JP2016055961A - Elevator clearance diagnostic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for diagnosing a clearance of an elevator capable of estimating an adjustment time when an adjustment work of the clearance is required beforehand.SOLUTION: A clearance diagnosis part 11 provided on a device for diagnosing a clearance includes: a recording part 12 which records a measurement value measured by a clearance measurement device 10 for measuring the clearance between a counterweight 3 and a shock absorber 6 and operation information of a car 2 outputted from a controller 5 for controlling the travelling of the car 2; and an estimation part 13 which calculates a clearance estimation value in the future on the basis of the measurement value recorded by the recording part 12 and the operation information of the car 2, and estimates a clearance adjustment time E attaining to a prescribed judgement value D corresponding to an adjustment target value of the clearance with the calculated clearance estimation value.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an elevator clearance diagnostic apparatus for diagnosing whether or not the clearance between an elevator counterweight and a shock absorber disposed immediately below the counterweight is smaller than an adjustment target value.

  The clearance between the counterweight and the shock absorber disposed immediately below the counterweight decreases with time due to the elongation of the rope connecting the rider and the counterweight. If this clearance is smaller than a predetermined value, that is, an adjustment target value, the counterweight collides with the shock absorber before the car arrives at the top floor, which causes a problem in traveling to the top floor. For this reason, the clearance is usually measured periodically, and when the clearance becomes smaller than the adjustment target value, the rope is adjusted and trimmed, and the clearance is adjusted to keep the clearance in an appropriate dimension.

  Heretofore, Patent Document 1 discloses a clearance measuring device, that is, a clearance measuring device. The prior art disclosed in Patent Document 1 uses means for detecting the position of the elevator car with the number of pulses obtained by counting pulses generated in proportion to the rotation of the hoist that sends the main rope. The number of pulses when traveling from the standard stop floor to the standard destination floor is stored in advance, and when measuring clearance, the number of pulses when traveling between similar standard floors is stored as described above. The elongation of the main rope is obtained by comparing with the number of pulses, and the actual clearance is thereby obtained.

  Conventionally, Patent Document 2 discloses an elevator rope elongation diagnostic apparatus. The prior art disclosed in this patent document 2 calculates the amount of rope extension from the operation information of the elevator car including the elevator operating time, the number of working days, the load weight change, the tower temperature, and the rope tension. When the amount of elongation exceeds a predetermined value, that is, when the clearance becomes smaller than the adjustment target value, a warning warning is sent to the monitoring center to notify maintenance personnel to carry out clearance adjustment work through this monitoring center. Is.

JP 2009-208928 A JP-A-9-169477

  None of the conventional techniques disclosed in Patent Documents 1 and 2 described above can grasp the time when the clearance adjustment work is necessary until the measured clearance value becomes smaller than a predetermined value, that is, the adjustment target value. Along with this, there is a concern that the smoothing of the clearance adjustment work by the maintenance staff is hindered, and the serviceability for the elevator user is lowered.

  The present invention has been made based on the above-described actual situation in the prior art, and an object thereof is to provide an elevator clearance diagnostic apparatus capable of predicting in advance an adjustment timing that requires a clearance adjustment operation.

  In order to achieve the above object, an elevator clearance diagnostic apparatus according to the present invention includes a car that moves up and down a hoistway, a counterweight that secures a weight balance of the car, and the car and the counterweight. Are provided in an elevator having a rope for connecting the vehicle, a control device capable of controlling travel of the car and outputting operation information of the car, and a shock absorber disposed immediately below the counter weight, Whether or not the clearance between the counterweight and the shock absorber is smaller than the adjustment target value based on the measured value measured by the clearance measuring device. In an elevator clearance diagnosis apparatus for diagnosis, a clearance diagnosis to which the control device and the clearance measurement device are connected The clearance diagnostic unit is recorded by the recording unit that records the measurement value measured by the clearance measuring device and the operation information of the car that is output from the control device. Based on the measured value and the operation information of the car, a future clearance prediction value is calculated, and a clearance adjustment time at which the calculated clearance prediction value reaches a predetermined determination value corresponding to the adjustment target value is calculated. And a prediction unit for prediction.

  According to the elevator clearance diagnosis apparatus according to the present invention, the control unit and the prediction unit of the clearance diagnosis unit to which the clearance measurement device is connected can predict in advance the adjustment time that requires clearance adjustment work. . As a result, the present invention makes it possible to perform clearance adjustment work at the adjustment time in consideration of the convenience of the elevator user and the work schedule of the maintenance staff. Can be realized, and the serviceability for elevator users can be improved as compared with the prior art.

[BRIEF DESCRIPTION OF THE DRAWINGS] It is a side view which shows the basic composition of the elevator provided with one Embodiment of the clearance diagnosis apparatus based on this invention. It is a block diagram which shows the structure of the clearance diagnostic apparatus which concerns on this embodiment. It is a flowchart which shows the processing operation in the clearance diagnostic part with which the clearance diagnostic apparatus which concerns on this embodiment is equipped. It is a figure which shows the clearance-traveling time characteristic calculated | required by the estimation part with which this embodiment is equipped.

  DESCRIPTION OF EMBODIMENTS Embodiments of an elevator clearance diagnostic apparatus according to the present invention will be described below with reference to the drawings.

  An elevator provided with an embodiment of a clearance diagnostic apparatus according to the present invention includes, for example, a car 2 that moves up and down a hoistway 1 and a counterweight 3 that secures a weight balance between the car 2 and the elevator as shown in FIG. And a rope 4 that connects the car 2 and the counterweight 3, and a control device 5 that controls the travel of the car 2 and can output operation information of the car 2.

  As shown in FIG. 1, the elevator is operated by a shock absorber 6 disposed immediately below the counterweight 3, pulleys 7 and 8 around which the rope 4 is wound, and a signal output from the control device 5. And a hoisting machine 9 for moving the rope 4. The elevator also includes a clearance measuring device 10 that measures the clearance between the counterweight 3 and the shock absorber 6.

  As shown in FIG. 2, the clearance diagnosis unit 11 provided in the clearance diagnosis apparatus according to the present embodiment records the measurement value measured by the clearance measurement apparatus 10 as the minimum gap dimension and outputs it from the control apparatus 5. It includes a recording unit 12 that records operation information of the car 2, for example, accumulated travel time information.

  Further, the clearance diagnosis unit 11 calculates a travel time in units of one day from the accumulated travel time information of the car 2 recorded by the recording unit 12, and from the measured value of the clearance measuring device 10 recorded by the recording unit 12. Calculate the clearance reduction size per day travel time, calculate the predicted clearance value in the future based on the calculated daily travel time and the clearance reduction size per day travel time, The calculated clearance prediction value includes a prediction unit 13 that predicts the clearance adjustment time when a predetermined determination value corresponding to the clearance adjustment target value is reached.

  The clearance diagnosis unit 11 also includes a storage unit 14 that stores the clearance adjustment time predicted by the prediction unit 13 and a transmission unit 15 that transmits the clearance adjustment time predicted by the prediction unit 13 to a specific external location. Contains. For example, the specific external location is connected to the elevator via the line communication network 16 and is configured by a monitoring center 17 that is remotely located from the elevator and monitors the elevator. In addition, the transmission unit 15 includes an alarm unit that issues an alarm to the monitoring center 17 when the number of days until reaching the clearance adjustment time is less than a predetermined number of days.

  Next, the processing operation in the prediction unit 13 of the clearance diagnosis unit 11 provided in the clearance diagnosis apparatus according to the present embodiment will be described including the clearance-traveling time characteristic obtained by the prediction unit 13.

  As shown in step S1 of FIG. 3, the recording unit 12 of the clearance diagnosis unit 11 reads the cumulative travel time information of the elevator from the control device 5 and simultaneously uses the latest minimum gap dimension from the clearance measurement device 10 as a clearance measurement value. read.

  Next, in step S2, the presence or absence of the accumulated travel time information previously recorded in the recording unit 12 and the initial value of the clearance measurement value is confirmed. When the cumulative travel time information and the initial clearance measurement value are not recorded in the recording unit 12 (NO in step S2), the cumulative travel time information and clearance measurement value read in step S1 are stored in the recording unit 12 in step S4. This is recorded as an initial value (A in FIG. 4), and this process is terminated.

  When the accumulated travel time information and the initial value of the clearance measurement value are recorded in the recording unit 12 (YES in step S2), the clearance measurement value acquired in step S1 and the initial value are recorded in the recording unit 12 in step S3. Compare measured clearance values.

  At this time, if the clearance measurement value acquired in step S1 is larger than the clearance measurement value recorded as the initial value in the recording unit 12 (YES in step S3), the rope 4 is cut down or the end of the rope 4 is illustrated. It is determined that rope adjustment work such as tightening work of the fixing jig that is not performed has been performed, and step S4 is performed.

  Next, when the clearance measurement value acquired in step S1 is smaller than or equal to the clearance measurement value recorded as the initial value in the recording unit 12 (NO in step S3), it is recorded in step S4 in step S5. The cumulative travel time is compared with the cumulative travel time acquired in step S1. If the difference between the cumulative travel time acquired in step S1 and the cumulative travel time recorded in step S4 is not equal to or greater than the predetermined time (NO in step S5), it is determined that the elapsed time from the previous measurement (procedure S1) is small, and this The process ends.

  When the predetermined time has elapsed (YES in step S5), in step S6, the clearance measurement value and the accumulated travel time information acquired in step S1 are recorded in the recording unit 12 as measurement values after a certain time has elapsed (in FIG. 4). B).

  Next, in step S7, the prediction unit 13 obtains a calculated value by calculating a predicted clearance value by, for example, the least square method from the clearance measurement value and the accumulated travel time information (C in FIG. 4). Based on this, an adjustment time (E in FIG. 4) is calculated at which the predicted clearance value reaches a predetermined determination value (D in FIG. 4).

  Next, in step S8, the adjustment time calculated as described above is stored in the storage unit 14.

  Next, in step S9, it is determined whether the number of days until the calculated adjustment time is reached is less than a predetermined number of days. When the calculated number of days until reaching the adjustment time is less than the predetermined number of days (NO in step S9), the process proceeds to step S13, and it is determined that there is no allowance for the number of days until the adjustment time. An alarm is issued via the line communication network 16, and this process is terminated. The monitoring center 17 that has received the warning instructs the maintenance staff at the nearest sales office to carry out the adjustment work of the rope 4.

  When the number of days until the calculated adjustment time is reached is equal to or greater than the predetermined number of days (YES in step S9), the calculated adjustment time is compared with the adjustment time E recorded in the recording unit 14 in step S10. If there is no change in the adjustment time (NO in step S10), this process ends.

  When there is a change in the adjustment time (YES in step S10), in step S11, the number of days until the adjustment time is transmitted to the monitoring center 17. The monitoring center 17 that has received the information on the number of days until the adjustment time instructs the maintenance staff of the nearest sales office to create the adjustment work plan of the rope 4 and to perform the adjustment work of the rope 4 at the adjustment time. In step S12, the initial value of the recording unit 14 is updated, and this process ends.

  According to the clearance diagnostic apparatus according to the present embodiment including the clearance diagnostic unit 11 configured as described above, the prediction unit 13 can predict in advance the adjustment time at which the clearance adjustment operation is necessary. As a result, according to the present embodiment, it becomes possible to perform the clearance adjustment work at the adjustment time in consideration of the convenience of the elevator user and the work schedule of the maintenance staff, and smooth the clearance adjustment work by the maintenance staff. This can be realized, and serviceability for elevator users can be improved.

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Passenger car 3 Counterweight 4 Rope 5 Control device 6 Buffer 7 Pulley 8 Pulley 9 Hoisting machine 10 Clearance measuring device 11 Clearance diagnosis part 12 Recording part 13 Prediction part 14 Storage part 15 Transmission part 16 Line communication network 17 Monitoring center

Claims (4)

A car that moves up and down the hoistway, a counterweight that secures a weight balance of the car, a rope that connects the car and the counterweight, and controls the traveling of the car, Provided in an elevator having a control device capable of outputting operation information and a shock absorber disposed immediately below the counterweight,
A clearance measuring device for measuring the clearance between the counterweight and the shock absorber is provided, and the clearance between the counterweight and the shock absorber is smaller than the adjustment target value based on the measured value measured by the clearance measuring device. In the elevator clearance diagnostic device that diagnoses whether or not
The clearance diagnostic unit is connected to the control device and the clearance measuring device, the clearance diagnostic unit,
A recording unit that records measurement values measured by the clearance measuring device and operation information of the car that is output from the control device;
A future clearance predicted value is calculated based on the measured value recorded in the recording unit and the car operation information, and the calculated clearance predicted value corresponds to the adjustment target value. An elevator clearance diagnosis apparatus comprising: a prediction unit that predicts a clearance adjustment time to reach a value. In the elevator clearance diagnostic apparatus according to claim 1,
The clearance diagnosis apparatus according to claim 1, wherein the clearance diagnosis unit includes a transmission unit that transmits the clearance adjustment time predicted by the prediction unit to an external specific location. In the elevator clearance diagnostic apparatus according to claim 2,
The apparatus for diagnosing clearance of an elevator, wherein the specific external location is a monitoring center that is remotely located from the elevator and monitors the elevator. In the elevator clearance diagnostic apparatus according to claim 3,
The elevator clearance diagnosis apparatus according to claim 1, wherein the transmission unit includes an alarm unit that issues an alarm to the monitoring center when the number of days until the clearance adjustment time is reached is less than a predetermined number of days.