У дома > Блог > Индустриална информация > Прилагане на пружина с постоянна сила в механизма за балансиране на собственото тегло на устройството за вземане на проби

Прилагане на пружина с постоянна сила в механизма за балансиране на собственото тегло на устройството за вземане на проби

източник:Qianye Precision време:2022-9-14

At present, various sample probes and reagent probes are used in medical laboratory equipment to suck samples, add samples, suck and test u, add reagents, measure and other operations. Most of the devices used in these action combinations are intelligent sampling devices, and the system used can automatically process data. Due to the full function and complex mechanism of the sampling device, the self weight of the system device is large, This brings higher and higher performance and power requirements to the driving motors of various sampling devices.

The self weight balance mechanism is set between the sampling device and the main structure and is composed of a lifting device and a пружина с постоянна сила. The lifting device is composed of gears, racks and linear guide rails. The gears are driven by the motor and fixed on the main structure with the motor. The rack and the gear mesh to move up and down. The rack is fixed on the linear guide rail and the sampling device is fixed on the rack, The lifting device can also be composed of gear combination roller chain or synchronous belt, ball screw or flexible rope.

The upper end of the пружина с постоянна сила is fixed on the main structure, and the lower end of the пружина с постоянна сила is wound on a roll shaft on the sampling device. The roll shaft can rotate with the rise and fall of the sampling device. According to the height of the rise and fall of the sampling device, the excess part of the пружина с постоянна сила can always be wound on the roll shaft. No matter how long the пружина с постоянна сила is stretched, its own force wound on the roll shaft is constant, and the tension of the пружина с постоянна сила is greater than or equal to the rack The sum of the gravity of the linear guide rail and the sampling device.

  Пружина с постоянна сила is made of steel strip. When it is straightened by external force, the spring will naturally roll back and produce elastic force. The advantages of constant force spring over traditional wire spring are as follows:

  1.High elastic output can be achieved in a very small device space.

 2.Maintain a certain elasticity in all strokes. The preload stroke is short, that is, the required elasticity can be achieved through a short stroke. The original long-term is smaller than the line spring, and the stroke is unlimited.

  When designing or specifying a пружина с постоянна сила, трябва да се вземат предвид много основни инженерни параметри. Материал, издръжливост на умора, натоварване на опън, въртящ момент и триене, скорост и ускорение, монтаж, съображения за безопасност и среда на приложение са ключови фактори.

Shenzhen Qianye Precision Metal Co., Ltd. is a global spring manufacturer with more than 20 years of spring manufacturing experience. As a professional spring supplier, we can provide all kinds of spring springs, as well as the application design and solutions of all kinds of springs. We sincerely suggest that customers obtain consulting services from our R&D engineers at the initial stage of product introduction and development. Assist in product design, development and proofing according to your needs, so that your products can find the best solution to meet your application needs.

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