SU151452A1 - Telescopic mast for lifts - Google Patents

Description

Telescopic masts for lifts are known, consisting of separate sections, each of which is made of rigidly fastened transverse beams of vertical profiled racks of JH tracks.

A distinctive feature of the described telescopic mast is that the lateral lower edges of the extendable section are made vertical slots with curvilinear end sections that end in dead ends, as well as reverse curvilinear sections.

The fingers mounted on the fixed section interact with the movable section at the locations of the slits. The telescopic mast of this design provides for the mounting of its sections into the working position without carrying out climbing works. In addition, in order to align the section guide tracks at the end of a lift into one line, the lower dead ends of the vertical slits are equipped with counterbalanced arrows, articulated between each other by a hinge-lever system controlled by means of levers and cables.

FIG. 1 shows schematically the described telescopic mast with the movable (inner) section lowered; in fig. 2 - the same, with the mobile section extended upwards; in fig. 3 - switch mechanism.

The mast consists of outer fixed and inner sliding sections U and 2, made of vertical profiled legs 3 tl 4, as well as channels 5 and 5, which are also LL I5I452

governing (tracks) for the cargo platform of the lift (not shown). In the lower walls of the movable section there are vertical slots 7 and 8, the lower curved parts of which end in dead ends. In addition, these portions of the vertical slots are connected by means of arrows P and 10 with the reverse curvilinear portions 11 and 12 of the slots. At the locations of the slots of the basement on the section, it interacts with the retractable fingers 13 and 14. The arrows are swiveled and equipped with counterweights 15 and 16. The arrows are pairwise joined together by the rocking chairs 17, 18 and the legs 19, 20, 21 mounted on the movable section. Thus, in the loops 22 and 23 tons of gi 20, with their ends, rocking chair 24 enters, interacting with two shoulders levers 25 and 26 mounted on sections / and controlled by means of cables 27 and 28.

The raising and lowering of the movable section is carried out by means of a cable-block system (not shown in the drawing).

When the inner section is raised, the latter slides along the fingers of the fixed section and, as it advances, shifts relative to the fixed section to the right. The final alignment of the channels 5 and in (tracks) is performed with a certain lowering of the movable section relative to the fixed one with the corresponding switching of the arrows, which ensures that the fingers enter the reverse curvilinear sections of the slits.

Subject invention

Claims (2)

1, a telescopic mast for lifts, consisting of sliding and fixed sections, made in the form of vertical profiled struts rigidly fastened to each other and tracks, equipped with a cable-block control mechanism, characterized in that, in order to mount sections into working position without carrying out climbing works, on the side lower edges of the movable section there are vertical slots with curvilinear end sections, ending with tunics and reverse curvilinear sections interacting with yuschimi fingers is mounted on the fixed section. 2. The telescopic mast according to claim 1, characterized in that, in order to align the section guide tracks in a single line at the end of the lift, the lower dead ends of the vertical slots of the movable section are equipped with counter-reversible arrows, interconnected by a hinge-lever system, controlled from the ground with cables and levers mounted on a fixed section. Si -7fl I 1