five-wing seven-toothed drill bit

Abstract

This invention belongs to the field of drill bit technology, specifically relating to a five-wing, seven-tooth drill bit, including a replaceable drill bit and a connector, with the drill bit and connector threadedly connected. The connector contains a rotating mechanism, which includes a threaded seat located at the center of the connector. The threaded seat is connected to the inner wall of the connector via a horizontal connecting rod. A vertical threaded rod is threaded into the threaded seat, and a ball is fixed to the top of the threaded rod, embedded in a movable block. A movable rod is fixedly connected to the upper surface of the movable block, hinged to one end of a vertical turntable, and the other end of the turntable is fixedly connected to a horizontal rotating rod. The horizontal rotating rod penetrates the inner wall of the connector and the connection is sealed. A bracket is fixed to the bottom of the threaded rod, and an arc-shaped plate for wiping the inner wall of the connector is mounted on the bracket. This invention incorporates a rotating mechanism within the connector, which simultaneously enables the arc-shaped plate to move up and down and rotate, improving the cleaning effect of the arc-shaped plate on the inner wall of the drill bit.

Description

Technical Field

[0001] This invention belongs to the field of drill bit technology, and specifically relates to a five-wing, seven-tooth drill bit. Background Technology

[0002] Drill bits are crucial tools for breaking rocks during drilling. To facilitate quick replacement of worn or broken drill bits, Chinese patent CN110607992A proposes a five-wing, seven-tooth drill bit. This drill bit is replaceable and mounted on the drill rod via a connecting device. It includes five wing teeth arranged in a circumferential array. Each wing tooth has a main drill tooth located at the bottom of the drill bit, with its drilling depth portion fixed directly below the drill bit. A support block is fixed to the rear side of the main drill tooth's cutting portion, which is suspended along the outer edge of the drill bit's bottom. A support rotor is fixed to the rear side of the cutting portion and fixed to the side of the drill bit. Two auxiliary drill teeth are also located at the bottom of the drill bit. A water pipe is installed inside the drill bit, and a water jet hole is located at the bottom of the drill bit, connected to the water pipe. The support block and support rotor prevent the main drill tooth from breaking when encountering hard rock. The aforementioned patent includes a protective net inside the water spray hole to prevent soil and rock debris from clogging it, but the problem of impurities on the inner wall of the drill bit still exists. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and to propose a five-wing, seven-tooth drill bit that can effectively clean the inner wall of the drill bit.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] A five-wing, seven-tooth drill bit includes a replaceable drill bit and a connector, with the drill bit and connector threadedly connected. The connector contains a rotating mechanism, which includes a threaded seat located at the center of the connector. The threaded seat is connected to the inner wall of the connector via a horizontal connecting rod. A vertical threaded rod is threaded into the threaded seat, and a ball is fixed to the top of the threaded rod. The ball is embedded in a movable block, and 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 turntable, and the other end of the turntable is fixedly connected to a horizontal rotating rod. The horizontal rotating rod penetrates the inner wall of the connector and the connection is sealed. Rotating the horizontal rotating rod drives the turntable to rotate vertically. A bracket is fixed to the bottom of the threaded rod, and an arc-shaped plate for wiping the inner wall of the connector is provided on the bracket. Rotating the horizontal rotating rod causes the turntable to rotate vertically, causing the top of the movable rod to make a circular motion around the connection between the turntable and the horizontal rotating rod. While the movable rod is making a circular motion, the ball can rotate freely within the movable block because it is embedded in the block. This allows the threaded rod to move up and down vertically. Under the action of the threaded seat, the threaded rod rotates on its own while moving up and down, thus enabling the arc plate to move up and down while rotating on its own. This expands the wiping range of the drill bit's inner wall and improves the wiping effect.

[0006] Furthermore, one end of the drill bit is provided with an external thread, and the other end face is provided with a water spray hole; one end of the connector is provided with an internal thread, and the drill bit is threadedly connected to the connector.

[0007] Furthermore, the connector is integrally connected to a cylindrical section at one end of the drill bit. A clamp is provided between the cylindrical section and the drill bit. The inner diameter of the clamp is stepped. One end is clamped on the external thread of the drill bit, and the other end is clamped on the cylindrical section. The clamp and the cylindrical section are connected by bolts, making the connection between the drill bit and the connector more secure.

[0008] Furthermore, a protective net is installed at the water spray hole to prevent soil and rock debris from clogging the water spray hole.

[0009] Furthermore, the bracket is a star-shaped bracket, and the bottom of the star-shaped bracket is provided with a cleaning part for cleaning the inner wall of the bottom of the drill bit.

[0010] Furthermore, the arc-shaped plate is connected to the star-shaped bracket via a horizontal connecting rod.

[0011] Furthermore, the horizontal rotating rod is connected to the inner wall of the connector head through the second horizontal connecting rod, and the horizontal rotating rod can rotate relative to the second horizontal connecting rod, which provides support.

[0012] Furthermore, the drill bit is arranged with five wing teeth in a circumferential array, the wing teeth including a main drill tooth and two auxiliary drill teeth located at the bottom end of the drill bit.

