CN100349658C - Hydraulic pressure crusher - Google Patents
Hydraulic pressure crusher Download PDFInfo
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- CN100349658C CN100349658C CN 200410047654 CN200410047654A CN100349658C CN 100349658 C CN100349658 C CN 100349658C CN 200410047654 CN200410047654 CN 200410047654 CN 200410047654 A CN200410047654 A CN 200410047654A CN 100349658 C CN100349658 C CN 100349658C
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- control valve
- hammer piston
- pneumatic hammer
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- piston
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Abstract
To provide a hydraulic breaker of simple structure provided with a simple circuit and capable of showing breaking force more than that of a pneumatic breaker having the same mass, and driveable by a compact hydraulic source. In this hydraulic breaker having a hammer piston for hammering a tool and a control valve for switching flow of operating fluid in relation to the hammer piston, the control valve is arranged in a central part of a breaker main body close to an upper part of the hammer piston, and this hydraulic breaker is provided with a means for making the operating fluid work to the hammer piston through a hollow part, vertically passing through the control valve, during a hammering stroke of the hammer piston.(C)2005,JPO&NCIPI.
Description
Technical field
The present invention relates to the improvement of hydraulic breaker.
Background technology
Up to now, each company in the world has developed various types of disintegrating machines.Wherein, with hydraulic pressure being configured to of hydraulic breaker of power source: the pneumatic hammer piston is configured in sliding freely on the pressure cylinder part of main body, thereby make this pneumatic hammer reciprocating motion of the pistons impact the instruments such as chisel of lower end by hydraulic pressure, admittedly for it has the following advantages: the efficiency height, noise is low, can utilize the hydraulic power of building machinery, and dust is raised up, the danger of also not freezing when cold etc. are so constantly popularized.
But, hydraulic breaker up to now is as understanding in No. 3378029 grade of Japan Patent, when making the pneumatic hammer piston quicken to descend for impact tool, when the rising operation of pneumatic hammer piston, the high pressure action oil of upper chambers that is accumulated in main body in advance is by to the port of action oil phase for the outside of the mobile control valve that switches of pneumatic hammer piston, and via the thin via hole that passes main body, and supply to the upper piston chamber that the upper portion pressurized face of pneumatic hammer piston is arranged in with being parallel to control valve.
Therefore, the loop that internal structure and action oil are flowed through is all very complicated, and the pressure loss is big.Its result compares with the pneumatics disintegrating machine, and impact force (crushing force) is relatively poor, becomes the main cause that obstruction will further be popularized from now on.
Summary of the invention
The present invention makes in order to eliminate the problems referred to above point, its purpose is to provide a kind of hydraulic breaker, this hydraulic breaker has the simple structure and the loop that can reduce the pressure loss, can drive with small-sized hydraulic power source, and can give play to crushing force greater than the pneumatics disintegrating machine of equal quality.
In order to achieve the above object, the present invention is ingenious to have utilized the relation that is specifically designed to the concavo-convex and valve opening by periphery to switch the control valve that flows of hydraulic pressure, makes the action oil pressure directly act on the pneumatic hammer piston from the hole of up/down perforation.
Promptly, hydraulic breaker of the present invention has: with instrument be installed in the bottom main body, be configured in the main body and impact the pneumatic hammer piston, change action oil phase of above-mentioned instrument the control valve that flows for the pneumatic hammer piston, it is characterized in that, following mechanism is being set: be in when impacting stroke at the pneumatic hammer piston, action oil is directly supplied to the upper piston chamber from above-mentioned upper chambers by the valve inner of above-mentioned control valve on the position between above-mentioned control valve and the pneumatic hammer piston.
