A mine blind shaft deep hole rope replacement auxiliary tool

Abstract

The utility model relates to the technical field of mine mechanical equipment discloses a mine blind vertical shaft deep hole rope replacement auxiliary frock, including frame, set up in the frame inside's rope clamp subassembly and buffer component, the frame inside side wall is equipped with the sliding slot, the sliding block is connected in the sliding slot, the side of sliding block far away from the center is equipped with disc spring, the rope clamp subassembly includes the wedge and the inclined link of connecting wedge and sliding block to set up oppositely, and the both ends of link are rotatedly connected with sliding block and wedge through the pin, when the rope falls unexpectedly, the friction force drives the wedge to go down, forces the wedge to contract inwards and realizes self -locking clamping through the link mechanism, and sliding block horizontal sliding is pulled to extrude disc spring and carries out energy -absorbing buffer. The utility model solves the problem that the existing rigid clamping device can cause deep well rope shearing damage, has the beneficial effect that the flexible rope protection is braked fast.

Description

Technical Field

[0001] This utility model relates to the field of mining machinery and equipment technology, and in particular to an auxiliary tool for changing ropes in deep holes of blind shafts in mines. Background Technology

[0002] In deep-hole operations in mine blind shafts, replacing hoisting wire ropes or guide ropes is an extremely risky and technically demanding task. Because deep-shaft ropes are typically very long and heavy, specialized auxiliary tools are needed during replacement to temporarily secure or prevent them from falling uncontrollably during the process, thus preventing serious safety accidents caused by the rope slipping during disassembly or assembly.

[0003] Currently, most existing rope clamping devices employ wedge-type or hydraulic rigid clamping structures. While these structures can provide significant clamping force, they often have significant drawbacks when facing extreme situations where ropes unexpectedly and rapidly descend. Specifically, when a heavy-load rope falling at high speed is instantly locked by a rigid clamp, it generates tremendous impact kinetic energy. This energy cannot be absorbed by the device itself and is entirely applied to the contact surface between the rope and the clamp.

[0004] This rigid braking method, lacking a buffer mechanism, easily causes the rope to be subjected to enormous shearing forces at the clamping point, resulting in surface damage, strand breakage, or even complete snapping. This not only causes costly equipment losses but may also lead to secondary accidents caused by the falling weight. Furthermore, some existing devices cannot adaptively adjust the clamping response according to the rope's descent speed, resulting in insufficient clamping at low speeds and the risk of "locking up" and damaging the rope at high speeds.

[0005] Therefore, this utility model proposes an auxiliary tool for changing ropes in deep holes of blind shafts in mines to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the existing technology, the auxiliary tooling for replacing deep-hole ropes in blind shafts of mines lacks an effective buffer protection mechanism. When the rope falls unexpectedly and rapidly, rigid clamping can easily cause damage to the rope surface or even shear breakage. In addition, it cannot adaptively adjust the clamping force. The present invention aims to provide an auxiliary tooling for replacing deep-hole ropes in blind shafts of mines with an improved structure that can effectively solve the above problems.

[0007] This utility model provides an auxiliary tooling for changing ropes in deep holes of blind shafts in mines, comprising: a frame, wherein trunnions are fixedly connected to the outer walls of the left and right sides of the frame, and through holes for ropes to pass through are provided at the center of the top and bottom of the frame; and a rope clamping assembly and a buffer assembly disposed inside the frame.

[0008] The buffer assembly has multiple sets of sliding grooves on the left and right sidewalls inside the frame. Each set of sliding grooves has a slider slidably connected inside. A disc spring is fixedly connected inside the sliding groove and on the side of the slider away from the center of the frame. One end of the disc spring abuts against the bottom of the sliding groove, and the other end abuts against the outer sidewall of the slider.

