CN204284040U - High reliability back-up roll lifting apparatus - Google Patents
High reliability back-up roll lifting apparatus Download PDFInfo
- Publication number
- CN204284040U CN204284040U CN201420633556.XU CN201420633556U CN204284040U CN 204284040 U CN204284040 U CN 204284040U CN 201420633556 U CN201420633556 U CN 201420633556U CN 204284040 U CN204284040 U CN 204284040U
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- China
- Prior art keywords
- branch road
- rodless cavity
- rod chamber
- interior
- valve
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Abstract
The utility model discloses a kind of high reliability back-up roll lifting apparatus, comprise fuel tank, safety valve, selector valve, hydraulic lock, series flow control valve and oil cylinder, each oil cylinder includes a rod chamber and a rodless cavity, and the rod chamber of four outer oil cylinders is connected by outer rod chamber branch road, the rodless cavity of four outer oil cylinders is connected by outer rodless cavity branch road, outer rod chamber branch road and outer rodless cavity branch road composition outer loop, the rod chamber of four interior side cylinders is connected by interior rod chamber branch road, the rodless cavity of four outer side cylinders is connected by interior rodless cavity branch road, interior rod chamber branch road and interior rodless cavity branch road composition inner loop, outer rod chamber branch road, interior rod chamber branch road, interior rodless cavity branch road, outer rodless cavity branch road is respectively arranged with the first ball valve, second ball valve, 3rd ball valve and the 4th ball valve, outer loop is connected with selector valve by hydraulic lock with inner loop.The utility model have when breaking down can work on, structure is simple, the beneficial effect of failure rate is low.
Description
Technical field
The utility model relates to steel manufacture field, specifically a kind of high reliability back-up roll lifting apparatus.
Background technique
Hot-strip generally adopts four high stand, along with the wearing and tearing of roller system, needs in time adjustment roll gap absolute altitude, currently generally is adjusted by going up or down stairway pad, and before the adjustment of downstairs pad needs lower backing roll to lift, and main employing hydraulic jack realizes lifting function at present.But existing back-up roll lifting apparatus more problems.Due to oil cylinder more (generally having 4 groups of 8 oil cylinders), pipeline is longer, and flexible pipe is easy to wear by drag chain, and simultaneously for improving synchronous effect, design of Hydraulic System is comparatively complicated, causes equipment failure higher; Simultaneously because oil cylinder is arranged in bottom roller system, tie point is many, and fault treatment often needs to extract lower backing roll out, and the time lengthens, and complicated operation, it is very inconvenient to process.Simultaneously due to the necessary co-operation of eight oil cylinders, therefore once break down, whole system cannot operate, and affect manufacturing efficiency.
Model utility content
The purpose of this utility model is the deficiency existed to solve above-mentioned background technology, proposes one and can work on when indivedual oil cylinder breaks down, and structure is simple, the high reliability back-up roll lifting apparatus of failure rate is low.
In order to realize above object, a kind of high reliability back-up roll lifting apparatus that the utility model provides, comprise fuel tank, safety valve, selector valve, hydraulic lock, series flow control valve and oil cylinder, described oil cylinder has eight, one group between two, be divided into into four groups, described four group oil cylinders are arranged on below back-up roll four angles respectively, each oil cylinder includes a rod chamber and a rodless cavity, it is characterized in that: the rod chamber of described four outer oil cylinders is connected by outer rod chamber branch road, the rodless cavity of described four outer oil cylinders is connected by outer rodless cavity branch road, described outer rod chamber branch road and outer rodless cavity branch road composition outer loop, the rod chamber of described four inner oil cylinders is connected by interior rod chamber branch road, the rodless cavity of described four inner oil cylinders is connected by interior rodless cavity branch road, described interior rod chamber branch road and interior rodless cavity branch road composition inner loop, described outer rod chamber branch road is provided with the first ball valve, interior rod chamber branch road is provided with the second ball valve, described interior rodless cavity branch road is provided with the 3rd ball valve, outer rodless cavity branch road is provided with the 4th ball valve, described interior rodless cavity branch road is connected with series flow control valve jointly with outer rodless cavity branch road, outer loop is connected with selector valve by hydraulic lock with inner loop, described selector valve is connected with hydraulic oil source.
