Variable-size cast-in-situ bored pile concrete vibrating device

The utility model belongs to the technical field of deep foundation pit support structure construction, and relates to a size-variable cast-in-situ bored pile concrete vibrating device. The variable-size cast-in-situ bored pile concrete vibrating device is provided with a vibrating table arranged over a drilled hole. The vibrating table is fixedly connected with the ring-shaped steel structure bearing platform through a stand column (1); four variable supporting trusses which are uniformly distributed along the circumference are welded on the annular steel structure bearing platform; each variable supporting truss is provided with an inner inserting component and an outer inserting component; one end of the inner inserting component is connected with the annular steel structure bearing platform in a welding manner; the other end of the inner inserting component is connected with the outer inserting component in a sleeved mode and can slide relative to the outer inserting component. The externally-inserted com