Full-automatic tunnel mist spraying trolley for second-lining concrete curing

Abstract

A fully automatic spraying trolley for the maintenance of the second lining concrete of the tunnel, which is provided with an upper arch and a side arch around the main frame, and a side arch is respectively connected to the lower sides of the two sections of the upper arch. There is a trolley traveling mechanism at the lower end of the main frame, which mainly includes: rails, traveling wheels, travel switches, motors and driving mechanisms. A set of radial plate telescopic mechanisms are arranged on the front and rear radial end faces of the trolley, which mainly include: upper and lower spoke plates, upper and lower web plate fixing frames, electric push rods, force sensors, guide wheels and self-lubricating plates. There is an automatic spraying mechanism for curing mist on the arch, which mainly includes: a water storage tank, an electric heating steam generator, a nozzle, a temperature sensor, a humidity sensor and pipelines. There is a condensate accumulation and recovery mechanism under the main frame, which mainly includes: a liquid accumulation tray, an accumulation liquid tank, a water pump and a filter. The invention neither damages the concrete surface nor affects the on-site operation environment, but can ensure the temperature and humidity of the secondary lining concrete during the curing period.

Description

technical field [0001] The invention relates to a concrete maintenance device, in particular to a maintenance device used for the second lining concrete of a tunnel. Background technique [0002] During the construction of the tunnel, it is necessary to carry out secondary lining around the tunnel after the initial support. The secondary lining structure is not only a structural measure as a safety reserve, but also to ensure that the tunnel prevents water seepage during use and ensures that the surface is relatively smooth, smooth and beautiful. This requires that the tunnel secondary lining concrete has sufficient strength and durability. There are many factors affecting the strength and durability of concrete, among which temperature and humidity have the greatest impact on the strength and durability of concrete during the curing period of concrete. In the process of tunnel construction in my country, the concrete curing method generally adopts the direct curing method...

AI Technical Summary

Problems solved by technology

The actual effect of the above two methods is not good. On the one hand, the use of high-pressure sprinklers will cause serious damage to the concrete surface; on the other hand, the sprayed water will flow to the ground along the vault and side walls, which will affect the working environment on site. and waste water

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