JP4700030B2 - Heavy goods management device - Google Patents

Description

  The present invention relates to a heavy load management apparatus, and more particularly to a heavy load management apparatus used for managing a storage place for storage and retrieval of a cylindrical heavy load.

  Conventionally, management of heavy objects such as long bar coils stored in a warehouse has been performed based on position data grasped by workers engaged in storage or removal of heavy objects. That is, when storing a heavy object, the storage position is recorded in the management data, and when the heavy object is extracted, the original position data of the extracted heavy object is deleted from the management data.

  In the conventional method as described above, since it is based on the record and deletion of the worker, the management is likely to be inaccurate, and the worker is burdened. Therefore, a method of attaching an IC tag to a heavy object and reading and managing the IC tag is conceivable, but the suitability of the IC tag is not particularly good for an iron heavy object.

  Furthermore, it is conceivable to manage the heavy objects to be handled by measuring the position of a crane or the like using a laser distance meter, but the management becomes complicated because it is not linked to the handling work of heavy objects.

  The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a heavy goods management device that can automatically manage the heavy goods storage position without imposing a burden on the operator. .

  In order to achieve the above-mentioned object, the invention according to claim 1 is characterized by being stacked in parallel with a reference plane composed of a row direction parallel to the floor surface and a height direction perpendicular to the floor surface. A heavy load management device for managing the storage positions of a plurality of heavy objects stored in a stack, which is disposed at each projection position of the heavy objects with respect to a reference surface and directed toward the corresponding heavy object storage position. A plurality of transmitters that transmit position data, a receiver that receives position data transmitted from one of the transmitters according to the timing of storage or removal of any heavy object, and the received position data Control means for determining the storage position of a heavy object stored or taken out based on the plurality of heavy objects that are stored in alignment in the depth direction perpendicular to the reference plane. Depth position based on storage order It further includes a moving body that is used to determine the storage position of the heavy objects included and is used for storing or taking out heavy objects, and the moving body reads the support for lifting the heavy objects and changes in the load applied to the support. A load meter is provided, the control means determines the storage position based on the position data at the time when the load changes, the heavy object has a cylindrical shape with the axial direction as the depth direction, and the transmitter is And the IC tag disposed on the reference plane, the moving body is a forklift, the support body extends in a horizontal direction with respect to the forklift, and is inserted into the central space of the heavy object to simultaneously load a plurality of heavy objects. It is a ram attachment that can be lifted and moved in the vertical direction. The receiver is installed on the lower surface of the tip of the ram attachment, and the transmitter surrounds the IC tag. In which further comprising a reflector for preventing the diffusion of the location data to non-direction.

  If comprised in this way, in the storage or taking-out of a heavy article, the positional data transmitted from the corresponding transmitter is received. Further, the position in the depth direction can also be specified by the storage order of heavy objects. Furthermore, the position data used by the control means corresponds to a heavy object stored or taken out. Furthermore, there are no obstacles between the transmitter and the receiver. Furthermore, the reception state of the position data receiver becomes more stable.

  As described above, according to the first aspect of the present invention, since the position data transmitted from the corresponding transmitter is received, the storage position of the heavy object can be managed with high accuracy. In addition, since the position in the depth direction can be specified by the order of storing heavy objects, it is possible to manage the three-dimensional storage position of heavy objects. Furthermore, since the position data used by the control means corresponds to a heavy object stored or taken out, the storage position can be managed with high reliability. Furthermore, since there is no obstacle between the transmitter and the receiver, the reception of the position data is stabilized, and the reliability of the apparatus is improved. Furthermore, since the reception state of the position data at the receiver is more stable, the reliability of the apparatus is further improved.

  FIG. 1 is a block diagram showing a schematic configuration of a heavy goods management apparatus according to a first embodiment of the present invention.

  Referring to the figure, heavy goods management device 21 is a position transmitted from any one of IC tags 23a to 23d and IC tags 23a to 23d, which are active type transmitters that constantly transmit position data. The receiver 26 is configured to receive data, and a control device 35 that determines the storage position of the heavy load 24 based on the position data received by the receiver 26. The receiver 26 is provided on the lower surface of the distal end of a ram attachment 27 that is a support for supporting the heavy object 24. The ram attachment 27 is attached to a forklift 31 that is a moving body, and is movable up and down. The forklift 31 is configured to be movable on the floor 47 in the front-rear and left-right directions.

