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Electric control mechanical brake hydraulic system and engineering machinery thereof

A technology of mechanical braking and hydraulic system, applied in the direction of brakes, brake components, brake transmission devices, etc., can solve the problems of brake system delay, large braking force, difficult adjustment of braking performance, etc., to improve responsiveness , the effect of shortening the brake line

Pending Publication Date: 2020-10-02
XCMG CONSTR MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an electronically controlled mechanical brake hydraulic system to solve the problems of large braking force, time delay of the braking system, and difficulty in adjusting the braking performance of the conventional full hydraulic wet brake system.

Method used

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  • Electric control mechanical brake hydraulic system and engineering machinery thereof

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0023] Such as figure 1 As shown, the electronically controlled mechanical brake hydraulic system in this embodiment mainly includes a brake pump 1, a filling valve 2, a brake valve 6, an electric proportional control valve 9, 10, a shuttle valve 11, 12, a mechanical pedal 17, Connecting rod 19, pedal sensor 20 and controller 18.

[0024] The brake pump 1 is used to pump oil from the hydraulic oil tank 16 to the filling valve 2 to supply oil to the brake 13 and the brake 14 . The outlet of the brake pump 1 communicates with the safety valve 3 , and the outlet of the safety valve 3 communicates with the hydraulic oil tank 16 .

[0025] The filling valve 2 has an oil inlet, an oil outlet and a ...

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Abstract

The invention relates to an electric control mechanical brake hydraulic system and engineering machinery thereof. A brake pump pumps hydraulic oil for a brake valve and an electric proportional control valve; an oil inlet of the brake valve is communicated with an oil inlet of the electric proportional control valve; oil outlets of the brake valve and the electric proportional control valve are respectively communicated with one oil inlet of a shuttle valve; an oil outlet of the shuttle valve is communicated with a brake; a valve element of the brake valve is connected with a mechanical pedalthrough a connecting rod; a pedal sensor outputs a detected valve pedal angle change electric signal of the brake valve to a controller; the controller controls the electric proportional control valveto output hydraulic oil to the brake. Under normal conditions, the pedal sensor transmits a signal to the controller to control the electric proportional control valve to brake the whole vehicle, sothat the brake pedal force is greatly reduced, the responsiveness of a brake system is improved, and the control comfort of a driver is improved; in emergency, the mechanical pedal acts on the brake valve through the connecting rod to output brake pressure to brake the whole vehicle, and safety and reliability of the brake system of the whole vehicle are guaranteed.

Description

technical field [0001] The invention relates to the field of construction machinery, in particular to an electronically controlled mechanical braking hydraulic system and construction machinery. Background technique [0002] In the prior art, most of the braking systems of construction vehicles such as loaders are air-top oil brake and full hydraulic brake. However, the pedal force of the brake valve is affected by the output pressure of the brake valve. The brake pedal force is relatively large, the position of the brake components is relatively fixed, the pipeline layout of the brake system is long, and the delay response of the brake system is slow. Poor maintainability. Contents of the invention [0003] The purpose of the present invention is to provide an electronically controlled mechanical braking hydraulic system to solve the problems of large braking force, time delay of the braking system, and difficult adjustment of braking performance of the conventional full...

Claims

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Application Information

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IPC IPC(8): B60T13/68B60T13/66B60T15/04B60T15/02
CPCB60T13/68B60T13/686B60T13/66B60T15/04B60T15/028
Inventor 张安民沈勇谢朝阳孙志远乔战战刘宁范小童王苏东杨娟曾海霞
Owner XCMG CONSTR MACHINERY