[0009] Furthermore, the rope clamping assembly, the slider, and the frame are combined via a multi-link linkage mechanism. The rope clamping assembly includes two clamps disposed opposite each other in the central region of the frame, as well as multiple sets of connecting rods and pins. The side of the slider near the center of the frame is rotatably connected to one end of the connecting rod via the pin, and the other end of the connecting rod is rotatably connected to the outer wall of the clamp via the pin. The connecting rod is inclined relative to the horizontal plane, so that when the clamp moves downward in the vertical direction, it can pull the slider to slide in the groove and squeeze the disc spring via the connecting rod.

[0010] Preferably, the inner sidewalls of the collets have herringbone anti-slip grooves. This groove structure can increase the coefficient of friction with the rope surface. A return spring is also provided between the two collets. The two ends of the return spring are respectively fixedly connected to the inner sidewalls of the two collets to assist the collets in returning to their original position.

[0011] Preferably, the rope clamping assembly further includes a handle and an eccentric wheel. The handle is rotatably connected to the front sidewall of the frame and extends through into the interior of the frame for external manual operation.

[0012] Preferably, the handle is fixedly connected to the eccentric wheel at one end inside the frame. The eccentric wheel is rotatably connected to the inner bottom surface of the frame, and the outer periphery of the eccentric wheel abuts against the bottom of the two jaws. The eccentric wheel is used to push the jaws upward when rotating, so that they open to both sides through the linkage mechanism.

[0013] Preferably, the chute is symmetrically opened along the height direction of the frame, and the slider is restricted to reciprocating in the chute in a horizontal direction perpendicular to the direction in which the rope passes, thereby ensuring the left-right balance of the device when subjected to force.

[0014] Preferably, the connecting rods are respectively disposed on the front and rear surfaces of the slip, and the two connecting rods on the same side are symmetrically distributed about the central transverse axis of the slip, forming a stable four-bar support structure to prevent the slip from deflecting during movement.

[0015] Preferably, the frame is a hollow rectangular box structure, the groove is directly recessed into the thickened part of the inner wall of the frame, and the axis of the through hole coincides with the center line of the two clamps when they are closed, so as to ensure smooth rope passage.

[0016] Preferably, the disc spring is composed of multiple stacked disc-shaped spring pieces. The disc spring is used to provide a high-strength reaction force when the slider slides outward under the tension transmitted by the connecting rod, so as to absorb impact energy and limit the displacement distance of the slider.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model solves the problem that rigid clamping devices in the prior art are prone to shearing damage or breakage of ropes when they fall accidentally by setting up a linkage buffer clamping mechanism composed of a slip, a connecting rod, a slider and a disc spring. It achieves the technical effect of using the friction self-locking principle to achieve rapid braking while absorbing impact energy by squeezing the disc spring through the slider, thus achieving flexible buffer protection.

[0019] 2. This utility model solves the problems of difficulty in loosening and cumbersome operation of existing self-locking clamping devices when initially threading ropes or at the end of work by setting a handle and eccentric wheel adjustment mechanism on the side wall of the frame. It achieves the technical effect of conveniently controlling the opening and closing of the clamp by turning the handle, which significantly improves the efficiency and convenience of on-site operation.

[0020] 3. This utility model solves the problem of mechanism jamming or uneven clamping force caused by symmetrically setting sliding grooves and sliders on both sides inside the frame, and using inclined connecting rods to connect the clamping jaws and sliders to form a four-bar linkage mechanism. It achieves the technical effect of automatically balancing the off-center load generated by rope torsion, ensuring stable and reliable clamping action, and automatically increasing the clamping force with the falling resistance. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of an auxiliary tool for changing ropes in a deep hole of a blind vertical shaft in a mine, as proposed in this utility model.

[0022] Figure 2 This is a schematic diagram of the handle for changing the auxiliary tooling of a deep hole rope replacement device in a mine blind shaft, as proposed in this utility model.

[0023] Figure 3 This is a schematic diagram of the connecting rod of an auxiliary tooling for changing deep-hole ropes in a mine blind shaft, as proposed in this utility model.

