CN106246632B - The spud leg fast lifting hydraulic circuit of hydraulic bolt formula jacking system - Google Patents
The spud leg fast lifting hydraulic circuit of hydraulic bolt formula jacking system Download PDFInfo
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- CN106246632B CN106246632B CN201610827256.9A CN201610827256A CN106246632B CN 106246632 B CN106246632 B CN 106246632B CN 201610827256 A CN201610827256 A CN 201610827256A CN 106246632 B CN106246632 B CN 106246632B
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- valve
- hydraulic
- hoist cylinder
- cylinder group
- circuit
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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
- 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
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
- E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
- E02B17/0809—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering the equipment being hydraulically actuated
-
- 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
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
- F15B2013/004—Cartridge 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
- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
- F15B2013/0448—Actuation by solenoid and permanent magnet
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20576—Systems with pumps with multiple pumps
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to a kind of spud leg fast lifting hydraulic circuit of hydraulic bolt formula jacking system, including motor, hydraulic pump, electromagnetic relief valve, hoist cylinder group, the hoist cylinder group has rod chamber oil circuit and rodless cavity oil circuit, electromagnetic relief valve is connected between the rod chamber oil circuit and rodless cavity oil circuit and forms differential regenerative circuit, the differential quick motion of hoist cylinder group is realized, improves the speed of lifting spud leg.The hydraulic lifting loop that the present invention uses, when lifting spud leg, differential regenerative circuit will be formed between hoist cylinder group rod chamber oil circuit and hoist cylinder group rodless cavity oil circuit, improves the speed of lifting spud leg, the ability for playing hydraulic circuit is maximized, shortens lifting platform total time.
Description
Technical field
The present invention relates to a kind of hydraulic bolt formula jacking system, especially a kind of liquid for hydraulic bolt formula jacking system
Push back road.
Background technology
Hydraulic bolt formula jacking system is applied to the platform that need to frequently lift and rate request is higher.The liter of its hydraulic system
Dropping back to road includes the parts such as hydraulic oil source, lifting valve group, hoist cylinder group, and hydraulic oil source is real by controlling lifting valve group magnetic valve
Existing lifting action.
In existing jacking system hydraulic lifting loop, when hoist cylinder group piston rod stretches out, hydraulic oil source fluid enters
Hoist cylinder group rodless cavity, hoist cylinder group rod chamber fluid oil return box, the maximum speed of stretching out of hoist cylinder group piston rod depend on
In current hydraulic oil source flux and lifting oil, the area ratio of cylinder group rodless cavity；When hoist cylinder group piston rod is retracted, hydraulic oil
Source fluid enters hoist cylinder group rod chamber, hoist cylinder group rodless cavity fluid oil return box, the maximum contracting of hoist cylinder group piston rod
Return the area ratio that speed depends on current hydraulic oil source flux and hoist cylinder group rod chamber.When system typically presses hoistable platform
The maximum speed of stretching out of hoist cylinder group piston rod corresponds to maximum stream flow needed for loop to determine elevating loop hydraulic pump specification, lifts
Maximal rate when spud leg speed is hydraulic pump delivery fuel feeding, usually slightly larger than hoistable platform speed；System installed power root
According to peaceful, drop platform, rise that spud leg, drop spud leg, the different operating modes such as ballast are lower to consume peak power determination.
Current ocean development is constantly pushing deep-sea to, and the platform operations depth of water is continuously increased, and directly increases system lifting column
Time needed for leg operating mode.Using existing hydraulic lifting circuit type, if wanting to accelerate the speed of lifting spud leg, can only additionally increase
Big hydraulic oil source flow, corresponding all elements, annex specification all will increases.If still use existing hydraulic lifting circuit type
Spud leg lifting action is realized, as the platform operations depth of water is continuously increased, the substantial increase of lifting platform total time will be caused.
The content of the invention
In order to shorten lifting spud leg holding time, the utilization rate of hydraulic circuit ability is improved, accelerates the speed of lifting spud leg,
The present invention provides a kind of spud leg fast lifting hydraulic circuit of hydraulic bolt formula jacking system, using the hydraulic lifting loop from
Lift-type platform, lifting spud leg speed faster, effectively reduce the total time of lifting spud leg.
To achieve the above object, the technical scheme is that：A kind of spud leg of hydraulic bolt formula jacking system quickly rises
Hydraulic circuit drops, including motor, hydraulic pump, electromagnetic relief valve, hoist cylinder group, the hoist cylinder group have rod chamber oil circuit
With rodless cavity oil circuit, electromagnetic relief valve is connected between the rod chamber oil circuit and rodless cavity oil circuit and forms differential regenerative circuit, it is real
The differential quick motion of existing hoist cylinder group, improves the speed of lifting spud leg, shortens lifting platform total time.
The hydraulic pump oil inlet is connected with fuel tank, and hydraulic pump oil-out passes through check valve and the first electromagnetic relief valve and height
Filter is pressed through to be connected；High pressure filter outlet is connected with the first O-shaped function three-position four-way valve, the second O-shaped function three-position four-way valve；
First O-shaped the function three-position four-way valve and the second electromagnetic relief valve, shuttle valve, guide's hydraulic fluid port of balanced valve, hoist cylinder group have bar
Chamber oil circuit is connected；First O-shaped function three-position four-way valve is also connected with the second O-shaped function three-position four-way valve, the second O-shaped function three
Four-way valve is connected by balanced valve with the rodless cavity oil circuit of hoist cylinder group；Second electromagnetic relief valve passes through balanced valve and lifting oil
The rodless cavity oil circuit of cylinder group is connected.
The hoist cylinder group includes multiple hoist cylinders and cylinder ports valve group parallel with one another.The motor and hydraulic pump
At least two sets.The balanced valve is made up of multiple balanced valve parallel connections.Two O-shaped function three-position four-way valves are patrolled by plug-in
Valve is collected to combine.
The beneficial effects of the invention are as follows：
The hydraulic lifting loop that the present invention uses, when lifting spud leg, by hoist cylinder group rod chamber oil circuit and
Differential regenerative circuit is formed between hoist cylinder group rodless cavity oil circuit, improves the speed of lifting spud leg, maximizes hair
The ability of hydraulic circuit is waved, shortens lifting platform total time.
Brief description of the drawings
Fig. 1 is the spud leg fast lifting hydraulic circuit diagram of the hydraulic bolt formula jacking system of the present invention；
Fig. 2 is the oil supply system figure of the spud leg fast lifting hydraulic circuit of the hydraulic bolt formula jacking system of the present invention.
Embodiment
Below in conjunction with accompanying drawing 1, Fig. 2, the specific embodiment of the present invention is described in further detail.
Such as Fig. 1, shown in 2, the present invention provides a kind of spud leg fast lifting hydraulic pressure applied to hydraulic bolt formula jacking system
Loop.This hydraulic circuit includes：Motor 1, hydraulic pump 2, check valve 3, the first electromagnetic relief valve 4, high pressure filter 5, cooler
6th, return filter 7, fuel tank 8, the first O-shaped function three-position four-way valve 9, the 2nd 0 type function three-position four-way valve 10, the second electromagnetism overflow
Flow valve 11, shuttle valve 12, balanced valve 13, hoist cylinder group 14.
