CN110388352A - Multistage hydraulic cylinder - Google Patents
Multistage hydraulic cylinder Download PDFInfo
- Publication number
- CN110388352A CN110388352A CN201910722650.XA CN201910722650A CN110388352A CN 110388352 A CN110388352 A CN 110388352A CN 201910722650 A CN201910722650 A CN 201910722650A CN 110388352 A CN110388352 A CN 110388352A
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- Prior art keywords
- sealing
- sealing column
- telescopic
- column
- plug
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/226—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having elastic elements, e.g. springs, rubber pads
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The present invention relates to machinery manufacturing technology fields, and disclose multistage hydraulic cylinder, including hydraulic stem and cylinder body, the hydraulic stem is movably installed in cylinder body, the first sealing column and the second sealing column are provided in cylinder body, second sealing column is socketed in the first sealing column, fixing sleeve is fixedly installed on the left of cylinder body, hydraulic stem passes through fixing sleeve and is socketed in the second sealing column, cylinder body bottom right side is fixedly installed with telescopic, spring is fixedly installed in telescopic, the identical first through hole of size there are two being opened up in the circle surrounded inside first sealing column by telescopic, first sealing column is internally provided with the first sealing-plug, the multistage hydraulic cylinder, using the first sealing column, second sealing column and hydraulic stem carry out multistage hydraulic, installation space be restricted and formed require very long occasion when, multistage hydraulic cylinder is capable of providing output more higher than hydraulic cylinder Power, better effect can be reached when construction by allowing, and improve the using effect of hydraulic cylinder.
Description
Technical field
The present invention relates to machinery manufacturing technology fields, specially multistage hydraulic cylinder.
Background technique
Hydraulic cylinder is the hydraulic actuator that hydraulic energy is changed into mechanical energy, does straight reciprocating motion.The letter of its structure
Single, reliable operation.Deceleration device when realizing reciprocating motion, can be removed from it, and do not have drive gap, movement is steady, because
This is used widely in the hydraulic system of various machinery, and hydraulic cylinder is usually made of cylinder barrel and piston rod, high pressure liquid pressure oil
It flows into cylinder barrel, because the pressure in cylinder barrel increases, so that piston rod be jacked up.Because hydraulic stem can be downward when hydraulic cylinder uses
The buffering dress that inboard wall of cylinder block is squeezed, cylinder body can be collided when squeezing to the end, but is arranged in existing cylinder body
Setting can only absorb hydraulic stem to the impact force fraction generated in cylinder body, and most power still can act in cylinder body
On wall, hydraulic cylinder body service life is made to shorten over time, cylinder body is easier to damage, and existing hydraulic cylinder is usually more
For single stage hydraulic cylinder, installation space be restricted and formed require very long occasion when, using effect is bad.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides multistage hydraulic cylinder, has the impact that can will be subject in cylinder body
The advantages that power fully absorbs solves the problems, such as above-mentioned.
