Power limit load controlling device of crawler crane

一种履带起重机功率极限载荷的控制装置

Abstract

The utility model discloses a power limit load controlling device of a crawler crane, which comprises a pedal accelerator arranged in a driver cab, a hydraulic pump arranged on an engine, and a controller and the engine which are arranged in an electric control cabinet, wherein the engine is connected with the hydraulic pump via a dividing box, and the pedal accelerator is connected with the input end of an engine ECM accelerator. The engine of the controlling device is an electronic fuel injection engine, the hydraulic pump is a proportional electrical control hydraulic pump, the controller is connected with the engine ECM via a CAN bus, and the PWM output port of the controller is connected with a proportional solenoid valve adjusting the swing angle of the hydraulic pump. PID adjustment is carried out by the controller so as to adjust the swing angle of the electrical control hydraulic pump and further adjust the input power of the hydraulic system to match the power of the engine to realize the non-flameout working of the engine. The controlling device can reduce fuel consumption, prolong the service life of the engine and protect the hydraulic system against the impact, and has the advantages of simple circuits, convenient realization and low cost.
本实用新型公开了一种履带起重机功率极限载荷的控制装置,包括安装在司机室内的脚踏板油门,安装在发动机上的液压泵,安装在电控柜内的控制器和发动机,发动机与液压泵通过分度箱连接,脚踏板油门与发动机ECM油门输入端连接。本实用新型的发动机为电喷发动机,液压泵为比例电控液压泵,控制器与发动机ECM通过CAN总线连接,控制器的PWM输出端口与调节液压泵摆角的比例电磁阀连接。本实用新型通过控制器进行PID调节来调整电控液压泵的摆角,进而调节液压系统的输入功率与发动机功率相匹配,实现发动机不熄火工作。本实用新型能够减少油耗,延长发动机的使用寿命,保护液压系统免受冲击。具有电路简单,实现方便,成本低廉的优点。

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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    CN-101857175-AOctober 13, 2010安徽英科智控股份有限公司Control system and control method of limit load of container reach stacker
    CN-101857175-BJanuary 04, 2012安徽英科智控股份有限公司Control system of limit load of container reach stacker