Foot brake valve for vehicle

Abstract

The utility model discloses a vehicle foot brake valve which comprises a brake valve upper valve body, a front cover plate, an upper cover plate, a brake valve lower valve body, a first power supply port, a second power supply port, an input connecting piece, an output connecting piece, a first air inlet, a second air inlet, a first air outlet, a second air outlet and the like. The front cover plate, the upper cover plate and the brake valve lower valve body are in threaded connection with the brake valve upper valve body through the first bolt, the second bolt and the third bolt respectively, the stability of the whole structure is ensured, vibration and impact in the vehicle running process can be effectively coped, the input connecting piece transmits the action of the brake pedal into the valve, accurate brake control is achieved, and the design of double air inlets and double air outlets is achieved. A two-way redundant gas source supply and gas distribution system is constructed, and the reliability of gas source supply is improved. By means of the structure, the brake valve achieves the functions of stable structure supporting, accurate brake control and safe and reliable air source supply and distribution, the performance of a commercial vehicle brake system is improved, and the brake fault risk is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to brake valve technical field, especially a kind of vehicle foot brake valve. BACKGROUND

[0002] In commercial vehicle brake system, brake valve is the key component to ensure the safety of vehicle, however, traditional vehicle foot brake valve has many drawbacks,

[0003] In structural connection, welding or simple buckle mode is used in the past, although the brake valve of welding has certain strength, vibration impact when vehicle travels easily makes welding point fatigue cracking, causes air leakage or component loosening, maintenance cost is high, buckle connection stability is poor, is easily loosened and falls off under complex road condition, influence brake valve normal work, gas supply, single air inlet design risk is big, once air intake is blocked, brake system loses power immediately, accident is easily caused, brake control is not accurate enough, pure mechanical structure cannot accurately perceive pedal depth, it is difficult to adapt to different driving scenarios, and, early brake valve electronic part is weak, single power supply is unstable, signal output form is single, cannot satisfy the intelligent demand of vehicle, therefore, research and development new type high-performance foot brake valve become industry urgent need, which also promotes the birth of new generation brake valve. SUMMARY

[0004] The utility model is to at least solve one of the technical problems in the prior art, provide a kind of vehicle foot brake valve, accurate brake control, input connecting piece is mechanically associated with brake pedal, pedal depression depth determines brake force size, brake pedal is depressed about mm, and the on-off quantity in the first power supply port and the second power supply port is effective, and vehicle electronic control system can quickly capture pedal action signal, and timely adjust brake strategy, and, PWM signal output port can be adjusted signal duty ratio, accurately control brake air pressure, realize the delicate adjustment to brake force, meet the accurate demand of brake under different driving scenarios, improve driving safety and comfort, power redundancy and signal diversity, the first power supply port and the second power supply port are redundant, each is equipped with a group of power supply pin, guarantee the stable power supply of electronic element in brake valve, even if one of power supply port appears power supply anomaly, another can continue to power supply system, ensure that electronic control part works normally, simultaneously, two power supply ports are respectively provided with PWM signal output port and on-off quantity output port, on-off quantity output port outputs signal feedback pedal action state when pedal is depressed about mm, PWM signal output port can accurately control relevant components, and the interactive ability of brake valve and vehicle electronic system is improved, and the performance of entire brake system is optimized.

[0005] The utility model discloses still provide with above-mentioned one car foot brake valve, brake valve upper valve body, brake valve upper valve body's front end is installed with front cover, brake valve upper valve body's upper end is provided with upper cover, brake valve upper valve body's lower extreme is installed with brake valve lower valve body, the front end fixed connection of front cover has first power supply, the front end fixed connection of front cover has second power supply.

[0006] According to one car foot brake valve, the inner wall of the front cover is threadedly connected with a first bolt, and the bottom of the first bolt is threadedly connected with the brake valve upper valve body.

[0007] According to one car foot brake valve, the inside of the upper cover is threadedly connected with a second bolt, and the lower end of the second bolt is threadedly connected with the brake valve upper valve body.

[0008] According to one car foot brake valve, the inside of the upper cover is provided with an input connecting piece, and the lower end of the input connecting piece extends into the inside of the brake valve upper valve body.

[0009] According to one car foot brake valve, the inside of the brake valve lower valve body is threadedly connected with a third bolt, and the upper end of the third bolt is threadedly connected with the brake valve upper valve body.

[0010] According to one car foot brake valve, the lower end of the brake valve lower valve body is provided with an output connecting piece.

[0011] According to one car foot brake valve, the front end of the brake valve upper valve body is fixedly connected with a first air outlet, and the front end of the brake valve upper valve body is fixedly connected with a first air inlet.

