CN110206789A - A kind of mute hydraulic servo oil source apparatus - Google Patents
A kind of mute hydraulic servo oil source apparatus Download PDFInfo
- Publication number
- CN110206789A CN110206789A CN201910308959.4A CN201910308959A CN110206789A CN 110206789 A CN110206789 A CN 110206789A CN 201910308959 A CN201910308959 A CN 201910308959A CN 110206789 A CN110206789 A CN 110206789A
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- CN
- China
- Prior art keywords
- oil
- servo motor
- mute
- pump
- fuel tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003921 oil Substances 0.000 claims abstract description 114
- 239000002828 fuel tank Substances 0.000 claims abstract description 43
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 230000010354 integration Effects 0.000 claims description 9
- 239000011358 absorbing material Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 5
- 239000003063 flame retardant Substances 0.000 claims description 4
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 239000011496 polyurethane foam Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- -1 poly- ammonia Ester Chemical class 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
-
- 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
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0423—Cooling
-
- 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
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The present invention provides a kind of mute hydraulic servo oil source apparatus, including fuel tank, servo motor pump group, the servo motor pump group is located at the lower section of the fuel tank, the servo motor pump group includes servo motor and pump, the servo motor is connected with the pump, and the fuel tank is connect with the pump by oil pipe.The beneficial effects of the present invention are: the present invention solves the problems, such as to will appear when the servo motor pump group slow-speed of revolution; so that pump can remain to establish vacuum suction and discharge oil when revolving speed is low; from without in pumping without the vacuum dry wear situation of not no hydraulic oil again simultaneously; the service life of effective protection pump, can operate normally under small-large flow.
Description
Technical field
The present invention relates to hydraulic power technical field more particularly to a kind of mute hydraulic servo oil source apparatus.
Background technique
Traditional material is greatly developed with new material and new structure, major colleges and universities, scientific research institutions, new high-tech enterprise etc.
The a large amount of science research and development funds of investment, therefore, the mechanics detection industry of material and structure is also greatly developed, most power
It learns in testing laboratory, especially some large-scale mechanics detection devices are largely all made of hydraulic system as a source of power.Liquid
There is a common fault in pressure oil source, and noise is big, and calorific value is big, and energy consumption is high.
Present most technology is that selection is immersed in hydraulic system power source stepper motor pump group in hydraulic oil, plays drop
It makes an uproar the effect of damping and heat dissipation, the method advantage is obvious, but having a defect is that maintenance is fairly cumbersome, once going wrong, is not allowed
Where easily investigation goes wrong, needs entire motor pump group all to split out carry out malfunction elimination, the four of hydraulic oil are caused when splitting out
Place's trickling, causes ground wet and slippery, the oil sources big for some flows, motor pump group weighs hundreds of kilograms, and lifting is not easy, and is easy to make
It is time-consuming and laborious at security risk.
Also useful servo motor pump group, servo motor pump group energy-saving effect is good, noise wants low with respect to stepping electric-motor pump group
Some, servo motor pump group is that there is no problem, but servo motor pump group has a critical defect in small flow in big flow, conventional
Gear pump, vane pump etc. have a minimum speed requirement because servo-system has a feedback function, when the stream of hydraulic system
When measuring low, feedback signal control oil inlet quantity can be issued, the low revolving speed namely pumped of oil inlet quantity is low, and the oil suction principle of pump is by interior
The variation of chamber volume in portion's structure and what the oil suction and oil extraction generated was determined, chamber volume becomes larger as oil suction, become smaller as oil extraction,
Becoming larger suddenly makes inside produce moment vacuum, and oil liquid has been pressed into oil sucting cavity by vacuum (atmospheric pressure), this is oil suction principle
And oil-absorbing process, in this process, the formation of vacuum with foundation be it is related with revolving speed, revolving speed gets over the generation of condition of high vacuum degree just
It is easier, on the contrary it is just smaller, and as soon as revolving speed is as low as the limit, vacuum be can not form, and without vacuum, oil would not be sucked in,
Oil cannot suck the idle running to be easy to cause pump, and then wear, so, the feedback function of servo-system is easy general in low discharge
Rate causes the damage of pump group.
