Prefabricated assembly type column type inspection pit capable of adjusting rail top elevation

Abstract

The invention discloses a prefabricated assembly type column type inspection pit capable of adjusting the rail top elevation. The prefabricated assembly type column type inspection pit comprises a factory prefabricated part hollow upper short column, a U-shaped bottom plate, a lower short column and an antiskid convex falcon, and the U-shaped bottom plate, the lower short column and the antiskid convex falcon are fabricated into a whole in a casting mode in a factory. A lower sleeve steel plate is pre-embedded in the top of the lower short column. A middle sleeve steel plate is pre-embedded inthe bottom of the hollow upper short column. An upper sleeve steel plate is pre-embedded in the top of the hollow upper short column. A mirror screw thread adjusting-high screw is screwed in the space between the lower sleeve steel plate and the middle sleeve steel plate. A rail and a rail connector are installed in a sleeve of the upper sleeve steel plate. The prefabricated assembly type columntype inspection pit has the beneficial effects that field humidifying operation is avoided effectively due to part prefabrication, the prefabricated parts are simple and fast to assemble, the construction period is shortened, and project quality is improved; the screwed-in degree of the mirror screw thread adjusting-high screw is adjusted, thus the rail top elevation is controlled, and the rail top elevation can be adjusted both in the construction period and after construction is completed; and the operation is simple and effective, the work content of large-range foundation treatment is canceled, construction procedures are reduced, and project cost is lowered.

Description

technical field [0001] The invention relates to a post-type inspection pit for urban rail trains, in particular to a prefabricated post-type inspection pit with adjustable rail top elevation. Background technique [0002] At present, cast-in-place column inspection pits are used in the large warehouses of urban rail transit stations for daily maintenance of urban rail trains. figure 1 It is a schematic plan view of the existing post-type inspection pit. The advantages of the cast-in-situ post-type inspection pit are convenient construction and good overall performance. The foundation treatment plan is adopted to control the impact of settlement, the construction is cumbersome, the cost is high, and the height of the rail top cannot be adjusted twice after completion. Once the settlement of the rail on the pillar inspection pit exceeds the standard after completion, it will cause the train to run bumpy and the steel wheels to wear. There is even the risk of the train tilting...

AI Technical Summary

Problems solved by technology

figure 1 It is a schematic plan view of the existing post-type inspection pit. The advantages of the cast-in-situ post-type inspection pit are convenient construction and good overall performance. The foundation treatment plan is adopted to control the impact of settlement, the construction is cumbersome, the cost is high, and the height of the rail top cannot be adjusted twice after completion. Once the settlement of the rail on the pillar inspection pit exceeds the standard after completion, it will cause the train to run bumpy and the steel wheels to wear. There is even the risk of the train tilting and overturning

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