CN110077926B - Elevator and adjusting method of vibration damping mechanism thereof - Google Patents
Elevator and adjusting method of vibration damping mechanism thereof Download PDFInfo
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- CN110077926B CN110077926B CN201811233221.8A CN201811233221A CN110077926B CN 110077926 B CN110077926 B CN 110077926B CN 201811233221 A CN201811233221 A CN 201811233221A CN 110077926 B CN110077926 B CN 110077926B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/026—Attenuation system for shocks, vibrations, imbalance, e.g. passengers on the same side
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0037—Performance analysers
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- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Elevator Control (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention provides an elevator and a method for adjusting a vibration damping mechanism thereof, which can accurately distinguish artificial vibration or vibration caused by deformation of a guide rail and automatically adjust control parameters only aiming at the vibration caused by the deformation of the guide rail. The control parameter calculating section determines that the acceleration detected at the determined position is caused by artificial vibration and restricts execution of calculation related to the adjustment amount of the control parameter, when the acceleration is not detected at the determined position, and only when the acceleration is detected at the determined position, as a result of the comparison by the acceleration comparing section, when the car is unloaded.
Description
Technical Field
The present invention relates to an elevator and a method for adjusting a vibration damping mechanism thereof, and is particularly preferably applied to an elevator including a vibration damping mechanism portion for suppressing vibration of a car in a horizontal direction.
Background
Generally, horizontal vibration of a car in an elevator is generated by a mounted state of a guide rail, a displacement from a counterweight, or the like. In a conventional elevator, a vibration damping mechanism is provided in a guide device or the like in order to suppress the horizontal vibration. Conventionally, as a method of adjusting the vibration damping mechanism, when an elevator is installed, a car is first raised and lowered without operating the vibration damping mechanism, a disturbance caused by a guide rail or the like is estimated from an acceleration obtained at this time, and a control parameter for controlling a control actuator of the vibration damping mechanism is automatically calculated based on the estimated disturbance (see patent document 1).
Prior art documents
Patent document
Patent document 1
Japanese patent laid-open publication No. 2016-41620
Disclosure of Invention
Problems to be solved by the invention
However, an elevator is a device that operates continuously for more than 20 years from installation. Therefore, the deformation of the guide rail gradually increases from the initial installation state due to the influence of the sinking of the building itself or the like. This increases the horizontal vibration, and reduces the vibration damping performance in the initial control parameters. In order to correct the increase in horizontal vibration due to the deformation of the guide rails caused by this aging, readjustment of the control parameters by a maintenance person or the like has been carried out, but in view of the recent increasing trend of high-rise buildings, there is a concern about an increase in maintenance time due to the adjustment time of the control parameters, and therefore, there is a demand for automatic adjustment of the control parameters during normal operation of the elevator.
The problem of performing automatic adjustment during normal elevator operation is that automatic calculation is required based on acceleration data during passenger riding, and in this case, control parameters are adjusted only for vibration caused by deformation of the guide rail while accurately distinguishing between artificial vibration and vibration caused by deformation of the guide rail.
In addition, most of the control parameters are calculated based on acceleration data in the no-load state, and when a load is applied to reduce the vibration, the same control parameters may be used to amplify the vibration.
The present invention has been made in view of the above problems, and provides an elevator and a method for adjusting a vibration damping mechanism thereof, which can reduce the burden of maintenance work and more accurately and automatically suppress horizontal vibration of a car due to deformation of a guide rail caused by aging.