(2) technical solution
To realize purpose described above, the invention provides the following technical scheme: multistage hydraulic cylinder, including hydraulic stem and cylinder
Body, the hydraulic stem are movably installed in cylinder body, and the first sealing column and the second sealing column, the second sealing column sleeve are provided in cylinder body
It is connected in the first sealing column, the first sealing column is the cylindrical body that left side is penetrated through, and the first sealing column is close to the one of cylinder body end
It holds size identical as inner chamber of cylinder block size, fixing sleeve is fixedly installed on the left of cylinder body, hydraulic stem passes through fixing sleeve and is socketed on second
In sealing column, cylinder body bottom right side is fixedly installed with telescopic, multiple springs is fixedly installed in telescopic, spring is in telescopic
It is inside placed equidistant with, and spring one end is fixedly connected with inboard wall of cylinder block, the spring other end is fixedly installed in telescopic left wall, telescopic
A circle is fixedly mounted along cylinder base, is also fixedly installed with inside the first sealing column inside and the second sealing column same as described above
Telescopic and spring, the size that simultaneous retractable is placed on the circle surrounded in the first sealing column and the second sealing column are sealed with first respectively
Column is corresponding with the second sealing column intracavity diameter size, opens up that there are two big in the circle surrounded inside the first sealing column by telescopic
Small identical first through hole, and first through hole front and back inside the first sealing column symmetrically opens up, and first through hole is close through first
Feng Zhu, the first sealing column are internally provided with the first sealing-plug, and the first sealing-plug is made of a cake with cylinder, and the first sealing
The body diameter of plug is less than one centimetre of first through hole diameter, and the cake diameter of the first sealing-plug is the two of first through hole diameter
Times, the first sealing-plug is socketed in first through hole, and the first sealing-plug, and two first sealings are socketed in two first through hole
Plug is respectively arranged on the left of the first sealing column and right side, the first sealing-plug cake are provided with resistance close to the side of the first sealing column
Spring, resistance spring is socketed on the first sealing-plug cylinder, and it is close with the first sealing column and the first sealing-plug cake respectively to hinder spring both ends
The side of first sealing column is fixedly mounted, in resistance spring setting there are two telescopic rod, telescopic rod both ends respectively with the first sealing column with
First sealing-plug cake is fixedly mounted close to the side of the first sealing column, and two telescopic rods are right as midpoint front and back using the first sealing-plug
Claim installation, position corresponding with the first sealing column offers the second through-hole in the second sealing column, and the second through-hole and second close
It seals the size between column and the ratio between the first sealing column and first through hole is identical, and the second sealing column and the second through-hole
On be provided between the first sealing column and first through hole identical second sealing-plug, resistance spring and telescopic rod, and the second sealing column
On device ratio it is corresponding with the device scale in the first sealing column.
Preferably, the telescopic side wall is soft retractable structure, and telescopic left wall is solid structure, and telescopic is length
Cube shape.
Preferably, spring there are three being fixedly mounted in the telescopic.
It is preferably, described that flexible to be placed on cylinder base midpoint there are diameter be cylinder interior diameter one third
Circle.
Preferably, the telescopic rod is the bar of multi-section retractable type.
(3) beneficial effect
Compared with prior art, the present invention provides multistage hydraulic cylinder, have it is following the utility model has the advantages that
1, the multistage hydraulic cylinder carries out multistage hydraulic using the first sealing column, the second sealing column and hydraulic stem, is installing
Space is restricted and is formed when requiring very long occasion, and multistage hydraulic cylinder can provide and Normal hydraulic cylinder phase in small space
With the power of power size, better effect can be reached when construction by allowing, and improve the using effect of hydraulic cylinder.
2, the multistage hydraulic cylinder is buffered come the impact force being subject to cylinder interior by setting telescopic, will be stretched
When contracting is placed on one circle of cylinder base setting so as to guarantee that the first sealing column is pressed onto bottommost in cylinder body, telescopic can be incited somebody to action
The telescopic that the pressure that the entire surface of first sealing column applies is decomposed, and is arranged in the first sealing column and the second sealing column
The transformation that ratio is then carried out according to the size of the first sealing column and the second sealing column, guarantees in the first sealing column and the second sealing column
Telescopic can decompose the pressure of corresponding size according to the corresponding size in its position, and simultaneous retractable set can with spring
When the first sealing column is moved to cylinder base, the impact force being subject to is absorbed by cylinder base by telescopic, and extended back
Contracting set is shunk after absorbing impact force to cylinder base, and the power that a part can be absorbed of telescopic by the side wall of telescopic into
Row decomposes dilution, some power then can be directly delivered to cylinder base from telescopic, avoid cylinder interior by hydraulic
The direct impact force of bar and the service life for reducing hydraulic cylinder, increase the service life of device.
3, the multistage hydraulic cylinder is provided with spring in telescopic and carrys out auxiliary telescopic set to be buffered, telescopic shape
Design when sealing column can be allowed to be pressed telescopic, telescopic can be reduced as far as possible, pressure when guaranteeing hydraulic
Power is sufficient, while when shrinking after telescopic absorbs impact force to cylinder base, and the power that telescopic is subject to can be carried out two by spring
Then secondary decomposition is transmitting remaining impact force to cylinder body, while spring decreases the first sealing column and touches with cylinder base
The speed hit reduces the impact force size that cylinder body is subject to, increases the service life of device.
