Specialized vehicles

Abstract

We offer specially equipped vehicles that are easy to climb, with a ladder located between the cab and the cargo. [Solution] The vehicle comprises a cab, a vehicle frame extending rearward from the cab, and a ladder 2. The vehicle frame has a mounting section on its upper surface on which an object is mounted, and the mounting section is located spaced rearward from the cab. The ladder is positioned between the cab and the mounting section, and the ladder extends vertically from the bottom to the top of the vehicle frame and comprises a pair of vertical members 31 arranged opposite to each other in opposing directions perpendicular to the vertical direction, and a first step 32 and a second step 42 provided on the vertical members and extending in opposing directions. Multiple first steps are provided spaced apart vertically so as to extend between the pair of vertical members, and the second step is provided below the top surface of the vehicle frame so as to extend from one of the pair of vertical members to the outside of the pair of vertical members and toward the mounting section.

Description

Technical Field

[0001] The present invention relates to a special vehicle.

Background Art

[0002] Conventionally, as a special vehicle, a cargo handling vehicle having a portable container cart described in Patent Document 1 is known. The cargo handling vehicle includes a cab, a chassis frame extending rearward of the cab, a sub-frame integrally mounted on the chassis frame, and a cargo handling device for loading and unloading a pedestal or a container between the chassis frame and the ground. Further, a ladder is provided between the cab and the cargo handling device (see FIG. 5 of Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the ladder provided between the cab and the cargo handling device as described in Patent Document 1, due to space constraints, the width in the front-rear direction of the ladder may be small. In such a case, it is difficult to put hands and feet on the ladder, so it may be difficult to climb the ladder.

[0005] Note that such a problem is not limited to a cargo handling vehicle having a portable container cart, but is a problem that occurs in all special vehicles in which a load such as a container or a mounted object is mounted behind the cab. Further, not only when the width direction of the ladder coincides with the front-rear direction, but also when the width direction of the ladder is provided so as to coincide with the vehicle width direction, the width may be reduced due to space constraints.

[0006] Therefore, an object of the present invention is to provide a special vehicle that is easy to climb using a ladder located between the cab and the load. [Means for solving the problem]

[0007] The special-purpose vehicle of the present invention comprises a cab, a vehicle frame extending rearward from the cab, and a ladder, wherein the vehicle frame has a mounting section on its upper surface on which an object is mounted, the mounting section is located spaced rearward from the cab, the ladder is positioned between the cab and the mounting section, the ladder extends vertically from below to above the vehicle frame and comprises a pair of vertical members arranged opposite to each other in opposing directions perpendicular to the vertical direction, and a first step and a second step provided on the vertical members and extending in the opposing directions, wherein a plurality of first steps are provided spaced apart in the vertical direction so as to extend between the pair of vertical members, and the second steps are provided below the upper surface of the vehicle frame so as to extend from one of the pair of vertical members to the outside of the pair of vertical members and toward the mounting section.

[0008] With this configuration, the second step extends below the upper surface of the vehicle frame in the opposite direction to the opposing direction and toward the mounted part, so that when climbing the ladder, one can place their hands or feet on the second step to climb.

[0009] Furthermore, the second step can also be configured to extend in the front-to-back direction.

[0010] With this configuration, the second step extends in the front-to-back direction, making it easier to place hands or feet on the second step from the side of the special-purpose vehicle.

[0011] Furthermore, the first step may include a lower step located below the upper surface of the vehicle body frame, and the lower step and the second step may be configured to be at approximately the same height.

[0012] With this configuration, both hands or both feet can be placed on the lower step and the second step, making it easier to climb the ladder or place your feet on it. [Effects of the Invention]

[0013] According to the present invention, a specially equipped vehicle can be obtained that is easy to climb using a ladder located between the cab and the cargo. [Brief explanation of the drawing]

[0014] [Figure 1] This is a side view showing a special-purpose vehicle according to one embodiment of the present invention. [Figure 2] This is a side view showing the ladder of the special-purpose vehicle. [Figure 3] This is a side view showing the lower end of the ladder. [Figure 4] This is a front view showing the ladder. [Figure 5] This is a front view showing the lower end of the ladder. [Modes for carrying out the invention]

[0015] A special-purpose vehicle according to one embodiment of the present invention will be described with reference to Figures 1 to 5. For the sake of explanation, the vertical and longitudinal directions will be described based on the directions shown in Figure 1, and the direction that penetrates the plane of Figure 1 will be described as the vehicle width direction.

