CN201771734U - Hydraulic starting device of oil pump motor - Google Patents
Hydraulic starting device of oil pump motor Download PDFInfo
- Publication number
- CN201771734U CN201771734U CN2010202635745U CN201020263574U CN201771734U CN 201771734 U CN201771734 U CN 201771734U CN 2010202635745 U CN2010202635745 U CN 2010202635745U CN 201020263574 U CN201020263574 U CN 201020263574U CN 201771734 U CN201771734 U CN 201771734U
- Authority
- CN
- China
- Prior art keywords
- oil
- relief valve
- valve
- oil pump
- motor
- 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
Links
Images
Abstract
The utility model relates to a hydraulic starting device of an oil pump motor. The hydraulic starting device comprises an oil inlet way and an oil outlet way, wherein an electromagnetic relief valve is arranged between the oil inlet way and the oil outlet way. Before the motor is started, the electromagnetic relief valve is electrified then the motor is started, when the oil pressure of an oil outlet of the oil pump is more than the set pressure of the electromagnetic relief valve, hydraulic oil reflows into an oil tank through the electromagnetic relief valve. After the motor normally runs, the electromagnetic relief valve is not electrified and then the oil pressure of the hydraulic oil flowing out from the oil outlet of the oil pump is increased. The hydraulic starting device does not need a soft starter or a frequency converter, has low cost, reduces the starting torque of the motor and directly starts the motor of the oil pump.
Description
Technical field
The utility model relates to a kind of hydraulic pressure installation, especially a kind of Oil pump electrical machinery hydraulic starting device.
Background technique
The application of hydraulic system in equipment more and more widely.
The oil pump motor power that the small-sized hydraulic system uses is less, and inrush current is little, can directly start, the oil pump motor power that the large hydraulic system uses is bigger, and inrush current is big, should not directly start, often need to adopt soft initiator or frequency variator to start, increased the cost of equipment.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, a kind of soft initiator or frequency variator of not needing is provided, and cost is low, reduces the detent torque of motor, directly starts the hydraulic starting device of the Oil pump electrical machinery of Oil pump electrical machinery.
For achieving the above object, the utility model adopts following technical proposals:
A kind of Oil pump electrical machinery hydraulic starting device comprises oil-feed oil circuit and oil return circuit, connects an electromagnetic relief valve between oil-feed oil circuit and oil return circuit.
Described oil-feed oil circuit comprises motor, motor is connected with oil pump by transmission shaft, oil pump one end is located in the fuel tank, the other end is connected with the one-way valve I through the filter I, the one-way valve I is connected with oil outlet through ball valve, is connected with pressure gauge and electromagnetic relief valve respectively on the oil circuit between filter I and the one-way valve I.
Described oil return circuit comprises return opening, and return opening connects one-way valve II one end and filter II one end respectively, and the filter II the other end is connected with fuel tank, and the one-way valve II the other end is connected with the electromagnetic relief valve the other end.
Described electromagnetic relief valve comprises a relief valve and one or two two energising magnetic selector valve, relief valve one end is connected with the oil-feed oil circuit, two ends link to each other with the import of one-way valve II with the 2/2-way solenoid directional control valve respectively in addition, and the outlet of 2/2-way solenoid directional control valve links to each other with the one-way valve II.
Before the actuating motor, allow electromagnetic relief valve get electric work, actuating motor, when pressure that the oil pressure of oil pump oil outlet is set greater than electromagnetic relief valve, hydraulic oil flows back to fuel tank through electromagnetic relief valve.After motor ran well, to the electromagnetic relief valve outage, the hydraulic oil oil pressure that flows out through the oil pump oil outlet rose.
The utility model does not need soft initiator or frequency variator, and cost is low, reduces the detent torque of motor, directly starts Oil pump electrical machinery.
Description of drawings
Fig. 1 is the utility model hydraulic schematic diagram;
Wherein 1: motor, 2: transmission shaft, 3: oil pump, 4: filter I, 5: one-way valve I, 6: pressure gauge, 7: ball valve, 8: relief valve, 9: solenoid directional control valve, 10: fuel tank, 11: one-way valve II, 12: filter II, 13: oil outlet, 14: return opening.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, a kind of Oil pump electrical machinery hydraulic starting device comprises oil-feed oil circuit and oil return circuit, connects an electromagnetic relief valve between oil-feed oil circuit and oil return circuit.
