In dusty and icing areas, the specifications of the outer splint should be the same as those of the angle wire of the trolley wire. The specifications of the inner splint should be smaller than the angle of the outer splint and the length of the inner and outer splints should not be less than 100 mm.
Circular section of the trolley wire should be avoided during construction. If you need to connect the heads, use a file to smooth the head and make it have sufficient mechanical strength. After the trolley line has been machined on the ground, it can be attached to the rack with a rope. When lifting, in order not to bend the trolley wire too big, it is better to put a lifting pulley every 8 meters, and slowly lift it with human power, and fix it on the porcelain bottle.
The bolt holes of the fixed splint should be ovalized for easy adjustment. Slide wire should be fixed as straight as possible. Along the full length of the trolley line, the error between the trolley line arrangement and the centerline shall not exceed 10 mm on both the horizontal and vertical planes. The error of the distance between the trolley wires should not exceed 10 mm to ensure that when the crane is in operation, the collector is balanced and reliably accessible along the entire trolley line plane, allowing free and unobstructed sliding. In some large buildings, because the line of the trolley line is longer and the voltage drop exceeds the allowable value, additional auxiliary lines are added to the trolley line. Auxiliary wire is generally aluminum row, the fixing method, every 12 meters with Ml0 bolts and nuts connected once, the connection should be coated with tin.
Shanghai Chaodian Electric Technology Co., Ltd. reminds you that when the length of the trolley line exceeds 50 meters, a compensation device should be set to accommodate the settlement and temperature changes of the building. Multi-strand copper conductors can be used for jumper wires, leaving a margin with the same cross section as the power conductors. The contact surface of the contact wire of the connection terminal should be coated with tin to make good contact with the angle steel. The edges of the two ends of the trolley wire should be rounded with a file, and the two ends should be on a horizontal plane, and the height difference should not exceed 1 mm. At the same time, near both sides of the expansion joint, the trolley should be equipped with a bracket. The distance from the centerline of the gap to the centerline of the bracket should not exceed 300mm. The method of connecting the power cable to the trolley wire can use a 40x4 flat steel welded on the trolley wire. Flat steel bolts should be drilled first, and a layer of tin be coated around the holes to make good contact between the terminal and flat copper.
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