【Weekly Topic】Discussion on high and low speeds, light and heavy loads
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For us office workers, once the fifth day of the New Year passes, the New Year is essentially over, and then daily work begins once again. First and foremost, I wish everyone success in their work and all the best in the new year! Now let’s move on to this week’s topic: When it comes to equipment management, we often come across certain terms when researching information, such as “normal temperature and normal pressure.” For those who have been working in this field for many years, these terms are not a problem, but for beginners, they represent vague technical terms that can make it difficult for them to understand what exactly they mean. This leads to this week’s topic: This week’s topic: Are there specific values for \"high speed at light load, low speed at heavy load\" in equipment management? How do you understand this word? We welcome everyone to actively participate in the discussion! Call for weekly topics and daily questions (prizes for participation): http://bbs.hcbbs.com/thread-1373282-1-1.html Summary post of weekly topics: http://bbs.hcbbs.com/thread-1404940-1-1.html
High speed for light loads, low speed for heavy loads – it should be a relative concept.
Yes, high and low, light and heavy are all relative concepts.
High and low, light and heavy are relative concepts; in practice, it is determined by experience.
There should be design ratings for speed and load, and distinctions should be made based on these rated values
Light, heavy, high, and low are relative concepts; there is no standard. There are certain conventions in the industry; for example, in the machinery sector, a high rotation speed is considered to be above 10,000 revolutions per minute, while several thousand revolutions per minute is regarded as a medium speed, and a few hundred or dozens of revolutions per minute is considered a low speed. On highways, speeds over 120 miles per hour are considered high speeds, while speeds below 40 miles per hour are considered low speeds. Regarding load capacity, trucks, trains, and ships all have their own \"standards\"; in the machinery industry, the weight referred to for different equipment varies as well, so it is necessary to consider each situation on its own.
In my understanding, the relative load on the equipment is lower when it is operating at high speeds, while it is higher when operating at low speeds； For example, a car consumes less fuel at high speeds, while it consumes more fuel at low speeds ；
I think the principle is similar to riding a bicycle: at the beginning, or when riding slowly, more force is required, but as time goes on, less effort is needed. The load, that is, the energy, is directly manifested as force or torque. The speed, on the other hand, generally refers to the rotational speed of moving equipment. Another point is that the slower the speed, the more work is required to overcome frictional resistance or other types of resistance.
It’s as if the car has high power at low speeds when it starts moving, but once the speed increases, the power decreases.