JP3978052B2 - Elevator main rope life diagnosis device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a life diagnosis device for an elevator main rope.
[0002]
[Prior art]
Conventionally, in the field of elevators, the elevator is stopped, and maintenance personnel visually check for deterioration such as wire breakage of the main rope, thereby diagnosing whether or not the main rope is at the end of its life. In this conventional diagnosis method, the maintenance staff needs to visually inspect the entire length of the main rope, and the labor of the maintenance staff is very large. While the maintenance staff visually inspects the entire length of the main rope, Therefore, there is a problem that it causes inconvenience for a long time to elevator customers.
[0003]
Therefore, in recent years, as an elevator main rope life diagnosis device for solving the above-mentioned conventional problems, for example, as described in JP-A-2001-19298, the traveling time of an elevator within a predetermined period is measured. Compare the measured value of the number of main rope bends calculated based on the travel time (measurement calculation value) and the main rope bend number of times determination value (life determination value) that has been confirmed in advance through experiments. Then, if the measured value of the number of times of bending of the main rope has reached the value of the number of times of bending of the main rope, it is determined that the life of the main rope, and without stopping the elevator for a long time, A product that enables life diagnosis is being developed.
[0004]
[Problems to be solved by the invention]
However, the life of the main rope is influenced not only by the number of times the main rope is bent, but also by operating items other than the number of times of bending, such as the time during which the main rope does not operate, in other words, the cumulative stop time of the elevator within a predetermined period. I know that
[0005]
That is, for example, when the elevator is operated after the elevator has been stopped for a long time, the lubricating oil impregnated in the hemp constituting the core material of the operating main rope constitutes the outer periphery of the operating main rope. Since the surface of the strand does not reach the surface of the strand, rust is generated on the surface of the strand early, or the surface of the strand of wire is prematurely worn. It has been found that the life of the main rope will come before the number of bendings is reached.
[0006]
Therefore, in the elevator main rope life diagnosis device under development, the main rope may reach the end of its life before the measured number of bending times of the main rope reaches the life bending number judgment value of the main rope. There is a problem that the life diagnosis of the main rope cannot be performed accurately.
[0007]
The purpose of the present invention, in view of the above problems, without prolonged stopping the elevator, to provide a life diagnostic apparatus for elevators main rope that allows to accurately lifting of elevator main rope is there.
[0009]
[Means for Solving the Problems]
Upper Symbol purpose of the present invention, the bending number calculating unit for calculating a bending frequency measurement value of the main rope based on elevator travel time data for a predetermined period taken from the elevator control computer, elevator control computer A stop time calculation unit that calculates the accumulated stop time measurement value of the main rope based on the elevator travel time data for a predetermined period taken from the main rope, and the main rope set by checking the bending number measurement value and the experiment beforehand The measured value of the number of times of bending is compared with the measured value of the number of times of bending, and the measured value of the accumulated stop time is compared with the determined value of the life of the main rope. Either the bending number judgment value is reached or the accumulated stop time measurement value reaches the life judgment stop time. A life determination unit that determines that the main rope is at the end of life, and an inspection that indicates that the main rope must be inspected when the life determination unit determines that the main rope is at the end of its life This can be achieved by providing a life diagnosis device for an elevator main rope comprising the instruction notification unit.
[0010]
According to such a configuration, the life diagnosis of the main rope for the elevator can be performed without stopping the elevator for a long time by taking the travel time data for a predetermined period from the elevator control computer into the life diagnosis device. It can be performed, and not only the life due to the number of times the main rope is bent, but also the life due to the cumulative stop time of the main rope is judged, thus improving the life diagnosis accuracy of the main rope for elevators Can do.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a functional explanatory diagram of the life diagnosis device for an elevator main rope, and FIG. 2 is a flowchart showing a life diagnosis procedure by the life diagnosis device for an elevator main rope in FIG.
[0013]
In FIG. 1, a car 3 is connected to one end of a main rope 2 of the elevator 1 and a counterweight 4 is connected to the other end. The main rope 2 is wound around the sheave 5 and is operated in the vertical direction by rotating the sheave 5. The car 3 is moved up and down by the main rope 2 operating in the vertical direction.
