Sichuan's new type of crane trolley features low manufacturing costs and minimal energy consumption during operation.
Category: Industry News
Release time:2020-02-13
Traditional crane trolley frames typically feature an indeterminate structural layout, with component technologies and design arrangements that lack optimization. As a result, the entire machine tends to be bulky and excessively heavy. These conventional trolley frames are often constructed as rigid, indeterminate frameworks welded together from two end beams, multiple cross beams, and numerous reinforcing ribs—on top of which thick steel plates are laid. This design not only leads to significant drawbacks such as high weight, elevated costs, complex structural and welding processes, and excessive rigidity but also makes the system highly susceptible to issues like three-point wheel contact, uneven wheel load distribution, and wheel flange wear on the rail. Such problems severely compromise both operational safety and the equipment's service life.
The new type of crane trolley used in Sichuan features an I-beam three-girder trolley frame with a statically determinate support system based on three pivot points, where the crossbeam is designed as an open-type pulley beam. This trolley frame exhibits sufficient vertical rigidity to minimize vibrations when lifting heavy loads. At the same time, it maintains a degree of flexibility in terms of horizontal torsion, allowing the trolley frame to accommodate moderate twisting deformations—thus ensuring that all four wheel supports can adapt effectively to any deflection in the main beam.
Through the comparison of the trolleys from traditional and new cranes outlined above, Sichuan's new crane equipment can reduce its overall machine weight by 20% and also decrease in height by 20%, significantly cutting down on the construction area required for the factory building—and consequently lowering both initial capital costs and ongoing operational expenses.
Keywords: Sichuan's new type of crane trolley features low manufacturing costs and minimal energy consumption during operation.
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