According to this formation, the upper piston chamber that is positioned at the upper portion pressurized face of pneumatic hammer piston in the upper chambers, control valve only the pneumatic hammer piston impact stroke the time directly communicate with each other into shape in upright arrangement, since high-pressure trend action oil by directly acting on the upper portion pressurized face of pneumatic hammer piston in the control valve, so the path from upper chambers to top piston chamber becomes the shortest, in addition, because passage shape is simple, so the steadily mobile and pressure loss of action oil is few, can make a large amount of action oil flow in the short time.Therefore, can obtain crushing force, and have following more excellent effect greater than the pneumatics disintegrating machine of equal quality: so the simple fault in simple structure and loop is few, can be with small-sized hydraulic power source driving etc.
The mechanism that directly supplies with above-mentioned action oil by the valve inner of above-mentioned control valve is made of the partition member that makes head between upper piston chamber and control valve.Above-mentioned head has inner room and dish portion, this inner room has the opening that embeds the control valve valve body slidably on roof, this dish portion has the bearing-surface of valve body lower end, and above-mentioned dish portion has the vertical path that connects inner room and upper piston chamber in the outside more outer than bearing-surface.
According to this formation, in the prior art, because only performance is played a role as the passage components that the oily valve body from control valve of high pressure action is directly imported above-mentioned piston chamber with respect to the parts of the valve seat function of the valve body of control valve, so can obtain following more excellent effect: by simple structure, impacting in the stroke of pneumatic hammer piston, can make action oil act on the pneumatic hammer piston by the hollow bulb of above-mentioned control valve.
The a plurality of paths that connect inner room and upper piston chamber are preferably the equally spaced hole of the upper portion pressurized face that faces the pneumatic hammer piston.
Constitute according to this, the pressure of high pressure action oil efficiently and is equably acted on the upper portion pressurized face of pneumatic hammer piston.
Preferably, the valve body of control valve is made of cylindrical shell, and this cylindrical shell has through hole and has when rising to upper limit position the length that does not also deviate from from the head opening of partition member the lower end in central authorities.
Thus, impacting in the stroke of above-mentioned pneumatic hammer piston, action oil from upper chambers can not drain to upper piston chamber stream in addition, but can be by only it being imported in the upper piston chamber reliably in the control valve, in addition, impacting in the stroke stroke in addition of pneumatic hammer piston, can cut off the direct connection of upper piston chamber and upper chambers reliably.
Following detailed description will make other features and advantages of the present invention clear, as long as possess essential characteristic of the present invention, need not to be defined in the formation shown in the embodiment, certainly carry out various changes and modification.
Description of drawings
Fig. 1 is the vertical profile side view of an embodiment of expression hydraulic breaker of the present invention.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3-A is the cutaway view along the X-X line of Fig. 2.
Fig. 3-B is the part cutting side view of partition member monomer.
Fig. 4 is the diameter of the control valve among expression the present invention and the key diagram of compression area.
Fig. 5 is the cutaway view that has begun the state of upstroke.
Fig. 6-A be the expression upstroke latter stage state cutaway view.
Fig. 6-B is the partial enlarged drawing of Fig. 6-A.
Fig. 7-A is the cutaway view that has begun the state of decline (impacting) stroke.
Fig. 7-B is the partial enlarged drawing of Fig. 7-A.
Fig. 8-A is the cutaway view of the state when impacting.
Fig. 8-B is the partial enlarged drawing of Fig. 8-A.
The specific embodiment
Below, with reference to the description of drawings embodiments of the invention.
Fig. 1～Fig. 4 represents an embodiment according to hydraulic breaker of the present invention, and Fig. 5～Fig. 8 represents action.
In Fig. 1,1 is main body, has accumulator 1a, valve body 1b, pressure cylinder 1c and front end 1d from the top to the below, their combinations respectively by not shown bolt class part.The handle 9 of operation usefulness is installed on valve body 1b in addition.
In this through hole 100, be embedded with pneumatic hammer piston 4 sliding freely.Pneumatic hammer piston 4 has and runs through through hole 100 and extend to the excellent 4a of portion in the front end 1d, the diameter piston portion 4b greater than this rod portion, is formed with the bottom compression face 40 of ring-type at the intersection of excellent 4a of portion and piston portion 4b.
