Hydraulic brake system and method capable of simultaneously realizing wire-controlled and manual driving

A technology of manual driving and hydraulic braking, which is applied in the field of unmanned vehicle braking system, can solve the problems of cost increase and system complexity, and achieve the effect of saving cost, simplifying the whole vehicle system and ensuring parking safety

Active Publication Date: 2020-12-18
FUJIAN LONGMA ENVIRONMENTAL SANITATION EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are currently two deficiencies in the existing schemes. 1. The system is relatively complex, and two sets of braking systems need to be implemented on the same vehicle for manual driving and drive-by-wire driving at the same time; 2. The relative cost has increased significantly

Method used

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  • Hydraulic brake system and method capable of simultaneously realizing wire-controlled and manual driving

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Embodiment Construction

[0019] Such as figure 1 As shown, the present invention simultaneously realizes the hydraulic braking system of wire control and manual driving, which includes a hydraulic oil tank 1, a hydraulic pump 2, a brake cylinder 7, a pedal valve 6, a first pressure sensor 3, a second pressure sensor 13, a shuttle Valve 9, first electromagnetic reversing valve 5, second electromagnetic reversing valve 8, third electromagnetic reversing valve 11, electric proportional pressure control valve 10 and accumulator 12;

[0020] The oil suction port of the hydraulic pump 2 is connected with the hydraulic oil tank 1, and the oil outlet port of the hydraulic pump 2 is respectively connected with the inlet of the pedal valve 6, the first pressure sensor 3, the inlet of the first electromagnetic reversing valve 5, the accumulator 12 and the The inlet of the third electromagnetic reversing valve 11 is connected, the outlet of the pedal valve 6 is connected with an inlet of the shuttle valve 9, the ...

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Abstract

The invention discloses a hydraulic brake system and method capable of simultaneously realizing wire-controlled and manual driving. The hydraulic brake system comprises a hydraulic oil tank, a hydraulic pump, a brake cylinder, a pedal valve, a first pressure sensor, a second pressure sensor, a shuttle valve, a first electromagnetic reversing valve, a second electromagnetic reversing valve, a thirdelectromagnetic reversing valve, an electric proportional pressure control valve and an energy accumulator. Oil pressure at the brake cylinder is adjusted by controlling the magnitude of current. Anelectro-hydraulic-control brake mode is adopted, so that the brake effect is quicker and more accurate; the energy accumulator can be used for braking when the hydraulic pump does not work, and oil cannot be formed in time, so that parking safety is guaranteed; and other special functions can be added on the basis of the brake system, such that cost is reduced and the whole vehicle system is simplified.

Description

technical field [0001] The invention belongs to the field of braking systems for unmanned vehicles, and in particular relates to a hydraulic braking system and a braking method that can simultaneously realize wire control and manual driving. Background technique [0002] At present, the braking system of unmanned vehicles is realized by electric push rods: the motor driver drives the electric push rods to drive the pedal mechanism to move, and at this time, the state of human foot braking can be simulated. The pedal pushes the master cylinder piston to generate hydraulic pressure, and the brake oil enters the wheel cylinder to generate wheel cylinder pressure, thereby generating braking force. Due to the time delay of the electronic signal, this solution cannot accurately achieve the predetermined braking effect. [0003] There are also schemes that utilize electronic calipers to realize brake-by-wire or the like. There are generally two deficiencies in the existing soluti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/74B60T13/68
CPCB60T13/745B60T13/686
Inventor 饶紫荆李伟文谢永芳饶航
Owner FUJIAN LONGMA ENVIRONMENTAL SANITATION EQUIP
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