In the present embodiment, the oil inlet of hydraulic pump 2 is connected with fuel tank 8, and the oil-out of hydraulic pump 2 is connected with the import of check valve 3；It is single
Export to valve 3 and be connected with the A mouths of the first electromagnetic relief valve 4, the P mouths of high pressure filter 5；The T mouths and the first O of high pressure filter 5
The P mouths of type function three-position four-way valve 9, the P mouths of the 2nd 0 type function three-position four-way valve 10 are connected；First O-shaped function 3-position 4-way
The A mouths of the A mouths of valve 9 and the second electromagnetic relief valve 11,121 mouthfuls of shuttle valve 12, the guide hydraulic fluid port X mouths of balanced valve 13, hoist cylinder group
14 rod chamber oil circuit is connected；The B of the B mouths of first O-shaped function three-position four-way valve 9 and the second O-shaped function three-position four-way valve 10
Mouth, the B mouths of the second electromagnetic relief valve 11,123 mouthfuls of shuttle valve 12, the A mouths of balanced valve 13 are connected；The elder generation of second electromagnetic relief valve 11
1 22 mouthfuls of oil diverting port X mouths and shuttle valve 12 are connected；The B mouths of balanced valve 13 are connected with the rodless cavity oil circuit of hoist cylinder group 14；Second
The T mouths of guide's drain tap Y mouths of electromagnetic relief valve 11 and the first O-shaped function three-position four-way valve 9, the 2nd 0 type function 3-position 4-way
The T mouths of valve 10, the B mouths of the first electromagnetic relief valve 4, the hot oil inlet of cooler 6 are connected；The cold oil of cooler 6 exports and oil return filter
The entrance of device 7 is connected；The outlet of oil return cooler 7 is connected with fuel tank 8；Hoist cylinder group 14 includes multiple hoist cylinders parallel with one another
With cylinder ports valve group；Balanced valve 13 can use multiple balanced valves in parallel according to real system flow；Motor 1 and hydraulic pump 2 are at least
For two sets.
In Fig. 1, after starting motor 1, the first electromagnetic relief valve 4 must be electric, and loop starts to build pressure, when loop reaches rated pressure
Afterwards, system possesses operation condition.Specific action control is referring to Fig. 2.
Peaceful operating mode：At peaceful, the electromagnet DT2 of the one 0 type function three-position four-way valve 9 obtains electric, pressure oil flow direction
The B mouths of one 0 type function three-position four-way valve 9, the rodless cavity oil circuit of hoist cylinder group 14 is entered by balanced valve 13；Hoist cylinder group
14 rod chamber oil circuit fluid flow to the T mouth oil returns of the first O-shaped function three-position four-way valve 9.During backhaul, the one 0 type function three four
The electromagnet DT3 of port valve 9 obtains electric, and pressure oil flows to the A mouths of the first O-shaped function three-position four-way valve 9, has bar into hoist cylinder group 14
Chamber oil circuit；Hoist cylinder group 14 after balanced valve 13 reversely throttling, flows to the one 0 type function three four without stalk chamber oil circuit fluid
The T mouth oil returns of port valve 9.
When dropping platform, the electromagnet DT3 of the one 0 type function three-position four-way valve 9 obtains electric, and pressure oil flows to the one 0 type function three
The A mouths of position four-way valve 9, into the rod chamber oil circuit of hoist cylinder group 14；The rodless cavity oil circuit fluid of hoist cylinder group 14 is through overbalance
Valve 13 reversely after throttling, flows to the T mouth oil returns of the first O-shaped function three-position four-way valve 9.During backhaul, the second O-shaped function 3-position 4-way
The electromagnet DT4 of valve 10, the electromagnet DT6 of the second electromagnetic relief valve 11 obtain electric, and pressure oil flows to the second O-shaped function three-position four-way valve 10
B mouths, pass through balanced valve 13 and enter the rodless cavity oil circuit of hoist cylinder group 14；The rod chamber oil circuit fluid of hoist cylinder group 14 is by the
Two electromagnetic relief valves 11（Directly connect）Enter the rodless cavity oil circuit of hoist cylinder group 14 afterwards, form differential regenerative circuit.
When rising spud leg, the electromagnet DT3 of the one 0 type function three-position four-way valve 9 obtains electric, and pressure oil flows to the first O-shaped function three
The A mouths of position four-way valve 9, into the rod chamber oil circuit of hoist cylinder group 14；The rodless cavity oil circuit fluid of hoist cylinder group 14 is through overbalance
Valve 13 reversely after throttling, flows to the T mouth oil returns of the first O-shaped function three-position four-way valve 9.During backhaul, the second O-shaped function 3-position 4-way
The electromagnet DT4 of valve 10, the electromagnet DT6 of the second electromagnetic relief valve 11 obtain electric, and pressure oil flows to the second O-shaped function three-position four-way valve
10 B mouths, the rodless cavity oil circuit of hoist cylinder group 14 is entered by balanced valve 13；The rod chamber oil circuit fluid of hoist cylinder group 14 passes through
Second electromagnetic relief valve 11（Directly connect）Enter the rodless cavity oil circuit of hoist cylinder group 14 afterwards, form regeneration differential circuit.
When dropping spud leg, the second O-shaped electromagnet DT4 of function three-position four-way valve 10, the second electromagnetic relief valve 11
Electromagnet DT7 obtains electric, and pressure oil flows to the B mouths of the second O-shaped function three-position four-way valve 10, is entered by balanced valve 13
The rodless cavity oil circuit of hoist cylinder group 14；The rod chamber oil circuit fluid of hoist cylinder group 14 is laggard by the overflow of the second electromagnetic relief valve 11
Enter the rodless cavity oil circuit of hoist cylinder group 14, form regeneration differential circuit.During backhaul, the first O-shaped electromagnet of function three-position four-way valve 9
DT3 obtains electric, and pressure oil flows to the A mouths of the first O-shaped function three-position four-way valve 9, into the rod chamber oil circuit of hoist cylinder group 14；Lifting
The rodless cavity oil circuit fluid of oil cylinder group 14 flows to the T mouths of the first O-shaped function three-position four-way valve 9 after balanced valve 13 reversely throttling
Oil return.
The core of the present invention is realized by controlling the second electromagnetic relief valve 11 between the two cavity oil road of hoist cylinder group 14
The differential quick motion of hoist cylinder group 14.Its protection domain is not limited to above-described embodiment, it is every in the scope of the present invention and
Change, equivalent substitution, the deformation made in spirit, all should be in the range of the claim and equivalent technologies of the present invention.
Claims (4)
1. a kind of spud leg fast lifting hydraulic circuit of hydraulic bolt formula jacking system, including motor (1), hydraulic pump (2), electromagnetism
Overflow valve, hoist cylinder group (14), it is characterised in that：The hoist cylinder group (14) has rod chamber oil circuit and rodless cavity oil
Road, electromagnetic relief valve is connected between the rod chamber oil circuit and rodless cavity oil circuit and forms differential regenerative circuit, realizes hoist cylinder
The differential quick motion of group (14), improves the speed of lifting spud leg, shortens lifting platform total time；Hydraulic pump (2) oil-feed
Mouth is connected with fuel tank (8), and hydraulic pump (2) oil-out passes through check valve (3) and the first electromagnetic relief valve (4) and high pressure filter
(5) it is connected；High pressure filter (5) exports and the first O-shaped function three-position four-way valve (9), the second O-shaped function three-position four-way valve (10)
It is connected；First O-shaped function three-position four-way valve (9) and the second electromagnetic relief valve (11), shuttle valve (12), the guide oil of balanced valve (13)
Mouth, the rod chamber oil circuit of hoist cylinder group (14) are connected；First O-shaped function three-position four-way valve (9) also with the second O-shaped function three
Four-way valve (10) connects, and the second O-shaped function three-position four-way valve (10) is by balanced valve (13) with hoist cylinder group (14) without bar
Chamber oil circuit is connected；Second electromagnetic relief valve (11) is connected by balanced valve (13) with the rodless cavity oil circuit of hoist cylinder group (14)；
The hoist cylinder group (14) includes multiple hoist cylinders and cylinder ports valve group parallel with one another.
2. the spud leg fast lifting hydraulic circuit of hydraulic bolt formula jacking system according to claim 1, it is characterised in that：
The motor (1) and hydraulic pump (2) are at least two sets.
3. the spud leg fast lifting hydraulic circuit of hydraulic bolt formula jacking system according to claim 1, it is characterised in that：
The balanced valve (13) is made up of multiple balanced valve parallel connections.
