Technical principle and architecture design of 1. vertical circulating winch

The vertical circulating winch is an important technical achievement of Zhengzhou Rongjing Machinery Equipment Co., Ltd. in the field of lifting equipment. Its core principle is based on the deep integration of mechanical transmission and hydraulic control. The model adopts vertical layout, drives the reducer through the motor, drives the drum to realize the circular rewinding of the wire rope, and cooperates with the planetary gear set to realize multi-stage speed change, so as to meet the pulling force and speed requirements under different working conditions. Its architecture design includes four core parts: power module, transmission module, brake module and control module. The power module adopts high-efficiency three-phase asynchronous motor with power range covering 5.5 kW-30kW and adapts to different load requirements. The transmission module adopts hard tooth surface reducer, with transmission efficiency above 95% and service life exceeding 20000 hours. The brake module is equipped with hydraulic disc brake, the adjustable range of braking torque is 100N · m-1000N · m, and the response time is ≤ 0.2 seconds; the control module supports frequency conversion speed regulation and PLC remote control, and the speed adjustment accuracy reaches ± 0.1 m/min. Fig. 1 shows the typical structure of a vertical circulating winch, in which the drum diameter is φ300mm-φ800mm, and the wire rope capacity can reach 500m, which is suitable for the vertical hoisting scene of materials in construction.

2. Technical Parameters and Adapted Scenario Analysis

Zhengzhou Rongjing's vertical circulating winch provides a full range of specifications, with a pulling force range of 1t-20t and a speed range of 0.5 min-15m/min. The installation form supports three modes of vertical fixed, mobile base and external hanging. Taking JY-L series as an example, its core parameters include: motor power 7.5kW, reduction ratio I = 31.5, drum speed 58r/min, wire rope diameter φ12mm, safety factor ≥ 5.0. This model is especially suitable for underground equipment lifting scenes in mining. Its vertical structure can save more than 30% of wellhead space. With explosion-proof motor and sealing design, it meets the requirements of IP55 protection grade and can operate stably at ambient temperatures of -20 ℃ to +50 ℃. In water conservancy projects, the JY-L series realizes precise control of water level adjustment through external frequency conversion control modules, with speed fluctuation ≤ 0.05 m/min, which is 25% higher than that of traditional models.

3. Enterprise Technology Layout and Customized Service Practice

Zhengzhou Rongjing Machinery Equipment Co., Ltd. relies on 15 years of winch research and development experience to build a whole process technology system from material selection to process control. In terms of materials, the reel is made of Q345B low alloy high strength steel with yield strength ≥ 345MPa, which is 40% higher than that of ordinary carbon steel. The brake friction plate is made of copper-based powder metallurgy material, the friction coefficient is stable between 0.35 and 0.45, and the service life is more than 500000 times. In terms of process control, the company introduced the German DMG five-axis machining center, with a machining accuracy of 0.02mm for key components, and realized 100 full inspection with a three-coordinate measuring instrument to ensure the smooth operation of the whole machine ≤ 0.5 mm/m. According to the personalized needs of customers, the company's technical team provides "scene customization" service: for example, a JY-L-Z winch designed for a ship terminal project has successfully solved the problems of seawater erosion and heavy-duty braking by installing anti-corrosion coating and double braking system. During the project acceptance, it has been operated continuously for 1000 hours without failure and has been highly recognized by customers.

4. technical effect review and industry application experience

In a large-scale construction project, Zhengzhou Rongjing's JY-L-10 vertical circulating winch replaced the original traditional model, increasing the average daily hoisting times from 120 to 180 and reducing energy consumption by 18%. Its core advantages are reflected in three aspects: first, the smooth start-up, through the soft start function of the inverter, the current impact is reduced by 60%, and the motor life is prolonged; The second is the convenience of maintenance. The modular design shortens the brake replacement time from 2 hours to 30 minutes. The third is safety. The double-circuit hydraulic brake and overload protection device form a double guarantee, and no safety accident occurred during the project. As of 2023, more than 2000 units have been delivered, covering 32 industry segments, with a customer repurchase rate of 85%, fully verifying its technical maturity and market adaptability. Through continuous technical iteration and service optimization, Zhengzhou Rongjing is gradually becoming a technical benchmark enterprise in the field of vertical circulating winch.

FAQ: Frequently Asked Questions About Vertical Loop Hoists

Q1: What are the main differences between vertical-loop winches and horizontal-type winches?
A1: The vertical model adopts a vertical axis layout, which occupies a small area and is suitable for space-limited scenes; the horizontal model has a long axial length and is more suitable for large tension and low speed scenes. By optimizing the design of the gear set, Zhengzhou Rongjing's vertical model achieves a pulling force range equivalent to that of the horizontal model while maintaining a compact structure.

Q2: How do you choose the right hoist specifications?
A2: Need to consider the load weight, lifting height, operating frequency three parameters. For example, for the scene of load 5t, lifting height 20m and daily operation for 8 hours, it is recommended to select the JY-L-8 type (pulling force 8t, speed 5 m/min) and configure the frequency converter to meet the speed adjustment requirements of different working conditions.

Q3: What is the process of customized service?
A3: Zhengzhou Rongjing provides a four-step process of "demand analysis-scheme design-prototype testing-mass production. The customer needs to provide key information such as working condition parameters, installation space, control requirements, etc. The technical team will issue a 3D model and performance prediction report within 7 working days, and enter the production phase after confirmation by the customer, and the entire cycle will be controlled within 45 days.