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Integrated low-latency intermediate shaft brake

A technology of brakes and intermediate shafts, applied in the directions of brakes, brake types, brake components, etc. in the axial direction, can solve the problems of inconvenient assembly and maintenance of the transmission assembly, long response time to release the brake, and difficult to accurately control, etc. Improve the convenience of assembly and maintenance, improve the system response speed, and the effect of strong adaptability

Active Publication Date: 2022-03-25
FAW JIEFANG AUTOMOTIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing intermediate shaft brakes used at home and abroad have a long response time for releasing the brake, are not easy to control accurately, and are prone to "over-braking phenomenon", resulting in gear shift failure
[0003] In addition, the intermediate shaft brakes used at home and abroad are mostly split, that is, parts such as friction plates and steel plates need to be assembled to the transmission assembly in a scattered manner.
As a result, the assembly and maintenance of the transmission assembly are inconvenient

Method used

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  • Integrated low-latency intermediate shaft brake
  • Integrated low-latency intermediate shaft brake

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Embodiment Construction

[0023] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] Such as figure 1 As shown, the brake is mounted on the front end of the intermediate shaft 15 of the transmission. The quick-release valve spool 3 is placed in the brake housing 8, and the brake housing 8 has an air circuit 801, an air circuit 802, and an air circuit 803. The steel ball 16 is used to block one end of the air circuit 801 so that it does not leak out. gas. The O-shaped sealing ring 2 is put into the ring groove of the exhaust plug 4 of the quick-release valve, and placed together in the brake housing 8, and the small snap ring 1 acts as a limiter. The ejector pin 17 is pressed into the piston 6, the guide ring 5 and two Y-shaped sealing rings 7 are installed in the ring groove of the piston 6, and the two Y-shaped sealing rings 7 are placed back to back and placed in the brake housing 8 together; The steel sheet 11 and...

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PUM

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Abstract

The invention relates to an integrated low-delay intermediate shaft brake, which is installed at the front end of the intermediate shaft of a transmission, and includes a brake housing connected with the transmission housing. The brake housing has three air passages, and one end of the air passage I is blocked. , a quick-release valve, a piston, 5 friction plates, 5 steel plates, and a top pin pressed into the piston are arranged in the brake housing; a quick-release valve device with a simple structure is integrated in the control air circuit of the present invention. , the exhaust of the brake cylinder is no longer controlled by the brake solenoid valve, but is directly exhausted by the quick release valve, which shortens the lag time of releasing the brake and improves the system response speed; the invention adopts a highly integrated structure, combining the quick release valve, Pistons, friction plates, steel plates, etc. are integrated in one brake housing, with high system integration and strong adaptability, which improves the convenience of assembly and maintenance; the piston of the present invention adopts a double-channel sealing structure, through two identical Y-shaped sealing rings Realize gas and oil sealing on both sides of the piston, reliable sealing and low cost.

Description

technical field [0001] The invention belongs to the technical field of a mechanical automatic transmission (AMT) without a synchronizer for a commercial vehicle, and relates to an integrated low-delay intermediate shaft brake used for adjusting the rotational speed of a commercial vehicle transmission. Background technique [0002] At present, some mechanical automatic transmissions do not have synchronizers and use sliding gear sleeves to shift gears. When upshifting, the speed of the intermediate shaft needs to be reduced to a reasonable speed range in order to achieve smoother gear meshing and gear shifting. The intermediate shaft brake can realize the deceleration function, and the intermediate shaft brake has its own mechanical characteristics, and the braking control of the brake to the speed of the intermediate shaft of the transmission has a hysteresis in response. Therefore, when the brake is released, the brake has a time-delay property and will continue to maintai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D55/24F16D65/092F16D65/16F16D121/04F16D125/08
CPCF16D55/24F16D65/005F16D65/092F16D65/16F16D2121/04F16D2125/08
Inventor 张伟男谷鸣宇赵军吴玉亮李振国张晓丽时有付赫建勇肇润东孙国晖
Owner FAW JIEFANG AUTOMOTIVE CO
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