Dumper body that includes structural transitioning

A dumper body is disclosed. The dumper body may include a pivot assembly. The dumper body may include at least one of: a set of ribs, wherein the set of ribs is connected to the pivot assembly such that the set of ribs is comprised of multiple respective discontinuous structures, and a set of stringers, wherein the set of stringers includes a respective stringer cut-out around an outside surface of a bed plate of the dumper body at a point where a top plate of the dumper body connects to an inside surface of the bed plate.

TECHNICAL FIELD

The present disclosure relates generally to a dumper body and, more particularly, to a dumper body that includes structural transitioning.

BACKGROUND

A machine, such as a large off-highway truck used in the mining and/or heavy construction industries, may include a dumper body that is used to move material (e.g., rocks, dirt, construction components, and/or the like) from one point to another. Due to the size, use, and/or cost of these types of machines, durability of the machine, and of the dumper body in particular, may be a consideration during design of the machine. In addition, overall manufacturing time and overall weight of the resulting machine may be considerations as well. For example, overall manufacturing time of the machine may impact a producer's capability to meet production deadlines for customers (e.g., a longer production time may negatively impact a producer's capability to meet a production deadline). Additionally, or alternatively, an increased overall weight of the resulting machine may be a result of attempting to increase a durability of the machine (e.g., via use of thick metal plates for components of the machine, via use of additional material for structural support of the machine, and/or the like) but may negatively impact a maximum payload weight that the machine can receive (e.g., the more the machine weighs, the less payload the machine may be capable of receiving due to total weight limitations of tires, brakes, and/or the like of the machine). As such, various components, such as a dumper body, may be adapted based on these considerations and/or for one or more uses and/or functions by varying the design of the components.

One attempt to adapt a dumper body is disclosed in U.S. Patent Application Publication No. 2003/0178883 published on Sep. 25, 2003 (“the '883 publication”). In particular, the '883 publication discloses a body support assembly for an off-highway truck. In particular, the '883 publication discloses a body support assembly for pivotally attaching the dumper body to the frame of the truck. The body support assembly includes a base member and a first and second body support member attached to the base member. The first and second body support members each include a bore adapted to receive a steel pin. The '883 publication provides a dumper body that can be manufactured without the need to line bore the pin bores after welding of the dumper body has been completed.

While the '883 publication may provide a dumper body that can be manufactured without the need to line bore the pin bores after welding of the dumper body has been completed, other designs of a dumper body may facilitate other functions and/or uses.

The dumper body of the present disclosure provides one or more other functions and/or uses that are different than what is set forth above in the art.

SUMMARY

According to some aspects, the present disclosure is related to a dumper body, comprising: a pivot assembly; and at least one of: a set of ribs, wherein the set of ribs is connected to the pivot assembly such that the set of ribs is comprised of multiple respective discontinuous structures; and a set of stringers, wherein the set of stringers includes a respective stringer cut-out around an outside surface of a bed plate of the dumper body at a point where a top plate of the dumper body connects to an inside surface of the bed plate.

According to some aspects, the present disclosure is related to a machine, comprising: a dumper body, wherein the dumper body comprises: multiple pivot assemblies; multiple ribs, wherein the multiple ribs are connected to the multiple pivot assemblies such that the multiple ribs are comprised of multiple respective discontinuous structures; and multiple stringers, wherein the multiple stringers include a respective stringer cut-out around an outside surface of a bed plate of the dumper body at a point where a top plate of the dumper body connects to an inside surface of the bed plate.

According to some aspects, the present disclosure is related to a pivot assembly, comprising: multiple plates, wherein the multiple plates comprise: a respective pivot bore and a respective doubler, wherein a first respective portion of a set of ribs of a dumper body is connected to a first plate, of the multiple plates, and a second respective portion of the set of ribs is connected to a second plate of the multiple plates, wherein the first respective portion and the second respective portion are discontinuous from each other; and multiple sets of gussets, wherein a first set of gussets, of the multiple sets of gussets, is connected to the first plate and the first respective portion, and a second set of gussets, of the multiple sets of gussets, is connected to the second plate and the second respective portion.

