CN108180281B - Split type planet carrier adopted in torque increasing structure of power head of rotary drilling rig - Google Patents
Split type planet carrier adopted in torque increasing structure of power head of rotary drilling rig Download PDFInfo
- Publication number
- CN108180281B CN108180281B CN201810161274.7A CN201810161274A CN108180281B CN 108180281 B CN108180281 B CN 108180281B CN 201810161274 A CN201810161274 A CN 201810161274A CN 108180281 B CN108180281 B CN 108180281B
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- sun gear
- power head
- frame body
- shaft
- torque increasing
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- 238000005553 drilling Methods 0.000 title claims abstract description 36
- 238000007789 sealing Methods 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 7
- 230000009467 reduction Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 10
- 238000012545 processing Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 13
- 238000009434 installation Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/082—Planet carriers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention discloses a split type planet carrier adopted in a torque increasing structure of a power head of a rotary drilling rig, which comprises an upper carrier body, a lower carrier body and a plurality of connecting shafts for connecting the upper carrier body and the lower carrier body; the upper frame body and the lower frame body are provided with a central hole for accommodating a sun gear shaft; the space formed between adjacent connecting shafts is used for accommodating the planet gears; the upper frame body and the lower frame body are respectively and correspondingly provided with a mounting hole for accommodating a planet wheel pin shaft, and the planet wheel is mounted in a space formed between adjacent connecting shafts through the planet wheel pin shaft. The planetary carrier is arranged on the power head torque increasing device on the rotary drilling rig, so that the output torque is improved, the weight of the planetary carrier is reduced, the dead weight of the power head torque increasing device is reduced, the mounting hole for accommodating the planetary gear is prevented from being formed in the planetary carrier, the processing difficulty and the production cost are reduced, the mounting hole for fixing the planetary gear pin shaft is more convenient to process, and the control of the fit tolerance, the clearance and the assembly precision of the mounting hole is ensured.
Description
Technical Field
The invention relates to the field of drilling equipment for surface or underground hole forming in foundation engineering construction, in particular to a rotary drilling rig.
Background
The rotary drilling rig is a pore-forming machine for the construction of concrete filling piles in pile foundation engineering. In recent years, with the rapid development of economic construction in China, the rotary drilling rig is increasingly widely applied to projects such as highways, railways, cross-river cross-sea bridges, urban rail transit and the like at home and abroad.
Under normal conditions, the rotary drilling rig adopts a wet rotary drilling method of static mud dado or a dry rotary drilling method without stabilizing liquid, and can adapt to the construction of soil layers and soft and hard layers in most areas by matching with different drilling tools. However, when the construction is performed on unstable strata such as silt, quicksand, backfill and karst cave, or on areas such as Europe and America where the use of mud is not allowed, a full rotary drilling machine, a pipe twisting machine or a crawler crane is often required to be additionally adopted for full casing construction, a large amount of additional equipment is added, and meanwhile, huge assembly and disassembly working amount is brought to the site, so that the problems of high construction cost, low efficiency and the like are caused. The full-sleeve rotary drilling method is different from the wet rotary drilling method and the dry rotary drilling method in that the full-sleeve rotary drilling method adopts auxiliary equipment to embed a part of or full-drilling-depth steel sleeve for wall protection, so that the adaptability of the rotary drilling rig to the stratum is improved. If the rotary drilling rig power head is utilized for complete casing construction, a large amount of auxiliary equipment and field installation workload can be reduced, and the construction efficiency is high, and the method is economical and convenient.
The torque of the power head of the existing rotary drilling rig can only meet the requirement of embedding a sleeve with a small diameter or a shallower depth, but cannot meet most engineering requirements. In actual construction, the problems of non-ideal construction efficiency, large equipment damage degree and even incapability of realizing sleeve driving exist.
Disclosure of Invention
Aiming at the problems existing in the existing engineering construction, the invention provides the split type planet carrier adopted in the torque increasing structure of the power head of the rotary drilling rig, which can meet the requirements of processing and assembling precision, is convenient for processing, assembling and disassembling the torque increasing structure of the power head, and reduces the weight.
In order to achieve the purpose, the invention provides the split type planet carrier adopted in the torque increasing structure of the power head of the rotary drilling rig.
A split type planet carrier adopted in a torque increasing structure of a power head of a rotary drilling rig is characterized in that,
comprises an upper frame body, a lower frame body and a plurality of connecting shafts for connecting the upper frame body and the lower frame body;
the upper frame body and the lower frame body are provided with a central hole for accommodating a sun gear shaft;
the space formed between adjacent connecting shafts is used for accommodating a planet wheel meshed with a sun wheel on a sun wheel shaft;
the upper frame body and the lower frame body are respectively and correspondingly provided with a mounting hole for accommodating a planet wheel pin shaft, and the planet wheel is mounted in a space formed between adjacent connecting shafts through the planet wheel pin shaft.
The mounting hole surrounds the central hole.
The mounting holes are evenly around the center hole.
An inner ring surrounded by a plurality of planet gears is meshed with the sun gear, and an outer ring is meshed with the gear ring.
The sun gear shaft is a hollow shaft, and a space for vertically passing through the drill rod is formed in the sun gear shaft.
The sun gear shaft is a hollow shaft, the inner wall of the sun gear shaft is provided with a reinforcing section, the wall thickness of the reinforcing section is larger than that of the inner wall of other positions, and the reinforcing section is positioned at the position where the planet wheel is matched with the sun gear or the position where the planet wheel is matched with the gear ring.
The hollow shaft inner diameter of the sun gear shaft ranges from 300 mm to 800 mm.
The gear ring is clamped and fixed by the upper box body and the lower box body.
The upper end face of the upper frame body and the lower end face of the lower frame body are respectively provided with an upper connecting end and a lower connecting end which can be connected with a sleeve pipe to be buried.
An inner bearing sleeved on the sun gear shaft is respectively clamped and arranged between the inner side of the upper connecting end and/or the lower connecting end and the sun gear shaft, and the inner bearing is axially fixed through an inner sealing seat connected with the upper connecting end and/or the lower connecting end;
an outer bearing sleeved on the upper connecting end and/or the lower connecting end is respectively clamped between the outer side of the upper connecting end and/or the lower connecting end and the upper box body and/or the lower box body, and the outer bearing is axially fixed through an outer sealing seat connected to the upper box body and/or the lower box body.
The invention has the beneficial effects that:
the split type planet carrier is arranged on the power head torque increasing device on the rotary drilling rig, so that the output torque is improved, the weight of the planet carrier is reduced, the dead weight of the power head torque increasing device is reduced, the installation hole for accommodating the planet wheel is prevented from being formed in the planet carrier, the processing difficulty and the production cost are reduced, the installation hole for fixing the planet wheel pin shaft is more convenient to process, and the control of the fit tolerance, the gap and the assembly precision of the installation hole is ensured.
Drawings
FIG. 1 is a schematic diagram of a planet carrier;
FIG. 2 is a top plan view of the planet carrier;
FIG. 3 is a schematic diagram of the overall structure of the rotary drill;
FIG. 4 is an overall schematic diagram of the torque multiplication device;
FIG. 5 is a schematic diagram of the torque increasing device connected with the power head;
FIG. 6 is a front view of the torque multiplication device;
FIG. 7 is a top view of the torque multiplication device;
FIG. 8 is a cross-sectional view of the torque multiplication device;
in the figure, 1-rotary digging host 2-mast 3-drill rod 4-power head 5-torque increasing device 6-pin shaft 7-torque increasing box 8-pin shaft 9-bracket 10-bolt 11-clamping plate 12-upper box 13-planet carrier 131-lower connecting end 132-upper connecting end 14-gear ring 15-lower box 16-sealing seat 17-sealing 18-limiting device 19-sealing seat 20-sealing 21-bearing 22-bearing 23-planet wheel bearing 24-planet wheel pin shaft 25-sealing seat 26-sun wheel shaft 261-reinforcing section 27-planet wheel.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
As shown in fig. 1, 2 and 7, the planet carrier 13 of the present invention is designed as a split structure from a conventional structure, and is composed of an upper carrier body 133, a lower carrier body 134, and a plurality of connecting shafts 135 connecting the upper carrier body 133 and the lower carrier body 134; the centers of the upper and lower frames 133 and 134 have a center hole for receiving the sun gear shaft 26; the spaces 137 formed between adjacent shafts 135 may be used to accommodate the installation of planets. The structure not only reduces the weight of the planet carrier, but also avoids the installation hole for accommodating the planet wheel from being formed on the planet carrier, reduces the processing difficulty and the production cost, ensures that the installation hole 136 for fixing the planet wheel pin shaft is more convenient to process, and ensures the control of the fit tolerance, the clearance and the assembly precision of the installation hole.
The upper end surface of the upper frame body 133 and the lower end surface of the lower frame body 134 are respectively provided with an upper connecting end 132 and a lower connecting end 131. The upper and lower connection ends 132 and 131 may be integrally formed with the upper end surface of the upper frame 133 and the lower end surface of the lower frame 134, or may be separate members, and integrally connected and assembled with the upper end surface of the upper frame 133 and the lower end surface of the lower frame 134.
The planet carrier 13 is arranged in the torque increasing device 5 of the rotary drilling machine power head, so that the dead weight of the torque increasing device is reduced, the output torque of the power head is improved to the greatest extent after passing through the torque increasing device, and the power head of the rotary drilling machine can meet the requirement of embedding the sleeve with larger diameter and larger depth.
Referring to fig. 3-8, the rotary drilling rig comprises a rotary drilling host 1, a mast 2, a drill rod 3, a power head 4 and a torque increasing device 5 which are supported and fixed on the mast, wherein the power head 4 and the torque increasing device 5 can move up and down along the mast 2, the power head 4 drives the drill rod 3 to drill, meanwhile, the output end of the power head 4 is connected with the torque increasing device 5 through a pin shaft 6, and the power head 4 increases the final torque through the torque increasing device 5, so that the output end of the torque increasing device 5 can meet the requirement of embedding a sleeve with a large diameter or a deeper depth.
The torque increasing device 5 comprises a torque increasing box 7, a bracket 9, a pin shaft 8, a bolt 10 and a clamping plate 11, wherein the pin shaft 8 is used for connecting and fixing the torque increasing box 7 and the bracket 9, the torque increasing box 7 is connected with the bracket 9 through the pin shaft 8, and the axis direction of the pin shaft 6 is parallel to the rotation center of the power head 4. One end of the bracket 9 is connected with the torque increasing box 7, and the other end extends out of the two claws to be clamped on the mast 2, so that the bracket 9 can vertically slide along the mast 2. The torque increasing box 7 is attached to the mast 2 through the bracket 9, so that the stability and the reliability of the torque increasing box can be improved, and the influence of the dead weight on the power head 4 can be reduced as much as possible. However, because the distance between the mast 2 and the drill rod 3 is limited, the internal structural design of the torque increasing box 7 not only needs to meet the requirements of assembly, construction and production cost in a limited space, but also needs to meet the requirements of torque output, strength, rigidity and matching precision, and the dead weight of the torque increasing box is reduced as far as possible, so that the internal structural design of the torque increasing box 7 needs to comprehensively consider factors in various aspects, and finally the torque increasing box capable of meeting the requirements is designed.
In the torque increasing box 7, the torque output by the power head 4 is transmitted to a sun gear shaft 26 through a pin shaft 6, the sun gear shaft 26, a planet wheel 27 and a gear ring 14 form a planetary reduction mechanism, the sun gear shaft 26 is a hollow shaft, a space capable of containing the drill rod 3 to vertically pass through is formed, and the torque increasing box 7 can move up and down along the mast 2 along with the power head 4 without influencing the movement of the drill rod 3. The upper end of the sun gear shaft 26 is connected with the output end of the power head 4 through a pin shaft 6. The sun gear shaft 26 is an input end of the planetary reduction mechanism, the gear ring 14 is a fixed end of the planetary reduction mechanism, the upper end of the gear ring 14 is connected with the upper box body 12 through bolts, the lower end of the gear ring 14 is connected with the lower box body 15 through bolts, and finally the planet carrier 13 is used as an output end for outputting torque of the planetary reduction mechanism. The lower connecting end 131 of the lower end of the planet carrier 13 can be connected with a casing to be buried, and is used for sequentially feeding the casing one by one into a deeper drilling hole formed after drilling through the drill rod 3. The upper box body 12 and the lower box body 15 are connected and fixed with one end of the bracket 9, so that the stress is high, and the service life is ensured.
