A mine shaft hoisting rope changing device

Abstract

The present invention relates to the technical field of rope replacement for hoists, and discloses a mine shaft hoist rope replacement device, comprising a plurality of sheaves, a capstan, and an old rope body that passes through the plurality of sheaves and the capstan in sequence, wherein the surface of the old rope body is respectively provided with containers A and B, and further comprising a frame body and a cross frame provided on the surface of the frame body, wherein the frame body and the cross frame are provided at the shaft opening of the shaft, a tensioning assembly provided on the surface of the frame body, the tensioning assembly comprising a fixed frame fixedly connected to the top of the frame body, a plurality of cylinders provided on the surface of the fixed frame, a connecting block fixedly connected to the output end of the cylinder, a tensioning wheel rotatably connected to the inner wall of the connecting block, and an adjusting assembly provided on the surface of the frame body. The present invention maintains a certain tension when a new rope is replaced by providing a tensioning assembly and an adjusting assembly, and at the same time, clamps the new rope with the help of a plurality of clamping blocks in the adjusting assembly and rotates with a rotating ring, so as to correct the misalignment and skewness phenomenon that occurs when the new rope is lifted with the old rope, and reduce the wear of the new rope by the sheave.

Description

Technical Field

[0001] The invention relates to the technical field of hoist rope replacement, and more specifically, to a mine shaft hoist rope replacement device. Background Art

[0002] Mine shaft hoist is a key equipment in the production system of coal mines and other underground mines. At present, friction shaft hoists are more commonly used in the industry. Mine shaft hoists achieve the functions of lifting and transportation by coordinating the lifting container (such as cage, skip, etc.) with the lifting wire rope and driving the winch or capstan to make the lifting container move up and down along the tankway in the shaft.

[0003] Due to the long-term friction between the wire rope and the pads or bushings on the sheave and drum, it is easy to age. The "Coal Mine Safety Regulations" stipulate that the service life of the friction hoist wire rope is 2 years, so the wire rope needs to be replaced regularly. According to the description in the patent document of the existing published patent application number 202010871526.2 and the name of a vertical shaft hoisting wire rope replacement process, the prior art mostly adopts the method of replacing the old rope with the new rope, that is, the new rope is passed around the pulley set at the wellhead on the auxiliary bucket side to the old rope and connected with the old rope, and the main bucket is lowered, and one end of the old rope bound to the new rope is lifted and drives the new rope to pass through the 2# sheave, the winch drum and the 1# sheave in sequence, and the old rope is replaced with the new rope in the way that the new rope spits out the old rope. The entire rope changing process only needs to be completed on the ground, and during the rope changing process, a transition rope is used to connect the new rope and the old rope, and a steel rope clamp is used to clamp the new rope and the old rope on the main bucket side to prevent the new rope and the old rope from twisting together, thereby avoiding damage to the rope diameter of the wire rope.

[0004] However, since the stress of the new wire rope has not been released before leaving the factory and it shakes during lifting, the new rope and the old rope will be misaligned and skewed before the old rope pulls the new rope into the guide track of the sheave. This will make it easy for the new rope to directly contact and rub against the side wall of the sheave, increasing the friction of the new rope during the lifting process and causing serious wear of the new rope. If it is not corrected in time, the new rope and the old rope in a misaligned and skewed state will pass around the winch drum, which will lead to problems such as increased lifting resistance of the winch drum. Summary of the invention

[0005] The invention discloses a mine vertical shaft hoisting rope changing device, which solves the technical problems in the above-mentioned background technology.

[0006] The present invention discloses a mine shaft hoisting rope changing device, comprising a plurality of sheaves, a capstan, and an old rope body that passes through the plurality of sheaves and the capstan in sequence, wherein a container A and a container B are respectively installed on the surface of the old rope body, and further comprising a frame body and a cross frame installed on the surface of the frame body, wherein the frame body and the cross frame are arranged at the shaft opening of the shaft;

[0007] A tensioning assembly is arranged on the surface of the frame, the tensioning assembly comprises a fixing frame fixedly connected to the top of the frame, a plurality of cylinders are installed on the surface of the fixing frame, a connecting block is fixedly connected to the output end of the cylinder, and a tensioning wheel is rotatably connected to the inner wall of the connecting block;

