JP2007320490A - Cargo handling vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cargo handling vehicle capable of moving a protection member for protecting a lamp provided in a rear part of a vehicle body frame between a protection position protecting the lamp and a non-protection position separated from the lamp by a simple structure. <P>SOLUTION: The rear part of the vehicle body frame 1 is provided with the lamp 4 having an indication face 4a facing rearwards and a rear bumper 5 rotatable between a rearward projection position and a storage position. The protection member 7 is fixed to the rear bumper 5, and is rotated integrally with the rear bumper 5. When the rear bumper 5 is in the storage position, the protection member 7 becomes the protection position covering the indication face 4a of the lamp 4, and when the rear bumper 5 is in the rearward projection position, the protection member 7 is separated from the indication face 4a and becomes the non-protection position enabling visual recognition of the indication face 4a from the rearward. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cargo handling vehicle capable of placing a cargo box in a dumped state.

2. Description of the Related Art There is a cargo handling vehicle that has a body frame and a cargo box mounted on the body frame, and can be in a dumping state in which the cargo box is tilted downward on the body frame. In such a cargo handling vehicle, for example, by placing a cargo box loaded with a load containing stones into a dumped state, the cargo can be discharged from the rear part of the cargo box to the ground behind the vehicle.
Further, at the rear of the vehicle body frame, a lamp having a pointing surface directed backward such as a direction indicator lamp, a brake lamp, and a stop lamp is provided. In this loading and unloading vehicle, when a load containing stones is discharged from the dumping box, the discharged stones jump on the ground, hit the indicating surface made of resin or glass, and the indicating surface is damaged. There was a point. Therefore, as shown in Patent Document 1, a cargo handling vehicle including a protection member for protecting an indication surface of a lamp has been proposed.

  The cargo handling vehicle described in Patent Document 1 is provided with an outrigger having a telescopic drive device that extends and contracts a main body portion in the vertical direction at the rear portion of a body frame. The lamp (instruction box) is attached to the main body of the outrigger. A plate-shaped protection member that opens and closes with respect to the lamp is rotatably provided, and an operation device (interlocking device) that rotates the protection member is provided on the outrigger. This operating device is structured to be interlocked with the expansion / contraction operation of the main body portion of the outrigger, and when the main body portion of the outrigger is extended, the protective member is in the protective position closed with respect to the lamp, and the outrigger is shortened ( The protection member is in an unprotected position that is open to the lamp during driving.

Japanese Patent No. 3337914

  As described above, in Patent Document 1, it is necessary to separately provide a dedicated operation device for operating the protection member in addition to the expansion / contraction drive device for operating the main body portion of the outrigger, which increases the number of components and the structure. However, the manufacturing cost is high.

  Accordingly, the present invention has been made in view of the above problems, and a protective member for protecting the lamp provided at the rear portion of the vehicle body frame is provided with a protection position that protects the lamp with a simple structure and the lamp. An object of the present invention is to provide a cargo handling vehicle that can be moved to a remote unprotected position.

  In order to achieve the above object, a cargo handling vehicle according to the present invention includes a vehicle body frame, a cargo box mounted on the vehicle body frame and capable of being dumped downward, and provided rearward of the vehicle body frame. A lamp having an indicating surface facing, a rear projecting position provided rearward of the body frame, projecting rearward from the body frame, and non-contact with a rear lower end of the dumping box stored in the body frame side A rear bumper that is driven to rotate between the storage position and the rear bumper, and the rear bumper rotates integrally with the rear bumper to be a protection position that covers the indication surface of the lamp at the storage position of the rear bumper. And a protection member that is a non-protection position that allows the indication surface to be viewed from behind at a position apart from the indication surface of the lamp.

According to this configuration, by setting the rear bumper to the rear protruding position, the rear bumper can function as a shock absorber in the rear part of the vehicle. It is possible to prevent the rear lower end of the box from coming into contact with the rear bumper. Then, when the packing box is brought into a dumping state, the rear bumper is rotated to the retracted position, so that the protective member rotates integrally with the rear bumper and becomes a protective position that covers the indicator surface of the lamp. Thereby, it is possible to prevent stones and the like discharged from the packing box from hitting the indication surface of the lamp. Further, by rotating the rear bumper to the rear projecting position, the protective member becomes an unprotected position, and the protective member does not interfere with visual recognition from the rear of the lamp when the cargo handling vehicle is traveling.
Thus, by providing the protective member integrally with the rotating rear bumper, a structure for switching the protective member between the protected position and the non-protected position can be obtained, and a separate mechanism for rotating the protective member is not required. This simplifies the structure.