The inner wall of the sun gear shaft 26 is provided with a reinforcing section 261, the wall thickness of the reinforcing section 261 is larger than that of the inner wall of other positions, and the reinforcing section 261 is positioned at the position where the planet carrier 13 is matched with the gear ring 14, so that the hollow sun gear shaft 26 can more reliably bear and transmit torque. The reinforcing section 261 is integrally connected with the inner wall of the periphery by smooth transition. The hollow shaft inner diameter of the sun gear shaft 26 ranges between 300 mm and 800 mm.
Because the internal space of the torque increasing box 7 is limited, the use requirements of strength and service life in the torque increasing box 7 are met, and the standard component bearing can be well matched with the internal structural space, so that the transmitted structural form cannot be met. The planet wheel 27 is fixed on the planet carrier 13 through a planet wheel pin shaft 24 and a planet wheel bearing 23, a bearing 21 sleeved on the sun wheel shaft 26 is respectively clamped between the inner sides of an upper connecting end 132 and a lower connecting end 131 and the sun wheel shaft 26, a bearing 22 sleeved on the upper connecting end 132 and the lower connecting end 131 is respectively clamped between the outer sides of the upper connecting end 132 and the lower connecting end 131 and the upper box body 12 and between the outer sides of the lower connecting end 131 and the lower box body 12, the planet carrier 13 is fixed through the bearing 21 and the bearing 22, the bearings 22 at the upper end and the lower end are axially fixed through sealing seats 16, the sealing seats 16 at the upper end and the lower end are respectively fixed on the upper box body 12 and the lower box body 15, and the sealing seats 16 are sealed with the upper connecting end 132 and the lower connecting end 131 through sealing 17; the bearing 21 at the upper end is axially fixed through the sealing seat 25, the sealing seat 25 is fixed on the upper connecting end 132, and the sealing seat 25 and the sun gear shaft 26 are sealed through sealing; the bearing 21 at the lower end is axially fixed by a sealing seat 19, wherein the bearing 21 at the lower end is also fixed in the planet carrier 13 by a limiting device 18, the limiting device 18 is of a sectional design, and is radially fixed by the sealing seat 19 arranged on the inner side wall of the lower connecting end 131. The seal between the seal holder 19 and the sun gear shaft 26 is achieved by means of a seal 20.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (6)
1. A split type planet carrier adopted in a torque increasing structure of a power head of a rotary drilling rig is characterized in that,
comprises an upper frame body, a lower frame body and a plurality of connecting shafts for connecting the upper frame body and the lower frame body;
the upper frame body and the lower frame body are provided with a central hole for accommodating a sun gear shaft;
the space formed between adjacent connecting shafts is used for accommodating a planet wheel meshed with a sun wheel on a sun wheel shaft;
the upper frame body and the lower frame body are respectively and correspondingly provided with a mounting hole for accommodating a planet wheel pin shaft, and the planet wheel is mounted in a space formed between adjacent connecting shafts through the planet wheel pin shaft;
an inner ring surrounded by a plurality of planet gears is meshed with a sun gear, and an outer ring is meshed with a gear ring;
the gear ring is clamped and fixed by the upper box body and the lower box body;
the upper end face of the upper frame body and the lower end face of the lower frame body are respectively provided with an upper connecting end and a lower connecting end which can be connected with a sleeve to be buried;
an inner bearing sleeved on the sun gear shaft is respectively clamped and arranged between the inner sides of the upper connecting end and the lower connecting end and the sun gear shaft, and the inner bearings are axially fixed through an inner sealing seat connected with the upper connecting end and the lower connecting end;
an outer bearing sleeved on the upper connecting end and the lower connecting end is respectively clamped and arranged between the outer sides of the upper connecting end and the lower connecting end and the upper box body or the lower box body, and the outer bearing is axially fixed through an outer sealing seat connected with the upper box body and the lower box body;
the sun gear shaft is a hollow shaft, and a space for accommodating the drill rod to vertically pass through is formed in the sun gear shaft;
the upper end of the sun gear shaft is connected with the output end of the power head through a pin shaft; the sun gear shaft is the input end of the planetary reduction mechanism, the gear ring is the fixed end of the planetary reduction mechanism, the upper end of the gear ring is connected with the upper box body through a bolt, the lower end of the gear ring is connected with the lower box body through a bolt, and finally the planetary carrier is used as the output end for outputting torque of the planetary reduction mechanism.
