CA1057338A - Forward dumping truck construction - Google Patents
Forward dumping truck constructionInfo
- Publication number
- CA1057338A CA1057338A CA318,186A CA318186A CA1057338A CA 1057338 A CA1057338 A CA 1057338A CA 318186 A CA318186 A CA 318186A CA 1057338 A CA1057338 A CA 1057338A
- Authority
- CA
- Canada
- Prior art keywords
- truck
- frame
- dump body
- side beams
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Body Structure For Vehicles (AREA)
Abstract
ABSTRACT
A truck comprises a generally U-shaped frame and a dump body pivot-ally mounted forwardly on the frame and supported on a pair of laterally spaced and parallel side beams thereof. The dump body comprises four triangularly-shaped bottom wall portions converging downwardly to form an inverse pyramidal construction. A double-acting hydraulic cylinder is pivotally interconnected between the frame and dump body to selectively raise the dump body to discharge materials forwardly of the truck. An operator's cab is mounted on a forward end of one of the side beams.
A truck comprises a generally U-shaped frame and a dump body pivot-ally mounted forwardly on the frame and supported on a pair of laterally spaced and parallel side beams thereof. The dump body comprises four triangularly-shaped bottom wall portions converging downwardly to form an inverse pyramidal construction. A double-acting hydraulic cylinder is pivotally interconnected between the frame and dump body to selectively raise the dump body to discharge materials forwardly of the truck. An operator's cab is mounted on a forward end of one of the side beams.
Description
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mis application is divided out of copending Canadian application No. 267,828, filed December 14, 1976.
This invention relates to a truck of the type adapted for off-high-way load carrying and dumping operations.
Conventional trucks employed for off-highway construction operations normally comprise a frame mounted on a plurality of roadwheels and a dump body pivotally mounted on the frame to discharge materials rearwardly of the truck. Such a dumping operation normally requires a'`grade spotter" to aid the operator in dumping a load.
An object of this invention is to provide an improved dump truck which is adapted to expedite the cycle time required for loading and dumping operations.
According to the invention there is provided a truck comprising a frame mounted on a plurality of roadwheels and including a pair of laterally spaced and parallel side beams, an operator's cab mounted forwardly on said frame, a dump body comprising a pair of laterally spaced and parallel support rails each normally disposed on a respective one of said side beams when said dump body is horizontally disposed and maintained in a ~;~ carry position on said frame, pivot means pivotally mounting said dump body forwardly on said frame, and actuating means pivotally intercor~ected between said frame and said dump body for selectively pivoting said dump body about said pivot means and towards a forward end of said truck from its carry position to a raised dump position whereby material carried in said dump body can be discharged forwardly of said truckO
Other objects of this invention will become apparent from the following description and accompanying drawings wherein:
Figure 1 is a side elevational view of a truck embodying this invention, with a dump body thereof being shown by phantom lines in its ; - -- 1 --.. , . . - -.. : . ~ . : .
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raised or dump position f operation;
Figure 2 is a reduced top plan view of the undercarriage of the truck, taken in the direction of arrows II-II in Figure 1, with the dump body and attendant mechanisms removed for clarification purposes;
Figure 3 is a rear elevational view of a rear axle and drive assembly, taken in the direction of arrows III-III in Figure l;
Figure 4 is a partial front elevational view of the truck taken in the direction of the arrows IV-IV; and Figure 5 is a bottom perspective view of the truck's dump body.
Figure 1 illustrates a truck 10 comprising a main frame 11 mounted on a plurality of front and rear roadwheels 12 and 13, respectively.
As shown in Figure 2, the frame is generally U-shaped to comprise a pair of laterally spaced and parallel side beams 14 and a pair of cross beams 15 and 16 secured between the side beams. m e side beams are further secured together by a pair of longitudinally spaced and laterally extending support members 17 and 18 and the forward end of the frame is open for purposes hereinafter explained.
An engine 19 is suitably mounted on a rearward end of the frame and disposed transversely thereon, along with an air-cooled radiator 20.
The engine is suitably connected to rear roadwheels 13 by drive means, herein-after described, to drive the same to propel the truck. As shown in Figures ..
1057;~3~
mis application is divided out of copending Canadian application No. 267,828, filed December 14, 1976.
This invention relates to a truck of the type adapted for off-high-way load carrying and dumping operations.
