Portal lift

Portal lift, serves for the assembly of vertically installed mechanisms and assemblies with a large mass, as well as the installation of presses, looks like a device P – figurative type, consisting of one span. It rests on two vertical pillars, resembling the lower limbs of a person. The “legs” of this welded-type mechanism, made of four large-sized shingles of metal, are reinforced with a steel grille. It’s used to bind them.   fastening connection on bolts of a two-cut type, reinforced by linings and “caring stones”.

Vertical sections of the “legs” of lifts of this type are selected so that the linear values of heights are multiples of the number “5”. Such proportions  are well correlated with the linear values of the mast lattice sections of the sample. Extreme assembly sections are made with a length of 7.5 m, and intermediate – 10 m. For vertical pillars of the base of portal-type lifts, inventory masts can still be used.  lattice sections and additional components of the assembly, united in the upper plane by rigs of different length, cross-section and rigidity. In the lower plane, these racks rest on a shoe base.

Combination of such racks with shoes occurs with use n  axial products of horizontal location, which creates the possibility of axial rotation of the portal. Upper knee  vertical rack with the help of an axis provides the articulation of the rigel with portal racks based on a sheet-type suspension or hinge spherical connection. Rigel elements are equipped with axial components to support blocks of polyspastes of upper action and intermediate blocks for the removal of cargo. In a vertical position, a portal lift equipped with 2 cargo-type polypasts,  It is held on cables attached to the anchor elements. When installing and operating this device, sleepers are laid under the support shoe or a frame is erected, which provides a uniform translation of loading forces to the installation site of the product.

Portal lift with 4 racks is 2  two-stage lift, paired  between each other and the upper bounds of the flexible type, with a common traverse –  cargo balancer. It is used for the installation of presses weighing more than 300 tons.  products with large masses.

Such a lifting mechanism includes the following components and details:

Lifting equipment is carried out by cargo polypasts through a traverse – a balancer, which consists of 3 beams, 2 – at the top and 1 crossbar – at the bottom.