CN202301238U - Hydraulic system - Google Patents
Hydraulic system Download PDFInfo
- Publication number
- CN202301238U CN202301238U CN2011203964829U CN201120396482U CN202301238U CN 202301238 U CN202301238 U CN 202301238U CN 2011203964829 U CN2011203964829 U CN 2011203964829U CN 201120396482 U CN201120396482 U CN 201120396482U CN 202301238 U CN202301238 U CN 202301238U
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- China
- Prior art keywords
- check valve
- oil
- pilot operated
- hydraulic
- operated check
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- 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
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Abstract
The utility model discloses a hydraulic system, which comprises a single-acting hydraulic cylinder and an oil way system for providing pressure oil for a driving chamber of the single-acting hydraulic cylinder. The oil way system comprises a power part and a control part. A returning chamber of the hydraulic cylinder contacts air. The control part comprises a three-position four-way reversing valve with a Y-shaped median function, a stacked pilot operated check valve, a stacked double throttle check valve and a pilot operated check valve, wherein the three-position four-way reversing valve is connected with the power part; the stacked pilot operated check valve, the stacked double throttle check valve and the pilot operated check valve are sequentially connected with a working oil port of the three-position four-way reversing valve; two oil ports of the stacked double throttle check valve are connected with the pilot operated check valve, and specifically are connected with a control oil port and a working oil port of the pilot operated check valve respectively; and the other working oil port of the pilot operated check valve is connected with an oil tank. An oil port of the driving chamber of the hydraulic cylinder is connected between the working oil port of the pilot operated check valve and the stacked double throttle check valve. The hydraulic system can be locked at any position whether in load driving or in a returning travel, and is high in controllability and adjustable in speed.
Description
Technical field
The utility model relates to a kind of hydraulic system, comprises oil hydraulic cylinder and to it oil-way system of pressure oil is provided.
Background technique
Hydraulic system be with fluid as working medium, utilize the package unit of the operating hydraulically operated actuator of the pressure of fluid work, comprise oil hydraulic cylinder usually and the oil-way system of pressure oil be provided to oil hydraulic cylinder.
Said oil hydraulic cylinder is divided into single-action hydraulic cylinder and double-acting hydraulic cylinder; Single-action hydraulic cylinder wherein is meant that the motion of one of them direction realizes with oil pressure; Lean on external force such as deadweight, load or spring when returning, two chambeies of this oil cylinder have only an end that oil is arranged, and the other end then contacts with air.Advantages such as that single-action hydraulic cylinder has is simple in structure, fuel consumption is little are not fine but use the controllability of the hydraulic system of single-action hydraulic cylinder.
The model utility content
The technical problem that the utility model will solve is: a kind of single-action hydraulic cylinder and good hydraulic system of controllability used is provided.
In order to achieve the above object, the technological scheme of the utility model employing is:
Hydraulic system; Comprise single-action hydraulic cylinder and the oil-way system of pressure oil is provided to its actuator chamber; Oil-way system wherein comprises power section and control section; The return cavity of said oil hydraulic cylinder contacts with air, it is characterized in that: said control section comprises the three position four-way directional control valve of the meta function Y type that is connected with power section, and the stacking type hydraulic control check valve, overlapping Double throttle check valve and the Pilot operated check valve that are linked in sequence with its actuator port; Wherein two hydraulic fluid ports that are connected with Pilot operated check valve of overlapping Double throttle check valve connect the control port and an actuator port of this Pilot operated check valve respectively; Another actuator port connected tank of Pilot operated check valve, simultaneously, the actuator chamber hydraulic fluid port of said oil hydraulic cylinder is connected between the actuator port and overlapping Double throttle check valve of Pilot operated check valve.
Adopt the hydraulic system of said structure, when single-action hydraulic cylinder moves, utilize the control section of oil-way system can make no matter oil hydraulic cylinder still is in the return stroke, all can lock at an arbitrary position, and controllability is good, and adjustable-speed in driving load.
Description of drawings
Below in conjunction with accompanying drawing the embodiment of the utility model is done further explanation, wherein:
Fig. 1 is the schematic representation of the preferred implementation of the utility model hydraulic system.
Explanation to the reference character of concrete component:
1: level meter; 2: air-strainer; 3: the oil suction filter; 4: pump; 5: motor; 6: one-way valve; 7: pressure meter switch; 8: pressure gauge; 9: secondary filter; 10: solenoid directional control valve; 11: stacking type hydraulic control check valve; 12: the overlapping Double throttle check valve; 13: electromagnetic relief valve; 14: Pilot operated check valve; 15: single-action hydraulic cylinder; 16: cooler; 17: integrated package; 18: fuel tank; 19: coupling; 20: pump bracket; 21 stop valves.
Embodiment
Fig. 1 has shown the preferred implementation of the utility model hydraulic system.As shown in Figure 1, the hydraulic system of this mode of execution is a hydraulic lifting system, comprises single-action hydraulic cylinder 15 and to it oil-way system of pressure oil is provided.Can be provided with this special envelope in the oil hydraulic cylinder, Ge Laiquan is to possess Wear-resistant, high-temperature resistant, advantages such as pressure rating height.
Said oil hydraulic cylinder 15 comprises actuator chamber, i.e. its rod chamber, oil-way system to this part injection pressure oil to drive load; Oil hydraulic cylinder 15 also comprises return cavity, i.e. its rodless cavity.
Said oil-way system comprises power section and control section:
Said power section with the mechanical energy of pump 4 convert into fluid pressure can, the motor 5 of pump 4 is provided with electro-magnet switch M1, also is provided with electromagnetic relief valve 13 in power section simultaneously, it has electro-magnet switch 1CT;
Said control section comprises the three position four-way directional control valve 10 of the meta function Y type that is connected with power section; The filler opening of the three position four-way directional control valve 10 of this meta function Y type is connected with power section with return opening; Its actuator port also be linked in sequence stacking type hydraulic control check valve 11, overlapping Double throttle check valve 12 and Pilot operated check valve 14; Wherein two hydraulic fluid ports that are connected with Pilot operated check valve 14 of overlapping Double throttle check valve 12 connect the control port and an actuator port of Pilot operated check valve 14, another actuator port connected tank 18 of Pilot operated check valve 14 respectively.
Simultaneously, the actuator chamber hydraulic fluid port of oil hydraulic cylinder 15 is connected between the actuator port and overlapping Double throttle check valve 12 of Pilot operated check valve 14, and the return cavity hydraulic fluid port of oil hydraulic cylinder 15 contacts with air K.Preferably be provided with silencing apparatus, to eliminate the big defective of air inlet noise at the return cavity hydraulic fluid port.
When to the actuator chamber oiling, piston rod is downward, i.e. S direction motion, and the effect through sheave block makes cargo load G rise; When from the actuator chamber oil return, the return cavity air inlet adds that the action of gravity of cargo load G can make piston rod upwards immediately, i.e. U direction motion, and this moment, cargo load G descended.
Preferred said overlapping Double throttle check valve 12 is an inlet throttle.Further preferred said control section is an integrated package 17, and it has the big advantage of nominal flow rate.Further preferred said power section is a hydraulic station, and it has the advantage rapidly that descends.
Be further described below in conjunction with the hydraulic system of the electromagnet action schedule shown in the table 1, wherein show that with symbol "+" electromagnet is an operating state this mode of execution, narration for ease simultaneously, alleged " left side " " right side " of hereinafter is consistent with illustrated direction.