The oil-feed oil circuit comprises motor 1, motor 1 is connected with oil pump 3 by transmission shaft 2, oil pump 3 one ends are located in the fuel tank 10, the other end is connected with one-way valve I 5 through filter I 4, one-way valve I 5 is connected with oil outlet 14 through ball valve 7, is connected with pressure gauge 6 and electromagnetic relief valve respectively on the oil circuit between filter I 4 and the one-way valve I 5.
Oil return circuit comprises return opening 14, and return opening 14 connects one-way valve II 11 1 ends and filter II 12 1 ends respectively, and filter II 12 the other ends are connected with fuel tank 10, and one-way valve II 11 the other ends are connected with the electromagnetic relief valve the other end.
Described electromagnetic relief valve comprises a relief valve 8 and one or two two energising magnetic selector valve 9, relief valve 8 one ends are connected with the oil-feed oil circuit, two ends link to each other with the import of one-way valve II 11 with 2/2-way solenoid directional control valve 9 respectively in addition, and the outlet of 2/2-way solenoid directional control valve 9 links to each other with one-way valve II 11.
Working procedure:
Start before oil pump 3 motor 1, regulate the threshold values (less than the pressure of the proper functioning of hydraulic station) of relief valve 8, the 2/2-way solenoid directional control valve 9 of electromagnetic relief valve is got, when the oil pressure of relief valve 8 filler openings during greater than the threshold values of relief valve 8, the working oil of relief valve 8 flows to the oil outlet of relief valve 8 through the conduction position of solenoid directional control valve 9, the effect of off-load is played in relief valve 8 beginning overflows.
Actuating motor 1, motor 1 drives oil pump 3 by transmission shaft 2 and rotates, being drawn up the hydraulic oil that comes filters through filter I 4, arrive the filler opening place of one-way valve I 5, because the threshold values of relief valve 8 is less, when hydraulic oil oil pressure during greater than the threshold values of relief valve 8, relief valve 8 beginning overflows, through one-way valve II 11, filter II 12 flows back to fuel tank 10 by the hydraulic oil of relief valve 8 overflows.Pressure gauge 6 detects the working pressure of oil pump 3.
After motor 1 runs well, give solenoid directional control valve 9 outages of the 2/2-way of electromagnetic relief valve, relief valve 8 working oil are switched to the off position through solenoid directional control valve 9, and relief valve 8 stops overflow (even the oil pressure of relief valve 8 filler openings is greater than threshold values of relief valve 8).This moment, the force value of pressure gauge 6 rose, and hydraulic oil is through the oil outlet 13 of one-way valve I 5, ball valve 7 arrival working oil, and the working oil that flows back to flows back to fuel tank 10 through return opening 14, filter II 12.
Claims (4)
1. an Oil pump electrical machinery hydraulic starting device is characterized in that: comprise oil-feed oil circuit and oil return circuit, connect an electromagnetic relief valve between oil-feed oil circuit and oil return circuit.
2. Oil pump electrical machinery hydraulic starting device according to claim 1, it is characterized in that: described oil-feed oil circuit comprises motor, motor is connected with oil pump by transmission shaft, oil pump one end is located in the fuel tank, the other end is connected with the one-way valve I through the filter I, the one-way valve I is connected with oil outlet through ball valve, is connected with pressure gauge and electromagnetic relief valve respectively on the oil circuit between filter I and the one-way valve I.
3. Oil pump electrical machinery hydraulic starting device according to claim 1, it is characterized in that: described oil return circuit comprises return opening, return opening connects one-way valve II one end and filter II one end respectively, the filter II the other end is connected with fuel tank, and the one-way valve II the other end is connected with the electromagnetic relief valve the other end.
