JPH06263385A - Material handling number counting method - Google Patents

Abstract

PURPOSE:To automatically and precisely count a material handling number by previously providing sensors for detecting a series of motions constituting a material handling work in respective parts of a material handling mechanism. CONSTITUTION:When a container 3 is lifted up by a crane 2 in a landing area 5 in a container handling yard 1, a sequencer sets the values of a lock signal LK, a lifted freight present signal HZ and A lift-up work-on signal HZT to '1'. Then, when a lift-up wire is wound up, the values of a wind-up signal HX, a wind-up stop signal HY and a lifted freight confirming signal HZX are set to '1'. When a crane 2 comes to a loading passing position P, the values of a loading point passing signal LS, a traversing signal LSS are set to '1'. When the crane 2 comes to a predetermined position, the value of a wind-down signal LX and a wind-down stop signal LY are set to '1' while the values of the lifted freight present signal HZ, and the lifted freight presence confirming signal HZX are set to '0'. Further, a monitoring computer counts a material handling number if each of the detection signals varies in a predetermined configuration.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for counting the number of cargoes in a container.

[0002]

2. Description of the Related Art Conventionally, the number of cargos loaded and unloaded in a container has been manually counted when the container is loaded or unloaded.

[0003]

However, in the case of counting the number of cargoes handled by the container by such a manual operation, the greater the number of cargoes handled, the more difficult it is to ensure accuracy. there were. Conventionally, it has been desired to automatically count the number of cargoes handled, but cargo handling work is not always uniform, and for example, when loading or unloading is not performed, the cargo may return to its original location. is there. Conventionally, there is no means for accurately and automatically counting the number of cargo handling, assuming such a case. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a cargo handling number counting method capable of accurately and automatically counting the cargo handling number.

[0004]

In order to solve the above-mentioned problems, according to the present invention, each part of the cargo handling mechanism is provided with a sensor for detecting a series of operations constituting the cargo handling work in advance, and each sensor obtained from these sensors is provided. Only when the detection signal changes in a predetermined manner, it is considered that one cargo handling operation is performed, and the number of cargo handling operations is counted.

[0005]

According to the present invention, each detection signal obtained from a sensor provided in advance so as to detect a series of operations constituting the cargo handling work in each portion of the cargo handling mechanism is changed in a predetermined manner. It is considered that the cargo handling work has been performed only once. As a result, the number of cargo handling items is counted.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

A: Structure of Example FIG. 1 is a view showing a container loading / unloading work area 1, in which a ship 4 is anchored in a sea 6 facing a land 7. A crane 2 transfers the container 3 from the landing site 5 to the shipping site 4a or from the shipping site 4a to the landing site 5. This container 3 is shown in FIG.
As shown in Fig. 3, the holes 3a, 3 for the crane to lock
It has a, 3a, and 3a at the upper four places.

The hoisting / hanging part of the crane 2 is fitted into the lock holes 3a, 3a, 3a, 3a, and when the locking device of the hoisting / hanging part is rotated by a predetermined amount (for example, 90 degrees), the container is moved. It is supposed to be locked.
In FIG. 1, the arrow Va indicates the direction in which the container 3 is transferred from the landing field 5 to the shipping field 4a, and the arrow Vb indicates the direction in which the container 3 is transferred from the shipping field 4a to the landing field 5. . P indicates a shipping passage point.

A crane 2 is installed in this container loading / unloading work area 1.
A sequencer 8 and a monitoring computer 9 shown in FIG. 3 are provided as control means for controlling the. The sequencer 8 controls the cargo handling operation by the crane 2 and detects a series of operations constituting the cargo handling work through the sensors attached to the respective parts of the cargo handling mechanism including the crane 2,
The signals listed below are generated.

Lock signal LK: The value becomes "1" when the container 3 is locked to the crane 2. b. Unlock signal ULK …… The value becomes “1” when the container 3 is not locked to the crane 2. Although it is not completely synchronized with the lock signal LK (see FIG. 4),
This is to reliably detect the lock signal LK whose value is "1".

C. Hoisting signal HX: The value becomes "1" while the crane 2 is hoisting the container 3 or bulk goods. d. Unwinding signal LX ... The value becomes "1" while the crane 2 is unwinding the container 3 or bulk goods.

E. Transverse sea signal TRS ... The value becomes "1" when the crane 2 is transferring the container 3 or the bulk cargo in the direction of the arrow Va, that is, the landing field 5 to the loading field 4a. f. Traverse landing signal TRL: The value becomes "1" when the crane 2 is transferring the container 3 or the bulk load in the direction of the arrow Vb, that is, the loading dock 4a to the landing dock 5. g. Suspended load presence signal HZ: The value is “1” when the suspended load of the container 3 suspended by the crane 2 or the bulk load is larger than the preset load.

H. Hoisting stop signal HY: The value of the hanging load signal HZ is "1", and the value becomes "1" when the hoisting is temporarily stopped. i. Unwinding stop signal LY ... When the hanging load presence signal HZ is "1" and the unwinding is temporarily stopped, the value becomes "1".

