Towed vehicle

Abstract

To provide a towed vehicle capable of moving a coupling portion to a coupled position and to a non-coupled position.SOLUTION: A towed vehicle includes: a coupling portion that is coupled to a towing vehicle; a stopper portion that stops a container loaded on a vehicle body; and an operating portion to which an operation for selecting either one of a first state and a second state is given. The coupling portion is located at a coupled position apart from the vehicle body forward when the first state is selected by the operating portion, and is located at a non-coupled position located behind the coupled position when the second state is selected by the operating portion. The stopper portion is interlocked with the coupling portion, is located at a stop position to stop the container when the first state is selected by the operating portion, and is located at a non-stop position apart from the container when the second state is selected by the operating portion.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] This specification relates to a towed vehicle. [Background technology]

[0002] Conventionally, for example, a towed vehicle is equipped with a coupling section that couples to a towing vehicle (for example, Patent Document 1). However, for example, there are cases where a container loaded on the body of the towing vehicle is transferred to the body of the towed vehicle while the towing vehicle is positioned in front of the towed vehicle. In such cases, there is a demand to move the coupling section, which is located at the coupling position where it is coupled to the towing vehicle, to a non-coupling position that is rearward of the coupling position. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-51875 Summary of the Invention [Problem to be solved by the invention]

[0004] Therefore, an object is to provide a towed vehicle whose coupling portion can be moved between a coupled position and an uncoupled position. [Means for solving the problem]

[0005] The towed vehicle is a coupling portion coupled to a towing vehicle; a stopper that stops the container placed on the vehicle body; an operation unit that is operated to select either the first state or the second state, the coupling portion is located at a coupled position away from the vehicle body forward when a first state is selected by the operation unit, and is located at a non-coupled position rearward of the coupled position when the second state is selected by the operation unit; The abutment stop portion is linked to the connecting portion, and when the first state is selected by the operating portion, it is positioned in an abutment stop position where it abuts and stops the container, and when the second state is selected by the operating portion, it is positioned in a non-abutment stop position where it is away from the container. [Brief explanation of the drawings]

[0006] [Figure 1] FIG. 1 is a side view of an articulated vehicle according to an embodiment, showing a vehicle traveling state; [Figure 2] FIG. 10 is a side view of the articulated vehicle according to the embodiment, showing a state in which a container is attached or detached. [Figure 3] FIG. 1 is a side view of a towed vehicle according to the embodiment; [Figure 4] 4 is an enlarged cross-sectional view of a main part taken along line IV-IV of FIG. 3, showing a state in which the first abutment portion is located at the abutment position. [Figure 5] FIG. 10 is a diagram showing a state in which the first contact portion is located in a non-contact position; [Figure 6] FIG. 1 is a side view of the towed device, showing the coupling portion in the coupled position; [Figure 7] FIG. 1 is a side view of the towed device, showing the coupling portion in the uncoupled position; [Figure 8] 1A and 1B are control circuit diagrams of the towed device according to the embodiment (a: a diagram showing a vehicle running state, b: a diagram showing a container attachment / detachment state). DETAILED DESCRIPTION OF THE INVENTION

[0007] In each drawing, the dimensions of the components may be enlarged or reduced relative to the actual dimensions, for example, to facilitate understanding, and the dimensional ratios between the drawings may not be consistent. Note that in each drawing, for example, to facilitate understanding, some of the components may be omitted.

[0008] Terms including ordinal numbers such as "first" and "second" are used to describe various components, but these terms are used only to distinguish one component from another, and the components are not particularly limited by these terms. The number of components including ordinal numbers is not particularly limited, and may be, for example, one. Furthermore, the ordinal numbers used in the following specification and drawings may differ from the ordinal numbers described in the claims.

[0009] An embodiment of a towed vehicle will be described below with reference to Figures 1 to 8. Note that the following embodiment is provided as an example to aid in understanding the configuration of the towed vehicle, and is not intended to limit the configuration of the towed vehicle.

[0010] As shown in Figures 1 and 2, a towed vehicle 10 is used in a combination vehicle 1. The combination vehicle 1 may, for example, as in this embodiment, be equipped with a towing vehicle 2 that tows the towed vehicle 10. Here, before describing the components of the towed vehicle 10, the towing vehicle 2 will be described.

