CN202539515U - Lift control device for stepping cooling bed of continuous casting machine - Google Patents
Lift control device for stepping cooling bed of continuous casting machine Download PDFInfo
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- CN202539515U CN202539515U CN 201220058614 CN201220058614U CN202539515U CN 202539515 U CN202539515 U CN 202539515U CN 201220058614 CN201220058614 CN 201220058614 CN 201220058614 U CN201220058614 U CN 201220058614U CN 202539515 U CN202539515 U CN 202539515U
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Abstract
The utility model relates to a lift control device for a stepping cooling bed of a continuous casting machine, and belongs to the technical field of continuous casting machine equipment. The lift control device is used for reducing hydraulic shock and vibration generated by direction change, and comprises cartridge valves, pilot valves, a synchronous motor, a lifting hydraulic cylinder, an unloading valve, a pilot operated check valve and a tee reducing valve, wherein each cartridge valve consists of a direction cover plate, an adjustable screw, a spring and a spool, and the adjustable screw is arranged on the direction cover plate; the spring is sleeved on the adjustable screw, and the spool is positioned below the adjustable screw; and small damping holes are respectively arranged in control loops between the cartridge valves and the pilot valves. The upward movement amount of the main spools of the cartridge valves are limited by the screw structure on the direction cover plates of the cartridge valves to reduce the impact on the synchronous motor, so that the damage to the synchronous motor is reduced to the minimum extent, and thus the entire system is stable and reliable; and the energized commutation time of the pilot valves is appropriately prolonged by the damping structures to reduce hydraulic shock and vibration generated by commutation, so that oil leakage of hydraulic pipelines is obviously reduced.
Description
Technical field
The utility model relates to a kind of steel plant continuous casting machine step cooling bed up-down hydraulic control device, belongs to the conticaster equipment technical field.
Background technology
Conticaster step cooling bed apparatus for controlling of lifting is the visual plant that the steel plant continuous casting machine is produced, and what it directly influenced conticaster draws steel production.The cold bed of initial conticaster goes up and down to lean on motor connection reductor to drive; Adopted two lifting hydraulic cylinders to drive cold bed afterwards; This structure is electro hydraulic valve or the proportional valve control that relies on big latus rectum; Two hoist cylinders, are realized through this lifting shaft on lifting shaft through oil pipe parallel connection acting in conjunction synchronously.The shortcoming of this cold bed is to use many wheels and oblique rail; Daily maintenance is bigger, and because the active force that two hoist cylinders act on the axle is different, often snap the lifting shaft connection place; Use though present this cold bed also has, major part is substituted by new-type cold bed.New-type cold bed adopts four lifting hydraulic cylinders to act on cold bed on crossbeam, makes cold bed accomplish lifting action, and four cylinders are realized by syncmotor synchronously.Because the oil cylinder quantity of moving simultaneously is many and cylinder diameter is big; So control section adopts the switch valve of 6 latus rectums to make pilot valve and makes main valve with the inserted valve that adopts big latus rectum, but finds that in actual production process also there is certain shortcoming in this control mode; Mainly be when opening under the control of inserted valve at pilot valve; Spool is carried on unreserved under the effect of hydraulic coupling, and hydraulic fluid port is all opened, and certainly will cause serious hydraulic shock near oil pipe the integrated package and syncmotor like this.Problems such as reversing impact is big, the tubing vibration of integrated package back is big, motor is uttered long and high-pitched sounds and frequent leakage of oil, regular maintenance amount be big have been brought very big influence to production, the necessary improvement.
The utility model content
The utility model technical problem to be solved provide a kind of hydraulic shock of producing of can reducing to commutate with vibration, reduce leakage of oil, the impaired conticaster step cooling bed apparatus for controlling of lifting of reduction motor.
The technical scheme that solves the problems of the technologies described above is:
A kind of conticaster step cooling bed apparatus for controlling of lifting; It is made up of rising inserted valve, rising pilot valve, syncmotor, lifting hydraulic cylinder, decline pilot valve, decline inserted valve, unloader, hydraulic control one-way valve, three-way pressure reducing valve; Its improvements are, described rising inserted valve and decline inserted valve are made up of direction cover plate, scalable screw rod, spring, spool, and the scalable screw rod is installed on the direction cover plate; Spring housing is contained on the scalable screw rod, and spool is positioned at the below of scalable screw rod.
