Operating machine in greenhouse

A big shed operation machine, which relates to a machine frame, ground wheels, a power machine, a transmission case and an operating machine. The power machine and the transmission case are equipped on the machine frame, the ground wheels are equipped at the lower part of the machine frame, the power machine is connected with the ground wheel power through the transmission case. The utility model is characterized in that a fixing plate is fixed on the machine frame, a rotary return plate is equipped on the fixing plate, return positioning inserting pins are equipped between the return plate and the fixing plate, a plurality of fixing holes enabling the return positioning inserting pins to be inserted are arranged on the fixing plate, and an operating machine handle is equipped on the return plate. A device regulates the handle and is connected to the return positioning pin. The machine handle hinges the front terminal to the return plate. A handle elevation regulating plate with several pin apertures is arran