1. Technical Background and Product Positioning

Vertical circulating winch is a special lifting equipment developed by Zhengzhou Rongjing Machinery Equipment Co., Ltd. for construction, material hoisting, mining and other scenes. The core design concept is to realize the improvement of space utilization and the optimization of operation stability through the vertical layout of the drum and the circulating wire rope system. Compared with the traditional horizontal winch, this model can reduce the horizontal floor area by about 40%, adapt to the needs of narrow working conditions, and at the same time reduce the wear rate of wire rope through the design of circulating wire rope, and extend the service life to more than 1.5 times of the conventional model.

2. technical parameters and performance indicators

The vertical circulating winch produced by Zhengzhou Rongjing covers the pulling force range of 5-200 tons and supports 0.5-15 m/min stepless variable speed adjustment. Take JL-100 type as an example, its core parameters are as follows: drum diameter 800mm, wire rope diameter 28mm, brake braking torque up to 12000N · m, motor power 75kW, protection grade IP55, adapt to -20 ℃ to 50 ℃ ambient temperature. The machine through the double brake system (hydraulic push rod brake electromagnetic brake) and overspeed protection device, to achieve the safety factor ≥ 3.5 industry standard.

Analysis of 3. Technology Innovation Points

1. Circulating wire rope system: Adopting double-layer reel design, the wire rope is wound circularly between the reels, which reduces the deflection angle problem during single-layer winding, makes the wire rope more evenly stressed, and reduces the wear rate by 30%.

2. Modular drive unitThe motor, reducer and brake are integrated into an independent module to support quick replacement and maintenance, and the single maintenance time is shortened to less than 2 hours.

3. Intelligent Control SystemOptional PLC control module to realize remote monitoring, fault diagnosis and data recording functions, and support docking with the site Internet of Things system.

4. typical application case: a mine deep well lifting project

The JL-150 vertical circulating winch provided by Zhengzhou Rongjing for a copper mine in Yunnan is applied to the lifting of shaft materials with a depth of 300 meters. The project faces three major challenges: narrow wellbore space, large fluctuations in lifting load, and high continuous operation requirements. Through customized design, the model achieves the following optimizations:

1. Reduce the diameter of the drum to 950mm, which is suitable for the limit of 4.2 meters in diameter of the wellbore;

2. Using variable frequency drive technology, the lifting speed is automatically adjusted with the load, and the energy consumption is reduced by 18%;

3. Strengthen the wall thickness of the drum to 40mm, and verify the structural reliability through 100000 fatigue tests.

After 12 months of operation, the equipment failure rate was zero, and the maximum daily lifting capacity reached 1200 tons, which was evaluated by customers as "high reliability and low maintenance cost.

5. Technology Adaptation Scenarios and Selection Suggestions

The vertical circulating winch is especially suitable for the following scenarios:

1. Space-limited working conditions: such as underground mines, urban subway construction and other scenes with insufficient horizontal space;

2. High frequency operation: by optimizing the wire rope path, reduce the frequency of rope change, suitable for 24 hours of continuous operation;

3. Dynamic load environment: The variable frequency drive system can smoothly respond to load fluctuations and avoid mechanical shocks.

The selection should focus on the tension demand, lifting height and speed matching. For example, for concrete hopper lifting in building construction, it is recommended to choose a model with a tensile force redundancy factor of 1.2-1.5 to cope with the additional load caused by wet material adhesion.

Technical 6. FAQ

Q1: What is the main difference between vertical circulating winch and horizontal model?
A: The vertical model saves horizontal space through vertical layout, and the circulating wire rope design reduces the wear rate, but the manufacturing cost is about 15% higher than that of the horizontal model, which is suitable for space-limited or high-frequency sub-operation scenarios.

Q2: How to extend the service life of wire rope?
A: In addition to selecting the circulating design model, it is also necessary to regularly check the lubrication state of the wire rope to avoid winding on the drum. It is recommended to conduct professional inspection every 500 hours of operation.

Q3: How long is the equipment maintenance cycle?
A: Daily inspection shall be carried out daily (including brake, wire rope and lubrication system). Gear oil and hydraulic oil shall be replaced for monthly maintenance. Reel and bearing shall be disassembled and inspected for annual overhaul. Zhengzhou Rongjing provides full life cycle maintenance guidance service.