《ISO-4253-1993.pdf》由会员分享，可在线阅读，更多相关《ISO-4253-1993.pdf（8页珍藏版）》请在三一文库上搜索。
1、INTERNATIONAL STANDARD IS0 4253 Second edition 1993-09-I 5 Agricultural tractors - Operator s seating accommodation - Dimensions Tracteurs agricoles - Poste de conduite pour conducteur assis - Dimensions Reference number IS0 4253 1993(E) Copyright International Organization for Standardization Provi
2、ded by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 03:00:59 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 4253:1993(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation
3、of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. I
4、nternational organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical
5、 committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 4253 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and fores
6、try, Sub- Committee SC 3, Safety and comfort of the operator. This second edition cancels and replaces the first edition (IS0 4253:1977), of which it constitutes a full revision and extension. 0 IS0 1993 All rights reserved No part of this publication may be reproduced or utilized in any form or by
7、any means, electronic or mechanical, including photocopying and microfilm, without per- mission in writing from the publisher International Organization for Standardization Case Postale 56 ? CH-1211 Geneve 20 ? Switzerland Printed in Switzerland ii Copyright International Organization for Standardiz
8、ation Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 03:00:59 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD IS0 4253:1993(E) Agricultural tractors - Operator s seating accommodation -
9、 Dimensions 1 Scope This International Standard lays down dimensions for the operator s seat and the location of specific con- trols relative to the Seat Index Point (SIP) within the seating accommodation on agricultural tractors with a track width greater than 1 150 mm. The controls included are th
10、e steering-wheel, clutch pedal, brake pedal(s), and throttle pedal. Standardized dimensions and locations will assist the future design of operator s seating accommodation on agricultural tractors. 2 Normative reference The following standard contains provisions which, through reference in this text
11、, constitute provisions of this International Standard. At the time of publi- cation, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most re- cent edi
12、tion of the standard indicated below. Mem- bers of IEC and IS0 maintain registers of currently valid International Standards. IS0 5353:1978, Earth-moving machinery, and tractors and machinery for agriculture and forestry - Seat index point. 3 Definitions For the purposes of this International Standa
13、rd, the following definitions apply. 3.1 length of seat in front of SIP: Horizontal dis- tance parallel to the longitudinal plane of the vehicle, measured from the front edge of the seat cushion (offset 150 mm on either side of the longitudinal centreline) to the vertical transverse plane containing
14、 the seat index point. 3.2 width of seat cushion: Width measured along the transverse plane through the seat index point. 3.3 pedal(s): Any or all of the clutch, brake and throttle pedals. 4 Adjustment of pedals and steering-wheel The pedals shall be adjusted in accordance with the manufacturer s in
15、structions. Measurements of the pedal position shall be made before any force is ap- plied to move the pedals. The measurement point of a pedal is where the longitudinal and transverse centrelines of the pedal tread surface intersect. The measurement point for the steering-wheel is the point where t
16、he centreline through the steering-wheel axis intersects with the upper plane of the steering- wheel rim. 5 Lateral arrangement of pedals The pedals shall be placed in the following order from the left-hand side to the right-hand side: clutch (oper- ated by the left foot), brake(s) (operated by the
17、right foot) and, if installed, the foot throttle (operated by the right foot). NOTE 1 This arrangement is in accordance with the rec- ommendations in IS0 3789-l 1982, Tractors, machinery for agriculture and forestry, powered lawn and garden equip- ment - Location and method of operation of operator
18、con- trols - Part 1: Common controls and IS0 3789-2.1982, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment - Location and method of op- eration of operator controls - Part 2: Controls for agricul- tural tractors and machinery 1 Copyright International Organization
19、for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 03:00:59 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 4253:1993(E) 6 Dimensions The dimensions and angles for the operator s seating a
20、ccommodation shall be as shown in figures 1 to 4. Before measurements are made, the SIP shall be de- termined, with the seat at the mid-point of the seat s longitudinal, vertical and angular adjustment. 6.1 Seat dimensions Seat dimensions shall be in accordance with figures 1 and 2 (see note 2). The
21、 rearward inclination of the loaded seat cushion surface shall be 3” to 12” to the horizontal, measured with the loading device specified in IS0 5353 in position. Choice of angle of inclination within this range will depend on the seating position. The minimum and preferred ranges of longitudinal an
22、d vertical adjustment of the seat from its mid-position are given in table 1. The longitudinal and vertical ad- justments shall be independent of each other. It shall be possible to make such adjustments without the use of tools. Table 1 - Seat adjustment Rayge Adjustment Minimum Optimum mm mm Longi
23、tudinal adjustment for- ward and rearward from the mid-position f 75 5 100 Vertical adjustment upwards and downwards from the mid- position * 30 * 50 NOTE 2 The drawing of the seat in figures 1 and 2 is diagrammatic only and is not intended to indicate any design features 6.2 Pedal location The posi
24、tion of the clutch and brake pedals from the SIP is mainly dependent on the angle between the operator s upper and lower leg. The dimensions 1, and h, (see figure 1) and their interrelationship is given in figure3. The distance of the foot throttle forward from the transverse axis through the SIP sh
25、all not be greater than 90 % of 1,. 6.3 Steering-wheel location The position of the steering-wheel relative to SIP is mainly dependent on the angle of the upper arms to the torso and the angle between the upper and lower arm. The dimensions Z2 and I+ (see figure 1) and their interrelationship are gi
26、ven in figure 4. The longitudinal axis through the centre of the steering-wheel may be offset a maximum of 350 6 s 0 300 250 300 350 400 450 5do 550 600 Distance L2 forward of SIP.mm Figure 4 - Steering-wheel position relative to SIP 4 Copyright International Organization for Standardization Provide
27、d by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 03:00:59 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA T
28、echnical Standards 1/9972545001 Not for Resale, 04/26/2007 03:00:59 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 4253:1993(E) UDC 631.372:629.11.014 Descriptors: agricultural machinery, agricultural tractors, cabs, operator seats, dimensions, ergonomics Price based on 4 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 03:00:59 MDTNo reproduction or networking permitted without license from IHS -,-,-