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上海市农机所生产的KDV型空气加温线,在应用过程中,常挂在空间加气温,挂线时即使拉的很紧,但线有重量,仍然下垂,通电后下垂幅度更大。为了找出合适的挂线长度做了下面的小试验。将线拉紧,挂在挂线柱上,两柱之间距离5米。在两柱中间分别放0、1、2、3、4个支点,使挂线柱(支点)与支点之间距离分别为5、2.5、1.67、1.25、1米。通电前后测量下垂幅度,重复测量三次。测量结果如表,从表上可以看出,无论通电与否,空气加温线下垂幅度均随挂线距离增加而增加。下垂幅度(没通电时)、通电后总下垂幅度以
KDV type air heating line produced by Shanghai Agricultural Machinery often hangs in the space with air temperature during the application process. Even when the wire is pulled tightly, the line is still heavy and droops even after sagging. In order to find the right length of the thread, the following small experiment was done. Tension the wire, hanging in the hanging column, the distance between the two columns 5 meters. In the middle of the two columns were put 0,1,2,3,4 fulcrum points, so that the link between the column (fulcrum) and the fulcrum distance were 5,2.5,1.67,1.25,1 meters. Before and after the power measurement droop amplitude, repeated measurements three times. The measurement results are shown in the table. It can be seen from the table that no matter whether the power is on or not, the sagging amplitude of the air heating line increases with the increase of the hanging line distance. Droop amplitude (no power), the total droop amplitude after power