CN110528619A - Middle large-tonnage electric loader fluid pressure line work system - Google Patents
Middle large-tonnage electric loader fluid pressure line work system Download PDFInfo
- Publication number
- CN110528619A CN110528619A CN201910846019.0A CN201910846019A CN110528619A CN 110528619 A CN110528619 A CN 110528619A CN 201910846019 A CN201910846019 A CN 201910846019A CN 110528619 A CN110528619 A CN 110528619A
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- Prior art keywords
- gear pump
- valve
- outlet end
- electric loader
- fluid pressure
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2289—Closed circuit
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2292—Systems with two or more pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention is suitable for electric loader technical field, provides a kind of middle large-tonnage electric loader fluid pressure line work system, including oil supply structure, and oil supply structure includes the first gear pump, second gear pump and third gear pump being connected to the motor respectively；The arrival end of first gear pump connects gearbox, and outlet end is separately connected speed change valve, unloading valve and pilot valve, and pilot valve connects operating valve；The arrival end of second gear pump and third gear pump is all connected with hydraulic oil container, the outlet end of second gear pump connects pressure-gradient control valve, the outlet end connection diverter and operating valve of pressure-gradient control valve, the outlet end connection of diverter turns oil cylinder, the outlet end of third gear pump connects dump ram, elevating ram and hydraulic oil container through operating valve.Whereby, the present invention can be pumped directly by motor-driven gear and complete work, reduced noise, improved the comfort of working environment；Energy can be saved simultaneously, and can reduce environmental.
Description
Technical field
The present invention relates to electric loader technical field more particularly to a kind of middle large-tonnage electric loader fluid pressure line works
Make system.
Background technique
The key operation mode of loading machine has spading operation and loading operation, and for high-efficient homework, loading machine needs to carry out
Bucket, lifting, discharging and decline are continually received, these movements are all by HYDRAULIC CONTROL SYSTEM and to realize.
Fluid pressure line work system in the prior art mostly uses internal combustion engine, the power drive system technology of which at
Ripe, engine is generally based on diesel engine, but engine fuel consumption is big, and the energy transmission of mechanical system wastes energy
Source, and pollute environment.
Electric loader is energy saving to be driven by electricity, and environmental is low.But in the prior art about electronic
The research of loader hydraulic line work system is relatively fewer.
In summary, the existing technology has inconveniences and defects in actual use, so it is necessary to be improved.
Summary of the invention
For above-mentioned defect, the purpose of the present invention is to provide a kind of middle large-tonnage electric loader fluid pressure lines to work
System directly pumps the work for completing the hydraulic plumbing system of electric loader by motor-driven gear, reduces noise, improves
The comfort of working environment；Internal combustion engine is replaced with motor simultaneously, the electric energy conversion efficiency between electric elements is higher than mechanical system
Energy transmission, energy can be saved, and can reduce environmental.
To achieve the goals above, the present invention provides a kind of middle large-tonnage electric loader fluid pressure line work system, packet
Oil supply structure is included, the oil supply structure includes the first gear pump, second gear pump and third gear pump being connected to the motor respectively.
First gear pump three oil circuits of connection, first oil circuit include the first gear pump of closed loop connection, become
Fast valve and gearbox；Article 2 oil circuit includes first gear pump, unloading valve and the gearbox of closed loop connection；Article 3
In oil circuit, the arrival end of the first gear pump connects the gearbox, and the outlet end of the first gear pump is sequentially connected elder generation
Pilot valve and operating valve.
The arrival end of the second gear pump connects hydraulic oil container, and the outlet end of the second gear pump is sequentially connected preferentially
Valve and diverter, the diverter control left steering cylinder and right steering cylinder；The outlet end of the pressure-gradient control valve is also connected with third gear
The outlet end of pump, the outlet end of the third gear pump connect operating valve, and the outlet end of the operating valve connects the hydraulic oil
Case, operating valve control tipping bucket cylinder, the first load lifting cylinder and the second load lifting cylinder, described in the arrival end connection of the third gear pump
Hydraulic oil container.
Middle large-tonnage electric loader fluid pressure line work system according to the present invention, it is hydraulic in the Article 2 oil circuit
The pressure of oil is 1.5~2.5Mpa.
Middle large-tonnage electric loader fluid pressure line work system according to the present invention, it is described in the Article 2 oil circuit
The first radiator is also connected between unloading valve and the gearbox.
