Some standard content:
Industry Standard of the People's Republic of China
Bicycle Industry Standard
1993--04-15 Issued
1993-07-29
Ministry of Light Industry of the People's Republic of China
1993—12—01
199403-01
QB 1714-93
Method for compiling bicycle naming and models
QB/T 1715—93
QB/T 1716—93
QB/T 1717--93
QB/T 1718-93
QB/T1719—93
QB/T 1720-93
QB/T 1721--93
QB/T1722--93
QB/T 1723-93
QB1724—93
QB 1802-93
White-travel vehicle
Bicycle
Bicycle
Bicycle
Bicycle
Bicycle
Bicycle
White-travel vehicle
White-travel vehicle
Bicycle
Ordinary front and rear brakes
Staggered expansion brake·
Fender·
Safety fork·
Rim·
·(30 )
.-（40)
( 48 )
-(61)
Subject content and scope of application
Industry Standard of the People's Republic of China
Bicycle
QB/T171793
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of bicycle saddles (hereinafter referred to as "saddles"). This standard applies to saddles for general bicycles as specified in 0B1714 "Bicycle Naming and Model Compilation Method". 2 Referenced standards
GB2828 Remote batch inspection counting sampling procedure and sampling table (applicable to inspection of ten consecutive batches) GB2829
GB12742
Periodic inspection counting sampling procedure and sampling table (applicable to inspection of production process stability) Technical conditions for bicycle testing equipment and instruments QB/T1217
QB/T 1218
3 Product classification
Technical conditions for electroplating of white bicycles
Technical conditions for painting of bicycles
3.1 Basic types and names of parts
3.1.1 Two (double) vertical spring saddles, examples are shown in Figures 1 and 2.4
1-Front plate:
8-Saddle selection;
14-Pressure plate,
2-Pull Spring;
S-trademark:
3-pull plate;
10-left vertical spring;
15-fire bolt:
4-surface:
5-technical pad:
11-right vertical spring;
16-clamping plate;
17-upper beam;
Ministry of Light Industry of the People's Republic of China 199304-15 approved - 30 —
6-lining? A clamping strip;
13-crossbeam,
18-lower frame
13-seat clamp;
1993-12-01 implementation
1-skin;
7-crossbeam, 8-saddle beam;
QB/T1717--93
3-support plate;
9-fire,
three-spring saddle. See Figure 3 for an example:
【a front support plate,
7 a rear drop plate,
13 a pressure plate;
2-adjusting screw;
8-bag hanging piece,
14-clamping bolt;
4-central tightening piece,
10-pressure plate;
5 left vertical spring;
11-clamping bolt;
3-front vertical spring;
9-left vertical spring:
15—plywood;
4-saddle support;
10-right vertical spring;
16-upper beam,
6-right vertical spring;
12 plywood;
5-epidermis,
11—cross-dyeing
17—lower frame
13-joining uncle
6-lining leather,
12 seat clamp;
3.1.3 Spring saddle. See Figure 4 for an example,
1-rear support plate; 2-spring clip:
QB/T1717--93
3-hanging column:
8-adjusting screw; 9-front spring frame;
13-front spring clip;
14-saddle beam;
3.1.4, no standing seat. See Figure 5 for an example. 1-skin;
5-saddle beam;
4-suspension spring 5-buckle bowl;
10-front support plate;
15-clamping bolt;
2-gasket;
6--plywood;
11-open rivet
16-pressure plate;
3-support plate;
?-tightening bolt;
6-skin:
7-saddle block:
12-front spring
17-plywood,
a clamping piece,
8-pressure plate
18-seat
3.1.5 Other types of saddles.
3.2 Type size (see Figure 6)
3.3 Product code
QB/T 1717-93
The product is composed of the type code and the factory design serial number. The type code is shown in Table 1. Table
Example:
Technical requirements
Fatigue performance
(Double) vertical spring saddle
Spring saddle
Suspended spring saddle
Spring saddle
Other types of saddles
Factory design serial number
Three vertical spring saddle
Put a heavy hammer with a mass of 70k on the surface of the saddle. After 70,000 vibrations, all parts of the saddle (except the pad and lining) shall not fall off or be damaged.
