CN108443264A - Level Four oil cylinder - Google Patents
Level Four oil cylinder Download PDFInfo
- Publication number
- CN108443264A CN108443264A CN201810809020.1A CN201810809020A CN108443264A CN 108443264 A CN108443264 A CN 108443264A CN 201810809020 A CN201810809020 A CN 201810809020A CN 108443264 A CN108443264 A CN 108443264A
- Authority
- CN
- China
- Prior art keywords
- piston
- level
- chamber
- oil cylinder
- spool
- 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
- F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The present invention provides a kind of level Four oil cylinder, including：Cylinder body, chamber is defined in the cylinder body, and the cylinder body is equipped with the hydraulic fluid port seat with the chamber；Multiple piston components, multiple piston component intervals are opened in the chamber to divide the chamber into multiple portions, and multiple piston components are movable along the axial direction of the cylinder body；Multiple check valves, multiple check valves are located in the chamber to control the operation of the indoor fluid of the chamber, and multiple check valves are connected with multiple piston components respectively so that multiple piston components form sealing structure with the chamber respectively.Level Four oil cylinder according to the ... of the embodiment of the present invention, pass through multiple piston components and cooperation activity of the check valve in the chamber of level Four oil cylinder, it can ensure the stationarity of level Four cylinder movement, improve the operating efficiency of level Four oil cylinder, the level Four oil cylinder is safe and reliable, service life is long, can be good at meeting the work requirements from telescopic aerial work platform of walking.
Description
Technical field
The present invention relates to mechanical-hydraulic technical fields, more particularly, to a kind of level Four oil cylinder.
Background technology
Existing stretching and retraction from telescopic aerial work platform of walking is generally adopted by by motor-driven
Chain-type jacking system, the maximum load which can carry is limited, and subsequently for the maintenance of chain
It is comparatively laborious with repairing, it is unfavorable for long-time non-stop run, not only increases cost, and reduce operating efficiency.
Invention content
In view of this, the present invention provides a kind of stable movement, securely and reliably, level Four oil cylinder with long service life.
In order to solve the above technical problems, the present invention uses following technical scheme：
Level Four oil cylinder according to the ... of the embodiment of the present invention, including：Cylinder body defines chamber in the cylinder body, and the cylinder body is equipped with
With the hydraulic fluid port seat of the chamber；Multiple piston components, multiple piston component intervals are opened in the chamber to incite somebody to action
The chamber is separated into multiple portions, and multiple piston components are movable along the axial direction of the cylinder body；Multiple check valves, it is multiple
The check valve is located in the chamber to control the operation of the indoor fluid of the chamber, multiple check valves respectively with it is multiple
The piston component is connected so that multiple piston components form sealing structure with the chamber respectively.
Further, the piston component is four, and four piston components divide the chamber into four volumes
Equal part.
Further, four piston component coaxial arrangements, four piston components are between the axial direction of the chamber
Size arranged apart and in the radial direction thereof is sequentially reduced.
Further, each piston component respectively includes：The section of piston, the piston is generally formed into Contraband shape；
Piston rod, one end of the piston rod are connected with the piston；Guide sleeve, the guiding are set in the another of the piston rod
One end, the piston are movable along the axial direction of the guide sleeve by the piston rod.
Further, it is connected by screw or bolt between the piston rod and the piston and the guide sleeve.
Further, the upper end of the piston, which is spaced apart, is equipped with the first guide ring and first through hole, and the first through hole is logical
Overstocked seals.
Further, it is spaced apart on the guide sleeve and is equipped with multiple second through-holes, each second through-hole passes through sealing
Part seals.
Further, the sealing element is formed as one or more in sealing ring, baffle ring or dustband.
Further, the check valve includes：Spool, the spool are connected with the piston；Steel ball mandril, the steel ball
Mandril is located on the spool；Steel ball, the steel ball are located on the piston and match with the spool and the steel ball mandril
Conjunction is run with controlling the fluid in the chamber.
Further, the section of the spool is generally formed into T-shaped, and the spool passes through the steel ball mandril and at least
A part only supports the piston.
Further, the check valve further includes the second guide ring, and second guide ring is spaced apart cloth with the spool
It sets to control the activity direction of the piston.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
Level Four oil cylinder according to the ... of the embodiment of the present invention, by multiple piston components with check valve matching in the chamber of level Four oil cylinder
Conjunction activity can ensure the stationarity of level Four cylinder movement, improve the operating efficiency of level Four oil cylinder, which safely may be used
It leans on, service life is long, can be good at meeting the work requirements from telescopic aerial work platform of walking.
