CN205715015U - A kind of hydraulic system possessing supertension fan-out capability - Google Patents
A kind of hydraulic system possessing supertension fan-out capability Download PDFInfo
- Publication number
- CN205715015U CN205715015U CN201620357632.8U CN201620357632U CN205715015U CN 205715015 U CN205715015 U CN 205715015U CN 201620357632 U CN201620357632 U CN 201620357632U CN 205715015 U CN205715015 U CN 205715015U
- Authority
- CN
- China
- Prior art keywords
- oil
- valve
- way valve
- pressure
- supertension
- 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.)
- Expired - Fee Related
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
This utility model relates to a kind of hydraulic system possessing supertension fan-out capability, enters loop including fuel tank, pump, F.F. loop and work.In this utility model, use two three-position four-way valves to complete F.F. loop and work enters the commutation of fluid in loop, flow by one-way throttle valve regulation fluid, supertension fluid is provided for performing oil cylinder by superhigh pressure booster cylinder, it can thus be appreciated that, each parts cooperate and achieve the output of ultra high pressure, and the various pressure transducers and the Pressure gauge that arrange in system can show pressure value intuitively, and can be used in combination with electric-control system, it is automatically stopped pressurization when pressure value exception, after pressure release, each parts are closed, in sum, said system can in the special applications scene that pressure is higher safety, stable use.
Description
Technical field
This utility model belongs to the technical field of the hydraulic system realizing supertension output, especially one and possesses supertension output energy
The hydraulic system of power.
Background technology
Hydraulic system, using fluid as working media, utilizes the pressure of fluid and to handle hydraulic pressure execution by controlling the adnexaes such as valve
The package unit of mechanism's work, its effect is to increase output action power to increase active force by improving oil liquid pressure by changing pressure,
Complete system is made up of power section, executable portion, control part, slave part and hydraulic oil, and power section is primarily referred to as
Hydraulic pump, it provides power, executable portion to be primarily referred to as hydraulic cylinder for whole system, and it can drive or swage load, controls
Part is primarily referred to as various hydraulic valve, including pressure-control valve, flow control valve, directional control valve etc., the pressure of main regulation fluid,
Flow and direction, slave part is primarily referred to as fuel tank, filter, oil pipe etc., and hydraulic oil can use mineral oil, synthesis hydraulic pressure
Oil etc..The maximum pressure of Normal hydraulic system is 32MPa, can meet the use demand that industrial circle is most, but in some requirement
In High power output, lightweight special applications scene, need the pressure of hydraulic system is brought up to 70MPa, 140MPa even
Higher, this is accomplished by being optimized each part in hydraulic system, to realize the supercharging of large flowrate and non-pressure fluctuation, to stablize
The targets such as the ability of pressurize, work speed and the controllability of pressure release speed, electrodeless load capability and high reliability, to sum up institute
State, in the special applications scene that pressure is higher, be badly in need of a kind of can trouble free service and possess above-mentioned various feature possess superelevation
The hydraulic system of pressure fan-out capability.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that work speed and pressure release speed is adjustable, stablize pressurize,
A kind of hydraulic system possessing supertension fan-out capability of electrodeless loading.
This utility model adopts the technical scheme that:
A kind of hydraulic system possessing supertension fan-out capability, it is characterised in that: include that fuel tank, pump, F.F. loop and work are entered back
Road；
Described F.F. loop includes F.F. three-position four-way valve, two-way valve, super-pressure hydraulic control check valve, one-way throttle valve and performs oil
Cylinder, an actuator port of F.F. three-position four-way valve is connected in series two-way valve and described performs oil with connecting after super-pressure hydraulic control check valve
The oil pocket without bar of cylinder, another actuator port of F.F. three-position four-way valve connects described execution oil cylinder after being connected in series one-way throttle valve
Have bar oil pocket, the oil circuit control mouth of described super-pressure hydraulic control check valve is connected in parallel on another work of described F.F. three-position four-way valve
On oil pipe between hydraulic fluid port and described one-way throttle valve, the oil-in of described F.F. three-position four-way valve is fuel-displaced by pump connection fuel tank
Mouthful, the oil return opening of the inlet port connection fuel tank of described F.F. three-position four-way valve；
Described work is entered loop and is included that work enters three-position four-way valve, hydraulic control one-way valve, one-way throttle valve and superhigh pressure booster cylinder, and work enters three
One actuator port series connection hydraulic control one-way valve and the large tank oil connecting described superhigh pressure booster cylinder after one-way throttle valve of position four-way valve
Mouthful, work enter three-position four-way valve another actuator port series connection hydraulic control one-way valve after connect described superhigh pressure booster cylinder small oil tank oil
Mouthful, the pressurised oil hydraulic fluid port of described superhigh pressure booster cylinder is connected in the oil pocket without bar of described execution oil cylinder and described supertension hydraulic control in parallel
On oil pipe between check valve, described work is entered the oil-in of three-position four-way valve and is connected in pump and the oil-feed of F.F. three-position four-way valve in parallel
On oil pipe between Kou, described work is entered the inlet port of three-position four-way valve and is connected in oil-out and the F.F. three-position four-way valve of fuel tank in parallel
Inlet port between oil pipe on.
And, the import of described pump is in the oil-out of fuel tank stretches into fuel tank and its end installs an oil absorption filter, described pump
Connect on the oil pipe in exit pressure piping filter and a check valve, this check valve and described F.F. three-position four-way valve oil-in it
Between oil pipe on two replenishing valves in parallel, the end of the oil pipe at each replenishing valve place is respectively mounted an accumulator.
And, a pressure transducer in parallel on the oil pipe at described check valve place, the end peace of the oil pipe at this pressure transducer place
Fill a Pressure gauge.
And, the oil pipe being connected with tank drainback mouth is connected in series a return filter, the oil pipe in this return filter exit
And a proportional pressure control valve in parallel between the oil pipe at described one-way valved outlet.
And, on the oil pipe on the oil pipe in described two-way valve exit and at described another actuator port of F.F. three-position four-way valve all
Series connection one stop valve of link.
And, described work is entered and is connected in parallel an overflow valve between two oil pipes at two actuator ports of three-position four-way valve.
And, all it is connected in series a stop valve on the oil pipe of described large tank oil port and on the oil pipe of described small oil tank oil port.
And, the cylinder body of described large tank reset side is installed one and is used for detecting the proximity switch whether piston resets, near described
High-pressure pressure sensor is installed on the cylinder body of small oil tank hydraulic fluid port.
And, the air inlet of described fuel tank is installed an air filter.
Advantage of the present utility model and good effect be:
1., in native system, work is entered the superhigh pressure booster cylinder in loop and is used the setting of big flow, and pressure ratio is big, and output pressure is high,
The flow of supercharging fluid of single stroke output disclosure satisfy that and perform the demand that oil cylinder work is entered, it is to avoid frequently use the increasing of reversal valve
The pressure oscillation that pressure mode causes, it is ensured that the stability of supercharging.
2., in native system, the super-pressure hydraulic control check valve used in F.F. loop possesses the ability bearing supertension, makes pressure maintaining period
Stable, safety, and can automatically open up when controlling and having crossing applying control oil, make fluid traffic direction change, with
F.F. three-position four-way valve coordinates, and makes execution oil cylinder reset, and waits next operation, and this valve arrangement is compact, volume is little, No leakage,
Use safety.
3. in native system, Set scale overflow valve at delivery side of pump, the stepless change of pump discharge pressure, superhigh pressure booster cylinder can be made
Pressure ratio be fixed value, then superhigh pressure booster cylinder output the stepless change of ultra high pressure, i.e. realize system stepless loading function.
4., in this utility model, use two three-position four-way valves to complete F.F. loop and work enters the commutation of fluid in loop, by list
To the flow of throttle valve adjustment fluid, provide supertension fluid by superhigh pressure booster cylinder for performing oil cylinder, it follows that each portion
Part cooperates and achieves the output of ultra high pressure, and the various pressure transducers and the Pressure gauge that arrange in system can be directly perceived
Display pressure value, it is possible to be used in combination with electric-control system, be automatically stopped pressurization, pressure release when pressure value exception
After each parts are closed, in sum, the use that said system can be safe and stable in the special applications scene that pressure is higher.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with embodiment, further illustrating this utility model, following embodiment is illustrative, is not determinate,
Protection domain of the present utility model can not be limited with following embodiment.
