JP2018154426A - Elevator device and adjustment method for elevator load detector - Google Patents

Abstract

An elevator load detector is appropriately adjusted while using a simple load detector adjusting means. An elevator apparatus detects a load in a car in accordance with the bending of an elastic body (vibration isolation rubber 13), and a control for controlling the operation of the car based on the load in the car. And a control device that stores a detection output value of the load detector for a predetermined load value, and in the operation of the car, based on the detection output value, from the output of the load detector, The load is measured, and the state of the elastic body characteristic change is determined based on the temporal characteristic of the output of the load detector with respect to a predetermined load value. [Selection] Figure 1

Description

  The present invention relates to an elevator apparatus including a load detector, and an adjustment method for an elevator load detector.

  When the elevator is started, the operation is controlled so that the car starts smoothly according to the detected value of the load in the car by the load detector. For this reason, if there is an error between the detected value of the load in the car and the actual load in the car, the car moves in the direction opposite to the destination direction at the time of start-up, i.e., immediately after the brake is released. (Reverse), suddenly moving toward the destination direction (jumping out), leading to a decrease in ride comfort. Therefore, accuracy is required for detection of the load in the car.

  The load detector for elevators detects the amount of deflection of the vibration isolating rubber provided between the car floor and the car frame. Therefore, if the material of the vibration-proof rubber changes due to secular change or the like, the output characteristic of the load detector changes, so the accuracy of the load detection value in the car decreases. For this reason, the correspondence between the load in the car and the output of the load detector is adjusted periodically or according to a decrease in riding comfort.

  As a conventional technique related to the adjustment of such an elevator load detector, for example, a technique described in Patent Document 1 is known.

  In this conventional technology, when the test weight is brought into the car and the car load is set to a predetermined load (45% load) and 100% load, the correspondence between the car load and the load detector output is in the initial state. Next, the control circuit is adjusted. Patent Document 1 also discloses a technique for adjusting the correspondence between the load in the car and the load detector output without using the test weight by adjusting the output of the load detector in the 0% load state to the initial state. Have been described.

JP 2004-168434 A

  According to the above prior art, the correspondence between the car load and the load detector output can be easily adjusted. However, in the prior art, no consideration is given to the case where the material properties of the vibration-proof rubber greatly change due to aging or temperature.

  Therefore, the present invention provides an elevator device that can perform appropriate adjustment while using simple load detector adjustment means even when the material characteristics of the vibration-proof rubber greatly change due to secular change or temperature. And a method for adjusting an elevator load detector.

  In order to solve the above-described problems, an elevator apparatus according to the present invention includes a load detector that detects a load in a car according to the bending of an elastic body, and a control that controls the operation of the car based on the load in the car. And a control device stores a detection output value of the load detector with respect to a predetermined load value, and when the car is in operation, based on the detection output value, the load in the car is determined from the output of the load detector. And the state of the characteristic change of the elastic body is determined based on the temporal characteristic of the output of the load detector with respect to a predetermined load value.

  In order to solve the above-mentioned problem, an adjustment method for an elevator load detector according to the present invention is an adjustment method for an elevator load detector that detects a load in an elevator car according to the bending of an elastic body. The detection output value of the load detector for the predetermined load value, which is set to measure the load in the car when the car is in operation, is used for the car using the weight loaded in the car with the predetermined load. Based on the temporal characteristics of the output of the load detector with respect to a predetermined load value applied to the car, the state of the elastic body characteristic change is determined.

  According to the present invention, the output of the load detector can be adjusted easily and appropriately.

  Problems, configurations, and effects other than those described above will become apparent from the following description of embodiments.

1 shows a schematic configuration of an elevator system according to an embodiment. The relationship between the detection value of a load detector and time at the time of actual load adjustment is shown. The relationship between the detection value of the load detector and the time when the detection value of the load detector vibrates is shown. It is a flowchart which shows the flow of the actual load adjustment operation | work in this embodiment. An example of annual change of output fluctuation of the load detector is shown. It is a flowchart which shows the flow of the process which diagnoses the temperature change of a vibration-proof rubber. An example of the relationship between the load in a cage | basket | car and the output of a load detector is shown.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each figure, the same reference numerals indicate the same constituent elements or constituent elements having similar functions.

  This embodiment is a technique that can cope with a case where the material characteristics of the vibration-proof rubber greatly change. For example, FIG. 7 shows an example of the relationship between the load in the car and the output of the load detector when the material characteristics of the vibration-proof rubber change. In addition, this example is a result of examination by the present inventors.

