DEVICE AND METHOD FOR EFFECTING ELECTRIC DRIVE OF HEAVY TRUCKS

摘要

The present invention relates to a device and a method to effect electric drive of heavy trucks, said device comprising on one hand a current transmission means (9; 109) mounted on the vehicle (1) and on the other hand an airborne supporting girder (11) that houses conductor rails (10). It is significant for the device according to the invention that the current transmission means (9) has guiding means (22) that may assume an inactive position and an active position, that the supporting girder (11) has a lower opening (31) through which opening (31) the current transmission means (9) may pass when the guiding means (22) assume inactive position, that the supporting girder (11) has grooves (30), that the guiding means (22) and the grooves (30) cooperate when the guiding means (22) assume active position, and that the current transmission means (9) has means to transfer electric current from the conductor rails (10) to a power source of the vehicle (1).