Description of the drawings
Fig. 1 is the sectional view of the level Four oil cylinder of the embodiment of the present invention；
Fig. 2 is the partial enlarged view of A in Fig. 1；
Fig. 3 is the partial enlarged view of B in Fig. 1.
Reference numeral：
Level Four oil cylinder 100；
Cylinder body 10；Chamber 11；
Piston component 20；Piston 21；First guide ring 211；First through hole 212；Piston rod 22；Guide sleeve 23；Second through-hole
231；
Check valve 30；Spool 31；Steel ball mandril 32；Second guide ring 33；Steel ball 34；
Hydraulic fluid port seat 40.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Attached drawing, the technical solution of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on described the embodiment of the present invention, ordinary skill
The every other embodiment that personnel are obtained, shall fall within the protection scope of the present invention.
Unless otherwise defined, the technical term or scientific terminology used in the present invention is should be in fields of the present invention
The ordinary meaning that personage with general technical ability is understood." first ", " second " and the similar word used in the present invention
It is not offered as any sequence, quantity or importance, and is used only to distinguish different component parts.Equally, "one" or
The similar word such as " one " does not indicate that quantity limits yet, but indicates that there are at least one." connection " or " connected " etc. are similar
Word is not limited to physics or mechanical connection, but may include electrical connection, either directly or between
It connects."upper", "lower", "left", "right" etc. are only used for indicating relative position relation, when the absolute position for being described object changes
Afterwards, then the relative position relation also correspondingly changes.
Level Four oil cylinder 100 according to the ... of the embodiment of the present invention is specifically described below in conjunction with the accompanying drawings.
As shown in Figure 1 to Figure 3, level Four oil cylinder 100 according to the ... of the embodiment of the present invention includes cylinder body 10, multiple piston components 20
With check valve 30.
Specifically, defining chamber 11 in cylinder body 10, cylinder body 10 is equipped with the hydraulic fluid port seat 40 being connected to chamber 11.It is multiple
The interval of piston component 20 is opened in chamber 11 so that chamber 11 is separated into multiple portions, and multiple piston components 20 are along cylinder body 10
It is axial movable.Multiple check valves 30 are located in chamber 11 to control the operation of the fluid in chamber 11, and multiple check valves 30 divide
It is not connected with multiple piston components 20 so that multiple piston components 20 form sealing structure with chamber 11 respectively.
In other words, level Four oil cylinder 100 according to the ... of the embodiment of the present invention is mainly by cylinder body 10, multiple piston components 20 and unidirectional
Valve 30 forms.Wherein, it can be machined with chamber 11 in cylinder body 10, hydraulic fluid port seat 40 can be installed on cylinder body 10, hydraulic fluid port seat 40 can be with
It is connected to chamber 11.Hydraulic oil can carry out logical oil by hydraulic fluid port seat 40, push the stretching of level Four oil cylinder 100, and level Four oil
Cylinder 100 can lean on the retraction of its dead weight realization level Four oil cylinder 100.
Multiple piston components 20, which are spaced apart, to be mounted in chamber 11, and chamber 11 can be separated into more by multiple piston components 20
A part, multiple piston components 20 can be along the axial carry out activities of cylinder body 10.Each piston component 20 can be in cylinder body 10
It is axial to carry out uniform motion, ensure the stationarity of 100 movement of level Four oil cylinder, extends the service life of level Four oil cylinder 100.Chamber 11
Interior to install multiple check valves 30, multiple individual event valves can control the operation of the fluid in chamber 11.Multiple check valves 30
Can be connected respectively with multiple piston components 20, and multiple check valves 30 can be matched with multiple piston components 20 with chamber
Room 11 forms sealing structure, ensures the work of level Four oil cylinder 100 well, improves the operating efficiency of level Four oil cylinder 100.
Level Four oil cylinder 100 according to the ... of the embodiment of the present invention as a result, by multiple piston components 20 and check valve 30 in level Four
Cooperation activity in the chamber 11 of oil cylinder 100 can ensure the stationarity that level Four oil cylinder 100 moves, and improve level Four oil cylinder 100
Operating efficiency, the level Four oil cylinder 100 is safe and reliable, and service life is long, can be good at meeting from telescopic working at height of walking
The work requirements of platform.
According to one embodiment of present invention, piston component 20 is four, and chamber 11 is separated by four piston components 20
The equal part of four volumes.
