Mine hoist and hover control system

Abstract

The application discloses a mine hoist and a hovering control system, relates to the technical field of mine hoisting equipment, and discloses the mine hoist which comprises a derrick and a traction unit. A hoisting container is slidably matched in the derrick. The traction unit comprises a hoisting wheel, a traction rope and a traction mechanism arranged outside. The hoisting wheel is rotationally connected to the middle part of the top surface of the hoisting container. The top of the derrick is provided with a mounting seat. The mounting seat has a triangular structure. A guide wheel is rotationally connected to the bottom of the mounting seat. A supporting wheel is rotationally connected to the top of the mounting seat. A guide wheel is rotationally connected to one side of the top of the derrick. The application effectively improves the stability and precision of hovering. Moreover, multiple protection mechanisms are arranged. When the brake on the traction mechanism fails, the application can still timely intervene in the event of a top collision, a downward falling or a rope breaking accident, thereby guaranteeing the safety of the staff.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mine hoisting equipment, in particular to a mine hoist and a hovering control system. BACKGROUND

[0002] The mine hoist plays a crucial role in mine operation, as it is responsible for the vertical transportation of materials, mine products, and personnel. Its performance and safety directly affect mine production efficiency and the safety of operating personnel.

[0003] A mine hoist accidental falling speed reduction structure is disclosed in Chinese patent application No. 2021104371636. The structure includes a mine, a hoist, a falling detection mechanism, and a brake mechanism inside the mine. The inside walls of the mine are longitudinally fixedly installed with guide rails on both sides. The hoist is arranged between the two groups of guide rails. The hoist is fixedly installed with support frames on both sides. The support frames are fixedly installed with housings above. The housings are slidingly connected with the guide rails. The two housings are rotatably connected with gears above through brackets. The guide rails are provided with gear slots. The gears are engaged with the gear slots. The falling detection mechanism includes bevel gears one and two, a hollow pipe, a sliding rod, and an extension mechanism. The hoist is rotatably connected with the bevel gears one through the support rods. The hoist is rotatably connected with the hollow pipes near the support rods on both sides of the top. However, in actual use, due to the limited response speed and control accuracy of the braking system, it is difficult to accurately stop at the specified position, affecting the material loading and unloading efficiency and the stability of personnel going up and down the well.

[0004] Moreover, the mine hoist in the prior art only relies on the basic over-winding and over-speed protection device of the brake. There is a lack of sufficient redundant protection measures for complex fault conditions such as rope breakage and brake failure. When the traction mechanism is out of control, once the main protection device fails, it is easy to cause serious accidents such as hitting the top or falling. It is difficult to intervene in time when a rope breakage accident occurs. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the existing defects and provide a mine hoist and a hovering control system that effectively improves the stability and precision of hovering and sets up multiple protection mechanisms. When the brake on the traction mechanism fails, it can still intervene in time when accidents such as hitting the top, falling, or rope breakage occur, ensuring the safety of personnel and effectively solving the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the present application provides a technical solution: a mine hoist, comprising a derrick and a traction unit, the inside of the derrick is slidingly fitted with a lifting container;

[0007] The traction unit comprises a lifting wheel, a traction rope and an external traction mechanism, the lifting wheel is rotationally connected in the middle of the top surface of the lifting container, the top of the derrick is provided with a mounting seat, the mounting seat is triangular, the bottom of the mounting seat is rotationally connected with a guide wheel, the top of the mounting seat is rotationally connected with a supporting wheel, and the top of the derrick is rotationally connected with a guide wheel on one side.

[0008] The upper side of the derrick is provided with a mounting frame, one end of the traction rope is wound on the external traction mechanism, and the other end of the traction rope is sequentially wound around the top of the supporting wheel, the outer side of the guide wheel, the bottom of the lifting wheel and the outer side of the guide wheel and fixed on the mounting frame.

