CN106300707B

CN106300707B - Rotary drum type eddy current retarder stator support assembly

Info

Publication number: CN106300707B
Application number: CN201610749959.4A
Authority: CN
Inventors: 付冠东; 蒋海云; 许攀羽; 王宇雨; 刘超; 王军
Original assignee: Anhui Ankai Automobile Co Ltd
Current assignee: Anhui Ankai Automobile Co Ltd
Priority date: 2016-08-28
Filing date: 2016-08-28
Publication date: 2020-10-23
Anticipated expiration: 2036-08-28
Also published as: CN106300707A

Abstract

The invention relates to a stator support assembly of a rotary drum type eddy current retarder, which comprises a transition support, a magnetic conduction support arranged on the periphery of the transition support and an installation support arranged on the inner peripheral side of the transition support, wherein a plurality of convex teeth protruding outwards in the radial direction are uniformly distributed on the periphery of the magnetic conduction support, a wire slot is formed between every two adjacent convex teeth, and the magnetic conduction support is formed by laminating a plurality of thin magnetic conduction steel plates. The invention cancels the components of an iron core, a coil frame and the like of the traditional rotary drum type eddy current retarder, saves materials, adopts thin high-permeability material steel plates to be laminated into the stator permeability part, greatly increases the permeability of the stator, improves the braking torque, reduces the whole length of the eddy current retarder, and reduces the weight and the manufacturing cost.

Description

Rotary drum type eddy current retarder stator support assembly

Technical Field

The invention relates to the technical field of automotive retarders, in particular to a stator support assembly of a rotary drum type eddy current retarder.

Background

The eddy current retarder is a relatively independent and sensitive auxiliary automobile braking device, and utilizes the electromagnetic principle to convert the kinetic energy of automobile running into heat energy to be dissipated, thereby realizing the functions of speed reduction and braking. With the improvement of safety requirements, the development of the eddy current retarder is concerned domestically. One of them is a drum type eddy current retarder. The rotary drum type eddy current retarder has the remarkable advantages of compact and reasonable structure, light weight, small external dimension and convenient assembly and disassembly. The magnetic field is radially distributed, the working face is changed from the traditional axial end face into a radial encircling end face, the gap between the rotor and the stator is fixed, and the gap does not need to be adjusted during installation. However, the stator is surrounded by the rotor, the heat dissipation is poor, the heat fading is serious, the temperature of the iron core cannot be dissipated, and the braking performance is reduced due to the temperature rise. The stator bracket is generally made of steel with poor magnetic conductivity through casting or machining, the temperature rises with the continuous action of the magnetic field, the magnetic conductivity is reduced more obviously, and the braking torque is reduced. The stator coil is generally wound on a coil framework made of plastic materials, the size of the coil is much larger than that of an ideal coil framework, so that the resistance is increased quickly due to the increase of the resistance of the coil and the heat conduction difference of the coil framework, the current of the coil is reduced, and the braking torque is reduced. In the traditional structure, a coil, an iron core, a magnetic conduction plate and the like are assembled together, and the processing error can also cause the magnetic resistance of a magnetic circuit to be increased, so that the braking torque ratio of the retarder is smaller than that calculated.

Disclosure of Invention

The invention aims to provide a stator bracket assembly of a drum type eddy current retarder, wherein a magnetic conduction part of the bracket assembly is of an integral structure and is formed by laminating thin plate materials with good magnetic conduction performance, parts such as a coil framework, a stator core, a magnetic conduction plate and the like are eliminated, and a coil is directly wound on the magnetic conduction bracket, so that the magnetic conduction performance of the stator part can be greatly improved, and the braking torque of the drum type eddy current retarder is improved.

In order to achieve the purpose, the invention adopts the following technical scheme: the magnetic conduction bracket comprises a transition bracket, a magnetic conduction bracket arranged on the periphery of the transition bracket and a mounting bracket arranged on the inner peripheral side of the transition bracket, wherein a plurality of convex teeth protruding outwards in the radial direction are uniformly distributed on the periphery of the magnetic conduction bracket, a wire groove is formed between every two adjacent convex teeth, and the magnetic conduction bracket is formed by laminating a plurality of thin magnetic conduction steel plates.

As a further improvement of the above technical solution:

the magnetic conduction support and the transition support are in interference fit, a plurality of convex keys are uniformly arranged on the inner periphery of the magnetic conduction support, and key grooves matched with the convex keys are formed in the outer periphery of the transition support.

