JPH07257861A - Elevator maintenance device - Google Patents

Abstract

PURPOSE:To provide an elevator maintenance device which can sense any poor function part for each division before an elevator door goes in full failure and send appropriate information to a maintenance operator stationed remotely. CONSTITUTION:A current sensing means 17 senses the load current flowing in a door motor of elevator, and a dislocation sensing means is composed of sensor light-receiving parts 13b, 13c to sense the dislocation of the upper part relative to the lower part in the door moving direction when the door motor is operated to open or shut the door. A maintenance command output means 19 judges if the applicable door is in poor function on the basis of the sensed amperage by the means 17, a dislocation signal given by the light receiving parts 13b, 13c, and the door open/shut signal from a control board 18. On the basis of the result from judgement, a door rail maintenance command or a threshold maintenance command is given to a transfer device 20, which forwards the given maintenance command to a receiver device 21 provided remotely via a telephone circuit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator maintenance device for detecting a defective portion when an elevator door is abnormal and performing maintenance.

[0002]

2. Description of the Related Art Conventionally, an elevator maintenance device of this type is shown in FIG. In FIG. 6, 1
8 is an elevator control panel for controlling the elevator, 1
9 detects the door opening signal output from the elevator control panel 18 for each door opening operation, and the elevator cannot be used when a predetermined set time set in the time determination circuit 19a having the built-in door open time elapses. It is an output condition determining device that outputs a signal, and the elevator unusable signal is sent to a receiving device 21 at a remote place via a transfer device 20.

That is, the elevator control panel 18 turns off the door open signal when the elevator door reverses based on the door close signal after reaching the door open end position after outputting the door open signal. When the elevator door does not reach the end-of-door-opening end position or does not perform the reversing operation due to some influence, and the door-opened state has elapsed for the set time or longer, the output condition determination unit 19 determines the time by the built-in time determination circuit 19a. Based on the abnormality, an elevator unusable signal is output, and the elevator unusable signal is sent to the receiving device 21 at a remote place via the transfer device 20,
On the basis of this, the receiving side operates as a remote monitoring device for judging a failure of the door and confirming a door open failure state so that the receiver can go to repair.

That is, FIG. 7 shows the output condition judging device 19 described above.
2 is an operation flowchart of FIG. First, a door opening signal from the elevator control panel 18 is detected for each door opening operation (step S71). After that, when the elevator door does not perform the reversing operation and the door opening state continues even after an arbitrary time has elapsed, , It is determined that the elevator cannot be used (step S7
2), an elevator unusable signal receiving device 21 at a remote location
(Step S73).

[0005]

However, since the conventional device is configured as described above, it is possible to determine the failure state that the door open state continues, but it is possible to prevent the occurrence of the failure before it occurs. It could not be used as an advance notification device to do so. That is, most of the failures related to opening and closing of the elevator doors are dirt and dust clogging of the door rail and the sill, and if this is detected and maintenance is performed, it will not bother elevator users. , In the above-mentioned conventional device, when the door open state continues, it is determined that the elevator cannot be used based on the failure of the elevator door, and during that time, the elevator is stopped, which causes trouble to the elevator user. Become.

The present invention has been made in order to solve the above-mentioned problems of the conventional example, and an object thereof is to obtain an elevator maintenance device capable of detecting a defective location for each part before a failure of an elevator door occurs.

It is another object of the present invention to provide an elevator maintenance device that can automatically notify a remote place of the maintenance time of a defective place before a failure occurs.

[0008]

An elevator maintenance device according to a first aspect of the present invention supplies drive power to a door motor based on a difference between a predetermined pattern voltage and a detected voltage corresponding to the number of rotations of the door motor. A door motor control device for controlling a load current to the door motor by controlling a drive element, a current detecting means for detecting the load current, and a shift between an upper portion and a lower portion in the traveling direction of the car door when the door motor is opened and closed. Deviation detection means for detecting the car door, the current detected by the current detection means, the door opening / closing signal of the car door, and the deviation detection signal by the deviation detection means to determine a defective part of the car door, and the door rail based on the determination result. A maintenance command output means for outputting a maintenance command or a threshold maintenance command is provided.

An elevator maintenance device according to a second aspect of the present invention comprises a transfer device for transferring a door rail maintenance command or a sill maintenance command from the maintenance command output means to a receiving device provided at a remote place via a telephone line. It is characterized by that.

Further, in an elevator maintenance device according to a third aspect of the present invention, the deviation detecting means is provided at a sensor light emitting portion fixed to a car door and at an upper portion and a lower portion with respect to an optical axis of the sensor light emitting portion. It is characterized by comprising a pair of sensor light receiving portions which are fixed to the car door and which receive the light emitted from the sensor light emitting portion.

[0011]

In the elevator maintenance device according to the first aspect of the present invention, the maintenance command output means detects the current detected by the current detecting means for detecting the load current to the door motor, and the traveling direction of the car door when the door motor is opened and closed. Of the car door based on the deviation detection signal from the deviation detection means that detects the deviation between the upper part and the lower part of the car and the door opening / closing signal of the car door, and based on the judgment result, the door rail maintenance command or the sill maintenance command. By outputting, the dirt or clogging of the door rail or the sill, which accounts for most of the failures related to the opening and closing of the car door, is specified and the failures due to these are prevented.

Further, in the elevator maintenance device according to the second aspect, the transfer device transfers the door rail maintenance command or the sill maintenance command by the maintenance command output means to a receiving device provided at a remote place via a telephone line. By doing so, it is not necessary for maintenance personnel to perform regular maintenance and maintenance, and it is not necessary to go to the elevator installation location until a maintenance command is automatically sent, and labor can be saved for maintenance.

Further, in the elevator maintenance device according to a third aspect of the present invention, the deviation detecting means is located at a sensor light emitting portion fixed to a car door and at an upper portion and a lower portion with respect to an optical axis of the sensor light emitting portion. It is fixed to the car door and consists of a pair of sensor light receiving parts that receive the light emitted from the sensor light emitting part, so that dirt or dust clogging of the door rail or sill can be adjusted to the open side (back side) depending on the door opening / closing mode. Side) or closed side (inside), making it easy to perform maintenance.

[0014]

【Example】

Example 1. Hereinafter, the present invention will be described based on illustrated embodiments. 1 and 2 are a configuration diagram showing an elevator door portion of an elevator maintenance device according to a first embodiment and a partially enlarged view of portions A, B, and C of FIG. 1. 1 and 2, 1 is a door motor, 2 is a door interlocking arm attached to the door motor 1, 3 is a car door that is opened and closed by the door interlocking arm 2, and 4 is a car door that is attached to the top of the car door 3. Door hangers for hanging the door 3 on a car door rail, and reference numerals 5 are open-side door rail garbage piled up on the open side of the door rail.

Further, as shown in FIG. 2 (a) and (b) in an enlarged manner, 6 is attached to the bottom of the car door 3 and slides in the sill groove to prevent the lower part of the car door 3 from tilting in the front-rear direction. Door legs to prevent, 7 is a sill attached to the bottom of the car door 3, 8
2 shows the enlarged door sill waste on the open side of the sill 7, 9 indicates the closed door rail trash accumulated on the closed side of the door rail, and 10 indicates the top of the car door 3 as shown in FIG. A car door rail 11 for guiding the attached car door 3 is provided with a sill 7 as shown in an enlarged view in FIG.
It is the closed-side door sill garbage that is piled up on the closed side.

Further, reference numerals 12 and 13 denote a sensor support arm attached to the sill 7 and a sensor as a deviation detecting means. The sensor 13 is near the center of the car door 3 as shown in an enlarged view in FIG. 2 (c). Sensor light-emitting part 1 fixed to
3a, and sensor light-receiving portions 13b and 13c fixed to the car door by the sensor support arm 12 at positions above and below the optical axis X of the sensor light-emitting portion 13a. It is designed to detect the deviation of the upper and lower parts in the direction.

Next, FIG. 3 is a block diagram of a control device for the door motor 1. In FIG. 3, reference numeral 14 is a drive element formed of a thyristor for supplying drive power to the door motor 1, and 15 is for mechanically connecting to the door motor 1 to detect the actual speed of the door motor 1. A tachogenerator that outputs a detected voltage according to the 16
Is based on the detection voltage from the tachogenerator 15 and the pattern voltage from the door opening / closing pattern generator (not shown) so that the voltage difference becomes zero, that is, the detection voltage from the tachogenerator 15 is not shown. A control circuit for controlling the drive element 14 so that the door motor 1 obtains a predetermined speed by controlling the drive element 14 so as to match the pattern voltage from the pattern generator. Reference numeral 17 denotes a door load flowing through the drive element 14. It is a current detection means for detecting the current I.

FIG. 4 is a block diagram showing an elevator maintenance device according to the first embodiment. In FIG.
The same parts as those of the conventional example shown in FIG. 6 are designated by the same reference numerals, and the description thereof will be omitted. As a new configuration, 19 is a current I detected by the current detecting means 17, a door opening / closing signal of the control panel 18 installed in the machine room, and upper and lower parts in the traveling direction of the door obtained from the sensor light receiving unit 13. Shows a maintenance instruction output means for determining a defective portion based on the deviation detection signal and outputting a door rail maintenance instruction or a sill maintenance instruction according to the determination result. The door rail maintenance instruction or the sill maintenance instruction from this maintenance instruction output means 19 is shown. Is the transfer device 20
Device 2 installed at a remote location via a telephone line
1 is transmitted.