[0009] Preferably, the derrick is a rectangular structure, the four corners of the inside of the derrick are provided with guide rails, the guide rails are T-shaped structures, the lifting container is provided with an acceleration sensor, and the four corners of the outside of the lifting container are provided with limiting guide wheels through guide bases.

[0010] The application also provides a hovering control system for the mine hoist, comprising an auxiliary unit provided on the mounting frame and a locking unit provided on the top of the lifting container, the auxiliary unit comprises a support, the top of the support is rotationally connected with a rotating shaft, the rotating shaft is fixedly sleeved with a winding drum, the end of the rotating shaft is provided with a worm gear, and the bottom of the worm gear is engaged with a worm.

[0011] The locking unit comprises two correspondingly arranged frame seats and two symmetrically arranged side plates, the side surface of the side plate is provided with a clamping groove, the two ends of the frame seat are respectively slidably penetrated through transmission seats, the ends of the transmission seats away from each other are respectively provided with a clamping seat and an arc-shaped seat, the end of the clamping seat is provided with a friction block, and the opposite ends of the transmission seats are respectively provided with a first wedge-shaped block and a second wedge-shaped block.

[0012] The opposite sides of the frame seat along the length direction are respectively provided with hydraulic rods, and the opposite ends of the hydraulic rods are respectively provided with a first wedge-shaped seat and a second wedge-shaped seat.

[0013] Further, the support is provided on the mounting frame, the winding drum corresponds to the guide wheel, and the winding drum is fixedly connected with the end of the traction rope.

[0014] The worm is rotationally connected on the mounting frame, the end of the worm is drivingly connected with an auxiliary motor, and the auxiliary motor is arranged on the mounting frame.

[0015] Further, the side surface of the winding drum is uniformly provided with a positioning groove, the support is slidably penetrated through a plug rod, the plug rod corresponds to the positioning groove in position, the mounting frame is provided with a hydraulic cylinder, and the output end of the hydraulic cylinder is fixedly connected with the end of the plug rod.

[0016] Further, two frame seats are symmetrically arranged on both sides of the top surface of the lifting container, and the frame seat is a cuboid structure.

[0017] Further, the friction block corresponds to the position of the side plate, the pressure sensor is arranged between the arc-shaped seat and the transmission seat, the arc-shaped seat corresponds to the circumferential surface of the lifting wheel, and the first wedge-shaped block and the second wedge-shaped block are staggered.

[0018] Further, the transmission seat is sleeved with a reset spring, and the first wedge-shaped seat and the second wedge-shaped seat correspondingly match the first wedge-shaped block and the second wedge-shaped block.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] 1. When the preset hovering position of the lifting container deviates and the clamping seat is below the clamping groove, the positioning of the winding drum by the insertion rod is released, the auxiliary motor is started to make the winding drum wind the traction rope, the lifting container is lifted, until the clamping seat corresponds to the clamping groove, the positioning of the winding drum is released, the auxiliary motor is used to make the winding drum unwind the traction rope, the lifting container moves downward, until the clamping seat corresponds to the clamping groove normally, the hovering error of the lifting container is compensated.

[0021] 2. When the lifting container has a top collision accident, the positioning of the winding drum is released, the auxiliary motor is started to make the winding drum unwind, and the length of the unwound traction rope offsets the length of the traction rope wound by the traction mechanism, so as to reduce the top collision speed of the lifting container, and the hydraulic rod is retracted to make the clamping seat drive the friction block to tightly abut against the side plate, so as to further reduce the lifting speed of the lifting container and effectively reduce the damage of the top collision to the workers.

