CN221081081U - Large-torque integrated planetary gear motor - Google Patents

Large-torque integrated planetary gear motor Download PDF

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Publication number
CN221081081U
CN221081081U CN202322538721.5U CN202322538721U CN221081081U CN 221081081 U CN221081081 U CN 221081081U CN 202322538721 U CN202322538721 U CN 202322538721U CN 221081081 U CN221081081 U CN 221081081U
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China
Prior art keywords
motor
reducer
gear
shell
planetary gear
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CN202322538721.5U
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Chinese (zh)
Inventor
陈华胄
段文浩
陈昕伟
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XI'AN HESHENG POWER TECHNOLOGY CO LTD
Xiamen Tungsten Co Ltd
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XI'AN HESHENG POWER TECHNOLOGY CO LTD
Xiamen Tungsten Co Ltd
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Abstract

The large-torque integrated planetary reduction motor comprises a motor and a planetary gear reducer, wherein the output end of the motor is connected with the planetary gear reducer; the motor comprises a motor shell, a stator and a rotor assembly; the stator is arranged in the motor shell, and the rotor assembly is arranged in the stator; the planetary gear reducer comprises a reducer shell, an annular gear, a three-stage reducer assembly and a reducer output shaft; the speed reducer shell is fixedly connected with the motor shell, an inner gear ring is arranged on the inner side face of the speed reducer shell, the three-stage speed reducer assembly is arranged on the inner side of the inner gear ring, one end of the three-stage speed reducer assembly is connected with the rotor assembly, and the other end of the three-stage speed reducer assembly is connected with the speed reducer output shaft. The utility model uses the planetary reducer to reduce the rotating speed and increase the torque by increasing the rotating speed of the motor, and can increase the output torque of the motor and improve the power density and the torque density of the motor under the condition that the volume of the motor is not changed greatly.

