CN103640248A - Synchronous control system for two hydraulic cylinders of gantry hydraulic machine - Google Patents
Synchronous control system for two hydraulic cylinders of gantry hydraulic machine Download PDFInfo
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- CN103640248A CN103640248A CN201310570321.0A CN201310570321A CN103640248A CN 103640248 A CN103640248 A CN 103640248A CN 201310570321 A CN201310570321 A CN 201310570321A CN 103640248 A CN103640248 A CN 103640248A
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Abstract
The invention relates to a synchronous control system for two hydraulic cylinders of a gantry hydraulic machine. Grating rulers arranged in the two hydraulic cylinders transmit stroke parameters of the motion of the two hydraulic cylinders to corresponding control systems in real time, the control systems control corresponding flow of electronic flow control valves connected with the two hydraulic cylinders, and therefore, the two hydraulic cylinders can perform synchronous movement all the time. Compared with the existing conventional hydraulic control manners, the synchronous control system has the advantages of being high in synchronous precision and low in fault rate.
Description
Technical field
The present invention relates to hydraulic press, be specifically related to portal shaped hydraulic press double hydraulic cylinder synchronous control system, belong to hydraulic machinery technical field.
Background technology
Well-known: portal shaped hydraulic press is to realize work object by moving up and down of walking beam, and moving up and down of walking beam is two Driven by Hydraulic Cylinder by being fixed in the frame of walking beam two ends, so, from structure and the working method feature of portal shaped hydraulic press, two hydraulic cylinders that are fixed in the frame of walking beam two ends must guarantee synchronous working when work.
At present, although existing portal shaped hydraulic press is keeping the technological means of two hydraulic cylinder synchronous to be not quite similar,, be all generally that the means by hydraulic control realize, there is the defect that synchronization accuracy is poor, fault rate is higher.
Summary of the invention
The object of the invention is to: for the existing above-mentioned defect of existing portal shaped hydraulic press, the invention provides a kind of novel portal shaped hydraulic press double hydraulic cylinder synchronous control system, overcome two defects that hydraulic cylinder synchronous precision is poor, fault rate is higher of existing portal shaped hydraulic press.
The present invention realizes the technical scheme that above-mentioned purpose adopts: described portal shaped hydraulic press double hydraulic cylinder synchronous control system, it is by piston cylinder, grating scale, electronic flow control valve, total inflow pipeline, hydraulic flow control valve, total oil returning tube forms, it is characterized in that: the pressure chamber of two hydraulic cylinders is connected with total inflow pipeline by an electronic flow control valve respectively, the oil back chamber of two hydraulic cylinders is connected with total oil returning tube by a hydraulic flow control valve respectively, the piston rod centre of two described hydraulic cylinders is shaped with blind hole, crown center position at piston cylinder is mounted with grating scale, the bottom of described grating scale is deeply entered in the blind hole in piston rod centre.
Beneficial effect: in the present invention, be arranged on two grating scales in hydraulic cylinder the travel parameters of two hydraulic cylinders is passed to corresponding control system in real time, control system is by controlling the corresponding discharge of the electronic flow control valve being connected respectively with two hydraulic cylinders, guarantee that two hydraulic cylinders remain the state of being synchronized with the movement, so, by systematic schematic diagram of the present invention and operation principle, can be found out, the present invention compares with the means of existing conventional hydraulic control, have synchronization accuracy better, fault rate lower advantage.
Accompanying drawing explanation
Accompanying drawing is principle schematic of the present invention;
Shown in figure: 1, piston cylinder; 2, grating scale; 3, electronic flow control valve; 4, total inflow pipeline; 5, hydraulic flow control valve; 6, total oil return pipe; 7, blind hole.
The specific embodiment
Portal shaped hydraulic press double hydraulic cylinder synchronous control system of the present invention, it is by piston cylinder (1), grating (2), electronic flow control valve (3), total inflow pipeline (4), hydraulic flow control valve (5), total oil returning tube (6), the pressure chamber of two hydraulic cylinders (1) is connected with total inflow pipeline (4) by an electronic flow control valve (3) respectively, the oil back chamber of two hydraulic cylinders (1) is connected with total oil returning tube (6) by a hydraulic flow control valve (5) respectively, in the piston rod centre of two hydraulic cylinders (1), be shaped with blind hole (7), in the crown center position of piston cylinder (1), be mounted with grating scale (2), the bottom of grating scale (2) is deeply entered in the blind hole (7) in piston rod centre.