[0022] 3. When the lifting container rapidly descends, the hydraulic rod is driven to make the friction block abut against the side plate, the descending speed of the lifting container is slowed down, the second wedge-shaped block drives the arc-shaped seat to tightly abut against the outside of the traction rope, the friction force between the traction rope, the arc-shaped seat and the lifting wheel is increased, the descending speed of the lifting container is reduced again, the positioning of the winding drum is released, the winding drum is wound, the lifting container is slowly lifted upward, until the clamping seat corresponds to the clamping groove, the clamping seat and the clamping groove are clamped, and the lifting container is locked. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present application;

[0024] Figure 2 It is a structural schematic diagram of the present application;

[0025] Figure 3 It is a structural schematic diagram of the present application; Figure 2

[0026] ​Figure 4 is a schematic view of a local structure of the present application;

[0027] Figure 5 is a schematic view of a local structure of the present application Figure 4

[0028] Figure 6 is a schematic view of an auxiliary unit structure of the present application;

[0029] Figure 7 is a schematic view of a front structure of the present application.

[0030] In the figure: 1, derrick; 101, guide rail; 2, lifting container; 201, guide base; 202, limiting guide wheel; 3, traction unit; 301, lifting wheel; 302, mounting seat; 303, guide wheel; 304, supporting wheel; 305, guide wheel; 306, mounting frame; 307, traction rope; 4, auxiliary unit; 401, support; 402, rotating shaft; 403, winding drum; 404, worm gear; 405, worm; 406, auxiliary motor; 407, positioning groove; 408, insertion rod; 409, hydraulic cylinder; 5, locking unit; 501, frame seat; 502, transmission seat; 503, clamping seat; 504, first wedge block; 505, second wedge block; 506, return spring; 507, friction block; 508, arc-shaped seat; 509, hydraulic rod; 510, first wedge seat; 511, second wedge seat; 512, side plate; 513, clamping groove. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0032] Please refer to Figures 1-7 The present application provides a mine hoist, which comprises a derrick 1 and a traction unit 3. The derrick 1 is a cuboid structure, and is arranged at the bottom of a mine. The top end of the derrick 1 extends out of the ground. The derrick 1 is internally provided with guide rails 101 at four corners. The guide rails 101 are T-shaped structures. A lifting container 2 is slidingly fitted in the derrick 1. The lifting container 2 is provided with an acceleration sensor. The acceleration sensor is used to detect the instantaneous acceleration of the lifting container 2, so as to detect the movement state of the lifting container 2 in the vertical direction, and to determine whether the lifting container 2 has a top collision or falling accident. In the normal slow lifting process of the lifting container 2, the acceleration detected by the acceleration sensor is within a normal threshold range.

[0033] ​The outer four corners of the lifting container 2 are provided with limiting guide wheels 202 through guide bases 201, the limiting guide wheels 202 are matched with the side surfaces of the guide rails 101, the limiting guide wheels 202 are provided with three groups, the three groups of limiting guide wheels 202 are respectively matched with the three side surfaces of the T-shaped guide rails 101, and the stable sliding of the lifting container 2 is realized while the lifting container 2 is limited.

[0034] The traction unit 3 comprises a lifting wheel 301, a traction rope 307 and an external traction mechanism, the traction mechanism is provided with a disc brake, the lifting wheel 301 is rotationally connected to the middle part of the top surface of the lifting container 2, the lifting wheel 301 is used for realizing the connection between the traction rope 307 and the lifting container 2, the top of the derrick 1 is provided with a mounting seat 302, the mounting seat 302 is a triangular structure, the bottom of the mounting seat 302 is rotationally connected with a guide wheel 303, the top of the mounting seat 302 is rotationally connected with a supporting wheel 304, one side of the top of the derrick 1 is rotationally connected with a guide wheel 305, and the guide wheel 303, the supporting wheel 304 and the guide wheel 305 are all used for guiding and limiting the traction rope 307 and providing support for the traction rope 307.

[0035] The upper side surface of the derrick 1 is provided with a mounting frame 306, one end of the traction rope 307 is wound on the external traction mechanism, and the other end of the traction rope 307 is sequentially wound around the top of the supporting wheel 304, the outer side of the guide wheel 303, the bottom of the lifting wheel 301 and the outer side of the guide wheel 305 and fixed on the mounting frame 306.

