CN105464587A - Injection type through hydraulic DTH (Down-The-Hole) hammer - Google Patents
Injection type through hydraulic DTH (Down-The-Hole) hammer Download PDFInfo
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- CN105464587A CN105464587A CN201510808009.XA CN201510808009A CN105464587A CN 105464587 A CN105464587 A CN 105464587A CN 201510808009 A CN201510808009 A CN 201510808009A CN 105464587 A CN105464587 A CN 105464587A
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- valve
- hole
- guide pipe
- hammer
- piston
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Classifications
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- 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
Abstract
The invention discloses an injection type through hydraulic DTH (Down-The-Hole) hammer, which mainly comprises components including a double-passage joint, an upper joint, a piston, a sleeve valve, a case, a punch hammer body, a guide pipe, a hammering block, a lower joint, an ejector, an ejected device, a valve seat, a valve, a plunger piston and the like, wherein the upper part of the double-passage joint is connected with a drill pipe; the lower part of the double-passage joint is connected with the upper joint of the DTH hammer; the other end of the upper joint is connected with the case; the other end of the case is connected with the lower joint to form a whole; the lower part of the piston arranged in the sleeve valve is rigidly connected with the punch hammer body to form a valve hammer assembly; the two ends of the guide pipe are respectively inserted and connected into positioning holes formed in the bottom of the double-passage joint and the top of the hammering block; the ejector is arranged between the lower part of the upper joint and the guide pipe; the ejected device is arranged between the upper part of the piston and the guide pipe; and the valve arranged at the bottom of the sleeve valve and the plunger piston arranged at the top of the punch hammer body form a valve control mechanism capable of being opened and closed. The injection type through hydraulic DTH hammer is suitable for the large-caliber large-displacement high-pump-pressure and high-well-temperature work environment, and can enter the shaft bottom at the depth being thousands of meters to work by being combined with other underground hydraulic motors.
Description
Technical field
The present invention relates to drilling machinery field, especially be applied to oil drilling, the impact rotating wire line coring of scientific drilling creeps into, the reverse circulation drilling of heavy caliber impact rotating, heavy caliber impact rotating reacting cycle continous sampling are crept into and the through hydraulic hole drilling hammer of jet absorption type of mine and Foundation Design drilling well.
Background technology
Jet absorption type hydraulic hole drilling hammer belongs to prior art, such as the patent No.: described in the manual of " 85101970.6 ", " ZL201010579649.5 " and " CN104481396 "; But existing jet absorption type hydraulic hole drilling hammer is not through.Hollow-through air dth hammer has been a very ripe drilling tool, creeps into achieve extraordinary effect for reacting cycle continous sampling, is adopted by many units in charge of construction being applicable to this technique.But also have more drilling engineering, owing to there being high pressure fluid column to be not suitable for pneumatic down-hole hammer work in well, and the dust environmental pollution that pneumatic down-hole hammer construction produces seriously is prohibited to adopt.For overcoming the problems referred to above, in the early 1990s in last century, China has just had unit to develop and has achieved the through differential and double effect hydraulic in-the-hole hammer of fine test effect, but through hydraulic in-the-hole hammer fails to be applied to production so far.
Summary of the invention
The object of the present invention is to provide a kind of with mud or chemical grout for working media, be applicable to the through hydraulic hole drilling hammer of jet absorption type of heavy caliber, deep-well or ultradeep well, huge discharge, high back pressure; This hydraulic hole drilling hammer adopts jet absorption type operating principle, and retain the technical characteristic of jet absorption type hydraulic hole drilling hammer, be mainly used in impact rotating reverse circulation drilling, impact rotating reacting cycle continous sampling creeps into and creep into impact rotating wire line coring, can effectively improve drilling efficiency and quality, and reduce drilling cost.
