GB 24543-2009Personal fall protection equipment -- Lanyards (English PDF)

3.1

In the seat belt is connected with the tether belt hanging point (tape, rope, etc.).

Note: The safety rope generally used in conjunction with the buffer, starting to expand or restrict the scope of activities of the wearer, mitigation of the impact energy.

3.2

Safety rope of adjustable length. […]

3.6

In the end use safety rope folding, stapling, weaving, and other ring or sheath is formed.

NOTE: end rings eye or metal can be loaded directly used for hanging.

4.1 Classification

4.1.1 safety rope around the pole into the job by job type limiting safety rope, rope safety zone, suspending fall safety rope.

4.1.2 divided into categories by material safety rope safety rope webbing, rope safety fiber rope, wire rope safety rope, safety rope chain.

4.2 Mark

Marked safety rope consists job category, two classes of materials portion.

--- job type. letter W represents a working safety rope around the pole, the letter Q represents the area limiting safety rope, the letter Z represents a fall Safety ropes hanging down;

--- material classes. letter Z represents a safety rope webbing, the letter X represents a safety rope fiber rope, wire rope letter G represents Safety rope, chain letter L stands for safety rope. Example: Wai lever operation, safety rope webbing denoted as "W-Z".

5.1 General requirements

5.1.1 Ribbon safety rope

5.1.1.1 should be high toughness, high strength materials such as fiber filaments.

5.1.1.2 ribbon should be locked sideline.

5.1.1.3 ribbon end should not be left loose wire.

5.1.1.4 end of the webbing to be creased, should not use rivets, gluing, heat sealing and other processes.

5.1.1.5 Webbing should end before hot treated Liao sewing, sewing Zhetou after hot processing should not be burn.

5.1.1.6 sewing end portion of the webbing to be sheathed, and the web material can not be used to produce a chemical reaction, should be as transparent as possible.

5.1.1.7 sewing thread should be used with the same webbing material web with the line color should be clearly distinguished.

5.1.1.8 webbing connecting terminal metal member, the ring should be inside the eye at the end of the suture material or a reinforcing layer of sheathing.

5.1.1.9 rope body construction and use of the process should not be knotted.

5.1.1.10 close welding, cutting, heat source and other places, to deal with safety rope insulate protection.

5.1.1.11 all components should be smooth, no material or manufacturing defect, no sharp edges or sharp corners.

5.1.2 Fiber rope safety rope

5.1.2.1 If the rope is a multi-strand rope, the number of shares shall not be less than three shares.

5.1.2.2 rope should not be left loose wire.

5.1.2.3 rope before drawing flowers should be treated with burn hot, can not burn hot treatment knitting flowers, knitting flower parts should be added protective sleeve.

5.1.2.4 When the rope end connection member, the end rings should be added to the eye bracket.

5.1.2.5 rope body construction and use of the process should not be knotted.

5.1.2.6 In the near welding, cutting, heat and other places, to deal with safety rope insulate protection.

5.1.2.7 All parts should be smooth, no material or manufacturing defect, no sharp edges or sharp corners.

5.1.3 Wire rope safety rope

5.1.3.1 should be high tensile steel wire twisted together, and uniformly twisted, tightly, not loose.

5.1.3.2 Tip should be brazed or with metal caps (sets) the bulk head gather to form a ring in front.

Note: The recommended rope aluminum frame, stainless steel wire rope is recommended to use the copper holder.

5.1.3.3 When the rope end connection member, the end rings should be added to the eye bracket.

5.1.3.4 rope shall be made of the entire root, intermediate should be joint.

5.1.3.5 are not to kink in the cord construction and during use, the coil diameter should not be too small.

5.1.3.6 When working in a corrosive environment, there should be anti-corrosion measures.

5.1.3.7 When working close to the heat source, should be used with extra toughness asbestos rope core or rope has a steel core.

5.1.3.8 All parts should be smooth, no material or manufacturing defect, no sharp edges or sharp corners.

5.1.4 Safety rope chain

5.1.4.1 chain should be consistent with GB/T 20946 requirements.

5.1.4.2 lower ring, intermediate ring and connecting ring and the internal dimensions should ensure that the number of rotation between each ring flexible links should be the same shape.

5.1.4.3 course, be straight chain, not twisted, knotted or bent.

5.1.4.4 All parts should be smooth, no material or manufacturing defect, no sharp edges or sharp corners.

5.2 Performance adjustment buckle slip

6.2 Adjustable safety rope according to the test, adjustment buckle slip should not exceed 25mm. […]

5.3 Static mechanical properties

6.3 Test Press, safety rope, the end of the eye ring in the test apparatus and adjusting force values shown in Table 1 should be no tearing and breaking. […]

5.4 Dynamic Mechanical Properties

Adjustable safety rope hanging drop by 6.4 test, safety rope should be no tearing and breaking.

5.5 Corrosion Resistance

6.5 according to the test should be no rust or other obvious signs of corrosion visible on all metal parts, allowing white. […]

6.1 Test Equipment

6.1.1 Test stand

Test containing structural rigidity hanging points, hanging points when subjected to a force 20kN, the maximum displacement is less than 1mm.

Note: should be able to protect the highly rigid hanging point dynamic mechanical property testing the test weight does not contact the ground.

6.1.2 Static mechanical testing device

Range. less than 50kN; Accuracy. 1 level.

6.1.3 Release device

Test weight can be connected to a connector or bail, upon release of the initial velocity to ensure that no test weight.

6.1.4 Test weights

Mass of (100 ± 1) kg steel (iron) cylinder, nominal diameter (200 ± 10) mm, the center of the top rings.

6.1.5 The impact of measuring instrument

Measurement range. 1.2kN ~ 20kN; Accuracy. ± 2%; the minimum sampling frequency. 1kHz.

6.2 Adjustable buckle slip test (adjustable lanyard)

Test procedure is as follows.

a) adjusting the adjustable buckle to middle safety rope;

b) along the safety ropes do initial adjustment buckle marker;

c) security Shengan mounted on the static mechanical properties test apparatus, a load applied to 6kN, holding 3min;

d) measuring the offset from mark after unloading slip.

6.3 Static mechanical properties test

Test procedure is as follows.

a) The security Shengan mounted on the static mechanical properties testing device, according to Table 1 loading, loading speed. ribbon type fiber rope safety rope and Shall not exceed 100mm/min, chain and wire rope safety rope shall not exceed 30mm/min;

b) maintaining the load reaches 3min, unloading, observe and record the destruction of the safety rope.

6.4 Dynamic mechanical properties (suspension with adjustable safety rope fall)

Test procedure is as follows.

a) adjust the position of the adjustable buckle the safety rope length (2000 ± 25) mm; if long enough, is adjusted to its maximum length;

b) through the connector connected to the end of the test weight lanyard, the other end connected to a rigid test frame hanging point, the connector should meet Engagement GB/T 23469;

c) lifting the test weight, so that the hanging point to the release point before releasing the horizontal distance of no greater than 300mm, and the free fall distance of the test weight At least (4000 ± 100) mm; length adjustable safety rope because if insufficient free fall of the test weight from the reach (4000 ± 100) mm, the maximum height to lift the test weight;

d) releasing the test weight is observed and recorded after the still heavy destruction adjustable safety rope.

6.5 Corrosion Resistance Test

Press neutral salt spray (NSS) test methods specified in GB/T 10125 is carried out, the test period is 2d.

7.1 Inspection category

Inspection category is divided into the factory inspection and type test.

7.2 Factory inspection

Production enterprises to cope with the production of the product batch by batch factory inspection, test items, test individual sample size, failure classification, sentenced

7.3 Type inspection

7.3.1 Type inspection to be carried out with the following conditions.

a) trial to identify stereotypes identification of new products or old products to the plant production;

B) When the formal production, when large changes in raw materials, production processes, the product structure and the like, may affect product performance;

c) discontinued after more than six months to restore production;

d) checking cycle, once a year;

E) When the result of the previous type factory inspection test results are quite different;

f) the relevant competent departments during type inspection requirements.

7.3.2 randomly selected sample units by the proposed test or entrust a third party inspection company from pre-qualified products, the number of samples to meet All test items required in principle.

8.1 Permanent identification

Safety ropes permanent identification shall include at least the following.

a) the product name;

b) The standard number;

c) manufacturer's name and address;

d) the production date (year, month), is valid;

e) the total length;

f) Product category job (job around the pole, area limitation or hanging drop);

g) product conformity mark;

h) statutory and regulatory requirements other content labels.

8.2 Description

Each safety rope should be with a product specification shall include at least the following.

a) Applicable safety rope;

b) the manufacturer's name and contact information;

c) The method is connected with other devices;

d) A description of the performance of the product may affect the environment, such as temperature (particularly in the vicinity of the cutting or welding), sharp edges, chemical Reagents, such as ultraviolet radiation and wear;

e) storage, cleaning or washing instructions;

Inspection method f) apparatus, and cycle conditions of scrap;

g) statutory and regulatory requirements of the other elements should be noted.