Middle large-tonnage electric loader fluid pressure line work system according to the present invention, the outlet end of the first gear pump
It is also connected with the first entrance end of pressure selection valve, the outlet end of the pressure selection valve connects the pilot valve.
Middle large-tonnage electric loader fluid pressure line work system according to the present invention, the operating valve and the hydraulic oil
The second radiator and filter are also connected between case.
Middle large-tonnage electric loader fluid pressure line work system according to the present invention, the second of the pressure selection valve enter
Mouth end is also connected with the cavity of resorption oil circuit of first load lifting cylinder or second load lifting cylinder.
Middle large-tonnage electric loader fluid pressure line work system according to the present invention, the first gear pump, the second tooth
The model of wheel pump and third gear pump is respectively: 2020,2063 and 2100.
It is straight by motor the purpose of the present invention is to provide a kind of middle large-tonnage electric loader fluid pressure line work system
Connect driving first gear pump, second gear pump and third gear pump；The outlet end of first gear pump is separately connected speed change valve, off-load
Valve and pilot valve, pilot valve connect operating valve, and the hydraulic oil of first gear pump output controls the elder generation in entire hydraulic system
Pilot valve and operating valve are acted；Second gear pump outlet end connect pressure-gradient control valve, pressure-gradient control valve outlet end connection diverter and
Operating valve, the outlet end connection of diverter turn oil cylinder, and the outlet end of third gear pump is through operating valve connection dump ram, lifting oil
Cylinder and hydraulic oil container, preferentially for diverter, the hydraulic oil of residual flow collaborates second gear pump with the hydraulic oil of third gear pump
Realize that executive component tipping bucket cylinder, load lifting cylinder in oil circuit work by operating valve；Third gear pump by operating valve come
Realize that the executive component tipping bucket cylinder in oil circuit, load lifting cylinder work.In conclusion the beneficial effects of the present invention are: directly logical
The work that motor-driven gear pump completes the hydraulic plumbing system of electric loader is crossed, noise is reduced, improves relaxing for working environment
Adaptive；Internal combustion engine is replaced with motor simultaneously, the electric energy conversion efficiency between electric elements is higher than the energy transmission of mechanical system, i.e.,
Energy can be saved, and can reduce environmental.
Detailed description of the invention
Fig. 1 is fluid pressure line work system structural schematic diagram of the present invention；
In figure: 1- first gear pump, 11- gearbox, 12- unloading valve, 13- speed change valve, 14- pressure selection valve, 15- are first
Pilot valve, the first radiator of 16-；2- second gear pump, 21- hydraulic oil container, 22- pressure-gradient control valve, 23- diverter, 24- left steering cylinder,
25- right steering cylinder；3- third gear pump, 4- motor, 5- operating valve, 51- tipping bucket cylinder, the first load lifting cylinder of 52-, 53- second are lifted
Cylinder, 54- radiator, 55- filter, the first three-position four-way valve of 56-, the second three-position four-way valve of 57-.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing, to the present invention into
Row is further described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit
The fixed present invention.
Referring to Fig. 1, the present invention provides a kind of middle large-tonnage electric loader fluid pressure line work systems, including fuel feeding knot
Structure, oil supply structure include the first gear pump 1, second gear pump 2 and third gear pump 3 being connected respectively with motor 4.
First gear pump 1 is pioneer pump, connects three oil circuits, first oil circuit include closed loop connection first gear pump 1,
Speed change valve 13 and gearbox 11, wherein the arrival end of first gear pump 1 connects gearbox 11, and outlet end connects speed change valve 13, becomes
Fast valve 13 connects gearbox 11；The main function of speed change valve 13 is the shift that gearbox 11 is realized by hydraulic power；First tooth
Wheel pump 1 extracts hydraulic oil from the bottom of gearbox 11, and hydraulic oil enters in speed change valve 13, when the shift for carrying out gearbox 11
When, speed change valve 13 is opened, and pushes clutch open by the pressure of hydraulic oil, while the engagement of gear being pushed to shift gears, then hydraulic
Oil flows back into gearbox 11.
