Walking machine, and driving braking system and traveling braking method thereof: Fid-Bau Portal

Walking machine, and driving braking system and traveling braking method thereof

WANG JIANLI / LI GUOLIN / ZHU XING

The invention provides a traveling machine, and a traveling braking system and a traveling braking method thereof. The traveling braking system of the walking machine comprises: a driving pump set, wherein the driving pump set comprises a traveling variable pump and an oil supplementing pump; a travel motor forming a closed hydraulic circuit together with the traveling variable pump; a drive axleconnected with the driving motor; a brake valve connected with the oil supplementing pump; a brake device connected with the brake valve and used for braking the drive axle; a speed detection device used for detecting the running speed of the walking machine and a controller, wherein the controller reduces the displacement of the traveling variable pump to a zero value when receiving a parking instruction in the traveling process of the walking machine, after the displacement of the traveling variable pump is reduced to the zero value, the controller adjusts the displacement of the traveling variable pump according to a detection result of the speed detection device, and after the speed of the walking machine is within a preset range, the controller controls the brake valve to be started to brake the drive axle, so that the requirement of ramp parking is met.

本发明提出了一种行走机械及其行驶制动系统和行驶制动方法，其中，行走机械的行驶制动系统包括：驱动泵组，驱动泵组包括行驶变量泵和补油泵；行驶马达，与行驶变量泵形成闭式液压回路；驱动桥，与行驶马达相连接；制动阀，与补油泵相连接；制动装置，与制动阀相连接，制动装置用于对驱动桥进行制动；速度检测装置，用于检测行走机械的行驶速度；控制器，在行走机械行驶过程中，接收到停车指令时，控制器将行驶变量泵的排量降低至零值，并在行驶变量泵的排量降低至零值后，控制器根据速度检测装置的检测结果，调节行驶变量泵的排量，在行走机械的速度在预设范围内后，控制制动阀启动以对驱动桥进行制动，满足了坡道停车的需求。

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