| 摘要 |
A mechanical system includes a wear part and a support, belonging to the equipment of a construction machine. The support includes a base, a nose which extends from the base along a main axis, and to each side of the base, a housing for receiving a lug of the wear part. The nose includes a first area located near the proximal end of the nose and which includes at least six planar faces arranged in opposite pairs delimiting sections of a first type, and a second area located near the distal end of the nose and which includes at least six planar faces arranged in opposite pairs delimiting sections of a second type, each planar face of the second area being less inclined, relative to the main axis, than the planar face of the first area, which is located in the extension of the planar face in the proximal direction. |
| 主权项 |
1. A mechanical system (1) comprising:
a support (20) of a civil engineering machine bucket (G), the support (20) being comprised of i) a base (22), ii) a nose (30) that extends from the base (22) along a principal axis (X30), and iii) a pair of housings (24) within the base (22), one of said housings (24) on each side of the nose (30) in line with the nose (30), each said housing (24) having an open side in a distal direction (D33) and three closed sides; and a wear part (10) that fits on the nose (30), the wear part having a front distal end with an active part (11), and a rear proximal end with a hollow part (12) and lugs (14) that extent rearward from the hollow part (12), wherein, the nose (30) includes a proximal end (31) close to the base (22) and a distal end (33) opposite to the base (22), the nose has a set of cross-sections (50, 70, 90), in planes perpendicular to the principal axis (X30), where when considered in a proximal direction (D31) from the distal end towards the proximal end, each successive one of said cross-sections delimits an increased or constant area as compared to an area of an immediately preceding one of said cross-sections, and each of the lugs (14) of the wear part (10) is received in a corresponding one of the housings (24) in the base (22), and the nose (30) further comprises: a first zone (40) that is situated in the vicinity of the proximal end (31) of the nose (30) and comprises at least six flat faces (41-48) opposite in pairs (41, 45; 42, 46; 43, 47; 44, 48) delimiting cross-sections of a first type (50), and a second zone (80) that is situated in the vicinity of the distal end (33) of the nose (30) and comprises at least six flat faces (81-88) opposite in pairs (81, 85; 82, 86; 83, 87; 84, 88) delimiting cross-sections of a second type (90), each flat face (81-88) of the second zone (80) being less inclined, with respect to the principal axis (X30), than the flat face (41-48) of the first zone (40) that is situated in line with said flat face (81-88) of the second zone (80) along the proximal direction (D31). |
