JPH1036070A - Chassis position indicating facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an operator who moves a chassis to stop the chassis by moving the chassis while watching the position of a color marker displayed on a color monitor, and easily adjusting the container load center position of the chassis to a container hanging position. SOLUTION: A color marker 1 is provided at the load center position Q of a container C on the side face of a chassis S, and a transfer crane T is fitted with a color camera 5 placed in a position where it can photograph the color marker 1 when the chassis S is stopped at the center position (container lifting position) R of a spreader beam and with a color monitor 5 disposed with its front oriented in the moving direction of the chassis S to display the image taken by the color camera 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chassis position display device for a loading / unloading crane for lifting and transferring a container, which displays that the chassis has stopped at the container lifting position of the crane.

[0002]

2. Description of the Related Art At present, in a container terminal, a plurality of rows of container yards in which containers are aligned and stacked are arranged, and containers are moved between the container yards and a chassis for transporting the containers (the chassis is pulled by a vehicle). Loading is performed using a transfer crane. In this transfer crane, lifting of the container is performed using a spreader beam.

FIG. 9 shows an example of the arrangement of the container terminals. As shown in the figure, a pair of container yards Y in which containers C are aligned and stacked are arranged between the yards Y with a fixed path K1 along which one side leg of the transfer crane T moves. Between a pair of yards Y and another pair of yards Y, a first moving path U1 of a chassis S (which is connected to and pulled by the vehicle P) for transporting the container C, and the other of the transfer crane T A fixed path K2 on which the side legs move and a second movement path U2 of the chassis S are provided, and one-way paths W1 and W2 of the chassis S are provided on the sides of the yard Y, respectively.

The loading and unloading of the container C is performed by first moving the transfer crane T, stopping it at the target container loading and unloading position, then moving the chassis S between the crane T and the container yard Y, and using the spreader beam by the crane T. Then, the container C is lifted from the chassis S and carried out to the yard Y, or the container C is lifted from the yard Y and unloaded to the chassis S.

When the container C is lifted from the chassis S by the crane T, it is necessary to connect the spreader beam of the crane T to the container C, so that the container C and the spreader beam must be accurately aligned. Since the spreader beam can be finely adjusted in a direction perpendicular to the longitudinal direction of the container C, the position of the spreader beam can be adjusted.
Of the chassis S depends on the stopping position and the type of the chassis S, so that the chassis S is accurately adjusted so that the loading center position of the container C of the chassis S and the center position of the spreader beam (container lifting position) match. Need to stop.

[0006]

However, since it is difficult to accurately stop the chassis S as described above, the spreader beam cannot be often connected to the container C at one time, and the spreader beam once lowered It is necessary to move the chassis S by raising the beam, which reduces the efficiency of cargo handling work.

The container C is connected to the chassis S by a fixing device. If the fixing device is not released, the chassis S is lifted together with the container C, the chassis S is detached from the container C, and the container S is connected to the container S. There was a danger that the towing vehicle P would fall to the ground.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a chassis position indicating device capable of safely and efficiently performing a cargo handling operation of a container.

[0009]

In order to achieve the above-mentioned object, a chassis position display device according to the first aspect of the present invention provides a crane for loading and unloading containers which lifts and transfers containers.
A facility for indicating that the chassis has stopped at the container lifting position of the crane, wherein a color marker is provided on a side surface of the chassis in relation to a loading center position of the container, and the crane is provided with the chassis. A color camera arranged at a position where the color marker can be imaged when stopped at the container lifting position, and a color camera arranged at a position below the leg on the moving direction side of the chassis facing forward and capturing an image taken by the color camera. And a color monitor for displaying.

According to the above configuration, the color marker provided on the side surface of the chassis in relation to the center position of container loading,
An image is taken by a color camera, and the image is displayed on a color monitor arranged forward and below the legs on the moving direction side of the chassis. The operator who moves the chassis moves the chassis while watching the position of the color marker displayed on the color monitor, and stops the chassis by adjusting the container loading center position of the chassis to the container lifting position of the crane.

