Elevator apparatus
A technology of elevators and control devices, which is applied in transportation, packaging, elevators, etc., and can solve problems such as the inability to switch operation modes and the inability to detect elevator overloading
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no. 1 Embodiment approach
[0020] figure 1 It is a configuration diagram showing the elevator apparatus according to the first embodiment of the present invention. In the drawing, a car 2 and a counterweight 3 are provided in a hoistway 1 so as to be able to move up and down. A hoist (drive unit) 4 for raising and lowering the car 2 and the counterweight 3 and a deflector pulley (driven pulley) 5 disposed near the hoist 4 are provided on the upper portion of the hoistway 1 . The hoist 4 has a motor 6 and a drive pulley 7 rotated by the motor 6 . A plurality of main ropes 8 are wound around the drive pulley 7 and the deflector pulley 5 . The car 2 and the counterweight 3 move up and down in the hoistway 1 by driving the rotation of the pulley 7 . The deflector pulley 5 is rotated by lifting the car 2 and the counterweight 3 .
[0021] A car guide rail 9 for guiding the movement of the car 2 and a counterweight guide rail (not shown) for guiding the movement of the counterweight 3 are provided in the ...
no. 2 Embodiment approach
[0042] Figure 5 It is a configuration diagram showing an elevator apparatus according to a second embodiment of the present invention. In the drawing, the hoist 4 is supported on a support stand 41 fixed to the upper part of the hoistway 1 . The support stand 41 is provided with a bearing 42 for a hoist that rotatably supports the rotating shaft 7 a of the drive pulley 7 . Lubricating and cooling oil is injected into the hoist bearing 42 . The bearing 42 for a hoist is provided with a deformation detector 43 for measuring the deformation of the bearing 42 for a hoist. Information from the deformation detector 43 is transmitted to the control device 22 . The control device 22 controls the operation of the elevator based on the information from the deformation detector 43 . Other structures and operations are the same as those of the first embodiment.
[0043] Since the elevator operation is controlled based on the deformation of the hoist bearing 42 in this way, it is pos...
no. 3 Embodiment approach
[0047] Image 6 It is a configuration diagram showing an elevator apparatus according to a third embodiment of the present invention. In the figure, the control device 22 controls the motor 6 via an inverter 51 capable of continuously increasing and decreasing the rotational speed of the drive pulley 7 . Cooling fins (not shown) are provided on the inverter 51 . In addition, the inverter 51 is provided with a deformation detector 52 for measuring the deformation of the heat sink. Information from the deformation detector 52 is transmitted to the control device 22 . The control device 22 controls the operation of the elevator based on the information from the deformation detector 52 . Other structures and operations are the same as those of the first embodiment.
[0048] In this way, since the elevator operation is controlled based on the deformation of the cooling fins provided on the inverter 51 that controls the rotational speed of the drive pulley 7, it is possible to e...
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