Conventional trucks employed for off-highway construction operations normally comprise a frame mounted on a plurality of roadwheels and a dump body pivotally mounted on the frame to discharge materials rearwardly of the truck. Such a dumping operation normally requires a'`grade spotter" to aid the operator in dumping a load.
An object of this invention is to provide an improved dump truck which is adapted to expedite the cycle time required for loading and dumping operations.
According to the invention there is provided a truck comprising a frame mounted on a plurality of roadwheels and including a pair of laterally spaced and parallel side beams, an operator's cab mounted forwardly on said frame, a dump body comprising a pair of laterally spaced and parallel support rails each normally disposed on a respective one of said side beams when said dump body is horizontally disposed and maintained in a ~;~ carry position on said frame, pivot means pivotally mounting said dump body forwardly on said frame, and actuating means pivotally intercor~ected between said frame and said dump body for selectively pivoting said dump body about said pivot means and towards a forward end of said truck from its carry position to a raised dump position whereby material carried in said dump body can be discharged forwardly of said truckO
Other objects of this invention will become apparent from the following description and accompanying drawings wherein:
Figure 1 is a side elevational view of a truck embodying this invention, with a dump body thereof being shown by phantom lines in its ; - -- 1 --.. , . . - -.. : . ~ . : .
.. . . .
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raised or dump position f operation;
Figure 2 is a reduced top plan view of the undercarriage of the truck, taken in the direction of arrows II-II in Figure 1, with the dump body and attendant mechanisms removed for clarification purposes;
Figure 3 is a rear elevational view of a rear axle and drive assembly, taken in the direction of arrows III-III in Figure l;
Figure 4 is a partial front elevational view of the truck taken in the direction of the arrows IV-IV; and Figure 5 is a bottom perspective view of the truck's dump body.
Figure 1 illustrates a truck 10 comprising a main frame 11 mounted on a plurality of front and rear roadwheels 12 and 13, respectively.
As shown in Figure 2, the frame is generally U-shaped to comprise a pair of laterally spaced and parallel side beams 14 and a pair of cross beams 15 and 16 secured between the side beams. m e side beams are further secured together by a pair of longitudinally spaced and laterally extending support members 17 and 18 and the forward end of the frame is open for purposes hereinafter explained.
An engine 19 is suitably mounted on a rearward end of the frame and disposed transversely thereon, along with an air-cooled radiator 20.
The engine is suitably connected to rear roadwheels 13 by drive means, herein-after described, to drive the same to propel the truck. As shown in Figures ..
2 and 3, each pair of rear roadwheels 13 is rotatably mounted on a lever ;~ member of U-shaped sub-frame 21 having its forward end universally connected to cross-beam 16 by a ball and socket connection 22.
~` The rearward ends of sub-frame 21 are secured to a rear axle housing 23. me axle housing is suspended beneath main frame 11 by a pair of laterally spaced and conventional suspension cylinders 24. m e opposite end of each suspension cylinder is universally connected to the main frame ''' ,: ~
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and axle housing by a ball and socket connection 25 and a transversely dis-posed tag link 26 is pivotally interconnected therebetween.
Each pair of front roadwheels 12 has a co = n axle housing 27 connected to an underside of side beam 14, for example, by a conventional suspension cylinder 28. The suspension cylinder further functions as a king pin in that it has conventional steering means associated therewith (partially illustrated) for selectively pivoting the roadwheels in a horizontal plane to steer the truck. Such steering means may be of the type disclosed in United States Patent No. 3,565,455,assigned to the assignee of this application.
As shown in Figures 1 and 4, an operator's cab 29 is mounted ; forwardly on the frame and preferably on the forward end and outboard side of a side beam 14. The forward end of the side beam comprises a forward portion 30 which extends downwardly and forwardly to have the operator`s cab mounted thereon. Thus, the operator is positioned to have substantially unobstructed visibility forwardly of the vehicle during the hereinafter described dumping operation of the truck.
Figure 5 illustrates a dump body 31 comprising a pair of laterally spaced and parallel support rails 32 and 33 normally disposed and supported on side beams 14. A rear crossrail 34 is secured between the side rails - and is adapted to be supported on cross-beam 15 in overlying relationship relative to engine 19 (Figure 1). The main body portion of the dump body is constructed in an inverse pyramidal shaped configuration to provide four triangularly shaped bottom wall portions 35, 36, 37 and 38 which converge downwardly to meet at an apex 39 thereof. Edges of each pair of adjacent wall portions meet at diagonally disposed reinforcing ribs 40, 41, 42 or 43~
A plurality of longitudinally extending and parallel reinforcing
~` The rearward ends of sub-frame 21 are secured to a rear axle housing 23. me axle housing is suspended beneath main frame 11 by a pair of laterally spaced and conventional suspension cylinders 24. m e opposite end of each suspension cylinder is universally connected to the main frame ''' ,: ~
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and axle housing by a ball and socket connection 25 and a transversely dis-posed tag link 26 is pivotally interconnected therebetween.
