Disclosed is a hydraulic buffer energy storage device for an over-discharged hoist skip in a vertical shaft. The hydraulic buffer energy storage device for an over-discharged hoist skip in a vertical shaft comprises a vertical shaft, where a hoist skip is hung on an inner side of the vertical shaft, and a hydraulic buffer mechanism is arranged on the inner side of the vertical shaft; the hoist skip is positioned above the hydraulic buffer mechanism; the hydraulic buffer mechanism is communicated with an accumulator group, a pressure relief part and an oil replenishing part through an oil pipeline; the accumulator group is communicated with an energy storage part through an oil pipeline; the energy storage part, the pressure relief part and the oil replenishing part are respectively communicated with an oil tank through oil pipelines, the hydraulic buffer mechanism is connected with a displacement sensor.

Supports utilized to stabilize and/or support parked trailers, such as semitrailers parked at loading docks while loading and/or unloading cargo, are disclosed. Some example embodiments may include jacks mounted to repositionable frames, which may be mounted to posts. Some example embodiments may be configured to engage with king pin plates and/or king pins on the undersides of trailers.

Methods, apparatus, systems and articles of manufacture are disclosed for sensing RIG positioning and vehicle restraint movement. An example method includes determining a presence of a RIG and enabling a barrier to move to an operational position when the RIG is present.

Loading dock signal light change indicator apparatuses including a including light sensors that detect a change from illumination of a red signal light to illumination of a green signal light from a loading dock signal light assembly, and that generate one or more detection signals in response to that detected change. The apparatuses may additionally include one or more transmitters that transmit one or more wireless signals in response to the one or more light sensor signals, and a receiver that receives the one or more wireless signals from the transmitter(s). The apparatuses may further include devices that generate one or more audio, tactile, or visual outputs in response to the receiver receiving the one or more wireless signals, and are separate and distinct from the loading dock signal light assembly.

A loading-dock signaling system includes an internal signal light, an external signal light and a wheel chock having a base and a handle extending from the base. A chock signal light is positioned on the handle. The internal signal light, the external signal light and the chock signal light are in signal communication with one another to provide at least a plurality of illuminated indicia to an exterior dock area and an interior dock area. The exterior dock area and the interior dock area are separated by a dock door.

Impact resistant retractable safety barriers are disclosed. An apparatus includes a support member, a flexible elongate member to extend and retract through an opening in the support member, and a stop member including a region to interface with the flexible elongate member. The stop member engages with structure of the support member surrounding the opening to limit a distance with which the flexible elongate member extends through the opening. The stop member cooperates with the structure of the support member to maintain a gap between a surface of the region of the stop member and the structure of the support member. A width of the gap is equal to or greater than a thickness of the flexible elongate member.

Impact resistant retractable safety barriers are disclosed. An apparatus includes a support member, a flexible elongate member to extend and retract through an opening in the support member, and a stop member including a region to interface with the flexible elongate member. The stop member engages with structure of the support member surrounding the opening to limit a distance with which the flexible elongate member extends through the opening. The stop member cooperates with the structure of the support member to maintain a gap between a surface of the region of the stop member and the structure of the support member. A width of the gap is equal to or greater than a thickness of the flexible elongate member.

Systems and methods for monitoring components of a loading dock station that implement a remote monitoring and authorization system are disclosed. The systems and methods can provide information regarding the status of various components of the loading dock station to a remote monitoring and authorization control unit, where a supervisor or the like is capable of reviewing real time information regarding the status of the components and progress through and adherence to a workflow protocol. The systems and methods can also provide for authorization requests to be sent to the remote monitoring and authorization control unit, such as requests to override certain components of the docking station. The user at the remote monitoring and authorization control unit can then grant or deny requests based on status information and other data provided at the remote monitoring and authorization control unit.

A modular repair kit for repairing damaged pallet rack frames and a method of installation thereof which incudes modular elements that can be customized by mechanical process such as cutting, drilling and connecting, for example, by bolts, that avoids major modifications, such as welding, at the installation site. The modular repair kit utilizes a standard replacement post assembly that can be cut to fit into nearly any size gap that is created when the damaged portion of the pallet rack frame is removed. The remaining elements of the repair kit can then be customized to accommodate any size of the standard replacement post assembly.

A modular repair kit for repairing damaged pallet rack frames and a method of installation thereof which incudes modular elements that can be customized by mechanical process such as cutting, drilling and connecting, for example, by bolts, that avoids major modifications, such as welding, at the installation site. The modular repair kit utilizes a standard replacement post assembly that can be cut to fit into nearly any size gap that is created when the damaged portion of the pallet rack frame is removed. The remaining elements of the repair kit can then be customized to accommodate any size of the standard replacement post assembly.