CN201241703Y - Core inlaid drill rod for hydraulic breaking hammer - Google Patents
Core inlaid drill rod for hydraulic breaking hammer Download PDFInfo
- Publication number
- CN201241703Y CN201241703Y CNU2008201482887U CN200820148288U CN201241703Y CN 201241703 Y CN201241703 Y CN 201241703Y CN U2008201482887 U CNU2008201482887 U CN U2008201482887U CN 200820148288 U CN200820148288 U CN 200820148288U CN 201241703 Y CN201241703 Y CN 201241703Y
- Authority
- CN
- China
- Prior art keywords
- drill rod
- core
- hydraulic breaking
- breaking hammer
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a core insert drill rod for hydraulic breaking hammer, belonging to mine-used machines, which comprises a drill rod body provided with a working end for beating rocks and a striking end for bearing a piston. The core insert drill rod is characterized in that the working end of the drill rod body is provided with a center hole in which a rigid core rod is embedded. The core insert drill rod has the advantages of low cost, high rigidity, long service life, and high working efficiency, can improve the service life of the drill rod of hydraulic breaking hammers by 4 to 6 times, and can be used to break hard materials such as rocks, concretes and the like.
Description
Technical field
The utility model belongs to mine equipment, is specifically related to a kind of core inlaid drill rod for hydraulic breaking hammer.
Background technology
The hydraulic crushing drill steel is in order to hard objects such as crushed rock, concrete, the strike end that requires drill steel to bear piston has good toughness, and is indeformable when bearing the power of beating, and do not burst apart, the drill steel body does not rupture, and the working end of drill steel has the requirement of high strength, tough and tensile and abrasion resistance.Hydraulic crushing drill steel early stage of using in the market, as states such as Sweden, Japan, they selected for use the high-quality steel through forging and repeatedly heat treatment mainly based on import parts, and performance is better, but brings a high price, and every all more than ten thousand yuan, and the user is difficult to bear; Korea S's drill steel entered Chinese market afterwards, and it selects for use low steel of price such as SCM445 through Overheating Treatment, and its application life, generally about 21 days, price was about 3000 yuan; At present market sale more be homemade drill steel, material all adopts No. 45 forgings to make or make without forging, price is lower, application life is generally at 7-10 days.It adopts the entire body structure, according to the requirement of work characteristics, the head of drill steel, mid portion, afterbody are to differences such as hardness, intensity, anti-bending strengths, and it causes not enough defective in heat treatment process, hardness can not be too high, fall slag as the too high head that causes, phenomenons such as pars intermedia fracture are crossed the low leading edge deformation that then causes as hardness, easy to wear, problems such as head polishes, and breaking capacity obviously descends, and the life-span is short.Existing market is improved quality preferably, and drill steel also is difficult to satisfy drill steel to material and heat treated whole requirement.
Summary of the invention
Have above-mentioned deficiency for overcoming prior art, the purpose of this utility model is to provide a kind of cost low, hardness height, long service life, the core inlaid drill rod for hydraulic breaking hammer that operating efficiency is high.
For achieving the above object, the technical solution adopted in the utility model: this core inlaid drill rod for hydraulic breaking hammer has the drill steel body, the drill steel body has working end of hitting rock and the strike end that bears piston, and the working end of drill steel body has centre bore, is inlaid with hard core rod in the centre bore.
Described hard core rod is tool steel plug or carbide alloy steel core bar.
In axial direction be provided with air discharge duct on the inwall of described centre bore.
