JP2005263045A - Cargo circulation device of cargo vehicle, cargo circulation method and cargo vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cargo circulation device of a cargo vehicle for a worker enabling him to carry out loading and unloading work of a cargo in a short period of time and with small labor while circulating the cargo on a cargo bed, and to positively prevent the cargo from breaking loose and in simple and inexpensive structure. <P>SOLUTION: This device is furnished with a plurality of pallets 5 provided in correspondence with each of compartment regions except for a compartment region for transfer, a longitudinal transfer means (longitudinal transfer conveyor 6) to transfer each of the pallets of one row in the longitudinal direction of the cargo carrying platform in the longitudinal direction, a left and right transfer means (left and right transfer conveyor 7) to transfer each of the pallets of one row in the left and right direction of the cargo carrying platform in the left and right directions, a motive power change-over transmission means 8 having another driving source (driving motor 23) and free to transmit motive power of the driving source by changing the longitudinal transfer means and the left and right transfer means over to each other and a pallet movement regulation/release means 9 to regulate or to release movement of the pallet to the compartment region for transfer. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cargo circulation device, a cargo circulation method, and a cargo vehicle for a freight vehicle. More specifically, the operator can perform loading and unloading and loading operations of a load with a small amount of labor in a short time, and prevents collapse of the load. The present invention relates to a cargo circulation device, a cargo circulation method, and a cargo vehicle having a simple and inexpensive structure.

As a conventional baggage circulation device, for example, a device for transferring a baggage in an arc-like locus (track-like locus) on a cargo carrier (for example, see Patent Documents 1 and 2). However, in Patent Documents 1 and 2 described above, there are problems such as a relatively small cargo loading space and a high possibility of collapsing when the cargo vehicle is traveling.
Thus, as a conventional luggage circulation device that solves the above problem, for example, a machine that moves a luggage in the front-rear direction and the left-right direction on the loading platform of a freight vehicle is known (see, for example, Patent Documents 3 and 4). .

However, in Patent Documents 3 and 4, two front-and-rear transfer means (conveyors) for transferring two rows in the front-rear direction of the loading platform in the front-rear direction and two rows in the left-right direction of the loading platform in the left-right direction And two left and right transfer means (conveyors) to be transferred to the machine, and the load is circulated fully automatically, so that the entire apparatus has a complicated and expensive structure. In addition, the left and right transfer means have a mechanism that can be raised and lowered so that smooth delivery of goods can be performed between the front and rear transfer means and the left and right transfer means, and a dedicated drive for driving the front and rear transfer means. Since a drive source (drive motor) and a dedicated drive source (drive motor) for driving the left and right transfer means are provided, the apparatus is extremely complicated and expensive.
Further, in Patent Documents 3 and 4 described above, since the load is directly transferred by the front and rear transfer means and the left and right transfer means, the load collapse may occur when the cargo vehicle travels depending on the shape of the load. There was a fear.

In addition, a conventional freight vehicle is known in which a cargo lifting device is disposed on the opening end side of a cargo bed (see, for example, Patent Documents 2 to 4).
However, the conventional luggage lifting device is configured with high strength on the premise that an operator rides on a lifting plate that lifts and lowers the luggage, and the lifting plate can swing between the working position and the storage position in the vehicle. Since it was provided, it was extremely expensive. Therefore, the appearance of a luggage lifting device having a simple and inexpensive structure is desired for the purpose of raising and lowering a relatively light weight (for example, 50 to 60 kg, etc.) luggage.

JP-A-8-133432 Japanese Patent No. 3324896 JP-A-63-306943 Reality 5-20600

  As described above, the present invention has been made in view of the above-described situation, and allows an operator to perform loading and unloading / loading work of a load with a small amount of work in a short time while circulating the load on the loading platform, and the collapse of the load. It is an object of the present invention to provide a cargo circulation device for a cargo vehicle having a simple and inexpensive structure and a cargo vehicle including the same. Another object of the present invention is to provide a suitable luggage circulation method using the freight vehicle.

The present invention is as follows.
1. It is provided corresponding to each of the other divided areas excluding at least one transfer divided area among a plurality of divided areas formed by dividing the cargo carrier bed in the front-rear direction and the left-right direction, and can be transferred on the load bed. There are multiple pallets that can be loaded with luggage,
Front-rear transport means for transporting each pallet in the front-rear direction of the loading platform in the front-rear direction;
Left and right transport means for transporting each row of pallets in the left and right direction of the loading platform in the left and right direction;
Power switching transmission means having one driving source and capable of switching and transmitting the power of the driving source to one of the front and rear transfer means and the left and right transfer means;
A cargo circulation device for a freight vehicle, comprising: pallet movement regulation / release means for regulating / releasing movement of the pallet to the partition area for transfer.
2. A state detection means for detecting a restriction state and / or a release state of the movement of the pallet by the pallet movement restriction / cancellation means, and a notification provided in a driver's seat of the freight vehicle and notifying a detection result of the state detection means And further comprising means. A cargo circulation device for a described freight vehicle.
3. The above-mentioned front-rear transfer means is a front-rear transfer conveyor that transfers the pallets in the front-rear direction at one pitch, and the left-right transfer means is a left-right transfer conveyor that transfers the pallets in the left-right direction at one pitch. Or 2. The cargo circulation device for cargo vehicles described in 1.
4). The power switching transmission means connects and releases the first rotating shaft and the second rotating shaft connected to the output shaft of the driving motor as the driving source, and the first rotating shaft and the left and right transfer conveyor. 2. The one-way clutch, the second one-way clutch for connecting / releasing the second rotating shaft and the front / rear transfer conveyor, and the control means for controlling forward / reverse driving of the drive motor. A cargo circulation device for a described freight vehicle.
5). The above-mentioned 1. The pallet has a dish shape formed by opening a rear end side in the front-rear direction of the loading platform. To 4. The cargo circulation device for a freight vehicle according to any one of the above.
6). The pallet includes a traveling wheel that travels on the loading platform, and a locked portion that is engaged with and disengaged from a locking portion that is provided on each of the front and rear transfer means and the left and right transfer means. To 5. The cargo circulation device for a freight vehicle according to any one of the above.
7). Above 1. To 6. A cargo vehicle comprising the cargo circulation device according to any one of the above in a cargo bed.
8). A load elevating device disposed on the opening end side of the loading platform, the luggage lifting device being provided on the luggage circulating device and / or the loading platform, and detachably provided on the securing device; 6. The lifting drive means having a lifting bar capable of lifting and lowering, and a plurality of mounting bars on which one end side is detachably provided on the lifting bar to load a load. The listed freight vehicle.
9. The elevating drive means is provided on a frame, an engaging portion provided on the frame and engageable with the fixing means, a drive source provided on the frame, and supported by the frame so as to be raised and lowered. The above-mentioned 8. The raising / lowering member and the said raising / lowering bar supported by this raising / lowering member so that rocking | fluctuation around a horizontal axis is possible. The listed freight vehicle.
10. Above 7. Thru 9. A cargo circulation method using the freight vehicle according to any one of
The plurality of partition areas divide a large number of the loading platforms in the front-rear direction and are divided into two in the left-right direction, and the transfer partition area is set to one on the rear end side in the front-rear direction of the loading platform. Yes,
First, the pallet movement restriction is performed in a state where the pallet is provided corresponding to each of the other division areas excluding the transfer division area and the movement of the pallet is restricted by the pallet movement restriction / release means. Canceling the movement restriction of the pallet by the releasing means, and pulling out the pallet in the partition area adjacent to the transfer partition area in the left-right direction to the transfer partition area;
Next, power of the drive source is transmitted to the front / rear transfer means by the power switching transmission means, and the front / rear transfer means passes through a partition area which is emptied on the rear end side of the load platform. Transfer each pallet in the front / rear direction at a pitch from the back to the rear end,
Next, the power switching transmission means transmits the power of the drive source to the left and right transfer means, and the left and right transfer means passes the partition area emptied on the back side of the load bed to the back side of the load bed. Pallets are transported at a pitch in the left-right direction,
Thereafter, the pallets in the transfer partition region are pushed from the rear end side toward the back side through the partition region that is empty on the back side of the loading platform, and each pallet in one row in the front-rear direction of the loading platform. From the rear end side to the back side at a pitch,
Next, the cargo circulation method for a freight vehicle, wherein the movement of the pallet is restricted by the pallet movement restriction / release means.
11. Above 7. Thru 9. A cargo circulation method using the freight vehicle according to any one of
The plurality of partition areas divide a large number of the loading platforms in the front-rear direction and are divided into three in the left-right direction, and the transfer partition areas are adjacent to each other on the rear end side in the front-rear direction of the loading platform. Is set,
First, the pallet movement restriction is performed in a state where the pallet is provided corresponding to each of the other division areas excluding the transfer division area and the movement of the pallet is restricted by the pallet movement restriction / release means. -The movement restriction of the pallet by the releasing means is canceled, and the two pallets in the partition area adjacent to the transfer partition area in the left-right direction and the partition area adjacent to the partition area in the front-rear direction are used for the two transfers. Pull it into the compartment,
Next, the power of the driving source is transmitted to the front / rear transfer means by the power switching transmission means, and the front / rear transfer means passes through the partition area emptied on the rear end side of the load bed. Transfer each pallet in the front / rear direction at a pitch from the back to the rear end,
Next, power of the drive source is transmitted to the left and right transfer means by the power switching transmission means, and the left and right direction of the load platform is separated by the left and right transfer means through a partition area that is empty on the back side of the load platform. 1 row of each pallet is transported at 1 pitch in the left-right direction,
Thereafter, the power switching transmission means transmits the power of the drive source to the front / rear transfer means, and the front / rear transfer means causes the front and rear Each pallet in one direction is transferred at a pitch from the back to the rear end,
Next, the power of the drive source is transmitted to the left and right transfer means by the power switching transmission means, and the back of the cargo bed is passed through the partition area emptied on the back side of the load bed by the left and right transfer means. Transport the side pallet in the left-right direction at 1 pitch,
Next, the two pallets in the two transfer partition areas are pushed in from the rear end side to the back side through the two partition areas emptied on the back side of the loading platform, and the longitudinal direction of the loading platform 2 rows of pallets are transferred at a pitch from the rear end to the back,
Then, the cargo circulation method for a freight vehicle, wherein the movement of the pallet is restricted by the pallet movement restriction / release means.
12 10. The notification means provided in the driver's seat of the freight vehicle notifies the pallet movement restriction / cancellation state and / or release state by the pallet movement restriction / cancellation means. Or 11. The cargo circulation method for freight vehicles described in 1.

