ছবি - ইন্টারনেট
বসন্তের আগেই কোকিলহারা দেশ, ছুটি ঘোষণা রাজ্যে
February 7, 2022, 1:57pm
আন্তর্জাতিক
প্রয়াত সুর সরস্বতী লতা মঙ্গেশকর । গোটা দেশ যখন বাগদেবীর আরাধনায় মগ্ন ঠিক তখন ই স্তব্ধ হলো কোকিল কন্ঠীর কন্ঠ । সুর হারালো গোটা দেশ । করোনা আক্রান্ত হয়ে গত ৮ ই জানুয়ারি মুম্বাই এর ব্রিচ ক্যান্ডি হাসপাতালে ভর্তি হন লতাজী| করোনার সাথে যুগলবন্দী হয়ে এসেছিলো নিউমোনিয়া । একেই বয়স ৯২, তার ওপর কঠিন ব্যাধির আক্রমণ তাই তাঁর সুস্থতা নিয়ে বেশ চিন্তিত ছিলেন চিকিৎসকরা । তড়িঘড়ি তাই তাঁকে আই সি ইউ তে রাখা হয়। কিন্তু আর শেষ রক্ষা হলো না। রবিবার দুপুর তিনটে থেকে চারটে পর্যন্ত তার প্রভাত কুঞ্জর বাড়িতে শেষ শ্রদ্ধা জানানো হয় প্রয়াত গায়িকা কে .সন্ধ্যা সাড়ে ছটায় মুম্বাই এর শিবাজী পার্ক কে শেষকৃত্য সম্পন্ন হয় ভারতরত্ন লতা মঙ্গেশকর এর। সেখানে উপস্থিত ছিলেন প্রধানমন্ত্রী নরেন্দ্র মোদি । কিংবদন্তির প্রয়াণে ট্যুইটারে শোক প্রকাশ করেন রাজ্যের মুখ্যমন্ত্রী মমতা বন্দ্যোপাধ্যায়, সেই সঙ্গে তিনি সোমবার রাজ্যে অর্ধ দিবস ছুটি ঘোষণা করেন এবং জানান আগামী পনেরো দিন রাজ্যে বাজবে লতা মঙ্গেশকরের গান। এছাড়া কিংবদন্তির প্রয়ানে ট্যুইটারে শোক প্রকাশ করেছেন শ্রেয়া ঘোষাল,ইমন চক্রবর্তী,রূপম ইসলাম সহ সঙ্গীত জগতের বিভিন্ন দিকপালরা।
Keywords : Lata Mangeshkar, Mamata Banerjee, Narendra Modi, Corona, Pneumonia, Singer
Comments
Portable balancing machines have gained immense popularity in various industries due to their convenience and efficiency in balancing rotors. These machines, also known as portable balancers, enable users to achieve precise dynamic balancing across a wide range of applications, including turbines, fans, augers, centrifuges, and other rotating equipment. Their portability allows for easy transportation and setup, making them ideal for on-site balancing tasks.
The main purpose of balancing machines is to eliminate static and dynamic unbalance in rotors, which can lead to increased wear and tear on machinery, operational inefficiencies, and safety hazards. By incorporating a mechanism that accelerates the rotor to a specified rotation frequency and a measuring system to determine corrective measures, portable balancing machines play a crucial role in maintaining operational efficiency. Many users prefer DIY solutions, leveraging their understanding of engineering and machinery to create custom balancing setups that can deliver high-quality results without the costs associated with commercial machines.
When discussing portable balancing machines, it's essential to understand the various types available. These machines can generally be categorized into two main types: soft bearing machines and hard bearing machines. Soft bearing machines employ flexible supports and are designed for applications involving moderate rotational speeds. They typically feature spring suspensions or similar designs, which enable precise measurements of oscillations and vibrations caused by rotor imbalances. Their ability to balance rotors at low frequencies makes them suitable for a wide variety of applications.
Hard bearing machines, in contrast, use rigid supports that possess a higher natural frequency than the maximum speed of the rotor. This design allows for more versatile applications and enables high-precision balancing even at low speeds. Hard bearing machines are commonly favored in more extensive industrial settings due to their capability of dealing with heavier and more complex rotors with strict balance quality requirements. They often incorporate sophisticated measuring systems, including advanced sensors and computing systems, to allow for accurate adjustments based on the collected data.
The construction of portable balancing machines typically consists of a robust bedframe that supports the rotor in motion. Different projects may call for various designs of supports, including adjustable spindle supports or specialized framework to accommodate different types of rotors. The engineering of these machines must consider the natural frequencies involved, ensuring that the design supports proper vibration measurement without causing interference during the balancing process.
Vibration sensors are critical components of portable balancing machines. They monitor the oscillations of the rotor and the surrounding structure during the balancing process, enabling operators to identify and correct imbalances effectively. The selection of appropriate sensors, including optical sensors, force sensors, and other vibration analyzers, plays a vital role in achieving accurate results.
Moreover, portable balancing machines come with various attachments and auxiliary devices that enhance their functionality. For instance, integrating a laser tachometer allows for precise measurements of rotational speed, which is crucial for balancing processes. Magnification stands can also assist in holding components securely in place while balancing, improving measurement accuracy during operations.
The manufacturing of these balancing machines is witnessing an upward trend, driven by a growing desire for in-house production. Independent manufacturers seek to reduce costs while maintaining the quality of the balancing process through DIY approaches. Suppliers of portable balancing machines and their components provide various resources and guidance to aid customers in constructing their machines, offering detailed information on manufacturing, operational checks, and design features. This interaction contributes significantly to the expanding market for portable balancing machines.
As the market evolves, the performance standards for balancing machines remain paramount. In industries where precision is critical, meeting international standards, such as ISO 1940-1, for balance quality is necessary. Users of portable balancing machines must adhere to these guidelines, ensuring that their rotors are balanced to prevent excessive vibration, wear, and potential system failures.
In conclusion, portable balancing machines represent an essential tool in modern industrial applications. They enable efficient and accurate balancing of various rotating components, ensuring optimal performance and longevity of machinery. The versatility of these machines accommodates different user needs and fosters innovation in DIY manufacturing. As industries continue to prioritize efficiency and cost-effectiveness, the demand for portable balancing machines is expected to rise, ultimately leading to advancements in technology and methodology in the field of dynamic balancing.
Article taken from https://vibromera.eu/