Tail rope swing suppression device for vertical shaft type multi-rope friction hoist

Abstract

The application discloses a tail rope swing suppression device for a vertical shaft type multi-rope friction hoist. The tail rope swing suppression device comprises a base, a first damping mechanism, a second damping mechanism, a lower layer roller assembly and an upper layer roller assembly. The base has a lower layer moving platform and an upper layer supporting platform. The first damping mechanism is arranged on the lower layer moving platform along a first preset direction. The second damping mechanism is arranged on the upper layer supporting platform along a second preset direction. The lower layer roller assembly cooperates with the first damping mechanism. The upper layer roller assembly cooperates with the second damping mechanism. By using the tail rope swing suppression device for the vertical shaft type multi-rope friction hoist, the damping size can be adaptively adjusted according to the swing amplitude of the tail rope, the swing of the tail rope is effectively suppressed, the impact caused by the swing of the tail rope is slowed down, and thus malignant accidents such as tail rope entanglement are avoided, and the stability and reliability of the hoist in operation are ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mine equipment hoisting, and particularly relates to a tail rope swing suppression device for a vertical shaft type multi-rope friction hoist. BACKGROUND

[0002] The vertical shaft type multi-rope friction hoist is used for hoisting and lowering of underground production materials or workers, and is called the throat of the mine hoist. The tail rope suspension device is installed at the bottom of the hoisting container and the counterweight, and during the operation of the system, due to uneven friction force between the friction pad and the steel wire rope or the influence of manufacturing, assembly and installation errors of the tail rope, the hoisting container will produce a certain jolt and swing amplitude when moving at high speed in the vertically long and narrow shaft, and the tail rope will swing with it. If the swing amplitude of the tail rope is too large, even entanglement occurs, and if no measures are taken, it will cause the occurrence of vicious accidents.

[0003] In view of the large swing of the tail rope in the narrow environment of the shaft, the traditional method changes the weight of the tail rope and the counterweight, reduces the tension difference between the steel wire ropes on the hoisting side and the lowering side, so as to achieve the overall balance of the hoisting system. This method needs to repair, oil or replace the damaged part of the tail rope, which is low in efficiency and causes great economic loss. In order to solve the above problems, some units install rope dividing wood and rope blocking wood on the tank beam at the bottom of the shaft, which collide with the surrounding wooden structure when the tail rope swings greatly, avoiding direct contact and wear of the tail rope with the rigid tank beam. However, the rope dividing wood and the rope blocking wood cannot suppress the swing of the tail rope, and when they are worn out by the tail rope, the tail rope will still collide with the rigid tank beam, causing rapid wear and deformation of the tail rope.

[0004] To solve the above problems, there are currently mainly the following methods to suppress the tail rope swing of the friction hoist in the shaft environment: roller isolation type, partition isolation type and guide wheel isolation type, etc. For example, the roller isolation type tail rope swing suppression device with application numbers CN201520836739 and CN201621197738 installs upper and lower rollers on the cage guide beam, a certain distance exists between each layer of rollers and the tail rope, and the large amplitude swing of the tail rope is limited. For example, the partition isolation type tail rope swing suppression device with application number CN201920996040 sets a certain wear-resistant partition at the bending position of each adjacent tail rope at the bottom of the shaft, and changes the direct collision of the tail rope with the rigid beam into the collision and friction of the tail rope with the partition. For example, the guide wheel isolation type tail rope swing suppression device with application number CN202121567958 installs a guide wheel set device on the support beam of the shaft, and the adjacent tail ropes are isolated in the groove of the guide wheel to realize the guiding and isolation functions of the tail ropes. However, the existing research still has the following problems: first, the rigid beam at the bottom of the existing shaft usually installs the rope divider and the rope stopper, and the tail rope swing suppression device cannot prevent the swing and mutual twisting of the tail rope before the tail rope collides with the rope divider and the rope stopper; second, in the roller isolation type tail rope swing suppression device, the tail rope and the roller are in rigid impact, and when the swing amplitude of the tail rope is large, the severe collision between the tail rope and the roller causes the rapid increase of the wear of the tail rope and the roller, and if the tail rope and the roller collide severely for a long time, the wear of the tail rope and the swing suppression device will be aggravated and the service life will be reduced; third, in the partition isolation type tail rope swing suppression device, the partition is easy to corrode and fail in the dim and damp shaft environment, and the shaft space required for installing the partition is large, and the maintenance and replacement are difficult; fourth, the guide wheel isolation type tail rope swing suppression device limits the swing of the tail rope too much, does not reserve sufficient swing allowance, and the wear between the guide wheel and the tail rope exists, which aggravates the damage of the tail rope and the guide wheel.

[0005] Therefore, the patent proposes a tail rope swing suppression device of a vertical shaft type multi-rope friction hoist, which aims to provide a buffer for the reciprocating swing of the tail rope and can adaptively slow down the swing of the tail rope. SUMMARY

[0006] The present application aims to at least solve one of the technical problems in the related art to some extent. To this end, the embodiments of the present application propose a tail rope swing suppression device for a vertical shaft type multi-rope friction hoist, which is simple in structure, convenient to install, strong in practicability, can adaptively adjust the damping size according to the swing amplitude of the tail rope, and effectively suppresses the swing of the tail rope.

[0007] The tail rope swing suppression device for the vertical shaft type multi-rope friction hoist according to the embodiment of the present application comprises: a base, which has a lower moving platform and an upper support platform; a first damping mechanism, which is arranged on the lower moving platform along a first preset direction; a second damping mechanism, which is arranged on the upper support platform along a second preset direction; a lower roller assembly, which cooperates with the first damping mechanism and can move on the lower moving platform along the first preset direction; and an upper roller assembly, which cooperates with the second damping mechanism and can move on the upper support platform along the second preset direction, and the upper roller assembly and the lower roller assembly have a gap in the vertical direction for the tail rope to pass through.

[0008] By using the tail rope swing suppression device for the vertical shaft type multi-rope friction hoist according to the embodiment of the present application, the damping size can be adaptively adjusted according to the swing amplitude of the tail rope, the swing of the tail rope can be effectively suppressed, the impact caused by the swing of the tail rope can be slowed down, the occurrence of vicious accidents such as the entanglement of the tail rope can be avoided, and the stability and reliability of the hoist in operation can be ensured.

[0009] Optionally, the lower moving platform has two, which are arranged on the base in a spaced-apart manner along the second preset direction, the lower moving platform is a groove arranged on the base, the upper support platform has two, which are arranged on the base in a spaced-apart manner along the first preset direction, and the lower moving platform is arranged below the upper support platform.

[0010] Optionally, the lower roller assembly has a plurality of, each of which comprises a lower roller, the two ends of the lower roller are arranged in two lower bearing seats respectively, the bottom of the lower bearing seat is provided with a lower sliding block, the lower sliding block cooperates with a lower guide rail, each of the lower sliding blocks moves on the cooperated lower guide rail along the first preset direction, and the outer surface of the lower roller is sleeved with a lower sleeve.

[0011] Optionally, the first damping mechanism has a plurality of, each of which comprises a piston cylinder and a throttling piston rod, one end of the piston cylinder is arranged on the side wall of the lower moving platform, the inside of the piston cylinder is provided with the throttling piston rod, the other end of the throttling piston rod is connected with a fixed oil pipe, the fixed oil pipe is arranged on the side wall of the lower bearing seat, the inside of the throttling piston rod is a hollow oil cavity, the inside of the throttling piston rod is provided with a floating piston, and the end of the throttling piston rod close to the piston cylinder is provided with a long and narrow throttling hole along the radial direction of the throttling piston cylinder.

[0012] Optionally, the first damping mechanism further comprises a damping piston rod, an inner cylinder sleeve and an outer cylinder sleeve, one end of the damping piston rod is arranged on the sidewall of the lower moving platform, the other end of the damping piston rod extends into the inner cylinder sleeve, the outer cylinder sleeve is sleeved on the outer part of the inner cylinder sleeve, the outer cylinder sleeve and the inner cylinder sleeve are coaxially arranged, the other end of the outer cylinder sleeve and the inner cylinder sleeve are arranged on the sidewall of the lower bearing seat, a plurality of damping holes penetrating the cylinder wall of the inner cylinder sleeve are arranged on the cylinder wall of the inner cylinder sleeve away from the one end of the damping piston rod along the circumference of the inner cylinder sleeve, a connecting hole connected with the communication oil pipe is arranged on the cylinder wall of the outer cylinder sleeve away from the one end of the damping piston rod, the other end of the communication oil pipe is connected with the fixed oil pipe, and the piston cylinder and the damping piston rod are arranged spaced apart along the vertical direction.

[0013] Optionally, the first damping mechanism further comprises a spring guide rod and a lower spring, the outer surface of the spring guide rod is sleeved with the lower spring, the sidewall of the lower moving platform is provided with a guide hole, one end of the spring guide rod is arranged on the sidewall of the lower bearing seat, and the other end of the spring guide rod extends into the guide hole, and the spring guide rod and the damping piston rod are arranged spaced apart along the vertical direction.

[0014] Optionally, the first damping mechanism further comprises an oil storage tank and an oil conveying hose, the oil storage tank is connected with one end of the oil conveying hose, and the other end of the oil conveying hose is connected with the piston cylinder.

