CN216444853U

CN216444853U - Semi-direct-drive mine hoist of large permanent magnet speed reduction motor

Info

Publication number: CN216444853U
Application number: CN202121716006.0U
Authority: CN
Inventors: 王颖捷; 邱战峰; 李伟达; 王九茂; 王英俊
Original assignee: Luoyang Jiuyi Group Mining Machinery Co ltd
Current assignee: Luoyang Jiuyi Group Mining Machinery Co ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2022-05-06
Anticipated expiration: 2031-07-27

Abstract

The utility model discloses a large permanent magnet speed reducing motor semi-direct-drive mine hoist, which comprises a main shaft device, wherein two ends of a main shaft of the main shaft device are respectively provided with a bearing, the outside of each bearing is respectively provided with a bearing seat, the bearing seats are respectively and fixedly arranged at the upper parts of a left bearing beam and a right bearing beam, the left end of the main shaft is connected with a depth indicator, the right end of the main shaft is connected with an output shaft of a permanent magnet speed reducing motor through a gear coupling, and the right end of a rotor of the permanent magnet speed reducing motor is provided with an encoder interface; the semi-direct-drive mine hoist with the permanent magnet speed reducing motor has the advantages of high efficiency, high power factor and energy conservation of the low-speed permanent magnet synchronous motor direct-drive mine hoist, and can greatly reduce the cost, and has large output torque and simple maintenance.

Description

Semi-direct-drive mine hoist of large permanent magnet speed reduction motor

Technical Field

The utility model belongs to the technical field of mine hoists, and particularly relates to a large permanent magnet speed reducing motor semi-direct-drive mine hoist.

Background

The mine hoist is a large-scale hoisting mechanical device, and a motor drives the mechanical device to drive a steel wire rope so as to drive a container to lift in a shaft, thereby completing a conveying task. The modern mine hoist is developed to become full-automatic heavy mining machinery with large hoisting capacity, high speed and high safety. The mine hoist comprises an (explosion-proof) single-rope single-roller hoist, an (explosion-proof) single-rope double-roller hoist, a multi-rope friction type hoist and the like, and generally comprises a power system, a transmission system, a working system, a braking system, a control and operation system, an indication protection system and the like and auxiliary parts thereof.

The motor often needs low-speed drive when driving the mine winder, and traditional mine winder generally drives hoist main shaft device (reel) by the mode that high-speed direct current motor or high-speed alternating current asynchronous machine, high-speed permanent-magnet machine add the reduction gear or low-speed direct current motor or low-speed permanent-magnet synchronous machine directly drive, and traditional mine winder has following characteristics and defect: 1. the high-speed alternating current asynchronous motor (high-speed direct current motor or high-speed permanent magnet motor), the speed reducer and the main shaft device of the lifting machine. This structure adopts high-speed motor to add the reduction gear drive, and its characteristics are: the device has the advantages of large floor area, inconvenient installation, more accessory equipment and associated links, complex structure, high noise and high failure rate, but has low equipment cost, high cost performance and low comprehensive transmission efficiency (about 80 percent). 2. The low-speed direct-connection permanent magnet motor, the gear coupling and the main shaft device of the hoist. The structure adopts a low-speed large-torque motor which is directly driven without a speed reducer, and the low-speed permanent magnet frequency converter is adopted for driving, so that the structure has the advantages of multiple poles and low speed; the gear transmission link is cancelled, the transmission mechanism is simplified, the noise caused by gear transmission is eliminated, and the transmission efficiency and the reliability of the whole device are improved; an excitation power supply is not needed, the efficiency is high, and the loss is small; the electric energy quality is good, and no impact is caused to the power grid. The novel permanent magnet synchronous motor is suitable for new installation and modification projects, installation is convenient, the asynchronous motor and the speed reducer are directly replaced by a low-speed direct connection permanent magnet synchronous motor during modification, and the comprehensive transmission efficiency ratio is highest (about 93%). However, the permanent magnet direct drive motor also has some disadvantages, such as heavy weight and large volume; the design and manufacture are complex, the cost is high, and the cost performance is low. 3. The low-speed direct-coupled separately-excited synchronous motor (low-speed direct-coupled separately-excited direct-current motor) + a main shaft device of the hoist. The structure is characterized in that one or two flanges are directly forged from the main shaft; the main shaft is connected with the winding drum through a high-strength bolt and a clamping plate; the motor rotor and the main shaft adopt a conical surface interference connection mode and are installed by an oil pump. The structure adopts a low-speed large-torque motor which is directly driven without a speed reducer, the motor and a main shaft device share one main shaft, the main shaft is difficult to process and extremely high in required precision, the existing installation difficulty is high, and high-pressure hydraulic auxiliary installation is needed during installation; but needs a high-power excitation power supply, the efficiency is general, and the reactive power is higher. Its advantages are multi-polar and low speed; the gear transmission link is cancelled, the transmission mechanism is simplified, the noise caused by gear transmission is eliminated, and the transmission reliability of the whole device is improved. It is only suitable for new installation projects, and the overall transmission efficiency ratio is slightly higher (about 87%). However, the direct drive motor also has some disadvantages, such as heavy weight and large volume; the design and manufacture are complex, the cost is high, and the cost performance is low. 4. A low-speed permanent magnet synchronous motor built-in mine hoist. This structure designs into integral type structure with permanent-magnet motor and lifting machine reel, adopts the drive of low-speed type permanent magnetism converter, and its characteristics are: the integrated design, compact structure, small in noise, comprehensive transmission efficiency are than higher (about 91%), but the motor main part is built in inside the lifting machine reel, and the fault rate is slightly higher, inconvenient maintenance, the price/performance ratio is low, be not convenient for reform transform.