[0008] An adjusting assembly is arranged on the surface of the frame, the adjusting assembly comprises two supporting plates fixedly connected to the top of the frame, a plurality of sleeves are fixedly connected between the two supporting plates, a movable guide frame is also slidably connected between the two supporting plates, a plurality of through holes adapted to the sleeves are opened on the surface of the movable guide frame, and a rotating ring is rotatably connected through the through holes, a plurality of clamping blocks are hinged on the top of the rotating ring, a driving member for driving the rotating ring to rotate is installed on the surface of the movable guide frame, and the movable guide frame is connected to the tensioning assembly through a movable assembly;

[0009] It also includes a rope drum, a new rope body is wound on the surface of the rope drum, one end of the new rope body passes around the tensioning wheel, passes through the through hole and the sleeve, and is connected to the old rope body through a rope clamp, and pressure sensors are arranged around both sides of the inner wall of the sheave.

[0010] Preferably, the movable component includes a movable plate adapted to the connecting block, the movable plate is slidably connected to the surface of the fixed frame, and both ends of the movable plate are connected to the fixed frame through springs, an adjustment plate is fixedly connected to the surface of the movable plate, a plurality of guide rails are fixedly connected to the bottom of the movable guide frame, and the adjustment plate is connected to the guide rails through guide rods.

[0011] Preferably, the top of the clamping block is set to a triangle, and the bottom of the sleeve is provided with an inclined surface that matches the shape of the top of the clamping block. The inner diameter gradually decreases from the bottom of the sleeve to the center of its inner wall. When the output end of the cylinder moves toward the inside of the cylinder so that the connecting block pushes the movable plate upward, the guide rod on the surface of the adjustment plate slides in the guide rail and pushes up the movable guide frame. The clamping block rotates toward the center of the sleeve during the upward movement and clamps the new rope body.

[0012] Preferably, a rotating shaft is fixedly connected inside the clamping block, the rotating shaft is rotatably connected to the rotating ring, and the rotating shaft is connected to the rotating ring via a torsion spring.

[0013] Preferably, a plurality of anti-slip strips are fixedly connected to one side of the clamping block close to the center of the sleeve, and the plurality of anti-slip strips are arranged obliquely.

[0014] Preferably, the driving member includes a plurality of motors A installed on one side of the movable guide frame, a synchronous wheel is fixedly connected to the bottom of the rotating ring, and the output end of the motor A is connected to the synchronous wheel through a synchronous belt.

[0015] Preferably, an auxiliary component is also included, which includes two push plates slidably connected to one side of the cross frame, a clamping wheel is rotatably connected between the two push plates, a motor B is fixedly connected to the side of the frame away from the push plate, a screw is fixedly connected to the output end of the motor B, the screw is respectively inserted into the frame and the cross frame, and positive threads and negative threads are respectively provided on the surface of the screw, a positioning plate is slidably connected to one side of the frame, the positioning plate is threadedly connected to the positive thread area on the surface of the screw, and the end of the screw surface close to the negative thread is threadedly connected to the push plate.

[0016] Preferably, the tension wheel and the pressure wheel are both roller parts or pulley parts equipped with tension sensors.

[0017] Preferably, two fixing plates are fixedly connected to the top of the frame, and a guide wheel is rotatably connected between the two fixing plates.

[0018] Preferably, the new rope body passes over the guide wheel, passes under the tensioning wheel, and then passes through the through hole and the inside of the sleeve.

[0019] The rope changing steps of the present invention are:

[0020] 1. First, replace the two groups of old ropes near the center or near the two sides, install the frame and the cross frame on the top of the wellhead, and press the tightening wheel against the surface of the four groups of old ropes, and tighten them through the auxiliary components;

[0021] 2. The old rope body is driven by the winch to lift the container B to the wellhead, and then two sets of new rope bodies are led out from the rope drum, passing over the top of the guide wheel and the bottom of the tension wheel, and then passing through the through hole and the inside of the sleeve, and connected to the old rope body through the rope clamp;

[0022] 3. Continue to lower container B through the winch and lift container A, so that the old rope body and the rope clamp can lift the new rope body, until the new rope body passes through the first set of sheaves, the winch and the second set of sheaves respectively, then remove the rope clamp and fix the new rope body separately. At this time, container A reaches the wellhead and container B is at the bottom of the well;

