The working devices of liuong grader accessories include scraper, looser and bulldozer, among which looser and bulldozer belong to auxiliary working devices.

Scraper. The earth scraping device is mainly composed of scraper, traction frame, rotary circle, etc., as shown in Figure 2-29. The scraper is composed of a knife body and a blade. The front end of the traction frame is a spherical hinge connected to the front end of the frame, so that the traction frame can rotate and swing in any direction around the ball hinge. The rotary ring is supported on the traction frame, which can rotate around the traction frame under the drive of the rotary drive device, thus driving the scraper to rotate arbitrarily within 360°. On the back of the scraper, there are two sliding rails supported on the sliding slots of the Angle positors on both sides, which can slide laterally under the push of the scraper moving sideways to the oil cylinder. The Angle bracket is hinged to the lower end of the rotary lug plate, and the upper end is fixed with a nut. When loosening the nut, the shoveling Angle can be adjusted.

Use model：grader4180