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 there
2、from, 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 2014 SAE International All rights reserved. No part of this p
3、ublication 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: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.orgSAE 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/ARP5548AEROSPACERECOMMENDED PRACTICEARP5548 Issued 2014-09 Multi-Tasking Equipment
5、 (MTE) for Airfield Snow Removal High Speed, Multi-Tasking Snow Removal Unit to include Carrier Vehicle, Snow Plow, Rotary Broom High Velocity Air Blast RATIONALE This aerospace recommended practice (ARP) serves as a guideline for airports that require specialized multi-tasking equipment to meet the
6、 snow and ice removal demands as required in their airports published snow plan and by the FAA in AC 150/5220-30A. TABLE OF CONTENTS 1. SCOPE 42. REFERENCES 42.1 Applicable Documents 42.2 Definitions . 53. INTENT . 114. TECHNICAL REQUIREMENTS 114.1 General Description 114.2 Minimum Performance Requi
7、rements 164.3 Test Procedures and Airport/Contractor Obligations 174.4 Approvals 185. CARRIER VEHICLE 185.1 Carrier Vehicle Description . 185.2 Chassis . 205.3 Engines . 215.4 Drive Train . 245.5 Brake System 255.6 Steering . 265.7 Suspension . 275.8 Tires and Wheels 275.9 Hydraulic System 285.10 Ch
8、assis Lubrication and Fluids . 295.11 Electrical System . 305.12 Exterior Lighting 315.13 Cold Starting Aids . 325.14 Pneumatic System 335.15 Operators Cab 33SAE INTERNATIONAL ARP5548 Page 2 of 56 5.16 Operator Control Station (OCS) 355.17 Attachment Controls 386. ADDITIONAL ITEMS AS REQUIRED . 386.
9、1 Infrared Camera/Display System 386.2 Backup Camera 387. HIGH SPEED, POWER REVERSIBLE, SNOWPLOW AND HITCH 397.1 General Description 397.2 Moldboard Assembly . 397.3 Cutting Edge Reinforcement . 407.4 Moldboard Attack Angle Adjustment . 407.5 Cutting Edge . 407.6 Plow Hitch . 407.7 Spray Guard 417.8
10、 Shock/Impact Absorbers . 417.9 Reversing Mechanism . 417.10 Caster Wheel Assemblies . 417.11 Hydraulic System and Control 427.12 Support Stands . 427.13 Warning Labels . 428. ROTARY BROOM AND AIR BLAST SPECIFICATIONS . 428.1 General . 428.2 Mount Configurations 428.3 Rotary Broom Classification and
11、 Performance Criteria 438.4 Broom Chassis Assembly . 508.5 Broom Cores . 528.6 Broom Bristles . 538.7 Forced Air Blast . 548.8 Broom Hydraulic System. 548.9 Operator Control Station . 548.10 Electrical System . 558.11 Controls and Instrumentation 558.12 Diagnostic Capabilities 559. FINISH AND PAINT
12、5510. TECHNICAL PUBLICATIONS 5511. DELIVERY, START-UP AND TRAINING . 5512. WARRANTY 5613. REPORTS AND DOCUMENTATION . 5613.1 Engine Performance . 5613.2 Alignment 5613.3 Main Component List 5614. NOTES 56FIGURE 1 MODULAR MTE CAB FORWARD MID-ENGINE POWER UNIT WITH TOW BROOM 12FIGURE 2 MODULAR MTE CON
13、VENTIONAL CAB POWER UNIT WITH TOW BROOM . 12FIGURE 3 MODULAR MTE CABOVER ENGINE POWER UNIT WITH TOW BROOM . 13FIGURE 4 MODULAR MTE CONVENTIONAL CAB POWER UNIT WITH TOW BROOM . 13FIGURE 5 INTEGRAL NON-ARTICULATING MTE . 14FIGURE 6 INTEGRAL NON-ARTICULATING MTE . 14FIGURE 7 INTEGRAL ARTICULATING MTE W
14、ITH STEERABLE FRONT AXLE AND ARTICULATED FRAME STEERING 15FIGURE 8 INTEGRAL ARTICULATING MTE ON ARTICULATED OFF ROAD TRUCK CHASSIS . 15SAE INTERNATIONAL ARP5548 Page 3 of 56 FIGURE 9 BRUSH SWEPT PATH COMPARISON . 43FIGURE 10 THEORETICAL TONS PER HOUR AND SURFACE AREA SWEPT RATE . 46FIGURE 11 TYPICAL
15、 PERFORMANCE CRITERIA FOR MTE AND TOW BEHIND BROOMS: 47TABLE 1 16SAE INTERNATIONAL ARP5548 Page 4 of 56 1. SCOPE This equipment specification covers requirements for Multi-Tasking Equipment (MTE) for airfield snow removal purposes. The unit shall include a combination of a carrier vehicle, snow plow
16、, rotary broom and high velocity air blast system. This vehicle as a unit shall be an integrated snow plow, rotary broom and high velocity air blast. Primary application is for the high-speed plowing, sweeping and cleaning of ice and snow from airfield operational areas such as runways, taxiways and
17、 ramp aprons. The term carrier vehicle represents the various self-propelled prime movers that provide the motive power necessary to move snow and ice control equipment during winter operations. The airport operator may require this specified piece of equipment in order to maintain the airfield duri
18、ng large and small snow events. When necessary, the MTE shall be a central and critical element in the winter pavement maintenance fleet in the effort to accomplish the airports published snow plan. This ARP defines the minimum functionality for a vehicle to be classified as an MTE, specifically as
19、an integrated snow and ice removal system capable of performing multiple and simultaneous functions requiring no more than one operator. MTEs may be utilized to perform additional pavement maintenance tasks such as de-ice or anti-ice, rubber removal, FOD sweeping, or others. If additional features a
20、re required, they must be defined by the airport operator as part of their MTE specification. The airport operator may add to or delete from any item of this specification to meet its requirements providingthere is no compromise in safety. 2. REFERENCES 2.1 Applicable Documents The following publica
21、tions form a part of this document to the extent specified herein. The latest issue of SAE publications shall apply. The applicable issue of other publications shall be the issue in effect on the date of the purchase order. In the event of conflict between the text of this document and references ci
22、ted herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-60
23、6-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.SAE J931 Hydraulic Fluid Power Circuit Filtration - Application and when specified, other materials such as sand, snow and ice control chemicals, debris, rubber residue, and other materials from airport runway, taxiway, and ra
24、mp areas and associated pavements by using a brush with bristles to clean the surfaces. AIR BLAST: A device for developing and directing a continuous stream of forced air ahead or behind the brush for moving snow and debris. AUXILIARY EQUIPMENT: Any equipment, in addition to the basic chassis that i
25、s required for a piece of equipment/vehicle to perform its functions. For example, a winch would be auxiliary equipment for a tow truck. AXLE CAPACITY: The allowable weight load on an axle based on supportive engineering data and the best judgment of the manufacturer of the axle. AXLE RATIO: The num
26、erical ratio of the drive shaft speed to the speed of the axle. The numerical ratio equals the torque multiplication factor of the axle. AXLE, DEAD: A means of support for the wheels at each end that is non-driven. AXLE, LIVE: A means of support for the wheels at each end that is driven. BROOM: A co
27、mplete operating unit. A broom contains a brush with bristles that sweep. BROOM CAPACITY RATING: The amount of snow moved per unit of time, normally in tons per hour, resulting in an acceptable surface condition. BRUSH CORE: The center rotating structure which supports the bristles. BRUSH HEAD: The
28、portion of the runway broom which supports and carries the bristle and its core. BRUSH HOOD COVER: A cover for the top half of the brush. BRUSH: The rotating cylinder of many bristles BRUSH ANGLING SYSTEM: The capability of angling or rotating the brush head to allow the discharge of snow to the lef
29、t or right of the carrier vehicle when moving in a forward direction. The angle is changed from the operators position in the cab by use of a system such as hydraulic rams, hydraulic or electric motors, or other devices or mechanisms. BRUSH ELEVATION MECHANISM: A device for raising and lowering the
30、brush. The height is changed from the operators position in the cab by use of a system such as hydraulic rams, hydraulic or electric motors, or other devices or mechanisms. SAE INTERNATIONAL ARP5548 Page 6 of 56 BRUSH PATTERN: The width, perpendicular to the brush core, of the area the rotating brus
31、h contacts with the surface in the down position. BRUSH PATTERN ADJUSTING SYSTEM: A system for adjusting the pattern of the brush. CAB: An enclosed area on a vehicle designed and intended to hold and carry an operator. CAB CONVENTIONAL: A cab mounted just behind the drive engine for the chassis. CAB
32、 FORWARD: A cab mounted to the most forward position on the chassis. CAB-OVER ATTACHMENT: A cab mounted over the front attachment. CAB-OVER ENGINE: A cab mounted over the front mounted engine. CAN BUS: Controller Area Network, a specialized internal communications network, interconnecting components
33、 inside a vehicle, utilizing a standard communication protocol. Interconnecting components include but are not limited to information processors for engines, transmissions, antilock brakes, lighting systems, body controllers, attachment controls and the related sensors, servos and user interfaces. C
34、ARRIER VEHICLE: The prime mover to which a rotary snowplow, runway broom, or displacement plow is attached or any vehicle designed and purchased for the purpose of transporting any working snow head. CASTER ASSEMBLIES: Wheels, generally of small size, with the ability to swivel and their attachment
35、mechanism(s) to the plow or rotary broom. The wheels ride along the pavement and may support some of the weight of the plow or broom and/or may provide a method of adjusting the clearance between the bottom of the cutting edge or brush and the pavement. Each caster assembly can be of the single or d
36、ual wheel type. Caster wheel assemblies may be equipped with pneumatic, foam filled or solid rubber tires. Caster tire and wheel assemblies shall be approved and rated for the speeds and loads they will encounter during use. CASTING DISTANCE: The distance the snow moves left or right measured perpen
37、dicular to the vehicle travel from the broom end, to the center of the area of most concentrated snow cast observed during casting. CENTER DRIVE BROOM: Brush driven from the center position of the brush head. CERTIFICATION/APPLICATION APPROVAL: Confirmation by a manufacturer or qualified expert that
38、 the unit or component fulfills the requirement of the application. CERTIFIED PERFORMANCE: Written confirmation of the ability of a unit or component to performance as specified based on calculations or testing. COEFFICIENT OF FRICTION: A unitless number that represents the resistance of sliding of
39、two surfaces in contact with each other. These values should be between 0 and 1. Higher values indicate more resistance to sliding. Refer to Swept Surface Condition. CONFIGURATION: The functional arrangement of parts or components assembled to make a working machine or apparatus. CURBSIDE: The right
40、 side of the vehicle when viewed from the rear. Opposite side from road side. CURB WEIGHT: The weight of the carrier vehicle with all factory installed and auxiliary equipment, in the travel position, fullfuel tank(s) and a nominal 180 pound operator. CUTTING EDGE: The portion of the plow that conta
41、cts and/or scrapes the pavement surface, traditionally available, but not limited to, steel, rubber, polyethylene, with or without tungsten carbide inserts. SAE INTERNATIONAL ARP5548 Page 7 of 56 CUTTING EDGE REINFORCEMENT: Supports the cutting edge and prevents damage to moldboard upon impact at cu
42、tting edge. “DE-CEL“ TYPE CYLINDER: A type of hydraulic cylinder designed to automatically control the speed of function as the cylinder reaches a certain point in its stroke. DEFLECTOR (BRUSH): A device mounted on the front of the brush hood to allow the operator to direct the snow casting. The def
43、lector position is changed from the operators position in the cab by use of a system such as hydraulic rams, hydraulic or electric motors, or other devices or mechanisms. DELUGE SYSTEM: A means of providing large amounts of fluid through high flow directional spray nozzles to windshield(s), side and
44、 rear window(s), mirror(s), and other surfaces to improve operational visibility from the cab. DIFFERENTIAL: The gear assembly in the drive axle that permits one wheel to turn slower or faster than the other when negotiating a turn. The gear assembly in the transfer case that allows the front drive-
45、shaft to turn slower or faster than the other when negotiating a turn. DIFFERENTIAL, AUTOMATIC LOCKING: The gear assembly in the transfer case that allows the front drive-shaft to turn slower or faster than the rear prop-shaft when negotiating a turn while providing maximum driving torque to both th
46、e front and rear axles. The gear assembly on the drive axle that permits one wheel to turn slower or faster than the other when negotiating a turn while providing maximum driving torque to both wheels. Automatic locking differentials provide positive drive to both driven members while not requiring
47、operator input or control. DIFFERENTIAL, MANUAL LOCKING (BEVEL GEAR): The gear assembly on the drive axle that permits one wheel to turn slower or faster than the other when negotiating a turn. An operator controlled provision may be offered to fully lock and unlock the differential action from the
48、cab. DIMENSIONS: AE Centerline of rear axle/tandem to the end of frame BA Bumper to centerline of Front axle BBC Bumper to back of Cab CA Back of Cab to centerline of rear axle CE Back of cab to end of the frame (AE + CA = CE) FH Frame height from the ground to the top of frame OAL Overall Length WB Wheelbase OAH Ground to top of highest point on the unit DRIVE FRAME: Portion of plow support structure that attaches to the moldboard to the hitch. END DRIVE B
