Some standard content:
IC5 13. 220. 01
Public security industry standard of the People's Republic of China GA 413—2003
Descent rescue device
Issued on 2003-01-29
Issued by the Ministry of Public Security of the People's Republic of China
Implementation on 2003-07-01
GA 413—2003
4.2, 4.3, 4.4, 4.5.1, 4.5.3, 4.5.4, 4.5.5, 4.6, 4.7, 4.8 and 4.9 of this standard are mandatory provisions and the base entry is a recommended provision.
This standard is formulated based on the application requirements of life-saving descenders and the production and technical level of domestic life-saving descenders, and is based on the Japanese standard "Technical Standards for Descending Machines Regulations No. 2 of the Ministry of Public Security (1997)" and the provisions of relevant domestic standards. This standard is proposed by the Ministry of Public Security Fire Department.
This standard was issued by the Fourth Technical Committee of the Fire Standardization Technical Committee. The drafting unit of this standard is the Shanghai Fire Science Research Institute of the Ministry of Public Security. The main drafters of this standard are: Li Baochu, Chen Keping, Ma Weiguang, Li Zhong, Han Yin, Sun Shangdong 1 Scope
Life-saving descenders
GA 413—2003bzxz.net
This standard specifies the model, technical requirements, screening, inspection and acceptance marking, packaging, transportation and other requirements of particle descent devices (hereinafter referred to as descent devices).
This standard applies to descent devices that can safely descend to the ground at a certain speed by relying on their own weight from a certain height and can reciprocate. 2 Normative references
The clauses in the following documents shall apply to the clauses of this standard. This is a dated document, and all subsequent amendments (excluding errors or revisions) are not applicable to this standard. Standards, however, are encouraged to study whether the latest versions of these documents can be used according to the agreement reached on this standard. For any referenced document without a date, the latest version shall apply to this standard. GB/T1912000 Packaging and storage pictorial marking GB/T89181S96 Wire rope GB/T10125-157 Artificial gas effect test salt test YB/T5197-1S93 Wire fly for aviation 3 Model 3 Splitting device Product model Classification code, characteristic code and main parameters The form of the assembly is as follows: ISH
(rope length, marked with Arabic numerals, unit: m) characteristic code (maximum, minimum allowable mass, unit: kg) American assembly code (life-saving descender)
Standard example:
The maximum allowable mass is 100kR, the minimum allowable mass is 35kg, and the grade of descender with a strength of 30 is JSH100/3530.
4 Technical requirements
4.1 Appearance quality
The designed descender should have a safety structure and safety features. The outer surface of the parts, such as speed regulator, metal connector and reel, should be smooth, polished, scratch-free, rough and rust-free. The ends of the rope should be wrapped with protective materials. All parts should be connected properly without deformation, damage and other common phenomena.
4.2 Dimensions and material requirements of main parts
4.2.1 Shrinkage
4.2.1.1 Wire rope
The outer surface of the wire rope should be free of abrasion, and the length should not be too small. The quality should meet the requirements of GB/T8918193S. GA 413—2003
4. 2. 1.2 Core rope
a) The rope core is made of aviation steel wire, and the material should meet the requirements of YB/T519719S3. b) The outer material is cotton, composite or fiber material. The structure should be tight and evenly made without twisting. 4.2.2 Safety belts Safety belts are made of cotton fiber. Belt length 5mm x 2mm. Belt length 1001-100mm. There should be a ring that can adjust the length according to the user's chest size. 4.2.3 Safety belts Metal safety belts should have safety bones. 4.2.4 Rope reels Rope reels are made of plastic, rubber and other non-metal materials. 4.3 Strength
4.3.1 When the rope is in use, a corresponding tensile load is applied to it. During the test, there should be no obvious deformation, damage, or detachment.
4. 3. 2 Safety Strength
When the safety belt is stretched, a tensile load is applied to it. During the test, no breakage or other abnormal phenomena shall occur. 4.3.3 Safety Temperature
When the safety hook is in use, a tensile load is applied to it. During the test, the safety hook and the safety device shall not be deformed, broken, or detached.
4. 3. 4 Safety Strength
When the rope is in normal use, a tensile load is applied to it. During the test, no obvious deformation or rupture shall occur. The outer layer and the core shall not be detached.
4.4 Safety belt buckle performance
Apply tensile load to the ball in the extension direction of the safety belt. No slippage shall occur during the test. 4.5 Descent speed
4.5.1 Different descent speeds
Based on the test speed, add the minimum load, standard load and maximum load specified in Table 1 to it. Carry out two descent speed tests for each. The descent speed of the weight gainer should be between 0.16m/s and 1.3m/s. Table 1
Page Release Type
Minimum Aircraft Load
Standard Required Load
Maximum Human Load
4.5.2 Main Branch Descent Acceleration
Actual Value
B3R±F
2081±5
When the wing descender is tested for repeated descent speed, the deviation of each descent speed from the average value of the 20 repeated descent speeds shall not exceed 120%.
4.5.3 Descent Speed after Bubble
After the descent device rope is finally depleted of bubble, the descent speed test shall be carried out, and the descent accuracy shall be between 0.1m/s--1.5m/s. The steel average distance rope buffer can be tested as long as the steel wire rope is soaked. 4.5.4 Descent speed after low temperature treatment
After the low temperature treatment, the descending speed of the descending device shall be between 0.16m/g-1.5m/g, except for the steel wire descending device.
4.5.5 Descent speed after high temperature treatment
CA413—2003
After the high temperature treatment, the descending speed of the descending device shall be between 0.16m/a=1.hm/a. Except for the descenders in some cases,
4.6 Anti-fall performance
After the speed test of the descender, there should be no abnormal phenomena such as mechanical attraction, and then the descent test is carried out: the descent speed is generally between 0.16m/s---=.5m/s,
4. Anti-impact performance
After the impact test, the speed governor, safety hook, safety belt, bolt, and cable should have no obvious deformation and slight damage, and then the descent speed test is carried out. The descent angle is generally between U15m/s--1.5n/s. 4.8 Reliability After the reliability test, the descending speed test is carried out. The descending speed should be between 3.15m/s and 1.5m/s. During the test, the safety hook is tightened and the rope is not damaged. 4.9 Corrosion test is required. The other parts should not have obvious short circuit. After the descending speed test, the descending speed should be between 0.16m/s and 1.5m/s. 5.1 Test conditions 5.1.1 The test accuracy of the particle force machine used in the standard test shall be 1.1m/s. 5.1.2 The descending speed test of this standard shall be carried out under the condition of wind speed of 2m/s. 5.1.3 The descent speed test of this standard shall be carried out at a test height of 15m1C.5m. 5.2 Appearance inspection
The appearance of the leveler shall be inspected by visual inspection, and the result shall comply with the provisions of 4.1. 5.3 Dimension inspection of main components
5.3.1 Dimension inspection of rope
Use a universal measuring tool to measure the rope diameter at full length, measure any point, and take the arithmetic mean of the three points. The result shall comply with the provisions of 4.2.1. 5.3.2 Safety belt dimension inspection
Use a universal measuring tool to measure the length, width and thickness of the safety belt, measure any three points, and take the arithmetic mean of the three points. The result shall comply with the provisions of 4.2.2,
5.4.1.4 Test of the strength of the whole machine
The two ends of the safety belt rope are connected by a card push to form a ring. The test pull is respectively connected to the lifting lug of the safety belt and the rope ring, and connected to the upper and lower tools of the tensile machine, as shown in Figure 1. The tensile speed of the tensile machine is set at 100nn/trin, and then the tensile load of .5.5×4 is applied to the safety belt, and it is maintained for 5min. The result should meet the requirements of 4.3.-5.5.5.5.5.5.6.6.7.8.8.9.1.1.2.3.4.4.5.6.7.8.9.1.3.4.5.7.8.1.4.5.7.8.1.5.5.7.8.1.4 ...8.1.4.5.7.8.8.8.8.8 5.6 Safety structure strength test
The two ends of the safety seal are connected to the upper and lower tools of the tensile machine respectively: the tensile speed of the tensile machine is set at 50mm/min, and then a tensile load of 1000GN is applied to the safety seal for 5min. The result should meet the requirements of 4.3.3. 5.7 Rope density strength test
The rope sample is 300mm long and connected to the upper and lower tools of the tensile machine at both ends. The tensile speed of the tensile machine is set at 5mm/min. Then the sample is subjected to the tensile load of the maximum load × 4 and maintained for 5min. The tool should meet the requirements of 4.3.4. 3
GA 413—2003
5.8 Safety belt buckle clamping test
The two ends of the safety belt are tightened by the upper and lower tools of the tensile machine, as shown in Figure 2. Set the tensile machine to a tension of m/min, then apply a tensile load of 6.5 times the recommended load to the safety belt and keep it for 5 min. The result shall comply with the provisions of 4.4. 1.5—Tension:
One set of rings.
Safety belt:
One buckle is broken,
5.9 Drop speed test
Put the descender on a fixed point at a height of 15m ± D.5m from the cylinder. Apply a load of the specified type at the lower end of the descender according to the provisions of 1, and let it descend to the surface. Use a stopwatch to measure its descent time, take the arithmetic mean, and calculate the descent recovery formula (). The result shall comply with 1.5.1 The following is the result:
Where:
Downward speed, unit is meter/second (m/s);
Test height, unit is milliliter;
Descent time, unit is sand ().
5.10 Left-right descending reverse test
Step 5S force method, apply standard mass load to the descending end of the descending device rope: make it descend to the pool surface. Perform 20 descending steps: the result should meet the requirements of 4.5.2.
5.11 Descent avoidance test after water flooding test G. 413—2003
After the descending device has been placed in clean water for 1 hour, add a standard load to the descending end of the descending device according to the method of 9, and let it descend to the ground. Carry out two descent tests in succession and complete them within 5 minutes. The results should comply with the provisions of 4.5.3. 5.12 For the descending speed test, the descending device after low temperature treatment should be placed in a temperature test box at 35±2℃ for 1 minute, then connected to the direction of =.9, and apply a standard load to the descending end of the descending device to let it descend to the pool surface. Carry out two descent tests in succession and complete them within 5 minutes. The results should comply with the provisions of 4.5.4. 5.13 For the descending speed test, the descending device after high temperature treatment should be placed in a high temperature test box at 50±12℃ for 1 minute. After 4 hours, according to the method of 5.9, add a standard load to the descending rope to make it fall to the ground. Perform 3 consecutive descent tests and complete them within 10 minutes. The results should meet the requirements of 4.5.5. 5.14 Anti-fall performance test
Put the speed regulator of the descender in a horizontal state. Then, from the 1.5 degree of cement ground (calculated from the lower plane of the regulator) from the bottom to the cement ground (the cement ground is a 10cm thick 3C grade valve energy condensation plate or base), and perform 5 consecutive times: Then, according to the method of 5., apply a standard load to the descending end of the descending rope of the descender to make it fall to the ground. Perform 2 consecutive descent tests. The results should meet the requirements of 4.6
5. 15 Impact resistance test
Pull out a rope of 100 m in length at the descent end of the rappelling device, and apply the maximum load on the safety belt. Then, raise the load by 1 m and let it fall freely. Repeat this method twice. Then, according to the method in 3.9, add a standard load to the descent end of the rappelling device rope and let it fall to the ground. Carry out two descent tests in a row, and the result shall comply with the provisions of 4.7. 5.16 Scalability test
According to the method in 5.9, add the maximum load to the descent end of the rappelling device rope and let it fall to the ground. Carry out 1CC descent test in reverse order. When the total length exceeds 15m, the number of tests shall be calculated by dividing the actual length of the rope by 15 and then multiplying by 100 (round off if it is not an integer, and then multiply by 10 if it is not an integer).9, add a standard load to the lower end of the rappelling device rope and make it descend to the ground. Carry out two descent tests in succession, and the results shall comply with the provisions of 4.7. 5.16 Scalability test
According to the method of 5.9, add the maximum load to the lower end of the rappelling device rope and make it descend to the ground. Carry out 1CC descent test in reverse order. When the length of the rope exceeds 15m, the number of tests shall be calculated by dividing the actual length of the rope by 15 and then multiplying by 100 (if it is not an integer, it shall be rounded up to the nearest integer, and then rounded up to 10).9, add a standard load to the lower end of the rappelling device rope and make it descend to the ground. Carry out two descent tests in succession, and the results shall comply with the provisions of 4.7. 5.16 Scalability test
According to the method of 5.9, add the maximum load to the lower end of the rappelling device rope and make it descend to the ground. Carry out 1CC descent test in reverse order. When the length of the rope exceeds 15m, the number of tests shall be calculated by dividing the actual length of the rope by 15 and then multiplying by 100 (if it is not an integer, it shall be rounded up to the nearest integer, and then rounded up to 10).
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