Mineral product lifting device and method for coal mining

Abstract

The invention relates to the technical field of mineral product mining equipment, and provides a mineral product lifting device for coal mining and a lifting method.The mineral product lifting device comprises a chassis, and the rear end of the top side of the chassis is connected with a moving seat through an electric guide rail so that the moving seat serving as a mounting platform can cooperate with mounted equipment for displacement; a motor serving as a power source of the mineral product lifting device is installed at the rear end of the top side of the movable base, a cooling pipe is arranged on the surface of an external shell of the motor in a surrounding mode, and cooling water flowing in the cooling pipe absorbs heat on the surface of the external shell of the motor to assist the motor in cooling. The purpose of cooling the motor is achieved through the cooling pipe surrounding the motor shell and the cooling water, the cooling water is recycled through the cooling circulation pipeline system, waste heat generated by the motor can be recycled for clear water heating, hot water is provided for miners to use in a gloomy and cold mode or clean equipment in winter, energy is fully utilized, and the energy consumption is reduced. And the mining overhead is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of mineral mining equipment, in particular to a mineral lifting device and a lifting method for coal mining. Background Art

[0002] Coal mines refer to places where coal mining activities are carried out. Coal is an important fossil fuel and is widely used in power generation, steel production, cement manufacturing, and as a chemical raw material. Coal mining is a complex engineering process that involves geological exploration, mine construction, coal mining, ventilation and drainage, safety assurance, and other aspects. Mine hoisting devices are key equipment for mine transportation. They are responsible for transporting minerals, personnel, materials, and equipment between the mine and the ground. There are two main types of hoists: single-rope winding type and multi-rope friction type. Single-rope winding hoists are suitable for shallow and medium-depth mines, while multi-rope friction hoists are suitable for hoisting work in deep and ultra-deep wells. The main components of the hoist include working mechanism, braking system, mechanical transmission system, lubrication system, observation and operation system, and drag, control and safety protection system.

[0003] The motor will generate high temperature when working. The mineral hoist is equipped with a motor as the driving source. Due to the heavy weight of the mineral and the need to lift it from deep to high, the power source of the mineral hoist requires a suitable large-sized motor to adapt to the work. The large motor requires a lot of electric energy to support the work, which further increases the heat generated during the operation of the motor. If the heat dissipation problem of the motor needs to be solved, it is generally necessary to install additional heat dissipation equipment, but this will increase the power consumption and increase the cost of mining. Therefore, it is necessary to adopt a mineral lifting device and lifting method for coal mining. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a mineral lifting device and a lifting method for coal mining, which solves the problem that during the coal mining process, a high-power motor is required as a driving source, resulting in large-volume high-power motors being inconvenient to dissipate heat.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] Mineral hoisting equipment for coal mining, including:

[0007] A chassis, wherein the rear end of the top side of the chassis is connected to a moving seat through an electric guide rail, so that the moving seat as a mounting platform can be displaced in coordination with the installed equipment, a motor as a power source of a mineral lifting device is installed at the rear end of the top side of the moving seat, a cooling pipe is arranged around the surface of the outer shell of the motor, and the cooling water flowing inside the cooling pipe absorbs the heat of the outer shell surface of the motor to assist in cooling the motor, a heat recovery tank is fixed to the rear end of the moving seat, the output end of the cooling pipe is connected to the heat recovery tank, and the heat recovery tank is used to recover waste heat, and a cooling unit is arranged between the input end of the cooling pipe and the output end of the heat recovery tank to cool the cooling water and re-enter the cooling cycle;

[0008] A retractable roller, the retractable roller is installed at the front end of the top side of the chassis, the outer wall of the retractable roller is sleeved with a plurality of traction rings, a frame is fixedly connected to the left side of the front end of the chassis, a plurality of rollers are rotatably connected to the top of the frame, a steel wire rope is arranged between the traction ring and the roller, one end of the steel wire rope is wound around the outer wall of the traction ring, the roller is in rolling contact with the rope body of the steel wire rope, and the other end of the steel wire rope is externally connected to a mineral container;

[0009] A speed changer for changing speed is installed at the front end of the top side of the moving seat, the rear end of the speed changer is connected to the driving end of the motor through a driving shaft, and the driving shaft synchronously drives the cooling unit to perform cooling work through a transmission component, and the front end of the speed changer is fixedly connected to a reinforced power shaft, and the front side of the reinforced power shaft is connected to the retractable roller through a bite component.