Article 2 oil circuit includes first gear pump 1, unloading valve 12 and the gearbox 11 of closed loop connection, wherein first gear
The arrival end of pump 1 connects gearbox 11, and outlet end connects unloading valve 12, and unloading valve 12 connects gearbox 11 through the first radiator；
The effect of unloading valve 12 mainly controls the pressure of fluid pressure line, by adjusting the pressure adjustment bolt on unloading valve 12, realizes
The size of hydraulic line pressure adjusts；In the present invention, the pressure of fluid pressure line is 1.5~2.5Mpa.Due to 80% in gearbox
Therefore above oil, as a preferred solution, is also connected with all in Article 2 oil circuit between unloading valve 12 and gearbox 11
First radiator 16, the first radiator 16 can reduce the temperature of hydraulic oil and associated workpiece, and that improves associated workpiece uses the longevity
Life, improves the working performance and working efficiency of electric loader.
In Article 3 oil circuit, the arrival end of first gear pump 1 connects gearbox 11, and the outlet end of first gear pump 1 is successively
Connect pilot valve 15 and operating valve 5；First gear pump 1 extracts hydraulic oil from the bottom of gearbox 11, and hydraulic oil enters guide
In valve 15, pilot valve 15 is manually operated by staff, is divided into four movements all around, and under normal circumstances, left and right is one group
It acts, a1 the and b1 interface in corresponding diagram 1, front and back is set, a2 the and b2 interface in corresponding diagram 1, when staff puts
The handle of dynamic pilot valve 15 controls the size that pilot valve 15 is opened according to the size of swing, and the size that pilot valve 15 is opened determines
The size of output pressure, the size of output pressure determine that operating valve 5 opens the size of logical hydraulic fluid port, and the size decision for leading to hydraulic fluid port is fuel-displaced
The size of amount, the size of oil pump capacity determine the work speed of tipping bucket cylinder 51.As a preferred solution, first gear pump 1
Outlet end be also connected with the first entrance end of pressure selection valve 14, the outlet end of pressure selection valve 14 connects pilot valve 15；Pressure
The main function of selector valve 14 be the pressure of hydraulic oil is further constant, to be supplied to the more constant pressure of pilot valve 15,
Accurate manipulation for electric loader.
Second gear pump 2 is steering pump, and the arrival end of second gear pump 2 connects hydraulic oil container 21, and second gear pump 2 goes out
Mouth end is sequentially connected pressure-gradient control valve 22 and diverter 23, and diverter 23 controls left steering cylinder 24 and right steering cylinder 25, pressure-gradient control valve 22
The outlet end of outlet end connection third gear pump 3；Third gear pump 3 is main pump, and the arrival end of third gear pump 3 connects hydraulic oil
Case 21, the outlet end of third gear pump 3 connect operating valve 5, and the outlet end of operating valve 5 connects hydraulic oil container 21, hydraulic oil container 21
Closed loop oil circuit is formed with third gear pump 3, operating valve 5；Operating valve 5 controls tipping bucket cylinder 51, the first load lifting cylinder 52 and the second lifting
Cylinder 53.
The effect of pressure-gradient control valve 22 is to guarantee hydraulic oil in the case where there is steering, and priority of supply diverter 23 is divided into three kinds
Operating condition: 1, when electric loader spin to it is very fast when, the hydraulic oil of second gear pump 2 by pressure-gradient control valve 22 all supplies of CF mouth
Enter in diverter 23, and from the P of diverter 23 mouth, is transported to left steering cylinder 24 and right steering cylinder 25 by A mouthfuls or B mouthfuls
In, so that electric loader is turned to；2, when electric loader suitably spin to when, pressure-gradient control valve 22 is a certain amount of from CF mouthfuls of outputs
Hydraulic oil, guarantee the requirement that electric loader turns to, remaining hydraulic oil by EF mouthfuls and third gear pump 3 hydraulic oil
Interflow supply operating valve 5 carries out electric loader to control tipping bucket cylinder 51, the first load lifting cylinder 52 and the second load lifting cylinder 53
Tipping bucket and lifting, then hydraulic oil is flowed back into again in hydraulic oil container 21；3, when electric loader do not spin to when, hydraulic oil is whole
Collaborated by the EF mouth of pressure-gradient control valve 22 and the hydraulic oil of third gear pump 3, operating valve 5 is supplied, to control tipping bucket cylinder 51, first
Load lifting cylinder 52 and the second load lifting cylinder 53 make electric loader carry out tipping bucket and lifting, and then hydraulic oil flows back into hydraulic oil container again
In 21.
