Basic Concept of Semi Gantry Crane
Semi Gantry Crane is a lifting equipment between bridge crane and full gantry crane, with the following characteristics:
One side is supported on the track of the factory wall or column
The other side is supported by the legs on the ground track
Combines the advantages of bridge crane and gantry crane
Main components of Semi Gantry Crane
Main beam structure
Single beam or double beam design
Box beam or truss beam structure
Can be with or without cantilever
Support system
Fixed side: factory support structure
Mobile side: ground legs (usually 1-2)
Operating mechanism
Trolley operating mechanism (moves along the track)
Trolley operating mechanism (moves along the main beam)
Lifting mechanism
Electrical system
Drive control system
Safety protection device
Operation interface (cab or remote control)
Technical parameters of Semi Gantry Crane
Parameter Typical range
Lifting capacity 1-50 tons
Span 5-30 meters
Working level A3-A6
Lifting height 3-20 meters
Working speed 5-30m/min (trolley)
Application areas
Manufacturing
Machining workshop
Assembly production line
Warehousing and logistics
Special environment
Confined space operation
Site close to buildings on one side
Site where large span is required but limited ground space
Advantages and features of Semi Gantry Crane
High space utilization
Saving ground space on one side compared to full gantry crane
Suitable for wall layout
Good economy
Simpler structure than full gantry crane
Lower installation and maintenance cost
Flexibility
Customizable design according to site conditions
Adaptable to different span requirements
Selection considerations
Site conditions
Strength of plant structure
Ground bearing capacity
Available space size
Usage requirements
Maximum lifting weight
Working frequency
Special environment requirements (explosion-proof, anti-corrosion, etc.)
Budget constraints
Initial investment
Long-term maintenance cost
Semi Gantry Crane safety precautions
Regularly check the stability of the plant support structure
Ensure the accuracy and flatness of the track installation
Do not exceed the rated load
Windproof measures must be taken in windy weather
Operators must be certified to work
Semi gantry cranes are an economical and practical material handling solution, especially suitable for industrial sites with reliable building support on one side. Correct selection and standardized use can significantly improve production efficiency and reduce operating costs.