Summary of the invention
The present invention provides a kind of mute hydraulic servo oil source apparatus, including fuel tank, servo motor pump group, the servo electricity
Pump group is located at the lower section of the fuel tank, and the servo motor pump group includes servo motor and pump, the servo motor with it is described
Pump is connected, and the fuel tank is connect with the pump by oil pipe.
As a further improvement of the present invention, the pump is mute gear pump, and the mute gear pump and servo motor are logical
It crosses shaft coupling to link together, the inlet port of mute gear pump is connect by oil pipe with fuel tank.
As a further improvement of the present invention, the servo motor pump group includes Hydraulic integration plate, the row of mute gear pump
Hydraulic fluid port is connect by high-pressure oil pipe with Hydraulic integration plate, equipped with check valve, filter, three-level pressure regulator valve, storage on Hydraulic integration plate
Can device, by the mute gear pump be drawn through come hydraulic oil after check valve, filter, three-level pressure regulator valve and accumulator again
Executing agency is supplied by oil outlet, the hydraulic oil that executing agency returns is back to fuel tank by oil return opening.
As a further improvement of the present invention, the fuel tank is equipped with oil filler, is equipped with liquid level sensor on the fuel tank
And temperature sensor.
As a further improvement of the present invention, which includes water-cooled body, the water cooling
But mechanism includes cooling electromechanical pump group, cooling oil inlet pipe, cooling oil return pipe, water cooler, and the water cooler is equipped with cooler
Water inlet and cooler water return outlet, the cooling electromechanical pump group is connect by the cooling oil inlet pipe with the fuel tank, described cold
But the oil outlet of motor pump group is connect with the oil inlet of the servo motor, and the oil outlet of the servo motor and the water are cooling
The oil inlet of device connects, and the oil outlet of the water cooler is connect by the cooling oil return pipe with the fuel tank, the cooling
The water inlet and water return outlet and cooling tower of device form water-cooling system.
As a further improvement of the present invention, which further includes oil sources frame, the oil sources
Frame is the cavity with opening, and fuel tank is mounted on the upper surface of oil sources frame, and the servo motor pump group is installed on the oil sources
Lower portion, the aperture position of the oil sources frame are equipped with door, and the oil sources frame inner surface and/or door inner surface are equipped with
Sound-absorbing material.
As a further improvement of the present invention, the sound-absorbing material is lightweight, sound-absorbing, heat-insulated, fire-retardant, etch-proof poly- ammonia
Ester foam sound-absorbing material.
As a further improvement of the present invention, which further includes Oil-source control cabinet, oil sources control
Cabinet processed is installed on above the oil sources frame.
As a further improvement of the present invention, the servo motor pump group includes motor pump bracket, the servo motor and institute
It states pump and links together and be mounted on motor pump bracket, the motor pump bracket is mounted on the bottom plate of oil sources frame.
The beneficial effects of the present invention are: the present invention solves the problems, such as to will appear when the servo motor pump group slow-speed of revolution, so that
Pump can remain to establish vacuum suction and discharge oil when revolving speed is low, without the vacuum not dry grinding of hydraulic oil again simultaneously out of without pump
Damage situation, the service life of effective protection pump, can operate normally under small-large flow.
Detailed description of the invention
Fig. 1 is axis surveys view of the invention；
Fig. 2 is that the rear optical axis of the invention surveys view.
Specific embodiment
As shown in Figure 1, 2, the invention discloses a kind of mute hydraulic servo oil source apparatus, including fuel tank 10, servo motor
Pump group, the servo motor pump group are located at the lower section of the fuel tank 10, and the servo motor pump group includes servo motor 2 and pumps,
The servo motor 2 is connected with the pump, and the fuel tank 10 is connect with the pump by oil pipe.
