1、打開支撐腿，額定載荷300kg下最大工作高度8m時，側向工作角度可以達到15度，正向最大角度也可以達到15度。若不打開支撐腿在額定載荷300kg下最大工作高度8m時，正向最大工作角度只能達到5度。
1, open the supporting leg, the maximum rated load of 300kg working height of 8m, the lateral working angle up to 15 degrees, the positive maximum angle can also be reached 15 degrees. When you do not turn on the supporting leg maximum working height of 8m at rated load of 300kg, the forward can only reach a maximum working angle of 5 degrees.
2、不管是側向還是正向，未打開支撐腿工作狀態是不穩定的，而打開支撐腿可以大大提高工作傾覆穩定性，實際工作中，條件允許的狀態下，應盡可能打開支撐腿，若特殊情況未使用支撐腿，工作角度不能超過5度。
2, whether the lateral or forward, not open support legs working condition is unstable, and open support legs can greatly improve overturning stability, practical work, under conditions permitting state, should be as open support legs, If special circumstances supporting leg is not used, the working angle can not be more than 5 degrees.
3、實際使用必須考慮各種影響因素，包括環境、路面、叉桿擺動及支撐腿強度等因素。雖然計算中很多地方臨界載荷已經超過額定載荷，但在使用時仍然必須滿足在額定載荷范圍內，這樣才能保證工作安全。
3, the actual use must take into account various factors, including the environment, road forks swing and the supporting leg strength and other factors. Although in many places the critical load is calculated over the rated load, but still must meet when used within the rated load range, so as to ensure safety at work.
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