A conveying device includes: a main movement body; a main conveying mechanism that conveys the main movement body; and a controlling device that controls operation of the main conveying mechanism including a plurality of winches attached to the main movement body and multiple cables one wound around each winch; each winch includes a cylindrical drum rotatable about an axis line thereof and driving device that rotates the drum, and is wound around corresponding one of the drums of the respective corresponding winches helically in an axis direction of the drums multiple times, and have distal ends supported by supporting bodies corresponding to the respective winches; and the controlling device conveys the main movement body to an arbitrary position on a conveying path between the supporting bodies corresponding to the respective winches by controlling operation of a driving device of each winch disposed on the main movement body.

The invention relates to a bridge that is for use with a scaffolding standard. The standard may comprise of an elongate pipe to which there is secured at least one rosette of a kind that presents a plurality of apertures about the pipe at which a connection to said standard can be established by other scaffolding components. The bridge is capable of connection to said rosette at at least two said apertures, said bridge allowing a scaffolding component to be secured thereto to be positioned and supported by said bridge at a location not catered for by any aperture of said rosette.

There is provided a gondola apparatus including: a horizontal front scaffold frame facing a back of a blade; first and second side scaffold frames each horizontally movably attached to the front scaffold frame; a stabilizing member attached over both sides of the front scaffold frame such that the stabilizing member is extendable and contractable, the stabilizing member abutting on an outer surface of a tower; a first lifting device provided to the front scaffold frame; second and third lifting devices attached to the first and second side scaffold frames, respectively, such that the second and third lifting devices are rockable; first and second drive devices provided to the front scaffold frame, the first and second drive devices being configured to horizontally drive the first and second side scaffold frames, respectively; and first, second, third traction ropes provided between the first, second, and third lifting devices, and an origin on a side of a nacelle, respectively.

An automatic wall adhesion and cleaning system includes a cleaning mechanism for cleaning the outer wall of a building, and a vacuum-based wall adhesion mechanism adherable to the outer wall of the building by a vacuum suction force and adapted for carrying and moving the cleaning mechanism on the outer wall of the building. Thus, the automatic wall adhesion and cleaning system can save labor cost and eliminate the risk of human life due to rupture of the ropes of a hanging cage.

A work gondola comprises a suction attachment device which is mounted on a front portion of the gondola opposing an outer wall of a building, and which couples and fixes the gondola to the outer wall of the building while being attached to the outer wall of the building by suction. The suction attachment device is formed from a first support column extending in a front-rear direction from the front portion of the gondola, a second support column mounted on the front portion of the gondola and extending in a width direction, and a vacuum gripper attached to a distal-end portion of the first support column. The work gondola which can be fixed onto the outer wall of a building to achieve positional stabilization in the air, and which enables accurate and reliable performance of work involved in various construction operations.

The invention relates to a bridge that is for use with a scaffolding standard. The standard may comprise of an elongate pipe to which there is secured at least one rosette of a kind that presents a plurality of apertures about the pipe at which a connection to said standard can be established by other scaffolding components. The bridge is capable of connection to said rosette at at least two said apertures, said bridge allowing a scaffolding component to be secured thereto to be positioned and supported by said bridge at a location not catered for by any aperture of said rosette.

An extendible lateral support arm having at least two elongate arm members coupled together and displaceable relative each other. The first arm defines a first end of the extendible arm. The second arm defines a second end of the extendible arm. The distance between the first end and the second end is variable. The first end presents a first head that can engage a building structure. The second end presents a second head that can be secured to an adjacent structure.

A support platform for enabling a worker to service an oil well next to a wellhead having a valve tree includes a platform having an upper floor, a lower floor and a cavity in between the floors. A platform provides a periphery, a central opening and radially extending beams. A plurality of walls attached to the periphery of the platform, said beams connecting to said walls below said upper floor. A drain that enables fluid to drain from the upper floor to the lower floor and into the cavity. A coupler that spans between the floors for enabling a connection to be made between the platform and valve tree. A liquid guard or other provision that disallows the escape of fluid from a floor via the central opening. One or more sleeves are provided in the cavity, each connecting to the upper floor, each sleeve having a bore that extends to and through the upper floor. Fluid that drains to the cavity is not able to escape the cavity via the sleeve or sleeve bore.