JPH0524768A - Elevator and guide device thereof - Google Patents

Abstract

PURPOSE:To prevent transverse oscillation of a riding cage by absorbing a transverse fluctuating load component caused by curving a rail for guiding the riding cage of an elevator. CONSTITUTION:In a guide device 4, a guide piece brought into contact with a rail is supported by a spring. Electromagnets 12A, 12B for attracting the rail 3 are provided in a guide piece supporting member 7 which is rotatably supported to a guide piece bed 8 by a pin 9. Further, the guide device 4 is provided with a control unit not shown in the drawing, that is, sensor not shown in the drawing for detecting displacement of the guide piece supporting member 7 by distortion of the rail 3 at the time of lifting a riding cage 2 and a controller for controlling an excitation condition of the electromagnets 12A, 12B, for instance, direction and intensity of a current so as to eliminate this detected displacement. In this way, a transverse fluctuating load component by curving the rail for guiding the riding cage is absorbed by elasticity of the guide piece and prevented from being transmitted the riding cage, and an elevator having a comfortable feeling to ride with no transverse oscillation can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator, and more particularly to an elevator guide device for guiding a car along a rail provided in a hoistway.

[0002]

2. Description of the Related Art An elevator car travels along a pair of guide rails while defining a horizontal position of the car through a guide device having guides made of sliders or rollers. . At this time, due to the bending of the rail, the car is subjected to forced vibration displacement in the lateral direction via the guide device.
In order to reduce the lateral vibration due to the forced excitation, the guide device includes a guide element elastic body of the tire portion of the roller and a guide support elastic body provided between the guide support member supporting the guide element and the guide element base. It will guide you through the car. In order to prevent lateral vibration from bending the rails, we want to reduce the spring constant of these elastic bodies, but keep the deflection of these elastic bodies due to the deviation of the loading load in the car within a certain value. In order to guide the car safely, a certain rigidity is required, and there is a limit in reducing the spring constant of the elastic body. As a conventional technique for satisfying both functions required for an elevator guide device, Japanese Patent Publication No. 58-39753.
In the publication, an electromagnet facing the guide rail in three directions with a gap and a gap detector for detecting the gap are provided.
With a control means for decreasing the attraction force of the electromagnet with the narrower gap and increasing the attraction force of the electromagnet with the wider gap, a configuration is provided in which each cage in the horizontal direction is kept constant and the car is guided. It is disclosed. Also, Japanese Patent Publication Sho 58-3
In Japanese Patent Laid-Open No. 63-87482, which is an improved patent of 9753, electromagnets facing a guide rail from three directions with a gap, and a vertical reference body extending in parallel with the guide rail are stretched to form a car. An air gap detector that detects the air gap between the vertical reference body is installed in the vehicle, and the electromagnet is controlled by the output of this air gap detector to keep the air gap between the air gap detector and the vertical reference body constant. A configuration for guiding is disclosed.

[0003]

In the technique described in Japanese Patent Publication No. 58-39753 of the above-mentioned conventional technique, the electromagnets arranged in three directions are controlled so as to maintain a constant gap with the guide rail. When the guide rail is installed, if it is misaligned with respect to the center line of each electromagnet, or if the guide rail seams are misaligned and there is a step, or if the guide rail itself is distorted, it responds to the step or distortion. Then, the vibration is transmitted from the electromagnet to the guide device and the car. In addition, since an unbalanced load component generated due to the deviation of the loaded load in the car is also supported in a non-contact manner, a guide force greater than the vibration force generated due to the bending of the rail is required, and its application may be limited. .

The technique disclosed in Japanese Patent Laid-Open No. 63-87482 requires a vertical reference body of an absolute space in the elevator hoistway, and in a super high-rise building whose height reaches 250 m, the difference in thermal expansion of the building is required. It is difficult to hold the vertical reference body vertically if the elevator is installed in the first stage of construction and the building is distorted as the construction progresses due to the progress of construction. Also, its amplitude is 1 due to the shaking of the building.
If it is more than mm, the effect is significantly reduced.

An object of the present invention is to prevent the lateral fluctuation load component due to the bending of the rail for guiding the elevator car from being transmitted to the car.

[0006]

SUMMARY OF THE INVENTION The above-mentioned object is provided with opposing rails standing upright along a hoistway and a guide device provided on a car and abutting on each of the rails to guide the car. In the elevator, the rails are made of a magnetic material, at least one pair of the guide devices is an elastic guider that abuts the rails, and the guiders are supported by the car and supported by springs. A guider supporting member for urging the guider so as to abut the rail, an electromagnet disposed on the guider supporting member in the vicinity of the rail, and a guider due to distortion of the rail when the car is lifted or lowered. This is achieved by having means for detecting the displacement of the support member and electromagnet control means for controlling the excitation condition of the electromagnet so as to eliminate the displacement detected by the means.