Claims (1)
1. a portal shaped hydraulic press double hydraulic cylinder synchronous control system, it is characterized in that: the pressure chamber of two hydraulic cylinders (1) is connected with total inflow pipeline (4) by an electronic flow control valve (3) respectively, the oil back chamber of two hydraulic cylinders (1) is connected with total oil returning tube (6) by a hydraulic flow control valve (5) respectively, in the piston rod centre of two hydraulic cylinders (1), be shaped with blind hole (7), in the crown center position of piston cylinder (1), be mounted with grating scale (2), the bottom of grating scale (2) is deeply entered in the blind hole (7) in piston rod centre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310570321.0A CN103640248A (en) | 2013-11-16 | 2013-11-16 | Synchronous control system for two hydraulic cylinders of gantry hydraulic machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310570321.0A CN103640248A (en) | 2013-11-16 | 2013-11-16 | Synchronous control system for two hydraulic cylinders of gantry hydraulic machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103640248A true CN103640248A (en) | 2014-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310570321.0A Pending CN103640248A (en) | 2013-11-16 | 2013-11-16 | Synchronous control system for two hydraulic cylinders of gantry hydraulic machine |
Country Status (1)
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| CN (1) | CN103640248A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86108883A (en) * | 1985-12-30 | 1987-08-12 | 霍尔比戈液压有限公司 | The synchronizing controls of multi-hydraulic-cylinder transmission |
| CN201344159Y (en) * | 2008-12-14 | 2009-11-11 | 天水锻压机床有限公司 | Combined oil cylinder synchronous hydraulic control system |
| CN201582232U (en) * | 2009-12-15 | 2010-09-15 | 天水锻压机床有限公司 | Hydraulic control system for coordinated use of proportional pump and electro-hydraulic proportional direction value with intermediate and small drift diameter |
| CN101865169A (en) * | 2010-06-09 | 2010-10-20 | 北京市三一重机有限公司 | Synchronous drive control system and engineering machinery |
| CN202573094U (en) * | 2012-03-30 | 2012-12-05 | 南通锻压设备股份有限公司 | Synchronous multiple-cylinder control device of hydraulic machine |
| CN102889272A (en) * | 2012-10-19 | 2013-01-23 | 南京工程学院 | Piezoelectric-electrohydraulic mixing driving arm and control method thereof |
| CN103334979A (en) * | 2013-07-23 | 2013-10-02 | 徐州重型机械有限公司 | Double hydraulic cylinder synchronous control system and engineering machine applying control system |
| CN203623015U (en) * | 2013-11-16 | 2014-06-04 | 苏州蓝王机床工具科技有限公司 | Double hydraulic cylinder synchronous control system of gantry hydraulic press |
-
2013
- 2013-11-16 CN CN201310570321.0A patent/CN103640248A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86108883A (en) * | 1985-12-30 | 1987-08-12 | 霍尔比戈液压有限公司 | The synchronizing controls of multi-hydraulic-cylinder transmission |
| CN201344159Y (en) * | 2008-12-14 | 2009-11-11 | 天水锻压机床有限公司 | Combined oil cylinder synchronous hydraulic control system |
| CN201582232U (en) * | 2009-12-15 | 2010-09-15 | 天水锻压机床有限公司 | Hydraulic control system for coordinated use of proportional pump and electro-hydraulic proportional direction value with intermediate and small drift diameter |
| CN101865169A (en) * | 2010-06-09 | 2010-10-20 | 北京市三一重机有限公司 | Synchronous drive control system and engineering machinery |
| CN202573094U (en) * | 2012-03-30 | 2012-12-05 | 南通锻压设备股份有限公司 | Synchronous multiple-cylinder control device of hydraulic machine |
| CN102889272A (en) * | 2012-10-19 | 2013-01-23 | 南京工程学院 | Piezoelectric-electrohydraulic mixing driving arm and control method thereof |
| CN103334979A (en) * | 2013-07-23 | 2013-10-02 | 徐州重型机械有限公司 | Double hydraulic cylinder synchronous control system and engineering machine applying control system |
| CN203623015U (en) * | 2013-11-16 | 2014-06-04 | 苏州蓝王机床工具科技有限公司 | Double hydraulic cylinder synchronous control system of gantry hydraulic press |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140319 |