The trailer generally has a wheeled frame with a coupling at a front end thereof, a moveable component, a power unit driving the movement of the moveable component, the power unit including an electrical motor and a capacitor pack, the capacitor pack being connected for powering the electrical motor, and being connectable to a DC electrical source.

A dumping vehicle includes a vehicle elevation system for elevating a body of a vehicle. The system can use one or more components of a vehicle as a main support against which a vehicle body is elevated. In certain examples, a suspension device of the vehicle can be used as the main support. The system further includes an elevation device arranged between the suspension device and a vehicle frame and configured to elevate the vehicle body by lifting the vehicle frame against the suspension device.

There is disclosed a method of operating a tipper comprising a tipper body pivotably moveable with respect to a frame with a hydraulic cylinder disposed therebetween which can be actuated by a hydraulic actuation system to pivot the tipper body. The method comprises receiving at least one lateral state parameter relating to at least one lateral state of the hydraulic cylinder; determining whether the lateral condition of the hydraulic cylinder is within acceptable limits based on the at least one lateral state parameter; and altering, or permitting the alteration of, at least one operational parameter of the hydraulic actuation system if it is determined that the lateral condition of the hydraulic cylinder is within acceptable limits.

The present invention relates to a construction machine having at least one material receiver that is adjustable by means of at least one hydraulic actuator for unloading, with the required feed pressure for the actuator actuation being able to be provided by a hydraulic circuit of the construction machine and with the feed pressure being able to be limited to a limit pressure by means of at least one pressure limiting device, wherein the construction machine comprises a weighing system for determining the current load weight of the material receiver; and a control for the hydraulic circuit is provided that adapts the limit pressure of the pressure limiting device in dependence on the determined load weight.

A haulage vehicle includes a vessel 3, hoist cylinders 10, a control valve device 16 that controls a supply or discharge of pressurized oil to or from the hoist cylinders 10, a controller 35, and a tilt angle detector 31 that detects a tilt angle of the vessel 3. The controller 35 compares a down assist performing angle, which is a tilt angle preset to determine whether negative pressure control processing needs to be performed for offsetting a force applied in a direction that would cause the hoist cylinders 10 to extend, with the detected tilt angle and, if the detected tilt angle is determined to be equal to or greater than the down assist performing angle, outputs a control valve signal to the control valve device 16 so that the valve is opened to forcibly discharge pressurized oil from the hoist cylinders 10.

A trailer tipper features multi-use tilt sensors for automating leveling and tipping operations. In an example, a computerized method for controlling operation of a trailer tipper is disclosed. The trailer tipper includes a frame at least partially supported relative to a ground surface by a set of outriggers. The trailer tipper further includes a tipping platform that is rotatable relative to the frame about a hinge axis. The computerized method includes a plurality of operations that may be used to at least partially automate leveling and tipping operations.

A rollback dump truck having a chassis, a support frame, a bed frame, and a latching extension. The chassis further having at least one rear axle laterally extending between two sides and a pivotal axis parallel and rearward thereof. The subframe assembly is positioned above and supported by the chassis and is operatively connected thereto at a hinge point aligned with the pivotal axis. The subframe assembly may pivot about the hinge point away from the chassis to positions that include a dump position and a load position. Additionally, the bed frame may slide relative to the support frame in the load position while the load angle is held constant by the latching extension.

A transport deck assembly for a vehicle or trailer that becomes a ramp for loading and unloading. The deck moves rearward while the rear portion of the deck simultaneously tilts toward the ground, creating a ramp. The deck can then return to a transport position. The transport deck assembly includes a transport deck, a base frame, a transport deck support, a linkage, and a hydraulic cylinder.

A trailer lift that that rises to high levels that may tilt for loading and unloading. The trailer lift includes a lift-and-tilt mechanism, a trailer base, and a trailer platform. The lift-and-tilt mechanism includes a lower-strut link, an upper-strut link, a support member, a lower lift cylinder, and an upper cylinder. The lower-strut link and the upper-strut link are pivotably and terminally attached to each other. The support member is positioned offset to the lower-strut link and is pivotably attached to the upper-strut link to guide the upper-strut link. The trailer platform is terminally and pivotably connected to the upper-strut link. Similarly, the trailer base is pivotably and terminally connected to the lower-strut link and the support member. The upper lift cylinder is pivotably mounted in between the upper-strut link and the trailer platform. The lower lift cylinder is pivotably mounted between the upper-strut link and the lower-strut link.

A control system for a dump truck includes a signal reception unit that receives a rising command signal to cause the dump truck including a vessel and a hydraulic cylinder configured to raise and lower the vessel to start a rising action of the vessel, and a vessel control unit that varies an extension speed of the hydraulic cylinder nonlinearly with respect to elapsed time when the signal reception unit receives the rising command signal.