What is a Transmission Belt? What is the composition of a belt drive?

Conveyor belt, also known as conveyor belt, is the transmission medium in the conveyor belt system. The transmission belt system is a kind of transmission system, which will include two or more pulleys with transmission belts on them, and the pulleys can rotate the transmission belt without restrictions. One or more of the pulleys will be powered to drive the belt and carry the material on the belt.

The sheaves that are powered to drive will be called drive pulleys, and the rest will be called idlers. There are two types of industrial belts: material handling in factories where materials or objects are conveyed in boxes or pallets, and bulk material handling where large quantities of materials or agricultural products such as grain, salt, coal, ore, sand or overburden are conveyed.

The transmission belt is the power generated by the rotation of the motor or engine of the prime mover, which is transmitted to the mechanical equipment by the belt through the belt wheel, so it is also called the power belt. It is the core connecting component of electromechanical equipment, and it is extremely versatile and versatile.

From giant motors ranging from thousands of kilowatts to micro motors of less than one kilowatt, and even precision machinery such as home appliances, computers, and robots, transmission belts are inseparable. Its biggest feature is that it can be changed freely, far and near transmission, simple structure and easy to replace. Therefore, from the original machinery to modern automatic equipment, there are transmission belts, and the products have undergone many evolutions, and the technology has become more and more mature.

The belt drive is generally composed of a pulley (driving wheel) that is fixed to the driving shaft, a pulley (driven wheel) that is fixed to the driven shaft and a flexible belt that is tightly sleeved on the two wheels.

The working principle of the belt drive.

Belt transmission uses the belt tensioned on at least two wheels as an intermediate flexible part, and relies on the friction (meshing force) generated between the contact between the belt and the pulley to transmit motion and/or power.

Characteristics and applications of belt drives

Features: The belt drive is a flexible transmission, with stable transmission, low noise, and buffer vibration absorption. In the event of overload, the belt will slip on the pulleys and protect other transmission parts from damage.

The belt drive allows a large center distance, simple structure, easy manufacturing, installation and maintenance, and low cost. But due to the sliding between the belt and the pulley, the gear ratio remains strictly unchanged. The transmission efficiency of belt transmission is low, and the life of the belt is generally short, so it is not suitable to work in flammable and explosive occasions.

In general, the power of belt drive transmission is P 100KW, the belt speed is V=5-25M s, the average transmission ratio is 5, and the transmission efficiency is 94%-97%. The belt speed of the synchronous toothed belt is 40-50m s, the transmission ratio I is 10, the transmission power can reach 200kw, and the efficiency is as high as 98%-99%.

A belt drive usually consists of a driving wheel, a driven wheel, and an annular belt tensioned on two wheels. The stresses experienced by the belt drive when working are:

1. Stress caused by tension of tight and loose edges;

2. Stress caused by centrifugal force;

3. The bending stress caused by the bending of the belt on the pulley.

According to the different transmission principles, there are friction belt transmissions that rely on the friction between the belt and the pulley, and there are synchronous belt transmissions in which the teeth on the belt and the pulley mesh each other.

Belt drive classification.

According to different uses, belt drives can be divided into general industrial drive belts, automotive drive belts, agricultural machinery drive belts and household appliances drive belts. According to the different cross-sectional shapes, friction transmission belts are divided into flat belts, V-belts and special belts (ribbed belts, round belts) and so on.

The type of transmission belt is usually selected according to the type, use, use environment and characteristics of various belts of the working machine. If there are a variety of transmission belts to meet the needs of transmission, the optimal solution can be selected according to the compactness of the transmission structure, production costs and operating costs, as well as the best factors in the market.

The differences between chain drive and belt drive are as follows: 1. Different properties: belt drive is made of tensioned (annular belt) belt chain, which is generally a metal chain link or annular object, which is mostly used for mechanical transmission and traction.

2. Different composition: belt transmission consists of one or several belts tightly sleeved on two wheels (called "pulleys"). There are many types of chains, and most chains are composed of chain plates, chain pins, shaft sleeves and other components.

3. Different applications: belt drives are widely used in machinery, such as sewing machines, engines and other mechanical devices. Chains are mostly used for mechanical transmission, traction, mechanical basic parts, etc.

Belt drive is a commonly used transmission method in the mechanical transmission industry, which is mainly composed of belts and wheels. The belt is the key component of the belt drive, and its main role is to transmit power from one shaft to another. Belt transmission generally uses rubber belts, polyurethane belts, polyamide belts and other materials, and the specific selection should be considered and selected according to different work needs, working environment and service life.

Advantages and applications of belt drives.

The main advantages of belt drive are large transmission torque, smooth power transmission, low noise, low cost, simple installation and maintenance. Belt drives are widely used in various fields, such as machinery manufacturing, metallurgy, mining, printing, light industry, food and other industries.

Classification of belt drives.

The classification of belt drive is mainly classified according to the characteristics, structure and use of the belt. According to the classification of characteristics, belt drive is mainly divided into synchronous belt drive and non-synchronous belt drive; According to the classification of structure, belt drive is mainly divided into parallel shaft belt drive, cross shaft belt drive, steering belt drive, etc.; According to the classification of use, belt transmission is mainly divided into transmission of high power, medium and medium power, high speed and low speed transmission, forward and reverse transmission, etc.

Design points for belt drives.

The design of the belt drive mainly includes selection, layout, tensioning and trimming. When selecting the model, it is necessary to select according to the transmission conditions, speed, transmission ratio, load, speed ratio and other factors; When layout, it is necessary to pay attention to the compactness of the transmission design, the convenience of operation and the safety; Tension seepage is an important part of the design of belt drive, reasonable tensioning can make the belt drive run stably, prolong the service life; Trim is another important part of belt transmission, reasonable trim can make the length of the belt meet the needs of power transmission, to achieve a balanced state. At the same time, in order to reduce the occurrence of wear, fatigue, cracking and other phenomena caused by repeated torsion of the belt drive, it is also necessary to pay attention to the installation method of the belt, the maintenance and detection of the belt and other related issues.

The development prospect of belt drive.

Belt drive has become an indispensable part of the field of mechanical transmission, and the continuous development of technology and increasing application demand have laid a solid foundation for the future development of belt drive. In recent years, belt drive has been widely used in energy, environmental protection, energy saving and other fields, and more and more new technologies have been realized in belt drive, such as adaptive belt drive hail wisdom system, intelligent belt drive system, etc., the application of these new technologies will greatly improve the reliability, safety and performance of belt drive.

In short, as an important part of the mechanical transmission industry, belt drive has a wide range of application prospects and development space, and has made great contributions to various industries. In the future, the belt drive technology will continue to improve, give full play to more advantages, and bring greater convenience to people's production and life.

Belt drive is a mechanical leak drive that uses a rubber belt or belt to transfer power from one drive shaft to another. This transmission is particularly suitable for low-speed and medium-power applications such as machine tools, vehicles, agricultural machinery, etc. Its main functions are as follows:

1.Power transmission: Belt transmission can transmit the power of the engine to wheels, machine tools and other equipment, so that it can run normally. It transmits power from one axis to another through the winding, tension and friction of the belt, thus completing the transmission task.

2.Functional separation: Belt drive separates the two shafts, allowing them to operate independently in power and speed.

For example, in a vehicle, the engine transmits power to the air conditioning compressor via a belt drive, allowing it to function properly. At the same time, the air conditioning compressor does not affect the speed and power of the engine.

3.Transmission of torque: The belt drive can transmit different torques by adjusting the tension of the belt to achieve speed regulation and load balancing.

For example, in agricultural machinery, the belt drive can adjust the speed and force of the knife by adjusting the tension of the belt to adapt to different job requirements.

4.Cushioning and eliminating vibration: The belt drive can buffer and eliminate the vibration and impact during the operation of the machine, and reduce the noise and vibration of the machine. This helps to reduce the wear and tear of machine parts and extend the service life of the machine.

In short, belt drives play an important role in transmitting power, separating functions, transmitting torque, cushioning and eliminating vibrations. It is these roles that make belt drives an indispensable and important part of all kinds of machinery and equipment.