[0010] Preferably, the heat recovery tank includes an insulation kettle fixedly connected to the rear end of the movable seat, a water storage chamber is provided inside the insulation kettle, a spirally arranged heat exchange spiral tube is fixedly connected inside the water storage chamber, and the input end of the heat exchange spiral tube is connected to the output end of the cooling tube through a connecting tube.

[0011] Preferably, the cooling unit includes a heat dissipation tube group installed on the left end of the top side of the movable seat, the outer wall of the heat dissipation tube group is provided with a heat dissipation groove, the rear side of the heat dissipation tube group is provided with a water pump, the water pump is connected to the output end of the heat exchange spiral tube and the input end of the heat dissipation tube group through a connecting pipe, the output end of the heat dissipation tube group is connected to the input end of the cooling tube through a connecting pipe, and a fan blade housing is provided on the front side of the heat dissipation tube group, and the fan blade is rotatably connected to the inside of the fan blade housing.

[0012] Preferably, the transmission assembly includes two pulleys driven by a belt, wherein one of the pulleys is fixedly connected to the outer wall of the drive shaft, and the other pulley is fixedly connected to the front side of the fan blade.

[0013] Preferably, the retracting roller includes two rotating frames located at the front end of the top side of the chassis, the bottom side of the rotating frame at the rear end is fixedly connected to the chassis via a fixed seat, the bottom side of the rotating frame at the front end is connected to the chassis via a slide rail, the inner wall of the rotating frame is rotatably connected to a rotating wheel, the front side of the rotating wheel at the rear end is fixedly connected to a mounting shaft, and the traction ring and the rotating wheel at the front end are both mounted on the outer wall of the mounting shaft.

[0014] Preferably, the bite assembly includes two bite washers that bite and lock with each other, wherein one of the bite washers is fixedly connected to the front side of the reinforced power shaft, and the other bite washer is fixedly connected to the rear side of the rotating wheel at the rear end.

[0015] Preferably, gears are rotatably connected to the left and right sides of the fixed seat, rack 2 is fixedly connected to the left and right sides of the rotating frame at the front end, two rack 1s are fixedly connected to the front side of the movable seat, and the adjacent sides of rack 1 and rack 2 are meshed with gears.

[0016] Preferably, an oil injection channel is provided inside the rotating frame, a plurality of bearing wheels are rotatably connected inside the oil injection channel, and the outer periphery of the bearing wheel passes through the inner wall of the rotating frame and is in rolling contact with the outer periphery of the rotating wheel, and sealing plugs are provided at both openings of the oil injection channel.

[0017] Preferably, the outer peripheries of the traction ring and the roller are both provided with anti-slip protrusions.

[0018] A mineral lifting method for coal mining, comprising the following steps:

[0019] Step 1: Start the motor, the motor drives the drive shaft to rotate, and changes the speed through the speed changer, so that the output of the reinforced power shaft is suitable for the speed of lifting the mineral container, and the reinforced power shaft drives the retractable roller to rotate through the bite washer;

[0020] Step 2: The rotating retractable roller drives the traction ring to rotate synchronously, pulling the wire rope to reel it up, so that the mineral container connected to the wire rope rises. During the rise, the roller and the wire rope roll in contact to reduce resistance, and the rotating wheel rotates on the rotating frame through the internal bearing wheel to reduce resistance, thereby improving the working efficiency of the equipment;

[0021] Step 3: The heat generated by the motor is absorbed by the cooling water in the cooling pipe. The cooling water enters the cooling water circulation system under the action of the water pump, and the waste heat in the cooling water is transferred to the heat exchange spiral tube in the insulation kettle to heat the clean water in the insulation kettle to achieve heat energy recovery;

[0022] Step 4: The heat dissipation of the heat pipe group is accelerated by the fan blades driven by the drive shaft to cool the internal cooling water. After the heat is dissipated, the cooling water flows back into the cooling pipe to continue cooling the motor.

