A deicing bow head suitable for "t" type rigid catenary

Abstract

A deicing bow suitable for "T" type rigid contact receiving net, characterized by the structure of the deicing bow: three deicing metal brushes are arranged on the top surface of the supporting plate, deicing knives are fixed on the front and rear of the supporting plate, and the supporting plate There are more than one pair of rollers on the upper hinge, two rows are fixed on the bottom surface of the pallet, and each row has three pallet brackets. The lower part of each bracket is movably inserted into the notch on the base of the bow head, and is movably fitted on the screw through the hole on the bracket. Screws are screwed on the supporting plate bracket, and a spring is respectively fixed between the two sides of each bracket and the base of the bow head. The invention can effectively remove the icing of the catenary, and has the advantages of stable flow.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a deicing device for a "T"-shaped rigid catenary suitable for alpine regions and tunnels. Background technique [0002] The catenary is unique to electrified railways. It is a special power supply line erected along the rails to provide electric energy for electric trains. As an outdoor power transmission system, it must withstand the influence of all natural conditions, such as wind, sun and rain. It must also withstand the impact of the pantograph on the catenary and the resulting vibration and fatigue. [0003] Overhead catenary is divided into rigid catenary and flexible catenary. Compared with flexible catenary, rigid catenary has certain advantages, such as small space occupation, no need to set anchor device, less parts, safety and reliability, etc. . The construction of railways in high cold and high-altitude mountainous areas requires the construction of many long...

AI Technical Summary

Problems solved by technology

[0004] Most of the existing rigid catenary use "I"-shaped bus bars to clamp the contact line. The humidity in the tunnel is high and water seepage occasionally occurs. Seepage water is easy to accumulate on the top of the bus bar, and this structure makes seepage flow to both sides and At the bottom line clamp; if the tunnel is in a low temperature environment for a long time, seepage and ice will wrap the entire busbar and contact wires, which will seriously affect the flow of the pantograph, and it will be difficult to remove if the ice is thick

[0005] At present, catenary deicing can be divided into artificial deicing, high current thermal deicing, natural passive anti-icing and other methods, but the efficiency of these deicing measures is extremely low; in France, lines with operating speeds less than 200km / h In the past, a deicing device similar to the pantograph was installed on the front end of the pantograph, but there are some problems in the existing deicing device: (1) The ice coating of the rigid catenary is more serious, and the thicker ice layer is difficult to remove , resulting in incomplete deicing and affecting the flow

(2) During the high-speed running of the train, the rigid impact of the deicing device and the ice coating is likely to damage the rigid catenary, and at the same time cause serious deformation of the deicing device, and even detach from the ice layer to achieve the deicing effect

(3) Existing deicing devices are mainly used in flexible catenary. When used in rigid catenary, it is easy to cause the deicing device to wear too fast, and the regular replacement of the worn out deicing device consumes a lot of labor costs

(4) Severe shaking during the deicing process can easily halve the deicing effect, lack of fixing and guiding devices

[0006] Therefore, based on the background that some lines are located in alpine regions and pass through many tunnels, it is necessary to design a new type of rigid catenary and a supporting deicing device to solve the problem of icing and no effective deicing measures for the rigid catenary in the prior art. question

Images