Dump truck

Abstract

To provide a dump truck that can prevent earth and sand discharged from the loading platform from coming into contact with electronic devices that emit or receive electromagnetic waves or light.SOLUTION: A dump truck 1 includes: a vehicle body; a loading platform 4 mounted on the vehicle body; a dump mechanism that rotates the loading platform 4 between a horizontal position and an inclined position; an imaging device 20 that detects objects behind the vehicle body; and a canopy 22 that protects the imaging device 20. The canopy 22 is provided so as to extend longitudinally and laterally above the imaging device 20 when the loading platform 4 is in the horizontal position. Meanwhile, the canopy 22 is provided so as to extend longitudinally and laterally behind the imaging device 20 when the loading platform 4 is in the inclined position.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a dump truck. [Background technology]

[0002] Dump trucks have been known in the past that have a bed mounted on a chassis and a dump mechanism that tilts the bed downward toward the rear. Such dump trucks can load earth and sand onto the bed. When discharging the earth and sand loaded on the bed, the bed is tilted downward toward the rear. As a result, the earth and sand slides off the bed and is discharged from the bed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2023-096925 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, the dump truck described above may be provided with an electronic device (e.g., an imaging device) that faces rearward and emits or receives electromagnetic waves or light. Such an electronic device is attached, for example, to the rear lower part of the loading platform.

[0005] When the soil loaded in the loading compartment is discharged, the discharged soil piles up behind the vehicle. If the piled soil collapses toward the front, the soil may come into contact with the electronic devices. Furthermore, if the vehicle moves backward after discharging the soil, the soil piled up behind the vehicle may come into contact with the electronic devices. Such contact between the soil and the electronic devices may cause the electronic devices to malfunction.

[0006] The present invention has been made in consideration of the above points, and its purpose is to provide a dump truck that can prevent contact between soil and sand discharged from the loading platform and electronic devices that emit or receive electromagnetic waves or light. [Means for solving the problem]

[0007] The dump truck according to the present invention includes a vehicle body, a bed mounted on the vehicle body, a dump mechanism that rotates the bed between a horizontal position and an inclined position that inclines rearward, electronic devices that face rearward and emit or receive electromagnetic waves or light, and a protective member that protects the electronic devices. The protective member is provided so as to extend in the front-to-rear and left-to-right directions above the electronic devices when the bed is in the horizontal position. The protective member is provided so as to extend in the up-down and left-to-right directions behind the electronic devices when the bed is in the inclined position.

[0008] According to the above configuration, when the loading platform is in an inclined position, the protective member extends in the vertical and horizontal directions behind the electronic device. As a result, when the loading platform is in an inclined position, the protective member is located behind the electronic device, making it difficult for soil and sand to come into contact with the electronic device. Note that the vertical direction here includes not only extending vertically but also extending at an angle from the vertical. Furthermore, when the loading platform is in a horizontal position, the protective member is located above the electronic device. As a result, when the loading platform is in a horizontal position, the protective member does not interfere with the propagation of electromagnetic waves or light emitted from the electronic device or the propagation of electromagnetic waves or light relative to the electronic device.

[0009] According to a preferred embodiment, at least a portion of the protection member is provided so as to overlap at least a portion of the electronic device when viewed from the rear of the vehicle when the loading platform is in the inclined position.

[0010] As a result, when the loading platform is in an inclined position, at least a portion of the protection member is positioned between the electronic device and earth and sand piled up behind the vehicle, making it difficult for earth and sand to come into contact with the electronic device.

[0011] According to a preferred embodiment, the electronic device is an imaging device that captures an image of the area behind the vehicle body.

[0012] This configuration allows the driver to easily check the area behind the vehicle, for example.

[0013] According to a preferred embodiment, the protection member is attached to the loading platform and rotates together with the loading platform.

[0014] According to this configuration, the protection member moves in accordance with the rotation of the loading platform, so there is no need to provide a separate drive device for moving the protection member.

[0015] According to a preferred embodiment, at least a portion of the protection member is provided so as to overlap the entire electronic device when viewed from the rear of the vehicle when the loading platform is in the inclined position.

[0016] According to this configuration, when the loading platform is in an inclined position, the entire electronic device overlaps the protective member when viewed from behind, so the protective member can protect the entire electronic device.

[0017] According to a preferred embodiment, the cargo bed has a bottom plate and a tail panel extending downward from a rear end of the bottom plate. The electronic device is disposed below the tail panel when the cargo bed is in the horizontal position. The protective member is disposed below the tail panel when the cargo bed is in the horizontal position.

