The radius of the crankset should be increased, the radius of the flywheel should be reduced, and the radius of the rear wheel should be increased. This is how today’s geared bicycles are designed. The chain drive is composed of main and driven sprockets mounted on parallel axes and an annular chain wound around the sprocket. See Figure 1. The chain is used as the intermediate flexible part and relies on the meshing of the chain and sprocket teeth. Conveys movement and power.
The main disadvantages of chain transmission are: it can only be used for transmission between two parallel shafts; it is high cost, easy to wear, easy to stretch, and has poor transmission stability; it will generate additional dynamic loads, vibrations, impacts and noises during operation, so it is not suitable for use at rapid speeds. In reverse transmission.
Extended information:
https://www.bulleadchain.com/leaf-chain-agricultural-s38-product/length is expressed in the number of links. The number of chain links is preferably an even number, so that when the chains are connected into a ring, the outer link plate is connected to the inner link plate, and the joints can be locked with spring clips or cotter pins. If the number of chain links is an odd number, transition links must be used. Transition links also bear additional bending loads when the chain is under tension and should generally be avoided.
The toothed chain is composed of many stamped toothed chain plates connected by hinges. In order to prevent the chain from falling off during meshing, the chain should have guide plates (divided into inner guide type and outer guide type). The two sides of the toothed chain plate are straight edges, and the sides of the chain plate mesh with the sprocket tooth profile during operation.
The hinge can be made into a sliding pair or a rolling pair. The roller type can reduce friction and wear, and the effect is better than the bearing type. Compared with roller chains, toothed chains operate smoothly, have low noise, and have high ability to withstand impact loads.
Post time: Jan-26-2024