JP2005119778A - Interlaminer deviation detector for base-isolated building and elevator control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To detect interlaminer deviation between layers for a base-isolated building provided with an elevator shaft. <P>SOLUTION: The first and second respective layer detectors 20A, 20B detect the existence of the interlaminer deviation between the respective layers of the base-isolated building provided with the elevator shaft 10 and detect the existence of the deviation between the respective layers at non-contact by combination of respective permanent magnets 21a, 21b and respective lead switches 22a, 22b. Further, the respective lead switches 22a, 22b are opposed to the respective permanent magnets 21a, 21b and are provided in a magnetization direction of the respective permanent magnets 21a, 21b. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a seismic isolation building interlayer displacement detector that detects a displacement between layers of a seismic isolation building provided with an elevator shaft by a non-contact sensor, and an elevator operation based on a signal from the interlayer displacement detector. The present invention relates to an elevator control device for controlling.

In recent years, an intermediate seismic isolation building having a seismic isolation layer between a lower layer and an upper layer is constructed, and an elevator shaft is provided in this intermediate seismic isolation building.
Conventionally, an elevator shaft provided in an intermediate base isolation building is provided in communication with each layer of the intermediate base isolation building. Each elevator shaft is provided with a guide rail, and each guide rail is connected to each other across the connected elevator shafts. And the guide rail provided in the elevator shaft of the seismic isolation layer part bends according to the interlayer displacement of an upper layer part and a lower layer part by generation | occurrence | production of an earthquake. For this reason, the operation speed of the elevator car moving along the guide rail based on the position and moving direction of the elevator car is limited by the earthquake detection of the earthquake sensor (see, for example, Patent Document 1).

JP 2001-122554 A

  The seismic isolation layer of the intermediate seismic isolation building has the effect of controlling the shaking at the time of the earthquake, but the effect of controlling the shaking caused by strong winds such as typhoons is not sufficient, so the elevator car is detected by the earthquake sensor. Thus, there is a problem that not only when each guide rail bends, but also when the strong winds cause a vibration and a displacement occurs between the layers, the operation must be restricted. Moreover, in order to restrict | limit operation | movement of an elevator car, there also existed the subject that the presence or absence of the shift | offset | difference between each said layer part had to be detected.

The present invention has been made to solve the above-described problems, and a first object is to provide a base-isolated building that can detect the presence or absence of a shift between layers of the base-isolated building provided with an elevator shaft. In this way, an interlayer displacement detector is obtained.
Moreover, the 2nd objective is to obtain the elevator control apparatus which restrict | limits the driving | operation of an elevator, when the shift | offset | difference arises between the layers of a base isolation building.

  The seismic isolation building interlayer displacement detector according to the present invention is a non-contact sensor that detects in a non-contact manner whether or not there is a displacement between each layer of the seismic isolation building provided with the elevator shaft.

  In the present invention, since a non-contact sensor that detects whether or not there is a displacement between each layer of the seismic isolation building provided with the elevator shaft is used for the interlayer displacement detector of the seismic isolation building, whether or not there is a displacement between each layer. Can be detected.

An embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a cross-sectional view of an elevator shaft 10 according to an embodiment.

  In FIG. 1, the elevator shaft 10 is provided in a base-isolated building having a base isolation layer K between a lower layer M and an upper layer N. The seismic isolation layer K is provided with a seismic isolation device such as a seismic isolation rubber, and the seismic isolation device absorbs the shaking of the building during the earthquake.

  The elevator shaft 10 is divided into a lower layer shaft 11M, a seismic isolation layer shaft 11K, and an upper layer shaft 11N by the three-layer structure of the seismic isolation building described above. The car 12 is moved up and down in the lower layer shaft 11M, the seismic isolation layer shaft 11K, and the upper layer shaft 11N.

  The seismic isolation layer shaft 11K is provided with a seismic isolation clearance A for absorbing a horizontal displacement. The lower outer surface of the seismic isolation layer shaft 11K is close to the upper end of the lower layer shaft 11M, and the outer surface of the upper base isolation shaft 11K is close to the lower end of the upper layer shaft 11N. Yes.

