Drill bit structure of coring drill for crushing rock

Abstract

The utility model discloses a coring drill bit structure for crushing rocks, which comprises a machine body, the machine body is of a circular cylindrical structure, a plurality of groups of crushing mechanisms are arranged on the lower end face of the machine body, each group of crushing mechanism comprises three pitch teeth which are arranged in a staggered manner, and each pitch tooth comprises a base. A first limiting block is installed in each base in an embedded mode, a second limiting block embedded into the base is arranged at the top end of each first limiting block, a round plate is arranged at the bottom end of each first limiting block, the pitch tooth arranged in the middle of the three pitch teeth is perpendicular to the axis of the machine body, and the pitch teeth at the two ends face and are away from the axis of the machine body correspondingly. The first limiting block and the second limiting block jointly form a connecting mechanism, the drill bit for the coring machine has the advantages of being high in rock beating speed and low in abrasion, and the problems that an existing drill bit for the coring machine is low in rock beating efficiency and large in abrasion are solved.

Description

Technical Field

[0001] This utility model relates to the field of quarrying equipment technology, specifically to a core drill bit structure for crushing rocks. Background Technology

[0002] Core drilling has crucial applications in numerous fields. In geological exploration, analysis of rock core samples reveals information such as stratigraphic structure, rock composition, and geological formations, providing key data for mineral resource exploration and geological hazard assessment. For example, in locating metal veins, core drilling obtains samples of the rock containing the vein, helping geologists determine its direction and grade. In civil engineering, core drilling is used to assess the rock mechanical properties and stability of building foundations, tunnel engineering, and bridge foundations. For instance, before constructing highway tunnels in mountainous areas, core drilling is necessary to understand rock hardness and fracture distribution, enabling the design of appropriate tunnel support schemes. In oil and gas exploration and development, core drilling obtains parameters such as porosity and permeability of underground rocks, providing data support for the evaluation and development of oil and gas reservoirs.

[0003] When a core drill is in operation, it uses the rotation of its internal drill bit to break the rock. During the breaking process, a groove is made around the core, and then the core is broken off and removed. However, the existing drill bits have a small groove around the core, which is not conducive to removing the core. In addition, the core tends to stick to the machine body, which accelerates the wear of the machine body. Utility Model Content

[0004] The purpose of this invention is to provide a core drill bit structure for rock breaking, which has the advantages of fast rock breaking speed and low wear, and solves the problems of low rock breaking efficiency and high wear of current core drill bits.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a core drill bit structure for crushing rocks, comprising a body, the body being a cylindrical structure, and multiple sets of crushing mechanisms being provided on the lower end face of the body, each set of crushing mechanisms including three staggered teeth, each tooth including a base, each base having a first limiting block fitted inside, the top of the first limiting block having a second limiting block embedded in the base, and the bottom having a circular plate.

[0006] Preferably, the middle tooth of the three teeth is arranged perpendicular to the fuselage axis, while the teeth at both ends are arranged towards and away from the fuselage axis, respectively.

[0007] Preferably, the angle between the two ends of the three teeth and the vertical plane is °, and the first limiting block and the second limiting block together constitute the connecting mechanism.

[0008] Preferably, the lower edge of the second limiting block is placed inside the upper edge of the first limiting block, and two threaded grooves with opposite spiral directions are symmetrically arranged at the top of the second limiting block. A bolt that spirals through the base and extends into the second limiting block is provided on the outside of the base.

[0009] Preferably, the bottom end of the circular plate is provided with a drill body, the bottom end of the drill body is provided with a connector, and the bottom end of the connector is provided with a crushing head.

[0010] Preferably, the drill body is cylindrical, the connector is a frustum-shaped structure that is wider at the top and narrower at the bottom, the breaker head is a conical structure that is wider at the top and narrower at the bottom, and the bottom end of the breaker head is spherical.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model, by setting up a machine body, a crushing mechanism, and segmented teeth, uses several crushing mechanisms set at the bottom of the machine body to crush rocks through three segmented teeth facing different directions. This can increase the groove distance between the rock core and the mountain during rock crushing, and the staggered segmented teeth can improve the rock crushing speed and reduce the wear of the drill bit segmented teeth.

[0013] 2. This utility model, by setting up a base, bolts, a first limiting block, a second limiting block, a threaded groove, and a circular plate, allows the second limiting block to be released by rotating the bolts after one side of the inclined circular plate is severely worn. Then, the circular plate is pulled out, rotated 180°, and reinserted into the base. The circular plate is then fixed by the screw engagement of the bolts and the threaded groove, replacing the severely worn side with the more intact side, thus saving production costs. Attached Figure Description

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

[0015] Figure 2 This is a bottom view of the structure of this utility model;

[0016] Figure 3 This utility model Figure 1 Schematic diagram of the intermediate crushing mechanism;

[0017] Figure 4 This utility model Figure 3 A schematic diagram of a partial vertical cross-sectional structure of the middle section tooth;

[0018] Figure 5 This utility model Figure 4 A schematic diagram of the vertical cross-sectional structure of the connecting mechanism.

[0019] The reference numerals and names in the figure are as follows:

[0020] 1. Machine body; 2. Crushing mechanism; 3. Pitch teeth; 31. Base; 32. Bolt; 33. First limit block; 34. Second limit block; 35. Threaded groove; 36. Circular plate; 37. Drill body; 38. Connector; 39. Crushing head. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of the embodiments of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0023] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0024] Please see Figures 1 to 5This utility model provides an embodiment of a core drill bit structure for rock crushing, comprising a body 1, which is a cylindrical structure, and multiple sets of crushing mechanisms 2 are provided on the lower end face of the body 1. Each set of crushing mechanisms 2 includes three staggered teeth 3, each tooth 3 including a base 31, and a first limiting block 33 is fitted inside each base 31. The top of the first limiting block 33 is provided with a second limiting block 34 embedded in the base 31, and the bottom is provided with a circular plate 36. The middle tooth 3 of the three teeth 3 is arranged perpendicular to the axis of the body 1, and the teeth 3 at both ends are arranged facing and away from the axis of the body 1, respectively. The teeth 3 at both ends of the three teeth 3 form a vertical plane with the vertical plane. The included angle is 15°. The first limiting block 33 and the second limiting block 34 together form a connecting mechanism. The lower edge of the second limiting block 34 is placed inside the upper edge of the first limiting block 33. The top of the second limiting block 34 is symmetrically provided with two threaded grooves 35 with opposite spiral directions. The outer side of the base 31 is provided with a bolt 32 that spirals through the base 31 and extends into the second limiting block 34. The bottom end of the circular plate 36 is provided with a drill body 37. The bottom end of the drill body 37 is provided with a connector 38. The bottom end of the connector 38 is provided with a crushing head 39. The drill body 37 is cylindrical. The connector 38 is a frustum-shaped structure that is wider at the top and narrower at the bottom. The crushing head 39 is a conical structure that is wider at the top and narrower at the bottom. The bottom end of the crushing head 39 is spherical.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A core drill bit structure for rock breaking, comprising a body (1), characterized in that: The machine body (1) is a cylindrical structure, and multiple crushing mechanisms (2) are provided on the lower end face of the machine body (1). Each crushing mechanism (2) includes three staggered teeth (3). Each tooth (3) includes a base (31). A first limiting block (33) is fitted inside each base (31). A second limiting block (34) is provided at the top of the first limiting block (33) and embedded in the base (31). A circular plate (36) is provided at the bottom.

2. The core drill bit structure for rock breaking according to claim 1, characterized in that: Of the three teeth (3), the middle tooth (3) is positioned perpendicular to the axis of the fuselage (1), while the teeth (3) at both ends are positioned toward and away from the axis of the fuselage (1), respectively.

3. The core drill bit structure for rock breaking according to claim 2, characterized in that: The angle between the two ends of the three teeth (3) and the vertical plane is 15°, and the first limiting block (33) and the second limiting block (34) together constitute the connecting mechanism.

4. The core drill bit structure for rock breaking according to claim 1, characterized in that: The lower edge of the second limiting block (34) is placed inside the upper edge of the first limiting block (33), and the top of the second limiting block (34) is symmetrically provided with two threaded grooves (35) with opposite spiral directions. The outer side of the base (31) is provided with a bolt (32) that spirally penetrates the base (31) and extends into the second limiting block (34).

5. The core drill bit structure for rock breaking according to claim 1, characterized in that: The bottom end of the circular plate (36) is provided with a drill body (37), the bottom end of the drill body (37) is provided with a connector (38), and the bottom end of the connector (38) is provided with a crushing head (39).

6. The core drill bit structure for rock breaking according to claim 5, characterized in that: The drill body (37) is cylindrical, the connector (38) is a frustum-shaped structure that is wider at the top and narrower at the bottom, and the breaker head (39) is a conical structure that is wider at the top and narrower at the bottom, with the bottom of the breaker head (39) being spherical.

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