CN201265567Y - Hydraulic twin-cylinder or multi-cylinder synchronous operation control system - Google Patents
Hydraulic twin-cylinder or multi-cylinder synchronous operation control system Download PDFInfo
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- CN201265567Y CN201265567Y CNU2008201861065U CN200820186106U CN201265567Y CN 201265567 Y CN201265567 Y CN 201265567Y CN U2008201861065 U CNU2008201861065 U CN U2008201861065U CN 200820186106 U CN200820186106 U CN 200820186106U CN 201265567 Y CN201265567 Y CN 201265567Y
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Abstract
The utility model relates to a hydraulic double-cylinder or multi-cylinder synchronous operation control systems which is combined with a hydraulic system and mainly consists of a rectifying plate, an electro-hydraulic proportional speed-regulating valve, hydraulic cylinder stroke detecting devices and a PLC. The oil feeding way of the hydraulic system is connected with the rectifying plate provided with the electro-hydraulic proportional speed-regulating valve, oil liquid enters hydraulic cylinders of the hydraulic system along the rectifying plate provided with the electro-hydraulic proportional speed-regulating valve, the hydraulic cylinder stroke detecting devices are arranged on each hydraulic cylinder and are responsible for inputting stroke detection signals to the PLC which inputs proportional speed-regulating signals to the electro-hydraulic proportional speed-regulating valve according to the received stroke detection signals so as to control the proportional speed-regulating valve to regulate the oil liquid flow. The control system can realize the synchronous and accurate operation of the double hydraulic cylinders or multiple hydraulic cylinders and improves the reliability and safety of the hydraulic system, and the control system has the advantages of high accuracy of synchronicity control and fast response speed.
Description
Technical field
The utility model relates to a kind of control system in order to twin-tub or multi-cylinder synchronous operation in the realization hydraulic system.
Background technique
In the transmission system of hydraulic double cylinder or multi-cylinder, synchronous operation control system is of crucial importance for Security, the reliability of equipment operation.The synchronous deviation correction control system that is widely adopted at present is mostly for flow synchronization control type, because this synchronous deviation correction control system has simple structure, easy to control, advantage that cost is lower.And flow synchronization control type deviation-rectifying system commonly used is the bypass type system that drains the oil in the industry, there is the defective that speed of response is slow, control accuracy is not high in this system in control procedure, particularly for heavy load, long stroke, scheduling is frequent or underbalance hydraulic double cylinder of equipment itself or multi-cylinder system, it can not adapt to preferably.This deviation-rectifying system must be judged the motion speed of each oil cylinder earlier in control procedure, then corresponding oil cylinder is drained the oil, in the process of draining the oil, the flow of draining the oil is difficult to control, the amount of draining the oil does not reach or when surpassing aequum, the not enough problem of system's correction precision is caused in the capital, does not reach the effect of correction, and the speed of correction response simultaneously is also low.
The model utility content
The utility model provides the synchronous operation control system of twin-tub in a kind of hydraulic system or multi-cylinder, this system can realize the synchronous precision operation of twin-tub or multi-cylinder, improve hydraulic system reliability of operation and Security, overcome that the existing speed of response of the synchronous deviation-rectifying system of the widely used flow control of present twin-tub or multicylinder hydraulic system is slow, control accuracy is not high and can not be adapted to heavy load, long stroke, dispatch the frequent hydraulic double cylinder or the defective of multi-cylinder system.
The technical solution adopted in the utility model is: the synchronous operation control system of a kind of hydraulic double cylinder or multi-cylinder, and it combines with hydraulic system, mainly is made up of current plate, electrohydraulic proportional velocity regulating valve, hydraulic cylinder travel detection device and PLC controller; Insert the current plate that has electrohydraulic proportional velocity regulating valve in the oil-feed oil circuit of hydraulic system, fluid will enter the oil hydraulic cylinder of hydraulic system via the current plate that has electrohydraulic proportional velocity regulating valve; Each oil hydraulic cylinder is provided with the hydraulic cylinder travel detection device, this device is responsible for to PLC controller input travel testing signal, to electrohydraulic proportional velocity regulating valve input proportionality velocity modulation signal, the control ratio series flow control valve is regulated its fluid flow to the PLC controller according to the stroke detection signal that receives.