According to the cargo circulation device for a cargo vehicle of the present invention, the automatic pallet transfer by the front and rear transfer means and the left and right transfer means and the manual pallet transfer are combined to circulate the luggage on the loading platform, and the circulation of the luggage. In this case, the worker can load and unload and load the luggage with a small amount of labor in a short time. In this way, since the front and rear transfer means and the left and right transfer means are provided on the cargo bed, one by one, the apparatus as a whole can have a simple and inexpensive structure. In addition, since the power of one drive source is selectively switched and transmitted to one of the front and rear transfer means and the left and right transfer means by the power switching transmission means, a simpler and cheaper structure can be obtained. it can. In addition, the cargo is circulated using a pallet standardized according to the size of the loading platform, and the movement of the pallet to the transfer compartment is regulated by the pallet movement / regulation means. It is possible to suppress the occurrence of load collapse during traveling.
In addition, a state detection unit that detects a restriction state and / or a release state of the movement of the pallet, and a notification unit that is provided in a driver's seat of the cargo vehicle and notifies a detection result of the state detection unit. In this case, the operator can check the pallet movement state and / or the release state of the pallet by the pallet movement / restriction means in the driver's seat, and can prevent the cargo vehicle from traveling in the state of releasing the pallet movement restriction. .
Further, the front-rear transfer means is a front-rear transfer conveyor that transfers the pallets in the front-rear direction at one pitch, and the left-right transfer means is a left-right transfer conveyor that transfers the pallets in the left-right direction at one pitch. Can have a simpler and cheaper structure.
Further, when the power switching transmission means includes a first rotation shaft and a second rotation shaft, a first one-way clutch, a second one-way clutch, and a control means, the drive motor is controlled by the control means. By rotating in the forward direction, the first one-way clutch is enabled and the second one-way clutch is disabled, the first rotating shaft and the left and right transfer conveyor are connected, and the power of the drive motor is transmitted to the left and right transfer conveyor. On the other hand, the drive motor is reversely rotated to disable the first one-way clutch and to enable the second one-way clutch, and the power of the drive motor is transferred back and forth by connecting the second rotating shaft and the front and rear transfer conveyor. It is transmitted to the conveyor. As a result, a simpler and cheaper structure can be obtained.
In addition, when the pallet has a dish shape formed by opening the rear end side in the front-rear direction of the loading platform, it is possible to more reliably prevent the load collapse of the load placed on the pallet and to load the load on the pallet. Unloading and loading work can be done easily.
When the pallet has a traveling wheel and a locked portion, the locking portions of the front and rear transfer means and the left and right transfer means are locked to the locked portion of the pallet, and the pallet It is run on the loading platform. As a result, the pallet can be smoothly and stably transported on the loading platform.
According to the freight vehicle of the present invention, the automatic pallet transfer by the front and rear transfer means and the left and right transfer means and the manual pallet transfer are combined to circulate the luggage on the loading platform, and when the luggage is circulated, Workers can load and unload and load loads in a short time with little effort. In this way, since the front and rear transfer means and the left and right transfer means are provided on the cargo bed, one by one, the apparatus as a whole can have a simple and inexpensive structure. In addition, since the power of one drive source is selectively switched and transmitted to one of the front and rear transfer means and the left and right transfer means by the power switching transmission means, a simpler and cheaper structure can be obtained. it can. In addition, the cargo is circulated using a pallet standardized according to the size of the loading platform, and the movement of the pallet to the transfer compartment area is regulated by the pallet movement / regulation means. Regardless of the above, it is possible to suppress the collapse of the cargo when the cargo vehicle is traveling.
In addition, when the load elevating apparatus further includes a fixing means, an elevating drive means, and a plurality of mounting bars, the elevating drive means is further provided with a load elevating apparatus disposed on the opening end side of the loading platform. As a result, the loading bar on which the load is loaded is moved up and down together with the lifting bar. Then, the operator can push and pull the luggage between the placement bar and the luggage circulation device. Therefore, it is possible to reduce the labor for loading / unloading loads on / from the carrier circulation device. In addition, the worker can enter the fork-like portion formed by the elevating bar and the plurality of mounting bars and perform the work of loading / unloading the load. As a result, the placement bar only needs to be lifted and lowered with only a relatively light load placed thereon, and the entire device can be made extremely simple and inexpensive. Furthermore, the fixing means, the raising / lowering driving means, the mounting bar and the like can be separated from each other, and can be accommodated in the accommodation space as appropriate.
Moreover, when the said raising / lowering drive means has a frame, an engaging part, a drive source, an raising / lowering member, and the said raising / lowering bar, it can be set as a still simpler and cheap structure. Further, the lifting bar can be swung and stored in the frame, so that the storage efficiency of the lifting drive means can be improved.
According to the cargo circulation method for a freight vehicle of the present invention, when there are two rows in the front-rear direction of the loading platform, first, the operator moves from the state in which the pallet movement restriction / release means is released. One pallet on the rear end side of the loading platform is pulled out to the transfer partition area, and then emptied on the rear end side of the loading platform by the front and rear transfer means to which the power of the driving source is transmitted by the power switching transmission means. A predetermined row of pallets in the front-rear direction of the loading platform are transferred at a pitch from the rear side to the rear end side through the partitioned area, and then the power of the drive source is transmitted by the power switching transmission means. The pallet on the back side of the loading platform is transported by one pitch in the left-right direction through the partition area emptied on the back side of the loading platform by the left and right transport means, and then emptied on the back side of the loading platform by the operator. Through the partitioned area The pallets in the transfer partition area are pushed in from the rear end side to the back side, and each predetermined row of pallets in the front-rear direction of the loading platform is transferred from the rear end side to the back side by one pitch, and the next Furthermore, the movement of the pallet is restricted by the pallet movement restriction / release means. Accordingly, it is possible to transport the baggage in the front-rear direction and the left-right direction on the loading platform and to circulate the baggage appropriately. be able to.
According to the cargo circulation method of another cargo vehicle of the present invention, when there are three rows in the front-rear direction of the loading platform, first, work is started from a state in which the pallet movement restriction / release means is released. The two pallets on the rear end side of the loading platform are pulled out to the two transfer compartment areas by the person, and then the rear end side of the loading platform is transferred by the front and rear transfer means to which the power of the driving source is transmitted by the power switching transmission means. A predetermined one row of each pallet in the front-rear direction of the loading platform is transferred from the rear side to the rear end side at a pitch through the compartment area that has become empty, and then the power of the drive source is transmitted by the power switching transmission means. The left and right transfer means to which the pallet is transmitted, through the partition area emptied on the back side of the loading platform, each pallet of a predetermined row in the left and right direction of the loading platform is transferred at one pitch in the left and right direction, and then the power is switched. Drive by means of transmission Through the front and rear transfer means to which the power of the source is transmitted, a predetermined row of each pallet in the front and rear direction of the loading platform is directed from the rear side to the rear end side through a partition area that is emptied on the rear end side of the loading platform. The pallet on the back side of the loading platform is moved to the left and right through the partition area that is emptied on the back side of the loading platform by the left and right transportation means that is transferred at one pitch and then the power of the driving source is transmitted by the power switching transmission device. The two pallets in the two transfer compartments are transferred from the rear end side to the back side by the operator through the two compartment areas emptied on the back side of the loading platform. The two pallets in the predetermined two rows in the front-rear direction of the loading platform are transported at a pitch from the rear end side to the back side, and then movement of the pallets is restricted by the pallet movement restriction / release means. . Accordingly, it is possible to transport the baggage in the front-rear direction and the left-right direction on the loading platform and to circulate the baggage appropriately. be able to.
In the case where the notification means provided in the driver's seat part of the freight vehicle notifies the pallet movement restriction / cancellation state by the pallet movement restriction / cancellation means, However, the restricted state and / or the released state of the pallet movement by the pallet movement / restricting means can be confirmed, and the traveling of the cargo vehicle in the released state of the pallet movement restriction can be prevented.

