CN103775439A - Hydraulic pump station - Google Patents

Hydraulic pump station Download PDF

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Publication number
CN103775439A
CN103775439A CN201210395626.8A CN201210395626A CN103775439A CN 103775439 A CN103775439 A CN 103775439A CN 201210395626 A CN201210395626 A CN 201210395626A CN 103775439 A CN103775439 A CN 103775439A
Authority
CN
China
Prior art keywords
oil
valve
outlet
pressure column
pump
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.)
Pending
Application number
CN201210395626.8A
Other languages
Chinese (zh)
Inventor
张春来
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TIANJIN ZELONG INSTRUMENT AND NON-FERROUS METAL CASTING Co Ltd
Original Assignee
TIANJIN ZELONG INSTRUMENT AND NON-FERROUS METAL CASTING Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TIANJIN ZELONG INSTRUMENT AND NON-FERROUS METAL CASTING Co Ltd filed Critical TIANJIN ZELONG INSTRUMENT AND NON-FERROUS METAL CASTING Co Ltd
Priority to CN201210395626.8A priority Critical patent/CN103775439A/en
Publication of CN103775439A publication Critical patent/CN103775439A/en
Pending legal-status Critical Current

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Abstract

The invention provides a hydraulic pump station which comprises a pump unit and an oil tank. The pump unit comprises an oil pump and a motor. An inlet of the oil pump is connected with the oil tank. The oil pump adopts a six-plunger-inclined-disc-type axial plunger two-oil-channel pump, and three low-pressure plunger rods and three high-pressure plunger rods which are arranged alternatively compensate with each other to achieve automatic pressure change and automatic oil return. An outlet of the oil pump is divided into two branches behind a one-way valve, and a plurality of oil outlet ports are formed. The hydraulic pump station has the advantage that a two-way oil channel is adopted, and reversing is conducted through a reversing valve. When a two-way action oil cylinder is used for a jack with a spring return stroke, the other way of the reversing valve can be closed, and two or four jacks or hydraulic devices can be driven simultaneously.

