CN107165887A - A kind of oil storage hydraulic cylinder - Google Patents
A kind of oil storage hydraulic cylinder Download PDFInfo
- Publication number
- CN107165887A CN107165887A CN201710551941.8A CN201710551941A CN107165887A CN 107165887 A CN107165887 A CN 107165887A CN 201710551941 A CN201710551941 A CN 201710551941A CN 107165887 A CN107165887 A CN 107165887A
- Authority
- CN
- China
- Prior art keywords
- cylinder barrel
- piston rod
- cylinder
- core pipe
- baffle plate
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 22
- 239000010720 hydraulic oil Substances 0.000 abstract description 14
- 239000003921 oil Substances 0.000 abstract description 12
- 239000013589 supplement Substances 0.000 abstract description 5
- 239000010729 system oil Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
- F15B15/1457—Piston rods
-
- 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
- F15B15/1433—End caps
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 announces a kind of oil storage hydraulic cylinder, belongs to hydraulic cylinder technical field.Piston rod including cylinder barrel and in cylinder barrel；Described piston rod the inner is provided with piston, and cylinder barrel outer end is provided with end cap；Axial cylindrical inner chamber is provided with the piston rod, the oil-through-hole of communication with cavity and rod chamber is provided with piston rod the inner；The interior intracavitary is slidably fitted with baffle plate；Sealing device is provided between baffle plate and the piston rod inwall；Core pipe provided with one with cylinder barrel axis parallel in the cylinder barrel；The core pipe passes through piston rod, and is fixedly connected with baffle plate, and core pipe the inner is fixed on cylinder barrel bottom；The connection core pipe passage extraneous with cylinder barrel is provided with cylinder barrel bottom.The present invention effectively utilizes hydraulic cylinder inner space in hydraulic cylinder internal reservoir fluid；Make hydraulic cylinder in use, it is only necessary to which hydraulic system additionally supplements a small amount of hydraulic oil；Hydraulic oil container volume can be reduced, simplify system and structural member, be conducive to the lightweight of complete machine.
Description
Technical field
The present invention relates to hydraulic cylinder technical field, specifically a kind of oil storage hydraulic cylinder.
Background technology
Hydraulic cylinder is as the executive component of hydraulic system, and it has drive mechanism simple, can transmit the features such as power is big,
Using relatively broad in engineering machinery.Conventional hydraulic cylinder is generally double acting hydraulic cylinder, it is possible to provide thrust and pulling force.In piston rod
, it is necessary to which system oil-way supplies enough fluid in the flexible course of work, the hydraulic cylinder in particular by big format diameter, it is necessary to
System supplements a large amount of fluid, causes hydraulic oil container, pipeline to occupy larger space, adds main machine structure part size and weight, drops
The low lightweight level of main frame.
Conventional major diameter double acting hydraulic cylinder, the flexible hydraulic system oil circuit that fully relies on of its piston rod carries out fuel feeding,
This structure large-scale use in hydraulic cylinder product, needs hydraulic system to provide foot during piston rod is extended and retracted
Enough fluid, it is necessary to which the volume of hydraulic oil container is done for the large-scale engineering machinery of the big format diameter hydraulic cylinder used
It is sufficiently large, to store enough hydraulic oil, make hydraulic system normal work, force main frame reserve sizable space be used for pacify
Hydraulic oil container is filled, main machine structure part size and main screw lift is added.
So, the shortcoming of conventional major diameter double acting hydraulic cylinder is：Volume and weight itself is larger, is stretched out in piston rod
During retraction, need hydraulic system to supply enough fluid, configure larger hydraulic oil container, take the larger structure of complete machine empty
Between, the weight of main machine structure part is added, is unfavorable for being lifted the lightweight level of engineering machinery vehicle.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of oil storage hydraulic cylinder.
The present invention is achieved through the following technical solutions：A kind of oil storage hydraulic cylinder, including cylinder barrel and the work in cylinder barrel
Stopper rod；Described piston rod the inner is provided with piston, and cylinder barrel outer end is provided with end cap；It is provided with the piston rod axial cylindrical
Inner chamber, the oil-through-hole of communication with cavity and rod chamber is provided with piston rod the inner；The interior intracavitary is slidably fitted with baffle plate；The gear
Sealing device is provided between plate and piston rod inwall；Core pipe provided with one with cylinder barrel axis parallel in the cylinder barrel；The core
Pipe is fixedly connected through piston rod, and with baffle plate, and core pipe the inner is fixed on cylinder barrel bottom；Be provided with cylinder barrel bottom connection core pipe with
The extraneous passage of cylinder barrel.
It is further：The core pipe is provided with step-like shelves platform, core pipe and baffle plate connection end external-open with baffle plate connection end
There is external screw thread, core pipe is provided with clamp nut with baffle plate connection end；The baffle center is provided with through hole, is provided with baffle plate through hole
The step-like seam coordinated with core pipe shelves platform；Sealing device is provided between the core pipe and baffle plate through hole.
The piston rod includes the cylinder of cylindrical tube shape；Outer end cap is fixed with the outer end of the cylinder, in cylinder
End is fixed with inner end cap；The piston is arranged on the periphery of inner end cap；It is fixed for piston to be also equipped with the inner end cap
The baffle ring of position；The baffle ring is threadably on the periphery of inner end cap；The inner end cap is close to cylinder
One end is provided with counterbore；The oil-through-hole is opened on the inwall of inner end cap counterbore.
When piston rod is full reduced, the right side cavity volume that baffle plate is split in rod chamber and piston rod cavity is full of fluid, works as piston rod
During stretching, the right side cavity volume of piston rod cavity diminishes, and the fluid that right side cavity volume is stored crosses oil-through-hole and communicates and incite somebody to action with rod chamber
Fluid is discharged, and is transferred to by hydraulic system oil circuit outside oil cylinder；Meanwhile, the increase of the volume of rodless cavity 1 absorbs oil from hydraulic system
Liquid, is stored in hydraulic cylinder；In addition, cavity volume becomes big on the left of piston rod cavity, absorb empty by core pipe and cylinder barrel bottom air vent
Gas, to prevent left side cavity volume formation negative pressure.
When piston rod is retracted, under the separation of baffle plate, cavity volume becomes big on the right side of piston rod cavity, from hydraulic system oil circuit
Fluid is absorbed, is stored in hydraulic cylinder；Meanwhile, the volume of rodless cavity 1 reduces, and fluid is discharged into hydraulic system；In addition, piston rod
Cavity volume diminishes on the left of inner chamber, and air is excluded by core pipe and cylinder barrel small hole at bottom part.
Inventive piston bar inner chamber utilizes the compartmentation of baffle plate, and its inner chamber is separated into two transformable cavity volumes；
The stretching of piston rod, retract during the fluid stored in oil cylinder is shifted into storage between rod chamber, rodless cavity, piston rod cavity
Deposit, hydraulic cylinder works process only only needs to a small amount of system fluid of extra supplement so that the hydraulic pressure oil phase that hydraulic cylinder needs in itself
To less.
Compared with prior art, the beneficial effects of the invention are as follows：
（1）In hydraulic cylinder internal reservoir fluid, hydraulic cylinder inner space is effectively utilized；
（2）The fluid of hydraulic cylinder storage can be added in hydraulic system, make hydraulic cylinder in use, it is only necessary to hydraulic pressure system
System additionally supplements a small amount of hydraulic oil；
（3）The use space of oil cylinder is improved, hydraulic oil container volume can be reduced, simplifies system and structural member, is conducive to complete machine
Lightweight.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the enlarged drawing at A in Fig. 1；
Fig. 3 is the enlarged drawing at B in Fig. 1.
In figure：1st, rodless cavity；2nd, core pipe；3rd, cylinder barrel；3-1, passage；4th, piston rod；4-1, oil-through-hole；4-2, the inner
Lid；4-3, cylinder；4-4, outer end cap；5th, rod chamber；6th, inner chamber；7th, baffle plate；8th, piston；9th, baffle ring.
