JP2011012522A - Monitor device of construction machinery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately and easily determine whether a worker or the like imaged on a monitor screen enters a swing motion area or not, thereby improving operability and safety during swinging work.SOLUTION: A side monitoring camera 10 is installed at the side of an upper swing body 3 swingingly mounted to a lower traveling body 2. A monitor 8 displaying an image photographed by the side-monitoring camera 10 is mounted in a cabin 5. A synthesized-display part 11 is incorporated in the side-monitoring camera 10, so that the synthesized-display part 11 synthetically display an arc-shaped borderline S clearly indicating the swing motion area of the upper swing body 3 on the monitor screen 8A.

Description

  The present invention relates to a monitoring device for a construction machine, and more particularly to a monitoring device for a construction machine capable of operating and operating an upper swing body and a work machine while confirming a turning operation area of the upper swing body on a monitor screen. Is.

  Conventionally, in a construction machine such as this type of hydraulic excavator, an upper swing body is rotatably mounted on a lower traveling body, and a cabin is installed at a front portion of the upper swing body. A driver's seat is provided in the cabin, and a monitor is disposed in front of the driver's seat.

Further, a rear monitoring camera and a side monitoring camera are respectively installed at the rear and side portions of the upper swing body. Then, the rear visual field and the lateral visual field of the upper swing body are photographed by the rear surveillance camera and the side surveillance camera, and the photographed rear visual field and the lateral visual field can be displayed on the monitor screen. Therefore, the operator can operate the upper swing body and the like while confirming the rear view and the side view of the upper swing body on the monitor screen (see, for example, Patent Documents 1 and 2).
Japanese Patent Laid-Open No. 10-140619 JP 2001-140286 A

  According to the conventional monitor device, the operator can check the rear view and the side view of the upper swing body on the monitor screen during the turning operation while sitting on the driver's seat in the cabin. FIG. 4 shows a captured image 22 in which a side view of the upper swing body 20 captured by the side monitoring camera is displayed on the monitor screen 21.

  The worker A is shown in the photographed image 22 in the figure, and the worker A is located on the side of the upper swing body 20. In this case, it is difficult for the operator to accurately determine on the monitor screen 21 whether or not the worker A has entered the turning operation area of the upper turning body 20, that is, the dangerous area.

  As described above, in the conventional monitor apparatus, when an obstacle such as a human, an animal, or a moving object (hereinafter referred to as “a collision object”) is displayed on the monitor screen that displays the rear and side visual fields, It is difficult to accurately determine in advance whether or not the upper swinging body will collide with a human or the like when operating the swinging body etc., and as a result, the operability and safety during the turning work will be reduced. There was a problem to do.

  Therefore, in order to improve the operability and safety at the time of turning work, it is possible to accurately and easily determine whether or not a person or the like in the monitor screen displaying the rear and side visual fields exists in the turning operation area. A technical problem to be solved arises, and the present invention aims to solve this problem.

  The present invention has been proposed in order to achieve the above object, and the invention according to claim 1 is characterized in that a monitoring camera is installed on an upper swinging body that is turnably mounted on a lower traveling body, and the monitoring is performed. In a monitoring device for a construction machine in which a monitor that displays an image taken by a camera is mounted in a cabin, the monitoring camera has a built-in composite display unit, and the composite display unit turns the upper swing body on the monitor screen. There is provided a monitoring device for a construction machine, characterized in that an arc-shaped boundary line that clearly indicates a region can be synthesized and displayed.

  According to this configuration, the side field of view of the upper-part turning body photographed by the monitoring camera is displayed on the monitor screen. In this case, an arc-shaped boundary line that clearly indicates the turning operation area of the upper-part turning body is combined and displayed on the monitor screen by the combination display unit built in the monitoring camera.

  For example, when a person or the like is projected on the monitor screen during the turning operation of the upper-part turning body, whether or not the person or the like has entered the turning operation area with reference to the arc-shaped boundary line synthesized and displayed on the monitor screen It is accurately determined whether or not.

