JP2004338790A - Cargo transfer box with cargo handling equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable the selective move of a movable partition wall, which moves in synchronization with a floor board movable back and forth, or shifts relatively, and prevent the turn of the partition wall to the left or right to keep it stable in a load transfer box with a cargo handling equipment for loading and unloading, the cargo handling equipment having the floor board arranged on the bottom to be movable back and forth by a cylinder and the movable partition on the floor board which moves independently when the partition is locked while moves with the partition when the partition is unlocked. <P>SOLUTION: A sprocket 3, having circumferentially formed projections engaging with circular holes of chains 2a, 2b, is set on the pedestal of the movable partition 12 to be rotated by a motor 7 rotating in both directions. The first chain 2a is connected to the rear end side of the box 10 on one end while connected to the front end side on the other end. The second chain 2b is connected to the front end side of the box 10 on one end while connected to the rear end side on the other end. The chains 2a, 2b are arranged to be crossed and stretched, and are engaged with the sprocket 3 in the middle of the stretch. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for unloading a cargo loaded without any pallets in a box without a large modification of a cargo box such as a container or a truck bed, and without providing a large device outside or inside. Loading and unloading operations can be mechanized, eliminating the heavy labor of manual unloading, which can lead to the aging of unloading and loading workers, and also to the improvement of work efficiency. The present invention relates to a load carrying box with a cargo handling device that can be used.
[0002]
[Prior art]
2. Description of the Related Art In recent years, container transportation has been increasing in terms of reducing transportation costs and packaging costs, shortening transportation periods, and preventing cargo pain. However, since the containers are box-shaped and most of the containers have an entrance at one rear end, a crane or the like cannot be used. In addition, in order to increase the loading efficiency and prevent the load from collapsing, the loads are piled up without any gaps in a bulk state without being loaded on a pallet. For this reason, conveyors and forklifts can be used for transferring and transporting the load, but the load is relied on manually.
[0003]
The unloading work of the container requires the work of transporting and transporting the load inside the container to the outside of the container.However, loose objects such as chips often require manual work, which is heavy work, and is preferable for work safety. Absent. In particular, with the aging of workers in recent years, there is a need for a cargo-handling device that eliminates the work of lower back pain as a countermeasure for lower back pain. Conventionally, there is a crane that meets this condition, but the container is not used because of the drawbacks that it is difficult to mount and the working speed is slow.
[0004]
The inventor has previously filed the following application as a container with a cargo handling device for loading and unloading cargo.
[0005]
[Patent Document 1]
Japanese Patent Application No. 2000-307713 (Japanese Patent Application Laid-Open No. 2002-114290)
[0006]
As shown in FIG. 5, this is a movable partition 12 which moves in the front-rear direction as a load discharging device in a box 10 which is a container outer shell, or in addition to this, can be moved back and forth which is laid below the movable partition 12. The floor plate 13 is provided.
[0007]
As described above, the container is provided with the cargo handling device, and it is possible to mechanize the unloading operation of the load, such as loose objects such as chips, loaded without any pallet in the container without any gap. The container has a movable bulkhead that moves in the front-rear direction as a load discharging device or a loading device in the outer shell box, and in the case of discharging the load, chips and other loads are moved in the direction of the load discharge port by this movable partition. It can be moved and discharged out of the container.In the case of loading, the load is sent to the back side by this movable bulkhead, and the gap is opened without major modification of the container and without pallet inside the container without installing large scale equipment outside. It is possible to mechanize the unloading operation or the loading operation of the loaded load without any trouble.
[0008]
The cargo such as chips is placed on the floor plate 13 in the container box body, moves backward with the floor plate 13, and the rear cargo goes out of the box body. At this stage, the cargo is on the floorboard, but if the movable bulkhead is locked to the box side and the floorboard is pulled forward while holding down the front end of the cargo, the floorboard below the rear cargo disappears and falls.
[0009]
The lock between the movable bulkhead and the box body is released, the cargo is moved rearward together with the floor plate of the cargo, and the subsequent operation is repeated to sequentially drop the cargo from the rear.
