The utility model of chain hoists focuses on structural optimization, safety enhancement, operational convenience, and material innovation, improving performance and safety through patented technology and design improvements. The following is a systematic exposition from four aspects: core innovation points, technical details, security features, and industry applications:

1. Structural optimization and technological innovation

Lightweight and material upgrades: Adopting high-strength aluminum alloy, composite materials, or cast aluminum shells, such as the aluminum alloy frame of Coffing RA Lever Holist, to reduce weight and improve portability while ensuring strength. The Kito CX series achieves precise positioning through lightweight design, with high-strength alloy steel chains used in models ranging from 250kg to 1 ton, balancing corrosion resistance and load capacity.

Gear and transmission system improvement: By using multi-stage gear reduction (such as 12:1 mechanical advantage) to reduce operating force, optimize gear meshing accuracy, and reduce wear. The chain hoist described in patent US1572001A achieves precise positioning through a dual through-hole structure and a limiter sensor. The sensor detects the position of the chain link and triggers an automatic stop, achieving an accuracy of single chain link level.

Ergonomic design: Adjustable handle, anti slip grip, and reverse operation function (such as the rotating handle of REL-6000H) to reduce operational fatigue. The Sidewinder handle of CM Tornado 360 supports multi angle operation and is suitable for working in narrow spaces.

2. Safety devices and protective mechanisms

Dual braking system: combining friction braking and electromagnetic braking to ensure automatic locking in case of power failure or malfunction. The chain hoist government of patent US3102580A uses a mechanical speed limiting device to prevent overspeed and avoid the risk of chain breakage.

Overload protection and limiter: Built in shear pin, torque limiter or electronic sensor, automatically shuts down when overloaded. Kito's "Twist Checker" tool can quickly detect chain twists and prevent safety hazards during operation.

Anti drop and anti fall design: The safety hook is equipped with a self-locking spring door to prevent accidental load shedding; The top hook supports 360 ° rotation and is compatible with different installation angles. The limiter sensor works in conjunction with the body detector to ensure that the chain hoist stops accurately at the preset height.

3. Operational convenience and intelligence

Intelligent control and automation: The electric chain hoist is equipped with a remote control/suspension controller, which supports remote operation and emergency stop. The limit sensor can be programmed with multi-level stopping points to achieve automated process control.

Modularity and maintainability: Standardized component design (such as replaceable chains and gears) simplifies the maintenance process. Transparent casing or detachable panel facilitates internal inspection and reduces downtime.

Environmental adaptability: Stainless steel chains are used in corrosive environments (such as food processing and chemical industry), sealing gearboxes to prevent dust and water, and adapting to outdoor or harsh working conditions.

4. Industry application and standard compliance

Industrial and Building Scenarios: Used for lifting heavy equipment in steel plants, shipyards, and warehouses, complying with standards such as ASME B30.16 and OSHA 1910.179 to ensure compliance.

Entertainment and special fields: Used for rapid lifting and lowering of stage equipment in theaters and film and television productions, meeting ANSI E1.6-3 standards to ensure the safety of personnel and equipment.

Energy and Maintenance Operations: In power facility maintenance, lightweight chain hoists (such as REL-1500H) are used for high-altitude operations, supporting rapid deployment and precise positioning.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment