The invention provides a hydraulic brake system and a working machine. The hydraulic brake system comprises a brake, a hydraulic pump, a parking brake unit, a service brake unit and a braking switching control valve. The hydraulic pump is connected with the parking brake unit and the service brake unit so as to provide braking power hydraulic oil for the parking brake unit and the service brake unit. The parking brake unit and the service brake unit are connected with the brake through the brake switching control valve. The brake switching control valve can switch the brake mode of the brake. During service braking, the braking switching control valve controls the service brake unit to be communicated with the brake so as to drive the brake to perform service braking action; and during parking braking, the braking switching control valve controls the parking brake unit to be communicated with the brake so as to drive the brake to perform parking braking action. The same brake can be used as a service brake and a parking brake. Therefore, the hydraulic brake system is simple in structure, small in occupied space and relatively low in cost.
本发明提供了一种液压制动系统及作业机械。液压制动系统包括制动器、液压泵、驻车制动单元、行车制动单元及制动切换控制阀。液压泵分别与驻车制动单元和行车制动单元连接,以为驻车制动单元和行车制动单元提供制动动力液压油。驻车制动单元和行车制动单元均通过制动切换控制阀与制动器连接。制动切换控制阀能够切换制动器的制动方式。在行车制动时,制动切换控制阀控制行车制动单元与制动器连通,以驱使制动器进行行车制动动作;在驻车制动时,制动切换控制阀控制驻车制动单元与制动器连通,以驱使制动器进行驻车制动动作。同一制动器既能作为行车制动器,又能作为驻车制动器。由此,该液压制动系统的结构简单、空间占比较小且成本也相对较低。
Hydraulic brake system and working machine
液压制动系统及作业机械
2021-11-09
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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