  Further, in the cargo handling vehicle, a lower protruding position that is provided at a rear portion of the vehicle body frame and is suspended from the vehicle body frame to suppress the lowering of the vehicle body during loading work, and retracts upward from the lower protruding position. The jack that is rotatable between the storage position and the rotation of the jack and the rotation of the rear bumper are linked to each other so that the rear bumper is in the storage position and the jack is in the downward projecting position. It is preferable to further include an interlocking mechanism that places the jack in the protruding position.

  According to this configuration, when the loading operation is performed, the jack is set to the lower protruding position, whereby the jack can suppress the lowering of the vehicle body, and the loading operation becomes safe. And since a jack and a rear bumper can be made to interlock | cooperate by an interlocking mechanism, the rotation drive means of a jack and the rotation drive means of a rear bumper can be combined, and the structure can be simplified.

In the cargo handling vehicle, it is preferable that the protective surface of the protective member that covers the indicating surface of the lamp is in a horizontal posture at the rear protruding position of the rear bumper.
According to this, in a state where the rear bumper is in the rear protruding position, the protective surface of the protective member is in a horizontal posture, and this protective member can be used as a work table (step) for footrest.

In the cargo handling vehicle, the protection member preferably has a lattice shape.
According to this, in a state where the indicating surface of the lamp is protected by the protective member, the indicating surface can be visually recognized from the rear through the protective member, and the safety can be improved.

  According to the cargo handling vehicle of the present invention, by providing the protective member integrally with the rotating rear bumper, a structure for switching the protective member between the protected position and the non-protected position can be obtained. This mechanism can be eliminated and the structure can be simplified.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a side view showing an embodiment of a cargo handling vehicle according to the present invention. 2 and 3 are side views for explaining the function of the cargo handling vehicle. The cargo handling vehicle may be in a dumping state (FIG. 2) in which a body frame 1, a cargo box 2 mounted on the body frame 1, and the cargo box 2 are tilted backward on the body frame 1. A cargo handling device 3 is provided for loading and unloading the cargo box 2 between the body frame 1 and the ground (FIG. 3).

  The cargo handling device 3 includes a dump arm 11 having a base end portion rotatably attached to the rear portion of the vehicle body frame 1, and a cargo handling arm 12 having a base end portion rotatably attached to the tip end side of the dump arm 11. A telescopic actuator (hydraulic cylinder) 13 having one end portion rotatably attached to the middle portion of the cargo handling arm 12 and the other end portion rotatably attached to the front side portion of the vehicle body frame 1 is provided. The cargo handling arm 12 includes a hook arm 12a having a hook 14 attached to the tip thereof, and a lift arm 12b provided so that the hook arm 12a can be advanced and retracted. The engaging pin 15 provided on the front wall of the packing box 2 is engaged with the hook 14 to bring the packing box 2 into a dumped posture (FIG. 2) or to load and unload the packing box 2. (Fig. 3).

  More specifically, when the telescopic actuator 13 is extended in a state where the rotation of the arms 11 and 12 is restricted by a securing means (not shown) provided between the dump arm 11 and the cargo handling arm 12. The cargo box 2 in which the engagement pin 15 is engaged with the hook 14 of the cargo handling arm 12 is in a dumped state inclined downward (FIG. 2). Further, the hook arm 12a is moved horizontally with respect to the lift arm 12b to the rear of the vehicle, and the telescopic actuator 13 is extended in a state where the dumping arm 11 and the cargo handling arm 12 can be rotated by the lashing means. Then, the cargo box 2 having the engagement pins 15 engaged with the hooks 14 of the cargo handling arm 12 can be lowered to the ground (FIG. 3).

  4 to 8 are views showing a first embodiment of the main part of the present invention. 4 and 6 are views of the vehicle body frame 1 as viewed from the rear, and FIGS. 5 and 7 are side views of the rear portion of the vehicle body frame 1. FIG. 8 is a perspective view of the rear portion of the vehicle body frame 1. At the left and right positions of the rear part of the body frame 1, a lamp 4 having a pointing surface 4a facing rearward is provided. The lamp 4 includes a direction indicator lamp, a brake lamp, a stop lamp, and the like, and a support member 16 extending from the upper and lower members 17 at the rear of the vehicle body frame 1 to the outside in the vehicle width direction (outside in the left and right directions). It is fixed to. Thereby, the indication surface 4a of the lamp 4 can be visually recognized from the rear of the cargo handling vehicle. The indication surface 4a of the lamp 4 is formed by a cover member made of resin or glass.

  Further, a rear bumper 5 is provided at the rear portion of the vehicle body frame 1. The rear bumper 5 has a main body portion 5a made of steel or the like having a length extending over substantially the entire length in the vehicle width direction, and two left and right arm portions 5b fixed to the main body portion 5a and connected to the vehicle body frame 1. ing. The arm portion 5b is made of steel mold, the longitudinal direction is orthogonal to the main body portion 5a, one end portion of the arm portion 5b is fixed to the main body portion 5a, and the plate-like fixing member 19 is fixed to the other end portion. The rear bumper 5 is rotatably attached to a position near the lower end portion of the upper and lower members 17 of the vehicle body frame 1 by the fixing member 19.

  As a result, the rear bumper 5 has a rear protruding position protruding rearward from the rear end portion of the vehicle body frame 1 shown in FIGS. 4 and 5, and a storage position stored on the vehicle body frame 1 side shown in FIGS. 6 and 7. It becomes possible to rotate between the two. That is, the rear bumper 5 is rotated about 90 ° upward from the rear protruding position to become the storage position, and the main body portion 5a of the rear bumper 5 in the storage position is positioned in front of the vehicle rather than being in the rear protruding position. become. Further, at this retracted position, the arm portion 5 b of the rear bumper 5 is parallel to the upper and lower members 17 of the vehicle body frame 1, and the main body portion 5 a of the rear bumper 5 is brought close to the support member 16 of the vehicle body frame 1. In this retracted position, the rear bumper 5 is in a position where it does not come into contact with the lower end of the rear portion of the dump box 2.

  A mounting member 18 extends from the upper and lower members 17 toward the front of the vehicle, and a body end portion of a telescopic actuator 6 (driving means) made of a hydraulic cylinder is rotatably attached to a distal end portion of the mounting member 18. Yes. As will be described in detail later, the rear bumper 5 can be rotationally driven to the rear protruding position and the retracted position by the expansion / contraction operation of the expansion / contraction actuator 6.

  The cargo handling vehicle further includes a jack 8 at the rear portion of the vehicle body frame 1. The jack 8 has a pair of left and right arm portions 8a rotatably attached to a position near the lower end portion of the upper and lower members 17, and a roller 8b rotatably attached to the distal end portion of the arm portion 8a. is doing. The jack 8 hangs down from the vehicle body frame 1 so that the roller 8b approaches the ground (FIG. 7), and rotates about 90 ° to the front of the vehicle so that the roller 8b is retracted from the ground above the lower protruding position. It can be rotated between the storage position (FIG. 5).

  Further, an interlocking mechanism 9 that interlinks the rotation of the jack 8 and the rotation of the rear bumper 5 is interposed between the jack 8 and the rear bumper 5, and the interlocking mechanism 9 is jacked when the rear bumper 5 is in the retracted position. 8 is set to the lower protruding position (the state shown in FIGS. 6 and 7), and the rear bumper 5 is set to the retracted position at the rear protruding position (the state shown in FIGS. 4 and 5). The interlocking mechanism 9 shown in the figure has a linear arm member 9a, and one end portion of the arm member 9a is rotatably attached to a fixing member 19 fixed to the end portion of the rear bumper 5. Is attached to the arm portion 8a of the jack 8 in a freely rotatable manner.

  And the rod front-end | tip part of the said expansion-contraction actuator 6 is attached to the middle part of the arm part 8a of the jack 8 so that rotation is possible. The rear bumper 5 and the jack 8 can be rotated and driven by the expansion / contraction operation of the expansion / contraction actuator 6, and the rear bumper 5 is held in the retracted position and the jack 8 is in the downward projecting position with the expansion / contraction actuator 6 extended. In a state where the telescopic actuator 6 is held, the rear bumper 5 is held at the rear protruding position and the jack 8 is held at the storage position.

The jack 8 held in the lower protruding position can suppress the lowering of the vehicle body during the loading operation. Specifically, when loading work for loading / unloading a load onto / from the packing box 2, the jack 8 can be set to a lower protruding position so that the jack 8 can suppress the lowering of the vehicle body, and the loading of the load can be suppressed. Unloading work is safe. Alternatively, when the cargo box 2 is loaded and unloaded between the vehicle body frame 1 and the ground, the lowering of the vehicle body can be suppressed by setting the jack 8 to the lower protruding position. Loading and unloading work is safe.
The interlocking mechanism 9 may be in other forms. For example, the interlocking mechanism 9 may be configured by the fixing member 19 on the rear bumper 5 side and the arm portion 8a of the jack 8 itself. And the arm portion 8a may be integrated (not shown), and may be rotatably attached to the vehicle body frame 1 and driven by the telescopic actuator 6.

  As a modification, the body end portion of the telescopic actuator 6 as the driving means is rotatably attached to the tip end portion of the mounting member 18 on the vehicle body frame 1 side, although not shown, the rod tip portion is the rear bumper 5. It is good also as a structure attached to. In this case, the rear bumper 5 may be rotationally driven to the rear protruding position and the retracted position by the expansion / contraction operation of the expansion / contraction actuator 6, and the rotation of the jack 8 may be interlocked by the arm member 9a (interlocking mechanism 9). Note that the attachment portion between the telescopic actuator 6 and the rear bumper 5 may be the fixing member 19 fixed to the rear bumper 5.

  The cargo handling vehicle further includes a protective member 7 that can cover and protect the indication surface 4a of the lamp 4. The protective member 7 has a lattice shape composed of a rectangular frame member and a plurality of bar members, and the lattice-shaped surface serves as the protective surface 7a. The protective member 7 is fixed to the left and right rear surfaces of the main body portion 5a of the rear bumper 5, and the protective surface 7a is fixed to be a surface orthogonal to the front surface (back surface) of the main body portion of the rear bumper 5. Of the main body portion 5a of the rear bumper 5 at the rear protruding position, the surface facing the rear of the vehicle is the surface of the rear bumper 5, and the opposite surface (the surface facing the front of the vehicle) is the rear surface of the rear bumper 5.

  As a result, the protective member 7 is fixed to the rear bumper 5 so that it can rotate integrally with the rear bumper 5. Further, the protective surface 7a of the protective member 7 has the same outer peripheral contour shape as the indication surfaces 4a of the left and right lamps 4, specifically the whole indication surface 4a of the lamp body composed of a plurality of (three) lamps 4. The outer peripheral contour shape is larger than that of all the indicating surfaces 4a.

In the state where the rear bumper 5 is set to the retracted position by the extension operation of the telescopic actuator 6 (FIGS. 6 and 7), the left and right protection members 7 fixed to the rear bumper 5 are respectively indicated on the indication surfaces of the left and right lamps 4. 4a and 4b, the left and right protection members 7 are separated from the indication surfaces 4a of the left and right lamps 4 in the state where the rear bumper 5 is in the rear projecting position. It becomes a non-protection position which makes 4a visible from back.
That is, when the rear bumper 5 is in the retracted position, the main body portion 5a of the rear bumper 5 and the support member 16 of the vehicle body frame 1 are in an adjacent parallel state, and the protective member 7 fixed to the main body portion 5a of the rear bumper 5 is It is possible to cover the indicating surface 4a at a position close to the rear of the indicating surface 4a of the lamp 4 fixed to 16.
Further, the rear bumper 5 is in a rear projecting position, the main body portion 5a of the rear bumper 5 is in a lower position in the vertical direction than the support member 16, and the protective member 7 fixed to the main body portion 5a of the rear bumper 5 is attached to the indication surface of the lamp 4 The position is lower in the vertical direction than 4a and does not exist behind the indicating surface 4a, and the indicating surface 4a is opened.

As shown in FIGS. 5, 7 and 8, the protection member 7 is in the protection position, and the protection surface 7 a is in a vertical posture and covers the indication surface 4 a in the vicinity of the indication surface 4 a of the lamp 4. be able to. Further, the protection member 7 is in the non-protection position, and the protection surface 7a is in a horizontal posture. That is, the protection surface 7a of the protection member 7 is an upward horizontal surface at the non-protection position. As a result, as shown in FIG. 8, with the rear bumper 5 in the rear protruding position, the protective surface 7a of the protective member 7 is in a horizontal posture, and this protective member 7 is used as a work platform (step) for footrest. Can be used.
Therefore, in the maintenance of the cargo handling vehicle, for example, when refueling a roller portion (not shown) on the vehicle body frame 1 or the like, the operator does not prepare another work table, and the worker can Can be climbed, and the work becomes easier.