Piston portion 4b is formed with the bag hole 41 apart from the upper end desired depth, and therefore, piston portion 4b is formed with the upper portion pressurized face 42 of ring-type on end face.Be provided with the annular groove 43 of broad on the periphery below more leaning on than upper portion pressurized face 42.
Above-mentioned through hole 100 arrives the upper end of pressure cylinder 1c always, is provided with hole enlargement stage portion 102 at this position, as the expansion of the partition member 2 of feature of the present invention a 2a be partially submerged into this stage portion with the bottom.Other of above-mentioned 2a are partially submerged into and are fixed in from the expanded hole 103 that the lower center portion of valve body 1b is passed.
Shown in Fig. 3-B, a 2a of above-mentioned partition member 2 is block on the whole, has the opening 20 of the valve body tube portion of slide-and-guide aftermentioned control valve on the middle body of roof, has the inner room 21 that ratio open 20 has enlarged in the lower inner of roof.Be formed with the dish portion 22 of the recessed bearing-surface 220 that possesses the lower surface that is used to support control valve at the downside of this inner room 21, be equipped with vertical path 23 in this dish portion 22, this vertical path 23 is made of a plurality of through holes that are used to connect upper piston chamber 16 and inner room 21.Vertical path 23 is configured to the upper portion pressurized face 42 in the form of a ring that axis faces pneumatic hammer piston 4.In the accompanying drawings, though vertical path 23 equally spaced disposes, be not limited to this.Passage shape can also be arbitrary shapes such as circle, slotted hole shape.
Lower area at the through hole 100 of aforementioned body 1, on the bottom compression face 40 that makes the pneumatic hammer piston 4 of hydraulic action in the decline state, setting is the lower piston chamber 15 of annular groove shape, and then, on through hole 100, be formed with the intermediate piston chamber 17 that constitutes by annular groove at the horizontal level that more leans on than this lower piston chamber 15.This intermediate piston chamber 17 is positioned at the position that is communicated with above-mentioned annular groove 43 in the latter stage of the decline stroke of pneumatic hammer piston 4.
And then, on the through hole 100 that suitably leans on than above-mentioned intermediate piston chamber 17, form the low-pressure chamber 18 that constitutes by annular groove.Low-pressure chamber 18 is interconnected with intermediate piston chamber 17 via the annular groove 43 of pneumatic hammer piston 4 when the decline state of pneumatic hammer piston 4.
Valve body 1b is provided with upper chambers 12 in the upper end, and is provided with the inlet 10 and the outlet 11 of action oil on a sidepiece.
On above-mentioned upper chambers 12, on the position that is different from the connecting portion that imports path 101, be connected with the upper end of the 1st path 14.The 1st path 14 runs through valve body 1b and extends to pressure cylinder 1c, and the bottom is communicated with above-mentioned lower piston chamber 15.The 1st path 14 imports action oil from upper chambers 12 to bottom piston chamber 15 in the upward stroke of pneumatic hammer piston 4, in the decline operation of pneumatic hammer piston 4, import action oil from lower piston chamber 15 to upper chambers 12.
In the zone of above-mentioned inlet 10 and outlet 11, be provided with operation valve 8, this operation valve 8 is operated by the control lever 7 that end pivot is supported on the outer surface of valve body 1b.
This operation valve 8 has: the valve chamber 8a that are provided with across with inlet 10 and outlet 11, can dispose valve body 8b thereon slidably, valve chamber 8a has a hole, and this hole is by intersecting with inlet 10 and return path 81 that the lower end relative diameter is less is communicated in and exports 11.
Valve body 8b is embedded in a hole sliding freely, and has endless groove 80 on middle periphery.In addition, have the rod 82 that runs through valve chamber 8a extension on top, by pushed this rod 82 by control lever 7, whole valve body moves in the tube hole, and the bottom enters the interface wall of inlet 10 and outlet 11.
