Double-layer drill rod structure of drill rod

Abstract

The utility model discloses a double-layer drill rod structure of a drill rod, which relates to the technical field of drill rods and comprises a first drill rod, a female end connector is arranged at the top end of the first drill rod, a male end connector is arranged at the bottom end of the first drill rod, a distance adjusting mechanism is arranged in the first drill rod, and the distance adjusting mechanism is used for adjusting the unfolding distance of a second drill rod. A limiting mechanism is arranged on the outer side of the second drill rod, the friction force of the second drill rod is increased through internal parts of the first drill rod, and meanwhile the outer end of the second drill rod is prevented from directly shaking and rubbing with the inner end of the first drill rod. An operator can pull the limiting ring, adjust the position of the limiting ring and position and limit the outer side of the second drill rod, the overall length of the double-layer grouting drill rod can be freely adjusted according to needs, and therefore use flexibility is improved, friction force of the drill rod in the displacement process is increased through the sealing ring pad, and the service life of the drill rod is prolonged. And direct contact friction between the first drill rod and the second drill rod is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of drill rods, in particular to a double-layer drill rod structure. Background Art

[0002] The existing small diameter drill pipe is made of a single outer tube, which cannot realize double slurry injection. In order to realize double slurry injection, the drill pipe must be assembled from an inner tube and an outer tube, which results in a larger diameter of the drill pipe and increases the difficulty of drilling.

[0003] Double-layer drill pipe sealing is easy to achieve, but its connecting bolts are prone to fatigue and loosening during drilling, and drill drops often occur; the disassembly of the drill pipe is time-consuming, which seriously affects the drilling efficiency, and during long-term use, the connection between the inner drill pipe and the outer drill pipe is prone to shaking, and the drill pipe and the outer drill pipe are prone to uneven wear, which in turn affects the stability of the drill pipe during rotation. Summary of the invention

[0004] The utility model aims to provide a double-layer drill rod structure for a drill rod, so as to solve the above-mentioned defects caused by the prior art.

[0005] A double-layer drill rod structure includes drill rod one, the top of drill rod one is provided with a female end joint, the bottom of drill rod one is provided with a male end joint, a distance adjusting mechanism is provided inside drill rod one, the distance adjusting mechanism adjusts the expansion distance of drill rod two to meet the efficiency of drilling holes of different lengths, a limiting mechanism is provided on the outside of drill rod two, drill rod one increases the friction of drill rod two through internal components, and at the same time avoids the outer end of drill rod two directly shaking and rubbing with the inner end of drill rod one.

[0006] Preferably, the distance adjustment mechanism includes a fastening hole, a pipe positioning seat, an auxiliary slider, a pipe through-hole and a guide groove, the fastening holes are arranged at equal intervals on one side of drill rod one, a guide groove is opened inside the drill rod one, the outer side of the guide groove is connected to an auxiliary slider, the auxiliary slider is distributed in a ring shape on the outer side of the pipe positioning seat, and a pipe through-hole is opened through the outer side of the pipe positioning seat.

[0007] Preferably, a pipe through hole is formed on the outer side of the pipe positioning seat to connect with the outer side of the drill rod.

[0008] Preferably, the limiting mechanism includes drill rod 2, a sealing ring gasket, a limiting ring and a fastener. The outer side of drill rod 2 is connected through a sealing ring gasket, the outer side of the sealing ring gasket is connected to a limiting ring, the outer side of the limiting ring has fasteners distributed in an annular manner, and the limiting ring is arranged inside drill rod 1.

[0009] Preferably, the drill rod is connected to the limit ring through a guide groove distributed in an annular shape at the inner end.

[0010] Preferably, an inner tooth groove is formed at the top of the female end connector.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. The operator can pull the limit ring to adjust the position of the limit ring, locate and limit the outside of the drill rod 2. The overall length of the double-layer grouting drill rod can be freely adjusted according to needs, thereby improving the flexibility of use. When the pipe positioning seat is displaced, the pipe positioning seat contacts the limit ring to limit the drill rod 2. The sealing ring is used to increase the friction of the drill rod during the displacement process to avoid direct contact and friction between the drill rod 1 and the drill rod 2.

