JP2002265188A - Operation amount limiting device for working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem wherein an operation state of each part of a crane (working machine) is displayed as an operation amount display of each part on a plurality of operation amount displays by a controller 16A by arranging the operation amount displays at portions corresponding to illustration image displays and is displayed as each of operation amount limit displays 19A, 19B, 19C and 19E when operation amount limit values are set/released by signals from an operation amount limit setting/releasing means, but an operation amount limit display is erroneously set as an object operation amount limit display by mistake because a plurality of operation amount limit displays exist. SOLUTION: This operation amount limiting device C for the working machine is characterized by providing the operation amount limit setting/releasing means with an operation amount limit selection switch 14B for selecting the object operation amount limit display from the plurality of operation amount limit displays and a fix switch 14C for fixing the setting of the operation amount limit or releasing of the setting and providing a controller 16A with a function for flickering and displaying the operation amount limit display selected by receiving a signal from the operation amount limit selection switch 14B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation limiting device for a working machine.

[0002]

2. Description of the Related Art A crane truck A will be described below as an example of this type of working machine. As shown in FIG. 13, a crane truck A generally has a swivel base 2 arranged on a vehicle 1 so as to be capable of horizontal swiveling drive, and a telescopic boom 3 arranged on the swivel base 2 so as to be able to move up and down. The telescopic boom 3 has a base boom 3a and an intermediate boom 3b.
The front boom 3c is sequentially and elastically fitted into the intermediate boom 3b, and an appropriate expansion / contraction driving means is provided between the respective booms. An undulating hydraulic cylinder 4 is disposed between the base boom 3a and the swivel 2 at a suitable position, so that the telescopic boom 3 can be driven up and down. The jib 5 is configured to be attachable to a distal end portion of the telescopic boom 3. The jib 5 includes a base bracket 5 a,
It is composed of a base jib 5b and a tip jib 5c. The base bracket 5a is a bracket having a triangular shape when viewed from the side. The base end is detachably attached to the distal end of the telescopic boom 3 via the connecting pins 7a and 7b, and the distal end is connected to the base end of the base jib 5b. The base jib 5b is arranged so as to be able to move up and down by pivotally supporting the lower part. A hydraulic cylinder 6 for raising and lowering the jib is arranged between the upper part on the base end side of the base bracket 5a and the upper part on the base end side of the base jib 5b. The leading jib 5c is inserted into the base jib 5b so as to be extendable and contractible, and an appropriate expansion / contraction driving means (an expansion / contraction hydraulic cylinder is arranged but not shown) is arranged between the base jib 5b and the leading jib 5c. ing.

[0003] From the distal end of the jib 5, a sub-wire rope 9 from a sub-winch 8 arranged on the proximal end side of the telescopic boom 3 is provided.
The subhook 10 is suspended from the distal end of the jib 5 by passing the distal end of the telescopic boom, and a suspended load is suspended on the subhook 10. When working with the telescopic boom 3 while storing the jib 5, the main wire rope 12 from the main winch 11 is passed over the distal end of the telescopic boom, and the main hook 13 is suspended from the distal end of the telescopic boom. The suspension is carried out by suspending the load.

When the crane truck A is used for crane work, the telescopic boom 3 is appropriately expanded, lowered, raised, and turned to move the suspended load to a target position, and the jib 5 is appropriately expanded, lowered, and raised and driven. , Each winch 8,11
Is driven to perform the work. Each hydraulic actuator for driving the telescopic boom 3 and the jib 5 is provided with an engine for traveling and moving the crane truck A or a dedicated engine for the swivel 2 and a hydraulic pressure obtained by driving a hydraulic pump with these engines. It is made to operate by.

[0005] Such a mobile crane A is provided with an operation amount restricting device B for restricting the operation amount of the mobile crane A by driving each unit. That is, the operation amount limiting device B is the same as that shown in FIG.
As shown in FIG. 4, setting means 14, operating state detecting means 15, controller 16, display means 17, alarm means 2
1. It has a regulating means 22.

The setting means 14 includes a boom state setting switch 14a, a working radius limit setting switch 14b, a boom height limit setting switch 14c, a boom upper angle limit setting switch 14d, and a boom lower angle limit setting switch 14e.

The boom state setting switch 14a stores the jib 5 when working with the crane truck A and suspends the load on the main hook 13 suspended from the tip of the telescopic boom 3 to perform crane work (described below). In the description, the operation in this case will be described as a boom operation.) And a case in which the jib 5 is attached to the distal end of the telescopic boom 3 and the load is hung on the sub-hook 10 suspended from the distal end of the jib 5 to perform the crane operation. (In the following description, the operation in this case will be described as a jib operation.) The setting signal is input to the controller 16 with a switch for manual setting.

Each of the working radius limit setting switch 14b, the boom height limit setting switch 14c, the boom upper angle limit setting switch 14d, and the boom lower angle limit setting switch 14e is such that the telescopic boom 3 is located at the operation amount limiting position. This switch is used to set the state (each operation amount) of the telescopic boom 3 when pressed by pressing the switch as each operation amount limit value, and to cancel the setting by pressing this switch again.

The operating state detecting means 15 includes a boom length detector 15a for detecting the boom length of the telescopic boom 3 of the crane truck A, a boom undulation angle detector 15b for detecting the boom undulation angle of the telescopic boom 3, and a jib 5. , A jib length detector 15c for detecting the length of the jib 5, a jib up / down angle detector 15d for detecting the up / down angle of the jib 5, and a load cell or an up / down load cell in which the load acting on the telescopic boom 3 is disposed on the rod of the hydraulic cylinder 4 A load detector 15e for detecting a holding pressure held by the hydraulic cylinder 4 with a pressure detector.

The controller 16 receives signals from the setting means 14 and the work state detection means 15 and outputs a display signal for displaying the operation amount of the operation state of the crane A on the display means 17 described below. It has a function of setting an operation amount limit value and outputting an alarm or a signal for restricting the operation of the crane when the crane reaches the operation amount limit value.

That is, the controller 16 includes an operating state calculating section 16a, a working radius calculating section 16b, a boom height calculating section 16c, a rated load calculating section 16d, and an actual load calculating section 1.
6e, moment calculation unit 16f, illustration image display control unit 16g, operation amount limit value setting / cancellation unit 16h, work radius limit determination unit 16i, boom height limit determination unit 16j, boom upper angle limit determination unit 16k, boom lower limit angle Restriction determination unit 1
6l and functions as follows.

The operating state calculating section 16a calculates the boom length, the boom length based on the detection values from the boom length detector 15a, the boom angle detector 15b, the jib length detector 15c, and the jib angle detector 15d. Each operation amount signal (display signal) for displaying the operation amount of the hoisting angle, the jib length, and the jib hoisting angle is output to the display means 17.

When the signal from the boom state setting switch 14a indicates a boom operation, the work radius calculation unit 16b provides a boom length detector 15a and a boom undulation angle detector 15.
The work radius of the telescopic boom 3 is calculated based on the signal from b, and the calculation result is output to the display means 17. If the signal from the boom state setting switch 14a is a jib operation,
Boom length detector 15a, boom undulation angle detector 15b,
Based on signals from the jib length detector 15c and the jib undulation angle detector 15d, the working radius of the telescopic boom 3 and the jib 5 is calculated, and the result of adding the respective working radii is displayed on the display means 1.
7 is output.

The boom height calculating section 16c includes a setting section 14
When the boom state setting switch 14a is set to the boom operation, a signal is received from the boom length detector 15a and the boom up / down angle detector 15b of the operating state detecting means 15, and the height from the ground to the boom tip is received. Is calculated. When the boom state setting switch 14a of the setting means 14 is set to the jib operation, the operation state detecting means 15
Boom length detector 15a, boom undulation angle detector 15
b, receive signals from the jib length detector 15c and the jib undulation angle detector 15d, and calculate the height from the ground to the jib tip.

The rated load calculating section 16d calculates a boom rated load at the time of the boom operation when the signal from the boom state setting switch 14a indicates the boom operation. The load is calculated. The rated load of the boom is determined in advance by storing the rated load in the state of the telescopic boom 3 determined by the length of the telescopic boom 3 and the elevation angle, and detected by signals from the boom length detector 15a and the boom elevation angle detector 15b. The boom rated load at that time is calculated from the stored boom rated load, and the calculation result is output to the display means 17. In the case of the jib operation, the jib rated load in the state of the telescopic boom 3 and the jib 5 determined by the length and the undulation angle of the telescopic boom 3 and the length and the undulation angle of the jib 5 is stored in advance, and the boom length is stored. Detector 15a, boom up / down angle detector 15b, jib length detector 15c, jib up / down angle detector 15
The jib rated load at the time of detection is calculated from the stored jib rated load based on the signal from d, and the calculation result is output to the display means 17.

When the signal from the boom state setting switch 14a indicates a boom operation, the actual load calculating section 16e provides a boom length detector 15a and a boom undulation angle detector 15a.
b. The actual load of the suspended load suspended on the main hook 13 is calculated based on a signal from the load detection means 15g, and the calculation result is output to the display means 17. When the signal from the boom state setting switch 14a indicates a jib operation, the boom length detector 15a, the boom undulation angle detector 15b, and the jib length detector 1
5c, the actual load of the suspended load suspended on the sub hook 10 is calculated based on signals from the jib undulation angle detector 15d and the load detection means 15g, and the calculation result is output to the display means 17.

The moment calculating section 16f calculates a moment value from the working radius calculated by the working radius calculating section 16b and the actual load calculated by the actual load calculating section 16e, and outputs the calculation result to the display means 17. In this case, a moment value is calculated for each of the boom operation and the jib operation based on a signal from the boom state setting switch 14a.

The illustration image display control section 16g stores in advance images for displaying a basic illustration image of the crane truck A, an illustration image of the hook, an illustration image of the hanging tool, etc. on the display means 17, and the display means 17g. The display signal is output to

The actuation amount limit value setting / releasing unit 16h, when receiving a signal from each of the limit setting switches 14b to 14e, relates to the operation amount of the telescopic boom 3 and the jib 5, and calculates each of the calculation units 1h.
The calculated values calculated in 6a to 16c are set and stored as operation amount limit values. And again, each limit setting switch 14b ~
The operation amount limit value set and stored when the signal is received from 14e is released (erased). (For example, when the work radius limit setting switch 14b is pressed, the work radius value calculated by the work radius calculation unit 16b is set and stored as the work radius limit value, and is stored when the work radius limit setting switch 14b is pressed again. In this case, the working radius limit value is released, and the working radius limit value is stored for each of the boom operation and the jib operation according to a signal from the boom state setting switch 14a. When the button is pressed, the boom angle calculated by the work state calculation unit 16a is set and stored as the boom upper limit angle limit value. When the boom upper limit limit setting switch 14d is pressed again, the boom upper limit limit value is released. The work radius limit determining unit 16i compares the work radius calculated by the work radius calculation unit 16b with the stored work radius limit value, and performs the work related to the calculation. It is determined whether or not the radius has reached the work radius limit value, and when it is reached, a signal is output to the alarm means 21 and the restriction means 22 to issue an alarm and output a signal for restricting the operation of the telescopic boom 3 to the dangerous side. . In this case, it is determined whether or not the working radius limit value has been reached for the boom operation and the jib operation based on a signal from the boom state setting switch 14a.

The boom height limit determining unit 16j compares the boom height calculated by the boom height calculation unit 16c with the boom height limit value stored by the operation amount limit value setting / cancellation unit 16h, and calculates the boom height limit value. It is determined whether or not the boom height has reached the boom height limit value. When the boom height reaches the limit value, a signal is output to the alarm means 21 and the restriction means 22 to issue an alarm and restrict the operation of the telescopic boom 3 to the dangerous side. Output a signal. In this case, it is determined whether or not the boom height limit value has been reached at the time of the boom operation and at the time of the jib operation based on a signal from the boom state setting switch 14a.

The boom upper limit angle control discriminator 16k compares the boom upper and lower angle detected by the boom angle detector 15b and calculated by the operating state calculator 16a with the set and stored boom upper limit angle. It is determined whether or not the boom up / down angle has reached the boom upper limit angle. When the angle reaches the boom upper limit angle, a signal is output to the alarm means 21 and the restriction means 22 to issue an alarm and restrict the operation of the telescopic boom 3 to the dangerous side. It is. In this case, it is determined whether or not the boom upper limit angle has been reached at the time of the boom operation and at the time of the jib operation, based on a signal from the boom state setting switch 14a.

The boom lower limit angle control discriminator 161 compares the boom lower limit angle detected by the boom upper and lower angle detector 15b and calculated by the operating state calculator 16a with the set and stored lower limit angle of the boom. It is determined whether the boom up / down angle has reached the lower limit angle of the boom. When the angle reaches the lower limit angle, a signal is output to the alarm means 21 and the restriction means 22 to issue an alarm and a signal for restricting the operation of the telescopic boom 3 to the dangerous side. Output.
In this case, it is determined whether or not the boom lower limit angle has been reached at the time of the boom operation and at the time of the jib operation based on a signal from the boom state setting switch 14a.

As shown in FIGS. 14 and 15, the display means 17 is composed of a liquid crystal display or a CRT display, and has an illustration image display section 18 for displaying an illustration image of the crane, and an illustration image display of the operating state of each section of the crane. Actuation amount display section 19 for displaying a plurality of items at corresponding locations of
And an operation display unit 20.

The illustration image display unit 18 receives a display signal from the illustration image display control unit 16g of the controller 16, and receives a basic illustration image 18a of the crane, an illustration image 18b of the hook, and an illustration image of the hanger as shown in FIG. The illustration image 18c is displayed.

The operation amount display section 19 has a boom length display 19.
a, boom up / down angle display 19b, jib length display 19c, jib up / down angle display 19d, work radius display 19e, boom height display 19f, actual load display 19g, rated load display 19
h, moment display 19i, and moment display 1
Those other than 9i are displayed at corresponding locations on the illustration image display unit, receive the display signals from the calculation units 16a to 16f of the controller 16, display the operation amounts of the operation states of the respective units in numerical values, and display units (for example, lengths). M if there is an angle, ° if an angle, t if a load, etc.).

The operation amount display section 19 includes a boom length display 19a, a boom undulation angle display 19b, and a jib length display 19.
When the c, the jib undulation angle display 19d, the work radius display 19e, and the boom height display 19f are displayed, the operation range related to the display is displayed as an arrow in the illustration image as shown in FIG. .

The working radius display 19e, the boom height display 19f, the actual load display 19g, and the rated load display 19
h, moment display 19i displays the working radius, boom height, actual load, rated load, and moment of the boom operation during the boom operation, and displays the working radius, the boom height, the actual load, and the jib operation during the jib operation. The rated load and moment are displayed. That is,
Each of the calculation units 16b to 16f calculated by the controller 16
Are output to the respective displays 19e to 19h so that the displayed contents are changed at the time of the boom work or the jib work set based on the setting signal from the boom state setting switch 14a. Each of the calculation units 16b to 16f is provided with a display change unit.

The moment display 19i is displayed on the controller 1
6 is indicated by a bar meter based on the moment value calculated by the moment calculating unit 16f. A section where the moment value is less than 90% is green, a section from 90% to 100% is yellow, and 100% or more. Is displayed in red, and the moment value is displayed at the left end of the bar meter in terms of quantity. For example, as shown in FIG.
In the case of 00%, up to 90% green and 90% to 100%
The section is displayed with a yellow bar meter in the section up to%, and the numerical value of 100 and the unit of% are displayed at the left end of the bar meter.

The operation display section 20 includes a boom height limit indicator light 20a, a work radius limit indicator light 20b, a boom upper angle limit indicator light 20c, and a boom lower angle limit indicator light 20d, and functions as follows. .

The boom height limit indicator lamp 20a is lit when the boom height limit setting switch 14c is pressed and the boom height limit value is set and stored in the operation amount limit value setting / cancellation section 16h, and is set and stored. It is an indicator light (LED) that turns off when not in operation and blinks when it reaches a set boom height limit value in response to a signal from the boom height limit determination unit 16j. (In this case, the display is made when the signal is set by the signal from the boom state setting switch 14a. That is, the display is made during the boom operation during the boom operation, and is displayed during the jib operation. Similarly, the work radius limit indicator light 20b pushes the work radius limit setting switch 14b to set the operation amount limit value setting / releasing unit 16.
The display turns on when the work radius limit value is set and stored in h, turns off when the work radius limit value is not set and stored, and blinks when the set work radius limit value is reached upon receiving a signal from the work radius limit determination unit 16i. It is a light (LED). (In this case, the display is made when the signal is set by the signal from the boom state setting switch 14a. That is, the display is made during the boom operation during the boom operation, and is displayed during the jib operation. The boom upper limit angle limit indicator light 20c pushes the boom upper angle limit setting switch 14d, and the actuation amount limit value setting / release unit 16 is pressed.
Lights up when the boom upper limit angle value is set / stored in h, turns off when it is not set / stored, and blinks when it reaches the set boom upper limit angle value in response to a signal from the boom upper limit limit determining unit 16k. An indicator light (LED). (In this case, the display is made when the signal is set by the signal from the boom state setting switch 14a. That is, the display is made during the boom operation during the boom operation, and is displayed during the jib operation. The boom lower limit angle limit indicator light 20d pushes the boom lower limit limit setting switch 14e, and the actuation amount limit value setting / releasing unit 16 is pressed.
Lights when the boom lower limit angle is set and stored in h
It is an indicator light (LED) that turns off when it is not set and stored, and that blinks when it reaches the set boom lower limit angle value in response to a signal from the boom lower limit limit determining unit 16l. (In this case, the display is made when the signal is set by the signal from the boom state setting switch 14a. That is, the display is made during the boom operation during the boom operation, and is displayed during the jib operation. The alarm means 21 outputs an alarm output from the controller 16 when the moment value becomes 90% or more, or when each of the limit determining sections 16i to 16l determines that the limit value has been reached. Upon receiving the signal, an alarm is issued by an alarm.

The regulating means 22 has a moment value of 100%
In this case, or when each of the limit determining units 16i to 16l determines that the limit value has been reached, the control signal is output from the controller 16 and the operation of each drive of the crane in the dangerous direction is restricted ( Stop).

The operation amount limiting device B configured as described above is
The operation amount limiting position is set as follows. That is, when setting the boom height limit during the boom operation (the boom state setting switch 14a is set to the boom operation), the distal end of the telescopic boom 3 is located at the height position where the height is limited, and the boom height display 19f is displayed. Displays the boom height value calculated by the boom height calculator 16c.
In this state, press the boom height limit setting switch 14c,
The boom height displayed on the boom height display 19f is stored in the operation amount limit value setting / cancellation unit 16h. At this time, the boom height limit display lamp 20a is lit to indicate that the boom height limit is set. To release the boom height restriction, press the boom height restriction setting switch 14c again to erase the boom height stored in the work restriction position setting section 16h and turn off the boom height restriction indicator lamp 20a.

When setting the boom height limit at the time of the jib work (setting the boom state setting switch 14a to the jib work), the tip of the jib 5 is positioned at the height limit position, and the boom height display 19f is displayed. Boom height calculator 16c
Display the jib height value calculated in. In this state, press the boom height limit setting switch 14c to display the boom height display 1
The jib height displayed at 9f is stored in the operation amount limit value setting / cancelling section 16h. At this time, the boom height limit display lamp 20a is turned on to indicate that the jib height limit is set. In the case of canceling, the boom height limit setting switch 14c may be pressed again.

When setting the work radius limit during the boom work (setting the boom state setting switch 14a to the boom work), the telescopic boom 3 is positioned at the work radius position where the work radius is limited, and the work radius display 19e is displayed on the work radius display 19e. The work radius value calculated by the calculation unit 16b is displayed. In this state, the work radius limit setting switch 14b is pressed, and the work radius displayed on the work radius display 19e is set to the operation amount limit value setting /
It is stored in the release unit 16h. At this time, the work radius limit indicator lamp 20b lights up to indicate that the work radius limit is set. When canceling, the work radius limit setting switch 14b may be pressed again.

When setting the work radius limit during the jib work (setting the boom state setting switch 14a to the jib work), the jib 5 is positioned at the work radius position where the work radius is limited, and the work radius is displayed on the work radius display 19e. The work radius value calculated by the unit 16b is displayed. In this state, the work radius limit setting switch 14b is pressed, and the work radius displayed on the work radius display 19e is changed to the operation amount limit value setting / release unit 16
h. At this time, the work radius limit indicator lamp 20b lights up to indicate that the work radius limit is set. When canceling, similarly, the working radius limit setting switch 14b is again set.
You just have to press.

When setting the boom upper limit angle, the telescopic boom 3 is raised and lowered to the position where the boom upper limit angle is limited,
The boom hoist angle value calculated by the work state calculator 16a is displayed on the boom hoist angle display 19b. In this state, the boom upper limit limit setting switch 14d is pressed, and the boom angle displayed on the boom angle display 19b is stored in the operation amount limit value setting / cancelling section 16h. At this time, the boom upper limit angle limit indicator lamp 20c is lit to indicate that the boom upper limit angle limit is set. When canceling, the boom upper limit limit setting switch may be pressed again.

When setting the lower limit of the boom lower limit angle, the telescopic boom 3 is raised and lowered to the position for limiting the lower limit angle of the boom.
The boom hoist angle value calculated by the work state calculator 16a is displayed on the boom hoist angle display 19b. In this state, the boom lower limit angle limit setting switch 14e is pressed, and the boom raise / lower angle displayed on the boom raise / lower angle display 19b is stored in the operation amount limit value setting / releasing unit 16h. At this time, the boom lower limit angle limit display lamp 20d is lit to indicate that the boom lower limit angle limit is set. In the case of releasing, the boom lower limit limit setting switch 14e may be pressed again.

The limit values thus set are compared with the limit values stored in the limit determining units 16i to 16l and the calculated values in the calculation units 16a to 16c during the crane operation. When the calculated value reaches the limit value, the limit indicator lights 20a to 20d related to the limit reached blink, the alarm means 21 gives an alarm, and the restricting means 22 restricts (stops) the dangerous side operation of the crane.

[0039]

By the way, when setting the respective operation amount limiting positions as described above, the display means 1 is used.
7, a plurality of operation amount displays 19a to 19a.
9h, the operation amount display 1 related to the operation amount restriction
9b, 19e, and 19f, there is a possibility that the target restriction display is erroneously set by mistake.

An object of the present invention is to provide an operation amount limiting device for a working machine which solves such a problem.

[0041]

According to a first aspect of the present invention, there is provided an operation amount limiting device for a working machine according to the first aspect of the present invention. Display means comprising an operation amount display section comprising a plurality of operation amount displays for displaying the operation amounts of each part of the work machine; operation state detection means for detecting the operation state of each part of the work machine; An operation amount limit setting / releasing means for setting or canceling the limit value, an alarm means or an operation restricting means for the work implement, and an operation amount display section for each part of the work implement based on a signal detected by the operation state detecting means. The operation state is displayed as an operation amount display, and the operation amount limit value set by the operation amount limit setting / releasing means is displayed as an operation amount restriction display, and when the detected operation amount reaches the set operation amount limit value, Police An actuation amount limiting device for a working machine having a controller that outputs a signal to a means or a regulating means, the actuation amount limitation display for the purpose of setting or canceling the actuation amount limit value from a plurality of actuation amount displays. The operation amount limit setting switch for selecting the operation amount limit selection switch and the setting switch for setting or canceling the setting of the operation amount limit
The controller is provided with a display function which is provided in the releasing means and receives a signal from the operation amount restriction selection switch and blinks the selected operation amount restriction display.

According to a second aspect of the present invention, in the working amount limiting device for a working machine according to the first aspect, the controller does not cause the controller to display the operating amount or the operating amount limit value in the unselected operating amount limit display. In addition, the display function is provided.

According to a third aspect of the present invention, there is provided an operating amount limiting device for a working machine, comprising a plurality of operating amounts for displaying the working amounts of the respective parts of the working machine at a plurality of positions corresponding to the illustration image display section and the illustration image display of the working machine. Display means having an operation amount display section comprising a display; operation state detection means for detecting the operation state of each part of the work implement; and operation amount restriction setting / setting for setting or canceling the operation amount limit value of each part of the work implement. Release means, alarm means or operation restricting means of the working machine, and the operating amount display section displays the operating state of each part of the working machine as an operating amount display based on a signal detected by the operating state detecting means and sets an operating amount limit. A controller for displaying the operation amount limit value set by the release means as an operation amount restriction display, and outputting a signal to the alarm means or the restriction means when the detected operation amount reaches the set operation limit value. The working amount limiting device for a working machine having a working amount limiting setting switch for selecting an operating amount limiting display for setting an operating amount limiting value from a plurality of operating amount displays. In response to a signal from the operation amount limit selection switch, the operation amount or the operation amount limit value is displayed on the selected operation amount limit display, and the operation amount or the operation amount limit value is displayed on the unselected operation amount limit display. The controller is provided with a display function for preventing display.

According to a fourth aspect of the present invention, there is provided a working amount limiting device for a working machine according to the first or second aspect, wherein the blinking of the operating amount limitation display is stopped when a signal from the confirmation switch is received. A function is provided in the controller.

According to a fifth aspect of the present invention, in the working amount limiting device for a work machine according to the third aspect, the controller has a display function of blinking the operating amount limitation display when receiving a signal from the confirmation switch. It is characterized by having.

According to a sixth aspect of the present invention, there is provided an operating amount limiting device for a working machine according to any one of the first to fifth aspects, wherein the working machine is mounted on a vehicle so as to be capable of extending and retracting at the tip of a boom that can be raised and lowered. The present invention is characterized in that it is constituted by a crane truck capable of mounting a jib, and the illustration image is constituted by an illustration image of a crane.

According to a seventh aspect of the present invention, in the working amount limiting device for a working machine according to the sixth aspect, the working radius display and the boom height can be displayed on the operating amount display, and the setting or setting of these operating amount limits can be performed. The controller is provided with a function of performing a release display.

[0048]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a working machine operation amount limiting device C according to the present invention will be described below. In describing an embodiment of an operation amount limiting device C of a working machine, an embodiment in which the embodiment is applied to a crane A described in the related art will be described with reference to FIGS.
This will be described below with reference to FIG. In describing an operation amount limiting device C for a working machine according to the present invention, reference numerals 1 to 13, reference numeral 18, reference numeral 2 used in the description of the related art.
1, reference numeral 22, reference numerals 15a to 15e, reference numeral 14a, reference numerals 16a to 16g, reference numerals 18a to 18c, reference numeral 19d, reference numerals 19g to 19i, and reference numerals 20a to 20d are the same as those described in the related art, and are therefore detailed. The detailed description is omitted, and the same reference numerals are used in the following description.

1. Configuration of working amount limiting device C 1-1. Operating state detecting means 15A In FIG. 1, reference numeral 15A denotes an operating state detecting means. Has been added. The sub rope feeding amount detector 15F is a detector that detects the feeding amount of the sub wire rope 9 fed from the sub winch 8 by detecting the rotation of the sub winch 8, and the like. The main rope feeding amount detector 15G is a detector that detects the feeding amount of the main wire rope 12 fed from the main winch 11 by detecting the rotation of the main winch 11, and the like. Engine rotation detector 15
H is a detector that detects the rotation of the engine that drives the hydraulic pump.

1-2. The setting means 14A is a setting means, and in addition to the boom state setting switch 14a described in the related art, an operation amount limit selection switch 14B, a decision switch 14C, a basic display switch 14D, a wire number setting switch 14E, Adjustment switch 14F, hook movement amount switch 14G, reset switch 14H, main / sub hook changeover switch 14I, alarm replay switch 14J, hour meter switch 14
K, an inspection switch 14L, and a scroll switch 14M are additionally provided.

The operation amount restriction selection switch 14B is a switch for selecting various operation amount restrictions (work radius restriction, boom height restriction, boom upper angle restriction, boom lower angle restriction) for restricting the operation amount of the telescopic boom described later. By repeatedly pressing the switch, various operation amount limits can be sequentially selected (boom height limit, boom upper limit angle limit, boom lower limit angle limit, work radius limit).

The confirmation switch 14C is a switch for confirming a set value (limit value or input value). For example, when setting the operation amount limit value, the operation amount limit switch 14B
To select the target operation amount limit, and move the telescopic boom 3 to a position where the target operation amount limit value is reached.
By pressing the button 4C, the position of the telescopic boom 3 at that time is used as a switch for confirming the setting as a target operation amount limit value or for confirming the release of the setting. The confirmation switch 14C is also used when setting the number of wires to be described later. The operation amount limit selection switch 14B and the confirmation switch 14C are provided in the first, third, fourth, and fourth embodiments.
An operation amount limitation setting / releasing means according to a fifth aspect is provided.

The basic display switch 14D is a switch for displaying a standard display on a display means 17A described later. For example, there is a display device in which a plurality of types of display are set to a common display so that a single display can be performed, and the display is switched to display a target display. However, a standard display which is set in advance by pressing a basic display switch 14D is provided. It is used when displaying. When the basic display switch 14D is pressed, a plurality of types of displays are displayed, and each display displays a preset standard display. This function will be described in detail with reference to a standard display command unit 16R provided in the controller 16A described later.

The wire number setting switch 14E is a switch that is manually set when setting the number of the main wire ropes 12 to be hung between the main hook 13 and the distal end of the telescopic boom 3.

The adjustment switch 14F is a switch used for directly setting and inputting a numerical value. The numerical value increases by pressing a + switch, and decreases by pressing a-switch. For example, when setting the number of wires, the adjustment switch 14F and the confirmation switch 14C are pressed when the adjustment switch 14F is depressed by the + switch and the-switch to reach the desired value.
Is used as a switch for setting and confirming the target number by pressing.

The hook movement amount switch 14G is a switch which is manually set when the hook movement amount of the main hook 13 or the sub hook 10 is displayed on a display means described below.

The reset switch 14H is a switch for setting a hook position serving as a starting point when the amount of movement of the main hook 13 or the sub hook 10 is displayed.

Main / sub hook switch 14I
When displaying the amount of hook movement on the display means,
A changeover switch for selecting and displaying whether to display the hook movement amount of the main hook 13 or the hook movement amount of the sub hook 10.

The alarm replay switch 14J can be re-alarmed by pressing the alarm replay switch if the alarm is a predetermined time ago. This alarm replay function will be described in detail in the alarm output control / storage unit 160 provided in the controller 16A described later.

The hour meter switch 14K is a switch which is pressed when the use time of the engine for driving the hydraulic pump is desired to be integratedly displayed on the display means (character display 19J described later).
This switch is used to determine the engine maintenance timing.

The inspection switch 14L is connected to each of the detectors 15a to 15a.
Each signal value (input / output value of the board unit, etc.) in the course of being displayed on the display means based on the detection signals from 15e, 15F to 15H is displayed on the display means. This switch is used for checking, and is used to quickly detect a malfunctioning part of the detector.

The scroll switch 14M is a switch used for scrolling when a character display 19J described later cannot be displayed at one time.

Each switch 14 of the setting means 14A
a, 14B to 14M are arranged on the panel surface of the operation amount limiting device C.

1-3. The controller 16A is a controller, and is common to the controller described in the related art in that each of the controllers 16A to 16F and the illustration image display control unit 16g is provided. Section 16H, working radius limit determining section 16I, boom height limiting determining section 16J, boom upper angle limiting determining section 16K, boom lower angle limiting determining section 16L,
It comprises a main hook movement amount calculation unit 16M, a sub hook movement amount calculation unit 16N, an alarm output control / storage unit 160, an engine rotation integration unit 16P, an inspection detector related display calculation unit 16Q, a standard display command unit 16R, and a backup command unit 16S. Is different.

The operation amount limit value setting / releasing section 16H includes various operation amount limit values (boom height limit value, boom upper limit angle limit value, boom lower limit angle) set by the operation amount limit selection switch 14B and the decision switch 14C. Limit value, work radius limit value, and the like) are set and stored, and the setting is displayed in various operation amount limit displays, and the display signal is displayed in each of the limit indicator lights described below. Output. (In this case, the operation amount limit value is displayed for each of the boom operation and the jib operation set by the signal from the boom state setting switch 14a.) For example, when the operation radius is limited, the operation is performed. Pressing the amount limit selection switch 14B to set the working radius limit, and setting the main hook 13 or the sub hook 10 suspended from the tip of the telescopic boom 3 or the jib 5 to the working radius where the working radius is limited, the determination switch. By pressing 14C, the target work radius limit value is stored, the work radius limit value is displayed on the work radius limit display 19E, and a display signal is output to the work radius limit display lamp 20b.

Thereafter, the stored work radius limit value is used as a work radius limit value as a limit value during crane work. To release, the operation amount limit selection switch 14
After pressing B to select the working radius limit, confirm switch 1
It can be released by pressing 4C. That is, the operation radius limit is selected by the operation amount limit selection switch 14B and set by pressing the confirmation switch 14C. The operation radius restriction is selected again by the operation amount restriction selection switch 14B, and the confirmation switch 1 is set.
The setting and the release are alternately repeated so as to be released by pressing 4C. When another operation amount restriction is performed, the operation amount restriction selection switch 14B is repeatedly pressed to select a target operation amount restriction, and the setting and release are similarly performed.

The work radius limit discriminator 16I sets the work radius calculated by the work radius calculator 16b and the working amount limit value.
The work radius limit value stored in the release unit 16H is compared with the work radius limit value to determine whether or not the calculated work radius has reached the work radius limit value.
b, and outputs a signal to the warning means 21 and the regulating means 22 to issue a warning, and the telescopic boom 3 to the danger side.
Is regulated. In this case, it is determined whether or not the working radius limit value has been reached for the boom operation and the jib operation based on a signal from the boom state setting switch 14a.

The boom height limit determination unit 16J compares the boom height calculated by the boom height calculation unit 16c with the boom height limit value stored by the operation amount limit value setting / cancellation unit 16H, and performs the calculation. It is determined whether or not the boom height has reached the boom height limit value. When the boom height reaches the boom height limit value, a signal is output to a boom height limit indicator light 20a described below, and a signal is output to the alarm means 21 and the restriction means 22. A warning is issued and the operation of the telescopic boom 3 to the dangerous side is regulated. In this case, it is determined whether or not the boom height limit value has been reached at the time of the boom operation and at the time of the jib operation based on a signal from the boom state setting switch 14a.

The boom upper limit restriction judging section 16K compares the boom up / down angle calculated by the operation state calculator 16a with the boom upper limit angle stored by the operation amount limit setting / cancelling section 16H. It is determined whether or not the boom up / down angle has reached the boom upper limit angle limit value, and when it reaches, a signal is output to a boom upper limit angle limit indicator light 20c described below, and a signal is output to the alarm means 21 and the restriction means 22. A warning is issued and the operation of the telescopic boom 3 to the dangerous side is regulated. In this case, it is determined whether or not the boom upper limit angle limit value has been reached at the time of the boom operation and at the time of the jib operation based on a signal from the boom state setting switch 14a.

The boom lower limit angle limit discriminator 16L compares the boom lowering / lowering angle calculated by the operation state calculator 16a with the boom lower limit angle limit stored in the operation amount limit value setting / releasing unit 16H. It is determined whether or not the boom hoisting angle has reached the boom lower limit angle limit value, and when it reaches, a signal is output to a boom lower limit angle restriction indicator light 20d described below, and a signal is output to the alarm means 21 and the restriction means 22. A warning is issued and the operation of the telescopic boom 3 to the dangerous side is regulated. In this case, it is determined whether or not the boom lower limit angle limit value has been reached at the time of the boom operation and at the time of the jib operation based on a signal from the boom state setting switch 14a.

The main hook moving amount calculating section 16M is provided with a main rope feeding amount detector 15 of the operating state detecting means 15A.
G, the number of wires set by the setting means 14A (set by the wire number setting switch 14E, the adjustment switch 14F, and the decision switch 14C, and stores the set number of wires) and the reset switch 14H. Each signal is input, and the time when the reset switch 14H is pressed is stored as a reference. Thereafter, the hook movement amount of the main hook 13 from the stored reference is sequentially calculated as the relative movement amount based on the operation state of the main winch 11.

The sub-hook movement amount calculating unit 16N stores the signals when the signals from the sub-rope feeding amount detector 15F and the reset switch 14H of the operating state detecting means 15A are input and the reset switch 14H is pressed, and thereafter stores the signals. The hook moving amount of the sub hook 10 from the stored reference is sequentially calculated as the relative moving amount based on the operation state of the sub winch 8.

The alarm output control / storage unit 160 outputs an alarm signal to the alarm means 21 based on the signals from the calculation units and the discrimination unit that the operating state of the crane has become dangerous, and issues an alarm. After the alarm is issued, the alarm is stored for a predetermined time, and when the command signal is received from the alarm replay switch 14J, the stored alarm is output to the alarm unit 21. That is, the warning can be confirmed by pressing the warning replay switch 14J when the warning is issued only for an instant or when the background noise is high and the operator may have missed the warning.

Further, the alarm output control / storage section 160 is prepared to output a plurality of types of alarm sounds, and changes the alarm sounds in accordance with situations leading to dangerous work situations to change the alarm sounds.
1 is output. (For example, when the moment value becomes 90%, when the actual load becomes the rated load,
The alarm sounds differently in each case, such as when various work load limits are reached. ) And when it is necessary to issue two or more alarms at the same time, the priority order is determined, and the priority alarm is issued and the non-priority alarm sound is output. However, when the stored alarm sound is output by pressing the alarm replay switch 14J, a non-priority alarm sound is output after a high-priority alarm is output for a certain period of time. Therefore, by pressing the alarm replay switch 14J, even in a dangerous work state in which two or more warnings are issued at the same time, all the dangerous work states to be warned can be confirmed.

The engine rotation integrating section 16P is a calculating section that receives the signal from the engine rotation detector 15H and calculates the engine usage time. (Normally 1600r / min
Since the time when the engine is driven for one hour is used as 1H, the usage time of the engine is calculated by the integrated engine speed / 1600. The inspection detector-related display calculation unit 16Q is configured to check the inspection switch 14
Each of the detectors 15a to 15e and 15F to 1
Each signal value (input / output value of the board unit, that is, a value converted from the A / D converted value to the terminal voltage) in the course of displaying the operation state of each detector on the display means based on the detection signal from 5H. , Physical quantity, A / D conversion value, etc.) and outputs the calculated value to the display means.

The standard display command section 16R is a command section that receives a signal from the basic display switch 14D and issues a command to display a preset standard display. (For example, each display described later is set as follows: a jib length display 19C displays a jib length, a boom length display 19A displays a boom length, and a boom undulation angle display 19B. Displays the boom angle and the work radius display 19E
Is set to display the working radius. Therefore,
Even when each display indicates an operation amount limit value or the like, each display performs a set standard display according to a command from the standard display command unit 16R upon receiving a signal from the basic display switch 14D. Has become. The backup command section 16S is provided with an operating state detecting means 15A.
The correction coefficient of the detection value detected by each of the detectors 15a to 15e and 15F to 15H, the reset position when calculating the main / sub hook movement amount, the set value of each operation amount limit, and the like are temporarily stored in the volatile memory. However, when the capacity of the battery for backing up the volatile memory is reduced, the command unit is configured to store the content stored in the volatile memory in the nonvolatile memory. This backup command section 16
By providing S, when the capacity of the battery for backing up the volatile memory is reduced and the battery is replaced, the work can be continued without adjusting each detector and performing various settings from the beginning. .

1-4. The display unit 17A is a display unit, and the illustration image display unit 18
, An operation amount display section 23, and an operation display section 20A. The illustration image display unit 18 is the same as that described in the related art, and a description thereof will be omitted.

1-4-1. The operation amount display unit 23 includes a boom length display 19A and a boom elevation angle display 19 in which a plurality of operation amounts of the operation state of each part of the crane are displayed at corresponding locations in the illustration image display.
B, jib length display 19C, jib hoist angle display 19d, work radius display 19E, actual load display 19g, rated load display 1
9h, and a moment display 19i and a character display 19J. The jib hoist angle display 19d, the actual load display 19g, the rated load display 19h, and the moment display 19i are the same as those described in the related art, and thus description thereof will be omitted.

The boom length display 19A normally displays the boom length of the telescopic boom 3 in response to a signal from the operating state calculation section 16a (FIG. 7) and displays the boom length along the illustration image of the boom. An illustration of an arrow indicating the boom length is displayed. When the boom height limit is selected by the operation amount limit selection switch 14B, the boom height calculation unit 16c
Is displayed, the display is blinking (FIG. 8), and an illustration of an arrow indicating the boom height is also blinking. When the confirmation switch 14C is pressed, the blinking display of the boom height is stopped, and the boom height at this time is set and stored as a boom height limit value. When the setting is released, the boom height limit is selected again by the operation amount limit selection switch 14B and the boom height limit value is displayed (the boom height limit value is displayed without blinking, and an arrow indicating the boom height is displayed. Is flashed), and when the enter switch 14C is pressed, the setting is released and the memory is deleted. When setting and releasing the boom height limit value, the illustration of the arrow indicating the boom length disappears and the illustration of the arrow indicating the boom height flashes. In either case, the unit of “m” is displayed.
In this way, the boom length display 19A displays a plurality of types of boom lengths and boom height limit values.

The boom up / down angle display 19B normally displays the boom up / down angle of the telescopic boom 3 in response to a signal from the operating state calculation section 16a (FIG. 7).
An arrow illustration showing the boom undulation angle is displayed. When the boom lower limit angle limit is selected by the operation amount limit selection switch 14B, the boom up / down angle calculated by the operating state calculator 16a is displayed, the display blinks (FIG. 10), and the arrow indicating the boom lower limit angle is displayed. The illustration also flashes. When the confirmation switch 14C is pressed, the blinking display of the boom angle is stopped, and the boom angle at this time is set and stored as the boom lower limit angle limit value. When canceling the setting,
The boom lower limit angle limit is selected again by the operation amount limit selection switch 14B, and the boom lower limit angle limit value is displayed (the boom lower limit angle limit value is displayed without flashing, and the arrow indicating the boom lower limit angle flashes), and the confirm switch 14C Press to cancel the setting and delete the memory. When setting and canceling the boom lower limit angle limit value, the illustration of the arrow indicating the elevation angle of the boom disappears and the illustration of the arrow indicating the lower limit angle of the boom blinks. Then, in either case, the unit display of “°” is performed. As described above, the boom angle display 19B
, A plurality of types of display of the boom undulation angle and the boom lower limit value are displayed.

The jib length display 19C normally displays the jib length of the jib 5 in response to a signal from the operating state calculating section 16a (FIG. 7), and displays an arrow indicating the jib length. The illustration is displayed. Also, jib length display 19C
Is displayed by pressing the wire number setting switch 14E, the numerical value of the wire number is displayed, the value is increased each time the + switch of the adjustment switch 14F is pressed, and the value is decreased each time the-switch is pressed. By pressing the confirmation switch 14C when the numerical value corresponding to the number is displayed, the number is set and stored.
In other words, the jib length display 19C is displayed to set the number of wires, in which case a symbol P is displayed before the numerical value, and an illustration of the hook is displayed. At this time, the illustration of the arrow indicating the length of the jib and the unit display of “°” and “m” disappear.

Further, the jib length display 19C displays the hook movement amount when the switch of the hook movement amount switch 14G is pressed. At this time, the main / sub hook switch 14
When the main hook 13 is selected by I, the movement amount of the main hook 13 is displayed in response to the calculation signal from the main hook movement amount calculation unit 16M, and when the sub hook 10 is selected, the calculation from the sub hook movement amount calculation unit 16N is performed. Upon receiving the signal, the movement amount of the sub hook 10 is displayed.

When the reset switch 14H is pressed while the hook movement is being displayed, the hook movement starts at that point.
m ”is displayed. At this time, if the display of the amount of movement of the hook indicates the amount of movement of the main hook 13, the amount of movement of the main hook 13 is reset. The movement amount of 10 is reset. When displaying the hook movement amount, a unit of “m” and an illustration of the hook are displayed. Thereafter, the hook movement amount is calculated by the main hook movement amount calculation unit 16M or the sub hook movement amount calculation unit 16N on the basis of the reset point.

Next, when the jib length display 19C is set to a state in which the boom upper limit is set by the operation amount limit selection switch 14B, the boom up / down angle calculated by the operation state calculator 16a is displayed and the display is displayed. The flashing display also shows the illustration of the arrow indicating the boom upper limit angle. When the confirmation switch 14C is pressed, the blinking display of the boom angle is stopped.
The boom elevation angle at this time is set and stored as a boom upper limit angle limit value. When canceling the setting, the boom upper limit limit is selected again by the operation amount limit selection switch 14B, and the boom upper limit value is displayed (the boom upper limit value is displayed without blinking, and the arrow indicating the jib length is displayed). When the confirmation switch 14C is pressed, the setting is released and the memory is erased. When setting and canceling the boom upper limit angle limit value, the illustration of the arrow indicating the boom up / down angle disappears and the illustration of the arrow indicating the boom upper limit angle flashes. At this time, a symbol of the angle unit “°” and an illustration of an arrow indicating the boom upper limit angle are displayed, and the symbol of the unit “m” and the illustration of the hook disappear. (FIG. 9) As described above, the jib length display 19C shows the jib length, the number of wires, the main
A plurality of types of display of the sub hook movement amount and the boom upper limit angle limit value are performed.

The jib length display 19C does not display the jib length during the boom operation based on the setting signal from the boom state setting switch 14a. That is, the operation state calculation unit 16a includes a display changing unit that does not display the jib length during the boom operation and displays the jib length during the jib operation based on the setting signal from the boom state setting switch 14a. I have. The display change means of the operation state calculation unit 16a displays an illustration display of the jib at the tip of the illustration boom displayed in the basic illustration image 18a of the crane during the jib operation, and displays the illustration display so as not to be displayed during the boom operation. Output a signal. Further, the display change means of the operation state calculation unit 16a outputs a display signal so as not to display the arrow indicating the jib length during the boom operation.

Similarly, the display changing means of the operation state calculation section 16a displays the jib up / down angle on the jib up / down angle display 19d during the jib operation based on the setting signal from the boom state setting switch 14a. A display signal is output so as not to display the jib hoist angle display 19d and the arrow indicating the jib hoist angle.

The work radius display 19E normally displays the work radius (FIG. 7). When the operation radius limit is selected by the operation amount limit selection switch 14B, the operation radius calculated by the operation radius calculation unit 16b is displayed, the display blinks (FIG. 11), and an arrow indicating the operation radius is also displayed. Flashing display. When the decision switch 14C is pressed, the blinking display of the working radius is stopped, and the working radius at this time is set and stored as the working radius limit value. When canceling the setting,
The work radius limit is selected again by the operation amount limit selection switch 14B, and the work radius limit value is displayed (the work radius limit value is displayed without flashing, and the illustration of the arrow indicating the work radius flashes), and the confirm switch 14C is turned on. Press to cancel the setting and erase the memory. When setting and canceling the work radius limit value, the illustration of the arrow indicating the work radius is blinked and displayed, and when the work radius limit value is not set and canceled, the blinking is stopped. In each case, the unit of “m” is displayed. The work radius display 19E displays a plurality of types of work radius and work radius limit value.

The moment display 19i and the character display 19J
Are arranged without corresponding to the illustration image display as shown in FIG. Since the moment display 19i is the same as that described in the related art, a detailed description is omitted.

The character display 19J displays the characters stored in advance and the numbers calculated by the calculation units. The character display 19J is arranged below the moment display 19i and arranged in two lines with the moment display. ing. For example, when the jib length is displayed, “jib length 12.1 m” is displayed, when the hook movement amount is displayed, “hook movement amount 13.5 m” is displayed, and when the hour meter is displayed, “hour meter 12051H” is displayed. Is displayed, and when performing an inspection display, "Boom Up P 1.070V
4.9 MPa 877 "is displayed.

Here, the inspection display will be described. In the inspection display described above, the signal value of each part related to the detector for detecting the holding pressure of the undulating hydraulic cylinder 4 is displayed as the load detector 15e. That is, as for the pressure when raising the boom, 1.070 V is a value obtained by converting the A / D converted value to the terminal voltage, 4.9 MPa is a pressure value, and 877 is an A / D converted value. Each time the check switch 14L is pressed, a signal from the check detector-related display calculation unit 16Q is received and the signal value related to the detector to be checked is changed and displayed.

The character display 19J normally displays each of the above-mentioned indications. However, when an alarm is given by the alarm means 21, the cause of the alarm is given, and when the regulating means 22 is activated, the cause of the regulation is given. Is displayed preferentially with respect to each of the preceding displays, and after a predetermined time, a warning and guidance for operation to avoid the regulation are displayed. When the characters are not displayed at one time in the character display 19J, the characters are sequentially displayed by operating the scroll switch 14M of the setting means 14A.

The character display 19J is the jib length display 1
The image is displayed smaller than that of 9C. Therefore, the jib length display 19C is displayed at a position corresponding to the illustration image and is displayed larger than the character display 19J.
The display has higher visibility than 9J.

1-4-2. Display of hook movement amount Here, the jib length and the hook movement amount can be selected and displayed on the jib length display 19C and the character display 19J.
That is, when the jib length is to be displayed on the jib length display 19C, the basic display switch 14D is pressed, and when the hook travel is to be displayed, the hook travel switch 14G is pressed for selective display. And jib length display 1
When the jib length is displayed on 9C, the hook movement amount is displayed on the character display 19J, and when the hook movement amount is displayed on the jib length display 19C, the jib length is displayed on the character display 19J. ing.

Therefore, the items displayed on the respective displays may be selected and performed according to the working state of the crane. For example, when the jib 5 is operated to expand and contract, the length of the jib 5 is displayed on the jib length display 19C and the character display 1 is displayed.
9J is displayed with the amount of hook movement. In normal crane work, the extension / retraction operation of the jib 5 is performed less frequently than the winch operation.
The amount of hook movement may be displayed on C.

In this way, necessary (important) information can be displayed with good visibility (display at a location corresponding to the illustration image and display with a large display), and the work state can be confirmed. The operability of the crane operation can be improved. In addition, the jib length and the hook movement amount can be displayed simultaneously, and both information can be obtained at the same time. In addition, such display can be performed with a small display means (without increasing the size of the display means) without complicating the display contents.

In the above embodiment, the display switching between the jib length and the hook moving amount is manually selected and switched by the basic display switch 14D and the hook moving amount switch 14G. However, the switching may be performed automatically. For example, a jib telescopic operation detector for detecting the telescopic operation of the jib 5 is provided,
The jib length may be displayed on the jib length display 19C and the hook movement amount may be displayed on the character display 19J when the jib 5 is extended or retracted.

A main winch operation detector for detecting the operation of the main winch 11 is provided.
At the time of the operation of 1, the movement amount of the main hook is displayed on the jib length display 19C, and a sub winch operation detector for detecting the operation of the sub winch 8 is provided. When the sub winch 8 is operated, the movement of the sub hook is displayed on the jib length display 19C. The amount may be displayed and the jib length may be displayed on the character display 19J.

Further, in the above embodiment, the jib length display 1
Since 9C is displayed at a position corresponding to the illustration image and is displayed larger than the character display 19J,
Although the important information is displayed as a display with good visibility in preference to the character display 19J, the character display 19J is displayed larger than the jib length display 19C and the jib length display 1 is displayed.
The display may be displayed with better visibility than 9C, and important information may be displayed on the character display 19J prior to the jib length display 19C.

Next, in the above-described embodiment, the display of the jib length and the amount of hook movement is switched between two displays and selectively displayed. However, the display is performed not only with the jib length and the amount of hook movement but also with other display contents. You may do so. For example, boom length and boom height, boom height limit value and boom height, boom elevation angle and boom upper angle limit value, boom elevation angle and boom lower angle limit value, jib length and boom upper angle limit value, etc. It can be done in combination.

1-4-3. The operation display unit 20A is a display unit that displays various operation states without corresponding to the illustration image display as shown in FIG. 7, and includes a boom height restriction indicator light 20a and a work radius restriction indicator light. 20b, a boom upper limit angle limit indicator light 20c, a boom lower limit angle limit indicator light 20d, a main hook movement amount selection indicator light 20E, and a sub hook movement amount selection indicator light 20F.

The boom height limit indicator light 20a, the work radius limit indicator light 20b, the boom upper limit angle limit indicator light 20c, and the boom lower limit angle limit indicator light 20d are the same as those described in the prior art, and therefore will not be described. I do.

The main hook moving amount selection display 20E displays the hook moving amount of the main hook 13 by the main / sub hook changeover switch 14I when displaying the hook moving amount on the display means (jib length display 19C or character display 19J). It is an indicator light (LED) that is turned on when it is selected to be turned on.

The sub-hook movement selection indicator lamp 20F displays the amount of hook movement of the sub-hook 10 by means of the main / sub-hook changeover switch 14I when displaying the amount of hook movement on the display means (jib length display 19C or character display 19J). Is an indicator light (LED) that is turned on when selected as described above.

The setting of each actuation amount limitation by the actuation amount limiting device C according to the present invention thus configured is described with reference to FIGS.
As shown in the flowchart of FIG.
A is set by the operation amount limit setting section 16H of A. Hereinafter, description will be made based on the flowcharts of FIGS.

[0105] 2. Flow chart for setting / releasing each operation amount limit
Over door 2-1. Select or release the operation amount limit setting / release mode
De flowchart first flowchart of the selection or withdrawal setting and release mode of operation amount limitation illustrated and described in FIG. In step 1, the flags f, A, B, C, and D are initialized to 0, and the process proceeds to step 2. In step 2, it is determined whether or not the operation amount limit selection switch 14B has been pressed. If the switch has not been pressed, the process proceeds to step 3, and if it has been pressed, the process proceeds to step 5.
In step 3, it is determined whether or not the basic display switch 14D has been pressed, and if not, the process proceeds to step 2, and
If so, the process proceeds to step 4. In step 4, each display as shown in FIG. 7 displays the set standard display in response to a command from the standard command section 16 </ b> R, and then proceeds to step 6.
In step 6, the flag f is set to 0, and the process returns to step 2. In step 5, an illustration of an arrow relating to each restriction display is displayed, and an illustration of an arrow relating to another display is not displayed. (For example, as for the illustration of the arrow displayed in relation to the boom length display 19A, the illustration of the arrow indicating the boom height restriction is displayed, and the illustration of the arrow indicating the boom length is not displayed. As for the illustration of the arrow displayed in relation to the elevation angle display 19B, the illustration of the arrow indicating the boom lower limit angle is displayed, and the illustration of the arrow indicating the boom elevation angle is not displayed. For the illustration of the arrow to be displayed, the illustration of the arrow indicating the boom upper limit angle is displayed, and the illustration of the arrow indicating the jib length, the illustration of the hook, and the like are not displayed.) 2-2. Boom Height Limit Setting / Canceling Flowchart A flowchart for setting / releasing the boom height limitation is shown in FIG. 3 and described. The process proceeds from step 5 of FIG. 2 to step 10. If the flag f is 0 in step 10, the process proceeds to step 1.
Proceed to 1; if not 0, proceed to Step 20. When the process proceeds to step 11, the flow for setting / releasing the boom height limit is performed. In step 11, as shown in FIG. 8, an illustration of an arrow indicating a boom height limit displayed in association with the boom length display 19A is blinked and the process proceeds to step 12. In step 12, it is determined whether or not the flag A is 0. If the flag A is 0, the process proceeds to step 13, and if not, the process proceeds to step 14. In step 13, as shown in FIG. 8, the boom height calculation unit 1 is displayed on the boom length display 19A.
The boom height calculated in 6c is displayed, and the boom height display flashes, and the process proceeds to step 15. In step 14, the set boom height limit value is displayed on the boom length display 19A, and the process proceeds to step 15.

In step 15, the boom angle display 19B not selected by the operation amount limit selection switch 14B,
The display of the jib length display 19C and the work radius display 19E are stopped (displayed as “−−−−”), and the process proceeds to step S16.

In step 16, it is determined whether or not the decision switch 14C has been pressed. If not, the process proceeds to step 23, and if it has been pressed, the process proceeds to step 17. In step 17, it is determined whether or not the flag A is 0. If the flag A is 0, the process proceeds to step 19; otherwise, the process proceeds to step 18.

In step 19, the blinking of the numerical value of the boom height which is blinking on the boom length display 19A is stopped.
The displayed boom height is set and stored as a boom height limit value. Then, the boom height limit display lamp 20a is turned on, and the process proceeds to step 21. In step 21, the flag A is set to 1 and the process proceeds to step 22.

In step 18, the boom height calculated by the boom height calculator 16c is displayed in a blinking manner instead of the boom height limit value displayed on the boom length display 19A, and the boom height limit stored and set is stored. Release (delete) the value. Then, the boom height restriction indicator light 20a is turned off, and the
Go to 0. At step 20, the flag A is set to 0, and the routine proceeds to step 22.

In step 22, a value obtained by adding 1 to the current flag f is set as the flag f, and the process returns to step 2. In step 23, the operation amount limit selection switch 14B
It is determined whether or not has been pressed again. If the button has not been pressed, the process returns to step 11, and if it has been pressed, the process proceeds to step 24.
In step 24, a value obtained by adding 1 to the current flag f is set as the flag f, and the process returns to step 10.

2-3. Set / cancel boom upper angle limit
Flowcharts now shown and described a flowchart of setting and canceling the boom upper angle limit in FIG. The process proceeds from step 10 to step 30 in FIG. 3. If the flag f is 1 in step 30, the process proceeds to step 31. If the flag f is not 1, the process proceeds to step 50. When the process proceeds to step 31, the flow for setting / releasing the boom upper limit angle is performed. In step 31, as shown in FIG. 9, an illustration of an arrow indicating the boom upper limit angle displayed in association with the jib length display 19C is blinked and the process proceeds to step 32. In step 32, it is determined whether or not the flag B is 0. If it is 0, the process proceeds to step 33, and if it is not 0, the process proceeds to step 34. In step 33, the boom up / down angle calculated by the operation state calculation unit 16a is displayed on the jib length display 19C as shown in FIG. 9, and the boom up / down angle display is flickered. At step 34, the set boom upper limit angle limit value is displayed on the jib length display 19C, and the process proceeds to step 35. At step 35, each limit value display (boom length) not selected by the operation amount limit selection switch 14B is performed. Display 19A,
The display of the boom hoisting angle display 19B and the work radius display 19E) is changed to a stop display (displayed as “−−−−”), and step 3 is performed.
Proceed to 6.

In step 36, it is determined whether or not the enter switch 14C has been pressed. If the switch has not been pressed, the process proceeds to step 43, and if it has been pressed, the process proceeds to step 37. In step 37, it is determined whether or not the flag B is 0. If the flag B is 0, the process proceeds to step 39; otherwise, the process proceeds to step 38.

In step 39, the blinking of the boom up / down angle displayed blinking on the jib length display 19C is stopped, and the displayed boom up / down angle is set and stored as a boom upper limit angle limit value. Then, the boom upper limit angle restriction indicator lamp 20c is turned on, and the routine proceeds to step 41. In step 41, the flag B is set to 1 and the process returns to step 22.

In step 38, the boom up / down angle calculated by the operating state calculation section 16a is displayed in a blinking manner instead of the boom upper limit angle displayed on the jib length display 19C, and the set boom upper limit angle is displayed. Cancel (erase). Then, the boom upper limit angle indicator light 20c is turned off, and step 4 is performed.
Go to 0. At step 40, the flag B is set to 0, and the routine proceeds to step 22. In step 22, the current flag f
Is set as the flag f by adding 1 to
Return to In step 43, the operation amount limit selection switch 1
It is determined whether or not 4B has been pressed again. If not, the process returns to step 31; otherwise, the process proceeds to step 24. In step 24, a value obtained by adding 1 to the current flag f is set as the flag f, and the process returns to step 10.

2-4. Boom lower limit angle setting / release
The low chart, shown and described a flowchart of setting and canceling the boom lower angle limit in FIG. The process proceeds from step 30 in FIG. 4 to step 50. If the flag f is 2 in step 50, the process proceeds to step 51. Otherwise, the process proceeds to step 70. When the process proceeds to step 51, a flow for setting / releasing the lower limit angle limit is performed. In step 51, as shown in FIG. 10, an illustration of an arrow indicating the lower limit angle of the boom to be displayed in relation to the boom angle display 19B is blinked and the process proceeds to step 52. In step 52, it is determined whether or not the flag C is 0. If it is 0, the process proceeds to step 53, and if it is not 0, the process proceeds to step 54. In step 53, as shown in FIG. 10, the boom up / down angle calculated by the operation state calculation unit 16a is displayed on the boom up / down angle display 19B, and the boom up / down angle display blinks. In step 54, the previously set boom lower limit angle limit value is displayed on the boom up / down angle display 19B.
Proceed to.

At step 55, each limit value display (boom length display 19A, jib length display 19C, work radius display 19) not selected by the operation amount restriction selection switch 14B is performed.
E) Each display is stopped (displayed as "---"), and
Proceed to step 56.

In step 56, it is determined whether or not the enter switch 14C has been pressed. If the switch has not been pressed, the process proceeds to step 63, and if it has been pressed, the process proceeds to step 57. In step 57, it is determined whether or not the flag C is 0. If the flag C is 0, the process proceeds to step 59; otherwise, the process proceeds to step 58.

In step 59, the boom angle display 19B is displayed.
Is stopped, and the displayed boom up / down angle is set as a boom lower limit angle limit value and stored. Then, the boom lower limit angle restriction display lamp 20d is turned on, and the routine proceeds to step 61. In step 61,
The flag C is set to 1 and the process returns to step 22.

In step 58, the boom undulation angle display 19B
The boom lowering / lowering angle calculated by the operating state calculator 16a is displayed in a blinking manner instead of the boom lower limit angle limit value displayed in (b), and the set boom lower limit angle limit value is canceled (erased). Then, the boom lower limit angle restriction indicator lamp 20d is turned off, and the process proceeds to step S60. At step 60, the flag C is set to 0, and the routine proceeds to step 22. In step 22, a value obtained by adding 1 to the current flag f is set as the flag f, and the process returns to step 2. In step 63, it is determined whether or not the operation amount limit selection switch 14B has been pressed again. If the switch has not been pressed, the process returns to step 51;
Proceed to. In step 24, a value obtained by adding 1 to the current flag f is set as the flag f, and the process returns to step 10.

2-5. Setting / releasing flow of work radius restriction
Chart FIG. 6 shows a flowchart for setting / releasing the work radius limit, which will be described. The process proceeds from step 50 to step 70 in FIG. 5. If the flag f is 3 in step 70, the process proceeds to step 71. If the flag f is not 3, the process proceeds to step 84.
When the process proceeds to step 71, a flow for setting / releasing the work radius limit is performed. In step 71, as shown in FIG. 11, an illustration of an arrow indicating the work radius to be displayed in association with the work radius display 19E is blinked and the process proceeds to step 72. In step 72, it is determined whether or not the flag D is 0. If the flag D is 0, the process proceeds to step 73; otherwise, the process proceeds to step 74. In step 73, as shown in FIG. 11, the work radius calculator 19 displays the work radius display 19E.
The work radius calculated in b is displayed, the display of the work radius blinks, and the routine proceeds to step 75. In step 74, the work radius limit value that has been set is displayed on the work radius display 19E, and the flow proceeds to step 75.

