Sub-rail isolating protective sleeve

Abstract

The invention relates to a sub-rail isolating protective sleeve. The sub-rail isolating protective sleeve comprises an isolating protective sleeve body, wherein the isolating protective sleeve body comprises a fixed support and a skirt plate; a clamping groove structure is arranged on the upper part of the fixed support and corresponds to the bottom of a steel rail; the skirt plate comprises two sub skirt plates; the two sub skirt plates are arranged on two sides of the lower part of the fixed support along the longitudinal direction of the steel rail respectively, or a cavity is formed in the skirt plate along the longitudinal direction or the vertical direction of the steel rail; and the skirt plate is arranged below the fixed support. The sub-rail isolating protective sleeve has the characteristics of diverse structure, convenience in installation and maintenance, high economic efficiency and wide application range; and after the sub-rail isolating protective sleeve is assembled at the bottom of the steel rail, the space between the steel rail between two sleepers and a ballast bed is relatively closed, so that foreign matters are prevented from entering the lower part of the steel rail, potential safety hazards are eliminated, and the market prospect is very wide.

Description

technical field [0001] The invention belongs to the field of rail transportation, and relates to a rail auxiliary device, in particular to a device for isolation and protection between the rail bottom and the ballast bed. Background technique [0002] With social development and scientific and technological progress, large and medium-sized cities pay more and more attention to the development of urban rail transit. Urban rail construction, especially the construction of underground railways, has also been launched one after another. The power supply mode of urban rail transit is to feed electric energy to the train in the form of overhead contact line or third rail through the DC traction substation arranged along the line, and use the running rail as the return line for return flow. The third rail is to lay a special light rail in parallel on one side of the rail. The shape is similar to the rail, and the shape of the section is also "I" shape, but the volume is much small...

AI Technical Summary

Problems solved by technology

Due to reasons such as construction, maintenance, and passengers leaving behind, there will be metal and other conductive foreign objects on the track bed, so metal or other conductive objects will enter the lower part of the track and touch the rail. It is not easy to find and eliminate during the inspection process, forming a potential safety hazard. The hazards are mainly manifested in: when a conductive object touches the rail, if the other end of the conductive object is connected to the ballast bed or the metal parts on the ballast bed, the insulation between the rail and the ground will be destroyed. , large current will flow into the ground through conductive objects and metal parts on the ballast bed, forming a huge "stray current", entering other equipment or related facilities, and even causing electric shock to passengers on the platform; if the other end of the conductive object is in contact with other equipment , there will be a large current entering the equipment, causing damage to the equipment; in addition, after the conductor touches the rail, it will also affect the power supply equipment and communication signals, especially when a large current flows, the contact point between the conductor and the rail will generate A large amount of heat will burn out the rails in severe cases and cause "rail burning" accidents, which directly affect driving safety

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