[0036] The locking unit 5 comprises two corresponding frame seats 501 and two symmetrically arranged side plates 512, the two frame seats 501 are symmetrically arranged on both sides of the top surface of the lifting container 2, the frame seat 501 is a cuboid structure, the two side plates 512 are symmetrically arranged at the middle part of the two sides of the derrick 1, the side surface of the side plate 512 is provided with a clamping groove 513, the two ends of the frame seat 501 are respectively slidably penetrated by a transmission seat 502, the transmission seats 502 on the two sides are respectively provided with a clamping seat 503 and an arc-shaped seat 508 at the end away from each other, in the normal working state of the lifting container 2, the arc-shaped seat 508 is close to the traction rope 307 in the lifting wheel 301 without contact, so as to detect whether the traction rope 307 is deformed, and prevent the traction rope 307 from falling out of the lifting wheel 301, the transmission seat 502 is sleeved with a return spring 506, the transmission seats 502 on the two sides are sleeved with the return spring 506, so as to realize the resetting of the transmission seats 502 on the two sides, a pressure sensor is arranged between the arc-shaped seat 508 and the transmission seat 502, the pressure sensor is used for detecting the pressure of the arc-shaped seat 508 on the transmission seat 502, so as to indirectly judge the pressure value of the arc-shaped seat 508, the arc-shaped seat 508 corresponds to the circumferential surface of the lifting wheel 301, the opposite ends of the transmission seats 502 on the two sides are respectively provided with a first wedge block 504 and a second wedge block 505, the first wedge block 504 and the second wedge block 505 are arranged alternately, after the bottom of the lifting container 2 is lifted to the ground to the preset position, the clamping groove 513 corresponds to the position of the clamping seat 503, the first wedge seat 510 is driven to shrink by using the hydraulic rod 509, so that the first wedge seat 510 drives the first wedge block 504 to move horizontally, the first wedge block 504 drives the transmission seat 502 to move the clamping seat 503 to one side of the clamping groove 513, so that the clamping seat 503 is inserted into the clamping groove 513, and the positioning of the lifting container 2 is realized.

[0037] The frame seat 501 is provided with a hydraulic rod 509 on both sides along the length direction, the opposite ends of the hydraulic rods 509 on the two sides are respectively provided with a first wedge seat 510 and a second wedge seat 511, the first wedge seat 510 and the second wedge seat 511 are respectively matched with the first wedge block 504 and the second wedge block 505, the inclined surfaces between the wedge seats and the wedge blocks are matched, so as to respectively realize the horizontal movement of the transmission seats 502 on the two sides, in the initial state, the first wedge seat 510 and the first wedge block 504, and the second wedge seat 511 and the second wedge block 505 are not in contact.

[0038] In use, during the process of lifting the container 2 from the bottom of the well to the ground, due to the fact that one end of the traction rope 307 is fixed on the mounting frame 306, when the external traction mechanism winds up the traction rope 307, the traction rope 307 drives the lifting wheel 301 to move upward through the supporting wheel 304 and the guide wheel 303, so that the container 2 is lifted, and after the traction mechanism lifts the container 2 to the preset position, the disc brake on the traction mechanism brakes the winding mechanism, at this time, the clamping groove 513 and the clamping seat 503 are in position correspondence, the hydraulic rod 509 on one side is started to drive the first wedge-shaped seat 510 to contract, and the first wedge-shaped block 504 drives the clamping seat 503 to move to the clamping groove 513 through the transmission seat 502, so that the clamping seat 503 is clamped in the clamping groove 513, the positioning of the container 2 is realized, the stability of the container 2 is maintained, and the materials and workers can smoothly go up and down.

