60 kg/m steel rail No.9 alloy steel inlaid-type fixed width quasi-diamond cross turnout and design method thereof

Abstract

The invention discloses a 60 kg / m steel rail No.9 alloy steel inlaid-type fixed width quasi-diamond cross turnout and a design method thereof. A through-length guard rail structure in a No.9 cross ofa wide gauge 60 kg / m steel rail is embedded with a wing rail type alloy steel acute angle frog and an obtuse angle frog, the frogs all adopt forged alloy steel core rails, and alloy steel inserts areembedded on wing rails in ranges of the 50 mm section from the throat of the acute angle frog to the core rails and the 50 mm section from the obtuse angle frog to the two core rails, so that it is ensured that the most unfavorable positions of the frogs run on the alloy steel, and the service life of the whole cross is greatly prolonged; and by arranging alloy steel guard rails on the outer sideof the obtuse angle frog, the safety problem of self-protection of a No.9fixed cross wheel is solved, driving safety is effectively guaranteed, locomotive vehicle speed is allowed to be increased to 30km / h, shunting operation efficiency of the turnout in a station is greatly improved, occupation and residence time of locomotive vehicles in each station line is obviously shortened, personal safetyof operation and safety risks outside a road are obviously reduced, maintenance cycle of work and operation is greatly increased, and stability of line foundation is greatly improved.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a rail crossing switch and a design method thereof. Background technique [0002] Cross turnout refers to a kind of railway equipment that two railway track lines cross each other on the same plane, which can guide the train to cross another line from one line. The most common crossing turnout is a rhombus crossing formed by two straight-line tracks of equal gauge crossing each other. When the gauges of the two tracks are different, a crossing turnout with different gauges is formed. [0003] In my country's largest land transportation port on the border with Russia, there are a lot of 1520 mm gauge and 1435 mm gauge wide quasi-gauge crossing equipment according to the line needs. With the increasing land trade between the two countries, there are many crossing equipment It can no longer meet the needs of fast and large transportation, and it is even more difficult to meet t...

AI Technical Summary

Problems solved by technology

[0003] In my country's largest land transportation port on the border with Russia, there are a lot of 1520 mm gauge and 1435 mm gauge wide quasi-gauge crossing equipment according to the line needs. With the increasing land trade between the two countries, there are many crossing equipment It can no longer meet the needs of fast and large traffic, and it is even more difficult to meet the increasingly stringent line safety requirements

[0004] The existing 1520 mm gauge and 1435 mm gauge crossing turnout equipment adopts fixed obtuse angle frog structure. In daily use, there is a large gauge 1465 mm and 43 kg / m steel rail connected to wooden sleepers at the central axis of the obtuse angle frog Weak strength and other issues, there are greater safety hazards

For example, the crossing turnout is a diamond-shaped crossing turnout with 43 kg / m steel rail No. 9 wide gauge and standard gauge. Due to the surrounding conditions, it is a non-standard equipment and has low structural strength. It can only allow rolling stock to pass at a speed of 10 km / h.

At border ports, the intersections of lines with different gauges are often throat switches connecting the manpower transshipment yard of the port station, the wide-gauge east crane yard, and the second airport. Some of them need to be reinstalled in various work yards through this branch. They are the most important wide-gauge plane crossing equipment in the whole station. However, there is no wide-standard-gauge plane crossing turnout that can be reinstalled in a short time in the market. Therefore, There is an urgent need to develop corresponding equipment to improve the strength and operating efficiency of wide-gauge and standard-gauge diamond-shaped crossing turnouts, and to fill the gap in the market

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