Leveling device scale

Abstract

This article is a measuring instrument used in a horizontal checking device for checking the horizontality of forks in a reach-type forklift. As shown in the reference perspective view, the horizontal checking device comprises the measuring instrument of this article, a measuring instrument fixing device for fixing to the fork support frame of the forklift, a wire fixing device for fixing a wire to the backrest of the forklift, and a wire for driving the needle of the measuring instrument. The measuring instrument has a main body case, a needle rotatably mounted on the main body case, and a needle drive component fixed to the needle inside the main body case. The wire is inserted inside the cable, with one end fixed to the wire fixing device and the other end fixed to the needle drive component of the measuring instrument. In a reach-type forklift, when the tilt of the forks is changed by an actuator, the tilt of the backrest also changes along with the forks. In contrast, the fork support frame, which supports the entire fork and backrest, is movable up and down along the mast, but its tilt does not change like the forks. Therefore, when the tilt of the forks changes, the position of the backrest relative to the fork support frame is displaced, and this displacement is transmitted to the needle drive component via a wire. As a result, the needle drive component rotates according to the tilt angle of the forks, and the needle rotates together with the needle drive component. The surface of the main case of the scale device has markings that extend radially from the center of rotation of the needle, and the mounting position of the scale device in the scale fixing device is adjusted so that the position of the needle and the position of the scale coincide when the forks are in a horizontal position. This allows the forklift operator to adjust the tilt of the forks so that the position of the needle and the position of the scale coincide, thereby making the forks horizontal.

Images