QB/T 2922-2018Case and bag - Test method for shaking impact (English PDF)
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Issued by
Ministry of Industry and Information Technology of the People's Republic of China
Level / Type
National · Recommended
Issue date
May 8, 2018
Implementation date
September 1, 2018
Scope
QB/T 2922-2018 (Case and bag - Test method for shaking impact) is available as an English-translated PDF.
QB/T 2922-2018 — This Standard specifies the principle, devices and test methods for shaking impact test of case and bag. This Standard is applicable to various daily cases and bags.
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Document preview — QB/T 2922-2018
National Standard of the People's Republic of China
- ICS
- 59.140.35
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
Contents
- Foreword...3
- 1 Scope...4
- 2 Principle...4
- 3 Devices and materials...4
- 4 Sample preparation...6
- 5 Test methods...6
- 6 Results representation...7
- 7 Test report...7
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard is a revision to QB/T 2922-2007 "Case and bag - Test method
for fall down".
Compared with QB/T 2922-2007, in addition to editorial modifications, the main
technical changes are as follows.
- modified the requirements for "impact device";
- added the requirements for "fixture";
- added the requirements for "suction cup noise reducer";
- modified the requirements for "control device";
- deleted the requirements for "specified load";
- added "normative Annex A".
This Standard was proposed by China Light Industry Federation.
This Standard shall be under the jurisdiction of National Technical Committee
on Leather Industry of Standardization Administration of China (SAC/TC 252).
Main drafting organizations of this Standard. Dongguan Hengyu Instrument Co.,
Ltd., National Leather Products Quality Supervision and Inspection Center
(Guangzhou), Yangyi Testing Technology Co., Ltd., New Belle Shoes
(Shenzhen) Co., Ltd., Fujian Baolande Luggage Leather Co., Ltd., Guangdong
Xiangchen Boxing Technology Co., Ltd., China Leather and Footwear Industry
Research Institute, Guangzhou Quality Supervision and Inspection Institute,
Guangzhou Shangyi Clothing Co., Ltd., Nike Sporting Goods Co., Ltd.
Main drafters of this Standard. Chen Zongliang, Zan Zhiyi, Sun Shizhen, Zhao
Liguo, Liu Long, Huang Yongqin, Deng Chengliang, Chen Lijian, Wang Yong.
Since the implementation of this Standard, it shall replace the former light
industry standard QB/T 2922-2007 "Case and bag - Test method for fall down",
QB/T 2922-2007 is repealed simultaneously.
Version of standard substituted by this Standard is.
- QB/T 2922-2007.
Case and bag - Test method for shaking impact
1 Scope
This Standard specifies the principle, devices and test methods for shaking
impact test of case and bag.
This Standard is applicable to various daily cases and bags.
2 Principle
Apply the specified load in the case and bag. Lift the case and bag to the
specified stroke by lifting the strap, strap (or fully open lever). Perform free fall
application under gravity (the rod test uses uniform motion). Through the impact
and absorption of the impact force by the spring, make the case and bag be
shacked and impacted. Thereby check the anti-shaking impact performance of
the handle, the strap, the tie rod and the case (bag) body.
3 Devices and materials
3.1 Shock impact tester
The case and bag shaking impact tester shall include the components specified
in 3.1.1 to 3.1.7.See Annex A for the structure of the main components.
3.1.1 Impact device
See Figure A.1 in Annex A for a schematic diagram. The impact device includes
a lower suction cup, an upper damping rubber block, a shock absorbing spring,
a lower shock absorbing rubber block, an impact rod, and a common clamp
(shoulder strap clamp).
3.1.3 Damping spring
See Figure A.3 in Annex A for a schematic diagram. The spring constant is
(17.54±0.88) N/mm. The spring section is rectangular (8.5mm × 4.2mm), length
of (165±5) mm, outer diameter of (44.5±0.5) mm, inner diameter of (28.0±0.5)
mm, total number of turns of (17±0.5).
3.1.4 Impact rod
See Figure A.4 in Annex A for a schematic diagram. Dimensions shall comply
with the requirements of Figure A.4 of Annex A.
3.1.5 Damping block
A cylindrical damping rubber block is mounted at each end of the damping
spring. See Figure A.5 in Annex A for a schematic diagram.
3.1.6 Fixture
Including common fixtures and shoulder strap clamps, see Figure A.6, Figure
A.7 in Annex A. Double shoulder strap clamps can be installed in common
fixtures. The inside of common clamps shall be lined with soft film to avoid wear
samples.
3.1.7 Control device
It can adjust the shacking impact rate, can set and record the number of impact
tests, and has the function of automatic drop stop when the sample falls.
4 Sample preparation
The sample is placed at a temperature of 16°C ~ 30°C for not less than 2h. The
sample shall be tested at this ambient temperature. The sample shall not be
pressurized during parking.
5 Test methods
5.1 Apply the specified load into the sample case, the inside of the bag.
Distribute the load evenly.
5.3 Select test modes.
5.4 The test frequency is preferentially set to (20±2) times/min, or tested
according to the specified test frequency.
5.5 Select the following number of shaking impact to test. 100 times, 200 times,
300 times, 500 times, 1,000 times, etc., or test according to the specified
number of times.
5.6 After the test, check the handle (side handle), whether the tie rod is
detached or damaged, whether the metal fitting is damaged, whether the thread
is broken or not, whether the thread is broken or not, whether the case
(including body) is deformed or damaged, or other defects affecting appearance
and function.
6 Results representation
The results are expressed in terms of the number of shaking and the apparent
quality of the product after the test.
7 Test report
The test report shall include the following information.