[0015] Optionally, the upper roller assembly comprises a plurality of upper roller assemblies, each of the upper roller assemblies comprises an upper roller and two upper bearing seats, two ends of the upper roller are arranged in the two upper bearing seats respectively, the upper bearing seat is connected with an upper sliding block, the upper sliding block is matched with an upper guide rail, the upper sliding block moves on the upper guide rail along the second preset direction, and the outer surface of the upper roller is sleeved with a lower sleeve.

[0016] Optionally, the first preset direction is consistent with each of a first horizontal direction and a horizontal transverse direction, the second preset direction is consistent with each of a second horizontal direction and a horizontal longitudinal direction, the second preset direction is perpendicular to the first preset direction, and the vertical direction is perpendicular to each of the first preset direction and the second preset direction.

[0017] Optionally, the second damping mechanism has a plurality of second damping mechanisms, each of which comprises a fixed protective shell, a composite damping block is arranged in the fixed protective shell, one end of the composite damping block is connected with the inner wall of the fixed protective shell, the other end is connected with a pressure bearing plate, the pressure bearing plate is connected with a pressure bearing plate guide cylinder, the pressure bearing plate guide cylinder is sleeved with a pressure bearing plate guide column inside, the pressure bearing plate guide column is connected with the side wall of the upper bearing seat, and the upper spring is arranged between the upper bearing seat and the inner wall of the fixed protective shell. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structural schematic diagram of a tail rope swing suppression device for a vertical shaft type multi-rope friction hoist according to an embodiment of the present application.

[0019] Figure 2 FIG. 2 is a structural schematic diagram of a base of a tail rope swing suppression device for a vertical shaft type multi-rope friction hoist according to an embodiment of the present application.

[0020] Figure 3 FIG. 3 is a structural schematic diagram of a first damping mechanism of a tail rope swing suppression device for a vertical shaft type multi-rope friction hoist according to an embodiment of the present application.

[0021] Figure 4 FIG. 4 is a structural schematic diagram of a second damping mechanism of a tail rope swing suppression device for a vertical shaft type multi-rope friction hoist according to an embodiment of the present application.

[0022] Figure 5 FIG. 5 is a structural schematic diagram of a lower roller assembly of a tail rope swing suppression device for a vertical shaft type multi-rope friction hoist according to an embodiment of the present application.

[0023] Figure 6 FIG. 6 is a structural schematic diagram of an upper roller assembly of a tail rope swing suppression device for a vertical shaft type multi-rope friction hoist according to an embodiment of the present application.

[0024] Reference signs:

[0025] A tail rope swing suppression device 800 for a vertical shaft type multi-rope friction hoist according to an embodiment of the present application;

[0026] Base 1; lower moving platform 101; upper support platform 102; column 103; rib plate 104; guide hole 105;

[0027] First damping mechanism 2; oil storage tank 201; oil delivery hose 202; fixed oil pipe 203; communication oil pipe 204; piston cylinder 211; throttling piston rod 212; throttling hole 213; floating piston 214; damping piston rod 221; inner cylinder sleeve 222; outer cylinder sleeve 223; damping hole 224; spring guide rod 231; lower spring 232;

[0028] Second damping mechanism 3; fixed protective shell 301; elastic block 302; damping block 303; pressure plate 304; pressure plate guide column 305; upper spring 306; rubber ring 307;

[0029] Lower idler assembly 4; lower bearing 401; lower idler 402; lower sleeve 403; lower guide rail 404; lower slider 405; lower bearing seat 406;

[0030] Upper idler assembly 5; upper bearing 501; upper idler 502; upper sleeve 503; upper guide rail 504; upper slider 505; upper bearing seat 506;

[0031] Tail rope 6. Detailed Implementation

[0032] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0033] like Figures 1-6 As shown, the tail rope sway suppression device 800 for a vertical shaft multi-rope friction hoist according to an embodiment of the present invention includes a base 1, a first damping mechanism 2, a second damping mechanism 3, a lower idler roller assembly 4, and an upper idler roller assembly 5. The base 1 has a lower moving platform 101 and an upper supporting platform 102; the first damping mechanism 2 is disposed on the lower moving platform 101 along a first preset direction; the second damping mechanism 3 is disposed on the upper supporting platform 102 along a second preset direction. In other words, the first damping mechanism 2 and the second damping mechanism 3 are not on the same platform, and the first damping mechanism 2 and the second damping mechanism 3 are disposed in different directions.

[0034] The lower idler assembly 4 cooperates with the first damping mechanism 2 and can move along the lower moving platform 101 in a first preset direction. That is, the lower idler assembly 4 can move on the lower moving platform 101 and will be resisted by the first damping mechanism 2, thereby suppressing the movement range of the lower idler assembly 4.

[0035] The upper idler assembly 5 cooperates with the second damping mechanism 3 and can move along the second preset direction on the upper support platform 102. That is, the upper idler assembly 5 can move on the upper support platform 102 and will be resisted by the second damping mechanism 3, thereby suppressing the movement range of the upper idler assembly 5.

