Single-girder underrunning manual cranes (underhung overhead-traveling hand crane) with a carrying capacity of 0.5 to 20.0 tons are designed for lifting and moving piece loads in workshops, warehouses, installation sites and other industrial premises. They are performed on conditions where lifting and moving cargo are not often repetitive operations and do not require fast and rhythmic performance of lifting and transporting operations.
overhead crane consists of a launcher boom from 3 to 6 meters, two trolleys, each of which has four freely mounted on the axles wheels and a safety catching device. In overhead cranes, the use of electric hoists is allowed depending on the application of the launcher boom number.
Single-girder underrunning manual cranes in explosion-proof execution (VBI).
Also, single-girder underrunning manual cranes (underhung overhead-traveling manual cranes) with carrying capacity of 0.5-20.0 tons are manufactured in explosion-proof design (VBI) for operation in areas of high explosivity B-1, B-Ia, B-Ib, B-Ig, B-II, B-IIa classes that contain gases from groups I, IIA, IIB, IIC with temperature classes T1-T5.
It differs from an ordinary crane in the design, all surfaces, in the friction of which sparks may appear, are made of a material that prevents their appearance.
The metal structure comes with a factor of safety of 2 against rupture or is made of steel 09G2S.The wheels which move the carts and the crane are made of explosion-proof materials and have coatings that prevent the appearance of a spark.
Dimensional outlines of the single-girder underrunning manual cranes