Electric wire rope hoist five areas that need improvement
The gap between domestic and foreign electric hoist quality in terms of technology or shrinking, many domestic electric chain hoist and manual hoist is gradually out of the country,hoist equipment the following summary of the current status of wire rope hoists the following five areas that need improvement.
1, supporting the motor
CD1 type electric hoist supporting the conical rotor motor, single speed 4-pole, double-speed of 1/10 of the picture plane, and foreign wire rope hoist motor with 2 pole motor, two-speed dual windings and pole type, so simple structure, small size, light weight, help to reduce manufacturing costs. In addition, CD1 electric hoist matching motor in insulation class and degree of protection and noise as compared with foreign hoist the gap is still very large.
2, reducer security measures electrical control
CD1 type electric hoist gear reducer manufacturing precision and low efficiency, noise, gear design parameters is not reasonable,hoist and trolley especially reflected in the carrying capacity and improve levels of gears and gear pairs equalization between the intensity.
3, security measures
CD1 electric hoist only, the lower limit protection, overload protection. While foreign wire rope hoist addition to the protective function, but also has the wrong phase, phase, thermal protection, multi braking system protection.
4, the electrical control
CD1 type electric hoist electric control box appearance, poor coordination, electrical component life low failure rate.
5, component design
CD1 electric rope hoist hook, electric trolley system and other key components, a set of design and interchangeability is poor, and the structure is relatively bulky.