MH/MHE Electric Hoist Bridge Crane

Basic Overview

· DefinitionGantry crane, also known as overhead traveling crane, commonly referred to as a gantry, is a variation of the bridge crane. It features two legs beneath the main beam, allowing it to travel directly on ground tracks, with the main beam ends capable of having cantilever beams.
· FeaturesHighly efficient site utilization, broad operational scope, wide adaptability, and strong versatility.

Structure Composition

· Metal StructureIt is the mechanical frame of the crane, consisting of the bridge girder and the door girder, used for installing various mechanisms and bearing the load and weight of the crane itself. The bridge girder is mainly composed of the main beam and end beam, while the door girder is made up of the main beam, legs, and upper and lower crossbeams.
· Hoisting MechanismUsed for lifting or lowering cargo, it is the most important and basic mechanism in cranes. Depending on the working conditions, it can be a pulley or winch type. Generally, it consists of a driving unit, a wire rope winding system, a lifting device, and a safety protection device.
· Actuating MechanismThe system primarily consists of two major parts: the running support device and the running driving device. The running support device is designed to bear the crane's own weight and external loads, transferring all loads to the track foundation structure, which includes balancing devices, wheels, and tracks. The running driving device is used to propel the crane along the tracks, mainly comprising an electric motor, a reducer, and a brake.



 

Operating Principle

The gantry crane operates by combining horizontal (transverse) movements and a lifting mechanism that moves goods vertically, performing lifting tasks within a rectangular area and its overhead space. The rail-mounted crane moves along tracks laid on the ground, limiting its working range to the area covered by the tracks; in contrast, the wheeled crane is not restricted by tracks, allowing for a wider range of movement, including forward and backward movement, as well as 90° turns to navigate from one yard to another for operation.



       

Basic Categories

· General overhead craneOutdoor work, spacious site, easy for hoisting construction; good conditions for component entry. Generally, hoisting parts are longer and heavier, prone to natural conditions during hoisting.
· Explosion-proof overhead craneGood applicability across various industries such as mining and manufacturing; high work efficiency, capable of handling large volumes of goods in a short time; easy installation, with a wide range of options; and relatively reasonable pricing.
· Track-type container gantry craneThe lifting speed is lower while the large vehicle operates at a higher speed. The small vehicle speed can be determined based on the bridge girder span and the distance extended at both ends. The electrical drive system employs a thyristor DC or AC variable speed drive control system.
· Tyred Container Gate CraneEfficiently utilizes yard space, with relatively low construction costs, flexibility, and versatility. Can be moved from one storage area to another with a 90° wheel rotation for operation.
· Shore Container CraneA specialized crane for loading and unloading containers at the container terminal, featuring a large span, fast speed, and high efficiency, capable of placing containers into any slot on a container ship.
· Electric Hoist Gantry CraneAesthetically pleasing design, strong loading capacity, high precision, and easy operation.
· Cranes for bridge constructionAssembly does not require the transportation and hoisting site for precast beams in the bridge axis direction. Compared to crane jibs, the transverse setting method has higher construction efficiency, less damage to the beams, lower installation deviation, and significantly reduces the installation cycle and saves costs compared to traditional methods, meeting safety construction requirements.

Application Fields

· Metallurgy IndustryCapable of handling lifting and transportation of large-scale production equipment such as blast furnaces, steelworks, and rolling mills.
· Port TerminalIt is an essential equipment for loading and unloading goods, capable of quickly and efficiently handling the loading, unloading, and transportation of goods.
· Shipbuilding industryIt is a crucial piece of equipment for constructing large ships, capable of handling tasks such as hull lifting, welding, and painting.
· Logistics IndustryAn essential equipment for cargo handling and transportation, it enhances logistics efficiency and reduces costs.
· Energy IndustryIt is a critical equipment for large-scale energy facilities such as wind power, thermal power, and nuclear power generation, capable of handling tasks like equipment hoisting, transportation, and installation.
  
Many industries require cranes with unique functionalities tailored to their specific operational processes. We can design and optimize according to your specific lifting needs. We will closely collaborate with you to ensure each crane is perfectly customized to the situation, guaranteeing that every lifting solution meets your needs precisely..