SU1530556A1 - Telescoping mast for elevator - Google Patents

Abstract

The invention relates to a lifting and transport machinery, in particular to telescopic construction lifts. The goal is to improve the operating conditions by ensuring the smooth folding of the mast sections. The lift comprises a lifting platform, telescopic mast sections equipped with a locking mechanism 6. The latter is a two-arm lever, one arm of which is associated with a spring-loaded stem, the other can interact with the roller 10 mounted on the lower section. The elevator also contains a mechanism for extending sections 5. When the platform is raised due to the difference in weights, the sections of the mast alternate, starting from the upper section. In the final position, each section is fixed by a latch 6. When the platform is lowered, the sections are alternately lowered, starting from the bottom, while the clamps 6 provide this alternation regardless of external impacts on the mast due to the fact that each upper section is unlocked bottom section. 3 il.

Description

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The invention relates to a lifting and transport machinery, in particular to mast lifts, and can be used in construction during installation, finishing and repair work.

The aim of the invention is to improve the operating conditions by ensuring the smoothness of the lowering of the cargo platform.

FIG. 1 shows the mast, extended position, general view; in fig. 2 — node I in FIG. 1 (extended position of the mast); in fig. 3 - the same folded mast position.

The telescopic elevator contains root 1, intermediate 2 and 3, and upper 4 pull-out sections, mechanism 5 alternate pull-out of sections. In the upper part of each intermediate section 2 and 3, a mechanism 6 for fixing the position of the section is installed, made in the form of rods 8 and two shoulders pivotal arms 9 spring-loaded 7, and stops 2 interact with the two shoulders 9 during the folding of the mast made in the form of a roller. To eliminate the possibility of sections falling when the rope is broken, catchers (not shown) are installed on each intermediate sliding section.

The lift works as follows.

When the mast extends, section 4 first extends, and after full extension, section 3. With this double-arm lever 9, mounted on section 3, comes off the stop And) section 2, and spring 7, moving the rod 8, engages it in section 4, fixing it relative to section 3.

Similarly, mast extension occurs until sections 3 and 2 are fully extended.

The mast is folded under the weight of the raised sections. In this case, first of all, section 2 is lowered relative to section /. At the moment of complete folding of section 2, the free end of the two shoulders lever 9 interacts with the stop 10 of section 1, the lever 9 rotates, compressing the spring 7, and disengages the brush 8 from engagement with section 3, which moves relative to section 2. Similarly, the sections of the mast fold to the end .

Claims (1)

Invention Formula The telescopic mast of the elevator, containing the root, intermediate retractable and upper load-carrying sections, alternately extending sections and fixing the position of sections, each of which includes a spring-loaded pin placed in the guide housing, and a swinging double arm lever, the lower arm of which is kinematically connected a spring-loaded rod, characterized in that, in order to improve the operating conditions by ensuring the smooth folding of the mast sections, each section is provided with a roller, the contact It extends with the free shoulder of the two shoulders lever of the mechanism for fixing the position of the subsequent sliding section, with the pin of each mechanism of fixation installed in the upper part of the section with the possibility of interaction with the previous section of the mast.