Hoisting machine for loading and unloading materials in underground coal mine

Abstract

The invention relates to the technical field of hoisting machines, and discloses a coal mine underground material loading and unloading hoisting machine which comprises a movable trolley, a first construction table is welded to the middle of the movable trolley, a material moving window is formed in the center of the first construction table in a penetrating mode, a winding assembly is arranged at the top of a second construction table, and a steel wire rope is wound around the winding assembly. A hook is fixedly mounted at the bottom end of the steel wire rope; a winding auxiliary part is arranged at the bottom of the winding assembly, and sliding door bearing assemblies are arranged at the bottoms of the left side and the right side of the first construction table. A speed reducer and a motor are matched to drive a driving shaft to rotate, a winding roller winds a steel wire rope, so that a hook and a material move upwards, after the steel wire rope is wound to a winding wheel I and a winding cone pulley, the material is suspended above a first construction table, the overall gravity center is located in a movable trolley, and the purpose of stable hoisting process is achieved; and the movable trolley can advance in the roadway, so that the carried materials can move in the roadway conveniently after the materials are hoisted.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting machines, and particularly to a hoisting machine for loading and unloading materials underground in coal mines. Background Art

[0002] During the process of coal mining, it is necessary to support the mined roadway. Since the top wall of the roadway is relatively high, a hoisting machine is required to hoist the support materials for convenient support construction. Generally, an electric hoist is arranged on a simple support to hoist the materials.

[0003] A Chinese patent with an application date of June 20, 2024, and a publication number of CN118359092B discloses a hoisting machine for loading and unloading materials underground in coal mines, including a base, a rear arm, a front arm, etc. A rotatable rear arm is installed under the base, and the end of the rear arm is rotatably connected to the front arm. A hook is provided at the bottom end of the front arm, and the hook can rotate relative to the front arm. A driving mechanism for driving the activities of the rear arm and the front arm is installed on the base. The driving mechanism includes a first connection seat, a hydraulic rod, a guide rail, etc. A first connection seat is fixedly installed on the base, a hydraulic rod is rotatably installed below the first connection seat, a guide rail is provided on the upper side of the rear arm, and a slidable movable block is installed on the guide rail. Through the cooperation of components such as the movable block, the movable frame, and the connecting rod, the front arm and the rear arm can be sequentially rotated clockwise and raised under the drive of the hydraulic rod, thereby realizing the hoisting of materials for convenient loading and unloading, effectively reducing the labor intensity of workers during the process of loading and unloading materials, and improving the loading and unloading efficiency.

[0004] In this technical solution, when hoisting materials, the front arm and the rear arm need to deflect relative to each other, and the centers of the materials, the front arm, and the rear arm are on the side of the support mechanism. When the weight of the materials is relatively large, it is easy to cause the hoisting machine to tip over; in addition, during the process of coal mining, the hoisting machine also needs to move along the roadway. Since the centers of gravity of the front arm and the rear arm are on the side of the support mechanism, it is not convenient for the hoisting machine to move in the roadway; thus, further improvements can be made. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a hoisting machine for loading and unloading materials underground in coal mines, which has the advantages of stable hoisting process and convenient movement in the roadway, and solves the problems of easy instability during hoisting and inconvenience in moving in the roadway.

[0006] To achieve the purpose of stable hoisting process and convenient movement in the roadway, the present invention provides the following technical solutions: A hoisting machine for loading and unloading materials underground in a coal mine, including a mobile trolley. A first construction platform is welded in the middle of the mobile trolley. A material transfer window is vertically opened at the center of the first construction platform. A second construction platform is arranged above the first construction platform and is welded inside the mobile trolley. A winding assembly is arranged on the top of the second construction platform. A steel wire rope is wound on the winding assembly. A hook is fixedly installed at the bottom end of the steel wire rope. A winding auxiliary is arranged at the bottom of the winding assembly. The steel wire rope is slidably connected through the winding auxiliary. Door moving bearing assemblies are arranged at the bottoms of the left and right sides of the first construction platform, and the door moving bearing assemblies are used to seal the material transfer window. Hydraulic driving members are arranged at the front and rear ends of the second construction platform, and the hydraulic driving members are used to drive the door moving bearing assemblies to move towards the material transfer window.

[0007] Preferably, the mobile trolley includes two inverted U-shaped frames distributed front and back. A reinforcement frame is welded between the middles of the two inverted U-shaped frames. The first construction platform is welded on the reinforcement frame. Traveling wheels are arranged at the bottom ends of the inverted U-shaped frames. Climbing ladders are fixedly installed on the left and right sides of the inverted U-shaped frames. An arch frame one is welded in the middle of the top of the reinforcement frame. An arch frame two is welded between the top of the arch frame one and the top wall of the inverted U-shaped frame. The number of the second construction platforms is two, and the second construction platforms are welded on the top of the arch frame one and are respectively located on the left and right sides of the arch frame two.

[0008] Preferably, an installation platform is welded between the bottoms of the two second construction platforms. Two support plates are welded on the top of the installation platform. The two support plates are distributed front and back. An avoidance groove is vertically opened on the top of the installation platform and between the two support plates. Sliding grooves are vertically opened on the top of the installation platform and on the opposite sides of the two support plates. The steel wire rope passes through the avoidance groove and the material transfer window.

