CN106151160A - There is hydraulic jack and the excavator of pooling feature - Google Patents
There is hydraulic jack and the excavator of pooling feature Download PDFInfo
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- CN106151160A CN106151160A CN201510210063.4A CN201510210063A CN106151160A CN 106151160 A CN106151160 A CN 106151160A CN 201510210063 A CN201510210063 A CN 201510210063A CN 106151160 A CN106151160 A CN 106151160A
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- hydraulic jack
- buffer plunger
- pooling feature
- cylinder bottom
- piston
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Abstract
The present invention relates to a kind of hydraulic jack with pooling feature and excavator, wherein, the hydraulic jack with pooling feature includes cylinder body, piston rod and piston it is provided with in cylinder body, piston rod passes piston, and be first end near one end of cylinder bottom of cylinder body, the hydraulic jack with pooling feature also includes buffer plunger, centre bore it is provided with in first end, one end of buffer plunger is by the centrally disposed hole of stopping means, and can move back and forth in centre bore, the other end of buffer plunger is near cylinder bottom, and be positioned on same axis with the first groove of setting on cylinder bottom, the the first turnover oil duct arranged in first groove connection cylinder body, at least one throttling channel it is provided with on buffer plunger, the width of throttling channel direction from piston to cylinder bottom is gradually reduced, the axially extending bore arranged in throttling channel connection buffer plunger.The present invention can make oil cylinder rodless cavity in buffering course, and fluid compensator or trimmer pressure consecutive variations, buffer speed gradually falls after rise, it is to avoid velocity shock.
Description
Technical field
The present invention relates to engineering machinery field, particularly relate to a kind of hydraulic oil with pooling feature
Cylinder and excavator.
Background technology
In the course of the work, piston needs to realize constantly moving back and forth hydraulic jack in excavator,
When piston rod is retracted to extreme position, locking nut can produce great impact to cylinder bottom, causes and digs
Pick machine equipment runs unstable, and causes the structural failure of hydraulic jack, therefore, and need to be at liquid
In the rodless cavity of compressing cylinder, buffer unit is set, when being used for preventing hydraulic jack from running to stroke end,
The locking nut of hydraulic jack and cylinder bottom generation mechanical collision, produce impact and noise.At present, dig
The rodless cavity buffer structure of pick machine hydraulic jack mainly has a following two form:
1) oil circuit is set outside oil cylinder and device buffers；As arranged accumulator outside oil cylinder
And hydraulic circuit, controlled the break-make of oil cylinder and accumulator by the break-make controlling electromagnetic valve, work as oil
When cylinder connects with accumulator, hydraulic jack has cushioning effect.Above-mentioned accumulator is set outside oil cylinder
Carry out, with hydraulic circuit, the mode that buffers, have certain retardance in time so that buffering is rung
Should slow, buffering effect is inconspicuous.
2) ad hoc structure is set inside oil cylinder, realizes buffering by meter out.As at buffering knot
In structure, goed deep into the oil duct on cylinder bottom is closed working connection by floating buffer plunger, make cushion chamber oil
Liquid, by the buffer regulating valve oil return at the bottom of oil cylinder, reaches buffering effect, and this kind of matching requirements floats
Buffer plunger has higher machining accuracy, and requires high with the axiality of cylinder bottom oil duct, floats slow
Jumper bar cannot dismounting and change so that shock-absorbing capacity is not easy to adjust, piston rod buffer structure office simultaneously
Portion's inefficacy can cause cylinder piston rod to be changed, and improves the maintenance cost of oil cylinder.And for example in plunger type
In cylinder cushion device, carry out throttling buffering, this kind by the uniform damping hole on buffering spool
Buffer unit is due to the effect of interrupted damping hole so that compensator or trimmer pressure exists pressure oscillation, buffering pressure
Power seriality is poor.
Summary of the invention
The purpose of the present invention is to propose to a kind of hydraulic jack with pooling feature and excavator, its
Can make oil cylinder rodless cavity in buffering course, rodless cavity fluid compensator or trimmer pressure consecutive variations, buffering
Speed gradually falls after rise, it is to avoid velocity shock.
