CN109281604A - A kind of hydraulic crushing strike machine core and hydraulic breaking hammer - Google Patents
A kind of hydraulic crushing strike machine core and hydraulic breaking hammer Download PDFInfo
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- CN109281604A CN109281604A CN201811367214.7A CN201811367214A CN109281604A CN 109281604 A CN109281604 A CN 109281604A CN 201811367214 A CN201811367214 A CN 201811367214A CN 109281604 A CN109281604 A CN 109281604A
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- 230000004323 axial length Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 5
- 230000003134 recirculating effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 186
- 238000007789 sealing Methods 0.000 description 23
- 239000010720 hydraulic oil Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 5
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B1/00—Percussion drilling
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
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Abstract
The present invention relates to quartering hammer technical fields, more particularly to a kind of hydraulic crushing strike machine core, it include: cylinder sleeve, inside is equipped with piston, the oil piping system for driving piston axially reciprocating inside the cylinder sleeve is formed on the side wall of the cylinder sleeve, several oil pockets are formed between the piston and the inner wall of the cylinder sleeve, the oil piping system is connect with the oil pocket on-off, to change the direction of motion of the piston.A kind of hydraulic breaking hammer is additionally provided, including above-mentioned hydraulic crushing strike machine core.Structure is complicated in overcoming hydraulic crushing strike machine core in the prior art by the present invention, needs the problem of being made using a large amount of material, led to high production cost.
Description
Technical field
The present invention relates to quartering hammer technical fields, and in particular to a kind of hydraulic crushing strike machine core and hydraulic breaking hammer.
Background technique
Hydraulic breaking hammer belong to it is a kind of by hydraulic energy transfer be strike can impact equipment, with excavator, loading machine and
Other hydraulic stations combine, and are reached by means of the hydraulic energy of above equipment to realize that the piston reciprocating in quartering hammer hits pick rod
Target is crushed, many necks such as mining, municipal works, construction, road and rail construction are widely used in
Domain.
At present hydraulic hammer industry change in there are mainly two types of modes for the commutation setting in piston uplink and downlink fortune direction in cylinder body:
External commutation and built-in commutation.
External commutates (such as Fig. 1): its commutating structure is made of valve body, valve deck, spool.It is external to be fixed by bolts to middle cylinder
Side, due to being that a relatively independent device causes volume excessive；It is expert at during fortune, in order to realize and piston in middle cylinder body
Synchronous operation, causes stroke of its spool in valve body longer, pulling between spool and valve body or stuck easily occurs；Again because of valve
Core stroke is long, causes spool operation inertia under hydraulic oil effect big, forms huge impact force to valve deck, valve deck is caused to be easy
Cracking.
Built-in commutation (such as Fig. 2): its commutating structure forms a cylindrical reversing arrangement, peace by valve pocket, valve deck, spool
In side eccentric orfice in middle cylinder body.This mode requires the main aperture in the middle cylinder body of hydraulic hammer in addition to running for piston
The hole of one installation reversal valve of outer separately processing makes to form two large and small not equal eccentric orfices in middle cylinder body, this to processing and heat at
The grinding strip in respective hole carrys out very big difficulty after reason, makes that production technology is sufficiently complex, efficiency is relatively low；It is entire in order to control simultaneously
The volume of middle cylinder body, it is desirable that the wall thickness between middle cylinder body piston hole and commutation hole cannot be excessive, due in the large and small hole in two sides in wall
A plurality of hydraulic circuit annular groove and multiple through-holes are processed, so that its wall in operation between two holes is easily cracked, causes entire middle cylinder
Body is scrapped；Two holes belong to eccentric sky, inside be respectively set multiple steps, and spool and piston make respectively wherein it is upper and lower
At a high speed, high frequency motion, each step requires high concentricity respectively in and two holes upper and lower to two holes, in actual use due to
Two hole concentricitys do not reach requirement, so that piston and spool easily occur pulling, are stuck.
