EN 14492-2:2006+A1:2009
(Main)Cranes - Power driven winches and hoists - Part 2: Power driven hoists
Cranes - Power driven winches and hoists - Part 2: Power driven hoists
This European Standard is applicable to the design, information for use, maintenance and testing of power driven hoists with or without trolleys for which the prime mover is an electric, hydraulic or pneumatic motor. They are designed for the lifting and lowering of loads which are suspended on hooks or other load lifting attachments. Hoists can be used either in cranes, in other machines, e.g. rail dependent storage and retrieval equipment, monorail conveyors or by itself.
This European Standard is applicable to the following types of hoist:
a) rope hoist;
b) chain hoist;
c) belt hoist, except belt hoist with steel belts as hoisting media;
d) open type hoist;
e) NGL building hoists including supporting structures.
This European Standard is not applicable of the following hazards:
i) this European Standard does not cover hazards related to builders hoists for the transport of goods as defined in 2000/14/EC;
ii) this European Standard does not cover hazards related to the lifting of persons.
NOTE The use of hoists for the lifting of persons may be subject to specific national regulations.
This European Standard does not specify additional requirements for hazards related to the use of hoists in explosive atmospheres in underground works.
The significant hazards covered by this European Standard are identified in Clause 4.
This document is not applicable to power driven hoists which are manufactured before the date of publication of this European Standard by CEN.
Krane - Kraftgetriebene Winden und Hubwerke - Teil 2: Kraftgetriebene Hubwerke
Diese Europäische Norm gilt für die Konstruktion, Betriebsanleitung, Wartung und Prüfung von kraftgetriebenen
Hubwerken mit oder ohne Fahrwerke, deren Hauptantriebselement ein elektrischer, hydraulischer
oder pneumatischer Motor ist. Sie sind für das Heben und Senken von an Haken oder anderen
Lastaufnahmemitteln hängenden Lasten konstruiert. Hubwerke können entweder in Kranen, in anderen
Maschinen, z. B. Regalbediengeräten, Einschienenbahnen oder für sich selbst verwendet werden.
Diese Europäische Norm gilt für die folgenden Hubwerkstypen:
a) Seilzug;
b) Kettenzug;
c) Bandzug, ausgenommen Bandzüge mit Stahlbändern als Tragmittel;
d) offenes Hubwerk;
e) Bauaufzüge für nicht geführte Lasten einschließlich Tragkonstruktionen.
Diese Europäische Norm umfasst nicht die folgenden Gefährdungen:
i) diese Europäische Norm erfasst nicht Gefährdungen durch Bauaufzüge für den Transport von
Gütern wie in 2000/14/EG definiert;
ii) diese Europäische Norm erfasst nicht Gefährdungen beim Heben von Personen.
ANMERKUNG Die Verwendung von Hubwerken für das Heben von Personen kann spezifischen nationalen
Vorschriften unterliegen.
Diese Europäische Norm spezifiziert keine zusätzlichen Anforderungen für Gefährdungen hinsichtlich des
Einsatzes von Hubwerken in explosionsfähigen Atmosphären im Bergbau.
Die von dieser Europäischen Norm erfassten signifikanten Gefährdungen sind in Abschnitt 4 identifiziert.
Dieses Dokument gilt nicht für kraftgetriebene Hubwerke, die vor dem Datum der Veröffentlichung dieses
Dokuments durch CEN gebaut wurden.
Appareils de levage à charge suspendue - Treuils et palans motorisés - Partie 2 : Palans motorisés
La présente Norme européenne s’applique à la conception, l’information pour l’utilisation, la maintenance et les essais relatifs aux palans motorisés avec ou sans chariot, dont le moteur principal est électrique, hydraulique ou pneumatique. Ces palans sont conçus pour le levage et la descente des charges suspendues à des crochets ou autres dispositifs de préhension. Les palans peuvent être utilisés dans les appareils de levage à charge suspendue, dans d’autres machines, par exemple, transtockeurs, transporteurs monorails, ou de manière autonome.
