JP2003128265A - Extending device for cargo vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate necessity of providing a slope for a cargo vehicle to go up/down at a platform of a warehouse or the like. SOLUTION: This extending device 1 for a cargo vehicle has a floor board 2 of the width which the cargo vehicle can pass. The floor board 2 is mounted on a platform 11 with movability in vertical direction so that its tip end can be lowered to a ground 14 with the base end as the fulcrum. At the tip end of the floor board 2, a projecting member 6 is provided, supported by a deck of a truck arriving at/leaving from the platform 11 and the ground. Below the floor board 2, and elevation driving device 3 is arranged for elevating the tip end of the floor board 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loading and unloading apparatus for loading and unloading a truck, and more particularly, the present invention relates to a forklift such as a forklift between a platform such as a warehouse where trucks are loaded and unloaded and a truck carrier. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handling vehicle passing device for enabling a cargo vehicle to reciprocate.

[0002]

2. Description of the Related Art As shown in FIG. 8, a conventional warehouse is provided with a platform 103 on which a plurality of trucks 100 can land. The platform 103 is used to load and unload loads on the loading platform 101 of the truck 100. Platform 103
In the vehicle, a plurality of delivery devices 105 for a cargo handling vehicle, which are placed between the truck 100 and the loading platform 101, are installed. In addition, a cargo truck 106 such as a forklift is mounted on the same platform 103 as the platform 103.
The slope 104 for going up and down is formed.

Each bridging device 105 is provided with a floor plate 110 having a width that allows the cargo truck 106 to pass therethrough. The floor plate 110 is supported on the base end side so that the front end side can be raised and lowered. A projecting member 111 supported on the luggage carrier 101 of the truck 100 is provided at the tip of the floor plate 110 so as to be bendable.

When loading and unloading is not performed, FIG.
As shown in (1), the floor plate 110 is held in a horizontal posture, and the protruding member 111 is bent downward to be in a closed state. In this state, since the top surfaces of the platform 103 and the floor board 110 are on the same plane, the cargo handling vehicle 1 is placed on the floor board 110 of the platform 103.
06 can run.

When loading and unloading a load, as shown in FIG. 9 (2), the tip end side of the floor plate 110 is raised in accordance with the height of the loading platform 101 of the truck 100, and the projecting member 111 is projected forward. Let ’s load the truck 100 on the bed 1
01 on top. Since the cargo vehicle 106 can reciprocate between the platform 103 and the cargo bed 101 of the truck 100 by the floor plate 110, the cargo truck 106 can load and unload the cargo on the cargo bed 101.

When loading and unloading a load, the cargo handling vehicle 106 reciprocates between the platform 103 and the loading platform 101 of the truck 100.
If you go down to, you can work on the ground 107.

[0007]

In the above warehouse, there is no problem as long as the platform 103 has a space for installing a large number of transfer devices 105.
For the platform 103 where the installation space of the spanning device 105 is not sufficient, the slope 104 described above is used.
The installation number of the transfer device 105 is reduced by at least one unit, and as a result, the number of trucks that can be stopped at the same time is also reduced, so that the loading and unloading efficiency becomes low.

The present invention has been made in view of the above-mentioned problems. It is not necessary to provide a slope for a cargo truck to go up and down on a platform such as a warehouse, so that a handling device for a cargo truck can be provided. The purpose is to increase the number of installed units and improve the loading and unloading efficiency.

[0009]

A delivery device for a cargo vehicle according to the present invention has a floor plate having a width that allows the cargo vehicle to pass therethrough. The floor plate is attached to the platform so as to be able to move up and down so that the tip end side can descend to the ground with the base end side as a fulcrum. At the tip of the floor plate, there is provided a protruding member that is supported on the bed or the ground of a truck that arrives and departs from the platform. Below the floor plate, a lifting drive device for lifting the tip side of the floor plate is provided.

There are various possible embodiments of the lifting drive device, one of which is a hydraulic cylinder, which is supported in a state of being inclined toward the base end side of the floor plate.

In a preferred embodiment of the present invention, below the floor plate, a supporting base capable of supporting the floor plate from below is supported so as to be capable of undulating so as to be able to fall to the base end side of the floor plate. In addition, a drive mechanism for raising and lowering the support is connected to the support.

