C-Hook: The "gentle iron arm" for lifting paper rolls
Amidst the light and shadow of the papermaking workshop, a yellow C-shaped hook, like a precisely cut crescent moon, gently grips the paper roll core. To lift tons of paper rolls, while also ensuring a "smooth surface"—this is the "hard-soft philosophy" unique to paper roll lifting.
Technical Parameters:
| Lifting Capacity | 10 T, 16 T, 25 T (covering the weight of a single roll of paper) |
| Lifting Speed | 5~12m/min (variable frequency) |
| Mandrel matching diameter | φ76mm, φ152mm (mainstream paper roll core) |
| Maximum coil diameter compatible | φ2200mm~φ3000mm |
| Work Duty | A 6 |
1. "Roll-Protecting Mechanics" in the C-Shaped Bending Arc
The C-shaped hook, forged from high-strength alloy steel, embodies dual design wisdom:
Soft Fit: The hook's arc radius precisely matches the paper roll core (e.g., mainstream specifications of φ76/152mm). The contact area acts as a "hug" to distribute pressure, preventing core deformation and roll edge collapse.
Load-Bearing Strength: The hollow box section (or truss structure) reduces deadweight by 30% while maintaining a rated load of 10-30 tons, reducing crane load and making "light lifting heavy" a reality. 2. Customized "Protective Armor" for Paper Rolls
Paper rolls are sensitive to pressure, scratches, and moisture, and the C-type hook addresses these challenges:
Zero Contact Damage: The hook body and paper roll contact area are covered with a wear-resistant rubber liner (Shore hardness 60-70A), and the edges are rounded to prevent damage and fluffing on the paper roll ends.
Secure Lock: A built-in spring-loaded locking tongue and hydraulic anti-slip device automatically lock after hooking. Even during an emergency stop, the paper roll remains "embedded" in the hook, preventing it from rotating or slipping.
Moisture-Proof Design: The hook body is sprayed with a hydrophobic coating to reduce water droplets when lifting damp paper rolls, keeping the paper surface dry. 3. Breaking Down the Efficiency Constraints of "Traditional Lifting"
Compared to the tedious process of wire rope tying (threading → knotting → checking, taking 3-5 minutes per operation):
Second-second hooking: The C-type hook "hooks into the shaft" in just 10 seconds, increasing single-shift lifting efficiency by 50%, adapting to the "roll-out-per-minute" pace of paper production lines.
Multi-roll Compatibility: Some dual-hook arm designs can simultaneously lift two small-diameter paper rolls (such as toilet paper base), facilitating smoother batch transfers.