Introduction
The electric rotating hook block consists of hook, rotation mechanism, pulley set, pulley shaft, crossbeam, bearings, housing and anti-fall device. The rotation mechanism consists of motor, reducer, pinion, large gear ring and slewing bearing; the motor drives the pinion through the reducer, and the pinion drives the large gear ring and hook to rotate, achieving 360° continuous rotation. The hook is forged from high-quality carbon steel or alloy steel, with high strength and good toughness after heat treatment; pulleys are made of cast iron or cast steel, with machined rope grooves, wear-resistant and durable; crossbeam adopts high-strength alloy steel, with strong load capacity; slewing bearing adopts large-size slewing bearing, with strong load capacity and stable rotation. During operation, the wire rope passes through the pulley set, transmitting the lifting force to the hook through the reeving mechanism to achieve heavy object lifting; when the load direction needs to be adjusted, start the rotation motor, drive the hook to rotate 360° continuously through the reducer and gear transmission, adjust the load to the required angle; rotation speed is adjustable, can achieve low-speed precise positioning and high-speed fast adjustment. The rotation mechanism is equipped with an electromagnetic brake, automatically braking when power is off to prevent accidental hook rotation; equipped with rotation limit and angle display, can precisely control the rotation angle. The hook is equipped with an anti-fall pawl to prevent accidental unhooking of slings; pulleys are equipped with anti-rope-off baffles to prevent wire rope. The electric rotating hook block can be used with bridge cranes, gantry cranes, metallurgical cranes, quay container cranes, etc., widely used in steel ladle pouring, workpiece assembly adjustment, port container loading/unloading, large equipment installation, steel structure lifting and other occasions requiring load rotation, serving as an efficient special lifting device for occasions requiring load direction adjustment.
Application
Our Advantage
Drives the hook to rotate 360° continuously through motor + reducer + gear transmission, can arbitrarily adjust the load direction and angle without manual assistance pushing and pulling, especially suitable for occasions requiring precise load direction adjustment such as steel ladle pouring, workpiece assembly and equipment installation, greatly improving operation efficiency and safety, far superior to manual rotating hook blocks.
Adopts large-size slewing bearing and gear transmission, with stable rotation, low noise and strong load capacity; rotation speed 0.5~3rpm adjustable, can achieve low-speed precise positioning and high-speed fast adjustment; equipped with electromagnetic brake, automatically braking when power is off to prevent accidental hook rotation; equipped with rotation limit and angle display, can precisely control rotation angle with positioning accuracy up to ±1°, meeting high-precision assembly and pouring requirements.
Controls hook rotation, lifting and lowering through the crane cab or pendant, simple operation, can be completed by one person; can be linked with crane hoisting, trolley travel and bridge travel to achieve automated operation; rotation motor adopts brake motor, with stable start/stop and precise control, greatly reducing operator labor intensity and improving operation efficiency and safety.
The hook is integrally forged from high-quality carbon steel or alloy steel, normalized and tempered, with high tensile strength, good toughness and impact resistance; crossbeam adopts high-strength alloy steel, with strong load capacity; slewing bearing adopts large-size slewing bearing, with strong axial, radial and overturning load capacity; pulleys are made of cast steel, with precision-machined rope grooves, stable operation, wear-resistant and durable, suitable for 5t~200t large-tonnage heavy object lifting and rotation operations.
Equipped with multiple safety devices such as electromagnetic brake (auto brake when power off), rotation limit, overload protection, anti-fall pawl and anti-rope-off baffle, preventing accidental hook rotation, sling unhooking and wire rope 脱槽；rotation mechanism is equipped with a dust cover, preventing dust and foreign objects from intruding into gears and slewing bearing, extending service life; safety factor ≥4 times, tested via 1.25× rated load static test, ensuring safe heavy-load rotation lifting.
Specification
| Parameter | 5~10t | 16~32t | 50~100t | 160~200t |
| Rated Capacity | 5/10t | 16/20/32t | 50/80/100t | 160/200t |
| Number of Pulleys | 2 pcs | 4 pcs | 6‑8 pcs | 8‑10 pcs |
| Reeving Ratio | 2 | 4 | 6‑8 | 8‑10 |
| Wire Rope Dia | 11‑14mm | 14‑18mm | 18‑24mm | 24‑32mm |
| Pulley Dia | 250‑350mm | 350‑500mm | 500‑710mm | 710‑1000mm |
| Hook Type | single hook | single hook double hook | double hook | double hook |
| Rotation Angle | 360 degree continuous | 360 degree continuous | 360 degree continuous | 360 degree continuous |
| Rotation Speed | 1‑3rpm | 0.8‑2rpm | 0.5‑1.5rpm | 0.5‑1rpm |
| Rotation Motor Power | 0.75‑1.5kW | 1.5‑3kW | 3‑7.5kW | 7.5‑15kW |
| Brake Type | electromagnetic brake | Same as left | Same as left | Same as left |
| Positioning Accuracy | ±2° | ±2° | ±1° | ±1° |
| Safety Factor | ≥4 | ≥4 | ≥4 | ≥4 |
| Hook Material | 20 steel 20CrMnTi | Same as left | Same as left | Same as left |
| Pulley Material | Cast iron cast steel | cast steel | cast steel | cast steel |
| Slewing Bearing | Single‑row four‑point contact ball | Same as left | Double‑row different‑diameter ball three‑row roller | Three‑row roller |
| Anti‑fall Device | Anti‑drop pawl anti‑rope‑shedding baffle | Same as left | Same as left | Same as left |
| Weight | 0.3‑0.6t | 0.6‑1.8t | 1.8‑4.5t | 4.5‑9t |
| Applicable Crane | 5‑20t Crane | 20‑50t Crane | 50‑100t Crane | Above 100t Metallurgical Gantry Crane |
