CN219673188U - Planetary reduction transmission device for power head of reverse circulation drilling machine - Google Patents
Planetary reduction transmission device for power head of reverse circulation drilling machine Download PDFInfo
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- CN219673188U CN219673188U CN202320767423.0U CN202320767423U CN219673188U CN 219673188 U CN219673188 U CN 219673188U CN 202320767423 U CN202320767423 U CN 202320767423U CN 219673188 U CN219673188 U CN 219673188U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 76
- 238000005553 drilling Methods 0.000 title abstract description 16
- 230000009347 mechanical transmission Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 5
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Abstract
The utility model discloses a planetary reduction transmission device for a reverse circulation drilling machine power head, which is suitable for the field of mechanical transmission and comprises a motor support matched with a power head motor and a shell integrally formed with the motor support, wherein a planetary reduction transmission unit is arranged in the shell and comprises a planetary wheel, a sun wheel and an inner gear ring, one side of the planetary wheel is meshed with the sun wheel, the other side of the planetary wheel is meshed with the inner gear ring, the planetary wheel is connected with the planetary support through a planetary shaft, the sun wheel is connected with an input key sleeve matched with a motor input shaft, and the planetary support drives a hollow shaft to rotate; the planetary gear set is adopted for speed reduction transmission, the planetary gear set is compact in structure and high in transmission efficiency, has stronger torque power output capability and higher transmission efficiency compared with the common fixed gear speed reduction transmission, and meanwhile, the whole transmission structure is integrated, so that the planetary gear set is convenient to replace and maintain.
Description
Technical Field
The utility model relates to the field of mechanical transmission, in particular to a planetary reduction transmission device for a power head of a reverse circulation drilling machine.
Background
At present, with the continuous increase of the investment of construction projects such as urban construction projects, expressway projects, high-speed railway projects, urban light rail projects, farmland hydraulic projects and the like in China, the application of a circulating engineering drilling machine is more and more wide.
As shown in fig. 3, the transmission device of the power head in the prior art comprises a first transmission shaft 24, a second transmission shaft 25 and a third transmission shaft 28 which are arranged in a box body 17, in the working process of the drilling machine, a power head motor 21 drives the first transmission shaft 24 to work through a coupler 22 and an input gear 23 connected with the coupler 22, the first transmission shaft 24 drives the second transmission shaft 25 to work through a first gear 26 meshed with the first transmission shaft, the second transmission shaft 25 drives the third transmission shaft 28 to work through a second gear 27 meshed with the second transmission shaft, the third transmission shaft 28 drives a hollow shaft 18 to rotate through a third gear 29 meshed with the third transmission shaft, and the hollow shaft 18 rotates to drive a drill rod to rotate so as to realize drilling of a drill bit. The torque requirement is realized through gear reduction transmission in the whole transmission process, the transmission structure is complex, the torque in the transmission process is increased, and the transmission efficiency is low. The number of combined seals between the core tube 15 and the hollow shaft 18 is large, and the consumption of auxiliary materials such as combined seals and gear oil in the box 17 is large.
The power head transmission structure is arranged in the box body 17, one transmission shaft, a gear meshed with the transmission shaft or a bearing arranged at the end part of the transmission shaft is damaged in the working process, and when maintenance and replacement are needed, the power head motor 21 is detached after the power head transmission structure is stopped, and the whole box body 17 is detached and then can be replaced and installed. The maintenance procedure is complex and the maintenance efficiency is low.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a planetary reduction transmission device for a power head of a reverse circulation drilling machine, wherein planetary gear reduction transmission is adopted in the whole transmission process, the power transmission efficiency is high, the torque power output capability is higher, the whole transmission structure is taken out from a box body to be integrated, and the planetary reduction transmission device is convenient to maintain.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the planetary reduction transmission unit comprises a planetary gear, a sun gear and an inner gear ring, wherein one side of the planetary gear is meshed with the sun gear, the other side of the planetary gear is meshed with the inner gear ring, the planetary gear is connected with the planetary carrier through a planetary shaft, the sun gear is connected with an input key sleeve matched with an input shaft of the motor, and the planetary carrier drives a hollow shaft to rotate.
The utility model further improves that: the planetary support is connected with a slewing bearing through an input gear shaft, and the slewing bearing is connected with a hollow shaft.
