CN108839777A - A kind of sealing device of underwater robot drive system variable stiffness apparatus - Google Patents
A kind of sealing device of underwater robot drive system variable stiffness apparatus Download PDFInfo
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- CN108839777A CN108839777A CN201810510965.3A CN201810510965A CN108839777A CN 108839777 A CN108839777 A CN 108839777A CN 201810510965 A CN201810510965 A CN 201810510965A CN 108839777 A CN108839777 A CN 108839777A
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- chamber
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- steel disc
- half steel
- sealing ring
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/52—Tools specially adapted for working underwater, not otherwise provided for
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The present invention provides a kind of sealing device of underwater robot drive system variable stiffness apparatus, including piston, piston hole, sealing mechanism and rubber tube component.Sealing mechanism includes pressurizing pack and seal assembly two parts.Pressurizing pack includes hydraulic fitting, connecting tube, steel body end cap, small piston, cylinder seal, cylinder body, mounting flange, hexagon socket head cap screw；Seal assembly includes left half steel disc, right half steel disc, I-shaped sealing ring, elastic rubber strip.Rubber tube component includes interior steel bushing, outer steel sleeve, rubber tube.The invention utilizes piston side-to-side movement and hydraulic differential principle, pass through the variation of cylinder body inner gel pressure difference, small piston is set to move downward or move upwards, it pushes left half steel disc and right half steel disc compresses I-shaped sealing ring or I-shaped sealing ring is in nature impaction state, to enhance the circle sealing effect of I-shaped sealing, avoids I-shaped sealing ring and be in external force impaction state for a long time and fail.
Description
Technical field
The present invention relates to underwater equipment sealing technique more particularly to a kind of underwater robot drive system variable stiffness apparatus
Sealing device.
Background technique
As the development and the progress of science and technology, the mankind of society obtain great progress in terms of ocean engineering.As
One important detection system of ocean engineering, underwater robot have the characteristics that small in size, light-weight, noise is low, good concealment,
Important function has been played in the maintenance of marine surveys, deep ocean work, marine resources development and maritime rights and interests.To underwater operation
For robot, the sealing of equipment is the key technology of robot, while being also that robot works normally most basic guarantee.Specially
Application No. is CN201710284606.6 for benefit, entitled《A kind of imitative fish underwater robot tail drive system variable stiffness apparatus》
Patent propose a kind of imitative fish underwater robot tail drive system variable stiffness apparatus, by the thrust of piston toward rubber tube
Middle indentation gel realizes tail portion variation rigidity.The threaded connection place of the device piston shell and interior steel bushing and not set any sealing element
Or sealing device easily causes the leakage of gel and the damage of screw thread under the action of piston thrust, to make piston shell and interior steel
The problems such as threaded connection of set is failed, and the stiffness variation of device cannot achieve and entire underwater robot can not work normally.
Therefore for these problems of solution, guarantee that underwater robot drive system variable stiffness apparatus can work normally, it is necessary to design one
The constructional device that kind effectively can reliably seal underwater robot drive system variable stiffness apparatus.
Summary of the invention
The shortcomings that the purpose of the invention is to overcome the prior art and insufficient and a kind of underwater robot driving system is provided
The sealing device of system variable stiffness apparatus, structure is simple and convenient to operate, is practical, strong innovation, sealing effect is good, uses
Period is long, it is easy to accomplish and control.
The object of the present invention is achieved like this：Including piston, piston shell, sealing mechanism, rubber tube component, the piston
It is arranged in one end of piston shell；The rubber tube component include the interior steel bushing being arranged in the other end of piston shell, setting exist
It interior steel bushing outer end outer steel sleeve, the rubber tube that is connected to outer steel sleeve end；The sealing mechanism includes pressurizing pack and sealing group
Part, pressurizing pack include the hydraulic fitting being arranged in piston shell, the mounting flange being arranged in piston shell, are arranged in fixation
Cylinder body on flange, the cylinder end caps that cylinder body upper end is arranged in, setting connect in the intracorporal small piston of cylinder, connection cylinder body and hydraulic cylinder
The connecting tube of head, seal assembly include the I-shaped sealing ring being arranged between interior steel bushing and piston shell, left half steel disc, right half steel
Piece and elastic rubber strip, in interior liner backs, the elastic rubber strip is arranged in left half steel for the I-shaped sealing ring setting
Between piece and right half steel disc, the ring structure that half steel disc, right half steel disc and elastic rubber strip are formed is arranged in I-shaped sealing ring
Between piston shell, and wedge gap is formed between the end of left half steel disc and the end of right half steel disc, under the small piston
End is the tapered end cooperated with wedge gap.