  Between the lower layer shaft 11M and the seismic isolation layer shaft 11K, a first interlayer displacement detector 20A that detects an interlayer displacement between the lower layer shaft 11M and the seismic isolation layer shaft 11K is provided. In addition, a second interlayer displacement detector 20B that detects an interlayer displacement between the upper layer shaft 11N and the seismic isolation layer shaft 11K is provided between the upper layer shaft 11N and the seismic isolation layer shaft 11K. .

  The first interlayer displacement detector 20A is a non-contact sensor and includes a permanent magnet (magnet) 21a, a reed switch (magnetic detection element) 22a, and a signal output unit 23a. The permanent magnet 21a is, for example, a cylinder and is provided at the upper end of the lower layer shaft 11M, and the reed switch 22a is provided on the outer surface of the lower part of the seismic isolation layer shaft 11K. The reed switch 22 a is connected to the signal output unit 23 a, and the signal output unit 23 a is connected to the elevator control device 30. The signal output unit 23a includes a power source and a load such as a coil.

  The elevator control device 30 controls the operation of the car 12 that moves up and down in the elevator shaft 10 and will be described in detail later.

  The second interlayer displacement detector 20B is a non-contact sensor and includes a permanent magnet (magnet) 21b, a reed switch (magnetic detection element) 22b, and a signal output unit 23b. The permanent magnet 21b has, for example, a cylindrical shape and is provided at the lower end of the upper layer shaft 11N, and the reed switch 22b is provided on the outer surface of the seismic isolation layer shaft 11K. The reed switch 22b is connected to the signal output unit 23b, and the signal output unit 23b is connected to the elevator control device 30. The signal output unit 23b includes a power source and a load such as a coil.

Here, the positional relationship between the permanent magnet 21b and the reed switch 22b of the second interlayer displacement detector 20B will be described in detail with reference to FIG.
FIG. 2 is a cross-sectional view taken along the line II-II shown in FIG. The permanent magnet 21a and the reed switch 22a of the first interlayer shift detector 20A are the same as those in FIG.

  In FIG. 2, a magnet fixing portion 1 is joined to the lower end portion of the upper layer shaft 11 </ b> N, and a permanent magnet 21 b is embedded and fixed to the magnet fixing portion 1. The permanent magnet 21b has an N extreme surface and an S extreme surface. For example, a plastic material is used for the magnet fixing portion 1.

  Further, the switch fixing portion 2 is joined to the outer surface of the upper part of the seismic isolation layer shaft 11K, and the reed switch 22b is embedded and fixed to the switch fixing portion 2. For example, a plastic material is used for the switch fixing portion 2.

  The reed switch 22b faces the N extreme surface of the permanent magnet 21b and is provided along the magnetization direction of the permanent magnet 21b. That is, the reed switch 22b is provided along a central axis that is perpendicular to the N extreme surface of the cylinder of the permanent magnet 21b and passes through the center of the cylinder. A gap C is provided between the reed switch 22b and the permanent magnet 21b. The gap C is set in advance within the operating range of the reed switch 22b. The reed switch 22b has two magnetic leads 221, 222, and these magnetic leads 221 and 222 are opened and closed according to a change in magnetic flux generated from the permanent magnet 21b.

Then, the structure of the elevator control apparatus 30 is demonstrated based on FIG.
FIG. 3 is a configuration diagram of the elevator control device 30.
In FIG. 3, the elevator control device 30 includes an input / output interface 31, a memory (information storage means) 32, and a CPU (processing means) 33 for controlling these. The memory 32 stores operating conditions in advance. The operation condition is a condition for restricting the operation of the car 12, and corresponds to, for example, low speed operation, stop of the nearest floor, and the like. The function of the CPU 33 will be described later.

