Both disc brakes and drum brakes are widely used on overhead and gantry cranes, and “better” depends on the duty profile and environment. مكابح قرصية generally offer superior heat dissipation and more consistent torque at higher speeds, which makes them attractive for high-duty hoisting, frequent stops, and applications where stable braking performance is critical. They can also be easier to inspect and maintain in some layouts.
فرامل الطبل (including electro-hydraulic block brakes) are extremely common in crane travel and hoist systems because they are rugged, proven, cost-effective, and tolerant of harsh industrial conditions. They often integrate well with electro-hydraulic thrusters and standard crane architectures.
يجب أن يكون الاختيار مدفوعًا بعزم الدوران المطلوب، وطاقة التوقف، ودورة العمل (التوقفات/ساعة)، وسرعة العمود، وقيود المساحة، والتعرض للغبار والرطوبة أو التآكل. أفضل مكبح للرافعة هو الذي يتم حجمه بشكل صحيح لكل من العزم والحمل الحراري.
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