Accumulator 1a opens in the space that is formed by shell and chamber 100h and is provided with barrier film 100i, marks gas compartment 100j and the 100k of pressure accumulating chamber by this barrier film 100i.In addition, 100k of pressure accumulating chamber and upper chambers 12 utilize path 100m to be communicated with.
Be equipped with in the above-mentioned valve body 1b and the control valve 5 of above-mentioned partition member 2 on same axle.Control valve 5 is the mechanism of flowing of special change action oil phase for pneumatic hammer piston 4 in the prior art.In the present invention, not only as this kind mechanism, but also being also used as path mechanism, this path mechanism makes the action oil of pressure accumulation in accumulator 1a moving with partition member 2 associations, and makes it directly to supply to the upper portion pressurized face existing upper piston chambers 16 42 of pneumatic hammer piston 4 from upper chambers 12.
Above-mentioned control valve 5 is made of valve opening 5a and valve body 5b, and this valve opening 5a is provided with to top from a 2a of partition member 2, and this valve body 5b is to be falling-threshold and to be embedded in valve opening 5a sliding freely with docking of the above-mentioned dish portion 22 of partition member 2.
Above-mentioned valve body 5b integral body is tubular, as shown in Figure 2, has straight through hole (central compartment) 53 from top to bottom, on periphery, has the 1st portion 50, annular groove spine 51 and the 2nd portion 52 from the top down.
Now, as shown in Figure 4, be respectively D1, D2, D3 at the external diameter of the external diameter that makes the 1st portion 50, annular groove spine 51, the external diameter of the 2nd portion 52, make the sectional area of the sectional area of the 1st portion 50, the 2nd portion 52, the upper surface area of annular groove spine 51, the lower surface area of annular groove spine 51 be respectively under the situation of A2, A1, A4, A3, these values meet the following conditions.
D2＞D1＞D3
A1+A3＝A2+A4
A3-A4＝A2-A1
Above-mentioned valve body 5b, as shown in Figure 7, when being in propradation (end face of the 1st portion 50 butts up against the state of the end face 54 of valve opening 5a), the end portion of the 2nd portion 52 has not opening 20 from the 2a who is located at partition member 2 and deviates from length (highly) to the outside.This is integral for the empty chamber 21 by a 2a and path 23 and to the action oil that top piston chamber 16 full doses are supplied with upper chambers 12.Promptly, because if deviate from from the opening 20 on the 2a who is located at partition member 2 lower end of the 2nd portion 52, the infringement stability of sliding not only then, and the action oil by through hole 53 escapes to and flows into above-mentioned intermediate piston chamber 17 in the path 13, works as the power that pneumatic hammer piston 4 is risen.
On valve opening 5a, as shown in Figure 2, below the hole that is communicated in upper chambers 12, have the compartment of terrain successively and form the 1st valve chamber (top valve chamber) the 55, the 2nd valve chamber (intermediate valve chamber) 56 and the 3rd valve chamber (bottom valve chamber) 57 that constitutes by annular groove respectively.
The 1st valve chamber 55 is positioned at the zone of the 1st portion 50 of corresponding valve body 5b.When valve body 5b was positioned at the optional position, the 1st valve chamber 55 was cut off with being communicated with all of upper chambers 12.In addition, on the 1st valve chamber 55, be connected with the end of above-mentioned derived channel 111.
The 2nd valve chamber 56, when valve body 5b is positioned at the lower position, be located at the 1st portion 50 regions, when valve body 5b arrives upper limit position, be located at by the zone that be communicated with of annular groove spine 51 partitions with the 1st valve chamber 55, the 2nd valve chamber 56 is connected with above-mentioned upper piston chamber 16 by the communication paths 19 of passing valve body 1b and pressure cylinder 1c.
The 3rd valve chamber 57 be located at partition member 2 a 2a directly over the position, the 3rd valve chamber 57 when valve body 5b is positioned at the optional position, is all cut off itself and the 2nd valve chamber 56 by annular groove spine 51.In addition, the 3rd valve chamber 57 is connected with above-mentioned intermediate piston chamber 17 by the path 13 that passes valve body 1b and pressure cylinder 1c always.
