公开(公告)号：US3901357A

公开(公告)日：1975-08-26

申请号：US48438474

申请日：1974-07-01

Applicant: BENDIX CORP

Inventor： REITZ RICHARD J ,  NICOLSON JOHN M ,  HEROLD GUENTER K

IPC: F16D65/14 ,  F16D65/60 ,  F16D65/56

CPC classification number: F16D65/60 ,  F16D2125/30

Abstract: An automatic slack adjuster for a cam-operated brake is disclosed. The adjustment mechanism includes a pair of torquelimiting clutch springs. One spring limits adjustment to a predetermined torque level so that large actuating forces generated during a brake application will not overload the adjustment mechanism. The other clutch spring insures that the adjuster will not ''''back off'''' after an adjustment is effected. The adjuster is designed so that manual adjustment may also be effected, either to adjust the brakes or to back the brakes off without disconnecting any part of the automatic adjuster mechanism.

公开(公告)号：US4191429A

公开(公告)日：1980-03-04

申请号：US86894378

申请日：1978-01-12

Applicant: BENDIX CORP

Inventor： KRUKE EDWARD J ,  REITZ RICHARD J

IPC: B60T13/26 ,  B60T17/18 ,  B60T15/56

CPC classification number: B60T13/268 ,  B60T13/263 ,  B60T17/18

Abstract: A fluid pressure braking system for the trailer portion of an articulated vehicle includes an emergency valve which controls communication between the trailer supply line, the trailer service line, the reservoirs carried on the trailer, the spring brake actuators, and the service brake actuators. During normal operating conditions, the valve communicates fluid pressure from the trailer supply line to the reservoirs and to the spring brake actuators to provide hold-off pressure maintaining the spring brake actuators in a released condition, and permits actuation of the service brake by the air pressure communicated through the trailer service line in the normal manner. However, during emergency conditions, or when the vehicle is parked, the fluid pressure level in the supply line is dropped to a relatively low level. When this occurs, the trailer emergency valve prevents communication between the reservoir and the spring brakes and communicates the hold-off pressure in the spring brakes to effect a service brake actuation using this hold-off pressure. Consequently, an emergency or parking actuation is initially effected by actuation of the service brake. This hold-off pressure is allowed to bleed through a relatively low level at a predetermined rate, thereby permitting the spring brake actuators to gradually apply so that the spring brake actuators are used only for parking.

Abstract translation: 用于铰接式车辆的拖车部分的流体压力制动系统包括控制拖车供应管线，拖车服务管线，拖车上承载的贮存器，弹簧制动器致动器和行车制动器致动器之间的连通的紧急阀。 在正常操作条件下，阀将来自拖车供应管线的流体压力传递到储存器和弹簧制动器致动器，以提供保持弹簧制动器致动器处于释放状态的保持压力，并且允许由空气致动工作制动器 通过拖车服务线以正常方式传达的压力。 然而，在紧急情况下，或车辆停放时，供给线路中的液压水平下降到相对低的水平。 当这种情况发生时，拖车紧急阀防止储存器和弹簧制动器之间的连通并且传递弹簧制动器中的推压力，以使用该推压力来实现行车制动器致动。 因此，最初通过致动制动器来实现紧急或停车致动。 允许该按压压力以预定的速率渗出相对低的水平，从而允许弹簧制动致动器逐渐施加，使得弹簧制动器致动器仅用于停车。