| 摘要 |
<p>An elevator comprising a first governor (121) for braking an emergency stopper (10) engaging a guide rail by restricting the circulation movement of a governor rope (13) suspended in an elevator shaft (1) when the speed of a cage (8) ascending/descending the elevator shaft (1) reaches a first over speed. The cage (8) is also provided with a second governor (42) which brakes the emergency stopper (10) when the cage speed reaches a second over speed lower than the first over speed. Furthermore, an end region drive means (55) is provided in the elevator shaft (1) in order to drive the second governor (42) when the cage (8) ascends or descends an end region. When the cage (8) is descending at an over speed in the end region of the elevator shaft (1), the emergency stopper (10) is actuated by an over speed lower than the emergency brake over-speed in the intermediate region of the elevator shaft (1). Consequently, marginal distance of the cage (8) can be shortened at the end of the elevator shaft and the construction cost of the elevator shaft (1) and the manufacturing cost of a shock absorber (111) can be saved.</p> |
