Apparatus for compacting subgrade and pavement materials

A self-propelled road rolling machine for compacting subgrade and pavement materials, characterized by the ability to selectively perform a plurality of distinct road rolling functions, including leveling the underlying material to obtain a smooth surface, or kneading and sealing the underlying material, to thereby facilitate a road building operation, and comprising

• a frame;
• a pair of hard surfaced cylindrical rollers, each having an axial length which substantially corresponds to the width of said frame;
• means mounting one of said cylindrical rollers to said frame adjacent one end thereof for rotation about a transverse, horizontal axis and for pivotal movement about a vertical axis which is fixed with respect to said frame;
• means mounting the other of said cylindrical rollers to said frame adjacent the other end thereof and for rotation about a transverse, horizontal axis which is fixed with respect to said frame;
• a pair of wheel assemblies each comprising a plurality of coaxially aligned and spaced apart resilient wheels;
• means mounting one of said wheel assemblies to said means mounting said one cylindrical roller, and on the outer side of said one cylindrical roller, and for pivotal movement about the horizontal rotational axis of said one cylindrical roller and between a first non-operative position having a ground engaging elevation above that of said one cylindrical roller, and a second operative position having a ground engaging elevation below that of said one cylindrical roller, and whereby said one wheel assembly pivots with said one cylindrical roller about said vertical axis;
• means mounting the other of said wheel assemblies to said frame on the outer side of said other cylindrical roller and for pivotal movement about said fixed horizontal rotational axis and between a first non-operative position having a ground engaging elevation above that of said other cylindrical roller, and a second operative position having a ground engaging elevation below that of said other cylindrical roller;
• means operatively related to said wheel assembly mounting means for pivoting each of said wheel assemblies about its respective horizontal pivotal axis so that each wheel assembly can be selectively raised to its first position and lowered to its second position;
• steering means mounted on said frame for concurrently pivoting said one cylindrical roller and said one wheel assembly about said vertical axis;
• a prime mover mounted to said frame;
• and
• power transmission means mounted on said frame for selectively coupling said prime mover to at least one of said cylindrical rollers and to at least a plurality of said resilient wheels, to thereby propel the machine.

A self propelled road rolling machine for compacting subgrade and pavement material, characterized by the ability to selectively perform a plurality of distinct road rolling functions, including leveling the underlying material to obtain a smooth surface, or kneading and sealing the underlying material, to thereby facilitate a road building operation, and comprising

• a frame;
• a hard surfaced cylindrical roller;
• means mounting said cylindrical roller to said frame and comprising a U-shaped roller support having a base and two parallel sides, bearing means rotatably mounting said roller between said two sides and for rotation about a transverse horizontal axis, and pivot pin means positioned between said frame and the medial portion of said support base for permitting relative rotation between said frame and roller support about a vertical steering axis;
• a wheel assembly comprising a plurality of coaxially aligned and spaced apart resilient wheels;
• means mounting said wheel assembly to said roller support and for pivotal movement about a horizontal pivotal axis parallel to said rotational axis of said cylindrical roller and between a first non-operative position having a ground engaging elevation above that of said cylindrical roller and a second operative position having a ground engaging elevation below that of said cylindrical roller, and whereby said wheel assembly pivots with said cylindrical roller about said vertical axis;
• means operatively related to said wheel assembly mounting means for pivoting said wheel assembly about said horizontal pivotal axis so that the wheel assembly can be selectively raised to its first position and lowered to its second position;
• steering means operatively connected between said frame and said pivot pin means for concurrently pivoting said cylindrical roller and said wheel assembly about said vertical steering axis;
• and
• means mounted to said frame for propelling the machine along the ground.

A self-propelled road rolling machine for compacting subgrade and pavement material, characterized by the ability to selectively perform a plurality of distinct road rolling functions, including leveling the underlying material to obtain a smooth surface, or kneading and sealing the underlying material, to thereby facilitate a road building operation, and comprising

• a frame;
• a hard surfaced cylindrical roller;
• means mounting said cylindrical roller to said frame for rotation about a transverse, horizontal axis which is fixed with respect to said frame;
• a wheel assembly comprising a plurality of coaxially aligned and spaced apart resilient wheels;
• means mounting said wheel assembly to said frame and for pivotal movement about a horizontal pivotal axis parallel to said fixed rotational axis of said cylindrical roller and between a first non-operative position having a ground engaging elevation above that of said cylindrical roller, and a second operative position having a ground engaging elevation below that of said cylindrical roller;
• means operatively related to said wheel assembly mounting means for pivoting said wheel assembly about said pivotal axis so that the wheel assembly can be selectively raised to its first position and lowered to its second position;
• and
• means mounted to said frame for propelling the machine along the ground.