CN203321924U - Hydraulic device for controlling stretching, pressure reserving and floating of oil cylinder - Google Patents
Hydraulic device for controlling stretching, pressure reserving and floating of oil cylinder Download PDFInfo
- Publication number
- CN203321924U CN203321924U CN2013203937483U CN201320393748U CN203321924U CN 203321924 U CN203321924 U CN 203321924U CN 2013203937483 U CN2013203937483 U CN 2013203937483U CN 201320393748 U CN201320393748 U CN 201320393748U CN 203321924 U CN203321924 U CN 203321924U
- Authority
- CN
- China
- Prior art keywords
- valve
- oil
- oil cylinder
- oil circuit
- proportional
- 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 - Lifetime
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
A hydraulic device for controlling stretching, pressure reserving and floating of an oil cylinder is characterized in that: the hydraulic device comprises the oil cylinder (7), a proportional valve (2), a unidirectional throttle valve (3), a shuttle valve (4), a damping throttle valve (5), a bidirectional hydraulic valve (6), a unidirectional valve (8), an electromagnetic reversing valve (9) and corresponding connecting pipeline; wherein, a rodless chamber of the oil cylinder (7) is serially connected with the bidirectional hydraulic lock (6), the unidirectional throttle valve (3) and the proportional valve (2) for forming a first oil path; after a rod chamber of the oil cylinder (7) is serially connected with the bidirectional hydraulic lock (6) and the proportional valve (2), a second oil path is formed; the first oil path and the second oil path are connected with the shuttle valve (4) therebetween; after the third end of the shuttle valve (4) is serially connected with the damping throttle valve (5), the shutter valve (4) is connected with the bidirectional hydraulic valve (6) and the unidirectional valve (8) successively; the unidirectional valve (8) is connected with the electromagnetic reversing valve (9) for forming a third oil path; the proportional valve (2) is connected with a main system pressure oil source (1); and the electromagnetic reversing valve (9) is connected with a control system pressure oil source (10).
Description
Technical field
The utility model design relates to a kind of hydraulic system, be specifically a kind ofly control that oil cylinder is flexible, pressurize and unsteady hydraulic pressure installation.
Background technique
The quality of hydraulic system directly affects the performance of engineering mechanical device, take the wind-powered electricity generation hanging device as example, often by HYDRAULIC CONTROL SYSTEM oil cylinder or motor elevator etc., meet equipment of itself installation and the job requirements when constructing, there is flexible and changeable specific function, represent the modern comfort performance.Realizing that wind-powered electricity generation hoist truss principal arm fell on function, requiring that oil cylinder on this equipment laying down mechanism has flexible, pressurize, the function such as float, be convenient to from walking after wind-powered electricity generation hoist truss principal arm was fallen, improving the wind turbine operating efficiency is installed; At present to control normal employing technology as follows for relevant oil cylinder hydraulic: the first as shown in Figure 2: oil cylinder is flexible, the pressurize Hydraulic System Principle; It stretches and pressurize (hydraulic pressure is locked) action for controlling oil cylinder; When on oil cylinder, bidirectional hydraulic lock being installed, be difficult to realize the functions such as oil-tank floating on original basis; The second is as shown in Figure 3: oil cylinder is flexible, pressurize and floating hydraulic system principle; For controlling, oil cylinder is flexible for it, pressurize (hydraulic pressure is locked) and the action of floating, but work as the control system solenoid directional control valve, breaks down, and will cause the accidents such as oil cylinder damage when oil cylinder need to stretch out, and there is potential safety hazard in this hydraulic system.
Summary of the invention
The purpose of this utility model provides a kind of hydraulic pressure installation that oil cylinder has flexible, pressurize and float function of controlling just for existing deficiency in above-mentioned prior art.This device outside guaranteeing the cylinder action function, also have when control unit breaks down also not can be to system in oil cylinder cause damage, be a kind of have safety, hydraulic system stable and reliable for performance.
