CN108180260A - A kind of rotary drilling rig and its power head torsion increasing device - Google Patents
A kind of rotary drilling rig and its power head torsion increasing device Download PDFInfo
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- CN108180260A CN108180260A CN201810163811.1A CN201810163811A CN108180260A CN 108180260 A CN108180260 A CN 108180260A CN 201810163811 A CN201810163811 A CN 201810163811A CN 108180260 A CN108180260 A CN 108180260A
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- power head
- planetary gear
- increasing device
- wheel shaft
- sun wheel
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- 238000005553 drilling Methods 0.000 title claims abstract description 34
- 210000000078 claw Anatomy 0.000 claims abstract description 6
- 238000005728 strengthening Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 7
- 230000033001 locomotion Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 11
- 238000013461 design Methods 0.000 description 6
- 238000012407 engineering method Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation 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
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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Retarders (AREA)
Abstract
The invention discloses a kind of power head torsion increasing devices, and comprising torque case and bracket, bracket one end is connect with torque case, and the other end is extended with the claw that may be stuck on mast；Torque case includes：The planetary gear speed reducing mechanism formed and the upper box and lower box that grip planetary gear speed reducing mechanism are engaged by gear with gear ring by sun wheel shaft, the planetary gear on planet carrier, planetary gear speed reducing mechanism is fastened on by upper box and lower box on bracket；Sun wheel shaft upper end is used to connect with power head output terminal；Gear ring upper end is connect with upper box, and gear ring lower end is connect with lower box；Planet carrier lower end setting one is used for the lower connecting pin with inbuilt casing is needed to be attached.The power head torsion increasing device of the present invention may be provided on rotary drilling rig, can casing be transferred to designated position, and the casing that can meet larger diameter and bigger depth buries demand, have the characteristics that simple in structure, stable and reliable in work, dismounting is convenient.
Description
Technical field
The present invention relates to surface in basic engineering construction or the drilling device field of underground hole-forming, more particularly to a kind of rotary diggings
Drilling machine.
Background technology
Rotary drilling rig is a kind of boring machine for Concrete Grouting Pale in pile foundation engineering.In recent years, with
Economic construction of China rapidly develops, rotary drilling rig highway, railway, across river bridge spanning the sea, urban track traffic at home and abroad
Etc. in engineerings using increasingly extensive.
Under normal conditions, wet type rotary digging engineering method of the rotary drilling rig using static mud protecting wall or the dry type without stabilizing solution are revolved
Engineering method is dug, coordinates different drilling tools, can adapt to the soil layer of most area and the construction of soft or hard layer.But it in mud, quicksand, returns
Fill out, the caving grounds such as solution cavity or it is American-European some is waited not allow to construct using the area of mud when, generally require additionally to adopt
A full set of pipe construction is carried out with vibration hammer with full-rotating drill, pipe rubbing machine or crawler crane, while increasing a large amount of extras, to existing
Field brings huge assembly and disassembly workload, there are construction cost height, the problems such as efficiency is low.Full-sleeve rotary digging engineering method and wet type rotary digging
Engineering method and dry type churning driven engineering method have buried part or full brill the difference lies in full-sleeve rotary digging engineering method using ancillary equipment
The Steel Casing of hole depth carries out retaining wall, therefore improves adaptability of the rotary drilling rig to stratum.It is as can motor-driven using churning driven
Power head carries out a full set of pipe construction, then can reduce a large amount of ancillary equipments and on-site installation work amount, and construction efficiency is high and economical, just
It is prompt.
The power head torque of existing rotary drilling rig can only meet minor diameter or the casing of slight depth is buried, and can not meet big
Part engineering demand.In practice of construction, there are construction efficiency is undesirable, equipment damage degree is larger or even can not realize casing
The problem of driving.
Invention content
For current engineering construction there are the problem of, the present invention provides a kind of rotary digging drill power head torsion increasing device, solution
It has determined and has buried in steel casing caused by torque deficiency that casing can not transfer to the difficulty of designated position currently with rotary drilling rig
Topic, and the device can be dismounted directly on rotary drilling rig, not influence original function, have simple in structure, the operation is stable
Reliably, the features such as convenient is dismounted.
To achieve these goals, the present invention provides a kind of rotary drilling rig and its power head torsion increasing devices.
A kind of power head torsion increasing device, which is characterized in that comprising torque case and bracket, bracket one end is connect with torque case,
The other end is extended with the claw that may be stuck on mast, makes bracket can be along mast vertical sliding motion by claw；
The torque case includes：Engage what is formed by gear with gear ring by sun wheel shaft, the planetary gear on planet carrier
Planetary gear speed reducing mechanism and the upper box and lower box for gripping planetary gear speed reducing mechanism, planetary gear speed reducing mechanism is by upper box under
Babinet is fastened on bracket；
Sun wheel shaft is hollow shaft, and formation can accommodate the space that drilling rod passes perpendicularly through；Sun wheel shaft upper end is used for defeated with power head
Outlet connects；Gear ring upper end is connect with upper box, and gear ring lower end is connect with lower box；Planet carrier lower end setting one is used for and needs
The lower connecting pin that inbuilt casing is attached；
Further, connecting pin in planet carrier upper surface setting one, the inside and sun wheel shaft of upper connecting pin and/or lower connecting pin
Between respectively clamping setting one be placed on inner bearing in sun wheel shaft, inner bearing is by being connected to upper connecting pin and/or lower connection
The interior sealing seat at end carries out axial restraint.
Further, connecting pin in planet carrier upper surface setting one, the outside and top box of upper connecting pin and/or lower connecting pin
Clamping setting one is placed on the outer bearing on connecting pin and/or lower connecting pin respectively between body and/or lower box, and outer bearing passes through
The external seal seat being connected on upper box and/or lower box carries out axial restraint.
Further, it is also fixed in planet carrier by limiting device positioned at the inner bearing of lower end, the limiting device is
Circumferentially spaced segmentation structure.
Further, planet carrier is separate structure, including upper frame, lower frame and connection upper frame and lower frame it is multiple
Connecting shaft；Planetary gear is installed for accommodating in the space formed between adjacent connecting shaft.
Further, it is separately provided for accommodating the mounting hole of planetary gear axis pin, planetary gear on upper frame and lower frame
It is installed on by planetary gear axis pin in the space formed between adjacent connecting shaft.
Further, the inner wall of sun wheel shaft sets a strengthening segment, and the wall thickness at strengthening segment is more than the inner wall of other positions
Thickness, strengthening segment are located at planet carrier and the matched position of gear ring.
Further, the hollow shaft interior diameter of sun wheel shaft is ranging between 300 millimeters to 800 millimeters.
Further, sun wheel shaft upper end is connect with power head output terminal by several axis pins, and axis pin axis direction with
The power head centre of gyration is vertical.
A kind of rotary drilling rig comprising rotary digging host, mast, drilling rod and is fixed on mast and drilling rod can be driven to be bored
The power head in hole, which is characterized in that further include the above-mentioned arbitrary power head torsion increasing device.
The advantageous effect that the present invention is reached：
The power head torsion increasing device of the present invention, is arranged on rotary drilling rig, after the output torque of power head is by torsion increasing device, most
Whole output torque gets a promotion, and plays torque amplification, when rotary drilling rig buries steel casing, can transfer to casing
Designated position, the casing that can meet larger diameter and bigger depth bury demand, and the power head torsion increasing device can be directly existing
It is dismounted and is installed and used on some rotary drilling rigs, do not influence the function of original rotary drilling rig, there is simple in structure, work surely
The features such as fixed reliable, dismounting is convenient.
Description of the drawings
Fig. 1 churning driven overall structure diagrams；
Fig. 2 torsion increasing device overall schematics；
Fig. 3 torsion increasing devices and power head connection diagram；
The front view of Fig. 4 Fig. 2 torsion increasing devices；
The vertical view of Fig. 5 Fig. 2 torsion increasing devices；
The longitudinal sectional view of Fig. 6 Fig. 4 torsion increasing devices；
The transverse sectional view of Fig. 7 Fig. 6；
Fig. 8 planet carrier schematic diagrames；
In figure, 1- rotary digging host 2- mast 3- drilling rod 4- power head 5- torsion increasing device 6- axis pin 7- torque case 8- axis pins
Connecting pin 14- gear rings on the 132- of connecting pin under 9- bracket 10- bolt 11- snap-gauge 12- upper box 13- planet carriers 131-
15- lower box 16- seal receptacles 17- sealing 18- limiting device 19- seal receptacles 20- sealing 21- bearing 22- bearing 23- planetary gears
Bearing 24- planetary gear axis pin 25- seal receptacle 26- sun wheel shaft 261- strengthening segment 27- planetary gears.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and be not intended to limit the protection scope of the present invention and limit the scope of the invention.
A kind of churning driven comprising rotary digging host 1, mast 2, drilling rod 3 and the power head 4 being supported and fixed on mast and increases
Device 5 is turned round, power head 4 and torsion increasing device 5 can move up and down along mast 2, and power head 4 drives drilling rod 3 to drill, while power
First 4 output terminal is connected by axis pin 6 with torsion increasing device 5, and power head 4 is increased final torque by torsion increasing device 5, fills torque
The casing that major diameter can be met or more deeply spend by putting 5 output terminals is buried.
With reference to Fig. 2-Fig. 7, torsion increasing device 5 includes torque case 7, bracket 9 and the pin of the fixed torque case 7 of connection and bracket 9
During axis 8, bolt 10 and snap-gauge 11, torque case 7 are connect with bracket 9 by axis pin 8, and 6 axis direction of axis pin is turned round with power head 4
The heart is parallel.9 one end of bracket is connect with torque case 7, and the other end stretches out two claws and is stuck on mast 2, makes bracket 9 can be along mast 2
Vertical sliding motion.Torque case 7 is attached to by bracket 9 on mast 2, can increase its stability and reliability, reduces it to the greatest extent certainly
Again on influence caused by power head 4.But since the distance between mast 2 and drilling rod 3 are limited, the structure inside torque case 7
Design should meet the assembling, construction and production cost demand of the confined space, meet torque output, intensity, rigidity again and match
The demand of precision is closed, and reduces its dead weight as far as possible, therefore, the structure design needs inside torque case 7 consider each
Aspect factor, final design go out can meet demand torque case.
In torque case 7,4 output torque of power head is transferred to sun wheel shaft 26, sun wheel shaft 26, planetary gear by axis pin 6
27 constitute a kind of planetary gear speed reducing mechanism with gear ring 14, and sun wheel shaft 26 is hollow shaft, and formation can accommodate what drilling rod 3 passed perpendicularly through
Space makes torque case 7 that can move up and down with power head 4 along mast 2, does not influence the movement of drilling rod 3.26 upper end of sun wheel shaft
It is connect by axis pin 6 with 4 output terminal of power head.Sun wheel shaft 26 is the input terminal of planetary gear speed reducing mechanism, and gear ring 14 subtracts for planet
The fixing end of fast mechanism, 14 upper end of gear ring are connect by bolt with upper box 12, and 14 lower end of gear ring passes through bolt and lower box 15
Connection, the torque for finally carrying out planetary gear speed reducing mechanism for output terminal by planet carrier 13 export.The lower connecting pin of 13 lower end of planet carrier
131 can save land for casing one to be saved one with inbuilt casing is needed to be attached and are sequentially sent to what is formed after drilling rod 3 is applied and bored
Deeper drill hole.Upper box 12 and lower box 15 connect fixation with 9 one end of bracket, make its stress big, ensure that using the longevity
Life.
The inner wall of sun wheel shaft 26 sets a strengthening segment 261, and the wall thickness at strengthening segment 261 is more than the interior wall thickness of other positions
Degree, strengthening segment 261 are located at planet carrier 13 and 14 matched position of gear ring, hollow sun wheel shaft 26 are enable more reliably to carry
With transmission torque.It is used between strengthening segment 261 and the inner wall on periphery and seamlessly transits to form integrally connected.Sun wheel shaft 26 it is hollow
Axis interior diameter is ranging between 300 millimeters to 800 millimeters.
Since 7 inner space of torque case is limited, intensity, the use demand in service life should be met in torque case 7, is made again
Standard component bearing can form good cooperation with internal structural space, and therefore, the structure type of transmission can not meet.Planetary gear
27 are fixed on by planetary gear axis pin 24 and planet wheel bearing 23 on planet carrier 13, the upper company of 13 upper surface of planet carrier and lower face
It connects and clamps the bearing that setting one is placed in sun wheel shaft 26 between end 132, the inside of lower connecting pin 131 and sun wheel shaft 26 respectively
21, clamping setting one is placed on respectively between upper connecting pin 132, the outside of lower connecting pin 131 and upper box 12 and lower box 12
Bearing 22 on connecting pin 132, lower connecting pin 131 is fixed planet carrier 13 by bearing 21, bearing 22, upper and lower ends
Bearing 22 axial restraint is carried out by seal receptacle 16, the seal receptacle 16 of upper and lower ends is separately fixed at upper box 12 and nowel
On body 15, it is sealed between the upper connecting pin 132 of seal receptacle 16 and planet carrier 13, lower connecting pin 131 using sealing 17；Upper end
Bearing 21 axial restraint is carried out by seal receptacle 25, seal receptacle 25 is fixed on connecting pin 132, seal receptacle 25 and sun gear
It is sealed between axis 26 by sealing；The bearing 21 of lower end carries out axial restraint by seal receptacle 19, wherein positioned at lower end
Bearing 21 is also fixed on by limiting device 18 in planet carrier 13, and limiting device 18 is sectional design, by being arranged on lower company
Connect end 131 madial walls on seal receptacle 19 carry out it is radially fixed.Seal receptacle 19 can be connected on limiting device 18.Seal receptacle 19
It is sealed between sun wheel shaft 26 by sealing 20.To being realized by the shearing resistance of structural member to bearing 21 in this programme
Axially position, only when limiting device 18 makes sectional design, could be installed.
Upper connecting pin 132, lower connecting pin 131 can be integrally formed with upper surface, the lower face of planet carrier 13 or be independent
Component, connect, be assembled into one with upper surface, the lower face of planet carrier 13.
In the application, preferably, planet carrier 13 is separate structure by traditional structure design, as shown in figure 8, by upper frame
133rd, lower frame 134 and multiple connecting shafts 135 of connection upper frame 133 and lower frame 134 are formed；Upper frame 133 and lower frame 134
Center has a centre bore, which is used to accommodate sun wheel shaft 26；The space 137 formed between adjacent connecting shaft 135 can
Planetary gear is installed for accommodating.This structure not only alleviates the weight of planet carrier, and avoids and use is opened up on planet carrier
In the mounting hole for accommodating planetary gear, difficulty of processing and production cost are reduced, makes the mounting hole 136 of fixed planetary gear axis pin more
Facilitate processing, ensure that the control of the fit tolerance of mounting hole, gap and assembly precision.
