JPH11199155A - Abnormality diagnostic device for hydraulic elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an abnormality diagnostic device for a hydraulic elevator, which can grasp the forerunners of abnormalities before parts which substantially interfere with continuous operations, get out of order. SOLUTION: Data for the landing level of a car 9 and data for an inching operation actuating condition are inputted into a data measurement part, and it is so designed that, when no inching operation is started even when the landing level of the car is due to start inching, a car position detector 11 it out of order, when the inching operation occurs repeatedly at every floor, a positector 8 is out of order, and when the inching operation occurs repeatedly at specified floors, a shielding plate 7 is out of order.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for diagnosing abnormality of a hydraulic elevator for diagnosing abnormality of a hydraulic elevator, and more particularly to an apparatus for diagnosing abnormality of a hydraulic elevator for finding the necessity of maintenance of a hydraulic component before a failure.

[0002]

2. Description of the Related Art As described in Japanese Utility Model Application No. 6-3682, a conventional abnormality diagnosis apparatus for a hydraulic elevator is provided with a specific combination of the operations of the respective positive protectors in a hydraulic elevator in which a plurality of positive protectors are installed. There is known a device in which a malfunction of a positive protector is determined.

[0003]

However, in the conventional abnormality diagnosis of a hydraulic elevator, the malfunction of a specific positive protector is determined based on a combination of the operations of the positive protectors as described above, so that the positive protector does not fail. As long as it cannot be detected, it is impossible to grasp in advance that a failure has occurred and take preventive measures.

[0004] It is an object of the present invention to provide a hydraulic elevator abnormality diagnosis apparatus capable of grasping a precursor of an abnormality before a part that substantially hinders operation becomes abnormal. Is to do.

[0005]

In order to achieve the above object, the present invention provides a car position detector for measuring an arrival floor and a landing level of a car, a positive detector on the car, and an elevator tower. Diagnosis of hydraulic elevator abnormalities provided with a shield plate provided at a position corresponding to the above-mentioned positive protector on each floor of the car, and performing an inching operation for correcting when the landing level of the car exceeds a predetermined set value. In the device, when the landing level exceeds a predetermined set value but does not perform the inching operation, an abnormality determination unit that determines that the car position detector is abnormal, or the floor on which the inching operation has been performed and When it is determined from the operation state of the inching operation that the inching operation occurs frequently on an arbitrary floor, an abnormality determination unit that determines that the positive protector is abnormal is provided. And wherein the digit.

[0006] As described above, the abnormality diagnosis device for a hydraulic elevator according to the present invention includes an abnormality determination unit that determines that the car position detector is abnormal when the landing level exceeds a predetermined set value but the inching operation is not performed. Alternatively, when the inching operation is determined to occur frequently on an arbitrary floor based on the floor on which the inching operation was performed and the operating state of the inching operation, an abnormality determination unit for determining that the positive protector is abnormal is provided. By monitoring the inching operation status, it is possible to grasp the precursor of a positive detector or a position detector that substantially hinders the operation before it becomes defective.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a schematic configuration of a hydraulic elevator abnormality diagnosis device according to an embodiment of the present invention. A plunger 2 is fitted into the cylinder 1 so as to be able to move up and down. A pulley 4 is attached to the upper end of the plunger 2. One end of the pulley 4 is in the car 9
And an intermediate portion of a main rope 3 whose other end is connected to the cylinder 1 is hung. In car 9
A car position detector 11 is attached via a car side rope 6 and a car side pulley 5, and the car position detector 11 is used when the car 9 arrives at the floor of the arrival floor and the elevator hall 10. The landing level, which is the deviation, is measured. Here, assuming that the landing level measured by the car position detector 11 is a predetermined set value, for example, +25 mm out of ± 20 mm, the elevator controller 12 sets the landing level of the car 9 to 0 mm,
That is, the inching operation is performed in the descending direction to correct the landing position. Further, a positive protector 8 is attached to the upper part of the car 9, while a shielding plate 7 is arranged at a position corresponding to the positive protector 8 for each floor in the elevator tower. It is configured to operate when corresponding to each shielding plate 7. The data from the car position detector 11 and the operation signal between the positive protector 8 and each shielding plate 7 are configured to be taken in from the elevator control device 12 to the abnormality diagnosis unit 20.

FIG. 2 is a block diagram showing a main part of an elevator abnormality diagnosis apparatus. The abnormality diagnosis unit 20 includes a data measurement unit 21 that captures data, a central processing unit 24 that processes data, and a data storage unit 2 that stores data.
2 and an abnormality determination unit 23 for determining abnormality.

Next, the operation of the abnormality diagnosis unit 20 when the elevator performs the above-described inching operation will be described with reference to the flowchart shown in FIG. First, step S11
The arrival floor of the elevator is detected by the car position detector 11, and the data measuring unit 2 is detected via the elevator control device 12.
Take in 1. The received arrival floor data is passed to the central processing unit 24 and stored in the data storage unit 22. Next, in step S12, the landing position at the arrival floor of the elevator is measured by the car position detector 11, and the landing level data is fetched into the data measurement unit 21 via the elevator controller 12, and the fetched landing level is acquired. Central processing unit 2 for data
4 and stored in the data storage unit 22. Step S1
In step 3, the central processing unit 24 compares the landing level data measured in step S12 with a predetermined value set in advance, and performs an abnormality determination process if the measured landing level data is within the set value range. If the measured landing level data exceeds the set value, the process is terminated in the subsequent step S14.
It is determined whether or not the elevator performs the inching operation. If the elevator does not perform the inching operation, the abnormality determination unit 23 determines that the car position detector 11 is abnormal in step S20.