Each pair of front roadwheels 12 has a co = n axle housing 27 connected to an underside of side beam 14, for example, by a conventional suspension cylinder 28. The suspension cylinder further functions as a king pin in that it has conventional steering means associated therewith (partially illustrated) for selectively pivoting the roadwheels in a horizontal plane to steer the truck. Such steering means may be of the type disclosed in United States Patent No. 3,565,455,assigned to the assignee of this application.
As shown in Figures 1 and 4, an operator's cab 29 is mounted ; forwardly on the frame and preferably on the forward end and outboard side of a side beam 14. The forward end of the side beam comprises a forward portion 30 which extends downwardly and forwardly to have the operator`s cab mounted thereon. Thus, the operator is positioned to have substantially unobstructed visibility forwardly of the vehicle during the hereinafter described dumping operation of the truck.
Figure 5 illustrates a dump body 31 comprising a pair of laterally spaced and parallel support rails 32 and 33 normally disposed and supported on side beams 14. A rear crossrail 34 is secured between the side rails - and is adapted to be supported on cross-beam 15 in overlying relationship relative to engine 19 (Figure 1). The main body portion of the dump body is constructed in an inverse pyramidal shaped configuration to provide four triangularly shaped bottom wall portions 35, 36, 37 and 38 which converge downwardly to meet at an apex 39 thereof. Edges of each pair of adjacent wall portions meet at diagonally disposed reinforcing ribs 40, 41, 42 or 43~
A plurality of longitudinally extending and parallel reinforcing
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- ribs 44 are secured on rear wall portion 38 to extend between support rail 34 and ribs 40 and 41. Sidewall portions 35 and 37 exhibit similar constructions wherein transversely disposed reinforcing ribs 45 and 46, respectively, are formed integrally therewith. Forward wall portion 36 has a plurality of parallel reinforcing ribs 47 formed integrally therewith and oriented in a slightly different manner, i.e., disposed transversely in secured relationship between ribs 42 and 43.
As further shown in Figure 5, a rectangular skirt 48, at least substantially covering operator's cab 29 along with a portion of a material carrying cavity of the dump body, is formed integrally on the upper peripheral edges of the dump body and reinforced by a plurality of parallel ribs 49.
Two pairs of apertured lugs 50 and 51 are secured to the underside of the truck body and disposed at a forward end thereof. As shown in Figure 1, 2 and 4, pairs of lugs 50 and 51 are adapted to be pivotally mounted on brackets SZ and 53, respectively, by pins 54 (one shown)0 Each bracket is secured on portion 30 of a respective side rail to project forwardly therefrom whereby dump body 32 may be pivoted forwardly on the truck to its ~; dump position 31' , illustrated by phantom lines in Figure 1.
The truck body may be pivoted between its carry and dump positions on the frame by actuating means, preferably comprising at least one double-acting hydraulic cylinder 55. The cylinder may be of the telescopic type having its head end pivotally mounted on frame 11 by a pin 56 and its rod end pivotally mounted to a pair of brackets 57, secured on an underside of the truck body, by a pin 58. As shown in Figure 5, a second pair of brackets 57 are adapted for connection to a second actuating means (not shown) constructed and arranged in a like manner but positioned on an opposite side of the truck from that shown.
Returning to Figures 2 and 3 for a brief description of the drive _ 4 _ ' .~
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means for rear roadwheels 13, the housing of an electric drive motor 59 is secured on axle housing 23 The output shaft of the motor (not shown) is drivingly connected to a common drive axle 60, rotatably mounted in the axle housing, via standard differential gearing (not shown). Each end of the drive axle is drivingly connected to a wheel drive axle 61 for each pair of rear roadwheels by a gear train and speed reducer constituting a set of spur gears 62.