[0009] Preferably, the winding assembly includes a speed reducer fixedly installed at the rear side of the arch frame two. The input end of the speed reducer is connected with a motor. The output end of the speed reducer is fixedly installed with a driving shaft. The driving shaft is rotatably connected through the two support plates. A winding roller is fixedly installed on the surface of the driving shaft. The winding roller is located between the two support plates. The steel wire rope is fixedly installed on the winding roller.

[0010] Preferably, the winding roller includes a rear retaining disc, a first winding wheel, a winding cone wheel, a second winding wheel, and a front retaining disc. The rear retaining disc, the first winding wheel, the winding cone wheel, the second winding wheel, and the front retaining disc are connected and fixedly installed on the driving shaft in sequence from the rear to the front. The diameter of the first winding wheel is larger than that of the second winding wheel. Limiting convex platforms are fixedly arranged in an array at the connecting edge of the winding cone wheel and the first winding wheel. The top end of the steel wire rope is fixedly installed on the circumferential surface of the rear end of the first winding wheel. The distance between adjacent two limiting convex platforms is equal to the diameter of the steel wire rope.

[0011] Preferably, the winding auxiliary member includes a guide rod and a rotating shaft. The guide rod is fixedly penetrated through the front side of the second arch frame. The rotating shaft is rotatably connected through the front side of the second arch frame. The guide rod and the rotating shaft are respectively located on the left and right sides below the driving shaft. A first gear is fixedly installed at the front end of the rotating shaft. The first gear meshes with a second gear. The second gear is fixedly installed on the front end of the driving shaft. The diameters of the first gear and the second gear are equal. A first threaded groove is formed in the rear half of the rotating shaft. A rope-passing plate is slidably connected to the guide rod. The rope-passing plate is threadedly connected to the first threaded groove. The rope-passing plate is slidably connected to the avoidance groove. The steel wire rope is slidably connected through the center of the rope-passing plate.

[0012] Preferably, the hydraulic driving member includes two first sliding seats. The two first sliding seats are respectively slidably connected to the two sliding grooves. Two groups of second threaded grooves are formed on the surface of the driving shaft. The two groups of second threaded grooves are respectively located on the front and rear sides of the winding roller, and the directions of the two second threaded grooves are opposite. The two first sliding seats are respectively threadedly connected to the second threaded grooves. The hydraulic driving member further includes two second sliding seats. The two second sliding seats are respectively located on the opposite sides of the two first sliding seats. The second sliding seats are slidably connected to the sliding grooves. Springs are fixedly installed on the upper halves of the opposite sides of the two second sliding seats. The ends of the springs away from the second sliding seats are fixedly installed on the second arch frame. Oil storage tanks are fixedly installed at the bottoms of the front and rear ends of the installation table. The oil storage tanks are located on the left side of the first sliding seats. A piston rod is slidably connected through one end of the oil storage tank close to the second sliding seat. A piston plate is fixedly installed at the end of the piston rod located inside the oil storage tank. A piston rod is fixedly installed at the end of the piston rod located outside the oil storage tank on the second sliding seat. A convex column is fixedly installed on the side of the piston plate close to the piston rod. A connecting pipe is fixedly installed on the side of the oil storage tank close to the second sliding seat. The other end of the connecting pipe is fixedly installed with a hydraulic cylinder. The hydraulic cylinder is fixedly installed at the bottom of the reinforcement frame. A sliding piston is slidably connected through the right end of the hydraulic cylinder.

[0013] Preferably, an extension rod is fixedly installed at the end of the piston plate away from the piston rod. A baffle is fixedly installed at the end of the extension rod away from the piston plate. The baffle extends horizontally to the right. The right end of the baffle is located between the bottoms of the two first sliding seats.

[0014] Preferably, the sliding door bearing assembly includes two mounting seats, which are respectively located below the left and right halves of the first construction table. At the top of each mounting seat, two sliding bars distributed front and back are fixedly installed. At the bottom of the front and rear ends of the reinforcement frame, sliding rails are fixedly installed, and the sliding bars are slidably connected to the bottom of the sliding rails; at both ends of the two mounting seats, rack plates are fixedly installed, and a third gear is meshed between the two rack plates on the front side and the two rack plates on the rear side. The third gear is rotatably connected to the bottom of the first construction table. Above each mounting seat, a support plate is provided, and the support plate is attached to the bottom of the first construction table. The length of the support plate is equal to the length of the material transfer window, and the width of the support plate is equal to half of the width of the material transfer window.

[0015] Preferably, at the top of the opposite sides of the two mounting seats, two outer rotating arms are hinged respectively. At the top of the opposite sides of the two mounting seats, two inner rotating arms are hinged respectively. The mounting seat and the support plate are hinged through the outer rotating arms and the inner rotating arms, and the two outer rotating arms and the two inner rotating arms are respectively hinged at the four corners of the bottom of the support plate; at the top end of each outer rotating arm, a pulley is rotatably connected. At the front and rear sides of each support plate, a hollow plate is provided, and the hollow plate is fixedly installed at the bottom of the first construction table. An L-shaped groove is penetrated through the hollow plate, and the pulley is slidably connected in the L-shaped groove.

[0016] Compared with the prior art, the present invention provides a hoisting machine for loading and unloading materials in coal mines, having the following beneficial effects: 1. For the hoisting machine for loading and unloading materials in coal mines, the driving shaft is driven to rotate by the cooperation of the reducer and the motor, and the winding roller winds the steel wire rope, so that the hook and the material move upward. When the steel wire rope is wound around the first winding wheel and the winding cone wheel, the material is suspended above the first construction table. After that, the driving shaft continues to rotate, and the steel wire rope is wound around the second winding wheel, and the hook and the material move upward for a short distance inside the first arch frame; thus, the suspended material is placed inside the mobile trolley, and the overall center of gravity is inside the mobile trolley, achieving the purpose of stable hoisting process. And the mobile trolley can travel in the roadway, facilitating the movement of the material in the roadway after hoisting the material. 2. For the hoisting machine for loading and unloading materials in coal mines, the sliding piston drives the right mounting seat to move leftward, and with the transmission of the rack plate and the third gear, drives the left mounting seat to move rightward; during this process, the pulley first slides along the horizontal part of the L-shaped groove. When the two support plates are attached to each other, the pulley slides to the corner of the L-shaped groove. After that, the pulley slides along the vertical part of the L-shaped groove, so that the two support plates are inserted into the material transfer window, sealing the material transfer window and supporting the material above the material transfer window at the same time; at this time, the rope or steel cable hung on the hook can be manually removed, and the material is placed on the platform composed of the first construction table and the support plate, thus achieving the purpose of facilitating the storage of the suspended material and facilitating subsequent construction. Description of the Drawings

[0017] Figure 1 This is a three-dimensional structure schematic diagram of a hoisting machine for loading and unloading materials underground in a coal mine proposed by the present invention; Figure 2 This is a three-dimensional structure schematic diagram of a moving trolley of a hoisting machine for loading and unloading materials underground in a coal mine proposed by the present invention; Figure 3 This is a three-dimensional structure schematic diagram of a first construction platform and a second construction platform of a hoisting machine for loading and unloading materials underground in a coal mine proposed by the present invention; Figure 4 This is a three-dimensional structure schematic diagram of a second construction platform and a winding assembly of a hoisting machine for loading and unloading materials underground in a coal mine proposed by the present invention; Figure 5 This is a three-dimensional structure schematic diagram of the hook of a hoisting machine for loading and unloading materials underground in a coal mine proposed by the present invention; Figure 6 This is a three-dimensional structure schematic diagram of a winding auxiliary assembly of a hoisting machine for loading and unloading materials underground in a coal mine proposed by the present invention; Figure 7 This is a three-dimensional structure schematic diagram of a hydraulic driving member of a hoisting machine for loading and unloading materials underground in a coal mine proposed by the present invention; Figure 8 This is a bottom view structure schematic diagram of a hydraulic driving member of a hoisting machine for loading and unloading materials underground in a coal mine proposed by the present invention; Figure 9 This is a three-dimensional exploded structure schematic diagram of a hydraulic driving member of a hoisting machine for loading and unloading materials underground in a coal mine proposed by the present invention; Figure 10 This is a three-dimensional structure schematic diagram of a first construction platform and a door moving and bearing assembly of a hoisting machine for loading and unloading materials underground in a coal mine proposed by the present invention; Figure 11 This is a three-dimensional exploded structure schematic diagram of a door moving and bearing assembly of a hoisting machine for loading and unloading materials underground in a coal mine proposed by the present invention; Figure 12 This is a three-dimensional structure schematic diagram of the pallet of a hoisting machine for loading and unloading materials underground in a coal mine proposed by the present invention.

[0018] In the figure: 100, moving trolley; 200, first construction platform; 300, second construction platform; 400, winding assembly; 500, steel wire rope; 600, hook; 700, winding auxiliary member; 800, hydraulic driving member; 900, door moving and bearing assembly; 101, inverted U-shaped frame; 102, reinforcement frame; 103, traveling wheel; 104, climbing ladder; 105, first arch frame; 106, second arch frame; 201, material transfer window; 301, installation platform; 302, support plate; 303, avoidance groove; 304, sliding groove; 401, Reducer; 402, Motor; 403, Drive shaft; 404, Rewinding roller; 4041, Rear retaining disc; 4042, First rewinding wheel; 4043, Rewinding cone pulley; 4044, Second rewinding wheel; 4045, Front retaining disc; 4046, Limit boss 601, Wing plate; 602, Cross bar; 603, Return winding spring 701, Guide rod; 702, Rotating shaft; 703, First gear; 704, Second gear; 705, Rope threading plate; 706, First thread groove 801, First sliding seat; 802, Second thread groove; 803, Second sliding seat; 804, Spring; 805, Oil storage tank; 806, Piston rod; 807, Piston plate; 808, Convex column; 809, Connecting pipe; 810, Hydraulic cylinder; 811, Sliding piston; 812, Extension rod; 813, Baffle 901, Mounting seat; 902, Slide bar; 903, Slide rail; 904, Rack plate; 905, Third gear; 906, Support plate; 907, Outer rotating arm; 908, Inner rotating arm; 909, Pulley; 910, Hollow plate; 911, L-shaped groove Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figure 1 , A hoisting machine for loading and unloading materials underground in a coal mine, including a mobile trolley 100, a first construction platform 200 is welded in the middle of the mobile trolley 100, a material transfer window 201 is penetrated and opened at the center of the first construction platform 200, a second construction platform 300 is arranged above the first construction platform 200, the second construction platform 300 is welded in the mobile trolley 100, a winding assembly 400 is arranged on the top of the second construction platform 300, a steel wire rope 500 is wound on the winding assembly 400, and a hook 600 is fixedly installed at the bottom end of the steel wire rope 500; a winding auxiliary part 700 is arranged at the bottom of the winding assembly 400, and the steel wire rope 500 is slidably connected through the winding auxiliary part 700. Moving door bearing assemblies 900 are arranged at the bottoms of the left and right sides of the first construction platform 200, and the moving door bearing assemblies 900 are used to seal the material transfer window 201. Hydraulic driving parts 800 are arranged at the front and rear ends of the second construction platform 300, and the hydraulic driving parts 800 are used to drive the moving door bearing assemblies 900 to move towards the material transfer window 201.

