Abstract: A screw jack assembly includes a first body defining a longitudinal axis and a screw drive disposed within the first body. The screw jack assembly also includes a second body movable relative to the first body and coupled to the screw drive, and a first gear coupled to the screw drive. The screw jack assembly further includes a handle assembly having a tube member coupled to the first body. The handle assembly also includes a second gear coupled to the first gear. The handle assembly further includes a handle member coupled to the second gear and adapted to rotate about a rotational axis substantially perpendicular to the longitudinal axis. The handle member is adapted to selectively rotate between an operating position and a stowed position about the longitudinal axis based, at least in part, on rotation of the tube member relative to the first body along the longitudinal axis.

Abstract: A system for attaching a mounting wall of a screed extension to a screed assembly including a first mounting component configured to be engaged within a first receptacle provided on the mounting wall. The first mounting component includes a first fastening member. The system further includes a second mounting component configured to be received within a second receptacle provided on the mounting wall. The second mounting component includes a second fastening member to engage with the first mounting member on the mounting wall and a mounting catch to engage with a mating wall of the screed assembly.

Abstract: A system for attaching a mounting wall of a screed extension to a screed assembly is provided. The system includes a first mounting component configured to be engaged within a first receptacle provided on the mounting wall. The first mounting component includes a first fastening member. The system further includes a second mounting component configured to be received within a second receptacle provided on the mounting wall. The second mounting component includes a second fastening member to engage with the first mounting member on the mounting wall and a mounting catch to engage with a mating wall of the screed assembly.

Abstract: A screw jack assembly includes a first body defining a longitudinal axis and a screw drive disposed within the first body. The screw jack assembly also includes a second body movable relative to the first body and coupled to the screw drive, and a first gear coupled to the screw drive. The screw jack assembly further includes a handle assembly having a tube member coupled to the first body. The handle assembly also includes a second gear coupled to the first gear. The handle assembly further includes a handle member coupled to the second gear and adapted to rotate about a rotational axis substantially perpendicular to the longitudinal axis. The handle member is adapted to selectively rotate between an operating position and a stowed position about the longitudinal axis based, at least in part, on rotation of the tube member relative to the first body along the longitudinal axis.

Abstract: A screed extension for a main screed frame of a paving machine includes an upper frame and a lower frame disposed below the upper frame. A height adjustment system is disposed between, and coupled to, the upper and lower frames. The height adjustment system is configured to moveably couple the lower frame to the upper frame. The height adjustment system includes an upper mounting plate affixed to the upper frame, and a lower mounting plate affixed to the lower frame. The height adjustment system also includes a first tube that is located between and coupled to the upper and lower mounting plates such that a first end of the first tube is configured to establish an interference fit with the upper mounting plate and a second end of the first tube is configured to establish an interference fit with the lower mounting plate.

Abstract: A screed extension for a main screed frame of a paving machine includes an upper frame and a lower frame disposed below the upper frame. A height adjustment system is disposed between, and coupled to, the upper and lower frames. The height adjustment system is configured to moveably couple the lower frame to the upper frame. The height adjustment system includes an upper mounting plate affixed to the upper frame, and a lower mounting plate affixed to the lower frame. The height adjustment system also includes a first tube that is located between and coupled to the upper and lower mounting plates such that a first end of the first tube is configured to establish an interference fit with the upper mounting plate and a second end of the first tube is configured to establish an interference fit with the lower mounting plate.

Abstract: A screed control system includes a controller communicably coupled to a position sensor and at least one of a screed pressure assist system, an extendable screed height system, and a tamper system. The controller is configured to receive a signal indicative of a position of an at least one extendable screed with respect to a main screed. The controller is also configured to determine a change in the position of the at least one extendable screed with respect to the main screed. The controller is further configured to control at least one of the screed pressure assist system, the extendable screed height system, and the tamper system based, at least in part, on the determination.

Abstract: A screed control system for a screed system is provided. The screed control system includes a controller communicably coupled to a position sensor and at least one of a screed pressure assist system, an extendable screed height system, and a tamper system. The controller is configured to receive a signal indicative of a position of an at least one extendable screed with respect to a main screed. The controller is also configured to determine a change in the position of the at least one extendable screed with respect to the main screed. The controller is further configured to control at least one of the screed pressure assist system, the extendable screed height system, and the tamper system based, at least in part, on the determination.

