Spring brake chamber capable of preventing braking force superposition

A spring brake air chamber, braking force technology, applied in the direction of brake transmission, brake, brake actuator, etc., can solve the problem of increased maintenance cost, complicated pipeline connection, differential relay valve or two-way single There are many problems such as many ports to the valve, so as to reduce the configuration cost, save the installation space, and reduce the failure mode.
CN102410320BActive Publication Date: 2013-05-08RUILI GROUP RUIAN AUTO PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
RUILI GROUP RUIAN AUTO PARTS CO LTD
Publication Date
2013-05-08

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Abstract

The invention provides a spring brake chamber capable of preventing braking force superposition. In the invention, a bypass valve is arranged in the spring brake chamber, and the bypass valve comprises a valve seat and a one-way valve and optionally comprises a return spring; the spring brake chamber is of an external respiration structure or an internal respiration structure; and the bypass valve can be arranged on a middle shell at a piston shaft of the spring brake chamber, a middle shell of a parking brake port, an energy storage piston or in a parking brake port. By adopting the spring brake chamber capable of preventing braking-force superposition, the conventional differential relay valve or dual-way check valve is omitted, and the function of preventing braking force superpositionis realized; and meanwhile a brake pipeline can be more simple and convenient in connection, a brake system can be more economically configured, and failure modes are reduced.
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Description

technical field

[0001] The invention relates to a vehicle air brake system, in particular to an anti-braking force superimposed spring brake air chamber. Background technique

[0002] In the prior art, in order to prevent the simultaneous action of the driving brake and the parking brake, the brake pipeline system mainly has two structures, one is the brake pipeline with a differential relay valve attached to the spring brake air chamber , and the second is the brake pipeline with a double-way check valve outside the spring brake air chamber; the brake pipelines of these two structures are installed with a differential relay valve outside the spring brake air chamber in the pipeline. Or a two-way one-way valve to achieve the purpose of preventing the superposition of braking force. The disadvantage of such a pipeline is that due to the addition of valves in the brake pipeline, the pipeline connection becomes complicated and the failure mode of the brake system is increased....

Claims

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