CN103372474A - Adaptor for increasing piston work pressure of hydraulic breaking hammer - Google Patents
Adaptor for increasing piston work pressure of hydraulic breaking hammer Download PDFInfo
- Publication number
- CN103372474A CN103372474A CN2012101774890A CN201210177489A CN103372474A CN 103372474 A CN103372474 A CN 103372474A CN 2012101774890 A CN2012101774890 A CN 2012101774890A CN 201210177489 A CN201210177489 A CN 201210177489A CN 103372474 A CN103372474 A CN 103372474A
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- Prior art keywords
- low pressure
- connector
- pressure
- mentioned
- breaking hammer
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
- E02F3/966—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of hammer-type tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/005—Attachments or adapters placed between tool and hammer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2222/00—Materials of the tool or the workpiece
- B25D2222/72—Stone, rock or concrete
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
The invention relates to an adaptor for increasing piston work pressure of hydraulic breaking hammer. A plurality of work oil through orifices are arranged at preset intervals at the inner side of a lower-pressure exhausting adaptor on the upper side of a lower-pressure supply pipe of a cylinder. The work oil through orifices suppress instant discharge of lower-pressure work oil through the lower-pressure exhausting adaptor, thereby increasing the work pressure of a piston of a chisel and increasing the breaking force of the breaking hammer. A first stop portion is formed in the lower-pressure exhausting adaptor to convenient and easily setting and increasing the work pressure for the orifices, and the rock-breaking efficiency of a piston with increasing of the work pressure of the piston is increased. A snap ring arranged at one side of the orifices prevents the play of the orifices and provides firm support.
Description
Technical field
The present invention relates to extend the low pressure that arranges in outlet one side of the low pressure supply pipe of the cylinder of the working oil of supplying with high pressure discharges the inside of connector (OUT-Adapter) and is provided with the throttle orifice (Orifice) that is formed with a plurality of working oil through holes, suppress to discharge the flowing of operating on low voltage oil of (OUT), the pistons work pressure of hydraulic breaking hammer that can increase thus the operating pressure of the piston that hits chisel increases uses connector, the pistons work pressure that particularly relates to a kind of following hydraulic breaking hammer increases use connector: the inboard of the low pressure discharge connector that arranges in top one side of the low pressure supply pipe of the cylinder of hydraulic breaking hammer, be formed with the first stop section and the second stop section, be provided with the throttle orifice that is formed with the predetermined thickness of having of a plurality of working oil through holes and sectional area by predetermined interval in the inside of above-mentioned the first stop section, inside in the second stop section of a side that is arranged at above-mentioned the first stop section, be provided be used to the snap ring that moves about and support that prevents above-mentioned throttle orifice (snap ring), on the other hand, discharge the rear of connector in above-mentioned low pressure and extend communicatively the working oil inflow pipe that is provided with the rake that is formed with sloped-end, the low pressure that arranges by the inboard of discharging connector in the low pressure of the top of the low pressure supply pipe that is arranged at cylinder one side is thus discharged connector, the inboard of discharging connector in the low pressure of top one side that is arranged at cylinder low pressure supply pipe is provided with the throttle orifice that is formed with a plurality of working oil through holes by predetermined interval, suppressed to discharge to suppress to discharge when connector is discharged the phenomenon that operating on low voltage oil moment of (OUT) discharges by low pressure to flow by above-mentioned throttle orifice, thereby form back pressure in low-pressure passage, thus, can increase the operating pressure of the piston that hits chisel, and the hitting power of raising quartering hammer, come conveniently by the first stop section that the inside of discharging connector (OUT-Adapter) in above-mentioned low pressure forms, operating pressure increase throttle orifice easily is set, the broken rock operating efficiency that passes through the piston that quartering hammer carries out that improves that the operating pressure follow piston increases, support securely fixing when preventing moving about of throttle orifice by the snap ring (snap ring) that arranges in a side of above-mentioned throttle orifice, discharge the front ends of connector in above-mentioned low pressure and extend communicatively the working oil inflow pipe that is provided with the rake that is formed with inclination, prevent that the inside of above-mentioned low pressure discharge connector from flowing into the operating on low voltage oil of moment.
Background technology
General known hydraulic breaking hammer as shown in Figure 1, be provided with the chisel 111 for fractured rock in 110 inboards, front of quartering hammer 100, be provided with for the protecgulum 112 that supports chisel 111 at above-mentioned front 110 downsides, inboard at the cylinder 120 of the upside that is positioned at above-mentioned front 110 is provided be used to the piston 130 that hits above-mentioned chisel 111, be provided with hydraulic control valve 140 be used to the up and down stroke of controlling above-mentioned piston 130 in above-mentioned cylinder 120 1 sides, be formed with low pressure supply pipe 150 for the working oil of supplying with high pressure at the downside of above-mentioned hydraulic control valve 140, and be provided with inside in the top of above-mentioned low pressure supply pipe 150 side and be formed with low pressure discharge pipe 161 and be used for the low pressure that working oil with low pressure flow into fuel tank (not shown) and discharge connector (OUT-Adapter) 160.
Thus, shown in the major part sectional structure chart that the low pressure of the hydraulic breaking hammer of Fig. 2 is discharged connector (OUT-Adapter), supply with when the hydraulic control valve 140 of the inboard by being arranged at cylinder 120 in the situation of working oil (oil) of high pressure, when the working oil of above-mentioned high pressure flow into the bottom of piston 130 by low pressure supply pipe 150, act on the lower end large-diameter portion compression zone sectional area of above-mentioned piston 130, after making above-mentioned piston 130 carry out vertical motion to top, flow out to the low pressure stream, when the vertical motion of above-mentioned piston 130 finishes (top dead-centre), above-mentioned hydraulic control valve 140 is in open state, the working oil of high pressure flow into chamber compression zone P one side on the large-diameter portion on the top that is positioned at above-mentioned piston 130 via above-mentioned hydraulic control valve 140, make above-mentioned piston 130 carry out again descending stroke, thus, the strike effect to object is carried out on the top that above-mentioned piston 130 descends and hits chisel 111.
And, when above-mentioned piston 130 descends, the working oil of high pressure is finished working oil that piston hits stroke (declines) by the interior casing chamber of cylinder, and the low pressure discharge pipe 161 of the discharge connector (OUT-Adapter) 160 by low pressure supply pipe 140 flow into fuel tank (not shown).At this moment, further improve the pressure that acts on piston upper portion pressurized section one side that is used for making piston strike chisel, make piston with stronger force blow chisel.
But, in the hydraulic breaking hammer of the rising of carrying out as mentioned above piston and decline effect, exist quartering hammer before piston 130 is about to hit chisel 111 with acceleration, cause acting on the shortcoming that the operating pressure of piston 130 upper portion pressurized sections reduces.
And, because the pressure loss of operating on low voltage oil, when existing the operating pressure of the chisel 111 by piston 130 to reduce, reduce the hitting power of quartering hammer, the cycle of the chisel 111 by above-mentioned piston 130 reduces, and the performance of hydraulic breaking hammer such as reduces significantly at a lot of problems.
Summary of the invention
The problem that solves
The present invention proposes for the problem of improving aforesaid prior art, its purpose is to provide a kind of pistons work pressure of following hydraulic breaking hammer to increase and use connector: the inboard at the low pressure discharge connector of the top one side setting of the low pressure supply pipe of cylinder is formed with the first stop section and the second stop section, be provided with the throttle orifice that is formed with the predetermined thickness of having of a plurality of working oil through holes and sectional area by predetermined interval in the inside of above-mentioned the first stop section, inside in the second stop section of a side that is arranged at above-mentioned the first stop section, be provided be used to the snap ring that moves about and support that prevents above-mentioned throttle orifice (snap ring), discharge the place ahead of connector in above-mentioned low pressure and extend communicatively the working oil inflow pipe that the rake that is formed with sloped-end is set, the inboard of discharging connector in the low pressure of the top of cylinder low pressure supply pipe one side setting is provided with the throttle orifice that is formed with a plurality of working oil through holes by predetermined interval, suppress mobile by phenomenon and the inhibition discharge of the oily moment discharge of the operating on low voltage of low pressure discharge connector discharge (OUT) by above-mentioned throttle orifice, thus, can increase the operating pressure of the piston that hits chisel, and the hitting power of raising quartering hammer, come conveniently by the first stop section that the inside of discharging connector (OUT-Adapter) in above-mentioned low pressure forms, operating pressure increase throttle orifice easily is set, the broken rock operating efficiency that passes through the piston that quartering hammer carries out that improves that the operating pressure follow piston increases, support securely fixing when preventing moving about of throttle orifice by the snap ring (snap ring) that arranges in a side of above-mentioned throttle orifice, discharge the front ends of connector in above-mentioned low pressure and extend communicatively the working oil inflow pipe that is provided with the rake that is formed with inclination, prevent that above-mentioned low pressure from discharging the pistons work pressure of hydraulic breaking hammer that the inside of connector flows into the operating on low voltage oil of moment and increasing and use connector.
