Connection system of a transmission rod for solar trackers

A connection system for enabling a first rotation module of a first row of solar panels to control a movement of a second row of solar panels, the connection system comprising:

• a transmission rod having a first end and a second end, the first end having a first hollow end portion, the second end having a second hollow end portion;
• a first universal joint comprising:
• a first connection end having a circular cross section, the first connection end being adapted to receive a first cylindrical connection output of a first rotation module coupled to a first rotation shaft of a solar tracker system;
• and
• a first tubular connection end having a square cross section, the first tubular connection end being adapted to fit into and engage with the first hollow end portion of the first end of the transmission rod, wherein the first tubular connection end is adapted to be connected to the first end of the transmission rod and adjustable by application of pressure without any fastening device passing through the first tubular connection end or the transmission rod;
• and
• a second universal joint comprising:
• a second connection end having a circular cross section, the second connection end being adapted to receive a second cylindrical connection output of a second rotation module coupled to a second rotation shaft of the solar tracker system;
• and
• a second tubular connection end having a square cross section, the second tubular connection end being adapted to fit into and engage with the second hollow end portion of the second end of the transmission rod, wherein the second tubular connection end is adapted to be connected to the second end of the transmission rod by means of a screw that passes through a set of holes disposed in the second tubular connection end and in the transmission rod.