Explosion-proof permanent magnet planetary driving device of coal mine scraper

Abstract

The invention discloses an explosion-proof permanent magnet planetary driving device for a coal mine scraper conveyor, and relates to the technical field of coal mine scraper conveyors, the explosion-proof permanent magnet planetary driving device comprises a scraper assembly, a planetary assembly is fixedly mounted on the outer surface of one side of the scraper assembly, and a temperature control assembly for cooling the planetary assembly is arranged on the outer surface of one side of the scraper assembly; a limiting assembly is arranged between the planet assembly and the outer surface of the scraper assembly. According to the explosion-proof permanent magnet planetary driving device for the coal mine scraper, cooling water at the bottom of a water tank is conveyed into a first spiral pipe and a second spiral pipe by arranging a temperature control assembly and a water pump, the first spiral pipe is located on the outer surface of a permanent magnet motor, and the second spiral pipe is located between a first fixing shell and a gear ring; heat generated outside the permanent magnet motor and inside the first fixing shell can be effectively taken away through circulation of water in the two spiral pipes, and heat dissipation and cooling are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mine scraper, in particular to a coal mine scraper explosion-proof permanent magnet planetary drive device. BACKGROUND

[0002] The coal mine scraper, full name coal mine scraper conveyor, is a continuous conveying equipment widely used in coal mine underground, which uses the scraper fixed on the traction chain to continuously move in the chute, thereby continuously conveying coal along the chute direction.

[0003] The existing coal mine scraper is usually applied in coal mine underground. In the continuous working process, the internal drive device of the coal mine scraper continuously converts electrical energy into mechanical energy and transmits power. The friction between the machines and the fluid friction will inevitably generate heat. These heat is continuously accumulated, causing the overall temperature to gradually rise. At the same time, the environment in the coal mine underground is relatively closed, the ventilation condition is poor, and the heat dissipation efficiency is low, so that the temperature of the drive device of the coal mine scraper gradually reaches and exceeds the self-ignition temperature of coal dust during the continuous rising process, thereby causing coal dust explosion.

[0004] Therefore, we propose a coal mine scraper explosion-proof permanent magnet planetary drive device to solve the problems raised in the above. SUMMARY

[0005] The purpose of the present application is to provide a coal mine scraper explosion-proof permanent magnet planetary drive device to solve the problem that the temperature in the internal drive device of the coal mine scraper continuously rises and gradually reaches and exceeds the self-ignition temperature of coal dust during continuous operation, thereby causing coal dust explosion.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a coal mine scraper explosion-proof permanent magnet planetary drive device, comprising a scraper assembly, a planetary assembly is fixedly installed on one side of the outer surface of the scraper assembly, a temperature control assembly for cooling the planetary assembly is arranged on the outer surface of one side of the scraper assembly, and a limiting assembly is arranged between the outer surface of the planetary assembly and the scraper assembly; the scraper assembly comprises two opposite first fixed plates, a main shaft is movably embedded between the inner walls of the two first fixed plates near the two side edges, the temperature control assembly comprises a water tank, a plurality of evenly arranged heat sinks are fixedly installed on the inner wall of the water tank, one end of one of the main shafts is fixedly connected with a rotating shaft, a fan is fixedly sleeved on the outer surface of the rotating shaft, a water pump is fixedly installed on the outer surface of one of the first fixed plates through screws, the input end of the water pump is fixedly communicated with a first water pipe, the output end of the water pump is fixedly communicated with a second water pipe, one end of the second water pipe is fixedly communicated with a first spiral pipe, one end of the first spiral pipe is fixedly communicated with a second spiral pipe, and one end of the second spiral pipe is fixedly communicated with a third water pipe.

[0007] Preferably, the outer surface of the rotating shaft is movably penetrated through the inner wall of the water tank, the fan is located in the interior of the water tank, the first water pipe is movably penetrated through the inner wall of the water tank and extends to the interior of the water tank, and the outer surface of the third water pipe is movably penetrated through the inner wall of the water tank and extends to the interior of the water tank.

[0008] Preferably, the outer surface of the third water pipe is provided with a plurality of uniformly arranged circular holes in the interior of the water tank, a second fixed plate is fixedly installed between the outer surfaces of the two first fixed plates by screws, chain wheels are fixedly sleeved on the outer surfaces of the two main shafts, and a chain is engaged between the outer surfaces of the two chain wheels.

[0009] Preferably, the outer surface of the chain is attached to the outer surface of the second fixed plate, a plurality of uniformly arranged scrapers are fixedly connected to the outer surface of the chain, the outer surfaces of the plurality of scrapers are attached to the outer surface of the second fixed plate, a first fixed shell is fixedly installed on the outer surface of one of the first fixed plates, a second fixed shell is fixedly connected to the outer surface of the first fixed shell at the center, and a permanent magnet motor is arranged in the interior of the first fixed shell.

