CN103089600A - Debugging device for variable displacement piston pump flow control valve - Google Patents
Debugging device for variable displacement piston pump flow control valve Download PDFInfo
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- CN103089600A CN103089600A CN2012104932082A CN201210493208A CN103089600A CN 103089600 A CN103089600 A CN 103089600A CN 2012104932082 A CN2012104932082 A CN 2012104932082A CN 201210493208 A CN201210493208 A CN 201210493208A CN 103089600 A CN103089600 A CN 103089600A
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Abstract
The invention provides a debugging device for a variable displacement piston pump flow control valve. The debugging device is characterized by comprising a variable displacement piston pump, wherein the variable displacement piston pump is connected together with a driving motor through a spline sleeve, the oil inlet of the variable displacement piston pump is connected with an oil tank, the oil outlet of the variable displacement piston pump is connected with the oil inlet of an electric proportional throttling valve assembly, the oil outlet of the electric proportional throttling valve assembly is connected with the oil inlet of an electric proportional cartridge valve, the oil outlet of the electric proportional cartridge valve is connected with an oil return filter element, and the oil return filter element is connected with the oil tank; and the electric proportional throttling valve assembly comprises an electric proportional throttling valve, an oil inlet pipeline of the electric proportional throttling valve is connected with a first pressure gauge, an oil outlet pipeline of the electric proportional throttling valve is connected with a second pressure gauge, a first flow meter is arranged on the oil inlet pipeline of the electric proportional throttling valve, and a second flow meter is arranged on the oil outlet pipeline of the electric proportional cartridge valve. The debugging device is simple in structure and convenient to operate, and can improve the working efficiency and reduce the test cost.
Description
Technical field
The present invention relates to a kind of debugging apparatus of variable piston pump flow control valve, belong to oil hydraulic pump series products technical field.
Background technique
Various variable piston pump flow control valves are all generally with first loading certain pressure to the plunger pump oil outlet, with the corresponding pressure of another pump supply flow control valve, obtaining the relation that pressure difference is come flow and the pressure of adjust flux control valve this moment.Along with the progress of technology, many Hydraulic Power Transmission Systems require the flows can be continuously or change with the variation of input signal pari passu.Utilize electromagnetic proportion throttle to solve preferably this demand.Proportional throttle valve is a kind of output quantity and the proportional hydrovalve of input signal (voltage or electric current), and it can control continuously in proportion by given input signal direction, pressure and the flow of fluid.
Summary of the invention
The debugging apparatus that the purpose of this invention is to provide a kind of variable piston pump flow control valve, it can carry out accurately and quick adjustment the variable piston pump flow control valve, realize that the flow of Hydraulic Power Transmission System can be continuously or change with the variation of input signal pari passu, satisfy technical requirements and the excavator demand different to power under different working modes, meet hydraulic excavator market to energy-saving and emission-reduction and can adapt to the requirement of various working pattern.
In order to achieve the above object, the invention provides a kind of debugging apparatus of variable piston pump flow control valve, it is characterized in that, comprise Variable plunger pump, Variable plunger pump links together by spline housing and drive motor, the filler opening of Variable plunger pump connects fuel tank, the oil outlet of Variable plunger pump connects the filler opening of electric proportional throttle valve assembly, the oil outlet of electricity proportional throttle valve assembly connects the filler opening of electric proportional cartridge valve, the oil outlet of electricity proportional cartridge valve connects the oil return filter core, and the oil return filter core connects fuel tank; Described electric proportional throttle valve assembly comprises electric proportional throttle valve, the in-line of electricity proportional throttle valve connects the first pressure gauge, the fuel-displaced pipeline of electricity proportional throttle valve connects the second pressure gauge, the in-line of electricity proportional cartridge valve is provided with the first flow meter, and the fuel-displaced pipeline of electric proportional cartridge valve is provided with the second flowmeter.
Preferably, described electric proportional throttle valve assembly also comprises relief valve, and relief valve connects the oil outlet of electric proportional throttle valve and Variable plunger pump.
Compared with prior art, advantage of the present invention is:
1, simple in structure, easy to operate, can increase work efficiency, reduce experimentation cost.
2, change the pre compressed magnitude of spring by the screw on the adjust flux control valve, can satisfy Hydraulic Power Transmission System and require the flow can be continuously or change with the variation of input signal pari passu, control accuracy be high, easily adjustment operation.
3, this debugging apparatus can mate with excavator or Other Engineering Variable plunger pump simulation mechanically.
Description of drawings
Fig. 1 is the debugging apparatus structural representation of variable piston pump flow control valve;
Wherein: 1-fuel tank, 2-drive motor, 3-Variable plunger pump, 4-relief valve, 5-the first pressure gauge, 6-electricity proportional throttle valve, 7-the second pressure gauge, 8-first flow meter, 9-electricity proportional cartridge valve, the 10, second flowmeter, 11-oil return filter core.