[0018] With this configuration, since the electronic device is placed at a relatively low position, electromagnetic waves or light can be incident from an area close to the ground, or electromagnetic waves or light can be emitted to an area close to the ground. Since the protective member is also placed at a relatively low position, the electronic device can be suitably protected.

[0019] According to a preferred embodiment, when the platform is in the horizontal position, the minimum vertical distance between the protection member and the electronic device is shorter than the vertical length of the electronic device.

[0020] According to this configuration, the distance between the electronic device and the protective member is relatively short, so that soil and sand are less likely to get in between the electronic device and the protective member. [Effects of the Invention]

[0021] According to the present invention, it is possible to provide a dump truck that can prevent contact between earth and sand discharged from the loading platform and electronic equipment that emits or receives electromagnetic waves or light. [Brief explanation of the drawings]

[0022] [Figure 1] FIG. 1 is a side view of a dump truck according to an embodiment. [Figure 2] FIG. 2 is a rear view of the dump truck according to the embodiment. [Figure 3] FIG. 2 is a side view of the dump truck when the loading platform is in an inclined position. [Figure 4] FIG. [Figure 5] FIG. 3 is an enlarged view of the vicinity of the tail panel in FIG. 2. [Figure 6] FIG. 6 is an enlarged view of the vicinity of the imaging device in FIG. 5. [Figure 7] FIG. 2 is an enlarged side view of the vicinity of the imaging device when the loading platform is in a horizontal position. [Figure 8] FIG. 10 is an enlarged side view of the vicinity of the imaging device when the loading platform is in an inclined position. [Figure 9] FIG. 10 is an enlarged side view of the vicinity of the imaging device when the dump truck is backing up toward the piled up earth and sand behind the vehicle body. [Figure 10] 10 is a side view illustrating the vertical distance between the canopy and the imaging device. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0023] An embodiment of the present invention will be described below with reference to the drawings. Fig. 1 is a side view of a dump truck 1 according to this embodiment. Fig. 2 is a rear view of the dump truck 1.

[0024] As shown in FIG. 1, the dump truck 1 includes a chassis 2, a cab 3, and a loading platform 4. The cab 3 and the loading platform 4 are supported by the chassis 2. The loading platform 4 is disposed behind the cab 3. A driver's seat (not shown) is provided inside the cab 3. The chassis 2 and the cab 3 form a vehicle body 1A. In the following description, unless otherwise specified, the terms front, rear, left, right, up, and down refer to the front, rear, left, right, up, and down as seen from the driver sitting in the driver's seat.

[0025] The dump truck 1 is equipped with a dump mechanism 10 (see FIG. 3) that rotates the bed 4 between a horizontal position and an inclined position. Here, the horizontal position refers to the position of the bed 4 when it is parallel to a horizontal plane, as shown in FIG. 1. The inclined position refers to the position of the bed 4 when it is inclined rearward and downward, as shown in FIG. 3. If the dump truck 1 can assume multiple inclined positions, the inclined position referred to here refers to the position of the bed 4 when it is inclined most rearward and downward. The configuration of the dump mechanism 10 is not particularly limited, and various conventionally well-known dump mechanisms can be used. The dump mechanism 10 may be one that tilts the bed 4 using a hydraulic cylinder, for example. The inclined position may be the position of the bed when the hydraulic cylinder is fully extended or retracted.

[0026] As shown in FIG. 1 , the cargo bed 4 includes a bottom plate 5, a front plate 6, side plates 7, a tail panel 8, and a tailgate 9. The bottom plate 5 is a plate-like member extending in the front-rear and left-right directions. The bottom plate 5 forms the floor surface of the cargo bed 4. The front plate 6 is a plate-like member extending upward from the front end of the bottom plate 5. The side plates 7 are plate-like members extending upward from the left and right ends of the bottom plate 5. The tail panel 8 extends downward from the rear end of the bottom plate 5.

[0027] The tailgate 9 is configured to be rotatable about a hinge shaft 11 extending in the left-right direction. The tailgate 9 is rotatable between a closed position and an open position. When the tailgate 9 is in the closed position, the tailgate 9 stands upright from the rear end of the bottom plate 5. In FIG. 3 , the state when the tailgate 9 is in the open position is represented by a solid line, and the state when the tailgate 9 is in the closed position is represented by a two-dot chain line. When the tailgate 9 is in the closed position, the rear of the cargo bed 4 is closed. When the tailgate 9 is in the open position, the rear of the cargo bed 4 is open. When earth and sand 90 is to be discharged from the cargo bed 4, the cargo bed 4 is rotated to an inclined position, and the tailgate 9 is rotated to the open position. This opens the rear of the cargo bed 4, allowing the earth and sand 90 to be discharged from the cargo bed 4.

