CN109268322A - Energy-storage hydraulic device - Google Patents
Energy-storage hydraulic device Download PDFInfo
- Publication number
- CN109268322A CN109268322A CN201811347980.7A CN201811347980A CN109268322A CN 109268322 A CN109268322 A CN 109268322A CN 201811347980 A CN201811347980 A CN 201811347980A CN 109268322 A CN109268322 A CN 109268322A
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- Prior art keywords
- gas
- piston
- energy
- chamber
- hydraulic device
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- 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.)
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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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- 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
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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 invention discloses a kind of energy-storage hydraulic devices, the energy-storage hydraulic device includes the oil liquid piston (3) that the intracorporal space of cylinder is divided into rodless cavity (B) and rod chamber (C) of the end setting of cylinder body (1), the piston rod (2) that can be stretched in cylinder body and piston rod (2), and the pouring orifice (11) for the injection oil liquid into rodless cavity (B) is provided on cylinder body；Wherein, gas chamber (22) is provided in piston rod (2) and for the gas injection port (21) to gas chamber (22) gas injection, gas chamber (22) includes the axial hole (222) being arranged in piston rod, the gas piston (4) that can be moved axially along axial hole (222) is provided in gas chamber (22), the side space towards rodless cavity (B) positioned at gas piston (4) of axial hole (222) is connected to setting with rodless cavity (B).Energy-storage hydraulic device provided by the invention, without in addition configuration power source, and space structure is compact, at low cost.
Description
Technical field
The present invention relates to technical field of hydraulic pressure, and in particular, to a kind of energy-storage hydraulic device.
Background technique
Hydraulic cylinder is common engineering mechanical components, is made of cylinder barrel and the piston rod in cylinder barrel and piston.
In the prior art, with the hydraulic cylinder of accumulator, accumulator is usually arranged in the outside of hydraulic cylinder, such as patent
" hydraulic cylinder with accumulator " disclosed in CN201843849U, accumulator therein is fixed on cylinder barrel outer wall by bracket,
The hydraulic fluid port and cylinder oil port of accumulator pass through pipeline connection.
But the existing hydraulic cylinder with accumulator has the drawback that
1, accumulator is placed outside outside hydraulic cylinder, it is desirable that installation space is larger；
2, coupled by valve block to relevant valve and accumulator, related valves is needed to control pressure；
3, cylinder action needs power source drive.
Summary of the invention
The purpose of the invention is to overcome occupied space present in the hydraulic cylinder with accumulator in the prior art it is big,
Need valve to pressure carry out control and oil cylinder need power source the defects of.
To achieve the goals above, one aspect of the present invention provides a kind of energy-storage hydraulic device, the energy-storage hydraulic device packet
Include the end setting of cylinder body, the piston rod that can be stretched in the cylinder body and the piston rod by the intracorporal sky of the cylinder
Between be divided into the oil liquid piston of rodless cavity and rod chamber, be provided on the cylinder body for injecting oil liquid into the rodless cavity
Pouring orifice；
Wherein, gas chamber is provided in the piston rod and for the gas injection port to gas chamber's gas injection, institute
Stating gas chamber includes the axial hole being arranged in the piston rod, and being provided in the gas chamber can be along the axial hole axle
To mobile gas piston, the side space towards the rodless cavity for being located at the gas piston of the axial hole with it is described
Rodless cavity connection setting.
Preferably, the axial hole extends to the end with the oil liquid piston of the piston rod, and the oil liquid is living
It is provided with centre bore beyond the Great Wall, the rodless cavity is connected to the axial hole by the centre bore.
Preferably, the intercommunicating pore for being connected to the rodless cavity with the rod chamber is provided on the oil liquid piston.
Preferably, the opening being connected to the rod chamber is provided on the cylinder body；
Pressure gauge for detecting pressure in the rod chamber is installed in the opening.
Preferably, the gas piston is provided in the gas chamber to be used for when compressing the air chamber indoor gas
Limit the stopper section of the gas piston shift position.
Preferably, the gas chamber further includes the tool being arranged in one end far from the oil liquid piston of the axial hole
There is the gas injection chamber of the gas injection port, is provided with stage portion between the gas injection chamber and the axial hole；
The stopper section is the stage portion；Alternatively, the stopper section in the axial hole and is supported in institute for setting
State the stop collar in stage portion.
Preferably, the side towards the gas injection port of the gas piston is provided with blind hole.
Preferably, be provided on the outer surface of the piston rod can piston rod sliding relatively spacer.
