Stable electric hammer drill bit

Abstract

The utility model discloses a stable type electric hammer drill bit which comprises a drill rod, a threaded hole is formed in the bottom of the drill rod, a flat shovel is arranged below the drill rod, the upper surface of the flat shovel is fixedly connected with a fixing rod, and a threaded part is arranged on the side surface of the fixing rod and close to the edge of the top of the fixing rod. The threaded part is in threaded fit connection with the threaded hole, a protective cover is fixedly connected to the position, close to the top edge, of the side surface of the drill rod, a mounting handle is fixedly connected to the top of the drill rod, and a plurality of mounting grooves are formed in the position, close to the top edge, of the side surface of the mounting handle; the multiple mounting grooves are distributed in an annular array mode with the axis of the drill rod as the center. Through the arrangement of the threaded hole, the fixing rod, the threaded part and the flat shovel, under the condition that the drill bit is not replaced, large hole digging, grooving or concrete crushing can be effectively completed, small hole digging or round hole digging can also be achieved, and operation of construction operation can be simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bits, in particular to a stable electric hammer drill bit. Background Art

[0002] The electric hammer drill bit is installed on the electric hammer drill. The electric hammer drill is a handheld power tool that combines the functions of "impact drill" and "electric hammer". The "impact drill" is mainly used for rotary cutting, and the impact mechanism with impact force drives the impact drill bit. While driving the drill bit to rotate, there is also a reciprocating hammering motion in a direction perpendicular to the rotating surface of the drill bit. It is used for drilling holes in concrete, bricks, tiles, marble and other materials. The "electric hammer" drives the steel chisel with impact force, and is used for operations such as grooving, opening large holes or breaking concrete in concrete, bricks and other materials.

[0003] The current electric hammer drill bits are mainly used for grooving, drilling large holes or breaking concrete, but cannot be used for drilling small holes or round holes. When small holes or round holes need to be drilled, different drill bits need to be replaced, which makes the overall operation more cumbersome during the drill bit switching process. Utility Model Content

[0004] The utility model provides a stable electric hammer drill bit, which can effectively complete the drilling of large holes, grooves or concrete crushing and the drilling of small holes or round holes without replacing the drill bit, which is conducive to simplifying the operation of construction work.

[0005] In order to achieve the above-mentioned purpose, a stable electric hammer drill is provided, including a drill rod, a threaded hole is provided at the bottom of the drill rod, a flat shovel is provided below the drill rod, a fixing rod is fixedly connected to the upper surface of the flat shovel, a threaded portion is provided on the side surface of the fixing rod near the top edge, the threaded portion is threadedly connected to the threaded hole, and a protective cover is fixedly connected to the side surface of the drill rod near the top edge. The drill rod is provided to facilitate drilling, the threaded hole is provided to facilitate the cooperation with the threaded portion, the flat shovel is provided to facilitate the crushing of concrete, the fixing rod is provided to facilitate the positioning connection of the flat shovel, the threaded portion is provided to facilitate the cooperation with the threaded hole, and the protective cover is provided to facilitate the protection when crushing concrete blocks on the one hand, and to facilitate the acceptance of concrete blocks crushed at high places on the other hand.

[0006] According to the stable electric hammer drill bit, a mounting handle is fixedly connected to the top of the drill rod, and a mounting groove is provided on the side surface of the mounting handle near the top edge. The mounting handle is provided to facilitate the positioning and installation of the drill rod, and the mounting groove is provided to facilitate the positioning and installation.

[0007] According to the stable electric hammer drill bit, the number of the mounting slots is multiple, and the multiple mounting slots are distributed in a circular array with the axis of the drill rod as the center. The multiple mounting slots are provided to facilitate the stability of the drill rod installation.

[0008] According to the stable electric hammer drill bit, the side surface of the drill rod is provided with a chip groove, the chip groove is provided with a feed port and a discharge port, and the chip groove is spirally distributed. The chip groove is provided to facilitate the discharge of waste residue during the drilling process, and the feed port and the discharge port are provided to facilitate the waste residue to enter the chip groove and be discharged.

[0009] According to the stable electric hammer drill bit, the protective cover is shaped like a trumpet and is made of acrylic material.

[0010] The beneficial effects of the utility model include: by setting the threaded hole, the fixing rod, the threaded part and the flat shovel, it is possible to effectively drill large holes, grooves or crush concrete, and drill small holes or round holes without replacing the drill bit, which is conducive to simplifying the operation of the construction work.

[0011] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0013] Figure 1 This is a schematic diagram of the external structure of a stable electric hammer drill bit of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of a stable electric hammer drill bit of the utility model;

[0015] Figure 3 For this utility model Figure 2 A is an enlarged view of the middle image.

[0016] Legend:

[0017] 1. Drill rod; 2. Flat shovel; 3. Fixed rod; 4. Protective cover; 5. Mounting handle; 6. Mounting groove; 7. Chip groove; 8. Threaded hole; 9. Threaded part. DETAILED DESCRIPTION

[0018] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0019] Example:

[0020] Reference Figures 1 to 3 The utility model embodiment is a stable electric hammer drill bit, which includes a drill rod 1, a threaded hole 8 is opened at the bottom of the drill rod 1, and the threaded hole 8 is colinear with the axis of the drill rod 1. A flat shovel 2 is arranged below the drill rod 1, and a fixing rod 3 is fixedly connected to the upper surface of the flat shovel 2. The fixing rod 3 is cylindrical in shape, and a threaded portion 9 is opened on the side surface of the fixing rod 3 near the top edge. The threaded portion 9 is threadedly connected with the threaded hole 8. A protective cover 4 is fixedly connected to the side surface of the drill rod 1 near the top edge. The shape of the protective cover 4 is trumpet-shaped, and the material of the protective cover 4 is acrylic.

[0021] A mounting handle 5 is fixedly connected to the top of the drill rod 1, and a mounting groove 6 is provided on the side surface of the mounting handle 5 near the top edge. There are multiple mounting grooves 6, and the multiple mounting grooves 6 are distributed in a circular array with the axis of the drill rod 1 as the center. A chip removal groove 7 is provided on the side surface of the drill rod 1, and the chip removal groove 7 is provided with a feed port and a discharge port, and the chip removal groove 7 is spirally distributed.

[0022] Working principle: When in use, it is installed on the drilling rig through the mounting handle 5 to break the hard concrete blocks. When the concrete blocks at high places are broken, the waste residue that falls will be received by the protective cover 4. When drilling is required, the flat shovel 2 will be removed, and then the drill rod 1 will be used to drill.

[0023] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A stable electric hammer drill bit, characterized in that: The invention comprises a drill rod (1), a threaded hole (8) is provided at the bottom of the drill rod (1), a flat shovel (2) is arranged below the drill rod (1), a fixing rod (3) is fixedly connected to the upper surface of the flat shovel (2), a threaded portion (9) is provided on the side surface of the fixing rod (3) near the top edge, the threaded portion (9) is threadedly connected to the threaded hole (8), and a protective cover (4) is fixedly connected to the side surface of the drill rod (1) near the top edge.

2. A stable electric hammer drill bit according to claim 1, characterized in that: A mounting handle (5) is fixedly connected to the top of the drill rod (1), and a mounting groove (6) is provided on the side surface of the mounting handle (5) near the top edge.

3. A stable electric hammer drill bit according to claim 2, characterized in that: The number of the installation grooves (6) is multiple, and the multiple installation grooves (6) are distributed in a circular array with the axis of the drill rod (1) as the center.

4. A stable electric hammer drill bit according to claim 1, characterized in that: The side surface of the drill rod (1) is provided with a chip removal groove (7), the chip removal groove (7) is provided with a feed port and a discharge port, and the chip removal groove (7) is distributed in a spiral manner.

5. A stable electric hammer drill bit according to claim 1, characterized in that: The protective cover (4) is shaped like a trumpet and is made of acrylic material.

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