CN102996576A - Selecting and determining method of hydraulic pump of hydraulic system - Google Patents
Selecting and determining method of hydraulic pump of hydraulic system Download PDFInfo
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- CN102996576A CN102996576A CN2012104673730A CN201210467373A CN102996576A CN 102996576 A CN102996576 A CN 102996576A CN 2012104673730 A CN2012104673730 A CN 2012104673730A CN 201210467373 A CN201210467373 A CN 201210467373A CN 102996576 A CN102996576 A CN 102996576A
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- oil hydraulic
- hydraulic
- pump
- hydraulic pump
- pressure
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Abstract
The invention discloses a selecting and determining method of a hydraulic pump of a hydraulic system. The selecting and determining method comprises the following steps of: calculating the maximum working pressure value of a hydraulic motor, and calculating the total loss valve of a pipeline from an outlet of the hydraulic pump to an inlet of a hydraulic cylinder or the hydraulic motor, wherein the loss of the pipeline is calculated while an element is selected and a pipeline drawing is drawn; adding the maximum working pressure valve of the hydraulic motor and the loss value of the pipeline so as to determine the maximum working pressure of the hydraulic pump; when a plurality of hydraulic cylinders or hydraulic motors act at the same time, calculating the maximum total flow rate of the hydraulic cylinders of the hydraulic motors acting at the same time, so as to determine the flow rate of the hydraulic pump, wherein if a throttling speed regulating system is provided, the minimum overflowing rate of an overflowing valve is required to be taken into account; and selecting the specification of the hydraulic cylinder according to the previous two steps, wherein the rated pressure of a selected pump is 60% more than the maximum working pressure in order to provide certain pressure reserve for the hydraulic pump. The selecting and determining method has the beneficial effects that the action precision of a machine is improved, the wearing circumstance is reduced, the service life is prolonged, a machine body can be stressed in a assisting way and the like.
Description
Technical field
The present invention relates to the hydraulics field, method is determined in the selection that relates in particular to a kind of oil hydraulic pump of hydraulic system.
Background technique
Hydraulic system has that power is large, working pressure and the flow adjustability is good, heat can be brought back the advantages such as fuel tank, adopt hydraulic system to produce more power than other devices, under equal power, the volume of hydraulic pressure installation is little, lightweight, specific power large, compact structure; Simultaneously, the hydraulic pressure installation Comparision is steady because lightweight, inertia is little, reaction is fast, hydraulic pressure installation is easy to realize quick startup, braking and commutating frequently.Hydraulic Power Transmission System is a constituent element of hydraulic machinery, the design of Hydraulic Power Transmission System will be carried out simultaneously with the general arrangement of main frame, when setting about designing, must proceed from reality, organically in conjunction with various type of belt drive, give full play to hydraulicdriven advantage, make every effort to design simple in structure, reliable operation, cost is low, efficient is high, simple to operate, easy to maintenance Hydraulic Power Transmission System.But existing hydraulic system transmitting assemblies exists a lot of problems from operating method, working method, numerous and diverse different amount such as structure, and this causes work poor efficiency, heavier, the high expensive of weight of equipment.
Summary of the invention
But the purpose of this invention is to provide a kind of balanced load, can improve hydraulic work efficient, selection simple in structure, that can reduce the oil hydraulic pump of labor intensity, the auxiliary hydraulic system that improves the equipment operation ability determines method, to solve many deficiencies of prior art.
Purpose of the present invention is come specific implementation by the following technical programs:
Method is determined in a kind of selection of oil hydraulic pump of hydraulic system, mainly is comprised of following:
⑴ at first, calculate the oil hydraulic motor maximum service pressure, and export to total line loss between oil hydraulic cylinder or the oil hydraulic motor entrance from oil hydraulic pump, line loss wherein carries out in the time of will treating that element is selected and draw piping diagram, with oil hydraulic motor maximum service pressure and line loss addition, determine the maximum service pressure of oil hydraulic pump;
⑵ when multi-hydraulic-cylinder or oil hydraulic motor are worked simultaneously, calculate the oil hydraulic cylinder of simultaneously action or the maximum total discharge of oil hydraulic motor then, determines the flow of oil hydraulic pump, if comprise Metering Flow Control Circuits, also must add the minimum overflow amount of overflow valve;
⑶ select the hydraulic pressure pump size according to above two steps, for making oil hydraulic pump certain pressure deposit arranged, and the rated pressure of selected pump is than maximum service pressure large 60%;
⑷ last, determines the driving power of oil hydraulic pump.
The selection of the oil hydraulic pump of hydraulic system of the present invention determines that the beneficial effect of method is: by this mode, can satisfy comprehensively and accurately the various technological requirements of pressing component, be conducive to improve the machine movement precision and reduce abrasion condition, can increase the service life and the auxiliary machine power etc. of experiencing; Simultaneously, be conducive to adapt to the demand of transportation, installation, accent frame, can improve the operation controllability, reduce labor intensity.
Embodiment
Method is determined in the selection of the oil hydraulic pump of the described hydraulic system of the embodiment of the invention, and its key step comprises:
⑴ at first, calculate the oil hydraulic motor maximum service pressure, and export to total line loss between oil hydraulic cylinder or the oil hydraulic motor entrance from oil hydraulic pump, line loss wherein carries out in the time of will treating that element is selected and draw piping diagram, with oil hydraulic motor maximum service pressure and line loss addition, determine the maximum service pressure of oil hydraulic pump;
⑵ when multi-hydraulic-cylinder or oil hydraulic motor are worked simultaneously, calculate the oil hydraulic cylinder of simultaneously action or the maximum total discharge of oil hydraulic motor then, determines the flow of oil hydraulic pump, if comprise Metering Flow Control Circuits, also must add the minimum overflow amount of overflow valve;
⑶ select the hydraulic pressure pump size according to above two steps, for making oil hydraulic pump certain pressure deposit arranged, and the rated pressure of selected pump is than maximum service pressure large 60%;
⑷ last, determines the driving power of oil hydraulic pump.
Claims (1)
1. method is determined in the selection of the oil hydraulic pump of a hydraulic system, it is characterized in that, mainly is comprised of following steps:
⑴ at first, calculate the oil hydraulic motor maximum service pressure, and export to total line loss between oil hydraulic cylinder or the oil hydraulic motor entrance from oil hydraulic pump, line loss wherein carries out in the time of will treating that element is selected and draw piping diagram, with oil hydraulic motor maximum service pressure and line loss addition, determine the maximum service pressure of oil hydraulic pump;
⑵ when multi-hydraulic-cylinder or oil hydraulic motor are worked simultaneously, calculate the oil hydraulic cylinder of simultaneously action or the maximum total discharge of oil hydraulic motor then, determines the flow of oil hydraulic pump, if comprise Metering Flow Control Circuits, also must add the minimum overflow amount of overflow valve;
⑶ select the hydraulic pressure pump size according to above two steps, for making oil hydraulic pump certain pressure deposit arranged, and the rated pressure of selected pump is than maximum service pressure large 60%;
⑷ last, determines the driving power of oil hydraulic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104673730A CN102996576A (en) | 2012-11-19 | 2012-11-19 | Selecting and determining method of hydraulic pump of hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104673730A CN102996576A (en) | 2012-11-19 | 2012-11-19 | Selecting and determining method of hydraulic pump of hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102996576A true CN102996576A (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104673730A Pending CN102996576A (en) | 2012-11-19 | 2012-11-19 | Selecting and determining method of hydraulic pump of hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102996576A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216055A (en) * | 2008-01-18 | 2008-07-09 | 美的集团有限公司 | Control device and control method of hydraulic drive motor |
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2012
- 2012-11-19 CN CN2012104673730A patent/CN102996576A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216055A (en) * | 2008-01-18 | 2008-07-09 | 美的集团有限公司 | Control device and control method of hydraulic drive motor |
Non-Patent Citations (2)
| Title |
|---|
| 李晶洁: "装载机工作装置液压系统的节能研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 闫利文 等: "《液压与气压传动》", 31 March 2011, 国防工业出版社 * |
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Application publication date: 20130327 |