Power cut-off electric control system for unilateral driving brake of engineering vehicle

Abstract

The invention relates to a power cut-off electric control system for unilateral driving brake of an engineering vehicle. The power cut-off electric control system comprises a brake bridge, a left oil path, a right path and a brake balancing valve, wherein the left oil path is used for controlling brake of a left wheel of the brake bridge; the right oil path is used for controlling brake of a right wheel of the brake bridge; the brake balancing valve is connected with the left oil path and the right oil path; the left oil path and the right oil path are provided with a first pressure switch respectively; one of the left oil path and the right oil path is provided with a second pressure switch; the action pressure of each first pressure switch is lower than that of the second pressure switch; signals of the first pressure switches control a brake light; and the second pressure switch controls power output of a speed changing box. The power cut-off electric control system has the beneficial effects that: 1, the pressure switches with the set pressure values are arranged in the oil paths of the brake system and adjustment is not required after the pressure switches are arranged, so assembling efficiency and control precision are improved; and 2, the pressure switches with two pressure values control the power cut-off system and the brake light respectively, so the working condition that the brake light is turned on without cutting off the power system is realized.

Description

technical field [0001] The invention relates to an electronic control system for driving braking of engineering vehicles, in particular to an electronic control system for cutting off driving braking power of engineering vehicles with unilateral braking. Background technique [0002] The service braking of engineering vehicles is to control the brake booster device to apply braking force to the braking system through the brake pedal to realize the braking of the vehicle. Engineering vehicles need to cut off the power of the gearbox when braking, otherwise the wear of the brake pads will be aggravated, and at the same time, the brake lights need to be turned on to warn the rear vehicles and surrounding personnel. The traditional method is to use a mechanical switch to detect the brake signal. This method needs to adjust the brake switch. Otherwise, the power will be cut off when the brake is lightly pressed, or the power cannot be cut off even if the brake is pressed to the e...

AI Technical Summary

Problems solved by technology

It is not necessary to cut off the power when the vehicle is turning when braking on one side, but the brake lights need to be turned on to remind relevant personnel

At present, the traditional method of detecting brake signals with mechanical switches cannot be applied to unilateral brake systems, and after the detection system is installed, experienced technicians are required to debug, which affects the assembly efficiency of the whole machine, and the detection of brake signals is difficult. The accuracy is not high

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