Some standard content:
GB/T4323
3-2002
This standard is a revision of GB/T4323--1984 "Elastic Sleeve Pin Coupling". The main differences between this standard and GB/T1323·1984 are: each specification adds 1 recommended shaft hole length; the mass and moment of inertia of the coupling are calculated according to the material of cast steel, the largest shaft hole, and the L push grid; Appendix A\Coupling Selection Instructions" and Appendix B\Drum-shaped Elastic Sleeve" are cancelled; the technical requirements, inspection rules, marking, packaging, and storage are supplemented and improved; and the test methods and other contents are added. This standard replaces GB/T4323-1984 from the date of entry into force. This standard is proposed and managed by the National Technical Committee for Standardization of Machine Shafts and Accessories. The drafting units of this standard are: Mechanical Science Research Institute, Zhejiang Xianju Coupling Factory, Zhejiang Zhuji Chain General Factory. The main drafters of this standard are: Zhou Mingheng, Wang Xinhua, Ming Cuixin, Guo Wansong. 195
１ Scope
National Standard of the People's Republic of China
Pin coupling with elastic sleeve
Pin coupling with elastic sleeveGB/T 4323 --2002
Replaces GB/T43231984
This standard specifies the classification, type and parameters, technical requirements, test methods, inspection rules, marking, packaging and storage of IT type and L.TZ type elastic sleeve pin coupling (hereinafter referred to as coupling). This standard is applicable to the transmission shaft system connecting two coaxial lines, with certain compensation for the relative offset of the two shafts and general vibration reduction performance, the working temperature is 20C+70C; the nominal torque transmitted is 6.3N·m～16000N·m. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the texts shown were valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions listed below. GB/T931987 Standard spring washers
GB191--2000 Pictorial symbols for packaging, storage and transportation (eqvISO780:1997) GB/T 528--1998
Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber (egvIS) 37:1994) GB/T 531--1999
GB/T 700-1988
Rubber pocket hardness tester indentation hardness test method (idtISO7619:1986) Carbon structural steel
GB/T 1681--1991
GB/T1689
GB/T 1693-
Determination of rebound resilience of vulcanized rubber (cqvISO) 4662:1986) Determination of wear resistance of vulcanized rubber (Akron abrasion machine) Determination of power frequency dielectric constant and dielectric loss tangent of vulcanized rubber Mechanical properties of fasteners Nuts coarse thread (idt1S () 898-2:1992) GB/T 3098. 2 -
GB/T 3512— 2001
GB/T 3852 --1997
GB/T 4879--1999
GB/T 6388: -1986
GB/T 6557-
Hot air accelerated aging and heat resistance tests for vulcanized rubber or thermoplastic rubber (eqvIS0) 188:1998) Coupling shaft hole and connection type and size (neqIS0/R775:1969) Anti-rust packaging
Transport packaging delivery and receipt mark
Methods and criteria for mechanical balancing of flexible rotors (idtIS() 11342:1998) GB/T 11352--1989
--Casting carbon steel parts for general engineering (neqIs0) 3755:1975) GB/T 12458--1990
Classification of mechanical couplings
GB/T 13384-1992
3 Classification
3.1 TypeWww.bzxZ.net
General technical conditions for packaging of electromechanical products
Couplings are divided into two types, see Table 1.
