CN107701544A - Electrohydraulic actuator oiling gas extraction system - Google Patents
Electrohydraulic actuator oiling gas extraction system Download PDFInfo
- Publication number
- CN107701544A CN107701544A CN201710981423.XA CN201710981423A CN107701544A CN 107701544 A CN107701544 A CN 107701544A CN 201710981423 A CN201710981423 A CN 201710981423A CN 107701544 A CN107701544 A CN 107701544A
- Authority
- CN
- China
- Prior art keywords
- oil
- filter
- hydraulic
- working connection
- connection block
- 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
Links
- 238000000605 extraction Methods 0.000 title claims abstract description 21
- 239000003921 oil Substances 0.000 claims abstract description 158
- 239000002828 fuel tank Substances 0.000 claims abstract description 29
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 20
- 239000000446 fuel Substances 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 8
- 239000004519 grease Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 230000008092 positive effect Effects 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/005—Filling or draining of fluid systems
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/615—Filtering means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The present invention provides a kind of electrohydraulic actuator oiling gas extraction system, to solve the problems, such as being how to improve oiling efficiency, its main points is：The each oil pocket of oil cylinder sets an oil extraction exhaust outlet；The upper hydraulic fluid port of fuel tank, gear pump, filter, electro-hydraulic actuator pouring orifice, the oil return opening of the oil extraction exhaust outlet of oil cylinder and fuel tank form closed loop oil circuit；Oil circuit between gear pump and filter is the interior oil duct formed of main oil path block；The front half section of oil circuit between filter and electro-hydraulic actuator note is the oil duct formed in working connection block to working connection block oil-out, second half section fuel lead；Oil circuit between each oil extraction exhaust outlet of oil cylinder and the oil return opening of fuel tank is transparent oil pipe, is one stop valve of each setting in each transparent oil pipe；Gear pump and hydraulic oil filter are arranged on working connection block.
Description
Technical field
The present invention relates to a kind of electrohydraulic actuator, specifically electrohydraulic actuator oiling gas extraction system.
Background technology
The electrohydraulic actuator being made up of drive cylinder 3 and integrating electro-hydraulic actuator 4（Referring to CN 204226323
U）, it is an oil system closed.In manufacture and maintenance process, to such oil system oiling, it is impossible to as to open system
Oiling is such, and with fuel charger or directly fluid is poured into fuel tank., because the suction inlet of pump in the closed system has pressure
Fluid is injected into system, it is necessary to the air in system be ejected, and needs are repeatedly reciprocal, could complete.Use at present
Method be to give system oiling with grease gun, but there is problems with this mode：It is that operating efficiency is low first, oil injecting speed
It is only per second to note several milliliters of oil；Next to that grease gun, when loading hydraulic oil, fluid easily by environmental pollution, pollutes thing and entered
Enter system, make system element bite, and contaminated fluid easily blocks pouring orifice, and then maloperation occurs.
The content of the invention
In order to solve the above technical problems, it is an object of the invention to provide a kind of electrohydraulic actuator oiling gas extraction system.
The object of the present invention is achieved like this：It is electro-hydraulic including being made up of drive cylinder and integrating electro-hydraulic actuator
Executing agency, it is characterized in that：Drive cylinder has two oil pockets in left and right, and each oil pocket sets an oil extraction exhaust outlet；Fuel tank oils
Mouth, gear pump, hydraulic oil filter, integrating electro-hydraulic actuator pouring orifice, the oil extraction exhaust outlet of drive cylinder and fuel tank return
Hydraulic fluid port forms closed loop oil circuit；Wherein, the oil circuit between the upper hydraulic fluid port of fuel tank and gear pump inserts fuel tank for the fuel sucking pipe of gear pump
In；Oil circuit between gear pump and hydraulic oil filter is the interior first paragraph main oil gallery formed of main oil path block；Hydraulic oil filter
The front half section oil circuit of oil circuit between integrating electro-hydraulic actuator pouring orifice is the second segment main oil gallery formed in main oil path block
To working connection block oil-out, second half section oil circuit is to be set between the pouring orifice of working connection block oil-out and integrated electric hydraulic actuator
The fuel lead put；Oil circuit between each oil extraction exhaust outlet of drive cylinder and the oil return opening of fuel tank is transparent oil pipe, each
Transparent oil pipe is one stop valve of each setting；Gear pump and hydraulic oil filter are arranged on working connection block.
Oiling exhaust process is：It is vented, the stop valve 1. closed on the transparent oil pipe of right chamber, opens left to the oiling of oil cylinder left chamber
Stop valve on the transparent oil pipe of chamber；2. starting motor, gear pump, the fluid in fuel tank is after fuel sucking pipe and gear pump boosting, pump
The main oil gallery in oil path block is become owner of, successively by hydraulic oil filter to working connection block oil-out, then is entered by fuel lead
The pouring orifice of integrating electro-hydraulic actuator；3. starting integrating electro-hydraulic actuator, it is moved to the left drive cylinder piston, oil cylinder is left
The air and fluid of chamber flow back to fuel tank through the transparent oil pipe of left chamber, and completion is once vented, while the oil of fuel tank ensures by filter
Into electro-hydraulic actuator fluid it is clean.
It is vented, the stop valve closed on the transparent oil pipe of left chamber, is opened on the transparent oil pipe of right chamber to right cavity of cylinder oiling again
Stop valve；Repeat the above steps 2.；3. starting integrating electro-hydraulic actuator, drive cylinder piston is set to move right, right cavity of cylinder
Air and fluid flow back to fuel tank through the transparent oil pipe of right chamber, complete secondary exhaust.
Said process is repeated, whether observation transparent pipe contains bubble during oil extraction, if without bubble, show to integrate
Type electro-hydraulic actuator oiling exhaust work terminates.By regulating valve, the pressure oil ensured into integrating electro-hydraulic actuator does not surpass
Pressure.
Compared with prior art, the positive effect of the present invention is：1. operating efficiency is high.Oiling efficiency is per second can the milli of note 30
Rise hydraulic oil；2. stain resistance is strong.Hydraulic oil filter can effectively resist oil contamination caused by extraneous factor；3. automate
Degree is high.Integrate oiling, filtering and degassing function, equipment only needs to switch after starting；4. due to having used working connection block, knot
Structure is compact, is easy to carry.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the schematic diagram of the present invention.
Fig. 2 is the enlarged drawing of the hydraulic oil filter 9 in Fig. 1.
Embodiment
Referring to Fig. 1, it includes the electrohydraulic actuator being made up of drive cylinder 12 and integrating electro-hydraulic actuator 11, driving
Oil cylinder 12 has two oil pockets in left and right, and left oil pocket sets left bank oil exhaust outlet B1, and right oil pocket sets right oil extraction exhaust outlet B2；Fuel tank 18
Upper hydraulic fluid port P0, gear pump 20, hydraulic oil filter 9, integrating electro-hydraulic actuator pouring orifice P1, drive cylinder oil extraction exhaust
The oil return inlet T 1 of mouth B1, B2 and fuel tank, T2 form closed loop oil circuit；Oil circuit between the upper hydraulic fluid port and gear pump of fuel tank is gear pump
Fuel sucking pipe 19 insert fuel tank in；Oil circuit between gear pump and hydraulic oil filter is the interior first paragraph formed of main oil path block 6
Main oil gallery 8.1, hydraulic oil filter and gear pump are separately mounted to above working connection block and following；Hydraulic oil filter and collection
The front half section oil circuit for the oil circuit being molded between electro-hydraulic actuator pouring orifice P1 is the interior second segment main oil gallery 8.2 formed of main oil path block
To working connection block oil-out P, second half section oil circuit is between the pouring orifice of working connection block oil-out and integrated electric hydraulic actuator
The fuel lead 10 of setting；
Referring to Fig. 2, the hydraulic oil filter 9 refers to, filter core 9.3 and the filtering with oil passage 9.6 and oil discharge passage 9.4
Device oil path block 9.5 is sequentially arranged in sleeve 9.1, and the space between filter core and sleeve is hydraulic oil filter oil input channel 9.2, will
The reverse mounted oil discharge passage 9.4 on the upper surface of working connection block, filter oil path block 9.5 of sleeve and second segment main oil gallery
8.2 linkings connect, and the passage 9.6 that oils on filter oil path block is connected connection with first paragraph main oil gallery 8.1；
Oil circuit between drive cylinder left chamber oil exhaust outlet B1 and the oil return inlet T 1 of fuel tank is left chamber transparent pipe 13, transparent in left chamber
Left stop valve 16 is set on pipe；Oil circuit between drive cylinder right chamber oil exhaust outlet B2 and the oil return inlet T 2 of fuel tank is that right chamber is transparent
Pipe 14, right stop valve 15 is set on right chamber transparent pipe.
