A pair of elongate attachment members, or Z-rails for attaching an end of a trailer crossmember to a flanged beam each include a first end section, an L-shaped portion comprising a horizontal leg and a vertical leg extending from the first end section, and a second end section extending from the vertical leg. The horizontal leg has a bottom surface with a width equal to the distance between the web of the flanged beam and the end of the flange. The vertical leg has an outer surface with a width equal to the width of the end of the flange. The Z-rails are attached to opposite ends of the crossmember to form a subassembly. The subassembly is fixed to and between the flanged beams by welding the first end sections to the web of the corresponding beam, with the horizontal leg on the flange, without directly heating the flange, thereby not diminishing the toughness of the flange.

A trailer configured to lower an overall center of gravity thereof. The trailer comprises a tank, a wheel assembly, a height and a length. The tank comprises a cavity contained within a lower body, a tilted body, a front end and a rear end. The lower body comprises a lower body height, a lower body length, a lower body ground clearance and a lower center of gravity. The tilted body comprises a tilted body ground clearance, a tilted body length, the height and a tilted portion center of gravity. The tank comprises the length, a height equal to the height of the tilted body, and a ground clearance equal to the lower body ground clearance.

A gooseneck trailer having an elevated hopper at the forward end thereof and a deck at the rearward end of the trailer for supporting a vehicle thereon. The hopper has a discharge opening formed in the lower end thereof at one side thereof and a discharge door, which is movable between open and closed positions, selectively closes the discharge opening. Locking devices are provided for locking the discharge door in its closed position.

A trailer for carrying plate glass has an elongated deck and an elongated rigid beam that extends above the deck. The beam supports plate glass transported by the trailer. The deck and the beam may be made from aluminum.

A trailer assembly with improved lateral support structure and steering system control of the axial wheels on a front elongated trailer and a rear elongated trailer to remain in a collinear following configuration to carry elongated loads extending over the extended lengths of the combination of the front elongated trailer and the rear elongated trailer and allow ready turning control.

A torsion gooseneck coupler has a pin box that is designed to be affixed to an existing trailer. The pin box has a pin box torsion end and a lower assembly that each have a corresponding torsion bar. The torsion bars extend outwardly where each affixes to a corresponding torsion arm. The lower assembly is designed to affix to a towing vehicle. The lower assembly has an upper and a lower torsion tube that each has a corresponding torsion bar. The upper torsion arm affixes the upper torsion bar of the pin box assembly to the upper torsion bar of the lower assembly. Correspondingly, a lower torsion arm affixes the lower torsion bars of the pin box assembly to the lower assembly. The torsion tubes and bars resist rotation and cooperate to allow limited movement and provide resistance to forces along the axes of the upper and lower assemblies.

An incinerator transport trailer has a chassis and an incinerator receiving and supporting cradle pivotally attached to the chassis for movement relative to the chassis between a travel position in which the cradle is positioned parallel to and extends along the chassis and a raised position in which the cradle extends generally perpendicular to the chassis. A first incinerator engagement is attached to the cradle toward a first end of the cradle for back-and-forth movement along a direction extending generally between the first and second ends of the cradle. A second incinerator engagement is attached to the cradle toward a second end of the cradle. The first incinerator engagement is movable to increase or decrease a distance between the first incinerator engagement and the second incinerator engagement to removably secure an incinerator to the cradle.

A trailer including a hydraulic steering system includes: a trailer body; a plurality of axles connected to the trailer body; a steering cylinder connected to at least one axle of the plurality of axles and configured to turn the at least one axle; a sensing cylinder; a controller; and a hydraulic steering system. The hydraulic steering system includes a hydraulic circuit including a plurality of hoses and valves, and the steering cylinder is in fluid communication with at least one of the sensing cylinder and the controller. The hydraulic steering system is configured to transition between: (1) an automatic steering mode and (2) a manual steering mode. A towing system and a method of steering a trailer are also disclosed.

A trailer for carrying plate glass has an elongated deck and an elongated rigid beam that extends above the deck. The beam supports plate glass transported by the trailer. The deck and the beam may be made from aluminum.

Embodiments of the present disclosure include a trailer assembly for transporting a plurality of proppant containers along a roadway, and associated methods. The trailer assembly includes a skeletal frame having open areas between structural components to enhance weight reduction of the frame, and first, second, third, and connector sections. Additionally, the frame includes a pair of spaced-apart side rails and three or more wheel and axle assemblies to facilitate movement of the trailer assembly. The trailer assembly includes a first pair of outriggers coupled to and arranged transverse the pair of side rails, and a second pair of outriggers arranged proximate the first pair of outriggers. The outriggers have a coupling element positioned at each distal end to engage and secure a proppant container of the plurality of proppant containers to the trailer assembly. Each distal end is positioned to extend outwardly from an axis of the trailer.