Locking head apparatus of dual automatic locking protective door bar

A locking head apparatus of a dual automatic locking protective door bar, comprising a housing, a first toggling button, a sliding seat, a fixation seat, a linkage locking mechanism and a rotating mechanism, the first toggling button being fixedly mounted on the sliding seat and exposed outside the housing, the sliding seat being mounted on the fixation seat and slidably connected to the fixation seat, and the rotating mechanism being mounted inside the housing and being adopted to connect to a reel subassembly;

• a hydraulic rod capable of retracting regularly being mounted inside the fixation seat, and the hydraulic rod being connected to the sliding seat to realize automatic resetting of the first toggling button;
• further comprising a second toggling button, the second toggling button being exposed on the housing and connected with a toggling button seat, the toggling button seat being mounted inside the housing through a first spring, thereby forming an automatic resetting mechanism;
• the toggling button seat being fixedly provided with a locking block, a limiting seat being arranged opposite to the locking block, and the limiting seat being fixedly connected to the sliding seat;
• a limiting block opposite to the locking block being arranged on the limiting seat, wherein, when the second toggling button is in a locked state of the second locking mechanism, the locking block is in front of the limiting block to prevent the limiting block from sliding forward and accordingly prevent the protective door bar from being unlocked;
• and when the second toggling button moves to an unlocked state of the second locking mechanism, the locking block and the limiting block are mutually staggered and the locking block fails to prevent the limiting block, in this way the limiting block slides forward and accordingly the protective door bar is unlocked.