Project Background

Zhengzhou Coal Mining Machinery Group Co., Ltd., as a leading coal machinery manufacturer in China, has long been committed to improving product quality and production efficiency. However, with the expansion of production scale and the increasing complexity of products, traditional inspection methods can no longer meet the demand for high-precision, high-efficiency testing.

In particular, key components such as joint seats, copper liquid tubes, and valve seats require a non-destructive inspection tool that can penetrate deep into internal structures and intuitively display defects. Against this backdrop, the JOINWE industrial videoscope emerged as an essential tool helping Zhengzhou Coal Mining Machinery Group address its inspection challenges.

Application Scenarios & Challenges

1. Sampling Inspection of Joint Seats

The joint seat is a critical connecting component in hydraulic supports, and its quality directly affects system stability. With a sampling standard of 400 pieces per batch, the inspection equipment must identify tiny defects quickly and accurately. Traditional methods are time-consuming, labor-intensive, and prone to missed detections.

2. Copper Tube Inspection

The copper liquid tube has an inner diameter of only 10 mm and contains bends with varying lengths, creating significant inspection difficulties. The equipment must be flexible and provide high clarity to navigate narrow spaces and capture every detail.

3. Deep-Hole Inspection of Valve Seats

The valve seat is integrated with the copper tube, and the internal condition of the 44 mm deep hole directly impacts valve performance. Effectively observing and evaluating this region is crucial for maintaining product quality.

Solution

To overcome these challenges, Zhengzhou Coal Mining Machinery Group introduced the JOINWE Q-Series HD industrial videoscope.

The device features a 4 mm front-mounted LED light source and a 2-meter insertion tube, enabling easy access to confined spaces. Its mechanical 360° articulation ensures full-view inspection with no blind spots.

High-definition image transmission allows operators to monitor internal structures in real time and accurately pinpoint defects.

Application Results

1. Improved Inspection Efficiency

Compared with traditional methods, the inspection time for joint seats has been significantly reduced, with accuracy notably enhanced.

2. Enhanced Detection Precision

The combination of high-definition imaging and flexible control ensures that tiny cracks, deformations, and other defects inside copper tubes are clearly identified, providing reliable guidance for subsequent maintenance.

3. Optimized Production Process

Through regular preventive maintenance using the videoscope, Zhengzhou Coal Mining Machinery Group has successfully reduced failure rates, extended equipment lifespan, and achieved a remarkable improvement in overall production efficiency.

Conclusion

The application of the JOINWE industrial videoscope at Zhengzhou Coal Mining Machinery Group not only resolves long-standing inspection challenges but also injects new momentum into the company’s high-quality development. Moving forward, both parties will continue to deepen cooperation, explore more intelligent inspection solutions, and jointly promote China’s manufacturing industry toward higher standards.

Shenzhen JOINWE is a technology-driven company specializing in the development, production, and sales of oil-condition sensors, oil analysis and testing equipment, and industrial videoscopes. With more than 10 years of experience in oil-condition monitoring, the company remains firmly committed to a customer-first philosophy and to continuously creating value for our clients. Through ongoing improvements in product quality and performance, we aim to exceed expectations with every delivery.

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