Copy a keyframe to change the location

[ElmanSH (Elman Sharifov)]

Hi everyone could you please help me.
How to copy the rigs keyframes of the objects to make them move or jumping forward in order to change the location? I made a copy of the Pixar logo animation. All keyframes were put from 0 points
to the letter ''R"yellow road![pixar animation “created keyframes for the table lamp was indicated with the yellow marker on the picture” I would like to use the same keyframes continually move forward the table lamp.