The present invention is achieved through the following technical solutions:
The through hydraulic hole drilling hammer of a kind of jet absorption type, mainly comprises two channel joint, top connection, piston, sleeving valve, shell, block stamp body, guide pipe, hammering block, lower contact, ejector, holds the components such as spray apparatus, valve seat, valve and plunger; There is through hole at described two channel joint center, and periphery has liquid-through hole; Two channel joint top jointed rod, bottom is connected with the top connection of down-hole hammer, the top connection other end is connected with shell, the shell other end and lower contact connect and compose an entirety; Be arranged on piston lower portion in sleeving valve and block stamp body to be rigidly connected and to form valve and hammer assembly into shape; Hammering block is sleeved in lower contact, connects each other with transmission mechanism; Run through the guide pipe of top connection and valve hammer assembly, two is plugged on bottom two channel joint respectively with in the locating hole at hammering block top; Between top connection bottom and guide pipe, ejector is set; Arrange between upper piston area and guide pipe and hold spray apparatus, ejector to the annular space held between spray apparatus forms upper hydraulic cavities; The plunger at the valve bottom sleeving valve and block stamp body top forms the valve control mechanism that can open and close; Annular space between sleeving valve bottom valve to hammering block top outage forms lower hydraulic pressure chamber; On the same axis, and guide pipe and piston, piston and sleeving valve, sleeving valve and shell, be all set to movable sealing each other and coordinate, can rotate and slide axially under mutual sealing state for guide pipe, piston, sleeving valve and outer cover suit; Described valve hammer assembly is under the effect of working media jet, valve control mechanism is constantly closed and opens, control the pressure size alternately conversion between hydraulic cavities and lower hydraulic pressure chamber, promote piston and block stamp body axially constantly reciprocating impact motion impact hammering block, impact energy is passed to drill bit, and working media also constantly flows through lower hydraulic pressure chamber and enters shaft bottom from the outage of hammering block.
Preferably, described ejector comprises the nozzle be sleeved on outside guide pipe external cylindrical surface, nozzle carrier and guiding base; Be circular spray-hole between nozzle and guide pipe external cylindrical surface, change the circular spray-hole that different bore nozzle just can obtain different area.
Preferably, described ejector comprises the nozzle, nozzle carrier and the guiding base that are sleeved on guide pipe 7 external cylindrical surface, radial spray-hole for being made up of multiple aperture between nozzle and guide pipe external cylindrical surface, changes the radial spray-hole that different nozzles just can obtain different area.
Preferably, described be assemblied in upper piston area hold spray apparatus for holding spray joint part, removable hold to form between spray joint and guide pipe external cylindrical surface circularly hold spray orifice, change and different hold holding spray joint and just obtaining the circular of different area and hold spray orifice of spray orifice footpath, realize mating from the spray-hole of the different projected area of ejector.
Preferably, be positioned at the bottom of holding spray apparatus and be radially circumferentially evenly distributed with several diffusion holes, diffusion hole is communicated with cover valve insertion.
Preferably, in the through hole of described guide pipe epimere insertion two channel joint, movable sealing coordinates connected and can rotate and slide axially, and hypomere connects between piston and block stamp body.
Preferably, described guide pipe upper end is fixedly connected with at the top of two channel joint through hole, and hypomere and the through hole inwall movable sealing of piston coordinate and be connected and can rotate and slide axially.
Preferably, described guide pipe inserts from the upper port of through hole in the middle of two channel joint, through top connection, valve hammer assembly and hammering block, in the drill bit that lower end is fixedly connected on hammering block bottom on step.
Preferably, the hammering block be positioned at below valve hammer assembly is sleeved on lower contact and forms lower contact assembly by spline joint each other.
Advantage of the present invention and good effect:
The through hydraulic hole drilling hammer of this jet absorption type provided by the invention, with mud or chemical grout for working media, have that structure is simple, stable performance and the advantage such as resistance to back pressure properties is good, be applicable to the working environment of heavy caliber, huge discharge, high pump pressure, Gao Jingwen, can go into the well separately, also can with other underground liquid motor combination after slip into the dark shaft bottom of thousands of rice and work, making heavy caliber, deep-well or ultradeep well adopt impact rotating reacting cycle or wire line coring to creep into becomes possibility; To efficiency, quality and reduction drilling cost Be very effective that raising heavy caliber deep-well creeps into.
