The invention relates to the technical field of hydraulic braking, and discloses an auxiliary braking device, a hydraulic braking system and a vehicle. The auxiliary braking device comprises a braking main cylinder, the braking main cylinder comprises a main cylinder body and a piston, a cylinder cavity is formed in the main cylinder body, the piston can be arranged in the cylinder cavity in a sealed and sliding mode and divides the cylinder cavity into a main cylinder front cavity and a main cylinder rear cavity, and the main cylinder rear cavity is provided with an oil inlet and an oil outlet used for being connected with a braking oil way. The main cylinder front chamber is provided with a liquid supplementing port and a pressurizing oil port; the outlet end of the hydraulic accumulator is connected with a main cylinder pressurization control valve capable of being opened and closed and a first brake auxiliary control valve capable of being opened and closed in parallel, the main cylinder pressurization control valve is connected with the pressurization oil port, and the first brake auxiliary control valve is used for being connected with a brake oil way. The auxiliary braking device can provide braking force for the hydraulic braking system when the vehicle is normally braked, and provides power-assisted braking during braking when the motor fails or the hydraulic braking system enters the standby mode, so that the braking reliability is improved.
本发明涉及液压制动技术领域,公开一种辅助制动装置、液压制动系统和车辆。辅助制动装置包括制动主缸,制动主缸包括主缸体和活塞,主缸体内形成有缸腔,活塞能够密封滑动地设置在缸腔内并将缸腔分隔为主缸前腔室和主缸后腔室,主缸后腔室具有进油口和用于与制动油路连接的出油口,主缸前腔室具有补液口和增压油口;液压蓄能器的出口端并联有能够打开和关闭的主缸增压控制阀与能够打开和关闭的第一制动辅助控制阀,主缸增压控制阀与增压油口连接,第一制动辅助控制阀用于和制动油路连接。辅助制动装置能够在车辆正常制动时给液压制动系统提供制动力,并且在电机失效或液压制动系统进入备用模式时,在制动时提供助力制动,提升制动可靠性。
Auxiliary braking device, hydraulic braking system and vehicle
辅助制动装置、液压制动系统和车辆
2021-09-28
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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