Surroundings monitoring device for slewing-type work machine

Abstract

A slewing-type hydraulic excavator has a plurality of cameras 13 for respectively imaging toward different directions. A view point converting section 21 performs coordinate image data conversion to create overhead view images to look down from an upper position. A composite overhead view image creating section 22 creates a composite overhead view image P arranged around a graphic image of the hydraulic excavator 1 . An interference scope indicating section 25 indicates the scope of potential interference on the overhead view image with a surrounding obstacle at respective ground heights at the time of rotating the hydraulic excavator 1 . A display image creating section 26 produces the composite overhead view image P together with interference scope which is displayed on a monitor.

1 . Surrounding monitoring device for slewing-type work machine which comprises:
 plural number of imaging devices, which are mounted on a slewing-type work machine, for taking images respectively toward downwardly inclined and at different directions;   a view point converting section for performing coordinate conversion of image data taken from respective imaging devices to make overhead view images to look down from upper position;   a composite overhead view image creating section to create a composite overhead view image arranged around symbolized view image of the slewing-type work machine;   an interference scope indicating section to indicate on the overhead view image to cause interference with a surrounding obstacle placed according to the ground height at the time of rotating action of the slewing-type work machine;   a display image producing section to produce the composite overhead view image together with the interference scope on the display image; and   a monitor to display the view image.   
     
     
         2 . Surrounding monitoring device for slewing-type work machine according to  claim 1 , wherein the interference scope indicating section indicates two interference scopes at highest and lowest positions of a rearmost end of a counterweight provided for a hydraulic excavator as the slewing-type work machine. 
     
     
         3 . Surrounding monitoring device for slewing-type work machine according to  claim 2 , wherein the interference scope indicating section indicates further plural number interference scopes between the interference scopes of the highest and lowest positions. 
     
     
         4 . Surrounding monitoring device for slewing-type work machine according to  claim 1 , wherein the slewing-type work machine is a hydraulic excavator, and the interference scope indicating section indicating as the interference scope at ground height of closest portions of a dump truck to transport excavated substance from the hydraulic excavator. 
     
     
         5 . Surrounding monitoring device for slewing-type work machine according to  claim 4 , the dump truck of the closest portion to the hydraulic excavator is a vessel rearmost end or a frame rearmost end of the dump truck. 
     
     
         6 . Surrounding monitoring device for slewing-type work machine according to  claim 5 , the dump truck is constituting plural kind of dump trucks respectively having a wireless communication member, and the interference scope indicating section indicating the different interference scope of the vessel rearmost end or a frame rearmost end corresponding to the kind of the dump truck. 
     
     
         7 . Surrounding monitoring device for slewing-type work machine according to  claim 1 , the display image producing section indicating numeric data of ground height in addition to the interference scope. 
     
     
         8 . Surrounding monitoring device for slewing-type work machine according to  claim 1 , wherein the interference scope indicating section makes adjustment for the displayed position on the composite overhead view image depending upon the difference of height between the slewing-type work machine and the obstacle. 
     
     
         9 . Surrounding monitoring device for slewing-type work machine according to  claim 1 , wherein the display image producing section indicates the interference scope to have a width between upper limit and lower limit in a case of the height of the obstacle being changed.