Taicang Yihai Metal Introduction: What are the characteristics of bicycles with pulley transmission system?

Application characteristics of belt pulley driven bicycle

Traditional bicycles generally adopt metal chain transmission structure, which is prone to abnormal sound, oil pollution, rust and elongation, frequent maintenance and many other pain points when used for a long time. With the continuous maturity of belt transmission technology, the transmission system consisting of polyurethane synchronous belt and precision aluminum alloy pulley has been widely used in commuter cars, electric-assisted bicycles, retro bicycles, exercise bikes and gravel cars. The whole vehicle has obvious advantages in riding experience, daily maintenance, service life, appearance texture and environmental adaptation, and there are also corresponding characteristics. The overall characteristics are divided into two parts: core advantages and objective attributes.

First, the core use advantages and characteristics

1. The riding is quiet and smooth, and the pedaling feels soft and comfortable.

The belt relies on flexible meshing to transmit power, and there is no hard impact friction between chain pins and chain pieces, and there is almost no metal rattling noise during riding, especially when riding at high speed and climbing. The belt itself has a slight cushioning effect, which can absorb the transmission vibration caused by road bumps, and the force transmission is linear and soft, without the problems of chain jamming and frustration. Whether it is commuting in the city or riding for a long time, the riding comfort is greatly improved, and it is also the mainstream transmission scheme for indoor fitness bicycles.

2, clean and oil-free, daily maintenance-free care

The chain must be filled with lubricating oil regularly, and the oil can easily absorb dust and sediment to form sludge, which will not only dirty the trouser legs and the paint surface of the frame, but also aggravate the corrosion in rainy days. The whole belt drive system does not need any lubricating oil, and can be self-cleaned by rain in rainy days; It won't rust, and the chain won't be stretched and loosened. After loading and using, it doesn't need cleaning, oiling, chain cutting and tightening, rust removal and maintenance for a long time, which greatly reduces the daily maintenance cost of ordinary users and is more worry-free and clean after long-term use.

3, the service life is longer and the working condition stability is stronger.

High-quality synchronous belt with hard anodized pulley, the normal commuting service life can reach 3 ~ 5 times that of ordinary steel chain. The chain will gradually wear and stretch under repeated trampling, resulting in tooth jumping, chain dropping and transmission efficiency decline; The belt shape variable is very small, the attenuation range of long-term riding transmission efficiency is very low, the transmission performance is more stable in heavy-duty climbing and high-frequency start-stop scenes, and the after-sales failure rate of the whole vehicle is lower.

4. Excellent transmission efficiency and lower power loss.

The pulley with optimized tooth profile has a high degree of fit with the synchronous belt, which is tightly meshed and not easy to slip, and the transmission efficiency is stable above 95% under normal working conditions. The power output by pedaling can be efficiently transmitted to the rear wheels, and the force response is direct, and pedaling is labor-saving. The riding speed is better under the same pedaling intensity. For electric bicycles, the lower power loss can also optimize the vehicle endurance performance.

5. Excellent weather resistance and good adaptability to complex road conditions.

The pulley adopts aluminum alloy forging and hard oxidation treatment, which is resistant to sand and gravel collision, rain erosion and coastal salt spray corrosion; Polyurethane belt is resistant to high and low temperature, and can be used in rainy and snowy weather, humid environment and low temperature environment in winter. In the face of urban asphalt roads, muddy paths, coastal wet areas and dusty factory areas, roads can run stably, and it is not easy to rust and get stuck.

6. The vehicle's face value is simple and beautiful, which is suitable for diversified vehicle design.

After the complex structure of chain, chain guard and transmission is cancelled, the shape of the transmission area of the car body is more concise and neat, which fits the design style of retro bicycles, minimalist commuter cars and light luxury scooters. The color matching of the belt can be flexibly customized, which can be matched with the painting of the whole vehicle to improve the overall exquisiteness of the vehicle, and is also an important configuration for upgrading the product grade of high-end bicycles.

Second, the inherent objective characteristics of belt-driven bicycles

1. The threshold for maintenance and replacement is higher.

When the chain is broken and worn, it can be quickly replaced and repaired by using the chain cutter on site; The belt is an integrated closed-loop structure. Once it is torn, aged and damaged, it needs to dismantle the frame tail hook or the five-way structure to complete the disassembly and replacement. Ordinary cyclists cannot repair it by themselves and need to hand it over to the dealership for handling.

2. The ultimate bearing capacity of heavy load is weaker than that of high-strength metal chain.

Heavy-duty trucks and professional heavy off-road mountain bikes have large instantaneous impact load, and the metal chain has stronger impact and overload resistance; The belt is more suitable for urban commuting, daily transportation, light off-road and electric power-assisted conventional load scenarios, and is not suitable for high-intensity extreme off-road and heavy-duty freight conditions.

3. The vehicle frame has exclusive matching requirements.

The belt can't be disassembled and opened freely like a chain. The bicycle frame tail hook and rear lower fork with belt drive need to be reserved with special disassembly structure. The ordinary chain frame can't be directly modified with belt drive, and the corresponding structure design needs to be matched in the vehicle production stage.

4. It is forbidden to cut the belt with hard objects and scrape with sharp objects.

The surface of the belt is made of polyurethane. Long-term rubbing of hard objects, gravel and sharp objects will damage the surface of the belt, thus shortening its service life. During riding, it is necessary to avoid sharp objects from continuously rubbing the belt.

Third, the additional use characteristics of the whole vehicle (especially for electric power-assisted vehicles)

The electric bicycle equipped with belt drive has low transmission noise, which will not cover up the running sound of the motor, and the running quietness of the whole vehicle is higher; Maintenance-free features are suitable for sharing motorcycles, park bicycles and other large-scale vehicles, which greatly reduces the operation and maintenance costs of large-scale vehicles, and is the preferred transmission form of commercial two-wheeled transportation equipment.

summary

On the whole, pulley-driven bicycles are quiet, clean, maintenance-free, durable, good riding experience and simple appearance, which perfectly match the riding needs of mainstream people such as commuting, leisure riding, electric-assisted travel and indoor sports and fitness. As long as it is reasonably selected according to the use scene and matched with high-precision pulley components, it can bring users a riding experience far superior to the traditional chain.