CN110273890A - Elongated oil cylinder and engineering machinery with it - Google Patents
Elongated oil cylinder and engineering machinery with it Download PDFInfo
- Publication number
- CN110273890A CN110273890A CN201910608173.4A CN201910608173A CN110273890A CN 110273890 A CN110273890 A CN 110273890A CN 201910608173 A CN201910608173 A CN 201910608173A CN 110273890 A CN110273890 A CN 110273890A
- Authority
- CN
- China
- Prior art keywords
- piston
- oil cylinder
- piston rod
- guide sleeve
- elongated oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
-
- 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
- F15B15/08—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
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- 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
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
-
- 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
- F15B15/1471—Guiding means other than in the end cap
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication
-
- 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
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Actuator (AREA)
Abstract
The present invention provides a kind of elongated oil cylinder and the engineering machinery with it, and elongated oil cylinder includes: cylinder body, and axially extending and open at one end installation cavity along its is defined in cylinder body；Piston rod, piston rod are movably located in installation cavity and one end along the axial direction of cylinder body and stretch out installation cavity；Piston component, piston component are located in installation cavity and are set in the other end of piston rod；Guide sleeve, guiding are set in one end of cylinder body and are arranged on the piston rod, and the inner wall of guide sleeve towards piston one end is equipped with annular mounting groove；Axle sleeve, axle sleeve are arranged on the piston rod and are mounted in mounting groove, and the inner wall of axle sleeve is equipped with helicla flute.Elongated oil cylinder according to an embodiment of the present invention, by limiting mounting groove in guide sleeve, axle sleeve is located in mounting groove, the elongated oil cylinder can not only guarantee the stability of piston rod guiding performance and lubrication, meet the needs of ultralong-stroke, and structure is simple, it is easy to process.
Description
Technical field
The present invention relates to technical field of engineering machinery more particularly to a kind of elongated oil cylinder and with its engineering machinery.
Background technique
Elongated oil cylinder is often used on crane, the ratio between usual stroke and piston rod bar diameter 60 or so, that is,
Say that stroke is 60 times or more of piston rod bar diameter or even longer.The design of this oil cylinder wants to fully consider so long row
Under journey, the even running of oil cylinder and sealing system it is reliable.This oil cylinder is typically characterized by that oil cylinder specification is smaller, and bar diameter is only
There is 50mm or so, but stroke overlength, about between 4-5 meters.The stroke of oil cylinder is longer, the easier eccentric wear of oil cylinder, bending, sealing
Part is also more easier to wear, and furthermore oil cylinder stroke is longer, and the various internal structures of oil cylinder need to redesign, and processing cost is high.
Summary of the invention
In view of this, the present invention provides a kind of elongated oil cylinder.
The present invention also provides a kind of engineering machinery with above-mentioned elongated oil cylinder.
The elongated oil cylinder of embodiment according to a first aspect of the present invention, comprising: cylinder body is defined along its axial direction in the cylinder body
The installation cavity of extension and open at one end；Piston rod, the piston rod are movably located at the installation along the axial direction of the cylinder body
The installation cavity is stretched out in intracavitary and one end；Piston component, the piston component are located in the installation cavity and are set in piston rod
The other end；Guide sleeve, it is described to be oriented to the one end for being set in the cylinder body and be set on the piston rod, the guide sleeve court
Annular mounting groove is equipped with to the inner wall of described piston one end；Axle sleeve, the axle sleeve are set on the piston rod and are mounted on
In the mounting groove, the inner wall of the axle sleeve is equipped with helicla flute.
Elongated oil cylinder according to an embodiment of the present invention, by limiting mounting groove in guide sleeve, axle sleeve is located at mounting groove
Interior, which can not only guarantee the stability of piston rod guiding performance and lubrication, meet the needs of ultralong-stroke, Er Qiejie
Structure is simple, easy to process.
Elongated oil cylinder according to an embodiment of the present invention can also have following additional technical feature.