  Next, the operations of the first and second interlayer displacement detectors 20A and 20B and the elevator control device 30 will be described with reference to FIGS. Here, the operation of the second interlayer displacement detector 20B and the elevator control device 30 when an interlayer displacement occurs between the upper layer shaft 11N and the seismic isolation layer shaft 11K will be described. The operation of the first interlayer displacement detector 20A and the elevator controller 30 when an interlayer displacement occurs between the lower layer shaft 11M and the seismic isolation layer shaft 11K is the second interlayer displacement detector 20B. And since it is the same as operation | movement of the elevator control apparatus 30, duplication description is abbreviate | omitted.

First, the operation of the second interlayer displacement detector 20B and the elevator control device 30 in the case of normal operation of the upper layer shaft 11N and the seismic isolation layer shaft 11K will be described with reference to FIG.
FIG. 4 is a diagram showing the positional relationship between the permanent magnet 21b and the reed switch 22b of the second interlayer displacement detector 20B in the normal case.

  In FIG. 4, the permanent magnet 21b emits magnetic lines 3 from the N extreme surface toward the reed switch 22b. The magnetic force line 3 passes from the N extreme surface of the permanent magnet 21b to the S extreme surface of the permanent magnet 21b through the vicinity of the contact point of the reed switch 22b. Due to the magnetic force lines 3, the magnetic leads 221 and 222 of the reed switch 22b are magnetized with the contact closed, and the reed switch 22b is closed. Specifically, one end of the magnetic lead 221 close to the N extreme surface of the permanent magnet 21b becomes the S pole, and the other end on the contact side becomes the N pole. On the other hand, one end on the contact side of the magnetic lead 222 becomes the S pole, contacts the N pole side end of the magnetic lead 221, and the other end becomes the N pole. As a result, an attractive force acts between the contact-side ends of the magnetic leads 221 and 222, and the reed switch 22b is closed.

  When the above-described reed switch 22b is closed, a current flows between the reed switch 22b and the signal output unit 23b, and the signal output unit 23 generates a close signal (a signal indicating that the contact of the reed switch 22b is closed). Output to the elevator control device 30.

  In the elevator control device 30, the CPU 33 inputs the closing signal from the signal output 23 b via the input / output interface 31, determines that there is no deviation between the layers based on the closing signal, and sets the car 12 to the normal operation mode. To control.

  Next, operations of the second interlayer displacement detector 20B and the elevator control device 30 when a displacement occurs between the upper layer shaft 11N and the seismic isolation layer shaft 11K will be described with reference to FIG.

  FIG. 5 is a diagram showing the positional relationship between the permanent magnet 21b and the reed switch 22b of the second interlayer displacement detector 20B when a displacement occurs between the upper layer shaft 11N and the seismic isolation layer shaft 11K.

  In FIG. 5, the upper layer shaft 11N is displaced in the horizontal direction by a deviation amount X with respect to the seismic isolation layer shaft 11K, and is fixed to the upper layer shaft 11N via the magnet fixing portion 1 by this displacement. The permanent magnet 21b moves by a deviation amount X in the horizontal direction. When the permanent magnet 21b moves, the magnetic force lines 3 generated from the permanent magnet 21b do not pass near the contact point of the reed switch 22b, and reach the S extreme surface from the N extreme surface of the permanent magnet 21b. That is, the magnetic flux to the magnetic material leads 221 and 222 decreases, and the reed switch 22b changes from the closed state to the open state, and detects the deviation between the layers.

  When the reed switch 22b is opened, no current flows between the reed switch 22b and the signal output unit 23b, and the signal output unit 23 sends an open signal (a signal indicating that the contact of the reed switch 22b is open) to the elevator. Output to the control device 30.

  In the elevator control device 30, the CPU 33 inputs an open signal from the signal output 23 b via the input / output interface 31, determines that there is a shift between the layers based on the open signal, and stores it in the memory 32. The car 12 is controlled according to the operating conditions. For example, the CPU 33 controls the car 12 at a low speed.

Here, the operation position and the return position of the permanent magnet 21b and the reed switch 22b of the second interlayer displacement detector 20B will be described with reference to FIG.
FIG. 6 is a diagram showing the operating position and return position of the permanent magnet 21b and the reed switch 22b of the second interlayer displacement detector 20B. In FIG. 6, the amount of deviation in the horizontal direction is the amount of deviation X in the X direction, but the amount of deviation Y in other horizontal directions (for example, the Y direction orthogonal to the X direction and the Z direction) is also X. This is the same as the direction displacement amount X.