[0023] Working principle: When the mineral container for storing minerals is lifted, the driving shaft is driven by the motor to rotate, and the speed is changed by the speed changer connected to the driving shaft, so that the high-speed rotation is changed to a rotation speed more suitable for lifting the mineral container, and the output is made from the reinforced power shaft, so that the reinforced power shaft uses two interlocking interlocking washers to drive the rear end wheel to rotate, and the mounting shaft connected to the rear end wheel rotates synchronously, and drives the front end wheel and multiple traction rings sleeved on the outer wall of the mounting shaft to rotate, so that the traction ring pulls and pulls the wire rope to reel in the mineral container, and the mineral container connected to the wire rope begins to rise. During the process of the wire rope rising and displacement, the roller in rolling contact with it rotates synchronously under the friction generated by the displacement of the wire rope, reducing the resistance of the wire rope in the position used to offset the rope body to facilitate the wire rope to lift the mineral container. At the same time, during the rotation of the wheel on the rotating frame, it will roll in contact with the bearing wheel inside the rotating frame, reducing the resistance of the wheel on the rotating frame, thereby making the device work more labor-saving, thereby improving the lifting speed of the mineral container. The heat generated during the operation of the motor will be distributed on the shell, and the cooling pipe that fits tightly with the shell will share the heat and be taken away by the internal cooling water. The cooling water will be transported to the heat exchange spiral tube in the insulation kettle in the cooling water circulation pipeline system composed of a water pump as the power source, and the heat will be transferred to the clean water inside the insulation kettle through the heat exchange spiral tube, thereby heating the clean water and realizing heat recovery. The cooling water is pumped to the heat dissipation pipe group by the water pump under the traction of the water pump, and the heat is transferred to the surface of the heat dissipation pipe group. The pulley driven fan blade housing connected to the unvaried high-speed rotating drive shaft belt rotates, thereby accelerating the air flow speed on the rear side of the fan blade to take away the heat from the surface of the heat dissipation pipe group, dissipate the heat of the cooling water, and re-inject it into the cooling pipe to resume cooling.

[0024] The present invention provides a mineral lifting device and a lifting method for coal mining, which have the following beneficial effects:

[0025] 1. The present invention achieves the purpose of cooling the motor by means of a cooling pipe and cooling water surrounding the motor housing, and utilizes a cooling circulation pipeline system to circulate the cooling water, and can recover the waste heat generated by the motor for heating clean water, providing hot water for miners to use in the cold winter or for cleaning equipment, etc., thereby making full use of energy and reducing mining expenses.

[0026] 2. When performing maintenance, the present invention performs separate maintenance by first releasing the drive connection to the retractable roller and releasing the drive connection structure of the retractable roller, so as to ensure the safety of the maintenance work and avoid accidents of the drive structure. The restriction of the traction wheel can be released, and the wire rope and the traction wheel can be quickly inspected. When the wire rope and the traction wheel are found to be damaged, they can be quickly replaced.

