— 7 —
Table 4 Deviation of Perpendicularity and Curvature
Measuring
Position
Elevating Height H(m)
＜
7
7-30
＞
30
Deviation
（
mm
）
|A
1
-A
2
|
4
6
8
|B
1
-B
2
|
3.2.9.4 See Figure 8 for mounting of tail pulley shaft and see Table 5 for requirement on
deviation.
Table 5 Installing Deviation of Tail Pulley Shaft
Measuring Position
Elevating Height H(m)
＜
7
7-30
＞
30
Deviation
（
mm
）
|B
1
-B
2
|
5
7
9
|A
0
-A
1
|
3
5
7
3.3 Adjustment
3.3.1 Adjustment of Tensionness of Bucket Belt (Tensioner of Screw Rod)
3.3.1.1 Turn the screw rod with spanner and push the bearing housing of tail pulley
downwards to tension the bucket belt; if turning the screw rod conversely, the bearing housing
will be pushed upwards.
3.3.1.2 Adjust the tensioner at another side by using the same method. During the
adjustment, the height of bearings at two sides should be same.
3.3.1.3 After tensionness is adjusted, the fixing nuts must be fastened so as to prevent
elevator from becoming loose in the running process.
3.3.1.4 Gravity tensioner can be used to adjust the tensionness of bucket belt through
increasing or reducing the balance.
3.3.2 Adjustment of Return Retainer (See Figure 9)
3.3.2.1 Open the sight cover of the elevator head base.
3.3.2.2 Adjust the gap between return retainer and bucket and keep it at 5-10mm.
3.3.2.3 Fix the return retainer and close the sight cover.
3.4 Unloaded Trial Run
3.4.1 Preparation prior to Trial Run
3.4.1.1 Add the lubricator.
3.4.1.2 Open the discharging flapper of elevator foot and get rid of the impurities inside.
3.4.1.3 Check to see if bucket belt has proper tensionness, straight joint and correct lap
joint direction.
