What are the common structures of pantographs for trolley locomotives?
The trolley locomotive is a common type of electric locomotive, which obtains electric power through the contact of the pantograph with the overhead line. The pantograph is an important part of the wire locomotive. According to its structure, it can be divided into three types: single arm pantograph, double arm pantograph and diamond pantograph.
The single-arm pantograph, the most common type, consists of a curved metal arm that transfers electrical power by making contact with the overhead line. The single-arm pantograph is simple in structure and easy to operate, and is suitable for most trolley locomotives.
The dual-arm pantograph is a relatively new design that consists of two metal arms that provide a more stable electrical contact and improve the efficiency of current transfer. The double-arm pantograph has better stability and reliability under certain special conditions, such as high-speed running or curve driving.
A rhombus pantograph is a special design consisting of four metal arms in the shape of a rhombus. The rhombic pantograph can provide a larger contact area, increase the stability and efficiency of current transmission, and is suitable for high-speed trains or trolley locomotives under special working conditions.
In short, the pantograph structure of the trolley locomotive has three types: single arm, double arm and rhombus. The selection of a suitable pantograph structure depends on the specific requirements and operating conditions of the electric locomotive.
