Muffler Draining Apparatus for Working Machine

Abstract

A muffler draining apparatus for a working machine is provided which allows a drain line having excellent heat resistance to be reliably installed, even when a device or equipment is present at the position below a muffler. In a muffler draining apparatus that is provided to a muffler equipped to a hydraulic excavator, and includes a drain line that discharges water accumulated in the muffler to the outside of a vehicle body, the above-described drain line includes a single metal tubing whose one end is connected to the muffler, and whose intermediate portion provided continuous to the one end is extended into the space formed between the muffler and a hydraulic pump located below the muffler. The intermediate portion of the metal tubing includes a single linear portion and plural bent portions. Also, the muffler draining apparatus includes, for example, a single support bracket that is fixed to the muffler, and supports the intermediate portion of the metal tubing.

1 . A muffler draining apparatus for a working machine which is provided in a muffler equipped to the working machine, comprising:
 a drain line that discharges water accumulated in the muffler to the outside of a vehicle body,   wherein the drain line includes a single metal tubing whose one end is connected to the muffler, and whose intermediate portion provided continuous to the one end is extended into a space formed between the muffler and a device or equipment located below the muffler.   
     
     
         2 . The muffler draining apparatus for a working machine according to  claim 1 , wherein the intermediate portion of the metal tubing includes at least one linear portion and at least one bent portion. 
     
     
         3 . The muffler draining apparatus for a working machine according to  claim 2 , wherein the linear portion is provided at least in a horizontal direction. 
     
     
         4 . The muffler draining apparatus for a working machine according to  claim 1 , further comprising at least one support bracket that is fixed to the muffler, and supports the intermediate portion of the metal tubing. 
     
     
         5 . The muffler draining apparatus for a working machine according to  claim 4 ,
 wherein: the support bracket is a single support bracket including a vertically extended portion that is attached to a predetermined device and extended in a vertical direction, and a horizontally extended portion that is provided continuous to the vertically extended portion and extended in a horizontal direction, the horizontally extended portion having an opening opposed to a lower part of the muffler; and   the muffler draining apparatus further comprises at least one holder that is fixed to the support bracket, and holds the intermediate portion of the metal tubing under the horizontally extended portion of the support bracket.   
     
     
         6 . The muffler draining apparatus for a working machine according to  claim 5 , wherein the holder includes at least one first clamp that regulates movement of the intermediate portion of the metal tubing in a direction along a radial direction of the muffler, and at least one second clamp that regulates movement of the intermediate portion of the metal tubing in a direction along an axial direction of the muffler.