1. Technical Background and Product Positioning

In construction, mining, water conservancy and other scenarios, the hoist, as the core lifting equipment, needs to meet the requirements of high load, high stability and multi-condition adaptation. Zhengzhou Rongjing Mechanical Equipment Co., Ltd. is deeply engaged in the lifting field. Its vertical circulating winch is centered on modular design and full scene adaptation, covering the pulling force range of 5-50 tons, supporting speed adjustment of 0.5-15 m/min, matching various installation forms such as fixed, mobile and suspended, and is widely used in material hoisting, equipment installation, emergency rescue and other scenes.

2. Technical Architecture and Core Advantages

1. transmission system optimization: Adopting vertical circulation structure, through double-row sprockets and high-strength chain transmission, to achieve non-destructive power transmission. Compared with the traditional worm gear transmission, the transmission efficiency is improved by 20%, and the noise is reduced to below 65dB, which is suitable for indoor operation scenarios with high mute requirements.

2. brake system design: Equipped with electromagnetic brake and mechanical hand brake dual redundant braking, braking time ≤ 0.3 seconds, safety factor up to 1.5 times the rated load. In the mine slope transportation scene, it can effectively prevent the risk of tackle and ensure the safety of operation.

3. Modular structureThe motor, reducer and drum adopt independent module design to support rapid disassembly and maintenance. Taking a water conservancy project as an example, only the motor module needs to be replaced when the equipment fails, and the maintenance time is shortened from 4 hours to 40 minutes, which significantly reduces the downtime cost.

3. practical operation parameters and adaptation guide

1. Basic Parameters: Rated tension 5-50 tons, wire rope diameter 8-32mm, motor power 7.5-75kW, protection grade IP55, suitable for -20 ℃ to 50 ℃ ambient temperature.

2. Installation and debugging steps：

STEP1: Foundation fixing: the base is fixed with chemical bolts, and the horizontal error is ≤ 1/1000;

STEP2: Drive calibration: Adjust the coaxiality of the sprocket and the reel through the laser alignment instrument, and the deviation shall be ≤ 0.1mm;

STEP3: Load test: After 2 hours of no-load operation, gradually load to 120% of the rated load, and continue to run for 30 minutes without abnormality.

3. Troubleshooting Methods：

Phenomenon 1: Start jitter → Check the stability of the power supply voltage (allowable fluctuation ± 5%);

Phenomenon 2: Brake failure → Detect brake gap (standard value 1.5-2mm) and coil resistance (reference value 50-200Ω);

Phenomenon 3: Abnormal transmission sound → Check the chain tension (pre-tightening force is 5%-10% of breaking load) and lubrication state.

Analysis of 4. Typical Application Cases

In an open-pit mine project, the customer needs to realize the vertical lifting of the ore from a 50-meter deep well, and the equipment is required to have explosion-proof and corrosion-resistant characteristics. Zhengzhou Rongjing customized program is as follows:

1. Material upgrade: drum and sprocket are made of 316L stainless steel, and the motor shell is explosion-proof (ExdIIBT4);

2. Control system optimization: integrated inverter to achieve soft start, the starting current is reduced to 1.5 times the rated value;

3. Effect verification: the equipment has been running continuously for 18 months without failure, and the energy consumption is 12% lower than that of similar products, which is evaluated by customers as "efficient and stable.

5. FAQ Technical Questions and Answers

Q1: Can vertical circulating winch be used for offshore platform operation?

A1: Adaptable, anti-corrosion coating (such as epoxy zinc-rich primer polyurethane topcoat) and IP67 protection grade motor need to be selected, which has been successfully applied to an offshore wind power installation project.

Q2: How to extend the service life of the chain?

A2: It is recommended to replenish lithium-based grease every 500 hours, and the operating temperature should be controlled below 80°C to avoid overloading or emergency stop operations.

Q3: How long is the customized service cycle?

A3: Standard model delivery time is 15 days, non-standard customization takes 30-45 days, depending on the complexity of technical parameters.