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Rigid coupling

Rigid coupling

rigidityCouplingIn the past, it was also called fixed rigid coupling, including flange coupling, radial key flange coupling, parallel shaft coupling, clamp coupling, sleeve coupling, etc.Rigid couplings are generally simple in structure, and the manufacturing cost of coupling manufacturers is relatively low.When selecting a rigid coupling, the distance between the coupling and the support should be minimized
JMI diaphragm couplingMLZ type single flange plum blossom elastic couplingFlexible elastic coupling

     rigidityCouplingIt is composed of rigid force transmission parts, and various connecting parts cannot move relative to each other. Therefore, it does not have the ability to compensate the relative offset of the two axes. It is only suitable for the strict alignment of the connected two shafts during installation. When the shaft is relatively offset, the rigid coupling has no elastic elements and does not have the function of damping and buffering. Generally, it is only suitable for working conditions with stable load and no shock and vibration.
     Rigid couplings were also called fixed rigid couplings in the past, including flange couplings, radial key flange couplings, parallel shaft couplings, clamp couplings, sleeve couplings, etc. .Rigid couplings are generally simple in structure and low in manufacturing cost.When selecting a rigid coupling, the distance between the coupling and the support should be minimized.
     Flange rigid coupling (also known as flange coupling) is the use of bolts to connect two flange (flange) disc-type half couplings. The two half couplings are respectively connected to the two shafts with a key to achieve two Shaft connection, a rigid coupling that transmits torque and movement.Flange rigid coupling has simple structure, convenient manufacture, low cost, reliable work, simple semi-disassembly and maintenance, large transmission torque, can ensure high alignment of the two shafts, generally used for stable load , Shafting transmission with high speed or high transmission requirements.The flanged rigid coupling does not have radial, axial and angular compensation performance. If the centering of the two shafts cannot be guaranteed during use, it will reduce the service life of the coupling, the transmission efficiency and the transmission efficiency. Vibration and noise.
     According to the torque of the flange rigidity, all bolts can be used for reaming holes, or half of them can be used for reaming holes, and the other half can be used for ordinary bolts.

Reamed hole bolts transmit torque through the extrusion of the bolt and the bolt hole wall. The horizontal scissors that the bolt receives are:
F=2TC÷D1Z  
Where: TC: Calculate torque, N.mm
D1Indicates the diameter of bolt distribution circle, mm
Z represents the number of bolts.
Shear strength of bolt: T=F÷Z≤
Extrusion strength of bolts:=p
Where:Indicates the contact thickness between the bolt and the hole wall in mm, whichever is the smaller of the two coupling halves;
Indicates the allowable shear stress of the bolt material, which is desirable when the load is stable= 0.4, When the load changes, it is advisable=(0.2-0.25), which is the yield limit of the bolt material;
pIndicates allowable extrusion stress, N/mm2, When the load is stable, it is preferable to steelp=(0.8-1), preferable for cast ironp=0.8b; When the load changes, it is preferable to steelp=(0.5-0.65)
; Desirable for cast ironp=0.5b,among thembIs the tensile strength limit of the material.
For ordinary bolt connection, the bolts must be tightened during assembly, and the torque is transmitted by the friction force between the end faces of the two halves of the coupling. The pre-tightening force of the bolts is:
                    F=2TC
Where: represents the friction coefficient between the end faces of the two halves of the coupling, generally acceptable= 0.1-0.2
Strength of bolts:   
Where: indicates the inner diameter of the bolt, mm;
Permissible tensile stress expressed, N/mm2.
model
Nominal torque Tn(Nm)
Allowable speed [n]r/min
Axle hole diameter d 1 d 2 dz
Length of shaft hole
D
S
Moment of inertia Kg.m 2
Weight Kg
 
Y type
Z, J 1 , Z type
 
L
The 1
L
 
iron
iron
steel
iron
 
HL1
160
7100
12 14
12 14
32
27
32
90
2.5
0.0064
2
 
16 18
16 18
42
30
42
 
19
19
 
20 22
20 22
52
38
52
 
24
 
 
HL2
315
5600
20 22
20 22
52
38
52
120
2.5
0.253
5
 
24
24
 
25 28
25 28
62
44
62
 
30 32
30 32
82
60
82
 
35
 
 
HL3
630
5000
30 32
30 32
82
60
82
160
2.5
0.6
8
 
35 38
35 38
 
40 42
40 42
112
84
112
 
45 48
 
 
HL4
1250
4000
2800
40 42
40 42
112
84
112
195
3
3.4
22
 
45 48
45 48
 
50 55
50 55
 
56
56
 
60 63
 
142
107
142
 
HL5
2000
3550
2500
50 55
50 55
112
84
112
220
3
5.4
30
 
56
56
 
60 63
60 63
142
107
142
 
65 67
65 67
 
71 75
 
 
HL6
3150
2800
2100
60 63
60 63
142
107
142
280
4
15.6
53
 
65 70
65 70
 
71 75
71 75
 
80
80
 
85
 
172
132
172
 
HL7
6300
2240
1700
70 71
70 71
142
107
142
320
4
41.1
98
 
75
75
 
80 85
80 85
172
132
172
 
90 95
90 95
 
100 110
100
212
167
212
 
HL8
10000
2120
1600
80 85
80 85
172
132
172
360
5
56.5
119
 
90 95
90 95
 
100 110
100 110
212
167
212
 
120 125
 
 
HL9
16000
1800
1250
100 110
100 110
212
167
212
410
5
133.3
197
 
120 125
120 125
 
130 140
130
252
202
252
 
HL10
25000
1560
1120
110 120
110 120
212
167
212
480
6
273.2
322
 
125
125
 
130 140
130 140
252
202
252
 
150
150
 
160 170
160
302
242
302
 
180
 
 
HL11
31500
1320
1000
130 140
130 140
252
202
252
540
6
555.7
520
 
150
150
 
160 170
160 170
302
242
302
 
180
180
 
190 200
190
352
282
352
 
220
 
 
HL12
63000
1250
950
160 170
160 170
302
242
302
630
7
902
714
 
180
180
 
190 200
190 200
352
282
352
 
220
220
 
240 250
 
410
330
-
 
260
 
 
HL13
100000
1120
850
190 200
190 200
352
282
352
710
8
1700
1057
 
220
220
 
240 250
240 250
410
330
-
 
260
260
 
280 300
 
470
380
-
 
HL14
160000
850
630
240 250
240 250
410
330
-
800
8
4318
1956
 
260
260
 
280 300
300
470
380
-
 
320
 
 
340
 
550
450
-
 
注:1、半联轴器材料D≤200锻钢,D≤280铸钢ZG270-500Ⅱ和铸铁HT200。
2. Coupling weight and moment of inertia are calculated based on the diameter of the small shaft hole and the length of the large shaft hole of the steel half-coupling.
3. Length of shaft hole L and L1It can be selected from the listed specifications according to different requirements.
4. J1It is a short cylindrical shaft hole without a counterbore.
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