Elevator installation with car and counterweight

摘要

An elevator installation includes a car, a counterweight and safeties which are fitted to the car and the counterweight. The car contains an electrically controlled device for actuating and optionally resetting the safety and the counterweight also contains an electrically controlled device with a safety, or the safety of the counterweight is actuated by a slack-line release.

主权项

1. An elevator installation having an elevator car and a counterweight each guided by at least two guide rails, the counterweight and the elevator car being connected together and supported by a support device, wherein the support device is guided over a deflecting roller or a drive pulley so that the counterweight and the elevator car move in opposite directions, comprising:
at least two first safety brake devices arranged at the elevator car and each associated with a respective one of the guide rails and which engage the guide rails by a respective safety brake element for selectively braking and fixing the elevator car at the guide rails; an equipment arranged at the elevator car and connected to at least one of the first safety brake devices for actuation of the at least one first safety brake device; at least one electronic safety device monitoring a safety state of the elevator installation and activating the equipment for actuation of the at least one first safety brake device; at least two second safety brake devices arranged at the counterweight and each associated with a respective one of the guide rails and which engage the guide rails by a respective safety brake element for selectively braking and fixing the counterweight at the guide rails; a slack-cable triggering device connecting the counterweight with the support device, wherein the second safety brake devices are actuated by the slack-cable triggering device when the support device is slack; and wherein the slack-cable triggering device includes a delay device which delays actuation of the at least one first safety brake device in response the support device becoming slack.