3.2 Model and marking
The model and marking of coupling shall be in accordance with the provisions of GB/T12458, approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China on September 13, 2002, and implemented on April 1, 2003
3.2.1 Model indication method
Model example:
Basic type
Brake wheel type
GB/T 4323
Coupling type
5 ~~13
Specification code
Structural type code
Variety code
Group code
Example 1: The model of the basic elastic sleeve pin coupling with a nominal torque of 63N·m is: LT4. Figure
Example 2: The model of the elastic sleeve pin coupling with brake wheel with nominal torque of 1000N·m is: LTZ9. 3.2.2 Marking method
Actuating end shaft hole type code
King moving end keyway type code
Actuating end shaft hole diameter, mm
Actuating end shaft hole matching length, mm
Standard number
I. Driven end shaft hole matching length, mm
Driven end shaft hole diameter, mm
Driven end keyway type code
Driven end shaft hole type code
Coupling model, name (abbreviation: coupling) marking example:
Example 1: 1.T5 elastic sleeve pin coupling
GB/T4323 ---2002
Driving end: J, type shaft hole, A type keyway + d = -30mm. L = 50mm; driven end: J, type shaft hole B type keyway. d = 35mm. L = 50mmJ.30×50
LT5 coupling
GB/T 4323 -2002
Example 2: L.TZ10 brake wheel elastic sleeve pin coupling driving end: J type shaft hole, A type keyway. d = 85mml = 100mm; driven end: J, type shaft hole, A type keyway. d = 85mm, l. = 100mmLTZ10 coupling J, 85X100GB/T4323:20024 Structural type, basic parameters and main dimensions The shaft hole type shall be in accordance with the provisions of GB/T3852, and the shaft hole length is preferably T. 4.1 The structural type, basic parameters and main dimensions of LT type coupling shall comply with the provisions of Figure 1 and Table 2. Punctuation
2-type shaft hole
J-type shaft hole
Type shaft hole
Y-type shaft hole
1, 7 half coupling; 2-nut; 3 washer; 4 gear diagram: 5 elastic sleeve: 6 column pin: L. 1 thick diagram 1I.T type coupling
GB/T4323—2002
Table 2 Basic parameters and main dimensions of LT type coupling Shaft hole diameter
880010.11
12, 14
16, 18, 19
20, 22
20, 22, 24
25, 28
25, 28
30, 32, 35
32.35, 38
40, 42
360040, 42, 45, 48
45, 48, 50, 55, 56
60, 63
LT10/ 2 000
LT114000
LT128000
LT1316 000
50.55、56
60、63、65、70、71
63、65、70、71、75
80、85.90.95
80.85、90、95
100、110、120、125
120、125
130.140.150
Shaft hole length
J、JI、Z type
Note: Mass and moment of inertia are calculated based on the material of cast steel, no hole, L push grid approximate value 1
0. 8210. 000 3
2. 200. 002 3
2. 810. 003 7
6.050.012 0
30.69↓0.213 0
61.400-660 0
120. 702. 122 0
419. 3617. 580 0
GB/T4323—2002
4.21. The structural type, basic parameters and main dimensions of the T7. type coupling with brake wheel shall comply with the provisions of Figure 2 and Table 3. Mark
Type B shaft hole
Type Y shaft hole
Type Y shaft hole Standard
1-Brake wheel: 2-Nut: 3-Washer: 4-Retaining ring; 5-Elastic sleeve: 6-Pin: 7-Half coupling: 1,-L. Gui recommended Figure 2 LTZ type coupling
Table 3 Basic parameters and main dimensions of LTZ type coupling Nominal
[I.TZ13|16 000
Shaft hole diameter
25, 28
30, 32, 35
32, 35, 38
40, 12, 45, 48
45, 48, 50, 55, 56
50, 55, 56
60.63.65.70
63, 65, 70, 71, 75
8 0, 85, 90, 95
80.85.90, 95
100.110, 120, 125
120, 125
130.140,150
160, 170
Shaft hole length
J, JI, Z type
Note: Mass and moment of inertia are approximate values calculated based on the material of cast steel, hole and thrust. 200
L push joint
20013085
250160105
400315
400210100198.73
630475265
710600298180611.1330.4800
GB/T4323--2002
4.3 The structural type and main dimensions of the elastic sleeve and retaining ring pin shall conform to the requirements of Figures 3 to 5 and Table 4. Area network
Figure 3 Elastic sleeve
Figure 4 Retaining ring
Figure 5 Pin
Table 4 Main dimensions of elastic sleeve, retaining ring and pin Type
1:1213
Elastic sleeve
5 Technical requirements
GB/T4323~2002
5.1 The coupling shall comply with the requirements of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 5.2 The maximum allowable axis error of the two connected shafts shall not be greater than the provisions of Table 5. The maximum operating compensation refers to the relative offset of the two shafts caused by the combined factors of manufacturing error, installation error, vibration, impact, deformation, temperature change, etc. caused by the change of working load under the working state.