Fuel tank 10 is provided with hydraulic oil, and when required flow is small, servo motor 2, which issues signal, reduces the revolving speed of pump,
Because fuel tank 10 is on the top of servo motor pump group, when revolution speed reduces, in pump and in oil pipe because the gravity of hydraulic oil still
Certain pressure so is had, this pressure makes pump that can remain to establish vacuum suction and discharge oil when revolving speed is low, from without nothing in pumping
The vacuum dry wear situation of not no hydraulic oil again simultaneously, the service life of effective protection pump.
The lower section that servo motor pump group of the present invention is located at fuel tank 10 includes: that servo motor pump group is located at fuel tank 10
Underface, alternatively, servo motor pump group is located at the oblique underface of fuel tank 10；The position of servo motor pump group and fuel tank 10, as long as
It can guarantee that the gravity when revolution speed reduces, in pump and in oil pipe because of hydraulic oil still suffers from certain pressure.
The servo motor pump group includes Hydraulic integration plate 20, and the pump is mute gear pump 3, the mute gear pump 3
It is linked together with servo motor 2 by shaft coupling, the inlet port of mute gear pump 3 is connect by oil pipe with fuel tank 10, mute
The oil discharge outlet of gear pump 3 is connect by high-pressure oil pipe with Hydraulic integration plate 20, equipped with check valve 8, filtering on Hydraulic integration plate 20
Device 7, three-level pressure regulator valve 6, accumulator 5, by mute gear pump 3 be drawn through come hydraulic oil by check valve 8, filter 7, three-level
Executing agency is supplied by oil outlet 17 again after pressure regulator valve 6 and accumulator 5, the hydraulic oil that executing agency returns passes through oil return opening 16
It is back to fuel tank 10.
The fuel tank 10 is equipped with oil filler 13, is equipped with liquid level sensor 11 and temperature sensor 12 on the fuel tank 10.
The mute hydraulic servo oil source apparatus includes water-cooled body, and the water-cooled body includes cooling electromechanical pump group
14, cooling oil inlet pipe 21, cooling oil return pipe 22, water cooler 15, the water cooler 15 are equipped with cooler water inlet 19 and cold
But device water return outlet 18, the cooling electromechanical pump group 14 are connect by the cooling oil inlet pipe 21 with the fuel tank 10, the cooling
The oil outlet of motor pump group 14 is connect with the oil inlet of the servo motor 2, the oil outlet of the servo motor 2 and the water cooling
But the oil outlet of the oil inlet connection of device 15, the water cooler 15 connects by the cooling oil return pipe 22 with the fuel tank 10
It connects, the water inlet 19 and water return outlet 18 and cooling tower of the cooler 15 form water-cooling system.
In the present invention, fuel tank 10, servo motor pump group, water-cooled body are three independent systems, water-cooled body
It is a set of individual cooling system, 10 responsible fuel feeding of fuel tank, servo motor pump group is mounted on 10 outside of fuel tank, intermediate there was only oil
Pipe connection only individually need to be checked and be repaired if any one system jam, very convenient.
Servo motor pump group of the invention is further noise reduction, to meet laboratory than stepper motor pump group low noise
The environmental requirement of environment, which further includes oil sources frame 1, and the oil sources frame 1 is with opening
Cavity, fuel tank 10 is mounted on the upper surface of oil sources frame 1, and the servo motor pump group is installed on inside the oil sources frame 1, institute
The aperture position for stating oil sources frame 1 is equipped with door, and 1 inner surface of oil sources frame and/or door inner surface are equipped with lightweight, inhale
Sound, heat-insulated, fire-retardant, etch-proof polyurethane foam sound-absorbing material, it is significant by the noise reduction effect in kind substantially worked it out, it obtains
The consistent favorable comment of major Scientific Research in University Laboratory.
Certainly, for further noise reduction, water-cooled body can also be mounted on inside oil sources frame 1.
The mute hydraulic servo oil source apparatus further includes Oil-source control cabinet 9, and Oil-source control cabinet 9 is installed on the oil sources frame
1 top.
