GB 28265-2012 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB 28265-2012 | English | 85 |
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Safeguard Specification of Amusement Rides
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GB 28265-2012: Safeguard Specification of Amusement Rides---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB28265-2012
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 97.200.40
Y 57
Safeguard Specification of Amusement Rides
Issued on. MAY 11, 2012
Implemented on. MARCH 1, 2013
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and definitions... 5
4 Technical Requirements... 6
5 Test methods... 9
6 Sampling principles... 13
Foreword
Clauses 4.1.1, 4.4.4, 4.4.5, 4.5 of this Standard are mandatory, the rest are
recommended.
This Standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard shall be under the jurisdiction of National Standardization Technical
Committee of Ropeway and Amusement Rides (SAC/TC 250).
Drafting organization of this Standard. Chinese Special Equipment Inspection and
Research Institute.
Chief drafting staffs of this Standard. Xiao Yuan, Ma Wenfei, Zheng Zhitao, Fu
Hengsheng, E Lijun, Pang Ang.
Safeguard Specifications of Amusement Rides
1 Scope
This Standard specifies the technical requirements, test methods and sampling
principles of safeguard of amusement rides.
This Standard is applicable to safeguard devices such as over-speed limit devices,
limit devices, emergency brake devices, anti-kickback device, safety belts, safety
pressure bar and cushioning devices of amusement rides.
2 Normative references
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this Standard.
GB/T 2423.1 Environmental testing for electric and electronic products - Part 1.
Test methods - Test A. Hypothermia
GB/T 2423.2 Environmental testing for electric and electronic products - Part 2.
Test methods - Test B. Mega-thermal
GB/T 2423.3 Environmental testing for electric and electronic products - Part 3.
Test methods - Test Cab. Damp heat test
GB/T 2423.37 Environmental testing for electric and electronic products - Part 37.
Test methods - Test L. Dust Test
GB/T 2423.38 Environmental testing for electric and electronic products - Part
38.Test methods - Test R. Water test method and guidance
GB 4208 Enclosure protection class (IP code)
GB 5226.1 Electrical safety of machinery - Electrical equipment - Part 1.General
requirements
3 Terms and definitions
The following terms and definitions are applicable to this document.
3.1 Safeguard
In safety functions, the guards or protection devices that protect people from existing
harm or imminent harm.
3.2 Electric devices
The devices that achieve specified safety functions through coordinating mechanical
devices, electronics and electrical components.
3.3 Mechanical devices
The devices that achieve specified safety functions through mechanical devices.
3.4 Fault
The status of a characteristic that can not perform a specified function.
3.5 Trigger threshold
The physical quantity to trigger the safeguard.
3.6 Display error
The value difference between measurement value and safeguard’s display value.
3.7 Action error
When safeguard triggers, the value difference between its actual physical quantity and
trigger threshold.
4 Technical Requirements
4.1 Basic Functions
4.1.1 The safeguard shall be applicable to amusement rides’ condition requirements;
when the physical quantities which act on safeguard are reaching to its trigger
threshold, the safeguard shall act as required.
4.2 Alarm function
4.2.1 The safeguard shall be equipped with automatic alarm function; when it fails, it
shall be able to alert sound or light alarm signal.
4.2.2 The alarm signal shall be triggered by safeguard’s action; the sound alarm
signal shall has apparent difference with amusement rides’ environmental noise. The
alarm sound shall pass the tests specified by 5.14; all sound level shall not be lower
than 75dB (A). The light alarm signal shall use red color; it shall be clearly visible within
the range of the operating personnel.
4.3 Safety requirements of mechanical devices
The mechanical devices shall meet the requirements of 7.4 ~ 7.7 in GB 8408-2008, in
which, the axis, the pin and the important welds that relate directly to personal safety,
shall pass the test specified by 5.2.1 and 6.3.
4.4 Safety and environmental suitability requirements of electric devices
4.4.1 The electric devices shall meet the requirements specified by GB 5226.1; and
the safeguard, which uses programmable devices, shall also meet the requirements
specified by GB/T 20438.2.
4.5 Error determination of safeguard
4.5.1 For safeguard with display function, in laboratory condition, with respect to the
action values, the display error shall not exceed ± 3%; when using whole amusement
rides to conduct the test, it shall not exceed ± 5%.
4.5.2 When testing under the laboratory condition, the action error of electric devices
shall not exceed ± 3%; the action error of mechanical devices shall not exceed ± 5%.
4.6 Flexible restraining devices
4.6.1 The safety belt (containing components such as lock) shall meet the
requirements in 7.6.7 of GB 8408-2008, and shall pass the test specified by 5.2.3.
4.6.2 The elastic ropes which protect personal safety directly, shall specify the
restriction of the breaking force, usage count and failure time; the elastic ropes for
bungee shall meet the requirements specified in Part 4 of GB/T 20051-2006 at the
same time, and shall be able to pass the tests specified by 5.2.4 and 5.3.3.
4.9 Emergency brake
The emergency brake shall be able to act quickly under emergency situations to
prevent amusement rides running to dangerous direction; it shall be adjustable, and
shall be able to pass the test specified by 5.4 and 5.5.
4.10 Cushioning devices
The cushioning devices shall be able to act quickly, under emergency situations, to
prevent amusement rides running to dangerous direction, and shall be able to pass
the test specified by 5.4.
5 Test methods
5.1 General specifications
5.1.1 The tests shall be carried out in the laboratory conditions; it shall meet the
relevant regulations and standards. For safeguard which can not be tested
independently, use the whole amusement rides to conduct the field test.
5.2 Tensile strength test
5.2.1 Test Methods for tensile strength
Simulate actual working conditions; use test machine, at action point of force, to apply
rated tensile onto the specimen to conduct the test.
5.2.4 Tensile strength test for elastic rope
Simulate the actual working conditions; use testing machine, under 100mm/min ~
500mm/min tensile speed, apply loading at action point of force; stretch elastic rope
specimens to 2.5 times and 4 times of their original length respectively. WHEN the
specimen is stretched to 2.5 times of the length, its tensile load is greater than the
design load, AND WHEN it is stretched to 4 times of the length, the corresponding
tensile load is less than the maximum dynamic load design, THEN it is judged as
qualified.
5.3 Fatigue strength test
5.3.1 Fatigue test method
Simulate the actual working conditions; use fatigue test machine to apply rated load
repeatedly at action point of force of specimen.
5.4 Impact strength test
Simulate actual working conditions; use test machine or whole amusement rides to
conduct field test; conduct impact test by applying rated load at action point of force.
Repeat the test for 1000 times; after the completion of test, if safeguard does not fail,
then it is judged as qualified.
5.7 Limit devices test
Simulate the limit critical conditions; use test machine or whole amusement rides to
conduct field test; the limit device shall be able to achieve safety functions on time;
repeat the test for 1000 times; after the test is completed, if limit device device does
not fail, then it is judged as qualified.
5.8 Action error test
Simulate amusement rides’ actual working conditions; use test machine or whole
amusement rides to conduct field test; set the trigger threshold of safeguard; for each
trigger threshold, apply the actual physical quantity that is required to trigger the
safeguard, so as to trigger the safeguard.
5.9 Environmental test for electric device
5.9.1 Vibration Test
According to the conditions specified in Table 1, conduct the test. During the test, the
safeguard is not in energized state.
5.9.3 Protection level test
The test methods and conformity assessment shall meet the corresponding
requirements specified by GB/T 2423.37 and GB/T 2423.38.During the test, the
safeguard is not in energized state. After this test, conduct the test specified in 5.8.
5.9.4 Temperature Test
5.9.4.1 The high temperature test methods is in accordance with the specification of
GB/T 2423.2.During the test, the safeguard is not in energized state. Test temperature
is 60°C, last for 16 h. After the recovery, complete test specified in 5.8 within 30 min.
5.10 Voltage fluctuation test
When it is under the AC power supply, apply 110% of rated voltage for 60 min AND 85%
of rated voltage for 10 min, respectively; when it is under the battery power supply,
apply 135% of rated voltage for 60 min AND 85% of rated voltage 10 min, respectively.
In the later stage of the test, conduct the test according to 5.8.
5.11 Power immunity test
On the power supply of electric device, superimpose a spike voltage that has the
following parameters.
5.12 Insulation resistance test
Measure the insulation resistance between power inlet of safeguard and metal part of
enclosure. The test method is according to GB 50150-2006; if the insulation resistance
value is not less than 1.0MΩ, then it is judged as qualified.
5.13 AC withstand voltage test
The test method is according to 23.0.2 in GB 50150-2006.Apply 1000V test voltage
between power inlet of safeguard and metal part of enclosure, the time is 1 min. If there
is no breakdown and flash-over at the test position, then it is judged as qualified.
6 Sampling principles
The test specimens shall be randomly selected from the products. When the number
of single-piece small batch products N < 10, the minimum number of samples is 1
piece; when the products batch number N > 10, the minimum number of samples are
shown in Table 4.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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