Abstract:
An electromagnetic safety trigger 46 includes a link 72 kinematically connected to a safety 70A, 70B of an elevator system mass, such as an elevator car or counterweight. An electromagnet 76 mounted on a linear actuator 74 is magnetically coupled to the link 72, and a spring 78 is connected between the link 72 and the elevator mass. The electromagnet 76 can be triggered to release the link 72, which allows the spring 78 to move the link 72 to engage the safety 70A, 70B.
Abstract:
An exemplary elevator system comprises a machine support (30) including a first portion (32) situated in a generally horizontal position at least partially within a hoistway (24). A second portion (34) is oriented generally perpendicular to the first portion. The second portion has one end supported by a support surface (52) adjacent the hoistway such that a portion of a load of the machine support is transferred to the support surface. One end of the first portion (32) is supported by the second portion (34) and another end of the first portion is supported by a structural member at least partially in the hoistway such that a remainder of the load of the machine support is transferred to the structural member.
Abstract:
An exemplary tension device for maintaining a desired amount of tension on a traction and load bearing assembly that supports and moves an elevator car includes an anchor member configured to be secured in a fixed position in a hoistway. At least one sheave is rotatably supported on the anchor member. A lever has a first end pivotally supported for movement relative to the anchor member. A mass is at least partially supported by the lever near a second end of the lever. At least one termination is configured to secure an end of at least one portion of the traction and load bearing assembly relative to the lever. The termination is supported on the lever between the first end and the mass.
Abstract:
An elevator door moving arrangement includes a door mover (40) and an interlock device (42) supported near a lower edge (44) of cabin doors (26). The strategic position of the door mover (40) and the interlock device (42) minimizes the distance between the sill member (34, 78) and the operative components for moving the doors. In one example, the entire door mover assembly and the interlock are located beneath a sill member (34), which is beneath the bottom edge of the doors (26).
Abstract:
A brake (26) for machine (16) and method of using the brake (26) is disclosed. The brake (26) may comprise first and second brake linings (38) configured to be frictionally engageable with a rail (14), a first biasing member (34) configured to urge the first brake lining (38) to engage the rail (14), and a first actuator (30) configured to move the first brake lining (38) to disengage the rail (14) when the first actuator (30) is energized. The brake (26) may be configured to be mounted on a machine (16), floor or the like.
Abstract:
An exemplary elevator system includes an elevator car situated for movement along at least one guide rail. A braking device is supported for movement with the elevator car. The braking device includes a plurality of magnet members and a plurality of cooperating members. The cooperating members are selectively movable between first and second positions relative to the magnet members. In the first position the elevator car is allowed to move along the guide rail. In the second position the magnet members and the cooperating members cooperate to cause an electromagnetic interaction between the braking device and the guide rail to resist movement of the elevator car along the guide rail.
Abstract:
An elevator system 40 includes an electronic system 48 capable of triggering a machine room brake and an electromagnetic safety trigger 46 with low hysteresis and with minimal power requirements that can be released to engage safeties 70A, 70B when car over-speed and/or over-acceleration is detected. The electromagnetic trigger 46 may be reset automatically and may be released to engage the safeties 70A, 70B during the reset procedure. The system includes an over-speed and over-acceleration detection and processing system that is configured to decrease response time and to reduce the occurrence of false triggers caused by conditions unrelated to passenger safety, such as passengers jumping inside the elevator car 16.
Abstract:
An exemplary brake device includes a brake element configured to apply a braking force to resist rotation of an associated component. A mounting member is configured to mount the brake device to a stationary surface. The mounting member is at least partially moveable relative to the stationary surface responsive to a torque on the brake device. A sensor provides an indication of a force associated with any movement of the mounting member relative to the stationary surface responsive to the torque.
Abstract:
An exemplary mounting arrangement for components of an elevator system comprises a machine support that is configured to support a load associated with an elevator machine. A support for control electronics that operate the elevator machine is connected to the machine support.
Abstract:
Controlling the movement of elevator cars (22, 24) within a single hoistway (26) prevents the cars from becoming too close while servicing assigned stops. Example control techniques include controlling door operation of at least one of the elevator cars (22, 24) to effectively slow down a follower car or speed up a leader car for increasing a distance between the cars in an area within the hoistway (26) where the cars would otherwise be too close to each other. Disclosed example techniques also include dynamically altering the motion profile of at least one of the cars and adding an additional stop for one of the cars.