CN201915856U - Drill rod and drill bit structure for rock drilling machine - Google Patents
Drill rod and drill bit structure for rock drilling machine Download PDFInfo
- Publication number
- CN201915856U CN201915856U CN2010206782052U CN201020678205U CN201915856U CN 201915856 U CN201915856 U CN 201915856U CN 2010206782052 U CN2010206782052 U CN 2010206782052U CN 201020678205 U CN201020678205 U CN 201020678205U CN 201915856 U CN201915856 U CN 201915856U
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- face
- drill
- drill steel
- bore bit
- drill rod
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Abstract
The utility model discloses a drill rod and drill bit structure for a rock drilling machine. The drill rod and drill bit structure comprises a drill rod (1) and a drill bit (2), wherein a screw (1.1) is arranged at the front section part of the drill rod (1) and connected with inner threads of the drill bit (2), a lug boss (1.2) is arranged on the drill rod (1), and the distance (L1) between the front end face of the lug boss (1.2) of the drill rod (1) and the top end face of the screw (1.1) is equal to or similar to the distance (L2) between the bottom end face of the inner thread and the top end face of the inner thread of the drill bit (2). The drill rod and drill bit structure has the advantages of long service life, good structural performance, simple structure and reliable working performance.
Description
Technical field
The utility model relates to a kind of hammer drill with drill steel bore bit structure, belongs to hammer drill drilling tool technical field.
Background technology
At present, employed drill steel and bore bit structure on the existing hammer drill, general all is to produce the screw rod that matches with the internal thread of bore bit at the front end of drill steel, drill steel major diameter of thread and drill steel body of rod diameter basically identical, its duty is for impacting and revolution, the drill steel of this structure and bore bit are when work, its ballistic work and rotary torque mainly transmit by be threaded part and drill steel end, its mating part is under the situation of constantly high-frequency vibration, also to drive bore bit and carry out gyration by drill steel, the bore bit internal thread bottom, drill steel bar external screw thread end of its drill steel and the part that is threaded are constantly impacted and squeezing action, cause the deformed damaged of drill steel end and threaded portion, because the screw rod face area of drill steel is less, impact pressure is very big, and arrive the certain deformation amount part that is threaded later on and do not have stopping means to prevent the continuation wearing and tearing of screw thread, therefore drill steel and bore bit are easy to damage in the process of using, and its application life is shorter.Therefore, drill steel and the bore bit structure used of existing hammer drill still is not ideal enough.
Summary of the invention
The purpose of this utility model is: provide a kind of hammer drill drill steel bore bit structure simple in structure, that application life is long, to overcome the deficiencies in the prior art.
The utility model is achieved in that a kind of hammer drill of the present utility model drill steel bore bit structure, comprise drill steel and bore bit, leading portion at drill steel partly is provided with the screw rod that is connected with the internal thread of bore bit, on drill steel, be provided with boss, and the front end face of the boss of drill steel is equal or close to the distance of its internal thread top end face with the internal thread bottom face of bore bit to the distance of screw tip face.
When the distance of the front end face of the boss of above-mentioned drill steel to the internal thread bottom face of the distance of screw tip face and bore bit to its internal thread top end face was close, its difference was no more than ± and 0.5 millimeter.
Owing to adopted technique scheme, the utility model is partly produced a boss at the leading portion of drill steel, and the distance of front end face to the internal thread bottom face of the distance of its screw tip face and bore bit to its internal thread top end face of the boss of drill steel is equated or close.Like this in the process of using, after as long as drill steel produces small distortion, the top end face of the end face of its boss and drill steel screw rod will contact with bottom face with the top end face of bore bit internal thread simultaneously simultaneously, so just increased contact area greatly, thereby reduced the impact pressure of being born on the contact surface, and effectively define the wear condition of screw thread, thereby also just prolonged the application life of drill steel and bore bit.So the utility model is compared with prior art, the utility model not only has long service life, advantage that structural performance is good, but also have simple in structure, the advantage of reliable working performance.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Description of reference numerals: the 1-drill steel, the 1.1-screw rod, the 1.2-boss, the 2-bore bit, the front end face of L1-drill steel boss is to the distance of screw tip face, and L2-bore bit internal thread bottom face is to the distance of internal thread top end face.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment of the present utility model: a kind of hammer drill of the present utility model with drill steel bore bit structural representation as shown in Figure 1, the utility model comprises drill steel 1 and bore bit 2, drill steel 1 and bore bit 2 can directly adopt existing drill steel, bore bit material, during making, partly produce the screw rod 1.1 that is connected with the internal thread of bore bit 2 at the leading portion of drill steel 1, simultaneously, on drill steel 1, produce boss 1.2, and the distance L 2 of front end face to the internal thread bottom face of the distance L 1 of screw rod 1.1 top end faces and bore bit 2 to its internal thread top end face of the boss 1.2 of drill steel 1 equated or close; When the front end face of the boss 1.2 of drill steel 1 distance L 2 to the internal thread bottom face of the distance L 1 of screw rod 1.1 top end faces and bore bit 2 to its internal thread top end face being made into when close, its akin length difference is controlled at and is no more than ± 0.5 millimeter.
