Self-propelled trolley driven by gravitational potential energy and capable of travelling around splay route

Abstract

The invention relates to a self-propelled trolley driven by gravitational potential energy and capable of travelling around a splay route. The self-propelled trolley comprises a chassis with rear travelling wheels, a driving portion and a steering mechanism, wherein the driving portion and the steering mechanism are mounted on the chassis, the driving portion consists of a weight support, a weight, a drive shaft, a reel, a connecting cord, a transmission gear set and a driving shaft, and the steering mechanism consists of a set of spatial four-bar guide mechanism and a front guide wheel mounted below a tail oscillating bar of the spatial four-bar guide mechanism. In the actual travelling process, the front guide wheel of the trolley is controlled to rotate according to a set direction by adjusting the spatial four-bar guide mechanism so as to drive the trolley to be capable of travelling around the splay route, and various parameters of a crank bar are changed to further enable travelling distance and travelling track of the trolley to be changed. The self-propelled trolley has the advantages of simple and reasonable structure, convenience in operation and control, high efficiency, accurate travelling track, good stability and the like.

Description

technical field [0001] The invention belongs to the technical field of walking tools for experiments or toys, and relates to a self-propelled trolley that converts gravitational potential energy into kinetic energy to drive the trolley to walk around a figure-eight route. Background technique [0002] The self-propelled car is also called a carbon-free car. It is a kind of energy that does not need to consume fuel and battery storage. It only relies on the mechanical potential energy generated during the falling of the heavy hammer to generate power to drive the car forward. topic. Its basic structure can be found in figure 1 . In the figure, the connecting rope 2 hanging on the weight 3 applies gravity to the driving shaft 6 through the reel 1, and the displacement generated by the falling of the weight 3 is converted into the driving shaft by using the connecting rope through the guide wheel on the shaft The driving shaft 6 and the driving shaft 4 drive the rear wheel (...

AI Technical Summary

Problems solved by technology

At present, the main problems of the self-propelled trolleys known in the art are: the transmission mechanism of the trolley mainly adopts the cam-link scheme, which affects the traveling distance of the trolley due to excessive energy consumption and low efficiency; It is difficult to change the transmission ratio, which makes it difficult to change the trolley during the trajectory adjustment process. The trajectory change parameters cannot provide direct modification guidance for the fine-tuning parameters of the trolley, etc.

In addition, at present, the transmission ratio of the transmission mechanism of the carbon-free trolley is mainly estimated by experience and the guidance mechanism, which cannot be obtained more accurately, and because most of its theoretical calculations are calculated under ideal conditions, it is easy to ignore the influence of external conditions on it

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