Cargo handling vehicle

Abstract

To provide a cargo handling vehicle superior in workability when installing a seat base.SOLUTION: A cargo handling vehicle of the present invention includes a vehicle body having a pair of vehicle body frames each extending in a vehicle length direction and disposed at an interval in a vehicle width direction, and a seat base which is disposed on the pair of vehicle body frames and on which a seat covering an upper portion of a cargo box mounted or mountable on the pair of vehicle body frames can be placed. The seat base includes a plurality of portions including a portion welded to one vehicle body frame of the pair of vehicle body frames and a portion welded to the other vehicle body frame of the pair of vehicle body frames, and adjacent portions of the plurality of portions are connected to each other by a fastening member.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a cargo handling vehicle that is equipped with or can be equipped with a cargo box. [Background technology]

[0002] BACKGROUND ART A cargo handling vehicle equipped with a seat base on which a sheet for covering the top of a cargo box can be placed has been known (see Patent Document 1).

[0003] As shown in Figure 10, this cargo handling vehicle 100 comprises a body (chassis) 102 having a pair of subframes 101, a seat base 110 placed on the subframes 101, and a cargo handling device 103 for loading and unloading containers Ct onto and from the body 102.

[0004] The pair of sub-frames 101 extend in the vehicle length direction and are arranged at an interval in the vehicle width direction.

[0005] The seat base 110 is a base on which a seat is placed to cover the upper opening of the container Ct loaded onto the vehicle body 102 by the cargo handling device 103. Specifically, the seat base 110 has a base portion 111 that extends in the vehicle width direction and on which the seat is placed, and a pair of feet 112 that support the base portion 111. Each foot portion 112 extends in the vertical direction, and has its lower end welded to the subframe 101. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 5266008 Summary of the Invention [Problem to be solved by the invention]

[0007] In the cargo handling vehicle, the seat base 110 is attached to the vehicle body 102 by welding each of the foot portions 112 to the subframe 101 with the base portion 111 and the foot portions 112 integrated together. Specifically, one foot portion 112 and the other foot portion 112 of the seat base 110 are temporarily placed on the subframe 101, and the lower ends of the foot portions 112 are welded to the subframe 101.

[0008] This welding work (installation work) was difficult to perform because the base portion 111 of the seat base 110 and the pair of feet 112 were integrated, making it heavy and taking up a large amount of space across the entire width of the vehicle.

[0009] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a cargo handling vehicle that allows for easy installation of a seat base. [Means for solving the problem]

[0010] The cargo handling vehicle of the present invention comprises: a vehicle body having a pair of body frames each extending in a vehicle length direction and spaced apart in a vehicle width direction; a seat base that is disposed on the pair of body frames and on which a seat that covers an upper portion of a cargo box that is mounted or can be mounted on the pair of body frames can be placed, the seat base is configured by a plurality of portions including a portion welded to one of the pair of body frames and a portion welded to the other of the pair of body frames, Adjacent portions of the plurality of portions are connected to each other by fastening members.

[0011] According to this configuration, when attaching the seat base to the body frame, the portion to be welded to one body frame and the portion to be welded to the other body frame are each welded to the body frame, and then the remaining portions are connected with fastening members, thereby reducing the space and weight required during the work, thereby improving workability.

[0012] In addition, in the cargo handling vehicle, the plurality of portions include a base portion on which the seat can be placed and a pair of feet supporting the base portion, one of the pair of foot portions extends in the vertical direction and is welded to one of the vehicle body frames; the other of the pair of foot portions extends in the vertical direction and is welded to the other vehicle body frame, The base and one of the legs may be connected by the fastening member, and the base and the other leg may be connected by the fastening member.

[0013] According to this configuration, it is only necessary to weld the foot portion, excluding the heavy base portion, during the welding work, thereby improving the workability of the welding work.

[0014] In addition, in the cargo handling vehicle, The fastening member includes a bolt, The connecting portions between the adjacent portions have bolt holes for the connection, The bolt hole may be larger than the shank of the bolt.