[0010] Preferably, the outer surface of the first spiral pipe is fixedly connected to the inner wall of the second fixed shell, the first spiral pipe is located between the inner wall of the second fixed shell and the outer surface of the permanent magnet motor, an output shaft is fixedly connected to the output end of the permanent magnet motor, a drive shaft is fixedly connected to one end of the output shaft, a sun gear is fixedly sleeved on the outer surface of the drive shaft, and one end of the other main shaft is fixedly connected to a transmission shaft.

[0011] Preferably, a rotating block is fixedly sleeved on the outer surface of the transmission shaft, three uniformly arranged rotating shafts are movably embedded in the inner wall of the rotating block, planetary gears are fixedly sleeved on the outer surfaces of the three rotating shafts, the outer surfaces of the three planetary gears are engaged with the outer surface of the sun gear, and a first sliding groove is formed in the inner wall of one side of the first fixed shell.

[0012] Preferably, a first sliding block is slidingly connected to the inner wall of the first sliding groove, a gear ring is fixedly connected to the outer surface of the first sliding block, the outer surfaces of the three planetary gears are engaged with the outer surface of the gear ring, a first gear is fixedly connected to one side of the outer surface of the gear ring, the outer surface of the second spiral pipe is fixedly connected to the outer surface of the first fixed shell, and the second spiral pipe is located between the outer surfaces of the first fixed shell and the gear ring.

[0013] Preferably, the other side inner wall of the first fixed shell is provided with a second sliding groove, the inner wall of the second sliding groove is slidably connected with a second sliding block, the outer surface of the second sliding block is fixedly connected with a cover plate, the outer surface of the cover plate is attached to the inner wall of the first fixed shell, one side outer surface of the cover plate is fixedly connected with a second gear, and the outer surface of the second gear is engaged with the outer surface of the first gear.

[0014] Preferably, the outer surface of the cover plate is provided with two grooves, the limiting assembly comprises two moving shafts, the outer surfaces of the two moving shafts are movably embedded in the inner wall of one of the first fixed plates, the inner wall of one of the first fixed plates is provided with two springs, one end of each of the two springs is fixedly connected with the inner wall of the first fixed plate, and the other end of each of the two springs is fixedly connected with a limiting block.

[0015] Preferably, the outer surfaces of the two moving shafts are fixedly connected with the inner walls of the two limiting blocks respectively at positions close to one end, the outer surfaces of the two limiting blocks are slidably connected with the inner wall of one of the first fixed plates, the inner wall of one of the first fixed plates is fixedly embedded with a fixed shaft at a position close to the two limiting blocks, and the outer surfaces of the two fixed shafts are movably sleeved with baffles at positions close to one end.

[0016] Compared with the prior art, the present application has the following advantages: 1、The device is provided with a temperature control assembly, and the water pump delivers the cooling water at the bottom of the water tank to the inside of the first spiral pipe and the second spiral pipe, wherein the first spiral pipe is located on the outer surface of the permanent magnet motor, and the second spiral pipe is located between the first fixed shell and the gear ring. Through the circulation of water in the two spiral pipes, the heat generated outside the permanent magnet motor and inside the first fixed shell can be effectively taken away, heat dissipation and cooling are realized, and the heat dissipation efficiency of the coal mine scraper drive device can be effectively improved, and the working temperature can be significantly reduced. This ensures that the temperature of the drive device does not reach and exceed the self-ignition point of coal dust during continuous operation, thereby effectively avoiding the explosion risk caused by the self-ignition of coal dust.

[0017] 2、The device is provided with a planetary assembly, when the weight of the coal transported by the coal mine scraper is small, the required driving torque is small and a higher running speed is required, the speed can be adjusted by fixing the gear ring, at this time, in the power transmission path of the planetary assembly, the fixed state of the gear ring enables the kinetic energy of the planetary gear to be concentrated into the rotational kinetic energy of the transmission shaft, driving the transmission shaft to rotate at high speed, and then driving the main shaft to rotate quickly, meeting the requirements of light load and high speed operation, when the weight of the coal transported by the scraper is large, a large driving torque is required and a low running speed is required, the gear ring can be rotated by the planetary gear, in this state, the rotation of the gear ring shunts part of the power, so that the transmission shaft obtains a lower rotating speed, thereby driving the main shaft to rotate slowly, so as to match the heavy load and low speed operation scene, through this adjustment mode based on the state of the gear ring, the device can flexibly adapt to the speed and torque requirements of the coal mine scraper under different loads, and efficient and stable operation is realized.

