Introduction of horizontal directional drilling machine 07-Structure of horizontal directional drilling power head

Date: 20200616

The structure of the power head of the horizontal drilling rig is generally driven by a high-speed motor, the power head is driven by the speed reducer, the drill shaft is driven by the output shaft of the reduction box, and the output shaft is hollow. The power head has the following functions: driving the drill bit to rotate; withstanding the reaction force generated during drilling and towing; mud entering the drill pipe.

At present, the structure of the power head of the domestic horizontal directional drill is basically the same, the difference is that: the selection of the reducer is different: the horizontal directional drill of the same tonnage cannot select the exact same reducer, so the reduction ratio and performance parameters of various manufacturers have Changed. The reduction ratio of the power head is different: due to the change of the reduction gear ratio, the reduction ratio of the power head also changes. At present, the transmission mode of the power head mainly includes chain transmission and gear transmission; for example, the transmission mode of the power head of the CASE rig is chain transmission: the advantages of the chain transmission are simple structure, easy manufacturing, and the disadvantages are poor transmission balance, short life, and output torque small.

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