On the other hand, if the inching operation is normally performed in step S14, the central processing unit 24 monitors in step S15 whether or not the inching operation has been completed once. For example, before the start of the inching operation, the landing level data is +25 mm and exceeds the range of the set value ± 20 mm. As a result of performing one inching operation in the descending direction, the set value range becomes -21 mm. If it exceeds again, the inching operation in the ascending direction is performed again to correct the landing level to 0 mm. At this time, assuming that two inching operations have been performed, the number of inchings is taken from the data measuring unit 21 and stored in the data storage unit 22.

Next, at step S16, the central processing unit 24
Determines whether the inching operation occurs frequently on an arbitrary floor from the floor on which the inching operation was performed and the number of inching operation operations held in the data storage unit 22. For example, assuming that about 500 inching operations are performed per month on each of the three floors, it is determined that the inching operation is frequent, that is, the inching operation is frequent on all floors, and the landing level is determined in step S17. It is determined that the positive detector 8 that determines the 0 mm landing position is abnormal. Here, the number of times of the inching operation is set to about 500 times, but this criterion can be set arbitrarily.

Also, 50 times on the first floor per month and 5 times on the second floor
If the inching operation is performed about 00 times and about 50 times on the third floor, it is determined in step S16 that there is no frequent occurrence of arbitrary floors, and in step S18, it is determined that the inching operation is frequently occurring on the specific floor. In step S19, the shield plate 7 of the specific floor installed in the elevator tower to operate the positive detector 8 for determining the landing position at the landing level of 0 mm.
Is determined to be abnormal. In addition, if about 50 inching operations are performed on each floor per month, it is not determined in step S16 that there is frequent occurrence of inching operation on any floor, and in step S18, it is also determined that many inching operations are performed on the specific floor. Otherwise, it is determined that the inching operation of the elevator is normal, and the abnormality determination processing ends.

As described above, by examining the occurrence of the inching operation on each floor, before the positive detector 8, the shielding plate 7, and the car position detector 11 which cause a substantial hindrance to the operation become a bad sign, it becomes a problem. Can be grasped and dealt with, and a situation in which driving becomes impossible can be prevented beforehand.

Steps S16 and S18
Is used to determine the frequent occurrence of inching operation, but this determination may be made by the total number of times as described above, or by the number of inching operation operations. Further, the results of the abnormality determination in steps S17, S19 and S20 may be reported to the monitoring center by a monitoring device (not shown), or the abnormality determination results may be read out from the monitoring center periodically or irregularly. May be.

[0015]

As described above, the abnormality diagnosis apparatus for a hydraulic elevator according to the present invention determines at least the abnormality of the positive detector and the car position detector from the occurrence state of the inching operation for adjusting the landing position of the elevator. The diagnosis unit is provided, so that it is possible to grasp the signs before the malfunction of the positive detector and the car position detector, which cause a substantial hindrance to driving, and to deal with them. Can be.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a hydraulic elevator abnormality diagnosis device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a main part of the abnormality diagnostic device for the hydraulic elevator shown in FIG. 1;

FIG. 3 is a flowchart showing the operation of the hydraulic elevator abnormality diagnosis device shown in FIG. 1;

[Description of Signs] 7 Shielding plate 8 Positive protector 9 Riding car 11 Car position detector 12 Elevator control device 20 Error diagnosis unit 21 Data measurement unit 22 Data storage unit 23 Error judgment unit 24 Central processing unit

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Joe Yoshimiya 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Inside Hitachi Building System Co., Ltd.

Claims (3)

[Claims] 1. A car position detector for measuring an arrival floor and a landing level of a car, a positive detector on the car, and a shield provided on each floor in an elevator tower at a position corresponding to the positive detector. Plate, the abnormality diagnosis device for a hydraulic elevator configured to perform inching operation for correcting when the landing level of the car exceeds a predetermined set value, wherein the landing level exceeds a predetermined set value. An abnormality diagnosis device for a hydraulic elevator, further comprising an abnormality determination unit that determines that the car position detector is abnormal when the inching operation is not performed. 2. A car position detector for measuring an arrival floor and a landing level of a car, a positive detector on the car, and a shield provided on each floor in an elevator tower at a position corresponding to the positive detector. A floor for which the inching operation has been performed and the inching operation, wherein the inching operation is performed when the landing level of the car exceeds a predetermined set value. An abnormality diagnosis device for a hydraulic elevator, comprising: an abnormality determination unit that determines that the positive protector is abnormal when it is determined that the inching operation occurs frequently on an arbitrary floor from the operation state of (1). 3. The apparatus according to claim 2, wherein the abnormality determination unit determines that the inching operation occurs frequently on a specific floor based on the floor on which the inching operation is performed and an operation state of the inching operation. An abnormality diagnosis device for a hydraulic elevator, which determines that the shielding plate on the specific floor is abnormal.