Cylindrical transmission

A cylindrical transmission, comprising a housing, an input shaft, and an output shaft, wherein, the housing comprises several circular discs with outside lips provided thereon, the input shaft and the output shaft are provided on center lines of the several circular discs, several driving gears are provided on the input shaft, a rotary disc is provided on the output shaft, and the rotary disc is provided with internal teeth of rotary disc;

• several gear shafts are provided between two adjacent circular discs, the gear shafts are provided on the periphery of the driving gears between the two adjacent circular discs, and several gears are provided on each of the gear shaft;
• the gears are adjacent to the rotary disc, and one of the several gears is disengaged from or engaged with the internal teeth of rotary disc;
• all the circular discs are connected with each other via the outside lips,
• wherein the several circular discs include a H-disc, a fixed disc, and a rear end cover of transmission;
• the fixed disc has a fixed disc side opening;
• the gear shafts include a transmission gear shaft, and the gear shafts include a transmission gear upper wheel and a transmission gear bottom wheel;
• the several driving gears are fixed to the input shaft between the H-disc and the fixed disc, and an internal flat surface of fixed disc is arranged below the internal teeth of rotary disc;
• one side of the H-disc is connected to the fixed disc and the rear end cover of transmission;
• a bearing and an oil seal are provided at the center of the H-disc;
• two bearings are provided at the center of the fixed disc;
• one end of the input shaft extends into the bearings at the center of the fixed disc, and the other end of the input shaft extends through the bearing and oil seal at the enter of an H-disc;
• several corresponding bearing sockets are provided on the internal flat surface of H-disc and the internal flat surface of fixed disc and bearings are provided in the bearing sockets, both ends of the transmission gear shaft are inserted into the bearings in the bearing sockets respectively;
• the transmission gear upper wheel is fixed to the transmission gear shaft, and the transmission gear bottom wheel is cup jointed with the transmission gear shaft via splines;
• the several driving gears are engaged with the transmission gear upper wheels respectively;
• a compression spring is provided below the transmission bottom wheel;
• the transmission gear bottom wheel is adjacent to the internal teeth of rotary disc, with clearance between them;
• the transmission gear bottom wheel is disengaged from or engaged with the internal teeth of rotary disc;
• the rear end cover of transmission is arranged at the outer side of the rotary disc,
• wherein several self-retaining electromagnets, electromagnet bases, and electromagnet connectors are provided on the internal flat surface of the H-disc;
• the self-retaining electromagnets are fixed to the electromagnet bases;
• an electromagnet push-pull rod is provided in each self-retaining electromagnets the electromagnet push-pull rod extends through an oil seal on the electromagnet base and is connected to the electromagnet connector;
• a shaft hole and an ejector pin are provided in the transmission gear shaft;
• a copper washer, a circlip for shaft, and steel balls are provided on the top end of the ejector pin and the lower end of the ejector pin extends into the shaft hole;
• a bayonet is provided on the bottom side of the electromagnet connector, and the bayonet is inserted at the bottom side of the copper washer;
• a cross flat hole is provided in the transmission sear shaft;
• and the transmission gear bottom wheel, transmission gear shaft and ejector pin are connected together in the cross flat hole by dovetail screws.