JPH1171067A - Running guide device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a running guide device for an elevator whereby a car of an elevator can be smoothly and stably guide supported. SOLUTION: In a controller 8, normally based on either one detection signal of two gap detectors 6a, 6b, so as to fix a gap, magnetic force of an electromagnet 51 is controlled. In the case of one detection signal rapidly changing, it is switched to a detection signal from the other gap detector, so as to fix the gap, magnetic force of the electromagnet 51 is controlled. In this way, even in the vicinity of a step difference in a joint or the like of a guide rail 4, the magnetic force can be smoothly controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator traveling guide device for supporting a car along a guide rail of the car.

[0002]

2. Description of the Related Art In general, an elevator travel guide device is provided on a car side, and functions so that the car can smoothly move up and down along a guide rail (guide rail) erected in a hoistway. It is. As shown in FIG. 13, there is an elevator travel guide device that guides a car in a non-contact manner with respect to a guide rail by using a magnetic force.

FIG. 13 is a view as seen from the entrance of the car 1. The car 1 is suspended by a rope 2 and rises and descends. A guide rail 4 is provided upright in a hoistway 3 along the left and right side surfaces of the car 1. Along the guide rails 4, a total of four sets of elevator travel guide devices 5 are mounted on each of the upper and lower portions of the car 1, two sets in total.

Each traveling guide device 5 includes a pair of electromagnets 51 both of which have the guide rail 4 as a part of a magnetic path,
Is fixed to the car 1 by screwing. The electromagnet 51 is a pair of coils 51a.
And a magnetic body portion 51b having a three-shaped iron core in which the pair of coils 51a are incorporated.
The magnetic poles at both ends of 1b are the car 1 on the guide rail 4.
It is arranged so as to face three surfaces protruding to the side.

The traveling guide device 5 is a non-contact magnetic guide using an electromagnet 51, and is controlled such that a gap g between the traveling guide device 5 and the guide rail 4 is always substantially constant by magnetic force. It is configured as follows.

[0006]

However, in such a conventional elevator traveling guide device, when the car 1 passes near a step such as a joint of the guide rail 4, the electromagnet 51 and the guide rail 4 The gap g between the traveling guide device 5 and the guide rail 4 may not be able to be smoothly controlled because the gap g between the traveling guide device 5 and the guide rail 4 becomes substantially constant. That is, since the gap used for control changes suddenly, the position of the car may move suddenly and the ride comfort may be deteriorated in accordance with the control for keeping the gap constant.

An object of the present invention is to provide an elevator traveling guide device capable of smoothly and stably guiding and supporting an elevator car.

[0008]

According to a first aspect of the present invention, there is provided an elevator traveling guide device which is disposed at a predetermined interval in a direction in which a car is raised and lowered, and is provided between a magnetic body of an electromagnet and a guide rail. The magnetic force of the electromagnet is controlled so that the air gap is constant based on the two air gap detectors that detect the air gap and the detection signal of one of the two air gap detectors, and one of the detection signals suddenly changes. And a controller for controlling the magnetic force of the electromagnet so that the gap becomes constant by switching to the detection signal from the other gap detector.

In the elevator traveling guide device according to the first aspect of the present invention, the controller normally controls the electromagnet so that the gap is constant based on a detection signal of one of the two gap detectors. Control the magnetic force. Then, when one of the detection signals changes abruptly, it switches to the detection signal from the other air gap detector and controls the magnetic force of the electromagnet so that the air gap becomes constant. As a result, smooth control can be performed even near a step such as a joint of the guide rails.

The elevator traveling guide device according to the second aspect of the present invention is disposed at predetermined intervals in the vertical direction of the car and detects an air gap between the magnetic member of the electromagnet and the guide rail. And a controller for controlling the magnetic force of the electromagnet so that the air gap is constant based on the median value of the detection signals of the three air gap detectors.

