CN113937973A - Servo type driving motor on permanent magnet direct-drive ball mill - Google Patents
Servo type driving motor on permanent magnet direct-drive ball mill Download PDFInfo
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- CN113937973A CN113937973A CN202111381234.1A CN202111381234A CN113937973A CN 113937973 A CN113937973 A CN 113937973A CN 202111381234 A CN202111381234 A CN 202111381234A CN 113937973 A CN113937973 A CN 113937973A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
- H02K21/021—Means for mechanical adjustment of the excitation flux
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/24—Driving mechanisms
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
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- Food Science & Technology (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a follow-up driving motor on a permanent magnet direct-drive ball mill, which comprises a ball mill roller, a stator power mechanism, a rotor power mechanism, a supporting frame and a roller, wherein the stator power mechanism is connected to the centripetal inner side of the supporting frame and comprises a stator silicon steel sheet, a coil, a stator shell, a guide wheel and an elastic pressure device; the rotor power mechanism comprises a rotor silicon steel sheet, a permanent magnet and a magnetism isolating aluminum plate; the ball mill roller is arranged on the inner surface of the rotary drum, the guide wheel is arranged between the centripetal inner surface of the stator shell and the rotary drum, the elastic pressure device is arranged between the support frame and the centripetal outer surface of the stator shell, and the stator power mechanism and the rotor power mechanism form a follow-up driving motor; this structural design is novel, and the clearance between steerable stator core and the rotor core is invariable, makes very little of clearance design, reduces the permanent magnet quantity, reduces motor manufacturing cost, and the influence that the great degree reduction of while or avoided motor rotor off-centre to bring operates steadily. The traditional concept is overturned, so that the eccentric rotation operation of the motor can still normally operate, the frequent correction of the gap between the stator core and the rotor core is avoided, the frequent maintenance and replacement of the bearing is avoided, the shutdown maintenance is not needed after the eccentricity occurs, the continuous working time is longer, the maintenance frequency is reduced, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of ball mill driving motors, in particular to a follow-up driving motor on a permanent magnet direct-drive ball mill.
Background
The ball mill is a device for crushing materials, and the basic principle of the ball mill is that a steel ball in a cylinder is lifted to a certain height by utilizing a rotating force to be thrown and dropped to crush the materials, the materials are crushed by mutual contact between the steel ball and the materials, the traditional ball mill needs to be provided with a complex transmission mechanism, a motor output shaft drives a pinion through a speed reducer, and the pinion drives a gear wheel to drive a rotary drum to rotate. The Chinese patent application No. 201610640563.6 discloses a permanent magnet synchronous motor direct-drive energy-saving ball mill, wherein a rotary drum is provided with a feeding shaft and a discharging end at two ends respectively, the rotary drum is sleeved in a sliding bearing, the sliding bearing is arranged on a bearing support frame, the surface of the rotary drum is sleeved with an annular motor, the annular motor is arranged on a motor support frame, the annular motor comprises a shell, a stator and a rotor, the shell is fixed on the motor support frame, a stator core and a stator winding are distributed in the stator, the stator is fixedly arranged in the shell, the rotor is a permanent magnet pole fixedly connected with a pole support frame, and the pole support frame is fixedly arranged on the shell of the rotary drum; the permanent magnet magnetic pole is directly arranged on the surface of the rotary drum, the rotary drum is directly driven by the annular motor, the complicated transmission mechanisms are completely eliminated, the operation is more stable, no transmission loss exists, the occupied area is less, more ball mills can be arranged in the same factory building, and the production efficiency is improved, and the energy conservation and emission reduction are facilitated. However, because the diameter of the roller of the ball mill is large, the roller is used as a rotor of a permanent magnet direct drive motor, the roller is deformed during mechanical manufacturing and material processing and assembly, and the ball mill is overlong, has overlarge weight and causes eccentric swing during operation due to the clearance and abrasion of a supporting system. The eccentricity causes uneven clearance between a stator core and a rotor core of the motor, further generates vibration and noise, increases loss, increases temperature rise and the like, and when the eccentricity is serious, the stator core and the rotor core can be contacted, the chamber sweeping phenomenon is generated, and the motor is damaged. Therefore, when the permanent magnet motor is applied to manufacturing products, the motor is prevented from sweeping the chamber only by increasing the gap between the rotor and the stator, the motor is required to be stopped frequently to calibrate and adjust the gap, the gap between the stator and the rotor of the direct-drive permanent magnet motor is increased, the using amount of the permanent magnet is increased, and the cost is increased. There is therefore a great need in the market for improved techniques to solve the above problems.
