JPH021181Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an articulated trailer truck in which a plurality of loading platforms are connected at the front and rear, and more particularly to a bridging device that can form a cargo handling passage between adjacent loading platforms.

Today, in order to improve the efficiency of automobile cargo transportation,
Articulated trailer trucks, in other words, articulated trailer trucks, have been put into practical use and can transport a large amount of cargo at once by connecting multiple (usually two) freight vehicles to the front and back. For example, specific examples include a full-trailer-coupled vehicle in which a normal truck is used as a tractor and a full trailer is coupled to the back, and a double-trailer-coupled vehicle in which a semi-trailer is coupled to the back of a special tractor, and a full trailer is further coupled to the rear of the semi-trailer. can be mentioned.

By the way, in such an articulated trailer truck, the loading platform on the tractor side and the loading platform on the trailer side are generally separated, and the rear parts of each are separated.
For example, cargo handling is carried out while the truck is at a cargo loading area such as a platform, but if two cargo vehicles are placed side by side, it will require twice as much space as a normal truck. This was an impediment to the efficient use of resources.

On the other hand, by attaching such connected vehicles in a straight line to a platform, etc., and by spanning a gangplank between the front and rear loading platforms to form a cargo handling passage, the front side can be easily accessed without separating the connected vehicles. It is also conceivable to load cargo sequentially from the loading platform to the rear loading platform. In fact, the present applicant has applied for a device using such a spanning board as Utility Model Application No. 58-63832 and Utility Model Application No. 59-167708.

However, unlike ordinary trucks, articulated trailer trucks have two or more bends (junctions), making it difficult for them to form a straight line when coupled. When this is required, it cannot be denied that it requires a considerable amount of time and skill.

The present invention was developed based on the above-mentioned circumstances, and its purpose is to enable cargo handling work to be carried out from the rear of the rearmost cargo platform between each cargo platform without having to separate the front and rear cargo platforms. Moreover, it is an object of the present invention to provide a bridging device that enables bridging even if the connected vehicles are not in a straight line.

In order to achieve such an objective, the present invention includes a plurality of support members whose lengths can be adjusted independently according to the distance between adjacent front and rear loading platforms.
In addition to being provided so as to be able to span between the two loading platforms, a spanning board is provided that is placed on a plurality of supporting members that span between these loading platforms and connects the floor portions of the two loading platforms, and the spanning board allows the bridge between the two loading platforms to be bridged. A passage for cargo handling was formed between the cargo platforms.

In this way, during cargo handling, cargo can be continuously loaded and unloaded from the rearmost cargo platform to the front cargo platform without separating multiple connected vehicles, especially when unloading from a platform etc. Parking space is saved and its efficient use becomes possible.

Furthermore, even when the front and rear loading vehicles are bent to some extent, in other words, the center lines of each loading platform form a predetermined angle (in this case, the distance between adjacent loading platforms is However, since it is possible to adjust the lengths of the multiple support members accordingly, there is no problem in spanning them between the two loading platforms. By placing the span plate on the support member, it is possible to form a cargo handling passage despite the bent state. Therefore,
The time required to straighten connected vehicles,
This means that a high level of skill is not required.

Moreover, since the above-mentioned gangplank is supported by a plurality of support members spanning between the front and rear loading platforms, even if the loading platforms rise and fall due to the expansion and contraction of the suspension springs as loading and unloading progress, It is possible to follow.

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings. The embodiment described below is an example in which the present invention is applied to a full-trailer coupled vehicle as shown in FIG.

In this fully trailer articulated vehicle, which is an articulated trailer truck, a towing truck 12 equipped with a van-type loading platform 10 functions as a tractor.
A full trailer 16, also equipped with a van-type loading platform 14, is connected to the rear of the vehicle 2 by a pintle hook 18, a tow bar 19, and a dolly 20. At the rear end of the loading platform 10 of the truck 12,
A double door door 22 that opens left and right is provided, and double door doors 24 and 26 that open left and right are also provided at the front and rear ends of the loading platform 14 of the full trailer 16, respectively.

As shown in FIGS. 2 and 3, a plurality of support stays 28 are provided as support members in a state that they can be bridged between the adjacent front and rear loading platforms 10 and 14. ing. As is clear from FIG. 4, these support stays 28 are
Each of them is rod-shaped, and the six of them are the loading platform 14.
are arranged parallel to each other at a predetermined distance apart in the width direction, and are stored in a drawable state under the floor of the loading platform 14. Latching pins 30 as engaging portions are fixed to the drawer side ends of these support stays 28 in a state that projects downward, and in the pulled out state, these latch pins 30 By being fitted into the fitting groove 32 formed along the width direction at the rear end of the carrier 10, each of the support stays 28 is bridged between the front end of the carrier 10 and the rear end of the carrier 14. It's getting old.

In addition, although the length of each support stay 28 is not expandable or retractable, the length of each support stay 28 is not adjustable.
By adjusting the amount of drawer from 4, loading platform 1
The lengths are each independently adjustable according to the spacing between 0 and 14. Therefore, as shown in FIG. 5, the loading platforms 10 and 14 are not in a straight line;
In a somewhat bent state, in other words, loading platform 1
Even when the center lines O ₁ and O ₂ of the carriers 0 and 14 form a predetermined angle, each support stay 2
By varying the amount of pullout of the loading platform 8 in accordance with the change in the widthwise spacing between the loading platforms 10 and 14, it is possible to bridge between the loading platforms 10 and 14.

Further, a span plate 34 is placed on the plurality of support stays 28 that span between the loading platforms 10 and 14 in this manner. As is clear from FIG. 3, this span plate 34 is attached to the front end of the loading platform 14 so as to be rotatable between an upright position and a horizontal position. It is supported by a support stay 28 of and forms a cargo handling passage between the cargo platforms 10 and 14 by connecting the floor section 38 of the cargo platform 10 and the floor section 40 of the cargo platform 14 on substantially the same plane. It is.

A large number of balls 42 as roller members are arranged on the upper surface of the span plate 34 so as to be rotatable in all directions, thereby forming a ball caster 44. The upper surface of this ball caster 44 and the loading platform 10
The roller caster 46 provided on the floor 38 of the loading platform 14 and each roller surface of the roller caster 48 provided on the floor 40 of the loading platform 14 are substantially flush with each other, and these roller casters 46 and 48
During cargo handling, these are lifted up by hydraulic cylinders, etc. to the position shown in Figure 3, but normally they are held in a lowered position below the floor level. ing.

For example, a pallet on which cargo is placed is carried on the ball caster 44 on the loading platforms 10 and 14.
will be moved from one side to the other,
As is clear from FIG. 4, the ball caster 44 is not provided over the entire surface of the span plate 34, but extends in the form of a band in the center and on both sides, and the ball 42 is provided between them. It has a strip-shaped part that is not covered, so that workers can cross this part.

When viewed as a whole, such a gangboard 34 has the following characteristics:
Although it has a substantially rectangular shape with a width that can cover the space between the connecting portion of the loading platform 10 and 14, the tip edge of its free end, in other words, the tip of the loading platform 10 when it is tilted from an upright position to a horizontal position. Connection side end (rear end)
The side parts corresponding to are formed in a chevron shape with the center as the apex and sloped on both sides.
As shown in FIG. 5, even when the loading platforms 10 and 14 are bent to some extent, the portion of the free end of the spanning plate 34 near the corner rests on the floor at the rear end of the loading platform 10. It is now possible to avoid rising prices. That is, the gangplank 34
If it had a perfect rectangular shape, the part near the corner on the tip side would interfere with the connecting side end of the other party's loading platform 10, but the tip edge would be cut off diagonally, so to speak. Therefore, such interference is avoided.

In addition, since the leading edge of the spanning board 34 has such a chevron shape, the leading edge of the spanning board 34 and the loading platform 1 are in contact with each other in both the states shown in FIGS. 4 and 5.
0, but this is not a problem unless you are sliding a very small load, and especially when sliding the load on a pallet as mentioned above. It is not a hindrance.

