The invention provides a hydraulic crawling ladder, and belongs to the field of semitrailer low flatbed trailer rear crawling ladders. The hydraulic crawling ladder comprises a slide block, a horizontal oil cylinder and two crawling ladder bodies. The tail end of a trailer body is provided with at least one transverse slide groove. The slide block is embedded in the slide groove in a sliding mode. The horizontal oil cylinder is transversely arranged. The two ends of the horizontal oil cylinder are connected with the trailer body and the slide block respectively, and the horizontal oil cylinder is used for pulling the slide block to slide in the slide groove. One end of at least one crawling ladder body is hinged to the slide block, a rotating oil cylinder is arranged between the slide block and the crawling ladder body, and the two ends of the rotating oil cylinder are hinged to the slide block and one side of the crawling ladder body respectively. By controlling the extension length of the horizontal oil cylinder, the slide block can horizontally slide in the slide groove, the slide block drives the crawling ladder bodies to move, and then the distance between the two crawling ladder bodies becomes larger or smaller, the distance between the two crawling ladder bodies is automatically adjusted according to different transport device requirements, and the hydraulic crawling ladder can be used for vehicles of various types large in tread change.
Hydraulic crawling ladder
2015-11-04
Patent
Electronic Resource
English
IPC: | B60P Fahrzeuge zum Transport von Lasten oder zum Befördern, Tragen oder Aufnehmen besonderer Lasten oder Gegenstände , VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS |
Crawling ladder structure movably connected to tank truck and crawling ladder thereof
European Patent Office | 2021
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