Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T5514-1991
TGL Drum Gear Coupling
Published on 1991-07-10
Implementation by the Ministry of Machinery and Electronics Industry of the People's Republic of China on 1992-07-01
Mechanical Industry Standard of the People's Republic of China
TGL Drum Gear Coupling
Subject Content and Scope of Application
JB/T5514-1991
This standard specifies the type, basic parameters, main dimensions and technical conditions of TGL drum gear coupling (hereinafter referred to as coupling). This standard is applicable to the transmission shaft system connecting two coaxial lines and has a certain performance of compensating the relative displacement of the two shafts. The working environment temperature is -20~80℃, and the nominal torque transmitted is 10~2500N·m. 2
Reference standards
GB3507
GB3852
GB3931
GB10095
GB1039
JB/ZQ4000.1
JB/ZQ4000.2
JB/ZQ4286
Nominal torque series of mechanical coupling
Coupling shaft hole and keyway
Type and size||tt ||Terminology of mechanical couplings
Precision of involute cylindrical gears
General principles of test methods for mechanical properties of plastics
General technical requirements for product inspection
General technical requirements for cut parts
General technical conditions for packaging
Type, basic parameters and main dimensions
3.1 Type
Basic type (see Figure 1);
Inner retaining ring type (see Figure 2):
Outer retaining ring type (see Figure 3).
3.2 Basic parameters and main dimensions shall comply with the provisions of Figures 1, 2, 3 and Table 1. 3.3 The types and dimensions of the shaft hole and keyway of the coupling shall comply with the provisions of GB3852. 3.4 Model and Marking
Model Description
1991-07-10 Approval by the Ministry of Machinery and Electronics Industry Area
Specification Sequence Number
-Type B
Coupling "Lian" Chinese Pinyin First Letter Drum-Shaped Tooth "Drum" Chinese Pinyin First Letter Integral "Ti" Chinese Pinyin First Letter Implementation
Figure 1A Type
JB/T 55141991 | 18191
61*8 19T | 514-1991
56 -06 *58 -08
95*S505
OTT-OOT
56 *06 *58*08
9sss0s
\99“9
JB/T5514-1991
The marking of the coupling shall comply with the provisions of GB3852. Marking example:
Example 1: TGLA4 drum gear coupling
Driving end: J, type shaft hole, A type keyway, d,=20mm, L=38mm|| tt||Driven end: J-type shaft hole, A-type keyway, d,=28mm, L=44mm
,20×38
TGLA4 coupling
J,28×44
Example 2: TGLB6 drum gear coupling
JB/T5514
Driving end: J-type shaft hole, A-type keyway, d,=22mm,| |tt||L=38mm
Driven end: J, type shaft hole, A type keyway, d,=32mm, TGLB6 coupling↓22×38
J,32×60
Example 3: TGLC8 drum gear coupling
JB/T5514
L=60mm
L=84mm
Driving end: J , type shaft hole, A type keyway, d,=40mm, driven end: J, type shaft hole, A type keyway, d=40mm, TGLC8 coupling J,40X84
Technical requirements
JB/T5514
L=84mm
The coupling shall comply with the requirements of this standard, and shall be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. The material of the external gear sleeve shall be 45# steel, and other materials with mechanical properties not lower than those in Table 2 may also be used. Table 2
Tensile strength.
Service limit. www.bzxz.net
Elongation
The physical and mechanical properties of the internal gear ring shall be MC nylon, and the mechanical properties shall not be lower than those specified in Table 3.
