Photovoltaic tracking support and transmission device thereof

A photovoltaic tracking support transmission device, comprising:

• a stand column,
• a main beam,
• a composite chain gear set, and
• a composite chain wheel set,
• wherein the main beam is rotatably supported to the stand column and is configured to support a photovoltaic module,
• wherein the composite chain gear set comprises a plurality of chain gears,
• wherein the composite chain wheel set comprises a plurality of chain wheels,
• wherein each chain gear comprises a plurality of circumferential tooth tips,
• wherein the plurality of chain gears are arranged coaxially with respect to one another and are further arranged such that the tooth tips of each chain gears are staggered with respect to the tooth tips of an adjacent chain gear,
• wherein the plurality of chain wheels are arranged coaxially with respect to one another and provided in a one-to-one correspondence to, and configured to mesh with, the plurality of chain gears at a plurality of meshing points, and
• wherein one of the composite chain gear set and the composite chain wheel set is rotatably disposed on the stand column and the other is affixed to the main beam,
• wherein the staggered arrangement of the tooth tips of each chain gears with respect to the tooth tips of an adjacent chain gear reduces the overall gap present between the plurality of meshing points of the plurality of chain gears and plurality of chain wheels.