The invention belongs to the engineering machinery technology, and particularly relates to a multi-mode air brake system and a crane, the multi-mode air brake system comprises brake loops which are respectively connected through a plurality of air cylinders, each brake loop is connected with a plurality of brake units in parallel, and the brake units are connected with a brake master pump in series; the brake unit comprises a relay valve and a brake chamber, a control port of the relay valve is connected with an air outlet of the brake master cylinder, and an air inlet of the relay valve is connected with an air storage cylinder on each brake loop; an air inlet of the brake master cylinder is connected with an air storage cylinder on a brake loop; an air chamber number control unit is installed on the brake unit and/or a pressure adjusting unit is installed on the brake loop; the input end of the controller is connected with the pressure sensor, and the output end is connected with the electromagnetic valve and the electromagnetic proportional valve. The system has multiple braking modes and is suitable for different driving working conditions; the braking mode can be manually adjusted according to different driving states; or various braking modes are automatically switched according to information such as suspension pressure; and meanwhile, the mechanical emergency control function is achieved.
本发明属于工程机械技术,具体涉及一种多模式气压制动系统及起重机,包括通过多个储气筒分别连接的制动回路,每个制动回路上并联多个制动单元,并与制动总泵串联;制动单元包括继动阀和制动气室,继动阀的控制口与制动总泵的出气口连接,继动阀的进气口与每个制动回路上储气筒连接;制动总泵的进气口与制动回路上储气筒连接;在制动单元上安装气室数量控制单元和/或在制动回路上安装压力调节单元;控制器的输入端与压力传感器连接,输出端与电磁阀、电磁比例阀连接。本发明具有多种制动模式,适用于不同的行驶工况;且可根据不同的行驶状态手动调制动模式;或者根据悬挂压力等信息,自动切换多种制动模式;同时,具备机械式应急操纵功能。
Multi-mode air braking system and crane
一种多模式气压制动系统及起重机
2022-07-29
Patent
Electronic Resource
Chinese
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