[0039] When the container 2 needs to be lowered, first, the hydraulic rod 509 is elongated to drive the first wedge-shaped seat 510 to elongate, and the compressed reset spring 506 is reset to elongate, so that the clamping seat 503 is withdrawn from the clamping groove 513, and secondly, the disc brake is released from braking the winding mechanism, and at the same time, the traction mechanism is unwound on the traction rope 307, so that the container 2 is lowered until the container 2 is lowered to the bottom of the well to stop unwinding, the disc brake brakes the traction mechanism, and the materials or workers go up and down.

[0040] In the use process, when the traction rope 307 is deformed or adheres to large-volume impurities, the wear of the traction rope 307 will be accelerated, and the service life will be shortened, and the deformed position or large-volume impurities will cause the traction rope 307 to resist the arc-shaped seat 508, so that the stress of the pressure sensor increases, when the pressure sensor detects that the pressure value is greater than the set pressure threshold value, it is judged that the traction rope 307 is deformed or adheres to large-volume impurities, at this time, warning information is sent to the external control terminal, and the whole machine is stopped for maintenance.

[0041] However, with long-term use, since the lifting and suspension accuracy of the container 2 mainly depends on the winding and unwinding accuracy of the traction mechanism, with the wear of parts, the suspension accuracy of the container 2 after being lifted to the ground is reduced, so that the clamping seat 503 and the clamping groove 513 cannot be clamped, in order to solve the above problems:

[0042] The application further provides a hovering control system for the mine hoist, which comprises an auxiliary unit 4 arranged on the mounting frame 306 and a locking unit 5 arranged on the top of the lifting container 2, the auxiliary unit 4 comprises a support 401 arranged on the mounting frame 306, a rotating shaft 402 rotatably connected to the top of the support 401, a winding drum 403 fixedly sleeved on the rotating shaft 402, the winding drum 403 corresponding to the guide wheel 305, the winding drum 403 fixedly connected with the end of the traction rope 307, and the winding drum 403 being rotatable to realize winding and unwinding of the traction rope 307, and the traction rope 307 being wound on the winding drum 403 in an initial state.

[0043] The end of the rotating shaft 402 is provided with a worm wheel 404, the bottom of the worm wheel 404 is engaged with a worm 405, the worm 405 is rotatably connected to the mounting frame 306, the end of the worm 405 is drivingly connected with an auxiliary motor 406, the auxiliary motor 406 is arranged on the mounting frame 306, the auxiliary motor 406 drives the worm 405 to rotate, realizes rotation of the worm wheel 404, and realizes rotation of the winding drum 403, and the self-locking effect between the worm 405 and the worm wheel 404 is utilized to prevent free rotation of the winding drum 403.

[0044] The side surface of the winding drum 403 is uniformly provided with a positioning groove 407, the support 401 is slidably penetrated by a plug rod 408, the plug rod 408 corresponds to the positioning groove 407 in position, the mounting frame 306 is provided with a hydraulic cylinder 409, the output end of the hydraulic cylinder 409 is fixedly connected with the end of the plug rod 408, in the case that the winding drum 403 is in a static state, the positioning groove 407 corresponds to the plug rod 408, the plug rod 408 is driven by the hydraulic cylinder 409 to be elongated, so that the plug rod 408 abuts against the positioning groove 407, the winding drum 403 is positioned, the winding drum 403 resists the tensile strength of the traction rope 307, and the plug rod 408 abuts against the positioning groove 407 in the initial state.

[0045] The lifting container 2 and the side plate 512 are provided with a pair of photoelectric sensors to detect whether the clamping seat 503 and the clamping groove 513 correspond after the lifting container 2 is lifted to the ground.

