JP2007153571A - Operation control device of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operation control device of an elevator capable of preventing failure and shutting-in of the elevator, even when long periodic earthquake motion is generated, by controlling operation in advance by accurately foreseeing that a swinging quantity becomes large, when small amplitude is generated in the initial stage. <P>SOLUTION: This operation control device of the elevator is arranged in a building for arranging a base isolation device 12 between a high-rise section 10 and a low-rise section 11; and is provided with a differential transformer 1 detecting horizontal directional swinging in the vicinity of a story floor having the base isolation device 12, a counting circuit 4 detecting a present position of a car, and a control circuit 5 reducing a speed of the car, when a size of a long period vibration component is a predetermined value A to a predetermined value B (A<B), by extracting only the long period vibration component from the horizontal directional swinging detected by the differential transformer 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an operation control device for an elevator installed in a building having a seismic isolation structure in an intermediate portion.

  A conventional elevator apparatus for buildings having an intermediate seismic isolation structure will be described with reference to FIGS. 5 and 6 (see, for example, Patent Document 1). As shown in FIG. 5, the building having an intermediate seismic isolation structure is divided into two layers of a high-rise part 10 and a low-rise part 11. Even if the seismic isolation device 12 is interposed between the high-rise part 10 and the low-rise part 11, and the low-rise part 11 vibrates greatly at the time of the occurrence of an earthquake, the high-rise part 10 installed via the seismic isolation device 12 is almost Vibration is not transmitted. The building elevator apparatus having such an intermediate seismic isolation structure includes a guide rail 14 that is continuously attached to the high-rise portion 10 and the low-rise portion 11 via a support portion 13, and guides such as guide shoes to the guide rail 14. An elevator car 16 supported by a mechanism 15 and moving up and down along the guide rail 14 is provided. When the elevator car 16 moves up and down across the seismic isolation device 12, as shown in FIG. 6, the hoistway shifts due to the relative displacement between the high-rise part 10 and the low-rise part 11 due to the earthquake. 10 and the normal rail 14a installed in the low-rise part 11, the pair of joint rails 14b attached near the seismic isolation device 12, and the intermediate rail 14c provided between the pair of joint rails 14b. The joint rail 14b is designed to be more easily deformed than other normal rails 14a and intermediate rails 14c by partially processing the cross-sectional shape. The guide rail 14 is configured by continuously connecting the normal rail 14 a installed in the high-rise part 10 and the low-rise part 11, the joint rail 14 b installed in the vicinity of the seismic isolation device 12 and the intermediate rail 14 c, and the seismic isolation device 12. A hoistway that can be operated continuously is secured by straddling the road. Hereinafter, the portion sandwiched between the pair of joint rails 14b is referred to as the seismic isolation structure portion of the elevator apparatus.

  Long-period vibrations are difficult to detect with an earthquake detector. There is another conventional elevator apparatus that detects and controls this (for example, see Patent Document 2). In long-period vibrations, small fluctuations in the initial stage become large fluctuations thereafter. In particular, when it resonates with the natural frequency of the building, the amount of shaking becomes significant. This other conventional elevator apparatus detects the amount of shaking at the time when the amount of shaking increases and controls the operation. If the car is in the vicinity of the intermediate seismic isolation structure while traveling, the operation may be controlled after the sway increases, and for example, even if it stops suddenly, it may enter the floor of the seismic isolation structure. There is a risk of failure or confinement due to abnormalities or detachment from the rail.

JP 2001-122554 A JP 2004-345752 A

  In the conventional elevator apparatus for buildings having an intermediate seismic isolation structure, when an earthquake occurs, as shown in FIG. 6, the high-rise part 10 and the low-rise part 11 are displaced, and the seismic isolation apparatus 12 follows this deviation. Distorted. Along with this, the guide rail 14 ensures the function as a guide rail without deforming the normal rail 14a and the intermediate rail 14c as much as possible only by deformation of the joint rail 14b. Moreover, the control operation at the time of the earthquake occurrence of the elevator apparatus is stopped by traveling to the nearest floor that can be stopped when an earthquake is detected, as shown in the elevator association technical data. Or, if it takes more than a predetermined time to the nearest floor, it is stopped suddenly. After a sudden stop, the vehicle is driven at a low speed by an operation switch such as a monitoring panel. However, there are cases where the above-described control operation is not performed for long-period earthquakes that are difficult to detect with an earthquake detector. Moreover, in the conventional elevator apparatus for buildings having the above-mentioned intermediate seismic isolation structure, if the guide rail 14 of the hoistway is highly distorted when an earthquake occurs, the elevator car 16 will pass through the seismic isolation structure position. There is also a risk that the vehicle will not be able to travel, such as a hindrance. Become.

  In general, the natural vibration frequency of a building varies depending on the height of the building, but is in a frequency band of several Hz or less, and oscillates at this natural frequency when a strong wind is generated. Moreover, it is said that the vibration component at the time of occurrence of a long period earthquake is 0.1 to 1 Hz. In particular, when a long-period earthquake occurs, the amplitude may further increase when resonating with the natural frequency of the building. Another conventional elevator apparatus has a problem in that operation control is performed at the time when such strong winds and the amount of shaking at the time of an earthquake increase.

  The present invention has been made in order to solve the above-described problems, and its purpose is to accurately predict that the amount of shaking will increase when a small amplitude occurs in the initial stage, and control the operation in advance. Thus, an elevator operation control apparatus capable of preventing an elevator failure or confinement even when long-period vibrations occur can be obtained.

  An elevator operation control device according to the present invention is an elevator operation control device installed in a building in which a seismic isolation device is provided between a high-rise part and a low-rise part, and near the floor where the seismic isolation device is located Only a long-period vibration component is extracted from the lateral vibration detected by the vibration detection means for detecting the lateral vibration of the car, the car position detection means for detecting the current position of the car, and the vibration detection means, Control means for decelerating the car when the magnitude of the periodic vibration component is greater than or equal to a first predetermined value and less than a second predetermined value (first predetermined value <second predetermined value) It is.

  The elevator operation control device according to the present invention is capable of accurately predicting that the amount of shaking will be large when a small amplitude occurs in the initial stage and controlling the operation in advance, and when a long-period vibration occurs. However, there is an effect that the elevator can be prevented from being broken or confined.

Embodiment 1 FIG.
An elevator operation control apparatus according to Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is a side view of the structure of an earthquake detection portion of an elevator operation control apparatus according to Embodiment 1 of the present invention. FIG. 2 is a block diagram showing a configuration of a control portion of the elevator operation control apparatus according to Embodiment 1 of the present invention. In addition, in each figure, the same code | symbol shows the same or equivalent part.

  In FIG. 1, the differential transformer 1 installed on the upper part of the low-rise part 11 of the building and the lower part of the high-rise part 10 of the building are joined to the arms of the differential transformer 1 so that the movement of the high-rise part 10 can be detected. A plate 2 is provided.

  In order to detect the displacement of the coordinate axes in the XY directions, two sets of the differential transformer 1 and the plate 2 (swing detection means) are installed on orthogonal axes. This differential transformer 1 detects the amount of lateral vibration in the vicinity of the floor where the intermediate seismic isolation structure is located, that is, detects the amount of displacement of the upper and lower layers 10 and 11 of the intermediate seismic isolation floor. The output signal of the differential transformer 1 is voltage amplified by the amplifier circuit 3 and then supplied to the elevator control panel.

  Further, in FIG. 2, in a machine room such as a rooftop of a building, a cumulative value of rotation pulse signals of an amplifier circuit 3 and an encoder (not shown) installed in an elevator hoist (not shown) is counted. Count circuit (car position detection means) 4, control circuit (control means) 5 which is a part of the elevator control panel and is composed of a microcomputer including a CPU and a memory, and current and voltage control of an electric motor 7 which will be described later. And a motor 7 that drives the hoist to raise and lower the car 16.

  The control circuit 5 includes an A / D input unit 51 for inputting an output signal of the amplifier circuit 3, an abnormality determination unit 52 for performing abnormality determination processing, and operation management of the car 16 according to the elevator hall call and the car call. The operation control unit 53 to be performed, the car position calculation unit 54 for calculating the current position of the elevator car 16 based on the accumulated rotation pulse value from the counting circuit 4, and the current position of the car 16 calculated by the car position calculation unit 54 From the car position storage unit 55 that stores the position where the intermediate vibration isolation structure is installed in advance, the ideal speed pattern command based on the operation management information from the operation control unit 53 and the current car position from the car position calculation unit 54 A speed pattern command generating unit 56 for calculating a value, a speed control calculating unit 57 for calculating a speed control command value (torque command) from the accumulated rotation pulse value from the counting circuit 4 and an ideal speed pattern command value, A current control section 58 for outputting a current command to the power conversion circuit 6 based on the speed control command value is provided. Each unit described above is realized by software.

  Next, the operation of the elevator operation control apparatus according to the first embodiment will be described with reference to the drawings. 3 and 4 are flowcharts showing the operation of the control circuit of the elevator operation control apparatus according to Embodiment 1 of the present invention.

  Long-period vibrations, which are difficult to detect with an earthquake detector, are small in the early stages, but then develop into large ones. In order to foresee that it will eventually become a large vibration, only the long-period vibration component is extracted, and the operation is controlled according to the level in the initial small amplitude state (for example, the floor where the speed reduction or seismic isolation structure is installed) Not to service.) This prevents door opening / closing abnormalities caused by the deviation of the car door and the landing door caused by deflection at the seismic isolation structure installation site, and failure or confinement due to the car coming off the rail.

  In step 100, the control circuit 5 determines whether the initial setting (immediately after the power is turned on). If the initial setting is being performed, the process proceeds to step 110. If the initial setting has been performed, the process proceeds to step 120.

  In step 110, in order to store the initial value of the differential transformer 1 (there is no shaking), the A / D input unit 51 stores the stopped X-axis differential transformer output signal in Xs of the memory.

  In step 111, the A / D input unit 51 stores the stopped Y-axis differential transformer output signal in Ys.

  On the other hand, in step 120, the A / D input unit 51 stores the X-axis differential transformer output signal during traveling in Xr.

  Next, in step 121, the A / D input unit 51 stores the Y-axis differential transformer output signal during traveling in Yr.

Next, in step 122, the abnormality determining unit 52 calculates the amount of change in the differential transformer during traveling as shown below.
X axis: ΔErr1 = Xr−Xs
Y axis: ΔErr2 = Yr−Ys

  Next, in step 123, the abnormality determination unit 52 calculates the absolute amplitude amount ΔErr on the two-dimensional plane from the vector components orthogonal to the X axis and the Y axis.

  Next, in step 124, the abnormality determination unit 52 performs band pass filter calculation as described below.

  ΔErr → 1 / [(1 + T1 * S) (1 + T2 * S)] → ΔErr

  Here, T1 and T2 are arbitrary time constants for extracting only long-period vibration components. For example, when extracting vibration components of 0.1 to 1 Hz, a time constant equivalent to 0.1 Hz is set for T1. Then, a time constant corresponding to 1 Hz is set for T2. Generally, a vibration component having a period of 0.1 to 1 Hz when an earthquake occurs is said to be a long-period ground motion, and the vibration period around this is approximated to the natural period of a middle-rise or high-rise building structure. Therefore, the time constant is a value for extracting only components near the vibration frequency (0.1 to 1 Hz) generated by strong wind or long-period ground motion. An actual digital arithmetic circuit has a circuit configuration in which the transfer function represented by the above equation is Z-transformed.

  Next, in steps 125 to 126, the abnormality determination unit 52 determines whether the absolute amplitude amount ΔErr is larger than a predetermined value (first predetermined value) A. A command (hereinafter referred to as a TOP speed down control signal) for reducing the elevator car speed passing through the floor near the seismic isolation structure to a speed at which it can safely pass is turned on. The operation control unit 53 outputs a deceleration command to the power conversion circuit 6 so as to reduce the car speed. When it is not large, that is, when it is less than the predetermined value A, the routine proceeds to step 140.

  Next, in steps 127 to 128, it is determined whether or not the absolute amplitude amount ΔErr is larger than a predetermined value (second predetermined value) B (A <B). Regardless of whether the vehicle 16 is stopped or running, the call response to the seismic isolation structure installation floor is prevented (to prevent the car 16 from responding to this floor). Further, when the car 16 is traveling (in this case, the control operation is performed at a reduced speed in step 126), the stop to the floor having the seismic isolation structure is prevented, and only the other floors are stopped. (When there is a call to the seismic isolation structure installation floor and the car 16 becomes larger than the predetermined value B during traveling, it is not allowed to stop at that floor, and it is stopped at the other nearest floor. ) The operation control unit 53 does not respond to the call to the seismic isolation structure installation floor and stops the stop to the seismic isolation structure installation floor.

  Next, in steps 129 to 132, it is determined whether the absolute amplitude amount ΔErr is larger than a predetermined value (third predetermined value) C (A <B <C). Determine if the elevator is running. If the elevator is stopped, the process proceeds to step 150. When the elevator is running, the current position of the car 16 stored in the car position storage unit 55 is compared with the position where the intermediate vibration isolation structure is installed. If it is near the intermediate seismic isolation structure installation floor, it is suddenly stopped. The operation control unit 53 outputs a sudden stop command to the power conversion circuit 6 so as to stop the car suddenly. When the car position is not near the intermediate seismic isolation structure installation floor, the process proceeds to step 160.

  In step 140, when the absolute amplitude amount ΔErr is not larger than the predetermined value A, the TOP speed down control signal is turned OFF. That is, normal operation is performed.

  In step 150, if the elevator is stopped, the operation control unit 53 makes the activation impossible.

  In step 160, when the car position is not in the vicinity of the intermediate seismic isolation structure installation floor, the car stops at the nearest floor and cannot be activated. The operation control unit 53 outputs a nearest floor stop command to the power conversion circuit 6 so that the car is stopped at the nearest floor. However, the door can be opened and closed so that passengers in the car can get off.

  If comprised by such a process, when the cage | basket | car 16 passes the intermediate | middle base isolation structure vicinity, the safe elevator which does not generate | occur | produce the driving | running | working abnormality by the rapid displacement in a base isolation structure part, or a confinement abnormality can be provided. The predetermined values A, B, and C are amplitude values at the initial stage when long-period vibration is generated due to an earthquake and strong wind, and are set at three levels. The predetermined values A, B, and C can be set by switching to three levels based on the stroke displacement amount of the differential transformer 1. In addition, you may set not only three steps but four steps or more, and may set arbitrarily.

  According to the elevator operation control apparatus according to the first embodiment, an earthquake or strong wind is difficult to detect accurately in a conventional seismic detector or an elevator control apparatus for an isolated building in a building having an intermediate seismic isolation structure. With respect to long-period vibration due to the above, when a small amplitude occurs in the initial stage, it is possible to accurately predict that the amount of shaking will increase and to ensure safe traveling of the elevator. Moreover, since it can replace the seismic detector of the transverse (S) wave, the cost is reduced. In addition, by using the differential transformer 1, it is possible to perform multi-stage detection as compared with the conventional sensor, and the degree of freedom for measures to increase safety is increased.

It is the figure which looked at the structure of the earthquake detection part of the operation control apparatus of the elevator which concerns on Embodiment 1 of this invention from the side. It is a block diagram which shows the structure of the control part of the operation control apparatus of the elevator which concerns on Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the control circuit of the operation control apparatus of the elevator which concerns on Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the control circuit of the operation control apparatus of the elevator which concerns on Embodiment 1 of this invention. It is the figure which looked at the conventional elevator for buildings which have an intermediate seismic isolation structure from the side. It is the figure which looked at the conventional elevator for buildings which have an intermediate seismic isolation structure from the side.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Differential transformer, 2 plates, 3 Amplifying circuit, 4 Counting circuit, 5 Control circuit, 6 Power conversion circuit, 7 Electric motor, 10 High-rise part, 11 Low-rise part, 12 Seismic isolation device, 13 Support part, 14 Guide rail, 14a Normal rail, 14b joint rail, 14c intermediate rail, 15 guide mechanism, 51 A / D input unit, 52 abnormality determination unit, 53 operation control unit, 54 car position calculation unit, 55 car position storage unit, 56 speed pattern command generation unit 57 Speed control calculation unit, 58 Current control unit.

Claims (4)

An elevator operation control device installed in a building provided with a seismic isolation device between a high-rise part and a low-rise part,
Shaking detection means for detecting lateral shaking near the floor where the seismic isolation device is located;
Car position detection means for detecting the current position of the car;
When only the long-period vibration component is extracted from the lateral vibration detected by the vibration detection means, and the magnitude of the long-period vibration component is greater than or equal to a first predetermined value and less than a second predetermined value (first An elevator operation control apparatus comprising: a control unit that decelerates the car at a predetermined value <second predetermined value). When the magnitude of the long-period vibration component is greater than or equal to the second predetermined value and less than a third predetermined value (second predetermined value <third predetermined value), the control means The elevator operation control device according to claim 1, wherein a call response to a certain floor is prevented and a stop of the seismic isolation device to a certain floor is prevented. The control means has the magnitude of the long-period vibration component equal to or greater than the third predetermined value, the car is running, and the current position of the car detected by the car position detecting means is the seismic isolation device. If the car is near the floor, the car is stopped suddenly, and if the current position of the car is not near the floor where the seismic isolation device is located, the car is stopped nearest to the floor. The elevator operation control device according to claim 2. The shake detection means is a set of differential transformers that respectively detect two orthogonal horizontal shakes,
The control means calculates an absolute amplitude amount from two lateral fluctuations detected by the pair of differential transformers, and extracts only a long-period vibration component from the absolute amplitude amount. The elevator operation control apparatus according to any one of claims 1 to 3.

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