A crane amplitude variation system comprises an oil inlet, an oil outlet, an amplitude variation oil cylinder, a compensation oil cylinder, a nitrogen cylinder set and a control valve set, the control valve set is used for controlling the communication state of the amplitude variation oil cylinder and the oil inlet or the oil outlet and the communication state of the compensation oil cylinder and the oil inlet or the oil outlet, and the amplitude variation oil cylinder comprises a rodless cavity and a rod cavity; the compensation oil cylinder comprises a first oil cavity and a gas cavity, the first oil cavity is communicated with the rodless cavity through a first oil way, and the gas cavity is communicated with the nitrogen cylinder set through a first gas way so that the gas cavity can apply preload to the first oil cavity, and then the gas cavity can apply preload to the rodless cavity.
一种起重机变幅系统,包括进油口、出油口、变幅油缸、补偿油缸、氮气瓶组以及控制阀组,所述控制阀组用于控制所述变幅油缸以及所述补偿油缸与所述进油口或所述出油口的连通状态,所述变幅油缸包括无杆腔以及有杆腔,所述补偿油缸包括第一油腔以及气腔,所述第一油腔通过第一油路与所述无杆腔相连通,所述气腔与通过第一气路与所述氮气瓶组相连通,以使所述气腔向所述第一油腔施加预负载,进而向所述无杆腔施加预负载。
Crane, luffing system thereof and luffing adjustment method of crane
起重机及其变幅系统、起重机变幅调节方法
2024-01-09
Patent
Electronic Resource
Chinese
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