The invention provides an automatic opening and folding mechanism of slope plate, which comprises a folding slope plate, an electric telescopic cylinder and a pressure rod.The folding slope plate at least comprises a first plate body and a second plate body, and a slide rail is arranged on the first side of the first plate body.The electric expansion cylinder has a fixed end and a driving end, and the driving end is slidably arranged on the slide rail by an extension rod.The pressure rod has a fixed end and a driven end.The driven end of the pressure rod is pivoted to the first plate body and the second plate body through a plurality of extension rods.The automatic opening and folding mechanism of the slope plate uses the driving force provided by the electric expansion cylinder to cooperate with the pressure bar, the extension bar and the slide rail to achieve the purpose of automatically unfolding or folding the folded slope plate.本發明提供一種斜坡板自動開折機構，其包括：一折合式斜坡板、一電動伸縮缸以及一壓力桿。所述折合式斜坡板至少包括一第一板體以及一第二板體，且第一板體之第一側設置有一滑軌。所述電動伸縮缸具有一固定端以及一驅動端，其驅動端係藉由一延伸桿可滑動地設置於滑軌上。所述壓力桿具有一固定端以及一從動端。壓力桿的從動端透過複數個延伸桿而樞接於第一板體以及第二板體。斜坡板自動開折機構利用電動伸縮缸提供的驅動力配合壓力桿、延伸桿以及滑軌達到將折合式斜坡板自動展開或收折的目的。
