JP3352266B2 - Multipurpose cargo vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure having a lower deck and an upper deck, wherein the upper deck is moved up and down along a column. The present invention relates to a multipurpose cargo vehicle capable of transporting cargo other than a vehicle in a state where the vehicle is carried out.

[0002]

2. Description of the Related Art Generally, a freight truck dedicated to transporting vehicles as cargo is a two-stage or three-stage system having a lower deck and an upper deck so that more vehicles can be loaded at one time. It has been.

[0003] In particular, it is customary that the upper deck can be raised and lowered, and as a means for raising and lowering the link, a link mechanism system in which the upper deck is supported by a plurality of links operated by hydraulic cylinders, There is a pillar system in which the upper deck is supported by a plurality of pillars and is moved up and down using a hydraulic cylinder and wires.

[0004] Of these, in a freight car for transporting vehicles using a column system, each column is erected to oppose both side edges of a lower deck, and hydraulic cylinders are individually fixed to each column. ing. A pulley is fixed to the telescopic rod of the hydraulic cylinder, and the wire is hung on the pulley.

[0005] When one end of the wire is locked to the upper deck and the other end is locked to the column, the pulley is moved up and down by expanding and contracting the telescopic rod of the hydraulic cylinder.
The movement is transmitted to the upper deck via the wire, and thus the upper deck is moved up and down. It should be noted that even in the case of the column system, the upper deck is raised and lowered by using a link mechanism.

[0006]

However, according to the above-mentioned conventional vehicle transporting freight car using the column system, since the column is fixed to the vehicle body, the upper deck is lowered and other than the vehicle is placed thereon. When trying to load cargo, for example, a long steel material, the standing pillars hinder the work.
For this reason, there is a drawback that such a long object can be loaded and unloaded only from the upper portion and the rear side, and therefore, an efficient loading and unloading operation cannot be performed.

On the other hand, in the case of the link mechanism, the elevating mechanism is complicated and the link mechanism must always support the rear part of the upper deck even when the upper deck is lowered. The rear part of the deck became unstable in the middle waist, and there was a disadvantage that the upper deck was likely to roll even when it was lowered.

The present invention has been made in view of the above circumstances, and has as its object the purpose of stabilizing a flat floor by integrating the upper deck with the lower deck in a state where the upper deck is lowered and overlapped on the lower deck. By securing the surface and lowering the strut with the upper deck lowered,
An object of the present invention is to provide a multipurpose cargo vehicle capable of loading and unloading cargo from the side of a vehicle body.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a plurality of columns which are erected on both sides of a lower deck on which cargo can be loaded, and which are provided on the columns. A cargo vehicle having an upper deck that is raised and lowered by a mechanism, wherein each of the columns is swingably supported by a support shaft in a vehicle width direction, and a support shaft of a column opposed in the vehicle width direction has a lower portion. The upper deck is provided with a stepped groove toward the vehicle width direction on the upper surface of the upper deck, and the upper deck is at the lower end and the column facing the vehicle width direction is the concave groove. In particular, in the multipurpose cargo vehicle as described above, a guide shaft connected to the upper deck is provided on the support column so as to be able to move up and down, and the upper deck is provided below the support column. Is at the lower end The receiving cylinder the guide shaft is introduced is provided, the receiving cylinder is characterized by comprising a bottom surface for receiving said guide shaft.

[0010] The present invention also includes a plurality of columns standing upright so as to be opposed to both side edges of a lower deck on which cargo can be loaded, and an upper deck raised and lowered by a lifting mechanism provided on the columns. A freight vehicle, wherein each support is swingably supported by a support shaft with respect to the longitudinal direction of the lower deck, and each support is provided with a guide shaft connected to the upper deck so as to be able to move up and down. Below the column, an upper deck is provided at a lower end, and a receiving cylinder into which the guide shaft is introduced is provided. The receiving cylinder has a bottom surface for receiving the guide shaft, and the guide shaft is received by the bottom surface. In this state, each of the columns can fall down along the longitudinal direction of the lower deck.

