Patent US3757848A successfully refreshed from Google Patents.
US3757848A
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Method and apparatus to relieve the strain on roller apron segments during continuous casting
Assignee: Schloemann AG
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Filing: 1971-12-16
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Granted: 1973-09-11
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Expires: 1991-12-16
Abstract
Abstract In a continuous casting machine in which the casting emerging from the mold is conducted through a secondary cooling zone by a guide apron having spaced apron segment parts between which the casting moves, means are provided for relieving overload stresses which may be applied to said spaced apron segment parts by said casting in the event of interruption of the casting process. Hydraulic pressure is applied to said spaced apron segment parts to hold them in spaced relation, and means are provided to maintain the spaced relation even in the event of failure of the hydraulic pressure.
Inventors
- 👤 H Scholz
- 👤 G Bollig
- 👤 H Grothe
- 👤 G Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:00
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/12; B22D11/128; B22D11/14; B22D11/148
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
165 words
In a continuous casting apparatus having an apron which guides the casting through a secondary cooling zone, said apron comprising a plurality of segments, each having opposed members engaging opposed surfaces of the casting, with at least one of said members movable with respect to the other member to accommodate castings of different thickness, means for relieving excessive forces on said opposed members in the event of interruption of the casting operation, comprising a stop to limit the movement of said movable member, an overload relief element located adjacent said stop, means to apply pressure to said movable member to move it toward and hold it against said stop and to simultaneously move said overload relief element to lock said movable member in adjusted position, and means actuated by said movable member upon release of saId pressure and upon application by said casting of excessive forces thereto to move said overload relief element to release said movable member to permit further movement toward said stop.
Claim 2
Dependent Claim
165 words
In a continuous casting apparatus having an apron which guides the casting through a secondary cooling zone, said apron comprising a plurality of segments, each having opposed members engaging opposed surfaces of the casting, with at least one of said members movable with respect to the other member to accommodate castings of different thickness, means for relieving excessive forces on said opposed members in the event of interruption of the casting operation, comprising a stop to limit the movement of said movable member, an overload relief element located adjacent said stop, means to apply pressure to said movable member to move it toward and hold it against said stop and to simultaneously move said overload relief element to lock said movable member in adjusted position, and means actuated by said movable member upon release of saId pressure and upon application by said casting of excessive forces thereto to move said overload relief element to release said movable member to permit further movement toward said stop.
Claim 3
Dependent Claim
37 words
Apparatus as claimed in claim 1 in which a column is mounted in fixed position on one of said opposed members and in which the other of said opposed members is in sliding engagement with said column.
Claim 4
Dependent Claim
46 words
Apparatus as claimed in claim 1 in which said means to apply pressure to said movable member includes a first wedge surface, and in which said overload relief element includes a second wedge surface located to be engaged by said first wedge surface in sliding relationship.
Claim 5
Dependent Claim
39 words
Apparatus as claimed in claim 3 in which said stop includes a third wedge surface, and in which said overload relief element includes a fourth wedge surface located to be engaged by said third wedge surface in sliding relationship.
Claim 6
Dependent Claim
27 words
Apparatus as claimed in claim 4 in which the angle of inclination of the cooperating inclined surfaces of the wedges exceeds the existing limiting angle of friction.
Claim 7
Dependent Claim
14 words
Apparatus as claimed in claim 4 in which said third wedge surface is adjustable.
Claim 8
Dependent Claim
21 words
Apparatus as claimed in claim 2 in which said overload relief element and said stop are forked and straddle said column.
Claim 9
Dependent Claim
49 words
Apparatus as claimed in claim 2 in which said stop includes a first ring rotatably mounted on said column and having steps therein, and a second ring rotatably mounted on said column and having projections thereon to selectively engage said steps to adjust the effective position of said stop.
Claim 10
Dependent Claim
35 words
Apparatus as claimed in claim 1 in which said means to apply pressure to said movable member includes a cranked lever, and a link connecting one arm of said lever to said overload relief element.
Claim 11
Dependent Claim
39 words
Apparatus as claimed in claim 8 in which said stepped ring is provided with a lever arm which cooperates with locking devices for adjusting the ring to predetermined spacings between the opposing members of the segments of the apron.
Claim 12
Dependent Claim
25 words
Apparatus as claimed in claim 10 in which the lever arms of all the segments of the apron are interconnected for common operation and adjustment.
Claim 13
Dependent Claim
135 words
In a continuous casting apparatus having an apron which guides the casting through a secondary cooling zone, said apron comprising a plurality of segments, each having opposed members engaging opposed surface of the casting, with at least one of said members movable with respect to the other member to accommodate castings of different thickness, the method of relieving excessive forces on said opposed members in the event of interruption of the casting operation which comprises, applying pressure to said movable member in one direction to move and hold it against a stop, applying pressure to said movable member in another direction to lock it against said stop, and releasing both pressures simultaneously to unlock said movable member and to permit it to move toward said stop when said opposed members are subjected to excessive forces.
Claim 14
Dependent Claim
135 words
In a continuous casting apparatus having an apron which guides the casting through a secondary cooling zone, said apron comprising a plurality of segments, each having opposed members engaging opposed surface of the casting, with at least one of said members movable with respect to the other member to accommodate castings of different thickness, the method of relieving excessive forces on said opposed members in the event of interruption of the casting operation which comprises, applying pressure to said movable member in one direction to move and hold it against a stop, applying pressure to said movable member in another direction to lock it against said stop, and releasing both pressures simultaneously to unlock said movable member and to permit it to move toward said stop when said opposed members are subjected to excessive forces.
Claim 15
Dependent Claim
40 words
A method according to claim 12 in which the pressure applied to said movable member to move and hold it against a stop is applied in the same direction as the forces applied by the ferrostatic pressure of the casting.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |