CN201258884Y - Synchronous control system for lifting oil cylinder - Google Patents
Synchronous control system for lifting oil cylinder Download PDFInfo
- Publication number
- CN201258884Y CN201258884Y CNU2008201351005U CN200820135100U CN201258884Y CN 201258884 Y CN201258884 Y CN 201258884Y CN U2008201351005 U CNU2008201351005 U CN U2008201351005U CN 200820135100 U CN200820135100 U CN 200820135100U CN 201258884 Y CN201258884 Y CN 201258884Y
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- CN
- China
- Prior art keywords
- oil
- pressure
- oil cylinder
- cylinder
- valve
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- 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
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Abstract
The utility model provides a lifting oil cylinder synchronous control system which adopts a double extension shaft motor to drive two oil pumps with same standard and type and different rotation directions. The oil inlets of the two oil pumps are communicated respectively through a pipeline. The oil outlet of each oil pump is connected with a pressure filter. The high pressure oil pumped by each oil pump is led into two pipes after being filtrated: one pipe is connected with a pressure gauge and a proportional overflow valve, and then is connected with an oil tank through a pipeline. System pressure is adjusted automatically by the proportional overflow valve. The other pipe is communicated with an oil cylinder rod end chamber and a non-rod end chamber through a proportional directional valve. The oil inlet pipe of the oil cylinder is connected with a pressure measuring device. A grating ruler for detecting position is installed on the oil cylinder. The system adopts the proportional overflow valve, the proportional directional valve and the grating ruler to realize synchronous lifting location, has high precision, can meet the lifting requirement of the steel pipes with different standards, and has stable and reliable working performance.
Description
Technical field the utility model belongs to technical field of hydraulic, and specifically a kind of flat head chamfering machine that is used for is controlled the control system that oil cylinder rises synchronously or falls.
Background technique is in the tubulation production line, and a lot of operations need rise steel pipe or fall, and require high synchronously.Domestic traditional oil cylinder adopts throttle valve or big small oil tank series connection to realize that synchronous effect is poor, more and more can't satisfy the harsh requirement to precision synchronously synchronously.Therefore, developmental research steel pipe lowering or hoisting gear stable and reliable for performance has positive meaning to the development of tubulation industry.
The summary of the invention the purpose of this utility model provides and a kind ofly steel pipe can be risen synchronously and falls, picking-up cylinder synchronous control system stable and reliable for performance, that precision is high.
For achieving the above object, the technological scheme taked of the utility model is:
A kind of picking-up cylinder synchronous control system, adopt two specifications of a double extension shaft driven by motor, model is identical but oil pump that sense of rotation is different, the filler opening of two oil pumps is communicated with fuel tank by pipeline respectively, the oil outlet of each oil pump all is connected with a filter-press, the high pressure oil that each oil pump pumps is divided into two-way behind filter-press: the one tunnel connects pressure gauge and proportional pressure control valve, take back fuel tank by pipeline again, system pressure passing ratio relief valve is regulated automatically; Another road is communicated with cylinder rod chamber and rodless cavity respectively through the proportion directional valve, and the oil inlet pipe place of oil cylinder links to each other with a pressure-detecting device, and the grating chi of detection position is housed on the oil cylinder.
The above-mentioned picking-up cylinder synchronous control system that the utility model provides, owing to adopted proportional pressure control valve, proportion directional valve and grating chi to realize the synchronization lifting location, the precision height can satisfy the lifting requirement of different size steel pipe, stable and reliable working performance.
Description of drawings Fig. 1 is for holding up the cylinder synchronous control system schematic diagram
Among the figure: 1-fuel tank; 2-oil pump; 3-motor; 4-filter-press; 5-proportional pressure control valve; 6-pressure gauge; 7-proportion directional valve; 8-pressure-detecting device; 9-grating chi.
Embodiment is in the course of working of steel pipe, the lifting location of steel pipe depends on the synchronous picking-up device of two covers, picking-up device is configured to by a frame and a lifting V-type that leads on frame that is installed on the ground, the rise of lifting V-type frame and falling by hydraulic oil cylinder driving, in order to prevent steel pipe run-off the straight in lifting process, so the function that lifting V-type frame must have synchronous rise or fall is just very high to the synchronism requirement of oil cylinder lifting.
