CN204386968U - Casting machine speed hydraulic control system - Google Patents
Casting machine speed hydraulic control system Download PDFInfo
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- CN204386968U CN204386968U CN201420765921.2U CN201420765921U CN204386968U CN 204386968 U CN204386968 U CN 204386968U CN 201420765921 U CN201420765921 U CN 201420765921U CN 204386968 U CN204386968 U CN 204386968U
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Abstract
The utility model discloses a kind of casting machine speed hydraulic control system, comprise oil hydraulic cylinder (1), oil pump (2), the motor (3) driving described oil pump (2) to work, the fuel tank (4) that is connected with the filler opening of described oil pump (2), it also comprises: the flowmeter (5) be connected with the oil outlet of described oil hydraulic cylinder (1); The oil outlet being communicated in described flowmeter (5) also can make the flow control device (6) of feedback to described flowmeter (5).The utility model is by arranging flowmeter and flow control device, and the effect of adjustment hydraulic fluid flow rate is in real time reached by the feedback effect of flowmeter to flow control device, can accurate flow control, need not artificial intervention be carried out, reach the object realizing automatically controlling.And the reliability of this control system is high, and rate of fault is lower.
Description
Technical field
The utility model relates to industrial production technology field, particularly relates to a kind of casting machine speed hydraulic control system.
Background technique
Casting is one of fundamental technology of modern mechanical manufacturing industry.Casting is as a kind of metal fever processing technology, progressively ripe in China's development.Semicontinuous vertical casting is the main forging type of the billet (rod) of cast aluminium alloy large gauge slab ingot and major diameter scope.To be exactly application material flowing deformation principle be cast as the slab ingot of certain size, billet or hollow cast ingot by alloy melt by crystallizer, image taking head with semicontinuous casting machine, for hot rolling or forging and stamping or extruding production provide the production equipment special of blank.Hydraulic casting machine is the good class casting machine of reliability.
In casting process, the control of casting speed is extremely important, usually determine the quality of foundry goods, in the process of casting, need to control the speed of casting at any time, therefore speed control system needs the pressure bearing larger intensity, in the prior art, need to make casting machine realize the operation of rising or declining by artificial operation, the effect accurately controlled cannot be reached, only can rely on artificial micro-judgment, the accurate control to casting speed cannot be realized, effect is unsatisfactory, and the difficult quality of product is protected.
Therefore, for a person skilled in the art, how designing a kind of system that accurately can realize controlling casting machine speed, do not need the lifting of manual control casting machine, is those skilled in the art's technical issues that need to address.
Model utility content
The purpose of this utility model is to provide a kind of casting machine speed hydraulic control system, and this system can realize automatically controlling the speed of casting machine, reaches the effect accurately controlling casting machine speed.
For solving the problems of the technologies described above, the utility model provides a kind of casting machine speed hydraulic control system, and comprise oil hydraulic cylinder, oil pump, the motor of the described operation of oil pump of drive, the fuel tank that is connected with the filler opening of described oil pump, it also comprises:
The flowmeter be connected with the oil outlet of described oil hydraulic cylinder;
Be communicated in the oil outlet of described flowmeter, can hydraulic control oil flow the flow control device of feedback can be made described flowmeter.
Preferably, also comprise and being arranged between described flow control device and described fuel tank, and for the stopper of oil circuit control break-make.
Preferably, described flow counts screw rod flowmeter, mass flowmenter or volumetric gear flow meter.
Preferably, described flow control device is based on stepper motor Flow valve, describedly can feed back described screw rod flowmeter based on stepper motor Flow valve, and by the size of the hydraulic fluid flow rate in PLC program control loop.
Preferably, also comprise and to be connected with described oil pump and the selector valve of described oil hydraulic cylinder rise and fall can be controlled.
Preferably, also comprise in parallel with described selector valve, the oil feeding device be connected with described oil pump oil outlet; One end and described selector valve are parallel to the oil outlet of described oil pump, the relief valve that the other end is connected with described fuel tank.