[0021] Please refer to Figures 2 - 3, the mobile trolley 100 includes two inverted U-shaped frames 101 distributed front and back. A reinforcement frame 102 is welded between the middle parts of the two inverted U-shaped frames 101. The first construction platform 200 is welded to the reinforcement frame 102. Traveling wheels 103 are provided at the bottom ends of the inverted U-shaped frames 101. Climbing ladders 104 are fixedly installed on both the left and right sides of the inverted U-shaped frames 101. In the middle of the top of the reinforcement frame 102, an arch frame 105 is welded. Between the top of the arch frame 105 and the top wall of the inverted U-shaped frame 101, an arch frame 106 is welded. The number of the second construction platforms 300 is two. The second construction platforms 300 are welded to the top of the arch frame 105, and the two second construction platforms 300 are respectively located on the left and right sides of the arch frame 106. The first construction platform 200 and the second construction platforms 300 are used to carry construction workers. Through the climbing ladder 104, it is convenient for construction workers to climb onto the first construction platform 200 and can climb from the first construction platform 200 to the second construction platforms 300.

[0022] Between the bottoms of the two second construction platforms 300, an installation platform 301 is welded. On the top of the installation platform 301, two support plates 302 are welded. The two support plates 302 are distributed front and back. A relief groove 303 is formed through the top of the installation platform 301 and between the two support plates 302. On the top of the installation platform 301 and on the opposite sides of the two support plates 302, chute grooves 304 are formed through. The steel wire rope 500 passes through the relief groove 303 and the material transfer window 201.

[0023] Please refer to Figure 4 and Figures 6 - 7 , the winding component 400 includes a reduction gearbox 401 fixedly installed at the rear side of the arch frame 106. The input end of the reduction gearbox 401 is connected to a motor 402. The output end of the reduction gearbox 401 is fixedly installed with a driving shaft 403. The driving shaft 403 is rotatably connected through the two support plates 302. On the surface of the driving shaft 403, a winding roller 404 is fixedly installed. The winding roller 404 is located between the two support plates 302. The steel wire rope 500 is fixedly installed on the winding roller 404. Through the cooperation of the reduction gearbox 401 and the motor 402 to drive the driving shaft 403 to rotate, the winding roller 404 winds or releases the steel wire rope 500.

[0024] The winding roller 404 includes a rear retaining disc 4041, a first winding wheel 4042, a winding cone wheel 4043, a second winding wheel 4044 and a front retaining disc 4045. The rear retaining disc 4041, the first winding wheel 4042, the winding cone wheel 4043, the second winding wheel 4044 and the front retaining disc 4045 are connected and fixedly installed on the driving shaft 403 in sequence from the rear to the front. The diameter of the first winding wheel 4042 is larger than the diameter of the second winding wheel 4044. At the connecting edge of the winding cone wheel 4043 and the first winding wheel 4042, limiting convex platforms 4046 are arrayed and fixed. The top end of the steel wire rope 500 is fixedly installed on the circumferential surface at the rear end of the first winding wheel 4042. The distance between two adjacent limiting convex platforms 4046 is equal to the diameter of the steel wire rope 500.

[0025] When the winding roller 404 rotates, the winding auxiliary 700 drives the steel wire rope 500 to move from back to front at the same time, so that the steel wire rope 500 is evenly wound on the surface of the winding roller 404. The steel wire rope 500 is blocked and limited by the rear retaining disc 4041 and the front retaining disc 4045 to prevent the steel wire rope 500 from falling off the winding roller 404. When the steel wire rope 500 is wound by the first winding wheel 4042, the lifting speed of the hook 600 is relatively fast; when the steel wire rope 500 is wound by the winding taper pulley 4043, the lifting speed of the hook 600 gradually decreases; when the steel wire rope 500 is wound by the second winding wheel 4044, the lifting speed of the hook 600 is relatively small.

[0026] After the steel wire rope 500 is wound around the first winding wheel 4042 and the winding taper pulley 4043, the hook 600 is relatively close to the bottom of the mounting table 301, and the material to be hoisted is above the first construction table 200 at this time; then when the second winding wheel 4044 winds the steel wire rope 500, the hook 600 and the material move upward a small distance. When the steel wire rope 500 transitions from the first winding wheel 4042 to the winding taper pulley 4043, the steel wire rope 500 is clamped and limited by the limiting boss 4046 to prevent the steel wire rope 500 wound on the first winding wheel 4042 from moving towards the winding taper pulley 40, resulting in the loosening of the wound steel wire rope 500.

