JP2015124033A - Elevator device and method of detecting load inside elevator car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable detection of a load inside an elevator car before activation of an elevator device without using a load detecting device, and to prevent an increase in the number of devices.SOLUTION: In an elevator device disclosed in the invention, for achieving a purpose described above, a control board which detects a position and a speed of an elevator car from a detection signal of an encoder for detecting rotations of a governor where a governor rope is wound includes: a load inside an elevator car estimation section for estimating a load inside the elevator car from travel torque of the elevator device; and a load inside an elevator car fluctuation estimation section during a halt of an elevator device for acquiring a fluctuation amount of the load inside the elevator car during the halt of the elevator device. The load inside the elevator car during the halt of the elevator device is estimated by adding an estimation value of the load inside the elevator car that is estimated by the load inside an elevator car estimation section from the travel torque of the elevator device and the fluctuation amount of the load inside the elevator car during the halt of the elevator device that is acquired by the load inside an elevator car fluctuation estimation section during a halt of an elevator device.

Description

  The present invention relates to an elevator apparatus and a method for detecting a load in the car, and more particularly to an elevator apparatus suitable for detecting a load in the car without using a load detector and a method for detecting the load in the car.

  Conventionally, there is one described in Patent Document 1 for detecting a load in a car of an elevator apparatus without using a load detector. This Patent Document 1 describes that a load in a car is detected based on a torque command value of a motor torque output by an electric motor during traveling of an elevator apparatus.

Japanese Patent Laid-Open No. 10-167595

  By the way, in an elevator apparatus using a load detector, the load in the car before the elevator apparatus is activated is detected by the load detector. If a load exceeding a certain level is detected, the elevator apparatus determines that the elevator is full. By assigning calls to other elevator devices, it is possible to optimize the operation efficiency of the entire elevator device.

  On the other hand, as described in Patent Document 1, in order to have a similar function in an elevator apparatus that detects a load in a car using a torque command value during traveling of the elevator apparatus, It is necessary to detect the load in the car. For this purpose, a load detector must be used, and the number of devices increases.

  The present invention has been made in view of the above-described points, and an object of the present invention is to provide an elevator apparatus that can detect a load in a car before the elevator apparatus is started without using a load detector and does not increase the number of apparatuses. The object is to provide a method for detecting the load in the car.

  In order to achieve the above object, an elevator apparatus according to the present invention is a hoisting machine, a main rope wound around the hoisting machine, and a passenger car connected to one end of the main rope and going up and down via the main rope. A counterweight connected to the other end of the main rope, a governor rope attached to the car, a governor around which the governor rope is wound, an encoder for detecting the rotation of the governor, and detection of the encoder An elevator apparatus comprising a control board for detecting a position and speed of the car from a signal, the control board; a car load estimating unit for estimating a load in the car from a running torque of the elevator apparatus; An elevator car load fluctuation estimating unit for obtaining a load fluctuation amount in the car when the elevator apparatus is stopped; The elevator apparatus determined by the estimated load in the car from the running torque of the elevator apparatus estimated by the in-car load estimating part and the in-car load fluctuation estimating part while the elevator apparatus is stopped. The load in the car while the elevator apparatus is stopped is estimated by adding the load fluctuation amount in the car while the car is stopped.

  Further, in order to achieve the above object, the elevator car load detecting method of the present invention is connected to a hoisting machine, a main rope wound around the hoisting machine, and one end of the main rope, A car that moves up and down via a main rope, a counterweight connected to the other end of the main rope, a governor rope attached to the car, a governor around which the governor rope is wound, and rotation of the governor In the elevator car load detection method of an elevator apparatus that detects a load in the elevator car of an elevator apparatus that includes an encoder to detect and a control board that detects a position and speed of the car from a detection signal of the encoder, The control board includes an in-car load estimating unit that estimates a load in the car from a running torque of the elevator device, and the elevator. An elevator car load fluctuation estimating unit for obtaining an amount of load fluctuation in the car while the data is being stopped, and from the running torque of the elevator device estimated by the car load estimating unit. The elevator car load estimated value and the load fluctuation amount in the car when the elevator apparatus is stopped calculated by the elevator car load fluctuation estimating unit when the elevator apparatus is stopped. It is characterized in that the load in the car that is stopped is estimated.

  According to the present invention, since the load in the car before the elevator apparatus is activated can be detected without using a load detector, the number of apparatuses does not increase, and this type of elevator apparatus is effective.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram which shows Example 1 of the elevator apparatus which concerns on this invention. It is a figure which shows the system for the load detection in a car in one Example of the elevator apparatus which concerns on this invention. It is a figure for demonstrating the detection of the load variation | change_quantity in a passenger car in one Example of the elevator apparatus which concerns on this invention.