[0016] As shown in Figure 1, the special-purpose vehicle comprises a cab 11 that forms the front end of the special-purpose vehicle, a body frame 12 extending rearward from the cab 11, a seat platform 13, and a ladder 2. The special-purpose vehicle of this embodiment is a container transport vehicle 1 for transporting containers C, and further comprises a cargo handling device 14 for loading or unloading containers C.

[0017] The cab 11 is a box-shaped body that forms the front end of the container transport vehicle 1. The cab 11 is a box-shaped body that houses the driver, and inside it are devices used for driving the container transport vehicle 1 and for operating the cargo handling equipment 14, which will be described later.

[0018] The vehicle body frame 12 includes a pair of chassis frames 121 that are arranged at intervals in the vehicle width direction and extend rearward from the cab 11, a sub-frame 122 that extends in the front-rear direction and is disposed on each of the pair of chassis frames 121, and a cross-frame (not shown) that extends in the vehicle width direction and connects the sub-frames 122 disposed on the pair of chassis frames 121. Further, the vehicle body frame 12 includes a power supply unit that supplies power for driving a cargo handling device 14 described later.

[0019] The chassis frame 121 is a rod-shaped member that extends continuously in the front-rear direction and has a predetermined thickness in the vertical direction. Further, the chassis frame 121 constitutes the lower end portion of the vehicle body frame 12, and the other members constituting the vehicle body frame 12 are disposed above the chassis frame 121.

[0020] The sub-frame 122 and the cross-frame are rod-shaped members that are disposed at positions spaced apart from the cab 11 in the vehicle width direction above the chassis frame 121. The sub-frame 122 and the cross-frame constitute a mounted portion 15 on which a load M is mounted in the vehicle body frame 12. The sub-frame 122 and the cross-frame are members that reinforce the chassis frame 121 so that the chassis frame 121 is not deformed or the like by the weight of the load M when the load M is mounted.

[0021] The mounted portion 15 is located at a position spaced rearward from the cab 11. The mounted portion 15 of the present embodiment is disposed over a range from a position in front of the center portion in the front-rear direction of the vehicle body frame 12 and spaced rearward from the cab 11 to the rear end portion of the vehicle body frame 12. Further, the mounted portion 15 of the present embodiment is disposed over a range from the rear side to the rear end portion of the sub-frame 122 and the cross-frame.

[0022] The power supply unit supplies power for driving the load M. The power supply unit of the present embodiment is a hydraulic device that extracts power from an engine, converts it into hydraulic pressure, and drives the load M by the hydraulic pressure. The power supply unit is fixed to the chassis frame 121.

[0023] The load M includes a cargo handling device 14 for loading or unloading containers C, and the containers C loaded by the cargo handling device 14. Container C is a box-shaped body that contains the goods to be transported, and is, for example, made of metal. Container C also has an engaging portion C1 at its front end that engages with the cargo handling device 14 (described later), and its rear end is configured to be openable and closable.

[0024] The cargo handling device 14 is provided at the front end of the loading section 15 and includes a cargo handling arm 16 extending upward and an arm drive unit (not shown) that receives hydraulic pressure to drive the cargo handling arm 16. The cargo handling arm 16 includes an arm body 17 extending vertically and a hook portion 18 provided at the upper end of the arm body 17. The hook portion 18 is a hook that can engage with the engagement section C1 of the container C.