1. Freight vehicle The freight vehicle according to the present invention is not particularly limited in type, size, and the like as long as a cargo circulation device described later is provided in the loading platform. This freight vehicle can further include, for example, a luggage lifting device described later. Examples of the freight vehicle include a freight car (truck) and a freight train.
The “loading platform” is not particularly limited in shape, size, or the like as long as it is partitioned into a plurality of sections in the front-rear direction and the left-right direction and a plurality of section areas are set. At least one of the plurality of partition areas is set as a transfer partition area. Moreover, the planar shape of the loading platform is usually formed in a rectangular shape whose longitudinal direction is the longitudinal direction. Further, the loading platform can be, for example, a box shape with the upper part closed or a box shape with the upper part opened.
The type, size, shape, etc. of the “package” are not particularly limited. For example, the luggage can be stored in a dedicated container in advance.
The “front-rear direction” means a direction substantially coincident with the straight traveling direction of the cargo vehicle, and the “left-right direction” means a direction substantially orthogonal to the straight traveling direction of the cargo vehicle. The “back side” means the forward side of the freight vehicle, and the “rear end side” means the reverse side of the freight vehicle. These shall apply similarly in the following description.

2. Baggage Circulation Device The “baggage circulation device” according to the present invention includes a pallet, a front / rear transfer means, a left / right transfer means, a power switching transmission means, and a pallet movement restriction / release means described below. This luggage circulation device can include, for example, state detection means and notification means described later.

  The “pallet” is not particularly limited in its structure, shape, size, and the like as long as it can run on the loading platform and can place a load. This pallet is usually used in a number corresponding to each partition area excluding at least one transfer partition area. Further, the planar shape of the pallet is generally a shape that substantially matches the planar shape of the partition area. Further, this pallet can be, for example, a flat plate shape, but it is preferable that the pallet has a dish shape formed by opening the rear end side from the viewpoint of handling and stability of luggage. Further, for example, the lower surface of the pallet can slide on the loading platform, but it is preferable to have running wheels from the viewpoint of mobility. Examples of the running wheels include rolling balls and casters. Moreover, this traveling wheel can be provided in the four corners of the lower surface of a pallet, for example. Moreover, this pallet can have the to-be-latched part latched to the latching | locking part provided in the back-and-forth transfer means mentioned later and the right-and-left transfer means, for example. This locking portion can be provided, for example, at the center of the lower surface of the pallet.

  The “front / rear transfer means” is not particularly limited in its structure, transfer form, timing, and the like as long as each pallet in a predetermined row in the front / rear direction of the loading platform can be transferred in the front / rear direction. Examples of the forward / backward transfer means include a conveyor, a push mechanism, and a pull mechanism. From the standpoint that a simpler and cheaper structure can be achieved, it is preferable that the front-rear transfer means is a front-rear transfer conveyor (particularly preferably a chain conveyor) that transfers the pallets in the front-rear direction at one pitch. This front-rear transfer conveyor can be provided, for example, over two partitioned areas adjacent in the front-rear direction. Thereby, the installation operation | work of the front-and-back transfer conveyor to a loading platform can be simplified.

  The “left / right transfer means” is not particularly limited in its transfer form, timing, and the like as long as each pallet in a predetermined row in the left / right direction of the loading platform can be transferred in the left / right direction. Examples of the left / right transfer means include a conveyor, a push mechanism, and a pull mechanism. From the viewpoint that a simpler and cheaper structure can be achieved, it is preferable that the left-right transfer means is a left-right transfer conveyor (particularly preferably, a chain conveyor) that transfers the pallets in the left-right direction at one pitch. This left-right transfer conveyor can be provided over, for example, two partitioned areas adjacent in the left-right direction. Thereby, the installation work of the right-and-left transfer conveyor to a loading platform can be simplified.

  As long as the “power switching transmission means” has one drive source and can transfer the power of this drive source to one of the front-rear transfer means and the left-right transfer means, its structure, transmission form, timing Etc. are not particularly limited. Examples of the drive source include a motor, a cylinder, and a pump. The power switching transmission means includes, for example, (1) a first rotating shaft and a second rotating shaft linked to an output shaft of a driving motor as the driving source, the first rotating shaft and the left and right transfer conveyor. A first one-way clutch for connecting / disconnecting, a second one-way clutch for connecting / releasing the second rotating shaft and the front / rear transfer conveyor, and control means for controlling forward / reverse rotation of the drive motor. (2) A first electromagnetic clutch for connecting / releasing the first rotary shaft and the second rotary shaft connected to the output shaft of the drive motor as the drive source, and the first rotary shaft and the left / right transfer conveyor And a second electromagnetic clutch for connecting and releasing the second rotating shaft and the front and rear transfer conveyor, and a control means for controlling the drive motor, the first electromagnetic clutch, and the second electromagnetic clutch. It can be mentioned.

  Here, the first rotating shaft and the second rotating shaft can be connected to each other via a gear mechanism such as a bevel gear, for example. Moreover, the said one-way clutch and electromagnetic clutch can comprise the surrounding parts (for example, a turning shaft, a sprocket, etc.) of the front-rear transfer conveyor and the left-right transfer conveyor, for example. Examples of the electromagnetic clutch include a friction plate type, a meshing type, and a gap type. Further, the control means can control the drive motor based on a preset set time, for example, but from the viewpoint that switching control can be performed at a more appropriate timing, the control means It is preferable to control the drive motor based on the detection result of the transfer amount detection means for detecting the transfer amount of the pallet (or luggage) transferred by the transfer conveyor and the left and right transfer conveyors. The type and installation form of the transfer amount detection means are not particularly limited. Examples of the transfer amount detection means include a limit switch, a proximity switch, a photo sensor, and an encoder. The control means normally drives the drive motor based on an operation start signal from an operation start switch provided on the loading platform.

  The “pallet movement regulation / cancellation means” is not particularly limited in its structure, regulation / cancellation mode, number, etc., as long as it can regulate / cancel movement of the pallet to the transfer partition area. Examples of the pallet movement restriction / cancellation means include: (1) Restricting movement of a pallet in a partition area provided corresponding to the transfer partition area and adjacent to the transfer partition area to the transfer partition area; -Pallet movement restriction / release mechanism to be released, (2) Pallet movement restriction / release member having substantially the same shape as the pallet detachably disposed in the transfer partition area. In the case of the form (1), the pallet movement restriction / release mechanism can be operated by, for example, an operator or can be operated by a drive source (for example, a motor, a cylinder, a pump, or the like). From the standpoint that the structure can be made simpler and less expensive, the pallet movement restriction / release mechanism is supported by the load platform so as to be swingable between a position where the pallet (or load) is pressed and a position where the pallet (or load) is released. And a positioning portion for positioning the pressing lever at a position for pressing the pallet (or luggage).

  As long as the “state detection means” can detect the pallet movement restriction state and / or the release state by the pallet movement restriction / cancellation means, its type, installation form, etc. are not particularly limited. Examples of the state detection unit include a limit switch, a proximity switch, a photo sensor, and an encoder.

The “notification means” is not particularly limited as long as it is provided in the driver's seat of the freight vehicle and can notify the detection result of the state detection means. Examples of the notification means include a lamp (light), a speaker (sound), and various display units.
In addition, the said load circulating apparatus can further be provided with the engine stop means which does not start the engine of a cargo vehicle, for example, when the cancellation | release state of the movement control of a pallet is detected by the said state detection means.

3. Package Lifting Device The “package lifting device” includes a fixing unit, a lifting drive unit, and a plurality of placement bars described below. The luggage lifting device is disposed on the opening end side of the loading platform. Examples of the opening end side include a rear end side in the front-rear direction of the vehicle and a side end side in the left-right direction of the vehicle. The opening on the opening end side can be opened and closed by, for example, a door, a shutter, or the like, or can be always opened.

  As long as the “fixing means” is provided in the load circulating device and / or the loading platform, the structure, the fixing form, etc. are not particularly limited. This fixing means can be provided, for example, in a storage space formed between the luggage lifting device and the floor surface. For example, the fixing means may have an engaged part to which an engaging part constituting an elevating driving means described later is engaged and disengaged. Examples of the engaged portion include an annular portion, a tongue-like portion, and a hook-like portion. In addition, the engaged portion can be provided, for example, in a non-displaceable manner at a predetermined position, but is provided so as to be displaceable between a protruding position that protrudes outward from the loading platform and a storage position that fits inside the loading platform. It is preferable that Examples of the displacement include expansion / contraction, sliding, rotation, and turning.

  The “elevating drive means” is not particularly limited in its structure, elevating form, or the like as long as it has an elevating bar that is detachably provided on the fixing means and can be raised and lowered. The lift bar normally extends in the left-right direction of the vehicle. Further, examples of the fixing form (mounting form) between the elevating drive means and the fixing means include engagement, screwing, clamping, and the like. In particular, engagement is preferable.

  The lifting drive means is, for example, a frame, an engaging portion provided on the frame and engageable with the fixing means, a drive source provided on the frame, and a drive supported by the frame so as to be raised and lowered. The elevating member that is moved up and down by a source, and the elevating bar supported by the elevating member so as to be swingable around a horizontal axis. This frame is usually a frame extending in the vertical direction. Examples of the engaging portion include a tongue-like portion, an annular portion, and a hook-like portion that can be engaged with and disengaged from the engaged portion. Examples of the drive source include a drive motor, a cylinder, and a pump. A drive motor is particularly preferable. Moreover, the said raising / lowering member can be the raising / lowering block penetrated by the support shaft extended along the longitudinal direction of a flame | frame, and was supported so that raising / lowering was possible.

  Here, a power transmission mechanism for transmitting the power of the drive source to the lifting member is usually provided between the drive motor and the lifting member. As this power transmission mechanism, for example, (1) an endless member wound between upper and lower rollers pivotally supported around the horizontal axis on the upper and lower ends of the frame and connected to the elevating member, and the drive A gear mechanism interposed between the drive shaft of the motor and one of the rollers, (2) a screw shaft coupled to the drive shaft of the drive motor, screwed to the screw shaft, and The form provided with the screw body connected with a raising / lowering member etc. can be mentioned. Accordingly, it is not necessary to use a motor with a brake as the drive motor by screwing the gear mechanism, the screw shaft, and the screw body, and a cheaper motor can be used.

  In the case of (1) above, it is preferable that the upper and lower rollers are sprockets and the endless member is a chain. Examples of the gear mechanism include a worm gear and a bevel gear. In particular, a worm gear is preferable. In the case of (2), a ball screw in which a large number of balls are interposed between the screw shaft and the screw body may be used.

  The “plurality of mounting bars” is not particularly limited in shape, length, number, etc. as long as one end side thereof is detachably provided on the lifting bar. This mounting bar normally extends in the front-rear direction of the vehicle. In addition, examples of the fixing form (mounting form) between the mounting bar and the lift bar include engagement (including insertion), screwing, clamping, and the like. In particular, engagement is preferable.

4). Baggage Circulation Method The baggage circulation method according to the present invention is a method using the above-described freight vehicle, which is described below: [1] a form in which the front and rear rows of the cargo bed are set in two rows, [2] For example, the front-rear direction has three rows.

[1] First, (1) one pallet in the partition area on the rear end side of the loading platform is moved into one transfer partition area by the operator from the state in which the pallet movement restriction by the pallet movement restriction / release means is released. Next, (2) a predetermined direction in the front-rear direction of the loading platform is passed through the partition area that is emptied on the rear end side of the loading platform by the front-rear transporting device to which the power of the driving source is transmitted by the power switching transmission device. Each row of pallets is transferred at one pitch from the rear side toward the rear end side, and then (3) the left and right transfer means to which the power of the drive source is transmitted by the power switching transmission means on the rear side of the loading platform. The pallet on the back side of the loading platform is transported at a pitch in the left-right direction through the empty partition area, and then (4) by the operator through the partition area that is empty on the back side of the loading platform, The pallet in the transfer area is It is pushed from the end side toward the back side, and each pallet in a predetermined row in the front-rear direction of the loading platform is transferred from the rear end side toward the back side at one pitch, and then (5) Pallet movement restriction / A form in which the movement of the pallet is restricted by the release means.
Here, in the case of the above-mentioned [1], an appropriate timing from the completion of the step (1) to the start of the step (4) {preferably during the steps (2) and (3) At an appropriate timing}, it is possible to load / unload the cargo on / from the pallet in the transfer partition area.

[2] First, (1) the two pallets in the partition area on the rear end side of the loading platform are divided into two transfer partition areas by the operator from the state in which the pallet movement restriction by the pallet movement restriction / release means is released. Next, (2) a predetermined direction in the front-rear direction of the loading platform is passed through the partition area that is emptied on the rear end side of the loading platform by the front-rear transporting device to which the power of the driving source is transmitted by the power switching transmission device. Each row of pallets is transferred at one pitch from the rear side toward the rear end side, and then (3) the left and right transfer means to which the power of the drive source is transmitted by the power switching transmission means on the rear side of the loading platform. A predetermined row of each pallet in the left-right direction of the loading platform is transferred at one pitch in the left-right direction through the empty section area, and then (4) the power of the drive source is transmitted by the power switching transmission means. By front and rear transfer means A predetermined one row of each pallet in the front-rear direction of the loading platform is transferred at a pitch from the rear side to the rear end side through the partition area that is emptied on the rear end side of the loading platform, and then (5) The pallet on the back side of the loading platform is transferred in the left-right direction at a pitch by the left and right transporting means to which the power of the driving source is transmitted by the power switching transmission means, and then vacated on the back side of the loading platform, and then (6) The two pallets in the two transfer partition areas are pushed in from the rear end side toward the back side by the operator through the two partition areas emptied on the back side of the loading platform, Two predetermined rows of each pallet in the front-rear direction of the loading platform are transferred from the rear end side to the back side by one pitch, and then (7) movement of the pallets is restricted by the pallet movement restriction / release means.
Here, in the case of the above-mentioned [2], an appropriate timing from the completion of the step (1) to the start of the step (6) {preferably during the steps (2) to (5) At an appropriate timing}, it is possible to load / unload the cargo on / from the pallet in the transfer partition area.

  In the cargo circulation method, for example, the pallet movement restriction state and / or release state by the pallet movement restriction / cancellation unit can be notified by the notification unit provided in the driver's seat of the cargo vehicle.

Hereinafter, the present invention will be described in detail with reference to the drawings.
(1) Configuration of Freight Vehicle A freight vehicle 1 according to this embodiment is provided on a driver's seat 2, a cargo bed 3 connected to the rear of the driver's seat 2, and the cargo bed 3, as shown in FIG. 1. A package circulation device 4 described later is provided. As shown in FIG. 2, a plurality (14 in the drawing) of partitioned areas P that are partitioned into 7 in the front-rear direction and 2 in the left-right direction are set in the cargo bed 3. Among these partition areas P, one area at the right corner of the rear end of the loading platform is set as a transfer partition area Pa. The loading platform 3 has a double floor structure, and a pallet (described later) travels on the high floor surface, and a load circulating device 4 is disposed on the low floor surface.
In this embodiment, as shown in FIG. 1, a cargo Q, which is obtained by storing a product (for example, a bread product) produced in a production factory in a dedicated container (for example, a bag) or the like, is a freight vehicle. An example is shown in which the system is loaded on one loading platform 3 and delivered to a large number of stores, and applied to a system that collects empty loads from each store.

(2) Configuration of the Baggage Circulation Device As shown in FIGS. 2 to 4, the baggage circulation device 4 includes a plurality of pallets 5, front and rear transfer conveyors 6, left and right transfer conveyors 7, power switching transmission means 8, and pallets. Movement restriction / cancellation means 9 (hereinafter also simply referred to as restriction / cancellation means 9).

  Each pallet 5 is prepared in a number (13) corresponding to all the partition areas P other than the transfer partition area Pa. In addition, each pallet 5 is standardized to have substantially the same planar shape as the partition area P. Each pallet 5 is formed in a dish shape in which only the rear side of the loading platform 3 is opened as a loading / unloading / loading space for luggage. Further, on the lower surface of each pallet 5, rolling balls 11 are rotatably supported at the four corners, and locked pieces 12 a and 12 b to be locked with locking pieces described later at the center. (Illustrated as “locked portion” according to the present invention).

  The front-rear transfer conveyor 6 is provided across two partition regions P adjacent in the front-rear direction on the back side of the loading platform 3. Moreover, this front-back transfer conveyor 6 has the plate-shaped support base 13 fixed to the loading platform 3, as shown to FIGS. A chain member 15 is wound between a pair of sprockets 14 a and 14 b that are rotatably supported at a predetermined interval in the longitudinal direction of the support base 13. Two substantially L-shaped locking pieces 16 (illustrated as “locking portions” according to the present invention) are attached to the chain member 15 at equal intervals. A limit switch LS2 (see FIGS. 6 and 8) that is electrically connected to the control means described later is provided on the movement locus of the locking piece 16, and the position of the locking piece 16, that is, the limit switch LS2, that is, The front-rear transfer conveyor 6 can detect the front-rear transfer amount of one pitch of the pallet 5 (package).

  The left and right transfer conveyor 7 is provided over two partition regions P adjacent in the left and right direction on the back side of the loading platform 3. The left and right transfer conveyor 7 has substantially the same structure as the front and rear transfer conveyor 6. That is, as shown in FIG. 5, the chain member 20 is wound between a pair of sprockets 19a and 19b rotatably supported at a predetermined interval in the longitudinal direction of the support base 18 fixed to the loading platform 3. . Two substantially L-shaped locking pieces 21 (illustrated as “locking portions” according to the present invention) are attached to the chain member 20 at equal intervals. A limit switch LS1 (see FIG. 8) that is electrically connected to a control means (described later) is provided on the movement locus of the locking piece 21, and the position of the locking piece 21, that is, left-right transfer is provided by the limit switch LS1. A left-right transfer amount of one pitch of the pallet 5 (cargo) by the conveyor 7 can be detected.

  As shown in FIG. 5, the power switching transmission means 8 includes a drive motor 23, first and second rotating shafts 24a and 24b, first and second one-way clutches 25a and 25b, and control means 26 (FIG. 8). Reference). One end of the first rotating shaft 24 a is connected to the output shaft 23 a of the drive motor 23. On the other end side of the first rotating shaft 24a, a first one-way clutch 25a that rotates only in one direction and idles in the other direction is provided. A sprocket 19a constituting the left and right transfer conveyor 7 is formed on the outer periphery of the first one-way clutch 25a. Further, one end side of the second rotating shaft 24b is connected to the middle of the first rotating shaft 24a through a bevel gear 27. A second one-way clutch 25b that rotates only in one direction and idles in the other direction is provided on the other end side of the second rotating shaft 24b. A sprocket 14a constituting the front and rear transfer conveyor 6 is formed on the outer periphery of the second one-way clutch 25b.

With such a configuration, when the drive motor 23 is rotationally driven in the forward direction (indicated by an arrow a in FIG. 5), the first and second rotating shafts 24a and 24b are moved in a predetermined direction (indicated by an arrow b in FIG. 5). The second one-way clutch 25b is disabled and the first one-way clutch 25a is enabled, the rotation of the first rotating shaft 24a is transmitted to the left and right transfer conveyor 7, and only the left and right transfer conveyor 7 is in a predetermined direction (arrows in FIG. 5). c).
On the other hand, when the drive motor 23 is rotationally driven in the reverse direction (indicated by an arrow d in FIG. 5), the first and second rotating shafts 24a and 24b are rotated in a predetermined direction (indicated by an arrow e in FIG. 5). The one-way clutch 25a is disabled and the second one-way clutch 25b is enabled, the rotation of the second rotary shaft 24b is transmitted to the front-rear transfer conveyor 6, and only the front-rear transfer conveyor 6 is in a predetermined direction (indicated by an arrow f in FIG. 5). To work.

  Further, as shown in FIG. 8, the control means 26 turns the drive motor 23 in the reverse direction (arrow d in FIG. 5) when an operation signal from an operation switch SW provided on the rear end side of the cargo bed 3 is input. And the front and rear transfer conveyor 6 is operated. Next, when a detection signal is input from the above-described limit switch LS2 provided on the front-rear transfer conveyor 6, the drive motor 23 is rotated in the forward direction (indicated by an arrow a in FIG. 5), and the front-rear transfer conveyor 6 is moved. While stopping, the left-right transfer conveyor 7 is operated. Next, when a detection signal is input from the above-described limit switch LS1 provided on the left and right transfer conveyor 7, the drive motor 23 is stopped, and the front and rear transfer conveyor 6 and the left and right transfer conveyor 7 are stopped.

  As shown in FIGS. 2 and 3, two restriction / release means 9 are provided corresponding to the transfer partition area Pa. Each regulating / releasing means 9 has a pressing lever 31 and a positioning portion 32. The pressing lever 31 is supported by the loading platform 3 so as to be swingable between a position for pressing the pallet 5 (or the load Q) and a position for releasing the pressing. The positioning unit 32 includes an operation lever 33 for positioning the pressing lever 31 at a position where the pallet 5 (or the load Q) is pressed, and a lock mechanism 34 for locking the operation lever 33. Further, as shown in FIG. 8, each regulating / releasing means 9 is provided with limit switches LS3, LS4 (in the present invention) that detect the positioning state of the pressing lever 31, that is, the regulated state of movement of the pallet 5 (or baggage Q). This is exemplified as “state detection means”). Then, the control means 26 turns on and blinks a notification lamp 36 (illustrated as “notification means” according to the present invention) provided in the driver's seat 2 based on the detection results (restricted state) by the limit switches LS3 and LS4. It is designed to notify the same.

(3) Action of Cargo Vehicle Next, the baggage circulation action using the freight vehicle 1 configured as described above will be described. In the drawings used in the following description, the numerals indicate the positions of the partition areas P and Pa, and the alphabet indicates the position of the pallet 5 (or the package Q).

First, pallets (A to M) are arranged in each partition area (1 to 13) except for one transfer partition area (0), and the pallets (A and M) are provided by the restriction / release means 9 and 9. From the state in which the movement of the pallet (A, M) is restricted by the operator, the restriction of the movement of the pallet (A, M) by the restriction / release means 9, 9 is released (see FIG. 9). Next, the pallet (M) in the partition area (13) is pulled out to the partition area (0) by the operator (see FIG. 10). Next, when the operation switch SW is pushed by the operator, the power of the drive motor 23 is transmitted to the front-rear transfer conveyor 6, and each pallet (GL) in the front-rear direction is divided into the partition regions (8-13). ) At a pitch (see FIG. 11). Thereafter, when it is confirmed that the one-pitch transfer by the front-rear transfer conveyor 6 is completed, the power of the drive motor 23 is transmitted to the left-right transfer conveyor 7, and the pallet (F) is transferred left and right to the partition area (7) at one pitch. (See FIG. 12).
During such automatic transfer by the front-rear transfer conveyor 6 and the left-right transfer conveyor 7, the operator loads and unloads the load Q on the pallet (M) in the partition area (0), loads empty loads, and the like. .

  Next, when the completion of one pitch transfer by the left and right transfer conveyor 7 is confirmed, the drive motor 23 is stopped, and one row of pallets (E to M) in the front-rear direction is directed to the back side by the operator. It is pushed in and moved back and forth at a pitch to the partition areas (1 to 6) (see FIG. 13). Next, after repeating the above-described operation as necessary, the movement of the pallets (M, L) is regulated by the regulation / release means 9, 9 by the operator (see FIG. 13). At this time, the movement restriction state of the pallet 5 is detected, and this is notified in the driver's seat 2 by turning on or flashing the notification lamp 36.

(4) Operation of Other Cargo Vehicles Next, the baggage circulation operation using the cargo vehicle 100 different from the cargo vehicle 1 of the above embodiment will be described. In the freight vehicle 100, the same components as those of the freight vehicle 1 are denoted by the same reference numerals, and detailed description thereof is omitted. Further, as a major difference between the freight vehicle 100 and the freight vehicle 1, the cargo bed 3 of the freight vehicle 100 is divided into six in the front-rear direction and two in the left-right direction as shown in FIG. A plurality of partition regions (0 to 17) are set, and among these partition regions (0 to 17), two regions adjacent in the left-right direction on the rear end side of the cargo bed 3 are transport partition regions (0, 6) and the like.

First, a pallet is disposed in each of the partition areas (1 to 5, 7 to 17) excluding the two transfer partition areas (0, 6), and the pallet (A, F) is provided by three restriction / release means 9. , P) from the state where the movement of the pallet (A, F, P) by the three restriction / release means 9 is released by the operator from the state where the movement of the P, P) is restricted (see FIG. 14). Next, the pallet (O, P) in the partition area (16, 17) is pulled out to the partition area (0, 6) by the operator (see FIG. 15). Next, when the operation switch SW is pushed, the power of the drive motor 23 is transmitted to the front-rear transfer conveyor 6 and each pallet (K-N) in the front-rear direction has one pitch in the partition area (13-16). (See FIG. 16). Thereafter, when it is confirmed that the one-pitch transfer by the front-rear transfer conveyor 6 is completed, the power of the drive motor 23 is transmitted to the left-right transfer conveyor 7, and each pallet (J, E) is transferred to the partition area (11, 12) by one. It is moved left and right at a pitch (see FIG. 17). Next, when it is confirmed that the 1-pitch transfer by the left-right transfer conveyor 7 is completed, the power of the drive motor 23 is transmitted to the front-rear transfer conveyor 6, and each pallet (JN) is transferred to the partition areas (13-17). It is moved back and forth at one pitch (see FIG. 18). Next, when it is confirmed that the one-pitch transfer by the front-rear transfer conveyor 6 is completed, the power of the drive motor 23 is transmitted to the left-right transfer conveyor 7, and the pallet (E) is transferred left-right by one pitch to the partition area (12). (See FIG. 19).
In such automatic transfer by the front-rear transfer conveyor 6 and the left-right transfer conveyor 7, the operator loads and unloads the load Q on the pallet (P, O) in the partition area (0, 6) and loads the empty load. Etc. are performed.

  Next, when it is confirmed that the one-pitch transfer by the left and right transfer conveyor 7 is completed, the drive motor 23 is stopped and the pallets (P to D, O to I) in two rows in the front-rear direction are moved back by the operator. It is pushed toward the side and transferred back and forth at a pitch to the partition areas (1 to 5, 7 to 11) (see FIG. 20). Next, after the above operation is repeated as necessary, the movement of the pallet (P, O, N) is regulated by the regulation / release means 9 by the operator (see FIG. 20). At this time, the movement restriction state of the pallet is detected, and this is notified in the driver's seat section 2 by turning on or flashing the notification lamp 36.

(5) Configuration of Baggage Lifting Device Next, the baggage lifting device 40 according to the present embodiment will be described.
As shown in FIGS. 21 to 23, the load elevating device 40 is disposed on the opening end side of the loading platform 3 of the freight vehicle 1 including the load circulating device 4 described above. The luggage lifting device 40 includes a fixing means A, a lifting drive means B, and a plurality (two in the figure) of placing bars C.

As shown in FIGS. 22 and 28, the fixing means A is a square pipe-like frame body 41 that is fixed to the frame of the load circulating apparatus 4 and that is open at the front and rear, and is slidably supported within the frame body 41. And a rectangular pipe-like slide body 42 that is open at the front and rear. An annular portion 43 (illustrated as an “engaged portion” according to the present invention) is provided at the distal end portion of the slide body 42 so as to engage and disengage a tongue-like portion described later. Then, by the sliding movement of the slide body 42, the annular portion 43 is displaceable between a projecting position 44 projecting outward from the cargo bed and a storage position 45 housed inside the cargo bed, and each position. It is designed to be positioned with.
The fixing means A is provided with a power outlet (not shown) that is electrically connected to a battery (not shown) of the freight vehicle 1.

As shown in FIGS. 22 and 23, the elevating drive means B has a box-like lift frame 47 (illustrated as a “frame” according to the present invention) extending in the vertical direction. On the upper surface of the lift frame 47, a drive motor 48 (illustrated as a “drive source” according to the present invention) and a control box for controlling the drive of the drive motor 48 (forward rotation, reverse rotation, stop, etc.). 49 is attached. The control box 49 is provided with an up button 70a, a down button 70b, a power lamp 70c, and the like. The control book 49 is connected to a cable with a plug (not shown) that is inserted into and removed from the power outlet. Further, on the back surface of the lift frame 47, a tongue-like portion 50 (illustrated as an “engagement portion” according to the present invention) that engages and disengages from the annular portion 43 in the vertical direction is provided. The lift frame 47 is stably positioned and set in a substantially vertical state by the engagement between the tongue-like portion 50 and the annular portion 43 with the bottom surface grounded.
In addition, the length, arrangement | positioning position, etc. of the said tongue-shaped part 50 are suitably set so that it can respond to the fluctuation | variation in the height from the ground to a loading platform by the inclination of the ground, unevenness | corrugation, etc.

  As shown in FIG. 23, upper and lower sprockets 51a and 51b and a tension sprocket 51c are rotatably supported on the upper and lower ends of the inside of the lift frame 47. Between these sprockets 51a to 51c, a chain 52 is wound with a predetermined tension. A support shaft 53 is fixed to the lift frame 47 along the longitudinal direction. A block-like elevating member 54 is inserted and supported on the support shaft 53 so as to be movable up and down. As shown in FIGS. 24 and 25, a cover member 55 having a substantially L-shaped cross section is screwed to the elevating member 54. One side surface of the cover member 55 is connected to the chain 52 via a connecting member 56. A worm wheel 58 is integrally provided on the support shaft 57 integral with the sprocket 51a. The worm wheel 58 is engaged with a worm 59 connected to the drive shaft 48 a of the drive motor 48. Accordingly, the drive motor 48 drives the chain 52 through the worm gears 58 and 59 to raise and lower a lift bar described later together with the lift member 54.

  On one side of the cover member 55, one end of a square pipe-shaped lifting bar 60 is pivotally supported. In addition, a receiving portion 55 a having a substantially L-shaped cross section that protrudes outward is formed at the lower end edge of one side surface of the cover member 55. By this receiving part 55a, the bottom part of the one end side of the raising / lowering bar 60 is received, and the raising / lowering bar 60 maintains a substantially horizontal state. An adjustment bolt 62 for finely adjusting the receiving position (height position) of the elevating bar 60 is screwed to the bottom wall of the receiving portion 55a. Further, when the lift bar 60 is swung from the horizontal state to the vertical state on the lower end side of the lift frame 47, the lift bar 60 is accommodated in the lift frame 47.

  The placement bar C is formed by bending both side edges along the longitudinal direction of the thin plate material, as shown in FIGS. Further, the mounting bar C has a connecting member 64 attached to a lower portion on one end side in the longitudinal direction. The connecting member 64 is formed in a square pipe shape that opens in a direction orthogonal to the longitudinal direction of the mounting bar C. The mounting bar C is detachably attached to the lift bar 60 by inserting the connecting member 64 through the lift bar 60. In this mounted state, the fork-like portion 65 is formed by the two placement bars C and the lifting bar 60.

  Further, as shown in FIG. 22, the frame of the load circulating device 40 is accommodated in an inclined position 68 where the flap 67 is inclined outwardly from the cargo bed 3 via the hinge 66 and inward of the cargo bed 3. It is supported so as to be swingable with respect to the storage position 69. The front end portion of the flap 67 located at the inclined position 68 is engaged with one end side of the mounting bar C that rises together with the lifting bar 60.

(6) Operation of the bag lifting device Next, the operation of the bag lifting device 40 configured as described above will be described. In this embodiment, as shown in FIG. 28, the fixing means A, the lifting drive means B, and the two placement bars C, which are separated from each other, are prepared in the frame of the luggage circulation device 4 as a preparation state. It is assumed that the storage space S is formed.

  First, in the fixing means A, the slide body 42 is dragged out of the frame body 41, and the slide body 42 is positioned and set so that the annular portion 43 is positioned at the protruding position 44 (see FIG. 22). Next, the lifting / lowering drive means B is taken out from the storage space S, the tongue-like portion 50 is engaged with the annular portion 43 of the slide body 42 from above, and the lift frame 47 is positioned at a substantially vertical position, The raising / lowering bar 60 accommodated in the lift frame 47 is swung and set so as to be substantially horizontal (see FIGS. 22 and 23). Next, the two placement bars C are taken out from the storage space S, and the connecting member 64 of each placement bar C is inserted from the free end side of the elevating bar 60 to be in a predetermined position so as to form the fork-like portion 65. Set the positioning. Thereafter, the plug of the control box 49 is inserted into a power outlet, and the lighting of the power lamp 70c is confirmed. And the operation | movement of the raising / lowering bar 60 and the mounting bar C (elevation operation | movement) is confirmed by operating the raising button 70a and the lowering button 70b of the control box 49 suitably, and the luggage | load (or the operation | movement) mounted on each mounting bar C (or Elevating and lowering work is performed.

(7) Effects of the embodiment In this embodiment, the automatic transfer of the pallet 5 by the front / rear transfer conveyor 6 and the left / right transfer conveyor 7 and the manual transfer of the pallet 5 by the operator are combined to circulate and transfer the load Q on the loading platform 3. As a result, the operator can load and unload the cargo with a small amount of labor in a short time, and the apparatus as a whole can have a simple and inexpensive structure. Further, the power switching transmission means 8 selectively switches the power of one drive motor 23 to one of the front and rear transfer conveyors 6 and the left and right transfer conveyors 7 through the first and second one-way clutches 25a and 25b. Since the transmission is performed, the structure can be made extremely simple and inexpensive as compared with the conventional one that requires at least two drive sources. Further, the cargo Q is circulated by using the pallet 5 standardized according to the size of the loading platform 3, and the movement of the pallet 5 to the transfer partition area Pa is regulated by the regulation / release means 9. Therefore, it is possible to suppress the collapse of the cargo when the cargo vehicle 1 is traveling.

  Further, in this embodiment, limit switches LS3 and LS4 for detecting the restricted state of movement of the pallet 5 by the restricting / releasing means 9 are provided, and the detection results of the limit switches LS3 and LS4 are displayed on the driver's seat 2 of the freight vehicle 1. Since the notification lamp 36 for notification is provided, the operator can check the regulated state of the pallet 5 in the driver seat portion 2. As a result, the operator can drive the cargo vehicle safely and without collapsing with the regulated state of the pallet 5.

  In this embodiment, the power switching transmission means 8 includes a drive motor 23, first and second rotating shafts 24a and 24b, first and second one-way clutches 25a and 25b, and a control means 26. By controlling the rotation direction (forward / reverse) of the drive motor 23, the power is selectively switched and transmitted to one of the front and rear transfer conveyors 6 and the left and right transfer conveyors 7. A very simple and inexpensive structure can be obtained.

  Further, in this embodiment, the pallet 5 is formed in a dish shape in which the rear end side in the front-rear direction of the loading platform 3 is opened, so that the load collapse of the load Q placed on the pallet 5 can be prevented more reliably. At the same time, the loading / unloading / loading operation of the load Q on the pallet 5 can be easily performed.

  Further, in this embodiment, the rolling balls 11 are supported to roll freely at the four corners of the lower surface of the pallet 5 and provided to the front and rear transfer conveyors 6 and the left and right transfer conveyors 7 at the center of the lower surface of the pallet 5. Since the to-be-latched pieces 12a and 12b to be latched on the latching pieces 16 and 21 are provided, the pallet 5 can be smoothly and stably transported on the loading platform 3.

Further, in this embodiment, since the load elevating device 40 having the fixing means A, the elevating drive means B, and the plurality of placement bars C is provided on the opening end side of the cargo bed 3, the load with respect to the cargo handling circulation device 4 is provided. Q loading and unloading work can be reduced. Further, since the fork-like portion 65 formed by the raising / lowering bar 60 and the plurality of placement bars C is moved up and down, the operator enters the gap between the fork-like portions 65, and each placement bar C and The baggage Q can be pushed into and pulled out from the baggage circulation device 4. Therefore, it is not necessary for the operator to get on and off the lifting plate as in the prior art, and the loading bar C on which only the relatively light load Q is placed can be lifted and lowered. As a result, a very simple and inexpensive structure can be obtained.
Further, in the present embodiment, the fixing means A, the raising / lowering driving means B, each loading bar C, etc. can be separated from each other, and they are stored in the storage space S formed between the load circulating device 4 and the loading platform 3. As a result, the storage efficiency can be improved and a simpler and less expensive structure can be achieved.
In this embodiment, since the worm gears 58 and 59 are interposed between the drive motor 48 and the chain 52, the brake effect of the worm gears 58 and 59 eliminates the need to use a brake motor as the drive motor 48. A cheaper motor can be adopted.
In this embodiment, since the freight vehicle 1 is used for the purpose of delivering the cargo to each store and collecting the empty load from each store, the drive motor 48 raises the empty load at the time of loading. A motor having a minimum power may be used, and a more inexpensive structure can be obtained.

  In the present invention, the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the present invention based on the purpose and application. That is, in the above embodiment, the chain drive type elevating drive means B is exemplified, but the present invention is not limited to this. For example, as shown in FIGS. 26 and 27, the lift frame 47 is connected to the drive shaft of the drive motor 48 and lift frame 47. The elevating drive means B ′ may be configured by screwing a female screw body 72 to a screw shaft 71 extending in the longitudinal direction and connecting the female screw body 72 to the elevating member 54 via a connecting member 73. According to such a configuration, in addition to the same operation and effect as in the above embodiment, a braking effect is obtained by screwing the screw shaft 71 and the female screw body 72, and a motor with a brake is used as the drive motor 48. There is an advantage that an inexpensive motor can be adopted without necessity.

  It is used as a technique for delivering various products such as foods, books, parts, and finished products to a large number of stores and homes and collecting empty goods. In particular, it is suitably used as a technology relating to a freight vehicle that delivers and collects bread products in a dedicated container.

It is explanatory drawing for demonstrating the delivery form using the cargo vehicle which concerns on a present Example. It is a top view of the loading platform of the freight vehicle concerning this example. FIG. 3 is a view taken in the direction of arrow III in FIG. 2. FIG. 4 is a view taken along arrow IV in FIG. 2. FIG. 3 is an enlarged view of a main part of FIG. 2. FIG. 6 is a view on arrow VI in FIG. 5. It is the VII-VII sectional view taken on the line of FIG. It is a block diagram for demonstrating the control form by the control means which concerns on a present Example. It is operation | movement explanatory drawing for demonstrating the effect | action by the baggage circulation apparatus which concerns on a present Example. Similarly, it is an operation explanatory view. Similarly, it is an operation explanatory view. Similarly, it is an operation explanatory view. Similarly, it is an operation explanatory view. It is an operation explanatory view for explaining an operation by the load circulation device of other forms. Similarly, it is an operation explanatory view. Similarly, it is an operation explanatory view. Similarly, it is an operation explanatory view. Similarly, it is an operation explanatory view. Similarly, it is an operation explanatory view. Similarly, it is an operation explanatory view. It is a perspective view for demonstrating the load raising / lowering apparatus which concerns on a present Example. It is a side view of a load lifting apparatus. It is a XXIII arrow line view of FIG. It is principal part sectional drawing of the raising / lowering drive means which concerns on a present Example. It is the XXV-XXV sectional view taken on the line of FIG. It is principal part sectional drawing of the raising / lowering drive means of other forms. It is the XXVII-XXVII sectional view taken on the line of FIG. It is explanatory drawing for demonstrating the isolation | separation state of the luggage lifting / lowering apparatus which concerns on a present Example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,100; Cargo vehicle, 2; Driver's seat part, 3; Loading platform, 4; Baggage circulation device, 5; Pallet, 6: Front and rear transfer conveyor, 7: Left and right transfer conveyor, 8: Power change transmission means, 9; Restricting / releasing means, 11; rolling balls, 12a and 12b; locked pieces, 16, 21; locking pieces, 23; drive motor, 23a; output shaft, 24a; first rotating shaft, 24b; Shaft, 25a; first one-way clutch, 25b; second one-way clutch, 26; control means, 36; notification lamp, 40; luggage lifting device, 43; annular portion, 47; lift frame, 48; drive motor, 50; Shaped part, 54; elevating member, 60; elevating bar, A; fixing means, B; elevating drive means, C: placement bar, LS3, LS4; limit switch, P; compartment area, Pa; ;Baggage.

Claims (12)

It is provided corresponding to each of the other divided areas excluding at least one transfer divided area among a plurality of divided areas formed by dividing the cargo carrier bed in the front-rear direction and the left-right direction, and can be transferred on the load bed. There are multiple pallets that can be loaded with luggage,
Front-rear transport means for transporting each pallet in the front-rear direction of the loading platform in the front-rear direction;
Left and right transport means for transporting each row of pallets in the left and right direction of the loading platform in the left and right direction;
Power switching transmission means having one driving source and capable of switching and transmitting the power of the driving source to one of the front and rear transfer means and the left and right transfer means;
A cargo circulation device for a freight vehicle, comprising: pallet movement regulation / release means for regulating / releasing movement of the pallet to the partition area for transfer.   A state detection means for detecting a restriction state and / or a release state of the movement of the pallet by the pallet movement restriction / cancellation means, and a notification provided in a driver's seat of the freight vehicle and notifying a detection result of the state detection means The cargo circulation device for a freight vehicle according to claim 1, further comprising means.   2. The front-rear transfer means is a front-rear transfer conveyor that transfers the pallets in the front-rear direction at one pitch, and the left-right transfer means is a left-right transfer conveyor that transfers the pallets at a pitch in the left-right direction. Or the cargo circulation apparatus of the freight vehicle as described in 2.   The power switching transmission means connects and releases the first rotating shaft and the second rotating shaft connected to the output shaft of the driving motor as the driving source, and the first rotating shaft and the left and right transfer conveyor. The cargo vehicle according to claim 3, further comprising: a one-way clutch; a second one-way clutch that connects / releases the second rotating shaft and the front / rear transfer conveyor; and a control unit that controls forward / reverse driving of the drive motor. Baggage circulation device.   The cargo circulation device for a freight vehicle according to any one of claims 1 to 4, wherein the pallet has a dish shape formed by opening a rear end side in a front-rear direction of the loading platform.   6. The pallet according to claim 1, further comprising: a traveling wheel that travels on the loading platform; and a locked portion that is engaged with and disengaged from a locking portion that is provided on each of the front and rear transfer means and the left and right transfer means. The cargo circulation device for a freight vehicle according to any one of the above.   A cargo vehicle comprising the cargo circulation device according to any one of claims 1 to 6 in a cargo bed.   A load elevating device disposed on the opening end side of the loading platform, the luggage lifting device being provided on the luggage circulating device and / or the loading platform, and detachably provided on the securing device; 8. A freight vehicle according to claim 7, comprising a lift driving means having a lift bar that can be moved up and down, and a plurality of placement bars on which one end side is detachably provided and places a load.   The elevating drive means is provided on a frame, an engaging portion provided on the frame and engageable with the fixing means, a drive source provided on the frame, and supported by the frame so as to be raised and lowered. The freight vehicle according to claim 8, further comprising: an elevating member to be moved, and the elevating bar supported by the elevating member so as to be swingable about a horizontal axis. A luggage circulation method using the freight vehicle according to any one of claims 7 to 9,
The plurality of partition areas divide a large number of the loading platforms in the front-rear direction and are divided into two in the left-right direction, and the transfer partition area is set to one on the rear end side in the front-rear direction of the loading platform. Yes,
First, the pallet movement restriction is performed in a state where the pallet is provided corresponding to each of the other division areas excluding the transfer division area and the movement of the pallet is restricted by the pallet movement restriction / release means. Canceling the movement restriction of the pallet by the releasing means, and pulling out the pallet in the partition area adjacent to the transfer partition area in the left-right direction to the transfer partition area;
Next, the power of the driving source is transmitted to the front / rear transfer means by the power switching transmission means, and the front / rear transfer means passes through the partition area emptied on the rear end side of the load bed. Transfer each pallet in the front / rear direction at a pitch from the back to the rear end,
Next, the power switching transmission means transmits the power of the drive source to the left and right transfer means, and the left and right transfer means passes the partition area emptied on the back side of the load bed to the back side of the load bed. Pallets are transported at a pitch in the left-right direction,
Thereafter, the pallets in the transfer partition region are pushed from the rear end side toward the back side through the partition region that is empty on the back side of the loading platform, and each pallet in one row in the front-rear direction of the loading platform. From the rear end side to the back side at a pitch,
Next, the cargo circulation method for a freight vehicle, wherein the movement of the pallet is restricted by the pallet movement restriction / release means. A luggage circulation method using the freight vehicle according to any one of claims 7 to 9,
The plurality of partition areas divide a large number of the loading platforms in the front-rear direction and are divided into three in the left-right direction, and the transfer partition areas are adjacent to each other on the rear end side in the front-rear direction of the loading platform. Is set,
First, the pallet movement restriction is performed in a state where the pallet is provided corresponding to each of the other division areas excluding the transfer division area and the movement of the pallet is restricted by the pallet movement restriction / release means. -The movement restriction of the pallet by the releasing means is canceled, and the two pallets in the partition area adjacent to the transfer partition area in the left-right direction and the partition area adjacent to the partition area in the front-rear direction are used for the two transfers. Pull it into the compartment,
Next, the power of the driving source is transmitted to the front / rear transfer means by the power switching transmission means, and the front / rear transfer means passes through the partition area emptied on the rear end side of the load bed. Transfer each pallet in the front / rear direction at a pitch from the back to the rear end,
Next, power of the drive source is transmitted to the left and right transfer means by the power switching transmission means, and the left and right direction of the load platform is separated by the left and right transfer means through a partition area that is empty on the back side of the load platform. 1 row of each pallet is transported at 1 pitch in the left-right direction,
Thereafter, the power switching transmission means transmits the power of the drive source to the front / rear transfer means, and the front / rear transfer means causes the front and rear Each pallet in one direction is transferred at a pitch from the back to the rear end,
Next, the power of the drive source is transmitted to the left and right transfer means by the power switching transmission means, and the back of the cargo bed is passed through the partition area emptied on the back side of the load bed by the left and right transfer means. Transport the side pallet in the left-right direction at 1 pitch,
Next, the two pallets in the two transfer partition regions are pushed in from the rear end side toward the back side through the two partition regions emptied on the back side of the loading platform, and the longitudinal direction of the loading platform 2 rows of pallets are transferred at a pitch from the rear end to the back,
Then, the cargo circulation method for a freight vehicle, wherein the movement of the pallet is restricted by the pallet movement restriction / release means.   The cargo of the freight vehicle according to claim 10 or 11, wherein a notification means provided in a driver's seat of the freight vehicle notifies the restriction state and / or the release state of the movement of the pallet by the pallet movement restriction / release means. Circulation method.

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