Next, the operation of the above configuration will be described with reference to the operation flowchart of the maintenance command output means 19 shown in FIG. First, the door opening mode is determined based on the door opening signal from the control panel 18 (step S11), and the maximum value of the door load current I detected by the current detecting means 17 for each door opening operation is set to a predetermined number n. The addition is sequentially performed until reaching, and the addition result ΣI _n is obtained (steps S12 and S13). When the number of repetition N is equal to or larger than the predetermined number n sequentially updated according to the addition result .SIGMA.I _n the ΣI _n = ΣI _N -ΣI _Nn current maximum value, always get the sum of the maximum voltage value of the most recent n times (Step S14).

Next, the latest n times of current maximum value addition result ΣI _n is divided by a predetermined number of times n arbitrarily specified, and the latest n times of average current value ΣI _n / n is obtained. The threshold value I _x is compared (step S15). That is, by averaging the detection currents when the door is opened n times at all times, it is possible to prevent erroneous detection due to an accidental abnormal value that causes the cause to be immediately removed, and to increase the detection current and the stain determination current due to accumulated dirt. A comparison is made with the threshold value I _X.

Here, for example, if dust or sticky matter adheres to the sliding portions of the car door rail 10 or the groove of the sill 7 shown in FIG. 1, it is based on the pattern voltage from the door opening / closing pattern generator (not shown) in FIG. The speed of the driven door motor 1 decreases due to the load of the sliding portion, and as a result, the output voltage of the tacho generator 15 also decreases. Therefore, at this time, the drive circuit 14 is controlled by the control circuit 16 so that the door load current I flowing through the drive circuit 14 rapidly increases to generate a torque corresponding to the load. In step S15, the latest n times of average current values obtained by dividing the latest n times of current maximum value addition results ΣI _n by a predetermined number of times n when the door load current I rapidly increases. ΣI _n / n is compared with the dirt determination current threshold value _IX to detect a failure due to dirt or clogging of the door rail 10 and the sill 7, which account for most of the failures related to the opening and closing of the door.

Next, in the judgment step S15,
When the result is yes, the failure location is identified in the defective location determination flow together with the shift detection signals of the upper and lower portions in the door traveling direction obtained from the sensor light receiving units 13b and 13c. That is, the sensor light receiving unit 13 shown in FIG.
b and 13c, the door rail trash 9 or the door sill trash 8 on the back side shown in FIG. 1 is identified based on the upper and lower shift detection signals in the door traveling direction, and a door rail maintenance command or a sill maintenance command is output. . For example, the upper sensor light receiving portion 13b shown in FIG. 2C is the sensor light emitting portion 13a.
When the light emitted from is received, a maintenance command for the door rail 10 on the open side (back side) is output (steps S16 and S1).
8), the lower sensor light receiving portion 13c is the sensor light emitting portion 1
When the emitted light from 3a is received, a maintenance command for the open side (back side) threshold 7 is output (steps S17, S1).
9).

The above-mentioned maintenance command for the door rail 10 on the open side (back side) or the maintenance command for the sill 7 on the open side (back side) is provided at a remote location by the transfer device 20 in FIG. It is transmitted to the receiving device 21.
Therefore, the defective place is detected for each part before the failure of the elevator door, and the maintenance time of the defective place can be automatically notified to the receiving device 21 at the remote place before the failure occurs. There is no need to go out until input is made.

The door closing mode is the same as the above-mentioned door opening mode. First, the door closing mode is determined based on the door closing signal from the control panel 18 (step S21). Door load current I detected by the current detection means 17
Is sequentially added until a predetermined number of times n is reached, and an addition result ΣI _n is obtained (steps S22 and S23). When the number of repetition N is equal to or larger than the predetermined number n sequentially updated according to the addition result .SIGMA.I _n the ΣI _n = ΣI _N -ΣI _Nn current maximum value, always get the sum of the current maximum value of the latest n times (Step S24).

Next, the latest n times of current maximum value addition result ΣI _n is divided by a predetermined number of times n arbitrarily specified, and the latest n times of average current value ΣI _n / n is obtained. It is compared with the threshold value I _X (step S25). That is, by constantly averaging the detection currents when the door is closed n times, erroneous detection due to an accidental abnormal value that causes the cause to be immediately removed is prevented, and the detection current and the stain determination current that rise due to accumulated stains are prevented. A comparison is made with the threshold value I _X.

