China Good quality Elastic Coupling Hgtq Series / Highly-Flexible Coupling /Marine Accessory

Product Description

HGTQ Series Application:

HGTQ series high-elastic coupling is a kind of torsion type high-elastic coupling. It is suitable for other medium and high-powered gearboxes produced by our company, and is also suitable for other power transmissions mainly powered by diesel engines and motors. . The structure mainly comprises a vibration damping ring assembly, an elastic plate and a main and driven end connecting member, which can effectively compensate radial, angular and axial displacement of adjacent machinery, absorb vibration, reduce resonance speed, and thereby improve shafting torsion. Features to extend equipment maintenance intervals and service life.
This series of high-elastic couplings has a rated torque range of TKN30=5-31.5kNm for a total of 9 size groups. Nearly 1 hundred HCT1100, HC1200, HC1250 and HCQ1400 have been matched before the official production. After nearly 5 years of trials, this series of high-elastic couplings is a new cost-effective product.

Products Introduction:
    The Company’s high elastic couplings digesting and absorbing German advanced technology were the result of self-R&D together with HangZhou Research Institute of Marine Gearbox, being recognized by CCS, ZY, BV, ABS, RINA, NK and LR. The company has passed through ISO9001:2008 accreditation.

    The Company has made itself available with perfect means of inspections. It has R&Ded dynamic tester on high elastic coupling – a fully independent intellectual right of our own – the first 1 of this type in China.

    Realizing zero rate of service due to product quality for 6 years in a row and achieving average use life of 7 to 8 years for easy worn-out parts, the Company has been the top 1 in this line in China in terms of capacity and market share.

    The concept of service: being devoted to ensuring customer satisfactions. The concept of management of maintaining standard institutions and advanced manufacturing and inspection equipment, being brave for innovations and making continuous improvements is essential to ensure quality products. A cordial welcome will be given for visit and guidance. 

HGTQ structure introduction:
1. The elastic element is ring-shaped, and the vent hole is arranged in the middle of the ring, which is beneficial to ventilation and heat dissipation. The diaphragm part can attenuate the axial reaction force, and protect the main and auxiliary machines. The 2 connection modes commonly used at the output end are applicable. In different installation spaces and working conditions, special connection methods can also be designed according to user requirements. The single-row elastomer has low relative cost, but the dynamic stiffness is relatively large, which is suitable for medium and high-speed diesel engines.



High-elastic products approved by the world’s multinational classification societies

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HGTQ Series products Suitable for independent rigid or elastic power transmission devices installed by the host,
Rated torque range 0.8-31.5kN.m
90% of the flexible installation of the “ADVANCE” light gearbox

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flexible coupling

What are the temperature and environmental limitations of flexible couplings?

Flexible couplings are designed to operate within certain temperature and environmental limitations to ensure optimal performance and longevity. The specific limitations may vary depending on the type and material of the coupling. Here are the general considerations:

  • Temperature Range: The temperature range in which a flexible coupling can operate is crucial. High temperatures can affect the material properties, leading to reduced flexibility and potential failure. Low temperatures can cause the material to become brittle and lose its ability to accommodate misalignment. It’s essential to choose a coupling suitable for the intended temperature range of the application.
  • Corrosive Environments: In environments with corrosive substances, such as acids, chemicals, or saltwater, it is essential to select a flexible coupling made of materials that are resistant to corrosion. Stainless steel and certain polymers are commonly used in such environments to prevent degradation and maintain the coupling’s integrity.
  • Hygienic Environments: For applications in food processing, pharmaceuticals, or cleanrooms, hygienic design is critical. Flexible couplings used in these environments should be easy to clean, made of materials that are non-toxic and resistant to contamination, and free from crevices or pockets where debris can accumulate.
  • Explosive or Hazardous Atmospheres: In environments where explosive or hazardous gases, vapors, or dust are present, flexible couplings with anti-static properties or explosion-proof certifications may be necessary to prevent the risk of ignition and ensure safety.
  • Outdoor Applications: For outdoor installations, flexible couplings should be able to withstand exposure to weather conditions, UV radiation, and temperature fluctuations. Couplings with weather-resistant properties are suitable for such applications.
  • High-Speed Applications: In high-speed applications, the centrifugal forces on the flexible coupling increase with rotational speed. Couplings designed for high-speed applications should be balanced to minimize vibrations and ensure smooth operation.
  • Shock and Impact Loads: Flexible couplings used in applications with significant shock or impact loads should have the ability to dampen and absorb these forces to protect connected equipment from damage.
  • Continuous vs. Intermittent Duty: Some flexible couplings are designed for continuous-duty applications, while others are suitable for intermittent duty or start-stop operations. The coupling’s design and material should match the specific duty cycle requirements.