  Hereinafter, the elevator apparatus of the present invention and the load detection method in the car will be described based on the illustrated embodiments.

  FIG. 1 shows a schematic configuration of a first embodiment of an elevator apparatus according to the present invention. As shown in the figure, the elevator apparatus of the present embodiment includes a hoist 1, a main rope 2 wound around the hoist 1, and a ride that is connected to one end of the main rope 2 and moves up and down via the main rope 2. A car 3, a counterweight 4 connected to the other end of the main rope 2, a governor rope 5 attached to the car 3, a governor 6 around which the governor rope 5 is wound, and an encoder 7 for detecting the rotation of the governor 6. And a control board 8 for detecting the position and speed of the car 3 from the detection signal of the encoder 7.

  Then, as shown in FIG. 2, the control board 8 includes an in-car load estimating unit 11 that estimates a load in the car 3 from a running torque of the elevator apparatus, and a load fluctuation in the car 3 when the elevator apparatus is stopped. An elevator car load fluctuation estimating unit 12 that determines the amount of the elevator apparatus that is stopped, a load estimated value in the car 3 from the running torque of the elevator apparatus estimated by the car load estimating unit 11, and the elevator apparatus The load in the car 3 when the elevator apparatus is stopped is estimated by adding the load fluctuation amount in the car 3 while the elevator apparatus is stopped, which is obtained by the in-car load fluctuation estimating unit 12 while stopped. I have to.

  That is, as shown in FIG. 2, the motor torque command value 10 during the steady speed operation of the elevator apparatus is input to the in-car load estimating unit 11, and the in-car load estimating unit 11 performs the installation adjustment of the elevator apparatus. Estimating the load in the car 3 when the elevator apparatus is traveling by comparing with the motor torque storage circuit that stores the motor torque command in each state of the upper and lower floors when traveling with a predetermined load It is.

  That is, in this embodiment, the load detection unit in the car load estimation unit 11 of the control board 8 is devised so as to detect the load in the car 3 when the elevator apparatus is stopped.

  Specifically, as shown in FIG. 2, a car vertical movement amount conversion unit 13 that converts the rotation amount of the encoder 7 (see FIG. 1) into a movement amount of the car 3, and a car vertical movement amount conversion unit 13. The elevator car load fluctuation estimating unit 12 is provided, which includes an elevator car load fluctuation estimating unit 14 for obtaining a load fluctuation amount in the car 3 from the movement amount of the car 3 converted in step S3. The elevator apparatus is stopped by adding the load fluctuation amount calculated by the in-car load fluctuation estimation unit 12 while the apparatus is stopped and the estimated in-car load immediately before the elevator apparatus is stopped (during traveling). The load in the car 3 is estimated.

  When the load in the car 3 fluctuates while the elevator apparatus is stopped, the main rope 2 contracts due to the load, and the position of the car 3 fluctuates up and down. The fluctuation amount of the car 3 rotates the governor 6 via the governor rope 5, and the rotation of the governor 6 is output as a pulse signal of the encoder 7. The pulse signal of the encoder 7 is input to the car vertical movement amount conversion unit 13 of the control board 8 and the number of pulses is integrated to calculate the car movement amount due to the load fluctuation in the car 3.

  Next, the car movement amount and car position data are input to the car load fluctuation estimating unit 14. As shown in FIG. 3, the in-car load variation estimating unit 14 moves the car movement amount X1 when loaded at the rated load of 100% from the no-load at the lowest floor collected at the time of installation of the elevator apparatus or the like. Then, the travel amount A (100%) of the rated load 100% at the stop position of the car on the arbitrary floor is estimated from the travel amount X2 when the load is loaded from the no load on the top floor to the rated load 100%. can do.

  On the basis of this car movement amount A (100%) and the car movement amount of the car vertical movement amount conversion unit 13 described above, the expression “in-car load fluctuation amount at any floor = 100% / (X2 + (X1) −X2) × car position) × car movement amount ”, the load fluctuation amount in the car 3 at any floor is calculated. By adding the amount of load fluctuation in the car while the elevator apparatus is stopped and the estimated load in the car due to the traveling of the elevator apparatus immediately before the elevator apparatus is stopped, the load in the car 3 when the elevator apparatus is stopped is added. The load can be estimated.

  According to such a present Example, since the load in the passenger car 3 can be detected without using a load detector, the number of devices does not increase.

  In addition to the apparatus of the present embodiment described above, in an elevator apparatus equipped with a load detector, the operation of the elevator apparatus is continued by estimating the load in the passenger car described above as a backup for a load detector failure or the like. It becomes possible.