After the output torque of power head is by torsion increasing device, final output torque gets a promotion, and plays torque amplification and makees
With so that the power head of rotary drilling rig can meet larger diameter and the casing of bigger depth is buried.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of power head torsion increasing device, which is characterized in that comprising torque case and bracket, bracket one end is connect with torque case, separately
One end is extended with the claw that may be stuck on mast, makes bracket can be along mast vertical sliding motion by claw；
The torque case includes：Engage what is formed by gear with gear ring by sun wheel shaft, the planetary gear on planet carrier
Planetary gear speed reducing mechanism and the upper box and lower box for gripping planetary gear speed reducing mechanism, planetary gear speed reducing mechanism is by upper box under
Babinet is fastened on bracket；
Sun wheel shaft is hollow shaft, and formation can accommodate the space that drilling rod passes perpendicularly through；Sun wheel shaft upper end is used for defeated with power head
Outlet connects；Gear ring upper end is connect with upper box, and gear ring lower end is connect with lower box；Planet carrier lower end setting one is used for and needs
The lower connecting pin that inbuilt casing is attached.
2. power head torsion increasing device according to claim 1, which is characterized in that connected in planet carrier upper surface setting one
End, between the inside and sun wheel shaft of upper connecting pin and/or lower connecting pin respectively clamping setting one be placed on it is interior in sun wheel shaft
Bearing, inner bearing carry out axial restraint by being connected to the interior sealing seat of upper connecting pin and/or lower connecting pin.
3. power head torsion increasing device according to claim 1 or 2, which is characterized in that connect in planet carrier upper surface setting one
End is connect, clamping sets the company of being placed on respectively between upper connecting pin and/or the outside of lower connecting pin and upper box and/or lower box
The outer bearing on end and/or lower connecting pin is connect, outer bearing is carried out by the external seal seat being connected on upper box and/or lower box
Axial restraint.
4. power head torsion increasing device according to claim 3, which is characterized in that the inner bearing positioned at lower end also passes through limiting
Device is fixed in planet carrier, and the limiting device is circumferentially spaced segmentation structure.
5. power head torsion increasing device according to claim 1, which is characterized in that planet carrier is separate structure, including restocking
Body, lower frame and multiple connecting shafts of connection upper frame and lower frame；It is installed for accommodating in the space formed between adjacent connecting shaft
Planetary gear.
6. power head torsion increasing device according to claim 2, which is characterized in that be respectively arranged on upper frame and lower frame
For accommodating the mounting hole of planetary gear axis pin, planetary gear is installed on the space formed between adjacent connecting shaft by planetary gear axis pin
In.
7. power head torsion increasing device according to claim 1, which is characterized in that the inner wall setting one of sun wheel shaft is strengthened
Section, the wall thickness at strengthening segment is more than the inner wall thickness of other positions, and strengthening segment is located at planet carrier and the matched position of gear ring.
8. power head torsion increasing device according to claim 7, which is characterized in that the hollow shaft interior diameter range of sun wheel shaft
Between 300 millimeters to 800 millimeters.
9. power head torsion increasing device according to claim 1, which is characterized in that sun wheel shaft upper end and power head output terminal
It is connected by several axis pins, and axis pin axis direction is vertical with the power head centre of gyration.
10. a kind of rotary drilling rig comprising rotary digging host, mast, drilling rod and is fixed on mast and drilling rod can be driven to drill
Power head, which is characterized in that further include the power head described in any one claim in claim 1- claims 9
Torsion increasing device.
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 true CN108180260A (en) | 2018-06-19 |
| CN108180260B CN108180260B (en) | 2024-03-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810163811.1A Active CN108180260B (en) | 2018-02-27 | 2018-02-27 | Rotary drilling rig and power head torque increasing device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108180260B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN110863772A (en) * | 2019-11-07 | 2020-03-06 | 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 |
| CN114352185A (en) * | 2021-12-13 | 2022-04-15 | 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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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110863772A (en) * | 2019-11-07 | 2020-03-06 | 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 |
| CN114352185A (en) * | 2021-12-13 | 2022-04-15 | 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 |
| 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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| CN108180260B (en) | 2024-03-08 |
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