Traditional mine winder is generally by high-speed direct current motor or high-speed alternating current asynchronous machine, high-speed permanent magnet motor adds the reduction gear, low-speed direct current motor or low-speed permanent magnet synchronous machine directly drive mode drive hoist main shaft device (reel), some problems above all exist in mine winder structure and are not enough, traditional mine winder still need be for planetary reducer special lubrication station, environmental pollution and noise have been increased, in order to solve above-mentioned problem, need urgently one kind existing permanent magnetism directly drives the advantage of motor, again can greatly reduced cost, and small, simple to operate's permanent magnet reduction motor half drive mine winder.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a half-direct-drive mine hoist of a large permanent magnet speed reduction motor, which adopts a novel structure of a half-direct-drive integrated permanent magnet synchronous speed reduction motor, a gear coupling and a main shaft device, takes the permanent magnet speed reduction motor as a power source, adopts a high-speed universal permanent magnet frequency converter for driving, and forms a high-efficiency transmission system and a working system through the gear coupling and the main shaft device. The transmission mechanism is relatively simple in design structure, small in size, low in noise, high in transmission precision, high in power density, compact in structure, high in cost performance and convenient to install.

The technical scheme adopted by the utility model is as follows: a large permanent magnet speed reducing motor semi-direct-drive mine hoist comprises a main shaft device, wherein bearings are respectively arranged at two ends of a main shaft of the main shaft device, bearing seats are arranged outside the bearings, the bearing seats are respectively and fixedly arranged at the upper parts of a left bearing beam and a right bearing beam, a depth indicator is connected at the left end of the main shaft, the right end of the main shaft is connected with an output shaft of a permanent magnet speed reducing motor through a gear coupling, and an encoder interface is arranged at the right end of a rotor of the permanent magnet speed reducing motor; the main shaft device further comprises a winding drum which is arranged along the axial direction of the main shaft as the center, a winding drum plastic lining plate is arranged on the outer edge surface surrounding the winding drum, disc brakes are connected to two ends of the winding drum respectively and communicated with the hydraulic station, a fixed vehicle device is further arranged on the winding drum of the main shaft device, and a motor base is arranged on the lower portion of the right side of the permanent magnet speed reducing motor.

