1、-1 - -= MIL-D-37bF 3 M 779970b 020756 = MIL-D-3968F 25 Febuary 1982 SUPER SE DING 25 September 1981 18 October 1979 I MIL-D-O03968E(ME) MIL-D-3968D MILITARY SPECIFICA ION PRIER-MIXERS , BITUMINOUS -CONCRETE MATERIALS , WHEEL MOUNTED This specification is approved for use by 211 Departments and Agenc
2、ies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers trailer-mounted, engine-driven drier-mixers that produce high-grade hot bituminous mixes. 1.2 Classification. The drier-mixers shall be of the following types, as specified (see 6.2): Type I - Separate drier drum and pug
3、mill. Type II - Combination drying and mixing chamber. 2. APPLICABLE DOCUMENTS 2; 1 Government documents. 2.1.1 Specifications and standards. Unless otherwise specified (see 6.2), the following specifications and standards of the issue listed in that issue of the Department of Defense Index of Speci
4、fications and Standards (DoDISS) specified in the solicitation, form a part of this specification to the extent specified herein. comments (recommendations, additions, deletions) and any pertinent may be of use in improving this document should be addressed to: US Army Mob ility Equipment Research a
5、nd Development Command , ATTN: DRDME-DS , Fort Belvoir, VA 22060 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. I FSC 3895 A Provided by IHSNot for ResaleNo reproduction or networking permitted without lice
6、nse from IHS-,-,-MIL-D-3968F SPECIFICATIONS FEDERAL FF-E-171 FF-B-185 FF-B-187 QQ-S-7 81 TT-P -6 64 UU-T-EI1 VV-F-800 VV-G- 169 O PPP-B-601 PPP-B- 1055 PPP-P-40 P PP-T-60 MILITARY MIL-P-116 MIL-E- 12 1 MIL-V - 1 7 3 MIL-P -5.14 MIL-L-2104 MIL-F -3 5 41 MIL-G-3859 MIL-E-100 62 MIL-G-10924 MI L-C-13 4
7、86 MIL-C-13486/12 MIL-L-2 12 6 O - Bearings, Ball, Annular (General Purpose). - Bearings, Roller, Cylindrical; and Bearings, Roller, Self-Aligning. - Bearing, Roller, Tapered. - Strapping, Steel, Flat and Seals. - Primer Coating, Synethetic, Rust-Inhibiting, % La cquer-Res is t ing . - Tags, Shippin
8、g and Stock. - Fuel Oil, Diesel. .I - Gasoline, Automotive, Leaded or Unleaded. - Boxes, Wood , C1 ea ted-Plywood. - Barrier Material,Waterproofed, - Packaging and Packing of Hand Tools. - Tape: Packaging, Waterproof. F1 exib 1 e . . - Preservation, Methods of. - Barrier Material, Greaseproofed, Wat
9、er- proofed, Flexible, - Varnish, Moisture-and-Fungus-Res istant , (For Treatment of Communications, Electronic, and Associated Equipment). - Plates , Identification, Instruction and Marking, Blank. - Lubricating Oil, Internal Combustion Engine, Tactical Service - Fittings, Lubrication. - Grease Gun
10、s, Hand, High Pressure, Lever-Operated; Cartridge and Bulk Loading (14 Ounce and 21 Ounce Cap- acity) . - Engines: Storage of. - Grease, Automotive and Artillery. - Cable, Special Purpose, Electrical: Low-Tension, 30-VoltY Heavy Duty, Sing1 e- Conduc tor and Mu1 t iconduc tor . - Cable, Special Purp
11、ose , Electrical , Lov Tension, Heavy Duty Multiple Conductor; Uns h ie 1 ded. - Lubricating Oil, Internal-Combustion Engine, Preservative and Break-Inr Preparation for Shipment and 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-t - MIL-D-3768F 38
12、 a 7777906 0207570 6 a MIL-G-23827 MIL-A-4 6153 MIL- B-5 2 9 19 MIL-E-52929 STANDARDS FEDERAL . FE D- ST D- H2 8 MILITP RY MIL-STD-1 O 5 MIL- STD- 129 MIL - STD- 1 30 MIL-STD-281 . MIL- - STD- 14 7 4 MS3 i000 MS311643 MS3 i644 MS3 j645 MS3 i 844 MS7 j0 20 MIL-D-3-9 68F - Grease, Aircraft and Instrum
13、ent, Gear - Antifreeze, Ethylene Glycol, Inhibited, - Belts, V. Industrial Drive, Narrow Type - Enamel, Alkyd, Camouflage, Flash Dry, and Actuator Screw. Heavy Duty, Single Package. - Screw-Thread Standards for Federal Services. - Sampling Procedures and Tables for Inspection by Attributes. - Markin
14、g for Shipment and Storage. - Identification Marking of US Military Property. - Slinging and Tiedown Provisions for Lifting and Tying Down Military Equip ment. Trailers and Trailer Dollies; Preservation and Packaging of. - Automobiles, Trucks, Truck-Tractors, - Noise Limits for Army Materiel. - Batt
15、ery , Storage, Lead-Acid, Waterproof. - Gasket: Cap, Fuel Tank. - Filler Neck Assembly, Fuel Tank- - Cap, Fuel Tank-Tactical Vehicle, Fording. - Plug, Machine Thread, Magnetic: Drain. - Connector, Plug, Electrical - 12 Contact, Intervehicular 28-Vo1tY Waterproof. Military Vehicles. (Copies of specif
16、ications and standards required by contractor in connection with specific procurement functions should be obtained from the procuring activity tir as directed by the contracting officer. ) 2.2 Other publications. The following documents form a part of this n specifications to the extent specified he
17、rein. Unless otherwise indicated, the issue in 2ffect on date of invitation for bids or request for proposal shall apply* SOCIETY OF AUTOMOTIVE ENGINEERS ( WE) SAE Handbook. (Application for copies should be addressed to the Society of Automotive Engineers , 400 Commonwealth Drive, Warrendale, PA 15
