A two-degree-of-freedom parallel lifting mechanism for a three-dimensional garage

Abstract

The invention discloses a two-degree-of-freedom parallel lifting mechanism for a three-dimensional garage, and relates to the technical field of the three-dimensional garage. The lifting mechanism iscomposed of a fixed platform, a moving platform, a left side motion branch chain and a right side motion branch chain, a first slideway and a second slideway are mounted on the fixed platform, a thirdslideway is mounted on the moving platform, the left side motion branch chain is composed of a left long lift arm, a left short lift arm and a left hydraulic cylinder, the left short lift arm is hinged to the fixed platform, the left long lift arm and the second slideway form a moving pair, the top end of the left long lift arm is hinged to the moving platform, the structure of the right side motion branch chain is the same as the left side motion branch chain, and the difference is that the top of the right long lift arm and the third slideway form the moving pair. By controlling the amountof expansion and contraction of hydraulic levers on the left and right sides, the vertical ascent and pitch of the moving platform relative to the fixed platform can be achieved; the mechanism has stable lifting, flexible posture adjustment, large folding ratio, compact structure and flexible structure adjustment.

Description

technical field [0001] The invention relates to a two-degree-of-freedom parallel lifting mechanism for a three-dimensional garage, which belongs to the technical field of the three-dimensional garage. Background technique [0002] With the continuous increase of the number of cars in our country, the problem of difficult parking has become increasingly prominent in major cities. The emergence of three-dimensional garage technology has effectively alleviated the problem of difficult parking and improved the quality of life of the people. Compared with the traditional parking method, the three-dimensional garage technology can make full use of space resources to park more vehicles, increase the garage capacity, and achieve the purpose of saving resources. However, in recent years, various three-dimensional garage accidents occur frequently, which limits the development of this technology. In the closed three-dimensional garage, the driver only needs to park the vehicle in a ...

AI Technical Summary

Problems solved by technology

In the existing lifting mechanism patents, there are the following problems. 1. In order to obtain a high lifting height, the method of adding components in the longitudinal direction of the mechanism is usually used, such as CN102577749B. Although this method increases the lifting height of the mechanism, But at the same time, it also increases the size of the mechanism at the lowest position and reduces the folding ratio of the mechanism, which is not suitable for application in three-dimensional garages; 2. During the lifting process, the stability of the moving platform of the mechanism is a key issue for safety , in the existing lifting mechanism patents, the scissor mechanism is mostly used as the lifting mechanism. The disadvantage is that the distance between the scissor support points becomes shorter during the lifting process, and the distance between the center of mass of the lifted vehicle and the support point Gradually becomes larger, reducing the stability of the mechanism, such as CN104647338B; 3. In the existing lifting mechanism, the mechanism cannot complete flexible attitude adjustment, generally only a single drive unit is used, and the moving platform can only rotate around the fixed platform. Pitch adjustment in one direction, such as CN105292514B

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