[0018] 3、The device is provided with a limiting assembly, the outer surface of the limiting block is matched with the inner wall of the groove, so that the movement of the cover plate can be limited, when the movement of the cover plate is not required, the limiting block is moved, so that the outer surface of the limiting block is completely matched with the inner wall of one of the first fixed plates, at this time, one end of the limiting block is matched with the outer surface of the baffle, so that the flexible limiting and unlocking functions can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a front view of the coal mine scraper explosion-proof permanent magnet planetary drive device of the application; Figure 2 It is a chain part perspective view of the coal mine scraper explosion-proof permanent magnet planetary drive device of the application; Figure 3 It is a planetary gear part perspective view of the coal mine scraper explosion-proof permanent magnet planetary drive device of the application; Figure 4 It is a heat sink part perspective view of the coal mine scraper explosion-proof permanent magnet planetary drive device of the application; Figure 5 It is a first spiral pipe part perspective view of the coal mine scraper explosion-proof permanent magnet planetary drive device of the application; Figure 6 It is a first fixed shell part structure cross-sectional perspective view of the coal mine scraper explosion-proof permanent magnet planetary drive device of the application; Figure 7 It is a groove part perspective view of the coal mine scraper explosion-proof permanent magnet planetary drive device of the application; Figure 8 It is a limiting assembly part perspective view of the coal mine scraper explosion-proof permanent magnet planetary drive device of the application.

[0020] In the drawings: 1, Scraper assembly; 101, First fixed plate; 102, Second fixed plate; 103, Main shaft; 104, Sprocket; 105, Chain; 106, Scraper; 2, Planetary assembly; 201, First fixed shell; 202, Second fixed shell; 203, Permanent magnet motor; 204, Output shaft; 205, Drive shaft; 206, Sun gear; 207, Transmission shaft; 208, Rotating block; 209, Rotating shaft; 210, Planetary gear; 211, First sliding slot; 212, First sliding block; 213, Gear ring; 214, First gear; 215, Second sliding slot; 216, Second sliding block; 217, Cover plate; 218, Second gear; 219, Groove; 3, Temperature control assembly; 301, Water tank; 302, Rotating shaft; 303, Fan; 304, Water pump; 305, First water pipe; 306, Second water pipe; 307, First coiled pipe; 308, Second coiled pipe; 309, Third water pipe; 310, Circular hole; 311, Radiating fin; 4, Limiting assembly; 401, Moving shaft; 402, Spring; 403, Limiting block; 404, Fixed shaft; 405, Baffle. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0022] Please refer to Figures 1-8The application provides the technical scheme: a coal mine scraper anti-explosion permanent magnet planetary drive device, which comprises a scraper assembly 1, the outer surface of one side of the scraper assembly 1 is fixedly provided with a planetary assembly 2, the outer surface of one side of the scraper assembly 1 is provided with a temperature control assembly 3 for cooling the planetary assembly 2, and a limiting assembly 4 is arranged between the outer surface of the scraper assembly 1 and the planetary assembly 2; the scraper assembly 1 comprises two opposite first fixed plates 101, the inner walls of the two first fixed plates 101 are movably embedded with main shafts 103 near the edges of the two sides, the temperature control assembly 3 comprises a water tank 301, the inner wall of the water tank 301 is fixedly provided with a plurality of uniformly arranged heat dissipation fins 311, one end of one of the main shafts 103 is fixedly connected with a rotating shaft 302, the outer surface of the rotating shaft 302 is fixedly provided with a fan 303, the outer surface of one of the first fixed plates 101 is fixedly provided with a water pump 304 through screws, the input end of the water pump 304 is fixedly communicated with a first water pipe 305, the output end of the water pump 304 is fixedly communicated with a second water pipe 306, one end of the second water pipe 306 is fixedly communicated with a first spiral pipe 307, one end of the first spiral pipe 307 is fixedly communicated with a second spiral pipe 308, one end of the second spiral pipe 308 is fixedly communicated with a third water pipe 309, the outer surface of the rotating shaft 302 movably penetrates the inner wall of the water tank 301, the fan 303 is located in the inner part of the water tank 301, the first water pipe 305 fixedly penetrates the inner wall of the water tank 301 and extends into the inner part of the water tank 301, the outer surface of the third water pipe 309 movably penetrates the inner wall of the water tank 301 and extends into the inner part of the water tank 301, a plurality of uniformly arranged circular holes 310 are formed in the outer surface of the third water pipe 309 located in the inner part of the water tank 301, the outer surface of the two first fixed plates 101 is fixedly provided with a second fixed plate 102 through screws, the outer surfaces of the two main shafts 103 are fixedly provided with sprockets 104, and the outer surfaces of the two sprockets 104 are meshed with a chain 105.

[0023] In the embodiment, the explosion-proof permanent magnet planetary drive device of the coal mine scraper is used in the process of use. The permanent magnet motor 203 is started. The permanent magnet motor 203 drives the output shaft 204 to rotate. The outer surface of the output shaft 204 rotates along the inner wall of the first fixed shell 201 and drives the drive shaft 205 to rotate. The drive shaft 205 drives the sun gear 206 to rotate. The sun gear 206 drives the meshing planetary gear 210 to rotate. The planetary gear 210 rotates and meshes with the gear ring 213. At the same time, the planetary gear 210 drives the rotating shaft 209 to rotate. The outer surface of the rotating shaft 209 rotates along the inner wall of the rotating block 208 and drives the rotating block 208 to rotate. The rotating block 208 drives the transmission shaft 207 to rotate. The outer surface of the transmission shaft 207 rotates along the inner wall of the first fixed shell 201 and drives one of the connected main shafts 103 to rotate. The main shaft 103 drives the outer surface of the chain wheel 104 to rotate. One of the chain wheels 104 drives the chain 105 to rotate. The chain 105 moves and drives the outer surface of the scraper 106 to move along the outer surface of the second fixed plate 102, thereby driving the coal located on the second fixed plate 102 to move. The chain 105 drives another chain wheel 104 to rotate. The other chain wheel 104 drives the connected main shaft 103 to rotate. The main shaft 103 drives the connected rotating shaft 302 to rotate. The outer surface of the rotating shaft 302 rotates along the inner wall of the water tank 301 and drives the fan 303 to rotate. At this time, the water pump 304 is started. The input end of the water pump 304 generates suction in the first water pipe 305. The first water pipe 305 sucks the cooling water at the bottom of the water tank 301 into the first water pipe 305, and then flows through the inside of the first water pipe 305 to the water pump 304. At this time, the water pump 304 generates pressure to flow the cooling water in the water pump 304 to the second water pipe 306. At this time, the cooling water flows into the first spiral pipe 307 along the inside of the second water pipe 306. The first spiral pipe 307 is located outside the permanent magnet motor 203. The cooling water flowing through the first spiral pipe 307 forms a heat exchange interface with the outer shell of the permanent magnet motor 203 in contact. The heat generated by the permanent magnet motor 203 during operation is transmitted to the pipe wall of the first spiral pipe 307, and then transmitted to the internal cooling water to rapidly absorb and remove the excess heat generated by the permanent magnet motor 203. At this time, the cooling water flows through the inside of the first spiral pipe 307 to the inside of the second spiral pipe 308. The second spiral pipe 308 is located inside the first fixed shell 201. When the sun gear 206, the planetary gear 210 and the gear ring 213 rotate in the core to generate heat, the heat is concentrated in the inside of the first fixed shell 201. The outer surface of the second spiral pipe 308 is fixedly penetrated through the inner wall of the first fixed shell 201,The cooling water in the second coil pipe 308 at this time can cool the inside of the first fixed shell 201 through the pipe wall of the second coil pipe 308, and then the cooling water can flow into the third water pipe 309 along the inside of the second coil pipe 308, drip onto the cooling fins 311 through the plurality of round holes 310 on the inside of the third water pipe 309, and the fan 303 rotates at the same time, so as to accelerate the heat dissipation of the water. The water drips onto the bottom of the water tank 301 through the cooling fins 311, and then flows through the first water pipe 305 to circulate and cool. The device is provided with a temperature control assembly 3. The water pump 304 sends the cooling water at the bottom of the water tank 301 to the inside of the first coil pipe 307 and the second coil pipe 308. The first coil pipe 307 is located on the outer surface of the permanent magnet motor 203, and the second coil pipe 308 is located between the first fixed shell 201 and the gear ring 213. The heat generated outside the permanent magnet motor 203 and inside the first fixed shell 201 can be effectively taken away through the circulation of water in the two coil pipes, so as to realize heat dissipation and cooling, thereby effectively improving the heat dissipation efficiency of the coal mine scraper drive device and significantly reducing the working temperature. This ensures that the temperature of the drive device does not reach and exceed the self-ignition point of coal dust during continuous operation, thereby effectively avoiding the explosion risk caused by the self-ignition of coal dust, and solving the problem that the temperature inside the drive device of the coal mine scraper in the prior art continuously increases during continuous operation and gradually reaches and exceeds the self-ignition temperature of coal dust, thereby causing coal dust explosion.

