CN201137670Y - Outer gyration rock drill gearing device - Google Patents
Outer gyration rock drill gearing device Download PDFInfo
- Publication number
- CN201137670Y CN201137670Y CNU2007201928766U CN200720192876U CN201137670Y CN 201137670 Y CN201137670 Y CN 201137670Y CN U2007201928766 U CNU2007201928766 U CN U2007201928766U CN 200720192876 U CN200720192876 U CN 200720192876U CN 201137670 Y CN201137670 Y CN 201137670Y
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- CN
- China
- Prior art keywords
- spline
- pair
- gear wheel
- copper alloy
- lining
- 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 driving device of an independent rotary drill, which comprises a gear pair and a spline pair, wherein the gear pair is formed by a small gear wheel and a big gear wheel which are connected with a motor, a copper alloy eccentric lining with an inner spline is closely fit in the big gear wheel, and is positioned by a straight pin (or a taper bolt), and the spline pair is formed by the copper alloy eccentric lining with an inner spline and a shank adapter with an outer spline. Since the turning dynamic which is provided by the motor drives the big gear wheel to rotate through a small gear which is connected with the motor, since the copper alloy eccentric lining is matched with the inner hole of the big gear wheel, and is positioned by the straight pin, and the copper alloy eccentric lining can rotate along the big gear wheel, and the turning dynamic is delivered to the shank adapter through the inner spline of the copper alloy eccentric lining and the shank adapter of the inner spline, thereby finishing the task of rock drilling. The driving device reduces abrasion, improves reliability, and since the structures of component parts are simple, the problems of big equipment investment, high production cost and the like which are caused by complex component part structure are avoided, and the driving device has obvious economic and social benefits.
Description
Technical field
The utility model relates to a kind of transmission device that is used for rotary rock drill.
Background technique
The transmission device of rotary rock drill mainly is made of jointly gear pair and spline pair.Gear pair is made up of the gearwheel of the small gear that connects with motor and band internal spline or endoporus close-fitting band internal spline lining, spline pair is formed by the internal spline of gearwheel or with the lining of the band internal spline of gearwheel endoporus close-fitting and the bit shank of band external splines, effect by gear pair and spline pair, the rotary motive power that is provided by motor can be passed to bit shank, thereby finish rock drilling work, at present, the gearwheel of rotary rock drill adopts the structure of external gear band internal spline more, and parts depreciation is fast, poor reliability, maintenance cost height, machine heating value are big; And employing gearwheel endoporus close-fitting band internal spline bush structure, because of its lagging material is an alloyed steel, still can't solve the machine heating problem, and some lining becomes several sections symmetrical arc surfaces with the registration interface designs of gearwheel endoporus, structure is too complicated, the cylindrical of lining and the endoporus of gearwheel must be processed with special device, increased equipment input and cost of production.
Summary of the invention
Task of the present utility model is: the transmission device that a kind of rotary rock drill is provided, it both can solve that present rotary rock drill parts depreciation is fast, poor reliability, maintenance cost height, problem that the machine heating value is big, had solved the problem that design of part complexity, equipment have high input, cost of production is high again.
The purpose of this utility model is achieved through the following technical solutions: a kind of transmission device of rotary rock drill is made up of gear pair and spline pair.Gear pair is made up of small gear that connects with motor and gearwheel; Have the Cuprum alloy eccentric bush of internal spline one of gearwheel endoporus close-fitting, and with straight pin (or taper pin) location, spline pair is made up of the Cuprum alloy eccentric bush of band internal spline and the bit shank of band external splines promptly.The rotary motive power that provides by motor, by the small gear that connects with motor, the revolution of drive gearwheel, because Cuprum alloy eccentric bush and gearwheel endoporus close-fitting, and locate with straight pin, the Cuprum alloy eccentric bush can rotate with gearwheel, by the internal spline of Cuprum alloy eccentric bush and the external splines of bit shank rotary motive power is delivered to bit shank at last, thereby finishes the rock drilling task.
The utility model adopts the Cuprum alloy eccentric bush that the friction of steel and copper is changed in the friction of steel and steel, has not only reduced wearing and tearing, has improved reliability, has solved the big problem of machine heating value simultaneously; Internal spline and cylindrical design because of the Cuprum alloy eccentric bush has certain eccentric size again, solved the problem of lining and gearwheel matching loose, improved the reliability of transmission device; More, avoided having remarkable economical and social benefit because of problems such as the complicated equipment that brings of design of part has high input, cost of production height because of design of part is simple.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 be Figure 1A-A to sectional view;
Fig. 3 be Fig. 2 B-B to sectional view.
