CN203144016U - Ultrahigh voltage electric hydraulic pump station - Google Patents
Ultrahigh voltage electric hydraulic pump station Download PDFInfo
- Publication number
- CN203144016U CN203144016U CN 201320191101 CN201320191101U CN203144016U CN 203144016 U CN203144016 U CN 203144016U CN 201320191101 CN201320191101 CN 201320191101 CN 201320191101 U CN201320191101 U CN 201320191101U CN 203144016 U CN203144016 U CN 203144016U
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- oil
- pump
- valve
- plunger pump
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Abstract
The utility model discloses an ultrahigh voltage electric hydraulic pump station which comprises an oil tank (7), a prime mover (4), a reversing valve (1), a plunger pump (6), an integrated block (10) and a gear pump (5); the gear pump (5) is arranged in the oil tank (7) and is serially connected with the plunger pump (6) through a crank (12), wherein the oil inlet of the gear pump (5) is communicated with the oil tank (7) through an oil tube; and the oil outlet of the gear pump (5) is communicated with the oil outlet of the plunger pump (6) through a second oil tube (9). Due to the adoption of the structure, because the the gear pump has good self-priming capability and low cost, when the system executes high voltage, the gear pump is totally unloaded; when the system needs low voltage, the gear pump is opened, so that the pump station outputs a lot of low-voltage oil, the purposes of quickly feeding and retracting an oil cylinder are achieved, and the working efficiency of an actuating mechanism is greatly improved.
Description
Technical field
The utility model relates to the hydraulic technique field, specifically is a kind of extra-high pressure electric hydraulic power unit that is applicable to the superhigh pressure jack.
Background technology
The superhigh pressure jack is very important hydraulic tool in the industrial circle, and its pressure can reach more than the 70Mpa, is widely used in vehicle for construction, plastics machinery, mining machinery, construction machinery and equipment, industrial circles such as boats and ships, aviation, automobile, bridge, highway, metallurgy.The superhigh pressure jack is connected with the extra-high pressure electric hydraulic power unit usually, the extra-high pressure electric hydraulic power unit of prior art comprises change-over valve, fuel tank, primary mover, plunger pump and integrated package, plunger pump is positioned at fuel tank and is connected with primary mover, primary mover is installed on the fuel tank, change-over valve is installed on the integrated package, plunger pump is communicated with change-over valve by oil pipe, and the working end of change-over valve is connected with the superhigh pressure jack by oil pipe again.But there is following shortcoming in the extra-high pressure electric hydraulic power unit of this structure: because the delivery pressure of plunger pump is higher, can reach the high pressure of 70Mpa, because the existence of idle travel is arranged, pure dependence high-pressure oil feed, the little speed of flow is slower, still, when the jack rollback, because the flow of plunger pump is less, oil cylinder oil return at once, thus rollback is also very slow, therefore, the work efficiency of the actuating unit of jack and so on is just low.
The utility model content
Technical problem to be solved in the utility model is a kind of fast forwarding and fast rewinding that can realize oil cylinder to be provided, thereby to improve the extra-high pressure electric hydraulic power unit of the work efficiency of actuating unit.
For solving the problems of the technologies described above, the extra-high pressure electric hydraulic power unit that the utility model provides, comprise fuel tank, primary mover, change-over valve, plunger pump and integrated package, described plunger pump is positioned at fuel tank and is connected with primary mover, primary mover and integrated package are installed on the fuel tank, change-over valve is installed on the integrated package, plunger pump is communicated with change-over valve by first oil pipe, the working end of change-over valve is connected with actuating unit by oil pipe again, it also comprises gear type pump, described gear type pump is positioned at fuel tank and gear type pump is connected in series by bent axle and plunger pump, wherein the oil inlet of gear type pump is communicated with by oil pipe with fuel tank, and the oil outlet of gear type pump is communicated with the oil outlet of plunger pump by second oil pipe.
Also be communicated with the external control by pass valve on the described plunger pump, described external control by pass valve is installed on the integrated package, and the pilot port of external control by pass valve is communicated with the oil outlet of plunger pump, the oil inlet of external control by pass valve is communicated with the oil outlet of plunger pump by check valve, the return opening of external control by pass valve is communicated with fuel tank, and described check valve also is installed on the integrated package.
