Mine hoist and hovering control system

Abstract

The invention discloses a mine hoist and a hovering control system, and relates to the technical field of mine hoisting equipment.The mine hoist comprises a derrick and a traction unit, a hoisting container is arranged in the derrick in a sliding fit mode, and the traction unit comprises a hoisting wheel, a traction rope and a traction mechanism arranged outside; the lifting wheel is rotationally connected to the middle of the top face of the lifting container, a mounting base is arranged at the top of the derrick and is of a triangular structure, a guide wheel is rotationally connected to the bottom of the mounting base, a supporting wheel is rotationally connected to the top of the mounting base, and a guide wheel is rotationally connected to one side of the top of the derrick. The hovering stability and precision are effectively improved, multiple protection mechanisms are arranged, when a brake on the traction mechanism fails and top rushing, falling or rope breaking accidents occur, intervention can still be conducted in time, and the safety of workers is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of mine hoisting equipment, in particular to a mine hoist and a suspension control system. Background Art

[0002] Mine hoists play a vital role in mining operations. They are responsible for the vertical transportation of materials, mineral products and workers. Their performance and safety are directly related to the mine production efficiency and the life safety of operators.

[0003] A Chinese patent with application number 2021104371636 discloses an accidental fall deceleration structure for a mine hoist, which includes a mine and a hoist. A fall detection mechanism and a brake mechanism are provided inside the mine. Guide rails are longitudinally fixedly installed on both sides of the inner wall of the mine. The hoist is arranged between two groups of guide rails. Support frames are fixedly installed on both sides of the hoist, and a shell is fixedly installed above the support frame, and the shell and the guide rail are slidably connected. Gears are rotatably connected to the top of the two shells through brackets, and teeth are provided on the guide rails, and the gears are meshed with the teeth. The fall detection mechanism includes bevel gear 1, bevel gear 2, a hollow tube, a sliding rod, and an extension mechanism. Support rods are fixedly installed on both sides of the top of the hoist, and the hoist is rotatably connected to bevel gear 1 through the support rods. Hollow tubes are rotatably connected to both sides of the top of the hoist near the support rods. However, in actual use, due to the limited response speed and control accuracy of the braking system, it is difficult to stop accurately at the designated position, affecting the efficiency of material loading and unloading and the stability of personnel going up and down the well.

[0004] In addition, the mine hoist in the prior art only relies on the brake as a basic overwinding and overspeed protection device, and lacks sufficient redundant protection measures for complex fault conditions such as rope breakage and brake failure. Moreover, 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, and it is difficult to intervene in time when a rope breakage accident occurs. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the existing defects, provide a mine hoist and a hovering control system, effectively improve the stability and accuracy of hovering, and be equipped with multiple protection mechanisms. When the brake on the traction mechanism fails, timely intervention can still be made when a top collision, fall or rope break accident occurs, thereby ensuring the safety of the workers and effectively solving the problems in the background technology.

[0006] To achieve the above object, the present invention provides a technical solution: a mine hoist, comprising a derrick and a traction unit, wherein a hoisting container is slidably matched inside the derrick; The traction unit includes a lifting wheel, a traction rope and a traction mechanism arranged outside, the lifting wheel is rotatably connected to the middle of the top surface of the lifting container, a mounting seat is arranged on the top of the derrick, the mounting seat is a triangular structure, the bottom of the mounting seat is rotatably connected to a guide wheel, the top of the mounting seat is rotatably connected to a support wheel, and one side of the top of the derrick is rotatably connected to a guide wheel; A mounting frame is provided on the upper side of the derrick, one end of the traction rope is wound on an external traction mechanism, and the other end of the traction rope is successively passed around the top of the support 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.

[0007] Preferably, the derrick is a rectangular structure, guide rails are provided at the four internal corners of the derrick, the guide rails are T-shaped structures, an acceleration sensor is provided on the lifting container, and limiting guide wheels are provided at the four external corners of the lifting container through guide seats, and the limiting guide wheels cooperate with the side of the guide rails.

[0008] The present invention also provides a suspension control system for the mine hoist as described above, comprising an auxiliary unit arranged on a mounting frame and a locking unit arranged on the top of a lifting container, wherein the auxiliary unit comprises a support, the top of the support is rotatably connected to a rotating shaft, a reel is fixedly sleeved on the rotating shaft, a worm wheel is arranged at the end of the rotating shaft, and a worm is meshed at the bottom of the worm wheel; The locking unit comprises two correspondingly arranged frame seats and two symmetrically arranged side plates, the side surfaces of the side plates are provided with card slots, the two ends of the frame seats are respectively slidably penetrated by transmission seats, the ends of the transmission seats on both sides away from each other are respectively provided with card seats and arc seats, the ends of the card seats are respectively provided with friction blocks, and the opposite ends of the transmission seats on both sides are respectively provided with first wedge blocks and second wedge blocks; Hydraulic rods are disposed opposite to each other on both sides of the frame seat along the length direction, and a first wedge-shaped seat and a second wedge-shaped seat are respectively disposed at opposite ends of the hydraulic rods on both sides.

[0009] Further, the support is arranged on the mounting frame, the reel corresponds to the guide wheel, and the reel is fixedly connected to the end of the traction rope; The worm is rotatably connected to the mounting frame, and the end of the worm is transmission-connected to an auxiliary motor, which is arranged on the mounting frame.

[0010] Furthermore, positioning grooves are evenly opened on the side of the reel, a plug rod is slidably penetrated on the support, the plug rod corresponds to the position of the positioning groove, a hydraulic cylinder is provided on the mounting frame, and the output end of the hydraulic cylinder is fixedly connected to the end of the plug rod.

[0011] Furthermore, the two frame seats are symmetrically arranged on both sides of the top surface of the lifting container, the frame seat is a rectangular structure, and the two side panels are symmetrically arranged in the middle of both sides of the derrick.

[0012] Furthermore, the friction block corresponds to the side plate, a pressure sensor is provided between the arc seat and the transmission seat, the arc seat corresponds to the circumferential surface of the lifting wheel, and the first wedge block and the second wedge block are arranged alternately.

[0013] Furthermore, a return spring is sleeved on the transmission seat, and the first wedge-shaped seat and the second wedge-shaped seat correspond to the first wedge-shaped block and the second wedge-shaped block respectively.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. When the preset hovering position of the lifting container deviates and the card seat is located below the card slot, the present invention releases the positioning of the reel by the insertion rod, starts the auxiliary motor to make the reel reel up the traction rope, and realizes the lifting of the lifting container until the card seat corresponds to the card slot; when the card seat is located above the card slot, the positioning of the reel is released, and the auxiliary motor is used to unwind the traction rope by the reel, and the lifting container moves downward until the card seat corresponds to the card slot normally, thereby realizing compensation for the hovering error of the lifting container.

[0015] 2. When a top-impact accident occurs in the lifting container, the positioning of the drum is released, the auxiliary motor is started to unwind the drum, and the length of the unwinding traction rope offsets the length of the traction rope wound by the traction mechanism, thereby reducing the top-impacting speed of the lifting container. At the same time, the hydraulic rod is contracted to make the seat drive the friction block to tightly contact the side plate, further reducing the lifting speed of the lifting container, effectively reducing the damage to the staff caused by the top-impact.

[0016] 3. When the lifting container falls rapidly, the present invention utilizes the driving of the hydraulic rod to make the friction block contact with the side plate, thereby slowing down the falling speed of the lifting container, and then makes the second wedge block drive the arc seat to tightly contact with the outside of the traction rope, thereby increasing the friction between the traction rope, the arc seat and the lifting wheel, and further reducing the falling speed of the lifting container, and finally releases the positioning of the reel to reel up, and the lifting container is slowly lifted upward until the positions of the holder and the slot correspond, so that the holder and the slot engage, thereby locking the lifting container. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the shaft side structure of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 It is a schematic diagram of the local structure of the present invention; Figure 5For the present invention Figure 4 The enlarged structural diagram at B in the middle; Figure 6 This is a schematic diagram of the auxiliary unit structure of the present invention; Figure 7 It is a front view structural schematic diagram of the present invention.

