The future of domestic wire rope hoist

   (1) wire rope hoist shape design
    Change the traditional circular design, a square structure, the modular design, increasing the versatility of components, from the original arrangement of the motor of an intermediate shaft in the form of a gear of the rolls, the rolls instead of motor-reducer The arrangement not only conducive to effectively improve electric  hoist and trolley  lifting height, and avoid high-speed shaft axis drive, can improve the smooth running and reliability, reduce manufacturing costs. Increase the magnification range of pulleys, improve range of stand-alone use.
    (2) wire rope hoist motor
    Using 2,4,6-pole conical rotor motor for a variety of different conditions. Motor insulation class F class and should be raised to 11, protection class increased to IP54; motor overheat protection device settings; motor should be designed effectively improve the useful power,wire rope winch buck ability and starting and braking capabilities; improve motor design temperature, give full play to the potential of the motor; motor noise in addition to the design, processing, manufacturing to improve accuracy, it should also be considered from the design to reduce electromagnetic noise and wind noise channel eddy current measures.
    (3) Series is designed to rationalize
    Recommended parameters: Capacity from 0.25-80t, lifting height 6-63m, with fewer base model covering the entire series. Lifting speed diversification Recommended values: single speed 8m/min, 10m/rain, 12.5m/min; dual-speed 1/10, 1/3, 1/4 ratio change. Two-speed programs should take picture machine, double windings and pole type, or using frequency conversion stepless speed technologies. Design reference GB3811-1983 "Crane design specifications" working-level division, working-level coverage will be expanded to M3-M6.
    (4) using high-quality high-strength steel wire rope
    According to GB3811-1983 standard, to meet the safety factor of the tensile strength of the premise, to minimize the wire diameter, the use of roll diameter adapted to the diameter of the rope and pulley ratio to the ratio of the diameter of wire diameter in order to facilitate the entire narrow machine structure and weight.
    (5) Optimized gear designed to enhance the carrying capacity of the gear
    Gear can be 40Cr or 42CrMn, 40MnB material, quenched and hardened or nitrided, the original material used 20CrMnTi or 20MnTiB Although the flexural strength of the gear and the contact strength than ideal, but affected by domestic processing level based, gear low precision,manual hoist carburizing quenching deformation difficult to control, after the sequence nor grinding process, it is inevitable there is gear noise, low efficiency. New materials and heat treatment method has many domestic manufacturers to promote.
    (6) Electrical protective measures to increase wire rope hoist
    In addition to the upper and lower limit protection, it should also increase the overload protection; wrong phase, phase, voltage protection; hook retaining rope protection. Development of multi-function models such as brake: Dual brake (brake wheel motor brake + high cone axis compensation braking); three brake (brake wheel brake cone axis compensation brake + + high volume cylinder safety gates). According to user needs increased lifting height, load digital display o.