Choosing between an overhead and a jib crane
AMIO, a handling and lifting company, offers local authorities, developers and manufacturers its skills and expertise for the design and completion of their lifting projects. At the same time it guarantees good equipment and qualified staff, in a word: the guarantee of a genuine personal service.
Personalised handling and lifting service
AMIO Levage has been successful in bringing together renowned brands in the field of vertical lifting by hook. It provides personalised services for the design and implementation of any lifting and handling project.
A very diversified range of handling and lifting equipment:
- Fixed single-girder overhead cranes
- Suspended single-girder overhead cranes
- Fixed double-girder overhead cranes
- Suspended double-girder overhead cranes
- Handling gantrys
- Semi-gantry cranes
- Wall-mounted jib cranes
- Column-mounted jib crane
- PROSYSTEM light handling equipment
- Electric chain hoists
- Electric wire rope hoists
- Electric hoist winches
- Standard hook hoisting beam
- Vacuum hoisting beam
- Electromagnet hoisting beam
- Ground transfer trollies
- Radio controls
- Charge indication units with display
- Partial or total automation of handling and lifting equipment
Whatever its configuration, this lifting equipment will always consist of one or of two parallel girders joined together by two end-carriages, one at each end of the girder or girders. This forms a quadrangle and is the structure of the overhead crane. The only thing that differs between the fixed and the suspended overhead crane is the design of the end-carriages and the long-travel wheels. The first will roll on the rails, while the second will be suspended by the long-travel wheels under the rails.
This type of lifting device is installed when installing a frame with rails is technically complicated and restrictive. It is used in storage areas for raw materials, finished products, containers, etc... To simplify, we can say that it is an overhead crane with legs, but it travels along a track on the floor. The semi-gantry has handling gantry characteristics, as one part will travel on a track on the floor, and the other part will travel on a track at height as the overhead crane.
The jib crane
This is also part of the family of lifting devices. Its use is much more limited than the other devices mentioned above. Consisting of an arm fixed at one end and on an axis, the jib crane moves only by drawing an arc of a circle around its axis. The "wall" jib crane can be fixed to a wall or a building frame pole. This is called a wall-mounted crane. When there is no way to fix it as previously mentioned, it will be designed with a shaft or column and this will be fixed directly to the ground, either with chemical anchors if possible and if the load is not too heavy, or otherwise a reinforced concrete holder will have to be constructed with anchoring rods to fix the lifting bracket.
The electric hoist
The lifting devices mentioned above are of no use if they do not have a lifting method. The electric hoist is the device that lifts loads with its hook.
There are several families of electric hoist:
- The belt hoist: The belt, equipped with a hook is driven by a small drum, which is itself driven by a geared lifting motor. This hoist is used for activities where cleanliness is required and the loads to be handled are less than or equal to 5000 kg.
- The electric chain hoist: The lift chain is driven by a toothed wheel called the sprocket wheel which is driven by a geared lifting motor. This type of device is reserved for accurate lifting actions with loads of less than 6300 kg.
- The electric wire rope hoist: Lifting is done by means of a cable which is wound on a grooved drum. The latter is also driven by a geared motor designed for lifting. I: It's load capacity goes up to 50 tons. Beyond, a electric hoisting winch will be used. It is used on overhead cranes, gantry and semi-gantry cranes, but also on jib cranes,, monorails, etc.