Stone drill

Abstract

The utility model relates to a drill rod, which belongs to the technical field of air pick drill rods and comprises a drill rod body, a flat head is arranged at the front end of the drill rod body, the longitudinal section of the flat head is in an isosceles triangle shape, a blunt blade face is arranged at the front end of the flat head, and the blunt blade face is rectangular. The contact area is increased through the blunt blade face, a rusted screw can be more easily aligned, and therefore the screw can be quickly damaged and knocked off in a labor-saving mode under the impact effect of an air pick, the labor intensity of workers is greatly relieved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pneumatic pick chisels, and particularly relates to a chisel. Background Art

[0002] A pneumatic pick is a handheld construction tool that uses compressed air as a power source and utilizes impact to break hard objects. It is mostly used in coal mines. It is composed of a gas distribution mechanism, an impact mechanism, and a chisel. When the pneumatic pick is in operation, the chisel is held against the construction surface, and the other end is passed into the cylinder to push the handle sleeve, compress the spring of the plunger valve and connect the air path. There are many longitudinal air holes around the cylinder wall, and the gas distribution valve automatically distributes gas. A gas distribution valve box is installed at the rear end of the cylinder to make the impact hammer reciprocate continuously, hit the tail end of the chisel, and break the construction body. The front end of the existing chisel is a pointed structure, which has a good rock breaking effect. However, there are many fasteners such as screws that are severely corroded in the mine. It is difficult to disassemble the corroded screws. It is time-consuming and laborious to disassemble or destroy them by manpower. Therefore, pneumatic picks are often used to violently destroy the corroded screws through the impact of the pneumatic pick. They can only be destroyed by destruction. However, since the front end of the existing pneumatic pick chisel is a pointed structure, the pointed head and the screw are in point contact, it is not easy to align the screw, which affects the work efficiency.

[0003] Therefore, a kind of brazing tool that is used to efficiently remove and damage corroded fasteners is in urgent need of appearance. Utility Model Content

[0004] The utility model provides a brazing bit, which is used to solve the technical problem that the brazing bit in the prior art cannot efficiently remove damaged rusted fasteners.

[0005] The utility model is realized through the following technical scheme: a drill bit comprises a drill rod body, the front end of the drill rod body is provided with a flat head, the longitudinal section of the flat head is an isosceles triangle, and the front end of the flat head is provided with a blunt blade surface.

[0006] In order to better realize the utility model, further optimization is made in the above structure, and the flat head and the drill rod body are an integrated structural part.

[0007] In order to better realize the utility model, further optimization is made in the above structure, and a quenching layer is provided on the surface of the flat head.

[0008] In order to better realize the utility model, further optimization is made in the above structure, the cross-sectional shape of the drill rod body is circular, and the rear end of the drill rod body is connected to the output end of the pneumatic pick.

[0009] In order to better realize the utility model, the above structure is further optimized to further include a positioning frustum, which is coaxially arranged at a position of the drill rod body close to the rear end.

[0010] In order to better realize the utility model, further optimization is made in the above structure, and the positioning frustum and the drill rod body are an integrated structural part.

[0011] In order to better realize the utility model, further optimization is made in the above structure, and the drill rod body is a solid rod.

[0012] In order to better realize the utility model, further optimization is made in the above structure, and the drill rod body is a structural member made of carbon steel.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The drill provided by the utility model comprises a drill rod body, a flat head is provided at the front end of the drill rod body, the longitudinal section of the flat head is in the shape of an isosceles triangle, and a blunt blade surface is provided at the front end of the flat head. With this structure, by setting the front end of the drill rod body into a flat head structure, the blunt blade surface increases the contact area, and can be more easily aligned with rusted screws, so that the screws can be quickly and labor-savingly destroyed and knocked out under the impact of a pneumatic pick, which greatly reduces the labor intensity of workers, improves work efficiency, and makes the utility model more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of the brazing tool in the utility model;

[0017] Figure 2 yes Figure 1 View of center A;

[0018] In the figure:

[0019] 1-Drill rod body;

[0020] 2-Flat head;

[0021] 3-Blunt blade surface;

[0022] 4- Positioning the round table. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0024] In the description of the present utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0026] Embodiment 1:

[0027] In this embodiment, a brazing tool such as Figure 1 and Figure 2 As shown, it comprises a drill rod body 1, a flat head 2 is provided at the front end of the drill rod body 1, the longitudinal section of the flat head 2 is an isosceles triangle, and a blunt blade surface 3 is provided at the front end of the flat head 2.