The utility model further improves that: the planetary reduction transmission unit is a single-stage planetary reduction gear set, the single-stage planetary reduction gear set comprises a first-stage planet wheel, a first-stage sun wheel and a first-stage annular gear, the first-stage planet wheel is connected with a first-stage planet carrier through a first-stage planet shaft, the first-stage sun wheel is connected with an input key sleeve, and the first-stage planet carrier drives a hollow shaft to rotate.
The utility model further improves that: the planetary reduction transmission unit is a two-stage planetary reduction gear set, the two-stage planetary reduction gear set comprises a single-stage planetary reduction gear set and a two-stage planetary reduction gear set connected with the single-stage planetary reduction gear set, the two-stage planetary reduction gear set comprises a two-stage planet wheel, a two-stage sun wheel and a two-stage annular gear, the two-stage planet wheel is connected with a two-stage planet carrier through a two-stage planet shaft, the two-stage sun wheel is connected with an input key sleeve, and the two-stage planet carrier is connected with the one-stage sun wheel.
The utility model further improves that: the primary planet carrier is connected with the slewing bearing through an input gear shaft.
The utility model further improves that: the input gear shaft and the slewing bearing are arranged in the box body.
Due to the adoption of the technical scheme, the beneficial effects obtained by the utility model are as follows:
the utility model adopts the planetary gear set for reducing transmission, can select a single planetary reduction gear set for reducing according to the speed ratio, and can also select two-stage (or more) planetary reduction gear sets for reducing, and has compact structure and high transmission efficiency. Compared with the common fixed gear reduction transmission, the planetary reducer has higher power transmission efficiency, stronger torque power output capability, and simultaneously integrates the whole transmission structure, is convenient to replace and is convenient to maintain.
Drawings
FIG. 1 is a schematic view of the internal cross-sectional structure of the present utility model;
FIG. 2 is a schematic diagram of the transmission process of the present utility model;
fig. 3 is a schematic view of a prior art structure of the present utility model.
1, a motor bracket; 2. inputting a key sleeve; 3. a secondary sun gear; 4. a secondary ring gear; 5. a secondary planet carrier; 6. a first-stage sun gear; 7. a primary ring gear; 8. a primary planet carrier; 9. a second-stage planetary gear; 10. a secondary planet shaft; 11. a primary planetary shaft; 12. a first-stage planet wheel; 15. Core tube 16, slewing bearing; 17. a case; 18. a hollow shaft; 19. a slow rod connecting flange; 20. an input gear shaft; 21. a power head motor; 22. a coupling; 23. an input gear; 24. a first drive shaft; 25. a second drive shaft; 26. a first gear; 27. a second gear; 28. a third drive shaft; 29. and a third gear.
Description of the embodiments
The utility model is further illustrated by the following examples:
the planetary reduction transmission device for the reverse circulation drilling machine power head comprises a motor support 1 matched with a power head motor 21 and a shell integrally formed with the motor support 1, wherein a planetary reduction transmission unit is arranged in the shell and adopts planetary gear set reduction transmission, the structure is compact, the transmission efficiency is high, and the torque requirement in the transmission process can be met. Compared with the common fixed gear reduction transmission, the planetary gear set has higher power transmission efficiency in speed reduction and stronger torque power output capability.
The planetary reduction transmission unit comprises a planetary gear, a sun gear and an inner gear ring, wherein the planetary gear rotates around the sun gear, one side of the planetary gear is meshed with the sun gear, the other side of the planetary gear is meshed with the inner gear ring, the planetary gear is connected with a planetary support through a planetary shaft, and the sun gear is connected with an input key sleeve 2 matched with an input shaft of a motor.
The planet gears carry torque power transmitted from the motor input shaft through the sun gear, and the planet carrier drives the hollow shaft 18 in rotation. The planet carrier is connected to the pivoting support 16 via an input gear shaft 20, and the pivoting support 16 is connected to the hollow shaft 18. The planetary support transmits power to the hollow shaft 18 through the input gear shaft 20 and the slewing bearing 16, and the hollow shaft 18 sequentially drives the slow rod, the drill rod and the drill bit to rotate through the slow rod connecting flange 19 so as to finish drilling of the drilling machine. The materials such as mud, sand and the like generated in the drilling process of the drill bit are brought to the ground under the action of a mud pump through a drill rod.
