Connecting drill rod for rock and soil exploration

Abstract

The utility model discloses a connecting drill rod for rock-soil exploration, which comprises a drill rod body, a transmission column is fixedly arranged at the end part of the drill rod body, the transmission column is inserted into a drill bit body, a connecting column is fixedly arranged at the end part of the drill bit body, a drill bit body is fixedly arranged at the end part of the connecting column, and a crown column is fixedly welded on the surface of the drill bit body. And a cutting seat is fixedly arranged on the outer side of the crown column. According to the connecting drill rod for rock-soil exploration, three sets of limiting plates are inserted into three sets of limiting grooves correspondingly and are fixed through two sets of fixing bolts in a penetrating and threaded connection mode, and by increasing the transmission area between the drill rod body and the drill bit body, it is guaranteed that when the drill rod body rotates, sufficient torque transmission can be conducted on the drill bit body; the joint between the drill bit body and the drill rod body can be tightly fixed and connected, loosening is avoided, and the joint between the drill bit body and the drill rod body cannot be broken off.

Description

Technical Field

[0001] The utility model relates to the field of rock and soil exploration equipment, in particular to a connecting drill rod for rock and soil exploration. Background Art

[0002] The drill pipe used in geological exploration mainly operates in the following ways:

[0003] The drill rod is connected to the drilling rig, which provides rotational power, so that the drill rod drives the drill bit to rotate at high speed; while rotating, downward pressure is applied to allow the drill bit to cut into the underground rock formation; as the drilling progresses, the drill rod is connected section by section, gradually extending the drilling depth;

[0004] During the drilling process, the drill pipe plays the role of transmitting torque and axial force, transferring the power and pressure of the drilling rig to the drill bit to break the rock and form a borehole; at the same time, a channel is formed inside the drill pipe for circulating flushing fluids such as mud; the flushing fluid is transported to the drill bit through the drill pipe to cool the drill bit and carry the cuttings back to the ground;

[0005] The connection between the drill pipe and the drill bit is prone to breakage during exploration. The reason is that the drill pipe and the drill bit are connected by threads. If the threads do not fit well or are not tightened properly, the connection part will easily loosen or become defective when subjected to force, which will cause it to break. Utility Model Content

[0006] The utility model aims to provide a connecting drill rod for rock and soil exploration to solve the defects mentioned in the above background technology.

[0007] To achieve the above-mentioned purpose, a connecting drill rod for geotechnical exploration is provided, comprising a drill rod body, a transmission column is fixedly installed at the end of the drill rod body, and the transmission column is inserted into the interior of a drill bit body, and a connecting column is fixedly arranged at the end of the drill bit body, and a drill bit body is fixedly installed at the end of the connecting column, a crown column is welded and fixed on the surface of the drill bit body, and a cutting seat is fixedly arranged on the outer side of the crown column, and two groups of parallel scrapers are fixedly arranged on the surface of the cutting seat.

[0008] Preferably, a transmission groove is provided inside the drill body, and the transmission groove is adapted to the size of the transmission column, and the transmission column is inserted into the transmission groove and is screwed and fixed by two sets of fixing bolts.

[0009] Preferably, the cross-sections of the transmission groove and the transmission column are both regular hexagonal, and the depth of the transmission groove is equal to the length of the transmission column. At the same time, the drill bit body and the drill rod body are positioned and installed through the transmission groove and the transmission column.

[0010] Preferably, three groups of limit grooves are evenly opened on the outside of the drill bit body, and three groups of limit plates are evenly fixed on the outside of the drill rod body, and the limit plates are inserted into the limit grooves, and the cross-sections of the limit plates and the limit grooves are both dovetail structures.

[0011] Preferably, the drill body and the drill body are connected via a connecting column, and the connecting column is a truncated cone structure, and the drill body and the drill body fixed on the surface are concentric circle structures.

[0012] Preferably, the cutting seats are evenly arranged in three groups on the surface of the drill body, and the three groups of drill bodies are centrally symmetrical structures about the drill body. At the same time, the top surface height of the cutting seats is less than the top surface height of the scraper, and the scraper is inclined at 45°.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the three groups of limit plates are respectively inserted into the three groups of limit grooves, and are screwed and fixed by two groups of fixing bolts. By increasing the transmission area between the drill bit body and the drill rod body, it is ensured that when the drill rod body rotates, sufficient torque can be transmitted to the drill bit body, and the connection between the drill bit body and the drill rod body can be tightly fixed and connected without loosening or breaking at the connection between the drill bit body and the drill rod body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front view of the structure of the utility model;

[0015] Figure 2 The utility model structure Figure 1 Bottom view of

[0016] Figure 3 The utility model structure Figure 2 A top view of

[0017] Figure 4 The utility model structure Figure 1 Side view of.

[0018] Numbers in the figure: 1, drill body; 10, transmission groove; 11, connecting column; 12, drill body; 13, limit groove; 14, crown column; 15, cutting seat; 16, scraper; 2, drill rod body; 21, transmission column; 22, limit plate; 23, fixing bolt. DETAILED DESCRIPTION

[0019] See also Figure 1-4The utility model provides a connecting drill rod for geotechnical exploration, including a drill rod body 2, a transmission column 21 is fixedly installed at the end of the drill rod body 2, and the transmission column 21 is inserted into the inside of a drill bit body 1, and a connecting column 11 is fixedly installed at the end of the drill bit body 1, and a drill bit body 12 is fixedly installed at the end of the connecting column 11, a crown column 14 is welded and fixed on the surface of the drill bit body 12, and a cutting seat 15 is fixedly arranged on the outer side of the crown column 14, and two groups of parallel scrapers 16 are fixedly arranged on the surface of the cutting seat 15.

[0020] Working principle: When the drill bit body 1 and the drill rod body 2 are connected, the transmission column 21 is first inserted into the transmission groove 10, and at the same time, the three groups of limit plates 22 are respectively inserted into the three groups of limit grooves 13, and are fixed by two groups of fixing bolts 23. By increasing the transmission area between the drill bit body 1 and the drill rod body 2, it is ensured that when the drill rod body 2 rotates, the drill bit body 1 can be fully torqued. The connection between the drill bit body 1 and the drill rod body 2 can be tightly fixed and connected without loosening or breaking.

[0021] As a preferred embodiment, a transmission groove 10 is opened inside the drill body 1, and the transmission groove 10 is adapted to the size of the transmission column 21. At the same time, the transmission column 21 is inserted into the transmission groove 10 and is screwed and fixed by two sets of fixing bolts 23.

[0022] The cross-sections of the transmission groove 10 and the transmission column 21 are both set in a regular hexagon, and the depth of the transmission groove 10 is equal to the length of the transmission column 21. At the same time, the drill body 1 and the drill rod body 2 are positioned and installed through the transmission groove 10 and the transmission column 21.

[0023] The drill bit body 1 and the drill rod body 2 are positioned and installed through the transmission groove 10 and the transmission column 21. The arrangement of the transmission column 21, the transmission groove 10 and the three sets of limit plates 22 and the limit groove 13 can increase the torque transmission area between the drill bit body 1 and the drill rod body 2, ensure the strength of the connection between the drill bit body 1 and the drill rod body 2, and prevent it from breaking easily.

[0024] As a preferred embodiment, three groups of limit grooves 13 are evenly opened on the outer side of the drill bit body 1, and three groups of limit plates 22 are evenly fixed on the outer side of the drill rod body 2. At the same time, the limit plates 22 are inserted into the inside of the limit grooves 13, and the cross-sections of the limit plates 22 and the limit grooves 13 are both dovetail structures.

[0025] The drill body 1 and the drill body 12 are connected by a connecting column 11, and the connecting column 11 is a truncated cone structure. At the same time, the drill body 12 and the drill body 12 fixed on the surface are concentric circle structures.

[0026] The cutting seats 15 are evenly arranged in three groups on the surface of the drill body 12, and the three groups of drill bodies 12 are centrally symmetrical structures about the drill body 12. At the same time, the top surface height of the cutting seats 15 is less than the top surface height of the scraper 16, and the scraper 16 is inclined at 45 degrees.

[0027] When the drill bit body 12 rotates, the cutting seat 15 and the scraper 16 rotate. Since the top surface height of the cutting seat 15 is less than the top surface height of the scraper 16, the two groups of scrapers 16 first contact the hard rock to cut the rock for exploration work;

[0028] The cutting seat 15 and the scraper 16 rotate and move downward at the same time, so that the cutting seat 15 continuously rotates and drills, overcomes various hard rock layers, and provides a channel for obtaining underground geological information and resources.

Claims

1. A connecting drill rod for geotechnical exploration, comprising a drill rod body (2), characterized in that: A transmission column (21) is fixedly mounted on the end of the drill rod body (2), and the transmission column (21) is plugged into the inside of the drill bit body (1); a connecting column (11) is fixedly mounted on the end of the drill bit body (1), and a drill bit body (12) is fixedly mounted on the end of the connecting column (11); a crown column (14) is welded and fixed on the surface of the drill bit body (12), and a cutting seat (15) is fixedly mounted on the outside of the crown column (14); and two groups of parallel scrapers (16) are fixedly mounted on the surface of the cutting seat (15); three groups of limiting grooves (13) are evenly arranged on the outside of the drill bit body (1), and three groups of limiting plates (22) are evenly fixedly mounted on the outside of the drill rod body (2), and the limiting plates (22) are plugged into the inside of the limiting grooves (13), and the cross-sections of the limiting plates (22) and the limiting grooves (13) are both dovetail structures.

2. A connecting drill rod for geotechnical exploration according to claim 1, characterized in that: A transmission groove (10) is provided inside the drill body (1), and the transmission groove (10) is adapted to the size of the transmission column (21). The transmission column (21) is inserted into the transmission groove (10) and is screwed and fixed by two sets of fixing bolts (23).

3. The connecting drill rod for geotechnical exploration according to claim 2, characterized in that: The cross-sections of the transmission groove (10) and the transmission column (21) are both arranged in a regular hexagonal shape, and the depth of the transmission groove (10) is equal to the length of the transmission column (21). At the same time, the drill bit body (1) and the drill rod body (2) are positioned and installed through the transmission groove (10) and the transmission column (21).

4. The connecting drill rod for geotechnical exploration according to claim 1, characterized in that: The drill body (1) and the drill body (12) are connected via a connecting column (11), and the connecting column (11) is a truncated cone structure. Meanwhile, the drill body (12) and the drill body (12) fixed on the surface are concentric circle structures.

5. The connecting drill rod for geotechnical exploration according to claim 1, characterized in that: The cutting seats (15) are evenly arranged in three groups on the surface of the drill body (12), and the three groups of drill bodies (12) are centrally symmetrical structures with respect to the drill body (12). At the same time, the top surface height of the cutting seats (15) is smaller than the top surface height of the scraper (16), and the scraper (16) is arranged to be inclined at 45 degrees.

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