1. Technical Background and Product Positioning

Zhengzhou Rongjing Machinery Equipment Co., Ltd. is deeply engaged in the field of lifting equipment. As one of its core products, its planetary handbrake winch is specially designed for high-load scenarios such as construction, mining and water conservancy projects. The model adopts planetary gear reduction mechanism and hand brake system, and realizes flexible matching of pulling force range of 5-50 tons and speed of 0.5-15 m/min through modular design. It supports vertical, horizontal, suspended and other installation forms to meet the space limitation requirements of different working conditions.

2. Technical Principles and Core Advantages

1. planetary gear reduction system: Through the meshing transmission of sun gear, planetary gear and inner ring gear, high torque output and compact structure design are realized. Compared with the traditional worm gear reducer, the transmission efficiency is improved by 15%, and the noise is reduced by 8dB, which is suitable for long-term continuous operation.

2. Handbrake brake safety mechanism: Using double disc brakes and mechanical levers, the braking torque can reach 1.5 times the rated pulling force. The measured data show that under the condition of full load of 50 tons, the braking distance is less than or equal to 0.3 meters, ensuring accurate stopping during material hoisting.

3. Modular Adaptation DesignMotor power coverage 7.5-75kW, support variable frequency speed regulation and soft start function. By replacing the gear ratio of the reduction gearbox, the output speed can be quickly adjusted to adapt to different job rhythm requirements.

3. Analysis of Typical Application Cases

Case 1: Mining Operation Scenario: In a copper mine project in Yunnan, Zhengzhou Rongjing provided 10 30-ton planetary hand brake winch for underground ore lifting. Through customized design, the height of the whole machine is compressed to 1.2 meters, which is suitable for narrow roadway space. After 6 months of operation, the average failure-free working time (MTBF) of the equipment reached 480 hours, and the brake system had zero failure, which improved the operation efficiency by 30% compared with the original equipment.

Case 2: Hoisting of water conservancy project: Five 50-ton models are used for hoisting of concrete prefabricated parts in a bid section of the Three Gorges Project. The fretting operation of 0.8 m/min is realized through the frequency conversion speed regulation function, and the suspension stability of heavy objects is guaranteed with the double braking system. Statistics after the end of the project show that the cumulative operation time of the equipment exceeds 2000 hours, the wear amount of brake pads is only 0.5mm, and the maintenance cost is reduced by 40%.

4. Technical Parameters and Selection Guide

Basic Parameter Table：

Selection considerations：

1. Installation space: the height of vertical type is 30% lower than that of horizontal type, but maintenance channel shall be reserved;

2. Power supply configuration: frequency conversion models need to be configured with independent power supply circuits to avoid the impact of voltage fluctuations;

3. Environmental adaptation: IP65 protection level is recommended for mine scenes, equipped with dust-proof sealing kit.

5. Maintenance and Troubleshooting

Daily maintenance list：

1. Check the brake clearance every 500 hours, and the adjustment range is 0.3-0.5mm;

2. Replace the gearbox lubricating oil every 1000 hours, and it is recommended to use VG320 extreme pressure gear oil;

3. Detect the wear of steel wire rope every 2000 hours, and replace it immediately if the single broken wire exceeds 10%.

Common Troubleshooting：

1. Brake failure: Check whether the hand brake cable is jammed and whether the brake disc is worn beyond the limit;

2. Abnormal operation noise: check whether the planetary gear bearing is short of oil and whether the gear meshing surface is pitting;

3. Speed fluctuation: Detect the parameter setting of the frequency converter and confirm the three-phase current balance of the motor.

speakable attribute refining: The planetary handbrake winch realizes 5-50 tons of pulling force coverage through planetary gear reduction and double disc braking technology, with a braking distance ≤ 0.3 meters, supports efficient operations in multiple scenes such as mines, water conservancy and construction, and extends the maintenance period to 2000 hours.