Means for solving the problems
In order to solve the above problem, the present invention provides an elevator comprising: a vibration damping mechanism unit for suppressing vibration of the car in the horizontal direction by operating the control actuator according to a set control parameter; an acceleration detection unit that detects an acceleration of the car in a horizontal direction; a load detection unit that detects a load amount in the car; a position detection unit that detects a position of the car in a vertical direction in a hoistway in which the car is lifted; an acceleration storage unit that accumulates, for each load amount and position in the car, the horizontal direction accelerations of the car sequentially detected by the acceleration detection unit; an acceleration comparison unit that compares, based on the acceleration of the car in the horizontal direction accumulated for each load amount and position in the car in the acceleration storage unit, the acceleration of the car detected when the load amount in the car is no load with the acceleration of the car detected when the load amount in the car is not no load; and a control parameter calculating portion that, in a case where, as a result of the comparison by the acceleration comparing portion, an acceleration in a horizontal direction is detected at a certain position of the car in the hoistway both when the load amount in the car is no load and when the car is not no load, and the acceleration in the horizontal direction exceeds a given value, performs adjustment amount calculating processing of calculating an adjustment amount of the control parameter such that the acceleration detected by the acceleration detecting portion at the certain position is within the given value in the future, and in a case where, as a result of the comparison by the acceleration comparing portion, the acceleration is not detected at the certain position when the car is no load, and only if the acceleration is detected at the certain position when the car is not no load, the control parameter calculating portion judges that the acceleration detected at the certain position is caused by artificial vibration, and limiting execution of the calculation related to the adjustment amount of the control parameter.
Further, according to the present invention, there is provided a method of adjusting a vibration damping mechanism of an elevator, the elevator including: a vibration damping mechanism unit configured to suppress vibration of the car in a horizontal direction by operating a control actuator according to a set control parameter; an acceleration detection unit that detects an acceleration of the car in a horizontal direction; and a load detection unit that detects a load amount in the car, the vibration damping mechanism adjustment method including: a position detection step of detecting a position of the car in a vertical direction in the hoistway using a position detection unit; an acceleration storage step of accumulating the horizontal accelerations of the car sequentially detected by the acceleration detection unit in the acceleration storage unit for each load amount and position in the car; an acceleration comparison step of comparing, by an acceleration comparison unit, an acceleration of the car detected when the load amount in the car is no load with an acceleration of the car detected when the load amount in the car is not no load, based on the acceleration of the car in the horizontal direction accumulated for each load amount and position in the car in the acceleration storage unit; a control parameter adjusting step of, when, as a result of the comparison in the acceleration comparing step, acceleration in a horizontal direction is detected at a certain position of the car in the hoistway both when the load amount in the car is no load and when the car is not no load, and the acceleration in the horizontal direction exceeds a given value, executing adjustment amount calculating processing of calculating an adjustment amount of the control parameter so that acceleration detected by the acceleration detecting section at the certain position in the future is within the given value; and a readjustment limiting step of, when no acceleration is detected at the determined position when the car is unloaded as a result of the comparison by the acceleration comparing portion, and only when acceleration is detected at the determined position when the car is not unloaded, determining that the acceleration detected at the determined position is caused by artificial vibration, and limiting execution of calculation of the control parameter calculating portion regarding an adjustment amount of the control parameter.
Effects of the invention
According to the present invention, it is possible to reduce the burden of maintenance work and more accurately and automatically suppress horizontal vibration of the car due to deformation of the guide rail due to aging.
Drawings
Fig. 1 is a conceptual configuration diagram showing a configuration example of an elevator vibration damping mechanism device according to the present embodiment.
Fig. 2 is a flowchart showing an example of processing steps of the method for adjusting the vibration damping mechanism of the elevator according to the present embodiment.
Description of the reference numerals
1 cage room
2 cage frame
3 load sensor
4 guide device
5 Rotary encoder
6 control panel
7 report part
8 position calculating part
9 load calculation section
10 damping mechanism control unit
11 acceleration calculating part
12 load capacity storage unit
13 acceleration storage unit
14 acceleration comparing part
15 control parameter calculating part
16 control parameter storage unit
Detailed Description
Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.