In the multipurpose cargo vehicle as described above, the lifting mechanism comprises a hydraulic cylinder fixed to a support, a pulley provided at the tip of a telescopic rod of the hydraulic cylinder, and one end locked to the upper deck. And a wire whose other end is locked to a fixed portion including the support via the pulley.

[0012]

According to the multipurpose cargo vehicle of the present invention, the upper deck is moved up and down along the columns by the operation of the lifting mechanism, and the columns are lowered at the lower end of the upper deck.

[0013] In particular, according to the first aspect of the present invention, the struts lie down in the vehicle width direction, and at this time, the opposing struts are stored in a state of being sequentially folded in the grooves of the upper deck. In this state, the struts are flush with the upper deck without protruding or sinking from the upper surface of the upper deck. When various cargoes are loaded on the upper deck in that state, the hydraulic cylinders are protected by the columns. On the other hand, according to the third aspect of the invention, the struts lie down in the longitudinal direction of the lower deck, and at this time, the struts are stored in the lower deck in such a manner as to be adjacent to the upper deck. Then, in a state where the support pillar is folded down, a long steel material or the like can be loaded and unloaded from the side of the vehicle body.

In particular, according to the third aspect of the present invention, after the cargo is loaded, the column can be erected again, and this serves to prevent the collapse of the load.

According to the second and third aspects of the present invention, when the upper deck is lowered, the guide shaft is introduced from the support into the receiving cylinder, and is received by the bottom surface of the receiving cylinder. In other words, when the upper deck descends and overlaps the lower deck, the hydraulic cylinder that constitutes the lifting mechanism does not support the upper deck, and the guide shaft received at the bottom of the receiving cylinder supports the upper deck The upper deck is integrated with the lower deck to provide a stable flat floor.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below. In FIG. 1, A is a multipurpose freight vehicle, and B is a tow vehicle for towing the multipurpose freight vehicle A. In the present invention, the multipurpose freight vehicle A and the towing vehicle B may be of a truck type, but in the present embodiment, the multipurpose freight vehicle A will be described as a trailer type.

As shown in the figure, a multipurpose cargo vehicle A has a front portion connected to a towing vehicle B and a rear portion supported by its own wheel t. Reference numeral 10 denotes a lower deck, and reference numeral 20 denotes an upper deck. A predetermined number of vehicles C can be loaded on the lower deck 10 and the upper deck 20 as cargo.
It goes without saying that cargo other than vehicles can be loaded.

The upper deck 20 is supported by a plurality of columns 30 standing upright at opposite sides of the lower deck 10 at predetermined intervals.
It is configured to be able to move up and down along zero.
Each of the columns 30 is swingably supported with respect to the lower deck 10. When the vehicle C is not loaded, that is, when the upper deck 20 is lowered and overlaps the lower deck 10, The strut 30 is configured to be able to fall down.

As is apparent from FIG. 2, the bracket 1 is attached to the I-shaped steel 11 forming both side edges of the lower deck 10.
2 are fixed, and the support shaft 31 fixed to the base end of each support 30 is rotatably supported by the bracket 12, so that each support 30 can swing.

As shown in FIG. 3, a column 30 is provided with a cylindrical column 34 fixed to one side of a channel steel 35 having a U-shaped cross section.
A hydraulic cylinder 50 is provided along the cylindrical column 34 on the other side, and a reinforcing frame 36 made of a steel strip is fixed to the lower outer surface of the channel steel 35. In particular, the support shaft 31 is fixed to the reinforcing frame 36, and the support shaft 31 is supported by the bracket 12. In addition, pillar 3
0, a series of slits 34a are formed in the longitudinal direction of the cylindrical column 34, and a guide shaft 38 is formed therein.
Are provided so as to be movable up and down.

The legs 21 (see FIG. 2) projecting downward on both sides of the upper deck 20 and the guide shaft 38 are connected by the connection shaft 22 passing through the slit 34a.
As a result, the upper deck 20 is erected on the opposing columns 30, 30. Thus, the columns 30 are in the upright state, and the upper deck 20 can be raised and lowered.

On the other hand, a receiving cylinder 13 is fixed below each column 30. This receiving cylinder 13 is similar to the cylindrical column 34,
A cylindrical body having a slit 13a formed in the longitudinal direction thereof and having a bottom surface 13b at a lower portion, and communicates with the cylindrical pillar 34 when the support 30 is in an upright state. When the upper deck 20 descends, the guide shaft 38 is introduced into the receiving cylinder 13, and when the guide shaft 38 descends in the receiving cylinder 13 and the upper deck 20 reaches the lower end, the support 3
0 is in a state where it can fall down as shown in FIG.

In particular, each of the columns 30 is supported so as to swing in the vehicle width direction a, and the support shafts 31 of the opposite columns 30, 30 support the columns 30 with respect to the lower deck 10. It is provided stepwise at intervals by the thickness (see FIG. 2).

As shown in FIG. 5, a concave groove 24 is formed in a row on the upper surface of the upper deck 20 in the vehicle width direction a. It is stored.

Therefore, as shown in FIG.
In the state where 0 has dropped and overlapped with the lower deck 10,
When the opposing struts 30, 30 are sequentially lowered inside in the vehicle width direction a, they are stored in the concave groove 24 of the upper deck 20 while being overlapped as shown by the solid line. At this time, the upper pillar 30 is stored in the concave groove 24 in the same horizontal plane as the deck surface, and the upper deck 20 is integrated with the lower deck 10 to obtain a generally stable flat floor surface. Become like In this state, various cargoes such as long steel materials can be easily loaded and unloaded from the side of the vehicle body on the deck surface. When the support 30 is lying down, the support shaft 31 is located on the lower side of the support 30.
(Left side in FIG. 2) first, and then the support shaft 3
Of course, 1 causes the column 30 (the right side in FIG. 2) on the upper side to fall down.

Next, as apparent from FIG. 6, a spline 41 directly connected to the hydraulic motor 40 is fitted into the support shaft 31 for supporting the column 30. Therefore, by transmitting the power of the hydraulic motor 40 to the support shaft 31 via the spline 41, the support 30 can be swung about the support shaft 31 as a fulcrum. It is to be noted that the operating oil of the hydraulic motor 40 is locked while the support 30 is in the upright state, and thus the support 30 is fixed.

As is apparent from FIG. 7, the telescopic rod 5 of the hydraulic cylinder 50 built in the column 30 is provided.
A pulley 60, which is a moving pulley, is fixed to 1 and the pulley 60 is fixed.
Is wound on the wire W. One end of the wire W is locked by a hook 25 protruding from the upper deck 20, and the other end is locked by a hook 37 protruding from the column 30.

Therefore, the telescopic rod 5 of the hydraulic cylinder 50
When the telescopic rod 1 is extended and retracted, one end of the wire W fixed to the hook 25 is displaced by twice the stroke of the telescopic rod 51, so that the upper deck 20 is moved up and down by a stroke that is twice the stroke of the telescopic rod 51. Can be done. The other end of the wire W may be any fixing portion as long as it is a fixing portion such as the column 30 or the cylinder portion 52 of the hydraulic cylinder 50.

Next, another embodiment of the present invention will be described with reference to FIGS.
It will be described based on. In FIG. 8, 230 is a support, 2
50 is a hydraulic cylinder.

As shown in the figure, a hydraulic cylinder 250 is attached to the support 230 via a pedestal 214 and a bracket 212.
Is fixed, and the base end of the hydraulic cylinder 250 is
4, and is swingably supported by a support shaft 231. Therefore, it can be said that the column 230 is also swingably supported by the support shaft 231. In particular, the support shaft 231 is
And is pivotally attached to the bracket 212. The bracket 212 is fixed to the inner surface of the I-shaped steel 211 (see FIG. 9) forming both side surfaces of the lower deck.