[0011] The towing vehicle 2 may, for example, as in this embodiment, include a vehicle body 3 and a loading / unloading device 4 connected to the vehicle body 3 for loading and unloading the container 7. The vehicle body 3 may, for example, as in this embodiment, include a driver's cab 3a arranged at the front, a vehicle body frame 3b arranged at the rear on which the container 7 is placed, and a plurality of wheels 3c.

[0012] In the following description and drawings, the first direction D1 is also referred to as the front-to-rear direction (also referred to as the "first lateral direction") D1, the second direction D2 is also referred to as the left-to-right direction (also referred to as the "second lateral direction") D2, and the third direction D3 is also referred to as the up-down direction D3. In other words, each of the directions D1 to D3 is a direction seen from the perspective of a person (driver) sitting in the driver's seat in the driver's cab 3a of the towing vehicle 2 (articulated vehicle 1).

[0013] Of the front-to-rear direction D1, the direction of the arrow in the figure is the front direction, and the direction opposite to the arrow direction in the figure is the rear direction. Furthermore, of the left-to-right direction D2, the direction of the arrow in the figure is the left direction, and the direction opposite to the arrow direction in the figure is the right direction. Furthermore, of the up-down direction D3, the direction of the arrow in the figure is the up direction, and the direction opposite to the arrow direction in the figure is the down direction.

[0014] The cargo handling device 4 may, for example, as in this embodiment, include an arm 4a rotatably connected to the vehicle body 3 and a hook 4b fixed to the tip of the arm 4a. As a result, by rotating the arm 4a relative to the vehicle body 3 with the container 7 hooked onto the hook 4b, the container 7 can be transferred between the towing vehicle 2 and the towed vehicle 10, or loaded or unloaded between the towing vehicle 2 and the ground.

[0015] As shown in Figures 1 to 3, the towed vehicle 10 includes a vehicle body 11 on which a container 7 is placed, and a towing device 20 that connects the vehicle body 11 to the towing vehicle 2. The towed vehicle 10 may also include first to third stopping devices 30, 12, and 13 that stop the container 7 placed on the vehicle body 11, for example, as in this embodiment.

[0016] The vehicle body 11 may, for example, as in this embodiment, include a vehicle body frame 14 on which the container 7 is placed, and a plurality of wheels 15 spaced apart in the fore-and-aft direction D1. This allows the towed vehicle 10 to support its own weight with the wheels 15. Therefore, the towed vehicle 10 is a vehicle generally called a full trailer.

[0017] 3, the second abutment device 12 may include, for example, a second abutment part 12a that abuts and stops the container 7 placed on the vehicle body 11, a second operating part 12b that is operated, and a second operating part 12c that operates the second abutment part 12a by operating the second operating part 12b. As a result, by operating the second operating part 12b, the second abutment part 12a moves between an abutment position (position shown in FIG. 3) where it abuts and stops the container 7 and a non-abutment position where it is separated from the container 7.

[0018] Although not particularly limited, for example, as in the present embodiment, the second operating unit 12b may be a handle, and the second acting unit 12c may be a rotation shaft fixed to the second operating unit 12b and the second abutment unit 12a. As a result, when the second operating unit 12b is operated and the second acting unit 12c rotates about an axis in the front-rear direction D1, the second abutment unit 12a is positioned at the abutment position or the non-abutment position.

[0019] For example, as in this embodiment, the second abutment portion 12a may be disposed forward of the container 7, and may abut and stop the container 7 in the front-rear direction D1 (specifically, from the front) when located at the abutment position. Although not shown, the second abutment portion 12a may be disposed below the vehicle body 11 when located at the non-abutment position.

[0020] The third abutting device 13 may, for example, as in this embodiment, include a third abutting portion 13a that abuts and stops the container 7 placed on the vehicle body 11. For example, as in this embodiment, the third abutting portion 13a may be arranged rearward of the container 7 and fixed immovably to the vehicle body 11 so as to abut and stop the container 7 in the fore-and-aft direction D1 (specifically, from behind).

[0021] As a result, the second abutting device 12 and the third abutting device 13 sandwich the container 7 in the front-rear direction D1. Therefore, movement of the container 7 relative to the vehicle body 11 in the front-rear direction D1 can be suppressed.

[0022] The second abutment portion 12a is disposed forward of the container 7, and the third abutment portion 13a is disposed rearward of the container 7. As a result, when the container 7 is placed on the vehicle body 11, the outsides of the second abutment portion 12a and the third abutment portion 13a in the left-right direction D2 are open, i.e., are not covered by the container 7. Therefore, the second abutment portion 12a and the third abutment portion 13a are easily visible from outside the towed vehicle 10 (for example, when viewed in the left-right direction D2).

[0023] 3 to 5, the first abutting device 30 includes a first abutting section 31 that abuts against and stops the container 7 placed on the vehicle body 11, and the towed vehicle 10 includes a first operating section 40 that is operated. For example, as in this embodiment, the first abutting section 31 may be movably connected to the middle of the vehicle body 11 in the fore-and-aft direction D1.

[0024] Although not particularly limited, the number of first abutment devices 30 may be, for example, two as in this embodiment, or may be, for example, one, or may be, for example, three or more. Furthermore, although not particularly limited, the number of first abutment parts 31 included in the first abutment device 30 may be, for example, two as in this embodiment, or may be, for example, one, or may be, for example, three or more.

[0025] 4 and 5, the first abutment device 30 may include a first operating unit 32 that operates the first abutment unit 31 by operating a first operating unit 40 (see FIGS. 3 and 8), for example. As a result, by operating the first operating unit 40, the first abutment unit 31 moves between an abutment position (position shown in FIG. 4) where it abuts and stops the container 7 and a non-abutment position (position shown in FIG. 5) where it is separated from the container 7.

[0026] There is no particular limitation on the configuration of the first operating unit 32. For example, as in this embodiment, the first operating unit 32 may include a drive source (not shown, e.g., a cylinder) and a link mechanism that transmits the drive of the drive source to the first abutment / stop units 31, 31.

[0027] The body frame 14 may include, for example, front and rear frames 14a, 14b extending in the front-rear direction D1 and left and right frames 14c extending in the left-right direction D2, as in this embodiment. Also, the container 7 may include, for example, a container frame 7a extending in the front-rear direction D1 at its lower end, as in this embodiment.

[0028] 4, the first abutment portion 31 may be configured to abut and stop the container frame 7a of the container 7 in the left-right direction D2 and the up-down direction D3. This makes it possible to prevent the container 7 from moving in the left-right direction D2 and the up-down direction D3 relative to the vehicle body 11.

[0029] Note that the container frame 7a of the container 7 may be placed on front and rear frames (hereinafter also referred to as "upper front and rear frames") 14a that constitute the upper end of the vehicle body frame 14 (specifically, the vehicle body 11), as in this embodiment. Then, for example, the upper end of the first abutting portion 31 (a portion that is arranged above the upper front and rear frames 14a) may be arranged inside the container frame 7a in the left-right direction D2 and may overlap with the container frame 7a when viewed in the left-right direction D2.

[0030] As a result, the first abutment portions 31 are covered from the outside in the left-right direction D2 by the container 7 (specifically, the container frame 7a) placed on the vehicle body 11. Therefore, the first abutment portions 31 are difficult to see in the left-right direction D2 from outside the towed vehicle 10.

[0031] For example, as in this embodiment, the container frames 7a and the upper front and rear frames 14a may each be provided in pairs lined up in the left-right direction D2, and the pair of first abutment portions 31 may be disposed between the pair of container frames 7a and the pair of upper front and rear frames 14a. The entire first abutment portion 31 may overlap with the container 7 placed on the vehicle frame 14 and the vehicle body 11 when viewed in the left-right direction D2, as in this embodiment.

[0032] Furthermore, the first abutment portion 31 may be covered from above by the container 7 placed on the vehicle body 11, as in this embodiment. This makes it difficult for the first abutment portion 31 to be seen from above the towed vehicle 10. Note that the entire first abutment portion 31 may overlap with the container 7 placed on the vehicle body 11 when viewed in the up-down direction D3, as in this embodiment.

[0033] 6 and 7, the towed device 20 includes a rear device section 21 whose rear end is rotatably connected to the vehicle body 11 around an axis in the left-right direction D2, and a front device section 22 whose front end is rotatably connected to the rear end of the rear device section 21 around an axis in the left-right direction D2. The front device section 22 includes at its front end a connecting section 22a that is connected to a connected section 3d that is arranged at the rear end of the towing vehicle 2.

[0034] Furthermore, the towed device 20 may include, for example, a towing operation unit 23 that operates the rear device unit 21 and the front device unit 22 by operating the first operation unit 40 (see FIGS. 3 and 8), as in this embodiment. As a result, by operating the first operation unit 40, the coupling unit 22a moves between a coupled position (position shown in FIG. 6) that is away from the vehicle body 11 forward and a non-coupled position (position shown in FIG. 7) that is rearward of the coupled position.

[0035] There is no particular limitation on the configuration of the traction unit 23. For example, as in this embodiment, the traction unit 23 may include a drive source (for example, an inflatable / deflated bag) 23a, a pushing unit 23b that pushes the rear device unit 21 from behind by being driven by the drive source 23a, and an elastic body 23c that connects the vehicle body 11 and the front device unit 22.

[0036] 6, the driving source 23a expands, causing the pushing portion 23b to move forward and push the rear device portion 21. As a result, the rear device portion 21 rotates about an axis in the left-right direction D2 relative to the vehicle body 11, and the front device portion 22 rotates about an axis in the left-right direction D2 relative to the rear device portion 21, so that the towed device 20 assumes an unfolded posture. Therefore, the rear device portion 21 and the front device portion 22 each extend along the front-rear direction D1 when viewed in the left-right direction D2, and the connecting portion 22a is located at the connected position.

[0037] 7, when the driving source 23a is retracted, the pushing portion 23b moves rearward. As a result, the rear portion 21 rotates about an axis in the left-right direction D2 relative to the vehicle body 11, and the front portion 22 rotates about an axis in the left-right direction D2 relative to the rear portion 21, so that the towed device 20 assumes a stored posture. Therefore, the front portion 22 is bent relative to the rear portion 21 when viewed in the left-right direction D2, and the connecting portion 22a is positioned in the unconnected position.

[0038] Although not particularly limited, in this embodiment, the front device section 22 extends in the front-to-rear direction D1 as viewed in the left-to-right direction D2 due to the elastic body 23c, and the rear device section 21 extends downward as it moves forward as viewed in the left-to-right direction D2. This allows the rear end of the towing vehicle 2 to approach the front end of the towed vehicle 10 so that the rear end of the body 3 of the towing vehicle 2 is positioned above the towing device 20 when the towed device 20 is in the stored position.

[0039] As shown in Fig. 8, the towed vehicle 10 may be equipped with, for example, a control device 16 that controls the towed device 20 and the first stop device 30. The configuration of the control device 16 is not particularly limited. The control device 16 may be, for example, a compressed air circuit as in this embodiment, or may be, for example, a hydraulic circuit, or may be, for example, an electric circuit.

[0040] The control device 16 may include, for example, as in this embodiment, a tank 16a that stores compressed air, a first supply system 16b that supplies the compressed air in the tank 16a to the towed device 20, and a second supply system 16c that supplies the compressed air in the tank 16a to the first stop device 30. Furthermore, each of the supply systems 16b and 16c may include, for example, a switching valve 16d (for example, a three-way valve) as in this embodiment.

[0041] The first operating unit 40 is operated to select either a first state, which is a vehicle traveling state, or a second state, which is a container attachment / detachment state. The configuration of the first operating unit 40 is not particularly limited. The first operating unit 40 may be, for example, a selector switch as in the present embodiment, or may be, for example, a touch panel, a handle, or the like.

[0042] 8(a), when the vehicle traveling state is selected with the first operating unit 40, the control device 16 supplies compressed air to the towed device 20. This causes the towed device 20 to assume an unfolded position, and the coupling section 22a is located in the coupled position. Therefore, the coupling section 22a of the towed device 20 is coupled to the coupled section 3d of the towing vehicle 2, allowing the combination vehicle 1 to travel with the towed vehicle 10 connected to the towing vehicle 2.

[0043] Moreover, when the vehicle traveling state is selected by the first operating unit 40, the control device 16 supplies compressed air to the first abutting device 30. As a result, the first abutting unit 31 is positioned at the abutting position, so that the container 7 can be prevented from moving relative to the vehicle body 11.