It is essential to consult with the coupling manufacturer or supplier to understand the temperature and environmental limitations of a specific coupling model. Proper selection and application of flexible couplings within their defined limitations contribute to reliable and efficient performance in various industrial and mechanical systems.

flexible coupling

How does a flexible coupling handle torsional vibrations in rotating machinery?

A flexible coupling is designed to handle torsional vibrations in rotating machinery by providing a degree of flexibility and damping. Torsional vibrations are oscillations that occur in the drivetrain due to torque variations, sudden load changes, or other transient events. These vibrations can lead to resonance, excessive stress, and premature failure of components.

Flexible couplings mitigate torsional vibrations through the following mechanisms:

  • Torsional Compliance: Flexible couplings have an element, such as an elastomeric insert, that can deform or twist to absorb torsional shocks. When the drivetrain experiences torsional vibrations, the flexible element flexes, effectively isolating and dampening the vibrations before they propagate further.
  • Damping: Many flexible couplings have inherent damping properties, especially those with elastomeric components. Damping dissipates the energy of the torsional vibrations, reducing their amplitude and preventing resonance from occurring.
  • Tuned Design: Some flexible couplings are specifically designed with specific torsional characteristics to match the drivetrain’s requirements. By tuning the coupling’s stiffness and damping properties, engineers can ensure optimal torsional vibration control.
  • Torsional Stiffness: While flexible couplings provide flexibility to absorb vibrations, they also offer a degree of torsional stiffness to maintain the torque transmission efficiency between the shafts.

It is important to select the appropriate flexible coupling based on the specific torsional characteristics and requirements of the rotating machinery. Different applications may demand different types of couplings with varying levels of flexibility and damping. High-performance flexible couplings can effectively minimize torsional vibrations, protecting the drivetrain and connected equipment from excessive stress and potential damage.

Additionally, proper alignment of the flexible coupling during installation is crucial to ensure its optimal performance in mitigating torsional vibrations. Misalignment can introduce additional stresses and exacerbate torsional issues in the system. Regular inspection and maintenance of the flexible coupling will help identify any signs of wear or damage that may affect its ability to handle torsional vibrations effectively.

flexible coupling

How does a flexible coupling protect connected equipment from shock loads and vibrations?

Flexible couplings play a crucial role in protecting connected equipment from shock loads and vibrations by providing damping and isolation capabilities. When machines or mechanical systems experience sudden shock loads or vibrations, the flexible coupling acts as a buffer, absorbing and dissipating the impact, thereby reducing the transmitted forces and protecting the equipment. Here’s how flexible couplings achieve this:

  • Damping of Vibrations: Flexible couplings are often made from materials that exhibit damping properties. When vibrations are transmitted through the shafts, the flexible coupling’s material can absorb a portion of the vibrational energy, converting it into heat. This dissipation of energy helps reduce the amplitude of the vibrations and prevents them from propagating further into the connected equipment.
  • Vibration Isolation: In addition to damping vibrations, flexible couplings also offer a degree of vibration isolation. They are designed to decouple the two shafts, which means that vibrations occurring on one shaft are not directly transmitted to the other shaft. This isolation effect prevents vibrations from propagating across the entire system and minimizes the impact on sensitive equipment or nearby components.
  • Shock Absorption: When the connected machinery experiences sudden shock loads, such as during a startup or abrupt changes in load, the flexible coupling can act as a shock absorber. The coupling’s design allows it to deform slightly under the impact, absorbing and distributing the shock energy. This prevents the shock from being directly transferred to the connected equipment, reducing the risk of damage or premature wear.
  • Misalignment Compensation: Flexible couplings are capable of compensating for misalignment between the shafts. Misalignment can lead to additional stresses and vibrations in the system. By allowing for some degree of angular, parallel, and axial misalignment, the flexible coupling reduces the forces transmitted to the connected equipment and the supporting structures.
  • Reduction of Resonance Effects: Resonance is a phenomenon that occurs when the natural frequency of a system matches the frequency of external vibrations, leading to amplified vibrations. Flexible couplings can help avoid resonance effects by altering the system’s natural frequency and providing some level of flexibility that damps the resonance response.

By incorporating a flexible coupling into the drivetrain or power transmission system, equipment manufacturers and operators can significantly improve the reliability and longevity of connected machinery. The coupling’s ability to dampen vibrations, isolate shocks, and compensate for misalignment contributes to a smoother and more stable operation, reducing maintenance requirements and enhancing overall system performance.

In summary, flexible couplings act as protective elements, shielding connected equipment from shock loads and vibrations. Their ability to dampen vibrations, isolate shocks, and compensate for misalignment contributes to a smoother and more reliable operation of various mechanical systems.

China Good quality Elastic Coupling Hgtq Series / Highly-Flexible Coupling /Marine Accessory  China Good quality Elastic Coupling Hgtq Series / Highly-Flexible Coupling /Marine Accessory
editor by CX 2024-04-26


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