SIST EN 13157:2004+A1:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Krane - Sicherheit - Handbetriebene KraneAppareils de levage à charge suspendue - Sécurité - Appareils de levage à brasCranes - Safety - Hand powered cranes53.020.20DvigalaCranesICS:Ta slovenski standard je istoveten z:EN 13157:2004+A1:2009SIST EN 13157:2004+A1:2009en01-november-2009SIST EN 13157:2004+A1:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13157:2004+A1
August 2009 ICS 53.020.20 Supersedes EN 13157:2004English Version
Cranes - Safety - Hand powered cranes
Appareils de levage à charge suspendue - Sécurité - Appareils de levage à bras
Krane - Sicherheit - Handbetriebene Krane This European Standard was approved by CEN on 22 October 2003 and includes Corrigendum 1 issued by CEN on 8 October 2008 and Amendment 1 approved by CEN on 16 July 2009.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13157:2004+A1:2009: ESIST EN 13157:2004+A1:2009

Standards for hooks . 56Annex ZA (informative)
Relationship of this European Standard and the essential requirements of EC Directive 98/37/EC . 57Annex ZB (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC" . 58
1 Scope This European Standard specifies requirements for the following hand powered lifting equipment defined in clause 3: − Hand chain blocks; − Lever hoists; − Jaw winches; − Hand powered trolleys supporting lifting machines; − Drum winches; − Pulley blocks and deflection pulley. The significant hazards covered by this European Standard are identified in clause 4. This European Standard does not cover hazards related to the lifting of persons. This standard does not specify the additional requirements for: − use in ambient temperature outside the range of - 10°C to + 50°C, − hand powered lifting equipment in direct contact with food stuffs or pharmaceuticals requiring a high level of cleanliness for hygiene reasons; − hazards resulting from handling specific hazardous materials (e.g. explosives, hot molten masses, radiating materials); − hazards caused by operation in an explosive atmosphere. This European Standard is applicable to hand powered lifting equipment, which are manufactured after the date of approval by CEN of this standard. 2 Normative references !The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies." !deleted text" !EN 818-7:2002", Short link chain for lifting purposes — Safety — Part 7: Fine tolerance hoist chain, Grades T (Types T, DAT and DT) EN 1005-3, Safety of machinery — Human physical performance — Part 3: Recommended force limits for machinery operation !deleted text" EN 12385-1, Steel wire ropes — Safety — Part 1: General requirements EN 12385-4, Steel wire ropes — Safety — Part 4: Stranded ropes for general lifting applications EN 13411-1, Terminations for steel wire ropes — Safety — Part 1: Thimbles for steel wire rope slings EN 13411-2, Terminations for steel wire ropes — Safety — Part 2: Splicing of eyes for wire rope slings SIST EN 13157:2004+A1:2009

Figure 1 — Example of combined units 3.1.6 static tests testing of lifting equipment by applying a specified static load, exceeding the rated capacity 3.1.7 test coefficient the ratio between the load used for static and dynamic tests and the rated capacity 3.2 Definitions for hand chain blocks 3.2.1 hand chain block device for lifting and lowering a load suspended from one chain (the load chain) by means of human effort applied to another chain (the hand chain) and for holding this load (see figure 2) SIST EN 13157:2004+A1:2009

by means of human effort applied to a lever and to hold it by means of a braking devices(see figure 3) 3.3.3 pitch circle diameter twice the distance between the drum or the sheave axle and the middle of the rope or webbing in direct contact with the drum or sheaves (first layer on drum) SIST EN 13157:2004+A1:2009