[0028] FIG. 4 is a rear view of the loading platform 4. However, the front panel 6 is not shown in FIG. 4. As shown in FIG. 4, the dump truck 1 is provided with a locking mechanism 13 that locks the opening and closing operation of the tailgate 9. The locking mechanism 13 includes a hook 14 and a locking bar 15. The hook 14 is provided on the tail panel 8. The locking bar 15 is provided on the tailgate 9. The locking bar 15 extends in the left-right direction. The hook 14 is connected to a lever (not shown). An operator can manually operate the lever to lock the hook 14 to the locking bar 15 and release the lock. When the hook 14 is locked to the locking bar 15, the tailgate 9 cannot rotate around the hinge shaft 11, and the tailgate 9 is held in a closed position. When the hook 14 is released from the locking of the locking bar 15, the tailgate 9 can be rotated from the closed position to the open position.

[0029] As shown in FIG. 5, the dump truck 1 is equipped with an imaging device 20. The imaging device 20 faces rearward and captures an image of the area behind the vehicle body 1A. The imaging device 20 is an example of an electronic device that faces rearward and emits and receives electromagnetic waves or light. The imaging device 20 is an example of a detection device that captures an image of the area behind the vehicle body 1A to detect people, obstacles, etc., present behind the vehicle body 1A. Note that the imaging device 20 is not shown in FIGS. 1 and 3. As shown in FIGS. 5 and 6, in this embodiment, the imaging device 20 is attached to and supported on the lower rear end of the bed 4 by a bracket 26 and a support member 24. Note that the shapes of the bracket 26 and the support member 24 are not particularly limited. The imaging device 20 may also be attached directly to the bed 4 without using the bracket 26 and the support member 24. When the bed 4 is in a horizontal position, the imaging device 20 is disposed below the tail panel 8. When the bed 4 is in a horizontal position, the imaging device 20 is disposed so as to be tilted downward by approximately 20° relative to the horizontal plane. This allows the area behind the vehicle body 1A and close to the ground to be captured appropriately. A monitor (not shown) that displays images captured by the imaging device 20 is provided inside the cab 3. This allows the driver to check the situation behind the vehicle in real time while inside the cab 3.

[0030] As shown in FIGS. 6 and 7 , the imaging device 20 includes a case 31 and a lens 33. In this embodiment, the case 31 is formed in a cubic shape with sides of approximately 30 mm. The dimensions and shape of the case 31 are not limited to these. For example, the case 31 may be a rectangular parallelepiped with sides of 20 mm to 40 mm, 15 mm to 35 mm, or 30 mm to 50 mm. The case 31 may also be a cylindrical shape with an outer diameter of 20 mm to 40 mm and a length of 20 mm to 40 mm. Although not shown, an imaging element, a substrate, and the like are provided inside the case 31. The lens 33 is provided on the surface of the case 31 facing rearward. The center of the lens 33 is positioned so as to approximately coincide with the center of the surface of the case 31 facing rearward. The lens 33 is positioned so as to allow light from outside the case 31 to enter the inside of the case 31.

[0031] As shown in FIGS. 6 and 7 , the dump truck 1 is equipped with a awning 22. The awning 22 is an example of a "protective member" that protects the imaging device 20 from soil and sand 90 discharged from the loading platform 4 and piled up behind the vehicle body 1A. In this embodiment, the awning 22 is formed of a flat plate-shaped member. In this embodiment, the awning 22 and the support member 24 are formed as a single member. When the loading platform 4 is in a horizontal position, the awning 22 is disposed below the tail panel 8. When the loading platform 4 is in a horizontal position, the awning 22 is located above the imaging device 20 and extends in the front-rear and left-right directions. This prevents the awning 22 from interfering with the imaging device 20 capturing images of the rear of the vehicle body 1A. In this embodiment, as shown in FIG. 7 , when the loading platform 4 is in a horizontal position, the awning 22 is tilted downward by approximately 15° with respect to the horizontal plane. As shown in FIG. 7 , when the loading platform 4 is in a horizontal position, the awning 22 protrudes rearward beyond the imaging device 20. When the loading platform 4 is in a horizontal position, the rear end of the eaves 22 is located rearward of the rear end of the imaging device 20. Here, when the loading platform 4 is in a horizontal position, the rear end of the eaves 22 is located rearward of the rear end of the lens 33 of the imaging device 20. As shown in FIG. 6, the length of the eaves 22 in the left-right direction is longer than the length of the imaging device 20 in the left-right direction. When the loading platform 4 is in a horizontal position, the left end of the eaves 22 is located leftward of the left end of the imaging device 20, and the right end of the eaves 22 is located rightward of the right end of the imaging device 20.