The permanent magnet speed reduction motor comprises a permanent magnet synchronous motor and a planetary reducer, wherein the permanent magnet synchronous motor comprises a motor shell, and a stator and a rotor are arranged in the motor shell; the planetary reducer comprises a reducer cover, an output shaft and a planetary gear structure, wherein the planetary gear structure is arranged in the reducer cover, the reducer cover is fixedly connected with the left end face of an inner gear ring of the planetary gear structure, and a motor shell is fixedly connected with the right end face of the inner gear ring of the planetary gear structure; a left end shaft of a rotor of the permanent magnet synchronous motor extends into a sun gear of the planetary gear structure to be in interference tight fit, a permanent magnet is arranged at the position, located in the stator, of the rotor, and a right end of the rotor extends out of a right end cover of the motor and is provided with a port connected with a photoelectric encoder.

The planetary gear structure comprises an inner gear ring, a speed reducer rotating stand, a sun gear and planetary gears, the sun gear is arranged at the central position of the inner gear ring, and three planetary gears are arranged between the inner gear ring and the sun gear and are equally divided and combined on the speed reducer rotating stand; a bearing is arranged between the speed reducer rotating frame and the motor left end cover; the output shaft and the reducer rotating frame are integrated and extend to the left to form a reducer cover, a bearing is arranged between the output shaft and the reducer cover, and a tangential key is arranged at the left end of the output shaft.

The permanent magnet speed reducing motor transmission lubricating system adopts a water cooling mode to perform forced cooling.

The working process of the large permanent magnet speed reducing motor semi-driven mine hoist comprises the following steps: the mine hoist takes a permanent magnet speed reducing motor as a power source, and a high-efficiency transmission system and a working system are formed by a gear coupling and a main shaft device; the hydraulic station and the brake device form a reliable brake system, and the disc brake is controlled by hydraulic pressure and electricity to brake; a complete control and control system is formed by the control console and the electric control equipment; a complete indicating and protecting system is composed of depth indicator, tachogenerator, photoelectric encoder, etc. The permanent magnet speed reducing motor is characterized in that a permanent magnet synchronous motor and a planetary reducer are configured into a whole, a permanent magnet is arranged at the position, located in a stator, of a rotor of the permanent magnet synchronous motor, a three-phase winding is distributed on the stator, a rotating magnetic field is formed after three-phase alternating current is introduced, the rotating magnetic field and the permanent magnet of a fixed magnetic pole on the rotor interact to generate magnetic torque, so that the rotor is driven to rotate, the rotating speed of the rotor is finally equal to the rotating speed of the rotating magnetic field generated in the stator, and speed regulation is realized by a method of changing the frequency of the stator through a frequency converter control system so as to change the synchronous rotating speed of the motor. The left end shaft of the rotor extends into the sun gear of the speed reducer for interference tight fit, the rotor drives the sun gear to rotate, the sun gear drives the planet gear to rotate, the planet gear also revolves along the center along the track of the inner gear ring, the planet gear rotates to drive the output shaft integrated with the rotating frame of the speed reducer to output power, the output shaft is connected with the main shaft device of the mine hoist through a gear coupling, the power is transmitted to the winding drum wound with the steel wire rope, and the purpose that the hoist container is lifted in a shaft is achieved.

The permanent magnet speed reduction motor comprises a permanent magnet synchronous motor and a planetary reducer, wherein the permanent magnet synchronous motor comprises a motor shell, and a stator and a rotor are arranged in the motor shell; the planetary reducer comprises a reducer cover, an output shaft and a planetary gear structure; the purpose of this is: the transmission efficiency of the primary planetary reducer is high and can reach about 98%, and the primary planetary reducer has obvious advantages in the aspects of efficiency, maintenance, cost and the like. The permanent magnet synchronous motor and the planetary reducer are combined into an integrated machine structure, and are directly connected with the mine hoist main shaft device, so that the transmission efficiency is high, the torque required to be output by the permanent magnet motor is reduced, the size of the permanent magnet motor is reduced, and the production cost is reduced.