[0036] There is a vertical gap between the upper idler assembly 5 and the lower idler assembly 4 for the tail rope 6 to pass through. The upper idler assembly 5 and the lower idler assembly 4 are not in the same plane, and there are multiple upper idler assemblies 5 and lower idler assemblies 4, forming a grid-like gap for the tail rope 6 to pass through. Therefore, the swinging of the tail rope 6 will cause the upper idler assembly 5 and the lower idler assembly 4 to move. At the same time, the first damping mechanism 2 will inhibit the movement of the lower idler assembly 4, and the second damping mechanism 3 will inhibit the movement of the upper idler assembly 5.

[0037] The following is for reference. Figures 1-6 The following is a brief description of the operation of the tail rope sway suppression device 800 for a vertical shaft multi-rope friction hoist according to an embodiment of the present invention. When the tail rope 6 sways along a first preset direction, it comes into contact with the lower idler roller assembly 4 and undergoes rolling friction. The lower idler roller assembly 4 is impacted and moves along the first preset direction. At this time, the movement of the lower idler roller assembly 4 is suppressed by the first damping mechanism 2, thereby reducing the moving distance of the lower idler roller assembly 4 and thus reducing the sway amplitude of the tail rope 6. When the tail rope 6 sways along a second preset direction, it undergoes rolling friction with the upper idler roller assembly 5. The upper idler roller assembly 5 is impacted and moves along the second preset direction. At this time, the movement of the upper idler roller assembly 5 is suppressed by the second damping mechanism 3, thereby reducing the moving distance of the upper idler roller assembly 5 and thus reducing the sway amplitude of the tail rope 6.

[0038] By utilizing the tail rope sway suppression device for a vertical shaft multi-rope friction hoist according to the embodiments of the present invention, the damping magnitude can be adaptively adjusted according to the sway amplitude of the tail rope, effectively suppressing the sway of the tail rope and mitigating the impact caused by the sway of the tail rope, thereby avoiding the occurrence of serious accidents such as tail rope tangling and ensuring the stability and reliability of the hoist during operation.

[0039] like Figures 1-6 As shown, the tail rope sway suppression device 800 for a vertical shaft multi-rope friction hoist according to an embodiment of the present invention includes a base 1, a first damping mechanism 2, a second damping mechanism 3, a lower idler roller assembly 4, and an upper idler roller assembly 5. The base 1 is installed on the guide beam at the bottom of the shaft, and is located above the rope dividing wood and the rope blocking wood. There are two lower moving platforms 101, which are spaced apart on the base 1 along a second preset direction, and each lower moving platform 101 is a groove on the base 1. The lower moving platform 101 serves as the mounting space for the first damping mechanism 2. There are two upper support platforms 102, which are spaced apart on the base 1 along a first preset direction, and the lower moving platforms 101 are located below the upper support platforms 102. The upper support platform 102 is the installation platform for the second damping mechanism 3. The lower surface of the upper support platform 102 is provided with three columns 103 and ribs 104 to strengthen the support of the upper support platform 102.

[0040] The first preset direction is consistent with each of the first horizontal direction and the horizontal transverse direction, the second preset direction is consistent with each of the second horizontal direction and the horizontal longitudinal direction, the second preset direction is perpendicular to the first preset direction, and the vertical direction is perpendicular to each of the first preset direction and the second preset direction.

[0041] As shown in Figure 1 and Figure 5 The lower layer roller assembly 4 is provided in multiple numbers, and optionally, the lower layer roller assembly 4 is provided in two numbers, each of the lower layer roller assembly 4 comprising a lower layer bearing 401, a lower layer roller 402, a lower layer sleeve 403, a lower layer guide rail 404, a lower layer sliding block 405 and a lower layer bearing seat 406. The lower layer sleeve 403 is a lower layer wear-resistant polyurethane sleeve. The two ends of the lower layer roller 402 are respectively arranged in the two lower layer bearing seats 406, and the two ends of the lower layer roller 402 are interference-connected with the lower layer bearing 401. The shaft shoulder and the lower layer bearing seat 406 can avoid the axial movement of the lower layer bearing 402. The lower layer roller 402 can rotate and roll around the central axis, changes the friction between the tail rope 6 and the contact surface thereof from sliding friction to rolling friction, reduces the friction coefficient therebetween, reduces the wear degree of the tail rope 6, prolongs the service life thereof, and the outer surface of the lower layer roller 402 is sleeved with the wear-resistant polyurethane sleeve, further reducing the wear of the tail rope 6. The bottom of the lower layer bearing seat 406 is provided with the lower layer sliding block 405, the lower layer sliding block 405 is matched with the lower layer guide rail 404, and the lower layer bearing seat 406 is connected with the lower layer sliding block 405 through bolts. When the tail rope 6 is horizontally and transversely swung and impacted, the lower layer roller 402 can reciprocate along the first preset direction on the lower layer guide rail 404 through the lower layer sliding block 405.

