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1.管路连接方法某型工程机械四联多路换向阀中的第1、2联多路阀,用于工作装置升、降和前、后倾,第3、4联多路阀用于操纵属具动作,或实现其他功能。胶管1和胶管2为1组油路,连接到换向阀第4联进油和回油接口上,胶管3和胶管4为另1组油路,连接到换向阀第3联进油和回油接口上,如图1a所示。2.存在问题在一般情况下,四联多路换向阀的2个换向阀即可满足该工程机械使用要求,其余2个换向阀为备用。但是在需
1. Piping Connection Method A type of construction machinery four-way multi-way valve in the first and second multi-way valve for the working device up, down and before and after the dump, the third and fourth multi-valve To manipulate the attachment, or to achieve other functions. Hose 1 and hose 2 for a group of oil, connected to the fourth valve into the valve and into the oil return port, hose 3 and hose 4 for another group of oil, connected to the valve into the third and Back to the oil interface, as shown in Figure 1a. 2. Existing problems Under normal circumstances, the four multi-way valve 2 to the valve to meet the requirements of the construction machinery, the remaining two for the backup valve. But in need