JP5018045B2 - Elevator rope roll detection device - Google Patents

Description

  The present invention relates to an elevator rope roll detection apparatus that estimates and calculates the lateral vibration of an elevator rope caused by a slow roll of a building caused by an earthquake or strong wind.

  In the conventional elevator, the acceleration level of the building transverse vibration is set according to the height of the building for the accelerometer provided in the machine room, and when the set value is exceeded, the system shifts to control operation. . In this case, when a high-rise building continues to shake slowly at the primary natural frequency due to long-period earthquakes or strong winds, the acceleration level in the elevator machine room is small and the accelerometer does not reach the operating level, but the rope is Resonating with the roll of the motor, the amplitude becomes large, and there is a possibility of causing damage to the equipment due to contact with equipment in the hoistway. As a prior art to solve this problem, it consists of a wave energy sensor and an elevator unit control device. From the wave energy sensor, a strong wind signal indicating that a strong wind has been detected and a plurality of signals indicating the level are controlled by the unit. An elevator strong wind control operation method is known in which the unit control device performs control operation such as deceleration operation, standby on the intermediate floor or stop according to each strong wind level based on those signals. For example, see Patent Document 1).

JP-A-5-319720

  Although the conventional strong wind control system of elevators can capture slow shaking of the building, there is no basis for setting the detection level of the wave energy sensor, and how much the elevator rope is shaking There was a problem that I could not.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide an elevator rope roll detection device that estimates and calculates the lateral vibration of a rope caused by a slow roll of a building. To do.

An elevator rope roll detection device according to the present invention is an elevator rope roll detection device that detects the amount of rope roll caused by a slow swing of a building due to a long-period earthquake, strong wind, etc. The detection device has the maximum stop time required for the elevator to stop at the nearest floor, the minimum allowable run-out amount that is the minimum distance until the rope in the hoistway contacts the equipment in the hoistway, and the primary natural period of the building. a first rope roll detecting means for detecting a first acceleration level have a acceleration level calculator for calculating the rope roll building acceleration When more than several times the first acceleration level of seismic acceleration using, the rope A second unit having a rope lateral amplitude calculating unit that estimates and calculates the amount of rope roll using the amount of forced displacement from the building to be applied, the duration of shaking, and the natural frequency of the building. Rope roll detecting means, in which a operation mode selecting means for switching selectable the outputs of the second rope roll detecting means in the first rope roll detecting means.

In addition, the rope roll detection device has the maximum stop time required for the elevator to stop at the nearest floor, the minimum allowable run-out amount that is the minimum distance until the rope in the hoistway contacts the equipment in the hoistway, and the building with primary natural period have a acceleration level calculating unit for calculating a first acceleration level of seismic acceleration, the first rope roll detection building acceleration detecting the rope roll After the first acceleration level exceeding several times The second rope side having means for calculating and calculating the amount of rolling of the rope using the means, the amount of forced displacement from the building applied to the rope, the duration of shaking and the natural frequency of the building a shake detection means, the result of the first rope roll detecting means, the result of the second rope roll detecting means, it is intended to take both results as aND conditions.

  According to the present invention, when the rope resonates with the building vibration, the time until the rope vibration grows up and comes into contact with the equipment in the hoistway is taken into account. It is possible to suppress an increase in the amount of rope swing. In addition, since it was further equipped with a rope roll detection device that estimates and calculates the lateral vibration of the rope caused by the slow rolling of the building, and the control operation was performed using the lateral vibration of the rope obtained from it, Since the amount of rope roll is estimated according to the shaking of the building, it is possible to shift to control operation before the rope roll increases, and to suppress the amount of rope swing.