[0012] According to one car foot brake valve, the front end of the brake valve lower valve body is fixedly connected with a second air outlet, and the front end of the brake valve lower valve body is fixedly connected with a second air inlet.

[0013] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model is further explained in connection with the drawings and examples;

[0015] Figure 1 It is the overall structural drawing of the utility model one car foot brake valve;

[0016] Figure 2 It is the side view of the utility model one car foot brake valve;

[0017] Figure 3 It is the front view of the utility model one car foot brake valve.

[0018] Figure 4 Figure 1 is a perspective view of the utility model of a vehicle foot brake valve.

[0019] Legend:

[0020] 1, brake valve upper valve body; 2, front cover plate; 3, first power supply port; 4, second power supply port; 5, first bolt; 6, upper cover plate; 7, second bolt; 8, first gas outlet; 9, first gas inlet; 10, second gas outlet; 11, second gas inlet; 12, output connecting piece; 13, brake valve lower valve body; 14, input connecting piece; 15, third bolt. DETAILED DESCRIPTION

[0021] This part will describe the specific embodiments of the utility model in detail, the preferred embodiments of the utility model are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] Reference Figures 1-4 , the utility model embodiment a vehicle foot brake valve, it includes brake valve upper valve body 1, brake valve upper valve body 1's front end is equipped with front cover plate 2, brake valve upper valve body 1's upper end is provided with upper cover plate 6, brake valve upper valve body 1's lower end is equipped with brake valve lower valve body 13, the front end of front cover plate 2 is fixedly connected with first power supply port 3, the front end of front cover plate 2 is fixedly connected with second power supply port 4, the inner wall of front cover plate 2 is threadedly connected with first bolt 5, the bottom of first bolt 5 is threadedly connected with brake valve upper valve body 1, threadedly connected can absorb the vibration in the vehicle driving to a certain extent, avoid the component loosening due to vibration, and when needing to maintain or replace front cover plate 2, it is convenient to disassemble and install, reduce maintenance cost, the inside of upper cover plate 6 is threadedly connected with second bolt 7, the lower end of second bolt 7 is threadedly connected with brake valve upper valve body 1, this connection mode guarantees the firmness of the connection of upper cover plate 6 and valve body, can effectively resist the vibration and impact in the vehicle driving process, maintains the stability of brake valve internal structure, guarantees the normal work of brake valve.

[0023] The inside of the upper cover plate 6 is provided with an input connecting piece 14, the lower end of the input connecting piece 14 extends into the inside of the upper valve body 1 of the brake valve, the input connecting piece 14 can transmit the action of the brake pedal to the inside of the brake valve to realize the control of the working state of the brake valve, and the connection design of the input connecting piece 14 with the upper cover plate 6 and the valve body ensures the accuracy and stability of signal transmission, the inside of the lower valve body 13 of the brake valve is threadedly connected with a third bolt 15, the upper end of the third bolt 15 is threadedly connected with the upper valve body 1 of the brake valve, which consolidates the connection strength between the upper and lower valve bodies of the brake valve and guarantees the structural integrity of the entire brake valve under different working conditions, the lower end of the lower valve body 13 of the brake valve is provided with an output connecting piece 12, the output connecting piece 12 is used for connecting the brake pipeline and transmitting the brake signal or energy generated by the brake valve to the brake actuating mechanism, the front end of the upper valve body 1 of the brake valve is fixedly connected with a first gas outlet 8, the front end of the upper valve body 1 of the brake valve is fixedly connected with a first gas inlet 9, the front end of the lower valve body 13 of the brake valve is fixedly connected with a second gas outlet 10, and the front end of the lower valve body 13 of the brake valve is fixedly connected with a second gas inlet 11, which participates in the gas circulation of the brake system and realizes the gas supply and gas distribution in the braking process, the second gas inlet 11 and the first gas inlet 9 form a double-redundancy gas source design, which improves the reliability of the gas supply. When the first gas inlet 9 fails, the second gas inlet 11 can continue to supply gas to the brake system. The second gas outlet 10 together with the first gas outlet 8 provides an output channel for the front axle and rear axle brake gas, further improving the gas output and distribution function of the brake valve.