[0015] With this configuration, when bolting adjacent parts together, the bolt hole is larger than the bolt shaft, so manufacturing errors in each part being connected can be absorbed, thereby improving the workability of connecting parts together. [Effects of the Invention]

[0016] As described above, according to the present invention, a cargo handling vehicle can be provided that allows for easy installation of the seat base. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a side view of a container transport vehicle according to this embodiment, and is a side view of the container transport vehicle in a traveling posture. [Figure 2] FIG. 2 is a side view of the container transport vehicle, showing the container loading / unloading posture. [Figure 3]FIG. 3 is a side view of the mounting portion and the seat base provided on the container transport vehicle. [Figure 4] FIG. 4 is a plan view of the mounting portion and the seat base. [Figure 5] FIG. 5 is a perspective view of the seat base. [Figure 6] FIG. 6 is an exploded perspective view of the seat base. [Figure 7] FIG. 7 is a schematic diagram for explaining a seat base that can be separated into a plurality of sections in the vertical direction. [Figure 8] FIG. 8 is a schematic diagram for explaining a seat base that can be separated into a plurality of portions in the vehicle width direction. [Figure 9] FIG. 9 is a schematic diagram for explaining a seat base that can be separated into a plurality of portions in both the longitudinal direction and the vehicle width direction. [Figure 10] FIG. 10 is a side view of a conventional container carrier. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, one embodiment of the present invention will be described with reference to FIGS.

[0019] As shown in FIGS. 1 and 2, the cargo handling vehicle according to this embodiment is a container transport vehicle 1 capable of loading and unloading containers (packing boxes) Ct.

[0020] The container Ct transported by this container transport vehicle 1 has a box shape with an open top end, and has multiple support legs A arranged on the underside of the front end and multiple traveling wheels W arranged on the underside of the rear end. This container Ct has an engaging part E arranged on the upper part of the front end and engageable with the hook 482 at the tip of the hook arm 481, and an openable rear gate G arranged on the rear end.

[0021] The container transport vehicle 1 comprises a cab 2 which is the driver's compartment, a vehicle body (chassis) 3 having a pair of chassis frames 31, a mounting section 4 arranged on the chassis frames 31, and a seat base 5 arranged behind the cab 2.

[0022] The pair of chassis frames 31 extend in the vehicle length direction and are arranged at an interval in the vehicle width direction.

[0023] 3 and 4, the mounting unit 4 has a pair of sub-frames 41 that extend in the vehicle length direction and are spaced apart in the vehicle width direction, and a cargo handling device 45 that is disposed on the sub-frames 41. The mounting unit 4 also has a lateral frame 42 that extends in the vehicle width direction and connects the pair of sub-frames 41. In the container transport vehicle 1 of this embodiment, a container Ct is mounted on the sub-frame 41.

[0024] The pair of sub-frames 41 are each disposed on the chassis frame 31. In the container transport vehicle 1 of this embodiment, the chassis frame 31 and the sub-frames 41 disposed on the chassis frame 31 constitute a vehicle body frame F.

[0025] The loading and unloading device 45 has a dump arm section 46 that dumps the container Ct loaded on the subframe 41, and a lift arm section 47 and a hook arm section 48 that load and unload the container Ct onto and from the subframe 41.

[0026] The dump arm portion 46 is pivotally supported at its rear end portion between a pair of body frames F by the body frames F. The dump arm portion 46 in this embodiment has its rear end portion pivotally supported by a horizontal shaft 43 extending between the sub-frames 41 in the vehicle width direction so as to be pivotable about the horizontal shaft 43.

[0027] Specifically, the dump arm section 46 has a pair of dump arms 461 that each extend in the vehicle length direction and are spaced apart in the vehicle width direction, an intermediate horizontal frame 462 that extends in the vehicle width direction and connects intermediate portions of the dump arms 461, and a front end horizontal frame 463 that extends in the vehicle width direction and connects all ends of the dump arms 461. The dump arm section 46 also has a support shaft 464 that extends in the vehicle width direction at a position closer to the front of the intermediate portion of the dump arm 461.