During normal operation, the running orbit of the planet wheel around the sun wheel is an annular inner gear ring in the shell. When the sun gear rotates under the drive of the motor input shaft, the meshing effect of the sun gear and the planet gear promotes the planet gear to generate autorotation; meanwhile, as the other side of the planet wheel is meshed with the annular inner gear ring in the shell, the planet wheel rolls on the annular inner gear ring along the same direction as the rotation of the sun wheel under the action of the rotation driving force, so as to form revolution motion rotating around the sun wheel. The planetary gear set generally has a plurality of planetary gears which are connected with a planetary carrier through planetary shafts, rotate around a central sun gear under the action of the rotation driving force of the sun gear, and jointly bear and transmit the output power of the speed reduction. Therefore, the rotational speed of the motor input shaft (i.e., the rotational speed of the sun gear) is higher than the load side output rotational speed (i.e., the speed at which the planet gears revolve around the sun gear).
The ratio between the rotational speed of the sun gear and the rotational speed of the planetary gears revolving around the sun gear is called the reduction ratio of planetary reduction transmission, which is called the speed ratio for short. In general, the reduction ratio of a planetary reduction transmission having a single planetary reduction gear set is usually between 5 and 12; planetary reduction transmissions having ratios exceeding 12 or more require the use of two (or more) planetary reduction gear sets. The single-stage planetary reduction gear set may be selected for reduction according to the speed ratio, or the two-stage (or more) planetary reduction gear set may be selected for reduction.
When the speed ratio is between 5 and 12, a single-stage planetary reduction gear set is selected for reduction, the planetary reduction transmission unit is a single-stage planetary reduction gear set, the single-stage planetary reduction gear set comprises a first-stage planet wheel 12, a first-stage sun wheel 6 and a first-stage annular gear 7, the first-stage planet wheel 12 is connected with a first-stage planet carrier 8 through a first-stage planet shaft 11, the first-stage sun wheel 6 is connected with an input key sleeve 2, and the first-stage planet carrier 8 drives a hollow shaft 18 to rotate. The motor input shaft drives the primary sun gear 6 to rotate through the input key sleeve 2, the primary planet gear 12 meshed with the primary sun gear 6 rotates, the primary planet gear 12 is connected with the primary planet carrier 8 through the primary planet shaft 12, and the primary planet carrier 8 rotates along with the rotation of the primary planet gear 12. The primary planet carrier 8 sequentially transmits power to the hollow shaft 18 through the input gear shaft 20 and the slewing bearing 16, and the hollow shaft 18 sequentially drives the slow rod, the drill rod and the drill bit to rotate through the slow rod connecting flange 19 so as to finish drilling of the drilling machine.
When the speed ratio is more than 12, a two-stage (or more) planetary reduction gear set is selected for reduction, and the two-stage planetary reduction gear set is taken as an example for reduction, as shown in fig. 1, the planetary reduction transmission unit is a two-stage planetary reduction gear set, the two-stage planetary reduction gear set comprises a single-stage planetary reduction gear set and a two-stage planetary reduction gear set connected with the single-stage planetary reduction gear set, the two-stage planetary reduction gear set comprises a two-stage planetary wheel 9, a two-stage sun wheel 3 and a two-stage annular gear 4, the two-stage planetary wheel 9 is connected with a two-stage planetary carrier 5 through a two-stage planetary shaft 10, the two-stage sun wheel 3 is connected with an input key sleeve 2, and the two-stage planetary carrier 5 is connected with a one-stage sun wheel 6. The motor input shaft drives the secondary sun wheel 3 to rotate through the input key sleeve 2, and meanwhile, the secondary planet wheel 9 meshed with the secondary sun wheel 3 rotates, and the secondary planet wheel 9 is fixed on the secondary planet carrier 5 through the secondary planet shaft 10, so that the secondary planet wheel 9 rotates and the secondary planet carrier 5 rotates at the same time, and primary speed reduction is completed; the secondary planet carrier 5 drives the primary sun wheel 6 to rotate, the primary planet wheel 12 rotates, the primary planet carrier 8 rotates in sequence, and secondary speed reduction transmission is completed.
As shown in fig. 2, the primary planet carrier 8 is connected to the slewing bearing 16 via an input gear shaft 20. The primary planet carrier 8 sequentially drives the hollow shaft 18 to rotate through the input gear shaft 20 and the slewing bearing 16, and the hollow shaft 18 rotates to drive the drill bit to rotate, so that the drilling of the reverse circulation drilling machine is completed.
