A dumper vehicle

Abstract

A dumper vehicle includes a chassis, a ground engaging propulsion structure mounted to the chassis, and an open topped container for carrying a load therein supported by the chassis. An operator cab mounted to the chassis, and an operator seat in said operator cab is moveable between a front facing position in which the operator seat faces the container and a rear facing position, wherein the front facing position is primarily for off- highway driving and the rear facing position is primarily for on-highway driving. The operator cab is mounted to the chassis by a resilient mounting arrangement. A drive arrangement provides tractive power to the ground engaging propulsion structure, wherein the drive arrangement has a prime mover defining an elongate axis that is arranged transversely with respect to the fore-aft axis of the dumper vehicle.

Description

[0001] A DUMPER VEHICLE

[0002] FIELD

[0003] The present teachings relate to a dumper vehicle.

[0004] BACKGROUND

[0005] Dumper vehicles, often referred to as "site dumpers" are manufactured in various different sizes to suit the needs of the application, ranging from those required for small building sites to those required for large scale construction projects. Such dumper vehicles typically include an open topped container, or skip, for transporting and dumping material.

[0006] During operation of the dumper vehicle, operator visibility is an important factor for the operator to safely and effectively perform operations of the dumper vehicle. For example, if the line of sight of the operator is obstructed, then the operator may not be able to see a pedestrian who is walking next to the dumper vehicle, which may result in injury.

[0007] The present teachings seek to provide an improved dumper vehicle.

[0008] SUMMARY

[0009] The present teachings provide a dumper vehicle according to the appended claims.

[0010] An aspect of the teachings provides a dumper vehicle. The dumper vehicle may comprise a chassis and a ground engaging propulsion structure mounted to the chassis. The vehicle may have an open topped container for carrying a load therein supported by the chassis, the container moveable between a transport position for transporting a load and a discharge position for discharging of a load.

[0011] An operator cab may be mounted to the chassis. An operator seat may be provided in the operator cab. The operator seat may be moveable between a front facing position in which the operator seat faces the container and a rear facing position, wherein the front facing position is primarily for off-highway driving and the rear facing position is primarily for on- highway driving.

[0012] A drive arrangement may be supported by the chassis and configured to provide, at least in part, tractive power to the ground engaging propulsion structure. The drive arrangement may be configured to operate in a first mode corresponding to the front facing position of the operator seat and a second mode corresponding to the rear facing position of the operator seat. The drive arrangement may be housed within a body or bodywork portion of the dumper vehicle.

[0013] The drive arrangement may comprise a prime mover defining an elongate axis that is arranged transversely with respect to the fore-aft axis of the dumper vehicle. Advantageously, providing a transverse prime mover enables the prime mover to sit lower on the dumper vehicle, thereby reducing cabin floor height and overall machine height. Additionally, accessibility of the prime mover for maintenance is improved. Providing a cooling arrangement which draws air through the rear wall panel helps to provide efficient cooling to the prime mover without supplying undesirable amounts of heat to the operator cab.

[0014] The prime mover may be located underneath the operator cab. Optionally, an entirety of the prime mover may be located beneath the operator cab. Providing the prime mover underneath the operator cab helps to provide a compact arrangement by utilising the space under the operator cab, and accessibility to the prime mover for maintenance is improved.

[0015] The dumper vehicle may comprise a cooling arrangement comprising a cooling pack. The cooling pack may be located between the prime mover and a rear wall panel of the chassis such that the operator seat faces the rear wall panel of the chassis in the rear facing position.

[0016] The rear wall panel may be the wall panel located on the chassis remote from the container.

[0017] The rear wall panel may comprise a grill arrangement comprising a plurality of apertures configured to receive a flow of air therethrough. The grill arrangement may occupy at least half of the rear wall panel. Optionally the grill arrangement may occupy at least two thirds of the rear wall panel.

[0018] The cooling pack may be mounted to the chassis behind the rear wall panel thereof. The cooling pack may comprise a cooling fan configured to draw air through the rear wall panel to cool the prime mover.

[0019] The cooling pack may comprise the cooling fan mounted to a radiator panel. The cooling fan may be configured to draw air through the rear wall panel towards the radiator panel. Advantageously, the cooling fan draws air towards the radiator panel for cooling, thereby improving efficiency of the cooling arrangement.

[0020] The cooling fan may be configured to draw air over the engine prior to exhausting the air via the rear wall panel.

[0021] The rear wall panel may comprise a cooling pack portion and an air intake portion. The cooling pack portion may be predominantly located on a first side of the rear wall with respect to the principal axis of the dumper vehicle and the air intake portion may be located predominantly on a second side of the principal axis of the dumper vehicle. Advantageously, this arrangement enables cooling air to be drawn in through the air intake portion, circulate the engine bay and be pushed through the cooling pack, thereby reducing opportunities for pockets of hot air to develop and reducing the likelihood of undesirable levels of heat energy being transferred to the operator cab.

[0022] The cooling arrangement may be configured to direct airflow from inside the chassis, through the cooling pack and through the cooling pack portion of the rear wall panel of the chassis. Advantageously, this arrangement enables cooling air to be drawn in through the air intake portion, circulate the engine bay and be pushed through the cooling pack portion, thereby reducing opportunities for pockets of hot air to develop and reducing the likelihood of undesirable levels of heat energy being transferred to the operator cab. The air can then flow out the rear wall panel without obstructing airflow through the air intake portion of the rear wall panel.

[0023] The cooling arrangement may comprise a deflector arrangement configured to direct air from the cooling pack through the cooling pack portion of the rear wall panel. Optionally the deflector arrangement may comprise at least one baffle.

[0024] A flow path of air may be through the air intake portion of the rear wall panel, through the cooling pack and out the cooling pack portion of the rear wall panel may be substantially U-shaped in plan view. Advantageously, this arrangement enables airflow through both sides of the rear wall panel, and increases a volume or air which can enter and exit through the rear wall panel.

[0025] The cooling arrangement may comprise a condenser. The condenser may be located in front of the prime mover and the cooling pack may be located rearward of the prime mover.

[0026] The cooling arrangement may comprise a condenser cooling fan located on the same side of the prime mover as the condenser. Advantageously, the condenser and condenser fan help to mitigate stagnant air within the engine housing, particularly stagnant air caused by drafts / cross flow.

[0027] The chassis may comprise at least one access aperture located below the operator cab for providing access to the drive arrangement

[0028] The chassis may comprise an access panel connected to the chassis and arranged to at least partially cover the access aperture to form a cover for the cut-out section. Advantageously, the cut-out sections provide access through the chassis to components of the dumper vehicle located inside the chassis for assembly and maintenance operations.

[0029] The at least one access aperture may be arranged to provide access to the prime mover. Advantageously, the access apertures provide access through the chassis to the prime mover located inside the chassis for assembly and maintenance operations. The dumper vehicle may comprise a mounting arrangement configured to rotatably mount the operator seat to the operator cab. The at least one access aperture may be arranged to provide access to the mounting arrangement. Advantageously, the access apertures provide access through the chassis to the mounted arrangement located inside the chassis for assembly and maintenance operations.

[0030] The dumper vehicle may comprise a hydraulic system comprising a hydraulic fluid line arranged below the floor plate of the operator cab and configured to supply fluid to one or more hydraulic actuators of the dumper vehicle. The access aperture may be arranged to provide access to the hydraulic hoses.

[0031] Advantageously, the access apertures provide access through the chassis to the hydraulic hoses located inside the chassis for assembly and maintenance operations. For example, the access apertures may be used to access the connection points of the hydraulic hoses.

[0032] The ground engaging structure may comprise a front axle with a pair of front wheels mounted thereto and a rear axle with a pair of rear wheels mounted thereto. The undercarriage may comprise at least one removable fender located above one of the wheels.

[0033] Advantageously, the at least one fender provides protection to the wheels and other adjacent components by providing a guard from debris and other objects during operation of the dumper vehicle. Additionally, the at least one fender improves cleanliness of the dumper vehicle by guarding the chassis from debris and dirt.

[0034] The access aperture may be located on the chassis behind the fender. The removable fender may be the access panel for providing access to the cut-out section of the chassis.

[0035] Advantageously, using the fender to provide access to the access aperture uses existing components of the dumper vehicle as access panels, thereby reducing complexity of the dumper vehicle.

[0036] The access panel may define a width, and the width of the access panel may be greater than 0.5m, optionally greater than 0.6m, optionally greater than 0.7m, for example 0.75m.

[0037] Advantageously, width within these ranges have been found to provide a desirable area for an operator to perform assembly and maintenance operations.

[0038] The access panel may be an uppermost panel of the fender. Optionally the access panel may be a central panel of the fender.

[0039] The dumper vehicle may comprise a first removable fender located on a left side of the dumper vehicle above the rear left-side wheel and a second removable fender located on the right side of the dumper vehicle above the rear right-side wheel. The chassis may comprise a cut-out section located behind each of the first and second removable fenders.

[0040] The operator cab may be resiliently mounted to the chassis via a resilient mounting arrangement.

[0041] The chassis may comprise a main chassis and an articulated front chassis. The operator cab may be mounted to the main chassis and the container may be mounted to the front chassis.

[0042] An aspect of the teachings provides a dumper vehicle. The dumper vehicle may comprise a chassis and a ground engaging propulsion structure mounted to the chassis. The vehicle may have an open topped container for carrying a load therein supported by the chassis, the container moveable between a transport position for transporting a load and a discharge position for discharging of a load. An operator cab may be mounted to the chassis. An operator seat may be provided in the operator cab. The operator seat may be moveable between a front facing position in which the operator seat faces the container and a rear facing position, wherein the front facing position is primarily for off-highway driving and the rear facing position is primarily for on-highway driving. A drive arrangement may be supported by the chassis and configured to provide, at least in part, tractive power to the ground engaging propulsion structure. The drive arrangement may be configured to operate in a first mode corresponding to the front facing position of the operator seat and a second mode corresponding to the rear facing position of the operator seat. The drive arrangement may be housed within a body or bodywork portion of the dumper vehicle.