[0032] When unloading the soil 90 loaded on the loading platform 4, the dump mechanism 10 rotates the loading platform 4 from a horizontal position to an inclined position, as shown in FIG. 3 . As shown in FIG. 7 , the imaging device 20 and the eaves 22 are attached to the lower rear end of the loading platform 4, and therefore move together with the rotation of the loading platform 4. As shown in FIG. 8 , when the loading platform 4 is in an inclined position, the imaging device 20 and the eaves 22 are positioned in front of the tail panel 8. This makes it less likely that the imaging device 20 and the eaves 22 will come into contact with the soil 90 sliding down from the loading platform 4 when unloading the soil 90 from the loading platform 4. Furthermore, when the loading platform 4 is in an inclined position, the eaves 22 is positioned behind the imaging device 20 and extends in the left-right and up-down directions. When the loading platform 4 is in an inclined position, the lower end of the eaves 22 is positioned lower than the lower end of the imaging device 20. When the loading platform 4 is in an inclined position, the eaves 22 overlaps the entire imaging device 20 when viewed from behind. The eaves 22 are located between the earth and sand 90 that has been discharged from the loading platform 4 and piled up behind the vehicle body 1A and the imaging device 20. As a result, even if the discharged earth and sand 90 collapses forward when the loading platform 4 is in an inclined position or the dump truck 1 moves backward as shown in FIG. 9, the earth and sand 90 discharged behind the vehicle body 1A is likely to come into contact with the eaves 22 and is unlikely to come into contact with the imaging device 20.

[0033] The vertical distance L1 between the imaging device 20 and the eaves 22 (the vertical distance when the loading platform 4 is in a horizontal position; see FIG. 10 ) is not particularly limited, but it is preferable that the distance L1 be small so that soil and sand are less likely to get in between the eaves 22 and the imaging device 20. For example, it is preferable that the minimum vertical distance L1min (see FIG. 10 ) between the imaging device 20 and the eaves 22 is shorter than the vertical length L2 (see FIG. 10 ) of the imaging device 20. Here, the minimum vertical distance L1min between the imaging device 20 and the eaves 22 refers to the point where the vertical distance L1 between the imaging device 20 and the eaves 22 is shortest. In this embodiment, the vertical distance L1 between the imaging device 20 and the eaves 22 varies depending on the position in the front-rear direction, and the distance L1 is shortest near the connection portion 22a between the eaves 22 and the support member 24. In this embodiment, the eaves 22 are arranged so that the minimum vertical distance L1min between the imaging device 20 and the eaves 22 is approximately 10 mm. In this embodiment, since the length of one side of the case 31 is approximately 30 mm, the vertical length L2 of the imaging device 20 is 30 mm or more. Therefore, L2 > L1 min. Note that the minimum vertical distance L1 min between the imaging device 20 and the eaves 22 may be 5 mm to 15 mm, or may be 15 mm to 25 mm. Furthermore, in this embodiment, since the imaging device 20 is fixed to the loading platform 4 by the support member 24, the vertical distance L1 between the imaging device 20 and the eaves 22 does not change whether the loading platform 4 is in a horizontal position or an inclined position.

[0034] According to this embodiment, the dump truck 1 includes a vehicle body 1A, a loading platform 4 mounted on the vehicle body 1A, a dump mechanism 10 that rotates the loading platform 4, an imaging device 20 that captures images of the area behind the vehicle body 1A, and a canopy 22 that protects the imaging device 20. The canopy 22 is provided above the imaging device 20 and extends in the front-to-rear and left-to-right directions when the loading platform 4 is in a horizontal position. The canopy 22 is provided behind the imaging device 20 and extends in the up-to-down and left-to-right directions when the loading platform 4 is in an inclined position. This positions the canopy 22 behind the imaging device 20 when the loading platform 4 is in an inclined position. Even if the discharged soil 90 collapses forward or the dump truck 1 backs up when the loading platform 4 is in an inclined position, the soil 90 discharged behind the vehicle body 1A is unlikely to come into contact with the imaging device 20. Furthermore, when the loading platform 4 is in a horizontal position, the canopy 22 is located above the imaging device 20. As a result, when the loading platform 4 is in a horizontal position, the eaves 22 do not interfere with imaging by the imaging device 20. Furthermore, when the loading platform 4 is in a horizontal position, the eaves 22 are located above the imaging device 20, so the imaging device 20 is less likely to come into contact with soil spilled during loading work, etc.