  FIG. 9 is a diagram for explaining a second embodiment of the main part of the present invention, and is a schematic view showing the rear part of the vehicle body frame 1. Similar to the above-described embodiment, this cargo handling vehicle includes a vehicle body frame 1, a cargo box (not shown) that can be in a dumped state, a lamp 4 having a pointing surface 4a facing rearward, and a rear protruding position ( 9A) and a rear bumper 5 that can rotate between the storage position (FIG. 9B), an extendable actuator 6 that rotates the rear bumper 5, and a protective member 7 fixed to the rear bumper 5. It has. The protective member 7 is rotated integrally with the rear bumper 5 so that the rear bumper 5 is in a protective position that covers the indication surface 4a of the lamp 4 in the retracted position, and the rear bumper 5 is separated from the indication surface 4a of the lamp 4 in the rearward protruding position. It becomes a non-protection position which makes the said indication surface 4a visually recognizable from back.

  In this embodiment, the telescopic actuator 6 is attached between an attachment member 18 in the vehicle body frame 1 and a fixing member 19 fixed to the rear bumper 5. That is, the telescopic actuator 6 is connected to the rear bumper 5 and directly rotates the rear bumper 5. In the embodiment described above, the telescopic actuator 6 rotates the jack 8, and the rear bumper 5 is indirectly rotated through the jack 8 and the interlocking mechanism 9. In the embodiment shown in FIG. 5 and the jack (not shown) are not interlocked, and only the rear bumper 5 is rotated alone.

FIG. 10 is a view for explaining a third embodiment of the main part of the present invention, which is a modified example of the rear bumper 5 and the protective member 7. FIG. 10A is a perspective view showing the rear bumper 5 and the protective member 7, and FIG. 10B is a diagram for explaining these operations.
In this embodiment, a part of each of the left and right sides of the rear bumper 5 is used as the protective member 7. That is, the rear bumper 5 and the protective member 7 are integrally formed. Specifically, in the state where the rear bumper 5 shown in FIG. 10A is in the rear protruding position, the upper portion of the main body portion 5a of the rear bumper 5 is used as the protective member 7, and the upper surface thereof is used as the protective surface 7a. Then, as shown in FIG. 10 (b), the protective surface 7 a is brought close to the indicating surface 4 a of the lamp 4 by rotating the rear bumper 5 upward by a telescopic actuator (not shown) similar to the above. Then, the indication surface 4a can be covered.

  In this embodiment, the dimension (vehicle front-rear direction dimension) B1 of the protective surface 7a that is the upper surface of the main body part 5a of the rear bumper 5 is made larger than the thickness dimension b1 in the front and back direction at the lower part of the main body part 5a of the rear bumper 5. (B1> b1). As a result, the protective member 7 can be widened and the lamp 4 can be covered without being affected by the front-back dimension b1 of the main body 5a of the rear bumper 5.

FIG. 11 is a view for explaining a fourth embodiment of the main part of the present invention, which is a modification of the third embodiment. FIG. 11A is a perspective view showing the rear bumper 5 and the protective member 7, and FIG. 11B is a diagram for explaining these operations.
Also in this embodiment, as in the third embodiment, the rear bumper 5 and the protective member 7 are integrally formed. Specifically, in the state where the rear bumper 5 shown in FIG. 11A is in the rear protruding position, the upper portion of the main body portion 5a of the rear bumper 5 is used as the protective member 7, and the upper surface protective surface 7a thereof. Then, as shown in FIG. 11 (b), the protective surface 7a is brought close to the indicating surface 4a of the lamp 4 by rotating the rear bumper 5 upward by a telescopic actuator (not shown) similar to the above. Then, the indication surface 4a can be covered.

  In this embodiment, the cross-sectional outline shape of the rear bumper 5 partially including the protective member 7 is rectangular, and the dimension (vehicle longitudinal dimension) B2 of the protective surface 7a, which is the upper surface of the main body 5a of the rear bumper 5, is set. The thickness dimension b2 in the front and back direction at the lower part of the main body 5a of the rear bumper 5 is the same (B2 = b2). Thereby, the shape of the rear bumper 5 with a part of the protective member 7 is simplified, and the manufacture thereof becomes easy.

FIG. 12 is a view for explaining a fifth embodiment of the main part of the present invention, which is a modification of the third embodiment (FIG. 10). FIG. 12A is a perspective view showing the rear bumper 5 and the protective member 7, and FIG. 12B is a diagram for explaining these operations.
Also in this embodiment, the rear bumper 5 and the protective member 7 are integrally formed, as in the third embodiment. Specifically, as shown in FIG. 12A, in the state where the rear bumper 5 is in the rear protruding position, the upper part of the main body part 5a of the rear bumper 5 is used as the protective member 7, and the upper surface thereof is used as the protective surface 7a. . Then, as shown in FIG. 12 (b), the protective surface 7 a is brought close to the indicating surface 4 a of the lamp 4 by rotating the rear bumper 5 upward by an expansion / contraction actuator (not shown) similar to the above. Then, the indication surface 4a can be covered.

In this embodiment, only the respective parts on both sides in the vehicle width direction (both left and right sides) of the main body portion 5a of the rear bumper 5 are set to have the dimensions B3 (the vehicle front-rear direction dimensions) B3 of the rear bumper 5 below the main body portion 5a. Is larger than the thickness dimension b3 in the front and back direction (B3> b3). Thereby, since the protection member 7 is formed only about the part corresponding to the lamp 4 in the main body 5a of the rear bumper 5, the weight of the rear bumper 5 can be reduced and the weight can be reduced.
In the embodiment shown in FIGS. 10 to 12, the jack 8 and the rear bumper 5 may be rotated in conjunction with each other as in the first embodiment (see FIG. 5), or As in the second embodiment (FIG. 9), the rear bumper 5 may be independently rotated.

FIG. 13 is a view for explaining the sixth embodiment of the main part of the present invention, and is a perspective view showing the rear part of the vehicle body frame 1. This embodiment is a modification of the first embodiment (see FIG. 8), the fixing position of the protective member 7 with respect to the rear bumper 5 is different, and the other configurations are the same as those of the first embodiment. The protective member 7 in FIG. 13 is fixed to the pair of left and right arms 5 b of the rear bumper 5. Specifically, the connecting member 20 is linearly extended from the side surface of the arm portion 5b to the outside in the vehicle width direction, and the protective member 7 is provided at the distal end portion of the connecting member 20.
Then, by the operation of the same expansion and contraction actuator (not shown) as described above, the protection member 7 is brought into a protection position that covers the indication surface 4a of the lamp 4 by setting the rear bumper 5 to the retracted position, and the rear bumper 5 protrudes backward. By setting the position, it is possible to be a non-protected position that allows the indication surface 4a to be visually recognized from the rear side away from the indication surface 4a of the lamp 4.

  According to each of the above embodiments, the rear bumper 5 can be made to function as a shock absorber in the rear portion of the vehicle by setting the rear bumper 5 to the rear protruding position. And as shown in FIG. 2, when the packing box 2 is made into a dumping state, the rear bumper 5 can be prevented from contacting the rear bumper 5 by setting the rear bumper 5 to the storage position. Further, as shown in FIG. 3, when the cargo handling device 3 loads and unloads the cargo box 2 between the body frame 1 and the ground, the rear bumper 5 is set to the retracted position, so that the cargo box 2 is moved to the rear bumper. Contact with 5 can be prevented.

  When the packing box 2 is brought into a dumped state, for example, as shown in FIG. 5, the protective bumper 5 is rotated integrally with the rear bumper 5 by rotating the rear bumper 5 to the retracted position by the telescopic actuator 6. It becomes a protection position which covers 4 indication surfaces 4a. Further, as shown in FIG. 7, by rotating the rear bumper 5 to the rearward projecting position by the telescopic actuator 6, the protective member 7 becomes an unprotected position, and when the cargo handling vehicle travels, the protective member 7 is moved from the rear of the ramp. It does not get in the way of visual recognition. Thus, by providing the protective member 7 integrally with the rotating rear bumper 5, a structure for switching the protective member 7 between the protected position and the non-protected position is obtained, and another structure for rotating the protective member 7 is obtained. A mechanism can be eliminated and the structure can be simplified.

  When the packing box 2 is put in the dumping state, the rear bumper 5 is set to the storage position and the protection member 7 is set to the protection position, so that the stone discharged from the packing box 2 jumps on the ground and flies to the lamp 4 side. The protective member 7 can prevent the stone from hitting the indication surface 4a of the lamp 4, and can prevent the indication surface 4a from being damaged.