Referring to Fig. 1, in order to ensure entering the pressure oil of electro-hydraulic actuator not superpressure, regulating valve 7 is set to adjust in systems
Oil pressure, it is specifically that regulating valve is arranged on above working connection block, and oil duct 7.1 on pressure regulator valve is opened on first paragraph main oil gallery and is led to
Pressure regulator valve oil inlet, pressure regulator valve oil discharge passage 7.2 is set, and pressure regulator valve oil discharge passage 7.2 is led under working connection block in working connection block
End face, the upper end of drain mast 17 insertion pressure regulator valve oil discharge passage 7.2, lower end is inserted in fuel tank.In order to monitor gear pump outlet pressure,
Pressure gauge 4 is set in systems, is specifically, opens the left side that pressure gauge oil duct 21 leads to working connection block to the left on first paragraph main oil gallery
End face, in working connection block left side, installation pressure gauge oil path block 3, pressure gauge 4, pressure are installed in the upper surface of pressure gauge oil path block
Oil duct 5 in table oil path block connects pressure gauge oil duct 21 with pressure gauge oil inlet.
To the oiling of oil cylinder left chamber exhaust method be：1. closing right stop valve, left stop valve is opened；2. start motor 1, connection
Axle device 2 and gear pump, the fluid in fuel tank is after fuel sucking pipe and gear pump boosting, the main oil gallery that is pumped into working connection block, successively
Oil-out P by hydraulic oil filter to working connection block its right end face, then performed by fuel lead into integrating electro-hydraulic
The pouring orifice of device；3. starting integrating electro-hydraulic actuator, it is moved to the left drive cylinder piston, the air and fluid of oil cylinder left chamber
Fuel tank is flow back to through the transparent oil pipe of left chamber, completion is once vented.
To right cavity of cylinder oiling exhaust method be：The left stop valve closed on the transparent oil pipe of left chamber, opens right stop valve；
Repeat the above steps 2.；3. starting integrating electro-hydraulic actuator, drive cylinder piston is moved right, the air of right cavity of cylinder and
Fluid flows back to fuel tank through the transparent oil pipe of right chamber, completes secondary exhaust.
Said process is repeated, whether observation transparent pipe contains bubble during oil extraction, if without bubble, show to integrate
Type electro-hydraulic actuator oiling exhaust work terminates.
Pressure gauge is monitoring gear pump outlet pressure.In above process, pressure gauge is observed at any time, it is more when hydraulic pressure is excessive
Remaining fluid flows back to fuel tank by regulating valve and drain mast successively, it is ensured that into the pressure oil not superpressure of electro-hydraulic actuator.Upper
It is by filtering, to ensure into the clean of the fluid of electro-hydraulic actuator into the oil before electro-hydraulic actuator during stating.
Claims (3)
1. a kind of electrohydraulic actuator oiling gas extraction system, it includes the electricity being made up of drive cylinder and integrating electro-hydraulic actuator
Liquid executing agency, it is characterized in that：Drive cylinder has two oil pockets in left and right, and each oil pocket sets an oil extraction exhaust outlet；Fuel tank it is upper
Hydraulic fluid port, gear pump, hydraulic oil filter, integrating electro-hydraulic actuator pouring orifice, the oil extraction exhaust outlet of drive cylinder and fuel tank
Oil return opening forms closed loop oil circuit；Wherein, the oil circuit between the upper hydraulic fluid port of fuel tank and gear pump is oily for the fuel sucking pipe insertion of gear pump
In case；Oil circuit between gear pump and hydraulic oil filter is the interior first paragraph main oil gallery formed of main oil path block；Hydraulic oil filtering
The front half section oil circuit of oil circuit between device and integrating electro-hydraulic actuator pouring orifice is the main oil of second segment formed in working connection block
To working connection block oil-out, second half section oil circuit is between the pouring orifice of working connection block oil-out and integrated electric hydraulic actuator in road
The fuel lead of setting；Oil circuit between each oil extraction exhaust outlet of drive cylinder and the oil return opening of fuel tank is transparent oil pipe, every
Individual transparent oil pipe is one stop valve of each setting；Gear pump and hydraulic oil filter are arranged on working connection block.