[0046] In use, when the lifting container 2 is lifted to the ground and stopped at the preset position, at this time, the light receiver of the light barrier photoelectric sensor is always not receiving the light signal, which indicates that the preset position of the lifting container 2 has deviated, and at this time, the clamping seat 503 is always not passing through the clamping groove 513, that is, the clamping seat 503 is located below the clamping groove 513, at this time, the hydraulic cylinder 409 is started to drive the inserting rod 408 to retract, the inserting rod 408 is separated from the positioning groove 407, and then the auxiliary motor 406 is started to drive the worm 405 to rotate, the worm 405 drives the winding drum 403 to rotate through the meshing of the worm wheel 404, so that the winding drum 403 winds the traction rope 307, and then the guiding wheel 305 and the lifting wheel 301 make the lifting container 2 slowly move upward until the light barrier photoelectric sensor detects the light signal, at this time, the clamping seat 503 corresponds to the clamping groove 513 again, that is, the deviation error between the clamping seat 503 and the clamping groove 513 can be compensated and corrected, so that in the subsequent use process, the clamping seat 503 and the clamping groove 513 can normally correspond when the lifting container 2 is lifted to the preset position, and after the compensation and correction are completed, the inserting rod 408 and the positioning groove 407 are repositioned by the driving of the hydraulic cylinder 409.

[0047] It should be noted that, when the lifting container 2 is lifted to the ground and stopped at the preset position, at this time, the light receiver of the light barrier photoelectric sensor receives a short light signal, which indicates that the lifting height of the lifting container 2 is higher than the preset position, that is, the clamping seat 503 is located above the clamping groove 513, at this time, the positioning of the winding drum 403 by the inserting rod 408 is released by the hydraulic cylinder 409, and then the winding drum 403 unwinds the wound traction rope 307 by the meshing of the worm wheel 404 and the worm 405 through the auxiliary motor 406, so that the lifting container 2 moves downward until the light barrier photoelectric sensor continuously detects the light signal, at this time, the clamping seat 503 corresponds to the clamping groove 513 normally, and the winding drum 403 is repositioned again.

[0048] Therefore, the auxiliary unit 4 and the locking unit 5 are cooperatively linked to correct the hovering position of the lifting container 2 when the hovering precision of the lifting container 2 is reduced.

[0049] In addition, when the external traction mechanism is out of control and the disc brake fails during the lifting process of the lifting container 2, the lifting container 2 will be lifted upward at a high speed to cause a top collision accident, which threatens the personal safety of the workers, and therefore the following improvement is made:

[0050] The end of the clamping seat 503 is provided with a friction block 507, and the friction block 507 corresponds to the position of the side plate 512.

[0051] When the lifting container 2 is lifted, the acceleration sensor on the lifting container 2 detects that the acceleration of the lifting container 2 reaches the set first acceleration threshold value, that is, it is judged that the lifting container 2 is in the state of upward acceleration motion, that is, the top collision accident occurs, at this time, the traction mechanism high-speed continuously winds the traction rope 307, causing the lifting container 2 to move upward quickly, after judging that the lifting container 2 has the top collision accident, the inserting rod 408 is retracted by the hydraulic cylinder 409 to release the positioning of the winding drum 403, and then the auxiliary motor 406 is started to rotate the winding drum 403 through the worm 405 and the worm gear 404, so that the winding drum 403 quickly unwinds the traction rope 307, since the lifting wheel 301 acts as a dynamic pulley, the winding force of the external traction mechanism on the traction rope 307 is offset, so that the upward speed of the lifting container 2 is effectively reduced, at the same time, the first wedge-shaped block 504 drives the clamping seat 503 to move horizontally, so that the friction block 507 tightly abuts against the side surface of the side plate 512, the friction force between the friction block 507 and the side plate 512 is utilized to further reduce the lifting speed of the lifting container 2, and the workers in the lifting container 2 are effectively protected, so as to prevent injuries.

[0052] Therefore, through the cooperative matching between the auxiliary unit 4 and the locking unit 5, when the lifting container 2 has the top collision accident, the upward movement speed of the lifting container 2 is effectively slowed down, and the workers and materials in the lifting container 2 are protected.

