CN-116398057-B - Five-wing seven-tooth drill bit

CN116398057BCN 116398057 BCN116398057 BCN 116398057BCN-116398057-B

Abstract

The invention belongs to the technical field of drill bits, and particularly relates to a five-wing seven-tooth drill bit which comprises a replaceable drill bit and a connector, wherein the drill bit is in threaded connection with the connector, a rotating mechanism is arranged in the connector, the rotating mechanism comprises a threaded seat positioned at the center of the connector, the threaded seat is connected with the inner wall of the connector through a horizontal connecting rod I, a vertical threaded rod is in threaded connection with the threaded seat, a ball body is fixed at the top of the threaded rod, the ball body is embedded into a movable block, the upper surface of the movable block is fixedly connected with a movable rod, the movable rod is hinged with one end of a vertical rotary disc, the other end of the rotary disc is fixedly connected with a horizontal rotary rod, the horizontal rotary rod penetrates through the inner wall of the connector and is sealed at the joint, a bracket is fixed at the bottom of the threaded rod, and an arc plate for wiping the inner wall of the connector is arranged on the bracket. The rotary mechanism is arranged in the connector, and can realize up-and-down movement and self-transmission of the arc-shaped plate at the same time, so that the cleaning effect of the arc-shaped plate on the inner wall of the drill bit is improved.

Inventors

SHEN JIANBO
Huang Hepeng
GUO HONGMEI
MA BOTONG
ZHOU GUANGFEI
WANG TAO
ZHOU LIJUAN

Assignees

山东源运通矿山装备科技有限公司

Dates

Publication Date: 20260505
Application Date: 20230412

Claims (6)

1. The five-wing seven-tooth drill bit comprises a replaceable drill bit (1) and a connector (2) and is characterized in that the drill bit (1) is in threaded connection with the connector (2), a rotating mechanism is arranged in the connector (2), the rotating mechanism comprises a threaded seat (7) positioned at the center of the connector (2), the threaded seat (7) is connected with the inner wall of the connector (2) through a horizontal connecting rod I (8), a vertical threaded rod (9) is in threaded connection with the threaded seat (7), a ball body (10) is fixed at the top of the threaded rod (9), the ball body (10) is embedded into a movable block (11), a movable rod (12) is fixedly connected to the upper surface of the movable block (11), one end of the movable rod (12) is hinged with one end of a vertical rotary plate (13), the other end of the rotary plate (13) is fixedly connected with a horizontal rotary rod (14), the horizontal rotary rod (14) penetrates through the inner wall of the connector (2) and is subjected to sealing treatment at the joint, the rotary rod (13) is driven to rotate in the vertical direction through the horizontal rotary rod (14), a bracket (15) is fixed at the bottom of the threaded rod (9), and an arc plate (18) for wiping the inner wall of the connector (2) is arranged on the bracket (15). The end part of one end, connected with the drill bit (1), of the connector (2) is integrally connected with a cylindrical section (4), a clamp (5) is arranged between the cylindrical section (4) and the drill bit (1), the inner diameter of the clamp (5) is stepped, one end of the clamp is clamped on an external thread of the drill bit (1), the other end of the clamp is clamped on the cylindrical section (4), and the clamp (5) is connected with the cylindrical section (4) through a bolt (6); the support (15) is a star-shaped support, and a cleaning part (16) for cleaning the inner wall of the bottom of the drill bit (1) is arranged at the bottom of the star-shaped support; the arc-shaped plate (18) is connected with the star-shaped bracket through a horizontal connecting rod III (19); the horizontal rotary rod (14) is connected with the inner wall of the connector (2) through a second horizontal connecting rod (3), and the horizontal rotary rod (14) can rotate relative to the second horizontal connecting rod (3).
2. The five-wing seven-tooth drill bit according to claim 1 is characterized in that one end of the drill bit (1) is provided with external threads, the end face of the other end of the drill bit is provided with a water spraying hole (17), one end of the connector (2) is provided with internal threads, and the drill bit (1) is connected to the connector (2) in a threaded mode.
3. The five-wing seven-tooth drill bit according to claim 2, wherein the water spraying holes (17) are provided with a protective net.
4. A five-winged seven-tooth drill bit according to any one of claims 1-3, characterized in that the drill bit (1) is provided with five winged teeth (20) along a circumferential array, the winged teeth (20) comprising a primary drilling tooth (21) and two secondary drilling teeth (22) provided at the bottom end of the drill bit (1).
5. The five-wing seven-tooth drill bit according to claim 4, wherein the secondary drilling teeth (22) are wedge-shaped, the two secondary drilling teeth (22) are circumferentially arranged, and the direction of rotation of the secondary drilling teeth (22) is the same as the direction of rotation of the primary drilling teeth (21).
6. The five-wing seven-tooth drill bit according to claim 4, wherein the main drill tooth (21) and the auxiliary drill tooth (22) are made of high-speed steel or tungsten steel.

Description

Five-wing seven-tooth drill bit Technical Field The invention belongs to the technical field of drill bits, and particularly relates to a five-wing seven-tooth drill bit. Background The drill bit is an important tool for breaking rock in the drilling process, when the drill bit is worn or broken, in order to be capable of quickly replacing the drill bit, chinese patent CN110607992A proposes a five-wing seven-tooth drill bit which comprises a replaceable drill bit, the drill bit is arranged on a drill rod through a connecting device, the drill bit comprises five wing teeth which are arranged in a circumferential array, the wing teeth comprise main drilling teeth arranged at the bottom end of the drill bit, a deep drilling part of the main drilling teeth is fixed under the drill bit, a cutting part of the main drilling teeth is fixedly connected with a supporting block at the rear side of the main drilling teeth, the outer edge of the bottom of the drill bit is suspended, a supporting rotor is fixedly connected at the rear side of the cutting part, the supporting rotor is fixed on the side face of the drill bit, two auxiliary drilling teeth are further arranged at the bottom of the drill bit, a water through pipe is arranged at the bottom of the drill bit, the water spraying holes are communicated with the water through pipe, and the existence of the supporting block and the supporting rotor prevents the main rotor from breaking when encountering hard rock. The above-mentioned patent is equipped with the protection network in the hole for preventing the hole for water spraying of earth and stone piece jam, still has the difficult abluent problem of drill bit inner wall impurity. Disclosure of Invention The invention aims to overcome the defects in the prior art, and provides a five-wing seven-tooth drill bit which can effectively clean the inner wall of the drill bit. The technical scheme adopted for solving the technical problems is as follows: A five-wing seven-tooth drill bit comprises a replaceable drill bit and a connector, wherein the drill bit is in threaded connection with the connector, a rotating mechanism is arranged in the connector and comprises a threaded seat located at the center of the connector, the threaded seat is connected with the inner wall of the connector through a horizontal connecting rod I, a vertical threaded rod is connected with the threaded seat in a threaded mode, a ball is fixed to the top of the threaded rod, the ball is embedded into a movable block, a movable rod is fixedly connected to the upper surface of the movable block, the movable rod is hinged to one end of a vertical rotary disc, the other end of the rotary disc is fixedly connected with a horizontal rotary rod, the horizontal rotary rod penetrates through the inner wall of the connector and is sealed at a joint, the rotary disc is driven to rotate in the vertical direction through rotating the horizontal rotary rod, a support is fixed to the bottom of the threaded rod, and an arc plate for wiping the inner wall of the connector is arranged on the support. The rotary horizontal rod drives the rotary table to rotate in the vertical direction, so that the top of the movable rod moves circularly around the joint of the rotary table and the horizontal rotary rod, and meanwhile, the movable rod moves circularly, as the ball body is embedded into the movable block and can rotate randomly in the movable block, the threaded rod can move up and down in the vertical direction, under the action of the threaded seat, the threaded rod can move up and down and realize self-transmission, thus realizing self-transmission when the arc plate moves up and down, expanding the wiping range of the inner wall of the drill bit and improving the wiping effect. Furthermore, one end of the drill bit is provided with an external thread, the end face of the other end of the drill bit is provided with a water spraying hole, one end of the connector is provided with an internal thread, and the drill bit is in threaded connection with the connector. Further, the connector is connected with the drill bit through one-piece connection, is equipped with the clamp between cylinder section and the drill bit, and the internal diameter of clamp is the cascaded, and one end card is on the external screw thread of drill bit, and the other end card is in on the cylinder section, through bolted connection, make the connection between drill bit and the connector more firm between clamp and the cylinder section. Furthermore, the water spraying holes are provided with protective nets, so that earth and stone chips are prevented from blocking the water spraying holes. Further, the support is a star-shaped support, and a cleaning part for cleaning the inner wall of the bottom of the drill bit is arranged at the bottom of the star-shaped support. Further, the arc plate is connected with the star-shaped bracket through a horizontal connecting rod III. Further, the