CN106907364A - A kind of closed type hydraulic system of development machine - Google Patents
A kind of closed type hydraulic system of development machine Download PDFInfo
- Publication number
- CN106907364A CN106907364A CN201710306550.XA CN201710306550A CN106907364A CN 106907364 A CN106907364 A CN 106907364A CN 201710306550 A CN201710306550 A CN 201710306550A CN 106907364 A CN106907364 A CN 106907364A
- Authority
- CN
- China
- Prior art keywords
- oil pump
- main oil
- hydraulic fluid
- fluid port
- swash plate
- 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.)
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Links
- 239000003921 oil Substances 0.000 claims abstract description 80
- 239000012530 fluid Substances 0.000 claims abstract description 54
- 239000002828 fuel tank Substances 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 14
- 238000006073 displacement reaction Methods 0.000 claims abstract description 3
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 3
- 230000003749 cleanliness Effects 0.000 claims description 3
- 230000008520 organization Effects 0.000 claims description 2
- 230000018109 developmental process Effects 0.000 claims 4
- 230000033772 system development Effects 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
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- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/22—Synchronisation of the movement of two or more servomotors
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/024—Pressure relief valves
-
- 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
- F15B21/001—Servomotor systems with fluidic control
-
- 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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/02—Releasable fastening devices locking by rotation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of closed type hydraulic system of development machine, and a kind of development machine of this system of application, it is related to coal mine machinery equipment technical field.Main oil pump is two-way variable displacement pump, the first hydraulic fluid port on main oil pump is connected with motor first port, the second hydraulic fluid port on main oil pump is connected with motor second port, leading controller directly connects main oil pump stroking mechanism, the entrance of the first high-pressure overflow valve and the second high-pressure overflow valve connects first hydraulic fluid port and the second hydraulic fluid port of main oil pump respectively, the outlet of the first high-pressure overflow valve and the second high-pressure overflow valve is connected with repairing overflow valve, and repairing overflow valve connects the second fuel tank.Pilot control element is directly connected with main oil pump stroking mechanism, controls main oil pump discharge capacity, and main oil pump is connected by pipeline with motor, and centre throttles without valve, it is to avoid open system restriction loss, reduction energy consumption, reduction reversing impact.The loss of this rating of set is small, and hydraulic oil temperature rise is low, and without the radiating of large volume fuel tank, fuel tank volume only meets repairing, saves the device space and weight.
Description
Technical field
The present invention relates to a kind of closed type hydraulic system of development machine, belong to coal mine machinery equipment technical field.
Background technology
At present, known development machine is all open type hydraulic system, and open system refers to hydraulic pump from fuel tank oil suction, by changing
To valve to hydraulic cylinder or hydraulic motor fuel feeding to drive operating mechanism, the oil return of hydraulic cylinder or hydraulic motor is again through reversal valve oil return
Case.
The open type pump oil absorption that it is used is poor, can only be filtered with a coarse filter between pump and fuel tank, oil
Impurity in case is easily mixed into system, and the load-sensitive valve in open type pump produces failure for precision element is easily contaminated；
Open system power loss is big, and hydraulic oil temperature is raised, it is necessary to bulky fuel tank, and needs to configure radiator, causes
Hydraulic system takes big quantity space, and wastes the energy.
The commutation of operating mechanism is then by means of reversal valve.When reversal valve commutates, in addition to producing hydraulic shock, moving component
Inertia energy translate into heat energy, and raise the temperature of hydraulic oil.
Because the impurity of hydraulic oil is more, temperature is high, reversing impact is big, cause open system component life low.
The content of the invention
Regarding to the issue above, the technical problem to be solved in the present invention is to provide a kind of closed type hydraulic system of development machine.
