Winch gearboxes
20Pages

Drive Technology Rope winches and gearboxes

The ZOLLERN Group ZOLLERN is one of the pioneers of the metal industry. 3,300 employees at 15 production locations and seven subsidiaries in Europe, North and South America and Asia develop, manufacture and supervise a range of innovative metal products. ZOLLERN supplies sophisticated solutions for diverse applications through its business units drive technology, plain bearing technology, foundry technology, mechanical engineering elements and steel profiles. Winch Gearboxes 3 Design and Construction Integrated Rope drum Rope fixing Rope grooves and Rope 10 Application Factor K 11...

Winch Gearboxes Potential applications: • mobile cranes • construction cranes and conveyors • material and working elevators • loading and cargo handling cranes • shipboard and deck cranes • rescue and wrecker salvage trucks • dockyard and harbour cranes • offshore cranes • container gantries • access platforms ZOLLERN Winch Gearboxes have proved highly successful under extreme operating conditions. Their principal features and most significant advantages are • compact dimensions • ease of maintenance • long operation life • high performance • modular design of gear unit • functional design...

Design and Construction ot Rope Winches with flange drive gearbox Design and Construction of Rope Winches with flange drive gearbox 2 stage planetary gearbox Ratios from i = 21 to 29 Gearbox mounted inside winch drum, Parking Brake and Hydraulic motor flange mounted externally. Input and output in opposite sense of rotation. 3 stage planetary gearbox Ratios from i = 45 to 147 Gearbox mounted inside winch drum, Parking Brake and Hydraulic motor flange mounted externally. Input and output in opposite sense of rotation. 2 stage planetary gearbox with spur stage input Ratios from i = 40 to 150...

Winch Gearbox Range Output torques: 1.750 to 1.500.000 Nm. Rope load: 17 to 1.950 kN. In calculating the rope load care must be taken to include reeving, hooks and an allowance for reeving efficiency (see page 13). Notes The output torques Tdyn max, listed on pages 14/15 are based on FEM Standards I/3rd edition/load conditions L2 running time classification T5, in accordance with Drive unit group M5. Ambient temperature +20 C° (FEM - Federation Europeenne de la Manutention). Gear Design Selected for optimum surface durability and bending strength; also for minimum sliding velocity,...

Design and Construction ot Rope Winches with flange drive gearbox 06 // 07 Mounting position Horizontal Fitting ZOLLERN’s winch gearbox is designed to be flange mounted in a fabricated steel structure. The drive end mounting flange reacts rope load and transmission torque, the non drive end reacts rope loads only and can be safely removes to facilitate fitting of the winch drum and gearbox. Backstop For special applications a backstop can be incorporated between the gear transmission and the parking brake. It operates as follows. Lifting of load • Parking brake closed • Backstop open...

Integrated Rope drum With normal grooves With special grooves With grooves of this kind the difficulties encountered in multi-layer winding on to grooves of the usual kind do not arise, as the crossover points of the rope in each layer always lie in the same section of the drum and the lift of the rope into the next layer is precisely defined. 8 and more layers can be accommodated without difficulty. Material for rope drum • ductile graphite iron (EN-GJS-400-15; EN-GJS-600-3) • steel (S355JO) Other material available on request 1,5 - d Raising wedge d This is cast on to the drum on the...

Integrated Rope drum / Rope fixing Rope fixing Wedge lock a) on the outside of the drum flange b) on the inside of the drum flange (for up to 2 rope layers only) c) within the barrel shell b) on the inside of the drum flange clamps. In an emergency the rope can be pulled out of the fixing without damage to either rope or drum. Rope Clamps a) on the outside of the drum flange

Rope grooves and Rope Rope grooves On cast drums cleanly cast and trimmed, and at the flash line carefully ground. On welded drums all edges are de burred and radiussed. Rope groove lead/pitch Right-hand lead on standard design Fleet angle To achieve acceptable rope winding • the deflection angle α must with special grooves be not less than 0,5° in order to prevent the rope from riding up the drum flange and to ensure that it is guided securely on to the next layer. • the deflection angle α must not exceed 1,5° in order to pre vent the rope in the first layer being pulled against the...

Rope grooves and Rope / Application Factor K for Winches 10 // 11 Running time classification Mean running time per day in hours, related to one year over 2 to 4 over 4 to 8 over 8 to 16 Life in hours 8 years, 200 days/year Drive unit class Application Factor K Classification guidance According FEM section I, 3rd edition, table T.2.1.3.5. Type of appliance Designation Particulars concerning nature of use (1) Erection cranes

Rope load Fnenn Fnom = (mLoad + mtack!e) g ' Efficiency of rope drives ^ 1 - (nR)n ns = (nR)j • nF = (nR)j • n • 1 - nR Meaning: i is the number of rope pulleys between the rope drum and pulley block or load (e. g. with the lifting gear on jib cranes) n is the number of rope strands in a single pulley block. A single pulley block is the total number of rope strands and rope pulleys for a single rope running on to a rope drum (see illustration) -0 | 2-stranded pulley block n = 2 nR is the efficiency of a single rope pulley nF is the efficiency of the pulley block nS is the efficiency of the...

Calculation of Rope load / Calculation of Rope diameters and drum diameters / Winding direction on Rope drums Winding direction on Rope drums Right-hand Rope pull overshot Rope entry Rope pull undershot Rope entry Left-hand Rope pull overshot Rope entry Rope pull undershot Rope entry