18、096. ) o Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MrGD-37bF 38 997770b 0209573 -= MIL-D-3 9 68F DEPARTMENT OF TRANSPORTATION (DOT) Federal Motor Carrier Safety Regulations. Federal Motor Vehicle Safety Standards, (Application for copies should
19、 be addressed to the US Department of Transportation, Superintendent of Documents, Government Printing Office, Washington, D ,C, 20402. SOUTHERN CALIFORNIA AIR POLLUTION CONTROL DISTRICT Rule 102 Photochemically Reactive Solvents (Application for copies should be addressed to the Southern California
20、 Air Pollution Control Distr.ict, 434 South San Pedro Street, Los Angeles, CA 90013.) TRUCK-TRAIWR MANUFACTURERS ASSOCIATION, INC. (TTMA) TTMA Recoimnanded Practices. TTMA Technical Bulletins (Application for copies should be addressed to the Truck-Trailer Manufacturers Association, Inc, Suite 203,
21、2430 Pennsylvania Ave, N.W. Washington, D.C, 2200370 NATIONAL MOTOR FREIGHT TRAFFIC CLASSIFICATION (Application for copies should be addressed to the American Trucking Associations, Inc., ATTN: Tariff Department, 1616 P Street, NW, Washington, D.C. 20036.) TIRE AND RIM ASSOGIATION, INC. T with all t
22、anks full; and with complete complement of fuel, coolant, and lubricants. Component and vehicular ratings shall not be raised to conform to the requirements of this specification. The physical characteristics of each unit, prepared for transport, shall be as specified in table I-, with the drier-mix
23、er on level ground and with the inflation pressure of the tires as recommended in the Tire and Rim Association Yearbook for the imposed GVW loading. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-3968F Initital surf ace mositure content, Perce
24、nt TABLE I. Weights and dimensions Continuous output capacity, minimum tons/hr Characteristic I Reauirement 3 GVW Vertical towbar load, range Overall length Overall width Overall height: (shipping) Ground clearance, exclusive of Towbar eye height range (CAE 5849) suspension 8 11,000 lbs maximum 5 to
25、 12 percent of GVW 260 inches, maxinnim 96 inches, maximum 102 inches, maximum 14 inches, minimum 27 thru 33 inches 3.1.2 Performance. The drier-mixer shall dry and mix sand, gravel or crushed stone with an 85 to 100 penetration grade asphaltic material. Operating at continuous production, the minim
26、un output capacity of the drier-mixer for hot bituminous mi.xes when tested as specified (see 4.5.2.7), shall be as shown in table 11. For other bituminous mixes, the capacity of the drier-mixer shall be not less than 10 tons per hour (see 4.5.2.7.2). Prior to mixing with bitumen, the residual surfa
27、ce moisture of the aggregate shall be not more than 1 percent by weight (hot mix), The temperature of the aggregate at the end of rhe drying cycle or at drier discharge shall be not more than 325“ F, and not less than 275 F. (hot mix). . TABLE II. Hot bituminous mix output. 3.1.3 Compatibility, The
28、drier-mixer shall be compatible for rowing behind a 5 ton, military design dump truck or equal and shall operate in conjunction with the dump truck (in towing position) so that the aggregate can be shoveled into the charging hopper from the dump truck. contractor a dump truck (see 6.3). The Governme
29、nt will loan the b 3.2 First article (preproduction model). Unless otherwise specified (see 6.21, the contractor shall furnish one r more drier-mixers for examination and testing within the time frame specified (see .6.2), to prove prim to starting production that his production methods and choice o
30、f design detail will produce drier-mixers that comply with the requirements of this specification. Examination and tests shall be a6 specified in Section 4 aiid unless otherwise specified herein, all examinations and tests ahall be condlicted by the 6 Provided by IHSNot for ResaleNo reproduction or
31、networking permitted without license from IHS-,-,-MIL-D-3768F 38 9979706 0207574 3 MIL-D-3968F contractor subject to surveillance and approval by the Government (see 6.4). When specified (see 6.21, the Government will conduct any or all of the preproduction examination and tests, as specified (see 6
32、.2). 3.3 Production drier-mixers. All drier-mixers furnished under this specification shall be physically and mechanically identical to the first article drier-mixer approved by the Government (see 6.ib). 3.4 Material. Material shall be as speified hereili. Material not specified shall be selected b
33、y the contractor and shall be subject to all pr-)visions of this specification (see 6.8). Materials and special tzeatments utilized shall provide resistance to rust and corrosion. 3.5 Safety and human factors. 3.5.1 Safety. All rotating or reciprocating parts, and all parrs subject to high operation