[0024] Figure 4 This is a schematic diagram of the slip of a locking device for replacing the rope in a deep hole of a blind shaft in a mine, as proposed in this utility model.

[0025] Legend:

[0026] 1. Rope clamping assembly; 101. Locking clip; 102. Connecting rod; 103. Eccentric wheel; 104. Handle; 105. Through hole; 106. Pin; 2. Buffer assembly; 201. Disc spring; 202. Slide groove; 203. Slider; 3. Frame; 4. Trunnion. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Example:

[0029] Please refer to Figures 1 to 4 This utility model provides an auxiliary tooling for changing deep-hole ropes in mine blind shafts. It aims to solve the problem that in the prior art, deep-well rope changing devices are prone to rope breakage or damage due to rigid clamping when the rope falls unexpectedly and rapidly, and lack an effective adaptive buffer protection mechanism.

[0030] like Figure 1 and Figure 2 As shown, the auxiliary tooling for changing deep-hole ropes in a mine blind shaft mainly includes a frame 3 as the main support, and a rope clamping assembly 1 and a buffer assembly 2 installed inside the frame 3 and working together. The frame 3 serves as the mounting base of the entire device and the main support for the internal components. It has a sturdy, hollow rectangular box structure to accommodate the rope clamping assembly 1 and the buffer assembly 2 and to provide the necessary travel space for each internal moving part, while protecting the internal precision mechanism from direct impacts from the external environment such as falling rocks and dust.

[0031] The left and right outer walls of the frame 3 are fixedly connected with trunnions 4 by welding or integral casting. The trunnions 4 are used to hang and fix the tooling to the crossbeam or other supporting structure on the construction site. The reaction force of the external crossbeam is used to bear the impact load when the rope falls, ensuring the stability and safety of the device during operation. The top center and bottom center of the frame 3 are provided with through holes 105 for the rope to pass through. The through holes 105 are used for the rope to be replaced to pass through from the top of the frame 3 to the bottom and extend downward. The axes of the two through holes 105 coincide with the central vertical axis of the frame 3, ensuring that the rope is in the geometric center area of ​​the frame 3 in the normal passing state, avoiding unnecessary friction interference between the rope and the inner wall of the frame 3 in the non-working state, and providing a position reference for the subsequent centering and clamping of the rope by the rope clamping assembly 1.

[0032] In the internal structural layout of frame 3, the rope clamping assembly 1 is located in the central area of ​​frame 3 and is directly surrounding the rope. It is used to frictionally clamp and fix the rapidly descending rope. The buffer assembly 2 is symmetrically distributed on the left and right side wall areas inside frame 3. It is used to provide elastic support for the rope clamping assembly 1 and absorb impact energy at the moment of clamping. Through the linkage between the rope clamping assembly 1 and the buffer assembly 2, the kinetic energy of the falling rope is converted into the displacement energy of the mechanical parts and the potential energy of the elastic element, thereby achieving flexible braking.

[0033] To solve the above-mentioned technical problems, the auxiliary tooling for changing deep hole ropes in the mine blind shaft also includes a special buffer component 2 and a rope clamping component 1 linkage mechanism. Furthermore, this linkage mechanism realizes the conversion of rope descent force into horizontal buffer force through specific geometric constraints and mechanical transmission paths.

[0034] Please refer to the following carefully. Figure 2 , Figure 3 and Figure 4 The core structure is described in detail below: The buffer component 2 includes multiple sets of sliding grooves 202 directly opened on the inner walls of the left and right sides inside the frame 3. The sliding grooves 202 are symmetrically distributed along the height direction of the frame 3. Furthermore, the sliding grooves 202 are processed into rectangular or dovetail-shaped groove structures recessed in the thickened part of the inner wall of the frame 3, which are used to provide a horizontal guide trajectory for the internal moving parts and restrict their movement freedom to only one direction.