[0018] In the figure: 1, derrick; 101, guide rail; 2, lifting container; 201, guide seat; 202, limit guide wheel; 3, traction unit; 301, lifting wheel; 302, mounting seat; 303, guide wheel; 304, support wheel; 305, guide wheel; 306, mounting frame; 307, traction rope; 4, auxiliary unit; 401, support; 402, rotating shaft; 403, reel; 404, worm wheel; 405, worm; 406, worm; 407, traction rope; 408, auxiliary unit; 409, support; 410, support; 411, support; 412, rotating shaft; 413, reel; 414, worm wheel; 415, worm; 416, worm; 417, worm; 418, worm; 419, worm; 420, worm; 421, worm; 422, worm; 423, worm; 424, worm; 425, worm; 426, worm; 427, worm; 428, worm; 429, worm; 430, worm; 431, worm; 432, worm; 433, worm; 434, worm; 435, worm; 436, worm; 437, worm; 438, worm; 439, worm; 440, worm; 441, worm; 442, worm; 443, worm; 444, worm; 445, worm; 446, worm; 447, worm; 448, worm; 449, worm; 450, worm; 6. Auxiliary motor; 407. Positioning slot; 408. Insert 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 seat; 509. Hydraulic rod; 510. First wedge seat; 511. Second wedge seat; 512. Side plate; 513. Clamping slot. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-7 The present invention provides a mine hoist, including a derrick 1 and a traction unit 3. The derrick 1 is a rectangular parallelepiped structure, which is arranged at the bottom of the mine, and the top of the derrick 1 extends out of the ground. Guide rails 101 are arranged at the four corners of the derrick 1, and the guide rails 101 are T-shaped structures. A lifting container 2 is slidably matched inside the derrick 1. An acceleration sensor is arranged on the lifting container 2. 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, so as to judge 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 the normal threshold range.

[0021] The four corners of the outside of the lifting container 2 are all provided with limiting guide wheels 202 through the guide seat 201. The limiting guide wheels 202 cooperate with the side of the guide rail 101. There are three groups of limiting guide wheels 202. The three groups of limiting guide wheels 202 respectively cooperate with the three side surfaces of the guide rail 101 of the T-shaped structure, so as to realize the stable sliding of the lifting container 2 and limit the lifting container 2 at the same time.

[0022] The traction unit 3 includes a lifting wheel 301, a traction rope 307 and a traction mechanism arranged outside. A disc brake is arranged on the traction mechanism. The lifting wheel 301 is rotatably connected to the middle of the top surface of the lifting container 2. The lifting wheel 301 is used to realize the connection between the traction rope 307 and the lifting container 2. A mounting seat 302 is provided on the top of the derrick 1. The mounting seat 302 is a triangular structure. The bottom of the mounting seat 302 is rotatably connected to a guide wheel 303, the top of the mounting seat 302 is rotatably connected to a support wheel 304, and one side of the top of the derrick 1 is rotatably connected to a guide wheel 305. The guide wheel 303, the support wheel 304 and the guide wheel 305 are all used for guiding and limiting the traction rope 307, and provide support for the traction rope 307.

[0023] A mounting frame 306 is provided on the upper side of the derrick 1, one end of the traction rope 307 is wound on the external traction mechanism, and the other end of the traction rope 307 is successively passed around the top of the support wheel 304, the outside of the guide wheel 303, the bottom of the lifting wheel 301 and the outside of the guide wheel 305 and fixed on the mounting frame 306.

[0024] The locking unit 5 includes two correspondingly arranged 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 rectangular parallelepiped structure. The two side plates 512 are symmetrically arranged at the middle of both sides of the derrick 1. A clamping groove 513 is opened on the side of the side plate 512. The two ends of the frame seat 501 are respectively slidably penetrated by a transmission seat 502. The ends of the transmission seats 502 on both sides that are away from each other are respectively provided with a clamping seat 503 and an arc seat 508. When the lifting container 2 is in normal working state, the arc seat 508 is infinitely close to the traction rope 307 in the lifting wheel 301 and the two do not contact each other, so as to detect whether the traction rope 307 is deformed and prevent the traction rope 307 from falling off from the lifting wheel 301. A reset spring 506 is sleeved on the transmission seat 502. The transmission seats 502 on both sides are sleeved with the reset spring 506 to realize the recovery of the transmission seats 502 on both sides. The pressure sensor is provided between the arc seat 508 and the transmission seat 502, and the pressure sensor is used to detect the pressure of the arc seat 508 on the transmission seat 502, so as to indirectly judge the pressure value of the arc seat 508. The arc seat 508 corresponds to the circumferential surface of the lifting wheel 301, and the opposite ends of the transmission seats 502 on both sides are respectively provided with a first wedge block 504 and a second wedge block 505, and the first wedge block 504 and the second wedge block 505 are arranged alternately. After the bottom of the lifting container 2 rises to the preset position on the ground, the slot 513 corresponds to the position of the slot 513. The hydraulic rod 509 is used to drive the first wedge seat 510 to contract, so that the first wedge seat 510 drives the first wedge block 504 to move horizontally, and the first wedge block 504 drives the transmission seat 502 to drive the slot 513 to move to one side of the slot 513, so that the slot 503 is inserted into the slot 513, thereby realizing the positioning of the lifting container 2.

