Simple stepping ladder

Abstract

The invention discloses a simple step ladder for a vehicle having a low chassis and uneasy for people to step up by one step. The device comprises a retraction locking mechanism, a step ladder mechanism and a furling and putting operation mechanism; the upper end of the retraction locking mechanism is fixedly connected with a crossbeam of an automobile; the lower end of the retraction locking mechanism is movably connected with the step ladder mechanism; the step ladder mechanism comprises a connecting rod, a bent angle piece, an upper bent lever, a lower bent lever, a stay bar and a pedal; the connecting rod is positioned on two sides of the pedal ladder; one end of the upper bent lever is hinged with the bent angle piece by a pin roll A; the other end of the upper bent lever is hinged with the middle part of the lower bent lever by a pin roll B; one end of the connecting rod is hinged with the bent angle piece by a pin roll C; the other end of the connecting rod is hinged with one end of the lower bent lever by a pin roll D; two ends of the stay bar are supported in the lower bent lever on two sides of the stay bar respectively; two ends of the pedal are fixedly connected with two sides of the lower bent lever; and one end of the furling and putting operation mechanism is fixedly connected with the retraction locking mechanism. The simple step ladder has a compact structure, reliable operation and convenient operation, does not occupy the space of a carriage and is convenient and safe for people to get on and off.

Description

technical field [0001] The invention relates to a simple step ladder, in particular to a connecting rod type step ladder which does not occupy the space of a carriage, and belongs to the technical field of vehicle accessories. Background technique [0002] The square cabin is a box-body device mounted on a transport vehicle that is used for geological exploration, water conservancy engineering, construction engineering, and military field operations. At present, in some square cabin vehicles or vans with low vehicle chassis, the cabin door or vehicle door is relatively low, but it is not easy for people to step into the vehicle in one step. If a common boarding ladder is installed, it will be too long, and If the boarding ladder is not installed, it will cause inconvenience to the people boarding the car. And the space needed for installing common boarding ladders is also relatively large, which requires a boarding ladder with simple structure, easy to use, and does not req...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the existing vehicles with low chassis do not have a suitable boarding ladder, which leads to difficult boarding, the present invention provides a simple stepping ladder that is simple to install, reliable in operation, convenient in operation and does not occupy the effective space of the carriage.

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