Geological exploration counterboring-while-drilling device

Abstract

The invention discloses a geological exploration counterboring-while-drilling device. By using a high-pressure water flow matched with cutting blades, a counterboring hole is cut, the thermal effect is avoided, the cutting blades can be cooled, blade wear is reduced, and the inner diameter of the counterboring hole can be adjusted so as to meet the requirements of counterboring holes with different sizes. The geological exploration counterboring-while-drilling device is characterized in that one end of a connecting sleeve is connected with a drill bit through a fixed shaft, a water storage cavity is formed between the inner wall and the outer wall of the connecting sleeve, a fixed plate can slidably sleeve the fixed shaft, the top of the fixed plate is connected with one end of a connecting sleeve through at least three hydraulic rods, a plurality of connecting ears are fixed at the bottom of the fixed plate at equal intervals, a plurality of fixing ears corresponding to the connectingears are fixed on the drill bit, one ends of rotating sprinkling pipes are hinged with the fixing ears, the outer sides of the rotating sprinkling pipes are provided with the cutting blades, the cutting blades are connected with the outer surfaces of the rotating sprinkling pipes through bolts, the cutting blades are made of diamond, and the outer sides close to the cutting blades of the rotatingsprinkling pipes are provided with a row of high-pressure nozzles.

Description

technical field [0001] The invention relates to a hole reaming device for geological exploration while drilling, which belongs to the field of exploration equipment. In particular, it relates to a device that can use high-pressure water flow to cooperate with cutting blades to cut and ream holes, avoid thermal effects, cool down the cutting blades, reduce blade wear, and can adjust the inner diameter of reaming holes to meet the needs of reaming holes of different sizes. Background technique [0002] Borehole sampling is a commonly used sampling method in the process of geological exploration of coal mines. Rock and soil sampling is carried out through the sampling cylinder with a drill bit, which greatly facilitates the geological exploration work. However, during the drilling process, the drill pipe is prone to jamming. In order to avoid the jamming of the drilling tool, the hole reaming device is usually used to expand the borehole, and the currently used reaming device h...

AI Technical Summary

Problems solved by technology

[0002] Borehole sampling is a commonly used sampling method in the process of geological exploration of coal mines. Rock and soil sampling is carried out through the sampling cylinder with a drill bit, which greatly facilitates the geological exploration work. However, during the drilling process, the drill pipe is prone to jamming. In order to avoid the jamming of the drilling tool, the hole reaming device is usually used to expand the borehole, and the currently used reaming device has a simple structure. Small, poor cooling effect, short cutting blade life, easy to wear

[0003] Notification No. CN208430976U discloses a reamer for geological exploration, mainly composed of an outer tube, a first reamer, a reamer, a second reamer and a pilot drill, wherein the upper end of the reamer is connected to the first The reamer is fixedly connected, the lower end of the outer tube is fixedly inserted inside the first reamer, and the lower end surface of the outer tube is against the inner platform of the reamer bit, and the upper end of the second reamer is connected to the lower end of the reamer bit. Fixed connection, the pilot drill bit is fixedly installed on the lower end of the reamer, wherein the diameter of the pilot drill bit is smaller than the diameter of the reamer drill bit, when the reamer is in use, the gap between the reaming blade body and the drilling wall is small, and the cooling water flow cannot Effectively acting on the blade body, the blade body wears more and the service life is shorter

[0004] The notification number CN207110971U discloses a reamer and a reaming device. The reamer includes a connector, a guide rod, a drill bit and at least two reaming components; the guide rod is slidably connected to the connector, and the drill bit is fixed on the guide rod away from the connector. At one end, at least two reaming assemblies are distributed on the outside of the guide rod; the reaming assembly includes a first reaming arm, a second reaming arm and a third reaming arm, and one end of the first reaming arm is hinged to the connector , the other end of the first reaming arm is hinged to one end of the second reaming arm, the other end of the second reaming arm is hinged to one end of the third reaming arm, the other end of the third reaming arm is hinged to the drill bit, the The thermal wear of the reamer is relatively large during reaming, and the service life of the reaming blade body is relatively low

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