Bulldozer with sludge scraping devices

The utility model relates to a bulldozer with sludge scraping devices which comprises a trolley, a rack and a caterpillar track. A front sludge scraping device is arranged at the front end of the trolley by a fastener; a sludge scraping slat of the front sludge scraping device is slantingly arranged across the caterpillar track by the whole width; a rear sludge scraping device is arranged at the rear end of a rear axle box of the rack by a fastener; the rear sludge scraping device and an traction frame adopt an integrated structure; and convex antiskid strips are arranged on the inner surface of a scraper of the rear sludge scraping device. According to the utility model, in the traveling process of the bulldozer, sludge and other sundries which are adhered onto the caterpillar track are scraped for twice, the optimal sludge scraping effect can be achieved, the bulldozer has simple structure and is convenient to disassemble and the sludge scraping devices are uniform to wear.