When the result of the determination in step S25 is yes, the failure location is identified by the defective location determination flow together with the upper and lower shift detection signals in the door advancing direction obtained from the sensor light receivers 13b and 13c. To do. That is, the sensor light receiving unit 13 shown in FIG.
Based on the shift detection signals of the upper and lower parts in the direction of travel of the door obtained from b and 13c, the inside door rail dust 9 or the door sill dust 8 shown in FIG. 1 is identified and a door rail maintenance command or a sill maintenance command is output. For example, the upper sensor light receiving portion 13b shown in FIG. 2C is the sensor light emitting portion 13a.
When the light emitted from is received, a maintenance command for the closed side (inner side) door rail 10 is output (steps S26 and S2).
8), the lower sensor light receiving portion 13c is the sensor light emitting portion 1
When the emitted light from 3a is received, a maintenance command for the closed side (inner side) threshold 7 is output (steps S27, S2).
9).

The above-mentioned maintenance command for the door rail 10 on the closed side (inside) or the maintenance command for the sill 7 on the closed side (inside) is received by a transfer device 20 in FIG. 21 is transmitted.
Therefore, the defective place is detected for each part before the failure of the elevator door, and the maintenance time of the defective place can be automatically notified to the receiving device 21 at the remote place before the failure occurs. There is no need to go out until input is made.

[0028]

As described above, according to the first aspect of the present invention, the maintenance command output means detects the current detected by the current detecting means for detecting the load current to the door motor, and the car door when the door motor is opened and closed. Based on the deviation detection signal by the deviation detection means that detects the deviation between the upper part and the lower part in the traveling direction and the door opening / closing signal of the car door, the defective part of the car door is judged, and the door rail maintenance command or the sill is issued based on the judgment result. Since the maintenance command is output, there is an effect that it is possible to identify the dirt or clogging of the door rail or the sill, which accounts for most of the failures related to the opening and closing of the car door, and prevent the failures due to these.

According to the second aspect of the present invention, the transfer device transfers the door rail maintenance command or the sill maintenance command from the maintenance command output means to the receiving device provided at a remote place via the telephone line. Therefore, there is no need for maintenance personnel to perform regular maintenance and maintenance, and there is no need to go to the elevator installation site until a maintenance command is automatically sent, which has the effect of saving labor in maintenance.

Further, according to a third aspect of the present invention, the deviation detecting means is provided on the car door located at a sensor light emitting part fixed to the car door and at an upper part and a lower part with respect to an optical axis of the sensor light emitting part. By being composed of a pair of sensor light receiving parts that are fixed and receive the light emitted from the sensor light emitting part, dirt or dust clogging of the door rail or the sill will be open side (back side) or closed side depending on the door open / close mode. There is an effect that it can be specified whether it is (inside) and maintenance can be facilitated.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an elevator door portion of an elevator maintenance device according to a first embodiment of the present invention.

FIG. 2 is an enlarged view of respective portions of A, B and C parts in FIG.

3 is a configuration diagram showing a control device for the door motor of FIG. 1. FIG.

FIG. 4 is a block diagram showing an elevator maintenance device according to the first embodiment of the present invention.

5 is an operation flowchart of the maintenance command output means of FIG.

FIG. 6 is a block configuration diagram showing an elevator maintenance device according to a conventional example.

7 is an operation flowchart of the output condition determiner of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door motor 3 Car door 7 Sill 10 Car door rail 13 Sensor as deviation detecting means 13a Sensor light emitting part 13b Sensor light receiving part 13c Sensor light receiving part 14 Motor drive element 16 Control circuit 17 Current detection means 18 Elevator control panel 19 Maintenance command output means 20 Transfer device 21 Receiver

Claims (3)

[Claims] 1. A door motor control for controlling a load current to a door motor by controlling a drive element for supplying drive power to the door motor based on a difference between a predetermined pattern voltage and a detected voltage corresponding to a rotation speed of the door motor. A device, a current detection means for detecting the load current, a deviation detection means for detecting a deviation between an upper portion and a lower portion in the traveling direction of the car door when the door motor is opened and closed, and a current detected by the current detection means and a car door And a maintenance command output unit that outputs a door rail maintenance command or a sill maintenance command based on the determination result based on the determination result based on the door opening / closing signal and the displacement detection signal from the displacement detection unit. Maintenance equipment. 2. A transfer device for transferring a door rail maintenance command or a sill maintenance command from the maintenance command output means to a receiving device provided at a remote place via a telephone line. Elevator maintenance device. 3. The shift detecting means is a sensor light emitting part fixed to a car door, and is located above and below the optical axis of the sensor light emitting part and is fixed to the car door to be the sensor light emitting part. The elevator maintenance device according to claim 1 or 2, wherein the maintenance device comprises a pair of sensor light receiving portions that receive light emitted from the sensor.