[0053] In addition, when the lifting container 2 has the rope breaking or the traction mechanism out-of-control falling accident, the workers in the lifting container 2 will quickly fall down, threatening the life safety of the workers, in order to solve the above problems:

[0054] When the acceleration sensor detects that the downward acceleration of the lifting container 2 reaches the set second acceleration threshold, it is judged that the lifting container 2 is in a rapid falling state, at this time, the first wedge-shaped seat 510 is driven by the hydraulic rod 509 to contract, so that the first wedge-shaped block 504 drives the clamping seat 503 to move rapidly to the side plate 512, so that the friction block 507 is quickly in contact with the side of the side plate 512, and the falling speed of the lifting container 2 is gradually slowed down, when the acceleration sensor detects that the downward acceleration of the lifting container 2 is less than the set third acceleration threshold, the hydraulic rod 509 on the other side is started to drive the second wedge-shaped seat 511 to contract rapidly, so that the second wedge-shaped block 505 drives the arc-shaped seat 508 to move to the inner circumferential surface of the lifting wheel 301, in this process, the arc-shaped surface of the arc-shaped seat 508 is quickly in contact with the outside of the traction rope 307, the friction between the traction rope 307 and the arc-shaped seat 508 and the traction rope 307 and the lifting wheel 301 is increased, and at this time, the winding drum 403 provides upward pulling force to the lifting container 2 through the traction rope 307, further reducing the falling speed of the lifting container 2, so as to realize the step-by-step deceleration of the lifting container 2, when the acceleration sensor detects that the acceleration of the lifting container 2 reaches the set fourth acceleration threshold (the fourth acceleration threshold is less than the third acceleration threshold), at this time, the insertion rod 408 is driven by the hydraulic cylinder 409 to be separated from the positioning groove 407, and the auxiliary motor 406 is started, the winding drum 403 is wound on the traction rope 307 through the worm 405 and the worm gear 404, so that the bottom of the lifting container 2 slowly moves upward to the position corresponding to the ground, at this time, the clamping seat 503 and the clamping groove 513 are in position, the first wedge-shaped seat 510 is contracted to drive the clamping seat 503 to move horizontally, so that the clamping seat 503 and the clamping groove 513 are clamped, and the lifting container 2 is positioned and locked, so as to carry out subsequent maintenance work.

[0055] Therefore, through the cooperation between the auxiliary unit 4 and the locking unit 5, when the lifting container 2 breaks the rope or falls uncontrollably, the step-by-step deceleration of the lifting container 2 is realized, and the workers in the lifting container 2 are effectively protected.

[0056] It should be noted that when the lifting container 2 falls rapidly and the arc-shaped seat 508 is in contact with the outside of the traction rope 307, if the auxiliary unit 4 is directly used to pull the lifting container 2 for emergency braking, the lifting container 2 will generate a momentary super-high pulling force on the derrick 1 and the auxiliary unit 4, which will cause damage to the structure of the derrick 1 and the auxiliary unit 4, and will cause the accident to expand, therefore, the above-mentioned step-by-step deceleration is required.

