JPH06297992A - Truck provided with automatic loading device - Google Patents

Abstract

PURPOSE:To load/unload goods on a truck safely and surely without getting onto the car. CONSTITUTION:A conveyer 1 constituted by three rows of crawlar-type conveyers which can be driven back and forth between the front end and the rear end for transfer action is arranged on a load carrying platform of a truck, and a lower face on the carrier side is supported by three streaks of receiving members 8 constituted by roller groups in the abacus state arrangement. A lock mechanism is arranged at a driving sprocket, a tension sprocket and an intermediate locking sprocket 9 at the front and rear ends of each of the conveyer 1 for locking them at stop of the conveyer 1. Goods sensors 11 and 12 are arranged at the front and rear ends of the load carrying platform for stopping transfer action of the conveyer 1 by stopping a motor 10 when a transferred goods is detected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a freight vehicle equipped with an automatic cargo handling device capable of safely and reliably carrying out dangerous and severe cargo handling work when loading and unloading cargo.

[0002]

2. Description of the Related Art In the logistics industry, especially in the land transportation industry,
The role of a freight car is extremely large, it has a small turn, and it can be used anywhere, so a huge number of vehicles are operating. In these lorries, loading and unloading heavy objects is a heavy labor task and is dangerous. In particular, except for distribution centers, shipping areas, warehouses, factories, etc. that are fully equipped with cargo handling equipment such as forklifts and cranes.
This tendency is remarkable in the field where the cargo handling machine is not sufficient.

When such a lorry is used for courier service or when the cargo is delivered to various sites, the driver bears a great deal of labor for loading and unloading the luggage. In addition to the heavy labor of loading and unloading heavy cargo, it is also necessary to manually move the cargo placed on the edge of the bed by a forklift to the back of the bed. On the contrary, it is also necessary to move it from the back to the edge of the bed manually. In such a case, getting on and off the loading platform consumes a lot of labor in the case of a large vehicle. When loading and unloading cargo by human power, including such loading and unloading movements, there is a great danger.
And the hard work is essential.

Therefore, in such an application,
Operable personnel will be limited. For example, in the case of a person who is weak and not good at physical work, it becomes difficult for the driver to operate alone, and it becomes necessary to carry an operator for cargo handling. However, it is extremely uneconomical to have an auxiliary worker in addition to the driver when the personnel cost rises. Furthermore, although women have been making significant inroads into the logistics industry in recent years, the possibility of such an applicant would also be denied if the old-fashioned model was used.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a freight vehicle equipped with an automatic cargo handling device which can reduce dangerous and severe cargo handling work as much as possible and can reduce the labor of crew members. .

[0006]

The gist of the structure of the present invention is that the cargo bed of a freight vehicle is equipped with at least one conveyor for moving between the front and rear ends thereof, and at the rear of the cargo bed. In order to load and unload cargo from the loading platform, the conveyor is configured to be capable of reversible operation, and between the drive sprocket and the tension sprocket with one of the conveyors arranged at the front end and the other at the rear end. It is a crawler-type conveyor that is hung over the carrier, and is a freight vehicle equipped with an automatic cargo handling device configured as a crawler-type conveyor in which the lower surface on the carrier side is supported by a receiving member composed of rollers arranged in a soroban shape. The above problems can be solved.

It is necessary for the conveyor to be able to easily transfer even a relatively heavy cargo. From this viewpoint, the crawler type conveyor is optimal and in order to ensure its smooth transfer operation. In addition, as described above, the lower part on the carrier side of the crawler type conveyor is supported by the receiving member composed of the rollers arranged in the abacus shape.

As the prime mover for the conveyor, an electric motor specially prepared for it can be used, or the shaft output of a prime mover for vehicle propulsion can be used. A hydraulic motor can also be used as the prime mover of the conveyor. In principle, there is no reason to limit to a particular prime mover.

It is appropriate that the conveyor, which is the main body of the cargo handling apparatus, has an operation panel installed at the rear portion of the vehicle body or a remote controller so that it can be controlled by operations from these. In addition, when multiple conveyors are provided on the loading platform, not only is it possible to operate each conveyor individually, but it is also possible to operate multiple conveyors in synchronization when loading large cargo across multiple conveyors. Is preferred.

At the front end and the rear end of the loading platform, cargo sensors for detecting the cargo transported by the conveyor are arranged, and the cargo sensors are controlled by the detection signals to control the driving motor of the conveyor. It is preferable that the control unit is connected so as to transmit the detection signal to the control unit, and when the detection signal is input, the control unit controls the driving motor of the conveyor to stop.

