CN107859494A - A kind of transit joint and down-the-hole air hammer and drilling rod with spiral deslagging diverter function - Google Patents
A kind of transit joint and down-the-hole air hammer and drilling rod with spiral deslagging diverter function Download PDFInfo
- Publication number
- CN107859494A CN107859494A CN201711241486.8A CN201711241486A CN107859494A CN 107859494 A CN107859494 A CN 107859494A CN 201711241486 A CN201711241486 A CN 201711241486A CN 107859494 A CN107859494 A CN 107859494A
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- Prior art keywords
- current divider
- spiral
- spiral deslagging
- deslagging
- joint
- Prior art date
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Links
- 238000005553 drilling Methods 0.000 title claims abstract description 56
- 210000000515 tooth Anatomy 0.000 claims abstract description 16
- 206010022000 influenza Diseases 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 2
- 230000008014 freezing Effects 0.000 abstract description 4
- 238000007710 freezing Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 15
- 239000007789 gas Substances 0.000 description 8
- 239000004575 stone Substances 0.000 description 6
- 206010060904 Freezing phenomenon Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
-
- 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
A kind of transit joint with spiral deslagging diverter function, including rear joint, rear joint one end are provided with spiral deslagging current divider, and the spiral deslagging current divider is provided with several helical tooths towards one end of rear joint；The external diameter of the spiral deslagging current divider is more than the maximum outside diameter of rear joint, rear joint with the hollow cavity that is connected is equipped with spiral deslagging current divider.Compared to prior art, the present invention is simple in construction, can effectively prevent bit freezing; building site will not produce shut-down phenomenon, and this product is designed as running stores in addition, protect the outer wall of drilling rod and impactor significantly; only need to change this product when changing, remaining part can greatly prolong the life-span.
Description
Technical field
The present invention relates to a kind of down-the-hole drilling tool of mine engineering, and in particular to a kind of with spiral deslagging diverter function
Transit joint and down-the-hole air hammer and drilling rod.
Background technology
The down-the-hole air hammer of mine engineering is a kind of using compressed air as power source, and rock drilling dynamic impact problem part is slipped into
In rock drilling hole, piston is controlled to make back and forth movement, down-the-hole of the impact configuration in impactor front end by the air distributing device in impactor
Drills for stone, impact energy is transferred to drill bit, by the rock drilling equipment of drill bit fractured rock.But existing down-the-hole air hammer row
The pressure at expulsion of slag is a steady state value, because whole power set are drilled in potential hole, so the increasing with drilling depth
Processing ore deposit geologic structure becomes increasingly complex, and the deslagging ability that drilling tool is influenceed by atmospheric pressure and gravity can progressively weaken, if
Deslagging, which has some setbacks, will duplicate brokenly essence, and the efficiency of drilling can substantially reduce, while the rock drilling breaking capacity of impactor also can
Reduce, cause the debris in hole cumulative, when the debris in hole is reached by the active force of atmospheric pressure and gravity and pressure at expulsion
During to balance, the bit freezing phenomenon that can not be lifted can only be rotated by just occurring, and is again turned on air valve and can not also solve problem；Pass
The precondition that the down-the-hole air hammer of system is capable of smooth rock drilling driving is that hole must be closed environment, the residual air of impactor discharge
Debris is led out by closed environment, when mining geology structure is drilled after explosion, because explosion produces high pressure
Shock wave can cause cracked inside mine, and residual air will drain from cracks, and debris will fall can not discharge in hole, lead
Cause bit freezing；Drilling rod is in rock drilling drilling, because surface has soft stone easily to fall into impactor, the stone of bulk once falls
Enter the residual air that impactor in hole is discharged to be not enough to blow out falling rocks outside hole, because drilling rod is one to save also in rock drilling driving
Pick up what is come, the deeper drilling rod connecting of hole drill it is longer easily cause brill to go down the eccentric distortion of appearance because drilling rod is flexible connection
Phenomenon, also easily there is bit freezing phenomenon this when.
The content of the invention
For the deficiency in the presence of prior art, the invention provides a kind of transition with spiral deslagging diverter function
Joint, bit freezing can be prevented, and drilling efficiency can be improved, debris can be driven to enter through fracture layers and into closed environment
Row deslagging, while falling rocks can also be ground.
To achieve the above object, present invention employs following technical scheme：
A kind of transit joint with spiral deslagging diverter function, including rear joint, rear joint one end are provided with spiral deslagging
Current divider, the spiral deslagging current divider are provided with several helical tooths towards one end of rear joint；The spiral deslagging current divider
External diameter be more than the maximum outside diameter of rear joint, rear joint with the hollow cavity that is connected is equipped with spiral deslagging current divider.
Further, the helical tooth have side parallel to helical gear shaft to blade, opposite side is into one with blade
The rake of angle is determined, formed with helicla flute between the blade and rake of adjoining spiral tooth.
Further, the rear joint is provided with connection screw thread, the spiral deslagging away from one end of spiral deslagging current divider
Current divider is annular.
Further, the spiral deslagging current divider is provided with connection internal thread or spiral deslagging in one end of rear joint
Current divider is provided with annular connecting portion of the external diameter less than spiral deslagging current divider away from one end of rear joint.
The transit joint with spiral deslagging diverter function of the present invention is applied widely, may be mounted on impactor
It can also be arranged on drilling rod, spiral deslagging current divider is in rotary course, helical tooth and spiral on spiral deslagging current divider
Tooth can give one mechanical spiral of debris upward component, break the balance for the pressure for falling the stone at transit joint, debris
Deslagging is smoothly completed under the upward component effect of spiral, the generation of bit freezing phenomenon can be prevented.
A kind of down-the-hole air hammer, including the described transit joint with spiral deslagging diverter function, in addition to have
The outer tube and drill bit of cavity body, one end of the outer tube are connected with the one end of transit joint with spiral deslagging current divider,
The other end is connected with drill bit；Distribution bar and piston with hollow cavity, distribution bar one end are provided with the hollow cavity of outer tube
It extend into the one end in piston and stretched into piston and is provided with radial symmetric and two stomatas being connected with distribution bar hollow cavity；
Piston both ends in outer tube are respectively between transit joint and drill bit formed with two chambers；Be additionally provided with piston can respectively with
Two air flues that two stomatas of distribution bar are connected, two air flue one end are connected with the hollow cavity in piston, and the other end leads to
To the two chambers at piston both ends；Hollow cavity external diameter in the rear joint is less than the hollow cavity in spiral deslagging current divider
External diameter, the hollow cavity of spiral deslagging current divider is interior to be provided with non-return valve and valve seat；Non-return valve one end is connected with valve seat and can be relative
Valve seat moves axially, and valve seat center is provided with the through hole of axial direction, and valve seat is connected away from one end of non-return valve with distribution bar and valve seat
Through hole is connected with the hollow cavity of distribution bar；One end that distribution bar is connected with valve seat is radially fixed in spiral deslagging current divider
On；Drill bit is connected by front connector with outer tube, and one end that drill bit is connected with front connector, which passes through front connector and deviated from piston, matches somebody with somebody
One end of gas bar is in contact.
The down-the-hole air hammer of the present invention, including the transit joint with spiral deslagging diverter function, transit joint is set
In the junction of impactor and drilling rod, drilling depth is unrestricted when in use, and deslagging is not influenceed by atmospheric pressure and gravity, mistake
Joint is crossed when being rotated with drilling rod, can give the mechanical spiral of junction one of impactor and drilling rod upward component, break
Fall the balance of the pressure of the stone at transit joint, impactor can smoothly be crept into and deslagging, drilling efficiency is raised significantly.
A kind of drilling rod, including the described transit joint with spiral deslagging diverter function, in addition to drilling rod body, drilling rod
Body one end is connected with the one end of the transit joint with spiral deslagging current divider, and the other end is connected with connector, connector
Connecting groove is additionally provided with towards one end of drilling rod body；Hollow cavity, the intrinsic middle cavity of drilling rod are additionally provided with drilling rod body
Body connects with the hollow cavity in rear joint and spiral deslagging current divider.
When the drilling rod of the present invention has falling rocks to fall on drilling rod during rock drilling drilling, helical tooth in spiral deslagging current divider
Blade can be used for the falling rocks that falls into of cutting when rotated, and rake can discharge the rubble after cutting transit joint, to carry
The operating efficiency of high drilling rod.
Compared to prior art, the present invention is simple in construction, can effectively prevent bit freezing, it is existing that building site will not produce shut-down
As, this product is designed as running stores in addition, protects the outer wall of drilling rod and impactor significantly, only needs to change this product when changing,
Remaining part can greatly prolong the life-span.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the transit joint embodiment one with spiral deslagging diverter function.
Fig. 2 is the knot of the spiral deslagging current divider in the transit joint embodiment one with spiral deslagging diverter function
Structure schematic diagram.
Fig. 3 is the overall structure diagram of the transit joint embodiment two with spiral deslagging diverter function.
Fig. 4 is the sectional view of the down-the-hole air hammer.
Fig. 5 is the structural representation of the drilling rod.
In figure：1st, rear joint；2nd, connection screw thread；3rd, spiral deslagging current divider；4th, helical tooth；5th, helicla flute；6th, blade；
7th, rake；8th, non-return valve；9th, valve seat；10th, distribution bar；11st, piston；12nd, outer tube；13rd, positioning sleeve；14th, snap ring；15th, it is preceding
Joint；16th, drill bit；17th, spring；18th, upper chamber；19th, lower chambers；20th, inlet chamber；21st, check valve pocket；22nd, drilling rod body；
23rd, connecting groove；24th, connector；25th, connecting portion；26th, internal thread.
Embodiment
The present invention is described in further detail below in conjunction with Figure of description, and provides embodiment.
Embodiment one：
As shown in Figure 1 and Figure 2, a kind of transit joint with spiral deslagging diverter function, has rear joint 1, rear joint one
End is provided with spiral deslagging current divider 3, and the spiral deslagging current divider 3 is provided with several helical tooths 4 towards one end of rear joint 1；
The external diameter of the spiral deslagging current divider 3 is more than the maximum outside diameter of rear joint 1, is all provided with rear joint 1 and spiral deslagging current divider 3
There is the hollow cavity being connected.The helical tooth 4 has blade 6 of the side parallel to the axial direction of helical tooth 4, and opposite side is and blade
6 angled rakes 7, formed with helicla flute 5 between the blade 6 and rake 7 of adjoining spiral tooth.Sword in helical tooth
Portion 6 can be used for cutting natural and graceful stone when rotated, and rake 7 is used to drive the rubble discharge transit joint after cutting, improves spiral shell
Revolve the effect of the deslagging shunting of deslagging current divider.The rear joint 1 is provided with connection screw thread away from one end of spiral deslagging current divider 3
2, the spiral deslagging current divider is annular.Spiral deslagging current divider 3 is provided with internal thread in one end of rear joint 1.Cross
Joint is crossed by internal thread with impactor or drilling rod to be connected.
Embodiment two：
As shown in figure 3, a kind of transit joint with spiral deslagging diverter function, has all technologies in embodiment one
Feature, difference are that spiral deslagging current divider 3 is less than spiral deslagging current divider 3 away from one end of rear joint 1 provided with external diameter
Annular connecting portion 25, settable external screw thread outside annular connecting portion 25.Transit joint can pass through annular connecting portion 25 and impactor
Or drilling rod is connected.
As shown in figure 4, a kind of down-the-hole air hammer, including the above-mentioned transit joint with spiral deslagging diverter function, also
Including outer tube 12 and drill bit 16 with hollow cavity, one end of the outer tube 12 is divided with transit joint with spiral deslagging
One end of stream device 3 is connected, and the other end is connected with drill bit 16；The distribution with hollow cavity is provided with the hollow cavity of outer tube 12
Bar 10 and piston 11, the one end of distribution bar 10 extend into the one end in piston 11 and stretched into piston 11 be provided with radial symmetric and with
Two stomatas that the hollow cavity of gas bar 10 is connected；
The both ends of piston 11 in outer tube 12 are respectively between transit joint and drill bit 16 formed with upper chamber 18 and cavity of resorption
Room 19；
Be additionally provided with two air flues that can be connected respectively with 10 two stomatas of distribution bar in piston 11, two air flue one end with
Hollow cavity in piston 11 is connected, and the other end leads to upper chamber 18 and the lower chambers 19 at the both ends of piston 11；
The external diameter of inlet chamber 20 in the rear joint 1 is less than the external diameter of check valve pocket 21 in spiral deslagging current divider 3, spiral shell
Non-return valve 8 and valve seat 9 are provided with the check valve pocket 21 of rotation deslagging current divider 3；The one end of non-return valve 8 is connected with valve seat 9 and can be relative
Valve seat 9 moves axially, the center of valve seat 9 be provided with axial direction through hole, valve seat 9 away from non-return valve 8 one end be connected with distribution bar 10 and
The through hole of valve seat 9 is connected with the hollow cavity of distribution bar 10；One end that distribution bar 10 is connected with valve seat 9 is radially fixed in spiral shell
Revolve on deslagging current divider 3；Drill bit 16 is connected by front connector 15 with outer tube 12, and one end that drill bit 16 is connected with front connector 15 is worn
Cross front connector 15 and be in contact with piston 11 away from one end of distribution bar 10.
Also include the positioning sleeve 13 and snap ring 14 being fixed in outer tube, positioning sleeve 13 is arranged on piston 11 and drill bit 16
The outside of contact jaw, snap ring 14 are fixed in outer tube and outside the drill bit 16 being socketed between positioning sleeve 13 and front connector.Positioning
Set 13 is positioned towards one end of piston by back-up ring, and the other end is bonded with snap ring end face；Snap ring other end and the end of front connector 15
Face is bonded.
The outer tube 12 and one end welding of the transit joint in embodiment one with spiral deslagging current divider 3 or bolt
Connection, the outside of the annular connecting portion for the transit joint that can also be enclosed in embodiment two are simultaneously welded or are threadedly coupled with it, spiral shell
The external diameter for revolving deslagging current divider 3 is more than or equal to the external diameter of outer tube 12.
Down-the-hole air hammer in the present invention in use, gases at high pressure enter check valve pocket 21 by the inlet chamber 20 of rear joint 1,
Gas is entered in distribution bar 10 by non-return valve 8 and valve seat, and one side gases at high pressure are continued traveling downwardly to through the endoporus of drill bit 16,
Debris ash caused by drill bit 16 being crept into blows to the both sides of drill bit, helps smooth deslagging；On the other hand, gases at high pressure can pass through
The hole of radial direction is connected with the air flue in piston 11 on distribution bar 10, when gases at high pressure are passed into shape between piston 11 and rear joint
Into upper chamber 18 in and pressure gradually increase when, you can promote that piston 11 is descending until to impact drill bit 16 relative with piston 11
One end, now drill bit 16 can by face of rock smash, contribute to drilling progress；When gases at high pressure are passed into piston 11
In the lower chambers 19 formed between drill bit 16 and when pressure gradually increases, you can promote piston stroking upward to leave drill bit 16, and then
Promote piston 11 to realize to move back and forth.Non-return valve 8 can prevent that pulp-water reflux enters in impactor during impactor impact rock, can also incite somebody to action
Compressed air is incorporated into outer tube 12.
As shown in figure 5, a kind of drilling rod, including the above-mentioned transit joint with spiral deslagging diverter function, in addition to bore
Bar body 22, the one end of drilling rod body 22 are connected with the one end of the transit joint with spiral deslagging current divider 3, the other end and company
Joint 24 is connected, and one end of connector 24 towards drilling rod body 22 is additionally provided with connecting groove 23；In being additionally provided with drilling rod body 22
Cavity body, the end welding or screw thread that drilling rod body 22 can be with the spiral deslagging current divider of the transit joint in embodiment one connect
Connect, weld or be threadedly coupled outside the connecting portion for the transit joint that can be also enclosed in embodiment two and with it；Drilling rod body 22 with
Connector 24 can also be connected through a screw thread by being weldingly connected or other are fixedly connected with mode and connected.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent substitution, and without departing from the objective and scope of technical solution of the present invention, it all should cover at this
Among the right of invention.
Claims (8)
- A kind of 1. transit joint with spiral deslagging diverter function, it is characterised in that：Including rear joint, rear joint one end is provided with Spiral deslagging current divider, the spiral deslagging current divider are provided with several helical tooths towards one end of rear joint；The spiral row The external diameter of slag current divider be more than rear joint maximum outside diameter, rear joint be equipped with spiral deslagging current divider be connected it is hollow Cavity.
- A kind of 2. transit joint with spiral deslagging diverter function according to claim 1, it is characterised in that：The spiral shell Rotation tooth have side parallel to helical gear shaft to blade, opposite side is the rake angled with blade, adjoining spiral Formed with helicla flute between the blade and rake of tooth.
- A kind of 3. transit joint with spiral deslagging diverter function according to claim 1, it is characterised in that：After described Joint is provided with connection screw thread away from one end of spiral deslagging current divider, and the spiral deslagging current divider is annular.
- A kind of 4. transit joint with spiral deslagging diverter function according to claim 1, it is characterised in that：The spiral shell Revolve deslagging current divider and connection internal thread or spiral deslagging current divider are provided with one end of rear joint away from one end of rear joint It is less than the annular connecting portion of spiral deslagging current divider provided with external diameter.
- A kind of 5. down-the-hole air hammer, it is characterised in that：Including there is spiral deslagging shunting work(described in claim any one of 1-4 The transit joint of energy, in addition to outer tube and drill bit with hollow cavity, one end and the transit joint of the outer tube carry One end of spiral deslagging current divider is connected, and the other end is connected with drill bit；Being provided with the hollow cavity of outer tube has hollow cavity Distribution bar and piston, distribution bar one end extend into the one end in piston and stretched into piston be provided with radial symmetric and with distribution bar Two stomatas that hollow cavity is connected；Piston both ends in outer tube are respectively between transit joint and drill bit formed with two chambers；Be additionally provided with two air flues that can be connected respectively with two stomatas of distribution bar in piston, two air flue one end with piston Hollow cavity is connected, and the other end leads to the two chambers at piston both ends；Hollow cavity external diameter in the rear joint is less than the hollow cavity external diameter in spiral deslagging current divider, the shunting of spiral deslagging Non-return valve and valve seat are provided with the hollow cavity of device；Non-return valve one end be connected with valve seat and can opposite valve seat axial movement, valve seat Center is provided with the through hole of axial direction, valve seat be connected away from one end of non-return valve with distribution bar and the through hole of valve seat and distribution bar it is hollow Cavity is connected；One end that distribution bar is connected with valve seat is radially fixed on spiral deslagging current divider；Drill bit passes through front connector It is connected with outer tube, one end that drill bit is connected with front connector is in contact through front connector and with piston away from one end of distribution bar.
- 6. down-the-hole air hammer according to claim 5, it is characterised in that：Also include being fixed on positioning sleeve in outer tube and Snap ring, positioning are set on the outside of the contact jaw of piston and drill bit, snap ring be fixed in outer tube and be socketed in positioning sleeve with Outside drill bit between front connector.
- 7. down-the-hole air hammer according to claim 5, it is characterised in that：The transit joint carries spiral deslagging current divider One end and outer tube weld or bolt connection, the external diameter of spiral deslagging current divider are more than or equal to the external diameter of outer tube.
- A kind of 8. drilling rod, it is characterised in that：Including the mistake with spiral deslagging diverter function described in claim any one of 1-4 Joint, in addition to drilling rod body are crossed, drilling rod body one end is connected with the one end of the transit joint with spiral deslagging current divider, The other end is connected with connector, and one end of connector towards drilling rod body is additionally provided with connecting groove；In being additionally provided with drilling rod body Cavity body, the intrinsic hollow cavity of drilling rod connect with the hollow cavity in rear joint and spiral deslagging current divider.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711241486.8A CN107859494B (en) | 2017-11-30 | 2017-11-30 | Transition joint with spiral slag discharging and flow dividing functions, down-the-hole impactor and drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711241486.8A CN107859494B (en) | 2017-11-30 | 2017-11-30 | Transition joint with spiral slag discharging and flow dividing functions, down-the-hole impactor and drill rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107859494A true CN107859494A (en) | 2018-03-30 |
| CN107859494B CN107859494B (en) | 2023-10-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711241486.8A Active CN107859494B (en) | 2017-11-30 | 2017-11-30 | Transition joint with spiral slag discharging and flow dividing functions, down-the-hole impactor and drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107859494B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798540A (en) * | 2018-05-21 | 2018-11-13 | 河南理工大学 | Spiral convex rib cuts deslagging drilling rod in the release of hole |
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| CN203499591U (en) * | 2013-08-14 | 2014-03-26 | 王海峰 | Thrust slag discharge spiral drilling rod for coal mine tunnel drilling |
| CN203702026U (en) * | 2013-12-11 | 2014-07-09 | 重庆博山工程机械设备有限公司 | Drill rod spiral residue discharge mechanism of drilling machine |
| CN103883247A (en) * | 2014-05-06 | 2014-06-25 | 西南石油大学 | High-frequency reciprocating torsion generator |
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| CN104863521A (en) * | 2015-06-01 | 2015-08-26 | 江苏和信石油机械有限公司 | Ocean drill rod connector |
| CN205858187U (en) * | 2016-06-30 | 2017-01-04 | 冀凯河北机电科技有限公司 | A kind of colliery is with quick deslagging augers |
| CN106246099A (en) * | 2016-10-13 | 2016-12-21 | 刘守进 | Spiral soil compaction down-the-hole embedding rock device and pile making method |
| CN106437493A (en) * | 2016-11-01 | 2017-02-22 | 山东中瑞工程机械有限公司 | Down-hole hammer for deep-hole operation |
| CN206129142U (en) * | 2016-11-01 | 2017-04-26 | 山东中瑞工程机械有限公司 | Energy -efficient compact downhole air hammer |
| CN207470137U (en) * | 2017-11-30 | 2018-06-08 | 宜昌钻山甲科技有限责任公司 | A kind of transit joint and down-the-hole air hammer and drilling rod with spiral deslagging diverter function |
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| CN108798540A (en) * | 2018-05-21 | 2018-11-13 | 河南理工大学 | Spiral convex rib cuts deslagging drilling rod in the release of hole |
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