Product Description
Pulleyis divided into driving Pulley and reversing Pulley. Pulley is the main force transmission part of belt conveyor (belt conveyor), which is welded by barrel skin and connecting plate. In general, the belt conveyor Pulley with an outer diameter of less than 320mm uses seamless steel pipe as the barrel skin, and the Pulley with an outer diameter of more than 320mm is rolled with steel plate and welded to form the barrel skin, which is called welded Pulley; Some cast steel connecting plates are welded with the cylinder skin as a part of the cylinder, i.e. cast welded structural Pulley
Driving Pulley: it is the main part of transmitting power. It can be divided into single Pulley (the wrapping angle of the belt to the Pulley is 210 ° ~ 230 °), double Pulley (the wrapping angle is up to 350 °) and multi Pulley (for high power). The Pulley can also be divided into steel smooth Pulley, rubber coated Pulley and ceramic Pulley. The smooth Pulley is easy to manufacture, but the disadvantage is that the surface friction coefficient is small. It is generally used in short-distance conveyors. The main advantage of rubber coated Pulley and ceramic Pulley is that the surface friction coefficient is large, which is suitable for long-distance large belt conveyor. Among them, according to different surface shapes, the glue wrapping Pulley can be divided into: smooth bread glue Pulley, CZPT (reticulate) glue wrapping Pulley and herringbone groove glue wrapping Pulley. Herringbone groove rubber coated surface has large friction coefficient, good skid resistance and drainage, but it has directional requirements. Rhombic rubber covered surface is used for two-way conveyor. For Pulleys used in important occasions, it is best to use vulcanized rubber surface. When used underground, the rubber surface shall be made of flame-retardant rubber surface material.
Pulley body
The chemical composition and mechanical properties of the metal materials used in the Pulley body shall comply with the corresponding national standards. Before welding, the steel shall be shot peened by pretreatment process.
Hub
The casting quality of the hub shall be subject to magnetic particle or ultrasonic inspection. For circumferential welds and longitudinal welds of small-diameter Pulleys, the special process of single-sided welding and double-sided forming shall be adopted. All circumferential and longitudinal welds of the Pulley shall be welded with carbon dioxide gas, and NDT shall be carried out to ensure the quality of the welds. Eliminate the welding stress and ensure the normal operation of the Pulley.
Bend pulley
It is used to change the running direction of the conveyor belt or increase the wrapping angle of the conveyor belt on the transmission Pulley. The Pulley adopts smooth rubber surface.
The Pulley shaft shall be forged and subject to NDT, and the flaw detection report shall be provided. The allowable torque and allowable resultant force shall meet the design requirements.
Under the maximum load condition of the Pulley shaft, the deflection between the shaft and the bearing seat is not considered under the condition of Pulley skin stiffness
What makes pulleys so important?
A pulley is a simple tool that makes it easy to lift or move heavy objects. There are many uses for this tool, but let’s take a look at their mechanical advantages. There are several types and many applications, along with their benefits and costs. So what makes them so important? Read on to find out! Below are some of the most common uses for pulleys. Let’s dive into them.
Mechanical advantage
If you’ve ever used rope and pulley systems, you’ve probably noticed their usefulness. A 3:1 mechanical advantage system is like a 300-pound load being moved 1 foot up by 3 feet of rope. Then you can imagine using the same rope to get into a small space. The same principle applies to limited spaces, and a simple mechanical advantage system is just what you need for this purpose.
Assuming frictionless bearings, a single movable pulley can have 2 mechanical advantages. It is attached to a heavy object and requires the pulling force exerted by the jack to lift the heavy object. However, when you use a compound pulley, the force exerted on the rope to lift the object changes direction. The 3 factors used to measure machine efficiency are force, distance, and relative motion.
The mechanical advantage of the pulley is that it reduces the effort required to lift weights. When the rope is attached to the 2 wheels, applying a force of 500 Newtons can lift a mass of 100 kg. This mechanical advantage is why 2 rings in a pulley are better than one. Therefore, using a pulley system will save you energy. You can also use branches instead of ropes and pulleys.
type
There are several different types of pulleys. They can be simple or complex, depending on how they are connected. Simple pulleys have a grooved wheel on 1 end and are attached to an axle. These pulleys are used to lift heavy objects. They are often found on sailboats, and you can even see them on construction sites. On the other hand, stationary pulleys are attached to stationary structures, such as flagpoles. Fixed pulleys can also be used to lift loads from trucks or trains. Pulleys are also commonly used in wells.
