| 摘要 |
PROBLEM TO BE SOLVED: To provide a two-directional width control grating assembly. SOLUTION: A two-directional band width control grating assembly 60 is provided. A spring housing is connected to one of two end plates 2 which extend away from the line surface of a grating 1. An adjustment rod 4 threaded via the other end plate is extended within the spring housing. A compression spring 11, mounted between a pressure surface within the housing and a piston fixed to the rod 4, is provided within the housing. By rotating the rod in a direction toward the inside of the housing having a spring to be pushed to separate the end plates, a recess on the line surface of the grating 1 can be enlarged (or protrusion can be made smaller), and by rotating the rod in the outward direction of the housing having another spring to push the end plates toward each other, the protrusion (or the recess) of the surface can be enlarged (or be made smaller). |
