An illustrative example embodiment of an elevator system includes a machine including a motor and a brake. The machine is configured to selectively cause movement of an elevator car. At least one vibration sensor situated near the machine provides an indication of operation of the machine to indicate at least stops and starts of the machine associated with stopping and starting movement of the elevator car.

This invention is directed to a self-propelled elevator system having multiple motors or one motor, and methods for synchronizing said multiple motors. This invention is also directed to an elevator brake system to be used in said self-propelled elevator system or other types of elevators to increase their level of safety.

This invention is directed to a self-propelled elevator system having multiple motors or one motor, and methods for synchronizing said multiple motors. This invention is also directed to an elevator brake system to be used in said self-propelled elevator system or other types of elevators to increase their level of safety.

The present application relates to the technical field of lifting equipment, and provides a traction machine and a lifting equipment. The traction machine includes traction pulleys, traction ropes driven by the traction pulleys and fixed pulleys for changing directions of the traction ropes. The fixed pulley is provided with a sensor sensing member rotating with the fixed pulley, a traction machine sensor is arranged beside the fixed pulley; the traction machine sensor is configured to detect a rotation speed of the sensor sensing member, and send the rotation speed to a controller of the traction machine; the controller controls a rotation of the traction pulley according to detected data of the traction machine sensor. Since this kind of traction machine is provided with the sensor sensing member and the traction machine sensor, it is capable of detecting whether the traction machine has an abnormal operation, and stopping the traction machine immediately in an abnormal state.

Elevator systems are described. The elevator systems include an elevator car movable along guide rails along an elevator shaft, the car having a platform, a ceiling, and car structural members, with car panels arranged to define a cab, and a car operating panel therein. An overspeed safety system includes first and second safety brakes and electromechanical actuators, with the brakes operable to engage with the guide rails to stop movement of the elevator car. A control system is operably connected to the electromechanical actuators and configured to trigger the electromechanical actuators due to at least a detected overspeed event. The control system is located on top of the ceiling, within the ceiling, beneath the platform, within the platform, behind a car panel, or within the car operating panel.

An elevator system (2) comprises a hoistway (4) extending between a plurality of landings (8a, 8b, 8c); an elevator car (60) configured for moving along the hoistway (4) between the plurality of landings (8a, 8b, 8c); a load/weight sensor (44) configured for detecting the load of the elevator car (60); a speed detector (34) configured for detecting the speed of the elevator car (60); and an elevator safety system. The elevator safety system comprises a safety gear (20) configured for stopping, upon activation, any movement of the elevator car (60); and an electronic safety controller (30) configured for activating the safety gear (20) when the detected speed of the elevator car (60) exceeds a set speed limit. The electronic safety controller (30) is configured for setting the speed limit as a function of the load detected by the load/weight sensor (44).

An elevator system (2) comprises a hoistway (4) extending between a plurality of landings (8a, 8b, 8c); an elevator car (60) configured for moving along the hoistway (4) between the plurality of landings (8a, 8b, 8c); a load/weight sensor (44) configured for detecting the load of the elevator car (60); a speed detector (34) configured for detecting the speed of the elevator car (60); and an elevator safety system. The elevator safety system comprises a safety gear (20) configured for stopping, upon activation, any movement of the elevator car (60); and an electronic safety controller (30) configured for activating the safety gear (20) when the detected speed of the elevator car (60) exceeds a set speed limit. The electronic safety controller (30) is configured for setting the speed limit as a function of the load detected by the load/weight sensor (44).

An overspeed brake system for use in an elevator powerhead is provided. A brake rotor is attachable to a cable drum to rotate with a cable drum. A brake member selectively engages the brake rotor upon transition of an actuation lever from a first position to a second position. A biasing member acts on the actuation lever to bias the actuation lever from the first position towards the second position. A latch arrangement has a first orientation maintaining the actuation lever in the first position and a second orientation releasing the actuation lever for transitioning from the first position to the second position. The latch arrangement transitions from the first orientation to the second orientation when a speed sensing arrangement senses that the rotational speed of the cable drum is at least a predetermined rotational speed.

An overspeed brake system for use in an elevator powerhead is provided. A brake rotor is attachable to a cable drum to rotate with a cable drum. A brake member selectively engages the brake rotor upon transition of an actuation lever from a first position to a second position. A biasing member acts on the actuation lever to bias the actuation lever from the first position towards the second position. A latch arrangement has a first orientation maintaining the actuation lever in the first position and a second orientation releasing the actuation lever for transitioning from the first position to the second position. The latch arrangement transitions from the first orientation to the second orientation when a speed sensing arrangement senses that the rotational speed of the cable drum is at least a predetermined rotational speed.

A safety brake system for use in a conveyance system. The safety brake system includes a guide rail and a conveyance component moveable along the guide rail. The safety brake system includes: a safety brake moveable between a non-braking position where the safety brake is not in engagement with the guide rail and a braking position where the safety brake is engaged with the guide rail; a linkage mechanism; and an actuator for the safety brake. The actuator is configured to be mounted to the conveyance component. The actuator includes an electromagnet switchable between a first state and a second state; and an actuation component configured to move relative to the electromagnet from a first position when the electromagnet is in the first state to a second position when the electromagnet is in the second state.