Electric drum

An electric drum, comprising a drum body, wherein, the drum body is provided with a motor and a dual-gear reduction mechanism connected with the motor in transmission way, and an output end of the dual-gear reduction mechanism is connected with the drum body, wherein the structure of the dual-gear reduction mechanism comprises at least one stage of sun dual-gear, N planetary dual-gear sets and a gear ring;

• the at least one stage of sun dual-gear is coaxially arranged with an output gear shaft of the motor;
• the N planetary dual-gear sets surround the at least one stage of sun dual-gear, and the structure of each planetary dual-gear set is:
• each planetary dual-gear set comprises a planetary pin, on which at least one stage of planetary dual-gears and an output planetary gear are fitted sequentially in an axial direction;
• two ends of the planetary pin are fixedly connected with fixing parts in the drum body;
• the planetary pins of the N planetary dual-gear sets are arranged in parallel;
• wherein, input tooth segments of the N first-stage planetary dual-gears are simultaneously engaged with the output gear shaft in transmission way, and are evenly distributed along a circumference centered on the output gear shaft;
• output tooth segments of the N first-stage planetary dual-gears are simultaneously engaged with an input tooth segment of the first-stage sun dual-gear in transmission way, an output tooth segment of the first-stage sun dual-gear is simultaneously engaged with input tooth segments of the N second-stage planetary dual-gears in transmission way, output tooth segments of the N second-stage planetary dual-gears are simultaneously engaged with an input tooth segment of the second-stage sun dual-gear in transmission way till an output tooth segment of the last-stage sun dual-gear is simultaneously engaged with N output planetary gears in transmission way, the N output planetary gears are simultaneously engaged with the gear ring in transmission way, and the gear ring is connected with the drum body and arranged coaxially with the drum body;
• and wherein N is greater than or equal to 3;
• and
• wherein the planetary pin is fixedly connected with the fixing parts via a cage-type gear box support;
• a space for accommodating the at least one stage of sun dual-gear and the N planetary dual-gear sets is formed inside the cage-type gear box support;
• two ends of the cage-type gear box support are respectively connected with the fixing parts;
• the two ends of the cage-type gear box support are correspondingly provided with assembly holes, for tightly fitting with the planetary pin;
• one or more connecting posts are arranged on the circumferential side of the cage-type gear box support, and a threading channel is formed inside the connecting post.

An electric drum, comprising a drum body, wherein, the drum body is provided with a motor and a dual-gear reduction mechanism connected with the motor in transmission way, and an output end of the dual-gear reduction mechanism is connected with the drum body, wherein the structure of the dual-gear reduction mechanism comprises at least one stage of sun dual-gear, N planetary dual-gear sets and a gear ring;

• the at least one stage of sun dual-gear is coaxially arranged with an output gear shaft of the motor;
• the N planetary dual-gear sets surround the at least one stage of sun dual-gear, and the structure of each planetary dual-gear set is:
• each planetary dual-gear set comprises a planetary pin, on which at least one stage of planetary dual-gears and an output planetary gear are fitted sequentially in an axial direction;
• two ends of the planetary pin are fixedly connected with fixing parts in the drum body;
• the planetary pins of the N planetary dual-gear sets are arranged in parallel;
• wherein, input tooth segments of the N first-stage planetary dual-gears are simultaneously engaged with the output gear shaft in transmission way, and are evenly distributed along a circumference centered on the output gear shaft;
• output tooth segments of the N first-stage planetary dual-gears are simultaneously engaged with an input tooth segment of the first-stage sun dual-gear in transmission way, an output tooth segment of the first-stage sun dual-gear is simultaneously engaged with input tooth segments of the N second-stage planetary dual-gears in transmission way, output tooth segments of the N second-stage planetary dual-gears are simultaneously engaged with an input tooth segment of the second-stage sun dual-gear in transmission way till an output tooth segment of the last-stage sun dual-gear is simultaneously engaged with N output planetary gears in transmission way, the N output planetary gears are simultaneously engaged with the gear ring in transmission way, and the gear ring is connected with the drum body and arranged coaxially with the drum body;
• and wherein N is greater than or equal to 3;
• and
• wherein one or more threading tubes are arranged inside the drum body, and two ends of each threading tube are respectively connected with the fixing parts.