Barrel wall type sheave mechanism for three dimensional vertical axes rotation transmission

Abstract

The invention relates to a three-dimensional vertical axis rotating driving barrel wall type grooved pulley mechanism that includes grooved component and grooved wheel. The stir groove component of the grooved wheel and the located half arc flute are distributed on the circle of the barrel wall. The diving shaft of the stir groove component, the located half arc and the rotating rocker are fixed together, shifting shaft and the rotating rocker are fixed together. Shaft sleeve is actively installed on the shifting shaft. The rotating axis lines of the stir groove component, the shifting shaft and the grooved wheel are joined at one point in the three-dimensional space. The invention is simple structure, good technical, easy to be machined and reduces the entire volume of the transformer tapping switch.

Description

technical field [0001] The invention relates to a mechanically driven sheave mechanism, specifically a sheave that converts the uniform continuous rotation of the driving shaft in three-dimensional space into the periodic intermittent motion of the driven shaft rotating perpendicularly to the three-dimensional space The mechanism is mainly used in the hierarchical shifting structure of the transformer tap changer. Background technique [0002] Generally, the grooved wheel mechanism is that the slotted part (driving wheel) and the grooved wheel (driven wheel) rotate in the same plane or in parallel planes, that is, the planes where the rotation axes of the two are located are the same plane and the axes are parallel, and the above basic types It can be divided into two types: external and internal: figure 1 Shown is an external sheave mechanism, where O 1 is the shaft center of the slotted part 1, A is the shift fork, and O 2 is the shaft center of the sheave 2, and the sl...

AI Technical Summary

Problems solved by technology

This kind of sheave mechanism can transmit the periodical intermittent movement of the rotating shaft in the vertical direction of three-dimensional space, but the bowl-shaped (ie spherical) sheave mechanism has two shortcomings: one is because the sheave is a bowl-shaped spherical surface, and the rotation on it The machining processes such as slots and positioning arcs must be completed on the bowl-shaped spherical surface, so the manufacturability is relatively difficult; secondly, the internal space of the bowl-shaped spherical sheave is relatively limited, that is, it is relatively narrow, and it is difficult to apply it to the structure of the transformer tap changer. It is inconvenient to reduce the volume of the switch as a whole

In this way, there are many motion transmission links, the switch structure is relatively complicated, the mechanical efficiency is low, and the cost is also high, so the reliability is reduced, and it is more inconvenient to maintain.

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