4.2 Fixing performance
At the place with large torque within 25mm from the front or rear of the saddle, apply 1668N and 222N force in the vertical and horizontal directions respectively. After 30s, there is no relative movement between the seat clamp and the saddle tube, the splint and the saddle parts. 4.3 Cold resistance performance
This requirement is only applicable to saddles made of plastic pallets. —33-
QB/T1717--93
After placing the saddle at -20℃ for 30min: use a steel ball with a mass of 8kg to drop from a height of 600mm to impact the surface of the saddle at a distance of two-thirds from the front end. No parts shall be damaged. 4.4 Vertical spring compression performance
After 30s, the permanent deformation of the spring compressed with a force of 300N is not greater than 0.5mm. 4.5 Tensile properties of tension springs
Pull the tension spring to make it one third longer than the original length, and its permanent deformation after five consecutive pulls shall not exceed 1.5mm. 4.6 Appearance quality of electroplated parts
Shall comply with the provisions of Article 5.1.1 of 0B/T1217 for Class III parts. 4.7 Paint quality
4.7.! The appearance of the paint film shall comply with the provisions of Article 4.1.1 of QB/T1218 for Class II parts. 4.7.2 The corrosion resistance of the paint film shall comply with the provisions of Article 4.3 of QB/T1218 for Class II parts. 4.8
Appearance quality of saddles
The saddles shall be firmly assembled without looseness. The appearance of the drum seat shall not have obvious tilting. The saddle surface shall be free of cracks, obvious scars, wrinkles and color differences. 4.8.4
The rivets on the saddle surface shall be flat and smooth.
Test method
The testing equipment and instruments used in the tests of this chapter shall comply with the provisions of GB12742. 5.1 Fatigue performance test
5.1.1 Fix the saddle horizontally on the eccentric wheel structure fatigue testing machine with a frequency of 2.5Hz and an amplitude of 16mm, and tighten the clamping nut with a tightening torque of 19.6Nm.
5.1.2 Place a heavy hammer with a mass of 70k on the surface of the saddle at two-thirds of the front end of the full length, and conduct fatigue performance test in accordance with the provisions of Article 4.1 of this chapter (see Figure 7).
5.1.3 Indenter
Indenter dimension accuracy is IT15, and the shape part is made of rubber with hardness HA65°~75. 34
QB/T171793
Indenter shape is divided into two types, double (two) vertical spring (tension spring structure) saddle is shown in Figure 8, and other types of saddles use the indenter in Figure 9. @80
15°15°
5.2 Fixing performance test
QB/T1717—93
5.2.1 Install the saddle horizontally on the tube sample rod L, adjust the position of the seat clamp and the clamp plate to make the teeth mesh, and then tighten the nut with a clamping torque of 19.6Nm (the double-headed screw should be tightened at both ends), and then test according to the requirements of Article 4.2. The test sequence is vertical direction first and then horizontal direction (see Figure 10). F
5.2.2 The diameter of the saddle pipe sample is α22*8amm, and the surface roughness is Ra1.6~3.2μm. 5.3 Cold resistance performance test
5.3.1 Install the saddle horizontally on a special test fixture with a drop ball height of 600mm, and tighten the nut with a torque of 19.6Nm.
5.3.2 Put the fixed saddle into a low-temperature freezer, place it at -20±2℃ for 30min, then take it out, and immediately install it on the test device at room temperature, and carry out the cold resistance impact test according to the requirements of Article 4.3 (see Figure 11). 009
5.4 Compression performance test of vertical spring
HRA>40
Place the two ends and the side of the vertical spring on the special inspection fixture for vertical control (see Figure 12), and use a vernier caliper of 0-150mm to measure the original length of the vertical spring, and then use a 01000N spring tension and compression testing machine to test according to the requirements of Article 4.7 of this standard. Then use the same method to measure its length, and finally determine the permanent deformation. H0.06
5.5 Tension test of tension spring
Hang one end of the tension spring on the tension and compression testing machine, and hang a heavy paving with a mass of 2kg on the other end. On the tension and compression testing machine. Use a 0-150mm vernier caliper to measure the length of the effective coils of the tension spring, and test it with a 0-1000N spring tension and compression testing machine according to Article 4.8 of this standard, and then use the same method to measure its length, and finally determine the permanent deformation (see Figure 13). 2kg
5.6 Appearance quality test of electroplated parts
According to Article 5.1.2 of QB/T1217.
5.7 Paint quality test
5.7.1 Appearance of paint film shall be in accordance with Article 5.1 of QB/T1218. 5.7.2 Anti-corrosion ability of paint film
Test parts: upper beam, lower beam, cross beam, left vertical spring, right vertical spring, pressure plate. Test location: outer side of the part.
Test method shall be in accordance with Article 5.3 of QB/T1218. 5.8 Saddle appearance quality test
Use visual method according to 4.8.
6 Inspection rules
6.1 Products must be inspected and qualified by the inspection department of the manufacturer and accompanied by a certificate of conformity before they can leave the factory. 37
6.2 Unit products, pieces.
6.3 Factory inspection: Use GB2828.
6.3.1 Sampling plan: secondary sampling plan. QB/T 1717—93
6.3.2 Batch quality: Calculated by the number of unqualified products per 100 units of products. 6.3.3 Inspection items, inspection level (IL), unqualified classification, and acceptable quality level (AQL) are shown in Table 2. Table 2
Inspection items
Appearance quality of electroplated parts
Appearance quality of paint film
Appearance quality of saddle
Text of this standard
6.4 Type inspection: Adopt GB2829,
6.4.1 Inspection cycle: month.
6.4.2 Sampling method: Secondary sampling plan n
6.4.3 Batch quality: Calculated by the number of unqualified products per unit product. ...
Unqualified classification
6.4.4 Inspection items, discrimination level (DL), unqualified classification, unqualified quality level (RQL), sample size (n) The discrimination array is shown in Table 3.
Inspection items
Fatigue performance
Fixed performance
Cold resistance
Standing compression performance
Stretching performance
Anti-spring tensile performance
Anti-abrasion ability of film
Articles of this standard
7 Marking, packaging, transportation, storage
7.1 Marking
The following markings shall be placed on the outside of the product packaging box:
. Manufacturer name,
b. Product name;
e. Trademark
d. Product code:
Unqualified classification
Sample season size
2, = 6
n, = 5
P, = 5
F, = 5
e. Standard code, number, name (can also be marked on the product or manual) - 38 -
Determination array
4, = 4
A, = 4
QB/T1717-—93
fBox size (length × width × height) and volume; 9. Quantity,
h, net weight and gross weight:
. Handle with care, afraid of moisture mark!
Production batch number at the time of shipment.
7.2 Packaging
7.2.1Products shipped should be accompanied by product certificates. 7.2.2Each product should be packaged in a single small package, with a carton or other box, and then tied firmly with strapping tape. Special cases can be determined according to user requirements. 7.3 Transportation
The packaging box containing the product should be placed flat, and should be handled with care, not pushed or folded. During transportation, it should not be exposed to rain or snow. It is strictly forbidden to mix with corrosive materials such as acids and alkalis for transportation. 7.4 Storage
7.4.1 The product should be placed in a dry, ventilated place that can be protected from rain and snow. It should not be placed together with active chemicals or other substances. The cartons should be at least 100m from the ground and the stacking height should not exceed 2m. 7.4.2 From the date of leaving the factory, the product should not rust within nine months under normal transportation and storage conditions. Additional instructions:
This standard is proposed by the Quality Standards Department of the Ministry of Light Industry. This standard is approved by the National Bicycle Standardization Center. This standard is approved by Shanghai Bicycle Saddle Factory, Tianjin Bicycle Saddle Factory, Guangzhou Bicycle Saddle Factory, Island Bicycle Saddle Factory, Shenyang Bicycle Saddle Factory, Chengdu Bicycle Parts Factory No. 3, and Jiangyin Saddle Handbrake! "Fu Gong drafted. Who drafted this standard? Yu Haorong, Xu Xiaomin, Fang Chengyu, Che Lin. 1892 Anti-corrosion ability of paint film
Test parts: upper beam, lower beam, cross beam, left vertical spring, right vertical spring, pressure plate. Test location: outer side of parts.
Test method is in accordance with Article 5.3 of QB/T1218. 5.8 Saddle appearance quality test
Use visual method in accordance with Article 4.8.
6 Inspection rules
6.1 Products must be inspected and qualified by the inspection department of the manufacturer and accompanied by a certificate of conformity before they can leave the factory. 37
6.2 Unit products, only.
6.3 Factory inspection: GB2828 is adopted.
6.3.1 Sampling plan: secondary sampling plan. QB/T 1717—93
6.3.2 Batch quality: calculated by the number of unqualified products per 100 units of products. 6.3.3 Inspection items, inspection level (IL), non-conforming classification, and acceptable quality level (AQL) are shown in Table 2. Table 2
Inspection items
Appearance quality of electroplated parts
Appearance quality of paint film
Appearance quality of saddle
Text of this standard
6.4 Type inspection: GB2829 is adopted,
6.4.1 Inspection cycle: month.
6.4.2 Sampling method: secondary sampling plan n
6.4.3 Batch quality: calculated by the number of non-conforming products per unit product. ...
Non-conforming classification
6.4.4 Inspection items, discrimination level (DL), non-conforming classification, non-conforming quality level (RQL), sample size (n) The discrimination array is shown in Table 3.
Inspection items
Fatigue performance
Fixed performance
Cold resistance
Standing compression performance
Stretching performance
Anti-spring tensile performance
Anti-abrasion ability of film
Articles of this standard
7 Marking, packaging, transportation, storage
7.1 Marking
The following markings shall be placed on the outside of the product packaging box:
. Manufacturer name,
b. Product name;
e. Trademark
d. Product code:
Unqualified classification
Sample season size
2, = 6
n, = 5
P, = 5
F, = 5
e. Standard code, number, name (can also be marked on the product or manual) - 38 -
Determination array
4, = 4
A, = 4
QB/T1717-—93
fBox size (length × width × height) and volume; 9. Quantity,
h, net weight and gross weight:
. Handle with care, afraid of moisture mark!
Production batch number at the time of shipment.
7.2 Packagingwww.bzxz.net
7.2.1Products shipped should be accompanied by product certificates. 7.2.2Each product should be packaged in a single small package, with a carton or other box, and then tied firmly with strapping tape. Special cases can be determined according to user requirements. 7.3 Transportation
The packaging box containing the product should be placed flat, and should be handled with care, not pushed or folded. During transportation, it should not be exposed to rain or snow. It is strictly forbidden to mix with corrosive materials such as acids and alkalis for transportation. 7.4 Storage
7.4.1 The product should be placed in a dry, ventilated place that can be protected from rain and snow. It should not be placed together with active chemicals or other substances. The cartons should be at least 100m from the ground and the stacking height should not exceed 2m. 7.4.2 From the date of leaving the factory, the product should not rust within nine months under normal transportation and storage conditions. Additional instructions:
This standard is proposed by the Quality Standards Department of the Ministry of Light Industry. This standard is approved by the National Bicycle Standardization Center. This standard is approved by Shanghai Bicycle Saddle Factory, Tianjin Bicycle Saddle Factory, Guangzhou Bicycle Saddle Factory, Island Bicycle Saddle Factory, Shenyang Bicycle Saddle Factory, Chengdu Bicycle Parts Factory No. 3, and Jiangyin Saddle Handbrake! "Fu Gong drafted. Who drafted this standard? Yu Haorong, Xu Xiaomin, Fang Chengyu, Che Lin. 1892 Anti-corrosion ability of paint film
Test parts: upper beam, lower beam, cross beam, left vertical spring, right vertical spring, pressure plate. Test location: outer side of parts.
