Container attachment / detachment vehicle

Abstract

To provide a container attachment / detachment vehicle capable of improving stability of a vehicle body in a right and left direction and effectively utilizing a space under a chassis at the time of unloading a container.SOLUTION: A container attachment / detachment vehicle including a cargo handling device for loading and unloading a container with respect to a chassis includes right and left support devices that suppress sinking of the chassis at the time of loading and unloading of the container by the cargo handling device. The right and left support devices are arranged with an interval from each other in both right and left sides of the chassis.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a container loading / unloading vehicle equipped with a loading / unloading device for loading / unloading containers onto / from a vehicle chassis. [Background technology]

[0002] There is a container loading / unloading vehicle that rotates an L-shaped loading arm toward the rear of the vehicle, hooks the end of the arm onto a container, and then rotates the loading arm forward to lift the container onto the chassis (Patent Document 1, etc.). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5546167 Summary of the Invention [Problem to be solved by the invention]

[0004] A container loading / unloading vehicle may be used as a tractor to tow a trailer. In this case, the container loading / unloading vehicle may also be used to load and unload containers onto the trailer being towed. In this case, a connecting member called a drawbar is provided at the front of the trailer for coupling to the tractor. The drawbar has a length sufficient to prevent interference between the containers loaded on the tractor and the trailer when the tractor and the trailer are turning. When loading containers onto a trailer using a container loading / unloading vehicle, the container loading / unloading vehicle cannot approach the deck of the trailer from the front due to interference with the drawbar. Therefore, as disclosed in FIG. 11 of Patent Document 1, the container loading / unloading vehicle is generally moved toward the rear of the trailer, avoiding the drawbar, and containers are loaded and unloaded from the trailer from the rear.

[0005] However, for example, after loading a container onto a trailer, when the trailer with the loaded container is towed by the container loading vehicle, the container loading vehicle must be moved around from the rear to the front of the trailer. Moreover, during this time, the container loading vehicle, which was facing away from the trailer, must also be turned to face the same direction as the trailer. This is not only time-consuming, but also requires a large space around the trailer to maneuver the container loading vehicle.

[0006] Therefore, considering the possibility of loading and unloading containers from the front using a container loading / unloading vehicle, one possible solution would be to utilize the space under the chassis of the container loading / unloading vehicle and lower the obstructing drawbar near the ground by, for example, providing it with a bending mechanism, so that the drawbar can be accommodated under the chassis of the container loading / unloading vehicle. However, the rear of the container loading / unloading vehicle is equipped with roller jacks that prevent the chassis from sinking when loading and unloading containers. When loading and unloading containers, the roller jacks are lowered to near the ground in the central region of the container loading / unloading vehicle's width direction, so even if the trailer drawbar is lowered to near the ground, the roller jacks will interfere. For this reason, it is difficult to accommodate the drawbar in the space under the chassis of the container loading / unloading vehicle and allow the container loading / unloading vehicle to approach the front of the trailer.

[0007] Furthermore, because the roller jacks have a certain width but are positioned near the center of the container loading / unloading vehicle's width, if the weight of the container load is significantly uneven on either side, the container loading / unloading vehicle may sway significantly from side to side when loading or unloading the container.Even if this does not pose a practical problem, the vehicle may sway significantly when loading or unloading a container, which can be a psychological burden for the user.

[0008] An object of the present invention is to provide a container loading / unloading vehicle that improves the lateral stability of the vehicle body when loading and unloading containers and that can effectively utilize the space under the chassis. [Means for solving the problem]

[0009] In order to achieve the above-mentioned object, the present invention provides a container loading / unloading vehicle equipped with a loading / unloading device for loading and unloading containers onto a chassis, the container loading / unloading vehicle being equipped with left and right support devices for preventing the chassis from sinking when the loading / unloading device loads and unloads the containers, the left and right support devices being arranged at a distance from each other on both the left and right sides of the chassis. [Effects of the Invention]

[0010] According to the present invention, the stability of the vehicle body in the left-right direction can be improved when loading and unloading containers, and the space under the vehicle chassis can be effectively utilized. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a diagram showing a container detachable vehicle and a trailer according to a first embodiment of the present invention. FIG. [Figure 2] FIG. 2 is a plan view of a container for the container detachable vehicle shown in FIG. [Figure 3] FIG. 2 is a side view of a container for the container detachable vehicle shown in FIG. [Figure 4] FIG. 2 is a rear view of the container for the container detachable vehicle shown in FIG. [Figure 5] FIG. 2 is a side view of the container detaching vehicle shown in FIG. [Figure 6] 2 is a diagram showing an example of the configuration of a container fastening device provided on the container loading / unloading vehicle shown in FIG. 1. FIG. [Figure 7] 2 is a diagram showing an example of the configuration of a container fastening device provided on the container loading / unloading vehicle shown in FIG. 1. FIG. [Figure 8] FIG. 2 is a rear view of the jack provided on the container loading / unloading vehicle shown in FIG. 1. [Figure 9] 2 is a side view showing the relationship between a jack provided on the container detachable vehicle shown in FIG. 1 and a drawbar of a trailer approaching the container detachable vehicle and the jack. FIG. [Figure 10] FIG. 2 is a perspective view of the deck of the trailer shown in FIG. 1. [Figure 11]FIG. 2 is a plan view of the container lock of the trailer shown in FIG. 1. [Figure 12] FIG. 2 is a front view of the container lock as seen from the front. [Figure 13] FIG. 12 is a cross-sectional view taken along line AA in FIG. [Figure 14] FIG. 2 is a perspective view of a container securing device of the trailer shown in FIG. 1. [Figure 15] 2 is an explanatory diagram of the operation of the container fastening device of the trailer shown in FIG. 1. [Figure 16] This is a diagram showing the process of transferring a container C from a container detachment vehicle to a trailer. [Figure 17] This is a diagram showing the process of transferring a container C from a container detachment vehicle to a trailer. [Figure 18] This is a diagram showing the process of transferring a container C from a container detachment vehicle to a trailer. [Figure 19] This is a diagram showing the process of transferring a container C from a container detachment vehicle to a trailer. [Figure 20] This is a diagram showing the process of transferring a container C from a container detachment vehicle to a trailer. [Figure 21] This is a diagram showing the process of transferring a container C from a container detachment vehicle to a trailer. [Figure 22] FIG. 10 is a rear view of a jack provided on a container detachable vehicle according to a second embodiment of the present invention. [Figure 23] FIG. 10 is a view of a rear wheel suspension provided on a container loading / unloading vehicle according to a third embodiment of the present invention, viewed from the vehicle width direction. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0013] First Embodiment -Container detachable vehicles and trailers- Fig. 1 is a diagram showing a container loader and trailer according to a first embodiment of the present invention. In the following description of the embodiment, the left and right in Fig. 1 refer to the front and rear of the container loader, trailer, and container, respectively. Note that this embodiment will be described taking as an example a case where the container loader is used as a tractor towing a trailer.

