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Packaging, Containerization, and Materials Handling
Published in John M. Longshore, Angela L. Cheatham, Managing Logistics Systems, 2022
John M. Longshore, Angela L. Cheatham
Overhead Cranes are used to move extremely heavy or bulky loads through the overhead space in a facility, instead of through aisles or on the floor, an overhead crane (also called an industrial crane, crane, or overhead traveling crane) is a machine that lifts, lowers, and moves a load horizontally. Overhead cranes have high lifting capacities for load movement. Crane travel is directed by an operator, either manually or with a wired pendant station or wireless controls that guide their electric- or pneumatic-powered travel. Typical uses include multi-directional movement of materials to support manufacturing, storage, loading or unloading activities inside a facility, outside in a yard, or at a railway or shipping port.
Safe moving and storing of materials
Published in Mike Tooley, Engineering Technologies Level 3, 2017
Fixed overhead cranes (or bridge cranes) are frequently used in large-scale manufacturing environments where they can handle loads of up to around 100 tonnes. An overhead crane consists of parallel rails with a bridge that travels along the rails, spanning a gap over which the load can be moved. The lifting part of the crane is a hoist fitted to the travelling part. The rails of the bridge are supported by the structural walls of the building in which the crane is used. Alternatively, if the bridge is self-supported, the crane is called a gantry or goliath crane. Unlike mobile jib cranes, overhead cranes are permanent and available for use whenever required. This makes them more cost-effective for use in manufacturing and maintenance applications.
Payload motion control for a varying length flexible gantry crane
Published in Automatika, 2021
Tung Lam Nguyen, Hong Quang Nguyen, Minh Duc Duong
Overhead cranes are widely used in many applications such as manufacturing factories, marine industries and harbour operations, due to their capability of transporting heavy loads or hazardous materials. However, as a typical under-actuated system, and in some situations, rope flexible deformation cannot be ignored, the crane load is frequently swinging during transportation processes, which affects the positioning accuracy of the load, and brings danger, damage, even accidents in working sites. Thus, the main problem in handling the crane system is to reduce the sway angle of the load and moving it to a desired position with a fast motion.
An active swing suppression control scheme of overhead cranes based on input shaping model predictive control
Published in Systems Science & Control Engineering, 2023
Weiqiang Tang, Erpeng Zhao, Lijuan Sun, Haiyan Gao
As a typical representative of crane systems, the overhead crane has the merits of simple structure, high load capacity and convenient operation, etc., widely used in cargo transportation in factories and ports (Ramli et al., 2017). For a specific transportation task, the control of a crane mainly includes hoisting, horizontally transporting and lowering. The hoisting and lowering are vertical operations which are easier to implement, while the horizontally transporting is the most challenging. This is because it is closely related to the positioning of the trolley and the swing of the payload.