a brake

A technology of brakes and joints, applied in the direction of brake types, axial brakes, brake parts, etc., can solve the problems of reducing transmission efficiency, complicated burr process, increasing drag loss of friction plates, etc., and achieves the goal of improving efficiency and reducing drag loss Effect

Active Publication Date: 2018-11-06
SHAANXI FAST GEAR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two types of traditional brake lubrication. One is to open a lubricating oil hole on the piston and use the pressure oil in the working chamber to lubricate the friction plate. This method makes it very difficult to precisely control the oil pressure in the working chamber; the other One is to open a radial hole on the ring gear, throw the lubricating oil for lubricating the planetary gear system onto the friction plate, and perform normal lubrication. This method increases the drag loss of the friction plate, reduces the transmission efficiency, and the ring gear The deburring process on the spline is complex and costly

Method used

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing, the implementation process of the present invention is described in further detail:

[0029] see Figure 1 to Figure 6 , the brake includes a back plate housing 1 and a piston housing 11, which are connected together by fasteners 17 and form a friction plate installation space, in which the dual plates 7 and friction plates 8 are alternately arranged, and the dual plates 7 pass through it The second spline tooth 71 is installed in the keyway 113 on the piston housing 11; the friction plate 8 is composed of the middle base body 82 and the friction material 81 attached to both sides, and is installed on the inner spline tooth through the inner spline tooth on the middle base body 82. On the ring gear 10 , the ring gear 10 is axially positioned according to a method known in the industry, and a flow equalization plate 6 is installed between the outermost dual plate and the back plate housing 1 .

[0030] An oil inlet groove ...

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Abstract

The invention discloses a brake. The brake comprises a back plate shell body and a piston shell body which are connected together by fasteners. Pairing slices and friction slices are arranged alternatively in an installation space defined by the back plate shell body and the piston shell body. The pairing slices are installed in a key groove of the piston shell body through a first spline tooth on the pairing slice. Each friction slice comprises a base body located in the center and friction material arranged at both sides of the base body. The friction slice is mounted on a gear ring through an internal spline gear of the base body. A flow balance plate is arranged between the pairing slice at the outermost side and the back plate shell body. According to the brake, through the adding of the flow balance plate between the back plate shell body and the pairing slices, lubricating oil flow balance in the circumferential direction between the pairing slices and the friction slices is achieved. Because the lubricating oil circuit is an independent oil circuit, the lubricating oil circuit is controllable, when it is not needed to lubricate the brake, the lubricating oil circuit can be closed to reduce drag loss, and enhance the efficiency of a transmission.

Description

technical field [0001] The invention belongs to the field of transmissions, and in particular relates to a brake. Background technique [0002] Brakes are key components on automatic transmissions. The control precision of the brake is related to the shifting comfort of the vehicle, and the lubrication of the brake is related to the life of the transmission. There are two types of traditional brake lubrication. One is to open a lubricating oil hole on the piston and use the pressure oil in the working chamber to lubricate the friction plate. This method makes it very difficult to precisely control the oil pressure in the working chamber; the other One is to open a radial hole on the ring gear, throw the lubricating oil for lubricating the planetary gear system onto the friction plate, and perform normal lubrication. This method increases the drag loss of the friction plate, reduces the transmission efficiency, and the ring gear The deburring process on the spline is comple...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D55/22F16D65/02F16D65/14F16N1/00F16D121/04
CPCF16D55/22F16D65/02F16D65/14F16D2121/04F16N1/00
Inventor 邱辉鹏严鉴铂刘义王亚锋张海涛
Owner SHAANXI FAST GEAR CO
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