Technical Background and Industry Requirements

In construction, mining, water conservancy projects, and other scenarios, the stability and adaptability of lifting equipment directly affect operational efficiency and safety. As the core power unit, electric winches need to meet high load, precise control, and environmental tolerance requirements. Zhengzhou Rongjing Machinery and Equipment Co., Ltd., with 20 years of technical accumulation, has launched a full series of electric winches covering a tension range of 5-200 tons. Through modular design, it achieves flexible configuration of speed, installation form, and control method, becoming the preferred solution for customers in multiple industries.

Technical Analysis: Core Architecture and Performance Parameters of Electric Hoists

Zhengzhou Rongjing Electric Hoist adopts an integrated structure of "motor-reducer-reel-braking system", with the core component parameters as follows:

Motor ParametersPower range: 7.5-160kW, compatible with three-phase AC power (380V/50Hz), protection grade IP55, stable operation in environments of -20℃ to +50℃.

Reducer ParametersHardened spur gear design, transmission efficiency ≥95%, speed ratio range 5-80, supports single or multi-stage combination.

Roll parametersDiameter: 300-1200mm, Wire rope capacity: 50-500m,槽型设计符合GB/T 20864标准，减少钢丝绳磨损。

Braking SystemHydraulic disc brake, braking torque 500-50000N·m, response time ≤0.2 seconds, supports manual/automatic dual-mode switching.

Through PLC control system, the equipment can achieve forward and reverse operation, speed adjustment, single-step, and linkage, with speed accuracy ±2%, meeting the needs of precise lifting.

Practical Guide: Installation, Debugging, and Fault Troubleshooting

STEP 1: Basic InstallationSelect vertical or horizontal installation according to working conditions, ensure the centerline of the drum is aligned with the load direction, error ≤ 3°; ground bolt specifications should be M24-M36, with pretension torque in accordance with the equipment manual requirements.

Step 2: Electrical WiringThe power cable uses YJV type copper-core cable, the cross-sectional area is calculated based on the current (e.g., a 55kW motor requires a 25mm² cable); the control circuit is independently wired to avoid signal interference.

Step 3: Debugging ProceduresOperate at no load for 2 hours, check motor temperature rise (≤80℃) and brake sensitivity; load test in 3 stages (30%, 60%, 100% of rated load), record operating data.

Common Fault TroubleshootingIf the equipment does not move after startup, check the power phase sequence (correct sequence required for three-phase power) and the contactor contact status first; if the brake cannot be released, inspect the hydraulic oil pressure (normal value 10-15MPa) and the solenoid coil resistance (standard value 50-200Ω).

Case Analysis: Customized Solution for Mining Scenario

A copper mine project requires hoisting 20 tons of ore at an underground depth of -300 meters, but conventional winches cannot be used due to space constraints and high explosion-proof requirements. The Zhengzhou Rongjing technical team proposes the following solution:

Structure OptimizationVertical installation adopted, reel diameter reduced to 800mm, height reduced by 40%, suitable for narrow underground passages.

Intrinsically Safe DesignThe motor and control box are upgraded to ExdIIBT4 explosion-proof grade, and the brake seal ring is made of fluororubber material, which is resistant to gas corrosion.

Remote MonitoringEquipped with a 4G IoT module, it transmits operational data in real-time to the ground control center, supporting fault warnings and remote shutdown.

After project implementation, the equipment ran continuously for 18 months without failure, with energy consumption reduced by 15% compared to the original plan, receiving the customer's evaluation of "efficient and stable."

Summary of Technical Advantages and Recommended Application Scenarios

Zhengzhou Rongjing Electric Hoist's core advantage lies in "full-scenario adaptability": Through modular design, the same model can quickly adjust parameters to match construction projects (5-50 tons), port logistics (50-200 tons), and water conservancy emergency rescue (flood prevention special type). At the same time, it provides a full-process service from project design to after-sales maintenance, ensuring customers "one-time purchase, long-term worry-free."

For customers with special requirements, it is recommended to prioritize communication on working conditions details (such as temperature range, space dimensions, load type) to enable the technical team to tailor the optimal solution.