As a preferred solution, the second radiator 54 and filter are also connected between operating valve 5 and hydraulic oil container 21
55, the second radiator 54 can reduce the temperature of hydraulic oil and associated workpiece in fluid pressure line, improve the use of associated workpiece
Service life improves the working performance and working efficiency of electric loader；Filter can effectively filter hydraulic oil, improve
The reliability of loader hydraulic system, reduces failure rate, saves the cost of changing oil of user.
In the present invention, the second entrance end P2 of pressure selection valve 14 is also connected with the first load lifting cylinder 52 or the second load lifting cylinder 53
Cavity of resorption oil circuit；In the present invention, which is the arrival end A2 of operating valve 5, this route is spare oil circuit, main to make
Be electric loader large arm lifting after, if there is failure, the oil circuit can be connected, pass through the oil in load lifting cylinder cavity of resorption
The effect of pressure selection valve 14 makes pilot valve 15 control operating valve 5 and is overhauled so that electric loader large arm be made to fall.
In the present invention, the model of first gear pump 1, second gear pump 2 and third gear pump 3 is respectively: 2020,2063 and
2100, certainly, those skilled in the art can also select the gear pump of other models according to actual needs.
Here is two embodiments of the course of work of the present invention:
For an embodiment, when staff swings the handle of pilot valve 15 to the left manually, a1 mouthfuls of connections at this time, hydraulic oil leads to
A1 mouthfuls are crossed into the first three-position four-way valve 56 in operating valve 5, spool is opened, it is hydraulic in other two gear pump P2 and P3
Oil passes through from open spool, enters in 51 back cavity of tipping bucket cylinder by A1 mouthfuls, realizes and receives bucket movement, ante-chamber in tipping bucket cylinder 51
Hydraulic oil by operating valve B1 mouthful reflux, by the oil return opening of operating valve 5 through radiator 54 and filter 55 to hydraulic oil container
In 21.
Another embodiment, when staff swings forward the handle of pilot valve 15 manually, b2 mouthfuls of connections at this time, hydraulic oil leads to
B2 mouthfuls are crossed into the second three-position four-way valve 57 in operating valve 5, spool is opened, it is hydraulic in other two gear pump P2 and P3
Oil passes through from open spool, enters in 52 ante-chamber of the first load lifting cylinder by B2 mouthfuls, realization lowering action, in load lifting cylinder 52
The hydraulic oil of back cavity arrives by operating valve A2 mouthful reflux, by the oil return opening of operating valve 5 through radiator 54 and filter 53 hydraulic
In fuel tank 21.
In conclusion the present invention passes through motor direct-drive first gear pump, second gear pump and third gear pump；First
The outlet end of gear pump is separately connected speed change valve, unloading valve and pilot valve, and pilot valve connects operating valve, first gear pump output
Hydraulic oil controls pilot valve in entire hydraulic system and operating valve is acted；The outlet end connection of second gear pump is excellent
First valve, the outlet end connection diverter and operating valve of pressure-gradient control valve, the outlet end connection of diverter turn oil cylinder, and third gear pump goes out
Mouthful end through operating valve connection dump ram, elevating ram and hydraulic oil container, second gear pump preferentially for diverter, residual flow
Hydraulic oil collaborate to realize by operating valve with the hydraulic oil of third gear pump executive component tipping bucket cylinder in oil circuit, load lifting cylinder into
Row work；Third gear pump realizes that executive component tipping bucket cylinder, load lifting cylinder in oil circuit work by operating valve.To sum up institute
It states, the beneficial effects of the present invention are: directly pumping the work for completing the hydraulic plumbing system of electric loader by motor-driven gear
Make, reduces noise, improve the comfort of working environment；Internal combustion engine is replaced with motor simultaneously, the electric energy conversion between electric elements
Efficiency is higher than the energy transmission of mechanical system, can save energy, and can reduce environmental.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe
It knows those skilled in the art and makes various corresponding changes and modifications, but these corresponding changes and change in accordance with the present invention
Shape all should fall within the scope of protection of the appended claims of the present invention.
Claims (7)
1. a kind of middle large-tonnage electric loader fluid pressure line work system, which is characterized in that including oil supply structure, the fuel feeding
Structure includes the first gear pump, second gear pump and third gear pump being connected to the motor respectively；
First gear pump three oil circuits of connection, first oil circuit include first gear pump, the speed change valve of closed loop connection
And gearbox；Article 2 oil circuit includes first gear pump, unloading valve radiator and the gearbox of closed loop connection；Third
In oil circuit, the arrival end of the first gear pump connects the gearbox, and the outlet end of the first gear pump is sequentially connected
Pilot valve and operating valve；
The arrival end of second gear pump connects hydraulic oil container, the outlet end of the second gear pump be sequentially connected pressure-gradient control valve and
Diverter, the diverter control left steering cylinder and right steering cylinder；The outlet end of the pressure-gradient control valve is also connected with third gear pump
Outlet end, the outlet end of the third gear pump connect operating valve, and the outlet end of the operating valve connects the hydraulic oil container, institute
Operating valve control tipping bucket cylinder, the first load lifting cylinder and the second load lifting cylinder are stated, the arrival end connection of the third gear pump is described hydraulic
Fuel tank.
2. middle large-tonnage electric loader fluid pressure line work system according to claim 1, which is characterized in that described
In two oil circuits, the pressure of hydraulic oil is 1.5~2.5Mpa.
3. middle large-tonnage electric loader fluid pressure line work system according to claim 2, which is characterized in that described
In two oil circuits, the first radiator is also connected between the unloading valve and the gearbox.
4. middle large-tonnage electric loader fluid pressure line work system according to claim 1, which is characterized in that described
The outlet end of one gear pump is also connected with the first entrance end of pressure selection valve, and the outlet end of the pressure selection valve connects the elder generation
Pilot valve.
5. middle large-tonnage electric loader fluid pressure line work system according to claim 1, which is characterized in that the work
Make to be also connected with the second radiator and filter between valve and the hydraulic oil container.
6. middle large-tonnage electric loader fluid pressure line work system according to claim 1, which is characterized in that the pressure
The second entrance end of power selector valve connects the cavity of resorption oil circuit of first load lifting cylinder or second load lifting cylinder.
7. middle large-tonnage electric loader fluid pressure line work system according to claim 1, which is characterized in that described
The model of one gear pump, second gear pump and third gear pump is respectively: 2020,2063 and 2100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910846019.0A CN110528619B (en) | 2019-09-09 | 2019-09-09 | Hydraulic pipeline working system of medium-large tonnage electric loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910846019.0A CN110528619B (en) | 2019-09-09 | 2019-09-09 | Hydraulic pipeline working system of medium-large tonnage electric loader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110528619A true CN110528619A (en) | 2019-12-03 |
| CN110528619B CN110528619B (en) | 2023-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910846019.0A Active CN110528619B (en) | 2019-09-09 | 2019-09-09 | Hydraulic pipeline working system of medium-large tonnage electric loader |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016085959A1 (en) * | 2014-11-24 | 2016-06-02 | Parker-Hannifin Corporation | System architectures for steering and work functions in a wheel loader |
| CN205742338U (en) * | 2016-05-06 | 2016-11-30 | 厦门厦工机械股份有限公司 | The hydraulic system of wheel loader |
| JP2017180809A (en) * | 2016-03-31 | 2017-10-05 | 株式会社クボタ | Hydraulic system for work machine |
| CN107268703A (en) * | 2017-07-06 | 2017-10-20 | 山东临工工程机械有限公司 | Loader hydraulic system |
| CN210857346U (en) * | 2019-09-09 | 2020-06-26 | 山东中叉重工机械有限公司 | Hydraulic pipeline working system of medium-large tonnage electric loader |
-
2019
- 2019-09-09 CN CN201910846019.0A patent/CN110528619B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016085959A1 (en) * | 2014-11-24 | 2016-06-02 | Parker-Hannifin Corporation | System architectures for steering and work functions in a wheel loader |
| JP2017180809A (en) * | 2016-03-31 | 2017-10-05 | 株式会社クボタ | Hydraulic system for work machine |
| CN205742338U (en) * | 2016-05-06 | 2016-11-30 | 厦门厦工机械股份有限公司 | The hydraulic system of wheel loader |
| CN107268703A (en) * | 2017-07-06 | 2017-10-20 | 山东临工工程机械有限公司 | Loader hydraulic system |
| CN210857346U (en) * | 2019-09-09 | 2020-06-26 | 山东中叉重工机械有限公司 | Hydraulic pipeline working system of medium-large tonnage electric loader |
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| Publication number | Publication date |
|---|---|
| CN110528619B (en) | 2023-07-04 |
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