Embodiment 1.
FIG. 1 is a block diagram showing an elevator control device using the elevator roll roll detecting device according to Embodiment 1 of the present invention, and FIG. 2 is a diagram showing the relationship between building displacement and rope lateral amplitude in a general elevator. FIG. 3 is an explanatory diagram showing the relationship between the building displacement and the rope lateral amplitude, which is the basic principle of the first detecting means of the elevator roll roll detecting device according to Embodiment 1 of the present invention, and FIG. FIG. 5 is a flowchart for explaining a control operation using the first detecting means of the elevator roll roll detecting device in the first embodiment of the present invention, and FIG. 5 is the first elevator detecting means in the first embodiment of the present invention. FIG. 6 is an explanatory diagram showing an example of the control operation by the relationship between the building acceleration and the rope lateral amplitude, and FIG. 6 is the rope roll of the elevator according to Embodiment 1 of the present invention. FIG. 7 is an explanatory diagram showing rope roll caused by slow roll of the building, which is the basic principle of the second detecting means of the exit device, and FIG. 7 is a diagram of the elevator roll roll detecting device according to Embodiment 1 of the present invention. FIG. 8 is an explanatory diagram showing the relationship between the building displacement and the rope lateral amplitude, which is the basic principle of the detection means 2, FIG. 8 is an explanatory diagram showing the relationship between the envelope of the building displacement and the rope lateral amplitude when the building amplitude is constant, FIG. 10 is an explanatory diagram showing the relationship between the envelope of the building displacement and the rope lateral amplitude in the building amplitude that varies with time, and FIG. 10 is a control by the second detecting means of the rope roll rolling detector of the elevator according to Embodiment 1 of the present invention. FIG. 11 is a block diagram showing a process of calculating a driving level value, and FIG. 11 shows an example of a control operation using the second detecting means of the elevator roll roll detecting device according to the first embodiment of the present invention. It is a flow chart for Akira.

  In FIG. 1, reference numeral 1 denotes an elevator control device, which includes a CPU 2 and a storage device 3. The CPU 2 includes a first rope roll detection means comprising an acceleration level calculation unit 4 and a comparator 5, and a second rope roll detection comprising a timer 6, a building average amplitude calculation unit 7 and a rope roll amplitude calculation unit 8. And a control operation pattern selection unit 9. In addition, the storage device 3 includes a first parameter for the first rope roll detection means including a minimum allowable shake amount 10, a building natural vibration period 11 and a maximum stop time 12, a car position 13, a building natural frequency. 14 and the second parameter for the second rope roll detecting means comprising the rope information 15 is stored. 16 is an operation mode selection switch for selectively selecting the output of the first rope roll detection means and the output of the second rope roll detection means, and 17 is an accelerometer installed in an elevator machine room of the building. The acceleration information is sent to the comparator 5 of the CPU 2, the timer 6, and the average amplitude calculator 7 of the building. When a building acceleration exceeding a certain level is detected, the timer 6 starts its operation and sends the building shaking duration time to the building average amplitude calculation unit 7 and the rope lateral amplitude calculation unit 8.

一方、建物に設置した加速度計１７からの信号は（ステップＳ２）、建物の１次固有振動数付近のみを取り出すように、バンドパスフィルタをかけて（ステップＳ３）、エレベータの制御装置１に出力される。
そして、ステップＳ３で得られた建物の加速度信号を、第１の加速度レベルと比較する第１の比較器５ａを設ける。仮に建物加速度が第１の加速度レベルを超えたとしても、建物振動が単発的な揺れで、すぐに振動が収まることがある。その場合、ロープの横揺れは図２のように増大することはない。そこで、第１の比較器５ａでは、図５に示すように、建物加速度が複数回（回数Ｎで、Ｎは２以上である）、第１の加速度レベルを超えると、建物揺れが長時間に渡って持続すると考えて発報する。そのため、第１の比較器５ａの内部には、カウンタが付加的に設けられている（ステップＳ４）。
一方、単発的な建物揺れであっても、その揺れがある程度大きくなると、ロープ揺れに対して影響を与え、ロープ揺れが大きくなる。そこで、第１の加速度を少なくとも２倍したものを第２の加速度レベルとし（ステップＳ５）、建物加速度と比較する第２の比較器５ｂを設ける。この場合、建物加速度が第２の加速度レベルを超えた瞬間に発報させるため、第２の比較器５ｂにはカウンタを設けない（ステップＳ６）。
第１の比較器５ａと第２の比較器５ｂの出力をＯＲ回路に渡し（ステップＳ７）、いずれかが発報している場合は、長周期振動の管制運転に移行し、エレベータを最寄階に停止させる（ステップＳ８、Ｓ９）。一方、どちらも発報していない場合は、通常運転を継続する（ステップＳ８、Ｓ１０）。
図５の場合、１周期Ｔの間に、３回超えたら発報するとしており、監視時間ｔを周期ＴのＮ倍とすれば、ｔ = Ｔ×Ｎの時間内に、少なくとも２Ｎ回以上、第１の加速度レベルを超えるとした場合、持続的に建物振動が発生していると考えることができる。
なお、監視時間ｔを長く取り過ぎると、ロープの揺れが成長してしまう可能性がある。そこで、ｔは、最寄階に停止するまでに要する最大の時間以下であることが望ましい。