[0014]
Control such as operation of the elevator 1 is performed by an elevator control panel 6 installed in a machine room or the like. A control computer 7 is built in the elevator control panel 6. The control computer 7 stores various operation measurement data such as the travel time data R0 of the elevator 1, and a life diagnosis device 8 for the main rope 2 is detachably connected thereto.
[0015]
As shown in FIG. 1, the life diagnosis device 8 for the main rope 2 includes an individual information input unit 8A, a cycle setting unit 8B, a bending number calculation unit 8C, a stop time calculation unit 8D, a life bending number database 8E, , At least a life stop time database 8F, a life determination unit 8G, and an inspection instruction notification unit 8H. When the elevator remote monitoring computer is installed in the elevator 1, the life diagnosis device 8 of the main rope 2 may be configured by modifying the elevator remote monitoring computer. If it is not installed, a new configuration may be used.
[0016]
The individual information input unit 8 </ b> A of the life diagnosis apparatus 8 has a function of inputting various information of the elevator 1 to the life diagnosis apparatus 8.
[0017]
The cycle setting unit 8B has a function of setting a cycle for performing the life diagnosis of the main rope 2, and the cycle is set to 1 month. This period can be appropriately changed by a command from the individual information input unit 8A.
[0018]
The bending number calculation unit 8C calculates a bending number measurement value N1 (bending number measurement calculation value) of the main rope 2 based on the travel time data R0 of the elevator 1 fetched from the control computer 7, and measures the bending number. It has a function of storing the value N1. The measured number of times of bending N1 is obtained by estimating and calculating the number of times of bending of the main rope 2 by the sheave 5 based on an arithmetic expression stored in advance in the bending number calculation unit 8C using the travel time data R0 as a variable.
[0019]
The stop time calculation unit 8D calculates a cumulative stop time measurement value T1 (cumulative stop measurement calculation value) of the main rope based on the travel time data R0 of the elevator 1 fetched from the control computer 7, and the cumulative stop time. It has a function of storing the measured value T1. The accumulated stop time measurement value T1 is obtained by cumulatively calculating the stop time in the travel time data R0 for a predetermined period.
[0020]
In the life bending number database 8E, the life bending number N0 of the main rope 2 that is transmitted from the individual information input unit 8A and confirmed in advance through experiments or the like (hereinafter referred to as a life bending number judgment value N0). Is remembered. The life stop time database 8F stores the life stop time T0 (hereinafter referred to as the life determination stop time T0) of the main rope 2 that is transmitted from the individual information input unit 8A and is set by confirming in advance through experiments or the like. Has been.
[0021]
The life determination unit 8G compares the measured number of bending times N1 of the main rope 2 with the life number of bending times determination value N0 of the main rope 2, and compares the accumulated stop time measured value T1 with the life determination stop time T0 of the main rope 2. Either the measured number of bending times N1 of the main rope 2 reaches the life bending number judgment value N0 of the main rope 2, or the accumulated stop time measured value T1 reaches the life judgment stop time T0 of the main rope 2. It has a function of determining that the main rope 2 is at the end of its life when it first enters one state. Here, when the measured number N1 of bending of the main rope 2 reaches the life bending number determination value N0 of the main rope 2, the bending number measurement value N1 of the main rope 2 becomes equal to the life bending number determination value N0 of the main rope 2. Or approximate. Further, the cumulative stop time measurement value T1 reaching the life determination stop time T0 of the main rope 2 means whether the cumulative stop time measurement value T1 is equal to or close to the life determination stop time T0 of the main rope 2. .
[0022]
The inspection instruction notification unit 8H has a function of instructing that the main rope 2 needs to be inspected when the life determination unit 8G determines that the main rope 2 is at the end of its life. The instruction that the inspection of the main rope 2 by the inspection instruction notification unit 8H is necessary is made by notifying the manager room of the building where the elevator 1 is installed or the remote monitoring center in the maintenance company of the elevator 1. The The notification method may be to display on the display screen of the personal computer that “the main rope 2 needs to be inspected” or “the main rope 2 needs to be inspected” by the sound generator. You may make it alert | report the effect. In addition, a message indicating that “main rope 2 needs to be inspected” is displayed on the display screen of the maintenance person's mobile phone or personal computer, and “main rope 2 needs to be inspected” from the mobile phone or personal computer. May be alarmed.
