Descripción
The general layout of main unit for 350HP workover rig is mainly as follows. The engine CAT C9 and transmission box ALLISON 4700 OFS are adopted in power system. The power outputted from diesel engine is passed to transfer box through transmission box and transmission shaft. The power from transmission shaft is outputted by three ways. One way is that the power drives drawworks through angle gear box and chains; the other two ways are that the power is outputted to drive front and rear axle separately.