Hearth carriage connection structure of rotary hearth furnace

一种回转炉床炉、炉床台车的技术，应用在炉、炉子类型、炉子组件等方向，能够解决炉床不能保持圆形、回转障碍等问题

Active Publication Date: 2009-05-20
NIPPON STEEL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the furnace cools, looseness occurs between the bolts and the nuts, and looseness between the hearth trolleys 10 cannot be avoided.
Therefore, the hearth cannot maintain a circular shape in a cold state, which has the disadvantage of causing obstacles to rotation.
In order to prevent this disadvantage, there is a problem that it is necessary to adjust the tightening amount of bolts and nuts every time there is a temperature change such as heating and cooling due to work

Method used

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  • Hearth carriage connection structure of rotary hearth furnace
  • Hearth carriage connection structure of rotary hearth furnace
  • Hearth carriage connection structure of rotary hearth furnace

Examples

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Embodiment Construction

[0033] Figure 1~4 One embodiment of the present invention is shown. In this embodiment, the hearth 5 of the rotary hearth furnace 1 is constituted by connecting a plurality of hearth carriages 10 a to 10 n in a ring shape by a coupling device 20 . The hearth 5 is constructed of a refractory building bed 6 and a hearth material 7 . The refractory material building bed 6 is configured on the iron plate 8 above the trolley. The hearth trolley 10 mainly includes a trolley frame 12, a running device 30 and a metal piece 40 supporting an iron plate on the trolley.

[0034] between hearth trolleys 10, as figure 1 As shown, a plurality of coupling devices 20 are arranged, and adjacent hearth carts 10 are coupled to each other by the coupling devices. A plurality of coupling devices 20 arranged between the trolleys are only arranged in one row on the same horizontal plane, and there is no such Figure 11 As shown in the example, it is arranged in two columns up and down. exist ...

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Abstract

A rotary furnace hearth wherein a hearth carriage carrying a hearth comprises a plurality of hearth carriages respectively having propulsion systems, wherein adjoining hearth carriages are coupled by coupling bolts and nuts via spacers interspaced in a single row in a horizontal plane, whereby even if the hearth carriages deform due to heat at the time of operation, they are structured to be able to freely deform without mutual constraint in the event of curved deformation, so the hearth carriages are maintained in individually stable states at all times.

Description

technical field [0001] The present invention relates to a rotary hearth furnace used for producing reduced iron agglomerates by heating and reducing iron oxide agglomerates containing iron oxides such as iron ore and ironmaking waste and reducing agents such as carbon materials. Hearth trolley combined structure. Background technique [0002] The rotary hearth furnace has a rotary hearth in which a hearth refractory material is installed on a hearth trolley with a traveling device, raw materials are loaded on the upper surface of the hearth refractory material, and the raw material is heated from above for sintering and reduction. This rotary hearth has a structure in which a plurality of hearth carriages are ring-connected from the viewpoint of production and transportation. As this bonding structure, generally, a Figure 10 The illustrated welded structure 50 welds adjacent hearth trolley members 14a, 14b or Figure 11 The multi-stage bolt fastening structure 52 shown in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B9/16F27B9/30F27D3/12
CPCF27D3/123F27B9/30F27B9/16F27D3/12
Inventor 岛真司中山俊幸柴田智明
Owner NIPPON STEEL CORP
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