Stroke limiting device of small-sized integrated water gate winch type hoist

The utility model discloses a stroke limiting device of a small-sized integrated water gate winch type hoist. The stroke limiting device comprises a box type rack, the screw shaft is axially arranged in the box type rack, and the left end of the screw shaft is connected with a hoist output shaft of a sluice winch hoist through a first gear transmission mechanism; the nut sliding block is arranged on the screw shaft; the first stroke limiting switch mechanism is arranged on the box type rack and is positioned at the left end of the screw shaft; the second stroke limiting switch mechanism is arranged on the box type rack and located at the right end of the screw shaft; the placing door travel switch mechanism is mounted in the box type rack; the opening instrument is arranged on the outer side of the box type rack and close to the right end of the nut sliding block, and the input end of the opening instrument is connected with the right end of the screw shaft through a second gear transmission mechanism. Accord