This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of bicycle combined saddle pipes (hereinafter referred to as combined saddle pipes). This standard applies to combined saddle pipes for various types of bicycles specified in QB1714 "Bicycle Naming and Model Compilation Method". QB/T 2180-1995 Bicycle Combined Saddle Pipe QB/T2180-1995 Standard download decompression password: www.bzxz.net

Industry Standard of the People's Republic of China
QB2176, 2191-95
QB/T1177~2185-95
Bicycle Industry Standard
199512-05Promulgated
Promulgated by China Light Industry Federation
Implementation in 1996-07-01
Industry Standard of the People's Republic of China
Bicycle
Topic Content and Scope of Application
Combination Saddle Tube
TKANIK
QR/T 2180--55
This standard specifies the product classification, technical requirements, test methods, inspection rules, labeling, packaging, transportation and storage of combination saddle tubes for bicycles (hereinafter referred to as combination saddle tubes). This standard applies to combination saddle tubes for various types of bicycles specified in Q31714 Bicycle Combination Name and Model Compilation Method 3.
2 Reference standards
CB2828
GB2829
Also inspection counting sampling procedures and sampling tables (extended for detailed inspection of batches) Periodic inspection counting sampling procedures and sampling tables (applicable to qualitative inspection of the production process) GB12742 Technical conditions for bicycle inspection equipment and instruments QB/T1217 Technical parts for bicycle chain removal
QE/T3184
Technical conditions for oxidation of bicycle alloy parts QB4 Bicycle naming and model reduction method
3 Product classification
31 Basic types and parts names
3.1.1 Adjustable combination recovery. See Figure 14 for an example. 1-Purchase nail, 2 upper [F plate: 3 lower pressure plate: 4-rule cow follow: 5. Li head, G-sweep Figure 1. Approved by China Light Industry General Association on 1995-12-05. Implemented on 1996~0701. Q0 Hall 218-95. 3.1.2 The pressure plate is relatively forbidden to be combined alone. See Figure 3 for an example. 2. 3.1.3 Other types of combinations Saddle
3.1 Type size (see Figure 3 and Table 1)
1-Fixed block:
2-Upper pressure plate,
$Lower pressure,
A screw river,
5First-class head:
6-Saddle rod
Saddle rod straight D
Saddle rod point diameter male stem
Steel brush parts
3.3 Product code
QBT2180 95
Non-hook parts-:
The product code is composed of the main type code, rod diameter and factory design serial number. The type code is shown in Table 2. Table 2
4 Technical requirements
4. 1 Service performance
Tested joint type combination pipe
Version type combination pipe
Other combination pipes
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Design number
Rod diameter
Joint type combination pipe
After the necessary changes or load changes specified in Article 5.1, the combined pipe shall not break or have cracks visible to the naked eye. 4.2 Strength
On a special device equipped with a combined saddle pipe, apply a force of 080 and 490V in the vertical and horizontal directions at 12Uinm from the center of the combined saddle pipe: after 120%, there shall be no displacement or movement between the parts, and the parts shall not have obvious deformation, rolling or fracture.
4.3 The combined strength of the rod and the elbow
and the combined strength of the support and the elbow shall not be less than 4900N. 4.4 Resistance
QB/T2180--95
After the rod is subjected to a torque of 441N·m, the saddle shall not break. 4.5 The quality of the surface oxidation treatment of aluminum alloy
shall comply with the provisions of QB/T2184 for Class III parts. 4. Appearance quality
4.6.1 The appearance quality of plated parts
shall comply with the provisions of 5.1.1 of Class III parts in QBT12I7. 4.6.2 Each part shall be free of defects such as glossiness, obvious scratches, etc. 5 Test methods
The testing equipment and instruments used in the tests of this chapter shall comply with the provisions of GB12742. 5.1 Fatigue test
5.1.1 Installation
Set the combined saddle pipe face at the safety mark: tighten it with a force of not less than 1·0.00: the support axis should make an angle of 73° with the horizontal plane as shown in Figures 4 and 5.
5.1.2 Test position and direction
The combined assembly shall be subjected to two stages of dynamic load test (Figure 5).
