JPH0138009B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a freight transport vehicle with fully open sides, and in particular, the raising and lowering of the roof and the rotation of the wings are performed in conjunction with each other, and the rotation of the wings only is performed. The present invention relates to a cargo transport vehicle that allows cargo to be loaded and unloaded extremely easily.

Conventionally, freight transport vehicles have been proposed in which the side walls of the vehicle are made into wings that can rotate in the vertical direction, and the sides can be opened when loading and unloading cargo. No. Publication, Actual Publication 1977
-12807, Utility Model Application Publication No. 52-59321, etc., disclose various types. However, in those conventional structures, only the wings can be rotated, and the roof still maintains its original height.
When loading and unloading cargo using a forklift, etc., the cargo gets stuck on the cross beams of the roof, making effective cargo handling difficult, and the space between the cargo and the roof is inevitably reduced. It became necessary to take a large
This was an obstacle to efficient transportation.

On the other hand, in Japanese Utility Model Application Publication No. 52-68508, a drum mechanism with hydraulic cylinders installed on the front and rear walls of the cargo hold is installed, and the roof is lifted up and the upper side walls are opened by hydraulic drive. A structure has been proposed in which this is carried out in conjunction with the above. This has the advantage that the ceiling will not be an obstacle during cargo handling and sufficient loading will be possible, but a hydraulic cylinder and link mechanism will be required, and the roof and the upper part of the side walls will be linked as separate bodies. As a result, the link mechanism becomes complicated, and the members for supporting both require sufficient strength, which has the inherent disadvantage that an increase in weight and manufacturing cost is inevitable. It was.

Moreover, according to such a structure, since the lifting of the roof and the opening of the upper part of the side walls are linked, there is an inherent problem that raising only the roof or opening only the upper part of the side walls cannot be carried out selectively. -ing

Here, the present invention has been made in view of such circumstances, and its purpose is to:
To provide a freight transport vehicle with fully-open sides that can perform the lifting and lowering of the roof in conjunction with the opening of the sides by wings, and can also perform these operations alternatively. .

In order to achieve this object, the cargo transport vehicle according to the present invention includes (a) arch sections located at the front and rear of the cargo compartment, and a connecting section that connects them and constitutes at least a part of the roof section. (b) a sliding arch that is movable up and down; (c) a wing for opening and closing at least the side portion; and (c) a wing for raising and lowering the sliding arch and rotating the wing, the wing being attached to each leg of the arch portion of the sliding arch in the vertical direction. (d) a removable actuation conversion means that prevents the downward extension of the driving means and converts the extending action into an upward action of the sliding arch; (e)
a drum mechanism that is rotatable around one axis and that rotates the wing in the vertical direction by the rotational movement; (f) one end is wrapped around and fixed to the drum mechanism; A tensioning member attached to the telescoping portion of the driving means and applying a tensile force to the drum mechanism by a relative extension action of the telescoping portion with respect to the arch leg of the sliding arch, thereby causing the drum mechanism to rotate. The device is characterized in that it is configured to include a force transmitting member.

Thus, according to the present invention, the expansion/contraction operation of the drive means is transmitted to the sliding arch and the wing via the detachable operation conversion means, and by attaching and detaching the operation conversion means, Since the raising operation of the sliding arch is controlled, raising the sliding arch, rotating the wing, and rotating the wing only (the sliding arch does not rise) can be selectively performed. This made it possible to load and unload cargo extremely easily, reliably, and completely. Moreover, according to the present invention, since the tensile force transmitting member that transmits the tensile force of the driving means is wound around the drum mechanism and the tensile force is applied to the drum mechanism, the rotation of the drum mechanism is As a result, the wings can be rotated effectively, and the wings can be easily rotated, in other words, the sides can be opened easily.

