I. Technical Architecture: Modular Design Supports Full Category Coverage

Zhengzhou Rongjing's electric control winches adopt a modular design concept, with core components including motors, reducers, brakes, drums, and electric control systems, enabling rapid assembly and model expansion through standardized interfaces. Taking the JM series electric control winch as an example, its motor power ranges from 5.5 kW to 75 kW, with drum diameters selectable from 200 mm to 800 mm, supporting dynamic adjustment of single-rope pulling forces from 5 tons to 50 tons. The reducer employs hardened gear transmission, achieving a transmission efficiency of over 95%. Paired with a hydraulic disc brake, the braking response time is ≤0.2 seconds, ensuring safe shutdown under heavy-load conditions.

II. Core Strengths: High Adaptability and Customization Capability

1. Multi-condition adaptation technologyFor construction scenarios, the electric control system supports variable frequency speed regulation, with an adjustable speed range of 0.5-15 m/min to accommodate different work rhythms such as concrete pouring and steel bar hoisting. In mining scenarios, the reinforced drum design (with a 30% increase in wall thickness) and IP55-rated motors meet the requirements for long-term operation in harsh environments such as dust and humidity.

2. Customized service processTaking a certain ship dock project as an example, the client needed to install a winch in a confined space, with a requirement for a pulling force of 30 tons and a speed of 8 m/min. The Rongjing team achieved customized delivery through the following steps:

STEP1On-site survey confirmed that the installation space dimensions are 1.2m × 0.8m × 1.5m, and a compact vertical structure was designed;

STEP2Model selection and matching: Adopt a JM30 motor (with a power of 37kW) and a double-drum winch to achieve the target speed by optimizing the gear ratio;

STEP3Customized electronic control system, integrating PLC control modules, supporting remote monitoring and fault warning, and compatible with customers' existing IoT platforms.

III. Technical Parameters and Performance Verification

1. Basic Parameter Table：

2. Reliability test dataDuring the continuous load test, the JM30 winch operated for 500 hours at 80% of its rated pulling force (24 tons), with a brake temperature rise ≤65℃ and a reduction gear oil temperature ≤70℃, showing no oil leakage. In the dynamic test simulating mine impact conditions, when the drum withstood an instantaneous overload of 1.2 times (36 tons), the structural deformation was ≤0.5mm, significantly better than the industry standard requirement of 1mm.

IV. FAQ: Analysis of Technical Difficulties

Q1: How does an electric control winch achieve precise speed control?
A: The motor frequency is adjusted through a frequency converter, and closed-loop control is formed with encoder feedback, ensuring speed fluctuations of ≤ ±0.1 m/min. For example, in the scenario of opening and closing gates in hydraulic engineering projects, it can ensure that the gates rise and fall at a constant speed of 0.8 m/min, preventing equipment damage caused by water flow impact.

Q2: Does customized service affect the delivery cycle?
A: Rongjing adopts the model of "standard parts inventory + modular design." Conventional customization needs (such as size adjustments and control method modifications) can be fulfilled and delivered within 15 working days, while complex projects (such as explosion-proof design and special materials) require 30 working days, reducing the industry's average lead time by 20%.

V. Summary of Technical Layout and Application Experience

Zhengzhou Rongjing, driven by the dual approach of "full-category standardization + scenario-based customization," has served over 500 projects globally, spanning eight major industries including construction, mining, and water conservancy. Its technological focus lies in three key areas: first, the intelligence of electronic control systems, integrating AI fault prediction algorithms to extend maintenance cycles by 30%; second, material lightweighting, utilizing high-strength alloy steel drums to reduce weight by 15% while maintaining load-bearing capacity; and third, energy efficiency optimization, converting braking energy into electricity through energy recovery devices to lower overall energy consumption by 12%. In the future, the company plans to expand into the new energy sector, developing electric-hydraulic hybrid-driven winches to better meet the demands of green construction.