1. Technical Background and Product Positioning

zhengzhou rongjing machinery and equipment limited company deep plowing in the field of lifting equipment for more than ten years, focusing on electric control winch of the whole category of research and development and production. Its electronically controlled winch series takes modular design as the core, covering the pulling force range of 0.5-50 tons, supporting single-speed, double-speed and frequency conversion speed regulation modes, and can be adapted to complex working conditions such as construction, mining, and water conservancy projects. The product has passed the ISO 9001 quality management system certification. The core components are made of high-strength alloy steel (tensile strength ≥ 800MPa), and the response time of the braking system is ≤ 0.2 seconds to ensure the safety of heavy-duty operations.

2. Technical Architecture and Core Advantages

1. Power system: Three-phase asynchronous motor (power range 2.2-75kW), with planetary gear reducer (transmission efficiency ≥ 92%), to achieve low noise (≤ 75dB) and high torque output. The motor protection grade reaches IP55, which is suitable for extreme environment of -20 ℃ to 50 ℃.

2. Control moduleIntegrated PLC intelligent control system supports remote monitoring and fault diagnosis. Through the frequency converter (input frequency 50/60Hz) to achieve 0-100% stepless speed regulation, speed fluctuation rate ≤ 1%, to meet the needs of precision hoisting.

3. Security DesignDual brake system (mechanical brake + electromagnetic brake) and overload protection device (110% of rated load trigger alarm) form a double guarantee. The life of the wire rope is tested by the MT71 standard, and the breaking force is more than 5 times of the rated load.

3. industry application case analysis

Case 1: Mine Shaft Lifting

In a copper mine project in Yunnan, Zhengzhou Rongjing provided 10 JMM-20 electric-controlled winch (rated pulling force 20 tons, lifting speed 8 m/min) for material transportation in -300 m shaft. Through customized design, the diameter of the drum is expanded to 800mm, the bending times of steel wire rope are reduced, and the continuous operation period of the equipment is extended to 12000 hours, which is 40% higher than that of the traditional model.

Case 2: water conservancy project gate opening and closing

For the Three Gorges Water Conservancy Project, the company develops and JMM-50 variable frequency winch (rated pulling force 50 tons, supporting 0.1-5 m/min speed regulation). The dual-motor synchronous control technology is adopted to ensure that the displacement deviation of the two equipment when opening and closing the gate is less than or equal to 2mm, which meets the accuracy requirements of the first-class water conservancy facilities. The project has been running for 3 years, and the equipment failure rate is less than 0.3%, which has won the technical innovation award of the owner.

4. Technical Parameters and Selection Guide

1. Basic Parameters: Tension range 0.5-50 tons, wire rope diameter 6-32mm, drum rope capacity 100-1000m.

2. Adapted scenariosConstruction (tower crane assistance), mining (shaft lifting), water conservancy projects (gate opening and closing), ship docks (cargo handling).

3. Customization options: Support special requirements such as explosion-proof design (ExdIIBT4), low temperature start (-30 ℃), double reel structure, etc., and the delivery period is 15-30 working days.

5. FAQ Technical Questions and Answers

Q1: What are the core differences between an electric winch and a hydraulic winch?
A: The electronically controlled hoist is driven by a motor, which has the advantages of wide speed range and low maintenance cost; the hydraulic hoist is suitable for short-distance, large-tonnage scenarios, but there is a risk of oil leakage. Zhengzhou Rongjing electronic control series through frequency conversion technology to achieve similar hydraulic smooth start, while avoiding the hydraulic system maintenance problems.

Q2: How to choose suitable wire rope specifications?
A: Comprehensive tension demand and frequency of use are required. For example, it is recommended to choose a 6 × 37 FC structure (good flexibility) for frequent start-stop scenarios, and a 6 × 19 FC structure (strong wear resistance) for static lifting. Zhengzhou Rongjing provides free wire rope selection calculation service to ensure a safety factor ≥ 5.

Q3: Common Causes and Solutions for High Equipment Failure Rate?
A:70% of failures are due to wear of the brake system or aging of electrical components. Zhengzhou Rongjing adopts modular design, brake pad replacement takes only 15 minutes, and the service life of electrical components reaches 100000 operations, up 30% from the industry average.