Name: ISO 6555:1988 — Shipbuilding — Topping winches
SKU: ISO 6555:1988
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ISO 6555:1988 PDF — Shipbuilding — Topping winches — GOST Standards

Types of Topping Winches The standard classifies winches as lightly powered or externally powered, with power sources including electric and hydraulic drives. Winches are further classified by their drive side: right-hand or left-hand, based on the position of the reduction gear or drum drive.
Design Requirements Key design parameters focus on drum dimensions-diameter must be at least 16 times the topping rope diameter, and drum length to accommodate the full rope in up to three layers. Features such as split drums to separate messenger ropes and topping ropes are also covered. The flange height of the drum must ensure proper rope containment.
Safety and Control Systems Braking systems are essential, requiring automatic engagement when controls are off or power is cut. Control brakes must hold at least 1.5 times the drum load, ensuring stable load holding during operations. The standard also specifies emergency stop mechanisms to shut down winch operations safely.
Load and Stress Specifications The topping winch must withstand drum loads and holding loads, with material stresses limited to fractions of the material's proof stress for durability and safety. Hauling overload requirements specify the winch should handle up to 1.25 times of the nominal drum load.
Performance Criteria Minimum operational speeds, continuous operation times, and load handling capabilities are standardized to ensure consistent and reliable performance. Speed control options for the drum are permitted if agreed upon by purchaser and manufacturer.
Testing and Acceptance The winch undergoes comprehensive factory and on-board testing, including no-load operation, loaded hoisting/lowering, holding load endurance, and emergency operational checks. Tests validate factors such as oil leakage, bearing temperature, power input, and brake system functionality.
Marking and Designation ISO 6555 specifies clear marking requirements, including the standard number, nominal size, type, side (right or left), and motor power details (e.g., voltage and frequency for electric drives). This ensures traceability and conformity with the standard.

ISO 6555:1988 PDF

Abstract

Overview

Похожие стандарты

Key Topics

Applications

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