La présente Norme européenne s’applique aux types de palan suivants :
a) palan à câble ;
b) palan à chaîne ;
c) palan à sangle, à l’exception des palans à sangle avec des sangles métalliques utilisées comme matériel de levage ;
d) palan ouvert ;
e) treuil potence de chantier, y compris les structures d’appui.
La présente Norme européenne ne s’applique pas aux phénomènes dangereux suivants :
i) la présente Norme européenne ne couvre pas les phénomènes dangereux relatifs aux treuils de chantier utilisés pour le transport des biens tels que définis dans la Directive 2000/14/CE ;
ii) la présente Norme européenne ne couvre pas les phénomènes dangereux relatifs au levage de personnes.
NOTE L’utilisation de palans pour le levage des personnes peut faire l’objet de réglementations nationales spécifiques.
La présente Norme européenne ne spécifie pas de prescriptions supplémentaires pour les phénomènes dangereux relatifs à l’utilisation des palans en atmosphères explosible dans le cas de travaux en sous-sol.
Les phénomènes dangereux significatifs couverts par la présente Norme européenne sont identifiés à l’Article 4.
La présente Norme européenne s’applique aux palans motorisés fabriqués après la date d’approbation de la présente norme par le CEN.
Dvigala (žerjavi) - Motorni vitli in dvižni mehanizmi - 2. del: Motorni dvižni mehanizmi
Ta evropski standard velja za načrtovanje, informacije za uporabo, vzdrževanje in preskušanje motornih dvižnih mehanizmov z ali brez vozičkov, pri katerih glavno gibanje opravlja električni, hidravlični ali pnevmatični motor. Načrtovani so za dvigovanje ali spuščanje bremen, ki so obešena na kavlje ali ostale pripomočke za dvigovanje bremen. Dvižni mehanizmi se lahko uporabljajo pri žerjavih, pri ostalih strojih, npr. pri opremi za shranjevanje ali razkladanje, ki je odvisna od tirov, enotirnih transporterjih ali sami po sebi. Ta evropski standard velja za naslednje tipe dvižnih mehanizmov: a) vrvni dvižni mehanizem, b) verižni dvižni mehanizem, c) tračni dvižni mehanizem, razen tračnih dvižnih mehanizmov z jeklenimi trakovi kot dvižnim medijem; odprti tip dvižnih mehanizmov, e) stavbni dvižni mehanizmi NGL, ki vključuje podporno strukturo. Ta evropski standard ne velja za naslednje nevarnosti: i) Ta evropski standard ne zajema nevarnosti, ki se nanašajo na gradbena dvigala za transport blaga, kot je določeno v 2000/14/EC; ii) Ta evropski standard ne zajema nevarnosti, ki se nanašajo na dvigovanje oseb. Ta evropski standard ne določa dodatnih zahtev za nevarnosti, ki se nanašajo na uporabo dvižnih mehanizmov v eksplozivnih atmosferah in pri gradbenih delih pod zemljo. Velike nevarnosti, zajete v tem evropskem standardu, so opredeljene v Klavzuli 4. Ta dokument ne velja za gnane dvižne mehanizme, ki so bili izdelani pred datumom, ko je CEN objavil ta dokument.
General Information
- Status
- Withdrawn
- Publication Date
- 29-Sep-2009
- Withdrawal Date
- 13-Apr-2025
- Technical Committee
- CEN/TC 147 - Cranes - Safety
- Drafting Committee
- CEN/TC 147 - Cranes - Safety
- Current Stage
- 9960 - Withdrawal effective - Withdrawal
- Start Date
- 12-Jun-2019
- Completion Date
- 14-Apr-2025
- Directive
- 98/37/EC - Machinery
Relations
- Effective Date
- 11-Jul-2009
- Effective Date
- 19-Jun-2019
- Corrected By
EN 14492-2:2006+A1:2009/AC:2010 - Cranes - Power driven winches and hoists - Part 2: Power driven hoists - Effective Date
- 08-Jun-2022
Frequently Asked Questions
EN 14492-2:2006+A1:2009 is a standard published by the European Committee for Standardization (CEN). Its full title is "Cranes - Power driven winches and hoists - Part 2: Power driven hoists". This standard covers: This European Standard is applicable to the design, information for use, maintenance and testing of power driven hoists with or without trolleys for which the prime mover is an electric, hydraulic or pneumatic motor. They are designed for the lifting and lowering of loads which are suspended on hooks or other load lifting attachments. Hoists can be used either in cranes, in other machines, e.g. rail dependent storage and retrieval equipment, monorail conveyors or by itself. This European Standard is applicable to the following types of hoist: a) rope hoist; b) chain hoist; c) belt hoist, except belt hoist with steel belts as hoisting media; d) open type hoist; e) NGL building hoists including supporting structures. This European Standard is not applicable of the following hazards: i) this European Standard does not cover hazards related to builders hoists for the transport of goods as defined in 2000/14/EC; ii) this European Standard does not cover hazards related to the lifting of persons. NOTE The use of hoists for the lifting of persons may be subject to specific national regulations. This European Standard does not specify additional requirements for hazards related to the use of hoists in explosive atmospheres in underground works. The significant hazards covered by this European Standard are identified in Clause 4. This document is not applicable to power driven hoists which are manufactured before the date of publication of this European Standard by CEN.
This European Standard is applicable to the design, information for use, maintenance and testing of power driven hoists with or without trolleys for which the prime mover is an electric, hydraulic or pneumatic motor. They are designed for the lifting and lowering of loads which are suspended on hooks or other load lifting attachments. Hoists can be used either in cranes, in other machines, e.g. rail dependent storage and retrieval equipment, monorail conveyors or by itself. This European Standard is applicable to the following types of hoist: a) rope hoist; b) chain hoist; c) belt hoist, except belt hoist with steel belts as hoisting media; d) open type hoist; e) NGL building hoists including supporting structures. This European Standard is not applicable of the following hazards: i) this European Standard does not cover hazards related to builders hoists for the transport of goods as defined in 2000/14/EC; ii) this European Standard does not cover hazards related to the lifting of persons. NOTE The use of hoists for the lifting of persons may be subject to specific national regulations. This European Standard does not specify additional requirements for hazards related to the use of hoists in explosive atmospheres in underground works. The significant hazards covered by this European Standard are identified in Clause 4. This document is not applicable to power driven hoists which are manufactured before the date of publication of this European Standard by CEN.
EN 14492-2:2006+A1:2009 is classified under the following ICS (International Classification for Standards) categories: 53.020.20 - Cranes. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 14492-2:2006+A1:2009 has the following relationships with other standards: It is inter standard links to EN 14492-2:2006, EN 14492-2:2019, EN 14492-2:2006+A1:2009/AC:2010. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 14492-2:2006+A1:2009 is associated with the following European legislation: EU Directives/Regulations: 2006/42/EC, 2014/34/EU, 94/9/EC, 98/37/EC; Standardization Mandates: M/079, M/396, M/BC/CEN/91/1, M/BC/CEN/92/46. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
