The invention discloses an electric drive mining dump truck folding ladder control device which comprises a hydraulic oil tank, a hydraulic pump, a control valve, a balance valve and a swing oil cylinder, the hydraulic oil tank is connected with an input port of the hydraulic pump through a hydraulic pipeline, and an output port of the hydraulic pump is connected with a main oil inlet of the control valve through the hydraulic pipeline. A main oil return port of the control valve is connected with the hydraulic oil tank through a hydraulic pipeline; a first working oil port of the control valve is connected with a first oil inlet of the balance valve through a hydraulic pipeline, and a first oil outlet of the balance valve is connected with a lifting oil port of the swing oil cylinder through a hydraulic pipeline. A second working oil port of the control valve is connected with a second oil inlet of the balance valve through a hydraulic pipeline, and a second oil outlet of the balance valve is connected with a descending oil port of the swing oil cylinder through a hydraulic pipeline. The invention further discloses a control method for the folding ladder of the electric drive mining dump truck. The folding ladder of the mining dump truck can be stably folded and lifted, and the constraint of the ground clearance of the folding ladder is eliminated.
本发明公开了一种电传动矿用自卸车折叠梯控制装置,包括:液压油箱、液压泵、控制阀、平衡阀、摆动油缸,液压油箱通过液压管路连接液压泵的输入口,液压泵的输出口通过液压管路连接控制阀的主进油口,控制阀的主回油口通过液压管路连接液压油箱;控制阀的第一工作油口通过液压管路连接平衡阀的第一进油口,平衡阀的第一出油口通过液压管路连接摆动油缸的举升油口;控制阀的第二工作油口通过液压管路连接平衡阀的第二进油口,平衡阀的第二出油口通过液压管路连接摆动油缸的下降油口。本发明还公开了一种电传动矿用自卸车折叠梯控制方法。本发明能够实现矿用自卸车的折叠梯平稳折叠升降,摆脱了折叠梯离地间隙的约束。
Folding ladder control device and control method of electric drive mining dump truck
电传动矿用自卸车折叠梯控制装置及其控制方法
2022-12-09
Patent
Elektronische Ressource
Chinesisch
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