4. the spud leg fast lifting hydraulic circuit of hydraulic bolt formula jacking system according to claim 1, it is characterised in that：
Two O-shaped function three-position four-way valves are combined by plug-in logical valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610827256.9A CN106246632B (en) | 2016-09-18 | 2016-09-18 | The spud leg fast lifting hydraulic circuit of hydraulic bolt formula jacking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610827256.9A CN106246632B (en) | 2016-09-18 | 2016-09-18 | The spud leg fast lifting hydraulic circuit of hydraulic bolt formula jacking system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106246632A CN106246632A (en) | 2016-12-21 |
| CN106246632B true CN106246632B (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610827256.9A Active CN106246632B (en) | 2016-09-18 | 2016-09-18 | The spud leg fast lifting hydraulic circuit of hydraulic bolt formula jacking system |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207961098U (en) * | 2017-02-21 | 2018-10-12 | 深圳市凯卓立液压设备股份有限公司 | A kind of quickly lifting hydraulic device |
| CN108569655B (en) * | 2017-09-15 | 2020-04-28 | 中国国际海运集装箱(集团)股份有限公司 | Lifting hydraulic control system, control method and boarding bridge |
| CN108488112B (en) * | 2018-05-16 | 2023-08-04 | 南通润邦重机有限公司 | Differential loop of large-flow hydraulic system and control method thereof |
| CN109322882A (en) * | 2018-12-04 | 2019-02-12 | 大连华锐重工集团股份有限公司 | A kind of hydraulic power unit and its control method of bolt-type ocean lifting platform |
| CN109973449B (en) * | 2019-03-01 | 2020-07-21 | 武汉船用机械有限责任公司 | Hydraulic control system of lifting platform |
| CN110529450A (en) * | 2019-08-14 | 2019-12-03 | 杭州国辰正域科技有限公司 | Big flow low power consumption high-precision hydraulic speed regulation system based on differential principle before valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3418261A1 (en) * | 1984-05-17 | 1985-11-21 | Robert Bosch Gmbh, 7000 Stuttgart | Valve arrangement for controlling and monitoring the working pressure of a hydraulic consumer |
| CN202097266U (en) * | 2011-05-04 | 2012-01-04 | 济南铸造锻压机械研究所有限公司 | Electric hydraulic control device of numerical control flat punching machine |
| CN103122879A (en) * | 2013-02-21 | 2013-05-29 | 武汉船用机械有限责任公司 | Hydraulic plug pin type oil cylinder jacking system |
| CN103423221A (en) * | 2013-07-24 | 2013-12-04 | 三一汽车起重机械有限公司 | Multi-oil-cylinder sequence telescopic hydraulic system and engineering machine |
| CN204828104U (en) * | 2015-07-03 | 2015-12-02 | 郑州大学 | Four rollers grind immediately uses hydraulic system |
| DE102014224057A1 (en) * | 2014-11-26 | 2016-06-02 | Robert Bosch Gmbh | Hydraulic control |
| CN206159154U (en) * | 2016-09-18 | 2017-05-10 | 上海衡拓船舶设备有限公司 | Hydraulic pressure bolt formula operating system's spud leg hydraulic circuit that goes up and down fast |
-
2016
- 2016-09-18 CN CN201610827256.9A patent/CN106246632B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3418261A1 (en) * | 1984-05-17 | 1985-11-21 | Robert Bosch Gmbh, 7000 Stuttgart | Valve arrangement for controlling and monitoring the working pressure of a hydraulic consumer |
| CN202097266U (en) * | 2011-05-04 | 2012-01-04 | 济南铸造锻压机械研究所有限公司 | Electric hydraulic control device of numerical control flat punching machine |
| CN103122879A (en) * | 2013-02-21 | 2013-05-29 | 武汉船用机械有限责任公司 | Hydraulic plug pin type oil cylinder jacking system |
| CN103423221A (en) * | 2013-07-24 | 2013-12-04 | 三一汽车起重机械有限公司 | Multi-oil-cylinder sequence telescopic hydraulic system and engineering machine |
| DE102014224057A1 (en) * | 2014-11-26 | 2016-06-02 | Robert Bosch Gmbh | Hydraulic control |
| CN204828104U (en) * | 2015-07-03 | 2015-12-02 | 郑州大学 | Four rollers grind immediately uses hydraulic system |
| CN206159154U (en) * | 2016-09-18 | 2017-05-10 | 上海衡拓船舶设备有限公司 | Hydraulic pressure bolt formula operating system's spud leg hydraulic circuit that goes up and down fast |
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| CN106246632A (en) | 2016-12-21 |
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