CN203717492U - Upright roller shaft balance hydraulic control system of 2250mm rolling mill - Google Patents
Upright roller shaft balance hydraulic control system of 2250mm rolling mill Download PDFInfo
- Publication number
- CN203717492U CN203717492U CN201420058626.3U CN201420058626U CN203717492U CN 203717492 U CN203717492 U CN 203717492U CN 201420058626 U CN201420058626 U CN 201420058626U CN 203717492 U CN203717492 U CN 203717492U
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- CN
- China
- Prior art keywords
- valve
- check valve
- hydraulic control
- reducing valve
- pilot operated
- Prior art date
- 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
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 2
- 238000003801 milling Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- Fluid-Pressure Circuits (AREA)
Abstract
An upright roller shaft balance hydraulic control system of a 2250mm rolling mill belongs to the steel rolling auxiliary facility. One end of a first hydraulic cylinder is connected with a first tee reducing valve by a first hydraulic control check valve; a first pressure relay is arranged on the connection pipeline between the first hydraulic control check valve and the first tee reducing valve; the other end of the first hydraulic cylinder is connected with a second tee reducing valve by a second hydraulic control check valve; a second pressure relay is arranged on the connection pipeline between the second hydraulic control check valve and the second tee reducing valve; the other end of a second hydraulic cylinder is connected with a third tee reducing valve by a second hydraulic control check valve; a third pressure relay is arranged on the connection pipeline between the third hydraulic control check valve and the third tee reducing valve. The three tee reducing valves are connected in parallel and are connected with a fourth hydraulic control check valve; the fourth hydraulic control valve is connected with the P end of an electromagnetic reversing valve. The upright roller shaft balance hydraulic control system of the 2250 rolling mill can avoid the halt phenomenon of the rolling mill due to the fault of the tee reducing valves.
Description
Technical field
The utility model belongs to steel rolling supporting facility, is specifically related to a kind of 2250mm rolling mill vertical roll shaft balanced hydraulic control system.
Background technique
What Taiyuan Iron and Steel Co. hot continuous rolling 2250mm production line adopted is fully hydraulic servo rolling system, and wherein roughing vertical roll spindle balance has adopted three-way pressure reducing valve control loop, and in this loop, three-way pressure reducing valve plays the effect of decompression and overflow, thereby realizes the transient equiliblium of vertical roll shaft.But in use; due to the characteristic of oil contamination and three-way pressure reducing valve itself, (main valve heart action frequently causes spool, valve opening serious wear to cause main valve stuck; cause the pressure low); cause the frequent fault of three-way pressure reducing valve; cause the low warning of this circuit pressure frequent; cause milling train machine halt trouble, on rolling line equipment, stable operation has caused very large impact.
Summary of the invention
To shut down in order reducing because three-way pressure reducing valve fault causes unnecessary milling train, to reduce rolling line dead time, the utility model provides a kind of 2250mm rolling mill vertical roll shaft balanced hydraulic control system.
The utility model is arranged on 2250mm vertical roll of rolling axis balancing unit, it comprises two oil hydraulic cylinders, one end of first oil hydraulic cylinder connects the first three-way pressure reducing valve by the first Pilot operated check valve, on the connecting pipeline between the first Pilot operated check valve and the first three-way pressure reducing valve, the first pressure relay is set; The other end of first oil hydraulic cylinder connects the second three-way pressure reducing valve by the second Pilot operated check valve, on the connecting pipeline between the second Pilot operated check valve and the second three-way pressure reducing valve, the second pressure relay is set;
Wherein one end pipeline that one end of second oil hydraulic cylinder connects first oil hydraulic cylinder connects;
The other end of second oil hydraulic cylinder connects the 3rd three-way pressure reducing valve by the 3rd Pilot operated check valve, on the connecting pipeline between the 3rd Pilot operated check valve and the 3rd three-way pressure reducing valve, the 3rd pressure relay is set;
After three three-way pressure reducing valve parallel connections, connect the 4th Pilot operated check valve; The 4th Pilot operated check valve connects the P end of solenoid directional control valve.
