JPH0597350A - Transfer cable device for elevator - Google Patents

Abstract

PURPOSE:To obtain a transfer cable device for an elevator in which the swing in the direction along a suspension line connecting the suspension parts of the transfer cable is little. CONSTITUTION:A controller far energizing a shift mechanism 12 for shifting a suspension body 14 in the horizontal direction along the suspension line 31 of a transfer cable 3, in the reverse direction according to the shift quantity of the suspension body 14 through a detecting mechanism 15 is installed. The swing of the shift cable 3 in the direction along the suspension line 31 is suppressed by offset-operating the suspension body 14 according to the swing of the shift cable 3. Further, the initial value of the detecting mechanism 15 is set according to the position of an elevator body 2, a set time, etc. Accordingly, the trouble due to the swing of the shift cable is prevented, and the swing suppressing action is stabilized by eliminating the accumulative error, etc., of the output value by the proper initial value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving cable device for an elevator suspended between a hoistway and a lifting body.

[0002]

2. Description of the Related Art FIG. 5 is a conceptual view showing a conventional moving cable device for an elevator disclosed in Japanese Patent Laid-Open No. 3-79579. In the figure, 1 is a hoistway, 2 is an elevator body consisting of a car, 3 is a flat movement cable provided with steel cords 4 and 5, 6 is a connection box provided in the hoistway 1 and the elevator body 2, 7 Is a swing support mechanism of the lifting body 2,
8 is a swing support mechanism of the hoistway 1, 9 is a swing support mechanism 7, 8
Is a tilt angle detector provided on each of the swing support mechanisms 7 and 8, and 11 is an arm that corresponds to the tilt angle detector 10 and tilts according to the behavior of the moving cable 3.

The conventional moving cable device for an elevator is constructed as described above, and when the hoistway 1 rolls due to strong wind or the like, the moving cable 3 shakes. At this time, the swing support mechanisms 7 and 8 that suspend the ends of the moving cable 3 are dragged by the moving cable 3 and are displaced in the horizontal direction. Then, the displacement of the moving cable 3 lags behind the displacement of the swing support mechanisms 7 and 8 due to frictional resistance and inertial resistance,
The inclination angle detector 10 detects this delay as the inclination of the arm 11.

[0004]

The conventional moving cable device for an elevator as described above is constructed as described above, and the swing inclination angle becomes zero in accordance with the inclination angle detected by the inclination angle detector 10. The swing support mechanisms 7 and 8 are driven to apparently displace in accordance with the swing direction of the moving cable 3.
As a result, the accumulation of vibration and resonance of the moving cable 3 are suppressed. However, the moving cable 3 is provided with flexibility so that it can be easily bent at the hanging portion because it is necessary to follow up and down movements of the lifting body 2. Therefore, once a disturbance acts on the moving cable 3 having a flat cross section in the direction along the suspension line connecting the suspension parts of both the hoistway 1 and the elevating body 2, it easily shakes horizontally, and also local shakes occur. Is also likely to occur. Furthermore, since the local vibrations become waves and propagate to the end of the moving cable 3, the response by the tilt angle detected by the tilt angle detector 10 does not necessarily capture the true vibration of the entire moving cable 3. Not exclusively. Therefore, there is a problem in that the mobile cable 3 may erroneously respond to an inclination due to a local shake of the moving cable 3 to promote the shake. Since the moving cable 3 has a flat cross section, the rigidity thereof in the direction orthogonal to the suspension line is large, and the swing becomes large in the direction along the suspension line.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a moving cable device for an elevator in which the swing of the moving cable along the suspension line is small.

[0006]

SUMMARY OF THE INVENTION In a moving cable device for an elevator according to the present invention, the hanging parts of the lifting body and the hanging parts of the hoisting part of the hoistway are moved horizontally along the hanging line of the moving cable. A displacement mechanism that displaces, a detection mechanism that generates an output according to the displacement amount of the suspension body, and a control device that biases the displacement mechanism in a direction opposite to the output value of the detection mechanism are provided.

[0007]

In the elevator moving cable device configured as described above, the displacement mechanism is biased in the direction opposite to the output value of the detection mechanism corresponding to the displacement amount of the suspension due to the swing of the moving cable, and the suspension mechanism is suspended. The holding body offsets the output value.

[0008]

【Example】

Example 1. 1 to 3 are views showing an embodiment of the present invention, in which the same reference numerals as those in FIG. 5 indicate corresponding parts, and 12 are respectively provided in the hoisting portions of the hoistway 1 and the hoisting body 2. The displacement mechanism including an actuator supports the suspension body 14 with which the end portion of the movement cable 3 is engaged together with the guide shaft 13, and the suspension body 14 is urged to move the suspension body 14 to the suspension line 3 of the movement cable 3.
Displace in the horizontal direction along 1. Reference numeral 15 is a detection mechanism that generates an output according to the amount of displacement of the suspension 14, and 16 is a control device that issues a command to urge the displacement mechanism 12 in the opposite direction to the output value of the detection mechanism 15.