On the other hand, the signal from the accelerometer 17 installed in the building (step S2) is output to the elevator control device 1 by applying a band-pass filter (step S3) so as to extract only the vicinity of the primary natural frequency of the building (step S3). Is done.
And the 1st comparator 5a which compares the acceleration signal of the building obtained by step S3 with a 1st acceleration level is provided. Even if the building acceleration exceeds the first acceleration level, the building vibration may be a single vibration, and the vibration may immediately stop. In that case, the roll of the rope does not increase as shown in FIG. Therefore, in the first comparator 5a, as shown in FIG. 5, when the building acceleration exceeds the first acceleration level a plurality of times (N times is 2 or more), the building shakes for a long time. It is reported that it will last for a long time. Therefore, a counter is additionally provided in the first comparator 5a (step S4).
On the other hand, even if it is a single building swing, if the swing increases to some extent, it affects the rope swing and the rope swing increases. Therefore, a second comparator 5b that compares at least twice the first acceleration with the second acceleration level (step S5) and compares with the building acceleration is provided. In this case, the second comparator 5b is not provided with a counter in order to make a report at the moment when the building acceleration exceeds the second acceleration level (step S6).
The outputs of the first comparator 5a and the second comparator 5b are passed to the OR circuit (step S7). If any of them is reporting, the control shifts to the long-period vibration control operation, and the elevator is the closest. Stop at the floor (steps S8, S9). On the other hand, if neither is issued, normal operation is continued (steps S8 and S10).
In the case of FIG. 5, if it exceeds 3 times during one period T, if the monitoring time t is N times the period T, at least 2N times or more within the time of t = T × N, If the first acceleration level is exceeded, it can be considered that building vibration is continuously generated.
If the monitoring time t is set too long, the rope swing may grow. Therefore, t is preferably equal to or less than the maximum time required to stop at the nearest floor.

  Note that the first acceleration level and the second acceleration level set above are lower than the acceleration value of the low sensing operation set by the conventional earthquake detector. For this reason, in the case of a large earthquake in which low detection operates, the operation shifts to normal seismic control operation instead of long-period vibration control operation. In this case, the long-period vibration control operation function continues to operate independently of normal seismic control operation. Then, even after the automatic resetting of the low-sensing operation or the manual resetting of the high-sensing operation, you can monitor that the building continues to shake, and the rope is not in the normal seismic detector. It is possible to prevent the rope vibration from increasing due to resonance with the vibration.

  Furthermore, it is conceivable to provide a 0th acceleration level lower than the first acceleration level, and continue driving at a reduced speed. Specifically, α in FIG. 5 is set to a value smaller than the value at the time of setting the first acceleration level, for example, a half value. In this case, although there is a relatively small rope swing that does not cause the rope to catch, the traveling speed is reduced, so even if a malfunction occurs during traveling due to the rope swing, the elevator is quickly stopped, Safety can be ensured.

