Deslagging structure of anchor rod drill rod

Abstract

The utility model relates to the technical field of anchor rod drill rods, in particular to a slag discharging structure of an anchor rod drill rod, which comprises a hollow rod, a connecting hose, an air cooler, a through hole and a first groove, through the arrangement of the structure, slag can be effectively output, water can be effectively discharged, and the temperature of a drill bit can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of anchor drill rod technology, and in particular to a slag removal structure for anchor drill rods. Background Technology

[0002] Existing anchor drill rods have the following problems in conglomerate formations: Low slag removal efficiency: The slag particles produced after the conglomerate is broken have a complex gradation, and the surface of traditional smooth drill rods is difficult to effectively transport the slag, leading to slag accumulation at the bottom of the hole, increasing drilling resistance; Poor drainage: Traditional drill rods lack a directional flow structure, resulting in a mud accumulation rate of over 35%; Risk of thermal damage: Conglomerate has high hardness, and the drill bit temperature can reach 250-300℃ during continuous drilling. Traditional drill rods lack auxiliary heat dissipation design, leading to a decrease in the thermal stability of the diamond composite sheet and a reduction in its lifespan. Therefore, there is an urgent need for a slag removal structure for anchor drill rods that can not only effectively remove slag and drain water, but also reduce the temperature of the drill bit. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a slag discharge structure for anchor drill rods, which can not only effectively discharge slag and drain water, but also reduce the temperature of the drill bit.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a slag removal structure for anchor drill rods, comprising:

[0005] The drill rod has a first external thread at one end and a second external thread at the other end. The drill rod is hollow inside. The end of the hollow rod near the second external thread is connected to an external air cooler via a connecting hose. The outer wall of the drill rod has a first groove, and the first groove has a through hole near the first external thread.

[0006] Furthermore, the trapezoidal first groove of the first groove has a first slot at the bottom, a first spring is installed in the first slot, and a first scraper is installed at the other end of the first spring. When the drill bit is working, one end of the first scraper abuts against the hole wall.

[0007] Furthermore, several first scrapers are arranged at equal intervals along the axial direction of the drill rod.

[0008] Furthermore, the first scraper is a triangular scraper, and a second scraper is provided between two adjacent first scrapers. The second scraper is trapezoidal in shape, and a second slot is provided in the first groove. A second spring is provided in the second slot, and the second spring is connected to the second scraper.

[0009] Furthermore, the slag removal structure of the anchor drill rod also includes a connecting cylinder. The outer wall of the connecting cylinder is provided with a second groove that matches the first groove. One end of the connecting cylinder is provided with a first internal thread that matches the second external thread, and the other end of the connecting cylinder is provided with a second internal thread that matches the first external thread. The first internal thread and the second internal thread are connected. During assembly, the first groove and the second groove are connected.

[0010] Furthermore, several first grooves are arranged in a circumferential array along the axial direction of the drill rod.

[0011] The beneficial effects of this utility model are as follows: Compared with the prior art, by setting a hollow rod, connecting hose, air cooler, through hole and first groove, the above structure can effectively output slag and drain water, and also reduce the temperature of the drill bit. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the slag removal structure of an anchor drill rod according to a specific embodiment of the present utility model;

[0013] Figure 2 for Figure 1 Enlarged view of part A;

[0014] Figure 3 This is a front view of the slag removal structure of an anchor drill rod according to a specific embodiment of the present utility model;

[0015] Figure 4 for Figure 3 A-direction cross-section view;

[0016] Figure 5 for Figure 4 Enlarged view of part B;

[0017] Figure 6 This is a diagram showing the connection structure of the drive motor for the slag discharge structure of an anchor drill rod, which is a specific embodiment of this utility model.

[0018] Label Explanation

[0019] 1. Drill rod; 11. First external thread; 12. Second external thread; 13. Hollow rod; 14. Connecting hose; 15. First groove; 151. First slot; 152. First spring; 153. First scraper; 154. Second slot; 155. Second spring; 16. Through hole;

[0020] 2. Second scraper;

[0021] 3. Connecting cylinder; 31. Second groove; 32. First internal thread; 33. Second internal thread. Detailed Implementation

[0022] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0023] Please refer to Figures 1 to 6 A slag removal structure for an anchor drill rod 1, comprising:

[0024] Drill rod 1, one end of drill rod 1 is provided with a first external thread 11, the other end of drill rod 1 is provided with a second external thread 12, the inside of drill rod 1 is a hollow rod 13, the end of hollow rod 13 near the second external thread 12 is connected to an external air cooler through a connecting hose 14, the outer wall of drill rod 1 is provided with a first groove 15, and the first groove 15 near the first external thread 11 is provided with a through hole 16.

