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.

The invention provides a well rescue device. The well rescue device includes a support assembly, a seating assembly and a gripper assembly. The support assembly includes two holding arms configured to hold the victim. The seating assembly includes an extendable seat rod and a seat attached at an end of the extendable seat rod. The seat is configured to move relative to the extendable seat rod in order to facilitate positioning of the seat relative to the victim. The gripper assembly includes a gripper that is configured to facilitate positioning of the victim relative to one or more of the support assembly and the seating assembly.

The invention provides a well rescue device. The well rescue device includes a support assembly, a seating assembly and a gripper assembly. The support assembly includes two holding arms configured to hold the victim. The seating assembly includes an extendable seat rod and a seat attached at an end of the extendable seat rod. The seat is configured to move relative to the extendable seat rod in order to facilitate positioning of the seat relative to the victim. The gripper assembly includes a gripper that is configured to facilitate positioning of the victim relative to one or more of the support assembly and the seating assembly.

A lifting equipment is provided. The lifting equipment may include a working assembly, a safety assembly, and a shaft assembly. The working assembly may include a working fastener. The working fastener may be spirally connected to the shaft assembly. When the shaft assembly rotates the working fastener may move along the shaft assembly. The safety assembly may comprise a limiting component. The limiting component may be connected to the working fastener. A portion of the safety assembly may be in located a space between the limiting component and the working assembly.

A lifting equipment is provided. The lifting equipment may include a working assembly, a safety assembly, and a shaft assembly. The working assembly may include a working fastener. The working fastener may be spirally connected to the shaft assembly. When the shaft assembly rotates the working fastener may move along the shaft assembly. The safety assembly may comprise a limiting component. The limiting component may be connected to the working fastener. A portion of the safety assembly may be in located a space between the limiting component and the working assembly.

The present disclosure relates to a height accessible working platform. The disclosed working platform generally comprises a frame attachable to a lifting system for being moveable along the vertical axis and suspended thereto; a cradle; a first arm structure having a proximal end terminated to the frame and an distal end attached to the cradle, the first arm structure being extendable and retractable to displace the cradle respectively away from and closer towards one of lateral sides of the frame along a first axis substantially perpendicular to the vertical axis; and a counterweight mechanism mounting at one lateral side of the frame opposing to the cradle, the counterweight mechanism being configured to balance the working platform corresponding to displacement of the cradle along the first axis.

The present disclosure relates to a height accessible working platform. The disclosed working platform generally comprises a frame attachable to a lifting system for being moveable along the vertical axis and suspended thereto; a cradle; a first arm structure having a proximal end terminated to the frame and an distal end attached to the cradle, the first arm structure being extendable and retractable to displace the cradle respectively away from and closer towards one of lateral sides of the frame along a first axis substantially perpendicular to the vertical axis; and a counterweight mechanism mounting at one lateral side of the frame opposing to the cradle, the counterweight mechanism being configured to balance the working platform corresponding to displacement of the cradle along the first axis.

The present application is directed to a tree stand lift system for elevating a person into a tree or other structure. The tree stand lift system includes, in an embodiment, a hunting platform assembly for supporting a person; a hoist assembly positioned above the platform; a hoist cable secured to the hoist assembly and positioned to lift a person from the ground up to the platform.

A safety device including a boom with a primary end and a secondary end, where: the primary end and secondary end are the opposite terminal ends of the boom; the primary end is configured to be, releasably or permanently, attached to a mounting which includes a mounting joint which is a hinge joint; the boom includes a base section, zero or one intermediate section and a load section connected together, in that order, by hinge joints, such that the safety device can extend from a mounting in a single plane, a movement plane, that lies parallel to the longitudinal axis of the boom, the primary end is coterminous with an exposed end, a first base end, of the load section; the load section includes a first load end and a second load end, where the first and second load ends are opposite terminal ends of the load section; the secondary end is coterminous with the second load end; and the second load end includes a connection point, where the connection point is configured to releasably attach a user to the boom via a device with fall arrest capabilities, such that the connection point does not slide lengthwise along the load section.

A safety device including a boom with a primary end and a secondary end, where: the primary end and secondary end are the opposite terminal ends of the boom; the primary end is configured to be, releasably or permanently, attached to a mounting which includes a mounting joint which is a hinge joint; the boom includes a base section, zero or one intermediate section and a load section connected together, in that order, by hinge joints, such that the safety device can extend from a mounting in a single plane, a movement plane, that lies parallel to the longitudinal axis of the boom, the primary end is coterminous with an exposed end, a first base end, of the load section; the load section includes a first load end and a second load end, where the first and second load ends are opposite terminal ends of the load section; the secondary end is coterminous with the second load end; and the second load end includes a connection point, where the connection point is configured to releasably attach a user to the boom via a device with fall arrest capabilities, such that the connection point does not slide lengthwise along the load section.