[0024] As Figures 1-8As shown, the outer surface of the chain 105 is attached to the outer surface of the second fixed plate 102, and the outer surface of the chain 105 is fixedly connected with a plurality of uniformly arranged scrapers 106, the outer surface of the plurality of scrapers 106 is attached to the outer surface of the second fixed plate 102, wherein the outer surface of one of the first fixed plate 101 is fixedly installed with a first fixed shell 201, the outer surface of the first fixed shell 201 is fixedly connected with a second fixed shell 202 at the center, the outer surface of the first fixed shell 201 is provided with a permanent magnet motor 203 inside the second fixed shell 202, the outer surface of the first spiral tube 307 is fixedly connected with the inner wall of the second fixed shell 202, the first spiral tube 307 is located between the inner wall of the second fixed shell 202 and the outer surface of the permanent magnet motor 203, the output end of the permanent magnet motor 203 is fixedly connected with an output shaft 204, one end of the output shaft 204 is fixedly connected with a drive shaft 205, the outer surface of the drive shaft 205 is fixedly sleeved with a sun gear 206, one end of the other main shaft 103 is fixedly connected with a transmission shaft 207, the outer surface of the transmission shaft 207 is fixedly sleeved with a rotating block 208, the inner wall of the rotating block 208 is movably embedded with three uniformly arranged rotating shafts 209, the outer surface of the three rotating shafts 209 is fixedly sleeved with a planetary gear 210, the outer surface of the three planetary gears 210 is engaged with the outer surface of the sun gear 206, the inner wall of one side of the first fixed shell 201 is provided with a first sliding groove 211, the inner wall of the first sliding groove 211 is slidably connected with a first sliding block 212, the outer surface of the first sliding block 212 is fixedly connected with a gear ring 213, the outer surface of the three planetary gears 210 is engaged with the outer surface of the gear ring 213, the outer surface of one side of the gear ring 213 is fixedly connected with a first gear 214, the outer surface of the second spiral tube 308 is fixedly connected with the outer surface of the first fixed shell 201, the second spiral tube 308 is located between the first fixed shell 201 and the outer surface of the gear ring 213, the other inner wall of the first fixed shell 201 is provided with a second sliding groove 215, the inner wall of the second sliding groove 215 is slidably connected with a second sliding block 216, the outer surface of the second sliding block 216 is fixedly connected with a cover plate 217, the outer surface of the cover plate 217 is attached to the inner wall of the first fixed shell 201, the outer surface of one side of the cover plate 217 is fixedly connected with a second gear 218, the outer surface of the second gear 218 is engaged with the outer surface of the first gear 214.

[0025] In the embodiment, during the use of the explosion-proof permanent magnet planetary drive device of the coal mine scraper, the permanent magnet motor 203 is started, the permanent magnet motor 203 drives the output shaft 204 to rotate, the outer surface of the output shaft 204 rotates along the inner wall of the first fixed shell 201 and drives the driving shaft 205 to rotate, the driving shaft 205 drives the sun gear 206 to rotate, the sun gear 206 drives the meshing planetary gear 210 to rotate, when the coal on the outer surface of the second fixed plate 102 is heavy at this time, the transmission shaft 207 needs low speed and high torque at this time, the outer surface of the planetary gear 210 rotates along the outer surface of the gear ring 213 and drives the gear ring 213 to rotate, the gear ring 213 drives the outer surface of the first sliding block 212 on one side to rotate along the inner wall of the first sliding groove 211, and the gear ring 213 drives the first gear 214 on the other side to rotate, the first gear 214 drives the meshing second gear 218 to rotate, the second gear 218 drives the cover plate 217 to rotate, the cover plate 217 drives the outer surface of the second sliding block 216 to rotate along the inner wall of the second sliding groove 215, and the cover plate 217 drives the two grooves 219 to rotate at this time, the rotation speed of the planetary gear 210 is slow, so that the rotation speed of the rotating block 208 is slow, the rotation speed of the transmission shaft 207 is slow, so that the rotation speed of the main shaft 103 is slow, the main shaft 103 drives the chain 105 to rotate, and the chain 105 drives the scraper 106 to move at a slow speed, when the coal on the outer surface of the second fixed plate 102 is light at this time, the transmission shaft 207 needs high speed and low torque at this time, two limiting blocks 403 are placed in the two grooves 219 at this time, when the planetary gear 210 drives the gear ring 213 to rotate, the gear ring 213 drives the first gear 214 to rotate, the outer surface of the first gear 214 is engaged with the outer surface of the second gear 218, the limiting block 403 is engaged with the inner wall of the groove 219 at this time, so that the cover plate 217 cannot rotate, the cover plate 217 cannot drive the second gear 218 to rotate, the first gear 214 cannot rotate, so that the gear ring 213 cannot rotate, the rotation speed of the planetary gear 210 is fast at this time, so that the rotation speed of the rotating block 208 is fast, the rotation speed of the transmission shaft 207 is fast, so that the rotation speed of the main shaft 103 is fast, the main shaft 103 drives the chain 105 to rotate, and the chain 105 drives the scraper 106 to move at a fast speed, the device can realize speed regulation by fixing the gear ring 213 when the coal transported by the coal mine scraper is small in weight, the required driving torque is small, and high running speed is required, in the power transmission path of the planetary assembly 2, the fixed state of the gear ring 213 enables the kinetic energy of the planetary gear 210 to be concentrated and converted into rotational kinetic energy of the transmission shaft 207,The driving shaft 207 rotates at high speed, and then drives the main shaft 103 to rotate rapidly, which meets the operation requirement of light load and high speed. When the coal transported by the scraper conveyor is heavy, a larger driving torque is required and a lower running speed is required. The planetary gear 210 drives the gear ring 213 to rotate. In this state, the rotation of the gear ring 213 divides part of the power, so that the driving shaft 207 obtains a lower rotating speed, thereby driving the main shaft 103 to rotate slowly, so as to match the operation scene of heavy load and low speed. Through the regulation and control mode based on the state of the gear ring 213, the device can flexibly adapt to the speed and torque requirements of the coal mine scraper conveyor under different loads, and realize efficient and stable operation.