(1) System architecture
Fig. 1 is a structural diagram of an elevator according to the present embodiment. The elevator car includes a car room 1 for people to get on and off the elevator, and a car frame 2 provided outside the car room 1. A load sensor 3 for detecting the load amount in the car chamber 1 is provided between the car chamber 1 and the car frame 2.
The car frame 2 is provided with a guide device 4 for integrally raising and lowering the car room 1 and the car frame 2 as a car along guide rails (not shown) provided in a hoistway (not shown). The guide device 4 is provided with a vibration damping mechanism, not shown. Here, the guide rail is deformed due to aging, and therefore, as described later, the vibration damping mechanism section operates the control actuator according to the set control parameter (and the adjustment amount thereafter), thereby suppressing vibration of the car in the horizontal direction. The vibration damping mechanism section can operate or deactivate the control actuator according to the setting.
The car frame 2 is provided with an acceleration sensor, not shown, which detects an acceleration in a horizontal direction of the car that moves up and down in a vertical direction in the hoistway. In the present embodiment, although the damping mechanism control unit 10 is shown separately for convenience of explanation, the car frame 2 is provided with a damping mechanism control unit for controlling the damping mechanism. Although the description has been given of the case where these components are provided in the car frame 2 as an example, the components may be provided as a part of a car including the car frame 2 and the car room 1.
The damping mechanism control unit 10 includes: an acceleration calculation unit 11 that calculates acceleration based on the detection result of the acceleration sensor; an acceleration storage unit 13 that stores acceleration data relating to the acceleration calculated in this manner; a load storage unit 12 for storing the load; an acceleration comparison unit 14 that compares the acceleration data with each other as described later; a control parameter calculation unit 15 for calculating a control parameter from the acceleration data; and a control parameter storage unit 16 that stores a control parameter for each load amount and each position in the vertical direction in the lifting/lowering passage based on the detection result of the load sensor 3 (hereinafter also referred to as "control parameter for each load amount/position").
First, the control parameters are initially adjusted at the time of installation of the elevator, and are stored in the control parameter storage section 16 for each load amount/position. Then, as described in the present embodiment below, the control parameters are adjusted.
On the other hand, the not-shown machine room is provided with a not-shown hoist and a not-shown governor in addition to the control panel 6. At least one of the hoisting machine and the governor is provided with a rotary encoder 5 for detecting the position of the car.
The acceleration calculation unit 11 calculates acceleration data in the horizontal direction of the car using a detection result obtained from the acceleration sensor by the car traveling in the hoistway, and stores the acceleration data in the acceleration storage unit 13.
The acceleration comparing section 14 compares the acceleration of the car detected when the load amount in the car is no load with the acceleration of the car detected when the load amount in the car is not no load, based on the acceleration of the car in the horizontal direction accumulated for each load amount and position in the car in the acceleration storage section 13.
When the determined position of the car in the hoistway is detected both when the load amount in the car is no load and when it is not no load as a result of the comparison by the acceleration comparing section 14, and when the acceleration in the horizontal direction exceeds a given value, the control parameter calculating section 15 calculates the adjustment amount of the control parameter so that the acceleration detected by the acceleration sensor at the determined position in the future is within the given value.
In the case where, as a result of the comparison by the acceleration comparing section 14, no acceleration is detected at a specified position when the car is unloaded, and only when the car is not unloaded, acceleration is detected at the specified position, the control parameter calculating section 15 determines that the acceleration detected at the specified position is caused by artificial vibration, and restricts execution of calculation relating to the adjustment amount of the control parameter.
The control parameter calculation unit 15 calculates the adjustment amount of the control parameter, collects acceleration data for each load amount and position again, and repeats the same process until the acceleration data falls within the predetermined value. Here, the set value is variably set for each load amount. In this way, the control parameters are accurately and appropriately adjusted by each load amount.
On the other hand, the control panel 6 includes: a load amount calculation unit 9 for calculating a load amount based on a detection result of the load sensor 3; a position calculation unit 8 that calculates the position of the car in the vertical direction in the hoistway based on the detection result of the rotary encoder 5; and a reporting unit 7 for reporting to a maintenance worker at the time of abnormality detection.
The position calculating unit 8 calculates a position at which an acceleration sensor, not shown, detects the acceleration of the car in the horizontal direction in the hoistway based on the detection result of the rotary encoder 5, and stores the position in the acceleration storage unit 13 together with the calculated acceleration data. Thereby, the acceleration data for each load amount/position is sequentially accumulated in the acceleration storage section 13.
When automatically calculating the adjustment amount of the control parameter, the load amount calculating unit 9 calculates the load amount in the car based on the detection result of the load sensor 3 and stores load amount data on the load amount in the load amount storage unit 12 so as not to perform unnecessary distribution of the control parameter in accordance with the artificial vibration.
Even if the adjustment amount of the control parameter is calculated a predetermined number of times by the control parameter calculation unit 15, the notification unit 7 also notifies an external (e.g., maintenance person) of an abnormality because the adjustment of the guide rail is necessary when the acceleration of the car detected after the acceleration sensor is not equal to or less than the predetermined value.
However, as described above, when the years and months have passed after the installation of the elevator, the horizontal vibration of the car increases due to the deformation of the guide rail such as the sinking of the building itself, and the vibration damping capability decreases. To prevent this, in the present embodiment, in order to automatically adjust the control parameters, the position in the vertical direction of the car in the hoistway based on the detection result of the rotary encoder 5 and the load amount calculated from the detection result of the load sensor 3 are used.
(2) Method for adjusting vibration damping mechanism
Fig. 2 is a flowchart showing an example of processing steps of the method for adjusting the vibration damping mechanism of the elevator according to the present embodiment.
First, the vibration damping mechanism portion is confirmed to be effective (step S1). If the vibration damping mechanism is not active, the vibration damping mechanism is activated (step S2). Next, the load amount calculation unit 9 calculates the load amount in the car based on the detection result of the load sensor 3 (step S3), and determines whether the car is unloaded, i.e., no person is sitting on the car, or whether the car is not sitting on the car, based on the load amount (hereinafter, also referred to as "loaded") (step S4).
When the car is loaded, the load amount calculation unit 9 stores the load amount data and the acceleration data, which are related to the load amount of the car, in the load amount storage unit 12 so as to be associated with each other (step S6).
On the other hand, the control panel 6 moves the car up and down in the hoistway, collects acceleration data of the case where there is no load and the case where there is a load (not no load) in an acceleration sensor (not shown), and accumulates the acceleration data in the acceleration storage unit 13 in accordance with the position of the car in the hoistway (steps S5 and S7).
When the collected acceleration data exceeds the predetermined value (step S8), the acceleration comparing section 14 compares the acceleration of the car detected when the load amount in the car is no load with the acceleration of the car detected when the load amount in the car is not no load, based on the acceleration of the car in the horizontal direction accumulated for each load amount and position in the car in the acceleration storage section 13 (step S9).
As described above, in the case where the determined position of the car in the hoistway is detected as acceleration in the horizontal direction both when the load amount in the car is no load and not when no load is present as a result of the comparison by the acceleration comparing section 14, and the acceleration in the horizontal direction exceeds a given value, the control parameter calculating section 15 performs, for example, periodically an adjustment amount calculating process of calculating the adjustment amount of the control parameter so that the acceleration detected by the acceleration sensor at the determined position in the future is within the given value.
In the present embodiment, as a result of the comparison by the acceleration comparing section 14, when the car is unloaded, no acceleration is detected at the specified position, and only when the car is not unloaded, the acceleration is detected at the specified position (step S10), the control parameter calculating section 15 determines that the acceleration detected at the specified position is caused by artificial vibration, and restricts the execution of the calculation relating to the adjustment amount of the control parameter.
