Method of forming a stress isolating joint on a dump body

Details Method of forming a stress isolating joint on a dump body Method of forming a stress isolating joint on a dump body

2003-03-27

2004-06-29

Omgba, Essama (Department: 3726)

Metal working

Method of mechanical manufacture

Shaping one-piece blank by removing material

C029S428000, C029S462000, C029S469000, C029S524000, C029S527100, C228S165000, C228S174000

Reexamination Certificate

active

06754945

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates generally to dump bodies for off-highway rubber tired haulage vehicles, such as dump trucks. More specifically, the present invention relates to a joint isolation system for reducing stress in joints between adjacent plates or other components in a dump body.
BACKGROUND OF THE INVENTION
Dump bodies for off-highway rubber tired haulage vehicles are typically constructed from a plurality of plates that have been welded together. According to common practice, dump bodies include a floor, sidewalls, and a front wall. Many times a cab protector is attached to the top edge of the front wall in order to protect the truck cab during loading operations.
According to common practice, the plates which form the bulk of the load carrying surfaces are joined, such as by welding, to adjacent plates and/or supporting frame members to form the finished dump body. In order to keep the overall weight of the dump body below a desired level, manufacturers often try to use the thinnest plates possible. However, it is known that thin, flat plates are generally not well suited for carrying loads perpendicular to their surface.
Although flat plates can be stiffened somewhat by increasing the thickness of the plates, in dump body applications merely thickening all of the plates is not a desirable option, as such an approach increases the weight of the dump body, thus lowering the hauling capacity of the haulage vehicle. Consequently, thin plates are often welded to other reinforcing supporting plates disposed at intervals, or are otherwise connected to and supported by a network of supporting frame members. The thin plates serve the goal of keeping the overall weight down, while the other reinforcing members provide the necessary strength. Two examples of typical prior art construction techniques are shown in
FIGS. 8 and 9
, both of which experience significant stress along the weld lines indicated as W
1
and W
2
in
FIG. 8
, and W
3
in FIG.
9
.
Unfortunately, according to conventional construction techniques, such joints often experience problems, such as, by way of example rather than limitation, problems with metal fatigue. This metal fatigue is often most prevalent precisely at the weld lines in the dump body.


REFERENCES:
patent: 1290091 (1919-01-01), Cole
patent: 1872616 (1932-08-01), Andren
patent: 2140672 (1938-12-01), Gray et al.
patent: 2593506 (1952-04-01), Wales
patent: 2679468 (1954-05-01), Pitman
patent: 3006443 (1961-10-01), Siler
patent: 3571552 (1971-03-01), Opal
patent: 3596043 (1971-07-01), Sporri
patent: 3815296 (1974-06-01), Crutcher
patent: 3860778 (1975-01-01), Rudd et al.
patent: 4004124 (1977-01-01), Nakane et al.
patent: 4044414 (1977-08-01), Grycel, III
patent: 4142664 (1979-03-01), Feige
patent: 4163869 (1979-08-01), Almand, III et al.
patent: 4359599 (1982-11-01), Benner
patent: 4530147 (1985-07-01), Mattei et al.
patent: 5060582 (1991-10-01), Salzer
patent: 5518285 (1996-05-01), Dick
patent: 5665187 (1997-09-01), Mackellar
patent: 6138419 (2000-10-01), Sekiguchi et al.
patent: 6373027 (2002-04-01), Jeong
patent: 6415496 (2002-07-01), Dominguez Casado et al.
patent: 6439649 (2002-08-01), Lorenzo et al.
patent: 6479168 (2002-11-01), Mazumder et al.
patent: 6568744 (2003-05-01), Fujan et al.
patent: 6622366 (2003-09-01), Luffel et al.
patent: 6625865 (2003-09-01), Munkholm
patent: 6669396 (2003-12-01), Mattle
patent: 6688000 (2004-02-01), Wang et al.
patent: 19625873 (1998-08-01), None
patent: 19808122 (1999-09-01), None
patent: 0771605 (1997-07-01), None
patent: 2158015 (1985-11-01), None
patent: 63056366 (1988-03-01), None
patent: 03115635 (1991-05-01), None
patent: 09141427 (1997-06-01), None
patent: 11287619 (1999-10-01), None
patent: 2001087879 (2001-04-01), None
patent: 2002018583 (2002-01-01), None
patent: 2002239722 (2002-08-01), None
PCT International Search Report dated Oct. 1, 2002.

Affiliated with

Also associated with

Rating

Method of forming a stress isolating joint on a dump body does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of forming a stress isolating joint on a dump body, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of forming a stress isolating joint on a dump body will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3359383