Operation
Below, the action and the effect of the hydraulic breaker of the present invention shown in the embodiment are described.
When using according to hydraulic breaker of the present invention, with flexible pipe make inlet 10 and external hydraulic source arbitrarily for example the discharge portion of the hydraulic means of power shovel etc. be connected, will export 11 casees that lead hydraulic means by flexible pipe.
Fig. 1 is this state, opens owing to operate valve 8, so flow out to outlet 11 from return path 81 from the 10 action oil that flow into that enter the mouth.Therefore, the pressure in loop does not rise, and hydraulic breaker does not begin action.
At this moment, the valve body 5b of control valve 5 is positioned at the lower position, and the 2nd portion 52 enters inner room 21 by the opening of partition member 2, and the lower surface is seated on the bearing-surface 220 of dish portion 22.In addition, pneumatic hammer piston 4 also descends, and front end docks with instrument 6.
Operate if hold control lever 7, then as shown in Figure 5, come the valve body 8b of push operation valve 8, close return path 81 by large-diameter portion by control lever 7.Action oil is from 10 endless grooves 80 of valve body 8b of flowing through operation valve 8 that enter the mouth, and flows into upper chambers 12 by importing path 101, again the 1st path inflow lower piston chambers 15 14 by being communicated with this chamber.
Because the bottom compression face 40 of pneumatic hammer piston 4 is in the face of lower piston chamber 15, so pneumatic hammer piston 4 is upwards pushed away.At this moment, action oil in the upper piston chamber 16 at upper portion pressurized face 42 places of pneumatic hammer piston 4 is extruded by pneumatic hammer piston 4, flow to derived channel 111 from the connecting path 19 that is communicated in upper piston chamber 16 via the 2nd valve chamber 56 and the 1st valve chamber 55 that is communicated with this chamber, and flow out from exporting 11.
Like this, at the pneumatic hammer piston between 4 rising stages, from 10 parts that flow into the action oil of upper chambers 12 via importing path 101 that enter the mouth, as shown in Figure 6, flow into the 100k of pressure accumulating chamber by path 100m, owing to utilize its pressure upwards to push away barrier film 100i, the gas in the 100j of compression gas chamber is so accumulate action on pressure accumulating chamber 100k mesohigh ground oily.
Like this, the position that the bottom compression face 40 of the pneumatic hammer piston 4 that rises if rely on the supply action oil of lower piston chamber 15 arrives in the face of medial compartment 17, then as shown in Figure 6, high pressure action oil in the lower piston chamber 15 enters medial compartment 17, via the 3rd valve chamber 57 of path 13 inflow control valves 5 that are connected with this chamber.Be positioned at herein owing to be positioned at the bottom of land 51 of valve body 5b of lower position and the boundary part (stage portion) 512 of the 2nd portion 52, so the valve body 5b that is seated on the dish portion upper surface of partition member 2 of lower end begins rising by the pressure that puts on the 3rd valve chamber 57 on the above-mentioned stage portion 512 before this.
In detail, in Fig. 4, on the area A 2 of the area A 1 of the lower surface of valve body 5b and upper surface, acting on high pressure P h always.In addition, on the area A 4 of the upper surface of annular groove spine 51, acting on low pressure P1 always.Now, if on the 3rd valve chamber 57 elevated pressure Ph, then climbing power Fu acts on the valve body 5b of control valve.This climbing power Fu represents with following formula.
Fu＝Ph×A1+Ph×A3-Ph×A2-P1×A4
＝Ph×(A1-A2+A3)-P1×A4
At this, because A1-A2+A3=A4,
So Fu=A4 (Ph-P1)＞0
Therefore, the power Fu of depended on pressure difference generation rises the valve body 5b of control valve.