[0010]
Even if a cylinder is used to move the floorboard back and forth, the stroke may be small and small, and the movable partition does not push out loads such as chips. It doesn't have to be so robust.
[0011]
On the other hand, when used as a cargo handling device for loading, contrary to the above operation, the movable partition is located at the rearmost position, and after loading a load such as chips on the floor plate in the container body at the front side, this slide is performed. It moves forward (back side of the box) with the board, and at this stage, the cargo is on the floor board. The floor plate is pushed backward while the movable partition is locked on the box side and the rear end of the load is suppressed, then the lock between the movable partition and the box side is released, and the load is moved forward together with the floor plate of the load. , And subsequent operations are repeated to sequentially move the cargo from the rear to the front.
[0012]
[Problems to be solved by the invention]
As described above, when the movable bulkhead 12 that moves in the front-rear direction and the floor plate 13 that can move back and forth are laid below the movable bulkhead 12 as the load discharging device, the movable bulkhead 12 moves together with the floor plate 13. In addition, it is necessary to provide both movement preventing means for moving only the floor plate 13 and keeping the movable partition 12 locked, and to make them work alternately and reliably.
[0013]
In the Patent Document 1, the movable partition 12 is placed only on the base plate 12a in contact with the floor plate 13, and a so-called telescopic cylinder 14 of multi-stage expansion and contraction is provided between the box 10 and the movable partition 12. , Which makes it possible to move back and forth. On the other hand, a cylinder 15 that reciprocates is provided between the floor plate 13 and the box 10 so that the cylinder 15 can move the floor plate 13 in the front-rear direction.
[0014]
The floor plate 13 is moved in the front-rear direction by the cylinder 15, and as a first step, when the floor plate 13 moves in the direction of the load discharge port 11 (forward direction), the load on the floor plate 13 also moves so as to be carried thereby. . Further, the telescopic cylinder 14 is extended to move the movable partition 12 in the direction of the load discharge port 11 (forward direction) in synchronization with the floor plate 13.
[0015]
Next, as a second stage, the movable partition 12 is fixed by fixing the telescopic cylinder 14 to stop the load at that position, and only the floor plate 13 is moved by the cylinder 15 in the counter load discharge direction (return direction). Hereinafter, the first step and the second step are sequentially repeated to move the movable partition 12 and the load to the load discharge port 11, and discharge the load from the load discharge port 11 to the outside of the container.
[0016]
As a fixing means 16 for fixing the movable partition 12 to the box 10, instead of the telescopic cylinder 14, a rack rail having locking projections 17a arranged above the side plate of the box 10 as shown in FIG. Alternatively, a pendulum-type or seesaw-type lock bar 17b may be provided at the upper left and right ends of the movable partition wall 12 to be engaged with the locking projections 17a.
[0017]
However, the use of such a telescopic cylinder 14 increases the size of the device and makes it difficult to control it. In the fixing means 16, the operation is inevitably intermittent due to the interval between the locking projections 17a. There are also aspects that are difficult to secure.
[0018]
Further, it is necessary for the movable partition 12 to always keep a right angle to the side wall in the box 10 and keep it parallel to the side wall, but it is necessary to stabilize the load, but this is likely to cause a displacement such as turning right and left. There is a possibility that the entire cargo whose end is pressed against the partition wall 12 is deformed.
[0019]
An object of the present invention is to dispose a floor plate which can be moved back and forth by a cylinder at the bottom as a loading / unloading or loading / unloading device, on which only the floor plate moves when locked, and moves with the floor plate when moving. In a load carrying box with a cargo handling device provided with a movable partition, it is possible to selectively and reliably obtain the movement of the movable partition that moves in synchronism with the floor plate that is movable back and forth, or that is relatively displaced, In addition, it is an object of the present invention to provide a load carrying box with a cargo handling device capable of preventing a movement of the movable partition wall from turning left and right and maintaining a stable state.