[0025] Hydraulic rods 509 are oppositely provided on both sides of the frame seat 501 along the length direction, and the first wedge seat 510 and the second wedge seat 511 are respectively provided at the opposite ends of the hydraulic rods 509 on both sides. 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, and the horizontal movement of the transmission seats 502 on both sides is respectively realized through the inclined surface matching between the wedge seat and the wedge block. In the initial state, there is no contact between the first wedge seat 510 and the first wedge block 504, and the second wedge seat 511 and the second wedge block 505.

[0026] When in use, during the process of lifting the lifting container 2 from the bottom of the well to the ground, since one end of the traction rope 307 is fixed on the mounting frame 306, when the external traction mechanism reels in the traction rope 307, the traction rope 307 drives the lifting wheel 301 to move upward through the support wheel 304 and the guide wheel 303, so that the lifting container 2 is lifted. After the traction mechanism lifts the lifting container 2 to the preset position, the disc brake on the traction mechanism brakes the winch mechanism. At this time, the positions of the slot 513 and the holder 503 correspond. The hydraulic rod 509 on one side is started to drive the first wedge seat 510 to contract, and the first wedge block 504 drives the holder 503 to move toward the slot 513 through the transmission seat 502, so that the holder 503 is clamped in the slot 513, thereby realizing the positioning of the lifting container 2 and maintaining the stability of the lifting container 2, so that materials and staff can go up and down smoothly.

[0027] When the lifting container 2 needs to be lowered, the first wedge-shaped seat 510 is extended by extending the hydraulic rod 509, and the compressed return spring 506 is restored and extended, so that the seat 503 is retracted from the slot 513, and then the disc brake releases the brake on the winch mechanism, and the traction mechanism unwinds the traction rope 307, so that the lifting container 2 can be lowered, and the unwinding stops until the lifting container 2 descends to the bottom of the well, and the disc brake brakes the traction mechanism to allow materials or workers to go up and down.

[0028] During use, when the traction rope 307 is deformed or adhered with large volume impurities, the wear of the traction rope 307 will be accelerated and the service life will be shortened. When the deformed position or large volume impurities pass through the arc seat 508, it will cause the traction rope 307 to collide with the arc seat 508, resulting in increased force on the pressure sensor. When the pressure sensor detects that the pressure value is greater than the set pressure threshold, it actively determines that the traction rope 307 is deformed or adhered with large volume impurities. At this time, a warning message is sent to the external control terminal, and the entire machine is stopped for maintenance.

[0029] However, with long-term use, since the lifting and hovering accuracy of the lifting container 2 mainly depends on the winding and unwinding accuracy of the traction mechanism, as the parts wear, the hovering accuracy of the lifting container 2 after it is lifted to the ground decreases, resulting in the inability of the clamping seat 503 and the clamping slot 513 to cooperate and engage. In order to solve the above problem: The present invention also provides a hovering control system for use in the above-mentioned mine hoist, comprising an auxiliary unit 4 arranged on a mounting frame 306 and a locking unit 5 arranged on the top of the lifting container 2, wherein the auxiliary unit 4 comprises a support 401, wherein the support 401 is arranged on the mounting frame 306, wherein the top of the support 401 is rotatably connected to a rotating shaft 402, wherein a drum 403 is fixedly sleeved on the rotating shaft 402, wherein the drum 403 corresponds to the guide wheel 305, and wherein the drum 403 is fixedly connected to the end of the traction rope 307, wherein the rotation of the drum 403 can realize the winding and unwinding of the traction rope 307, and wherein the traction rope 307 is wound around the drum 403 in the initial state.

[0030] A worm wheel 404 is provided at the end of the rotating shaft 402, and a worm 405 is meshed at the bottom of the worm wheel 404. The worm 405 is rotatably connected to the mounting frame 306. The end of the worm 405 is transmission-connected to an auxiliary motor 406, and the auxiliary motor 406 is provided on the mounting frame 306. The auxiliary motor 406 drives the worm 405 to rotate, thereby realizing the rotation of the worm wheel 404, so as to realize the rotation of the reel 403, and utilizes the self-locking effect of the meshing between the worm 405 and the worm wheel 404 to prevent the reel 403 from rotating freely.

[0031] Positioning grooves 407 are evenly arranged on the side of the reel 403, and a plug rod 408 is slidably penetrated on the support 401, and the position of the plug rod 408 corresponds to the positioning groove 407. A hydraulic cylinder 409 is provided on the mounting frame 306, and the output end of the hydraulic cylinder 409 is fixedly connected to the end of the plug rod 408. When the reel 403 is in a stationary state, the positioning groove 407 corresponds to the plug rod 408. The hydraulic cylinder 409 is used to drive the plug rod 408 to extend, so that the plug rod 408 is in contact with the positioning groove 407, thereby realizing the positioning of the reel 403 and improving the tensile strength of the reel 403 against the traction rope 307. In the initial state, the plug rod 408 is in contact with the positioning groove 407.

[0032] A through-beam photoelectric sensor is provided between the lifting container 2 and the side plate 512 to detect whether the holder 503 and the slot 513 correspond to each other after the lifting container 2 is raised to the ground.

[0033] When in use, when the lifting container 2 is lifted to the ground and stops at the preset position, the photoelectric sensor is used to detect through the light emitter and the light receiver respectively arranged on the lifting container 2 and the side plate 512. When the light receiver never receives the light signal, it means that the preset position of the lifting container 2 has deviated, and at this time the card seat 503 never passes through the card slot 513, that is, the card seat 503 is located below the card slot 513. At this time, the hydraulic cylinder 409 is started to drive the insertion rod 408 to retract, and the insertion rod 408 is disengaged from the positioning groove 407, and then the auxiliary motor 406 is started to drive the worm 405 to rotate, and the winding is driven by the meshing with the worm wheel 404. The drum 403 rotates, causing the drum 403 to reel in the traction rope 307, and then the lifting container 2 moves slowly upward through the guide wheel 305 and the lifting wheel 301 until the reflected photoelectric sensor detects a light signal. At this time, the base 503 and the slot 513 are realigned, and the deviation error between the base 503 and the slot 513 can be compensated and corrected, thereby ensuring that in the subsequent use, the base 503 and the slot 513 correspond normally when the lifting container 2 is lifted to the preset position. After the compensation and correction is completed, the hydraulic cylinder 409 is used to drive the insertion rod 408 and the positioning slot 407 to re-contact and reposition the drum 403.

[0034] It should be noted that when the lifting container 2 is lifted to the ground and stops at the preset position, when the light receiver of the through-beam photoelectric sensor receives a short light signal, it means that the lifting height of the lifting container 2 is higher than the preset position, that is, the holder 503 is located above the slot 513. At this time, the hydraulic cylinder 409 releases the positioning of the reel 403 by the insertion rod 408, and then the auxiliary motor 406 is used to unwind the wound traction rope 307 by the reel 403 through the engagement of the worm gear 404 and the worm 405, so that the lifting container 2 moves downward until the through-beam photoelectric sensor continuously detects the light signal. At this time, the holder 503 corresponds to the slot 513 normally, and the reel 403 can be restored to the position again to achieve the correction of the suspended position of the lifting container 2.

[0035] Therefore, the present invention utilizes the coordinated linkage between the auxiliary unit 4 and the locking unit 5 to correct the hovering position of the lifting container 2 when the hovering accuracy of the lifting container 2 is reduced.

[0036] In addition, during the lifting process of the lifting container 2, when the external traction mechanism is out of control and the disc brake fails, the lifting container 2 will be lifted upward at a high speed, causing a top collision accident, threatening the personal safety of the staff, so the following improvements are made: A friction block 507 is disposed at the end of the holder 503 , and the position of the friction block 507 corresponds to that of the side plate 512 .