[0024] Working principle: The first gas inlet 9 and the second gas inlet 11 and the first gas outlet 8 and the second gas outlet 10 bear the key task of supplying compressed air to the front axle and rear axle brake systems of the commercial vehicle, and these compressed air as the carrier of brake energy is the power source for realizing vehicle braking, the input connecting piece 14 is mechanically associated with the automobile brake pedal, when the brake pedal is stepped on, the input connecting piece 14 will move downward, the stepping depth of the brake pedal directly determines the size of the braking force, which presents a positive relationship between the depth and the braking force, when the brake pedal is stepped on about 1mm, this small displacement becomes the trigger point for changing the working state of the entire brake valve, at this time, the on-off quantity in the first power supply port 3 and the second power supply port 4 starts to take effect, which marks that the electronic control part of the brake valve starts to work, the first gas inlet 9 and the second gas inlet 11 play the role of gas source output in the braking process, specifically, the first gas inlet 9 is one of the gas source channels output to the second gas outlet 10, and the second gas inlet 11 also serves as a gas source channel output to the second gas outlet 10.

[0025] The design of the double air source supply to the same air outlet realizes the double path redundant signal function, which means that when one of the air source channels fails, the other channel can still guarantee the supply of brake air, greatly improving the reliability of the brake system. The first power supply port 3 and the second power supply port 4 play an important role in power supply and signal output in the entire brake valve operation, and are redundant to each other. Each power supply port is equipped with a group of power supply pins for providing stable power support for the electronic components inside the brake valve to ensure normal operation.

[0026] At the same time, they are also respectively provided with a PWM signal output port and a switching value output port. The switching value output port starts to be effective at the position of about 1mm of the brake pedal being stepped on, and outputs the corresponding switching value signal. This signal can be received by the electronic control system of the vehicle to judge the action state of the brake pedal. The PWM signal output port can output the pulse width modulation signal to accurately control some components in the brake system, for example, by adjusting the duty cycle of the signal to control the opening degree of the electromagnetic valve, thereby accurately adjusting the brake air pressure to realize more delicate brake effect control. In addition, the front end of the upper valve body 1 of the brake valve is provided with a front cover plate 2, the inner wall of which is connected with the upper valve body 1 of the brake valve through the first bolt 5. The upper end of the upper valve body 1 of the brake valve is provided with an upper cover plate 6 connected with the upper valve body 1 of the brake valve through the second bolt 7. The input connecting piece 14 is arranged in the inside of the upper cover plate 6. The front end of the upper valve body 1 of the brake valve is fixedly connected with the first air outlet 8. The front end of the lower valve body 13 of the brake valve is fixedly connected with the second air outlet 10 and the second air inlet 11. The lower end of the lower valve body 13 of the brake valve is provided with the output connecting piece 12. The inside of the lower valve body 13 of the brake valve is threadedly connected with the upper valve body 1 of the brake valve through the third bolt 15.

[0027] The above embodiment of the utility model is described in detail in combination with the drawings, but the utility model is not limited to the above embodiment. Within the knowledge range possessed by ordinary skilled persons in the technical field, various changes can be made without departing from the purpose of the utility model.

Claims

1. A vehicle foot brake valve, characterized in that, Include: The brake valve upper valve body (1), the front end of the brake valve upper valve body (1) is equipped with a front cover plate (2), the upper end of the brake valve upper valve body (1) is provided with an upper cover plate (6), the lower end of the brake valve upper valve body (1) is equipped with a brake valve lower valve body (13), the front end of the front cover plate (2) is fixedly connected with a first power supply port (3), the front end of the front cover plate (2) is fixedly connected with a second power supply port (4).

2. A foot brake valve for a vehicle according to claim 1, characterized in that The inner wall of the front cover plate (2) is threadedly connected with a first bolt (5), and the bottom of the first bolt (5) is threadedly connected with the brake valve upper valve body (1).

3. A foot brake valve for a vehicle according to claim 1, wherein The inside of the upper cover plate (6) is threadedly connected with a second bolt (7), and the lower end of the second bolt (7) is threadedly connected with the brake valve upper valve body (1).

4. A foot brake valve for a vehicle according to claim 1, wherein The inside of the upper cover plate (6) is provided with an input connecting piece (14), and the lower end of the input connecting piece (14) extends into the inside of the brake valve upper valve body (1).

5. A foot brake valve for a vehicle according to claim 1, wherein The inside of the brake valve lower valve body (13) is threadedly connected with a third bolt (15), and the upper end of the third bolt (15) is threadedly connected with the brake valve upper valve body (1).

6. A foot brake valve for a vehicle according to claim 1, wherein The lower end of the brake valve lower valve body (13) is provided with an output connecting piece (12).

7. A foot brake valve for a vehicle according to claim 1, wherein The front end of the brake valve upper valve body (1) is fixedly connected with a first gas outlet (8), and the front end of the brake valve upper valve body (1) is fixedly connected with a first gas inlet (9).

8. A foot brake valve for a vehicle according to claim 1, wherein The front end of the brake valve lower valve body (13) is fixedly connected with a second gas outlet (10), and the front end of the brake valve lower valve body (13) is fixedly connected with a second gas inlet (11).

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