In addition to above two reversing mode, the third makes according to patent of invention " application number 201380035003.2 ", is
Commutative ring is mounted on the middle and upper part of piston in middle cylinder body, reversing arrangement structure is simple, but in order to ensure commutative ring slides above and below
Corresponding hydraulic circuit setting is sufficiently complex.In addition to one piston of processing cylinder " cylinder that uplink and downlink are transported in wherein hole
Set " outside, in addition installs one " ontology " additional outside " cylinder jacket " again, can just make to establish two independences between " cylinder jacket " and " ontology "
High-voltage oil cavity and low pressure oil pocket；And " cylinder jacket " and " ontology " must be both cylindrical body；" this is mounted on due to " cylinder jacket "
The inside of body " causes the volume of " ontology " relatively bigger than normal.In order to commutative ring normal operation and in addition installed additional outside in " cylinder jacket "
" ontology " is caused using material is excessive, technique is relative complex in production, and manufacturing cost is higher compared with above two mode.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcoming the knot of hydraulic crushing strike machine core in the prior art
Structure is complicated, needs the problem of being made using a large amount of material, led to high production cost, so that it is simple to provide a kind of structure, saves
Material and hydraulic crushing strike machine core and the hydraulic breaking hammer for reducing cost.
In order to solve the above-mentioned technical problems, the present invention provides hydraulic crushing strike machine cores, comprising:
Cylinder sleeve, inside are equipped with piston, are formed on the side wall of the cylinder sleeve for driving the piston inside the cylinder sleeve
The oil piping system of axially reciprocating is formed with several oil pockets, the oil circuit system between the piston and the inner wall of the cylinder sleeve
System is connect with the oil pocket on-off, to change the direction of motion of the piston.
Further, the top of the piston is equipped with for controlling the oil piping system and the upper piston area molding first
The commutative ring of oil pocket on-off, the commutative ring move back and forth under the action of the oil piping system along the outer wall of the piston, with
Open or close the connection of the oil piping system Yu molding first oil pocket of the upper piston area.
Further, the oil piping system include high-pressure oil passage, low pressure oil way and with the high-pressure oil passage and low pressure oil way
The feedback oil circuit of equal on-off connection.
Further, the commutative ring includes the low pressure oil area, high pressure oil area and high-low pressure transition zone successively to arrange along axial direction,
And the outer diameter of the high pressure oil area is greater than the outer diameter in the low pressure oil area, the outer diameter in the low pressure oil area turns greater than the high-low pressure
Area is changed, and the high-low pressure transition zone is arranged close to the effect end of the piston.
Further, the periphery of the high pressure oil area of the commutative ring is equipped with several first through hole, and the first through hole is described
The high-pressure oil passage and molding first oil pocket of the piston outer upper are connected to when piston is towards by the movement of impact object；It is described to change
Several second through-holes are equipped with to the periphery in the low pressure oil area of ring, second through-hole is transported far from described by impact object in the piston
The low pressure oil way and the upper piston area molding first oil pocket are connected to when dynamic.
Further, the lower part on the outside of the piston has also been separately formed the second oil pocket, second oil pocket and the height
Press oil communication.
Further, the position that the inner wall of the cylinder sleeve corresponds to the commutative ring forms a limiting slot, the limiting slot edge
The axial length of the cylinder sleeve is greater than the commutative ring along the axial length of the cylinder sleeve, and the limiting slot has described in limitation
The first stopper section and the second stopper section of commutative ring movement travel.
It further, further include adjusting the piston to be run in the cylinder sleeve to short stroke oil circuit mouth or long stroke oil circuit mouth
Locate the stroke control valve stopped.
Further, it is equipped on the outer wall close to the cylinder sleeve of second through-hole for adjusting the commutative ring on the cylinder sleeve
The flow control valve of the recirculating oil quantity of portion's oil return hole.
A kind of hydraulic breaking hammer, including hydraulic crushing strike machine core.