2. according to the electrohydraulic actuator oiling gas extraction system described in claim 1, it is characterized in that：The hydraulic oil filter is
Refer to, filter core and the filter oil path block with oil passage and oil discharge passage are sequentially arranged in sleeve, between filter core and sleeve
Space be hydraulic oil filter oil input channel, sleeve is reverse mounted on the upper surface of working connection block, filter oil path block
Oil discharge passage is connected connection with second segment main oil gallery, and the passage that oils on filter oil path block is connected company with first paragraph main oil gallery
It is logical.
3. according to the electrohydraulic actuator oiling gas extraction system described in claim 1 or 2, it is characterized in that：It is provided with regulating valve,
Regulating valve is arranged on above working connection block, and oil duct on pressure regulator valve is opened on first paragraph main oil gallery and leads to pressure regulator valve oil inlet, main
Pressure regulator valve oil discharge passage is set in oil path block, and pressure regulator valve oil discharge passage leads to working connection block lower surface, and the insertion of drain mast upper end is adjusted
Pressure valve oil discharge passage, lower end are inserted in fuel tank；It is also provided with pressure gauge, opens pressure gauge oil duct to the left on first paragraph main oil gallery
The left side of working connection block is led to, pressure gauge oil path block is installed in working connection block left side, in the upper surface of pressure gauge oil path block
Pressure gauge is installed, the oil duct in pressure gauge oil path block connects pressure gauge oil duct with pressure gauge oil inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981423.XA CN107701544B (en) | 2017-10-20 | 2017-10-20 | Oiling and exhausting system of electrohydraulic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981423.XA CN107701544B (en) | 2017-10-20 | 2017-10-20 | Oiling and exhausting system of electrohydraulic actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107701544A true CN107701544A (en) | 2018-02-16 |
| CN107701544B CN107701544B (en) | 2023-12-12 |
Family
ID=61182880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710981423.XA Active CN107701544B (en) | 2017-10-20 | 2017-10-20 | Oiling and exhausting system of electrohydraulic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107701544B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266419A (en) * | 2018-04-11 | 2018-07-10 | 新乡市新倍增自动化设备有限公司 | Integrate the device of dynamic Control oil circuit for Electrical hydrostatic actuator |
| CN108408680A (en) * | 2018-05-07 | 2018-08-17 | 宁波太平洋电控系统有限公司 | A kind of discharge equipment of VVT actuators |
| CN110745765A (en) * | 2019-11-19 | 2020-02-04 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | A single-port oil injection device for a mud pulse generator and a method of using the same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1488711A (en) * | 1973-09-26 | 1977-10-12 | Nihon Spindle Mfg Co Ltd | Hydraulic valve |
| CN1865746A (en) * | 2005-05-17 | 2006-11-22 | 沈阳东北电力调节技术有限公司 | Integrated electro-hydraulic actuator capable of carrying out quick action and adjustment |
| DE102006012008A1 (en) * | 2006-03-14 | 2007-09-20 | Robert Bosch Gmbh | Control device for rotor blade adjustment |
| CN101865186A (en) * | 2010-04-13 | 2010-10-20 | 中国人民解放军总装备部军械技术研究所 | Online oil filling and purifying device for hydraulic equipment |
| CN106812736A (en) * | 2017-03-21 | 2017-06-09 | 沈阳耐思控制技术有限公司 | The airtight positive pressure fuel tank of integrated electrical liquid execution system |
| CN207526813U (en) * | 2017-10-20 | 2018-06-22 | 沈阳东北电力调节技术有限公司 | Electrohydraulic actuator oiling exhaust system |
-
2017