[0013] Furthermore, the auxiliary drill teeth are wedge-shaped, the two auxiliary drill teeth are arranged circumferentially, and the rotation direction of the auxiliary drill teeth is the same as that of the main drill teeth.

[0014] Furthermore, both the main drill teeth and the auxiliary drill teeth are made of high-speed steel or tungsten steel.

[0015] Technical effects of the present invention:

[0016] Compared with existing technologies, the present invention provides a five-wing, seven-tooth drill bit that connects to the drill rod via a connector, facilitating disassembly and replacement. A rotating mechanism is installed within the connector, enabling simultaneous vertical movement and rotation of the arc-shaped plate, thus improving the cleaning effect of the arc-shaped plate on the inner wall of the drill bit. In addition to cleaning the inner wall of the drill bit, the present invention also allows for a certain degree of wiping of the bottom inner wall of the drill bit via a cleaning section on the support bracket. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the five-wing, seven-tooth drill bit structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the rotating mechanism structure of the present invention;

[0019] Figure 3 This is a top view of the bracket and arc-shaped plate of the present invention;

[0020] Figure 4 This is a schematic diagram of the connector and clamp structure of the present invention;

[0021] Figure 5 This is a schematic diagram of the rotating mechanism structure according to another embodiment of the present invention.

[0022] In the diagram, 1. Drill bit; 2. Connector; 3. Horizontal connecting rod II; 4. Cylindrical section; 5. Clamp; 6. Bolt; 7. Threaded seat; 8. Horizontal connecting rod I; 9. Threaded rod; 10. Ball; 11. Movable block; 12. Movable rod; 13. Turntable; 14. Horizontal rotating rod; 15. Support; 16. Cleaning section; 17. Water spray hole; 18. Arc plate; 19. Horizontal connecting rod III; 20. Wing tooth; 21. Main drill tooth; 22. Secondary drill tooth. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0024] Example 1:

[0025] like Figure 1As shown, this embodiment relates to a five-wing, seven-tooth drill bit, including a replaceable drill bit 1 and a connector 2. One end of the drill bit 1 has an external thread, and the other end face has a water spray hole 17. One end of the connector 2 has an internal thread, and the drill bit 1 is threadedly connected to the connector 2. Figure 4 As shown, the end of the connector 2 that connects to the drill bit 1 is integrally connected to a cylindrical section 4. A clamp 5 is provided between the cylindrical section 4 and the drill bit 1. The inner diameter of the clamp 5 is stepped. One end is clamped on the external thread of the drill bit 1, and the other end is clamped on the cylindrical section 4. The clamp 5 and the cylindrical section 4 are connected by bolts 6, which strengthens the firmness between the drill bit 1 and the connector 2.

[0026] like Figure 2 As shown, a rotating mechanism is provided inside the connector 2. The rotating mechanism includes a threaded seat 7 located at the center of the connector 2. The threaded seat 7 is connected to the inner wall of the connector 2 through a horizontal connecting rod 8. A vertical threaded rod 9 is threadedly connected to the threaded seat 7. A ball 10 is fixed at the top of the threaded rod 9. The ball 10 is embedded in the movable block 11 and can rotate arbitrarily within the movable block 11. A movable rod 12 is fixedly connected to the upper surface of the movable block 11. The movable rod 12 is hinged to one end of a vertical turntable 13. The other end of the turntable 13 is fixedly connected to a horizontal rotating rod 14. The horizontal rotating rod 14 penetrates the inner wall of the connector 2 and the connection is sealed. The horizontal rotating rod 14 is supported by a horizontal connecting rod 3 and can rotate relative to the horizontal connecting rod 3. The turntable 13 is rotated vertically by rotating the horizontal rotating rod 14, causing the top of the movable rod 12 to rotate around the connection between the turntable 13 and the horizontal rotating rod 14. A bracket 15 is fixed to the bottom of the threaded rod 9, and an arc-shaped plate 18 for wiping the inner wall of the connector 2 is provided on the bracket 15. Specifically, the arc-shaped plate 18 is connected to the bracket 15 via a horizontal connecting rod 19. In this embodiment, two arc-shaped plates 18 are provided, such as... Figure 3 As shown, they are arranged oppositely on both sides of the bracket 15.

[0027] A protective net (not shown in the figure) is installed at the water spray hole 17 to prevent soil and rock debris from clogging the water spray hole 17. The bracket 15 is a star-shaped bracket, such as... Figure 3 As shown, the bottom of the star-shaped support is provided with a cleaning section 16 for cleaning the inner wall of the bottom of the drill bit 1. Specifically, as a feasible implementation, such as Figure 1 As shown, an independent cleaning section 16 is provided at each end of the star-shaped support. As another possible implementation, such as... Figure 5As shown, a circular cleaning section 16 is provided below the star-shaped bracket, and several through holes are provided on the circular cleaning section 16. During operation, as the threaded rod 9 drives the star-shaped bracket and the cleaning section 16 to move up and down and rotate, it will wipe the inner wall of the bottom of the drill bit 1 to a certain extent when it comes into contact with it. When the cleaning section 16 moves to the protective net, it can wipe and clean it.