[0028] By adopting this structure, by setting the front end of the above-mentioned drill rod body 1 into the structure of the above-mentioned flat head 2, its blunt blade surface 3 increases the contact area, and can be more easily aligned with the rusted screws, so that under the impact of the pneumatic pick, the screws can be quickly and laboriously destroyed and knocked out, which greatly reduces the labor intensity of the workers, improves work efficiency, and makes the practicality of the utility model stronger.

[0029] In this embodiment, the flat head 2 and the drill rod body 1 are an integrated structural component, and the integrated formation improves the structural strength and prolongs the service life.

[0030] As an optimization, a quenching layer is provided on the surface of the flat head 2. After quenching, the flat head 2 has higher hardness, stronger toughness, more wear resistance, and is not easy to deform, thereby avoiding the collapse of the blunt blade surface 3 and improving the service life. Other coatings that increase the surface hardness may also be used on the surface.

[0031] In this embodiment, Figure 2 As shown, the cross-sectional shape of the drill rod body 1 is circular, and the rear end of the drill rod body 1 is connected to the output end of the pneumatic pick, and the flat head 2 at the front end of the drill rod body 1 is driven by the pneumatic pick to impact the corroded fastener. Of course, in order to match the output end of the pneumatic pick, the cross-sectional shape of the drill rod body 1 can also be a square or other polygon.

[0032] In this embodiment, Figure 1 and Figure 2 As shown, it also includes a positioning cone 4, which is coaxially arranged on the drill rod body 1 near the rear end. The positioning cone 4 is used to limit the connection length between the drill rod body 1 and the output end of the pneumatic pick, and the positioning cone 4 abuts against the end face of the output end of the pneumatic pick.

[0033] As an optimization, the positioning cone 4 and the drill rod body 1 are an integrated structural component, and the integrated formation improves the structural strength and prolongs the service life.

[0034] In this embodiment, the drill rod body 1 is a solid rod with higher structural strength, bending strength and compressive strength, which prevents it from deforming and bending under the impact of a pneumatic pick and affecting its service life. As an optimization, the drill rod body 1 is a structural part made of carbon steel, which is suitable for crushing underground rocks and minerals and corroded fasteners.

[0035] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A brazing tool, characterized in that: The drill rod body (1) comprises a flat head (2) at the front end of the drill rod body (1), the longitudinal section of the flat head (2) is an isosceles triangle, and the front end of the flat head (2) is provided with a blunt blade surface (3).

2. A brazing tool according to claim 1, characterized in that: The flat head (2) and the drill rod body (1) are an integrated structural component.

3. A brazing tool according to claim 1, characterized in that: The surface of the flat head (2) is provided with a quenching layer.

4. A brazing tool according to claim 1, characterized in that: The cross-sectional shape of the drill rod body (1) is circular, and the rear end of the drill rod body (1) is connected to the output end of a pneumatic pick.

5. A brazing rod according to claim 1, characterized in that: It also comprises a positioning truncated platform (4), which is coaxially arranged at a position close to the rear end of the drill rod body (1).

6. A brazing rod according to claim 5, characterized in that: The positioning truncated table (4) and the drill rod body (1) are an integrated structural component.

7. A brazing tool according to claim 1, characterized in that: The drill rod body (1) is a solid rod.

8. A brazing tool according to claim 1, characterized in that: The drill rod body (1) is a structural component made of carbon steel.

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