In this case, the control parameter calculation unit 15 calculates the control parameter from the other acceleration data (step S11). In this way, artificial vibrations can be excluded and the control parameters can be adjusted more accurately.
On the other hand, when it is determined that the vibration is not caused by the artificial vibration, the control parameter calculation unit 15 calculates the control parameter for each load amount/position as described above (step S12).
The control panel 6 collects acceleration again using an acceleration sensor (not shown) during the next operation based on the control parameters calculated in the above steps S11 and 12 (step S13), and stores the control parameters for each load amount and position in the control parameter storage unit 16 (step S17) when the collected acceleration decreases (step S14).
When the acceleration due to the vibration is not reduced (step S14), the control parameter calculation unit 15 counts up the counter by the number of times the control parameter is adjusted (corresponding to the number of times the control parameter is adjusted as shown) (step S15), and when the number of times does not exceed the predetermined value (step S16), calculates the control parameter again (step S10), and when the number of times exceeds the predetermined value, causes the notification unit 7 to externally notify the maintenance worker of the adjustment request for the guide rail (step S18).
According to the present embodiment, it is possible to distinguish artificial vibrations from an increase in horizontal vibration due to an increase in deformation of the guide rail, and to accurately assign or automatically adjust the control parameters. The operation of the elevator using such control parameters can improve comfort, reduce the burden of maintenance work, and more accurately and automatically suppress horizontal vibration of the car due to deformation of the guide rail caused by aging.
(3) Other embodiments
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention to these embodiments. The present invention can be implemented in various forms without departing from the gist thereof.
Industrial applicability
The present invention can be widely applied to an elevator provided with a vibration damping mechanism that suppresses vibration of a car in the horizontal direction.
Claims (6)
1. An elevator is provided with:
a vibration damping mechanism unit for suppressing vibration of the car in the horizontal direction by operating the control actuator according to a set control parameter;
an acceleration detection unit that detects an acceleration of the car in a horizontal direction;
a load detection unit that detects a load amount in the car;
a position detection unit that detects a position of the car in a vertical direction in a hoistway in which the car is lifted;
an acceleration storage unit that accumulates the horizontal accelerations of the car sequentially detected by the acceleration detection unit for each load amount and position in the car;
an acceleration comparison unit that compares, based on the acceleration of the car in the horizontal direction accumulated for each load amount and position in the car in the acceleration storage unit, the acceleration of the car detected when the load amount in the car is no load with the acceleration of the car detected when the load amount in the car is not no load; and
a control parameter calculation section that, when, as a result of the comparison by the acceleration comparison section, acceleration in a horizontal direction is detected at a certain position of the car in the hoistway both when the amount of load in the car is no load and when it is not, and the acceleration in the horizontal direction exceeds a given value, performs adjustment amount calculation processing that calculates an adjustment amount of the control parameter so that the acceleration detected by the acceleration detection section at the certain position in the future is within the given value;
in a case where, as a result of the comparison by the acceleration comparing section, no acceleration is detected at the determined position when the car is unloaded, and only when the car is not unloaded, acceleration is detected at the determined position, the control parameter calculating section determines that the acceleration detected at the determined position is caused by artificial vibration, and restricts execution of calculation relating to an adjustment amount of the control parameter.
2. Elevator according to claim 1,
the elevator is provided with a control parameter storage part for storing the control parameters,
the control parameter calculation unit updates the control parameter stored in the control parameter storage unit based on the recalculated adjustment amount of the control parameter.
3. Elevator according to claim 2,
the control parameter calculation unit calculates the adjustment amount of the control parameter at least once, and then calculates the adjustment amount of the control parameter again when the acceleration detected again by the acceleration detection unit exceeds the predetermined value when the car travels in the hoistway next time, and updates the control parameter stored in the control parameter storage unit.
