(1) wire rope hoist 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 pole windings and variable frequency conversion stepless speed or technique.
(2) structure should be able to meet a variety of working conditions such as: low headroom, twin-lift and other mounting methods; can be remotely controlled, insulated, corrosion proof, high temperature heat, explosion and other features of the product.
(3) designed to change the traditional round shape design with 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, instead of motor- reducer a roll arrangement, not only conducive to effectively improve the wire rope electric
lift hoist lifting height, and avoid high-speed shaft axis drive, can improve the smooth running and reliability, reduce manufacturing costs.
(4) using high-quality high-strength steel wire rope, according to GB3811-1983 standard requirements, to meet the tensile strength safety factor under the premise of minimizing the wire diameter, roll diameter compatible with the rope diameter ratio of the diameter of wire rope and pulley diameter ratio, in order to facilitate the whole structure and reduced 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, 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) electric wire rope hoist motor using 2,4,6-pole conical rotor motor for a variety of different conditions.hoist equipment 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, 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.
(7) increased electrical protection measures, in addition to the upper and lower limit protection, it should also increase the overload protection (individual cases considered underrun 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.
(8) wire rope hoist high wear resistance, high strength rope guide rope guide materials and equipment performance has been the lead rope hoist many domestic enterprises to explore the subject, at present, China has mastered the part of the successful experience.
(9) Other components such as wire rope hoist hooks, trolleys and other design into groups to consider and versatility.
(10) to improve matching pieces such as wire rope, bearings and other standard parts quality.
rope hoist raise contactors, transformers and other electrical control components of the mechanical life and electrical life, electric control box shape design plug body should consider coordinating with gourds.
(12) wire rope hoist focus on machine paints, packaging appearance quality.