4. Oil pump electrical machinery hydraulic starting device according to claim 1, it is characterized in that: described electromagnetic relief valve comprises a relief valve and one or two two energising magnetic selector valve, relief valve one end is connected with the oil-feed oil circuit, two ends link to each other with the import of one-way valve II with the 2/2-way solenoid directional control valve respectively in addition, and the outlet of 2/2-way solenoid directional control valve links to each other with the one-way valve II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202635745U CN201771734U (en) | 2010-07-20 | 2010-07-20 | Hydraulic starting device of oil pump motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202635745U CN201771734U (en) | 2010-07-20 | 2010-07-20 | Hydraulic starting device of oil pump motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201771734U true CN201771734U (en) | 2011-03-23 |
Family
ID=43751580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202635745U Expired - Fee Related CN201771734U (en) | 2010-07-20 | 2010-07-20 | Hydraulic starting device of oil pump motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201771734U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727020A (en) * | 2014-01-21 | 2014-04-16 | 上海神开石油化工装备股份有限公司 | Zero-pressure starting device |
| CN107630839A (en) * | 2017-10-25 | 2018-01-26 | 北京富力通达科技有限公司 | A kind of hydraulic pressure soft starting device and its application method |
| CN109798282A (en) * | 2019-01-25 | 2019-05-24 | 鼎斯（上海）液压科技有限公司 | Filter pumping hole valve block device and control method |
-
2010
- 2010-07-20 CN CN2010202635745U patent/CN201771734U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727020A (en) * | 2014-01-21 | 2014-04-16 | 上海神开石油化工装备股份有限公司 | Zero-pressure starting device |
| CN103727020B (en) * | 2014-01-21 | 2016-06-08 | 上海神开石油化工装备股份有限公司 | A kind of zero voltage starting device |
| CN107630839A (en) * | 2017-10-25 | 2018-01-26 | 北京富力通达科技有限公司 | A kind of hydraulic pressure soft starting device and its application method |
| CN109798282A (en) * | 2019-01-25 | 2019-05-24 | 鼎斯（上海）液压科技有限公司 | Filter pumping hole valve block device and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102518609B (en) | High Speed Punch Hydraulic System | |
| CN201771734U (en) | Hydraulic starting device of oil pump motor | |
| CN200982333Y (en) | Hydraulic pressure-keeping device of hydraulic clamp | |
| CN104533886A (en) | Non-load starting device and method for variable hydraulic pump | |
| CN201507505U (en) | Hydraulic station electromotor intermittent starting booster unit | |
| CN204852310U (en) | A double pump system for double clutch derailleur | |
| CN103899745A (en) | Parallel-connection two-position two-way valve type double-oil-way fast-oil-charging hydraulic gear shift system | |
| CN201269231Y (en) | Hydraulic system recirculation loop of bending machine | |
| CN205824148U (en) | Bull-dozer is with the novel automatically controlled speed change system of accumulation of energy pressure regulation | |
| CN203516263U (en) | Hydraulic circuit device | |
| CN202901111U (en) | Electronic control pneumatic clutch control device for vehicle | |
| CN204591232U (en) | Walking beam hydraulic-driven balance oil extractor | |
| CN203404143U (en) | Two-branch-cylinder simultaneous system controlled by proportional valve | |
| CN203362883U (en) | Automobile electronic clutch actuating mechanism controlled by computer | |
| CN203257772U (en) | Hydraulic bulldozer power generation device | |
| CN202468560U (en) | High-speed punching hydraulic loop of hydraulic punching machine | |
| CN202768246U (en) | Wind power hydraulic station using supercharger | |
| CN104776209B (en) | A kind of lubricating system of dual-clutch transmission | |
| CN204387297U (en) | The quick oil-filled hydraulic pressure shifting system of two oil circuits that a kind of pressure relay controls | |
| CN203922492U (en) | Hydraulic starting system and hoisting crane | |
| CN204569192U (en) | A kind of steel grasping machine power generation control and hydraulic efficiency pressure system thereof | |
| CN203516242U (en) | Hydraulic circuit device with two throttling valves | |
| CN202833364U (en) | Variable pump hydraulic circuit and engineering machinery | |
| CN102588393A (en) | High-speed punching hydraulic circuit of hydraulic punching machine | |
| CN202811602U (en) | Overflow module and overflow circuit and engineering machinery including overflow circuit |
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: 20110323 Termination date: 20130720 |