[0028] The lift arm section 47 is disposed between the pair of dump arms 461 and has a pair of lift arms 471 whose rear ends are supported by support shafts 464 so as to be rotatable about the support shafts 464, and a pair of hydraulic lift cylinders 472 which connect the middle parts of the lift arms 471 to the front end of the subframe 41. The pair of lift cylinders 472 extend and retract, respectively, causing the pair of lift arms 471 to rotate about the support shafts 464.

[0029] The hook arm portion 48 has a hook arm 481 that is approximately L-shaped when viewed from the vehicle width direction, a hook 482 attached to the tip of the hook arm 481, and a hydraulic hook cylinder 483 that connects the middle part of the hook arm 481 and the front end of the lift arm 471.

[0030] The hook arm 481 has a base end rotatably attached to the front end of the lift arm 471, and is tiltable in a direction (rearward) in which the hook 482 approaches the support shaft 464 (see arrow α in FIG. 3).

[0031] The hook 482 is attached to the upper end (tip) of the hook arm 481 and has a substantially C-shape that can be engaged with the container Ct.

[0032] The hook cylinder 483 extends and retracts to tilt (rotate) the hook arm 481 around the connection position between the hook arm 481 and the lift arm 471 as the center of rotation (see arrow α in FIG. 3).

[0033] The seat base 5 is a base on which a seat that covers the top of a container Ct that is to be mounted or that can be mounted on the pair of body frames F is placed, and is disposed on the pair of body frames F. As also shown in FIGS. 4 and 5 , the seat base 5 is made up of a plurality of portions 6, 7A, 7B including a portion 7A that is welded to one of the pair of body frames F and a portion 7B that is welded to the other of the pair of body frames F. Adjacent portions of the plurality of portions 6, 7A, 7B are fastened to each other by fastening members 8.

[0034] Specifically, the seat base 5 has a base portion 6 on which the seat can be placed and a pair of feet 7 that support the base portion 6. The seat base 5 also has a plurality of fastening members 8. The seat base 5 is attached by welding to the subframe 41 between the cab 2 and the hook arm 481 in the traveling position (the position shown in FIGS. 1 and 3).

[0035] The base 6 has a mounting surface 61s that extends in the vehicle width direction and the vehicle length direction, and has a base main body 61 that is a plate-shaped base that is long in the vehicle width direction when viewed in a plane, a front fence portion 62 that is arranged at the front end of the base main body 61, and a rear fence portion 63 that is arranged at the rear end of the base main body 61.

[0036] In a plan view, the base main body 61 has a rectangular recess 611 recessed from the rear end toward the front in the center in the vehicle width direction. This base main body 61 has a plurality of through holes (bolt holes) 61a penetrating in the up-down direction in regions on both sides of the recess 611 in the vehicle width direction. These multiple through holes 61a are lined up at intervals in the vehicle width direction at both the front end and the rear end of the base main body 61.

[0037] This through hole 61a is used to connect the base 6 and the foot 7, and a fastening member 8 is inserted through it. In this embodiment, the inner diameter of the through hole 61a is larger than the portion of the fastening member 8 that passes through the through hole 61a (the shank of a bolt 81, which will be described later). The inner diameter of the through hole 61a is smaller than the head of the bolt 81. Furthermore, the through hole 61a is a perfect circle when viewed from the penetration direction, and its diameter is larger than the diameter of the threaded portion of the shank of the bolt 81. Therefore, it is possible to absorb play in the front-rear and left-right directions. Furthermore, in terms of the positional relationship with the through hole 7211 (see Figure 6) of the foot 7, through which the bolt 81 (fastening member 8) is inserted together with the through hole 61a when the base 6 and the foot 7 are connected, even if the centers of the through hole 61a of the base 6 and the through hole 7211 of the foot 7 are misaligned when viewed from the through hole direction due to manufacturing errors, etc., the inner diameter of the through hole 61a is larger than the diameter of the shank of the bolt 81 (in the example of this embodiment, it is larger than the inner diameter of the through hole 7211), so the shank of the bolt 81 can be inserted into the through hole 61a and the through hole 7211.

