无轨电车由于受车顶两根架空线接触杆(辫子)的限制,只能按前后顺序行驶。本实用新型克服了这一缺点,后车能超越前车、增加行驶自由度。它的主要部件是擒纵机构(如图)。当后车超越前车时后车的辫子偏转,辫子上的擒纵机构的擒纵叉(2)擒住前车该机构上的中空压杆(8),在其作用下将前车辫子压下脱离架空线,(前车凭惯性继续向前 Trolley buses are limited by the two overhead line contact rods (braids) on the roof and can only be used in tandem. The utility model overcomes the shortcoming that the rear car can overtake the front car and increase the driving freedom degree. Its main component is the escapement (pictured). When the car overtaking the car ahead of the braid deflection, braid on the escapement escapement fork (2) Capture the car before the body of the hollow pressure rod (8), in its role under the front car braid pressure Under the overhead line, (front car by inertia to move forward