Main framework of passenger transfer apparatus

The invention provides a main framework of a passenger transfer apparatus, which comprises a side body.The side body comprises an intermediate inclined portion inclined with respect to the horizontal direction, an upper horizontal portion fixedly connected with the upper side of the intermediate inclined portion and a lower horizontal portion fixedly connected with the lower side of the intermediate inclined portion.The main framework of the passenger transfer apparatus is characterized in that the framework is formed by the respective bending of the upper horizontal portion and the lower horizontal portion with the side parts of the intermediate inclined portion as bending points.A boundary, which is an upper boundary, is arranged between the upper horizontal portion and the intermediateinclined portion. The upper boundary passes through the lower side in the vertical direction of the bending point at the top face of the upper horizontal portion, namely an upper top face bending point.A boundary namely a lower boundary is arranged between the lower horizontal portion and the intermediate inclined portion. The lower boundary passes through the upper side in the vertical directionof the bending point at the bottom face of the lower horizontal portion, namely a lower bottom face bending point.