[0035] Inside each set of slide grooves 202, a slider 203 is slidably installed. The outer dimensions of the slider 203 are precisely matched with the inner cavity dimensions of the slide groove 202, so that the slider 203 can move back and forth along a horizontal straight path perpendicular to the direction of rope travel within the slide groove 202 without shaking or falling out. As a force transmission medium, the slider 203 has an elastic deformation space reserved between its side near the side wall of the frame 3 and the bottom of the slide groove 202.

[0036] Within this space, a disc spring 201 is fixedly installed inside the slide groove 202. The disc spring 201 is located on the side of the slider 203 away from the center of the frame 3. The disc spring 201 is assembled from multiple high-strength disc-shaped spring pieces. Its outer end face abuts against the bottom wall of the slide groove 202, and its inner end face directly abuts against the outer wall of the slider 203. When the slider 203 is pushed outward by the center, the disc spring 201 is compressed and generates a huge reaction force. This reaction force not only serves to buffer and absorb energy, but also limits the maximum displacement of the slider 203, preventing it from retreating excessively and causing the front end clamping failure.

[0037] Meanwhile, the rope clamping assembly 1 is linked with the buffer assembly 2 through a linkage mechanism. The rope clamping assembly 1 includes two clamps 101 that are arranged opposite each other in the central area inside the frame 3. The clamps 101 are the actuators that directly contact the rope. Their positions are in the middle of the two sliders 203. In order to realize the conversion of force, the side of the slider 203 near the center of the frame 3 is rotatably connected to one end of the connecting rod 102 through the pin 106. The pin 106 passes through the connecting hole of the slider 203 and the connecting rod 102 laterally to form a hinge point.

[0038] The other end of the connecting rod 102 is also rotatably connected to the outer wall of the slip 101 via the pin 106, so that the connecting rod 102 spans between the slider 203 and the slip 101. It is particularly important that the connecting rod 102 is inclined relative to the horizontal plane in the installed state, that is, the end of the connecting rod 102 connected to the slip 101 is slightly higher or slightly lower than the end connected to the slider 203, or it maintains a specific initial angle when the rope is not under force.

[0039] This multi-link linkage mechanism, consisting of a slip 101, a connecting rod 102, a slider 203, and a frame 3, ensures that when the slip 101 moves downward with the rope, the angle of the connecting rod 102 changes due to the geometric constraints of the distance between the pins 106, thereby pulling the slider 203 to overcome the resistance of the disc spring 201 and slide within the groove 202. This structural design not only decomposes the vertical impact force into a horizontal buffer force, but also utilizes the toggle effect of the connecting rod 102 to achieve self-locking and force-increasing clamping of the rope.

[0040] Based on the above embodiments, the present invention may further include the following preferred technical solutions:

[0041] As a preferred embodiment, in order to improve the rope gripping efficiency of the Kava 101 and ensure its reset capability in the non-working state, please refer to... Figure 2 and Figure 4Both slips 101 have herringbone-shaped anti-slip grooves on their opposing inner walls. The texture of these anti-slip grooves is designed to slope downwards, thereby generating greater unidirectional frictional resistance when in contact with the rope, promoting the triggering of the self-locking action. At the same time, a return spring is provided between the two slips 101. The two ends of the return spring are fixedly connected to the opposing inner surfaces of the two slips 101. The return spring is in a stretched or compressed state and is used to provide restoring force after the external force is released, assisting the slips 101 to return to the initial standby position.

[0042] As another preferred embodiment, in order to enable manual intervention in the clamping state of the device and facilitate rope threading, the rope clamping assembly 1 also includes a manual control mechanism, namely a handle 104 and an eccentric wheel 103. The handle 104 is rotatably connected to the front side wall of the frame 3 and extends through into the interior of the frame 3. One end of the handle 104 located inside the frame 3 is fixedly connected to the eccentric wheel 103. The eccentric wheel 103 is rotatably connected to the inner bottom surface of the frame 3, and the highest point of the outer periphery of the eccentric wheel 103 is designed to abut against the bottom of the two slips 101. When it is necessary to release the slips 101 to thread the rope, the operator rotates the handle 104 to drive the eccentric wheel 103 to rotate. The long diameter end of the eccentric wheel 103 pushes the slips 101 upward, forcing the slips 101 to move upward along the trajectory of the connecting rod 102 and open outward.

