Product Description

Rubber wrapping drum is an important component and part of belt conveying system. The rubber wrapping of the drum can effectively improve the operation condition of the conveying system, protect the metal drum from wear, prevent the slip of the conveyor belt, and make the drum run synchronously with the belt, so as to ensure the efficient and large volume operation of the belt. The rubber coating of the drum can also effectively prevent the sliding friction between the drum and the belt, reduce the material bonding on the drum surface, and reduce the deviation and wear of the belt. Widely used in: Iron and steel, metallurgy, coal, cement, power generation, chemical fertilizer, CZPT depot, port and other industries.
Coating material
Natural rubber, nitrile rubber, neoprene, EPDM, polyurethane, etc. can be used.
Technology
There are 2 types of rubber wrapping roller technology. The traditional rubber wrapping technology, such as hot vulcanization technology, mainly vulcanizes its rubber with the roller through the vulcanization tank to ensure the bonding strength between the rubber wrapping panel and the roller. The second is cold vulcanization technology, which uses a special cold vulcanization method to directly CZPT its roller with the rubber wrapping panel, which can be used for on-site rubber wrapping, underground rubber wrapping, etc, Its technology is more advanced, but also greatly reduces the labor cost.
Manufacturing process: generally, in terms of the main shaft of the drum, it can be divided into the following 2 types according to the load: (1) the mandrel only bears bending moment, such as the shaft of the drum group; (2) The rotating shaft bears bending moment and torque at the same time, such as the shaft of the transmission drum group; The material of the shaft is generally rolled or forged carbon steel or alloy steel. The usual material is medium carbon steel. No. 45 steel is the most commonly used. For the shaft with large stress and limited size, and some shafts with special requirements, alloy steel can be used. The material is 40 chromium. According to the needs, the shaft generally needs heat treatment or surface strengthening treatment, In order to improve its mechanical properties and wear resistance, the difference of elastic modulus between alloy steel and carbon steel is very small at general temperature, so the use of alloy steel can not improve the stiffness of the shaft; The shaft material is generally subject to quenching and tempering treatment. For the transmission drum group, when the shaft strength index does not meet the requirements, it can also be combined and quenched and tempered, and checked according to the allowable stress of symmetrical circular bending; The technical requirements for shell design are: (1) when the shell is curled, it must follow the rolling direction of the steel plate; (2) The misalignment at the joint shall not be greater than 1mm; (3) Ultrasonic or X-ray flaw detection must be carried out for the longitudinal weld after the drum is coated with glue: ultrasonic flaw detection shall be carried out for 10%, and the weld shall reach grade II in the standard; Radiographic flaw detection starts from 1 end and detects 20% of the total length. The weld reaches grade II of the national standard. If the flaw detection length is doubled and still unqualified, full-length flaw detection shall be carried out until it meets the requirements; (4) The roundness tolerance of the rolled shell shall not exceed 0.5; (5) Material: Q235 section steel with yield strength of 235 n / m2; For medium-sized drum group and light-duty drum group, when the outer diameter of the hub is greater than 220mm, cast steel shall be used. For light-duty drum group, when the outer diameter of the hub is less than 220mm, hot-rolled round steel shall be used, which shall meet the national standard

What Is a Pulley?

The pulley is a wheel mounted on a shaft or axle. Its purpose is to support the movement of a cable that is taut. This cable transfers power to a shaft. However, there are certain safety precautions that you should follow when using a pulley. Read on to learn more! Listed below are common uses and their main parts. Listed below are some of the benefits of using a pulley.

Common uses of a pulley

A pulley is a common mechanical device used to increase the force needed to lift a heavy object. Most commonly, these devices are used in construction equipment. These machines use high-10sion ropes to transfer heavy objects from 1 floor to another. Other common uses of a pulley include buckets and flagpoles. These devices are extremely useful in a wide range of applications. To learn more about the common uses of pulleys, keep reading.
A pulley is a wheel with grooves for holding rope. Its purpose is to change the direction and point at which a pulling force acts. It is usually used in sets to reduce the amount of force needed to lift a load, but the work involved is similar. Pulleys are also used in rock climbing devices. For many applications, a pulley is a vital part of construction.
The most common use of a pulley involves hoisting and lowering a flag. Other examples include clotheslines, bird feeders, and escalators. Pulleys are also commonly used on oil derricks. Many other common applications include hoisting and lowering garage doors. Pulley systems are also used in engines and cranes. For more information, check out our interactive pulley diagram!
Pulleys can also be used to lower total work required for a task. In many cases, a pulley will consist of 2 parts: the pulley hub and the shaft pulley. The hub clamps the shaft pulley, while the pulley itself is connected to the motor or other device. If you’re looking for a pulley, it’s important to learn how it works.
The most common uses for a pulley involve lifting heavy objects, and the mechanism used to lift them is known as a pulley. A pulley is an industrial device that uses 2 wheels to reduce the force needed to lift a weight. The pulley reduces this force by half by allowing the user to pull on the rope 4 times as far. The pulley also allows for a smaller lifting distance.

