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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 therefr
2、om, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2007 SAE International All rights reserved. No part of this publication may
3、 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: 724-776-4970 (outside USA) Fa
4、x: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS:http:/www.sae.org SURFACE VEHICLE STANDARD J2473 REAF. NOV2007 Issued2001-08 Reaffirmed2007-11 Superseding J2473 AUG2001 Self-Propelled Sweepers and ScrubbersMaximum Gradient Rating During Hopper Discharge 1.ScopeThis SAE Standard establi
5、shes the maximum gradient rating during hopper discharge of self- propelled, driver-operated sweepers and scrubbers as defined by SAE J2130. 2.References 2.1Applicable PublicationsThe following standards form a part of the specification to the extent specified herein. Unless otherwise indicated, the
6、 latest revision of the publications shall apply. 2.1.1SAE PUBLICATIONAvailable from SAE, 400 Commonwealth Drive, Warrendale, PA 15096 0001. SAE J2130Self-Propelled Sweepers SAE J2180A Tilt-Table Procedure for Measuring the Static Rollover Threshold for Heavy Trucks 2.2Related PublicationsThe follow
7、ing publications are for information purposes only and are not a required part of this document. 2.2.1SAE PUBLICATIONAvailable from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001. SAE J765 OCT90Crane Load Stability Test code. 2.2.2ASME PUBLICATIONAvailable from ASME, 22 Law Drive, Box 2900,
8、Fairfield, NJ 07007-2900. ASME B56.1-1993Safety Standard for Low Lift and High Lift Trucks 3.Definitions 3.1Hopper Rated LoadThe material mass in kilograms of bagged sand applied to the hopper according to the manufacturers specifications. 3.2OutriggersExtendable or fixed arms attached to the base m
9、achine that rest on the supporting surface to define the balance point fulcrum. See Figures 1 and 2. 3.3Tipping Line (side dump) 3.3.1SWEEPER WITH STEERABLE AXLEA line connecting the centers of contact of the front and rear tires with the ground reference plane on the tipping side of the machine. Se
10、e Figures 3 and 4. Copyright SAE International Provided by IHS under license with SAELicensee=Defense Supply Ctr/5913977001 Not for Resale, 12/04/2007 18:52:46 MSTNo reproduction or networking permitted without license from IHS -,-,- SAE J2473 Reaffirmed NOV2007 -2- FIGURE 1OUTRIGGER EQUIPPED FIGURE
11、 2OUTRIGGER EQUIPPED FIGURE 3SIDE DISCHARGE Copyright SAE International Provided by IHS under license with SAELicensee=Defense Supply Ctr/5913977001 Not for Resale, 12/04/2007 18:52:46 MSTNo reproduction or networking permitted without license from IHS -,-,- SAE J2473 Reaffirmed NOV2007 -3- FIGURE 4
12、SIDE DISCHARGE 3.3.2SWEEPER WITH OSCILLATING AXLEA line connecting the center of contact of the tire on the rigid axle with the ground reference plane on the tipping side of the machine and the center of oscillation of the oscillating axle. 3.3.3SWEEPER WITH ARTICULATING STEERINGA line connecting th
13、e center of contact of the tires on the tipping axle when the vehicle is set to turn on full lock away from the tipping side. See Figure 4c. 3.3.4SWEEPER WITH OUTRIGGERSA line connecting the center of contract of the outrigger pads with the ground reference plane on the tipping side of the machine.
14、See Figure 1. 3.4Tipping Line (front or rear dump) 3.4.1SWEEPER WITHOUT OUTRIGGERSA line through the front or rear axle on the tipping end of the machine. See Figures 5 and 6. FIGURE 5REAR DISCHARGE Copyright SAE International Provided by IHS under license with SAELicensee=Defense Supply Ctr/5913977
15、001 Not for Resale, 12/04/2007 18:52:46 MSTNo reproduction or networking permitted without license from IHS -,-,- SAE J2473 Reaffirmed NOV2007 -4- FIGURE 6FRONT DISCHARGE 3.4.2SWEEPER WITH OUTRIGGERSA line connecting the center of contact of the outrigger pads with the ground reference plane on the
16、tipping end of the machine. See Figure 2. 3.5Balance Point 3.5.1MACHINE WITHOUT OUTRIGGERSThe moment acting to overturn the machine at hopper rated load that shall not cause any tire on the side opposite the load side to lift more than 1.6 mm from the ground reference. 3.5.2MACHINE WITH OUTRIGGERSTh
17、e moment acting to overturn the machine at hopper rated load that shall not cause any tire or outrigger pad on the side opposite the load to lift more than 1.6 mm from the ground reference plane. 4.Special Requirements 4.1Stability limitations are not applicable under loads based on structural compe
18、tence. 4.2Stability Criteria 4.2.1Design stability is the measure of a machines resistance to overturning under rigidly controlled conditions that include consideration for dynamic factors encountered in normal application and operation. Factors that may influence stability include, mass, mass distr
19、ibution, wheelbase, method of suspension, the deflection resulting from load mass and the orientation on a slope. 4.2.2Static stability shall be determined by; a.Tilting Performance TestsThe tests described for the specific type verify truck stability. Ref. tilt table procedure for measuring the sta
20、tic rollover threshold for heavy trucks SAE J2180. 4.2.3MAXIMUM GRADIENT RATING a.For those sweepers that can, or must be moved with the hopper in the raised position the following shall apply; The gradient rating in degrees shall be with a rated capacity load in the hopper, with the hopper fully ra
21、ised and with the sweeper traveling at the maximum speed possible. In this condition the application of brake or propel controls shall not cause any tire of the sweeper to lose contact with the ground reference plane. The test shall be conducted in both forward and reverse directions. Copyright SAE
22、International Provided by IHS under license with SAELicensee=Defense Supply Ctr/5913977001 Not for Resale, 12/04/2007 18:52:46 MSTNo reproduction or networking permitted without license from IHS -,-,- SAE J2473 Reaffirmed NOV2007 -5- b.For those sweepers not designed to move during hopper discharge
23、the following shall apply; The gradient rating in degrees shall be with a rated capacity load in the hopper and fully raised over the tipping line, the machine shall additionally be positioned on the incline, facing in a direction where stability is in the worst condition. In this condition no tire
24、or outrigger shall lift clear of the ground reference plane by more than 1.6 mm. PREPARED BY THE SAE MACHINERY TECHNICAL COMMITTEE MTC-SC2 SWEEPER, CLEANER, AND MACHINERY OF THE SAE CONSTRUCTION, AGRICULTURAL, AND OFF-ROAD MACHINERY COUNCIL Copyright SAE International Provided by IHS under license w
25、ith SAELicensee=Defense Supply Ctr/5913977001 Not for Resale, 12/04/2007 18:52:46 MSTNo reproduction or networking permitted without license from IHS -,-,- SAE J2473 Reaffirmed NOV2007 RationaleThere are no existing standards for stability while dumping hoppers of self-propelled sweepers and scrubbe
26、rs. Manufacturers of these products have historically reviewed standards of other vehicles and applied criteria for stability as deemed appropriate. This SAE Standard proposes stability requirements as would be applied to machines described in SAE J2130. Relationship of SAE Standard to ISO StandardN
27、one applicable. ApplicationThis SAE Standard applies to stability requirements during hopper discharge when applied to self-propelled sweepers and scrubbers. Reference Section SAE J2130Self-Propelled Sweepers SAE J2180A Tilt-Table Procedure for Measuring the Static Rollover Threshold for Heavy Truck
28、s SAE J765 OCT90Crane Load Stability Test Code ASME B56.1-1993Safety Standard for Low Lift and High Lift Trucks Developed by the SAE Machinery Technical Committee MTC-SC2Sweeper, Cleaner, and Machinery Sponsored by the SAE Construction, Agricultural, and Off-Road Machinery Council Copyright SAE International Provided by IHS under license with SAELicensee=Defense Supply Ctr/5913977001 Not for Resale, 12/04/2007 18:52:46 MSTNo reproduction or networking permitted without license from IHS -,-,-