The projecting member is provided so as to be retractable at the tip portion of the floor plate or bendable at the tip portion of the floor plate.

[0013]

[Operation] When loading and unloading a load on the truck bed, the elevating drive device is driven to move the tip side of the floor board up and down to match the height of the truck bed, and the projecting member at the tip of the floor board is placed on the truck bed. Make it support above. As a result, the cargo vehicle can reciprocate between the platform and the truck bed through the floor plate, and the cargo truck can load and unload the truck bed.

When the cargo vehicle goes up and down the platform, the elevating drive device is driven to lower the tip side of the floor plate to support the projecting member on the ground. This allows the cargo vehicle to move freely between the platform and the ground through the floorboard.

In one embodiment of the present invention, since the hydraulic cylinder as the lifting drive device is supported in a state of being inclined toward the base end side of the floor plate, the hydraulic cylinder is moved toward the base end side of the floor plate as the tip end side of the floor plate descends. Fall down. As a result, the hydraulic cylinder does not hinder the lowering of the tip of the floor plate, and can lower the tip side of the floor plate until the protruding member contacts the ground.

According to one embodiment of the present invention, a support base capable of supporting the floor plate from below is supported below the floor plate so that it can be raised and lowered. The weight of the car can be supported by the pedestal. When the floorboard is hung on the ground, etc., the drive mechanism can be driven to tilt the support base to the base end side of the floorboard, so the support base does not prevent the tip side of the floorboard from descending and does not project. The tip side of the floorboard can be lowered until the member contacts the ground.

In a preferred embodiment, the projecting member is provided at the tip of the floor plate so as to be retractable or bendable, so that when loading and unloading a load on a truck bed or when a platform is lifted by a cargo truck. At the time of descending, the projecting member is projected to be supported on the truck bed or on the ground, but at other times, the projecting member can be retracted or bent and stored.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a warehouse 1 in which a plurality of delivery apparatuses 1 for cargo handling vehicles according to an embodiment of the present invention are installed.
The situation is 0. The illustrated warehouse 10 has a platform 11 on which a plurality of trucks 9 can arrive and depart.
The platform 11 is provided with four delivery devices 1 for cargo handling vehicles. Installation location of each transfer device 1 (hereinafter referred to as "station") S1
Up to S4, the trucks 9 can be stopped at the same time, and all trucks 9 can be loaded and unloaded simultaneously. In addition,
Unlike the conventional example shown in FIG. 9, the platform 11 is not provided with a slope for the cargo truck 13 to go up and down.

Each of the stations S1 to S4 is constructed by installing the bridging device 1 in the recesses 12 of the upper surface and the front opening formed at equal intervals on the platform 11, respectively. A floorboard 2 that constitutes the device 1 is installed. The floor plate 2 is attached to the platform 11 so as to be able to move up and down so that the tip end side can descend onto the ground 14 with the base end side as a fulcrum.
When the floorboard 2 is in a horizontal posture, the upper surface of the floorboard 2 and the upper surface of the platform 11 are flush with each other so that no step is generated. You can drive.

The floor plate 2 has a width d through which the cargo handling vehicle 13 can pass, and by hanging the floor plate 2 on the load carrier 9a of the truck 9, the platform 11 and the load carrier 9a can be moved.
The cargo handling vehicle 13 can move back and forth between
It is possible to load and unload loads according to 3. In addition, by hanging the floorboard 2 on the ground 14, the platform 1
The cargo handling vehicle 13 can go up and down 1.

As shown in FIGS. 2 and 3, each spanning device 1 includes the above-mentioned floor plate 2, a pair of left and right elevating and lowering drive devices 3 and 3 for vertically moving the front end side of the floor plate 2, and the floor plate 2. Includes a pair of left and right support bases 4 and 4 capable of supporting a substantially central portion of the base from below, and a pair of left and right drive mechanisms 5 and 5 for raising and lowering each support base 4. The two elevating and lowering drive devices 3, the two support bases 4, and the two drive mechanisms 5 are installed in the recess 12 below the floor plate 2, respectively.

As shown in FIGS. 4 and 5, the floor plate 2 is formed by integrating a plurality of reinforcing frame members 21 made of C-shaped steel on the lower surface of a metal plate member 20, and at both ends and the center. A guide member 22 made of synthetic resin is attached to the reinforcing frame member 21 located in the section.

At the tip of the floor plate 2, a projecting member 6 is mounted so that it can be retracted from the loading platform 9a of the truck 9 or the ground 14, and the projecting member 6 is mounted on the lower surface of the floor plate 2. A reciprocating mechanism 7 for attaching and retracting from the tip of the is attached. In this embodiment, the reciprocating mechanism 7 is configured by using a hydraulic cylinder, but not limited to this, a pinion gear is attached to a motor as a drive source, and a rack gear provided with a protruding member is meshed with the pinion gear. You may use the thing of a different structure.

The protruding member 6 is a plate made of a slide member 60 formed by integrally combining a plurality of frame members 61 made of I-shaped steel, and a metal plate integrally attached to the tip of the slide member 60. The slide member 60 is connected to the rod 7a of the hydraulic cylinder that constitutes the reciprocating mechanism 7. The frame member 61 at both ends and the center of the slide member 60 is supported by the guide member 22 so as to freely slide back and forth. Comb-shaped metal plate 6 on all frame members 61
3 is integrally attached, and when the entire projecting member 6 projects from the tip portion of the floor plate 2, the plate member 20 of the floor plate 2, the plate member 63 of the slide member 60, and the plate member 62 are continuous.

The projecting member 6 having the above-described structure is in a state where the whole is retracted to the lower surface of the floor plate 2 in the normal state (the state shown in FIG. 2), but when the floor plate 2 is hung on the bed 9a of the truck 9, As shown in FIG. 6, the plate-shaped member 62 of the projecting member 6 projects from the tip of the floor plate 2, and the tip of the plate-shaped member 62 is supported on the luggage carrier 9a. Further, when the floor plate 2 is bridged over the ground 14, as shown in FIG. 7, the slide member 60 and the plate member 62 of the member 6 project from the tip end portion of the floor plate 2, and the tip end of the plate member 62 is It is supported on the ground 14.

The floor plate 2 is supported by the upper ends of a pair of left and right column members 23 vertically installed in the recess 12 at the base end serving as a fulcrum, and both side positions of the length center are below the floor plate 2. It is supported by the left and right elevating and lowering drive devices 3, 3 respectively installed in the. In this embodiment, each lifting drive device 3
As the hydraulic cylinder, a base end portion of the hydraulic cylinder is swingably supported by a base plate 31 installed on the ground 14, and a tip end of the rod 3a is connected to a bottom face of the floor plate 2 close to the base end portion. By doing so, each lifting drive device 3 is installed in a state of being inclined toward the base end side of the floor plate 2. According to such an installation method, each lifting drive device 3 has the floor plate 2
Since the tip end side of the floor plate 2 falls down toward the base end side of the floor plate 2, each elevating drive device 3 does not prevent the tip end portion of the floor plate 2 from descending, and the tip end of the protruding member 6 touches the ground surface 14 until the tip end of the floor plate 2 comes into contact. The tip side of can be lowered.

A pair of left and right supports 4 and 4 for supporting the lower surface of the floor plate 2 from below when the floor plate 2 is in a horizontal posture are installed at both sides of the center of the length of the recessed portion 12. Each pedestal 4 is supported on the substrate 31 so as to be able to rise and fall so as to be able to fall to the base end side of the floor plate 2.
Each pedestal 4 moves up and down by driving a pair of left and right drive mechanisms 5. Each drive mechanism 5 is composed of a hydraulic cylinder, and the rod 5a of each cylinder is connected to each support 4 via the connecting member 51, and the support 4 is raised and lowered by the reciprocating motion of the rod 5a.

Since each drive mechanism 5 is installed on the base end side of the floor plate 2 with respect to the support base 4, and each support base 4, 4 is tilted toward the base end side of the floor plate 2, the support base 4 The drive mechanism 5 does not prevent the tip side of the floor plate 2 from descending,
The tip side of the floor plate 2 can be lowered until the tip of the protruding member 6 contacts the ground 14.

Next, the operation of the bridging device 1 having the above-described structure will be described. First, when the load is not unloaded, the floor plate 2 is held in a horizontal posture, and the protruding member 6 is placed on the lower surface of the floor plate 2. It is evacuating. In this state, since the upper surface of the floor plate 2 is flush with the upper surface of the platform 11, there is no step and the traveling of the cargo vehicle 13 is not hindered. Further, since the floor plate 2 is supported from below by the supporting bases 4 and 4, even if the cargo handling vehicle 13 passes over the floor plate 2, the load of the cargo handling car 13 is supported by the supporting bases 4 and 4.