In step 75, each limit value display (boom length display 19A, boom up / down angle display 19B, jib length display 1) not selected by the operation amount limit selection switch 14B is displayed.
9C) is stopped (displayed as “−−−”), and the process proceeds to step 76.

At step 76, it is determined whether or not the enter switch 14C has been pressed. If the switch has not been pressed, the process proceeds to step 83, and if it has been pressed, the process proceeds to step 77. In step 77, it is determined whether or not the flag D is 0. If the flag D is 0, the process proceeds to step 79; otherwise, the process proceeds to step 78.

In step 79, the blinking of the work radius displayed blinking in the work radius display 19E is stopped, and the displayed work radius is set and stored as a work radius limit value. Then, the work radius limit display lamp 20b is turned on, and the routine proceeds to step 81. At step 81, the flag D is set to 1 and the routine proceeds to step 82.

In step 78, the work radius calculation unit 16 changes the work radius limit value displayed on the work radius display 19E to the work radius limit value.
The work radius calculated in b is blinkingly displayed, and the set work radius limit value is canceled (erased). Then, the work radius limit display lamp 20b is turned off, and the routine proceeds to step 80. At step 80, the flag D is set to 0, and the routine proceeds to step 82. In step 82, a value obtained by adding 1 to the current flag f is set as the flag f, and the process returns to step 2. In step 83, it is determined whether or not the operation amount limit selection switch 14B has been pressed again.
When the button is pressed, the process proceeds to step 84. Step 8
In step 4, a value obtained by adding 1 to the current flag f is set as the flag f, and the process returns to step S10.

Since the flowchart is set as described above, the limitation of each operation amount is set or canceled as follows . Selection or mode of each operation amount limit setting / release mode
Departure from de First, when canceling the setting or settings for each operation amount limit, press the operation amount restriction selection switch 14B. Then Figure 2
Go to step 5 in step 2 of the flowchart shown in FIG. An illustration of an arrow representing the boom height in step 5,
An illustration of an arrow representing the upper boom angle, an illustration of the lower boom angle, and an illustration of the working radius are displayed.
Illustrations such as arrows not related to the restriction setting disappear (not displayed). Then, the process proceeds to step 10, where setting or cancellation is performed from the boom height limit.

On the other hand, when the various operation amount restrictions described below are set or released and the process returns to step 2, the various operation amount restrictions are stopped or set, and the operation amount restriction is set or released. If so, the basic display switch 14D is pressed to proceed from step 3 to step 4. In step 4, the standard display as shown in FIG. 7 is displayed, and the operation amount limitation can be set or released. 4. Setting of each operation amount limit 4-1. Boom height limit setting When the operation amount limit selection switch 14B is pressed and the process proceeds to step 10, the flag f is initially set to 0, so the process proceeds to step 11 and the arrow illustration representing the boom height flashes in step 11. Is displayed, and the process proceeds to step 12. Since the flag A is 0 in step 12, the process proceeds to step 13,
At step 13, as shown in FIG. 8, the boom height calculated by the boom height calculator 16c is displayed on the boom length display 19A, and the boom height display is flashed.
Go to 5. In step 15, each of the unselected boom hoisting angle display 19B, jib length display 19C, and work radius display 19E is stopped (displayed as "----").
Proceed to step 16.

Here, if the decision switch 14C is not pressed without pressing the operation amount limit selection switch 14B, step 1 is executed.
1. Since the execution of steps 1, 13 and 15 is repeated, the illustration of the arrow representing the boom height is blinked and the boom height is blinked, the boom undulation angle display 19B, the jib length display 19C, the work radius display 19E
Are kept stopped. That is, in this state, it is in a state of waiting for the setting of the boom height limit or waiting for the operator to select whether to perform the next limit setting / cancellation.

When the blinking boom height is to be set as the boom height limit value, the decision switch 1
Press 4C, if you do not want to, select the operation amount selection switch 14
Press B. Now, the case where the setting is set will be described, so the case where the enter switch 14C is pressed will be described. Therefore, the process proceeds from step 16 to step 17, and since the flag A is 0 in step 17, the process proceeds to step 19. In step 19, the blinking of the boom height value blinking on the boom length display 19A is stopped, and the displayed boom height is set and stored as a boom height limit value. Then, the boom height restriction indicator lamp 20a is turned on. That is, in this case, the blinking of the boom height display is stopped, and the operator is notified of the setting of the boom height limit value by turning on the boom height limit display lamp 20a.

Then, in step 21, the flag A is set to 1, and the flow advances to step 22. In step 22, the flag f is set to 1
Is set as the flag f, and the process returns to step 2.

4-2. Boom upper limit angle setting Press the operation amount limit selection switch 14B to set the boom height limit once and then operate the amount limit selection switch 14 again.
When B is pressed, the process proceeds from step 2 to step 10. Alternatively, when the operation amount limitation selection switch 14B is pressed in order to stop the setting / cancellation of the boom height limitation in step 23, the process proceeds to step 10. At this time, since the flag f is set to 1 in step 10, the process proceeds to step 30.

When the process proceeds to step 30, the flag f is set to 1, so the process proceeds to step 31. In step 31, the illustration of the arrow representing the boom upper limit angle is blinked, and the process proceeds to step 32. At step 32, since the flag B is 0, the process proceeds to step 33. At step 33, as shown in FIG. 9, the operating state calculating section 16a is displayed on the jib length display 19C.
Is displayed, the boom angle display is flickered, and the routine proceeds to step 35. In step 35, the display of the unselected boom length display 19A, boom hoisting angle display 19B, and work radius display 19E is stopped (displayed as "----"), and the routine proceeds to step 36.

If the decision switch 14C is not pressed without pressing the operation amount limit selection switch 14B, step 3 is executed.
1. Steps 33 and 35 are repeatedly executed, so that the illustration of the arrow indicating the boom upper limit angle is blinked and the boom elevation angle display is blinked, the boom length display 19A, the boom elevation angle display 19B, the work radius display Each display of 19E is kept stopped. That is, in this state, it is in a state of waiting for the setting of the boom upper limit angle limit or waiting for the operator to select whether to set or cancel the next limit.

Here, if it is desired to set the blinking boom elevation angle as the boom upper limit angle limit value, the confirmation switch 14C is pressed, and if not, the operation amount selection switch 14B is pressed. Now, the case where the setting is set will be described, so the case where the enter switch 14C is pressed will be described. Therefore, the process proceeds from step 36 to step 37, and step 3
In step 7, since the flag B is 0, the process proceeds to step 39.
In step 39, the blinking of the boom angle value displayed blinking on the jib length display 19C is stopped, and the displayed boom angle is set and stored as the boom upper limit angle limit value. Then, the boom upper limit angle restriction indicator lamp 20c is turned on. That is, in this case, the blinking display of the boom elevation angle display is stopped, and the operator is made aware of the setting of the boom upper limit angle limit value by turning on the boom upper limit angle display lamp 20c.

Then, in step 41, the flag B is set to 1, and the flow advances to step 22. In step 22, the flag f is set to 1
Is set as the flag f, and the process returns to step 2.

4-3. Set the boom lower limit angle Press the operation amount limit selection switch 14B to set the boom upper angle limit once and then operate the operation amount limit selection switch 1 again
When 4B is pressed, the process proceeds from step 2 to step 50 through step 10 and step 30. Or step 43
When the operation amount limit selection switch 14B is pressed in order to stop the setting / cancellation of the boom upper limit angle, the process proceeds to step 50 via steps 10 and 30.

When the flow advances to step 50, the flag f is set at 2, so the flow advances to step 51. In step 51, the illustration of the arrow indicating the lower limit angle of the boom is blinked, and the flow advances to step 52. In step 52, since the flag C is 0, the process proceeds to step 53. In step 53, the boom up / down angle calculated by the operation state calculation unit 16a is displayed on the boom up / down angle display 19B as shown in FIG. The display blinks, and the routine proceeds to step 55. Step 5
At 5, the display of the unselected boom length display 19A, jib length display 19C, and work radius display 19E is stopped (displayed as "----"), and the routine proceeds to step 56.

If the decision switch 14C is not pressed without pressing the operation amount limit selection switch 14B, step 5 is executed.
1. Since the execution of step 53 and step 55 is repeated, the illustration of the arrow representing the boom lower limit angle is blinked and the boom undulation angle is blinked, the boom length display 19A, the jib length display 19C, and the work radius display 19
Each display of E remains the stop display. That is, in this state, it is in a state of waiting for the setting of the boom lower limit angle limit or waiting for the operator to select whether to perform the next limit setting / cancellation.

Here, if the blinking boom angle is to be set as the boom lower limit angle limit value, the decision switch 14C is pressed, and if not, the actuation amount selection switch 14B is pressed. Now, the case where the setting is set will be described, so the case where the enter switch 14C is pressed will be described. Therefore, the process proceeds from step 56 to step 57, and step 5
In step 7, since the flag C is 0, the process proceeds to step 59.
In step 59, the blinking of the boom up / down angle value blinking displayed on the boom up / down angle display 19B is stopped, and the displayed boom up / down angle is set and stored as the boom lower limit angle limit value. Then, the boom lower limit angle restriction indicator lamp 20d is turned on. That is, in this case, the blinking display of the boom elevation angle display is stopped, and the operator is made aware of the setting of the boom lower limit angle limit value by turning on the boom lower limit angle display light 20d.

At step 61, the flag C is set to 1, and the routine proceeds to step 22. In step 22, the flag f is set to 1
Is set as the flag f, and the process returns to step 2.

[0140] 4-4. Setting of working radius limit Pressing the operation amount limit selection switch 14B to set the lower limit of the boom once and then setting the operation amount limit selection switch 1 again
When 4B is pressed, the process proceeds from step 2 to step 70 via steps 10, 30, and 50. Alternatively, in order to stop the setting / cancellation of the boom lower limit angle in step 63, when the operation amount limit selection switch 14B is pressed, the process proceeds to step 70 via steps 10, 30, and 50.

When the flow advances to step 70, the flag f is set at 3, so the flow advances to step 71. In step 71, the illustration of the arrow indicating the work radius is blinked, and the flow advances to step 72. In step 72, since the flag D is 0, the process proceeds to step 73. In step 73, the work radius calculated by the work radius calculator 16b is displayed on the work radius display 19E as shown in FIG. And proceed to step 75. In step 75, the unselected boom length display 19A and the boom undulation display 19
B, the display of the jib length display 19C is stopped (“−−
− ”Is displayed), and the routine proceeds to step 76.

If the decision switch 14C is not pressed without pressing the operation amount limit selection switch 14B, step 7 is executed.
1. Since the execution of step 73 and step 75 is repeated, the illustration of the arrow indicating the working radius blinks and the working radius display blinks, and the boom length display 1
9A, the boom angle display 19B, and the jib length display 19C remain stopped. That is, in this state, it is in a state of waiting for the setting of the work radius limit or waiting for the operator to select whether to perform the next limit setting / cancellation.

If the user wants to set the blinking work radius as the work radius limit value, the decision switch 14C
Is pressed, and if it is not desired, the operation amount selection switch 14B is pressed. Now, the case where the setting is set will be described, so the case where the enter switch 14C is pressed will be described. Therefore, the process proceeds from step 76 to step 77. Since the flag D is 0 in step 77, the process proceeds to step 79. In step 79, the blinking of the work radius value displayed blinking on the work radius display 19E is stopped, and the displayed work radius is set and stored as the work radius value. Then, the work radius limit indicator lamp 20b is turned on. That is, here, the blinking display of the work radius display is stopped, and the operator is notified that the work radius limit value has been set by turning on the work radius limit display lamp 20b.

Then, in step 81, the flag D is set to 1, and the flow advances to step 82. At step 82, the flag f is set to 0.
And returns to step 2.

[0145] 5. Release of each operation amount restriction 5-1. Release of Boom Height Limit Next, a case of releasing the boom height limit set above will be described. After setting the boom height limit and performing other limit setting operations and finally setting the work radius limit according to the flowchart of FIG. 6, the process proceeds from step 81 to step 82, where the flag f is set to 0 in step 82. And return to step 2. Then, in step 2, the operation proceeds from step 2 to step 10 by pressing the operation amount limit selection switch 14B. If the work radius limit is not set or released according to the flowchart of FIG.
To set the flag f to 0, and then return to step 10.

In step 10, since the flag f is set to 0, the process proceeds to step 11, in which the illustration of the arrow representing the boom height is blinked, and the process proceeds to step 12. Since the boom height limit value has already been set in step 12 and the flag A is 1, the process proceeds to step 14, and in step 14, the boom height limit value stored in the boom length display 19A as shown in FIG. The value is displayed, and the process proceeds to step 15. In step 15, the unselected boom hoist angle display 19B and jib length display 19
C, each display stop display of the work radius display 19E (“−−
− ”Is displayed), and the process proceeds to step 16.

Here, if the decision switch 14C is not pressed without pressing the operation amount limit selection switch 14B, step 1 is executed.
1. Since the execution of steps 1, 14 and 15 is repeated, the illustration of the arrow representing the boom height is displayed blinking, the boom height limit value is displayed, the boom undulation angle display 19B, the jib length display 19C, the work radius are displayed. Display 19
Each display of E remains the stop display. That is, in this state, it is in a state of waiting for the release of the boom height limit value or waiting for the operator to select whether to perform the next limit setting / release.

If the user wants to cancel the boom height limit value displayed here, he presses the decision switch 14C. If he does not want to cancel it, he presses the operation amount selection switch 14B. Now, a case where the confirmation switch 14C is pressed will be described as a case of canceling. Therefore, the process proceeds from step 16 to step 17, and since the flag A is 1 in step 17, the process proceeds to step 18. In step 18, the boom height limit value displayed on the boom length display 19A is changed to the boom height (current boom height) calculated by the boom height calculation unit 16c and displayed. Make the value blink. Then, the set and stored boom height limit value is released (erased). And boom height limit indicator light 2
0a is turned off. That is, here, the numerical value of the boom height display is blinked and displayed, and the operator is notified that the boom height limit value has been released by turning off the boom height limit display lamp 20a.

Then, in step 20, the flag A is set to 0, and the flow advances to step 22. In step 22, the flag f is set to 1
Is set as the flag f, and the process returns to step 2.

5-2. Release of Boom Upper Limit Angle Limit The following describes how to release the boom upper limit angle limit set above. After setting the boom upper limit angle, another limit setting operation is performed, and when the work radius limit is finally set according to the flowchart of FIG. 6, the process returns from step 82 to step 2. Then, in step 2, by pressing the operation amount limit selection switch 14B, steps 2 to 10 are performed.
Proceed to. When the setting / cancellation of the work radius limitation according to the flowchart of FIG. 6 is not performed, the process returns from step 84 to step 10.

In step 10, since the flag f is set to 0, the flow proceeds to step 11 and the subsequent steps, and when the setting or release of the boom height limit is performed, the operation amount limit selection switch 14B is pressed again so that step 2 is performed. Then, the process returns to step 10. Alternatively, when the setting or canceling of the boom height limit is not performed, the operation amount limit selection switch 1
Pressing 4B returns to step 10 via step 23. Since the flag f is set to 1 in step 10 at this time, the process proceeds from step 10 to step 30.

When the flow advances to step 30, the flag f is set to 1, so the flow advances to step 31. In step 31, the illustration of the arrow indicating the boom upper limit angle is blinked, and the flow advances to step 32. At step 32, since the flag B is 1, the routine proceeds to step 34. At step 34, the boom upper limit angle limit value stored in the jib length display 19C is displayed as shown in FIG. 9, and the routine proceeds to step 35. In step 35, the display of the unselected boom length display 19A, boom hoisting angle display 19B, and work radius display 19E is stopped (displayed as "----"), and the routine proceeds to step 36.

If the decision switch 14C is not pressed without pressing the operation amount limit selection switch 14B, step 3 is executed.
1. Since the execution of Steps 34 and 35 is repeated, the illustration of the arrow representing the boom upper limit angle is blinked and the boom upper limit angle numerical value is displayed, the boom length display 19A, the boom undulation angle display 19B, the work radius Each display of the display 19E remains stopped. That is, in this state, it is in a state of waiting for the release of the boom upper limit angle limit value or waiting for the operator to select whether to perform the next limit setting / release.

If the user wants to cancel the boom upper limit angle limit value displayed here, he presses the confirmation switch 14C, and if he does not want to release it, he presses the operation amount selection switch 14B. Now, a case where the confirmation switch 14C is pressed will be described as a case of canceling. Therefore, the process proceeds from step 36 to step 37. Since the flag B is 1 in step 37, the process proceeds to step 38. In step 38, the boom upper limit angle value displayed on the jib length display 19C is changed to the boom angle (the current boom angle) calculated by the operation state calculator 16a and displayed, and the numerical value of the boom angle is displayed. Flashes. Then, the boom upper limit limit value stored and set is released (erased). Then, the boom upper angle limit display lamp 20c is turned off. That is, here, the value of the boom upper limit display is blinked and the boom upper limit display lamp 20c is turned off so that the operator can recognize that the boom upper limit limit value has been released.

Then, in step 40, the flag B is set to 0, and the flow advances to step 22. In step 22, the flag f is set to 1
Is set as the flag f, and the process returns to step 2.

5-3. Release of Boom Lower Limit Angle Limit A case in which the boom lower limit angle limit set above is released will be described. After setting the boom lower limit angle limit, another limit setting operation is performed, and when the work radius limit is finally set according to the flowchart of FIG. 6, the process returns from step 82 to step 2. Then, in step 2, by pressing the operation amount limit selection switch 14B, steps 2 to 10 are performed.
Proceed to. When the setting / cancellation of the work radius limitation according to the flowchart of FIG. 6 is not performed, the process returns from step 84 to step 10.

In step 10, since the flag f is set to 0, the flow proceeds to step 11 and the subsequent steps, and when the setting or release of the boom height limit is performed, the operation amount limit selection switch 14B is pressed again so that step 2 is performed. Then, the process returns to step 10. Alternatively, when the setting or canceling of the boom height limit is not performed, the operation amount limit selection switch 1
Pressing 4B returns to step 10 via step 23. Since the flag f is set to 1 in step 10 at this time, the process proceeds from step 10 to step 30.

In step 30, since the flag f is set to 1, the flow proceeds to step 31 and the subsequent steps, and when the setting or cancellation of the boom upper limit angle is performed, the operation amount limit selection switch 14B is pressed again to switch to step 2 Then, the process returns to step 10. Alternatively, when the setting or release of the boom upper limit has not been performed, the operation amount limit selection switch 14B is pressed, and the process proceeds to step 10 through step 43.
Return to Since the flag f is set to 2 in step 10 at this time, the process proceeds from step 10 to step 50 via step 30.

When the flow advances to step 50, the flag f is set to 2, so the flow advances to step 51. In step 51, the illustration of the arrow indicating the lower limit angle of the boom is blinked, and the flow advances to step 52. At step 52, since the flag C is 1, the routine proceeds to step 54. At step 54, as shown in FIG. 10, the boom lower limit angle limit value stored in the boom elevation angle display 19B is displayed, and the routine proceeds to step 55. In step 55, the unselected boom length display 19
A, the display of the shib length display 19C and the display of the work radius display 19E are stopped (displayed as “−−−−”).
Proceed to.

If the decision switch 14C is not pressed without pressing the operation amount limit selection switch 14B, step 5 is executed.
1. Since the execution of step 54 and step 55 is repeated, the illustration of the arrow indicating the boom lower limit angle is blinked and the boom lower limit angle limit numerical value is displayed, and the boom length display 19A, the shib length display 19C, the work radius Each display of the display 19E remains stopped. That is, in this state, it is in a state of waiting for the release of the boom lower limit angle limit value or waiting for the operator to select whether to perform the next limit setting / release.

If the user wants to cancel the boom lower limit angle limit value displayed here, he presses the decision switch 14C. If he does not want to cancel it, he presses the actuation amount selection switch 14B. Now, a case where the confirmation switch 14C is pressed will be described as a case of canceling. Therefore, the process proceeds from step 56 to step 57. Since the flag C is 1 in step 57, the process proceeds to step 58. In step 58, the boom lower limit angle limit value displayed on the boom angle display 19B is changed to the boom angle (current boom angle) calculated by the operating state calculator 16a and displayed, and the numerical value of the boom angle is displayed. Flashes. Then, the boom lower limit angle limit value set and stored is canceled (erased). Then, the boom lower limit angle restriction indicator lamp 20d is turned off. That is, here, the value of the boom lower limit angle display blinks to indicate that the boom lower limit angle limit value has been released, and the boom lower limit angle limit indicator 20
By turning off d, the operator is made to recognize.

At step 60, the flag C is set to 0, and the routine proceeds to step 22. In step 22, the flag f is set to 1
Is set as the flag f, and the process returns to step 2.

5-4. Release of work radius restriction A case where the work radius restriction set above is released will be described. After setting the work radius limit, the process returns from step 82 to step 2. Then, in step 2, the operation proceeds from step 2 to step 10 by pressing the operation amount limit selection switch 14B. If the work radius limit is not set or released according to the flowchart of FIG.
Then, the process returns to step 10.

In step 10, since the flag f is set to 0, the flow proceeds to step 11 and the subsequent steps, and when the setting or release of the boom height limit is performed, the operation amount limit selection switch 14B is pressed again so that step 2 is performed. Then, the process returns to step 10. Alternatively, when the setting or canceling of the boom height limit is not performed, the operation amount limit selection switch 1
Pressing 4B returns to step 10 via step 23. Since the flag f is set to 1 in step 10 at this time, the process proceeds from step 10 to step 30.

In step 30, since the flag f is set to 1, the flow proceeds to step 31 and the subsequent steps, and when the setting or cancellation of the boom upper limit angle is performed, the operation amount limit selection switch 14B is pressed again so that step 2 is performed. Then, the process returns to step 10. Alternatively, when the setting or cancellation of the boom upper limit has not been performed, the operation amount limit selection switch 14B is pressed, and the process proceeds to step 10 through step 43.
Return to Since the flag f is set to 2 in step 10 at this time, the process proceeds from step 10 to step 50 via step 30.

In step 50, the flag f is set to 2, so that the flow proceeds to step 51 and subsequent steps, and when the setting or cancellation of the lower limit of the boom lower limit is performed, the operation amount limit selection switch 14B is pressed again to switch to step 2 Then, the process returns to step 10. Alternatively, when the setting or release of the boom lower limit limit has not been performed, the operation amount limit selection switch 14B is pressed, and the process proceeds to step 10 through step 63.
Return to Since the flag f is set to 3 in step 10 at this time, the process proceeds from step 10 to step 70 through step 30 and step 50.

When the flow advances to step 70, the flag f is set at 3, so the flow advances to step 71. In step 71, the illustration of the arrow indicating the work radius is displayed in a blinking manner, and the flow advances to step 72. Since the flag D is 1 in step 72, the process proceeds to step 74. In step 74, the work radius limit value stored in the work radius display 19E is displayed as shown in FIG. At step 75, the display of the unselected boom length display 19A, boom undulation angle display 19B, and shib length display 19C is stopped (displayed as "----"), and the routine proceeds to step 76.

If the decision switch 14C is not pressed without pressing the operation amount limit selection switch 14B, step 7 is executed.
1, since the execution of steps 74 and 75 is repeated, the illustration of the arrow indicating the work radius is blinked and the work radius limit numerical value is displayed, and the boom length display 19A, the boom undulation angle display 19B, and the shib length display 19
Each display of C remains stopped. That is, in this state, it is in a state of waiting for release of the work radius limit value or waiting for the operator to select whether to perform the next limit setting / release.

If the operator wants to cancel the work radius limit value displayed here, he presses the decision switch 14C. If he does not want to cancel it, he presses the actuation amount selection switch 14B. Now, a case where the confirmation switch 14C is pressed will be described as a case of canceling. Therefore, the process proceeds from step 76 to step 77. Since the flag D is 1 in step 77, the process proceeds to step 78. In step 78, the work radius limit value displayed on the work radius display display 19E is changed to the work radius (current work radius) calculated by the work radius calculator 16b and displayed, and the numerical value of the work radius blinks. I do. Then, the work radius limit value set and stored is released (erased). Then, the work radius restriction indicator light 20b is turned off. That is, here, the numerical value of the work radius display blinks and the operator is notified that the work radius limit value has been released by turning off the work radius limit display lamp 20b.

At step 80, the flag D is set to 0, and the routine proceeds to step 82. At step 82, the flag f is set to 0.
And returns to step 2.

[0171] 6. Operation / Effect of Embodiment When setting various operation amount restrictions (boom height restriction, boom upper limit angle restriction, boom lower limit angle restriction, work radius restriction), the operation is performed at a plurality of locations corresponding to the illustration image of the crane. Despite the display related to the volume limit, only the display related to the selected target working volume limit to be set is made to blink, and the display related to the other Is a stop display (so as not to display a display related to the operation amount restriction),
It is possible to eliminate erroneous setting with other operation amount limitation displays.

Further, at the time of setting or canceling, an illustration of an arrow related to the operation amount limitation is displayed, and an illustration of an arrow for another display which is not relevant is not displayed (erasing display). Since the illustration of the arrow related to the target operation amount restriction is made to blink, it is possible to prevent the display from being mistakenly set as another operation amount restriction display.

Further, when the setting or release is confirmed by the determination switch 14C, the operation amount restriction display is stopped or blinked, so that the operator can easily recognize the determination of the setting or release. it can.

Further, since the operation amount limit selection switch 14B is configured to be able to be sequentially selected by a single switch, each limit setting switch is set for each limit setting as described in the prior art. Because there are multiple switches, there is a possibility that a switch other than the target is pressed by mistake and settings other than the target are made, or because there are multiple limit setting switches for each limit setting, many switches are arranged on the panel surface. And the problem of having to enlarge the panel surface can be solved.

That is, the number of switches for setting can be reduced correspondingly, and the panel surface can be reduced accordingly.

[0176] 7. Other Embodiments In the above embodiment, the case where the operation amount limit value is set is made corresponding to claims 2 and 4, and the case where the operation amount limit value is released is set forth in claims 3 and 5. The case has been described. In other words, when setting the operation amount limit value, the display of the selected target operation amount limit flashes and the display of the other operation amount limit stops, and when it is confirmed, the display of the target operation amount limit flashes. Is to be stopped. Then, when releasing the operation amount limit value,
Only the display of the selected target operation amount limit is displayed, the display of the other operation amount restrictions is stopped, and the display of the target operation amount restriction blinks when it is confirmed.

[0177] Here, it is also possible to carry out the reverse of the above embodiment. That is, when setting the operation amount limit value, only the display of the selected target operation amount limit is displayed, the display of the other operation amount restrictions is stopped, and the display of the target operation amount restriction is displayed when the display is confirmed. Make it blink.
Then, when releasing the operation amount limit value, the display of the selected target operation amount limit blinks and the display of the other operation amount restrictions is stopped, and when it is confirmed, the target operation amount restriction is displayed. Blinking is stopped.

Further, in the above embodiment, when setting the operation amount restriction, the operation amount restriction (boom height restriction, boom upper angle restriction, boom lower angle control, work radius) selected by the operation amount restriction selection switch 14B. (Restriction) The display is blinked, and the operation amount limit value of the operation amount restriction display not selected by the operation amount restriction selection switch 14B is set to the stop display (to prevent the display related to the operation amount restriction from being performed). 2), only the operation amount restriction display selected by the operation amount restriction selection switch 14B flashes, and the operation amount restriction selection switch 1
The operation amount restriction display not selected in 4B may be displayed as it is (not to stop display).
In this case, the operation amount restriction display selected by the operation amount restriction selection switch 14B is blinked to be distinguished from other operation amount restriction displays. In other words, this case can be implemented by omitting steps 15, 35, 55, and 75 in the flowcharts shown in FIGS. When the actuation amount limitation is canceled and the distinction is made by blinking display, the blinking is displayed in step 14, step 34, step 54, and step 74, and step 18, step 38,
The blinking may be stopped in steps 58 and 78.

Further, when the operation amount limit is set in the above embodiment, the blinking display is stopped and the operation amount limit selection switch 14 is turned off.
Only the target operation amount restriction display selected by B is displayed, and the operation amount restriction display not selected by the operation amount restriction selection switch 14B is set to a stop display (to prevent the display relating to the operation amount restriction from being displayed). It may be one that has been set. (Corresponding to claim 3) In this case, only the operation amount restriction display selected by the operation amount restriction selection switch 14B is displayed and displayed on other operation amount restriction displays not selected by the operation amount restriction selection switch 14B. It is distinguished by not doing. That is, a case where the operation amount limitation is set in the above embodiment will be described as an example. Steps 13 and 3 in the flowcharts shown in FIGS.
3. In step 53, step 73, and step 73, the blinking is not performed. In addition, step 19, step 39, step 59, and step 79 need not be stopped. Then, Step 18, Step 38,
In steps 58 and 78, the light may be prevented from blinking. In this case, the setting and cancellation are performed without blinking display.

Next, in the above-described embodiment, only the selected target operation amount restriction display blinks and the other non-selected operation amount restriction displays are stopped, but other non-selected operation amount restriction displays are displayed. If a limit value has already been set in the limit display, the operation amount limit display may be displayed not as a stop display but as the set limit value. In this case, the target operation amount restriction display can be distinguished by whether or not the display is blinking.

Further, in the above embodiment, the operation amount limit setting
Although the release means has been described as being constituted by the operation amount limit selection switch 14B and the decision switch 14C, the setting and release may be performed by a common switch. The common switch may be constituted by a plurality of switches as in the case described in the related art.

In the above embodiment, the case where the present invention is applied to the working amount limiting device C of the crane A is described as an example. However, the present invention can be applied not only to the crane A but also to other working machines such as an aerial work vehicle. That is.

[0183]

According to the first aspect of the present invention, there is provided an operation amount limiting device for a working machine according to the present invention. Select the display related to the desired working amount limit to set or cancel the setting with the working amount limit selection switch even if the is set, and blink only the display related to the selected working amount limit. Then, the operation amount limit value is set or released by the confirmation switch, so that it is possible to prevent the setting amount from being mistakenly set as another operation amount limit display. In addition, if the operation amount limit selection switch is configured to be sequentially selected by a single switch, the number of switches for setting or canceling the setting can be reduced, and the panel surface can be reduced accordingly.

Further, in the working amount limiting device for a working machine according to the present invention, the display relating to the operating amount limit not selected by the operating amount limit selection switch in the first aspect is limited to the operating amount limit. Since the related display is prevented from being displayed, it is possible to prevent the setting or cancellation of the setting from being erroneously set to another operation amount restriction display.

Further, in the working amount limiting device for a working machine according to the present invention, when setting various working amount limits, a display relating to the working amount limitation is provided at a plurality of positions corresponding to the illustration image of the working machine. The display related to the target working amount limit whose setting or release is to be canceled is selected with the working amount limit selection switch, and only the display related to the selected working amount limit is displayed. In addition, the display related to the operation amount limitation is not displayed on the operation amount limitation value, and the operation amount limit value is set or released by the confirmation switch. Setting can be eliminated. In addition, if the operation amount limit selection switch is configured to be sequentially selected by a single switch, the number of switches for setting or canceling the setting can be reduced, and the panel surface can be reduced accordingly.

According to a fourth aspect of the present invention, in the working amount limiting device for a working machine according to the first or second aspect, when the operating amount limit value is set or released by the decision switch, the operating amount limitation display is displayed. Since the blinking is stopped, it is possible for the operator to recognize the confirmation of the setting or the cancellation.

According to a fifth aspect of the present invention, in the working amount limiting device for a working machine according to the third aspect, when the operating amount limit value is set or released by the confirmation switch, the operating amount limitation display is flashed. The setting or cancellation can be recognized by the operator.

According to a sixth aspect of the present invention, in the working quantity limiting device for a working machine according to the first to fifth aspects, the working machine is constituted by a crane truck and the illustration image is constituted by a crane illustration. The various operation amount restrictions of the crane can be arranged at locations corresponding to the display of the illustration image of the crane, and the operator can easily confirm the various operation amount restrictions.

According to a seventh aspect of the present invention, in the working amount limiting device for a working machine according to the sixth aspect, the controller can display the operating amount of the boom height and the working radius at a position corresponding to the illustration image of the crane, Since these work amount limit values are displayed, the operation amount and the operation amount limit can be recognized by the operator.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating an operation amount limiting device for a working machine according to the present invention.

FIG. 2 is an explanatory diagram illustrating an operation amount restriction device for a working machine according to the present invention, and illustrates selection of a setting / release mode of each operation amount restriction or departure from a setting / release mode of each operation amount restriction. It is a flowchart.

FIG. 3 is an explanatory diagram illustrating an operation amount limiting device for a work machine according to the present invention, and is a flowchart illustrating setting / releasing of a boom height limit;

FIG. 4 is an explanatory diagram illustrating an operation amount limiting device for a work machine according to the present invention, and is a flowchart illustrating setting / releasing of a boom upper limit angle limit;

FIG. 5 is an explanatory diagram illustrating an operation amount limiting device for a work machine according to the present invention, and is a flowchart illustrating setting / releasing of a boom lower limit angle limit;

FIG. 6 is an explanatory diagram illustrating an operation amount limiting device for a working machine according to the present invention, and is a flowchart illustrating setting / releasing of a working radius limit;

FIG. 7 is an explanatory view illustrating a display panel of the working amount limiting device for a working machine according to the present invention, and shows a case where standard display is performed.

FIG. 8 is an explanatory view illustrating a display panel of the working amount limiting device of the working machine according to the present invention, showing a case where a boom height limit display is displayed.

FIG. 9 is an explanatory diagram illustrating a display panel of the working amount limiting device for a working machine according to the present invention, showing a case where a boom upper limit angle limit display is performed.

FIG. 10 is an explanatory diagram illustrating a display panel of the working amount limiting device for a working machine according to the present invention, showing a case where a boom lower limit angle limit display is performed.

FIG. 11 is an explanatory view illustrating a display panel of the working amount limiting device for a working machine according to the present invention, showing a case where a working radius limit display is performed.

FIG. 12 is an explanatory diagram illustrating a display panel of the working amount limiting device for a working machine according to the present invention, showing a case where a hook movement amount is displayed.

FIG. 13 is an explanatory diagram illustrating a crane truck.

FIG. 14 is an explanatory diagram illustrating a conventional operation amount limiting device for a working machine.

FIG. 15 is an explanatory view illustrating a display panel of a conventional operation amount limiting device for a working machine.

[Explanation of symbols]

14B Operation amount restriction selection switch (operation amount restriction setting / release means) 14C Confirmation switch (operation amount restriction setting / release means) 15A Operation state detection means 16A Controller 17A Display means 18 Illustration image display section 19A Boom length display (boom height) 19B Boom hoisting angle display (boom lower limit angle limit display) 19C Jib length display (boom upper limit angle limit display) 19E Work radius display (work radius limit display) 21 Alarm means 22 Regulation means (operation restriction means) 23 Operating amount display

Claims (7)

[Claims] A display means comprising: an illustration image display section of a work machine; and an operation amount display section including a plurality of operation amount displays for displaying the operation amounts of respective parts of the work machine at a plurality of positions corresponding to the illustration image display; Operating state detecting means for detecting the operating state of each part of the working machine, operating amount limit setting / releasing means for setting or canceling the working amount limit value of each part of the working machine, alarm means or operation restricting means for the working machine, Based on the signal detected by the operation state detection means, the operation state of each part of the work machine is displayed as an operation amount display on the operation amount display section, and the operation amount limit value set by the operation amount limit setting / cancellation means is limited. An operation amount limiting device for a working machine having a controller for displaying as a display and outputting a signal to the alarm means or the restriction means when the detected operation amount reaches a set operation amount limit value, Activating an operation amount limit selection switch for selecting an operation amount limit display for setting or canceling an operation amount limit value from a plurality of operation amount displays and a determination switch for setting or canceling the operation amount limit. An actuation amount limiting device for a working machine, wherein the controller is provided with a display function provided in the amount limit setting / release means for receiving a signal from an actuation amount limitation selection switch and blinking the selected actuation amount display. . 2. The operation of the working machine according to claim 1, wherein the controller has a display function for preventing the operation amount or the operation amount limit value from being displayed in the operation amount restriction display that is not selected. Volume limiting device. Display means comprising an illustration image display section of the work machine and an operation amount display section comprising a plurality of operation amount displays for displaying the operation amounts of the respective parts of the work machine at a plurality of positions corresponding to the illustration image display; Operating state detecting means for detecting the operating state of each part of the working machine, operating amount limit setting / releasing means for setting or canceling the working amount limit value of each part of the working machine, alarm means or operation restricting means for the working machine, Based on the signal detected by the operation state detection means, the operation state of each part of the work machine is displayed as an operation amount display on the operation amount display section, and the operation amount limit value set by the operation amount limit setting / cancellation means is limited. An operation amount limiting device for a working machine having a controller that outputs a signal to the alarm unit or the restriction unit when the detected operation amount reaches a set operation limit value. The operation amount limit setting / releasing means is provided with an operation amount limit selection switch for selecting an operation amount limit display for setting an operation amount limit value from the number of operation amount displays, and receives and selects a signal from the operation amount limit selection switch. The controller is provided with a display function of displaying the operation amount or the operation amount limit value on the selected operation amount limit display and not displaying the operation amount or the operation amount limit value on the unselected operation amount restriction display. Working amount limiting device for working machine. 4. The work machine according to claim 1, wherein the controller has a display function of stopping a blinking display of an operation amount restriction display when receiving a signal from the confirmation switch. Working amount limiting device. 5. The operation amount limiting device for a working machine according to claim 3, wherein the controller has a display function of blinking the operation amount restriction display when receiving a signal from the confirmation switch. 6. The work machine is constituted by a crane truck capable of mounting an expandable and contractible jib at a tip end of a boom that can be raised and lowered on a vehicle, and the illustration image is an illustration image of a crane. 6. The method according to claim 1, wherein
An operation amount limiting device for a working machine according to any one of the above. 7. The controller according to claim 6, wherein a working radius and a boom height can be displayed on the operation amount display, and a function of setting or canceling the setting of these operation amount restrictions is provided in the controller. Working amount limiting device for work equipment.