The beneficial effects of the utility model are: this system is arranged in hydraulic double cylinder or the multi-cylinder system, can realize the synchronous precision operation of twin-tub or multi-cylinder, hydraulic system reliability of operation and Security have been improved greatly, particularly for heavy load, long stroke, scheduling is frequent or underbalance hydraulic double cylinder of equipment itself or multi-cylinder system, it can play good synchronization control effect.This system architecture is simple, and is easily manufactured, the synchronous control accuracy height, and speed of response is fast, also can control the motion speed of whole hydraulic system simultaneously automatically.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation that synchronous operation control system of the present utility model places hydraulic system.
1. current plates, 2. proportional velocity regulating valves, 3. hydraulic cylinder travel detection device 4.PLC controllers among the figure
Embodiment
As shown in Figure 1, synchronous operation control system of the present utility model combines with hydraulic system, and control system mainly is made up of current plate 1, electrohydraulic proportional velocity regulating valve 2, hydraulic cylinder travel detection device 3 and PLC controller 4; Insert the current plate 1 that has electrohydraulic proportional velocity regulating valve 2 in the oil-feed oil circuit of hydraulic system, fluid will enter the oil hydraulic cylinder of hydraulic system via the current plate 1 that has electrohydraulic proportional velocity regulating valve 2; Each oil hydraulic cylinder is provided with hydraulic cylinder travel detection device 3, this device is responsible for to PLC controller 4 input travel testing signals, to electrohydraulic proportional velocity regulating valve 2 input proportionality velocity modulation signals, control ratio series flow control valve 2 is regulated its fluid flow to PLC controller 4 according to the stroke detection signal that receives.
Each is controlled the motion speed of oil hydraulic cylinder by the electrohydraulic proportional velocity regulating valve that is attached thereto, the PLC controller will be according to the stroke detection signal that receives to electrohydraulic proportional velocity regulating valve input proportionality velocity modulation signal, it is the correspondent voltage value, each correspondence of different magnitude of voltage the fluid flow value that an electrohydraulic proportional velocity regulating valve is controlled, so the PLC controller is by just realizing the motion speed control to each oil hydraulic cylinder to the different magnitude of voltage of electrohydraulic proportional velocity regulating valve input.
When carrying out synchronization control, the PLC controller can be to constant magnitude of voltage A of one of them electrohydraulic proportional velocity regulating valve input as benchmark, input voltage to other electrohydraulic proportional velocity regulating valves is variables A ± Kx, and wherein K is the coefficient that the ratio of reference voltage level and progressive error is set, and x is a progressive error.The PLC controller only needs according to the stroke detection signal that receives, make the magnitude of voltage that different traveled distance deviations can be calculated to be needed the input of other electrohydraulic proportional velocity regulating valves, thereby the control electrohydraulic proportional velocity regulating valve is regulated the flow of its control, realizes the closed loop synchronous operation of oil hydraulic cylinder.
