JPH11209031A - Antiwobble device for main rope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid rattling in a prior antiwobble device for a main rope. SOLUTION: An antiwobble wall 22 for restraining a wobble of a main rope supporting an elevator car is mounted on a frame 12 guided and supported so as to be movable vertically by guide rails 3. The guide rail 3 is provided with a stopper 11 which locks the frame 12 in the vicinity of an intermediate floor to restrain a downward movement thereof. The stopper 11 is internally provided with an electromagnetic coil 26 to prevent generation of an impact sound in the event of a collision with the frame 12, and while the frame 12 has magnetic pieces 24 fixed to its engaging surfaces with the stoppers 11. These engaging surfaces exhibit a same magnetic characteristic and are engaged in a predeterminedly spaced relation by their repulsion force. Similarly, a support arm 13 arranged on an upper portion of the elevator car 2 is internally provided with an electromagnetic coil 34, and the frame 12 is provided with a magnetic piece 38 on an engaging surface with the support arm 13. As they exhibit the same magnetic characteristic at the engaging surfaces, the frame 12 is supported relative to the supporting arm 13 in a predeterminedly spaced relation by a repulsion force introduced therebetween.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for suspending and supporting an elevator car, and suppressing a swing of a main rope for moving the elevator car up and down.

[0002]

2. Description of the Related Art A conventional elevator system is shown in FIG. An elevator car 2 which moves up and down while being guided by a guide rail 3 in a hoistway K is fixed to one end of a main rope 1 wound around a hoisting machine 4 provided in an upper part of a building and a machine room, and suspended. Supported. The main rope 1 is stretched by an elevator car 2 and a weight (not shown) fixed to the other end.

However, the main rope 1 may bend or run due to vibration at the time of starting the elevator car 2 or other external force. The run-out of the main rope 1 is transmitted to the elevator car 2 as vibration, which may impair the ride comfort of passengers. In particular, when the elevator car 2 is located on the lowest floor, or as in a high-rise building, the longer the length of the main rope 1 is, the larger the swing width becomes. Therefore, in order to ensure a more stable operation of the elevator, a means for eliminating the deflection and deflection of the main rope is required.
A technology developed in response to this request is a main rope steady rest device, which is provided in this elevator system.

As shown in FIG. 13, this main rope steadying device surrounds a frame 7 guided by a guide rail 3 above an elevator car 2 and supported so as to be vertically movable, and surrounding the main rope 1 attached to the frame. There is provided a steady wall 8 for limiting the swing width, and a stopper 6 for hanging the frame 7 near an intermediate floor where the main rope 1 swings most. Meanwhile, elevator car 2
The upper beam 5 is provided with a support arm 9 for supporting and pushing up the frame 7 when the elevator car 2 moves up.

When the elevator car 2 is located on the lower floor, the frame 7 is hung by the stopper 6 and is disposed near the center floor of the main rope steady rest device constructed as described above. In particular, when the main rope 1 does not oscillate, the main rope 1 does not come into contact with the steady rest wall 8, but when the main rope 1 is subjected to some vibration or the like, the main rope 1 is bent or oscillated. In the meantime, the main rope 1 comes into contact with the steady rest wall 8 and its swing is suppressed.

[0006] When the elevator car 2 moves up, the frame 7 moves as shown in FIGS.
The support arm 9 of the elevator car 2 collides with the frame 7 and is grasped and pushed up. Then, when the elevator car 2 is lowered again, the frame 7 is also lowered accordingly, and the frame 7 collides with the stopper 6 on the way and is hung by the stopper 6. Then, at this position, the swing of the main rope 1 is suppressed again by the steady wall 8.

[0007]

However, in the conventional main rope steady rest device, as described above, the swing of the main rope can be suppressed and the riding comfort can be improved, but the frame is supported by the support arms of the elevator car. When the frame is hooked on the stopper, and when the frame is engaged with the stopper, a collision occurs between them, so that a loud collision sound is generated. Since this collision sound occurs near the elevator car,
There was a sound in the car that could give passengers anxiety.

Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to reduce and prevent the occurrence of collision noise between a frame and a stopper and between a frame and a support arm. It is to provide a main rope steady rest device.

[0009]

In order to achieve the above object, a main rope steadying device according to the present invention has two ends guided by the guide rails, and engages with the upper part of the elevator car to raise and lower the elevator car. A frame that can be moved up and down with the movement, a sway wall attached to the frame and surrounding the main rope to suppress the sway thereof, and protrudingly provided at the sway position of the main rope to limit the downward movement of the frame. And both engagement surfaces of the stopper and the frame and both engagement surfaces of the frame and the elevator car are each provided with the same polarity of magnetism.

[0010] According to the above configuration, since both the engagement surfaces of the frame and the elevator car are magnetized with the same polarity, when they come close to each other, a collision is avoided by their repulsive force. Alternatively, it is possible to prevent or reduce the collision noise by making the contact gentle. Similarly, by giving the same polarity of magnetism to both engagement surfaces of the stopper and the frame, it is possible to avoid collision or reduce collision noise.

Therefore, it is possible to prevent or reduce the contact noise when the elevator car rises and the elevator car supports the frame and when the elevator car descends and the frame is hooked on the stopper. It is possible to eliminate anxiety which may be given to the user.

In the above, the position where the swing width of the main rope is maximum is substantially near the middle floor of the hoistway. That is, when the elevator car is located at the lowest floor, the distance between the hoist and the elevator car in the machine room is the longest, and at the same time, the main rope is pulled out from the hoist to the elevator car side the longest. In this state, when the main rope swings, the swing width of the main rope becomes maximum at an intermediate position thereof, that is, near the middle floor of the hoistway. Therefore, by attaching the stopper at a position where the swing width is maximized, the swing of the main rope can be effectively suppressed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a main rope steady rest device will be described below with reference to the drawings. In this embodiment, the same polarity magnetism is given to the engagement surface between the frame and the stopper, and the same polarity magnetism is also given to the engagement surface between the frame and the support arm. It is characterized by avoiding collision or contact.

[First Embodiment] FIGS. 1 to 7 show a main rope steadying device according to a first embodiment. FIG. 1 shows the overall configuration of an elevator car provided with a main rope steadying device, and FIG. 2 shows a state in which a support arm of the elevator car approaches the frame 12.

The main rope steady rest device 10 is located above the elevator car 2 and has a frame 12 whose both ends are guided by guide rails 3 and can move up and down, and a steady rest attached to the frame 12 and surrounding the main rope. A wall 22 is provided. In addition, the frame 1
There is provided a stopper 11 for arranging 2 at a main rope steady rest position near the middle floor of the hoistway.

More specifically, the above-mentioned frame 12 is shown in FIG.
As shown in FIG. 2, guide rail grips 21 are provided at both ends, and the guide rails 3
It is supported so that it can be guided. As shown in FIG. 2, guide rollers 21 for smoothing the vertical movement of the frame 12 are provided above and below the guide rail gripping portion 21.
a is fixed.

In the center of the frame 12, there is provided a steady wall 22 surrounding the main rope 1, and the swing width of the main rope 1 is limited by the steady wall 22. In the present embodiment, the steady rest wall 22 surrounds the main rope 1 in a square shape. However, the present invention is not limited to this configuration, and may be a circular shape.

Also, the frame 1 has the stopper 1
Projection 23 for engaging frame 1 and engaging frame 12
Are formed. A magnetic body 24 made of a permanent magnet is attached to the stopper 11 and the engagement surface of the projection 23. Further, a magnetic body 38 made of a permanent magnet is fixed to the frame 12 in order to impart magnetism also to a surface facing the support arm 13 described later.

The stopper 11 is arranged in parallel with the guide rail 3 by a fixing plate 20 fixed to the back surface of the guide rail, and is configured to be able to engage with the projection 23 of the frame 12.

As shown in FIG. 4, the stopper 11 has
An electromagnetic coil 26 is provided inside the projection 23 so as to provide magnetism having the same polarity as that of the magnetic body 24. The electromagnetic coil 26 is provided with a power supply unit 27, and an AC / DC converter 28 that rectifies AC from the power supply unit 27 and converts the AC power into DC power is connected to the power supply unit 27.

That is, the electromagnetic coil 26 receives power from the AC / DC converter 28 and forms a magnetic flux 29.
Due to the magnetic flux 29 generated here, a repulsive force is generated between the magnetic body 24 and a gap (G) between the surface of the magnetic body 24 and the surface of the stopper. Therefore, the frame 12
Are supported at a predetermined interval without direct contact with the stopper 11.

On the other hand, as shown in FIG. 5, a support arm 13 for supporting the frame 12 is attached to the upper beam 5 of the elevator car 2 by a mounting bracket 33. The support arm 13 is provided with an electromagnetic coil 34 inside similarly to the stopper 11 described above.
2 has the same polarity as the magnetic body 38 fixed to the magnetic body 38. The electromagnetic coil 34 includes a power supply unit 35 and an AC / DC converter 36 as in the case of the electromagnetic coil 26 of the stopper 11.

Accordingly, when the electromagnetic coil 34 also receives a DC power from the AC / DC converter 36, a magnetic flux 37 is formed, so that a repulsive force is generated between the support arm 13 and the magnetic body 38 of the frame 12. , Support arm and magnetic body 3
8, a gap (G) is formed. Therefore, the frame 12 is supported at a predetermined interval without directly contacting the support arm 13.

In order to adjust the power supply from the power supply units 27 and 35, a coil excitation switch 30 and a coil cutoff switch 31 are provided on the side wall of the hoistway. Also, on the outer wall of the elevator car 2, these switches 3
A cam 32 for pressing 0 and 31 is fixed. That is, the coil excitation switch 30 is depressed by the cam 32 when the elevator car 2 rises, and the two electromagnetic coils 26, 3
4 and a coil disconnection switch 31
Is configured to be depressed by the cam 32 when the elevator car 2 descends to shut off the power to the two electromagnetic coils 26 and 34.

Hereinafter, the operation of the elevator car provided with the main rope steadying device will be described with reference to the drawings.

As shown in FIG. 1, when the elevator car 2 is located on the lower floor, the frame 12 is hooked on the stopper 11 mounted near the middle floor, and at this position, the steady rest wall 22 is provided. Thereby, the deflection of the main rope 1 is suppressed.

When the elevator car 2 moves upward, first, the cam 32 is turned on when the elevator car 2 moves.
0, power is supplied to the stoppers 11 and the electromagnetic coils 26 and 34 inside the support arm 13,
4 is excited.

When the support arm 13 approaches the magnetic body 38 attached to the frame, a repulsive force is generated by the magnetism of the same polarity, and a gap (G) is formed between these surfaces (FIG. 5). As the elevator car continues to ascend, the frame 12 is supported by the support arm 13 and pushed up with the gap maintained as shown in FIG.

When the elevator car 2 moves down to the position shown in FIG. 6 again, the frame 12 is hooked on the stopper 11. Also in this case, the frame 12 is hooked on the stopper 11 in a state where the gap (G) is formed by the repulsive force between the magnetic flux 29 and the magnetic body 24 generated in the stopper 11. The frame 12 arranged near the middle floor suppresses the swing of the main rope 1 by the steady wall 22.

Further, when the elevator car 2 is further lowered, the cam 32 pushes down the coil cutoff switch 31 to cut off the power supply to the two electromagnetic coils 26 and 34. Due to the interruption of the power supply, the magnetic flux in the electromagnetic coil 26 disappears, and the frame 12 comes into gentle contact with the stopper 11 and is directly hooked. As a result, a direct collision between the stopper and the frame, or between the frame and the support arm, which occurs in the vicinity of the elevator car as in the related art, can be avoided, thereby making it possible to prevent the generation of a collision sound.

In the above description, the electromagnetic coil 26 is used as a means for imparting magnetism to the stopper 11 and the support arm 13.
It is also possible to use a permanent magnet instead of 34.

[Second Embodiment] FIGS. 8 to 11 show a main rope steady rest according to a second embodiment. This embodiment is substantially the same as the first embodiment, except that a plurality of frames are provided and a plurality of steady walls are provided. In other words, this is effective when a single steady rest wall installed on an intermediate floor, such as an elevator in a high-rise building, cannot sufficiently suppress the swing of the main rope. In addition, about the same structure as 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

As shown in FIG. 8, in the present embodiment, the frames (41, 42, 4,
3) are provided, and three sets of stoppers 4 are correspondingly provided.
4, 45 and 46 are provided at predetermined intervals on the guide rail. These stoppers correspond to the shape of the run-out of the main rope, and are preferably installed at an effective anti-sway position where the run-out can be suppressed. Here, one set (45) is mounted near the middle floor, and one set (44, 46) is mounted vertically at substantially equal intervals on both sides.

The stoppers 44, 45, 46
As shown in FIG. 9, is mounted so as to gradually move away from the guide rail 3 as it goes upward.
Correspondingly, each of the projections 411, 421, 431 of the frames 41, 42, 43 also bends and protrudes gradually from the guide rail 3 little by little. Therefore, the lower and middle frames 41 and 42 can move up and down without being hindered by the stoppers located above.

Further, in order to avoid mutual collision when these frames are pushed up and to prevent the generation of collision sound,
In each of the frames 41, 42, and 43, a plurality of magnetic bodies 47 are fixed on surfaces facing each other. The fixed position of the magnetic body can be provided at any position as long as it can prevent contact with each other,
Here, the magnetic body is fixed to upper and lower surfaces on a straight line extending upward from the support arm 13. In addition, these magnetic materials
They are attached in the direction of the same polarity between the magnetic bodies facing each other. Therefore, when the frames 41, 42, 43 approach each other, a gap (G) is formed by the repulsive force of these magnetic substances.

The operation of the main rope steady rest according to the second embodiment will be described below.

As shown in FIG. 8, when the elevator car 2 is located on the lower floor, each of the frames 41, 42, 43
Are hung on stoppers 44, 45 and 46, respectively. Therefore, when the main rope 1 swings in this state, the swing of the main rope 1 is stopped by the three steady rest walls 412, 422, and 432.

When the elevator car 2 rises, the coil excitation switch 30 is pressed down by the cam 32 to excite the stoppers 44, 45, 46 and the electromagnetic coil of the support arm 13. When the support arm 13 of the elevator car 2 reaches the vicinity of the lower frame 41 in this state, a repulsive force is generated between the support arm 13 and the magnetic material of the lower frame 41 as in the first embodiment, and And is pushed up by a gap (G). When the lower frame is pushed up from the steady rest position, the steady rest walls 422 and 432 of the remaining middle and upper frames suppress the swing of the main rope.

Further, when the elevator car 2 rises and the pushed lower frame 41 approaches the middle frame 42, a repulsive force is generated between the opposing magnetic members, and these frames are engaged at a predetermined interval. Overlap. When the elevator car 2 continues to rise in this state, the two frames 41 and 42 are pushed upward while maintaining the gap (G ′). Finally, as shown in FIG. 11, the lower, middle, and upper frames 41, 42, and 43 are overlapped at predetermined intervals and lifted up.

When the elevator car descends again and each frame is hooked on each stopper, it is hooked at a fixed interval without direct contact as in the first embodiment. You.

[Third Embodiment] FIG. 12 shows a third embodiment.

In this embodiment, the stopper 50 is provided with the electromagnetic coil 51 inside as described above.
The electromagnetic coil 51 is configured to generate an induced electromotive force without supplying power. That is, the electromagnetic coil 51 faces the frame 53,
1 is provided with an elongated magnetic body 54 that can be inserted into the magnetic body 54. When the magnetic body 54 is inserted into the electromagnetic coil 51, an induced electromotive force (eddy current) is applied to the electromagnetic coil 51.
Is generated, and a magnetic flux 52 is generated in the electromagnetic coil 51. By configuring the magnetic flux 52 to have the same polarity as that of the magnetic material, a repulsive force is generated between them and a large collision can be avoided. With the disappearance of the induced electromotive force generated here, the frame 53 gradually descends, and finally the frame 53 is hooked on the stopper 50.

The frame 53 has a cushion 55 made of an elastic material such as rubber on a surface facing the stopper 50.
The cushion 55 is used to reduce contact noise when the cushion 55 is finally hooked on the stopper.

[0044]

As described above, the main rope steady rest according to the present invention avoids the collision between the frame and the support arm and the collision between the frame and the stopper, thereby preventing the generation of a collision sound therebetween. Is possible. Therefore, in the elevator equipped with the main rope steady rest device, it is possible to provide a stable elevator operation by suppressing the swing of the main rope without giving a passenger an uneasy feeling unlike the conventional main rope steady rest device. It becomes possible.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an elevator including a main rope steady rest according to a first embodiment.

FIG. 2 is a diagram illustrating a state in which the elevator car approaches a frame in the elevator including the main rope steady rest according to the first embodiment.

FIG. 3 is a plan view of the main rope steady rest device of the first embodiment.

FIG. 4 is a partially enlarged view of the main rope steady rest device of the first embodiment.

FIG. 5 is a partially enlarged view of the main rope steady rest device of the first embodiment.

FIG. 6 is a diagram illustrating a state in which the elevator car approaches the frame in the elevator including the main rope steady rest according to the first embodiment.

FIG. 7 is a diagram showing a state in which the elevator car pushes up the frame in the elevator including the main rope steady rest according to the first embodiment.

FIG. 8 is an overall configuration diagram of an elevator including a main rope steady rest according to a second embodiment.

FIG. 9 is a plan view of a main rope steady rest according to a second embodiment.

FIG. 10 is a partially enlarged view of a main rope steady rest device according to a second embodiment.

FIG. 11 is a diagram showing a state in which an elevator car pushes up a frame in an elevator including a main rope steady rest according to a second embodiment.

FIG. 12 is a partially enlarged view of a main rope steady rest device according to a third embodiment.

FIG. 13 is an overall configuration diagram of an elevator including a conventional main rope steady rest device.

FIG. 14 is a diagram showing a state in which an elevator car approaches a frame in an elevator equipped with a conventional main rope steady rest device.

FIG. 15 is a diagram showing a state in which an elevator car pushes up a frame in an elevator equipped with a conventional main rope steady rest device.

[Explanation of symbols]

12, 41, 42, 43 frames, 22, 412,
422,432 steady rest wall, 11,44,45,4
6 Stopper, 26, 34 Electromagnetic coil, 24, 3
8,47 Magnetic material.

Claims (2)

[Claims] 1. A device connected to an elevator car guided by a guide rail to suppress deflection of a main rope for moving the elevator car up and down, wherein both ends are guided by the guide rail, and the both ends are engaged with an upper portion of the elevator car. A frame that can move up and down with the vertical movement of the elevator car, a steady wall attached to the frame, surrounding the main rope and suppressing the swing thereof, and protrudingly provided at a steady rest position of the main rope, A stopper for restricting the downward movement of the frame, wherein both engagement surfaces of the stopper and the frame and both engagement surfaces of the frame and the elevator car are respectively magnetized with the same polarity. A main rope steady rest device. 2. The main rope steady rest according to claim 1, wherein the steady rest position of the main rope is substantially at an intermediate floor of an elevator shaft.