  In the present invention, when a collision object such as a human being, an animal, or a moving object is projected on the monitor screen, whether the collision object exists in the turning motion area with reference to the arc-shaped boundary line of the turning motion area. It is possible to accurately and easily determine whether or not. Thus, the operator can confirm in advance whether or not the upper-part turning body may collide with a person or the like when performing the turning operation, thereby improving the operability and safety during the turning operation. it can.

  It is an object of the present invention to accurately and easily determine whether or not a collision object projected on a monitor screen is located in a dangerous turning area, and to improve operability and safety during turning work. In order to achieve the above, a monitor of a construction machine in which a monitoring camera is installed on an upper swinging body that is turnably mounted on a lower traveling body, and a monitor that displays an image captured by the monitoring camera is mounted in a cabin. In the apparatus, the surveillance camera has a built-in composite display unit, and the composite display unit is configured to be able to compositely display an arc-shaped boundary line that clearly indicates a turning operation area of the upper swing body on the monitor screen. It was realized.

  A preferred embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a construction machine 1 equipped with a monitor device according to this embodiment. The construction machine 1 includes a lower traveling body 2 and an upper revolving body 3 that is pivotably mounted on the lower traveling body 2. A work machine 4 is attached to the front center portion of the upper swing body 3 so as to be vertically rotatable, and a cabin 5 is mounted on one front side of the upper swing body 3. Reference numeral 6 denotes a shoe of the lower traveling body 2.

  A driver's seat 7 is provided in the cabin 5, and an operator sits on the driver's seat 7 and operates operations such as a swing operation of the upper swing body 3 and a swing operation of the work implement 4. Further, a monitor 8 is installed in front of the driver's seat 7, and the monitor 8 displays on the screen images captured by the rear monitoring camera 9 and the side monitoring camera 10.

The rear monitoring camera 9 is installed at the center of the rear end of the upper swing body 3, and the side monitoring camera 10 is installed on the right side of the rear portion of the upper swing body 3. The rear monitoring camera 9 and the side monitor camera 10 photographs the rear-view W ₁ and the side field of view W ₂ of the upper revolving body 3, respectively.

Rear-view W ₁ and the side field of view W ₂ taken with a rear view camera 9 and the side monitor camera 10 is configured so as to be displayed on the screen of the monitor 8. Therefore, the operator operates the turning operation of the upper turning body 3 and the turning operation of the work implement 4 while confirming the rear view W ₁ and the side view W ₂ of the upper turning body 3 on the screen of the monitor 8. can do.

Further, the rear and side monitoring cameras 10 have a composite display unit 11 built therein, and the composite display unit 11 is configured so that the swivel operation area of the upper swing body 3 is compositely displayed on the screen of the monitor 8. . FIG. 2 shows an example in which an image 10A taken by the side monitoring camera 10 is displayed on the monitor screen 8A. A symbol S in the figure indicates an arc-shaped boundary line that clearly indicates a turning operation area of the rear end portion of the upper swing body 3, and the boundary line S is an arc having a turning radius centered on the swing fulcrum of the upper swing body 3. Matches. A symbol T indicates an arc-shaped boundary line that clearly indicates a turning operation area of the work machine at the front end portion of the upper swing body 3, and the boundary line T has a turning radius centered on the swing support point at the front end portion of the upper swing body 3. It coincides with the arc (FIGS. 1, 2, and 3). As a display example of T, if it is set as the maximum working radius (the turning radius length at the maximum front end position that can be taken by the machine), it is considered to be optimal for risk prediction.
Further, the position of the front end portion of the work machine changes at any time depending on the posture of the end attachment of the work machine. If the foremost position according to the posture of the work implement at that time is displayed in real time, the situation at that time can be known in real time (FIG. 5). As an example, if an angle sensor is installed at the joint position of the end attachment of the work machine and processed by a computing machine (controller), the T at the most advanced position at that time can be easily known. If the T is displayed on the monitor as shown in FIG. 5, the situation can be grasped in real time.