The purpose of this utility model can realize by following technique measures:
Control oil cylinder of the present utility model is flexible, pressurize and unsteady hydraulic system comprise oil cylinder, Proportional valve, one-way throttle valve, shuttle valve, damping throttle valve, bidirectional hydraulic lock, one-way valve, solenoid directional control valve group and corresponding connecting pipeline; Wherein, oil cylinder rodless cavity and bidirectional hydraulic lock, one-way throttle valve and Proportional valve the first oil circuit in series; Cylinder rod chamber forms the second oil circuit after connecting with bidirectional hydraulic lock and Proportional valve; Be connected with shuttle valve between the first oil circuit and the second oil circuit, by after shuttle valve the 3rd end series damped throttle valve, connecting respectively bidirectional hydraulic lock and one-way valve, one-way valve and solenoid directional control valve connect and compose the 3rd oil circuit; Described Proportional valve connects the main system pressure oil-source; Described solenoid directional control valve connection control system pressure oil-source.
Comprise solenoid directional control valve described in the utility model in Proportional valve.
Working principle of the present utility model and beneficial effect are as follows:
The utility model is comprised of main hydraulic system and control hydraulic system, by the main hydraulic system pressure oil-source, connects the first oil circuit and the second oil circuit, by controlling the hydraulic system pressure oil sources, connects the 3rd oil circuit; Jointly control the function that makes oil cylinder reliably complete flexible or pressurize or quick condition by the first oil circuit, the second oil circuit and the 3rd oil circuit.
When oil cylinder is realized expanding-contracting action, even the obstruction of damping throttle valve still can complete the oil cylinder Telescopic because the 3rd oil circuit jointly controls and can not cause oil cylinder to damage; When oil cylinder is realized expanding-contracting action, even in the 3rd oil circuit, solenoid directional control valve breaks down, still can complete the oil cylinder Telescopic and can not cause oil cylinder to damage; This System Assurance, when realizing a plurality of working staties of oil cylinder, also efficiently solves difficult problems such as oil cylinder being caused damage when control unit (electromagnetism or damping throttle valve etc.) fault is arranged, makes system stability safety.
When by the first oil circuit and the second oil circuit Proportional valve and the 3rd oil circuit solenoid directional control valve all during dead electricity, oil cylinder carries out pressure holding function (hydraulic pressure is locked), main hydraulic system Proportional valve and control hydraulic system solenoid directional control valve, all in power failure state, do not need hydraulic energy source; When obtaining by the first oil circuit and the second oil circuit Proportional valve dead electricity and the 3rd oil circuit solenoid directional control valve when electric, oil cylinder carries out the quick condition function, and main hydraulic system does not need hydraulic energy source, only needs control system to participate in controlling; Above two kinds of functions (pressurize and unsteady) have energy-saving effect.
The utility model has the function of controlling three kinds of working staties of oil cylinder compared to existing technology; There is reliable safety protection function; There is obvious energy-saving effect.
The accompanying drawing explanation
Fig. 1 is hydraulic system principle figure of the present utility model.
Fig. 2 is the hydraulic system principle figure of flexible, the pressure holding function of oil cylinder in prior art.
Fig. 3 is the hydraulic system principle figure that in prior art, oil cylinder has flexible, pressurize and float function.
Sequence number in Fig. 1: 1: main system pressure oil-source; 2: Proportional valve; 3: one-way throttle valve; 4: shuttle valve; 5: the damping throttle valve; 6: bidirectional hydraulic lock; 7: oil cylinder; 8: one-way valve; 9: solenoid directional control valve; 10: the control system pressure oil-source.
Embodiment
The utility model is further described below with reference to embodiment's (accompanying drawing):
As shown in Figure 1, flexible, the pressurize of control oil cylinder of the present utility model and unsteady hydraulic system comprise oil cylinder 7, Proportional valve 2, one-way throttle valve 3, shuttle valve 4, damping throttle valve 5, bidirectional hydraulic lock 6, one-way valve 8,9 groups of solenoid directional control valves and corresponding connecting pipeline; Wherein, oil cylinder 7 rodless cavities and bidirectional hydraulic lock 6, one-way throttle valve 3 and Proportional valve 2 the first oil circuit in series; Oil cylinder 7 rod chambers form the second oil circuit after connecting with bidirectional hydraulic lock 6 and Proportional valve 2; Be connected with shuttle valve 4 between the first oil circuit and the second oil circuit, by rear bidirectional hydraulic lock 6 and the one-way valve 8 of connecting respectively of shuttle valve 4 the 3rd end series damped throttle valve 5, one-way valve 8 connects and composes the 3rd oil circuit with solenoid directional control valve 9; Described Proportional valve 2 connects main system pressure oil-source 1; Described solenoid directional control valve 9 connection control system pressure oil-sources 10.
Comprise solenoid directional control valve in Proportional valve described in the utility model 2.
The principle that hydraulic pressure installation of the present utility model is controlled three working staties of oil cylinder is as follows:
Main system pressure oil-source 1 passing ratio valve 2, Proportional valve coil SD1 obtains electric, control system pressure oil-source 10 obtains electric by electromagnetic switch valve coil SD3, hydraulic system jointly controls stretches out oil cylinder, otherwise main system pressure oil-source 1 passing ratio valve 2, Proportional valve coil SD2 obtains electric, and control system pressure oil-source 10 obtains electric by electromagnetic switch valve coil SD3, and hydraulic system jointly controls retracts oil cylinder; Realize that oil cylinder stretches out and the retraction working procedure in, in the first oil circuit of main system and the second oil circuit, the hydraulic pressure oil sources can not flow in control system affects its control system pressure, this is mainly owing to the setting of one-way valve 8 being arranged in the 3rd oil circuit of control system, make main system and control system all keep original characteristic; When there are pressure surge in main system the first oil circuit and the second oil circuit at work, due to the setting that damping throttle valve 5 is arranged in main system, can not affect the pressure of control system, not there will be the situation that causes control system pressure thereupon to fluctuate; During coil SD1, the SD2 in Proportional valve 2 and solenoid directional control valve 9, SD3 while dead electricity, oil cylinder is realized two-way pressurize, makes oil cylinder locked at an arbitrary position; When Proportional valve 2 coil SD1 and SD2 while dead electricity, solenoid directional control valve 9 coil SD3 obtain when electric, control system pressure oil-source 10 is by solenoid directional control valve 9, open bidirectional hydraulic lock 6 through one-way valve 8, the Median Function of the oily passing ratio valve 2 in cylinder rod chamber and rodless cavity, realize that two chambeies communicate and directly lead to fuel tank, oil cylinder two cavity oil liquid automatically supplements or gets rid of, oil cylinder is in quick condition, now Proportional valve is at meta, the first oil circuit all is connected with the oil sump tank passage with the second oil circuit, in system, has damping throttle valve 5 to arrange and can not make control system pressure decrease.
Claims (2)
- One kind control that oil cylinder is flexible, pressurize and unsteady hydraulic pressure installation, it is characterized in that: it comprises oil cylinder (7), Proportional valve (2), one-way throttle valve (3), shuttle valve (4), damping throttle valve (5), bidirectional hydraulic lock (6), one-way valve (8), solenoid directional control valve (9) and corresponding connecting pipeline; Wherein, oil cylinder (7) rodless cavity and bidirectional hydraulic lock (6), one-way throttle valve (3) and Proportional valve (2) the first oil circuit in series; Oil cylinder (7) rod chamber forms the second oil circuit after connecting with bidirectional hydraulic lock (6) and Proportional valve (2); Be connected with shuttle valve (4) between the first oil circuit and the second oil circuit, by after shuttle valve (4) the 3rd end series damped throttle valve (5), connecting respectively bidirectional hydraulic lock (6) and one-way valve (8), one-way valve (8) connects and composes the 3rd oil circuit with solenoid directional control valve (9); Described Proportional valve (2) connects main system pressure oil-source (1); Described solenoid directional control valve (9) connection control system pressure oil-source (10).
