CN216810079U - Hydraulic breaking hammer drill rod - Google Patents
Hydraulic breaking hammer drill rod Download PDFInfo
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- CN216810079U CN216810079U CN202123435804.9U CN202123435804U CN216810079U CN 216810079 U CN216810079 U CN 216810079U CN 202123435804 U CN202123435804 U CN 202123435804U CN 216810079 U CN216810079 U CN 216810079U
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Abstract
The utility model provides a drill rod of a hydraulic breaking hammer, and belongs to the technical field of hydraulic breaking hammers. The drill rod bit solves the technical problems that the existing drill rod bit is provided with four edges, so that the stress of the edges is concentrated, the tip breaking phenomenon is easy to occur, and the like. The hydraulic breaking hammer drill rod comprises a drill bit, a drill body and a drill bit shank, wherein the drill bit is arranged at the front end of the drill body, the drill bit shank is arranged at the rear end of the drill body, the front section surface of the drill bit is a regular polygon, the number of edges is greater than or equal to five, the drill bit is provided with edges with the same number as the number of the edges of the front end surface, the edges start from the front end surface of the drill bit and end at the tail part of the drill bit. Compared with four edges, the design of eight edges of the drill rod has the advantages that the force applied to each edge is smaller under the condition of the same applied force, so that the drill rod can bear larger pressure, the service life of the drill rod is prolonged, the use cost is reduced, and the economic benefit is increased.
Description
Technical Field
The utility model belongs to the technical field of hydraulic breaking hammers, and particularly relates to a drill rod of a hydraulic breaking hammer.
Background
The drill rod of the hydraulic breaking hammer is an essential part and a quick-wear part of the hydraulic breaking hammer, the hydraulic breaking hammer is called as the breaking hammer or the breaker for short, the hydraulic breaking hammer is mainly matched with a host machine such as a hydraulic excavator and the like for use, the power source of the hydraulic breaking hammer is the pressure provided by the excavator, a loader or a pump station, stones and rocks can be effectively broken in engineering construction, and the working efficiency is improved.
The hydraulic breaking hammer is a novel efficient hydraulic impact vibration machine tool, and a working machine outputs high-pressure oil to realize high-frequency reciprocating motion of a piston of the breaking hammer in a cylinder body during working, so that a drill rod at the front section is struck to do work outwards.
At present, the utility model patent of application number 201621027053.3 discloses a hydraulic breaking hammer, including drill rod, preceding cylinder body, well cylinder body, back cylinder body, impact piston and switching-over valve, preceding cylinder body, well cylinder body and back cylinder body connect gradually, the drill rod cartridge is in preceding cylinder body. The tip of the drill rod is square.
When the breaking hammer works in practice, the head of the drill rod strikes rocks, the stress on four edges of the drill rod is concentrated, the phenomenon of tip breaking is easy to occur, the service life of the drill rod is greatly reduced, and the breaking cost is increased.
Disclosure of Invention
In view of the above problems, there is provided a drill rod which is more uniformly stressed and less prone to tip breakage.
The utility model can be realized by the following scheme:
the utility model provides a hydraulic breaking hammer drill rod, includes bore bit, bore bit body and bore bit tail, the bore bit sets up in the front end of bore bit body, the bore bit tail sets up in the rear end of bore bit body, its characterized in that: the front end face of the drill bit is a regular polygon, the number of edges of the front end face is greater than or equal to five, the drill bit is provided with edges with the same number as the number of the edges of the front end face, the edges start from the front end face of the drill bit and end at the tail of the drill bit.
Compared with the design of four edges, the design of more than or equal to five edges has the advantage that each edge can bear smaller force under the condition of same force, so that the design of more than or equal to five edges can bear larger force.
The front end face is in the shape of a regular octagon, and the maximum benefit is brought when the number of the edges is eight.
The side length of the front end face ranges from 120mm to 125mm, so that the strength of the drill rod of the hydraulic breaking hammer can be ensured, the breaking effect of the drill rod of the hydraulic breaking hammer is also ensured, and the effect is optimal when the side length of the front end face is 123 mm.
Every two adjacent edges form a tangent plane, the tangent plane extends from the front end face of the drill bit to the front half part of the drill body, the angle range of the inclination angle alpha of the tangent plane is 4-5 degrees, the intensity of the drill rod of the hydraulic breaking hammer is ensured, the breaking effect of the drill rod of the hydraulic breaking hammer is also ensured, and the effect is optimal when the angle of the inclination angle alpha is 5 degrees.
The drill bit shank is characterized in that two clamping grooves are formed in the drill bit shank, the two clamping grooves are symmetrically arranged about the central axis of the drill bit body, arc-shaped transition surfaces and anti-blocking surfaces are arranged at the front end and the rear end of each clamping groove, the height point of each anti-blocking surface is lower than the outer circle of the drill bit shank, and the transition surfaces are used for connecting the anti-blocking surfaces and the bottoms of the clamping grooves.
The clamping groove is assembled with the hydraulic breaking hammer, the arc-shaped transition surface is arranged between the clamping groove and the drill rod, the drill rod is conveniently clamped on the breaking hammer, and the transition surface can also ensure that cracks or fractures cannot be generated during heat treatment of the tail of the drill rod; the anti-jamming surface can make the drill rod fast assembled and fast disassembled during assembling and disassembling, and prevent jamming.
Compared with the prior art, the utility model has the technical effects that:
this hydraulic breaking hammer drill rod point end is eight regular polygons, and the drill rod head is equipped with the same edge with tip limit number, and eight edges are more even for four original edge atress now, can disperse more pressure, consequently can bear bigger pressure. Actual use data shows that compared with a quadrilateral, the probability of the tip breaking of the existing regular polygonal drill rod is obviously reduced, the service life of the drill rod is prolonged, the use cost is reduced, and the economic benefit is increased.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a side view of the present invention.