Thus, the support 230 and the hydraulic cylinder 25
Numeral 0 is swingably supported in the longitudinal direction b (see FIG. 1) of the lower deck, and swings in a range indicated by a solid line and an imaginary line in the figure. That is, the support column 230 and the hydraulic cylinder 25
A value of 0 means that it falls down along the inner surface of the I-shaped steel 211 and is stored.

Here, the swinging of the column 230 is performed by the cylinder 240 supported swingably by the I-shaped steel 211 of the lower deck.
This is performed by connecting a (hydraulic) rod to a protruding piece 254 protruding from the base end of the hydraulic cylinder 250, and extruding or retracting the protruding piece 254. When the support column 230 is upright, the operating oil of the cylinder 240 is locked to fix the support column 230. Of course, as other means for swinging the support column 230, a method in which the drive shaft of the hydraulic motor is connected to the support shaft 231 as in the above embodiment, a gear transmission method including a rack, a chain drive method, or the like may be employed. it can.

The column 230 has slits 2 in its longitudinal direction.
30a having a guide shaft 238 therein.
Are provided so as to be movable up and down. The guide shaft 238 and the leg 221 of the upper deck 220 are connected by a connecting shaft 222 passing through a slit 230a, and the upper deck 220 can be moved up and down with the support 230 standing upright.

On the other hand, a receiving cylinder 213 is fixed below the support column 230. The receiving cylinder 213 is a cylindrical body having a slit 213a in the longitudinal direction, has a bottom surface 213b, and is installed so that the column 230 is in an upright state and communicates with the column 230.

Then, the upper deck 220 is at the lower end and the guide shaft 238 is introduced into the receiving cylinder 213. At this time, the guide shaft 238 is received by the bottom surface 213b of the receiving cylinder 213, and the upper deck 220 is moved to the lower position. Will be retained. In this state, the column 230 can be laid down on the inner surface of the lower deck as shown in FIG.

The telescopic rod 25 of the hydraulic cylinder 250
A pulley 260, which is a moving pulley, is fixed to 1 similarly to the above embodiment, and a wire W 'is hung on this pulley 260. One end of the wire W ′ is fixed to a hook 225 of the upper deck 220, and the other end is a hook 237 protruding from the cylinder portion 252 of the hydraulic cylinder 250.
Fixed to However, the other end of the wire W ′ is
If it is a fixed portion such as the cylinder portion 252 of the hydraulic cylinder 250, the fixing portion may be arbitrary.

On the other hand, even in this embodiment, the upper deck 2
20 and the struts 230 are stored in a flat floor shape in the lower deck 210, so that various cargo can be loaded on the upper surface even when these are stored.

The embodiment of the present invention has been described above. As an elevating mechanism for elevating and lowering the upper deck, a rack is provided along with a column, and an elevating table is provided on a chain feed mechanism operated by a rocking motor or the like. There is also a means in which the elevator is fixed, the upper deck is locked and lifted by the lift, and the lift is held at a predetermined position by a rack. Further, the pulley as the elevating mechanism may be a sprocket, and the wire may be a chain.

[0039]

In the multipurpose cargo vehicle according to the first aspect of the present invention, after lowering the upper deck, the columns are turned down so that the columns facing the grooves of the upper deck can be stored in an overlapped state. In the multipurpose cargo vehicle according to the third aspect, after lowering the upper deck, the columns can be laid down so that the columns can be stored adjacent to the upper deck.

Therefore, when cargo such as a vehicle is not loaded, the upper deck and the struts are stored in the lower deck so that restrictions during traveling such as regulation of vehicle height are reduced and stability during traveling is improved. The effect is obtained.