[0044] 8(b), when the container attachment / detachment state is selected with the first operating unit 40, the control device 16 releases the compressed air of the first abutting device 30 to the atmosphere. This positions the first abutting unit 31 in the non-abutting position, allowing the container 7 to be loaded onto or unloaded from the towed vehicle 10.

[0045] Furthermore, when the container detachable state is selected with the first operating unit 40, the control device 16 releases the compressed air in the towed device 20 to the atmosphere. This causes the towed device 20 to assume a stored position, and the coupling portion 22a is positioned in the uncoupled position. This allows the rear end of the towing vehicle 2 to approach the front end of the towed vehicle 10, allowing the container 7 to be transferred between the towing vehicle 2 and the towed vehicle 10.

[0046] In this way, by operating the common first operating unit 40, the towed device 20 and the first abutting device 30 are interlocked, and the connecting portion 22a and the first abutting device 31 can be positioned in appropriate positions. Moreover, although the first abutting device 31 is difficult to see, by operating the common first operating unit 40, the towed device 20 and the first abutting device 30 are interlocked, so that the first abutting device 31 can be reliably positioned in appropriate positions together with the connecting portion 22a. Therefore, for example, it is possible to prevent forgetting to operate the first abutting device 30.

[0047] As described above, the towed vehicle 10, as in this embodiment, a coupling portion 22a coupled to the towing vehicle 2; a stopper portion (in this embodiment, a first stopper portion) 31 that stops the container 7 placed on the vehicle body 11; an operation unit (in this embodiment, a first operation unit) 40 that is operated to select either the first state or the second state, When the first state is selected by the operation unit 40, the coupling portion 22a is located at a coupled position away from the vehicle body 11 in the forward direction, and when the second state is selected by the operation unit 40, the coupling portion 22a is located at a non-coupled position that is rearward of the coupled position; The abutment stop portion 31 is interlocked with the connecting portion 22a, and is positioned at an abutment stop position where it abuts and stops the container 7 when the first state is selected by the operating portion 40, and is positioned at a non-abutment stop position where it is separated from the container 7 when the second state is selected by the operating portion 40. This configuration is preferable.

[0048] According to this configuration, when the first state is selected by the operation unit (first operation unit in this embodiment) 40, the coupling part 22a is located at a coupled position away from the vehicle body 11 in the forward direction, whereas when the second state is selected by the operation unit 40, the coupling part 22a is located at a non-coupled position that is further rearward than the coupled position. This allows the coupling part 22a to be moved between the coupled position and the non-coupled position.

[0049] Furthermore, when the first state is selected with the operating unit 40, the connecting portion 22a is located in the connected position and the abutment stop portion (first abutment stop portion in this embodiment) 31 is located in the abutment stop position, whereas when the second state is selected with the operating unit 40, the connecting portion 22a is located in the non-connected position and the abutment stop portion 31 is located in the non-abutment stop position. As a result, by operating one operating unit 40, the connecting portion 22a and the abutment stop portion 31 are interlocked, and the connecting portion 22a and the abutment stop portion 31 can be located in appropriate positions.

[0050] In addition, the towed vehicle 10, as in this embodiment, a towed device 20 that connects the vehicle body 11 and the towing vehicle 2; The towed device 20 is a rear device portion 21 rotatably connected to the vehicle body 11 about an axis in the left-right direction D2; a device front section 22 rotatably connected to the device rear section 21 around an axis in the left-right direction D2, and the connecting section 22 a is provided at a front end section, This configuration is preferable.

[0051] According to this configuration, the connecting portion 22a moves when the rear device portion 21 rotates about an axis in the left-right direction D2 relative to the vehicle body 11 and the front device portion 22 rotates about an axis in the left-right direction D2 relative to the rear device portion 21. As a result, when the operating portion (first operating portion in this embodiment) 40 is operated, the connecting portion 22a moves between the connected position and the unconnected position.

[0052] In addition, in the towed vehicle 10, as in this embodiment, The abutment portion (in this embodiment, the first abutment portion) 31 is covered from the outside in the left-right direction D2 by the container 7 placed on the vehicle body 11. This configuration is preferable.

[0053] According to this configuration, the abutment stop portion 31 (in this embodiment, the first abutment stop portion) is covered from the outside in the left-right direction D2 by the container 7 placed on the vehicle body 11, and therefore the abutment stop portion 31 is difficult to see. On the other hand, by operating one operation portion (in this embodiment, the first operation portion) 40, the connecting portion 22a and the abutment stop portion 31 are interlocked, so that the abutment stop portion 31 can be reliably positioned at an appropriate position together with the connecting portion 22a.

