Prevent weight type hoisting device

The utility model discloses a prevent weight type hoisting device, which comprises a bracket, the setting the driving motor at support top with set up on the support and the circulation chain belt that is connected with driving motor, it bears the weight of the fill evenly to be fixed with to promote on the circular chain area, evenly be provided with on the support and transversely prevent weighing down the muscle pole, it prevents weighing down the coupler body evenly to be fixed with n shape at the back of circulation chain belt, the back at the circulation chain belt is provided with the cavity, N shape prevent weighing down the coupler body is in in the cavity and inside wall and the cavity of coupler body is prevented weighing down n shape and between be fixed with and support the pressure spring, N shape is prevented weighing down the coupler body and stretch out the cavity under the effect of supporting the pressure spring. The utility model discloses a structure sets up rationally, and it not only ca