[0026] As shown in Figures 1-8 The outer surface of the cover plate 217 is provided with two grooves 219. The limiting assembly 4 includes two movable shafts 401. The outer surfaces of the two movable shafts 401 are movably embedded in the inner wall of one of the first fixed plates 101. The inner wall of one of the first fixed plates 101 is provided with two springs 402. One end of each of the two springs 402 is fixedly connected with the inner wall of the first fixed plate 101. The other end of each of the two springs 402 is fixedly connected with a limiting block 403. The outer surfaces of the two movable shafts 401 are fixedly connected with the inner walls of the two limiting blocks 403 near one end, respectively. The outer surfaces of the two limiting blocks 403 are slidably connected with the inner wall of one of the first fixed plates 101. The inner wall of one of the first fixed plates 101 is fixedly embedded with a fixed shaft 404 near the two limiting blocks 403. The outer surfaces of the two fixed shafts 404 are movably sleeved with baffles 405 near one end.

[0027] In this embodiment, when the rotation of the gear ring 213 needs to be limited, the worker moves the baffle 405 at this time, the inner wall of the baffle 405 will rotate along the outer surface of the fixed shaft 404, until the outer surface of the baffle 405 is no longer in contact with the outer surface of the limiting block 403, at this time the elastic force of the spring 402 will push the limiting block 403 to move, the outer surface of the limiting block 403 will move along the inner wall of the first fixed plate 101, the limiting block 403 will drive the outer surface of the moving shaft 401 to slide along the inner wall of the first fixed plate 101 while moving, at this time the elastic force of the spring 402 will drive one end of the limiting block 403 to adhere to the outer surface of the cover plate 217, and the permanent magnet motor 203 will drive the gear ring 213 to rotate at the same time, the gear ring 213 rotates and drives the cover plate 217 to rotate, the cover plate 217 rotates and drives the groove 219 to rotate, the groove 219 rotates and gradually contacts the limiting block 403, until the outer surface of the limiting block 403 is attached to the inner wall of the groove 219 to limit the rotation of the cover plate 217, the cover plate 217 cannot rotate so that the gear ring 213 cannot rotate, to limit the rotation of the gear ring 213, when the rotation of the gear ring 213 does not need to be limited, the worker moves the limiting block 403 at this time, the limiting block 403 will drive the outer surface of the moving shaft 401 to slide along the inner wall of the first fixed plate 101 while being compressed by the spring 402, until the limiting block 403 is located inside the first fixed plate 101, at this time the worker rotates the baffle 405 again, the inner wall of the baffle 405 will rotate along the outer surface of the fixed shaft 404, until the outer surface of the baffle 405 is attached to the outer surface of the limiting block 403, at this time the outer surface of the limiting block 403 is no longer in contact with the inner wall of the groove 219, so as not to limit the rotation of the cover plate 217, the device is provided with a limiting assembly 4, by attaching the outer surface of the limiting block 403 to the inner wall of the groove 219, the movement of the cover plate 217 can be limited, when the movement of the cover plate 217 does not need to be limited, move the limiting block 403, so that the outer surface of the limiting block 403 is completely attached to the inner wall of one of the first fixed plates 101, at this time one end of the limiting block 403 is attached to the outer surface of the baffle 405, so as to realize the flexible limiting and unlocking function.

