A flip door assembly includes a flip door and an interlock that controls whether the flip door may be opened. A worker safety system in one embodiment includes a work stand, a safety barrier, and a flip door assembly. The flip door assembly selectively engages with a keyed portion of the safety barrier to prevent access to a defined area by a worker. The flip door assembly includes a flip door having a top surface that is substantially planar to a top surface of the work stand when closed, and substantially non-planar to the top surface of the work stand when open. The flip door assembly further includes an interlock that prevents the flip door from opening when the keyed portion of the safety barrier is disengaged from the interlock, and allows the flip door to open when the keyed portion of the safety barrier is engaged with the interlock.

A work platform includes a frame and a deck. The frame has a plurality of frame members that are interconnected. The frame members define a trough that extends a length of the frame and is configured to accommodate a refueling boom of an aircraft such that the refueling boom extends through the frame within the trough. The deck is mounted to the frame to provide a stand. The deck includes a first deck panel and a second deck panel spaced apart from each other to define an opening to the trough.

A work platform includes a frame and a deck. The frame has a plurality of frame members that are interconnected. The frame members define a trough that extends a length of the frame and is configured to accommodate a refueling boom of an aircraft such that the refueling boom extends through the frame within the trough. The deck is mounted to the frame to provide a stand. The deck includes a first deck panel and a second deck panel spaced apart from each other to define an opening to the trough.

Improvements in scaffold for providing an elevated structure for working or support. The scaffolding system includes an adjustable stabilizer that uses telescoping tubing with locking pins that fix the length of the stabilizer. An access gate provides both access to inside the elevated structure and safety to prevent a person from falling out of a scaffold opening that is secured to the frame of the scaffold. A variety of toe board brackets are configured to be installed on any standard, mid-rail or end frame of the scaffolding depending on the side or corner that is required. A double toe board that allows for a nearly infinite length of scaffolding to provide a protective barrier that is placed near the ground or walking surface of the scaffold working platform. The scaffolding system can be quickly and universally installed and with minimal or no tools in a variety of configurations.

The present disclosure relates systems and methods involving movable/adjustable platforms and/or guardrails. An example system includes a bracket configured to be coupled to a fixed structure having a walking surface. The system also includes a flip door portion rotatably coupled to the bracket and a guardrail portion rotatably coupled to the flip door portion. The system includes a linkage further coupling the flip door portion to the guardrail portion. The system yet further includes an actuator configured to controllably adjust a configuration of the flip door portion, the linkage, and the guardrail portion between an extended configuration and a retracted configuration with respect to the walking surface.

The present disclosure relates systems and methods involving movable/adjustable platforms and/or guardrails. An example system includes a bracket configured to be coupled to a fixed structure having a walking surface. The system also includes a flip door portion rotatably coupled to the bracket and a guardrail portion rotatably coupled to the flip door portion. The system includes a linkage further coupling the flip door portion to the guardrail portion. The system yet further includes an actuator configured to controllably adjust a configuration of the flip door portion, the linkage, and the guardrail portion between an extended configuration and a retracted configuration with respect to the walking surface.

A method and apparatus for supporting collaborative robots and humans in a narrowing work envelope. A base platform is provided, and a work platform is positioned above the base platform for supporting one or more humans, wherein the work platform is narrower than the base platform, and the work platform is positioned relative to the base platform to provide areas for positioning one or more robots on one or more sides of the work platform. The robots are supported on the base platform independently of the work platform, so that movement of the work platform does not affect the robots' positions.

A method and apparatus for supporting collaborative robots and humans in a narrowing work envelope. A base platform is provided, and a work platform is positioned above the base platform for supporting one or more humans, wherein the work platform is narrower than the base platform, and the work platform is positioned relative to the base platform to provide areas for positioning one or more robots on one or more sides of the work platform. The robots are supported on the base platform independently of the work platform, so that movement of the work platform does not affect the robots' positions.

A modular guard rail for construction scaffolding includes first and second vertical support members and horizontal rails defining a guard rail frame. Support brackets are provided for engaging respective vertical posts of the construction scaffolding and a horizontal supporting strut of the construction scaffolding.

A modular guard rail for construction scaffolding includes first and second vertical support members and horizontal rails defining a guard rail frame. Support brackets are provided for engaging respective vertical posts of the construction scaffolding and a horizontal supporting strut of the construction scaffolding.