[0027] 3. The anti-skid protrusions arranged on the outer periphery of the traction ring and the roller in the present invention and the design of the bearing wheel and the oil injection channel inside the rotating frame can reduce the resistance of the roller to the wire rope and the resistance of the rotating wheel on the rotating frame, making the device work more labor-saving, reducing the load on the power source and reducing losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A perspective view of the present invention;

[0029] Figure 2 It is a schematic diagram of the left structure of the present invention;

[0030] Figure 3 It is a schematic diagram of the connection structure of the speed changer of the present invention;

[0031] Figure 4 It is a schematic diagram of the internal structure of the heat preservation kettle of the present invention;

[0032] Figure 5 It is a schematic diagram of the position of the heat dissipation pipe group of the present invention;

[0033] Figure 6 It is a schematic diagram of the structure of the fan blade housing of the present invention;

[0034] Figure 7 It is a schematic diagram of the connection structure of the steel wire rope of the present invention;

[0035] Figure 8 It is a schematic diagram of the separation structure of two bite washers of the present invention;

[0036] Fig. 9 It is a structural schematic diagram of the mounting shaft body of the present invention;

[0037] Fig.10 It is a structural schematic diagram of the rotating frame of the present invention;

[0038] Fig.11 It is a schematic structural diagram of the traction wheel and the roller of the present invention.

[0039] Among them, 1. chassis; 2. electric guide rail; 3. moving seat; 4. motor; 5. speed changer; 6. drive shaft; 7. strengthened power shaft; 8. cooling pipe; 9. insulation kettle; 10. heat exchange spiral tube; 11. water pump; 12. heat dissipation pipe group; 13. fan blade housing; 14. fan blade; 15. pulley; 16. fixed seat; 17. slide rail; 18. rotating frame; 19. rotating wheel; 20. bite washer; 21. mounting shaft; 22. traction ring; 23. frame; 24. roller; 25. wire rope; 26. gear; 27. rack one; 28. rack two; 29. ​​bearing wheel; 30. oil injection channel. DETAILED DESCRIPTION

[0040] 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.

[0041] Example:

[0042] As one aspect of the present application, an embodiment of the present invention provides a mineral lifting device for coal mining, comprising:

[0043] Please see attached Figure 1 -Attached Figure 3 , chassis 1, the top rear end of the chassis 1 is connected to a moving seat 3 through an electric guide rail 2, so that the moving seat 3 as a mounting platform can be displaced in coordination with the installed equipment, and a motor 4 as a power source for a mineral lifting device is installed at the top rear end of the moving seat 3. A cooling pipe 8 is arranged around the surface of the outer shell of the motor 4. The cooling water flowing inside the cooling pipe 8 absorbs the heat of the outer shell surface of the motor 4 to assist the motor 4 in cooling down. A heat recovery tank is fixed to the rear end of the moving seat 3, and the output end of the cooling pipe 8 is connected to the heat recovery tank. The heat recovery tank is used to recover waste heat. A cooling unit is arranged between the input end of the cooling pipe 8 and the output end of the heat recovery tank to cool down the cooling water and re-enter the cooling cycle.

[0044] Please see attached Figure 4 -Attached Figure 6The heat recovery tank includes an insulation kettle 9 fixedly connected to the rear end of the mobile seat 3. A water storage chamber is arranged inside the insulation kettle 9. A pipe with a valve is arranged on the outer wall of the insulation kettle 9, from which water can be injected and discharged. A spiral heat exchange spiral tube 10 is fixedly connected to the inside of the water storage chamber. The spiral structure can prolong the retention time of cooling water in the insulation kettle 9 and further improve the heat exchange efficiency. The input end of the heat exchange spiral tube 10 is connected to the output end of the cooling pipe 8 through a connecting pipe. The clean water in the water storage chamber can be used for miners in winter after being heated. For use in cold seasons or cleaning equipment, the cooling unit is mainly composed of a heat dissipation tube group 12. The outer wall of the heat dissipation tube group 12 installed on the left end of the top side of the movable seat 3 is provided with a heat dissipation groove to expand the contact area between the heat dissipation tube group 12 and the outside. The water pump 11 arranged on the rear side of the heat dissipation tube group 12 is the power source for the cooling water circulation. The heat dissipation tube group 12, the heat exchange spiral tube 10 and a plurality of connecting tubes for connection constitute a cooling water circulation pipeline system, which is connected to the cooling tube 8 through the connecting tube so that the cooling water can be used continuously and participate in the cooling work. The output end of the heat exchange spiral tube 10 and the input end of the heat dissipation tube group 12 are connected to the input end of the cooling tube 8 through the connecting tube. The front side of the heat dissipation tube group 12 is provided with a fan blade housing 13, and the internal rotation of the fan blade housing 13 is connected to the fan blade 14. Two pulleys 15 are driven by belts, one of which is fixedly connected to the outer wall of the drive shaft 6, and the other is fixedly connected to the front side of the fan blade 14.