Disclosure of Invention
The invention aims to overcome the existing defects and provides a follow-up type driving motor on a permanent magnet direct-drive ball mill, which has novel structural design, can control the constant gap between a stator iron core and a rotor iron core, ensures that the gap design is very small, reduces the using amount of permanent magnets, reduces the manufacturing cost of the motor, greatly reduces or avoids the influence caused by the eccentricity of a motor rotor, and operates stably. The traditional concept is overturned, so that the motor can still normally operate in the eccentric rotation operation, the frequent correction of the gap between the stator core and the rotor core is avoided, the frequent maintenance and replacement of the bearing is avoided, the shutdown maintenance is not needed after the eccentricity occurs, the continuous working time is longer, the maintenance frequency is reduced, the production efficiency is improved, and the problems in the background art can be effectively solved.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a follow-up driving motor on permanent magnetism direct drive ball mill, includes ball mill cylinder, stator power unit, rotor power unit, braced frame, rotary drum, its characterized in that: the stator power mechanism is connected to the centripetal inner side of the supporting frame and comprises a stator silicon steel sheet, a coil, a stator shell, a guide wheel and an elastic pressure device. The rotor power mechanism comprises a rotor silicon steel sheet, a permanent magnet and a magnetic isolation aluminum plate. The rotor power mechanism is arranged on the outer surface of the rotary drum, the ball mill rotary drum is arranged on the inner surface of the rotary drum, the guide wheel is arranged between the centripetal inner surface of the stator shell and the rotary drum, the elastic pressure device is arranged between the supporting frame and the centripetal outer surface of the stator shell, the stator power mechanism and the rotor power mechanism form a follow-up driving motor, and the permanent magnets and the rotor silicon steel sheets are uniformly distributed around the rotary drum rotary shaft; when the motor is powered on, a power mechanism of the rotor is driven to drive the rotary drum to rotate, a plurality of independent follow-up driving motors flexibly perform circumferential and radial follow-up motion under the eccentric state of the rotary drum of the ball mill, the gap between the stator and the rotor of the motor is controlled by the constant distance of a rolling guide wheel of the follow-up driving motor, the smaller the gap between the stator and the rotor is, the less the permanent magnet is used, the lower the manufacturing cost of the motor is, the higher the efficiency is, and the more obvious the electricity-saving effect is.
Furthermore, braced frame adopts the mode equipment of concatenation, and braced frame passes through the spiro union and installs on the pre-buried good basis with ground contact, and braced frame's concatenation mode is constituteed, and convenient transportation, braced frame periphery and both sides face movable seal prevent dust, water, to inside driving motor's influence.
Furthermore, the elastic pressure device comprises a connecting rod, a fixed screw rod, an adjusting nut and a pressure spring. A plurality of bosses are welded on the inner side of the supporting frame along the circumference, a plurality of small supporting pieces are screwed on the bosses, and the small supporting pieces support the connecting rod and the elastic pressure device. The stator shell is provided with a cavity, the lower end of the connecting rod penetrates through the small supporting piece to be inserted into the cavity for fixing, the fixing connection disc at the upper end of the connecting rod is provided with a through hole, a plurality of fixing lead screws penetrate through the connection disc through holes to be in threaded connection with the small supporting piece, an adjusting nut is arranged above the fixing lead screws, a pressure spring is arranged between the adjusting nut and the fixing connection disc of the connecting rod, and the adjusting nut plays a role in adjusting the radial pressure of the driving motor.
Further, the assembly position of the elastic pressure device is preferably assembled on the circumferential surface of the supporting frame, and the pressure spring is preferably a disc spring.