Technical solution of the present invention has the advantages that
1. hydraulic crushing provided by the invention strike machine core, is formed with several oil pockets, in cylinder sleeve on the inner wall of cylinder sleeve
Side wall on form oil piping system, the inside of cylinder sleeve be equipped with piston, by hydraulic oil inboard wall of cylinder liner movement, band piston
It moves reciprocatingly in cylinder sleeve, is connected by the on-off of oil piping system and oil pocket, control the direction of motion of the piston in cylinder sleeve, this
The hydraulic crushing of invention compared with the existing technology strike machine core, since oil piping system being directly arranged on the side wall of cylinder sleeve,
Structure is simple, saves rapidoprint while also greatly reducing processing cost.
2. hydraulic crushing provided by the invention strike machine core, commutative ring are successively arranged low pressure oil area, high pressure from top to bottom
Oily area and high-low pressure transition zone, the diameter of high pressure oil area are greater than the diameter in low pressure oil area, and the diameter in low pressure oil area is greater than high-low pressure
Transition zone, hydraulic crushing with strike machine core starting when, commutative ring using itself weight can with rapid decrease so that starting
Reaction speed is more sensitive.
3. hydraulic crushing provided by the invention strike machine core, the inner wall of the cylinder sleeve correspond to the position of the commutative ring at
Type has a limiting slot, and the limiting slot is greater than axial direction length of the commutative ring along the cylinder sleeve along the axial length of the cylinder sleeve
Degree, and the limiting slot has the first stopper section and the second stopper section for limiting the commutative ring movement travel.In cylinder sleeve
On wall, the position of corresponding commutative ring is equipped with limiting slot, and the top of limiting slot is equipped with the first stopper section, and bottom end is equipped with the second backstop
Portion avoids commutative ring persistent movement in cylinder sleeve, upsets the movement travel of piston to limit the scope of activities of commutative ring.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the cross-sectional view of prior art external commutation hydraulic crushing machine core；
Fig. 2 is the cross-sectional view of the built-in commutation hydraulic crushing machine core of the prior art；
Fig. 3 is a kind of cross-sectional view of hydraulic crushing machine core provided by the invention；
Fig. 4 is enlarged drawing at A in Fig. 3；
Fig. 5 is enlarged drawing at B in Fig. 3；
Fig. 6 is enlarged drawing at C in Fig. 3；
Fig. 7 is the structural schematic diagram of commutative ring in Fig. 3.
Description of symbols:
101- machine core；102- upper cylinder body；
Cylinder body in 103-；104- lower cylinder body；105- piston；1051- pistons work portion medial launder；
106- pick rod；107- bolt；108- sealing shroud；
Oil return hole in the middle part of cylinder body in 109-；Inferior part of the cylinder block oil return hole in 110-；111- feeds back oil circuit；
112- high-pressure oil passage；113- low pressure oil way；The lower part 114- high-pressure oil passage hole；115- accumulator；
116- inner sleeve；117- housing；118- grease nipple；119- limited block；
The outer hollow pin of 120-；Hollow pin in 121-；122- nitrogen charging mouth；123- check valve；124- sealing group；
The first oil pocket of 125-；The second oil pocket of 126-；202- sealing ring；203- sealing shroud oil sealing group；
204- the first stop platform portion；205- commutative ring top cross-sectional area；206- commutative ring；
207- first through hole；Cross-sectional area in the middle part of 208- commutative ring；
209- the second stop platform portion；Cylinder body commutative ring oil circuit hole in 210-；
211- middle cylinder object table rank；212- sealing shroud oilhole；213- commutative ring lower cross section product；
The second through-hole of 214-；301- short stroke oil circuit hole；302- long stroke oil circuit hole；
303- stroke control valve；The top 401- high-pressure oil passage hole；402- commutative ring oil return hole；
403- high pressure oil port；404- low pressure hydraulic fluid port；405- flow control valve；406- flow control valve thimble；
Cylinder body top oil return hole in 407-；501- low pressure oil area；The high pressure oil area 502-；
503- high-low pressure transition zone；
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
A kind of specific embodiment of the strike machine core of hydraulic crushing as shown in fig. 3 to 7, comprising:
Cylinder sleeve, inside are equipped with piston 105, are formed on the side wall of the cylinder sleeve for driving the piston 105 in the cylinder
The oil piping system for covering internal axially reciprocating, is formed with several oil pockets, institute between the piston 105 and the inner wall of the cylinder sleeve
It states oil piping system to connect with the oil pocket on-off, to change the direction of motion of the piston 105.
