Some standard content:
Industry Standard of the People's Republic of China
Bicycle Industry Standard
1993-04-—15 Issued
1993-07-29
1993—12—01 Implementation
199403--01
Ministry of Light Industry of the People's Republic of China
WQB 1714-93
Household Bicycle
QB/T 1715—93
QB/T 1716—93
QB/T 1717--93
QB/T 1718—93
QB/T 1719—93
QB/T1720-93
QB/T1721--93
QB/T 1722--93
QB/T 1723-93
QB 1724—93
QB 1802-—93
Naming and model compilation method
Bicycle
Bicycle
Bicycle
Bicycle
Bicycle
Bicycle
Bicycle
Bicycle
Bicycle
Handlebar:
Ordinary front and rear brakes·
Caliper brake·
Chain guard·
Bell·
Insurance document
Rim·
W+(21)
*-( 61)
（86)
+(33 )
.--(99)
-(111)
1 Subject content and scope of application
Industry Standard of the People's Republic of China
Bicycle
Ordinary front and rear brakes
QB/T 1718-93
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of ordinary front and rear brakes (hereinafter referred to as front brakes and rear brakes) of bicycles. This standard applies to the front brakes and rear brakes for ordinary, heavy-load and light-use bicycles specified in QB1714 "Bicycle Naming and Model Compilation Method".
2 Reference standards
GB2828
GB2829
GB3565
GB3566
GB12742
Counting sampling procedure and dummy sample table for batch inspection (applicable to inspection of continuous batches)Counting sampling procedure and dummy sample table for periodic inspection (applicable to inspection of stability of production process)Safety requirements for bicycles
Requirements for bicycle assembly
Technical conditions for bicycle testing equipment and instruments QB/T1217
QB/T1218
3 Product classification
Technical conditions for bicycle electroplating
Technical conditions for bicycle painting
3.1 Basic types and names of parts
3.1.1 See
Figure 1 for an example of a single-sided front.
1-fastening screw; 2-pull tube upper joint; 3-front pull tube, 4-front pull tube lower joint; 5-front brake; 6-brake skin; 7-left brake skin box; 8-right brake skin box;
9-left front gate plate; 10-right front gate plate, 11-gate fork support; 12-clamp, 13-flat head screw Figure
Approved by the Ministry of Light Industry of the People's Republic of China on 1993-04-15 40
Implemented on 1993-12-01
An example of a single-sided rear brake is shown in Figure 2.
03.8+0.18
1 A rear pull tube:
7 A flat washer:
2 A pull tube lower joint;
8 A long pull rod:
13 A rear crank rivet:
18 A left rear gate plate,
QB/T:1718—93
3 A lower joint screw;
4 A front crank;
9 A rear crank fire plate; 10 A rear crank bushing, 14 An adjusting screw joint!
15-adjusting nut;
20-clamping plate,
19-right rear gate plate;
25-flat head screw,
24-brake skin;
3.1.3 See Figure 8 for an example of a double-sided front brake.
1-tightening gate screw:
2-pull pipe upper joint!
8-right brake skin box!
7-left brake box;
12--brake fork support;
5-through nail;6-front crank washer
12-rear crank spring;
11-rear throw;
16-adjusting nail;
21-brake fork support;
26-tightening screw
17-rear fork,
22-left brake box:
27-pull pipe upper connection
23-- Right brake leather box:
6 a leather;
4 a front pull tube lower joint,
3 a front pull tube:
5 a front idle fork:
9 a flat head screw;
10 a left brake box support plate;
11 a right brake box support plate:
13 a left front brake plate;
14 a right front brake plate
WWW.bzsoso:com3.1.4
See Figure 4 for an example of the double-sided rear type.
03.8+0.18
1-rear pull tube (1)
6-nut bushing,
QB/T 1718-93
2-rear pull tube (1) lower joint)
7-front crank,
12-rear pull tube (2);
17-left brake leather box;
3.2 product code
8-long pull rod:
13-rear fork,
18-right brake leather box!
3-front crank joint!
9-left rear crank;
14-left rear gate plate,
19--gate shoe;
22-gate tightening screw;
4-through screw,
10--right rear crank;
15-right rear gate plate,
20-flat head screw
23-pull pipe upper joint
5-pipe gasket;
11-short pull rod,
16-gate fork support
21-pull pipe lower joint;
The product code is composed of type code, specification code, surface coating code and factory design serial number. Xx
Factory design serial number
Surface coating code
Specification code
Type code
3.2.1 See Table 1 for type code.
See Table 2 for specification code.
