Low-speed rotation sub-transmission case body of drilling machine

Abstract

The invention discloses a low-speed rotation sub-transmission case body of a drilling machine, which is provided with an oil inlet pipeline and an oil return pipeline, wherein one end of the oil inlet pipeline is connected to an oil outlet of a hydraulic device, and the other end is connected with an oil inlet of an oil motor; the oil motor is connected with an input shaft in the sub-transmission case body and drives an output gear to rotate by utilizing engagement of an input gear on the input shaft, an intermediate gear on an intermediate shaft and the output gear on the output shaft; and the output gear is engaged with a transmission gear of the original transmission case body of the drilling machine, and a drill rod is driven to rotate in a low speed by a gear set of the transmission case body. The low-speed rotation sub-transmission case body fully utilizes the original hydraulic device and the transmission case body of the drilling machine and has few increased components and less change on the original structure of the drilling machine, thereby having simple structure; and few components are increased, the cost of the drilling machine is controlled, and the drilling machine has stronger market competitiveness and can meet the actual needs of users.

Description

technical field [0001] The invention relates to a transmission box of an engineering drilling rig, in particular to a low-speed rotating sub-transmission box of the drilling rig which drives the drilling rig to rotate at a low speed under conditions such as grouting. Background technique [0002] Engineering drilling rigs are mainly suitable for sampling in medium and shallow holes, and can also be used for engineering geological survey, hydrology, water wells and large-diameter engineering construction drilling and anchor hole construction. The drill pipe passes through the integral slip on the clamping device. Tight, rotated under the drive of the transmission box to generate the rotational power for drilling, the rotational speed of the drill pipe is relatively high, generally tens to thousands of revolutions per minute. After the drilling rig has drilled to a suitable depth, some projects need to grout into the borehole for reinforcement; during the grouting operation, i...

AI Technical Summary

Problems solved by technology

Most of the sub-transmission boxes in the prior art that drive the drill pipe to rotate at a low speed during the grouting operation stage are complex in structure. The addition of more complex split power components also increases the overall structure of the drilling rig, increases the cost of the drilling rig, and complicates the control and operation of the drilling rig, which cannot meet the actual needs of users

Images