  According to the first embodiment, the output of the first rope roll detecting means and the output of the second rope roll detecting means are configured to be mutually selectable by the operation mode selection switch 16, thereby providing two types of The rope sway detection means can be realized by software, and the hardware configuration can be shared.

Embodiment 2.
In the first embodiment, the output of the first rope roll detecting means and the output of the second rope roll detecting means are configured to be mutually selectable by the operation mode selection switch 16, but this embodiment 2 In FIG. 2, the second rope roll detection means is guided by using the first acceleration level which is the detection result of the first rope roll detection means. For example, the first acceleration level a, which is the detection result of the first rope roll detection means, is used as the level 0 building acceleration comparison value a0 in the second rope roll detection means.
Thereby, a setting basis is given to the comparison value a0 of the building acceleration, and it can be set as a variable parameter.

Embodiment 3.
In the first embodiment, the output of the first rope roll detection means and the output of the second rope roll detection means are configured to be mutually selectable by the operation mode selection switch 16, but this third embodiment In FIG. 2, an AND condition is set for the detection result of the first rope roll detection means and the detection result of the second rope roll detection means. Thereby, the reliability of detection accuracy can be increased by making the detection means redundant.

Embodiment 4.
The first parameter for the first rope roll detection means comprising the minimum allowable shake amount 10, the building natural vibration period 11 and the maximum stop time 12 stored in the storage device 3, the car position 13, and the building natural frequency 14 The second parameter for the second rope roll detecting means comprising the rope information 15 can be set from an application on the personal computer. Thereby, the detection level of rope roll can be freely set or adjusted according to the construction property of the building.

  According to the fifth embodiment, an operation confirmation test at the seismic detection level, that is, the acceleration sensor level can be easily performed independently of the elevator system evaluation test. It can be unnecessary.

Embodiment 6.
FIG. 13 is a block diagram showing an elevator control device using the elevator roll roll detecting device in the sixth embodiment of the present invention, and shows a modification of the fifth embodiment.
In the sixth embodiment, the self-test signal itself from the self-test circuit 30 is not passed through the accelerometer 17, and the self-test switch 31 is switched to the self-test circuit 30 side, so that the control device 1 serves as a seismic acceleration detection signal. It is a modification in the case of generating in simulation inside. The self test circuit 30 may be built in the CPU 2.
That is, the circuit configuration of the self-test circuit 30 in the fifth embodiment is mainly for checking the operation of the accelerometer 17, whereas the circuit configuration of the self-test circuit 30 in the sixth embodiment is the first and second configurations. Mainly checks the operation of the rope roll detection means.

It is a block block diagram which shows the control apparatus of the elevator using the elevator rope roll rolling detection apparatus in Embodiment 1 of this invention. It is explanatory drawing which shows the relationship between the building displacement in a general elevator, and rope lateral amplitude. It is explanatory drawing which shows the relationship between the building displacement and rope lateral amplitude which are the basic principles of the 1st detection means of the rope roll rolling detector of the elevator in Embodiment 1 of this invention. It is a flowchart for demonstrating the control operation operation | movement using the 1st detection means of the rope roll rolling detector of the elevator in Embodiment 1 of this invention. It is explanatory drawing which shows an example of the control driving operation | movement by the 1st detection means of the elevator in Embodiment 1 of this invention by the relationship between a building acceleration and a rope lateral amplitude. It is explanatory drawing which shows the rolling of the rope which arises by the slow rolling of the building which is the basic principle of the 2nd detection means of the rope rolling detection apparatus of the elevator in Embodiment 1 of this invention. It is explanatory drawing which shows the relationship between the building displacement and rope lateral amplitude which are the basic principles of the 2nd detection means of the rope roll rolling detector of the elevator in Embodiment 1 of this invention. It is explanatory drawing which shows the relationship between the envelope of a building displacement in case a building amplitude is constant, and rope lateral amplitude. It is explanatory drawing which shows the relationship between the envelope of a building displacement in the building amplitude which changes with time, and rope lateral amplitude. It is a block diagram which shows the process of calculating the level value of the control operation by the 2nd detection means of the rope roll rolling detector of the elevator in Embodiment 1 of this invention. It is a flowchart for demonstrating the example of control operation using the 2nd detection means of the rope roll rolling detector of the elevator in Embodiment 1 of this invention. It is a block block diagram which shows the control apparatus of the elevator using the elevator rope roll rolling detection apparatus in Embodiment 5 of this invention. It is a block block diagram which shows the control apparatus of the elevator using the elevator roll roll detection apparatus in Embodiment 6 of this invention.