[0038] The front fence 62 extends from one end to the other in the vehicle width direction and also extends upward at the front end of the base main body 61. The rear fences 63 extend in the vehicle width direction and also extend upward at the rear end of the base main body 61 (regions on both sides of the recess 611).

[0039] One foot 7A of the pair of feet 7 extends in the vertical direction and is welded to one body frame F (more specifically, one sub-frame 41), and the other foot 7B of the pair of feet 7 extends in the vertical direction and is welded to the other body frame F (more specifically, the other sub-frame 41).

[0040] One of the legs 7A has a first main body portion 71A that extends in the vertical direction and in the vehicle length direction, and at least one connecting member 72 that connects the first main body portion 71A and the base portion 6. In this embodiment, one of the legs 7A has two connecting members 72.

[0041] The first main body portion 71A has a recess 712A that is recessed in a rectangular shape from the lower end toward the upper side. When viewed in the vehicle width direction, the first main body portion 71A has a U-shape with an open portion facing downward.

[0042] The two connecting members 72 are attached to both ends in the vehicle length direction at the upper end of the first main body portion 71A. Each connecting member 72 has a support portion 721 extending in the vehicle width direction and a hanging portion 722 extending downward from the support portion 721.

[0043] The support portion 721 is a portion that is fixed to the base main body 61 by the fastening member 8. The support portion 721 has an abutment surface 721a that abuts against the base main body 61 from below, and has a plurality of through holes 7211 that penetrate in the up-down direction at positions corresponding to the through holes 61a of the base main body 61. The support portion 721 of this embodiment has three through holes 7211 (the same number as the number of through holes 61a in corresponding positions of the base 6). These through holes 7211 are used to connect the base 6 and the foot portion 7, and the fastening member 8 is inserted through the through holes 7211 together with the through holes 61a of the base 6. The inner diameter of the through hole 7211 of this embodiment is smaller than the inner diameter of the through hole 61a of the base 6 and larger than the outer diameter of the portion of the fastening member 8 that is inserted through the through hole 7211 (more specifically, the shank of a bolt 81, which will be described later).

[0044] Hanging portion 722 is a portion that is fixed to first main body portion 71A by fastening members 8. Hanging portion 722 abuts against first main body portion 71A in the vehicle length direction and is fixed by fastening members 8. Hanging portion 722 in the present embodiment is fixed to first main body portion 71A by a plurality of fastening members 8 (three in the example shown in FIG. 4).

[0045] The other foot 7B has a second main body portion 71B that extends in the vertical direction and in the vehicle length direction, and at least one connecting member 72 that connects the second main body portion 71B to the base portion 6. In this embodiment, the other foot 7B has two connecting members 72. The connecting members 72 of the other foot 7B have the same configuration as the connecting members of the one foot 7A.

[0046] The second main body portion 71B has a circular through-hole 711 penetrating through the upper portion in the vehicle width direction, and a rectangular recessed portion 712B recessed upward from the lower end.

[0047] The fastening members 8 are used to connect adjacent portions of the multiple portions 6, 7A, 7B that make up the seat base 5. Specifically, the fastening members 8 connect the base portion 6 to one of the foot portions 7A (more specifically, the two connecting members 72). The fastening members 8 also connect the base portion 6 to the other foot portion 7B (more specifically, the two connecting members 72). The fastening members 8 of this embodiment include a bolt 81 and a nut 82 that screws onto the shank of the bolt 81. In the seat base 5 of this embodiment, the fastening members 8 are also used to connect the first and second main body portions 71A, 71B that make up the foot portions 7A, 7B to the respective connecting members 72.

[0048] When the seat base 5 configured as above is installed (attached) to the container transport vehicle 1, first, the lower end of one foot 7A (or the other foot 7B) is welded to the body frame F (more specifically, the subframe 41), and then the lower end of the other foot 7B (or one foot 7A) is welded to the body frame F (more specifically, the subframe 41). When the one foot 7A and the other foot 7B are welded independently to the body frame F in this manner, the upper ends (more specifically, the connecting members 72) of the respective feet 7A, 7B are connected to the base 6 by the fastening members 8.