[0025] The arm drive unit receives hydraulic pressure from the power supply unit to drive the loading arm 16 on the loading section 15. Specifically, the arm drive unit is equipped with multiple hydraulic cylinders, and the extension and retraction of these hydraulic cylinders moves the loading arm 16 in the forward / backward or up / down direction. In this embodiment, the loading arm 16 moves in the forward / backward direction by the drive of the arm drive unit, enabling the loading or unloading of container C. Furthermore, when the hook portion 18 engages with the engagement portion C1 of container C, the loading arm moves upward, lifting the front end of container C, dumping container C, and discharging the goods contained in container C. When the container transport vehicle 1 is in motion, the loading device 14 is positioned in a driving posture as shown in Figure 1, with the loading arm 16 extending upward from the front end of the loading section 15.

[0026] As shown by the dashed lines in Figures 1 and 4, the sheet base 13 is a platform positioned between the loading section 15 and the cab 11. The sheet base 13 is a platform on which a sheet for covering a container C loaded on the loading section 15 can be placed. The sheet base 13 comprises a leg portion 131 that extends upward from the subframe 122 and a base portion 132 positioned above the leg portion 131. The leg portion 131 is positioned in front of the loading section 15 on the subframe 122. In other words, the sheet base 13 is positioned between the cab 11 and the loading section 15 in the front-rear direction.

[0027] The base portion 132 is plate-shaped with an upper surface that extends in the front-rear direction and the vehicle width direction. The base portion 132 is also plate-shaped with a predetermined thickness in the vertical direction, and the sides at both ends in the vehicle width direction are arranged to extend along the vertical direction. The base portion 132 also includes railing portions 133 that extend upward from the front and rear ends. A sheet is placed on the upper surface of the base portion 132 between the front and rear railing portions 133.

[0028] As shown in Figures 1 and 2, the ladder 2 is positioned between the cab 11 and the mounted section 15 in the front-rear direction and is used for workers to climb upward. The ladder 2 comprises a ladder body 3 and a detachable member 4 provided on the ladder body 3. In this embodiment, the ladder 2 is provided for workers to climb up and down the seat platform 13, and is designed so that workers can climb up and down from one end in the vehicle width direction (for example, the left end).

[0029] As shown in Figure 2, the ladder body 3 comprises a pair of vertical members 31 extending in the vertical direction, a first step 32 extending between the pair of vertical members 31, a base locking part 5 that locks onto the seat base 13, and a frame locking part 6 that locks onto the vehicle frame 12.

[0030] As shown in Figures 2 and 3, the pair of vertical members 31 are vertically extending rod-shaped bodies that are positioned opposite each other in the front-to-back direction. The pair of vertical members 31 extend vertically so as to be positioned at approximately equal intervals. Each vertical member 31 comprises a vertical member lower end 311 that constitutes the lower end of the vertical member 31, a vertical member upper end 313 that constitutes the upper end of the vertical member 31, and a vertical member middle section 312 that constitutes the space between the vertical member upper end 313 and the vertical member lower end 311. The vertical members 31 in this embodiment are rod-shaped bodies with a substantially uniform thickness and a substantially circular cross-section.

[0031] As shown in Figure 2, the lower end portion 311 of the vertical member is a rod-shaped section that extends linearly in the vertical direction, continuously extending from below the lower end portion of the vehicle body frame 12 to the height of the vehicle body frame 12. In addition, multiple holes that penetrate in the vehicle width direction are formed in the lower end portion 311 of the vertical member, spaced apart in the vertical direction. Specifically, the lower end portion 311 of the vertical member has attachment / detachment connecting holes 3a for attaching the attachment / detachment member 4 and frame connecting holes 3b to which the frame locking portion 6 is connected. Two attachment / detachment connecting holes 3a are formed spaced apart in the vertical direction, and the frame connecting holes 3b are formed above the multiple attachment / detachment connecting holes 3a. Furthermore, the attachment / detachment connecting holes 3a are formed in the center of the lower end portion 311 in the front-rear direction.

[0032] The intermediate portion 312 of the vertical member is a rod-shaped body that extends continuously upward from the upper end of the lower end portion 311 of the vertical member. In this embodiment, the intermediate portion 312 of the vertical member is arranged to extend continuously along the vertical direction from the lower end portion 311 of the vertical member. Furthermore, no holes are formed in the intermediate portion 312 of the vertical member.

[0033] The upper end portion 313 of the vertical member is a rod-shaped body that extends upward and inward in the vehicle width direction from the upper end of the middle portion 312 of the vertical member. In this embodiment, the upper end portion 313 of the vertical member is a rod-shaped body that is curved to extend upward and inward in the vehicle width direction, and is formed to be convex upward and outward in the vehicle width direction.

[0034] The first step 32 is a rod-shaped body extending between a pair of vertical members 31, and in this embodiment, it is a rod-shaped body extending in the front-rear direction. Furthermore, multiple first steps 32 are arranged spaced apart in the vertical direction. Specifically, the first step 32 is a substantially rectangular prism-shaped body, with its front end connected to a vertical member 31 located on the front side and its rear end connected to a vertical member 31 located on the rear side. In this embodiment, the first step 32 is fixed to the vertical member 31 by welding. The first step 32 also includes a lower step 32U connected to the lower end 311 of the vertical member and an intermediate step 32M connected to the intermediate part 312 of the vertical member.

[0035] The lower step 32U is positioned at the same height as the detachable connecting hole 3a at the lower end 311 of the vertical member, and in this embodiment, it is positioned at the same height as the lower of the two detachable connecting holes 3a. Furthermore, the lower step 32U is positioned below the upper surface of the vehicle body frame 12. In this embodiment, the lower step 32U is positioned at the lower end of the lower end 311 of the vertical member and is positioned below the upper surface of the chassis frame 121.

[0036] Multiple intermediate steps 32M are arranged on the intermediate section 312 of the vertical member, spaced apart in the vertical direction. The intermediate steps 32M are arranged at approximately equal vertical intervals from the lower step 32U and the other intermediate steps 32M. Furthermore, the intermediate steps 32M are positioned above the upper surface of the vehicle body frame 12, specifically above the upper surface of the chassis frame 121.

[0037] As shown in Figures 2 and 4, the base locking portion 5 is a substantially L-shaped member comprising a plate-shaped side contact portion 51 that abuts against the side surface of the base portion 132 and a plate-shaped bottom contact portion 52 that abuts against the bottom surface of the base portion 132. The base locking portion 5 is connected to the upper end of the upper end portion 313 of the vertical member. The side contact portion 51 is a plate-like body having surfaces that extend in the vertical and front-rear directions, with the vehicle width direction coinciding with the thickness direction, and has multiple base fixing holes 5a that penetrate in the vehicle width direction. The bottom contact portion 52 is a plate-like body having surfaces that extend in the horizontal direction, with the vertical direction coinciding with the thickness direction, and is connected to the side contact portion 51 so as to extend inward in the vehicle width direction from the lower end of the side contact portion 51.

[0038] The base locking part 5 can be fixed to the base 132 by inserting a bolt through the base fixing hole 5a and securing it with a nut, while the side contact part 51 is in contact with the side of the base 132 and the bottom contact part 52 is in contact with the bottom of the base 132. Here, by bringing two sides of the base locking part 5 into contact with two sides of the base 132, the base locking part 5 is positioned relative to the base 132, and the bolt can be inserted through the base fixing hole 5a, making it easier to fix the base locking part 5 to the base 132.

[0039] The frame locking portion 6 is a member for connecting the vehicle frame 12 and the ladder body 3. The frame locking portion 6 comprises a plate-shaped ladder-side contact portion 61 that abuts against the vertical member 31, a plate-shaped body positioned spaced inward from the ladder-side contact portion 61 in the vehicle width direction and a frame-side contact portion 62 that abuts against the vehicle frame 12, and a connecting extension portion 63 that extends in the vehicle width direction and connects the ladder-side contact portion 61 and the frame-side contact portion 62. The frame locking portion 6 is configured as a block overall.