If the valve body 5b of control valve 5 rises, then the contacting of dish portion 22 of the lower end of the 2nd portion 52 by valve body 5b and partition member 2 and the inner room 21 that cuts off with the upper chambers 12 of the through hole 53 of valve body 5b and upstream thereof, as shown in Figure 7, follow the rising of valve body 5b and be communicated with through hole 53.Simultaneously, the connection between the 1st valve chamber 55 and the 2nd valve chamber 56 is closed by the annular groove spine 51 of valve body 5b.
Thus, the high pressure action oil of upper chambers 12 flows down from the larger-diameter through hole 53 of valve body 5b with taking advantage of a situation, and the inner room 21 of the partition member under directly entering 2, be distributed in then in each vertical path 23 of dish portion 22, directly over the upper portion pressurized face 42 of pneumatic hammer piston 4, flow in the upper piston chamber 16.
Because the area of upper piston chamber 16 is far longer than the area of lower piston chamber 15, so pneumatic hammer piston 4 quickens downwards sharp by the power of the generation of the high pressure on the area that acts on upper piston chamber 16.On the other hand, the action oil in the lower piston chamber 15 are forced out, then via the 1st path 14 adverse currents in upper chambers 12.
Like this, in the decline process of pneumatic hammer piston 4, the action oil of accumulating in the 100k of pressure accumulating chamber is emitted continuously by path 100m, is fed into the upper piston chamber 16 via path 23 from the through hole 53 of the valve body 5b of control valve 5, thereby replenishes the pressure of high tension loop.
In addition, though the valve body of existing control valve also is a cylindrical shell, that is for lightweight purely, the action oil that inside is full of only play valve body on push away effect.Relative therewith, in the present invention, the through hole of valve body is as the pipeline or the oil circuit performance function that are used for directly and in large quantities supplying with to top piston chamber 16 high pressure action oil.
Owing to make the valve body 5b self of action oil as described above, so the path from upper chambers 12 to top piston chamber 16 is a shortest path by control valve 5.In addition, because the simple shape of path, so the mobile of action oil becomes steadily, the pressure loss is little.Like this, by making a large amount of action oil flows at short notice, thereby can improve the speed of pneumatic hammer piston 4, its result can produce big impact force.
In addition, because path from upper chambers 12 to top piston chamber 16 is the valve body self of control valve 5, so the shape of the valve body 5b of control valve 5 also can be simplified, the number of valve chamber also can reduce, the via hole that passes main body also can become simple and quantity few.
Like this, if pneumatic hammer piston 4 descends, the head of front end impact tool 6, then instrument 6 transmits this hit energy and utilizes leading section with fragmentations such as concrete.This state as shown in Figure 8, if the front end impact tool 6 of pneumatic hammer piston 4, then the annular groove 43 of pneumatic hammer piston 4 arrives medial compartments 17, is opened between medial compartment 17 and the low-pressure chamber 18.
Because medial compartment 17 is connected with path 13, is connected with path 112 on low-pressure chamber 18, so the action oil in the 2nd valve chamber 57 flows out from exporting 111 via path 13, medial compartment 17, annular groove 43, low-pressure chamber 18 and path 112.
Therefore, the 2nd valve chamber 56 of control valve 5 becomes low pressure, and the valve body 5b of control valve 5 begins to descend.
Say that at length if act on low pressure P1 on the 3rd valve chamber 57, the power that then descends Fd acts on the valve body 5b of control valve.Decline power Fd represents with following formula.
Fd＝Ph×A2-P1×A3-Ph×A1+P1×A4
＝Ph(A2-A1)-P1×(A3-A4)
At this, because A3-A4=A2-A1,
So Fd=(Ph-P1) * (A2-A1)＞0
Like this, because the power Fd that pressure differential and area difference cause, the valve body 5b of control valve 5 descends.Thus, be back to the state of Fig. 5,4 beginnings of pneumatic hammer piston are risen once more.Below, by the impact tool 6 continuously of same action repeatedly.
