Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
  • B62D25/08—Front or rear portions
  • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
  • B62D25/12—Parts or details thereof
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
  • B62D25/08—Front or rear portions
  • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D55/00—Endless track vehicles
  • B62D55/06—Endless track vehicles with tracks without ground wheels

Definitions

• This invention relates generally to a hood assembly for the engine enclosure ⁇ f a vehicle and more particularly to a stress-free mounting arrangement for the hood assembly which permits limited fore and aft and cushioned upward movement of a forward end of the hood assembly relative to the enclosure during vehicle operation.
• the hood assembly for the engine enclosure of a construction vehicle is rigidly secured in place on the enclosure.
• a rearward end of the hood assembly is normally bolted directly to a support assembly for a radiator whereas a ' iorward end of the hood assembly is normally bolted to a bracket, integrally secured to a main frame of the vehicle.
• the hood assembly has a muffler assembly and a pre-cleaner assembly secured thereon which tend to aggravate bending stresses imposed on the hood assembly during operation of the vehicle. Such bending stresses subject the mounting points of the hood assembly to potential damage and failure.
• the present invention is directed to overcoming one or more of the problems as set forth above.
• a construction vehicle has a frame, an engine enclosure, a hood assembly mounted on the engine enclosure, and first mounting means for fixedly securing a first end of the hood assembly on the engine enclosure.
• the improvement therein comprises second mounting means for attaching an opposite, second end of the hood assembly on the engine enclosure to permit limited fore and aft and cushioned upward vertical movement of the second end of the hood assembly relative to the engine enclosure.
• the weight of the hood assembly including any pre-cleaner and muffler assembly attached thereon, is fully supported on the structural members of the hood assembly while yet providing a stress-relieved attachment of the second end of the hood assembly to the engine enclosure to prolong the service life of the component parts thereof.
• Figure 1 is a side elevational view of a track-type loader embodying the present invention
• Figure 2 is a top plan and partially sectioned view of a hood assembly mounted on an engine enclosure of the loader;
• Figure 3 is a side elevational view of the hood assembly and engine enclosure, taken in the direction of arrows III-III in Figure 2 and with portions thereof broken-away for clarification purposes;
• Figure 4 is a rear elevational view of the hood assembly and engine enclosure, taken in the direction of arrows IV-IV in Figure 2 and with portions thereof broken-away for clarification purposes;
• Figure 5 is an enlarged sectional view, taken in the direction of arrows V-V in Figure 2, illustrating a resilient fastener employed in a mounting arrangement for the hood assembly;
• Figure 6 is a sectional view, through the fastener, taken in the direction of arrows VI-VI in Figure 5.
• FIG. 1 illustrates a construction vehicle
• a track-type loader 10 in the form of a track-type loader having an engine enclosure 11 mounted rearwardly on the tractor portion thereof. Access to the interior of the engine enclosure is provided by a standard door assembly 12, hingedly mounted at 13 on the engine enclosure. Referring to Figures 2-4, a hood assembly 14 is mounted in covering relationship on engine enclosure
• radiator support assembly 19 (the radiator is not shown) and a forwardly disposed subframe assembly 20.
• radiator support assembly 19 and subframe assembly 20 are spaced longitudinally to have hood assembly 14 secured therebetween.
• OMPI_ whereat the hood assembly is fixedly secured to frame structure 18 are subj ected to potential damage and failure with this condition being aggravated by the substantial weight and cantilevered disposition of muffler assembly 15 and pre-cleaner assembly 16 on hood assembly 14.
• this invention overcomes the above stress problem by providing a pair of laterally spaced first mounting means 21 for fixedly securing a first or rearward end 22 of hood assembly 14 on radiator support assembly 19 and second mounting means 23 for attaching an opposite, second end 24 of the hood assembly on subframe assembly 20.
• second mounting means 23 will cooperate with first mounting means 21 to permit limited fore and aft movement of second end 24 of hood assembly 14 in the direction of axis X ( Figure 2) and to further permit cushioned upward vertical movement of the second end of the hood assembly relative to the engine enclosure.
• engine enclosure as used herein may be considered to comprise the various structures of frame structure 18, including assemblies 19 and 20, which define the engine compartment and the various unnumbered covering panels secured thereon.
• each first mounting means 21 fixedly secures a structural member 25 of radiator support assembly 19, such as by a standard nut and bolt 26, to a structural member 27 of hood assembly 14.
• the nut may take the form of an internally threaded boss, welded or otherwise suitably secured to member 27.
• each second mounting means 23 may comprise a bolt 28 which extends upwardly into threaded engagement with an internally threaded boss 29, welded or otherwise suitably secured to a structural member 30 of hood assembly 14, which is secured to structural member 27 thereof.
• Boss 29 extends downwardly through an elongated slot 31, defined through a structural member 32 of subframe assembly 20, and has an elastomeric or rubber washer 33 disposed thereon.
• a first metallic washer 34 is disposed axially between a head 35 of bolt 28 and a lower end of boss 29 and an underside of washer 33, whereas a second metallic washer 36 is disposed between structural member 32 and an upper side of washer 33.
• elongated slot 31 will permit limited fore and aft movement of boss 29 and thus hood assembly 14 relative to structural member 32 of subframe assembly 20.
• OMPl IPO ounting means 23 may be adj usted in the manner described above to provide a slip-joint between the hood and subframe assemblies. Excepting minimal forces required to overcome friction between the 5 contacting metallic surfaces of members 30 and 32 and washer 36, the formed slip-joint will tend to settle in an unloaded condition to prevent undue stresses from being imposed on the hood assembly and attendant constructions.
• first mounting means 21 will ensure that rearward end 22 of hood assembly 14 will be fixedly secured to radiator support assembly 19 to prevent any relative movement therebetween.
• forward end 24 of the hood assembly will be permitted to undergo limited fore and aft movement in the direction of axis X ( Figures 2 and -6) and also undergo limited upward vertical movement under the restraint of pre-loaded elastomeric washer
• door 21 will provide a workman with ready access to both mounting means 21 and 23 for installation and servicing purposes.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Exhaust Silencers (AREA)
• Superstructure Of Vehicle (AREA)
• Body Structure For Vehicles (AREA)
• Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=22154439

Family Applications (1)

Country Status (3)

Families Citing this family (2)

Citations (4)

Family Cites Families (3)

• 1980
  • 1980-07-14 WO PCT/US1980/000883 patent/WO1982000275A1/en not_active Ceased
  • 1980-07-14 US US06/273,895 patent/US4388976A/en not_active Expired - Lifetime
• 1981
  • 1981-07-02 JP JP1981097703U patent/JPS629181Y2/ja not_active Expired

Patent Citations (4)

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