4. Elevator according to claim 2 or 3,
the elevator is provided with: and a reporting unit configured to report to the outside an abnormality when the acceleration of the car detected by the acceleration detecting unit after the adjustment amount of the control parameter is calculated by the control parameter calculating unit a predetermined number of times is not equal to or less than a predetermined value even when the adjustment amount of the control parameter is calculated by the control parameter calculating unit a predetermined number of times.
5. Elevator according to any one of claims 1-3,
the given value to be compared with the acceleration of the car detected by the acceleration detecting portion is set for each load amount detected by the load detecting portion.
6. An elevator damping mechanism adjusting method, the elevator comprising: a vibration damping mechanism unit for suppressing vibration of the car in the horizontal direction by operating the control actuator according to a set control parameter; an acceleration detection unit that detects an acceleration of the car in a horizontal direction; and a load detection unit that detects a load amount in the car, wherein the vibration damping mechanism adjustment method includes:
a position detection step of detecting a position of the car in a vertical direction in the hoistway using a position detection unit;
an acceleration storage step of accumulating the horizontal accelerations of the car sequentially detected by the acceleration detection unit in the acceleration storage unit for each load amount and position in the car;
an acceleration comparison step of comparing, by an acceleration comparison unit, an acceleration of the car detected when the load amount in the car is no load with an acceleration of the car detected when the load amount in the car is not no load, based on the acceleration of the car in the horizontal direction accumulated for each load amount and position in the car in the acceleration storage unit;
a control parameter adjusting step of, when, as a result of the comparison in the acceleration comparing step, acceleration in a horizontal direction is detected at a certain position of the car in the hoistway both when the load amount in the car is no load and when the car is not no load, and the acceleration in the horizontal direction exceeds a given value, executing adjustment amount calculating processing of calculating an adjustment amount of the control parameter so that acceleration detected by the acceleration detecting section at the certain position in the future is within the given value; and
a readjustment limiting step of, when no acceleration is detected at the specified position when the car is unloaded and only when acceleration is detected at the specified position when the car is not unloaded as a result of the comparison by the acceleration comparing portion, determining that the acceleration detected at the specified position is caused by artificial vibration, and limiting execution of calculation of the control parameter calculating portion regarding the adjustment amount of the control parameter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018012099A JP6826548B2 (en) | 2018-01-26 | 2018-01-26 | Elevator and this vibration damping mechanism adjustment method |
| JP2018-012099 | 2018-01-26 |
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| Publication Number | Publication Date |
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| CN110077926A CN110077926A (en) | 2019-08-02 |
| CN110077926B true CN110077926B (en) | 2020-09-11 |
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| CN201811233221.8A Active CN110077926B (en) | 2018-01-26 | 2018-10-22 | Elevator and adjusting method of vibration damping mechanism thereof |
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| CN (1) | CN110077926B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021057635A1 (en) * | 2019-09-23 | 2021-04-01 | 猫岐智能科技（上海）有限公司 | Method for determining device movement abnormality, and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002187680A (en) * | 2000-12-22 | 2002-07-02 | Toshiba Corp | Car frame attitude control device and elevator equipped with it |
| JP4732580B2 (en) * | 2000-12-25 | 2011-07-27 | 東芝エレベータ株式会社 | Elevator equipment |
| JP2011105435A (en) * | 2009-11-16 | 2011-06-02 | Toshiba Elevator Co Ltd | Elevator vibration damping system |
| JP6173752B2 (en) * | 2013-04-10 | 2017-08-02 | 株式会社日立製作所 | Elevator with vibration control device |
| JP6295166B2 (en) * | 2014-08-18 | 2018-03-14 | 株式会社日立製作所 | Elevator apparatus and vibration damping mechanism adjusting method thereof |
| JP6567922B2 (en) * | 2015-08-19 | 2019-08-28 | 株式会社日立製作所 | elevator |
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| JP2019127392A (en) | 2019-08-01 |
| JP6826548B2 (en) | 2021-02-03 |
| CN110077926A (en) | 2019-08-02 |
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