High-efficiency helical water-through jackrod
A drill pipe and screw technology, which is applied in the field of high-efficiency helical water-passing drill pipes, can solve problems such as affecting mine production, clogging the drill pipe with coal dust, and increasing the cost of excavation, so as to reduce hole collapse and sticking, reduce coal dust, and improve The effect of drilling efficiency
A drill pipe and screw technology, which is applied in the field of high-efficiency helical water-passing drill pipes, can solve problems such as affecting mine production, clogging the drill pipe with coal dust, and increasing the cost of excavation, so as to reduce hole collapse and sticking, reduce coal dust, and improve The effect of drilling efficiency
CN101294481AInactive Publication Date: 2008-10-29HEBEI JIKAI IND GRP +1
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[0015] As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, the present invention has several (such as one or two or more) drill pipe units, and each drill pipe unit has drill pipe core 8, is fixed on the drill pipe core The helix 9 on the top, the square rod 5 fixedly connected with the drill pipe core (the square rod inserted into the connection hole in the drill pipe core can be fixedly connected with it by hot pressing), the retaining ring 4 fixed on the square rod, and the retaining ring matched The horizontal pin 3, the spring body 2 which realizes the plug-in positioning of two adjacent drill pipe units to connect the horizontal pin as a limit support. Both the square rod and the drill pipe core have (axial) water ventilation holes, and the water ventilation holes of the two are connected. The drill pipe core 8 is wrapped around the upper spiral body 9 to form a coal channel, which facilitates the export of coal powder during drilling. The cross pin can be a cylindrical shape w...
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The invention discloses an efficient water spiral drill pipe which comprises a plurality of drill pipe units. Each drill pipe unit comprises a drill pipe core, a spiral body, a tetragonal rod, a retaining ring, a lateral pin and a spring body which supports the lateral pin for splicing-positioning and connecting two adjacent drill pipe units into one body. The spring body of each drill pipe unit is provide with a cylindrical connector which is nested and clamped in a water and gas vent at the end of the tetragonal rod of the drill pipe unit, a bending knob which is connected with the connector into one body and is clamped in the end groove of the tetragonal rod, and a flat spring which is connected with the connector into one body and is inclined in the water and gas vent of the tetragonal rod; and the tail of the flat spring bends upwards for supporting the bottom end of the lateral pin on the tetragonal rod. The drill pipe has little possibility of blockage, solves the problem that drill pipe is difficult for water and gas passing through, and effectively reduces the occurrence of hole collapse, drill pipe sticking and drill pipe losing, and improves the working environment by reducing coal dust. The drill pipe has the advantages of wide application, high drilling efficiency and reduced drilling cost.
Description
technical field [0001] The invention relates to a tool for drilling holes in coal seams, in particular to a high-efficiency helical water-through drilling rod. Background technique [0002] In the process of coal mine production, in order to prevent coal and gas outburst accidents, it is necessary to drill release holes in the coal seam before tunneling to release the gas in the coal seam to eliminate the stress of the coal seam. The drill pipes used for drilling in existing coal mines are common auger drill pipes. The common auger drill pipes have several drill pipe units that are connected as a whole through insertion and positioning. Each drill pipe unit has a drill pipe core, a spiral body, a square rod, A retaining ring fixed on the square bar, a horizontal pin matched with the retaining ring, and a helical spring (spring body) for limiting support of the horizontal pin. Even if it is changed to a water-passing drill pipe in the form of a helical spring limited to the ...
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Patent Timeline
29 Oct 2008
Publication
CN101294481A
- IPC
- E21B17/22
- Inventors
- 赵盘胜; 刘占宏