Front loader

Abstract

Provided is a front loader capable of improving visibility. Included are a boom with an internal space formed, and a side frame rockably supporting the boom and formed with a first opening through which a tube portion forming a flow path of hydraulic oil can be inserted, in which the first opening is formed on one side surface of the side frame in a left-right direction, and a second opening through which the tube portion can be inserted is formed on a surface of the side frame facing the boom.

1 . A front loader comprising:
 a boom; and   a side frame rockably supporting the boom and formed with a first opening through which a tube portion forming a flow path for hydraulic oil can be inserted.   
     
     
         2 . The front loader according to  claim 1 , wherein
 the first opening is formed on one side surface of the side frame in a left-right direction.   
     
     
         3 . The front loader according to  claim 2 , wherein
 a second opening through which the tube portion can be inserted is formed on a surface of the side frame facing the boom.   
     
     
         4 . The front loader according to  claim 1 , wherein
 the boom is formed with:
 a third opening that is formed on a surface facing the side frame and through which the tube portion can be inserted; and 
 a fourth opening different from the third opening. 
   
     
     
         5 . The front loader according to  claim 4 , further comprising a coupling frame that couples the boom on a right side and the boom on a left side,
 wherein the tube portion is led out from an inside of the boom to the coupling frame through the fourth opening, branched on the coupling frame, and connected to left and right boom cylinders and left and right bucket cylinders.   
     
     
         6 . The front loader according to  claim 5 , further comprising a first cover that covers the tube portion on the coupling frame. 
     
     
         7 . The front loader according to  claim 6 , wherein
 an opening is formed in the first cover.   
     
     
         8 . The front loader according to  claim 5 , further comprising a second cover that covers the fourth opening. 
     
     
         9 . The front loader according to  claim 4 , wherein
 an attitude maintenance mechanism can be attached to the boom, the attitude maintenance mechanism being configured to maintain an attitude of a working tool coupled to the boom by operating in accordance with rocking of the boom, and   the boom includes:
 an attachment portion at least a part of which is disposed inside the boom and that attaches the attitude maintenance mechanism; and 
 a guide portion at least a part of which is disposed inside the boom and that guides the tube portion so as to avoid the attachment portion. 
   
     
     
         10 . The front loader according to  claim 2 , wherein
 the boom is formed with:
 a third opening that is formed on a surface facing the side frame and through which the tube portion can be inserted; and 
 a fourth opening different from the third opening. 
   
     
     
         11 . The front loader according to  claim 3 , wherein
 the boom is formed with:
 a third opening that is formed on a surface facing the side frame and through which the tube portion can be inserted; and 
 a fourth opening different from the third opening. 
   
     
     
         12 . The front loader according to  claim 10 , further comprising a coupling frame that couples the boom on a right side and the boom on a left side,
 wherein the tube portion is led out from an inside of the boom to the coupling frame through the fourth opening, branched on the coupling frame, and connected to left and right boom cylinders and left and right bucket cylinders.   
     
     
         13 . The front loader according to  claim 11 , further comprising a coupling frame that couples the boom on a right side and the boom on a left side,
 wherein the tube portion is led out from an inside of the boom to the coupling frame through the fourth opening, branched on the coupling frame, and connected to left and right boom cylinders and left and right bucket cylinders.   
     
     
         14 . The front loader according to  claim 12 , further comprising a first cover that covers the tube portion on the coupling frame. 
     
     
         15 . The front loader according to  claim 13 , further comprising a first cover that covers the tube portion on the coupling frame. 
     
     
         16 . The front loader according to  claim 14 , wherein
 an opening is formed in the first cover.   
     
     
         17 . The front loader according to  claim 15 , wherein
 an opening is formed in the first cover.   
     
     
         18 . The front loader according to  claim 6 , further comprising a second cover that covers the fourth opening. 
     
     
         19 . The front loader according to  claim 7 , further comprising a second cover that covers the fourth opening. 
     
     
         20 . The front loader according to  claim 12 , further comprising a second cover that covers the fourth opening.