Hydraulic drive percussion drilling tool
A drilling tool and hydraulic impact technology, which is applied to drilling equipment, driving devices for drilling in wellbore, and earth-moving drilling and mining, etc., can solve the problems of short hammer stroke, complex structure, and short hammer acceleration time.
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[0032] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.
[0033] Such as Figure 1A , Figure 1B , Figure 1C As shown, the present invention proposes a hydraulic percussion drilling tool 100, the drilling tool 100 includes an upper sub-section 11 and a connecting sub-section 12 fixedly connected to the lower end of the upper sub-section 11; the upper sub-section 11 is cylindrical, The upper end is a taper threaded male buckle connected to the drill pipe, and the lower end is a tapered threaded box joint connected to the connecting nipple 12, and the inside is a hollow structure; figure 2 As shown, the connecting short joint 12 is also cylindrical, the upper end is a tapered thread connecting the upper short joint 11, the lower end is provided with a through hole 121 with an octagonal...
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