[0043] The dumper vehicle may comprise a cooling arrangement comprising a cooling pack. The cooling pack may be located between the prime mover and a rear wall panel of the chassis such that the operator seat faces the rear wall panel of the chassis in the rear facing position.

[0044] The rear wall panel may be the wall panel located on the chassis remote from the container.

[0045] The rear wall panel may comprise a grill arrangement comprising a plurality of apertures configured to receive a flow of air therethrough. The grill arrangement may occupy at least half of the rear wall panel. Optionally the grill arrangement may occupy at least two thirds of the rear wall panel.

[0046] The cooling pack may be mounted to the chassis behind the rear wall panel thereof. The cooling pack may comprise a cooling fan configured to draw air through the rear wall panel to cool the prime mover. The cooling pack may comprise the cooling fan mounted to a radiator panel. The cooling fan may be configured to draw air through the rear wall panel towards the radiator panel.

[0047] The cooling fan may be configured to draw air over the engine prior to exhausting the air via the rear wall panel.

[0048] The rear wall panel may comprise a cooling pack portion and an air intake portion. The cooling pack portion may be predominantly located on a first side of the rear wall with respect to the principal axis of the dumper vehicle and the air intake portion may be located predominantly on a second side of the principal axis of the dumper vehicle.

[0049] The cooling arrangement may be configured to direct airflow from inside the chassis, through the cooling pack and through the cooling pack portion of the rear wall panel of the chassis.

[0050] The cooling arrangement may comprise a deflector arrangement configured to direct air from the cooling pack through the cooling pack portion of the rear wall panel. Optionally the deflector arrangement may comprise at least one baffle.

[0051] A flow path of air may be through the air intake portion of the rear wall panel, through the cooling pack and out the cooling pack portion of the rear wall panel may be substantially U-shaped in plan view.

[0052] The cooling arrangement may comprise a condenser. The condenser may be located in front of the prime mover and the cooling pack may be located rearward of the prime mover.

[0053] The cooling arrangement may comprise a condenser cooling fan located on the same side of the prime mover as the condenser.

[0054] The chassis may comprise at least one access aperture located below the operator cab for providing access to the drive arrangement

[0055] The chassis may comprise an access panel connected to the chassis and arranged to at least partially cover the access aperture to form a cover for the cut-out section.

[0056] The at least one access aperture may be arranged to provide access to the prime mover.

[0057] The dumper vehicle may comprise a mounting arrangement configured to rotatably mount the operator seat to the operator cab. The at least one access aperture may be arranged to provide access to the mounting arrangement.

[0058] The dumper vehicle may comprise a hydraulic system comprising a hydraulic fluid line arranged below the floor plate of the operator cab and configured to supply fluid to one or more hydraulic actuators of the dumper vehicle. The access aperture may be arranged to provide access to the hydraulic hoses. The ground engaging structure may comprise a front axle with a pair of front wheels mounted thereto and a rear axle with a pair of rear wheels mounted thereto. The undercarriage may comprise at least one removable fender located above one of the wheels.

[0059] The access aperture may be located on the chassis behind the fender. The removable fender may be the access panel for providing access to the cut-out section of the chassis.

[0060] The access panel may define a width, and the width of the access panel may be greater than 0.5m, optionally greater than 0.6m, optionally greater than 0.7m, for example 0.75m.

[0061] The access panel may be an uppermost panel of the fender. Optionally the access panel may be a central panel of the fender.

[0062] The dumper vehicle may comprise a first removable fender located on a left side of the dumper vehicle above the rear left-side wheel and a second removable fender located on the right side of the dumper vehicle above the rear right-side wheel. The chassis may comprise a cut-out section located behind each of the first and second removable fenders.

[0063] The operator cab may be resiliently mounted to the chassis via a resilient mounting arrangement.

[0064] The chassis may comprise a main chassis and an articulated front chassis. The operator cab may be mounted to the main chassis and the container may be mounted to the front chassis.

[0065] An aspect of the teachings provides a dumper vehicle. The dumper vehicle may comprise a chassis and a ground engaging propulsion structure mounted to the chassis. The vehicle may have an open topped container for carrying a load therein supported by the chassis, the container moveable between a transport position for transporting a load and a discharge position for discharging of a load. An operator cab may be mounted to the chassis. An operator seat may be provided in the operator cab. The operator seat may be moveable between a front facing position in which the operator seat faces the container and a rear facing position, wherein the front facing position is primarily for off-highway driving and the rear facing position is primarily for on-highway driving. A drive arrangement may be supported by the chassis and configured to provide, at least in part, tractive power to the ground engaging propulsion structure. The drive arrangement may be configured to operate in a first mode corresponding to the front facing position of the operator seat and a second mode corresponding to the rear facing position of the operator seat. The drive arrangement may be housed within a body or bodywork portion of the dumper vehicle. The chassis may comprise at least one access aperture located below the operator cab for providing access to the drive arrangement The chassis may comprise an access panel connected to the chassis and arranged to at least partially cover the access aperture to form a cover for the cut-out section.

[0066] The at least one access aperture may be arranged to provide access to the prime mover.

[0067] The dumper vehicle may comprise a mounting arrangement configured to rotatably mount the operator seat to the operator cab. The at least one access aperture may be arranged to provide access to the mounting arrangement.

[0068] The dumper vehicle may comprise a hydraulic system comprising a hydraulic fluid line arranged below the floor plate of the operator cab and configured to supply fluid to one or more hydraulic actuators of the dumper vehicle. The access aperture may be arranged to provide access to the hydraulic hoses.

[0069] The ground engaging structure may comprise a front axle with a pair of front wheels mounted thereto and a rear axle with a pair of rear wheels mounted thereto. The undercarriage may comprise at least one removable fender located above one of the wheels.

[0070] The access aperture may be located on the chassis behind the fender. The removable fender may be the access panel for providing access to the cut-out section of the chassis.

[0071] The access panel may define a width, and the width of the access panel may be greater than 0.5m, optionally greater than 0.6m, optionally greater than 0.7m, for example 0.75m.

[0072] The access panel may be an uppermost panel of the fender. Optionally the access panel may be a central panel of the fender.

[0073] The dumper vehicle may comprise a first removable fender located on a left side of the dumper vehicle above the rear left-side wheel and a second removable fender located on the right side of the dumper vehicle above the rear right-side wheel. The chassis may comprise a cut-out section located behind each of the first and second removable fenders.

[0074] The operator cab may be resiliently mounted to the chassis via a resilient mounting arrangement.

[0075] The chassis may comprise a main chassis and an articulated front chassis. The operator cab may be mounted to the main chassis and the container may be mounted to the front chassis.

[0076] The drive arrangement may comprise a prime mover defining an elongate axis that is arranged transversely with respect to the fore-aft axis of the dumper vehicle.

[0077] The prime mover may be located underneath the operator cab. Optionally, an entirety of the prime mover may be located beneath the operator cab. The dumper vehicle may comprise a cooling arrangement comprising a cooling pack. The cooling pack may be located between the prime mover and a rear wall panel of the chassis such that the operator seat faces the rear wall panel of the chassis in the rear facing position.

[0078] The rear wall panel may be the wall panel located on the chassis remote from the container.

[0079] The rear wall panel may comprise a grill arrangement comprising a plurality of apertures configured to receive a flow of air therethrough. The grill arrangement may occupy at least half of the rear wall panel. Optionally the grill arrangement may occupy at least two thirds of the rear wall panel.

[0080] The cooling pack may be mounted to the chassis behind the rear wall panel thereof. The cooling pack may comprise a cooling fan configured to draw air through the rear wall panel to cool the prime mover.

[0081] The cooling pack may comprise the cooling fan mounted to a radiator panel. The cooling fan may be configured to draw air through the rear wall panel towards the radiator panel.

[0082] The cooling fan may be configured to draw air over the engine prior to exhausting the air via the rear wall panel.

[0083] The rear wall panel may comprise a cooling pack portion and an air intake portion. The cooling pack portion may be predominantly located on a first side of the rear wall with respect to the principal axis of the dumper vehicle and the air intake portion may be located predominantly on a second side of the principal axis of the dumper vehicle.

[0084] The cooling arrangement may be configured to direct airflow from inside the chassis, through the cooling pack and through the cooling pack portion of the rear wall panel of the chassis.

[0085] The cooling arrangement may comprise a deflector arrangement configured to direct air from the cooling pack through the cooling pack portion of the rear wall panel. Optionally the deflector arrangement may comprise at least one baffle.

[0086] A flow path of air may be through the air intake portion of the rear wall panel, through the cooling pack and out the cooling pack portion of the rear wall panel may be substantially U-shaped in plan view.

[0087] The cooling arrangement may comprise a condenser. The condenser may be located in front of the prime mover and the cooling pack may be located rearward of the prime mover. The cooling arrangement may comprise a condenser cooling fan located on the same side of the prime mover as the condenser.

