1. Technical Background and Product Positioning

Planetary handbrake winch is one of the core products developed by Zhengzhou Rongjing Machinery Equipment Co., Ltd. for lifting requirements under complex working conditions. This model integrates planetary gear transmission and hand brake technology, and realizes high-precision and high-safety lifting operations by optimizing the transmission ratio and braking response mechanism. The original intention of its design is to solve the performance bottleneck of traditional winch in heavy load, frequent start and stop or limited space scenarios, such as ore lifting in mining, equipment lifting in water conservancy projects and other scenarios, all of which put forward strict requirements on the stability and braking reliability of the winch.

Principle of 2. Technology and Analysis of Core Parameters

1. Planetary gear transmission system: It adopts three-stage planetary gear reduction structure, and the transmission ratio range covers 8:1 to 32:1, which can be adapted to different pulling force requirements. For example, the rated pulling force of the standard model XH-10T is 10 tons. By adjusting the ratio of the number of planetary wheels to the number of teeth, it can be extended to a 15-ton pulling force version to meet the heavy load requirements of the mine scene.

2. Handbrake braking module: The brake adopts double disc friction plate design, the braking torque reaches 2500N · m, and the response time is ≤ 0.3 seconds. In case of sudden power failure or overload, the hand brake can be manually intervened to ensure that the equipment stops running immediately and avoid safety accidents. The measured data show that the braking distance is controlled within 0.5 meters under the working conditions of full load of 10 tons and lifting speed of 5 m/min.

3. Motor and control adaptation: Support three-phase asynchronous motor (power range of 7.5 kW-22kW) and variable frequency motor dual-mode drive, voltage level covering 380V/660V. The frequency conversion control version can realize stepless speed regulation of 0-15 m/min, which is suitable for precise hoisting requirements in building construction.

Application Cases and Technology Adaptability in 3. Industry

1. Mining Scenarios: In an iron ore project in Inner Mongolia, the XH-15T planetary hand brake winch provided by Zhengzhou Rongjing was used for ore lifting operations. By optimizing the gear material (20CrMnTi alloy steel) and heat treatment process (hardness HRC58-62), the gear wear rate is reduced by 40%, the brake life is extended to 18 months, and the downtime maintenance time is significantly reduced.

2. Water conservancy project scene: In the maintenance project of a hydropower station in the Three Gorges, the XH-5T hoist needs to be hoisted in a humid environment. Zhengzhou Rongjing increased the IP55 protection level and anti-corrosion coating treatment to enable the equipment to operate stably in an environment with 90% humidity, and the brake system did not have the problem of brake failure caused by corrosion.

3. building construction scene: In a super high-rise building project in Shenzhen, the customer needs to install a winch in a limited space. Zhengzhou Rongjing has customized a XH-8T model with vertical installation structure, which covers an area of 35% less than that of the traditional model. At the same time, by optimizing the design of the motor heat dissipation air duct, it is ensured that the equipment will operate continuously in a high temperature environment of 40 ℃ without overheating alarm.

4. Technical Advantages and Customized Services

1. Modular design: The transmission module, brake module and motor module of the planetary hand brake hoist can be disassembled independently, which is convenient for quick maintenance and component upgrade. For example, a customer needs to increase the pulling force to 12 tons after 3 years of use, only need to replace the planetary gear set and brake disc, without the overall replacement of equipment, the cost is reduced by 60%.

2. Full process service support: Zhengzhou Rongjing provides full-process services from condition analysis, scheme design to installation and commissioning. In an overseas project, the team guided the customer through remote video to complete the equipment installation, and responded to the brake system debugging requirements within 24 hours to ensure that the project was delivered on time.

3. Safety Redundancy Design: In addition to handbrake braking, the equipment comes standard with double overload protection and emergency stop button, which meets EU CE safety standards. In the acceptance test of a European customer, the equipment can still brake normally under 120% rated load, and the safety factor is highly recognized by the customer.

5. Technology Iteration and Future Direction

Zhengzhou Rongjing is developing an intelligent planetary handbrake hoist integrated with an Internet of Things module. It monitors parameters such as gear temperature and brake pad wear in real time through sensors and uploads them to the cloud management platform. This technology can give early warning of equipment failure and reduce unplanned downtime. It is expected to be introduced to the market in 2025, further consolidating the leading position of enterprises in the field of winches.