That is, the piston component 20 in the chamber 11 of level Four oil cylinder 100 can preferably install four, certainly, chamber
Piston component 20 in 11 can specifically be set according to different job requirements.Four piston components 20 can be by chamber 11
Be separated into four equal parts of volume, can preferably ensure each piston component 20 stretch out when can uniform motion, make four
The grade movement of oil cylinder 100 is more steady, improves the operating efficiency of level Four oil cylinder 100, extends the service life of level Four oil cylinder 100, section
About production cost.
In certain specific embodiments of the invention, four piston components 20 are coaxially disposed, four 20 edges of piston component
The axially spaced arrangement of chamber 11 and size in the radial direction thereof is sequentially reduced.
In other words, four piston components 20 can be coaxially disposed in chamber 11, and four piston components 20 can be along chamber
The axially spaced arrangement of room 11, and the size of four piston components 20 in the radial direction thereof is sequentially reduced, and ensures four pistons
Chamber 11 can be fifty-fifty divided into four deciles by component 20, and can preferably ensure can be even when each piston component 20 stretches out
Speed movement keeps the movement of level Four oil cylinder 100 more steady, improves the operating efficiency of level Four oil cylinder 100, extends level Four oil cylinder 100
Service life saves production cost.
According to one embodiment of present invention, each piston component 20 respectively includes piston 21, piston rod 22 and guide sleeve
23。
Specifically, the section of piston 21 is generally formed into Contraband shape, and one end of piston rod 22 is connected with piston 21, guide sleeve 23
It is located at the other end of piston rod 22, piston 21 is movable along the axial direction of guide sleeve 23 by piston rod 22.
That is, each piston component 20 can be made of piston 21, piston rod 22 and guide sleeve 23 respectively.Wherein,
The section of piston 21 can be generally machined to Contraband shape, and one end of piston rod 22 can be connected with the free end of piston 21, adjacent diameter
The piston 21 smaller to size may be mounted at the groove of the piston 21 of the larger Contraband shape of radial dimension.Guide sleeve 23 can pacify
Mounted in the other end of piston rod 22, piston 21 can ensure that piston 21 exists by piston rod 22 along the axial activity of guide sleeve 23
The direction of motion in chamber 11.
In certain specific embodiments of the invention, between piston rod 22 and piston 21 and guide sleeve 23 by screw or
Bolt is connected.
In other words, it can be detachably connected by screw or bolt between piston rod 22 and piston 21, piston rod 22
It can also be detachably connected by screw or bolt between guide sleeve 23, improve piston rod 22 and piston 21 and guide sleeve
Efficiency of assembling between 23.Screw or bolt can be processed into the screw with interior hexagonal or the bolt with interior hexagonal, certainly,
Screw or bolt can also be processed into other shapes, also, the specific machining shape of screw or bolt is for the technology of this field
It is it is appreciated that and easy to implement for personnel.
According to one embodiment of present invention, the upper end of piston 21, which is spaced apart, is equipped with the first guide ring 211 and first through hole
212, first through hole 212 is sealed by sealing element.
That is, the upper end of piston 21 can be machined with the first guide ring 211 and first through hole 212.First guide ring
211 and first through hole 212 can be spaced apart processing on piston 21, first through hole 212 can be sealed by sealing element, be carried
The overall tightness of high level Four oil cylinder 100 ensures the normal work of level Four oil cylinder 100.
It is spaced apart in certain specific embodiments of the invention, on guide sleeve 23 and is equipped with multiple second through-holes 231, each
Second through-hole 231 is sealed by sealing element.
In other words, multiple second through-holes 231 can be machined on guide sleeve 23, multiple second through-holes 231 can be spaced
Processing is opened on guide sleeve 23, each second through-hole 231 can be sealed by sealing element, improve the whole of level Four oil cylinder 100
Body leakproofness ensures the normal work of level Four oil cylinder 100.
In the technical field of hydraulic system, the first through hole 212 on the second through-hole 231 and piston 21 on guide sleeve 23
It has very important effect.First, the cooperation of the second through-hole 231 on guide sleeve 23 and the first through hole 212 on piston 21
Can effectively reduce the friction between piston rod 22, guide sleeve 23 and cylinder body 10, improve level Four oil cylinder 100 operating efficiency and
The operation service life.Meanwhile the second through-hole 231 on guide sleeve 23 also has exhaust during level Four oil cylinder 100 stretches operation
Function, and coordinate the overall tightness that can improve level Four oil cylinder 100 again with sealing element after exhaust, ensure level Four oil cylinder
100 normal work.Certainly, function possessed by the first through hole 212 on the second through-hole 231 and piston 21 on guide sleeve 23
With effect and how to realize this function, will be understood by for the technical staff such as this field, in this application
No longer it is described in detail.