Further, the chassis position display equipment of the second invention is the chassis position display equipment of the first invention,
The color marker has a first color portion having a width dimension set based on an error range in which a shift between the container loading center position of the chassis and the container lifting position of the crane is allowed, and a first color portion having a different color from the first color portion. It is characterized by comprising a second collar portion provided on at least one side of the collar portion.

With the above arrangement, the image is displayed on the color monitor from the second color section as the chassis moves, and the operator who moves the chassis confirms that the approaching stop position has been confirmed by checking the second color section. Recognize,
The moving speed of the chassis is reduced, and the chassis is stopped by recognizing the first color portion displayed next.

The chassis position display equipment of the third invention is the chassis position display equipment of the second invention,
The second collar portion is provided around the first collar portion.

According to the above configuration, the image is displayed from the second color portion on the color monitor regardless of the approach of the chassis from any direction, and the operator who moves the chassis stops by confirming the second color portion. Recognizing that it is approaching the position, slowing down the moving speed of the chassis,
The chassis is stopped by recognizing the first color portion displayed next.

Further, the chassis position display equipment of the fourth invention is the chassis position display equipment of the first invention, the second invention or the third invention, wherein the color marker is provided on a side surface of the chassis. It is characterized by being formed by painting, by a color adhesive tape, or by a magnet colored on the surface.

According to the above configuration, the color marker can be easily and inexpensively attached to the side surface of the chassis. Further, the chassis position display equipment of the fifth invention is the chassis position display equipment of the first invention, wherein the color monitor is provided with the positioning mark shifted from the center of the monitor to the downstream side in the moving direction of the chassis. It is characterized by the following.

According to the above configuration, the chassis which has almost reached the predetermined stop position is decelerated by the operator who moves the chassis, and when the color monitor starts displaying the color mark, a brake operation is performed to position the chassis. It is possible to easily superimpose the image of the color mark on the position of the mark, that is, to accurately stop the chassis.

Further, the chassis position display equipment of the sixth invention is the chassis position display equipment of the first invention,
A color marker is detected based on the image data of the color camera, and a controller is provided that changes the color of the color monitor when the color marker detects that the container loading center position of the chassis and the container lifting position of the crane match. It is assumed that.

According to the above configuration, when the coincidence between the container loading center position of the chassis and the container lifting position of the crane is detected from the image data of the color camera, the color of the color monitor is changed. Therefore, the operator who moves the chassis recognizes the stop position of the chassis based on the change in the color of the color monitor, and stops the chassis.
The chassis is stopped exactly in place.

Further, the chassis position display equipment of the seventh invention is the chassis position display equipment of the sixth invention, wherein alarm means is provided near the color monitor of the crane,
The controller is provided with a function of driving the alarm means when detecting that the container loading center position of the chassis matches the container lifting position of the crane.

According to the above configuration, the coincidence between the container loading center position of the chassis and the crane container lifting position is detected from the image data of the color camera, and the alarm means is driven. Therefore, the operator who moves the chassis,
In addition to the color change of the color monitor, the alarm means drives to recognize the stop position of the chassis and stop the chassis, so that the chassis is accurately stopped at a predetermined position.

Further, the chassis position display equipment of the eighth invention is the chassis position display equipment of the sixth invention or the seventh invention, wherein a second alarm means is provided in the crane cab, and When detecting that the container loading center position of the chassis coincides with the container lifting position of the crane, a function of driving the alarm means is added.

According to the above configuration, when it is detected from the image data of the color camera that the container loading center position of the chassis coincides with the container lifting position of the crane, the second alarm means in the crane cab is driven. Therefore, the crane operator recognizes that the chassis has arrived at the predetermined position.

