I. Technical Background and Product Positioning

The Planetary Winch is one of the core products developed by Zhengzhou Rongjing Machinery and Equipment Co., Ltd. for the lifting needs of various industries, belonging to the high-performance branch of the electric control winch series. This model achieves adjustable parameters of 5-50 tons of pulling force and 0.5-15m/min speed through the deep integration of planetary gear transmission and handbrake braking system, and is adaptable to complex working conditions such as construction, material hoisting, and mining. Its technical positioning focuses on "safety, efficiency, and versatility," and meets customers' personalized needs for installation space, control methods, and load characteristics through modular design.

2. Technical Principle and Core Advantages

1. Planetary Gear Drive SystemAdopts a three-stage planetary gear reduction structure, with gear modulus of 3-5mm and surface hardness of HRC58-62. It disperses the load through multiple-tooth meshing, improving the efficiency by 20% compared to traditional worm gear drive and reducing operating noise to ≤75dB at a distance of 1 meter.

2. Handbrake braking safety mechanismThe brake features a dual-disc design, with a braking torque reaching 1.5 times the rated tensile force. Complemented by the hydraulic assist system, it can achieve emergency braking within 0.3 seconds during power failure or fault, with a braking distance ≤ 0.5 meters (full load condition).

3. Material and Process StandardsCoils, gears and other key components are made of Q345B low-alloy high-strength steel, with a yield strength of ≥345MPa after quenching and tempering treatment; the whole machine has an IP55 protection grade, suitable for environmental temperatures from -20℃ to 50℃, and can withstand salt spray tests for ≥500 hours without rusting.

III. Customized Service Process and Technical Adaptation

Zhengzhou Rongjing offers a full-process customized service from requirement analysis to delivery, with typical steps as follows:

STEP 1: Operating Condition AssessmentOn-site survey of the installation space by the technical team (such as derrick height, ground bearing capacity), load characteristics (such as frequent start/stop, impact load), and control requirements (such as remote operation, variable frequency speed regulation).

STEP 2: Solution DesignBased on the evaluation results, adjust the coil diameter (400-1200mm), motor power (7.5-75kW), and brake type (mechanical/hydraulic), and provide 3D models and BOM lists for customer confirmation.

Step 3: Production and Quality InspectionGear accuracy reaches GB/T 10095-2008 level 6 with the use of CNC machining centers, and the entire machine is factory-shipped after passing 100% load test (running continuously for 8 hours without failure).

Four, Typical Application Cases: Mining Exploration Scenario

A large iron ore project requires the transportation of ore underground at -300 meters, with the original equipment experiencing 3 collapse accidents due to brake failure. Zhengzhou Rongjing provides a customized solution:

1. Parameter AdaptationSelect a planetary winch with a rated pull of 30 tons and a speed of 5m/min, featuring a drum diameter of 800mm to reduce wire rope bending fatigue.

2. Security EnhancementIncreased dual brake redundancy design, braking torque upgraded to 45kN·m, and equipped with an overspeed protection device (action threshold at 1.2 times the rated speed).

3. Effect VerificationAfter 12 months of project operation, the equipment failure rate dropped from the original 15% to 0.5%, the single-shift operation efficiency increased by 30%, and received the customer's praise for "strong technical adaptability and fast service response."

V. Technical FAQ & Selection Suggestions

Q1: How to choose between planetary winch and turbine winch?
A: Planetary models have high transmission efficiency (≥85%) and low noise, suitable for frequent start-stop applications; Turbine models have simple structure and low cost, suitable for low-speed high-torque applications.

Q2: How long is the customization service cycle?
A: Standard model delivery period is 15 days, custom models require 25-40 days (including scheme confirmation and production debugging stages).

Q3: What are the key points of equipment maintenance?
A: Check the brake pad thickness every 500 hours (replace if remaining ≥ 3mm), and change the gear oil every 2000 hours (recommend using ISO VG320 industrial gear oil).