Table des Matières
Publicité
Programme de sélection du frein (exemple)
B rake selecti on Program (Example)
Atwell International Job Reference
Customer Reference
Lift system variables
Lift capacity "Q"
Car mass "P"
Car load balance
Counterweight mass
Lift speed
Roping ratio
Rope speed
Number of ropes
Rope diameter "d"
Rope pitch
Spring Stack Configuration
Spring Thickness
Number of Disc Springs
Number of spacers
Groove data - undercut "U" groove
Length of jaws
percentage of groove undercut
Width of undercut
Rope Brake Clamping Force "F"
Rope contact area per jaw
Contact pressure between rope and jaws
Rope Pressure on Traction Sheave
Static Braking Force
Dynamic Braking Force
Force to overcome Out of Balance Load (OBL)
Dynamic Braking Factor "k"
Static Braking Factor "k"
Lift machine and motor data
Sheave Diameter
Gear Ratio of drive unit
Motor Nominal Speed
Motor and wormwheel inertia
Flywheel inertia
Total high speed inertia
Rotational speed of motor/flywheel etc
Kinetic energy of motor/flywheel
Kinetic energy of lift car and counterweight
Kinetic energy of ropes, cables and pulleys
Total kinetic energy to be dissipated
Dynamic Performance of Brake
Residual Braking force to overcome Kinetic Energy
Deceleration of lift ropes
Rope slide through brake at lift speed
Rope slide through brake at governor
tripping speed
Car slide at governor tripping speed
Governor Electrical tripping speed
Time of test
VGRB2 - Docume ntatio n
24/01/2008
Atwell Interna ti onal Limited
Data
630
1000
50
1315
13
21
2.5
115
50%
6.5
34200
5342
13.1
9.3
11137
9988
3090
3.23
3.60
560
36
1228
0.05
0.15
0.20
129
1653
1158
289
3100
6898
1.11
449
594
594
1.15
0.90
Page 7 of 21
W707/077
Lygon Street
Units
Comments
kg
kg
%
kg
1
m/sec
1
enter 1 for 1:1; 2 for 2:1
1
m/sec
4
mm
mm
4
Enter number 1 to 9
mm
5
4
mm
mm
Select groove width from chart
Newtons
2
mm
2
N/mm
2
o
N/mm
35
"V" groove on 40:1 D:d ratio
Newtons
Newtons
Newtons
mm
rpm
refer to manufacturer's data
2
kgm
Rads/sec
Nm
Nm
Nm
Nm
Newtons
2
m/sec
mm
mm
mm
m/sec
secs
Frein à câble VG (VGRB2) Version 1.0
Version 1.0
7
Publicité
Table des Matières