For achieving the above object, the invention provides a kind of hydraulic jack with pooling feature,
It includes cylinder body, is provided with piston rod and piston in described cylinder body, and described piston rod is through described
One end of the cylinder bottom of piston and close described cylinder body is first end, has the liquid of pooling feature
Compressing cylinder also includes buffer plunger, is provided with centre bore, described bumper post in described first end
One end of plug is arranged in described centre bore by stopping means, and can be in described centre bore
Moving back and forth, the other end of described buffer plunger is near described cylinder bottom, and sets on described cylinder bottom
On the same axis, described first groove connects the arranged in described cylinder bottom to the first groove put
One turnover oil duct, described buffer plunger is provided with at least one throttling channel, described throttling channel
Width is gradually reduced from described piston to the direction of described cylinder bottom, and the connection of described throttling channel is described slow
The axially extending bore arranged in rushing plunger.
In above-described embodiment, buffer plunger is arranged in hollow-core construction, and buffer plunger arrange joint
Chute, the width of throttling channel direction from piston to cylinder bottom is gradually reduced, corresponding, throttleng surface
Long-pending direction from piston to cylinder bottom is continuously reduced, during cylinder buffer, and oil cylinder rodless cavity fluid
Compensator or trimmer pressure consecutive variations, buffer speed gradually falls after rise, it is to avoid pressure oscillation and velocity shock,
Improve operating efficiency and comfortableness.
, described buffer plunger is provided with described at least two preferably or in alternative embodiment one
Throttling channel, each described throttling channel is evenly arranged along the circumference of described buffer plunger, promotes further
The consecutive variations of oil cylinder rodless cavity fluid compensator or trimmer pressure.
One, preferably or in alternative embodiment, described throttling channel is triangular in shape, and near described cylinder
The one end at the end is the top of triangle, near the base that one end is triangle of described piston.
One, preferably or in alternative embodiment, described stopping means includes collar stop, described ring
Shape block is arranged in described centre bore, and is threaded connection described piston rod, described buffering
Plunger radially extend through described collar stop and being provided with near one end of described piston the
One step, by coordinating of described first step and described collar stop, limits described bumper post
Plug skids off described centre bore.
In above-described embodiment, buffer plunger is play the guiding role in buffering course by collar stop, really
Protect buffer plunger and the accurate centering of the first groove, buffer plunger is set to demountable structure, easily
In dismounting, change, it is to avoid buffer structure damages and causes the piston rod all to change, and reduces oil cylinder
Maintenance cost.
One preferably or in alternative embodiment, between described collar stop and described buffer plunger it is
Matched in clearance.
In above-described embodiment, the annular gap between collar stop and buffer plunger can at buffer stage
Coordinate with the throttling channel on buffer plunger, equalizing and buffering surge pressure and buffer speed.
One, preferably or in alternative embodiment, described stopping means also includes pressure ring, described annular
Block is provided with several spring eye on the end face of described cylinder bottom, is provided with in described spring eye
Holddown spring, described pressure ring is stepped, and the small size end of described pressure ring is arranged on described center
In hole, and it is threaded connection described piston rod, the tight described pressure of small size side pressure of described pressure ring
Tight spring, and then compress described collar stop, the large scale end of described pressure ring is positioned at described center
Outside hole, and fit tightly with the end of described piston rod.
In above-described embodiment, pressure ring is arranged to the interior spiral shell of external thread structure and the centre bore of piston rod
Stricture of vagina coordinates, it is simple to collar stop is compressed by pressure ring by holddown spring, and holddown spring can reduce pressure
Ring machining accuracy, plays locking effect simultaneously to pressure ring.
One, preferably or in alternative embodiment, the outer surface of the large scale end of described pressure ring is arranged to
Hexgonal structure, simple in construction, it is easy to assembling.
One preferably or in alternative embodiment, the bottom of described buffer plunger and described centre bore it
Between be provided with back-moving spring.
In above-described embodiment, back-moving spring is installed on the bottom of the centre bore of piston rod, to buffering
Plunger plays reset role, and cushion chamber compensator or trimmer pressure can be avoided to cause damage back-moving spring simultaneously,
Improve the service life of back-moving spring.
One, preferably or in alternative embodiment, described buffer plunger sets near one end of described cylinder bottom
Being equipped with to the second step radially extended, during buffering, described second step can be completely into institute
State in the first groove.
In above-described embodiment, during buffering, the second step of buffer plunger enters in the first groove, the
One groove play the guiding role jointly with collar stop so that buffer plunger does not occurs in buffering course
Lateral deviation, improves the reliability of buffer structure.
