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BOSS

Product catalog summary

Introduction
The document introduces the BOSS® (Brake Only Snag System) developed by DELLNER BUBENZER, designed to manage the kinetic energy in cranes operating at high speeds, preventing damage during snag incidents.

Physical Background
A snag occurs when a crane's spreader or container jams during upward motion, especially at high speeds, leading to potential damage due to increased rope tension.

Snag Detection
The system uses four two-channel load pins installed at strategic points to continuously monitor rope forces, enabling quick detection of snags.

Fast Reaction
Upon snag detection, the system rapidly reduces motor speeds to zero using fast-closing brakes, specifically the SB28.3 service brakes with BUEL® thrusters, achieving a stopping time of 100 to 200ms.

BOSS® Innovation
The BOSS® system improves upon conventional systems by using variable tripping points based on load and speed, allowing for faster detection and reduced stress on crane components.

System Operation
The BOSS® system operates in a series of steps, from detecting overloads to applying full braking torque, ensuring the hoist motion stops within 100 to 200ms.

Key Components

Two-Channel load pins with high-speed amplifiers
BOSS® PLC with integrated overload weighing system
SB and SF brakes with BUEL® thrusters

Advantages

Fastest reaction time
Precise control
TÜV certified
Dynamic snag trip point setting
No maintenance required
Easy retrofitting

Contact Information
For further inquiries, contact DELLNER BUBENZER at [email protected] or call +49 2741 / 9488-0.

Conclusion
DELLNER BUBENZER is a global leader in braking systems, offering solutions across various industries, including cranes, marine, and wind energy.

Catalog excerpts

BRAKE ONLY SNAG SYSTEM DELLNER BUBENZER Germany GmbH Friedrichshuettenstr. 1 D-57548 Kirchen-Wehbach Phone +49 (0) 2741 / 9488-0 [email protected]

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BOSS® - BRAKE ONLY SNAG SYSTEM BOSS®- BRAKE ONLY SNAG SYSTEM PHYSICAL BACKGROUND Today cranes are able to hoist with 180m/min using huge motors up to 1000kW and more. Using huge equipment means also handling huge inertia that must be accelerated and stopped. The energy that has to be controlled by the hoist is increasing with the square of the lifting speed. In a snag case motors and couplings are still rotating for a short period of time whereas the container or the empty spreader has been already stopped. During this period of time all kinetic energy has to be absorbed by the wire ropes. The...

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HOW DOES THE BOSS® SYSTEM WORKS? LOAD PINS SERVICE BRAKE EMERGENCY BRAKE HOIST MOTION Load pins are detecting an overload on one or more corners. BOSS® PLC will cut off power for BUEL® H thrusters, service brakes and BUEL® G for emergency brakes and hoist motors. The electrical reaction time is only 20ms until the brakes are switched off. Service brakes apply full braking torque within 36ms after power off. Emergency brakes apply full braking torque within 70ms after power off. Hoist motion will be stopped after 10 to 110ms. The total stopping time from snag detection to stand still is between...

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BOSS® - BRAKE ONLY SNAG SYSTEM BOSS® - INTEGRATED OVERLOAD WEIGHING SYSTEM KEY COMPONENTS 1. Two-Channel load pins with integrated high speed amplifiers Safe analogue Input modules 2. BOSS® PLC - Special designed components for snag detection - Integrated overload weighing system - Profisafe Interface to crane (based on Profibus / Profinet) 3. SB and SF brake with BUEL® H and BUEL® G thruster - Five times faster compared to other systems BOSS® SAFETY PLC Profisafe communication Two-Channel load pins Profisafe Interface Fastest reaction time Precise control TÜV certified Cross-check of both channels...

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DELLNER BUBENZER is an industry-diverse global leader in the design and manufacture of braking systems for the material handling, crane & hoist, container handling, mining, marine, industrial, offshore, oil & gas, and wind energy sectors. Global manufacturing leadership combined with a commitment to service at the local level positions DELLNER BUBENZER as the world’s first choice for sustainable braking solutions and installations. Our brakes are used in the following industries: ∙ Bridges & Movable Structures ∙ Container Handling ∙ Cranes & Hoists ∙ General Industry ∙ Iron & Steel ∙ Marine Propulsion...

Open the catalog to page 5

BRAKE ONLY SNAG SYSTEM DELLNER BUBENZER Germany GmbH Friedrichshuettenstr. 1 D-57548 Kirchen-Wehbach Phone +49 (0) 2741 / 9488-0 [email protected]

Open the catalog to page 6

BOSS

BOSS

Catalog excerpts

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