阅读说明：本技术 一种气压制动型重型底盘上坡辅助系统 (Air-pressure braking type heavy chassis uphill auxiliary system ) 是由 朱德安 姚伟 于 2020-07-15 设计创作，主要内容包括：本发明公开了一种气压制动型重型底盘上坡辅助系统,包括主控制器、上坡辅助开关、转矩传感器、陀螺仪及放气阀,所述上坡辅助开关、转矩传感器、陀螺仪及放气阀均与主控制器电性连接,所述放气阀与车辆制动系统连接,所述转矩传感器与车辆发动机连接,用于采集发动机转速、转矩,所述陀螺仪用于检测车辆倾斜角度。该上坡辅助系统结构简单,操作方便,制动牢靠,能实现车辆半坡平稳起步,同时,实施成本低,易于推广。(The invention discloses an air brake type heavy chassis uphill auxiliary system which comprises a main controller, an uphill auxiliary switch, a torque sensor, a gyroscope and a deflation valve, wherein the uphill auxiliary switch, the torque sensor, the gyroscope and the deflation valve are all electrically connected with the main controller, the deflation valve is connected with a vehicle brake system, the torque sensor is connected with a vehicle engine and used for acquiring the rotating speed and the torque of the engine, and the gyroscope is used for detecting the inclination angle of a vehicle. The uphill auxiliary system is simple in structure, convenient to operate, firm in braking, capable of achieving stable starting of the vehicle on a half slope, low in implementation cost and easy to popularize.)

1. The utility model provides a heavy chassis of air brake type auxiliary system that goes up a slope which characterized in that: including main control unit, uphill auxiliary switch, torque sensor, gyroscope and bleed valve all with main control unit electric connection, the bleed valve is connected with vehicle braking system, torque sensor is connected with vehicle engine for gather engine speed, torque, the gyroscope is used for detecting vehicle inclination.

2. The uphill assist system of claim 1, wherein: the vehicle braking system comprises a main braking valve, a relay valve, a differential relay valve and a brake, wherein the air release valve is connected in parallel to an air inlet of the main braking valve and an air outlet of the relay valve and is connected with the brake.

3. The uphill assist system of claim 2, wherein: the air release valve is also connected with the differential relay valve.

4. The uphill assist system of claim 1, wherein: the uphill auxiliary switch is arranged in the vehicle cab.

Technical Field

The invention relates to the technical field of vehicle control systems, in particular to an air brake type heavy chassis uphill auxiliary system.

Background

At present, passenger cars have been generally popularized as an uphill assist system. However, the chassis of the heavy-duty car is not provided with a traveling computer, and the traditional mechanical control double-loop air pressure braking system is still adopted without an uphill auxiliary function.

When the vehicle has no uphill auxiliary function, the vehicle slides backwards when the driver releases the clutch pedal and switches from the brake pedal to the accelerator pedal during starting on a slope surface, so that starting difficulty is caused. Particularly, for a heavy-load chassis, the cooperation operation of clutch, brake and accelerator is required to be performed quickly and accurately by depending on the experience of a driver, so that the slope can be started stably.

Disclosure of Invention

Aiming at the technical problems, the invention provides an air-pressure braking type heavy chassis uphill auxiliary system which is simple in structure, convenient to operate, firm in braking and capable of achieving stable starting of a vehicle on a half slope.

The utility model provides a heavy chassis uphill auxiliary system of air brake type, includes main control unit, uphill auxiliary switch, torque sensor, gyroscope and bleed valve all with main control unit electric connection, the bleed valve is connected with vehicle braking system, torque sensor is connected with vehicle engine for gather engine speed, torque, the gyroscope is used for detecting vehicle inclination.

Preferably, the vehicle brake system includes a master cylinder valve, a relay valve, a differential relay valve and a brake, and the deflation valve is connected in parallel to an air inlet of the master cylinder valve and an air outlet of the relay valve and connected to the brake.

Preferably, in the above aspect, the purge valve is further connected to a differential relay valve.

Preferably, in the above aspect, the uphill assist switch is provided in a vehicle cabin.

The invention has the beneficial effects that:

1. simple structure, convenient operation, it is firm to brake, can realize the steady start of vehicle half a slope.

2. Need not to carry out big improvement to the vehicle and can assemble the integration with this system and vehicle existing equipment, implementation cost is low, easily promotes.

3. The air release valve is connected between the air inlet of the brake main valve and the air outlet of the relay valve in parallel and is also connected with the differential relay valve, so that the damage to the brake air chamber caused by repeated actions of a hand brake is avoided.

Drawings

Fig. 1 is a schematic view of the structural principle of the present invention.

The reference numbers are as follows: 1-main controller, 2-uphill auxiliary switch, 3-torque sensor, 4-gyroscope, 5-air release valve, 6-brake main valve, 7-relay valve, 8-differential relay valve and 9-brake.

Detailed Description

The present embodiment is described in detail below with reference to the accompanying drawings.

As shown in fig. 1, the air braking type heavy chassis uphill auxiliary system comprises a main controller 1, an uphill auxiliary switch 2, a torque sensor 3, a gyroscope 4 and a deflation valve 5, wherein the uphill auxiliary switch 2, the torque sensor 3, the gyroscope 4 and the deflation valve 5 are all electrically connected with the main controller 1, the deflation valve 5 is connected with a vehicle braking system, the torque sensor 3 is connected with a vehicle engine and used for acquiring the rotating speed and the torque of the engine, and the gyroscope 4 is used for detecting the inclination angle of the vehicle.

In the embodiment, the vehicle brake system comprises a main brake valve 6, a relay valve 7, a differential relay valve 8 and a brake 9, and the deflation valve 5 is connected in parallel to an air inlet of the main brake valve 6 and an air outlet of the relay valve 7 and is connected with the brake 9. The vehicle brake system is the prior art, and for convenience of describing the connection relationship between the uphill auxiliary system and the vehicle brake system, devices related to the connection of the uphill auxiliary system, such as a master brake valve 6, a relay valve 7, a differential relay valve 8 and a brake 9, are listed. The connection relationship and the working principle of each device in the original vehicle braking system are the prior art, and therefore, the detailed description is not provided herein.

In this embodiment, the purge valve 5 is also connected to a differential relay valve 8.

In the present embodiment, the uphill assist switch 2 is provided in the vehicle cabin.

The working principle of the embodiment is described in detail by taking a heavy-load chassis double-circuit brake system provided with a spring brake air chamber as an example.

When the vehicle is braked by the foot brake on a half slope, the uphill auxiliary switch 2 is opened, the uphill auxiliary function is started, the air source directly enters the spring brake air chamber through the air release valve 5 to act on the brake 9, the vehicle is immediately braked (equivalent to a foot brake stepping state), and then the foot brake can be released. When stepping on the accelerator to start uphill, the main controller 1 controls the opening of an exhaust port of the deflation valve 5 according to the engine speed information acquired by the torque sensor 3 and the vehicle gradient information acquired by the gyroscope 4, so that the pressure of the spring brake air chamber is gradually reduced, the brake limit of the brake 9 is gradually released, and after the uphill auxiliary system is used, a driver can realize stable starting on a half slope only by operating the clutch and the accelerator according to a flat ground starting step. The air release valve 5 is also connected with the differential relay valve 8, and the function of the air release valve is the same as that of the connection of the main brake valve 6 and the differential relay valve 8, so that the damage to a brake air chamber caused by the simultaneous action of a hand brake when an uphill auxiliary system is used is avoided.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.