[0042] As shown in Figure 1 The first damping mechanism 2 is provided in multiple numbers, each of the lower layer roller assembly 4 is connected with two first damping mechanisms 2, that is, the two ends of each of the lower layer roller assembly 4 are respectively connected with one first damping mechanism 2. The lower layer bearing seat 406 of the lower layer roller assembly 4 is connected with the first damping mechanism 2.

[0043] As shown in Figure 3As shown, each first damping mechanism 2 comprises an oil tank 201, an oil delivery hose 202, a piston cylinder 211 and a throttle piston rod 212. The oil tank 201 is connected to one end of the oil delivery hose 202 to balance the pressure of oil flow; the other end of the oil delivery hose 202 is connected to the piston cylinder 211, one end of the piston cylinder 211, i.e. the bottom of the piston cylinder 211, is arranged on the side wall of the lower moving platform 101, the inside of the piston cylinder 211 is provided with the throttle piston rod 212, the other end of the throttle piston rod 212 is connected to a fixed oil pipe 203 arranged on the side wall of the lower bearing seat 406. The end of the piston cylinder 211 is provided with a cylinder cover seal, the inside of the piston cylinder 211 is divided into a rod gun and a rodless cavity by the throttle piston rod 212. The inside of the throttle piston rod 212 is a hollow oil cavity, the inside of the throttle piston rod 212 is provided with a floating piston 214, the floating piston 214 can move with the change of the relative oil pressure difference of both ends, and a narrow throttle hole 213 is arranged on the throttle piston rod 212 close to the end of the piston cylinder 211 along the radial direction of the throttle piston rod 212. The flow area of the throttle hole 213 is changed by the left and right movement of the floating piston 214, which plays a damping role.

[0044] Optionally, the first damping mechanism 2 further comprises a damping piston rod 221, an inner cylinder sleeve 222 and an outer cylinder sleeve 223, one end, i.e. the bottom, of the damping piston rod 221 is arranged on the side wall of the lower moving platform 101, the other end of the damping piston rod 221 extends into the inner cylinder sleeve 222, the outer cylinder sleeve 223 is sleeved on the outside of the inner cylinder sleeve 222, the outer cylinder sleeve 223 and the inner cylinder sleeve 222 are coaxially arranged, the other ends of the outer cylinder sleeve 223 and the inner cylinder sleeve 222 are arranged on the side wall of the lower bearing seat 406, a plurality of damping holes 224 penetrating the cylinder wall of the inner cylinder sleeve 222 are arranged on the cylinder wall of the inner cylinder sleeve 222 away from the end of the damping piston rod 221 along the circumferential direction of the inner cylinder sleeve 222. An oil injection hole is opened on the cylinder wall of the outer cylinder sleeve 223. A connecting hole connected to the communication oil pipe 204 is arranged on the cylinder wall of the outer cylinder sleeve 223 away from the end of the damping piston rod 221, the other end of the communication oil pipe 204 is connected to the fixed oil pipe 203 to form an oil passage. The left end of the outer cylinder sleeve 223 is provided with a cylinder wall mutation, a positioning check ring is installed, the outer cylinder sleeve 223 is divided into an oil cavity and a non-oil cavity, and plays a sealing and fixing role of the inner cylinder sleeve 222. A small hole is opened on the cylinder wall of the non-oil cavity of the outer cylinder sleeve 223 for balancing the pressure in the cylinder. The end of the outer cylinder sleeve 223 is provided with a cylinder cover for dust sealing.

[0045] Optionally, the first damping mechanism 2 further includes a spring guide rod 231 and a lower spring 232. The lower spring 232 is fitted onto the outer surface of the spring guide rod 231. The side wall of the lower moving platform 101 is provided with a guide hole 105. One end of the spring guide rod 231 is located on the side wall of the lower bearing seat 406, and the other end extends into the guide hole 105. When the tail rope 6 swings, the lower bearing seat 406 is subjected to an impact force and moves, the lower spring 232 is compressed, and the spring guide rod 231 extends into the guide hole 105. The first damping mechanism 2 provides a certain resistance to slow down the swing of the tail rope 6.

[0046] The piston cylinder 211, the damping piston rod 221, and the spring guide rod 231 are arranged at intervals along the vertical direction.

