초록 ▼

Construction machines have, in some instances been provided with an undercarriage that may be varied in width. The method by which these undercarriages are moved require support personnel, auxiliary equipment and an extensive amount of time to achieve the desired width. The present invention provide

Construction machines have, in some instances been provided with an undercarriage that may be varied in width. The method by which these undercarriages are moved require support personnel, auxiliary equipment and an extensive amount of time to achieve the desired width. The present invention provides an undercarriage of variable gage wherein movement of the undercarriage components, between extreme positions may be obtained in a very timely and efficient manner from within the operator station of the machine.

대표청구항 ▼

A variable gage undercarriage arrangement for a construction machine, comprising: a main frame defining first and second opposing sides, each side defining at least one receptacle opening, said receptacle openings defined by an upper and lower wall and opposing side walls positioned therebetween, sa

A variable gage undercarriage arrangement for a construction machine, comprising: a main frame defining first and second opposing sides, each side defining at least one receptacle opening, said receptacle openings defined by an upper and lower wall and opposing side walls positioned therebetween, said upper and lower walls being spaced from one another a preselected distance; a first subframe having a traction drive means for propelling the machine mounted thereon and at least one beam assembly defined thereon, said beam assembly being slidably mounted within the receptacle defined in the first side of the main frame for relative movement toward and away from said main frame; a second subframe having a traction drive means for propelling the machine mounted thereon and at least one beam assembly defined thereon, said beam assembly being slidably mounted within the receptacle defined in the second side of the main frame for relative movement toward and away from said main frame; at least one hydraulic actuator connected between the first and second subframes and being selectively operable to move the first and second subframes from a first position wherein the respective subframes are spaced from one another a first preselected distance to a second position wherein the respective subframes are spaced from one another a second preselected distance; an abutment member having an angled face being secured to each beam assembly at a location that is substantially centered between the upper and lower walls of a respective receptacle opening, said angled face having a length greater than one half of the preselected distance between the upper and lower walls; and a pair of first stop members secured to the opposing sides of the main frame immediately adjacent a respective receptacle opening, each of said first stop members being positioned at a location that is substantially centered between the upper and lower walls of the respective receptacle opening and having an angled face that is of an angle and length substantially equal to the angled face of the respective abutment members and being sufficient for mating engagement therewith to provide the sole support between the respective subframes and the main frame when the subframes are in their second position.