Preferably, described outer loop and inner loop are provided with pressure switch and safety valve, and described safety valve is connected with fuel tank.Pressure switch is used for rodless cavity Pressure testing, participates in Systematical control.The effect of safety valve is, when high-pressure situations occurs suddenly the hydraulic oil in outer loop or inner loop, to be expelled in fuel tank by safety valve by unnecessary hydraulic oil, the safety of protection outer loop and inner loop.
This high reliability back-up roll lifting apparatus is by being divided into inner loop and outer loop two groups by eight oil cylinders, in normal operation, two groups of totally eight oil cylinder co-operation, when wherein a certain group oil cylinder breaks down, can temporary close loop belonging to it, and four oil cylinders in another group loop also can work on, loss fault caused is down to minimum.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present utility model;
Fig. 2 is existing back-up roll lifting apparatus;
In figure: fuel tank 1, safety valve 2, selector valve 3, hydraulic lock 4, series flow control valve 5, pressure switch 6, first ball valve 7, second ball valve 8, the 3rd ball valve 9, the 4th ball valve 10, oil cylinder 11, outer rod chamber branch road 12, interior rod chamber branch road 13, interior rodless cavity branch road 14, outer rodless cavity branch road 15.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
A kind of high reliability back-up roll lifting apparatus as shown in Figure 1, comprise fuel tank 1, safety valve 2, selector valve 3, hydraulic lock 4, series flow control valve 5 and oil cylinder 11, described oil cylinder 11 has eight, one group between two, be divided into into four groups, described four group oil cylinders 11 are arranged on below back-up roll four angles respectively, and each oil cylinder 11 includes a rod chamber and a rodless cavity, and the rod chamber of described four outer oil cylinders 11 is connected by outer rod chamber branch road 12, the rodless cavity of described four outer oil cylinders 11 is connected by outer rodless cavity branch road 15, described outer rod chamber branch road 12 and outer rodless cavity branch road 15 form outer loop, the rod chamber of described four inner oil cylinders 11 is connected by interior rod chamber branch road 13, the rodless cavity of described four inner oil cylinders 11 is connected by interior rodless cavity branch road 14, described interior rod chamber branch road 13 and interior rodless cavity branch road 14 form inner loop, described outer rod chamber branch road 12 is provided with the first ball valve 7, interior rod chamber branch road 13 is provided with the second ball valve 8, described interior rodless cavity branch road 14 is provided with the 3rd ball valve 9, outer rodless cavity branch road 15 is provided with the 4th ball valve 10, described interior rodless cavity branch road 14 is connected with series flow control valve 5 jointly with outer rodless cavity branch road 15, outer loop is connected with selector valve 3 by hydraulic lock 4 with inner loop, described selector valve 3 is connected with hydraulic oil source.Described outer loop and inner loop are provided with pressure switch 6 and safety valve 2, and described safety valve 2 is connected with fuel tank 1.
The working principle of this high reliability back-up roll lifting apparatus is:
Under normal working, when opening the first ball valve 7, second ball valve 8, the 3rd ball valve 9, the 4th ball valve 10, if a position of selector valve 3 obtains electric, then selector valve 3 is in oil condition, and eight oil cylinders 11 all decline, and back-up roll declines; If the b position of selector valve 3 obtains electric, then selector valve 3 is in oil-feed state, and eight oil cylinders 11 all rise, back-up roll lifting.
When inner loop breaks down, close the second ball valve 8 and the 3rd ball valve 9, namely inner loop disconnects, and four oil cylinders 11 of inner side do not participate in work.If a position of selector valve 3 obtains electric, four oil cylinders 11 of outer loop decline, and back-up roll declines; If the b position of selector valve 3 obtains electric, four oil cylinders 11 of outer loop rise, back-up roll lifting.
