32 results about "Frost weathering" patented technology

The invention provides an intelligent watering cart and a tank body thereof. The intelligent watering cart comprises a solvent adding device, and two solvents, namely the salt solvent and the haze inhibitor are included in the solvent adding device. The solvent adding device conducts automatic switching according to the weather situation of the external environment, the distributed different solvent components are controlled to be added into the tank body of the watering cart, the working demands of the tank body are met, and the effects that a fluid pipeline is prevented from being frozen inthe frost weather, ice and snow are molten, and haze is inhibited are achieved; and meanwhile, stirring blades can further be driven through combustion waste heat of an engine, and the more environment-friendly and energy-saving effects are achieved.

The invention belongs to the technical field of monitoring equipment, and in particular relates to a defrosting method for an outdoor monitor, which includes a camera, a central switch and a monitoring computer. The camera is connected to the monitoring computer through the central switch. Rotating anti-frost cover, the upper end of the anti-frost cover is provided with a defrosting assembly and an environmental monitoring assembly. The present invention is different from the existing fixed protective cover. Defrost through the defrosting component. Due to the use of the rotating protective cover, the defrosting component can be set in the blind area of ​​the top monitoring component, so as to avoid the movement of the defrosting component to block the camera during the defrosting process. Avoid excessive temperature inside the frost cover to generate water vapor, which condenses on the inner surface of the frost cover and blocks the monitoring of the camera.

The invention provides a frost-weathering construction method of channel lining concrete. The frost-weathering construction method comprises the following steps of: leveling a concrete surface; vibrating the concrete by using a plate vibrator until grout is formed on the surface; removing excess water in the concrete by using a vacuum hydro-exhaustion machine; stopping the vacuum hydro-exhaustion machine; revibrating the concrete by using the plate vibrator; revibrating the concrete to extract the grout before the initial condensation of the concrete; manually plastering to finish the surface; covering a moisturizing film on the surface; heating and maintaining the concrete surface by adopting a mobile infrared ray heating beam; and watering to moisturize and maintain the concrete surface so as to complete the frost-weathering construction of the channel lining concrete of the channel. The frost-weathering construction method is applicable to the channel lining concrete with large area and thin thickness; and when the frost-weathering construction method is adopted, both frost thawing resistance and frost heaving resistance of the channel lining concrete can be improved, the time of peeling the frosted surface of the concrete can be prolonged, and compactness and strength of the concrete can also be increased; and moreover the frost-weathering construction method has the advantages of simplicity in operation as well as low difficulty and quickness in construction, can be used for greatly accelerating the construction progress, and is slightly affected by environmental factors as a construction process in a special season.

Provided is a novel construction method adapted to the frost weather and used for spinning, extruding and expanding a thread pile. A concrete conveying pipe arranged in a drilling rod is omitted. An output pipe of a concrete pump car is directly placed in a protective pipe arranged in a pile well for concreting, so that the external distance of concrete conveying is shortened effectively, and the technical problem that normal construction fails because of freezing and blocking of concrete in the conveying pipe due to the frost weather is avoided.