In the traveling guide device for an elevator according to the second aspect of the present invention, the controller controls the magnetic force of the electromagnet based on the median value of the detection signals of the three gap detectors so that the gap is constant. Control. Therefore, even if there is a detection signal for detecting the joint of the guide rail, the detection signal is not used for controlling the air gap, so that the car is not shaken.

According to a third aspect of the present invention, there is provided an elevator travel guide device according to the third aspect, wherein the controller replaces a median value among the detection signals of the three gap detectors. The magnetic force of the electromagnet is controlled so that the air gap is constant based on the average value of the detection signals of the three air gap detectors.

In the elevator traveling guide device according to the third aspect of the present invention, instead of the operation of the third aspect of the present invention, the controller has a constant gap based on the average value of the detection signals of the three gap detectors. The magnetic force of the electromagnet is controlled so that Therefore, even if there is a detection signal for detecting a joint between the guide rails, the influence can be reduced, and the sway applied to the car can be suppressed.

According to a fourth aspect of the present invention, there is provided an elevator traveling guide device which is disposed at a predetermined interval in the vertical direction of a car and detects a gap between a magnetic member of an electromagnet and a guide rail. If the amount of change in the detection signal of the air gap detector is equal to or less than a predetermined threshold value, it is based on a signal obtained by adding the amount of change to the previous detection signal. And a controller that controls the magnetic force of the electromagnet based on a signal obtained by adding the threshold value to the detection signal.

According to a fourth aspect of the present invention, when the change amount of the detection signal of the air gap detector is equal to or less than a predetermined threshold value, the controller adds the change amount to the previous detection signal. The magnetic force of the electromagnet is controlled based on the added signal so that the air gap is constant. On the other hand, when the variation exceeds the threshold value, the magnetic force of the electromagnet is controlled based on a signal obtained by adding the threshold value to the previous detection signal so that the air gap becomes constant. Therefore, even if there is a detection signal for detecting the joint of the guide rail, the detection signal is suppressed by the threshold value, the effect of which can be reduced, and the sway applied to the car can be suppressed.

According to a fifth aspect of the present invention, there is provided an elevator travel guide device which is provided at a predetermined interval in the vertical direction of a car to detect a gap between a magnetic body of an electromagnet and a guide rail. , A low-pass filter that receives a detection signal from the gap detector and removes a signal having a frequency equal to or higher than a predetermined frequency, and a controller that controls the magnetic force of the electromagnet so that the gap is constant based on the signal from the low-pass filter. It is provided with.

According to a fifth aspect of the present invention, a signal having a frequency equal to or higher than a predetermined frequency is removed by a low-pass filter from the detection signal of the air gap detector, and the controller makes the air gap constant based on the signal. The magnetic force of the electromagnet is controlled so as to be as follows. Therefore, even if there is a detection signal for detecting the joint of the guide rail, the influence can be reduced,
Sway given to the car can be suppressed.

According to a sixth aspect of the present invention, there is provided an elevator traveling guide device which is disposed at a predetermined interval in the vertical direction of a car and detects a gap between a magnetic portion of an electromagnet and a guide rail. Detector, a step detector for detecting a step on the guide rail, and an electromagnet so that when the step detector detects a step on the guide rail, the gap is constant based on the previous detection signal detected by the gap detector. And a controller for controlling the magnetic force.

In the traveling guide device for an elevator according to the present invention, when the step detector detects a step on the guide rail, the controller detects the gap based on the previous detection signal detected by the gap detector. The magnetic force of the electromagnet is controlled so as to be constant. Therefore, the detection signal for detecting the seam of the guide rail is not used for controlling the air gap, so that the car is not shaken.

[0020]

Embodiments of the present invention will be described below. FIG. 1 is an explanatory diagram of an elevator traveling guide device according to a first embodiment of the present invention. FIG. 1A is a partial side view, and FIG. 1B is a top view thereof.

The traveling guide device 5 is disposed substantially perpendicular to the longitudinal direction of the guide rail 4. The electromagnet 51 of the traveling guide device 5 is configured such that a coil 51a is attached to a magnetic body portion 51b, and the magnetic body portion 51b is integrally formed in a three-character cross section as shown in FIG. I have.