The invention also includes structure features some in this way：
1. being provided with sealing element between piston and piston shell.
2. being provided with a chamber, b chamber and c chamber in the cylinder body, cylinder body is entered laterally from connecting tube and is divided into b to small piston top
Chamber, the vertical chamber on the small piston left side are a chamber, and a chamber and b chamber intersect perforation, are partially c chamber below small piston.
3. pushing the gel in fluid chamber along hydraulic fitting when piston moves right under the action of external engine
Enter cylinder body with connecting tube, as piston constantly moves right, b chamber and c chamber are increasing to the pressure of small piston, due to contact
The difference of area cause b chamber pressure amplification be greater than c chamber, small piston the gel pressure of b chamber and c chamber difference under the action of gradually to
Lower movement, after the tapered end of small piston, which enters left half steel disc, combines the wedge gap to be formed with right half steel disc, small piston is applied
One extruding force of left half steel disc and right half steel disc is added to, makes left half steel disc and right half steel disc while elasticity of compression rubber strip,
It is applied to one pressing force of I-shaped sealing ring, I-shaped sealing ring is made to compress interior steel bushing；
When piston moves downward under the action of engine, in cylinder body b chamber and c chamber to the pressure of small piston increasingly
Small, since the difference of contact area causes the pressure amount of decrease of b chamber to be greater than c chamber, then small piston is poor in b chamber and c chamber gel pressure
Under the action of gradually move upwards, the restoring force of elastic rubber strip pushes left half steel disc and right half steel disc to be restored to original position, together
When, left half steel disc and right half steel disc disappear to the pressing force of I-shaped sealing ring, and I-shaped sealing ring restores nature sealing state.
Compared with prior art, the beneficial effects of the invention are as follows：(1) structure be simple and convenient to operate, sealing effect it is good, easily
In installation and replacement；(2) I-shaped sealing ring, left half steel disc, right half steel disc and the small piston tapered end that the present invention designs,
It is structurally reasonable and there is novelty, cleverly utilize I-shaped sealing ring, left half steel disc, right half steel disc and small piston tapered end
The architectural characteristic in portion realizes the purpose for enhancing I-shaped sealing ring sealing effect；(3) the invention is right using piston
The thrust and hydraulic differential principle to gel in hydraulic cavities are moved, small piston is moved downward, pushes left half steel disc and right half steel
Piece squeezes I-shaped sealing ring, to enhance the sealing effect of I-shaped sealing ring.Meanwhile when piston moves downward, cylinder body pair
The pressure of small piston reduces, and small piston moves upwards, and left half steel disc and right half steel disc are made in the elastic restoring force of elastic rubber strip
Original position is returned under, pressing force is not being applied to I-shaped sealing ring, I-shaped sealing ring is made to be in nature sealing state, from
And the sealing effect of I-shaped sealing ring is not only enhanced in the right movement of piston, but also make I-shaped sealing ring in piston left movement
In nature sealing state, avoids I-shaped sealing ring and be in external force impaction state for a long time and fail.In addition, this interval
Property I-shaped sealing ring the state that sealing is sealed naturally with I-shaped sealing ring is compressed by external force, improve I-shaped sealing ring
Service life and entire sealing device service life.
Detailed description of the invention
Fig. 1 is whole three-dimensional figure of the invention；
Fig. 2 is structural schematic diagram of the invention；
Fig. 3 is the structural schematic diagram of cylinder body 9；
Fig. 4 is A-A sectional view of the invention.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing.
