CN204942119U - Hydraulic synchronization closed-loop control device in hydraulic three-roller plate roll - Google Patents
Hydraulic synchronization closed-loop control device in hydraulic three-roller plate roll Download PDFInfo
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- CN204942119U CN204942119U CN201520719379.1U CN201520719379U CN204942119U CN 204942119 U CN204942119 U CN 204942119U CN 201520719379 U CN201520719379 U CN 201520719379U CN 204942119 U CN204942119 U CN 204942119U
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- crossbeam
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Abstract
The utility model discloses the hydraulic synchronization closed-loop control device </b> in a kind of liquid <b> pressure type three rolls plate bending machine that three rolls plate bending machine master cylinder is synchronized with the movement, it solve the problem of the hydraulic cylinder synchronization accuracy difference existed in original technology, it is characterized in that: described hydraulic synchronous control system is by electro-hydraulic reversing valve (1), diverter valve (3), one-way valve (2, 4) servovalve (5) and sensor and controller assemblies (6), crossbeam (7), the oil hydraulic cylinder (8 at upper roller of three-roller plate roll two ends, 9) the element composition such as, displacement transducer is connected on crossbeam, electrohydraulic control (5) carries out bypass according to the feedback signal of position error detection and drains the oil, realize accurate synchronization control.This hydraulic synchronous control system has rational in infrastructure, makes simple, can obtain the advantages such as driving that are synchronized with the movement of degree of precision.The hydraulic element of dimension can be changed according to the difference of three rolls plate bending machine power, the control that three rolls plate bending machine master cylinder is synchronized with the movement can be widely used in.
Description
Technical field
The present invention is applied to the Synchronous motion control of hydraulic three-roller plate roll, and three rolls plate bending machine carries out the bending moulding lathe of continuity point to sheet material, is widely used in the industries such as shipbuilding, boiler, aviation, Structural Hardware and machine-building.
Background technique
The Synchronous motion control of Present Domestic hydraulic three-roller plate roll top roll master cylinder, more adopts open loop synchronization control.The hydraulic synchronous system of opened loop control, servoelement is there is not in hydraulic system, rely on the precision of hydraulic control component (as synchronous valve, all kinds of throttle valve or series flow control valve) itself synchronous to the output quantity controlling executive component completely, can not carry out detecting to the output quantity of executive component and feed back, synchronization accuracy is not high, and can not eliminate in time according to the change of output quantity or suppress the impact on synchronization accuracy unfavorable factor.
Summary of the invention
Object of the present invention for three rolls plate bending machine market provide a kind of rational in infrastructure, make hydraulic synchronization closed loop control that is simple, high efficiency, low cost.
Technological scheme of the present invention: the hydraulic synchronization closed-loop control device in this kind of hydraulic three-roller plate roll is made up of elements such as electro-hydraulic reversing valve, diverter valve, one-way valve, electrohydraulic control and sensor and controller assemblies, crossbeam, oil hydraulic cylinders, and the model specification of oil hydraulic cylinder is identical.Displacement transducer is connected on crossbeam, is detected the situation that is synchronized with the movement of hydraulic cylinder piston by the change in location detecting wire rope.Electrohydraulic control carries out bypass according to the feedback signal of position error detection and drains the oil, and realizes accurate synchronization control.
The detailed process of synchronization control is: when the left position of electro-hydraulic reversing valve, and the pressure oil of in-line is through the left position → diverter valve of electro-hydraulic reversing valve → respectively to oil hydraulic cylinder epicoele, and the piston synchronous of oil hydraulic cylinder is descending.Oil return is now through the left position → fuel tank of oil hydraulic cylinder cavity of resorption → electro-hydraulic reversing valve.
When hydraulic cylinder piston motion occurs that position is asynchronous, connecting cross beam tilts, wire rope displacement changes, after sensor detects the change in displacement signal of wire rope, amplify through signal, control electrohydraulic control, make wherein to move part fluid that is more or the very fast side oil hydraulic cylinder that moves and discharge through electrohydraulic control, make the displacement of the oil hydraulic cylinder on both sides consistent with motion.
When the right position of electro-hydraulic reversing valve, oil hydraulic cylinder is up.During electro-hydraulic reversing valve meta, system unloaded.Diverter valve in hydraulic system is used for coarse synchronization and controls, and throttle valve here plays back pressure valve.
The position of electrohydraulic control, not on working connection, during work, is carried out bypass according to the feedback signal of position error detection and is drained the oil.The small flow of the flow passed through due to electrohydraulic control just correction, therefore the electrohydraulic control of selection of small latus rectum can realize regulation and control, reduce and control cost.
Beneficial effect of the present invention is:
(1) this hydraulic synchronous control system is closed loop control system, can realize automatic control.
(2) compare stoste and press off ring synchronous control system, this hydraulic synchronous control system speed of response is accelerated, and can obtain higher synchronization accuracy.
(3) making of this hydraulic synchronous control system is simple, cost is low, facilitates feasible.