Embodiment
Illustrate the present invention below in conjunction with embodiment.
Embodiment
As shown in Figure 1, debugging apparatus structural representation for the variable piston pump flow control valve, the debugging apparatus of described variable piston pump flow control valve, comprise Variable plunger pump 3, Variable plunger pump 3 links together by spline housing and drive motor 2, the filler opening of Variable plunger pump 3 connects fuel tank 1, the oil outlet of Variable plunger pump 3 connects the filler opening of electric proportional throttle valve assembly, the oil outlet of electricity proportional throttle valve assembly connects the filler opening of electric proportional cartridge valve 9, the oil outlet of electricity proportional cartridge valve 9 connects oil return filter core 11, and oil return filter core 11 connects fuel tank 1.
Described electric proportional throttle valve assembly comprises electric proportional throttle valve 6, relief valve 4,2 pressure tap, 1 filler opening, 1 return opening and 1 oil outlet, and electric proportional throttle valve 6, relief valve 4 are respectively with an electromagnetic coil.2 pressure tap of electricity proportional throttle valve 6 are located at respectively on in-line and fuel-displaced pipeline, and connect respectively the first pressure gauge 5 and the second pressure gauge 7, and relief valve 4 connects the oil outlet of electric proportional throttle valve 6 and Variable plunger pump 3.The range of described the first pressure gauge 5 and the second pressure gauge 7 is 0-200bar.Described electric proportional cartridge valve 9 comprises cartridge valve assembly and 1 electromagnetic coil of 1 D40, and the in-line of electric proportional cartridge valve 9 is provided with first flow meter 8, and the fuel-displaced pipeline of electric proportional cartridge valve 9 is provided with the second flowmeter 10.
Take 063 Variable plunger pump as example, adopt the debugging apparatus of above-mentioned variable piston pump flow control valve, the adjustment method of explanatory variable plunger pump flow control valve is as follows:
At first, each parts of the debugging apparatus of variable piston pump flow control valve are coupled together according to Placement shown in Figure 1, then, carry out following steps:
1, at first relief valve 4 is set to safety value, is 200bar.
2, starting drive motor 2, is 1000r/min with speed setting, and the flow of Variable plunger pump 3 is that the flow of first flow meter 8 is 63L/min at this moment.
3, give 100%. with the electric current of electric proportional throttle valve 6
4, change electromagnetic coil F by changing electric current
Electromagnetic forceSize, the pressure that makes electric proportional cartridge valve 9 namely the pressure-loaded of the second pressure gauge 7 to 100bar, this moment Variable plunger pump 3 flow namely the second flowmeter 10 flows its do not change.
5, the input current I ratio of accurate adjustment electricity proportional throttle valve 6 is until the Q value has obvious decline, observe simultaneously the pressure of pressure-second pressure gauge 7 demonstrations of pressure differential deltap p=the first pressure gauge 5 demonstrations, if during Δ p＞18bar, the screw rod of flow control valve is transferred to Δ p=18 ± 1bar outward; In like manner during Δ p＜18bar, the screw rod of flow control valve is transferred to Δ p=18 ± 1bar inward;
6, during electric proportional throttle valve 6 input current I, according to principle
Wherein, Q is flow; A is orifice size; K is coefficient of colligation, and Δ p is pressure reduction, and Δ p is constant, Q ∝ A because A ∝ I, thus Q ∝ I, so can be easily can be continuously to flow Q or the requirement that changes with the variation of input signal pari passu according to the client, set pressure differential deltap p by regulating electric current.
According to principle
If can guarantee Δ p=C (C is constant), Q ∝ A.How key issue is that what scope Δ p will be controlled in, and regulates before dispatching from the factory that to put in place be a difficult point.The present invention is for a kind of reliable scheme that provides is provided.
Claims (2)
1. the debugging apparatus of a variable piston pump flow control valve, it is characterized in that, comprise Variable plunger pump (3), Variable plunger pump (3) links together by spline housing and drive motor (2), the filler opening of Variable plunger pump (3) connects fuel tank (1), the oil outlet of Variable plunger pump (3) connects the filler opening of electric proportional throttle valve assembly, the oil outlet of electricity proportional throttle valve assembly connects the filler opening of electric proportional cartridge valve (9), the oil outlet of electricity proportional cartridge valve (9) connects oil return filter core (11), oil return filter core (11) connects fuel tank (1), described electric proportional throttle valve assembly comprises electric proportional throttle valve (6), the in-line of electricity proportional throttle valve (6) connects the first pressure gauge (5), the fuel-displaced pipeline of electricity proportional throttle valve (6) connects the second pressure gauge (7), the in-line of electricity proportional cartridge valve (9) is provided with first flow meter (8), and the fuel-displaced pipeline of electric proportional cartridge valve (9) is provided with the second flowmeter (10).
