CN201198822Y - Super high-pressure hydraulic pump - Google Patents
Super high-pressure hydraulic pump Download PDFInfo
- Publication number
- CN201198822Y CN201198822Y CNU2008200868086U CN200820086808U CN201198822Y CN 201198822 Y CN201198822 Y CN 201198822Y CN U2008200868086 U CNU2008200868086 U CN U2008200868086U CN 200820086808 U CN200820086808 U CN 200820086808U CN 201198822 Y CN201198822 Y CN 201198822Y
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- CN
- China
- Prior art keywords
- pump
- oil
- plunger pump
- plunger
- pressure
- 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
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Abstract
The utility model discloses a super-pressure hydraulic pump which comprises a plunger pump (6); wherein, the main shaft (7) of the plunger pump (6) is connected with a gear pump (1), the oil outlet (2) of which is connected with the oil-suction inlet. After adopting the structure, because the oil-suction inlet of the plunger pump is connected with the oil outlet of the gear pump, when the load of the plunger pump is over and needs a high rotating speed, oil suction is not enough, at this time the gear pump can carry out oil make-up enforcedly, thus outputting the high-pressure oil.
Description
Technical field
The utility model relates to a kind of hydraulic-pressure pump, specifically is a kind of ultrahigh-pressure hydraulic pump that the supporting system pressure of the various Hydraulic power toolss of power line construction construction is higher than 30MPa that is used for.
Background technique
During power line construction is built, cut off at lead, continue, often will use Hydraulic power tools in the operation such as section bar punching, these instruments all will be equipped with hydraulic power supply, existing hydraulic power supply mostly is high-pressure plunger pump greatly, comprise pump casing, pump shaft, end cap, at least one radially pays towards the plunger of pump shaft setting, plunger is paid by spring and eccentric wheel and is close to, and eccentric wheel is fixed on the pump shaft, and pump shaft is connected on the pump housing and the end cap by bearing.But, shortcoming below this radial plunger pump exists: because the input speed of this plunger pump is lower, when load is big, objectively need the rotating speed of pump shaft big, if but greater than its maximum (top) speed, then the oil suction time of plunger pump inlet opening is short, cause plunger pump oil suction deficiency, can produce the not enough phenomenon of plunger pump output oil pressure, so, can not output system pressure greater than the high pressure oil of 30MPa.
The model utility content
Technical problem to be solved in the utility model is that a kind of ultrahigh-pressure hydraulic pump that can export greater than the high pressure oil of 30MPa is provided.
For solving the problems of the technologies described above, the ultrahigh-pressure hydraulic pump that the utility model provides comprises plunger pump, is connected with gear pump on the main shaft of described plunger pump, and the oil outlet of described gear pump is connected with the inlet port of plunger pump.
After adopting above structure, owing on the inlet port of plunger pump, connected the oil outlet of gear pump, the oil suction that inlet port produces when the high rotating speed of the bigger needs of load of plunger pump foot phenomenon not can be avoided by the pressure repairing of gear pump like this, thereby reaches the requirement of output high pressure oil.
As improvement, be connected with gear pump on the main shaft of described plunger pump, be meant that the main shaft of plunger pump and the main shaft of gear pump are one.After adopting this structure, make whole hydraulic pressure pump structure simpler, main shaft rotates more stable.
As further improvement, the oil outlet of described gear pump is connected with the inlet port of plunger pump, is meant on the oil outlet of gear pump to be connected with tee union, in two other hydraulic fluid port of described tee union, one is connected with the inlet port of plunger pump, also has one to be connected with relief valve.After adopting this structure, utilize tee union between the inlet port of the oil outlet of gear pump and plunger pump, to be provided with a relief valve, when the output oil pressure of gear pump is too high, can come balance, can guarantee that more the oil suction of plunger pump is steady, make the plunger pump operation more stable by relief valve.
Description of drawings
Fig. 1 is the utility model ultrahigh-pressure hydraulic pump structure schematic representation;
Fig. 2 is the hydraulic schematic diagram of the utility model ultrahigh-pressure hydraulic pump.
Wherein, 1, gear pump; 2, oil outlet; 3, relief valve; 4, tee union; 5, inlet port; 6, plunger pump; 7, main shaft.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
By the utility model ultrahigh-pressure hydraulic pump structure schematic representation shown in Figure 1 as can be known, this ultrahigh-pressure hydraulic pump comprises plunger pump 6, be connected with gear pump 1 on the main shaft 7 of described plunger pump 6, be meant that the main shaft of plunger pump 6 and the main shaft of gear pump 1 are one, also can be connected the main shaft of the main shaft of plunger pump 6 by coupling with gear pump 1.The oil outlet 2 of described gear pump 1 is connected with the inlet port 5 of plunger pump 6, be meant on the oil outlet 2 of gear pump 1 and be connected with tee union 4, in two other hydraulic fluid port of described tee union 4, one is connected with the inlet port 5 of plunger pump 6, also has one to be connected with relief valve 3.
By the hydraulic schematic diagram of the utility model ultrahigh-pressure hydraulic pump shown in Figure 2 as can be known, the hydraulic oil that gear pump 1 sucks after filtering is delivered to the inlet port of plunger pump 6 after the pressurization, and when induced pressure was light, pressure oil was directly exported; When load is heavier, the output after plunger pump 6 pressurizations of the pressure oil of gear pump 1 output, this moment, relief valve 3 released unnecessary hydraulic oil, thereby guaranteed the delivery pressure of hydraulic oil.
Claims (3)
1. a ultrahigh-pressure hydraulic pump comprises plunger pump (6), it is characterized in that: be connected with gear pump (1) on the main shaft (7) of described plunger pump (6), the oil outlet (2) of described gear pump (1) is connected with the inlet port (5) of plunger pump (6).
2. ultrahigh-pressure hydraulic pump according to claim 1 is characterized in that: be connected with gear pump (1) on the main shaft (7) of described plunger pump (6), be meant that the main shaft of plunger pump (6) and the main shaft of gear pump (1) are one.
3. ultrahigh-pressure hydraulic pump according to claim 1, it is characterized in that: the oil outlet (2) of described gear pump (1) is connected with the inlet port (5) of plunger pump (6), be meant on the oil outlet (2) of gear pump (1) and be connected with tee union (4), in two other hydraulic fluid port of described tee union (4), one is connected with the inlet port (5) of plunger pump (6), also has one to be connected with relief valve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200868086U CN201198822Y (en) | 2008-05-13 | 2008-05-13 | Super high-pressure hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200868086U CN201198822Y (en) | 2008-05-13 | 2008-05-13 | Super high-pressure hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201198822Y true CN201198822Y (en) | 2009-02-25 |
Family
ID=40449978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200868086U Expired - Fee Related CN201198822Y (en) | 2008-05-13 | 2008-05-13 | Super high-pressure hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201198822Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865107A (en) * | 2010-07-02 | 2010-10-20 | 张银根 | Ultrahigh voltage hydraulic pump station |
| CN103477065A (en) * | 2011-04-08 | 2013-12-25 | 罗伯特·博世有限公司 | Pump unit for supplying fuel, preferably diesel fuel, from a fuel tank to an internal combustion engine |
| CN104234966A (en) * | 2013-06-20 | 2014-12-24 | 扬州市宝元机械制造有限公司 | Hydraulic pump |
-
2008
- 2008-05-13 CN CNU2008200868086U patent/CN201198822Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865107A (en) * | 2010-07-02 | 2010-10-20 | 张银根 | Ultrahigh voltage hydraulic pump station |
| CN101865107B (en) * | 2010-07-02 | 2012-07-18 | 张银根 | Ultrahigh voltage hydraulic pump station |
| CN103477065A (en) * | 2011-04-08 | 2013-12-25 | 罗伯特·博世有限公司 | Pump unit for supplying fuel, preferably diesel fuel, from a fuel tank to an internal combustion engine |
| CN104234966A (en) * | 2013-06-20 | 2014-12-24 | 扬州市宝元机械制造有限公司 | Hydraulic pump |
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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: 20090225 Termination date: 20120513 |