Double deck elevator

Abstract

A double deck elevator comprises a winding machine which lifts up / down a cage frame loaded with two cages in a vertical direction, a cage driving unit which changes a relative distance between upper and lower cages, and a cage position controller which starts an inter-cage distance adjustment operation of the cage driving unit almost at the same time when the winding machine is shifted from an acceleration operation to a constant velocity operation, and changes an operating velocity of the inter-cage distance adjustment operation corresponding to a destination floor almost at the same time when the winding machine changes from the constant velocity operation to a deceleration operation after the destination floor is determined, whereby completing the inter-cage distance adjustment operation almost at the same time when the winding machine stops.

Description

technical field [0001] The present invention relates to a double-deck elevator in which two cars are connected vertically, and more particularly to a double-deck elevator having a car spacing adjusting mechanism capable of adjusting the spacing between the cars during elevator operation. Background technique [0002] In a high-rise building or the like, in order to improve the space efficiency of the building, a double-deck elevator in which two cars are vertically arranged on two floors is used as a transportation means for vertical transportation in the building. in such as figure 1 In the double-deck elevator shown, this has a car that adjusts the distance between the cars by using a crank mechanism 7 to move the upper and lower cars 2, 4 in the car frame 1 in opposite directions. The types of spacing adjustment mechanisms are well known. exist figure 1 In the shown type, the upper car 2 and the lower car 4 are installed on the crank mechanism 7 installed in the middle...

AI Technical Summary

Problems solved by technology

[0008] However, according to the conventional method described above, the car spacing is adjusted during deceleration from the start of the elevator deceleration until the elevator stops, and if the adjustment distance between the cars is large or the elevator deceleration period is short, the speed change at the time of the adjustment operation is large

That is, because it is necessary to adjust the car pitch corresponding to a target floor in a short period of time during deceleration, figure 2 The speed change between the shown times t1 and t2 increases and this speed change makes the occupant feel out of tune and therefore uncomfortable

[0009] In addition, adjusting the car spacing in a short time during deceleration requires a large-power car drive, resulting in increased equipment costs

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