A trailer configured to transport a load includes a bed including an upper surface configured to support the load, a first rotation pin configured to move along a slot in the bed, a second rotation pin coupled to the bed, and a winch assembly positioned in the slot and coupled to the first rotation pin by a first rope. The winch assembly is configured to pull the first rotation pin toward the second rotation pin.

A trailer slider suspension including a tubes and wires support system. The slider includes a frame slidably coupled to and supporting a trailer. The frame includes a cross brace including a pair of overlapping straps to resist twisting. A rotatable shaft is coupled to pins on the frame which are thereby selectively retractable and extendable into the trailer whereby the frame can be moved and fixed along the trailer. Supporting brackets are provided including a central portion and left and right arms extending therefrom. A shaft hole is provided in the central portion and straps openings are provided in each of the arms. The bracket is secured to the frame at a distance from the straps overlap with the rotatable shaft extending through the shaft hole, one of the straps extending through the left arm strap opening and the other strap extending through the right arm strap opening.

A vehicle mounted storage device for the ball mount and spring/torsion bar component of a trailer weight distribution system when the equipment is not in use. The storage device is comprised of a horizontal channel where the spring bars can be inserted, a vertical channel, where the ball mount can be inserted, and a horizontal tongue separating the two channels. When the spring bars are inserted into the horizontal channel with the heads of the spring bars resting on the tongue area and the ball mount is inserted into the vertical channel with the hitch ball directly above the spring bar heads, the spring bars are securely confined to the device. Once a locking device has been affixed to the ball mount, the device deters theft of the spring bars and ball mount.

A vehicle mounted storage device for the ball mount and spring/torsion bar component of a trailer weight distribution system when the equipment is not in use. The storage device is comprised of a horizontal channel where the spring bars can be inserted, a vertical channel, where the ball mount can be inserted, and a horizontal tongue separating the two channels. When the spring bars are inserted into the horizontal channel with the heads of the spring bars resting on the tongue area and the ball mount is inserted into the vertical channel with the hitch ball directly above the spring bar heads, the spring bars are securely confined to the device. Once a locking device has been affixed to the ball mount, the device deters theft of the spring bars and ball mount.

One variation of a system includes a drive subsystem and a controller. The drive subsystem includes: a chassis configured to transiently install on a trailer over a range of longitudinal positions; a set of retention features configured to transiently engage a first subset of engagement features, in a first array of engagement features on a left rail of the trailer and in a second array of engagement features on a right rail of the trailer, to couple the drive subsystem to the trailer in a particular longitudinal position in the range of longitudinal positions; a driven axle suspended from the chassis; and a motor coupled to the driven axle. The controller is configured to: trigger the motor to output torque to the driven axle; and trigger the motor to regeneratively brake the driven axle.

A trailer slider suspension including a tubes and wires support system. The slider includes a frame slidably coupled to and supporting a trailer. The frame includes a cross brace including a pair of overlapping straps to resist twisting. A rotatable shaft is coupled to pins on the frame which are thereby selectively retractable and extendable into the trailer whereby the frame can be moved and fixed along the trailer. Supporting brackets are provided including a central portion and left and right arms extending therefrom. A shaft hole is provided in the central portion and straps openings are provided in each of the arms. The bracket is secured to the frame at a distance from the straps overlap with the rotatable shaft extending through the shaft hole, one of the straps extending through the left arm strap opening and the other strap extending through the right arm strap opening.

A trailer slider suspension including a tubes and wires support system. The slider includes a frame slideably coupled to and supporting a trailer. Axles are pivotally secured to the frame. Air springs are provided between the axles and stop plates on the frame. The air springs include bearing plates abutting the stop plates. The bearing plates include fasteners which extend through corresponding holes in the stop plates. Supporting brackets are secured to the frame with the bearing plates fasteners extending through corresponding securement holes in the brackets and bolts threadingly received thereon, thereby clamping the brackets between the bolts and stop plates. The brackets include support holes wherethrough the tubes and wires are received and supported. A main brace is secured between the stop plates and the frame and side braces are secured between the stop plates and the main brace. The brackets include walls or slots engaging the braces.

A vehicle mounted storage device for the ball mount and spring/torsion bar component of a trailer weight distribution system when the equipment is not in use. The storage device is comprised of a horizontal channel where the spring bars can be inserted, a vertical channel, where the ball mount can be inserted, and a horizontal tongue separating the two channels. When the spring bars are inserted into the horizontal channel with the heads of the spring bars resting on the tongue area and the ball mount is inserted into the vertical channel with the hitch ball directly above the spring bar heads, the spring bars are securely confined to the device. Once a locking device has been affixed to the ball mount, the device deters theft of the spring bars and ball mount.

An automatic auxiliary axle control system is disclosed for a load-transporting motor vehicle having two or more primary axles and one or more auxiliary axles wherein the control system detects a noncompliant axle carrying weight condition when the weight of the vehicle acting on any one of the primary axles exceeds a prescribed maximum allowable axle carrying weight assigned to that axle and also when the weight acting on any group of the axles arranged consecutively exceeds a prescribed maximum allowable axle group carrying weight assigned to that axle group. And the control system on such detection effects auxiliary axle usage that results in no maximum allowable axle carrying weight and maximum allowable axle group carrying weight being exceeded provided the current gross vehicle weight does not exceed a prescribed maximum allowable gross vehicle weight determined by all of the axles and the current center of gravity of the vehicle is located within a certain compliance-manageable range. And with the control system also capable of effecting auxiliary axle usage outside this range suited to the existing condition, providing control over auxiliary axle usage by an operator of the vehicle, and producing useful information.

A method of unloading a structure including a plurality of linear actuators includes extending the plurality of linear actuators to support the structure on the plurality of linear actuators at a first location, retracting the plurality of linear actuators to lower the structure onto one or more crawlers, and sending instructions to the one or more crawlers, receipt of the instructions causing the one or more crawlers to travel across a first surface to carry the structure from the first location to a second location.