Embodiment
The following is the specific embodiment of the present invention, in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1 to Figure 3, a kind of oil storage hydraulic cylinder, including cylinder barrel 3 and the piston rod 4 in cylinder barrel 3；Piston
The inner of bar 4 is provided with piston 8, and the outer end of cylinder barrel 3 is provided with end cap.
Piston rod 4 includes the cylinder 4-3 of cylindrical tube shape；Outer end cap 4-4 is fixed with cylinder 4-3 outer end, in cylinder 4-3
The inner be fixed with inner end cap 4-2；The cylindrical inner chamber of axial direction is formed between cylinder 4-3 and outer end cap 4-4, inner end cap 4-2
6.The baffle plate 7 that can be slided relatively is installed in inner chamber 6, sealing ring is provided between baffle plate 7 and the inwall of piston rod 4.Inner end cap 4-2 is left
End is provided with counterbore, and the oil-through-hole 4-1 of communication with cavity 6 and rod chamber 5 is provided with the inwall of inner end cap 4-2 counterbores.Piston 8 is installed
On inner end cap 4-2 periphery；The baffle ring 9 for being also equipped with positioning for piston 8 in inner end cap 4-2；Baffle ring 9 is with threaded connection
Mode be arranged on inner end cap 4-2 periphery on.
The bottom of cylinder barrel 3 is fixed on the right-hand member of the core pipe 2 of the axis parallel of cylinder barrel 3, connection core pipe 2 is provided with the bottom of cylinder barrel 3
The extraneous passage 3-1 with cylinder barrel 3；Core pipe 2 passes through inner end cap 4-2, and sealing ring is provided between core pipe 2 and inner end cap 4-2.Core pipe
2 left ends are provided with step-like shelves platform, and the center of baffle plate 7 is provided with through hole, and the platform coordinated with 2 grades of platforms of core pipe is provided with the through hole of baffle plate 7
Scalariform seam；The right-hand member of core pipe 2 passes through the through hole of baffle plate 7, then by being fixed installed in the clamp nut of the right-hand member of core pipe 2.
Sealing ring is provided between core pipe 2 and the through hole of baffle plate 7.
Operation principle：
The inner chamber 6 of piston rod 4 is divided into the cavity volume of two closings by baffle plate 7, wherein, right side cavity volume is by oil-through-hole 4-1 and has bar
Chamber 5 is communicated, and left side cavity volume is communicated by core pipe 2 and passage 3-1 with air；
Piston rod 4 stretching during, the right side cavity volume of inner chamber 6 diminishes, the fluid that right side cavity volume is stored by oil-through-hole 4-1 with
Rod chamber 5 is communicated and is discharged to outside oil cylinder；But during this, the cavity volume of rodless cavity 1 becomes big, and fluid is absorbed from hydraulic system,
It is stored in hydraulic cylinder；So, from the fluid total amount in hydraulic cylinder, its The hydraulic oil stored is varied less；
During the retraction of piston rod 4, the right side cavity volume of inner chamber 6 becomes big, and fluid is absorbed from hydraulic system and is stored in hydraulic cylinder；
But cavity volume of rodless cavity 1 diminishes during this, the fluid in rodless cavity 1 is discharged from hydraulic cylinder；Therefore, out of hydraulic cylinder
Fluid total amount on see, its store The hydraulic oil vary less.
By effective trans-utilization of rodless cavity 1, rod chamber 5 and the inner chamber of piston rod 6, hydraulic cylinder can store fluid,
During the stretching of double acting hydraulic cylinder is retracted, it is only necessary to seldom hydraulic oil is supplemented from hydraulic system.The use of the present invention, especially
It is the double acting hydraulic cylinder to big format diameter, and a large amount of fluid of its internal reservoir only need hydraulic pressure system stretching out retraction process
The seldom hydraulic oil of system supplement, the use function without influenceing hydraulic cylinder, reduces construction machinery hydraulic oil tank volume, reduces hydraulic pressure
Fuel tank reaches light-weighted purpose to the demand in main machine structure space.
Claims (3)
1. a kind of oil storage hydraulic cylinder, including cylinder barrel（3）With installed in cylinder barrel（3）Interior piston rod（4）；The piston rod（4）It is interior
End is provided with piston（8）, cylinder barrel（3）Outer end is provided with end cap；
It is characterized in that：
The piston rod（4）Inside it is provided with axial cylindrical inner chamber（6）, in piston rod（4）The inner is provided with communication with cavity（6）With
Rod chamber（5）Oil-through-hole（4-1）；The inner chamber（6）Inside being provided with can the relative baffle plate slided（7）；The baffle plate（7）With work
Stopper rod（4）Sealing device is provided between inwall；
The cylinder barrel（3）Inside it is provided with one and cylinder barrel（3）The core pipe of axis parallel（2）；The core pipe（2）Through piston rod（4）,
And and baffle plate（7）It is fixedly connected, core pipe（2）The inner is fixed on cylinder barrel（3）Bottom；In cylinder barrel（3）Bottom is provided with connection core pipe（2）
With cylinder barrel（3）Extraneous passage（3-1）.
2. a kind of oil storage hydraulic cylinder according to claim 1, it is characterised in that：The core pipe（2）With baffle plate（7）Connection end
It is provided with step-like shelves platform, core pipe（2）With baffle plate（7）External screw thread, core pipe are provided with outside connection end（2）With baffle plate（7）Pacify connection end
Equipped with clamp nut；The baffle plate（7）Center is provided with through hole, in baffle plate（7）It is provided with through hole and core pipe（2）The platform that shelves platform coordinates
Scalariform seam；In the core pipe（2）With baffle plate（7）Sealing device is provided between through hole.
3. a kind of oil storage hydraulic cylinder according to claim 1, it is characterised in that：The piston rod（4）Including cylindrical tube shape
Cylinder（4-3）；In the cylinder（4-3）Outer end be fixed with outer end cap（4-4）, in cylinder（4-3）The inner be fixed with
End cap（4-2）；
The piston（8）Installed in inner end cap（4-2）Periphery on；In the inner end cap（4-2）It is also equipped with being used for piston
（8）The baffle ring of positioning（9）；The baffle ring（9）Inner end cap is arranged on threadably（4-2）Periphery on；
The inner end cap（4-2）It is close to cylinder（4-3）One end be provided with counterbore；The oil-through-hole（4-1）It is opened in inner end cap（4-
2）On the inwall of counterbore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710551941.8A CN107165887A (en) | 2017-07-07 | 2017-07-07 | A kind of oil storage hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710551941.8A CN107165887A (en) | 2017-07-07 | 2017-07-07 | A kind of oil storage hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107165887A true CN107165887A (en) | 2017-09-15 |
Family
ID=59823331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710551941.8A Pending CN107165887A (en) | 2017-07-07 | 2017-07-07 | A kind of oil storage hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107165887A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019396A (en) * | 2017-12-25 | 2018-05-11 | 株洲联诚集团减振器有限责任公司 | The hydraulic cylinder of non-welding structure |
| CN111022428A (en) * | 2019-11-25 | 2020-04-17 | 三一汽车起重机械有限公司 | An oil cylinder, a hydraulic oil cylinder system and a crane |
| CN112412924A (en) * | 2020-12-03 | 2021-02-26 | 成都锦江电子系统工程有限公司 | A New Type of Double-acting Hydraulic Cylinder |
