TH176211A - Ladder heavy lifting equipment and methods for lifting heavy objects on stairs. - Google Patents

Abstract

A heavy duty ladder device that allows easy adjustment of rail height in The trolley and main chain block are attached to the rail, that is, there are 50 door panels, including the front door-type structure, as well as the front post 2a, 2b in pairs, can be retracted and the front part 4a. And the structure of the side door The rear post, including the 3a, 3b rear post, is a pair, can be retracted, and the 4b rear post and 5 rails that connect the 4a front end to the 4b rear end and the 8a main chain block. Hang the trolley 7 and the 10 weights attached to the rails 5 so that they can be moved and the platform 11a, 11b where the weights 10 are positioned and the rollers 12a, 12b are installed at the bottom of the platform section. These 11a, 11b and 13a, 13b legs that can be adjusted to perform the 11a, 11b pedestal sections are in horizontal condition, with a 51 height adjuster that can be adjusted to the 3a, 3b rear post height of the structure. Back door Selected Picture Figure 1

Claims (1)

1.Devices for lifting heavy objects on stairs with a door leaf, which include The front door structure, including the front pillar, is a pair that can Retractable can be installed on the stairs or on the floor. And the front side parts connected to these front pillars and the rear door-like structure, including the rear pillars in pairs, can be stretched to be set up. On the floor or stairs And the rear connecting parts that connect to these rear posts and the rails that connect the parts Connect the front side of the said front door structure to the tag: