Self-positioning type reaming drilling tool for geological drilling

Abstract

The utility model relates to the technical field of geological drilling equipment, and discloses a geological drilling self-positioning type reaming drilling tool which comprises a drill body. The alloy base is arranged at the front end of the drill body; the positioning pile is arranged at the front end of the alloy base and is in a truncated cone shape, positioning alloy is arranged on the front end face of the positioning pile, and cutting ring teeth are arranged on the side wall of the positioning pile. The positioning pile is arranged to be in a truncated cone shape, the positioning pile can be suitable for small holes with different diameters to a certain extent during reaming operation, and the application range of the positioning pile is widened. The positioning alloy on the front end face of the positioning pile and the cutting ring teeth on the side wall of the positioning pile can achieve expanding type cutting and crushing of the geological soil layer, and then the crushing efficiency of the reaming drilling tool is improved. In addition, the self-positioning effect is achieved through the positioning pile, and the problems that in actual production, chambering is not easy to position, eyelets deviate, the eyelets are not standard, and the hole diameters are inconsistent are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of geological drilling equipment, in particular to a geological drilling self-positioning hole-reaming drill tool. Background Art

[0002] Traditional geological drilling equipment typically performs a preliminary drilling operation followed by further expansion using a separate reaming device. This process is not only cumbersome, but also often causes the reaming device to deviate from the center of the original drilled hole due to its poor guidance, compromising project quality. Furthermore, some existing reaming devices are complex, require high maintenance, and are prone to damage in high-intensity geological conditions. Therefore, developing a new type of reaming tool with a simple structure, easy operation, high precision, and durability is crucial.

[0003] The patent with announcement number CN220748150U discloses a positioning reamer. The drill head has a frustum-shaped structure and an alloy surface on the top. A positioning pile is provided in the center of the alloy surface. A positioning alloy is provided on the positioning pile. Impact alloy columns are evenly distributed on the alloy surface. By setting the positioning pile, during the reaming operation, the positioning pile is inside the small hole. The outer diameter of the positioning pile coincides with the hole being reamed, which is conducive to positioning and can improve the regularity of drilling. Therefore, the positioning pile can play a positioning role during reaming. During reaming, the reamer rotates to impact the alloy column to drill through the stone and soil around the small hole, thereby achieving the purpose of reaming.

[0004] However, this patent has the following defects during use: on the one hand, since the positioning pile is cylindrical, the outer diameter of the positioning pile needs to match the hole to be expanded during operation, otherwise it will be impossible to insert or the positioning will be unstable after insertion, resulting in poor applicability; on the other hand, the working surface of the positioning pile is small during the hole expansion process, and the alloy surface mostly bears the work of crushing the stone, and the crushing efficiency needs to be improved.

[0005] In view of this, how to improve the applicability and crushing efficiency of the existing reaming drill tools has become a technical problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0006] The utility model aims to provide a self-positioning reaming drill tool for geological drilling, so as to overcome the above-mentioned shortcomings.

[0007] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a geological drilling self-positioning reaming drill tool, comprising:

[0008] Drill body;

[0009] An alloy base provided at the front end of the drill body; and

[0010] A positioning pile is provided at the front end of the alloy base, and the positioning pile is in the shape of a truncated cone. The front end surface of the positioning pile is provided with a positioning alloy, and the side wall of the positioning pile is provided with cutting ring teeth.

[0011] Furthermore, the side walls of the positioning piles are provided with spiral positioning exhaust slots.

[0012] Furthermore, an impact alloy column is provided on the front end surface of the alloy base.

[0013] Furthermore, the front end face of the alloy base is a conical surface, and the front end face and side wall of the alloy base are respectively provided with a conical exhaust groove and a main exhaust groove, the upper end of the conical exhaust groove is connected to the positioning exhaust groove, and the lower end of the conical exhaust groove is connected to the upper end of the main exhaust groove.

[0014] Furthermore, the plurality of main exhaust slots separate the alloy base into a plurality of airfoil structures, the side walls of the airfoil structures are provided with auxiliary exhaust slots, and the front end faces of the airfoil structures are provided with the impact alloy columns.

[0015] Furthermore, high-pressure air holes are arranged in the axial direction of the drill body and the alloy base, and high-pressure side air holes connected to the high-pressure air holes are arranged in the alloy base, and the high-pressure side air holes are connected to the conical exhaust slots.

[0016] Furthermore, the high-pressure side air hole is connected to the upper end of the conical exhaust slot.

[0017] Furthermore, a central air hole is arranged in the axial direction of the positioning pile, and the central air hole is connected to the high-pressure air hole.

[0018] Compared with the prior art, the present invention has at least the following advantages:

[0019] The positioning piles are designed in a truncated conical shape, making them suitable for small holes of varying diameters during reaming operations, thus expanding their applicability. The positioning alloy on the front end of the positioning piles and the cutting ring teeth on the side walls enable expansive cutting and crushing of the geological layer, thereby improving the crushing efficiency of the reaming drill. Furthermore, the self-positioning effect achieved by the positioning piles avoids problems encountered in actual production, such as difficulty in reaming positioning, hole deviation, non-standard hole patterns, and inconsistent hole diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the overall structure of the utility model geological drilling self-positioning hole expansion drill;

[0022] Figure 2 This is a cross-sectional view of the utility model of a self-positioning reaming drill tool for geological drilling.

[0023] Figure numerals: 1. drill body; 2. alloy base; 3. positioning pile; 4. positioning alloy; 5. cutting ring teeth; 6. positioning exhaust slot; 7. impact alloy column; 8. conical exhaust slot; 9. main exhaust slot; 10. auxiliary exhaust slot; 11. high-pressure air hole; 12. high-pressure side air hole; 13. center air hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0026] Reference Figure 1-2 The present invention provides a self-positioning reaming drill tool for geological drilling, comprising a drill body 1, an alloy base 2, and positioning stakes 3. The rear end of the drill body 1 is provided with a connecting key (not shown), which connects the rear end of the drill body 1 to the drill rod of the drilling rig via the connecting key. The front end of the drill body 1 is provided with the alloy base 2, and the front end of the alloy base 2 is provided with positioning stakes 3. The positioning stakes 3 are truncated conical in shape, with positioning alloy 4 provided on the front end surface of the positioning stakes 3, and cutting ring teeth 5 provided on the side walls of the positioning stakes 3.

[0027] The truncated conical shape of the positioning pile 3 allows for a certain degree of adaptability to small holes of varying diameters during reaming operations, broadening the scope of application of the positioning pile 3. The positioning alloy 4 on the front end of the positioning pile 3 and the cutting ring teeth 5 on the sidewalls enable expansion-type cutting and crushing of the geological stratum, gradually increasing the diameter of the reamed hole. This achieves a synchronous reaming effect with the positioning pile 3, thereby improving the crushing efficiency of the reaming drill. Furthermore, by utilizing the positioning pile 3 to achieve self-positioning, the present utility model avoids problems encountered in actual production, such as difficulty in reaming positioning, hole deviation, non-standard hole patterns, and inconsistent hole diameters.

[0028] The positioning pile 3 is made of alloy material. The side wall of the positioning pile 3 is provided with a spiral positioning exhaust groove 6, which can realize the powder discharge synchronously with the screwing process of the drill bit, thereby enhancing the powder discharge effect.

[0029] Preferably, the front end face of the alloy base 2 is provided with an impact alloy column 7, and its front end face is a tapered surface, and the front end face and side wall are respectively provided with a tapered exhaust groove 8 and a main exhaust groove 9. The multiple main exhaust grooves 9 divide the alloy base 2 into multiple airfoil structures, and the side walls of the airfoil structures are provided with auxiliary exhaust grooves 10, and the front end face of the airfoil structures is also provided with an impact alloy column 7.

[0030] In addition, the alloy base 2 is provided with a high-pressure side air hole 12 that communicates with the high-pressure air hole 11 arranged along the axis of the drill body 1 and the alloy base 2. The high-pressure side air hole 12 is also connected to the upper end of the conical exhaust slot 8. At the same time, a central air hole 13 is arranged along the axis of the positioning pile 3, which communicates with the high-pressure air hole 11 along the axis of the drill body 1 and the alloy base 2.

[0031] The high-pressure air hole 11 in the drill body 1 is connected to the high-pressure air, which is respectively led to the positioning pile 3 and the alloy base 2 through the central air hole 13 and the high-pressure side air hole 12. The high-pressure air discharges the crushed stone and soil through the positioning exhaust groove 6, the conical exhaust groove 8, the main exhaust groove 9 and the auxiliary exhaust groove 10, avoiding the crushed stone and soil from causing secondary wear to the reaming drill tool and improving the applicability efficiency of the device.

[0032] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0033] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A self-positioning reaming drill for geological drilling, characterized in that: include: Drill body (1); An alloy base (2) arranged at the front end of the drill body (1); as well as A positioning pile (3) is provided at the front end of the alloy base (2), the positioning pile (3) being in the shape of a truncated cone, a positioning alloy (4) being provided on the front end surface of the positioning pile (3), and a cutting ring tooth (5) being provided on the side wall of the positioning pile (3).

2. The geological drilling self-positioning reaming drill according to claim 1, characterized in that: The side wall of the positioning pile (3) is provided with a spiral positioning exhaust groove (6).

3. The geological drilling self-positioning reaming drill according to claim 2, characterized in that: The front end surface of the alloy base (2) is provided with an impact alloy column (7).

4. The self-positioning reaming drill tool for geological drilling according to claim 3, characterized in that: The front end face of the alloy base (2) is a conical surface, and the front end face and side wall of the alloy base (2) are respectively provided with a conical exhaust groove (8) and a main exhaust groove (9), the upper end of the conical exhaust groove (8) is connected to the positioning exhaust groove (6), and the lower end of the conical exhaust groove (8) is connected to the upper end of the main exhaust groove (9).

5. The geological drilling self-positioning reaming drill according to claim 4, characterized in that: The alloy base (2) is divided into a plurality of airfoil structures by the plurality of main exhaust slots (9), the side walls of the airfoil structures are provided with auxiliary exhaust slots (10), and the front end surfaces of the airfoil structures are provided with the impact alloy columns (7).

6. The geological drilling self-positioning reaming drill according to claim 5, characterized in that: High-pressure air holes (11) are arranged in the axial direction of the drill body (1) and the alloy base (2); high-pressure side air holes (12) connected to the high-pressure air holes (11) are arranged in the alloy base (2); and the high-pressure side air holes (12) are connected to the conical exhaust slots (8).

7. The self-positioning reaming drill tool for geological drilling according to claim 6, characterized in that: The high-pressure side air hole (12) is in communication with the upper end of the conical exhaust slot (8).

8. The self-positioning reaming drill tool for geological drilling according to claim 6, characterized in that: A central air hole (13) is arranged in the axial direction of the positioning pile (3), and the central air hole (13) is connected to the high-pressure air hole (11).

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