Furthermore, the elastic pressure device is arranged between the stator shell and the supporting frame, does not influence the disassembly of the stator power mechanism, can be arranged in the middle above the stator shell, and can also be arranged at two sides above the stator shell, namely, the elastic pressure device structure is arranged at the centripetal outer side of each stator shell and in the supporting frame and can be distributed at different parts of the inner circumference of the supporting frame.
Furthermore, a guide wheel fixing seat is fixed on the centripetal inner surface of the stator shell, the guide wheels are installed on the guide wheel fixing seat and are in contact with the outer surface of the rotary drum, four guide wheels are arranged on a single stator power mechanism and are arranged at the centripetal four corners of a chassis of the follow-up driving motor so as to obtain stability, the guide wheel mechanism comprises a guide wheel fixing seat, a pin shaft and a bearing, the distance between the centripetal outer arc surface of the guide wheel fixing seat and the centripetal inner arc surface of the stator shell can be adjusted during initial assembly of the guide wheels, the subsequent guide wheels can be adjusted after abrasion, the guide wheels are positioned and screwed after the distance is adjusted, the guide wheels of the follow-up driving motor are in constant-distance rolling contact with the outer surface of the rotary drum screwed on the periphery of the rotary drum, the gap between the stator core and the rotor core is ensured to be unchanged, the gap can be designed to be smaller, and the chamber sweeping phenomenon can not occur so as to damage the motor, the smaller the gap, the less the permanent magnet of the motor, the higher the efficiency, the more energy-saving the motor and the lower the cost.
Furthermore, the follow-up driving motor adopts a modular design, the stator power mechanism is independently arranged on the circumference of the rotary drum, and the follow-up driving motor is provided with a fan-shaped block shell mechanical structure, a silicon steel sheet, a water cooling pipeline, a coil, a testing system and an independent elastic pressure device which are independent of each other.
Furthermore, the supporting frame is provided with a stop block along the circumferential direction, the two circumferential ends of each follow-up driving motor are fixedly provided with a stop block, the contact surface of each stop block and the stator power mechanism is provided with a rubber block, the stop blocks are used for limiting the moving range of the stator power mechanism, the torque force of the driving motor running along the circumferential direction is stopped when the driving motor rotates forwards or backwards, and the adjacent stator silicon steel sheets are protected from being deformed due to collision.
Furthermore, the axial direction and the circumferential radial direction of the supporting frame can be continuously provided with a stop block, so that the stator power mechanism is subjected to limiting protection in all directions.
Further, the stator punching sheet of each stator module is respectively laminated and fastened, an arc-shaped stator pressing ring is utilized to compress and fix, a small-span coil is embedded into a stator groove, stator winding insulation and binding treatment are simultaneously performed, the manufactured stator module is integrally subjected to paint dipping treatment and drying, the manufacture and packaging of each module are completed, each stator module is installed and fixed on a fan-shaped stator shell, a guide wheel and an elastic pressure device are added, the stator punching sheet is distributed and installed in a supporting frame, a follow-up driving motor is formed by the stator punching sheet and a rotor power mechanism, and the follow-up driving motor is debugged and operated respectively or integrally.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention subverts the traditional concept and enables the eccentric rotation operation of the motor to still normally operate. The invention avoids frequently correcting the gap between the stator core and the rotor core and frequently maintaining and replacing the bearing, can still be used due to larger bearing abrasion, does not influence the motor efficiency, does not need to be stopped and overhauled after the eccentricity is generated like a motor with a traditional structure, has longer continuous working time and large size of a mill, is troublesome to overhaul, and reduces the overhauling frequency, namely improves the production efficiency.
2. The servo-type driving motor is arranged on the servo-type driving motor, the gap between the stator and the rotor of the motor is controlled by the constant distance of the rolling guide wheel of the servo-type driving motor, and the smaller the gap between the stator and the rotor is on the basis that the motor does not sweep the chamber during operation, the higher the motor efficiency is, the more obvious the electricity-saving effect is, the lower the motor manufacturing cost is, and the amplitude of the driving motor is released by the driving motor, so that the aim of stable operation is fulfilled.