  Further, when the protection member 7 is formed in a lattice shape, even when the indication surface 4a of the lamp 4 is covered and protected by the protection member 7, the indication surface 4a can be visually recognized through the protection member 7 from the rear side. It can be expensive. The protective member 7 has a lattice shape composed of a rectangular frame member and a plurality of bar members, and stones larger than the interval (grid width) between adjacent bar members are prevented from hitting the lamp 4 by the protective member 7. be able to. On the other hand, stones smaller than the lattice width may hit the lamp 4 from between the bar materials, but such pebbles have a small mass and the speed after rebounding to the ground is low, so even if they hit the indicating surface 4a. The indicating surface 4a is not damaged. That is, the lattice shape of the protection member 7 is set to a lattice width smaller than that of a stone having a size that may damage the indication surface 4a.

  Further, according to the embodiment in which the rotation of the jack 8 and the rotation of the rear bumper 5 are linked by the linkage mechanism 9, the single telescopic actuator 6 is used for driving the rotation of the jack 8 and the rotation of the rear bumper 5. It can be used together for driving, and the structure can be simplified.

  Further, the cargo handling vehicle of the present invention is not limited to the illustrated form, and may be of other forms within the scope of the present invention, and the function of loading and unloading the cargo box 2 between the body frame 1 and the ground. The dump truck (not shown) provided with the operation device which can make the packing box 2 into the dumping state inclined downward is provided.

It is a side view which shows one Embodiment of the cargo handling vehicle of this invention. It is a side view explaining the function of this cargo handling vehicle. It is a side view explaining the function of this cargo handling vehicle. It is the figure which shows 1st embodiment of a cargo handling vehicle, and is the figure which looked at the vehicle body frame in which a protection member exists in a non-protection position from back. FIG. 5 is a side view of the rear part of the vehicle body frame in FIG. 4. It is the figure which shows 1st embodiment of a cargo handling vehicle, and is the figure which looked at the vehicle body frame in which a protection member exists in a protection position from back. It is a side view in the rear part of the vehicle body frame of FIG. It is a perspective view of the rear part of a body frame It is a figure explaining 2nd embodiment of a cargo handling vehicle, and is the schematic which shows the rear part of a vehicle body frame. It is a figure explaining the principal part of 3rd embodiment of a cargo handling vehicle. It is a figure explaining the principal part of 4th embodiment of a cargo handling vehicle. It is a figure explaining the principal part of 5th embodiment of a cargo handling vehicle. It is a figure explaining 6th embodiment of a cargo handling vehicle, and is a perspective view which shows the rear part of a vehicle body frame.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Body frame 2 Cargo box 4 Lamp 4a Indication surface 5 Rear bumper 6 Drive means (extension actuator)
7 Protection member 7a Protection surface 8 Jack 9 Interlocking mechanism

Claims (4)

Body frame,
A cargo box that is mounted on this body frame and can be dumped downward,
A lamp provided at a rear portion of the vehicle body frame and having a pointing surface facing rearward;
It is provided at the rear part of the body frame, and rotates between a rear projecting position projecting rearward from the body frame and a retracted position stored in the body frame side so as not to contact the rear lower end of the dumping box. A rear bumper that is driven dynamically,
It rotates integrally with the rear bumper, becomes a protection position that covers the indication surface of the lamp at the retracted position of the rear bumper, and moves away from the indication surface of the lamp at the rearward protruding position of the rear bumper. A protective member that is a non-protective position that makes it visible from the rear,
A cargo handling vehicle characterized by comprising: Provided at the rear part of the vehicle body frame, between a lower protruding position suspended from the vehicle body frame to suppress the lowering of the vehicle body during loading work, and a storage position retracted upward from the lower protruding position A jack that can be rotated;
An interlocking mechanism that interlocks the rotation of the jack and the rotation of the rear bumper, the rear bumper is in the lower protruding position at the storage position, and the rear bumper is in the storage position at the rear protruding position;
The cargo handling vehicle according to claim 1, further comprising:   3. The cargo handling vehicle according to claim 1, wherein the rear surface of the protective member that covers the indication surface of the lamp is in a horizontal posture at the rear protruding position.   The cargo handling vehicle according to any one of claims 1 to 3, wherein the protection member has a lattice shape.

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