A bulldozer brake control system and control method

Abstract

The invention discloses a bulldozer brake control system and method. The control system comprises a brake sensor and a whole machine controller, wherein when stepped down, a brake pedal is converted to be in an intermediate state from an initial state and then converted to be in a brake state, when the brake pedal is converted to be in the intermediate state from the initial state, the brake sensor forms a first sensing signal, and when the brake pedal is converted to be in the intermediate state from the brake state, the brake sensor forms a second sensing signal. The whole machine controller is connected with the brake sensor in a mode that a whole machine can be in communication with the brake sensor. The bulldozer brake control system can be prevented from impacting on drive parts in the braking process and can solve the problem that the manipulation comfort is poor when the brake pedal is converted to be in a starting state from the brake state.

Description

technical field [0001] The invention relates to the technical field of engineering vehicles, in particular to a bulldozer braking control system and a control method. Background technique [0002] Bulldozers are engineering machinery for earthwork operations, which can independently complete various complex earthwork work, and are currently widely used in various fields such as water conservancy, transportation, construction, and mining. The operation process of the bulldozer is a cycle operation, and the general transportation distance is only 40 to 100 meters. The walking system of each cycle operation needs to complete actions such as forward, braking, backward, and braking. Under normal circumstances, even if the engine is in the state of small throttle and low speed, the output torque is still very large. [0003] In the prior art, the braking system of the bulldozer adopts a friction plate clutch brake or a wet brake band brake. The friction between the dual plate or...

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned braking process, although the transmission parts of the bulldozer are in the braking state due to the friction force of the brake clutch friction plate or the brake band, the output torque of the engine is not reduced, so under braking conditions , all transmission components before the brake of the bulldozer are still transmitting torque to the next level components, and are under stress

In this way, affected by the sudden braking of the braking system and the inertial force of the vehicle, it will cause a certain braking impact on the transmission parts of the bulldozer and reduce the service life of the transmission parts. Under any operating conditions, when the brake pedal is released, the brake clutch will disengage, and the transmission system will start suddenly driven by the output torque of the engine, which reduces the comfort of operation

[0005] Therefore, how to avoid the impact of the bulldozer on the transmission parts during braking and the poor handling comfort when the brake clutch is disengaged have become important technical issues to be solved by those skilled in the art.

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