The ninth aspect of the present invention is the chassis position display equipment of the first aspect,
A crane is provided with a second camera arranged so as to be able to image the wheels of the chassis stopped at the center position of the container and the ground, and a second monitor for displaying an image taken by the second camera in the cab of the crane. Is provided.

According to the above configuration, the images of the wheels of the chassis and the ground taken by the second camera are displayed on the second monitor in the cab of the crane. Thus, the crane operator can check whether the chassis has been lifted with the container, and when it confirms the lifting, lowers the spreader beam to disengage the chassis from the suspended container and drop the chassis and its towing vehicle. Is prevented.

The chassis position display equipment of the tenth invention is the chassis position display equipment of the first invention,
In the crane, a proximity sensor is provided near the contact portion of the chassis wheels stopped at the container loading center position with the ground, and in the cab of the crane, the proximity sensor detects that the wheels of the chassis float above the ground. And a third alarm means that is activated by the operation.

With the above arrangement, when the proximity sensor detects that the wheels of the chassis have floated above the ground, the third alarm means is activated. Therefore, the crane operator
The activation of the third alarm means makes it possible to recognize that the chassis has been lifted together with the container, and upon confirming the lifting, lowers the spreader beam, thereby detaching the chassis from the suspended container and dropping the chassis and its towing vehicle. Is prevented.

[0028]

Embodiments of the present invention will be described below with reference to the drawings. Note that the same components as those in FIG. 9 are denoted by the same reference numerals, and description thereof will be omitted. (Embodiment 1) FIG. 1 is a side view of a transfer crane and a chassis provided with a positioning display device according to Embodiment 1 of the present invention, and FIG.

In FIG. 1, reference numerals 1 denote color markers provided on the entrapment prevention frames 15 on both sides of the chassis S so as to be located at the container loading center position Q, respectively. This color marker 1 is formed of a magnet plate, and is divided into four parts in the horizontal direction as shown in FIG. 3, and turns into white, green, red, and green from the front side (from the left side in FIG. 3) in the moving direction of the chassis S. Color coded. The red portion forms the first collar portion 1A, and the first collar portion 1A is attached to the chassis S such that the center of the first collar portion 1A coincides with the container loading center position Q of the chassis S shown in FIG. The width dimension L of the first collar portion 1A is set to 1/1 / the allowable error between the center position R of the spreader beam 2 (the container hanging position of the crane T) and the container loading center position Q of the chassis S.
It is set to 2 or less. Therefore, when the center position R of the spreader beam 2 enters the range of the first color portion 1A,
The container C can be suspended. The green portions on both sides of the first color portion 1A form the second color portion 1B, and the white portions form the third color portion 1C.
The second color portion 1B and the third color portion 1C are used as recognition marks for lowering the moving speed of the chassis S.

As shown in FIGS. 1 and 2, the crane T
Each of the horizontal beams 4 of the legs 3 on both sides of the spreader beam 2 has the container loading center position Q of the chassis S.
Is provided with a color camera 5 having a defroster device having an iris diaphragm mechanism at a position where the color marker 1 can be imaged when the center position R coincides with the center position R of the color camera 5.
An illumination lamp 6 such as a halogen lamp for illuminating the imaging portion is provided.

A color monitor 7 for displaying an image captured by the color camera 5 at a position visible to the operator of the vehicle P pulling the chassis S with the front facing the horizontal beam 4 on the moving direction side of the chassis S. Is provided. As shown in FIG. 4, the color monitor 7 includes a positioning mark 8 indicating the center of the first color portion 1A when the container loading center position Q of the chassis S coincides with the center position R of the spreader beam 2. It is provided shifted from the center to the downstream side in the movement direction of the chassis S.

As shown in FIG. 5, a power supply panel 9 for supplying power to the color camera 5, the illuminating lamp 6, and the color monitor 7 is provided below each horizontal beam 4. A switch (not shown) provided in the power supply panel 9 can turn on / off the power of the color camera 5, the illumination lamp 6, and the color monitor 7.

The operation of the above configuration will be described below.
When the chassis S is pulled by the vehicle P and enters between the container yard Y and the leg 3 of the crane T, the side of the chassis S is imaged by the color camera 5 and the video signal is output to the color monitor 7. An image of the side of the chassis S is displayed on the color monitor 7.

When the vehicle P has passed the legs 3, the operator of the vehicle P decelerates slowly and moves the chassis S,
Attention is paid to the color monitor 7, and when the third color portion 1C of the color mark 1 appears on the color monitor 7 as shown in FIG. 4A, the brake is further applied to reduce the moving speed of the chassis S. When the second color portion 1B appears on the color monitor 7 as shown in FIG.
When the first color portion 1A is applied to the positioning mark 8 as shown in FIG. 4C, the chassis S is stopped, and as shown in FIG. The positioning mark 8 is set within the range. When the first color portion 1A passes the positioning mark 8, the chassis S is moved backward.

As described above, the color marker 1 provided on the side surface of the chassis S in relation to the container loading center position Q is provided.
Is imaged by the color camera 5 and displayed on the color monitor 7 so that the vehicle P that moves the chassis S
Can move the chassis S while watching the position of the color marker 1 displayed on the color monitor 7, so that the container loading center position Q of the chassis S can be easily adjusted to the center position R of the spreader beam 2. As a result, the burden on the operator can be reduced, the time for the above-described positioning can be reduced, and the time for cargo handling can be reduced.

Further, as the chassis S moves on the color monitor 7, the images appear in the order of the third color portion 1C and the second color portion 1B, so that the operator who moves the chassis S can use these third color portions. 1C and the second color portion 1B can be recognized as approaching the stop position, and by this recognition, the moving speed of the chassis S can be reduced in order, and a positioning mark is displayed in the range of the first color portion 1A to be displayed next. 8 can be adjusted exactly at one time. As a result, the container loading center position Q of the chassis S matches the center position R of the spreader beam 2, and the chassis S can be stopped accurately.

In addition, since the positioning mark 8 of the color monitor 7 is displaced from the center of the monitor to the downstream side in the moving direction of the chassis S, the positioning of the image of the first color portion 1A is performed after the image appears on the color monitor 7. The operator who moves the chassis S while moving slowly while taking time to overlap the position of the mark 8 can take a sufficient time to stop the chassis S accurately, so that the first color portion 1A to be displayed next is displayed. Positioning mark 8 in range
Can be adjusted more precisely at one time.

The positioning mark 8 on the color monitor 7
Is shifted from the center of the monitor to the downstream side in the moving direction of the chassis S, but may be provided substantially at the center of the monitor. At this time, as described above, the third color portion 1C and the second
Only by displaying the image in the order of the color portion 1B, the container loading center position Q of the chassis S and the center position R of the spreader beam 2 can be matched, and the chassis S can be stopped accurately.

Further, by forming the color marker 1 by a magnet plate, the mark can be easily and inexpensively attached to the chassis S. (Embodiment 2) In Embodiment 2, the controller 10 is added to the configuration of Embodiment 1 as shown in FIGS.
Buzzer 11, second camera 12, second monitor 13, buzzer
14 is added. In the second embodiment,
8 instead of the color marker 1 of the first embodiment.
The color marker 1 'shown in FIG. In addition,
In FIG. 7, the power supply panel 9 and the power supply circuit are omitted.

As shown in FIG. 8 (a), the color marker 1 'is formed by a magnet plate in which four red stripes and one red rectangular block are colored on a white background. The central red block sandwiched between the two red stripes forms a first color portion 1A ', and the center of the first color portion 1A' is defined by the container loading center position Q of the chassis S shown in FIG. And attached to the chassis S. The width L of the first collar portion 1A 'is set to be equal to or less than 1/2 of an allowable error between the center position (the container hanging position of the crane T) R of the spreader beam 2 and the container loading center position Q of the chassis S. ing. Therefore, when the center position R of the spreader beam 2 enters the range of the first collar portion 1A ', the container C can be suspended. The red stripes on both sides of the first color portion 1A 'form second color portions 1B', and these second color portions 1B 'are used as recognition marks for lowering the moving speed of the chassis S.