3. The invention is provided with an elastic pressure device, a pressure spring of the elastic pressure device is in a semi-compression state when a roller of the ball mill is not eccentric, if the roller of the ball mill fluctuates upwards, the roller can push up a guide wheel on a servo-type driving motor stator power mechanism upwards to drive the stator power mechanism to move upwards, the pressure spring above continuously compresses, meanwhile, the pressure spring on the lower stator power mechanism pushes up the lower stator power mechanism upwards to ensure that the guide wheel of the lower stator power mechanism is still attached to the outer surface of the roller, so that the gap between the stator and the rotor is ensured to be unchanged, the roller of the ball mill resets downwards or continuously fluctuates downwards, the pressure spring of the upper stator power mechanism presses the upper stator power mechanism downwards, and the lower stator power mechanism is pressed downwards by the roller. Thereby ensuring that the clearance between the stator core and the rotor core is not changed when the motor is eccentrically vibrated.
Drawings
FIG. 1 is a schematic view of the overall assembly structure of the present invention;
FIG. 2 is a schematic view of a partial structure of a rotor power mechanism according to the present invention;
FIG. 3 is a schematic side view of the rotor power mechanism and a single stator power mechanism according to the present invention;
fig. 4 is a schematic structural diagram of an elastic device in a single stator power mechanism according to the present invention.
In the figure: 1 ball mill roller, 2 stator power units, 3 elastic pressure devices, 4 support frames, 5 rotor power units, 6 rotating cylinders, 7 adjusting nuts, 8 pressure springs, 9 connecting rods, 10 fixed lead screws, 11 cavities, 12 guide wheel fixing seats, 13 guide wheels, 14 follow-up driving motors, 15 connecting holes, 16 magnetic isolation aluminum plates, 17 rotor silicon steel sheets, 18 stator silicon steel sheets, 19 coils, 20 water cooling pipelines, 21 stator shells, 22 permanent magnets, 23 stoppers and 24 small support pieces.
Detailed Description
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The invention is described in detail with reference to the accompanying drawings, which provide a technical solution: a servo drive motor on a permanent magnet direct drive ball mill comprises a ball mill roller 1, a stator power mechanism 2, a rotor power mechanism 5, a support frame 4 and a rotating drum 6; the stator power mechanism is connected to the centripetal inner side of the support frame and comprises a stator silicon steel sheet 18, a coil 19, a stator shell 21, a guide wheel 13 and an elastic pressure device 3. The rotor power mechanism comprises a rotor silicon steel sheet 17, a permanent magnet 22 and a magnetism isolating aluminum plate 16, the rotor power mechanism is arranged on the outer surface of the rotary drum, the rotary drum is provided with a connecting hole 15 for flange mounting of the roller of the ball mill, the guide wheel is arranged between the centripetal inner surface of the stator shell and the rotary drum, the elastic pressure device is arranged between the support frame and the centripetal outer surface of the stator shell, the stator power mechanism and the rotor power mechanism form a follow-up driving motor 14, and the permanent magnet and the rotor silicon steel sheet of the rotor power mechanism are uniformly distributed around the rotary drum rotating shaft; when the motor is powered on, a power mechanism of the rotor is driven to drive the rotary drum to rotate, a plurality of independent follow-up driving motors flexibly perform circumferential and radial follow-up motion under the eccentric state of the rotary drum of the ball mill, the gap between a stator and a rotor of the motor is controlled by the constant distance of a rolling guide wheel of the follow-up driving motor, the smaller the gap between the stator and the rotor is on the basis that the motor does not sweep the chamber during operation, the higher the motor efficiency is, the more obvious the electricity-saving effect is, the lower the manufacturing cost of the motor is, the plurality of modularized follow-up driving motors are arranged on the outer surface of a rotor structure screwed on the periphery of the eccentric or vibrating rotary drum, the follow-up driving motors move along with the vibration of the rotary drum, the gap between a stator core and a rotor core is ensured to be unchanged, and the purpose of stable operation is achieved.
