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Outer-rotor electromagnetic brake

A technology of electromagnetic brakes and outer rotors, applied in electric brakes/clutches, electric components, electrical components, etc., can solve problems such as reliability reduction and wear, and achieve improved reliability, simple control methods, and improved efficiency and reliability. Effect

Inactive Publication Date: 2015-08-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of their functions are to stop the moving parts in a short time when the servo system issues a stop command, such as disc brakes and disc brakes used in electric vehicles, electromagnetic structure brakes used when elevators stop, etc.; Most of the current electromagnetic brakes are contact brakes, that is, the braking torque is generated through the action of the friction disc, and the friction disc will definitely wear out after long-term use, which will reduce the reliability of the system.

Method used

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  • Outer-rotor electromagnetic brake
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  • Outer-rotor electromagnetic brake

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] combined with figure 1 Explain, an outer rotor electromagnetic brake, its composition includes: annular excitation coil 1, inner stator 3, outer rotor 2, bearing 4, rear cover shell 6, and the outer wall of the inner stator 3 is provided with an annular groove , the inner surface of the annular groove is provided with an annular excitation coil 1 wound on the annular coil frame, the winding direction of the annular excitation coil 1 is perpendicular to the output shaft 4 of the motor, and the internal fixed The sub 3 is provided with an outer rotor 2, one side of the outer rotor 2 is connected with the rear cover shell 6 through a bearing 4, the outer rotor 2 is arranged in the motor casing 5, and the motor casing 5 One side of the inner stator 3 is detachably connected with the rear cover shell 6, and the inner stator 3 is connected with the rear cover shell 6. The outer rotor 2 is connected to the motor output shaft.

Embodiment 2

[0020] combined with figure 1 , 2 To illustrate, in the outer rotor electromagnetic brake described in Embodiment 1, a plurality of tooth slots are evenly distributed on the inner peripheral surface of the stator 2 and the outer peripheral surface of the rotor 3 respectively, and each tooth of the stator 2 The widths of the slots are equal, and the widths of the tooth slots of the rotor 3 are also equal.

Embodiment 3

[0023] Along the axial direction of the brake, the annular hollow structure in the axial middle section of the outer rotor and the inner stator is provided with an annular excitation coil, and the winding direction of the annular excitation coil is perpendicular to the axial direction. The number of slots must be the same. The number of slots designed for the brake in this paper is 16, and the number of slots in the circumferential direction of the outer rotor and inner stator can also be changed according to the design requirements; the energization mode of the annular excitation coil is DC; Both the sub and the toroidal winding coils are set coaxially.

[0024] The principle of the invention to generate the braking torque is to use the reluctance torque generated after the excitation coil is fed with direct current, and at the same time, the outer rotor and the inner stator are mechanically non-contact, which improves the efficiency and reliability of the system. The inven...

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Abstract

An outer-rotor electromagnetic brake is disclosed. The invention relates to the outer-rotor electromagnetic brake. An electromagnetic brake is a contact-type brake which generates braking torque through an effect of a friction disc. The friction disc will be abrased after long time usage so that system reliability is reduced. An annular excitation coil (1) which is winded on an annular coil rack is arranged on an inner stator (3). A winding direction of the annular excitation coil (1) is vertical to a motor output shaft (4). An outer rotor (2) is arranged on the inner stator (3). A motor shell (5) is arranged on the outer rotor (2). The outer rotor (2) is arranged on the motor output shaft (4). A left side of the motor shell (5), a left side of the inner stator (3), a left side of the outer rotor (2) and the motor output shaft (4) are connected to a rear end cover (6) through screws (7). The invention relates to the electromagnetic brake.

Description

technical field [0001] The invention relates to an outer rotor electromagnetic brake. Background technique [0002] With the development of the field of automatic control, many new brake structures have emerged. Most of their functions are to stop the moving parts in a short time when the servo system issues a stop command, such as disc brakes and disc brakes used in electric vehicles, electromagnetic structure brakes used when elevators stop, etc.; Most of the current electromagnetic brakes are contact brakes, that is, the braking torque is generated through the action of the friction disc, and the friction disc will definitely wear out after long-term use, which will reduce the reliability of the system. Contents of the invention [0003] The purpose of the present invention is to provide a non-contact type between the outer rotor and the inner stator, which avoids the effect of friction, and at the same time, the structure of the brake is an outer rotor structure, whic...

Claims

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Application Information

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IPC IPC(8): H02K49/00
Inventor 邹继斌禹国栋徐永向李勇尚静胡建辉刘承军赵猛江善林赵博王骞
Owner HARBIN INST OF TECH