Accompanying drawing explanation
Fig. 1 is structural principle schematic diagram of the present invention
;
Fig. 2 is the schematic diagram that in the present invention, ejector adopts circular spray orifice;
Fig. 3 is the A-A section in Fig. 2;
Fig. 4 is the schematic diagram that in the present invention, ejector adopts radial spray orifice;
Fig. 5 is the B-B section in Fig. 4;
Fig. 6 holds spray apparatus schematic diagram in the present invention;
Fig. 7 is the C-C section in Fig. 6;
Fig. 8 is that in Fig. 1 of the present invention, guide pipe and ejector assemble schematic diagram;
Fig. 9 be in Fig. 1 of the present invention guide pipe with hold spray apparatus and assemble schematic diagram;
Figure 10 is guide pipe structural representation be fixed between piston and block stamp body in the present invention
;
Figure 11 is the structural representation that in the present invention, guide pipe is fixedly connected on two channel joint bottom
.
Figure 12 is that in the present invention, guide pipe inserts from the upper port of two channel joint intermediate throughholes, is positioned at the structural representation of step in the drill bit of hammering block bottom.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention and accompanying drawing thereof, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not paying the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Be the typical structure of the through hydraulic hole drilling hammer of jet absorption type of the present invention as shown in figs 1-9, by two channel joint 1, top connection 2, piston 3, sleeving valve 4, shell 5, block stamp body 6, guide pipe 7, hammering block 8, lower contact 9, ejector 10, hold the component such as spray apparatus 12, valve 16, plunger 17 and form, all component totally axis from the inside to the outside, are sequentially installed.Described two channel joint 1, be that a kind of liquid-through hole is distributed in the joint that tube wall is kept apart with the through hole of centre, working solution flows through two channel joint 1 liquid-through hole and enters ejector 10, and two channel joint 1 lower end and top connection 2 upper end are by being threaded into top connection assembly; Top connection 2 lower end is connected with shell 5 threaded upper ends; Shell 5 lower end is threaded with lower contact 9; Piston 3 puts into sleeving valve 4, and piston 3 hypomere is rigidly connected through valve 16 and block stamp body 6 and forms valve and hammer assembly into shape and be sleeved on shell 5 inner chamber; The hammering block 8 be positioned at below valve hammer assembly is sleeved on lower contact 9 spline joint formation lower contact assembly each other.Guide pipe 7 runs through top connection 2 and valve hammer assembly, and two is inserted respectively with in the locating hole at hammering block 8 top bottom two channel joint 1, and guide pipe 7 external cylindrical surface coordinates with the movable sealing of piston 3 hypomere endoporus; Top connection 2 bottom arranges ejector 10, and what the setting of piston 3 top was corresponding with ejector 10 holds spray apparatus 12, and ejector 10 to the annular space held between spray apparatus 12 forms upper hydraulic cavities 11; Hold the bottom of spray apparatus 12, radially circumferentially have equally distributed diffusion hole 13 to be communicated with cover valve insertion 14; Hold to form between spray apparatus 12 and guide pipe 7 external cylindrical surface and circularly hold spray orifice 22; Block stamp body 6 upper end is provided with the plunger 17 matched with the valve 16 of sleeving valve 4; Sleeving valve 4 bottom valve 16 and block stamp body 6 top plunger 17 form the valve control mechanism that can open and close; Annular space between sleeving valve 4 bottom valve 16 lower end to hammering block 8 upper surface forms lower hydraulic pressure chamber 18; Hammering block 8 is hollow structure, and end face arranges the outage 19 with hammering block inner space thereon.Guide pipe 7, piston 3, sleeving valve 4, shell 5 order suit on the same axis, is all set to movable sealing each other and coordinates, can each spinning and sliding axially under sealing state; Valve hammer assembly is under the effect of working media jet, its valve control mechanism is constantly closed and is opened, control hydraulic cavities 11 alternately to change with the pressure size of lower hydraulic pressure chamber 18, promote piston 3 together with block stamp body 6 along axial constantly reciprocating impact motion impact hammering block, impact energy is passed to drill bit, and working media also constantly flows through lower hydraulic pressure chamber 18 and enters shaft bottom from the outage 19 hammering block.
