BS EN 1756-1:2021

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Tail lifts. Platform lifts for mounting on wheeled vehicles. Safety requirements – Tail lifts for goods

Published By	Publication Date	Number of Pages
BSI	2021	84

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Categories: 43.040.99 - Other road vehicle systems, BSI

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Description

This document specifies safety requirements for design of tail lifts as defined in 3.1 for mounting on wheeled goods vehicles. It also specifies the verification of such tail lifts and the safety information that has to be provided for their use.

This document deals with the technical requirements to minimize the hazards listed in Clause 4 which can arise during the operation of tail lifts when carried out in accordance with the specifications as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer or his authorized representative.

It applies to tail lifts:

used for the purpose of loading and/or unloading such vehicles;
intended to be fitted, temporarily or permanently, either inside or on the front, side or rear of the wheeled vehicle;
driven either by hand or power operated;
equipped with a platform to support loads which comprise goods, an operator, or a combination of the two;
with a maximum lifting height not exceeding 3 m above ground when the platform is unloaded;
rotary type with a maximum lifting height not exceeding 2 m;
used as a link bridge when intended by the manufacturer.

NOTE

A tail lift is not to be confused with a link bridge attached to a loading dock which is included within the definition of a dock leveller and is outside the scope of this document.

Loading and/or unloading operations include the use of a tail lift to lift and/or lower loads.

This document does not establish the additional requirements for:

the risk of falling when operating under 2 m height;
overloading at vehicle floor level;
drive system with lead screw and nuts;
operation in severe conditions (e.g. extreme environmental conditions such as freezer applications, high temperatures, corrosive environment, tropical environment, contaminating environments, strong magnetic fields);
operations subject to special rules (e.g. potentially explosive atmospheres);
supply by electrical networks and the electrical circuit;
power take off part of the system;
electromagnetic compatibility (emission-immunity);
static electricity problems;
handling of loads the nature of which could lead to dangerous situations (e.g. molten metal, acids/bases, radiating materials, especially brittle loads);
hazards occurring during installation, transportation, decommissioning;
hazards occurring when handling suspended loads which can swing freely;
requirement related to the use on public roads;
wind pressure in and out of use;
direct contact with foodstuffs;
earthquake;

— lightning.

This document is not applicable to tail lifts manufactured before the publication of this document.