Claims (3)
1. hydraulic breaker, has the main body (1) that instrument (6) is installed in the bottom, be configured in the main body and impact the pneumatic hammer piston (4) of above-mentioned instrument (6), the change action oil phase is for the control valve (5) that flows of pneumatic hammer piston (4), it is characterized in that, on the position between above-mentioned control valve (5) and the pneumatic hammer piston (4), partition member (2) is set, it is block head (2a) on the whole that above-mentioned partition member (2) has, the axial region (2b) that has guiding usefulness at the center, lower end of this head (2a), above-mentioned head (2a) is partially submerged into the hole enlargement stage portion (102) of pressure cylinder (1c) with the bottom, axial region (2b) is embedded in the bag hole (41) of pneumatic hammer piston (4), above-mentioned head (2a) has the opening (20) of the valve body tube portion of slide-and-guide control valve (5) at the middle body of roof, has the inner room (21) that has enlarged than above-mentioned opening (20) in the lower inner of roof, be formed with the dish portion (22) of the recessed bearing-surface (220) that possesses the lower surface that is used to support control valve (5) at the downside of this inner room (21), in this dish portion (22), be equipped with vertical path (23), vertical path (23) is by a plurality of through holes (23) formation that is used to connect upper piston chamber (16) and inner room (21), and vertical path (23) is configured to the upper portion pressurized face (42) in the form of a ring that axis faces pneumatic hammer piston (4).
2. hydraulic breaker as claimed in claim 1, it is characterized in that, the valve body (5b) of control valve (5) is made of cylindrical shell, and this cylindrical shell has through hole (53) and has when rising to upper limit position the length that does not also deviate from from head (2a) opening of partition member (2) lower end in central authorities.
3. hydraulic breaker as claimed in claim 2, it is characterized in that, valve body (5b) has the 1st portion (50) in periphery, annular groove spine (51) and the 2nd portion (52), at the external diameter that makes the 1st portion (50), the external diameter of annular groove spine (51), the external diameter of the 2nd portion (52) is respectively D1, D2, D3, make the sectional area of the 1st portion (50), the sectional area of the 2nd portion (52), the upper surface area of annular groove spine (51), the lower surface area of annular groove spine (51) is respectively A2, A1, A4, under the situation of A3, these values meet the following conditions
D2＞D1＞D3
A1+A3＝A2+A4
A3-A4＝A2-A1。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003149046A JP4064868B2 (en) | 2003-05-27 | 2003-05-27 | Hydraulic breaker |
| JP149046/2003 | 2003-05-27 | ||
| JP149046/03 | 2003-05-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1572370A CN1572370A (en) | 2005-02-02 |
| CN100349658C true CN100349658C (en) | 2007-11-21 |
Family
ID=34045260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410047654 Expired - Fee Related CN100349658C (en) | 2003-05-27 | 2004-05-27 | Hydraulic pressure crusher |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4064868B2 (en) |
| CN (1) | CN100349658C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI124922B (en) * | 2012-01-18 | 2015-03-31 | Yrjö Raunisto | The impactor, |
| CN103849896B (en) * | 2013-06-05 | 2016-08-10 | 洛阳宇航重工机械有限公司 | Hydraulic pressure reverse installs hammering device |
| KR101782535B1 (en) * | 2016-01-28 | 2017-10-24 | 대모 엔지니어링 주식회사 | Hydraulic breaker |
| KR102317232B1 (en) * | 2020-01-08 | 2021-10-22 | 주식회사 현대에버다임 | Hydraulic Breaker |
| CN114146751B (en) * | 2021-11-23 | 2023-04-21 | 山西中德鼎盛机械制造有限公司 | Small-size ore cracking equipment for mining |
-
2003
- 2003-05-27 JP JP2003149046A patent/JP4064868B2/en not_active Expired - Lifetime
-
2004
- 2004-05-27 CN CN 200410047654 patent/CN100349658C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004351529A (en) | 2004-12-16 |
| CN1572370A (en) | 2005-02-02 |
| JP4064868B2 (en) | 2008-03-19 |
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