At the end of the magnetic portion 51b of the electromagnet 51, a gap detector 6 for detecting a gap g between the magnetic portion b and the guide rail 4 is provided. The gap detector 6 is shown in FIG.
As shown in FIG. 1 (b), the guide rail 4 is provided on each of three surfaces protruding from the car 1, and as shown in FIG. A pair of two gap detectors 6a and 6b are provided. That is, a total of six gap detectors 6 are provided. The electromagnet 51 is fixed to the car 1 by a fixture 52.

Further, a controller 8 for controlling the gap g detected by the gap detector 6 to be constant is provided, and the gap g is made constant by adjusting the magnetic force generated by the coil 51a. The controller 8 always controls the magnetic force of the electromagnet 51 based on the detection signal of one of the two gap detectors 6a and 6b so that the gap g is constant, and one of the detection signals Is rapidly changed, control is performed by switching to the detection signal from the other air gap detector 6.

That is, in the first embodiment, since the pair of upper and lower gap detectors 6a and 6b are arranged at a predetermined interval in the vertical direction, the pair of upper and lower gap detectors 6a and 6b are arranged.
a, 6b, for example, the air gap detector 6a
When a step such as a seam is detected, another air gap detector 6b does not detect the step. Therefore, the detection signal of the joint of the guide rail 4 is not used for controlling the gap g.

FIG. 2 is a characteristic diagram showing a detection signal from the gap detector 6 and a control signal used for controlling the gap in the first embodiment. FIG. 2A shows a detection signal from a gap detector 6a installed above the electromagnet 51, and FIG.
(B) shows a detection signal from the detector 6b installed below the electromagnet 51. FIG. 2C shows the electromagnet 5
3 shows a control signal used for controlling a gap g between the first magnetic body 51 b and the guide rail 4.

That is, a signal from the gap detector 6a provided above the electromagnet 51 is transmitted to the electromagnet 51 and the guide rail 4
When the traveling guide device 5 passes near a step such as a seam of the guide rail 4 when the car 1 is rising, the gap installed above the electromagnet 51 is used. The signal from the detector 6a changes rapidly as shown in FIG. At this time, the gap detector 6b installed below the electromagnet 51 does not detect the step of the guide rail 4 as shown in FIG.

Therefore, when the signal from the gap detector 6a provided above the electromagnet 51 changes abruptly, a signal used for controlling the gap g between the electromagnet 51 and the guide rail 4 is provided below the electromagnet 51. The signal is switched to the signal from the air gap detector 6b. As a result, as shown in FIG.
The signal used to control the gap between the electromagnet 51 and the guide rail 4 does not change rapidly.

Therefore, the guide support of the elevator car 1 can be performed smoothly and stably. When the gap detector 6b installed below the electromagnet 51 subsequently detects a step such as a seam of the guide rail 4, a signal from the gap detector 6a installed above the electromagnet 51 is similarly transmitted to the electromagnet 51. This is used for controlling the gap between the guide rail 4 and the guide rail 4.

In the above description, the case where the car 1 has been raised has been described, but the gap g between the electromagnet 51 and the guide rail 4 is similarly controlled when the car 1 is being lowered. The guide support of the elevator car 1 can be performed smoothly and stably.

Next, a second embodiment of the present invention will be described. FIG. 3 is an explanatory view of an elevator traveling guide device according to a second embodiment of the present invention. This second embodiment is different from the first embodiment shown in FIG. 1 in that three gap detectors 6a, 6b, and 6c are provided, and the controller 8 includes three gap detectors 6a, The magnetic force of the electromagnet 51 is controlled based on the median value of the detection signals 6b and 6c so that the gap g becomes constant.

In FIG. 3, the traveling guide device 5 is disposed substantially perpendicular to the longitudinal direction of the guide rail 4. The electromagnet 51 of the travel guide device 5 includes a coil 51
The magnetic member 51b is integrally formed in a three-character cross section as shown in FIG. 3 (b).