2. The split type planet carrier used in the torque increasing structure of the power head of the rotary drilling rig according to claim 1, wherein the mounting hole surrounds the center hole.
3. The split type planet carrier adopted in the torque increasing structure of the power head of the rotary drilling rig according to claim 2, wherein the mounting holes are uniformly surrounded around the center hole.
4. The split type planet carrier adopted in the torque increasing structure of the power head of the rotary drilling rig according to claim 1, wherein the sun gear shaft is a hollow shaft, and a space for vertically passing through a drill rod is formed in the sun gear shaft.
5. The split type planet carrier adopted in the torque increasing structure of the power head of the rotary drilling rig according to claim 1, wherein the sun gear shaft is a hollow shaft, the inner wall of the sun gear shaft is provided with a reinforcing section, the wall thickness of the reinforcing section is larger than that of the inner wall of other positions, and the reinforcing section is positioned at the position where the planet gear is matched with the sun gear or the position where the planet gear is matched with the gear ring.
6. The split type planet carrier adopted in the torque increasing structure of the power head of the rotary drilling rig according to claim 4 or 5, wherein the inner diameter of the hollow shaft of the sun gear shaft ranges from 300 mm to 800 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810161274.7A CN108180281B (en) | 2018-02-27 | 2018-02-27 | Split type planet carrier adopted in torque increasing structure of power head of rotary drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810161274.7A CN108180281B (en) | 2018-02-27 | 2018-02-27 | Split type planet carrier adopted in torque increasing structure of power head of rotary drilling rig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108180281A CN108180281A (en) | 2018-06-19 |
| CN108180281B true CN108180281B (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810161274.7A Active CN108180281B (en) | 2018-02-27 | 2018-02-27 | Split type planet carrier adopted in torque increasing structure of power head of rotary drilling rig |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109458126A (en) * | 2018-10-15 | 2019-03-12 | 高邮市恒辉机械有限公司 | A kind of rotary digging drill power head torsion increasing device |
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| CN205780789U (en) * | 2016-05-20 | 2016-12-07 | 浙江万向精工有限公司 | A kind of EPB driver reduction box |
| CN206067493U (en) * | 2016-09-23 | 2017-04-05 | 辽宁曙光汽车集团股份有限公司 | Strength support type electric drive decelerator |
| CN208089928U (en) * | 2018-02-27 | 2018-11-13 | 徐州徐工基础工程机械有限公司 | A kind of split type planet carrier used in rotary digging drill power head torque structure |
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2018
- 2018-02-27 CN CN201810161274.7A patent/CN108180281B/en active Active
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| JP2002013598A (en) * | 2000-06-30 | 2002-01-18 | Okamura Corp | Reduction gear in excavator and the like |
| CN202194562U (en) * | 2011-09-07 | 2012-04-18 | 湖南恒至凿岩科技有限公司 | Rotation power head of planetary drive drilling rig |
| CN102562954A (en) * | 2012-02-03 | 2012-07-11 | 江苏省金象传动设备股份有限公司 | Transmission gear of tube mill |
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| CN108180281A (en) | 2018-06-19 |
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