The means of dealing with problems
As the technological means that is used for achieving the above object, a kind of pistons work pressure increase connector of hydraulic breaking hammer is provided among the present invention, pistons work pressure at this hydraulic breaking hammer increases with in the connector, be provided with the chisel for fractured rock in the inboard, front of quartering hammer, be provided with for the protecgulum that supports chisel at above-mentioned front downside, inboard at the cylinder of the upside that is positioned at above-mentioned front is provided be used to the piston that hits above-mentioned chisel, be provided with hydraulic control valve be used to the up and down stroke of controlling above-mentioned piston in a side of above-mentioned cylinder, be formed with low pressure supply pipe for the working oil of supplying with high pressure at the downside of above-mentioned hydraulic control valve, and be provided with inside in the top of above-mentioned low pressure supply pipe one side and be formed with the low pressure discharge pipe and be used for the low pressure that working oil with low pressure flow into fuel tank and discharge connector (OUT-Adapter), the pistons work pressure increase of above-mentioned hydraulic breaking hammer is characterised in that with connector, the low pressure that arranges in the top of the low pressure supply pipe of above-mentioned cylinder one side is discharged the inboard of connector, be formed with the first stop section and the second stop section, be provided with the throttle orifice that is formed with the predetermined thickness of having of a plurality of working oil through holes and sectional area by predetermined interval in the inside of above-mentioned the first stop section, inside in the second stop section of a side that is arranged at above-mentioned the first stop section, be provided be used to the snap ring that moves about and support that prevents above-mentioned throttle orifice, discharge the rear of connector in above-mentioned low pressure and integrally extend communicatively the working oil inflow pipe that is provided with the rake that is formed with sloped-end.
And, the invention is characterized in that the front ends inside of discharging the low pressure discharge pipe of connector in above-mentioned low pressure is provided with buffer unit, this buffer unit is used for preventing breakage when carrying out extending being connected of the bindiny mechanism that arranges with flexible pipe.
And, the invention is characterized in that the throttle orifice that above-mentioned inside in the first stop section arranges is provided with more than one a plurality ofly, in the throttle orifice that the inside of above-mentioned the first stop section arranges, is formed with a working oil through hole.
And then, the invention is characterized in that the inboard of discharging connector in above-mentioned low pressure is formed with boss, with the sectional area of formation much smaller than the size of the pipeline diameter of above-mentioned low pressure discharge pipe.
The effect of invention
As mentioned above, pistons work pressure increase connector according to hydraulic breaking hammer of the present invention, has following outstanding effect, the inboard of discharging connector in the low pressure of the top one side setting of the low pressure supply pipe of cylinder is provided with the throttle orifice that is formed with a plurality of working oil through holes by predetermined interval, suppress mobile by phenomenon and the inhibition discharge of the oily moment discharge of the operating on low voltage of low pressure discharge connector discharge (OUT) by above-mentioned throttle orifice, thus, can increase the operating pressure of the piston that hits chisel, and the hitting power of raising quartering hammer, come conveniently by the first stop section that the inside of discharging connector (OUT-Adapter) in above-mentioned low pressure forms, operating pressure increase throttle orifice easily is set, the broken rock operating efficiency that passes through the piston that quartering hammer carries out that improves that the operating pressure follow piston increases, support securely fixing when preventing moving about of throttle orifice by the snap ring (snap ring) that arranges in a side of above-mentioned throttle orifice, discharge the front ends of connector in above-mentioned low pressure and extend communicatively the working oil inflow pipe that is provided with the rake that is formed with inclination, prevent that the inside of above-mentioned low pressure discharge connector from flowing into the operating on low voltage oil of moment.
Among the present invention specific embodiment diagram and explanation have been carried out, but offer some clarification at this, in the scope that does not exceed by the main idea of the present invention of appending claims definition or technical field, the general technical staff of the technical field of the invention can easily carry out multiple transformation and variation to the present invention.
Description of drawings
Fig. 1 is the normal cross-section structure chart of general hydraulic breaking hammer.
Fig. 2 is the major part sectional structure chart that the low pressure of existing hydraulic breaking hammer is discharged connector (OUT-Adapter).
Fig. 3 is the major part sectional structure chart of using connector according to the pistons work pressure increase of hydraulic breaking hammer of the present invention.