- 2017-10-20 CN CN201710981423.XA patent/CN107701544B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1488711A (en) * | 1973-09-26 | 1977-10-12 | Nihon Spindle Mfg Co Ltd | Hydraulic valve |
| CN1865746A (en) * | 2005-05-17 | 2006-11-22 | 沈阳东北电力调节技术有限公司 | Integrated electro-hydraulic actuator capable of carrying out quick action and adjustment |
| DE102006012008A1 (en) * | 2006-03-14 | 2007-09-20 | Robert Bosch Gmbh | Control device for rotor blade adjustment |
| CN101865186A (en) * | 2010-04-13 | 2010-10-20 | 中国人民解放军总装备部军械技术研究所 | Online oil filling and purifying device for hydraulic equipment |
| CN106812736A (en) * | 2017-03-21 | 2017-06-09 | 沈阳耐思控制技术有限公司 | The airtight positive pressure fuel tank of integrated electrical liquid execution system |
| CN207526813U (en) * | 2017-10-20 | 2018-06-22 | 沈阳东北电力调节技术有限公司 | Electrohydraulic actuator oiling exhaust system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266419A (en) * | 2018-04-11 | 2018-07-10 | 新乡市新倍增自动化设备有限公司 | Integrate the device of dynamic Control oil circuit for Electrical hydrostatic actuator |
| CN108266419B (en) * | 2018-04-11 | 2023-09-19 | 新乡市新倍增自动化设备有限公司 | Device for integrating power control oil circuit of electro-dynamic and static hydraulic actuator |
| CN108408680A (en) * | 2018-05-07 | 2018-08-17 | 宁波太平洋电控系统有限公司 | A kind of discharge equipment of VVT actuators |
| CN110745765A (en) * | 2019-11-19 | 2020-02-04 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | A single-port oil injection device for a mud pulse generator and a method of using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107701544B (en) | 2023-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101885307B (en) | Liquid supply vehicle | |
| DE60006761T2 (en) | Improved part load performance of a screw compressor with variable speed | |
| CN103790798B (en) | A kind of high-pressure pump | |
| CN107701544A (en) | Electrohydraulic actuator oiling gas extraction system | |
| CN201925157U (en) | Pressure-circulation antifreeze purifying lubrication system for gas cap at hydraulic head of oilfield fracturing pump | |
| DE102006042918A1 (en) | Pistonless compressor | |
| CN108799807A (en) | A kind of bearing self-lubricate and degras collection system | |
| CN104930002B (en) | Hydraulic synchronous motor type hydraulic control console | |
| CN203835653U (en) | High-pressure air pump | |
| CN207526813U (en) | Electrohydraulic actuator oiling exhaust system | |
| CN108019280A (en) | Engine lubrication system with anti-siphon means | |
| CN107289273A (en) | A kind of automatic gear-box is changed oil mechanism | |
| CN201712524U (en) | Liquid feed vehicle | |
| CN207268374U (en) | A kind of automatic gear-box is changed oil mechanism | |
| CN107218099A (en) | High-power diesel engine engine oil pressure control method | |
| CN206972886U (en) | Oil jet lubrication system for large-size ball mill gear ring | |
| CN205327887U (en) | Oily automatic discharge system is amassed in vacuum | |
| DE102008051129A1 (en) | Pump for pumping fluid in internal-combustion engine, has drive shaft of pump connected together with another pump in fluid container having fluid | |
| CN204284088U (en) | A kind of depassing unit of marine low speed diesel engine hydraulic cylinder unit | |
| CN206522238U (en) | A kind of hydraulic end of plunger pump lubricating and sealing device | |
| CN209163900U (en) | A kind of oil filtration unit module opposed using double loop | |
| CN206409466U (en) | A kind of repairing of hydraulic test bench and Control ＆ Protective | |
| CN203584968U (en) | Filter cartridge oil discharging device used in the replacement of large-flow filter element of thin oil station | |
| CN207212827U (en) | With simultaneously to oil filtrating and the portable detection system of cleannes detection function | |
| CN203335173U (en) | Oil-gas separation supercharging device of Stirling engine |
Legal Events
| 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |