JP2007204263A - Main rope deterioration diagnostic system of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a main rope deterioration diagnostic system of an elevator capable of accurately and easily determining a maximally deteriorated part. <P>SOLUTION: This main rope deterioration diagnostic system has a main rope bending part arithmetic operation means 13 for arithmetically operating a part of a main rope of bending by passing through a sheave with every part of the main rope from a travel position signal outputting a travel position of a car or a counterweight, a main rope tension arithmetic operation means 14 for arithmetically operating main rope tension in the bending occurrence together with a load detecting result in the car in accordance with an acceleration-deceleration travel state and a steady travel state, a main rope stress arithmetic operation means 15 for arithmetically operating bending stress generated in the main rope in the steady travel state and stress of adding impact stress to the bending stress in the acceleration-deceleration travel state, and a main rope stress integral value storage means 16 for integrating and storing the stress of respective main rope parts from an arithmetic operation result of these main rope stress arithmetic operation means 15 and main rope bending part arithmetic operation means 13. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an elevator main rope deterioration diagnosis apparatus suitable for specifying a maximum deterioration portion of a main rope.

As a conventional elevator main rope deterioration diagnosis device, main rope abnormality detection means for detecting an abnormality of the main rope that raises and lowers the elevator, car position detection means for detecting the position of the elevator that moves up and down, and abnormality of the main rope Proposed to use a rope tester that detects a breakage of the main rope as the main rope abnormality detection means, and a main rope abnormality location search means for obtaining an abnormality confirmation position that can be reached and confirmed. (For example, refer to Patent Document 1).
JP 2001-39641 A (paragraph number 0013 to paragraph number 0014, FIGS. 1 to 2)

  However, in the main rope deterioration diagnosis apparatus described in the above-mentioned Japanese Patent Application Laid-Open No. 2001-39641, a rope tester that detects the breakage of the main rope is used as the main rope abnormality detection means. However, the rope tester generally makes an abnormality determination by detecting a change in magnetic flux associated with a break of the main rope strand, and has a problem that the accuracy of the abnormality determination is low.

  The present invention has been made from the actual situation in the above-described prior art, and an object of the present invention is to provide an elevator main rope deterioration diagnosis device capable of accurately diagnosing the maximum deterioration portion of the main rope.

  In order to achieve the above object, the present invention relates to the above-mentioned car and the above-mentioned car by driving a sheave of a main rope to which a car and a counterweight are connected and wound around the sheave of the hoisting machine. In the main rope deterioration diagnosis device used in an elevator for raising and lowering the counterweight in the hoistway, the main rope passes through the sheave for each part of the main rope from the travel position signal that outputs the travel position of the car or the counterweight. Main rope bending part calculation means that calculates the part of the main rope to be bent, and main rope tension calculation that calculates the main rope tension at the time of bending in combination with the load detection result in the car for each acceleration / deceleration traveling state and steady traveling state And the calculation result of this main rope tension calculation means, the steady running state is the bending stress generated in the main rope and the acceleration / deceleration running During operation, the main rope stress calculation means for calculating the stress obtained by adding impact stress to the bending stress, and the main rope stress calculation means and the calculation results of the main rope bending part calculation means, the stress of each main rope part is integrated. Main rope stress integrated value storage means for storing and the integrated stress maximum part for specifying the maximum integrated stress maximum part of the main rope having the maximum integrated stress value based on the contents stored in the main rope stress integrated value storage means It is characterized by comprising at least the specifying means.

  Further, the present invention provides a command signal for automatically running the car to a position where a diagnostic operator can visually diagnose the maximum accumulated stress portion by operating a maintenance terminal device connected to an elevator control device or a car upper control unit. Is provided with a work position automatic setting means for transmitting to the elevator control device or the car control unit.

  ADVANTAGE OF THE INVENTION According to this invention, the main rope degradation diagnostic apparatus of the elevator which can specify easily and accurately the main rope site | part where the value of integrated stress becomes the largest out of each site | part of the main rope hanging on the sheave is obtained. It is done.

  In addition, according to the present invention, the main rope portion where the value of the accumulated stress is maximized can be moved to a position where visual inspection by a diagnostic operator is easy, so that the main rope deterioration diagnosis work can be reliably performed, and An apparatus for diagnosing main rope deterioration of an elevator that can be efficiently performed is obtained.

  Hereinafter, an embodiment of an elevator main rope deterioration diagnosis apparatus according to the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing a main configuration of an elevator according to an embodiment of the present invention. FIG. 2 is a block diagram illustrating a main configuration of the main rope deterioration diagnosis device for an elevator according to the embodiment of the present invention. FIG. 3 is a flowchart showing a diagnosis procedure by the main rope deterioration diagnosis apparatus for an elevator according to the embodiment of the present invention.

  The elevator 1 according to the embodiment shown in FIG. 1 is driven by driving a sheave 4A on a main rope 5 wound around a sheave 4A of a hoisting machine 4 with a counterweight 2 and a counterweight 3 connected to each other. The car 2 and the weight 3 are lifted and lowered. In FIG. 1, reference numeral 6 denotes a deflector, reference numeral 7 denotes an elevator control device, reference numeral 8 denotes a car-top control unit, and reference numeral 9 denotes a tail code. The hoisting machine 4, the sheave 4 </ b> A, the deflecting wheel 6 and the elevator control device 7 are installed in the machine room 10. The car 2 and the counterweight 3 are arranged so as to move up and down in the hoistway 11.

  As shown in FIG. 1, the elevator control device 7 and the car upper control unit 8 incorporate a main rope deterioration diagnosis device 12 and a work position automatic setting means 18 and a maintenance terminal device 19 is connected thereto. It is. The work position automatic setting means 18 operates the maintenance terminal device 19 to give a command signal for automatically running the car 2 to a position where the diagnostic workers A1 and A2 can visually diagnose the maximum accumulated stress portion H. 7 has a function to transmit. The maintenance terminal device 19 includes a personal computer that can be carried by diagnostic workers A1 and A2 including elevator maintenance personnel.

  As shown in FIG. 2, the main rope deterioration diagnosis device 12 includes a main rope bending part calculation means 13, a main rope tension calculation means 14, a main rope stress calculation means 15, a main rope stress integrated value storage means 16, The integrated stress maximum site specifying means 17 is at least configured.

  The main rope bending part calculation means 13 calculates the bending part of the main rope 5 bent through the sheave for each part of the main rope 5 from the running position data D2 that outputs the running position of the car 2 or the counterweight 3. It has a function. The main rope tension calculating means 14 has a function of calculating the main rope tension at the time of occurrence of bending together with the load detection result in the car 2 according to the acceleration / deceleration running state and the steady running state of the car 2. Based on the calculation result of the main rope tension calculation means 14, the main rope stress calculation means 15 adds a bending stress generated in the main rope 5 in the steady running state and an impact stress to the bending stress in the acceleration / deceleration running state. It has a function of calculating the stress (hereinafter referred to as total stress).

  The main rope stress integrated value storage means 16 has a function of storing an integrated value obtained by integrating the stresses of the main rope parts from the calculation results of the main rope stress calculation means 15 and the main rope bending part calculation means 13. . The integrated stress maximum part specifying means 17 specifies the main rope part having the maximum integrated stress value based on the content stored in the main rope stress integrated value storage means 16, that is, the maximum deteriorated part H of the main rope 5. It has a function.

  Next, the diagnosis procedure of the main rope 5 using the main rope deterioration diagnosis device 12 will be specifically described based on FIG.

  First, as shown in step S1 of FIG. 3, the elevator control device 7 determines whether or not the elevator 1 is activated. And when it determines with not starting, the determination is repeated until the elevator 1 starts, and when it determines with the elevator 1 having started, it progresses to step S2 of FIG. 3, and an elevator control apparatus 7 detects load detection data D1 of the car 2, travel position data D2 of the car 2 or counterweight 3, speed data D3 of the car 2 or counterweight 3, and impact load data D4 of the main rope 5. The load detection data D1, travel position data D2, speed data D3, and impact load data D4 are transmitted to the main rope deterioration diagnosis device 12.