  As shown in FIG. 7, when an error occurs in the load detector output (sensor output) due to an initial change (familiarity) in material characteristics that occurs relatively early from the new state, the slope of the linear change in α ′ is normally detected. It is almost the same as the slope of the linear change in the state α, that is, in the initial state (antivibration rubber is new). In this case, the correspondence between the load in the car and the output of the load detector can be appropriately adjusted to the initial state by the conventional technique. On the other hand, when the material characteristics change greatly due to secular change or the like, the magnitude of the slope of the linear change changes in β. For this reason, in the prior art, proper adjustment is not performed, and as a result, it is difficult to improve the riding comfort of the elevator. Therefore, a configuration will be described in which the material is appropriately adjusted even when β changes greatly.

  FIG. 1 shows a schematic configuration of an elevator system including a load detector adjusting device according to an embodiment of the present invention.

  As shown in FIG. 1, a car weight 10 and a car frame 11 are connected to a counterweight 15 by a wire rope 17 serving as a main rope. The wire rope 17 is wound around the sheave of the hoisting machine 16 and the baffle wheel 18, so that the car and the counterweight 15 are suspended in a lifting manner in a hoistway (not shown). When the sheave is rotationally driven by the electric motor in the hoisting machine 16, the wire rope 17 is frictionally driven, whereby the car and the counterweight 15 are raised and lowered in opposite directions in the hoistway.

  The car floor 10 is provided on the car frame 11 and is supported by a vibration isolating rubber 13 positioned between the floor surface of the car floor 10 and the car frame 11. That is, the car is supported by the vibration isolating rubber 13 in the car frame 11. When there is a passenger 21 in the car, the load in the car is detected using the load detector 14 (load sensor). The load detector 14 detects the distance between the car floor 10 and the load detector 14 that changes in accordance with the deflection of the anti-vibration rubber 13 caused by the load by the passenger 21. The distance detection signal output from the load detector 14 is sent to the control device 19 via the transmission cable 20. The control device 19 calculates the load in the car based on the distance detection signal from the load detector 14, and controls the operation of the car according to the calculated load.

  Here, the weight of the counterweight is set so as to balance the total weight on the car side when a load of about half of the maximum load (for example, 40 to 50%) is applied to the car. For this reason, when the elevator is stopped, the movement of the car is prevented by braking the hoisting machine 16 by the brake 12 in order to maintain the stopped state of the car regardless of the magnitude of the load. Further, when the car is raised and lowered, the car 11 is driven up and down by driving the hoisting machine 16 with the brake 12 being released by the brake control signal from the control device 19. At this time, the control device 19 controls the hoisting machine 16 so as to generate torque for starting operation of the car toward the destination floor at a predetermined acceleration according to the calculated load in the car.

  Accordingly, when the material characteristics of the vibration isolating rubber 13 change due to an initial change (familiarity), an aging change, or the like, the correspondence between the car load and the load detector output changes, so the load calculation accuracy decreases. For this reason, an appropriate torque is not generated at the time of starting the operation of the car, and the car can be reversed or jumped out. On the other hand, in the present embodiment, as described below, the load calculation accuracy is ensured by adjusting the correspondence between the load in the car and the output of the load detector.

  First, a weight (for example, an iron block) is mounted on an unattended car that is stopped, and a maximum load, that is, a 100% load is applied. The control device 19 stores the output value of the load detector 14 in this case as a 100% output. Next, all weights are removed from the car, and the car load is set to 0% load. And the control apparatus 19 memorize | stores the output value of the load detector 14 in the case of 0% load as 0% output. As described above, in this embodiment, the weight is an actual load, and the correspondence between the load in the car and the load detector output is adjusted by the detection output of the load detector 14 (hereinafter referred to as “actual load adjustment”). ).

  In addition, the control apparatus 19 will perform the operation | movement which concerns on actual load adjustment, if the command signal from the outside, for example, the command signal from the maintenance terminal device (not shown) which a maintenance worker carries, is received. At this time, the control device 19 functions as an actual load adjusting device, that is, an adjusting device for an elevator load detector, by a CPU (Central Processing Unit) including a microcomputer executing a predetermined program. .