At the end of the magnetic part 51b of the electromagnet 51, a gap detector 6 for detecting a gap g between the magnetic part b and the guide rail 4 is provided. The gap detector 6 is shown in FIG.
As shown in FIG. 3 (b), the guide rail 4 is provided on each of three surfaces protruding from the car 1, and as shown in FIG. Are provided with three gap detectors 6a, 6b, 6c.
That is, a total of nine gap detectors 6 are provided. The electromagnet 51 is fixed to the car 1 by a fixture 52.

Further, a controller 8 for controlling the gap g detected by the gap detector 6 to be constant is provided, and the gap g is made constant by adjusting the magnetic force generated in the coil 51a. The controller 8 includes three gap detectors 6a,
The gap g based on the median of the detection signals of 6b and 6c
Is controlled so as to be constant.

That is, in the second embodiment, three gap detectors 6a, 6b, and 6c are provided on each of the three surfaces of the guide rail 4 protruding from the car 1 at predetermined intervals in the vertical direction. Therefore, when one of the three gap detectors 6a, 6b, 6c, for example, the gap detector 6a detects a step such as a joint of the guide rail 4,
The other gap detectors 6b and 6c do not detect a step. Then, the median of these three detection signals is selected to determine the gap g.
Therefore, the detection signal at the joint of the guide rail 4 is not used for controlling the gap g.

FIG. 4 is a characteristic diagram showing a detection signal from the gap detector 6 and a control signal used for controlling the gap in the second embodiment. FIG. 4A shows a detection signal from the air gap detector 6a disposed above the electromagnet 51, and FIG.
(B) shows a gap detector 6 installed in the middle of the electromagnet 51.
FIG. 4C shows a detection signal from the gap detector 6c provided below the electromagnet 51. FIG.
FIG. 4D shows a control signal used for controlling a gap g between the magnetic body 51 b of the electromagnet 51 and the guide rail 4.

In the second embodiment, the controller 8
3 on each of the three surfaces protruding from the car 1 of the guide rail 4
Of the detection signals from the gap detectors 6a, 6b, 6c arranged one by one, the detection signal whose value is at the center is
It is used for controlling the gap between the guide rail 4. That is, when the traveling guide device 5 passes near a step such as a seam of the guide rail 4 when the car 1 is rising, the detection signal from the gap detector 6a installed above the electromagnet 51 is: It changes abruptly as shown in FIG. At this time, the gap detector 6b installed in the middle of the electromagnet 51 and the gap detector 6c installed below the electromagnet 51 are:
As shown in FIGS. 4B and 4C, the guide rail 4
Is not detected.

In this case, among the detection signals from the air gap detectors 6a, 6b, 6c, the detection signal having the center value is a detection signal in which the seam of the guide rail 4 is not detected. Therefore, the detection signal used for controlling the gap between the electromagnet 51 and the guide rail 4 is a detection signal whose value does not change rapidly. That is, the signal from the gap detector 6a provided above the electromagnet 51 whose value has changed rapidly is not used for controlling the gap between the electromagnet 51 and the guide rail 4. Therefore,
As shown in FIG. 4D, the signal used to control the gap between the electromagnet 51 and the guide rail 4 does not change rapidly,
The guide support of the elevator can be performed smoothly and stably.

Thereafter, when the gap detector 6b installed in the middle part of the electromagnet 51 or the gap detector 6b installed below the electromagnet 51 detects a step such as a joint of the guide rail 4, Similarly, the electromagnet 51 and the guide rail 4
The signal used for controlling the gap between the elevator and the vehicle can be smoothly and stably supported without guiding the signal suddenly.

In the above description, the case where the car is ascending has been described. However, similarly, when the car 1 is descending, the gap between the electromagnet 51 and the guide rail 4 can be controlled. The guide support of the elevator car 1 can be performed smoothly and stably.