The right end of the main shaft is connected with an output shaft of the permanent magnet speed reduction motor through a gear coupling, and the left end of the output shaft is provided with a tangential key; the purpose of this is: the permanent magnet speed reducing motor has output shaft connected to the main shaft via tangential key and gear coupler, the tangential key consists of two wedge keys with inclination of 1 to 100 and two working planes, one of them is in the plane passing through the shaft axis, and the pressure on the working plane acts in the tangential direction of the shaft to transfer great torque. The shaft coupling is used for connecting two rotary motion parts and transmitting power through the two rotary motion parts, has enough strength and rigidity, is convenient to connect, allows a certain relative installation and motion error between connected pieces, and has certain elasticity and buffer property; the output shaft is directly connected with the mine hoist main shaft device through the gear coupling, the connection advantage of a direct drive motor is reserved, the output torque is large, and the maintenance is simple;

the permanent magnet speed reducing motor is provided with a cooling pipeline, and a motor transmission lubricating system is forcibly cooled in a water cooling mode; the purpose of this is: the motor cooling fan and the speed reducer lubricating station are omitted, the occupied space of the equipment is reduced, the cost is saved, the running noise is low, and the environment is protected.

The utility model has the beneficial effects that: the semi-direct-drive mine hoist with the permanent magnet speed reduction motor has the advantages of high efficiency, high power factor and energy conservation of the low-speed permanent magnet synchronous motor direct-drive mine hoist, and the cost can be greatly reduced. Under the same working condition, compared with a full-direct-drive permanent magnet motor, the volume and the weight of the permanent magnet speed reducing motor can be reduced by more than 20-50%; compared with the traditional driving system, the volume and the weight of the driving system can be reduced by more than 50 percent. The driving structure is high in cost performance, convenient to install, capable of being directly connected with a mine hoist spindle device, capable of keeping the connection advantage of a direct drive motor, large in output torque and simple to maintain. The transmission efficiency of the first-stage planetary reducer is high and can reach about 98%, and compared with a reducer matched with an asynchronous motor, the first-stage planetary reducer has obvious advantages in the aspects of efficiency, maintenance, cost and the like.

1. The semi-direct-drive mine hoist with the permanent magnet speed reduction motor is small in size, large in power density, compact in structure and more convenient to install, the permanent magnet speed reduction motor is designed in an integrated mode, the permanent magnet speed reduction motor is directly connected with a mine hoist spindle device, the advantages of convenience in connection and large output torque of the direct-drive motor are reserved, the maintenance of the hoist is simpler, and meanwhile the foundation civil engineering cost of the hoist during installation is also reduced.

2. This permanent magnet reduction motor transmission lubricating system of half direct drive mine winder of permanent magnet reduction motor adopts water-cooling forced cooling, has saved motor cooling fan and reduction gear lubrication station, has reduced equipment occupation of land space, practices thrift the cost, and the running noise is less, environmental protection more.

Drawings

FIG. 1 is a schematic top view of a semi-direct drive mine hoist of the permanent magnet reduction motor of the present invention;

FIG. 2 is a schematic left side view of a half-direct drive mine hoist of the permanent magnet reduction motor of the present invention;

fig. 3 is a schematic structural diagram of the permanent magnet reduction motor of the present invention.

The labels in the figure are: 1. A main shaft; 2. a left bearing beam; 3. a disc brake; 4. a right bearing beam; 5. a bearing seat; 6. A gear coupling; 7. a permanent magnet reduction motor; 8. An encoder interface; 9. a motor base; 10. a depth indicator; 11. a hydraulic station; 12. a console; 13. a reel; 14. a reel plastic liner plate; 15. a motor housing; 16. an output shaft; 17. A sun gear; 18. a planetary reducer; 19. a permanent magnet synchronous motor; 20. a rotor; 21. an inner gear ring; 22. a planet wheel; 23. reduction gear revolving rack.

Detailed Description

The following detailed description of embodiments of the utility model is provided in connection with the accompanying drawings.

