Subway track-laying bed construction movable concrete mixer and subway track-laying bed construction method

Abstract

The invention relates to the technical field of railway traffic subway track-laying bed construction equipment and construction method, and specifically relates to a subway track-laying bed construction movable concrete mixer and a subway track-laying bed construction method. According to the invention, concrete is delivered to a mixing tank fixed on a flat truck through a feeding port; a rail car is started, and the flat truck runs on the rail under the drawing of the rail car; concrete is uniformly stirred by the mixing tank during the running process; when the mixing tank is drawn to a construction work surface by the rail car, the concrete in the mixing tank is delivered into a hopper of a trailer pump; transmission pressure is applied by the trailer pump, and the concrete is delivered to a construction casting position. Compared to prior arts, with the movable concrete mixer provided by the invention, a delivering distance is increased by using machinery, labor intensity of workers is reduced, concrete waste is reduced, track bed concrete construction speed is increased, rack bed concrete quality is ensured, and environment pollution is reduced. Original properties of modified mixing tanks and trailer pumps can be recovered.

Description

[technical field] [0001] The invention relates to the technical field of construction equipment and construction methods for rail transit and subway track beds, in particular to a mixer truck and a method for moving subway track bed construction. [Background technique] [0002] In the construction of urban subway tracks, commercial concrete is used for the construction of the track bed. The commercial concrete is transported to the discharge port, and the concrete is transported to the hopper for loading concrete through the discharge port. The hopper for loading concrete is generally a cuboid without a cover. And it has the function that three sides can be opened. It is transported to the front of the track bed construction operation by rail car, and the hopper loaded with concrete is hoisted to the construction work surface with a small rail-laying gantry, and the three sides of the hopper are opened in turn for concrete pouring. construction. [0003] The main disadvanta...

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Problems solved by technology

[0004] 1. During the transportation process, the concrete in a static state is prone to segregation, bleeding, and initial setting, which affects the workability of the concrete and makes the quality of the poured ballast bed unstable, which may not meet the quality requirements, so it is not suitable for long distances Transportation over 5km

[0005] 2. When the material port is opened, the concrete is unloaded to the construction work surface by its own weight, which will pollute the rails, sleepers, fasteners, etc., and cause waste of concrete

[0006] 3. When using a small gantry to transport the hopper to the working surface, it is necessary to increase the number of personnel to operate the small gantry, cooperate with loading and unloading, and track cleaning (contaminated rails, sleepers, fasteners), which increases the amount of labor

[0007] 4. Limited by the construction distance, as the length of the construction track bed increases, a new feeding port must be provided, and there are structural safety, waterproof and coordination problems in the reserved feeding port on the civil structure

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