A retracting rail clamp for braking or anchoring a rail-mounted machine such as a crane by clamping opposite sides of a longitudinal rail member, the retracting rail clamp comprising: a load transfer frame rigidly secured to the crane, such as by bolting; and a clamp mechanism suspended within the load transfer frame by at least one lateral pair of pivotally mounted lift levers, and operable through a first and second stage of motion between a raised, brake release position, in which the entirety of the rail clamp is disposed substantially vertically clear of the rail, and a lowered, brake set position wherein at least one opposed facing pair of main levers of the clamp mechanism engage the side surfaces of the rail.

An extended range, consistent force rail brake comprising an adjustable wedge assembly operatively situated between the main power spring(s) and the brake shoe(s) for selectively taking up the vertical distance that the brake shoe is required to travel between the brake release position and an initial railhead contact position. The adjustable wedge assembly is thus selectively expandable in the vertical orientation, and may comprise: an upper block that is operatively connected, either directly or indirectly, to the power spring; a lower wedge rigidly affixed to a replaceable brake shoe; and an intermediate wedge that is located by suitable bearings and/or linkages for transverse, generally horizontal slidable engagement between the upper block and the lower wedge. Each of the upper block and lower wedge elements of the wedge assembly are, respectively, located by suitable bearings and/or linkages for generally vertical translational motion (but very little, if any, lateral or longitudinal horizontal motion) within upper and lower guides provided on a frame of the rail brake.

An extended range, consistent force rail brake comprising an adjustable wedge assembly operatively situated between the main power spring(s) and the brake shoe(s) for selectively taking up the vertical distance that the brake shoe is required to travel between the brake release position and an initial railhead contact position. The adjustable wedge assembly is thus selectively expandable in the vertical orientation, and may comprise: an upper block that is operatively connected, either directly or indirectly, to the power spring; a lower wedge rigidly affixed to a replaceable brake shoe; and an intermediate wedge that is located by suitable bearings and/or linkages for transverse, generally horizontal slidable engagement between the upper block and the lower wedge. Each of the upper block and lower wedge elements of the wedge assembly are, respectively, located by suitable bearings and/or linkages for generally vertical translational motion (but very little, if any, lateral or longitudinal horizontal motion) within upper and lower guides provided on a frame of the rail brake.

The invention discloses a wind protection anchoring system for a bridge crane and a method, wherein the system comprises four wind protection pull rods mounted on the bridge crane and four ground wind protection foundations corresponding to the four wind protection pull rods; the wind protection pull rod comprises a pull rod body, a pull rod nut, a driving device and a lock pin; the pull rod nut is connected to the pull rod body with threads thereon and mounted on the bridge crane; the top end of the pull rod body is fixedly provided with a driven device and the bottom end is connected to a lock pin; a lock pin fixing groove is formed on the ground wind protection foundation, at which mounted a fixing plate opened with a first opening and a second opening; the driving device is driven by the wind protection anchoring control module to enable the pull rod body to descend and enter into the lock pin fixing groove through the second opening, and enable the pull rod body to ascend and being blocked by the first opening to as the bridge crane at the anchorage, thereby fixedly connecting the pull rod body and the ground wind protection foundation.

The invention discloses a wind protection anchoring system for a bridge crane and a method, wherein the system comprises four wind protection pull rods mounted on the bridge crane and four ground wind protection foundations corresponding to the four wind protection pull rods; the wind protection pull rod comprises a pull rod body, a pull rod nut, a driving device and a lock pin; the pull rod nut is connected to the pull rod body with threads thereon and mounted on the bridge crane; the top end of the pull rod body is fixedly provided with a driven device and the bottom end is connected to a lock pin; a lock pin fixing groove is formed on the ground wind protection foundation, at which mounted a fixing plate opened with a first opening and a second opening; the driving device is driven by the wind protection anchoring control module to enable the pull rod body to descend and enter into the lock pin fixing groove through the second opening, and enable the pull rod body to ascend and being blocked by the first opening to as the bridge crane at the anchorage, thereby fixedly connecting the pull rod body and the ground wind protection foundation.

A retracting rail clamp for braking or anchoring a rail-mounted machine such as a crane by clamping opposite sides of a longitudinal rail member, the retracting rail clamp comprising: a load transfer frame rigidly secured to the crane, such as by bolting; and a clamp mechanism suspended within the load transfer frame by at least one lateral pair of pivotally mounted lift levers, and operable through a first and second stage of motion between a raised, brake release position, in which the entirety of the rail clamp is disposed substantially vertically clear of the rail, and a lowered, brake set position wherein at least one opposed facing pair of main levers of the clamp mechanism engage the side surfaces of the rail.

A retracting rail clamp for braking or anchoring a rail-mounted machine such as a crane by clamping opposite sides of a longitudinal rail member, the retracting rail clamp comprising: a load transfer frame rigidly secured to the crane, such as by bolting; and a clamp mechanism suspended within the load transfer frame by at least one lateral pair of pivotally mounted lift levers, and operable through a first and second stage of motion between a raised, brake release position, in which the entirety of the rail clamp is disposed substantially vertically clear of the rail, and a lowered, brake set position wherein at least one opposed facing pair of main levers of the clamp mechanism engage the side surfaces of the rail.

A fall arrest system for arresting the fall of a user. The system may arrest movement of a worker after falling from an elevated work surface. The system may include a rail; a trolley having a body in rollable contact with the rail, a brake sub-system, and a plurality of wheels. The brake sub-system may include a brake rod, a brake pad connected to the brake rod, a lanyard connector connected to the brake rod, and a resilient element. The brake rod may be slidably coupled to the body so that the brake sub-system is alterable between: (1) a free state in which the brake pad is spaced a distance above the rail; and (2) an arrest state in which at least a portion of the brake pad frictionally engages the rail. The resilient element may bias the brake sub-system into the free state.

Electromechanical actuator mechanisms for storm brakes are provided. The actuator mechanisms generally comprise an electro-mechanical release system and a permanent magnet eddy current brake system with adjustable air gap for varying brake setting time, and for energy dissipation of the storm brake main spring force or weight.

Electromechanical actuator mechanisms for storm brakes are provided. The actuator mechanisms generally comprise an electro-mechanical release system and a permanent magnet eddy current brake system with adjustable air gap for varying brake setting time, and for energy dissipation of the storm brake main spring force or weight.