According to this practical one embodiment, the piston component includes: locking nut, and the locking nut is set in institute
State the other end of piston rod；First piston, the first piston is set on the piston rod and the neighbouring locking nut is set
It sets；Second piston, the second piston is set on the piston rod and the neighbouring first piston is arranged.
According to this practical one embodiment, the inner wall of the second piston is equipped with annular static seal slot, the piston
Component further include: sealing ring, the sealing ring are located in the static seal slot.
According to this practical one embodiment, inner wall of the locking nut adjacent to described piston rod one end is equipped with cooperation
Slot, the piston component further include: junction of the edges of two sheets of paper screw, the junction of the edges of two sheets of paper screw are located in the mating groove.
According to this practical one embodiment, the elongated oil cylinder further include: connection frame, the connection frame are formed as annular
It part and is set on the guide sleeve；Pressing plate, the pressing plate are formed as annular slab, and the pressing plate is set in the one of the guide sleeve
End and at least part are only supported the guide sleeve and the connection frame respectively and are connect with the connection frame and the cylinder bolt.
According to this practical one embodiment, the axle sleeve and the guide sleeve are interference fitted.
According to this practical one embodiment, the axle sleeve is brass material part.
According to this practical one embodiment, the inner wall of the guide sleeve is additionally provided with annular oil storage tank, the oil storage tank
It is coaxially disposed adjacent to one end where the mounting groove and with the mounting groove.
According to this practical one embodiment, the guide sleeve is additionally provided with multiple placing grooves adjacent to the inner wall of the other end,
Gap, the elongated oil cylinder are equipped between the placing groove and the oil storage tank further include: multiple sealing elements, multiple sealing elements point
It is not located in multiple placing grooves.
The engineering machinery of embodiment includes elongated oil cylinder described in above-described embodiment according to a second aspect of the present invention.
Detailed description of the invention
Fig. 1 is the axial section according to the elongated oil cylinder of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram according to the elongated oil cylinder of the embodiment of the present invention.
Appended drawing reference:
Elongated oil cylinder 100；Cylinder body 10；Piston rod 20；Piston component 30；Locking nut 31；First piston 32；Second piston
33；Junction of the edges of two sheets of paper screw 34；Static seal slot 331；Guide sleeve 40；Axle sleeve 50；Connection frame 60；Pressing plate 70.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.In addition, limit
There is the feature of " first ", " second " to can explicitly or implicitly include one or more of the features surely.Of the invention
In description, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Elongated oil cylinder 100 according to an embodiment of the present invention is specifically described in conjunction with attached drawing first below.
As depicted in figs. 1 and 2, elongated oil cylinder 100 according to an embodiment of the present invention includes cylinder body 10, piston rod 20, piston
Component 30, guide sleeve 40 and axle sleeve 50.
Specifically, defining axially extending and open at one end installation cavity along its in cylinder body 10, piston rod 20 is along cylinder body
10 axial direction is movably located in installation cavity and installation cavity is stretched out in one end, and piston component 30 is located in installation cavity and is set in work
The other end of stopper rod 20, guide sleeve 40 are located at one end of cylinder body 10 and are set on piston rod 20, and guide sleeve 40 is towards piston one
The inner wall at end is equipped with annular mounting groove, and axle sleeve 50 is set on piston rod 20 and is mounted in mounting groove, the inner wall of axle sleeve 50
Face is equipped with helicla flute.
In other words, elongated oil cylinder 100 is mainly by cylinder body 10, piston rod 20, piston component 30, guide sleeve 40 and 50 groups of axle sleeve
At in the prior art, guide sleeve structure is generally guide ring or sliding shaft sleeve, but oil cylinder elongated for this kind 100, above-mentioned
Mounting structure has very big risk, is first that the abrasion of sliding shaft sleeve can be very big, is second that the lubricating ability of sliding shaft sleeve is also difficult
To meet ultralong-stroke, as a result, by the way that annular mounting groove is arranged in 40 inner wall of guide sleeve, axle sleeve 50 is located in mounting groove, axis
The length of set 50 can be set as needed and be not limited to existing sliding shaft sleeve scale lengths, it is ensured that adequately be oriented to energy
Power.The existing sliding shaft sleeve 50 usually only thickness of 2.5mm, and axle sleeve 50 of the invention with a thickness of 5mm to guarantee the steady of structure
It is qualitative.In addition, limiting helicla flute in axle sleeve 50 is oil-way, axle sleeve 50 is by tolerance fit in 40 front end of guide sleeve, axis
The length and width equidimension of set 50 can be determined according to service condition, fully ensure that two functions of guiding performance and lubrication.
