Drum cables are widely used due to their advantages such as wear resistance, cold resistance, and UV protection. They are widely used in vertical lifting devices such as large tower cranes and open-air elevators for construction. When purchasing such a sophisticated machine, you must choose a manufacturer with high credibility, so that you can buy high-quality reel cables. Then you must strictly abide by the installation specifications when using it, so as to ensure the safety and reliability of the next operation. conduct. So what are the installation specifications? Which manufacturers can be recommended? What are the causes of core breakage and cracking of reel cables?

Reel cable is so named because the cable is used on a drum or winding system.

In addition to electrical properties, fire resistance, and other basic requirements to match the equipment, the most important basic characteristics of reel cables are: they can withstand long-term bending movements, extremely excellent tensile properties, and pressure resistance. Especially the excellent tumbling pressure resistance and wear resistance, there are currently very few manufacturers who can understand what "tumbling pressure resistance" is. Since the working principle of the reel is rotation, take-up, and pay-off, the reel itself generally retracts and unwinds with constant tension, which has higher requirements for the tensile strength of the cable. In addition, the retracted cable is single-pass or multi-pass laminated. , the cable itself should have better resistance to extrusion. Deformation of the cable core due to extrusion is inevitable. The problem is that all deformations need to be studied to minimize their impact on the cable. The basic problems of current reel cables are core breakage and The sheath cracked and the tensile wire rope squeezed through the insulation layer, causing the cable work to stop. Therefore, the flexibility of the conductor material of the drum cable, the tensile aging resistance of the insulation material, the combination of cores, the matching of auxiliary materials, the protection of winding or inner sheath, shielding requirements and the material and requirements of the outer sheath, These are essentially different from general flexible cables.

Installation specifications:

1. In order to avoid rolling the cable drum, we should transport the cable directly to the site.

2. The cable tray must be unfolded before installation. During the unfolding process, it can only be removed from the top of the cable tray.

3. If there is not enough space to place the entire length of the cable, the distance between the installation cable drum and the equipment drum should be as long as possible to avoid S-bends and other deviations during laying. incline.

4. Large-proportion cable clamps must be used to secure the ends of the cables to avoid squeezing the cables.

5. When the cable is completely pulled out, leave at least two turns of the cable on the equipment cable drum.

6.? During operation, the cable will cross the entry point. If the entry point is under the ground, a compensating pulley of appropriate diameter must be used, with a funnel-shaped guide device above it. Make one or two turns of cable.

7. Protect cables from external damage during installation and operation.

8. Check the cable support frame

9. Appropriate cable pulleys and pick-up trucks should be used to move cables to the installation site. In exceptional cases, the cable drum must be turned in the direction of the arrow.

10. The cable must be wound on the equipment drum without twisting. Please use a cable winding equipment. For cables with an outer diameter less than 21.5mm, the inner bending diameter = 10*cable diameter. For cables with an outer diameter greater than 21.5mm, the inner bending diameter = 12.5*cable diameter

11. Do not overtighten or Pull up the cable on a device that is too loose. During the unwinding process, the cable can only be removed from the top of the cable drum.

12. Make sure the cables are not twisted.

13. Adjust the cable so that the cable hangs loosely in the middle of the cable support frame.

At present, the problems of broken core and cracking of reel cables are the main problems that bother users:

1. Conductor breakage

Causes: poor quality, stranding Improper fit and irregular combination of conductor cores;

2. Conductors penetrate into adjacent cores

Cause: Some conductors are embrittled and broken, resulting in conductor rigidity;

3. The copper wire of the shielding layer is inserted into the core of the wire

Causes: a. Improper handling of copper wire joints when braiding or winding; b. The cable has poor resistance to twisting, and the braiding layer twists off on its own ;?c. Poor hardness of the insulating material;

4. The outer skin is cracked and worn

Reason: poor material selection and lack of workmanship, poor oil resistance and weather resistance.

As for conductor heating, insulation breakdown, poor anti-interference effect, etc., these are not technical issues but issues of the practitioner’s ethics;

In fact, the design and manufacturing of drum cables , not only imitating imports (imports also have unreasonable designs) and looking at sample manufacturing at the primary cognitive level, but also having an in-depth understanding of the reel principle and actual application environment, so that the cable quality at least has a good start.

Manufacturer recommendation

Shandong Yatai Heavy Machinery Co., Ltd.

Reel cable, drum cable with wire rope,

Minimum batch size: 1 piece

Price: 1,300 yuan

Shanghai Dingbai Wire and Cable Co., Ltd. supplies reel cable

Price: 5 yuan/meter

RVV-NBR Reel Cable

Price: 6.9 yuan

Through the above detailed introduction, I believe that everyone will be familiar with the roll cable Now that we have a deeper understanding of the installation specifications of drum cables and the problems of core breakage and cracking of drum cables, the editor here reminds everyone that the above manufacturers are for your reference only, and you can learn more about more specific information online. Compared with ordinary rubber-sheathed cables, drum cables have much higher bending performance. They can bend and move with the equipment as they continuously unwind and retract cables. However, if you want to extend the service life of drum cables, you must first choose high-quality cables. When operating reel cables, technicians must have a good understanding of reel cables, so as to ensure that no mistakes will occur during operation, thereby ensuring that the winding work is not affected and the service life is extended.

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