Preferably, the energy-storage hydraulic device further include be fixed on the cylinder body for the movement of the piston rod into
The guide sleeve of row guiding.
Preferably, the sealing ring around the piston rod is provided between the guide sleeve and the piston rod；
And/or the sealing ring around the oil liquid piston is provided between the cylinder body and the oil liquid piston；And/or
It is provided between the inner surface of the axial hole of the piston rod and the gas piston around the gas piston
Sealing ring.
Energy-storage hydraulic device provided by the invention, has the characteristics that hydraulic cylinder and accumulator, without in addition configuring power source,
The energy stored using the indoor compressed gas of air chamber drives hydraulic device to execute movement as power source.In addition, this
The energy-storage hydraulic device provided is provided, will the accumulator structure of accumulation of energy be built in hydraulic cylinder structure, relative to existing
For hydraulic cylinder adds the components such as accumulator and control valve, it may make that space structure is more compact, cost reduces.
Detailed description of the invention
Fig. 1 is to be in the structural representation that inflation finishes state according to energy-storage hydraulic device in an embodiment of the invention
Figure；
Fig. 2 is enlarged drawing at A in Fig. 1；
Fig. 3 is in the structural schematic diagram of an equilibrium state for the oil liquid in energy-storage hydraulic device with gas；
Fig. 4 is compressed into the structural schematic diagram of limiting condition for the piston in energy-storage hydraulic device；
Fig. 5 is the structural schematic diagram according to the energy-storage hydraulic device in another embodiment of the present invention.
Description of symbols
1- cylinder body；11- pouring orifice；12- opening；2- piston rod；21- gas injection port；22- gas chamber；221- gas injection chamber；
222- axial hole；23- stage portion；24- tubular body；The head 25-；3- oil liquid piston；31- centre bore；32- intercommunicating pore；33- second
Annular groove；4- gas piston；41- blind hole；42- third annular groove；5- spacer；6- guide sleeve；The first annular slot of 61-；7- limit
Ring.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can
To be combined with each other.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
The instruction such as " thickness ", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", " axial direction ", " radial direction ", " circumferential direction "
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.In addition, " inside and outside " refers to the inside and outside of the profile relative to each component itself.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.
The present invention provides a kind of energy-storage hydraulic device, as shown in figures 1 and 3, the energy-storage hydraulic device include cylinder body 1,
The end setting of the piston rod 2 and the piston rod 2 that can stretch in the cylinder body 1 by the space in the cylinder body 1
It is divided into the oil liquid piston 3 of rodless cavity B and rod chamber C, is provided on the cylinder body 1 for injecting oil into the rodless cavity B
The pouring orifice 11 of liquid.
Wherein, gas chamber 22 is provided in the piston rod 2 and for the gas injection to 22 gas injection of gas chamber
Mouth 21, the gas chamber 22 include the axial hole 222 being arranged in the piston rod 2, are provided with energy in the gas chamber 22
Enough gas pistons 4 move axially along the axial hole 222, the axial hole 222 positioned at the gas piston 4 towards institute
The side space for stating rodless cavity B is connected to setting with the rodless cavity B.
Energy-storage hydraulic device provided by the invention injects gas into gas chamber 22 by gas injection port 21 before application
(such as nitrogen), gas push gas piston 4 is moved along axial direction to the direction far from gas injection port 21 in axial hole 222, in gas
After body is full of, gas injection port 21 is closed.At this point, the hydraulic cylinder reaches state as shown in Figure 1, the cavity shape in 4 left side of gas piston
At the closed cavity with gas.Then oil liquid is injected into the rodless cavity B of cylinder body 1 from pouring orifice 11, not with oil liquid
Disconnected injection, oil liquid pressure constantly increase, and push oil liquid piston 3 mobile (being moved to the left in such as Fig. 3) towards the direction of rod chamber C,
The volume of rodless cavity B constantly increases.Due to the side space towards the rodless cavity B positioned at gas piston 4 of axial hole 222
It is connected to rodless cavity B, when the pressure of oil liquid is higher than the initial pressure of gas chamber 22, it is mobile that oil liquid will push gas piston 4
(gas piston 4 in Fig. 3 is moved to the left a distance in axial hole 222 again), the gas in gas chamber 22 are compressed, gas
Body pressure rise, when pressure rise is to setting value, the stress of 4 left and right sides of gas piston reaches balance, closes oil liquid institute at this time
Chamber.