  In FIG. 6, the operation curve d1 shows the reed switch 22b in relation to the amount of displacement X and Z in the X direction (horizontal direction) and Z direction (vertical direction) between the upper layer shaft 11N and the seismic isolation layer shaft 11K. Represents an operation of switching from an on state to an off state. In addition, the return curve d2 represents an operation in which the reed switch 22b is switched from the off state to the on state in the relationship between the deviation amounts X and Z.

  According to the operation curve d1, the reed switch 22b is switched from the on state to the off state at the next operation point due to a change in magnetic flux. For example, when the shift amount Z in the Z direction is fixed to the gap C and only the shift amount X in the X direction changes, the reed switch 22b switches from the on state to the off state when the shift amount increases from 0 to X2. . The deviation amount X that switches from the off state to the on state changes as the deviation amount Z in the Z direction changes. That is, if the deviation amount Z in the Z direction becomes smaller than the gap C, the reed switch 22b does not switch from the on state to the off state even when the deviation amount X becomes X2, and when the deviation amount X becomes larger than X2, the reed switch 22b is turned off. Switch to state. Further, if the deviation amount Z in the Z direction becomes larger than the gap C, the reed switch 22b is switched from the on state to the off state before the deviation amount Z becomes X2. When the amount of deviation Z in the Z direction becomes larger than the gap C1, the magnetic flux of the permanent magnet 21b does not act on the reed switch 22b, and the reed switch 22b is always turned off. Thus, the amount of deviation in the X and Z directions can be detected by the reed switch 22b. The amount of deviation in the Y direction can be similarly detected by the reed switch 22b.

  According to the return curve d2, the reed switch 22b switched to the OFF state returns from the OFF state to the ON state when the amount of deviation in the X and Z directions switched to the ON state becomes smaller due to hysteresis. .

  As described above, the second interlayer displacement detector 20B can detect the presence or absence of a displacement between the upper layer shaft 11N and the seismic isolation layer shaft 11K in a non-contact manner using a non-contact sensor. It becomes.

  The second interlayer displacement detector 20B uses a change in magnetic flux when a displacement occurs between the upper layer shaft 11N and the seismic isolation layer shaft 11K due to the combination of the reed switch 22b and the permanent magnet 21b. Thus, the presence / absence of a positional shift between the layers is detected. For this reason, due to the hysteresis, the deviation amount X1 in the X direction that becomes the return point of the reed switch 22b becomes smaller than the deviation amount X2 in the X direction that becomes the operating point of the reed switch 22b. Therefore, after the reed switch 22b operates from the on state to the off state, when the reed switch 22b that has been switched to the off state is returned to the on state in order to restart the car 12, the reed is performed while checking the output of the reed switch 22b. It is only necessary to return the switch 22b to the ON state and return the deviation amount X within a range that does not hinder the operation of the car 12. From the above, compared to the case where the reed switch 22b is switched from the off state to the on state using a measuring instrument that accurately measures the amount of deviation, the measurement can be performed at a lower cost because the measuring instrument is not used.

  Further, since the reed switch 22b faces the permanent magnet 21b and is provided along the magnetization direction of the permanent magnet 21b, the magnetic force from the permanent magnet 21b is almost evenly applied to the reed switch 22b and the reed switch 22b operates. Sensitivity can be made almost uniform. The permanent magnet 21b is a cylinder, and the reed switch 22b is provided along the central axis of the N extreme surface of the cylinder. Therefore, the reed switch 22b has substantially the same sensitivity (the operating point of the reed switch 22b is on the horizontal plane (on the entire horizontal plane including the X direction)) orthogonal to the center of the cylindrical end surface (N extreme surface) of the permanent magnet 21b. The same). Further, the reed switch 22b can detect the presence or absence of a shift between layers in a region in a three-dimensional direction including the horizontal direction (X direction) and the vertical direction (Z direction).

  The first interlayer displacement detector 20A obtains the same effect as that of the second interlayer displacement detector 20B described above between the lower layer shaft 11M and the seismic isolation layer shaft 11K.

  When the CPU 33 of the elevator control device 30 determines whether or not there is a shift between the layers based on the signals from the first and second interlayer shift detectors 20A and 20B, Since the operation of the car is controlled according to the set operating condition, the operation of the car 12 can be limited according to the operating condition.

  In the above embodiment, the case where the magnetic detection element is a reed switch has been described. However, for example, a semiconductor switching device may be used. Further, the installation locations of the permanent magnets 21a and 21b and the reed switches 22a and 22b are not limited to those in the above embodiment, and may be installed in other locations. For example, the permanent magnet 21b may be installed on the seismic isolation layer shaft 11K, and the reed switch 22b may be installed on the upper layer shaft 11N.

  Further, the first interlayer displacement detector 20A is installed between the lower layer shaft 11M and the seismic isolation layer shaft 11K, and the second interlayer displacement detector 20B is composed of the upper layer shaft 11N and the seismic isolation layer shaft. Although the case where it installed between 11K was demonstrated, you may change freely according to the structure of a seismic isolation building. For example, the interlayer displacement detector may be installed between the upper layer shaft 11N and the lower layer shaft 11M to detect the presence or absence of a displacement between the upper layer shaft 11N and the lower layer shaft 11M. Then, the CPU 33 of the elevator control device 30 determines whether the upper layer shaft 11N and the lower layer shaft 11M are based on a signal from an interlayer displacement detector that detects the presence or absence of the interlayer displacement between the upper layer shaft 11N and the lower layer shaft 11M. If there is a difference between the layers, and it is determined that there is a difference between the layers, the operation of the car 12 may be controlled according to the operation conditions stored in the memory 32.

  As described above, even if the above embodiment is changed, it is possible to obtain substantially the same effect as the above embodiment.

It is sectional drawing of the elevator shaft which concerns on embodiment of this invention. It is the II-II arrow sectional drawing shown in FIG. It is a block diagram of the elevator control apparatus shown in FIG. It is a figure which shows the positional relationship of the permanent magnet and reed switch of the 2nd interlayer shift | offset | difference detector in the case of normal time. It is a figure which shows the positional relationship of the permanent magnet and reed switch of a 2nd interlayer shift | offset | difference detector when a shift | offset | difference generate | occur | produces between the layers of an upper layer part shaft and a seismic isolation layer part shaft. It is a figure which shows the operation position and return position in the permanent magnet and reed switch of a 2nd interlayer shift | offset | difference detector.

Explanation of symbols

  10 Elevator shaft, 11M Lower layer shaft, 11K Seismic isolation layer shaft, 11N Upper layer shaft, 12 Car, 20A, 20B Interlayer displacement detector, 21a, 21b Permanent magnet, 22a, 22b Reed switch, 23a, 23b Signal output unit , 30 elevator control device, 32 memory, 33 CPU.

Claims (5)

A seismic isolation building interlayer displacement detector that detects the presence or absence of a displacement between each layer of a base isolation building provided with an elevator shaft,
The inter-layer displacement detector is a non-contact sensor that detects the presence / absence of displacement between the respective layers in a non-contact manner. The non-contact sensor detects presence / absence of a positional shift between the respective layers by using a magnetic flux change when a shift occurs between the respective layers by a combination of a magnetic detection element and a magnet. Item 1. A seismic isolation detector for a base-isolated building according to Item 1.   The interlayer displacement detector for a seismic isolation building according to claim 2, wherein the magnetic detection element faces the magnet and is provided along a magnetization direction of the magnet.   The seismic isolation building interlayer displacement detector according to claim 3, wherein the magnet is a cylinder, and the magnetic detection element is provided on a central axis of the cylinder. The presence or absence of a shift between the layers is determined based on a signal from the interlayer shift detector according to any one of claims 1 to 4, and when it is determined that there is a shift between the layers, a preset operation is performed. An elevator control device comprising processing means for controlling the operation of the car according to conditions.

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