Test method is in accordance with Article 5.3 of QB/T1218. 5.8 Saddle appearance quality test
Use visual method in accordance with Article 4.8.
6 Inspection rules
6.1 Products must be inspected and qualified by the inspection department of the manufacturer and accompanied by a certificate of conformity before they can leave the factory. 37
6.2 Unit products, only.
6.3 Factory inspection: GB2828 is adopted.
6.3.1 Sampling plan: secondary sampling plan. QB/T 1717—93
6.3.2 Batch quality: calculated by the number of unqualified products per 100 units of products. 6.3.3 Inspection items, inspection level (IL), non-conforming classification, and acceptable quality level (AQL) are shown in Table 2. Table 2
Inspection items
Appearance quality of electroplated parts
Appearance quality of paint film
Appearance quality of saddle
Text of this standard
6.4 Type inspection: GB2829 is adopted,
6.4.1 Inspection cycle: month.
6.4.2 Sampling method: secondary sampling plan n
6.4.3 Batch quality: calculated by the number of non-conforming products per unit product. ...
Non-conforming classification
6.4.4 Inspection items, discrimination level (DL), non-conforming classification, non-conforming quality level (RQL), sample size (n) The discrimination array is shown in Table 3.
Inspection items
Fatigue performance
Fixed performance
Cold resistance
Standing compression performance
Stretching performance
Anti-spring tensile performance
Anti-abrasion ability of film
Articles of this standard
7 Marking, packaging, transportation, storage
7.1 Marking
The following markings shall be placed on the outside of the product packaging box:
. Manufacturer name,
b. Product name;
e. Trademark
d. Product code:
Unqualified classification
Sample season size
2, = 6
n, = 5
P, = 5
F, = 5
e. Standard code, number, name (can also be marked on the product or manual) - 38 -
Determination array
4, = 4
A, = 4
QB/T1717-—93
fBox size (length × width × height) and volume; 9. Quantity,
h, net weight and gross weight:
. Handle with care, afraid of moisture mark!
Production batch number at the time of shipment.
7.2 Packaging
7.2.1Products shipped should be accompanied by product certificates. 7.2.2Each product should be packaged in a single small package, with a carton or other box, and then tied firmly with strapping tape. Special cases can be determined according to user requirements. 7.3 Transportation
The packaging box containing the product should be placed flat, and should be handled with care, not pushed or folded. During transportation, it should not be exposed to rain or snow. It is strictly forbidden to mix with corrosive materials such as acids and alkalis for transportation. 7.4 Storage
7.4.1 The product should be placed in a dry, ventilated place that can be protected from rain and snow. It should not be placed together with active chemicals or other substances. The cartons should be at least 100m from the ground and the stacking height should not exceed 2m. 7.4.2 From the date of leaving the factory, the product should not rust within nine months under normal transportation and storage conditions. Additional instructions:
This standard is proposed by the Quality Standards Department of the Ministry of Light Industry. This standard is approved by the National Bicycle Standardization Center. This standard is approved by Shanghai Bicycle Saddle Factory, Tianjin Bicycle Saddle Factory, Guangzhou Bicycle Saddle Factory, Island Bicycle Saddle Factory, Shenyang Bicycle Saddle Factory, Chengdu Bicycle Parts Factory No. 3, and Jiangyin Saddle Handbrake! "Fu Gong drafted. Who drafted this standard? Yu Haorong, Xu Xiaomin, Fang Chengyu, Che Lin. 189
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