Complete wheel
.Diameter series
Surface coating code See Table 3.
3.2.4 Factory number
QB/T 1718---93
Single-sided front and rear brake
Double-sided front and rear brake
Front brake is indicated by 01, 03, 05., and rear brake is indicated by 02, 04, C6**. 3.2.5 Product code example
4 Technical requirements
4.1 Braking system sensitivity
-Paint
Use a 710mm bicycle
Use a unilateral force of 44.5N on the left and right brake handles of the vehicle, and the brake shoes can touch the wheels. After removing this force, the brake shoes can quickly return to their original positions.
4.2 Braking performance
It shall comply with the provisions of Article 5.5 of GB3565. 4.3 Combination strength of brake shoes and brake shoe box
QB/T 1718-93
When a static load of 294N in the longitudinal direction and 147N in the lateral direction is applied to the brake shoes, the brake shoes shall not fall out of the brake shoe box or crack. 4.4 Breaking force of short pull rod and front and rear pull tube assembly The connection between the pull tube joints of the front and rear brakes and the front and rear pull tubes and short pull rods should be firm, and the minimum breaking force is 980N. 4.5 Electroplating quality
Chrome parts: The front brake is a second-class part, and the rest are third-class parts. Inlaid parts: The left and right front gates, the left and rear gates, the left and right gate leather boxes are first-class parts, and the rest are second-class parts. 4.5.1 The appearance of electroplated parts shall comply with the provisions of Article 5.1.1 of QB/T1217: 4.5.2 The corrosion resistance of chrome-plated parts shall comply with the provisions of Article 5.1.1 of QB/T1217. 4.6 Oil quality
4.6.1 The paint film shall comply with the requirements of the third-class parts in Article 4.1.1 of 0B/T1218. 4.6.2 The corrosion resistance of the paint film shall comply with the requirements of Article 4.3. Requirements for the following items 5. Test methods
The finished vehicle used in the tests of this chapter shall comply with the provisions of GB3566, and the testing equipment and instruments used shall comply with the provisions of GB12712.
'5.1 Braking system flexibility test
This test shall be carried out on the finished vehicle. After the front and rear brakes are adjusted to the effective braking position, a braking force of 44.5N is applied vertically at 25mm from the end of the handlebar, and then observed and inspected. Repeat 5 times. 5.2 Braking performance test
According to the provisions of Chapter 22 of GB3565.
5.3 Brake shoe and brake shoe box strength test
5.3. Install the brake shoe and brake shoe box assembly on the special fixture I (the three-sealed brake shoe box opening is facing downward), and apply the horizontal static load at 1/2 of the brake shoe thickness as shown in the figure and. Then install the intermediate skin and the brake skin box assembly on the clamp II, and apply a lateral static load at 1/2 of the brake skin thickness as shown in Figure B. The full load time each time shall not exceed 5$. 5.3.2 Tool I, pressure head I, fixture, bottle head II, their main dimensions are shown in Figures 5 and 6. Pressure head I
Block skin center
- 44 -
Clamp I
WwW. Figure 6
QB/T 1718-93
5.4 Short pull rod two front and rear tube button life parts tensile test 5,41 The front and rear pull baskets of the store brake are connected to the fire, the front and rear pull pipes, the pull pipe upper joints and other red parts are assembled with the test pull rod, and the gate screws and nuts are tightened with a force of 11.76N㎡, as shown in Figures 7 and 8, and placed on the tensile machine for tensile testing. The tensile speed is 20mm/min. The short pull rod used in the test is a 3.5×2U0mm cold-drawn steel wire with chrome plating. Only one steel wire is used each year.
5.4.2 Torque wrench, 0~49Vm.
5.4.3 Special tension plate, see Figure 9.
0.5×45°
5.5 Electroplating quality test
Material: 45
HRC40~45
Potential treatment
39.3+0.22
5.5.1, the outer size of the electroplated parts shall be in accordance with the provisions of Article 5.1.2 of QB/T1217. 5.5.2 Anti-corrosion ability of chrome-plated parts
Test parts: front and rear bends. Test location: the stop surface of the parts. The test method shall be in accordance with the provisions of Article 5.4.2 and Appendix C of QB/T1217. 45
5.6 Paint quality test
QB/T 1718—93
5.6.1 Paint appearance shall be in accordance with the provisions of Article 5.1 of QB/T1218. 5.6.2 Paint film corrosion resistance
Test parts: rear brake fork, long pull rod. Test location: front view of parts. Test method shall be in accordance with the provisions of Article 5.3 of QB/T1218. 6 Inspection rules
6.1 Products shall be inspected and qualified by the inspection department of the production factory and accompanied by a certificate of conformity before they can be shipped. 6.2 Unit product: pair.