  On the other hand, the control device 35 is configured with the control unit 37 as a center, and further receives a data receiving unit 38 for receiving position data transferred from the receiver 26 by radio, the type of the heavy object 24, and the like. The input unit 40 and a storage management table 41 for managing the storage position of the heavy object 24 determined by the control unit 37.

  In this way, the heavy goods management device 21 is configured, and the storage position is automatically stored in the storage management table 41 based on the work of storing and taking out the heavy goods 24 by the forklift 31.

  FIG. 2 is a front view of an IC tag mounting structure used in the heavy goods management apparatus according to the first embodiment of the present invention, and FIG. 3 is a plan view seen from the line III-III shown in FIG. 4 is a side view seen from the IV-IV line shown in FIG. 2, FIG. 5 is an enlarged sectional view of the VV line shown in FIG. 2, and FIG. 6 is the IC tag shown in FIG. It is the schematic perspective view which showed the positional relationship of the reflector which surrounds this.

  With reference to these drawings, the IC tag mounting structure 43 is constituted by a frame 44 made of a lattice-shaped steel material or the like mounted on a floor surface 47 in the vertical direction. In the space between each of the frames 44, a plurality of reflectors 45 are attached at corresponding positions in a stacked manner, and a plurality of IC tags 23 are respectively attached to the center thereof. That is, four IC tags 23 are arranged on the first stage close to the floor surface 47, three on the upper stage, and two on the upper stage. Note that these positions of the IC tag 23 correspond to the horizontal projection positions of a plurality of heavy objects stored in a stack on the floor surface 47 as will be described later.

  As shown in FIG. 3, four sets of space members 48 each having two sets are provided on the upper surface of the floor surface 47 in one direction of the frame 44. In addition, this space material 48 is for installing cylindrical heavy objects, such as a strip steel coil mentioned later, in a stable state.

  Further, as shown in FIGS. 3 and 4, a reinforcing member 49 having a triangular shape in side view is attached to the back side of the frame 44. This is to reinforce the frame 44 against the load applied to the frame 44 when the heavy object is stored so as to be drooped with respect to the frame 44.

  As shown in FIGS. 5 and 6, the reflector 45 is disposed in a space formed by the frame 44, and is installed in a state where the IC tag 23 is suspended at the center thereof. The reflector 45 is formed by cylindrically forming a synthetic sheet made of a polyester sheet having aluminum deposited on one surface and a foamed polyethylene sheet bonded to the opposite surface of the polyester sheet. As a result, diffusion of a signal transmitted from the IC tag 23 attached to the central portion of the reflector 45 is prevented, and its arrival directivity is enhanced.

  In this embodiment, nine IC tags 23 are attached to the frame 44. However, the signals transmitted from the IC tags 23 are different from each other, and any IC tag 23 is transmitted by receiving the signal. It is configured to be able to determine whether it is

  FIG. 7 is a diagram corresponding to FIG. 2, and shows a state in which a cylindrical heavy object 24 such as a strip steel coil is stored in a piled-up shape, and FIG. 8 is a diagram of VIII-VIII shown in FIG. 7. 9 is a plan view seen from the line, and FIG. 9 is a side view seen from the IX-IX line shown in FIG.

  Referring to these drawings, the heavy object 24 has a frame 44 so as to follow a reference plane composed of a row direction parallel to the floor surface 47 and a height direction perpendicular to the floor surface 47. Is installed. The heavy objects 24 are stored in a pile shape parallel to the reference surface. Further, as shown in FIGS. 8 and 9, a plurality of heavy objects 24 are stored in alignment in the depth direction perpendicular to the reference plane. Specifically, when the heavy object 24 is located at the position closest to the frame 44 in the depth direction, four pieces are arranged in the lower stage and three pieces are arranged in the middle stage as shown in FIG. In the upper stage, two are arranged. Also, the same number of second and third heavy objects 24 from the depth direction with respect to the frame 44 are arranged. At the position farthest from the frame 44 in the depth direction, only two heavy objects 24 (lower right in FIG. 8) are installed on the space member 48.

  In this way, a large number of heavy objects 24 are stored so as to lean against the frame 44, but all the axial directions of the respective cylindrical shapes are arranged so as to be horizontal with respect to the floor surface 47. Accordingly, as shown in FIG. 7, when viewed from the opposite surface of the heavy object 24 to the frame 44, the IC tag 23 surrounded by the reflector 45 can be directly viewed through the internal space of the heavy object 24. It is configured. That is, the position data transmitted from each of the IC tags 23 is transmitted through the internal space of the corresponding heavy object 24 together with the diffusion preventing effect by the reflector 45.

  FIG. 10 is a plan view showing a state in which a new heavy article is to be stored from the state shown in FIG. 8, and FIG. 11 is a side view corresponding thereto.

  Referring to these drawings, a ram attachment 27 extending in the horizontal direction is attached to the front surface of the forklift 31, and the ram attachment 27 is configured to be movable up and down by an operation on the forklift 31. A receiver 26 is attached to the lower surface of the distal end of the ram attachment 27. When the heavy object 24a is to be stored, the ram attachment 27 is inserted into the central space of the heavy object 24a arranged at another location (not shown). And the heavy article 24a can be lifted by raising the ram attachment 27 in this state. Next, the forklift 31 is moved in a state where the heavy object 24a is held by the ram attachment 27, and the heavy object 24a is moved above the heavy object 24b and the heavy object 24c. When the heavy object 24a is moved to a predetermined upper position, the ram attachment 27 is lowered. Thereby, the heavy object 24a is loaded between the heavy object 24b and the heavy object 24c. The ram attachment 27 is further lowered to release the weight 24a from being held. Then, by retracting the forklift 31, the ram attachment 27 is pulled out from the heavy object 24a, and the work for storing the heavy object 24a is completed.

  As described above, when the heavy object 24a is loaded on the heavy object 24b and the heavy object 24c, the heavy object 24a is aligned with the heavy object 24 in the same level in the depth direction. Therefore, the receiver 26 receives a signal transmitted from the IC tag 23a installed in the reflector 45a corresponding to the loading position of the heavy object 24a. In this way, the storage position of the heavy object 24a is determined. This determination method will be described below.

  FIG. 12 is a schematic perspective view for explaining a method of calculating a heavy article storage position in the heavy article management apparatus according to the first embodiment of the present invention.

  When the heavy objects 24 are stored in a pile shape as shown in the figure, in order to specify the position of each heavy object 24, address information by three elements in the X direction, the Y direction, and the Z direction is necessary. . In this embodiment, the surface on which the IC tag is arranged is used as a reference surface, and this is specified by addresses in the X direction and the Y direction. That is, as the X direction, seven columns of addresses from the a column to the g column are associated. In addition, three vertical addresses from the first stage to the second stage are associated with the vertically upward direction. Furthermore, the Z direction corresponds to the depth direction with respect to the reference plane, and is configured to be specified by three pieces of address information from No. 1 to No. 3 from the reference plane side. In this way, when the address information in the X direction, the Y direction, and the Z direction is determined, the storage position of the stored heavy object 24 is specified.

  In FIG. 12, it is assumed that a heavy object 24 indicated by a solid line is actually stored. Further, it is assumed that each heavy article 24 is assigned a corresponding product number. For example, in the heavy article 24 of the product number M1, the address in the X direction is a, the address in the Y direction is a, and the address in the Z direction is specified by 1. FIG. 13 shows the specific contents of the storage management table shown in FIG. 1 in which the address information of the heavy objects 24 actually stored is stored in this way.

  In this way, the heavy article 24 of each product number is described in the storage management table 41, and the corresponding address information is also described.

  FIG. 14 is a schematic diagram showing changes when the heavy article shown in FIG. 12 is stored or taken out, and FIG. 15 changes its contents corresponding to the storage and take-out operations shown in FIG. It is the schematic which showed the specific content of the storage management table.

