CN-224228618-U - Drilling bit for exploratory rock

CN224228618UCN 224228618 UCN224228618 UCN 224228618UCN-224228618-U

Abstract

The utility model discloses a drilling bit for prospecting, which comprises a bit and a drill rod, wherein the bit and the drill rod are detachably connected through the cooperation of a first connecting piece and a second connecting piece. The first connecting piece and the second connecting piece are respectively arranged on the drill bit and the drill rod. The first connecting piece comprises a plurality of first spiral limiting blocks, and the second connecting piece is provided with second spiral limiting blocks in clearance fit with the first spiral limiting blocks. The axial bearing capacity and the circumferential torque resistance of the joint of the drill bit and the drill rod are enhanced by the mutual matching of the second spiral limiting block and the first spiral limiting block. Through the cooperation of first connecting piece and second connecting piece, make drill bit and the relative fixed anti-rotation cover of drilling rod circumference on the second connecting piece realize the quick equipment and the dismantlement of drill bit and drilling rod. The anti-rotation cover isolates the second connecting piece and the first connecting piece from the outside, and prevents the outside impurities from affecting the combination of the first connecting piece and the second connecting piece.

Inventors

ZHANG SHUZHI
ZHOU NING
QIN HAOJIE
Xie Huangchang
QIAO WEI
WANG JING
YU YONGSHAN
LI ZHIJUN
HUANG JIALI

Assignees

广西自然资源职业技术学院

Dates

Publication Date: 20260512
Application Date: 20250624

Claims (10)

1. The utility model provides a exploratory drilling bit, includes drill bit, drilling rod, the drill bit with the drilling rod passes through coupling assembling and can dismantle the connection, its characterized in that, coupling assembling includes: The first connecting piece comprises a base and a plurality of first spiral limiting blocks, wherein the first spiral limiting blocks are uniformly distributed around the central part of one end surface of the base at intervals; The second connecting piece comprises a bottom plate and a plurality of second spiral limiting blocks in clearance fit with the first spiral limiting blocks, wherein the second spiral limiting blocks are uniformly distributed around the central part of one end face of the bottom plate at intervals; The anti-rotation cover is used for fixing the circumferential position of the first connecting piece relative to the second connecting piece and covers the outer parts of the first connecting piece and the second connecting piece which are fixedly connected so as to isolate the first connecting piece and the second connecting piece from the outside; the anti-rotation cover is detachably and fixedly connected with the base or the base plate.
2. The drilling bit for prospecting according to claim 1, wherein the surrounding central parts of the plurality of first spiral limiting blocks on the base are provided with positioning columns, the surrounding central parts of the plurality of second spiral limiting blocks on the base plate are provided with positioning holes matched with the positioning columns, the inner side parts of the second spiral limiting blocks, which are close to the positioning holes, are provided with first guiding chamfers, and the height of the positioning columns is higher than that of the first spiral limiting blocks; Or the surrounding center parts of the plurality of second spiral limiting blocks on the bottom plate are provided with positioning columns, the surrounding center parts of the plurality of first spiral limiting blocks on the base are provided with positioning holes matched with the positioning columns, the inner side parts of the first spiral limiting blocks, which are close to the positioning holes, are provided with first guide chamfers, and the height of the positioning columns is higher than that of the second spiral limiting blocks.
3. The drilling bit for prospecting according to claim 1, wherein the anti-rotation cover comprises an anti-rotation ring and a cover shell, the anti-rotation ring is fixedly connected with the bottom plate, one end face of the cover shell is fixedly connected with the anti-rotation ring, and the other end face is attached to the base; Or the anti-rotation ring is fixedly connected with the base, one end face of the housing is fixedly connected with the anti-rotation ring, and the other end face of the housing is attached to the bottom plate.
4. A drill bit for mineral exploration according to claim 3, wherein the housing is cylindrical, a slope is arranged on the end face of the housing far away from the anti-rotation ring, a chamfer matched with the slope is arranged on the base or the bottom plate, and a sealing ring jointed with the slope is arranged on the chamfer.
5. The drilling bit for prospecting according to claim 3 or 4, wherein the anti-rotation ring is provided with a plurality of strong magnetic protruding columns on the inner top wall close to the base or the bottom plate, a plurality of Jiang Citu columns are evenly distributed around the central part of the anti-rotation ring in an annular interval, and the base or the bottom plate is provided with fixing holes matched with the Jiang Citu columns.
6. The drill bit for mineral exploration according to claim 5, wherein an outer protruding portion is arranged at a circumferential position of the edge of the anti-rotation ring corresponding to the Jiang Citu column, and a boss is arranged at a position of the end face of the anti-rotation ring corresponding to the Jiang Citu column.
7. The drill bit for mineral exploration according to claim 3, wherein when the anti-rotation ring is fixedly connected with the base, a plurality of reinforcing ribs are arranged on the connecting part of the drill rod and the base in the circumferential direction, the intervals of the reinforcing ribs are the same, and the anti-rotation ring is provided with openings for the reinforcing ribs to pass through.
8. The drilling bit for prospecting according to claim 3, wherein the first screw limiting block is provided with an inner hole when the anti-rotation ring is fixedly connected with the base, or the second screw limiting block is provided with the inner hole when the anti-rotation ring is fixedly connected with the bottom plate; The anti-rotation ring is provided with a pin at the position corresponding to the inner hole, one end of the pin penetrates through the anti-rotation ring and part of the pin enters the inner hole, and the end surface of the pin which does not enter the inner hole is attached to the inner top wall of the anti-rotation ring.
9. The drill bit for mineral exploration according to claim 8, wherein a spring is arranged at the bottom of the inner hole, one end of the spring is contacted with the bottom wall of the inner hole, and the other end of the spring is contacted with the end of the pin entering the inner hole.
10. The drill bit for mineral exploration according to claim 8 or 9, wherein the pin comprises a pin and a head, the pin penetrates through the anti-rotation ring and the inner hole, the head and one end of the pin, which does not enter the inner hole, are integrated, the head is polygonal, and a polygonal counter bore matched with the head is formed in the anti-rotation ring.

