JP2004284730A - Display device and safety device for crane - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display corresponding relation of a drum and a hook so as to enable easy understanding. <P>SOLUTION: An illustration 201 of a crane, illustrations 202 to 204 of the drums 103a to 103c, an illustration 210 of a suspension cargo, and work information are displayed on a moment limiter screen. The corresponding relation of the hooks 120, 121 and the drums 103a to 103c is set in a controller 50 in advance. When display of a main suspension screen is selected by operation of an arrow mark key 5c, the illustration 202 of the drum (for example, auxiliary winding drum 103b) corresponding to the main hook 120 is displayed by emphasizing it. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a display device and a safety device of a crane for displaying a correspondence between a plurality of hoisting drums and a hanger.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been known a crane in which work information of a crane is displayed on a monitor screen together with an illustration of the crane (for example, see Patent Document 1). According to this, the suspended load is displayed as an illustration, and the drum corresponding to the position of the suspended load is also displayed as an illustration.
[0003]
[Patent Document 1]
Japanese Patent No. 3136110 (FIGS. 7 to 13)
[0004]
[Problems to be solved by the invention]
By the way, in a crane having a plurality of hoisting drums, the correspondence between the hoisting drums and the hanger may be changed according to the work content. For example, the main hook may be wound by the main winding drum, or the main hook may be wound by the auxiliary winding drum. Therefore, it is necessary for the operator to set in advance the correspondence between the hoist and the hoisting drum before performing the crane operation.In order to correctly operate the drum during the crane operation, this setting state is displayed on the monitor screen. It is desirable to display the information and notify the operator of the correspondence between the drums. However, in the device described in the above-mentioned publication, only the drum corresponding to the hanging device is displayed, and other drums are not displayed. Therefore, there is a possibility that the operator cannot immediately recognize which drum is displayed.
[0005]
SUMMARY OF THE INVENTION The present invention provides a display device and a safety device for a crane in which a correspondence between a drum and a hanger is displayed in an easily understandable manner.
[0006]
[Means for Solving the Problems]
A display device for a crane according to the present invention is an image signal generating means for generating an image signal for displaying an illustration of a crane, an illustration of a plurality of hoisting drums mounted on the crane, and an illustration showing a hanger together with work information. And a monitor device that displays each illustration and work information on the same screen based on the image signal, and a setting unit that sets a correspondence relationship between the hanging tool and the plurality of hoisting drums. While displaying a plurality of hoisting drums, based on the setting of the setting means, an image signal is generated so that the hoisting drum corresponding to the hanger is displayed with being emphasized more than other hoisting drums. .
A safety device for a crane according to the present invention includes the above-described display device and a drum stopping unit that stops the hoisting drum when an erroneous setting is detected by the erroneous setting detecting unit.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
-1st Embodiment-
Hereinafter, a first embodiment of a display device according to the present invention will be described with reference to FIGS.
FIG. 1 is an external side view showing a configuration of a tower crane to which the present invention is applied. The tower crane includes a traveling body 111, a revolving body 113 rotatably mounted on the traveling body 111, a boom 114 rotatably supported at a tip end of the revolving body 113, and a rotating tip of the boom 114. And a front attachment 116 having a jib 115 movably pivotally supported. 117 is a counter weight.
[0008]
The main winding drum 103a, the auxiliary winding drum 103b, and the third drum 103c are mounted on the revolving unit 113. A main winding rope 118 is wound around the main winding drum 103a, and the main winding rope 118 is connected to a main hook 120 via a boom tip. An auxiliary winding rope 119 is wound around the auxiliary winding drum 103b, and the auxiliary winding rope 119 is connected to an auxiliary hook 121 via a jib tip. When the main winding drum 103a is driven, the main winding rope 118 is wound or unwound, and the main hook 120 moves up and down. When the auxiliary winding drum 103b is driven, the auxiliary winding rope 119 is wound or unwound, and the auxiliary hook 121 moves up and down. In FIG. 1, the main hook 120 corresponds to the main winding drum 103a, and the auxiliary hook 121 corresponds to the auxiliary winding drum 103b. However, these correspondences can be changed according to the work content.
[0009]
FIG. 2 is a block diagram illustrating a configuration of the display device according to the first embodiment. The controller 50 includes an angle detector 1 that detects a boom angle with respect to the revolving unit 113 and a jib angle with respect to the boom 114, a load detector 2 that detects a suspended load, and detects presence or absence of rotation of the drums 103a to 103c. Drum rotation detector 3, hanging metal height detector 4 for detecting the heights of hooks 120 and 121, input device 5 for inputting various commands by an operator's operation, and stopping supply of drum driving pressure oil An electromagnetic proportional valve 6, a display 7 for displaying work information, a speaker 8, and a camera 9 for monitoring surroundings are connected. The load detector 2 is, for example, a load cell that detects the tension of the undulating rope (see FIG. 1), and calculates the suspension load from the detected tension value. The hanging bracket height detector 4 is, for example, a lift meter, detects the amount of rotation of the drums 103a to 103c from the initial state, and obtains the heights of the hooks 120 and 121 from the detected value. The input device 5 has arrow keys 5a, 5b, 5c, 5d, a return key 5e, and a cancel key 5f.
[0010]
FIG. 3 is a block diagram showing a configuration inside the controller 50. The controller 50 includes a CPU 61, a ROM 62 for storing a rated load curve (relation between a limit working radius and a limit load) according to various programs and crane specifications, a rotatable range of the boom 114 and the jib 115, and a RAM 63. A single-chip microcomputer 60 including an A / D converter 65 for converting signals from the detectors 1 to 4 from an analog signal to a digital signal, and an input interface 64 for inputting a signal from the input device 5; A nonvolatile EEPROM 53 for storing various specification values set by an operator, a display unit 52 for generating an image signal based on a signal from the single-chip microcomputer 60, an output interface 51 for outputting the image signal to the display 7, and an electromagnetic proportional valve 6 has an amplifier 54 for outputting a signal.
[0011]
The CPU 61 calculates the actual working radius and the actual load of the suspended load suspended on the hooks 120 and 121 based on the signals from the angle detector 1 and the load detector 2, and calculates the actual load with respect to the limit load at the working radius. Calculate the load ratio (load ratio). When the load factor becomes equal to or more than a predetermined value α (for example, 100%), a control signal is output to the electromagnetic proportional valve 6, and the driving of the drums 103a to 103c is stopped. This limits the load acting on the crane and prevents the crane from tipping over. That is, the controller 50 has a function as a safety device such as an overload prevention device (moment limiter). Further, the controller 50 executes the following image display processing to control the image on the display 7.
[0012]
FIG. 4 is a flowchart illustrating an example of a display process in the controller 50 after the main power is turned on. In the EEPROM 53, the specifications of the crane set in advance by the operator in accordance with the actual machine, specifically, the presence / absence and length of the boom 114 and the jib 115, and the correspondence between the drums 103a to 103c and the hooks 120 and 121 (FIG. ) And a rated load curve according to the specifications of the crane. Hereinafter, the actual machine is set so that the main hook 120 is moved up and down by driving the auxiliary winding drum 103b and the auxiliary hook 121 is moved up and down by driving the main winding drum 103a. The winding drum 103b will be described assuming that the main winding drum 103a is set for the auxiliary hook 121, respectively.
[0013]
4, first, in step S1, various setting values stored in the EEPROM 53 are read. Next, in step S2, signals from the detectors 1 to 4 are read. In step S3, the display mode of the moment limiter screen is determined. The display mode determined here is the main suspension display mode for displaying the main suspension operation by the main hook 120 or the auxiliary suspension display mode for displaying the auxiliary suspension operation by the auxiliary hook 121, and the arrow key 5c of the input device 5 is used. When operated, the main suspension display mode is determined. When the arrow key 5d is operated, the auxiliary suspension display mode is determined. In the initial state immediately after the power is turned on, the main suspension display mode is set.
[0014]
If the main suspension display mode is determined in step S3, the process proceeds to step S4, where a predetermined image signal is generated, and a main suspension moment limiter screen (main suspension screen) is displayed on the display 7. FIG. 5 shows an example of the main hanging screen. On the display 7, an illustration 201 of the crane and an illustration 210 of the main hook 120 are displayed, and various set values, detected values, and limit values are displayed corresponding to the illustrations 201 and 210, respectively. That is, the detected height of the main hook 120 is displayed on the display unit 207, the detected boom angle is displayed on the display unit 208, the actual working radius is displayed on the display unit 209, the actual hanging load is displayed on the display unit 211, and the limit load is displayed on the display unit 212. However, the jib angle detection value is displayed on the display unit 213, the boom length setting value is displayed on the display unit 214, and the jib length setting value is displayed on the display unit 215. Drum illustrations 202, 203, and 204 are displayed on the illustration 201 so as to correspond to the positions of the drums 103a, 103b, and 103c. “F” representing the main winding drum 103a is displayed in the illustration 202, “R” representing the auxiliary winding drum 103b is displayed in the illustration 203, and “3” representing the third drum 103c is displayed in the illustration 204, respectively.
[0015]
Further, in the present embodiment, the illustration 203 of the drum 103b corresponding to the main hook 120 is displayed more emphasized than the other illustrations 202 and 204. In this case, the illustration 203 is highlighted by displaying the illustration 203 darker than the other illustrations 202 and 204, displaying the illustration 203 in a different color, or blinking only the illustration 203. This makes it clear on the screen that the auxiliary winding drum 103b corresponds to the main hook 120. When the illustration 203 is displayed in a different color, if the color of the illustration 203 matches the color of the illustration 210 of the main hook 120, the correspondence between the main hook 120 and the auxiliary winding drum 203 becomes clearer.
[0016]
In FIG. 5, a clock 221, an engine speed meter 222, and a load factor meter 223 are also displayed. Further, key operation guidance, specifically, operation guidance of the arrow keys 5c and 5d and the return key 5e is displayed on the display unit 224, and a symbol indicating the current display mode is displayed on the display unit 225 at the upper left of the screen. I have.
[0017]
When the main hanging screen is displayed in step S4, the process proceeds to step S5, and it is determined whether or not the drum 103b corresponding to the main hook 120 is rotating based on a signal from the drum rotation detector 3. When step S5 is affirmed, the process proceeds to step S6, and when denied, the process proceeds to step S10. In step S6, the illustration 203 of the drum 103b corresponding to the main hook 120 is rotated. Thereby, the display of the illustration 203 is further emphasized. In step S10, it is determined whether a command to display a menu screen has been output by operating the return key 5e. When step S10 is affirmed, the menu screen is displayed, and when denied, the process returns.
[0018]
On the other hand, if it is determined in step S3 that the display mode is the suspension display mode, the process proceeds to step S7, and a suspension limit moment limit screen (suspension screen) as shown in FIG. 6 is displayed. In this case, an illustration 201 of the crane and an illustration 216 of the auxiliary hook 121 are displayed, and various set values, detected values, and limit values are displayed corresponding to the illustrations 201 and 216, respectively. Further, the illustration 202 of the drum 103a corresponding to the auxiliary hook 121 is displayed more emphasized than the other illustrations 203 and 204. Next, in step S8, it is determined whether or not the drum 103b corresponding to the auxiliary hook 121 is rotating based on a signal from the drum rotation detector 3. When step S8 is affirmed, the process proceeds to step S9, and when denied, the process proceeds to step S10. In step S9, the illustration 202 of the drum 103a corresponding to the auxiliary hook 121 is rotated.
[0019]
When setting the specifications of the crane, a menu screen (not shown) is displayed by operating the return key 5e (step S10). Menu items such as “moment limiter”, “specification setting”, and “inspection” are displayed on the menu screen. When “moment limiter” is selected, the moment limiter screens shown in FIGS. 5 and 6 are displayed. When "Specification setting screen" is selected, a specification setting screen as shown in FIG. 7 is displayed. On the specification setting screen, the setting values corresponding to the selected items are displayed in a table format, and the operator sets the specifications by operating the input device 5 while watching this display.
[0020]
For example, when the drum corresponding to the auxiliary hook 121 is set as the main winding drum 103a, the operator moves the selection bar 100 to the setting item "auxiliary hanging" as shown in FIG. The selection bar 100 is moved by operating the arrow keys 5a and 5b, for example. In each setting item, a set value candidate (in this case, “main drum”, “supplementary drum”, “third drum”) is stored in advance, and the operator selects a drum (from this drum) according to the actual machine. In this case, select “Main winding drum”). The selection of the set value is performed, for example, by operating the arrow keys 5c and 5d. After the above selection operation, the return key 5e is operated, and the set value is stored in the EEPROM 53.
[0021]
When the work of hoisting the auxiliary hook 121 is performed by driving the main winding drum 103a, the drum display corresponding to the auxiliary hook 121 is set to the main winding drum 103a on the specification setting screen as described above, and the screen display is shown in FIG. Switch to the suspension screen. As a result, the illustration 216 of the auxiliary hook 121 is displayed, and the illustration 202 of the main winding drum 103a is highlighted (step S7), so that the operator can recognize the correspondence between the auxiliary hook 121 and the drum 103a. . As a result, erroneous operation of the drums 103b and 103c can be prevented. When the main drum 103a rotates in this state, the illustration 202 also rotates (step S9), so that the operator can recognize the actual rotation state of the main drum 103a.
[0022]
In this case, a rated load curve according to the specifications of the crane is set in advance in the EEPROM 53, and the driving of the drums 103a to 103c is restricted based on the rated load curve corresponding to the auxiliary hanging operation. That is, when the load factor reaches the predetermined value α during the suspension operation, the overload prevention device as a safety device operates, outputs a control signal to the electromagnetic proportional valve 6, and stops driving the drums 103a to 103c. This can prevent the crane from falling.
[0023]
When the arrow key 5d is operated while the auxiliary hanging screen is displayed, the main hanging screen is displayed. Thus, the operator can confirm the correspondence between the main hook 120 and the drum 103b without returning to the setting screen. In this case, since the suspended load is not suspended on the main hook 120, 0t is displayed on the display section 211 of the main suspension screen. When the arrow key 5d is operated in this state, the screen is switched to the auxiliary hanging screen.
[0024]
On the other hand, when the hoisting operation of the main hook 120 is performed by driving the auxiliary hoist drum 103b, the drum corresponding to the main hook 120 is set in advance to the auxiliary hoist drum 103b, and then the screen display is switched to the auxiliary suspension screen shown in FIG. . As a result, the illustration 210 of the main hook 120 is displayed, and the illustration 203 of the auxiliary winding drum 103b is highlighted (step S4), so that the operator can recognize the correspondence between the main hook 120 and the drum 103b. . When the auxiliary drum 103b rotates in this state, the illustration 203 also rotates (step S6), so that the operator can recognize the actual rotation state of the auxiliary drum 103b. In this case, the driving of the drums 103a to 103c is restricted based on the rated load curve corresponding to the main suspension operation.
[0025]
According to the first embodiment described above, the following operation and effect can be obtained.
(1) The correspondence between the hooks 120 and 121 and the drums 103a to 103c is set in advance, and the drums 103a to 103c corresponding to the hooks 120 and 121 are displayed in an emphasized manner. It is possible to easily recognize which drums 103a to 103c correspond to each other. Thus, the operator can easily drive the drums 103a to 103c corresponding to the hooks 120 and 121 based on the screen display.
(2) Since the illustrations 202 to 204 of all the drums 103a to 103c are displayed on the crane illustration 201 so as to correspond to the positions of the drums 103a to 103c, respectively, compared to the case where only the corresponding drum illustration is displayed. It is easy to grasp the correspondence between the drum and the hook. That is, when only the corresponding drum illustration is displayed at a different display position, the operator judges the difference in the display position and recognizes which drum the displayed illustration is. Many. On the other hand, if the illustrations 202 to 204 of all the drums are displayed and the corresponding illustrations are highlighted, the possibility of erroneous recognition is small.
(3) Since the illustrations 202 to 204 of the drums 103a to 103c are rotated and displayed, the correspondence between the hooks 120 and 121 and the illustrations 202 to 204 is further emphasized, and the operator can correctly grasp the correspondence. Further, the operator can check the actual rotation state of the drums 103a to 103c.
[0026]
In the above description, the illustration 210 of the main hook 120 is displayed in the main hanging display mode, and the illustration 216 of the auxiliary hook 121 is displayed in the auxiliary hanging display mode. However, the illustrations 210 and 216 corresponding to the display mode are highlighted. If so, the display form is not limited to this. For example, while displaying the illustrations 210 and 216 simultaneously, the illustration 210 may be displayed more emphasized than the illustration 215 in the main hanging display mode, and the illustration 216 may be displayed more emphasized than the illustration 210 in the auxiliary hanging display mode. Good.
[0027]
-2nd Embodiment-
A second embodiment of the display device according to the present invention will be described with reference to FIGS.
In the first embodiment, the correspondence between the hooks 120 and 121 and the drums 103a to 103c set by the operator is displayed, but in the second embodiment, the operator further sets an incorrect correspondence. Sometimes, a message is displayed to inform the user. In the following, differences from the first embodiment will be mainly described.
[0028]
FIG. 8 is a flowchart illustrating an example of a display process according to the second embodiment. The same portions as those in FIG. 4 are denoted by the same reference numerals, and the differences will be mainly described below. If the main hanging display mode is determined in step S3, the process proceeds to step S21, and it is determined whether or not the auxiliary hook 121 has moved based on a signal from the hanging bracket height detector 4. If the correspondence between the drums 103a to 103c and the main hook 120 is incorrectly set, for example, the main hook 120 corresponds to the drum 103a, and the auxiliary hook 121 corresponds to the drum 103b. And the drum 103a correspond, the main hook 120 does not move and the auxiliary hook 121 moves even when the drum 103b displayed on the screen is driven. Therefore, in step S21, it is determined whether or not the auxiliary hook 121 has moved, and it is determined whether or not the correspondence between the drum and the main hook 120 has been erroneously set. When step S21 is affirmed, the process proceeds to step S22, and when denied, the process proceeds to step S4.
[0029]
In step S4, the above-described main hanging screen (FIG. 5) is displayed. In step S22, an illustration 216 of the auxiliary hook 121 is displayed on the main hanging screen as shown in FIG. The actual hanging load (0t) and the limit load of the auxiliary hook 121 are respectively displayed on the display units 217 and 218 in the illustration 216 of FIG. Next, at step S23, the message "Setting is incorrect" is displayed on the display section 226 of the display 7. Is output. The speaker 8 may output an alarm by voice. Next, in step S24, a control signal is output to the electromagnetic proportional valve 6 to stop driving the drums 103a to 103c, and the process proceeds to step S10. Step S24 is processing in the safety device.
[0030]
On the other hand, if it is determined in step S3 that the mode is the auxiliary hanging display mode, the process proceeds to step S25 to determine whether or not the main hook 120 has moved according to a signal from the hanging metal height detector 4, that is, the correspondence between the drum and the auxiliary hook 120. It is determined whether the setting has been made by mistake. When step S25 is affirmed, the process proceeds to step S26, and when denied, the process proceeds to step S7. In step S7, the above-described suspension screen (FIG. 6) is displayed. In step S26, the illustration 210 of the main hook 120 is displayed over the auxiliary hanging screen. Although illustration is omitted, in this case also, the actual hanging load (0t) and the limit load of the main hook 120 are displayed on the display units 211 and 212 in the illustration 210, respectively. Next, in step S27, a predetermined warning message is output to the display unit 226 of the display 7, and in step S28, a control signal is output to the electromagnetic proportional valve 6 to stop driving the drums 103a to 103c, and the process proceeds to step S10.
[0031]
In the second embodiment, the main hook 120 corresponds to the main winding drum 103a in the actual machine, whereas the main hook 120 corresponds to the auxiliary winding drum 103b, and the auxiliary hook 121 corresponds to the main winding drum 103a on the setting screen. If it is set incorrectly, it operates as follows. That is, when the main hanging screen as shown in FIG. 5 is displayed at the start of the main hanging work, the correspondence between the main hook 120 and the drum (in this case, the auxiliary winding drum 103b) set by the operator is displayed. The operator drives the auxiliary drum 103b while watching the screen display to perform the main hanging operation. In practice, however, the auxiliary drum 103b and the auxiliary hook 121 correspond to each other. 121 moves.
[0032]
When the movement of the auxiliary hook 121 is detected by the hanging metal height detector 4, the illustration 216 of the auxiliary hook 121 is superimposed on the display 7, an alarm message is output, and the driving of the drums 103a to 103c is further performed. Is stopped (steps S22 to S24). This allows the operator to recognize that the correspondence between the main hook 120 and the drum has been set erroneously, and prevents the auxiliary hook 121 from moving undesirably because the safety device operates and the drums 103a to 103c stop. it can. After the above operation, the operator returns to the setting screen and performs the setting of the hook 120 and the drum again.
[0033]
As described above, according to the second embodiment, for example, when the movement of the auxiliary hook 121 is detected while the main hanging screen is being displayed, the illustration 216 of the auxiliary hook 121 is displayed in an overlapping manner. It can be easily recognized that the correspondence between the and the drum is set incorrectly. At this time, since the driving of the drums 103a to 103c is stopped, it is possible to prevent the unintended operation of the hook 121. Since the illustration 216 of the hook 121 that has actually moved is displayed on the upper side, the hook 121 is highlighted and displayed, and the operator can recognize the hook 121 that has actually moved.
[0034]
The controller 50 generates an image signal and displays the crane illustration 201, the drum illustrations 202 to 204, and the hooks 120 and 121 illustrations 210 and 216 on the display 7, but what each illustration represents. The shape of the illustration is not limited to the embodiment as long as it can be identified. On the specification setting screen, the setting means sets the correspondence between the hanging tools (hooks 120, 121) and the drums 103a to 103c, but one drum does not always correspond to one hanging tool. For example, one suspended load may be wound up by a plurality of drums, and the setting means sets the correspondence between the suspending tool and the drums 103a to 103c on a case-by-case basis. Although the drums 103a to 103c are stopped by driving the electromagnetic proportional valve 6, the structure of the drum stopping means is not limited to this.
[0035]
Although the main hanging screen or the auxiliary hanging screen is selected by the key operation of the input device 5, other selecting means may be used. Drum detecting means may be configured by means other than the drum rotation detector 3. When the rotation of the drums 103a to 103c is detected by the drum detector 3, the corresponding drum illustrations 202 to 204 are rotated. However, the illustrations 202 to 204 may be emphasized by a moving display (for example, blinking display). It is not necessary to rotate. The erroneous setting of the correspondence between the hangers and the drums 103a to 103c is detected by the hanger height detector 4, but another configuration may be adopted as the erroneous setting detecting means. Although the illustrations 210 and 216 of the suspended load are displayed in a superimposed manner to notify the operator of the erroneous setting, other display forms may be used as the notification means.
[0036]
The above embodiment is applied to a tower crane having a plurality of hanging members in the above embodiment, but if the correspondence between the hanging members and the drums 103a to 103c can be changed, the number of hanging members is not limited to plural. The present invention can be similarly applied to cranes other than the tower crane. That is, the present invention is not limited to the display device of the embodiment as long as the features and functions of the present invention can be realized.
[0037]
【The invention's effect】
As described in detail above, according to the present invention, an illustration of a crane, an illustration of a plurality of hoisting drums mounted on the crane, and an illustration showing a hanger are displayed together with work information and corresponding to the hanger. Since the hoisting drum is displayed in a more emphasized manner than the other hoisting drums, the correspondence between the drum and the hanger becomes clear, and the operator can easily recognize this correspondence.
[Brief description of the drawings]
FIG. 1 is an external side view of a tower crane to which the present invention is applied.
FIG. 2 is a block diagram showing a configuration of a safety device according to the first embodiment of the present invention.
FIG. 3 is a block diagram showing a configuration inside a controller of FIG. 2;
FIG. 4 is a flowchart illustrating an example of processing in a controller included in the display device according to the first embodiment.
FIG. 5 is a diagram showing an example of a screen display (main hanging screen) by the display device according to the first embodiment.
FIG. 6 is an exemplary view showing another example of the screen display (suspended screen) by the display device according to the first embodiment.
FIG. 7 is a view showing still another example (specification setting screen) of screen display by the display device according to the first embodiment.
FIG. 8 is a flowchart illustrating an example of processing in a controller included in the display device according to the second embodiment.
FIG. 9 is a view showing an example of a screen display (main hanging screen) by the display device according to the second embodiment.
[Explanation of symbols]
3 Drum rotation detector 4 Suspension bracket height detector
5 Input device 6 Electromagnetic proportional valve
7 display 50 controller
201 Crane illustration 202-204 Drum illustration
210, 216 Illustration of hanging load

Claims (8)

Image signal generating means for generating an image signal for displaying an illustration of a crane, an illustration of a plurality of hoisting drums mounted on the crane, and an illustration showing a hanging tool together with work information;
A monitor device that displays the illustrations and the work information on the same screen based on the image signal,
Setting means for setting the correspondence between the hanging tool and the plurality of hoisting drums,
The image signal generating unit may display the plurality of hoist drums and, based on the setting of the setting unit, display the hoist drum corresponding to the hanging tool in a more emphasized manner than other hoist drums. A display device for a crane, wherein the display device generates the image signal. The display device for a crane according to claim 1,
A selection means for selecting any of a plurality of hanging tools provided on the crane,
The image signal generating means may generate an image signal based on the setting of the setting means so that a hoisting drum corresponding to the hanging tool selected by the selecting means is displayed with being emphasized more than other drums. Crane display device. The display device for a crane according to claim 1 or 2,
Drum detection means for detecting the operation of the hoist drum,
The image signal generating means may generate an image signal such that when the operation of the hoisting drum corresponding to the hanging tool is detected by the drum detecting means, the illustration of the hoisting drum has a moving display. A display device for a crane, characterized in that: The display device for a crane according to claim 3,
The image signal generating means generates an image signal such that when the operation of the hoisting drum corresponding to the hanging member is detected by the drum detecting means, the illustration of the hoisting drum is rotated and displayed. A display device for a crane, comprising: The display device for a crane according to claim 2,
An erroneous setting detection unit that detects an erroneous setting of the correspondence between the plurality of hanging tools and the plurality of drums,
The crane display device, wherein the image signal generating means generates an image signal for notifying the erroneous setting when the erroneous setting is detected by the erroneous setting detecting means. The display device for a crane according to claim 5,
The erroneous setting detecting means has a suspended load detecting means for detecting an operation of the suspended load. A crane display device for detecting a setting. The display device for a crane according to claim 6,
The image signal generating means, when the operation of the hanging load other than the hanging equipment selected by the selection means by the hanging load detection means, the detected hanging equipment from the hanging equipment selected by the selection means A display device for a crane, wherein the display device generates an image signal that displays the image signal in an emphasized manner. A display device for a crane according to any one of claims 1 to 7,
A safety device for a crane, comprising: a drum stopping means for stopping the hoist drum when an erroneous setting is detected by the erroneous setting detecting means.

Images