CN106837778A - One kind forces lifting plunger slippery boots assembly - Google Patents
One kind forces lifting plunger slippery boots assembly Download PDFInfo
- Publication number
- CN106837778A CN106837778A CN201710176177.0A CN201710176177A CN106837778A CN 106837778 A CN106837778 A CN 106837778A CN 201710176177 A CN201710176177 A CN 201710176177A CN 106837778 A CN106837778 A CN 106837778A
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- CN
- China
- Prior art keywords
- plunger
- piston shoes
- ball rod
- ball
- slippery boots
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
- F04B1/124—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
- F04B1/124—Pistons
- F04B1/126—Piston shoe retaining means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/06—Venting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/22—Arrangements for enabling ready assembly or disassembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0448—Steel
- F05C2201/0457—Cemented steel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0469—Other heavy metals
- F05C2201/0475—Copper or alloys thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2251/00—Material properties
- F05C2251/14—Self lubricating materials; Solid lubricants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2253/00—Other material characteristics; Treatment of material
- F05C2253/12—Coating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention belongs to water pressure plunger pump field, and a kind of pressure lifting plunger slippery boots assembly, including plunger, ball rod, piston shoes, check pin, closure, sealing ring and filling plug are disclosed, through hole is vertically arranged with along plunger；The external screw thread coordinated with the tapped through hole of plunger is provided with ball rod；Piston shoes include interior piston shoes and outer piston shoes；Ball rod is connected on the internal thread of the plunger after passing through outer piston shoes by the external screw thread；The closure is arranged in the plunger, and it is contacted with the square spigot of the ball rod；The filling plug be filled in the through hole of the plunger and with the closure away from the ball rod end thereof contacts.Piston shoes of the invention are combined by interior piston shoes and outer piston shoes, and processing and manufacturing is simple, and difficulty is small.Different from the bag boots bottling technique of traditional dependence mechanical deformation, the present invention ensures that piston shoes coordinate with ball rod from structure, it is to avoid the phenomenon for pulling piston shoes of traditional structure.
Description
Technical field
The invention belongs to water hydraulic component field, lifting plunger slippery boots assembly is forced more particularly, to one kind.
Background technology
Water Hydraulic Pump is the core drive element in water hydraulic system.The structure shape of the Water Hydraulic Pump for having researched and developed at present
Formula mainly has gear type, vane type and plunger type.For gear pump and vane pump, plunger displacement pump have operating pressure it is high and
The characteristics of PV values of friction pair are small under identical operating mode, is suitable to low-viscosity (mobile) liquids such as seawater, fresh water as working media.In reality
Compare successful Water Hydraulic Pump in and all use plunger-type structure.
Plunger piston slippery boots assembly is the critical component of swash plate plunger pump.Because piston shoes make oscillating motion relative to plunger, because
And must be by the way of ball pivot connection between plunger and piston shoes.The method that traditional plunger piston slippery boots assembly is closed up using bag boots, according to
By the mechanically deform of piston shoes, the connection of plunger ball and piston shoes is completed.But the plunger piston slippery boots assembly of the method is used, its connection
Intensity is relatively low, larger or in the case of need to forcing backhaul in backhaul load, is easily opened at the closing in of piston shoes, makes piston shoes with bulb
Gap increases, and plunger effective stroke shortens, the flow-reduction of pump；Piston shoes and plunger are completely disengaged from when serious, i.e., so-called " de- boots
Phenomenon ", ultimately resulting in pump can not work.
Patent ZL200710051460.7 discloses a kind of plunger piston slippery boots assembly, and screw thread is used between its plunger and ball rod
Connection, check pin is locking, but without wrench operated space between plunger and ball rod, threaded pre-tightening is difficult.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, lifting plunger piston shoes group is forced the invention provides one kind
Part, using combined type piston shoes structure, ball rod is used with plunger and is threadedly coupled.The structure plunger piston slippery boots assembly has the backhaul can
Lean on, it is adaptable to buoyancy adjustment sea water pump, be also applied for other axial plunger pumps.