[0037] During the lifting process of the lifting container 2, the acceleration sensor on the lifting container 2 detects that the acceleration of the lifting container 2 reaches the set first acceleration threshold, and it can be judged that the lifting container 2 is in a state of upward acceleration, that is, a top collision accident occurs. At this time, the traction mechanism continues to reel in the traction rope 307 at a high speed, causing the lifting container 2 to move upward rapidly. After it is judged that the lifting container 2 has a top collision accident, the hydraulic cylinder 409 is used to retract the insertion rod 408 to release the positioning of the reel 403, and then the auxiliary motor 406 is started to rotate the reel 403 through the worm 405 and the worm gear 404, so that the reel 403 quickly hits the traction rope 307. The guide rope 307 is unwound, and the lifting wheel 301 acts as a movable pulley to offset the winding force of the external traction mechanism on the traction rope 307, thereby effectively reducing the speed of the lifting container 2 rushing upward. At the same time, the hydraulic rod 509 is started to drive the first wedge seat 510 on one side to contract, so that the first wedge block 504 drives the clamping seat 503 to move horizontally, so that the friction block 507 is tightly in contact with the side of the side plate 512, and the friction force between the friction block 507 and the side plate 512 is used to further reduce the lifting speed of the lifting container 2, thereby effectively protecting the staff in the lifting container 2 to prevent injuries.

[0038] Therefore, the present invention, through the cooperation between the auxiliary unit 4 and the locking unit 5, can effectively slow down the upward movement speed of the lifting container 2 when a top collision accident occurs in the lifting container 2, thereby protecting the staff and materials inside.

[0039] In addition, when the lifting container 2 breaks the rope or the traction mechanism loses control and falls, the workers in the lifting container 2 will fall quickly, threatening their lives. In order to solve the above problems: When the acceleration sensor detects that the downward acceleration of the lifting container 2 reaches the set second acceleration threshold, it is determined that the lifting container 2 is in a fast falling state. At this time, the hydraulic rod 509 is used to drive the first wedge seat 510 to contract, so that the first wedge block 504 drives the clamping seat 503 to move quickly toward the side plate 512, so that the friction block 507 quickly contacts the side of the side plate 512, and gradually slows down the descending speed of the lifting container 2. 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 seat 511 to contract quickly, so that the second wedge block 505 drives the arc seat 508 to move toward the inner circumferential surface of the lifting wheel 301. In this process, the arc surface of the arc seat 508 quickly contacts the outside of the traction rope 307, increasing the friction between the traction rope 307 and the arc seat 508 and the traction rope 307 and the lifting wheel 301. The pull rope 307 is pulled upward by the drum 403 to further reduce the falling speed of the lifting container 2, thereby realizing 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 fourth acceleration threshold (the fourth acceleration threshold is less than the third acceleration threshold), the hydraulic cylinder 409 is driven to disengage the insertion rod 408 from the positioning groove 407, and the auxiliary motor 406 is started at the same time. The worm 405 and the worm gear 404 are used to reel in the traction rope 307, so that the bottom of the lifting container 2 slowly moves upward to a position corresponding to the ground. At this time, the positions of the clamping seat 503 and the clamping groove 513 correspond to each other. The hydraulic rod 509 is contracted to make the first wedge-shaped seat 510 drive the clamping seat 503 to move horizontally, so that the clamping seat 503 and the clamping groove 513 are engaged, and the lifting container 2 is locked and positioned for subsequent maintenance and repair work.

[0040] Therefore, the present invention realizes the gradual deceleration of the lifting container 2 through the coordinated cooperation between the auxiliary unit 4 and the locking unit 5 when the lifting container 2 breaks the rope or falls out of control, thereby effectively protecting the staff in the lifting container 2.

[0041] It should be noted that when the lifting container 2 falls rapidly and the arc seat 508 contacts the outside of the traction rope 307, if the auxiliary unit 4 is directly used to emergency pull and brake the lifting container 2, the lifting container 2 will generate instantaneous ultra-high pulling force on the derrick 1 and the auxiliary unit 4, which will cause structural damage to the derrick 1 and the auxiliary unit 4 and cause the accident to expand. Therefore, it is necessary to use the above method to decelerate step by step.

