The invention discloses a walking hydraulic system and a shear fork type lifting working platform. The system comprises a hydraulic oil tank, an oil pump, a first motor, a second motor, a first electromagnetic reversing valve, a second electromagnetic reversing valve, a third electromagnetic reversing valve, a fourth electromagnetic reversing valve, a first balance valve, a second balance valve and a flow distributing and collecting valve. An original two-position four-way electromagnetic directional valve is replaced by the third electromagnetic directional valve and the fourth electromagnetic directional valve, and the flow distributing and collecting valve is additionally arranged, so that the flow of the two motors is evenly distributed during low-speed walking, and the problems that long-distance linear walking cannot be achieved, and slipping and weakness are prone to occurring during low-speed walking are solved; the flow collecting opening of the flow distributing and collecting valve is connected with the second electromagnetic directional valve in parallel, oil ways are switched through the second electromagnetic directional valve without passing through the flow distributing and collecting valve, and the problems of high system pressure and high energy consumption caused by the fact that oil flows through the flow distributing and collecting valve during high-speed walking are solved.
本发明公开了一种行走液压系统及剪叉式升降工作平台,所述系统包括液压油箱、油泵、第一马达和第二马达、第一电磁换向阀、第二电磁换向阀、第三电磁换向阀、第四电磁换向阀、第一平衡阀和第二平衡阀、分流集流阀;本发明将原有的两位四通电磁换向阀更换成第三电磁换向阀和第四电磁换向阀,并增加分流集流阀,保证了低速行走时两个马达流量的平均分配,解决了无法长距离直线行走和低速行走易打滑无力的问题;分流集流阀的集流口并联第二电磁换向阀,通过第二电磁换向阀切换油路而不经过分流集流阀,解决了高速行走时油液流经分流集流阀导致系统压力高,能耗高的问题。
Walking hydraulic system and shear fork type lifting working platform
一种行走液压系统及剪叉式升降工作平台
2024-07-23
Patent
Electronic Resource
Chinese
IPC: | F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last |
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