J. Transverse intermediate signal LSS ... A signal for detecting that the crane 2 has passed the loading passage point P, and immediately after the crane 2 passes the loading passage point P, the value is momentarily. It becomes "1". k. Retrograde reset signal LSY ... Landing dock 5 to loading dock 4a
This signal is output as a reset signal when the vehicle reverses from the loading dock 4a to the landing dock 5 on the way to the landing route or when it crosses the loading dock 4a from the loading dock 4a to the landing dock 5 on the way. l. Suspended load confirmation signal HZX ... This is a signal for confirming the suspended load, and the value is “1” when the crane 2 suspends and hoists the container 3 (or bulk load).

M. Loading signal O ... A signal for detecting that the crane 2 is traversing or traveling by suspending the container 3 (or bulk cargo). When the crane 2 traverses or travels in this way When the value becomes "1" and it is confirmed that the signal is reversed by the above-mentioned reverse reset signal LSY, the value is "0".
become. n. Loading signal S ... A detection signal for identifying during loading in the loading dock 4a, which is a reverse reset signal LSY, a traverse sea signal TRS, a loading signal O, and a loading point passing signal LS.
The value is determined based on the like.

O. Landing signal L: a detection signal for identifying the loading and unloading in the landing site 5, based on the reverse reset signal LSY, the traverse sea signal TRS, the loading and unloading signal O, the traverse intermediate signal LS, etc. Value is set. p. Heavy load signal W ... A detection signal for identifying whether the object transferred by the crane 2 is the container 3 or the bulk load, and the hanging load presence signal HZ is “1”. If there is, and it is not locked during winding, the value is "1".
become.

Q. Suspended load signal HZT ... A detection signal for identifying whether or not the crane 2 is in a suspended load operation, and the heavy load signal W determines that the suspended load is the container 3. In the case of unlocking, 3 seconds after unlocking, and if the suspended load is judged by the heavy load signal W, the suspended load signal HZ
After is turned off, hold for 3 seconds to show that the lifting work is in progress.

The sequencer 8 considers that one cargo handling operation is completed only when each of the above signals changes in a predetermined manner, and outputs the signals listed below to the monitoring computer 9.

R. Cargo handling data creation signal D ... A detection signal for counting the number of cargo handling of the container 3 or bulk cargo. s. Read request signal RC: output from the sequencer 8 to the monitoring computer 9 in order to read various signals necessary for counting the number of containers 3 or the number of cargoes handled in bulk. The value of the cargo handling data creation signal D becomes "1", whereby the number of cargo handling of the container 3 or the bulk cargo is added by "1". t. Shipping point passage signal LS ... When the container 3 or the crane 2 for transferring bulk goods moves in the direction of arrow Va and passes through the loading point P, the value switches from "0" to "1", and arrow Vb When passing the loading passage point P while moving in the direction, the value is switched to "1" to "0". That is, when the container 3 or the bulk cargo is on the sea 6 side, the value is "1".

The monitoring computer 9 performs various processes including counting the number of cargoes on the basis of the signal supplied from the sequencer 8. Further, the monitoring computer 9 reads the various signals supplied from the sequencer 8 and then outputs the read completion signal RE whose value is “1” to the sequencer 8
Output to.

B: Operation of Embodiment Next, the operation of this embodiment will be described with reference to FIG. First, the work of suspending the container 3 on the crane 2 at the landing site 5 of the container loading / unloading work place 1 is started. Then, at time t1, the work of suspending the container 3 on the crane 2 is performed, and the lock holes 3a, 3a,
When 3a and 3a are locked by the crane, the sequencer 8
Thus, the values of the lock signal LK, the hanging load presence signal HZ, and the hanging load signal HZT are set to "1". In this way, the locked state and the winding start state are detected by the sequencer 8.

Next, when the crane 2 gradually hoists the suspension wire of the container 3, at time t2, the values of the hoisting signal HX, hoisting stop signal HY and the suspended load confirmation signal HZX are all "0". Becomes "1". And the crane 2
Starts suspending the container 3 and moving toward the landing field 5 to the shipping field 4a. In this way, the sequencer 8 detects the winding state of the container 3.

Next, at time t3, the crane 2 suspending the container 3 reaches the loading passage point P, and the values of the loading point passage signal LS and the traverse intermediate signal LSS are "0" to "1".
become. As a result, it is detected that the shipping passage point P has been passed. The crane 2 that suspends the container 3 continues to traverse as it is.

After the crane 2 having the container 3 suspended in this way continues to traverse as it is, at time t4, the values of the retrograde reset signal LSY, the loading signal O and the loading signal S change from "0" to "1". Become. Similarly, when the crane 2 that suspends the container 3 continues traversing and reaches a predetermined position, and at time t5, the values of the lowering signal LX and the lowering stop signal LY are both "0" to " 1 ”. In this way, the unwinding state of the container 3 is detected by the sequencer 8.