Description

Large-torque integrated planetary gear motor
Technical Field
The utility model belongs to the technical field of motors, and particularly relates to a high-torque integrated planetary reduction motor.
Background
The gear motor is an integrated body of a speed reducer and a motor, and is usually integrated and assembled by a professional speed reducer production factory, and then is integrated with the motor to be supplied in a whole set. The scheme that adopts at present is motor and reduction gear split type design, though can play the purpose of slowing down in production, nevertheless in equipment transportation and installation after the transportation, in the dismantlement link, there is certain damage risk, and the maintenance cost becomes high, and assembled equipment is bigger simultaneously, and power conversion's efficiency is also very low, and low-speed big moment of torsion motor is bulky in total at present, problem that power density is low.
Disclosure of utility model
The utility model aims to provide a large-torque integrated planetary gear motor so as to solve the problems of huge volume and low power density of the existing low-speed large-torque motor.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the large-torque integrated planetary reduction motor comprises a motor and a planetary gear reducer, wherein the output end of the motor is connected with the planetary gear reducer;
The motor comprises a motor shell, a stator and a rotor assembly; the stator is arranged in the motor shell, and the rotor assembly is arranged in the stator;
The planetary gear reducer comprises a reducer shell, an annular gear, a three-stage reducer assembly and a reducer output shaft; the speed reducer shell is fixedly connected with the motor shell, an inner gear ring is arranged on the inner side face of the speed reducer shell, the three-stage speed reducer assembly is arranged on the inner side of the inner gear ring, one end of the three-stage speed reducer assembly is connected with the rotor assembly, and the other end of the three-stage speed reducer assembly is connected with the speed reducer output shaft.
Further, the rotor assembly comprises a motor output shaft and magnetic steel, the magnetic steel is fixed on the motor output shaft in an embedded mode, and the motor output shaft is supported on two sides through deep groove ball bearings.
Further, the stator is fixed with the motor casing through a stator hot jacket.
Further, a spiral water channel is reserved on the outer circle of the stator hot sleeve, two ends of the spiral water channel are connected with two water outlets, and the water outlets and the spiral water channel form a passage.
Further, the three-stage reducer assembly comprises three sun gears, three planet carriers and nine planet gears; the periphery of each sun gear is meshed with three planetary gears to form a gear set, adjacent gear sets are connected through a planet carrier, the planet carrier at the tail end is connected with the output shaft of the speed reducer, and the sun gear at the other end is connected with the motor output shaft of the rotor assembly.
Further, the outer sides of the three planetary gears are meshed with the inner gear ring.
Furthermore, the bearings used by the planet gears and the planet carrier at the tail end are ball bearings; bearing raceways are correspondingly processed on the inner gear ring.
Further, two water outlets are arranged on the reducer shell, and water nozzles corresponding to the water outlets are arranged on the water outlets.
Further, a spiral water channel is arranged on the reducer shell and is communicated with the water nozzle.
Further, the rear end of the motor shell is connected with a rear flange, and the encoder is fixed on the motor output shaft by using a nut.
Compared with the prior art, the utility model has the following technical effects:
The utility model forms the high-power-density integrated speed reducing motor with a brand new structure by integrating the high-speed motor and the planetary speed reducer with a large reduction ratio. By utilizing the characteristic of excellent speed regulation performance of the permanent magnet motor, the planetary speed reducer is used for reducing the rotating speed and increasing the torque by improving the rotating speed of the motor, so that the output torque of the motor is increased and the power density and the torque density of the motor are improved under the condition that the volume of the motor is not greatly changed. Through the serialization design to motor parameter and reduction gear parameter, can make the flexible changeable of reduction gear output parameter, satisfy different production requirements.
Drawings
FIG. 1 is a diagram of the internal structure of the present utility model;
fig. 2 is an external view of an integrated high-torque permanent magnet planetary reduction motor;
FIG. 3 is an external view of the planetary reducer of the present utility model;
Fig. 4 shows an internal structure of the planetary reducer.
Wherein:
The motor 1, the planetary gear reducer 2, the motor housing 11, the stator 12, the motor output shaft 13, the stator heat jacket 15, the rear flange 16, the reducer housing 21, the annular gear 24, the reducer output shaft 23, the spiral water channel 26, the water nozzle 25, the sun gear 27, the planet carrier 29, the planet gear 28, the ball bearing 30, the oil drain plug 31 and the oil seal 32.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
Referring to fig. 1 to 4, the motor comprises a high-speed motor and a planetary gear reducer arranged at the front end of a motor shell.
The motor 1 comprises a motor shell 11, a stator 12, a rotor assembly, a rear flange 14, an encoder and the like which are fixed in the shell and are arranged at the rear end of the motor in a matching way.
The planetary gear reducer 2 comprises a reducer shell 21 fixedly connected with a motor shell, a sun gear 27 connected with a motor output shaft 13, a planetary gear assembly meshed with the sun gear 27, a reducer output shaft 23 connected with the planetary gear assembly, an inner gear ring 24 on the reducer shell meshed with the planetary gear and an output shaft of the reducer.
The bearings used for the planetary gear of the speed reducer and the output disc of the speed reducer are all ball bearings of a self-made rollaway nest;
An inner gear ring which is meshed with the planet gears is machined on the inner cavity wall of the reducer shell, and a bearing rollaway nest is correspondingly machined on the inner gear ring.
The upper part of the reducer housing 21 includes two water outlets, and a water nozzle 25 corresponding thereto can be installed.
The spiral water channel 26 is arranged on the outer circle of the shell of the speed reducer, a water channel passage can be formed between the spiral water channel 26 and the water jacket shell of the speed reducer, and excessive heat is taken away through cooling liquid, so that heat dissipation of the speed reducer is ensured.
The sun gear 27 is fixedly connected with the motor output shaft 13 through double bonds and screws, so that torque transmission is ensured.
The planetary gear assembly comprises three planetary gears 28 surrounding the sun gear 27 and a planetary carrier 29 connected with the planetary gears, and the planetary gears are simultaneously meshed with the sun gear and the internal teeth on the inner cavity wall of the reducer shell.
The related motor comprises a motor shell component, a stator, a rotor component, a rear flange, an electromagnetic brake and an encoder which is arranged at the rear end of the motor in a matching way, wherein the stator, the rotor component and the rear flange are fixed in the shell.
The motor shell 11 assembly consists of a stator and a water jacket which is connected with the stator heat jacket 15, a spiral water channel is reserved on the outer circle of the water jacket, two water outlets are reserved on the outer circle of the water jacket, and a passage is formed between the water outlet and the water channel so as to ensure the passing of cooling liquid and the cooling of the shell.
The stator 12 is composed of a stator core, stator punching sheets, stator coils and the like, and is fixed with the casing 11 through a heat jacket 15.
The rotor assembly comprises a motor output shaft 13, magnetic steel, a balance ring and a rotor core, wherein the magnetic steel adopts an embedded fixing mode, and the rotor assembly is supported on two sides through deep groove ball bearings.
The brake disc of the electromagnetic brake is connected with the output shaft of the motor through a key, so that the transmission of braking torque is ensured.
The encoder is fixed on the motor output shaft by using a nut, and the relative position relation with the encoder stator is ensured.
The rear flange is fixed with the rear end of the motor shell, and the encoder stator is fixed outside the end face of the electromagnetic brake.
The motor outgoing line position is positioned at the position of the outer circle of the motor shell close to the tail part, and the junction box of the motor is connected with the motor shell through the junction box adapter plate.
The motor is a permanent magnet motor. For a common electric excitation motor, the internal rotor of the electric excitation motor has windings, copper loss can be generated in the rotor windings relative to a permanent magnet motor during operation, the improvement of the motor efficiency is influenced, and meanwhile, for the electric excitation motor, under the condition of a certain output rotating speed, the volume of the motor is increased by increasing the output torque, and the improvement of the power density and the torque density is influenced. Compared with the traditional permanent magnet motor in the aspect of motor efficiency, the permanent magnet motor has the following advantages: because the magnetic field of the permanent magnet synchronous motor is generated by the permanent magnet, the excitation loss 2 caused by the magnetic field generated by exciting current is avoided, and compared with an asynchronous motor, the external characteristic efficiency curve of the permanent magnet synchronous motor is much higher in light load time efficiency value, so that the permanent magnet synchronous motor has the advantages of saving energy, compared with the largest asynchronous motor, in 3, because the power factor of the permanent magnet synchronous motor is high, compared with the asynchronous motor, the motor current is smaller, the stator copper loss of the motor is correspondingly smaller, and the efficiency is also higher. And 4, the permanent magnet synchronous motor rotor has no resistance loss, and the stator winding has little reactive current, so the temperature rise of the motor is low. The power of the permanent magnet motor with the same volume and weight can be improved by about 30 percent, and the volume, weight and used materials of the permanent magnet motor with the same power capacity can be reduced by 30 percent.
Examples:
the integrated high-torque planetary reduction motor provided by the example comprises a motor and a planetary gear reducer arranged at the front end of the motor. The planetary reducer comprises a reducer shell, a planetary reduction mechanism arranged in the reducer shell and a reducer output shaft. The motor is provided with a motor output shaft which penetrates through the shell and one end of which extends out to be connected with the planetary gear reducer. When the planetary gear speed reducer works, the output power of the motor is transmitted through the output shaft, and after the planetary gear speed reducer is in speed reduction transmission, the output power of the speed reducer is output outwards. As a preferred embodiment of the present invention, the planetary reducer has a rated rotational speed of 38rpm, a rated torque of 34000n·m, and a maximum output torque 74800n·m.
Referring to the internal structure of the body machine shown in fig. 1, the planetary gear reducer is a three-stage planetary reducer, the input end is a first-stage sun gear (input end sun gear) connected with the output shaft of the motor, and the input end sun gear is meshed with three first-stage planetary gears surrounding the input end sun gear; the back of the first-stage planet carrier fixed with the three first-stage planet gears is fixedly connected with the second-stage sun gear, and the like, so that the three-stage planetary reducer is formed.
In the structure shown, the equidistant setting of three planetary gear, this structure can make each gear atress even, has better stability, and planetary gear is not limited to three, and later stage can increase or reduce according to the required torque demand of output shaft, and size modulus also can change, guarantees output torque serialization.
Furthermore, all gears are made of metal, and the type of the metal material and the corresponding heat treatment mode are optimized, so that the speed reducer has better strength and service life, reduces noise in the transmission process, and ensures that the transmission is more stable. Meanwhile, the structure, weight and volume of the speed reducer are optimized, and better economic benefit is obtained.
The planetary gear is further connected with the planet carrier through the self-made double-row raceway bearing, compared with the standard bearing, the planetary gear has the advantages that the raceway of the original standard gear is replaced by the base material of the gear, the integral gear of the planetary gear can be greatly reduced, the overall size of the whole speed reducer is more compact, the manufacturing cost is reduced, meanwhile, the number of balls of the self-made bearing is more than that of the standard bearing, and the bearing capacity of the bearing is improved.
Furthermore, the sun gear, the planet gears and the inner gear ring gear all adopt straight tooth profiles, so that axial force can be prevented from being generated during transmission, and meanwhile, the profiles are shifted, and the bearing capacity is enhanced.
The further reduction ratio of the speed reducer is 81, and of course, in actual use, the number of teeth and the modulus of each gear are not limited to given parameters, and different transmission ratios and transmission sizes can be obtained through different number of teeth modulus combinations on the premise of meeting the transmission strength so as to meet different use requirements.
Furthermore, the outer circle of the shell of the speed reducer is provided with a hollowed water channel, and a cooling liquid passage can be formed after the water channel is matched with the water jacket of the speed reducer, so that the redundant heat generated by the speed reducer can be taken away. The cooling medium is water.
Referring to the internal structure, the structure of the motor mainly comprises a motor shell, a stator, a rotor assembly, a rear flange, an encoder, an electromagnetic brake and a junction box which are arranged in the motor shell, wherein the motor is a permanent magnet motor, and as a preferable scheme of the embodiment, the rated rotation speed of the permanent magnet motor is 3000rpm, the rated torque is 410 N.m, and the rated power is 132KW.
Further, the rotor core adopts a sectional structure, after magnetic steel is embedded, the multi-section core is pressed into the rotating shaft, and end plates made of brass are fixed at two ends of the core.
Further motor rotor passes through two deep groove ball bearings and preceding flange and the back flange joint of motor, and wherein install the ripple spring with back flange joint's bearing, can reduce the wearing and tearing improvement life of back flange, noise when reducing the during operation lightens the vibration.
An encoder is fixed to the end of the motor rotor in the axial direction by using a round nut, and the encoder is used for detecting the rotation speed and the position.
Further, a spiral water channel is reserved on the outer circle of the shell, parameters of the water channel are optimized to ensure that heat generated by the motor is taken away in time, two water outlets are reserved on the outer circle of the water jacket, the water outlets are arranged on the side face of the machine body, a passage is formed between the water outlets and the water channel to ensure the passing of cooling liquid, so that the cooling of the shell is ensured, and the cooling medium is water.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. The large-torque integrated planetary reduction motor is characterized by comprising a motor (1) and a planetary gear reducer (2), wherein the output end of the motor (1) is connected with the planetary gear reducer (2);
the motor (1) comprises a motor shell (11), a stator (12) and a rotor assembly; the stator (12) is arranged inside the motor shell (11), and the rotor assembly is arranged inside the stator (12);
The planetary gear reducer (2) comprises a reducer shell (21), an annular gear (24), a three-stage reducer assembly and a reducer output shaft (23); the speed reducer shell (21) is fixedly connected with the motor shell (11), an inner gear ring (24) is arranged on the inner side surface of the speed reducer shell (21), the three-stage speed reducer assembly is arranged on the inner side of the inner gear ring (24), one end of the three-stage speed reducer assembly is connected with the rotor assembly, and the other end of the three-stage speed reducer assembly is connected with the speed reducer output shaft (23).
2. The high-torque integrated planetary gear motor according to claim 1, wherein the rotor assembly comprises a motor output shaft (13) and magnetic steel, the magnetic steel is fixed on the motor output shaft (13) in an embedded mode, and the motor output shaft (13) is supported on two sides through deep groove ball bearings.
3. A high torque integrated planetary gear motor according to claim 1, characterized in that the stator (12) is fixed with the motor housing (11) by means of a stator heat jacket (15).
4. A high torque integrated planetary gear motor according to claim 3, wherein a spiral water channel is reserved on the outer circle of the stator heat jacket (15), two ends of the spiral water channel are connected with two water outlets, and the water outlets and the spiral water channel form a passage.
5. A high torque integrated planetary reduction motor according to claim 2, characterized in that the three-stage reducer assembly comprises three sun gears (27), three planet carriers (29) and nine planet gears (28); the periphery of each sun gear (27) is meshed with three planetary gears (28) to form a gear set, adjacent gear sets are connected through a planet carrier (29), the planet carrier (29) at the tail end is connected with a speed reducer output shaft (23), and the sun gear (27) at the other end is connected with a motor output shaft (13) of a rotor assembly.
6. A high torque integrated planetary reduction motor according to claim 5, characterized in that the outer sides of the three planetary gears (28) are meshed with the ring gear (24).
7. The high torque integrated planetary reduction motor according to claim 5, wherein the bearings used for the planetary gear (28) and the endmost planetary carrier (29) are ball bearings; bearing raceways are correspondingly processed on the inner gear ring.
8. The large-torque integrated planetary gear motor according to claim 1, wherein two water outlets are arranged on the reducer shell (21), and water nozzles (25) corresponding to the water outlets are arranged on the water outlets.
9. The high-torque integrated planetary gear motor according to claim 7, wherein a spiral water channel (26) is arranged on the reducer housing (21), and the spiral water channel (26) is communicated with the water nozzle (25).
10. A high torque integrated planetary gear motor according to claim 1, characterized in that the rear end of the motor housing (11) is connected to a rear flange (16), and the encoder is fixed to the motor output shaft using nuts.
CN202322538721.5U 2023-09-18 2023-09-18 Large-torque integrated planetary gear motor Active CN221081081U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202322538721.5U CN221081081U (en) 2023-09-18 2023-09-18 Large-torque integrated planetary gear motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202322538721.5U CN221081081U (en) 2023-09-18 2023-09-18 Large-torque integrated planetary gear motor

Publications (1)

Publication Number Publication Date
CN221081081U true CN221081081U (en) 2024-06-04

Family

ID=91272256

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202322538721.5U Active CN221081081U (en) 2023-09-18 2023-09-18 Large-torque integrated planetary gear motor

Country Status (1)

Country Link
CN (1) CN221081081U (en)

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