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The Intended Application

Mobile gantries are largely supplied as a standard configuration but can also be custom designed and manufactured to specifically suit the customers intended application and unique requirements.

One of the most essential considerations you will need to make is the dimensions of the gantry, which includes the overall length, height and width and should also take factor in any obstructions or limitations that may apply. The internal dimensions of the gantry are of equal importance and will include the span and effective length, as well as the size and nature of the load and placement of the load.

'A' Frame Gantries

An ‘A’ frame gantry is designed for heavier duty work and applications where the structure will stay erected. Ideal for applications where heavy loads are required to be lifted regularly, like loading and unloading in yards/open areas or for use in a workshop, the structure is robust and should be considered for all general-purpose applications.

Heavy Duty or Light Duty Gantry?

Heavy-duty gantries should be considered for applications where:

  • The majority of the loads will be close to the gantry's safe working load (SWL)
  • Manual or powered lifting appliances will be used
  • Expected that the gantry will be used regularly and often
  • You require a robust gantry structure

Light-duty gantries may be considered for applications where:

  • Loads will mostly be below the gantry's safe working load (SWL)
  • Manual lifting appliances will be used
  • A less robust structure is suitable

Type of Bracing

If you have special bracing requirements please contact our technical sales team to discuss this and we will advise you accordingly.

Mobile Gantry External Brace
External Bracing

Applications requiring maximum internal clearance dimensions, that have no external obstructions, external bracing is suitable. It allows the maximum amount of travel along the runway and for wide loads to be lifted to the maximum height.

Internal Braced Gantry Icon
Internal Bracing

Applications where there are external obstructions, i.e. use over gangways or between machines, internal bracing is a viable option as it limits the amount of travelling along the runway.

Box Braced gantry
Box Bracing

Applications where maximum runway travel is necessary but external clearances are limited, a box braced gantry is a workable solution.

Rigid or Splice Braced Gantry Icon
Rigid/Spliced Bracing

Applications where maximum runway travel is necessary but external clearances are limited, a rigid/ spliced braced gantry is a suitable configuration.

Types of Castors

Choosing the right type of castor will largely depend on what kind of surface the gantry will be moved on and also whether the gantry is heavy duty or light duty. It's also worthwhile considering whether the wheels will need to be fitted with brakes or if that castors will need to be fitted with rotational locks for safety purposes.

Are Jacks Needed?

If your gantry is for light duty use it's recommended that jacks are utilised to ensure the load is not being supported on the castors. They're also recommended for applications requiring the gantry to be situated in one position for long periods of use. They can also be used to help level a runway.

Brakes and Locking Devices

Brakes and locking devices are important safety considerations for any mobile gantry and are recommended where an inadvertent movement could occur, for example if the gantry is being used outdoors and wind unexpectedly moves the gantry from it's desired operational position. Brakes and locking devices can be fitted to most gantries and can be used alongside or as an alternative to a jack to prevent movement.

The use of brakes, wheel locks and castor rotational locks should always be considered where inadvertent movement might occur, e.g. outdoor due to high winds. They may be fitted to most types of gantry and used in addition to, or as an alternative to, jack to prevent movement.

Choosing a Lifting Appliance

When choosing a hoist to work with your gantry them most common choices are manual chain hoists and electric chain hoists,and your decision will depend on the how frequently the gantry will be used, the load type and the intended working environment.

It's important to also bear in mind how the hoist will be connected to the gantry's runway beam which is dependent on how you plan to use your gantry and hoist, but could be achieved by trolley, beam clamps or fixed eyes. For electric chain hoists you will need to consider if you have a suitable power source available within your intended working space and it's important to take the necessary steps to avoid health and safety hazards e.g. trailing leads or hoses, and restricting the gantry's movements so that there is no tension on the power feed.

Remember that the hoist you pair with your gantry should only be used to lift loads rated to the safe working load (SWL) of the gantry.

Other things to consider

Other considerations to be made when choosing a mobile gantry include:

  • The runway beam will need to be fitted with end stops to prevent the trolley or the load colliding with the gantry supporting structure.
  • The gantry, together with its associated hoist and trolley, should be covered by the documentation required by legislation (EC Declaration of Conformity or report of thorough examination as appropriate).
  • Although the surface over which the gantry is to moved will have been taken into account when selecting the castors or wheels, it must be remembered that small objects, e.g. stones or metal offcuts, can wedge under wheels so extra care should be taken. to avoid these types of hazards.
  • The floor of your intended work space should be capable of sustaining the pressure points imposed by the gantry's wheels, jacks, etc.
  • For steel gantries they will usually be supplied primed and painted as standard. Alternative or additional finishing may be required to protect the loads being lifted/handled dependent on the application e.g. for food industry applications.
  • Not all mobile gantries are movable under load and if this is required please choose one of our gantries that is capable of this. Any gantries supplied as capable of movement under load must be used strictly in accordance with Hoist UK's written instructions.
  • Where a gantry will be weather exposed during operation it is recommended that you consider the provision of weather guards to prevent the runway track corroding and perhaps a rain cover and chain bag for the hoist could be necessary.