Fig. 4 is that hydraulic breaking hammer pistons work pressure of the present invention increases the plane structure chart with connector.
Fig. 5 is that hydraulic breaking hammer pistons work pressure of the present invention increases the state that the arranges sectional structure chart with connector.
Fig. 6 is that the pistons work pressure of hydraulic breaking hammer according to another embodiment of the present invention increases the major part sectional structure chart with connector.
The specific embodiment
Below, with reference to accompanying drawing embodiments of the invention are described in detail.
Fig. 3 is the major part sectional structure chart of using connector according to the pistons work pressure increase of hydraulic breaking hammer of the present invention, Fig. 4 is that hydraulic breaking hammer pistons work pressure of the present invention increases the plane structure chart with connector, Fig. 5 is that hydraulic breaking hammer pistons work pressure of the present invention increases the state that the arranges sectional structure chart with connector, contact with Fig. 1, also the present invention will be described will to give identical mark for identical part.
Namely, be provided with the chisel 111 for fractured rock in 110 inboards, front of quartering hammer 100, be provided with for the protecgulum 112 that supports chisel 111 at above-mentioned front 110 downsides, inboard at the cylinder 120 of the upside that is positioned at above-mentioned front 110 is provided be used to the piston 130 that hits above-mentioned chisel 111, is provided with hydraulic control valve 140 be used to the up and down stroke of controlling above-mentioned piston 130 in a side of above-mentioned cylinder 120.
And, be provided with low pressure supply pipe 150 for the working oil of supplying with high pressure at the downside of above-mentioned hydraulic control valve 140, and the top of above-mentioned low pressure supply pipe 150 side be provided with inner form low pressure discharge pipe 161 and be used for the low pressure that working oil with low pressure flow into fuel tank (not shown) discharge connector (OUT-Adapter) 160.
And, the inboard of discharging connector 160 in above-mentioned low pressure is formed with the first stop section 170 and the second stop section 180, be provided with the throttle orifice 190 that is formed with the predetermined thickness of having of a plurality of working oil through holes 191 and sectional area by predetermined interval in the inside of above-mentioned the first stop section 170, inside in the second stop section 180 of a side that is arranged at above-mentioned the first stop section 170, be provided be used to the snap ring that moves about and support 200 that prevents above-mentioned throttle orifice 190, discharge the rear of connector 160 in above-mentioned low pressure and integrally extend communicatively the working oil inflow pipe 210 that is provided with the rake 211 that is formed with sloped-end.
And then the front ends of discharging the low pressure discharge pipe 161 of connector 160 in above-mentioned low pressure is provided with buffer unit 220, and this buffer unit 220 is used for preventing breakage when carrying out extending being connected of the B of bindiny mechanism that arranges with flexible pipe H.
Below, effect of the present invention and the effect that consists of as mentioned above is described in detail.
Namely, extremely shown in Figure 5 such as Fig. 1, hydraulic control valve 140 in the outside by being arranged at cylinder 120 is supplied with in the situation of the working oil (oil) that high pressure is arranged, when the working oil of above-mentioned high pressure flow into the bottom of piston 130 by low pressure supply pipe 150, act on the lower end large-diameter portion compression zone sectional area of above-mentioned piston 130, after making above-mentioned piston 130 carry out vertical motion to top, flow out to the low pressure stream.
And, when the vertical motion of above-mentioned piston 130 finishes (top dead-centre), above-mentioned hydraulic control valve 140 is in open state, the working oil of high pressure flow into chamber compression zone P one side on the large-diameter portion on the top that is positioned at above-mentioned piston 130 via above-mentioned hydraulic control valve 140, make above-mentioned piston 130 carry out again descending stroke, thus, the strike effect to object is carried out on the top that above-mentioned piston 130 descends and hits chisel 111.
At this moment, when the piston 130 of the hydraulic breaking hammer of the rising of carrying out as mentioned above piston and decline effect descends, the working oil of high pressure is via low pressure supply pipe 150, the low pressure discharge pipe 161 of discharging connector (OUT-Adapter) 160 at a part of working oil by low pressure flow in the situation of fuel tank (not shown), after the inboard that the low pressure of the top one side setting of the low pressure supply pipe 150 of above-mentioned cylinder 120 is discharged connector 160 is formed with the first stop section 170 and the second stop section 180, be provided with the throttle orifice 190 that is formed with the predetermined thickness of having of a plurality of working oil through holes 191 and sectional area by predetermined interval in the inside of above-mentioned the first stop section 170.