The electric motor 59 is operatively connected to an electric generator (not shown) and engine 19 (Figure 1) to thus selectively drive roadwheels 13. If so desired, a standard planetary gear set 63 may be operatively connected in a conventional manner between each drive axle 61 and one or both roadwheels connected thereto to provide a further speed . . .
reduction therebetween~
In addition, a standard brake package 64 may be suitably integrated t,' in the final wheel drive for each pair of roadwheels to provide selective braking thereof in a conventional manner, Referring again to Figures 1 and 4, it should be noted that a portion of the material carrying cavity of the dump body, defined in part by skirt 48, extends into overlying relationship relative to the operator's cab in contrast to conventional truck constructions. Also, an uppermost portion of the cab is disposed no higher in a vertical direction than an uppermost portion of frame 11. In addition, a substantial portion of the frame, including side beams 14 thereof, is vertically disposed above the roadwheels and each pair of the roadwheels are mounted directly beneath such side beams. Although the truck of this invention is particularly adapted for forward dumping5 it should be understood that the latter features, and others discussed above, are also adapted for use on rearward, sideward or bottom ~; dumping truck applications.
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- ribs 44 are secured on rear wall portion 38 to extend between support rail 34 and ribs 40 and 41. Sidewall portions 35 and 37 exhibit similar constructions wherein transversely disposed reinforcing ribs 45 and 46, respectively, are formed integrally therewith. Forward wall portion 36 has a plurality of parallel reinforcing ribs 47 formed integrally therewith and oriented in a slightly different manner, i.e., disposed transversely in secured relationship between ribs 42 and 43.
As further shown in Figure 5, a rectangular skirt 48, at least substantially covering operator's cab 29 along with a portion of a material carrying cavity of the dump body, is formed integrally on the upper peripheral edges of the dump body and reinforced by a plurality of parallel ribs 49.
Two pairs of apertured lugs 50 and 51 are secured to the underside of the truck body and disposed at a forward end thereof. As shown in Figure 1, 2 and 4, pairs of lugs 50 and 51 are adapted to be pivotally mounted on brackets SZ and 53, respectively, by pins 54 (one shown)0 Each bracket is secured on portion 30 of a respective side rail to project forwardly therefrom whereby dump body 32 may be pivoted forwardly on the truck to its ~; dump position 31' , illustrated by phantom lines in Figure 1.
The truck body may be pivoted between its carry and dump positions on the frame by actuating means, preferably comprising at least one double-acting hydraulic cylinder 55. The cylinder may be of the telescopic type having its head end pivotally mounted on frame 11 by a pin 56 and its rod end pivotally mounted to a pair of brackets 57, secured on an underside of the truck body, by a pin 58. As shown in Figure 5, a second pair of brackets 57 are adapted for connection to a second actuating means (not shown) constructed and arranged in a like manner but positioned on an opposite side of the truck from that shown.
Returning to Figures 2 and 3 for a brief description of the drive _ 4 _ ' .~
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means for rear roadwheels 13, the housing of an electric drive motor 59 is secured on axle housing 23 The output shaft of the motor (not shown) is drivingly connected to a common drive axle 60, rotatably mounted in the axle housing, via standard differential gearing (not shown). Each end of the drive axle is drivingly connected to a wheel drive axle 61 for each pair of rear roadwheels by a gear train and speed reducer constituting a set of spur gears 62.
The electric motor 59 is operatively connected to an electric generator (not shown) and engine 19 (Figure 1) to thus selectively drive roadwheels 13. If so desired, a standard planetary gear set 63 may be operatively connected in a conventional manner between each drive axle 61 and one or both roadwheels connected thereto to provide a further speed . . .
reduction therebetween~
In addition, a standard brake package 64 may be suitably integrated t,' in the final wheel drive for each pair of roadwheels to provide selective braking thereof in a conventional manner, Referring again to Figures 1 and 4, it should be noted that a portion of the material carrying cavity of the dump body, defined in part by skirt 48, extends into overlying relationship relative to the operator's cab in contrast to conventional truck constructions. Also, an uppermost portion of the cab is disposed no higher in a vertical direction than an uppermost portion of frame 11. In addition, a substantial portion of the frame, including side beams 14 thereof, is vertically disposed above the roadwheels and each pair of the roadwheels are mounted directly beneath such side beams. Although the truck of this invention is particularly adapted for forward dumping5 it should be understood that the latter features, and others discussed above, are also adapted for use on rearward, sideward or bottom ~; dumping truck applications.
