Dedicated retractable tensile drum cable for tunneling machine

NegotiableUpdate on 01/09

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Nature of the Manufacturer: Producers

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Overview

The specialized retractable tensile drum cable for tunneling machines is a supporting cable for underground mining equipment in coal mines. It adopts a polyurethane double sheath+Kevlar tensile braided layer structure design, and has excellent anti torsion, anti winding, and wear-resistant characteristics, which can adapt to the frequent retractable working conditions of tunneling machines. Strictly in compliance with the MT818 mining safety standards, the core wire conductor is made of high-purity oxygen free copper, which has stable conductivity and can effectively resist harsh environments such as humidity, dust, and mechanical impact underground. Its flexible structure can significantly reduce stress damage during the retraction process, extend the service life of cables, and is widely used in the power and signal transmission systems of cantilever and continuous tunneling machines.

Product Details

Dedicated retractable tensile drum cable for tunneling machine

1、 Product performance

Tensile and torsional resistance: Built in Kevlar tensile braided layer, capable of withstanding a tensile force of ≥ 20kN, meeting the working conditions of frequent retraction and twisting of the excavator drum, and eliminating the risk of core wire breakage.
Weather resistant and wear-resistant: The polyurethane (PUR) double sheath design is wear-resistant, oil resistant, acid and alkali resistant, and can operate stably in environments ranging from -40 ℃ to+90 ℃. It is suitable for harsh underground environments such as humidity, dust, and mechanical impact.
Electrical stability: Insulation resistance ≥ 100M Ω· km, withstand voltage of 3.7kV/5min without breakdown, low power transmission loss, and no delay in signal transmission.
Anti fatigue winding: After 10000 cycles of winding tests, all performance indicators still meet the standards, and the service life far exceeds that of ordinary cables.

2、 Core materials

component	material	advantage
conductor	High purity oxygen free copper wire (multi stranded)	Excellent conductivity, strong flexibility, and resistance to bending
insulating layer	Cross linked polyethylene (XLPE)	Good insulation performance and high temperature resistance level
tensile layer	Kevlar fiber woven layer	High strength tensile strength, lightweight, does not affect cable flexibility
Sheath layer	Polyurethane (PUR)	Wear resistant, oil resistant, weather resistant, and resistant to mechanical impact

3、 Technical parameter table

parameter category	technical indicators
rated voltage	0.6/1kV (power core); 450/750V (control core)
Conductor cross-section	Power core: 16~120mm ²; Control core: 1.5~6mm ²
Core wire combination	Conventional type: 3 × 70+1 × 35 (power)+12 × 1.5 (control)
bend radius	Static ≤ 10 times the outer diameter of the cable; Dynamic ≤ 15 times the outer diameter of the cable
Protection level	IP65 (intact protective sheath)
execution standard	MT/T 818-2009 "Coal Mine Cables" GB/T 12706-2020

Dedicated retractable tensile drum cable for tunneling machine

4、 Product Usage

Specially designed for cantilever tunneling machines and continuous tunneling machines in coal mines, used for equipment power supply and control system signal transmission. It can be directly matched with drum retraction mechanism, suitable for underground tunnel excavation, tunnel construction and other scenarios. It can also be used for other heavy mobile equipment that requires frequent retraction.

5、 Packaging method

Inner packaging: The cable is wrapped around a steel I-wheel (diameter 800~1200mm), and the outer layer is wrapped with plastic film to prevent moisture and dust.
Outer packaging: The I-shaped wheel is fixed with steel strip and labeled with product certificate, model specifications, production date, inspector information, etc.
Transportation requirements: Avoid direct sunlight, rain, and severe collisions, and strictly prohibit mixing with sharp objects or acidic or alkaline substances.

6、 Product advantages

Strong adaptability to working conditions: customized for the winding and retraction conditions of tunneling machine drums, with anti torsion and anti tensile performance far exceeding that of general cables.
Safety compliance: Through coal safety certification (MA certification), it meets the safety standards of mining equipment and is safe for underground use.
Ultra long lifespan: Designed for wear resistance and fatigue resistance, the service life is 3-5 times that of ordinary mining cables, reducing equipment maintenance costs.
Easy installation: The flexible structure is convenient for winding the drum, and can be directly installed and adapted without additional adjustments.

7、 After sales service

Quality assurance: The product has a 12-month warranty period, and any damage caused by product quality issues during the warranty period will be replaced with a new product free of charge.
Technical support: Provide free installation guidance, design of working condition adaptation solutions, and 24-hour technical hotline response.
After sales response: Upon receiving a customer repair report, arrange for technical personnel to arrive at the site within 48 hours to handle the issue.
Customized service: Cable products with special core wire combinations and lengths can be customized according to the customer's tunneling machine model and drum parameters.
The product price is for reference only. If you need to inquire, please contact the homepage sales~

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