— Case Study of KLD Intelligent Composite Cable Winch System

I. Project Background and Core Challenges

In high-methane environments within coal mines, real-time methane concentration monitoring is a critical measure for ensuring safe production. With advancing automation, robotic inspection systems are increasingly replacing manual labor in high-risk underground areas for methane detection.

However, robots face a key technical challenge during long-distance underground operations:

Communication and power supply stability

Continuous operation capability over ultra-long distances

High explosion-proof safety requirements

Orderly cable retraction/extension and anti-tangle control

Particularly when operating in Class I explosion-proof zones, equipment must incorporate explosion-proof drive systems. Additionally, mine tunnels extend for considerable depths, with some inspection distances reaching thousands of meters. Conventional winch equipment cannot meet the requirements for 5000-meter-class cable capacity and high-speed retraction/extension at 60m/min.

The client's core pain points are summarized as three key requirements:

Storage of ultra-long cables and rapid retrieval/retraction

Explosion-proof safety ratings meeting underground coal mine standards

Stable cable deployment and reliable signal transmission during continuous operation

To address these challenges, KLD provides a customized intelligent composite cable winch system.

II. Core Technical Requirements

Based on project discussions, the client specified the following mandatory criteria:

Suitable for Class I explosion-proof zones in underground coal mines

Explosion-proof servo motor drive

Drum capacity for 5000 meters of composite cable rope

Retrieval/deployment speed ≥ 60 meters/minute

Capable of extended continuous operation

Drum equipped with slip rings to support composite cable operation

Must incorporate reciprocating screw rope-laying mechanism for orderly rope arrangement

These requirements necessitate a high-safety-level, ultra-long-stroke, intelligent-control composite system engineering solution rather than a standard winch product.

III. Customized Solution (KLD Engineering Implementation Plan)

Kailude KLD designed an intelligent composite cable winch system for this project, featuring core components including:

1️⃣ Explosion-Proof Servo Drive System

Utilizes explosion-proof servo motor drive structure to meet Class I explosion-proof zone requirements in coal mines.

Servo drive advantages:

Rapid start/stop response

Precise speed control

Supports continuous long-term operation

Stable output without impact

Ensuring stable and controllable cable tension during underground robot operations.

2️⃣ Extended-Travel Drum Design

The drum features heavy-duty construction with:

Capacity for 5,000 meters of cable

Reinforced drum support structure

High-strength steel plate welded fabrication

This extended travel design resolves long-distance inspection challenges underground, eliminating frequent base machine relocation.

3️⃣ High-Speed Continuous Retrieval System

System retrieval speed reaches:

≥60 meters/minute

Supports extended continuous operation.

This enables:

Rapid robot deployment

High retrieval efficiency

Swift emergency evacuation response

In complex underground environments, speed equals safety assurance.

4️⃣ Drum Slip Ring System

Internal slip ring structure adapts to composite cable rope operation.

Functions include:

Stable signal transmission

Continuous power supply

Prevention of cable entanglement damage

Reliable connection of power and signals.

5️⃣ Reciprocating Screw Cable Laying Mechanism

Utilizes a reciprocating screw cable laying system to achieve:

Orderly cable arrangement

Reduced cross-cable compression

Prevention of tangled or jumping cables

This system is particularly critical for managing ultra-long cables exceeding 5000 meters.

IV. Core Technical Parameters

(All parameters generated based on customer-provided data)

V. Design Highlights Analysis

✅ Explosion-Proof Safety Assurance

Utilizes explosion-proof servo motor drive, meeting underground coal mine safety standards.

✅ Ultra-Long-Distance Operational Capability

5000-meter cable capacity represents an ultra-large stroke level within mining robot systems.

✅ High-Speed Retrieval Efficiency

≥60m/min retrieval speed enhances operational efficiency.

✅ Precision Cable Laying Structure

Recirculating ball screw mechanism ensures orderly cable arrangement, minimizing wear risks.

✅ Slip Ring System for Signal Transmission

Guarantees stable power and signal delivery during robotic operations.

VI. Applicable Scenarios

This system is suitable for:

- Underground methane detection robots in coal mines

- Automated inspection systems in coal mines

- Remote monitoring operations in high-methane zones

- Long-distance cable-powered robotic systems

Particularly suitable for Class I explosion-proof environments.

VII. Project Value & Summary

Through this project implementation, the client achieved:

Robotic replacement of manual entry into hazardous zones

Enhanced long-distance inspection coverage

Significantly improved cable retrieval efficiency

Explosion-proof rating compliant with underground specifications

KLD's intelligent composite cable winch system balances speed, capacity, and stability while prioritizing safety.

This project's success validates KLD's engineering customization capabilities in ultra-long-stroke cable winch systems.

VIII. Frequently Asked Questions (FAQ)

Q1: Is this umbilical winch suitable for Class I explosion-proof zones in coal mines?

Yes. The system employs explosion-proof servo motors, making it suitable for Class I explosion-proof environments.

Q2: What is the maximum cable capacity?

The drum holds up to 5000 meters of composite cable rope.

Q3: What is the winding/unwinding speed?

The design speed reaches **≥60 meters per minute.

Q4: Does it support prolonged continuous operation?

Yes, the system supports extended continuous operation to meet underground inspection requirements.

Q5: How is orderly cable arrangement ensured?

A reciprocating screw cable arranger maintains organized winding, minimizing tangles and cross-compression.

Q6: Does it support composite cable signal transmission?

A slip ring structure is integrated within the drum to ensure stable transmission of both power and signals via composite cables.