[0011]

Since the present invention is configured as described above, loading and unloading of cargo is basically performed at the rear part of the cargo bed, but if necessary, a door is provided at the front end side of the cargo bed,
It is also possible to do so from that position.

For loading and unloading from the rear of the loading platform, first, cargo is manually or manually loaded on the rear end of the loading platform by some cargo handling equipment, and then a conveyor at a corresponding position is loaded and transferred to be sent to the back of the loading platform. The transfer operation should be such that there is room to load the next cargo at the rear end of the cargo bed. After that, when the cargo is loaded at the rear end of the cargo bed, the conveyor is loaded and transferred as described above and stopped.

By repeating this, the operator can move from the innermost to the rear end of the loading platform by the conveyor without getting on the loading platform.
Cargo can be loaded on the platform. At this time, the first loaded cargo reached the deepest,
If the cargo sensor is installed, it can be detected and the prime mover can be controlled so as to prohibit further loading and transferring operation by the conveyor. If the cargo is unloaded in order, the cargo shall be loaded in the order of unloading later.

When unloading the cargo from the loading platform, the operator shall unload it from the rearmost cargo. After the last cargo is unloaded, the conveyor is unloaded and the transfer operation is performed, and the last cargo at that time is transferred to the rear end of the cargo bed and stopped. If the cargo sensor is installed as described above, the conveyor stops at the time when the cargo is transferred to the rearmost end of the loading platform, so there is no risk of dropping the cargo. By repeating this, the operator can receive the entire cargo outside the rear end of the cargo bed.

Further, as described above, when the door is provided on the front end side of the cargo bed so that the cargo can be loaded and unloaded from the door, the cargo loaded from the rear end of the cargo bed can be sequentially taken out from here. Conversely, it is also possible to load from here and take out sequentially from the rear end of the loading platform. However, since it is not appropriate to work on the cargo bed, such handling is possible only for cargo that can be transferred by being placed on conveyors arranged on both sides of the cargo bed.

In any case, however, the labor required for loading and unloading cargo can be reduced and the work can be carried out safely and reliably. More specifically, according to the present invention, the operator of the cargo handling apparatus can be loaded and unloaded without having to get on and off the cargo bed each time, and is thus freed from severe labor. Further, it is possible to independently perform the work that has been conventionally performed by a plurality of workers on the loading platform and on the ground, and the physical labor required by the driver is significantly reduced. Therefore, it is possible to cultivate potential job seekers even in the logistics industry, which has traditionally been shunned as a profession that involves hard and demanding work, and a great effect can be expected from the viewpoint of securing a labor force.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a schematic side view of a freight vehicle to which the present invention is applied, FIG. 2 is a schematic plan view of a cargo bed with a part removed so that the inside can be seen, and FIG. 3 is a schematic back view of the cargo bed. Is.

In this embodiment, three conveyors 1 are arranged along the longitudinal direction between the front and rear ends of the loading platform. These conveyors 1, 1, 1 may be two or one, depending on the scale and use of the vehicle. Each conveyor 1, 1, 1
Frames 2 are located between them, and conveyors 1 on both sides are
Outer frames 3 are located on the outer sides of the conveyors 1, respectively, and these prevent the conveyors 1 from meandering during a transfer operation. The frames 2 and 2 are provided with a plurality of joists 4, 4 ...

Each of the conveyors 1 comprises a drive sprocket 5 and 5 at the rear end of the loading platform and a tension sprocket 6 at the front end of the loading platform.
It is constituted by a crawler belt which is stretched between both sides of 6, and can be transferred in forward and reverse directions as shown by a double-headed arrow in FIG. In this embodiment, the drive sprockets 5 and 5 are arranged at the rear end of the luggage carrier, but there is no inconvenience even if the front and rear are reversed.

The crawler belt is constructed as a crawler type conveyor 1 in which crawler plates 7, 7 ... Which are made of a metal plate such as a steel plate or an aluminum plate, or a plastic plate are connected to form an annular shape.

The crawler plate 7 should be selected with appropriate quality, strength, and size from the above-mentioned members according to the expected cargo to be loaded. The width of the crawler plate 7 is also limited by the curvatures of the front and rear drive sprockets 5 and 5 and the tension sprockets 6 and 6. The length is preferably a dimension that matches the width of the cargo to be loaded. For example, when handling a lot of pallet-carried cargo, a length slightly longer than the pallet is desirable.

Below the carrier side of each conveyor 1 constituted by the crawler belt, three receiving members 8, 8 and 8 composed of a roller group arranged in an abacus shape are arranged, and a heavy cargo is carried on the conveyor 1. Even if is placed, it will be supported below so that loading and unloading can be carried out smoothly. The receiving member 8 is installed on the joists 4, 4, ... Incidentally, it is appropriate that the receiving members 8 are arranged for each line 1 of the conveyors 1 to about 1 to 3 lines as needed.