The controller 10 (which will be described in detail later) is disposed on each of the horizontal beams 4, a buzzer (first alarm means) 11 is disposed near the color monitor 7, and the second camera 12 is disposed on both Below the horizontal beam 4, the container loading center position Q of the chassis S and the center position R of the spreader beam 2 are aligned so that the wheels 16 of the stopped chassis S and the ground can be imaged. The second monitor 13 is a monitor that displays an image captured by the second camera 12, and is provided in an operator cab (not shown) of the crane T. Buzzer (second alarm means) 14
Is a buzzer that is driven by the controller 10 and sounds, and is provided in the cab of the crane T.

As shown in the block diagram of FIG. 7, the controller 10 has an image memory in which one frame of image data is stored.
21 and read out image data from this image memory 21,
A signal conversion unit 22 that converts the video signal into a video signal of the color monitor 7 and outputs the video signal; and a signal switching unit that switches the video signal output from the color camera 5 and the video signal output from the signal conversion unit 22 and outputs the video signal to the color monitor 7. 23, the color marker 1 'is recognized from the video signal output from the color camera 5, and when the first color portion 1A' is detected at the position of the positioning mark 8, the signal conversion portion 22 is driven during the detection. ,
By driving the signal switching unit 23, the video signal output from the signal conversion unit 22 is output to the color monitor 7, and the buzzer 1
It comprises an image processing unit 24 composed of a microcomputer, which outputs drive signals to 1 and 14. When the controller 10 is out of order or when the power of the controller 10 is turned off, the video signal output from the color camera 5 is output to the color monitor 7 via the signal switching unit 23.

The operation of the above configuration will be described below.
When the chassis S is pulled into the space between the container yard Y and the legs 3 of the crane T by being pulled by the vehicle P, the side surface of the chassis S is imaged by the color camera 5, and the video signal is input to the controller 10. The image processing section 24 of the controller 10 recognizes the first color section 1A 'of the color marker 1' by performing image processing from the input video signal of the color camera 5. First, since only the side surface of the chassis S is imaged, the first color unit 1A 'is not recognized, so that the signal conversion unit 22 and the signal switching unit 23 are not driven, and the video signal output from the color camera 5 is not driven. Are output to the color monitor 7.

When the vehicle P has passed the leg 3, the operator of the vehicle P decelerates slowly and pays attention to the color monitor 7 while moving the chassis S. When the collar 1B 'is confirmed, the moving speed of the chassis S is further reduced, and the positioning mark 8
When the first collar portion 1A 'is engaged, the chassis S is stopped.

When the image processing section 24 of the controller 10 detects the first color section 1A 'at the position of the positioning mark 8 by the image processing of the video signal of the color camera 5, it drives the signal conversion section 22 to switch the signal. The unit 23 is driven to output the video signal output from the signal conversion unit 22 to the color monitor 7, and further outputs a drive signal to the buzzers 11 and 14 for a predetermined time. Accordingly, the image data of the image memory 21 is displayed on the color monitor 7, for example, the entire screen or a part thereof becomes red, and the buzzer 11 is sounded to strongly urge the operator of the vehicle P to stop the chassis S. Simultaneously, the buzzer 14 sounds and informs the operator of the crane T in the cab that the chassis S has moved to the stop position. When the first color section 1A 'passes the position of the positioning mark 8, the driving of the signal conversion section 22 is stopped, and the video signal output from the color camera 5 is output to the color monitor 7 again by the signal switching section 23. Then, the buzzers 11 and 14 are stopped. Therefore, the video signal of the color camera 5 is displayed on the color monitor 7 again. The operator of the vehicle P retreats the chassis S while watching the color monitor 7.