| CN114135538A (en) * | 2021-11-30 | 2022-03-04 | 成都成缸液压设备制造有限公司 | Oil storage type variable amplitude oil cylinder |
| CN116696891A (en) * | 2022-02-28 | 2023-09-05 | 湖南特力液压有限公司 | hydraulic cylinder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011133007A (en) * | 2009-12-24 | 2011-07-07 | Ihi Construction Machinery Ltd | Fluid pressure cylinder |
| CN102788061A (en) * | 2012-08-30 | 2012-11-21 | 中国地质科学院勘探技术研究所 | Low-flow fast movable cylinder |
| CN203201899U (en) * | 2013-04-02 | 2013-09-18 | 山河智能装备股份有限公司 | Buffering hydraulic cylinder |
| CN203516270U (en) * | 2012-11-02 | 2014-04-02 | 胜利油田孚瑞特石油装备有限责任公司 | Four-cavity telescopic lifting master oil cylinder of energy storage workover rig |
| CN105114392A (en) * | 2015-09-25 | 2015-12-02 | 圣邦集团有限公司 | Oil cylinder, totally-closed hydraulic system with oil cylinders and control method |
| CN105402191A (en) * | 2015-12-02 | 2016-03-16 | 苏州三基铸造装备股份有限公司 | Internal differential adjustable type automatic deceleration oil cylinder |
| CN106523461A (en) * | 2016-12-06 | 2017-03-22 | 泸州长江液压密封件有限公司 | Movable hydraulic cylinder convenient to demount and rapid in movement |
| CN106640834A (en) * | 2016-12-30 | 2017-05-10 | 徐州重型机械有限公司 | Hydraulic cylinder, hydraulic system and crane |
-
2017
- 2017-07-07 CN CN201710551941.8A patent/CN107165887A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011133007A (en) * | 2009-12-24 | 2011-07-07 | Ihi Construction Machinery Ltd | Fluid pressure cylinder |
| CN102788061A (en) * | 2012-08-30 | 2012-11-21 | 中国地质科学院勘探技术研究所 | Low-flow fast movable cylinder |
| CN203516270U (en) * | 2012-11-02 | 2014-04-02 | 胜利油田孚瑞特石油装备有限责任公司 | Four-cavity telescopic lifting master oil cylinder of energy storage workover rig |
| CN203201899U (en) * | 2013-04-02 | 2013-09-18 | 山河智能装备股份有限公司 | Buffering hydraulic cylinder |
| CN105114392A (en) * | 2015-09-25 | 2015-12-02 | 圣邦集团有限公司 | Oil cylinder, totally-closed hydraulic system with oil cylinders and control method |
| CN105402191A (en) * | 2015-12-02 | 2016-03-16 | 苏州三基铸造装备股份有限公司 | Internal differential adjustable type automatic deceleration oil cylinder |
| CN106523461A (en) * | 2016-12-06 | 2017-03-22 | 泸州长江液压密封件有限公司 | Movable hydraulic cylinder convenient to demount and rapid in movement |
| CN106640834A (en) * | 2016-12-30 | 2017-05-10 | 徐州重型机械有限公司 | Hydraulic cylinder, hydraulic system and crane |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019396A (en) * | 2017-12-25 | 2018-05-11 | 株洲联诚集团减振器有限责任公司 | The hydraulic cylinder of non-welding structure |
| CN108019396B (en) * | 2017-12-25 | 2019-11-08 | 湖南联诚轨道装备有限公司 | The hydraulic cylinder of non-welding structure |
| CN111022428A (en) * | 2019-11-25 | 2020-04-17 | 三一汽车起重机械有限公司 | An oil cylinder, a hydraulic oil cylinder system and a crane |
| CN111022428B (en) * | 2019-11-25 | 2024-12-03 | 三一汽车起重机械有限公司 | Oil cylinder, hydraulic oil cylinder system and crane |
| CN112412924A (en) * | 2020-12-03 | 2021-02-26 | 成都锦江电子系统工程有限公司 | A New Type of Double-acting Hydraulic Cylinder |
| CN114135538A (en) * | 2021-11-30 | 2022-03-04 | 成都成缸液压设备制造有限公司 | Oil storage type variable amplitude oil cylinder |
| CN116696891A (en) * | 2022-02-28 | 2023-09-05 | 湖南特力液压有限公司 | hydraulic cylinder |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170915 |