The braced frame adopts the mode equipment of concatenation, and braced frame passes through the spiro union and installs on the pre-buried good basis with ground contact, and braced frame's concatenation mode is constituteed, and convenient transportation, braced frame periphery and both sides face movable seal prevent dust, water, to inside driving motor's influence. Elastic pressure device one end is connected with braced frame, and the other end is connected with driving motor's stator casing, and elastic pressure device includes connecting rod 9, fixed screw 10, adjusting nut 7, pressure spring 8, and braced frame's inboard welding a plurality of boss, a plurality of little support piece 24 of spiro union on the boss, little support piece support connecting rod and elastic pressure device. The stator shell is provided with a cavity 11, the lower end of the connecting rod penetrates through the small support piece to be inserted into the cavity for internal fixation, the fixing connection disc at the upper end of the connecting rod is provided with a through hole, a plurality of fixing lead screws penetrate through the connection disc through holes to be in threaded connection with the small support piece, an adjusting nut is arranged above the fixing lead screws, a pressure spring is arranged between the adjusting nut and the fixing connection disc of the connecting rod, and the adjusting nut plays a role in adjusting the radial pressure of the driving motor. The assembly position of the elastic pressure device is preferably assembled on the circumferential surface of the supporting frame, the pressure spring is preferably a disc spring, and the elastic pressure device is used for buffering and consuming the amplitude transmitted to the driving motor when the rotary drum rotates and releasing the amplitude from the rotary drum; the elastic pressure device structures are arranged on the centripetal outer side of each driving stator shell and in the supporting frame and are distributed on different parts of the inner circumference of the frame, and the positions of each pressure device on the annular supporting frame are different, and the pressure settings are different; such as: when the frame is arranged right above the stator power mechanism, the self weight of the stator power mechanism is added with the attraction force of the permanent magnet, the elastic pressure can be set to be smaller, the frame is arranged right below the stator power mechanism, and the elastic pressure in the pressure device is correspondingly increased by a little because the self weight of the stator power mechanism sinks.
The elastic pressure device is arranged between the stator shell and the supporting frame and does not influence the disassembly of the stator power mechanism, can be arranged in the middle above the stator shell and also can be arranged at two sides above the stator shell, namely, the elastic pressure device structure is arranged at the centripetal outer side of each stator shell and in the supporting frame and can be distributed at different parts of the inner circumference of the supporting frame.
A guide wheel is arranged between the centripetal inner surface of a stator shell of the follow-up driving motor and the rotary drum, an elastic pressure device is arranged between the centripetal outer surface of the stator shell and the supporting frame, after the motor is powered on, a stator power mechanism drives a rotor power mechanism to drive the rotary drum and the rotary drum to rotate, a plurality of independent driving motors flexibly perform circumferential and radial follow-up under the eccentric state of the rotary drum, and the gap between a stator and a rotor of the motor is controlled by rolling the guide wheel of the driving motor at a constant distance so as to be controlled to be minimum; the follow-up driving motors are in modular design, are produced in a factory and produced in a flowing mode, are transported, are assembled on site, and are convenient to replace subsequently, and the plurality of follow-up driving motors with independent structures on the rotary drum are provided with independent sector shell mechanical structures, silicon steel sheets, cooling systems, coils, testing systems and independent elastic pressure systems.
The inner side surface of the stator shell is fixed with a guide wheel fixing seat 12, the guide wheels are installed on the guide wheel fixing seat and are in contact with the outer surface of the rotary drum, a single stator power mechanism is provided with four guide wheels, the guide wheels are arranged at four centripetal corner positions of a chassis of a follow-up driving motor to obtain stability, the guide wheel mechanism is provided with a guide wheel fixing seat, a pin shaft and a bearing, the distance between the centripetal outer side cambered surface of the guide wheel fixing seat and the centripetal inner surface cambered surface of the stator shell can be adjusted during initial assembly of the guide wheels, the subsequent guide wheels can be adjusted after abrasion, positioning and screwing are carried out after the distance is adjusted, the guide wheels of the follow-up driving motor are in constant-distance rolling contact with the outer surface of the rotary drum screwed on the periphery of the rotary drum, the gap between a stator iron core and a rotor iron core is ensured to be unchanged, the gap can be designed to be smaller, the phenomenon of sweeping cannot occur to damage the motor, the smaller gap is, and the use amount of permanent magnets of the motor is less, the higher the motor efficiency, the more energy-saving the motor and the lower the cost.
