Product Description
Nylon Sheave Wire Lifting Pulley Block
This aluminum alloy and MC nylon open type hoisting tackle with hook possesses light dead weight, which is equipped with the aluminum alloy side panel and the MC nylon sheave. This single Sheave Pulley block is the open type. Our product can be used for lifting heavy objects and other operations in the line construction.
Main Specifications
| Item Number | Model | Number of Sheave | Rated Load (kN) | Outer Diameter of Sheave ×Sheave Width (mm) | Rope Diameter (mm) | Weight (kg) | Hoisting Point Type | ||
| 11101 | QHN1-1K | 1 | 10 | Φ100×31 | Φ7.7 | 1.8 | G | H | |
| 11102 | QHN1-2 | 2 | 10 | Φ80×27 | Φ6 | 1.8 | G | H | |
| 11103 | QHN1-3 | 3 | 10 | Φ80×27 | Φ6 | 2.1 | G | H | |
| 11111 | QHN2-1K | 1 | 20 | Φ120×35 | Φ9.3 | 2.2 | G | H | B |
| 11112 | QHN2-2 | 2 | 20 | Φ100×31 | Φ7.7 | 2.6 | G | H | |
| 11113 | QHN2-3 | 3 | 20 | Φ100×31 | Φ7.7 | 3.7 | G | H | |
| 11121 | QHN3-1K | 1 | 30 | Φ150×39 | Φ11 | 3.4 | G | H | B |
| 11122 | QHN3-2 | 2 | 30 | Φ120×35 | Φ9.3 | 4.5 | G | H | |
| 11123 | QHN3-3 | 3 | 30 | Φ100×31 | Φ7.7 | 4.6 | G | H | |
| 11131 | QHN5-1K | 1 | 50 | Φ166×40 | Φ13 | 5.2 | G | H | B |
| 11133 | QHN5-2 | 2 | 50 | Φ150×39 | Φ11 | 5.5 | G | H | |
| 11134 | QHN5-3 | 3 | 50 | Φ120×35 | Φ9.3 | 5.1 | G | H | |
| 11141 | QHN8-1K | 1 | 80 | Φ205×49 | Φ17 | 7.2 | G | H | B |
| 11142 | QHN8-2 | 2 | 80 | Φ166×40 | Φ13 | 8.3 | G | H | |
| 11143 | QHN8-3 | 3 | 80 | Φ150×39 | Φ11 | 7.9 | G | H | |
| 11151 | QHN10-1K | 1 | 100 | Φ246×60 | Φ18.5 | 11.4 | G | B | |
| 11152 | QHN10-2 | 2 | 100 | Φ166×40 | Φ13 | 10.2 | H | ||
| 11153 | QHN10-3 | 3 | 100 | Φ150×39 | Φ11 | 11.7 | H | ||
| 11161 | QHN15-1K | 1 | 150 | Φ280×65 | Φ21.5 | 12.1 | B | ||
| 11162 | QHN15-2 | 2 | 150 | Φ205×49 | Φ17 | 12.8 | H | ||
| 11163 | QHN15-3 | 3 | 150 | Φ166×40 | Φ13 | 11.8 | H | ||
| 11164 | QHN15-4 | 4 | 150 | Φ150×39 | Φ11 | 13.9 | H | ||
Uses: Applied in line construction for lifting weight.
Features: Adopt aluminum alloy side panel and MC nylon sheave.so it is light in weight.the single sheave hoisting tackle is open style.
To support the Transmission work, CHINAMFG Power has Tubular Gin Pole, Hydraulic cable puller, wire rope pulley block, hoisting tackle,
Wire rope gripper
, Cable reel spool and stand- all are OEM and professionally produced per ISO 9001:2008, which are being sold to over more than 50 countries in the world. Some items like emergency restoration tower and crossing structure, we can customized, and the safety tools and accessories, are not demanded the MOQ. You can freely help you out either Tech issue or Products requirements. Pls contact us. Thanks.
1. Training and services.
CHINAMFG is a company specializing in the development, design and manufacture of electrical construction equipment and tools. We not only manufacture and sell international standard products, OEM and custom products, but also provide quality tracking and service monitoring.
2. How about the quality of your products?
Our products are manufactured in strict accordance with national and international standards, and each product is tested before delivery. If you would like to view our quality certification and various test reports, please consult us.
3. Why do you choose us?
Because we can provide you with excellent service, quality and reasonable price. In addition, we can also provide smooth delivery of goods, excellent customer solutions.
4. Customer inquiry.
If there is an emergency, customers can also use online contact methods (online Chat, Skype, WhatsApp, ) for faster and better communication. Any enquiry will be answered within 12 working hours.
5. How to obtain samples?
We can provide free samples to the buyer for testing, but the buyer needs to pay the freight. Existing samples take 2-3 days. If there is no stock, we will advise the delivery date.
6. How about packing and shipping?
All goods will be packed in plywood boxes for safe, long haul transport. Support EXW, FOB, CIF, CFR terms.
Required documents such as packing list, commercial invoice, bill of lading, air waybill, CO, Form E, Form F etc will be provided.
Note: If you do not find the product you need, please feel free to contact us. We will provide the best quotation as soon as we verify your requirements.
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| After-sales Service: | 1 Year |
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| Warranty: | 1 Year |
| Type: | Ring |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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How are sheave pulleys used in the operation of cranes and hoists?
Sheave pulleys play a vital role in the operation of cranes and hoists, enabling the lifting and movement of heavy loads. Here is a detailed explanation of how sheave pulleys are used in the operation of cranes and hoists:
In cranes and hoists, sheave pulleys are typically incorporated into the lifting mechanism, often in combination with cables or ropes. The integration of sheave pulleys involves the following steps:
1. Lifting Mechanism Design: The lifting mechanism of a crane or hoist is designed based on the specific requirements of the lifting operation. Factors such as load capacity, lifting height, and application type are taken into consideration.
2. Wire Rope Selection: The appropriate wire rope or cable is selected based on the load capacity and other relevant factors. The wire rope is chosen to have suitable properties such as strength, flexibility, and resistance to wear or corrosion.
3. Sheave Pulley Configuration: Sheave pulleys are configured and positioned within the lifting mechanism to guide and support the wire rope. The pulleys are mounted on a framework or structure that allows them to rotate freely.
4. Multiple Pulley Systems: Cranes and hoists often utilize multiple sheave pulleys arranged in various configurations to achieve mechanical advantage and increase lifting capacity. These configurations include single sheave, double sheave, and multiple sheave arrangements.
5. Wire Rope Routing: The wire rope is threaded through the grooves of the sheave pulleys, creating a continuous loop. The pulleys guide the wire rope along the intended path, ensuring proper alignment and minimizing friction.
6. Drive Mechanism: A drive mechanism, such as an electric motor or hydraulic system, provides the power necessary to rotate the sheave pulleys. The rotation of the pulleys causes the wire rope to move, lifting or lowering the load.
7. Lifting and Lowering: When the crane or hoist is operated, the sheave pulleys rotate, causing the wire rope to move. As the wire rope is wound or unwound from the pulleys, the load is lifted or lowered accordingly. The mechanical advantage provided by the multiple pulley systems allows for efficient lifting and precise control.
8. Load Control and Safety: Cranes and hoists incorporate various control mechanisms, such as brakes and limit switches, to ensure safe and controlled lifting operations. These mechanisms work in conjunction with the sheave pulleys and other components to prevent overloading, uncontrolled descent, or other hazardous situations.
Regular maintenance and inspection of the sheave pulleys, wire rope, and other lifting components are essential to ensure the continued safe and reliable operation of cranes and hoists. This includes lubrication of the pulleys, checking for signs of wear or damage, and making necessary adjustments or replacements to maintain optimal functionality.
What safety considerations should be kept in mind when using sheave pulleys?
When using sheave pulleys, it is important to prioritize safety to prevent accidents and ensure the well-being of individuals involved. Here are several safety considerations that should be kept in mind:
1. Proper Installation: Ensure that sheave pulleys are installed correctly according to the manufacturer’s guidelines and industry standards. Improper installation can lead to pulley misalignment, belt or chain slippage, or premature failure, posing safety hazards. Follow the recommended procedures for pulley alignment, tensioning, and securing to maintain safe operation.
2. Regular Inspections: Perform regular inspections of sheave pulleys to identify any signs of wear, damage, or misalignment. Inspect the pulley grooves, cables, belts, or chains for signs of fraying, cracking, or stretching. Any abnormalities should be addressed promptly to prevent accidents and ensure the reliable operation of the system.
3. Guarding: Install appropriate guards or protective enclosures around sheave pulleys to prevent accidental contact with moving parts. These guards should be designed to prevent fingers, clothing, or other objects from getting caught in the pulley or belt/chain. Adequate guarding reduces the risk of entanglement, pinch points, or other potential hazards.
4. Lockout/Tagout Procedures: When performing maintenance or repair work on machinery or equipment with sheave pulleys, follow proper lockout/tagout procedures. Lockout/tagout procedures involve isolating the power source, de-energizing the system, and securing it with locks or tags to prevent accidental startup. This ensures the safety of personnel working on or near the sheave pulleys.