As shown in fig. 1-3, a large permanent magnet deceleration motor semi-direct-drive mine hoist comprises a main shaft device, wherein two ends of a main shaft 1 of the main shaft device are respectively provided with a bearing, a bearing seat 5 is arranged outside the bearing, the bearing seats 5 are respectively and fixedly arranged at the upper parts of a left bearing beam 2 and a right bearing beam 4, the left end of the main shaft 1 is connected with a depth indicator 10, the right end of the main shaft 1 is connected with an output shaft 16 of a permanent magnet deceleration motor 7 through a gear coupling 6, and the right end of a rotor 20 of the permanent magnet deceleration motor 7 is provided with an encoder interface 8; the spindle unit also includes a winding drum 13 which is arranged along the axial direction of the spindle 1 as the center, a winding drum plastic lining plate 14 is arranged on the outer edge surface surrounding the winding drum 13, two ends of the winding drum 13 are respectively connected with a disc brake 3, the disc brake 3 is communicated with the hydraulic station 11, the winding drum 13 of the spindle unit is also provided with a fixed vehicle device, and the lower part of the right side of the permanent magnet speed reducing motor 7 is provided with a motor base 9.

The permanent magnet speed reducing motor 7 comprises a planetary speed reducer 18 and a permanent magnet synchronous motor 19, the permanent magnet synchronous motor 19 comprises a motor shell 15, and a stator and a rotor 20 are arranged in the motor shell 15; the planetary reducer 18 comprises a reducer cover, an output shaft 16 and a planetary gear structure, the planetary gear structure is arranged in the reducer cover, the reducer cover is fixedly connected with the left end face of an inner gear ring 21 of the planetary gear structure, and the motor shell 15 is fixedly connected with the right end face of the inner gear ring 21 of the planetary gear structure; the left end shaft of a rotor 20 of the permanent magnet synchronous motor 19 extends into a sun gear 17 of a planetary gear structure, the rotor and the sun gear are in interference tight fit, a permanent magnet is arranged at the position, located in a stator, of the rotor 20, and the right end of the rotor 20 extends out of a right end cover of the motor and is provided with a connection photoelectric encoder interface 8. The high-speed universal permanent magnet frequency converter control system is matched, smooth starting and speed regulation can be performed, intelligent operation is achieved, and reliability is high. Through using the high accuracy control of converter to permanent magnet reducing motor 7, at the in-process of lifting machine start-stop, can't feel mechanical system's impact almost, strengthened the stability and the comfort of lifting machine in the operation process greatly, the security is high, and energy-conserving effect is showing simultaneously. The structure, installation position and working principle of the stator belong to the conventional technical means in the prior art, and are not described in detail herein.

The planetary gear structure comprises an inner gear ring 21, a speed reducer rotating frame 23, a sun gear 17 and planet gears 22, the sun gear 17 is arranged at the center of the inner gear ring 21, and three planet gears 22 are arranged between the inner gear ring 21 and the sun gear 17 and are equally combined on the speed reducer rotating frame 23; a bearing is arranged between the reducer rotating frame 23 and the left end cover of the motor; the output shaft 16 and the reducer rotating frame 23 are integrated and extend leftwards to form a reducer cover, a bearing is arranged between the output shaft 16 and the reducer cover, and the left end of the output shaft 16 is provided with a tangential key.

The permanent magnet speed reducing motor 7 is provided with a cooling pipeline, and a motor transmission lubricating system adopts a water cooling mode to perform forced cooling. A lubricating station device specially designed for the planetary reducer 18 in the traditional mine hoist is omitted, the cost is saved, and the occupied space of the equipment is reduced.

The large permanent magnet speed reducing motor semi-driven mine hoist takes a permanent magnet speed reducing motor 7 as a power source, and forms a high-efficiency transmission system and a working mechanism through a gear coupling 6 and a main shaft device, wherein the main shaft device and a main bearing mainly have the functions of winding or hanging a steel wire rope of the hoist, bearing various normal loads (including fixed loads and working loads) and abnormal loads caused under various emergency situations, and transmitting the loads to a foundation through a bearing; the transmission system comprises a gear coupling 6 and a permanent magnet speed reducing motor 7, the permanent magnet speed reducing motor 7 is used for transmitting power, and a planetary reducer 18 in the permanent magnet speed reducing motor 7 has enough strength and rigidity and can adapt to the speed ratio of various motor rotating speeds; the permanent magnet speed reducing motor 7 has output shaft 16 with tangential key, the permanent magnet speed reducing motor 7 is connected via gear coupling 6 to the main shaft unit (winding drum) of the mine hoist, and the coupling has the functions of connecting two rotating parts and transmitting power.

The reliable safety braking system is formed by the hydraulic station 11, the brake device and the hydraulic pipeline and is used for realizing the control of normal work braking and emergency braking under a fault state of the elevator, realizing secondary braking to ensure the safety of the elevator during the emergency braking and realizing reliable brake contracting when the elevator stops; the speed of the hoister can be controlled in a deceleration stage and when a heavy object is placed down; the elevator is rapidly stopped under the condition of safety protection or emergency accidents so as to avoid accidents from happening or expanding; for the double-drum hoister, when the length of the rope is adjusted or the level of the rope is changed, the floating drum can be braked, and the fixed drum is loosened; the control device of the mine hoist braking system is a hydraulic station, the disc brake 3 is braked by hydraulic and electric control, and the control device has the following functions: adjusting the braking torque; safety braking (emergency braking) in any accident situation; and pressure oil required by a rope adjusting clutch oil cylinder is provided for the rope adjusting device of the double-drum elevator.

The depth indicator 10, the depth indicator transmission device, the control console 12 and the electric control equipment form a complete observation control system, and the depth indicator 10 adopts the currently common transmission device as a memorial archway type transmission device; the primary functions of depth indicator 10 are: indicating to an operator (elevator driver) the location of the hoist container in the wellbore; sending signals of speed reduction, overwinding, parking and the like to an electrical control system; when the elevator enters the deceleration section to operate, speed-limiting protection is provided for the elevator; when the secondary braking needs to be relieved, a secondary braking relieving signal is sent to the electric control system; the console 12 functions to: the control console 12 is provided with various handles and switches, and is a control device for operating the hoister to complete lifting, lowering and various actions; the console 12 is equipped with various instruments that reflect the operation of the elevator and various conditions of the equipment to the driver. Protection system mainly includes tacho generator device, photoelectric encoder, backplate, guardrail, guard shield etc. tacho generator and photoelectric encoder's primary action: indicating to the driver the actual operating speed of the hoist by means of a meter provided on the console 12; and participating in overspeed protection in the stages of constant speed operation and deceleration operation.

The working process of the large permanent magnet speed reducing motor semi-driven mine hoist comprises the following steps: the permanent magnet speed reducing motor 7 is characterized in that a permanent magnet synchronous motor 19 and a planetary reducer 18 are configured into a whole, a permanent magnet is arranged at a position, located in a stator, of a rotor 20 of the permanent magnet synchronous motor 19, three-phase windings are distributed on the stator, a rotating magnetic field is formed after three-phase alternating current is introduced, the rotating magnetic field and the permanent magnet of a fixed magnetic pole on the rotor 20 interact to generate magnetic torque, so that the rotor 20 is driven to rotate, the rotating speed of the rotor 20 is finally equal to the rotating speed of the rotating magnetic field generated in the stator, and speed regulation is realized by a method of changing the frequency of the stator through a frequency converter control system so as to change the synchronous rotating speed of the motor. The left end shaft of the rotor 20 extends into the sun gear 17 of the speed reducer and the two are in interference tight fit, the rotor 20 drives the sun gear 17 to rotate, the sun gear 17 drives the planet gears 22 to rotate, meanwhile, the planet gears 22 still revolve along the center along the track of the inner gear ring 21, the planet gears 22 rotate to drive the output shaft 16 integrated with the rotating frame 23 of the speed reducer to output power, the output shaft 16 is connected with the main shaft 1 of the mine hoist through the gear coupling 6, the power is transmitted to the winding drum 13 wound with the steel wire rope, and the purpose that the hoist container is lifted in a shaft is achieved.

