An adaptive variable inclination multi-drum current receiving device for electric locomotives

Abstract

The invention discloses an adaptive variable inclination multi-roller current receiving device for an electric locomotive, which includes a plurality of metal rollers and a roller base for placing the metal rollers; includes a bottom plate, a side plate, a first top plate and a second top plate ; It also includes a movable plate opposite to the side plate; the side plate and the movable plate are provided with square holes corresponding to the metal roller one by one; one end of the roller shaft of the metal roller is embedded in the square hole of the side plate, and the other end is embedded in the movable plate inside the square hole; the roller shaft is movably sleeved on the screw through the opening; the metal roller is provided with a brush that is in contact with the roller shaft for receiving current; there is also a sliding device for driving the movable plate to move; the metal roller is in contact with the roller. Line contact receiving current; the invention can adjust the angle between the roller and the contact line according to the change of locomotive speed and traction power, and effectively reduce the wear of the pantograph head and alleviate the mechanical impact with the contact line, and change the contact area to adapt to Variations in traction current.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to an adaptive variable inclination angle multi-drum current receiving device for electric locomotives. Background technique [0002] The electrical energy required by an electric traction locomotive is transmitted by means of one or more current collectors, called pantographs, mounted on the top of the train car, in direct contact with the contact suspension above it. The part where the pantograph is in direct contact with the contact wire is called a carbon slide, through which electric energy penetrates into the on-board equipment and weak point equipment. Therefore, the pantograph-catenary system is the key to the stable power transmission of the train. [0003] Many design parameters of the pantograph and catenary affect the performance of the pantograph-catenary system. For the pantograph-catenary system with a high speed target value, the dynamic interaction performance ...

AI Technical Summary

Problems solved by technology

[0004] The deficiencies of traditional pantographs will seriously restrict the speed of trains. The structure, material and size of pantographs have been improved, but the following problems exist when the locomotive speeds up and the load changes: (1) During the high-speed operation of the locomotive, the flexible contact between the carbon skateboard and the contact wire will gradually evolve into a rigid impact; in severe cases, it will cause the carbon skateboard to collapse and fall when it passes through the hard point of the contact wire, resulting in the carbon skateboard and the contact wire. The effective contact area is reduced, which in turn generates more Joule heat to increase the temperature of the conductive spots, making the carbon skateboard age faster

(2) Insufficient fit between the carbon slide plate and the contact wire will cause unstable flow, resulting in frequent arcing, which will cause thermal erosion to both the contact wire and the carbon slide plate

(3) Under the high-speed movement of the current-receiving device of the drum, the rotation speed of the drum cannot keep up with the speed of the vehicle, and it will still slide and rub against the contact line and produce rigid impact

(4) The number of pantograph slides supported by the traditional pantograph head is fixed, that is, the contact area with the contact wire remains unchanged. When the locomotive is under heavy load and speeding up, the traction current flowing through the pantograph increases , the contact resistance remains unchanged and the traction current increases, resulting in an increase in Joule heat, which accelerates the loss of the pantograph, so it is difficult to effectively adapt to large changes in traction power

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