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BS EN 81-50:2014

$215.11

Safety rules for the construction and installation of lifts. Examinations and tests – Design rules, calculations, examinations and tests of lift components

Published By Publication Date Number of Pages
BSI 2014 98
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This European Standard specifies the design rules, calculations, examinations and tests of lift components which are referred to by other standards used for the design of passenger lifts, goods passenger lifts, goods only lifts, and other similar types of lifting appliances.

PDF Catalog

PDF Pages PDF Title
4 Contents Page
8 1 Scope
2 Normative references
9 3 Terms and definitions
4 List of significant hazards
10 5 Design rules, calculations, examinations and tests
5.1 General provisions for type examinations of safety components
5.1.1 Object and extent of the tests
11 5.1.2 General provisions
5.2 Type examination of landing and car door locking devices
5.2.1 General provisions
5.2.1.1 Field of application
5.2.1.2 Documents to be submitted
12 5.2.1.3 Test samples
5.2.2 Examination and tests
5.2.2.1 Examination of operation
5.2.2.2 Mechanical tests
13 5.2.2.3 Criteria for the mechanical tests
5.2.2.4 Electrical test
14 5.2.3 Test particular to certain types of locking devices
5.2.3.1 Locking device for horizontally or vertically sliding doors with several panels
15 5.2.3.2 Flap type locking device for hinged door
5.2.4 Type examination certificate
5.3 Type examination of safety gear
5.3.1 General provisions
5.3.2 Instantaneous safety gear
5.3.2.1 Test samples
16 5.3.2.2 Test
17 5.3.2.3 Determination of the permissible mass
18 5.3.3 Progressive safety gear
5.3.3.1 Statement and test sample
5.3.3.2 Test
20 5.3.3.3 Calculation of the permissible mass
5.3.3.4 Possible modification to the adjustments
21 5.3.4 Comments
5.3.5 Type examination certificate
5.4 Type examination of overspeed governors
5.4.1 General provisions
22 5.4.2 Check on the characteristics of the overspeed governor
5.4.2.1 Test samples
5.4.2.2 Test
23 5.4.3 Type examination certificate
5.5 Type examination of buffers
5.5.1 General provisions
5.5.2 Samples to be submitted
24 5.5.3 Test
5.5.3.1 Energy dissipation buffers
25 5.5.3.2 Energy accumulation buffers with non linear characteristics
27 5.5.4 Type examination certificate
28 5.6 Type examination of safety circuits containing electronic components and/or programmable electronic systems (PESSRAL)
5.6.1 General provisions
5.6.1.1 General
5.6.1.2 Safety circuits containing electronic components
5.6.1.3 Safety circuits based on programmable electronic systems
5.6.2 Test samples
29 5.6.3 Tests
5.6.3.1 Mechanical tests
30 5.6.3.2 Temperature tests (EN 60068214)
5.6.3.3 Failure analysis of electric safety circuits
5.6.4 Type examination certificate
31 5.7 Type examination of ascending car overspeed protection means
5.7.1 General provisions
5.7.2 Statement and test sample
5.7.3 Test
5.7.3.1 Method of test
32 5.7.3.2 Test procedure
33 5.7.3.3 Checking after the tests
5.7.4 Possible modification to the adjustments
5.7.5 Test report
5.7.6 Type examination certificate
5.8 Type examination of unintended car movement protection means
5.8.1 General provisions
34 5.8.2 Statement and test sample
35 5.8.3 Test
5.8.3.1 Method of Test
5.8.3.2 Test procedure
36 5.8.3.3 Checks after the test
5.8.4 Possible modification to the adjustments
37 5.8.5 Test report
5.8.6 Type examination certificate
5.9 Type examination of rupture valve/one-way restrictor
5.9.1 General provisions
5.9.1.1 General
38 5.9.1.2 Samples to be submitted
5.9.1.3 Test
5.9.1.4 Test procedure
41 5.9.1.5 Interpretation of the tests
5.9.1.6 Type examination certificate
42 5.10 Guide rails calculation
5.10.1 Range of calculation
5.10.2 Bending
43 5.10.3 Buckling
44 5.10.4 Combination of bending and compression/tension or buckling stresses
45 5.10.5 Flange bending
5.10.6 Deflections
46 5.11 Evaluation of traction
5.11.1 Introduction
5.11.2 Traction calculation
5.11.2.1 General
47 5.11.2.2 Evaluation of T1 and T2
48 5.11.2.3 Evaluation of the friction factor
51 5.11.3 Fomulae for a general case
54 5.12 Evaluation of safety factor on suspension ropes for electric lifts
5.12.1 General
5.12.2 Equivalent number Nequiv of pulleys
5.12.2.1 General
55 5.12.2.2 Evaluation of Nequiv(t)
5.12.2.3 Evaluation of Nequiv(p)
5.12.3 Safety factor
57 5.13 Calculations of rams, cylinders, rigid pipes and fittings
5.13.1 Calculation against over pressure
5.13.1.1 Calculation of wall thickness of rams, cylinders, rigid pipes and fittings
5.13.1.2 Calculation of the base thickness of cylinders (examples)
59 5.13.2 Calculations of the jacks against buckling
5.13.2.1 General
5.13.2.2 Single acting jacks
60 5.13.2.3 Telescopic jacks without external guidance, calculation of ram
61 5.13.2.4 Telescopic jacks with external guidance
62 5.14 Pendulum shock tests
5.14.1 General
63 5.14.2 Test rig
5.14.2.1 Hard pendulum shock device
5.14.2.2 Soft pendulum shock device
5.14.2.3 Suspension of the pendulum shock device
5.14.2.4 Pulling and triggering device
5.14.2.5 Test samples
5.14.3 Tests
64 5.14.4 Interpretation of the results
5.14.5 Test report
67 5.15 Electronic components – Failure exclusion
74 5.16 Design rules for programmable electronic systems (PESSRAL)
75 Annex A (normative)Model form of type examination certificate
76 Annex B (normative)Programmable electronic systems in safety related applications for lifts (PESSRAL)
B.1 Common measures
78 B.2 Specific measures
80 B.3 Descriptions of possible measures
85 Annex C (informative)Example for calculation of guide rails
C.1 General
87 C.2 General configuration for lifts with safety gear
C.2.1 Safety gear operation
C.2.1.1 Bending stress
88 C.2.1.2 Buckling
C.2.1.3 Combined stress)
89 C.2.1.4 Flange bending)
C.2.1.5 Deflections)
C.2.2 Normal operation, running
C.2.2.1 Bending stress
C.2.2.2 Buckling
C.2.2.3 Combined stress)
C.2.2.4 Flange bending)
90 C.2.2.5 Deflection)
C.2.3 Normal operation, loading
C.2.3.1 Bending stress
C.2.3.2 Buckling
C.2.3.3 Combined stress)
91 C.2.3.4 Flange bending
C.2.3.5 Deflections
92 Annex D (informative)Calculation of traction – Example
94 Annex E (informative)Equivalent number of pulleys Nequiv – Examples
95 Annex ZA (informative)Relationship between this European Standard and the Essential Requirements of EU Directive 95/16/EC amended by Directive 2006/42/EC
BS EN 81-50:2014
$215.11