[0007]

When the guide of the car guide device passes through the bent portion of one of the rails installed upright along the hoistway, the elastic body of the guide that abuts on the rail elastically expands and contracts to restore it. Due to the force, the car receives a lateral excitation force, and the rolling motion deteriorates the riding comfort of the car.

According to the above construction, when the guide of the car guide device passes through the curved portion of the rail, the guide support member for supporting the guide is displaced, and the means for detecting the displacement detects the displacement. Then, the electromagnet control means controls the excitation condition of the electromagnets arranged on the guider support member on both sides of the guider in proximity to the rail so as to eliminate the detected displacement.

That is, when the rail has a convex bend in the direction of the car, if the electromagnetic force of the electromagnet is kept at an initial value, the elastic body of the guide contacting the rail receives a compressive force and its reaction force. Although it moves in the direction opposite to the hoistway wall, the electromagnet strengthens the electromagnetic force that attracts the rail and gives a reaction force equal to the compression force, which causes the elastic body to be compressed and the horizontal position of the car to change. Without horizontal vibration of the car.

Next, when there is a concave bend in the car direction of the rail, if the electromagnetic force of the electromagnet is kept at an initial value, the guide will approach the rail due to the electromagnetic force of the electromagnet attracting the rail and the car Moves in the direction of the hoistway wall, but if the electromagnet weakens the electromagnetic force that attracts the rail, the force that compresses the elastic body of the guide that is in contact with the rail becomes weaker, and the elastic body extends and the horizontal direction of the car The position does not change and there is no lateral vibration of the car. In this way, even if the rail has irregularities, the guide member supporting member detects the displacement and controls the excitation strength of the electromagnet to maintain the predetermined horizontal position of the car.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory view of a car portion of an elevator equipped with the elevator guide device of the embodiment.

A car 2 that is suspended by a rope 1 and moves up and down is arranged along a pair of rails 3 made of magnetic steel for guiding, and on the upper and lower parts of the car with respect to the guide surface of each rail 3. A guide device 4 having one guider is attached.

The guide device 4 has a roller 5 as a guide and a tire 6 which is attached to the roller 5 and is in contact with the rail 3 by an elastic body. The guide support member 7 has an electromagnet 12A for attracting the rail 3. 12B is provided, and the guider support member 7 is provided.
Is pivotally supported on the guide base 8 by pins 9. Further, the guide device 4 includes a control device (not shown), that is, a sensor (not shown) that detects a displacement of the guider support member 7 due to a strain of the rail 3 when the car 2 moves up and down, and an electromagnet that eliminates the detected displacement. Excitation conditions of 12A and 12B, for example, a controller for controlling the direction and strength of current are provided. The guide support elastic body 10 that applies a rail pressing force to the guide is mounted between the guide support 8 and the guide support member 7 via the rod 11 fixed to the guide support 8. Fixed to.
In such a structure, when the tire 6 is compressed and deformed due to the bending of the rail 3, the guider support member 7 is pushed to the rope side so that the electromagnet 1 disposed on the guider support member 7 is prevented.
2A and 12B increase the attraction force to the rail 3, and conversely, when the tire 6 extends due to the bending of the rail 3 toward the hoistway, the guider support member 7 is attracted to the rail 3 side. By weakening the attraction force of the electromagnets 12A, 12B, the elastic force due to the bending of the rail 3 of the tire 6 can be canceled, and it can be prevented that it becomes an exciting force to the car. That is, the electromagnetic force can be controlled in order to absorb the elastic force of the tire of the guider generated by the bending of the rail 3 as an internal force between the guider support member 7 and the rail 3 while applying an initial attraction force to the electromagnets 12A and 12B. The present invention is a technical idea in which the electromagnets 12A and 12B are attached to the guider support member 7.

Incidentally, the electromagnets 12A and 12B arranged on the guide member support member 7 have a center of the roller 5 which is a guide member so as not to exert a couple force on the guide member support member 7 due to the reaction of the electromagnetic force. It is necessary to dispose a plurality of electromagnets near the portion so that the reaction of these electromagnets acts. If the electromagnet is arranged in the center of the roller 5, it is not necessary to arrange two electromagnets as shown in FIG.

FIG. 2 shows an explanatory view when a sliding type different from the roller type shown in FIG. 1 is used as the guide. That is, the guide is made up of a slider 13 in contact with the rail 3 and a rubber body 15 which constitutes a guide elastic body, and is fixed to the guide support member 7. Even in this structure, the guide member support member 7
By the electromagnets 12A and 12B arranged in the above, the same effect as that of the roller type guide is obtained.

In FIG. 3, the spring force for pressing the guide on the rail 3 is applied to the pin support portion 9 of the guide support member 7 to the guide base.
It is explanatory drawing of the Example comprised by the rotating spring 22 provided in the.

In the above embodiments, the attraction force of the electromagnets 12A and 12B is such that when the guide device 4 passes through the bent portion of the rail 3, in the embodiments of FIGS. It may be controlled so that the fluctuation force of deformation becomes small.
That is, by disposing a displacement sensor for detecting a fluctuating displacement of the guide support elastic body 10 or a pressure sensor for detecting a fluctuating force of elastic deformation of the guide support elastic body 10 at one of the end portions of the guide support elastic body 10, The attraction force of the electromagnet is controlled by the signals of these sensors.

In the embodiment shown in FIG. 3, the rotary spring 22 uses a torque sensor for detecting a torque fluctuation component of the rotary spring 22 or a rotation angle sensor for detecting a torsion angle fluctuation component.
The attraction force of the electromagnet may be controlled so that the fluctuation force of is small.

As a feedback signal when controlling the electromagnet,
In addition to the above-described detection signals of the sensors such as the voltage transformation and the load, a lateral vibration sensor may be provided in the car and the attraction force of the electromagnet may be controlled by this detection signal.

FIG. 4 is an explanatory view of the arrangement of rollers on the pair of rails 3a and 3b of the roller type guide device. The rails 3a and 3b are T-shaped in cross section, and the rollers on the rail surface 30c between the opposing rails 3a and 3b are arranged as shown in FIG. 1, but the other surfaces 30a and 30b are arranged on the rail 3a and 3b.
A pair of rollers 5a and 5b are provided for a and a pair of rollers 55a and 55b are provided for rail 3b.

FIG. 5 shows the narrowing roller 5a shown in FIG.
It is explanatory drawing of the Example with respect to 5b. The description of the reference numerals of the constituent parts is the same as that of FIG. 4 except for the subscripts a and b. In such a structure, when the guide passes through the bent portion 32 of the rail 3, the tire 6a is compressed and the tire 6b is expanded. As a result, the guider support spring 10a is compressed, 10b is expanded, the car 2 is excited in the direction of the arrow 34, and tends to receive lateral vibration. At this time, the electromagnets 12Aa, 12B
By increasing the rail attraction force of a and decreasing the rail attraction force of the electromagnets 12Ab and 12Bb, it is possible to prevent the guider support members 7a and 7b from being applied due to the fluctuation of the elastic force of the tires 6a and 6b. At this time, as described above, it is preferable to apply a constant initial attraction force to the electromagnet and apply an initial compression to the tires 6a and 6b. As shown in FIG. 6, this initial attraction force is generated by the permanent magnet 38 in a part of the yoke 36 of the magnetic field of the electromagnet.
Or the auxiliary coil 4 for generating the initial suction force independently of the main coil 40 for controlling the suction force as shown in FIG.
2 is provided in the coil portion of the electromagnet, and an initial attraction force can be generated by flowing a current corresponding to the initial attraction force in this coil. By providing the initial suction force in this way, simplification of the controller is achieved. Further, the unevenness of the rail surfaces 30a and 30b is generated by the bending of the rail 3, and if one surface is convex, the other surface is concave, and the forced displacements are made in opposite directions in synchronization with the rollers 5a and 5b. give. Therefore, in the case of a roller-type guide device that is arranged so as to sandwich the rail surface, the permanent magnet 38 described above is provided with the auxiliary coil 42 in the electromagnet portion, and the main coil 40 for control is provided.
Thus, when controlling the attraction force, if the winding direction of the main coil is selected so that the polarities of the magnetic poles of the main coil are opposite to each other, the electromagnets on the side of 30a and the magnets on the side of 30b are opposite to each other. By connecting the respective main coils in series, it is possible to use only one controller for the main coils on the side of 30a and the side of 30b. That is, 30a side and 30
When the main coil on the b side is connected in series and the current is controlled by the same controller, the attractive force of one electromagnet increases,
Since the attraction force of the other electromagnet is reduced, simplification of the control device is achieved, and attraction force control is synchronized and control accuracy is improved.

As described above, according to the present embodiment, the bending of the rail is subjected to forced vibration, and the elastic force of the elastic body of the guide of the guide of the guide device causes the transverse vibration of the car. , Its elastic force is prevented by canceling it by the attraction force between the guide member supporting member of the electromagnet and the rail, so that the riding comfort can be improved by speeding up the elevator, and the rail in the installation work of the elevator rail can be improved. Control of bending accuracy can be eased and construction can be rationalized.

