JPH06336383A - Elevator run guiding device - Google Patents

Abstract

PURPOSE:To reduce vibration or noise by run of an elevator car if precision of guide rail placing construction, and prevent damage to a guiding function even at the time of power failure. CONSTITUTION:Guide devices 61-64 are composed of magnetic guide devices 71-74 to guide run of an elevator car 1 contactlessly, and roller guide devices 81-84 movable to get in contact with or be contactless to guide rails 51, 52. A guide control device 9 gives specified support force to the magnetic guide devices 71-74 before departure of the elevator car 1, and it then controls the roller guide devices 81-84 to be contactless to the guide rails 51, 52. While the elevator car 1 is stopped, the car 1 is supported by the roller guides only, and while it runs, the car 1 is guided by the magnetic guides only. At the time of power failure, the roller guides get in contact with the guide rails to guide the car 1 safely.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling guide device for an elevator, and more particularly to a traveling guide device for an elevator that can stably guide and support a car of an elevator.

[0002]

2. Description of the Related Art As a conventional technique relating to a travel guide device for an elevator, for example, the technique described in Japanese Patent Laid-Open No. 2-270790 is known.

According to this prior art, a magnet is further attached to a car and a counterweight of an elevator equipped with rollers for guiding the car and the counterweight along a guide rail, and a closed loop coil facing the magnet is provided. It is arranged along the guide rail, and the traveling force of the elevator guides the car and the counterweight by the repulsive force generated between the magnet and the closed loop coil, and the roller is levitated from the guide rail. It is intended to reduce noise associated with rotation.

As another conventional technique, for example, a technique described in Japanese Patent Laid-Open No. 58-39753 is known.

According to this prior art, by guiding the car so that the gap between the non-contact magnetic guide provided on the car and the guide rail is constantly controlled, the guide roller is not required and the guide rail is laid. Even if the construction cannot be maintained with high precision, it is possible to perform good guide and reduce vibration and noise accompanying the rotation of the roller.

[0006]

In the former prior art described above, the traveling of the elevator car causes
The car and the counterweight obtain the levitation force from the guide rails to lift the rollers from the guide rails. Therefore, in this conventional technique, the car and the counterweight travel while the roller and the guide rail are in contact with each other until the levitation force is generated, so that vibration and noise accompanying the rotation of the roller are generated during this time. However, there is a problem that the guide rail laying work must be performed with high accuracy.

In the latter prior art described above, the non-contact magnetic guide must be controlled even when the elevator is stopped, which consumes a lot of electric power, and the elevator travels. If there is a power failure, the guide function will be lost.

The object of the present invention is to solve the above-mentioned problems of the prior art, to reduce the precision of the laying work of the guide rails, without sacrificing the riding comfort of the elevator, to save power, and in the event of a power failure. An object of the present invention is to provide a travel guide device for an elevator that can safely guide the travel of the elevator car.

[0009]

According to the present invention, the above object is to provide a traveling guide device for an elevator, a first guide device for supporting a car in a non-contact manner, and a contact guide or a non-contact condition for a guide rail. And a second guide device that can be installed together to generate a supporting force in the first guide device before the elevator car travels, and a distance between the car and the guide rail. When the power reaches a predetermined value, the second guide device is controlled so as not to be in contact, and further, when the power failure occurs, the second guide device is automatically brought into contact with the guide rail to generate a supporting force. It is achieved by

[0010]

The traveling guide device provided with the first guide device for supporting the car in a non-contact manner with respect to the guide rail and the second guide device controlled so as to be in contact with or non-contact with the guide rail, While the elevator car is stopped, the mechanism of the second guide device is brought into contact with the guide rails to support the car.
The car can be supported with less power consumption than the non-contact support by the guide device.

Further, since the contact support is switched to the non-contact support before the traveling of the elevator car to start traveling of the elevator car, the guide rail of the second guide is operated while the elevator car is traveling. Vibration and noise due to contact with the can be eliminated.

Further, according to the present invention, the second guide device, which is not in contact with the car while the car is traveling, is automatically brought into contact with the guide rail in case of a power failure to support the car. Even when there is a power outage, the car can be guided stably.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a traveling guide device for an elevator according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram for explaining the overall configuration of an elevator device to which the present invention is applied, and FIG. FIG. 3 is a diagram showing a detailed configuration of a travel guide device according to one embodiment, FIG. 3 is a flowchart illustrating the overall control operation of the guide control device, and FIG. 4 is a flowchart illustrating the control operation of the travel guide device while the elevator is stopped. FIG. 5 is a flowchart for explaining the control operation of the traveling guide device before the departure of the elevator, FIG. 6 is a flowchart for explaining a method of varying the supporting force between the magnetic guide device and the roller guide device, and FIG. 7 is a traveling guide device after the arrival of the elevator. 6 is a flowchart illustrating a control operation of the above. 1 and 2, 1 is a car, 2 is a car frame, 4 is a main rope for raising and lowering, 51 and 52 are guide rails, 61 to 64 are traveling guide devices, 71 to 74 are magnetic guide devices, and 81 to 84. Is a roller guide device, 9 is a guide control device, 20 is a tail cord, 7a is a yoke, 7b is a coil, 7d is a displacement sensor, 8
a is a roller, 8d is a moving device, and 8e is a support spring.

In FIG. 1, which shows the overall construction of an elevator apparatus to which the present invention is applied, a car 1 is supported on a car frame 2 by anti-vibration rubbers 31 and 32. The car frame 2 is provided with main lifting ropes 4 and travel guide devices 61 to 64 that guide the car along the guide rails 51 and 52 that are erected in the hoistway.

The traveling guide devices 61 to 64 generate a supporting force in a non-contact manner with the guide rails 51 and 52, respectively.
Magnetic guide devices 71 to 74 which are the guide devices of the above, and roller guide devices 81 to 8 which are the second guide devices which can be brought into contact or non-contact with the guide rails 51 and 52.
4 and.

The guide control device 9 is installed in the car 1, supplies drive power to the magnetic guide devices 71 to 74 and the roller guide devices 81 to 84 via power lines 101 to 108, and also controls each guide device. Signals necessary for control are fetched through the control signal lines 111 to 114, and the traveling guide devices 61 to 64 are controlled according to the traveling state of the elevator. Further, the guidance control device 9 receives a power supply required by the guidance control device 9 from a control panel (not shown) in an elevator machine room via a tail cord 20 that is hung under the car. Also, it receives signals such as the traveling state of the elevator.

The tail cord 20 is constructed by integrating power lines such as lighting in a car and signal lines for call registration, and the number thereof is large in a building with a high head and the length thereof is also large. It will be This tail cord 2
0 is hung from the center of the floor of car 1,
It is preferable in terms of the balance of the car, but it does not necessarily have to be hung from the center. However, in this case, the balance of the car may be lost depending on the position of the car.

Next, the detailed structure of the traveling guide devices 61 to 64 will be described with reference to FIG. 2 by taking the traveling guide device 61 as an example. The other travel guide devices 62 to 64 are also configured in the same manner.

The traveling guide device 61 comprises a magnetic guide device 71 for guiding the car 1 in a non-contact manner and a roller guide device 81 for guiding the car 1 by bringing a roller into contact with a guide rail.

The magnetic guide device 71 is a non-magnetic material that supports a yoke 7a formed in a U shape, a coil 7b wound around the yoke 7a, and an electromagnet composed of the yoke 7a and the coil 7b. A frame body 7c formed of a body and a displacement sensor 7d such as a laser, an ultrasonic wave or an overcurrent type for measuring the distance between the end faces of the guide rail 51 and the yoke 7a in a non-contact manner, Power line 1 for coil 7b
01 and the control signal line 111 from the displacement sensor 7d are connected to the guidance control device 9, respectively.

