1、 _ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising ther
2、efrom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2017 SAE International All rights reserved. No part of this
3、publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-49
4、70 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/standards.sae.org/J2267_201710 SURFACE VEHICLE STANDARD J2267 OCT2017 Issued 2007-04 Reaffirmed 2017-10 Supersed
5、ing J2267 APR2007 Minimum Performance Criteria for Operator Front Protective Structure (OFPS) for Certain Equipment RATIONALE J2267 has been reaffirmed to comply with the SAE Five-Year Review policy. 1. Scope 1.1 This SAE standard applies to all forestry machines exposed to the hazard of objects pen
6、etrating the front of the operator station (other than the roof). This would include: 1.1.1 Front guards for yarders with cabs mounted next to the tower; 1.1.2 Front guards for forestry machines capable of handling material in front of and above the deflection limiting volume (DLV); such as knuckle
7、boom log loaders and swing to tree feller bunchers; but excluding rubber-tired or tracked front-end loaders when equipped with buckets or forks with hold down grapple arm(s); and excluding forwarders and clambunk skidders fitted with load bunk headboards meeting the requirements of ISO 11850. 1.2 Th
8、e evaluations are for resistance to penetration of guards or deflection to the point of infringement of the Deflection Limiting Volume (DLV). (See SAE J397.) The performance requirements of a representative specimen (that is, within the manufacturers specifications) are based on the performance of p
9、roven structures under laboratory evaluation procedures. 1.3 The purpose of these Operator Front Protective Structures (OFPS) is to protect the operator from boom and load collapse, or head-on collision or impact with logs handled by the machine with the least adverse effect on operator visibility,
10、and comfort. 1.4 Although OFPS meeting the following criteria may not give protection under all conceivable circumstances in which the machine could be struck from the front, it is expected that protection will be ensured under at least the loading condition specified in the test listed in Section 6
11、. 1.5 The protection provided by this document is intended to supplement, but not replace, other types of protection provided by other standards, such as SAE J1084. 1.6 Purpose This document establishes a consistent, repeatable test procedure and performance requirements for evaluating OFPS intended
12、 to provide forestry machine operators with reasonable protection from falling or swinging objects such as logs. 2. References 2.1 Applicable Publications The following publication forms a part of this specification to the extent specified herein. The latest issue of SAE publications shall apply. 2.
13、1.1 SAE PUBLICATIONS Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. SAE J397Deflection Limitation Volume SAE J1209Identification Terminology of Mobile Forestry Machines SAE J1119Steel Produc
14、ts for Rollover Protective Structures (ROPS) and Falling Object Protective Structures (FOPS) 2.1.2 ISO PUBLICATION Available from ANSI, 25 West 43rd Street, New York, NY 10036-8002, Tel: 212-642-4900, www.ansi.org. ISO 3471Earth-moving machineryRoll-over protective structuresLaboratory tests and per
15、formance requirements 3. Facilities and Apparatus 3.1 Facilities for Static Test 3.1.1 Standard laboratory penetration test object, made of steel, with the shape of the tapered end of the object in Figure 1. The object length shall be sufficient to avoid a diameter larger than 250 mm (10 in.) making
16、 contact with the during test. 3.1.2 A means of pushing the test object into the front guard. 3.1.3 A means of measuring the force exerted to push the object into the front guard. 3.1.4 A means of determining if the OFPS or drop test object enters the deflection limiting zone (DLV, see SAE J397) dur
17、ing the drop test. This may be either of the following; 3.1.4.1 A DLV made of a material which will indicate any penetration by the OFPS. Grease or a similar substance may be put on either the surface of the OFPS guard adjacent to the DLV, or on the surfaces(s) of the DLV adjacent to the OFPS, to in
18、dicate such penetration. SAE INTERNATIONAL J2267 OCT2017 Page 2 of 8_ 3.1.4.2 A dynamic instrumentation system of sufficient frequency response to indicate the pertinent deflection with respect to the DLV ( 5%). 3.1.5 A means of simultaneously measuring the deflection distance and the force used to
19、push the object into the OFPS. FIGURE 1STANDARD LABORATORY DROP TEST OBJECT 3.2 Facilities for Optional Dynamic Test 3.2.1 A drop test object, made of steel, as shown in Figure 1. 3.2.2 A means of raising the drop test object to the required height. 3.2.3 A means of releasing the drop test object so
20、 that it falls without restraint. 3.2.4 A surface of such firmness that it shall not be penetrated by the machine or test bed under the loading of the drop test. SAE INTERNATIONAL J2267 OCT2017 Page 3 of 8_ 3.2.5 A means of determining if the OFPS or drop test object enters the deflection limiting z
21、one (DLV, see SAE J397) during the drop test, as described in 3.1.4. 4. Machine or Test Bed Condition 4.1 The OFPS to be tested must be attached to the machine structure in the same manner as it will be attached during machine use. A totally assembled machine is not required: however, the machine st
22、ructure and frame which support the OFPS must represent the actual machine installation, and the stiffness of the structure and frame must not be less than that of an actual machine. 4.2 All detachable panels not part of the OFPS which might be removed on an operating machine shall be removed so tha
23、t they do not contribute to the strength of the OFPS. 4.3 If glazing material is used it may be removed for the test. 4.4 Test specimens shall be representative of units within the manufacturers specifications. 5. Test Procedure 5.1 Static Test 5.1.1 The small end of the appropriate laboratory penet
24、ration test object shall be placed against the OFPS at the location designated in 5.1.2 to 5.1.4. 5.1.2 The small end of the drop test object is to be entirely within the perpendicular projection of the DLV on the OFPS being tested (front or side). 5.1.3 Should the perpendicular projection of the DL
25、V on the front guard be divided into two, or more, segments by perpendicular projections of major structural members, the directions of paragraph 5.1.2 and 5.1.4 shall apply to each segment. See Figure 2. If the cab is equipped with a sloped roof type skylight, this area is not considered part of th
26、e OFPS unless the angle between the skylight and horizontal exceeds 15. 5.1.4 Within the limitation of paragraph 5.1.2, the test object shall be so placed that it has the least possible distance from the centroid of the OFPS (front or side). 5.1.5 The object shall be pushed in a plane perpendicular
27、to the OFPS surface at the location(s) indicated in 5.1.2 and 5.1.3. 5.1.6 The rate of deflection shall be such that the loading can be considered static. The rate of load application can be considered static provided the rate of deflection at the load application point is not greater than 5 mm/sec.
28、 (0.2 in./sec.). 5.1.7 Force and deflection at deflection increments no greater than 15 mm (0.6 in.), measured at the point of application of the load shall be recorded. 5.1.8 Loading shall continue until the OFPS has achieved the energy requirements given in 6.1. (See Figure 3 for the method of cal
29、culating energy.) The deflection used in calculating energy shall be the displacement of the OFPS along the line of action of the force. The line of action of the load object shall be maintained within a circle of 50 mm (2 in.) radius of the initial contact point. SAE INTERNATIONAL J2267 OCT2017 Pag
30、e 4 of 8_ FIGURE 2DROP TEST IMPACT POINT 5.2 Optional Dynamic Test 5.2.1 The drop test object (small end of the object down), must be positioned so that it strikes the OFPS perpendicular to the surface of the OFPS being tested and at the locations designated in paragraphs 5.1.2, 5.1.3, and 5.1.4. SA
31、E INTERNATIONAL J2267 OCT2017 Page 5 of 8_ 5.2.2 The drop test object is to be raised vertically 5.2 m above the position indicated in paragraphs 5.1.2, 5.1.3, and 5.1.4. 5.2.3 The drop test object is to be released so that it falls without effective restraint onto the OFPS. 5.2.4 As it is unlikely
32、that the free fall will result in the object hitting at the location and/or in the attitude of paragraphs 5.2.1 and 5.2.2, the following limits are placed on deviations: 5.2.4.1 The initial impact of the small end of the drop test object shall be entirely within a circle of 200 mm (8 in) radius The
33、center of this circle is to coincide with the vertical center line of the drop test object as positioned per paragraphs 5.2.1-5.2.4. 5.2.4.2 The first impact between the drop test object and the OFPS shall be only along the small end of the drop test object and or the radius contiguous to that end (
34、Figure 1). 5.2.4.3 There is no limitation on location or attitude of subsequent impacts. NOTEIt is the intent of the recommended practice to impose the most severe test condition of the OFPS. 6. Performance Requirements 6.1 During static testing, the DLV shall not be entered by any deflection of the
35、 OFPS or the penetration test object up to an absorbed energy level of 11,526 J (8,500 ft. lbs.). 6.2 During optional dynamic testing, the DLV shall not be entered by any deflection of the OFPS or the drop test object under the first, or any subsequent impacts of the test object. 6.3 The test shall
36、be performed with the OFPS guard at -18 C (0 F), or below, or the material used in the OFPS guard shall exhibit one of the Charpy V notch impact strengths at -30 C (-20 F) or 20 C (-4 F) shown in Table 1. (SAE Information Report J1119 presents more data on specifics of CVN requirements of Table 1. S
37、AE J1119 also gives information on chemistries, manufacturing processes, and tensile properties of steel suitable for use in OFPS, but only the CVN impact strengths are the mandatory requirement of the OFPS material option.) 6.4 If safety glazing materials are used as part of the OFPS it shall meet
38、the criteria of SAE J674a (June, 1976), except that safety glazing materials meeting specifications of test groups 4 and 5 of ANSI Z26.1-1966 (Including Supplement Z26.1-1969) may be used anywhere in the machine including the front windshield. 6.5 The cab must remain attached to the machine througho
39、ut the test. 7. Labeling 7.1 The OFPS shall be labeled according to SAE JISO3471. The protection afforded (operator front protection) should be described in the operators manual and / or referenced on the label. SAE INTERNATIONAL J2267 OCT2017 Page 6 of 8_ TABLE 1MINIMUM CHARPY V NOTCH IMPACT STRENG
40、THS Energy at Specimen Size mm -30 C J -30 C ft-lb. -20 C J(2)-20 C ft-lb.(2)10 x 10(1)11.0 8.0 27.5 20 10 x 9 10.0 7.5 25 18.4 10 x 8 9.5 7.0 24 17.7 10 x 7.5(1)9.5 7.0 24 17.7 10 x 7 9.0 6.5 22.5 16.6 10 x 6.7 8.5 6.5 21 15.5 10 x 6 8.0 6.0 20 14.8 10 x 5(1)7.5 5.5 19 14 10 x 4 7.0 5.0 17.5 12.9 1
41、0 x 3.3 6.0 4.5 15 11.1 10 x 3 6.0 4.5 15 11.1 10 x 2.5(1)5.5 4.0 14 10.3 1. Indicates preferred size. Specimen size shall be no less than the largest preferred size that the material will permit. Reference: ASTM A 370, Standard Methods and Definitions for Mechanical Testing of Steel Products. 2. Th
42、e energy requirement at -20 C is 2.5 times the value specified for -30 C. Other factors affect impact strength, i.e., direction of rolling, yield strength, grain orientation and welding. These factors shall be considered when selecting and using a steel. SAE INTERNATIONAL J2267 OCT2017 Page 7 of 8_ FIGURE 3FORCE DEFLECTION CURVE PREPARED BY THE SAE OFF-ROAD MACHINERY TECHNICAL COMMITTEE SC4 FORESTRY AND LOGGING MACHINERY SAE INTERNATIONAL J2267 OCT2017 Page 8 of 8_