Table 5 Maximum allowable axis error of LT type and LTZ type Maximum allowable installation error
The material performance of coupling parts shall not be lower than the provisions of Table 6. 5.3
Table 6 Materials of coupling parts
Part name
Half coupling
Brake wheel
Elastic sleeve
ZG270-500
ZG270-500
Thermoplastic rubber (TPE)
Performance grade 8
Maximum allowable running compensation
GB/T11352
GB/T700
GJ3/T11352
GB/T 700
GB/T 93
GB/T700
See table?
GB/T 700
GB/T 3098. 2
The surface of the half-coupling and brake wheel shall not have cracks, shrinkage holes, bubbles, slag inclusions and other defects that affect the strength. The surface of the brake wheel shall be 5.4
quenched.
5.5 The appearance of the elastic sleeve shall be smooth and flat, and there shall be no pitting on the working surface. There shall be no impurities, bubbles, cracks and other defects inside. 202
GB/T43232002
5.6 The tolerance of the half-coupling hole shall comply with the provisions of GB/T3852, and the surface roughness Ra of the shaft hole shall not exceed 1.6μm. 5.7 The physical properties of the elastic sleeve shall not be lower than those specified in Table 7. Table 7 Physical properties of elastic sleeve
Performance index
Elongation at break
Tear strength at break
Abrasion
Aging 100℃ × 70 h
Hardness change
Oil resistance 100℃ × 70h
Volume change rate of 30# oil
Rebound resilience
cm/1.63 km
GB/T531
GB/T 528
GB/T528
GB/T1689
GB/T3512
GB/T1693
GB/T1681
5.8 The coupling must be tested before leaving the factory. The half coupling and the elastic sleeve and pin assembly must be tested relative to each other in at least two positions, and they should be easy to install and disassemble.
5.9 When the coupling is subjected to a mechanical balance test, the balance accuracy shall not be lower than G16. 5.10 The coupling shall be cleaned before assembly, and the mating surface shall be coated with a rust inhibitor, and the non-mating surface shall be painted or subjected to other rust-proof treatments. 6 Test method
Static torsion test
Fix the driving and driven ends of the coupling on the static torsion test bench respectively, and load them with 20% of the nominal torque each time until the nominal torque is 1.5 times. After unloading, the coupling is in a free state, and the appearance quality of the elastic sleeve and the half coupling is visually inspected. No cracks are allowed.
6.2 Mechanical balance test
The mechanical balance test shall be carried out in accordance with the provisions of GB/T6557. 7 Inspection rules
7.1 Factory inspection
7.1.1 Each set of coupling shall be inspected according to the requirements of 5.4, 5.5, 5.6, 5.8, 5.10 and the drawings before leaving the factory. 7.1.2 Each set of coupling shall be inspected and qualified by the product quality inspection department of the manufacturer, and shall be shipped with a product quality certificate. 7.2 Type inspection
Type test shall be carried out for the first product of a series or when there are major changes in product structure, materials, and processes, or when the contract stipulates. 7.2.1 Inspection items
In addition to the factory inspection items, inspections shall also be carried out in accordance with the provisions of 5.1 and 5.2. 7.2.2 Sampling and batching rules
When the first batch of couplings is less than 10 units, 1 unit shall be sampled; when the first batch is 10 to 50 units, 2 units shall be sampled; when the first batch is more than 50 units, 3 units shall be sampled. If the first batch fails, double the number of units shall be sampled; if the first batch fails, the whole number shall be sampled. 8 Marking, packaging, purchase and storage
8.1 Marking
8.1.1 The coupling shall be printed with the model mark in a prominent position. 203
GB/T4323—2002
8.1.2 Elastic parts shall be marked with the model mark and manufacturer code on the non-working surface. 8.1.3 The certificate of each coupling shall include: a) coupling name, model, standard number; b) manufacturer name; c) date of manufacture; d) inspection mark. 8.2 Packaging 8.2.1 After cleaning, the coupling shall be packed for rust prevention according to the provisions of GB/T4879. 8.2.2 Packaging shall be in accordance with the provisions of GB/T13384. 8.2.3 The marking on the outer packaging box of the coupling shall comply with the provisions of GB191 and GB/T6388. 8.3 Storage 8.3.1 The coupling shall be stored in a clean, dry and ventilated environment, avoiding sunlight and rain. Avoid contact with acids, organic solvents and other substances during storage.
