1、SURFACE VEHICLE STANDARD J1791 JAN2015 Issued 2002-08 Revised 2015-01 Superseding J1791 APR2007 Self-Propelled Sweepers and Scrubbers Dual Position Driving Controls and Displays RATIONALE The document has been revised to update the referenced documents. 1. SCOPE This SAE standard applies to self-pro
2、pelled driver operated sweepers and scrubbers as defined in SAE J2130-1. 1.1 Purpose The purpose of this document is to establish the basic requirements associated with controls and displays for dual position driving controls as depicted in a typical installation shown in Figure 1. The control layou
3、t illustrated being of a conventional installation as associated with a normal on-road vehicle having a steering wheel to steer the machine and foot pedals to control the speed and braking functions. The document elaborates the requirements for an originally built machine with two driving positions
4、but also where a proprietary commercial truck chassis is converted from a single driving position, it also advises recommendations in design, construction and safety related elements. In the case where National Regulations pertain to the design and performance of driving control systems as depicted,
5、 then these regulations take precedent over the recommendations in this document. _ 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 s
6、uitability for any particular use, including any patent infringement arising therefrom, 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 su
7、ggestions. Copyright 2015 SAE International All rights reserved. No part of this 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 PLA
8、CE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (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:/www.sae.org/technical/standards
9、/J1791_201501 SAE INTERNATIONAL J1791 Revised JAN2015 Page 2 of 6 FIGURE 1 - TYPICAL LAYOUT OF SYSTEM 2. REFERENCES 2.1 Applicable Documents The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest issue of SAE publications s
10、hall apply. 2.1.1 SAE Publications Available from SAE International, 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 J287 Driver Hand Control Reach SAE J680 Location and Operation of Instruments and Controls
11、 in Motor Truck Cabs SAE J898 Control Locations for Off-Road Work Machines SAE J1050 Describing and Measuring the Drivers Field of View SAE J1517 Driver Selected Seat Position for Class B Vehicles - Seat Track Length and SgRP SAE J2130-1 Identification of Self-Propelled Sweepers and Cleaning Equipme
12、nt Part 1 - Machines with a Gross Vehicle Mass Greater than 5000 kg SAE INTERNATIONAL J1791 Revised JAN2015 Page 3 of 6 2.2 Related Publication The following publications are provided for information purposes only and are not a required part of this SAE Technical Report. 2.2.1 SAE Publication Availa
13、ble from SAE International, 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 J1521 Truck Driver Shift-Knee Position for Clutch and Accelerator 3. DEFINITIONS 3.1 PRIMARY CONTROLS Are the controls principally
14、used to operate, control and drive the machine safely, these include: 3.1.1 Service Brake A system to arrest, hold and bring the machine to a stop. Actuation is by a foot pedal control located in the normal position for an automotive application. The service brake can be pneumatic, hydraulic or hydr
15、ostatically operated or a combination of systems. 3.1.2 Accelerator A system to regulate either or both the engine speed and the machines ground speed. 3.1.3 Steering System A system that controls the direction of the machine by means of a steering wheel and associated linkage, with or without power
16、 assistance. 3.1.4 Clutch A system for disconnecting the engine from the drivetrain. 3.2 SECONDARY CONTROLS, DISPLAYS, AND SYSTEMS Are controls and systems that are operated or observed intermittently in order to conduct specific functions during the control of the machine, these include: 3.2.1 Park
17、ing Brake A system to prevent the machine from moving when unattended. 3.2.2 Gear Shift A system to engage or disengage a train of gears or other propulsion transmission 3.2.3 Speedometer A device to visually indicate the machines ground speed. 3.2.4 Displays and Symbols a. Displays: a system for in
18、dicating the operational status of the machines vehicular functions and systems. b. Symbols: a method of identifying a control device and its function. SAE INTERNATIONAL J1791 Revised JAN2015 Page 4 of 6 3.2.5 Lighting Control Control system for the operation of all mandatory lamps. 3.2.6 Turn Indic
19、ator A device to control an external visual indicator to show the drivers intention to turn. 3.2.7 Rearview Mirrors System to enable the operator to observe rearwards. 3.2.8 Wiper System Mechanism for cleaning the windscreen of rain, snow, mist, etc. 3.2.9 Horn Audible warning device operated by the
20、 driver to warn of presence to others in hearing range. 3.3 COMPONENTS 3.3.1 Locking Fastener Screw fasteners and similar components that embody a torque prevailing friction element used to join, attach and secure machine components. 3.3.2 Cables Flexible mechanical linkages contained in a routing c
21、onduit. 3.3.3 Brake Control Valves Components used to regulate the braking forces in a braking system. 3.3.4 Mirrors Components displaying a reflected mirrored visual image. 4. TECHNICAL REQUIREMENTS 4.1 Control Layout, Construction, and Safety Requirements 4.1.1 Driver seating position and foot ped
22、al arrangements shall observe the requirements of - SAE J1517, SAE J898. 4.1.2 Driver hand control reach shall observe the requirements of - SAE J287, SAE J898. 4.1.3 Location of all controls and displays shall observe the requirements of - SAE J898, SAE J680. 4.1.4 Location of mirrors shall observe
23、 the requirements of SAE J1050. 4.2 Control System Functionality 4.2.1 All primary controls, shall be duplicated for both driving positions and function at all times, although in the case of duplicated power steering systems and electronic accelerator pedals, it is permissible to disable the redunda
24、nt driving position. SAE INTERNATIONAL J1791 Revised JAN2015 Page 5 of 6 4.2.2 All secondary controls and displays, may be of an un-duplicated format. But, where the requirements of 4.1 are breached, requiring an unnatural driving posture to operate a control or observe a display, then the system sh
25、all be duplicated for both left and right hand driving positions. 4.2.3 Slave and Mechanical Systems 4.2.3.1 The steering system shall utilize one chassis frame-mounted steering gear controlled by two interconnected mechanical systems that provide steering control from either driving position. 4.2.3
26、.2 The braking system shall utilize one master cylinder or brake control valve with a mechanical linkage for the second driving position acting on the master control. 4.2.3.3 The accelerator system shall utilize one master control device with a mechanical linkage for the second driving position acti
27、ng on the master control. 4.2.3.4 The clutch system shall utilize one master control device with a mechanical linkage for the second driving position acting on the master control. 4.2.4 Duplicated System 4.2.4.1 The steering system shall utilize two chassis frame-mounted steering gears (manual steer
28、ing/power steering) mechanically connected through the steering linkage with steering control from either driving position. Hydraulic power assistance may be supplied though a directional control valve. 4.2.4.2 The braking system shall utilize two master cylinders or brake control valves controlled
29、from either driving position. 4.2.4.3 The accelerator system shall utilize two throttle cables/actuators controlled from either driving position. 4.2.4.4 The clutch system shall utilize two separate clutch linkages/master cylinders controlled from either driving position. 5. GENERAL REQUIREMENTS 5.1
30、 Fasteners and Components 5.1.1 Locking fasteners used in primary controls shall be discarded and replaced if removal is necessary during a vehicle conversion. 5.1.2 The use of original equipment components or their equivalents for the duplicated driving controls is recommended where a vehicle is co
31、nverted from a single driving position in order to replicate the operation and control characteristics of the original controls. 5.1.3 Fluid power systems used in duplicated power steering systems shall be of a fail-safe design. 5.2 Rearview Mirrors Any combination of rearview mirror image systems i
32、s acceptable but shall meet the requirements of SAE J1050 when operating the machine from either driving position. SAE INTERNATIONAL J1791 Revised JAN2015 Page 6 of 6 6. NOTES 6.1 Marginal Indicia A change bar (l) located in the left margin is for the convenience of the user in locating areas where
33、technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. PREPARED BY THE SAE MTC2, SWEEPER, CLEANER, AND MACHINERY COMMITTEE
