CN108180260B - Rotary drilling rig and power head torque increasing device thereof - Google Patents
Rotary drilling rig and power head torque increasing device thereof Download PDFInfo
- Publication number
- CN108180260B CN108180260B CN201810163811.1A CN201810163811A CN108180260B CN 108180260 B CN108180260 B CN 108180260B CN 201810163811 A CN201810163811 A CN 201810163811A CN 108180260 B CN108180260 B CN 108180260B
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- box body
- power head
- torque increasing
- carrier
- planetary
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- 238000005553 drilling Methods 0.000 title claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 230000009467 reduction Effects 0.000 claims abstract description 16
- 210000000078 claw Anatomy 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000001681 protective effect Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010008 shearing Methods 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
- 230000007704 transition Effects 0.000 description 1
Classifications
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- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
-
- 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
- F16H57/02—Gearboxes; Mounting gearing therein
Abstract
The invention discloses a power head torque increasing device, which comprises a torque increasing box and a bracket, wherein one end of the bracket is connected with the torque increasing box, and the other end of the bracket extends out to form a claw which can be clamped on a mast; the torque increasing box comprises: the planetary reduction mechanism is formed by meshing a sun gear shaft, a planetary gear arranged on a planetary carrier and a gear ring through gears, and an upper box body and a lower box body for clamping and fixing the planetary reduction mechanism, and the planetary reduction mechanism is fixedly connected to a carrier through the upper box body and the lower box body; the upper end of the sun gear shaft is connected with the output end of the power head; the upper end of the gear ring is connected with the upper box body, and the lower end of the gear ring is connected with the lower box body; the lower end of the planet carrier is provided with a lower connecting end which is used for being connected with a sleeve pipe which needs to be buried. The power head torque increasing device can be arranged on a rotary drilling rig, can lower the protective cylinder to a designated position, can meet the sleeve burying requirement of larger diameter and larger depth, and has the characteristics of simple structure, stable and reliable work, convenient disassembly and assembly and the like.
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 torque increasing device for the power head of the rotary drilling rig, which solves the problem that the protective barrel cannot be lowered to the designated position due to insufficient torque in the steel protective barrel buried by the rotary drilling rig at present, and the device can be directly assembled and disassembled on the rotary drilling rig without affecting the original functions and has the characteristics of simple structure, stable and reliable work, convenient assembly and disassembly and the like.
In order to achieve the above purpose, the invention provides a rotary drilling rig and a power head torque increasing device thereof.
The power head torque increasing device is characterized by comprising a torque increasing box and a bracket, wherein one end of the bracket is connected with the torque increasing box, the other end of the bracket extends out to form a claw which can be clamped on a mast, and the bracket can vertically slide along the mast through the claw;
the torque increasing box comprises: the planetary reduction mechanism is formed by meshing a sun gear shaft, a planetary gear arranged on a planetary carrier and a gear ring through gears, and an upper box body and a lower box body for clamping and fixing the planetary reduction mechanism, and the planetary reduction mechanism is fixedly connected to a carrier through the upper box body and the lower box body;
the sun gear shaft is a hollow shaft, so that a space capable of containing the drill rod to vertically pass through is formed; the upper end of the sun gear shaft is connected with the output end of the power head; the upper end of the gear ring is connected with the upper box body, and the lower end of the gear ring is connected with the lower box body; the lower end of the planet carrier is provided with a lower connecting end for connecting with a sleeve to be buried;
further, an upper connecting end is arranged on the upper end face of the planet carrier, an inner bearing sleeved on the sun gear shaft is respectively clamped between the inner side of the upper connecting end and/or the inner side of 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.
Further, an upper connecting end is arranged on the upper end face of the planet carrier, 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.
Further, the inner bearing at the lower end is also fixed in the planet carrier through a limiting device, and the limiting device is of a segmented structure which is arranged at intervals along the circumference.
Further, the planet carrier is of a split structure and 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 space formed between adjacent shafts is used for accommodating and mounting the planet gears.
Further, the upper frame body and the lower frame body are respectively provided with mounting holes for accommodating planetary gear pin shafts, and planetary gears are mounted in spaces formed between adjacent connecting shafts through the planetary gear pin shafts.
