In a method for transporting a large milling machine self-propelled by ground-engaging units and comprising a machine frame adjustable in height by means of lifting devices using a tractor unit with a fifth-wheel coupling for a semi-trailer couplable behind the tractor unit as seen in the direction of travel, the following steps are specified: a.) positioning the machine frame of the large milling machine for coupling the large milling machine to the fifth-wheel coupling of the tractor unit or to a trailer using the ground-engaging units and/or the lifting devices of the large milling machine, b.) coupling and supporting the machine frame on the fifth-wheel coupling of the tractor unit or on the trailer, c.) repeating steps a) and b) to establish a mechanical connection between the tractor unit and the trailer by means of coupling the tractor unit and the trailer via the machine frame of the large milling machine, d.) using, as a minimum, the machine frame of the large milling machine with the trailer as semi-trailer.

A trailer for transporting a crop harvester header, such as a forage harvester header, after it has been separated from a transport vehicle such as a self-propelled crop harvester. The trailer includes an elongated frame having forward and rearward ends. A first wheel assembly is mounted at the forward end of the frame and a rear wheel assembly is mounted at the rearward end of the frame. The forward end of the elongated frame is hingedly secured to the front wheel assembly so as to be selectively movable between an upper transport position to a lower loading position. The rearward end of the elongated frame is hingedly secured to the rear wheel assembly so as to be selectively movable between an upper transport position to a lower loading position.

A lift and tow module for use with a trailer and method of towing a trailer with a truck. The module has an arm having a connection point for securing to a tow vehicle and a lift body having a connection point for securing the lift body to a trailer. The connection point comprises at least two connection mechanisms spaced apart on the main body for connection to corresponding mechanisms on the trailer. A support plate is extendable from and operably supported by the main body and the lift body is movable in reciprocal directions. Mechanical actuators are operably coupled to the body and the arm for controlling respective movement, which allows the module to jack up a trailer, connect to a trailer, and/or tow a trailer.

A gooseneck trailer system with support structures. The trailer system can comprise a gooseneck removably connected to a trailer and a support structure connected to the gooseneck. The support structure can be configured to support the gooseneck when the gooseneck is disconnected from the trailer. In some embodiments, the support structure can comprise at least one support arm connected to a frame of the gooseneck which can be pivoted between a retracted position and at least one deployed position. The present disclosure can also include methods of using the gooseneck trailer system with a tractor such that the support structure abuts against the tractor, safely securing the gooseneck to the tractor.

A gooseneck extension device that increases the length of the available cargo space on a roll trailer, and enhances the ability to fully utilize the cargo space on a roll on roll off vessel. This results in the ability to carry more cargo per voyage.

A bogie for a lowboy trailer includes a rear suspension support assembly configured to carry a suspension system of the lowboy trailer thereunder and a front transition assembly coupled to a front end of the rear suspension support assembly and configured to couple the rear suspension support assembly to a lower deck of the lowboy trailer. At least a portion of the rear suspension support assembly has a closed cross section when viewed along a longitudinal axis of the rear suspension support assembly. At least a portion of the front transition assembly has a closed cross section when viewed along a longitudinal axis of the front transition assembly.

A trailer assembly suitable for carrying a container of proppant has a frame with a first side rail and a second side rail extending in generally parallel relation to each other and a plurality of wheels rotatably mounted below the frame. The frame has a plurality of cross members extending between the side rails. First and second outriggers extend across the side rails so as to each have one end extending outwardly of one of the side rails and an opposite end extending outwardly of the other side rail. The first and second outriggers are suitable for receiving the container of proppant thereon. The frame has a first section positioned above the wheels and a second section positioned at a level lower than a level of the first section. The proppant container is placed on the first section.

In a method for transporting a large milling machine self-propelled by ground-engaging units and comprising a machine frame adjustable in height by means of lifting devices using a tractor unit with a fifth-wheel coupling for a semi-trailer couplable behind the tractor unit as seen in the direction of travel, the following steps are specified: a.) positioning the machine frame of the large milling machine for coupling the large milling machine to the fifth-wheel coupling of the tractor unit or to a trailer using the ground-engaging units and/or the lifting devices of the large milling machine, b.) coupling and supporting the machine frame on the fifth-wheel coupling of the tractor unit or on the trailer, c.) repeating steps a) and b) to establish a mechanical connection between the tractor unit and the trailer by means of coupling the tractor unit and the trailer via the machine frame of the large milling machine, d.) using, as a minimum, the machine frame of the large milling machine with the trailer as semi-trailer.