Preferably, described selector valve is solenoid directional control valve.
Preferably, two described oil pumps are driven to provide power for whole system by described motor.
Preferably, the filter be arranged at respectively between described oil hydraulic cylinder and described flowmeter, between described relief valve and described fuel tank is also comprised.
Preferably, the pressure gauge be arranged between described selector valve and described oil pump on loop is also comprised.
Casting machine speed hydraulic control system provided by the utility model, comprise oil hydraulic cylinder, oil pump, the motor of drive operation of oil pump, the fuel tank that is connected with the filler opening of oil pump, it also comprises: the flowmeter be connected with the oil outlet of oil hydraulic cylinder; Be communicated in the oil outlet of flowmeter and flow meter makes the flow control device of feedback; To be connected with oil pump and can the selector valve of hydraulic control cylinder rise and fall.
When needs are cast, first by oil pump, hydraulic oil in fuel tank is injected in oil hydraulic cylinder, makes oil hydraulic cylinder be in higher position, then close the loop of oil pump and oil hydraulic cylinder.Make hydraulic oil in oil hydraulic cylinder successively by flowmeter and flow control device again, reached the effect of hydraulic control cylinder rate of descent by the feedback of flowmeter to flow control device, achieve the closed-loop feedback of hydraulic pipe line.
The utility model is by arranging flowmeter and flow control device, and the effect of adjustment hydraulic fluid flow rate is in real time reached by the feedback effect of flowmeter to flow control device, can accurate flow control, realize oil hydraulic cylinder steadily to decline, need not artificial intervention be carried out, reach the object realizing automatically controlling.And the reliability of this control system is high, and rate of fault is lower.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the pipeline schematic diagram of a kind of concrete mode of execution of casting machine speed hydraulic control system provided by the utility model.
Wherein:
Oil hydraulic cylinder 1, oil pump 2, motor 3, fuel tank 4, flowmeter 5, flow control device 6, selector valve 7, oil feeding device 8, relief valve 9, pressure gauge 10, stopper 11, filter 12.
Embodiment
The purpose of this utility model is to provide a kind of casting machine speed hydraulic control system, and this system accurately can control the casting speed of casting machine, does not need artificially to intervene it, by closed-loop feedback, realizes automatic operation.
Understand the utility model better to make those skilled in the art and casting machine speed hydraulic control system is provided, below in conjunction with accompanying drawing and concrete mode of execution, technological scheme provided by the utility model is described in detail.
As shown in Figure 1, be the pipeline distribution map of a kind of concrete mode of execution of casting machine speed hydraulic control system provided by the utility model.As shown in the figure, in the present embodiment, comprise oil hydraulic cylinder 1, oil pump 2, motor 3, fuel tank 4, mainly also comprise the flowmeter 5 be connected with the oil outlet of oil hydraulic cylinder 1, cooperatively, also comprise the flow control device 6 arranged that to match with this flowmeter 5.Flow control device 6 can make feedback by flow meter 5, is adjusted by the flow of hydraulic pressure reading to the hydraulic oil flowing through flow control device 6 in induction flowmeter 5, can reach the object controlled in real time like this.When flow is larger, flow control device 6 reduces oil circuit, and flow is reduced; When flow is less, flow control device 6 can increase oil circuit again, and flow is increased gradually.
Particularly, the flowmeter 5 arranged in the present embodiment is screw rod flowmeter, screw rod flowmeter display effect is stable and durable, cost performance is higher, be a kind of mode of execution preferably, flow control device 6 is specially based on stepper motor Flow valve, and this Flow valve can by the size of the hydraulic fluid flow rate in PLC program control loop, after production setup parameter and aluminum alloy casting liquid level feed back to PLC, PLC controls flow.It should be noted that; the screw rod flowmeter adopted in present embodiment is a kind of preferred scheme with based on stepper motor Flow valve; also can make improvements; these improvement also drop within the claimed scope of the utility model, and such as flowmeter 5 adopts volumetric gear flow meter or the higher mass flowmenter of precision.
