Quick and smooth upstairs moped

Abstract

A moped making people rapidly and stably go upstairs comprises a frame, wheels, a cross structure and a power structure. The power structure comprises a motor, a speed reducer, a synchronous belt wheel, a synchronous belt and a main shaft. The main shaft drives the cross structure to rotate. The cross structure comprises a cross bearing fixing piece, bearings and slide rods. Four shaft heads of the cross bearing fixing piece are each provided with a plurality of bearings with flange edges. Bearing assemblies on the four shaft heads form a cross clamping space in a surrounding mode. The slide rods perpendicular to each other are installed in the clamping space, and the two slide rods form a cross shape. The slide rods slide along the outer walls of the bearings. The cross section of each slide rod is square. The center of the cross shape is kept on a straight line all the time. The tail ends of the slide rods are provided with U-shaped sheet metal parts for fixing the wheels. V-shaped flat bottom groove bearings are fixed to the inner sides of the U-shaped sheet metal parts. Guide rails for controlling the distance between the center of the cross shape and a stair are arranged on the frame. The V-shaped flat bottom groove bearings are clamped in slide grooves of the guide rails and can slide along the slide grooves.

Description

technical field [0001] The invention relates to a quick and stable stair climbing assist vehicle. Background technique [0002] Existing upper-stairs trolley structure mainly can be attributed to three classes of wheel set type, crawler type and multi-legged type. [0003] The wheel set type is widely used in the load upstairs, and the characteristic is that each wheel set moves in the way of star wheels (such as figure 1 ): When driving on flat ground, each small wheel rotates around its own axis; when climbing stairs, each small wheel revolves around the central axis together. Compared with other configurations, the wheel-type stair-climbing device is light in weight, flexible in movement, and has better mobility performance in a barrier-free environment. However, when going up and down stairs, the center of gravity of this type of equipment fluctuates greatly, which greatly limits the speed of going upstairs. As a wheelchair, the occupant will feel uncomfortable, and t...

AI Technical Summary

Problems solved by technology

However, the disadvantages of the crawler stair climbing device are: the structure is huge, the efficiency is low, the ground cannot be turned flexibly, and the crawler is easy to damage the edge of the stairs when climbing the stairs.

Although the multi-legged stair climbing device has higher requirements and more complicated operation, its stability is not found in the wheel group stair climbing device.

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