When outer loop breaks down, close the first ball valve 7 and the 4th ball valve 10, namely outer loop disconnects, and four oil cylinders 11 in outside do not participate in work.If a position of selector valve 3 obtains electric, four oil cylinders 11 of inner loop decline, and back-up roll declines; If the b position of selector valve 3 obtains electric, inner loop oil cylinder 11 rises, back-up roll lifting.
Existing back-up roll lifting apparatus as shown in Figure 2, the rodless cavity of all eight oil cylinders is by two series flow control valve 5 connection controls, each series flow control valve 5 controls four oil cylinders, the action of each selector valve 3, eight oil cylinders work all simultaneously, when wherein certain oil cylinder, pipeline or series flow control valve break down, whole device all cannot work.
Compared to existing back-up roll lifting apparatus, the Advantages found of this high reliability back-up roll lifting apparatus exists:
1) also can normal lifting back-up roll during fault.When in four oil cylinders of outer loop and four oil cylinders of inner loop, a certain group oil cylinder or corresponding pipeline break down, can temporary close loop belonging to it, and four oil cylinders in another group loop also can work on, loss fault caused is down to minimum.
2) structure is simpler, failure rate is low.Existing back-up roll lifting apparatus needs two series flow control valves and two safety valves, and this high reliability back-up roll lifting apparatus then only needs a series flow control valve and a safety valve.Therefore, structure is more simple, failure rate is low.
The above is only preferred embodiment of the present utility model, not does any pro forma restriction to the utility model structure.Every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all still belong in the scope of the technical solution of the utility model.
Claims (2)
1. a high reliability back-up roll lifting apparatus, comprise fuel tank (1), safety valve (2), selector valve (3), hydraulic lock (4), series flow control valve (5) and oil cylinder (11), described oil cylinder (11) has eight, one group between two, be divided into into four groups, described four group oil cylinders (11) are arranged on below back-up roll four angles respectively, each oil cylinder (11) includes a rod chamber and a rodless cavity, it is characterized in that: the rod chamber of described four outer oil cylinders (11) is connected by outer rod chamber branch road (12), the rodless cavity of described four outer oil cylinders (11) is connected by outer rodless cavity branch road (15), described outer rod chamber branch road (12) and outer rodless cavity branch road (15) composition outer loop, the rod chamber of described four inner oil cylinders (11) is connected by interior rod chamber branch road (13), the rodless cavity of described four inner oil cylinders (11) is connected by interior rodless cavity branch road (14), described interior rod chamber branch road (13) and interior rodless cavity branch road (14) composition inner loop, described outer rod chamber branch road (12) is provided with the first ball valve (7), interior rod chamber branch road (13) is provided with the second ball valve (8), described interior rodless cavity branch road (14) is provided with the 3rd ball valve (9), outer rodless cavity branch road (15) is provided with the 4th ball valve (10), described interior rodless cavity branch road (14) is connected with series flow control valve (5) jointly with outer rodless cavity branch road (15), outer loop is connected with selector valve (3) by hydraulic lock (4) with inner loop, described selector valve (3) is connected with hydraulic oil source.
2. high reliability back-up roll lifting apparatus according to claim 1, it is characterized in that: described outer loop and inner loop are provided with pressure switch (6) and safety valve (2), and described safety valve (2) is connected with fuel tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420633556.XU CN204284040U (en) | 2014-10-29 | 2014-10-29 | High reliability back-up roll lifting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420633556.XU CN204284040U (en) | 2014-10-29 | 2014-10-29 | High reliability back-up roll lifting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204284040U true CN204284040U (en) | 2015-04-22 |
Family
ID=52867205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420633556.XU Expired - Fee Related CN204284040U (en) | 2014-10-29 | 2014-10-29 | High reliability back-up roll lifting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204284040U (en) |
-
2014
- 2014-10-29 CN CN201420633556.XU patent/CN204284040U/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 | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171030 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 15, Wuhan, Hubei, Wuchang Friendship Road, No. 999, block A, floor (Wuhan Iron and steel science and technology innovation department) () Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20201029 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |