Device for metering cast-in-place concrete of double-block ballastless track

Abstract

The invention discloses a device for metering cast-in-place concrete of a double-block ballastless track. The device is characterized by comprising an outer fixed cylinder and a partitioned metering cylinder, wherein the partitioned metering cylinder is arranged in the outer fixed cylinder and can rotate around the axis of the outer fixed cylinder; the upper end of the outer fixed cylinder is an upper baffle plate; the lower end of the outer cylinder is a lower baffle plate; a feed opening is formed in the upper baffle plate and connected with the outlet of a storage hopper; a discharge opening is formed in the lower baffle plate; the angle between the discharge opening and the feed opening is 180 degrees; a plurality of fan-shaped cells are uniformly distributed in the partitioned metering cylinder in the circumferential direction. Through the adoption of the device, the quantity of concrete, cast into a mold, of each casting position can be better controlled, so that the purposes of reducing the interference, to the construction precision, of manual refining, reducing the quantity of replaced and adjusted fasteners and workload, improving construction efficiency and lowering the construction cost are achieved.

Description

technical field [0001] The invention relates to a cast-in-place concrete construction device for a ballastless track of a high-speed railway, in particular to a measuring device for a double-block ballastless track bed cast-in-situ concrete. Background technique [0002] China's CRTS-I double-block ballastless track uses tool rails and double-block sleepers to form a construction rail row, and uses precision measurement methods to control the tool rails to indirectly determine the spatial position of double-block sleepers in the ballast bed. The cast-in-place track bed concrete permanently fixes the double-block sleepers in the reinforced concrete track bed, and the seamless track of the high-speed railway is formed after the tool rails are removed and replaced with long rails. [0003] High-speed railways require high precision to achieve high smoothness of the line. Before pouring concrete, multiple track parameters such as height, direction, and gauge of the tool rail mus...

AI Technical Summary

Problems solved by technology

[0004] However, at present, due to the fact that the cast-in-place concrete of the ballast bed cannot be measured, the amount of concrete poured into the mold is often more or less, requiring workers to stand in the ballast bed to even the material, plus vibrating, plastering and other operations, causing disturbance to the precisely positioned rail row, often As a result, the accuracy was out of control, and a large number of adjustment fasteners had to be replaced in the later stage, and the track parameters of the line were forcibly adjusted to improve the technical status of the line

Statistics show that for the double-block ballastless track formed by the previous casting process, the replacement rate of the adjustment fasteners in the later period is generally about 30% (or even more than 40%), and the cost of only replacing the adjustment fasteners is as high as 20-30%. 10,000 yuan / km, and a large number of replacement and adjustment fasteners at the same time, the remaining adjustment margin for the public works department responsible for the daily maintenance of the line is small, which is not conducive to the long-term maintenance of the line

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