Description

A kind of hydraulic power unit
Technical field
The present invention relates to oil hydraulic pump technical field, relate in particular to a kind of hydraulic power unit.
Background technique
In the prior art, the oil outlet of hydraulic power unit is less, and is unidirectional oil circuit, can not drive two or four jack or hydraulic tools simultaneously; Or because of its function requirement, its volume is very large, weight ratio is heavier, in the process of application, will have some limitations.
Summary of the invention
For the problems referred to above, the problem to be solved in the present invention is to provide a kind of hydraulic power unit with two-way oil circuit.
Technological scheme of the present invention is as follows:
A kind of hydraulic power unit, comprise pump assembly and fuel tank, described pump assembly comprises oil pump and motor, the import connected tank of described oil pump, described oil pump is two oil duct pumps, described oily delivery side of pump is divided into two branch roads after one-way valve, the first branch road connects the import of a solenoid directional control valve, an outlet of described solenoid directional control valve is exported as oil-feed port through Pilot operated check valve and stacked unidirectional throttle valve, another outlet is exported as return opening through Pilot operated check valve and stacked unidirectional throttle valve, draws the fuel tank through stop valve on described oil outlet; The second branch road connects the import of a solenoid directional control valve through stacked compression release valve, one outlet connected tank of described stacked compression release valve, an outlet of described solenoid directional control valve is exported as oil-feed port through stacked unidirectional throttle valve, and another outlet is exported as return opening through stacked unidirectional throttle valve; In the import of described the first branch road, draw a road and connect electromagnetic relief valve, an outlet connected tank of described electromagnetic relief valve.
In the outlet of the one-way valve that further, described pump assembly outlet port connects, draw the branch road that connects electromagnetic relief valve, electromagnetic relief valve connected tank.
Further, in the import of the stacked compression release valve on described the second branch road and outlet, be all connected to pressure gauge.
Further, in the fuel tank that described oil pump inlet connects, be provided with air-strainer, fuel tank outside is provided with level meter.
Further, described oil pump adopts the two oil duct pumps of six plunger sloping plate formula axial plungers, comprise three lower pressure column stopper rods of inclined disc type main shaft, alternate setting and three high-pressure column stopper rods, the lower pressure column plug sleeve of lower pressure column stopper rod outside, high-pressure column plug sleeve, the low pressure fuel sucking pipe of lower pressure column plug sleeve bottom and the high pressure fuel sucking pipe of high-pressure column plug sleeve bottom of high-pressure column stopper rod outside, described inclined disc type main shaft is arranged on the top of three lower pressure column stopper rods and three high-pressure column stopper rods; Described oil pump uses low pressure and mass flow in the time that pressure is less than 18Mpa; In the time that pressure is greater than 18Mpa, use high-pressure low-flow, pressure is moved pressure certainly according to load variations.
Beneficial effect of the present invention is: owing to adopting technique scheme, there is two-way oil circuit, commutate by selector valve, when convenient bidirectional action oil cylinder is used for having the jack of spring return, can, by another of selector valve to closing, can drive two or four jack or hydraulic tools simultaneously; Than with the hydraulic power unit of power lightweight, volume is little, it is mobile, convenient for all kinds of hydraulic tools to be convenient to carrying.
Accompanying drawing explanation
Fig. 1 is hydraulic schematic diagram of the present invention;
Fig. 2 is the side sectional view of oil pump of the present invention;
Fig. 3 is the sectional view above of oil pump of the present invention.
Wherein: 1, fuel tank 2, oil pump 3, one-way valve
4, solenoid directional control valve 5, Pilot operated check valve 6, stacked unidirectional throttle valve
7, stacked compression release valve 8, stop valve 9, electromagnetic relief valve
10, relief valve 11, pressure gauge 12, air-strainer
13, level meter 14, inclined disc type main shaft 15, high-pressure column stopper rod
16, high-pressure column plug sleeve 17, high pressure fuel sucking pipe 18, lower pressure column stopper rod
19, lower pressure column plug sleeve 20, low pressure fuel sucking pipe 21, oil drain out
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiment of one of the present invention is made to brief description.
As shown in Figure 1:
A kind of hydraulic power unit, comprises pump assembly and fuel tank 1, and described pump assembly comprises oil pump 2 and motor, the import connected tank 1 of described oil pump 2, and described oil pump 2 adopts the two oil duct pumps of six plunger sloping plate formula axial plungers; The outlet of described oil pump 2 is divided into two branch roads after one-way valve 3, the first branch road connects the import of a solenoid directional control valve 4, an outlet of described solenoid directional control valve 4 is exported as oil-feed port through Pilot operated check valve 5 and stacked unidirectional throttle valve 6, another outlet is exported as return opening through Pilot operated check valve 5 and stacked unidirectional throttle valve 6, draws the fuel tank 1 through stop valve 8 on described oil outlet; The second branch road connects the import of a solenoid directional control valve 4 through stacked compression release valve 7, one outlet connected tank 1 of described stacked compression release valve 7, an outlet of described solenoid directional control valve 4 is exported as oil-feed port through stacked unidirectional throttle valve 6, and another outlet is exported as return opening through stacked unidirectional throttle valve 6; In the import of described the first branch road, draw a road and connect electromagnetic relief valve 9, an outlet connected tank 1 of described electromagnetic relief valve 9;
In the outlet of the one-way valve 3 that described oil pump 2 outlet ports connect, draw the branch road that connects relief valve 10, relief valve 10 connected tanks 1;
In the import of the stacked compression release valve 6 on described the second branch road and outlet, be all connected to pressure gauge 11;
In the fuel tank 1 that described oil pump 2 inlets connect, be provided with air-strainer 12, fuel tank 1 outside is provided with level meter 13.
Described oil pump 2 adopts the two oil duct pumps of six plunger sloping plate formula axial plungers, comprise three lower pressure column stopper rods 18 of inclined disc type main shaft 14, alternate setting and three high-pressure column stopper rods 15, the lower pressure column plug sleeve 19 of lower pressure column stopper rod 18 outsides, high-pressure column plug sleeve 16, the low pressure fuel sucking pipe 20 of lower pressure column plug sleeve 18 bottoms and the high pressure fuel sucking pipe 17 of high-pressure column plug sleeve 16 bottoms of high-pressure column stopper rod 15 outsides, described inclined disc type main shaft 14 is arranged on the top of three lower pressure column stopper rods 18 and three high-pressure column stopper rods 15.
When idle stroke, use low pressure and mass flow, use high-pressure low-flow when working stroke, can obtain large pressure tonnage (500 tons), now, from moving pressure automatic oil return, described oil pump 2 uses low pressure and mass flow in the time that pressure is less than 18Mpa; In the time that pressure is greater than 18Mpa, use high-pressure low-flow, pressure is moved pressure certainly according to load variations.
Above one embodiment of the present of invention are had been described in detail, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalization variation and improvement etc. of doing according to the present patent application scope, within all should still belonging to patent covering scope of the present invention.

