초록 ▼

A scraper comprises a bowl structure having an ejector assembly reciprocally mounted thereon for selectively discharging material forwardly of the bowl structure. In one embodiment of this invention, a guide rail assembly is secured interiorly on each sidewall of the bowl structure to engage a guide

A scraper comprises a bowl structure having an ejector assembly reciprocally mounted thereon for selectively discharging material forwardly of the bowl structure. In one embodiment of this invention, a guide rail assembly is secured interiorly on each sidewall of the bowl structure to engage a guide roller, rotatably mounted on the ejector, for guiding the same during its movements in the bowl. Each guide rail assembly comprises a cylindrical guide rod secured on a respective sidewall by a pair of locating rods disposed on either side of the guide rod and welded between the guide rod and the sidewall. The guide rod is secured to the sidewall of the bowl structure by placing a first linear portion thereof adjacent to the sidewall and then placing first linear portions of the locating rods on either side of the guide rod to space it from the sidewall at a first predetermined distance. This procedure is followed along the entire lengths of the guide and locating rods to compensate for any irregularities that may be formed in the sidewall whereafter the located rods are welded between the guide rod and the sidewall. In a second embodiment of this invention, the guide rail assemblies are secured to a push frame of the bowl structure to engage guide rollers rotatably mounted on a rearward extension of the ejector assembly.

대표청구항 ▼

In a scraper of the type comprising a bowl structure, an elongated guide rail assembly secured on said bowl structure, an ejector assembly reciprocally mounted on said bowl structure for reciprocal movement thereon, and a guide roller rotatably mounted on said ejector assembly and engaging said guid

In a scraper of the type comprising a bowl structure, an elongated guide rail assembly secured on said bowl structure, an ejector assembly reciprocally mounted on said bowl structure for reciprocal movement thereon, and a guide roller rotatably mounted on said ejector assembly and engaging said guide rail assembly for guiding reciprocal movements of said ejector assembly on said bowl structure, the invention wherein said guide rail assembly comprises an elongated guide rod having a first cross sectional area and a pair of elongated locating rods disposed on either side of said guide rod and each having a second cross sectional area substantially less than said first cross sectional area and securing said guide rod to said bowl structure.