1. Technical Background and Industry Adaptability

As the core equipment in the field of lifting equipment, the performance of electronically controlled winch directly affects the construction efficiency and safety. Zhengzhou Rongjing Mechanical Equipment Co., Ltd. has accumulated many years of technology. The electronically controlled winch developed by Zhengzhou Rongjing Mechanical Equipment Co., Ltd. covers the pulling force range of 500kg-50t, supports speed adjustment of 0.5-30 m/min, and can meet the needs of many industries such as construction, mining, water conservancy engineering, etc. Taking the construction scene as an example, its low-speed stable operation characteristics can accurately control the concrete pouring height and avoid structural deviation caused by speed fluctuation; in mining, the high-tension model can drag heavy ore trucks, and a single device can replace the traditional two-machine collaborative operation, reducing the energy consumption cost by 30%.

2. Technical Architecture and Core Parameter Analysis

Zhengzhou Rongjing electric hoist adopts modular design, the main structure is composed of four modules: motor, reducer, drum and brake system. YE3 series high-efficiency three-phase asynchronous motor is selected as the motor, with a power range of 2.2-75kW, and the energy efficiency grade reaches the GB18613-2020 secondary standard. The reducer is driven by hard tooth surface gear, with HRC58-62 tooth surface hardness and transmission efficiency ≥ 95%. The reel adopts Q345B seamless steel pipe welding process, with a wall thickness of 12-30mm, and can withstand 3 times the rated tensile impact test. The brake system is equipped with double-circuit hydraulic push rod brake, and the braking time is less than or equal to 0.2s to ensure safe shutdown under emergency conditions.

In the control mode, support frequency control and PLC intelligent control dual mode. Frequency conversion speed regulation range 0-50Hz, speed resolution 0.01 m/min;PLC system can integrate 12 safety functions such as torque limit, overspeed protection, loose rope detection, etc. The data recording module can store the latest 1000 operation records, which is convenient for fault tracing and equipment maintenance.

3. customized service and technology landing case

For non-standard operating conditions, Zhengzhou Rongjing offers end-to-end customized services, from solution design to manufacturing. Taking a port container hoisting project as an example, the customer requires the equipment to be installed in a narrow space and to meet the low temperature environment of -20 ℃. The technical team implements the requirements through the following optimizations:

STEP 1: Structural OptimizationThe traditional L-shaped base is changed to Z-shaped folding structure, and the installation space is reduced by 40%. The diameter of the drum is reduced from φ800mm to φ600mm, and the tensile performance is maintained by increasing the number of winding layers.

STEP2: Material UpgradeThe brake friction plate is made of copper-based powder metallurgy material, the friction coefficient is stable in the range of 0.35-0.45, and the attenuation rate is less than or equal to 5% at -20 ℃. The motor winding is made of F-class insulation material, and the temperature resistance grade is increased to 155 ℃, which is suitable for cold start in low temperature environment.

STEP3: Control adaptationDevelopment of low-temperature dedicated inverter, start preheating time from the conventional 15 minutes to 3 minutes; increase the heating belt and temperature sensor, when the ambient temperature is lower than -10 ℃ automatically start the heat preservation mode.

After the delivery of the project, the equipment has been running continuously for 18 months without any faults. The average daily hoisting capacity of a single equipment reaches 120TEU, which is 25% higher than the efficiency of the original scheme. The customer will purchase 12 additional equipment of the same model in the future.

4. Quality Control and Lifecycle Service

Zhengzhou Rongjing has set up six quality inspection checkpoints from raw materials entering the factory to the whole machine leaving the factory: three-coordinate measuring instrument is used to detect key dimensions in the parts processing process, and the tolerance is controlled within ± 0.05mm; The assembly process implements the torque wrench torque fixing process, and the bolt tightening torque deviation is ≤ 3%; The whole machine test process simulates 20 working conditions such as full load, overload and emergency stop, with a cumulative running time ≥ 8 hours. The equipment has passed CE certification and ISO9001 quality management system audit before leaving the factory, and the warranty period of key components has been extended to 3 years.

At the service level, provide 7 × 24-hour technical response, and domestic customers will arrive at the site within 48 hours. Establish an equipment health management system, upload operation data in real time through the Internet of Things module, and automatically trigger early warning when parameters such as vibration value and temperature are abnormal to help customers prevent failures in advance. After the application of the system in a water conservancy project, the unplanned downtime of equipment is reduced by 60%, and the annual maintenance cost is reduced by 150000 yuan.

FAQPage structured questions and answers

Q1: What is the core difference between electronically controlled winch and manual winch?
A1: Electronically controlled winch realizes precise speed adjustment through motor drive and frequency conversion control, supporting remote operation and automation integration; manual winch relies on human or mechanical transmission, with extensive speed control, suitable for low frequency and light load scenarios. Zhengzhou Rongjing electronically controlled winch has a speed adjustment range of 0.5-30 m/min and a positioning accuracy of 5mm, which can meet the requirements of high-precision operations.

Q2: How to choose the winch model suitable for mine working conditions?
A2: The working conditions of the mine should focus on the tension, speed and protection level. Zhengzhou Rongjing suggested that the pulling force should be selected according to 1.5 times of the total weight of the ore truck (for example, 30t pulling force model should be selected for towing 20t ore truck); The speed is determined according to the transportation distance (5-10 m/min for short distance and 10-20 m/min for long distance); The protection grade shall reach IP55, the motor shall be insulated with Class F insulation, and the brake shall be equipped with dust cover to adapt to dust and humid environment.

Q3: How can the timeline and cost of customized services be controlled?
A3: The customization cycle depends on the technical complexity. It takes 15-30 days for conventional structural optimization and 45-60 days for new materials or new processes. Cost control is achieved through modular design: 70% of standard parts are retained and only 30% of non-standard parts are redeveloped, which reduces the cost by 20%-35% compared with the fully customized scheme. Zhengzhou Rongjing provides free working condition analysis service to help customers balance performance requirements and budget constraints.