The picking-up cylinder synchronous control system that the utility model provides: adopt that a double extension shaft motor 3 drives two specifications, model is identical but oil pump 2 that sense of rotation is different, the filler opening of two oil pumps 2 is communicated with fuel tank 1 by pipeline respectively, the oil outlet of each oil pump 2 all is connected with a filter-press 4, the high pressure oil that each oil pump 2 pumps is divided into two-way behind filter-press 4: the one tunnel connects pressure gauge 6 and proportional pressure control valve 5, take back fuel tank 1 by pipeline again, system pressure passing ratio relief valve 5 is regulated automatically; Another road is communicated with cylinder rod chamber and rodless cavity through proportion directional valve 7, and grating chi 9 is housed on the oil cylinder, is used to detect oil cylinder position, and also is connected a pressure-detecting device 8 on the oil pipe that cylinder rod chamber and rodless cavity are communicated with, can observe the pressure changing of oil cylinder at any time.
The control procedure of this picking-up cylinder synchronous control system is: when two oil cylinders rise simultaneously, the oil cylinder rodless cavity oil-feed, the rod chamber oil return, numerical control system receives the signal of oil cylinder grating chi 9 feedbacks, by amplification to signal, the pressure that D/A transforms and relatively size is come control ratio relief valve 5, the valve core opening position of proportion directional valve 7, if it is little that the signal of grating chi feedback of oil cylinder A appears in comparative result, the position that oil cylinder A just is described is low, numerical control system is by the pressure of the proportional pressure control valve 5 (YV1) of adjusting oil cylinder A, the flow of oil pump 2 is controlled in the valve core opening position of proportion directional valve 7 (YV3), make speeding up of oil cylinder A rising, with the position consistency of oil cylinder B; Otherwise, then regulate the pressure of the proportional pressure control valve 5 (YV2) of oil cylinder B, the valve core opening position of proportion directional valve 7 (YV4).Oil cylinder A, oil cylinder B are in the rise process, and numerical control system is controlled the flow of oil pump all the time by the pressure of regulating proportional pressure control valve, the valve core opening position of proportion directional valve, thereby realize the synchronous operation of picking-up device.The control procedure that oil cylinder A, B fall synchronously and rise synchronously in like manner no longer describes in detail.
Above-described only is preferred embodiment of the present utility model.Should be understood that for the person of ordinary skill of the art, under technology enlightenment provided by the utility model, can also make other equivalent modifications and improvement, also should be considered as protection domain of the present utility model.
Claims (1)
1, a kind of picking-up cylinder synchronous control system, it is characterized in that: this system adopts two specifications of a double extension shaft driven by motor, model is identical but oil pump that sense of rotation is different, the filler opening of two oil pumps is communicated with fuel tank by pipeline respectively, the oil outlet of each oil pump all is connected with a filter-press, the high pressure oil that each oil pump pumps is divided into two-way behind filter-press: the one tunnel connects pressure gauge and proportional pressure control valve, take back fuel tank by pipeline again, system pressure passing ratio relief valve is regulated automatically; Another road is communicated with cylinder rod chamber and rodless cavity respectively through the proportion directional valve, and the oil inlet pipe place of oil cylinder links to each other with a pressure-detecting device, and the grating chi of detection position is housed on the oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201351005U CN201258884Y (en) | 2008-08-29 | 2008-08-29 | Synchronous control system for lifting oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201351005U CN201258884Y (en) | 2008-08-29 | 2008-08-29 | Synchronous control system for lifting oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201258884Y true CN201258884Y (en) | 2009-06-17 |
Family
ID=40773119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201351005U Expired - Fee Related CN201258884Y (en) | 2008-08-29 | 2008-08-29 | Synchronous control system for lifting oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201258884Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705283A (en) * | 2012-05-29 | 2012-10-03 | 中南大学 | Hydraulic synchronous system for realizing load balance based on proportional relief valve |
| CN102992224A (en) * | 2012-12-01 | 2013-03-27 | 江苏华宏科技股份有限公司 | Multi-hydraulic-cylinder electro-hydraulic synchronous lifting system |
| CN104154053A (en) * | 2014-07-18 | 2014-11-19 | 国家电网公司 | Main-cylinder hydraulic loop system |
-
2008
- 2008-08-29 CN CNU2008201351005U patent/CN201258884Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705283A (en) * | 2012-05-29 | 2012-10-03 | 中南大学 | Hydraulic synchronous system for realizing load balance based on proportional relief valve |
| CN102992224A (en) * | 2012-12-01 | 2013-03-27 | 江苏华宏科技股份有限公司 | Multi-hydraulic-cylinder electro-hydraulic synchronous lifting system |
| CN104154053A (en) * | 2014-07-18 | 2014-11-19 | 国家电网公司 | Main-cylinder hydraulic loop system |
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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: 20090617 Termination date: 20100829 |