Explanation of symbols

Claims (5)

An elevator rope roll detection device that detects the amount of rope roll caused by slow shaking of buildings due to long-period earthquakes or strong winds,
The rope roll detection device is
Seismic acceleration using the maximum stop time required for the elevator to stop at the nearest floor, the minimum allowable runout that is the minimum distance until the rope in the hoistway contacts the equipment in the hoistway, and the primary natural period of the building a first rope roll detection means have a acceleration level calculating section, a building acceleration detecting the rope roll After the first acceleration level exceeds several times for calculating a first acceleration level,
A second rope roll detecting means having a rope lateral amplitude calculating section that estimates and calculates the amount of rope roll using the amount of forced displacement from the building applied to the rope, the duration of the shake, and the natural frequency of the building. When,
An operation mode selection means for selectively switching between the output of the first rope roll detection means and the output of the second rope roll detection means;
An elevator rope roll detection device characterized by comprising: An elevator rope roll detection device that detects the amount of rope roll caused by slow shaking of buildings due to long-period earthquakes or strong winds,
The rope roll detection device is
Seismic acceleration using the maximum stop time required for the elevator to stop at the nearest floor, the minimum allowable runout that is the minimum distance until the rope in the hoistway contacts the equipment in the hoistway, and the primary natural period of the building a first rope roll detection means have a acceleration level calculating section, a building acceleration detecting the rope roll After the first acceleration level exceeds several times for calculating a first acceleration level,
A second rope roll detecting means having a rope lateral amplitude calculating section that estimates and calculates the amount of rope roll using the amount of forced displacement from the building applied to the rope, the duration of the shake, and the natural frequency of the building. And
The elevator roll roll detecting apparatus characterized in that the second rope roll detecting means is guided using an acceleration level as a result of the first rope roll detecting means. An elevator rope roll detection device that detects the amount of rope roll caused by slow shaking of buildings due to long-period earthquakes or strong winds,
The rope roll detection device is
Seismic acceleration using the maximum stop time required for the elevator to stop at the nearest floor, the minimum allowable runout that is the minimum distance until the rope in the hoistway contacts the equipment in the hoistway, and the primary natural period of the building a first rope roll detection means have a acceleration level calculating section, a building acceleration detecting the rope roll After the first acceleration level exceeds several times for calculating a first acceleration level,
A second rope roll detecting means having a rope lateral amplitude calculating section that estimates and calculates the amount of rope roll using the amount of forced displacement from the building applied to the rope, the duration of the shake, and the natural frequency of the building. And
Results and the results of the second rope roll detector, rope roll detection device for an elevator, characterized in that take both results as an AND condition of the first rope roll detecting means.   Set parameters such as maximum stop time, minimum allowable runout, primary natural period of the building, forced displacement from the building applied to the rope, duration of shaking, and natural frequency of the building from the application on the PC. The elevator roll roll detecting device according to any one of claims 1 to 3.   Using the self-test circuit that generates a detection signal of earthquake acceleration in a simulated manner and the self-test signal from the self-test circuit, the operation check of the first rope roll detection means and the second rope roll detection means is performed. The elevator roll roll detection device according to any one of claims 1 to 3, further comprising self-diagnosis means for performing the operation.

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