RU2165333C2 - Car for intermediate ladles of metal continuous casting machine - Google Patents

Abstract

FIELD: metallurgy. SUBSTANCE: car has undercarriage with supporting frame positioned on guides, crosspiece for ladles hinge-connected to leverage of its lifting and rollers secured on crosspiece and resting on profiled surface. Car is provided with carriages fixed horizontally with respect to crosspiece and suspended from supporting frame loosely. Each carriage consists of platform with profiled surface and rolls with vertical axis of rotation resting on guides. EFFECT: enhanced reliability of casting process. 3 dwg

Description

 The invention relates to metallurgy and can be used on a continuous metal casting machine.

 A device is known for transporting steel pouring and intermediate ladles on a casting site of a continuous metal casting machine according to USSR author's certificate N 822980 / publ. 04/23/81 g /, which is a two-stage frame, on the upper stage of which are placed guide trolleys with a running gear, and on the lower one - a stand for steel-pouring ladles and a crosshead for intermediate ladles, connected to the running gear by levers.

 A disadvantage of the known device is that it does not solve the problem of regulating the position of the intermediate bucket in the direction transverse to the guides. This leads to incorrect alignment of the casting cup of the intermediate ladle relative to the mold and, as a result, to defects of the crystallizing ingot.

 Closest to the proposed technical essence and achieved is a trolley for intermediate ladles of a continuous metal casting machine, described in the collection "Modern continuous steel casting machines" / TSNIITEITYAZHMASH, 1-79-32, p.9-12 /, containing a running gear with a support a frame mounted on guides, a traverse for ladles, pivotally connected to the lever mechanism for its lifting, and rollers fixed to the traverse, supported on a profiled surface of the support frame.

 The disadvantage of this trolley is the bending of the traverse with an intermediate bucket filled with metal, since the roller rests on the profiled surface of the support frame in the upper part of the traverse, and the lower part is deformed under the weight of the bucket. As a result, the lack of accuracy of the exhibition in the center of the mold of the bucket cups and the unreliability of the casting process.

 The aim of the invention is the accuracy of the exhibition of intermediate ladles relative to the axis of the mold and the reliability of the casting process.

 To achieve this goal, a trolley for intermediate buckets of a continuous metal casting machine, comprising a running gear with a support frame mounted on rails, a traverse for ladles pivotally connected to the lever mechanism for lifting it, and rollers supported on a profiled surface are equipped with carriages horizontally fixed relative to traverses and freely suspended from the support frame, and each of the carriages consists of a platform and rollers with a vertical axis of rotation, supported by guides, while the rollers are fixed enes on the traverse trolley or platforms, and the profiled surface is formed respectively on the platforms or on the carriages traverse.

 Thanks to these features, the trolley ensures the alignment of the intermediate ladles and molds of the continuous metal casting machine and, as a result, the quality of crystallized casting. In addition, in an emergency, when lifting the intermediate bucket, the rollers continue to rely on the profiled surface of the carriages and there are no sharp impacts of the bucket.

 Two embodiments of the invention are given below, not excluding other options within the scope of the claims, with reference to the drawings shown in FIG. thirteen.

In FIG. 1 shows a view in a plane perpendicular to the direction of movement of the trolley for tundishes of a continuous metal casting machine;
in FIG. 2 is a view A in FIG. 1;
in FIG. 3 - the second embodiment of the proposed trolley.

 The trolley for the intermediate ladles of the continuous metal casting machine comprises a running gear consisting of a support frame 1 mounted by its running wheels 2 on the guides 3 fixed on the horizontal part of the metal structure 4 of the continuous casting machine. Traverse 5, having in the plane perpendicular to the guides, ┘-shaped, pivotally connected with the lever mechanism 6 of its lifting. The horizontal parts of the ┘-shaped crosshead are used to install intermediate buckets 7. From the bottom, on the vertical part of the crosshead 5, rollers 8 are fixed, with which it rests on the surface of the carriage 9 profiled along a circle of radius P of radius 9. The radius value is equal to the length P along the hinges of the lifting arm 6. The carriage is suspended to the supporting frame 1 by means of double-hinged levers 10 and are fixed by clamps 11 relative to the vertical part of the crosshead. Each of the carriages consists of a platform 12 with a profiled surface and rollers 13 with a vertical axis of rotation, supported by guides 14, mounted on the vertical part of the metal structure 15 of the continuous casting machine.

 In the second embodiment, the trolleys for the intermediate ladles of the continuous metal casting machine (Fig. 3), the carriages 16 are suspended from the support frame 1 by means of flexible cables 17. The profiled surface 18 is located on the vertical part of the beam 5, and the roller 19, resting on the profiled surface, is installed on the carriage platform 16.

 The work of the trolley for the intermediate ladles of the continuous casting machine is as follows.

 Before the beginning of the continuous casting work process, the intermediate bucket 7 is mounted on the trolley, while it rests on the horizontal parts of the ┘-shaped cross-beam 5. By turning on the drives of the running wheels 2, the trolley moves along the guides 3 to the working position. In this position, the yoke 5 together with the intermediate bucket 7 is raised. The rollers 8, mounted on the traverse, rest on the profiled surfaces of the carriages 9. To prevent the horizontal swing of the traverse at the moments of start-up and braking of the trolley, it is fixed relative to the carriages 9 with a latch 11.

 When filling the bucket 7 with metal and lowering the traverse 5, the rollers 8 move along the profiled surface of the platforms of the carriages 9, and the carriages with their rollers 13 with a vertical axis of rotation rely on guides 14 mounted on the vertical part of the metal structure 15, thereby compensating for the deflection of the elements of the ┘-shaped traverse and the supporting frame 1 and providing a strictly defined centering of the axes of the glasses of the intermediate ladle 7 relative to the mold 20 of the continuous casting machine.

 In an emergency, the intermediate bucket 7 rises, while the rollers 8 roll upward along the profiled surfaces of the carriages 9 without moving out of them. In the raised position, the trolley is rolled out from its working position into the zone of emergency containers, while the rollers 13 of the carriages 9 roll along the guides 14, mounted on the vertical part of the metal structure 15 of the continuous casting machine.

 The proposed trolley for the intermediate ladles of the continuous metal casting machine allows combining the advantages of analogues, the ┘-shape of the traverse, which allows moving and lifting mechanisms out of the hot metal impact zone and eliminating the traverse bending, which, in turn, ensures high accuracy of the exhibition in the center of the mold bucket molds and reliability of the casting process.

Claims (1)

 A trolley for intermediate ladles of a continuous metal casting machine, comprising a running gear with a support frame mounted on guides, a ladder traverse pivotally connected with a lever mechanism for lifting it, and rollers supported on a profiled surface, characterized in that it is provided with carriages horizontally fixed relative to the traverse and freely suspended from the support frame, each of the carriages consists of a platform and rollers with a vertical axis of rotation, supported by guides, while the rollers are fixed len on the traverse or on the platforms of the carriages, and the profiled surface is made respectively on the platforms of the carriages or on the traverse.

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