CN103290874A - A front cover of breaker - Google Patents
A front cover of breaker Download PDFInfo
- Publication number
- CN103290874A CN103290874A CN2012101772217A CN201210177221A CN103290874A CN 103290874 A CN103290874 A CN 103290874A CN 2012101772217 A CN2012101772217 A CN 2012101772217A CN 201210177221 A CN201210177221 A CN 201210177221A CN 103290874 A CN103290874 A CN 103290874A
- Authority
- CN
- China
- Prior art keywords
- protecgulum
- drill steel
- mentioned
- quartering hammer
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- B25D17/24—Damping the reaction force
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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)
- Earth Drilling (AREA)
Abstract
The invention relates to a following front cover of a breaker. A cover projection projects towards a lower side of a boss combined with the front cover of a lower part of a housing of the breaker, so that contact area of the front cover of the breaker inserted in the cover projection is widened, and wearing and crack of the front cover supporting a breaker stem caused by huge impact and shock of the breaker stem can be further reduced. A relatively large falling part is arranged on an end of a stem through hole inside the above cover projection and is used for preventing damage of the breaker stem caused by horizontal swinging of the impact of the breaker stem in advance. Through an inclined part connected with the above falling part, a wearing state of the front cover can be determined conveniently and easily with the naked eyes without separating the breaker stem from the above front cover in addition and detecting the wearing state. Life of the front cover contacted with the above breaker stem is further prolonged.
Description
Technical field
The present invention relates to reduce the drill steel that the quartering hammer (Breaker) installed in the excavator takes place and support this crushing hammar drill rod protecgulum wearing and tearing and crack and can prevent the protecgulum of quartering hammer of the drill steel breakage of above-mentioned quartering hammer, the protecgulum that particularly relates to a kind of following quartering hammer: behind the inboard of the protecgulum of being combined with the bottom of the shell of quartering hammer and drill steel guiding mechanism that the downside interpolation is formed with the drill steel pilot hole, the side-prominent protuberance that covers thereon, the contact area of the crushing hammar drill rod of interpolation in the above-mentioned drill steel guiding mechanism is further broadened, thus, can prevent wearing and tearing and the crack of the protecgulum of this crushing hammar drill rod of support of causing because of the great impact of crushing hammar drill rod and vibrations etc. in advance, by inboard and downside interpolation and the outstanding drill steel guiding mechanism to above-mentioned protecgulum, prevent the breakage of the crushing hammar drill rod that causes by moving about about the impact of following crushing hammar drill rod in advance, when the great lifting of above-mentioned crushing hammar drill rod causes the wearing and tearing of drill steel guiding mechanism, can make things convenient for, easily only need to decompose the drill steel guiding mechanism of being combined with above-mentioned shell and change, when reduce changing the financial burden that protecgulum causes thus, be extruded with to the downside of the boss portion of the protecgulum of being combined with the bottom of the shell of above-mentioned quartering hammer and cover protuberance, contact area at the crushing hammar drill rod of this interpolation is broadened, thus, can further reduce the wearing and tearing and the crack that cause the protecgulum that supports this crushing hammar drill rod because of the great impact of crushing hammar drill rod and vibrations etc., the inclined end portion that forms by the drill steel through hole downside end in the inboard of above-mentioned lid protuberance, can with the naked eye make things convenient for, easily confirm the state of wear of protecgulum, and need not from above-mentioned protecgulum additionally to separate crushing hammar drill rod and detect state of wear, and further prolong the protecgulum of quartering hammer in the life-span of the protecgulum that contacts with above-mentioned crushing hammar drill rod.
Background technology
In general, be connected with the arm of the front end of the suspension rod of excavator and carrying out in the quartering hammer of various building operations, the strike of the strike piston of the inside by being arranged at shell is hit object and is carried out comminution process between protecgulum and the crushing hammar drill rod that liftably arranges at above-mentioned shell downside.
Namely, in the structure of existing quartering hammer, as shown in Figure 1, inside at the shell 20 of quartering hammer 10 is provided with the strike piston 21 that carries out lifting by cylinder, inner lower at above-mentioned shell 20 is provided with protecgulum 30 between boss portion 31, be formed with drill steel through hole 32 in the inboard of above-mentioned protecgulum 30, thus, crushing hammar drill rod 40 liftably carries out interpolation.
Thus, hit the crushing hammar drill rod 40 in the inner lower setting of above-mentioned shell 20 when the strike piston 21 that liftably arranges in shell 20 inside of above-mentioned quartering hammer 10 rises and descends by the action of cylinder, carry out strike and the comminution process of objects by above-mentioned crushing hammar drill rod 40.
Fig. 2 is the normal cross-section structure chart at the protecgulum of the inner lower setting of the shell of existing quartering hammer, in the inner lower of above-mentioned shell 20 between boss portion 31 and the inside of the protecgulum 30 that arranges, be formed with and carry out guide effect so that crushing hammar drill rod 40 carries out the drill steel through hole 32 of lifting swimmingly, above-mentioned crushing hammar drill rod 40 is carried out swimmingly along drill steel through hole 32 and is risen and down maneuver.
But, aforesaid crushing hammar drill rod 40 is because the great vibrations that produce when hitting object in the building site and carrying out comminution process etc., move about about making above-mentioned crushing hammar drill rod 40 greatly take place, under aforesaid situation, the drill steel through hole 32 of the protecgulum 30 of support and guiding crushing hammar drill rod 40 easily weares and teares, and be formed obliquely wearing and tearing as shown in Figure 2, have the very big shortcoming that the life-span make above-mentioned protecgulum 30 becomes extremely short.
And then, the crushing hammar drill rod 40 that drill steel through hole 32 by above-mentioned protecgulum 30 obtains the lifting guiding also will because of about move about easily damaged, and when confirming drill steel through hole 32 state of wear of above-mentioned drill steel 30, can't with the naked eye confirm state of wear owing to the inner crushing hammar drill rod 40 that inserts, need isolate protecgulum 30 and crushing hammar drill rod 40 respectively from the inside of above-mentioned shell 20, and there is more problem in the state of wear of confirming drill steel through hole 32 by other detector one by one etc.
Summary of the invention
The problem that solves
The present invention proposes in order to improve aforesaid existing problem, its purpose is to provide a kind of protecgulum of following quartering hammer: behind the inboard of the protecgulum of being combined with the bottom of the shell of quartering hammer and drill steel guiding mechanism that the downside interpolation is formed with the drill steel pilot hole, the side-prominent protuberance that covers thereon, the contact area of the crushing hammar drill rod of interpolation in the above-mentioned drill steel guiding mechanism is further broadened, thus, can prevent from causing because of the great impact of crushing hammar drill rod and vibrations etc. wearing and tearing and the crack of the protecgulum that supports this crushing hammar drill rod in advance, by inboard and downside interpolation and the outstanding drill steel guiding mechanism to above-mentioned protecgulum, prevent the breakage of the crushing hammar drill rod that causes by moving about about the impact of following crushing hammar drill rod in advance, when the great lifting of above-mentioned crushing hammar drill rod causes the wearing and tearing of drill steel guiding mechanism, can make things convenient for, easily only need to decompose the drill steel guiding mechanism of being combined with above-mentioned shell and change, reduce the protecgulum of the quartering hammer of the financial burden that the replacing protecgulum causes thus.
And, the object of the present invention is to provide a kind of protecgulum of following quartering hammer: be extruded with to the downside of the boss portion of the protecgulum of being combined with the bottom of the shell of above-mentioned quartering hammer and cover protuberance, contact area at the crushing hammar drill rod of this interpolation is broadened, thus, can further reduce the wearing and tearing and the crack that cause the protecgulum that supports this crushing hammar drill rod because of the great impact of crushing hammar drill rod and vibrations etc., the inclined end portion that forms by the inboard drill steel through hole downside end at above-mentioned lid protuberance, can with the naked eye make things convenient for, easily confirm the state of wear of protecgulum, and need not from above-mentioned protecgulum additionally to separate crushing hammar drill rod and detect state of wear, and further prolong the protecgulum of quartering hammer in the life-span of the protecgulum that contacts with above-mentioned crushing hammar drill rod.