, described cylinder bottom is provided with around described first groove preferably or in alternative embodiment one
One ring-shaped groove, the second turnover oil duct that the connection of described ring-shaped groove is arranged in described cylinder bottom,
It is provided with the check valve with throttle orifice on described second turnover oil duct.
In above-described embodiment, cylinder bottom is provided with the check valve of band throttle orifice, prevents oil cylinder at piston rod
The excessive destruction that cylinder structure is caused of buffering end pressure in buffering course.
One, preferably or in alternative embodiment, described second turnover oil duct is by described check valve
Damping hole connection described first turnover oil duct.
In above-described embodiment, offer a ring-shaped groove at cylinder bottom, increase oil cylinder when reversely opening
Fluid opens the active area after check valve at rodless cavity, makes oil cylinder realize the most rapidly and opens, carries
High work efficiency.
, the described first end of described piston rod is provided with preferably or in alternative embodiment one
Locking nut, locks described piston with described piston rod by arranging described locking nut.
For achieving the above object, present invention also offers a kind of excavator, it includes any of the above-described
The hydraulic jack with pooling feature in embodiment.
Based on technique scheme, the present invention the most at least has the advantages that
The buffer plunger that the present invention provides is uniform several throttling channels in hollow-core construction, and its outer peripheral face,
The width of throttling channel direction from piston to cylinder bottom is gradually reduced, and the orifice size of throttling channel is continuous
Reducing, therefore, in oil cylinder rodless cavity buffering course, the compensator or trimmer pressure of rodless cavity fluid becomes continuously
Change, it is to avoid pressure oscillation, make buffer speed in buffering course gradually fall after rise, it is to avoid velocity shock,
Enhance the stability of cylinder efficient.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the application
A part, the schematic description and description of the present invention is used for explaining the present invention, not structure
Become inappropriate limitation of the present invention.In the accompanying drawings:
The structural representation of the hydraulic jack with pooling feature that Fig. 1 provides for the present invention；
The close-up schematic view of the hydraulic jack with pooling feature that Fig. 2 provides for the present invention；
Fig. 3 has the check valve of band throttle orifice in the hydraulic jack of pooling feature for what the present invention provided
Enlarged diagram；
Buffer plunger structure in the hydraulic jack with pooling feature that Fig. 4 provides for the present invention is shown
It is intended to；
Block end face structure in the hydraulic jack with pooling feature that Fig. 5 provides for the present invention shows
It is intended to；
Pressure ring end face structure in the hydraulic jack with pooling feature that Fig. 6 provides for the present invention shows
It is intended to；
Pressure ring in the hydraulic jack with pooling feature that Fig. 7 provides for the present invention contacts with block
Position close-up schematic view.
Label in accompanying drawing:
1-cylinder body；2-piston rod；3-piston；4-back-moving spring；5-locking nut；6-buffer plunger；
7-collar stop；8-holding screw；9-holddown spring；10-pressure ring；11-throttling channel；12-the first ditch
Groove；13-ring-shaped groove；14-cylinder bottom；15-is with the check valve of throttle orifice；16-first passes in and out oil duct；
17-second passes in and out oil duct.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in embodiment is carried out clearly
Chu, it is fully described by.Obviously, described embodiment is only a part of embodiment of the present invention,
Rather than whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art are not having
Have and make the every other embodiment obtained under creative work premise, broadly fall into present invention protection
Scope.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ",
"front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward "
Deng instruction orientation or position relationship be based on orientation shown in the drawings or position relationship, be only for
It is easy to describe the present invention and simplifying describe rather than instruction or the device of hint indication or element
Must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that right
The restriction of scope.
As it is shown in figure 1, the hydraulic jack with pooling feature schematic provided for the present invention
Embodiment, in this illustrative examples, the hydraulic jack with pooling feature includes cylinder body 1,
Being provided with piston rod 2 and piston 3 in cylinder body 1, piston rod 2 is through piston 3 and near cylinder body
One end of the cylinder bottom 14 of 1 is first end, and the other end of piston rod 2 is the second end.Piston
Being provided with locking nut 5 on the first end of bar 2, piston 3 is arranged on the first end of piston rod 2
Portion, and by locking nut 5, piston 3 is locked with piston rod 2, further, locking screw
Holding screw 8 can also be arranged between female 5 and piston rod 2 to lock.The of piston rod 2
Being provided with centre bore in one end, centre bore is set to shoulder hole, and centre bore is near cylinder bottom 14
One end be machined with female thread.
As shown in Figure 1 and Figure 2, the hydraulic jack with pooling feature also includes buffer plunger 6,
Buffer plunger 6 is hollow structure, is i.e. provided with axially extending bore, buffer plunger in buffer plunger 6
One end of 6 is passed through in the centrally disposed hole of stopping means, and can move back and forth in centre bore,
The other end of buffer plunger 6 near cylinder bottom 14, and with the first groove 12 of arranging on cylinder bottom 14
Coaxially, the most on the same axis, the first turnover arranged in the first groove 12 connects cylinder bottom 14
Oil duct 16, buffer plunger 6 is provided with at least one throttling channel 11, the width of throttling channel 11
From piston 3, the direction to cylinder bottom 14 is gradually reduced, and throttling channel 11 sets in connecting buffer plunger 6
The axially extending bore put.
The buffer plunger 6 that the present invention provides is uniform several throttlings in hollow-core construction, and its outer peripheral face
Groove 11, the width of throttling channel 11 is gradually reduced from piston 3 to the direction of cylinder bottom 14, corresponding,
The orifice size of throttling channel 11 is continuously reduced to cylinder bottom 14 from piston 3, therefore, at cylinder buffer
During, the compensator or trimmer pressure consecutive variations of rodless cavity fluid, it is to avoid interrupted pore area in prior art
The pressure oscillation come, makes the buffer speed in buffering course gradually fall after rise, it is to avoid velocity shock, increases
The strong stability of cylinder efficient, improves efficiency and the comfortableness of excavator operation.
In the illustrative examples of the hydraulic jack with pooling feature of the invention described above offer,
Can be provided with at least two throttling channel 11 on buffer plunger 6, each throttling channel 11 can be along slow
The circumference rushing plunger 6 is evenly arranged, and further promotes the company of compensator or trimmer pressure during cylinder buffer
Continuous change.
As shown in Figure 4, one, preferably or in alternative embodiment, throttling channel 11 can be arranged in three
Angular structure, and near the top that one end is triangular structure of cylinder bottom 14, i.e. triangular structure
Top, near the base that one end is bottom, i.e. triangular structure of piston 3.
In the illustrative examples of the hydraulic jack with pooling feature of the invention described above offer,
For preventing buffer plunger 6 from departing from the centre bore of piston rod 2, stopping means can include collar stop
7 (as shown in Figure 6), in the centrally disposed hole of collar stop 7, collar stop 7 is provided with
The screw-internal thread fit arranged in external screw thread, with centre bore, collar stop 7 is threaded connection work
Stopper rod 2, buffer plunger 6 one end through collar stop 7 and near piston 3 is provided with radially
The first step extended, by coordinating of first step and collar stop 7, restriction buffer plunger
6 skid off centre bore.
Further, collar stop 7 is a strip, collar stop 7 and buffer plunger 6 it
Between be matched in clearance, form one section of longer annular space, during cylinder buffer, annular
Buffer plunger 6 can be play the guiding role by block 7, simultaneously collar stop 7 and buffer plunger 6 it
Between annular gap part play throttling buffering effect, this hole, annular gap buffering time and bumper post
Throttling channel 11 synergy on plug 6, improves buffering effect.
One preferably or in alternative embodiment, the end of buffer plunger 6 and the centre bore of piston rod 2
The center of back-moving spring 4, one end of back-moving spring 4 and piston rod 2 can be provided with between end
The bottom contact in hole, the end face of the first step of the other end of back-moving spring 4 and buffer plunger 6
Contact.The rigidity of back-moving spring 4 is less, plays reset role buffer plunger 6, it is ensured that at piston
In bar 2 return stroke, buffer plunger 6 is in the state of stretching out.
The buffer plunger 6 that the present invention provides is spacing in centre bore by collar stop 7, and passes through
Back-moving spring 4 and collar stop 7 carry out spacing, and buffer plunger 6 is demountable structure, makes oil cylinder
In use there is the hydraulic jack convenient disassembly of pooling feature, it is easily changed, it is to avoid be slow
Rush the piston rod 2 that structural failure causes all to change, reduce the maintenance cost of oil cylinder.
In the illustrative examples of the hydraulic jack with pooling feature of the invention described above offer,
Stopping means can also include pressure ring 10 (as shown in Figure 5), and collar stop 7 is near cylinder bottom 14
End face on be provided with several spring eye (as shown in Figure 6), four spring eyes are such as set,
Being respectively arranged with holddown spring 9 (as shown in Figure 7) in each spring eye, pressure ring 10 is stepped,
The small size end of pressure ring 10 is arranged in the centre bore of piston rod 2, the small size end of pressure ring 10
Outer surface be provided with external screw thread, with the centre bore of piston rod 2 in arrange screw-internal thread fit,
Pressure ring 10 is threaded connection piston rod 2, is screwed in the centre bore of piston rod 2 by pressure ring 10,
The tight holddown spring of small size side pressure 9 of pressure ring 10, and then compress collar stop 7, pressure ring 10
Large scale end be positioned at outside the centre bore of piston rod 2, and fit tightly with the end of piston rod 2.
In above-mentioned illustrative examples, by holddown spring 9, collar stop 7 is compressed, compress bullet
Spring 9 is tight between the end face of the first end of the large scale end face and piston rod 2 that ensure pressure ring 10
While laminating, pressure ring 10 is played locking effect.
As it is shown in figure 5, one preferably or in alternative embodiment, outside the large scale end of pressure ring 10
Surface can be arranged to hexgonal structure, it is simple to assembling.
In the illustrative examples of the hydraulic jack with pooling feature of the invention described above offer,
Buffer plunger 6 arranges the oriented second step radially extended near one end of cylinder bottom 14, second
Rank can be fully located in the first groove 12.In buffering course, the second step of buffer plunger 6
Jointly can guide with collar stop 7, it is ensured that buffer plunger 6 completely in the first groove 12
Lateral deviation is there is not in buffering course.
One, preferably or in alternative embodiment, the first groove 12 is circular groove.
In the illustrative examples of the hydraulic jack with pooling feature of the invention described above offer,
A ring-shaped groove 13, ring-shaped groove 13 can be provided with around the first groove 12 on cylinder bottom 14
The second turnover oil duct 17 that connection is arranged in cylinder bottom 14, the second turnover oil duct 17 is provided with
Check valve 15 (as shown in Figure 3) with throttle orifice.Further, the second turnover oil duct 17
Can be by damping hole connection the first turnover oil duct 16 on check valve 15.
One check valve 15 with throttle orifice is set in the cylinder bottom 14 of hydraulic jack, simultaneously at cylinder
A ring-shaped groove 13 is offered at the end 14 so that when hydraulic jack is reversely opened, fluid opens check valve
After 15, the active area at rodless cavity increases, and improves hydraulic jack and reversely opens speed.
The work of one specific embodiment of the hydraulic jack with pooling feature that the invention described above provides
Make process as follows.
At piston rod 2 in cylinder bottom 14 running, oil cylinder rodless cavity fluid and the first turnover oil duct
16 communicate, and now the check valve 15 with throttle orifice is in reset state due to spring effect.
When piston rod 2 will run to end of travel, first buffer plunger 6 contacts cylinder bottom 14, slow
The second step rushing plunger 6 enters in the first groove 12 on cylinder bottom 14, by collar stop 7
Common effect with cylinder bottom 14 first groove 12, it is ensured that in buffering course, buffer plunger 6 does not occurs
Lateral deviation affects pooling feature.
After buffer plunger 6 contacts cylinder bottom 14, oil cylinder rodless cavity fluid cannot directly pass through the first groove
12 enter the first turnover oil duct 16, but flow into first by the throttling channel 11 on buffer plunger 6
Turnover oil duct 16, rodless cavity pressure raises, and produces and piston rod 2 direction of motion opposite effect power,
Reducing the speed of service of piston rod 2, buffer fast response time, buffering effect is obvious.Along with piston
Bar 2 continues to move to cylinder bottom 14, and the orifice size of throttling channel 11 is gradually reduced, rodless cavity oil return
Flow is gradually reduced, and piston 3 buffer speed gradually falls after rise.
In buffering course, a small amount of fluid of rodless cavity is by longer between collar stop 7 and buffer plunger 6
Annular gap and check valve 15 in throttle orifice flow into first turnover oil duct 16, prevent buffered
Journey rodless cavity compensator or trimmer pressure is excessive.