[0047] When the tail rope 6 swings excessively in the horizontal direction, the oil pressure is reduced through the damping hole 224 at the bottom of the inner cylinder liner 222, thus reducing the swing amplitude of the tail rope 6. Simultaneously, the pressure change of the oil at both ends of the floating piston 214 pushes the floating piston 214, changing the flow area of ​​the throttle orifice 213, thereby altering the oil flow speed and reducing the impact of the tail rope 6's swing. This achieves the function of adaptively adjusting resistance based on the swing amplitude and impact of the tail rope 6. The adaptive damping and spring are connected in parallel, forming a composite vibration isolation, damping, and control system, resulting in better damping performance and solving the problem of slow damping structure reset.

[0048] like Figure 1 and Figure 6 As shown, there are multiple upper idler roller assemblies 5, specifically six. Each upper idler roller assembly 5 includes an upper bearing 501, an upper idler roller 502, an upper sleeve 503, an upper guide rail 504, an upper slider 505, and an upper bearing housing 506. The upper sleeve 503 is an upper wear-resistant polyurethane sleeve. The two ends of the upper idler roller 502 are respectively located in two upper bearing housings 506. The two ends of the upper idler roller 502 are interference-fitted with the upper bearing 501. The shoulder and the upper bearing housing 506 prevent axial movement of the upper bearing 501. The upper idler roller 502 can rotate and roll around its central axis, changing the friction between the tail rope 6 and its contact surface from sliding friction to rolling friction, reducing the coefficient of friction between them, decreasing the wear of the tail rope 6, and extending its service life. The outer surface of the upper idler roller 502 is fitted with an upper wear-resistant polyurethane sleeve, further reducing the wear of the tail rope 6. The upper bearing seat 506 is connected to the upper slider 505 by bolts. The upper slider 505 cooperates with the upper guide rail 504. When the tail rope 6 is subjected to horizontal longitudinal swing impact, the upper roller 502 can move back and forth on the upper guide rail 504 along the second preset direction through the upper slider 505.

[0049] For the case that there are three tail ropes under the hoisting container, six upper layer roller assembly components are arranged independently, that is, each tail rope has one roller on each side to suppress the swing of the tail rope, so that the swing of each tail rope does not affect each other in the horizontal longitudinal direction, which not only eliminates the fatigue wear condition caused by sharing a single roller, but also enables the roller to reset in time after being impacted.

[0050] As shown in Figure 1 and Figure 4 , the second damping mechanism 3 has multiple, specifically, the second damping mechanism 3 has 12, one second damping mechanism 3 is arranged at each end of each upper layer roller assembly component 5, and the upper layer bearing seat 506 is connected with the second damping mechanism 3. The second damping mechanism 3 includes a fixed protective shell 301, a composite damping block, a pressure bearing plate 304, a pressure bearing plate guide cylinder, a pressure bearing plate guide column 305 and an upper layer spring 306. The fixed protective shell 301 is internally provided with the composite damping block, one end of the composite damping block is connected with the inner wall of the fixed protective shell 301, and the other end is connected with the pressure bearing plate 304, the pressure bearing plate 304 is connected with the pressure bearing plate guide cylinder, the pressure bearing plate guide cylinder is internally sleeved with the pressure bearing plate guide column 305, the end of the pressure bearing plate guide column 305 is connected with the side wall of the upper layer bearing seat 506, and the other side of the upper layer bearing seat 506 is connected with the inner wall of the fixed protective shell 301. The upper layer spring 306 is arranged between the fixed protective shell 301 and the upper layer bearing seat 506. The composite damping block includes two elastic blocks 302 and one damping block 303, the damping block 303 is located between the two elastic blocks 302, and a composite “sandwich” structure is formed. The composite damping block has the effects of absorbing impact and dissipating energy, and also has good impact resistance and vibration reduction performance. During the movement of the pressure bearing plate 304, the composite damping block is uniformly stressed, so that the reliability and stability of the vibration reduction performance are ensured. The pressure bearing plate guide column 305 is located in the pressure bearing plate guide cylinder and plays a guiding role. The inner side of the pressure bearing plate guide cylinder is provided with a rubber ring 307 at the bottom, which is used to prevent rigid impact between the pressure bearing plate guide cylinder and the pressure bearing plate guide column 305. The upper layer spring 306 is connected with the fixed protective shell 301 and the upper layer bearing seat 506 respectively, so that the composite damping block can reset quickly.

[0051] As shown in Figures 1-6 , the specific working steps of the tail rope swing suppression device 800 for the vertical shaft type multi-rope friction hoist according to the embodiment of the present application are as follows:

[0052] (1) Preliminary preparation and device installation: Sufficient hydraulic oil is injected into the first damping mechanism 2 through the oil injection holes of the oil storage tank 201, oil hose 202 and outer cylinder liner 223. The base 1 is installed on the tank beam. The lower layer of the base 1 is set higher than the rope dividing wood and the rope blocking wood to form a horizontal moving platform of the lower roller assembly 4. The tail rope 6 is located in the grid-shaped area formed by the upper roller assembly 5 and the lower roller assembly 4. A certain amount of slack is reserved between the upper roller 502, the lower roller 402 and the tail rope 6 to avoid the tail rope 6 from directly contacting the upper roller 502 and the lower roller 402 respectively and causing wear and wire breakage damage. One end of the upper spring 306 in the second damping mechanism 3 is set close to the tail rope.