In conjunction with Fig. 1 to Fig. 4, the present invention is mainly by piston 1, piston shell 3, sealing mechanism and rubber tube component composition.It is whole
The structure diagram of a device is as shown in Fig. 2, wherein sealing mechanism includes pressurizing pack and seal assembly two parts.Pressurizing pack packet
Include hydraulic fitting 4, connecting tube 5, cylinder end caps 6, small piston 7, cylinder seal 8, cylinder body 9, mounting flange 10, interior hexagonal spiral shell
Bolt 11；Seal assembly includes left half steel disc 15, right half steel disc 16, I-shaped sealing ring 17, elastic rubber strip 18；Rubber tube component
Including interior steel bushing 12, outer steel sleeve 13, rubber tube 14.Cavity between the piston, piston shell and interior steel bushing is hydraulic cavities, hydraulic
It is intracavitary filled with gel.The effect of the hydraulic fitting is connection piston shell and connecting tube, convenient for making gel in piston thrust
Effect is lower to enter cylinder body.The cylinder body is bolted on mounting flange, and mounting flange is further through Allen bolt
It is fixed in piston shell.There are cylinder end caps above the cylinder body, main function is the spilling for preventing gel.
The shape size of piston 1 of the invention need to cooperate with piston shell 3, and sealing element 2 is housed on piston 1, mainly be
Prevent piston 1 from leaking when piston leads to and moves in 3.The piston left end is connect with engine, in the effect of engine
Under move reciprocatingly.
Hydraulic fitting 4 of the invention, which mainly plays connection function, makes piston 1 for piston shell 3 to be connected to connecting tube 5
When right movement, gel is pushed to flow into cylinder body 9, the 9 useful hexagon socket head cap screw in top of cylinder body fixed cylinder body end under the action of thrust
Lid 6, shape and the inner chamber of cylinder block shape of cylinder end caps 6 are agreed with, and prevent gel from overflowing above cylinder body 9.
Cylinder body 9 of the invention is bolted on mounting flange 10, and mounting flange is further through hexagon socket head cap screw 11
It is fixed in piston shell 3.
Cylinder body 9 of the invention devises altogether a, tri- chambers of b, c, structural schematic diagram such as Fig. 3 according to hydraulic differential principle
It is shown.Cylinder body 9 is entered laterally from connecting tube 5 and is divided into b chamber to 7 top of small piston, and the vertical chamber on 7 left side of small piston is a chamber, and a
Chamber and b chamber intersect perforation, are partially c chamber below small piston.Pressure change process in cylinder body 9 is as follows：When piston 1 outside
When moving right under the action of portion's engine, piston 1 pushes gel to progress into a of cylinder body 9 along connecting tube 5, b, c chamber, with
Piston 1 constantly move right, b chamber and c chamber are increasing to the pressure of small piston 7, since the difference of contact area leads to b chamber
Pressure amplification be greater than c chamber, then small piston 7 moves gradually downward under the action of b chamber and poor c chamber gel pressure.When piston 1
When moving downward, b chamber and c chamber are gradually reduced the pressure of small piston 7, and the pressure amount of decrease of b chamber is greater than c chamber, then small piston 7
It is gradually moved upwards under the action of b chamber and poor c chamber gel pressure, meanwhile, half steel disc 15 of a left side and right half steel disc 16 are in elastic rubber
Under the elastic restoring force effect of adhesive tape 18, a upward thrust will be generated to small piston 7, when this thrust will accelerate small work
Plug 7 moves upwards.
I-shaped sealing ring 17 of the invention installs (set) on interior steel bushing 12, and the left side of I-shaped sealing ring 17 is left half
Steel disc 15, the right are right half steel discs 16, are elastic rubber strip 18 below, and the shape size of a left side half steel disc 15 and right half steel disc 16
Identical, only position is placed different, and left half steel disc 15 combines with right half steel disc 16 and places I-shaped 17 both sides of sealing ring, will
It can be partially formed a wedge gap in I-shaped sealing ring 17, as shown in Figure 4.When small piston 7 is in 9 inner gel pressure of cylinder body
When moving downward under the action of difference, the tapered end of small piston 7 will be inserted into left half steel disc 15 and combine formation with right half steel disc 16
In wedge gap, as small piston 7 constantly moves downward, it will generate one with right half steel disc 16 to left half steel disc 15 and push away
Power makes half steel disc 15 of a left side squeeze I-shaped sealing ring 17 while elasticity of compression rubber strip 18 with right half steel disc 16, to increase
The sealing effect of strong I-shaped sealing ring 17.Conversely, when small piston 7 moves upwards under the action of 9 inner gel pressure difference of cylinder body
When, the restoring force of elastic rubber strip pushes half steel disc 15 of a left side and right half steel disc 16 is returned to original position, half steel disc 15 of a left side and right half
Steel disc 16 disappears to the pressing force of I-shaped sealing ring 17, and I-shaped sealing ring 17 restores nature sealing state, avoids I-shaped
17 long-time of type sealing ring is in external force impaction state.This intermittent I-shaped sealing ring compresses sealing and I-shaped by external force
The state that type sealing ring seals naturally had not only enhanced the sealing effect of I-shaped sealing ring, but also improved I-shaped sealing ring
The service life of service life and entire sealing device.
The working principle of the invention is：Piston of the invention moves right under the action of external engine, makes hydraulic cavities
In thrust increase, push the gel in hydraulic cavities to enter a of cylinder body, b, c chamber, cylinder body benefit along hydraulic fitting and connecting tube
Increase the pressure in cylinder body with hydraulic differential principle, specifically：As piston constantly moves right, b chamber and c chamber are to small piston
Pressure it is increasing, due to the difference of contact area cause b chamber pressure amplification be greater than c chamber, then small piston is in b chamber and c
It is moved gradually downward under the action of chamber gel pressure difference；Under the promotion of piston, into cylinder body gel push small piston to
Lower movement, when the tapered end of small piston enters the wedge gap between left half steel disc and right half steel disc, small piston will be to a left side
One extruding force of half steel disc and right half steel disc makes left half steel disc and right half steel disc while elasticity of compression rubber strip, gives I-shaped
One pressing force of type sealing ring makes I-shaped sealing ring compress interior steel bushing, enhances the sealing effect of I-shaped sealing ring, prevent liquid
Press the leakage of intracavity liquid.When piston moves downward, the pressure of small piston is gradually reduced in cylinder body, small piston is transported upwards
Dynamic, detailed process is：B chamber and c chamber are gradually reduced the pressure of small piston, and the pressure amount of decrease of b chamber is greater than c chamber, then small work
Plug gradually moves upwards under the action of b chamber and poor c chamber gel pressure；Compressed elastic rubber strip generates elastic force and makes before
Left half steel disc and right half steel disc are restored to original position, and I-shaped sealing ring is not located by the pressure of left half steel disc and right half steel disc
In natural impaction state.
To sum up, the present invention relates to a kind of sealing devices of underwater robot drive system variable stiffness apparatus.It mainly includes
Piston 1, piston shell 3, hydraulic packing mechanism and rubber tube component.Wherein hydraulic packing mechanism includes pressurizing pack and sealing group
Part two parts.Pressurizing pack includes hydraulic fitting 4, connecting tube 5, cylinder end caps 6, small piston 7, cylinder seal 8, cylinder body 9,
Mounting flange 10, hexagon socket head cap screw 11；Seal assembly includes left half steel disc 15, right half steel disc 16, I-shaped sealing ring 17, elasticity
Rubber strip 18.Rubber tube component includes interior steel bushing 12, outer steel sleeve 13, rubber tube 14.Cylinder body 9 is fixed on work by mounting flange 10
It fills on shell 3.Interior steel bushing 12 is connected through a screw thread with piston shell 3, and outer steel sleeve 13 and interior steel bushing 12 are also by being threaded togather.
