The bachelor thesis deals with multifunctional auxiliary equipment for excavators for crushing stones and residual concrete, analysis of their needs and analysis of currently used equipment. Some additional devices designed for this issue by KINSHOFER are shown and described in this work. Such devices have a great advantage over their counterparts in other versions, such as stationary crushers, in their flexibility, mobility, space-saving and lower set-up costs. They are an advantageous solution for the processing of relatively small amounts of waste at the point of origin. The use of recycled materials produced this way is economically and above all environmentally advantageous compared to the use of building material from primary production. The work aims to select the most advantageous variant of the device and its concept design.