QB/T 2922-2018
QB
LIGHT INDUSTRY STANDARD OF
THE PEOPLE'S REPUBLIC OF CHINA
ICS 59.140.35
Classification No.. Y 48
Filing No.. 63694-2018
Replacing QB/T 2922-2007
Case and bag - Test method for shaking impact
Issued on. MAY 08, 2018
Implemented on. SEPTEMBER 01, 2018
Issued by. Ministry of Industry and Information Technology of the
People's Republic of China
Table of Contents
Foreword... 3
1 Scope... 4
2 Principle... 4
3 Devices and materials... 4
4 Sample preparation... 6
5 Test methods... 6
6 Results representation... 7
7 Test report... 7
Annex A (normative) Schematic diagram of main components of shaking impact
tester... 8
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard is a revision to QB/T 2922-2007 "Case and bag - Test method
for fall down".
Compared with QB/T 2922-2007, in addition to editorial modifications, the main
technical changes are as follows.
- modified the requirements for "impact device";
- added the requirements for "fixture";
- added the requirements for "suction cup noise reducer";
- modified the requirements for "control device";
- deleted the requirements for "specified load";
- added "normative Annex A".
This Standard was proposed by China Light Industry Federation.
This Standard shall be under the jurisdiction of National Technical Committee
on Leather Industry of Standardization Administration of China (SAC/TC 252).
Main drafting organizations of this Standard. Dongguan Hengyu Instrument Co.,
Ltd., National Leather Products Quality Supervision and Inspection Center
(Guangzhou), Yangyi Testing Technology Co., Ltd., New Belle Shoes
(Shenzhen) Co., Ltd., Fujian Baolande Luggage Leather Co., Ltd., Guangdong
Xiangchen Boxing Technology Co., Ltd., China Leather and Footwear Industry
Research Institute, Guangzhou Quality Supervision and Inspection Institute,
Guangzhou Shangyi Clothing Co., Ltd., Nike Sporting Goods Co., Ltd.
Main drafters of this Standard. Chen Zongliang, Zan Zhiyi, Sun Shizhen, Zhao
Liguo, Liu Long, Huang Yongqin, Deng Chengliang, Chen Lijian, Wang Yong.
Since the implementation of this Standard, it shall replace the former light
industry standard QB/T 2922-2007 "Case and bag - Test method for fall down",
QB/T 2922-2007 is repealed simultaneously.
Version of standard substituted by this Standard is.
- QB/T 2922-2007.
Case and bag - Test method for shaking impact
1 Scope
This Standard specifies the principle, devices and test methods for shaking
impact test of case and bag.
This Standard is applicable to various daily cases and bags.
2 Principle
Apply the specified load in the case and bag. Lift the case and bag to the
specified stroke by lifting the strap, strap (or fully open lever). Perform free fall
application under gravity (the rod test uses uniform motion). Through the impact
and absorption of the impact force by the spring, make the case and bag be
shacked and impacted. Thereby check the anti-shaking impact performance of
the handle, the strap, the tie rod and the case (bag) body.
3 Devices and materials
3.1 Shock impact tester
The case and bag shaking impact tester shall include the components specified
in 3.1.1 to 3.1.7.See Annex A for the structure of the main components.
3.1.1 Impact device
See Figure A.1 in Annex A for a schematic diagram. The impact device includes
a lower suction cup, an upper damping rubber block, a shock absorbing spring,
a lower shock absorbing rubber block, an impact rod, and a common clamp
(shoulder strap clamp).
3.1.3 Damping spring
See Figure A.3 in Annex A for a schematic diagram. The spring constant is
(17.54±0.88) N/mm. The spring section is rectangular (8.5mm × 4.2mm), length
of (165±5) mm, outer diameter of (44.5±0.5) mm, inner diameter of (28.0±0.5)
mm, total number of turns of (17±0.5).
3.1.4 Impact rod
See Figure A.4 in Annex A for a schematic diagram. Dimensions shall comply
with the requirements of Figure A.4 of Annex A.
3.1.5 Damping block
A cylindrical damping rubber block is mounted at each end of the damping
spring. See Figure A.5 in Annex A for a schematic diagram.
3.1.6 Fixture
Including common fixtures and shoulder strap clamps, see Figure A.6, Figure
A.7 in Annex A. Double shoulder strap clamps can be installed in common
fixtures. The inside of common clamps shall be lined with soft film to avoid wear
samples.
3.1.7 Control device
It can adjust the shacking impact rate, can set and record the number of impact
tests, and has the function of automatic drop stop when the sample falls.
4 Sample preparation
The sample is placed at a temperature of 16°C ~ 30°C for not less than 2h. The
sample shall be tested at this ambient temperature. The sample shall not be
pressurized during parking.
5 Test methods
5.1 Apply the specified load into the sample case, the inside of the bag.
Distribute the load evenly.
5.3 Select test modes.
5.4 The test frequency is preferentially set to (20±2) times/min, or tested
according to the specified test frequency.
5.5 Select the following number of shaking impact to test. 100 times, 200 times,
300 times, 500 times, 1,000 times, etc., or test according to the specified
number of times.
5.6 After the test, check the handle (side handle), whether the tie rod is
detached or damaged, whether the metal fitting is damaged, whether the thread
is broken or not, whether the thread is broken or not, whether the case
(including body) is deformed or damaged, or other defects affecting appearance
and function.
6 Results representation
The results are expressed in terms of the number of shaking and the apparent
quality of the product after the test.
7 Test report
The test report shall include the following information.
......
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 7 pages — is available in the English PDF.
Referenced standards
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