[0040] The ladder-side contact portion 61 is a plate-like body that contacts the inner surface of the vertical member 31 in the vehicle width direction. The ladder-side contact portion 61 has surfaces that extend in the vertical and front-rear directions, and is a plate-like body that is positioned so that its thickness direction coincides with the vehicle width direction. The ladder-side contact portion 61 also has ladder-side fixing holes 6a that overlap with the frame connection holes 3b when in contact with the vertical member 31. Multiple ladder-side fixing holes 6a are formed at intervals in the front-rear direction and are designed to overlap with the respective frame connection holes 3b of the pair of vertical members 31. The ladder-side contact portion 61 is fixed to the vertical member 31 by overlapping the ladder-side fixing holes 6a with the frame connection holes 3b, inserting bolts, and securing them with nuts.

[0041] The frame-side contact portion 62 is a plate-like body that contacts the vehicle body frame 12. The frame-side contact portion 62 has surfaces that extend in the vertical and front-rear directions, and is a plate-like body that is arranged so that its thickness direction coincides with the vehicle width direction. In this embodiment, the frame-side contact portion 62 contacts the oil tank stay 19, which is part of the hydraulic equipment that serves as the power supply unit, within the vehicle body frame 12. The frame-side contact portion 62 also has a plurality of frame fixing holes 6b that penetrate in the thickness direction. The frame-side contact portion 62 is fixed to the vehicle body frame 12 by inserting bolts through the frame fixing holes 6b and securing them with nuts while it is in contact with the vehicle body frame 12.

[0042] The connecting extension 63 is a plate-like body that extends in the vehicle width direction and connects the ladder-side contact portion 61 and the frame-side contact portion 62. Specifically, the outer end of the connecting extension 63 in the vehicle width direction is connected to the ladder-side contact portion 61, and the inner end in the vehicle width direction is connected to the frame-side contact portion 62.

[0043] As shown in Figures 2 to 5, the detachable member 4 is a member that can be attached to and detached from the lower end 311 of the vertical member. Specifically, the detachable member 4 comprises a vertical member fitting portion 41 that fits onto the lower end 311 of the vertical member, and a second step 42 that extends from the vertical member fitting portion 41 to the outside of the vertical member 31.

[0044] As shown in Figure 5, the vertical member fitting portion 41 is plate-shaped and comprises a pair of opposing plate portions 43 arranged opposite to the outer and inner sides in the vehicle width direction of the vertical member 31, and a plate-shaped connecting plate portion 44 that connects one end of the pair of opposing plate portions 43 in the front-rear direction. The vertical member fitting portion 41 as a whole is a U-shaped member with a cross section perpendicular to the vertical direction, and can be fitted to the lower end portion 311 of the vertical member by inserting the lower end portion 311 of the vertical member into the interior from the other end in the front-rear direction.

[0045] The opposing plate portion 43 is a plate-like body that extends in the vertical and front-rear directions, and is arranged so that its thickness direction coincides with the vehicle width direction. The opposing plate portion 43 also has an opposing hole 4a formed so as to overlap with the detachable connecting hole 3a when facing the vertical member 31 in the vehicle width direction. Furthermore, the opposing plate portion 43 in this embodiment is configured to be symmetrical in the vertical and front-rear directions. Therefore, even when the opposing plate portion 43 is inverted vertically or front-rear and positioned opposite the vertical member 31, the opposing hole 4a can still overlap with the detachable connecting hole 3a.

[0046] As shown in Figures 3 and 5, the second step 42 is a rod-shaped body provided so as to extend from the connecting plate portion 44 toward one end in the front-rear direction (opposite side from the opposing plate portion 43). The second step 42 is a rod-shaped body fixed to the connecting plate portion 44 by welding. The second step 42 is also connected to the connecting plate portion 44 at a position that is biased to one side in the vertical direction. In this embodiment, the second step 42 is connected to the connecting plate portion 44 at one end in the vertical direction. In this embodiment, the second step 42 is positioned at the height where the opposing hole 4a is formed and extends horizontally.