Above-mentioned hydraulic crushing strike machine core, machine core 101, including cylinder sleeve, cylinder sleeve include upper cylinder body 102 and middle cylinder body again
103 and lower cylinder body 104, further include the bolt 107 being arranged on cylinder sleeve, bolt 107 by upper cylinder body 102 and middle cylinder body 103,
And lower cylinder body 104 is integrally fixed part, several oil pockets is formed on the inner wall of middle cylinder body 103, in the side wall of middle cylinder body 103
It is equipped with oil piping system, piston 105 is equipped in the inside of middle cylinder body 103, by hydraulic oil in the movement of inboard wall of cylinder liner, drives and live
Plug 105 moves reciprocatingly in middle cylinder body 103, is connected by the on-off of oil piping system and oil pocket, controls piston 105 in middle cylinder body
The direction of motion in 103.The hydraulic crushing of the present invention compared with the existing technology strike machine core, has saved a large amount of material, by
In on the side wall that entire hydraulic oil pipe system is provided entirely in middle cylinder body 103, the sheet wrapped up outside middle cylinder body 103 is omitted
Body is greatly saved rapidoprint, it will be apparent that reduces processing cost, the present invention has only opened one for living in cylinder sleeve
The centre bore that plug 105 moves back and forth must process two bias skies to differ in size compared with the existing technology, keep difficulty of processing big
It is big to reduce, while hydraulic crushing strike machine core quality is improved again, since the present invention all sets all hydraulic pipe-line system
It sets in middle cylinder body 103, so that the length of entire hydraulic flow path shortens, corresponding hydraulic energy loss reduction greatly increases liquid
Crush the broken hitting power with strike machine core.
The top of the piston 105 is equipped with for controlling the oil piping system and 105 top of piston molding first
The commutative ring 206 of 125 on-off of oil pocket, the commutative ring 206 is under the action of the oil piping system along the outer wall of the piston 105
It moves back and forth, to open or close the connection of the oil piping system Yu molding first oil pocket 125 in 105 top of piston.Institute
State oil piping system include high-pressure oil passage 112, low pressure oil way 113 and with the high-pressure oil passage 112 and the equal on-off of low pressure oil way 113
The feedback oil circuit 111 of connection.In the inside of middle cylinder body 103, it is equipped with commutative ring 206 on the top of piston 105, while also forming
First oil pocket 125, high-pressure oil passage 112, low pressure oil way 113 and feedback oil circuit 111 are vertically set on the side wall of middle cylinder body 103
On, the high pressure oil port 403 connecting with high-pressure oil passage 112 is equipped on the outer wall of middle cylinder body 103, the lower section of high pressure oil port 403 is set
There is the low pressure hydraulic fluid port 404 connecting with low pressure oil way 113, commutative ring 206 is in high-pressure oil passage 112, low pressure oil way 113 and feedback oil
It controls piston 105 under the action of road 111 to move reciprocatingly along the axial direction of middle cylinder body 103, so that high-pressure oil passage 112, low pressure oil way
113 and feedback oil circuit 111 and the first oil pocket 125 be in connected state or off-state.
It is additionally provided with high-pressure oil passage hole 114 in the bottom of high-pressure oil passage 112, high-pressure oil passage hole 114 is connected with accumulator 115,
Accumulator 115 belongs to apolegamy part, selects different model according to the size of blow energy, the biggish model of blow energy needs to add
Accumulator 115 is filled, leather cup diaphragm built in accumulator 115 fills nitrogen on 115 top of accumulator, and the bottom of accumulator 115 is in
The lower part high-pressure oil passage hole 114 of cylinder body 103 connects, and can increase the oil mass supply that piston 105 is axially moved along middle cylinder body 103.
