JP5360215B2 - Car position detector - Google Patents

Description

  The present invention relates to a car position detection device.

In the conventional car position detecting device, the following is known as a means for detecting the position of the elevator in the elevator direction at the end of the elevator hoistway.
In other words, a plurality of plates are discretely attached to each operating point at each of the operating points that are set in multiple stages along the ascending / descending direction, and the horizontal fixed positions of the plurality of plates are operated. By changing each point, each operating point is coded so as to be distinguishable from each other. A position detector that engages these plates in a non-contact manner and generates a signal indicating that the car has reached one of the operating points when engaged is provided on each of the plurality of plates for each operating point. A plurality of the baskets are mounted side by side in the horizontal direction so as to correspond (for example, see Patent Document 1).

Japanese Unexamined Patent Publication No. 05-338949

  However, in the conventional car position detecting device shown in Patent Document 1, in order to code each operating point so as to be distinguishable from each other, a plurality of plates with different horizontal fixed positions are attached to each operating point. ing. For this reason, it is necessary to attach a plurality of position detectors to the cage in a horizontal direction corresponding to the plurality of plates provided for each operating point. As a result, there is a problem that the ratio of the position detector to the horizontal layout in the hoistway becomes large, and the degree of freedom in layout becomes low. In particular, when the horizontal dimension of the car or the hoistway is small, the layout may become very difficult.

  The present invention has been made to solve such a problem, and can reduce the area occupied by the position detector in the horizontal section of the hoistway, and the horizontal dimension of the hoistway is small. It is possible to obtain a car position detecting device that can be easily laid out.

The car position detection device according to the present invention is a car position detection device that detects a position in the lift direction of a car that moves up and down in an elevator hoistway, and a plate provided on the car, and when the car moves up and down, A plurality of positions that are arranged along a trajectory through which the plate passes, define an operating point that is a plurality of positions set along the ascending / descending direction, and output a signal when the plate is engaged in a non-contact manner A detector, and the plate includes a plate for low-speed traveling, and a plate for high-speed traveling different in dimension along the ascending / descending direction from the plate for low-speed traveling, and a plurality of the positions The detector includes a low-speed traveling position detector arranged along a trajectory through which the low-speed traveling plate passes when the car moves up and down, and the high-speed traveling pre-set when the car moves up and down. Doo is configured to have a high-speed running time for position detectors positioned along a trajectory passing through.

  In the car position detecting device according to the present invention, the area occupied by the position detector in the horizontal section of the hoistway can be kept small, and even when the horizontal dimension of the hoistway is small, it can be easily laid out. There is an effect that it is possible.

It is a figure which shows the whole structure of the cage position detection apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the whole structure of the cage position detection apparatus which concerns on Embodiment 2 of this invention. It is a figure which shows the signal converter of the cage position detection apparatus which concerns on Embodiment 3 of this invention. It is a figure which shows the example of the conversion rule of the signal converter which concerns on Embodiment 3 of this invention.

Embodiment 1 FIG.
FIG. 1 relates to Embodiment 1 of the present invention and is a diagram showing the overall configuration of a car position detection device.
In the figure, reference numeral 1 denotes a car that can be raised and lowered in an elevator hoistway.
A plate 2 is attached to the car 1. The plate 2 has a substantially L shape in plan view, and is fixed so that a surface corresponding to one arm of the L shape is perpendicular to the paper surface.

  The first arm 4a, the second arm 4b, the third arm 4c, the fourth arm 4d, and the fifth arm 4e project in the horizontal direction from the bottom to the hoistway wall 3 near the upper terminal floor. It is installed. These arms are all of equal length.

The first arm 4a has a first position detector 5a, the second arm 4b has a second position detector 5b, the third arm 4c has a third position detector 5c, A fourth position detector 5d is attached to the fourth arm 4d, and a fifth position detector 5e is attached to the fifth arm 4e perpendicular to the paper surface.
These position detectors are substantially U-shaped in plan view. In addition, these position detectors are arranged along a trajectory through which the plate 2 passes when the car 1 moves up and down, and are operating points that are set in a plurality of stages along the direction in which the car 1 moves up and down. It prescribes.

That is, since the position detector provided near the upper terminal floor is described here, the first position detector 5a attached to the first arm 4a defines the upper first operating point. . And the 2nd position detector 5b attached to the 2nd arm 4b has prescribed | regulated the high-order 2nd operating point located only a predetermined distance above the high-order 1st operating point.
Similarly, the third position detector 5c attached to the third arm 4c with a predetermined interval is used as the fourth position detector attached to the fourth arm 4d. 5d defines the upper fourth operating point, and the fifth position detector 5e attached to the fifth arm 4e defines the upper fifth operating point.

Therefore, in this way, each operating point is defined by one position detector and distinguished from each other. In other words, as many position detectors as the number of operating points are provided.
A lower position detector is provided on the hoistway side near the lower terminal floor. The lower position detector is the same as the upper position detector described above except that its fixed position is different, and 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 normally in an operating state. Then, when the plate 2 of the car 1 is loosely inserted into the U-shaped recessed portion, that is, when engaged in a non-contact manner, it is magnetically cut off and becomes inoperative, and a signal is output.

In the car position detecting apparatus configured as described above, when the car 1 rises and approaches from the intermediate floor to the upper terminal floor, and the plate 2 of the car 1 reaches the upper first operating point, the first position detector 5a is magnetically blocked by the plate 2 and becomes inoperable. A signal output at this time is input to a control device (not shown), and it is detected that the car 1 has reached the upper first operating point.
When the further raised car 1 reaches the upper second operating point, the second position detector 5b is magnetically shut off by the plate 2 and becomes inoperative, and the car 1 reaches the upper second operating point in the control device. It is detected.

Similarly, when the car 1 further rises and reaches the upper third operating point, the third position detector 5c becomes higher, and when the upper fourth operating point is reached, the fourth position detector 5d becomes the upper fifth operating point. The fifth position detector 5e is magnetically interrupted by the plates 2 to become inoperable, and the control device detects that the car 1 has reached the respective operating point.
Here, at the time of this operation, each position detector detects the position of the car 1 by detecting whether or not the plate 2 is in the recessed portion thereof, in a non-contact manner. Although this non-contact detection is performed by magnetic action here, it may be performed by other methods such as photoelectric action.

  The car position detection by the lower position detector when the car 1 descends and approaches from the intermediate floor to the lower terminal floor is the same as the car position detection by the upper position detector described above. Omitted.

  In the car position detecting apparatus configured as described above, a plate is provided on the car, not on the hoistway side, and a position detector that outputs a signal when the plate engages in a non-contact manner is provided when the car moves up and down. The position detector and the plate in the horizontal section of the hoistway are defined along the trajectory that passes through and by defining operating points that are positions of a plurality of stages set along the hoisting direction by this position detector. Can occupy a small area of one position detector and one plate, improving layout and allowing easy layout even when the horizontal dimension of the hoistway is small. It is.

Embodiment 2. FIG.
Figure 2 relates to a second embodiment of the invention, showing the overall structure of the car position detecting device.
In the second embodiment described here, when the car position is also detected in the middle part of the hoistway, the car is moved faster in the vicinity of the upper and lower ends of the hoistway and in the middle part of the hoistway. Two types of plates for traveling and for traveling at low speed are provided.

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, one calculation is performed in consideration of the calculation cycle of the microcomputer and S / W. A plate having a predetermined length or more is required so that the plate passage time with respect to the position detector is at least the calculation cycle or more.
In addition, in order to prevent false detection and improve detection accuracy, when corresponding to multiple detections in which multiple detection is performed when a plate passes a single position detector, the corresponding plate length is Necessary.

  On the other hand, when the plate length is increased, this time, the arrangement interval of the position detectors is shortened with respect to the plate length, and the plates are simultaneously positioned in the recesses of two or more adjacent position detectors, There is a possibility of false detection.

  Here, in general, an elevator travels at a low speed near the final floor and travels at a maximum speed near the intermediate floor. Therefore, in the second embodiment, two kinds of plates for high speed running and low speed running are attached to the car 1, and when the car 1 moves up and down the position detector in the middle part of the hoistway, The position detector in the vicinity of the terminal floor is arranged along the trajectory through which the plate for low-speed travel passes when the car 1 moves up and down.

  More specifically, in FIG. 2, two types of plates, a plate 2a for high speed running and a plate 2b for low speed running, which are substantially L-shaped in plan view, are attached to the car 1. The plate 2a for high speed travel has a plate length dimension along the ascending / descending direction of the car 1 longer than that of the plate 2b for low speed travel, and conversely, the plate of the plate 2b for low speed travel The length dimension is shorter than the plate length dimension of the plate 2a for high speed running.

