Large Factory Lifting, Mobile 500kg Rail Frame

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FullSharp · since 1991

FullSharp designed a four-legged steel frame carrying a 500 kg rail and a 500 kg electric hoist for a large factory with several fabrication areas that need lifting only now and then. The frame stands freely on its wide base and self-weight with no anchor bolts, and a forklift picks it up and sets it down at the next area.

A customer had a spacious factory with several fabrication areas far apart, each needing crane support only periodically. Installing a fixed crane at every area would be costly, and drilling into the floor to anchor columns was not allowed since the factory floor was already finished. The requirement was a 500 kg lifting device that could move from one area to another without drilling into the factory floor.

FullSharp designed and installed a four-legged steel support frame carrying a 500 kg overhead rail and a 500 kg electric hoist. The entire frame stands freely on the floor thanks to its wide base and self-weight, with no anchor bolts required. To move it to another area, the whole frame is simply lifted with a forklift and set down at the new location.

Mobile Support Frame with Overhead Rail and 500kg Electric Hoist installed in the workshop

The mobile support frame after installation: safety-yellow painted steel frame, 500 kg rail running along the top, and electric hoist hanging from a trolley that travels along the rail.

Frame Construction

Four-legged steel frame: box-section steel columns and beams, with truss-style diagonal bracing at the top and cross bracing in the middle to keep the frame rigid under off-center hoist loads. Painted safety yellow.
500 kg rail: mounted under the top beam, with a trolley running along the rail so loads can travel the full length of the frame. See the 500kg steel rail product.
500 kg electric hoist: electric chain hoist mounted on the trolley, raised and lowered by push-button, with stable speed and a load-holding brake. See the KITO electric hoist range FullSharp supplies.
Drill-free base legs: each leg has a wide base plate resting directly on the factory floor, with pre-drilled holes for anchor bolts if the customer later wants to fix it in place.
Electrical cabinet and emergency stop button mounted on the column, with cabling routed along the column and beam, keeping the area below tidy and safe for people passing underneath.

Key Specifications

Lifting capacity500 kg
Rail500 kg rated steel rail, trolley travels along the rail
Lifting device500 kg electric hoist (electric chain hoist)
StructureFour-legged steel frame, truss bracing at top, painted safety yellow
InstallationStands freely on the floor, no drilling required
RelocationLift the whole frame with a forklift and set it down at the new area
Frame dimensionsDesigned to match each factory's equipment envelope and walkways

Which Factories Should Use a Mobile Support Frame

Large factories with multiple areas

One frame used in rotation across several fabrication, assembly, and packing areas instead of investing in a separate crane for each area.

Floors that cannot be drilled

Epoxy floors, floors with underground systems, rented facilities, or cleanrooms: set the frame down and it is ready to use, and it can be removed without leaving a trace.

Batch-based work

Production lines that change layout often or seasonal orders: the frame follows the work instead of requiring the factory structure to be modified each time.

Compared to a Fixed Crane and a Wheeled Gantry Crane

Compared to a fixed crane: no anchor columns or support beams need to be attached to the factory building, cost is much lower, installation takes only a day, and it can be taken along when relocating the factory.
Compared to a wheeled gantry crane: the four-legged frame is more stable when lifting off-center loads, and covers a wider area thanks to the rail running along its length, making it suitable for loads of 500 kg and above. See more gantry crane projects if you need a hand-pushed type for continuous movement.
It can later be upgraded to a double-girder crane or fitted with an additional jib crane mounted on the column as demand grows.

Frequently asked questions

How do you lift in several areas without a crane at each?

Use one mobile hoist frame and move it to the area that needs it. In this project a forklift lifts the whole frame to the next location.

How does the frame stay stable without anchor bolts?

It stands on a wide base and relies on its own weight, with diagonal and cross bracing in the steel structure. No drilling into the finished floor is needed.

What capacity does it have?

Both the rail and the electric hoist are rated for 500 kg. FullSharp sizes the frame span and height to the real work. The hoist hangs from a trolley that travels along the top rail.

Similar projects

Get Advice on a Support Frame Installation for Your Factory

FullSharp surveys the site, measures the equipment envelope and walkways, and calculates the load to select the right steel section and rail. We then fabricate at our factory, install, and load-test on site at your facility. See more completed support frame projects and 500kg rail projects, or the standard support structure product.

Mobile 500 kg four-legged rail frame with electric hoist, moved by forklift and no floor anchors