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Pulleys are a kind of hardware products often used in the modern furniture industry and doors and windows industry. In practical applications, pulleys are generally used in a pulley group, but whether it is a pulley set in the door and window industry or a pulley set in the furniture industry. There are certain technical requirements and principles in the process. What are the principles of pulley design?Stainless steel die casting CNC turning part OEM&ODM
The so-called pulley group is composed of a number of fixed pulleys and moving pulleys, which can achieve the purpose of both saving effort and changing the direction of force. In the process of designing the pulley block, certain knowledge of mechanics needs to be taken into consideration. Therefore, the design principles of the pulley block are:
1, the number of pulleys, the principle is: n is an odd number, the rope starting from the driven pulley. When a moving pulley is used, there are three sections of rope, and then the second section of rope is added for every additional moving pulley. For example: n=5, two moving pulleys (3+2) are required. When n is an even number, the rope starts from the fixed pulley. At this time, all moving pulleys only use two ropes. For example: n=4, two moving pulleys (2+2) are required.
2. Secondly, determine the number of pulleys as required. The principle is: General: Two ropes with one moving pulley, one moving pulley with one fixed pulley. When the direction of force action is not required to change, an even number of ropes can be used to reduce one fixed pulley; to change the direction of force action, a fixed pulley needs to be added.Aluminum anodize CNC turning product OEM&ODM
To sum up, the design principles of the pulley block can be summarized as follows: Odd-moving and even-fixing; a certain dynamic allocation, even-number reduction, and change-in direction plus certain.