6.3 Factory inspection: GB 2828 shall be used.
6.3.1 Sampling plan: -1 throw sampling plan,
6.3.2 Batch quality: calculated by the number of unqualified products per 100 units of products. See Table 4 for inspection items, inspection level (IL), unqualified classification, and qualified quality level (AQL). 6.3.3
Appearance quality of electric key parts
Appearance quality of paint
Case of this standard
6.4 Type inspection: GB2829 is adopted.
B,4.1 Inspection cycle: - months, of which the braking performance is one year. 6,4.2 Sampling plan: two sampling plans. 4.3 Batch quality: calculated by the number of unqualified products per unit of product. Unqualified classification
6.4.4 Inspection items, discrimination level (DL), unqualified classification, unqualified quantity level (RQL), sample size (n) and discrimination array are shown in Table 5.
Inspection items
Braking system sensitivity
Braking performance
Combination of leather and leather box
Pulling tube combination tensile test
Corrosion resistance of chrome-plated parts
Corrosion resistance of paint film
Clause of this standard
Unqualified classification
Book size
nz = 6
n, = 6
7, = 5
Judgment array
R, = s
R, = G
7 Marking, packaging, transportation, storage
7.1 Marking
The following punctuation must be engraved on the surface of the packaging box:
. Name of manufacturer!
b, product name,
c. Trademark
d. Product code
QB/T1718—93
e, standard code, name (can also be marked on the product or the manual))f, box size (length × width × height) and volume; 9. Quantity:
h. Net weight and gross weight.
1. Handle with care, label;
, factory date, batch size
7.2 Packaging
7.2.1 Products shipped should be accompanied by product certificates. 7.2.2 Each product should be packed in a single small package, an external carrier box or a common box, and then tied firmly with strapping tape or other methods. Special conditions can be determined according to user requirements. 7.3 Transportation
The packaging box containing the product should be flat, and should be handled and placed with care during transportation, and should not be dropped. During transportation, the product shall not be exposed to the sun or rain, and shall not be mixed with corrosive substances such as acid and alkali for transportation. 7.4 Storage
7.4.1 The product shall be placed in an airtight, ventilated, and anti-scorching and snow-proof environment. It shall not be placed together with active chemicals or dust-generating materials. The box shall be placed on a cushion and shall be at least 100 meters away from the ground. 7.4.2 The product shall not rust within 9 months from the date of leaving the factory under normal transportation and storage conditions. Additional remarks:
This standard is proposed by the Quality Standards Department of the Ministry of Light Industry. This standard is organized by the National Bicycle Standardization Center. This standard is drafted by Jiangyin Saddle Seat Factory, Tianjin Third Bicycle Parts Factory, Zhou Bicycle Seat Factory, Suzhou Bicycle Parts Factory No. 2, Xin'anhui Bicycle Parts Factory, and Anyin Bicycle Parts Factory No. 7. The main drafters of this standard are: Ji Hong, Jin Xifu, and Cao Gang. 47
People's Republic of China
Industry Standards
Bicycle Industry Standards
Light Industry Standardization Editorial and Publishing Committee
Address: No. 12, Guanghua Road, Chaowai, Beijing
Tel: 5060032~2309
Postal Code: 100020
Internal information is not allowed to be reproduced
Print Quantity: 3000 copies Price: 25.00 yuan2 Anti-corrosion ability of chrome-plated parts
Test parts: front fork, front crank. Test location: front view surface of parts. Test method shall be in accordance with the provisions of Article 5.4.2 and Appendix C of QB/T1217. 45
5.6 Paint quality test
QB/T 1718-93
5.6.1 Paint appearance shall be in accordance with the provisions of Article 5.1 of QB/T1218. 5.6.2 Anti-corrosion ability of paint film
Test parts: rear brake fork, long pull rod. Test location: front view surface of parts. Test method shall be in accordance with the provisions of Article 5.3 of QB/T1218. 6 Inspection rules
6.1 Products shall be inspected and qualified by the inspection department of the manufacturer and accompanied by a certificate of conformity before they can be shipped. 6.2 Unit product: pair.