In the moving cable device for an elevator constructed as described above, when the hoistway 1 rolls laterally, the swing propagates to the hoisting portion of the hoistway 1 and the lifting body 2. When the suspension 14 is displaced in the direction along the suspension line 31 in such a case, the displacement mechanism 12 operates in the direction opposite to the output value of the detection mechanism 15 at this time by a command from the control device 16. For this reason, the movement of the suspension body 14 against lateral vibration is offset, and the swinging of the moving cable 3 in the direction along the suspension line 31 is suppressed without causing a malfunction. Therefore, it is possible to prevent occurrence of an accident due to the swing of the moving cable 3.

Embodiment 2. FIG. 4 is a view for explaining a shaking condition of a building according to another embodiment of the present invention. In the drawing, 17 is a building provided with a hoistway 1, and the building 17 is shown by a solid line in FIG. 4 when there is no wind. Standing upright. When the wind is strong, it swings as shown by the broken line. Then, since the detection mechanism 15 constantly generates the output value, in the long term, minute detection errors are accumulated and the zero point of the output value is displaced. Therefore, the operation of the displacement mechanism 12 according to the command of the control device 16 becomes inaccurate, and the moving cable 3 may swing.

On the other hand, by setting the output value of the detection mechanism 15 as the initial value of the displacement when the elevator 2 is located at the lowermost portion of the hoistway 1 with less lateral sway, good swinging of the moving cable 3 is possible. A suppressive effect is obtained. Further, the average output value of the detection mechanism 15 for a predetermined time, for example, 10 minutes with respect to the shaking of the building 17, is set as the initial value of the displacement. In this case, the rolling of the building 17 due to a strong wind or the like is not necessarily symmetrical with respect to the upright axis, but if the average displacement for a predetermined time is set as the initial value, it will be based on the median of the shaking, and the minimum displacement mechanism With the urging force of 12, a good swing suppressing effect of the moving cable 3 can be obtained. The detection mechanism 15 is effectively configured to generate, for example, the twice-integrated value of the acceleration detector output value as an output. However, the configuration is not necessarily limited to this.

[0012]

As described above, according to the present invention, the displacement mechanism for displacing the lifting body and the lifting body of the lifting portion of the hoistway in the horizontal direction along the suspension line of the moving cable, and the lifting mechanism of the lifting body. A detection mechanism that generates an output according to the displacement amount and a control device that urges the displacement mechanism in a direction opposite to the output value of the detection mechanism are provided. Then, the displacement mechanism is biased in the opposite direction via the control device to the output value of the detection mechanism according to the displacement amount of the suspension caused by the swing of the moving cable, and the suspension is offset by the output value. , The swing of the moving cable in the direction along the suspension line is suppressed. As a result, the effect of preventing the occurrence of an accident due to the swing of the moving cable can be obtained. Further, by appropriately setting the initial value of the detection mechanism, the effect of eliminating the accumulated error of the output value and stably suppressing the swing of the moving cable for a long period of time can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view conceptually showing one embodiment of the present invention.

FIG. 2 is an enlarged view of a hoistway side suspension portion of FIG.

FIG. 3 is an enlarged view of a lifting portion side lifting portion of FIG.

FIG. 4 is a diagram for explaining a shaking condition of a building according to another embodiment of the present invention.

FIG. 5 is a view corresponding to FIG. 1 showing a conventional moving cable device for an elevator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hoistway 2 Elevating body 3 Moving cable 12 Displacement mechanism 14 Suspended body 15 Detection mechanism 16 Control device 31 Suspended wire

Claims (3)

[Claims] 1. A suspension part of an elevator provided in a hoistway has one end disposed to form a drooping curved portion, and the other end disposed in the suspension part of the hoistway to hold both of the suspension parts. A moving cable arranged to form a suspension line connecting the holding portions, a suspension body provided on the suspension portion and suspending the end portion of the movement cable, and a suspension body provided on the suspension portion. A displacement mechanism that horizontally displaces the suspension body along the suspension line, a detection mechanism that generates an output according to the amount of displacement of the suspension body, and the displacement mechanism in the direction opposite to the output value of the detection mechanism. A moving cable device for an elevator, comprising: a control device that biases the suspension body to cancel the suspension with respect to the output value. 2. The moving cable device for an elevator according to claim 1, wherein the output value of the detection mechanism when the lifting body stops at a predetermined position at the lower end of the hoistway is the initial value of the displacement. 3. The moving cable device for an elevator according to claim 1, wherein an average output value of the detection mechanism in a predetermined time is used as an initial value of the displacement.