CN203129947U - Down-the-hole drill - Google Patents
Down-the-hole drill Download PDFInfo
- Publication number
- CN203129947U CN203129947U CN 201220558289 CN201220558289U CN203129947U CN 203129947 U CN203129947 U CN 203129947U CN 201220558289 CN201220558289 CN 201220558289 CN 201220558289 U CN201220558289 U CN 201220558289U CN 203129947 U CN203129947 U CN 203129947U
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- CN
- China
- Prior art keywords
- planetary
- output shaft
- reducer
- wheel carrier
- hole drill
- 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.)
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Abstract
The utility model discloses a down-the-hole drill which comprises a speed reducer. The speed reducer comprises an outer shell, an input shaft and an output shaft. An input shaft of a gearbox is connected with an output end of a motor, the speed reducer is a planetary reducer, an input end of the motor is connected with a sun wheel of the planetary reducer, two planetary gears are meshed with the sun wheel, the two planetary gears are eternally meshed with an inner gear ring which is placed on an inner ring of the outer shell of the speed reducer, and the inner gear ring synchronously rotates with the planetary gears in a revolution mode and is connected with the output shaft. A planetary gear frame is of a barrel-shaped structure, one side, close to an input end of the speed reducer, of the planetary gear frame is fixedly connected with the planetary gears through a pin shaft and a bearing, and the output shaft of the speed reducer is connected with the interior of the planetary gear frame through a key. Compared with the prior art, the down-the-hole drill has the advantages of being large in reduction ratio, strong in bearing strength and small in size.
Description
Technical field
The utility model relates to a kind of down-the-hole drill, is specially a kind of planetary reduction gear down-the-hole drill.
Background technology
The essence of down-the-hole drill down-the-hole drilling is that impactor is slipped in the hole, to reduce because drill steel transmits the energy loss that ballistic work was caused, thereby reduce hole depth to the influence of rock penetration performance.The rock drilling equipment of down-the-hole drilling is down-the-hole drill.
The power of down-the-hole drill is power with the motor, because of rotating speed of motor than higher, must slow down with reducer, but present reducer mostly is common gear reducer, have that speed reducing ratio is little, torque forces is big, bulky problem.
Summary of the invention
The utility model is at existing down-the-hole drill drawback, a kind of down-the-hole drill that provides, this down-the-hole drill adopts planetary reduction gear, and fixes with output shaft by key and bolt, have that speed reducing ratio is big, carrying by force, advantage that volume is little.
For achieving the above object, the technical scheme that the utility model adopts is as follows:
A kind of down-the-hole drill, comprise reducer, described reducer comprises shell and input, output shaft, the power shaft of gearbox connects the output of motor, described reducer is planetary reduction gear, and the input of motor connects the sun gear of planetary reduction gear, is engaged with at least two planetary gears with sun gear, the planetary gear external toothing has the ring gear that is fixed in the reducer shell, and revolving round the sun synchronously with planetary gear is connected output shaft.
Further, described planetary wheel carrier is tubular structure, and its side near the reducer input connects planetary gear by bearing pin and bearing fixing, and the inside of planetary wheel carrier is with the output shaft of reducer by key.
Further, described planetary wheel carrier is connected with the output shaft bolt.
Further, the end of the close output shaft of described planetary wheel carrier is provided with the wheel carrier boss, and output shaft is provided with the output shaft boss corresponding with the wheel carrier boss, and two boss are provided with bolt hole, bolt bolt in the bolt hole.
Further, described planetary gear is two, and it is distributed in the pinion frame both sides.
Further, described ring gear is the internal tooth snare, and it is set on the shell.
Further, the axis projection of described planetary wheel carrier is elliptical shape.
Further, described key is spline or flat key.
Operating principle of the present utility model and beneficial effect show:
The utility model adopts planetary reduction gear as the reducer of this device, and power shaft is fixed on the reducer shell as sun gear link, gear ring, and planetary gear connects output shaft as output.Characteristics such as it is little to have physical dimension, and output torque is big, and speed ratio is big, efficient is high, performance is safe and reliable.
Planetary gear is fixed on the two ends of planetary wheel carrier, and planetary wheel carrier is tubular structure then, can realize that like this it cooperates with the axle sleeve of output shaft, thereby the use of fit key realizes the purpose of stable output.
Planetary wheel carrier is provided with boss with output shaft at an end that contacts, and is similar to the shape of the shaft shoulder, at this boss bolt hole is set then, fixes thereby by bolt both are carried out secondary, has further strengthened connection effect between the two.
Ring gear adopts and the shell independent design, during use, ring gear is set on the shell get final product, has reduced the cost of production of shell on the one hand, secondly when planetary reduction gear damages, as long as the parts of replacing damage just can, needn't integral replacing.
Thereby the planet carrier oval structure can improve the inertia of planet carrier like this, thereby improves its torsion.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
As shown in Figure 1, a kind of down-the-hole drill comprises reducer, and described reducer comprises shell 1 and input, output shaft, and input shaft of speed reducer connects the output of motor.