6.3 Factory inspection: GB 2828 shall be used.
6.3.1 Sampling plan: -1 throw sampling plan,
6.3.2 Batch quality: calculated by the number of unqualified products per 100 units of products. See Table 4 for inspection items, inspection level (IL), unqualified classification, and qualified quality level (AQL). 6.3.3
Appearance quality of electric key parts
Appearance quality of paint
Case of this standard
6.4 Type inspection: GB2829 is adopted.
B,4.1 Inspection cycle: - months, of which the braking performance is one year. 6,4.2 Sampling plan: two sampling plans. 4.3 Batch quality: calculated by the number of unqualified products per unit of product. Unqualified classification
6.4.4 Inspection items, discrimination level (DL), unqualified classification, unqualified quantity level (RQL), sample size (n) and discrimination array are shown in Table 5.
Inspection items
Braking system sensitivity
Braking performance
Combination of leather and leather box
Pulling tube combination tensile test
Corrosion resistance of chrome-plated parts
Corrosion resistance of paint film
Clause of this standard
Unqualified classification
Book size
nz = 6
n, = 6
7, = 5
Judgment array
R, = s
R, = G
7 Marking, packaging, transportation, storage
7.1 Marking
The following punctuation must be engraved on the surface of the packaging box:
. Name of manufacturer!
b, product name,
c. Trademark
d. Product code
QB/T1718—93
e, standard code, name (can also be marked on the product or the manual))f, box size (length × width × height) and volume; 9. Quantity:
h. Net weight and gross weight.
1. Handle with care, label;
, factory date, batch size
7.2 Packaging
7.2.1 Products shipped should be accompanied by product certificates. 7.2.2 Each product should be packed in a single small package, an external carrier box or a common box, and then tied firmly with strapping tape or other methods. Special conditions can be determined according to user requirements. 7.3 Transportation
The packaging box containing the product should be flat, and should be handled and placed with care during transportation, and should not be dropped. During transportation, the product shall not be exposed to the sun or rain, and shall not be mixed with corrosive substances such as acid and alkali for transportation. 7.4 Storage
7.4.1 The product shall be placed in an airtight, ventilated, and anti-scorching and snow-proof environment. It shall not be placed together with active chemicals or dust-generating materials. The box shall be placed on a cushion and shall be at least 100 meters away from the ground. 7.4.2 The product shall not rust within 9 months from the date of leaving the factory under normal transportation and storage conditions. Additional remarks:
This standard is proposed by the Quality Standards Department of the Ministry of Light Industry. This standard is organized by the National Bicycle Standardization Center. This standard is drafted by Jiangyin Saddle Seat Factory, Tianjin Third Bicycle Parts Factory, Zhou Bicycle Seat Factory, Suzhou Bicycle Parts Factory No. 2, Xin'anhui Bicycle Parts Factory, and Anyin Bicycle Parts Factory No. 7. The main drafters of this standard are: Ji Hong, Jin Xifu, and Cao Gang. 47
People's Republic of China
Industry Standards
Bicycle Industry Standards
Light Industry Standardization Editorial and Publishing Committee
Address: No. 12, Guanghua Road, Chaowai, Beijing
Tel: 5060032~2309
Postal Code: 100020
Internal information is not allowed to be reproduced
Print Quantity: 3000 copies Price: 25.00 yuan2 Anti-corrosion ability of chrome-plated parts
Test parts: front fork, front crank. Test location: front view surface of parts. Test method shall be in accordance with the provisions of Article 5.4.2 and Appendix C of QB/T1217. 45
5.6 Paint quality test
QB/T 1718-93
5.6.1 Paint appearance shall be in accordance with the provisions of Article 5.1 of QB/T1218. 5.6.2 Anti-corrosion ability of paint film
Test parts: rear brake fork, long pull rod. Test location: front view surface of parts. Test method shall be in accordance with the provisions of Article 5.3 of QB/T1218. 6 Inspection rules
6.1 Products shall be inspected and qualified by the inspection department of the manufacturer and accompanied by a certificate of conformity before they can be shipped. 6.2 Unit product: pair.
6.3 Factory inspection: GB 2828 shall be used.
6.3.1 Sampling plan: -1 throw sampling plan,
6.3.2 Batch quality: calculated by the number of unqualified products per 100 units of products. See Table 4 for inspection items, inspection level (IL), unqualified classification, and qualified quality level (AQL). 6.3.3
Appearance quality of electric key parts
Appearance quality of paint
Case of this standard
6.4 Type inspection: GB2829 is adopted.
B,4.1 Inspection cycle: - months, of which the braking performance is one year. 6,4.2 Sampling plan: two sampling plans. 4.3 Batch quality: calculated by the number of unqualified products per unit of product. Unqualified classification
6.4.4 Inspection items, discrimination level (DL), unqualified classification, unqualified quantity level (RQL), sample size (n) and discrimination array are shown in Table 5.
Inspection items
Braking system sensitivity
Braking performance
Combination of leather and leather box
Pulling tube combination tensile test
Corrosion resistance of chrome-plated parts
Corrosion resistance of paint film
Clause of this standard
Unqualified classification
Book size
nz = 6
n, = 6
7, = 5
Judgment array
R, = s
R, = G
7 Marking, packaging, transportation, storage
7.1 Marking
The following punctuation must be engraved on the surface of the packaging box:
. Name of manufacturer!
b, product name,
c. Trademark
d. Product codewww.bzxz.net
QB/T1718—93
e, standard code, name (can also be marked on the product or the manual))f, box size (length × width × height) and volume; 9. Quantity:
h. Net weight and gross weight.
1. Handle with care, label;
, factory date, batch size
7.2 Packaging
7.2.1 Products shipped should be accompanied by product certificates. 7.2.2 Each product should be packed in a single small package, an external carrier box or a common box, and then tied firmly with strapping tape or other methods. Special conditions can be determined according to user requirements. 7.3 Transportation
The packaging box containing the product should be flat, and should be handled and placed with care during transportation, and should not be dropped. During transportation, the product shall not be exposed to the sun or rain, and shall not be mixed with corrosive substances such as acid and alkali for transportation. 7.4 Storage
7.4.1 The product shall be placed in an airtight, ventilated, and anti-scorching and snow-proof environment. It shall not be placed together with active chemicals or dust-generating materials. The box shall be placed on a cushion and shall be at least 100 meters away from the ground. 7.4.2 The product shall not rust within 9 months from the date of leaving the factory under normal transportation and storage conditions. Additional remarks:
This standard is proposed by the Quality Standards Department of the Ministry of Light Industry. This standard is organized by the National Bicycle Standardization Center. This standard is drafted by Jiangyin Saddle Seat Factory, Tianjin Third Bicycle Parts Factory, Zhou Bicycle Seat Factory, Suzhou Bicycle Parts Factory No. 2, Xin'anhui Bicycle Parts Factory, and Anyin Bicycle Parts Factory No. 7. The main drafters of this standard are: Ji Hong, Jin Xifu, and Cao Gang. 47
People's Republic of China
Industry Standards
Bicycle Industry Standards
Light Industry Standardization Editorial and Publishing Committee
Address: No. 12, Guanghua Road, Chaowai, Beijing
Tel: 5060032~2309
Postal Code: 100020
Internal information is not allowed to be reproduced
Print Quantity: 3000 copies Price: 25.00 yuan2 The product should not rust within 9 months under normal transportation and storage conditions from the date of leaving the factory. Additional remarks:
This standard was proposed by the Quality Standards Department of the Ministry of Light Industry. This standard was drafted by the National Bicycle Standardization Center. This standard was drafted by Jiangyin Saddle Seat Factory, Tianjin Third Bicycle Parts Factory, Zhou Bicycle Seat Factory, Suzhou Bicycle Parts Factory No. 2, Xin'anhui Bicycle Parts Factory, and Anyin Bicycle Parts Factory No. 7. The main drafters of this standard are: Hong Jinxifu Cao Gang. 47
People's Republic of China
Industry Standards
Bicycle Industry Standards
Light Industry Standardization Editorial and Publishing Committee
Address: No. 12, Guanghua Road, Chaowai, Beijing
Tel: 5060032~2309
Postal Code: 100020
Internal information is not allowed to be reproduced
Print Quantity: 3000 copies Price: 25.00 yuan2 The product should not rust within 9 months under normal transportation and storage conditions from the date of leaving the factory. Additional remarks:
This standard was proposed by the Quality Standards Department of the Ministry of Light Industry. This standard was drafted by the National Bicycle Standardization Center. This standard was drafted by Jiangyin Saddle Seat Factory, Tianjin Third Bicycle Parts Factory, Zhou Bicycle Seat Factory, Suzhou Bicycle Parts Factory No. 2, Xin'anhui Bicycle Parts Factory, and Anyin Bicycle Parts Factory No. 7. The main drafters of this standard are: Hong Jinxifu Cao Gang. 47
People's Republic of China
Industry Standards
Bicycle Industry Standards
Light Industry Standardization Editorial and Publishing Committee
Address: No. 12, Guanghua Road, Chaowai, Beijing
Tel: 5060032~2309
Postal Code: 100020
Internal information is not allowed to be reproduced
Print Quantity: 3000 copies Price: 25.00 yuan
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