PDF Catalog

PDF Pages	PDF Title
2	undefined
13	1 Scope
14	2 Normative references
15	3 Terms and definitions
21	4 List of hazards
24	5 Safety requirements and/or protective measures 5.1 General requirements 5.2 Working area 5.3 Manual effort
25	5.4 Operating speeds 5.4.1 General 5.4.2 Vertical speed 5.4.3 Stowing and deploying speeds 5.4.4 Tilting speed
26	5.5 Load stability 5.5.1 Tilt angle 5.5.2 Stop devices 5.6 Limitations of travel 5.7 Layout of wires and pipes 5.8 Unauthorized operation 5.9 Power supply 5.9.1 Isolation of energy sources 5.9.2 Tail lift electrical installation
27	5.10 Tail lift stowage 5.10.1 Indication 5.10.2 Security 5.11 Crushing and shearing 5.12 Static load coefficients 5.13 Platform 5.13.1 Surface
28	5.13.2 Bluntness of edges 5.13.3 Tail lift used as a link bridge 5.13.4 Visibility of platform 5.14 Drive systems 5.14.1 Unintentional movements 5.14.1.1 General 5.14.1.2 Hydraulic systems leakage
29	5.14.1.3 Mechanical suspensions failure 5.14.2 Mechanical suspension systems 5.14.2.1 Steel wire ropes 5.14.2.2 Steel chains
30	5.14.2.3 Rope or chain retention 5.14.2.4 Angle of lead (fleet angle) 5.14.2.5 Adjusting device 5.14.2.6 Wire rope and drum suspensions 5.14.2.7 Secondary suspension (unloaded safety suspension) 5.14.3 Hydraulic systems 5.14.3.1 General 5.14.3.2 Rating of hoses 5.14.3.3 Pressure limiting device
31	5.14.3.4 Pressure gauge 5.14.3.5 Reservoir 5.15 Safety devices 5.15.1 Safety related functions
32	5.15.2 Safety mechanisms 5.15.3 Springs inside safety devices 5.16 Loading control 5.16.1 Prevention of lifting excessive loads 5.16.2 Excessive moment 5.17 Control devices 5.17.1 Hold-to run principle 5.17.2 Logic 5.17.3 Unintentional operation
33	5.17.4 One control device for several movements 5.17.5 Several control devices for one movement 5.17.6 Mobile control units 5.17.7 Cableless mobile control systems 5.17.7.1 General 5.17.7.2 Active and inactive modes 5.17.7.3 Matching transmitter code to a single receiver
34	5.17.7.4 Disruption of connection 5.17.7.5 Control device ergonomics 5.18 Control positions 5.18.1 Multiple control positions 5.18.2 Location of control positions 6 Verification of the safety requirements and/or measures
39	7 Information for use 7.1 General 7.2 Tail lift used as a link bridge 7.3 Inherent risks associated with improper use 7.4 Location and nature of information for use 7.4.1 Marking on the tail lift
40	7.4.2 Instructions and handbooks 7.4.2.1 Information for maintenance and inspection 7.4.2.2 Installation instructions
41	7.4.2.3 User handbook
42	7.4.2.4 Maintenance instructions
43	7.4.3 Inspection record
44	Annex A (informative)Tail lift mechanisms and types A.1 Mechanisms A.1.1 Parallelogram A.1.2 Column
45	A.1.3 Telescopic A.2 Types A.2.1 Conventional: (full and part width)
46	A.2.2 Folding platform
47	A.2.3 Retractable A.2.4 Rotary
48	A.2.5 Door mounted
49	A.2.6 Inset A.2.7 Internally mounted A.3 Types of platform
50	Annex B (normative)Crushing and shearing B.1 General B.2 Platform lifting and lowering B.2.1 General B.2.2 Two-hand control units
51	B.2.3 Two-foot control units B.2.4 Toe guard B.2.4.1 Toe guard for vertical movement
52	B.2.4.2 Toe guard for parallelogram type system
54	B.2.5 Hinged foot protector
55	B.2.6 Safety sensor
56	B.2.7 Automatic toe protector
57	B.2.8 Assigned operator position
58	B.3 Platforms capable of lifting above vehicle floor level B.4 Platform closure and opening B.4.1 General B.4.2 Two-hand control units B.4.3 Safety sensor
59	B.4.4 Mobile control units
60	Annex C (informative)Structure and drive system
62	Annex D (normative)Drive systems – Steel wire ropes and chains D.1 Recommended specifications of steel wire ropes D.2 Dimensions of pulley grooves D.3 Flare angle
63	D.4 Fleet angles D.5 Pitch circle
64	Annex E (normative)Examples of controls logic
66	Annex F (informative)Marking
67	Annex G (informative)Detailed examples of unintentional operation
68	Annex H (normative)Verification concerning installation H.1 Compatibility between the lift and the vehicle H.2 Optional equipment H.3 Static test H.3.1 Deformation H.3.2 Drift H.4 Dynamic test H.5 Test of operation and safety function
69	H.6 Test to verify that the tail lift cannot lift excessive load
70	Annex I (informative)Overloads onto a platform at vehicle floor level
71	Annex J (informative)Protective devices for the working area J.1 General J.2 Handholds J.3 Guard-rails
72	J.4 Examples of platform mounted guard-rails J.4.1 General J.4.2 Demountable side guard-rails mounted on the platform surface J.4.3 Foldable side guard-rail mounted on the platform surface
73	J.4.4 Side guard-rail swinging open to the pavement
74	J.4.5 Runner mounted guard-rails – Three-side protection – not permitting side (un)loading J.5 Examples of body mounted guard-rails
76	Annex K (informative)Tail lift electrics K.1 General K.2 Vehicle – Tail lift interface K.2.1 ETMA Code A and B K.2.2 Interface positions
77	K.3 Power supply
79	Annex ZA (informative)Relationship between this European Standard and the Essential requirements of EU Directive 2006/42/EC aimed to be covered

Additional information

Status	Definitive
Pages	84
Publication Date	2021-08-20
ISBN	978 0 539 05422 4
Standard Number	BS EN 1756-1:2021
Title	Tail lifts. Platform lifts for mounting on wheeled vehicles. Safety requirements – Tail lifts for goods
Identical National Standard Of	EN 1756-1
Replaces	BS EN 1756-1:2001+A1:2008
Descriptors	Hoists, Materials handling equipment, Platforms, Tail lifts, Safety engineering, Vehicles, Safety measures, Lifting equipment
Publisher	BSI
Committee	MHE/12/4
ICS Codes	43.040.99 - Other road vehicle systems

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