The means of dealing with problems
As the means that are used for achieving the above object, a kind of protecgulum of quartering hammer is provided among the present invention, inside at the shell of quartering hammer is provided with the strike piston that carries out lifting by cylinder, inner lower at above-mentioned shell is provided with protecgulum, be formed with the drill steel through hole in the inboard of above-mentioned protecgulum, at this interpolation crushing hammar drill rod up and down, the protecgulum of above-mentioned quartering hammer is characterised in that, the inside of the protecgulum that arranges in the inner lower of above-mentioned shell, in be inserted with the drill steel guiding mechanism, be formed with the drill steel pilot hole of interpolation crushing hammar drill rod to the inside at this drill steel guiding mechanism, at this moment, inner lower at above-mentioned protecgulum is formed with the pin holddown groove, this pin holddown groove is close to fixing between spring catch and above-mentioned drill steel guiding mechanism, at the downside end of above-mentioned drill steel guiding mechanism between the stop section, its downside integratedly outstanding being formed with cover protuberance, be formed with the rake of predetermined oblique angle at this lid protuberance, periphery at above-mentioned lid protuberance is formed with a plurality of bolt through holes, is combined with the bottom of shell with the lid protuberance that makes above-mentioned drill steel guiding mechanism by joint bolt to fixedly install.
And the present invention is characterized in that, is formed with the pin holddown groove in the inner lower of above-mentioned protecgulum, and this pin holddown groove is close to regularly between spring catch and above-mentioned drill steel guiding mechanism and is arranged.
And then the present invention is characterized in that, the downside end at the drill steel pilot hole of above-mentioned drill steel guiding mechanism is formed with the inclined end portion of inserting smoothly and taking out for crushing hammar drill rod.
In addition, a kind of protecgulum of quartering hammer is provided among the present invention, inside at the shell of quartering hammer is provided with the strike piston that carries out lifting by cylinder, inner lower at above-mentioned shell is provided with protecgulum, be formed with the drill steel through hole in the inboard of above-mentioned protecgulum, at this interpolation crushing hammar drill rod up and down, the protecgulum of above-mentioned quartering hammer is characterised in that, at the downside to the protecgulum of the drill steel through hole interpolation of above-mentioned shell, be formed with for the boss portion that supports above-mentioned protecgulum, the rake that tilts between circular processing at a predetermined angle at the downside of above-mentioned boss portion outstanding being formed with integratedly covers protuberance, inboard drill steel through hole downside end at above-mentioned lid protuberance is formed be used to the inclined end portion that prevents the breakage that moving about of crushing hammar drill rod causes.
The effect of invention
Protecgulum according to quartering hammer of the present invention, has following outstanding effect, behind the inboard of the protecgulum of being combined with the bottom of the shell of quartering hammer and drill steel guiding mechanism that the downside interpolation is formed with the drill steel pilot hole, the side-prominent protuberance that covers thereon, the contact area of the crushing hammar drill rod of interpolation in the above-mentioned drill steel guiding mechanism is further broadened, thus, can prevent the wearing and tearing and the crack that cause the protecgulum that supports this crushing hammar drill rod because of the great impact of crushing hammar drill rod and vibrations in advance, by inboard and downside interpolation and the outstanding drill steel guiding mechanism to above-mentioned protecgulum, prevent the breakage of the crushing hammar drill rod that causes by moving about about the impact of following crushing hammar drill rod in advance, when the great lifting of above-mentioned crushing hammar drill rod causes the wearing and tearing of drill steel guiding mechanism, can make things convenient for, easily only need to decompose the drill steel guiding mechanism of being combined with above-mentioned shell and change, reduce thus and change the financial burden that protecgulum causes.
And, has following effect, be extruded with to the downside of the boss portion of the protecgulum of being combined with the outer casing underpart of above-mentioned quartering hammer and cover protuberance, contact area at the crushing hammar drill rod of this interpolation is broadened, thus, can further reduce the wearing and tearing and the crack that cause the protecgulum that supports this crushing hammar drill rod because of the great impact of crushing hammar drill rod and vibrations etc., the inclined end portion that forms by the inboard drill steel through hole downside end at above-mentioned lid protuberance, can with the naked eye make things convenient for, easily confirm the state of wear of protecgulum, and need not from above-mentioned protecgulum additionally to separate crushing hammar drill rod and detect state of wear, and further prolong the life-span of the protecgulum that contacts with above-mentioned crushing hammar drill rod.
Among the present invention certain embodiments 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 that is provided with the state of general protecgulum at the downside of the shell of quartering hammer.
Fig. 2 is the normal cross-section structure chart of the protecgulum of Fig. 1.
Fig. 3 is the normal cross-section structure chart that is provided with the state of protecgulum and drill steel guiding mechanism at the downside according to the shell of quartering hammer of the present invention.
Fig. 4 is the major part normal cross-section structure chart of the shell of quartering hammer of the present invention and the drill steel guiding mechanism that arranges at the downside of protecgulum.
Fig. 5 is the normal cross-section structure chart that is provided with the state of protecgulum at the downside of the shell of according to another embodiment of the present invention quartering hammer.
Fig. 6 is based on the bonding state major part normal cross-section structure chart of the protecgulum of Fig. 5.
The specific embodiment
Below, with reference to accompanying drawing embodiments of the invention are described in detail.
Fig. 3 is the normal cross-section structure chart that is provided with the state of protecgulum and drill steel guiding mechanism at the downside according to the shell of quartering hammer of the present invention, Fig. 4 is the major part normal cross-section structure chart of the shell of quartering hammer of the present invention and the drill steel guiding mechanism that arranges at the downside of protecgulum, inside at the shell 120 of quartering hammer 110 is provided with the strike piston 121 that carries out lifting by cylinder, be provided with protecgulum 130 in the inside of above-mentioned shell 120, be formed with drill steel through hole 131 in the inboard of above-mentioned protecgulum 130, thus, make crushing hammar drill rod 140 interpolation liftably.
And, the inside of the protecgulum 130 that arranges in the inner lower of above-mentioned shell 120, in be inserted with drill steel guiding mechanism 150, be formed with the drill steel pilot hole 151 of interpolation crushing hammar drill rod 140 to the inside at this drill steel guiding mechanism 150, at this moment, inner lower at above-mentioned protecgulum 130 is formed with pin holddown groove 132, be close to setting regularly at this pin holddown groove 132 between spring catch 160 and above-mentioned drill steel guiding mechanism 150, at the downside end of above-mentioned drill steel guiding mechanism 150 between stop section 170, its downside integratedly outstanding being formed with cover protuberance 180, be formed with the rake R of predetermined oblique angle at this lid protuberance 180, periphery at above-mentioned lid protuberance 180 is formed with a plurality of bolt through holes 190, is combined fixing with the bottom of shell 120 with the lid protuberance 180 that makes above-mentioned drill steel guiding mechanism 150 by joint bolt 200.
And, at the downside end of the drill steel pilot hole 151 of above-mentioned drill steel guiding mechanism 150, be formed for the inclined end portion of inserting smoothly and taking out 210 of crushing hammar drill rod 140.
Below, to being described by the effect of the present invention and the effect that constitute as mentioned above.
As shown in Figures 3 and 4, in the quartering hammer 110 of carrying out strike such as excavation operation, inside at the protecgulum 130 of the inner lower of being located at shell 120, be formed with and carry out guide effect so that crushing hammar drill rod 140 carries out the drill steel through hole 131 of lifting swimmingly, above-mentioned crushing hammar drill rod 140 is carried out swimmingly along drill steel through hole 131 and is risen and down maneuver.
And, inside at above-mentioned protecgulum 130, have in interpolation under the state of drill steel guiding mechanism 150 of the drill steel pilot hole 151 that forms oriented inboard interpolation crushing hammar drill rod 140, inner lower at above-mentioned protecgulum 130 is formed with pin holddown groove 132, between spring catch 160, above-mentioned drill steel guiding mechanism 150 and protecgulum 130 are fixed at pin holddown groove 132 with the state of being close to mutually.
At this moment, at the downside end of above-mentioned drill steel guiding mechanism 150 between stop section 170, its downside integratedly outstanding being formed with cover protuberance 180, be formed with the lid protuberance 180 of the rake R of predetermined oblique angle at this lid protuberance 180, thereby the length of the drill steel pilot hole 151 that the inside that makes above-mentioned drill steel guiding mechanism 150 forms and the length of above-mentioned lid protuberance 180 correspondingly lengthen, and the contact area at the crushing hammar drill rod 140 of this interpolation is broadened, thus, can further reduce because of the great impact of crushing hammar drill rod 140 and vibrations etc. and cause the protecgulum 130 that supports this crushing hammar drill rod and wearing and tearing and the crack of drill steel guiding mechanism 150, by the rake R weight reduction of above-mentioned inclination, can prevent in advance crushing hammar drill rod 140 about the breakage of moving about and causing.