[0045] Specifically, due to the heavy weight of the minerals and the need to lift them from deep to high, the power source of the mineral hoist requires a suitable large-sized motor 4 to adapt to the work. The large-sized motor 4 requires a large amount of electric energy to support the work, so that the heat generated by the motor 4 during the operation will be distributed on the shell, and the cooling pipe 8 with excellent thermal conductivity that fits closely with the shell will share the heat, and the heat will be taken away by the internal cooling water. The cooling water is transported to the heat exchange spiral tube 10 in the insulation kettle 9 in the cooling water circulation pipeline system composed of a water pump 11 as a power source, and is then transported to the heat exchange spiral tube 10 in the insulation kettle 9 through The heat exchange spiral tube 10 transfers heat to the clean water inside the insulation kettle 9, thereby heating the clean water and realizing heat recovery. The cooling water is pumped to the heat dissipation tube group 12 by the water pump 11 under the traction of the water pump 11, and the heat is transferred to the surface of the heat dissipation tube group 12. The pulley 15 connected to the belt of the unvaried high-speed rotating drive shaft 6 drives the fan blades 14 in the fan blade housing 13 to rotate, so that the air flow speed behind the fan blades 14 is accelerated to take away the heat from the surface of the heat dissipation tube group 12, dissipate the heat of the cooling water, and re-inject it into the cooling tube 8 to resume cooling work.

[0046] Please refer to the attached Figure 7 -Attached Fig. 9, the retractable roller is mainly composed of a rotating frame 18, a rotating wheel 19 and a mounting shaft 21. The retractable roller is installed at the top front end of the chassis 1. The outer wall of the retractable roller is sleeved with multiple traction rings 22. The left side of the front end of the chassis 1 is fixedly connected with a frame 23. The top of the frame 23 is rotatably connected with multiple rollers 24 to form the lifting direction of the mineral container by traction wire rope 25. A wire rope 25 is arranged between the traction ring 22 and the roller 24. One end of the wire rope 25 is wound around the outer wall of the traction ring 22. The roller 24 is in rolling contact with the rope body of the wire rope 25. The other end of the wire rope 25 is externally connected to the mineral container. The container, the inner walls of the two rotating frames 18 located at the front end of the top side of the chassis 1 are rotatably connected with the rotating wheels 19, the bottom side of the rear rotating frame 18 is fixedly connected to the chassis 1 through the fixing seat 16, and the bottom side of the front rotating frame 18 is connected to the chassis 1 through the slide rail 17. The outer wall of the mounting shaft 21 fixedly connected to the front side of the rear rotating wheel 19 is provided with a plurality of strip-shaped protrusions, and the inner circumference of the inner wall of the traction ring 22 and the front rotating wheel 19 are both provided with grooves corresponding to the strip-shaped protrusions, so as to be sleeved on the outer wall of the mounting shaft 21, so as to synchronously drive the rotation of the traction ring 22 and the front rotating wheel 19 when the mounting shaft 21 rotates;

[0047] Please refer to the attached Figure 2 and attached Figure 3 A speed changer 5 for changing speed is installed at the front end of the top side of the moving seat 3. The rear end of the speed changer 5 is connected to the driving end of the motor 4 through a driving shaft 6. The front end of the speed changer 5 is fixedly connected with a reinforced power shaft 7. The reinforced power shaft 7 is reinforced with multiple layers to adapt to the torque force borne when driving the retractable roller to rotate and prevent breakage, thereby improving the stability and safety factor of mining work.