The input gear shaft 20 and the slewing bearing 16 are both arranged in the box 17. Compared with the transmission structure in the prior art, the three transmission shafts and the three gears in the box 17 and the two bearings at the end part of each transmission shaft are replaced by the slewing bearing 16, so that the power transmission is completed, the transmission structure in the box 17 is fewer, the combined seal between the core tube 15 and the hollow shaft 18 is fewer in use quantity and better in tightness, the combined seal in the box 17, the consumption quantity of auxiliary materials such as gear oil and the like is fewer, meanwhile, the volume of the box 17 is smaller, the fault probability in the transmission process is lower, the structure is simpler, and the transmission efficiency is higher.
And the whole speed reduction transmission device is integrated, so that the structure is more compact, the transmission efficiency is high, the replacement is convenient after the fault, the maintenance efficiency is high, and the transmission structure fault and the maintenance process can be completed without disassembling the box body 17.
Finally, it should be noted that: the above examples are only illustrative for the clarity of the utility model and are not meant to be limiting in any way. Other variations or modifications of the above description will be apparent to those of ordinary skill in the art, and it is not intended to be exhaustive of all embodiments, and obvious variations or modifications of the utility model are intended to be within the scope of the utility model.
Claims (6)
1. A planetary reduction transmission for reverse circulation rig unit head, its characterized in that: the planetary speed reduction transmission unit is arranged in the shell and comprises a planet wheel, a sun wheel and an inner gear ring, one side of the planet wheel is meshed with the sun wheel, the other side of the planet wheel is meshed with the inner gear ring, the planet wheel is connected with the planet carrier through a planet shaft, the sun wheel is connected with an input key sleeve (2) matched with an input shaft of the motor, and the planet carrier drives a hollow shaft (18) to rotate.
2. A planetary reduction gear for a reverse circulation drill power head as defined in claim 1, wherein: the planet carrier is connected with a slewing bearing (16) through an input gear shaft (20), and the slewing bearing (16) is connected with a hollow shaft (18).
3. A planetary reduction gear for a reverse circulation drill power head as defined in claim 1, wherein: the planetary reduction transmission unit is a single-stage planetary reduction gear set, the single-stage planetary reduction gear set comprises a first-stage planet wheel (12), a first-stage sun wheel (6) and a first-stage annular gear (7), the first-stage planet wheel (12) is connected with a first-stage planet carrier (8) through a first-stage planet shaft (11), the first-stage sun wheel (6) is connected with an input key sleeve (2), and the first-stage planet carrier (8) drives a hollow shaft (18) to rotate.
4. A planetary reduction gear for a reverse circulation drill power head as defined in claim 3, wherein: the planetary reduction transmission unit is a two-stage planetary reduction gear set, the two-stage planetary reduction gear set comprises a single-stage planetary reduction gear set and a two-stage planetary reduction gear set connected with the single-stage planetary reduction gear set, the two-stage planetary reduction gear set comprises a two-stage planetary gear (9), a two-stage sun gear (3) and a two-stage annular gear (4), the two-stage planetary gear (9) is connected with a two-stage planetary support (5) through a two-stage planetary shaft (10), the two-stage sun gear (3) is connected with an input key sleeve (2), and the two-stage planetary support (5) is connected with a one-stage sun gear (6).
5. A planetary reduction gear for a reverse circulation drill power head as claimed in claim 3 or 4, wherein: the primary planet carrier (8) is connected with the slewing bearing (16) through an input gear shaft (20).
6. A planetary reduction gear for a reverse circulation drill power head as defined in claim 5, wherein: the input gear shaft (20) and the slewing bearing (16) are arranged in the box body (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320767423.0U CN219673188U (en) | 2023-04-10 | 2023-04-10 | Planetary reduction transmission device for power head of reverse circulation drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320767423.0U CN219673188U (en) | 2023-04-10 | 2023-04-10 | Planetary reduction transmission device for power head of reverse circulation drilling machine |
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| Publication Number | Publication Date |
|---|---|
| CN219673188U true CN219673188U (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320767423.0U Active CN219673188U (en) | 2023-04-10 | 2023-04-10 | Planetary reduction transmission device for power head of reverse circulation drilling machine |
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| Country | Link |
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| CN (1) | CN219673188U (en) |
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2023
- 2023-04-10 CN CN202320767423.0U patent/CN219673188U/en active Active
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