel wire rope 2. The above method of utilizing the magnetic properties of ferromagnetic materials, magnetizing the tankway steel wire rope 2 by excitation, and then using the sensor element 302 to detect the change in the magnetic field to determine whether the steel wire rope is damaged is a conventional technical means in non-destructive testing of steel wire ropes, which will not be described in detail here.

[0025] Combination Figure 2 , 3 As shown in Figures 4 and 5, the self-generating mechanism 1 includes a slide 102 fixed on the top of the cage 4 and a base 103 slidably arranged on the slide 102. Two parallel and spaced slide posts 106 are fixedly arranged on the slide 102, and two sliders 111 are fixedly arranged at the bottom of the base 103. The two sliders 111 are respectively provided with slide holes that movably cooperate with the slide posts 106, so that the base 103 can slide in the direction toward or away from the corresponding position of the tankway wire rope 2 under the action of external force.

[0026] A friction wheel 101 and a generator 104 are provided on the top of the base 103. The output shaft of the generator 104 is connected to the axle of the friction wheel 101 through a synchronous belt 105 and a pulley. The friction wheel 101 can be matched with the tankway steel wire rope 2 by rolling friction, so that when the tank cage 4 moves up and down along the tankway steel wire rope 2, the friction wheel 101 is driven by friction force to rotate, and the generator 104 generates electrical energy. The excitation element 301, the sensor element 302 and other related devices in the above-mentioned detection mechanism 3 are directly connected to the output of the generator 104, and the detection is completed by using the electrical energy generated by the generator 104.

[0027] In order to maintain a certain pressure to prevent slipping and avoid excessive pressure causing wear when there is water stain or oil stain at the positioning position of the friction wheel 101 and the guide rope 2 on the guide rope 2, resulting in a decrease in friction, the present invention provides the following structure.

[0028] First, a pre-tightening spring 107 is sleeved on the sliding column 106 at a position between the side of the base 103 opposite to the friction wheel 101 and the sliding table 102. The pre-tightening spring 107 is in a compressed state and is used to push the base 103 towards the direction of the guide rope 2. Secondly, as Figure 4 shown, a magnetorheological elastomer element 5 is provided on the base 103. The magnetorheological elastomer element 5 includes a cylindrical housing 504. A magnetorheological elastomer 503 is provided in the inner cavity of the housing 504. Top columns 501 are respectively provided at both ends of the magnetorheological elastomer 503. One of the top columns 501 is fixedly connected to a sliding block 113 fixed to the bottom of the base 103, and the other top column 501 is fixedly connected to a fixed block 112 fixed to the sliding table 102. Both top columns 501 can slide along the longitudinal direction of the housing 504. An electromagnetic coil 502 is sleeved on the outer periphery of the magnetorheological elastomer 503. The electromagnetic coil 502 is directly powered by the generator 104. When the current generated by the generator 104 is relatively large, the magnetic field of the electromagnetic coil 502 is relatively strong, making the magnetorheological elastomer 503 have a relatively high stiffness. When the current generated by the generator 104 is relatively small, the stiffness of the magnetorheological elastomer 503 is relatively small.

[0029] Through the cooperation of the above pre-tightening spring 107 and the magnetorheological elastomer element 5, in the normal rolling friction state between the friction wheel 101 and the guide rope 2, the generator 104 generates a relatively large current, making the magnetorheological elastomer element 5 have a relatively large stiffness to resist the thrust of the pre-tightening spring 107 and avoid the pre-tightening spring 107 applying an excessive thrust between the guide rope 2 and the friction wheel 101. Once slipping occurs between the friction wheel 101 and the guide rope 2, the stiffness of the magnetorheological elastomer element 5 will instantaneously decrease correspondingly due to the decrease in the current generated by the generator 104, and the pre-tightening spring 107 will correspondingly apply a greater thrust to the friction wheel 101 to reduce the occurrence of slipping.

