A method and apparatus to invert a robotic arm, includes an angling adaptor and swing arm. The angling adaptor includes a truck or crane boom head adaptor and a hinge coupler. The swing arm extends downwardly from the angling adaptor and may include a boom adaptor arm and a jib. The lower end of the swing arm is mounted to the main beam of the robotic arm. The hinge coupler mounts to the upper end of the crane or truck boom. The robotic arm is mounted on the swing arm so as to downwardly orient the insulators on the robotic arm. A lowermost end of each insulator is adapted for releasably holding an electrical bypass which may include a bus bar and electrical cable jumpers.

Disclosed is a chuck disassembly and transfer device, which is composed of a telescopic cylinder, a cylinder support, a second linear guide rail, a second guide rail sliding seat, a lifting support, a chuck, a lifting chain, a lifting cylinder and the like, wherein the cylinder support and the second linear guide rail are fixed on the frame, the lifting support is connected with the second linear guide rail via the second guide rail sliding seat, and the telescopic cylinder is capable of driving the lifting support and the chuck to move horizontally along the second linear guide rail; the lifting cylinder is fixed on the lifting support, the chuck is connected with an output shaft of the lifting cylinder via the lifting chain, and the lifting cylinder is capable of driving the chuck to move vertically.

Disclosed is a chuck disassembly and transfer device, which is composed of a telescopic cylinder, a cylinder support, a second linear guide rail, a second guide rail sliding seat, a lifting support, a chuck, a lifting chain, a lifting cylinder and the like, wherein the cylinder support and the second linear guide rail are fixed on the frame, the lifting support is connected with the second linear guide rail via the second guide rail sliding seat, and the telescopic cylinder is capable of driving the lifting support and the chuck to move horizontally along the second linear guide rail; the lifting cylinder is fixed on the lifting support, the chuck is connected with an output shaft of the lifting cylinder via the lifting chain, and the lifting cylinder is capable of driving the chuck to move vertically.

A holding device for use with a telescopically extensible crane boom (57) in order to keep a load handling tool (4) in a given parking position in relation to the crane boom. The holding device (1) comprises: an attachment (10) to be fixed to an end of a telescopic crane boom section of the crane boom; a tool holder (15), which is detachably mountable to the attachment (10) and configured for engagement with the tool in order to support it against the crane boom and keep it in the parking position, the tool holder being provided with a sliding member (28), through which the tool holder is configured to slidably rest against an external surface on the crane boom; and a locking mechanism (16) for locking the tool holder and the attachment to each other when the tool holder is mounted to the attachment.

A holding device for use with a telescopically extensible crane boom (57) in order to keep a load handling tool (4) in a given parking position in relation to the crane boom. The holding device (1) comprises: an attachment (10) to be fixed to an end of a telescopic crane boom section of the crane boom; a tool holder (15), which is detachably mountable to the attachment (10) and configured for engagement with the tool in order to support it against the crane boom and keep it in the parking position, the tool holder being provided with a sliding member (28), through which the tool holder is configured to slidably rest against an external surface on the crane boom; and a locking mechanism (16) for locking the tool holder and the attachment to each other when the tool holder is mounted to the attachment.

A portable gantry crane formed of composite members includes a composite material I-beam. Two or more support members are formed of a composite material and each support member supports the I-beam when the portable gantry crane is in an upright position. Two or more end housings are included, each end housing enclosing a top end of one of the two or more support members and coupled thereto using adhesive. A plurality of latch structures are coupled with the I-beam, each latch structure including a latch, and each end housing having a latch receiver, each latch in combination with a latch receiver allowing one of the latch structures to be releasably fixedly coupled with an end housing. In implementations a plurality of latch structures are coupled with the I-beam, each latch structure having a latch structure enclosure and each latch structure enclosure at least partially enclosing one of the end housings.

An extendable needle davit assembly has an extendable beam comprising a fixed beam portion, and a telescopic beam portion slidably receivable within a distal end of the fixed beam portion. An intermediate lateral bracing frame holds the extendable beam at an angle. The fixed beam portion is a single-piece construction, and a proximal end of the fixed beam portion is anchored. An upper end of the bracing frame is attached to a distal attachment point of the fixed beam portion, such that a distal portion of the fixed beam portion extends beyond the bracing frame. A lower portion of the bracing frame is attached to a proximal attachment point of the fixed beam portion by means of a rear brace.

An extendable needle davit assembly has an extendable beam comprising a fixed beam portion, and a telescopic beam portion slidably receivable within a distal end of the fixed beam portion. An intermediate lateral bracing frame holds the extendable beam at an angle. The fixed beam portion is a single-piece construction, and a proximal end of the fixed beam portion is anchored. An upper end of the bracing frame is attached to a distal attachment point of the fixed beam portion, such that a distal portion of the fixed beam portion extends beyond the bracing frame. A lower portion of the bracing frame is attached to a proximal attachment point of the fixed beam portion by means of a rear brace.

A boom section for the boom of a telescopic crane has a lower shell and an upper shell. The lower shell and the upper shell are welded to one another, and the weld seam extends between the lower shell and the upper shell angled in at least one region to at least one section edge of the boom section.

A boom section for the boom of a telescopic crane has a lower shell and an upper shell. The lower shell and the upper shell are welded to one another, and the weld seam extends between the lower shell and the upper shell angled in at least one region to at least one section edge of the boom section.