Roller motor

Abstract

The utility model relates to a roller motor, which comprises a tubular roller, roller supports are respectively arranged in two ends of the roller, end covers are respectively arranged at two ends of the roller, a rotor is arranged on the inner wall of the roller and between the adjacent end covers and the roller supports, and the rotor comprises a plurality of permanent magnets directly arranged on the inner wall of the roller. A hollow motor shaft is installed in the roller support and the adjacent end cover, stators are installed on the hollow motor shaft and located between the adjacent end cover and the roller support, the center of each rotor corresponds to one stator, the side walls of the two ends of the hollow motor shaft are each provided with a shaft side wire outlet hole, and the shaft side wire outlet holes are communicated with a cavity in the center of the hollow motor shaft. The roller driving mechanism has the advantages that the stator is mounted on the hollow motor shaft, the rotor is directly mounted on the inner wall of the roller, the stator is powered on to generate a magnetic field to drive the rotor and the roller to rotate, mounting space outside the roller is saved, parts and weight of the roller driving mechanism are reduced, and production difficulty and maintenance difficulty are reduced.

Description

Technical Field

[0001] The utility model relates to the field of motors, in particular to a drum motor. Background Art

[0002] For roller rotating equipment, the roller rotation and load transmission belt are generally driven by a separate electric motor after deceleration. The power of the roller depends entirely on the external connection of the motor + reducer. The rotation mode of the roller and the roller with external power source requires a large installation space for the motor and reducer, which affects the installation. The motor diameter or the height of the reducer may exceed the height of the conveyor belt, which may affect the transportation of objects exceeding the width of the conveyor belt on the conveyor belt.

[0003] Another way to rotate the drum is to match the motor and the reducer, install them inside the drum, and realize the rotation of the drum. In the transmission method of the structure in which the motor and the reducer are installed inside the drum, the weight of the drum is very heavy. Since the reducer gears require oil and the drum requires sealing, the difficulty of drum production and manufacturing is increased. If there is a fault in the internal structure or parts, the entire drum will be scrapped, resulting in serious waste. Utility Model Content

[0004] The purpose of the utility model is to overcome the above problems existing in the prior art and provide a drum motor.

[0005] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0006] A drum motor comprises a cylindrical drum, wherein a circular drum bracket is respectively installed inside the two ends of the drum, and a circular end cover is respectively installed at the two ends of the drum. A rotor is installed on the inner wall of the drum between the adjacent end covers and the drum bracket, and the rotor comprises a plurality of permanent magnets arranged in a circular array and directly installed on the inner wall of the drum. A hollow motor shaft is installed between the drum bracket and the adjacent end covers, and a stator is installed on the hollow motor shaft between the adjacent end covers and the drum bracket, and each rotor center corresponds to a stator, and a shaft side outlet hole is respectively opened on the side walls of the two ends of the hollow motor shaft, and the shaft side outlet hole is connected with the cavity in the center of the hollow motor shaft, and one end of the power supply line of the stator passes through the shaft side outlet hole and the cavity in the center of the hollow motor shaft in sequence and then extends out of the hollow motor shaft.

[0007] Wherein, a first ball bearing is installed at the center of each roller bracket, a second ball bearing is installed at the center of each end cover, and the hollow motor sleeve is in the inner ring of the first ball bearing and the inner ring of the second ball bearing.

[0008] Wherein, a sealing ring is installed at the center of the end cover, and the hollow motor shaft is sleeved in the sealing ring.

[0009] Wherein, the rotor is provided with a plurality of permanent magnets arranged in a ring array.

[0010] Wherein, the stator is provided with a plurality of coil windings arranged in a circular array.

[0011] The axial length of the rotor is equal to the axial length of the stator, and two ends of the stator are aligned with two ends of an adjacent rotor respectively.

[0012] Wherein, the central axis of the shaft-side wire outlet hole and the central axis of the hollow motor shaft are perpendicular to each other.

[0013] The beneficial effects of the utility model are as follows: the stator is mounted on the hollow motor shaft, the rotor is directly mounted on the inner wall of the drum, the stator is energized to generate a magnetic field to drive the rotor and the drum to rotate, thus saving installation space outside the drum, reducing the parts and weight of the drum drive mechanism, and reducing the difficulty of production and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0015] Figure 1 It is a cross-sectional view of the drum motor in the utility model;

[0016] Figure 2 It is a side view of the drum motor in the utility model;

[0017] Explanation of the reference numerals in the figure: roller 1, roller bracket 2, first ball bearing 3, end cover 4, second ball bearing 5, hollow motor shaft 6, rotor 7, stator 8, cavity 9, shaft side wire outlet hole 10, sealing ring 11. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0019] like Figure 1 and Figure 2 As shown, a drum motor comprises a cylindrical drum 1, wherein a circular drum bracket 2 is respectively installed inside the two ends of the drum, a first ball bearing 3 is installed at the center of each drum bracket 2, and a circular end cover 4 is respectively installed at the two ends of the drum 1, and a second ball bearing 5 is installed at the center of each end cover 4.