[0057] The above-mentioned is only an embodiment of the present application, and does not limit the patent range of the present application, any equivalent structure or equivalent process transformation obtained by using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A hover control system for a mine hoist, characterized by The mine hoist comprises a headframe and a traction unit; the inside of the headframe is slidingly fitted with a hoisting container; the traction unit comprises a hoisting wheel, a traction rope and an external traction mechanism, the hoisting wheel is rotationally connected in the middle of the top surface of the hoisting container, the top of the headframe is provided with a mounting seat, the mounting seat is triangular in structure, the bottom of the mounting seat is rotationally connected with a guide wheel, the top of the mounting seat is rotationally connected with a support wheel, and the side of the top of the headframe is rotationally connected with a guide wheel; the upper side of the headframe is provided with a mounting frame, one end of the traction rope is wound on the external traction mechanism, and the other end of the traction rope is fixed on the mounting frame by sequentially passing through the top of the support wheel, the outside of the guide wheel, the bottom of the hoisting wheel and the outside of the guide wheel; The headframe is a cuboid structure, the inside of the headframe is provided with guide rails at the four corners, the guide rails are T-shaped in structure, the hoisting container is provided with an acceleration sensor, and the outside of the hoisting container is provided with limiting guide wheels at the four corners through guide bases, the limiting guide wheels are matched with the side surfaces of the guide rails; The hovering control system comprises an auxiliary unit provided on the mounting frame and a locking unit provided on the top of the hoisting container, the auxiliary unit comprises a support, the top of the support is rotationally connected with a rotating shaft, the rotating shaft is fixedly sleeved with a winding drum, the end of the rotating shaft is provided with a worm gear, and the bottom of the worm gear is engaged with a worm shaft; the locking unit comprises two correspondingly arranged frame seats and two symmetrically arranged side plates, the side surface of the side plate is provided with a clamping groove, the two ends of the frame seat are slidingly penetrated with transmission seats, the ends of the transmission seats away from each other are respectively provided with a clamping seat and an arc-shaped seat, the end of the clamping seat is provided with a friction block, and the opposite ends of the transmission seats are respectively provided with a first wedge-shaped block and a second wedge-shaped block; the two sides of the frame seat along the length direction are respectively provided with hydraulic rods, and the opposite ends of the hydraulic rods are respectively provided with a first wedge-shaped seat and a second wedge-shaped seat; When the acceleration sensor detects that the acceleration of the hoisting container reaches a first acceleration threshold, the hydraulic cylinder makes the inserting rod contract to release the positioning of the winding drum, the auxiliary motor drives the winding drum to rotate through the worm shaft and the worm gear, the winding drum rapidly unwinds the traction rope, the hydraulic rod drives the first wedge-shaped seat on one side to contract, the first wedge-shaped block drives the clamping seat to move horizontally, and the friction block tightly abuts against the side surface of the side plate; when the acceleration sensor detects that the downward acceleration of the hoisting container reaches a second acceleration threshold, the hydraulic rod drives the first wedge-shaped seat to contract, the first wedge-shaped block drives the clamping seat to rapidly move towards the side plate, the friction block rapidly abuts against the side surface of the side plate, the descending speed of the hoisting container is gradually slowed down, when the acceleration sensor detects that the downward acceleration of the hoisting container is less than a third acceleration threshold, the hydraulic rod on the other side is started to drive the second wedge-shaped seat to rapidly contract, the second wedge-shaped block drives the arc-shaped seat to move towards the inner circumferential surface of the hoisting wheel; The friction block corresponds to the position of the side plate, the pressure sensor is arranged between the arc-shaped seat and the transmission seat, the arc-shaped seat corresponds to the circumferential surface of the hoisting wheel, and the first wedge-shaped block and the second wedge-shaped block are staggered.

2. The hover control system of claim 1, wherein: The support is arranged on the mounting frame, the winding drum corresponds to the guide wheel, and the winding drum is fixedly connected with the end of the traction rope; the worm shaft is rotationally connected with the mounting frame, and the end of the worm shaft is drivingly connected with an auxiliary motor, and the auxiliary motor is arranged on the mounting frame.

3. The hover control system of claim 2, wherein: The side of the winding drum is uniformly provided with positioning grooves, the support is slidably penetrated by an inserting rod, the inserting rod corresponds to the positioning grooves in position, the mounting frame is provided with a hydraulic cylinder, and the output end of the hydraulic cylinder is fixedly connected with the end of the inserting rod.

4. The hover control system of claim 3, wherein: The two frame seats are symmetrically arranged on the top surface of the lifting container, and the frame seat has a cuboid structure.

5. The hover control system of claim 4, wherein: The transmission seat is sleeved with a reset spring, and the first wedge-shaped seat and the second wedge-shaped seat are correspondingly matched with the first wedge-shaped block and the second wedge-shaped block.

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