Products Description
A large multiple segmented girth gear adopts a modular design to adapt to the manufacturing and installation requirements of ultra-large diameter and ultra-heavy operating conditions. Its structure precisely divides the gear ring body into segments, each segment with positioning pins and high-strength connecting structures. After assembly, it achieves a precise closed-loop design for the entire gear ring, balancing machining feasibility and assembly convenience. Its advantages include overcoming the transportation and hoisting limitations of single-segment gear rings, reducing the machining difficulty and cost of ultra-large workpieces, and facilitating on-site installation, commissioning, and subsequent partial maintenance and replacement without requiring overall disassembly. This structure can adapt to the high-load, high-precision transmission requirements of heavy equipment such as wind power and mining machinery, combining structural flexibility and operational reliability, making it one of the core components of large-scale transmission systems.
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features of large multiple segmented girth gear
Segmented Design: The girth gear is divided into several segments, making it easier to transport, install, and maintain. This is especially important for large gears that may be challenging to handle as a single piece.
Modularity: Segmented girth gears are modular in design, allowing for the replacement of individual segments if they become damaged or worn, instead of replacing the entire gear. This can lead to cost savings in terms of maintenance and replacement.
Precise Tooth Machining: Each gear tooth is precisely machined to ensure proper engagement with a mating pinion gear. This precision is crucial for the smooth and efficient operation of the machinery.
machinery processing of large multiple segmented girth gear
The machining of large segmented gear rings is based on forging. First, high-strength alloy steel ingots are forged. High-temperature forging densifies the metal structure, improving the overall strength and toughness of the gear ring and laying a solid material foundation for subsequent machining. After forging, the mating surfaces of the segmented gear rings are milled to precisely ensure the flatness and roughness of the mating surfaces, ensuring the fitting accuracy when each segment is joined. Then, a heat treatment is performed, refining the grains through quenching and high-temperature tempering, giving the gear ring uniform comprehensive mechanical properties.
After heat treatment, the gear ring enters the turning stage. A large CNC lathe is used to precision turn the inner hole, outer circle, and end face of the gear ring, strictly controlling dimensional and geometric tolerances to ensure the accuracy of the reference surface. Next, depending on the gear ring specifications and precision requirements, milling or hobbing is selected to machine the tooth profile. Hobbing is suitable for high-precision tooth profile machining, ensuring uniform tooth pitch, while milling is suitable for machining complex tooth profiles or large-module gear rings, efficiently completing the tooth profile shaping.
After the tooth profile is machined, the tooth surface undergoes surface hardening treatment. High-frequency induction heating is used to achieve high hardness and wear resistance on the tooth surface, while retaining the toughness of the tooth core to prevent tooth surface wear or cracking during use. Finally, drilling is performed to drill connecting holes at the flange of the gear ring, ensuring that the hole diameter and position accuracy meet assembly requirements. All processes are closely connected to ultimately form a large segmented gear ring that meets the usage requirements.
applications
Large segmented girth gears have a wide range of applications. They are used for heat treatment of materials in rotary kilns in cement, lime production and mineral processing; to drive the rotation of rollers to grind materials in ball mills and tube mills in the mining industry; to drive rollers to press sugarcane to extract juice in sugar mills; to adapt to paper drying and pulp processing equipment in paper mills; to assist the rotation of equipment such as steel ladles and furnaces in steel mills; and can also be used for chemical mixing and stirring in large rotating containers in chemical plants.
Contact us
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Email: sales@yujieindustry.com
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