Further, also comprise stopper 11 in present embodiment, stopper 11 is installed on the loop between flow control device 6 and fuel tank 4, for the break-make of oil circuit control.Before operational outfit, need first to open this stopper.Particularly, stopper 11 is specially manually operated valve in the present embodiment, and if there is fortuitous event, such as electric control device lost efficacy, and can utilize this device emergent stopping, prevent the appearance of fortuitous event.
Further, above-mentioned casting machine speed hydraulic control system also includes selector valve 7, selector valve 7 is for conveying liquid force feed in oil hydraulic cylinder 1, oil hydraulic cylinder 1 is made to increase, before starting casting, need oil hydraulic cylinder 1 to move to the highest position, then by flowmeter 5 and the oil extraction of hydraulic control device 6 earth-return, make oil hydraulic cylinder 1 start to decline, cast.Selector valve 7 is exactly injection liquid force feed in the forward direction oil hydraulic cylinder 1 that casting really starts.Selector valve 7 also can control oil hydraulic cylinder 1 declines, and the path changing selector valve 7 inside makes the hydraulic oil in oil hydraulic cylinder 1 be discharged by selector valve 7, and then oil hydraulic cylinder 1 is declined.But because the mode that this hydraulic control cylinder 1 declines is inaccurate, cannot meet the condition required by casting, therefore not adopt, selector valve 7 just can realize simple oil-feed and fuel-displaced operation, cannot accurately control.Particularly, the selector valve 7 in present embodiment is solenoid directional control valve, need not control manually, enhance automation integrated result.
Present embodiment also comprises oil feeding device 8, this oil feeding device 8 is in parallel with selector valve 7, one end is connected to oil pump 2, the other end is connected to oil hydraulic cylinder 1, directly to fuel feeding in oil hydraulic cylinder 1, this oil feeding device 8 is identical with selector valve 7 role, also be injection liquid force feed in oil hydraulic cylinder 1, but difference is, two oil supplying devices are set and can fill hydraulic oil by oil hydraulic cylinder 1 fast, improve utilization efficiency, and the hydraulic fluid flow rate that this device passes through is larger, when needs fill fast, selector valve 7 and oil feeding device 8 are opened simultaneously, and when not needing king-sized flow, only need to open selector valve 7, be convenient to the flow of more accurately hydraulic control oil.Set-up mode adopted in the present embodiment can make corresponding improvement according to concrete service condition, these improvement are also encompassed in the claimed scope of the utility model.
Be connected a relief valve 9 at selector valve 7 with the oil outlet of oil pump 2, the other end of relief valve 9 is connected with fuel tank 4.Install relief valve 9 and avoid the excessive damage causing oil pump 2 of the pressure of system, when the hydraulic pressure of hydraulic system exceedes setting pressure, hydraulic oil is fed directly in fuel tank 4 by relief valve 9.
Present embodiment is whole system fuel feeding by Double-linkage, and namely a motor drives two oil pumps 2 to work simultaneously, and fuel delivery is larger, improves fuel feeding efficiency.
Further, be also provided with filter 12 on this system, be arranged on the loop between oil hydraulic cylinder 1 and flowmeter 5.By arranging filter 12, filtered fluid force feed, makes cleanliness of hydraulic oil, ensures in the precision by detecting during flowmeter 5.Another filter 12 is installed on the loop between relief valve 9 and fuel tank 4, before entering fuel tank 4, first to hydraulic oil filtering, ensures the clean of fuel tank internal.
Be arranged on the pressure gauge 10 between selector valve 7 and oil pump 2 on loop, convenient operation personnel understand the pressure condition of internal system, to operate accordingly in time.