Next, a third embodiment of the present invention will be described. FIG. 5 is a characteristic diagram showing a detection signal from the gap detector 6 and a control signal used for controlling the gap according to the third embodiment of the present invention. This third embodiment is shown in FIG.
And the second embodiment shown in FIG.
Is replaced with the three gap detectors 6a, 6b, 6 instead of the median value of the detection signals of the three gap detectors 6a, 6b, 6c.
The magnetic force of the electromagnet 51 is controlled so that the gap g is constant based on the average value of the detection signal c.

FIG. 5A shows a detection signal from a gap detector 6a provided above the electromagnet 51, and FIG.
(B) shows a gap detector 6 installed in the middle of the electromagnet 51.
FIG. 5C shows a detection signal from the gap detector 6 c provided below the electromagnet 51. FIG. 5D shows a control signal used for controlling a gap between the electromagnet 51 and the guide rail 4.

In the third embodiment, as in the second embodiment, three gap detectors 6a, 6b and 6c are provided on each of three surfaces of the guide rail 4 protruding from the car 1 on three sides.
Are arranged at predetermined intervals in the ascending and descending directions, and for controlling the gap between the electromagnet 51 and the guide rail 4, the average value of the detection signals from the three gap detectors 6a, 6b, and 6c is used. Use signals.

When the car 1 is raised and the traveling guide device 5 passes near a step such as a joint of the guide rails 4, it is first installed above the electromagnet 51 as shown in FIG. The gap detector 6a detects a step such as a seam of the guide rail 4. On the other hand, FIG.
As shown in (c), the other gap detectors 6b and 6c do not detect a step, and the signal used for controlling the gap between the electromagnet 51 and the guide rail 4 is an average value of these signals. The smoothing is performed as shown in FIG. Therefore, the guide support of the elevator can be performed smoothly and stably.

Thereafter, the same applies to the case where the gap detector 6b installed in the middle of the electromagnet 51 or the gap detector 6c installed below the electromagnet 51 detects a step such as a joint of the guide rail 4. In addition, the signal used for controlling the gap between the electromagnet 51 and the guide rail 4 does not change rapidly,
The guide support of the elevator can be performed smoothly and stably.

In the above description, the case where the car 1 has been raised has been described. However, even when the car 1 is being lowered, the gap between the electromagnet 51 and the guide rail 4 can be similarly controlled. It is possible to smoothly and stably guide the elevator car.

Next, a fourth embodiment of the present invention will be described. FIG. 6 is an explanatory view of an elevator traveling guide device according to a fourth embodiment of the present invention. FIG. 6A is a partial side view, and FIG. 6B is a top view thereof. This fourth embodiment is different from the first embodiment shown in FIG. 1 in that one air gap detector 6 is provided for each of the three surfaces of the guide rail 4 protruding from the car 1 and control is performed. The device 8 is a gap detector 6
The gap between the electromagnet 51 and the guide rail 4 is controlled based on the amount of change in the detection signal.

In FIG. 6, the traveling guide device 5 is disposed substantially perpendicular to the longitudinal direction of the guide rail 4. The electromagnet 51 of the travel guide device 5 includes a coil 51
The magnetic member 51b is integrally formed in a three-character cross section as shown in FIG. 6B.

At the end of the magnetic part 51b of the electromagnet 51, a gap detector 6 for detecting a gap g between the magnetic part b and the guide rail 4 is provided. One air gap detector 6 is provided for each of the three surfaces of the guide rail 4 protruding from the car 1. The electromagnet 51 is fixed to the car 1 by a fixture 52.

Further, a controller 8 for controlling the gap g detected by the gap detector 6 to be constant is provided, and the gap g is made constant by adjusting the magnetic force generated by the coil 51a. When the change amount of the detection signal of the gap detector 6 is equal to or smaller than a predetermined threshold, the controller 8 controls the gap g based on a signal obtained by adding the change amount to the previous detection signal. When the amount of change exceeds the threshold value, the air gap is controlled based on a signal obtained by adding the threshold value to the previous detection signal.