[0025] In the above embodiments, the novel diamond composite anchor drill bit is locked with the first external thread 11. The radius of the drill bit is larger than the diameter of the drill rod 1. Then, drilling is performed. During the drilling process, the drill bit rotates at high speed. Through the centrifugal force of the rotation, the soil and debris drilled by the drill bit are discharged outward along the first groove 15. When the soil layer contains water, the water can also be discharged outward through the first groove 15, so that the soil and debris and water can be discharged in a directional manner. Then, by connecting the connecting hose 14 to the air cooler, the air cooler is transmitted to the bottom through the hollow rod 13. This not only dissipates heat from the drill bit, but also cools the drill bit by discharging the air cooler outward from the through hole 16. At the same time, it can also prevent soil and debris from entering the cavity through the through hole 16. Compared with the prior art, by setting the hollow rod 13, connecting hose 14, air cooler, through hole 16 and first groove 15, the above structure can effectively output the soil and drain water, and also reduce the temperature of the drill bit.

[0026] As an optional implementation, the trapezoidal first groove 15 of the first groove 15 has a first slot 151 at the bottom, a first spring 152 is provided in the first slot 151, and a first scraper 153 is provided at the other end of the first spring 152. When the drill bit is working, one end of the first scraper 153 abuts against the hole wall.

[0027] In the above embodiments, the adhering slag on the hole wall can be cleaned during the drilling process to ensure the smoothness of the hole wall. At the same time, the first scraper 153 can be used to prevent the axial displacement of the drill rod 1 by scraping against the hole wall, thereby ensuring the stability of the drilling.

[0028] As an optional implementation, a plurality of first scrapers 153 are arranged at equal intervals along the axial direction of the drill rod 1.

[0029] In the above embodiments, by arranging multiple first scrapers 153 along the axial direction, the soil and debris on the borehole wall can be scraped off more stably.

[0030] As an optional implementation, the first scraper 153 is a triangular scraper, and a second scraper 2 is provided between two adjacent first scrapers 153. The second scraper 2 is a trapezoidal scraper. A second slot 154 is provided in the first groove 15, and a second spring 155 is provided in the second slot 154. The second spring 155 is connected to the second scraper 2.

[0031] In the above embodiments, the tip of the first scraper 153 is inserted into the gap of the slag in the borehole wall and is broken up during the high-speed rotation of the drill bit. The second scraper 2 can continue to scrape the slag broken by the first scraper 153 to ensure that the borehole wall is smooth and to prepare for subsequent grouting.

[0032] As an optional implementation, the slag discharge structure of the anchor drill rod 1 also includes a connecting cylinder 3. The outer wall of the connecting cylinder 3 is provided with a second groove 31 that matches the first groove 15. One end of the connecting cylinder 3 is provided with a first internal thread 32 that matches the second external thread 12, and the other end of the connecting cylinder 3 is provided with a second internal thread 33 that matches the first external thread 11. The first internal thread 32 and the second internal thread 33 are connected. During assembly, the first groove 15 and the second groove 31 are connected.

[0033] In the above embodiments, multiple drill rods 1 can be connected by the connecting cylinder 3, thereby increasing the drilling depth. At the same time, the first groove 15 and the second groove 31 are connected, allowing water and soil residue to continue to be discharged.

[0034] As an alternative implementation, a plurality of first grooves 15 are arranged in a circumferential array along the drill hole.

[0035] In the above implementation method, the discharge of soil and water is accelerated.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A slag removal structure for an anchor drill rod, characterized in that, include: The drill rod has a first external thread at one end and a second external thread at the other end. The drill rod is hollow inside. The end of the hollow rod near the second external thread is connected to an external air cooler via a connecting hose. The outer wall of the drill rod has a first groove, and the first groove has a through hole near the first external thread.

2. The slag removal structure of the anchor drill rod according to claim 1, characterized in that, The first groove is trapezoidal, with a first slot at the bottom. A first spring is installed in the first slot, and a first scraper is installed at the other end of the first spring. When the drill bit is working, one end of the first scraper abuts against the hole wall.

3. The slag removal structure of the anchor drill rod according to claim 1, characterized in that, Several first scrapers are set at equal intervals along the axial direction of the drill rod.

4. The slag removal structure of the anchor drill rod according to claim 3, characterized in that, The first scraper is a triangular scraper, and a second scraper is provided between two adjacent first scrapers. The second scraper is trapezoidal in shape. A second slot is provided in the first groove, and a second spring is provided in the second slot. The second spring is connected to the second scraper.

5. The slag removal structure of the anchor drill rod according to claim 1, characterized in that, The slag removal structure of the anchor drill rod also includes a connecting cylinder. The outer wall of the connecting cylinder is provided with a second groove that matches the first groove. One end of the connecting cylinder is provided with a first internal thread that matches the second external thread, and the other end of the connecting cylinder is provided with a second internal thread that matches the first external thread. The first internal thread and the second internal thread are connected. During assembly, the first groove and the second groove are connected.

6. The slag removal structure of the anchor drill rod according to claim 1, characterized in that, Several first grooves are arranged in a circular array along the drill hole.

Images