[0028] The method for using the device and the working principle: a coal mine scraper explosion-proof permanent magnet planetary drive device in the process of use, start the permanent magnet motor 203, the permanent magnet motor 203 will drive the sun gear 206 rotation, the sun gear 206 will drive the meshing planetary gear 210 rotation, when the coal quantity is heavy on the outer surface of the second fixed plate 102 at this time, the transmission shaft 207 needs low speed high torque at this time, the outer surface of the planetary gear 210 will rotate along the outer surface of the gear ring 213 and drive the gear ring 213 to rotate, the gear ring 213 will drive the first gear 214 to rotate, the first gear 214 rotates and drives the meshing second gear 218 to rotate, the second gear 218 rotates and drives the cover plate 217 to rotate, the rotation speed of the planetary gear 210 at this time is slow, so the rotation speed of the chain 105 is slow, when the coal quantity is light on the outer surface of the second fixed plate 102 at this time, the transmission shaft 207 needs high speed low torque, the rotation of the gear ring 213 needs to be limited, at this time, the worker moves the baffle 405, the inner wall of the baffle 405 will rotate along the outer surface of the fixed shaft 404, until the outer surface of the baffle 405 is no longer in contact with the outer surface of the limiting block 403, at this time, the spring 402 will push the limiting block 403 to move, the outer surface of the limiting block 403 will move along the inner wall of the first fixed plate 101, the limiting block 403 will drive the outer surface of the moving shaft 401 to slide along the inner wall of the first fixed plate 101 at the same time, the spring 402 will drive one end of the limiting block 403 to adhere to the outer surface of the cover plate 217, at the same time, the permanent magnet motor 203 will drive the gear ring 213 to rotate, the gear ring 213 will drive the cover plate 217 to rotate, the cover plate 217 will drive the groove 219 to rotate, the groove 219 will gradually contact the limiting block 403 when rotating, until the outer surface of the limiting block 403 is in close contact with the inner wall of the groove 219, thereby limiting the rotation of the cover plate 217, the cover plate 217 cannot rotate, so the gear ring 213 cannot rotate, to limit the rotation of the gear ring 213, the planetary gear 210 rotates and drives the rotating shaft 209 to rotate, the outer surface of the rotating shaft 209 will rotate along the inner wall of the rotating block 208 and drive the rotating block 208 to rotate, the rotating block 208 rotates and drives the transmission shaft 207 to rotate, the outer surface of the transmission shaft 207 will rotate along the inner wall of the first fixed shell 201 and drive one of the connected main shafts 103 to rotate, the main shaft 103 rotates and drives the chain wheel 104 fixed on the outer surface to rotate, one of the chain wheels 104 rotates and drives the chain 105 to rotate, the chain 105 rotates and moves the outer surface of the scraper 106 along the outer surface of the second fixed plate 102, thereby driving the coal on the second fixed plate 102 to move, the chain 105 moves and drives another chain wheel 104 to rotate, another chain wheel 104 rotates and drives the connected main shaft 103 to rotate, the main shaft 103 rotates and drives the connected rotating shaft 302 to rotate,The outer surface of the rotating shaft 302 rotates along the inner wall of the water tank 301 while driving the fan 303 to rotate, at this time, the water pump 304 is started, the input end of the water pump 304 generates suction in the inside of the first water pipe 305, the first water pipe 305 sucks the cooling water at the bottom of the water tank 301 into the inside of the first water pipe 305, and then flows through the inside of the first water pipe 305 into the water pump 304, at this time, the water pump 304 generates pressure to flow the cooling water in the water pump 304 into the second water pipe 306, at this time, the cooling water flows into the first spiral pipe 307 along the inside of the second water pipe 306, the first spiral pipe 307 is located outside the permanent magnet motor 203, the cooling water flows through the inside of the first spiral pipe 307 into the inside of the second spiral pipe 308, the second spiral pipe 308 is located inside the first fixed shell 201, then the cooling water flows through the inside of the second spiral pipe 308 into the third water pipe 309, and drips onto the cooling fin 311 through the multiple circular holes 310 on the inside of the third water pipe 309, at this time, the fan 303 rotates at the same time, so as to accelerate the heat dissipation of water, and then drips onto the bottom of the water tank 301 through the cooling fin 311, and then flows through the first water pipe 305 to circulate and cool.

[0029] The wiring diagram of the permanent magnet motor 203 and the water pump 304 in the application belongs to the common knowledge in the art, and its working principle is a known technology, and the model is selected according to actual use, so the control mode and wiring arrangement of the permanent magnet motor 203 and the water pump 304 are not explained in detail.

[0030] Although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. An explosion-proof permanent magnet planetary drive device for a coal mine scraper, comprising a scraper assembly (1), a planetary assembly (2) is fixedly installed on one side of the outer surface of the scraper assembly (1), a temperature control assembly (3) for cooling the planetary assembly (2) is arranged on one side of the outer surface of the scraper assembly (1), and a limiting assembly (4) is arranged between the outer surface of the scraper assembly (1) and the planetary assembly (2). characterized in that The scraper assembly (1) comprises two opposite first fixed plates (101), a main shaft (103) is movably embedded between the inner walls of the two first fixed plates (101) near the edges of the two sides, the temperature control assembly (3) comprises a water tank (301), a plurality of uniformly arranged heat dissipation fins (311) are fixedly installed on the inner wall of the water tank (301), one end of one of the main shafts (103) is fixedly connected with a rotating shaft (302), the outer surface of the rotating shaft (302) is fixedly sleeved with a fan (303), the outer surface of one of the first fixed plates (101) is fixedly installed with a water pump (304) through screws, the input end of the water pump (304) is fixedly communicated with a first water pipe (305), the output end of the water pump (304) is fixedly communicated with a second water pipe (306), one end of the second water pipe (306) is fixedly communicated with a first spiral pipe (307), one end of the first spiral pipe (307) is fixedly communicated with a second spiral pipe (308), and one end of the second spiral pipe (308) is fixedly communicated with a third water pipe (309).

2. The explosion-proof permanent magnet planetary drive device for coal mine scraper according to claim 1, characterized in that: The outer surface of the rotating shaft (302) movably penetrates the inner wall of the water tank (301), the fan (303) is located in the interior of the water tank (301), the first water pipe (305) fixedly penetrates the inner wall of the water tank (301) and extends into the interior of the water tank (301), and the outer surface of the third water pipe (309) movably penetrates the inner wall of the water tank (301) and extends into the interior of the water tank (301).