DETAILED DESCRIPTION

FIG. 1is a diagram100of a side view of an example machine that includes a dumper body that includes structural transitioning.FIG. 1shows an off-highway truck105having a dumper body110. The off-highway truck105may include a frame115having a plurality of rear wheels120and a pair of front wheels125. An engine compartment130and an operator's cab135may be mounted at one end of the frame115. An engine (not shown inFIG. 1) and a transmission (not shown inFIG. 1) may be mounted within the engine compartment130.

The dumper body110may include a box portion and a skeletal structure. The dumper body110may comprise steel, aluminum, and/or the like. The box portion may define an inside surface and an outside surface (e.g., of a bed plate, or multiple bed plates, that form a base or a floor of the box portion). The box portion may include two side walls (e.g., a first side wall and a second side wall), and a front wall positioned between the first side wall and the second side wall toward the end of the machine that includes the engine compartment130and/or the operator's cab135. The dumper body110may, in some implementations, include a tailgate to prevent payload from spilling from dumper body110during transport. The tailgate may be configured to move between an open position and a closed position. The tailgate, if the dumper body110is so equipped, may be positioned in the box portion toward another end of the off-highway truck105away from the end that includes the engine compartment130and/or the operator's cab135(e.g., that is the dumping end of a rear dump dumper body110).

The skeletal structure may include a pair of stringers that extend along the outside surface of a bed plate of the dumper body110between a first end of the dumper body110that includes the front wall and a second end of the dumper body110that includes the tailgate (e.g., an end that is the dumping end of the dumper body110), a plurality of ribs that extend along the outside surface of the bed plate of the dumper body110between a first side of the bed plate of the dumper body110that includes the first side wall and a second side of the bed plate of the dumper body110that includes the second side wall.

As shown by reference number140, the dumper body110may be pivotally attached to frame115by a pivot assembly145(e.g., the same as or similar to a pivot assembly208described elsewhere herein). The pivot assembly145may be located on the outside surface of the dumper body110(e.g., on the outside surface of the bed plate of the dumper body110), toward the middle or rear of the dumper body110. The dumper body110may further include a pair of cylinder brackets150. The pair of cylinder brackets150may be connected to the outside surface of the bed plate of the dumper body110. The pair of cylinder brackets150may be positioned toward the front of the dumper body110. A cylinder bracket150may be configured to receive a first end155of a hydraulic cylinder160.

As further shown inFIG. 1, a second pair of cylinder brackets165may be connected to a second end170of the hydraulic cylinder160. The first end155and the second end170may be connected to pivot bores of respective cylinder brackets (e.g., cylinder bracket150may be connected to the first end155via a pivot bore175). The hydraulic cylinders160may be moveable between a retracted position (shown) and an extended position (not shown). In the extended position, front end of dumper body110may be raised for ejecting payload from the box portion of dumper body110. The retracted position may be utilized for loading payload into the box portion of dumper body110.

As indicated above,FIG. 1is provided as an example. Other examples are possible and may differ from what was described in connection withFIG. 1. In some implementations, off-highway truck105may include additional components, fewer components, different components, or differently arranged components than those shown inFIG. 1.

FIG. 2is a diagram200of a perspective view of an example outside surface of a bed plate of a dumper body of the example machine ofFIG. 1. For example,FIG. 2shows a bottom of a box portion of the dumper body110(e.g., an outside surface of a bed plate of the dumper body110). As shown inFIG. 2, the dumper body110may include a bed plate202. The bed plate202may form an outside surface of the dumper body110(e.g., an outside surface of a box portion of the dumper body110). In some implementations, the bed plate202may form an inside surface, or a floor, of the dumper body110(e.g., of a box portion of the dumper body110). In some implementations, one or more other plates, similar to bed plate202, may be connected to bed plate202to form the inside surface of the dumper body110.

As further shown inFIG. 2, dumper body110may include a set of stringers204(e.g., stringers204-1and204-2). In some implementations, the set of stringers204may be connected to the bed plate202. For example, the set of stringers204may be connected to the bed plate202via welding, via use of a fastener (e.g., a bolt, a rivet, a screw, and/or the like), and/or the like. In some implementations, the set of stringers204may be fabricated from metal, such as steel, aluminum, and/or the like. In some implementations, the set of stringers204may extend from a first end of the dumper body110that includes a front wall to a second end of the dumper body110that includes a tailgate (e.g., which is the dumping end of the dumper body110). For example, the set of stringers204may extend in a direction parallel to a general direction of travel of the off-highway truck105. The set of stringers204may include various components, as described elsewhere herein.