Erection sequence is: shell 5 is threaded with lower contact assembly
,valve hammer assembly loads in shell 5, guide pipe 7 is inserted through from holding spray apparatus 12 central through hole the locating hole that block stamp body 6 enters hammering block 8 top, then top connection assembly packed into guide pipe 7 and be connected with outer casing screw, so far guide pipe 7 is positioned in the locating hole on two channel joint 1 bottom and hammering block 8 top, keep the axiality with down-hole hammer entirety, and prevent guide pipe 7 endoporus to be communicated with upper hydraulic cavities 11; Inside and outside circle cylinder between guide pipe 7, piston 3, sleeving valve 4 and shell 5 four parts is movable sealing and coordinates, each other can each autorotation and sliding axially in sealed states; Meet above-mentioned requirements, install and terminate.
Operating principle: working media enters ejector 10 again from the injection at a high speed of circular spray-hole through the fluid course of two channel joint 1, due to entrainmenting and attached wall effect of jet, working media is close to guide pipe 7 outer wall and is entered and hold spray apparatus 12 in piston 3, flow through lower hydraulic pressure chamber 18 through diffusion hole 13, cover valve insertion 14 and valve 16, then the outage 19 entering hammering block 8 top is discharged to shaft bottom, this process is discharged from entering into, working media in upper hydraulic cavities 11 is sucked up to lower hydraulic pressure chamber 18 because of Involving velocity, cause hydraulic cavities 11 step-down and lower hydraulic pressure chamber 18 boosts, pressure differential acts on sleeving valve 4 and piston 3, because sleeving valve 4 quality is much smaller than piston 3, first rise to the valve journey upper limit from the valve seat 15 that formed by valve journey lower limit step, touch bottom top connection 2, piston 3 is moved upward by the hammer stroke lower limit at hammering block 8 top following closely together with block stamp body 6, be blocked when plunger 17 touches valve 16 fluid course, in upper hydraulic cavities 11, pressure raises, sleeving valve 4 return rapidly valve journey lower limit step place valve seat 15 and produce water attack promote piston 3 impact hammering block 8, so far valve 16 is opened, valve hammer assembly enters next impulse period, go round and begin again and ceaselessly impact.
Described ejector 10 as shown in Figure 8, it is made up of nozzle 23, nozzle carrier 24, guiding base 25, guide pipe 7 inserts guiding base 25, circular spray-hole 20 is formed between nozzle 23 and guide pipe 7 external cylindrical surface, change the circular spray-hole 20 that different bore nozzle 23 just can obtain different area, see Fig. 2 and Fig. 3.Fig. 4 and Fig. 5 is the schematic diagram of radial spray-hole 21.
The described spray apparatus 12 that holds is as shown in Fig. 6-7 and Fig. 9, form circularly hold spray orifice 22 by being assemblied in hold spray joint 26 and the guide pipe running through this joint that piston 3 can be changed, change and different hold holding spray joint 26 and just obtaining and different hold spray orifice 22 area of spray orifice footpath, realize mating with the spray-hole 20,21 of different area.
Guide pipe 7 shown in Figure 10, its lower end is fixed between piston 3 and block stamp body 6, and epimere inserts in two channel joint 1 through hole and coordinates with through hole movable sealing, can rotate and slide axially.
As shown in figure 11, its upper end is fixed on the top of two channel joint 1 through hole to described guide pipe 7, and hypomere coordinates with the through hole inwall movable sealing of piston 3, can rotate and slide axially.
As shown in figure 12, to described guide pipe 7 guide pipe 7 insert from the upper port of two channel joint 1 intermediate throughholes, through top connection 2, valve hammer assembly and hammering block 8, in the drill bit being positioned hammering block 8 bottom on step.
The through hydraulic hole drilling hammer of jet absorption type shown in Figure 10, Figure 11, Figure 12, structure and working principle and Fig. 1 are substantially identical, and difference is assembling and the locate mode of guide pipe 7.
The through hydraulic hole drilling hammer of jet absorption type described in Figure 10, guide pipe 7 lower end is fixed between piston 3 and block stamp body 6, and epimere inserts in two channel joint 1 through hole and coordinates with through hole movable sealing, can rotate and slide axially.
The through hydraulic hole drilling hammer of jet absorption type described in Figure 11, guide pipe 7 inserts from the upper port of two channel joint 1 intermediate throughholes, and be positioned at the top of two channel joint 1.
The through hydraulic hole drilling hammer of jet absorption type shown in Figure 12, guide pipe 7 inserts from the upper port of two channel joint 1 intermediate throughholes, through top connection 2, valve hammer assembly and hammering block 8, in the drill bit being positioned hammering block 8 bottom on step.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the through hydraulic hole drilling hammer of jet absorption type, mainly comprises two channel joint (1), top connection (2), piston (3), sleeving valve (4), shell (5), block stamp body (6), guide pipe (7), hammering block (8), lower contact (9), ejector (10), holds spray apparatus (12), valve seat (15), valve (16) and plunger (17); It is characterized in that: there is through hole at described two channel joint (1) center, and periphery has liquid-through hole; Two channel joint (1) top jointed rod, bottom is connected with the top connection (2) of down-hole hammer, top connection (2) other end is connected with shell (5), shell (5) other end and lower contact (9) connect and compose an entirety; Be arranged on piston (3) bottom in sleeving valve (4) and block stamp body (6) to be rigidly connected and to form valve and hammer assembly into shape; Hammering block (8) is sleeved in lower contact (9), connects each other with transmission mechanism; Run through the guide pipe (7) of top connection (2) and valve hammer assembly, two is plugged in the locating hole at two channel joint (1) bottom and hammering block (8) top respectively; Ejector (10) is set between top connection (2) bottom and guide pipe (7); Arrange between piston (3) top and guide pipe (7) and hold spray apparatus (12), ejector (10) to the annular space held between spray apparatus (12) forms upper hydraulic cavities (11); The valve (16) of sleeving valve (4) bottom forms the valve control mechanism that can open and close with the plunger (17) at block stamp body (6) top; Annular space between sleeving valve (4) bottom valve (16) to hammering block (8) top outage (19) forms lower hydraulic pressure chamber (18); Guide pipe (7), piston (3), sleeving valve (4) and shell (5) suit on the same axis, and guide pipe (7) is each other all set to movable sealing with sleeving valve (4) and sleeving valve (4) with shell (5) with piston (3), piston (3) to be coordinated, and can rotate and slide axially under mutual sealing state; Described valve hammer assembly is under the effect of working media jet, valve control mechanism is constantly closed and opens, the pressure size that control between hydraulic cavities (11) and lower hydraulic pressure chamber (18) is alternately changed, promote piston (3) and block stamp body (6) axially constantly reciprocating impact motion impact hammering block, impact energy is passed to drill bit, and working media also constantly flows through lower hydraulic pressure chamber (18) and enters shaft bottom from the outage (19) of hammering block.
2. the through hydraulic hole drilling hammer of jet absorption type according to claim 1, is characterized in that: described ejector (10) comprises the nozzle (23) be sleeved on outside guide pipe (7) external cylindrical surface, nozzle carrier (24) and guiding base (25); Be circular spray-hole (20) between described nozzle (23) and guide pipe (7) external cylindrical surface, change the circular spray-hole (20) that different bore nozzle (23) just can obtain different area.
3. the through hydraulic hole drilling hammer of jet absorption type according to claim 1, it is characterized in that: described ejector (10) comprises the nozzle (23) be sleeved on guide pipe (7) external cylindrical surface, nozzle carrier (24) and guiding base (25), radial spray-hole (21) for being made up of multiple aperture between nozzle (23) and guide pipe (7) external cylindrical surface, changes the radial spray-hole (21) that different nozzles (23) just can obtain different area.
4. the through hydraulic hole drilling hammer of the jet absorption type according to Claims 2 or 3, it is characterized in that: described in be assemblied in piston (3) top hold spray apparatus (12) for hold spray joint (26) part, removable hold to form between spray joint (26) and guide pipe external cylindrical surface circularly hold spray orifice (22), change and different hold holding spray joint (26) and just obtaining the circular of different area and hold spray orifice (22) of spray orifice footpath, realize mating from the spray-hole (20,21) of the different projected area of ejector (10).
5. the through hydraulic hole drilling hammer of jet absorption type according to claim 1, it is characterized in that: be positioned at the bottom of holding spray apparatus (12) and be radially circumferentially evenly distributed with several diffusion holes (13), diffusion hole (13) is communicated with cover valve insertion (14).
