| 摘要 |
The present invention provides a kind of pneumatic combined with hydraulic brake chamber, especially relating to a powerful hydraulic brake chamber which is highly stable, ready to provide high-pressure and high-speed actuation and easy to be assembled, dismantled and maintained powerful hydraulic. Said pneumatic type brake chamber is consisted of the following major parts: -a cylinder body, a cylinder cover, -a central shaft, a shaft sleeve, -a piston, a helical spring, -a connecting rod, a coupling device, and -an alarm device, ect. - in which, the pneumatic mechanism is constructed by said cylinder body, cylinder cover, shaft sleeve, piston and helical spring; the hydraulic mechanism is constructed by said central shaft, shaft sleeve, piston and helical spring; and the connecting mechanism is constructed by said connecting rod and the coupling device. In case of applying the foot brake, compressed air enters the pneumatic mechanism and actuates the piston, compresses the spring and produces a braking action through the actuation of the connecting mechanism first; then the high pressure hydraulic fluid enters the hydraulic mechanism and actuates the axle sleeve and the piston, compresses the spring and strengthens the braking action through the actuation of the connecting mechanism to increase the stability of the braking action of acquiring the firm, safe and powerful brake effect.
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