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Claims (21)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A truck comprising a frame mounted on a plurality of roadwheels and including a pair of laterally spaced and parallel side beams, an operator's cab mounted forwardly on said frame, a dump body comprising a pair of laterally spaced and parallel support rails each normally disposed on a respective one of said side beams when said dump body is horizontally disposed and maintained in a carry position on said frame, pivot means pivotally mounting said dump body forwardly on said frame, and actuating means pivotally interconnected between said frame and said dump body for selectively pivoting said dump body about said pivot means and towards a forward end of said truck from its carry position to a raised dump position whereby material carried in said dump body can be discharged forwardly of said truck.
2. The truck of claim 1 wherein said pivot means pivotally mounts said dump body on each one of said side beams.
3. The truck of claim 2 wherein each of said side beams comprises a forward portion extending forwardly and downwardly of said frame and wherein said pivot means pivotally mounts said dump body on the forward portion of each of said side beams.
4. The truck of claim 1 wherein a forward portion of one of said side beams extends forwardly and downwardly of said frame and wherein said operator s cab is mounted on said forward portion.
5. The truck of claim 4 wherein said operator's cab is at least sub-stantially covered by peripheral portions of said dump body.
6. The truck of claim 1 wherein an engine is mounted on a rearward end of said frame in underlying relationship relative to said dump body.
7. The truck of claim 1 further comprising a cross-beam secured between said side beams and a sub-frame pivotally connected to said cross-beam, at least one pair of laterally spaced rear roadwheels disposed rearwardly of said actuating means and rotatably mounted on said sub-frame.
8. The truck of claim 7 wherein said sub-frame is pivotally connected to said cross-beam by a single ball and socket connection and further com-prising suspension cylinders each pivotally interconnected between a rearward end of said sub-frame and a respective one of said side beams.
9. The truck of claim 1 wherein said roadwheels comprise at least one pair of laterally spaced front roadwheels disposed beneath and mounted on a forward end of each of said side beams.
10. The truck of claim 9 wherein a combined suspension and steering cylinder means is secured to each of said side beams and rotatably mounts at least one front roadwheel on a lower end thereof.
11. The truck of claim 1 wherein said dump body comprises four triangu-larly shaped bottom wall portions converging downwardly to meet at apexes thereof disposed below said side beams to form an inverse pyramidal con-struction.
12. The truck of claim 11 wherein said dump body is substantially coextensive longitudinally relative to said frame.
13. The truck of claim 11 wherein each adjacent pair of adjacent bottom wall portions meet at a diagonally disposed reinforcing rib extending along common edges thereof.
14. The truck of claim 13 further comprising additional reinforcing ribs secured to an underside of each of said bottom wall portions and disposed in parallel and spaced relationship relative to each other.
15. The truck of claim 14 further comprising a rectangular skirt secured on upper peripheral edges of said dump body.
16. The truck of claim 1 further comprising a pair of longitudinally spaced support members secured transversely between said side beams and having said dump body supported thereon.
17. The truck of claim 1 further comprising a subframe pivotally connected at a forward end thereof to said main frame and secured at a rear-ward end thereof to an axle housing, said roadwheels comprising at least one pair of laterally spaced roadwheels rotatably mounted on outboard ends of said axle housing.
18. The truck of claim 17 further comprising a pair of laterally spaced suspension cylinders each pivotally interconnected between said axle housing and a respective one of said side beams.
19. The truck of claim 18 further comprising a tag link at least generally disposed in alignment with said axle housing and pivotally inter-connected between said axle housing and said main frame.
20. The truck of claim 17 further comprising a drive motor mounted on said axle housing and drive means interconnecting said drive motor and said rear roadwheels for selectively rotating the same.
21. The truck of claim 20 wherein said drive means sequentially com-prises a common drive axle, a gear train connected to said drive axle and a wheel drive axle connected to said gear train and to each of said rear roadwheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA318,186A CA1057338A (en) | 1976-03-11 | 1978-12-19 | Forward dumping truck construction |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/665,733 US4071277A (en) | 1976-03-11 | 1976-03-11 | Forward dumping truck construction |
| CA267,828A CA1051061A (en) | 1976-03-11 | 1976-12-14 | Forward dumping truck construction |
| CA318,186A CA1057338A (en) | 1976-03-11 | 1978-12-19 | Forward dumping truck construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1057338A true CA1057338A (en) | 1979-06-26 |
Family
ID=27164824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA318,186A Expired CA1057338A (en) | 1976-03-11 | 1978-12-19 | Forward dumping truck construction |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1057338A (en) |
-
1978
- 1978-12-19 CA CA318,186A patent/CA1057338A/en not_active Expired
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