  Further, the swivel operation area of the upper swing body 3 is included in the fan-shaped field of view range (see symbol E in FIG. 1) by the side monitoring camera 10. For this reason, the arc-shaped boundary line S that clearly indicates the turning operation area is always displayed in an image taken by the side monitoring camera 10.

  As described above, in this embodiment, the image 10A captured by the side monitoring camera 10 is displayed on the monitor screen 8A, and in this case, the turning operation area of the upper swing body 3 is synthesized and displayed on the monitor screen 8A. Therefore, the operator can identify at a glance whether or not a collision object such as a human exists in the turning operation area of the upper swing body 3 when the upper swing body 3 is turned.

  For example, in the captured image 10A illustrated in FIG. 2, two workers A and B are shown, but the worker A is in the swivel motion region of the upper swing body 3, that is, the arc-shaped boundary line S. Intrusions inside. Therefore, if the upper swing body 3 is swung at this time, the upper swing body 3 collides with the worker A, which is dangerous.

  However, since the operator can confirm in advance on the monitor screen 8A that the operator A has entered the turning operation area of the upper turning body 3, in this case, the collision operation can be avoided by stopping the turning operation. Is done.

  On the other hand, in the captured image 10 </ b> A illustrated in FIG. 3, the worker A has moved outside the turning operation area of the upper turning body 3. In this case, it is safe to rotate the upper swing body 3. Therefore, the operator can efficiently perform the turning work by continuing the turning operation.

  As described above, according to the present invention, the image 10A taken by the side monitoring camera 10 is displayed on the monitor screen 8A, and the monitor screen 8A has an arcuate boundary that clearly indicates the turning operation area of the upper turning body 3. The line S is compositely displayed. Therefore, when an operator or the like is displayed in the captured image 10A of the monitor screen 8A, it is easy and accurate whether or not the operator or the like is present in the turning operation area with reference to the arc-shaped boundary line S. Can be confirmed.

  Thus, the operator can know in advance whether or not there is a possibility of colliding with the operator or the like displayed in the monitor screen 8A when the upper swing body 3 is swung. The operability and safety are significantly improved.

  The present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified one.

The top view of the construction machine which shows one Example concerning this invention and mounts the monitor apparatus. Explanatory drawing which shows the image example of the monitor screen which displayed the visual field which concerns on one Example. Explanatory drawing which shows the other example of a monitor screen which displayed the visual field which concerns on one Example. Explanatory drawing which shows an example of the monitor screen which displayed the visual field which concerns on a prior art example. The figure which shows an example of a machine posture figure and monitor screen in case the foremost end position by the working machine attitude | position which concerns on one Example changes.

DESCRIPTION OF SYMBOLS 1 Construction machine 2 Lower traveling body 3 Upper turning body 5 Cabin 8 Monitor 9 Rear surveillance camera 10 Side surveillance camera

Claims (4)

  In the monitoring device of a construction machine, a monitoring camera is installed on an upper swinging body mounted on a lower traveling body so as to be capable of turning, and a monitor for displaying an image taken by the monitoring camera is mounted in a cabin. A construction machine characterized in that a composite display unit is built in the camera, and the composite display unit can compositely display an arc-shaped boundary line that clearly indicates a turning operation area of the upper-part turning body on the monitor screen. Monitoring device.   The monitoring apparatus for a construction machine according to claim 1, wherein the upper swing body is configured such that a swing operation area of a rear end portion of the upper swing body is clearly shown on the monitor screen.   The monitoring device for a construction machine according to claim 1, wherein the upper swing body is configured such that a swivel operation area at a front end of the upper swing body is clearly shown on the monitor screen.   4. The monitoring device for a construction machine according to claim 3, wherein the swivel operation area of the upper swing body is configured to change in real time according to the attitude of the upper swing body.

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