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英国普利斯曼(Priestman)公司新研制的 VC20型拉铲长臂挖掘机,与以前生产的 VC15型机相比,由于采用了二节伸缩动臂,可变配重、保险开关等结构后具有挖掘半径大、斗容量大、装修方便、安全可靠等优点。其主要的技术改进及性能参数如下:1.VC15型机采用的主液压泵是双联齿轮泵,排量为103L/min,工作压力为206Pa;而 VC20型机则配用6缸水冷涡轮增压柴油机,功率100kW,转速2100r/min,全液压操作,主液压泵也是双联齿轮泵,排量为145r/min,最大压力276Pa,由于流量、压力提高,挖掘能力和变速都有提高。2.VC20型机带有可变配重,操作方便,
The VC20 type shovel long arm excavator newly developed by Priestman (UK), compared with the previously produced VC15 type machine, due to the adoption of two sections of telescopic boom, variable weight, safety switch and other structures It has the advantages of large digging radius, large bucket capacity, convenient decoration, and safety and reliability. The main technical improvements and performance parameters are as follows: 1. The main hydraulic pump used in the VC15 model is a double gear pump with a displacement of 103L/min and a working pressure of 206Pa; while the VC20 model is equipped with a 6-cylinder water-cooled turbine. Pressure diesel engine, power 100kW, speed 2100r/min, full hydraulic operation, the main hydraulic pump is double gear pump, displacement 145r/min, maximum pressure 276Pa, due to flow, pressure increase, mining capacity and speed have improved. 2.VC20 machine with variable weight, easy to operate,