The commutative ring 206 includes low pressure oil area 501, high pressure oil area 502 and the high-low pressure conversion successively arranged along axial direction
Area 503, and the outer diameter of the high pressure oil area 502 is greater than the outer diameter in the low pressure oil area 501, the outer diameter in the low pressure oil area 501
Greater than the high-low pressure transition zone 503, and the high-low pressure transition zone 503 is arranged close to the effect end of the piston 105.Commutation
Ring 206 is successively arranged low pressure oil area 501, high pressure oil area 502 and high-low pressure transition zone 503 from top to bottom, high pressure oil area 502 it is straight
Diameter is greater than the diameter in low pressure oil area 501, and the diameter in low pressure oil area 501 is greater than high-low pressure transition zone 503, hits in hydraulic crushing
Machine core start when, in low pressure oil way 112 there are no hydraulic oil when, commutative ring 206 using itself weight can quickly under
Drop, so that the reaction speed of starting is more sensitive.
The top of commutative ring 206 is commutative ring top cross-sectional area 205, and the middle part of commutative ring 206 is horizontal in the middle part of commutative ring
Sectional area 208, the lower part of commutative ring 206 are commutative ring lower cross section product 213, the stress cross-sectional area of commutative ring lower part 213
Greater than stress cross-sectional area 208 in the middle part of commutative ring.
The periphery of the high pressure oil area 502 of the commutative ring 206 is equipped with several first through hole 207, and the first through hole 207 exists
The piston 105 is towards being connected to the high-pressure oil passage 112 and 105 outer upper of the piston molding the when being moved by impact object
One oil pocket 125；The periphery in the low pressure oil area 501 of the commutative ring 206 is equipped with several second through-holes 214, second through-hole 214
The low pressure oil way 113 is connected to when the piston 105 is far from the movement by impact object and 105 top of the piston is molding
First oil pocket 125.Also be separately formed the second oil pocket 126 in the lower part in 105 outside of the piston, second oil pocket 126 with
The high-pressure oil passage 112 is connected to.It is equipped with first through hole 207 at the middle part of commutative ring 206, top is equipped with the second through-hole 214, in work
Plug 105 moves downward, and when hitting by strike object, the hydraulic oil in middle cylinder body 103 enters high pressure oil by first through hole 207
In road 112 and the first oil pocket 125, while the second oil pocket 126 is also connected to high-pressure oil passage 112, when piston 105 moves upwards, far
When from by strike object, hydraulic oil enters low pressure oil way 113 by the second through-hole 214 in the first oil pocket 125 in middle cylinder body 103
In.
It is equipped on the outer wall close to the cylinder sleeve of second through-hole 214 for adjusting the commutative ring oil return on the cylinder sleeve
The flow control valve 405 of the recirculating oil quantity in hole 402.It is equipped with flow control valve 405 on the outer wall of middle cylinder body 103, passes through flow tune
The flow control valve thimble 406 on valve 405 is saved, adjusts and enters low pressure oil way 113 by the hydraulic oil at commutative ring 206.
Adjacent with high pressure oil port 403 to be equipped with top high-pressure oil passage hole 401, high-pressure oil passage 112 passes through top high-pressure oil passage hole
401 connect with through-hole 207 on commutative ring, so that the first oil pocket 125 is in high pressure conditions.
The position that the inner wall of the cylinder sleeve corresponds to the commutative ring 206 forms a limiting slot, and the limiting slot is described in
The axial length of cylinder sleeve is greater than the commutative ring 206 along the axial length of the cylinder sleeve, and the limiting slot has described in limitation
The first stopper section 204 and the second stopper section 209 of 206 movement travel of commutative ring.On the inner wall of middle cylinder body 103, corresponding commutation
The position of ring 206 is equipped with limiting slot, and the top of limiting slot is equipped with the first stopper section 204, and bottom end is equipped with the second stopper section 209,
The scope of activities of commutative ring 206 is limited, commutative ring 206 persistent movement in middle cylinder body 103 is avoided, upsets the fortune of piston 105
Dynamic stroke.
