Scissor Grab - Heavy Duty Mechanical Clamshell Grab for Port & Mining Material Handling | High Efficiency
Product description
The scissor grab adopts scientific structure and advanced technology, combining structural stability, operational flexibility and cost-effectiveness, which can meet the diverse needs of industrial material handling. The following is a detailed description of its core features, structure and advantages:
1. Core Structure & Working Principle
The scissor grab is mainly composed of jaw plates, hinge shafts, connecting rods, pulley blocks and balance frames, all made of high-strength steel, which can withstand heavy loads and harsh working conditions, and is suitable for ports, mines and other scenarios. The working principle is simple and efficient: the mechanical type relies on steel wire ropes, and the hydraulic type relies on hydraulic cylinders to provide power, and controls the opening and closing of the jaw plates through the rotation of the central hinge point; when opening, the supporting ropes are tightened and the scissor arm ropes are loosened, and the reverse operation is performed when closing, using the lever principle to gradually increase the closing torque to ensure that the material is firmly grabbed without leakage, making it a reliable choice for bulk material handling.
2. Key Performance Advantages
High Efficiency & Precision: The scissor-like opening and closing design allows the jaw plates to open to a near-horizontal position, close to the hopper or conveyor chute, reducing material residue and improving loading and unloading efficiency; optional 360° rotation function realizes precise positioning, achieving "one-hook in place" to avoid material spillage, suitable for efficient port and mine operations.
Safety & Stability: Adopting a low center of gravity design and flexible chain connection, it reduces the risk of tipping and avoids collision with ship sides or equipment damage; the mechanical type does not require hydraulic or electrical systems, reducing failure points, and can operate stably in harsh environments such as high dust, humidity and underwater, suitable for underwater dredging operations.
Durability & Low Maintenance: The jaw plates are made of wear-resistant alloy steel, and the reinforced structure extends the service life, adapting to the heavy-duty needs of mines and ports; the design reduces lubrication points and pulleys, making maintenance convenient, and staff can complete all maintenance work on the ground, avoiding high-altitude operation risks; the rolling bearing design extends the lubrication cycle and reduces maintenance costs.
Strong Adaptability: It can be customized according to material characteristics (density, wear resistance) and working conditions, including jaw plate shape, size, lifting capacity, etc., and can grab various bulk materials, adapting to the needs of different industries such as ports, mines, steel plants and dredging.
Certified Quality: All products comply with the ISO 9001 quality management system, pass the inspection and certification of international classification societies (CCS, ABS, LR), meet global export standards, and are reliable material handling equipment trusted by customers around the world.
3. Product Specifications & Customization
The scissor grab has a complete range of specifications, with a lifting capacity of 5t-50t and a bucket capacity of 1m³-20m³, suitable for small and large-scale operation needs. Non-standard customization is supported, including jaw plate shape, lifting capacity, rotation function and material, which can perfectly match existing crane equipment and on-site working conditions. The product is designed with CAD and analyzed by FEM finite element to ensure the stability of each component and give priority to meeting personalized needs.
Application Scenarios
With strong performance and wide adaptability, the scissor grab is widely used in various industrial scenarios of bulk material handling, and is an indispensable core equipment in modern logistics and industrial production. The main application scenarios are as follows:
1. Port & Terminal Operations
As the core equipment for port bulk cargo loading and unloading, it is widely used in container terminals, bulk cargo terminals and ship unloaders. It can handle bulk materials such as coal, ore, grain and chemical fertilizers, greatly improving the efficiency of ship unloading and yard transfer. Compared with traditional grabs, the bucket capacity can be increased by up to 27%, and the single-hook operation efficiency can be increased by 18%, helping ports reduce operating costs.
2. Steel Plant & Metallurgical Industry
It is used for handling raw materials (iron ore, coke) and finished products (steel billets, steel plates) in steel plants, and is adapted to overhead cranes to complete material transfer between workshops, yards and production lines. The design of high closing force and wear-resistant jaw plates ensures stable handling of heavy and high-wear materials, adapting to the high-intensity operation rhythm of steel plants.
3. Mining & Quarry Operations
It is suitable for open-pit mines, quarries and mineral processing plants, used for loading and unloading ores, gravel, stone and other materials. It can operate in harsh environments such as high dust and rugged terrain, and has strong adaptability to various ores. The heavy-duty design ensures long-term stable operation under high-intensity working conditions and improves mining efficiency.
4. Dredging & Marine Engineering
The customized underwater scissor grab is suitable for dredging operations in rivers, lakes and coastal areas. It can grab sediment, sludge and underwater gravel, has good water tightness and corrosion resistance, adapts to long-term underwater operation needs, and is an important equipment for waterway dredging and marine engineering construction.
5. Other Industrial Fields
In addition, it is also widely used in construction sites (handling sand, gravel, concrete blocks), power plants (handling coal, fly ash), and waste treatment plants (handling bulk waste), providing efficient and reliable material handling solutions for various industries.