[0035] According to this embodiment, at least a portion of the eaves 22 is provided so as to overlap at least a portion of the imaging device 20 when viewed from behind when the loading platform 4 is in an inclined position. As a result, when the loading platform 4 is in an inclined position, at least a portion of the eaves 22 is positioned between the imaging device 20 and the soil 90 discharged behind the vehicle body 1A, making it difficult for the soil 90 to come into contact with the imaging device 20.

[0036] According to this embodiment, the dump truck 1 is provided with the imaging device 20 that captures an image of the area behind the vehicle body 1A, so the driver of the dump truck 1 can check the situation behind the vehicle body 1A.

[0037] According to this embodiment, the canopy 22 is attached to the loading platform 4, and when the loading platform 4 tilts, the canopy 22 also moves rearward from above the imaging device 20. Therefore, there is no need to provide a separate drive device for moving the canopy 22.

[0038] According to this embodiment, when the loading platform 4 is in an inclined position, the canopy 22 protrudes downward from the lower end of the imaging device 20. This allows the canopy 22 to protect the entire imaging device 20 in the vertical direction.

[0039] According to this embodiment, the left-right length of the eaves 22 is longer than the left-right length of the imaging device 20. When the loading platform 4 is in a horizontal position, the left end of the eaves 22 is located to the left of the left end of the imaging device 20, and the right end of the eaves 22 is located to the right of the right end of the imaging device 20. This allows the eaves 22 to protect the entire imaging device 20 in the left-right direction.

[0040] According to this embodiment, at least a portion of the canopy 22 is provided so as to overlap the entire imaging device 20 when viewed from behind when the loading platform 4 is in the inclined position. As a result, when the loading platform is in the inclined position, the entire imaging device 20 overlaps with the canopy 22 when viewed from behind, so the canopy 22 can protect the entire imaging device 20.

[0041] According to this embodiment, the dump truck 1 is provided with a support member 24 to which the imaging device 20 is attached. The eaves 22 is provided integrally with the support member 24. This makes it possible to reduce the number of parts.

[0042] According to this embodiment, the loading platform 4 has a bottom plate 5 and a tail panel 8 extending downward from the rear end of the bottom plate 5. When the loading platform 4 is in a horizontal position, the imaging device 20 and the eaves 22 are disposed below the tail panel 8. Since the imaging device 20 is disposed at a relatively low position, it can suitably detect areas close to the ground. Since the eaves 22 is also disposed at a relatively low position, it can suitably protect the imaging device 20.

[0043] According to this embodiment, the minimum vertical distance L1min between the imaging device 20 and the eaves 22 when the loading platform 4 is in a horizontal position is approximately 10 mm. On the other hand, the vertical length L2 of the imaging device 20 is 30 mm or more. The minimum vertical distance L1min between the imaging device 20 and the eaves 22 is shorter than the vertical length L2 of the imaging device 20. Because the distance between the imaging device 20 and the eaves 22 is small, soil and sand are less likely to get in between the imaging device 20 and the eaves 22.

[0044] Although one embodiment of the present invention has been described above, the embodiment is merely an example, and various other embodiments are possible for the present invention.

[0045] In the above embodiment, the imaging device 20 is attached to the loading platform 4, but the attachment position of the imaging device 20 is not limited to this. For example, the imaging device 20 may be attached to the chassis 2. In this case, when the loading platform 4 rotates from a horizontal position to an inclined position, the imaging device 20 does not move, and only the eaves 22 moves. In this case, the eaves 22 may be provided so that the vertical distance L1 between the imaging device 20 and the eaves 22 changes when the loading platform 4 is in a horizontal position and an inclined position.

[0046] In the above embodiment, the eaves 22 are attached to the loading platform 4, but the attachment position of the eaves 22 is not limited to this. For example, the eaves 22 may be attached to the chassis 2. In this case, the dump truck 1 may be provided with a drive device that moves the eaves 22 in accordance with the rotation of the loading platform 4. In this case, the eaves 22 may be provided so that the vertical distance L1 between the imaging device 20 and the eaves 22 changes when the loading platform 4 is in a horizontal position and when it is in an inclined position.

