JPH0420477A - Intra-cage abnormal vibration sensing device - Google Patents

Abstract

PURPOSE:To preclude accident occurrence by storing the size of vibration of an elevator cage in a memory of a microcomputer when the size has exceeded a certain level, counting the number in the memory, and issuing an alarm when the count has exceeded a specified value. CONSTITUTION:When the size of vibration generated in an elevator cage 8 has, for ex., exceeded 15 gal, it is judged as abnormal, and an alarm 6 shall ring when such an abnormal value occurs more than three times per 10-min period. In case one of the junctions 13 of rail 7 goes abnormal to generate abnormal vibration each time the cage 8 passes this junction 13, a sensor 1 senses this abnormal vibration value, and a microcomputer 3 stores in memory that this sensing value is generated, and the number in the memory is counted. because the count is generated more than three times per 10-min period, the alarm 6 rings to inform that an abnormality is generated in association with the rail. Thus trouble can be prevented in advance.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an in-car abnormal vibration detection device that constantly monitors abnormal vibrations in an elevator car and detects abnormalities in parts of the elevator at an early stage.

[Conventional technology]

As disclosed in, for example, Japanese Unexamined Patent Publication No. 54-3745 and Japanese Utility Model Application No. 56-132278, the elevator car is moved up and down via guide shoes along rails set up in the hoistway. Run to. This relationship will be explained using FIG.

In FIG. 3, 7 is a rail installed in a hoistway (not shown), 8 is a car, 9 is a heel frame, 10 is a vibration-proof rubber provided between the heel 8 and the car frame 9, and 11 is a car frame 9 It is suspended from a rope 12 along the rail 7 by guide shoes provided on the top, bottom, left and right of the board, and is raised and lowered up and down. In addition, 13 is rail 7
They are connected by a connecting tool (not shown) at the joint.

[Problem to be solved by the invention]

By the way, in the above-mentioned elevator system, if, for example, the connector of the rail 7 (not shown) becomes loose, the gap between the joint 13 becomes large, or the guide shoe 11 wears out, the impact between the guide shoe 11 and the joint 13 becomes large, and the car is damaged. Abnormal vibrations occur inside the car, which not only makes the ride uncomfortable inside the car, but also causes damage if left in this condition for a long period of time.
There is also a risk that a serious accident may occur.

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, the present invention provides a detection device that constantly monitors abnormal signals within the car, detects abnormalities in elevator parts at an early stage, and prevents accidents.

[Means to solve the problem]

The purpose of this is to include a detector that detects the magnitude of longitudinal or lateral vibration of an elevator car, a microcomputer, and an alarm. This is achieved by providing means for storing in a memory, means for counting the number of memories, and means for notifying via the alarm when the count value exceeds a predetermined value.

[Effect]

Now, when the magnitude of vibration inside the car is 15 gaQ or more, it is determined that it is abnormal, and the time alarm is set to sound when this abnormal value occurs three or more times in 10 minutes. Rail, Guy I
・If the shoe etc. are normal, there will be no vibration inside the car, so there is no problem.

By the way, let us assume that one joint of the rail is defective, and abnormal vibration occurs every time the car passes through that joint. The detector detects this abnormal vibration value, and the microcomputer stores the occurrence of this detected value and counts the number of memories. Since this count value occurs three or more times in 10 minutes, the alarm will sound and it will be known that an abnormality has occurred in the rail relationship, making it possible to prevent a failure from occurring.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the in-car abnormal vibration detection device of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a circuit configuration diagram of the present invention, and this device is composed of three parts: an input device section, a microcomputer section, and an output device section. In the input device section,
1 is a detector for detecting abnormal vibrations inside the car, xl
is the abnormal vibration output value.

11 is a running detection contact that detects that the car is running, and x2 is the running detection output value of the car. In the microcomputer section, 3 is the CPU, 31 is the ROM, 4 is the counter, and 2 is the abnormal vibration output value X□ and the running detection output value X2.
5 is an interface for importing into the CPU 3, 5 is an interface for notification, and y is an output value for notification. The output device is an annunciator 6 that amplifies and notifies the output value y for notification.
It is made up of.

Next, the operation of this embodiment will be explained using the flowchart shown in FIG. Now, when the connector of the rail 7 (not shown) becomes loose and abnormal vibration occurs inside the car, the detector 1 outputs a design vibration output X.

The CPU 3 takes in the sustaining vibration output X□ via the interface 2. Next, the acquired abnormal vibration output If the car is not running, the time is written to the memory. Next, the number of memories at the time written in the memory is counted back for 10 minutes and written to the counter 4. Next, the CPU 3 compares the count value of the counter 4 with a predetermined value 3 (assuming that the predetermined value is 3 times), and if the count value is 3 times or less, clears the counter 4 and newly outputs the abnormality detector 1. Take in X□. If the number of times is 3 or more, the notification output y□ is sent to the notification device 6 via the interface 5.
The alarm 6 sounds to notify that there is an abnormality in the rail 7, thereby preventing a failure.

On the other hand, temporary abnormal vibrations caused by mischief by passengers, etc.
Since the counter 4 does not count once the number of minutes has elapsed, malfunctions due to mischief or the like will not occur, and the output of the CPU 3 can be remotely monitored by a service center or the like using a telephone line.

[Effects of the Invention] According to the present invention, even if abnormal vibration occurs inside the car due to loosening of the rail connector or wear of the guide shoe, it is immediately reported and can be quickly dealt with. It will not be left unattended for a long period of time or cause a serious accident.

[Brief explanation of drawings]

FIG. 1 is a circuit configuration diagram showing an in-car abnormal vibration detection device according to an embodiment of the present invention, FIG. 2 is a flow chart diagram, and FIG. 3 is a schematic diagram of an elevator hoistway. 1...Detector, 2...Interface, 3...CPU, 4...Counter,
5...Interface, 6...Alarm, 7...Rail, 8...Car, 11...
...Guide shoe, 13...Rail joint. (Input light 1) Figure (Ficrocon Ot° Knee 9-) (Hire Seika) Figure 2 Figure 3 Figure 1: Detector 2: Ink-Face 3: CPU 4: Counter 5; Interface 6: Surplus Strike 7: Rail shi 8: Force ゝ2'' 11, Force 1' Idunyu 13: Rail vertical

Claims (1)

[Claims] (1) A detector, a microcomputer, and an alarm are installed to detect the magnitude of longitudinal or lateral vibration of the elevator car that runs along the rails installed in the hoistway. When the vibration value exceeds the specified value,
means for storing in the memory of the microcomputer;
An in-car abnormal vibration detection device comprising means for counting the number of memories, and means for notifying via the alarm when the count value exceeds a predetermined value.