According to one embodiment of present invention, sealing element is formed as one or more in sealing ring, baffle ring or dustband.
That is, sealing element may be used it is one or more in sealing ring, baffle ring or dustband.Sealing ring, baffle ring or
The concrete shape of dustband can be specifically arranged according to the concrete shape of first through hole 212 or the second through-hole 231, ensure close
Sealing can well be sealed first through hole 212 or the second through-hole 231, improve the overall tightness of level Four oil cylinder 100,
Ensure the normal work of level Four oil cylinder 100.
In certain specific embodiments of the invention, check valve 30 includes spool 31, steel ball mandril 32 and steel ball 34.
Specifically, spool 31 is connected with piston 21, and steel ball mandril 32 is located on spool 31, steel ball 34 be located on piston 21 and
It is matched with spool 31 and steel ball mandril 32 to control fluid operation in chamber 11.
In other words, check valve 30 is mainly made of spool 31, steel ball mandril 32 and steel ball 34.Wherein, spool 31 can be with
On piston 21, steel ball mandril 32 may be mounted on spool 31, and steel ball 34 may be mounted on piston 21, and steel ball
34 can be coordinated with spool 31 and steel ball mandril 32, in order to which check valve 30 controls fluid operation in chamber 11.
According to one embodiment of present invention, the section of spool 31 is generally formed into T-shaped, and spool 31 passes through steel ball mandril
32 and at least part only support piston 21.
That is, the section of spool 31 can be generally machined to it is T-shaped, spool 31 can pass through steel ball mandril 32, valve
At least part of core can only support piston 21, and steel ball 34 can be coordinated with spool 31 and steel ball mandril 32, in order to list
Fluid is controlled to valve 30 to run in chamber 11.
According to one embodiment of present invention, check valve 30 further includes the second guide ring 33.
Specifically, the second guide ring 33 and spool 31 are arranged spaced apart to control the activity direction of piston 21.
That is, check valve 30 can also include the second guide ring 33.Second guide ring 33 can be spaced with spool 31
Arrangement is opened, the second guide ring 33 can control the activity direction of piston 21.
To sum up, level Four oil cylinder 100 according to the ... of the embodiment of the present invention, is existed by multiple piston components 20 and check valve 30
Cooperation activity in the chamber 11 of level Four oil cylinder 100 can ensure the stationarity that level Four oil cylinder 100 moves, and improve level Four oil cylinder
100 operating efficiency, the level Four oil cylinder 100 is safe and reliable, and service life is long, can be good at meeting from telescopic high-altitude of walking
The work requirements of job platform.
The course of work of the level Four oil cylinder 100 of the present invention is described below in conjunction with the accompanying drawings and according to specific embodiment.
As shown in Figure 1 to Figure 3, the level Four oil cylinder 100 of the embodiment of the present invention is mainly by cylinder body 10,20 and of multiple piston components
Check valve 30 forms.At work, hydraulic oil can carry out logical oil, 4 piston components 20 to level Four oil cylinder 100 by hydraulic fluid port seat 40
Chamber 11 can be separated into 4 deciles, each piston component 20 can be along the axial carry out activity of cylinder body 10.And it each lives
Plug assembly 20 can carry out uniform motion in the axial of cylinder body 10.Level Four oil cylinder 100 is during stretching, each piston component
20 in chamber 11 uniform motion, also, form sealing structure between piston 21, guide sleeve 23 and chamber 11, ensure level Four oil
The normal work of cylinder 100.For level Four oil cylinder 100 during contraction, the second through-hole 231 on guide sleeve 23 has exhaust work(
Can, ensure that level Four oil cylinder 100 being capable of normal operation when flexible.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ", " preferably
The description of embodiment ", " specific implementation mode " or " preferred embodiment " etc. means tool described in conjunction with this embodiment or example
Body characteristics, structure, material or feature are included at least one embodiment or example of the invention.In the present specification, right
The schematic representation of above-mentioned term may not refer to the same embodiment or example.Moreover, description specific features, structure,
Material or feature can be combined in any suitable manner in any one or more of the embodiments or examples.
