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DQZJ—20Y液力传动钻机采用液力机械变速箱,传动柔和,适应外载荷变化的能力强,可实现无级变速变矩及反转制动。现场试验表明,钻机功率利用率高,起升速度快;反转制动特性减轻了带刹车的载荷;变矩特性加强了处理事故的能力。通过液力变矩器驱动钻井泵可同时保护原动机和工作机;在保持柴油机额定转速的条件下,可实现泵压的全过程控制。针对散热装置、倒挡离合器和过滤器等方面暴露的问题提出了改进意见。
DQZJ-20Y hydraulic drilling rig hydraulic mechanical transmission, transmission gentle, strong ability to adapt to changes in external load, enabling variable speed torque and reverse braking. Field tests show that the drill has high power utilization rate and fast lifting speed, and the reversing braking characteristic reduces the load with braking. The torque-changing characteristic enhances the ability to handle accidents. Through the torque converter to drive the drilling pump can protect the prime mover and the working machine at the same time; under the condition of maintaining the rated speed of the diesel engine, the whole process of the pump pressure can be controlled. Suggestions were made for the problems of exposure to heat sinks, reverse clutches and filters.