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液壓機(jī)拉伸試驗(yàn)機(jī):拉力測試機(jī)偏移常見故障檢修

瀏覽量:2105? 來源:www.yiaomachine.com??作者:全力測試 時(shí)間:2019-10-12

  液壓萬能試驗(yàn)機(jī):拉力試驗(yàn)機(jī)位移出現(xiàn)故障后的維修步驟:

  Hydraulic universal testing machine: Maintenance steps after displacement failure of tension testing machine:

  1、首先對(duì)位移傳感器進(jìn)行檢查:

  1. First, the displacement sensor is checked.

  因?yàn)槔υ囼?yàn)機(jī)系統(tǒng)是一個(gè)閉環(huán)系統(tǒng),要想知道是哪個(gè)部分出現(xiàn)了問題,就一定要切斷系統(tǒng)中的回路,使其成為一個(gè)開環(huán)的系統(tǒng)。從而可以判斷試驗(yàn)機(jī)的傳感器信號(hào)是不是正常。這個(gè)時(shí)候也要斷開位移傳感器的反饋信號(hào),使其成為開環(huán)。此時(shí)工作站發(fā)出一個(gè)控制動(dòng)作器移動(dòng)的信號(hào),對(duì)傳感器的反饋值進(jìn)行測量,在幾次重復(fù)之后,傳感器的反饋數(shù)據(jù)值可以組成一條直線,這個(gè)直線是線性變化的,從而就可以知道傳感器是不是有問題了。

  Because the tension testing machine system is a closed-loop system, in order to know which part of the system has problems, it is necessary to cut off the loop of the system and make it an open-loop system. So we can judge whether the sensor signal of the test machine is normal or not. At this time, the feedback signal of the displacement sensor should be disconnected to make it open-loop. At this time, the workstation sends out a signal to control the movement of the actuator, and measures the feedback value of the sensor. After several repetitions, the feedback data value of the sensor can form a straight line, which changes linearly, so that we can know whether the sensor is in trouble.

  2、其次就是對(duì)拉力試驗(yàn)機(jī)的放大器單元的檢查:

  2. Next is the check of the amplifier unit of the tension testing machine.

  在已經(jīng)排除了位移傳感器的問題之后,因?yàn)槔υ囼?yàn)機(jī)的系統(tǒng)是一個(gè)閉環(huán)系統(tǒng),放大器單元的正常與否是一定要進(jìn)行檢查的,方法就是斷開放大器單元的輸出信號(hào)。將輸出接線拆除,在放大器單元加上一個(gè)直流輸入信號(hào),然后測量擺錘沖擊試驗(yàn)機(jī)放大器單元的輸出情況,在重復(fù)試驗(yàn)幾次之后,得到一個(gè)放大器單元輸出信號(hào)的線性變化趨勢數(shù)據(jù),這樣就可以知道放大器單元是不是有問題了。

  After eliminating the problem of displacement sensor, because the system of tension testing machine is a closed-loop system, whether the amplifier unit is normal or not must be checked by disconnecting the output signal of the amplifier unit. Remove the output wiring, add a DC input signal to the amplifier unit, and then measure the output of the amplifier unit of the pendulum impact tester. After repeated tests, the linear trend data of the output signal of an amplifier unit are obtained, so that we can know whether the amplifier unit is in trouble.

  3、最后就是檢查拉力試驗(yàn)機(jī)的系統(tǒng)設(shè)定是否正常:

  3. Finally, check whether the system settings of the tension testing machine are normal:

  工作站當(dāng)中的動(dòng)作器的行程正常情況下應(yīng)該是±50mm,如果與這個(gè)數(shù)字不符,那么就是系統(tǒng)設(shè)定的問題,就需要重新的設(shè)定系統(tǒng)。要是工作站的顯示板上面的顯示值依舊不正確,那么就可以判定只有重新的標(biāo)定位移系統(tǒng),才可以解決這一類的問題。

  Actuator travel in the workstation should normally be (+50mm). If it does not match this number, then it is the problem of system settings, and the system needs to be re-set. If the display value on the display board of the workstation is still incorrect, then it can be determined that only the re-positioning and moving system can solve this kind of problem.http://www.yiaomachine.com



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