At this moment, the throttle orifice 190 in the inside of being located at above-mentioned the first stop section 170 is provided with more than one a plurality of, is formed with a working oil through hole 191 in the throttle orifice of the inside of being located at above-mentioned the first stop section 170.
And, inside in the second stop section 180 of a side of above-mentioned the first stop section 170, be provided be used to the snap ring that moves about and support 200 that prevents above-mentioned throttle orifice 190, suppressing to discharge connector 160 by above-mentioned low pressure by above-mentioned throttle orifice 190 discharges the phenomenon that operating on low voltage oil moment of (OUT) discharges and suppresses to discharge mobile, thus, can increase the operating pressure of the piston 130 that hits chisel 111, and improve the hitting power of above-mentioned quartering hammer 100, improve the broken rock operating efficiency that the operating pressure follow piston 130 increases, support securely when preventing moving about of throttle orifice by the snap ring 200 in a side setting of above-mentioned throttle orifice 190 fixing.
Unceasingly, discharge the rear of connector 160 in above-mentioned low pressure and integrally extend communicatively the working oil inflow pipe 210 that is provided with the rake 211 that is formed with sloped-end, prevent that the inside of above-mentioned low pressure discharge connector from flowing into the operating on low voltage oil of moment, by the inboard buffer unit 220 that arranges of low pressure discharge pipe 161 front ends of discharging connector 160 in above-mentioned low pressure, when carrying out extending being connected of the B of bindiny mechanism that arranges with flexible pipe H, prevent breakage.
Additionally, Fig. 6 is that the pistons work pressure of hydraulic breaking hammer according to another embodiment of the present invention increases the major part sectional structure chart with connector, the inboard of discharging connector 160 in above-mentioned low pressure need not to arrange other throttle orifice 190, be formed with boss T with the sectional area of formation much smaller than the size of the pipeline diameter of above-mentioned low pressure discharge pipe 161, prevent from flowing into to the inside of above-mentioned low pressure discharge connector 160 the operating on low voltage oil of moment.
Description of reference numerals
100: quartering hammer 110: front
111: chisel 112: protecgulum
120: cylinder 130: piston
140: hydraulic control valve 150: the low pressure supply pipe
160: low pressure is discharged connector (OUT-Adapter) 161: the low pressure discharge pipe
180: the second stop sections, 170: the first stop sections
190: throttle orifice 191: the working oil through hole
200: snap ring 210: the working oil inflow pipe
211: rake 220: buffer unit
Claims (5)
1. the pistons work pressure of hydraulic breaking hammer increase connector is used in the connector in the pistons work pressure increase of this hydraulic breaking hammer,
Be provided with the chisel (111) for fractured rock in the inboard, front (110) of quartering hammer (100),
Be provided with for the protecgulum (112) that supports chisel (111) at described front (110) downside,
Inboard at the cylinder (120) of the upside that is positioned at described front (110) is provided be used to the piston that hits described chisel (111) (130),
Be provided with hydraulic control valve (140) be used to the up and down stroke of controlling described piston (130) in a side of described cylinder (120),
Be formed with low pressure supply pipe (150) for the working oil of supplying with high pressure at the downside of described hydraulic control valve (140),
And be provided with inside in the top of described low pressure supply pipe (a 150) side and be formed with low pressure discharge pipe (161) and be used for the low pressure that working oil with low pressure flow into fuel tank (not shown) and discharge connector (160), the pistons work pressure increase of described hydraulic breaking hammer is characterised in that with connector
The low pressure that arranges in the top of the low pressure supply pipe (150) of described cylinder (a 120) side is discharged the inboard of connector (160), is formed with the first stop section (170) and the second stop section (180),
Be provided with in the inside of described the first stop section (170) by what predetermined interval was formed with a plurality of working oil through holes (191) and have predetermined thickness and a throttle orifice of sectional area (190),
Inside in second stop section (180) of a side that is arranged at described the first stop section (170) is provided be used to the snap ring that moves about and support (200) that prevents described throttle orifice (190),
Discharge the rear of connector (160) in described low pressure and integrally extend communicatively the working oil inflow pipe (210) that is provided with the rake (211) that is formed with sloped-end.
2. the pistons work pressure of hydraulic breaking hammer according to claim 1 increases and to use connector, it is characterized in that, the front ends inside of discharging the low pressure discharge pipe (161) of connector (160) in described low pressure is provided with buffer unit (220), and this buffer unit (220) is used for preventing breakage when carrying out extending being connected of the bindiny mechanism (B) that arranges with flexible pipe (H).