[0027] Please refer to Figure 5 , wing plates 601 are rotatably connected to both sides of the top end of the hook 600, a cross bar 602 is fixedly installed between the other ends of the two wing plates 601, and a return coil spring 603 is arranged between the top end of the wing plate 601 and the hook 600. Due to the elasticity of the return coil spring 603, the cross bar 602 fits against the inner side of the bottom end of the hook 600. Thus, when the rope or cable for bundling the material is hung on the hook 600, the hook 600, the wing plates 601 and the cross bar 602 can form an annular structure to prevent the rope or cable from falling off.

[0028] Please refer to Figure 6, the rewinding auxiliary member 700 includes a guide rod 701 and a rotating shaft 702. The guide rod 701 is fixedly penetrated through the front side of the second arch frame 106, and the rotating shaft 702 is rotatably penetrated through the front side of the second arch frame 106. The guide rod 701 and the rotating shaft 702 are respectively located on the left and right sides below the driving shaft 403. A first gear 703 is fixedly installed at the front end of the rotating shaft 702. The first gear 703 meshes with a second gear 704. The second gear 704 is fixedly installed on the front end of the driving shaft 403. The first gear 703 and the second gear 704 have the same diameter. Thus, the driving shaft 403 and the rotating shaft 702 rotate in the same speed and in opposite directions. A first threaded groove 706 is formed in the rear half of the rotating shaft 702. A rope-passing plate 705 is slidably connected to the guide rod 701. The rope-passing plate 705 is threadedly connected to the first threaded groove 706. The rope-passing plate 705 is slidably connected to the avoidance groove 303. The steel wire rope 500 is slidably penetrated through the center of the rope-passing plate 705. Thus, while the driving shaft 403 and the winding roller 404 rotate to wind the steel wire rope 500, the rotating shaft 702 rotates synchronously, driving the rope-passing plate 705 to gradually move forward, so that the position of the steel wire rope 500 wound on the winding roller 404 moves forward continuously, and thus the steel wire rope 500 is evenly wound on the winding roller 404.

[0029] Please refer to Figures 7 - 10 , the hydraulic driving member 800 includes two first sliding seats 801. The two first sliding seats 801 are respectively slidably connected to the two sliding grooves 304. Two groups of second threaded grooves 802 are formed on the surface of the driving shaft 403. The two groups of second threaded grooves 802 are respectively located on the front and rear sides of the winding roller 404, and the directions of the two second threaded grooves 802 are opposite. The two first sliding seats 801 are respectively threadedly connected to the second threaded grooves 802. Thus, when the driving shaft 403 rotates, the two first sliding seats 801 move towards each other or move away from each other simultaneously.

[0030] The hydraulic driving member 800 further includes two second sliding seats 803. The two second sliding seats 803 are respectively located on the opposite sides of the two first sliding seats 801. The second sliding seats 803 are slidably connected to the sliding grooves 304. Springs 804 are fixedly installed on the upper halves of the opposite sides of the two second sliding seats 803. The ends of the springs 804 away from the second sliding seats 803 are fixedly installed on the second arch frame 106. Due to the elasticity of the springs 804, the second sliding seats 803 tend to move towards the support plate 302.

[0031] Please refer to Figures 8 - 10, fuel tanks 805 are fixedly installed at the bottoms of the front and rear ends of the installation platform 301. The fuel tanks 805 are located on the left side of the first sliding seat 801 to prevent the first sliding seat 801 from colliding with the fuel tanks 805 during the movement along the sliding groove 304. A piston rod 806 is slidably connected through one end of the fuel tank 805 close to the second sliding seat 803. One end of the piston rod 806 located inside the fuel tank 805 is fixedly installed with a piston plate 807. The piston plate 807 is slidably connected inside the fuel tank 805. One end of the piston rod 806 located outside the fuel tank 805 is fixedly installed on the second sliding seat 803; both opposite ends of the two fuel tanks 805 are open ends. The piston plate 807 and the fuel tank 805 enclose a sealed cavity, and the cavity is filled with hydraulic oil. When the first sliding seat 801 moves towards the second sliding seat 803, the first sliding seat 801 pushes the second sliding seat 803 to move, the spring 804 is compressed and contracted, and the piston rod 806 is pulled to move through the second sliding seat 803. The piston plate 807 slides inside the fuel tank 805 to squeeze the hydraulic oil inside the fuel tank 805.

[0032] A convex column 808 is fixedly installed on one side of the piston plate 807 close to the piston rod 806. A connecting pipe 809 is fixedly installed on the side of one end of the fuel tank 805 close to the second sliding seat 803. Through the setting of the convex column 808, when the convex column 808 fits on the inner wall of the fuel tank 805, a gap is reserved between the piston plate 807 and the inner wall of the fuel tank 805 to prevent the cavity enclosed by the piston plate 807 and the fuel tank 805 from disappearing. The other end of the connecting pipe 809 is fixedly installed with a hydraulic cylinder 810. The hydraulic cylinder 810 is fixedly installed at the bottom of the reinforcement frame 102. The bottom end of the connecting pipe 809 is connected to the right side surface of the right end of the hydraulic cylinder 810. A sliding piston 811 is slidably connected through the right end of the hydraulic cylinder 810.