6. the through hydraulic hole drilling hammer of jet absorption type according to claim 1, it is characterized in that: in the through hole of described guide pipe (7) epimere insertion two channel joint (1), movable sealing coordinates connected and can rotate and slide axially, and hypomere connects between piston (3) and block stamp body (6).
7. the through hydraulic hole drilling hammer of jet absorption type according to claim 1, it is characterized in that: described guide pipe (7) upper end is fixedly connected with at the top of two channel joint (1) through hole, hypomere and the through hole inwall movable sealing of piston (3) coordinate and are connected and can rotate and slide axially.
8. the through hydraulic hole drilling hammer of jet absorption type according to claim 1, it is characterized in that: described guide pipe (7) inserts from the upper port of the middle through hole of two channel joint (1), through top connection (2), valve hammer assembly and hammering block (8), in the drill bit that lower end is fixedly connected on hammering block (8) bottom on step.
9. the through hydraulic hole drilling hammer of jet absorption type according to claim 1, is characterized in that: the hammering block (8) be positioned at below valve hammer assembly is sleeved on lower contact (9) and forms lower contact assembly by spline joint each other.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510808009.XA CN105464587B (en) | 2015-11-20 | 2015-11-20 | Jet absorption type penetrates hydraulic hole drilling hammer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510808009.XA CN105464587B (en) | 2015-11-20 | 2015-11-20 | Jet absorption type penetrates hydraulic hole drilling hammer |
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| CN105464587A true CN105464587A (en) | 2016-04-06 |
| CN105464587B CN105464587B (en) | 2017-12-19 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194093A (en) * | 2016-08-31 | 2016-12-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | The orientation of a kind of open sliding sleeve slightly solubility ball is shot through instrument and technique |
| CN107401385A (en) * | 2017-08-02 | 2017-11-28 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | One kind injection erosion instrument and its application |
| CN110173211A (en) * | 2019-06-21 | 2019-08-27 | 刘国经 | Using the jet absorption type hydraulic hole drilling hammer of disjunctor injection equipment |
| WO2021159621A1 (en) * | 2020-02-10 | 2021-08-19 | 中国地质大学（北京） | Novel two-stage boosting hydraulic impactor |
| CN114352188A (en) * | 2021-12-31 | 2022-04-15 | 核工业北京地质研究院 | Slide valve type valve control mechanism capable of improving working performance of hydraulic impactor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194093A (en) * | 2016-08-31 | 2016-12-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | The orientation of a kind of open sliding sleeve slightly solubility ball is shot through instrument and technique |
| CN106194093B (en) * | 2016-08-31 | 2019-04-16 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of open sliding sleeve is shot through tool and technique with the orientation of slightly solubility ball |
| CN107401385A (en) * | 2017-08-02 | 2017-11-28 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | One kind injection erosion instrument and its application |
| CN107401385B (en) * | 2017-08-02 | 2023-11-17 | 中国石油天然气集团有限公司 | Jet erosion tool and application thereof |
| CN110173211A (en) * | 2019-06-21 | 2019-08-27 | 刘国经 | Using the jet absorption type hydraulic hole drilling hammer of disjunctor injection equipment |
| CN110173211B (en) * | 2019-06-21 | 2020-09-01 | 刘国经 | Jet-suction type hydraulic down-the-hole hammer adopting conjoined injection mechanism |
| WO2021159621A1 (en) * | 2020-02-10 | 2021-08-19 | 中国地质大学（北京） | Novel two-stage boosting hydraulic impactor |
| CN114352188A (en) * | 2021-12-31 | 2022-04-15 | 核工业北京地质研究院 | Slide valve type valve control mechanism capable of improving working performance of hydraulic impactor |
| CN114352188B (en) * | 2021-12-31 | 2024-01-12 | 核工业北京地质研究院 | Slide valve type valve control mechanism capable of improving working performance of hydraulic impactor |
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Effective date of registration: 20221227 Address after: No. 2, Fumin Daying Hardware and Building Materials Industrial Park, Kunming, Yunnan 650499 Patentee after: Kunming Guojing hydraulic hammer manufacturing Co.,Ltd. Address before: Room 101, Unit 4, Building 2, Aidi Garden, No. 288, Hope Road, Kunming, Yunnan 650021 Patentee before: Liu Guojing |
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