Wheel structure for uneven ground

Abstract

The invention relates to a wheel structure for an uneven ground, which comprises a wheel disk, three layers of one-piece gears, racks and grounding legs. According to the wheel structure for the uneven ground, the defect that the length of a spoke rod in the prior art can not be changed is overcome. The wheel structure for the uneven ground can be used on an even road or a road with a slope and especially can be used for realizing the operation of going up or down steps or stairs easily under the traction of people. The labor intensity of the people is relieved.

Description

technical field [0001] The invention relates to the field of wheels, in particular to a wheel structure for uneven ground. Background technique [0002] At present, most of the wheel structures of various hand-pulled handcarts are ordinary round wheels. Although the trolleys equipped with round ordinary wheel structures can adapt to flat or slope road conditions, in special road conditions, such as encountering steps or Stairs, when the car needs to jump up and down, it cannot be used normally, and the car needs to be abandoned by people to carry the objects on the car. [0003] In order to solve the above-mentioned technical problems, the current prior art mainly adopts two kinds of special wheel structures, one is crawler type, and the other is spoke wheel type. The tracked wheel structure has a very small contact surface with the stairs when going up and down the stairs, and only touches the edge of the stairs. Therefore, it is not stable during operation, and the rise a...

AI Technical Summary

Problems solved by technology

The tracked wheel structure has a very small contact surface with the stairs when going up and down the stairs, and only touches the edge of the stairs. Therefore, it is not stable during operation, and the rise angle of the existing residential stairs is relatively large, generally 28°-34° °, so its safety performance is not ideal enough

The spoked wheel structure is mainly composed of shaft seats, radial support tubes and rolling wheels. Generally, there are multiple radial support tubes. This spoke wheel structure solves the problem of small contact surface with stairs. When going up and down stairs, The wheels are in contact with the stair plane, so its safety performance is better than that of the crawler type, but the actual use effect is not ideal enough. The main problem it exists is: the length of the spoke rod cannot be adjusted

When the weight of the load is between the supporting points of the two spoke rods, it is suitable for going up stairs, but not suitable for going down stairs. When the weight of the load is outside the supporting points of the two spoke rods, it is suitable for going down stairs. But it is not suitable for going up the stairs. Therefore, the existing spoke wheel type wheel structure is neither convenient nor labor-saving in the process of going up and down the stairs because it cannot adapt to stairs of different heights; The length cannot be adjusted. Even when the existing spoke wheel structure travels between stairs with the same step height, the center of gravity will cause large bumps due to the up and down movement, so that the trolley cannot run stably

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