  The control device 19 assumes that the correspondence between the load in the car and the load detector output is a value obtained by the actual load adjustment at the load detector output at 0% load and 100% load, and further from 0% load to 100% load. Assuming that the load detector output changes linearly in the load range up to, the load in the car is calculated based on the load detector output during the operation control of the car. As a result, even if the material of the vibration-proof rubber changes, the load calculation accuracy is ensured, so that reversal and jump-out in the movement of the car can be prevented, and good riding comfort can be maintained.

  However, if the material of the anti-vibration rubber 13 is changed, the restoring force of the bending is greatly reduced or the restoration itself becomes difficult. Therefore, the load detector output value at 0% load is achieved by the actual load adjustment described above. Even if is set, it is a value when the vibration-proof rubber deflection is not normal, or the output value changes after setting. Further, the load detector output does not always change linearly in the range of 0% load and 100% load. For this reason, the correspondence between the car load and the load detector output is not properly adjusted, and as a result, the ride comfort may not be improved.

  Therefore, in the present embodiment, it is determined whether the actual load adjustment is properly performed by means described below.

  FIG. 2 shows the relationship between the detection value of the load detector and time during actual load adjustment.

  First, in the weighting period in FIG. 2, a weight corresponding to 100% load is carried into the car. Here, the control device 19 stores the output value of the load detector 14 with respect to 100% load.

  Next, in the drawing period in FIG. 2, all weights are carried out (pulled), and the load in the car is set to 0% load. Here, the control device 19 measures a return time from when the weight is removed until the output value of the load detector returns to 0%.

  The control device 19 compares the measured return time with the initial value in the new state (“normal change” a in FIG. 2), and the variation from the initial value is a predetermined amount (for example, α% of the initial value: It is determined whether α does not exceed (preliminarily registered in the control device 19). If it does not exceed the predetermined amount, the control device 19 stores the output value of the load detector 14 for the 0% load. The initial value of the return time is similarly measured and stored in the control device 19 during the actual load adjustment at the time of elevator installation. Therefore, even if the elevator car size, load capacity, type and number of vibration isolating rubbers, etc., subject to actual load adjustment are different, the reference initial value can be easily set.

  In addition, when the recovery time greatly varies from the initial value as in “change during deterioration” b in FIG. 2, the control device 19 determines that the measured variation in the recovery time is equal to or greater than a predetermined amount. In this case, since the actual load adjustment cannot be performed properly, the control device 19 transmits a signal to the maintenance terminal device carried by the maintenance staff without storing the output value of the load detector 14 for the 0% load. Then, the abnormality of the anti-vibration rubber 13 is notified.

  In the present embodiment, the maintenance terminal device monitors the output of the load detection sensor via the control device 19, and when a load is detected, the command signal that causes the control device 19 to start measuring the return time. Is automatically sent. In addition to automatic transmission from the maintenance terminal device, the command signal is given to the control device by a special operation (manual operation) such as maintenance switches and maintenance terminals, which is effective when the control device 19 is in the maintenance / inspection mode. Alternatively, it may be given by a signal output from the image processing apparatus when it is detected by the image processing of the camera image installed in the car that there is no load (weight) in the car.

  As described above, the return time to 0% of the load detection value, that is, the return time of the deflection of the anti-vibration rubber, when the time length increases, the load detector accurately detects the load in the car when detecting the load. It becomes difficult. For this reason, the return time to 0% of the load detection value is a main index indicating the material change of the vibration-proof rubber for elevators. Note that, as shown in FIG. 2, the output of the load detector linearly changes with time at the time of drawing, so the magnitude of the change in time and the magnitude of the return time correspond to each other. Therefore, instead of the return time, the magnitude of the change in time may be measured.

  Other indicators will be described next.

  In FIG. 2, in the case of the time change c of the load detector detection output at the time of extraction, the load detector detection output value does not return to 0%, but only returns to about several percent. This is because, according to the study of the present inventor, the return characteristics of the anti-vibration rubber are changed due to the influence of aging deterioration or the like, and the return amount of bending is reduced. Therefore, the control device determines whether the load detector output with respect to the 0% load is within a predetermined range, for example, 0 to 1%. If the output is out of the range, the vibration isolating rubber appropriately adjusts the actual load. Therefore, the maintenance terminal device is notified of a vibration-proof rubber replacement instruction.

  FIG. 3 shows the relationship between the detected value of the load detector and time when the detected value of the load detector vibrates during actual load adjustment.

  According to the study of the present inventor, the vibration of the detected value of the load detector (solid line d in FIG. 3) is a reaction when the weight is lowered from the inside of the car (extraction), and the wire rope 17 that suspends the car. This occurs because the cage swings up and down due to the expansion and contraction. Thus, when the detection value of the load detector oscillates due to the swaying of the car, the load is applied until the output becomes 0% (zero cross point e in FIG. 3) as in the case where the sway does not occur (broken line in FIG. 3). Even if the detector output is detected, the magnitude of the recovery time (or the slope of the time change) measured at that time is due to factors other than the return of the anti-vibration rubber flexure (that is, the swaying of the cage due to the expansion and contraction of the wire rope). Will also depend.

  Therefore, in this embodiment, when the control device 19 determines that the car is shaken based on the detection output of the load detector, it does not determine the deterioration of the anti-vibration rubber due to the return time (necessity of replacement). Then, the process for adjusting the actual load is executed again. That is, the actual load adjustment work is repeatedly performed after the weight is carried into the car. At this time, the weight lowering method is adjusted so that the car does not shake. Thereby, since the deterioration of the vibration isolating rubber is determined in a state where the swing of the car is suppressed, the reliability of the actual load adjustment including the vibration isolating rubber deterioration determination is improved.

  Note that the control device 19 determines the presence / absence of vibration of the detection output, that is, the presence / absence of the car, based on the zero cross of the detection output of the load detector, the repetition of the zero cross, the negative output, the repetition of the negative output and the positive output, and the like. Further, according to the study of the present inventor, the magnitude of the time change gradient of the load detector output until the return to 0% differs depending on whether the vibration isolating rubber is returned from bending or the car is shaken. The longer the time, the more noticeable the difference. Therefore, if the return time is significantly different from the initial value, it is determined whether the car is shaken. If the car is shaken, the actual load adjustment operation may be repeated without determining that the car is abnormal.

  As described above, when it is determined that the car is shaken, the control device 19 may notify the maintenance terminal device of a re-execution instruction for actual load adjustment. At that time, the control device 19 may notify an alert so as not to cause shaking when the weight is removed.

  FIG. 4 is a flowchart showing the flow of the actual load adjustment work to which the anti-vibration rubber deterioration determination process by the control device 19 in the present embodiment as described above is applied.

  When the actual load adjustment work is started (step S80), first, a weight corresponding to the loadable load is loaded in the car (step S81).

  Next, the detection value of the load detector 14 is set to the control device 19 as a 100% output while the weight is loaded (step S82).

  Next, all the weights are unloaded from the car (step S83), and in addition, in order to diagnose the return characteristics of the deflection of the vibration isolating rubber, measurement of the return time of the load detector output to 0% output is started. (Step S84).

  Next, 0% output of the detection value of the load detector is confirmed during a predetermined time from the start of measurement in step S84 (step S85). If 0% output is confirmed (Y in step S85), then step S86 is executed. If 0% output is not confirmed within the predetermined time (N in Step S85), a notification instructing replacement of the anti-vibration rubber is sent out (No in Step S85).

  In step S86, it is determined whether 0% output has been measured for a predetermined time or more as the detection value of the load detector. Here, the return to 0% output is not temporary, and the detection value of the load detector surely returns to 0% output and is stable, that is, the deflection of the anti-vibration rubber returns and is stable. It is confirmed that If it is determined that the 0% output has been measured for the predetermined time or longer (Y in step S86), then step S87 is executed. If it is not determined that the 0% output has been measured for a predetermined time or longer (N in step S86), step S85 is executed again.

  In step S87, measurement of the return time to 0% output ends. Here, the measurement value of the return time is held in the control device.

  Next, it is determined whether the actual load adjustment work being performed is a new or first actual load adjustment work after the elevator installation. This determination is performed by the control device based on a work history stored in the control device and an input operation to the maintenance terminal device. In the present embodiment, actual load adjustment is performed when the elevator is installed, and 0% output and 100% output of the load detector are set in the control device.

  If it is determined that the actual load adjustment work being performed is a new actual load adjustment work (Y in step S88), the measured return time is held in the control device as an initial value (reference value), and the actual load The adjustment work is finished (step S91). If it is determined that the work is not a new actual load adjustment work (N in step S88), then step S89 is executed. Here, if it is a new actual load adjustment work, there is substantially no deterioration of the vibration-proof rubber, and the flexure has returned to normal, so in this embodiment, step S90 (setting of 0% output) described later is Skipped and not executed (however, it may be executed). If there is an abnormality in the anti-vibration rubber in spite of the new actual load work, the abnormality is detected in the above-described step S85.

  In step S89, the measured value of the current return time is compared with the initial value. As a result of the comparison, if it is determined that the change from the initial value is within a predetermined range and the measured value is equivalent to the initial value (Y in step S89), then step S90 is executed. In step S90, the detected output value of the load detector at the time of 0% load detected this time is set in the control device as 0% output. And after execution of step S90, an actual load adjustment work is complete | finished (step S91).

  If it is determined in step S89 that the change from the initial value exceeds the predetermined value and the measured value exceeds the initial value (N in step S89), then step S92 is executed.

  In step S92, the presence or absence of car sway is detected based on the output value of the load detector, and it is determined whether the cause of the return time exceeding the initial value is the change in the load detection value due to car sway. The If it is determined that the car has been shaken (step S92Y), the process returns to step S81, and the actual load adjustment work is executed again from the loading of the weight in the car. At this time, the control device sends a notification instructing re-execution of the actual load adjustment work to the maintenance terminal device. By displaying this notification on the display of the maintenance terminal device, the maintenance engineer can confirm that the actual load adjustment work needs to be re-executed because the car has shaken.

  In Step 92, when it is determined that the cause of the return time exceeding the initial value is not due to the shaking of the car (N in Step S92), that is, due to the deterioration of the vibration isolating rubber, An anti-vibration rubber replacement instruction notification is sent from the control device to the maintenance terminal device. By displaying this notification on the display of the maintenance terminal device, the maintenance engineer can confirm that the anti-vibration rubber needs to be replaced. As a result, the deterioration of the anti-vibration rubber can be confirmed at an early stage, and the anti-vibration rubber can be replaced. It is possible to prevent uncomfortable feelings and abnormal operation control.

  Anti-vibration rubber material is caused not only by aging but also by temperature change. Therefore, in the present embodiment, as described below, when there is an abnormality in the temperature change of the material of the vibration-proof rubber, the actual load adjustment is performed.

  FIG. 5 shows an example of the annual transition of the change from the 0% output of the load detector when there is no load, that is, at 0% load.

  According to the study of the present inventor, the output fluctuation of the load detector shown in FIG. 5 is caused by the influence of the temperature change accompanying the climate change due to the season or the like. Anti-vibration rubber changes its repulsive force and volume due to the influence of temperature, so that the fluctuation range becomes large (for example, Z in FIG. 5) or the fluctuation range becomes small (for example, FIG. 5). Y) inside. Therefore, in the present embodiment, the control device 19 calculates a difference (that is, a fluctuation range) between the output of the load detector detected when the elevator is stopped, that is, when there is no load standby, and the stored 0% output value. The load detector output during operation is corrected based on the calculated difference. Thereby, the precision of the load detection value with respect to a temperature change improves.

  Further, the control device 19 records the load detector output value during no-load standby for a predetermined period (for example, one year). Further, the control device 19 creates a change pattern of the load detector output value in a predetermined period (for example, an annual change pattern as shown in FIG. 5) from the recorded load detector output value. Whether the load detector output value at the time of no-load standby measured at the present time is on the created change pattern (for example, a change pattern at the time of product testing or a change pattern for one year after elevator installation) Whether or not there is an abnormality is determined by determining whether or not. As a result of the comparison, if it is determined that there is an abnormality, the control device 19 notifies the outside (for example, a maintenance management company) of an instruction for the actual load adjustment work. As a result, the actual load adjustment can be performed accurately in accordance with the material change of the vibration-proof rubber due to the temperature change, so that the accuracy of detecting the load in the car can be maintained.

  FIG. 6 is a flowchart showing a flow of processing for diagnosing a temperature change of the vibration isolating rubber in the control device.

  First, when the elevator stops (step S50), it is determined whether the standby state after the stop has been detected for a certain period of time (step S51). Thereby, it can be determined whether the car is surely unmanned, that is, the load is 0%. For example, if the control device has a function of turning off the lighting in the car for energy saving if there is no car call for a predetermined time (for example, 3 minutes) after the car is stopped, a signal for instructing the controller to turn off the light. Is created, it is determined that the standby state after the stop has been detected for a certain period of time.

  If it is determined in step S51 that the standby state has been detected for a certain time (Y in step S51), then step S52 is executed, and if not determined (N in step S51), the determination process in step S51 is repeatedly executed. The

  If it is confirmed in step S51 that the inside of the car is unmanned, that is, the load is 0%, then the load detection value K in the car by the load detector is recorded (step S52). Next, the measured value S of the temperature in the hoistway when the load detection value K is recorded is recorded (step S53). Further, the date and time D at which the temperature was measured is recorded (step S54). Once Steps S52 to S54 are executed, Step S55 is then executed.

  In step S55, it is determined whether the measurement for one year is completed at the date and time recorded in step S54. That is, it is determined whether or not there is a measurement value recorded in the past on the same day that can be compared with the current measurement value. Since past measurement values that can be compared are not recorded for one year after installation, the comparison target is set as product test data as described later (see step S58).

  If it is determined in step S55 that the measurement for one year has been completed (Y in step S55), that is, if there is a measurement value recorded on the same day in the past, step S56 is executed next.

  In step S56, the current measured value is compared with the past annual change pattern, and it is determined whether or not the temperature change of the anti-vibration rubber is normal based on the comparison result. Here, the change amount of the current measurement value from the reference value (0% output value stored in the control device) is within a predetermined range with the change amount of the measurement value on the same day in the past annual change pattern. , It is determined whether they are substantially equivalent. If they are substantially equal, it is determined that the temperature change of the vibration isolating rubber is “normal”. In addition, if the amount of change in the current measured value exceeds the predetermined range with respect to the amount of change in the measured value on the same day in the past, and the two differ greatly, the temperature change of the anti-vibration rubber is “abnormal”. Determined.

  If it is determined as “normal” in step S56, the load detector output during operation is corrected using the amount of change in the current measurement value as the correction amount (step S57). That is, the correspondence between the car load and the load detector output is corrected so that the current measured value becomes the 0% output of the load detector. If step S57 is performed, it will return to step S50 and the process after step S50 will be performed repeatedly. Thereby, the load in a cage | basket | car can be detected correctly with respect to the temperature change of a vibration-proof rubber.

  If it is determined as “abnormal” in step S56, the control device notifies the outside (for example, maintenance management company) of an actual load adjustment work execution instruction (step S59). When this notification is received, the actual load adjustment operation as shown in FIG. 4 is performed by a maintenance engineer or the like. If no abnormality is detected in the actual load adjustment work (N in step S60), it is determined that the current measurement value (K) is on the new change pattern, and the already created annual change pattern is based on the current measurement value. (Step S63), and the load detector output during operation is corrected using the change amount of the current measurement value as the correction amount (step S57).

  If an abnormality is detected in the actual load adjustment work (Y in step S60), the control device notifies the vibration isolating rubber replacement instruction, and the vibration isolating rubber is replaced by the maintenance engineer (step S61). When the anti-vibration rubber is replaced, the state of the anti-vibration rubber becomes equivalent to that at the time of elevator installation, and thus the already measured annual change pattern is reset (step S62).

  If it is determined in step S55 that the measurement for one year has not been completed (N in step S55), that is, if there is no measurement value recorded on the same day in the past, step S58 is executed next. .

  In step S58, the current measured value is compared with the product test pattern, and it is determined whether or not the temperature change of the anti-vibration rubber is normal based on the comparison result. Here, it is determined whether the amount of change in the current measurement value from the product test pattern is within a predetermined range and is substantially equivalent. If they are substantially equal, it is determined that the temperature change of the vibration isolating rubber is “normal”. Further, when the amount of change in the measured value this time exceeds a predetermined range with respect to the product test pattern and the two are greatly different from each other, it is determined that the temperature change of the vibration isolating rubber is “abnormal”. If it is determined as “normal”, the above-described step S57 is executed. If it is determined as “abnormal”, the vibration isolating rubber is an initial defective product, and therefore the above described steps S61 and S62, that is, vibration isolating rubber replacement is performed. And the measurement pattern reset is executed.

  As described above, according to the diagnostic processing shown in FIG. 6, load detection accuracy can be ensured with respect to the temperature change of the vibration-proof rubber. The characteristic change of the anti-vibration rubber depends on a plurality of factors such as the installation environment of the elevator, the frequency of use, and the accumulated value of the load capacity. Therefore, the characteristic change differs for each elevator. Therefore, in order to ensure load detection accuracy, the actual load adjustment work may be performed periodically. On the other hand, according to the diagnostic processing shown in FIG. 6, the actual load adjustment timing can be accurately determined according to the state of the change in the characteristics of the vibration-proof rubber, so that the frequency of the actual load adjustment work can be reduced. .