Next, at time t6, the lock signal LK,
The values of the hanging load presence signal HZ and the hanging load confirmation signal HZX both change from “1” to “0”, and the unlocked state and the unwinding end state of the container 3 are detected. Then, at time t7, the unlock signal ULK and the cargo handling data creation signal D change from "0" to "1" due to the above-described unlocking and detection of the unwinding end state.

Next, at time t8, the values of the retrograde reset signal LSY, the loading signal O and the loading signal S, and the loading data creation signal D all change from "1" to "0", and the loading port 5 is loaded. It is detected that the shipping of the containers 3 to the field 4a is completed. At the same time, the value of the read request signal RC changes from “0” to “1”, and this value “1” is the sequencer 8
To the monitoring computer 9. As a result, the monitoring computer 9 inputs a signal required for counting the number of cargoes of the container 3 such as the type and weight of the container 3, and adds "1" to the number of cargoes of the container 3 transferred to the loading bay 4a.

At time t9 after the addition of the number of cargoes in the container 3 and the input of the necessary signals described above are completed, the value of the read completion signal RE changes from "0" to "1", and this value "1". Is sent from the monitoring computer 9 to the sequencer 8. Then, at time t10, the read completion signal RE
Value changes from "1" to "0" and the landing site 5 to the shipping site 4a
The transfer work of one container 3 to the container is completed.

In addition, a time chart for carrying out the transfer work of the container 3 from the loading dock 4a to the landing dock 5 is shown from time t11 to time 20 in FIG. Also in this case,
Similar to the work from time t1 to time t10, the values of various signals change. However, in this case, the traverse sea signal TRS does not become "1" as described above, and instead the traverse landing signal TRL becomes "1" in the time zone including the time t13 to the time t15. Further, the loading signal S never becomes "1", instead the landing signal L becomes "1" between the time t14 and the time t18, and the value of the loading point passing signal LS becomes "1" at the time t10. Has changed from "0" to "0".

In this case, at time t18, the values of the retrograde reset signal LSY, the loading signal O and the landing signal L, and the loading data creation signal D all change from "1" to "0".
Completion of the landing of the container 3 from the loading dock 4a to the landing dock 5 is detected. At the same time, the value of the read request signal RC changes from “0” to “1”, and this value “1” is sent from the sequencer 8 to the monitoring computer 9. As a result, the monitoring computer 9 inputs a signal necessary for counting the number of cargoes of the container 3 such as the type and weight of the container 3, and adds “1” to the number of cargoes of the container 3 transferred to the landing site 5.

At the time t19 after the addition of the number of cargoes in the container 3 and the input of the necessary signals described above are completed, the value of the read completion signal RE changes from "0" to "1", and this value "1". Is sent from the monitoring computer 9 to the sequencer 8. Then, at time t20, the read completion signal RE
Value changes from "1" to "0" from loading dock 4a to landing dock 5
The transfer work of one container 3 to the container is completed.

While traversing from the landing site 5 to the shipping site 4a,
When the ship reverses from the loading dock 4a to the landing dock 5 or when it traverses from the loading dock 4a to the landing dock 5 and reverses from the loading dock 4a to the landing dock 5 on the way, the retrograde reset signal LSY changes from "0" to " 1 ”and the generation of the read request signal RC is blocked, so that the monitoring computer 9 does not count the cargo handling number. In this way, the number of cargoes of the containers 3 transferred to the loading place 4a or the landing place 5 by the crane 2 is accurately counted.

Although the case where the container 3 is transferred by the crane 2 has been described in the present embodiment, the cargo transferred by the crane 2 is not limited to the container 3, and the bulk cargo can be transferred as described above. But anything is fine. In this case, since the heavy load signal W identifies the loose load, the lock signal LK and the unlock signal ULK are automatically invalidated. Therefore, it is possible to accurately count the number of unloaded cargoes by the sequence control similar to that described above.

[0033]

As described above, according to the present invention, each of the parts of the cargo handling mechanism is provided with a sensor for detecting a series of operations constituting the cargo handling work in advance, and each detection signal obtained from these sensors has a predetermined mode. Since the number of cargo handling operations is counted only when the cargo handling work has been performed once, the number of cargo handling operations can be accurately and automatically counted.

[Brief description of drawings]

FIG. 1 is a diagram showing a container handling work space of a container according to an embodiment of the present invention.

FIG. 2 is a perspective view of a container according to an embodiment of the present invention.

FIG. 3 is a block diagram showing a schematic configuration of a system for counting the number of cargo handling according to an embodiment of the present invention.

FIG. 4 is a time chart showing various detection signals detected when counting the number of cargo handling according to an embodiment of the present invention.

[Explanation of symbols]

 2 Crane (Cargo handling mechanism) 8 Sequencer 9 Computer for monitoring.

Claims (1)

[Claims] 1. A sensor for detecting a series of operations constituting a cargo handling work is provided in advance in each part of the cargo handling mechanism, and one cargo handling work is performed only when each detection signal obtained from these sensors changes in a predetermined manner. A method for counting the number of cargoes, which is characterized by counting the number of cargoes deemed to have been carried out.