Figure 5 — Example of geared travel trolley 3.5.3 monorail equipment comprising an overhead beam or section along which suspended loads can be moved with a trolley. This equipment can also have curves, points, turntables etc. 3.5.4 push travel trolley hand powered trolleys permitting horizontal travel by pushing or pulling manually on the load (see figure 6) SIST EN 13157:2004+A1:2009

4. Monorail Figure 6 — Example of a push travel trolley
3.6 Definitions for drum winches 3.6.1 ˜drum winch™ device for lifting, lowering and holding a load connected to a rope or webbing wound onto a drum by means of (a) crank handle(s) or operating wheel(s) activated by human effort (see figure 7) 3.6.2 D/d ratio the ratio of the pitch circle diameter of the first rope or webbing layer on the drum or sheave to the diameter of the rope or the thickness of the webbing. 3.6.3 drum pitch circle diameter twice the distance between the drum or the sheave axle and the middle of the rope or webbing in direct contact with the drum or sheaves (first layer on drum). SIST EN 13157:2004+A1:2009

Drum pitch diameter d
Minimum calculated rope diameterFigure 7 — Example of a drum winch 3.7 Definitions for pulley blocks and deflection pulley 3.7.1 deflection pulley equipment used to change the direction of a rope with a sheave freely rotating on an axle to be used with drum winches and jaw winches 3.7.2 pulley block an assembly of one or more sheaves, rotating freely on one or more shafts used to change the direction of a wire rope or a rope to be used with drum winches and jaw winches (see figure 8) 3.7.3 pitch diameter twice the distance between the drum or the sheave axle and the middle of the rope or webbing in direct contact with the drum or sheaves (first layer on drum) 3.7.4 sheave wheel with a groove supporting a wire rope or a fibre rope SIST EN 13157:2004+A1:2009

5. Wire rope or rope guide 6. Sheave 7. Anchorage D
Sheave pitch circle diameter d Nominal diameter of the lifting medium Figure 8 — Pulley block SIST EN 13157:2004+A1:2009

1.1 From machine parts or workpieces caused for example, by their:
1.1.1 Shape 5.1.7 1.1.3 Mass and stability (potential energy of elements that can move under the effect of gravity) 5.1.1 1.1.5 Inadequacy of mechanical strength 5.1.2, 5.1.8, 5.1.10, 5.1.11 1.3 Elementary hazards:
1.3.1 Crushing hazards: 5.1.7 1.3.2 Shearing hazard 5.1.7 1.3.3 Cutting or severing hazard 5.1.10 1.3.4 Entanglement hazard 5.1.7 1.3.5 Drawing-in or trapping hazard 5.1.7 1.3.6 Impact hazard 5.1.3 1.3.7 Puncture hazard 5.1.10 8 Hazards generated by neglecting ergonomic principles in machine design such as hazards caused by:
8.1 Unhealthy postures or excessive efforts 5.1.6, 5.1.8 8.6 Human errors 5.1.1, 7.1.1 15 Assembly errors 7.1.1 17 Fall or ejection of objects 5.1.4, 5.1.5 18 Loss of stability/overturning of machine 7.1.1 20 Hazards relating to movement:
20.6 Inadequate ability of machine to be slowed down, stopped and immobilised 5.1.1 21 Hazards due to work position (including operator’s position) on the machine:
21.4 Mechanical hazards at work position
- contact with wheels 5.1.1 23 Resulting from the handling of the machine (lack of stability) 5.1.12 26 Inadequate instructions for driver/operator 7.1.1 27 Mechanical hazards and dangerous events:
27.1 Resulting from falling load, collisions, swinging of machine caused by
Uncontrolled loading – over loading 5.1.6, 7.1.1, 7.1.3
Uncontrolled amplitude of the movement 5.1.1
Unexpected/unintended movement of the loads 5.1.4, 5.1.9
Inadequate holding devices 5.1.8