The follow-up driving motor adopts a modular design, the stator power mechanism is independently arranged on the circumference of the rotary drum, and the follow-up driving motor is provided with a fan-shaped block shell mechanical structure, a silicon steel sheet, a water cooling pipeline 20, a coil, a testing system and an independent elastic pressure device which are independent of each other.
The supporting frame is provided with the stop blocks 23 along the circumferential direction, the two ends of the circumferential direction of each follow-up type driving motor are fixedly provided with the stop blocks, the stop blocks are used for limiting the moving range of the stator power mechanism, the torsion force of the driving motor running along the circumferential direction is blocked when the driving motor rotates forwards or backwards, and the adjacent stator silicon steel sheets are protected from being deformed due to collision. The axial direction and the circumferential radial direction of the supporting frame can be continuously provided with a stop block, and the stator power mechanism is limited and protected from all directions. The contact surface of the stop block and the stator power mechanism is provided with a rubber block or other materials to reduce noise generated in collision, and one side of the support frame is provided with a plurality of small circular holes, so that the purpose of routing each drive motor waterway pipeline and each winding outgoing line via hole is facilitated.
The stator punching sheet of each stator module is respectively laminated and fastened, an arc-shaped stator pressing ring is utilized to compress and fix, a small-span coil is embedded into a stator groove, stator winding insulation and binding treatment are simultaneously performed, the manufactured stator module is integrally subjected to paint dipping treatment and drying, the manufacture and the encapsulation of each module are completed, each stator module is installed and fixed on a fan-shaped stator shell, a guide wheel and an elastic pressure device are added, the stator module is distributed and installed in a supporting frame, a follow-up driving motor is formed by the stator module and a rotor power mechanism, and the follow-up driving motor is respectively or integrally debugged and operated.
The water cooling system can be arranged on the periphery of the silicon steel sheet of the driving motor, a semicircular groove is excavated in the axial direction, a repeated S-shaped jointless copper pipe is placed, and an inlet and an outlet of the pipeline are led to the periphery of the driving motor to be connected with the soft high-pressure water pipeline. The traditional water tank mode can also be adopted to be arranged on the centripetal outer side surface of the stator shell for fixing the stator silicon steel sheet. The water pipe connected with the inlet and the outlet of the water cooling system is required to be flexible, such as a soft high-pressure water pipe, so that the water pipe of the water cooling system is ensured not to interfere with the movement of the stator power mechanism or be damaged due to the movement of the stator power mechanism.
A stator winding of a driving motor is controlled by a frequency converter, the stator winding consists of a plurality of short-pitch independent sub-windings and is arranged on a stator, three-phase wiring terminals led out by the sub-windings are respectively connected with terminals in a terminal box arranged on a machine shell, and terminal output ends of the terminal box connected with the sub-windings are respectively and electrically connected with the frequency converter by leading out through holes of a frame; the design of the low-voltage coil and the winding solves the problems that when the high-voltage alternating-current motor is used as a main driving motor of mechanical equipment, a high-voltage frequency converter with higher price is adopted, and the cost performance is lower; the control problem of a large current contactor of the low-voltage high-power alternating-current motor is solved; the problems of current grade, difficult cooling and the like when the low-voltage high-power alternating-current motor adopts a low-voltage high-power frequency converter for power supply are avoided
The driving motors are uniformly arranged in the supporting frame according to the circumference, the outer surface and the two side surfaces of the circumference of the frame are sealed after all the driving motors are assembled, the blower blows air into the driving motors, and air quantity is blown out from a circumferential gap between the stator and the roller through positive pressure, so that the internal cooling of the driving motors is completed, and the sealing of the driving motors on external dust, water and iron element grains is also completed.
