Landing gear uplock mechanism

The utility model discloses a landing gear uplock mechanism which comprises a lock hook, a retaining spring connected with the lock hook, an unlocking rocker arm capable of pushing the lock hook, and an unlocking actuator cylinder for driving the unlocking rocker arm, wherein the unlocking rocker arm comprises a normal unlocking rocker arm, a mechanical unlocking rocker arm and a lock key which are integrated and coaxially rotate; a roller wheel is arranged at the end part of the lock key to push the lock hook. The landing gear uplock mechanism is simple and compact in structure and high in utilization rate; the mechanical unlocking rocker arm is relatively large in applied moment, so that the unlocking is relatively effort-saving and the operability is improved; due to the addition of the roller wheel, the impact of the lock key and the lock hook can be effectively avoided, the friction resistance of the lock key and the lock hook can be remarkably reduced, the lock key can be protected from being damaged, and the maintainability of the mechanism can be improved.