Highway ramp entrance protection device

The invention discloses an expressway ramp protection device, and relates to the technical field of expressway ramp protection. The highway ramp protection device is provided with the base, the energy absorption mechanism, the guide mechanism and the supporting mechanism, and by arranging the energy absorption mechanism and the guide mechanism, when a vehicle collides with the rotary drum in the process of driving on the ramp, the rotary drum assembly rotates, so that the vehicle is prevented from colliding with the rotary drum; the impact force of the rotary drum assembly is converted into force in the tangential direction through rotation of the rotary drum assembly so as to guide a vehicle to run in the extending direction of the road surface, and therefore the situation that the vehicle is seriously damaged after ramp impact is avoided; on the other hand, more serious consequences caused by rollover of the vehicle after collision are prevented. 本发明公开了一种高速公路匝道口防护装置，涉及高速公路匝道口防护技术领域。本发明的高速公路匝道口防护装置设置有底座，吸能机构