Premično dvigalo ima večji razpon vzmetenja, je ekonomično in vzdržljivo. Opremljen je z vgrajeno potovalno agencijo, ki je varnejša in manjša po velikosti, kar je še posebej koristno za povečanje hoda trnka. Pri premičnem žerjavu SEVENCRANE z dvižno opremo so vse pridobljene jeklene plošče nameščene na podnožje kraka. Računalniški programi, ki so trenutno v uporabi, so pozorni le na enakomerno porazdelitev vzdolžno ukrivljenih jeklenih palic po dnu škatlastih nosilcev. Čeprav so vzdolžne jeklene palice dovolj. Glede na značilnosti analize napetosti dejanskega stanja pa se zaradi koncentracije napetosti na korenu konca konzole vlaknasta mreža na koreninah na obeh koncih postopoma zmanjšuje.

Features of jib crane: First of all, the cantilever crane has a lightweight structure, is easy to operate, is flexible, adaptable, and affordable, which greatly saves input costs, while reducing the labor intensity of workers and improving work efficiency. The jib crane solves the weakness of fixed cranes that are prone to site restrictions and is an ideal equipment for repair and installation.

Cantilever cranes include curved arm cantilever cranes, fixed column cantilever cranes, mobile cantilever cranes, and double-arm cantilever cranes. Although they have different names, they also have common characteristics. For example, it occupies a small area, has high work efficiency, and has relatively high reliability when in use. It is very suitable for short-distance lifting and transportation, has a high frequency of use, and can perform relatively intensive lifting work.