Also, in the state where the upper deck and the support are stored, an excellent effect that various kinds of cargo can be loaded and unloaded from the upper and rear sides as well as from the left and right sides with respect to the upper deck. Play.

Further, according to the second and third aspects of the present invention, it is possible to smoothly raise and lower the upper deck, and to obtain an effect of improving the stability of the upper deck.

[Brief description of the drawings]

FIG. 1 is a perspective view of a multipurpose cargo vehicle showing an embodiment of the present invention.

FIG. 2 is a front view showing a cross section of a main part of the multipurpose cargo vehicle in the embodiment.

FIG. 3 is a perspective view showing a state in which a support is erected in the embodiment.

FIG. 4 is a perspective view of the embodiment, showing a state in which the columns are laid down.

FIG. 5 is a schematic side view of the multipurpose cargo vehicle in the embodiment.

FIG. 6 is a plan view showing a cross section of a main part of the multipurpose cargo vehicle in the embodiment.

FIG. 7 is a front view of the column showing the fixed state of the wire in the embodiment.

FIG. 8 is a side view of a main part of a multipurpose freight vehicle showing another embodiment of the present invention.

FIG. 9 is a perspective view showing a state in which a support is erected in the embodiment.

FIG. 10 is a perspective view showing a state in which the pillar is laid down in the embodiment.

FIG. 11 is a front view showing a cross section of a main part of the multipurpose cargo vehicle in the embodiment.

[Explanation of symbols]

 A Multipurpose cargo vehicle B Towing vehicle C Vehicle W, W 'Wire 10, 210 Lower deck 13, 213 Receiving cylinder 20, 220 Upper deck 22, 222 Connecting shaft 24 Groove 30, 230 Supporting column 31, 231 Supporting shaft 38, 238 Guide Shaft 50,250 Hydraulic cylinder 60,260 Pulley

Claims (4)

(57) [Claims] 1. A freight vehicle comprising: a plurality of columns standing upright so as to face both side edges of a lower deck capable of loading cargo; and an upper deck raised and lowered by a lifting mechanism provided on the columns. Each support is supported by a support shaft so as to be swingable in the vehicle width direction, and the support shaft of the support opposing in the vehicle width direction is provided stepwise with respect to the lower deck, and the upper surface of the upper deck is provided. Are formed with a series of concave grooves toward the vehicle width direction, and the upper deck is located at the lower end, and the struts opposed in the vehicle width direction are stored in a state of overlapping with the concave grooves. Multipurpose cargo vehicle. 2. A supporting column is provided with a guide shaft connected to an upper deck so as to be able to move up and down, and below the supporting column is provided a receiving cylinder in which the upper deck is at a lower end and the guide shaft is introduced. The multipurpose cargo vehicle according to claim 1, wherein the receiving cylinder has a bottom surface for receiving the guide shaft. 3. A freight vehicle comprising: a plurality of columns standing upright so as to face both side edges of a lower deck capable of loading cargo; and an upper deck raised and lowered by a lifting mechanism provided on the columns. Each support is supported by a support shaft so as to be swingable with respect to the longitudinal direction of the lower deck, and each support is provided with a guide shaft connected to the upper deck so as to be able to move up and down. Is provided with a receiving cylinder in which the upper deck is at the lower end and the guide shaft is introduced, and the receiving cylinder has a bottom surface for receiving the guide shaft, and the guide shaft is received by the bottom surface. A multipurpose cargo vehicle, wherein each strut is capable of falling along the longitudinal direction of a lower deck. 4. A lifting mechanism, comprising: a hydraulic cylinder fixed to a support, a pulley provided at the tip of a telescopic rod of the hydraulic cylinder, and one end fixed to the upper deck and the other end connected to the pulley. The multipurpose cargo vehicle according to claim 1, wherein the multipurpose cargo vehicle includes a wire that is fixed to a fixing portion including the support via a wire.