The invention discloses a double-middle-shaft bicycle transmission device, which relates to the technical field of bicycles and comprises a frame and a chain wheel, a front shaft and a rear shaft are mounted on the frame, a transmission chain is mounted on the chain wheel and the rear shaft, middle shafts and an auxiliary shaft are mounted on the frame, the auxiliary shaft is arranged above the middle shafts and is parallel to the middle shafts, a first gear is mounted at one end of each middle shaft, and a second gear is mounted at the other end of each middle shaft. A second gear is installed at the other end of the middle shaft, and a chain wheel is installed between the first gear and the second gear. A first gear and a second gear are installed on the auxiliary shaft respectively, the two gears on the auxiliary shaft are connected with the two gears on the middle shaft through chains respectively, sliding rails are installed on the outer sides of the first gear and the second gear of the middle shaft, sliding rails are installed on the outer sides of the first gear and the second gear of the auxiliary shaft respectively, and idler wheels are installed on the sliding rails. The rolling shaft of the roller and the pin shaft of a certain section of chain are the same shaft, and the roller shaft is rotatably connected with the pedal crank. Through the arrangement of the middle shaft and the auxiliary shaft, the chain forms a closed chain ring, the chain pins are driven by the pedals, and the chain reciprocates up and down and drives the middle shaft to rotate continuously under the clamping of the rollers and the sliding rails, so that continuous and stable power is provided for a bicycle, and the problem that a chain wheel is driven by a traditional middle shaft chain, when the pedals are arranged at the top and the bottom, the chain cannot rotate continuously is solved. The downward force acts on the middle shaft, no torque is generated, the torque is the maximum only when the pedal is located at the horizontal position, and the pedal is the main acting area only when the pedal is close to the horizontal position.
本发明公开了双中轴自行车传动装置,涉及到自行车技术领域,包括车架和牙盘,车架上安装有前轴和后轴,牙盘和后轴上安装有传动链条,车架上安装有中轴和辅助轴,辅助轴在中轴上方,与中轴平行,中轴的一端安装有第一齿轮,中轴的另一端安装有第二齿轮,第一齿轮和第二齿轮之间安装有牙盘。辅助轴上分别安装第一和第二齿轮,辅助轴上两个齿轮分别和中轴上两个齿轮通过链条连接,中轴第一齿轮和第二齿轮外侧均安装有滑轨,辅助轴第一齿轮和第二齿轮外侧均安装有滑轨,滑轨上安装有滚轮,滚轮的滚轴与某一节链条的销轴为同一根轴,滚轮轴与脚蹬曲柄转动连接。通过中轴与辅助轴的设置,将链条形成闭合链圈,通过脚蹬带动链销,在滚轮和滑轨的夹持下,使链条上下往复运动,带动中轴持续转动,为自行车提供持续平稳的动力,解决了传统中轴链传动牙盘,当脚蹬在顶部和底部时,向下的力作用在中轴上,不产生力矩,只有脚蹬处在水平位置时力矩最大,脚蹬只有在接近水平位置时是主要做功区域的问题。
Double-center-axle bicycle transmission device
双中轴自行车传动装置
2024-02-06
Patent
Electronic Resource
Chinese
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |