Elevator safety control device
A technology of safety control and safety control department, which is applied to elevators, transportation and packaging, and lifts in buildings, which can solve the problems of frequency increase and achieve low-cost effects
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Embodiment approach 1
[0026] figure 1 It is a configuration diagram showing a machine-room-less elevator according to Embodiment 1 of the present invention. In the drawing, a traction machine 2 is provided at a lower portion inside the hoistway 1 . The hoisting machine 2 has a driving sheave, a hoisting machine motor that rotates the driving sheave, and a hoisting machine brake that brakes the rotation of the driving sheave. A suspension unit (not shown) is wound around the drive sheave. The suspension unit employs a plurality of ropes or a plurality of straps.
[0027] The car 3 and the counterweight (not shown) are suspended in the hoistway 1 by the suspension unit, and are raised and lowered by the traction machine 2 . In the lower part of the hoistway 1, an elevator control device (control panel) 4 for controlling the hoisting machine 2 is provided. The elevator control device 4 has a safety control unit 22 and an operation control unit 21 that controls the operation of the car 3 .
[0028...
Embodiment approach 2
[0066] under, Figure 5 It is a configuration diagram showing a machine-room-less elevator according to Embodiment 2 of the present invention. In Embodiment 2, a case where the floor on which the maintenance personnel boards the car 3 is specified (for example, a case where an unlocking device for opening the hall door 5 from the hall side is provided only on a specific floor) will be described. In this case, the hall door switch 6 is divided into three systems of the lowest floor hall door switch 6a, the specific floor hall door switch 6d, and the non-specific floor hall door switch 6e installed on other floors.
[0067] Safety Control Logic 1
[0068] The safety control section 22 monitors the state of the car door switch 17 and the landing door switches 6a, 6d, and 6e of the three systems. When detecting that the car door switch 17 is turned on, that is, the car door 13 is in a fully closed state, any When one of the hall door switches 6a, 6d, and 6e is off, that is, when...
Embodiment approach 3
[0075] under, Figure 6It is a configuration diagram showing a machine-room-less elevator according to Embodiment 3 of the present invention. In this example, the hall door switches 6 are divided into the same number of systems as the number of floors so as to independently detect the open and closed states of the hall doors 5 of all floors. That is, the signals of all the hall door switches 6 are input to the elevator control device 4 which is an independent system.
[0076] Safety Control Logic 1
[0077] The safety control unit 22 monitors the state of the car door switch 17 and the landing door switches 6 of all systems, and when it is detected that the car door switch 17 is turned on, that is, when the car door 13 is fully closed, any landing door When the switch 6 is off, that is, when any one of the landing doors 5 is open, the automatic operation is disabled.
[0078] Safety Control Logic 2
[0079] When the safety control unit 22 detects that when the car door swi...
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