[0053] (2) Horizontal lateral sway suppression: When the tail rope 6 sways horizontally, the tail rope 6 comes into contact with the lower idler roller 402 and rolls, causing the lower idler roller 402 and the lower bearing seat 406 to be impacted and move horizontally on the lower guide rail 404. The fixed oil pipe 203, inner cylinder liner 222 and outer cylinder liner 223 connected to the lower bearing seat 406 move accordingly. At the same time as the inner cylinder liner 222 and outer cylinder liner 223 move horizontally, the damping piston... With rod 221 fixed, relative motion occurs between the inner cylinder liner 222 and the outer cylinder liner 223. This reduces the volume of the inner cylinder liner 222, increasing the oil pressure. Oil flows through the damping hole 224 on the side wall of the inner cylinder liner 222 into the annular gap between the inner cylinder liner 222 and the outer cylinder liner 223, thus reducing the oil pressure. The swing amplitude of the tail rope 6 is suppressed and reduced. The oil is then forced into the connecting oil pipe 204 and the fixed oil pipe 203, and then into the hollow oil chamber of the throttle piston rod 212, pushing the throttle piston rod 212... The floating piston 214 in the empty oil chamber moves towards the throttle orifice 213 with lower oil pressure. The relative position of the floating piston 214 and the throttle orifice 213 changes, and the flow area of ​​the throttle orifice 213 decreases. This leads to an increase in the resistance to oil flow in the piston cylinder 211 and a decrease in flow velocity, thus reducing the swing speed of the tail rope 6. When the tail rope 6 swings with a small amplitude or swings to the other side, the amount of oil passing through the damping hole 224 of the inner cylinder liner 222 decreases. The pressure at both ends of the floating piston 214 changes, the flow area of ​​the throttle orifice 213 increases, and the flow resistance of the oil decreases accordingly, thereby achieving the function of adaptive damping adjustment with swing amplitude. The lower spring 232 in the adaptive damping parallel connection generates elastic resistance under pressure, which also has a certain buffering effect. When the tail rope 6 swings to the other side, the lower spring 232 causes the first damping mechanism 2 and the lower bearing seat 406 to reset in time, avoiding slow oil flow reset due to high viscosity.

[0054] (3) Horizontal longitudinal swing suppression: when the tail rope 6 swings horizontally, the tail rope 6 rolls with the upper layer roller 502, the upper layer roller 502 and the upper layer bearing seat 506 are impacted, and the upper layer guide rail 504 moves horizontally and longitudinally, the pressure plate guide column 305 fixed on the upper layer bearing seat 506 extends into the pressure plate guide cylinder 304, pushes the pressure plate 304 to compress the composite damping block, the composite damping block is compressed by the impact, absorbs and dissipates the impact energy, at the same time, the upper layer spring 306 connected with the upper layer bearing seat 506 is stretched to generate elastic resistance, so as to slow down the impact of the tail rope 6 and suppress the horizontal longitudinal swing of the tail rope 6, and the two upper layer springs 306 stretched can reset the damping composite material in time.

[0055] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0056] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0057] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected or can communicate with each other; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication or interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0058] In the present application, unless specifically stated and limited otherwise, a first feature "on" or "under" a second feature can be directly in contact with the second feature, or indirectly in contact with the second feature through an intermediate medium. Also, a first feature "over", "above" and "on top of" a second feature can be directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. A first feature "under", "below" and "underneath" a second feature can be directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0059] In the present application, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material or characteristic is included in at least one embodiment or example of the present application. In the specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the described specific features, structures, materials or characteristics can be combined in any suitable manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the specification and features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0060] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary, and cannot be construed as limiting the present application, and changes, modifications, replacements and variations of the above embodiments made by those skilled in the art are within the scope of the present application.

