CN210724456U

CN210724456U - Inner rotor servo electric roller

Info

Publication number: CN210724456U
Application number: CN201921894510.2U
Authority: CN
Inventors: 欧阳庆生; 李功燕; 祝宇
Original assignee: Zhongke Weizhi Intelligent Manufacturing Technology Jiangsu Co Ltd
Current assignee: Zhongke Weizhi Technology Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-06-09
Anticipated expiration: 2029-11-05

Abstract

The utility model relates to an inner rotor servo electric roller, which comprises a roller, an inner rotor motor and a planetary reducer, wherein the inner rotor motor and the planetary reducer are arranged in the roller; the method is characterized in that: the roller comprises a roller body, a front shaft, a roller front end cover, a rotating wheel, a rear shaft and a roller rear end cover, wherein the roller front end cover and the roller rear end cover are fixedly arranged at two end parts of the roller body; the inner rotor motor comprises a motor shell, a stator punching sheet, a rotor punching sheet, magnetic steel, a rotor shaft, a motor front end cover and a motor rear end cover, wherein two ends of the rotor shaft are rotatably supported on the motor front end cover and the motor rear end cover, the rotation of the rotor shaft is output through an output shaft of a planetary reducer, and the output shaft of the planetary reducer is supported through the front end shaft. The utility model discloses can reduce the inertia of motor, reduce the vibration of motor through dynamic balance, save external servo motor's installation space, provide the installation effectiveness of equipment.

Description

Inner rotor servo electric roller

Technical Field

The utility model relates to a conveyer motor cylinder, especially an inner rotor servo motor cylinder.

Background

At present, an electric roller applied to a conveyor is a main power source of the conveyor, and the structure of the electric roller comprises an external servo motor, a direct drive type outer rotor motor, a built-in inner rotor motor and the like.

The servo motor is external, i.e. the motor and the speed reducer are installed outside the roller, and the output shaft of the speed reducer is connected with the roller through a belt to provide power, so that the servo motor has the defects of large occupied space and high noise. The outer rotor motor is directly driven, namely the outer rotor motor is arranged in a roller, the roller is a rotor of the motor, the rotor is directly driven by a reducer motor, and the roller has the defects that the rotational inertia of the motor is large, and the vibration generated by the torque pulsation of the permanent magnet synchronous motor is difficult to adjust through dynamic balance.

The built-in inner rotor motor type, namely, an inner rotor motor and a reduction gearbox are installed in a roller, and an output shaft of the reduction gearbox is connected with the roller to provide power.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of existence among the prior art, providing an inner rotor servo electric cylinder, can reduce the inertia of motor, can reduce the vibration of motor through dynamic balance, can save external servo motor's installation space, provide the installation effectiveness of equipment.

According to the technical scheme provided by the utility model, the inner rotor servo electric roller comprises a roller, an inner rotor motor and a planetary reducer, wherein the inner rotor motor and the planetary reducer are arranged in the roller; the method is characterized in that: the roller comprises a roller body, a front shaft, a roller front end cover, a rotating wheel, a rear shaft and a roller rear end cover, wherein the roller front end cover and the roller rear end cover are fixedly arranged at two end parts of the roller body; the inner rotor motor comprises a motor shell, a stator punching sheet, a rotor punching sheet, magnetic steel, a rotor shaft, a motor front end cover and a motor rear end cover, wherein two ends of the rotor shaft are rotatably supported on the motor front end cover and the motor rear end cover, the rotation of the rotor shaft is output through an output shaft of a planetary reducer, and the output shaft of the planetary reducer is supported through the front end shaft.

Furthermore, an output shaft of the planetary reducer is fixedly connected with a central shaft of the rotating wheel, the rotating wheel is fixedly connected with the front end cover of the roller, the central shaft of the rotating wheel is in rotating fit with the front shaft through a bearing, and the front shaft extends out of the front end cover of the roller.

Further, still include rotary encoder, rotary encoder installs on inner rotor motor.

Further, rotary encoder fixed mounting is at the motor rear end cover, rotor shaft and rotary encoder fixed connection, and rotary encoder is transmitted in the rotation of rotor shaft, and rotary encoder's detected signal transmits to servo driver.

Further, a certain gap exists between the outer diameter of the inner rotor motor and the inner wall of the roller cylinder.