[0043] In another preferred embodiment, to ensure the balance of clamping force, the slide groove 202 is symmetrically opened along the height direction of the frame 3, and the slider 203 is strictly restricted to reciprocating in the horizontal direction perpendicular to the direction in which the rope passes through within the slide groove 202. At the same time, the connecting rods 102 are respectively arranged on the front and rear surfaces of the slip 101, and the two connecting rods 102 on the same side are symmetrically distributed about the central transverse axis of the slip 101. This symmetrical double connecting rod and double slider layout can effectively counteract the off-center load torque generated by the rope torsion, prevent the slip 101 from tipping over or jamming during the clamping process, and ensure the smoothness of the mechanism's operation.

[0044] As another preferred embodiment, in order to enhance the overall rigidity and buffering performance of the device, the frame 3 preferably adopts a hollow rectangular box structure. The groove 202 is directly recessed into the thickened part of the inner wall of the frame 3 to avoid weakening the structural strength due to the groove. The axis of the through hole 105 coincides with the center line when the two slips 101 are closed to ensure centering. In addition, the disc spring 201 is composed of multiple high-rigidity disc-shaped spring sheets stacked together. Compared with ordinary helical springs, the disc spring 201 has the characteristics of short stroke, large load and non-linear stiffness. It can provide a very strong non-linear reaction force when the slider 203 slides outward under the huge pulling force transmitted by the connecting rod 102, effectively preventing the buffer stroke from being broken.

[0045] The working principle of this utility model of auxiliary tooling for replacing deep-hole ropes in mine blind shafts is as follows:

[0046] During the initial installation phase, the operator fixes the tooling to the crossbeam at the construction site via the trunnions 4 on both sides of the frame 3. Then, by manually turning the external handle 104, the internal eccentric wheel 103 is rotated. The long diameter end of the eccentric wheel 103 pushes the bottom of the slip 101 upward. Under the traction of the connecting rod 102, the slip 101 is forced to move upward. At the same time, since the other end of the connecting rod 102 is positioned by the slider 203, the slip 101 will inevitably open to both sides during the upward process, thereby increasing the gap between the two slips 101, so that the rope can be smoothly inserted into the through hole 105 at the top of the frame 3 and pass through the entire device.

[0047] When the rope is threaded and enters the standby working state, the operator turns the handle 104 in the opposite direction, the eccentric wheel 103 resets, and the supporting force on the slip 101 is reduced. Under the action of the reset spring and its own weight, the slip 101 falls down and moves towards the middle. At this time, the herringbone anti-slip groove on the inner side of the slip 101 maintains slight contact or pre-clamping with the rope surface. If the rope runs normally and slowly, the contact friction is insufficient to trigger the mechanism.

[0048] When an accident causes the rope to fall rapidly, the friction between the rope and the slip 101 increases dramatically. This friction causes the slip 101 to move rapidly downward with the rope. Due to the geometric constraint characteristics of the four-bar linkage consisting of the connecting rod 102, the slip 101, and the slider 203, the slip 101 is pulled by the connecting rod 102 as it moves downward, and is forced to contract rapidly towards the center, thereby generating a huge clamping force to firmly grip the rope and achieve self-locking braking. The faster the rope falls, the greater the friction and the faster and more powerful the clamping action.

[0049] At the same time, the huge impact force generated at the moment of clamping is transmitted to the slider 203 through the connecting rod 102, forcing the slider 203 to overcome the strong resistance of the disc spring 201 and slide outward in the groove 202. The movement of the slider 203 compresses the disc spring 201, converting part of the kinetic energy of the falling rope into the elastic potential energy of the disc spring 201. This buffering process effectively reduces the peak stress of rigid clamping and avoids the rope from being cut due to excessive instantaneous clamping force. Under the reaction force of the disc spring 201, the displacement of the slider 203 is limited to a safe range, preventing clamping failure due to excessive retreat, thus ensuring the reliability of braking while protecting the rope.