[0047] In the above embodiment, the imaging device 20 is provided so as to be tilted downward by approximately 20° relative to the horizontal plane when the loading platform 4 is in a horizontal position. However, the imaging device 20 may be provided so as to be tilted downward by 10° relative to the horizontal plane when the loading platform 4 is in a horizontal position, or may be provided parallel to the horizontal plane. Similarly, the eaves 22 may be provided so as to be tilted downward by 10° relative to the horizontal plane when the loading platform 4 is in a horizontal position, or may be provided parallel to the horizontal plane.

[0048] In the above embodiment, the vertical distance L1 between the imaging device 20 and the eaves 22 varies depending on the position in the front-to-rear direction. However, the imaging device 20 and the eaves 22 may be provided so that the vertical distance L1 between the imaging device 20 and the eaves 22 is equal regardless of the position in the front-to-rear direction. The imaging device 20 and the eaves 22 may be provided so that they are inclined at the same angle relative to the horizontal plane.

[0049] In the above embodiment, the eaves 22 and the support member 24 are formed as a single member, but the eaves 22 and the support member 24 may also be separate members. The eaves 22 may be configured to be detachable from the support member 24. For example, the eaves 22 may be configured to be detachable from the support member 24 with bolts. This makes it easy to replace the eaves 22 when it is damaged, as the eaves 22 is a member that is relatively susceptible to contact with soil and sand 90 and is easily damaged.

[0050] In the above embodiment, the imaging device 20 has been described as an example of an electronic device provided in the dump truck 1, but the type of electronic device is not limited to the imaging device 20. The electronic device may also be a detection device that detects an object behind the vehicle body 1A by a method other than imaging. For example, the electronic device may be a radar that detects an object by irradiating an object with radio waves, or an infrared sensor that detects an object by irradiating an object with infrared rays. Furthermore, the electronic device does not have to be a detection device that detects an object behind the vehicle body 1A. For example, the electronic device may be a laser rangefinder that measures the distance to an object behind the vehicle body 1A, or a light irradiation device that irradiates light behind the vehicle body 1A.

[0051] There are no particular limitations on the vehicle specifications and maximum load weight of the dump truck 1. The dump truck 1 may also be a loader dump truck that is capable of tilting the loading platform 4 and also of sliding the loading platform 4 backward. In this case, the eaves may be attached to the loading platform 4, and the imaging device 20 may be attached to the chassis 2. The dump truck 1 may also be a three-way dump truck that is capable of tilting the loading platform 4 not only backward but also sideways. [Explanation of symbols]

[0052] 1 dump truck 1A Vehicle body 4 Cargo bed 8 Tail Panel 10 Dump mechanism 20 Imaging devices (electronic devices) 22 Eaves (protective member) 24 Support member

Claims

1. The vehicle body, a loading platform mounted on the vehicle body; a dump mechanism that rotates the loading platform between a horizontal position and an inclined position inclined rearward; an electronic device provided on the vehicle body or the loading platform, facing rearward, and emitting or receiving electromagnetic waves or light; a protective member for protecting the electronic device, The protective member is the platform is provided above the electronic device so as to extend in the front-rear and left-right directions when the platform is in the horizontal position, The dump truck is provided so that the loading platform extends in the vertical and horizontal directions behind the electronic device when the loading platform is in the inclined position.

2. The dump truck according to claim 1 , wherein at least a portion of the protection member is provided so as to overlap at least a portion of the electronic device when viewed from the rear of the vehicle when the loading platform is in the inclined posture.

3. The dump truck according to claim 1 , wherein the electronic device is an imaging device that captures an image of a rear area of ​​the vehicle body.

4. The dump truck according to claim 1 , wherein the protection member is attached to the bed and rotates together with the bed.

5. The dump truck according to claim 1 , wherein at least a portion of the protection member is provided so as to overlap the entire electronic device when viewed from the rear of the vehicle when the loading platform is in the inclined posture.

6. The loading platform is The bottom plate and a tail panel extending downward from the rear end of the bottom plate, the electronic device is disposed below the tail panel when the cargo bed is in the horizontal position, The dump truck according to claim 1 , wherein the protection member is disposed below the tail panel when the bed is in the horizontal position.

7. The dump truck according to claim 1 , wherein a minimum distance in the up-down direction between the protection member and the electronic device when the loading platform is in the horizontal position is shorter than a length of the electronic device in the up-down direction.

Images