When in use: the pressure spring of the elastic pressure device is in a semi-compression state when the roller of the ball mill is not eccentric, if the roller of the ball mill fluctuates upwards, the rotary drum can push up a guide wheel on a follow-up type driving motor stator power mechanism upwards to drive the stator power mechanism to move upwards, the pressure spring above continues to compress, meanwhile, the pressure spring on the lower stator power mechanism pushes the lower stator power mechanism upwards, the guide wheel of the lower stator power mechanism is still attached to the outer surface of the rotary drum, so that the gap between the stator and the rotor is ensured to be unchanged, the roller of the ball mill resets downwards or continues to fluctuate downwards, the pressure spring of the upper stator power mechanism presses the upper stator power mechanism downwards, and the lower stator power mechanism is pressed downwards by the rotary drum; the gap between the stator and the rotor of the motor is controlled by the constant distance of the rolling guide wheel of the follow-up driving motor, the smaller the gap between the stator and the rotor is on the basis that the motor does not sweep the chamber during operation, the higher the motor efficiency is, the more obvious the electricity-saving effect is, the less the permanent magnet is used, the lower the motor manufacturing cost is, the amplitude is released by the driving motor, so that the purpose of stable operation is achieved, and the distance can be adjusted between the centripetal outer cambered surface of the guide wheel fixing seat and the centripetal inner surface of the stator shell in the follow-up driving motor structure through the elastic pressure device. The invention subverts the traditional concept and enables the eccentric rotation operation of the motor to still normally operate. The invention avoids frequently correcting the gap between the stator core and the rotor core and frequently maintaining and replacing the bearing, can still be used due to larger bearing abrasion without influencing the motor efficiency, does not need to be stopped for maintenance after the eccentricity is generated like a motor with a traditional structure, has longer continuous working time and large size of a mill, is troublesome to maintain, and reduces the maintenance frequency, namely improves the production efficiency.
While there have been shown and described what are at present considered the fundamental principles of the invention, its essential features and advantages, the invention further resides in various changes and modifications which fall within the scope of the invention as claimed.
Claims (9)
1. The utility model provides a follow-up driving motor on permanent magnetism direct drive ball mill, includes ball mill cylinder, stator power unit, rotor power unit, braced frame, rotary drum, its characterized in that: the ball mill roller is arranged on the inner surface of the rotary drum, the guide wheel is arranged between the centripetal inner surface of the stator shell and the rotary drum, the elastic pressure device is arranged between the support frame and the centripetal outer surface of the stator shell, the stator power mechanism and the rotor power mechanism form a follow-up driving motor, and the permanent magnets and the rotor silicon steel sheets are uniformly distributed around the rotary drum rotating shaft.
2. The follow-up type driving motor on the permanent magnet direct drive ball mill as claimed in claim 1, is characterized in that: the supporting frame is assembled in a splicing mode and is installed on the pre-buried foundation in contact with the ground through screw connection. The inner side of the supporting frame is welded with a plurality of bosses along the circumference, and the concave table is in threaded connection with a plurality of small supporting pieces.
3. The follow-up type driving motor on the permanent magnet direct drive ball mill as claimed in claim 1, is characterized in that: the elastic pressure device comprises a connecting rod, a fixed screw rod, an adjusting nut and a pressure spring. The stator shell is provided with a cavity, the lower end of the connecting rod penetrates through the small supporting piece to be inserted into the cavity for fixing, the fixing connection disc at the upper end of the connecting rod is provided with a through hole, a plurality of fixing lead screws penetrate through the connection disc through holes to be in threaded connection with the small supporting piece, an adjusting nut is arranged above the fixing lead screws, a pressure spring is arranged between the adjusting nut and the fixing connection disc of the connecting rod, and the adjusting nut plays a role in adjusting the radial pressure of the driving motor.
4. The follow-up type driving motor on the permanent magnet direct drive ball mill as claimed in claim 3, is characterized in that: the elastic pressure device is preferably arranged on the circumferential surface of the supporting frame in an assembling position, and the pressure spring is preferably a disc spring.