Fig. 4 is a close-up view at the tip of the present invention.
In the figure, 1, a drill bit; 11. a front end face; 12. an edge; 13. cutting into noodles; 2. a shank; 3. a drill shank; 31. a card slot; 311. a transition surface; 312. and (5) anti-blocking surface.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
The hydraulic breaking hammer drill rod comprises a drill bit 1, a drill body 2 and a drill shank 3, wherein the drill bit 1 is positioned at the front end of the drill body 2, and the drill shank 3 is positioned at the rear end of the drill body 2, and is characterized in that: the drill bit 1 is characterized in that the front end face 11 of the drill bit 1 is a regular polygon, the number of edges of the front end face 11 is more than or equal to five, the drill bit 1 is provided with edges 12, the number of the edges is the same as that of the edges of the front end face 11, and the edges 12 start from the front end face 11 of the drill bit 1 and end at the tail part of the drill bit 1.
The front end surface 11 has a regular octagonal shape.
The side length of the front end face 11 ranges from 120mm to 125mm, so that the strength of the drill rod of the hydraulic breaking hammer can be ensured, the breaking effect of the drill rod of the hydraulic breaking hammer is also ensured, and the effect is optimal when the side length of the front end face 11 is 123 mm.
Every two adjacent edges 12 form a section 13, the section 13 extends from the front end face 11 of the drill bit to the front half part of the drill body 2, the angle of the inclination angle of the section 13 ranges from 4 degrees to 5 degrees, the strength of the hydraulic breaking hammer drill rod is ensured, meanwhile, the breaking effect of the hydraulic breaking hammer drill rod is also ensured, and the inclination angle is optimal to 5 degrees.
The drill shank 3 is provided with two clamping grooves 31 which are symmetrically arranged about the central axis of the drill body 2, the front end and the rear end of each clamping groove 31 are provided with an arc-shaped transition surface 311 and an anti-clamping surface 312, the height of each anti-clamping surface 312 is lower than the outer circle of the drill shank 3, and the transition surfaces 311 are used for connecting the anti-clamping surfaces 312 and the groove bottoms of the clamping grooves 31.
The clamping groove 31 is assembled with the hydraulic breaking hammer, the arc-shaped transition surface 311 is arranged between the clamping groove 31 and the drill rod, the drill rod is conveniently clamped on the breaking hammer, and the transition surface 311 can also ensure that cracks or fractures cannot be generated during heat treatment of the tail of the drill rod; the anti-jamming surface 312 can be used for fast assembly and disassembly during assembly and disassembly of the drill rod, and can prevent jamming.
The front end face 11 of the drill bit 1 of the hydraulic breaking hammer drill rod is in a regular octagon shape, the drill bit 1 is provided with eight edges 12, the eight edges are stressed more uniformly relative to four edges, pressure can be better dispersed, and larger pressure can be borne. Actual use data shows that compared with a quadrangle, the probability of the tip breakage of the drill rod with the shape of the regular octagon is obviously reduced, the service life of the drill rod is prolonged, the use cost is reduced, and the economic benefit is increased.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes in the structure, shape and principle of the utility model are intended to be covered by the protection scope of the utility model as defined in the appended claims.
Claims (6)
1. A hydraulic breaking hammer drill rod comprising a drill bit (1), a drill body (2) and a drill shank (3), said drill bit (1) being located at the front end of the drill body (2) and said drill shank (3) being located at the rear end of the drill body (2), characterized in that: the drill bit is characterized in that the front end face (11) of the drill bit (1) is a regular polygon, the number of edges is greater than or equal to five, the drill bit (1) is provided with edges (12) the number of which is the same as that of the edges of the front end face (11), and the edges (12) start from the front end face (11) of the drill bit (1) and end at the tail part of the drill bit (1).
2. The hydraulic demolition hammer drill shank according to claim 1, characterized in that: the front end face (11) is in the shape of a regular octagon.
3. The hydraulic demolition hammer drill shank according to claim 1, characterized in that: the side length range of the front end face (11) is 120-125 mm.
4. The hydraulic demolition hammer drill shank according to claim 1, characterized in that: every two adjacent edges (12) form a tangent plane (13), the tangent plane (13) extends from the front end surface (11) of the drill bit (1) to the front half part of the drill body (2), and the angle range of the inclination angle alpha of the tangent plane (13) is 4-5 degrees.
5. The hydraulic demolition hammer drill shank according to claim 1, characterized in that: the drill shank adapter is characterized in that the drill shank adapter (3) is provided with two clamping grooves (31), the two clamping grooves (31) are symmetrically arranged relative to the central axis of the drill shank body (2), arc-shaped transition surfaces (311) and clamping prevention surfaces (312) are arranged at the front end and the rear end of each clamping groove (31), the height point of each clamping prevention surface (312) is lower than the outer circle of the drill shank adapter (3), and the transition surfaces (311) are used for connecting the clamping prevention surfaces (312) with the bottoms of the clamping grooves (31).
6. The hydraulic demolition hammer drill shank according to claim 1, characterized in that: the drill bit (1), the drill body (2) and the drill shank (3) are of an integral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123435804.9U CN216810079U (en) | 2021-12-30 | 2021-12-30 | Hydraulic breaking hammer drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123435804.9U CN216810079U (en) | 2021-12-30 | 2021-12-30 | Hydraulic breaking hammer drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216810079U true CN216810079U (en) | 2022-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123435804.9U Active CN216810079U (en) | 2021-12-30 | 2021-12-30 | Hydraulic breaking hammer drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216810079U (en) |
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2021
- 2021-12-30 CN CN202123435804.9U patent/CN216810079U/en active Active
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