Claims (1)
1. the synchronous operation control system of hydraulic double cylinder or multi-cylinder, it combines with hydraulic system, it is characterized in that: mainly be made up of current plate (1), electrohydraulic proportional velocity regulating valve (2), hydraulic cylinder travel detection device (3) and PLC controller (4); Insert the current plate (1) that has electrohydraulic proportional velocity regulating valve (2) in the oil-feed oil circuit of hydraulic system, fluid will enter the oil hydraulic cylinder of hydraulic system via the current plate that has electrohydraulic proportional velocity regulating valve (2) (1); Each oil hydraulic cylinder is provided with hydraulic cylinder travel detection device (3), this device is responsible for to PLC controller (4) input travel testing signal, to electrohydraulic proportional velocity regulating valve (2) input proportionality velocity modulation signal, control ratio series flow control valve (2) is regulated its fluid flow to PLC controller (4) according to the stroke detection signal that receives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201861065U CN201265567Y (en) | 2008-10-13 | 2008-10-13 | Hydraulic twin-cylinder or multi-cylinder synchronous operation control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201861065U CN201265567Y (en) | 2008-10-13 | 2008-10-13 | Hydraulic twin-cylinder or multi-cylinder synchronous operation control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201265567Y true CN201265567Y (en) | 2009-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201861065U Expired - Fee Related CN201265567Y (en) | 2008-10-13 | 2008-10-13 | Hydraulic twin-cylinder or multi-cylinder synchronous operation control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201265567Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441589A (en) * | 2011-09-02 | 2012-05-09 | 北京机械工业自动化研究所 | Temper mill on-line roll changing cylinder synchronous control system and control method |
| CN103047206A (en) * | 2013-01-09 | 2013-04-17 | 浙江大学 | Fast synchronization hydraulic system for segment assembling lifting motion |
| CN104912856A (en) * | 2015-06-16 | 2015-09-16 | 南通市腾达锻压机床厂 | Double oil cylinder synchronous servo control system device |
| CN105020192A (en) * | 2015-07-30 | 2015-11-04 | 中国重型机械研究院股份公司 | Novel steel ladle lifting synchronous control system |
| CN105402179A (en) * | 2015-12-28 | 2016-03-16 | 安徽马钢自动化信息技术有限公司 | Automatic balancing control system and method for plurality of hydraulic cylinders of continuous beam blank casting tundish |
| CN108252971A (en) * | 2017-12-25 | 2018-07-06 | 四川大唐国际甘孜水电开发有限公司 | Hydroelectric power plant's double lifting point oil cylinder of hydraulic headstock gear travel synchronization automatic correction method |
| CN108869423A (en) * | 2017-06-22 | 2018-11-23 | 马鞍山钢铁股份有限公司 | Synchronisation control means based on continuous casting production lifting hydraulic cylinder synchronous control system |
-
2008
- 2008-10-13 CN CNU2008201861065U patent/CN201265567Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441589A (en) * | 2011-09-02 | 2012-05-09 | 北京机械工业自动化研究所 | Temper mill on-line roll changing cylinder synchronous control system and control method |
| CN102441589B (en) * | 2011-09-02 | 2013-12-11 | 北京机械工业自动化研究所 | Temper mill on-line roll changing cylinder synchronous control system and control method |
| CN103047206A (en) * | 2013-01-09 | 2013-04-17 | 浙江大学 | Fast synchronization hydraulic system for segment assembling lifting motion |
| CN103047206B (en) * | 2013-01-09 | 2015-03-11 | 浙江大学 | Fast synchronization hydraulic system for segment assembling lifting motion |
| CN104912856A (en) * | 2015-06-16 | 2015-09-16 | 南通市腾达锻压机床厂 | Double oil cylinder synchronous servo control system device |
| CN105020192A (en) * | 2015-07-30 | 2015-11-04 | 中国重型机械研究院股份公司 | Novel steel ladle lifting synchronous control system |
| CN105402179A (en) * | 2015-12-28 | 2016-03-16 | 安徽马钢自动化信息技术有限公司 | Automatic balancing control system and method for plurality of hydraulic cylinders of continuous beam blank casting tundish |
| CN105402179B (en) * | 2015-12-28 | 2018-10-16 | 安徽马钢自动化信息技术有限公司 | Packet multi-hydraulic-cylinder automatic balance control system and method in continuous beam blank casting |
| CN108869423A (en) * | 2017-06-22 | 2018-11-23 | 马鞍山钢铁股份有限公司 | Synchronisation control means based on continuous casting production lifting hydraulic cylinder synchronous control system |
| CN108869423B (en) * | 2017-06-22 | 2020-03-27 | 马鞍山钢铁股份有限公司 | Synchronous control method based on synchronous control system of lifting hydraulic cylinder of continuous casting tundish |
| CN108252971A (en) * | 2017-12-25 | 2018-07-06 | 四川大唐国际甘孜水电开发有限公司 | Hydroelectric power plant's double lifting point oil cylinder of hydraulic headstock gear travel synchronization automatic correction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090701 Termination date: 20161013 |
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| CF01 | Termination of patent right due to non-payment of annual fee |