EN 14492-2:2006+A1:2009 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Dvigala (žerjavi) - Motorni vitli in dvižni mehanizmi - 2. del: Motorni dvižni mehanizmiKrane - Kraftgetriebene Winden und Hubwerke - Teil 2: Kraftgetriebene HubwerkeAppareils de levage à charge suspendue - Treuils et palans motorisés - Partie 2 : Palans motorisésCranes - Power driven winches and hoists - Part 2: Power driven hoists53.020.20DvigalaCranesICS:Ta slovenski standard je istoveten z:EN 14492-2:2006+A1:2009SIST EN 14492-2:2007+A1:2010en,fr01-februar-2010SIST EN 14492-2:2007+A1:2010SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14492-2:2006+A1
September 2009 ICS 53.020.20 Supersedes EN 14492-2:2006English Version
Cranes - Power driven winches and hoists - Part 2: Power driven hoists
Appareils de levage à charge suspendue - Treuils et palans motorisés - Partie 2: Palans motorisés
Krane - Kraftgetriebene Winden und Hubwerke - Teil 2: Kraftgetriebene Hubwerke This European Standard was approved by CEN on 11 October 2006 and includes Amendment 1 approved by CEN on 6 August 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 14492-2:2006+A1:2009: ESIST EN 14492-2:2007+A1:2010
Examples of power driven hoists . 55A.1Rope hoist . 55A.2Chain hoist . 56A.3Belt hoist . 57A.4Open type hoist . 58A.5NGL building hoists — Treuil potence de chantier — Bauaufzüge für nicht geführte Lasten . 59Annex B (normative)
Additional requirements when transporting hot molten masses . 60Annex C (informative)
Additional requirements for hoists intended to be used in potentially explosion atmosphere . 63C.1Introduction . 63C.2General . 63C.3Hazard sources in explosion hazard areas . 64C.3.1Electrically caused hazards . 64C.3.2Mechanically caused hazards . 64C.3.3Hazards caused by environmental conditions . 64C.3.4Measures to eliminate hazards in explosion hazard areas . 64C.3.5Marking . 65C.4User information . 65SIST EN 14492-2:2007+A1:2010
Additional requirements for operation in aggressive environments and outdoors . 66D.1General. 66D.2Ropes and chains . 66Annex E (informative)
Additional requirements for operation at low temperatures . 68Annex F (normative)
Supporting structures for NGL building hoists . 69F.1General. 69F.2Terms and definitions . 69F.3Classification . 70F.4Construction characteristics . 72F.4.1General requirements. 72F.4.2Interchangeability of parts and modularity . 73F.4.3Ease of transportation . 73F.5Calculations . 76F.5.1General. 76F.5.2Forces and load combinations to be considered . 77F.5.3Stability . 77F.5.4Structural verification . 78F.5.5Loads transmitted calculations . 79F.6Instructions . 79F.6.1Transmitted forces/moments information . 79F.6.2Markings . 82F.6.3User information . 82F.7Verifications . 83Annex G (normative)
Power driven series hoist mechanisms – Test procedure for verification of the classification . 84G.1Introduction . 84G.2Application . 84G.3Implementation of the test . 84G.3.1Framework conditions . 84G.3.2Configurations . 85G.3.3Test programme . 85G.4Acceptance criteria . 86G.5Calculation and Figures . 86Annex H (informative)
Documents for hooks . 91Annex I (informative) Values of φφφφIAL, φφφφ DAL
for different types of rated capacity limiters . 92I.1Calculation of rated capacity limiters . 92Annex J (normative)
Selection of motors . 94J.1General. 94J.2Criteria for motor selection (EN 60034-1) . 94J.2.1General. 94J.2.2Remarks on the selection of motors . 95J.2.3Degree of protection according to EN 60034-5 . 95J.2.4Thermal calculation of the motor . 95J.2.5Squirrel cage motor . 98J.2.6Power correction in function of ambient temperature and altitude . 99J.2.7Cyclic duration factor and number of working cycles per hour . 101J.3Motors for vertical motions . 101J.3.1Determination of required torque . 101J.3.2Cyclic duration factor and number of cycles per hour . 102J.4Motors for horizontal motions . 104J.4.1General. 104J.4.2Determining the torque necessary . 104J.4.3Cyclic duration factor and number of cycles per hour . 105J.4.4Rotation . 106J.4.5Span variation . 106Annex K (normative)
Noise test code . 108K.1Scope . 108SIST EN 14492-2:2007+A1:2010
Selection of a suitable set of crane standards for a given application . 114Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC . 115Annex ZB (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 94/9/EC . 116Annex ZC (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC"""" . 117Bibliography . 118 Figures Figure 1 — fleet angle.12 Figure A.1.1 — Rope hoist — Palan à câble — Seilzug .55 Figure A.1.2.1 —
Monorail trolley, “standard headroom” —
Chariot monorail, “hauteur perdue normale”
Einschienenuntergurtfahrwerk, “normale Bauhöhe” .55 Figure A.1.2.2 — Monorail trolley, “short headroom” —
Chariot monorail, “hauteur perdue réduite” —
Einschienenuntergurtfahrwerk, “kurze Bauhöhe” .55 Figure A.1.2.3 —
Crab —
Chariot birail —
Zweischienenobergurtfahrwerk .55 Figure A.1.2 — Travel carriages (Hoist mounted) — Chariots (Palan monté) — Fahrwerke (Hubwerk angebaut) .55 Figure A.2.1 — Chain hoist — Palan à chaîne — Kettenzug .56 Figure A.2.2.1 —
Monorail trolley, “standard headroom” —
Chariot monorail, “hauteur perdue normale” —
Einschienenuntergurtfahrwerk, “normale Bauhöhe” .56 Figure A.2.2.2 —
Monorail trolley, “short headroom” —
Chariot monorail, “hauteur perdue réduite” —
Einschienenuntergurtfahrwerk, “kurze Bauhöhe” .56 Figure A.2.2.3 —
Crab —
Chariot birail —
Zweischienenobergurtfahrwerk .56 Figure A.2.2 — Travel carriages (Hoist mounted) — Chariots (Palan monté) — Fahrwerke (Hubwerk
angebaut) .56 SIST EN 14492-2:2007+A1:2010
Treuil potence à tambour parallèle —
Auslegerhubwerk mit paralleler Trommel . 59 Figure A.5.2 — Jib hoist with axial drum —
Treuil potence à tambour axial —
Auslegerhubwerk mit axialer Trommel . 59 Figure A.5.3 — Hoist with trolley —
Treuil potence pour chariot —
Hubwerk mit Fahrwerk . 59 Figure A.5.4 — Suspended hoist —
Treuil potence suspendu —
Aufgehängtes Hubwerk . 59 Figure A.5.5 — Scaffold hoist — Treuil d’échafaudage — Gerüstwinde . 59 Figure F.1 — Column support —
Support — Colonne —
Dreibock . 71 Figure F.2 —Jib-extension —
Extension de potence —
Zwischenrahmen . 71 Figure F.3 — Prop support —
Chandelle —
Geschossstütze . 71 Figure F.4 — Window support —
Support fenêtre —
Fensterwinkel . 71 Figure F.5 — Scaffold support —
Support pour echafaudage —
Gerüsthalterung oder –befestigung . 71 Figure F.6 — Gantry support —
Chevalet —
Doppelrahmenstütze mit Ausleger . 72 Figure F.7 — Up-jib —
Flèche potence —
Schwenkarm . 72 Figure F.8 — Connection device to the scaffold with T-head bolt . 74 Figure F.9 — Example of hinge with anti pull-out system . 74 Figure F.10 — Connection devices for counterweight and hand rail position . 74 Figure F.11 — Example of jib positioning devices and sheave protection . 74 Figure F.12 — Example of hand lever jib positioning device. 75 Figure F.13 — Self retaining locking handle . 75 Figure F.14 — Rail buffers . 75 Figure F.15 — Feet stop and body guard for gantry support . 75 Figure F.16 — Prop head/length rate . 76 Figure F.17 — Window support hoisting position. 76 Figure F.18 — Transmitted loads from prop support . 80 Figure F.19 —Transmitted loads from scaffold support . 80 Figure F.20 — Transmitted loads from up-jib . 81 Figure F.21 — Transmitted loads from window support . 81 SIST EN 14492-2:2007+A1:2010
Tables Table 1 — List of significant hazards and associated requirements .15 Table 2 — Values for hv for estimation of IALφ .24 Table 3 — Speed limit for three-phase slipring motors .41 Table 4 — Stall torques for three-phase slipring motors with contactor control .41 Table 5 — Methods to be used to verify conformity with the safety requirements and/or measures .45 Table B.1 — Additional requirements when transporting hot molten masses .62 Table F.1 — Stability safety factor oS for various forces .78 Table F.2 — Safety coefficients for steel structures .78 Table F.3 — Load cases .78 Table F.4 — Means of verification of the safety requirements and/or measures .83 Table I.1 — Example of values .92 Table J.1 — Typical operation of torque for 2 different cycles .98 Table J.2 — Indications for the number of cycles per hour and the cycles duration factor for the vertical motions 103 Table J.3 — Indications for the number of cycles per hour and the cyclic duration factor for the horizontal motions .107 Table K.1 — Coordinates of the 6 microphone positions .110