Claims (2)
1. a hammer drill is with drill steel bore bit structure, comprise drill steel (1) and bore bit (2), leading portion at drill steel (1) partly is provided with the screw rod (1.1) that is connected with the internal thread of bore bit (2), it is characterized in that: on drill steel (1), be provided with boss (1.2), and the front end face of the boss (1.2) of drill steel (1) is equal or close to the distance (L2) of its internal thread top end face with the internal thread bottom face of bore bit (2) to the distance (L1) of screw rod (1.1) top end face.
2. hammer drill according to claim 1 drill steel bore bit structure, it is characterized in that: when the distance (L2) of the front end face of the boss (1.2) of drill steel (1) to the internal thread bottom face of the distance (L1) of screw rod (1.1) top end face and bore bit (2) to its internal thread top end face was close, its difference was no more than ± and 0.5 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206782052U CN201915856U (en) | 2010-12-24 | 2010-12-24 | Drill rod and drill bit structure for rock drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206782052U CN201915856U (en) | 2010-12-24 | 2010-12-24 | Drill rod and drill bit structure for rock drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201915856U true CN201915856U (en) | 2011-08-03 |
Family
ID=44415658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206782052U Expired - Lifetime CN201915856U (en) | 2010-12-24 | 2010-12-24 | Drill rod and drill bit structure for rock drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201915856U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443032A (en) * | 2015-11-27 | 2016-03-30 | 湖南恒至凿岩科技股份有限公司 | Efficient drill tool of rock drill |
| CN105888568A (en) * | 2015-01-16 | 2016-08-24 | 覃海云 | Simple appliance capable of preventing drill rod from cracking and hurting people |
| CN106194044A (en) * | 2016-08-31 | 2016-12-07 | 王华彬 | NEW TYPE OF COMPOSITE drill steel |
-
2010
- 2010-12-24 CN CN2010206782052U patent/CN201915856U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888568A (en) * | 2015-01-16 | 2016-08-24 | 覃海云 | Simple appliance capable of preventing drill rod from cracking and hurting people |
| CN105888568B (en) * | 2015-01-16 | 2020-04-17 | 覃海云 | Simple appliance for preventing drill rod from breaking and hurting people |
| CN105443032A (en) * | 2015-11-27 | 2016-03-30 | 湖南恒至凿岩科技股份有限公司 | Efficient drill tool of rock drill |
| CN105443032B (en) * | 2015-11-27 | 2018-04-03 | 湖南文理学院 | A kind of efficient rock drilling machine drill tool |
| CN106194044A (en) * | 2016-08-31 | 2016-12-07 | 王华彬 | NEW TYPE OF COMPOSITE drill steel |
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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 |
Denomination of utility model: Drill rod and drill bit structure for rock drilling machine Effective date of registration: 20151120 Granted publication date: 20110803 Pledgee: Bank of Guiyang Limited by Share Ltd high tech branch Pledgor: Guiyang Jiesheng Tech-Ind Development Co., Ltd. Registration number: 2015990001027 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 550018 Guizhou city in Guiyang Province, Guiyang national hi tech Industrial Development Zone Xintian Magicstor park high tech Industrial Park Patentee after: Czech Republic, Guizhou drilling tools Limited by Share Ltd Address before: 11, No. 550004, Baoshan North Road, Guizhou, Guiyang, 213 building, long union building Patentee before: Guiyang Jiesheng Tech-Ind Development Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110803 |
|
| CX01 | Expiry of patent term |