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Model CD1 wire rope electric hoist can be used in the domestic market
2013-12-27 by xiugai
Our model CD1 wire rope electric hoist can be used in the domestic market more than 30 years, with its successful aspects, but also has many shortcomings, such as: (1) the structure design of the structure of the model CD1 wire rope electric hoist design though the TV model wire rope electric hoist has greatly improved, but the poor beautiful shape and circular structure is easy to install and transport, the change of the shape of the limitations of seriously hindered the base type. And foreign wire rope electric hoist, much to the square structure design, both beautiful and ease of installation, transportation, also can well adapt to the modular design, facilitates the combination of the base type and transformation, greatly widened the scope of wire rope electric hoist. (2) the series problems less varieties and specifications. CDl type wire rope electric hoist lifting weight only 0.5 t, 1 t and 2 t, 3 t, 5 t, 10 t6, coverage of the lifting height is 6 to 30 m, lifting speed: 1-5 t single speed is 8 m/min, double speed for 8/0.8 m/mini 10 t single speed of 7 m/min, double speed for 7/0.7 m/min. Although some domestic manufacturers developed on the basis of 10 t 16 t, 20 t expansion series of large-tonnage electric hoist, but still could not form a complete and reasonable steel wire rope electric hoist series products, with foreign lifting weight range of 0.25-80 - t and a variety of lifting height and lifting speed than there is a big gap. (3) the level of work model CD1 wire rope electric hoist is not classify the level of work, don't adapt to the actual working condition, in most cases caused by unreasonable use. According to the classification rules of the new job level, CDl type wire rope electric hoist work level for the M3, and foreign wire rope electric hoist can adapt to the working level range for the M3 to M6. Type (4) the transformation of electric hoist model CD1 wire rope pulley block structure and the ratio of the single (0.5 t - 5 t pulley block rate is 2/1; 10 t ratio for 4/2). Only hung and fixed installation way, change is little, can development function is low. And foreign wire rope electric hoist pulley block structure and the ratio combination diversity, installation method in addition to the suspension and stationary, and low headroom installation, double lifting point form and other special-purpose wire rope electric hoist. The CDl type wire rope electric hoist in these aspects basic is blank. (5) form a complete set of motor CDl wire rope electric hoist supporting the conical rotor motor, single speed for 4 pole, double speed for 1/10 composite aircraft, and foreign wire rope electric hoist motor USES the 2 pole motor, two-speed adopts double winding and variable pole type, simple structure, small volume, light weight, so beneficial to lower the manufacturing cost. In addition, CDl type wire rope electric hoist motor in the insulation and protection grade and noise compared with foreign gourd gap is still large. Reducer (6), CDl type wire rope electric hoist reducer manufacturing precision and low transmission efficiency, large noise, gear parameters design is not reasonable, especially reflected in effectively improve the bearing capacity and equal strength of gear and gear pair at all levels. CDl type (7) security protection measures only on wire rope electric hoist, limit protection, overload protection. Wire rope electric hoist and abroad in addition to the above protection function, also has the fault phase, lack of phase, over heat protection, brake system protection. (8) electrical control CDl type wire rope electric hoist electric cabinet appearance, poor coordination, the service life of electrical components is low, high failure rate. (9) parts design CDl type wire rope electric hoist crane, electric car device key parts and components, such as group design and interchangeability is poorer, and the structure is relatively heavy.
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