It is equipped with pistons work portion medial launder 1051 at the middle part of piston 105, is equipped in middle cylinder body at the middle part of middle cylinder body 103
Portion's oil return hole 109, pistons work portion medial launder 1051 are connected with oil return hole 109 in the middle part of middle cylinder body.
It further include adjusting the piston 105 to be run in the cylinder sleeve to short stroke oil circuit mouth 301 or long stroke oil circuit mouth
The stroke control valve 303 stopped at 302, when stroke control valve 303 is opened, at the operation to short stroke oil circuit mouth 301 of piston 105
Stop, when stroke control valve 303 is closed, stopping at the operation to long stroke oil circuit mouth 302 of piston 105.
In the inside of lower cylinder body 104, the lower part of piston 105 is equipped with pick rod 106, limits pick rod 106 under by limited block 119
The stroke distances that cylinder body 104 is axially moved, on the outer wall of lower cylinder body 104, there are two grease nipples 118 for installation, exist to pick rod 106
Play lubrication protection when axially moving along lower cylinder body 104, is arranged with inner sleeve 116 respectively in the bottom of pick rod 106 and middle part
And housing 117, it ensure that pick rod 106 does axial reciprocating operation in lower cylinder body 104, be equipped on the outer wall of lower cylinder body 104 solid
Determine the interior hollow pin 121 of inner sleeve 116 and the outer hollow pin 120 of fixed jacket 117.
Sealing shroud 108 is arranged on middle 103 inner wall of cylinder body, is set in the outside of piston 105, passes through sealing shroud oil sealing group
203 and the sealing ring 202 that is arranged in outside sealing shroud 108, make to form partition between middle cylinder body 103 and upper cylinder body 102, seal
Set 108 is equipped with the sealing shroud oilhole 212 being connected with commutative ring, the sealing shroud oilhole 212 and commutative ring with 206 adjacent of commutative ring
Oil return hole 402 is connected to；Middle cylinder object table rank 211 is equipped at high pressure oil port 403, when sealing shroud 108 is installed, under sealing shroud 108
End is placed on middle cylinder object table rank 211, and the upper end is compressed by the port that the bottom of upper cylinder body 102 is connect with middle cylinder body 103,
It is locked by bolt 107.It is equipped with sealing shroud oil sealing group 203 on the inner wall of sealing shroud 108, pacifies in middle 103 lower part of cylinder body
Equipped with sealing group 124, the top of piston 105 and the lower part of piston 105 are completed by sealing shroud oil sealing group 203 and sealing group 124
103 internal hydraulic pressure oil of cylinder body is totally-enclosed in entire.
It is equipped with nitrogen charging mouth 122 on the outer wall on 102 top of upper cylinder body, nitrogen charging mouth is passed through according to the size requirement of hitting power
122 fill appropriate nitrogen in upper cylinder body 102, so that regulating piston 105 impacts downwards the speed of pick rod 106.
It is equipped with check valve 123 on 104 top of lower cylinder body, with the constantly impact up and down of piston 105, the shape in lower cylinder body 104
At air pressure difference, air is constantly introduced from the outside of lower cylinder body 104 to the inside of lower cylinder body 104 by check valve 123, due to pick
Pricker 106 constantly pumps, so that the dust being had on 106 periphery wall of pick rod, constantly from pick rod 106 and lower cylinder body
Gap between 104 is discharged downwards, avoid dust enter in cylinder body 103, influence the running precision of entire oil piping system.
A kind of hydraulic breaking hammer, including hydraulic crushing strike machine core.
