A nut to be used as part of a fastener to be used in multiple ways in various industries or methods has a drive mechanism and stud extending from the drive mechanism with a threaded bore. In addition the nut can be specifically used as a method and as part of special fastener that can be used to join cut, hard-wood members, other naturally occurring manufactured mat members or synthetically man made members, referred to as “timber(s)” or “laminated”, in forming a mat used for heavy construction equipment to run on over ground which is not stable. These mats are commonly referred to as “Crane Mats” or “Laminated Mats” in the construction, mining, pipeline, and oil and gas industries among others.

A nut to be used as part of a fastener to be used in multiple ways in various industries or methods has a drive mechanism and stud extending from the drive mechanism with a threaded bore. In addition the nut can be specifically used as a method and as part of special fastener that can be used to join cut, hard-wood members, other naturally occurring manufactured mat members or synthetically man made members, referred to as “timber(s)” or “laminated”, in forming a mat used for heavy construction equipment to run on over ground which is not stable. These mats are commonly referred to as “Crane Mats” or “Laminated Mats” in the construction, mining, pipeline, and oil and gas industries among others.

An outrigger control device (A1) includes: a plurality of outriggers (30) that is provided in a traveling body (10) and extendable/contractible between a non-grounding state where the traveling body is not supported and a grounding state where the traveling body is supported; an inclination sensor (310) that is provided in the traveling body and can detect inclination of the traveling body; and a controller (100) that controls an extension/contraction action of each outrigger and acquires a detection signal of the inclination sensor (310). Further, the controller is provided with a grounding determination processing unit (101) that controls the outriggers to perform a predetermined grounding determination action and determines whether or not each outrigger is in the grounding state on the basis of the detected value of the inclination sensor at the time.

A hydraulic crane comprising: —a rotatable column (7); —a crane boom system (10) comprising two or more liftable and lowerable crane booms (11, 13); and—an electronic control device (25), which is configured to prevent an execution of crane boom movements that would make the lifting moment of the crane exceed the maximum allowed lifting moment of the crane, and to continuously establish position information as to the prevailing position of the load suspension point (P) of the crane boom system. When the lifting moment of the crane has reached a limit value at a given level below the maximum allowed lifting moment, the electronic control device is configured to prevent the execution of any combination of crane boom movements that would increase the horizontal distance between the load suspension point and said vertical axis of rotation and at the same time allow the execution of any combination of crane boom movements that keeps said horizontal distance unchanged or reduces said horizontal distance.

A vehicle includes a chassis, a front axle coupled to the chassis, a rear axle coupled to the chassis, and a stability system. The stability system includes a pair of front downriggers coupled to the chassis forward of the front axle and an outrigger assembly coupled to the chassis between the front axle and the rear axle. The outrigger assembly includes a pair of outriggers that are selectively extendable laterally outward at an angle relative to a horizontal.

A vehicle includes a chassis, a front axle coupled to the chassis, a rear axle coupled to the chassis, and a stability system. The stability system includes a pair of front downriggers coupled to the chassis forward of the front axle and an outrigger assembly coupled to the chassis between the front axle and the rear axle. The outrigger assembly includes a pair of outriggers that are selectively extendable laterally outward at an angle relative to a horizontal.

A mat lift is disclosed. In an example, the mat lift may be configured to work with a truck-mounted crane to store and organize a plurality of mat pads. An example of the mat lift includes a channel track that extends rearwardly on a back end of the truck-mounted crane. The example channel track has a downward bend that extends the channel track vertically down a rear surface of the truck-mounted crane. The example channel track also includes a winch or roller that drives a cable or chain in order to move a trolley from a first horizontal end to a second vertical end of the channel track. In an example, the trolley includes a post member configured to receive at least one of the plurality of mat pads thereon.

A mat lift is disclosed. In an example, the mat lift may be configured to work with a truck-mounted crane to store and organize a plurality of mat pads. An example of the mat lift includes a channel track that extends rearwardly on a back end of the truck-mounted crane. The example channel track has a downward bend that extends the channel track vertically down a rear surface of the truck-mounted crane. The example channel track also includes a winch or roller that drives a cable or chain in order to move a trolley from a first horizontal end to a second vertical end of the channel track. In an example, the trolley includes a post member configured to receive at least one of the plurality of mat pads thereon.

A crane mat is disclosed having a plurality of panels of lumber positioned in alternating transverse directions with respect to one another, where the top and bottom panels are oriented parallel to the direction of vehicular traffic. The top and bottom panels may include a plurality of spaced apart grooves extending longitudinally from a first longitudinal end of the crane mat to a second longitudinal end of the crane mat for enhancing traction of a vehicle when traversing across the crane mat by transporting rain or moisture off the mat, or for receiving mud or other debris. The crane mat may include a plurality of edge protectors positioned on respective sides of the crane mat to protect the crane mat from handling damage. In various embodiments, the crane mat may be manufactured using either softwood, hardwood, or any combination of softwood and hardwood.

A crane mat is disclosed having a plurality of panels of lumber positioned in alternating transverse directions with respect to one another, where the top and bottom panels are oriented parallel to the direction of vehicular traffic. The top and bottom panels may include a plurality of spaced apart grooves extending longitudinally from a first longitudinal end of the crane mat to a second longitudinal end of the crane mat for enhancing traction of a vehicle when traversing across the crane mat by transporting rain or moisture off the mat, or for receiving mud or other debris. The crane mat may include a plurality of edge protectors positioned on respective sides of the crane mat to protect the crane mat from handling damage. In various embodiments, the crane mat may be manufactured using either softwood, hardwood, or any combination of softwood and hardwood.