  Next, in the main rope bending part calculation means 13 of the main rope deterioration diagnosis device 12, as shown in step S3 of FIG. 3, the sheave 4A is obtained for each part of the main rope 5 from the traveling position data D2 of the car 2 or the counterweight 3. The bending portion of the main rope 5 that is bent by passing through is calculated, and the calculated value is transmitted to the main rope tension calculating means 14 as bending portion data D5.

  Next, as shown in step S4 of FIG. 3, the main rope tension calculating means 14 determines whether or not the traveling state of the car 2 when calculating the bending portion of the main rope 5 is acceleration / deceleration traveling. The determination is based on the data D3. If the traveling state of the car 2 is not in acceleration / deceleration traveling, that is, if the car 2 is in a steady traveling state, the process proceeds to step S5 in FIG. 3 and the traveling state of the car 2 is accelerated / decelerated. If the vehicle is traveling, the process proceeds to step S7 in FIG.

  In step S4 of FIG. 3, when the process proceeds to step S5 of FIG. 3, that is, when the car 2 is in a steady running state, the load detection data D1 of the car 2 is taken in and the main rope tension calculating means 14 The main rope tension T at the time of bending occurrence is calculated. Thereafter, the process proceeds to step S6 in FIG. 3, and the bending stress W generated for each part of the main rope 5 is calculated based on the main rope tension T calculated in step S5 in FIG.

  In step S4 of FIG. 3, when the process proceeds to step S7 of FIG. 3, that is, when the car 2 is running at acceleration / deceleration, the load detection data D1 of the car 2 is taken in, and the main rope tension calculating means 14 To calculate the main rope tension T at the time of occurrence of bending. Thereafter, the process proceeds to step S8 in FIG. 3, and the bending stress W generated for each part of the main rope 5 is calculated based on the main rope tension T calculated in step S5 in FIG. The total stress WG to which the impact stress calculated based on the load data D4 (impact load applied to the main rope 5) is applied is calculated.

  Next, the bending stress W calculated in step S6 in FIG. 3 and the total stress WG calculated in step S8 in FIG. 3 are stored in the main rope stress integrated value storage means 16 as shown in step S9 in FIG. Sent. In the main rope stress integrated value storage means 16, the bending stress W or the total stress WG calculated by the main rope stress calculation means 15 is calculated for each part of the main rope 5 calculated by the main rope bending part calculation means 13. A value obtained by integrating the stresses applied to each part of the same main rope 5 until the previous time is stored as an integrated stress value for each part of the main rope 5 as shown in step S9 in FIG.

  Next, the process proceeds to step S10 in FIG. 3, and the part of the main rope 5 to which the largest integrated stress value is applied among the integrated stress values for each part of the main rope 5 stored in the main rope stress integrated value storage means 16. Is specified by the integrated stress maximum region specifying means 17.

  Next, the process proceeds to step S11 in FIG. 3, and the elevator controller 7 determines whether or not the elevator 1 has stopped. If it is determined that the elevator 1 does not stop, the process returns to step S3 in FIG. 3 is repeated, and when it is determined that the elevator 1 has stopped, the part of the main rope 5 specified by the integrated stress maximum part specifying means 17 is The maximum degradation site H is recorded and stored in the integrated stress maximum site specifying means 17.

  As described above, according to the diagnosis procedure of the main rope 5 using the main rope deterioration diagnosis device 12, the maintenance terminal device uses the maximum deterioration portion H of the main rope 5 recorded and stored in the integrated stress maximum portion specifying means 17. By making it transmit to 19, the diagnostic workers A1 and A2 can easily grasp the maximum deterioration portion H of the main rope 5.

