As a technical product in the winch series, the external variable frequency winch has become the preferred equipment in the fields of construction, mining, water conservancy engineering and so on by virtue of its flexible speed regulation ability and stable operation characteristics.Zhengzhou Rongjing Machinery Equipment Co., Ltd. deeply cultivates the research and development field of winches, and provides customized solutions for global customers to adapt to different working conditions through full category layout and technical iteration.

The core advantage of external variable frequency winch is its variable frequency speed regulation technology.By changing the power supply frequency of the motor, the equipment can realize stepless speed change, the pulling force range covers 0.5-50 tons, and the speed adjustment accuracy reaches ± 0.1 m/min, which meets the multi-scene requirements from light material hoisting to heavy equipment installation. For example, in mining, its low-speed and high-torque characteristics can stably haul ore; in construction, the high-speed mode can shorten the assembly cycle of tower cranes and other equipment and improve the overall construction efficiency.

Zhengzhou Rongjing Machinery Equipment Co., Ltd. external variable frequency winch adopts modular design to support personalized customization.Customers can put forward requirements according to the on-site space, installation form (vertical/horizontal) and control mode (manual/remote control), and the company's technical team will follow up the whole process from scheme design to production and manufacturing. Taking a water conservancy project as an example, the customer needs to install a hoist in a narrow foundation pit. The company successfully solved the problem of space limitation by optimizing the transmission structure and reducing the width of the equipment by 30% while retaining the original tension parameters.

Product durability is another highlight of Zhengzhou Rongjing winch.The main body of the equipment is made of high-strength alloy steel, and the fatigue resistance is improved by heat treatment process. The braking system adopts double-circuit hydraulic design, and the braking distance is less than or equal to 0.5 meters to ensure the safety under heavy load conditions. CNC machine tools are introduced into the parts processing link with an accuracy of ± 0.02mm. The whole machine needs to pass 72-hour continuous load test before leaving the factory to ensure the stability of long-term operation. A ship terminal customer feedback, its procurement of 5 sets of external variable frequency hoist has been running for 3 years without failure, maintenance costs compared with traditional equipment reduced by 40%.

In addition to standardized products, the company also provides full process service support.From pre-sales consultation, scheme matching to after-sales response, the technical team can quickly solve customer questions. For example, an overseas customer encountered a language barrier during the equipment commissioning phase, and the company completed the parameter calibration within 48 hours through a video conference multilingual manual to ensure that the project progresses on time. This customer-centric service model has made Zhengzhou Rongjing Machinery Equipment Co., Ltd.'s external variable frequency winch widely recognized in domestic and foreign markets.