[0014] 1 is in a state where it is close to the rear of the container installation / removal vehicle 100, and a container C is transferred from the container installation / removal vehicle 100 to the trailer 200 by a loading and unloading device 120 mounted on the container installation / removal vehicle 100, and the loaded container C is transferred to the container installation / removal vehicle 100. The trailer 200 is coupled to the container installation / removal vehicle 100 to form a container transport vehicle train together with the container installation / removal vehicle 100, and travels while being towed by the container installation / removal vehicle 100.

[0015] The container loading / unloading vehicle 100 is a self-propelled vehicle and includes a chassis 110, a loading device 120, and guide rollers 130. The chassis 110 includes a chassis frame 111 connected to the rear of the driver's cab and a subframe 112 supported by the chassis frame 111, although the subframe 112 may be omitted. The loading device 120 loads and unloads containers C onto and from the chassis 110 by sliding and pivoting an L-shaped arm 121 back and forth. The loading device 120 is supported by the chassis 110, or the subframe 112 in this embodiment. A pair of left and right guide rollers 130 are provided at the rear end of the chassis 110, or the subframe 112 in this embodiment, and guide the main girders Cg of the containers C being loaded onto and unloaded from the container loading / unloading vehicle 100.

[0016] -container- FIG. 2 is a plan view of the container C shown in FIG. 1, FIG. 3 is a side view thereof, and FIG. 4 is a rear view thereof.

[0017] The container C loaded on the container detachable vehicle 100 or the trailer 200 is a box-shaped container with an open top, and its rear is formed by a rear gate Cw. The rear gate Cw is a downward-opening type, and its lower part rotates via a hinge at the top to open and close the rear opening of the container C. A pair of left and right main girders Cg extending in the fore-and-aft direction are provided at the bottom of the container C and protrude downward. The left and right main girders Cg are vertically long, rod-shaped members with an H-shaped cross section, and extend parallel to each other in the fore-and-aft direction. The main girders Cg extend the entire length of the container C. These main girders Cg serve as reinforcement materials for the container C, and are supported by the guide rollers 130 of the container detachable vehicle 100 and the support rollers 8 of the trailer 200. Therefore, the left and right spacing between the left and right main girders Cg is set to match the left and right spacing between the guide rollers 130 and the support rollers 8.

[0018] Furthermore, the container C is a container for a container detachable vehicle designed to be loaded onto the container detachable vehicle 100, and the bottom of the container C is provided with left and right engagement members Ce that engage with the container lashing device 140 (Fig. 5) provided on the container detachable vehicle 100. These engagement members Ce are members for locking the container C, and their configuration can be changed as appropriate as long as they have a shape that will engage with the container lashing device 140, but in this embodiment, a cylindrical member (body lock case) that extends in the front and rear directions is used as the engagement members Ce. In this embodiment, a pair of engagement members Ce (two in total), one on the left and one on the right, are provided, and are located between the left and right main girders Cg near the center of the container C in the fore-and-aft direction. The engagement members Ce are open at the front and rear.

[0019] The upper front surface of the container C is provided with a bar-shaped engaging portion Cb that engages with and disengages from the hook of the arm 121. In addition, a pair of left and right support legs Cl are fixed to the front of the bottom of the container C, and a pair of left and right rear rollers Cr, which serve as traveling rollers, are rotatably attached to the rear end of the bottom of the container C. Both the support legs Cl and the rear rollers Cr are positioned outside the main girder Cg in the left-right direction and protrude below the underside of the main girder Cg. When the rear rollers Cr and support legs Cl are in contact with a horizontal surface, the container C is substantially horizontal. However, when the container C is loaded on the chassis 110 of the container loading / unloading vehicle 100, the main girder Cg is supported by the pad 160 (Figure 5), and the support legs Cl and rear rollers Cr are slightly raised above the chassis 110.

[0020] -Container detaching vehicle- Figure 5 is a side view of the container detachment vehicle 100 shown in Figure 1. The container detachment vehicle 100 is equipped with a plurality of various mechanisms such as a cargo handling device 120, a container lashing device 140, and a jack 150. The cargo handling device 120, the container lashing device 140, and the jack 150 are movable mechanisms that operate by themselves or with their associated components.

[0021] Loading equipment The loading / unloading device 120 is a mechanism for lifting a container C onto the vehicle chassis 110 and lowering it from the vehicle chassis 110. The arm 121 of the loading / unloading device 120 is configured to include a dump arm (not shown) and a loading / unloading arm 123. The dump arm is an arm that stands up when the container C is tilted up on the vehicle chassis 110 to dump and unload the cargo of the loaded container C. This dump arm is disposed at the rear of the subframe 112 and is rotatably connected to the rear of the subframe 112 via a shaft 124 that extends in the left-right direction (vehicle width direction). The front-to-rear length of the dump arm is shorter than the front-to-rear length of the subframe 112. The loading / unloading arm 123 is an arm used for loading and unloading the container C, and is rotatably connected to the front (tip) of the dump arm, so that it can rotate back and forth on the vehicle chassis 110. Although detailed illustration is omitted, the loading / unloading arm 123 is configured to include a base arm connected to the subframe 112 and a hook arm connected to the tip of the base arm. The hook arm is formed in an L shape with a horizontal portion and an upright portion, and the horizontal portion is slidably inserted into the base arm. A hook 125 for hanging on a container C is provided at the tip (upper end) of the upright portion of the hook arm.

[0022] Although not specifically shown, the upper part of the upright part of the hook arm may be configured to be able to rotate freely back and forth relative to the lower part by a hydraulic cylinder (not shown), and the height and front-to-back position of the hook 125 may be changed on this rotation path. Also, in this embodiment, a configuration in which the hook arm slides relative to the base arm is exemplified, but the hook arm may also be configured to rotate instead of sliding relative to the base arm. Also, the loading / unloading arm 123 may not be divided into a base arm and a hook arm, but may be configured as an integrated L-shaped arm.

[0023] In the container loading / unloading vehicle 100 of this embodiment, when loading or unloading the container C, only the loading / unloading arm 123 rotates back and forth while the dump arm remains in a horizontal position, and when dumping, the dump arm rotates integrally with the loading / unloading arm 123. To enable this movement, a dump lock device (not shown) is provided that locks or unlocks the loading / unloading arm 123 relative to the dump arm.

[0024] The dump truck lock device comprises a lock pin and a lock hook that can be engaged with and disengaged from the lock pin. The lock pin is provided at the tip of the dump truck arm, and the lock hooks are rotatably provided on both sides of the base arm of the loading / unloading arm 123. The lock hook is engaged with and disengaged from the lock pin by utilizing the sliding movement of the hook arm relative to the base arm. For example, the lock hook is subjected to a force from a spring or the like in the direction that engages with the lock pin, and when the hook arm slides near the rear end, the hook arm pushes the operating rod, causing the lock hook to disengage from the lock pin.