8.3.2 While complying with 8.3.1, the manufacturer shall ensure that the performance of the product still complies with the requirements of this standard within a storage period of one year from the date of leaving the factory.110, 120, 125
120, 125
130.140,150
160, 170
Shaft hole length
J, JI, Z type
Note: Mass and moment of inertia are approximate values calculated based on the material of cast steel, hole and thrust. 200
L push joint
20013085
250160105
400315
400210100198.73
630475265
710600298180611.1330.4800
GB/T4323--2002
4.3 The structural type and main dimensions of the elastic sleeve and retaining ring pin shall conform to the requirements of Figures 3 to 5 and Table 4. Area network
Figure 3 Elastic sleeve
Figure 4 Retaining ring
Figure 5 Pin
Table 4 Main dimensions of elastic sleeve, retaining ring and pin Type
1:1213
Elastic sleeve
5 Technical requirements
GB/T4323~2002
5.1 The coupling shall comply with the requirements of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 5.2 The maximum allowable axis error of the two connected shafts shall not be greater than the provisions of Table 5. The maximum operating compensation refers to the relative offset of the two shafts caused by the combined factors of manufacturing error, installation error, vibration, impact, deformation, temperature change, etc. caused by the change of working load under the working state.
Table 5 Maximum allowable axis error of LT type and LTZ type Maximum allowable installation error
The material performance of coupling parts shall not be lower than the provisions of Table 6. 5.3
Table 6 Materials of coupling parts
Part name
Half coupling
Brake wheel
Elastic sleeve
ZG270-500
ZG270-500
Thermoplastic rubber (TPE)
Performance grade 8
Maximum allowable running compensation
GB/T11352
GB/T700
GJ3/T11352
GB/T 700
GB/T 93
GB/T700
See table?
GB/T 700
GB/T 3098. 2
The surface of the half-coupling and brake wheel shall not have cracks, shrinkage holes, bubbles, slag inclusions and other defects that affect the strength. The surface of the brake wheel shall be 5.4
quenched.
5.5 The appearance of the elastic sleeve shall be smooth and flat, and there shall be no pitting on the working surface. There shall be no impurities, bubbles, cracks and other defects inside. 202
GB/T43232002
5.6 The tolerance of the half-coupling hole shall comply with the provisions of GB/T3852, and the surface roughness Ra of the shaft hole shall not exceed 1.6μm. 5.7 The physical properties of the elastic sleeve shall not be lower than those specified in Table 7. Table 7 Physical properties of elastic sleeve
Performance index
Elongation at break
Tear strength at break
Abrasion
Aging 100℃ × 70 h
Hardness change
Oil resistance 100℃ × 70h
Volume change rate of 30# oil
Rebound resilience
cm/1.63 km
GB/T531
GB/T 528
GB/T528
GB/T1689
GB/T3512
GB/T1693
GB/T1681
5.8 The coupling must be tested before leaving the factory. The half coupling and the elastic sleeve and pin assembly must be tested relative to each other in at least two positions, and they should be easy to install and disassemble.
5.9 When the coupling is subjected to a mechanical balance test, the balance accuracy shall not be lower than G16. 5.10 The coupling shall be cleaned before assembly, and the mating surface shall be coated with a rust inhibitor, and the non-mating surface shall be painted or subjected to other rust-proof treatments. 6 Test method
Static torsion test
Fix the driving and driven ends of the coupling on the static torsion test bench respectively, and load them with 20% of the nominal torque each time until the nominal torque is 1.5 times. After unloading, the coupling is in a free state, and the appearance quality of the elastic sleeve and the half coupling is visually inspected. No cracks are allowed.
