Anti-collision guardrail telescopic device

The utility model relates to an anti-collision guardrail telescopic device which comprises two comb plates and two embedded steel plates which are matched with each other, the embedded steel plates are fixedly connected with anti-collision guardrails on the two sides respectively, the comb plates are fixedly connected with the embedded steel plates on the two sides respectively, and the lower ends of the comb plates are fixedly connected with a main traffic lane comb plate. And tooth seams of the comb plates and expansion joints of the anti-collision guardrail are arranged in a staggered manner. The telescopic device has the advantages that the embedded steel plates are fixedly connected with the anti-collision guardrails on the two sides respectively, the two comb plates matched with each other are fixedly connected with the embedded steel plates on the two sides respectively, the telescopic function is achieved, the lower ends of the comb plates are fixedly connected with the comb plates of the main traffic