Described reducer is planetary reduction gear, and it comprises: the sun gear 2 of supporting engagement, planetary gear 3 and ring gear 4.Wherein: sun gear 2 connect motors input, be engaged with two planetary gears 3 with sun gear 2, planetary gear 3 external toothings have the ring gear 4 of being located at reducer shell inner ring, are connected output shaft 6 with planetary gear 3 revolution synchronously.
Described planetary wheel carrier 5 is that tubular structure and its axis projection are ellipticity, tubular planetary wheel carrier 5 connects planetary gear 3 near the two ends of a side of reducer input by bearing pin and bearing fixing, and the inside of planetary wheel carrier 5 is by spline or the sheathed output shaft 6 that is connected with reducer of flat key.
The other end of planetary wheel carrier 5 is provided with the wheel carrier boss, the corresponding output boss that is provided with the wheel carrier boss of output shaft 6, and two boss are provided with bolt hole in the axial direction, are provided with bolt 7 in the bolt hole, and it carries out bolt with output shaft and planetary wheel carrier.
Described ring gear 4 is the internal tooth snare, and it is set on the shell.
Claims (8)
1. down-the-hole drill, comprise reducer, described reducer comprises shell and input, output shaft, the power shaft of gearbox connects the output of motor, and it is characterized in that: described reducer is planetary reduction gear, and it comprises planetary wheel carrier, the input of motor connects the sun gear of planetary reduction gear, be engaged with at least two planetary gears with sun gear, the planetary gear external toothing has the ring gear that is fixed in the reducer shell, and revolving round the sun synchronously with planetary gear is connected output shaft.
2. down-the-hole drill according to claim 1, it is characterized in that: described planetary wheel carrier is tubular structure, its side near the reducer input connects planetary gear by bearing pin and bearing fixing, and the inside of planetary wheel carrier is with the output shaft of reducer by key.
3. down-the-hole drill according to claim 1 and 2, it is characterized in that: described planetary wheel carrier is connected with the output shaft bolt.
4. down-the-hole drill according to claim 3, it is characterized in that: the end of the close output shaft of described planetary wheel carrier is provided with the wheel carrier boss, output shaft is provided with the output shaft boss corresponding with the wheel carrier boss, and two boss are provided with bolt hole, bolt bolt in the bolt hole.
5. down-the-hole drill according to claim 2, it is characterized in that: described planetary gear is two, and it is distributed in the pinion frame both sides.
6. down-the-hole drill according to claim 1, it is characterized in that: described ring gear is the internal tooth snare, and it is set on the shell.
7. down-the-hole drill according to claim 1 and 2, it is characterized in that: the axis projection of described planetary wheel carrier is elliptical shape.
8. down-the-hole drill according to claim 2, it is characterized in that: described key is spline or flat key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220558289 CN203129947U (en) | 2012-10-29 | 2012-10-29 | Down-the-hole drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220558289 CN203129947U (en) | 2012-10-29 | 2012-10-29 | Down-the-hole drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203129947U true CN203129947U (en) | 2013-08-14 |
Family
ID=48937939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220558289 Expired - Fee Related CN203129947U (en) | 2012-10-29 | 2012-10-29 | Down-the-hole drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203129947U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485780A (en) * | 2013-09-05 | 2014-01-01 | 中传重型装备有限公司 | Insertion board star-wheel driving device in heading machine and application thereof |
| WO2016127472A1 (en) * | 2015-02-11 | 2016-08-18 | 徐新生 | Speed change gear box applicable to battery-type electric tool |
| CN113818802A (en) * | 2021-09-17 | 2021-12-21 | 贵州航天天马机电科技有限公司 | Driving device for open-air down-the-hole drill |
| CN114483918A (en) * | 2022-01-24 | 2022-05-13 | 浙江炜粒传动有限公司 | Planetary reducer |
-
2012
- 2012-10-29 CN CN 201220558289 patent/CN203129947U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485780A (en) * | 2013-09-05 | 2014-01-01 | 中传重型装备有限公司 | Insertion board star-wheel driving device in heading machine and application thereof |
| CN103485780B (en) * | 2013-09-05 | 2015-12-23 | 中传重型装备有限公司 | Star wheel driving device for shovel board and application thereof in development machine |
| WO2016127472A1 (en) * | 2015-02-11 | 2016-08-18 | 徐新生 | Speed change gear box applicable to battery-type electric tool |
| CN113818802A (en) * | 2021-09-17 | 2021-12-21 | 贵州航天天马机电科技有限公司 | Driving device for open-air down-the-hole drill |
| CN114483918A (en) * | 2022-01-24 | 2022-05-13 | 浙江炜粒传动有限公司 | Planetary reducer |
| CN114483918B (en) * | 2022-01-24 | 2024-02-13 | 浙江炜粒传动有限公司 | Planetary reducer |
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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: 20130814 Termination date: 20151029 |
|
| EXPY | Termination of patent right or utility model |