Further, in the present invention, a plurality of locking portions are provided on the outer peripheral portion of the drum mechanism at appropriate intervals in the circumferential direction, and the locking portions can be engaged with the locking portions by rotation. Further, a stopper means is provided which is rotated so as to be released from engagement with the locking portion by interference of a tensile force transmitting member that applies a tensile force to the drum mechanism, and further the stopper means is connected to the drum mechanism. A spring means is provided for urging the mechanism to rotate toward the locking portion and to engage with the locking portion, and when the tensile force transmitting member loses the tensile force, the spring means rotates the stopper means. By engaging with the locking portion of the drum mechanism, the rotation of the drum mechanism is prevented and the rotation of the wing is stopped, so that the wing is fixed at a predetermined open position. This has the advantage that cargo can be loaded and unloaded in any open state, and it also functions effectively as a safety device against downward rotation of the wing. It was.

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to clarify the present invention more specifically, embodiments of a fully-open side cargo transport vehicle according to the present invention will be described in detail below with reference to the drawings.

First, Fig. 1 is a perspective view from the rear of a cargo hold formed on the loading platform of a truck, trailer, etc., in which 2 covers the upper part of one side wall of the cargo hold and also covers a part of the roof. It is an L-shaped wing configured to form an It is mounted so as to be rotatable in the vertical direction. Further, the front and rear ends of the beam 4 are fixed to the arch portion 6 of the portal frame, as shown in FIG. 2, and constitute a sliding arch 8 as a whole. The legs 10 of the arch portion 6 of this sliding arch 8 are connected to hollow rectangular pillars 12 erected at the four corners of the loading platform.
The sliding arches 8 are respectively slidably fitted in the inner parts, and the sliding arches 8 are supported so as to be movable up and down.

Furthermore, as shown in FIG. 3, a cylinder 14 is attached to the lower part of the leg part 10 of the arch part 6 of the sliding arch 8, and the tip of the piston rod 16 of the cylinder 14 extends and contracts. The known ratchet buckle 1
8 is attached.

And as shown in Figures 2 and 3,
On the side where wing 2 is attached to beam 4,
While a fan-shaped drum 20 is fixedly installed, a turret 22 is provided at each shoulder of the arch part 6 of the sliding arch 8, and a pulley 24 is rotatably disposed there. A tensioning member 30, which is a tensioning force transmitting member formed by connecting the wire 26 and the belt 28, is locked to the drum 20 by a pin 32 at its end on the wire 26 side and is wound around the drum 20. Belt 2
8 is removably attached to a ratchet buckle 18. Further, an extension preventing member 34 as an operation switching means is disposed below the ratchet buckle 18 and is removably attached to and fixed in position with respect to the support column 12. , the piston rod 1
When the sliding arch 6 is extended, its downward extension is prevented and the sliding arch 8 is moved upward.

In addition, the wing 2 adopts a known structure such as a canopy sheet or a panel.
For example, in the case of a hood sheet covering structure, the hood sheet is hung on the wing frame so as to cover both sides of the cargo compartment and the roof, and at the lower end of the side, for example, the side tilting position shown in FIG. 36 or the like. In addition, in FIG. 1, numeral 38 is a tilt flap provided at the rear of the cargo compartment.

Therefore, in the case of a freight transport vehicle having a cargo compartment having such a structure, from the state where the cargo compartment is covered by the wing 2 shown in FIG. cylinder 14
By activating , various side opening states can be achieved as shown in FIGS. 5 to 9.

That is, when the extension preventing member 34 is attached to the column 12 to prevent the downward extension of the piston rod 16 of the cylinder 14, as shown in FIG. The lifting operation of the sliding arch 8 generates a tensile force in the tension member 30, causing the drum 20 to rotate with respect to the beam 4. The wing 2 is then rotated upward to open the side of the cargo compartment. In other words, sliding arch 8
The wings 2 can be opened at the same time as the (roof member) is raised.

Further, an extension preventing member 34 is attached to the support column 12 to prevent the piston rod 16 of the cylinder 14 from extending downward, and to prevent the piston rod 16 from extending downwardly.
Ratchet buckle 1 attached to the tip of
8 is in the unlocked state and the end of the belt 28 of the tension member 30 is released, in other words, even if the cylinder 14 is actuated and the sliding arch 8 is raised, no tensile force is generated in the tension member 30. In this case, as shown in FIG. 6, the wing 2 cannot be opened, and only the sliding arch 8 can be raised.