A kind of hydraulic system possessing supertension fan-out capability, as it is shown in figure 1, innovation of the present utility model is: include fuel tank
16, pump (can be variable pump) 18, F.F. loop and work enter loop；
Described F.F. loop includes F.F. three-position four-way valve 10, two-way valve 9, super-pressure hydraulic control check valve 7, one-way throttle valve 8
With execution oil cylinder 5, an actuator port (A mouth) of F.F. three-position four-way valve is connected in series two-way valve and super-pressure hydraulic control check valve
The oil pocket without bar 6 of rear connection described execution oil cylinder, another actuator port (B mouth) of F.F. three-position four-way valve is connected in series unidirectional
Connect described execution oil cylinder after choke valve has bar oil pocket 4, and the oil circuit control mouth (K) of described super-pressure hydraulic control check valve is connected in parallel on
On oil pipe 28 between another actuator port (B mouth) and the described one-way throttle valve of described F.F. three-position four-way valve, described soon
Enter the oil-in (P mouth) oil-out by pump connection fuel tank of three-position four-way valve, the inlet port (O of described F.F. three-position four-way valve
Mouthful) connection fuel tank oil return opening；
Described work is entered loop and is included that work enters three-position four-way valve 23, hydraulic control one-way valve 25, one-way throttle valve 26 and superhigh pressure booster cylinder
2, work is entered an actuator port (A mouth) of three-position four-way valve and is connected hydraulic control one-way valve and connect described supertension after one-way throttle valve
Large tank 29 hydraulic fluid port of pressurized cylinder, work enter three-position four-way valve another actuator port (B mouth) series connection hydraulic control one-way valve after connect
Small oil tank 30 hydraulic fluid port of described superhigh pressure booster cylinder, the pressurised oil hydraulic fluid port 31 of described superhigh pressure booster cylinder be connected in parallel described in hold
On oil pipe between oil pocket without bar and the described super-pressure hydraulic control check valve of row oil cylinder, described work enters the oil-in (P of three-position four-way valve
Mouthful) be connected in parallel on the oil pipe between the oil-in of pump and F.F. three-position four-way valve, described work enters the inlet port of three-position four-way valve
(O mouth) is connected in parallel on the oil pipe between the oil-out of fuel tank and the inlet port of F.F. three-position four-way valve.
In the present embodiment, perform the cylinder body in oil cylinder and superhigh pressure booster cylinder and other parts are required to use and can bear supertension
Material, and suitable increase thickness, thereby guarantee that stability and the safety of the work when carrying out ultra high pressure output.
Above-mentioned F.F. 3-position 4-way is sent out and is entered three-position four-way valve with work and all use Y type three position four-way directional control valve, and the oil passage on its spool is
Known technology, is not described in detail at this.Two one-way throttle valves in work enters loop can use a Double throttle check valve
?.
The import of described pump is in the oil-out of fuel tank stretches into fuel tank and its end installs an oil absorption filter 17, described delivery side of pump
Connect a pressure piping filter 19 and check valve 20 on the oil pipe at place, this check valve and described F.F. three-position four-way valve oil-in
Between oil pipe on two replenishing valves 12 in parallel, the end of the oil pipe at each replenishing valve place is respectively mounted an accumulator 11.
A pressure transducer 22 in parallel on the oil pipe at described check valve place, the end of the oil pipe at this pressure transducer place installs one
Individual Pressure gauge 21.A return filter 14 it is connected in series on the oil pipe being connected with tank drainback mouth, this return filter exit
A proportional pressure control valve 13 in parallel between oil pipe at oil pipe and described one-way valved outlet.On the oil pipe in described two-way valve exit and
On oil pipe at described another actuator port of F.F. three-position four-way valve, all series connection links a stop valve 27.
Described work is entered and is connected in parallel an overflow valve 24 between two oil pipes at two actuator ports of three-position four-way valve.Described greatly
A stop valve 27 all it is connected in series on oil pipe at oil cylinder port and on the oil pipe of described small oil tank oil port.Described large tank is multiple
Install one on the cylinder body of side, position to be used for detecting the proximity switch 1 whether piston resets, pacify on the cylinder body of described small oil tank hydraulic fluid port
Dress high-pressure pressure sensor 3.One air filter 15 is installed on the air inlet of described fuel tank.
Work process of the present utility model is:
1., time initially, the piston of execution oil cylinder is in bottom, and the piston of the large tank of superhigh pressure booster cylinder is in the leftmost side；
2. work enters loop entirety cut-off state, and two replenishing valve conductings, the spool of F.F. three-position four-way valve promotes to the left, accumulation of energy
Device and oil pump feed, make the piston quickly upwards F.F. of execution oil cylinder；
3. after the piston F.F. performing oil cylinder puts in place, the valve core reset that F.F. 3-position 4-way is sent out, F.F. loop entirety cut-off state,
Work is entered the spool of three-position four-way valve and is promoted to the left, and pump, to extra high pressure charging oil supply cylinder, makes the piston of large tank run to the right,
Thus make the fluid of supertension in pressurised oil hydraulic fluid port enters the oil pocket without bar performing oil cylinder so that it is piston enters high pressure work and enters state；
4. the oil mass of pressurised oil can meet and performs the whole work of oil cylinder and enter the use of state, and after work enters position, it is overall that work enters loop
Cut-off state, enters packing state；
5. after pressurize terminates, work is entered the spool of three-position four-way valve and is promoted to the right, now due to the oil circuit control mouth of hydraulic control one-way valve
Flowing into high-voltage oil liquid so that it is reverse-conducting, the large tank piston of superhigh pressure booster cylinder resets operation to the left, make execution oil cylinder without
The supertension of bar oil pocket reduces, and enters pressure release state, and now the spool of F.F. three-position four-way valve is in middle position；
6. after pressure release terminates, the spool of F.F. three-position four-way valve promotes to the right, and large tank piston continues to move to the left, now
Two-way valve is still within cut-off state, and the fluid without bar oil pocket gradually returns in superhigh pressure booster cylinder, when large tank piston returns to
During left side, proximity switch action, drive two-way valve to return to conducting state by automatically controlled part, work is entered three-position four-way valve and is resetted, work
Entering loop entirety cut-off state, the piston performing oil cylinder continues to move downward；
7, when the piston performing oil cylinder returns to bottom, complete one action circulation, all valves reset, and wait next operation.
In this utility model, use two three-position four-way valves to complete F.F. loop and work enters the commutation of fluid in loop, by unidirectional
The flow of throttle valve adjustment fluid, provides supertension fluid by superhigh pressure booster cylinder for performing oil cylinder, it follows that each parts
Cooperate and achieve the output of ultra high pressure, and the various pressure transducers and the Pressure gauge that arrange in system can be intuitively
Display pressure value, it is possible to be used in combination with electric-control system, be automatically stopped pressurization, after pressure release when pressure value exception
Each parts are closed, in sum, the use that said system can be safe and stable in the special applications scene that pressure is higher.
Claims (9)
1. the hydraulic system possessing supertension fan-out capability, it is characterised in that: include that fuel tank, pump, F.F. loop and work are entered
Loop；
Described F.F. loop includes F.F. three-position four-way valve, two-way valve, super-pressure hydraulic control check valve, one-way throttle valve and performs oil
Cylinder, an actuator port of F.F. three-position four-way valve is connected in series two-way valve and described performs oil with connecting after super-pressure hydraulic control check valve
The oil pocket without bar of cylinder, another actuator port of F.F. three-position four-way valve connects described execution oil cylinder after being connected in series one-way throttle valve
Have bar oil pocket, the oil circuit control mouth of described super-pressure hydraulic control check valve is connected in parallel on another work of described F.F. three-position four-way valve
On oil pipe between hydraulic fluid port and described one-way throttle valve, the oil-in of described F.F. three-position four-way valve is fuel-displaced by pump connection fuel tank
Mouthful, the oil return opening of the inlet port connection fuel tank of described F.F. three-position four-way valve；
Described work is entered loop and is included that work enters three-position four-way valve, hydraulic control one-way valve, one-way throttle valve and superhigh pressure booster cylinder, and work enters three
One actuator port series connection hydraulic control one-way valve and the large tank oil connecting described superhigh pressure booster cylinder after one-way throttle valve of position four-way valve
Mouthful, work enter three-position four-way valve another actuator port series connection hydraulic control one-way valve after connect described superhigh pressure booster cylinder small oil tank oil
Mouthful, the pressurised oil hydraulic fluid port of described superhigh pressure booster cylinder is connected in the oil pocket without bar of described execution oil cylinder and described supertension hydraulic control in parallel
On oil pipe between check valve, described work is entered the oil-in of three-position four-way valve and is connected in pump and the oil-feed of F.F. three-position four-way valve in parallel
On oil pipe between Kou, described work is entered the inlet port of three-position four-way valve and is connected in oil-out and the F.F. three-position four-way valve of fuel tank in parallel
Inlet port between oil pipe on.