[0023]
Next, a life diagnosis method for the main rope 2 using the life diagnosis device 8 according to the embodiment will be described with reference to FIG.
[0024]
First, after connecting the life diagnosis apparatus 8 to the control computer 7 of the elevator control panel 6, whether or not the predetermined period set by the cycle setting unit 8B has passed, for example, one month is shown in FIG. The determination is made in step S01 of step 2. If it is determined in step S01 in FIG. 2 that the predetermined period has elapsed, the process proceeds to step S02 in FIG. In step S02 of FIG. 2, the traveling time data R0 for a predetermined period is taken from the control computer 7 into the bending number calculation unit 8C and the stop time calculation unit 8D.
[0025]
Thereafter, in the bending number calculation unit 8C, as shown in step S03 of FIG. 2, the bending number measurement value N1 of the main rope 2 is estimated and calculated based on the travel time data R0 of the elevator 1 fetched from the control computer 7. The stop time calculation unit 8D estimates and calculates the accumulated stop time measurement value T1 of the main rope 2 based on the travel time data R0 of the elevator 1 fetched from the control computer 7, as shown in step S04 of FIG.
[0026]
Thereafter, in the life determination unit 8G, as shown in step S05 of FIG. 2, the bending number measurement value N1 is fetched from the bending number calculation unit 8C, and the life bending number determination value N0 is fetched from the life bending number database 8E. The bending number measurement value N1 and the life bending number determination value N0 are compared, and at the same time, as shown in step S06 of FIG. 2, the accumulated stop time measurement value T1 is fetched from the stop time calculation unit 8D, and the life stop time database 8F is obtained. The life determination stop time T0 is taken in, the cumulative stop time measurement value T1 is compared with the life determination stop time T0, and the bending number measurement value N1 is changed to the life bending number determination value N0 as shown in step S07 of FIG. Either the accumulated stop time measurement value T1 has reached the life judgment stop time T0, or the first one of the two states is reached. If the determines that the main ropes 2 are life. If it is determined in step S07 in FIG. 2 that the main rope 2 has a life, the process proceeds to step S08 in FIG. In step S08 of FIG. 2, the inspection instruction notification unit 8H is activated by the notification command from the life determination unit 8G, and an instruction is given that the main rope 2 needs to be inspected.
[0027]
In the above embodiment, whether the measured number N1 of bending of the main rope 2 reaches the life bending number determination value N0 of the main rope 2, or whether the accumulated stop time measured value T1 reaches the life determination stop time T0 of the main rope 2. However, it is determined that the main rope 2 is at the end of its life when it first enters one of the states. However, the present invention is not limited to this. When the main rope 2 exceeds the life bending frequency judgment value N0 or the accumulated stop time measurement value T1 exceeds the life judgment stop time T0 of the main rope 2, the main rope 2 You may make it determine that 2 is a lifetime.
[0028]
In the above-described embodiment, the travel time data R0 of the elevator 1 for a predetermined period from the control computer 7 of the elevator 1 is taken into the life diagnosis device 8 so that the elevator 1 is not stopped for a long time. The life diagnosis can be performed, and not only the life due to the number of times the main rope 2 is bent, but also the life due to the accumulated stop time of the main rope 2 is determined. Can be improved.
[0029]
In addition, the life diagnosis device 8 is installed at a remote monitoring center in an elevator 1 maintenance company, etc., and the elevator travel time data R0 is automatically transmitted to the life diagnosis device 8 from the control computer 7 of the elevator 1 to periodically Therefore, if the life diagnosis of the main rope 2 is automatically performed, the inspection instruction notification unit 8H is activated, and the elevator 1 is turned on only when an instruction that the main rope 2 needs to be inspected is given. It is only necessary to stop the vehicle, and the maintenance work cost of the elevator 1 can be reduced, and the non-stop time of the elevator 1 is shortened, so that trouble for customers can be reduced.
[0030]
Next, another embodiment of the present invention will be described with reference to FIGS.
[0031]
FIG. 3 is a functional explanatory diagram of the life diagnosis device for an elevator main rope, and FIG. 4 is a flowchart showing a life diagnosis procedure by the life diagnosis device for an elevator main rope in FIG. 3, the same reference numerals as those in FIG. 1 represent the same contents.