[0020]
[Means for Solving the Problems]
In order to achieve the above object, the present invention according to claim 1 arranges a floor plate which can be moved back and forth by a cylinder at the bottom as a loading / unloading device provided in a load transport box such as a container or a truck bed. However, on this floor plate, in the load carrying box body with a loading and unloading device provided with a movable partition wall in which only the floor plate moves at the time of locking and moves with the floor plate at the time of movement, a projection is formed around the ring body hole of the chain. A first chain that is provided on the pedestal portion of the movable partition so that the sprocket is driven to rotate by a motor that can rotate forward and reverse, one end is fixed to the rear end of the box, and the other end is fixed to the front end; A second chain having one end fixed to the front end of the box body and the other end fixed to the rear end is stretched in a crossed state, and the middle of these chains is engaged with the sprocket. It is intended to.
[0021]
According to the first aspect of the present invention, in order to unload a load such as chips placed on a floor plate in a load transport box body such as a container, a transfer step of moving the movable partition and the load together with the floor plate, The relative position between the movable bulkhead, the cargo, and the floorboard is changed by sequentially repeating the stop step of retracting the floorboard while locking the movable bulkhead to prevent the cargo from retreating, and the box body is sequentially arranged from the rear cargo. To the outside.
[0022]
In order to move the movable bulkhead and the cargo together with the floorboard, the movable bulkhead and the floorboard are synchronized, but the sprocket is rotationally driven by the motor to forcibly move the cross part in the front-rear direction in the box body, Thereby, the movable partition is moved according to the speed of the floorboard.
[0023]
The first chain and the second chain are stretched around the movable partition in a crossed state, and the movable partition is formed by a cross portion of the cross (the first chain and the second chain are connected to each other). (A part parallel between the intersections), a movement such as turning left and right is prevented, and a stable state can be maintained.
[0024]
On the other hand, when the sprocket is stopped by the rotation locking mechanism, since the sprocket is engaged with the chain, the displacement of the cross portion is also eliminated, the movable partition is fixed, and the stage shifts from the transfer stage to the stop stage.
[0025]
The gist of the present invention described in claim 2 is that the motor is of a mechanism serving as a brake for fixing the rotation of the sprocket when stopped.
[0026]
According to the second aspect of the present invention, in addition to the operation of the first aspect, the stopped state of the motor can be used as the rotation locking mechanism of the sprocket. Simply stopping the motor locks the sprocket and consequently locks the movable bulkhead.
[0027]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional plan view showing one embodiment of a cargo carrying box with a cargo handling device according to the present invention, and FIG. 2 is a vertical sectional side view of the same. A box 10 is a container, and a rear end is a rear end opening 11.
[0028]
In the present invention, similarly to the above-described conventional example, a movable partition wall 12 that moves in the front-rear direction is provided as a load discharging device or a loading device in a box 10, and furthermore, a floor plate ( (Slide plate) 13 was laid.
[0029]
The movable partition 12 is made of steel, and is arranged in a direction parallel to the rear end port 11 assuming that the box 10 is a rectangular parallelepiped. In addition, the movable partition wall 12 has an inclined surface 12b whose lower portion projects more forward on the side facing the rear end opening 11. The floor plate 13 is also made of steel or stainless steel, and may be relatively thin.
[0030]
The movable partition 12 is placed only on the lower surface of the floor plate 13 so as to be in contact therewith. On the other hand, a reciprocating cylinder 15 is provided between the floor plate 13 and the box 10.
[0031]
A first rotator (guide roller) 1 a and a second rotator 1 b are provided below the movable partition 12 so as to be separated from each other in the wall width direction. The fourth rotator 1d is provided in such a manner that the rotator 1c is brought close to the second rotator 1b.
[0032]
One end is fixed to the rear end side of the box body 10 and the other end is fixed to the front end side. The middle of the first chain 2a is extended over the first rotating body 1a and the fourth rotating body 1d. Stretch.
[0033]
Further, one end is fixed to the front end side of the box 10 and the other end of the second chain 2b is fixed to the rear end side. The middle of the second chain 2b is stretched over the second rotating body 1b and the third rotating body 1d. Set up.
[0034]
In this way, the first chain 2a and the second chain 2b are relatively moved between the first rotating body 1a, the third rotating body 1c, the second rotating body 1b, and the fourth rotating body 1d. It will be parallel or nearly parallel in close proximity.