The magnetic guide device 71 guides the car 1 under the control of the guide control device 9 so that the distance between the end surfaces of the guide rail 51 and the yoke 7a becomes a predetermined value. In case of other magnetic guide devices 72 to 7
Due to the relationship with 4, the guide rail 51 and the yoke 7a are connected to each other in order to guide the car 1 with high accuracy without being affected by the mounting accuracy of the guide rail 51. It is controlled to change the distance between the end faces. Note that such a control method has already been proposed and known.

On the other hand, the roller guide device 81 includes a roller 8a facing the guide surface of the guide rail 51, a support arm 8b and a rod 8c for supporting the roller 8a so as to be movable in a direction perpendicular to the guide surface of the guide rail. And a moving device 8d composed of a DC motor and a speed reducer for moving the supporting arm 8b and the rod 8c, and a supporting spring 8e by an elastic member which is guided by the front rod 8c and presses the roller 8a against the guide rail 51. A power line 105 configured to drive the moving device 8d is connected to the guidance control device 9.

Next, the operation of the travel guide device according to the embodiment of the present invention constructed as described above will be described with reference to the guide control device 9
The control operation will be described with reference to FIGS.

As shown in FIG. 3, the guidance control device 9 determines whether the traveling state of the elevator, which is input via the tail cord 20, is stopped, before departure, during traveling, or after arrival. The distinction is made, and the control of the travel guidance devices 61 to 64 is executed according to each state.

When the elevator is stopped, the guide control device 9 operates the roller 8a of the roller guide devices 81 to 84, the guide rail 51, and the guide rail 51, as shown in FIG.
It is controlled so as to contact 52. And at this time,
Magnetic guide devices 71-84 and roller guide devices 81-
The power supply to the moving device 8d of 84 is stopped.

As a result, the car 1 is supported by the pressing force of the support spring 8e via the roller 8a while the elevator is stopped, and power can be saved while the elevator is stopped.

In the embodiment of the present invention, the guide control device 9 may be provided with a function of detecting the load current of the moving device 8d of the roller guide devices 81 to 84. Accordingly, the guide control device 9 can estimate the contact force of the roller 8a with respect to the guide rails 51 and 52 from the magnitude of the load current. If the power for supporting the moving device 8d of the roller guide devices 81-84 is extremely smaller than the power required for supporting the car 1 by the magnetic guide devices 71-74, one embodiment of the present invention As described above, the car 1 can be supported by controlling the contact force described above so as not to disturb the balance of the car due to the stop position of the car 1, and by the support by the magnetic guide device. Can also save power.

When the traveling state of the car is the state before the departure from when the traveling request is issued until the car starts traveling, the guidance control device 9 operates as shown in FIG.
As shown in FIG. 5, electric power is applied to the magnetic guide devices 71 to 74 to generate a predetermined supporting force, and
After the distance between the end surface of the yoke 7a and the guide rails 51 and 52 is secured to a predetermined value, the roller guide devices 81 to 84
Power for overcoming the pressing force of the support spring is applied to the moving device 8d to move the support arm 8b and the rod 8c so that the roller 8a and the guide rails 51 and 52 are not in contact with each other.

According to the embodiment of the present invention, since the car 1 can be supported in a completely non-contact state before the departure of the elevator, the elevator can be installed even if the accuracy of the laying work of the guide rail is reduced. In the whole driving range,
The car 1 can be guided with high accuracy, and vibration and noise can be reduced.

Switching of the support of the magnetic guide devices 71 to 74 and the roller guide devices 81 to 84 for the car 1 is performed as shown in FIG.
It is possible to control the supporting force of No. 4 and the supporting force of the roller guide devices 81 to 84 so that the supporting force of the roller guide devices 81 to 84 gradually shifts within a predetermined time t. Can be reduced.

Further, in one embodiment of the present invention, the rollers 8a of the roller guide devices 81 to 84 described above are connected to the guide rails 5.
When the rollers 8a of the roller guide devices 81 to 84 are not in contact with the magnetic guide devices 71 to 7 when they are not in contact with each other.
4 guide rails 51, 52 slightly more than the end surface of yoke 7a
By moving the cage 1 to a position close to, the collision between the yoke 7a and the guide rails 51 and 52 can be prevented even when the car 1 is unexpectedly vibrated.

When the elevator car is in the traveling state, the guidance control device 9 operates 30.
As the guide rails 51 and 52 stored in advance and the traveling position of the car,
1, 52 and the end surfaces of the yoke 7a of the magnetic guide devices 71 to 74 are controlled so that the car 1 does not vibrate only by the magnetic guide devices 71 to 74.
Guidance control.

According to one embodiment of the present invention, when a power failure occurs for some reason while the elevator is traveling, the holding force of the moving device 8d of the roller guide devices 81 to 84 is lost, and the support spring 8e causes the roller 8a to move to the guide rail. 51, 52
In such a case, the car 1 can be safely guided because of the mechanism for contacting the car 1.

If the traveling state of the car is the state after the arrival of the elevator, the guidance control device 9 operates 40.
Then, the control as shown in FIG. 7 is performed.

(1) First, the roller guide devices 81 to 84
Roller 8a of the above-mentioned guide rails 51 and 52 to operate so as to provide a supporting force for the car 1, and cooperate with the supporting force of the magnetic guide devices 71 to 74 to prevent the car shake generated when the passengers get on and off the car. Prevent (step 40)
1).

(2) It is continuously determined whether or not there is a traveling request, and if there is a departure request, the roller guide devices 81 to 84 are brought into non-contact as in the pre-departure operation 20, and the car is re-established. If the vehicle starts traveling, the above-described movement during traveling 30
Is controlled (steps 402 to 404).

(3) If it is determined in step 402 that there is no travel request, the supply of power to the travel guidance devices 61 to 64 is stopped, the above-described operation 10 during the stop is controlled, and the operation waits (step 405). ).

According to the above-described embodiment of the present invention, even if the accuracy of the laying work of the guide rail is reduced, the riding comfort of the elevator is not impaired, the power is saved, and the car can be safely operated even in the case of a power failure. I can guide you.

Although the above-described one embodiment of the present invention has been described with respect to the traveling guide device in which the supporting force of the car acts in the end face directions of the two guide rails, the present invention is not limited to the guide rails. A travel guide device similar to that described above can be installed on the top, bottom, left, and right of the car frame with respect to the surface, and a better effect can be obtained. Further, in the present invention, as the second guide device, a guide device provided with a guide shoe may be used instead of the guide device using the roller.

FIG. 8 is a diagram showing the structure of a travel guide device according to another embodiment of the present invention. In FIG. 8, reference numeral 21 is a battery device, and other reference numerals are the same as those in FIG.

In another embodiment of the present invention shown in FIG. 8, a power line 20a in the tail cord 20 supplying electric power to the guide device 9 of the above-described embodiment is connected to a battery 21a which is a DC power source and a power failure. A battery device 21 including a switch 21b that is detected and turned on is provided.

According to this other embodiment of the present invention, since electric power can be supplied from the battery device 21 to the traveling guide devices 61 to 64 at the time of a power failure, the car 1 can be safely guided even during a power failure. can do. The battery device 21 may be installed on the car.

[0043]

As described above, according to the present invention, it is possible to reduce the accuracy of the laying work of the guide rail, reduce the vibration and noise of the car during traveling, and ride safely even during a power failure. You can guide the car.

[Brief description of drawings]

FIG. 1 is a diagram illustrating an overall configuration of an elevator device to which the present invention has been applied.

FIG. 2 is a diagram showing a detailed configuration of a travel guide device according to an embodiment of the present invention.