Particularly, periphery at above-mentioned lid protuberance 180 is formed with a plurality of bolt through holes 190, be combined fixing with the bottom of shell 120 with the lid protuberance 180 that makes above-mentioned drill steel guiding mechanism 150 by joint bolt 200, in the great lifting of above-mentioned crushing hammar drill rod 140 and when causing the wearing and tearing of drill steel guiding mechanism 150, can make things convenient for, easily only need to decompose with the drill steel guiding mechanism 150 of above-mentioned shell 120 combinations and change, reduce thus and change the financial burden that protecgulum 130 causes.
And then, drill steel pilot hole 151 downside ends at above-mentioned drill steel guiding mechanism 150 are formed with inclined end portion 210, and the drill steel pilot hole 151 inner insertions of the above-mentioned drill steel guiding mechanism 150 that can lead are also carried out insertion smoothly and the taking-up of the crushing hammar drill rod 140 of lifting.
In addition, Fig. 5 is the normal cross-section structure chart that is provided with the state of protecgulum at the downside of the shell of according to another embodiment of the present invention quartering hammer, Fig. 6 is based on the bonding state major part normal cross-section structure chart of the protecgulum of Fig. 5, shell 220 inside at quartering hammer 210 are provided with the strike piston 221 that carries out lifting by cylinder, be provided with protecgulum 230 in the inside of above-mentioned shell 220, be formed with drill steel through hole 231 in the inboard of above-mentioned protecgulum 230, thus, make crushing hammar drill rod 240 interpolation liftably.
And, at the downside to the protecgulum 230 of drill steel through hole 221 interpolations of above-mentioned shell 220, be formed with for the boss portion 231 that supports above-mentioned protecgulum 230, the rake 250 that tilts between circular processing at a predetermined angle at the downside of above-mentioned boss portion 231 outstanding being formed with integratedly covers protuberance 270, drill steel through hole 232 downside ends in the inboard of above-mentioned lid protuberance 270 are formed be used to the inclined end portion 260 that prevents the breakage that moving about of crushing hammar drill rod 240 causes.
Thus, carry out the quartering hammer 210 that hits operation and carry out the guide effect that makes crushing hammar drill rod 240 carry out lifting swimmingly in the inboard of the protecgulum 230 of the inside of shell 220 setting, at this moment, be extruded with to boss portion 231 downsides of the protecgulum 230 of being combined with shell 220 bottoms of above-mentioned quartering hammer 210 and cover protuberance 270, contact area at the crushing hammar drill rod 240 of this interpolation is broadened, thus, can further reduce wearing and tearing and the crack of the protecgulum 230 of this crushing hammar drill rod of support that great impact that crushing hammar drill rod 240 takes place and vibrations etc. cause.
And, drill steel through hole 232 downside ends in the inboard of above-mentioned lid protuberance 270 are formed with inclined end portion 260, the inclined end portion 260 that forms by inboard drill steel through hole 232 downside ends at above-mentioned lid protuberance 270, can with the naked eye make things convenient for, easily confirm the state of wear of protecgulum 230, and need not from above-mentioned protecgulum 230 additionally to separate crushing hammar drill rod 240 and detect state of wear, and further prolong the life-span of the protecgulum 230 that contacts with above-mentioned crushing hammar drill rod 240.
Description of reference numerals
110: quartering hammer 120: shell
121: hit piston 130: protecgulum
131: drill steel through hole 132: the pin holddown groove
140: crushing hammar drill rod 150: the drill steel guiding mechanism
151: drill steel pilot hole 160: spring catch
170: stop section 180: the lid protuberance
190: bolt through hole 200: joint bolt
210: inclined end portion R: rake
Claims (4)
1. the protecgulum of a quartering hammer, inside at the shell of quartering hammer is provided with the strike piston that carries out lifting by cylinder, inner lower at described shell is provided with protecgulum, be formed with the drill steel through hole in the inboard of described protecgulum, at this drill steel through hole interpolation crushing hammar drill rod up and down, the protecgulum of described quartering hammer is characterised in that
The inside of the protecgulum that arranges in the inner lower of described shell, in be inserted with the drill steel guiding mechanism, be formed with the drill steel pilot hole of interpolation crushing hammar drill rod to the inside at this drill steel guiding mechanism, at the downside end of described drill steel guiding mechanism between the stop section, its downside integratedly outstanding being formed with cover protuberance, this lid protuberance is formed with the rake of predetermined oblique angle, periphery at described lid protuberance is formed with a plurality of bolt through holes, is combined fixing with the bottom of shell with the lid protuberance that makes described drill steel guiding mechanism by joint bolt.