  Further, according to the main rope deterioration diagnosis device 12, the maintenance operator 19 is connected to the elevator control device 7 or the car control unit 8 to operate the diagnosis workers A1 and A2 so that the integrated stress maximum region H is obtained. By transmitting a command signal for automatically running the car 2 to a position where diagnosis can be performed from the work position automatic setting means 18 to the elevator control device 7, the diagnosis workers A1 and A2 can obtain the maximum accumulated stress portion H of the main rope 5. Can be in a state where visual inspection is possible. Therefore, according to the main rope deterioration diagnosing device 12, the part of the main rope 5 that deteriorates earliest can be quickly and safely diagnosed, and the diagnosis work can be reduced.

  Furthermore, in one embodiment shown in FIG. 1, the main rope deterioration diagnosis device 12 incorporated in the car control unit 8 causes the maximum deterioration of the main rope 5 to a position where the diagnostic operator A2 on the car 2 can easily make a visual diagnosis. Although the site | part H is moved, it is not limited to this. The main rope deterioration diagnosis device 12 incorporated in the elevator control device 7 may move the maximum deterioration portion H of the main rope 5 to a position where the diagnostic operator A1 in the machine room 10 can easily make a visual diagnosis.

  Needless to say, the present invention is not limited to the elevator main rope deterioration diagnosis device 12 shown in the above embodiment, and can be modified within the scope of the present invention.

It is a block diagram which shows the principal part structure of the elevator which concerns on one Embodiment of this invention. It is a block diagram which shows the principal part structure of the main rope deterioration diagnostic apparatus of the elevator which concerns on one Embodiment of this invention. It is a flowchart which shows the diagnostic procedure by the main rope deterioration diagnostic apparatus of the elevator which concerns on one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Elevator 2 Car 3 Balance weight 4 Hoisting machine 4A Sheave 5 Main rope 6 Baffle 7 Elevator control device 8 Car upper control part 9 Tail cord 10 Machine room 11 Hoistway 12 Main rope deterioration diagnostic device 13 Main rope bending part calculation Means 14 Main rope tension calculation means 15 Main rope stress calculation means 16 Main rope stress integrated value storage means 17 Integrated stress maximum part specifying means 18 Work position automatic setting means 19 Maintenance terminal device A1, A2 Diagnosis worker D1 Load detection data D2 Traveling Position data D3 Speed data D4 Impact load data D5 Bending part data H Maximum deterioration part T Main rope tension W Bending stress W

Claims (2)

The main rope wound around the sheave of the hoisting machine is connected to the car and the counterweight, and is used in an elevator that moves the counterweight and the counterweight in the hoistway by driving the sheave. In the main rope deterioration diagnosis device,
Main rope bending part calculation means for calculating a part of the main rope bent through the sheave for each part of the main rope from a traveling position signal that outputs the traveling position of the car or the counterweight, and acceleration / deceleration traveling Based on the main rope tension calculation means that calculates the main rope tension at the time of occurrence of bending along with the load detection result in the car for each state and steady running condition, and based on the calculation result of this main rope tension calculating means, the steady running condition is A main rope stress calculating means for calculating a bending stress generated in the main rope and a stress obtained by adding an impact stress to the bending stress during the acceleration / deceleration traveling state, and the main rope stress calculating means and the main rope bending part calculation Main rope stress integrated value storage means for accumulating and storing the stress of each main rope part from the calculation result of the means, and the contents stored in the main rope stress integrated value storage means. And a cumulated stress maximum region specifying means the value of the cumulated stress to identify the cumulated stress maximum region of the main ropes having the maximum lift of the main ropes deterioration diagnosis apparatus characterized by being composed of at least. By operating a maintenance terminal device connected to the elevator control device or the on-car control unit, a command signal for automatically running the car to a position where a diagnostic operator can visually diagnose the maximum accumulated stress portion is provided to the elevator control device. 2. The apparatus for diagnosing main rope deterioration of an elevator according to claim 1, further comprising automatic work position setting means for transmitting to the control unit on the car.

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