Abstract: A screed control system for a screed system includes a controller communicably coupled to a position sensor and at least one of a screed pressure assist system, an extendable screed height system, and a tamper system. The controller is configured to receive a signal indicative of a position of an at least one extendable screed with respect to a main screed. The controller is also configured to determine a change in the position of the at least one extendable screed with respect to the main screed. The controller is further configured to control at least one of the screed pressure assist system, the extendable screed height system, and the tamper system based, at least in part, on the determination.

Abstract: A screed control system for a screed system includes a controller communicably coupled to a position sensor and at least one of a screed pressure assist system, an extendable screed height system, and a tamper system. The controller is configured to receive a signal indicative of a position of an at least one extendable screed with respect to a main screed. The controller is also configured to determine a change in the position of the at least one extendable screed with respect to the main screed. The controller is further configured to control at least one of the screed pressure assist system, the extendable screed height system, and the tamper system based, at least in part, on the determination.

Abstract: A screed assembly for a paving machine, the screed assembly includes a screed frame, a screed plate attached to the screed frame, a wear plate attached to the screed frame, a tamper bar mounted to the screed frame and configured for up and down reciprocating motion relative to the screed frame, and an eccentric drive mechanism mounted on the screed frame and configured for driving the tamper bar up and down in a reciprocating manner relative to the screed frame. A bottom portion of the tamper bar is configured to slide along the wear plate, which is attached to the screed frame in between the screed frame and the reciprocating tamper bar. The tamper bar includes at least two intersecting chamfered surfaces with different angles from each other and relative to the screed plate at a leading edge of the tamper bar facing in a direction of travel of the paving machine as the paving machine is applying paving material to a surface.

Abstract: A rotary mixer utilizes position control technology to determine the position of the rotary mixer on a work surface and a controller determines whether an intended path across a work surface will overlap with a previously pulverized, mixed and modified surface. The rotary mixer utilizes at least one fluid spray bar in the rotor chamber or mixing chamber that extends along the width of the rotor. The fluid spray bar includes a plurality of nozzles spaced apart along the fluid spray bar that may he individually controlled by a nozzle actuator. In the event such an overlap is occurring or will occur, to avoid the application of excess fluid to the already modified surface, the controller directs the nozzle actuator to either reduce or shut off flow through the nozzles that are in alignment with the already modified surface.

Abstract: A vibration system for a paving machine having a power source and an integrated generator is provided. The vibration system may include a power converter in electrical communication with the integrated generator, a motor drive in electrical communication with the power converter, an electric motor in electrical communication with the motor drive, and a vibratory mechanism operatively coupled to the electric motor and configured to engage at least one of a screed assembly and a tamper assembly.

Abstract: A machine configured to travel across a surface is disclosed. A material removal mechanism is configured to remove material from the surface. A frame supports the material removal mechanism. A conveyor is configured to receive the material and to convey the material to a location off of the machine. A pivotal connection includes connectors connected to the frame and conveyor, respectively, which are configured to mate with one another to allow pivoting of the conveyor relative to the frame.

Abstract: A crawler track machine such as a cold planar milling machine may incorporate a steering system having multiple steering modes including coordinated steering modes as well as an improved crab mode. Orientations of front and rear pairs of crawler tracks may be managed via a linear actuator control system adapted to dynamically adjust lengths of front and rear tie rods. In one disclosed embodiment, the machine may include at least a coordinated four-track steering mode, an independent front track steering mode, and a crab mode. The crab mode may involve use of automated linear actuators on the tie rods to assure that all tracks remain substantially parallel to one another, and may involve the use of lookup tables to coordinate actuator movements in response to individual parallel track angle demands as a function of steering inputs.

Abstract: A machine configured to travel across a surface is disclosed. A material removal mechanism is configured to remove material from the surface. A frame supports the material removal mechanism. A conveyor is configured to receive the material and to convey the material to a location off of the machine. A pivotal connection includes connectors connected to the frame and conveyor, respectively, which are configured to mate with one another to allow pivoting of the conveyor relative to the frame.

Abstract: A mobile machine includes a frame and a support system for supporting the frame from a ground surface underlying the support system. The support system may include a swing member pivotally engaged to the frame. The support system may also include journal structure rigidly attached to the swing member. The support system may further include a strut engaged to the journal structure in a manner allowing rotation of the strut relative to the journal structure about a central axis of the strut. Additionally, the support system may include a ground-engaging component mounted to the strut, the ground-engaging component being configured to move along the ground surface. The support system may also include a steering actuator engaged to the frame and the strut to control rotation of the strut about its central axis and thereby control a steering angle of the ground-engaging device relative to the frame.