The utility model can make vertical roll shaft balanced loop after three-way pressure reducing valve fault, can not cause milling train machine failure to shut down phenomenon, has greatly reduced the rate of fault of equipment.
Brief description of the drawings
Fig. 1 is the utility model embodiment's control principle drawing.
In figure, 1, pressure relay, 2, three-way pressure reducing valve, 3, solenoid directional control valve, 4, Pilot operated check valve, 5-1, first oil hydraulic cylinder, 5-2, second oil hydraulic cylinder.
Embodiment
Embodiment: shown in Fig. 1, the present embodiment comprises two oil hydraulic cylinders, one end of first oil hydraulic cylinder 5-1 connects the first three-way pressure reducing valve by the first Pilot operated check valve, on the connecting pipeline between the first Pilot operated check valve and the first three-way pressure reducing valve, the first pressure relay is set; The other end of first oil hydraulic cylinder connects the second three-way pressure reducing valve by the second Pilot operated check valve, on the connecting pipeline between the second Pilot operated check valve and the second three-way pressure reducing valve, the second pressure relay is set; One end of second oil hydraulic cylinder 5-2 connects wherein one end pipeline of first oil hydraulic cylinder 5-1; The other end of second oil hydraulic cylinder connects the 3rd three-way pressure reducing valve by the 3rd Pilot operated check valve, on the connecting pipeline between the 3rd Pilot operated check valve and the 3rd three-way pressure reducing valve, the 3rd pressure relay is set; After three three-way pressure reducing valve parallel connections, connect the 4th Pilot operated check valve; The 4th Pilot operated check valve connects the P end of solenoid directional control valve.
In the present embodiment, Pilot operated check valve adopts SL30PA1-4X type;
Three-way pressure reducing valve adopts 3DR16P5-200YM type;
Solenoid directional control valve adopts 4WE6Y-6X/EG24N9K4 type;
Pressure relay adopts KHM-40 type.
Claims (1)
1. a 2250mm rolling mill vertical roll shaft balanced hydraulic control system, be arranged on 2250mm vertical roll of rolling axis balancing unit, it comprises two oil hydraulic cylinders, the one end that it is characterized in that first oil hydraulic cylinder connects the first three-way pressure reducing valve by the first Pilot operated check valve, on the connecting pipeline between the first Pilot operated check valve and the first three-way pressure reducing valve, the first pressure relay is set; The other end of first oil hydraulic cylinder connects the second three-way pressure reducing valve by the second Pilot operated check valve, on the connecting pipeline between the second Pilot operated check valve and the second three-way pressure reducing valve, the second pressure relay is set; Wherein one end pipeline that one end of second oil hydraulic cylinder connects first oil hydraulic cylinder connects; The other end of second oil hydraulic cylinder connects the 3rd three-way pressure reducing valve by the 3rd Pilot operated check valve, on the connecting pipeline between the 3rd Pilot operated check valve and the 3rd three-way pressure reducing valve, the 3rd pressure relay is set; After three three-way pressure reducing valve parallel connections, connect the 4th Pilot operated check valve; The 4th Pilot operated check valve connects the P end of solenoid directional control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420058626.3U CN203717492U (en) | 2014-02-07 | 2014-02-07 | Upright roller shaft balance hydraulic control system of 2250mm rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420058626.3U CN203717492U (en) | 2014-02-07 | 2014-02-07 | Upright roller shaft balance hydraulic control system of 2250mm rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203717492U true CN203717492U (en) | 2014-07-16 |
Family
ID=51156651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420058626.3U Expired - Fee Related CN203717492U (en) | 2014-02-07 | 2014-02-07 | Upright roller shaft balance hydraulic control system of 2250mm rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203717492U (en) |
-
2014
- 2014-02-07 CN CN201420058626.3U patent/CN203717492U/en not_active Expired - Fee Related
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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: 20140716 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |