Auxiliary joint cleaning device for house building

The utility model discloses an auxiliary joint cleaning device for house building, which comprises a cart, the top end of the right side of the cart is fixedly connected with a fixing block, a threaded rod is in threaded connection with the inside of an internal through hole of the fixing block, the top end of the threaded rod is fixedly connected with a limiting block, and the lower end of the right side of the cart is fixedly connected with a connecting block. The outer portion of the connecting block is in threaded connection with a threaded block, and the right side end of the threaded block is fixedly connected with a scraper. According to the scraper device, the limiting block is rotated to drive the threaded rod to rotate, the threaded rod drives the threaded block in external threaded connection to longitudinally and horizontally move on the surface of the threaded rod in the rotating process, the threaded block can drive the scraper to synchronously move in the moving process, and therefore the use h