5. The follow-up type driving motor on the permanent magnet direct drive ball mill as claimed in claim 3, is characterized in that: the elastic pressure devices are arranged between the stator shell and the supporting frame, do not influence the disassembly of the stator power mechanism, can be arranged in the middle above the stator shell, and can also be arranged at two sides above the stator shell, namely the elastic pressure devices are arranged at the centripetal outer side of each stator shell and in the supporting frame and can be distributed at different parts of the inner circumference of the supporting frame.
6. The follow-up type driving motor on the permanent magnet direct drive ball mill as claimed in claim 1, is characterized in that: the centripetal inner surface of the stator shell is fixedly provided with a guide wheel fixing seat, the guide wheels are installed on the guide wheel fixing seat and are in contact with the outer surface of the rotary drum, a single stator power mechanism is provided with four guide wheels, and the guide wheels are arranged at four centripetal corners of a chassis of the follow-up driving motor.
7. The follow-up type driving motor on the permanent magnet direct drive ball mill as claimed in claim 1, is characterized in that: the follow-up driving motor adopts a modular design, a stator power mechanism of the follow-up driving motor is independently arranged on the circumference of the rotary drum, and the follow-up driving motor is provided with a fan-shaped block shell mechanical structure, a silicon steel sheet, a water cooling pipeline, a coil, a testing system and an independent elastic pressure device which are independent of each other.
8. The follow-up type driving motor on the permanent magnet direct drive ball mill as claimed in claim 1, is characterized in that: the supporting frame is provided with a stopper along the circumferential direction, two ends of the circumferential direction of each follow-up driving motor are fixedly provided with a stopper, the contact surface of the stopper and the stator power mechanism is provided with a rubber block, the moving range of the stator power mechanism is limited, the torque force of the driving motor running along the circumferential direction is prevented when the driving motor rotates forwards or backwards, and the adjacent stator silicon steel sheets are protected from being collided to cause deformation.
9. The follow-up type driving motor on the permanent magnet direct drive ball mill as claimed in claim 3, is characterized in that: the stator punching sheet of each stator module is respectively laminated and fastened, an arc-shaped stator pressing ring is utilized to compress and fix, a small-span coil is embedded into a stator groove, stator winding insulation and binding treatment are simultaneously performed, the manufactured stator module is integrally subjected to paint dipping treatment and drying, the manufacture and the encapsulation of each module are completed, each stator module is installed and fixed on a fan-shaped stator shell, a guide wheel and an elastic pressure device are added, the stator module is distributed and installed in a supporting frame, a follow-up driving motor is formed by the stator module and a rotor power mechanism, and the follow-up driving motor is respectively or integrally debugged and operated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111381234.1A CN113937973A (en) | 2021-11-20 | 2021-11-20 | Servo type driving motor on permanent magnet direct-drive ball mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111381234.1A CN113937973A (en) | 2021-11-20 | 2021-11-20 | Servo type driving motor on permanent magnet direct-drive ball mill |
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| Publication Number | Publication Date |
|---|---|
| CN113937973A true CN113937973A (en) | 2022-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111381234.1A Pending CN113937973A (en) | 2021-11-20 | 2021-11-20 | Servo type driving motor on permanent magnet direct-drive ball mill |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115610002A (en) * | 2022-10-10 | 2023-01-17 | 山东京御堂制药有限公司 | Powder compaction device |
| CN116633075A (en) * | 2023-06-05 | 2023-08-22 | 江苏海拓宾未来工业科技集团有限公司 | High-speed permanent magnet motor of air suspension centrifugal blower and working method thereof |
-
2021
- 2021-11-20 CN CN202111381234.1A patent/CN113937973A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115610002A (en) * | 2022-10-10 | 2023-01-17 | 山东京御堂制药有限公司 | Powder compaction device |
| CN116633075A (en) * | 2023-06-05 | 2023-08-22 | 江苏海拓宾未来工业科技集团有限公司 | High-speed permanent magnet motor of air suspension centrifugal blower and working method thereof |
| CN116633075B (en) * | 2023-06-05 | 2024-05-14 | 江苏海拓宾未来工业科技集团有限公司 | High-speed permanent magnet motor of air suspension centrifugal blower and working method thereof |
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