雙塔俯仰式纜機(jī)英文文獻(xiàn)翻譯-全文預(yù)覽
【正文】 天至少一次。一旦此數(shù)字出現(xiàn)在顯示器上時(shí)就必須中止纜車橫移，同步按鈕會(huì)將返程滑輪與螺桿型限位開關(guān)和位置指示器分離開，將吊車橫移的速度限制在 v20%的額定速度。一旦出現(xiàn)不一致，可校正驅(qū)動(dòng)滑輪和返程滑輪。由于兩個(gè)纜索槽中纜車橫移纜索的張力不同和纜索滑動(dòng)的不同，結(jié)果會(huì)導(dǎo)致兩槽內(nèi)的比克瑞特內(nèi)套出現(xiàn)不同程度的磨損。車削的速度是24m/sec. 當(dāng)比克瑞特內(nèi)套的磨損到只有約 20mm 厚時(shí)，應(yīng)該馬上更換。 因此，必須 經(jīng)常檢查驅(qū)動(dòng)滑輪槽的深度。通過裝在返程滑輪上的夾具，也可使返程滑輪軸向調(diào)整。然后將纜車運(yùn)行到顯 示器已經(jīng)設(shè)定的參照點(diǎn)為止。如果發(fā)生纜車到了那個(gè)位置而顯示的纜車位置的值與實(shí)際距離不相符情況時(shí)，則必須對(duì)螺桿型限位開關(guān)和位置指示器進(jìn)行校正。 從原則上說，因?yàn)榭紤]到行駛區(qū)域內(nèi)可能會(huì)有更多的障礙，故螺桿型限位開關(guān)配有更多的觸點(diǎn)。 為了從根本上 確保纜車的減速，塔機(jī)配備了兩個(gè)額外的靜止監(jiān)測(cè)限位開關(guān)。位置指示器也應(yīng)顯示出相應(yīng)的值。在更換這些部件時(shí)必須在循環(huán)計(jì)數(shù)器上讀取各自的工作循環(huán)數(shù)并記錄結(jié)果。因此，循環(huán)計(jì)數(shù)器設(shè)置位馬達(dá)在同一方向運(yùn)行約 l Os 后為一次，并將余下的另一半程計(jì)算在內(nèi)。 最后，裝在跑索兩端的杠桿限位開關(guān)還可阻止吊車橫移。通常，馬達(dá)的轉(zhuǎn)矩通過雙槽驅(qū)動(dòng)滑輪傳遞給纜車橫移索，故必須定期檢查以確保兩槽內(nèi)的鋼索同步運(yùn)行。 由于當(dāng)?shù)氐那闆r，在施工現(xiàn)場(chǎng)的某些區(qū)域有障礙物。 纜機(jī)通常由駕駛室控制，駕駛室可在一根長(zhǎng)纜索 上來回機(jī)側(cè)和計(jì)數(shù)器側(cè)之間。 尾塔腳下的機(jī)房?jī)?nèi)僅裝有控制起重塔桿仰俯用的絞盤。 纜機(jī)的兩個(gè)轉(zhuǎn)動(dòng)起重塔桿，中間安裝跑索，布置在左岸已澆筑的標(biāo)高為 185m 的 8 號(hào)壩塊上和標(biāo)高為 160m 的縱向圍堰上。 at the shaft of which is also fitted :the screwtype limit switch and the position indicator, just also the tachometers for measuring the speed and for control of a possible over speed. Although the screwtype limit switch and the position indicator are driven by the nondriven return pulley, it is unavoidable that after a duration of operation occurs a certain missindication, so that the correction will have to be made (see chapter Traversing Limit Switches and Position Indicators). For safety reasons have been installed, however, at the first and at the last rope carrier additional limit switches for monitoring the crab speed. Since these limit switches cannot shift out of their set position, the signal is absolute. Finally the crab traversing is then stopped by a lever limit switch attached at each end of the track rope. The tachometer for monitoring a possibly occurring over speed disconnects the crab traversing gear at 115% rated speed by emergency off. For providing the operation and maintenance team with information concerning the plant output, the crab traversing gear is equipped with an operation hour39。s cabin that is movable between the machine side and the counter side on a long cable. The second way is to control the cable crane by a wireless portable control unit. For each crane there is one mobile unit. The third possibility to control the winches is the local control device nearby the machines for the hoist, crab traversing and luffing systems . The local control device is for purpose of easy adjustment and repairing. Because of the local situation, there are certain areas of the working field with obstacles. These areas are locked by the programmable puter control system. For the control systems see also the Electrical documents of ABB Company. The crab traversing winch is driven by a DCmotor that allows for an in
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