Description

Drilling bit for exploratory rock Technical Field The utility model relates to the field of geological prospecting, in particular to a drilling bit for prospecting. Background Mineral exploration is abbreviated as exploratory mining, and potential mineral resources are systematically evaluated through technical means such as geological investigation, drilling and the like. The exploration requires the use of a drill bit for breaking up rock, taking cores or cuttings. During the working process of the drill bit, the drill rod is required to continuously provide axial pressure and circumferential torque, so that the drill bit is ensured to continuously drill under the rock stratum. Conventional drill bit and drilling rod fixed connection through threaded connection's mode, the axial bearing capacity and the circumference anti-torque of screw thread tooth are not strong, along with the increase of live time, appear screw thread tooth deformation and fracture easily even, lead to the drill bit to become flexible relative the drilling rod, and then can't normally develop the prospect work. And the drill bit and the drill rod are difficult to disassemble, so that equipment maintenance and maintenance are inconvenient. Hard impurities such as broken stone are more likely to fall into the threads in the use environment of the drill bit, so that the thread damage is further aggravated. The normal service life of the drill bit and the drill rod is limited by the mode of threaded connection of the existing drill bit and the drill rod. Disclosure of utility model The utility model aims to disclose a drilling bit for prospecting, which not only keeps stable connection between the bit and a drill rod, but also enhances the axial bearing and torque resistance of the connection part between the bit and the drill rod, and prolongs the service life of the bit and the drill rod. In order to achieve the above purpose, the utility model discloses a drilling bit for prospecting, a drill bit and a drill rod, wherein the drill bit and the drill rod are detachably connected through a connecting assembly, and the connecting assembly comprises: The first connecting piece comprises a base and a plurality of first spiral limiting blocks, wherein the first spiral limiting blocks are uniformly distributed around the central part of one end surface of the base at intervals; The second connecting piece comprises a bottom plate and a plurality of second spiral limiting blocks in clearance fit with the first spiral limiting blocks, wherein the second spiral limiting blocks are uniformly distributed around the central part of one end face of the bottom plate at intervals; The anti-rotation cover is used for fixing the circumferential position of the first connecting piece relative to the second connecting piece and covers the outer parts of the first connecting piece and the second connecting piece which are fixedly connected so as to isolate the first connecting piece and the second connecting piece from the outside; the anti-rotation cover is detachably and fixedly connected with the base or the base plate. As an optional implementation mode, a positioning column is arranged at the surrounding central part of the plurality of first spiral limiting blocks on the base, a positioning hole matched with the positioning column is arranged at the surrounding central part of the plurality of second spiral limiting blocks on the bottom plate, and a first guiding chamfer is arranged at the inner side part of the second spiral limiting blocks close to the positioning hole; Or the surrounding central parts of the plurality of second spiral limiting blocks on the bottom plate are provided with positioning columns, the surrounding central parts of the plurality of first spiral limiting blocks on the base are provided with positioning holes matched with the positioning columns, the inner side parts of the first spiral limiting blocks, which are close to the positioning holes, are provided with first guide chamfers, and the height of the positioning columns is higher than that of the second spiral limiting blocks. As an optional implementation mode, the anti-rotation cover comprises an anti-rotation ring and a cover shell, wherein the anti-rotation ring is fixedly connected with the bottom plate, one end face of the cover shell is fixedly connected with the anti-rotation ring, the other end face of the cover shell is attached to the base, or the anti-rotation ring is fixedly connected with the base, one end face of the cover shell is fixedly connected with the anti-rotation ring, and the other end face of the cover shell is attached to the bottom plate. As an optional implementation mode, the housing is cylindrical, the end face, far away from the anti-rotation ring, of the housing is provided with a slope, the base or the bottom plate is provided with a chamfer matched with the slope, and the chamfer is provided with a sealing ring attached to the slope.