An apparatus is provided for moving and securing articles in a pickup truck cargo bed. The pickup truck cargo bed may have opposing sidewalls, cab wall, tailgate, and floor. The apparatus comprises a plurality of tracks configured to connect to the pickup truck cargo bed, the plurality of tracks extending substantially along a longitudinal length of the pickup truck cab and defining a channel. A push plate slidably is mounted to the plurality of tracks with a movement member, and the push plate configured to stand perpendicular to the floor. The apparatus also comprises an actuator in mechanical communication with the push plate, the actuator configured to move the push plate to a desired position in the pickup truck cargo bed. An adjustable enclosed area is defined by the push plate, opposing side walls, and tail gate.

An apparatus is provided for moving and securing articles in a pickup truck cargo bed. The pickup truck cargo bed may have opposing sidewalls, cab wall, tailgate, and floor. The apparatus comprises a plurality of tracks configured to connect to the pickup truck cargo bed, the plurality of tracks extending substantially along a longitudinal length of the pickup truck cab and defining a channel. A push plate slidably is mounted to the plurality of tracks with a movement member, and the push plate configured to stand perpendicular to the floor. The apparatus also comprises an actuator in mechanical communication with the push plate, the actuator configured to move the push plate to a desired position in the pickup truck cargo bed. An adjustable enclosed area is defined by the push plate, opposing side walls, and tail gate.

A removable roller tray for use in a pickup truck bed, wherein the tray comprises a base and a handle arranged on an edge of the base. The tray further comprises a plurality of notches arranged on a top surface of the base and a plurality of rollers arranged on a bottom surface of the base. The tray further comprises at least one lanyard connected to a side edge of the base on a first end thereof and a surface of the pickup truck on a second end thereof. The removable roller tray may allow for easy removal of items stored near the front of the pickup truck bed by allowing the removable roller tray to roll out to a predetermined position on the bed and extended tailgate.

A roll-off container is filled with a material at a loading site to produce a filled roll-off container. The filled roll-off container is transported on a transport vehicle to a use site. The filled roll-off container is rolled from the transport vehicle at the use site. The material is used at the use site.

A roll-off container is filled with a material at a loading site to produce a filled roll-off container. The filled roll-off container is transported on a transport vehicle to a use site. The filled roll-off container is rolled from the transport vehicle at the use site. The material is used at the use site.

Exemplary embodiments described in this disclosure generally pertain to vehicle inventory management systems. In one exemplary embodiment, a bed of rollers includes a first section located in an enclosed cargo area of a delivery vehicle and a second section located in an alcove that is accessible from outside the delivery vehicle. Various items for delivery are placed upon the bed of rollers in the enclosed cargo area. The rollers, which are coupled to servomotors, can be rotated in various directions under control of a computer. The computer activates the rollers for moving items around inside the delivery vehicle. Upon reaching a delivery destination, an item can be moved into the alcove for pickup by a person outside the delivery vehicle. The alcove is configured to allow access to the item by the person outside the delivery vehicle, but prevents access to other items located in the enclosed cargo area.

A system for moving payloads is described. It uses one or more mobile robots. Each mobile robot comprises a payload bearing platform with a transfer mechanism with multiple degrees of freedom of movement. The system includes one or more stack exchangers having a set of alignment mechanisms, and at least one payload transfer ramp. The mobile robots pass through the stack exchanger and pick up a payload or drop off a payload.

A system for moving payloads is described. It uses one or more mobile robots. Each mobile robot comprises a payload bearing platform with a transfer mechanism with multiple degrees of freedom of movement. The system includes one or more stack exchangers having a set of alignment mechanisms, and at least one payload transfer ramp. The mobile robots pass through the stack exchanger and pick up a payload or drop off a payload.

An apparatus and process for delivering proppant to a well site has a trailer with a bed thereon and at least one track of rollers extending in parallel relationship to the longitudinal axis of the trailer. The track of rollers extend substantially for an entire length of the bed of the trailer. At least one proppant container is translatably positioned on the track of rollers. The proppant container is movable along the array of rollers from one end of the bed to an opposite end of the bed. A bin can be removably positioned below the bed of the trailer in a position rearward of the front end of the trailer and forward of a rear end of the trailer so as to allow the proppant container to discharge into the bin. A conveyor is cooperative with the bin so as to move proppant from the bin to a location at the well site.

An apparatus and process for delivering proppant to a well site has a trailer with a bed thereon and at least one track of rollers extending in parallel relationship to the longitudinal axis of the trailer. The track of rollers extend substantially for an entire length of the bed of the trailer. At least one proppant container is translatably positioned on the track of rollers. The proppant container is movable along the array of rollers from one end of the bed to an opposite end of the bed. A bin can be removably positioned below the bed of the trailer in a position rearward of the front end of the trailer and forward of a rear end of the trailer so as to allow the proppant container to discharge into the bin. A conveyor is cooperative with the bin so as to move proppant from the bin to a location at the well site.