[0023] 4. The winch drives and lifts container B to the wellhead, cuts off the two sets of old rope bodies that need to be replaced, connects the new rope body to container B, and cancels the separate fixation of the new rope body. The winch continues to drive the container B down, lowers the new rope body to the bottom of the well, and the container A on the other side rises to the wellhead;

[0024] 5. Fix the old rope body on the top of container A with the rope fixing device, and lift up the other two sets of old ropes that do not need to be replaced temporarily, so that the two sets of old ropes that need to be replaced are loosened. After cutting the old ropes, connect the new ropes to container A to complete the replacement of the two sets of old ropes. Then continue to replace the other two sets of old ropes according to steps 1-5;

[0025] 6. Introduce the two sets of replaced old ropes into the rope drum and recycle the old ropes.

[0026] The beneficial effects of the present invention are:

[0027] The present invention provides a tensioning assembly and an adjusting assembly. When the new rope is lifted together with the old rope, the output end of the cylinder presses down the tensioning wheel through the connecting block, so that the new rope is taut and a certain tension is maintained on the surface, thereby reducing the elastic deformation of the new rope after installation. When the new rope is misplaced and skewed during the lifting process and rubs against the inner wall of the sheave, the tensioning wheel at that position is contracted to loosen part of the new rope for easy twisting. The new rope body is clamped by the clamping block, and the new rope is rotated accordingly with the help of the driving member. The new rope is rotated back to the straight position from the side close to the sheave by virtue of the friction between the new rope and the old rope, thereby avoiding the problem of serious wear caused by close contact with the sheave, effectively reducing the workload of manpower for correction and improving the efficiency of rope replacement to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the present invention for illustrating a rope changing process;

[0029] Figure 2 It is a schematic diagram of the present invention for showing the sky wheel and its surface structure;

[0030] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 4 is a schematic diagram of the present invention for illustrating a tensioning assembly;

[0032] Figure 5 It is a schematic diagram of the present invention for showing the coordination of the tensioning assembly and the adjusting assembly;

[0033] Figure 6 It is a cross-sectional view of the present invention for showing the sleeve and its bottom structure;

[0034] Figure 7 The present invention Figure 6 A in the enlarged view;

[0035] Figure 8 It is a schematic diagram of the present invention for displaying auxiliary components.

[0036] In the figure: 1, frame; 11, cross frame; 12, new rope body; 13, old rope body; 14, rope clamp; 15, container A; 151, container B; 16, sheave; 17, pressure sensor; 18, capstan; 19, rope drum; 2, fixed frame; 21, cylinder; 211, connecting block; 212, tensioning wheel; 22, movable plate; 221, adjusting plate; 222, spring; 3, support plate; 31, sleeve Cylinder; 32, movable guide frame; 321, rotating ring; 322, clamping block; 323, anti-slip strip; 324, rotating shaft; 325, torsion spring; 33, motor A; 331, synchronous belt; 332, synchronous wheel; 34, guide rail; 4, push plate; 41, motor B; 411, screw; 412, positive thread; 413, negative thread; 42, positioning plate; 43, tightening wheel; 5, fixing plate; 51, guide wheel. DETAILED DESCRIPTION

[0037] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the present specification. Various examples may omit, replace, or add various processes or components as needed. In addition, the features described in some examples may also be combined in other examples.

[0038] The embodiment of the present invention discloses a mine shaft hoisting rope changing device, such as Figure 1 , Figure 2 and Figure 3 As shown, it includes several sheaves 16, winches 18 and old rope bodies 13 that pass around several sheaves 16 and winches 18 in sequence, and containers A15 and B151 are respectively installed on the surface of the old rope body 13, and bottom ropes are installed at the bottom of containers A15 and B151. It also includes a frame 1 and a cross frame 11 installed on the surface of the frame 1, and the frame 1 and the cross frame 11 are arranged at the wellhead of the vertical shaft, wherein the cross frame 11 is used to be erected on both sides of the top of the wellhead to support the frame 1, and the frame 1 and the cross frame 11 are both detachably installed on the top of the wellhead, and can be promptly removed after the new rope is replaced to resume normal use.