By the uniform throttling channel 11 on above buffer plunger 6, collar stop 7 and buffer plunger 6
Between annular gap and throttle orifice synergy in check valve 15, balancing cylinder piston rod 2
Buffer speed and compensator or trimmer pressure.
In buffering course, the orifice size of throttling channel 11 is continuously reduced, oil cylinder rodless cavity fluid buffering pressure
Power consecutive variations, it is to avoid the pressure oscillation that interrupted pore area comes, improves the efficiency of excavator operation
With comfortableness.
During excavator oil cylinder reverse starting (i.e. piston rod 2 stretches out), oil-in part fluid flows into
In the centre bore of piston rod 2, act on bottom centre bore.Another part is opened check valve 15 and is flowed into
Rodless cavity, by the ring-shaped groove 13 arranged on cylinder bottom 14, acts on piston 3 and locking nut 5
End face, adds the active area of fluid.At two, fluid jointly acts on and accelerates oil cylinder and reversely open
Speed, improves excavator complete machine work efficiency.
The hydraulic jack with pooling feature that the present invention provides can be applied in excavator, lifting
Machine, dynamic compaction machinery etc. have in the engineering machinery of hydraulic jack.
In the illustrative examples of the excavator of present invention offer, excavator includes any of the above-described
The hydraulic jack with pooling feature in embodiment.
In sum, the hydraulic jack with pooling feature that the present invention provides the most at least has following
Beneficial effect: 1) the guarantee big chamber of digging machine oil cylinder compensator or trimmer pressure when buffering is continuous, no pressure ripple
Dynamic, it is to avoid the velocity shock of oil cylinder, improve the stationarity of digger operating device and the comfortable of operation
Property；2) ensure oil cylinder to realize the most rapidly to open, improve the efficiency of excavator operation；3) simultaneously
Ensureing that digging machine oil cylinder the biggest chamber buffer unit is readily disassembled, changes, shock-absorbing capacity is just
In adjustment, avoid piston rod buffer structure partial failure to cause cylinder piston rod to be changed, fall simultaneously
The debugging of low oil cylinder, maintenance cost.
In describing the invention, it is to be understood that use the word such as " first ", " second "
Limit parts, it is only for be easy to above-mentioned parts is distinguished, as the most separately
Statement, above-mentioned word does not has particular meaning, therefore it is not intended that to scope
Restriction.
Finally should be noted that: above example only in order to technical scheme to be described and
Non-to its restriction；Although the present invention being described in detail with reference to preferred embodiment, affiliated
The those of ordinary skill in field is it is understood that still can enter the detailed description of the invention of the present invention
Row is revised or portion of techniques feature is carried out equivalent；Without deviating from technical solution of the present invention
Spirit, it all should be contained in the middle of the technical scheme scope that the present invention is claimed.
Claims (12)
1. there is a hydraulic jack for pooling feature, including cylinder body (1), described cylinder body (1)
Inside be provided with piston rod (2) and piston (3), described piston rod (2) through described piston (3),
And be first end near one end of cylinder bottom (14) of described cylinder body (1), it is characterised in that:
Also include buffer plunger (6), in described first end, be provided with centre bore, described buffer plunger
(6) one end is arranged in described centre bore by stopping means, and can be at described centre bore
Interior reciprocating motion, the other end of described buffer plunger (6) near described cylinder bottom (14), and with
Upper the first groove (12) arranged of described cylinder bottom (14) is positioned on same axis, and described first
The first turnover oil duct (16) that groove (12) is arranged in connecting described cylinder bottom (14), described
At least one throttling channel (11) it is provided with on buffer plunger (6), described throttling channel (11)
Width is gradually reduced from described piston (3) to the direction of described cylinder bottom (14), described throttling channel
(11) axially extending bore arranged in connecting described buffer plunger (6).
There is the hydraulic jack of pooling feature the most as claimed in claim 1, it is characterised in that: institute
State and on buffer plunger (6), be provided with throttling channel described at least two (11), each described throttling channel
(11) circumference along described buffer plunger (6) is evenly arranged.
Having the hydraulic jack of pooling feature the most as claimed in claim 1 or 2, its feature exists
In: described throttling channel (11) is triangular in shape, and is three near one end of described cylinder bottom (14)
The top of dihedral, near the base that one end is triangle of described piston (3).