[0025] In this case, when the hook arm retreats near the rear end, the lock between the loading / unloading arm 123 and the dump arm is released, and the extension and contraction of a lift cylinder (not shown) that drives the arm 121 causes the loading / unloading arm 123 to rotate back and forth relative to the dump arm. Conversely, when the hook arm moves forward, the loading / unloading arm 123 and the dump arm are locked, and when the lift cylinder extends and contracts in this state, the dump arm tilts up and down together with the loading / unloading arm 123. The configuration of such a dump lock device is described in Japanese Patent No. 5284541, etc.

[0026] ·Container securing equipment The container lashing device 140 is a mechanism for securing the container C loaded on the chassis 110. Figures 6 and 7 show an example of the configuration of the container lashing device 140. Figure 6 shows the container lashing device 140 in an unlocked state, and Figure 7 shows the container lashing device 140 in a locked state.

[0027] The container lashing device 140 of this embodiment is equipped with a jump-up prevention piece 141 and a lock sensor 142. The jump-up prevention piece 141 is a member that engages with and disengages from the engaging member Ce of the container C loaded on the container loading / unloading vehicle 100, and in this embodiment is configured in an L-shape with a claw 141b and a post 141c that supports the claw 141b. In this embodiment, the post 141c is fixed to the chassis 110 (subframe 112) by welding or the like. The claw 141b is supported on the upper part of the post 141c with its tip extending horizontally rearward. The lock sensor 142 is configured by a proximity sensor or a limit switch, and is fixed to the post 141c of the jump-up prevention piece 141. A bracket 143 is fixed to the post 141c of the jump-up prevention piece 141, and an L-shaped swinging member 145 is rotatably connected to the bracket 143 via a rotation shaft 144.

[0028] For example, when a container C is loaded onto the chassis 110, it is pulled by the arm 121 and slides forward on the pad 160 on the chassis 110, and as can be seen from FIGS. 6 and 7, the engaging member Ce provided at the bottom of the container C covers the claw 141b of the anti-jump piece 141. In this way, the claw 141b is inserted into the engaging member Ce, thereby preventing the container C from jumping up from the chassis 110 while traveling, etc. In addition, when the engaging member Ce covers the claw 141b, it pushes the swinging member 145. This causes the swinging member 145 to rotate, and a part of the swinging member 145 interferes with the detection area of ​​the lock sensor 142. As a result, the swinging member 145 is detected by the lock sensor 142, and it is detected that the engaging member Ce of the container C is in a state of being fastened by the container lashing device 140.

[0029] ·jack The jack 150 is a support device that prevents the rear of the chassis 110 from sinking when the container C is loaded or unloaded by the cargo handling device 120 or when the container C is dumped up. Figures 8 and 9 show an example of the configuration of the jack 150. Figure 8 is a view of the jack 150 as seen from the rear, and Figure 9 is a side view showing the interaction between the jack 150 and the drawbar 5 of the trailer 200 approaching the container loading / unloading vehicle 100.

[0030] 8 and 9 is a device for preventing the rear of the chassis 110 from sinking, and is disposed below the rear of the chassis 110. The jack 150 is a roller jack that includes an arm 151 and a roller 152 and that contacts the ground with the roller 152 when the chassis 110 sinks, but may also be a general jack that does not have a roller on the contact part.

[0031] The arm 151 is rotatably supported on a bracket 154 via a shaft 153. The bracket 154 is a support structure appropriately connected to the rear of the chassis 110 (subframe 112). The shaft 153 connecting the bracket 154 and the arm 151 is located below the chassis 110 (subframe 112). The roller 152 is a cylindrical member extending in the left and right directions, and is rotatably supported at the tip of the arm 151 via a shaft 155 extending in the left and right directions. In this embodiment, the length of the roller 152, i.e., the dimension in the vehicle width direction, is longer than the diameter of the roller 152 but smaller than the width W1 of the subframe 112 in the vehicle width direction.

[0032] The jack 150 is equipped with a hydraulic cylinder, and is configured to rotate the arm 151 using the hydraulic cylinder 158 (shown by a two-dot chain line in FIG. 8). The hydraulic cylinder 158 connects a reinforcing rib 156 provided on the bracket 154 to a member 157 connecting the left and right arms 151, thereby rotating the arm 151 relative to the chassis 110. The arm 151 can be displaced between a working position (shown by a solid line in FIG. 9) in which it extends downward, and a storage position (shown by a two-dot chain line in FIG. 9) in which it extends forward (horizontally in this embodiment). In the storage position, the arm 151 may extend rearward. With the arm 151 in the storage position, the legal departure angle of the container loading / unloading vehicle 100 is ensured. The jack 150 is positioned rearward within a range in which the legal departure angle is ensured. By displacing the arm 151 into the working position, the roller 152 moves to a position where it is in contact with the ground or is slightly (for example, about a few centimeters) away from the ground. For example, when loading a container C onto the chassis 110, if the rear of the chassis 110 is pushed down by the container C leaning against it, the jack 150 will come into contact with the ground at the roller 152. The jack 150 braces itself between the chassis 110 and the ground, preventing the rear of the chassis 110 from sinking when the container C is loaded or unloaded.

[0033] In this embodiment, the shaft 153 that is the rotation center of the arm 151 is located forward of the shaft 124 (FIG. 5) of the dump arm, and the roller 152 is configured to be located forward of the shaft 124 even in the working posture. However, the shaft 153 is located rearward of the axle of the rear wheels (rearmost wheels) of the container loading / unloading vehicle 100. If emphasis is simply placed on the stability of the vehicle body during dumping, it is preferable that the roller 152 be in contact with the ground rearward of the shaft 124, but in this embodiment, the jack 150 is placed in the position shown in FIGS. 5 and 9 in order to ensure a certain level of stability of the vehicle body during dumping and to ensure space for attaching a rear bumper and a departure angle.

[0034] In this embodiment, as shown in FIG. 8 , two jacks 150 having the above configuration are provided. One is provided on the left side of the chassis 110, and the other is provided on the right side. These left and right jacks 150 are arranged on both the left and right sides of the chassis 110 with a gap between them. The gap W2 between the left and right jacks 150, specifically the distance between the opposing end faces of the left and right rollers 152, is greater than the width of the arm 121 of the loading device 120 in the vehicle width direction and is also greater than the width W3 of the draw bar 5 of the trailer 200 in the vehicle width direction. Although not shown, the draw bar 5 has a narrower width in the vehicle width direction at its tip (the portion connected to the tractor, specifically the front portion 32) than at its base portion 31 (the portion connected to the chassis 4 of the trailer 200) to ensure a lateral swing angle relative to the tractor to which it is connected. The width W3 is the width of the tip of the front portion 32 of the draw bar 5. In this embodiment, the interval W2 is narrower than the maximum width of the drawbar 5 (for example, the width of the connecting portion of the base 31 with the chassis 4 in the vehicle width direction).