Further, the front end cover of the roller and the rear end cover of the roller are fixed with the roller body in an interference fit mode.

Further, the front shaft and the rear shaft are respectively in running fit with the roller barrel through bearings.

Furthermore, the motor front end cover and the motor rear end cover are in rotating fit with the rotor shaft through bearings, so that the rotor shaft can freely rotate relative to the motor shell.

The utility model discloses following beneficial effect has:

1. the utility model discloses can reduce the inertia of cylinder, inner rotor motor can reduce the vibration of motor through dynamic balance.

2. The utility model discloses an adopt the synchronous inner rotor motor of permanent magnetism among the servo electric cylinder of inner rotor, compare the defect that current asynchronous inner rotor electric cylinder of three-phase calorific capacity is high, the utility model discloses calorific capacity is little, need not pour into the coolant liquid into, can avoid the risk of electric cylinder oil leak.

3. The utility model discloses use planetary reducer, can improve the output moment of torsion of electric cylinder.

4. The utility model discloses simplified external servo motor and hold-in range driven mounting structure, improve equipment's installation effectiveness and the availability factor of motor.

Drawings

Fig. 1 is a schematic structural view of the inner rotor servo electric roller of the present invention.

Description of reference numerals: 1-a roller; 11-a drum body; 12-front axle; 13-front end cover of the roller; 14-a rotating wheel; 15-rear axle; 16-drum rear end cover; 2-an inner rotor motor; 21-motor casing; 22-stator punching; 23-rotor punching; 24-magnetic steel; 25-a rotor shaft; 26-rotor end cover; 27-motor front end cover; 28-motor rear end cap; 29-encoder cap; 3-a planetary reducer; 4-rotary encoder.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

As shown in fig. 1, the inner rotor servo electric drum of the present invention comprises a drum 1, an inner rotor motor 2, a planetary reducer 3 and a rotary encoder 4, wherein the rotary encoder 4 is installed on the inner rotor motor 2, and the inner rotor motor 2 and the planetary reducer 3 are installed in the drum 1; the roller 1 comprises a roller barrel body 11, a front shaft 12, a roller front end cover 13, a rotating wheel 14, a rear shaft 15 and a roller rear end cover 16, wherein the roller front end cover 13 and the roller rear end cover 16 are fixedly arranged at two ends of the roller barrel body 11, the roller front end cover 13 and the roller rear end cover 16 are fixedly in interference fit with the roller barrel body 11, the rotating wheel 14 is fixedly arranged on the roller front end cover 13 through bolts, the roller barrel body 11 is supported through the front shaft 12 and the rear shaft 15, and the front shaft 12 and the rear shaft 15 are respectively in running fit with the roller barrel body 11 through bearings; inner rotor motor 2 includes motor casing 21, stator punching 22, rotor punching 23, magnet steel 24, rotor shaft 25, rotor end cover 26, motor front end housing 27, motor rear end housing 28 and encoder lid 29, rotor shaft 25's both ends are rotated and are supported on motor front end housing 27 and motor rear end housing 28, motor front end housing 27 and motor rear end housing 28 pass through bearing and rotor shaft 25 normal running fit, make rotor shaft 25 freely rotate relative to motor casing 21, rotor shaft 25's rotation is through the output shaft output of planetary reducer 3, planetary reducer 3's output shaft passes through front axle 12 and supports, specifically: an output shaft of the planetary reducer 3 is connected with a central shaft of a rotating wheel 14 through a common flat key, the rotating wheel 14 is connected with a roller front end cover 13 through a bolt, the roller front end cover 13 is fixedly installed at the end part of a roller body 11, the central shaft of the rotating wheel 14 is in rotating fit with a front shaft 12 through a bearing, and the front shaft 12 extends out of the roller front end cover 13.

As a further improvement of this embodiment, the inner rotor servo electric drum of the present invention further includes a rotary encoder 4; the rotary encoder 4 is fixedly arranged on a rear end cover 28 of the motor, the rotor shaft 25 is connected with the rotary encoder 4 through bolts, and the rotation of the rotor shaft 25 is transmitted to the rotary encoder 4; the rotary encoder 4 is used for detecting the rotating speed and the rotating angle of the roller barrel 11 and transmitting the detected signals to the servo driver, so that automatic control can be realized.

