JP4992509B2 - Elevator rope roll detection device and elevator control operation device - Google Patents

Description

  The present invention uses an elevator rope roll detection device 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, and the lateral vibration of the rope obtained therefrom. The present invention relates to a control operation device for an elevator that performs control operation.

  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. Moreover, it aims at providing the control operation apparatus of the elevator which performs control operation using the lateral vibration of the rope obtained from it.

The elevator roll roll detection device according to the present invention is an elevator rope roll detection device that detects an amount of roll roll caused by a slow swing of a building due to a long-period earthquake, strong wind, etc. The equipment is the absolute value of the building displacement at at least one location of the building, or the amplitude of the building displacement applied to the rope evaluated with the integral value obtained by averaging the absolute value of the building acceleration over time, the duration of the swing, the attenuation rate of the rope, And a rope lateral amplitude calculation unit that estimates and calculates the roll amount of the rope using the natural frequency of the building.

  Further, in the elevator control operation device according to the present invention, when the elevator roll roll detection device is used to automatically return to normal operation after the elevator stops, the rope roll calculated by the rope horizontal amplitude calculation unit is used. It automatically returns on condition that the amount is below the set level.

  According to the present invention, it is provided with an elevator rope roll detection device that estimates and calculates the lateral vibration of a rope caused by a slow roll of a building, and performs control operation using the lateral vibration of the rope obtained therefrom. Because the amount of roll 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, By the convergence of the shaking, it can be automatically restored quickly.

Embodiment 1.
FIG. 1 is a block diagram showing an elevator control apparatus using an elevator rope roll detection apparatus according to Embodiment 1 of the present invention, and FIG. 2 is an elevator rope roll detection apparatus according to Embodiment 1 of the present invention. FIG. 3 is an explanatory view showing rope roll caused by slow roll of the building, which is the basic principle, and FIG. 3 is a diagram showing building displacement and rope roll amplitude, which are the basic principles of the elevator roll roll detecting device according to Embodiment 1 of the present invention. FIG. 4 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, and FIG. 5 is the envelope and the rope of the building displacement at the building amplitude that varies with time. FIG. 6 is an explanatory diagram showing the relationship between the lateral amplitudes, and FIG. 6 calculates the level value of the control operation by the elevator roll roll detecting device according to the first embodiment of the present invention. FIG. 7 is a flow chart for explaining an example of a control operation using the elevator roll roll detecting device according to the first embodiment of the present invention. FIG. 8 is a flowchart of the elevator according to the first embodiment of the present invention. It is explanatory drawing which shows the automatic return operation | movement using a rope roll detection apparatus.

  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 timer 4, a building average amplitude calculation unit 5, a rope lateral amplitude calculation unit 6, and a control operation pattern selection unit 7. Further, the storage device 3 stores a car position 8, a building natural frequency 9, rope information 10, and the like. Reference numeral 11 denotes an accelerometer installed in an elevator machine room or the like of the building, and sends building acceleration information to the timer 4 of the CPU 2 and the average amplitude calculation unit 5 of the building. When a building acceleration exceeding a certain level is detected, the timer 4 starts its operation, and sends the building shaking duration to the building average amplitude calculator 5 and the rope lateral amplitude calculator 6.

Next, the lateral amplitude of the rope caused by the slow rolling of the building will be described with reference to FIG.
In FIG. 2, 12 is a hoistway provided in the building, 13 is an elevator car, 14 is a hoisting machine provided in the elevator machine room, 15 is a main rope wound around the hoisting machine 14, and the car 13 Connect a counterweight (not shown). Reference numeral 16 denotes a balancing rope, which connects the car 13 and a balancing weight (not shown). 17 is a governor rope and 18 is a control cable.

The specific method will be described below with reference to FIG.
・ Control operation level value

・ Level 0 (Monitoring mode)

・ Level 1 (control operation start)

・ Level 2 (Determining whether or not evacuation is possible)

・ Level 3 (Forced termination during evacuation operation)

・ Conditions for automatic recovery

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 roll of a rope which arises by the slow roll of the building which is the basic principle of the rope roll detection apparatus of the elevator in Embodiment 1 of this invention. It is explanatory drawing which shows the relationship between the building displacement and the rope lateral amplitude which are the basic principles of the elevator roll roll detection apparatus 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 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 rope roll rolling detector of the elevator in Embodiment 1 of this invention. It is explanatory drawing which shows the automatic return operation | movement using the rope roll-rolling detection apparatus of the elevator in Embodiment 1 of this invention.

Explanation of symbols

1 Elevator control device 2 CPU
DESCRIPTION OF SYMBOLS 3 Memory | storage device 4 Timer 5 Building average amplitude calculating part 6 Rope lateral amplitude calculating part 7 Control operation pattern selection part 8 Car position 9 Building natural frequency 10 Rope information 11 Accelerometer 12 Hoistway 13 Elevator car 14 Hoisting machine 15 Main rope 16 Balance rope 17 Governor rope 18 Control cable

Claims (2)

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 rolling detection device includes an absolute value of a building displacement at at least one location of a building or an amplitude of a building displacement applied to a rope evaluated by an integral value obtained by averaging the absolute values of building acceleration , a duration of shaking, a rope An elevator rope roll detection device comprising a rope roll amplitude calculation unit that estimates and calculates the amount of roll roll using the damping rate and the natural frequency of the building.   When the elevator roll roll detection device according to claim 1 is used to automatically return to normal operation after the elevator stops, the roll roll amount calculated by the rope horizontal amplitude calculation unit is below the set level. An elevator control operation device that automatically returns on the condition.

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