Hydraulic crushing with strike machine core the specific course of work: as shown in figure 3, high pressure oil by high pressure oil port 403 with
High-pressure oil passage 112 connects, and low pressure oil is connect by low pressure hydraulic fluid port 402 with low pressure oil way 113, is opened in hydraulic crushing with strike machine core
When dynamic, pick rod 106 is compressed downwards, pick rod 106 pushes piston 105 to move up along the moved axially upward of cylinder sleeve, pick rod 106,
The lower part and the second oil pocket 126 for making piston 105 are connected, and the second oil pocket 126 connects with high-pressure oil passage 112, uses in hydraulic crushing
When hitting machine core work, the second oil pocket 126 is in high pressure conditions always, and the lower part of piston 105 is in 126 high pressure oil of the second oil pocket
Under effect, so that piston 105 continues upper movement, when the lower part of piston 105 is shifted up to short stroke oil circuit mouth 301 or long stroke
When at oil circuit mouth 302, feedback oil circuit 111 passes through in short stroke oil circuit mouth 301 or long stroke oil circuit mouth 302 and the second oil pocket 126
High pressure oil connection, make to feed back oil circuit 111 and be in high pressure conditions, be in moment of high pressure feeding back oil circuit 111, high pressure oil passes through
Commutative ring working oil path hole 210 on middle cylinder body 103, acts at height transition zone 503, under the action of high pressure oil, commutation
206 moment of ring is slid onto upwards at the first stop portion 204 on limiting slot, is changed since commutative ring lower cross section product 213 is greater than
Cross-sectional area 208 in the middle part of to ring, therefore commutative ring 206 is rapidly moving upward, at this point, high-pressure oil passage 112 passes through top high pressure oil
The first through hole 207 of road hole 401 and commutative ring 206 is connected, and the first oil pocket 125 is made to be in high pressure conditions.
When the first oil pocket 125 is in high pressure conditions, the lower part of piston 105 and the top of piston 105 are all in high pressure shape
State, but due to the forced area on the top of piston 105 be greater than piston 105 lower part forced area so that piston 105 rapidly to
The lower motion of middle cylinder body 103, the bottom high speed impact pick rod 106 of piston 105 are completed to hit pick rod in the bottom of piston 105
After 106, continue to move down, continue to move down with piston 105, pistons work portion medial launder 1051 and low pressure oil way 113 connect
Oil return hole 109 is connected in the middle part of logical middle cylinder body, while pistons work portion medial launder 1051 is connected with feedback oil circuit 111, so that
Feedback 111 moment of oil circuit is in low-pressure state, and the effect of oil pressure loses at high-low pressure transition zone 503, so that 206 moment of commutative ring
It moves down, since commutative ring 206 moves down the second stop platform portion 209 on limiting slot, makes commutative ring oil return hole 402 and the first oil pocket
125 connect, and moment is in low-pressure state simultaneously for the top of piston 105 and the first oil pocket 125, and the lower part of piston 105 still in
High pressure conditions, so that piston 105 restarts to move to the top of middle cylinder body 103, due to the first oil pocket 125 on middle cylinder body 103
Between high pressure and low pressure constantly high speed alternately and repeatedly change so that piston 105 constantly done along the axial direction of middle cylinder body 103 it is past
Multiple movement, to realize continuous hit.
During piston 105 moves reciprocatingly along the axial direction of middle cylinder body 103, the lower part of piston 105 and middle cylinder body 103
The hydraulic oil at slot leakage between the top and sealing shroud 108 of inner wall and piston 105, passes through middle 103 lower return of cylinder body
Hole 110 and top oil return hole 407 are pooled to low pressure oil way 113, rear to return at low pressure hydraulic fluid port 404.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of hydraulic crushing strike machine core characterized by comprising
Cylinder sleeve, cylinder sleeve inside are equipped with piston (105), are formed on the side wall of the cylinder sleeve for driving the piston (105) in institute
The oil piping system for stating axially reciprocating inside cylinder sleeve, is formed with several between the piston (105) and the inner wall of the cylinder sleeve
Oil pocket, the oil piping system are connect with the oil pocket on-off, to change the direction of motion of the piston (105).
