The deceleration gear used on the rotary drilling rig is various, in the light engineering piling device with small power, the use of tooth box, power selection box, and the size and structure of the gearbox similar to that of the car and tractor. In this device, in order to change the speed of the winch or turntable, a car or tractor tooth box is often set up, and the rotary drilling rig is installed on the tractor.
In many powerful devices there is a tooth box, which becomes an important part of the winch. The reducer is a separate transmission device of single motor, double motor reducer and turntable.
Chain drive device is used in rotary drilling rig piling project, mainly multi-row chain, because it can reduce the pitch and profile size of the chain drive device, but also increase the transmission power. The reducer is a gear transmission device, which is in a closed case and filled with oil. The use of a single motor or a double motor reducer depends on the power of the drive and the number of motors.