[0048] Please refer to the attached Figure 7 -Attached Fig. 9 , two mutually engaged and locked engagement washers 20, one of which is fixedly connected to the front side of the reinforcing power shaft 7, and the other is fixedly connected to the rear side of the rear end rotating wheel 19, the left and right sides of the fixed seat 16 are rotatably connected with gears 26, the left and right sides of the front end rotating frame 18 are fixedly connected with racks 28, and the front side of the moving seat 3 is fixedly connected with two racks 1 27, and the adjacent sides of the racks 1 27 and 28 are meshed with the gears 26;

[0049] Specifically, when it is necessary to maintain the retractable roller, the drive connection to the retractable roller is preferentially released, and the structure including the rear end engaging washer 20 connected to the top side of the movable seat 3 is displaced backwards by driving the electric guide rail 2, so that the two engaging washers 20 are separated, and then the drive connection structure of the retractable roller is released to inspect and maintain the drive connection structure to ensure the normal operation of the equipment. While the movable seat 3 is displaced backwards, it will synchronously drive the rack 1 27 connected thereto to displace backwards and engage the gear 26, so that the gear 26 engages with the gear 28 on the top side of the transmission to move forward, and synchronously drives the front end rotating frame 18 connected thereto to move forward along the slide rail 17, so that the rotating wheel 19 on the rotating frame 18 is separated from the mounting shaft 21, so as to inspect and maintain the wire rope 25 and the traction ring 22 wrapped around it. At this time, the traction ring 22 loses the obstruction of the front end rotating wheel 19, and the damaged wire rope 25 can be separated from the mounting shaft 21 together with the traction ring 22 according to needs at this time, and replaced.

[0050] Please see attached Fig.10 An oil filling channel 30 is provided inside the rotating frame 18. A plurality of bearing wheels 29 are rotatably connected inside the oil filling channel 30. The outer periphery of the bearing wheel 29 penetrates the inner wall of the rotating frame 18 and is in rolling contact with the outer periphery of the rotating wheel 19. Sealing plugs are provided at the two openings of the oil filling channel 30. When the rotating wheel 19 rotates on the rotating frame 18, it will be in rolling contact with the bearing wheel 29 inside the rotating frame 18, thereby reducing the resistance of the rotating wheel 19 on the rotating frame 18, thereby making the device work more labor-saving. Lubricating oil can be injected into the oil filling channel 30 to ensure smooth rotation of the internal bearing wheel 29. The sealing channel structure can also reduce the speed at which the lubricating oil dries up, prolong the service life of the lubricating oil, and reduce the injection frequency of the lubricating oil, thereby reducing the expenditure on the lubricating oil.

[0051] Please see attached Fig.11 The outer periphery of the traction ring 22 and the roller 24 are both provided with anti-skid protrusions. The anti-skid protrusions on the surface of the traction ring 22 are mainly used to increase the friction between the traction ring 22 and the steel wire rope 25 to prevent the steel wire rope 25 from slipping on the surface of the traction ring 22. The anti-skid protrusions on the surface of the roller 24 are to ensure that when the steel wire rope 25 is pulled and displaced, it is avoided that the resistance increases due to the friction on the surface of the roller 24. The anti-skid protrusions increase the force generated by the roller 24 when the steel wire rope 25 contacts with the roller 24 to make it rotate, thereby reducing the resistance of the roller 24 to the steel wire rope 25.