[0047] Such a detachable member 4 is attached to the vertical member 31 by fitting the vertical member fitting portion 41 and the lower end portion 311 of the vertical member, aligning the detachable connecting hole 3a and the opposing hole 4a, inserting a bolt, and securing it with a nut. The detachable member 4 is removed from the vertical member 31 by removing the fixing bolt and nut. In this embodiment, the detachable member 4 is attached to the vertical member 31 such that the second step 42 is located on the lower end side. In this embodiment, the detachable member 4 is attached to the vertical member 31 such that the second step 42 is located off-center to the lower side.

[0048] In this configuration, with the detachable member 4 attached to the vertical member 31, the second step 42 extends toward the rear of the vertical member 31, which is the side closer to the mounted portion 15. In other words, the second step 42 extends outward from the vertical member 31 (to the opposite side from the other vertical member 31 from the vertical member 31 to which the detachable member 4 is attached). In this embodiment, the detachable member 4 is provided on the rear vertical member 31, and the second step 42 extends toward the rear from the rear vertical member 31. Furthermore, since the detachable member 4 is attached to the vertical member 31 at a position below the upper surface of the vehicle frame 12, the second step 42 is located below the upper surface of the vehicle frame 12. Also, of the first step 32, the lower step 32U is positioned at the same height as the detachable connecting hole 3a formed below, and the second step 42 is positioned at the same height as the opposing hole 4a that overlaps with the lower detachable connecting hole 3a, so the lower step 32U and the second step 42 are located at the same height.

[0049] In a specially equipped vehicle with the above configuration, the second step 42 extends outward from the pair of vertical members 31 below the upper surface of the vehicle frame 12, so that when climbing the ladder 2, one can place their hands or feet on the second step 42 to climb up. In particular, when the distance from the cab 11 to the mounted section 15 is short, the width (length in the front-to-back direction) of the first step 32 becomes short, and it may be difficult to place one's hands or feet on the ladder 2. However, even in such cases, since the second step 42 extends outward from the vertical members 31 below the upper surface of the vehicle frame 12, one can place their hands or feet on the second step 42.

[0050] Furthermore, although the ladder 2 is provided between the cab 11 and the mounted section 15, the distance between the cab 11 and the mounted section 15 in the front-rear direction may be shortened in order to reduce the overall front-rear length of the special-purpose vehicle, in which case the widthwise length of the ladder 2 will be shortened. However, in the above embodiment, the second step 42 extends from the vertical member 31 towards the mounted section 15 below the upper surface of the vehicle frame 12, so the space below the mounted section 15 (dead space) can be effectively utilized to make it easier to climb onto the ladder 2.

[0051] Furthermore, since the second step 42 is detachable from the vertical member 31, the second step 42 can be removed or replaced as needed. This makes the ladder 2 easier to use.

[0052] Furthermore, the second step 42 can be provided on any one or two of the pair of vertical members 31. Therefore, the second step 42 can be easily positioned as needed. In the above embodiment, since both of the pair of vertical members 31 have attachment / detachment connecting holes 3a, the second step 42 can be provided by attaching the attachment / detachment member 4 to any one or two of the vertical members 31 using the attachment / detachment connecting holes 3a.

[0053] Furthermore, since the ladder 2 is positioned on the side of the special vehicle and the second step 42 extends in the front-rear direction on the side of the special vehicle, the second step 42 is easily visible from the side of the special vehicle.

[0054] Although an example of an embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0055] For example, although a container transport vehicle 1 was used as an example of a special-purpose vehicle in the explanation, the present invention can be applied to various special-purpose vehicles having a body that is fixed or secured to the frame. Examples of special-purpose vehicles include, but are not limited to, dump trucks, garbage collection vehicles, vehicle transport vehicles, tank trucks, concrete pump trucks, mixer trucks, etc.

[0056] Furthermore, although the vehicle frame 12 has been described as comprising a chassis frame 121, a subframe 122, and a transverse frame, it is not limited to this configuration, and it is also possible to have a configuration without a subframe 122 and a transverse frame.

[0057] Furthermore, although we have described the case in which the pair of vertical members 31 are spaced apart in the front-rear direction, the configuration is not limited to this, and the pair of vertical members 31 can be spaced apart in the vehicle width direction, or the pair of vertical members 31 can be configured to be twisted in the middle of the vertical direction so that they are spaced apart in the front-rear direction at the lower end and spaced apart in the vehicle width direction at the upper end.

