A self-locking anti-slip rail braking device is provided. The rail braking device includes a ladder-shaped support, a lifting unit, a roller-and-wedge plate mechanism, a roller support, and a rail clamping unit. The ladder-shaped support is connected under a surface of a balance beam of a port facility, and is connected at a middle part thereof with the lifting unit. A lower end of the lifting unit is hinged to two sides of the roller support. The roller support is provided on an upper end surface thereof with the roller-and-wedge plate mechanism, and is provided at a middle part thereof with the rail clamping unit. An upper end of the rail clamping unit serves as a force application end and is configured to match the roller-and-wedge plate mechanism, and a lower end of the rail clamping unit serves as a rail clamping end corresponding to two lateral sides of a rail.

A self-locking anti-slip rail braking device is provided. The rail braking device includes a ladder-shaped support, a lifting unit, a roller-and-wedge plate mechanism, a roller support, and a rail clamping unit. The ladder-shaped support is connected under a surface of a balance beam of a port facility, and is connected at a middle part thereof with the lifting unit. A lower end of the lifting unit is hinged to two sides of the roller support. The roller support is provided on an upper end surface thereof with the roller-and-wedge plate mechanism, and is provided at a middle part thereof with the rail clamping unit. An upper end of the rail clamping unit serves as a force application end and is configured to match the roller-and-wedge plate mechanism, and a lower end of the rail clamping unit serves as a rail clamping end corresponding to two lateral sides of a rail.

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.

Provided is a crane which can suppress deformation and vibration of a crane structure in travel and stop of the crane. Inverters are installed respectively in travel devices which are arranged on the opposite sides with a gap in a transverse direction. Each of the inverters independently measures a torque generated in a motors to which the inverter is connected and reduces the rotation speed in the command from a controller to the motor such that the greater the measured torque is, the greater a ratio of reduction is.

Provided is a crane which can suppress deformation and vibration of a crane structure in travel and stop of the crane. Inverters are installed respectively in travel devices which are arranged on the opposite sides with a gap in a transverse direction. Each of the inverters independently measures a torque generated in a motors to which the inverter is connected and reduces the rotation speed in the command from a controller to the motor such that the greater the measured torque is, the greater a ratio of reduction is.

A foldable rail-mounted crane stop device includes an actuating device, a slidably fixing device and a braking device. The actuating device is mounted on a crane rail for bearing the pressure of a crane wheel and thereby actuating the braking device, the slidably fixing device is mounted at an end of the crane rail, and the braking device is connected with the slidably fixing device for braking the crane wheel. The device provided by the present invention is used for crane braking at the end of a rail.

A foldable rail-mounted crane stop device includes an actuating device, a slidably fixing device and a braking device. The actuating device is mounted on a crane rail for bearing the pressure of a crane wheel and thereby actuating the braking device, the slidably fixing device is mounted at an end of the crane rail, and the braking device is connected with the slidably fixing device for braking the crane wheel. The device provided by the present invention is used for crane braking at the end of a 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.

A fall arrest anchor trolley for arresting the fall of a user. In one embodiment, the invention can be a system for arresting movement of a worker after falling from an elevated work surface comprising: a rail; a trolley in rollable contact with the rail, the trolley having a body, a brake sub-system, and a plurality of wheels, the brake sub-system comprising 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 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 biasing the brake sub-system into the free state.