Further, 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 carrier is matched with the gear ring.
Further, the hollow shaft inner diameter of the sun gear shaft ranges from 300 mm to 800 mm.
Further, the upper end of the sun gear shaft is connected with the output end of the power head through a plurality of pin shafts, and the axial direction of the pin shafts is perpendicular to the rotation center of the power head.
The rotary drilling rig comprises a rotary drilling host, a mast, a drill rod and a power head which is fixed on the mast and can drive the drill rod to drill, and is characterized by further comprising the power head torque increasing device.
The invention has the beneficial effects that:
the power head torque increasing device is arranged on the rotary drilling rig, the output torque of the power head is increased after passing through the torque increasing device, the torque amplifying effect is achieved, when the steel casing is buried in the rotary drilling rig, the casing can be lowered to a designated position, the casing burying requirements of larger diameter and larger depth can be met, the power head torque increasing device can be directly assembled and disassembled and assembled on the conventional rotary drilling rig, the functions of the conventional rotary drilling rig are not affected, and the power head torque increasing device has the characteristics of simple structure, stable and reliable work, convenience in assembly and disassembly and the like.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a rotary drill;
FIG. 2 is an overall schematic diagram of the torque multiplication device;
FIG. 3 is a schematic diagram of the torque increasing device connected with the power head;
FIG. 4 is a front view of the torque converter of FIG. 2;
FIG. 5 is a top view of the torque converter of FIG. 2;
FIG. 6 is a longitudinal cross-sectional view of the torque multiplication device of FIG. 4;
FIG. 7 is a transverse cross-sectional view of FIG. 6;
FIG. 8 is a schematic diagram of a planet carrier;
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.
The utility model provides a dig soon and bore, dig host computer 1 soon, mast 2, drilling rod 3 and support and fix unit head 4 and torque converter 5 on the mast, unit head 4 and torque converter 5 can follow mast 2 up-and-down motion, unit head 4 drive drilling rod 3 drills, unit head 4 output links to each other with torque converter 5 through round pin axle 6 simultaneously, unit head 4 increases final moment of torsion through torque converter 5, make torque converter 5 output can satisfy the sleeve pipe of major diameter or deep degree of depth and bury.
Referring to fig. 2 to 7, the torque increasing device 5 includes a torque increasing box 7, a bracket 9, a pin 8 for connecting and fixing the torque increasing box 7 and the bracket 9, a bolt 10, and a clamping plate 11, wherein the torque increasing box 7 is connected with the bracket 9 through the pin 8, and the axis direction of the pin 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 gear shaft 26 is respectively clamped between the inner sides of an upper connecting end 132 and a lower connecting end 131 of the upper end face and the lower end face of the planet carrier 13 and the sun gear 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 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 of the planet carrier 13 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 19 may be attached to the stop 18. The seal between the seal holder 19 and the sun gear shaft 26 is achieved by means of a seal 20. In this solution, to achieve axial positioning of the bearing 21 by shearing of the structural member, the positioning device 18 is installed only when it is designed in a sectional manner.
The upper and lower connection ends 132, 131 may be integrally formed with or separate from the upper and lower end surfaces of the carrier 13, and integrally connected and assembled with the upper and lower end surfaces of the carrier 13.
In this application, the planet carrier 13 is preferably designed as a split structure from a conventional structure, and as shown in fig. 8, 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.
After the output torque of the power head passes through the torque increasing device, the final output torque is increased, and the torque amplifying effect is achieved, so that the power head of the rotary drilling rig can meet the requirement of embedding the sleeve with larger diameter and depth.