[0032]
As shown in FIG. 3, the life diagnosis apparatus 80 according to another embodiment shown in FIGS. 3 and 4 includes an individual information input unit 80A, a cycle setting unit 80B, an operation measurement value storage unit 80C, and a life-affected operation item selection. Unit 80D, lifetime operation item value database unit 80E, lifetime determination unit 80F, and inspection instruction issue unit 80G.
[0033]
The individual information input unit 80A of the life diagnosis apparatus 80 inputs various information such as the life data of the elevator, the operation state of the elevator, the installation environment of the elevator, the use of parts, etc. It has a function of transmitting to the setting unit 80B, the service life influence operation item selection unit 80D, and the like.
[0034]
The cycle setting unit 80B has a function of setting the cycle of the life determination process, and can set the cycle to one year. This period can be appropriately changed by a command from the individual information input unit 80A.
[0035]
The operation measurement value storage unit 80C is based on a plurality of operation measurement data K0 fetched from the control computer 7, and affects the life of the main rope 2. The number of times the main rope 2 is bent and the accumulated stop time of the main rope 2. For each operation item such as, the operation measurement value (measurement calculation value) is calculated, and a plurality of operation measurement values are stored.
[0036]
The life influence operation item selection unit 80D receives the life data of the elevator, the operation of the elevator, which is input from the individual information input unit 80A among the plurality of operation measurement values stored in the operation measurement value storage unit 80C. It has a function of selecting one operation measurement value H1 that has the greatest influence on the life of the main rope 2 based on information such as state and component usage.
[0037]
The lifetime operation item value database unit 80E stores a plurality of lifetime determination values H0. The plurality of life judgment values H0, which affect the life of the main rope 2, are set by checking in advance through experiments or the like for each operation item of the main rope 2, and are determined by the individual information input unit 80A. It is input into the diagnostic device 80, transmitted to the lifetime operation item value database unit 80E, and stored in the lifetime operation item value database unit 80E.
[0038]
The life determination unit 80F includes the operation measurement value H1 selected by the life influence operation item selection unit 80D and the life determination value stored in the life operation item value database unit 80E corresponding to the selected operation item. Compared with H0, it has a function of determining that the main rope 2 has a life when the operation measurement value H1 exceeds the life judgment value H0.
[0039]
The inspection instruction notification unit 80G has a function of instructing that the main rope 2 needs to be inspected when the life determination unit 80F determines that the main rope 2 has a life.
[0040]
Next, a life diagnosis method for the main rope 2 using the life diagnosis device 80 of the other embodiment will be described with reference to FIG.
[0041]
First, after connecting the life diagnosis apparatus 80 to the control computer 7 of the elevator control panel 6, whether or not the period set by the period setting unit 80B has passed, for example, one year is shown in FIG. In step S11 of FIG. If it is determined in step S11 in FIG. 4 that one year has passed, the process proceeds to step S12 in FIG. In step S12 of FIG. 4, a plurality of pieces of operation measurement data K0 for a predetermined period are acquired from the control computer 7 and stored in the operation measurement value storage unit 80C.
[0042]
Thereafter, as shown in step S13 of FIG. 4, the life-affected operation item selection unit 80D is input from the individual information input unit 80A from among a plurality of operation measurement values stored in the operation measurement value storage unit 80C. However, based on information such as elevator customer specification data, life data, elevator installation environment data, and component usage, one operation measurement value H1 that most affects the life of the main rope 2 is selected.
[0043]
Thereafter, in the life determination unit 80F, as shown in step S14 of FIG. 4, the operation measurement value H1 from the life influence operation item selection unit 80D and the operation item selected from the life operation item value database unit 80E are handled. The life determination value H0 is taken in, and the operation measurement value H1 is compared with the life determination value H0. When the operation measurement value H1 exceeds the life determination value H0, it is determined that the main rope 2 has a life. To do. If it is determined in step S15 in FIG. 4 that the main rope 2 has a lifetime, the process proceeds to step S16 in FIG. In step S16 in FIG. 4, the inspection instruction notification unit 80G is activated by the notification command from the life determination unit 80F, and an instruction is given that the main rope 2 needs to be inspected.