When making casting machine speed hydraulic control system, first open selector valve 7 and oil feeding device 8, drive two oil pumps, 4 pairs of oil hydraulic cylinder 1 fuel feeding by motor 3, when oil hydraulic cylinder 1 rises to certain height, oil pump 4 stops, and closes selector valve 7 and oil feeding device 8.Make hydraulic oil successively by screw rod flowmeter and based on stepper motor Flow valve, the flow of accurate hydraulic control oil, makes the decline of oil hydraulic cylinder 1, starts casting, and until has cast.By screw rod flowmeter and the interaction based on stepper motor Flow valve, realize the rate of descent of automatic hydraulic control cylinder 1, need not artificially handle, improve the efficiency of operation.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein, when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a casting machine speed hydraulic control system, comprise oil hydraulic cylinder (1), oil pump (2), the motor (3) driving described oil pump (2) to work, the fuel tank (4) that is connected with the filler opening of described oil pump (2), it is characterized in that, also comprise:
The flowmeter (5) be connected with the oil outlet of described oil hydraulic cylinder (1);
Be communicated in the oil outlet of described flowmeter (5), can hydraulic control oil flow the flow control device (6) of feedback can be made described flowmeter (5).
2. casting machine speed hydraulic control system as claimed in claim 1, it is characterized in that, also comprise and being arranged between described flow control device (6) and described fuel tank (4), and for the stopper (11) of oil circuit control break-make.
3. casting machine speed hydraulic control system as claimed in claim 1, it is characterized in that, described flowmeter (5) is screw rod flowmeter, mass flowmenter or volumetric gear flow meter.
4. casting machine speed hydraulic control system as claimed in claim 3, it is characterized in that, described flow control device (6) is based on stepper motor Flow valve, describedly can to feed back described screw rod flowmeter based on stepper motor Flow valve, and by the size of the hydraulic fluid flow rate in PLC program control loop.
5. casting machine speed hydraulic control system as described in any one of Claims 1-4, is characterized in that, also comprises and to be connected with described oil pump (2) and can to control the selector valve (7) of described oil hydraulic cylinder (1) rise and fall.
6. casting machine speed hydraulic control system as claimed in claim 5, is characterized in that, also comprise in parallel with described selector valve (7), the oil feeding device (8) be connected with described oil pump (2) oil outlet; One end and described selector valve (7) are parallel to the oil outlet of described oil pump (2), the relief valve (9) that the other end is connected with described fuel tank (4).
7. casting machine speed hydraulic control system as claimed in claim 5, it is characterized in that, described selector valve (7) is solenoid directional control valve.
8. casting machine speed hydraulic control system as claimed in claim 5, is characterized in that, by described motor (3) drive two described oil pumps (2) for whole system provides power.
9. casting machine speed hydraulic control system as claimed in claim 6, it is characterized in that, also comprise the filter (12) be arranged at respectively between described oil hydraulic cylinder (1) and described flowmeter (5), between described relief valve (9) and described fuel tank (4).
10. the casting machine speed hydraulic control system as described in any one of claim 6 to 9, is characterized in that, also comprises the pressure gauge (10) be arranged between described selector valve (7) and described oil pump (2) on loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420765921.2U CN204386968U (en) | 2014-12-08 | 2014-12-08 | Casting machine speed hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420765921.2U CN204386968U (en) | 2014-12-08 | 2014-12-08 | Casting machine speed hydraulic control system |
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| Publication Number | Publication Date |
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| CN204386968U true CN204386968U (en) | 2015-06-10 |
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| CN201420765921.2U Active CN204386968U (en) | 2014-12-08 | 2014-12-08 | Casting machine speed hydraulic control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454706A (en) * | 2014-12-08 | 2015-03-25 | 西南铝业（集团）有限责任公司 | Hydraulic control system for semi-continuous casting speed |
-
2014
- 2014-12-08 CN CN201420765921.2U patent/CN204386968U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454706A (en) * | 2014-12-08 | 2015-03-25 | 西南铝业（集团）有限责任公司 | Hydraulic control system for semi-continuous casting speed |
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