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电动扭矩扳手的行星齿轮作用是什么

来源:http://www.no2design.com 日期:2022-03-23 发布人:admin

电动扳手采用了两级行星齿轮机构,电机转动带动高速级行星齿轮机构的太阳轮,而齿圈与壳体固联,扭矩则由系杆传送到低速级行星齿轮机构的太阳轮。低速级行星齿轮机构的齿圈则与传感器相联后通过传感器固定于壳体上,同时扭矩由系杆传递给扳手头,由扳手头实现对螺栓的拧紧。为对扭矩扳手的扭矩进行控制,需要测量扳手头的扭矩。

The electric wrench adopts a two-stage planetary gear mechanism. The motor rotates to drive the sun gear of the high-speed planetary gear mechanism, while the ring gear is fixedly connected with the shell, and the torque is transmitted from the tie rod to the sun gear of the low-speed planetary gear mechanism. The ring gear of the low-speed planetary gear mechanism is connected with the sensor and fixed on the housing through the sensor. At the same time, the torque is transmitted from the tie rod to the wrench head, and the wrench head can tighten the bolts. In order to control the torque of the torque wrench, it is necessary to measure the torque of the wrench head.
而由于扳手头是旋转的,所以不能直接在上面贴应变片,否则,电线会缠绕在扳手头上而被卷断。若采用集流环装置,则会使扳手体积大、成本也高且测量精度低。为此十大外围档-十大靠谱网投-十大优秀的app平台排行榜利用行星齿轮机构动力分流特点,将传感器弹性体一端通过齿轮与低速级的齿圈啮合,另一端则用销与壳体固联,在弹性体上贴应变片,使其感受齿圈的扭矩。这样,只要确定低速级行星齿轮机构中齿圈(传感器)与系杆之间的扭矩关系,即可通过监测齿圈的扭矩而间接测量扳手头扭矩。
Since the wrench head is rotating, the strain gauge cannot be directly pasted on it, otherwise the wire will be wound on the wrench head and broken. If the collector ring device is adopted, the wrench will have large volume, high cost and low measurement accuracy. Therefore, we use the power split characteristics of the planetary gear mechanism to mesh one end of the sensor elastomer with the low-speed gear ring through the gear, and the other end is fixedly connected with the shell with a pin. A strain gauge is pasted on the elastomer to make it feel the torque of the gear ring. In this way, as long as the torque relationship between the ring gear (sensor) and the tie rod in the low-speed planetary gear mechanism is determined, the torque of the wrench head can be measured indirectly by monitoring the torque of the ring gear.
由于采用了行星齿轮机构,使得电动扳手传递功率大、扭矩输出较稳定、冲击小,且很容易实现对扭矩和转速的控制,因而电动扳手的应用也越来越广泛。
Due to the use of planetary gear mechanism, the electric wrench has high transmission power, stable torque output and small impact, and it is easy to control torque and speed. Therefore, the application of electric wrench is more and more widely.
电动扳手的扭矩分析如前所述,电动扳手的扭矩是通过低速级行星齿轮机构的系杆输出的,而传感器测量的则是齿圈的扭矩,所以,要实现对扳手扭矩的控制,需要找出系杆与齿圈之间的扭矩关系星齿轮机构解决了电动扳手动力传递及旋转轴扭矩的测量问题。原理新颖、装置可靠。
The torque analysis of the electric wrench is as mentioned above. The torque of the electric wrench is output through the tie rod of the low-speed planetary gear mechanism, while the sensor measures the torque of the ring gear. Therefore, in order to control the torque of the wrench, it is necessary to find out the torque relationship between the tie rod and the ring gear. The star gear mechanism solves the problems of power transmission of the electric wrench and the measurement of the torque of the rotating shaft. Novel principle and reliable device.
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The above is a detailed introduction about the manufacturers of torsion and shear wrenches. I hope it will be helpful to you If you have any questions, please contact us We will provide you with professional service http://www.no2design.com