A retractable stair ramp

Abstract

The invention discloses a telescopic stair ramp of a staircase cargo transportation device. A left step guide rail and a right step guide rail parallel to the left step guide rail are arranged on each stair. A base plate is fixedly connected between the two upper ends of the two step guide rails, and a base plate is fixedly connected between the two lower ends of the two step guide rails. Annular limiting frames are arranged on one sides of the base plates. Stepped transmission rods penetrate through the upper limiting frame and the lower limiting frame. A vertically arranged telescopic plate is arranged between the two step guide rails of each step. The upper end of each telescopic plate is connected with horizontal sections of the step guide rails through hinges. Each telescopic plate is connected with the corresponding transmission rod. One side of the topmost step and one side of the bottommost step of each stair are each provided with a control rod, the upper control rod is hinged to the lower control rod through a bracing rod, and the control rods are hinged to the transmission rods through connecting rods. During usage, the steps can be laid into the ramp for cargo transportation by pulling the control rods, the ramp can be folded and packed up when no cargo is transported, and people walking spaces of the stairs are not occupied.

Description

technical field [0001] The invention belongs to a device for transporting goods in stairwells, in particular to a ramp combined with stairs, which can be used for goods with wheels to run in the stairwells. Background technique [0002] Although it is very common for modern buildings to be equipped with elevators and escalators, there are still many low-rise buildings that lack relevant automatic loading facilities, which makes it very troublesome for residents to carry heavy objects in their daily lives, such as luggage and other heavy objects. Therefore, bicycles and other wheeled means of transport can only rely on manpower to carry them up and down the stairs, which not only consumes physical strength but also lacks efficiency. Therefore, the problem of heavy object transportation in low- and middle-rise residential buildings needs to be solved urgently. [0003] At present, most of the existing devices for transporting goods in stairwells use various transport trolleys ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems existing in the existing stair ramps, and to propose a retractable stair ramp. When in use, the steps of the stairs are laid as a ramp for cargo transportation. When idle, it can be retracted and folded without occupying the stairs. The use of space, suitable for residents with limited space

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