Integral low-latency intermediate shaft brake

A technology of brakes and intermediate shafts, applied in the direction of axial brakes, brake types, brake components, etc., can solve the problems of transmission assembly assembly, inconvenient maintenance, long response time for releasing brakes, and difficulty in precise control, etc., to achieve Improve the convenience of assembly and maintenance, improve the response speed of the system, and have strong adaptability

CN111043185AActive Publication Date: 2020-04-21FAW JIEFANG AUTOMOTIVE CO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-04-21

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Abstract

The invention relates to an integral low-latency intermediate shaft brake. The integral low-latency intermediate shaft brake is mounted at the front end of a transmission intermediate shaft and comprises a brake shell connected with a transmission shell. Three gas paths are formed on the brake shell, and one end of the first gas path is plugged. A quick release valve, a piston, five friction plates, five steel sheets and an ejector pin pressed into the piston are arranged in the brake shell. The simple-structure quick release valve device is integrated in the control gas path, when braking isrelieved, a brake gas cylinder exhausts gas, a solenoid valve is controlled not through the brake, the quick release valve directly exhausts gas, the retardation time for relieving brake is shortened,and the system response speed is increased; the integrated structure is adopted, the quick release valve, the piston, the friction plates, the steel sheets and the like are integrated in the brake shell, the system integration level is high, adaptability is strong, and convenience of assembling and maintenance is improved; and the dual sealing structure is adopted by the piston, gas and oil sealing of the two sides of the piston is achieved through two identical Y-shaped sealing rings, sealing is achieved reliably, and cost is low.
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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...

Examples

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...