Plunger limiting device used in shaft

The utility model provides a plunger limiting device used in a shaft, which comprises a sending and placing tool arranged in the shaft, a limiting mechanism arranged at the downstream of the sending and placing tool, a working barrel arranged at the radial inner side, a sleeve arranged at the radial outer side, and a slip arranged at the radial outer side and positioned at the downstream of the sleeve, the working barrel comprises a through hole used for receiving fluid from the interior of the shaft, and a firing pin arranged on the downstream portion of the working barrel and used for abutting against a plunger in the shaft. The plunger can be installed in a shaft, so that the movement stroke of the plunger in the shaft is effectively limited, it is guaranteed that the plunger can be far away from a well mouth, and the situation that the plunger enters a large four-way joint of the well mouth or influences opening and closing of a subsurface safety valve is effectively avoided. 本实用新型提供了种用于井筒内的柱塞限位装置，包括用于设置在