ISO INTERNATIONAL STANDARD 7176-8 Second edition 2014-12-15 Wheelchairs - Part 8: Requirements and test methods for static, impact and fatigue strengths Fauteuils roulants - Partie 8: Prescriptions et méthodes d'essai pour la résistance statique, la résistance aux chocs et la résistance a la fatigue Reference number ISO 7176-8:2014(E) SO International Organization for Standardization Institute of Sta andardization5956617 IS02014 vided by IHS under I ted without license from IHS IS0 7176-8:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's 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 copyright@iso.org Web www.iso.org Published in Switzerland Prganizationfor Standardization networking permtted without license from IHS IS0 7176-8:2014(E) Contents Page Foreword ..V Introduction. ..vii 1 Scope. 2 Normative references 3 Terms and definitions 4 Requirements ..2 4.1 Strength requirements .2 4.2 Disclosure requirements .3 5 Test apparatus. .3 6 Preparation of the test wheelchair .13 6.1 Setup and adjustment of the wheelchair. .13 6.2 Test dummies. ..14 6.3 Preparation of wheelchair ..14 6.4 Records .14 6.5 Safety during testing ..14 7 Sequence of tests ..14 8 Test methods for static strength ..15 8.1 Principle... .15 8.2 Wheelchair preparation .15 8.3 Selection of ioading pad 15 8.4 Arm supports: Resistance to downward forces. .15 8.5 Foot supports: Resistance to downward forces. .16 8.6 Tipping levers. .19 8.7 Handgrips. 21 8.8 Arm supports: Resistance to upward forces. 22 8.9 Foot supports: Resistance to upward forces 24 8.10 Push handles: Resistance to upward load. 27 8.11 Scooter steering handles: Resistance to forward forces .29 8.12 Scooter steering handles: Resistance to rearward forces 30 8.13 Scooter steering handles: Resistance to downward forces .31 8.14 Scootersteeringhandles:Resistancetoupwardforces .32 9 Test methods for impact strength .33 9.1 Principle. .33 9.2 Wheelchair preparation. 33 9.3 Back support: Resistance to impact .33 9.4 Handrim: Resistance to impact 35 9.5 Castors: Resistance to impact.. 36 9.6 Foot supports: Resistance to impact .38 9.7 Impacts on anti-tip devices... .40 10 Fatigue tests .43 10.1 Principle.. .43 10.2 Preparation of test wheelchair forfatigue tests ..43 10.3 Multi-drum test. .44 10.4 Droptest. ..46 10.5 Fatigue test of manually operated parking brakes .48 11 Evaluation of test results ..49 11.1 Evaluation and records of individual tests ..49 11.2 Evaluation at end of testing. ..49 12 Test report. .49 iii ed without license from IHS