FIG. 7 is a characteristic diagram showing a detection signal from the gap detector 6 and a control signal used for controlling the gap in the fourth embodiment. 7A shows a detection signal from the gap detector 6, FIG. 7B shows a change amount of the detection signal from the gap detector 6, and FIG. 7C shows a control of a gap between the electromagnet 51 and the guide rail 4. 3 shows a control signal used for the control.

When the traveling guide device 5 travels on a step such as a joint of the guide rail 4 while the car 1 is moving up, the gap detector 6 detects the step, and the gap detector 6 detects the step.
The detection signal changes rapidly as shown in FIG. At this time, the controller 8 always monitors the amount of change in the detection signal from the gap detector 6. The amount of change in the detection signal is determined by comparing the previous detection signal with the current detection signal.
A signal obtained by adding a change amount to the previous detection signal one step before is used for controlling the gap between 1 and the guide rail 4.

In this case, when the amount of change exceeds a predetermined threshold as shown in FIG. 7B, the amount of change added to the previous detection signal is set to the predetermined threshold. That is,
When the amount of change exceeds a threshold value, the threshold value is set as a limit value. Therefore, as shown in FIG.
The control signal used to control the gap between the guide rail 4 and the guide rail 4 can be smoothly and stably supported by the guide without sudden change.

Next, a fifth embodiment of the present invention will be described. FIG. 8 is an explanatory view of an elevator traveling guide device according to a fifth embodiment of the present invention. In the fifth embodiment, one gap detector 6 is provided for each of three surfaces of the guide rail 4 protruding from the car 1, and the gap detector 6
The controller 8 removes a signal having a frequency equal to or higher than a predetermined frequency through a low-pass filter from the detection signal, and controls the magnetic force of the electromagnet so that the air gap is constant based on the signal from the low-pass filter. It was done.

Referring to FIG. 8, the detection signal of the air gap detector 6 installed in the vicinity of the electromagnet 51 is filtered through a low-pass filter 7 to remove a signal of a predetermined frequency or higher. The removed signal is input to the controller 8 to control the gap between the electromagnet 51 and the guide rail 4.

FIG. 9 is a characteristic diagram showing a detection signal obtained from the gap detector 6 and a control signal used for controlling the gap in the fifth embodiment. FIG. 9A shows a state of a detection signal obtained from the gap detector 6, and FIG. 9B shows a state of a detection signal obtained from the gap detector 6 via the low-pass filter 7.

When the traveling guide device 5 passes near a step such as a joint of the guide rail 4 while the car 1 is moving up and down, the gap detector 6 detects this step. This detection signal changes abruptly as shown in FIG. On the other hand, by passing the detection signal from the gap detector 6 through the low-pass filter 7, the high-frequency component of the detection signal from the gap detector 6 is removed, and as shown in FIG. Be relaxed. Therefore, by guiding the detection signal from the air gap detector 6 through the low-pass filter 7, it is possible to smoothly and stably guide and support the elevator.

Next, a sixth embodiment of the present invention will be described. FIG. 10 is an explanatory view of an elevator traveling guide device according to a sixth embodiment of the present invention. In the sixth embodiment, one gap detector 6 is provided for each of the three surfaces of the guide rail 4 protruding from the car 1, and in addition to the gap detector 6, a step difference of the guide rail 4 is detected. Step detector 9
When the level difference detector 9 detects a level difference of the guide rail 4, the controller 8 controls the gap based on the previous detection signal detected by the gap detector 6.

In FIG. 10, a step detector 9 for detecting a step such as a joint of the guide rail 4 is provided near the gap detector 6. The step detector 9 is constituted by an optical detector, and a circuit breaker 10 is mounted near a joint of the guide rail 4. This circuit breaker 10
When the traveling guide device 5 passes near the step of the guide rail 4, the step detector 9 is mounted at that position, and when the step detector 9 comes to the position of the circuit breaker 10, the circuit breaker By detecting 10, the step of the guide rail 4 is detected.