Table 1 electromagnet action schedule
| ? | M1 | 1CT | 2CT | 3CT |
| Pump is built pressure | + | + | ? | ? |
| Oil hydraulic cylinder is downward | + | + | + | ? |
| Oil hydraulic cylinder upwards | + | + | ? | + |
As shown in Figure 1, the three position four-way directional control valve 10 of stacking type hydraulic control check valve and meta function Y type is with the load of vertical location:
When hydraulic system was in running order, the electromagnet M1 of pump 4 and the electromagnet 1CT of electromagnetic relief valve 13 all remained on operating state;
When the normality position, two actuator ports of three position four-way directional control valve 10 all take back hydraulic fluid port, and the hydraulic fluid port of stacking type hydraulic control check valve 11 is all closed, the hydraulic locking cylinder attonity;
When needs make oil hydraulic cylinder downward, make the electromagnet 2CT action of three position four-way directional control valve 10, at this moment; The both sides oil circuit of stacking type hydraulic control check valve 11 is opened, and fluid is the oil circuit oil-feed from the right side, because Pilot operated check valve 14 is closed; Pressure oil injects actuator chamber, and it is downward to order about piston rod;
When needs make progress oil hydraulic cylinder, make the electromagnet 3CT action of three position four-way directional control valve 10, at this moment; The both sides oil circuit of stacking type hydraulic control check valve 11 is opened; To open Pilot operated check valve 14, the oil circuit on stacking type hydraulic control check valve 11 right sides is an oil return circuit to fluid from stacking type hydraulic control check valve 11 left side oil circuit oil-feeds, and the pressure oil in the actuator chamber refluxes; Under the acting in conjunction of cargo load and air, piston rod upwards.
In sum, only need the electromagnet of three position four-way directional control valve 10 is moved, can control making progress, perhaps locking of oil hydraulic cylinder rapidly downwards, realized good controllability.
Combine accompanying drawing and embodiment that the utility model has been done detailed explanation above; But the utility model is not limited to this; The technician in any present technique field is in the ken that is possessed; Under the prerequisite of the utility model aim, can make various distortion and modification to it.
Claims (5)
1. hydraulic system; Comprise single-action hydraulic cylinder and the oil-way system of pressure oil is provided to its actuator chamber; Oil-way system wherein comprises power section and control section; The return cavity of said oil hydraulic cylinder contacts with air, it is characterized in that: said control section comprises the three position four-way directional control valve of the meta function Y type that is connected with power section, and the stacking type hydraulic control check valve, overlapping Double throttle check valve and the Pilot operated check valve that are linked in sequence with its actuator port; Wherein two hydraulic fluid ports that are connected with Pilot operated check valve of overlapping Double throttle check valve connect the control port and an actuator port of this Pilot operated check valve respectively; Another actuator port connected tank of Pilot operated check valve, simultaneously, the actuator chamber hydraulic fluid port of said oil hydraulic cylinder is connected between the actuator port and overlapping Double throttle check valve of Pilot operated check valve.
2. hydraulic system according to claim 1 is characterized in that: said overlapping Double throttle check valve is an inlet throttle.
3. hydraulic system according to claim 1 and 2 is characterized in that: said control section is an integrated package.
4. hydraulic system according to claim 1 and 2 is characterized in that: be provided with silencing apparatus at the return cavity hydraulic fluid port.
5. hydraulic system according to claim 1 and 2 is characterized in that: said power section is a hydraulic station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203964829U CN202301238U (en) | 2011-10-18 | 2011-10-18 | Hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203964829U CN202301238U (en) | 2011-10-18 | 2011-10-18 | Hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202301238U true CN202301238U (en) | 2012-07-04 |
Family
ID=46370147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203964829U Expired - Fee Related CN202301238U (en) | 2011-10-18 | 2011-10-18 | Hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202301238U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106426155A (en) * | 2016-10-26 | 2017-02-22 | 珠海市横琴麒翔科技有限公司 | Hydraulic manipulator |
-
2011
- 2011-10-18 CN CN2011203964829U patent/CN202301238U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106426155A (en) * | 2016-10-26 | 2017-02-22 | 珠海市横琴麒翔科技有限公司 | Hydraulic manipulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20121018 |