Double Girder Semi-Gantry Crane
Gantry crane is a special kind of overhead crane. This crane only
has one side support leg, while the other side is mostly supported
by walls of workshop/warehouse.
This semi-gantry crane is mainly applied to lift and convey stuff
outdoors. The A type supporting legs under the main girder runs
directly on the ground track.
1. Truss girder:
The truss girder is welded of angle steel or I type steel with the
advantage of low cost, light weight, better wind resistance, but
because of more welding point, large deflection, small stiffness,
lower reliability, the truss type gantry crane is suitable for the
fields with lower safety requirements and smaller lifting weight.
2. Box girder:
The box structure is welded of steel plate with features of high
security, big stiffness, which is generally applied to the
operation of large tonnage stuff, while the box girder has the
shortcomings of high cost, big self weight, and poor wind
3. Box double girder:
Double girder gantry crane have the features of big lifting
capacity, big span, good overall stability, various types, but the
self-weight is larger than the other single girder gantry crane
with the same lifting capacity.
1. Overload limiter;
2. Polyurethane buffer, long service life and impact resistance;
3. Crane travelling limit switch;
4. Loss pressure protection, fault phase protection;
5. Emergency stop system;
6. Lifting height limiter;
Crane operate mechanism
Lifting mechanism(electric hoist)and travelling mechanism
6, 9, 12, 18, 24, 30
3 phase 50Hz 380V