Apparatus for protecting components of an excavator

A component protection apparatus for an excavator, which protects internal components of an upper swing structure from foreign substances R including pieces of rocks and stones that fall in the rear of a boom during a scratch work of the excavator, the apparatus comprising:

• an upper frame including a boom base that supports a lower portion of the boom, a left center frame that extends from one side of the boom base, and a right center frame extending from the other side of the boom base;
• a left cover support frame installed to extend upwardly from the left center frame;
• a right cover support frame installed to extend upwardly from the right center frame;
• and
• a protective cover body detachably installed on the top surfaces of the left and right cover support frames,
• wherein the protective cover body includes a fitting part coupled to a rear portion of the boom, a damping plate that absorbs an impact during the falling of the foreign substances, and a bottom plate formed on the underside of the damping plate in such a manner s to be contactingly supported on one sides of the top surfaces of the left and right cover support frames.