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Related Posts. Case study of 7. Main Girder across the span. It consist of Electric Hoist travelling on lower flange of Main Girder and not required rail for cross traveling. It consist of a crab mechanism travels above both girders run over cross travel rails with platform to maintain all parts of crab. Single Girder Cranes generally have no platform for maintenance,or have 2 small platform for LT mechanism maintenance. Double Girder Cranes have both sides platform across the main girders for maintainance purpose and platform for crab maintenance.
Single Girder cranes can be operated through pendent and Radio Remote but they can not operated through operating cabin. Double Girder cranes can be operated by pendent ,Radio Remote and operating Cabin,all operation mode is available.. Single Girder cranes do not consist Electro Hydraulic thruster brakes due to its constrction,there is DC Disc Brake used in all motions.
In single Girder cranes we used snap action limit switch which initate by a wire rope guide for limiting Hoists movement in up and down motion. In DG EOT Cranes we used Rotary Limit switch which have a geared system to calculate hook travelling and limit it in up and down movement accordingly,there is an additional limit switch also placed as gravity limit switch to double secure limit switch working and protection.
Single Girder eot cranes used mostly upto 20 mtr span and 25T capacity for normal working. Double Girder eot cranes can be used from 1Ton to more than Ton as per requirement. Single Girder cranes used mostly in light applications for handling normal material with standard working conditions. Double Girder eot Cranes used in all type of applications for handling material and even in very critical atmosphere like cement,steel and oil and Gas.
Single Girder crane follow IS Double Girder Cranes follow IS Single Girder cranes designed with 4 wheel arrangement in LT End carriage so have higher wheel load and required heavy gantry girder comparatively for same capacity.
Double Girder Eot cranes can be designed with 8 wheel arrangement so wheel load at a particular point is lesser so gantry girder structure will be light comparatively.
DIFFERENCE BETWEEN SINGLE GIRDER AND DOUBLE GIRDER CRANE
Related Posts. Case study of 7. Main Girder across the span. It consist of Electric Hoist travelling on lower flange of Main Girder and not required rail for cross traveling. It consist of a crab mechanism travels above both girders run over cross travel rails with platform to maintain all parts of crab.
Double girder cranes
According to the difference of the motor,we devide double girder crane into two categorites:. EOT Crane. Double Girder Eot Crane. Products Description According to the difference of the motor,we devide double girder crane into two categorites: Double girder eot crane with hoist: It is composed by the main girder, end carriages, electric hoist with trolley, and electric control system. It is widely used in plants, warehouses or materials such as coil handling, container lift, railway workshop, paper mill and so on. Double girder eot crane with trolley: It is composed by the main girder, end carriages, winch with trolley, and electric control system. Double girder crane with double trolley: It is widely applied to loading and moving of normal weight in the fixed crossing space and also can work with various special-purpose hoists in special operations.
Double Girder EOT Crane
Double girder cranes are rugged in construction and find their use in a wide range of hoisting capacities and applications. The promoters of Aditya Cranes have experience of designing cranes up to MT capacity. Double girder EOT crane find their application in power plant, workshop duty, transformer industry, cable industry, process plants, steel plants, coal fields, cement plants, engineering industry to just name a few. In case of double girder crane, the trolley housing hoisting and cross traversing machinery move on the top of two bridge girders. The bridge girders are of box construction made from rolled plates. However for smaller capacities and spans, the bridge girders are also made from standard rolled sections.
Double Girder EOT Cranes / Electric Overhead Travelling Crane