As further shown inFIG. 2, the dumper body110may include a set of ribs206(e.g., ribs206-1and206-2). In some implementations, the set of ribs206may be connected to bed plate202. For example, the set of ribs206may be connected to bed plate202via welding, via use of a fastener, and/or the like. In some implementations, the set of ribs206may be fabricated from metal, such as steel, aluminum, and/or the like. In some implementations, the set of ribs206may extend between sides of bed plate202. For example, the set of ribs206may extend perpendicular to a general direction of travel of off-highway truck105. The set of ribs206may include various components, as described elsewhere herein.

In some implementations, the dumper body110may include stringers204along a width of the bed plate202(e.g., equally or unequally spaced along the width of the bed plate202). Additionally, or alternatively, dumper body110may include ribs206along a length of bed plate202(e.g., equally or unequally spaced along the length of bed plate202). In some implementations, stringers204and ribs206may intersect each other (e.g., in a generally perpendicular manner). For example, and as shown inFIG. 2, the set of stringers204and the set of ribs206may intersect each other in a perpendicular manner.

As further shown inFIG. 2, the dumper body110may include a set of pivot assemblies208(e.g., pivot assemblies208-1and208-2). The set of pivot assemblies208may facilitate rotation of the dumper body110into various positions by movement of a set of hydraulic cylinders160associated with the off-highway truck105, such as for hauling or unloading of payload. As further shown inFIG. 2, stringers204-1and204-2may include a respective pivot assembly208(e.g., stringer204-1may include pivot assembly208-1and stringer204-2may include pivot assembly208-2). For example, plates of pivot assemblies208-1and208-2(described elsewhere herein) may be parallel with stringers204-1and204-2, respectively. In some implementations, and as shown inFIG. 2, the set of ribs206of the dumper body110may intersect the set of pivot assemblies208(e.g., may intersect the plates of the set of pivot assemblies208). For example, the set of ribs206may intersect the plates of the set of pivot assemblies208in a perpendicular manner.

As indicated above,FIG. 2is provided as an example. Other examples are possible and may differ from what was described in connection withFIG. 2. In some implementations, dumper body110may include additional components, fewer components, different components, or differently arranged components than those shown inFIG. 2.

FIG. 3is a diagram300of a perspective view of an example pivot assembly installed on a dumper body of the example machine ofFIG. 1. For example,FIG. 3shows a perspective view of various components of the pivot assembly208-1installed on the dumper body110. Although shown in the context of pivot assembly208-1, the implementations apply equally to the pivot assembly208-2.

As shown inFIG. 3, pivot assembly208-1may include a set of plates310(e.g., plate310-1and plate310-2). For example, pivot assembly208-1may include a set of metal plates as the plates310-1and310-2. In some implementations, the set of plates310may be connected to portions of stringer204-1(e.g., welded to stringer204-1). Additionally, or alternatively, the set of plates310may be connected to respective portions of the set of ribs206(e.g., welded to the ribs206-1and206-2), as described elsewhere herein. Additionally, or alternatively, the set of plates310may generally form a body of the pivot assembly208-1to which other components of the pivot assembly208-1may be connected.

As further shown inFIG. 3, the pivot assembly208-1may include a set of pivot bores320(e.g., pivot bores320-1and320-2). For example, the plate310may be formed such that the plate310defines a respective pivot bore320(e.g., the plate310-1may be formed such that the plate310-1defines the pivot bore320-1). In some implementations, the pivot bore320may be configured to receive a pin and/or an associated bushing about which dumper body110may be rotated into various positions.

As further shown inFIG. 3, the pivot assembly208may include a set of doublers330(e.g., doublers330-1and330-2). For example, the set of doublers330may be connected to the set of plates310around the set of pivot bores320. In some implementations, a doubler330may be associated with a pivot bore320(e.g., a respective doubler330may be associated with the set of pivot bores320). In some implementations, the set of doublers330may be produced from metal. In some implementations, the set of doublers330may provide reinforcement to the set of pivot bores320, may include bearings to facilitate rotation of dumper body110, may protect the set of pivot bores320from damage during use, and/or the like.

As further shown inFIG. 3, the dumper body110and/or the pivot assembly208-1may include a set of gussets340(e.g., shown as gussets340-1through340-4). For example, the set of gussets340may be connected (e.g., welded, connected using a fastener, and/or the like) to a respective plate310of the pivot assembly208-1. In some implementations, the set of gussets340may be connected to an outer surface of the plate310. For example, the gussets340-1through340-4may be connected to an outer surface of the plate310-1. A similar set of gussets340may be connected to an outer surface of the plate310-2in a similar manner. In some implementations, and as further shown inFIG. 3, subsets of the set of gussets340may be connected to respective ribs206. For example, the gussets340-1and340-2may be connected to the rib206-1and the gussets340-3and340-4may be connected to the rib206-2.

In some implementations, the set of gussets340may provide mechanical support for the pivot assembly208-1and/or the set of ribs206, may transfer load stresses from the set of ribs206to pivot assembly208-1, and/or the like. Additionally, or alternatively, the set of gussets340may provide needed flexibility to the dumper body110to absorb mechanical stress to prevent damage to the dumper body110during movement of payload (e.g., damage that could occur due to stresses experienced while traveling on bumpy or uneven roads, damage that could occur from shifting of payload and/or other stresses experienced during turning of the off-highway truck105, and/or the like).

As further shown inFIG. 3, the set of pivot bores320may be positioned relative to the set of ribs206when installed on dumper body110such that the set of pivot bores320is not aligned with the set of ribs206. For example, and as shown by reference number350, the pivot bore320-1may be aligned within the plate310-1such that the pivot bore320-1is between the ribs206-1and206-2and is not in line with either the rib206-1or the rib206-2.

In some implementations, and as further shown inFIG. 3, a configuration of some of the gussets340of the set of gussets340may be based on this configuration of the set of pivot bores320. For example, and as shown inFIG. 3, the gussets340-2and340-3may be connected to the plate310-1in an angled manner toward the pivot bore320-1. This may facilitate transfer of load stresses to the pivot bore320-1and/or a pin installed through the pivot bore320-1. In some implementations, the gussets340connected to the plate310-2may be configured in a similar manner.

As indicated above,FIG. 3is provided as an example. Other examples are possible and may differ from what was described in connection withFIG. 3. In some implementations, pivot assembly208may include additional components, fewer components, different components, or differently arranged components than those shown inFIG. 3.

FIG. 4is a diagram400of a top view of multiple example pivot assemblies installed on a dumper body of the example machine ofFIG. 1. For example,FIG. 4shows a top view of multiple pivot assemblies208installed on the dumper body110and various components of the set of ribs206relative to the multiple pivot assemblies208.

In some implementations, and as shown inFIG. 4, a rib206may include multiple portions (e.g., multiple discontinuous structures). For example, the portions of the rib206may not be connected to each other, may be separate structures installed on the bed plate202, and/or the like. As an example, with respect to the rib206-1, the rib206-1may include a portion402-1a, a portion402-1b, and a portion402-1c. Continuing with the previous example, the portion402-1amay be connected to a first plate310of the pivot assembly208-2(e.g., an exterior plate310of the pivot assembly208-2), the portion402-1bmay be connected to a second plate310of the pivot assembly208-2(e.g., an interior plate310of the pivot assembly208-2) and a first plate310of the pivot assembly208-1(e.g., an interior plate310of the pivot assembly208-1), and the portion402-1cmay be connected to a second plate of the pivot assembly208-1(e.g., an exterior plate310of the pivot assembly208-1). In some implementations, the various portions of the rib206-1may be connected to outer surfaces of the plates310of the pivot assembly208-1and the pivot assembly208-2. In some implementations, the rib206-2may include a similar configuration of portions of the rib206-2.

As indicated above,FIG. 4is provided as an example. Other examples are possible and may differ from what was described in connection withFIG. 4. In some implementations, the dumper body110may include additional components, fewer components, different components, or differently arranged components than those shown inFIG. 4.

FIG. 5is a diagram500of an internal view of an example pivot assembly installed on a dumper body of the example machine ofFIG. 1. For example,FIG. 5shows, for explanatory and/or illustrative purposes, the pivot assembly208-1with one of the plates310removed to show an internal configuration of the pivot assembly208-1.FIG. 5shows an example of multiple respective discontinuous structures of the ribs206-1and206-2.

