I. Abstract

This article provides a detailed introduction to torque-limiting hydrodynamic transmission technology and its application examples. GY The series adopts a new enterprise standard that draws on and adapts German benchmarks, achieving technological upgrades in areas such as sealing, performance, monitoring, and vibration control. It is primarily designed to meet the demands of export engineering projects as well as serve the domestic market by providing high-end import substitution solutions—effectively replacing products originally sourced from Germany. VOITH Like comparable products from international brands, it features core functions such as soft start, flexible coupling, torque limitation, overload protection, and damping.

II. Keywords

Soft start; flexible coupling; semi-clutch; torque limitation; overload protection; damping; import substitution; torque-limiting hydrodynamic transmission

III. Core Technological Advantages (Compared to Traditional) YOX Series)

1. Higher sealing technology standards

Employing a multi-sealing protection system, it delivers stable performance with zero oil leaks over three years. The spindle utilizes TS Process treatment achieves surface roughness as low as ▽0.2 , Surface hardness > HV600 , the micro-surface creates an oil-storage grid, which reduces the friction coefficient with the skeleton oil seal and enhances dynamic sealing performance; equipped with temperature-resistant features 200℃ The imported oil seals use high-quality materials for static sealing areas (such as flanges). O The dual-sealing structure, featuring a molded sealing ring paired with a specially formulated sealant designed for automotive transmissions, comprehensively enhances sealing reliability.

2. Better performance

Possess " Faster, stronger " The power transmission characteristics. Adopting SKF 、 FAG High-quality bearings significantly enhance load-bearing capacity; selecting and customizing professional hydraulic transmission fluids can further improve power transmission efficiency. 5% to 15% ; The rotating components have undergone dynamic balancing, ensuring higher stability at high speeds, with a maximum operating speed of < 3000rpm , effectively reducing operational noise and wear.

3. Higher monitorability

Equipped with an external infrared temperature monitor, the temperature measurement range covers 0~300℃ , it can monitor equipment operating temperature in real time and predict overload trends in advance. The monitoring signals can be integrated into the centralized control system, supporting the output of temperature-related data. 4~20mA Standard signal, alarm output contact capacity reaches ~250V/5A , meeting the needs for automated control. The monitoring box utilizes 300 × 250 × 150 mm The front-opening, wall-mounted design is perfectly suited for 0~60℃ Ambient temperature and 10–95% (Non-condensation) relative humidity conditions.

4. Improved Vibration Control

Employing advanced German manufacturing techniques, the vibration control level has been significantly improved, with vibration values as low as 2.5mm/s By precisely controlling vibrations, the system effectively reduces the amplitude of vibrations during high-speed operation, minimizing resonance in the drive unit and providing a stable operating environment for supporting equipment such as motors, gear reducers, and conveyors—thereby extending the overall service life of the machinery.

5. More reliable structural craftsmanship

The threaded connection employs a dual-locking solution featuring spring washers combined with thread-locking adhesive, enhancing connection safety. Aluminum alloy components are manufactured using China's leading all-metal die low-pressure casting process, utilizing materials that meet GB/T 1173-1995 The standard ZL104 Aluminum alloy, which offers higher strength and a more uniform texture; fasteners are made of 8.8 Standard-grade fasteners, treated with galvanization, black oxide coating, or Dacromet for excellent corrosion resistance; surface finishing adheres to national standards. GB/T25264—2010 The acrylic metal protective paint boasts excellent weather resistance.

6. Better Connection Form

Adopting German technology GT High-elasticity coupling, featuring excellent flexible connection capabilities, with permissible radial and axial displacements both less than 1mm This connection design significantly enhances the equipment's ability to handle heavy loads and impact loads, while also providing isolation against torsional vibrations, thereby ensuring stable power transmission.

IV. Typical Application Examples

• Environmental Project in Illinois, USA: Equipping Dual-Drive Shredders with Infrared Temperature Monitoring GY The product, with its precise temperature monitoring and stable sealing performance, perfectly meets the heavy-duty demands of environmentally friendly shredding operations.
• CMC Export to Malaysia's Manjung Project: GY The product successfully replaces Germany. VOITH This type of product, with its outstanding vibration control and structural reliability, meets the stringent requirements of overseas engineering projects.
• China Metallurgical Siyuan exports Vietnam's Ha Tinh Formosa Steel Plant project: Utilizing GY A series of products, whose GT The high-elasticity coupling boasts excellent shock-load adaptability, perfectly meeting the power transmission requirements of heavy-duty operations in steel plants.

V. GY-GT Technical Specification Requirements for the High-Elasticity Series Hydraulic Coupling

1. Basic Definitions and Structural Requirements

The hydrodynamic coupling (hydraulic clutch), which uses transmission oil as the medium to transmit power, must be equipped with a rear auxiliary chamber or a side auxiliary chamber to cushion the impact during startup of the driven machine; it also requires G6.3 Grade dynamic balancing, vibration value < 4.5mm/s。

2. Soft Start and Overload Protection Requirements

It can meet the soft-start requirements for the rated load of the working machine, with a maximum start-up time. 20″ to 50″ ; Overload protection is achieved by melting the fusible plug to release oil when overload occurs; capable of withstanding prolonged operation 30% The alternating torque is suitable for multi-drive scenarios.

3. Monitoring and Adaptation Requirements

Configurable temperature and speed monitors, both capable of outputting 4~20mA Standard signal; equipped with a standard high-elastic coupling, offering excellent flexibility for robust connection and load-bearing capacity, and designed for easy replacement without the need to move the prime mover or driven machine.

4. Key Component Requirements

Adopt FAG 、 SKF Equivalent-quality bearings; equipped to withstand 200℃ The rubber dynamic seal; the entire unit is an upgraded, import-replacement version of Guangxing's limited-torque fluid coupling.

5. Summary of Core Features

Featuring core functions such as flexible coupling (isolating torsional vibrations), torque-limiting protection (overrunning clutch), and soft start (reducing inrush current and starting shock), it exhibits excellent adaptability to heavy-duty and impact-loaded applications, effectively isolating torsional vibrations while ensuring stable operation of the equipment unit.

Main foundry business scope and capacity:

To cast 104-based aluminum alloy parts, HT150-250 cast iron parts, 45# steel-based various types of carbon steel castings. The production capacity of aluminum castings is 100 tons/month, and the production capacity of cast iron and steel parts is 100 tons/month. The company can provide customers with one-stop service of rough casting and processing. Mass production using die casting, small batch parts using sand casting.

Among them, cast steel (alloy steel) is the optimization and reorganization of the company's casting division and the original branch (Yunan Zhongxing Wear-resistant Materials Co., Ltd.) in 2023, fully combining the advantages of both parties, that is, the combination of technological innovation and mature management, aiming at common customer terminals, reducing marketing costs, and also allowing customers to obtain the convenience of one-stop after-sales service. The main products are related to electric power, mining, cement, ports, waterway dredging metal wear-resistant parts, product materials are metal matrix ceramic composite materials, high chromium, high manganese, alloy steel and so on.