  Referring to these drawings, (1) attempts to store a heavy article 24 (hereinafter referred to as “article number M1”) having a product number M1 in a state where no heavy goods are stored at the storage position. Indicates the state. The information on the product number M1 is input from the input unit 40 shown in FIG. 1, so that the product number of the heavy article to be handled is specified. When the ram attachment 27 is lowered and the product number M1 is lowered onto the space member 48, the load applied to the ram attachment 27 disappears. In this state, the receiver 26 is receiving a signal transmitted from the IC tag 23 (a, b) corresponding to the row a and row i. Accordingly, it is found from the received data received by the receiver 26 when the load of the ram attachment 27 disappears that the product number M1 is stored at the positions of the a row and the i stage. As the information on the position in the depth direction of the product number M1, since it is not recorded in the storage management table 41, it is also found that it is the first position. As a result, the address information for the product number M1 is written in the storage management table 41 as shown in (1) of FIG.

  Next, (2) of FIG. 14 shows a case where two heavy objects 24 of product numbers M2 and M3 are simultaneously held and stored by the ram attachment 27. At this time, the measured value of the load meter linked to the ram attachment 27 is almost twice the weight corresponding to the one weight 24 given in advance, so two objects of the product numbers M2 and M3 are to be stored. It turns out that it is the heavy article 24 of this. When the product numbers M2 and M3 are lowered onto the space member 48 and to the rear side of the product number M1, specific information of the IC tag 23 received by the receiver 26 is acquired by a change in the load applied to the ram attachment 27. As a result, as shown in (2) of FIG. 15, the product numbers M2 and M3 are written in the storage management table 41, and the corresponding address information is written.

  FIG. 14 (3) is a view showing a state in which the heavy article 24 having the product number M3 is taken out from the state (2). The ram attachment 27 is inserted to take out the product number M3, and when the ram attachment 27 is lifted, a load is applied to the ram attachment 27. The reception data of the receiver 26 at the time when the load meter changes is acquired. That is, based on the information of the IC tag 23 (a, a) at that time, it is found that the product number M3 to be taken out is arranged in the a row and the i stage. Further, the load meter of the ram attachment 27 reveals that it is one heavy object 24. Then, the product number to be taken out from the state before taking out, that is, the information in the storage management table 41 shown in (2) of FIG. 15, is stored at the third position farthest from the reference plane in the Z direction. It turns out that it is of M3. As a result, the storage management table 41 is changed to one in which the product number M3 and its address information are deleted as shown in (3).

  (4) in FIG. 4 shows a state where the product numbers M1 and M2 are to be taken out from the state (3). At this time, it is found from the load meter information of the ram attachment 27 that the two heavy objects 24 are to be taken out. It is also found that the load 24 is a heavy object 24 arranged in the a row and the i stage by the received data received by the receiver 26 due to the change in the load meter of the ram attachment 27. As a result, the product numbers M1 and M2 and their address information are deleted from the contents of the placement management table 41 shown in (3) of FIG. 15, and the contents of the placement management table 41 as shown in (4). Will be rewritten.

  In the example of FIG. 14, storage and retrieval of heavy objects only in row a and row are described, but the same applies when transferring heavy items stored in a specific row to another row. The effect of. That is, the placement information of the specific product number extracted from the placement management table is deleted once, and new placement information of the heavy article of the product number is automatically written. In this way, even if it is necessary to remove other heavy objects stacked in front or above in order to take out a desired heavy object, the storage information of all heavy objects is not only during the removal but also after the removal. Is always written in the storage management table in real time, thereby improving the management reliability.

  As described above, in the present invention, the contents of the placement management table 41 are automatically rewritten simply by sequentially storing and taking out heavy objects via the ram attachment 27. As a result, the storage position of the heavy object 24 can be managed accurately and reliably.

  In the above embodiment, the heavy load to be managed is a long bar coil, but the present invention can be similarly applied to a cylindrical heavy load such as a steel coil or an electric cable. Moreover, even if it is shapes other than a cylindrical shape, if it is a heavy article lifted at the time of storage and taking out, it can apply similarly.