- 2. flexible, the pressurize of control oil cylinder according to claim 1 and unsteady hydraulic pressure installation, it is characterized in that: described Proportional valve comprises solenoid directional control valve in (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203937483U CN203321924U (en) | 2013-07-04 | 2013-07-04 | Hydraulic device for controlling stretching, pressure reserving and floating of oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203937483U CN203321924U (en) | 2013-07-04 | 2013-07-04 | Hydraulic device for controlling stretching, pressure reserving and floating of oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203321924U true CN203321924U (en) | 2013-12-04 |
Family
ID=49661279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203937483U Expired - Lifetime CN203321924U (en) | 2013-07-04 | 2013-07-04 | Hydraulic device for controlling stretching, pressure reserving and floating of oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203321924U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840564A (en) * | 2016-05-05 | 2016-08-10 | 四川重汽王牌兴城液压件有限公司 | Constant-pressure self-locking hydraulic lifting system of tower crane |
| CN106402077A (en) * | 2016-11-29 | 2017-02-15 | 四川凌峰航空液压机械有限公司 | Hydraulic actuator cylinder output speed controllable hydraulic loop system |
| CN107199841A (en) * | 2017-07-04 | 2017-09-26 | 农业部南京农业机械化研究所 | The hydraulic pressure independent suspension and its control method of a kind of horizontal automatic adjusument |
| CN113757440A (en) * | 2021-08-31 | 2021-12-07 | 新兴铸管股份有限公司 | Jaw type valve control device in iron-making discharging system |
-
2013
- 2013-07-04 CN CN2013203937483U patent/CN203321924U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840564A (en) * | 2016-05-05 | 2016-08-10 | 四川重汽王牌兴城液压件有限公司 | Constant-pressure self-locking hydraulic lifting system of tower crane |
| CN106402077A (en) * | 2016-11-29 | 2017-02-15 | 四川凌峰航空液压机械有限公司 | Hydraulic actuator cylinder output speed controllable hydraulic loop system |
| CN106402077B (en) * | 2016-11-29 | 2018-01-09 | 四川凌峰航空液压机械有限公司 | Hydraulic actuator class output speed controlled hydraulic circuit system |
| CN107199841A (en) * | 2017-07-04 | 2017-09-26 | 农业部南京农业机械化研究所 | The hydraulic pressure independent suspension and its control method of a kind of horizontal automatic adjusument |
| CN113757440A (en) * | 2021-08-31 | 2021-12-07 | 新兴铸管股份有限公司 | Jaw type valve control device in iron-making discharging system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203321924U (en) | Hydraulic device for controlling stretching, pressure reserving and floating of oil cylinder | |
| CN103603836B (en) | Cage hydraulic control system and engineering vehicle | |
| CN202251172U (en) | Synchronous hydraulic cylinder control system and crane | |
| CN204553382U (en) | A kind of Novel washing sweeps vehicle hydraulic system | |
| CN105351263B (en) | A kind of differential hydro cylinder control loop | |
| CN202833008U (en) | Concrete pump and hydraulic system thereof | |
| CN103334979B (en) | Double hydraulic cylinder synchronous control system and apply the engineering machinery of this control system | |
| CN104632729A (en) | Rotary drilling rig main winch hydraulic system | |
| CN104163385A (en) | Hydraulic control system for winch | |
| CN103967857A (en) | Control system of hydraulic quick change device and engineering machine | |
| CN102425582B (en) | Hydraulic control valve and getting-off support leg control system of firefighting vehicle with hydraulic control valve | |
| CN103807236B (en) | Valve control unit loads mouth independently controls multi-cylinder assignment of traffic hydraulic system | |
| CN103663196A (en) | Crane and super-hoisting winching component hydraulic system | |
| CN104481940A (en) | Hydraulic yawing brake system of wind driven generator | |
| CN202707689U (en) | Hinged hydraulic system and shield tunneling machine | |
| CN202926295U (en) | Cluster-type hydraulic pressure pumping unit | |
| CN203889961U (en) | Lifting arm telescoping hydraulic system and telescopic arm type automobile crane | |
| CN104179460B (en) | The tower frame lifting device of rotary drill | |
| CN202381432U (en) | Leveling overload valve and aerial work platform | |
| CN204213086U (en) | Hydraulic system and engineering machinery | |
| CN204828095U (en) | Two -way multisection hydro -cylinder protection energy -saving hydraulic system | |
| CN202091271U (en) | Hydraulic slave system of moveable bridge | |
| CN203430894U (en) | Double hydraulic cylinder synchronous control system and engineering machinery applying same | |
| CN203488471U (en) | Novel hydraulic distribution device for load sensing control hydraulic system | |
| CN203809418U (en) | Hydraulic oil cylinder testing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131204 |
|
| CX01 | Expiry of patent term |