As is apparent from FIG. 1, lock sprockets 9, 9, 9 are arranged at regular intervals in the middle of each conveyor 1. The lock sprockets 9 are interlocked with a lock mechanism (not shown) of the drive sprockets 5,
It is configured so that it is automatically locked when the cargo is not loaded and other loading operations are not performed. As a result, it is possible to prevent the collapse of the load and the like due to the movement of the conveyors 1, 1, 1 due to the inertia or the like when the freight vehicle is stopped or braked.

The lock mechanism of each drive sprocket 5 and the lock mechanism of each lock sprocket 9 interlocked with the drive sprocket 5 are electromagnetic in this example.
During the operation of (1), the lock is electromagnetically released, and when the conveyor 1 is stopped, the electromagnetic action is automatically stopped and the lock state is restored. Although not limited to this, the lock mechanism is preferably controlled so as to be a fail-safe by eliminating an operator's error from the viewpoint of improving safety.

In this example, an electric motor was used as the prime mover 10 for rotating the drive sprockets 5.

As shown in FIG. 1, cargo sensors 11 and 12 are provided at the front end and the rear end of the loading platform, respectively.
The cargo sensors 11 and 12 detect that the cargo transported by the conveyor 1 by the former has reached the front end of the cargo bed and that the cargo has arrived at the rear end of the cargo bed. The respective detection signals are transmitted to the control unit 13 described later, and the control unit 13 drives the conveyor 1 to drive the motor 1.
The operation of 0 is controlled to be stopped. The cargo sensors 11 and 12 are provided for each conveyor 1.

The above is the purpose of preventing the cargo from being fed beyond the limit of the front end of the cargo bed and colliding with the front wall or dropping from the rear end of the cargo bed when unloading.

The control unit 13 is installed at an appropriate position on the vehicle, and is operated by an operation panel 14 described later or based on a detection signal from the cargo sensors 11 and 12 to drive the prime mover 1.
0, etc. are controlled, and through the control, the loading and unloading transfer operations of the conveyors 1, 1, 1 individually or wholly driven by the prime mover 10 are performed, or they are controlled to be stopped.

The operation panel 14 controls the entire cargo handling apparatus through the control unit 13 as described above, and although it can be fixed to the vehicle body, remote control or wireless control via a cable is possible. Can also be configured as a remote control operation panel.

By making the operation panel 14 remotely operable as described above, the operation panel 14 can be operated, for example, while cargo is loaded on the rear end of the loading platform by a forklift truck while being in the cab of the forklift truck. It is also possible to operate the conveyor to load the conveyors 1, 1 and 1 and to perform a transfer operation to sequentially move the cargo to the back side of the loading platform.

Considering such applications, the conveyor 1,
In addition to the continuous operation, the operation of 1 and 1 can set the feed step corresponding to the depth of the loaded cargo.
It can be configured to drive only the corresponding distance by one button operation in. The setting and control of the feed distance in this case can be easily performed by attaching an encoder to the drive sprocket 5 and controlling so as to stop when the number of generated pulses reaches the set number of pulses.

[0032]

According to the present invention, the labor involved in the cargo handling work when loading or unloading a cargo on the bed of a freight car is greatly reduced, and safe and reliable cargo handling work can be carried out. In particular, it is particularly suitable for applications in which cargo is frequently loaded and unloaded on site without suitable cargo handling equipment. In such an application, only a driver who is not suitable for conventional cargo handling work can be operated, and manpower can be effectively used.

Since the cargo handling apparatus provided in the freight vehicle of the present invention can be remotely controlled, the cargo handling apparatus can be operated from any place, and can be used for small-lot cargo handling work, for example, as a courier service. Is also suitable. For the unloading at the delivery destination, there are many cases where relatively small items are handled, but it is possible to unload the cargo without going in and out of the cargo bed each time, improving delivery efficiency and reducing the labor of the person in charge. Has an effect on.

Further, when a large number of heavy loads are loaded and unloaded by a plurality of forklifts, it is possible to efficiently carry out preparations for the subsequent cargo handling work while the forklifts are running, and the time required for the cargo handling work is greatly increased. Can be shortened to During these operations, cargo handling work can be performed with high safety.

[Brief description of drawings]

FIG. 1 is a schematic side view of a freight vehicle equipped with an automatic cargo handling apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic plan view showing a cargo bed of a freight vehicle equipped with the automatic cargo handling apparatus of FIG. 1 with some conveyors removed.

FIG. 3 is a schematic rear view of the luggage carrier of the truck equipped with the automatic cargo handling apparatus of FIG.

[Explanation of symbols]

 1 Conveyor 2 Frame 3 Outer Frame 4 Joist 5 Drive Sprocket 6 Tension Sprocket 7 Crawler Plate 8 Receiving Member 9 Lock Sprocket 10 Motor 11 Cargo Sensor 12 Cargo Sensor 13 Control Unit 14 Control Panel

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[Procedure amendment]

[Submission date] January 19, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

[0006]

SUMMARY OF THE INVENTION The gist of the structure of the present invention is to provide at least one conveyor for transporting between the front and rear ends of a carrier of a freight vehicle , the carrier comprising:
The side above the joist of the platform and the return side below the joist.
Equipped with a conveyor that passes each , and behind the loading platform,
In order to obtain brewing line loading and unloading of cargo to該荷stand, the conveyor is reversible driving operably configured, the conveyor, the front end of the one loading platform, the rear end and the other, with each disposed drive sprocket tensions a crawler-type conveyor looped between the sprockets, the lower surface of the carrier side
A freight vehicle equipped with an automatic cargo handling device configured as a crawler type conveyor supported by a receiving member formed of a roller group having a joisted abacus arrangement , and the above problems can be solved by this.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

It is necessary for the conveyor to be capable of easily transferring a relatively heavy cargo, and from this point of view , as described above, the conveyor is carried over the joist.
The crawler type conveyor having a configuration in which the side passes and the return side passes under the joist is optimal, and in order to ensure the smooth transfer operation thereof, as described above, The structure is such that the lower part on the carrier side is supported by a receiving member consisting of a group of rollers arranged in an abacus shape.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction content]

Each of the conveyors 1 comprises a drive sprocket 5 and 5 at the rear end of the loading platform and a tension sprocket 6 at the front end of the loading platform.
6 is composed of a crawler belt that is stretched between both sides, and as shown in FIGS.
Passing above the joists 4, 4 ..., the return side is joists 4, 4
... pass under. Moreover, each of these conveyors 1 is shown in FIG.
As indicated by the double-headed arrow inside, the transfer operation can be performed in the forward and reverse directions. In this embodiment, the drive sprockets 5 and 5 are arranged at the rear end of the luggage carrier, but there is no inconvenience even if the front and rear are reversed.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction content]

Further, when a large number of heavy loads are loaded and unloaded by a plurality of forklifts, it is possible to efficiently carry out preparations for the subsequent cargo handling work while the forklifts are running, and the time required for the cargo handling work is greatly increased. Can be shortened to During these operations, cargo handling work can be performed with high safety. Furthermore, in the lorry of the present invention
The conveyor in the configured cargo handling equipment is loaded on the carrier side.
Above the joist of the stand, the return side is below the joist,
It is a crawler type conveyor that passes through and is easily required.
It is possible to secure sufficient strength, and the lower surface on the carrier side is
A receiver consisting of roller groups arranged in a joist-shaped abacus.
Since it is supported by a squeeze member, it is easy to transfer heavy cargo.
It can be done easily.

Claims (5)

[Claims] 1. A cargo bed of a freight vehicle is equipped with at least one conveyor for moving between front and rear ends thereof, and at the rear of the cargo bed, to load and unload cargo.
The conveyor is configured to be capable of reversible operation, the conveyor is a crawler type conveyor hung between a drive sprocket and a tension sprocket, one of which is arranged at the front end of the loading platform and the other at the rear end, A freight vehicle equipped with an automatic cargo handling device configured as a crawler type conveyor whose lower surface on the carrier side is supported by a receiving member composed of rollers arranged in an abacus shape. 2. A lorry equipped with the automatic cargo handling apparatus according to claim 1, wherein the prime mover of the conveyor is an electric motor. 3. A freight vehicle having an automatic cargo handling apparatus according to claim 1, wherein the prime mover of the conveyor utilizes the shaft output of a prime mover for vehicle propulsion. 4. A lorry equipped with the automatic cargo handling apparatus according to claim 1, wherein the prime mover of the conveyor is a hydraulic motor. 5. A cargo sensor for detecting a cargo transported by the conveyor is provided at each of a front end and a rear end of the cargo bed, and each of the cargo sensors controls a detection signal of the cargo driving motor of the conveyor. And a control unit for transmitting the detection signal, the control unit controls the drive motor of the conveyor to be stopped when the detection signal is input. A lorry equipped with 3 or 4 automatic cargo handling devices.