A Service Test Bench for Power Drilling Machines

This paper describes the principle and structure of the service test bench for power drilling machines. The test bench can measure such parameters as zero load, load current, phase phase voltage, impact frequency, rotary speed of drill rod and twisting moment. By comparing with actually measured data obtained in the field test, it is found that the test bench is characterized by simple operation, accurate data, low labour intensity and effective evaluation of power drilling machine′s quality.