[0050] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An auxiliary tooling for changing ropes in deep holes of blind shafts in mines, comprising a frame (3), wherein trunnions (4) are fixedly connected to the outer walls of the left and right sides of the frame (3), and through holes (105) for ropes to pass through are provided at the center of the top and bottom of the frame (3), characterized in that, The tooling also includes a rope clamping assembly (1) and a buffer assembly (2) disposed inside the frame (3). The buffer assembly (2) includes multiple sets of slide grooves (202) opened on the left and right side walls inside the frame (3). Each set of slide grooves (202) is slidably connected to a slider (203). Inside the slide groove (202) and on the side of the slider (203) away from the center of the frame (3), a disc spring (201) is fixedly connected. One end of the disc spring (201) abuts against the bottom of the slide groove (202), and the other end abuts against the outer side wall of the slider (203). The rope clamping assembly (1) includes two clamps (101) arranged opposite to each other in the central area inside the frame (3), as well as multiple sets of connecting rods (102) and pins (106). The slider (203) is rotatably connected to one end of the connecting rod (102) on the side near the center of the frame (3) through the pin (106). The other end of the connecting rod (102) is rotatably connected to the outer wall of the clamp (101) through the pin (106). The connecting rod (102) is inclined relative to the horizontal plane, so that when the clamp (101) moves downward in the vertical direction, it pulls the slider (203) through the connecting rod (102) to slide in the groove (202) and squeeze the disc spring (201).

2. The auxiliary tooling for changing ropes in deep holes of blind shafts in mines according to claim 1, characterized in that, The inner sidewalls of the two slips (101) are provided with herringbone-shaped anti-slip grooves, and a return spring is provided between the two slips (101). The two ends of the return spring are respectively fixedly connected to the inner sidewalls of the two slips (101).

3. The auxiliary tooling for changing ropes in deep holes of blind shafts in mines according to claim 1, characterized in that, The rope clamping assembly (1) also includes a handle (104) and an eccentric wheel (103), the handle (104) being rotatably connected to the front sidewall of the frame (3) and extending through into the interior of the frame (3).

4. The auxiliary tooling for changing ropes in deep holes of blind shafts in mines according to claim 3, characterized in that, The handle (104) is fixedly connected to the eccentric wheel (103) at one end inside the frame (3). The eccentric wheel (103) is rotatably connected to the bottom surface inside the frame (3), and the outer periphery of the eccentric wheel (103) abuts against the bottom of the two clasps (101).

5. The auxiliary tooling for changing ropes in deep holes of blind shafts in mines according to claim 1, characterized in that, The chute (202) is symmetrically opened along the height direction of the frame (3), and the slider (203) is restricted to reciprocating in the chute (202) in a horizontal direction perpendicular to the direction through which the rope passes.

6. The auxiliary tooling for changing ropes in deep holes of blind shafts in mines according to claim 1, characterized in that, The connecting rods (102) are respectively disposed on the front and rear surfaces of the slip (101), and the two connecting rods (102) on the same side are symmetrically distributed about the central transverse axis of the slip (101).

7. The auxiliary tooling for changing ropes in deep holes of blind shafts in mines according to claim 1, characterized in that, The frame (3) has a hollow rectangular box structure. The groove (202) is recessed in the thickened part of the inner wall of the frame (3). The axis of the through hole (105) coincides with the center line of the two latches (101) when they are closed.

8. The auxiliary tooling for changing ropes in deep holes of blind shafts in mines according to claim 1, characterized in that, The disc spring (201) is composed of multiple disc-shaped spring pieces stacked together. The disc spring (201) is used to provide a reaction force when the slider (203) slides outward under the tension transmitted by the connecting rod (102).

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