[0052] Based on the mineral lifting device for coal mining provided above, as another aspect of the present application, a mineral lifting method for coal mining includes the following steps:

[0053] Step 1: Start the motor 4, the motor 4 drives the drive shaft 6 to rotate, and changes the speed through the speed changer 5, so that the reinforced power shaft 7 outputs a speed suitable for lifting the mineral container, and the reinforced power shaft 7 drives the retractable roller to rotate through the bite washer 20;

[0054] Step 2: The rotating retractable roller synchronously drives the traction ring 22 to rotate, pulling the wire rope 25 to reel it up, so that the mineral container connected to the wire rope 25 rises. During the rise, the roller 24 rolls with the wire rope 25 to reduce resistance, and the rotating wheel 19 rotates on the rotating frame 18 through the internal bearing wheel 29 to reduce resistance, thereby improving the working efficiency of the equipment;

[0055] Step 3: The heat generated by the motor 4 is absorbed by the cooling water in the cooling pipe 8. The cooling water enters the cooling water circulation system under the action of the water pump 11, and the waste heat in the cooling water is transferred to the heat exchange spiral tube 10 in the insulation kettle 9 to heat the clean water in the insulation kettle 9, thereby realizing heat energy recovery;

[0056] Step 4: The heat dissipation of the heat pipe group 12 is accelerated by the fan blades 14 driven by the drive shaft 6 to cool the internal cooling water. After the heat is dissipated, the cooling water flows back into the cooling pipe 8 to continue cooling the motor 4.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mineral lifting device for coal mining, characterized in that: include: A chassis (1), wherein the top rear end of the chassis (1) is connected to a moving seat (3) via an electric guide rail (2) so that the moving seat (3) as a mounting platform can move in coordination with the mounted equipment; a motor (4) as a power source for a mineral lifting device is mounted on the top rear end of the moving seat (3); a cooling pipe (8) is arranged around the surface of the outer shell of the motor (4); cooling water flowing through the cooling pipe (8) absorbs heat from the surface of the outer shell of the motor (4) to assist in cooling the motor (4); a heat recovery tank is fixed to the rear end of the moving seat (3); the output end of the cooling pipe (8) is connected to the heat recovery tank, and the waste heat is recovered by the heat recovery tank; a cooling unit is arranged between the input end of the cooling pipe (8) and the output end of the heat recovery tank to cool the cooling water and re-enter the cooling cycle; A retractable roller, the retractable roller being mounted on the front end of the top side of the chassis (1), the outer wall of the retractable roller being sleeved with a plurality of traction rings (22), a frame body (23) being fixedly connected to the left side of the front end of the chassis (1), a plurality of rollers (24) being rotatably connected to the top end of the frame body (23), a steel wire rope (25) being arranged between the traction ring (22) and the rollers (24), one end of the steel wire rope (25) being wound around the outer wall of the traction ring (22), the rollers (24) being in rolling contact with the rope body portion of the steel wire rope (25), and the other end of the steel wire rope (25) being externally connected to a mineral container; A speed changer (5) for changing speed, the speed changer (5) being mounted on the front end of the top side of the moving seat (3), the rear end of the speed changer (5) being connected to the driving end of the motor (4) via a driving shaft (6), and the driving shaft (6) synchronously drives the cooling unit to perform cooling work via a transmission component, the front end of the speed changer (5) being fixedly connected to a reinforcing power shaft (7), and the front side of the reinforcing power shaft (7) being connected to the retractable roller via a bite component.

2. The mineral lifting device for coal mining according to claim 1, characterized in that: The heat recovery tank comprises a heat preservation kettle (9) fixedly connected to the rear end of the movable seat (3), a water storage chamber is arranged inside the heat preservation kettle (9), a heat exchange spiral tube (10) with a spiral layout is fixedly connected inside the water storage chamber, and the input end of the heat exchange spiral tube (10) is connected to the output end of the cooling tube (8) through a connecting tube.

3. The mineral lifting device for coal mining according to claim 1 is characterized in that: The cooling unit comprises a heat dissipation pipe group (12) installed at the left end of the top side of the movable seat (3); the outer wall of the heat dissipation pipe group (12) is provided with a heat dissipation groove; a water pump (11) is arranged at the rear side of the heat dissipation pipe group (12); the water pump (11) is connected to the output end of the heat exchange spiral tube (10) and the input end of the heat dissipation pipe group (12) through a connecting pipe; the output end of the heat dissipation pipe group (12) is connected to the input end of the cooling pipe (8) through a connecting pipe; a fan blade housing (13) is arranged at the front side of the heat dissipation pipe group (12); a fan blade (14) is rotatably connected inside the fan blade housing (13).

