Engineering machine and flow distributing and converging hydraulic control system thereof
2011
The invention discloses a flow distributing and converging hydraulic control system for an engineering machine, which comprises a first oil supplying pipeline, a second oil supplying pipeline, a first load feedback oil pipeline, a second load feedback oil pipeline and a pressure stop valve (1), wherein the first oil supplying pipeline and the second oil supplying pipeline are communicated or disconnected through a flow distributing and converging valve, and the first load feedback oil pipeline and the second load feedback oil pipeline are respectively connected with a first oil inlet and a second oil inlet of a shuttle valve (2). An oil outlet of the shuttle valve (2) is communicated with the second oil supplying pipeline through a second flow compensation valve (6). The first load feedback oil pipeline is communicated or disconnected with the first oil inlet of the shuttle valve (2) through the pressure stop valve (1). When a second working link is started prior to a first working link, the hydraulic control system can avoid influence including impact and vibration to the second working link caused by the first working link. The invention further discloses the engineering machine, which comprises a vehicle loading system adopting the flow distributing and converging hydraulic control system, and the engineering machine has the corresponding technical effect.
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