[0028] like Figure 1 As shown, the drill bit 1 has five wing teeth 20 arranged in a circumferential array. Each wing tooth 20 includes a main drill tooth 21 and two auxiliary drill teeth 22 located at the bottom of the drill bit 1. The auxiliary drill teeth 22 are wedge-shaped and arranged circumferentially. The rotational direction of the auxiliary drill teeth 22 is the same as that of the main drill teeth 21. Both the main drill teeth 21 and the auxiliary drill teeth 22 are made of high-speed steel or tungsten steel. To enable the main drill teeth to perform the primary drilling and cutting function, and the auxiliary drill teeth to assist in drilling and cutting the middle section, the height of the main drill teeth is greater than the height of the auxiliary drill teeth.

[0029] Working Principle: In use, rotating the horizontal rotating rod 14 causes the turntable 13 to rotate vertically, resulting in the top of the movable rod 12 making circular motion around the connection between the turntable 13 and the horizontal rotating rod 14. Simultaneously, the sphere 10, embedded in the movable block 11, can rotate freely within it, allowing the threaded rod 9 to move vertically up and down. Under the action of the threaded seat 7, the threaded rod 9 rotates while moving up and down, thus enabling the arc-shaped plate 18 to move up and down while also rotating, expanding the wiping range of the drill bit 1's inner wall and improving the wiping effect. During the up-and-down movement and rotation of the threaded rod 9, the star-shaped bracket and cleaning part 16 are wiped to a certain extent when in contact with the bottom inner wall of the drill bit 1. When the cleaning part 16 moves to the protective mesh, it can wipe and clean it.

[0030] The above-described specific embodiments are merely specific examples of the present invention. The patent protection scope of the present invention includes, but is not limited to, the above-described specific embodiments. Any appropriate changes or modifications made by a person skilled in the art that conform to the claims of the present invention should fall within the patent protection scope of the present invention.

Claims

1. A five-wing, seven-tooth drill bit, comprising a replaceable drill bit (1) and a connector (2), characterized in that: The drill bit (1) is threadedly connected to the connector (2); a rotating mechanism is provided inside the connector (2), the rotating mechanism including a threaded seat (7) located at the center of the connector (2), the threaded seat (7) is connected to the inner wall of the connector (2) through a horizontal connecting rod (8), a vertical threaded rod (9) is threadedly connected inside the threaded seat (7), a ball (10) is fixed at the top of the threaded rod (9), the ball (10) is embedded in the movable block (11), and a movable block (11) is fixedly connected to the upper surface of the movable block (11). The movable rod (12) is hinged to one end of the vertical turntable (13), and the other end of the turntable (13) is fixedly connected to the horizontal rotating rod (14). The horizontal rotating rod (14) passes through the inner wall of the connector (2) and is sealed at the connection. The turntable (13) is rotated in the vertical direction by rotating the horizontal rotating 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 provided on the bracket (15). The connector (2) is integrally connected to the drill bit (1) with a cylindrical section (4). A clamp (5) is provided between the cylindrical section (4) and the drill bit (1). The inner diameter of the clamp (5) is stepped. One end is clamped on the external thread of the drill bit (1), and the other end is clamped on the cylindrical section (4). The clamp (5) and the cylindrical section (4) are connected by bolts (6). The bracket (15) is a star-shaped bracket, and a cleaning part (16) for cleaning the inner wall of the bottom of the drill bit (1) is provided at the bottom of the star-shaped bracket. The arc-shaped plate (18) is connected to the star-shaped bracket via horizontal connecting rod three (19); The horizontal rotating rod (14) is connected to the inner wall of the connector (2) through the second horizontal connecting rod (3), and the horizontal rotating rod (14) can rotate relative to the second horizontal connecting rod (3).

2. The five-wing, seven-tooth drill bit according to claim 1, characterized in that: The drill bit (1) has an external thread at one end and a water spray hole (17) at the other end face; the connector (2) has an internal thread at one end and the drill bit (1) is threaded onto the connector (2).

3. The five-wing, seven-tooth drill bit according to claim 2, characterized in that: A protective net is installed at the water spray hole (17).

4. The five-wing, seven-tooth drill bit according to any one of claims 1-3, characterized in that: The drill bit (1) is arranged with five wing teeth (20) in a circumferential array. The wing teeth (20) include a main drill tooth (21) and two auxiliary drill teeth (22) located at the bottom of the drill bit (1).

5. The five-wing, seven-tooth drill bit according to claim 4, characterized in that: The auxiliary drill teeth (22) are wedge-shaped, and the two auxiliary drill teeth (22) are arranged circumferentially. The rotation direction of the auxiliary drill teeth (22) is the same as that of the main drill teeth (21).

6. The five-wing, seven-tooth drill bit according to claim 4, characterized in that: Both the main drill bit (21) and the auxiliary drill bit (22) are made of high-speed steel or tungsten steel.

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