[0024]

According to the present invention, when the guide of the guide device for the elevator car passes through the curved portion of the rail, the guide supporting member for supporting the guide is displaced, and means for detecting the displacement is provided. Lateral fluctuation due to bending of the rail that guides the car, because the electromagnet control means controls the excitation condition of the electromagnet that is located near the rail and detects the displacement, and eliminates the detected displacement. It is possible to provide an elevator in which a load component is prevented from being transmitted to a car and a comfortable ride is obtained.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a car part of an elevator including an elevator guide device according to an embodiment of the present invention.

FIG. 2 is an explanatory view when a sliding type is used as a guide according to the embodiment of the present invention.

FIG. 3 is an explanatory diagram of a configuration in which a guider support member according to an embodiment of the present invention is biased by a rotary spring.

FIG. 4 is an explanatory view of the arrangement of rollers of the roller guide device of the embodiment of the present invention.

FIG. 5 is an explanatory view showing another embodiment of the roller guide device of the present invention.

FIG. 6 is an explanatory view showing another embodiment of the electromagnet of the present invention.

FIG. 7 is an explanatory view showing another embodiment of the electromagnet of the present invention.

[Explanation of symbols]

Two baskets 3 rails 4 guidance device 5 roller 6 tires 7 Guide support member 8 information board 9 pin 10 Guide support elastic 12A electromagnet 12B electromagnet 13 Slider 15 Rubber body 22 Rotating spring 36 York 38 permanent magnet 40 main coil 42 Auxiliary coil

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tadashi Shibata             Hitachi, Ltd. 1070 Ige, Katsuta City, Ibaraki Prefecture             Factory Mito Factory (72) Inventor Yasukawara Jun             Hitachi, Ltd. 1070 Ige, Katsuta City, Ibaraki Prefecture             Factory Mito Factory (72) Inventor Ichiro Nakamura             502 Kintatemachi, Tsuchiura City, Ibaraki Japan             Tate Seisakusho Mechanical Research Center (72) Inventor Kiyoho Mimori             2 Hitachi 2 Mito, 832 Horiguchi, Katsuta City, Ibaraki Prefecture             Engineering Co., Ltd.

Claims (9)

[Claims] 1. An elevator comprising: opposed rails standing upright along a hoistway; and a guide device provided on a car to guide the car by contacting each of the rails, wherein the rail is made of a magnetic material. Consisting of at least 1
A pair of the guide devices, an elastic guider that contacts the rail, and a guide that supports the guider, is supported by the car, and urges the guider to contact the rail with a spring. A child support member, an electromagnet disposed on the guide piece support member in the vicinity of the rail, means for detecting displacement of the guide piece support member due to strain of the rail when the car is moved up and down, and detection by the means And an electromagnet control means for controlling the excitation condition of the electromagnet so as to eliminate the displacement. 2. An elevator guide device that guides a car by abutting on opposing rails standing up and down along a hoistway, and a guide that abuts on the rail and a car that supports the guide and supports the car. A guider support member that is supported and biases the guider with a spring so as to abut the rail, an electromagnet disposed in the guider support member in the vicinity of the rail, and when the car is moved up and down. An elevator guide apparatus comprising: a means for detecting the displacement of the guider supporting member due to the strain of the rail; and an electromagnet control means for controlling the excitation condition of the electromagnet so as to eliminate the displacement detected by the means. . 3. The elevator guide apparatus according to claim 2, wherein the guide is composed of a wheel supported by a rotary bearing on the guide support member and a tire mounted on an outer peripheral portion of the wheel. 4. The guider according to claim 2, wherein the guider comprises a slider that slides on the rail, and an elastic body in which the slider is attached to the guider support member. Elevator guidance device. 5. A spring for urging the guider support member,
The elevator guide device according to claim 2, wherein the elevator guide device is a coiled spring having one end abutting on the guide member supporting member and the other end abutting on the car. 6. A spring for urging the guider support member,
The elevator guide device according to claim 2 or 3, which is a spiral spring having one end fixed to the guide member support member and the other end fixed to the car and provided in a bearing portion of the guide member support member. . 7. The means for detecting the displacement of the guide piece support member is a rotation angle detector for detecting the rotation angle of the guide piece support member. The elevator guide device according to the paragraph. 8. The means for detecting the displacement of the guide piece support member is a torque detector for detecting the torque applied to the guide piece support member. The elevator guide device according to. 9. The elevator guide apparatus according to claim 1, wherein a permanent magnet or another auxiliary coil is provided in a part of a magnetic field yoke of the electromagnet.