Product Description
High Performance Pulley for Belt Conveyors
BRIEF INTRODUCTION
Our company has adopted proprietary technology and equipment imported from German PWH company for the design and manufacturing of various pulleys . As a key component of the conveyor, the pulley should have high reliability. Our company's R&D center has improved the pulley structure, reduced structural stress, and increased the lifespan and reliability of the pulley group through finite element analysis and optimization calculations. Our company's pulley is manufactured from specialized high-end manufacturing equipment and has achieved serialized and large-scale production.
We have produced conveyor pulleys for belt width up to 2.4 m, pulley diameter up to 1.8 m, and maximum tension up to 300 tons.
PRODUCT INFORMAITON
| Product Name | Pulley |
| Adhesive Material | smooth, ordinary rubber, wear-resistant rubber, UHMW-PE, rubber ceramic, etc.. |
| Adehensive Treatment | glued or casted |
| Carrying Capacity | light, medium and heavy type |
| Connection Mode | Shafts and wheels of the medium and heavy-duty pulley are connected by expansion sleeves. |
| Pulley Pipe | made of Q235B carbon steel, with high roundness and straightness ensuring rotation balance |
| Shaft | 45 # round steel or according to your requirements; ultrasonic inspection, quenching and tempering treatment, strict control of key fit size tolerances, greatly extending service life. |
| Bearing Brands | Havalo, SKF, FAG, SNK or according to your requirements |
| Bear Seat | Integral bearing seat, partial bearing seat |
| Color | bright red paint or according to your requirements |
VARIOUS TYPES OF PULLEY ADHESIVE SURFACE
BEARING SEAT MODE
TECHNICAL SPECIFICATIONS & PARAMETERS
| Technical Parameters for Belt Conveyor Pulley | ||||||
| Belt Width (mm) | Pulley Standard Diameter without Adhesive Layer(mm) | |||||
| 650 | 200,250,320,400,500,630 | |||||
| 800 | 200,250,320,400,500,630,800,1000,1250 | |||||
| 1000 | 250,320,400,500,630,800,1000,1250,1400,1600 | |||||
| 1200 | 250,320,400,500,630,800,1000,1250,1400,1600 | |||||
| 1400 | 320,400,500,630,800,1000,1250,1400,1600 | |||||
| 1600 | 400,500,630,800,1000,1250,1400,1600 | |||||
| 1800 | 250,400,500,630,800,1000,1250,1400,1600 | |||||
| 2000 | 400,500,630,800,1000,1250,1400,1600 | |||||
| Technical Parameters | ||
| 1 | Outer Circle Diameter D Deviation | 200 ≤ 1.5 400 ≤ 2.0 1000 ≤ 2.5 |
| 2 | Radial Runout of Outer Circle | D ≤ 200 ; without adhesive 0.3 ;with adhesive 0.5 200 < D ≤ 800 ; without adhesive 0.6; with adhesive 1.1 800 < D ≤ 1600 ; without adhesive 1.0; with adhesive 1.5 1600 < D ≤ 1800 ; without adhesive 1.5; with adhesive 2.0 |
| 3 | Static Balance Accuracy | G40 |
PROCESS FLOW OF PULLEY
Our company is equipped with necessary equipment for processing pulleys, such as large oil pressure machines, rolling machines, specialized pulley automatic explosive welding operators, large diameter lathes, boring machines, ultrasonic flaw detectors, static balancing devices, pressure casting machines, etc. Due to the special correction process adopted by the company, the pulley pipe skin is rounded before processing, and the pulley pipe wall is uniform after processing, thereby ensuring that the pulley has high static balance performance and high mechanical performance.
PRODUCT FEATURES
For pulleys with complex forces, large loads and used in heavy working conditions, they all adopt a cast welded structure and expansion sleeve connection. Compared with traditional drums in China, this type of drum mainly has the following characteristics :
(1) The structural parameters of the pulley are advanced and reasonable, and there is a dedicated computer calculation program to determine the shaft diameter, cylinder skin thickness, wheel amplitude plate shape and spacing, as well as the position of the circumferential weld seam set at the position where the stress is minimum and the number of cycles is minimum.
(2) The key technology of using single sided welding and double sided forming ensures the quality of the weld seam.
(3) The expansion sleeve connection is used between the drum hub and shaft, which not only solves the problem of key connection stress concentration that has been existing for many years and the technical difficulties of manufacturing and installing axial double keyways, but also achieves overall quenching and eliminates welding internal stress.
(4) The circumferential and longitudinal welds of the pulley have undergone non-destructive testing, and the casting quality of the wheel hub has undergone magnetic particle or ultrasonic testing.
(5) The total radial runout of the outer circle after roller casting is less than 1mm.
(6) All drums undergo static balance tests before leaving the factory to achieve G40 accuracy.
(7) All driving pulley and directional pulley with high stress have undergone finite element analysis to ensure that the stress and strain of the rollers meet the requirements.
Due to a series of measures taken, the pulley group produced by SK has a reasonable structure, large bearing capacity, and reliable performance. And it overcomes the problem of fatigue fracture at the welding seam of the existing pulley plate in China. The pullley (including the welding part) is guaranteed to have a rotational fatigue strength of over 108°.
WORKSHOP OF FINISHED PULLEIES
PACKAGE AND DELIVEYR
APPLICATION INDUSTRIES
CONVEYORS EPC/BOT CONTRACTING CAPABILITY
VARIOUS CONVEYOR SPARE PARTS SUPPLY
AERIAL VIEW OF OUR FACTORY
INTELLIGENT PRODUCTION & TESTING
CERTIFICATES & HORNORS
BRANCHES & OFFICES
TEAM BUILDING
LONG-TERM STRATEGIC COOPEATORS
MAIN CUSTOMERS
CUSTOMERS VISITS
DOMESTIC & OVERSEAS EXHIBITIONS
SINGING CEREMONY
GLOBAL BUSINESS NETWORK
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| Certification: | CE, ISO |
|---|---|
| Pulley Sizes: | Kk |
| Manufacturing Process: | Forging, Casting |
| Material: | Carbon Steel |
| Surface Treatment: | Smooth, Rubber or Ceramics |
| Application: | Chemical Industry, Grain Transport, Mining Transport, Power Plant, Port, Dock, Energy, Cement, Metallurgy, Steel |
| Samples: |
US$ 7/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
Can you explain the concept of "efficiency" in pulley systems?
In pulley systems, efficiency refers to the ratio of output work or power to the input work or power, taking into account any losses or inefficiencies in the system. It represents how effectively the pulley system converts the input energy into useful output energy.
The efficiency of a pulley system can be affected by various factors, including friction, mechanical losses, and the design and condition of the pulleys and ropes. Here are some key points to understand about efficiency in pulley systems:
1. Mechanical Advantage and Efficiency: Pulley systems can provide a mechanical advantage by reducing the effort force required to lift a load. However, it's important to note that while a higher mechanical advantage generally means less effort is needed, it may also result in lower efficiency. This is because as the mechanical advantage increases, the system may experience higher frictional losses and other inefficiencies.
2. Friction and Efficiency: Friction plays a significant role in the efficiency of pulley systems. The interaction between the pulley wheels and the ropes or belts can result in frictional losses, which reduce the overall efficiency of the system. Friction can be minimized by using pulleys with low-friction bearings or by lubricating the contact surfaces.
3. Rope or Belt Material: The choice of rope or belt material can impact the efficiency of a pulley system. Different materials have varying coefficients of friction, flexibility, and durability, which can affect the overall efficiency. For example, using a rope or belt with low friction and high strength can help reduce energy losses and improve efficiency.
4. Pulley Design and Condition: The design and condition of the pulleys also influence efficiency. Pulleys should be properly aligned, have smooth surfaces, and be free from damage or wear. Misaligned or worn pulleys can increase friction and decrease efficiency.
5. System Load: The efficiency of a pulley system can vary based on the magnitude of the load being lifted or moved. Higher loads can result in increased friction and mechanical losses, leading to lower efficiency.
Efficiency is typically expressed as a percentage, with 100% representing a perfectly efficient system where all the input energy is converted into useful output energy. In real-world pulley systems, efficiency is often less than 100% due to various factors, including friction, heat generation, and other losses.
It's important to consider efficiency when designing or evaluating pulley systems. Higher efficiency means a more effective use of input energy, reduced energy waste, and improved overall performance.
Can pulleys be used for both horizontal and vertical lifting?