  Further, in the above embodiment, heavy objects are stacked in a bowl shape, but depending on the shape of the heavy object and the structure of the storage place, the heavy objects are arranged in the same number and arranged in the vertical direction. The same can be applied to the case of storing.

  Furthermore, in the above embodiment, the moving body and the support body are specified by the forklift and the ram attachment, but other moving bodies and support bodies may be used.

  Furthermore, in the above embodiment, an active type IC tag is used as a transmitter, but other transmitters may be used.

  Furthermore, in the above-described embodiment, the reflector having a specific structure is provided around the IC tag. However, other structures may be used, and the reflector may not be provided.

  Furthermore, in the above-described embodiment, a plurality of transmitters (IC tags) are provided on the reference plane side, and reception is performed by one receiver on the forklift side. Instead, one transmitter is provided on the forklift side. A plurality of receivers may be provided on the reference plane side for receiving them. In this case, the same effect can be obtained by specifying which receiver has received the data during storage and retrieval.

1 is a block diagram showing a schematic configuration of a heavy article management device according to a first embodiment of the present invention. It is the front view which showed the schematic shape of the IC tag attachment structure to which the IC tag shown in FIG. 1 was attached. FIG. 3 is a plan view seen from the line III-III shown in FIG. 2. It is the side view seen from the IV-IV line shown in FIG. It is an expanded sectional view of the VV line shown in FIG. It is the schematic perspective view which showed the attachment state of the IC tag shown in FIG. FIG. 3 is a diagram corresponding to FIG. 2, and is a schematic diagram illustrating a state in which a heavy object is stored. It is the top view seen from the VIII-VIII line shown in FIG. It is the side view seen from the IX-IX line shown in FIG. It is the top view which showed the state which stores a new heavy article from the state shown in FIG. It is the side view seen from the XI-XI line shown in FIG. It is a schematic perspective view for demonstrating the concept of the positional information in the storage location management table shown in FIG. It is the figure which showed the content of the storage management table which shows the storage state of the heavy article shown by FIG. It is the schematic which showed the storage and taking-out state of the heavy article based on the example shown in FIG. It is the figure which showed the state of the change of the storage management table corresponding to the storage or taking-out operation | work of the heavy article shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 21 ... Heavy load management apparatus 23 ... IC tag 24 ... Heavy load 26 ... Receiver 27 ... Ram attachment 31 ... Forklift 32 ... Load meter 35 ... Control apparatus 41 ... Place management table 45 ... Reflector In addition, the same code | symbol is shown in each figure Indicates the same or equivalent part.

Claims (1)

Manages the storage position of a plurality of heavy objects stored in a piled shape or a stacked shape in parallel with a reference surface composed of a row direction parallel to the floor surface and a height direction perpendicular to the floor surface. A heavy goods management device for
A plurality of transmitters each disposed at a projected position of each of the heavy objects with respect to the reference plane and transmitting position data toward a corresponding storage position of the heavy objects;
A receiver that receives the position data transmitted from any of the transmitters according to the timing of storage or removal of any of the heavy objects;
Control means for discriminating the storage position of the stored or removed heavy object based on the received position data;
A plurality of the heavy objects are stored in alignment in the depth direction perpendicular to the reference plane,
The control means determines the storage position of the heavy object including the position in the depth direction based on the storage order of the heavy object,
It further comprises a moving body used for storing or taking out the heavy object,
The moving body is provided with a support for lifting the heavy object, and a load meter for reading a change in load applied to the support,
The control means determines the storage position based on the position data at the time when the load changes,
The heavy object has a cylindrical shape whose axial direction is the depth direction,
The transmitter includes an IC tag disposed on the reference plane;
The movable body is a forklift, and the support body extends in a horizontal direction with respect to the forklift and can be vertically moved so that a plurality of heavy objects can be lifted simultaneously by being inserted into the central space of the heavy object. Ram attachment,
The receiver is installed on the lower surface of the tip of the ram attachment;
The transmitter further includes a reflector that surrounds the IC tag and prevents diffusion of the position data in directions other than the corresponding direction of the heavy object.

Images