Trolley drive mechanism type

Self-propelled trolley run institutions, each with a small car with four wheels, half based on.Steel crane Its rotation types are divided into two categories, namely with open gears and gear are all closed.

Start gear

Open running gear mechanism enclosed in high-level phase shell inside, oil bath lubrication; using low-grade open gear. Made ring style open gear and the wheel together with the wheel center around a fixed axis. This drive type, can meet the requirements of heavy working conditions, with sufficient reliability, the disadvantage is inconvenient handling wheels overhaul.

Open gear drives the biggest drawback is badly worn, so general-purpose trolley  overhead bridge crane  operating agencies, mostly with closed gear type.

Enclosed gear drives

Arranged between the two intermediate gear wheels, the drive shaft of the torque by the smaller axis of each side of the shaft torque of the torque gear half. Reducer output shaft to the wheel between the use of semi-floating shaft gear couplings and coupling (two floating shaft can grow, you can also unequal length), or a full-tooth couplings and a floating shaft coupling. The advantage of this type is to allow the installation of large deviations, easy installation, good handling grouping. From the weight of more than 10 tons of overhead  hoist crane   are using this type of car. This type of drawback is due to the large wheel bearings and couplings, operating mechanism becomes complicated and bulky, resulting in higher costs.