CN203098476U - Hydraulic oil return pipeline for engineering machinery - Google Patents
Hydraulic oil return pipeline for engineering machinery Download PDFInfo
- Publication number
- CN203098476U CN203098476U CN 201320135841 CN201320135841U CN203098476U CN 203098476 U CN203098476 U CN 203098476U CN 201320135841 CN201320135841 CN 201320135841 CN 201320135841 U CN201320135841 U CN 201320135841U CN 203098476 U CN203098476 U CN 203098476U
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- CN
- China
- Prior art keywords
- oil
- oil return
- hydraulic
- returning tube
- executive component
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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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- Fluid-Pressure Circuits (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The utility model discloses a hydraulic oil return pipeline for engineering machinery. The hydraulic oil return pipeline comprises an actuator and an oil return tank, between which a valve group is arranged, wherein a high-pressure pipeline and a first oil return pipeline are arranged between the actuator and the valve group; and a second oil return pipeline is arranged between the valve group and the oil return tank. The hydraulic oil return pipeline is characterized in that a third oil return pipeline is connected in parallel with the first oil return pipeline; a ball valve is arranged on the third oil return pipeline; and one end of the third oil return pipeline is connected with the first oil return pipeline, and the other end is connected with the oil return tank. The hydraulic oil return pipeline has the benefits that the ball valve is connected in parallel with the oil return pipelines of a hydraulic system, so as to allow the back pressure of the hydraulic return oil and the oil temperature of the hydraulic return oil to be reduced.
Description
Technical field
The utility model relates to construction machinery hydraulic system, is specifically related to a kind of pipeline that reduces the pressure and temperature of engineering machinery hydraulic oil return system.
Background technique
Hydraulic oil-returning system works principle is the pressure energy that oil hydraulic pump converts mechanical energy to liquid, pressure, the flow direction and the flow of hydraulic control valve and hydraulic pressure auxiliary member control hydraulic medium, the pressure of oil hydraulic pump output can be passed to executive component, and executive component can be converted to mechanical energy with fluid pressure.
The valve group is when the action of control actuating component in the normal at present oil hydraulic circuit structure that adopts, each position in the valve group is divided into high pressure pipe line and oil returning tube, the hydraulic oil that returns from executive component leads to oil sump tank after through the oil returning tube of valve group, sometimes since the fuselage length of whole machinery cause towards the hydraulic oil of the oil sump tank very long hydraulic tubing of need flowing through, cause the big pressure loss, produce more heat transfer.
The model utility content
The utility model has adopted ball valve in parallel on the hydraulic system return line, is that part or all hydraulic oil-returning is by the direct oil return of ball valve in parallel, another part hydraulic oil-returning Huis fuel tank or heat radiation.
The utility model is by the following technical solutions:
A kind of engineering machinery hydraulic return line, comprise executive component and oil sump tank, be provided with the valve group between described executive component and the described oil sump tank, be respectively equipped with the high pressure pipe line and first oil returning tube in mode arranged side by side between described executive component and the described valve group, described valve group is connected by second oil returning tube with described oil sump tank; It is characterized in that: described engineering machinery hydraulic return line also comprises the 3rd oil returning tube, described the 3rd oil returning tube is provided with ball valve, described the 3rd oil returning tube one end is connected with described first oil returning tube, and the other end of described the 3rd oil returning tube is connected with described oil sump tank.
Be connected with the 3rd oil returning tube by mode on described first oil returning tube by parallel connection, described the 3rd oil returning tube is provided with ball valve, make part or all hydraulic oil-returning by the direct oil return of ball valve in parallel, avoided because the fuselage length of whole machinery causes towards flow through very long hydraulic pipe line of the oil require of fuel tank, solved and reduced the too high deficiency of hydraulic system return oil pressure, make the hydraulic oil-returning oil sump tank or the heat radiation of another part, solved the too fast deficiency of oily temperature rise.
Further scheme is, described executive component is unidirectional executive component or two-way executive component.
Select to use different executive components according to the machinery of different model.
Further scheme is, described high pressure pipe line is provided with quick release coupling.
Further scheme is, described first oil returning tube is provided with quick release coupling.
Compared with prior art, the beneficial effects of the utility model are:
By ball valve in parallel on the hydraulic system return line hydraulic oil-returning back pressure is reduced and the oily temperature drop of hydraulic oil-returning low.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment's of the utility model engineering machinery hydraulic return line.
As shown in Figure 1, the name of corresponding reference character is called among the figure:
1 executive component, 2 quick release couplings, 3 first oil returning tubes, 4 high pressure pipe lines, 5 the 3rd oil returning tubes, 6 ball valves, 7 valve groups, 8 oil sump tanks, 9 second oil returning tubes.
Embodiment
Below in conjunction with accompanying drawing the utility model is further elaborated.
As shown in Figure 1, a kind of engineering machinery hydraulic return line, comprise executive component 1 and oil sump tank 8, be provided with valve group 7 between described executive component 1 and the described oil sump tank 8, described executive component 1 is connected by two pipelines with described valve group 7, described two pipelines are provided with in mode arranged side by side, one is high pressure pipe line 4, another root is first oil returning tube 3, be connected by second oil returning tube 9 between described valve group 7 and the described oil sump tank 8, described engineering machinery hydraulic return line also comprises the 3rd oil returning tube 5, described the 3rd oil returning tube 5 is provided with ball valve 6, one end of described the 3rd oil returning tube 5 is connected with described first oil returning tube 3, and the other end of described the 3rd oil returning tube 5 is connected with described oil sump tank 8.
By ball valve 6 in parallel on the hydraulic oil-returning oil circuit, the hydraulic oil-returning of hydraulic circuit can significantly reduce the loss of pressure like this by the oil circuit and ball valve 6 oil returns in parallel of valve group 7 tops, reduces return oil pressure, the heating of minimizing system.
According to an embodiment of the present utility model, described executive component is unidirectional executive component.
According to an embodiment of the present utility model, described executive component is two-way executive component.
The principle of two-way executive component is as follows: during 1 action of valve group 7 control actuating component, ball valve 6 is closed, and when valve group 7 upper left oil circuits were high pressure pipe line 4, valve group 7 top-right oil circuits were first oil returning tube 3; When valve group 7 top-right oil circuits were high pressure pipe line 4, valve group 7 upper left oil circuits were first oil returning tube 3, the action reversed of executive component 1.
According to an embodiment of the present utility model, described high pressure pipe line 4 is provided with quick release coupling 2.
According to an embodiment of the present utility model, described first oil returning tube 3 is provided with quick release coupling 2.
" embodiment " who is spoken of in this manual, " another embodiment ", " embodiment ", etc., refer to concrete feature, structure or the characteristics described in conjunction with this embodiment and be included among at least one embodiment that the application's generality describes.A plurality of local appearance statement of the same race is not necessarily to refer to same embodiment in specification.Furthermore, when describing a concrete feature, structure or characteristics in conjunction with arbitrary embodiment, what advocate is to realize that in conjunction with other embodiments this feature, structure or characteristics also drop in the scope of the present utility model.
Although with reference to a plurality of explanatory embodiments of the present utility model model utility is described here, but, should be appreciated that, those skilled in the art can design a lot of other modification and mode of executions, and these are revised and mode of execution will drop within the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open and claim, can carry out multiple modification and improvement to the constituent elements and/or the layout of subject combination layout in the application.Except modification that constituent elements and/or layout are carried out with improving, to those skilled in the art, other purposes also will be tangible.
Claims (4)
1. engineering machinery hydraulic return line, comprise executive component and oil sump tank, be provided with the valve group between described executive component and the described oil sump tank, be respectively equipped with the high pressure pipe line and first oil returning tube in mode arranged side by side between described executive component and the described valve group, described valve group is connected by second oil returning tube with described oil sump tank; It is characterized in that: described engineering machinery hydraulic return line also comprises the 3rd oil returning tube, described the 3rd oil returning tube one end is connected with described first oil returning tube, the other end of described the 3rd oil returning tube is connected with described oil sump tank, and described the 3rd oil returning tube is provided with ball valve.
2. engineering machinery hydraulic return line according to claim 1 is characterized in that: described executive component is unidirectional executive component or two-way executive component.
3. engineering machinery hydraulic return line according to claim 1 is characterized in that: described high pressure pipe line is provided with quick release coupling.
4. engineering machinery hydraulic return line according to claim 1 is characterized in that: described first oil returning tube is provided with quick release coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320135841 CN203098476U (en) | 2013-03-22 | 2013-03-22 | Hydraulic oil return pipeline for engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320135841 CN203098476U (en) | 2013-03-22 | 2013-03-22 | Hydraulic oil return pipeline for engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203098476U true CN203098476U (en) | 2013-07-31 |
Family
ID=48849881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320135841 Expired - Fee Related CN203098476U (en) | 2013-03-22 | 2013-03-22 | Hydraulic oil return pipeline for engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203098476U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758811A (en) * | 2014-01-08 | 2014-04-30 | 江苏大洋精锻有限公司 | Bypass pressure relief system |
-
2013
- 2013-03-22 CN CN 201320135841 patent/CN203098476U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758811A (en) * | 2014-01-08 | 2014-04-30 | 江苏大洋精锻有限公司 | Bypass pressure relief system |
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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: 20130731 Termination date: 20160322 |