Composite shuttle-valve oil cylinder and the brake executing mechanism therewith for automatic control vehicle reducing system
A composite oil cylinder and deceleration system technology, applied in the direction of brakes, brake components, hydraulic brake transmission devices, etc., can solve the problems of difficult installation of external oil cylinders, service braking interference, interference with the driver's service braking, etc. The effect of large-scale promotion and use, reliable sealing and no wear, and excellent safety performance
Active Publication Date: 2010-09-08
ZHEJIANG GEELY HLDG GRP CO LTD
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Problems solved by technology
[0004] The technical scheme in the existing disclosed technology adopts the method that the motor or electromagnet drags the steel cable, and then pulls the automobile service brake pedal by the steel cable, so as to realize the connection between the automatic control system and the vehicle service brake system. Defects such as slow response, low reliability, and interference with the driver's service brake
The invention patent publication of Chinese Patent No. ZL00101579.6 relates to a three-way valve (essentially a pressure selection valve). However, the three-way valve connects the hydraulic pipeline of the automobile service braking system and the automatic control system, and the hydraulic working medium of the two systems is mixed, so the performance has a certain degree of restraint and influence on each other.
The Chinese invention patent application with the publication number CN1215005A discloses a braking mechanism parallel to the vehicle braking system. The mechanism directly pushes the brake pedal of the vehicle to generate braking force through an external hydraulic cylinder, and there are difficulties and interference in the installation of the external cylinder. Defects in the driver's service brake
The Chinese invention patent application with the publication number CN1473730A discloses a brake mechanism connected in series in the brake circuit of a motor vehicle. The regulating circuit has the defects of complex structure, high manufacturing precision requirements, high cost, large mechanism volume and difficult installation
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[0012] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1 is a structural view of the shuttle valve composite oil cylinder, which consists of five parts, including the diaphragm cylinder housing 1, the shuttle valve body 2, the rubber diaphragm 3, the steel ball 4 and the rubber diaphragm embedded iron 5, among which the right figure in Figure 1 is the initial or The state of the driver’s driving brake. The left picture in Figure 1 is the state of the self-controlled deceleration. The working principle and process are as follows:
[0013] As shown in the right figure of Figure 1, under the condition of vehicle braking, the steel ball 4 is under the joint action of gravity and vehicle braking fluid pressure, and is located at the lower port of the shuttle valve. The lower port is artificially designed with a small flow oil tank. As shown in Figure 2, the oil tank is conducive to the flow...
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One kind of composite shuttle valve oil cylinder consists of a shuttle valve and a rubber diaphragm oil cylinder. One kind of executing mechanism for automatically controlled vehicle reducing system consists of one composite shuttle valve oil cylinder, one hydraulic energy accumulating unit and one vehicle braking system. The composite shuttle valve oil cylinder serves as the connecting part between the automatically controlled vehicle reducing system and the vehicle braking system.
Description
[0001] Field [0002] The invention relates to a shuttle valve composite oil cylinder and a brake actuator of an automobile automatic control deceleration system composed of the same, and relates to the technical field of automatic control deceleration of automobile hydraulic service brake systems. Background technique [0003] With the development and progress of automobile technology, automatic control technology is more and more applied to automobiles. An important content of automobile automatic control technology is the automatic deceleration actuator of automobiles, such as the automatic deceleration mechanism in the anti-rear collision technology of automobiles. In the prior art, special service brake parts (such as special brake master cylinders) are used to realize this. The special parts are reserved with special interfaces for self-controlled deceleration, which are incompatible with common service brake systems. And for the automobile that adopts the common service...
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IPC IPC(8): B60T15/18B60T11/28
Inventor 傅建中
Owner ZHEJIANG GEELY HLDG GRP CO LTD