Furthermore, in the case where only the wing 2 is to be opened without raising the sliding arch 8, as shown in FIG. The blocking member 34 is now removed. By removing the extension blocking member 34, the piston rod 16 extends downward due to the drive of the cylinder 14, and this downward extension applies a tensile force to the tension member 30 fixed to the ratchet buckle 18. will occur,
By rotating the drum 20, the wing 2 can be rotated upward and the cargo compartment side can be opened.

In addition, in the previous operation modes, each leg 1 of the arch section 6 provided at the front and rear of the cargo compartment
The operation mode of the wing 2 by the cylinder 10 provided at Although the movements of wings 2 are the same, it is also possible to simply open only one wing 2, an example of which is shown in Figure 8.
It is shown in FIG.

That is, FIG. 8 shows the operating mode in FIG. 5 and the operating mode in FIG. 6.
This is a combination of the operation modes shown in the figure, and is configured such that expansion prevention members 34 are attached to the left and right columns 12, respectively, and the drive of the cylinder 14 is converted to the upward movement of the sliding arch 8. At the same time, one tension member 30 is locked to the ratchet buckle 18, and the other tension member 30 is unlocked from the ratchet buckle 18, so as the sliding arch 8 rises, one of the tension members 30 Since a tensile force is generated in one tension member 32 and no tensile force is generated in the other tension member 30, only one wing 2 is opened as shown.

Further, in FIG. 9, the extension blocking member 34 on the side where the cylinder 14 is actuated is removed, and only the cylinder 14 on one side is actuated, so that the tension member is inserted through the ratchet buckle 18. A tensile force is generated in the wing 30, thereby opening only one wing 2. At this time, the other cylinder 10 is not driven in any way, and the sliding arch 8
will never rise. This configuration is the same as the configuration in which the cylinder 10 in FIG.
This is a combination of the wing open configuration shown in the figure.

In this way, by adopting the structure shown in FIGS. 1 to 3, the sliding arch 8
It is now possible to take various forms in which the raising operation of the roof (roof) and the opening operation of the wing 2 are combined in various ways, so that the opening form of the wing 2 can be appropriately selected depending on the surrounding situation. This made it possible to easily load and unload cargo without being restricted to a cargo handling area. Further, according to the structure of the above example, the wire 26 portion of the tension member 30 is wound around the outer circumference of the drum 20 and its tip end is fixed, so that the tension caused by the extension operation of the cylinder 10 is Since the tensile force of the member 30 provides an effective rotational force to the drum 20, the wing 2 can be easily rotated upward, and the opening operation thereof can be smoothly performed. -ing

Further, the rotation mechanism for the wing 2 provided at the attachment portion of the wing 2 to the beam 4 is shown enlarged in FIGS. 10 and 11, in which the drum 20 is Protrusions 40 of a predetermined length are provided on both outer surfaces of the outer circumference so as to extend in the radial direction of the fan shape at predetermined intervals, and protrusions 40 are provided on the arch portion 6 of the sliding arch 8. A predetermined stopper member 42 is rotatably attached to the bevel 22.
A spring 44 is stretched between the tip of the stopper member 42 and the beam 4, and is biased to draw the stopper member 42 toward the drum 20.
The wire 26 of the tensioning member 30 is brought into contact with the pin portion 46 provided at the tip of the drum 2 to interfere with the wire 26, and when a tension force is applied to the tensioning member 30, the wire 26 resists the urging force of the spring 44 against the drum 20 It is configured to rotate so as to move away from each other.

Therefore, in such a rotation mechanism, when a tensile force is applied to the tension member 30 and the wire 26 is pulled, an effective rotation action is induced on the drum 20, and the wing 2 is rotated. The first
The situation will be as shown in Figure 2. At this time, the pin portion 46 at the tip of the stopper member 42 is rotated in a direction away from the drum 20 due to the interference of the wire 26 against the biasing force of the spring 44. Therefore, no engagement occurs between the projection 40 on the outer periphery of the stopper member 42 and the stopper member 42.