Claims (5)

1. a hydraulic power unit, comprise pump assembly and fuel tank, described pump assembly comprises oil pump and motor, the import connected tank of described oil pump, it is characterized in that: described oil pump is two oil duct pumps, described oily delivery side of pump is divided into two branch roads after one-way valve, the first branch road connects the import of a solenoid directional control valve, an outlet of described solenoid directional control valve is exported as oil-feed port through Pilot operated check valve and stacked unidirectional throttle valve, another outlet is exported as return opening through Pilot operated check valve and stacked unidirectional throttle valve, draws the fuel tank through stop valve on described oil outlet; The second branch road connects the import of a solenoid directional control valve through stacked compression release valve, one outlet connected tank of described stacked compression release valve, an outlet of described solenoid directional control valve is exported as oil-feed port through stacked unidirectional throttle valve, and another outlet is exported as return opening through stacked unidirectional throttle valve; In the import of described the first branch road, draw a road and connect electromagnetic relief valve, an outlet connected tank of described electromagnetic relief valve.
2. hydraulic power unit according to claim 1, is characterized in that: in the outlet of the one-way valve that described oil pump outlet port connects, draw the branch road that connects electromagnetic relief valve, electromagnetic relief valve connected tank.
3. hydraulic power unit according to claim 1, is characterized in that: in the import of the stacked compression release valve on described the second branch road and outlet, be all connected to pressure gauge.
4. hydraulic power unit according to claim 1, is characterized in that: in the fuel tank that described oil pump inlet connects, be provided with air-strainer, fuel tank outside is provided with level meter.
5. hydraulic power unit according to claim 1, it is characterized in that: described oil pump adopts the two oil duct pumps of six plunger sloping plate formula axial plungers, comprise three lower pressure column stopper rods of inclined disc type main shaft, alternate setting and three high-pressure column stopper rods, the lower pressure column plug sleeve of lower pressure column stopper rod outside, high-pressure column plug sleeve, the low pressure fuel sucking pipe of lower pressure column plug sleeve bottom and the high pressure fuel sucking pipe of high-pressure column plug sleeve bottom of high-pressure column stopper rod outside, described inclined disc type main shaft is arranged on the top of three lower pressure column stopper rods and three high-pressure column stopper rods.
CN201210395626.8A 2012-10-17 2012-10-17 Hydraulic pump station Pending CN103775439A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210395626.8A CN103775439A (en) 2012-10-17 2012-10-17 Hydraulic pump station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210395626.8A CN103775439A (en) 2012-10-17 2012-10-17 Hydraulic pump station

Publications (1)

Publication Number Publication Date
CN103775439A true CN103775439A (en) 2014-05-07

Family

ID=50568059

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210395626.8A Pending CN103775439A (en) 2012-10-17 2012-10-17 Hydraulic pump station

Country Status (1)

Country Link
CN (1) CN103775439A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104632788A (en) * 2014-12-30 2015-05-20 大连维乐液压制造有限公司 Stepping mechanism hydraulic station
CN104948534A (en) * 2015-06-12 2015-09-30 中国农业大学 Agricultural vehicle-mounted hydraulic pump station

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104632788A (en) * 2014-12-30 2015-05-20 大连维乐液压制造有限公司 Stepping mechanism hydraulic station
CN104948534A (en) * 2015-06-12 2015-09-30 中国农业大学 Agricultural vehicle-mounted hydraulic pump station

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Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20140507

C02 Deemed withdrawal of patent application after publication (patent law 2001)