As is clear from FIG. 3, the spanning plate 34 is integrally provided with an arm portion 50 that extends in the opposite direction from the free end side across the shaft 36 that is the center of rotation. A wire 52 is connected to the free end of the arm portion 50. This wire 52
is changed in direction by a guide roller 54 and extends toward the rear side of the loading platform 14, and its end is connected to a winding type winch 56, as is clear from FIG. Therefore, by turning the handle 58 of this winch 56, the spanning plate 34 can be rotated and raised from the horizontal position to the upright position shown by the two-dot chain line in FIG. 3 via the wire 52. The winch 56, wire 52, etc. constitute a driving means for driving the spanning board 34 to the upright position, which is the storage position.

When the spanning board 34 is rotated to the upright position, the opening/closing door 24 on the front side of the loading platform 14 is in an open state. When the opening/closing door 24 is closed, the vehicle is stored inside the door 24, and therefore, there is an advantage that the spanning board 34 does not get wet with rain or get mud etc. while driving.

Further, as shown in FIG. 7, which is a partial plan cross-sectional view of the vicinity of the spanning board 34 in that state, further inside the spanning board 34 in the upright state, an interior board 60,
62 (see Figure 8) are arranged, and the loading platform 14
This prevents the cargo stored in the ball from being damaged by the ball 42 of the ball caster 44. These interior panels 60 and 62 are
It can be removed by being inserted into insertion grooves 64 formed on both inner wall surfaces of the opening/closing door 24 in order from the upper side, and as is clear from FIG. Spacer plate 6
6 and 68 are fixed to each other, thereby preventing a step from forming between the inner surface of the opening/closing door 24 and the inner surface of the interior panels 60 and 62 in the closed state.

In this embodiment, as is clear from FIG. 4, a pair of guide rails 70, 70 functioning as guide members are provided on both sides of the spanning board 34 which is laid down horizontally to form a passage for cargo handling. are arranged in parallel to each other so as to straddle between both loading platforms 10 and 14. These guide rails 70, as shown in FIG.
Two rail members are slidably fitted together to enable length adjustment, and engagement pins 72, 72 projecting downward are provided at both ends of the rail members.
is integrally provided, and by being fitted into pin holes 74, 74 formed in the loading platforms 10 and 14, respectively, it can be removably spanned over the loading platforms 10 and 14. .

Furthermore, a plurality of balls 76 are rotatably arranged on the inner guide surface of these guide rails 70 as roller members, and as is clear from FIG. By guiding the sides of a pallet (on which a predetermined cargo G is loaded), the pallet P is prevented from falling from the spanning plate 34 between the cargo platforms 10 and 14. and,
The distance between the inner guide surfaces of these guide rails 70, 70 is narrower to some extent than the dimension between the side wall surfaces of the loading platforms 10, 14, so that the pallet P guided by the guide rails 70 is
Alternatively, when the pallet P is carried to the side of the pallet 14, a slight gap is created between the side wall surface and the side surface of the pallet, so that the pallet P does not collide with the side wall surface, and smooth movement can be ensured.

In addition, as shown in FIG. 9, the loading platform 1
Rotatable balls 78 are also provided on both side wall surfaces of the connecting end portions 0 and 14, and these also serve to guide the side surfaces of the pallet P.

When using the bridging device configured as described above, during cargo handling, as shown by the dashed line in FIG.
Then, open the front opening/closing door 24 of the loading platform 14, pull out the plurality of support stays 28 from the bottom of the loading platform 14, and place them over the rear end of the loading platform 10. Next, turn the handle 58 of the winch 56 to open the spanning plate 34. is brought down to a horizontal state and supported on the plurality of stays 28. Further, the interior plates 60 and 62 shown in FIG.
so that they bridge each other. By that,
loading platform 14 without separating loading platforms 10 and 14;
From the rear opening of the
It is possible to load cargo onto the cargo platform 10, and conversely, it is possible to unload cargo loaded on the cargo platform 10 from the rear end of the cargo platform 14 via the spanning board 34.

A particularly significant feature of the bridging device of this embodiment is that it can be used even when the loading platforms 10 and 14 are bent as shown in FIG. That is, in such a state, the amount of pullout of each stay 28 is
By varying the spacing in the width direction between the span boards 34, it is possible to bridge the bridge without any problems even when the bridge is bent.Furthermore, since the leading edge of the spanning board 34 is cut off in a chevron shape, it will not bend easily. Despite the curved state, it is possible to form a passage for cargo handling. Therefore, it is no longer essential to make the loading platform 10 and 14 in a straight line, for example, when mounting the platform from the rear, etc., and therefore the operator does not require a high level of skill, and does not require extra skill when stopping. It can save you a lot of time. Moreover, since the support stay 28 is of a pull-out type and the bridging plate 34 is of a flip-up type, setup operations for bridging and storage operations can be performed in a single time.

Further, since a ball caster 44 having free directionality is provided on the upper surface of the spanning board 34, it is easy to change the direction of pallets, etc. that are moved between the loading platforms 10 and 14, and the guides on both sides can be easily changed. Due to the rails 70, there is no fear of falling from the spanning board 34, and moreover, the guide rails 70
Since the space between them is narrowed as described above, it is possible to move them smoothly to the loading platform 10 or 14.

Further, the span plate 34 is supported by a plurality of stays 28, and these stays 28 are connected to both loading platforms 10.
and 14, even if the amount of deflection of the suspension spring changes as loading and unloading progresses, the spanning board 34 can follow it.
There is no difference in level between each of the floor sections 14 and both ends of the spanning board 34.

Note that it is also possible to route the wire 52 for rotating the span plate 34 as shown in FIG. However, by connecting the wire 52 to the rear end side of the spanning board 34 as in this embodiment, interference with the cargo being moved can be avoided. It is.

Furthermore, since the bridging device in this embodiment is entirely stored in the loading platform 14 on the side of the trailer being towed, the tractor 1 on the loading platform 10 side
Another feature of the vehicle is that when the vehicle is traveling alone, the weight of the vehicle does not increase and there is no adverse effect on fuel efficiency, etc.

Although the embodiments of the present invention have been described in detail above, the present invention can be implemented in other forms as well.

For example, the leading edge on the free end side of the spanning board 34,
It is also possible to create a curved shape with the apex at the center, for example, a shape cut off along an arc as shown in Figure 11. Even in this case, when adjacent loading platforms are bent, It is possible to avoid interference with the ends.

It is also possible to use a motor or the like to wind up the winch for rotating the span plate 34 instead of using a manual type, and furthermore, instead of a winch, it is possible to rotate the span plate 34 using an actuator such as a hydraulic cylinder. It can also be made to move.

Furthermore, the spanning board 34 is not a rotary type, but is mounted on the loading platform 10.
Or it can be stored in the drawer under the floor of 14,
In addition, a guide portion may be provided to move the spanning board to a position where both floor portions are connected in substantially the same plane in the pulled out state.

On the other hand, regarding the support stay as a support member, instead of storing it in a drawable manner,
If it is rotatably attached to the connecting side end of the loading platform 10 or 14 so that it can be stored in a foldable manner, and the length of each can be expanded and contracted as a telescopic structure, the above-mentioned embodiment can be achieved. The same effect can be obtained.

Furthermore, as shown in FIG.
By providing guide bars 80 at the lower portions of both side walls at the connection side ends of 0 and 14, the guide rails 70 on both sides and both side walls of each loading platform 10 and 14 are smoothly connected. It may also be possible to guide the sides of the pallet being moved via the spanning plate 34 to the loading platform 10 or 14. In that case, for example, as shown in FIG. 13, one end of the guide bar 80 is rotatably attached to the side wall of the loading platform 14 or the like by a shaft 82, and when handling cargo, the guide bar 80 is attached to the inside by a fitting pin 84. While holding it in an inclined position, when not in use, it can be rotated to a storage position flush with the side wall of the loading platform, and the pin hole 86
It can be held in that position by dropping the fitting pin 84 into it.

Further, as is clear from FIG. 13, the pair of guide rails 70 can be stored upright inside the closed door 24 when not in use. Further, a removable ball caster 88 as shown in FIGS. 14 and 15 is installed on the connecting side of the cargo platforms 10 and 14 at the front and rear sides of the span plate 34, as shown in FIG. 12, for example. By arranging it at the end, it is also possible to fill the space between the ball caster of the spanning board 34 and the roller casters, etc. of both floor parts.

Furthermore, the present invention is applicable not only to a full trailer coupled vehicle as shown in FIG. 1, but also to a double trailer coupled vehicle as shown in FIG. The present invention can be similarly applied to a trailer truck having a structure in which a semi-trailer 94 is connected and a full trailer 96 is connected to the rear of the semi-trailer 94. In addition, various changes and improvements may be made to the specific structure of the present invention based on the knowledge of those skilled in the art, such as providing rollers instead of balls on the upper surface of the gangboard or the inner guide surface of the guide rail. It goes without saying that it is possible for there to be.

[Brief explanation of the drawing]

FIG. 1 is a diagram schematically showing a full trailer articulated vehicle, which is an example of an articulated trailer truck to which the present invention is applied. FIG. 2 is a partial side view showing one embodiment of the bridging device provided at the cargo platform connecting portion, and FIG. 3 is a side view showing the bridging device in further enlargement and detail. FIG. 4 is a plan view showing a state in which the bridging device bridges adjacent loading platforms in a straight line state, and FIG. 5 is a plan view showing a state in which adjacent loading platforms are bridged in a bent state. . Figure 6 is - in Figure 4.
FIG. 7 is a cross-sectional view of FIG. 2. FIG. 8 is a diagram showing the entire view in the direction of the arrows in FIG. 7, and FIG. 9 is a side view showing an example of a guide rail as a guide member. 1st
FIG. 0 is a diagram showing an example of the arrangement of wires for rotating the spanning board, and FIG. 11 is a partial plan view showing another embodiment of the spanning board of the present invention. FIG. 12 is a plan view schematically showing another embodiment of the present invention, and FIG. 13 is a partial plan view showing an enlarged part of FIG. 12 in detail. 14 and 15 are perspective views showing specific examples of ball casters arranged at the front and rear ends of the platform, respectively, and FIG. 16 is a perspective view of another type of coupled vehicle to which the present invention is applied. FIG. 10, 14: Loading platform, 12: Towing truck, 1
6: Full trailer, 28: Support stay (support member), 30: Latch pin, 32: Fitting groove, 34:
Spanning board, 36: shaft, 42: ball (roller member),
44: ball caster, 52: wire, 56: winch, 60, 62: interior plate, 70: guide rail (guide member), 76: ball (roller member), 80: guide bar.

Claims (1)

[Claims for Utility Model Registration] (1) In an articulated trailer truck consisting of a plurality of front and rear loading platforms connected, a plurality of support members whose lengths can be adjusted independently according to the spacing between adjacent front and rear loading platforms. is provided so as to be able to be spanned between the two loading platforms, and a spanning board is provided that is placed on a plurality of supporting members spanning between the loading platforms and connects the floors of the two loading platforms; A bridging device between loading platforms in an articulated trailer truck, characterized in that a passage for cargo handling is formed between the loading platforms. (2) the spanning board is rotatably attached to the connecting end of one of the adjacent loading platforms;
While it is stored in an upright position when traveling, it is folded down to a nearly horizontal position during cargo handling to form the cargo handling passage, and the leading edge of the free end of the spanning plate has its apex at the center. Even in a state in which the platform center lines of the adjacent cargo platforms form a predetermined angle with each other, a part of the tip edge of the gangplank that is folded into the horizontal state is formed in a chevron-shaped or curved shape, and a portion of the leading edge of the spanning board is the connecting side end of the other platform. The bridging device according to claim 1, wherein interference with the utility model is avoided. (3) The bridging device according to claim 1 or 2, wherein the spanning board has a plurality of rotatable roller members on its upper surface, and the roller members are balls or rollers. (4) The plurality of support members are rod-shaped support stays, and each of the support stays is retractably stored under the floor of one of the adjacent loading platforms, and each of the support stays is pulled out during cargo handling. Utility model registration claim No. 1, which states that the length of the support stay to be spanned between both loading platforms can be adjusted by varying the amount of withdrawal in accordance with the change in the widthwise interval between the loading platforms. The bridging device according to any one of Items 1 to 3. (5) Guide members for guiding the movement of objects to be moved from one side of the adjacent loading platform to the other are arranged on both sides of the spanning board so as to span between the connecting parts of both loading platforms. and a plurality of roller members such as balls or rollers are rotatably arranged on the inner guide surface of the guide members, according to any one of claims 1 to 4 of the utility model registration claims. Bridging device.