Collision of more than one machine 5.1.4 27.3 Resulting from a derailment 5.1.1 27.4 Resulting from inadequate mechanical strength of parts 5.1.2 27.5 Resulting from inadequate design of pulleys, drums Not significant 27.6 Resulting from inadequate selection/integration into the machine for chains, cables, lifting accessories 5.1.8, 5.1.10 27.7 Resulting from descent of load by friction brakes 5.1.3 27.8 Resulting from abnormal assembly/test/use/maintenance conditions 7.1.1, 7.1.2 29 Hazards generated by neglecting ergonomic principles
29.1 Inadequate visibility from the operator position 7.1.1 SIST EN 13157:2004+A1:2009

Table 2 — List for lever hoists of significant hazards and associated requirements Hazard Relevant clause(s) in this standard 1 Mechanical hazards
1.1 From machine parts or workpieces caused for example, by their:
1.1.1 Shape 5.2.8 1.1.3 Mass and stability (potential energy of elements that can move under the effect of gravity) 5.2.1 1.1.5 Inadequacy of mechanical strength 5.2.2, 5.2.9, 5.2.12, 5.2.13, 5.2.14, 5.2.15, 5.2.16, 5.2.18 1.3 Elementary hazards:
1.3.1 Crushing hazards: 5.2.8 1.3.2 Shearing hazard 5.2.8 1.3.3 Cutting or severing hazard 5.2.8 1.3.4 Entanglement hazard 5.2.8 1.3.5 Drawing-in or trapping hazard 5.2.8 1.3.6 Impact hazard 5.2.3 1.3.7 Puncture hazard 7.2.1 8 Hazards generated by neglecting ergonomic principles in machine design such as hazards caused by:
8.1 Unhealthy postures or excessive efforts 5.2.6, 5.2.9 8.6 Human errors 5.2.1, 5.2.19, 7.2.1 15 Assembly errors 7.2.1 17 Fall or ejection of objects 5.2.3, 5.2.5, 5.2.7 18 Loss of stability/overturning of machine 7.2.1 20 Hazards relating to movement:
20.6 Inadequate ability of machine to be slowed down, stopped and immobilised 5.2.1 21 Hazards due to work position (including operator’s position) on the machine:
21.4 Mechanical hazards at work position
- contact with wheels 5.2.1 23 Resulting from the handling of the machine (lack of stability) 5.2.20 26 Inadequate instructions for driver/operator 7.2.1 27 Mechanical hazards and dangerous events:
27.1 Resulting from falling load, collisions, swinging of machine caused by
Uncontrolled loading – over loading 5.2.6, 7.2.1, ,
Uncontrolled amplitude of the movement 5.2.5, 5.2.15
Unexpected/unintended movement of the loads 5.2.3, 5.2.4, 5.2.7
Inadequate holding devices 5.2.9
Collision of more than one machine 5.2.1 27.3 Resulting from a derailment 5.2.1 27.4 Resulting from inadequate mechanical strength of parts 5.2.2 27.5 Resulting from inadequate design of pulleys, drums 5.2.10, 5.2.17 27.6 Resulting from inadequate selection/integration into the machine for chains, cables, lifting accessories 5.2.9, 5.2.11, 5.2.12, 5.2.13, 5.2.14, 5.2.16. 27.7 Resulting from descent of load by friction brakes 5.2.3 27.8 Resulting from abnormal assembly/test/use/maintenance conditions 7.2.1, 7.2.2 29 Hazards generated by neglecting ergonomic principles
29.1 Inadequate visibility from the operator position 7.2.1
Table 3 — List for jaw winches of significant hazards and associated requirements HazardRelevant clause(s) in this standard 1 Mechanical hazards
1.1 From machine parts or workpieces caused for example, by their:
1.1.1 Shape 5.3.7 1.1.3 Mass and stability (potential energy of elements that can move under the effect of gravity) 5.3.5 1.1.5 Inadequacy of mechanical strength 5.3.1, 5.3.10, 5.3.11, 5.3.12, 5.3.13 1.3 Elementary hazards:
1.3.1 Crushing hazards: 5.3.7 1.3.2 Shearing hazard 5.3.7 1.3.3 Cutting or severing hazard 5.3.7 1.3.4 Entanglement hazard 5.3.7 1.3.5 Drawing-in or trapping hazard 5.3.7 1.3.6 Impact hazard 5.3.2 1.3.7 Puncture hazard 7.3.1 8 Hazards generated by neglecting ergonomic principles in machine design such as hazards caused by:
8.1 Unhealthy postures or excessive efforts 5.3.5, 7.3.1 8.6 Human errors 5.3.6, 5.3.14, 7.3.1 15 Assembly errors 7.3.1 17 Fall or ejection of objects 5.3.3, 5.3.5 18 Loss of stability/overturning of machine 7.3.1 20 Hazards relating to movement:
20.6 Inadequate ability of machine to be slowed down, stopped and immobilised Not applicable 21 Hazards due to work position (including operator’s position) on the machine:
21.4 Mechanical hazards at work position
- contact with wheels Not applicable 23 Resulting from the handling of the machine
5.3.15 26 Inadequate instructions for driver/operator 7.3.1 27 Mechanical hazards and dangerous events:
27.1 Resulting from falling load, collisions, swinging of machine caused by
Uncontrolled loading – over loading 5.3.1, 5.3.5, 7.3.1, 7.3.3
Uncontrolled amplitude of the movement Not significant
Unexpected/unintended movement of the loads 5.3.2, 5.3.4, 5.3.3, 5.3.6, 5.3.9
Inadequate holding devices 5.3.8
Collision of more than one machine Not significant 27.3 Resulting from a derailment Not applicable 27.4 Resulting from inadequate mechanical strength of parts 5.3.1 27.5 Resulting from inadequate design of pulleys, drums Not significant 27.6 Resulting from inadequate selection/integration into the machine for chains, cables, lifting accessories 5.3.10, 5.3.11, 5.3.12 27.7 Resulting from descent of load by friction brakes 5.3.2 27.8 Resulting from abnormal assembly/test/use/maintenance conditions 7.3.1, 7.3.2 29 Hazards generated by neglecting ergonomic principles
29.1 Inadequate visibility from the operator position 7.3.1
Table 4 — List for hand powered trolleys of significant hazards and associated requirements Hazard Relevant clause(s) in this standard 1 Mechanical hazards
1.1 From machine parts or workpieces caused for example, by their:
1.1.1 Shape 5 General 1.1.3 Mass and stability (potential energy of elements that can move under the effect of gravity) 5.4.1 1.1.5 Inadequacy of mechanical strength 5.4.2, 5.4.8, 5.4.11 1.3 Elementary hazards:
1.3.1 Crushing hazards: 5 General 1.3.2 Shearing hazard 5 General 1.3.3 Cutting or severing hazard 5 General 1.3.4 Entanglement hazard 5 General 1.3.5 Drawing-in or trapping hazard 5 General 1.3.6 Impact hazard 7.4.1, 7.4.3 1.3.7 Puncture hazard 5.4.8 8 Hazards generated by neglecting ergonomic principles in machine design such as hazards caused by:
8.1 Unhealthy postures or excessive efforts 5.4.6 8.6 Human errors 5.4.12, 7.4.1 15 Assembly errors 7.4.1 17 Fall or ejection of objects 5.4.5 18 Loss of stability/overturning of machine 7.4.1 20 Hazards relating to movement:
20.6 Inadequate ability of machine to be slowed down, stopped and immobilised 5.4.3, 7.4.1, 7.4.3 21 Hazards due to work position (including operator’s position) on the machine:
21.4 Mechanical hazards at work position
- contact with wheels 7.4.1 23 Resulting from the handling of the machine (lack of stability) 7.4.1 26 Inadequate instructions for driver/operator 7.4.1 27 Mechanical hazards and dangerousevents:
27.1 Resulting from falling load, collisions, swinging of machine caused by
Uncontrolled loading – over loading 7.4.1, 7.4.3
Uncontrolled amplitude of the movement 5.1.1
Unexpected/unintended movement of the loads 5.4.10
Inadequate holding devices 7.4.1
Collision of more than one machine 5.4.7 27.3 Resulting from a derailment 5.4.7, 5.4.9 27.4 Resulting from inadequate mechanical strength of parts 5.4.2, 5.4.8 27.5 Resulting from inadequate design of pulleys, drums Not significant 27.6 Resulting from inadequate selection/integration into the machine for chains, cables, lifting accessories 5.4.8 27.7 Resulting from descent of load by friction brakes 5.4.2 27.8 Resulting from abnormal assembly/test/use/maintenance conditions 7.4.1, 7.4.2 29 Hazards generated by neglecting ergonomic principles
29.1 Inadequate visibility from the operator position 7.4.1
Table 5 — List for drum winches of significant hazards and associated requirements HazardRelevant clause(s) in this standard 1 Mechanical hazards