A kind of hydraulic system possessing supertension fan-out capability the most according to claim 1, it is characterised in that: described pump
Import is in the oil-out of fuel tank stretches into fuel tank and its end installs an oil absorption filter, and the oil pipe at described delivery side of pump is connected
One pressure piping filter and check valve, on the oil pipe between this check valve with described F.F. three-position four-way valve oil-in two in parallel
Replenishing valve, the end of the oil pipe at each replenishing valve place is respectively mounted an accumulator.
A kind of hydraulic system possessing supertension fan-out capability the most according to claim 2, it is characterised in that: described unidirectional
A pressure transducer in parallel on the oil pipe at valve place, the end of the oil pipe at this pressure transducer place installs a Pressure gauge.
A kind of hydraulic system possessing supertension fan-out capability the most according to claim 3, it is characterised in that: return with fuel tank
It is connected in series a return filter, at the oil pipe in this return filter exit and described one-way valved outlet on the oil pipe that hydraulic fluid port connects
Oil pipe between a proportional pressure control valve in parallel.
5., according to a kind of hydraulic system possessing supertension fan-out capability described in claim 1 or 2 or 3 or 4, its feature exists
In: equal serial chain on the oil pipe on the oil pipe in described two-way valve exit and at described another actuator port of F.F. three-position four-way valve
Connect a stop valve.
A kind of hydraulic system possessing supertension fan-out capability the most according to claim 5, it is characterised in that: described work is entered
It is connected in parallel an overflow valve between two oil pipes at two actuator ports of three-position four-way valve.
7., according to a kind of hydraulic system possessing supertension fan-out capability described in claim 1 or 2 or 3 or 4 or 6, it is special
Levy and be: on the oil pipe of described large tank oil port and on the oil pipe of described small oil tank oil port, be all connected in series a stop valve.
A kind of hydraulic system possessing supertension fan-out capability the most according to claim 7, it is characterised in that: described big oil
Install one on the cylinder body of cylinder reset side to be used for detecting the proximity switch whether piston resets, on the cylinder body of described small oil tank hydraulic fluid port
High-pressure pressure sensor is installed.
9. according to a kind of hydraulic system possessing supertension fan-out capability described in claim 1 or 2 or 3 or 4 or 6 or 8,
It is characterized in that: an air filter is installed on the air inlet of described fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620357632.8U CN205715015U (en) | 2016-04-25 | 2016-04-25 | A kind of hydraulic system possessing supertension fan-out capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620357632.8U CN205715015U (en) | 2016-04-25 | 2016-04-25 | A kind of hydraulic system possessing supertension fan-out capability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205715015U true CN205715015U (en) | 2016-11-23 |
Family
ID=57292967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620357632.8U Expired - Fee Related CN205715015U (en) | 2016-04-25 | 2016-04-25 | A kind of hydraulic system possessing supertension fan-out capability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205715015U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889159A (en) * | 2016-04-25 | 2016-08-24 | 天津优瑞纳斯智能装备有限公司 | Hydraulic system with ultra-high pressure outputting capacity |
| CN106523584A (en) * | 2016-12-06 | 2017-03-22 | 天津永乐网络科技有限公司 | Electromechanical damping mechanism with fine motion function |
| CN106545528A (en) * | 2016-12-06 | 2017-03-29 | 天津威尔福科技有限公司 | Automatically controlled damping |
| CN110847859A (en) * | 2019-11-11 | 2020-02-28 | 中国海洋石油集团有限公司 | Intelligent well completion downhole flow valve ground control ultrahigh pressure hydraulic system |
| CN111054810A (en) * | 2019-12-03 | 2020-04-24 | 天津市天锻压力机有限公司 | Ultrahigh pressure working system of flexible forming medium of liquid-filling forming equipment |
| CN112343896A (en) * | 2020-10-29 | 2021-02-09 | 武汉船用机械有限责任公司 | Hydraulic control system for large-flow oil cylinder |
