Lifting device, foldable platform mechanism thereof, foldable assemblies and design method

Abstract

The invention discloses a foldable platform mechanism which comprises two foldable assemblies and a plurality of connecting rods. Each foldable assembly comprises a first platform rod, a second platform rod, a lifting fixing rod, a turnover rod and a driving part, the outer end of the second platform rod is overlapped at the inner end of the first platform rod, the tip of the outer end of the second platform rod is hinged onto the first platform rod, the tip of the inner end of the second platform rod is hinged onto a first hinge point of the lifting fixing rod, the upper end of the turnover rod is hinged onto a second hinge point of the lifting fixing rod, the lower end of the turnover rod is hinged onto the tip of the inner end of the first platform rod, the length of the turnover rod can be increased and decreased, and the driving part is arranged on the lifting fixing rod so as to drive the second platform rod to be turned over relative to the lifting fixing rod. The foldable platform mechanism has the advantages that the two platform rods of each foldable assembly can be turned over outside the corresponding lifting fixing rod, so that potential safety hazards due to the fact that existing platform rods extend into a vehicle can be prevented; the foldable platform mechanism is in an overlapping mechanical self-locking design, so that platforms can be prevented from being turned outwardly when equipment fails, and the safety of personnel can be guaranteed.

Description

technical field [0001] The present invention relates to the technical field of lifting equipment, and more particularly relates to a lifting device and its foldable platform mechanism, foldable assembly and design method. Background technique [0002] At present, aiming at the inconvenient problem of getting on and off the vehicle for disabled persons in wheelchairs, wheelchair lifting equipment for vehicles has appeared on the market. This type of lifting equipment usually includes a platform mechanism and a lifting mechanism connected with the platform mechanism. When in use, the platform mechanism can carry a wheelchair with a disabled person, and the lifting mechanism is fixed on the vehicle to drive the platform mechanism to rise or fall, thereby sending the disabled person into the compartment. [0003] The platform mechanism configured in the existing lifting device is usually a foldable mechanism for the storage and transportation of the lifting equipment. However, ...

AI Technical Summary

Problems solved by technology

However, the current foldable platform mechanism is usually designed with an outward-folding structure, which has certain safety hazards: the process of folding the platform is outward-folding, so when the device fails (the gravity sensor fails), The platform is first tilted outward during the folding process, so that the wheelchair will slide off the platform due to inertia, causing personal injury

It can be seen that there is a certain risk in the current platform folding and folding device, which poses a threat to the personal safety of users.

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