[0058] Furthermore, although the detachable member 4 was described using the example of a case where the second step 42 is attached to the vertical member 31 so that it is located lower on the detachable member 4, the configuration is not limited to this, and the second step 42 can also be attached to the vertical member 31 so that it is located higher on the detachable member 4. In such a case, the lower step 32U and the second step 42 are positioned at different vertical positions, making it easier to place both hands or both feet on the first step 32 and the second step 42 while climbing up or down the ladder 2.

[0059] Furthermore, although the second step 42 was explained using the example of a case where it is detachable from the vertical member 31, the configuration is not limited to this, and it can also be configured to be fixed to the vertical member 31 in a way that it cannot be detached. An example of such a configuration is when the second step 42 is directly welded to the vertical member 31.

[0060] Furthermore, the second step 42 can be provided to extend and retract to the outside of the vertical member 31, or it can be configured to rotate around an axis extending in the vehicle width direction, allowing it to switch between a state where it extends along the vertical member 31 and a state where it extends to the outside of the vertical member 31. In such a configuration, the second step 42 can be switched between a stored state where it is retracted and an extended state where it extends to the outside of the vertical member 31, so the state of the second step 42 can be easily switched and used as needed.

[0061] Furthermore, although the second step 42 was explained using the example of extending in the front-to-back direction, the configuration is not limited to this, and it is also possible to have a configuration that extends in other directions, such as in the vehicle width direction or in directions that intersect the front-to-back and vehicle width directions.

[0062] Furthermore, although the first step 32 has been described as including a lower step 32U, the configuration is not limited to this, and the first step 32 may also consist only of an intermediate step 32M without including a lower step 32U. [Explanation of Symbols]

[0063] 1...Container transport vehicle, 2...Ladder, 3...Ladder body, 3a...Detachable connecting hole, 3b...Frame connecting hole, 4...Detachable member, 4a...Opposite hole, 5...Base locking part, 5a...Base fixing hole, 6...Frame locking part, 6a...Ladder side fixing hole, 6b...Frame fixing hole, 11...Cab, 12...Vehicle frame, 13...Seat base, 14...Cargo handling device, 15...Loaded part, 16...Cargo handling arm, 17...Arm body, 18...Hook part, 19...Oil tank stay, 31...Vertical member, 32...First step, 3 2M...Intermediate step, 32U...Lower step, 41...Vertical member fitting part, 42...Second step, 43...Opposite plate part, 44...Connecting plate part, 51...Side contact part, 52...Bottom contact part, 61...Ladder side contact part, 62...Frame side contact part, 63...Connecting extension part, 121...Chassis frame, 122...Subframe, 131...Leg part, 132...Base part, 133...Fence part, 311...Lower end of vertical member, 312...Intermediate part of vertical member, 313...Upper end of vertical member, C...Container, C1...Engaged part, M...Loaded object

Claims

1. It comprises a cab, a vehicle frame extending rearward from the cab, and a ladder. The aforementioned vehicle frame has a mounting section on its upper surface on which an object is mounted, The mounted portion is located at a distance from the rear of the cab, The ladder is positioned between the cab and the mounted section. The ladder extends vertically from below to above the vehicle frame and comprises a pair of vertical members arranged opposite to each other in opposing directions perpendicular to the vertical direction, and a first step and a second step provided on the vertical members and extending in the opposing directions. The first step is provided in multiple locations spaced apart in the vertical direction, extending between the pair of vertical members. The second step is a specially equipped vehicle, provided below the upper surface of the vehicle body frame, extending from one of the pair of vertical members outwards from the pair of vertical members and toward the mounted portion.

2. The special vehicle according to claim 1, wherein the second step is provided so as to extend in the front-rear direction.

3. The first step includes a lower step located below the upper surface of the vehicle body frame, The special vehicle according to claim 1 or 2, wherein the lower step and the second step are provided at approximately the same height.

Images