| 摘要 |
<p>The present invention provides a cooling apparatus in a re-building welding machine for track rollers comprising: a first contant joint adapted to be screwed to the opening end of a lubrication oil passage bore formed in the shaft of a track roller, said first contact joint having a cooling medium inlet and outlet ports formed therein, a second contact joint for contacting and cooperating with said first contact joint; plunger means for rotatably and axially movably supporting said second contact joint; an intake tube having at its end a valve body adapted to be tightly fitted to the inner surface of said oil passage bore, said intake tube being adapted to be connected to said first contact joint so as to communicate said inlet port; and an intake/exhaust sleeve rotatably fitted around said first contact joint and having an intake terminal and an exhaust terminal communicating said inlet and outlet ports, respectively, wherein the length of said intake tube being so selected that, when said first contact joint is attached to said opening end of said oil passage bore, said valve body is positioned between the branches of said oil passage bore, said branches being for respective axial end bearings of said track roller, whereby a cooling medium is fed through said intake terminal of said intake/exhaust sleeve and circulated through said track roller which is to be re-built by welding.</p> |