6.2 Mechanical balance test
The mechanical balance test shall be carried out in accordance with the provisions of GB/T6557. 7 Inspection rules
7.1 Factory inspection
7.1.1 Each set of coupling shall be inspected according to the requirements of 5.4, 5.5, 5.6, 5.8, 5.10 and the drawings before leaving the factory. 7.1.2 Each set of coupling shall be inspected and qualified by the product quality inspection department of the manufacturer, and shall be shipped with a product quality certificate. 7.2 Type inspection
Type test shall be carried out for the first product of a series or when there are major changes in product structure, materials, and processes, or when the contract stipulates. 7.2.1 Inspection items
In addition to the factory inspection items, inspections shall also be carried out in accordance with the provisions of 5.1 and 5.2. 7.2.2 Sampling and batching rules
When the first batch of couplings is less than 10 units, 1 unit shall be sampled; when the first batch is 10 to 50 units, 2 units shall be sampled; when the first batch is more than 50 units, 3 units shall be sampled. If the first batch fails, double the number of units shall be sampled; if the first batch fails, the whole number shall be sampled. 8 Marking, packaging, purchase and storage
8.1 Marking
8.1.1 The coupling shall be printed with the model mark in a prominent position. 203
GB/T4323—2002
8.1.2 Elastic parts shall be marked with the model mark and manufacturer code on the non-working surface. 8.1.3 The certificate of each coupling shall include: a) coupling name, model, standard number; b) manufacturer name; c) date of manufacture; d) inspection mark. 8.2 Packaging 8.2.1 After cleaning, the coupling shall be packed for rust prevention according to the provisions of GB/T4879. 8.2.2 Packaging shall be in accordance with the provisions of GB/T13384. 8.2.3 The marking on the outer packaging box of the coupling shall comply with the provisions of GB191 and GB/T6388. 8.3 Storage 8.3.1 The coupling shall be stored in a clean, dry and ventilated environment, avoiding sunlight and rain. Avoid contact with acids, organic solvents and other substances during storage.
8.3.2 While complying with 8.3.1, the manufacturer shall ensure that the performance of the product still complies with the requirements of this standard during the one-year storage period from the date of leaving the factory.110, 120, 125
120, 125
130.140,150
160, 170
Shaft hole length
J, JI, Z type
Note: Mass and moment of inertia are approximate values calculated based on the material of cast steel, hole and thrust. 200
L push joint
20013085
250160105
400315
400210100198.73
630475265
710600298180611.1330.4800
GB/T4323--2002
4.3 The structural type and main dimensions of the elastic sleeve and retaining ring pin shall conform to the requirements of Figures 3 to 5 and Table 4. Area network
Figure 3 Elastic sleeve
Figure 4 Retaining ring
Figure 5 Pin
Table 4 Main dimensions of elastic sleeve, retaining ring and pin Type
1:1213
Elastic sleeve
5 Technical requirements
GB/T4323~2002
5.1 The coupling shall comply with the requirements of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 5.2 The maximum allowable axis error of the two connected shafts shall not be greater than the provisions of Table 5. The maximum operating compensation refers to the relative offset of the two shafts caused by the combined factors of manufacturing error, installation error, vibration, impact, deformation, temperature change, etc. caused by the change of working load under the working state.
Table 5 Maximum allowable axis error of LT type and LTZ type Maximum allowable installation error
The material performance of coupling parts shall not be lower than the provisions of Table 6. 5.3
Table 6 Materials of coupling parts
Part name
Half coupling
Brake wheel
Elastic sleeve
ZG270-500
ZG270-500
Thermoplastic rubber (TPE)
Performance grade 8
Maximum allowable running compensation
GB/T11352
GB/T700
GJ3/T11352
GB/T 700
GB/T 93
GB/T700
See table?
GB/T 700
GB/T 3098. 2
The surface of the half-coupling and brake wheel shall not have cracks, shrinkage holes, bubbles, slag inclusions and other defects that affect the strength. The surface of the brake wheel shall be 5.4
quenched.
5.5 The appearance of the elastic sleeve shall be smooth and flat, and there shall be no pitting on the working surface. There shall be no impurities, bubbles, cracks and other defects inside. 202
GB/T43232002
5.6 The tolerance of the half-coupling hole shall comply with the provisions of GB/T3852, and the surface roughness Ra of the shaft hole shall not exceed 1.6μm. 5.7 The physical properties of the elastic sleeve shall not be lower than those specified in Table 7. Table 7 Physical properties of elastic sleeve
Performance index
Elongation at break
Tear strength at break
Abrasion
Aging 100℃ × 70 h
Hardness change
Oil resistance 100℃ × 70h
Volume change rate of 30# oil
Rebound resilience
cm/1.63 km
GB/T531
GB/T 528
GB/T528
GB/T1689
GB/T3512
GB/T1693
GB/T1681
5.8 The coupling must be tested before leaving the factory. The half coupling and the elastic sleeve and pin assembly must be tested relative to each other in at least two positions, and they should be easy to install and disassemble.
5.9 When the coupling is subjected to a mechanical balance test, the balance accuracy shall not be lower than G16. 5.10 The coupling shall be cleaned before assembly, and the mating surface shall be coated with a rust inhibitor, and the non-mating surface shall be painted or subjected to other rust-proof treatments. 6 Test method
Static torsion test
Fix the driving and driven ends of the coupling on the static torsion test bench respectively, and load them with 20% of the nominal torque each time until the nominal torque is 1.5 times. After unloading, the coupling is in a free state, and the appearance quality of the elastic sleeve and the half coupling is visually inspected. No cracks are allowed.
6.2 Mechanical balance test
The mechanical balance test shall be carried out in accordance with the provisions of GB/T6557. 7 Inspection rules
7.1 Factory inspection
7.1.1 Each set of coupling shall be inspected according to the requirements of 5.4, 5.5, 5.6, 5.8, 5.10 and the drawings before leaving the factory. 7.1.2 Each set of coupling shall be inspected and qualified by the product quality inspection department of the manufacturer, and shall be shipped with a product quality certificate. 7.2 Type inspection
Type test shall be carried out for the first product of a series or when there are major changes in product structure, materials, and processes, or when the contract stipulates. 7.2.1 Inspection items
In addition to the factory inspection items, inspections shall also be carried out in accordance with the provisions of 5.1 and 5.2. 7.2.2 Sampling and batching rules
When the first batch of couplings is less than 10 units, 1 unit shall be sampled; when the first batch is 10 to 50 units, 2 units shall be sampled; when the first batch is more than 50 units, 3 units shall be sampled. If the first batch fails, double the number of units shall be sampled; if the first batch fails, the whole number shall be sampled. 8 Marking, packaging, purchase and storage
8.1 Marking
8.1.1 The coupling shall be printed with the model mark in a prominent position. 203
GB/T4323—2002
8.1.2 Elastic parts shall be marked with the model mark and manufacturer code on the non-working surface. 8.1.3 The certificate of each coupling shall include: a) coupling name, model, standard number; b) manufacturer name; c) date of manufacture; d) inspection mark. 8.2 Packaging 8.2.1 After cleaning, the coupling shall be packed for rust prevention according to the provisions of GB/T4879. 8.2.2 Packaging shall be in accordance with the provisions of GB/T13384. 8.2.3 The marking on the outer packaging box of the coupling shall comply with the provisions of GB191 and GB/T6388. 8.3 Storage 8.3.1 The coupling shall be stored in a clean, dry and ventilated environment, avoiding sunlight and rain. Avoid contact with acids, organic solvents and other substances during storage.
8.3.2 While complying with 8.3.1, the manufacturer shall ensure that the performance of the product still complies with the requirements of this standard during the one-year storage period from the date of leaving the factory.3
Table 6 Materials of coupling parts
Part name
Half coupling
Brake wheel
Elastic sleeve
ZG270-500
ZG270-500
Thermoplastic rubber (TPE)
Performance grade 8
Maximum allowable running compensation
GB/T11352
GB/T700
GJ3/T11352
GB/T 700
GB/T 93
GB/T700
See table?
GB/T 700
GB/T 3098. 2
The surface of the half-coupling and brake wheel shall not have cracks, shrinkage holes, bubbles, slag inclusions and other defects that affect the strength. The surface of the brake wheel shall be 5.4
quenched.
5.5 The appearance of the elastic sleeve shall be smooth and flat, and there shall be no pitting on the working surface. There shall be no impurities, bubbles, cracks and other defects inside. 202
GB/T43232002
5.6 The tolerance of the half-coupling hole shall comply with the provisions of GB/T3852, and the surface roughness Ra of the shaft hole shall not exceed 1.6μm. 5.7 The physical properties of the elastic sleeve shall not be lower than those specified in Table 7. Table 7 Physical properties of elastic sleeve
Performance index
Elongation at break
Tear strength at break
Abrasion
Aging 100℃ × 70 h
Hardness change
Oil resistance 100℃ × 70h
Volume change rate of 30# oil
Rebound resilience
cm/1.63 km
GB/T531
GB/T 528
GB/T528
GB/T1689
GB/T3512
GB/T1693
GB/T1681
5.8 The coupling must be tested before leaving the factory. The half coupling and the elastic sleeve and pin assembly must be tested relative to each other in at least two positions, and they should be easy to install and disassemble.