| CN112610548A (en) * | 2020-12-09 | 2021-04-06 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Novel hydraulic device |
| CN112797037A (en) * | 2021-02-26 | 2021-05-14 | 太重集团榆次液压工业(济南)有限公司 | Continuous pressurization system with adjustable pressurization rate and control method thereof |
| CN114396008A (en) * | 2021-12-14 | 2022-04-26 | 中国重汽集团柳州运力科迪亚克机械有限责任公司 | Baffle device with rolling brush and turbulent flow |
-
2016
- 2016-04-25 CN CN201620357632.8U patent/CN205715015U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889159A (en) * | 2016-04-25 | 2016-08-24 | 天津优瑞纳斯智能装备有限公司 | Hydraulic system with ultra-high pressure outputting capacity |
| CN105889159B (en) * | 2016-04-25 | 2018-01-23 | 天津优瑞纳斯智能装备有限公司 | A kind of hydraulic system for possessing super-pressure fan-out capability |
| CN106523584A (en) * | 2016-12-06 | 2017-03-22 | 天津永乐网络科技有限公司 | Electromechanical damping mechanism with fine motion function |
| CN106545528A (en) * | 2016-12-06 | 2017-03-29 | 天津威尔福科技有限公司 | Automatically controlled damping |
| CN106523584B (en) * | 2016-12-06 | 2018-09-11 | 中铁建设集团北京工程有限公司 | Electromechanical damping with fine motion function |
| CN110847859A (en) * | 2019-11-11 | 2020-02-28 | 中国海洋石油集团有限公司 | Intelligent well completion downhole flow valve ground control ultrahigh pressure hydraulic system |
| CN111054810A (en) * | 2019-12-03 | 2020-04-24 | 天津市天锻压力机有限公司 | Ultrahigh pressure working system of flexible forming medium of liquid-filling forming equipment |
| CN112343896A (en) * | 2020-10-29 | 2021-02-09 | 武汉船用机械有限责任公司 | Hydraulic control system for large-flow oil cylinder |
| CN112343896B (en) * | 2020-10-29 | 2022-07-22 | 武汉船用机械有限责任公司 | Hydraulic control system for large-flow oil cylinder |
| CN112610548A (en) * | 2020-12-09 | 2021-04-06 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Novel hydraulic device |
| CN112797037A (en) * | 2021-02-26 | 2021-05-14 | 太重集团榆次液压工业(济南)有限公司 | Continuous pressurization system with adjustable pressurization rate and control method thereof |
| CN114396008A (en) * | 2021-12-14 | 2022-04-26 | 中国重汽集团柳州运力科迪亚克机械有限责任公司 | Baffle device with rolling brush and turbulent flow |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205715015U (en) | A kind of hydraulic system possessing supertension fan-out capability | |
| CN105889159B (en) | A kind of hydraulic system for possessing super-pressure fan-out capability | |
| CN103899587B (en) | Synchronous jacking hydraulic control system | |
| CN107013534B (en) | Aero-engine key component inertia friction welder fluid power system | |
| CN203769811U (en) | Self-help supercharging system with hydraulic supercharger and upright columns for hydraulic support | |
| CN103085865A (en) | Load sensitive turning hydraulic system of loading machine | |
| CN104029721B (en) | Loader hydraulic transfer | |
| CN203297181U (en) | System adopting load sensitivity control | |
| CN204878978U (en) | Hydraulic drive system of extra -large -size reservoir atmospheric valve | |
| CN107191423A (en) | A kind of hydraulic synchronization control loop | |
| CN203835836U (en) | Synchronous lifting hydraulic control system | |
| CN104192201B (en) | Hydraulic steering control valve and hydraulic steering system | |
| CN203230677U (en) | Automatic oil supplementing system of closed hydraulic cargo winch | |
| CN103114624B (en) | The load-sensitive control system of loader | |
| CN204357806U (en) | A kind of simple and easy self booster | |
| CN103410188A (en) | Hydraulic system, with load sensitive variable, for underground carry-scraper | |
| CN104314903B (en) | Quick response device, hydraulic load sensor-based system and engineering truck | |
| CN108266413B (en) | Asymmetric electro-hydrostatic actuator based on pressure selection valve | |
| CN209278233U (en) | A kind of passive type automatic resisting applying mechanism | |
| CN203476850U (en) | Flow control device of energy accumulator used for concrete pump truck and concrete pump truck | |
| CN203174660U (en) | Load-sensitive control system of loading machine | |
| CN202767158U (en) | Hydraulic excavator flow out of valve regenerating device | |
| CN207261371U (en) | Aero-engine key component inertia friction welder fluid power system | |
| CN202344016U (en) | Hydraulic device for plate shearing machine with adjustable angle | |
| CN207468069U (en) | Towing winch is met an urgent need release system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20180425 |