| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an earth compaction attachment which can be freely attached to and removed from a hydraulic breaker. SOLUTION: An attachment A is composed by vertically welding a cylindrical body 3 to the back of a rectangular pressing plate 1. A plate 7 is angularly attached to the back of the pressing plate 1 that the earth may not mount on the back (may slip down). The root of the cylindrical body 3 is radially provided with four sheets of reinforcing plates 9, and a spring attaching hole 9a is severally provided on the plates 9. On the other hand, in a hydraulic breaker B to have the attached attachment A four nuts 10 are fixed about a main body (cylinder), and an eye bolt 11 is threadedly engaged in each nut 10. In attaching the attachment A, first the hydraulic breaker B is attached to the tip of an articulated arm of a back hoe through a bracket 15, and next a chisel 5 of the hydraulic breaker is inserted in the cylinder 3 of the attachment A, and a coil spring 13 is drawn out and hung over between the eye of the eye bolt 11 and a spring attaching hole 9a of the attachment A. The tensile force of the spring 13 is adjusted by turning the eye bolt 11.</p> |