Main parts of a pulley

A pulley consists of the main element of a system. This is typically a cable, rope, belt, or chain. There are 2 basic types of pulleys – a Driver Pulley and a Follower Pulley. Pulleys are available in small and large sizes. The periphery part of the pulley is called the Face, and the protruding middle part is called the Crown. A pulley’s face can be round, rectangular, or even “V” shaped.
The first pulley was created by the Greek mathematician Archimedes in the third century BCE. These simple machines are made of a rope, an axle, and a wheel. The pulley’s end is attached to a person, object, or motor. These machines can be used in various tasks to lift heavy objects. The pulley is a great mechanical advantage for any lifter.
The ideal mechanical advantage of a pulley is defined by the number of rope segments that pull an object. The higher the number of loops on the rope, the higher the mechanical advantage. The greater the mechanical advantage, the less force is required to move the object. Likewise, the greater the distance the rope traverses, the higher the mechanical advantage of a pulley. There are several different types of pulley, depending on their combination of rope, wheel, and rope.
The basic components of a pulley are the face and hub, and the rope is threaded into the center of the pulley. The pulley is usually made of a rope and can be used to lift heavy weights. It can also be used to apply great force in any direction. Step pulleys have multiple faces, which are fixed in sequence. They can also increase the speed of the driven pulley.
A pulley is a simple machine consisting of a wheel, rope, or chain. These parts are crucial for making moving and lifting easier. Because they change the direction and magnitude of force, they can be a useful tool. Some pulleys even change direction. You can learn more about the pulley by downloading this resource today. The resources are designed to support the new 9-1 GCSEs in Design & Technology and Engineering.

Mechanical advantage

Pulleys have been used to move heavy objects for centuries. When 2 rope sections are used, the weight of a 100kg mass can be moved with only 500 newtons of force. Adding an extra pulley increases the mechanical advantage. If the pulley has 2 wheels, the distance between the rope sections and the wheel grooves is only half the distance, but the mechanical advantage still applies. Adding another pulley increases the mechanical advantage, but can be risky.
Mechanical advantage is the ratio of force used versus force applied. The calculations are made under the assumption that the ropes and weights do not elongate or lose energy due to friction. If the weights are very light, the mechanical advantage is greater than that in the real world. To calculate the mechanical advantage, the weight of the load to be lifted must be the same as the weight of the person using the pulley.
A single moveable pulley has a mechanical advantage of two. The weight passes around the pulley, and 1 end of the rope is attached to a fixed point. The pulling force is then applied to the other end of the rope. The distance the weight travels doubles, or halved, depending on the direction of the pulley. Adding a second pulley reduces the distance and the effort required to lift it.
There are several ways to calculate the mechanical advantage of a pulley system. Some methods are specific to certain types of systems, while others work for all systems. The T-Method is a good choice in many applications, as it calculates the units of tension for each rope segment. Once you have determined the input force, you need to determine the maximum force that will be applied to each component. A compound pulley, for example, will require 4 units of tension for each rope segment.
In simple terms, the effort is the amount of force needed to lift the load. This force is measured in newtons (N). A mechanical advantage is often presented without units. If the student does not have this unit, you may need to convert the units to newtons, since 1 kilogram is equal to 10 newtons. If you can’t figure out the units of effort, you can use the KWL chart provided by the teacher.

Safety precautions

There are a few safety precautions you should take when using a pulley. First, always check the SWL (safe working load) before attaching anything to the pulley. This indicates the maximum weight and angle the pulley can safely handle. Second, make sure that your work area is free from people and debris. Third, wear a hard hat to protect your head from blows and falling objects.
Another important consideration is anchoring. Although the pulley reduces the weight of an object, it is not enough to eliminate the weight. This is especially true if you are hoisting a heavy object, such as a motorcycle or lawnmower. It is important to ensure that the anchoring point can support the entire weight of the load. It is also important to follow proper anchoring procedures when using a pulley to lift a motorcycle or lawnmower.
In addition to the safety latch, you should use a tag line to control the suspended load. Remember that a chain pulley block is necessary for vertical lifting. You should also wear personal protective equipment (PPE) while using a pulley to avoid injuries. If your workplace does not have an PPE policy, you should consider implementing a similar policy. These safety guidelines are a good start.
If you are using a pulley to lift heavy objects, make sure to wear gloves. Those who are not familiar with rope-pulling will have an easier time demonstrating how it works. If you are using a rope-pulley system in a classroom, be sure to follow lab safety guidelines. Wear cloth gloves, clear the area, and do not jerk the rope. In addition, never allow yourself to be pulled into the rope by an unfamiliar person.
Another important safety precaution when using a pulley is to ensure that the anchor point for your system is adequate to support the weight of the object being lifted. Check with the manufacturer of the pulley to find out what its weight limit is, as some types of pulleys are designed to lift much heavier weights than others. It is important to follow all manufacturer’s instructions when using a pulley.