JP2004161426A - Chassis stopping system and chassis stopping method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chassis stopping system capable of suppressing the lowering of a load handling efficiency in an overall yard produced when a chassis is stopped, and a chassis stopping method. <P>SOLUTION: In this chassis stopping method, the chassis 3 running in one direction on a traveling lane 4 formed in the yard extendedly in one direction is stopped. A yard crane 8 formed in a gantry, comprising the traveling lane 4 and a cargo storage area 6 for storing a plurality of cargos 5, and running over a plurality of storage blocks 7 placed in the yard stops the chassis 3 on the downstream side 7a when the crane is moved from the downstream side 7a of one storage block 7 to the other storage block 7. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a chassis stopping method for stopping a chassis traveling on a yard, and a chassis stopping system for the same.
[0002]
[Prior art]
Generally, in a system for stopping a chassis traveling on a yard, a system in which a stopping means is installed on the yard and a driver of the chassis visually recognizes the system is adopted. As a system of this kind, a traffic light or the like is stopped. The provision of means has been proposed.
[0003]
As a conventional system for stopping a chassis traveling on a yard, for example, on a container yard, a traveling route on which an AGV as an unmanned transport vehicle travels intersects a traveling route on which a chassis as a manned transport vehicle travels. There is a system in which a traffic signal is provided at an intersection to prevent an unmanned transport vehicle and a manned transport vehicle from entering the intersection at the same time (see Patent Document 1).
[0004]
[Patent Document 1]
JP-A-2000-44063 (page 4-7, FIG. 1)
[0005]
[Problems to be solved by the invention]
By the way, in the above-mentioned conventional chassis stop system, when a plurality of chassis stops running due to a traffic light installed at an intersection where a plurality of chassis travel routes on the yard intersect, and a plurality of chassis cause traffic jam, There is a problem that not only the traveling of the plurality of chassis is stopped, but also the cargo handling work of the cargo to be transported by the plurality of chassis is stopped, and the cargo handling efficiency of the entire yard is significantly reduced.
[0006]
The present invention has been made in view of such circumstances, and has as its object to provide a chassis stop system and a chassis stop method that suppress a decrease in cargo handling efficiency of the entire yard that occurs when the chassis stops. .
[0007]
[Means for Solving the Problems]
The present invention employs the following means in order to solve the above problems.
The invention according to claim 1 is a chassis stopping method for stopping a chassis traveling in one direction on a traveling lane extending in one direction on a yard, wherein the chassis is configured as a gate, A yard crane having a traveling lane and a cargo storage area where a plurality of cargoes are stored and traveling across storage blocks provided on the yard is moved from a downstream side of the storage block to another storage block. In this case, the chassis is stopped on the downstream side.
[0008]
According to this invention, when the yard crane moves from the downstream side of the storage block to another storage block, the chassis is stopped on the downstream side, so that the chassis does not stop on the upstream side, and the chassis is placed in the storage block. , It is possible to carry out cargo handling while the yard crane is moving. Also, even when a plurality of chassis cause traffic congestion in the storage block, since the chassis has entered the storage block, it is rare that the traffic jam of the chassis continues outside the storage block. It hardly affects the cargo handling efficiency of the storage block.
[0009]
The invention according to claim 2 is a chassis stop system that stops a chassis traveling in the one direction on a traveling lane provided on the yard in one direction, wherein the traveling lane includes a plurality of cargoes. A plurality of stopping means for stopping the chassis at a downstream side of a plurality of storage blocks provided on the yard with a stored cargo storage area, and a control unit for controlling the plurality of stopping means. Features.
[0010]
According to the present invention, when the yard crane moves from the downstream side of the storage block to another storage block, the chassis stop system includes a stop unit that stops the chassis on the downstream side, and a control unit that controls the stop unit. Accordingly, the chassis can enter the storage block without receiving the control of stopping the chassis on the upstream side, so that it is possible to perform the cargo handling work even while the yard crane is moving.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a view showing an embodiment of the present invention, and is a plan view of a yard to which a chassis stop system is applied.
The yard is provided so as to extend in a direction parallel to the quay 2 provided in the yard, and has a traveling lane 4 in which a plurality of chassis 3 travel in one direction, for example, the direction of an arrow, and a plurality of cargoes 5 are stored. A plurality of storage blocks 7 each having a cargo storage area 6 are provided.
[0012]
The plurality of cargoes 5 are formed in a substantially rectangular parallelepiped, and are arranged at regular intervals in the cargo storage area 6 with their longitudinal direction parallel to the quay 2.
In the yard, a plurality of yard cranes 8 which are configured in a gate shape and run across the storage block 7 are arranged.
Downstream of the storage block 7, a plurality of traffic lights 9 are installed as stopping means for stopping the chassis 3. The traffic light 9 is installed in a place where the driver of the chassis 3 can recognize, for example, an upper part of the traveling lane 4 or a ground part.
[0013]
As shown in FIG. 2, the plurality of traffic lights 9 are provided in a chassis stop system 20 and are connected to a control unit 10 that controls the plurality of traffic lights 9.
The control unit 10 is provided in the chassis stop system 11 and receives an instruction from a higher-level system (not shown) and controls the plurality of traffic lights 9 to display stop or release of stop.
[0014]
When the yard crane 8 moves from the downstream side 7a of the storage block 7 to another storage block 7, the plurality of chassis 3 are stopped at the downstream side 7a using the chassis stop system 11.
That is, for example, when the yard crane 8 finishes the designated cargo handling work and moves from the storage block 7 that was performing the cargo handling work to another storage block 7 to perform the next designated cargo handling work. It moves to the downstream side 7a of the storage block 7. Thereafter, the chassis stop system 11 transmits an instruction from the host system to the control unit 10 to indicate to the traffic signal 9 that the yard crane 8 has stopped moving to the downstream side 7a of the storage block 7 to indicate a stop. . In response to the instruction, the control unit 10 controls the traffic light 9 to display a stop.
The chassis 3 that has entered from the upstream side 7b of the storage block 7 and has traveled to the downstream side 7a stops before the downstream side 7a where the traffic light 9 is installed while the traffic light 9 indicates a stop, After that, the stop release is displayed on the traffic light 9 and the system stands by until it is possible to exit the storage block 7.
[0015]
After the yard crane 8 moves to another storage block 7, the chassis stop system 11 sends a signal to the traffic signal 9 when the movement of the yard crane 8 to the other storage block 7 is completed. An instruction to display stop release is transmitted. In response to the instruction, the control unit 10 controls the traffic light 9, and the traffic light 9 displays the stop release.
The chassis 3 that has been waiting in front of the downstream side 7a where the traffic light 9 is installed can exit the storage block 7 when the stop signal is displayed on the traffic light 9, and then exits from the storage block 7.
[0016]
In this case, the plurality of chassis 3 that have entered the storage block 7 stop at the downstream side 7a because the traffic light 9 is provided on the downstream side 7a of the storage block 7. Therefore, when the chassis 3 enters the storage block 7 upon receiving an instruction to perform a cargo operation at a position before the downstream side 7a of the storage block 7, the chassis 3 performs the designated cargo operation, When exiting from the storage block 7, the instruction to stop the traffic light 9 is followed, so that the cargo handling work of the chassis 3 can be performed even when the yard crane 8 is moving to another storage block 7.
[0017]
Further, even when the plurality of chassis 3 stop on the downstream side 7a of the storage block 7 and cause traffic congestion, the congestion of the plurality of chassis 3 rarely protrudes outside the upstream side 7b of the storage block 7. . Therefore, the traffic jam hardly hinders the traveling route of the chassis 3 traveling to another storage block or the like, thereby affecting the cargo handling efficiency of the chassis 3 that enters another storage block and performs cargo handling. rare.
[0018]
According to the above configuration, even when the yard crane 8 is moving to another storage block 7, it is possible to carry out the cargo handling work of the chassis 3. Therefore, it is possible to suppress a decrease in the cargo handling efficiency of the entire yard. it can.
Further, even when the plurality of chassis 3 stop on the downstream side 7a of the storage block 7 and cause traffic congestion, there is almost no influence on the cargo handling efficiency of the chassis 3 that enters another storage block and performs cargo handling. Therefore, a decrease in the cargo handling efficiency of the entire yard can be suppressed.
[0019]
In the present embodiment, the stopping means for stopping the chassis 3 is not limited to the traffic light 9 but may be any means such as a circuit breaker that can recognize that the driver of the chassis 3 has stopped or released the stop.
Further, in the present embodiment, the chassis stop system 11 is a system that controls the traffic light 9 as stop means independently of control relating to the operation of the yard crane 8. However, since the yard crane 8 tends to be fully automated, the chassis stop system 11 can be configured as a whole yard crane operation system under control of the operation of the yard crane 8.
[0020]
【The invention's effect】
The chassis stopping method of the present invention described above has the following advantages. According to the invention according to claim 1, when the yard crane moves from the downstream side of the storage block to another storage block, the chassis is stopped on the downstream side, so that the chassis is not stopped on the upstream side, and the chassis is not stopped. Can enter the storage block, so that cargo handling can be performed even while the yard crane is moving.In addition, even when multiple chassis cause congestion in the storage block, the chassis remains in the storage block. , It is rare that congestion of the chassis continues outside the storage block, so that a decrease in the cargo handling efficiency of the entire yard can be suppressed.
[0021]
According to the invention according to claim 2, when the yard crane moves from the downstream side of the storage block to another storage block, the chassis stop system controls the stop means for stopping the chassis on the downstream side and the stop means. By providing the control unit, the chassis can enter the storage block without being controlled to stop the chassis on the upstream side, and it is possible to carry out cargo handling while the yard crane is moving. A decrease in the cargo handling efficiency as a whole can be suppressed.
[Brief description of the drawings]
FIG. 1 is a plan view of a yard to which a chassis stop system according to an embodiment of the present invention is applied.
FIG. 2 is a block diagram of a chassis stop system according to the embodiment of the present invention.
[Explanation of symbols]
3 Chassis 7 Storage block 8 Yard crane 9 Traffic light (stop means)
11 Chassis stop system

Claims (2)

A chassis stopping method for stopping a chassis traveling in one direction on a traveling lane extending in one direction on a yard,
A yard crane that is configured in a gate shape and travels across a plurality of storage blocks provided on the yard with the traveling lane and a cargo storage area where a plurality of cargoes are stored, A chassis stopping method, wherein the chassis is stopped on the downstream side when moving from the downstream side to another storage block. A chassis stop system for stopping a chassis traveling in one direction on a traveling lane provided in one direction on the yard,
A plurality of stopping means for stopping the chassis on the downstream side of a plurality of storage blocks provided on the yard with the traveling lane and a cargo storage area in which a plurality of cargoes are stored; and A chassis stopping system, comprising: a control unit for controlling the chassis.

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