5. Load Capacity: Ensure that the sheave pulleys are not overloaded beyond their specified load capacity. Exceeding the load capacity can lead to pulley failure, belt or chain breakage, or sudden release of tension, which can cause severe injuries or damage. Refer to manufacturer guidelines and engineering calculations to determine the appropriate load capacity for the specific application.
6. Proper Training: Provide adequate training to personnel who operate or work around machinery or equipment with sheave pulleys. Training should cover safe operating procedures, hazard identification, emergency response protocols, and the proper use of personal protective equipment (PPE) such as gloves, goggles, or safety vests. Well-trained personnel are better equipped to handle potential risks and ensure safe practices.
7. Maintenance and Lubrication: Regularly maintain and lubricate sheave pulleys as per manufacturer recommendations. Proper maintenance includes cleaning debris, inspecting for wear or damage, and applying appropriate lubrication to reduce friction and ensure smooth operation. Neglecting maintenance can lead to pulley malfunction, decreased performance, and increased safety risks.
8. Environmental Factors: Consider environmental factors when using sheave pulleys. For example, in outdoor applications, protect the pulleys from exposure to moisture, extreme temperatures, or corrosive substances that could compromise their integrity. Adhere to relevant safety standards and guidelines specific to the environment in which the sheave pulleys are utilized.
9. Emergency Stop: Ensure that machinery or equipment with sheave pulleys is equipped with an easily accessible emergency stop mechanism. This allows for quick and immediate shutdown of the system in case of emergencies, preventing further hazards or injuries.
10. Regulatory Compliance: Adhere to local occupational health and safety regulations and standards applicable to the use of sheave pulleys. Stay up-to-date with safety guidelines and best practices to ensure compliance and create a safe working environment.
By considering these safety considerations when using sheave pulleys, you can minimize the risk of accidents, protect personnel, and maintain the integrity and efficiency of the system.
Can you explain the types of cables or ropes typically used with sheave pulleys?
When it comes to sheave pulleys, different types of cables or ropes can be used depending on the specific application and desired functionality. Here is a detailed explanation of the types of cables or ropes typically used with sheave pulleys:
1. Wire Rope: Wire ropes are commonly used with sheave pulleys in various lifting and cable-based systems. They are constructed by intertwining individual steel wires to form strands, which are then twisted together to create the final wire rope. Wire ropes offer excellent strength, durability, and resistance to abrasion and crushing. They are suitable for heavy-duty applications that require high load capacity and robust performance.
2. Synthetic Rope: Synthetic ropes, such as nylon or polypropylene ropes, are also frequently used with sheave pulleys. These ropes are made from synthetic fibers and offer advantages such as lightweight, flexibility, and resistance to chemicals and UV rays. Synthetic ropes are commonly used in applications where weight reduction, corrosion resistance, or non-conductivity are important considerations.
3. Flat Belt: In some cases, flat belts made of materials such as rubber or fabric-reinforced rubber are used with sheave pulleys. Flat belts provide a wide contact surface area with the pulley groove, allowing for efficient power transmission. They are commonly used in applications that require smooth and quiet operation, such as conveyor systems or certain types of machinery.
4. V-Belt: V-belts, also known as wedge belts, are a type of belt with a trapezoidal cross-section. They are commonly used with sheave pulleys in various power transmission applications. V-belts provide high traction due to their wedged shape, allowing for efficient power transfer and reduced slip. They are often used in applications that require high-speed power transmission, such as automotive engines or industrial machinery.
5. Timing Belt: Timing belts, also called synchronous belts, are toothed belts that engage with matching toothed pulleys. They are used with sheave pulleys in applications that require precise motion control and synchronization, such as in timing systems for engines or precision machinery. Timing belts offer low maintenance, high efficiency, and accurate positioning capabilities.
6. Cable or Rope Assemblies: In certain specialized applications, pre-assembled cable or rope assemblies may be used with sheave pulleys. These assemblies typically consist of steel cables or synthetic ropes with fittings or connectors already attached. They are commonly used in scenarios where specific load capacities, safety requirements, or customization are necessary, such as in maritime applications, material handling equipment, or suspension bridge systems.
It’s important to note that the selection of the appropriate cable or rope for a sheave pulley system depends on various factors, including the application requirements, load capacity, environmental conditions, and desired performance characteristics. Consulting with manufacturers or engineering professionals can help determine the most suitable type of cable or rope for a specific sheave pulley application.
editor by CX
2024-05-09
