Reversible drilling box for roof bolter
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- YANKUANG GRP CO LTD
- Publication Date
- 2020-01-17
Smart Images

Figure 1 
Figure 2 
Figure 3
Abstract
Description
technical field
[0001] The invention relates to the field of coal mine mining equipment, in particular to a reversible drill box for a rock bolt drill. Background technique
[0002] At present, bolting technology is mostly used in underground coal mines, and pneumatic or hydraulic bolting rigs are used to construct bolts. Hydraulic bolting rigs have the advantages of large torque, high speed, and fast construction speed, which is the mainstream trend of current coal mine bolting construction equipment. However, due to the limited equipment space in underground coal mines, the stroke of the rock bolter is relatively short, so it is impossible to drill holes in one operation, and brazing operations are required, that is, drilling with a small stroke at one time, and drilling all the holes in the second brazing construction. In the existing technology, the drilling rig needs to be removed for brazing, which increases the secondary positioning process of the drilling rig, prolon...