[0020] A hollow motor shaft 6 is installed between the drum bracket 2 and the adjacent end cover 4. The hollow motor shaft 6 is sleeved in the inner ring of the first ball bearing 3 and the inner ring of the second ball bearing 5 to ensure the smoothness of relative rotation between the drum bracket 2 and the hollow motor shaft 6.

[0021] A rotor 7 is installed on the inner wall of the drum 1 between the adjacent end cover 4 and the drum bracket 2, and the rotor 7 includes a plurality of permanent magnets arranged in a circular array and directly installed on the inner wall of the drum; a stator 8 is installed on the hollow motor shaft 6 between the adjacent end cover 4 and the drum bracket 2, and a plurality of coil windings arranged in a circular array are provided on the stator 8; there is a stator 8 corresponding to the center of each rotor 7, the axial length of the rotor 7 is equal to the axial length of the stator 8, and the two ends of the stator 8 are respectively aligned with the two ends of the adjacent rotor 7.

[0022] A shaft side outlet hole 10 is respectively opened on the side walls at both ends of the hollow motor shaft 6, and the shaft side outlet hole 10 is connected to the cavity 9 in the center of the hollow motor shaft 6. The central axis of the shaft side outlet hole 10 and the central axis of the hollow motor shaft 6 are perpendicular to each other. One end of the power supply line of the stator 8 passes through the shaft side outlet hole 10 and the cavity 9 in the center of the hollow motor shaft 6 in sequence and then extends out of the hollow motor shaft 6.

[0023] A sealing ring 11 is installed at the center of the end cover 4 , and the hollow motor shaft 6 is sleeved in the sealing ring 11 to prevent liquid and dust from entering the drum 1 through the gap between the end cover 4 and the hollow motor shaft 6 .

[0024] The stator is installed on the hollow motor shaft and the rotor is directly installed on the inner wall of the drum. When the stator is energized, a magnetic field is generated to drive the rotor and the drum to rotate. This solves the problem that the external power source of the drum occupies a large installation space and affects the transportation of extra-wide parts. It also solves the problem of the heavy weight of the built-in motor and reducer and the difficulty in production. It also solves the problem of difficult maintenance.

[0025] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A drum motor, characterized in that: It comprises a cylindrical drum, wherein a circular drum bracket is respectively installed inside the two ends of the drum, and a circular end cover is respectively installed at the two ends of the drum. A rotor is installed on the inner wall of the drum between the adjacent end covers and the drum bracket, and the rotor comprises a plurality of permanent magnets arranged in a circular array and directly installed on the inner wall of the drum. A hollow motor shaft is installed in the drum bracket and the adjacent end covers, and a stator is installed on the hollow motor shaft between the adjacent end covers and the drum bracket, and each of the rotor centers corresponds to a stator, and a shaft side outlet hole is respectively opened on the side walls of the two ends of the hollow motor shaft, and the shaft side outlet hole is connected with the cavity in the center of the hollow motor shaft, and one end of the power supply line of the stator passes through the shaft side outlet hole and the cavity in the center of the hollow motor shaft in sequence and then extends out of the hollow motor shaft.

2. The drum motor according to claim 1, characterized in that: A first ball bearing is installed at the center of each roller bracket, a second ball bearing is installed at the center of each end cover, and the hollow motor sleeve is in the inner ring of the first ball bearing and the inner ring of the second ball bearing.

3. The drum motor according to claim 1, characterized in that: A sealing ring is installed at the center of the end cover, and the hollow motor shaft is sleeved in the sealing ring.

4. The drum motor according to claim 1, characterized in that: The stator is provided with a plurality of coil windings arranged in a circular array.

5. The drum motor according to claim 1, characterized in that: The axial length of the rotor is equal to the axial length of the stator, and two ends of the stator are respectively aligned with two ends of an adjacent rotor.

6. The drum motor according to claim 1, characterized in that: The central axis of the shaft-side wire outlet hole is perpendicular to the central axis of the hollow motor shaft.

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