[0033] One end of the piston plate 807 far from the piston rod 806 is fixedly installed with an extension rod 812. One end of the extension rod 812 far from the piston plate 807 is fixedly installed with a baffle 813. The baffle 813 extends horizontally to the right, and the right end of the baffle 813 is located between the bottoms of the two first sliding seats 801. When the second sliding seat 803 pulls the piston rod 806 to move and the piston plate 807 squeezes the hydraulic oil inside the fuel tank 805, the hydraulic oil inside the fuel tank 805 enters the inside of the hydraulic cylinder 810 through the connecting pipe 809 and drives the sliding piston 811 to slide to the left. When the first sliding seat 801 moves away from the second sliding seat 803, under the elastic action of the spring 804, the second sliding seat 803 moves towards the middle of the installation platform 301 for resetting. The piston plate 807 slides reversely inside the fuel tank 805, and the hydraulic oil inside the hydraulic cylinder 810 flows back to the inside of the fuel tank 805 through the connecting pipe 809. The right end of the sliding piston 811 is connected to the door carrying assembly 900. Due to the resistance exerted by the door carrying assembly 900 on the sliding piston 811, it is difficult for the spring 804 to reset to the free state under its own elastic action.

[0034] When the first sliding seat 801 moves to the baffle 813, the first sliding seat 801 pushes the baffle 813 to move towards the middle of the mounting table 301, driving the piston plate 807 to slide in the oil storage tank 805, causing the hydraulic oil in the hydraulic cylinder 810 to flow back into the oil storage tank 805 again, so that the second sliding seat 803 continues to move towards the middle of the mounting table 301, and the chute 304 returns to the free state.

[0035] Please refer to Figures 10 - 12 , the door carrier assembly 900 includes two mounting seats 901 which are respectively located below the left and right halves of the first construction table 200, exposing the material transfer window 201, so that the materials hung by the hooks 600 can pass through the material transfer window 201 and move into the inside of the first arch 105. At the top of each mounting seat 901, two slide bars 902 distributed front and back are fixedly installed. At the bottom of the front and rear ends of the reinforcement frame 102, slide rails 903 are fixedly installed, and the slide bars 902 are slidably connected to the bottom of the slide rails 903; the cross-section of the slide bar 902 is T-shaped, so that the mounting seat 901 is stably suspended below the slide rail 903.

[0036] At both ends of the two mounting seats 901, rack plates 904 are fixedly installed. Between the two rack plates 904 on the front side and the two rack plates 904 on the rear side, a third gear 905 is engaged. The third gear 905 is rotatably connected to the bottom of the first construction table 200. Thus, through the transmission of the rack plate 904 and the third gear 905, the moving directions of the two mounting seats 901 are opposite. Above each mounting seat 901, a support plate 906 is provided. The support plate 906 is attached to the bottom of the first construction table 200. The length of the support plate 906 is equal to the length of the material transfer window 201, and the width of the support plate 906 is equal to half of the width of the material transfer window 201. The right end of the sliding piston 811 is fixedly installed on the right mounting seat 901. When the sliding piston 811 moves to the left, it pulls the right mounting seat 901 to move to the left. Cooperating with the transmission of the rack plate 904 and the third gear 905, the left mounting seat 901 moves to the right. When the two support plates 906 are in contact with each other, the material transfer window 201 is sealed and the materials in the third gear 905 are supported.

[0037] At the top of the opposite sides of the two mounting seats 901, two outer swing arms 907 are hinged respectively. At the top of the opposite sides of the two mounting seats 901, two inner swing arms 908 are hinged respectively. Between the mounting seat 901 and the support plate 906, they are hinged through the outer swing arms 907 and the inner swing arms 908, and the two outer swing arms 907 and the two inner swing arms 908 are respectively hinged at the four corners of the bottom of the support plate 906; at the top end of each outer swing arm 907, a pulley 909 is rotatably connected. On the front and rear sides of each support plate 906, a hollow plate 910 is provided. The hollow plate 910 is fixedly installed at the bottom of the first construction table 200. An L-shaped groove 911 is penetrated through the hollow plate 910, and the pulley 909 is slidably connected in the L-shaped groove 911.

[0038] Thus, during the process of the two mounting seats 901 moving towards each other, the pulley 909 first slides along the horizontal part of the L-shaped groove 911, and the support plate 906 moves horizontally. When the two support plates 906 are in contact with each other, the pulley 909 slides to the corner of the L-shaped groove 911. After that, the two mounting seats 901 continue to move towards each other, and the pulley 909 can only move along the vertical direction of the L-shaped groove 911, so that the outer rotating arm 907 and the inner rotating arm 908 deflect, and the support plate 906 moves upward. Thus, the two support plates 906 are inserted into the inside of the material transfer window 201, further sealing the material transfer window 201 and supporting the materials inside the first arch frame 105.

