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GB 28265-2012 English PDF (GB28265-2012)

GB 28265-2012 English PDF (GB28265-2012)

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GB 28265-2012: [GB/T 28265-2012] Safeguard specifications of amusement rides
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.
GB 28265-2012
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
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
GB 8408-2008 Amusement rides safety specifications
GB 14166-2003 Vehicle safety belt and restraint system for occupant adult GB/T 20051-2006 Technical specifications of no power class amusement rides GB/T 20438 Function safety of electrical / electronic / programmable electronic safety-related systems – Part 2. Requirements of electrical / electronic / programmable electronic safety-related systems
GB 50150-2006 Electrical installations and electrical devices handover test standard
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.
3.8 Dangerous directions
When amusement rides are running and reaching to safeguards’ trigger conditions, the amusement rides or the safeguards are not running to expected direction. Display error = (Display value - Measured value) / Found × 100% ... (1) 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%. When using whole amusement rides to conduct the test, the action error of electric devices shall not exceed ± 6%, the action error of mechanical devices shall not exceed ± 10%.
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. 4.7 Safety pressure bar
The safety pressure bar shall meet the requirements in 7.6.8 specified by GB 8408- 2008, and shall be able to pass the test specified by 5.2.2 and 5.3.2.
4.8 Anti-kickback devices
The anti-kickback devices shall be able to act quickly under emergency situations to prevent amusement rides from running to dangerous direction; it shall meet the requirements in 7.4 of GB 8408-2008; and it shall be able to pass the test specified by 5.4.
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.
4.11 Over-speed limiting devices
The over-speed limiting devices shall be able to act quickly, under emergency situations, to prevent amusement rides from running to dangerous direction, and shall be able to pass the test specified by 5.6.
P -- the load that is born by specimen in normal operation, Newtons (N); k -- load coefficient, k = 2.
5.2.3 Tensile strength test for safety belt
According to the method specified in 5.4 and 5.5 of GB 14166-2003, conduct the strength tensile test for safety belt; if the tensile breaking strength of safety belt is not less than 6×103N, then it is judged as qualified.
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.
5.3.2 Fatigue test for safety pressure bar
Use test machine to apply rated load at action point of force; test for 6 × 104 times. After testing, if the safety pressure bar does not fail, then it is judged as qualified. 5.3.3 Fatigue test for elastic rope
The fatigue test for elastic rope shall meet following conditions.
a) Attach elastic rope specimen to test machine; stretch for 50 times; after the specimen is confirmed without abnormality, conduct fatigue test;
b) Set stretching times to 1000; conduct equal-amplitude tensile fatigue test; if the maximum of force-decreasing amplitude of elastic rope is not greater than 20%, then it is judged as qualified.
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.
safeguard is not in energized state.
Table 2 Impact acceleration test requirements (half sine wave)
After the impact test, the components shall not be loose, fall-off or damages; the wires shall not be disconnected. After the test, conduct the test specified in 5.8. 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. 5.9.4.2 The low temperature test methods are in accordance with the specification of GB/T 2423.1. During the test, the safeguard is not in energized state. Test temperature is -15°C, last for 16 h. After the recovery, complete test specified in 5.8 within 30 min. 5.9.5 Steady damp-heat test of devices
Before the test, the safeguard shall pass the test in 5.12 and 5.13. The test method are according to the specifications of GB/T 2423.3; test time is 48 h. After the recovery, conduct the t...
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