Front-axle parking foot brake valve, brake system and detection method of parking brake functions
A foot brake valve, hand brake valve technology, applied in the direction of the brake safety system, brakes, brake components, etc., can solve the problems of increasing cost, increasing the parking braking force of the whole vehicle, non-existence, etc., to achieve increased parking The effect of improving vehicle braking force, improving safety, and saving production costs
Active Publication Date: 2015-12-16
ZF COMMERCIAL VEHICLE SYSTEMS (QINGDAO) CO LTD
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Problems solved by technology
The front axle parking brake valve can increase the parking braking force of the whole vehicle without changing the steering system of the front axle, but it needs to add a valve body and additional pipeline layout to the whole vehicle braking system, which greatly increases the cost
[0004] In addition, there is currently no method for detecting whether the cooperation of the hand brake valve and the energy storage spring brake chamber can stop the car stably on the slope
Method used
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[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited to these embodiments.
[0033] Such as Figure 1 to Figure 4 As shown, a front axle parking foot brake valve includes a first air outlet 4, a second air outlet 5, and a first air inlet 2 and a second air inlet 3 for connecting with the air source of the automobile, The first air outlet 4 communicates with the rear axle brake air chamber of the automobile through a pipeline, and the second air outlet 5 communicates with the front axle brake air chamber 30 of the automobile through the front axle brake circuit. It also includes the first chamber 22, the second chamber 12, the third chamber 16, the fourth chamber 18 arranged in sequence from top to bottom, and a control port for communicating with the air outlet of the hand brake valve of the automobile 6. The second air outlet 5 and the control po...
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The invention discloses a front-axle parking foot brake valve, a brake system and a detection method of parking brake functions. The front-axle parking foot brake valve comprises a first chamber, a second chamber, a third chamber, a fourth chamber and a control opening which are sequentially arranged from top to bottom, wherein the control opening is used for communicating with an air outlet end of a hand brake valve of a vehicle, and communicates with the fourth chamber. The brake system comprises the hand brake valve, an air supply, a front-axle brake air chamber, a rear-axle brake air chamber and the foot brake valve. The method for detecting the parking brake functions, comprises the following steps of: arranging the brake system on the vehicle to be detected; enabling the vehicle to be detected to run to a target ramp, and pulling the hand brake valve to a parking position when the vehicle runs to a specified position; continuing to pull the hand brake valve to a detecting position, checking whether the vehicle to be detected can be parked at the specified position or not by completely depending on the mechanical braking force of a rear-axle spring brake air chamber. According to the front-axle parking foot brake valve, the brake system and the detection method, disclosed by the invention, the overall parking brake force of the vehicle is increased, so that the front-axle parking foot brake valve, the brake system and the detection method are particularly suitable for oversize vehicles.
Description
technical field [0001] The invention belongs to the technical field of automobile braking, and in particular relates to a front axle parking foot brake valve, a braking system and a detection method for the parking brake function. Background technique [0002] The parking brake of existing large automobiles is usually realized by the energy storage spring brake chamber and the hand brake valve (i.e. the so-called air break brake). Due to the complex structure and volume of the energy storage spring brake chamber Larger, so this type of structure can only be applied to the rear axle of large cars. In order to control the steering of the car, the air chamber used by the front axle of the car is obviously smaller than the air chamber of the middle and rear axle, and the energy storage spring cannot be installed for parking braking. That is to say, the front axle of many large cars can only Carry out service brake, can't utilize the air chamber that energy storage spring can be...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B60T15/04B60T17/22B60T8/36
CPCB60T8/3605B60T15/04B60T17/22
Inventor 邱国光
Owner ZF COMMERCIAL VEHICLE SYSTEMS (QINGDAO) CO LTD