Geared trolley structure as shown in figure,It consists of the left side plate (10), right side plate (7), hoist shaft (6), lifting rings (8) hand chain wheel (3) and driving axis (4) Plan trolley`s structure as shown in figure a pair of it additionally consists of left aspect plate (10) right aspect plate (7) hoist shaft (6) lifting rings(8). Both left and also the right aspect plate of the trolley`s have roller (1) The hoisting shaft goes through the left and right aspect plate and is true finished with the nut (12) The rings ought to be put in within the middle of the shaft and also the chain block flag on the lifting ring. The 20-ton geared trolley consists of 2 10-ton single track geared trolleys that are connected with special lifting ring. As for the geared trolley pull the hand chain (5) and therefore the driving axis (4) can rotate, and therefore the gear (2) can take roller (1) to line the track . as for the plain trolley simply push the...