1.1 From machine parts or workpieces caused for example, by their:
1.1.1 Shape 5.5.7 1.1.3 Mass and stability (potential energy of elements that can move under the effect of gravity) Not significant 1.1.5 Inadequacy of mechanical strength 5.5.1, 5.5.8, 5.5.10, 5.5.11, 5.5.13 1.3 Elementary hazards:
1.3.1 Crushing hazards: 5.5.7, 7.5.1 1.3.2 Shearing hazard 5.5.7, 7.5.1 1.3.3 Cutting or severing hazard 5.5.7, 7.5.1 1.3.4 Entanglement hazard 5.5.7, 7.5.1 1.3.5 Drawing-in or trapping hazard 5.5.7, 7.5.1 1.3.6 Impact hazard 5.5.3, 7.5.1 1.3.7 Puncture hazard 7.5.1 8 Hazards generated by neglecting ergonomic principles in machine design such as hazards caused by:
8.1 Unhealthy postures or excessive efforts 5.5.5 8.6 Human errors 5.5.14, 7.5.1 15 Assembly errors 7.5.1 17 Fall or ejection of objects 5.5.3, 5.5.4 18 Loss of stability/overturning of machine 7.1.1 20 Hazards relating to movement:
20.6 Inadequate ability of machine to be slowed down, stopped and immobilised Not applicable 21 Hazards due to work position (including operator’s position) on the machine:
21.4 Mechanical hazards at work position
- contact with wheels Not applicable 23 Resulting from the handling of the machine
7.5.1 26 Inadequate instructions for driver/operator 7.5.1 27 Mechanical hazards and dangerous events:
27.1 Resulting from falling load, collisions, swinging of machine caused by
Uncontrolled loading – over loading 5.5.5, 7.5.1, 7.5.3
Uncontrolled amplitude of the movement Not applicable
Unexpected/unintended movement of the loads 5.5.2, 5.5.4, 5.5.6
Inadequate holding devices 5.5.8
Collision of more than one machine Not applicable 27.3 Resulting from a derailment Not applicable 27.4 Resulting from inadequate mechanical strength of parts 5.5.1, 5.5.8, 5.5.10, 5.5.11, 5.5.12 27.5 Resulting from inadequate design of pulleys, drums 5.5.9, 5.5.11, 7.5.1 27.6 Resulting from inadequate selection/integration into the machine for chains, cables, lifting accessories 5.5.10,
27.7 Resulting from descent of load by friction brakes 5.5.2 27.8 Resulting from abnormal assembly/test/use/maintenance conditions 7.5.1, 7.5.2 29 Hazards generated by neglecting ergonomic principles
29.1 Inadequate visibility from the operator position 7.5.1
Table 6 — List for pulley blocks and sheaves of significant hazards and associated requirements Hazard Relevant clause(s) in this standard 1 Mechanical hazards
1.1 From machine parts or workpieces caused for example, by their:
1.1.1 Shape 5 General 1.1.3 Mass and stability (potential energy of elements that can move under the effect of gravity)
1.1.5 Inadequacy of mechanical strength 5.6.1, 5.6.7 1.3 Elementary hazards:
1.3.1 Crushing hazards: 5 General, 7.6.1 1.3.2 Shearing hazard 5 General, 7.6.1 1.3.3 Cutting or severing hazard 5 General, 7.6.1 1.3.4 Entanglement hazard 5 General, 7.6.1 1.3.5 Drawing-in or trapping hazard 5 General, 7.6.1 1.3.6 Impact hazard 5.6., 7.6.1 1.3.7 Puncture hazard 7.6.1 8 Hazards generated by neglecting ergonomic principles in machine design such as hazards caused by:
8.1 Unhealthy postures or excessive efforts Not applicable 8.6 Human errors 5.6.11, 7.6.1 15 Assembly errors 7.6.1 17 Fall or ejection of objects 5.6.2, 5.6.3, 5.6.6 18 Loss of stability/overturning of machine 7.6.1 20 Hazards relating to movement:
20.6 Inadequate ability of machine to be slowed down, stopped and immobilised Not applicable 21 Hazards due to work position (including operator’s position) on the machine:
21.4 Mechanical hazards at work position
- contact with wheels Not applicable 23 Resulting from the handling of the machine
Not significant
26 Inadequate instructions for driver/operator 7.6.1 27 Mechanical hazards and dangerous events:
27.1 Resulting from falling load, collisions, swinging of machine caused by
Uncontrolled loading – over loading 5.1.6, 7.1.1, 7.1.3
Uncontrolled amplitude of the movement Not applicable
Unexpected/unintended movement of the loads 5.6.2, 5.6.6
Inadequate holding devices 5.6.3
Collision of more than one machine Not applicable 27.3 Resulting from a derailment Not applicable 27.4 Resulting from inadequate mechanical strength of parts 5.6.1 27.5 Resulting from inadequate design of pulleys, drums 5.6, 5.6.4, 5.6.10 27.6 Resulting from inadequate selection/integration into the machine for chains, cables, lifting accessories 7.6.1 27.7 Resulting from descent of load by friction brakes Not applicable 27.8 Resulting from abnormal assembly/test/use/maintenance conditions 7.6.1, 7.6.2 29 Hazards generated by neglecting ergonomic principles
29.1 Inadequate visibility from the operator position 7.6.1
5 Safety requirements and/or measures !The lifting equipment shall comply with the safety requirements and/or measures of this clause. In addition, the lifting equipment shall be designed according to the principles of EN ISO 12100 for hazards relevant but not significant which are not dealt with by this European Standard." 5.1 Hand chain blocks 5.1.1 Combined units The trolley of a combined trolley and hand chain block shall be in accordance with 5.4. 5.1.2 Mechanical strength 5.1.2.1 The mechanical strength shall be checked by an appropriate calculation method. Hand chain blocks shall have a coefficient of utilisation (safety coefficient) of at least 4: 1. 5.1.2.2 Hand chain blocks shall be designed to withstand 1 500 cycles with 110% of the rated capacity with no failure or replacement of parts, no resting time, except for lubrication, a lifting path of the load chain of at least 300 mm per cycle in order to get at least a complete revolution of the load chain wheel. 5.1.3 Braking Hand chain blocks shall have an automatic braking function during the lifting and lowering operation. The braking function shall be automatic when the operating force ceases, whether the motion is lifting or lowering. The braking device shall allow a regular descent under operator control whatever the position of the load. The brakes shall not contain asbestos. 5.1.4 Springs !The fracture of a spring shall not lead to a failure of safety elements except the springs used for load hook safety latches." This can be fulfilled by incorporation of a single guided pressure spring or by using several springs. Guided pressure springs shall have a distance between the coils of less than or equal to the wire diameter. When using several springs, in the case of the failure of one spring, the remaining spring(s) shall ensure that the retention is maintained. 5.1.5 Operating elements Hand chains shall be secured against unintentional disconnection from the hand chain wheel. 5.1.6 Operating effort To lift the rated capacity the operating effort of each operator shall not exceed 55 daN on the hand chain. SIST EN 13157:2004+A1:2009

To avoid overloading, the operating effort of each operator to lift the rated capacity shall be between the following values:
a) rated capacity ≤ 1 000 kg: b) 1 000 kg < rated capacity< 5 000 kg: c) 5 000 kg ≤ rated capacity: 20 daN up to 55 daN on the hand chain 40 daN up to 55 daN on the hand chain 45 daN up to 55 daN on the hand chain If the operating effort is beneath 20 daN at rated capacity the hand chain block shall be equipped with an overload protection system, against overloading caused by excessive operating effort on the hand chain. The overload system shall be independent from the braking device and shall operate ˜in a way™ that the lowering function is maintained and that the load remains under control. The triggering shall not lead to sudden release of the hand chain. 