[0088] BRIEF DESCRIPTION OF DRAWINGS

[0089] Embodiments will now be described by way of example only with reference to the accompanying figures, in which:

[0090] Figures 1A and IB are front and rear isometric views of a dumper vehicle according to an embodiment of the present teachings;

[0091] Figures 2A to 2C are perspective views of a main chassis of the dumper vehicle of Figures 1A and IB;

[0092] Figure 2D is a perspective view of an operator cab of the dumper vehicle of Figures 1A and IB;

[0093] Figure 2E is a perspective view of a portion of the operator cab of Figure 2D;

[0094] Figures 3A to 3C are side views of the main chassis and operator cab of the dumper vehicle of Figures 1A and IB;

[0095] Figure 4 is an partial view of an interior of the operator cab of Figures 1A and IB;

[0096] Figure 5A is a perspective view of an underside of the operator cab of Figures 1A and IB and an air flow duct;

[0097] Figure 5B is a perspective view of the airflow duct of Figure 5A;

[0098] Figure 5C is a perspective view of an operator cab of the dumper vehicle of Figures 1A and IB;

[0099] Figure 5D is a perspective view of a portion of the operator cab of Figure 5C;

[0100] Figure 6A is a front view of the operator seat subassembly of the operator cab of Figures 1A and IB;

[0101] Figure 6B is a side view of the operator cab of Figures 1A and IB;

[0102] Figure 7 is a partial view of the interior of the of the operator cab of Figures 1A and IB;

[0103] Figure 8 is a cross-sectional view of a mounting arrangement for mounting the operator seat to the operator cab; and

[0104] Figure 9 is a schematic view of a hydraulic fluid line of a hydraulic system of the dumper vehicle of Figures 1A and IB.

[0105] DETAILED DESCRIPTION

[0106] In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of various embodiments and the teachings. However, those skilled in the art will understand that: the present teachings may be practiced without these specific details or with known equivalents of these specific details; that the present teachings are not limited to the described embodiments; and, that the present teachings may be practiced in a variety of alternative embodiments. It will also be appreciated that well known methods, procedures, components, and systems may not have been described in detail.

[0107] References to vertical and horizontal in the present disclosure should be understood to be in relation to the machine when stood on horizontal ground in a non-working condition. The term axial is generally used in relation to the longitudinal axis of the machine.

[0108] With reference to Figure 1A, there is illustrated a dumper vehicle 10 according to an embodiment of the present teachings. The dumper vehicle 10 includes a chassis 12, a ground engaging propulsion structure 20, 22, an operator cab 24 and an open topped container 28.

[0109] The chassis 12 has a front end 14 and a rear end 16. The ground engaging propulsion structure 20, 22 is mounted to the chassis 12. The ground engaging propulsion structure 20, 22 includes a front axle with a pair of front wheels 20 mounted thereto and a rear axle 21 with a pair of rear wheels 22 mounted thereto. It shall be appreciated that in alternative embodiments, the ground engaging propulsion structure 20, 22 may include a pair of tracks.

[0110] The open topped container 28 for carrying a load therein, commonly referred to as a skip, is also mounted to the chassis 12. The container 28 is located at the front end 14 of the chassis 12. As such, the front of the dumper vehicle 10 is taken to be the end at which the container 28 is located, and the rear of the dumper vehicle 10 is taken to be the opposing end located remote from the container 28.

[0111] The container 28 is positioned above the front wheels 20, and a portion of the container 28 is located between the front wheels 20 and the rear wheels 22. The container 28 is pivotally mounted to the chassis 12, for example via a pivotable mount. This enables the container 28 to be moveable or pivotable between a transport position for transporting a load and a discharge position for discharging a load. In Figures 1A and IB, the container 28 is illustrated in the transport position. Although not illustrated, the dumper vehicle 10 includes an actuator to move of the container 28 between the transport positions and discharge position.

[0112] The chassis 12 is provided in two parts that are able to articulate with respect to each other. That is, the chassis 12 includes a main chassis 12a and a front chassis 12b. The rear wheels 22 are provided on the main chassis 12a and the front wheels 20 are provided on the front chassis 12b. The container 28 is mounted to the front chassis 12b. The main chassis 12a and the front chassis 12b are pivotally connected together via a linkage. The linkage may be such that the front chassis 12b is able to pivot or articulate up to an angle of 35° with respect to the main chassis 12a.

[0113] The dumper vehicle includes at least one wing mirror 32a, 32b mounted to the operator cab 24. In the embodiment shown in Figure IB, the wing mirrors 32a, 32b are mounted to the rear wall 24a of the operator cab 24 and face towards the front of the dumper vehicle 10. As such, the wing mirrors 32a, 32b enable the operator to view the container 28 when the operator seat 26 is in the rear facing position, thereby improving operator visibility.

[0114] The dumper vehicle 10 includes a drive arrangement, illustrated in Figures 2A to 2C. The drive arrangement is mounted to and supported by the chassis 12. In particular, the drive arrangement supported by the main chassis 12a. The drive arrangement is housed within a bodywork portion of the dumper vehicle 10. Such a bodywork portion may be considered to form a part of the chassis 12. The drive arrangement is configured to provide, at least in part, tractive power to the ground engaging propulsion structure 20, 22. The drive arrangement includes a prime mover 36. In the arrangement shown, the prime mover 36 is an internal combustion engine (ICE). It shall be appreciated that in alternative embodiments, the prime mover 36 may be an electric motor, hydrogen ICE, fuel cell or the like, and the dumper vehicle 10 may be an electric dumper vehicle 10. In further alternative embodiments, the dumper vehicle 10 may be a hybrid dumper vehicle 10 in which the prime mover 36 is provided as both an ICE and an electric motor, hydrogen ICE, fuel cell or the like.

[0115] The prime mover 36 defines an elongate axis that is arranged transversely with respect to a fore-aft axis of the dumper vehicle 10. In particular, the prime mover 36 includes an output, and the output is arranged transversely with respect to the fore-aft axis of the dumper vehicle 10. Providing a transversely orientated prime mover 36 enables the prime mover 36 to sit lower on the dumper vehicle 10, thereby reducing operator cab floor height and therefore the overall height of the dumper vehicle 10. Additionally, accessibility of the prime mover 36 for maintenance is improved by providing a transverse engine 36. As illustrated in Figure 2C, the prime mover 36 is at least partially located rearward of the rear axle 21. In some embodiments, a majority of the prime mover 36 may be located rearward of the rear axle 21. In the embodiment shown in Figure 2C, an entirety of the prime mover 36 is located rearward of the rear axle 21.

[0116] The chassis 12 includes at least one access aperture 13a, illustrated in Figures 2A to 2C, located below the operator cab 24 for providing access to the interior of the chassis 12. In the embodiment shown in Figures 2A to 2C, two access apertures 13a are provided located on opposing sides of the dumper vehicle 10, however any suitable number of access apertures 13a may be provided, for example one, three or four. The access apertures 13a are configured to provide access to the drive arrangement as well as alternative components accessible from the interior of the chassis 12. As such, the access apertures 13a provide access through the chassis 12 to components located inside the chassis 12 for assembly and maintenance operations. In the embodiment shown in Figures 2A to 2C, the access apertures 13a are located on the main chassis 12a. The access apertures 13a are located above the rear axle 21. In the embodiment shown in Figures 2A to 2C, the access apertures 13a are each substantially U-shaped, however any suitable shape cutout may be provided in any suitable location.

[0117] The access apertures 13a are configured to provide access to the prime mover 36. As such, the access apertures 13a are located adjacent the prime mover 36. The chassis 12 includes an access panel 23a connected to the chassis 12 and arranged to at least partially cover the access aperture 13a. In the embodiment of Figures 2A to 2C, as the two access apertures 13a are provided on opposing side of the dumper vehicle 10, two access panels 23a are provided for each of the access apertures 13a. The access panel 23a is removably mounted to the chassis 12 to provide access to the access aperture 13a.

[0118] The chassis 12 includes at least one fender 23 located above one of the wheels 20, 22. In the embodiment shown in Figures 2A to 2C, two fenders 23 are provided above each of the rear wheels 22. It shall be appreciated that in alternative embodiments, fenders 23 may be provided above the front wheels 20. The access aperture 13a may be located behind the fender 23.

[0119] As illustrated in Figure 2B, the fender 23 includes an access panel 23a which is removably mounted to the chassis 12. In this embodiment, the access panel 23a is the access panel 23a for providing access to the access aperture 13a of the chassis 12. As such, the access panel 23a is detachably mounted to the fender 23. The fenders 23 are illustrated in Figure 2B with the access panel 23a attached, and in Figure 2A and 2C with the access panel 23a detached. Using the fender 23 to provide access to the access aperture 13a uses existing components of the dumper vehicle 10 as access panels 23a, thereby reducing complexity of the dumper vehicle 10. It shall be appreciated that in alternative embodiments, separate access panels may be provided to form a cover over the access apertures 13a.

[0120] The access panel 23a is an uppermost panel of the fender 23, as illustrated in Figure 2B. The uppermost panel is located directly above the rear wheel 22. The access panel 23a is a central panel of the fender 23. The access panel 23a defines a width, and the width of the access panel 23a is greater than 0.5m, optionally greater than 0.6m, optionally greater than 0.7m, for example 0.75m. Widths within these ranges have been found provide a desirable area for an operator to perform assembly and maintenance operations. The dumper vehicle 10 includes a cooling arrangement, illustrated in Figure 2A to 2C, configured to cool the prime mover 36. The cooling arrangement includes a cooling pack 80. The cooling pack 80 is mounted to the chassis 12 behind a rear wall panel 15 of the dumper vehicle 10. Put another way, the cooling pack 80 is arranged behind the rear wall panel 15. As illustrated in Figures 2A to 2C, the cooling pack 80 is mounted to a rear wall 17 of the chassis 12. In particular, the cooling pack 82 is located between the prime mover 36 and the rear wall panel 15 of the dumper vehicle 10.