FIG. 11 is a characteristic diagram showing a detection signal from the gap detector 6 and a control signal used for controlling the gap in the sixth embodiment. 11A shows a detection signal from a gap detector 6 for detecting a gap between the electromagnet 51 and the guide rail 4, and FIG. 11B shows a detection signal from a gap detector 9 for detecting a step such as a joint of the guide rail 4. Detection signal, FIG.
(C) shows a control signal used for controlling a gap between the electromagnet 51 and the guide rail 4.

If the traveling guide device 5 passes near a step such as a joint of the guide rail 4 when the car 1 is ascending, the gap detector 6 detects the step of the guide rail 4, As shown in FIG. 11A, the detection signal changes rapidly. On the other hand, the level difference detector 9 also detects the level difference of the guide rail 4 and outputs a detection signal as shown in FIG. That is, when the step detector 9 comes to the position of the circuit breaker 10 attached to the guide rail 4, FIG.
As shown in (b), the optical signal from the step detector 9 which is an optical detector is cut off, and the step detector 9 detects a step such as a joint of the guide rail 4.

The controller 8 includes a step detector 9 for guiding the guide rail 4.
Is detected, the electromagnet 51 and the guide rail 4
In the control of the gap, the detection signal detected by the gap detector 6 last time, that is, the signal used for the control one step before is used without using the detection signal detected by the gap detector 6 this time. Therefore, as shown in FIG. 11C, since the control signal used for controlling the air gap does not change rapidly, the guide support of the elevator can be performed smoothly and stably.

Further, in the above description, an optical detector is used as the step detector 9 for detecting a step such as a joint of the guide rail 4. However, as shown in FIG. And the step may be detected by the switch 11 coming into contact with the protrusion 12. The switch 11 is installed near the gap detector 6 of the electromagnet 51, and the protrusion 12 is arranged near the joint of the guide rail 4 while maintaining the positional relationship between the step and the switch 11.

That is, the traveling guide device 5 is
The switch 11 and the protruding portion 12 are arranged so that the switch of the switch 11 can be detected by the protruding portion 12 to detect the seam of the guide rail 4 when passing through the vicinity of the seam. Therefore, the same effect as that of the step detector 9 which is an optical detector can be obtained.

[0064]

As described above, according to the traveling guide device for an elevator according to the present invention, when the traveling guide device passes near a step such as a seam of the guide rail, the detection signal of the gap detector sharply increases. Even if it changes, the signal used to control the gap between the electromagnet and the guide rail does not change rapidly. Therefore, the guide support of the elevator car can be performed smoothly and stably, and the effect obtained in practical use is great.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an elevator traveling guide device according to a first embodiment of the present invention.

FIG. 2 is a characteristic diagram showing a detection signal from a gap detector and a control signal used for controlling a gap according to the first embodiment of the present invention.

FIG. 3 is an explanatory view of an elevator traveling guide device according to a second embodiment of the present invention.

FIG. 4 is a characteristic diagram showing a detection signal from a gap detector and a control signal used for controlling a gap according to the second embodiment of the present invention.

FIG. 5 is a characteristic diagram showing a detection signal from a gap detector and a control signal used for controlling a gap according to the third embodiment of the present invention.

FIG. 6 is an explanatory diagram of an elevator traveling guide device according to a fourth embodiment of the present invention.

FIG. 7 is a characteristic diagram showing a detection signal from a gap detector and a control signal used for controlling a gap according to the fourth embodiment of the present invention.

FIG. 8 is an explanatory view of an elevator traveling guide device according to a fifth embodiment of the present invention.

FIG. 9 is a characteristic diagram showing a detection signal from a gap detector and a control signal used for controlling a gap according to a fifth embodiment of the present invention.

FIG. 10 is an explanatory view of an elevator traveling guide device according to a sixth embodiment of the present invention.

FIG. 11 is a characteristic diagram showing a detection signal from a gap detector and a control signal used for controlling a gap according to a sixth embodiment of the present invention.

FIG. 12 is an explanatory diagram of another example of the level difference detector according to the sixth embodiment.

