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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

Pending Publication Date: 2019-04-26
NO 4 ENG CO LTD OF CCCC FIRST HARBOR ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 3) The tunnel kiln with only 6 stations in the static curing area does not have enough static curing time for the concrete production of the segment, which may easily cause a large number of air bubbles on the side arc surface of the segment, irregular line shape of the outer arc surface, and cracks. The quality is poor, the production efficiency is less than two cycles, and the efficiency is low

Method used

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

Examples

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Effect test

Embodiment 1

[0042] A high-efficiency prefabricated concrete shield segment steam-curing cellar, comprising a kiln body 1 arranged in a straight line, inside the kiln body 1 there are several maintenance tracks 2 along the kiln body 1, and on the maintenance track 2 there are several maintenance tracks 2 for curing The maintenance vehicle 3 driving on the rail 2 and carrying the segment mold, the entrance and exit of the kiln body 1 is provided with a ferry rail 4, and the ferry rail 4 is provided with a ferry vehicle 5 for driving on the ferry rail 4 and transporting the maintenance vehicle 3 ,

[0043]The interior of the kiln body 1 includes a resting heat preservation area 11, a steaming heating area 12, a steaming constant temperature area 13, and a steaming cooling area 14 from the entrance to the exit, and the adjacent areas are separated by insulation walls. Passing place is all provided with the spring door 15 that is convenient to maintenance car 3 to pass through, and the surface...

Embodiment 2

[0055] A high-efficiency prefabricated concrete shield segment steam-curing cellar, comprising a kiln body 1 arranged in a straight line, inside the kiln body 1 there are several maintenance tracks 2 along the kiln body 1, and on the maintenance track 2 there are several maintenance tracks 2 for curing The maintenance vehicle 3 driving on the rail 2 and carrying the segment mold, the entrance and exit of the kiln body 1 is provided with a ferry rail 4, and the ferry rail 4 is provided with a ferry vehicle 5 for driving on the ferry rail 4 and transporting the maintenance vehicle 3 ,

[0056] The interior of the kiln body 1 includes a resting heat preservation area 11, a steaming heating area 12, a steaming constant temperature area 13, and a steaming cooling area 14 from the entrance to the exit, and the adjacent areas are separated by insulation walls. Passing place is all provided with the spring door 15 that is convenient to maintenance car 3 to pass through, and the surfac...

Embodiment 3

[0068] A high-efficiency prefabricated concrete shield segment steam-curing cellar, comprising a kiln body 1 arranged in a straight line, inside the kiln body 1 there are several maintenance tracks 2 along the kiln body 1, and on the maintenance track 2 there are several maintenance tracks 2 for curing The maintenance vehicle 3 driving on the rail 2 and carrying the segment mold, the entrance and exit of the kiln body 1 is provided with a ferry rail 4, and the ferry rail 4 is provided with a ferry vehicle 5 for driving on the ferry rail 4 and transporting the maintenance vehicle 3 ,

[0069] The interior of the kiln body 1 includes a resting heat preservation area 11, a steaming heating area 12, a steaming constant temperature area 13, and a steaming cooling area 14 from the entrance to the exit, and the adjacent areas are separated by insulation walls. Passing place is all provided with the spring door 15 that is convenient to maintenance car 3 to pass through, and the surfac...

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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.

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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Application Information

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IPC IPC(8): B28B11/24B28B17/00
CPCB28B11/245B28B17/00
Inventor 吴家云白连胜王根叶
Owner NO 4 ENG CO LTD OF CCCC FIRST HARBOR ENG CO LTD
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