  The present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Winding machine, 2 ... Main rope, 3 ... Riding car, 4 ... Balance weight, 5 ... Governor rope, 6 ... Governor, 7 ... Encoder, 8 ... Control board, 10 ... Motor torque command during the steady speed driving | running | working of an elevator apparatus Value: 11 ... In-car load estimation unit, 12: In-car load variation estimation unit while the elevator apparatus is stopped, 13: Ride-up / down movement conversion unit, 14: In-car load variation estimation unit.

Claims (7)

A hoisting machine, a main rope wound around the hoisting machine, a ride connected to one end of the main rope, elevating and lowering via the main rope, and a counterweight connected to the other end of the main rope A governor rope attached to the car; a governor around which the governor rope is wound; an encoder that detects the rotation of the governor; and a control board that detects the position and speed of the car from the detection signal of the encoder; In an elevator apparatus equipped with
The control board includes: an in-car load estimating unit that estimates a load in the car from a running torque of the elevator apparatus; and an elevator apparatus that is stopped while obtaining an amount of load fluctuation in the car while the elevator apparatus is stopped. An in-car load variation estimating unit, and the estimated in-car load value from the running torque of the elevator device estimated by the in-car load estimating unit, and the in-car load variation while the elevator device is stopped An elevator apparatus characterized in that the load in the car while the elevator apparatus is stopped is estimated by adding together the amount of load fluctuation in the car while the elevator apparatus is stopped determined by the estimation unit. The elevator apparatus according to claim 1,
The in-car load fluctuation estimation unit when the elevator apparatus is stopped is converted by a car vertical movement amount conversion unit that converts the rotation amount of the encoder into a movement amount of the car, and the car vertical movement amount conversion unit. An elevator apparatus comprising: a car load fluctuation estimating unit for obtaining a car load fluctuation amount from a movement amount of the car. The elevator apparatus according to claim 2,
The in-car load fluctuation amount while the elevator apparatus is stopped determined by the in-car load fluctuation estimating unit is an in-car load fluctuation amount at an arbitrary floor calculated by the following equation. Elevator device.
Car load variation on any floor = 100% / (X2 + (X1-X2) × car position) × car movement amount.
(Where X1 is the amount of movement of the car loaded from the no load on the bottom floor to the rated load of 100%, and X2 is the amount of movement of the car loaded from the no load on the top floor to the rated load of 100%. ) The elevator apparatus according to claim 2 or 3,
The car vertical movement amount conversion unit calculates the car movement amount due to the load fluctuation in the car by integrating the number of pulses of the pulse signal from the encoder, and the car movement amount and the car An elevator apparatus characterized in that position data is input to the in-car load fluctuation estimating section. A hoisting machine, a main rope wound around the hoisting machine, a ride connected to one end of the main rope, elevating and lowering via the main rope, and a counterweight connected to the other end of the main rope A governor rope attached to the car; a governor around which the governor rope is wound; an encoder that detects the rotation of the governor; and a control board that detects the position and speed of the car from the detection signal of the encoder; In the elevator car load detection method for detecting the load in the elevator car of the elevator apparatus comprising:
The control board includes: an in-car load estimating unit that estimates a load in the car from a running torque of the elevator apparatus; and an elevator apparatus that is stopped while obtaining an amount of load fluctuation in the car while the elevator apparatus is stopped. An in-car load variation estimating unit, and the estimated in-car load value from the running torque of the elevator device estimated by the in-car load estimating unit, and the in-car load variation while the elevator device is stopped The elevator car according to claim 1, wherein the load in the car while the elevator apparatus is stopped calculated by the estimation unit is added together to estimate the load inside the car when the elevator apparatus is stopped. Internal load detection method. In the elevator car load detection method according to claim 5,
The in-car load fluctuation estimation unit when the elevator apparatus is stopped is converted by a car vertical movement amount conversion unit that converts the rotation amount of the encoder into a movement amount of the car, and the car vertical movement amount conversion unit. And an in-car load fluctuation estimating unit that obtains the in-car load fluctuation amount from the moving amount of the car, and the inside of the car while the elevator apparatus is stopped obtained by the in-car load fluctuation estimating unit. The method for detecting a load in a car of an elevator apparatus, wherein the load fluctuation amount is a load fluctuation amount in a car at an arbitrary floor calculated by the following equation.
Car load variation on any floor = 100% / (X2 + (X1-X2) × car position) × car movement amount.
(Where X1 is the amount of movement of the car loaded from the no load on the bottom floor to the rated load of 100%, and X2 is the amount of movement of the car loaded from the no load on the top floor to the rated load of 100%. ) In the elevator car load detection method according to claim 6,
The car vertical movement amount conversion unit calculates the car movement amount due to the load fluctuation in the car by integrating the number of pulses of the pulse signal from the encoder, and the car movement amount and the car A method for detecting an in-car load of an elevator apparatus, wherein position data is input to the in-car load fluctuation estimating unit.

Images