  According to the above-described embodiment, the state of characteristic change of the anti-vibration rubber is determined based on the temporal change of the detection output of the load detector that detects the load in the car according to the deflection of the anti-vibration rubber. Therefore, it is possible to accurately determine whether or not the vibration isolating rubber needs to be replaced or whether or not the actual load adjustment is necessary. Furthermore, the detection output value of the load detector for a predetermined load (0% load, 100% load) can be set appropriately. Therefore, the accuracy of load detection when the car is in operation (during service operation) is maintained, and the riding comfort of the elevator can be kept good.

  In addition, the elastic body (spring body etc.) which bends according to the load in a cage | basket | car is applicable not only to an anti-vibration rubber | gum. Further, in the above embodiment, during the actual load adjustment, it is determined whether or not the anti-vibration rubber needs to be replaced based on a temporal change in the detection output of the load detector when the weight is removed (at the time of pulling) The determination is not limited to this, and the determination may be made based on a temporal change when the weight is loaded (when weighting). In addition, since the characteristic change of the anti-vibration rubber is likely to appear in the shape restoration state, the accuracy of determining the characteristic change state of the anti-vibration rubber is improved based on the temporal change of the detection output of the load detector at the time of pulling. . Moreover, in the said embodiment, as shown in FIG. 6, the annual change pattern of the output of the load detector when the inside of the car is unloaded (output when the car is unmanned) is created. A constant load may be used.

  In addition, this invention is not limited to embodiment mentioned above, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of the embodiment.

  For example, the elevator may be an elevator provided with a machine room or a machine room-less elevator.

DESCRIPTION OF SYMBOLS 11 Car frame 12 Brake 13 Anti-vibration rubber 14 Load detector 15 Balance weight 16 Hoisting machine 17 Wire rope 18 Baffle 19 Controller 20 Transmission cable 21 Passenger

Claims (7)

A load detector that detects the load in the car according to the bending of the elastic body;
A control device for controlling the operation of the car based on the load in the car;
An elevator device comprising:
The control device includes:
Stores the detection output value of the load detector for a predetermined load value, and measures the load in the cage from the output of the load detector based on the detection output value during operation of the cage,
The elevator apparatus characterized by determining the state of the characteristic change of the said elastic body based on the time characteristic of the output of the said load detector with respect to the said predetermined load value. The elevator apparatus according to claim 1,
The detection output value of the load detector with respect to the predetermined load value is set in the control device by an actual load adjustment given by a weight on which the predetermined load value is loaded in the car,
The time characteristic of the output of the load detector is a return time of the output of the load detector to 0% output when the weight is removed from the car in the actual load adjustment. Elevator device. The elevator apparatus according to claim 1,
The detection output value of the load detector with respect to the predetermined load value is set in the control device by an actual load adjustment given by a weight on which the predetermined load value is loaded in the car,
The elevator apparatus according to claim 1, wherein the temporal characteristic of the output of the load detector is an inclination of a linear change of the output of the load detector when the weight is lowered from the car in the actual load adjustment. The elevator apparatus according to claim 2 or claim 3,
The control device includes:
An elevator apparatus characterized by determining that the elastic body needs to be replaced if the output of the load detector does not return to 0% when the weight is lowered from the car. The elevator apparatus according to claim 1,
The detection output value of the load detector with respect to the predetermined load value is set in the control device by an actual load adjustment given by a weight on which the predetermined load value is loaded in the car,
The control device includes:
An elevator apparatus characterized by determining that the actual load adjustment needs to be re-executed when the output of the load detector vibrates due to shaking of the car. The elevator apparatus according to claim 1,
The time characteristic of the output of the load detector is a change pattern indicating a transition of the output of the load detector with respect to the predetermined load in the car during operation of the car. . An adjustment method for an elevator load detector that detects a load in an elevator car according to the bending of an elastic body,
The detection output value of the load detector for a predetermined load, which is set to measure the load in the car during operation of the car, is calculated using the weight loaded in the car with the predetermined load. Detect it by giving it to the cage
A method of adjusting an elevator load detector, characterized by determining a state of change in characteristics of the elastic body based on a temporal characteristic of an output of the load detector with respect to the predetermined load applied to the car. .

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