KR101310454B1 - Device for detecting position of elevator car - Google Patents

Abstract

The area | region occupied by a position detector in the horizontal cross section of a hoistway can be suppressed small, and the car position detection apparatus which can lay out easily even when the horizontal dimension of a hoistway is small is provided. For this reason, the car position detection apparatus which detects the position of the elevating direction of the car 1 which elevates the inside of the elevator hoistway WHEREIN: The plate 2 provided in the said car 1; It is arranged along the trajectory through which the plate 2 passes when the car 1 moves up, defines an operating point that is a position of a plurality of stages set along the lifting direction, and the plate 2 is non-contact. In this case, a plurality of position detectors 5a to 5e for outputting signals are provided.

Description

Car position detection device {DEVICE FOR DETECTING POSITION OF ELEVATOR CAR}

The present invention relates to a car position detection device.

In the conventional car position detection apparatus, the following are known as detecting the position of the car lift direction in the terminal part of the elevator hoistway.

That is, in each of the operating points which are positions of a plurality of stages set along the lifting direction, a plurality of plates are mounted discretely with respect to each operating point, and the fixed positions in the horizontal direction of the plurality of plates are operated. By changing from point to point, each operating point is coded so as to be distinguishable from each other. And a position detector which engages in non-contact with these plates and generates a signal indicating that the car has reached one of the operating points when engaged, corresponding to each of a plurality of plates for each operating point, Plurally attached is arranged (for example, refer patent document 1).

Prior art literature

Patent literature

Patent Document 1: Japanese Patent Application Laid-Open No. 05-338949

However, in the conventional car position detection apparatus shown in patent document 1, in order to code each operation point so that a differentiation is possible, the several plate which changed the fixed position of the horizontal direction with respect to each of the operation points is attached. For this reason, in correspondence with the plurality of plates provided for each operating point, a plurality of position detectors should be mounted on the car in the horizontal direction. Due to this, there exists a problem that the ratio of the position detector which occupies for the layout of the horizontal direction in a hoistway becomes large, and freedom of layout falls. In particular, when the horizontal dimension of a car and a hoistway is small, a layout may become very difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and it is possible to reduce the area occupied by the position detector in the horizontal cross section of the hoistway, and to detect the car position, which can be easily laid out even when the hoistway horizontal dimension is small. To get the device.

A car position detecting device according to the present invention comprises: a car position detecting device for detecting a position in a lift direction of a car for elevating an inside of a lift path; a plate provided in the car; A plurality of positions which are arranged along a trajectory through which the plate passes when the car moves up and down, defining operating points which are positions of a plurality of stages set along the lifting direction, and outputting a signal when the plates are engaged in a non-contact manner; It is set as the structure provided with a detector.

In the car position detecting device according to the present invention, the area occupied by the position detector in the horizontal cross section of the hoistway can be suppressed to be small, and the effect of being easy to lay out even when the hoistway's horizontal dimension is small is achieved. .

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the whole structure of the cage | basket | car position detection apparatus which concerns on Embodiment 1 of this invention.
It is a figure which shows the whole structure of the cage | basket | car position detection apparatus which concerns on Embodiment 2 of this invention.
It is a figure which shows the signal converter of the cage | basket | car position detection apparatus which concerns on Embodiment 3 of this invention.
4 is a diagram illustrating an example of a conversion rule of the signal converter according to the third embodiment of the present invention.

Embodiment 1

1 is related to Embodiment 1 of this invention, and is a figure which shows the whole structure of a car position detection apparatus.

1 is an elevator car arrange | positioned so that elevation is possible in the hoistway of an elevator.

The car 2 is provided with a plate 2. This plate 2 is substantially L-shaped in plan view, and is fixed so that the surface corresponding to one of these L-shaped arms is perpendicular to the ground.

On the hoistway wall 3 near the upper vertical layer, the first arm 4a, the second arm 4b, the third arm 4c, the fourth arm 4d, and the fifth arm 4e are sequentially disposed from below. It protrudes in the horizontal direction. These arms are all the same length.

The first position detector 5a is formed on the first arm 4a, the second position detector 5b is formed on the second arm 4b, and the third position detector 5c is formed on the third arm 4c. The fourth position detector 5d is attached to the four arms 4d, and the fifth position detector 5e is attached to the fifth arm 4e perpendicularly to the ground.

These position detectors have a nearly U-shape in plan view. Moreover, these position detectors are arrange | positioned along the trajectory on which the plate 2 passes when the car 1 raises and lowers, and prescribes the operating point which is a position of the several steps set along the lifting direction of the car 1. It is.

That is, since the position detector provided in the upper end layer vicinity is demonstrated here, the 1st position detector 5a attached to the 1st arm 4a prescribes an upper 1st operating point. The second position detector 5b attached to the second arm 4b defines the upper second operating point located above the upper first operating point by a predetermined distance.

Similarly, the third position detector 5c mounted on the third arm 4c has the upper third operating point, respectively, at predetermined intervals, and the fourth position detector 5d mounted on the fourth arm 4d. Denotes the upper fourth operating point, and the fifth position detector 5e mounted on the fifth arm 4e defines the upper fifth operating point, respectively.

Thus, in this way, each operating point is defined by one position detector, respectively, and is distinguished from each other, in other words, the position detector is provided by the same number as the number of operating points.

Further, a lower position detector is provided on the hoistway side near the lower end layer. The lower position detector is the same as the upper position detector described above except that the fixed position is different, and the detailed description thereof is omitted.

The first position detector 5a, the second position detector 5b, the third position detector 5c, the fourth position detector 5d and the fifth position detector 5e are always in an operating state. When the plate 2 of the car 1 is inserted into the U-shaped recess, that is, when contacted non-contactly, it is magnetically shut off and becomes inoperative. It is supposed to be output.

In the car position detection device configured as described above, when the car 1 rises and approaches the upper end floor from the middle floor, and the plate 2 of the car 1 reaches the upper first operating point, The position detector 5a is magnetically cut off by the plate 2 and becomes inoperative. The signal output at this time is input to the control apparatus which is not shown in figure, and it is detected that the car 1 reached the upper 1st operating point.

When the car 1 further rises to the upper second operating point, the second position detector 5b is magnetically blocked by the plate 2 to be inoperative, and the car 1 is controlled by the control device. It has been detected that this upper second operating point has been reached.

Similarly, when the car 1 further rises and reaches the upper third operating point, the third position detector 5c reaches the upper fourth operating point. When the fifth operating point is reached, the fifth position detector 5e is self-blocked by the plate 2, respectively, and becomes inoperative, and the control device detects that the car 1 has reached each operating point. .

Here, in this operation, each position detector detects the position of the car 1 by non-contacting whether or not the plate 2 is in its recess. Although this non-contact detection was performed by magnetic action here, you may carry out by other methods, such as a photoelectric action.

In addition, in the case where the car 1 descends and approaches the lower end floor from the middle floor, the car position detection by the lower position detector is the same as the car position detection by the upper position detector described above, and thus the description thereof is omitted. do.

In the above-described car position detecting device, a plate is provided on the car rather than on the hoistway side, and the track passes through the plate when the car moves up and down, using a position detector that outputs a signal when the plate engages in a non-contact manner. By arranging along the above, and defining the operating point which is the position of a plurality of steps set along the elevation direction by this position detector, the area occupied by the position detector and the plate in the horizontal cross section of the hoistway is respectively one position detector and It can be suppressed small by one plate, and layout property is improved and it can lay out easily also when the horizontal dimension of a hoistway is small.

Embodiment 2 Fig.

2 is related to Embodiment 1 of this invention, and is a figure which shows the whole structure of a car position detection apparatus.

In the second embodiment described herein, when the car position detection is performed also in the middle part of the hoistway, in the vicinity of the upper and lower end portions of the hoistway and the middle part of the hoistway, considering the difference in the hoisting speeds of the car, It is to provide two types of plates.

That is, when the process of detecting the position of the car 1 by the position detector is performed by software (S / W) processing using a microcomputer (microcomputer) or the like, in consideration of the computation period of the microcomputer or S / W In addition, a plate of a predetermined length or more is required so that the plate passing time for one position detector is at least equal to a calculation period.

In order to prevent false detection and improve detection accuracy, a corresponding plate length is required even when a plurality of detections are performed in which a plurality of detections are performed when a plate passes through one position detector.

On the other hand, when the plate length becomes longer, the arrangement interval of the position detector becomes shorter with respect to the plate length this time, and the plate may be simultaneously located in the recesses of two or more adjacent position detectors, which may cause false detection.

Here, in general, the elevator has a slow traveling speed near the end floor and runs at the highest speed near the middle floor. Therefore, in the second embodiment, the high speed traveling plate is mounted when the car 1 lifts the position detector in the middle of the hoistway while mounting the two types of plates for the high speed traveling and the low speed traveling in the car 1. It arrange | positions along the trajectory which passes, and arrange | positions the position detector of the vicinity of a terminal layer along the trajectory which the plate for low speed traveling passes when the car 1 raises and lowers.

More specifically, in Fig. 2, the car 1 is mounted with two kinds of plates, which are substantially L-shaped plates for high speed travel 2a and plates for low speed travel 2b in plan view. In the high speed traveling plate 2a, the plate length dimension along the direction of elevation of the car 1 is longer than the plate length dimension of the low speed traveling plate 2b. In other words, the plate of the low speed traveling plate 2b. The length dimension is short compared with the plate length dimension of the plate 2a for high speed traveling.

The first arm 4a and the second arm 4b protrude in the horizontal direction on the hoistway wall 3 in the middle of the hoistway in order from the bottom, and the first position detector 5a is provided on the first arm 4a. The second position detector 5b is attached to the second arm 4b perpendicularly to the ground, respectively.

These 1st position detector 5a and the 2nd position detector 5b are the position detectors for the high speed traveling, and are arrange | positioned along the trajectory on which the plate 2a for the high speed traveling passes when the car 1 is going up and down. .

Moreover, the 3rd arm 4c, the 4th arm 4d, and the 5th arm 4e protrude in the horizontal direction in the hoistway wall 3 of the upper end layer vicinity from the bottom, and the 3rd arm 4c ), The third position detector 5c is mounted on the fourth arm, the fourth position detector 5d is mounted on the fourth arm 4d, and the fifth position detector 5e is mounted on the fifth arm 4e, respectively, perpendicular to the ground. have.

These 3rd position detector 5c, 4th position detector 5d, and 5th position detector 5e are position detectors for the low speed traveling, and the low speed traveling plate 2b passes when the car 1 is going up and down. It is arranged along the trajectory.

Here, since the high speed traveling plate 2a is mounted on the hoistway wall 3 side from the low speed traveling plate 2b, the high speed traveling plate 2a passes when the car 1 is elevated. The locus is made on the hoistway wall 3 side rather than the locus through which the plate 2b for low speed travel passes.

Accordingly, the first position detector 5a and the second position detector 5b corresponding to the high speed traveling plate 2a may include the third position detector 5c and the fourth position detector (corresponding to the low speed traveling plate 2b). 5d) and the fifth position detector 5e, the lengths of the first arm 4a and the second arm 4b are the third arm 4c, the fourth arm 4d and the fifth arm 4e. It is shorter than the length.

In addition, about another structure, it is the same as that of Embodiment 1 mentioned above, and the detailed description is abbreviate | omitted.

In the car position detecting device configured as described above, when the car 1 is elevating the middle part of the hoistway at high speed, the first position detector 5a or the second position detector 5b is attached to the plate 2a for high-speed traveling. It is cut off by itself and becomes inoperative. The signal output at this time is input to the control apparatus, and it is detected that the car 1 has reached the operating point defined by the first position detector 5a or the second position detector 5b.

When the car 1 approaches the upper end layer at a low speed, the third position detector 5c, the fourth position detector 5d or the fifth position detector 5e is held by the plate 2b for low speed traveling. It is cut off and becomes inoperative. The signal output at this time is input to the control apparatus, and the car 1 has reached the operating point specified by the third position detector 5c, the fourth position detector 5d or the fifth position detector 5e. Is detected. The same applies to the lower termination layer.

In the car position detection device configured as described above, similarly to the first embodiment, the area occupied by the position detector and the plate within the horizontal cross section of the hoistway can be reduced to reduce the layout.

In addition, in addition to providing a low-speed traveling plate and a high-speed traveling plate whose dimensions along the lifting direction are different from those of the low-speed traveling plate, and on the trajectory on which the low-speed traveling plate passes when the car is elevated, By providing a low-speed driving position detector arranged along the way, and a high-speed driving position detector arranged along the trajectory through which the high-speed traveling plate passes when the car ascends, the position in the hoistway, in particular near the end and the middle In consideration of the lifting speed of another car, the accuracy of plate detection is improved in one position detector, and the occurrence of false detection in which plates are simultaneously detected in two or more adjacent position detectors is prevented. can do.

Embodiment 3.

3 and 4 are related to Embodiment 3 of the present invention, FIG. 3 is a diagram illustrating a signal converter of a car position detecting device, and FIG. 4 is a diagram illustrating an example of a conversion rule of a signal converter.

For example, in the conventional position detection method described in Patent Document 1, since the position detector is provided in the car instead of the operating point, the signal output when the car position is detected at the operating point is mounted on the car. Only the signal from the detector.

In contrast, in the first and second embodiments of the present invention, the position detector is provided by the set number of operating points, and the number of signals from the position detector increases as the number of operating points increases. In this case, since the number of signals is different, the control device used in the conventional position detection method cannot be used.

Therefore, Embodiment 3 described here includes a signal converter for converting a signal output from a position detector that defines each operating point into an equivalent to a signal used in a conventional position detection control device. It is to be provided between.

Fig. 3 shows this signal converter 6, in which signals from the position detectors defining the respective operating points, for example, are output to signals outputted from the position detectors to the control device in the prior art described in Patent Document 1, for example. The case where the signal is converted to the corresponding signal will be described.