To achieve the above object, it is proposed, according to the invention, force lifting plunger slippery boots assembly there is provided one kind, it is characterised in that
Including plunger, ball rod, piston shoes, check pin, closure, sealing ring and filling plug, wherein,
The first locating slot and internal thread are provided with along the inwall of the through hole that is vertically arranged with of the plunger, and the plunger；
One end of the ball rod be bulb, the other end be outer six square toes, and be provided with the ball rod with it is described
The external screw thread that the tapped through hole of plunger coordinates；
The piston shoes include interior piston shoes and outer piston shoes, and the interior piston shoes are arranged in the outer piston shoes and are threaded in
On the inwall of the outer piston shoes, the first ball-and-socket face and the second ball-and-socket face are respectively arranged with the interior piston shoes and outer piston shoes, it is described
The bulb of ball rod is contacted with the first ball-and-socket face and the second ball-and-socket face, described outer so as to the bulb of the ball rod be limited in
In piston shoes；
The ball rod is connected on the internal thread of the plunger after passing through the outer piston shoes by the external screw thread, and
The ball rod is provided with the second locating slot in the position corresponding to first locating slot；
The check pin is stretched into first locating slot and the second locating slot simultaneously, for preventing the ball rod
Loosen；
The closure is arranged in the plunger, and it is contacted with the square spigot of the ball rod, the closure
One end away from the square spigot is provided with annular breach, the sealing ring is set on the annular breach, to prevent work to be situated between
Matter causes corrosion failure into the threaded connection place of plunger and ball rod to screw thread；
The filling plug is filled in the through hole of the plunger and with the closure away from the one of the ball rod
End in contact.
Preferably, it is coated with anticorrosive anti-wear alloy coat on the external cylindrical surface of the plunger.
Preferably, it is vertically arranged with steam vent along the filling plug.
Preferably, the plunger is made of stainless steel.
Preferably, the ball rod is made up of high strength alloy steel.
Preferably, the interior piston shoes and outer piston shoes are made by copper alloy.
In general, by the contemplated above technical scheme of the present invention compared with prior art, can obtain down and show
Beneficial effect：
1) piston shoes are combined by interior piston shoes and outer piston shoes, and processing and manufacturing is simple, and difficulty is small.Different from traditional dependence machine
The bag boots bottling technique of tool deformation, the present invention ensures that piston shoes and ball rod coordinate from structure, it is to avoid pulling for traditional structure
The phenomenon of piston shoes.
2) plunger is hollow structure, it is easy to fabricated.What the suitable seawater of external cylindrical surface spraying lubricated has anticorrosive wear-resistant
Alloy is damaged, the life-span of plunger is improve.
3) afterbody of ball rod is provided with six square toes, and spanner screens is increased when being assembled with plunger, facilitates the pretension of screw thread,
Improve the connection reliability of ball rod and plunger.
4) plunger body is provided with closure and sealing ring, has completely cut off corrosion of the seawater to ball rod.
5) ball rod is respectively high strength alloy steel and copper alloy with piston shoes material, and tribological property is excellent under oil lubrication；
Plunger matrix material is stainless steel, and surface spraying has corrosion resisting alloy, it is adaptable to which seawater lubricates；According to different lubricant mediums,
The different material of selection, gives full play to respective advantage, makes this structure plunger piston slippery boots assembly have reliability high, the spy of long lifespan
Point.
Brief description of the drawings
Fig. 1 show the present invention and forces lifting plunger slippery boots assembly structure chart；
Fig. 2 show piston structure figure of the invention；
Fig. 3 show ball rod structure chart of the invention；
Fig. 4 show piston shoes structure chart of the invention；
Fig. 5 show filling plug structure chart of the invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as additionally, technical characteristic involved in invention described below each implementation method
Not constituting conflict each other can just be mutually combined.