[0054] The towed vehicle 10 is not limited to the configuration of the embodiment described above, nor is it limited to the effects described above. It goes without saying that various modifications can be made to the towed vehicle 10 without departing from the spirit of the present invention. For example, it goes without saying that one or more of the configurations and methods of the various modified examples described below may be selected and used in the configurations and methods of the embodiment described above.

[0055] (A) In the towed vehicle 10 according to the above embodiment, the abutment portions 31 that interlock with the coupling portion 22a of the towed device 20 are all of the first abutment portions 31 among the plurality of first abutment portions 31. However, the towed vehicle 10 is not limited to this configuration.

[0056] (A-1) For example, the abutment stop portion interlocking with the connecting portion 22a of the towed device 20 may be the second abutment stop portion 12a. Specifically, the connecting portion 22a may be located in the connected position when the first state is selected with the second operating portion 12b, and located in the non-connected position when the second state is selected with the second operating portion 12b, and the second abutment stop portion 12a may be located in the abutment stop position when the first state is selected with the second operating portion 12b, and located in the non-abutment stop position when the second state is selected with the second operating portion 12b.

[0057] In such a configuration, for example, the first state may be selected when the second operating unit 12b, which is a handle that is rotated, is positioned at a first position, and the second state may be selected when the second operating unit 12b is positioned at a second position. Further, for example, the traction operating unit 23 may be a link mechanism that connects the second operating unit 12b (second operating unit 12c) and the connecting unit 22a.

[0058] (A-2) Also, for example, the abutment stop portion interlocking with the connecting portion 22a of the towed device 20 may be the first abutment stop portion 31 and the second abutment stop portion 12a. Specifically, the first abutment stop portion 31 and the second abutment stop portion 12a may be interlocked with the connecting portion 22a, and may be configured to be located in the abutment stop position when the first state is selected by the operating portion (for example, the first operating portion 40), and to be located in the non-abutment stop position when the second state is selected by the operating portion 40.

[0059] (A-3) Also, for example, the third abutment stop portion 13a may be configured to be movable between an abutment stop position and a non-abutment stop position, and the abutment stop portions interlocked with the connecting portion 22a of the towed device 20 may be the first abutment stop portion 31 and the third abutment stop portion 13a. Specifically, the first abutment stop portion 31 and the third abutment stop portion 13a may be configured to interlock with the connecting portion 22a, and to be located at the abutment stop position when the first state is selected by the operating portion (for example, the first operating portion 40), and to be located at the non-abutment stop position when the second state is selected by the operating portion 40.

[0060] (A-4) Also, for example, the third abutment stop portion 13a may be configured to be movable between an abutment stop position and a non-abutment stop position, and the abutment stop portions interlocked with the connecting portion 22a of the towed device 20 may be the first to third abutment stop portions 31, 12a, 13a. Specifically, the first to third abutment stop portions 31, 12a, 13a may be configured to interlock with the connecting portion 22a, and to be located at the abutment stop position when the first state is selected by the operating portion (for example, the first operating portion 40), and to be located at the non-abutment stop position when the second state is selected by the operating portion 40.

[0061] (A-5) Also, for example, the abutment stop portion interlocking with the connecting portion 22a of the towed device 20 may be a part of the plurality of first abutment stop portions 31. In short, the abutment stop portion interlocking with the connecting portion 22a of the towed device 20 may be at least one of the plurality of abutment stop portions (specifically, the plurality of first abutment stop portions 31, the plurality of second abutment stop portions 12a, and the plurality of third abutment stop portions 13a).

[0062] (B) In the towed vehicle 10 according to the above embodiment, the towed device 20 includes a rear device section 21 and a front device section 22, and when the towed device 20 assumes the deployed position, the coupling section 22a is positioned in the connected position, and when the towed device assumes the stored position, the coupling section 22a is positioned in the disconnected position. However, the towed vehicle 10 is not limited to this configuration.

[0063] For example, the towed device 20 may be configured to include an extension / contraction section (e.g., a linear motion (slide) mechanism including a cylinder) that extends and contracts in the front-to-rear direction D1, and the connecting section 22a may be fixed to the tip of the extension / contraction section. Then, for example, when the extension / contraction section extends, the connecting section 22a moves forward to the connected position, and when the extension / contraction section contracts, the connecting section 22a moves rearward to the unconnected position.

[0064] (C) Furthermore, in the towed vehicle 10 according to the above embodiment, the abutment stop portion (first abutment stop portion) 31 that interlocks with the coupling portion 22a is configured to be covered from the outside in the left-right direction D2 by the container 7 placed on the vehicle body 11. However, the towed vehicle 10 is not limited to this configuration. For example, the outside in the left-right direction D2 of the abutment stop portion (first abutment stop portion) 31 that interlocks with the coupling portion 22a may be open, i.e., not covered by the container 7.

[0065] (D) Furthermore, in the towed vehicle 10 according to the above embodiment, the portion of the container 7 that covers the upper end of the first abutment portion 31 (the portion located above the vehicle body frame 14 (specifically, the vehicle body 11)) from the outside in the left-right direction D2 is configured as a container frame 7a placed on the upper front and rear frames 14a. However, the towed vehicle 10 is not limited to this configuration.

[0066] For example, the part of the container 7 that covers the upper end of the first abutment portion 31 (the part that is positioned higher than the body frame 14 (specifically, the body 11)) from the outside in the left-right direction D2 may be any part that is positioned higher in the left-right direction D2 than the upper end of the first abutment portion 31 and that overlaps with the upper end of the first abutment portion 31 when viewed in the left-right direction D2.

[0067] (E) Furthermore, in the towed vehicle 10 according to the above embodiment, the non-coupled position of the coupling portion 22a is located forward of the front end of the vehicle body 11. However, the towed vehicle 10 is not limited to this configuration. For example, the non-coupled position of the coupling portion 22a may be located rearward of the front end of the vehicle body 11.

[0068] (F) For example, the order of execution of each step, such as the operations, procedures, steps, and stages, in the methods and apparatuses shown in the claims, specifications, and drawings, can be implemented in any order, as long as the result of a previous step is not used in a subsequent step. For example, even if a description is made using "first," "next," etc. for convenience, this does not mean that the steps must be executed in that order. [Explanation of symbols]

[0069] 1...articulated vehicle, 2...towing vehicle, 3...vehicle body, 3a...driver's cab, 3b...vehicle body frame, 3c...wheel, 3d...coupled portion, 4...loading device, 4a...arm, 4b...hook, 7...container, 7a...container frame, 10...towed vehicle, 11...vehicle body, 12...second stop device, 12a...second stop portion, 12b...second operating portion, 12c...second operating portion, 13...third stop device, 13a...third stop portion, 14...vehicle body frame, 14a, 14b...front and rear frames, 14c...left and right frames, 15...wheels, 16...control device, 16a...tank, 16b...first supply system, 16c...second supply system, 16d...switching valve, 20...towed device, 21...rear part of device, 22...front part of device, 22a...connecting part, 23...towing operation part, 23a...driving source, 23b...pushing part, 23c...elastic body, 30...first abutment device, 31...first abutment part, 32...first operation part, 40...first operating part, D1...front-rear direction, D2...left-right direction, D3...up-down direction

Claims

1. a coupling portion coupled to a towing vehicle; a stopper that stops the container placed on the vehicle body; an operation unit that is operated to select either the first state or the second state, the coupling portion is located at a coupled position away from the vehicle body forward when a first state is selected by the operation unit, and is located at a non-coupled position rearward of the coupled position when the second state is selected by the operation unit; The abutment stop unit is linked to the coupling unit, and when the first state is selected by the operating unit, is positioned at an abutment stop position where it abuts and stops the container, and when the second state is selected by the operating unit, is positioned at a non-abutment stop position where it is separated from the container.

2. a towed device connecting the vehicle body and the towing vehicle; The towed device is a rear device portion rotatably connected to the vehicle body about an axis in the left-right direction; 2. The towed vehicle according to claim 1, further comprising: a front device portion rotatably connected to the rear device portion about an axis in the left-right direction, the connecting portion being provided at a front end thereof.

3. The towed vehicle according to claim 1 or 2, wherein the abutment portion is covered from the outside in the left-right direction by the container placed on the vehicle body.

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