In the first stage, a test cross bracket is first fastened to the combined pipe, and then a vertical downward force is applied alternately at each degree of the support: the test rod shall be installed at the fixed position of the combined saddle part, and its center line shall be at the tightening bolt. The test force shall be applied to the front and rear ends with a distance of 7mm from the center respectively. If the seat on the combined assembly can be adjusted in the horizontal direction, the installation position of the test cross bracket shall be as far back as possible. 51
QB/T2180-95
First stage: In the direction of 90° to the main axis of the support, a backward force is applied in the opposite direction. The force point should pass through the intersection of the main axis of the rod and the actual axis.
5.1.3 Test force, test times and test speed. The test force is shown in Table 3.
Test force
Rod quality
Steel parts
Energy steel parts
Each The CC00 test should be carried out at each stage. The test rate should not exceed 52%. In the group, two strength tests are conducted. 5.2 Strength test of parts www.bzxz.net
Assemble the combined light pipe on the special test equipment (Figure G Figure 7). 19.6·m Install the nut and conduct the test according to the requirements of 4.2. The test sequence is vertical direction first and then horizontal direction. 980
Safety mark
5.3 Strength test of bracket and elbow combination
Assemble the combination The ends of the saddle pipe are placed on the testing machine, and after a 4CON tensile force is applied to the axial direction, the connecting rod and the head shall not fall off.
5.4 Anti-bending strength test
After fixing one end of the rod (see Figure 8), load the rod, and the torque generated by the load on the safety mark is 441N.m.
5.5 The quality test of the lead-acid surface oxidation treatment is in accordance with the provisions of QB/2184.
Test the rod. || tt||2180-95
Full standard
Test part (except the part below the safety mark and the elbow assembly part). 5.6 External quality
S.6. External quality of electrical parts shall be in accordance with the provisions of QB/T1217 5.1.2 5.6-2 4.6.2 6.6 Inspection rules
6 Products shall be inspected by the inspection department and accompanied by a certificate of conformity before leaving the factory. 6.2 Unit products only.
6.3 Factory inspection shall be in accordance with GB2823.
63.1 Sampling plan Secondary sampling plan,
QB/T218--95
.3.2 Batch quality is calculated by the number of unqualified products per 100 units of products 6-3.3 Inspection level (1L). Grid classification. Qualified quality level (AQ) see Table 4 Table
This standard message
Appearance disgusting
See-4 Type inspection adopts G2239.
6.4.1 Inspection weakening
One month,
Ground sampling plan Secondary sampling plan.
Calculated by the number of unqualified products per 100 units of products. Unqualified classification
-KN K-
Inspection item discrimination level (), unqualified classification qualified water (Q1.) Sample size (n) Judgment 6.44
Number about Table 5.
Inspection requirements: Standard test strips
Strength performance
Bending strength
Combination strength
Anti-static
Alloy surface
Grass and chemical treatment
7 Marking, packaging, transportation, storage
7.1 The qualified products of this classification shall have the following markings on the packaging. a. Production name;
u. Product name:
c. Trademark:
d, Product code:
Sample person,
Labeling derivation, abbreviation, name (can also be marked on the product manual): [Carton size (length × width × height) and sample quantity:
Judgment number exceeds
A-4 Rz=5
A,-1 R,-3
A,-4 R,=:
A- R,-?
A,- R,-3
A.-t R,-E
Ar-1 R,-3
A.-1 Kz-5
h, net weight and gross weight +
1 Caution, light weight, mystery mark!
j Factory date or production batch number.
7.1 Packaging
7.2.1 Products should be accompanied by product certificates.
QR/T2180-95
7.2.2 Each product should be packed in a small package, and then packed in a paper box, and then packed with packing tape or other methods. Special instructions can be determined according to user requirements. 7.3 Transportation
The packaging box containing the product should be placed flat, and should be rolled up and held lightly when moving. It is not allowed to be parted. It should not be transported for a long time. It is strictly forbidden to be exposed to acids and other corrosive substances. 7.4 Transportation
7.4.1 The product should be placed in a well-ventilated and product-proof place. It should not be placed together with active chemicals or dust-generating materials. The height of the carton should not be less than 100mm. The stacking height should not exceed 1m. 7.4.2 Since the product is shipped, under normal transportation and replacement conditions, no rust or deterioration will be found within 9 months. Additional explanation:
This standard is issued by the China Light Industry Association, the National Standardization Department of the State-owned Bicycle Standardization Center, and the National Bicycle Standardization Center, Gonghai Bicycle Seat Factory, and Tianzhong Bicycle Seat Factory. The main contributors to the standard are: Fang Chengxi, Yu Shiguang, Junhai, and Shen Dan. 55
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