2. hydraulic crushing according to claim 1 strike machine core, which is characterized in that the top of the piston (105) is set
There is the commutative ring for controlling the oil piping system Yu molding first oil pocket (125) on-off in the piston (105) top
(206), the commutative ring (206) moves back and forth under the action of the oil piping system along the outer wall of the piston (105), to beat
The connection of the oil piping system Yu molding first oil pocket (125) in the piston (105) top is closed on or off.
3. hydraulic crushing according to claim 2 strike machine core, which is characterized in that the oil piping system includes high pressure oil
Road (112), low pressure oil way (113) and the feedback oil being connect with the high-pressure oil passage (112) and low pressure oil way (113) on-off
Road (111).
4. hydraulic crushing according to claim 3 strike machine core, which is characterized in that the commutative ring (206) includes edge
Axial low pressure oil area (501), high pressure oil area (502) and the high-low pressure transition zone (503) successively arranged, and the high pressure oil area
(502) outer diameter is greater than the outer diameter of the low pressure oil area (501), and the outer diameter of the low pressure oil area (501) is greater than the high-low pressure
Transition zone (503), and the high-low pressure transition zone (503) is arranged close to the effect end of the piston (105).
5. hydraulic crushing according to claim 4 strike machine core, which is characterized in that the high pressure of the commutative ring (206)
The periphery of oily area (502) is equipped with several first through hole (207), and the first through hole (207) is hit in the piston (105) direction
The high-pressure oil passage (112) and molding first oil pocket (125) of the piston (105) outer upper are connected to when playing object movement；Institute
The periphery for stating the low pressure oil area (501) of commutative ring (206) is equipped with several second through-holes (214), and second through-hole (214) is in institute
The low pressure oil way (113) is connected to when stating piston (105) far from the movement by impact object and the piston (105) top forms
The first oil pocket (125).
6. hydraulic crushing according to claim 5 strike machine core, which is characterized in that on the outside of the piston (105)
Lower part has also been separately formed the second oil pocket (126), and second oil pocket (126) is connected to the high-pressure oil passage (112).
7. according to claim 2-6 described in any item hydraulic crushings strike machine core, which is characterized in that the inner wall of the cylinder sleeve
The position of the corresponding commutative ring (206) forms a limiting slot, and the limiting slot is greater than institute along the axial length of the cylinder sleeve
Commutative ring (206) is stated along the axial length of the cylinder sleeve, and the limiting slot has limitation commutative ring (206) movement travel
The first stopper section (204) and the second stopper section (209).
8. hydraulic crushing according to claim 5 strike machine core, which is characterized in that further include adjusting the piston
(105) it is run in the cylinder sleeve to the stroke control valve of stopping at short stroke oil circuit mouth (301) or long stroke oil circuit mouth (302)
(303)。
9. hydraulic crushing according to claim 5 strike machine core, which is characterized in that close to second through-hole
(214) outer wall of cylinder sleeve is equipped with the flow tune for adjusting the recirculating oil quantity of the commutative ring oil return hole (402) on the cylinder sleeve
It saves valve (405).
10. a kind of hydraulic breaking hammer, which is characterized in that use and beat including the described in any item hydraulic crushings of the claim 1-9
Hit machine core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811367214.7A CN109281604B (en) | 2018-11-16 | 2018-11-16 | Striking machine core for hydraulic crushing and hydraulic crushing hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811367214.7A CN109281604B (en) | 2018-11-16 | 2018-11-16 | Striking machine core for hydraulic crushing and hydraulic crushing hammer |
Publications (2)
| Publication Number | Publication Date |
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| CN109281604A true CN109281604A (en) | 2019-01-29 |
| CN109281604B CN109281604B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811367214.7A Active CN109281604B (en) | 2018-11-16 | 2018-11-16 | Striking machine core for hydraulic crushing and hydraulic crushing hammer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219334A (en) * | 2019-04-02 | 2019-09-10 | 台州贝力特机械有限公司 | A kind of hydraulic breaking hammer |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109281604B (en) | 2024-05-24 |
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