Work area setting system

Abstract

A work area setting system includes a first straight line setting part, a second straight line setting part and an area setting part. The first straight line setting part sets a first straight line that is parallel to a motion surface of an attachment in a plan view and passes through a first point at which the tip of an attachment is located with an upper turning body oriented in a first direction. The second straight line setting part sets a second straight line that is parallel to the motion surface in the plan view and passes through a second point at which the tip of the attachment is located with the upper turning body oriented in a second direction different from the first direction. The area setting part sets an area between the first straight line and the second straight line in the plan view as a work area.

1 . A work area setting system for setting a work area in which a work machine makes a work motion, the work machine including a lower traveling body, an upper turning body mounted on an upper part of the lower traveling body capably of turning around a vertical turning center axis, and an attachment attached to the upper turning body capably of rotational movement in a direction along a motion surface that is a plane extending vertically to make the work motion, the work area setting system comprising:
 a first straight line setting part that sets a first straight line, which is a straight line parallel to the motion surface in a plan view in which the work machine is viewed from above and passes through a first point at which a tip of the attachment is located when the upper turning body is oriented in a first direction;   a second straight line setting part that sets a second straight line, which is a straight line parallel to the motion surface in the plan view and passes through a second point at which the tip of the attachment is located when the upper turning body is oriented in a second direction that is different from the first direction; and   an area setting part that sets an area between the first straight line and the second straight line in the plan view as the work area.   
     
     
         2 . The work area setting system according to  claim 1 , wherein the area setting part is configured to set, in a case where both the first point and the second point are located on the same circle centered on the turning center axis in the plan view, an arc that interconnects the first point and the second point along the same circle in the plan view as an outer boundary of the work area with respect to a turning radial direction of the upper turning body. 
     
     
         3 . The work area setting system according to  claim 1 , wherein the area setting part is configured to set an arc-shaped curve, in a case where the first point is located on a first circle centered on the turning center axis whereas the second point is located on a second circle centered on the turning center axis and having a radius different from a radius of the first circle in the plan view, the arc-shaped curve interconnecting the first point and the second point in the plan view as an outer boundary of the work area with respect to a turning radial direction of the upper turning body. 
     
     
         4 . The work area setting system according to  claim 1 , wherein the area setting part is configured to set a third point between the first point and the second point in the plan view and configured to set a first-point-side portion, which is a portion closer to the first point than the third point out of the outer boundary of the work area, based on the position of the first point and set a second-point-side portion, which is a portion closer to the second point than the third point out of the outer boundary of the work area, based on the position of the second point, in a case where the first point is located on a first circle centered on the turning center axis whereas the second point is located on a second circle centered on the turning center axis and having a radius different from a radius of the first circle in the plan view in the plan view. 
     
     
         5 . The work area setting system according to  claim 1 , further comprising a coordinate calculation part that calculates a plurality of coordinates for each of the first point and the second point, the plurality of coordinates including coordinates in a front-rear direction of the upper turning body, coordinates in a vertical direction of the lower traveling body, and coordinates in a turning direction of the upper turning body.