The installing support comprises a plurality of edges earboards which are evenly distributed on the inner circumference of the transition support, and installing holes are formed in the earboards.

The number of the convex teeth is even, and the convex teeth are the winding center of the stator coil of the buffer.

The mounting bracket and the transition bracket are of an integrated structure.

According to the technical scheme, the iron core, the coil framework and other parts of the traditional rotary drum type eddy current retarder are omitted, materials are saved, the thin high-permeability material steel plate is adopted to be laminated into the stator permeability part, the permeability of the stator is greatly improved, the braking torque is improved, the overall length of the eddy current retarder is reduced, and the weight and the manufacturing cost are reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a magnetically conductive support of the present invention;

fig. 3 is a schematic structural view of the transition support of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

as shown in fig. 1 to 3, the stator bracket assembly of the drum-type eddy current retarder of the present embodiment includes a transition bracket 1, a magnetic conduction bracket 2 disposed on the periphery of the transition bracket 1, and a mounting bracket 3 disposed on the inner peripheral side of the transition bracket 1, wherein a plurality of convex teeth 21 protruding outward in the radial direction are uniformly distributed on the periphery of the magnetic conduction bracket 2, the number of the convex teeth 21 is even, a wire slot 22 is formed between adjacent convex teeth 21, and the convex teeth 21 are the winding center of the stator coil of the buffer. The magnetic conduction support 2 is formed by laminating a plurality of thin magnetic conduction steel plates, and in the embodiment, the mounting support and the transition support are of an integrated structure.

The magnetic conduction support 2 and the transition support 1 are in interference fit, a plurality of convex keys 23 are uniformly arranged on the inner periphery of the magnetic conduction support 2, and key grooves 11 matched with the convex keys 23 are arranged on the outer periphery of the transition support 1. The mounting bracket 3 is composed of a plurality of ear plates which are uniformly distributed along the inner periphery of the transition bracket 1, and mounting holes 31 are arranged on the ear plates. During installation, a thin insulating paper is padded in a wire slot of the magnetic conduction support 2, the enameled wire is directly wound on the convex teeth 21, and then the magnetic conduction support 2 and the coil are integrally insulated and then installed together with the transition support 1.

The magnetic conduction bracket 2 is of an integral structure and is formed by laminating thin plate materials with good magnetic conduction performance, components such as a coil framework, a stator iron core, a magnetic conduction plate and the like of the traditional rotary drum type eddy current retarder are eliminated, a coil is directly wound on the convex teeth 21 of the magnetic conduction bracket 2, materials are saved, a thin high magnetic conduction material steel plate is adopted to be laminated into a stator magnetic conduction part, the magnetic conduction performance of a stator is greatly improved, the braking torque is improved, the integral length of the eddy current retarder is reduced, and the weight and the manufacturing cost are reduced.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims

1. The utility model provides a rotary drum formula eddy current retarder stator support assembly which characterized in that: the magnetic conduction bracket comprises a transition bracket (1), a magnetic conduction bracket (2) arranged on the periphery of the transition bracket (1) and a mounting bracket (3) arranged on the inner peripheral side of the transition bracket (1), wherein a plurality of convex teeth (21) protruding outwards in the radial direction are uniformly distributed on the periphery of the magnetic conduction bracket (2), and a wire slot (22) is formed between every two adjacent convex teeth (21);

the magnetic conduction support (2) and the transition support (1) are in interference fit, a plurality of convex keys (23) are uniformly arranged on the inner periphery of the magnetic conduction support (2), and key grooves (11) matched with the convex keys (23) are arranged on the outer periphery of the transition support (1);

the magnetic conduction bracket (2) is of an integral structure and is formed by laminating a plurality of thin magnetic conduction steel plates;

the mounting bracket (3) consists of a plurality of ear plates which are uniformly distributed along the inner periphery of the transition bracket (1), and mounting holes (31) are formed in the ear plates;

the number of the convex teeth (21) is even;

the mounting bracket (3) and the transition bracket (1) are of an integrated structure;

during installation, insulating paper is padded in a wire slot of the magnetic conduction support (2), the enameled wire is directly wound on the convex teeth (21), and the magnetic conduction support (2) and the coil are integrally insulated and then installed together with the transition support (1).