As a further improvement of this embodiment, there is a certain gap between the outer diameter of the inner rotor motor 2 and the inner wall of the drum body 11.

The theory of operation of the servo electric cylinder of inner rotor: the utility model discloses an external servo motor's installation space can be practiced thrift to interior rotor motor cooperation planetary reducer 3 of permanent magnetism. When the planetary reducer works, the motor rotor shaft 25 rotates, and the motor rotor shaft 25 drives the planetary reducer 3 to rotate; an output shaft of the planetary reducer 3 drives a rotating wheel 14 to rotate, the rotating wheel 14 is fixed relative to a roller front end cover 13, and the roller front end cover 13 is fixed relative to a roller body 11. The utility model discloses an adopt the synchronous inner rotor motor of permanent magnetism in the servo electric cylinder of inner rotor, compare the defect that current three-phase asynchronous inner rotor electric cylinder calorific capacity is high, the utility model discloses calorific capacity is little, need not pour into the coolant liquid into, can avoid the risk of electric cylinder oil leak to use planetary reducer, can improve the output torque of electric cylinder; the permanent magnet synchronous inner rotor motor can effectively reduce the rotational inertia of the motor, and the inner rotor motor can reduce the vibration of the motor through dynamic balance. Simultaneously the utility model discloses simplify external servo motor and hold-in range driven mounting structure, improve equipment's installation effectiveness.

Claims

1. An inner rotor servo electric roller comprises a roller (1), an inner rotor motor (2) and a planetary reducer (3), wherein the inner rotor motor (2) and the planetary reducer (3) are arranged in the roller (1); the method is characterized in that: the roller (1) comprises a roller barrel body (11), a front shaft (12), a roller front end cover (13), a rotating wheel (14), a rear shaft (15) and a roller rear end cover (16), wherein the roller front end cover (13) and the roller rear end cover (16) are fixedly arranged at two ends of the roller barrel body (11), the rotating wheel (14) is fixedly arranged on the roller front end cover (13), and the roller barrel body (11) is rotatably supported through the front shaft (12) and the rear shaft (15); inner rotor motor (2) include motor casing (21), stator punching (22), rotor punching (23), magnet steel (24), rotor shaft (25), motor front end housing (27) and motor rear end housing (28), and the both ends rotation of rotor shaft (25) is supported on motor front end housing (27) and motor rear end housing (28), and the output shaft output of planetary reducer (3) is passed through in the rotation of rotor shaft (25), and the output shaft of planetary reducer (3) passes through front axle (12) and supports.

2. The inner rotor servo cylinder of claim 1, wherein: the output shaft of the planetary reducer (3) is fixedly connected with the central shaft of the rotating wheel (14), the rotating wheel (14) is fixedly connected with the front end cover (13) of the roller, the central shaft of the rotating wheel (14) is in running fit with the front shaft (12) through a bearing, and the front shaft (12) extends out of the front end cover (13) of the roller.

3. The inner rotor servo cylinder of claim 1, wherein: the rotor is characterized by further comprising a rotary encoder (4), wherein the rotary encoder (4) is installed on the inner rotor motor (2).

4. The inner rotor servo cylinder of claim 3, wherein: rotary encoder (4) fixed mounting is in motor rear end cover (28), rotor shaft (25) and rotary encoder (4) fixed connection, and rotary encoder (4) are transmitted in the rotation of rotor shaft (25), and rotary encoder (4)'s detection signal transmits to servo driver.

5. The inner rotor servo cylinder of claim 1, wherein: a certain gap is formed between the outer diameter of the inner rotor motor (2) and the inner wall of the roller cylinder (11).

6. The inner rotor servo cylinder of claim 1, wherein: the front end cover (13) and the rear end cover (16) of the roller are fixed with the roller body (11) in an interference fit manner.

7. The inner rotor servo cylinder of claim 1, wherein: the front shaft (12) and the rear shaft (15) are respectively in running fit with the roller barrel (11) through bearings.

8. The inner rotor servo cylinder of claim 1, wherein: the motor front end cover (27) and the motor rear end cover (28) are in running fit with the rotor shaft (25) through bearings, so that the rotor shaft (25) can freely rotate relative to the motor shell (21).