[0035] 8, the center position of the left roller 152 in the vehicle width direction is located below the left end of the subframe 112, and overlaps with the left end of the subframe 112 in the vehicle width direction. Similarly, the center position of the right roller 152 in the vehicle width direction is located below the right end of the subframe 112, and overlaps with the right end of the subframe 112 in the vehicle width direction. In other words, the left jack 150 is disposed at a position intersecting with a vertical plane passing through the left end of the subframe 112, and the right jack 150 is disposed at a position intersecting with a vertical plane passing through the right end of the subframe 112. Therefore, the distance W2 between the left and right jacks 150 is smaller than the width W1 of the subframe 112 in the vehicle width direction. Furthermore, the distance W2 between the left and right jacks 150 is smaller than the width of the chassis frame 111 in the vehicle width direction.

[0036] -Trailer- Figure 10 is a perspective view of the deck of the trailer 200. As shown in Figures 10, 9, etc., the trailer 200 is equipped with a chassis 4 having front wheels 2 and rear wheels 3 and for loading a container C, and a drawbar 5 provided at the front of the chassis 4 and connected to the container loading / unloading vehicle 100. One container C can be loaded onto the trailer 200 from the front.

[0037] The chassis 4 includes a trailer frame 6, a running surface 7, support rollers 8, and roller pits 9. The trailer frame 6, running surface 7, support rollers 8, and roller pits 9 are provided in pairs on the left and right sides.

[0038] The left and right trailer frames 6 are, for example, rod-shaped members made of high-strength steel material with an I-shaped cross section and extending in the front-to-rear direction. The left and right trailer frames 6 are connected by multiple cross members 6a arranged at intervals in the front-to-rear direction.

[0039] A turning mechanism 10, which is called a turntable, dolly, or the like, that can rotate freely around a vertical axis of rotation, is provided on the underside of the front of the trailer frame 6. The front wheels 2 are connected to the bottom of this turning mechanism 10 via a suspension, and the front wheels 2 can swing left and right in the horizontal direction relative to the trailer frame 6. The rear wheels 3 are also connected to the underside of the rear of the trailer frame 6 via a suspension. The orientation of the rear wheels 3 relative to the trailer frame 6 is constant. In this embodiment, of the front wheels 2 and rear wheels 3, only the front wheels 2 swing left and right, but this can be changed as appropriate depending on the vehicle class, etc.

[0040] A deck 15 extending in the front-to-rear direction is supported on the upper part of each of the left and right trailer frames 6. The thickness of the deck 15 varies depending on the position in the front-to-rear direction. Specifically, the lower surface of the deck 15 is flush, while the height of the upper surface varies depending on the position in the front-to-rear direction. The front part 16 of the deck 15 is thinner in the up-down direction than the main body part 17 located further behind it, and the upper surface of the front part 16 is lower in height than the upper surface of the main body part 17.

[0041] The upper surface of the main body 17 of the deck 15 is the running surface 7. This running surface 7 forms the road surface on which the rear rollers Cr of the container C run when loading and unloading the container C. The running surface 7 also has a slope 7a at its front end that slopes downward toward the front. This slope 7a is connected to the upper surface of the front part 16 of the deck 15. The slope 7a is located rearward of the claws 23j of the container lock 23 (described later), and at least a portion of the slope 7a is located rearward of the leading edge of the front wheel 2. In this embodiment, the entire slope 7a is located rearward of the leading edge of the front wheel 2, and most of the slope 7a (more than half) is located rearward of the rotation center of the front wheel 2. The running surface 7 also has a slope 7b at its rear end that slopes downward toward the roller pit 9. The slopes 7a and 7b are gentle slopes with an inclination angle (the angle formed with respect to the running surface 7 excluding the slopes 7a and 7b) of 45 degrees or less (for example, about 10 degrees). The traveling surface 7 excluding the slopes 7a and 7b is horizontal when the trailer 200 is placed on level ground. Rear roller guides 7c that guide the rear rollers Cr of the container C traveling on the traveling surface 7 are provided to protrude upward from the inner lateral edges of the left and right traveling surfaces 7.

[0042] The left and right support rollers 8 are rollers that support the main girders Cg of the container C loaded on the trailer 200. These support rollers 8 are arranged between the left and right running surfaces 7 so that their rotation axes (rotation center lines) are located forward of the leading edges of the roller pits 9. In this embodiment, all of the support rollers 8 are located forward of the leading edges of the roller pits 9, and all or some (some in this embodiment) of the support rollers 8 are located forward of the rear edges of the rear wheels 3.

[0043] The roller pit 9 is a space (for example, a hole or depression) into which the rear rollers Cr of the container C fall after traveling over the traveling surface 7, and is adjacent to the rear end of the traveling surface 7, i.e., the rear side of the rear end of the slope 7b. A roller stopper 21 that acts as a stopper for the rear rollers Cr of the container C is provided on the rear side of the roller pit 9. The roller stopper 21 is provided on the front side of the cross member 19 that connects the rear ends of the left and right trailer frames 6.

[0044] The left and right running surfaces 7 are provided on their inner lateral edges with left and right seats 18, one at the front and one at the back, on which the main girders Cg of the container C sit. The left seat 18 and the left support roller 8 are positioned on the same straight line extending parallel to the running surfaces 7. Similarly, the right seat 18 and the right support roller 8 are positioned on the same straight line extending parallel to the running surfaces 7.

[0045] Further, a container lashing device 40 for lashing down a container C is attached to the cross member 6a. In this embodiment, a pair of container lashing devices 40 (two in total) are provided, one on each side. Further, a container lock 23 that is operated by air pressure, for example, is provided between the front portions 16 of the left and right decks 15. The detailed configurations of the container lock 23 and the container lashing devices 40 will be described later.

[0046] Additionally, the trailer 200 may be provided with a movable front stopper 22 that holds down the front of the loaded container C. The front stopper 22 is supported so as to be rotatable up and down relative to a cross member that connects the front ends of the left and right trailer frames 6, and can be displaced to an unlocked position where it is tilted forward, and to a locked position where it is raised upward. Figure 10 shows the front stopper 22 in the locked position.

[0047] -Drawbar- The drawbar 5 (FIG. 9) is a connecting member that is connected to the connecting portion at the rear of a tractor such as the container loader / loader vehicle 100 in order to connect the trailer 200 to the tractor. For example, as shown in FIG. 9, the drawbar 5 has a base portion 31 that is connected to the chassis 4 (e.g., the trailer frame 6) so as to be able to swing up and down, and a front portion 32 that is connected to the base portion 31 so as to be able to swing up and down. When this drawbar 5 is connected to the container loader / loader vehicle 100, the base portion 31 and the front portion 32 extend forward, and the front portion 32 is positioned at approximately the same height as the chassis 110 of the container loader / loader vehicle 100, thereby ensuring sufficient length in the front and rear directions. On the other hand, when transferring a container C between the container loader / loader vehicle 100 and the trailer 200, the base portion 31 faces downward, and the front portion 32 is bent forward from the tip of the base portion 31, as shown in FIG. 9, and the front portion 32 is lowered to near the ground.

[0048] -Container Lock- Fig. 11 is a plan view of the container lock 23 described above, Fig. 12 is a front view of the container lock 23 as seen from the front (the lower side in Fig. 11), and Fig. 13 is a cross-sectional view taken along line AA in Fig. 11. The left-right direction in Figs. 11 to 13 corresponds to the left-right direction of the trailer 200, the container detachable vehicle 100, and the container C, and corresponds to the direction perpendicular to the plane of the paper in Fig. 1. In Figs. 11 to 13, the container lock 23 is shown in perspective through its exterior cover 23x (Fig. 10).

[0049] The container lock 23 is located between the front parts 16 of the left and right decks 15 of the chassis 4, and regulates the vertical movement of the container C. The container lock 23 includes a base 23a, a cylinder 23b, a bell crank 23c, a first shaft 23d, a bell crank 23e, an arm 23f, a bell crank 23g, a second shaft 23h, a link 23i, and a claw 23j.

[0050] The base 23a is supported by a cross member 6a located at the front of the trailer 200. The cylinder 23b is a pneumatic cylinder that extends left and right, and one end of the cylinder 23b is connected to the base 23a via a bracket 23k so as to be rotatable up and down. A hydraulic cylinder may also be used for the cylinder 23b. The other end of the cylinder 23b is connected via a bell crank 23c to a first shaft 23d that is rotatably supported on the base 23a. The extension and contraction of the cylinder 23b causes the first shaft 23d to rotate.

[0051] Furthermore, arm 23f, also called a "snake neck," which is partially U-shaped, is connected to first shaft 23d via bell crank 23e. The tip of bell crank 23e is rotatably connected to one end of arm 23f via pin 23l. Arm 23f extends left and right (in a direction perpendicular to first shaft 23d) and straddles first shaft 23d at its U-shaped portion. The other end of arm 23f is connected via bell crank 23g to second shaft 23h, which is rotatably supported on base 23a. Arm 23f and bell crank 23g are rotatably connected via pin 23m. Left and right claws 23j, which are rotatably connected to base 23a left and right, are connected to second shaft 23h via left and right links 23i, respectively.

[0052] With this configuration, when the cylinder 23b extends and the first shaft 23d rotates in one direction (the direction of arrow R1 in FIG. 13), the rotation of the first shaft 23d is transmitted to the second shaft 23h via the bell crank 23e and the arm 23f, causing the second shaft 23h to rotate in one direction (the direction opposite to the arrow R2 in FIG. 13). Furthermore, the rotation of the second shaft 23h is transmitted to the left and right claws 23j via the left and right links 23i, causing the left and right claws 23j to rotate outward in the left and right directions (the vehicle width direction), respectively, and protrude outward from the exterior cover (FIG. 10) (resulting in the states shown in FIGS. 10 to 13). The protruding claws 23j on the left and right engage with claw holes (not shown) provided on the opposing side surfaces of the left and right main girders Cg of the container C loaded on the trailer 200, restricting the up-down, front-back, and left-right movement of the container C.

[0053] Conversely, when the cylinder 23b contracts and the first shaft 23d rotates in the other direction (the direction opposite to the arrow R1 in FIG. 13), the rotation of the first shaft 23d is transmitted to the second shaft 23h via the bell crank 23e and the arm 23f, causing the second shaft 23h to rotate in the other direction (arrow R2 in FIG. 13). Furthermore, the rotation of the second shaft 23h is transmitted to the left and right claws 23j via the left and right links 23i, causing the left and right claws 23j to rotate inward in the left and right directions (vehicle width directions) from the states shown in FIGS. 10 to 13, and the left and right claws 23j are retracted into the exterior cover 23x (FIG. 10). When the left and right claws 23j are retracted with a container C loaded on the trailer 200, the left and right claws 23j disengage from the claw holes (not shown) in the left and right main girders Cg of the container C, and the container C is released from restraint by the container lock 23.

[0054] In this state, when the claws 23j protrude to the left and right, as shown in FIG. 13, a plane S passing through the center lines of the pins 23l and 23m at both ends of the arm 23f is located below the center of the first shaft 23d. Therefore, the force transmitted from the second shaft 23h rotating in the direction of arrow R2 to the first shaft 23d is converted into a force that rotates the first shaft 23d in the direction of arrow R1. As described above, in order for the second shaft 23h to rotate in the direction of arrow R2, the first shaft 23d must structurally rotate in the opposite direction to the direction of arrow R1. Therefore, the rotational force of the first shaft 23d in the direction of arrow R1 resists the force that rotates the second shaft 23h in the direction of arrow R2. As a result, even if an upward external force F ( FIG. 13 ) acts on the claws 23j from the container C, for example, the rotation of the second shaft 23h in the direction of arrow R2 is restricted, preventing the claws 23j from tipping inward and detaching from the container C.

[0055] -Container securing device- Fig. 14 is a perspective view of the container lashing device 40, and Fig. 15 is an explanatory diagram of the operation of the container lashing device 40. Figs. 14 and 15 show the left-side container lashing device 40, but the right-side container lashing device 40 may have a symmetrical configuration or the same configuration as the left-side container lashing device 40.

[0056] The container lashing device 40 is a member that restricts the up-down and left-right movement of the container C loaded on the trailer 200, and is equipped with a support 41, a rod 42, a jump prevention piece (locking member) 43, a cylinder 44, and a guide 45. The container C that is loaded onto the container loader / detacher vehicle 100 from the front side (the engaging portion Cb side) does not have a hole on the back side through which the jump prevention piece is inserted, but instead is equipped with an engaging member Ce that receives from the front a rear-facing claw 141b of the jump prevention piece 141 provided on the container loader / detacher vehicle 100, as shown in Figure 7. The container lashing device 40 of the trailer 200 engages with this engaging member Ce of the container C.

[0057] The support 41 is attached to the trailer 200, which is a base for loading the container C. Specifically, the support 41 is fixed to a cross member 6a located near the center of the trailer 200 in the fore-and-aft direction, for example. In this embodiment, a cylindrical member is used for the support 41. Two cylindrical supports 41 are arranged in the front and rear direction, each fixed to two cross members 6a arranged in the front and rear, and the rod 42 is inserted into these supports 41 and supported so as to be slidable in the direction in which the container C is loaded (the loading and unloading direction, i.e., the fore-and-aft direction). A stopper 41a is attached to the cross member 6a to which the front support 41 is attached, separately from the front support 41. The front support 41 and the stopper 41a may be attached to different cross members 6a. The stopper 41a has a hook 41b that engages with the protrusion 43d of the anti-jump piece 43.

[0058] The anti-jumping piece 43 is a locking member that engages with and disengages from the engaging member Ce of the container C loaded on the trailer 200 and is supported on the rod 42 via a rotating shaft 43a. In this embodiment, the anti-jumping piece 43 is configured in an L-shape with a claw 43b and a post 43c that supports the claw 43b. In this embodiment, the anti-jumping piece 43 is illustrated as a locking member, but the shape of the locking member can be modified as needed, for example, into a rod shape or a block shape depending on the shape of the engaging member Ce. The rotating shaft 43a supports the lower part of the post 43c, and the claw 43b is supported by the upper part of the post 43c. When the anti-jumping piece 43 assumes an upright position with the post 43c raised, the claw 43b rises in an arc orbit centered on the rotating shaft 43a and displaces to the locked position, and then displaces to a horizontal position with its tip facing forward as shown in FIG. 15. When the jump-up prevention piece 43 assumes a lying-down position with the post 43c tilted down, the claw 43b descends in an arcuate path centered on the rotation axis 43a, displacing to the release position and displacing to an inclined position with the tip pointing downward as shown in Figure 14. When in the locked position, the jump-up prevention piece 43 is inserted into and engages with the engaging member Ce of the container C loaded onto the chassis 4 from the front, restricting the up, down, left, and right movement of the loaded container C. In addition, the jump-up prevention piece 43 is biased in the upright direction by a spring (for example, a torsion spring) not shown, and is subjected to a force that tends to displace it to the locked position.

[0059] One end of the cylinder 44 is supported via a bracket 44a on a cross member 6a different from the cross member 6a that supports the support 41, and the other end is connected to the rod 42. As a result, when the cylinder 44 extends and retracts, the rod 42 and the anti-jump piece 43 attached thereto slide back and forth while being guided by the support 41. The cylinder 44 can be a hydraulic cylinder, but in this embodiment it is a pneumatic cylinder.

[0060] The guide 45 is a member that abuts against the anti-jumping piece 43 that slides together with the rod 42 to rotate the anti-jumping piece 43, and is fixed to, for example, the cross member 6a. In this embodiment, the guide 45 is provided with a pressure roller 45a, and a configuration is adopted in which the pressure roller 45a presses down the anti-jumping piece 43. In the state shown in FIG. 14 (when the cylinder 44 is contracted), the anti-jumping piece 43 is biased by a spring in a direction in which the post 43c stands up, and the pressure roller 45a of the guide 45 presses down the post 43c in a lying position. When the cylinder 44 is extended as shown by the straight arrow in FIG. 15 and the anti-jumping piece 43 moves toward the engaging member Ce of the container C loaded on the trailer 200 (i.e., moves forward), the anti-jumping piece 43 is released from the guide 45 (disengages from the guide 45) and stands up as shown by the arc arrow (displaced to the locked position). When the protrusion 43d of the anti-jumping piece 43 engages with the hook 41b of the stopper 41a and restricts rotation, the post 43c is locked in an upright position, and the claw 43b is firmly inserted from behind into the engaging member Ce of the container C loaded on the trailer 200.

[0061] In this embodiment, the anti-jumping piece 43 is configured to stand up by a spring, but it may also be configured to stand up by its own weight by setting the position of the center of gravity relative to the rotation shaft 43a. In this case, as with the above, the anti-jumping piece 43 stands up when the cylinder 44 extends and is released from the guide 45. Conversely, the anti-jumping piece 43 may also be configured to fall forward, for example, by a spring or by its own weight. For example, a guide member (roller, etc.) that abuts against the anti-jumping piece 43 as it moves may be provided, so that when the cylinder 44 extends, the anti-jumping piece 43 hits the guide member and stands up, and when the cylinder 44 retracts, the anti-jumping piece 43 is freed and falls down.

[0062] The container securing device 40 is configured in such a way that the combination of the translational movement associated with the sliding of the rod 42 and the rotational movement around the rotation axis 43a causes the anti-jump piece 43 to move translationally toward the engaging member Ce of the container C, rise up, and engage with the engaging member Ce.

[0063] -Procedure for loading containers onto trailers- 16 to 21 are diagrams showing the process of transferring a container C from the container detachable vehicle 100 to the trailer 200. As an example, the procedure for loading a container C by the container detachable vehicle 100 onto an empty trailer 200 that has been towed by a tractor to a loading work site will be described with reference to Fig. 1 and Figs. 16 to 21.

[0064] When loading a container C onto the trailer 200, the drawbar 5 of the trailer 200 is bent into an L shape as shown in Fig. 1, the container loader / detacher vehicle 100 loaded with the container C is brought close to the front of the trailer 200, and the container loader / detacher vehicle 100 and the trailer 200 are lined up in tandem facing in the same direction. In this state, the rear of the container loader / detacher vehicle 100 and the front of the trailer 200 face each other.

[0065] After arranging the container loading / unloading vehicle 100 and the trailer 200 in tandem as shown in Figure 1, it is confirmed that the anti-jumping piece 43 of the container securing device 40 of the trailer 200 is in the release position, and if the anti-jumping piece 43 is in the lock position, the cylinder 44 is retracted to displace the anti-jumping piece 43 to the release position. Also, the jack 150 is lowered. Then, as shown in Figure 16, the arm 121 of the loading / unloading device 120 pushes the container C rearward. The container C slides rearward on the container loading / unloading vehicle 100, guided by the guide rollers 130 along the main girder Cg.

[0066] After sliding the container C rearward, the arm 121 (loading / unloading arm 123) of the cargo handling device 120 is rotated rearward as shown in Figure 17, causing the container C to come into contact with the trailer 200. The container C moves rearward with its front part lifted, using the guide roller 130 as a fulcrum, and first makes contact with the running surface 7 of the trailer 200 with its rear roller Cr. At this time, the rear roller Cr of the container C lands on the slope 7a on the front side of the running surface 7 as the arm 121 starts to rotate (Figure 17).

[0067] Thereafter, when the arm 121 of the cargo handling device 120 swings further rearward, the rear rollers Cr of the container C travel on the travel surface 7 of the trailer 200 and move rearward as shown in FIG.

[0068] When the rear rollers Cr of the container C travel to the rear end on the running surface 7, they drop into the roller pit 9 (Fig. 10) as shown in Fig. 19, and at the same time, the main girders Cg of the container C are supported by the support rollers 8 of the trailer 200. The support point at the rear of the container C is changed from the rear rollers Cr to the support rollers 8, and even when the rear rollers Cr pass the running surface 7, the support point at the rear of the container C remains within the range of the running surface 7.

[0069] Then, the container C finally reaches a state where the main girders Cg are seated on the seat portions 18 (Fig. 20). Once the main girders Cg of the container C are seated on the seat portions 18, the cylinders 44 of the container securing devices 40 are extended and the anti-jump pieces 43 are inserted into the engaging members Ce of the container C, restricting the up-down, down-down, front-back, left-right movement of the container C (Fig. 21). Furthermore, by fixing the front of the container C with the claws 23j of the container locks 23, the up-down, front-back, left-right movement of the container C relative to the trailer 200 is restricted. In addition, the front stopper 22 is raised (Fig. 21), restraining the front of the container C and further firmly restricting the fore-and-aft movement of the container C.

[0070] Once the container C has been transferred onto the trailer 200 in this manner, the arm 121 is released from the container C, and the container loading / unloading vehicle 100 is moved forward.

[0071] When connecting a trailer to the container loader / unloader vehicle 100 or another container loader / unloader vehicle 100, the drawbar 5 is returned to a position in which it extends straight forward, and the drawbar 5 is connected to the container loader / unloader vehicle 100.

[0072] The procedure for unloading the container C from the trailer 200 is generally the reverse of the above procedure.

[0073] -effect- (1) In this embodiment, the left and right jacks 150 of the container detachable vehicle 100 are arranged at an interval from each other on both the left and right sides at the rear of the chassis 110. Therefore, the front portion 32 of the drawbar 5 of the trailer 200 can be received in the space between the left and right jacks 150. Therefore, the drawbar 5 can be received in the space below the chassis of the container detachable vehicle 100, allowing the container detachable vehicle 100 to approach the front of the trailer 200. This allows the container C to be loaded onto the trailer 200 from the front, thereby reducing the time and effort required for the work of transferring the container C between the container detachable vehicle 100 and the trailer 200.

[0074] Furthermore, since the jacks 150 are arranged on the left and right sides of the chassis 110, it is possible to suppress lateral shaking of the container loading / unloading vehicle 100 even when loading / unloading a container C whose load weight is significantly unbalanced to the left or right between the vehicle and the ground. Since the shaking of the container loading / unloading vehicle 100 when loading / unloading a container C is suppressed, it is also possible to reduce the psychological burden on the user.

[0075] As described above, according to this embodiment, when loading and unloading the container C, the stability of the body of the container loading and unloading vehicle 100 in the left-right direction can be improved, and the space under the chassis can be effectively utilized.

[0076] (2) The left jack 150 is disposed at a position intersecting a vertical plane (an extension of the left side surface) passing through the left end of the subframe 112 of the chassis 110, and the right jack 150 is disposed at a position intersecting a vertical plane (an extension of the right side surface) passing through the right end of the subframe 112 of the chassis 110. If the distance between the left and right jacks 150 is narrow and the left and right rollers 152 are distributed closer to the center in the vehicle width direction, the left and right rollers 152 may touch the ground at the center in the vehicle width direction when loading or unloading a container C or when discharging a dump truck, causing the vehicle body to tilt left or right and become unstable. In this embodiment, by spreading the left and right jacks 150 to approximately the width of the subframe 112, it is possible to prevent the vehicle body from becoming unstable. Furthermore, because the jack 150 touches the ground directly below the subframe 112, the load from the subframe 112 acts on the jack 150 from directly above, which is advantageous in terms of strength.

[0077] (3) Regarding the jack 150, if the arm 151 supporting the roller 152 were directly connected to the chassis frame 111 without the bracket 154, the roller 152 would interfere with the subframe 112, making it impossible to store the arm 151 horizontally.

[0078] In contrast, in this embodiment, the jack 150 has an arm 151 that rotatably supports a roller 152 that comes into contact with the ground, and is rotatably supported on the chassis 110 via a bracket 154, and a shaft 153 that connects the bracket 154 and the arm 151 is located below the chassis 110 (subframe 112). By locating the rotation fulcrum (shaft 153) of the arm 151 below the subframe 112 via the bracket 154 in this way, the arm 151 can be stored horizontally, and downward protrusion of the jack 150 during storage can be reduced.

[0079] For example, when dumping and discharging cargo (e.g., earth and sand) from a container C by tilting up the dump arm around the shaft 124 (FIG. 5) as a fulcrum, most of the cargo may first be discharged with the jack 150 extended, and then the jack 150 may be retracted to discharge the remaining cargo from the container C, and the container loading / unloading vehicle 100 may be moved forward a short distance with the container C in an upright position. During this operation, some of the discharged earth and sand may wrap around the front side of the jack 150, and if the distance between the jack 150 in the retracted position and the ground is insufficient, the jack 150 is likely to interfere with the cargo on the ground when the vehicle body moves forward; however, in this embodiment, the downward protrusion of the jack 150 when retracted is suppressed as described above, so interference between the jack 150 and the cargo on the ground can be suppressed.

[0080] Furthermore, in this embodiment, when discharging, for example, earth and sand loaded in the container C, there is a space between the left and right rollers 152, so the left and right rollers 152 are unlikely to interfere with the earth and sand X that is discharged from the container C and flows forward, as shown by the two-dot chain lines in FIGS. 2 and 5. Since the earth and sand X is unlikely to wrap around in front of the left and right rollers 152, the operation of moving the container loading / unloading vehicle 100 forward while tilting the container C to discharge the earth and sand remaining in the container C can also be performed with the rollers 152 extended, as described above. In such a situation, the left and right rollers 152 can stabilize the vehicle body not only when dumping by tilting up the container C but also when dumping by moving the container loading / unloading vehicle 100 forward.

[0081] (4) Furthermore, the shaft 153 around which the arm 151 of the jack 150 rotates is located forward of the shaft 124 (FIG. 5) of the dump arm, and the roller 152 is located forward of the shaft 124 even in the working position. By thus locating the rotation center of the arm 151 forward of the dump hinge and ensuring a distance between the position where the jack 150 touches the ground and the rear end of the chassis 110, it is possible to reduce the amount of insertion of the drawbar 5 between the left and right jacks 150 when transferring a container C between the container loading / unloading vehicle 100 and the trailer 200. Therefore, the container loading / unloading vehicle 100 can be brought closer to the trailer 200 without being affected by the roller 152.

[0082] The drawbar 5 of the trailer 200 is formed so that the front portion 32 is narrower than the base portion 31 in order to ensure the turning angle of the trailer 200 relative to the tractor when turning (for example, when turning right or left). As described above, when bringing the container loading / unloading vehicle 100 close to the front of the trailer 200, it is not necessary to insert the drawbar 5 deeply between the left and right jacks 150, and the distance W2 between the left and right jacks 150 is sufficient to avoid interference with the narrow portion (front portion 32) of the drawbar 5. For example, if the position of the outer end of the rollers 152 in the vehicle width direction is restricted, the width of the rollers 152 can be extended toward the center in the vehicle width direction by the amount that the distance W2 between the jacks 150 can be reduced. The increased installation area of ​​the rollers 152 improves the stability of the vehicle body when loading and unloading containers C or when dumping.

[0083] Second Embodiment Figure 22 is a rear view of the jack 150 provided on the container loading / unloading vehicle 100 according to the second embodiment of the present invention. Figure 22 corresponds to Figure 8. In Figure 22, elements that are the same as or correspond to those in the first embodiment are given the same reference numerals as those in the previously mentioned drawings, and their description will be omitted.

[0084] The container detachable vehicle 100 according to this embodiment differs from the container detachable vehicle 100 according to the first embodiment in that the left and right jacks 150 are disposed outward in the vehicle width direction from the chassis 110 (subframe 112), and the interval W2 between the left and right jacks 150 is wider than in the first embodiment. Specifically, the rollers 152 of the left jack 150 are all disposed to the left of the left end of the chassis 110 (subframe 112), and the rollers 152 of the right jack 150 are all disposed to the right of the right end of the chassis 110 (subframe 112). The bracket 154 and the member 157 connecting the left and right jacks 150 are also extended in the vehicle width direction compared to the first embodiment by the amount of the wider interval W2. However, it is assumed that both the left and right jacks 150 fit within the legal maximum vehicle width.

[0085] Other configurations of this embodiment are the same as those of the first embodiment, and the same basic effects as those of the first embodiment can be obtained in this embodiment as well.

[0086] Additionally, in this embodiment, the increased distance W2 between the left and right jacks 150 can further improve the vehicle body stability of the container loading / unloading vehicle 100 during loading / unloading operations and dumping operations of the container C. When the container loading / unloading vehicle 100 is large, the distance in the front-to-rear direction from the rear wheel axle to the dump hinge (shaft 124) is long, and the subframe 112 is likely to deform between the rear wheel axle and the dump hinge, which may result in significant lateral swaying of the vehicle body due to twisting of the subframe 112 during dumping operations, for example. In this embodiment, the wide distance W2 between the left and right jacks 150 is advantageous in such cases.

[0087] In addition, when transferring a container C between the container loading / unloading vehicle 100 and the trailer 200, when the container loading / unloading vehicle 100 is brought close to the front of the trailer 200, interference between the drawbar 5 and the jack 150 can be avoided with ease.

[0088] Third Embodiment FIG. 23 is a view of a rear wheel suspension provided on a container loading / unloading vehicle 100 according to a third embodiment of the present invention, viewed from the vehicle width direction.

[0089] The container detachable vehicle 100 according to this embodiment differs from the container detachable vehicle 100 according to the first embodiment in that the rear wheel suspension 170 is provided with restraining mechanisms 180 as left and right support devices that prevent the chassis 110 from sinking when the container C is loaded or unloaded by the cargo handling equipment 120 or when the container C is dumped. The suspension 170 is a leaf suspension that elastically supports the rear wheel axle 190 relative to the chassis 110 with a plurality of leaves (leaf springs) of varying heights. The restraining mechanism 180 is, for example, a hydraulic cylinder, and is supported by, for example, the chassis 110 with the rod separated from the leaves as shown by the solid line in FIG. 23 when the container detachable vehicle 100 is traveling. The restraining mechanism 180 is, for example, located above the suspension 170. 23, the hydraulic cylinder is extended from the state shown by the solid line and the tip of the rod is pressed against the leaf as shown by the dashed line, thereby restraining the suspension 170 and preventing the chassis 110 from sinking when, for example, a large downward force is applied to the chassis 110. The suspension 170 and restraining mechanism 180 are provided corresponding to each of the left and right rear wheels. Therefore, the left and right restraining mechanisms 180 are also arranged on both the left and right sides of the chassis 110 at a distance from each other, similar to the jack 150 in the first and second embodiments.

[0090] Other configurations of this embodiment are the same as those of Embodiment 1. The restraining mechanism 180 may be provided on the container detachable vehicle 100 in place of the jack 150, or may be provided together with the jack 150.

[0091] The restraining mechanism 180 does not interfere with the drawbar 5 of the trailer 200, and in this embodiment, as in the first embodiment, the drawbar 5 can be received in the space under the chassis of the container loader / loader vehicle 100, allowing the container loader / loader vehicle 100 to approach the front of the trailer 200. This allows the container C to be loaded onto the trailer 200 from the front, reducing the time and effort required for transferring the container C between the container loader / loader vehicle 100 and the trailer 200.

[0092] Furthermore, since the left and right restraining mechanisms 180 can restrain the left and right suspensions 170, respectively, it is possible to suppress left and right swaying of the container attaching and detaching vehicle 100 even when loading and unloading a container C with a load weight that is significantly unbalanced to the left and right between the container C and the ground. Since the swaying of the container attaching and detaching vehicle 100 when loading and unloading the container C is suppressed, it is also possible to reduce the psychological burden on the user.

[0093] In this way, also in this embodiment, when loading and unloading the container C, the stability of the body of the container loading and unloading vehicle 100 in the left-right direction can be improved, and the space under the chassis can be effectively utilized.

[0094] In this embodiment, a leaf suspension has been described as an example of the suspension 170, but other types of suspension such as an air suspension may also be used. The restraining mechanism 180 need only be a mechanism that suppresses the expansion and contraction of such a suspension, and need not be configured to directly contact the suspension, but may be configured to tension the chassis 110 and the rear wheel axle 190 so as to prevent the distance between them from shortening. If the suspension 170 is of a type that uses fluid, such as an air suspension, a mechanism (such as a pump) that eliminates or weakens the cushioning effect by increasing the pressure of the internal fluid or by removing the fluid may also be used as the restraining mechanism 180. [Explanation of symbols]

[0095] 100...container detaching vehicle, 110...chassis, 120...loading device, 121...arm, 150...jack (support device), 151...arm, 152...roller, 154...bracket, 170...suspension, 180...restraint mechanism (support device), C...container

Claims

1. A container loading / unloading vehicle capable of towing a trailer connected by a connecting member attached to the front of the trailer in the direction of travel, and equipped with a loading / unloading device for loading and unloading containers from the front of the trailer, a jack device used during the loading and unloading, the jack device having a rotating shaft provided at a position a predetermined distance forward from the rear end of the chassis whose longitudinal direction is the front-rear direction of the vehicle, an arm rotatably connected via the rotating shaft in a stored state in which it is stored close to the chassis or in an extended state in which it extends downward, and a support part attached to the arm and capable of touching the ground, The arm is configured to be able to change its position to extend forward around the pivot shaft when in the stored state, and to change its position to one in which the support portion contacts the ground forward from the rear end of the chassis when in the extended state. A container detachable vehicle.

2. In the container detaching vehicle described in claim 1, A container detachable vehicle characterized in that it is provided with a bumper arranged at a position offset downward from the chassis.

3. In the container detaching vehicle described in claim 2, The bumper has a stay extending downward from the rear end of the chassis, and a bumper body attached to the tip of the stay and with its longitudinal direction in the left-right direction of the vehicle, and the stay is of a fixed type that is fixed to the chassis.

4. In the container detaching vehicle described in claim 2, The bumper includes a stay extending downward from the rear end of the chassis, and a bumper body provided at a tip of the stay and having a longitudinal direction aligned with the left-right direction of the vehicle, The pivot shaft is provided at a position forward of the stay. A container detachable vehicle.

5. In the container detaching vehicle described in claim 2, The bumper includes a stay extending downward from the rear end of the chassis, and a bumper body provided at a tip of the stay and having a longitudinal direction aligned with the left-right direction of the vehicle, When loading and unloading a container from the front, the bumper body can be moved closer to the connecting member in the front-rear direction of the vehicle. A container detachable vehicle.

6. In the container detaching vehicle described in claim 1, the chassis has a chassis frame and a bracket attached to the chassis frame and supporting the arm so as to be rotatable; The pivot shaft is provided at a portion of the bracket that protrudes downward from the chassis frame. A container detachable vehicle.

7. In the container detachment vehicle described in claim 1, A container detachable vehicle characterized in that the support portions are arranged on both the left and right sides of the chassis at intervals, and are configured so that the connecting member can be inserted into the intervals.

Images