Dali Electric recommends
The technical difficulty in the design and selection of cable drums is to ensure the synchronization between the winding speed and the moving speed of the equipment, while also ensuring that the tension on the cable during winding is moderate. Therefore, the following factors should be comprehensively considered in the design and selection of cable drums:
1.Cable specifications and types
The cross-sectional area of the cable ranges from 1.0 to 240mm2. The outer diameter of the cable directly affects the axial dimensions and power requirements of the reel. When the cable cross-section exceeds 35 mm2, non-electric drums should not be selected (counterweight type can be relaxed to 50mm2). Flat cables can only use axially single-row reels. The cable should be YCW type (power cable) and CEFR type (control signal cable), etc., which are relatively soft and have certain tensile strength. The outer diameter and unit weight of the cable should be as accurate as possible.
2. Winding length
It affects the radial dimensions and power requirements of the reel. The longer the length, the higher the power requirement. Non-electric cable drums are difficult to achieve large-stroke winding. The ground power anchor position also directly affects the selection of cable drums. Common power anchor positions are end power supply and midpoint power supply. Midpoint power supply cannot choose non-electric magnetic coupling type (JQC series).
3、Equipment moving speed
It affects the motor power and transmission ratio of electric cable drums. When the equipment moving speed exceeds 60 meters per minute, variable frequency control type (BP series) should be selected.
4、Installation height
It affects the motor power of electric cable drums. The higher the installation height, the greater the power requirement. During installation, the design requirements must not be exceeded.
[Summary] The four parameters of cable specifications and types, winding length, equipment moving speed, and installation height are the basis for the design and selection of cable drums. They should be comprehensively considered. At the same time, the structure and layout of the cable drum should also be considered to meet the actual working conditions.
ST cable drum
The cable drum is a mechanical device that uses a spiral spring as power and automatically winds the cable by utilizing the spring's stored energy. It has the characteristics of simple power supply, safe and reliable operation, and moderate cable tension. There are three structures: internal slip ring type, external slip ring type, and cantilever type. Among them, the internal slip ring type has a compact structure and beautiful appearance; the external slip ring type is convenient for maintenance; the cantilever type is suitable for winding longer and heavier cables.
Structural features:
1. Uses spiral spring as power, does not consume electrical energy, and is reliable in operation;
2. Uses collector slip ring - carbon brush structure to transmit electrical energy, reliable in operation;
3. Equipped with a reversible mechanism to avoid the drum reversing and breaking the spring
Note: The above information and technical parameters are compiled and released by Yangzhou Dali Electric Co., Ltd.