FIG. 3 is a diagram illustrating the overall control operation of the guidance control device.

FIG. 4 is a diagram illustrating a control operation of a travel guide device while the elevator is stopped.

FIG. 5 is a diagram illustrating a control operation of the traveling guide device before the departure from the elevator.

FIG. 6 is a diagram illustrating a method of varying the supporting force between the magnetic guide device and the roller guide device.

FIG. 7 is a diagram illustrating a control operation of the traveling guide device after arrival at the elevator.

FIG. 8 is a diagram showing a configuration of a travel guide device according to another embodiment of the present invention.

[Explanation of symbols]

 1 Car 2 Car frame 51, 52 Guide rail 61-64 Travel guide device 71-74 Magnetic guide device 81-84 Roller guide device 9 Guide control device 20 Tail cord 7a Yoke 7b Coil 7d Displacement sensor 8a Roller 8d Moving device 8e Support spring 21 Battery device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiaki Kurosawa 1-6 Kandanishikicho, Chiyoda-ku, Tokyo Inside Hitachi Building System Service Co., Ltd. (72) Akihiro Okada 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Hitachi Building Systems Services Co., Ltd. (72) Hiromi Inaba Inventor Hiromi Inaba 7-1, 1-1 Omika-cho, Hitachi City, Ibaraki Hitachi Ltd. Hitachi Research Laboratory (72) Inventor Masachika Yamazaki 7-chome, Omika-cho, Hitachi City, Ibaraki Prefecture Hitachi Ltd. Hitachi Research Laboratory (72) Inventor Masayuki Shigeta 1070 Ichige, Katsuta City, Ibaraki Prefecture In Mito Plant, Hitachi Ltd. (72) Masanobu Ito 1070 Ige, Katsuta City, Ibaraki Stock Hitachi, Ltd. Mito factory

Claims (10)

[Claims] 1. A travel guide device for an elevator, which guides an elevator car along a guide rail in a hoistway, wherein the distance between the car and the guide rail is variably controlled by a non-contact supporting force. And a non-contact means for switching the guide rail to guide the car, and a second guide device for guiding the car in contact with the guide rail. A travel guide device for an elevator, comprising: 2. The elevator travel guide device according to claim 1, wherein the first guide device is controlled to be inactive when the second guide device is in an operating state. 3. A travel guide device for an elevator, which guides an elevator car along a guide rail in a hoistway, wherein the distance between the car and the guide rail is variably controlled by a non-contact supporting force. And a non-contact means for switching the guide rail to guide the car, and a second guide device for guiding the car in contact with the guide rail. And before the departure of the car, said first
Travel guide device for an elevator, wherein the guide device outputs a predetermined force in a non-contact manner to secure a predetermined distance, and then the second guide device is brought into non-contact with the guide rail. 4. The first guide device and the second guide device are supplied with power from a battery device for backup at the time of power failure.
The traveling guide device for the elevator described. 5. The second guide device includes means for detecting a contact force with the guide rail, and controls the contact force of the second guide device based on the detection signal. The travel guide device for an elevator according to any one of Items 1 to 4. 6. The movement control of the second guide device is controlled to a position capable of preventing a collision between the first guide device and the guide rail when the second guide device is not in contact with the guide rail. The travel guide device for an elevator according to claim 1, wherein: 7. The second guide device is configured to automatically contact the guide rail when power to the travel guide device or the elevator system is cut off. 1 to 6, a travel guide device for an elevator. 8. Before the car of the elevator runs, the support force of the car due to non-contact of the first guide device is gradually increased, and the car support force due to contact of the second guide device is increased. 8. The traveling guide device for an elevator according to claim 1, wherein control is performed so as to gradually weaken. 9. The elevator travel guide apparatus according to claim 1, wherein the first guide apparatus is a magnetic guide apparatus composed of an electromagnet. 10. The elevator traveling guide device according to claim 1, wherein the second guide device includes a guide roller or a guide shoe.