FIG. 13 is an explanatory diagram of a conventional elevator traveling guide device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Riding car 2 Rope 3 Hoistway 4 Guide rail 5 Travel guide device 6 Air gap detector 7 Low pass filter 8 Controller 9 Step detector 10 Breaker 11 Switch 12 Projection part 51 Electromagnet 51a Coil 51b Magnetic body part 52 Fixture

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yukihiko Kazuo 2-4-4 Suehirocho, Tsurumi-ku, Yokohama-shi, Kanagawa Pref.

Claims (6)

[Claims] An end is fixed to a car that moves up and down along a guide rail attached to a hoistway, and the other end holds a certain gap between the car and the guide rail by a magnetic force of an electromagnet. In the elevator traveling guide device configured to guide the traveling of the car, a gap between the magnetic body portion of the electromagnet and the guide rail is provided at a predetermined interval in the elevating direction of the car. And the magnetic force of the electromagnet is controlled based on a detection signal of one of the two gap detectors so as to keep the gap constant, based on a detection signal of one of the two gap detectors. A controller for controlling the magnetic force of the electromagnet so that the gap is constant by switching to a detection signal from the other gap detector when the signal changes abruptly. Guidance device . 2. One end is fixed to a car that moves up and down along a guide rail attached to a hoistway, and the other end holds a predetermined gap between the car and the guide rail by the magnetic force of an electromagnet. In the elevator travel guide device configured to guide the travel of the car, the predetermined distance is provided in each of the elevator directions of the car between the magnetic portion of the electromagnet and the guide rail. Three gap detectors for detecting a gap, and a controller for controlling the magnetic force of the electromagnet so that the gap is constant based on a median value of the detection signals of the three gap detectors. An elevator travel guide device, comprising: 3. The elevator travel guide device according to claim 3, wherein the controller replaces a median value of the detection signals of the three gap detectors with a value of the three gap detectors. A travel guide device for an elevator, wherein the magnetic force of the electromagnet is controlled so that the gap is constant based on an average value of the detection signals. 4. One end is fixed to a car that moves up and down along a guide rail attached to a hoistway, and the other end holds a certain gap between the car and the guide rail by a magnetic force of an electromagnet. In the elevator traveling guide device configured to guide the traveling of the car, a gap between the magnetic body portion of the electromagnet and the guide rail is provided at a predetermined interval in the elevating direction of the car. The gap detector for detecting the change amount of the detection signal of the gap detector is equal to or less than a predetermined threshold when the change amount is based on a signal obtained by adding the change amount to the previous detection signal. A controller that controls the magnetic force of the electromagnet so that the gap is constant based on a signal obtained by adding the threshold to a previous detection signal when the threshold is exceeded. Elevator driving guide apparatus. 5. One end is fixed to a car that moves up and down along a guide rail attached to a hoistway, and the other end holds a constant gap between itself and the guide rail by the magnetic force of an electromagnet. In the elevator traveling guide device configured to guide the traveling of the car, a gap between the magnetic body portion of the electromagnet and the guide rail is provided at a predetermined interval in the elevating direction of the car. And a low-pass filter that receives a detection signal from the gap detector and removes a signal having a frequency equal to or higher than a predetermined frequency, based on a signal from the low-pass filter, so that the gap is constant. An elevator travel guide device comprising: a controller for controlling a magnetic force of an electromagnet. 6. One end is fixed to a car that moves up and down along a guide rail attached to a hoistway, and the other end holds a certain gap between the car and the guide rail by magnetic force of an electromagnet. In the elevator traveling guide device configured to guide the traveling of the car, a gap between the magnetic body portion of the electromagnet and the guide rail is provided at a predetermined interval in the elevating direction of the car. A gap detector for detecting the step, a step detector for detecting the step of the guide rail, and based on a previous detection signal detected by the gap detector when the step detector detects the step of the guide rail. A controller for controlling the magnetic force of the electromagnet so that the air gap is constant.