Working Platform
Assembly and Operating Manual
Page 24 of 52
BL 061 U Edition 06.2007
Determining the necessary number of counterweights and supporting forces for AB 650
Number of counterweights per beam (rule of thumb)
2
1
3
l
l
F
F
n
g
W
×
×
=
F
w
=
Winch traction force
2
1
78
l
l
n
×
=
F
g
=
Weight of one counterweight
(without taking into account the
length of rope and the roof
extension)!!!
1
2
5
0
L2
L1
Abspannseil
F
w
Gegengewichte
A
(Supporting force)
B
Fig. 16 Supporting force with AB 650 winch
Table 1:
Number of counterweights at 25 kg each
as well as supporting forces in kg (A and/or B) (per
beam) for winches with up to 650 kg traction force (AB 650 WINCH) with a rope length of 100 m
L1
L2
2.4m
2.6m
2.8m
3.0m
3.4m
3.8m
4.2m
4.4m
0.6m
A
operating / in arrester case
B
platform on ground
19
1042/2689
520
17
1026/2648
473
16
1013/2612
449
15
1001/2581
426
13
981 / 2531
379
11
965 / 2491
331
10
953 / 2458
308
9
947 / 2444
284
0.8m
A
B
26
1103/2860
694
24
1083/2805
647
22
1065/2758
599
20
1049/2718
550
18
1024/2651
503
15
1004/2598
431
14
987 / 2556
407
13
980 / 2537
383
1.0m
A
B
33
1164/3031
868
30
1139/2963
796
28
1117/2905
748
26
1098/2855
700
22
1067/2772
603
20
1042/2706
555
18
1022/2653
507
17
1014/2630
483
1.2m
A
B
36
1195/3120
945
34
1169/3051
897
31
1147/2991
824
27
1110/2892
727
24
1081/2814
654
22
1057/2751
606
20
1047/2724
557
1.4m
A
B
32
1153/3013
851
28
1119/2922
754
25
1092/2848
681
24
1080/2817
657
1.6m
A
B
33
1158/3030
878
29
1127/2946
780
28
1113/2910
756
1.8m
A
B
33
1162/3043
880
32
1147/3003
856
2.0m
A
operating / in arrester case
B
platform on ground
35
1180/3096
930
The supporting forces must be halved to determine the wheel forces.
1.0m breit
1
.2
3
m
O
n
ly
w
it
h
b
ra
ci
n
g
r
o
p
e
Bracing rope
Counterweights