Front loader

Abstract

A front loader includes a boom to which a bucket is coupled, a bucket cylinder to rock the bucket with respect to the boom, and an indicator to display a rocking state of the bucket. The indicator includes a first structural assembly that is not relatively movable with respect to the bucket cylinder, and a second structural assembly that is relatively movable with respect to the first structural assembly along with rocking of the bucket, and capable of displaying the rocking state of the bucket according to a relative positional relationship with the first structural assembly.

What is claimed is: 
     
         1 . A front loader comprising:
 a boom to which a working tool is coupled;   a working tool cylinder to rock the working tool with respect to the boom; and   an indicator to display a rocking state of the working tool; wherein   the indicator includes:   a first structural assembly that is not relatively movable with respect to the working tool cylinder; and   a second structural assembly that is relatively movable with respect to the first structural assembly along with rocking of the working tool to display the rocking state of the working tool according to a relative positional relationship with the first structural assembly.   
     
     
         2 . The front loader according to  claim 1 , wherein
 the second structural assembly includes:   an interlock that is movable along with rocking of the working tool; and   a display that is provided on the interlock so as to be adjustable in position and to indicate a relative positional relationship with the first structural assembly.   
     
     
         3 . The front loader according to  claim 2 , wherein the interlock has a shaft shape, and the display is slidable in a longitudinal direction of the interlock and to be fixable to the interlock at an arbitrary position. 
     
     
         4 . The front loader according to  claim 3 , wherein the display includes a rotation regulator to regulate rotation about an axis of the interlock. 
     
     
         5 . The front loader according to  claim 2 , wherein
 the interlock is rockably supported by the working tool through a rocking coupler;   the indicator further includes a rocking regulator to regulate rocking of the interlock; and   the rocking regulator is closer to the rocking coupler than the first structural assembly.   
     
     
         6 . The front loader according to  claim 5 , wherein the rocking regulator is in a middle portion in an axial direction of the working tool cylinder. 
     
     
         7 . The front loader according to  claim 1 , further comprising:
 a rocking shaft that rockably couples the working tool cylinder to the boom; wherein   the first structural assembly is supported by the rocking shaft.   
     
     
         8 . The front loader according to  claim 7 , wherein the first structural assembly is restricted from rotating in a circumferential direction about an axis of the rocking shaft by abutting on the working tool cylinder. 
     
     
         9 . The front loader according to  claim 2 , wherein the interlock is structured to attach a plurality of the displays. 
     
     
         10 . The front loader according to  claim 1 , wherein
 the boom includes an attitude retainer to maintain an attitude of the working tool by operating according to rocking of the boom; and   the indicator is installable in a state where the attitude retainer is attached to the boom.   
     
     
         11 . The front loader according to  claim 2 , wherein the display includes a second plate to display a rocking state of the working tool according to a relative positional relationship with a first plate on the first structural assembly.