The closed type hydraulic system of development machine of the invention.It includes leading controller 1, main oil pump stroking mechanism 2, main oil
Pump swash plate 3, slippage pump 4, fine filter 5, the first fuel tank 6, the second fuel tank 6-1, the first check valve 7, the second check valve 8, first
High-pressure overflow valve 9, the second high-pressure overflow valve 10, repairing overflow valve 11, motor 14, motor first port 141, motor second port
142nd, the first hydraulic fluid port 31 and the second hydraulic fluid port 32, main oil pump swash plate 3 are two-way variable displacement pump, the first hydraulic fluid port 31 on main oil pump swash plate 3
Connected with the first port 141 of motor 14, the second hydraulic fluid port 32 on main oil pump swash plate 3 is connected with the second port 142 of motor 14, guide
Control device 1 directly connects main oil pump stroking mechanism 2, and main oil pump stroking mechanism 2 is connected with main oil pump swash plate 3, controls main oil pump
The discharge capacity of swash plate 3, forms volume debugging loop, and the side of main oil pump swash plate 3 is provided with slippage pump 4, the entrance connection of slippage pump 4 the
One fuel tank 6, outlet is provided with fine filter 5, and slippage pump 4 is connected by the first check valve 7 with the first hydraulic fluid port of main oil pump 31, repairing
Pump 4 is connected by the second check valve 8 with the second hydraulic fluid port of main oil pump 32, and the hydraulic oil hence into closed circuit is all filtered by essence
It is oblique that the entrance of device 5, it is ensured that cleanliness of hydraulic oil, the first high-pressure overflow valve 9 and the second high-pressure overflow valve 10 connects main oil pump respectively
First hydraulic fluid port 31 and the second hydraulic fluid port 32 of disk 3, the outlet of the first high-pressure overflow valve 9 and the second high-pressure overflow valve 10 are connected with repairing
Overflow valve 11, it is ensured that system safety, and repairing overflow valve 11 connects the second fuel tank 6-1, limits pipeline maximum working pressure, it is ensured that
Pipeline safety.
Preferably, the described entrance of slippage pump 4 is from the oil suction of the first fuel tank 6, the outlet connection fine filter 5 of slippage pump 4 enters
Mouthful, fine filter 5 export respectively by the first check valve 7 and the second check valve 8 respectively with the first hydraulic fluid port 31 of main oil pump swash plate 3
It is connected with the second hydraulic fluid port 32, to low-pressure side repairing, hydraulic oil is filled into closed hydraulic loop, i.e., when the first of main oil pump swash plate 3
Hydraulic fluid port 31 for it is fuel-displaced when mouthful, the second hydraulic fluid port 32 is low-pressure side, and the second check valve 8 is opened, and slippage pump 4 is to the of main oil pump swash plate 3
The repairing of two hydraulic fluid port 32, the mouth when the second hydraulic fluid port 32 of main oil pump swash plate 3 is fuel-displaced, the first hydraulic fluid port 31 is low-pressure side, and first is unidirectional
Valve 7 is opened, the repairing of the first hydraulic fluid port 31 from slippage pump 4 to main oil pump swash plate 3.
Beneficial effects of the present invention：The drawbacks of it can overcome prior art, reasonable in design is novel, pilot control element
Directly it is connected with main oil pump stroking mechanism, controls main oil pump discharge capacity, main oil pump is connected by pipeline with motor, and centre does not have valve section
Stream, it is to avoid open system restriction loss, reduces energy consumption, reduces reversing impact.
The loss of this rating of set is small, and hydraulic oil temperature rise is low, and without the radiating of large volume fuel tank, fuel tank volume only meets repairing i.e.
Can, save the device space and weight.
Closed type hydraulic system oil-feed improves the cleannes of hydraulic system all by fine filter, reduces hydraulic part failure
Rate, improves component life.
Brief description of the drawings：
For ease of explanation, the present invention is described in detail by following specific implementations and accompanying drawing.
Fig. 1 is the structural representation of specific embodiment one in the present invention；
Fig. 2 is the structural representation of specific embodiment two in the present invention；
Fig. 3 is the structural representation of specific embodiment three in the present invention；
Fig. 4 is the structural representation of specific embodiment four in the present invention；
Reference：Leading controller 1, main oil pump stroking mechanism 2, main oil pump swash plate 3, slippage pump 4, fine filter 5, first
Fuel tank 6, the second fuel tank 6-1, the first check valve 7, the second check valve 8, the first high-pressure overflow valve 9, the second high-pressure overflow valve 10, benefit
Oil-overflow valve 11, motor 14, motor first port 141, motor second port 142, the first hydraulic fluid port 31 and the second hydraulic fluid port 32.
Specific embodiment：
Specific embodiment one:As shown in figure 1, this specific embodiment uses following technical scheme：It is filled comprising pilot control
Put 1, main oil pump stroking mechanism 2, main oil pump swash plate 3, slippage pump 4, fine filter 5, the first fuel tank 6, the second fuel tank 6-1, first
Check valve 7, the second check valve 8, the first high-pressure overflow valve 9, the second high-pressure overflow valve 10, repairing overflow valve 11, motor 14, motor
First port 141, motor second port 142, the hydraulic fluid port 31 of main oil pump swash plate 3 first and the second hydraulic fluid port 32, main oil pump swash plate 3 is double
To variable pump, the first hydraulic fluid port 31 on main oil pump swash plate 3 is connected with the first port 141 of motor 14, and on main oil pump swash plate 3 second
Hydraulic fluid port 32 is connected with the second port 142 of motor 14, and leading controller 1 directly connects main oil pump stroking mechanism 2, main oil pump variable
Mechanism 2 is connected with the swash plate of main oil pump swash plate 3, the discharge capacity of control main oil pump swash plate 3, forms volume debugging loop, main oil pump swash plate
3 sides are provided with slippage pump 4, and the entrance of slippage pump 4 connects the first fuel tank 6, and outlet is provided with fine filter 5, and slippage pump 4 is logical
Cross the first check valve 7 to be connected with the first hydraulic fluid port of main oil pump 31, slippage pump 4 passes through the second check valve 8 and the second hydraulic fluid port of main oil pump 32
Be connected, hence into closed circuit hydraulic oil all by fine filter 5, it is ensured that cleanliness of hydraulic oil, the first high-pressure overflow valve 9
With the first hydraulic fluid port 31 and the second hydraulic fluid port 32 that the entrance of the second high-pressure overflow valve 10 connects main oil pump swash plate 3 respectively, the first high pressure
The outlet of the high-pressure overflow valve 10 of overflow valve 9 and second is connected with repairing overflow valve 11, it is ensured that system safety, and repairing overflow valve 11
The second fuel tank 6-1 is connected, pipeline maximum working pressure is limited, it is ensured that pipeline safety.
Preferably, the described entrance of slippage pump 4 is from the oil suction of the first fuel tank 6, the outlet connection fine filter 5 of slippage pump 4 enters
Mouthful, fine filter 5 export respectively by the first check valve 7 and the second check valve 8 respectively with the first hydraulic fluid port 31 of main oil pump swash plate 3
It is connected with the second hydraulic fluid port 32, to low-pressure side repairing, hydraulic oil is filled into closed hydraulic loop, i.e., when the first of main oil pump swash plate 3
Hydraulic fluid port 31 for it is fuel-displaced when mouthful, the second hydraulic fluid port 32 is low-pressure side, and the second check valve 8 is opened, and slippage pump 4 is to the of main oil pump swash plate 3
The repairing of two hydraulic fluid port 32, the mouth when the second hydraulic fluid port 32 of main oil pump swash plate 3 is fuel-displaced, the first hydraulic fluid port 31 is low-pressure side, and first is unidirectional
Valve 7 is opened, the repairing of the first hydraulic fluid port 31 from slippage pump 4 to main oil pump swash plate 3.
Specific embodiment two:As shown in Fig. 2 this specific embodiment exists with the difference of specific embodiment one
In:Described leading controller 1 is removed, is directly controlled with the second control pressure device b1 by the first control pressure device a1
Stroking mechanism processed 2, so as to control discharge of main pump to change by controlling organization 2, other are constituted and connected mode and specific embodiment party
Formula one is identical.
Specific embodiment three:As shown in figure 3, this specific embodiment exists with the difference of specific embodiment one
In:The outlet of described fine filter 5 is connected with repairing overflow valve 11, and repairing overflow valve 11 is connected with the second fuel tank 6-1, and
Described motor 14 is two or more, and the entrance of two or more motors 14 connects together, and is exported with main oil pump swash plate 3
It is connected, the outlet of two or more motors 14 connects together, and is connected with the entrance of main oil pump swash plate 3.Other compositions and connection side
Formula is identical with specific embodiment one.
Specific embodiment four:As shown in figure 4, this specific embodiment exists with the difference of specific embodiment three
In:It also add motor synchronous valve 15, and two or more motors 14 are connected with motor synchronous valve 15, improve motor synchronous essence
Degree.Other compositions and connected mode are identical with specific embodiment three.