The above is the 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 level Four oil cylinder, which is characterized in that including：
Cylinder body, chamber is defined in the cylinder body, and the cylinder body is equipped with the hydraulic fluid port seat with the chamber；
Multiple piston components, multiple piston component intervals are opened in the chamber to divide the chamber into multiple portions
Point, multiple piston components are movable along the axial direction of the cylinder body；
Multiple check valves, multiple check valves are located in the chamber to control the operation of the indoor fluid of the chamber, multiple
The check valve be connected respectively with multiple piston components so that multiple piston components formed respectively with the chamber it is close
Seal structure；
The check valve includes：
Spool, the spool are connected with the piston；
Steel ball mandril, the steel ball mandril are located on the spool；
Steel ball, the steel ball are located on the piston and are matched with the spool and the steel ball mandril to control the fluid
It is run in the chamber.
2. level Four oil cylinder according to claim 1, which is characterized in that the piston component is four, four pistons
Component divides the chamber into four equal parts of volume.
3. level Four oil cylinder according to claim 2, which is characterized in that four piston component coaxial arrangements, four institutes
State piston component along the chamber axially spaced arrangement and size in the radial direction thereof be sequentially reduced.
4. level Four oil cylinder according to claim 2, which is characterized in that each piston component respectively includes：
The section of piston, the piston is generally formed into Contraband shape；
Piston rod, one end of the piston rod are connected with the piston；
Guide sleeve, described to be oriented to the other end for being set in the piston rod, the piston is by the piston rod described in
The axial direction of guide sleeve is movable.
5. level Four oil cylinder according to claim 4, which is characterized in that the piston rod and the piston and the guide sleeve
Between be connected by screw or bolt.
6. level Four oil cylinder according to claim 4, which is characterized in that the upper end of the piston, which is spaced apart, is equipped with the first guiding
Ring and first through hole, the first through hole are sealed by sealing element.
7. level Four oil cylinder according to claim 4, which is characterized in that be spaced apart on the guide sleeve logical equipped with multiple second
Hole, each second through-hole are sealed by sealing element.
8. the level Four oil cylinder described according to claim 6 or 7, which is characterized in that the sealing element be formed as sealing ring, baffle ring or
It is one or more in dustband.
9. level Four oil cylinder according to claim 4, which is characterized in that the section of the spool is generally formed into T-shaped, institute
Spool is stated across the steel ball mandril and at least part is only to the piston.
10. level Four oil cylinder according to claim 9, which is characterized in that the check valve further includes the second guide ring, described
Second guide ring and the spool are arranged spaced apart to control the activity direction of the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809020.1A CN108443264A (en) | 2018-07-23 | 2018-07-23 | Level Four oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809020.1A CN108443264A (en) | 2018-07-23 | 2018-07-23 | Level Four oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108443264A true CN108443264A (en) | 2018-08-24 |
Family
ID=63207081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810809020.1A Pending CN108443264A (en) | 2018-07-23 | 2018-07-23 | Level Four oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108443264A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56164208A (en) * | 1980-05-23 | 1981-12-17 | Nippon Kiki Kogyo Kk | Constant-velocity multistage cylinder device |
| CN201050516Y (en) * | 2007-06-04 | 2008-04-23 | 南通液压机械有限公司 | Multi-stage synchronous extension double-acting hydraulic cylinder |
| CN104358738A (en) * | 2014-10-14 | 2015-02-18 | 北京工业大学 | Sequentially-acting multilevel air cylinder |
| CN105298981A (en) * | 2015-10-12 | 2016-02-03 | 江苏恒立高压油缸股份有限公司 | Safe and reliable derrick lifting multistage cylinder |
-
2018
- 2018-07-23 CN CN201810809020.1A patent/CN108443264A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56164208A (en) * | 1980-05-23 | 1981-12-17 | Nippon Kiki Kogyo Kk | Constant-velocity multistage cylinder device |
| CN201050516Y (en) * | 2007-06-04 | 2008-04-23 | 南通液压机械有限公司 | Multi-stage synchronous extension double-acting hydraulic cylinder |
| CN104358738A (en) * | 2014-10-14 | 2015-02-18 | 北京工业大学 | Sequentially-acting multilevel air cylinder |
| CN105298981A (en) * | 2015-10-12 | 2016-02-03 | 江苏恒立高压油缸股份有限公司 | Safe and reliable derrick lifting multistage cylinder |
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Application publication date: 20180824 |