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電動扭矩扳手的行星齒輪作用是什么

來源:http://csbdjy.com日期:2022-03-23 發(fā)布人:admin

電動扳手采用了兩級行星齒輪機構(gòu),電機轉(zhuǎn)動帶動高速級行星齒輪機構(gòu)的太陽輪,而齒圈與殼體固聯(lián),扭矩則由系桿傳送到低速級行星齒輪機構(gòu)的太陽輪。低速級行星齒輪機構(gòu)的齒圈則與傳感器相聯(lián)后通過傳感器固定于殼體上,同時扭矩由系桿傳遞給扳手頭,由扳手頭實現(xiàn)對螺栓的擰緊。為對扭矩扳手的扭矩進行控制,需要測量扳手頭的扭矩。

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.
而由于扳手頭是旋轉(zhuǎn)的,所以不能直接在上面貼應(yīng)變片,否則,電線會纏繞在扳手頭上而被卷斷。若采用集流環(huán)裝置,則會使扳手體積大、成本也高且測量精度低。為此我們利用行星齒輪機構(gòu)動力分流特點,將傳感器彈性體一端通過齒輪與低速級的齒圈嚙合,另一端則用銷與殼體固聯(lián),在彈性體上貼應(yīng)變片,使其感受齒圈的扭矩。這樣,只要確定低速級行星齒輪機構(gòu)中齒圈(傳感器)與系桿之間的扭矩關(guān)系,即可通過監(jiān)測齒圈的扭矩而間接測量扳手頭扭矩。
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.
由于采用了行星齒輪機構(gòu),使得電動扳手傳遞功率大、扭矩輸出較穩(wěn)定、沖擊小,且很容易實現(xiàn)對扭矩和轉(zhuǎn)速的控制,因而電動扳手的應(yīng)用也越來越廣泛。
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.
電動扳手的扭矩分析如前所述,電動扳手的扭矩是通過低速級行星齒輪機構(gòu)的系桿輸出的,而傳感器測量的則是齒圈的扭矩,所以,要實現(xiàn)對扳手扭矩的控制,需要找出系桿與齒圈之間的扭矩關(guān)系星齒輪機構(gòu)了電動扳手動力傳遞及旋轉(zhuǎn)軸扭矩的測量問題。原理新穎、裝置可靠。
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://csbdjy.com