Yes, pulleys can be used for both horizontal and vertical lifting. The versatility of pulley systems allows them to be utilized in various lifting applications, regardless of the direction of the load. Here's how pulleys can be used for horizontal and vertical lifting:
1. Horizontal Lifting: In horizontal lifting scenarios, pulleys can be employed to change the direction of the force applied to the load. By using a combination of fixed and movable pulleys, the force can be redirected to pull the load horizontally. This is commonly seen in applications such as manual hoists or block and tackle systems used in construction, where heavy objects need to be moved horizontally across distances.
2. Vertical Lifting: Pulleys are widely used in vertical lifting applications, such as cranes, elevators, and lifting systems. In these setups, the pulleys are typically arranged in such a way that the load can be lifted vertically. By using multiple pulleys and ropes or cables, mechanical advantage can be achieved, making lifting heavier loads easier. The pulleys distribute the load's weight across multiple lines, reducing the effort required to lift the load.
It's worth noting that the number and arrangement of pulleys can vary depending on the specific lifting requirements. For example, a single fixed pulley can change the direction of the force but does not provide any mechanical advantage. On the other hand, systems with multiple pulleys, such as compound pulley systems or block and tackle setups, can provide significant mechanical advantage, making lifting heavier loads more manageable.
Whether it is horizontal or vertical lifting, the principles of pulley mechanics remain the same. Pulleys allow for force redirection, mechanical advantage, and load distribution, making lifting tasks more efficient and manageable. The specific configuration and setup of the pulley system will depend on the lifting requirements and the desired level of mechanical advantage.
What is a pulley, and how does it function in mechanical systems?
A pulley is a simple machine consisting of a grooved wheel and a rope, cable, or belt that runs along the groove. It is used to transmit force and motion in mechanical systems. Here's a detailed explanation of how a pulley functions:
1. Mechanical Advantage: The primary function of a pulley is to provide mechanical advantage. By changing the direction of the force applied and distributing it over multiple segments of the rope or belt, a pulley system allows for easier lifting or moving of heavy loads. The mechanical advantage gained depends on the number of pulleys used in the system.
2. Force Transmission: When a force is applied to one end of the rope or belt, it creates tension that causes the pulley to rotate. As the pulley turns, the force is transmitted to the load attached to the other end of the rope or belt. This force transmission allows for the movement and manipulation of objects in mechanical systems.
3. Directional Change: One of the key functions of a pulley is to change the direction of the applied force. By redirecting the force along a different path, a pulley system enables the operator to exert force from a more convenient or advantageous position. This directional change is particularly useful in situations where the force needs to be applied vertically, horizontally, or at an angle.
4. Speed and Torque Conversion: In addition to changing the direction of force, pulleys can also be used to convert speed and torque in mechanical systems. By varying the size of the pulleys or using pulleys of different diameters, the rotational speed and torque can be adjusted according to the requirements of the system. This speed and torque conversion allows for the optimization of power transmission and the matching of different rotational speeds between input and output components.
5. Multiple Pulley Systems: Pulleys can be combined in systems to achieve increased mechanical advantage or to create complex motion patterns. In systems with multiple pulleys, such as block and tackle arrangements, the load is distributed over several segments of rope or belt, further reducing the effort required to lift heavy objects. These systems are often used in cranes, elevators, and other applications where heavy lifting is necessary.
6. Fixed and Movable Pulleys: Pulleys can be categorized as fixed or movable. A fixed pulley is attached to a stationary structure, and its main function is to change the direction of force. A movable pulley, on the other hand, is attached to the load being moved and moves with it. Movable pulleys provide mechanical advantage by reducing the effort required to lift the load.
7. Belt and Rope Pulleys: Pulleys can have different designs depending on the application. Belt pulleys typically have a grooved surface to grip and guide belts, while rope pulleys have a smooth surface to minimize friction and prevent rope wear. The choice between belt and rope pulleys depends on factors such as load requirements, operational environment, and desired efficiency.
Overall, a pulley is a versatile mechanical device that functions as a force multiplier, directional changer, and speed/torque converter in mechanical systems. Its ability to provide mechanical advantage, change force direction, and facilitate complex motion patterns makes it an essential component in various applications, including lifting, transportation, and power transmission.
editor by CX
2024-05-14
