GB 21976.2-2012Escape apparatus for building fire - Part 2: Automatic and repetitive rescue controlled descent device (English PDF)

4.2.1 Ropes

4.2.1.1 Wire Rope Aviation should be used with wire rope diameter shall be not less than 3mm, the material shall comply with the YB/T 5197 requirements of.

4.2.1.2 cored rope Cord rope aviation should be used in diameter not less than 3mm, the material shall comply with the YB/T 5197 requirements of. Outer material should be cotton Yarn or synthetic material. Whole rope should be consistent with the structure, tightly woven, uniform thickness, no distortions.

4.2.2 belt Seat belt material should be cotton or synthetic material. Bandwidth 40 mm ~ 80 mm, with a thickness of 1 mm ~ 3 mm, with a long 1000mm ~ 1800mm, and the length can be adjusted with a buckle by user bust size.

4.2.3 safety hook Safety hook should be made of a metal material and a safety device to prevent misuse of open, reliable safety device should be locked.

4.2.4 rope reel Rope reel by rubber, plastic and other non-metallic material, and no sharp edges and protrusions.

4.3 Strength

4.3.1 strength machine Ease down after strength testing machine, rope, governor and other components should force no significant deformation, breakage, detachment and other anomalies.

4.3.2 belt and metal fittings strength Belts and metal connectors after strength test, the seat belt webbing, buckles and metal fittings shall cause rupture phenomenon.

4.3.3 Safety hook intensity After the safety hook by strength testing, body and safety hook safety device shall not obvious deformation, fracture, loss and other anomalies.

4.3.4 rope strength After the rope strength testing without obvious deformation, breakage, cored rope may not happen with the cord from the outer phenomena.

4.4 The rate of decline

4.4.1 Different load rate of decline Minimum load specified in Table 1, the standard load and maximum load state, slow down the rate of decline should be 0.16m/s ~ 1.5m/s.

4.4.2 repetition rate of decline In the standard load conditions, the rate of decline slow down each time with respect to the rate of decline was repeated 20 times the average deviation should not exceed ± 20%.

4.4.3 lowering speed rope after soaking Ease down rope soaked in water after a standard test load rate of decline, the rate of decline should be 0.16m/s ~ 1.5m/s. Table 1 in units of Newton Load the type of load value The minimum load of 343 ±

5.1 Test conditions Conditions

5.1.1 The test shall be the rate of decline wind speed of not more than 2m/s is the next.

5.1.2 When the slow descent rope sample length is less than 15m, height drop test speed test is the length of the rope; the rope when the sample When the length is not less than 15m, height drop test speed test is 15m.

5.2 appearance quality inspection By visual method to ease down for visual quality inspection.

5.3 The main parts of the structure, size and material inspection

5.3.1 ropes By visual inspection reports and viewing the material against the ropes methods of structure and materials to be checked. Then direct measurements with a universal measuring rope Diameter, measured at any of three points, the arithmetic mean of three points.

5.3.2 belt By visual inspection reports and viewing materials approach to belt structure and materials to be checked. Then general gauge measuring safety With length, width and thickness, measure any three points, the arithmetic mean of three points.

5.3.3 safety hook By visual inspection reports and viewing material on the structure of the method, materials and safety hook safety device to be checked.

5.3.4 rope reel By visual inspection reports and viewing the material approach to rope reel structure and materials to be checked.

5.4 Strength Test

5.4.1 strength test machine The slow descent rope with clamps connected, the system sets the ring, test hooks were set at ease down rope suspension lug and the collar on, and and Rally connected to the upper and lower jig, as shown in FIG. The Rally stretching speed is set at 100mm/min, and then applied for relief to drop four times the Tensile load large load, keeping 5min. Explanation. 1,5

--- ease down; 3

1 a schematic diagram of the whole strength test

5.4.2 strength test belts and metal fittings The end of the seat belt and the metal connectors are clamping Rally jig up and down. Rally stretching speed is set at 100mm/min, and then applying a tensile load of

6.5 times the maximum load on the specimen and keep 5min.

5.4.3 safety hook strength test The ends of the hook and the longitudinal direction, respectively, the upper and lower jigs Rally connected safety device is in the locked state, pulling machine tensile speed transfer Set at 30mm/min, and then applying a tensile load 10000N on the hook to keep 5min.

5.4.4 rope strength test The length of the rope specimen shall be not less than 300mm, and will be connected to both ends of the upper and lower jigs Rally, Rally stretching speed is set at 100mm/min, and a tensile load is applied 4 times the maximum load on the specimen and keep 5min.

5.5 Lowering speed test

5.5.1 Different load lowering speed test The slow descent in the test suspension height, fall in slow descent rope-end load is applied to the various provisions in Table 1, it fell to the ground. Each negative Were contained continuously decreased twice test, drop test with ease down the speed fall time measurement apparatus according to the equation (1) to calculate the rate of decline. v = Ht (1) Where. v

--- lowering speed in meters per second (m/s); H

--- test height in meters (m); t

--- fall time in seconds (s).

5.5.2 repeated lowering speed test The method according to 5.5.1, the slow descent rappel end load is applied to the standard, it fell to the ground, drop test was repeated 20 times, count Each count rate of decline and the rate of decline was repeated 20 times the average.

5.5.3 water soaked rope lowering speed test after The slow descent rope 1h, then press

5.5.1 method, slow descent rappel side with the standard load to drop To the ground. Drop test shall be carried out twice in a row, completed within 5min after the slow descent rope was removed from the clear water. Calculated for each rate of decline.

5.5.4 After the low temperature lowering speed test Slow descent at low temperature test chamber -30 °C ± 2 °C placed 4h, then press

5.5.1 method, slow descent rappel end applied Standard load, it fell to the ground. Drop test shall be carried out twice in a row, completed within 5min removed from the low-temperature chamber in slow descent. meter Each count rate of decline.

5.5.5 After the high temperature treatment of lowering speed test Slow down in the test chamber temperature 50 °C ± 2 °C placed 4h, then press

5.5.1 method, slow descent rappel side with the mark Quasi-load, it fell to the ground. Drop test shall be carried out twice in a row, completed within 5min removed from the high temperature chamber in slow descent. Compute Every time the rate of decline.

5.6 anti-drop performance test The slow descent in a horizontal state, and then dropped from the height of 1.50m ± 0.01m from the ground free to the concrete floor (concrete floor for the Thickness 10cm, strength grade C30 reinforced concrete slab or base), five times in a row. Then press

5.5.1 method, slow descent rope Cable declined end load is applied to the standard, it fell to the ground. Drop test shall be carried out twice in a row, each time calculated the rate of decline.

5.7 impact resistance test In the slow descent rappel side pulled 1m length of the rope, and the maximum load is applied to the seat belt, then move up the vertical load L 1m, and allowed to free fall, twice in a row. Then press

6.1 Type inspection

6.1.1 Type inspection requirements of this section shall be the inspection of all projects.

6.1.2 When one of the following conditions, type of inspection should be carried out.

a) identification of new products; B) after the official production, product structure, materials, production processes are greatly changed;

c) Product Discontinuance more than one year, the production recovery;

d) continuous production for three years;

e) the national quality supervision bodies type inspection requirements.

6.2 Factory inspection

6.2.1 Products shall plant quality inspection departments qualified along with the certificate, before the factory.

6.2.2 factory inspection of project-based portion 4.1,4.2,4.4.1 ~ 4.4.3. Among them, 4.1,

4.2 for the project must be inspected, 4.4.1 ~

4.4.3 Sampling for the project.

6.3 Sampling

6.3.1 Type inspection should be factory inspection of products at random five.

6.3.2 factory inspection to 100 as the number of samples sampling project should not be less than 10%; less than 100 when batch sampling projects Samples should not be less than three.

6.4 Determine the rules

6.4.1 Type inspection Results type inspection items all satisfy the requirements of this part, judged as qualified.

6.4.2 factory inspection The test results will be seized items should be fully comply with this part. When such failure occurs, the product should only be resubmitted after rework test. Test results are subject to a sampling program is not meet the requirements, then the product should be submitted to the full test, after passing Factory. 7 signs, packaging, transportation and storage

7.1.1 Each product shall be accompanied by a name plate, indicating the following.

a) Product name, model;

b) the implementation of the standard code;

c) Configuration height;

e) plant names, trademarks;

f) the date of production or serial number;

g) safety alerts (including "no oiling" word).

7.1.2 shall be marked on the package the following.

a) Product name, model;

b) production plant name, trademarks, site;

c) the date of production or serial number;

d) the number of products;

7.2 Packaging

7.2.1 Products should be stored in plastic bags with the whole package. In order to prevent friction and collision between parts, application of foam or cardboard barrier protection, external wood Box or carton packaging.

7.2.2 should be supplied with the package file.

a) product certification;

b) the product specification;

c) the packing list. Content

7.2.3 product specification shall comply with GB/T 9969, the product and the installation, use, safety precautions, maintenance Life cycle and make a statement.

7.3 Transport Product handling and transport during unloading can not throw, you should avoid contact with corrosive substances shall be subjected to oil and water contamination.

7.4 Storage Products should be stored indoors in a dry ventilated place, avoid direct sunlight, prohibition and grease, acids and corrosive materials mix.