The first arm 4a and the second arm 4b are projected in the horizontal direction in order from the bottom on the hoistway wall 3 in the middle of the hoistway, and the first position detection is performed on the first arm 4a. The second position detector 5b is attached to the second arm 4b perpendicularly to the paper surface.
The first position detector 5a and the second position detector 5b are position detectors for high-speed travel, and along a trajectory through which the plate 2a for high-speed travel passes when the car 1 moves up and down. Has been placed.

Further, on the hoistway wall 3 near the upper terminal floor, a third arm 4c, a fourth arm 4d and a fifth arm 4e are projected in the horizontal direction from the bottom, and the third arm 4c The third position detector 5c, the fourth arm 4d, the fourth position detector 5d, and the fifth arm 4e, the fifth position detector 5e are perpendicular to the paper surface. It is attached.
The third position detector 5c, the fourth position detector 5d, and the fifth position detector 5e are low-speed travel position detectors, and when the car 1 moves up and down, the low-speed travel plate 2b. It is arranged along the trajectory through which.

Here, since the high-speed travel plate 2a is attached to the hoistway wall 3 side when viewed from the low-speed travel plate 2b, the trajectory through which the high-speed travel plate 2a passes when the car 1 moves up and down is It is closer to the hoistway wall 3 side than the trajectory through which the low speed travel plate 2b passes.
Therefore, the first position detector 5a and the second position detector 5b corresponding to the high speed travel plate 2a are the third position detector 5c and the fourth position detection corresponding to the low speed travel plate 2b. The lengths of the first arm 4a and the second arm 4b are the third arm 4c and the fourth arm 4d, respectively, because they are arranged closer to the hoistway wall 3 than the device 5d and the fifth position detector 5e. And it is shorter than the length of the fifth arm 4e.
Other configurations are the same as those of the first embodiment described above, and detailed description thereof is omitted.

  In the car position detecting device configured as described above, when the car 1 is moving up and down the hoistway middle part at a high speed, the first position detector 5a and the second position detector 5b are plates for high speed running. It is magnetically shut off by 2a and becomes inoperable. The signal output at this time is input to the control device, and it is detected that the car 1 has reached the operating point defined by the first position detector 5a and the second position detector 5b.

  When the car 1 approaches the upper terminal floor at a low speed, the third position detector 5c, the fourth position detector 5d, and the fifth position detector 5e are magnetically blocked by the low-speed traveling plate 2b. It becomes inoperable. The signal output at this time is input to the control device, and the car 1 reaches the operating point defined by the third position detector 5c, the fourth position detector 5d, and the fifth position detector 5e. It is detected. The same applies to the lower terminal floor.

  In the car position detection apparatus configured as described above, the area occupied by the position detector and the plate in the horizontal section of the hoistway can be kept small, and the layout can be improved as in the first embodiment.

  In addition, in addition to this, there are provided a plate for low-speed traveling and a plate for high-speed traveling that is different from the plate for low-speed traveling in the dimension along the ascending / descending direction. Position detector for low-speed running arranged along the trajectory through which the plate for driving passes and position detection for high-speed running arranged along the trajectory through which the plate for high-speed running passes when the car moves up and down To improve the plate detection reliability in one position detector in consideration of the elevator lifting speed which varies depending on the position in the hoistway, particularly the vicinity of the end and the middle part. It is possible to prevent the occurrence of erroneous detection in which the plates are simultaneously detected in the adjacent position detectors.

Embodiment 3 FIG.
3 and 4 relate to Embodiment 3 of the present invention. FIG. 3 is a diagram showing a signal converter of a car position detecting device, and FIG. 4 is a diagram showing an example of a conversion rule of the signal converter. .
For example, in the conventional position detection method as described in Patent Document 1, since the position detector is provided not in the operating point but in the car, a signal output when detecting the car position at the operating point is attached to the car. Only the signal from the selected position detector.

On the other hand, in the first and second embodiments according to the present invention, position detectors are provided as many as the set number of operating points, and the number of signals from the position detector increases as the number of operating points increases. It is possible to do. In this case, since the number of signals is different, the control device used in the conventional position detection method cannot be used.
Therefore, the third embodiment described here is a signal for converting a signal output from a position detector that defines each operating point into a signal corresponding to a signal used in a conventional position detection type control device. A converter is provided between the position detector and the control device.

FIG. 3 shows the signal converter 6. Here, the signal from the position detector defined by each operating point is transferred from the position detector in the prior art described in Patent Document 1 to the control device. A case where the signal is converted into a signal corresponding to the output signal will be described.
That is, the signal converter 6 includes a plurality of first position detectors 5a, second position detectors 5b, third position detectors 5c, fourth position detectors 5d, and fifth position detectors 5e. The signal input from the position detector is received.
Then, these signals are converted into signals corresponding to signals output from the position detector in the prior art described in Patent Document 1 to the control device in accordance with the conversion rules shown in FIG.

Six position detectors 8a to 8f in the prior art described in Patent Document 1 are attached (see, for example, FIG. 1 of Patent Document 1).
If these position detectors are magnetically cut off by the plate and are in an inoperative state “1” (signal output), and the operating state is represented by “0” (no signal output), the car 1 is in the first operation. When the point is passed, in the prior art described in Patent Document 1, the position detectors 8a, 8c and 8e are inoperative and output a signal (becomes "1"), and the position detectors 8b, 8d and 8f are In the operating state, no signal is output (becomes “0”).

  The code in this state is “101010” by sequentially arranging the states “1” or “0” from the position detectors 8a to 8f. Here, the code is uniquely assigned to each operating point so that a plurality of operating points can be distinguished from each other, and is expressed by a 6-digit binary number here.

Similarly, when the car 1 passes the second operating point, the position detectors 8a, 8c, and 8f are deactivated and output a signal ("1"), and the position detectors 8b, 8d, and 8e are in the operating state and signal is output. Is not output (“0”), and the code is “101001”.
Similarly, the presence and code of signals output from the position detectors 8a to 8f when the car 1 passes through each operating point are determined as shown in FIG. 4 at the third and subsequent operating points.

The signal converter 6 includes a plurality of positions 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. In response to the input of the signal from the detector, the signal from the first position detector 5a is converted into the signal output from the position detectors 8a, 8c and 8e, for example, according to the conversion rule shown in FIG.
Similarly, the second position detector 5 signals the position detector 8a from b, 8c and converts the signal output from 8f, a third position detector 5 signals the position detector 8a from c, 8d and It converts into the signal output from 8e.
The same applies to the fourth position detector 5d and thereafter.

  In the car position detecting device configured as described above, the car can be obtained based on the signal output from the position detector, in addition to the effects similar to those of the first or second embodiment. Conventional position detection system with different number of signals by outputting a signal converted from the signal output from the position detector by the signal converter to the control device that detects that the operating point has been reached. The car position can be detected by using the control device used in the above.

  In particular, the predetermined conversion performed by the signal converter is a conversion that converts the signal output from the position detector into a signal that has been encoded so that the operating points can be distinguished from each other. For example, by expressing the code as a binary number of 6 digits, the number of signals from the signal converter to the control device is fixed to 6 even if the number of operating points, that is, the number of position detectors increases, and the number of operating points is 7 or more. Even so, it is possible to use the control device that used the existing six signals.

  The present invention can be used in a car position detection device that detects the position of an elevator car.

DESCRIPTION OF SYMBOLS 1 Car 2 Plate 2a High speed travel plate 2b Low speed travel plate 3 Hoistway wall 4a 1st arm 4b 2nd arm 4c 3rd arm 4d 4th arm 4e 5th arm 5a 1st position Detector 5b Second position detector 5c Third position detector 5d Fourth position detector 5e Fifth position detector 6 Signal converter

Claims (4)

In the car position detection device that detects the position of the car that moves up and down in the elevator hoistway,
A plate provided in the basket;
It is arranged along a trajectory through which the plate passes when the car moves up and down, defines an operating point that is a multi-stage position set along the lifting direction, and the plate engages in a non-contact manner. And a plurality of position detectors that output signals ,
The plate has a plate for low-speed traveling, and a plate for high-speed traveling different in dimension along the lifting direction from the plate for low-speed traveling,
The plurality of position detectors include a low speed travel position detector disposed along a trajectory through which the low speed travel plate passes when the car moves up and down, and the high speed when the car moves up and down. A car position detecting device, comprising: a high speed travel position detector disposed along a trajectory through which the travel plate passes . The low speed travel position detector defines the operating point near the end of the hoistway,
The high-speed traveling at a position detector, the car position detecting device according to claim 1, characterized in that defining the operating point of the intermediate portion of the hoistway. A control device for detecting that the car has reached the operating point based on a signal output from the position detector;
The signal subjected to predetermined conversion on the signal output from the position detector, claim 1 or claim 2, characterized in that the signal converter which outputs to the control device, further comprising The car position detection device described in 1. The predetermined conversion performed by the signal converter is a conversion that converts a signal output from the position detector into a signal that has been encoded so that the operating points can be distinguished from each other. The car position detection device according to claim 3 .

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