As shown by reference number510-1, the portion402-1band the portion402-1care two separate structures and are not connected to each other. Rather, these portions of the rib206-1are connected to the pivot assembly208-1via the set of plates310associated with the pivot assembly208-1and the set of gussets340associated with the pivot assembly208-1. In some implementations, the portions402-1aand402-1bmay be connected to the pivot assembly208-2in a similar manner. In addition, the rib206-2may be configured with respect to the pivot assembly208-2in a manner similar to that described above with respect to the stringer206-1. For example, reference number510-2shows a configuration that is the same as or similar to that described with regard to reference number510-1.

As further shown inFIG. 5, the pivot assembly208-1may include a set of internal gussets520within a body of the pivot assembly208-1(e.g., internal gussets520-1through520-4). In some implementations, the set of internal gussets520may provide mechanical support for other components of the pivot assembly208-1, may provide rigidity to the pivot assembly208-1, and/or the like. In some implementations, the set of internal gussets520may include a first subset of internal gussets520positioned on one side of the pivot bores320(reference number not shown inFIG. 5) and a second subset of internal gussets520on another side of the pivot bores320.

As indicated above,FIG. 5is provided as an example. Other examples are possible and may differ from what was described in connection withFIG. 5. In some implementations, the dumper body110may include additional components, fewer components, different components, or differently arranged components than those shown inFIG. 5.

FIG. 6is a diagram600of a perspective view of an example pivot assembly of the example machine ofFIG. 1. For example,FIG. 6shows a perspective view of a configuration of a pivot assembly208(e.g., the pivot assembly208-1and/or the pivot assembly208-2, described elsewhere herein).

As shown inFIG. 6, plate310-1of the pivot assembly208may include a set of cut-outs610(e.g., cut-outs610-1and610-2). In some implementations, the set of cut-outs610may be associated with the set of ribs206(e.g., the pivot assembly208may include a set of respective cut-outs610for a set of ribs206). For example, the plate310-1may include a respective cut-out610associated with the set of ribs206(e.g., the cut-out610-1may be associated with the rib206-1and the cut-out610-2may be associated with the rib206-2). In some implementations, the set of cut-outs610may be formed in the plate310where a respective rib206is to be connected to the plate310. In some implementations, dimensions of the cut-out610-1may be based on dimensions of the rib206associated with the cut-out610. For example, dimensions of the cut-out610may be such that the cut-out610is within a structure of the rib206. In some implementations, the plate310-2may include a set of cut-outs610that is the same as or similar to that described with regard to the plate310-1.

As indicated above,FIG. 6is provided as an example. Other examples are possible and may differ from what was described with regard toFIG. 6. In some implementations, the pivot assembly208may include additional components, fewer components, different components, or differently arranged components than those shown inFIG. 6.

FIG. 7is a diagram700of a perspective view of multiple stringers installed on a dumper body of the example machine ofFIG. 1. For example,FIG. 7shows a front end of multiple stringers204installed on the dumper body110(e.g., shows an end of the dumper body110that includes a front wall, as described elsewhere herein, and an end of the multiple stringers204connected to the end of the dumper body110).

As shown inFIG. 7, the set of stringers204may include a respective stringer cut-out710(e.g., the stringer cut-outs710-1and710-2). For example, the stringer204-1may include the stringer cut-out710-1and the stringer204-2may include the stringer cut-out710-2. In some implementations, a stringer cut-out710may be formed such that a portion of a stringer204that includes the stringer cut-out710is not connected to the bed plate202of the dumper body110when the stringer204is connected to the bed plate202. In some implementations, the stringer cut-outs710may be formed by removing material from the stringers204during fabrication of the stringers204. Additionally, or alternatively, the stringer cut-outs710may be formed by shaping the stringers204during fabrication of the stringers204. Additionally, or alternatively, the stringer cut-outs710may be formed by as a result of a shape of separate portions of the stringers204that are connected together to form the stringers204.

As indicated above,FIG. 7is provided as an example. Other examples are possible and may differ from what was described with regard toFIG. 7. In some implementations, the dumper body110may include additional components, fewer components, different components, or differently arranged components than those shown inFIG. 7.

FIG. 8is a diagram800of a side view of a stringer installed on a dumper body of the example machine ofFIG. 1. For example,FIG. 8shows a side view of the end of the dumper body110shown inFIG. 7.

As shown inFIG. 8, the stringer204-1may include a cover plate810(e.g., a set of stringers204associated with the dumper body110may include a respective cover plate810). For example, the cover plate810may be associated with the stringer cut-out710-1(e.g., may partially define the stringer cut-out710-1). In some implementations, the cover plate810may be formed from metal. In some implementations, the cover plate810may enclose an interior of the stringer204-1, such as when the stringer204-1is formed in a generally “U” shape, in a generally “V” shape, and/or the like. In this way, the cover plate810may protect the interior of the stringer204-1from debris and/or other material. In some implementations, the cover plate810may provide mechanical support to the stringer204-1, such as to reduce or eliminate deformation of the stringer204-1.

As further shown inFIG. 8, the dumper body110may include a top plate820. For example, the top plate820may be included in a box portion of the dumper body110and may be connected to an inside surface of a front plate of the dumper body110and an inside surface of the bed plate202. In some implementations, the top plate820may be curved in shape and may mechanically support a payload when loaded in the box portion of the dumper body110.

As shown by reference number830, the stringer204-1may be connected to the dumper body110at an end of an outside surface of the bed plate202and on a first side of a point where the top plate820connects to an inside surface of the bed plate202, and to rib206-3(e.g., different than ribs206-1and206-2) connected to the outside surface of the bed plate202on a second side of the point where the top plate820connects to the inside surface of the bed plate202. For example, the left arrow associated with reference number830shows the stringer204-1connected to the dumper body110at an end of an outside surface of the bed plate202and on a first side of a point (shown by the middle arrow) where the top plate820connects to an inside surface of the bed plate202. Continuing with the previous example, the right arrow associated with reference number830shows the stringer204-1connected to the rib206-3(e.g., different than the ribs206-1and206-2) connected to the outside surface of the bed plate202on a second side of the point (shown by the middle arrow) where the top plate820connects to the inside surface of the bed plate202.

As further shown by reference number830, the top plate820may generally not intersect the rib206-3and/or may not be connected to the stringer204-1via the bed plate202(e.g., as shown by the middle arrow associated with reference number830). Due to this, the cut-out710-1may provide flexibility to the dumper body110, thereby reducing or eliminating localized stiffness which was previously occurring between the top plate820and the stringer204-1via the bed plate202, when both were connected to each other, without the cut-out710-1, via the bed plate202.

In some implementations, other stringers204connected to the bed plate202may be configured in the same or a similar manner. For example, the stringer204-2(not shown inFIG. 8) may include a cover plate810and may be connected to the dumper body110in a manner that is the same as or similar to that described with regard to the stringer204-1.

As indicated above,FIG. 8is provided as an example. Other examples are possible and may differ from what was described with regard toFIG. 8. In some implementations, the dumper body110may include additional components, fewer components, different components, or differently arranged components than those shown inFIG. 8.

INDUSTRIAL APPLICABILITY

The disclosed dumper body110may be used with any machine that includes a dumper body, such as an off-highway truck105. By including portions of a set of ribs206connected to a set of pivot assemblies208(e.g., the portions402-1athrough402-1cfor the rib206-1and the portions402-2athrough402-2cfor the rib206-2), an unloaded weight of the dumper body110may be reduced. For example, the set of ribs206may not include material that would otherwise be included in the set of ribs206when the set of ribs206is formed as a respective continuous structure. This reduces an unloaded weight of the dumper body110and increases a weight of a payload that the off-highway truck105can receive. In addition, by including a set of gussets340that is connected to the rib206and to the pivot assembly208, a structural integrity of the dumper body110may be substantially maintained despite the lack of material that would otherwise be associated with the set of ribs206.

Additionally, or alternatively, by including a set of ribs206that is formed in portions, a manufacturing time for the dumper body110may be reduced. For example, utilizing a set of ribs206in various portions may facilitate pre-fabrication and/or installation of the pivot assembly208. This may reduce or eliminate a need for complicated and/or difficult welding to form a pivot assembly208around a rib206when the rib206is not formed from multiple portions.

By including a set of stringers204configured with a respective stringer cut-out710, an unloaded weight of the dumper body110may be reduced, thereby increasing a weight of a payload that the off-highway truck105can receive. In addition, by being connected around a point where the top plate820connects to an inside surface of the bed plate202(e.g., to a front end of the bed plate202of the dumper body110and to a rib206), a structural integrity of the dumper body110may be substantially maintained despite the lack of material that would otherwise be present in place of the stringer cut-out710.