[0030] In this embodiment, the housing 504 is made of a magnetic insulation material to avoid magnetic leakage. The magnetorheological elastomer 503 includes a cylindrical silicone rubber matrix such as silicone rubber, polyurethane, etc., and magnetic particles such as carbonyl iron particles dispersed in the silicone rubber matrix. When there is no external magnetic field, the magnetic particles are randomly distributed; after applying a magnetic field, the magnetic particles will arrange along the magnetic field direction, forming a chain-like or columnar structure, thereby changing the mechanical properties of the material.

[0031] In addition, the axle of the friction wheel 101 is rotatably arranged on a Y-shaped frame 108, and the handle part of the Y-shaped frame 108 is fixed to the base 103 through a bolt 109. A strip-shaped perforation 110 for the bolt 109 to penetrate through is formed on the handle part of the Y-shaped frame 108, so that the position of the Y-shaped frame 108 can be adjusted after loosening the bolt 109 to achieve fine adjustment of the position of the friction wheel 101.

Claims

1. A self-powered non-destructive intelligent detection device for cage ropes, characterized in that: It includes a detection mechanism (3) provided on a cage (4) and a self-power generation mechanism (1) for supplying power to the detection mechanism (3). The detection mechanism (3) includes an excitation element (301) and a sensor element (302) spacedly sleeved outside the cage wire rope (2) of the cage (4). The self-power generation mechanism (1) includes a base (103) slidably provided on the cage (4) and a generator (104) provided on the base (103). The input shaft of the generator (104) is connected with a friction wheel (101) that frictionally rolls in cooperation with the cage wire rope (2). A pre-tightening spring (107) for pushing the base (103) towards the cage wire rope (2) and a magnetorheological elastomer element (5) for pushing the base (103) towards the direction opposite to the cage wire rope (2) are provided on the cage (4). The magnetorheological elastomer element (5), the excitation element (301), and the sensor element (302) are all directly powered by the generator (104).

2. The self-powered non-destructive intelligent detection device for cage guide wire ropes according to claim 1, wherein: A slide table (102) is provided on the cage (4), and a slide post (106) is fixedly provided on the slide table (102). A slider (111) slidably cooperating with the slide post (106) is provided on the base (103).

3. The self-powered non-destructive intelligent detection device for cage ropes according to claim 2, wherein: The pre-tightening spring (107) is sleeved on the slide post (106).

4. The self-powered non-destructive intelligent detection device for cage ropes according to claim 2, wherein: The magnetorheological elastomer element (5) includes a cylindrical housing (504). A magnetorheological elastomer (503) is provided in the inner cavity of the housing (504). An electromagnetic coil (502) is wound around the outer periphery of the magnetorheological elastomer (503). The electromagnetic coil (502) is electrically connected with the generator (104). Thrust posts (501) are respectively provided at both ends of the magnetorheological elastomer (503) in the housing (504). The thrust posts (501) are slidably mated with the housing (504). One of the thrust posts (501) is fixed to the base (103), and the other thrust post (501) is fixed to the slide table (102).

5. The self-powered non-destructive intelligent detection device for cage ropes according to claim 4, characterized in that: The housing (504) is made of a magnetic insulation material.

6. The self-powered non-destructive intelligent detection device for cage ropes according to claim 4, characterized in that: The magnetorheological elastomer (503) includes a cylindrical silicone rubber matrix and magnetic particles dispersed in the silicone rubber matrix.

7. The self-powered non-destructive intelligent detection device for cage guide wire ropes according to claim 1, characterized in that: The axle of the friction wheel (101) is rotatably provided on a Y-shaped frame (108). The handle part of the Y-shaped frame (108) is fixed to the base (103) by a bolt (109).

8. The self-powered non-destructive intelligent detection device for cage ropes according to claim 7, wherein: A through hole (110) for the bolt (109) to penetrate is provided on the handle part of the Y-shaped frame (108), and the through hole (110) is a strip-shaped hole.

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