[0042] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A mine hoist, comprising a derrick (1) and a traction unit (3), characterized in that: The derrick (1) is slidably fitted with a lifting container (2); The traction unit (3) comprises a lifting wheel (301), a traction rope (307) and a traction mechanism arranged outside, the lifting wheel (301) is rotatably connected to the middle of the top surface of the lifting container (2), a mounting seat (302) is provided on the top of the derrick (1), the mounting seat (302) is a triangular structure, the bottom of the mounting seat (302) is rotatably connected to a guide wheel (303), the top of the mounting seat (302) is rotatably connected to a support wheel (304), and one side of the top of the derrick (1) is rotatably connected to a guide wheel (305); A mounting frame (306) is provided on the upper side of the derrick (1); one end of the traction rope (307) is wound around an external traction mechanism; the other end of the traction rope (307) is passed around the top of the support wheel (304), the outside of the guide wheel (303), the bottom of the lifting wheel (301) and the outside of the guide wheel (305) in sequence and is fixed on the mounting frame (306).

2. The mine hoist according to claim 1, characterized in that: The derrick (1) is a rectangular parallelepiped structure, guide rails (101) are provided at the four internal corners of the derrick (1), the guide rails (101) are T-shaped structures, an acceleration sensor is provided on the lifting container (2), and limiting guide wheels (202) are provided at the four external corners of the lifting container (2) through guide seats (201), and the limiting guide wheels (202) cooperate with the side surfaces of the guide rails (101).

3. A suspension control system for a mine hoist as claimed in any one of claims 1 to 2, characterized in that: The auxiliary unit (4) comprises an auxiliary unit (4) arranged on a mounting frame (306) and a locking unit (5) arranged on the top of a lifting container (2), wherein the auxiliary unit (4) comprises a support (401), the top of the support (401) is rotatably connected to a rotating shaft (402), a reel (403) is fixedly sleeved on the rotating shaft (402), a worm gear (404) is arranged at the end of the rotating shaft (402), and a worm (405) is meshed at the bottom of the worm gear (404); The locking unit (5) comprises two correspondingly arranged frame seats (501) and two symmetrically arranged side plates (512), the side surfaces of the side plates (512) are provided with a clamping groove (513), the two ends of the frame seat (501) are respectively slidably penetrated by a transmission seat (502), the ends of the transmission seats (502) on both sides away from each other are respectively provided with a clamping seat (503) and an arc seat (508), the end of the clamping seat (503) is provided with a friction block (507), and the opposite ends of the transmission seats (502) on both sides are respectively provided with a first wedge block (504) and a second wedge block (505); Hydraulic rods (509) are disposed opposite to each other on both sides of the frame seat (501) along the length direction, and a first wedge-shaped seat (510) and a second wedge-shaped seat (511) are respectively disposed on opposite ends of the hydraulic rods (509) on both sides.

4. The hovering control system according to claim 3, characterized in that: The support (401) is arranged on the mounting frame (306), the reel (403) corresponds to the guide wheel (305), and the reel (403) is fixedly connected to the end of the traction rope (307); The worm (405) is rotatably connected to the mounting frame (306); the end of the worm (405) is transmission-connected to an auxiliary motor (406); and the auxiliary motor (406) is arranged on the mounting frame (306).

5. The hovering control system according to claim 3, characterized in that: Positioning grooves (407) are evenly arranged on the side of the reel (403), an insertion rod (408) is slidably penetrated on the support (401), the insertion rod (408) corresponds to the position of the positioning groove (407), a hydraulic cylinder (409) is provided on the mounting frame (306), and the output end of the hydraulic cylinder (409) is fixedly connected to the end of the insertion rod (408).

6. The hovering control system according to claim 3, characterized in that: 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 rectangular parallelepiped structure; and the two side plates (512) are symmetrically arranged in the middle of both sides of the derrick (1).

7. The hovering control system according to claim 3, characterized in that: The friction block (507) corresponds to the side plate (512) in position, a pressure sensor is provided between the arc seat (508) and the transmission seat (502), the arc seat (508) corresponds to the circumferential surface of the lifting wheel (301), and the first wedge block (504) and the second wedge block (505) are arranged alternately.

8. The hovering control system according to claim 3, characterized in that: A return spring (506) is sleeved on the transmission seat (502), and the first wedge-shaped seat (510) and the second wedge-shaped seat (511) respectively correspond to the first wedge-shaped block (504) and the second wedge-shaped block (505).

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