[0039] During use, first tie the materials with a rope or cable, and then hang the rope or cable on the hook 600. The reduction gear 401 and the motor 402 cooperate to drive the drive shaft 403 to rotate. The winding roller 404 winds the steel wire rope 500, so that the hook 600 and the materials move upward. When the steel wire rope 500 is wound around the first winding wheel 4042 and the winding cone wheel 4043, the materials are suspended above the first construction platform 200. After that, the drive shaft 403 continues to rotate, and the steel wire rope 500 is wound around the second winding wheel 4044, and the hook 600 and the materials move upward a short distance inside the first arch frame 105. During the rotation of the drive shaft 403, the two first sliding seats 801 move away from each other. After the materials are suspended above the first construction platform 200, the first sliding seat 801 fits on the surface of the second sliding seat 803 and pushes the second sliding seat 803 to slide along the sliding groove 304. The sliding groove 304 is squeezed and shrunk. The second sliding seat 803 pulls the piston plate 807 to slide inside the oil storage tank 805 through the piston rod 806. The hydraulic oil inside the oil storage tank 805 enters the inside of the hydraulic cylinder 810 through the connecting pipe 809. The hydraulic pressure inside the hydraulic cylinder 810 increases, so as to drive the sliding piston 811 to move leftward. The sliding piston 811 drives the right mounting seat 901 to move leftward, and with the transmission of the rack plate 904 and the third gear 905, drives the left mounting seat 901 to move rightward. During this process, the pulley 909 first slides along the horizontal part of the L-shaped groove 911. When the two support plates 906 are in contact with each other, the pulley 909 slides to the corner of the L-shaped groove 911. After that, the pulley 909 slides along the vertical part of the L-shaped groove 911, so that the two support plates 906 are inserted into the inside of the material transfer window 201, sealing the material transfer window 201 and supporting the materials above the material transfer window 201 at the same time. At this time, the rope or cable hung on the hook 600 can be manually removed, and the materials are placed on the platform composed of the first construction platform and the support plate 906.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hoisting machine for loading and unloading materials in a coal mine underground, comprising a mobile trolley (100), characterized in that: A first construction platform (200) is welded to the middle of the mobile trolley (100). A material transfer window (201) is formed through the center of the first construction platform (200). A second construction platform (300) is arranged above the first construction platform (200). The second construction platform (300) is welded inside the mobile trolley (100). A winding assembly (400) is arranged at the top of the second construction platform (300). A steel wire rope (500) is wound on the winding assembly (400). A hook (600) is fixedly installed at the bottom end of the steel wire rope (500). A winding auxiliary part (700) is arranged at the bottom of the winding assembly (400). The steel wire rope (500) is slidably connected through the winding auxiliary part (700). Door moving bearing assemblies (900) are arranged at the bottoms of the left and right sides of the first construction platform (200). The door moving bearing assemblies (900) are used to seal the material transfer window (201). Hydraulic driving parts (800) are arranged at the front and rear ends of the second construction platform (300). The hydraulic driving parts (800) are used to drive the door moving bearing assemblies (900) to move towards the material transfer window (201).

2. The material loading and unloading hoist for underground coal mines according to claim 1, characterized in that: The mobile trolley (100) includes two inverted U-shaped frames (101) distributed front and rear. A reinforcing frame (102) is welded between the middles of the two inverted U-shaped frames (101). The first construction platform (200) is welded to the reinforcing frame (102). Traveling wheels (103) are arranged at the bottom ends of the inverted U-shaped frames (101). Climbing ladders (104) are fixedly installed on the left and right sides of the inverted U-shaped frames (101). An arch frame one (105) is welded to the middle of the top of the reinforcing frame (102). An arch frame two (106) is welded between the top of the arch frame one (105) and the top wall of the inverted U-shaped frame (101). The number of the second construction platforms (300) is two. The second construction platforms (300) are welded to the top of the arch frame one (105), and the two second construction platforms (300) are respectively located on the left and right sides of the arch frame two (106).

3. The hoisting machine for loading and unloading materials underground in a coal mine according to claim 2, characterized in that: An installation platform (301) is welded between the bottoms of the two second construction platforms (300). Two support plates (302) are welded to the top of the installation platform (301). The two support plates (302) are distributed front and rear. An avoidance groove (303) is formed through the top of the installation platform (301) and between the two support plates (302). Sliding grooves (304) are formed through the top of the installation platform (301) and on the opposite sides of the two support plates (302). The steel wire rope (500) passes through the avoidance groove (303) and the material transfer window (201).

4. The material loading and unloading crane for underground coal mines according to claim 3, characterized in that: The winding component (400) includes a speed reducer (401) fixedly installed at the rear side of the second arch frame (106). The input end of the speed reducer (401) is connected to a motor (402). The output end of the speed reducer (401) is fixedly installed with a driving shaft (403). The driving shaft (403) passes through and is rotatably connected to two support plates (302). The surface of the driving shaft (403) is fixedly installed with a winding roller (404). The winding roller (404) is located between the two support plates (302). The steel wire rope (500) is fixedly installed on the winding roller (404).

5. The hoisting machine for loading and unloading materials underground in coal mines according to claim 4, wherein: The winding roller (404) includes a rear retaining disc (4041), a first winding wheel (4042), a winding cone wheel (4043), a second winding wheel (4044), and a front retaining disc (4045). The rear retaining disc (4041), the first winding wheel (4042), the winding cone wheel (4043), the second winding wheel (4044), and the front retaining disc (4045) are connected in sequence from the rear to the front and fixedly installed on the driving shaft (403). The diameter of the first winding wheel (4042) is larger than that of the second winding wheel (4044). The edge where the winding cone wheel (4043) is connected to the first winding wheel (4042) is fixedly installed with limiting bosses (4046) in an array. The top end of the steel wire rope (500) is fixedly installed on the circumferential surface at the rear end of the first winding wheel (4042). The distance between two adjacent limiting bosses (4046) is equal to the diameter of the steel wire rope (500).