When the container C is lifted by the spreader beam 2, images of the wheels 16 of the chassis and the ground taken by the second camera 12 are displayed on the second monitor 13 in the operator's cab of the crane T. The operator checks whether or not the chassis S has been lifted together with the container C, and lowers the spreader beam when checking the lifting.

As described above, in the second embodiment, in addition to the effect of the first embodiment, when the container C is lifted by the spreader beam 2, the wheels 7 of the chassis S imaged by the second camera 12 and the ground 7 Is displayed on the second monitor 13 in the operator's cab of the crane T, the operator of the crane T can check whether the chassis S has been lifted together with the container C, and when checking the lift, the spreader beam By lowering 2, it is possible to prevent the chassis S from being detached from the suspended container C, and to prevent the chassis S and the towing vehicle P from falling.

The controller 10 detects the first color portion 1A 'from the image data of the color camera 5, changes the color of the color monitor 7 and sounds the buzzers 11 and 14, thereby moving the chassis P. The operator of
The stop position of the chassis S can be clearly recognized, and the chassis S can be accurately stopped at a predetermined position. Further, a change in the color of the color monitor 7 can be confirmed even in the rearview mirror of the vehicle P, so that the operator does not need to look back at the monitor 7 and the workability can be improved. Also buzzer 14
, The operator of the crane T in the operator's cab can confirm that the chassis S has arrived at the stop position, and by lowering the spreader beam 2 based on this confirmation, the working time can be shortened. Efficiency can be improved. In the color marker 1 ', two stripes are formed in front of the central rectangular block, so that the central rectangular block can be easily recognized by image processing.

In the above embodiment, the color markers 1, 1 'are formed by the magnet plate.
Painting in place of this magnet plate,
Or by simply attaching color tape,
In addition, the color markers 1, 1 'can be formed at low cost.

Although the color marker 1 is composed of four color sections, it can be composed of only the first color section 1A. Further, although the color marker 1 is formed by one marker, a plurality of markers separated into each color portion may be used.

The color marker 1 'is constructed by providing a red portion on a white background as shown in FIG. 8 (a), but the color is not limited to white / red and is shown in FIG. 8 (b). Any combination of colors with clear shades may be used. The marker 1 ″ shown in FIG. 8B is formed by a magnet plate in which four white stripes and one white rectangular block are colored on a black background. The marker 1 ″ is sandwiched between two white stripes. The white block in the center is the first color part 1
A "is formed, and the first collar portion 1A" is attached to the chassis S so that the center of the first collar portion 1A "coincides with the container loading center position Q of the chassis S shown in FIG. In addition, the width dimension L of the first collar portion 1A "is determined by the center position of the spreader beam 2 (the container hanging position of the crane T) R and the chassis S
Is set to 1/2 or less of the allowable error with respect to the container loading center position Q. Therefore, when the center position R of the spreader beam 2 falls within the range of the first collar portion 1A ", the container C can be suspended. In addition, the first collar portion 1A"
Are formed as second color portions 1B ", and these second color portions 1B" are used as recognition marks for lowering the moving speed of the chassis S.

Although only red data is stored as image data stored in the image memory 21, other colors may be used, and character data such as "STOP" may be stored and displayed. You can also.

The mounting position of the color monitor 7 can be changed in accordance with the direction in which the chassis S enters the crane T. When the chassis S can be frequently entered from both directions, both ends of each horizontal beam are provided. The color monitor 7 can be attached to the camera.

The crane T displays images of the wheels of the chassis S and the ground taken by the second camera 12 on the monitor 13 to confirm that the chassis S has been lifted. Instead of 13, a proximity sensor is provided in the vicinity of the contact portion of the wheels 16 of the chassis S stopped at the container loading center position with the ground, and the wheels 7 of the chassis S float above the ground by the proximity sensor in the cab of the crane T. A buzzer (third alarm means) that operates when the occurrence of the alarm is detected may be provided, and the same effect can be obtained.

Although the present invention is applied to the transfer crane, it can be applied to a gantry crane.

[0056]

As described above, according to the first aspect of the present invention,
A color marker provided in relation to the container loading center position on the side of the chassis is imaged by a color camera,
Displayed on the color monitor, which is positioned forward and below the legs in the direction of movement of the chassis, the operator who moves the chassis can move the chassis while looking at the position of the color marker displayed on the color monitor. Thus, the chassis can be stopped easily by matching the container loading center position of the chassis with the container lifting position.
Therefore, the burden on the operator can be reduced, the time required for the above-described positioning can be reduced, and the time required for cargo handling can be reduced.

According to the second aspect of the present invention, the image is displayed on the color monitor from the second color portion as the chassis moves, so that the operator who moves the chassis can check the second color portion. By recognizing that the vehicle has approached the stop position, the moving speed of the chassis is reduced, and when the chassis is stopped by recognizing the first color portion to be displayed next, the chassis can be stopped accurately.

Further, according to the third aspect of the present invention, the image is displayed from the second color portion regardless of the direction of the approach of the chassis from any direction on the color monitor. By confirming the second collar part, it is possible to recognize that the vehicle has approached the stop position. By lowering the moving speed of the chassis, the chassis is accurately stopped when the chassis is stopped by the recognition of the first collar part displayed next. Can be done.

Further, according to the fourth aspect of the present invention, the color marker is formed on the side surface of the chassis simply and by forming the color marker by paint coating, a color adhesive tape, or a magnet colored on the surface. It can be installed at low cost.

According to the fifth aspect of the present invention, since the positioning mark of the color monitor is displaced from the center of the monitor to the downstream side in the moving direction of the chassis, the positioning mark of the color marker appears on the color monitor after the image of the color marker appears on the color monitor. The operator who moves the chassis because it takes time to overlap the position, reduces the moving speed of the chassis when confirming the image of the color marker, so that the image of the color marker can be accurately superimposed on the position of the positioning mark And the chassis can be stopped accurately.

Further, according to the sixth aspect, the coincidence between the container loading center position of the chassis and the container lifting position of the crane is detected from the image data of the color camera, and the color of the color monitor is changed, thereby moving the chassis. The operator who stops the operation can stop the chassis at a predetermined position accurately by stopping the chassis based on a change in the color of the color monitor. Further, a change in the color of the color monitor can be confirmed even in the rearview mirror, and the operator does not need to look back at the monitor, thereby improving workability.

According to the seventh aspect of the present invention, the alarm means is driven in addition to the change in the color of the color monitor.
An operator who moves the chassis can strongly recognize the stop position of the chassis, and can stop the chassis at a predetermined position accurately by stopping the chassis at this position.

Further, according to the eighth aspect of the present invention, by driving the second alarm means in the crane cab, the crane operator can determine that the chassis has moved to the predetermined position, and based on this determination. By lowering the spreader beam, the working time can be shortened and the working efficiency can be improved.

According to the ninth aspect of the present invention, the images of the wheels and the ground of the chassis taken by the second camera are displayed on the second monitor in the cab of the crane. It can be checked whether the container is lifted together with the container. When the lifting is confirmed, the spreader beam is lowered, whereby the chassis is detached from the container being lifted, and the chassis and its towing vehicle can be prevented from falling.

Further, according to the tenth aspect of the present invention, when the proximity sensor detects that the wheels of the chassis have floated above the ground, the third alarm means is activated, so that the operator of the crane lifts the chassis together with the container. By lowering the spreader beam when lifting is confirmed, it is possible to prevent the chassis from being detached from the suspended container and to prevent the chassis and its towing vehicle from falling.

[Brief description of the drawings]

FIG. 1 is a side view of a transfer crane provided with a position display device and a chassis according to Embodiment 1 of the present invention.

FIG. 2 is a front view of a main part of a transfer crane provided with the positioning display equipment and a chassis.

FIG. 3 is a front view of a color marker of the positioning display equipment.

FIG. 4 is a front view of a color monitor of the positioning display equipment.

FIG. 5 is a circuit diagram of the positioning display equipment.

FIG. 6 is a plan view of a main part of a transfer crane and a chassis provided with a positioning display device according to Embodiment 2 of the present invention.

FIG. 7 is a configuration diagram of the positioning display equipment.

FIG. 8 is a front view of a color marker of the positioning display equipment.

FIG. 9 is a layout view of a container terminal.

[Explanation of symbols]

1, 1 ', 1 "color marker 2 spreader beam 3 crane leg 4 horizontal beam of crane 5 color camera 6 lighting 7 color monitor 8 positioning mark 9 power board 10 controller 11 buzzer (alarm means) 12 second camera 13 Second monitor 14 Buzzer (second alarm means) 15 Entrapment prevention frame 16 Chassis wheel C Container P Chassis towing vehicle Q Chassis loading center position R Spreader beam center position (container lifting position) S Chassis T Transfer crane Y container yard

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Soichi Haruyama 1-15-10 Kyomachibori, Nishi-ku, Osaka-shi, Osaka Toyo Hakko Co., Ltd. (72) Inventor Isamu Namba 2 Chome 14-3 TCM M Hyogo Sales Co., Ltd.

Claims (10)

[Claims] 1. A facility for indicating to a crane for loading / unloading work that lifts and transfers a container that a chassis has stopped at a container lifting position of the crane, the container being loaded on a side surface of the chassis. In connection with the center position, a color marker is provided, and the crane is provided with a color camera arranged at a position where the color marker can be imaged when the chassis is stopped at the container lifting position, and a moving direction side of the chassis. A chassis position display facility, comprising: a color monitor that is disposed forward of a lower part of the leg and displays an image captured by the color camera. 2. The chassis position display equipment according to claim 1, wherein the color marker has a width dimension set based on an error range in which a deviation between a container loading center position of the chassis and a container lifting position of the crane is allowed. And a second color portion provided in at least one side of the first color portion in a color different from the first color portion. 3. The chassis position display equipment according to claim 2, wherein the second collar portion is provided around the first collar portion. 4. The method according to claim 1, 2 or 3.
The chassis position indicating equipment as described above, wherein the color marker is formed on the side surface of the chassis by painting, by a color adhesive tape, or by a magnet colored on the surface. 5. The chassis position display equipment according to claim 1, wherein the color monitor is provided with a positioning mark shifted from a monitor center to a downstream side in a moving direction of the chassis. 6. The chassis position display device according to claim 1, wherein a color marker is detected based on image data of the color camera, and the container loading center position of the chassis and the container lifting position of the crane are matched by the color marker. A controller is provided for changing the color of the color monitor when detecting this. 7. The chassis position display equipment according to claim 6, wherein an alarm is provided near the color monitor of the crane, and the controller notifies the controller that the container loading center position of the chassis coincides with the crane container lifting position. A function of driving the alarm means upon detection is added. 8. The chassis position display equipment according to claim 6, wherein a second alarm means is provided in the cab of the crane, and the controller is configured to determine a container loading center position of the chassis and a container lifting position of the crane. A function of driving the second alarm means upon detecting the coincidence is added. 9. The chassis position display equipment according to claim 1, wherein the crane is provided with a second camera arranged so as to be able to take an image of the wheels of the chassis stopped at the container lifting position and the ground. And a second monitor for displaying an image captured by the second camera. 10. The chassis position display device according to claim 1, wherein the crane is provided with a proximity sensor near a contact portion of a wheel of the chassis stopped at a container lifting position with the ground, and the operation room of the crane includes: Third alarm means is provided which is activated when the proximity sensor detects that the wheels of the chassis have floated above the ground.