It also comprises high-pressure overflow valve, and described high-pressure overflow valve is installed on the integrated package and the oil inlet of high-pressure overflow valve communicates with the oil inlet of change-over valve, and the return opening of high-pressure overflow valve communicates with fuel tank.
After adopting above structure, the utility model compared with prior art has following advantage:
1) connected gear type pump again on plunger pump, because the suction capacity of gear type pump is good, cost is low, therefore, when system carried out high pressure, gear type pump was in complete unloading condition; When system needs low pressure, open gear type pump, make a large amount of low pressure oil of pumping plant output, thereby realize the purpose of oil cylinder fast forwarding and fast rewinding, improve the work efficiency of actuating unit greatly;
2) in addition, on plunger pump, also connected the external control by pass valve, the pilot pressure of external control by pass valve is set at 7MPa, therefore, when system needs low pressure, plunger pump can be exported low pressure oil fast by the external control by pass valve, thereby improves the speed of returning of actuating unit more, and then improves the work efficiency of actuating unit;
3) in addition, also be provided with another group high-pressure overflow valve in the system, guaranteed the reliability of system, system automatically switches to the high pressure conditions of setting if desired during high pressure, if then automatically switch to low-pressure state during low pressure, is applicable to very much the equipment of type frequently reciprocating.
Description of drawings
Fig. 1 is the hydraulic principle scheme drawing of the utility model extra-high pressure electric hydraulic power unit.
Fig. 2 is the structural representation of the utility model extra-high pressure electric hydraulic power unit.
Fig. 3 is the connection structure scheme drawing of plunger pump and gear type pump in the utility model.
Wherein, 1, change-over valve; 2, check valve; 3, external control by pass valve; 3.1, pilot port; 3.2, oil inlet; 3.3, return opening; 4, primary mover; 5, gear type pump; 6, plunger pump; 7, fuel tank; 8, first oil pipe; 9, second oil pipe; 10, integrated package; 11, high-pressure overflow valve; 12, bent axle.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
By the structural representation of the utility model extra-high pressure electric hydraulic power unit of Fig. 1～shown in Figure 3 as can be known, it comprises fuel tank 7, primary mover 4, change-over valve 1, plunger pump 6 and integrated package 10, described plunger pump 6 is positioned at fuel tank 7 and is connected with primary mover 4, primary mover 4 and integrated package 10 are installed on the fuel tank 7, change-over valve 1 is installed on the integrated package 10, plunger pump 6 is communicated with change-over valve 1 by first oil pipe 8, and the working end of change-over valve 1 is connected with actuating unit by oil pipe again.It also comprises gear type pump 5, described gear type pump 5 is positioned at fuel tank 7 and gear type pump 5 is connected in series by bent axle 12 and plunger pump 6, wherein the oil inlet of gear type pump 5 and fuel tank 7 are communicated with by oil pipe, and the oil outlet of gear type pump 5 is communicated with the oil outlet of plunger pump 6 by second oil pipe 9.
Also be communicated with external control by pass valve 3 on the described plunger pump 6, described external control by pass valve 3 is installed on the integrated package 10, and the pilot port 3.1 of external control by pass valve 3 is communicated with the oil outlet of plunger pump 6, the oil inlet 3.2 of external control by pass valve 3 is communicated with the oil outlet of plunger pump 6 by check valve 2, the return opening 3.3 of external control by pass valve 3 is communicated with fuel tank 7, and described check valve 2 also is installed on the integrated package 10.
It also comprises high-pressure overflow valve 11, and described high-pressure overflow valve 11 is installed on the integrated package 10 and the oil inlet of high-pressure overflow valve 11 communicates with the oil inlet of change-over valve 1, and the return opening of high-pressure overflow valve 11 communicates with fuel tank 7.Shown in Fig. 1, the high-pressure overflow valve 11 in the present embodiment is two, and its oil inlet all communicates with the oil inlet of change-over valve 1.
Working process of the present utility model is as follows:
Work as actuating unit, as jack, when needing F.F., pumping plant output high pressure oil, at this moment, gear type pump 5 is not worked, plunger pump 6 work output high pressure, its pressure can reach 70MPa, because the effect of check valve 2, its high pressure oil can not flow in gear type pump 5 or the external control by pass valve 3.
When actuating unit needed unloaded rewind down, pumping plant need be exported a large amount of low pressure oil, and at this moment, gear type pump 5 is started working, a large amount of low pressure oil of gear type pump 5 outputs; Plunger pump 6 is worked simultaneously, and plunger pump delivery pressure and gear type pump are suitable, so check valve 2 is in opening, external control by pass valve 3 is in closed condition.Plunger pump and gear type pump are together in series and provide low pressure oil to system, have guaranteed the rewind down purpose of actuating unit more.
Claims (3)
1. extra-high pressure electric hydraulic power unit, comprise fuel tank (7), primary mover (4), change-over valve (1), plunger pump (6) and integrated package (10), described plunger pump (6) is positioned at fuel tank (7) and is connected with primary mover (4), primary mover (4) and integrated package (10) are installed on the fuel tank (7), change-over valve (1) is installed on the integrated package (10), plunger pump (6) is communicated with change-over valve (1) by first oil pipe (8), the working end of change-over valve (1) is connected with actuating unit by oil pipe again, it is characterized in that: it also comprises gear type pump (5), described gear type pump (5) is positioned at fuel tank (7) and gear type pump (5) is connected in series by bent axle (12) and plunger pump (6), wherein the oil inlet of gear type pump (5) is communicated with by oil pipe with fuel tank (7), and the oil outlet of gear type pump (5) is communicated with the oil outlet of plunger pump (6) by second oil pipe (9).
2. extra-high pressure electric hydraulic power unit according to claim 1, it is characterized in that: also be communicated with external control by pass valve (3) on the described plunger pump (6), described external control by pass valve (3) is installed on the integrated package (10), and the pilot port (3.1) of external control by pass valve (3) is communicated with the oil outlet of plunger pump (6), the oil inlet (3.2) of external control by pass valve (3) is communicated with the oil outlet of plunger pump (6) by check valve (2), the return opening (3.3) of external control by pass valve (3) is communicated with fuel tank (7), and described check valve (2) also is installed on the integrated package (10).
3. extra-high pressure electric hydraulic power unit according to claim 1, it is characterized in that: it also comprises high-pressure overflow valve (11), described high-pressure overflow valve (11) is installed in integrated package (10) upward and the oil inlet of high-pressure overflow valve (11) communicates with the oil inlet of change-over valve (1), and the return opening of high-pressure overflow valve (11) communicates with fuel tank (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320191101 CN203144016U (en) | 2013-04-15 | 2013-04-15 | Ultrahigh voltage electric hydraulic pump station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320191101 CN203144016U (en) | 2013-04-15 | 2013-04-15 | Ultrahigh voltage electric hydraulic pump station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203144016U true CN203144016U (en) | 2013-08-21 |
Family
ID=48971560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320191101 Expired - Fee Related CN203144016U (en) | 2013-04-15 | 2013-04-15 | Ultrahigh voltage electric hydraulic pump station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203144016U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405706A (en) * | 2014-09-18 | 2015-03-11 | 芜湖高昌液压机电技术有限公司 | Double-pump relief circuit of scissor lift |
| CN107701535A (en) * | 2017-09-11 | 2018-02-16 | 雷沃重工股份有限公司 | A kind of tractor plunger pump oil suction pressurizing pack |
-
2013
- 2013-04-15 CN CN 201320191101 patent/CN203144016U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405706A (en) * | 2014-09-18 | 2015-03-11 | 芜湖高昌液压机电技术有限公司 | Double-pump relief circuit of scissor lift |
| CN107701535A (en) * | 2017-09-11 | 2018-02-16 | 雷沃重工股份有限公司 | A kind of tractor plunger pump oil suction pressurizing pack |
| CN107701535B (en) * | 2017-09-11 | 2024-04-19 | 潍柴雷沃智慧农业科技股份有限公司 | Oil pumping and pressurizing assembly for tractor plunger pump |
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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 |
Granted publication date: 20130821 Termination date: 20160415 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |