JPH0540008Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a pallet cargo conveying device that can automatically carry in and out cargo loaded on pallets.

(Prior Art) Conventional pallet cargo conveying devices of this type have a drive source such as a motor and use this as power to carry in and out cargo. Further, in the conventional pallet cargo conveying apparatus of this type, it was necessary to provide a space for taking out the cargo at the rear.

(Problems to be Solved by the Invention) However, the pallet cargo conveying apparatus using a motor or the like as a drive source has the problem of high equipment costs and high maintenance costs. Furthermore, conventional pallet cargo conveying devices have had the problem of having to provide a space for loading and unloading the cargo from the rear or a loading and unloading space for loading and unloading the cargo from the side.

The purpose of the present invention is to provide a pallet cargo conveying device that can automatically load and unload cargo without using a drive source such as a motor, and that can load and unload cargo from one side. It is in.

(Means for solving the problem) The present invention was made to achieve the above purpose.
A vertically elongated base, a group of free rollers provided along the longitudinal direction on both sides of the base for conveying pallets loaded with cargo, and a roller group between these free roller groups. a conveyance cart having a low height and freely movable in the longitudinal direction of the base; and a conveyance cart having a length such that the tip protrudes from the upper surface of the free roller group when standing up, and the tip is in an upright state in a free state. a plurality of pallet hooks that are pivotally supported on the conveyance vehicle so that they can be raised and lowered and are provided longitudinally at intervals equal to the maximum width of movement of the conveyance vehicle; A pusher piece that can move freely in the longitudinal direction of the base provided on the cargo input/output end side of the platform, a forward driving tension member connecting the pusher piece and the front end of the transport vehicle, and a cargo input/output member of the base. a winding device that makes a U-turn on the forward driving tension member at the end side;
A pallet cargo comprising a retracting drive tensile member having one end connected to the rear end of the transport vehicle, and a biasing means connected to the other end of the retracting drive tension member for pulling the transport vehicle rearward. The conveyance device is characterized in that a pallet hook pusher is provided which is supported by the base at intervals corresponding to the pallet hooks and which presses down and controls each of the pallet hooks in a down position at a position where the conveyance vehicle is completely retracted. The present invention provides a pallet cargo conveying device.

(Function) In such a pallet cargo conveying device, when the push piece 15 is pushed toward the rear of the base 1 with the fork 22 of the forklift on the cargo input/output end 14 side of the base 1, the push piece 15 moves forward in a U-turn shape. The carriage 5 connected by the driving tension member 17 is driven forward.

With this forward movement of the carrier 5, each pallet hook presser 11 is positioned between the front and rear pallet hooks 9, the pallet hooks 9 become free, and each pallet hook 9 rotates clockwise in FIG. 2 due to its own weight on the rear end 9B side. Then, the tip 9A is erected as shown in FIG. 3, and is locked to the bottom of the pallet 12 placed on the free roller group 2, and the conveying carriage 5 and the pallet 12 are integrated by the pallet hook 9. When the push piece 15 is further pushed in this state, the pallet 12 is also driven forward as the carrier 5 moves forward, and the cargo 13 on the pallet 12 is moved toward the cargo input/output end 14 as the pallet 12 moves forward. When the pallet 12 is sent forward, the fork 22 is raised and the cargo 13 on top is carried out via the pallet 12.

When the fork 22 moves backward and the pushing force by the fork 22 is no longer applied to the pusher piece 15, the push piece 15 is transported by the traction force of the biasing means 20 acting rearward on the rear part of the transport vehicle 5 via the backward driving tension member 19. The truck 5 is driven backward. When the carriage 5 retreats, each pallet hook 9 becomes free, and its tip 9A stands up again and engages with the lower surface of the following pallet 12, and as it retreats, the longitudinal groove 6
When the carriage 5 hits the rear stopper, the carriage 5 returns to its original position. In this way, one cargo removal cycle is completed. When the same operation is repeated, the following pallet 12 is sent out to the front side in the same way, and is carried out by lifting the fork 22.

The cargo 13 is carried onto the base 1 at the cargo entrance/exit end 1.
On the 4th side, the cargo 13 is placed on the free roller group 2 with the fork 22 of the forklift together with the pallet 12.

Next, when the cargo 13 is pushed by the fork 22, the cargo 13 is pushed inward by the rolling action of the free roller group 2. In this way, when the cargo 13 is placed on the free roller group 2 on the cargo input/output end 14 side of the base 1 and pushed in, each cargo 13 is pushed by the cargo 13 on the front side and pushed into the back one after another.

(Example) Examples of the present invention will be described below with reference to FIGS. 1 to 4. The pallet cargo conveying apparatus of this embodiment has a base 1 that is placed on the loading platform of a trailer, truck, or the like. The base 1 is formed vertically, and free roller groups 2 are provided along the longitudinal direction on both sides of the base 1 in the width direction. Each free roller group 2 includes free rollers 4 rotatably supported in roller housing holes 3 of a base 1 at predetermined intervals in the longitudinal direction.

In the center between both free roller groups 2, a vertically elongated conveyance cart 5 is disposed with a height lower than the height of these free roller groups 2 and can freely run in the longitudinal direction of the base 1. It runs back and forth in a longitudinal groove 6 provided in the. Transport trolley 5
The vehicle has a structure in which wheels 8 are supported at predetermined intervals in the longitudinal direction on a rectangular frame 7. The frame 7 of the transport vehicle 5 has a length such that the tip 9A protrudes from the upper surface of the free roller group 2 when standing up.
A is in an upright state and is pivotally supported by a support shaft 10 on a conveyor truck 5 so as to be able to rise and fall freely, and a plurality of pallet hooks 9 are provided in a staggered manner at predetermined intervals in the longitudinal direction. Pallet hook pushers 11 are supported on the base 1 in a staggered manner at intervals of the staggered arrangement rows of the pallet hooks 9.
Each time the pallet hook 9 is faced, the pallet hook 9 is pressed down and placed in a prone position. In the case of this embodiment, the pallet hooks 9 are arranged and supported at intervals of approximately the maximum width in the forward and backward movement of the transport vehicle 5, and the pallet hook pressers 11 are also arranged at intervals corresponding to the attachment intervals. and,
Except for the corresponding pallet hooks 9 and pallet hook pressers 11, none of the pallet hooks 9 and the pallet hook pressers 11 interfere with each other in the front-back arrangement and the staggered arrangement. The pallet 12 is configured to carry cargo 13 on top of it and ride astride a group of free rollers on both sides to be transported. Further, as shown in FIG. 1, the pallet hook pressers 11 are placed at each location where all the pallet hooks 9 are placed in a down position when the conveyance vehicle 5 is completely retracted.

There is a push piece 15 on the cargo input/output end 14 side of the base 1.
The guide means 1 is movable in the longitudinal direction of the base 1.
It is guided by 6. The height of the pusher piece 15 is determined to be lower than the upper surface of the free roller group 2. The pusher piece 15 and the front end of the carriage 5 are interconnected by a forward drive tension member 17 made of wire.
A forward driving tension member 17 is installed on the cargo inlet/output end 14 side of the base 1.
A winding tool 18 consisting of a pulley is rotatably provided to make a U-turn. Transport trolley 5
One end of a retraction drive tension member 19 is connected to the rear end. A biasing means 20 such as a weight or a balancer for pulling the carrier vehicle 5 backward is attached to the other end of the backward drive tension member 19 . A pulley 21 is provided at the rear end of the base 1 to change the direction of the retraction drive tension member 19. Biasing means 2
A spring can also be used as the zero.

When carrying the cargo 13 into such a pallet cargo transport device, as shown in Fig. 2, the cargo 13 placed on the pallet 12 is moved by placing it on the fork 22 for loading the cargo on the forklift. and place it on the free roller group 2 at the cargo entry/exit end 14 of the base 1. In this state, the fork 22 is removed, the fork 22 pushes the cargo 13 toward the rear of the base 1, and the cargo 13 is slid on the free roller group 2,
The cargo inlet/output end 14 of the free roller group 2 is opened, and the next cargo 13 is carried in one after another in the same manner and stored on the base 1.

When carrying out the cargo 13 from the base 1, the first
As shown in FIG. 3 and FIG. 3, when the pusher piece 15 is pushed toward the rear of the base 1 by the fork 22, the carrier 5, which is connected to the pusher piece 15 by the forward drive tension member 17, moves for a U-turn. It is driven forward by the presence of the winding tool 18. When the transport vehicle 5 moves forward, each pallet hook presser 11 is positioned between the front and rear pallet hooks 9, and each pallet hook 9 is moved forward.
becomes free, each pallet hook 9 rotates clockwise in FIG. 2 due to its own weight on the rear end 9B side, and the tip 9A stands up as shown in FIG. 3 and is locked to the lower surface of the pallet 12. The pallet 12 and the carriage 5 are integrated. In such a situation,
The carrier vehicle 5 and the pallet 12 come to move forward together. Therefore, when the push piece 15 is pushed further, the cargo 13 on the pallet 12 together with the carrier 5 slides on the free roller group 2 toward the cargo input/output end 14 side. In this case, the pallet 12 is pushed in by the pusher piece 15 with the fork 22.
moves to the cargo entry/exit end 14 side, and when the pusher piece 15 is pushed in as much as possible with the fork 22, the pallet 12
is the cargo entry/exit end 14 for one set movement stroke.
It is carried out to the side. When the unloaded pallet 12 moves to the vicinity of the end on the cargo inlet/output end 14 side, the fork 22 carries out the cargo 13 together with the pallet 12. As the fork 22 retreats, the push piece 15 also retreats, and at the same time the biasing means 2
0, the carriage 5 is pulled back and moved backward, returns to its original position, and the pallet hook 9 is brought to a lying position by the pallet hook pusher 11.

Furthermore, at the stage when the transport vehicle 5 begins to move backward, the tips 9A of each pallet hook 9 become free from engagement with the pallet 12, maintain the upright state as shown in FIG. Step back while stroking. During this retreat, Fork 22
When pushed in to move the carrier 5 forward, the pallet hook 9 immediately engages the underside of the pallet 12 at that position, working to advance the pallet 12, allowing it to be carried out little by little. By pushing the push piece 15 with the fork 22 in this way, the carrier 5 moves forward by that amount, and the cargo 13 is carried out by a stroke corresponding to the forward movement.

In the embodiment described above, two transport vehicles 5 are arranged between the free roller groups 2 on both sides, but one transport vehicle 5 may also be arranged.

(Effects of the invention) As explained above, in this invention, the pusher piece and the conveyance truck are connected in a U-turn shape using a forward drive tension member, so the pusher piece is moved behind the base by a forklift on the cargo input/output side. Conversely, by pushing, the carrier can be moved forward, and cargo can be automatically carried out without a drive source. Moreover, the cargo can be easily carried in by pushing each cargo in sequence on the group of free rollers. Therefore, according to the present invention, even if it does not have a power source, it has a function of loading and unloading, has a simple structure, reduces equipment cost, and can be easily maintained. Furthermore, in the present invention, the conveyance vehicle is equipped with a pallet hook, and the ups and downs of this pallet hook are controlled by the pallet hook pusher on the base side, so that the pallet and the conveyance vehicle can be easily connected and disconnected by remote control. Instead, the pallet hook pusher maintains the corresponding pallet hook in a down state when the conveyance vehicle is completely retracted, so that a plurality of cargoes can be stored while sequentially pushing them from the cargo input/output end side.

Furthermore, if the pallet hook is controlled by the pallet hook pusher on the base side as in the present invention, the structure of the conveying carriage can be simplified.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of a pallet cargo conveying device according to the present invention, and FIGS. 2 and 3 are longitudinal cross-sectional views showing the state of the device of this embodiment at the time of loading and unloading.
FIG. 4 is an enlarged view of the main parts of the apparatus of this embodiment. DESCRIPTION OF SYMBOLS 1...Base, 2...Free roller group, 5...Transportation truck, 9...Pallet hook, 11...Pallet hook presser, 12...Pallet, 13...Cargo, 14...Cargo input/output end, 15... ...Putsushiyu piece,
17...forward drive tension member, 18...winding tool,
19... Retraction drive tension member, 20... Biasing means, 2
1...Pulley, 22...Fork.

Claims (1)

[Scope of utility model registration request] A vertically elongated base, a group of free rollers provided along the longitudinal direction on both sides of the base for conveying pallets loaded with cargo, and a roller group between these free roller groups. a conveyance cart having a low height and freely movable in the longitudinal direction of the base; and a conveyance cart having a length such that the tip protrudes from the upper surface of the free roller group when standing up, and the tip is in an upright state in a free state. a plurality of pallet hooks that are pivotally supported on the conveyance vehicle so that they can be raised and lowered and are provided longitudinally at intervals equal to the maximum width of movement of the conveyance vehicle; A pusher piece that can move freely in the longitudinal direction of the base provided on the cargo input/output end side of the platform, a forward driving tension member connecting the pusher piece and the front end of the transport vehicle, and a cargo input/output member of the base. A winding tool that makes a U-turn on the forward driving tension member at an end side, a backward driving tension member whose one end is connected to the rear end of the transport vehicle, and a winding device connected to the other end of the backward driving tension member. and a biasing means for pulling the carrier to the rear, the pallet cargo is supported by the base at intervals corresponding to the pallet hooks, and each of the pallet hooks is supported at a position where the carrier is fully retreated. What is claimed is: 1. A pallet cargo conveying device, characterized in that a pallet hoist is provided with a pallet hoist pusher for controlling the pallet hoist by pushing it down into a down position.