The developed JK-3X 2.2P permanent magnet speed reducing motor semi-direct drive mine hoist (the hoisting speed is 6.15 m/s), the driving motor of the hoist is composed of a permanent magnet synchronous motor 19 with rated voltage of 6KV, rated power of 1000KW, rated rotating speed of 220 rpm and rated frequency of 36.67HZ and a primary planetary reducer 18 with speed ratio of 5.62, the primary planetary reducer 18 has higher transmission efficiency which can reach about 98 percent, compared with the driving structure of a reducer matched with an asynchronous motor, the semi-direct drive mine hoist has obvious advantages in the aspects of efficiency, maintenance, cost and the like, the driving permanent magnet speed reducing motor of the hoist has the rotating speed which is 5.62 times that of a direct drive motor, the output torque can be reduced by 5.62 times compared with the direct drive motor, and the motor cost is about 20 percent lower than that of a low-speed direct drive permanent magnet synchronous motor with the same power.

The semi-direct-drive mine hoist with the permanent magnet speed reduction motor has the advantages of small volume, high power density, compact structure and more convenient installation, the permanent magnet speed reduction motor 7 is integrally designed and is directly connected with a main shaft device of the mine hoist, the advantages of convenient connection and large output torque of the direct-drive motor are reserved, the maintenance of the hoist is simpler, and the cost of foundation construction during the installation of the hoist is also reduced; this half permanent magnet gear motor directly drives 7 transmission lubricating systems of mine winder permanent magnet gear motor adopts water-cooling forced cooling, has saved motor cooling fan and reduction gear lubrication station, and the running noise is less, environmental protection more.

Claims

1. The utility model provides a half directly drives mine winder of large-scale permanent magnet reduction motor which characterized in that: the device comprises a main shaft device, wherein bearings are respectively arranged at two ends of a main shaft of the main shaft device, bearing seats are arranged outside the bearings, the bearing seats are respectively and fixedly arranged at the upper parts of a left bearing beam and a right bearing beam, the left end of the main shaft is connected with a depth indicator, the right end of the main shaft is connected with an output shaft of a permanent magnet speed reducing motor through a gear coupling, and the right end of a rotor of the permanent magnet speed reducing motor is provided with an encoder interface; the main shaft device further comprises a winding drum which is arranged along the axial direction of the main shaft as the center, a winding drum plastic lining plate is arranged on the outer edge surface surrounding the winding drum, disc brakes are connected to two ends of the winding drum respectively and communicated with the hydraulic station, a fixed vehicle device is further arranged on the winding drum of the main shaft device, and a motor base is arranged on the lower portion of the right side of the permanent magnet speed reducing motor.

2. The large permanent magnet reduction motor semi-direct drive mine hoist of claim 1, characterized in that: the permanent magnet speed reduction motor comprises a permanent magnet synchronous motor and a planetary reducer, wherein the permanent magnet synchronous motor comprises a motor shell, and a stator and a rotor are arranged in the motor shell; the planetary reducer comprises a reducer cover, an output shaft and a planetary gear structure, wherein the planetary gear structure is arranged in the reducer cover, the reducer cover is fixedly connected with the left end face of an inner gear ring of the planetary gear structure, and a motor shell is fixedly connected with the right end face of the inner gear ring of the planetary gear structure; a left end shaft of a rotor of the permanent magnet synchronous motor extends into a sun gear of the planetary gear structure to be in interference tight fit, a permanent magnet is arranged at the position, located in the stator, of the rotor, and a right end of the rotor extends out of a right end cover of the motor and is provided with a port connected with a photoelectric encoder.

3. The large permanent magnet reduction motor semi-direct drive mine hoist of claim 2, characterized in that: the planetary gear structure comprises an inner gear ring, a speed reducer rotating frame, a sun gear and planet gears, the sun gear is arranged at the central position of the inner gear ring, and three planet gears are arranged between the inner gear ring and the sun gear and are equally combined on the speed reducer rotating frame; a bearing is arranged between the speed reducer rotating frame and the motor left end cover; the output shaft and the reducer rotating frame are integrated and extend to the left to form a reducer cover, a bearing is arranged between the output shaft and the reducer cover, and a tangential key is arranged at the left end of the output shaft.