3. The explosion-proof permanent magnet planetary drive device for coal mine scraper according to claim 2, characterized in that: A plurality of uniformly arranged circular holes (310) are formed in the outer surface of the third water pipe (309) located in the interior of the water tank (301), a second fixed plate (102) is fixedly installed between the outer surfaces of the two first fixed plates (101) through screws, chain wheels (104) are fixedly sleeved on the outer surfaces of the two main shafts (103), and chains (105) are engaged between the outer surfaces of the two chain wheels (104).

4. The explosion-proof permanent magnet planetary drive device for coal mine scraper according to claim 3, characterized in that: The outer surface of the chain (105) is attached to the outer surface of the second fixed plate (102), a plurality of uniformly arranged scrapers (106) are fixedly connected to the outer surface of the chain (105), the outer surfaces of the plurality of scrapers (106) are attached to the outer surface of the second fixed plate (102), a first fixed shell (201) is fixedly installed on the outer surface of one of the first fixed plates (101), a second fixed shell (202) is fixedly connected to the outer surface of the first fixed shell (201) at the center, and a permanent magnet motor (203) is arranged in the interior of the first fixed shell (201) at the outer surface of the second fixed shell (202).

5. The explosion-proof permanent magnet planetary drive device for coal mine scraper according to claim 4, characterized in that: The outer surface of the first spiral pipe (307) is fixedly connected with the inner wall of the second fixed shell (202), the first spiral pipe (307) is located between the inner wall of the second fixed shell (202) and the outer surface of the permanent magnet motor (203), the output end of the permanent magnet motor (203) is fixedly connected with an output shaft (204), one end of the output shaft (204) is fixedly connected with a drive shaft (205), the outer surface of the drive shaft (205) is fixedly sleeved with a sun gear (206), and one end of the other main shaft (103) is fixedly connected with a transmission shaft (207).

6. The explosion-proof permanent magnet planetary drive device for coal mine scraper according to claim 5, characterized in that: The outer surface of the transmission shaft (207) is fixedly sleeved with a rotating block (208), the inner wall of the rotating block (208) movably embeds three uniformly arranged rotating shafts (209), the outer surfaces of the three rotating shafts (209) are all fixedly sleeved with planetary gears (210), the outer surfaces of the three planetary gears (210) are all in engagement with the outer surface of the sun gear (206), and the inner wall of one side of the first fixed shell (201) is provided with a first sliding groove (211).

7. The explosion-proof permanent magnet planetary drive device for coal mine scraper according to claim 6, characterized in that: The inner wall of the first sliding groove (211) is slidably connected with a first sliding block (212), the outer surface of the first sliding block (212) is fixedly connected with a gear ring (213), the outer surfaces of the three planetary gears (210) are all in engagement with the outer surface of the gear ring (213), one side of the outer surface of the gear ring (213) is fixedly connected with a first gear (214), and the outer surface of the second spiral pipe (308) is fixedly connected with the outer surface of the first fixed shell (201). The second spiral pipe (308) is located between the outer surface of the first fixed shell (201) and the gear ring (213).

8. The explosion-proof permanent magnet planetary drive device for coal mine scraper according to claim 7, characterized in that: The inner wall of the other side of the first fixed shell (201) is provided with a second sliding groove (215), the inner wall of the second sliding groove (215) is slidably connected with a second sliding block (216), the outer surface of the second sliding block (216) is fixedly connected with a cover plate (217), the outer surface of the cover plate (217) is attached to the inner wall of the first fixed shell (201), one side of the outer surface of the cover plate (217) is fixedly connected with a second gear (218), and the outer surface of the second gear (218) is in engagement with the outer surface of the first gear (214).

9. The explosion-proof permanent magnet planetary drive device for coal mine scraper according to claim 8, characterized in that: The outer surface of the cover plate (217) is provided with two grooves (219), the limiting assembly (4) comprises two moving shafts (401), the outer surfaces of the two moving shafts (401) are movably embedded in the inner wall of one of the first fixed plates (101), the inner wall of one of the first fixed plates (101) is provided with two springs (402), one end of each of the two springs (402) is fixedly connected with the inner wall of the first fixed plate (101), and the other end of each of the two springs (402) is fixedly connected with a limiting block (403).

10. The explosion-proof permanent magnet planetary drive device for coal mine scraper according to claim 9, characterized in that: The outer surfaces of the two moving shafts (401) are fixedly connected with the inner walls of two limiting blocks (403) near one end respectively, and the outer surfaces of the two limiting blocks (403) are slidably connected with the inner walls of one of the first fixed plates (101), and the inner walls of one of the first fixed plates (101) are fixedly embedded with fixed shafts (404) near the two limiting blocks (403), and the outer surfaces of the two fixed shafts (404) are movably sleeved with baffle plates (405) near one end.

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