Embodiment
As shown in Figure 1, 2, the transmission device of the rotary rock drill that the utility model relates to is made up of gear pair and spline pair.Gear pair is made up of small gear 1 and gearwheel 2, and gearwheel 2 endoporus close-fittings have the Cuprum alloy eccentric bush 3 of internal spline, and 3 of gearwheel 2 and Cuprum alloy eccentric bushs are with straight pin 4 location.The Cuprum alloy eccentric bush 3 of band internal spline is formed spline pair with the bit shank 5 of band external splines, and the internal spline of lining 3 and excircle eccentricity are concentric with the cylindrical of gearwheel 2.
When rotary rock drill is worked, the rotary motive power that provides by motor, by the small gear 1 that connects with motor, drive gearwheel 2 revolutions, since the endoporus close-fitting of Cuprum alloy eccentric bush 3 and gearwheel 2, and straight pin (or taper pin) 4 location are arranged, and Cuprum alloy eccentric bush 3 can rotate with gearwheel 2, by the internal spline of Cuprum alloy eccentric bush 3 and the external splines of bit shank 5 rotary motive power is delivered to bit shank 5 at last, thereby finishes rock drilling work.
Claims (3)
1. the transmission device of a rotary rock drill, form jointly by gear pair and spline pair, gear pair is made up of small gear (1) and gearwheel (2), spline pair is made up of at the lining that has internal spline (3) and the bit shank (5) of gearwheel (2) endoporus close-fitting, the lining (3) that it is characterized in that having internal spline is the Cuprum alloy eccentric bush, gearwheel (2) and described lining (3) close-fitting, described lining (3) positions by positioning device.
2. the transmission device of a kind of rotary rock drill according to claim 1 is characterized in that described positioning device is straight pin (4).
3. the transmission device of a kind of rotary rock drill according to claim 1 is characterized in that the internal spline and the excircle eccentricity of described lining (3), and is concentric with the cylindrical of described gearwheel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201928766U CN201137670Y (en) | 2007-11-29 | 2007-11-29 | Outer gyration rock drill gearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201928766U CN201137670Y (en) | 2007-11-29 | 2007-11-29 | Outer gyration rock drill gearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201137670Y true CN201137670Y (en) | 2008-10-22 |
Family
ID=40038357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201928766U Expired - Fee Related CN201137670Y (en) | 2007-11-29 | 2007-11-29 | Outer gyration rock drill gearing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201137670Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121349A (en) * | 2011-03-11 | 2011-07-13 | 湖南恒至凿岩科技有限公司 | High-order elliptic profile connected hammer drill rotational mechanism |
| CN102155153A (en) * | 2011-03-11 | 2011-08-17 | 湖南恒至凿岩科技有限公司 | Rock drilling rotational mechanism connected with tooth profile molding surface of roller movable-tooth inner gear of eccentric wheel push rod |
| CN113464062A (en) * | 2021-07-12 | 2021-10-01 | 江西沃斯德凿岩液压有限公司 | Rock drill |
| CN116221363A (en) * | 2023-04-12 | 2023-06-06 | 徐州徐工基础工程机械有限公司 | Sandwich type composite structure driving sleeve of rock drill and preparation method thereof |
-
2007
- 2007-11-29 CN CNU2007201928766U patent/CN201137670Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121349A (en) * | 2011-03-11 | 2011-07-13 | 湖南恒至凿岩科技有限公司 | High-order elliptic profile connected hammer drill rotational mechanism |
| CN102155153A (en) * | 2011-03-11 | 2011-08-17 | 湖南恒至凿岩科技有限公司 | Rock drilling rotational mechanism connected with tooth profile molding surface of roller movable-tooth inner gear of eccentric wheel push rod |
| CN113464062A (en) * | 2021-07-12 | 2021-10-01 | 江西沃斯德凿岩液压有限公司 | Rock drill |
| CN116221363A (en) * | 2023-04-12 | 2023-06-06 | 徐州徐工基础工程机械有限公司 | Sandwich type composite structure driving sleeve of rock drill and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081022 Termination date: 20161129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |