Core drilling tool

Abstract

The utility model discloses a coring drilling tool, which relates to the technical field of mines and comprises a drilling mechanism, a fixing mechanism is arranged on the outer wall of the drilling mechanism, and a lengthening mechanism is arranged at one end of the drilling mechanism. The drilling mechanism comprises a coring pipe, drilling teeth are fixedly connected to one end of the coring pipe, a spring pipe is fixedly connected to the end, away from the drilling teeth, of the coring pipe, and a threaded groove is fixedly connected to the outer wall of the coring pipe. The coring pipe, the drilling teeth, the threaded groove, the cleaning pipe and the scraping block are matched, the rotating machine is started to drive the coring pipe to rotate, the drilling teeth make contact and friction with rock, then cold water is injected into the coring drilling tool, the coring efficiency is improved while cooling is carried out, the coring pipe enters the rock, rock debris and silt are generated, and the rock debris and the silt are removed. The spiral shape of the threaded groove is beneficial for discharging rock debris outside the coring pipe outwards, the scraping block scrapes the rock debris inside the coring pipe into the cleaning pipe, and meanwhile sewage can be discharged through the drainage hole.

Description

Technical Field

[0001] The utility model relates to the technical field of mines, and particularly relates to a core drill tool. Background Art

[0002] A core drill tool, also known as a core bit, is a special drill tool used to accommodate and protect the core during drilling in oil drilling and geological exploration. Core drill tools are widely used in fields such as oil drilling, geological exploration, and mineral resource development. The core samples obtained through core drill tools are of great significance for analyzing formation structures, lithological characteristics, oil and gas reservoir distributions, etc.

[0003] Publication No. CN212931981U discloses a core drill tool, which includes a drill bit, a plurality of central rods, an inner rod connecting rod, and an auxiliary structure. The drill bit is used to break the ground or take soil, and the drill bit is detachably connected to one of the bottoms of the plurality of central rods. Each central rod is arranged as a hollow structure, and a core tube and at least one inner rod are arranged in the interior of the plurality of central rods from bottom to top. The core tube is arranged as a hollow structure.

[0004] In order to solve the problem that the sampling depth cannot be adjusted, the prior art is to lengthen the central rod in a detachable manner, but there will still be a situation where cuttings also enter the sampling tube, which will lead to the problem of reducing the core-taking efficiency. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a core drill tool to solve the problems put forward in the above background art.

[0006] To solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A core drill tool includes a drilling mechanism, a fixing mechanism is arranged on the outer wall of the drilling mechanism, and an extension mechanism is arranged at one end of the drilling mechanism.

[0008] The drilling mechanism includes a core tube, one end of the core tube is fixedly connected with a drill tooth, one end of the core tube far away from the drill tooth is fixedly connected with a spring tube, and a thread groove is fixedly connected to the outer wall of the core tube.

[0009] A further improvement of the technical solution of the utility model is that a cleaning tube is slidably connected to the inner wall of the core tube, one end of the cleaning tube is fixedly connected with a scraping block, and a spring is fixedly connected to the end of the cleaning tube far away from the scraping block.

[0010] A further improvement of the technical solution of the utility model is that the end of the spring far away from the cleaning tube is fixedly connected with a fixing ring, the fixing ring is fixedly connected with the spring tube, and one end of the spring tube far away from the core tube is fixedly connected with a fixing block one.

[0011] A further improvement of the technical solution of the present utility model lies in that: the lengthening mechanism includes a lengthening pipe, the lengthening pipe is inserted into the outer wall of the first fixing block, a fixing groove is opened at one end of the lengthening pipe, and the inner wall of the fixing groove is slidably connected to the first fixing block.

[0012] A further improvement of the technical solution of the present utility model lies in that: drainage holes are opened on both sides of the lengthening pipe, and a second fixing block is fixedly connected to one end of the lengthening pipe away from the fixing groove.

[0013] A further improvement of the technical solution of the present utility model lies in that: a fixing screw is threadedly connected to the inner wall of the second fixing block, the fixing screw is threadedly connected to the lengthening pipe, and the fixing screw is threadedly connected to the inner wall of the first fixing block.