However, in a state where the wing 2 is rotated to open the side of the cargo compartment as shown in FIG. 12, if the tension force acting on the tension member 30 disappears, that is, 44, the stopper member 42 is rotated toward the drum 20 in response to the downward rotation of the wing 2, and the tip of the stopper member 42 is rotated toward the drum 20. A protrusion 40 provided on the outer periphery of the drum 20 at the
As shown in FIG. 13, rotation of the drum 20 is prevented by the stopper member 42, thereby preventing rotation of the wing 2. It is.

In this way, a plurality of protrusions (locking parts) are provided on the outer circumference of the drum 20 at appropriate intervals in the circumferential direction.
40, and a stopper member 42 that can engage with the protrusion 40 when no tensile force is applied to the tension member 30. This prevents any accident when the wing 2 is in the open state. Therefore, even if no tensile force is applied to the tension member 30, accidents caused by sudden downward rotation of the wing 2 can be effectively prevented. Therefore, it can be advantageously employed as a safety device when the wing 2 is opened. Also,
Such a stopper member 42 has a plurality of protrusions 40
Since it can engage with any of the protrusions 4 to be engaged with,
By selecting the 0 position, the amount of rotation of the drum 20, in other words, the amount of opening of the wing 2 can be regulated, so it can also be used as a means for regulating the degree of opening of the side of the cargo compartment by the wing 2. It is possible to use. In order to engage the stopper member 42 and the protrusion 40 at such an arbitrary position, in order to reduce or eliminate the tensile force applied to the tension member 30, the weight of the wing 2 is applied around the hinge 48. An operation that temporarily prevents rotation (lifting) using appropriate means will be adopted.

Note that in the structure of the above example, the drum 20 is fixed to the wing, but the present invention is not limited to this in any way, and the drum 20 is fixed to the wing 2 by using a drum mechanism that is not fixed to the wing 2. There is no problem even if the rotational force is applied to the rotational force, an example of which is shown in FIG. 14. That is, in FIG. 14, the pivot member 50 is attached to the hinge 52 at one end with respect to the beam 4 so as to be located below the wing 2.
The drum 20 similar to the previous example is fixed to the lower part of the rotating member 50. Further, a pulley 54 is rotatably provided at the other end of the rotary member 50, and this pulley 54 is connected to the wing 2.
It is in contact with the bottom surface of. Therefore, a tensile force is applied to the wire 26 of the tensioning member 30 and the drum 2
0 is rotated, and the rotating member 50 is connected to the hinge 5.
When the wing 2 is rotated around the hinge 48, the wing 2 is pushed up by the pulley 54 at the other end of the rotary member 50, and the wing 2 is rotated around the hinge 48. The side of the cargo hold will then be opened.

Further, FIG. 15 shows another example of a drum used as a drum mechanism in the present invention and a locking portion provided on the outer periphery thereof. Here, a plurality of notches 58 different from the plurality of protrusions 40 as in the previous example are provided on the outer circumference of the drum 56 as a drum mechanism, and the pin portion 46 of the stopper member 42 is inserted into the notch 58. By engaging, the rotation of the drum 56 and, by extension, the rotation of the wing 2 is prevented.

Furthermore, in the above example, the left and right wings 2 are rotatably attached to the beam 4 located in the front and back direction at approximately the center of the top of the sliding arch 8; Instead, as is known, the width of the beam 4 is widened, and each wing 2 is
It is also possible to reduce the number of parts constituting the roof, or conversely, as in the above example, instead of the beam 4 member constituting a part of the roof, it is possible to simply use the wing 2.
It is also possible to construct a structure in which only the rotation shaft for rotating the cargo compartment is spanned in the front-rear direction over the arch section 6 located at the front and rear of the cargo compartment, and only this rotation shaft becomes a part of the roof section. .

In addition, it goes without saying that various modifications and improvements can be made to the present invention based on the knowledge of those skilled in the art without departing from the spirit thereof.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an example of a cargo compartment of a side-opening cargo transport vehicle according to the present invention, and FIG. 2 is a perspective explanatory view showing a rotating mechanism of a wing provided at the rear end. , FIG. 3 is a half-sectional explanatory view of the part where the arch part of the sliding arch is located, and FIGS. 4 to 9 are cross-sectional explanatory views showing different operating states of the wing and the sliding arch, respectively. Fig. 4 shows the wing closed and the sliding arch lowered, Fig. 5 shows the wing opened and the sliding arch raised, and Fig. 6 shows the sliding arch only raised. Figure 7 is a diagram showing a state in which only the wing is open, Figure 8 is a diagram showing the rising of the sliding arch and a state in which only one wing is open, and Figure 9 is a diagram showing a state in which only one wing is open. FIG. 10 is a diagram corresponding to FIG. 3 showing an enlarged view of the wing rotating part of such a freight transport vehicle, and FIG.
Fig. 2 corresponds to Fig. 10 showing the wing in an open state, and Fig. 13 corresponds to Fig. 10 showing a state in which the wing is prevented from rotating downward by the stopper member preventing rotation of the drum. FIG. 14 is a diagram corresponding to FIG. 10 showing another example of the mounting form of the drum, and FIG. 15 is a diagram corresponding to FIG. 10 showing another example of the locking part provided on the drum. FIG. 2: Wing, 4: Beam (beam member), 6: Arch, 8: Sliding arch, 10: Leg, 12: Strut, 14: Cylinder, 16: Piston rod, 18: Ratchet buckle, 20: Drum , 26: wire, 28: belt, 30: tension member, 32: pin, 34: extension prevention member, 40:
projection, 42: stopper member, 44: spring,
48, 52: Hinge, 50: Rotating member.

Claims (1)

[Scope of Claims] 1. A sliding arch that can be raised and lowered and has arch parts located at the front and rear of a cargo compartment and a connecting part that connects them and constitutes at least a part of the roof part; a wing which is attached so as to be rotatable in the vertical direction and constitutes at least a side wall portion of the cargo compartment, and whose rotation opens and closes at least the side portion of the cargo compartment; and an arch portion of the sliding arch. A drive means attached to each leg and extendable in the vertical direction for raising and lowering the sliding arch and rotating the wing; a removable operation conversion means for converting an extension operation into a raising operation of the sliding arch; and a drum mechanism rotatably provided around one axis and for rotating the wing in the vertical direction by the rotational movement. , one end side is wrapped around and fixed to the drum mechanism, while the other end side is attached to the telescoping part of the driving means, and the telescoping part is extended relative to the arch leg of the sliding arch. A fully-open side cargo transport vehicle, comprising: a tensile force transmitting member that applies a tensile force to the drum mechanism to rotate the drum mechanism. 2. A patent in which the drum mechanism is a fan-shaped drum fixed to a portion of the wing on the sliding arch attachment side, and the rotational axis of the drum is aligned with the rotational axis of the wing. A freight transport vehicle according to claim 1. 3. A plurality of locking portions are provided on the outer periphery of the drum mechanism at appropriate intervals in the circumferential direction, and the drum mechanism is capable of engaging with the locking portions by rotation and applying a tensile force to the drum mechanism. providing a stopper means that is rotated so as to be released from engagement with the locking portion by interference of the tensile force transmitting member being applied, and further rotates the stopper means toward the drum mechanism; A spring means is provided for urging the stopper means to engage with the locking portion of the drum mechanism, and the spring means engages the stopper means with the locking portion of the drum mechanism when the tensile force transmitting member loses the tensile force. 3. The freight transport vehicle according to claim 1, wherein the drum mechanism is prevented from rotating and the wings are stopped from rotating by being brought together. 4. The freight transport vehicle according to any one of claims 1 to 3, wherein the tensile force transmission member is removably attached to the telescopic portion of the drive means.