2. the debugging apparatus of variable piston pump flow control valve as claimed in claim 1, it is characterized in that, described electric proportional throttle valve assembly also comprises relief valve (4), and relief valve (4) connects the oil outlet of electric proportional throttle valve (6) and Variable plunger pump (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104932082A CN103089600A (en) | 2012-11-28 | 2012-11-28 | Debugging device for variable displacement piston pump flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104932082A CN103089600A (en) | 2012-11-28 | 2012-11-28 | Debugging device for variable displacement piston pump flow control valve |
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| CN103089600A true CN103089600A (en) | 2013-05-08 |
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| CN2012104932082A Pending CN103089600A (en) | 2012-11-28 | 2012-11-28 | Debugging device for variable displacement piston pump flow control valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452958A (en) * | 2013-09-12 | 2013-12-18 | 中联重科股份有限公司 | Pressure valve debugging system |
| CN105041601A (en) * | 2015-07-31 | 2015-11-11 | 无锡市日升化工有限公司 | Oil pump used for chemical engineering |
| CN106438260A (en) * | 2016-11-07 | 2017-02-22 | 江苏恒立液压科技有限公司 | Electric proportional power control mechanism and control mode of hydraulic axial plunger pump |
| CN107676272A (en) * | 2017-09-14 | 2018-02-09 | 江苏大学 | A kind of fast adjuster of Working Conditions of Centrifugal Injection Pumps |
Citations (5)
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|---|---|---|---|---|
| GB1512332A (en) * | 1975-05-07 | 1978-06-01 | Linde Ag | Oil-cooled compressors |
| EP0057355A2 (en) * | 1981-02-04 | 1982-08-11 | Vickers Systems GmbH | Hydraulic lifting device |
| CN2923086Y (en) * | 2006-07-10 | 2007-07-18 | 江阴机械制造有限公司 | Small-radius bent-pipe propelling system of automatic speed following and pressure curve setting |
| CN101660519A (en) * | 2009-09-14 | 2010-03-03 | 浙江大学 | Electrical feedback electro-hydraulic proportional pressure flux compound control method and variable output pump |
| CN203009258U (en) * | 2012-11-28 | 2013-06-19 | 龙工（上海）桥箱有限公司 | Debugging device for variable-displacement piston pump flow control valve |
-
2012
- 2012-11-28 CN CN2012104932082A patent/CN103089600A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1512332A (en) * | 1975-05-07 | 1978-06-01 | Linde Ag | Oil-cooled compressors |
| EP0057355A2 (en) * | 1981-02-04 | 1982-08-11 | Vickers Systems GmbH | Hydraulic lifting device |
| CN2923086Y (en) * | 2006-07-10 | 2007-07-18 | 江阴机械制造有限公司 | Small-radius bent-pipe propelling system of automatic speed following and pressure curve setting |
| CN101660519A (en) * | 2009-09-14 | 2010-03-03 | 浙江大学 | Electrical feedback electro-hydraulic proportional pressure flux compound control method and variable output pump |
| CN203009258U (en) * | 2012-11-28 | 2013-06-19 | 龙工（上海）桥箱有限公司 | Debugging device for variable-displacement piston pump flow control valve |
Non-Patent Citations (2)
| Title |
|---|
| 庞俊峰: "插装式电液比例流量阀的特性研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》, no. 08, 15 August 2011 (2011-08-15), pages 029 - 25 * |
| 王伟等: "电液比例节流阀动态特性的试验研究", 《机床与液压》, vol. 39, no. 3, 28 February 2011 (2011-02-28) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452958A (en) * | 2013-09-12 | 2013-12-18 | 中联重科股份有限公司 | Pressure valve debugging system |
| CN103452958B (en) * | 2013-09-12 | 2016-06-08 | 中联重科股份有限公司 | Pressure valve debugging system |
| CN105041601A (en) * | 2015-07-31 | 2015-11-11 | 无锡市日升化工有限公司 | Oil pump used for chemical engineering |
| CN106438260A (en) * | 2016-11-07 | 2017-02-22 | 江苏恒立液压科技有限公司 | Electric proportional power control mechanism and control mode of hydraulic axial plunger pump |
| CN106438260B (en) * | 2016-11-07 | 2019-01-18 | 江苏恒立液压股份有限公司 | Hydraulic axial plunger pump electricity proportional power control mechanism and control mode |
| CN107676272A (en) * | 2017-09-14 | 2018-02-09 | 江苏大学 | A kind of fast adjuster of Working Conditions of Centrifugal Injection Pumps |
| CN107676272B (en) * | 2017-09-14 | 2019-05-31 | 江苏大学 | A kind of fast adjuster of Working Conditions of Centrifugal Injection Pumps |
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Application publication date: 20130508 |