Fixed pulley systems use rollers or single wheels. These pulleys are usually made of nylon or wire rope. They are used in heavy duty applications. They are also used in electric motors. A “V” pulley requires a “V” belt to transmit power. Some of these pulleys have multiple “V” grooves to reduce the risk of power slipping. Once installed, fixed pulleys are suitable for many applications.
Simple pulleys are simple pulleys. It has a pulley mounted on an axle and a rope at 1 end. Rope can be used to pull objects, while plastic pulleys can carry lighter loads. There are 2 main types: heavy duty and simple pulley systems. In either case, their function is the same: they change the direction in which the seat belt is fastened. So when comparing the two, it’s easy to decide which 1 is best for you.
application
Pulley systems are simple machines used for a variety of industrial and mechanical tasks. Its design parameters and benefits have improved over the years, but they remain essential for many applications. Let’s take a look at some of the most common applications of pulleys. The applications for pulley systems are endless, from construction to mining, from transportation to packaging. Read on to learn more!
Pulley systems are often used to lift large objects, such as blocks, that might otherwise be too heavy to lift. It also makes the exploration process easier by helping people pull heavy objects into place. It is also widely used on sailing ships. Due to its low cost of use and no need for lubrication, it is a practical choice for many applications. It can be used to lift heavy objects and support long ropes.
The pulley system allows you to change the force required to move the object. For example, a two-wheel pulley system is especially useful for reducing the effort required to lift large objects. The mechanical advantage increases with the number of wheels in the system. In addition, the mechanical advantage of a two-wheel pulley system depends on the ratio of the load weight to the number of rope segments in the system.
cost
In most cases, an idler replacement will cost around $150, but the exact cost will depend on several factors, including the make and model of the car. The cost also depends on the type of idler you need and the cost of the OEM parts. Some pulleys are easy to replace at home, while others require specialized tools, such as pulley wrenches. The chart below shows the cost of popular vehicles. Prices are valid at the time of writing.
The diameter of the pulley is also important, this should be about 60% of the diameter of the active pulley. You can also purchase compensating pulleys at factory prices. Be sure to select the correct size before placing the pulley on the machine. Also, make sure you have enough space for the pulleys. Once you have the desired pulley size, you can determine the best type of belt to install.
While this method is the most common type of belt drive, there are other methods of spinning cup blanks directly from a flat metal disk. One such method is described in US Patent No. 5,500,31. US Patent No. 1,728,002 and shows a method of making a dynamically balanced V-groove pulley. Using a headstock die with sliders increases the cost of the pulley. In addition, different cup blanks require different molds.
lubricating
The lubrication of pulley bearings is relatively simple. The pulley itself rotates smoothly with little vibration. Bearing contact loads are relatively low, and well-lubricated pulleys operate near ambient temperatures. Here are some tips for properly lubricating pulley bearings. Make sure to lubricate the nozzle before applying grease.
Check grease, elastic ring, pulley bearing clearance once a year. If the elastic ring of the pulley is damaged or the roller bearing on the associated pulley is damaged, replace the pulley. Also, check the running noise of the pulleys to see if they are making noise. Check the bearing, damage to the elastic ring may indicate bearing failure or roller failure.
Proper lubrication is critical to the life of the rotating pinion. Avoid exposure to sunlight or water. Protects the pinion meshing area from hard impurities. Liaise with crane operators and lubricators during maintenance and lubrication operations. They should know how to avoid pitfalls in the lubrication process. In case of malfunction, please contact service personnel and take necessary measures.
Compound Pulley System
A compound pulley system is used to lift heavy objects. These systems can use ropes or cords of different sizes. In general, the total weight of all ropes must be less than the weight of a single rope. The system can be used in large areas, but may not be suitable for smaller spaces. To learn more about compound pulleys, read on! Here are some helpful tips. 1. Understand the difference between single wheel and compound wheel
A composite pulley system consists of 3 components: a drive pulley, 1 or more driven pulleys, and 2 pulleys. The drive wheels are usually connected to shafts that are connected to the engine or transmission. The driven wheel is a separate unit mounted on the same shaft as the drive wheel. A compound pulley system helps lift heavy loads. These pulleys are the most common type of pulley system in use today.
Composite pulley systems are widely used on construction sites. They save energy by spreading the weight of heavy loads over multiple smaller loads. This means that the elevator does not have to use high-capacity lifting equipment. Additionally, the compound pulley system allows users to easily adjust power distribution to meet their individual needs. They can also use more than 2 ropes if necessary. This increases the range of motion of the lift arm.