[0035]
As shown in FIG. 4, between the first chain 2a and the second chain 2b, a sprocket 3 having concave portions 4 for fitting one of the continuous annular members of the chain was provided at appropriate intervals. In order to ensure the engagement between the first chain 2a, the second chain 2b and the sprocket 3a, a guide having a curved surface that presses the first chain 2a and the second chain 2b against the sprocket 3 is used. 22 were provided. The guide 22 is joined to the first chain 2a and the second chain 2b, and the curved surface to be pressed is corrugated so as not to hinder the movement.
[0036]
Further, the sprocket 3 is provided on a rotating shaft of a motor 7 capable of rotating forward and backward. The motor 7 is a mechanism that functions as a brake for fixing the rotation of the sprocket 3 when stopped.
[0037]
As another embodiment, the movable partition 12 is placed on a floor plate (slide plate) 13, and when the locking mechanism does not work, the movable partition 12 moves together with the floor plate 13 by friction. It may be something.
[0038]
Next, the usage will be described. In the case of unloading with the container 10 of the present invention loaded on a trailer truck as a container, the rear end port 11 is opened assuming that there is a load in the container 10 as a container. The movable partition 12 is located on the front side of the box 10.
[0039]
When the cylinder 15 is extended, the floor plate 13 moves from the front side to the rear end in the box 10, and at the same time, the motor 7 is driven to rotate the sprocket 3, and the movable partition 12 is also synchronized with the movement of the floor plate 13. The box 10 is moved from the front side to the rear end, and as a result, the load on the floor plate 13 and the movable partition 12 are also moved by that amount.
[0040]
In this state, the first chain 2a is wound halfway around the first rotating body 1a and the fourth rotating body 1d, so that the first rotating body 1a and the fourth rotating body 1d Between the rotating bodies 1d, they are stretched along the width direction of the movable partition 12, and similarly, the second chain 2b is wound halfway around the second rotating body 1b and the third rotating body 1d. The movable partition 12 is crossed by the first chain 2a and the second chain 2b, and the first rotating body 1a, the second rotating body 1b, the third rotating body 1c, and the fourth rotating body 1d are separated. Since the left and right sides of the movable partition 12 at the fulcrum are both pulled back and forth in the front and back of the box body 10, the movement of turning left and right is prevented, and a stable state can be maintained.
[0041]
When the movable partition wall 12 moves together with the floor plate 13 as described above, the first rotating body 1 a, the second rotating body 1 b, the third rotating body 1 c, and the fourth rotating body 1 d are connected to the first chain 2 a. And the second chain 2b slides, and the movable partition 12 moves as it is crossed by the first chain 2a and the second chain 2b.
[0042]
Next, when the cylinder 15 is contracted and the floor plate 13 moves in the opposite direction, the motor 7 is stopped, and the rotation of the sprocket 3 is fixed as a mechanism serving as a brake. This stops the movement of the first chain 2a and the second chain 2b through the sprocket 3, and as a reaction, the movable partition 12 is fixed, and the cargo is directly fixed because the front end is fixed to the movable partition 12. It does not move and returns to the original state when only the floor plate 13 moves.
[0043]
Thus, (1) the backward movement of the floor plate 13 and the movement of the movable bulkhead 12 and the cargo synchronized therewith, (2) the locking of the movable bulkhead 12, and (3) the forward movement of only the floor plate 13 Is repeated, and the movable bulkhead 12 and all the cargo are sequentially moved to the rear side of the floor plate 13, and the cargo is dropped from the rear end to the outside of the box 10.
[0044]
In order to prepare for the next unloading or to perform the loading from the state where all the loads are unloaded, it is necessary to move the movable partition 12 to the front side of the floor plate 13.
[0045]
In this case, the motor 7 is rotated in the reverse direction to move only the movable partition 12 to the front side to prepare for the next unloading.
[0046]
Next, as another embodiment, the movable partition 12 is placed on the floor plate (slide plate) 13 and the movable partition 12 is attached to the floor plate 13 when the locking mechanism performed by stopping the motor 7 does not work. On the other hand, a case where they move together by friction will be described.
[0047]
In this embodiment, the motor 7 is moved only to the locking mechanism of the sprocket 3 and to the front side of the movable partition wall 12, and is used only when preparing for the next unloading.
[0048]
By the way, as shown in FIG. 3, a concave groove 6 having a lateral opening formed in the longitudinal direction of the bottom corner of the box body 10 is formed, and the first chain 1a and the second chain 1b are formed on the floor plate 13. The portions from the ends fixed to the box 10 and the floor plate 13 to the rotating bodies 1a to 1d are disposed in the concave grooves 6.
[0049]
In this way, the first chain 1a and the second chain 1b can be arranged on the floor plate 13 so as not to interfere with the load.
[0050]
Further, by closing the lateral opening of the concave groove 6 with a hanging flexible plate 19 such as a rubber plate, even if the load is sand, gravel or other granular or small lump-like load, the load can be stored in the concave groove 6. It can be prevented from entering by the flexible plate body 19.
[0051]
The first chain 1a and the second chain 1b are laid so as to cross over the floor plate 13 from the rotators 1a to 1d, and that portion pushes the flexible plate 19 up like a curtain. If it does, no problem will occur.
[0052]
In the above-described embodiment, the description has been made centering on the unloading of the load. However, the present invention can also be applied to the case of loading, and the present invention is similarly applied to a load carrier such as a truck other than a container as a load transport box. be able to.
[0053]
【The invention's effect】
As described above, the load carrying box with a cargo handling device of the present invention is provided with a floor plate which can be moved back and forth by a cylinder at the bottom as a cargo handling device for discharging or loading the cargo. In a load carrying box provided with a cargo handling device that has a movable partition that moves with the floor plate when it moves, the floor plate that can move back and forth and the movement of the movable partition that moves synchronously with or moves relative to the floor plate Can be selectively and reliably obtained, and a stable state can be maintained by preventing movement of the movable partition wall from turning right and left.
[Brief description of the drawings]
FIG. 1 is a cross-sectional plan view showing one embodiment of a cargo carrying box with a cargo handling device of the present invention.
FIG. 2 is a vertical sectional front view showing one embodiment of the load carrying box with a cargo handling device of the present invention.
FIG. 3 is a longitudinal sectional side view showing one embodiment of the load carrying box with a cargo handling device of the present invention.
FIG. 4 is a plan view of a main part showing an embodiment of the load carrying box with a cargo handling device of the present invention.
FIG. 5 is a perspective view showing a conventional example.
FIG. 6 is a perspective view showing another example of a fixing means for fixing a movable partition in a conventional example.
[Explanation of symbols]
1a: First rotating body (guide roller)
1b 2nd rotating body 1c 3rd rotating body 1d 4th rotating body 2a 1st chain 2b 2nd chain 3 ... sprocket 4 recessed part 5 ... rotating shaft 6 ... groove part 7 ... motor DESCRIPTION OF SYMBOLS 10 ... Box 11 ... Load discharge port 12 ... Movable partition 12a ... Base plate 12b ... Slope surface 13 ... Floor board 14 ... Telescopic cylinder 15 ... Cylinder 16 ... Fixing means 17 ... Rack part 17a ... Locking projection 17b ... Lock bar 18 ... Cam 19: Flexible plate 22: Guide

Claims (2)

As a loading / unloading device for loading or unloading provided in a cargo transport box such as a container or truck bed, a floor plate that can be moved back and forth by a cylinder is arranged at the bottom, and only the floor plate moves at the time of locking on this floor plate, In a load carrying box with a cargo handling device provided with a movable partition that moves with the floor plate when moving,
A sprocket provided with a projection that engages with the ring hole of the chain is provided on the pedestal portion of the movable partition wall so as to be rotationally driven by a motor that can rotate forward and reverse, and one end is fixed to the rear end side of the box body, A first chain whose other end is fixed to the front end side, and a second chain whose one end is fixed to the front end side of the box body and the other end is fixed to the rear end side are stretched in a crossing state. A load carrying box with a cargo handling device, wherein a part of the chain is engaged with the sprocket. 2. The load carrying box with a cargo handling device according to claim 1, wherein the motor has a mechanism serving as a brake for fixing the rotation of the sprocket when stopped.

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