In the application energy-storage hydraulic device, under the action of load, piston rod 2 is under pressure retraction, at this point, rodless cavity
The volume of B is reduced, and the oil liquid being inside extruded will push the movement of gas piston 4 and enter in axial hole 222, thus compressed gas
Gas in fluid chamber 22, gas pressure increases, while the pressure rise of hydraulic oil.When the pressure of hydraulic oil reaches negative with the external world
When the applied power of load is consistent, the two reaches equilibrium state.Applied energy is loaded to be stored by compressed gas.Work as load
When reduction, the thrust of piston rod 2, which is greater than, loads applied power, and piston rod 2 is protruding, and the volume of rodless cavity B increases at this time,
Pressure reduction.Gas expansion in gas chamber 22 pushes gas piston 4 to move right, the hydraulic oil quilt on 4 right side of gas piston
It is pushed into rodless cavity B, a kind of new balance is established again at this time, so far completes a cycle period.
In completing an action cycle, the energy by loading itself is retracted piston rod 2, so that gas piston 4 is pressed
Contracting gas completes accumulation of energy movement.When loading reduction, expansion of compressed gas pushes the movement of gas piston 4 and piston rod 2 to stretch
Out, the release of energy is completed.
Energy-storage hydraulic device provided by the invention, has the characteristics that hydraulic cylinder and accumulator, without in addition configuring power source,
The energy stored using the compressed gas in air chamber 22 drives hydraulic device to execute movement as power source.In addition,
Energy-storage hydraulic device provided by the invention, will the accumulator structure of accumulation of energy be built in hydraulic cylinder structure, relative to existing
Hydraulic cylinder add the components such as accumulator and control valve for, may make that space structure is more compact, cost reduce.
In a preferred embodiment of the present invention, as depicted in figs. 1 and 2, the axial hole 222 in piston rod 2 extends
To the end with the oil liquid piston 3 of the piston rod 2, centre bore 31, the no bar are provided on the oil liquid piston 3
Chamber B is connected to the axial hole 222 by the centre bore 31.Oil liquid in rodless cavity B pushes gas living from the centre bore 31
It fills in 4 and enters in axial hole 222.
In present embodiment, it is preferable that be additionally provided on oil liquid piston 3 and be connected to the rodless cavity B with the rod chamber C
Intercommunicating pore 32, so that rodless cavity B is connected to the chamber to form an entirety with rod chamber C, after injecting oil liquid from pouring orifice 11,
Oil liquid in rodless cavity B can be entered in rod chamber C by intercommunicating pore 32, and the stroke of piston rod 2 can be made to increase.Piston
When bar 2 moves, the oil liquid in rodless cavity B and rod chamber C increases or reduces with the movement of piston.Specifically stretched out in piston rod 2
When, rod chamber C volume is reduced, and rodless cavity B volume increases, the gas expansion in gas chamber 22；And when the retraction of piston rod 2, have
Rod cavity C volume increases, and rodless cavity B volume is reduced, and the gas in gas chamber 22 is compressed.That is, being transported using piston rod 2
The volume differences that rod chamber C and rodless cavity B is generated when dynamic carry out the volume having more when compressed gas or balanced gas expansion.
The opening 12 being connected to the rod chamber C is provided on the cylinder body 1.The opening 12 can be used as oil liquid and inject
Pouring orifice 11 and the opening 12 are all closed by the exhaust outlet in journey after oil liquid injection.
Pressure gauge for detecting pressure in the rod chamber C can also be installed in the opening 12, it can by pressure gauge
To detect the pressure of rod chamber C inner fluid.As needed, can set gas in gas chamber 22 and 1 inner fluid of cylinder body it
Between the balance of being reached pressure, in oil liquid injection process, which detects oil liquid pressure achieved, the pressure with
Compressed gas reaches balance, then stops oiling.
In present embodiment, it is preferable that the side towards gas injection port 21 of the gas piston 4 is provided with blind hole 41.This
Sample, can be in favor of gas chamber's volume of increase 4 side of gas piston.
In present embodiment, it is preferable that be provided with the gas piston 4 in the gas chamber 22 and compressing the gas
For limiting the stopper section of 4 shift position of gas piston when gas in chamber 22.
Specifically, the gas chamber 22 further includes setting in one end far from the oil liquid piston 3 of the axial hole 222
The gas injection chamber 221 with the gas injection port 21 set, is provided with stage portion between the gas injection chamber 221 and the axial hole 222
23.Further, piston rod 2 may include specifically the tubular body 24 with axial hole 222 and 25 structure of head with gas injection chamber 221
At, for convenience of manufacturing, head 25 and tubular body 24 can separately manufacturing, then together by welding assembly.Head and tubulose
The side that body 24 connects forms the stage portion 23.In present embodiment, limits the described of 4 shift position of gas piston and stop
Stopper is stage portion 23.As shown in figure 4, gas piston 3 is supported when being compressed to ultimate attainment by oil liquid in stage portion 23, gas cannot
Further compress.
As needed, the stop collar 7 supported in stage portion 23 can also be set in axial hole 222, utilize the limit
Stopper section of the ring 7 as limitation 4 shift position of gas piston, it is possible to reduce the stroke of gas piston 3.Limit is shown in Fig. 5
Ring 7.
In present embodiment, the stroke of piston rod 2 can be also limited as needed.As shown in Figure 1, in the outer of piston rod 2
Being provided on surface can the spacer 5 that slides of the piston rod 2 relatively.The spacer 5 on supporting the structure inside cylinder body 1 (
This is supported on the guide sleeve 6 of piston rod 2) when, the shift position of oil liquid piston 3 can be limited, oil liquid piston 3 is moved to top
When on spacer 5, piston rod 2 cannot be continued to move to.
In addition, in present embodiment, to enable piston rod 2 steadily to move in cylinder body 1, the energy-storage hydraulic device
It further include the guide sleeve 6 for being fixed on cylinder body 1 for being oriented to the movement of the piston rod 2.The guide sleeve 6 can pass through spiral shell
It tethers and connects or other connection types are fixed on cylinder body 1.
For the sealing for realizing the energy-storage hydraulic device, avoid gas leakage between all parts, leakage, the guide sleeve 6 with
The sealing ring around the piston rod 2 is provided between the piston rod 2；It is provided between cylinder body 1 and oil liquid piston 3 around institute
State the sealing ring of oil liquid piston 3；And it is arranged between the inner surface and the gas piston 4 of the axial hole 222 of piston rod 2 and surrounds
The sealing ring of gas piston 4.
Specifically, as depicted in figs. 1 and 2, multiple first annular slots 61 can be arranged on the inner surface of guide sleeve 6, often
Setting surrounds the sealing ring of piston rod 2 in a first annular slot 61, to guarantee the sealing between guide sleeve 6 and piston rod 2.Oil liquid
Multiple second annular grooves 33 are set on the outer surface of piston 3, and setting surrounds the sealing of oil liquid piston 3 in second annular groove 33
Circle；Multiple third annular grooves 42 are set on the outer surface of gas piston 4, and setting surrounds gas piston in the third annular groove 42
4 sealing ring.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited thereto.At this
, can be with various simple variants of the technical solution of the present invention are made in the range of the technology design of invention, including each particular technique
Feature is combined in any suitable manner.In order to avoid unnecessary repetition, the present invention is to various combinations of possible ways
No further explanation will be given.But it should also be regarded as the disclosure of the present invention for these simple variants and combination, belongs to the present invention
Protection scope.
Claims (10)
1. a kind of energy-storage hydraulic device, which is characterized in that the energy-storage hydraulic device includes cylinder body (1), in the cylinder body (1)
Space in the cylinder body (1) is divided into nothing by the end setting of the piston rod (2) and the piston rod (2) that can stretch
The oil liquid piston (3) of rod cavity (B) and rod chamber (C) is provided on the cylinder body (1) for the injection into the rodless cavity (B)
The pouring orifice (11) of oil liquid；
Wherein, gas chamber (22) is provided in the piston rod (2) and for the note to the gas chamber (22) gas injection
Port (21), the gas chamber (22) include the axial hole (222) being arranged in the piston rod (2), the gas chamber
(22) gas piston (4) that can be moved axially along the axial hole (222) is provided in, axial hole (222) are located at
The side space towards the rodless cavity (B) of the gas piston (4) is connected to setting with the rodless cavity (B).
2. energy-storage hydraulic device according to claim 1, which is characterized in that the axial hole (222) extends to the work
The end with the oil liquid piston (3) of stopper rod (2) is provided with centre bore (31) on the oil liquid piston (3), the no bar
Chamber (B) is connected to the axial hole (222) by the centre bore (31).
3. energy-storage hydraulic device according to claim 1, which is characterized in that be provided on the oil liquid piston (3) by institute
State the intercommunicating pore (32) that rodless cavity (B) is connected to the rod chamber (C).
4. energy-storage hydraulic device according to claim 1, which is characterized in that being provided on the cylinder body (1) has with described
The opening (12) of rod cavity (C) connection；
Pressure gauge for detecting the rod chamber (C) interior pressure is installed on the opening (12).
5. energy-storage hydraulic device according to claim 1, which is characterized in that be provided in the gas chamber (22) described
Gas piston (4) is when compressing the interior gas of the gas chamber (22) for limiting stopping for the gas piston (4) shift position
Stopper.
6. energy-storage hydraulic device according to claim 5, which is characterized in that the gas chamber further includes in the axial direction
The gas injection chamber (221) with the gas injection port (21) that the one end far from the oil liquid piston (3) in hole (222) is arranged, it is described
Stage portion (23) are provided between gas injection chamber (221) and the axial hole (222)；
The stopper section is the stage portion (23)；Alternatively, the stopper section is setting in the axial hole (222) and supports
Stop collar (7) on the stage portion (23).
7. energy-storage hydraulic device according to claim 1, which is characterized in that the gas piston (4) towards the note
The side of port (21) is provided with blind hole (41).
8. energy-storage hydraulic device according to claim 1, which is characterized in that be arranged on the outer surface of the piston rod (2)
Have can the piston rod (2) sliding relatively spacer (5).
9. energy-storage hydraulic device described in any one of -8 according to claim 1, which is characterized in that the energy-storage hydraulic device
It further include the guide sleeve (6) for being oriented to the movement of the piston rod (2) for being fixed on the cylinder body (1).
10. energy-storage hydraulic device according to claim 9, which is characterized in that the guide sleeve (6) and the piston rod
(2) sealing ring around the piston rod (2) is provided between；
And/or the sealing ring around the oil liquid piston (3) is provided between the cylinder body (1) and the oil liquid piston (3)；
And/or
It is provided between the inner surface and the gas piston (4) of the axial hole (222) of the piston rod (2) around the gas
The sealing ring of piston (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811347980.7A CN109268322A (en) | 2018-11-13 | 2018-11-13 | Energy-storage hydraulic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811347980.7A CN109268322A (en) | 2018-11-13 | 2018-11-13 | Energy-storage hydraulic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109268322A true CN109268322A (en) | 2019-01-25 |
Family
ID=65192722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811347980.7A Pending CN109268322A (en) | 2018-11-13 | 2018-11-13 | Energy-storage hydraulic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109268322A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578733A (en) * | 2019-09-10 | 2019-12-17 | 长沙理工大学 | Energy storage type hydraulic cylinder with built-in piston rod |
| CN114718685A (en) * | 2022-06-08 | 2022-07-08 | 西安热工研究院有限公司 | Distributed constant-high-gravity compressed air energy storage system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201166022Y (en) * | 2008-02-27 | 2008-12-17 | 长沙中联重工科技发展股份有限公司 | Hydraulic pressure accumulator oil cylinder for crane |
| CN201382116Y (en) * | 2009-02-24 | 2010-01-13 | 郭孔辉 | Rod power accumulator type oil-gas spring |
| CN106134403B (en) * | 2010-12-16 | 2014-02-26 | 内蒙古第一机械集团有限公司 | A kind of controllable damping hydro-pneumatic spring |
| CN204140745U (en) * | 2014-09-15 | 2015-02-04 | 陕西中航气弹簧有限责任公司 | Semitrailer crusherbull zone hydro-pneumatic spring |
-
2018
- 2018-11-13 CN CN201811347980.7A patent/CN109268322A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201166022Y (en) * | 2008-02-27 | 2008-12-17 | 长沙中联重工科技发展股份有限公司 | Hydraulic pressure accumulator oil cylinder for crane |
| CN201382116Y (en) * | 2009-02-24 | 2010-01-13 | 郭孔辉 | Rod power accumulator type oil-gas spring |
| CN106134403B (en) * | 2010-12-16 | 2014-02-26 | 内蒙古第一机械集团有限公司 | A kind of controllable damping hydro-pneumatic spring |
| CN204140745U (en) * | 2014-09-15 | 2015-02-04 | 陕西中航气弹簧有限责任公司 | Semitrailer crusherbull zone hydro-pneumatic spring |
Non-Patent Citations (2)
| Title |
|---|
| 成大先: "《机械设计图册 第5卷》", 31 March 2000 * |
| 李兵等: "《液压与气压传动》", 31 January 2016 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578733A (en) * | 2019-09-10 | 2019-12-17 | 长沙理工大学 | Energy storage type hydraulic cylinder with built-in piston rod |
| CN110578733B (en) * | 2019-09-10 | 2020-11-27 | 长沙理工大学 | Energy storage type hydraulic cylinder with built-in piston rod |
| CN114718685A (en) * | 2022-06-08 | 2022-07-08 | 西安热工研究院有限公司 | Distributed constant-high-gravity compressed air energy storage system |
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Application publication date: 20190125 |
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