That is, the signal converter 6 includes a first position detector 5a, a second position detector 5b, a third position detector 5c, a fourth position detector 5d and a fifth position detector 5e. A signal is received from a plurality of position detectors.

And in accordance with the conversion rule shown in FIG. 4, these signals are converted into the signal corresponding to the signal which a position detector outputs to a control apparatus in the prior art of patent document 1, and then output.

In the prior art described in Patent Document 1, six position detectors are mounted (8a to 8f) (for example, see FIG. 1, etc. of Patent Document 1).

When the position detectors are self-blocked by the plate and indicate a state in which they are inactive, the car 1 shows the first operating point as "1" (signal output) and the operation state as "0" (signal non-output). When passing, the position detectors 8a, 8c, and 8e in the prior art described in Patent Document 1 become inoperative and output a signal (to be "1"), and the position detectors 8b, 8d, and 8f operate. In the state, no signal is output (it becomes "0").

The code in this state is set to "101010" with the "1" or "0" states from the position detectors 8a to 8f arranged in order. In this case, the code is uniquely attached to each operating point so that a plurality of operating points can be distinguished from each other. Herein, the code is represented by a six-digit binary number.

Similarly, when the car 1 passes the second operating point, the position detectors 8a, 8c and 8f become inoperative to output a signal ("1"), and the position detectors 8b, 8d and 8e. Signal is not output ("0") in the operating state, and the code is "101001".

Hereinafter, the same applies to the operating points after the third time, and when the car 1 passes each operating point, the presence or absence and the code of the signal output by the position detectors 8a to 8f are shown in FIG. It is decided.

The signal converter 6 includes a plurality of position detectors including a first position detector 5a, a second position detector 5b, a third position detector 5c, a fourth position detector 5d and a fifth position detector 5e. The signal is input from the position detector, and the signal from the first position detector 5a is converted into the signal output from the position detectors 8a, 8c and 8e according to the conversion rule shown in FIG.

Similarly, the signal from the second position detector 5a is converted into the signal output from the position detectors 8a, 8c and 8f, and the signal from the third position detector 5a is converted to the position detectors 8a, 8d and 8e. To the signal output from

The same holds true for the fourth position detector 5d and later.

In the car position detection device configured as described above, in addition to being able to achieve the same effect as in the first or second embodiment, the control for detecting that the car has reached the operating point based on the signal output from the position detector. By outputting the signal which the predetermined conversion was performed by the signal converter to the signal output from the position detector, a car position detection is performed using the control apparatus used by the conventional position detection system with a different signal number. It is possible.

In particular, the predetermined conversion which this signal converter performs converts the signal output from the position detector into the signal which has been predetermined | prescribed so that operating points may be distinguished from each other, and converts this code, for example, into 6 digits. By using binary numbers, the number of signals from the signal converter to the control device is fixed to six even if the number of operating points, i.e., position detectors, is increased, and even if the number of operating points is seven or more, the control device using six signals can be used. have.

[Industrial Availability]

Industrial Applicability The present invention can be used for a car position detecting device for detecting the position of a car.

1 elevator car
2 plates
2a High speed plate
2b low speed plate
3 hoistway walls
4a first arm
4b second arm
4c third arm
4d fourth arm
4e fifth arm
5a first position detector
5b second position detector
5c third position detector
5d fourth position detector
5e Fifth Position Detector
6 signal converter

Claims (5)

In the car position detection device which detects the position of the elevating direction of the car which elevates the inside of the elevator hoistway,
A plate provided in the car;
A plurality of positions which are arranged along a trajectory through which the plate passes when the car moves up and down, defining operating points which are positions of a plurality of stages set along the lifting direction, and outputting a signal when the plates are engaged in a non-contact manner; With a detector,
The plate has a plate for low speed traveling, and a plate for high speed traveling whose dimension along the lifting direction is different from the plate for low speed traveling,
The plurality of position detectors include a low-speed traveling position detector disposed along a trajectory on which the low-speed traveling plate passes when the car moves up and down, and a trajectory of the high-speed traveling plate passing when the car moves up and down. Car position detection device characterized in that it has a position detector for high-speed driving arranged along the above. delete The method according to claim 1,
The position detector for low speed travel defines the operating point near the end of the hoistway,
And said position detector for high speed travel defines said operating point in the middle of said hoistway. The method according to any one of claims 1 to 3,
A control device for detecting that the car has reached the operating point based on the signal output from the position detector;
A car position detection device, further comprising a signal converter for outputting a signal obtained by performing a predetermined conversion to the signal output from the position detector to the control device. The method of claim 4,
The predetermined conversion performed by the signal converter is a conversion for converting a signal output from the position detector into a signal having a predetermined encoding so that the operating points can be distinguished from each other.

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