Insulation and damping device for end elbow of contact rail

Abstract

The invention relates to an insulation and damping device for an end elbow of a contact rail. The device at least comprises an upper attachment, an insulator and a lower attachment, wherein the insulation and damping device is arranged on the back of the current-feeding surface of the contact rail, and the upper attachment is connected to the contact rail; the lower attachment is connected to a track beam or other installation foundations, and the insulator adopts an elastic damping material. Since elastic restraint on the end elbow is formed by means of the insulation and damping device for an end elbow of a contact rail, the impact which is caused when a collector shoe of a vehicle current collector passes through the end elbow of the contact rail can be buffered, the electric arc ablation is reduced, and meanwhile insulation requirements of the end elbow are met, so that an incident that since a charged end elbow enters the insulation clearance, a power supply system cannot work normally is avoided.

Description

technical field [0001] The invention relates to an insulation buffer device for an elbow at the end of a contact rail. Background technique [0002] In the contact rail power supply system, the end elbow is a device used to ensure that the vehicle current collector can smoothly transition to the horizontal contact surface of the steel-aluminum composite rail. One end of it is parallel to the steel-aluminum composite rail, and the other end is bent at a certain angle to facilitate the smooth transition of the collector from the extended state to the compressed working state. According to the running speed of the train, it can be divided into high-speed end elbows and low-speed end elbows. As the running speed of the train increases, the slope of the elbow at the end will decrease, and the length of the elbow will extend. When the space between the flow transfer surface and the installation foundation is small, such as the contact rail installed on the side of the DC750V stra...

AI Technical Summary

Problems solved by technology

As the running speed of the train increases, the slope of the elbow at the end will decrease, and the length of the elbow will extend. When the space between the flow transfer surface and the installation foundation is small, such as the contact rail installed on the side of the DC750V straddle monorail, the installation space is only 140mm, the space between the back of the flow transfer surface and the installation base surface is too small to set the original support

Too long contact rail end elbow, when the vehicle current collector passes through and contacts the end elbow, it is easy to cause the strong impact of the collector shoe of the current collector and the end elbow to cause vibration, and the end elbow and the current collector There will be arc ablation between the boots, and the end elbow may damage the collector boots due to excessive rigidity, or violate the vehicle boundary and insulation clearance due to excessive stiffness, which will cause the train to stop running and cause major accidents in severe cases

Therefore, there are defects in the existing end elbows, which cannot fully meet the requirements of the contact rail power supply system under high-speed conditions, and urgently need to be improved.

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