A fixture is described. The fixture is for detecting distances between a hook assembly and a bell mouth of a rescue hoist and magnetically coupling the hook assembly to the fixture. The fixture couples to the bell mouth such that the fixture is affixed to a main housing of the rescue hoist. A cable of the rescue hoist extends through the bell mouth and the fixture. The cable includes a distal end coupled to the hook assembly. The cable is retractable causing the hook assembly to abut the fixture. The fixture may detect the hook assembly abuts the fixture and engages one or more electromagnets. The electromagnets cause the hook assembly to magnetically couple to the fixture, preventing the hook assembly from swaying when there is slack in the cable.

A fixture is described. The fixture is for detecting forces between a hook assembly and a bell mouth of a rescue hoist. The fixture couples to the bell mouth such that the fixture is affixed to a main housing of the rescue hoist. A cable of the rescue hoist extends through the bell mouth and the fixture. The cable includes a distal end coupled to the hook assembly. The cable is retractable causing the hook assembly to abut the fixture. The fixture may then detect the force. The force may be used to provide an indication to a crew of an aircraft that the force is below a minimum homing load or above a maximum homing load.

A system has a hoist system to lift a payload to a position adjacent to a ceiling of a room. Image sensor systems collect visual data and payload depth data within the payload and ambient depth data within the room. A controller is connected to the hoist system and the image sensor systems. The controller is configured to control the motion of the hoist system. The motion of the hoist system is controlled in part by the ambient depth data from the room.

A rope hoist includes: a rope drum around which a wire rope can be wound; a drum motor for rotating the rope drum; a reduction gear mechanism reducing the rotation of the drum motor and transmitting the rotation to the rope drum; and a control unit controlling driving of the drum motor. The reduction gear mechanism is arranged inside a wall portion provided by being projected from a motor cover of a main body part which is an end frame member supporting the rope drum, a lead wire extended from the drum motor and a cable extended from the control unit are connected via a relay, and the relay is arranged on the outside of the wall portion surrounding the reduction gear mechanism, and housed inside a recess provided on the motor cover.

A system for servicing a pulverizer includes a pulverizer having a housing, a journal assembly pivotally connected to the housing, a grinding mechanism operatively connected to the journal assembly, and an opening within the housing adjacent to the journal assembly and providing an access point to an interior of the housing, and a hoist apparatus mounted to the housing. The hoist apparatus includes a frame assembly received about the opening in the housing, a sheave assembly including a plurality of sheaves supported by the frame assembly, a motor operatively connected to one of the plurality of sheaves, and a cable received by the sheave assembly. The motor is operable to at least one of retract the cable through the sheave assembly to rotate a component out of the pulverizer through the opening and controllably let out the cable to rotate the component into the pulverizer through the opening.

A winding machine wherein a motor control means is able to control driving of a drive motor in a balancer mode, and the balancer mode includes a first balancer mode in which driving of the drive motor is controlled based on a first torque command value with an assist torque that assists the operating force added thereto, and a second balancer mode in which driving of the drive motor is controlled based on a second torque command value that does not assist the operating force, and a lifting/lowering position range is set to a first position range where control is performed in the first balancer mode regardless of the direction of the operating force being in either the winding up or winding down direction, and a second position range where control is performed to select whether control is performed in the first balancer mode or in the second balancer mode.

A Building Element Lift Enhancer is described. The Building Element Lift Enhancer provides for the movement and precise placement of building elements such as blocks or sheet products by one worker. The Building Element Lift Enhancer senses the force applied by a user to the building element and converts that user applied force to mechanically assisted force from the Building Element Lift Enhancer, allowing the user to precisely move and handle large, heavy or bulky building elements by direct interaction with the building element.

A line roller assembly is provided including a base assembly including a clamping assembly configured to clamp the base assembly to a parapet wall surrounding a roof of a structure or other installation, a carriage assembly slidably mounted on the base assembly, said carriage assembly including at least one arm including a roller at a distal end, said carriage assembly movable between at least one extended position and a medial position, and said at least one roller includes a groove configured to receive a line for aiding the line over the parapet wall, wherein in the at least one extended position the at least one arm extends a pre-determined distance over an edge of an outer wall of the structure or the at least one arm extends a pre-determined distance over an inner edge of the parapet wall of the structure over the roof.

A rope hoist includes: a rope drum around which a wire rope W is wound; a support shaft and a limit switch bolt arranged to be parallel to the rope drum; limit switch mechanisms; and a rope guide mechanism moving in accordance with a winding state of the wire rope W, and making the limit switch mechanisms perform on/off operation. Each of the limit switch mechanisms includes: a limit switch metal fitting into which both of the support shaft and the limit switch bolt are inserted, in which the limit switch metal fitting is sandwiched and fixed by nuts from both sides thereof in an axial direction of the limit switch bolt.

A sleeve block includes a frame that is connectable to an object, such as a truss, that is to be moved relative to a stationary support. An axle defining a longitudinal axis and a motor are to the frame. The sleeve block includes a line that has a first end connected to the motor. The line extends downward from the motor around at least a portion of the axle and then extends outwardly of the frame so that at least a portion of the line is operatively connected to the stationary support. The portion of the line between the axle and the stationary support creates a line axis, and the motor is spaced apart from the line axis. Activation of the rotatable output of said motor causes the frame and the object to move relative to the stationary support by retracting or extending the line from the motor.