Claims

1. A tail rope sway suppression device for a vertical shaft multi-rope friction hoist, characterized in that, The utility model relates to a base with a lower layer moving platform and an upper layer supporting platform, a first damping mechanism arranged on the lower layer moving platform along a first preset direction, a second damping mechanism arranged on the upper layer supporting platform along a second preset direction, a lower layer roller assembly cooperating with the first damping mechanism and capable of moving on the lower layer moving platform along the first preset direction, and an upper layer roller assembly cooperating with the second damping mechanism and capable of moving on the upper layer supporting platform along the second preset direction, the upper layer roller assembly and the lower layer roller assembly having a gap in the vertical direction for the tail rope to pass through, the lower layer roller assembly having a plurality of lower layer rollers each arranged in two lower layer bearing seats at both ends, the bottom of the lower layer bearing seat being provided with a lower layer sliding block cooperating with a lower layer guide rail, each lower layer sliding block moving on the cooperating lower layer guide rail along the first preset direction, and the outer surface of the lower layer roller being provided with a lower layer sleeve. The first damping mechanism has a plurality of piston cylinders and throttle piston rods, one end of the piston cylinder being arranged on the side wall of the lower layer moving platform, the inside of the piston cylinder being provided with a throttle piston rod, the other end of the throttle piston rod being connected with a fixed oil pipe arranged on the side wall of the lower layer bearing seat, the inside of the throttle piston rod being a hollow oil cavity, the inside of the throttle piston rod being provided with a floating piston, and the end of the throttle piston rod close to the piston cylinder being provided with a long and narrow throttle hole along the radial direction of the throttle piston cylinder. The first damping mechanism further includes a damping piston rod, an inner cylinder sleeve and an outer cylinder sleeve, one end of the damping piston rod being arranged on the side wall of the lower layer moving platform, the other end of the damping piston rod extending into the inner cylinder sleeve, the outer part of the inner cylinder sleeve being provided with an outer cylinder sleeve, the outer cylinder sleeve and the inner cylinder sleeve being coaxially arranged, the other end of the outer cylinder sleeve and the inner cylinder sleeve being arranged on the side wall of the lower layer bearing seat, a plurality of damping holes penetrating the cylinder wall of the inner cylinder sleeve being arranged along the circumferential direction of the inner cylinder sleeve at the end of the inner cylinder sleeve away from the damping piston rod, a connecting hole connected with a communication oil pipe being arranged on the cylinder wall of the outer cylinder sleeve away from the damping piston rod, the other end of the communication oil pipe being connected with the fixed oil pipe, and the piston cylinder and the damping piston rod being arranged apart along the vertical direction. The lower layer moving platform has two lower layer moving platforms arranged apart along the second preset direction on the base, the lower layer moving platform being a groove arranged on the base, the upper layer supporting platform has two upper layer supporting platforms arranged apart along the first preset direction on the base, and the lower layer moving platform is arranged below the upper layer supporting platform. ​ ​ ​ ​ ​ ​ 2. The tail rope swing suppressing device for a vertical type multi-rope friction hoist according to claim 1, characterized by ​ 3. The tail rope swing suppressing device for a vertical type multi-rope friction hoist according to claim 1, characterized by The first damping mechanism further comprises a spring guide rod and a lower spring, an outer surface of the spring guide rod is sleeved with the lower spring, a side wall of the lower moving platform is provided with a guide hole, one end of the spring guide rod is arranged on a side wall of the lower bearing seat, the other end of the spring guide rod extends into the guide hole, and the spring guide rod is arranged in the vertical direction away from the damping piston rod.

4. The tail rope swing suppressing device for a vertical type multi-rope friction hoist according to claim 1, characterized by The first damping mechanism further comprises an oil storage tank and an oil conveying hose, the oil storage tank is connected with one end of the oil conveying hose, and the other end of the oil conveying hose is connected with the piston cylinder.

5. The tail rope swing suppressing device for a vertical type multi-rope friction hoist according to claim 1, characterized by The upper layer roller assembly comprises an upper layer roller and two upper layer bearing seats, two ends of the upper layer roller are arranged in the two upper layer bearing seats respectively, the upper layer bearing seat is connected with an upper layer sliding block, the upper layer sliding block is matched with an upper layer guide rail, the upper layer sliding block moves on the upper layer guide rail in the second preset direction, and an outer surface of the upper layer roller is sleeved with a lower layer sleeve.

6. The tail rope swing suppressing device for a vertical type multi-rope friction hoist according to claim 1, characterized by The first preset direction is consistent with each of the first horizontal direction and the horizontal transverse direction, the second preset direction is consistent with each of the second horizontal direction and the horizontal longitudinal direction, the second preset direction is perpendicular to the first preset direction, and the vertical direction is perpendicular to each of the first preset direction and the second preset direction.

7. The tail rope swing suppressing device for a vertical type multi-rope friction hoist according to claim 1, characterized by The second damping mechanism comprises a fixed protective shell, an inner wall of the fixed protective shell is provided with a composite damping block, one end of the composite damping block is connected with the inner wall of the fixed protective shell, the other end of the composite damping block is connected with a pressure bearing plate, the pressure bearing plate is connected with a pressure bearing plate guide cylinder, the pressure bearing plate guide cylinder is internally sleeved with a pressure bearing plate guide column, the pressure bearing plate guide column is connected with a side wall of the upper layer bearing seat, and the upper layer bearing seat and the inner wall of the fixed protective shell are provided with an upper layer spring.

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