Above-mentioned conticaster step cooling bed apparatus for controlling of lifting; Two damping holes that diameter differs installing respectively on the control loop between said rising inserted valve and rising pilot valve, decline pilot valve and the decline inserted valve, the diameter of damping hole is 0.6mm-1.5mm.
The usefulness of the utility model is:
Screw-rod structure on the inserted valve direction cover plate makes that the amount of moving is restricted on the inserted valve main valve plug, and opening degree suitably reduces like this, has also just reduced the impact to syncmotor, and the damage that syncmotor is received drops to minimum, makes whole system reliable and stable; Owing in the control loop between inserted valve and pilot valve damping structure is installed, pilot valve suitably extended in the time that gets electric switching-over, had reduced hydraulic shock and vibration that switching-over produces, and the leakage of oil of fluid pressure line obviously reduces.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the rising inserted valve of the utility model or the structural representation of decline inserted valve;
Fig. 3 is the damping hole structural representation of the utility model.
Mark is following among the figure: rising inserted valve 1, rising pilot valve 2, syncmotor 3, lifting hydraulic cylinder 4, decline pilot valve 5, decline inserted valve 6, unloader 7, hydraulic control one-way valve 8, three-way pressure reducing valve 9, pilot reversing valve 10,0.8mm damping hole 11, scalable screw rod 12, spool 13, spring 14,1.2mm damping hole 15, direction cover plate 16, direction cover plate valve body, the screw 18 that has damping hole, damping hole 19, oil circuit hole 20.
The specific embodiment
The utility model realizes that through syncmotor synchronous hydraulic control system is identical by four hydraulic cylinders with of the prior art; Also be to adopt the switch valve of 6 latus rectums to make pilot valve and adopt the inserted valve of big latus rectum to make main valve, but used big latus rectum inserted valve improve to some extent.
Show among the figure, comprise rising inserted valve 1, rising pilot valve 2, syncmotor 3, lifting hydraulic cylinder 4, decline pilot valve 5, decline inserted valve 6, unloader 7, hydraulic control one-way valve 8, three-way pressure reducing valve 9 in the utility model.Improved rising inserted valve 1 is made up of direction cover plate 16, scalable screw rod 12, spring 14, spool 13 with decline inserted valve 6; Scalable screw rod 12 is installed on the direction cover plate 16; Spring 14 is sleeved on the scalable screw rod 12, and spool 13 is positioned at the below of scalable screw rod 12.
After adopting this structure; When opening under the control of inserted valve at pilot valve; Be installed in scalable screw rod 12 on the direction cover plate 16 and be used for the maximum that regulating spool 13 puies forward under the effect of hydraulic coupling, thereby the maximum open of inserted valve is under control, reduced on the one hand because the hydraulic shock and the vibration of the too big generation that the valve port of inserted valve is opened; Through regulating the inserted valve valve port, avoided the resonance of inserted valve, pipeline and syncmotor on the other hand.
Show among the figure; Another improvements of the utility model are; The damping hole 19 that two diameter of on control loop between rising inserted valve 1 and rising pilot valve 2, decline pilot valve 5 and the decline inserted valve 6, installing respectively differ, the diameter of damping hole 19 is 0.6mm-1.5mm.Owing in the control loop between inserted valve and pilot valve damping structure is installed, pilot valve suitably extended in the time that gets electric switching-over, had reduced hydraulic shock and vibration that switching-over produces, and the leakage of oil of fluid pressure line obviously reduces.
In practical operation, it is too big or too little that the diameter of these two damping holes can not select, if the choosing too greatly do not have what effect; If the diameter choosing is too little; Then make inserted valve become commutating period oversize, directly influence the speed of service of cold bed, what also just influence conticaster draws steel production.Prove through measuring and calculating and actual tests; One is selected diameter is that to select diameter be that 1.2mm damping hole 15 is relatively good for 0.8mm damping hole 11 and one; Pilot valve control inserted valve is opened after slow earlier soon like this; And then slowly close inserted valve, both reduced the opening and closing time of inserted valve, reduced hydraulic shock again.
Show among the figure, on the oil circuit hole 20 of direction cover plate 12, process screw thread, just can install the screw that damping hole 19 is housed 18.
The course of work of the utility model is following:
Referring to Fig. 1,1DT gets electric, 2DT dead electricity, 2 switching-overs of rising pilot valve; The pressure oil that is added on rising inserted valve 1 main valve plug is closed extremely, and simultaneously original pressure oil flows back to fuel tank through the L1 pipe, and the pressure above the main valve plug reduces; Move on the main valve plug, pressure oil then upwards gets into lifting hydraulic cylinder 4 cavity of resorptions through syncmotor 3 through rising inserted valve 2, and upper cavity pressure oil is then through hydraulic control one-way valve 8 and three-way pressure reducing valve 9; Flow back to fuel tank through the T1 pipe, the oil cylinder piston bar rises like this, accomplishes vertical motion.
Referring to Fig. 1,2DT gets electric, the 1DT dead electricity, and rising inserted valve 1 is closed; 2DT get electric after, decline pilot valve 5 switching-over reduces the pressure on decline inserted valve 6 main valve plugs; Decline inserted valve 6 main valve plugs are opened, and existing unloader 7 is simultaneously also opened by pressure oil, flows back to fuel tank through T1; 2DT also opens hydraulic control one-way valve 8 after getting 5 switching-overs of electric pilot valve simultaneously, gets into the epicoele of cold bed lifting hydraulic cylinder by the 1MPa pressure oil of three-way pressure reducing valve 9 outputs, accomplishes the down maneuver of four hydraulic cylinders.
Owing in the control loop between inserted valve and pilot valve damping structure is installed, pilot valve suitably extended in the time that gets electric switching-over, had reduced hydraulic shock and vibration that switching-over produces; The leakage of oil of fluid pressure line obviously reduces; Scalable screw rod 12 structures on the inserted valve direction cover plate 12 make that the amount of moving is restricted on the inserted valve spool 13, and opening degree suitably reduces like this; Also just having reduced impact to syncmotor. the damage that syncmotor is received drops to minimum, makes whole system reliable and stable.
Claims (2)
1. casting machine step cooling bed apparatus for controlling of lifting; It is made up of rising inserted valve (1), rising pilot valve (2), syncmotor (3), lifting hydraulic cylinder (4), decline pilot valve (5), decline inserted valve (6), unloader (7), hydraulic control one-way valve (8), three-way pressure reducing valve (9); It is characterized in that: described rising inserted valve (1) and decline inserted valve (6) are made up of direction cover plate (16), scalable screw rod (12), spring (14), spool (13); Scalable screw rod (12) is installed on the direction cover plate (16); Spring (14) is sleeved on the scalable screw rod (12), and spool (13) is positioned at the below of scalable screw rod (12).
2. casting machine step cooling bed apparatus for controlling of lifting according to claim 1; It is characterized in that: the damping hole (19) that two diameter of installing respectively on the control loop between said rising inserted valve (1) and rising pilot valve (2), decline pilot valve (5) and the decline inserted valve (6) differ, the diameter of damping hole (19) is 0.6mm-1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220058614 CN202539515U (en) | 2012-02-22 | 2012-02-22 | Lift control device for stepping cooling bed of continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220058614 CN202539515U (en) | 2012-02-22 | 2012-02-22 | Lift control device for stepping cooling bed of continuous casting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202539515U true CN202539515U (en) | 2012-11-21 |
Family
ID=47160205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220058614 Expired - Fee Related CN202539515U (en) | 2012-02-22 | 2012-02-22 | Lift control device for stepping cooling bed of continuous casting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202539515U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464542A (en) * | 2013-08-30 | 2013-12-25 | 辽宁华原重型装备有限公司 | Plate forming machine and processing method thereof |
| CN107630852A (en) * | 2017-08-31 | 2018-01-26 | 宣化钢铁集团有限责任公司 | A kind of method that straightening hydraulic control is realized using plug-in logical valve |
-
2012
- 2012-02-22 CN CN 201220058614 patent/CN202539515U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464542A (en) * | 2013-08-30 | 2013-12-25 | 辽宁华原重型装备有限公司 | Plate forming machine and processing method thereof |
| CN107630852A (en) * | 2017-08-31 | 2018-01-26 | 宣化钢铁集团有限责任公司 | A kind of method that straightening hydraulic control is realized using plug-in logical valve |
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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: 20121121 Termination date: 20140222 |