Physical and mechanical properties
Density kg/m2
Tensile strength N/mm2
Compressive strength N/mm2
Flexural strength N/mm2
Impact tolerance (notch)
Average linear expansion coefficient
1/℃
Martin heat resistance ℃
Hardness (Brinell)
Water absorption %
8×10-5
14~21HB
Test method||tt ||Quenched and tempered hardness
≥269
GB1033 Test method for density and relative density of molding materials GB1040 Test method for tensile strength of plastics
GB1041 Test method for compression of plastics
GB1042 Test method for bending of plastics
GB1043 Test method for impact of simply supported beam of plastics GB1036 Test method for average linear expansion coefficient of plastics GB1035 Test method for heat resistance (Martin) of plastics GB1034 Test method for water absorption of plastics
JB/T 55141991
4.4 The inner gear ring shall not have shrinkage cavities, bubbles, slag inclusions and other defects that affect the strength. H9
4.5 The connection of the coupling is centered with the root cylindrical surface of the internal gear diagram and the spherical surface of the external gear sleeve tooth top, and the matching tolerance is h7
4.6 The accuracy level of the internal and external gears shall be in accordance with the 8th grade in GB10095, and the surface roughness R of the meshing surface is 3.2μm. 4.7 The shape and position tolerance of the external gear sleeve and the symmetry deviation of the center section of the tooth width shall be in accordance with the requirements of Figure 4. n
4.8 The machining accuracy of the shaft hole of the external gear sleeve is H7, the surface roughness R. is 3.2μm, and the cylindricality shall not be lower than the 8th grade accuracy in GB1184.
4.9 The machined parts shall meet the requirements of JB/ZQ4000.2. 4.10
The allowable axial, radial or angular compensation of the coupling shall not be greater than the provisions in Table 4. Table 4
Coupling
≥X (mm)
(each half coupling)
The service life of the inner gear ring shall not be less than 2 years.
Test methods and inspection rules
5.1 Factory inspection
5.1.1 The coupling must be tested before leaving the factory, and the various connecting parts should be well assembled and easy to disassemble. TGL
2 The two half couplings and the inner gear ring should move and rotate flexibly, and there should be no jamming within the compensation performance range. 5.1.2
5.2 Type test
JB/T5514-1991
The coupling manufacturer must conduct at least one specification of type test for each type. The test items are as follows: the transmission efficiency should not be less than 96%;
Under the action of twice the instantaneous overload torque, there is no damage to the coupling parts; b.
Check whether the nominal torque meets the specified value at the allowable speed. 5.3 The inspection department of the coupling manufacturer shall conduct inspection and acceptance in accordance with the requirements of JB/ZQ4000.1, the provisions of this standard and the production drawings, and shall be accompanied by a product certificate.
5.4 According to user requirements, the coupling manufacturer shall provide the inspection results of the internal gear ring in accordance with the provisions of this standard. 5 Users can re-inspect product quality according to relevant technical requirements. The number of random inspections shall not exceed 2% of the number of deliveries in each batch, but shall not be less than 5 sets. The number of random inspections shall not exceed 5.5
The results should all be qualified. If there are unqualified products in the random inspection, double the number of products will be re-examined. If there are still unqualified products, it can be determined that all the products in this batch are unqualified.
Marking, packaging, storage
The finished products of the inner gear ring and outer gear sleeve of the coupling should be printed with the product model logo at the specified position. The coupling should be packaged in accordance with the provisions of JB/ZQ4286, and the packaging logo includes the following: a
Manufacturer name:
Product name and model:
Standard number:
Weight;
Trademark and manufacturing date;
Product certificate.
The product should be rust-proof packaged, and the shelf life is 1 year. 6.3
The coupling should be stored in a dry environment, away from sunlight and rain. Avoid contact with water, acid, alkali and organic solvents, and the inner gear ring should be 6.4
stored in a free state.
JB/T 5514-1991
Appendix A
Instructions for the selection of couplings
(reference)
The coupling is selected according to the load conditions,
calculated torque, shaft end diameter, and working speed. The calculated torque is obtained by the following formula:
T=KT=K×9500×
Where: T theoretical torque, N·m;
T calculated torque, N·m;
nominal torque, N·m;
Pw—driving power, kW
n working speed, r/min;
K——working condition coefficient
Take K=1: the working machine has a slight impact, 1
(the prime mover is an electric motor,
Take K=1.1).
For the relationship between driving power and operating speed, please refer to Table A1. Coupling nominal torque,
JB/T 5514-1991
Continued Table A1
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