Adopt the beneficial effect of technique scheme: the head of drill steel body studs with hard core rod, because mandrel segment hardness height, wear-resistant, anti-impact force is strong, it is pointed then to remain the drill steel head, the crushing efficiency height, drill steel mid portion hardness can suitably reduce under the prerequisite that head hardness satisfies, moderate getting final product, avoided the fracture that causes because of the hardness height, drill steel afterbody and hard core rod are two parts, its heat treatment is separately carried out, and the heat treatment of drill steel afterbody can be made into and require hardness, has avoided the too high or too low quality problems that cause of afterbody hardness.Adopt core inlaid drill rod can on average improve hydraulic crushing hammar drill rod 4-6 in application life doubly, obviously the economical with materials cost is increased economic efficiency.It is pointed that core inlaid drill rod in use remains the drill steel head, and stress is concentrated, and crushing effect is good, the crushing efficiency height.The bottom of in axial direction running through centre bore on the inwall of centre bore is provided with air discharge duct, when in centre bore, press-fiting hard core rod, be used to discharge the air in the fabrication hole, hard core rod cooperates with centre bore closely, has effectively guaranteed the reliability that drill steel hits the working end operation of rock.Use in traffic condition inconvenience area because hydraulic breaking hammer is most of, reduced the usage quantity of drill steel, reduced cost of transportation indirectly, shorten and reduced the replacing drill steel time, improved production efficiency greatly.
Below in conjunction with accompanying drawing specific embodiment of the utility model is described in further detail.
Description of drawings
Fig. 1 is the structural representation of core inlaid drill rod for hydraulic breaking hammer.
Fig. 2 is the A-A sectional view of Fig. 1.
The specific embodiment
As Fig. 1, core inlaid drill rod for hydraulic breaking hammer shown in 2, has drill steel body 2, the drill steel body has working end 3 of hitting rock and the strike end 1 that bears piston, the working end 3 of drill steel body has centre bore 4, be inlaid with hard rod core 5 in the centre bore 4, hard rod core 5 is tool steel plug or carbide alloy steel core bar, hard core rod 5 is an interference fit with centre bore 4, the bottom of in axial direction running through centre bore on the inwall of centre bore 4 is provided with air discharge duct 6, air discharge duct 6 belongs to technology groove, is used to discharge the air in the fabrication hole when press mounting tool steel core bar in centre bore.
Claims (3)
1, a kind of core inlaid drill rod for hydraulic breaking hammer has the drill steel body, and the drill steel body has working end of hitting rock and the strike end that bears piston, and it is characterized in that: the working end of described drill steel body is provided with centre bore, is inlaid with hard core rod in the centre bore.
2, core inlaid drill rod for hydraulic breaking hammer according to claim 1 is characterized in that: described hard core rod is tool steel plug or carbide alloy steel core bar.
3, core inlaid drill rod for hydraulic breaking hammer according to claim 1 is characterized in that: in axial direction be provided with air discharge duct on the inwall of described centre bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201482887U CN201241703Y (en) | 2008-07-31 | 2008-07-31 | Core inlaid drill rod for hydraulic breaking hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201482887U CN201241703Y (en) | 2008-07-31 | 2008-07-31 | Core inlaid drill rod for hydraulic breaking hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201241703Y true CN201241703Y (en) | 2009-05-20 |
Family
ID=40715000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201482887U Expired - Fee Related CN201241703Y (en) | 2008-07-31 | 2008-07-31 | Core inlaid drill rod for hydraulic breaking hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201241703Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107855497A (en) * | 2017-11-02 | 2018-03-30 | 成立 | A kind of multilayer carbonization quenching crushes and boring tool and its manufacture craft |
| CN107876737A (en) * | 2017-11-02 | 2018-04-06 | 成立 | Multilayer carbonization quenching crushes and boring tool and its manufacture craft |
-
2008
- 2008-07-31 CN CNU2008201482887U patent/CN201241703Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107855497A (en) * | 2017-11-02 | 2018-03-30 | 成立 | A kind of multilayer carbonization quenching crushes and boring tool and its manufacture craft |
| CN107876737A (en) * | 2017-11-02 | 2018-04-06 | 成立 | Multilayer carbonization quenching crushes and boring tool and its manufacture craft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Effective date of registration: 20090806 Pledge (preservation): Pledge |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Effective date of registration: 20090806 Pledge (preservation): Pledge |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090520 Termination date: 20100731 |