2. the protecgulum of quartering hammer according to claim 1 is characterized in that, is formed with the pin holddown groove in the inner lower of described protecgulum, is close to regularly between spring catch and described drill steel guiding mechanism at this pin holddown groove to arrange.
3. the protecgulum of quartering hammer according to claim 1 is characterized in that, the downside end at the drill steel pilot hole of described drill steel guiding mechanism is formed with the inclined end portion of inserting smoothly and taking out for crushing hammar drill rod.
4. the protecgulum of a quartering hammer, inside at the shell of quartering hammer is provided with the strike piston that carries out lifting by cylinder, inner lower at described shell is provided with protecgulum, be formed with the drill steel through hole in the inboard of described protecgulum, at this interpolation crushing hammar drill rod up and down, the protecgulum of described quartering hammer is characterised in that
At the downside to the protecgulum of the drill steel through hole interpolation of described shell, be formed with for the boss portion that supports described protecgulum, the rake that tilts between circular processing at a predetermined angle at the downside of described boss portion outstanding being formed with integratedly covers protuberance, downside end at the drill steel through hole of the inboard of described lid protuberance is formed be used to the inclined end portion that prevents the breakage that moving about of crushing hammar drill rod causes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120019887A KR20130098068A (en) | 2012-02-27 | 2012-02-27 | A front cover of breaker |
| KR10-2012-0019887 | 2012-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103290874A true CN103290874A (en) | 2013-09-11 |
Family
ID=49092364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101772217A Pending CN103290874A (en) | 2012-02-27 | 2012-05-31 | A front cover of breaker |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2013173218A (en) |
| KR (1) | KR20130098068A (en) |
| CN (1) | CN103290874A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113106829A (en) * | 2020-12-25 | 2021-07-13 | 罗玉琴 | Road quartering hammer is used in engineering construction |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3257634B1 (en) * | 2016-06-17 | 2019-02-27 | Sandvik Mining and Construction Oy | Arrangement in an impact unit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010022227A1 (en) * | 2000-03-16 | 2001-09-20 | Thomas Deimel | Protective apparatus for preventing the infiltration of contaminants in a fluid-operated percussion device |
| CN201088916Y (en) * | 2007-09-26 | 2008-07-23 | 南京银茂铅锌矿业有限公司 | Air bruising hammer and hammerhead thereof |
| KR20110115474A (en) * | 2010-04-15 | 2011-10-21 | 주식회사수산중공업 | A front cover of breaker |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5235923Y2 (en) * | 1972-03-10 | 1977-08-16 | ||
| JPS52156103A (en) * | 1976-06-22 | 1977-12-26 | Konan Electric Co | Buffer apparatus for impact of chisel for breaker |
| DE2654616A1 (en) * | 1976-12-02 | 1978-07-27 | Salzgitter Maschinen Ag | Hammer drill lubricating chamber - has sealing rings each end and gaps near end of inserted tool for flow to gears |
| JPS5837570Y2 (en) * | 1980-10-22 | 1983-08-24 | 丸紅建設機械販売株式会社 | tool holder |
-
2012
- 2012-02-27 KR KR1020120019887A patent/KR20130098068A/en not_active Application Discontinuation
- 2012-05-31 CN CN2012101772217A patent/CN103290874A/en active Pending
- 2012-11-22 JP JP2012255869A patent/JP2013173218A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010022227A1 (en) * | 2000-03-16 | 2001-09-20 | Thomas Deimel | Protective apparatus for preventing the infiltration of contaminants in a fluid-operated percussion device |
| CN201088916Y (en) * | 2007-09-26 | 2008-07-23 | 南京银茂铅锌矿业有限公司 | Air bruising hammer and hammerhead thereof |
| KR20110115474A (en) * | 2010-04-15 | 2011-10-21 | 주식회사수산중공업 | A front cover of breaker |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113106829A (en) * | 2020-12-25 | 2021-07-13 | 罗玉琴 | Road quartering hammer is used in engineering construction |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20130098068A (en) | 2013-09-04 |
| JP2013173218A (en) | 2013-09-05 |
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Application publication date: 20130911 |