Below in conjunction with accompanying drawing, the invention will be further described:
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
In figure: 1 is electro-hydraulic reversing valve, 3 is diverter valve, and 2,4 are all one-way valve, and 5 is electrohydraulic control, and 6 is sensor and controller assemblies, and 7 is crossbeam, and 8,9 is oil hydraulic cylinder.
Embodiment
As shown in the figure, hydraulic synchronization closed-loop control device in hydraulic three-roller plate roll is by frame, the parts such as Double-hydraulic master cylinder and synchronizing control are formed, described hydraulic synchronization control mechanism is by electro-hydraulic reversing valve 1, diverter valve 3, one-way valve 2, one-way valve 4, electrohydraulic control 5 and displacement transducer and controller assemblies 6, crossbeam 7, the oil hydraulic cylinder 8 at upper roller of three-roller plate roll two ends, 9 compositions such as element such as grade, displacement transducer is connected on crossbeam, this crossbeam 7 is arranged on hydraulic cylinder piston rod lower end, the two ends of wire rope connect with spring through static pulley, the situation that is synchronized with the movement of hydraulic cylinder piston is detected by the change in location detecting wire rope.Electrohydraulic control 5 is arranged on auxiliary oil way, carries out bypass and drains the oil, realize accurate synchronization control according to the feedback signal of position error detection.
When electro-hydraulic reversing valve 1 left, the pressure oil of in-line is through the left position → diverter valve of electro-hydraulic reversing valve 13 → respectively to oil hydraulic cylinder 8,9 epicoele, and the piston synchronous of oil hydraulic cylinder 8,9 is descending.Oil return is now through the left position → fuel tank of oil hydraulic cylinder cavity of resorption → electro-hydraulic reversing valve 1.
When electro-hydraulic reversing valve 1 right, oil hydraulic cylinder 8,9 up.During electro-hydraulic reversing valve 1 meta, system unloaded.Diverter valve 3 in hydraulic system controls for coarse synchronization, and throttle valve 2,4 here plays back pressure valve.
When oil hydraulic cylinder 8,9 moves asynchronous, connecting cross beam 7 tilts, wire rope displacement changes, after sensor detects the change in displacement signal of wire rope, amplify through signal, control electrohydraulic control 5, make wherein to move part fluid that is more or the very fast side oil hydraulic cylinder that moves and discharge through electrohydraulic control 5, make the displacement of the oil hydraulic cylinder 8,9 on both sides consistent with motion.
The position of electrohydraulic control 5, not on main in-line, also not on main oil circuit, during work, is carried out bypass according to the feedback signal of position error detection and is drained the oil.Due to the small flow of the flow that passes through just correction, therefore the electrohydraulic control of selection of small latus rectum can realize regulation and control, thus reduce and control cost.
Claims (2)
1. the hydraulic synchronization closed-loop control device in a hydraulic three-roller plate roll, it comprises frame, Double-hydraulic master cylinder and synchronizing control, it is characterized in that: described hydraulic synchronization control mechanism is by electro-hydraulic reversing valve (1), diverter valve (3), one-way valve (2, 4), electrohydraulic control (5) and displacement transducer and controller assemblies (6), crossbeam (7), the oil hydraulic cylinder (8 at upper roller of three-roller plate roll two ends, 9) element composition, displacement transducer is connected on crossbeam, the situation that is synchronized with the movement of hydraulic cylinder piston is detected by the change in location detecting wire rope, electrohydraulic control (5) carries out bypass according to the feedback signal of position error detection and drains the oil, realize accurate synchronization control.
2. the hydraulic synchronization closed-loop control device in hydraulic three-roller plate roll according to claim 1, it is characterized in that: described hydraulic pressure closed-loop synchronization motion control mechanism is arranged on hydraulic cylinder piston rod lower end for the crossbeam (7) detected, and the two ends of wire rope are after static pulley connects with spring; Electrohydraulic control (5) is arranged on auxiliary oil way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520719379.1U CN204942119U (en) | 2015-09-11 | 2015-09-11 | Hydraulic synchronization closed-loop control device in hydraulic three-roller plate roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520719379.1U CN204942119U (en) | 2015-09-11 | 2015-09-11 | Hydraulic synchronization closed-loop control device in hydraulic three-roller plate roll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204942119U true CN204942119U (en) | 2016-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520719379.1U Expired - Fee Related CN204942119U (en) | 2015-09-11 | 2015-09-11 | Hydraulic synchronization closed-loop control device in hydraulic three-roller plate roll |
Country Status (1)
| Country | Link |
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| CN (1) | CN204942119U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089824A (en) * | 2016-08-17 | 2016-11-09 | 南通超力卷板机制造有限公司 | A kind of hydraulic system of two roller rolling machines |
-
2015
- 2015-09-11 CN CN201520719379.1U patent/CN204942119U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089824A (en) * | 2016-08-17 | 2016-11-09 | 南通超力卷板机制造有限公司 | A kind of hydraulic system of two roller rolling machines |
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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: 20160106 Termination date: 20160911 |
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| CF01 | Termination of patent right due to non-payment of annual fee |