Double-beam Bridge Crane for lifting paper rolls in papermaking workshop
The double-girder bridge crane used to lift paper rolls in the papermaking workshop is a special lifting equipment adapted to the continuous, efficient and precise requirements of papermaking production. Its core features are designed around "stability, accuracy, durability and economy".
Technical Parameters:
| Lifting Capacity | 30-100 tons |
| Span | Matching the workshop width, mainstream 16.5 - 22.5 meters (covering the transverse range of paper machine + storage area) |
| Lifting Height | Meet the requirements of stacking (2-3 layers of paper rolls) + equipment maintenance, conventional 9-16 meters |
| Work Duty | Because the paper production line operates 24 hours a day, most of the paper is A6-A7 grade (high frequency, heavy load, and annual working hours exceeding 4,000 hours) |
Technical Highlights: Customized for Papermaking
1. Damage-Preventing Lifting Technology
Smooth Control: Lifting/operation utilizes S-curve speed regulation (soft start and stop) to prevent roll sway; cushioning pads are installed at the contact area between the hoist and the paper roll to prevent indentation.
Precise Alignment: Laser ranging and PLC control ensure paper roll placement with an accuracy of ≤5mm, making it compatible with automated warehousing systems.
2. Efficient Collaborative Design
Dual Trolley Mode: Simultaneously lifts two paper rolls (or one primary and one secondary, with the primary hoist lifting the paper roll and the secondary hoist lifting accessories), reducing single trolley round-trip time and improving transfer efficiency by 30%-50%.
Side Auxiliary Hoist: A small 5-10 ton hoist is equipped for rapid lifting of tools and spare parts, avoiding overutilization of the main lifting mechanism. 3. Safety and Intelligent Guarantee
Redundant Protection: Dual braking systems (electromagnetic and mechanical), three-level overload alarm (warning/limited movement/emergency stop), and anti-overshoot limiters (optical and mechanical dual safety).
Intelligent Monitoring: Real-time monitoring of wire rope wear, motor temperature, and spreader position. Fault alarms are generated within seconds and the machine is shut down, reducing the risk of paper machine downtime (a single hour of downtime can result in losses of hundreds of thousands of yuan).