The servo motor pump group includes motor pump bracket 4, and the servo motor 2 links together with the pump and is mounted on electricity
On pump frame 4, the motor pump bracket 4 is mounted on the bottom plate of oil sources frame 1.
Fuel tank 10, servo motor pump group, water-cooled body are independently arranged by the present invention, are occurred in any one equipment
It will not interfere with other equipment when Breakdown Maintenance, while increasing fire-retardant, corrosion-resistant polyurethane foam sound-absorbing inside oil sources frame 1
Material, after shutting door, noise when operation is at 60 decibels hereinafter, it can put in any laboratory or workshop, again
Keep the change a place to cover up, or even is individually for one house of oil sources dynamical system lid for noise reduction.Meanwhile the present invention
It solves the problems, such as to will appear when servo motor pump group minimum speed, can be operated normally under small-large flow.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (9)
1. a kind of mute hydraulic servo oil source apparatus, it is characterised in that: including fuel tank, servo motor pump group, the servo motor
Pump group is located at the lower section of the fuel tank, and the servo motor pump group includes servo motor and pump, the servo motor and the pump
It is connected, the fuel tank is connect with the pump by oil pipe.
2. mute hydraulic servo oil source apparatus according to claim 1, it is characterised in that: the pump is mute gear pump,
The mute gear pump and servo motor are linked together by shaft coupling, and the inlet port of mute gear pump passes through oil pipe and fuel tank
Connection.
3. mute hydraulic servo oil source apparatus according to claim 2, it is characterised in that: the servo motor pump group includes
The oil discharge outlet of Hydraulic integration plate, mute gear pump is connect by high-pressure oil pipe with Hydraulic integration plate, equipped with single on Hydraulic integration plate
To valve, filter, three-level pressure regulator valve, accumulator, by the mute gear pump be drawn through come hydraulic oil by check valve, filtering
Executing agency is supplied by oil outlet again after device, three-level pressure regulator valve and accumulator, the hydraulic oil that executing agency returns passes through oil return
Mouth is back to fuel tank.
4. mute hydraulic servo oil source apparatus according to claim 3, it is characterised in that: the fuel tank is equipped with oil filler,
Liquid level sensor and temperature sensor are installed on the fuel tank.
5. mute hydraulic servo oil source apparatus according to claim 1, it is characterised in that: the mute hydraulic servo oil sources dress
It sets including water-cooled body, the water-cooled body includes cooling electromechanical pump group, cooling oil inlet pipe, cooling oil return pipe, water cooling
Device, the water cooler be equipped with cooler water inlet and cooler water return outlet, the cooling electromechanical pump group by the cooling into
Oil pipe is connect with the fuel tank, and the oil outlet of the cooling electromechanical pump group is connect with the oil inlet of the servo motor, described to watch
The oil outlet for taking motor is connect with the oil inlet of the water cooler, and the oil outlet of the water cooler passes through the cooling oil return
Pipe is connect with the fuel tank, and the water inlet and water return outlet and cooling tower of the cooler form water-cooling system.
6. mute hydraulic servo oil source apparatus according to any one of claims 1 to 5, it is characterised in that: this is mute hydraulic
Hydraulic servo system device further includes oil sources frame, and the oil sources frame is the cavity with opening, and fuel tank is mounted on oil sources frame
Above, the servo motor pump group is installed on the oil sources lower portion, and the aperture position of the oil sources frame is equipped with door, institute
It states oil sources frame inner surface and/or door inner surface is equipped with sound-absorbing material.
7. mute hydraulic servo oil source apparatus according to claim 6, it is characterised in that: the sound-absorbing material be lightweight,
Sound-absorbing, heat-insulated, fire-retardant, etch-proof polyurethane foam sound-absorbing material.
8. mute hydraulic servo oil source apparatus according to claim 6, it is characterised in that: the mute hydraulic servo oil sources dress
Setting further includes Oil-source control cabinet, and Oil-source control cabinet is installed on above the oil sources frame.
9. mute hydraulic servo oil source apparatus according to claim 6, it is characterised in that: the servo motor pump group includes
Motor pump bracket, the servo motor and the pump link together and are mounted on motor pump bracket, and the motor pump bracket is mounted on oil
On the bottom plate of source frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910308959.4A CN110206789A (en) | 2019-04-17 | 2019-04-17 | A kind of mute hydraulic servo oil source apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910308959.4A CN110206789A (en) | 2019-04-17 | 2019-04-17 | A kind of mute hydraulic servo oil source apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110206789A true CN110206789A (en) | 2019-09-06 |
Family
ID=67785476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910308959.4A Pending CN110206789A (en) | 2019-04-17 | 2019-04-17 | A kind of mute hydraulic servo oil source apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110206789A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201456361U (en) * | 2009-06-01 | 2010-05-12 | 宁波创基机械有限公司 | Mute hydraulic power source for plastic-injection molding machine |
| CN102828839A (en) * | 2012-09-14 | 2012-12-19 | 李恒 | Double-fuel oil path control system |
| US20150337877A1 (en) * | 2013-10-18 | 2015-11-26 | Komatsu Ltd. | Work vehicle and control method for same |
| CN204851859U (en) * | 2015-07-10 | 2015-12-09 | 重庆市博平液压机械有限公司 | Servo energy -saving hydraulic station |
| CN106337856A (en) * | 2016-08-31 | 2017-01-18 | 德玛仕电液技术（苏州）有限公司 | Servo hydraulic device |
| CN206299644U (en) * | 2016-10-21 | 2017-07-04 | 东莞市通兴液压科技有限公司 | A kind of electromechanical integration servo-drive fluid pressure type device |
| US20170234338A1 (en) * | 2014-08-06 | 2017-08-17 | Robert Bosch Gmbh | Hydrostatic Drive |
| CN208236819U (en) * | 2018-05-14 | 2018-12-14 | 浙江万丰科技开发股份有限公司 | A kind of hydraulic servo motor driven systems |
| CN109372830A (en) * | 2018-12-12 | 2019-02-22 | 重庆凯瑞汽车试验设备开发有限公司 | Hydraulic servo system device |
| CN210265357U (en) * | 2019-04-17 | 2020-04-07 | 深圳市恩普达工业系统有限公司 | Mute hydraulic servo oil source device |
-
2019
- 2019-04-17 CN CN201910308959.4A patent/CN110206789A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201456361U (en) * | 2009-06-01 | 2010-05-12 | 宁波创基机械有限公司 | Mute hydraulic power source for plastic-injection molding machine |
| CN102828839A (en) * | 2012-09-14 | 2012-12-19 | 李恒 | Double-fuel oil path control system |
| US20150337877A1 (en) * | 2013-10-18 | 2015-11-26 | Komatsu Ltd. | Work vehicle and control method for same |
| US20170234338A1 (en) * | 2014-08-06 | 2017-08-17 | Robert Bosch Gmbh | Hydrostatic Drive |
| CN204851859U (en) * | 2015-07-10 | 2015-12-09 | 重庆市博平液压机械有限公司 | Servo energy -saving hydraulic station |
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| CN206299644U (en) * | 2016-10-21 | 2017-07-04 | 东莞市通兴液压科技有限公司 | A kind of electromechanical integration servo-drive fluid pressure type device |
| CN208236819U (en) * | 2018-05-14 | 2018-12-14 | 浙江万丰科技开发股份有限公司 | A kind of hydraulic servo motor driven systems |
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| Title |
|---|
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Effective date of registration: 20200121 Address after: 518000 1, south of F building, Santou industrial community, Baoan District, Shiyan street, Shiyan street, Shenzhen, Guangdong. Applicant after: Shenzhen NPDA Industrial System Co., Ltd. Applicant after: CHINA RAILWAY BAOJI RAILWAY ELECTRICAL EQUIPMENT CO., LTD. Address before: 518000 1, south of F building, Santou industrial community, Baoan District, Shiyan street, Shiyan street, Shenzhen, Guangdong. Applicant before: Shenzhen NPDA Industrial System Co., Ltd. |