Hard rock film coating dill bit

Abstract

The invention discloses a hard rock film coating dill bit. The hard rock film coating dill bit comprises two bit tools and a drill bit body, the bit tools are symmetrically arranged on the drill bit body, and the bit tools are wear-resisting reinforced bit tools. Body protecting alloys distributed peripherally are located at the positions, located at the lower ends of the bit tools, of the drill bit body, water through holes are formed in the drill bit body, drill bit retreating blades are symmetrically arranged at the positions, located at the lower ends of the bit tools, of the drill bit body, and the drill bit retreating blades are installed on the drill bit body through rotating shafts. Connecting rods which are movably installed are arranged on the drill bit body, the connecting rodsare of a round structure and water through holes are arranged in the center positions of the connecting rods, a fixing block used for preventing the mutual rotation of the connecting rods and the drill bit body is arranged at the upper ends of the connecting rods, the fixed block can move up and down along a sliding groove formed in the drill bit body, and a spring is arranged between the lower end of the fixing block and the drill bit body. The hard rock film coating dill bit can realize the rapid drilling of a mine, and at the same time, during drill bit retreating, the drill bit can be retreated quickly through the drill bit retreating blades to prevent the drill bit from sticking when the drill bit is retreated.

Description

technical field

[0001] The invention relates to the technical fields of mining and geological drilling, in particular to a hard rock coated drill bit. Background technique

[0002] The drill bit is a tool that directly contacts the rock during the drilling process and breaks the rock through cutting and punching. The drill bits widely used in modern drilling engineering mainly include roller cone bits and PDC bits (Polycrystalline Diamond Compact Bits polycrystalline diamond compact bits). Today, both the roller cone bit and the PDC bit have been developed to a fairly high level, but there are still some insurmountable problems. One is fear of reaming and reaming, which will damage the roller cone bit of the sealed bearing, especially the PDC bit; the other is that the movement of the center rock at the bottom of the well is small, the function is insufficient, and the center rock is not easy to break, which affects the ROP of the drill bit. Roller cone bits and PDC bits h...

Examples

Embodiment Construction

[0015] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without cre...

technical field

[0001] The invention relates to the technical fields of mining and geological drilling, in particular to a hard rock coated drill bit. Background technique

[0002] The drill bit is a tool that directly contacts the rock during the drilling process and breaks the rock through cutting and punching. The drill bits widely used in modern drilling engineering mainly include roller cone bits and PDC bits (Polycrystalline Diamond Compact Bits polycrystalline diamond compact bits). Today, both the roller cone bit and the PDC bit have been developed to a fairly high level, but there are still some insurmountable problems. One is fear of reaming and reaming, which will damage the roller cone bit of the sealed bearing, especially the PDC bit; the other is that the movement of the center rock at the bottom of the well is small, the function is insufficient, and the center rock is not easy to break, which affects the ROP of the drill bit. Roller cone bits and PDC bits h...

Examples

Embodiment Construction

[0015] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without cre...

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