The “Vielastic” couplings.jpg)
1. The “Vielastic” couplings are designed to generate turning moments and mechanical gears powered by electric engines. The turning moment is generated by an elastic element, a rubber rim 3 (diagram 1) pressed by metal disks 2 to the half couplings1 and the rim is diametrically cut at a certain place and through this it can be assembled without offsetting the half couplings.
1). The “Vielastic” couplings have air-cushion, compensation and strength qualities. The mechanisms, which they are part of increase the inter repair period because the dynamical pressures are decreased. When the nominal turning moment is generated the torsion angle is 6o and at short term maximum pressure, which is three times higher than the nominal turning moment, the torsion angle is about 15o. When such couplings are used it is not necessary the geometrical axes of the leading and lead shaft to be precisely set. This relieves the execution of the assembly works a lot.
At hard regime of pressure the elastic element lasts more than 4 years while the metal parts have unlimited period of endurance.
2). The dimensional and joining sizes of the “VIELASTIC” couplings are specified in the attached diagram and tables.
2. Dimensional and joining sizes
|
Sign
|
Dimensions in mm
|
|
D [mm]
|
D1 [mm]
|
d [mm]
|
d1H7
min-max [mm]
|
d'1H7 [mm]
|
L [mm]
|
l [mm]
|
c [mm]
|
|
100- 1
|
100
|
48
|
33
|
11 ÷ 23
|
16 ÷ 22
|
66
|
28
|
20
|
|
135 - 3
|
135
|
69
|
48
|
14 ÷ 33
|
22 ÷ 28
|
80
|
35
|
22
|
|
175 - 7
|
175
|
90
|
64
|
19 ÷ 39
|
28 ÷ 35
|
112
|
45
|
38
|
|
210 - 15
|
210
|
110
|
80
|
25 ÷ 51
|
35 ÷ 42
|
132
|
55
|
38
|
|
260 - 30
|
230
|
144
|
95
|
29 ÷ 61
|
42 ÷ 55
|
156
|
65
|
44
|
|
310 - 60
|
310
|
164
|
125
|
37 ÷ 81
|
50 ÷ 55
|
171
|
75
|
41
|
|
370 - 120
|
370
|
232
|
150
|
37 ÷ 92
|
55
|
196
|
85
|
46
|
|
400 - 240
|
400
|
260
|
160
|
37 ÷ 102
|
60
|
220
|
95
|
50
|
|
450 - 400
|
450
|
260
|
160
|
54 ÷ 112
|
75
|
265
|
110
|
71
|
|
550 - 700
|
550
|
280
|
180
|
69 ÷ 132
|
80
|
336
|
130
|
120
|
|
№
|
Sign
|
Rotation moment
|
Max. rotation frequency
|
Twine angle
|
power of max. turnovers
|
Admissible exchange
|
|
Nominal.
|
Max.
|
Angle crossing of axises
|
Radial displacement
of axises
|
Axis displacement
|
|
Y
|
Jet moment
|
Z
|
Jet power
|
Inner Х
|
Jet power
|
|
Nm
|
Nm
|
min -1
|
gard.
|
N
|
gard.
|
Nm
|
mm.
|
N
|
mm
|
N
|
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10*
|
11
|
12
|
13**
|
|
1
|
100- 1
|
10
|
30
|
3500
|
7
|
-
|
1
|
8
|
0.4
|
72
|
1.3
|
58
|
|
2
|
135 - 3
|
30
|
90
|
3500
|
7
|
-
|
1
|
8.5
|
0.6
|
108
|
1.5
|
75
|
|
3
|
175 -7
|
70
|
210
|
3000
|
6
|
-
|
3
|
8.5
|
1.3
|
234
|
2.5
|
200
|
|
4
|
210 - 15
|
150
|
400
|
2500
|
9
|
1000
|
3
|
12
|
1.5
|
675
|
2.5
|
250
|
|
5
|
260 - 30
|
300
|
900
|
2000
|
8
|
1000
|
4.5
|
14
|
2.5
|
1370
|
3.5
|
350
|
|
6
|
310 -60
|
600
|
1800
|
2000
|
7
|
1700
|
4.5
|
25
|
2.5
|
1750
|
3.5
|
700
|
|
7
|
370 - 120
|
1200
|
3600
|
1600
|
7
|
1800
|
6.5
|
180
|
3.0
|
4800
|
5.0
|
1500
|
|
8
|
400 - 240
|
2400
|
7200
|
1600
|
7
|
2500
|
6.5
|
170
|
2.5
|
4000
|
4.5
|
2020
|
|
9
|
450-400
|
4000
|
12 000
|
1300
|
10
|
3500
|
9
|
160
|
4.5
|
4500
|
6.0
|
3600
|
|
10
|
550-700
|
7000
|
21 000
|
1100
|
11.5
|
6500
|
10
|
160
|
5.0
|
5000
|
7.0
|
5600
|
*The radial dislocations Z depend on the revolutions. The dislocation Z for consecutive number for coupling No 1 to No 6 is valid at 1450 min -1. For No 7 and No 8 at 950 min -1 , for No 9 and No 10 at 640 min -1.
When the revolutions are increased the quantity is divided by the multiplier of the revolutions.
** The quantities, specified in table 13, concern the allowed axis dislocation specified in table 12. Through interpolation the quantities at smaller axis dislocations could be found.
!. These are the most important parameters when ordering these types of couplings:
(1) diameter of the hole of the first disk (d1): 11....132 mm;
(2) diameter of the hole of the second disk (d’1): 16...80 mm:;
(3) dimensional diameter for the elastic element (D), chosen for the required nominal moment: 100..550 mm.
!. The exemplary symbol of a coupling having a required nominal turning moment MH=150 Nm and the diameter of the hole of the first disk less than 25 mm, and of the second one – 38 mm is as follows:
“Vielastic”- 210-15
5) Despite the great compensation qualities of the couplings it is desirable that the assembly should be accurate. That way the exploitation term of the elastic element is prolonged.