General principle of the invention and principal character and advantages of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not limited to the above embodiments, simply explanation described in above-described embodiment and specification this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent thereof.
Claims (4)
1. a kind of closed type hydraulic system of development machine, it is characterised in that：It includes leading controller (1), main oil pump variable machine
It is structure (2), main oil pump swash plate (3), slippage pump (4), fine filter (5), the first fuel tank (6), the second fuel tank (6-1), first unidirectional
Valve (7), the second check valve (8), the first high-pressure overflow valve (9), the second high-pressure overflow valve (10), repairing overflow valve (11), motor
(14), motor first port (141), motor second port (142), the first hydraulic fluid port (31) and the second hydraulic fluid port (32), main oil pump is oblique
Disk (3) is two-way variable displacement pump, and the first hydraulic fluid port (31) on main oil pump swash plate (3) is connected with motor (14) first port (141), main
The second hydraulic fluid port (32) on oil pump swash plate (3) is connected with motor (14) second port (142), and leading controller (1) directly connects
Logical main oil pump stroking mechanism (2), main oil pump stroking mechanism (2) is connected with main oil pump swash plate (3), control main oil pump swash plate (3) row
Amount, forms volume debugging loop, and main oil pump swash plate (3) side is provided with slippage pump (4), the entrance connection of slippage pump (4) the
One fuel tank (6), outlet is provided with fine filter (5), and slippage pump (4) by the first check valve (7) and the hydraulic fluid port of main oil pump first
(31) it is connected, slippage pump (4) is connected by the second check valve (8) with the hydraulic fluid port of main oil pump second (32), hence into closed circuit
Hydraulic oil all by fine filter (5), it is ensured that cleanliness of hydraulic oil, the first high-pressure overflow valve (9) and the second high-pressure overflow valve
(10) entrance connects first hydraulic fluid port (31) and the second hydraulic fluid port (32) of main oil pump swash plate (3), the first high-pressure overflow valve (9) respectively
Repairing overflow valve (11) is connected with the outlet of the second high-pressure overflow valve (10), it is ensured that system safety, and repairing overflow valve (11)
Connect the second fuel tank (6-1), limit pipeline maximum working pressure, it is ensured that pipeline safety, described slippage pump (4) entrance is from first
Fuel tank (6) oil suction, slippage pump (4) outlet connection fine filter (5) entrance, fine filter (5) outlet is unidirectional by first respectively
Valve (7) and the second check valve (8) are connected with first hydraulic fluid port (31) and the second hydraulic fluid port (32) of main oil pump swash plate (3) respectively, to low
Hydraulic oil, is filled into closed hydraulic loop by pressure side repairing, i.e., when main oil pump swash plate (3) the first hydraulic fluid port (31) for it is fuel-displaced when mouthful,
Second hydraulic fluid port (32) is low-pressure side, and the second check valve (8) is opened, the second hydraulic fluid port (32) from slippage pump (4) to main oil pump swash plate (3)
Repairing, when main oil pump swash plate (3) the second hydraulic fluid port (32) for it is fuel-displaced when mouthful, the first hydraulic fluid port (31) is low-pressure side, the first check valve
(7) open, the first hydraulic fluid port (31) repairing from slippage pump (4) to main oil pump swash plate (3).
2. according to a kind of closed type hydraulic system of the development machine described in claim 1, it is characterised in that：By leading controller
(1) remove, by the direct control variables mechanism (2) of the first control pressure device (a1) and the second control pressure device (b1), from
And pass through controlling organization (2) control discharge of main pump change.
3. according to a kind of closed type hydraulic system of the development machine described in claim 1, it is characterised in that：Described fine filter
(5) outlet is connected with repairing overflow valve (11), and repairing overflow valve (11) is connected with the second fuel tank (6-1), described motor
(14) quantity is two or more, and the entrance of two or more motors (14) connects together, and goes out with main oil pump swash plate (3)
Mouth is connected, and the outlet of two or more motors (14) connects together, and is connected with main oil pump swash plate (3) entrance.
