Electric lifting stair

Abstract

The invention discloses an electric lifting stair which comprises a bottom frame. Four lifting stand column assemblies are arranged on the bottom frame, and every two lifting stand column assemblies located on the same side form one set. A fixing rod is hinged to the top of each set of lifting stand column assemblies, and a connecting rod is hinged to the bottom of each set of lifting stand column assemblies. Each lifting stand column assembly comprises a lifting part and a fixing part, wherein each lifting part and the corresponding fixing part are in sliding fit with each other, and stair plates are fixedly connected between the two corresponding lifting parts of different sets. The electric lifting stair has two using states. When the stair plates are located at the same height, the lifting stand column assemblies ascend and descend synchronously; and when the stair plates are changed into a step layer state with different heights, the heights of the stair plates are fixed. Sliding ways which are used when the using state of at least one lifting stand column assembly is changed are arranged on each fixing rod and the corresponding connecting rod. The electric lifting stair further comprises at least one driven column assembly in the middle of each side. The stair step state and the lifting platform state of the lifting stair can be interchanged, and the overall structure is relatively simple.

Description

technical field [0001] The invention relates to the technical field of personnel and wheelchair lifting equipment, in particular to an electric lifting staircase. Background technique [0002] Personnel and wheelchair lifting equipment is a very mature technology. However, different application scenarios have their own special requirements, such as the steps in front of houses such as independent villas, and the steps in front of public buildings, etc., pedestrians and wheelchairs need to go up and down frequently. In order to meet this demand, in recent years, some patent application documents of electric lift stairs have been disclosed. [0003] But the electric lift stair of prior art still has the following deficiencies: 1, the lifting platform that has and the stair part are two parts that are connected to each other, and when the lifting platform lifts, it drives the stair part to go up and down, so the structure is relatively complicated, the material consumption is ...

AI Technical Summary

Problems solved by technology

[0003] But the electric lift staircase of prior art still has the following deficiencies: 1. Some lift platforms and stairs are two parts connected to each other, and the lift platforms drive Part of the stairs changes, so the structure is relatively complex, the material consumption is high, and the cost is relatively high; some are highly dependent on the original concrete steps of the site, which not only increases the floor space of the stairs, but also relatively increases the cost of materials

2. Some lifting drive mechanisms have a complex structure and relatively high noise; some are exposed and have a relatively high failure rate

3. Some have no flap structure or safety door structure at both ends, and some have two structures, but both the flap structure and the safety door structure need motor control, the structure is more complicated, the wiring is complicated, there are many electric control settings, and the cost is relatively high

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