[0044]
In the other embodiment, the operation measurement value H1 that has the greatest influence on the life of the main rope 2 is selected from a plurality of operation measurement values stored for each operation item that affects the life of the main rope 2. to, since the diagnostic life of the main ropes 2, compared to the lifetime diagnosis apparatus disappeared elevators for main rope on which has been determined only in the life due to the bending number of main ropes 2, the main ropes 2 It is possible to improve the life diagnosis accuracy by several levels. Moreover, according to the life diagnosis device 80 of the other embodiment, as in the life diagnosis device 8 of the one embodiment, the life diagnosis of the main rope 2 can be performed without stopping the elevator 1 for a long time. The non-stop time of the elevator 1 is shortened, and the trouble to the customer can be reduced.
[0045]
In the other embodiment, the life measurement value H1 selected by the life influence operation item selection unit 80D and the life stored in the life operation item value database unit 80E corresponding to the selected operation item. The determination value H0 is compared, and when the operation measurement value H1 exceeds the life determination value H0, it is determined that the main rope 2 has a life. However, the operation measurement value is not limited to this. It may be determined that the main rope 2 has a lifetime when H1 becomes equal to or approximates the lifetime determination value H0.
[0046]
According to both the above embodiments, it is possible to accurately predict the life of the main rope 2, and it is possible to replace the main rope 2 at an optimum period.
[0047]
【The invention's effect】
According to the present invention, the elevator travel time data of a predetermined period from the control computer of the elevators takes the lifting device, to compare the life bending times judging value of the bending frequency measurement value and the main rope of the main ropes with Compare the measured value of the accumulated stop time with the life determination stop time of the main rope, and if the measured value of the main rope bending count reaches the determined value of the main rope life bending count, or the accumulated stop time measured value of the main rope Since the main rope is judged to be at the end of its life when it reaches the end of the life judgment stop time, the life diagnosis of the main rope for the elevator is made without stopping the elevator for a long time. In addition, not only the life due to the number of bending times of the main rope but also the life due to the cumulative stop time of the main rope is determined. In, lifting devices for elevators main rope will be obtained which can improve the lifetime diagnostic accuracy of elevator main rope.
[Brief description of the drawings]
FIG. 1 is a functional explanatory diagram of an elevator main rope life diagnosis apparatus showing an embodiment of the present invention.
FIG. 2 is a flowchart showing a life diagnosis procedure by a life diagnosis device for an elevator main rope shown in FIG. 1;
FIG. 3 is a functional explanatory diagram of an elevator main rope life diagnosis apparatus showing another embodiment of the present invention.
4 is a flowchart showing a life diagnosis procedure by the life diagnosis device for an elevator main rope in FIG. 3; FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Elevator 2 Main rope 3 Car 4 Balance weight 5 Sheave 6 Elevator control panel 7 Control computer 8 Life diagnosis device 8A Individual information input part 8B Period setting part 8C Bending number calculating part 8D Stop time calculating part 8E Life bending number database 8F Lifetime stop time database 8G Lifetime determination unit 8H Inspection instruction notification unit 80 Lifetime diagnosis device 80A Individual information input unit 80B Period setting unit 80C Operation measurement value storage unit 80D Lifetime influence operation item selection unit 80E Lifetime operation item value database unit 80F Lifetime Judgment unit 80G Inspection instruction reporting unit

Claims (1)

In the elevator main rope life diagnosis device that diagnoses the main rope life based on the elevator travel time data,
A bending number calculation unit that calculates a measurement value of the number of bending times of the main rope based on the traveling time data of the elevator for a predetermined period taken from the computer for controlling the elevator;
A stop time calculation unit that calculates the accumulated stop time measurement value of the main rope based on the elevator travel time data for a predetermined period taken from the elevator control computer;
The measured value of the number of bending times is compared with the life rope number of times determination value of the main rope that is set in advance by confirming the experiment, and the cumulative stop time measured value and the value of the main rope that is set in advance by checking the experiment. Compared with the life judgment stop time, the bending number measurement value reaches the life bending number judgment value, or the cumulative stop time measurement value reaches the life judgment stop time. A life determination unit that determines that the main rope has a life when it is first,
For an elevator, comprising at least an inspection instruction notification unit for instructing that the main rope needs to be inspected when the main rope is determined to have a life by the life determination unit. Main rope life diagnosis device.

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