Mining bend-resistant dragging cable and manufacturing method

Abstract

The invention discloses a mining bend-resistant dragging cable and a manufacturing method. The mining bend-resistant dragging cable comprises a composite reinforced outer sheath, wherein a composite non-woven fabric is arranged on an inner layer of the composite reinforced outer sheath; totally three power cable cores are arranged; each power cable core is formed by combining a power cable core conductor, a composite non-woven fabric, an insulating layer, a semi-conductive layer and metal fiber mixed woven shielding layer; a composite non-woven fabric layer is arranged outside the power cable core conductor; the insulating layer is wrapped outside the composite non-woven fabric; the semi-conductive layer and the metal fiber mixed woven shielding layer are sequentially arranged outside the insulating layer; the control cable core comprises three control cable core conductors and a rubber bracket; an insulating layer is arranged outside each control cable core conductor; the three control cable core conductors are sequentially and uniformly arranged on the rubber bracket; a single composite non-woven fabric layer is overlapped on the outer layer of the rubber bracket; a rubber sheath material is wrapped outside the composite non-woven fabric; ground cable cores are arranged at middle gap positions formed between the power cable cores and the control cable cores.

Description

technical field [0001] The invention relates to a mine-used bending-resistant drag cable and a manufacturing method thereof. Background technique [0002] As we all know, mining cables are widely used in the coal mining industry, and their market prospects are closely related to the development prospects of the coal industry. [0003] my country is rich in coal reserves, and its production and reserves rank first in the world. With the continuous introduction of national coal production safety policies, the future coal mine cable product manufacturing engineering project will be used as a safety guarantee equipment in the coal mining industry. Large-scale electromechanical equipment for mining will be widely Applied to the coal mining industry, all kinds of mining cables matched with it will have a broader market prospect and can obtain good economic benefits. [0004] Mining rubber sheathed cables are not only an indispensable part of industrial enterprises and construction...

AI Technical Summary

Problems solved by technology

[0006] With the continuous improvement of the production level of comprehensive mechanized coal mining in coal mines, comprehensive coal mining equipment is developing towards high power and high capacity, and the power supply load of the coal mining face has increased significantly. Poor abrasion performance and poor strength of the control wire core may easily cause the control wire core to break during use and affect the normal production

[0007] At present, the control wire core of the shearer rubber-sheathed soft cable matching the shearer is easy to break and the service life is short, which is a key factor restricting the production efficiency of the shearer. The control wire core in the shearer cable mainly plays a role The function of signal monitoring, due to frequent bending, stretching and other mechanical stresses during the operation of the cable, it is easy to cause the breakage of the control wire core. Once the control wire core breaks, it will lose the monitoring protection function and cause the equipment to stop operation, which seriously affected the use of users and caused great losses to users.

Therefore, the control wire core of the shearer cable is easy to break, and the problem of short service life has always been a problem that plagues the coal industry and cable companies. Although the coal industry standard has made special regulations on the materials used for the control wire core, it has not fundamentally To solve the problem above, aiming at the quality problem of the control wire core in the rubber-sheathed flexible cable of the coal mining machine, we visited the users many times, and went down to the mine to observe the use environment and usage method of the rubber-sheathed flexible cable of the coal mining machine. During the process, the partial bending radius of the rubber-sheathed soft cable of the coal mining machine is far smaller than the bending radius of the cable specified in the standard. The conductor is much smaller than the conductor cross section of the cable main core, which makes the control core easy to break

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