[0039] It should be noted that the above-mentioned "several" refers to the number of the sheaves 16, and the specific number of the sheaves 16 should be determined according to the number of steel ropes of the mine hoist, which is not limited here. At the same time, the corresponding number of "several cylinders 21", "several sleeves 31", and "several motors A33" mentioned below is also consistent with the number of steel ropes of the mine hoist, and the sheaves 16, cylinders 21, sleeves 31 and motors A33 are set accordingly. Figure 2As shown, four overhead sheaves 16 are arranged side by side along the rotation axis direction, which means that in this case, the number of steel ropes of the mine hoist is four, and the number of cylinders 21, the number of sleeves 31 and the number of motors A33 are four respectively.

[0040] like Figure 4 As shown, it also includes a tensioning assembly, which is arranged on the surface of the frame 1. The tensioning assembly includes a fixed frame 2 fixedly connected to the top of the frame 1, and a plurality of cylinders 21 are installed on the surface of the fixed frame 2. The output end of the cylinder 21 is downward or obliquely downward. The output end of the cylinder 21 is fixedly connected to a connecting block 211, and the connecting block 211 is "U"-shaped. The inner wall of the connecting block 211 is rotatably connected to a tensioning wheel 212. After the new rope passes around the bottom of the tensioning wheel 212, it is connected upward to the surface of the old rope, and moves toward the outside of the cylinder 21 through the output end of the cylinder 21, pushing the tensioning wheel 212 to press down the new rope, so that the new rope remains taut, and its surface or internal stress is eliminated to a certain extent, and the elastic deformation of the new rope after installation is reduced.

[0041] An adjusting component is arranged on the surface of the frame 1. The adjusting component includes two supporting plates 3 fixedly connected to the top of the frame 1. A plurality of sleeves 31 are fixedly connected between the two supporting plates 3. The number of sleeves 31 is determined according to the number of steel wire ropes of the mine hoist. A movable guide frame 32 is also slidably connected between the two supporting plates 3. The movable guide frame 32 slides up and down between the two supporting plates 3. A plurality of through holes matching the sleeves 31 are opened on the surface of the movable guide frame 32. A rotating ring 321 is rotatably connected through the through holes. A plurality of clamping blocks 322 are hinged on the top of the rotating ring 321. A driving member for driving the rotating ring 321 to rotate is installed on the surface of the movable guide frame 32. The movable guide frame 32 is connected to the tensioning component through a movable component.

[0042] It also includes a rope drum 19, on the surface of which a new rope body 12 is wound. The rope drum 19 includes a new rope drum and an old rope drum, wherein the new rope body 12 is wound on the new rope drum, and the disassembled old rope is wound up through the old rope drum. One end of the new rope body 12 passes around the tensioning wheel 212, passes through the through hole and the sleeve 31, and is connected to the old rope body 13 through the rope clamp 14. After the rope clamp 14 tightly connects the new rope body 12 and the old rope body 13, the old rope body 13 is driven upward by the winch 18, and then the new rope body 12 is simultaneously driven to lift. Pressure sensors 17 are arranged around both sides of the inner wall of the sheave 16.

[0043] Specifically, after the new rope body 12 passes around the sky sheave 16, if it is skewed or misaligned with the new rope, the new rope body 12 will be skewed toward the inner wall of the sky sheave 16, and the pressure sensor 17 on the skewed side will be subjected to increased force, while the pressure sensor 17 on the other side will be subjected to reduced force, thereby causing a pressure difference. A PLC controller is installed in the frame 1, and the PLC controller is electrically connected to the pressure sensors 17 on multiple sky sheaves 16, and the PLC controller is also electrically connected to the cylinder 21. Therefore, the pressure difference signal is transmitted to the PLC controller through the pressure sensor 17, and the PLC controller controls the cylinder 21 corresponding to the sky sheave 16 to move the output end of the cylinder 21 toward the inside of the cylinder 21, thereby stopping the tensioning of the new rope body 12 at this position, relaxing the new rope body 12, avoiding more intense friction between the tightened new rope body 12 and the side wall of the sky sheave 16, and synchronously pausing the drive and lifting of the winch 18 and the rope releasing process of the rope drum 19, so that the rope changing operation is suspended, which is convenient for the subsequent correction of the old rope.

[0044] Further, such as Figure 4 and Figure 5 As shown, in this embodiment, the movable component includes a movable plate 22 adapted to the connecting block 211, the movable plate 22 is slidably connected to the surface of the fixed frame 2, and both ends of the movable plate 22 are connected to the fixed frame 2 through springs 222, and both ends of the spring 222 are fixedly connected to the movable plate 22 and the fixed frame 2 respectively, an adjustment plate 221 is fixedly connected to the surface of the movable plate 22, a plurality of guide rails 34 are fixedly connected to the bottom of the movable guide frame 32, the adjustment plate 221 is connected to the guide rails 34 through guide rods, and the guide rods are fixedly connected to the surface of the adjustment plate 221 and slide in the guide rails 34.

[0045] Furthermore, in the present embodiment, the top of the clamping block 322 is set to be triangular, and the inner bottom of the sleeve 31 is provided with an inclined surface adapted to the shape of the top of the clamping block 322. The inner diameter gradually decreases from the inner bottom of the sleeve 31 to the center of its inner wall. When the output end of the cylinder 21 moves toward the inside of the cylinder 21, the connecting block 211 pushes the movable plate 22 upward, and the guide rod on the surface of the adjustment plate 221 slides in the guide rail 34 and pushes up the movable guide frame 32. The clamping block 322 rotates toward the center of the sleeve 31 during the upward movement and clamps the new rope body 12.

[0046] Specifically, when the movable guide frame 32 moves upward, and the plurality of clamping blocks 322 cooperate with the inner wall of the sleeve 31 during the upward movement, when rotating and approaching the center position of the sleeve 31, they also gradually approach the new rope body 12, and gradually approach and clamp the new rope. Since the winch 18 stops running at this time, the new rope and the old rope are no longer lifted synchronously, and the new rope that needs to be corrected is no longer tight, the driving member drives the rotating ring 321 to drive the plurality of clamping blocks 322 to rotate, thereby correspondingly twisting the new rope body 12, and the rotation direction is to the side away from the skewed direction of the new rope body 12. Under the action of the torsional force, the new rope body 12 rotates accordingly, and since the new rope body 12 and the old rope body 13 are in contact, there is a certain friction between the two. Therefore, the correspondingly rotating new rope body 12 will revolve on the surface of the old rope body 13, thereby causing the new rope body 12 to gradually change from being skewed to one side to a returning state, thereby completing the correction of the new rope body 12.

[0047] It is worth noting that the inner diameter of the sheave 16 is small, and the deviation distance of the new rope is small. The number of rotations required to rotate the new rope body 12 and return it to the center area is not many. Therefore, damage to the wire rope due to high torsional strength can be avoided, and the new rope body 12 can be prevented from rebounding violently after the clamping block 322 releases its clamping on the new rope body 12, thereby affecting the rope changing process.

[0048] Among them, a rotating shaft 324 is fixedly connected inside the clamping block 322, and the rotating shaft 324 is rotatably connected to the rotating ring 321, and the rotating shaft 324 is connected to the rotating ring 321 through a torsion spring 325. The two ends of the torsion spring 325 are respectively fixedly connected to the rotating shaft 324 and the rotating ring 321. Through the rebound force of the torsion spring 325, the rotating shaft 324 and the clamping block 322 always have a force in the direction away from the center of the sleeve 31, so that the clamping block 322 is always tightly against the inner wall of the sleeve 31.

[0049] A plurality of anti-slip strips 323 are fixedly connected to one side of the clamping block 322 near the center of the sleeve 31. The anti-slip strips 323 can be made of rubber, tpu, nylon, etc. to increase the friction coefficient when the clamping block 322 grasps the wire rope and provide a certain buffer effect to avoid damaging the wire rope. Figure 6 As shown, a plurality of anti-slip strips 323 are respectively arranged on the surface of one side of each clamping block 322 close to the center of the sleeve 31, and some of the anti-slip strips 323 are arranged obliquely, and the steel wire rope is formed by twisting a plurality of steel wires, and its surface has a spiral winding shape. The obliquely arranged anti-slip strips 323 are easy to adapt to the surface shape of the steel wire rope, effectively improving the contact area and contact bite strength.

[0050] like Figure 6As shown, in this embodiment, the driving member includes a plurality of motors A33, which are installed on one side of the movable guide frame 32. The motor A33 is fixed to the movable guide frame 32 by bolting, welding, and clamping. A synchronous wheel 332 is fixedly connected to the bottom of the rotating ring 321. The output end of the motor A33 is connected to the synchronous wheel 332 through a synchronous belt 331. The synchronous belt 331 is transmission-connected to the output end of the motor A33 and is transmission-connected to the synchronous wheel 332. The drive of the motor A33 can drive the synchronous belt 331 to drive, so that the synchronous wheel 332 drives the rotating ring 321 to rotate, and the plurality of clamping blocks 322 that clamp the new rope body 12 drive the new rope body 12 to rotate.

[0051] like Figure 8 As shown, in this embodiment, an auxiliary component is also included, which includes two push plates 4 slidably connected to one side of the cross frame 11, and a clamping wheel 43 is rotatably connected between the two push plates 4. The surface of the clamping wheel 43 is provided with a plurality of grooves adapted to the old rope body 13, so that the old rope body 13 can be easily inserted into the grooves. A motor B41 is fixedly connected to the side of the frame 1 away from the push plate 4, and a screw 411 is fixedly connected to the output end of the motor B41. The screw 411 is respectively penetrated through the frame 1 and the cross frame 11, and a positive thread 412 and a negative thread 413 are respectively provided on the surface of the screw 411, and the thread directions of the positive thread 412 and the negative thread 413 are opposite. A positioning plate 42 is slidably connected to one side of the frame 1, and the positioning plate 42 is threadedly connected to the positive thread 412 area on the surface of the screw 411, and the end of the screw 411 surface close to the negative thread 413 is threadedly connected to the push plate 4.

[0052] Furthermore, the tensioning wheel 212 and the tensioning wheel 43 are both roller parts or pulley parts equipped with tension sensors. When the wire rope is passed around or pressed against the tensioning wheel 212 or the tensioning wheel 43, that is, when the wire rope is passed around or pressed against the rope winding area of ​​the roller part or the pulley part equipped with the tension sensor, the surface tension of the rope can be sensed by the tension sensor. A PLC controller can also be installed in the frame 1, and the tension sensors on the tensioning wheel 212 and the tensioning wheel 43 are electrically connected to the PLC controller. In addition, the PLC controller is also electrically connected to the cylinder 21.

[0053] Specifically, when the frame 1 and the cross frame 11 are erected on the top of the wellhead, the positioning plate 42 is pressed against the inner wall of the wellhead, and the screw 411 is driven by the motor B41 to rotate. The positioning plate 42 threadedly connected to the positive thread 412 area on the surface of the screw 411 will move toward the direction close to the motor B41, and then press against the inner wall of the wellhead. In contrast, the push plate 4 threadedly connected to the reverse thread 413 area on the surface of the screw 411 will move toward the direction away from the motor B41, so that the push plate 4 and the positioning plate 42 are separated from each other, and the pressing wheel 43 on the surface of the push plate 4 will press against the old rope body 13, thereby performing tension detection on the old rope body 13, and because the push plate 4 and the positioning plate 4 are pressed against each other, the tension of the old rope body 13 is detected. 2 are away from each other, and the push plate 4 is pressed against the inner wall of the wellhead, so that the entire frame 1 and the cross frame 11 move toward the direction of the old rope body 13, further improving the stability of the pressing wheel 43 pressing against the surface of the old rope body 13, and the tension sensor on the pressing wheel 43 senses the surface tension of the old rope body 13 and transmits the signal to the PLC controller, and the PLC controller controls the output end of the cylinder 21 to move toward the outside of the cylinder 21, so that the tension wheel 212 presses the new rope body 12 with the same tension value, so that the new rope body 12 and the old rope body 13 are at the same tension value, reducing the surface elasticity of the new rope body 12, and improving the matching degree of the new rope body 12 and the old rope body 13.

[0054] like Figure 3 As shown, two fixing plates 5 are fixedly connected to the top of the frame body 1 , a guide wheel 51 is rotatably connected between the two fixing plates 5 , and the setting positions of the fixing plates 5 and the guide wheel 51 are located on the side of the fixing frame 2 away from the supporting plate 3 .

[0055] Furthermore, the new rope body 12 passes over the guide wheel 51 and under the tensioning wheel 212, then passes through the through hole and the inside of the sleeve 31, and the height of the new rope body 12 is lifted by the guide wheel 51, thereby increasing the contact area between the new rope body 12 and the tensioning wheel 212, thereby further improving the accuracy of the tensioning wheel 212 in detecting the surface tension of the new rope body 12.

[0056] The rope changing steps of the present invention are:

[0057] 1. First, replace the two groups of old ropes near the center or near the two sides, install the frame 1 and the cross frame 11 on the top of the wellhead, and press the tightening wheel 43 against the surface of the four groups of old rope bodies 13, and tighten them through the auxiliary components;

[0058] 2. The old rope body 13 is driven to move by the winch 18, and the container B151 is lifted to the wellhead. Then, two sets of new rope bodies 12 are led out from the rope drum 19, pass over the top of the guide wheel 51 and the bottom of the tension wheel 212, and then pass through the through hole and the inside of the sleeve 31, and are connected to the old rope body 13 through the rope clamp 14;

[0059] 3. Continue to lower the container B151 through the winch 18 and lift the container A15, so that the old rope body 13 and the rope clamp 14 lift the new rope body 12, until the new rope body 12 passes through the first set of sheaves 16, the winch 18 and the second set of sheaves 16 respectively, then remove the rope clamp 14 and fix the new rope body 12 separately. At this time, the container A15 reaches the wellhead, and the container B151 is at the bottom of the well;

[0060] 4. The winch 18 drives and lifts the container B151 to the wellhead, cuts off the two sets of old rope bodies 13 that need to be replaced, connects the new rope body 12 to the container B151, and cancels the separate fixation of the new rope body 12. The winch 18 continues to drive the lowering container B151, lowers the new rope body 12 to the bottom of the well, and the container A15 on the other side rises to the wellhead;

[0061] 5. Fix the old rope body 13 on the top of the container A15 by using the rope fixing device, and lift up the other two groups of old ropes that do not need to be replaced temporarily, so that the two groups of old ropes that need to be replaced are loosened. After the old ropes are cut off, the new ropes are connected to the container A15 to complete the replacement of the two groups of old ropes. Then, continue to replace the other two groups of old ropes according to steps 1-5;

[0062] 6. The two groups of old ropes after replacement are introduced into the rope drum 19, and the old ropes are recovered.

[0063] During the replacement of the new rope, the tension wheel 43 always presses against the old rope to detect the tension of the old rope, and the cylinder 21 outputs in real time to control the tension wheel 212 to press the new rope, so that the new rope maintains the same surface tension as the old rope, reduces its elasticity, and provides guarantee for the subsequent installation of the new rope.

[0064] The above describes an embodiment of the present invention, but this embodiment is not limited to the above-mentioned specific implementation mode. The above-mentioned specific implementation mode is merely illustrative and not restrictive. Under the guidance of this embodiment, ordinary technicians in this field can also make more forms of equivalent embodiments, all of which are within the protection of this embodiment.

Claims

1. A mine shaft hoisting rope changing device, comprising a plurality of sheaves (16), a capstan (18), and an old rope body (13) which passes through the plurality of sheaves (16) and the capstan (18) in sequence, wherein a container A (15) and a container B (151) are respectively installed on the surface of the old rope body (13), characterized in that: It also includes a frame (1) and a cross frame (11) mounted on the surface of the frame (1), wherein the frame (1) and the cross frame (11) are arranged at the wellhead of the vertical shaft; A tensioning assembly is arranged on the surface of the frame (1), the tensioning assembly comprises a fixing frame (2) fixedly connected to the top of the frame (1), a plurality of cylinders (21) are mounted on the surface of the fixing frame (2), a connecting block (211) is fixedly connected to the output end of the cylinder (21), and a tensioning wheel (212) is rotatably connected to the inner wall of the connecting block (211); An adjustment component is arranged on the surface of the frame (1), the adjustment component comprises two support plates (3) fixedly connected to the top of the frame (1), a plurality of sleeves (31) are fixedly connected between the two support plates (3), a movable guide frame (32) is also slidably connected between the two support plates (3), a plurality of through holes matching the sleeves (31) are opened on the surface of the movable guide frame (32), and a rotating ring (321) is rotatably connected through the through holes, a plurality of clamping blocks (322) are hinged on the top of the rotating ring (321), a driving member for driving the rotating ring (321) to rotate is installed on the surface of the movable guide frame (32), and the movable guide frame (32) is connected to the tensioning component through the movable component; It also includes a rope drum (19), a new rope body (12) being wound on the surface of the rope drum (19), one end of the new rope body (12) passing around the tensioning wheel (212), passing through the through hole and the sleeve (31), and then connected to the old rope body (13) via a rope clamp (14), and pressure sensors (17) are arranged around both sides of the inner wall of the sheave (16).