6. The hoisting machine for loading and unloading materials underground in a coal mine according to claim 5, characterized in that: The winding auxiliary component (700) includes a guide rod (701) and a rotating shaft (702). The guide rod (701) passes through and is fixed on the front side of the second arch frame (106). The rotating shaft (702) passes through and is rotatably connected to the front side of the second arch frame (106). The guide rod (701) and the rotating shaft (702) are respectively located on the left and right sides below the driving shaft (403). The front end of the rotating shaft (702) is fixedly installed with a first gear (703). The first gear (703) meshes with a second gear (704). The second gear (704) is fixedly installed on the front end of the driving shaft (403). The diameters of the first gear (703) and the second gear (704) are equal; A first threaded groove (706) is formed in the rear half of the rotating shaft (702). A rope-passing plate (705) is slidably connected to the guide rod (701). The rope-passing plate (705) is threadedly connected to the first threaded groove (706). The rope-passing plate (705) is slidably connected to the avoidance groove (303). The steel wire rope (500) passes through and is slidably connected to the center of the rope-passing plate (705).

7. The hoisting machine for loading and unloading materials underground in a coal mine according to claim 6, characterized in that: The hydraulic driving component (800) includes two first sliding seats (801). The two first sliding seats (801) are respectively slidably connected to two sliding grooves (304). Two groups of second threaded grooves (802) are formed on the surface of the driving shaft (403). The two groups of second threaded grooves (802) are respectively located on the front and rear sides of the winding roller (404), and the directions of the two second threaded grooves (802) are opposite. The two first sliding seats (801) are respectively threadedly connected to the second threaded grooves (802); The hydraulic driving member (800) further includes two second sliders (803), the two second sliders (803) are respectively located on the opposite sides of the two first sliders (801), the second sliders (803) are slidably connected to the sliding grooves (304), springs (804) are fixedly installed on the upper halves of the opposite sides of the two second sliders (803), one ends of the springs (804) far from the second sliders (803) are fixedly installed on the second arch frames (106), fuel storage tanks (805) are fixedly installed at the bottoms of the front and rear ends of the installation platform (301), the fuel storage tanks (805) are located on the left side of the first sliders (801), a piston rod (806) is slidably connected through the end of the fuel storage tank (805) close to the second slider (803), a piston plate (807) is fixedly installed at the end of the piston rod (806) inside the fuel storage tank (805), and the end of the piston rod (806) outside the fuel storage tank (805) is fixedly installed on the second slider (803); A convex column (808) is fixedly installed on the side of the piston plate (807) close to the piston rod (806), a connecting pipe (809) is fixedly installed on the side of the fuel storage tank (805) close to the second slider (803), the other end of the connecting pipe (809) is fixedly installed with a hydraulic cylinder (810), the hydraulic cylinder (810) is fixedly installed at the bottom of the reinforcement frame (102), and a sliding piston (811) is slidably connected through the right end of the hydraulic cylinder (810).

8. The material loading and unloading hoist for underground coal mines according to claim 7, characterized in that: An extension rod (812) is fixedly installed at the end of the piston plate (807) far from the piston rod (806), a baffle (813) is fixedly installed at the end of the extension rod (812) far from the piston plate (807), the baffle (813) extends horizontally to the right, and the right end of the baffle (813) is located between the bottoms of the two first sliders (801).

9. The material loading and unloading hoist for underground coal mines according to claim 8, characterized in that: The door moving and carrying assembly (900) includes two mounting seats (901), the two mounting seats (901) are respectively located below the left and right halves of the first construction platform (200), two slide bars (902) distributed front and rear are fixedly installed at the top of each mounting seat (901), slide rails (903) are fixedly installed at the bottoms of the front and rear ends of the reinforcement frame (102), and the slide bars (902) are slidably connected to the bottoms of the slide rails (903); Rack plates (904) are fixedly installed at both ends of the two mounting seats (901), a third gear (905) is meshed between the two front rack plates (904) and the two rear rack plates (904), the third gear (905) is rotatably connected to the bottom of the first construction platform (200), a support plate (906) is arranged above each mounting seat (901), the support plate (906) is attached to the bottom of the first construction platform (200), the length of the support plate (906) is equal to the length of the material transfer window (201), and the width of the support plate (906) is equal to half of the width of the material transfer window (201).

10. The hoisting machine for loading and unloading materials underground in a coal mine according to claim 9, characterized in that: Two outer rotating arms (907) are hinged to the tops of the opposite sides of the two mounting seats (901), and two inner rotating arms (908) are hinged to the tops of the opposite sides of the two mounting seats (901). The mounting seats (901) and the support plate (906) are hinged through the outer rotating arms (907) and the inner rotating arms (908), and the two outer rotating arms (907) and the two inner rotating arms (908) are respectively hinged at the four corners of the bottom of the support plate (906); A pulley (909) is rotatably connected to the top end of each outer rotating arm (907). Hollow plates (910) are arranged on the front and rear sides of each support plate (906). The hollow plates (910) are fixedly installed at the bottom of the first construction platform (200). An L-shaped groove (911) is formed through the hollow plate (910), and the pulley (909) is slidably connected in the L-shaped groove (911).

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