Easy-to-maintain frame-type energy-absorption structure

An easy to maintain frame typo energy-absorption structure, comprising:

• a fixing frame,
• an anti-climber arranged in front of the bottom of the fixing frame,
• an energy absorption block detachably connected with the fixing frame and the anti-climber respectively,
• a connecting device for hinging the anti-climber and the fixing frame, and
• shear pins which are respectively arranged at a junction of the connecting device and the fixing frame and a junction of the connecting device and the anti-climber;
• wherein the connecting device comprises:
• first hinging devices that are arranged at both ends of the anti-climber, and hinge the anti-climber to both ends of the fixing frame;
• and each of the first hinging devices comprises a first convex portion which is arranged at the bottom of the fixing frame, and a first hinge which is respectively hinged to the first convex portion and the anti-climber;
• and
• wherein the first hinge comprises a first hinging portion and a second hinging portion that are sequentially arranged between the fixing frame and the anti-climber;
• the first hinging portion comprise two U-shaped grooves with openings facing opposite directions, and a first connection portion for connecting the bottoms of the two U-shaped grooves;
• and the first convex portion matches with the U-shaped groove, and a top surface and a bottom surface of the first convex portion contact with the side walls of the U-shaped groove.