[0121] It shall be appreciated that the rear wall panel 15 is taken to be the wall panel 15 which is located on a remote end of the dumper vehicle 10 to the container 28. However, when the dumper vehicle 10 is in a transport position, the dumper vehicle 10 may be driven such that the rear wall panel 15 is frontward facing with respect to a direction of travel of the dumper vehicle 10.

[0122] The cooling pack 80 is configured to draw ambient air through the rear wall panel 15 to cool the prime mover 36. Proving a cooling arrangement which draws air through the rear wall panel 15 helps to provide efficient cooling of the prime mover 36 without supplying undesirable amounts of heat to the operator cab 24 (as the prime mover 36 is located below the operator cab 24). The cooling pack 80 includes a cooling fan 82 configured to draw ambient air through the rear wall panel 15. In addition, the cooling pack 80 includes a radiator panel 84. The cooling fan 82 is mounted to the radiator panel 84 to form the cooling pack 80. The cooling fan 82 is configured to draw air through the rear wall panel 15 towards the radiator panel 84.

[0123] The cooling fan 82 is mounted to the radiator panel 84 via a mounting frame 81, illustrated in Figure 2B. The mounting frame 81 is mounted to the rear wall 17 of the chassis 12 so as to mount the cooling pack 80 to the rear wall 17 of the chassis 12. The rear wall panel 15 is mounted to the rear wall 17 of the chassis 12 to form a cover over the cooling pack 80, in particular over the radiator panel 84 of the cooling pack 80.

[0124] The rear wall panel 15 includes a grill arrangement 15a, illustrated in Figure IB. The grill arrangement 15a includes a plurality of apertures configured to receive a flow of air therethrough. The apertures may be arranged in any suitable arrangement to permit the flow of air therethrough. In the embodiment shown in Figure IB, the grill arrangement 15a occupies at least half of the rear wall panel 15, for example at least two thirds of the rear wall panel 15. This arrangement enables airflow through both sides of the rear wall panel 15, and increases a volume of air which can pass through the rear wall panel 15.

[0125] The cooling pack 80 is mounted to the chassis 12 on a first side of the chassis 12 with respect to a fore-aft axis of the dumper vehicle 10, or on a cooling pack portion of the rear wall panel 15. As such, the cooling pack 80 is located on a first side of the rear wall panel 15. The cooling fan 82 is configured to draw air through an opposing second side of the rear wall panel 15, or through an air intake portion of the rear wall panel 15. Put another way, the cooling fan 82 is arranged to draw air through an opposing side of the rear wall panel 15 to the side of the wall panel 15 on which the cooling fan 82 is located. It shall therefore be appreciated that the cooling pack portion is predominantly located on a first side of the rear wall panel 15 with respect to principal axis of the dumper vehicle 10, and the air intake portion is located predominantly on a second side of the principal axis of the dumper vehicle 10.

[0126] A sealing arrangement may be provided to help prevent or reduce airflow through the first side of the rear wall panel 15. In particular, the sealing arrangement may prevent the cooling fan 82 from drawing air through the cooling pack portion of the rear wall panel 15 and over the radiator panel 84. In some embodiments, the cooling pack 80 may be sealed to the grill arrangement 15a. It shall be appreciated that any suitable sealing arrangement may be provided to help prevent or reduce airflow through the cooling pack portion of the rear wall panel 15.

[0127] The rear wall 17 of the chassis 12 includes an aperture 86 configured to receive a flow of air therethrough. As such, a flow path is defined by the cooling fan 82 drawing air through the air intake portion of the rear wall panel 15 and through the aperture 86 to inside of the chassis 12 to cool the prime mover 36. The aperture 86 is located on the rear wall 17 adjacent the radiator panel 84. In particular, the aperture 86 is located on the air intake portion of the rear wall panel 15 and the radiator panel 84 is located on the cooling pack portion of the rear wall 17.

[0128] The cooling fan 84 is configured to direct airflow over the cooling pack 80 and through the cooling pack portion of the rear wall panel 15. As such, air enters the chassis 12 through the air intake portion of the rear wall panel 15, and exits through the cooling pack portion of the rear wall panel 15. The rear wall panel 15 therefore acts as an air inlet on the first side (or air intake portion) and an air outlet on the second side (or cooling pack portion). As such, some or part of the apertures of the grill arrangement 15a are inlet apertures, and some or part of the apertures of the grill arrangement 15a are outlet apertures. In particular, the apertures located on the air intake portion are inlet apertures, and the apertures located on the cooling pack portion are outlet apertures. In the embodiment shown in Figure 2C, the first side (or cooling pack portion) is larger in width than the second side (air intake portion). As such, although the terms "first side" and "second side" are used, the sides mat be different sizes or the same size. In some embodiment, the second side (or air intake portion) may have a greater width than the first side (or cooling pack portion). A flow path of air is defined through the air intake portion of the rear wall panel 15, through the cooling pack 80 and out through the cooling pack portion of the rear wall panel 15. In particular, the flow path is defined through the air intake portion of the rear wall panel 15, through the aperture 86, into the chassis 12 which houses the prime mover 36, over the prime mover 36, through the cooling pack 80 and out through the cooling pack portion of the rear wall panel 15. The flow path turns through 180° such that the inlet air flows in an opposite direction to the outlet air. In particular, the flow path is substantially U-shaped in plan view. It shall be appreciated that substantially U- shaped is taken to mean that the flow path may not be exactly U-shaped. For example, the inlet and outlet flow of air may not be parallel to one another, and / or may enter at an angle with respect to the fore-aft axis of the dumper vehicle 10.

[0129] The cooling arrangement includes a deflector arrangement (not shown) configured to direct air from the inside of the chassis 12, through the cooling pack 80 and through the cooling pack portion of the rear wall panel 15. The deflector arrangement may include any suitable number of baffles to direct air through the cooling pack portion of the rear wall panel 15.

[0130] The cooling arrangement enables cooling air to be drawn through the air intake portion of the rear wall panel 15, circulate the engine bay and be pushed through the cooling pack 80, thereby reducing opportunities for pockets of hot air to develop and reducing the likelihood of undesirable levels of heat energy being transferred to the operator cab 24.

[0131] In the embodiment shown in Figures 2A to 2E, the cooling arrangement includes a condenser 90. The condenser 90 and the cooling pack 80 are located at opposing front and rear sides of the prime mover 36. In particular, the cooling pack 80 is located rearward of the prime mover 36 and the condenser 88 is located frontward of the prime mover 36. The cooling arrangement includes a condenser cooling fan 92 located on the same side of the prime mover 36 as the condenser 90. This enables the condenser cooling fan 92 to efficiently cool the condenser 90. The condenser 90 and condenser cooling fan 92 help to mitigate stagnant air within the engine housing, particularly stagnant air caused by drafts / cross flow.

[0132] The condenser 90 and the condenser cooling fan 92 are illustrated in Figures 2D and 2E. The condenser cooling fan 92 draws ambient air over the condenser 90. The condenser cooling fan 92 is mounted to the condenser 90, for example using any suitable mounting arrangement. In the embodiment shown in Figure 2E, first and second condenser cooling fans 92 are provided. It shall be appreciated that in alternative embodiments, any suitable number of condenser cooling fans 92 may be provided, for example one condenser cooling fan 92, or three condenser cooling fans 92. The condenser 90 and the condenser cooling fan 92 are mounted to the front of the operator cab 24. In particular, the condenser 90 and the condenser cooling fan 92 are located on an outermost surface of the front wall 24a of the operator cab 24 (i.e. outside of the operator cab 24). A cover panel 92a is mounted to the front wall 24a, as illustrated in Figure 2D, to form a cover over the condenser 90 and the condenser cooling fan 92. Figure 2D shows the dumper vehicle 10 with the cover panel 92a attached to the front wall 24a, and Figure 2E shows the dumper vehicle 10 with the cover panel 92a removed from the front wall 24a, revealing the condenser cooling fan 92.

[0133] The location of the condenser 90 and the condenser cooling fan 92 helps to improve airflow over the condenser 90. In particular, mounting the condenser 90 and the condenser cooling fan 92 outside of the operator cab 24 helps to prevent components of the operator cab 24 and / or the chassis 12 from obstructing airflow. In addition, visibility out of the operator cab 24 is improved because the condenser 90 and condenser cooling fan 92 do not obstruct the view of the operator, as they would if they were located in the operator cab 24. Instead, the condenser 90 and condenser cooling fan 92 have been moved to a location where alternative components of the dumper vehicle 10, for example control panels, are already located.

[0134] It shall be appreciated that in alternative embodiments, the condenser 90 and the condenser cooling fan 92 may be located within the operator cab 24, or within the chassis 12, by way of example.

[0135] The dumper vehicle 10 includes a hydraulic system configured to provide hydraulic fluid to components of the dumper vehicle 10. The hydraulic system includes a hydraulic pump coupled to the prime mover 36. The hydraulic pump is configured to be driven by the prime mover 36. The hydraulic pump may be used to drive at least one hydraulic motor which in turn is configured to drive movement of the ground engaging structure 20, 22. In addition, the hydraulic pump may be configured to drive one or more hydraulic actuators for moving the container 28 between the transport and discharge position.

[0136] The hydraulic system includes a hydraulic fluid line 60. The hydraulic fluid line 60 includes a set of hydraulic hoses 60. The hydraulic fluid line 60 provides a pathway for hydraulic fluid to flow from the chassis 12 to alternative locations of the dumper vehicle 10, for example the hydraulic actuators. In particular, the hoses connect the hydraulic pump to alternative locations on the dumper vehicle 10, for example the hydraulic actuators, as will be described in more detail below.

[0137] The operator cab 24 is mounted to the chassis 12. The operator cab 24 includes an operator seat 26 in said operator cab 24, said operator seat 26 moveable between a front facing position in which the operator seat 26 faces the container 28 and a rear facing position. The drive arrangement is operable in a first mode corresponding to the front facing position of the operator seat 26 and a second mode corresponding to the rear facing position of the operator seat 26. As such, the dumper vehicle 10 is operable in both the front and rear facing positions of the operator seat 26.

[0138] The operator cab 24 is supported by the main chassis 12a in the embodiment shown in the Figures. The operator cab 24 is mounted to the chassis 12 by a resilient mounting arrangement 50, illustrated in Figures 3A to 3C. Providing a resilient mounting arrangement 50 helps to reduce transmission of noise and vibration to the operator cab 24, thereby increasing noise vibration and harshness (NVH) performance of the dumper vehicle 10. Additionally, providing a resilient mounting arrangement 50 raises a height of the operator cab 24 relative to the chassis 12, thereby providing space for locating components of the dumper vehicle 10. For example, components may be moved from the operator cab 24 in order to improve visibility in the operator cab 24, as will be described in more detail below.

[0139] The resilient mounting arrangement 50 includes a plurality of resilient mounts 50 configured to mount the operator cab 24 to the chassis 12. The resilient mounts 50 are discrete from one another. In particular, the resilient mounts 50 are located between the operator cab 24 and the chassis 12. Figure 3B illustrates the resilient mounts 50 connected to the operator cab 24, and Figure 3C illustrated the resilient mounts 50 connected to the chassis 12. It shall be appreciated that the resilient mounts in Figures 3B and 3C are the same, and are connected to both the operator cab 24 and the chassis 12. As illustrated in Figure 3B, the resilient mounts 50 are connected to an underside of the operator cab 24. As illustrated in Figure 3C, the chassis 12 includes a plurality of mounting plates 52, and the resilient mounts 50 are each mounted to a mounting plate 52 of the chassis 12. As such, the operator cab 24 is resiliently mounted to the chassis 12.

[0140] In the embodiment shown in Figures 3A to 3C, four resilient mounts 50 are provided. The resilient mounts 50 are each located at a corner of the operator cab 24. This helps to improve weight distribution of the operator cab 24, and improves uniformity of the damping across the operator cab 24. It shall be appreciated that in alternative embodiments, any suitable number of resilient mounts 50 may be provided, for example five resilient mounts or six resilient mounts. The resilient mounts 50 may be located at any suitable location on the chassis 12 and operator cab 24.

[0141] Each resilient mount 50 includes a body 50a and a fastening member 50b extending therethrough, as illustrated in Figures 3B and 3C. The body 50a includes a resiliently deformable material. For example, the body 50a may be at least partially formed from an elastomeric material, for example rubber. The body 50a is interposed between the chassis 12 and the operator cab 24 such that the resiliently deformable material reduces transmission of noise and vibration from the chassis 12 to the operator cab 24. Each fastening member 50b is configured to connect the body 50a to the operator cab 24 and the chassis 12. In the embodiment shown in Figures 3B and 3C, the fastening member 50b is a bolt, however any suitable fastening member 50b may be used. The fastening member 50b extends substantially through a centre of the body 50a. In order to mount the resilient mounts 50 to the operator cab 24 and the chassis 12, the bolts also extend through the mounting plates 52 of the chassis 12 and through the underside of the operator cab 24.

[0142] It shall be appreciated that in alternative embodiments, any suitable arrangement of resilient mounts may be provided.

[0143] The operator cab 24 is substantially hexagonal in plan view. As such, the operator cab 24 includes six sidewalls 24a-f forming the hexagonal operator cab 24. Providing a substantially hexagonal operator cab 24 helps to improve operator visibility out of the operator cab 24. It shall be appreciated that in alternative embodiments, the operator cab 24 may be any suitable shape in plan view, for example substantially pentagonal or substantially rectangular. The sidewalls 24a-f extend between an operator cab roof 24g and a floorplate 24h. As such, the sidewalls 24a-f, operator cab roof 24g and floorplate 24h form an enclosed cab.

[0144] In the embodiment shown in the Figures, the plurality of walls 24a-f includes a front wall 24a, a rear wall 24b, a pair of sidewalls 24c, 24e extending from the front wall 24a and angled with respect to the fore-aft axis of the dumper vehicle 10 in a frontward direction, and a pair of rear sidewalls 24d, 24f extending from the rear wall 24b and angled with respect to the fore-aft axis of the dumper vehicle 10 in a rearward direction. The pair of sidewalls 24c, 24e are located on opposing sides of the fore-aft axis and the pair of sidewalls 24d, 24f are located on opposing sides of the fore-aft axis.

[0145] The operator cab 24 includes a plurality of windows 25a-e and a door 25f. In the embodiment shown in Figures 1A and IB, each wall 24a-e includes a window 25a-e and the wall 24f includes the door 25f. Accordingly, five windows 25a-e are provided and one door 25f. It shall be appreciated that in alternative embodiments, more than one door 25f may be provided, and / or some of the walls 24a-f may not include windows 25a-e.

[0146] Each window 25a-e includes a window panel or pane that is located in a frame. The widow panel and frame of each window 25a-e defines the sidewall 24a-e. The door 25f is hingedly mounted to a fixed outer frame to define the side wall 24f. It shall be appreciated that in alternative embodiments, the doors and windows may be of any suitable configuration. In the embodiment shown in Figure IB, the sidewall 24f including the door 25f is one of the pair of rear sidewalls 24f. It shall be appreciated that in alternative embodiments, the door 25f may be located on one of the front sidewalls 24a-e. The dumper vehicle 10 includes an access step arrangement 18a-c configured to provide access to the operator cab 24, in particular to provide access to the operator cab 24 through the door 25f. As such, the access step arrangement 18a-c is located on the same side of the dumper vehicle 10 as the door 25f. In particular, the access step arrangement 18a-c is located directly below the door 25f.

[0147] The door 25f is a glass door. It shall be appreciated that in alternative embodiments, the door 25f may be formed from any suitable translucent material. An entirety of the door 25f is formed from glass. As such, the door 25f is a transparent door. At least one of the plurality of windows 25a-e and / or the glass door 25f extends from the floorplate 24h of the operator cab 24 and occupies a majority of a height of the operator cab 24. Put another way, at least one of the plurality of windows 25a-e and / or the glass door 25f extends from the floorplate 24h to the cab roof 24g. In this way, at least one of the plurality of windows 25a-e and / or the glass door 25f is provided as a full height window or door. As described above, the operator cab 24 may be substantially hexagonal in plan view. In such embodiments, the operator cab 24 may include a full height window or door, as described above, on opposing side walls of the hexagonal operator cab 24. Each full height window or door may be located on sidewalls of the operator cab 24 which are angled with respect to the fore-aft axis of the dumper vehicle. Providing a window or a door 25a-f extending from the floorplate 25a improves visibility from the operator seat 26, particularly visibility in a direction towards the ground engaging propulsion structure 20, 22, thereby improving safety of the dumper vehicle 10, particularly if a person is located adjacent the dumper vehicle 10. As such, a line of sight from inside the operator cab 24 and through the at least one window 25a-e or door 25f is unobstructed, for example an entirety of the window or door 25a-f is unobstructed.

[0148] As illustrated in Figure 1A, the at least one window 25c is a floor to ceiling window 25c which occupies substantially an entirety of the height of the operator cab 24 and the door 25f occupies substantially an entirety of the height of the operator cab 24. Put another way, the at least one window 25c and / or the door 25f occupies an entirety of a distance between the floorplate 24h and the cab roof 24g. This maximises visibility through said window or door 25c, 25f.

[0149] In the embodiment shown in Figure 1A, the at least one window 25c is a front side window 25c. As such, the window 25c is located on one of the front sidewalls 25c. In particular, there is a window 25c located on the first side of the operator cab 24, and the door 25f is located on the second side of the operator cab 24. As such, visibility is improved on both sides of the dumper vehicle 10. It shall be appreciated that in alternative embodiments, the door 25f and window 25c may be swapped round. Furthermore, it shall be appreciated that any of the windows 25a-e, or any combination thereof, may be floor to ceiling windows 25a-e.

[0150] The operator cab 24 includes an interior trim part 56, illustrated in Figure 4. Trim parts or panels are provided with an operator cab to finish the interior of the operator cab 14. Put another way, these interior trim parts are provided as decorative parts or panels that improve the aesthetic appearance within the operator cab 14. In some embodiments, these interior trim parts may be provided to cover a structural element of the operator cab 14, for example a structural pillar of the operator cab 14. In other embodiments, the interior trim parts may be a part of door panels, control consoles, steering consoles, or any other suitable component.

[0151] The interior trim part 56 is located inside the operator cab 24. The interior trim part 56 includes a grip feature 58 formed in a surface thereof. The grip feature 58 enables the operator to rotate the operator seat 26 between the front and rear facing positions by gripping the grip feature 58 and pulling the operator seat 26 towards or away from the interior trim part 56. This helps to negate the need for handles, or reduces the number of handles, thereby increasing the amount of space in the operator cab 24 and increasing operator comfort. Additionally, removing or reducing the number of handles may also improve operator visibility. The trim part 56 including the grip features 58 may be located on a pillar within the operator cab 24. In the illustrated embodiment, the trim part 56 is located on a B-pillar. A B-pillar is the rearward-most structural pillar within the operator cab 24, supporting a roof of the operator cab 14 on opposing sides of the cab. In other embodiments, the trim part 56 including the grip feature 58 may be provided on an A- pillar, or on both an A-pillar and a B-pillar.

[0152] The interior trim part 56 may be manufactured using an injection moulding process. As such, the grip feature 58 can be formed with the interior trim part 56 without complex post-processing steps, thereby simplifying manufacture.

[0153] The grip feature 58 is a recess 58 located in a surface of the interior trim part 56. Put another way, the recess 58 extends into a continuous external surface of the interior trim part 56. In particular, the recess 58 is an elongate recess 58 on the surface of the interior trim part 56. When the interior trim part 56 is attached to the post, the elongate recess extends substantially parallel to a central longitudinal axis of the post. It shall be appreciated that in alternative embodiments, any suitable grip feature 58 may be used, for example a plurality of recesses. The recesses may be any suitable shape, for example shaped to conform to a shape of a user's fingers.

[0154] The recess 58 defines a length, a width and a depth. The length is an elongate length which extends parallel to the central longitudinal axis of the post, the depth extends into the interior trim part 56 and the width extends perpendicular to the length and height. The length of the recess 58 may be in the range 100mm to 700mm, optionally in the range 200mm to 600mm, for example in the range 300mm to 500mm. In the embodiment shown in Figure 4, the length of the recess 58 is approximately 400mm. The width of the recess 58 may be in the range 40mm to 200mm, optionally in the range 60mm to 180mm, optionally in the range 80mm to 160mm, for example in the range 100mm to 140mm. In the embodiment shown in Figure 4, the width of the recess 58 is approximately 120mm. The depth of the recess 58 may be in the range 10mm to 80mm, optionally in the range 20mm to 70mm, optionally in the rage 30mm to 60mm, for example in the range 40mm to 50mm. It shall be appreciated that in alternative embodiments, the recess 58 may be any suitable length, width, and / or depth.

[0155] The grip feature 58 is located at least partially in an uppermost region of the operator cab 24. Put another way, the grip feature 58 is located closer to the operator cab roof 24g than to the floorplate 24h. This helps to ensure the operator can reach the grip feature 58 to move the operator seat 26 between the front facing position and the rear facing positions. As illustrated in Figure 2D, the grip feature 58 is located at least partially, for example entirely, above a seat portion of the operator seat 26.

[0156] The operator cab 24 includes a HVAC system configured to provide climate control within the operator cab 24. As illustrated in Figures 5A and 5B, the HVAC system includes an airflow duct 78 located below the operator cab 24, for example below the floorplate 24h of the operator cab 24. In particular, the airflow duct 78 is located below the floorplate 24h of the operator cab 24. This arrangement moves components of the HVAC system such as the airflow duct 78 out of the line of sight of the operator, thereby improving operator visibility. The airflow duct 78 includes a mounting arrangement 79 configured to mount the airflow duct 78 to the operator cab 24. In particular, the airflow duct 78 is mounted to an underside of the floorplate 24h, as illustrated in Figure 5A. The mounting arrangement includes a plurality of bores 79, illustrated in Figure 5B, configured to receive a corresponding fastener. The bores 79 are located on protrusions extending from the airflow duct 78. In the embodiment shown in Figure 5A, the bores 79 and protrusions are moulded with the airflow duct 78.

[0157] It shall be appreciated that in alternative embodiments, any suitable mounting arrangement may be used to mount the airflow duct 78 to the operator cab 24. The airflow duct 78 includes an inlet 78a connected to a HVAC module 94 of the HVAC system. The HVAC module 94 may be located in the operator cab 24. In particular, the HVAC module 94 may be located on one of the sidewalls 24a-e of the operator cab 24, as illustrated in Figures 5C and 5D. The HVAC module 94 is mounted to the operator cab 24 and located underneath a cover panel 94a. Figure 5C shows the cover panel 94a attached to the operator cab 24, and Figure 5D shows the cover panel 94a removed from the operator cab 24 to reveal the HVAC unit 94. In the embodiment shown in Figures 5C and 5D, the HVAC module 94 is mounted to an opposing sidewall 24d of the operator cab 24 to the cab door 24f. In particular, the HVAC module 94 is mounted to the rear sidewall 24d which is located on the opposite side of the operator cab 24 to the cab door 24f. It shall be appreciated that in alternative embodiments, the HVAC module 94 may be located at any possible location on the dumper vehicle 10, for example at any location in the operator cab 24 or on any of the sidewalls 24a-e.

[0158] In the embodiment shown in Figures 5A and 5B, the airflow duct 78 includes a plurality of outlets 78b. The plurality of outlets 78b improve the distribution of air around the operator cab 24, thereby improving operator comfort. It shall be appreciated that in alternative embodiments, the HVAC system, including the airflow duct 78, may be located at any suitable location, including in the operator cab 24.

[0159] The operator seat 26 is rotatably mounted within the operator cab 24 via a rotatable operator seat platform 40. In the embodiment shown in Figures 5A and 5B, the operator seat platform 40 is a turntable, however any suitable operator seat platform 40 may be provided. The operator seat platform 40 is located above the floorplate 24h. A distance or clearance d is provided between an underside of the operator seat platform 40 and the floorplate 24h, as illustrated in Figure 8. The distance d may be less than 100mm, for example less than 60mm, for example less than 40mm. In the embodiment shown in Figure 8, the distance d is 20mm. This provides a compact arrangement of the operator seat platform 40. It shall be appreciated that in Figure 8, the floorplate 24h is provided with a mat located thereon, however the distance of 20mm is measured between the floorplate 24h itself and the underside of the operator platform 26 (i.e. without the mat).

[0160] The operator seat 26 and the operator seat platform 40 are dimensioned to be able to pass through an opening 24f of the operator cab 26. In particular, in the embodiment shown in Figures 6A and 6B, the opening 24f is the door 24f of the operator cab 24, however an alternative opening in one of the sidewalls 24a-e may be provided. This arrangement enables the operator cab 24 to be mounted, for example resiliently mounted, to the chassis 12 prior to the operator seat 26 and the operator seat platform 40 being assembled to the operator cab 24. As such, once the operator cab 24 been mounted to the chassis 12, the operator seat 26 and operator seat platform 40 can be passed through the opening 24f in the operator cab 24 and assembled to the operator cab 24.

[0161] In the embodiment shown in Figures 6A and 6B, the operator seat 26 and the operator seat platform 24 form a subassembly 42. The subassembly 42 is dimensioned to be able to pass through the opening 24f in the operator cab 24. In the embodiment shown in Figures 6A and 6B, the operator seat 26 and the operator seat platform 40 are inserted or passed through the opening 24f during assembly as the subassembly 42. In alternative embodiments, the operator seat platform 40 may be inserted through the opening 24f and assembled to the operator cab 24, and then the operator seat 26 may be inserted through the opening and assembled to the operator seat platform 40.

[0162] In this way, the dumper vehicle 10 may be assembled by first forming the chassis 12. The ground engaging propulsion structure 20, 22 is then mounted to the chassis 12, and the container is mounting to the chassis 12. The drive arrangement is also mounted to the chassis 12. It will be appreciated that the ground engaging propulsion structure, the container, and the drive arrangement may be mounted to the chassis 12 in any suitable order.

[0163] The operator cab 24 is then manufactured, and includes an opening 24f in a side wall thereof. The operator cab 24 is then mounted to the chassis 12. It will be appreciated that in some embodiments, the operator cab 24 may be provided in the form of a removable subassembly that can be removably mounted to the chassis 12. The operator seat and operator seat platform are assembled into a subassembly 42, which is then passed through the opening 24f of the operator cab 24. Finally, the rotatable operator seat platform is mounted to the chassis 12 such that the operator seat is moveable between a front facing position in which the operator seat faces the container and a rear facing position.

[0164] As illustrated in Figure 6A, a maximum width wl of the operator seat 26 and a maximum width w2 of the operator seat platform 40 are less than a maximum width w3 of the opening 24f. As such, this enables the subassembly 42 to be inserted sideways through the opening 24f. The subassembly 42 is inserted in a direction transverse to the opening 24f.

[0165] Put another way, the subassembly of the operator seat 26 and the operator seat platform 40 define a maximum width along an axis perpendicular to an elongate axis of the subassembly 42, and this maximum width is less than a width w3 defined by the opening in the operator cab 24. This enables the subassembly is able to pass through the opening. Providing a seat subassembly that is able to be inserted into and mounted to the operator cab 24 after the cab 24 has been mounted to the chassis 12 enables the operator cab 24, i.e. the frame of the operator cab 24, to be provided as a removable subassembly. The frame of the operator cab 24 may include one or more structural members for supporting a roll-over protective structure (ROPS) or a falling-object protective structure (FOPS).

[0166] The subassembly 42 further includes a control console 44 mounted to the operator seat platform 40 and moveable with the operator seat 26 between the front facing and rear facing positions. It shall be appreciated that in some embodiments, the subassembly 42 may also include at least one of, or any combination of: at least one window; at least one door; a lighting arrangement; a cab roof 24gl; a floorplate 24h; an electronic control unit; and / or a HVAC system, for example comprising a HVAC unit 84 and / or a ducting arrangement, for example an airflow duct 78.

[0167] The control console 44 includes at least one control device 46 mounted thereto. The at least one control device 46 includes any one or any combination of: a steering control 44, pedals and / or levers and switches for controlling movement of the dumper vehicle 10 and / or operation of the container 28. The rotatable control console 44 helps to facilitate control of the dumper vehicle 10 in both the front facing and rear facing positions of the operator seat 26, thereby improving versatility and operator visibility. In particular, the dumper vehicle 10 may be operated with the operator seat 26 in the front facing position during an operation of the container 28, and with the operator seat 26 in the rear facing position when the dumper vehicle 10 is being driven along the ground. This helps to optimise the view of the operator depending on the operation of the dumper vehicle 10.