1 Scope This European Standard is applicable to the design, information for use, maintenance and testing of power driven hoists with or without trolleys for which the prime mover is an electric, hydraulic or pneumatic motor. They are designed for the lifting and lowering of loads which are suspended on hooks or other load lifting attachments. Hoists can be used either in cranes, in other machines, e.g. rail dependent storage and retrieval equipment, monorail conveyors or by itself. This European Standard is applicable to the following types of hoist: a) rope hoist; b) chain hoist; c) belt hoist, except belt hoist with steel belts as hoisting media; d) open type hoist; e) NGL building hoists including supporting structures. This European Standard is not applicable of the following hazards: i) this European Standard does not cover hazards related to builders hoists for the transport of goods as defined in 2000/14/EC; ii) this European Standard does not cover hazards related to the lifting of persons. NOTE The use of hoists for the lifting of persons may be subject to specific national regulations. This European Standard does not specify additional requirements for hazards related to the use of hoists in explosive atmospheres in underground works. The significant hazards covered by this European Standard are identified in Clause 4. This document is not applicable to power driven hoists which are manufactured before the date of publication of this European Standard by CEN. 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. EN 418:1992, Safety of machinery — Emergency stop equipment, functional aspects —Principles for design EN 818-1:1996, Short link chain for lifting purposes — Safety — Part 1: General conditions of acceptance EN 818-7:2002, Short link chain for lifting purposes — Safety — Part 7: Fine tolerance hoist chain, Grade T (Types T, DAT and DT) !deleted text" EN 982:1996, Safety of machinery — Safety requirements for fluid power systems and their components — Hydraulics SIST EN 14492-2:2007+A1:2010
(IEC 60079-0:2004) EN 60079-1:2004, Electrical apparatus for potentially explosive gas atmospheres — Part 1: Flameproof enclosure ‘d’ (IEC 60079-1:2003) EN 60079-7:2003, Electrical apparatus for explosive gas atmospheres — Part 7: Increased safety ‘e’
(IEC 60079-7:2001) EN 60204-32:1998, Safety of machinery — Electrical equipment of machines — Part 32: Requirements for
hoisting machines (IEC 60204-32:1998)
EN 60529:1991, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989) EN ISO 3744:1995, Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering method in an essentially free field over a reflecting plane (ISO 3744:1994) EN ISO 4871:1996, Acoustics — Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996) EN ISO 11201:1995, Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a work station and at other specified positions — Engineering method in an essentially free field over a reflecting plane (ISO 11201:1995) SIST EN 14492-2:2007+A1:2010
and the static rated tensile force 3.6 direct control main power circuit is directly controlled by the hand controlled actuator without additional means between the actuator and the main power circuit SIST EN 14492-2:2007+A1:2010
Key β = fleet angle on the pulley β - α or β + α = fleet angle on the drum α = angle of the grooves on the drum Figure 1 — fleet angle On drums without grooves, the fleet angle is the angle between the rope axis and a line drawn perpendicular to the axis of the drum 3.8 force transmission two or more connected parts which transmit forces 3.9 hoist machines for lifting and lowering suspended loads over predetermined distances, with or without trolleys, using different hoist media NOTE For examples see Annex A. 3.10 hoist load mH load which includes all the masses of a load equal to the rated capacity of the hoist, the hoist medium and the fixed load lifting attachments, e.g. hooks, grabs, magnets, lifting beams, vacuum lifters 3.11 hoist medium part of the hoist and is either rope, belt, steel link chain or roller chain 3.12 hydraulic components elements (e.g. switches, valves, filters) interconnected and forming an operational hydraulic system 3.13 hydraulic overpressure pressure exceeding the rated pressure or dynamic pressure SIST EN 14492-2:2007+A1:2010
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