1、 ISO 2012 Cranes Access, guards and restraints Part 4: Jib cranes Appareils de levage charge suspendue Moyens daccs, dispositifs de protection et de retenue Partie 4: Grues flche INTERNATIONAL STANDARD ISO 11660-4 First edition 2012-02-01 Reference number ISO 11660-4:2012(E) ISO 11660-4:2012(E) ii I
2、SO 2012 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
3、 either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ISO 11660-4:2012(E) Foreword ISO (the Internation
4、al Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been e
5、stablished has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standard
6、ization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for vo
7、ting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all su
8、ch patent rights. ISO 11660-4 was prepared by Technical Committee ISO/TC 96, Cranes, Subcommittee SC 8, Jib cranes. ISO 11660 consists of the following parts, under the general title Cranes Access, guards and restraints: Part 1: General Part 2: Mobile cranes Part 3: Tower cranes Part 4: Jib cranes P
9、art 5: Bridge and gantry cranes ISO 2012 All rights reserved iii Cranes Access, guards and restraints Part 4: Jib cranes 1 Scope This part of ISO 11660 establishes the particular requirements relating to access, guards and restraints for jib cranes as defined in ISO 4306-1. ISO 11660-1 establishes t
10、he general requirements for access to control stations and other areas of cranes as defined in ISO 4306-1, during normal operations, maintenance, inspection, erection and dismantling. It also deals with guards and restraints in general, concerning the protection of persons on or near the crane with
11、regard to moving parts, falling objects or live parts. 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 (includi
12、ng any amendments) applies. ISO 11660-1:2008, Cranes Access, guards and restraints Part 1: General ISO 13852, Safety of machinery Safety distances to prevent danger zones being reached by the upper limbs 3 T erms and definitio ns For the purposes of this document, the terms and definitions given in
13、ISO 11660-1 apply. 4 Access 4.1 General All control stations and other parts of the crane during normal operations, inspection, maintenance, erection or dismantling operations, as necessary, shall be accessible by means of walkways, stairs, ladders, landings or by mobile, ground-mounted access facil
14、ities. 4.2 Requirements 4.2.1 General design requirements for access 4.2.1.1 Compliance with ISO 11660-1 The design requirements for access shall comply with the clauses/subclauses of ISO 11660-1:2008 specified in Table 1 below, completed by the corresponding subclauses of this part of ISO 11660 spe
15、cified in the same table. INTERNATIONAL STANDARD ISO 11660-4:2012(E) ISO 2012 All rights reserved 1 ISO 11660-4:2012(E) Table 1 Design requirements for access Hazard/access means Applicable clause/subclause of ISO 11660-1:2008 Applicable subclause of this part of ISO 11660 Crushing hazard between mo
16、ving parts 5.8 4.2.1.2 Stairs 6 4.2.1.3 Rung ladders 7 4.2.1.4 Manholes and hatch apertures 9 4.2.1.5 Access provision along the jib 9 4.2.2. 4.2.1.2 Crushing hazard between moving parts Where there is a danger of crushing occurring on frequently used access ways (type 1), the transfer points shall
17、be provided with interlocked gates that disable the relevant motion. For less frequent points of access (type 2), where persons could be present between moving parts, a safety distance of at least 0,5 m should be observed. Where such a distance cannot be obtained, warning labels, highlighting the da
18、ngers, and devices to disable the relevant motions, shall be fitted. 4.2.1.3 Stairs In addition to the dimensions given in ISO 11660-1, the recommended dimensions for steps are as follows: rise: 200 mm; clear width: 500 mm. 4.2.1.4 Rung ladders The first flight of the rung ladder shall be no greater
19、 than 10 m. Rung ladders shall be provided with rest landings at least every 10 m of vertical climb. 4.2.1.5 Manholes and hatch apertures If the cranes construction does not allow larger dimensions: for type 1 access according to ISO 11660-1, the minimum dimensions for effective hatch apertures shal
20、l be (0,5 m 0,5 m); for type 2 access according to ISO 11660-1, the minimum dimensions for effective hatch apertures shall be (0,5 m 0,4 m). 4.2.2 Access provided along the inclined jib 4.2.2.1 General When it is not possible to lower the jib to the ground to carry out inspection and maintenance of
21、the mechanism and/or its components, a walkway along the jib shall be provided with side protection, or a personal protective device to prevent falls. 4.2.2.2 Walkway The width of the walkway shall comply with ISO 11660-1:2008, Table 6, type 2 access. 2 ISO 2012 All rights reserved ISO 11660-4:2012(
22、E) When the size of the jib is sufficient to allow walking inside the jib (i.e. the dimension between the walkway and the upper member is greater than or equal to 1,8 m), toe boards having a minimum height of 0,03 m shall be provided on each side of the walkway. When the dimension between the walkwa
23、y and the upper member is less than 1,8 m, a toe board may be provided on one side only (see Figure 1). Dimension in metres Figure 1 Walkway with toe board on one side 5 Guards and restraints 5.1 Guards for moving parts During access to all the control stations and other parts of the crane, moving p
24、arts shall be guarded by safety distances as defined in ISO 13852, or by the provision of removable or fixed guards. Warnings shall be provided for those moving parts without guarding. Open gears, chain drives and similar power transmissions in permanent access zones shall be guarded. Exceptionally,
25、 the guarding of large slewing gears may not be required if the drawing-in points of the pinion/gear are located sufficiently remote from frequently used access ways (type 1), in accordance with ISO 13852. If the crane construction does not permit such guards, e.g. in top slewing cranes, or areas of
26、 limited space within the connection between the slewing ring support, slewing ring and slewing platform, warnings shall be provided. Guards intended for use on walkways or work platforms shall be designed in accordance with ISO 11660-1 for this use. Multi-part hook block designs shall be used to mi
27、nimize the risk of drawing-in of the hand between the rope and the sheave. NOTE For functional inspection and maintenance reasons, the rope drums, brakes and couplings are not generally covered or guarded, as there will normally be no one near the machinery during normal crane operation. 5.2 Prevent
28、ion from falling of crane components and tools Crane parts such as gears, pulleys, covers or boxes shall be designed, assembled and fixed so as to prevent them from falling during normal operation. ISO 2012 All rights reserved 3 ISO 11660-4:2012(E) Covers, guards and access closures shall be fitted
29、with hinges or other means to prevent them from falling. The external gears of slewing assemblies shall be provided with covers or another device to prevent them from falling in case of rupture or jamming. 4 ISO 2012 All rights reserved ISO 11660-4:2012(E) Bibliography 1 ISO 4306-1, Cranes Vocabulary Part 1: General ISO 2012 All rights reserved 5ISO 11660-4:2012(E) ISO 2012 All rights reserved ICS 53.020.20 Price based on 5 pages