4, the multistage hydraulic cylinder carries out the flowing of oil body using resistance spring and the first sealing-plug, the second sealing-plug, in cylinder body
After interior oil body is squeezed, oil body can be from being flowed in first through hole into the first sealing column, while pushing the first sealing
Fill in and moved to the direction of the second sealing column, and hinder impact force that spring can also give the second sealing column being subject to just now into
Row absorbs rebound, to oil body easier can be entered between the first sealing column and the second sealing column, while oil body also can
It is enough that resistance spring is protected, it prevents resistance spring from getting rusty to influence device using effect, increases the using effect of device.
5, the multistage hydraulic cylinder, cooperated using telescopic rod resistance spring and the first sealing-plug, the second sealing-plug come carry out using,
When oil body enters between the first sealing column and the second sealing column, telescopic rod can pass through the flexible by the first sealing-plug of itself
It is fixed on original position, and telescopic rod can also be increased by the flexible occupancy to reduce spatial area of itself when withdrawing
The using effect of device is added.
Detailed description of the invention
Fig. 1 is agent structure schematic diagram of the present invention；
Fig. 2 is main structure cross-sectional view of the present invention；
Fig. 3 is the first sealing column partial structural diagram of the invention；
Fig. 4 is structure enlargement diagram at A in Fig. 3 of the present invention；
Fig. 5 is first sealing column the structure left view of the invention；
Fig. 6 is main body partial structural diagram of the present invention；
Fig. 7 is structure enlargement diagram at B in Fig. 6 of the present invention；
Fig. 8 is main body partial structural diagram of the present invention.
In figure: 1 hydraulic stem, 2 cylinder bodies, 3 first sealing columns, 4 second sealing columns, 5 fixing sleeves, 6 telescopics, 7 springs, 8
One through-hole, 9 first sealing-plugs, 10 resistance springs, 11 telescopic rods, 12 second through-holes, 13 second sealing-plugs.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-8, multistage hydraulic cylinder, including hydraulic stem 1 and cylinder body 2 are please referred to, the hydraulic stem 1 is movably installed in cylinder body 2
It is interior, the first sealing column 3 and the second sealing column 4 are provided in cylinder body 2, the second sealing column 4 is socketed in the first sealing column 3, and first
Sealing column 3 is the cylindrical body that left side is penetrated through, and the first sealing column 3 is big close to one end size of 2 end of cylinder body and 2 inner cavity of cylinder body
Small identical, as shown in Fig. 2, being fixedly installed with fixing sleeve 5 on the left of cylinder body 2, hydraulic stem 1 passes through the concrete shape of the second sealing column 4
Fixing sleeve 5 is socketed in the second sealing column 4, and fixing sleeve 5 guarantees that hydraulic stem 1 will not misplace at work, prevents hydraulic stem 1 from working
When dislocation cause device to damage, 2 bottom right side of cylinder body is fixedly installed with telescopic 6, and 6 side wall of telescopic is soft scalable knot
Structure, 6 left wall of telescopic are solid structure, and telescopic 6 is rectangular-shape, and there are three spring 7, springs 7 for fixed installation in telescopic 6
It is placed equidistant in telescopic 6, and 7 one end of spring is fixedly connected with 2 inner wall of cylinder body, 7 other end of spring is fixedly installed in flexible
Cover 6 left walls, a circle is fixedly mounted along 2 bottom of cylinder body in telescopic 6, and telescopic 6 is in there are diameters 2 bottom midpoint position of cylinder body
The circle of 2 inside diameter one third of cylinder body, telescopic 6 can be moved in the first sealing column 3 to 2 bottom of cylinder body with spring 7
When, 2 bottom of cylinder body is absorbed the impact force being subject to by telescopic 6, to 2 bottom of cylinder body after the then absorption of telescopic 6 impact force
Shrink, to squeeze spring 7, and telescopic 6 power that a part absorbs decompose by the side wall of telescopic 6 it is dilute
It releases, some power can then be directly delivered to 2 bottom of cylinder body from telescopic 6, and power also can then be transmitted to spring 7,
After the impact force that absorbs telescopic 6 of spring 7 absorbs again simultaneously, spring 7 then will repeatedly absorb and the impact force after dilution to
2 bottom of cylinder body is transmitted, to allow cylinder body 2 that whole impact forces is performed in multiple times transmitting, is reduced cylinder body 2 and is being impacted
When the impact force that will receive, while spring 7 also can be reduced the speed of the first sealing column 3 with the collision of 2 bottom of cylinder body, the first sealing column
Also telescopic 6 same as described above and spring 7 are fixedly installed with inside 3 inside and the second sealing column 4, simultaneous retractable set 6 is in the
The size of the circle surrounded in one sealing column 3 and the second sealing column 4 respectively with 4 intracavity diameter of the first sealing column 3 and the second sealing column
Size is corresponding, is opened up in the circle surrounded inside the first sealing column 3 by telescopic 6 there are two the identical first through hole 8 of size, and
First through hole 8 is symmetrically opened up in 3 inside front and back of the first sealing column, and first through hole 8 runs through the first sealing column 3, the first sealing column 3
It is internally provided with the first sealing-plug 9, the first sealing-plug 9 is made of a cake with cylinder, and the body diameter of the first sealing-plug 9
Less than one centimetre of 8 diameter of first through hole, and the cake diameter of the first sealing-plug 9 is twice of 8 diameter of first through hole, the first sealing
Plug 9 is socketed in first through hole 8, and the first sealing-plug 9, and two the first sealing-plug 9 difference are socketed in two first through hole 8
It is set to 3 left side of the first sealing column and right side, 9 cake of the first sealing-plug is provided with resistance spring 10 close to the side of the first sealing column 3,
Resistance spring 10 be socketed on 9 cylinder of the first sealing-plug, and hinder 10 both ends of spring respectively with 9 cake of the first sealing column 3 and the first sealing-plug
It is fixedly mounted close to the side of the first sealing column 3, there are two telescopic rod 11, telescopic rod 11 is multi-section retractable for setting in resistance spring 10
The bar of type, and 11 both ends of telescopic rod are respectively with the first sealing column 3 and 9 cake of the first sealing-plug close to the side of the first sealing column 3
It is fixedly mounted, two telescopic rods 11 are that midpoint front and back is symmetrically installed with the first sealing-plug 9, and it is close to squeeze first in the second sealing column 4
When sealing column 3, the second sealing column 4 can first squeeze telescopic 6 in the first sealing column 3 and spring 7, and then the second sealing column 4 can be after
Continue and squeezed into the first sealing column 3, after having squeezed the first sealing-plug 9 and then squeezes the first sealing column 3, and first seals
Column 3 can be squeezed by after impact force to cylinder body 2, while the oil body in cylinder body 2 can be from first through hole 8 to the first sealing column
It is flowed in 3, while the first sealing-plug 9 being pushed to be moved to the direction of the second sealing column 4, and hindering spring 10 also can will be rigid
The impact force that the second sealing column 4 being just subject to is given carries out absorption rebound, so that it is close to allow oil body easier can enter first
It seals between column 3 and the second sealing column 4, while oil body can also protect resistance spring 10, prevent resistance spring 10 from getting rusty to influence
Device using effect, two telescopic rods 11 then prevent oil body close by first when entering between the first sealing column 3 and the second sealing column 4
Blocking 9 punching fall, cause device that can not continue to use, withdraw when, another first sealing-plug 9 of setting then will do it with it is above-mentioned
The opposite movement of first sealing-plug 9, so that oil body be allowed normally to flow back in cylinder body 2, in the second sealing column 4 with the first sealing column 3
Corresponding position offers the second through-hole 12, and size between the second through-hole 12 and the second sealing column 4 and first close
It is identical as the ratio between first through hole 8 to seal column 3, and is provided with and the first sealing column 3 on the second sealing column 4 and the second through-hole 12
Identical second sealing-plug 13, resistance spring 10 and telescopic rod 11 between first through hole 8, and the device ratio in the second sealing column 4
It is corresponding with the device scale in the first sealing column 4.
When in use,
The first step, telescopic 6 and spring 7 can be when the first sealing column 3 be moved to 2 bottom of cylinder body, by 2 bottom of cylinder body
Portion is absorbed the impact force being subject to by telescopic 6, to 2 bottom crimp of cylinder body after the then absorption of telescopic 6 impact force, to squeeze
Spring 7, and the power that a part absorbs can be carried out decomposition dilution by the side wall of telescopic 6 by telescopic 6, some power
2 bottom of cylinder body can be then directly delivered to from telescopic 6, power also can then be transmitted to spring 7, while spring 7 will stretch
After the impact force that set 6 absorbs absorbs again, impact force of the spring 7 then by multiple absorb and after diluting is passed to 2 bottom of cylinder body
It passs, to allow cylinder body 2 that whole impact forces is performed in multiple times transmitting, reduces the impact that cylinder body 2 will receive when being impacted
Power, while spring 7 also can be reduced the speed of the first sealing column 3 with the collision of 2 bottom of cylinder body.
Second step, when the second sealing column 4 squeezes the first sealing column 3, the second sealing column 4 can first squeeze the first sealing column 3
On telescopic 6 and spring 7, then the second sealing column 4 will continue to be squeezed into the first sealing column 3, squeeze first
After sealing-plug 9 and then the first sealing column 3 is squeezed, and the first sealing column 3 be squeezed by meeting after impact force to cylinder body 2, simultaneously
Oil body in cylinder body 2 can be from being flowed in first through hole 8 into the first sealing column 3, while pushing the first sealing-plug 9 to second
The direction of sealing column 4 is moved, and can also the impact force that the second sealing column 4 being subject to just now is given be inhaled by hindering spring 10
Rebound is received, to oil body easier can be entered between the first sealing column 3 and the second sealing column 4, while oil body also can
Resistance spring 10 is protected, prevents resistance spring 10 from getting rusty to influence device using effect, two telescopic rods 11 then prevent oil body into
The punching of first sealing-plug 9 is fallen when entering between the first sealing column 3 and the second sealing column 4, causes device that can not continue to use.
Third step, when withdrawing, another first sealing-plug 9 of setting then will do it opposite with above-mentioned first sealing-plug 9
Movement, so that oil body be allowed normally to flow back in cylinder body 2.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. multistage hydraulic cylinder, including hydraulic stem (1) and cylinder body (2), it is characterised in that: the hydraulic stem (1) is movably installed in cylinder
In body (2), it is provided with the first sealing column (3) and the second sealing column (4) in cylinder body (2), it is close that the second sealing column (4) is socketed on first
It in Feng Zhu (3), is fixedly installed with fixing sleeve (5) on the left of cylinder body (2), hydraulic stem (1) passes through fixing sleeve (5) and is socketed on the second sealing
In column (4), cylinder body (2) bottom right side is fixedly installed with telescopic (6), is fixedly mounted in telescopic (6) there are three spring (7),
Telescopic same as described above (6) and spring are also fixedly installed with inside first sealing column (3) inside and the second sealing column (4)
(7), the identical first through hole of size there are two being opened up in the circle while inside the first sealing column (3) surrounded by telescopic (6)
(8), the first sealing column (3) is internally provided with the first sealing-plug (9), and the first sealing-plug (9) is made of a cake with cylinder, the
One sealing-plug (9) is socketed in first through hole (8), and the first sealing-plug (9) cake is provided with close to the side of the first sealing column (3)
Resistance spring (10), there are two telescopic rod (11) for the interior setting of resistance spring (10), and two telescopic rods (11) are with the first sealing-plug (9) for before midpoint
After be symmetrically installed, position corresponding with the first sealing column (3) offers the second through-hole (12) in the second sealing column (4).
2. multistage hydraulic cylinder according to claim 1, it is characterised in that: first sealing column (3) is that left side is penetrated through
Cylindrical body, and the first sealing column (3) outer diameter is identical as cylinder body (2) internal diameter.
3. multistage hydraulic cylinder according to claim 1, it is characterised in that: telescopic (6) side wall is soft scalable
Structure, telescopic (6) left wall are solid structure, and telescopic (6) is rectangular-shape.
4. multistage hydraulic cylinder according to claim 1, it is characterised in that: the spring (7) equidistantly sets in telescopic (6)
It sets, and spring (7) one end is fixedly connected with cylinder body (2) inner wall, spring (7) other end is fixedly installed in telescopic (6) left wall, stretches
A circle is fixedly mounted along cylinder body (2) bottom in contracting set (6), and telescopic (6) is cylinder there are diameter in cylinder body (2) bottom midpoint position
The circle of body (2) inside diameter one third.
5. multistage hydraulic cylinder according to claim 4, it is characterised in that: the telescopic (6) in the first sealing column (3) and
The size of the circle surrounded in second sealing column (4) respectively with the first sealing column (3) and the second sealing column (4) intracavity diameter size phase
It is corresponding.
6. multistage hydraulic cylinder according to claim 1, it is characterised in that: the first through hole (8) is in the first sealing column (3)
Internal front and back symmetrically opens up, and first through hole (8) runs through the first sealing column (3), is socketed with first in two first through hole (8)
Sealing-plug (9), and two the first sealing-plugs (9) are respectively arranged on the left of the first sealing column (3) and right side.
7. multistage hydraulic cylinder according to claim 1, it is characterised in that: the body diameter of first sealing-plug (9) is small
In one centimetre of diameter of first through hole (8), and the cake diameter of the first sealing-plug (9) is twice of first through hole (8) diameter.
8. multistage hydraulic cylinder according to claim 1, it is characterised in that: the resistance spring (10) is socketed on the first sealing-plug
(9) it on cylinder, and hinders spring (10) and is fixedly connected with the first sealing column (3) with the first side.
9. multistage hydraulic cylinder according to claim 1, it is characterised in that: the telescopic rod (11) is multi-section retractable type
Bar, and telescopic rod (11) both ends are respectively with the first sealing column (3) and the first sealing-plug (9) cake close to the first sealing column (3)
Side is fixedly mounted.
10. multistage hydraulic cylinder according to claim 1, it is characterised in that: second through-hole (12) and the second sealing column
(4) ratio between the size between and the first sealing column (3) and first through hole (8) is identical, and the second sealing column (4) with
Identical second sealing-plug (13), resistance spring between the first sealing column (3) and first through hole (8) are provided on second through-hole (12)
(10) with telescopic rod (11), and the device ratio in the second sealing column (4) and the device scale phase on the first sealing column (4)
It is corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910722650.XA CN110388352B (en) | 2019-08-06 | 2019-08-06 | Multi-stage hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910722650.XA CN110388352B (en) | 2019-08-06 | 2019-08-06 | Multi-stage hydraulic cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN110388352A true CN110388352A (en) | 2019-10-29 |
| CN110388352B CN110388352B (en) | 2020-07-28 |
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| CN201910722650.XA Active CN110388352B (en) | 2019-08-06 | 2019-08-06 | Multi-stage hydraulic cylinder |
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| CN203926221U (en) * | 2014-07-01 | 2014-11-05 | 无锡亿利大机械有限公司 | Cushion cylinder |
| CN204664053U (en) * | 2015-04-09 | 2015-09-23 | 金湖县世杰客车门泵有限公司 | Automobile door pump cylinder |
| CN105179372A (en) * | 2015-09-25 | 2015-12-23 | 济南大学 | Hydraulic cylinder capable of being started under assistance of waste energy |
| CN107740795A (en) * | 2016-11-25 | 2018-02-27 | 重庆键英液压机电有限公司 | New multistage hydraulic cylinder |
| CN106481616A (en) * | 2016-12-06 | 2017-03-08 | 泸州长江液压密封件有限公司 | The hydraulic cylinder of self-locking is carried out using spring |
| CN208719059U (en) * | 2018-08-10 | 2019-04-09 | 长沙湘一机械有限公司 | The error concealment valve and its multistage hydraulic cylinder and garbage compression station of multistage hydraulic cylinder |
| CN208793366U (en) * | 2018-08-20 | 2019-04-26 | 天津市金凌云志机械有限公司 | A kind of multistep speed regulation hydraulic cylinder |
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