[0014] A further improvement of the technical solution of the present utility model lies in that: the fixing mechanism includes a fixing member, the fixing member is slidably connected to the outer wall of the lengthening pipe, and nails are slidably connected to the four corners of the fixing member.

[0015] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is as follows:

[0016] 1. The present utility model provides a core drill. Through the cooperation of the core tube, drill teeth, spring tube, thread groove, cleaning tube, scraping block, spring and fixing ring, when starting the rotating machine, the lengthening pipe is driven to rotate, the lengthening pipe drives the spring tube to rotate, the spring tube drives the core tube and the fixing ring to rotate, the core tube drives the drill teeth and the thread groove to rotate, and the fixing ring drives the spring, cleaning tube and scraping block to rotate. The drill teeth contact and rub against the rock, and then cold water is injected into the interiors of the core tube, spring tube and lengthening pipe to cool down and improve the core-taking efficiency at the same time. The core tube enters the rock, generating rock debris and sediment. The spiral shape of the thread groove helps to discharge the rock debris outside the core tube. The scraping block scrapes the rock debris inside the core tube into the cleaning tube, and at the same time, the sewage can be discharged through the drainage holes. The spring is compressed and contracted to keep the core-taking process smooth. After the core-taking is completed, after taking out the core tube, the spring loses the force to push the cleaning tube, and extrudes the core outwards, reducing the manpower required for core-taking and assisting in core-taking.

[0017] 2. The present utility model provides a core drill. Through the cooperation of the lengthening pipe, drainage holes, fixing groove, fixing screw, second fixing block and first fixing block, the operator determines the core-taking position through surveying, places the core-taking machine in a suitable position, controls the number of lengthening mechanisms according to the required length, inserts the second fixing block into the fixing groove, and uses the fixing screw to perform a threading movement with the lengthening pipe and the second fixing block to fix, connecting the lengthening mechanisms. Then insert the first fixing block into the fixing groove, and use the fixing screw to perform a threading movement with the lengthening pipe and the first fixing block to fix, connecting and fixing the drilling mechanism and the lengthening mechanism. This core drill adopts a detachable method, occupies a small space and is convenient for storage, has a fast installation speed, and avoids falling off and breaking during construction.

[0018] 3. The present utility model provides a core drilling tool. By the cooperation of a fixing member and a plug, the plug is inserted and fixed around the core-taking position, and the drilling mechanism and the lengthening mechanism are passed through the fixing member to ensure that the drilling tool will not deviate from the core-taking position during use, thereby ensuring accurate core-taking. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0020] Figure 2 is a structural schematic diagram of the drilling mechanism of the present utility model;

[0021] Figure 3 is a structural schematic diagram of the fixing mechanism of the present utility model;

[0022] Figure 4 is a structural schematic diagram of the lengthening mechanism of the present utility model.

[0023] In the figure: 1. Drilling mechanism; 11. Core tube; 12. Drill teeth; 13. Spring tube; 14. Thread groove; 15. Cleaning tube; 16. Scraping block; 17. Spring; 18. Fixed ring; 19. First fixing block; 2. Fixing mechanism; 21. Fixing member; 22. Plug; 3. Lengthening mechanism; 31. Lengthening tube; 32. Drainage hole; 33. Fixed groove; 34. Fixed screw; 35. Second fixing block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further describes the present utility model in detail with reference to the embodiments:

[0025] Embodiment 1

[0026] As Figures 1 - 4 shown, the present utility model provides a core drilling tool, including a drilling mechanism 1. A fixing mechanism 2 is arranged on the outer wall of the drilling mechanism 1, and a lengthening mechanism 3 is arranged at one end of the drilling mechanism 1; the drilling mechanism 1 includes a core tube 11. One end of the core tube 11 is fixedly connected with drill teeth 12, one end of the core tube 11 away from the drill teeth 12 is fixedly connected with a spring tube 13, and a thread groove 14 is fixedly connected to the outer wall of the core tube 11. A cleaning tube 15 is slidably connected to the inner wall of the core tube 11. One end of the cleaning tube 15 is fixedly connected with a scraping block 16, one end of the cleaning tube 15 away from the scraping block 16 is fixedly connected with a spring 17, one end of the spring 17 away from the cleaning tube 15 is fixedly connected with a fixed ring 18, the fixed ring 18 is fixedly connected with the spring tube 13, and one end of the spring tube 13 away from the core tube 11 is fixedly connected with a first fixing block 19.

[0027] In this embodiment, the external matching rotating machine is started to drive the extension pipe 31 to rotate. The extension pipe 31 drives the spring pipe 13 to rotate. The spring pipe 13 drives the core barrel 11 and the fixing ring 18 to rotate. The core barrel 11 drives the drill teeth 12 and the thread groove 14 to rotate. The fixing ring 18 drives the spring 17, the cleaning pipe 15, and the scraping block 16 to rotate. The drill teeth 12 contact and rub against the rock. Then, cold water is injected into the interiors of the core barrel 11, the spring pipe 13, and the extension pipe 31 to cool down and improve the core-taking efficiency at the same time. The core barrel 11 enters the interior of the rock, generating rock debris and sediment. The spiral shape of the thread groove 14 helps to discharge the rock debris outside the core barrel 11. The scraping block 16 scrapes the rock debris inside the core barrel 11 into the cleaning pipe 15. At the same time, the sewage can be discharged through the drain holes 32. The spring 17 is compressed and contracted to ensure the smooth progress of the core-taking process. After the core-taking is completed, after the core barrel 11 is taken out, the spring 17 loses the force to push the cleaning pipe 15, and the core is extruded outwards, reducing the manual assistance required for core-taking.

[0028] Embodiment 2

[0029] As Figures 1 - 4 shown, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, the lengthening mechanism 3 includes an extension pipe 31. The extension pipe 31 is inserted into the outer wall of the first fixing block 19. One end of the extension pipe 31 is provided with a fixing groove 33. The inner wall of the fixing groove 33 is slidably connected to the first fixing block 19. Drain holes 32 are provided on both sides of the extension pipe 31. One end of the extension pipe 31 away from the fixing groove 33 is fixedly connected to a second fixing block 35. The inner wall of the second fixing block 35 is threadedly connected to a fixing screw 34. The fixing screw 34 is threadedly connected to the extension pipe 31 and the inner wall of the first fixing block 19.

[0030] In this embodiment, the operator determines the core-taking position through surveying, places the core-taking machine in a suitable position, controls the number of the lengthening mechanisms 3 according to the required length. By inserting the second fixing block 35 into the fixing groove 33 and using the fixing screw 34 to perform a threaded movement with the extension pipe 31 and the second fixing block 35 to fix, the lengthening mechanisms 3 are connected. Then, the first fixing block 19 is inserted into the fixing groove 33, and the fixing screw 34 is used to perform a threaded movement with the extension pipe 31 and the first fixing block 19 to fix, connecting and fixing the drilling mechanism 1 and the lengthening mechanism 3. This core drill adopts a detachable method, occupies little space and is convenient for storage, has a fast installation speed, and avoids falling off and breaking during construction.

[0031] Embodiment 3

[0032] As Figures 1 - 4 shown, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, the fixing mechanism 2 includes a fixing member 21. The fixing member 21 is slidably connected to the outer wall of the extension pipe 31. Four corners of the fixing member 21 are slidably connected with plug pins 22.

[0033] In this embodiment, the plug 22 is inserted and fixed around the coring position, and the drilling mechanism 1 and the lengthening mechanism 3 are passed through the fixing member 21 to ensure that the drill tool will not deviate from the coring position during use, thus ensuring accurate coring.

[0034] Next, the working principle of this coring drill tool will be specifically described.

[0035] As Figures 1 - 4 shown, the operator determines the coring position through surveying, places the coring machine at a suitable position, controls the number of the lengthening mechanisms 3 according to the required length, inserts the second fixing block 35 into the fixing groove 33, and uses the fixing screw 34 to perform a threaded movement with the lengthening pipe 31 and the second fixing block 35 to fix them, thereby connecting the lengthening mechanism 3. Then, the first fixing block 19 is inserted into the fixing groove 33, and the fixing screw 34 is used to perform a threaded movement with the lengthening pipe 31 and the first fixing block 19 to fix them, thereby connecting and fixing the drilling mechanism 1 and the lengthening mechanism 3. The lengthening pipe 31 is installed on the rotating machine, the plug 22 is inserted and fixed around the coring position, and the drilling mechanism 1 and the lengthening mechanism 3 are passed through the fixing member 21 to ensure that the drill tool will not deviate from the coring position during use. Start the rotating machine to drive the lengthening pipe 31 to rotate. The lengthening pipe 31 drives the spring pipe 13 to rotate. The spring pipe 13 drives the coring pipe 11 and the fixing ring 18 to rotate. The coring pipe 11 drives the drill teeth 12 and the thread groove 14 to rotate. The fixing ring 18 drives the spring 17, the cleaning pipe 15, and the scraping block 16 to rotate. The drill teeth 12 contact and rub against the rock. Then, cold water is injected into the interiors of the coring pipe 11, the spring pipe 13, and the lengthening pipe 31 to cool down and improve the coring efficiency at the same time. The coring pipe 11 enters the rock interior, generating rock debris and sediment. The spiral shape of the thread groove 14 helps to discharge the rock debris outside the coring pipe 11. The scraping block 16 scrapes the rock debris inside the coring pipe 11 into the cleaning pipe 15. At the same time, the sewage can be discharged through the drain hole 32. The spring 17 is compressed and contracted to keep the coring process running smoothly. After coring is completed, after the coring pipe 11 is taken out, the spring 17 loses the force to push the cleaning pipe 15, and extrudes the core outwards, reducing the manual labor required for coring.

[0036] The above has generally described the present invention in detail. However, based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, the modifications or improvements made without departing from the spirit of the present invention are all within the protection scope of the present invention.

Claims

1. A core drill, comprising a drilling mechanism (1), characterized in that: A fixing mechanism (2) is arranged on the outer wall of the drilling mechanism (1), and an extension mechanism (3) is arranged at one end of the drilling mechanism (1); The drilling mechanism (1) includes a core barrel (11), a drill tooth (12) is fixedly connected to one end of the core barrel (11), a spring tube (13) is fixedly connected to the end of the core barrel (11) far from the drill tooth (12), and a thread groove (14) is fixedly connected to the outer wall of the core barrel (11).

2. The core drill according to claim 1, characterized in that: A cleaning tube (15) is slidably connected to the inner wall of the core barrel (11), a scraping block (16) is fixedly connected to one end of the cleaning tube (15), and a spring (17) is fixedly connected to the end of the cleaning tube (15) far from the scraping block (16).

3. The core drill according to claim 2, characterized in that: One end of the spring (17) far from the cleaning tube (15) is fixedly connected to a fixing ring (18), the fixing ring (18) is fixedly connected to the spring tube (13), and a first fixing block (19) is fixedly connected to the end of the spring tube (13) far from the core barrel (11).

4. A core drill according to claim 3, characterized in that: The extension mechanism (3) includes an extension tube (31), the extension tube (31) is inserted into the outer wall of the first fixing block (19), a fixing groove (33) is opened at one end of the extension tube (31), and the inner wall of the fixing groove (33) is slidably connected to the first fixing block (19).

5. A core drill according to claim 4, characterized in that: Drainage holes (32) are opened on both sides of the extension tube (31), and a second fixing block (35) is fixedly connected to the end of the extension tube (31) far from the fixing groove (33).

6. A core drill according to claim 5, characterized in that: A fixing screw (34) is threadedly connected to the inner wall of the second fixing block (35), the fixing screw (34) is threadedly connected to the extension tube (31), and the fixing screw (34) is threadedly connected to the inner wall of the first fixing block (19).

7. A core drill according to claim 4, characterized in that: The fixing mechanism (2) includes a fixing member (21), the fixing member (21) is slidably connected to the outer wall of the extension tube (31), and insertion pins (22) are slidably connected to the four corners of the fixing member (21).

Images