4. The mineral lifting device for coal mining according to claim 3 is characterized in that: The transmission assembly comprises two pulleys (15) driven by a belt, wherein one of the pulleys (15) is fixedly connected to the outer wall of the drive shaft (6), and the other pulley (15) is fixedly connected to the front side of the fan blade (14).

5. The mineral lifting device for coal mining according to claim 1, characterized in that: The retractable roller comprises two rotating frames (18) located at the front end of the top side of the chassis (1); the bottom side of the rotating frame (18) at the rear end is fixedly connected to the chassis (1) via a fixed seat (16); the bottom side of the rotating frame (18) at the front end is connected to the chassis (1) via a slide rail (17); the inner wall of the rotating frame (18) is rotatably connected to a rotating wheel (19); the front side of the rotating wheel (19) at the rear end is fixedly connected to a mounting shaft (21); the traction ring (22) and the rotating wheel (19) at the front end are both sleeved on the outer wall of the mounting shaft (21).

6. The mineral lifting device for coal mining according to claim 5, characterized in that: The bite assembly comprises two bite washers (20) which are locked to each other, wherein one of the bite washers (20) is fixedly connected to the front side of the reinforcing power shaft (7), and the other bite washer (20) is fixedly connected to the rear side of the rotating wheel (19) at the rear end.

7. The mineral lifting device for coal mining according to claim 5, characterized in that: The left and right sides of the fixed seat (16) are both rotatably connected to gears (26), the left and right sides of the front end rotating frame (18) are both fixedly connected to racks (28), the front side of the movable seat (3) is fixedly connected to two racks (27), and the adjacent sides of the racks (27) and (28) are meshed with the gears (26).

8. The mineral lifting device for coal mining according to claim 5, characterized in that: An oil injection channel (30) is provided inside the rotating frame (18), and a plurality of bearing wheels (29) are rotatably connected inside the oil injection channel (30). The outer periphery of the bearing wheel (29) penetrates the inner wall of the rotating frame (18) and is in rolling contact with the outer periphery of the rotating wheel (19). Sealing plugs are provided at both openings of the oil injection channel (30).

9. The mineral lifting device for coal mining according to claim 1, characterized in that: The outer peripheries of the traction ring (22) and the roller (24) are both provided with anti-slip protrusions.

10. A method for lifting minerals for coal mining, using the device for lifting minerals for coal mining as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Start the motor (4), the motor (4) drives the drive shaft (6) to rotate, and changes the speed through the speed changer (5), so that the reinforced power shaft (7) outputs a speed suitable for lifting the mineral container, and the reinforced power shaft (7) drives the retractable roller to rotate through the bite washer (20); Step 2: The rotating retractable roller synchronously drives the traction ring (22) to rotate, pulling the wire rope (25) to reel in the mineral container connected to the wire rope (25), so that the mineral container connected to the wire rope (25) rises. During the rise, the roller (24) and the wire rope (25) are in rolling contact to reduce resistance, and the rotating wheel (19) rotates on the rotating frame (18) through the internal bearing wheel (29) to reduce resistance, thereby improving the working efficiency of the equipment; Step 3: The heat generated by the operation of the motor (4) is absorbed by the cooling water in the cooling pipe (8), and the cooling water enters the cooling water circulation system under the action of the water pump (11), and the waste heat in the cooling water is transferred to the heat exchange spiral tube (10) in the insulation kettle (9), and the clean water in the insulation kettle (9) is heated to realize heat recovery; Step 4: The heat dissipation pipe group (12) accelerates heat dissipation through the fan blades (14) driven by the drive shaft (6) to cool the internal cooling water. After the heat is dissipated, the cooling water flows back into the cooling pipe (8) to continue cooling the motor (4).

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