[0049] Furthermore, the first main body portion 71A and the second main body portion 71B may each be welded independently to the vehicle frame F (more specifically, the subframe 41), and the connecting member 72 may be connected to the upper end of the first main body portion 71A and the upper end of the second main body portion 71B by fastening members 8, respectively, and then the base portion 6 may be connected to each connecting member 72 (each foot portion 7A, 7B) by the fastening members 8.

[0050] The container transport vehicle 1 described above comprises a vehicle body (chassis) 3 having a pair of vehicle body frames F each extending in the vehicle length direction and spaced apart in the vehicle width direction, and a seat base 5 that is arranged on the pair of vehicle body frames F and on which a sheet that covers the top of a container (packing box) Ct that is to be mounted or can be mounted on the pair of vehicle body frames F can be placed. The seat base 5 is composed of multiple parts (in this embodiment, a base portion 6, one foot portion 7A, and the other foot portion 7B) including a portion 7A welded to one of the pair of body frames F and a portion 7B welded to the other of the pair of body frames F, and adjacent parts of these multiple parts 6, 7A, 7B are connected to each other by fastening members 8.

[0051] According to this configuration, when attaching the seat base 5 to the body frame F, the portion 7A to be welded to one body frame F and the portion 7B to be welded to the other body frame F are each welded to the body frame F, and then the remaining portion 6 is connected with the fastening member 8, thereby reducing the space and weight required during the work, thereby improving workability.

[0052] In addition, in the container transport vehicle 1 of this embodiment, the seat base 5 (multiple parts) includes a base portion 6 on which a seat can be placed and a pair of feet 7 that support the base portion 6, and one foot portion 7A of the pair of feet 7 extends in the vertical direction and is welded to one of the body frames F, and the other foot portion 7B of the pair of feet 7 extends in the vertical direction and is welded to the other body frame F, and the base portion 6 and the one foot portion 7A are connected by a fastening member 8, and the base portion 6 and the other foot portion 7B are connected by a fastening member 8.

[0053] According to this configuration, it is only necessary to weld the legs 7A and 7B, excluding the heavy base portion, during the welding work, thereby improving the efficiency of the welding work.

[0054] In addition, in the container transport vehicle 1 of this embodiment, the fastening member 8 has a bolt 81, and the connecting portion between adjacent portions 6, 7 has through holes (bolt holes) 61a, 7211 for connection, and the through hole 61a is larger than the shaft portion of the bolt 81.

[0055] According to this configuration, when adjacent parts 6 and 7 are fastened together with a bolt, the through hole 61a is larger than the shaft of the bolt 81, so that manufacturing errors of each part to be connected are absorbed, thereby improving the workability of connecting parts 6 and 7 together.

[0056] The cargo handling vehicle of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, the configuration of one embodiment can be added to the configuration of another embodiment, or part of the configuration of one embodiment can be replaced with the configuration of another embodiment. Furthermore, part of the configuration of one embodiment can be deleted.

[0057] Although the cargo handling vehicle 1 in the above embodiment is a container transporter, it is not limited to this configuration. The cargo handling vehicle 1 may be, for example, a dump truck or a flatbed truck (a non-dump truck such as a light truck). In other words, the cargo handling vehicle 1 may be any vehicle that is equipped with a cargo box and uses a sheet to cover the top of the cargo box.

[0058] Furthermore, although the cargo handling vehicle 1 in the above embodiment is capable of carrying a cargo box (in the example of the above embodiment, a container Ct), the vehicle itself is not provided with a cargo box, but the present invention is not limited to this configuration. The cargo handling vehicle 1 may also be provided with a cargo box in the vehicle itself, like a dump truck or the like.

[0059] Furthermore, in the cargo handling vehicle 1 of the above embodiment, the foot portions 7A, 7B (first and second main body portions 71A, 71B) of the seat base 5 are welded only to the subframe 41, but this configuration is not limiting. The foot portions 7A, 7B (first and second main body portions 71A, 71B) may be welded only to the chassis frame 31, or may be welded to both the chassis frame 31 and the subframe 41.