4. according to a kind of closed type hydraulic system of the development machine described in claim 1, it is characterised in that：Described Closed Hydraulic system
System development machine also includes motor synchronous valve (15), and two or more motors (14) are connected with motor synchronous valve (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710306550.XA CN106907364A (en) | 2017-05-04 | 2017-05-04 | A kind of closed type hydraulic system of development machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710306550.XA CN106907364A (en) | 2017-05-04 | 2017-05-04 | A kind of closed type hydraulic system of development machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106907364A true CN106907364A (en) | 2017-06-30 |
Family
ID=59210854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710306550.XA Pending CN106907364A (en) | 2017-05-04 | 2017-05-04 | A kind of closed type hydraulic system of development machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106907364A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524648A (en) * | 2017-08-09 | 2017-12-29 | 太原科技大学 | A kind of closed type energy-saving loop of excavator swing arm |
| CN107605869A (en) * | 2017-09-21 | 2018-01-19 | 太原科技大学 | A kind of oil cylinder cools down hydraulic circuit |
| CN107651588A (en) * | 2017-09-29 | 2018-02-02 | 江苏威和海洋工程设备有限公司 | A kind of hydraulic wireline winch of closed-type cylindrical gearing system |
| CN107654445A (en) * | 2017-09-12 | 2018-02-02 | 太原科技大学 | A kind of repairing cooling circuit of excavator pump control system |
| CN107842537A (en) * | 2017-12-11 | 2018-03-27 | 徐工集团工程机械有限公司 | End cap assembly, hydraulic test and engineering machinery |
| CN109458367A (en) * | 2018-12-28 | 2019-03-12 | 江苏省机械研究设计院有限责任公司 | A kind of hydraulic system for slag breaker |
| CN113939659A (en) * | 2019-04-26 | 2022-01-14 | 丹佛斯动力系统Ii技术有限公司 | Hydraulic circuit architecture with improved operating efficiency |
| CN114263656A (en) * | 2021-11-11 | 2022-04-01 | 中联重科股份有限公司 | Closed hydraulic system and mechanical equipment |
| CN116838660A (en) * | 2023-07-11 | 2023-10-03 | 河南科技大学 | Hydraulic control system for realizing self-feedback of main pump and oil supplementing synchronous variable |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524648A (en) * | 2017-08-09 | 2017-12-29 | 太原科技大学 | A kind of closed type energy-saving loop of excavator swing arm |
| CN107654445A (en) * | 2017-09-12 | 2018-02-02 | 太原科技大学 | A kind of repairing cooling circuit of excavator pump control system |
| CN107605869B (en) * | 2017-09-21 | 2019-04-16 | 太原科技大学 | A kind of cooling hydraulic circuit of oil cylinder |
| CN107605869A (en) * | 2017-09-21 | 2018-01-19 | 太原科技大学 | A kind of oil cylinder cools down hydraulic circuit |
| CN107651588A (en) * | 2017-09-29 | 2018-02-02 | 江苏威和海洋工程设备有限公司 | A kind of hydraulic wireline winch of closed-type cylindrical gearing system |
| CN107842537A (en) * | 2017-12-11 | 2018-03-27 | 徐工集团工程机械有限公司 | End cap assembly, hydraulic test and engineering machinery |
| CN107842537B (en) * | 2017-12-11 | 2024-04-30 | 江苏徐工工程机械研究院有限公司 | End cover assembly, hydraulic equipment and engineering machinery |
| CN109458367A (en) * | 2018-12-28 | 2019-03-12 | 江苏省机械研究设计院有限责任公司 | A kind of hydraulic system for slag breaker |
| CN109458367B (en) * | 2018-12-28 | 2024-02-20 | 江苏省机械研究设计院有限责任公司 | Hydraulic system for slag breaker |
| CN113939659A (en) * | 2019-04-26 | 2022-01-14 | 丹佛斯动力系统Ii技术有限公司 | Hydraulic circuit architecture with improved operating efficiency |
| CN114263656A (en) * | 2021-11-11 | 2022-04-01 | 中联重科股份有限公司 | Closed hydraulic system and mechanical equipment |
| CN116838660A (en) * | 2023-07-11 | 2023-10-03 | 河南科技大学 | Hydraulic control system for realizing self-feedback of main pump and oil supplementing synchronous variable |
| CN116838660B (en) * | 2023-07-11 | 2024-01-30 | 河南科技大学 | Hydraulic control system for realizing self-feedback of main pump and oil supplementing synchronous variable |
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Application publication date: 20170630 |
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