[0013] 2. Positioning and guiding are performed by setting internal tooth grooves of different lengths, which makes it easy to disassemble and replace the sealing ring. The outer side of the drill rod 2 is wrapped and limited by sealing rings of different thicknesses. At the same time, the operator can discharge the liquid in the drill rod 1 through the fastening hole set on one side to avoid liquid accumulation inside the drill rod 1, which causes internal corrosion of the drill rod 1. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the front section structure of the drill rod in the utility model.

[0016] Figure 3 It is a schematic diagram of the front section structure of the pipe positioning seat in the utility model.

[0017] Figure 4 It is a schematic structural diagram of the limiting ring itself in the utility model.

[0018] Figure 5 It is a schematic diagram of the side section structure of the limiting ring in the utility model.

[0019] in:

[0020] 1. Drill rod one; 2. Male end joint; 3. Fastening hole; 4. Female end joint; 5. Drill rod two; 6. Distance adjustment mechanism; 7. Pipe positioning seat; 8. Auxiliary slider; 9. Pipe perforation; 10. Guide groove; 11. Internal tooth groove; 12. Sealing ring; 13. Limiting mechanism; 14. Limiting ring; 15. Fasteners. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figures 1 to 5As shown, a double-layer drill rod structure includes a drill rod 1, a female end joint 4 is provided at the top of the drill rod 1, a male end joint 2 is provided at the bottom of the drill rod 1, a distance adjustment mechanism 6 is provided inside the drill rod 1, and the distance adjustment mechanism 6 adjusts the expansion distance of the drill rod 2 5 to meet the efficiency of drilling holes of different lengths. A limiting mechanism 13 is provided on the outside of the drill rod 2 5. The drill rod 1 increases the friction of the drill rod 2 5 through internal components, and at the same time avoids the outer end of the drill rod 2 5 directly shaking and rubbing with the inner end of the drill rod 1.

[0023] In this embodiment, the distance adjustment mechanism 6 includes a fastening hole 3, a pipe positioning seat 7, an auxiliary slider 8, a pipe through-hole 9 and a guide groove 10. The fastening holes 3 are evenly spaced on one side of the drill rod 1. A guide groove 10 is provided inside the drill rod 1. The outer side of the guide groove 10 is connected to an auxiliary slider 8. The auxiliary slider 8 is annularly distributed on the outer side of the pipe positioning seat 7. A pipe through-hole 9 is provided on the outer side of the pipe positioning seat 7. The outer side of the pipe positioning seat 7 is positioned by the auxiliary slider 8 to prevent the pipe positioning seat 7 from shaking.

[0024] In this embodiment, a pipe through hole 9 is formed on the outer side of the pipe positioning seat 7 and connected to the outer side of the drill rod 2 5 . The drill rod 2 5 is positioned through the pipe through hole 9 to complete the height limiting process of the drill rod 2 5 .

[0025] In this embodiment, the limiting mechanism 13 includes a drill rod 2 5, a sealing ring gasket 12, a limiting ring 14 and a fastener 15. The outer side of the drill rod 2 5 is connected with a sealing ring gasket 12, the outer side of the sealing ring gasket 12 is connected with a limiting ring 14, the outer side of the limiting ring 14 has fasteners 15 distributed in an annular manner, and the limiting ring 14 is arranged inside the drill rod 1.

[0026] In this embodiment, the drill rod 1 is connected to the limit ring 14 through the guide groove 10 distributed in an annular manner at the inner end. The outer side of the limit ring 14 is limited by the guide groove 10 to prevent the drill rod 2 5 from shaking.

[0027] In this embodiment, an inner groove 11 is provided at the top of the female end connector 4 , and the female end connector 4 is connected to the output end of the motor through the inner groove 11 provided inside the female end connector 4 .

[0028] This double-layer drill pipe structure includes the following work contents in practical application:

[0029] Step 1: The operator first connects the limit ring 14 with the sealing ring gasket 12, and then connects the limit ring 14 with the sealing ring gasket 12, and fastens the sealing ring gasket 12 and the limit ring 14 through the fastener 15, and connects the auxiliary slider 8 provided on the outside of the limit ring 14 with the guide groove 10, so that the limit ring 14 is filled into the inside of the drill pipe 1, and connects the pipe positioning seat 7 with the drill pipe 2 5;

[0030] Step 2: When the drill rod 2 5 needs to be unfolded, the drill rod 2 5 slides inside the drill rod 1 1 through the pipe positioning seat 7 arranged at the top, and the auxiliary slider 8 arranged outside the pipe positioning seat 7 is laterally displaced in the guide groove 10 to adjust and control the unfolded length of the drill rod 2 5, and the bolt can be inserted into the fastening hole 3 to lock the pipe positioning seat 7 and the inner end of the drill rod 1 to complete the limit of the drill rod 2 5;

[0031] Step 3: After completing the positioning and guiding of drill rod 2 5, the friction force during the displacement of drill rod 2 5 is increased by sealing ring 12 to prevent drill rod 2 5 from directly wearing against the inside of drill rod 1 during movement. The motor drives drill rod 1 and drill rod 2 5 to rotate, and the drill rod 2 5 is used to perform rotary drilling on the land.

[0032] Therefore, the embodiments disclosed above are only illustrative in all aspects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. The double-layer drill pipe structure is characterized by: The invention comprises a drill rod (1), wherein the top end of the drill rod (1) is provided with a female end joint (4), the bottom end of the drill rod (1) is provided with a male end joint (2), the interior of the drill rod (1) is provided with a distance adjustment mechanism (6), the distance adjustment mechanism (6) is used to adjust the expansion distance of the drill rod (5) to meet the efficiency of drilling holes of different lengths, the outer side of the drill rod (5) is provided with a limiting mechanism (13), the drill rod (1) increases the friction force of the drill rod (5) through internal components, and at the same time avoids the outer end of the drill rod (5) directly shaking and rubbing with the inner end of the drill rod (1).

2. The double-layer drill pipe structure of claim 1, characterized in that: The distance adjustment mechanism (6) comprises a fastening hole (3), a pipe positioning seat (7), an auxiliary slider (8), a pipe through hole (9) and a guide groove (10); the fastening holes (3) are arranged at equal intervals on one side of the drill rod (1); a guide groove (10) is provided inside the drill rod (1); the outer side of the guide groove (10) is connected to an auxiliary slider (8); the auxiliary slider (8) is distributed in an annular shape on the outer side of the pipe positioning seat (7); and the outer side of the pipe positioning seat (7) is provided with a pipe through hole (9) extending through it.

3. The double-layer drill pipe structure of claim 2, characterized in that: The outer side of the pipe positioning seat (7) is penetrated by a pipe through hole (9) which is connected to the outer side of the second drill rod (5).

4. The double-layer drill pipe structure of claim 1, characterized in that: The limiting mechanism (13) comprises a drill rod 2 (5), a sealing ring (12), a limiting ring (14) and a fastener (15); the outer side of the drill rod 2 (5) is connected to a sealing ring (12); the outer side of the sealing ring (12) is connected to a limiting ring (14); the outer side of the limiting ring (14) is provided with fasteners (15) distributed in an annular manner; and the limiting ring (14) is arranged inside the drill rod 1 (1).

5. The double-layer drill pipe structure of claim 4, characterized in that: The drill rod 1 (1) is connected to a limiting ring (14) via a guide groove (10) distributed in an annular pattern at the inner end.

6. The double-layer drill pipe structure of claim 1, characterized in that: An inner tooth groove (11) is formed at the top end of the female end connector (4).

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