[0060] Furthermore, although the seat base 5 in the above embodiment can be separated into the base portion 6 and the foot portions 7A, 7B, the present invention is not limited to this configuration. For example, as shown in Fig. 7, the seat base 5A may be configured so that the base portion 6 and the foot portion 7 can be separated, and the foot portion 7 can be separated into multiple portions 70 in the vertical direction. In other words, the seat base 5A may be configured so that the base portion 6 and the foot portion 7 can be separated into multiple portions in the vertical direction.

[0061] Furthermore, the seat base 5B may be configured so that the base portion 6 can be separated into a plurality of portions 60 in the vehicle width direction, as shown in Fig. 8. In the example shown in Fig. 8, the portions 60 constituting the base portion 6 and the foot portions 7A, 7B are configured so as not to be separated. In other words, the seat base 5B may be configured so as to be separable into a plurality of portions in the vehicle width direction (lateral direction).

[0062] 9, the seat base 5C may be configured so that the base portion 6 and the foot portion 7 are separable, and the base portion 6 is separable into a plurality of portions 60 in the vehicle width direction. That is, the seat base 5C may be separable into a plurality of portions both in the vertical direction and the vehicle width direction.

[0063] In addition, in the seat base 5 of the above embodiment, the fastening members 8 that connect the adjacent portions 6 and 7 are the bolts 81 and the nuts 82, but are not limited to this configuration. The fastening members 8 may also be screws, rivets, etc.

[0064] Furthermore, although the through-holes (bolt holes) 61a of the base portion 6 in the above embodiment are circular, the shape is not limited to this. The through-holes (bolt holes) 61a may be elongated holes such as ovals. [Explanation of symbols]

[0065] 1...container transport vehicle (cargo handling vehicle), 2...cab, 3...vehicle body, 31...chassis frame, 4...body part, 41...subframe, 42...horizontal frame, 43...horizontal axle, 45...cargo handling device, 46...dump arm part, 461...dump arm, 462...middle horizontal frame, 463...front end horizontal frame, 464...support axis, 47...lift arm part, 471...lift arm, 472...lift cylinder, 48...hook arm part, 481...hook arm, 482...hook, 483...hook cylinder, 5...seat base, 5, 5A, 5B, 5C...seat base, 6...base part, 60...part, 61...base main body, 61a...through hole (bolt hole), 61s... Placing surface, 611...recess, 62...front fence portion, 63...rear fence portion, 7...foot portion, 7A...one foot portion, 71A...first main body portion, 712A...recess, 7B...other foot portion, 71B...second main body portion, 711...through hole, 712B...recess, 72...connecting member, 721...support portion, 721a...abutment surface, 7211...through hole (bolt hole), 722...hanging portion, 8...fastening member, 81...bolt, 82...nut, 100...cargo handling vehicle, 101...subframe, 102...vehicle body, 103...cargo handling device, 110...seat base, 111...base portion, 112...foot portion, A...support leg, Ct...container (shipping box), E...engagement portion, F...vehicle body frame, G...rear gate, W...traveling wheel

Claims

1. a vehicle body having a pair of body frames each extending in a vehicle length direction and spaced apart in a vehicle width direction; a seat base that is disposed on the pair of body frames and on which a seat that covers an upper portion of a cargo box that is mounted or can be mounted on the pair of body frames can be placed, the seat base is configured by a plurality of portions including a portion welded to one of the pair of body frames and a portion welded to the other of the pair of body frames, In this cargo handling vehicle, adjacent portions of the plurality of portions are connected to each other by fastening members.

2. the plurality of portions include a base portion on which the seat can be placed and a pair of feet supporting the base portion, one of the pair of foot portions extends in the vertical direction and is welded to one of the vehicle body frames; the other of the pair of foot portions extends in the vertical direction and is welded to the other vehicle body frame, 2. The cargo handling vehicle according to claim 1, wherein the platform and one of the legs are connected by the fastening member, and the platform and the other leg are connected by the fastening member.

3. The fastening member includes a bolt, The connecting portions between the adjacent portions have bolt holes for the connection, 3. The cargo handling vehicle according to claim 1, wherein the bolt hole is larger than the shank of the bolt.

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