Elongated oil cylinder 100 according to an embodiment of the present invention as a result, by limiting mounting groove, axle sleeve in guide sleeve 40
50 are located in mounting groove, which can not only guarantee the stability of piston rod 20 guiding performance and lubrication, meet overlength
The demand of stroke, and structure is simple, it is easy to process.
Some specific embodiments according to the present invention, piston component 30 include locking nut 31, first piston 32 and second
Piston 33.
Specifically, locking nut 31 is set in the other end of piston rod 20, first piston 32 be set on piston rod 20 and
Neighbouring locking nut 31 is arranged, and second piston 33 is set on piston rod 20 and neighbouring first piston 32 is arranged.
It should be noted that in 33 outside integrated combination sealing ring of second piston, combined seal ring collection sealing and guiding
Function, and has very strong wear resistance in itself, after sealing in conjunction with guide function, 33 outside of second piston
Space greatly reduces, and in this way in the case where total kilometres inconvenience, provides and more may be used for the navigation designing at 40 end of guide sleeve
Can, but combined seal ring is relatively difficult due to assembling, if being made into piston entirety, combined seal ring is easy quilt in assembling process
Deformation is haled to be packed into static seal slot 331, the damage of combined seal ring is be easy to cause, as a result, by the way that piston is decomposed into first
Piston 32, second piston 33, and be attached by locking nut 31, in assembling process, combined seal ring is packed into first
Then second piston 33 reassembles first piston 32, finally screw in locking nut 31, which is easily assembled and tears open
It unloads.Wherein, locking nut 31 is national standard nut, does not need additional processing, reduces workload.
Further, the inner wall of second piston 33 is equipped with annular static seal slot 331, and piston component 30 further includes sealing
Circle, sealing ring are located in static seal slot 331.
That is, devising static seal slot 331 in the root of second piston 33 with for placing O-ring seals, this is close
Seal is mainly acted on by two, first is that playing the role of the static seal between big chamber and small chamber, second is that can prevent high pressure oil from passing through
The root for entering combined seal ring by the bottom of first piston 32 causes combined seal ring volume to tilt and loses sealability.
According to one embodiment of present invention, the inner wall of 31 adjacent piston bar of locking nut, 20 one end is equipped with mating groove,
Piston component 30 further includes junction of the edges of two sheets of paper screw 34, and junction of the edges of two sheets of paper screw 34 is located in mating groove, stable structure.
Optionally, elongated oil cylinder 100 further includes connection frame 60 and pressing plate 70.
Specifically, connection frame 60 is formed as annular element and is set on guide sleeve 40, and pressing plate 70 is formed as annular slab, pressing plate
70 are set in one end of guide sleeve 40 and only support guide sleeve 40 and connection frame 60, pressing plate 70 and connection frame 60 respectively at least partially
It is bolted with cylinder body 10.
In other words, elongated oil cylinder 100 in use, usually requires to be connected with connecting plate, such as in 40 side of guide sleeve
Fruit is by the way of being threadedly coupled, it is necessary to connecting plate is individually weldingly fixed on cylinder body 10, but due to connecting plate itself
Size it is very big, need very big welding capacity, for the oil cylinder of such small dimension, cylinder body 10 certainly will be difficult to bear to weld greatly
Bring welding deformation is measured, as a result, by using screw connection guide sleeve 40 and cylinder body 10, and is arranged in the end face of guide sleeve 40
One pressing plate 70, and the connection frame 60 being connected with connecting plate is designed as circular ring shape, connection frame 60 is located at cylinder body and guide sleeve 40
Between, it is respectively equipped with through-hole on pressing plate 70 and connection frame 60, screw kills two birds with one stone, while connecting pressing plate 70, connection frame 60 and cylinder
Body, stable structure are easily installed and dismantle.
Preferably, axle sleeve 50 and guide sleeve 40 are interference fitted, and specifically, the inner ring of axle sleeve 50 can process helicla flute and cover
It is located on piston rod 20, the gap between guide sleeve 40 and axle sleeve 50 can be done greatly, first do not needed to finish, second improved slot
Rib is avoided as much as wearing.
According to one embodiment of present invention, axle sleeve 50 is brass material part, and brass material intensity is high, and wearability is strong.
In one embodiment of the invention, the inner wall of guide sleeve 40 is additionally provided with annular oil storage tank, the neighbouring peace of oil storage tank
It one end where tankage and is coaxially disposed with mounting groove.
That is, at the positioning that 50 right end face of axle sleeve and guide sleeve 40 cooperate, set on guide sleeve 40 one it is larger
Oil storage tank, the oil liquid that the just right receiving of the oil storage tank is flowed via copper sheathing screw thread lubrication groove.The gap of axle sleeve 50 and spiral shell
The cooperation of the structures such as line, oil storage tank is will not pull piston rod 20 while guaranteeing guiding again.
Optionally, guide sleeve 40 is additionally provided with multiple placing grooves adjacent to the inner wall of the other end, between placing groove and oil storage tank
Equipped with gap, elongated oil cylinder 100 further includes multiple sealing elements, and multiple sealing elements are respectively provided in multiple placing grooves, from axle sleeve 50
The oil liquid that gap is flowed between piston rod 20 plays lubricating action to subsequent sealing element, sealing element mainly include bumper ring,
Primary seal circle, dustband.
To sum up, elongated oil cylinder 100 according to an embodiment of the present invention, by limiting mounting groove in guide sleeve 40,
Axle sleeve 50 is located in mounting groove, which can not only guarantee the stability of piston rod 20 guiding performance and lubrication, is met
The demand of ultralong-stroke, and structure is simple, it is easy to process.
Engineering machinery according to an embodiment of the present invention includes the elongated oil cylinder 100 according to above-described embodiment, due to according to this
The elongated oil cylinder 100 of invention above-described embodiment has above-mentioned technique effect, therefore, engineering machinery according to an embodiment of the present invention
With corresponding technical effect, the sequencing of oil cylinder operation can not only be realized, and save space.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of elongated oil cylinder characterized by comprising
Cylinder body defines axially extending and open at one end installation cavity along its in the cylinder body；
Piston rod, the piston rod is movably located in the installation cavity along the axial direction of the cylinder body and the peace is stretched out in one end
It behave affectedly；
Piston component, the piston component are located in the installation cavity and are set in the other end of piston rod；
Guide sleeve, described to be oriented to the one end for being set in the cylinder body and be set on the piston rod, the guide sleeve is towards institute
The inner wall for stating piston one end is equipped with annular mounting groove；
Axle sleeve, the axle sleeve are set on the piston rod and are mounted in the mounting groove, and the inner wall of the axle sleeve is equipped with
Helicla flute.
2. elongated oil cylinder according to claim 1, which is characterized in that the piston component includes:
Locking nut, the locking nut are set in the other end of the piston rod；
First piston, the first piston is set on the piston rod and the neighbouring locking nut is arranged；
Second piston, the second piston is set on the piston rod and the neighbouring first piston is arranged.
3. elongated oil cylinder according to claim 2, which is characterized in that it is quiet close that the inner wall of the second piston is equipped with annular
Sealing groove, the piston component further include:
Sealing ring, the sealing ring are located in the static seal slot.
4. elongated oil cylinder according to claim 2, which is characterized in that the locking nut is adjacent to described piston rod one end
Inner wall is equipped with mating groove, the piston component further include:
Junction of the edges of two sheets of paper screw, the junction of the edges of two sheets of paper screw are located in the mating groove.
5. elongated oil cylinder according to claim 1, which is characterized in that further include:
Connection frame, the connection frame are formed as annular element and are set on the guide sleeve；
Pressing plate, the pressing plate are formed as annular slab, and the pressing plate is set in one end of the guide sleeve and at least part respectively
It only supports the guide sleeve and the connection frame and is connect with the connection frame and the cylinder bolt.
6. elongated oil cylinder according to claim 1, which is characterized in that the axle sleeve and the guide sleeve are interference fitted.
7. elongated oil cylinder according to claim 1, which is characterized in that the axle sleeve is brass material part.
8. elongated oil cylinder according to claim 1, which is characterized in that the inner wall of the guide sleeve is additionally provided with annular oil storage
Slot, the oil storage tank are coaxially disposed adjacent to one end where the mounting groove and with the mounting groove.
9. elongated oil cylinder according to claim 8, which is characterized in that the guide sleeve is also set adjacent to the inner wall of the other end
There are multiple placing grooves, gap, the elongated oil cylinder be equipped between the placing groove and the oil storage tank further include:
Multiple sealing elements, multiple sealing elements are respectively provided in multiple placing grooves.
10. a kind of engineering machinery, which is characterized in that including elongated oil cylinder of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910608173.4A CN110273890A (en) | 2019-07-08 | 2019-07-08 | Elongated oil cylinder and engineering machinery with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910608173.4A CN110273890A (en) | 2019-07-08 | 2019-07-08 | Elongated oil cylinder and engineering machinery with it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110273890A true CN110273890A (en) | 2019-09-24 |
Family
ID=67962995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910608173.4A Pending CN110273890A (en) | 2019-07-08 | 2019-07-08 | Elongated oil cylinder and engineering machinery with it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110273890A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004092914A (en) * | 2003-12-03 | 2004-03-25 | Semiconductor Leading Edge Technologies Inc | Cylinder |
| CN101900147A (en) * | 2010-07-13 | 2010-12-01 | 合肥锻压机床有限公司 | Ultra-slender oil cylinder structure device of hydraulic press |
| CN202646219U (en) * | 2012-05-18 | 2013-01-02 | 抚顺天宝重工液压制造有限公司 | Long-stroke hydraulic cylinder |
| CN204127020U (en) * | 2014-09-12 | 2015-01-28 | 西安磁林电气有限公司 | A kind of cylinder |
| CN104930059A (en) * | 2015-06-12 | 2015-09-23 | 苏州纽东精密制造科技有限公司 | Shaft sleeve |
| CN108302087A (en) * | 2018-04-11 | 2018-07-20 | 江苏恒立液压股份有限公司 | Long stroke elevating ram |
| CN208311181U (en) * | 2017-11-27 | 2019-01-01 | 江苏恒立液压股份有限公司 | Oil cylinder guide sleeve |
-
2019
- 2019-07-08 CN CN201910608173.4A patent/CN110273890A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004092914A (en) * | 2003-12-03 | 2004-03-25 | Semiconductor Leading Edge Technologies Inc | Cylinder |
| CN101900147A (en) * | 2010-07-13 | 2010-12-01 | 合肥锻压机床有限公司 | Ultra-slender oil cylinder structure device of hydraulic press |
| CN202646219U (en) * | 2012-05-18 | 2013-01-02 | 抚顺天宝重工液压制造有限公司 | Long-stroke hydraulic cylinder |
| CN204127020U (en) * | 2014-09-12 | 2015-01-28 | 西安磁林电气有限公司 | A kind of cylinder |
| CN104930059A (en) * | 2015-06-12 | 2015-09-23 | 苏州纽东精密制造科技有限公司 | Shaft sleeve |
| CN208311181U (en) * | 2017-11-27 | 2019-01-01 | 江苏恒立液压股份有限公司 | Oil cylinder guide sleeve |
| CN108302087A (en) * | 2018-04-11 | 2018-07-20 | 江苏恒立液压股份有限公司 | Long stroke elevating ram |
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