Efficient prefabricated concrete shield segment steam-curing kiln and application method thereof

A technology of prefabricated concrete and shield segment, which is applied in the direction of manufacturing tools, auxiliary forming equipment, ceramic forming machines, etc., can solve problems such as insufficient resting time, poor production quality of segments, and irregular shape of the outer arc surface, etc., to achieve The effect of prolonging resting time, significant economic effect, and improving early strength
CN109676774APending Publication Date: 2019-04-26NO 4 ENG CO LTD OF CCCC FIRST HARBOR ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NO 4 ENG CO LTD OF CCCC FIRST HARBOR ENG CO LTD
Publication Date
2019-04-26

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Abstract

The invention provides an efficient prefabricated concrete shield segment steam-curing kiln and an application method thereof. The efficient prefabricated concrete shield segment steam-curing kiln comprises a kiln body, wherein a still-cured thermal insulation region, steam-cured heating region, a steam-cured constant-temperature region and a steam-cured cooling region are sequentially arranged inside the kiln body from an inlet to an outlet; and a plurality of groups of steam tubes are arranged in each of the steam-cured heating region, the steam-cured constant-temperature region and the steam-cured cooling region. A prefabricated concrete shield segment is placed on a maintenance truck, and has strength of 20 MPA after sequentially passing through the still-cured thermal insulation region, the steam-cured heating region, the steam-cured constant-temperature region and the steam-cured cooling region, wherein retention time, in the still-cured thermal insulation region, of the maintenance truck is 126-189 minutes. The prefabricated concrete shield segment can reach target strength within 6 hours, so that production efficiency is improved. About 7 million RMB needs to invest for construction and later-stage operation. About 60 millions of RMB can be saved for construction and production investment of a comprehensive field area, so that the economic effects are remarkable. Concrete still-curing time is prolonged, and early-stage strength of the shield segment can be effectively improved.
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Description

technical field

[0001] The invention relates to the technical field of steam curing equipment for concrete prefabricated parts, in particular to an efficient steam curing cellar for prefabricated concrete shield segments and an application method thereof. Background technique

[0002] In the production of precast concrete shield segments in subway tunnels or underground pipe gallery projects, the conventional practice is to use ground molds or fixed kilns or tunnel kilns with only 6 stations in the resting area for steam curing of precast concrete shield segment concrete. The defective that existing technology exists has:

[0003] 1) The steam curing mold of the traditional ground mold is on a fixed production platform, covered with a tarpaulin for steam curing, and the steam is transmitted through the control valve to complete the concrete steam. The production efficiency is only 1.5 cycles a day, and the working environment is humid and dirty. Lifting and hoisting operati...

Claims

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