1~Fig. 5 of reference picture, one kind forces the component of lifting plunger 3 piston shoes 1, including plunger 3, ball rod 2, piston shoes 1, locking
Pin 4, closure 6, sealing ring 5 and filling plug 7, wherein,
The first locating slot and internal thread are provided with along the inwall of the through hole that is vertically arranged with of the plunger 3, and the plunger 3
3.4；
One end of the ball rod 2 be bulb, the other end be outer six square toes 2.3, and be provided with the ball rod 2 with
The external screw thread 2.2 that the tapped through hole of the plunger 3 coordinates；
The piston shoes 1 include interior piston shoes 1.1 and outer piston shoes 1.2, and the interior piston shoes 1.1 are arranged in the outer piston shoes 1.2
And it is threaded on the inwall of the outer piston shoes 1.2, first is respectively arranged with the interior piston shoes 1.1 and outer piston shoes 1.2
Ball-and-socket face and the second ball-and-socket face, the bulb of the ball rod 2 are contacted with the first ball-and-socket face and the second ball-and-socket face, so that will be described
The bulb of ball rod 2 is limited in the outer piston shoes 1.2；
The ball rod 2 passes through the interior spiral shell that the external screw thread 2.2 is connected to the plunger 3 after passing through the outer piston shoes 1.2
On line 3.4, and the ball rod 2 is provided with the second locating slot in the position corresponding to first locating slot；
The check pin 4 is stretched into first locating slot and the second locating slot simultaneously, for preventing the bulb
Bar 2 loosens；
The closure 6 is arranged in the plunger 3, and it is contacted with the square spigot of the ball rod 2, the sealing
Lid 6 is provided with annular breach away from one end of the square spigot, the sealing ring 5 is set on the annular breach, to prevent work
Make medium and corrosion failure is caused to screw thread into the threaded connection place of plunger 3 and ball rod 2；
The filling plug 7 is filled in the through hole of the plunger 3 and with the closure 6 away from the ball rod 2
End thereof contacts.
Further, anticorrosive anti-wear alloy coat 3.2 is coated with the external cylindrical surface of the plunger 3, along the filling
Plug 7 is vertically arranged with steam vent 7.1, and exhaust in plunger 3 when being so easy to assembling, the plunger 3 is made of stainless steel, institute
State ball rod 2 to be made up of high strength alloy steel, the interior piston shoes 1.1 and outer piston shoes 1.2 are made by copper alloy.
Reference picture 1, the present invention has piston shoes 1, plunger 3, ball rod 2, check pin 4, closure 6, sealing ring 5 and filling
Plug 7；The plunger 3 includes plunger matrix 3.1, and through hole is set on plunger matrix 3.1, and through hole is divided into location hole 3.3, internal thread
3.4 and cavity 3.5, the outer surface spraying anticorrosive anti-wear alloy coat 3.2 of plunger 3；Ball rod 2 is provided with locating shoulder
2.1st, external screw thread 2.2 and outer six square toes 2.3；Piston shoes 1 are made up of interior piston shoes 1.1 and outer piston shoes 1.2, one of the bulb of ball rod 2
Bulb separation face is contacted with the ball-and-socket face of interior piston shoes 1.1, and another part sphere of bulb is contacted with the ball-and-socket face of outer piston shoes 1.2, interior piston shoes
1.1 and outer piston shoes 1.2 be connected through a screw thread；Check pin 4 be after ball rod 2 and the assembly pretightening of plunger 3 vertically, screw thread connects
After connecing place's punching, check pin 4 is reassembled, check pin 4 is transition or interference fit with hole；Closure 6 is provided with annular groove
6.1, for assembling sealing ring 5, prevent working media seawater from entering threaded connection place, corrosion failure is caused to screw thread；Closure 6
Annular groove 6.1, it is ensured that the air pressure of closed chamber and atmospheric pressure are balanced during assembling；Filling plug 7 is provided with steam vent 7.1, can
Gas when ensureing assembling in the cavity 3.5 of plunger 3 is normally discharged；Filling plug 7 selects low-density engineering plastics, for filling
Plunger space, reduces minimum dead volume when plunger piston slippery boots assembly works, and improves the self-priming performance of buoyancy adjustment sea water pump.