34、al temperature that are of such nature o: are so loc.ited as to be, or become, a hazard to operating or maintenance personiel shall be guarded or insulated to the extent necessary to eliminate the hazsird. steps, and ladder rungs shall have antiskid surfaces. All exhausts shall be directed so as not
35、 to endanger personnel or obstruct the view of the operator. Fuel tanks shall be located in a manner which will not allow spills and overflows to run onto the engine, exhaust, aggregate drier, or e1e:trical equipment. Electrical equipment shall be insulated, f:illy enclosed, or guarded. more than tw
36、o full threads of fastening devices shall ,e avoided. All pl.3tformsY Nonfunctional sharp edges, projecting points and protruding length 3.5.2 Human factors. The characteristics of the dr ier-mixer shall provide for operation by personnel ranging from the small man Zlothed, through the large man clo
37、thed in accordance with SAE 5833. 3.5.3. Noise level. 3.5.3.1 Exterior noise. The exterior sound level of the drier nixer shall not exceed 88dB(A) when measured in accordance with SAI: 588. 3.5.3.2 Personnel noise, The sound level at the operators position shall not exceed 85dB(A) as specified for C
38、ategory D in MIL-STD-1474. It shall be tested in accordance with 4.5.2.11.2. 3.6 Maintenance 3.6.1 Maintainability. All major assemblies and installed attacnments shall be accessible for maintenance, repair, and replacement with minimum removal of other major assemblies and installed attachments. Co
39、vers or plates which must be removed for component adjustment or maintenance shall be equipped with quick-disconnect fastenings. Drain outlets shall be aicessible. Ease of maintenance provisions shall incorporate features insuring operating clearances for handtools and lubricating equipment, and the
40、 accessibility for service operations such as adding oil to the engine crankcase and adding oil to gear Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-D-34bF 38 = 9999906 0209575 5 MIL-D-3968F cases. Each maintenance, assembly, or disassembly o
41、peration required during testing in accordance with 4.3 shall be accomplished by no more than two men (except a hoist and operator may be used as necessary) using special tools furnished with the drier-mixer and common tools. After completion of any maintenance operation, the drier-mixer shall opera
42、te as specified herein, 3.6.2 Interchangeability. All parts having the same part number shall be functionally and dimensionally interchangeable. Common hardware and fastening devices such as bolts, nuts, screws, and washers shall be held to a minimum number of types and sizes. All screw threads shal
43、l be in accordance with FED-STD-H2 8. 3.7 Trailer. The drier-mixer shall be mounted on a pneumatic-tired, 2-wheel cart-type trailer chassi that will provide on-highway .and secondary road mobility specified as fo:lows when towed by the dump truck specified in 3.1.3. 3.7.1 Mobility. The c!rier-mixer
44、shall perform as specified when: (1) equipped with all attachrients, equipment, and accessories stowed for travel and with all tanks filled to capacity; (2) towed over highways, and secondary roads. 3.71.1 Highway travel. The drier-mixer shall travel over smooth, hard surfaced, primary highwa!rat su
45、stained speeds up to 55 miles per hour (mph) without failure or permanent deformation. 3.7.1.2 Secondary road travel, The drier-mixer shall travel over gravel and improved roads at speeds up to 25 mph without failure or permanent deformation. 3.7.2 Trailing and turning ability. The drier-mixer shall
46、 trail the towing vehicle without bottoming, cramping, weaving, or sidesway. The drier-mixer shall follow the truck w:.thout exceeding the tracking deviation, as specified in DOT Federal Motor Carrie-: Safety Regulations, 393.70, when towed over a paved surface. JacEknife turns of at least 60 degree
47、s, as measured from straight ahead to the right and to the Left, shall not cause damage to or interference between the truck anc. drier-mixe- 3.7.3 - Frarie. The fra-ne shall be of sufficient strength and-rigidicy to support and connect all components, maintain alinement, and distribute. the stress
48、of the suspension mounts in order to meet the transport and operating conditions specified heriiin. 3.7.4 Suspension. The drier-mixer shall be equipped with a spring, single axle suspension system, :ailored to the drier-mixer. The suspension manufacturers rated capacity shall be equal to, or greater
49、 than the load imposed on each member with the drier-mixer loaded to maximum GVW, When tested as specified in 4.5.2.2, the suspension shall provide a nondamaging ride on graveled-surfaced secondary roads and a stable ride on paved highways. The installation of the suspension shall be in correct alinement with the frame and with the axle so that the two diagonal measurements from the center of the lunette to the outer center of each