Piston 1 moves right under the action of external engine, increases the thrust in hydraulic cavities, push fluid chamber in gel along
Hydraulic fitting 4 and connecting tube 5 enter cylinder body 9, and cylinder body 9 makes the inner pressure change of cylinder body 9 using differential principle, not with piston 1
Disconnected to move right, b chamber and c chamber are increasing to the pressure of small piston 7, since the difference of contact area causes the pressure of b chamber to increase
Width is greater than c chamber, and then small piston 7 moves gradually downward under the action of the gel pressure of b chamber and c chamber difference.When the wedge of small piston 7
After shape end enters the wedge gap that left half steel disc 15 combines formation with right half steel disc 16, small piston 7 will be applied to left half steel disc
15 and right half steel disc, 16 1 extruding forces, apply half steel disc 15 of a left side while elasticity of compression rubber strip 18, with right half steel disc 16
17 1 pressing forces of I-shaped sealing ring are added to, I-shaped sealing ring 17 is made to compress interior steel bushing 12, enhance I-shaped sealing ring 17
Sealing effect, prevent the gel in hydraulic cavities from leaking.When piston 1 moves downward under the action of engine, cylinder body 9
In b chamber and c chamber it is smaller and smaller to the pressure of small piston 7, due to the difference of contact area cause b chamber pressure amount of decrease be greater than c chamber,
Then small piston 7 gradually moves upwards under the action of b chamber and poor c chamber gel pressure, and the restoring force of elastic rubber strip 18 pushes
Half steel disc 15 of a left side and right half steel disc 16 are returned to original position, meanwhile, half steel disc 15 of a left side and right half steel disc 16 are to I-shaped sealing ring
17 pressing force disappears, and I-shaped sealing ring 17 restores nature sealing state, avoids I-shaped 17 long-time of sealing ring and is in
External force impaction state.To not only reach the sealing effect for enhancing I-shaped sealing ring 17 using external force, but also utilize intermittent
Impaction state does not improve the service life of I-shaped sealing ring 17 for external force impaction state and external force.The present invention provides a kind of knot
Structure is simple and convenient to operate, sealing effect is good, practical, service life is long, suitable for the robotically-driven system of underwater continuous operation
The sealing device of system variable stiffness apparatus, the invention utilize piston side-to-side movement and hydraulic differential principle, pass through cylinder body
The variation of inner gel pressure difference makes small piston move downward or move upwards, and left half steel disc and right half steel disc is pushed to compress I-shaped
Type sealing ring or I-shaped sealing ring are in nature impaction state, to enhance the circle sealing effect of I-shaped sealing, avoid
I-shaped sealing ring is in external force impaction state and fails for a long time.This intermittent I-shaped sealing ring is compressed close by external force
The state that envelope seals naturally with I-shaped sealing ring, improves the service life of I-shaped sealing ring and making for entire sealing device
Use the period.
Claims (4)
1. a kind of sealing device of underwater robot drive system variable stiffness apparatus, it is characterised in that：Including piston, piston shell,
Sealing mechanism, rubber tube component, the piston are arranged in one end of piston shell；The rubber tube component includes being arranged in piston
Interior steel bushing in the other end of shell, the rubber tube that interior steel bushing outer end outer steel sleeve is set, is connected to outer steel sleeve end；It is described close
Sealing mechanism includes pressurizing pack and seal assembly, and pressurizing pack includes the hydraulic fitting being arranged in piston shell, is arranged in work
It fills in the mounting flange on shell, the cylinder body being arranged on mounting flange, the cylinder end caps that cylinder body upper end is set, be arranged in cylinder body
Small piston, connect cylinder body and hydraulic cylinder connector connecting tube, seal assembly includes being arranged between interior steel bushing and piston shell
I-shaped sealing ring, left half steel disc, right half steel disc and elastic rubber strip, the I-shaped sealing ring are arranged in inner cylinder liner appearance
Face, between left half steel disc and right half steel disc, half steel disc, right half steel disc and elastic rubber strip are formed for the elastic rubber strip setting
Ring structure be arranged between I-shaped sealing ring and piston shell, and between the end of left half steel disc and the end of right half steel disc
Wedge gap is formed, the lower end of the small piston is the tapered end cooperated with wedge gap.
2. a kind of sealing device of underwater robot drive system variable stiffness apparatus according to claim 1, feature exist
In：Sealing element is provided between piston and piston shell.
3. a kind of sealing device of underwater robot drive system variable stiffness apparatus according to claim 1 or 2, feature
It is：It is provided with a chamber, b chamber and c chamber in the cylinder body, enters laterally cylinder body from connecting tube and is divided into b chamber to small piston top, it is small
The vertical chamber on the piston left side is a chamber, and a chamber and b chamber intersect perforation, are partially c chamber below small piston.
4. a kind of sealing device of underwater robot drive system variable stiffness apparatus according to claim 3, feature exist
In：When piston moves right under the action of external engine, the gel in promotion fluid chamber is along hydraulic fitting and connection
Pipe enters cylinder body, and as piston constantly moves right, b chamber and c chamber are increasing to the pressure of small piston, due to contact area
Difference causes the pressure amplification of b chamber to be greater than c chamber, and small piston is transported gradually downward under the action of the gel pressure of b chamber and c chamber difference
Dynamic, after the tapered end of small piston, which enters left half steel disc, combines the wedge gap to be formed with right half steel disc, small piston is applied to
One extruding force of left half steel disc and right half steel disc makes left half steel disc and right half steel disc while elasticity of compression rubber strip, applies
It gives I-shaped sealing ring one pressing force, I-shaped sealing ring is made to compress interior steel bushing；
When piston moves downward under the action of engine, b chamber and c chamber are smaller and smaller to the pressure of small piston in cylinder body, by
The pressure amount of decrease of b chamber is caused to be greater than c chamber, then effect of the small piston in b chamber and c chamber gel pressure difference in the difference of contact area
Under gradually move upwards, the restoring force of elastic rubber strip pushes left half steel disc and right half steel disc to be restored to original position, meanwhile, left half
Steel disc and right half steel disc disappear to the pressing force of I-shaped sealing ring, and I-shaped sealing ring restores nature sealing state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810510965.3A CN108839777A (en) | 2018-05-25 | 2018-05-25 | A kind of sealing device of underwater robot drive system variable stiffness apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810510965.3A CN108839777A (en) | 2018-05-25 | 2018-05-25 | A kind of sealing device of underwater robot drive system variable stiffness apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108839777A true CN108839777A (en) | 2018-11-20 |
Family
ID=64213450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810510965.3A Pending CN108839777A (en) | 2018-05-25 | 2018-05-25 | A kind of sealing device of underwater robot drive system variable stiffness apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN108839777A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4796895A (en) * | 1988-01-25 | 1989-01-10 | General Motors Corporation | Self adjusting seal for high pressure supply line |
| CN1167889A (en) * | 1996-03-04 | 1997-12-17 | 乔治·菲舍尔·瓦加公司 | Coupling device |
| CN2738042Y (en) * | 2004-01-12 | 2005-11-02 | 王永豪 | Constant sealing piston ring and matched piston thereof |
| CN101042194A (en) * | 2006-03-21 | 2007-09-26 | 赵益民 | Cylinder piston moving seal structure |
| CN201013898Y (en) * | 2007-03-16 | 2008-01-30 | 董国惠 | Squeezing type sealed ring |
| CN102889388A (en) * | 2012-10-19 | 2013-01-23 | 东北石油大学 | Self-adapted sealing device of piston of hydraulic cylinder |
| CN103712058A (en) * | 2013-01-22 | 2014-04-09 | 上海减压器厂有限公司 | Top tressure type differential seal connecting interface |
| CN104314911A (en) * | 2014-08-20 | 2015-01-28 | 青岛开世密封工业有限公司 | Pneumatic sealing device |
| CN106956759A (en) * | 2017-04-26 | 2017-07-18 | 哈尔滨工程大学 | A kind of imitative fish underwater robot tail drive system variable stiffness apparatus |
-
2018
- 2018-05-25 CN CN201810510965.3A patent/CN108839777A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4796895A (en) * | 1988-01-25 | 1989-01-10 | General Motors Corporation | Self adjusting seal for high pressure supply line |
| CN1167889A (en) * | 1996-03-04 | 1997-12-17 | 乔治·菲舍尔·瓦加公司 | Coupling device |
| CN2738042Y (en) * | 2004-01-12 | 2005-11-02 | 王永豪 | Constant sealing piston ring and matched piston thereof |
| CN101042194A (en) * | 2006-03-21 | 2007-09-26 | 赵益民 | Cylinder piston moving seal structure |
| CN201013898Y (en) * | 2007-03-16 | 2008-01-30 | 董国惠 | Squeezing type sealed ring |
| CN102889388A (en) * | 2012-10-19 | 2013-01-23 | 东北石油大学 | Self-adapted sealing device of piston of hydraulic cylinder |
| CN103712058A (en) * | 2013-01-22 | 2014-04-09 | 上海减压器厂有限公司 | Top tressure type differential seal connecting interface |
| CN104314911A (en) * | 2014-08-20 | 2015-01-28 | 青岛开世密封工业有限公司 | Pneumatic sealing device |
| CN106956759A (en) * | 2017-04-26 | 2017-07-18 | 哈尔滨工程大学 | A kind of imitative fish underwater robot tail drive system variable stiffness apparatus |
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Application publication date: 20181120 |