5.1.7 Guarding cover Accessible parts of the hand chain block shall have no sharp edges, no sharp angles, and no rough surfaces likely to cause injury. Gearing shall be guarded to prevent accidental ingress of parts of the body. 5.1.8 Hooks Hooks shall be fitted with safety latches to prevent unintentional detachment. The top hook shall be capable of swivelling for correct positioning Load hooks used as lifting medium, which are not manufactured in accordance with a recognised standard shall not show permanent deformation at a static load of 2-times the rated capacity. At a static load of 4-times the rated capacity, the hook shall be allowed to bend however the load shall remain held safely. This shall be ensured by selecting the appropriate materials and by the heat treatment. NOTE Standards for hooks are listed in annex A 5.1.9 Chain wheel A chain guide shall be provided to prevent the hand chain and the load chain from jumping off of the chain wheels. The selection criteria and the technical requirements shall be in accordance with EN 818-7. Load chain wheels shall be made in one piece. 5.1.10 Link chain The coefficient of utilisation shall be at least 4 for welded load bearing calibrated link chains; − Load chains shall be in accordance with EN 818-7, for fine tolerance short link chains (grade T) Hand chains shall have no sharpness around the welds. The connecting links of the hand chain shall resist without permanent deformation a force of at least 120 daN. SIST EN 13157:2004+A1:2009

- 10°C to + 50°C unless another temperature range is agreed between the manufacturer and the purchaser. 5.1.13 Safety devices The braking system and the overload protection system shall only be able to be removed, modified replaced, interfered or neutralised by the use of tools. 5.1.14 Handling, installation and fastening The requirement for safe handle of chain blocks is fulfilled: − If handles, hooks, or other means for slinging is provided or; − If the design of the chain blocks provides hand gripping points for manual handling. 5.2 Lever hoists 5.2.1 Combined units The trolley of a combined trolley and lever hoist shall be in accordance with 5.4. 5.2.2 Mechanical strength 5.2.2.1 The mechanical strength shall be checked by an appropriate calculation method. Lever hoists shall have a coefficient of utilisation (safety coefficient) of at least 4 : 1. 5.2.2.2 The lever hoist shall be designed to withstand 1 500 cycles with 110% of the rated capacity with no failure, no replacement of parts, no resting time, except for lubrication, a lifting path of the lifting medium of at least 300 mm per cycle in order to get at least a complete revolution of the load chain wheel or drum. 5.2.3 Braking Lever hoists shall have an automatic braking function during the lifting and lowering operation. The braking function shall be automatic when the operating force ceases, whether the motion is lifting or lowering. The braking device shall allow a regular descent automatically controlled whatever the position of the load. The brakes shall not contain asbestos. SIST EN 13157:2004+A1:2009

20 daN up to 55 daN on the lever
b) 1 000 kg < rated capacity< 5 000 kg:
40 daN up to 55 daN on the lever c) 5 000 kg ≤ rated capacity:
45 daN up to 55 daN on the lever
If the operating effort is beneath 20 daN at rated capacity the lever hoist shall be equipped with an overload protection system, against overloading caused by excessive operating effort on the levers. The overload system shall be independent from the braking device and shall operate ˜in a way™ that the lowering function is maintained and that the load remains under control. The triggering shall not lead to sudden release of the lever. SIST EN 13157:2004+A1:2009
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