3. connector is used in the increase of the pistons work pressure of hydraulic breaking hammer according to claim 1, it is characterized in that, the throttle orifice (190) in that the inside of described the first stop section (170) arranges is provided with more than one a plurality of.
4. connector is used in the increase of the pistons work pressure of hydraulic breaking hammer according to claim 1, it is characterized in that, in the throttle orifice (190) that the inside of described the first stop section (170) arranges, is formed with a working oil through hole (191).
5. the pistons work pressure of hydraulic breaking hammer according to claim 1 increases and to use connector, it is characterized in that, the inboard of discharging connector (160) in described low pressure is formed with boss (T), with the sectional area of formation much smaller than the size of the pipeline diameter of described low pressure discharge pipe (161).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120045654A KR101315420B1 (en) | 2012-04-30 | 2012-04-30 | An out-adapter for increasing working pressure of the piston for hydraulic breaker |
| KR10-2012-0045654 | 2012-04-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103372474A true CN103372474A (en) | 2013-10-30 |
Family
ID=49458683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101774890A Pending CN103372474A (en) | 2012-04-30 | 2012-05-31 | Adaptor for increasing piston work pressure of hydraulic breaking hammer |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2013230543A (en) |
| KR (1) | KR101315420B1 (en) |
| CN (1) | CN103372474A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110935534A (en) * | 2019-11-22 | 2020-03-31 | 中国石油天然气集团有限公司 | Secondary grinder for drill plug scraps of screw drill and secondary grinding method for drill plug scraps |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57151489U (en) * | 1981-03-20 | 1982-09-22 | ||
| JPS60142083U (en) * | 1984-02-29 | 1985-09-20 | 株式会社小松製作所 | Seal devices such as hydraulic breakers |
| CN85202026U (en) * | 1985-05-27 | 1986-06-11 | 沈阳风动工具厂 | Differential pressure type oil distribution mechanism |
| EP1632636A1 (en) * | 2004-09-03 | 2006-03-08 | Sandvik Tamrock Oy | Rock breaking machine and lubricating method |
| CN201070589Y (en) * | 2007-08-03 | 2008-06-11 | 湘潭中德高科技有限公司 | Automatic mixed liquid breaking hammer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0763942B2 (en) * | 1986-12-20 | 1995-07-12 | マツダ株式会社 | Gas type hydraulic impact tool |
| KR100343888B1 (en) * | 2000-05-09 | 2002-07-20 | 주식회사 동남중공업 | Breaker using in nitrogen gas and hydraulic pressure |
| JP3906984B2 (en) | 2002-05-02 | 2007-04-18 | 株式会社デンソー | Fuel injection device and method of manufacturing flow rate control member thereof |
| SE528081C2 (en) | 2004-08-25 | 2006-08-29 | Atlas Copco Constr Tools Ab | Hydraulic impact mechanism |
-
2012
- 2012-04-30 KR KR1020120045654A patent/KR101315420B1/en not_active IP Right Cessation
- 2012-05-31 CN CN2012101774890A patent/CN103372474A/en active Pending
- 2012-11-22 JP JP2012255876A patent/JP2013230543A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57151489U (en) * | 1981-03-20 | 1982-09-22 | ||
| JPS60142083U (en) * | 1984-02-29 | 1985-09-20 | 株式会社小松製作所 | Seal devices such as hydraulic breakers |
| CN85202026U (en) * | 1985-05-27 | 1986-06-11 | 沈阳风动工具厂 | Differential pressure type oil distribution mechanism |
| EP1632636A1 (en) * | 2004-09-03 | 2006-03-08 | Sandvik Tamrock Oy | Rock breaking machine and lubricating method |
| CN201070589Y (en) * | 2007-08-03 | 2008-06-11 | 湘潭中德高科技有限公司 | Automatic mixed liquid breaking hammer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110935534A (en) * | 2019-11-22 | 2020-03-31 | 中国石油天然气集团有限公司 | Secondary grinder for drill plug scraps of screw drill and secondary grinding method for drill plug scraps |
| CN110935534B (en) * | 2019-11-22 | 2021-03-16 | 中国石油天然气集团有限公司 | Secondary grinder for drill plug scraps of screw drill and secondary grinding method for drill plug scraps |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013230543A (en) | 2013-11-14 |
| KR101315420B1 (en) | 2013-10-07 |
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Application publication date: 20131030 |