Door lock, door assembly and working machine

The utility model relates to the field of locks, and provides a door lock, a door assembly and an operation machine, which comprise a lock body and a lock hook assembly. The lock body is of a structure protruding towards the direction of the lock hook assembly. The lock hook assembly comprises a first mounting plate and a hook body, the first mounting plate is provided with a shockproof groove which is sunken in the direction away from the lock body, and the hook body is arranged in the shockproof groove. When the lock body is inserted into the shockproof groove, the lock body can be clamped with the hook body, and meanwhile, the lock body is clamped in the shockproof groove. The lock body and the hook body can limit the lock body to move in the first direction away from the lock hook assembly, and the anti-vibration groove can limit the lock body to vibrate in the direction perpendicular to the first direction. According to the door lock provided by the utility model, the shockproof groove is formed, and the