Next, when loading and unloading loads on the loading platform 9a of the truck 9, only the plate-like member 62 of the projecting member 6 is projected from the front end of the floor plate 2 and the left and right lifting drive devices 3, 3 are arranged. The tip side of the floor plate 2 is driven to rise, and the plate member 62 of the projecting member 6 is supported on the luggage carrier 9a at a position corresponding to the height of the luggage carrier 9a (state shown in FIG. 6). As a result, the cargo handling vehicle 13 can reciprocate between the platform 11 and the loading platform 9a of the truck 9 through the floor plate 2, and the cargo handling vehicle 13 can load and unload loads.

Next, the cargo truck 13 is mounted on the platform 1
When going up and down 3, the slide member 60 of the projecting member 6 and the plate member 62 are projected from the tip of the floor plate 2, and the left and right lifting drive devices 3 are driven to drive the floor plate 2.
The tip end side of the plate member 62 of the protruding member 6 is lowered.
Are supported on the ground 14 (state shown in FIG. 7). This allows the cargo vehicle 13 to move freely between the platform 11 and the ground 14 through the floorboard 2.

In the above embodiment, the projecting member 6 is provided at the tip of the floor plate 2 so as to be retractable, but it may be flexibly attached to the tip of the floor plate 2. In this case, the projecting member 6 is used for loading and unloading the load or the platform 1
Except when the cargo vehicle 13 goes up and down, 1 is bent and stored so as not to project to the front of the platform 11.

[0033]

According to the present invention, since the elevating drive device is driven so that the front end side of the floor plate can be lowered to the ground, a slope for a cargo truck to go up and down is provided on a platform such as a warehouse. There is no need, and it is possible to improve the loading and unloading efficiency of the cargo by increasing the number of installations of the delivery device for the cargo handling vehicle.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state of a warehouse in which a delivery device for a cargo handling vehicle according to an embodiment of the present invention is installed.

FIG. 2 is a side view showing a configuration of a delivery device for a cargo handling vehicle according to an embodiment of the present invention.

FIG. 3 is a view showing the configuration of the floor plate as viewed from below the floor plate.

4 is a sectional view taken along the line AA of FIG.

5 is a cross-sectional view taken along the line BB of FIG.

FIG. 6 is a side view of the delivery device in a state where the floorboard is attached to the bed of the truck.

FIG. 7 is a side view of the spanning device in a state where the floor plate is spanned on the ground.

FIG. 8 is a perspective view showing a situation of a warehouse in which a conventional bridging device is introduced.

FIG. 9 is an explanatory diagram showing a situation of loading and unloading a load by a cargo handling vehicle.

[Explanation of symbols] 1 hand-over device 2 floor boards 3 lifting drive 4 support 5 Drive mechanism 6 Projection member 9 tracks 9a loading platform 11 platforms 13 cargo truck

Claims (5)

[Claims] 1. A floor board having a width allowing passage of a cargo vehicle,
The floor plate is attached to the platform so that the tip side can be lowered to the ground with the base end side as a fulcrum, and the tip part of the floor plate is supported on the bed or the ground of a truck that is attached to and detached from the platform. A loading and unloading device for a cargo handling vehicle, which is provided with a projecting member, and below the floor plate, an elevating drive device for elevating the tip side of the floor plate is arranged. 2. The passing device for a cargo handling vehicle according to claim 1, wherein the lifting drive device is a hydraulic cylinder and is supported in a state of being inclined toward a base end side of the floor plate. 3. A support base, which is capable of supporting the floor plate from below, is movably supported below the floor plate so as to be able to fall toward the base end side of the floor plate. The delivery device for a cargo handling vehicle according to claim 1, wherein a driving mechanism for raising and lowering the support base is linked. 4. The passing device for a cargo handling vehicle according to claim 1, wherein the projecting member is provided so as to be retractable at a tip portion of the floor plate. 5. The delivery device for a cargo handling vehicle according to claim 1, wherein the projecting member is provided at a tip portion of the floor plate so as to be bendable.