5.9 When the coupling is subjected to a mechanical balance test, the balance accuracy shall not be lower than G16. 5.10 The coupling shall be cleaned before assembly, and the mating surface shall be coated with a rust inhibitor, and the non-mating surface shall be painted or subjected to other rust-proof treatments. 6 Test method
Static torsion test
Fix the driving and driven ends of the coupling on the static torsion test bench respectively, and load them with 20% of the nominal torque each time until the nominal torque is 1.5 times. After unloading, the coupling is in a free state, and the appearance quality of the elastic sleeve and the half coupling is visually inspected. No cracks are allowed.
6.2 Mechanical balance test
The mechanical balance test shall be carried out in accordance with the provisions of GB/T6557. 7 Inspection rules
7.1 Factory inspection
7.1.1 Each set of coupling shall be inspected according to the requirements of 5.4, 5.5, 5.6, 5.8, 5.10 and the drawings before leaving the factory. 7.1.2 Each set of coupling shall be inspected and qualified by the product quality inspection department of the manufacturer, and shall be shipped with a product quality certificate. 7.2 Type inspection
Type test shall be carried out for the first product of a series or when there are major changes in product structure, materials, and processes, or when the contract stipulates. 7.2.1 Inspection items
In addition to the factory inspection items, inspections shall also be carried out in accordance with the provisions of 5.1 and 5.2. 7.2.2 Sampling and batching rules
When the first batch of couplings is less than 10 units, 1 unit shall be sampled; when the first batch is 10 to 50 units, 2 units shall be sampled; when the first batch is more than 50 units, 3 units shall be sampled. If the first batch fails, double the number of units shall be sampled; if the first batch fails, the whole number shall be sampled. 8 Marking, packaging, purchase and storage
8.1 Marking
8.1.1 The coupling shall be printed with the model mark in a prominent position. 203
GB/T4323—2002
8.1.2 Elastic parts shall be marked with the model mark and manufacturer code on the non-working surface. 8.1.3 The certificate of each coupling shall include: a) coupling name, model, standard number; b) manufacturer name; c) date of manufacture; d) inspection mark. 8.2 Packaging 8.2.1 After cleaning, the coupling shall be packed for rust prevention according to the provisions of GB/T4879. 8.2.2 Packaging shall be in accordance with the provisions of GB/T13384. 8.2.3 The marking on the outer packaging box of the coupling shall comply with the provisions of GB191 and GB/T6388. 8.3 Storage 8.3.1 The coupling shall be stored in a clean, dry and ventilated environment, avoiding sunlight and rain. Avoid contact with acids, organic solvents and other substances during storage.
8.3.2 While complying with 8.3.1, the manufacturer shall ensure that the performance of the product still complies with the requirements of this standard within a storage period of one year from the date of leaving the factory.3
Table 6 Materials of coupling parts
Part name
Half coupling
Brake wheel
Elastic sleeve
ZG270-500
ZG270-500
Thermoplastic rubber (TPE)
Performance grade 8
Maximum allowable running compensation
GB/T11352
GB/T700
GJ3/T11352
GB/T 700
GB/T 93
GB/T700
See table?
GB/T 700
GB/T 3098. 2
The surface of the half-coupling and brake wheel shall not have cracks, shrinkage holes, bubbles, slag inclusions and other defects that affect the strength. The surface of the brake wheel shall be 5.4
quenched.
5.5 The appearance of the elastic sleeve shall be smooth and flat, and there shall be no pitting on the working surface. There shall be no impurities, bubbles, cracks and other defects inside. 202
GB/T43232002
5.6 The tolerance of the half-coupling hole shall comply with the provisions of GB/T3852, and the surface roughness Ra of the shaft hole shall not exceed 1.6μm. 5.7 The physical properties of the elastic sleeve shall not be lower than those specified in Table 7. Table 7 Physical properties of elastic sleeve
Performance index
Elongation at break
Tear strength at break
Abrasion
Aging 100℃ × 70 h
Hardness change
Oil resistance 100℃ × 70h
Volume change rate of 30# oil
Rebound resilience
cm/1.63 km
GB/T531
GB/T 528
GB/T528
GB/T1689
GB/T3512
GB/T1693
GB/T1681
5.8 The coupling must be tested before leaving the factory. The half coupling and the elastic sleeve and pin assembly must be tested relative to each other in at least two positions, and they should be easy to install and disassemble.
5.9 When the coupling is subjected to a mechanical balance test, the balance accuracy shall not be lower than G16. 5.10 The coupling shall be cleaned before assembly, and the mating surface shall be coated with a rust inhibitor, and the non-mating surface shall be painted or subjected to other rust-proof treatments. 6 Test method
Static torsion test
Fix the driving and driven ends of the coupling on the static torsion test bench respectively, and load them with 20% of the nominal torque each time until the nominal torque is 1.5 times. After unloading, the coupling is in a free state, and the appearance quality of the elastic sleeve and the half coupling is visually inspected. No cracks are allowed.
6.2 Mechanical balance test
The mechanical balance test shall be carried out in accordance with the provisions of GB/T6557. 7 Inspection rules
7.1 Factory inspection
7.1.1 Each set of coupling shall be inspected according to the requirements of 5.4, 5.5, 5.6, 5.8, 5.10 and the drawings before leaving the factory. 7.1.2 Each set of coupling shall be inspected and qualified by the product quality inspection department of the manufacturer, and shall be shipped with a product quality certificate. 7.2 Type inspection
Type test shall be carried out for the first product of a series or when there are major changes in product structure, materials, and processes, or when the contract stipulates. 7.2.1 Inspection items
In addition to the factory inspection items, inspections shall also be carried out in accordance with the provisions of 5.1 and 5.2. 7.2.2 Sampling and batching rules
When the first batch of couplings is less than 10 units, 1 unit shall be sampled; when the first batch is 10 to 50 units, 2 units shall be sampled; when the first batch is more than 50 units, 3 units shall be sampled. If the first batch fails, double the number of units shall be sampled; if the first batch fails, the whole number shall be sampled. 8 Marking, packaging, purchase and storage
8.1 Marking
8.1.1 The coupling shall be printed with the model mark in a prominent position. 203
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8.1.2 Elastic parts shall be marked with the model mark and manufacturer code on the non-working surface. 8.1.3 The certificate of each coupling shall include: a) coupling name, model, standard number; b) manufacturer name; c) date of manufacture; d) inspection mark. 8.2 Packaging 8.2.1 After cleaning, the coupling shall be packed for rust prevention according to the provisions of GB/T4879. 8.2.2 Packaging shall be in accordance with the provisions of GB/T13384. 8.2.3 The marking on the outer packaging box of the coupling shall comply with the provisions of GB191 and GB/T6388. 8.3 Storage 8.3.1 The coupling shall be stored in a clean, dry and ventilated environment, avoiding sunlight and rain. Avoid contact with acids, organic solvents and other substances during storage.
8.3.2 While complying with 8.3.1, the manufacturer shall ensure that the performance of the product still complies with the requirements of this standard within a storage period of one year from the date of leaving the factory.2
, the packaging shall comply with the provisions of GB/T13384.
8.2.3 The markings on the outer packaging box of the coupling shall comply with the provisions of GB191 and GB/T6388. 8.3 Storage
8.3.1 The coupling shall be stored in a clean, dry and ventilated environment, away from sunlight and rain. Avoid contact with acids, organic solvents and other substances during the storage period.
8.3.2 In compliance with 8.3.1, the manufacturer shall ensure that the performance of the product shall still comply with the provisions of this standard within a storage period of one year from the date of leaving the factory.2
, the packaging shall comply with the provisions of GB/T13384.
8.2.3 The markings on the outer packaging box of the coupling shall comply with the provisions of GB191 and GB/T6388. 8.3 Storage
8.3.1 The coupling shall be stored in a clean, dry and ventilated environment, away from sunlight and rain. Avoid contact with acids, organic solvents and other substances during the storage period.
8.3.2 In compliance with 8.3.1, the manufacturer shall ensure that the performance of the product shall still comply with the provisions of this standard within a storage period of one year from the date of leaving the factory.
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