[0168] Providing the controls on the control console 44 helps to improve operator visibility by moving the controls out of the line of sight of the operator. In known dumper vehicles 10, such controls are commonly located on or in front of the sidewalls 24a-f of the operator cab, thereby obstructing operator visibility. In the embodiment of the Figures, the control console 44 is spaced apart from the sidewalls 24a-f of the operator cab 24. In particular, there are no controls, for example none of the control devices 44 listed above, located on the sidewalls 24a-f of the operator cab 24. Put another way, all controls for controlling movement of the dumper vehicle 10 or movement of the container are provided on the subassembly 42. As such, visibility through the windows 25a-e and door 25f is unobstructed.

[0169] The operator seat platform 40 includes a channel or step 43 extending between the control console 44 and the operator seat 26. A height h of the channel 43 extending in a substantially vertical direction may be less than 80mm, optionally less than 70mm, for example less than 60mm. In the embodiment shown in Figure 7, the height h of the channel 43 is approximately 55mm.

[0170] The operator seat platform 40 includes a locking arrangement (not shown) configured to prevent movement of the operator seat platform 40 between the front facing position and the rear facing position. Put another way, the locking arrangement is configured to lock the operator seat platform 40 in either the front facing position and rear facing position. In order to overcome the locking arrangement and enable rotation of the operator seat platform 40 between the front facing and rear facing positions, the operator seat platform 40 includes an actuation member 70 on the operator seat platform 40. Providing the actuation member 70 on the operator platform 40 helps to eliminate the need for the operator to use their hands in operation to rotate the operator seat 26 between the front and rear facing positions. This keeps the operator in a comfortable position, and keeps both hands free for use to manually rotate the operator seat 26.

[0171] The actuation member 70 is arranged in front of the operator seat 26. Put another way, at least part of the actuation member 70 is located between the operator seat 26 and the operator console 42. As illustrated in Figure 7, the actuation member 70 is located proximate to an upper surface of the operator seat platform 40 for operation by an operator's foot. As such, the actuation member 70 may be located at any location proximate to the location of the operator's foot when the operator is sat in the operator seat 26, for actuation thereby. The actuation member 70 may be located on the right side of the operator seat 26 to be actuated by the right foot, or on the left side of the operator seat 26 to be actuated by the left foot, In the embodiment shown in Figure 7, the actuation member 70 is mounted to the operator platform 40 below the operator seat 26 at a first fixed end, and extends towards the operator console 42 and terminates at a free end. The operator contacts the free end to overcome the locking mechanism. The free end has a greater surface area than the fixed end. This maximises the contact area of the actuation member 70 which the operator's foot can actuate.

[0172] The actuation member 70 is moveable between a first position in which the locking arrangement is not overcome and a second position in which the locking arrangement is overcome. As such, in the first position of the actuation member 70 the operator seat platform 40 is fixed and in the second position of the actuation member 70 the operator seat platform 40 is free to rotate the operator seat 26 between the front facing and rear facing positions. The actuation member 70 includes a basing arrangement (not shown). The biasing arrangement is configured to bias the actuation member into the first position. Put another way, the biasing arrangement is configured to bias the actuation member 70 s that the locking arrangement is not overcome and the operator seat platform 40 is fixed.

[0173] In the embodiment shown in Figure 7, the actuation member 70 is a lever 70. The lever 70 is rotatable with respect to the operator seat platform 40 between the first and second positions. The lever 70 is configured to pivot about a substantially vertical axis parallel to an axis of rotation of the operator seat platform 40. The lever 70 is rotated from the first position in a direction away from the operator into the second position. It shall be appreciated that in alternative embodiments, an alternative actuation member may be provided, for example a button. It shall be appreciated that any suitable movement of the actuation member 70 may be used to overcome the locking arrangement, for example rotation about an alternative axis.

[0174] The dumper vehicle 10 includes a mounting arrangement 48, illustrated in Figure 8, configured to rotatably mount the operator seat platform 40 within and to the operator cab 24. The mounting arrangement 48 is at least partially located below the floorplate 24h of the operator cab 24. The airflow duct 78 of the HVAC system is arranged to extend around the mounting arrangement 48. Put another way, the airflow duct 78 is routed around the mounting arrangement 48. In particular, the airflow duct 78 is substantially curved, and the mounting arrangement 48 is located in the curved portion of the airflow duct 78. This provides a compact arrangement and enables both the mounting arrangement 48 and the airflow duct 78 to be located below the floorplate 24h.

[0175] In the embodiment shown in Figure 8, substantially an entirety of the mounting arrangement 48 is located below the floorplate 24h. The term "substantially an entirety" is taken to mean that the main components of the mounting arrangement 48 are located below the floorplate 24h, however that a component or components of the mounting arrangement 48 which connect to the operator seat platform 40 may be located above the floorplate 24h because the operator seat platform 40 is located above the floorplate 24h. Accordingly the arrangement of Figure 8 falls under the definition that substantially an entirety of the mounting arrangement 48 is located below the floorplate 24h.

[0176] Providing the mounting arrangement 48 below the floorplate 24h helps to reduce the risk of debris and entering the mounting arrangement 48, which may result in the mounting arrangement 48 becoming blocked and / or the operator getting their hand trapped trying to remove said dirt and debris. Additionally, providing the mounting arrangement 48 below the floorplate 24h reduces a height of the operator platform 40, thereby providing a compact arrangement.

[0177] The mounting arrangement 48 includes a bearing 48 configured to rotatably mount the operator seat platform 40 to the operator cab 24. In the embodiment shown in Figure 8, the bearing 48 is located at least partially frontward of the operator seat 26. In alternative embodiments, the bearing 48 may be located at least partially rearward of the operator seat 26, or vertically aligned with the operator seat 26. It is the bearing 48 which is located below the floorplate 24h of the operator cab 24. In particular, an uppermost face of the bearing 48 is located level with or below an uppermost face of the floorplate 24h, as illustrated in Figure 8. As such, the bearing 48 does not extend beyond the uppermost face of the floorplate 24h in a direction away from the chassis 12 (i.e. an upward or vertical direction).

[0178] The bearing 48 includes an inner race 48a, an outer race 48b and a plurality of bearing elements 48c located therebetween. In the embodiment of Figure 8, the bearing elements 48c are ball bearings 48c., however roller bearings or the like may be used. The inner race 48a is free to rotate with respect to the outer race 48a, as is known in the art. The outer race 48b is fixedly mounted to the operator platform 24. In particular, the outer race 48b is fixedly mounted to the underside of the operator cab 24. The inner race 48a is fixedly mounted to the operator seat platform 40. As such, the bearing 48 enables the operator seat platform 40 to rotate with respect to the operator cab 24.

[0179] The inner and outer races 48a, 48b of the bearing 48 are fixedly mounted to the operator seat platform 40 and the operator cab 24 respectively by a plurality of fasteners 48d, for example bolts or screws 48d. As described above, it shall be appreciated that the fastening members 48d which mount the inner race 48a to the operator seat platform 40 may be located above the floorplate 24h. However, as illustrated in Figure 8, both the inner and outer races 48a, 48b of the bearing are located below the floorplate 24h. In embodiments where the operator cab 24 is assembled to the chassis 12 prior to assembly of the operator seat 26 and operator platform 40 to the operator cab 24, the fasteners 48d may be secured once the operator platform 40 has been inserted through the opening 25f (i.e. after the operator cab 24 has been secured to the chassis 12). It shall be appreciated that the access apertures 13a may provide access to the bearing 48 during assembly and maintenance.

[0180] The bearing 48 defines an internal aperture, and the hydraulic fluid line extends through the internal aperture of the bearing 48. In particular, the hydraulic fluid line extends through the inner race 48a of the bearing 48.

[0181] The hydraulic fluid line 60 is arranged below the floor plate of the operator cab 24 and is configured to supply fluid to one or more hydraulic actuators of the dumper vehicle 10. The hydraulic fluid line 60 includes a fixed part 60b and a flexible part 60a, said flexible part 60a connected to the operator seat platform 40 and configured to permit movement of the operator seat 26 between the first and second positions. The flexible part 60a includes a flexible sleeve which surrounds the set of hydraulic hoses. As illustrated in Figure 9, the flexible part 60a of the hydraulic fluid line 60 is wound into a coil to form a flexible connection. As the operator seat 26 rotates, the coiled hoses flex and rotate with the operator seat 26. The hydraulic fluid line 60 is wound into the coil when the operator seat 26 is in the front facing position, and the flexible part 60a uncoils when the operator seat 26 rotates into the rear facing position. The hydraulic fluid line 60 is at least partially arranged between the prime mover 36 and the operator platform 40. In particular, the flexible part 60a of the hydraulic fluid line 60 is arranged between the prime mover 36 and the operator platform 40.

[0182] In the embodiment shown in Figure 9, the coil is at least partially arranged in a helical configuration. The helical configuration of the flexible part 60a of the hydraulic fluid line includes at least one revolution. The flexible part 60a is fixed at both ends. In particular, the fixed part 60b is fixedly connected to the chassis 12 at a first end, and fixedly connected to the operator seat platform 40 at a second end. The flexible part 60a is therefore configured to flex between the fixed first and second end. The fixed part 60bs extend from the first and second ends thereof.

[0183] The chassis 12 includes a fixed mounting member 62, illustrated in Figure 9, and the hydraulic hoses of the hydraulic fluid line 60 are mounted to the fixed mounting member 62. The mounting member 62 is a mounting plate 62 fixedly mounted to the chassis 12. The mounting plate 62 comprises a plurality of fixed connectors 64, and each hydraulic hose extends through a respective connector 64. The connectors 64 fixedly connect the hydraulic hoses 60 to the mounting plate 62, and therefore to the chassis 12. It shall be appreciated that the access apertures 13a may be used to access the hydraulic fluid lines 60 and / or mounting plate 62 for maintenance and assembly.

[0184] The mounting plate 62 includes a first portion 62a and a second portion 62b. In the embodiment shown in Figures 8 and 9, the first portion 62a and the second portion 62b are substantially planar. The first portion 62a is for mounting the mounting plate 62 to the chassis 12. The hydraulic hoses 60 are mounted to the second portion 62b of the mounting plate 62. The second section 62b extends at a non-zero angle relative to the first portion 62a. In particular, the second sections 62b is angled generally upwards with the respect to the first portion 62a, in use. The first section 62a extends substantially horizontally, or substantially parallel to the longitudinal axis of the dumper vehicle 10. As such, the second section 62b extends at an angle relative to horizontal or relative to the longitudinal axis of the dumper vehicle 10. It shall be appreciated that in alternative embodiments, both the first and second sections 62a, 62b may be angled relative to the longitudinal axis of the dumper vehicle 10.

[0185] An acute angle defined between the first portion 62a and the second portion 62b may be in the range 10° to 80°, optionally in the range 20° to 70°, optionally in the range 30° to

[0186] 60°, for example in the range 40° to 50°. In the embodiment shown in Figures 8 and 9, the angle defined between the first portion 62a and the second portion 62b is approximately 45°. Angles within these ranges have been found to provide a compact arrangement, whilst reducing stress on the hydraulic hoses 60. This helps to improve operator comfort as the operator seat 26 rotates between the front and rear facing positions. The first portion 62a of the mounting plate 62 is substantially level with a lowermost surface of the airflow duct 78 when the dumper vehicle 10 is viewed in side view. Put another way, the first portion 62a of the mounting plate 62 does not extend beyond the lowermost surface of the airflow duct 78 in a substantially downward direction. As such, a vertical distance between the floorplate 24h and the first portion 62a of the mounting plate 62 is less than or equal to a vertical distance between the floorplate 24h and the lowermost surface of the airflow duct 78. This is a space efficient arrangement, as the mounting plate 62 occupies a space which is already taken up by the airflow duct 78, and vice versa.

[0187] The flexible part 60a of the hydraulic fluid line 60 passes through an opening in the floorplate 24h, as illustrated in Figure 8. In particular, the hydraulic fluid line 60 passes through the inner race 48a of the bearing 48 and through the floorplate 24h. This provides a compact arrangement of the mounting arrangement 48 and the hydraulic fluid line 60. The hydraulic fluid line 60 then passes through the channel 43, for example to supply hydraulic fluid to the control console 44. As such, the channel 43 functions as a housing for housing the hydraulic fluid line 60.

[0188] The dumper vehicle 10 includes one or more electronic control modules which are located or arranged at a location outside of the operator cab 24. The one or more electronic control modules may be mounted to the chassis 12 or the operator cab 24. This moves the electronic control modules out of the line of sight of the operator, thereby improving operator visibility. It shall be appreciated that at least one, or any combination of, an electronic control unit (ECU), modular electronic control unit (MECU) and / or the immobiliser device may be arranged at a location outside of the operator cab 24. In the embodiment of the Figures, all of the ECU, MECU and the immobiliser device are arranged at a location outside of the operator cab 24.

[0189] The electronic control modules are arranged below the operator cab 24. In particular, the electronic control modules are arranged below the floorplate 25b of the operator cab 24. It shall be appreciated that in alternative embodiments, the electronic control modules may be arranged at any suitable location outside of the operator cab 24. In further alternative embodiments, the electronic control modules may be located in the operator cab 24.

[0190] The one or more embodiments are described above by way of example only and it will be appreciated that the variations are possible without departing from the scope of protection afforded by the appended claims.

Claims

Claims1. A dumper vehicle comprising: a chassis; a ground engaging propulsion structure mounted to the chassis; an open topped container for carrying a load therein supported by the chassis, wherein the container is moveable between a transport position for transporting a load and a discharge position for discharging of a load; an operator cab mounted to the chassis, an operator seat in said operator cab, said operator seat moveable between a front facing position in which the operator seat faces the container and a rear facing position, wherein the front facing position is primarily for off-highway driving and the rear facing position is primarily for on-highway driving; and a drive arrangement configured to provide, at least in part, tractive power to the ground engaging propulsion structure and operable in a first mode corresponding to the front facing position of the operator seat and a second mode corresponding to the rear facing position of the operator seat, wherein the drive arrangement comprises a prime mover defining an elongate axis that is arranged transversely with respect to the fore-aft axis of the dumper vehicle.

2. The dumper vehicle according to claim 1, wherein the prime mover is located underneath the operator cab, optionally wherein an entirety of the prime mover is located beneath the operator cab.

3. The dumper vehicle according to claim 1 or claim 2, comprising a cooling arrangement comprising a cooling pack, wherein the cooling pack is located between the prime mover and a rear wall panel of the chassis such that the operator seat faces the rear wall panel of the chassis in the rear facing position.

4. The dumper vehicle according to claim 3, wherein the rear wall panel comprises a grill arrangement comprising a plurality of apertures configured to receive a flow of air therethrough, and wherein the grill arrangement occupies at least half of the rear wall panel, optionally wherein the grill arrangement occupies at least two thirds of the rear wall panel.

5. The dumper vehicle according to claim 3 or claim 4, wherein the cooling pack is mounted to the chassis behind the rear wall panel thereof, and wherein the coolingpack comprises a cooling fan configured to draw air through the rear wall panel to cool the prime mover.

6. The dumper vehicle according to claim 5, wherein the cooling pack comprises the cooling fan mounted to a radiator panel, and wherein the cooling fan is configured to draw air through the rear wall panel towards the radiator panel.

7. The dumper vehicle according to claim 6, wherein the cooling fan is configured to draw air over the engine prior to exhausting the air via the rear wall panel.

8. The dumper vehicle according to any one of claim 5 to claim 7, wherein the rear wall panel comprises a cooling pack portion and an air intake portion, and wherein the cooling pack portion is predominantly located on a first side of the rear wall with respect to the principal axis of the dumper vehicle and the air intake portion is located predominantly on a second side of the principal axis of the dumper vehicle.

9. The dumper vehicle according to claim 8, wherein the cooling arrangement is configured to direct airflow from inside the chassis, through the cooling pack and through the cooling pack portion of the rear wall panel of the chassis.

10. The dumper vehicle according to claim 9, wherein the cooling arrangement comprises a deflector arrangement configured to direct air from the cooling pack through the cooling pack portion of the rear wall panel, optionally wherein the deflector arrangement comprises at least one baffle.

11. The dumper vehicle according to claim 9 or claim 10, where a flow path of air through the air intake portion of the rear wall panel, through the cooling pack and out the cooling pack portion of the rear wall panel is substantially U-shaped in plan view.

12. The dumper vehicle according to any one of claims 3 to 11, wherein the cooling arrangement comprises a condenser, and wherein the condenser is located in front of the prime mover and the cooling pack is located rearward of the prime mover.

13. The dumper vehicle according to claim 12, wherein the cooling arrangement comprises a condenser cooling fan located on the same side of the prime mover as the condenser.

14. The dumper vehicle according to any preceding claim, wherein the chassis comprises at least one access aperture located below the operator cab for providing access to the drive arrangement15. The dumper vehicle according to claim 14, wherein the chassis comprises an access panel connected to the chassis and arranged to at least partially cover the access aperture to form a cover for the cut-out section.

16. The dumper vehicle according to claim 14 or claim 15, wherein the at least one access aperture is arranged to provide access to the prime mover.

17. The dumper vehicle according to any one of claim 14 to claim 16, comprising a mounting arrangement configured to rotatably mount the operator seat to the operator cab, and wherein the at least one access aperture is arranged to provide access to the mounting arrangement.

18. The dumper vehicle according to any one of claim 14 to claim 17, comprising a hydraulic system comprising a hydraulic fluid line arranged below the floor plate of the operator cab and configured to supply fluid to one or more hydraulic actuators of the dumper vehicle, and wherein the access aperture is arranged to provide access to the hydraulic hoses.

19. The dumper vehicle according to any preceding claim, wherein the ground engaging structure comprises a front axle with a pair of front wheels mounted thereto and a rear axle with a pair of rear wheels mounted thereto, and wherein the undercarriage comprises at least one removable fender located above one of the wheels.

20. The dumper vehicle according to claim 19 when dependent on claim 15, wherein the access aperture is located on the chassis behind the fender, and the removable fender is the access panel for providing access to the cut-out section of the chassis.

21. The dumper vehicle according to claim 20, wherein the access panel defines a width, and wherein the width of the access panel is greater than 0.5m, optionally greater than 0.6m, optionally greater than 0.7m, for example 0.75m.

22. The dumper vehicle according to claim 20 or claim 21, wherein the access panel is an uppermost panel of the fender, optionally wherein the access panel is a central panel of the fender.

23. The dumper vehicle according to any one of claim 20 to claim 22, comprising a first removable fender located on a left side of the dumper vehicle above the rear leftside wheel and a second removable fender located on the right side of the dumper vehicle above the rear right-side wheel, and wherein the chassis comprises a cutout section located behind each of the first and second removable fenders.

24. The dumper vehicle according to any preceding claim, wherein the operator cab is resiliently mounted to the chassis via a resilient mounting arrangement.

5. The dumper vehicle according to any preceding claim, wherein the chassis comprises a main chassis and an articulated front chassis, and wherein the operator cab is mounted to the main chassis and the container is mounted to the front chassis.

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