Drilling Aids
An auxiliary tool and drilling technology, applied to drilling tools, drilling equipment, drill bits, etc., can solve problems such as difficult unloading of slag, compaction of drilling slag, and low drilling efficiency of large-diameter hard rock
Active Publication Date: 2022-05-03
天明(南京)智能装备科技有限公司
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Problems solved by technology
These drilling rigs have their own characteristics in terms of cost, applicability, and labor-intensive degree. When drilling in hard rock, there is a common problem of low drilling efficiency. At present, the low drilling efficiency of large-diameter hard rock has become a recognized industry problem worldwide.
[0003] Ordinary rotary drilling rigs also have the problem of slag unloading. Generally, the method of continuously shaking the drill bit left and right is used to make the slag slide out of the cylinder by the weight of the slag. When the slag is not compacted or the degree of compaction is not When the drilling slag is high, this method can realize slag discharge well. When the drilling slag is compacted in the drill bit barrel, sometimes it is difficult to realize the slag discharge smoothly by shaking the drill bit from side to side, even in some drilling holes. When the diameter is small and it is easy to cause serious drilling slag compaction, the drill bit with open and close cylinder will be used to realize slag unloading conveniently and reliably
Method used
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Embodiment 1
[0026] refer to figure 1 , combined with figure 2 , a drilling auxiliary tool, comprising a plumb pipe 1 and a support tube 2;
[0027] The plumb pipe 1 is fixedly fitted with the inner cylinder 1301 of the rotary drilling bit 13 for receiving the impact force of the rotary drilling bit 13 to realize slag discharge. The plumb pipe 1 above the impact preventing ring 3 is set as The guide post 101 set by the inner cylinder 1301 of the rotary drilling bit 13 is convenient, the plumb pipe 1 below the impact prevention ring 3 is connected with the counterweight 4, and the plumb pipe between the impact prevention ring 3 and the counterweight 4 1 The upper sleeve is equipped with a spring buffer device;
[0028] The spring buffer device includes a spring tube 5 set on the plumb tube 1, a buffer spring 6 is set between the plumb tube 1 and the spring tube 5, and the upper end of the buffer spring 6 is fixed on the plumb tube. The upper limit mechanism of the limit is fixedly provi...
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The utility model relates to a drilling auxiliary tool, which relates to the technical field of pile foundation engineering, and includes a plumb pipe and a support cylinder; an impact prevention ring is fixedly set on the plumb pipe, and the plumb pipe above the impact prevention ring is set as a guide column, and the impact prevention A counterweight is connected to the plumb tube below the ring, and a spring buffer device is set on the plumb tube between the impact prevention ring and the counterweight; the spring buffer device includes a spring tube set on the plumb tube, The support cylinder and the spring cylinder are connected by a cross swing mechanism; the cross swing mechanism includes an annular swing beam, which is inwardly connected to the spring cylinder through a pin shaft, and the annular swing beam is outwardly connected to the support cylinder through a pin shaft. The invention can quickly and reliably remove the drilling slag accumulated in the cylinder body of the rotary drilling bit.
Description
technical field [0001] The invention relates to the technical field of pile foundation engineering, in particular to a drilling auxiliary tool. Background technique [0002] With the development of modern industry, large-diameter geological boreholes are more and more widely used, and these boreholes are used in many fields, such as: pile foundation field, mine field (wells for various purposes), sewage treatment field ( aeration wells), etc. At present, there are various drilling equipment and drilling techniques for large-diameter drilling. Available equipment includes rotary drilling rigs, full-face reverse circulation drilling rigs, percussion drilling rigs, diving rigs and ordinary positive circulation rotary drilling rigs, etc., among which At present, the most widely used are rotary drilling rigs and full-face reverse circulation drilling rigs. These drilling rigs have their own characteristics in terms of cost, applicability, and labor-intensive degree. When drill...
Claims
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IPC IPC(8): E21B12/06E21B3/00E21B10/42
CPCE21B12/06E21B3/00E21B10/42
Inventor 卢明立陈海华刘祥军刘攀军陈义俊
Owner 天明(南京)智能装备科技有限公司