Lifting plunger slippery boots assembly is forced, its course of work is as follows：It is latent when increasing in sea water hydraulic buoyancy regulating system
During the amount of thinking highly of, from ocean to water tank water filling, when stroke is pressed, the pressure of plunger cavity is more than lubricant reservoir for buoyancy adjustment sea water pump
Pressure (pressure of lubricant reservoir is consistently equal to marine environment pressure), inhales the pressure that stroke plunger cavity pressure is substantially equal to lubricant reservoir
Power, then force the main compression chord of lifting plunger slippery boots assembly；When the latent amount of thinking highly of is reduced, from water tank to ocean draining, buoyancy
When stroke is pressed, plunger cavity pressure is approximately equal to the pressure of lubricant reservoir to regulation sea water pump, inhales stroke plunger cavity pressure less than lubrication
The pressure of oil pocket, forces the main tension stress of lifting plunger slippery boots assembly, makes plunger piston slippery boots assembly away from swash plate.By return plate
With piston shoes 1, force plunger 3 " dragging ".
Lifting plunger slippery boots assembly is forced, its assembling process is as follows：Ball rod 2 loads outer piston shoes 1.2, and interior piston shoes 1.1 are filled
Enter outer piston shoes 1.2, the screw thread of interior piston shoes 1.1 and outer piston shoes 1.2 is locking using screw thread glue；Ball rod 2 and the component of piston shoes 1 are loaded
In plunger 3, with spanner from outer six square toes 2.3 of the other end by the moment of torsion of threaded pre-tightening to regulation；Processing pin hole；Assembling is locking
Pin 4, check pin 4 is transition or interference fit with pin hole；Assembling closure 6 and sealing ring 5；Assembling filling plug 7, fills out
It is interference fit to fill plug 7 with plunger 3, can be assembled using freezing.
The material of plunger matrix 3.1 of the present invention is stainless steel, and plunger coating 3.2 is anticorrosive anti-wear alloy, using thermal jet
Technique is applied, with the neither too hard, nor too soft convenient processing of core, the characteristics of periphery anti-corrosion wear, it is adaptable to water lubrication.The material of ball rod 2
Expect to be high strength alloy steel, by heat treatment reinforcement, the material of piston shoes 1 is the material of copper alloy, ball rod 2 and piston shoes 1, intolerant to sea
Aqueous corrosion, it is adaptable to oil lubrication.
As it will be easily appreciated by one skilled in the art that the foregoing is only presently preferred embodiments of the present invention, it is not used to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles in the present invention etc., all should include
Within protection scope of the present invention.
Claims (6)
1. it is a kind of to force lifting plunger slippery boots assembly, it is characterised in that including plunger, ball rod, piston shoes, check pin, sealing
Lid, sealing ring and filling plug, wherein,
The first locating slot and internal thread are provided with along the inwall of the through hole that is vertically arranged with of the plunger, and the plunger；
One end of the ball rod is bulb, and the other end is outer six square toes, and is provided with the ball rod and the plunger
Tapped through hole coordinate external screw thread；
The piston shoes include interior piston shoes and outer piston shoes, and the interior piston shoes are arranged in the outer piston shoes and are threaded in described
On the inwall of outer piston shoes, the first ball-and-socket face and the second ball-and-socket face, the bulb are respectively arranged with the interior piston shoes and outer piston shoes
The bulb of bar is contacted with the first ball-and-socket face and the second ball-and-socket face, so as to the bulb of the ball rod is limited in into the outer piston shoes
It is interior；
The ball rod is connected on the internal thread of the plunger after passing through the outer piston shoes by the external screw thread, and described
Ball rod is provided with the second locating slot in the position corresponding to first locating slot；
The check pin is stretched into first locating slot and the second locating slot simultaneously, for preventing the ball rod pine
It is dynamic；
The closure is arranged in the plunger, and it is contacted with the square spigot of the ball rod, the closure away from
One end of the square spigot is provided with annular breach, and the sealing ring is set on the annular breach, to prevent working media from entering
Enter the threaded connection place of plunger and ball rod and corrosion failure is caused to screw thread；
The filling plug be filled in the through hole of the plunger and with the closure away from the ball rod a termination
Touch.
2. one kind according to claim 1 forces lifting plunger slippery boots assembly, it is characterised in that the outside cylinder of the plunger
Anticorrosive anti-wear alloy coat is coated with face.
3. one kind according to claim 1 forces lifting plunger slippery boots assembly, it is characterised in that along the filling plug
It is vertically arranged with steam vent.
4. one kind according to claim 1 forces lifting plunger slippery boots assembly, it is characterised in that the plunger is by stainless steel
It is made.
5. one kind according to claim 1 forces lifting plunger slippery boots assembly, it is characterised in that the ball rod is by high-strength
Degree steel alloy is made.
6. one kind according to claim 1 forces lifting plunger slippery boots assembly, it is characterised in that the interior piston shoes and outer cunning
Boots are made by copper alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710176177.0A CN106837778B (en) | 2017-03-23 | 2017-03-23 | A kind of pressure lifting plunger slippery boots assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710176177.0A CN106837778B (en) | 2017-03-23 | 2017-03-23 | A kind of pressure lifting plunger slippery boots assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106837778A true CN106837778A (en) | 2017-06-13 |
| CN106837778B CN106837778B (en) | 2018-12-07 |
Family
ID=59130905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710176177.0A Active CN106837778B (en) | 2017-03-23 | 2017-03-23 | A kind of pressure lifting plunger slippery boots assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106837778B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH714838A1 (en) * | 2018-03-22 | 2019-09-30 | Liebherr Machines Bulle Sa | Piston shoe unit for an axial piston machine. |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5392693A (en) * | 1994-03-02 | 1995-02-28 | Caterpillar Inc. | Piston assembly for a fluid translating device |
| CN101012817A (en) * | 2007-02-01 | 2007-08-08 | 华中科技大学 | Plunger piston slippery boots assembly |
| CN202690345U (en) * | 2012-05-29 | 2013-01-23 | 华中科技大学 | Full-depth buoyancy adjusting seawater pump |
| CN202731815U (en) * | 2012-08-08 | 2013-02-13 | 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 | Oil well head security sampler |
| CN103184990A (en) * | 2013-03-14 | 2013-07-03 | 北京工业大学 | Oblique plunger type pure water hydraulic swash plate pump |
| GB2502623A (en) * | 2012-06-01 | 2013-12-04 | Rolls Royce Engine Control Systems Ltd | Piston device with mechanism to secure piston to slipper |
| CN206592276U (en) * | 2017-03-23 | 2017-10-27 | 华中科技大学 | One kind forces lifting plunger slippery boots assembly |
-
2017
- 2017-03-23 CN CN201710176177.0A patent/CN106837778B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5392693A (en) * | 1994-03-02 | 1995-02-28 | Caterpillar Inc. | Piston assembly for a fluid translating device |
| CN101012817A (en) * | 2007-02-01 | 2007-08-08 | 华中科技大学 | Plunger piston slippery boots assembly |
| CN202690345U (en) * | 2012-05-29 | 2013-01-23 | 华中科技大学 | Full-depth buoyancy adjusting seawater pump |
| GB2502623A (en) * | 2012-06-01 | 2013-12-04 | Rolls Royce Engine Control Systems Ltd | Piston device with mechanism to secure piston to slipper |
| CN202731815U (en) * | 2012-08-08 | 2013-02-13 | 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 | Oil well head security sampler |
| CN103184990A (en) * | 2013-03-14 | 2013-07-03 | 北京工业大学 | Oblique plunger type pure water hydraulic swash plate pump |
| CN206592276U (en) * | 2017-03-23 | 2017-10-27 | 华中科技大学 | One kind forces lifting plunger slippery boots assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH714838A1 (en) * | 2018-03-22 | 2019-09-30 | Liebherr Machines Bulle Sa | Piston shoe unit for an axial piston machine. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106837778B (en) | 2018-12-07 |
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