2. A mine shaft hoisting rope changing device according to claim 1, characterized in that: The movable assembly comprises a movable plate (22) adapted to the connection block (211); the movable plate (22) is slidably connected to the surface of the fixed frame (2); both ends of the movable plate (22) are connected to the fixed frame (2) via springs (222); an adjustment plate (221) is fixedly connected to the surface of the movable plate (22); a plurality of guide rails (34) are fixedly connected to the bottom of the movable guide frame (32); and the adjustment plate (221) is connected to the guide rails (34) via guide rods.

3. A mine shaft hoisting rope changing device according to claim 2, characterized in that: The top of the clamping block (322) is arranged in a triangular shape, and the inner bottom of the sleeve (31) is provided with an inclined surface adapted to the shape of the top of the clamping block (322). The inner diameter of the sleeve (31) gradually decreases from the inner bottom to the center of its inner wall. When the output end of the cylinder (21) moves toward the inside of the cylinder (21), the connecting block (211) pushes the movable plate (22) upward, and the guide rod on the surface of the adjustment plate (221) slides in the guide rail (34) and pushes the movable guide frame (32) upward. During the upward movement, the clamping block (322) rotates toward the center of the sleeve (31) and clamps the new rope body (12).

4. A mine shaft hoisting rope changing device according to claim 3, characterized in that: A rotating shaft (324) is fixedly connected inside the clamping block (322), the rotating shaft (324) is rotatably connected to the rotating ring (321), and the rotating shaft (324) is connected to the rotating ring (321) via a torsion spring (325).

5. A mine shaft hoisting rope changing device according to claim 3, characterized in that: A plurality of anti-slip strips (323) are fixedly connected to one side of the clamping block (322) close to the center of the sleeve (31), and the plurality of anti-slip strips (323) are arranged obliquely.

6. A mine shaft hoisting rope changing device according to claim 1, characterized in that: The driving member comprises a plurality of motors A (33) mounted on one side of the movable guide frame (32); a synchronous wheel (332) is fixedly connected to the bottom of the rotating ring (321); and an output end of the motor A (33) is connected to the synchronous wheel (332) via a synchronous belt (331).

7. A mine shaft hoisting rope changing device according to any one of claims 1 to 6, characterized in that: The auxiliary component also includes an auxiliary component, which includes two push plates (4) slidably connected to one side of the cross frame (11), a locking wheel (43) rotatably connected between the two push plates (4), a motor B (41) fixedly connected to the side of the frame (1) away from the push plates (4), a screw (411) fixedly connected to the output end of the motor B (41), the screw (411) respectively passing through the frame (1) and the cross frame (11), and the surface of the screw (411) is respectively provided with a positive thread (412) and a negative thread (413), a positioning plate (42) slidably connected to one side of the frame (1), the positioning plate (42) is threadedly connected to the positive thread (412) area on the surface of the screw (411), and the end of the surface of the screw (411) close to the negative thread (413) is threadedly connected to the push plate (4).

8. A mine shaft hoisting rope changing device according to claim 7, characterized in that: The tension wheel (212) and the tension wheel (43) are both roller parts or pulley parts equipped with tension sensors.

9. A mine shaft hoisting rope changing device according to claim 1, characterized in that: Two fixing plates (5) are fixedly connected to the top of the frame body (1), and a guide wheel (51) is rotatably connected between the two fixing plates (5).

10. A mine shaft hoisting rope changing device according to claim 9, characterized in that: The new rope body (12) passes over the top of the guide wheel (51) and under the tensioning wheel (212), and then passes through the through hole and the inside of the sleeve (31).

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