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 (7)
1. The power head torque increasing device is characterized by comprising a torque increasing box and a bracket, wherein one end of the bracket is connected with the torque increasing box, the other end of the bracket extends out to form a claw which can be clamped on a mast, and the bracket can vertically slide along the mast through the claw;
the torque increasing box comprises: the planetary reduction mechanism is formed by meshing a sun gear shaft, a planetary gear arranged on a planetary carrier and a gear ring through gears, and an upper box body and a lower box body for clamping and fixing the planetary reduction mechanism, and the planetary reduction mechanism is fixedly connected to a carrier through the upper box body and the lower box body;
the sun gear shaft is a hollow shaft, so that a space capable of containing the drill rod to vertically pass through is formed; the upper end of the sun gear shaft is connected with the output end of the power head; the upper end of the gear ring is connected with the upper box body, and the lower end of the gear ring is connected with the lower box body; the lower end of the planet carrier is provided with a lower connecting end for connecting with a sleeve to be buried;
the upper end face of the planet carrier is provided with an upper connecting end, the inner sides of the upper connecting end and the lower connecting end are respectively clamped with an inner bearing sleeved on 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;
the upper end face of the planet carrier is provided with an upper connecting end, the outer sides of the upper connecting end and the lower connecting end and the upper box body and the lower box body are respectively clamped and provided with an outer bearing which is sleeved on the upper connecting end and the lower connecting end, and the outer bearings are axially fixed through an outer sealing seat connected with the upper box body and the lower box body;
the inner bearing at the lower end is also fixed in the planet carrier through a limiting device, and the limiting device is of a segmented structure which is arranged at intervals along the circumference;
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 power head torque increasing device according to claim 1, wherein the planetary carrier has a split structure, and 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 space formed between adjacent shafts is used for accommodating and mounting the planet gears.
3. The power head torque increasing device according to claim 1, wherein the upper and lower frame bodies are respectively provided with mounting holes for accommodating planetary gear pins through which the planetary gears are mounted in spaces formed between the adjacent coupling shafts.
4. The power head torque intensifier as set forth in claim 1, wherein the inner wall of the sun gear shaft is provided with a reinforcing section, the wall thickness of the reinforcing section is greater than the wall thickness of the inner wall of other positions, and the reinforcing section is located at the position where the planet carrier is matched with the gear ring.
5. The power head torque converter of claim 4, wherein the hollow shaft of the sun gear shaft has an inner diameter in the range of 300 mm to 800 mm.
6. The power head torque increasing device according to claim 1, wherein the upper end of the sun gear shaft is connected with the output end of the power head through a plurality of pin shafts, and the axis direction of the pin shafts is perpendicular to the rotation center of the power head.
7. A rotary drilling rig comprising a rotary drilling host, a mast, a drill rod, and a power head fixed on the mast and capable of driving the drill rod to drill, and further comprising the power head torque increasing device according to any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810163811.1A CN108180260B (en) | 2018-02-27 | 2018-02-27 | Rotary drilling rig and power head torque increasing device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810163811.1A CN108180260B (en) | 2018-02-27 | 2018-02-27 | Rotary drilling rig and power head torque increasing device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108180260A CN108180260A (en) | 2018-06-19 |
| CN108180260B true CN108180260B (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810163811.1A Active CN108180260B (en) | 2018-02-27 | 2018-02-27 | Rotary drilling rig and power head torque increasing device thereof |
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| CN (1) | CN108180260B (en) |
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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 |
| CN109764124A (en) * | 2019-03-21 | 2019-05-17 | 攀枝花学院 | Jumbolter torque multiplier |
| CN110454081A (en) * | 2019-09-24 | 2019-11-15 | 北京三一智造科技有限公司 | Power head Variable Centre Distance structure and rotary drilling rig |
| CN110863772B (en) * | 2019-11-07 | 2021-01-08 | 徐州健川机械制造有限公司 | Power head of rotary drilling rig |
| CN110761704A (en) * | 2019-11-12 | 2020-02-07 | 徐州健川机械制造有限公司 | Power head of rotary drilling rig |
| CN113374402A (en) * | 2021-05-26 | 2021-09-10 | 高邮市恒辉机械有限公司 | Power head of oversized torque increasing device |
| CN114352185B (en) * | 2021-12-13 | 2024-01-02 | 广东君豪高科地下空间建设有限公司 | Variable speed drill bit for underground space development field |
| CN114838091A (en) * | 2022-04-02 | 2022-08-02 | 北京三一智造科技有限公司 | Power head and rotary drilling rig |
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| Publication number | Publication date |
|---|---|
| CN108180260A (en) | 2018-06-19 |
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