Conical rotor brake motor

Abstract

A kind of conical rotor brake motor, it includes shell, fixed mounting has stator in shell, rotor is inserted in stator, the left and right ends of shell are respectively fixedly connected with left end cover and right end cover 11, the right part of rotor is conical, the conical part (8) of rotor exposes the right end of stator, brake 9 is covered on the conical part, brake is cylindrical, brake is made of magnetic conductive metal material, its right end is closed, the closed part is cooperatively sheathed on the rotating shaft, brake can only move axially on the rotating shaft, the left end of brake has the taper matched with conical part, spring (10) is arranged in brake, spring is located between the right end face of conical part and the closed face of brake;The inner side of right end cover is provided with friction ring (12), and the closed face of brake can be attached to the annular face of friction ring.Effective results are that electromagnet is saved, brake device can be installed in shell, and the volume of brake motor is reduced;Motor is running, and the power consumption of electromagnet is saved, which is beneficial to energy saving.

Description

Technical Field

[0001] This utility model relates to a conical rotor brake motor. Background Technology

[0002] A brake motor can stop the rotor's rotation in a very short time when it stops running. Its existing structure includes a braking device mounted externally to the motor housing. This device consists of an electromagnet, a brake, and a spring. When the motor is energized, the electromagnet is simultaneously energized, attracting the spring and compressing it, releasing the brake and allowing the rotor to stop quickly. When the motor is de-energized, the electromagnet is de-energized, releasing the spring and causing the brake to clamp onto the rotor shaft, bringing the rotor to a rapid stop. Its drawbacks are that the braking device is mounted externally to the motor, occupying a large space; and the electromagnet continuously consumes electrical energy during motor operation. Utility Model Content

[0003] To reduce the power consumption and size of the brake motor during operation, this invention proposes a conical rotor brake motor.

[0004] The technical solution of the present invention is a conical rotor brake motor, which includes a housing 3, a stator 5 fixedly installed in the housing, a rotor 6 inserted in the stator, a left end cover 2 fixedly connected to the left end of the housing, and a right end cover 11 fixedly connected to the right end of the housing. The two ends of the rotor shaft 1 are supported by bearings in the left end cover and the right end cover, respectively. The rotor is characterized in that the right part of the rotor is conical, the conical part 8 of the rotor protrudes from the right end of the stator, and a brake 9 is covered on the conical part. The brake is cylindrical and made of magnetically conductive metal material. Its right end is closed, and the closed part fits onto the shaft. The brake can only move axially on the shaft. The left end of the brake has a taper that matches the conical part. A spring 10 is provided in the brake, and the spring 10 is located between the right end face of the conical part and the closed surface of the brake. A friction ring 12 is provided on the inner side of the right end cover, and the closed surface of the brake can be in contact with the annular surface of the friction ring.

[0005] The beneficial effects of this invention are that it eliminates the need for an electromagnet, allowing the braking device to be installed inside the housing and reducing the size of the brake motor; and during operation, the motor consumes no electrical energy from the electromagnet, which is beneficial for energy saving. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the structure of this utility model.

[0007] Attached diagram labels: 1-shaft, 2-left end cover, 3-casing, 4-bus ring, 5-stator, 6-rotor, 7-guide bar, 8-conical part, 9-brake, 10-spring, 11-right end cover, 12-friction ring, 13-bearing, 14-bar key. Detailed Implementation

[0008] A conical rotor brake motor includes a housing 3, a stator 5 fixedly installed in the housing, a rotor 6 inserted in the stator, a left end cover 2 fixedly connected to the left end of the housing, and a right end cover 11 fixedly connected to the right end of the housing. The rotor shaft 1 is supported at both ends in the left and right end covers by bearings 13, which are angular contact ball bearings or tapered roller bearings. Multiple guide bars 7 are embedded axially on the outer circle of the rotor, and a busbar 4 is connected to both ends of the guide bars 7.

[0009] Its features include a conical right side of the rotor, with the conical part 8 protruding from the right end of the stator. A brake 9 is mounted on the conical part. The brake is cylindrical and made of electrical pure iron. Its right end is closed, and the closed part fits onto the rotating shaft. The brake can only move axially on the rotating shaft. The left end of the brake has a taper that matches the conical part. A spring 10 is provided in the brake, and the spring 10 is located between the right end face of the conical part and the closed surface of the brake. A friction ring 12 is provided on the inner side of the right end cover 11, and the closed surface of the brake can be in contact with the ring surface of the friction ring.

[0010] Its working principle is as follows: after the motor is powered on, the stator generates a rotating magnetic field, which induces an electromotive force on the rotor's guide bars 7. The two ends of the guide bars are connected in parallel through a bus ring, and an induced current is generated in the guide bars. This induced current generates a magnetic field, in which the magnetic attraction force of the magnetic field in the conical part has an axial component. This axial component has an attractive effect on the brake, causing the brake's sealing surface to separate from the friction ring, while simultaneously compressing the spring in the brake. After the motor is powered off, the spring returns to its original position, and the spring force causes the brake's sealing surface to come into contact with the friction ring. The friction between them causes the motor rotor to stop rotating quickly.

[0011] The cone angle of the tapered portion 8 can be selected between 30 degrees and 90 degrees, preferably 60 degrees.

[0012] The brake can only move axially on the shaft and cannot rotate relative to it. The closed part and the shaft are splined, or a bar key 14 is provided between the closed part and the shaft.

[0013] The friction ring 12 can be installed on the inner side of the right end cover 11, or the friction ring can extend from the inner side of the right end cover 11.

Claims

1. A conical rotor brake motor, comprising a housing (3), a stator (5) fixedly installed in the housing, a rotor (6) inserted in the stator, a left end cover (2) fixedly connected to the left end of the housing, a right end cover (11) fixedly connected to the right end of the housing, and the rotor shaft (1) supported at both ends by bearings in the left end cover and the right end cover, characterized in that, The right side of the rotor is conical, and the conical part (8) of the rotor protrudes from the right end of the stator. A brake (9) is covered on the conical part. The brake is cylindrical and made of magnetic metal material. Its right end is closed, and the closed part fits on the rotating shaft. The brake can only move axially on the rotating shaft. The left end of the brake has a taper that matches the conical part. A spring (10) is provided in the brake. The spring is located between the right end face of the conical part and the closed surface of the brake. A friction ring (12) is provided on the inner side of the right end cover. The closed surface of the brake can be in contact with the ring surface of the friction ring.

2. The conical rotor brake motor according to claim 1, characterized in that, The cone angle of the tapered part (8) is 60 degrees.

3. The conical rotor brake motor according to claim 1, characterized in that, A bar key (14) is provided between the closed part and the rotating shaft.

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