There is the hydraulic jack of pooling feature the most as claimed in claim 1, it is characterised in that:
Described stopping means include collar stop (7), described collar stop (7) be arranged on described in
In central hole, and being threaded connection described piston rod (2), described buffer plunger (6) passes
Described collar stop (7) and being provided with near one end of described piston (3) radially extends
First step, by coordinating of described first step and described collar stop (7), limits described
Buffer plunger (6) skids off described centre bore.
There is the hydraulic jack of pooling feature the most as claimed in claim 4, it is characterised in that:
It is matched in clearance between described collar stop (7) and described buffer plunger (6).
There is the hydraulic jack of pooling feature the most as claimed in claim 4, it is characterised in that:
Described stopping means also includes pressure ring (10), and described collar stop (7) is near described cylinder bottom (14)
End face on be provided with several spring eye, be provided with holddown spring (9), institute in described spring eye
It is stepped for stating pressure ring (10), and the small size end of described pressure ring (10) is arranged on described center
In hole, and it is threaded connection described piston rod (2), the small size end of described pressure ring (10)
Compress described holddown spring (9), and then compress described collar stop (7), described pressure ring (10)
Large scale end be positioned at outside described centre bore, and fit tightly with the end of described piston rod (2).
There is the hydraulic jack of pooling feature the most as claimed in claim 6, it is characterised in that:
The outer surface of the large scale end of described pressure ring (10) is arranged to hexgonal structure.
There is the hydraulic jack of pooling feature the most as claimed in claim 4, it is characterised in that:
Back-moving spring (4) it is provided with between described buffer plunger (6) and the bottom of described centre bore.
9. the hydraulic jack with pooling feature as described in claim 1 or 4, its feature exists
In: described buffer plunger (6) arranges oriented radially extending near one end of described cylinder bottom (14)
Second step, during buffering, described second step can be completely into described first groove (12)
In.
There is the hydraulic jack of pooling feature the most as claimed in claim 1, it is characterised in that:
On described cylinder bottom (14), described first groove (12) is provided with a ring-shaped groove (13),
The second turnover oil duct (17) that described ring-shaped groove (13) connection is arranged in described cylinder bottom (14),
It is provided with the check valve (15) with throttle orifice in described second turnover oil duct (17).
11. hydraulic jacks as claimed in claim 10 with pooling feature, it is characterised in that:
Described second turnover oil duct (17) is described by the damping hole connection on described check valve (15)
First turnover oil duct (16).
12. 1 kinds of excavators, it is characterised in that: include as described in any one of claim 1-11
The hydraulic jack with pooling feature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510210063.4A CN106151160B (en) | 2015-04-28 | 2015-04-28 | Hydraulic cylinder and excavator with pooling feature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510210063.4A CN106151160B (en) | 2015-04-28 | 2015-04-28 | Hydraulic cylinder and excavator with pooling feature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106151160A true CN106151160A (en) | 2016-11-23 |
| CN106151160B CN106151160B (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510210063.4A Active CN106151160B (en) | 2015-04-28 | 2015-04-28 | Hydraulic cylinder and excavator with pooling feature |
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| CN (1) | CN106151160B (en) |
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| CN108035925A (en) * | 2017-12-04 | 2018-05-15 | 陕西航天动力高科技股份有限公司 | A kind of high reliability buffering throttling oil cylinder connection valve block assembly |
| CN108652916A (en) * | 2018-05-15 | 2018-10-16 | 刘方圆 | A kind of knee joint ectoskeleton |
| CN110469558A (en) * | 2019-09-18 | 2019-11-19 | 三一汽车起重机械有限公司 | Centering oil cylinder and crane with bidirectional buffering |
| CN112228424A (en) * | 2020-10-20 | 2021-01-15 | 石芹芹 | Hydraulic oil cylinder |
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| CN116652084A (en) * | 2023-08-01 | 2023-08-29 | 山西恒达欣泰锻造股份有限公司 | Self-adaptive hydraulic piston adjusting system and leakage preventing method thereof |
| CN116652084B (en) * | 2023-08-01 | 2023-10-13 | 山西恒达欣泰锻造股份有限公司 | Self-adaptive hydraulic piston adjusting system and leakage preventing method thereof |
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