JP5359181B2 - Elevator control cable device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control cable device of an elevator capable of precisely warming only a required portion even in a control cable long in the cable length, for preventing the control cable from interfering with a hoistway wall or a protective wire net by keeping the radius of a suspending loop equally to ordinary temperature time. <P>SOLUTION: This control cable device of the elevator has the control cable suspended in a hoistway by being connected to the hoistway wall and a car and having its suspending part presenting a substantially U shape, a fixed heater arranged in a position opposed to a part suspended along the hoistway wall of the control cable of the hoistway wall of a lower part of the hoistway, and a dynamic characteristic deterioration detecting means for detecting that its dynamic characteristic is deteriorated when a covering of the control cable is hardened, and is constituted so that the fixed heater is operated when detecting that is dynamic characteristic is deteriorated when the covering of the control cable is hardened by the dynamic characteristic deterioration detecting means. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an elevator control cable device.

  In conventional elevator control cable devices, when the temperature is low, such as in winter, the cable swells even when the car approaches the lowest floor by warming the cable cover and keeping the cover hardness the same as normal temperature. In order to prevent the cable from interfering with the hoistway wall and the protection wire net, the heater wire that warms the cable sheath is equipped with an elevator tail cord cable that is installed inside the entire length of the cable. Are known (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 11-071070

Usually, in an elevator, to operate equipment such as lighting, doors, ventilation fans and speakers attached to the car, the control panel for controlling the overall operation of the elevator and the car are electrically connected by a control cable, Electric signals are transmitted to the car via this control cable to control the operation of these devices.
This control cable is composed of a plurality of electric wires and a covering made of vinyl or the like covering the wires. The control cable is connected to a hoistway cable hanger provided on the hoistway wall and a car cable hanger provided on the lower surface of the car, and is suspended in the hoistway. It has a shape. Since the hardness (dynamic characteristics) of the coating changes depending on the temperature in the hoistway, the radius of curvature (the drooping loop radius) of the substantially U-shaped portion changes depending on the temperature in the hoistway.

In other words, when the temperature in the hoistway such as winter is around 0 ° C, the control cable cover becomes harder than room temperature (around 20 ° C), so the car gets closer to the lowest floor and the car cable hangers and the hanging loop part As the length of the control cable between is shortened, the droop loop radius of the control cable is increased. When the droop loop radius increases, the droop loop portion of the control cable swells to the hoistway wall side, and the protection wire mesh provided along the hoistway wall or the hoistway wall and the control cable may contact and interfere with each other. There is.
In addition, in order to eliminate such problems, considering that the hanging loop part of the control cable swells to the hoistway wall side when the inside of the hoistway is cold, the hoistway wall should be used as much as possible. It can be considered to be provided at a position away from the center. However, in this case, conversely, when the temperature in the hoistway such as summer rises, the cover of the control cable becomes soft, so that the car approaches the lowest floor and the cable between the car cable suspension and the hanging loop part. As the length of the control cable becomes shorter, the droop loop radius of the control cable becomes smaller. If the droop loop radius is reduced, another problem may occur that the control cable and the car contact and interfere with each other.

Therefore, in the conventional elevator control cable device disclosed in Patent Document 1, a heater wire for heating the cover of the control cable is provided inside the entire length of the control cable, and the temperature in the hoistway such as in winter is low. When the heater wire is energized as needed, the insulation is warmed, the insulation hardness is kept the same as at normal temperature, the drooping loop radius is kept equal to that at normal temperature, and the control cable is prevented from interfering with the hoistway wall and protective wire mesh. doing.
However, in the conventional elevator control cable device disclosed in Patent Document 1, since the heater wire is provided in the sheath of the control cable, there is a problem that the space for arranging the electric wire in the control cable is reduced, There is a problem that the structure becomes complicated. And when it is going to ensure sufficient space for arrange | positioning the electric wire in a control cable, there also exists the subject that a control cable becomes thick by the part of a heater wire.

In addition, in a high-range elevator installed in a high-rise building, etc., the length of the control cable becomes longer, so the heater wire becomes longer and the power consumption increases. The problem is that the efficiency is poor.
Furthermore, when it is going to apply the control cable apparatus shown by patent document 1 with respect to the existing elevator, it is necessary to replace | exchange a control cable and must resuspend a control cable in a hoistway, There is also a problem that the work is troublesome and a problem that a power source for heater wires must be prepared separately.

The present invention has been made to solve the above-described problems, and a first object is to maintain the drooping loop radius equal to that at room temperature and to prevent the control cable from interfering with the hoistway wall or the protective wire mesh. In order to prevent this problem, an elevator control cable device capable of accurately heating only necessary portions even with a control cable having a long cable length is obtained.
In addition, the second object is to warm the control cable covering without modifying the conventional general control cable according to the structure of the control cable itself. Therefore, the configuration of the control cable itself is simple. Thus, an elevator control cable device that can easily perform work when applied to an existing elevator without increasing the cable diameter is obtained.

In the control cable device for an elevator according to the present invention, the control cable connected to the hoistway wall and suspended from the hoistway and suspended in the hoistway, and the hanging portion of the control cable is substantially U-shaped, and the hoistway The fixed heater installed at a position of the lower hoistway wall facing the portion of the control cable suspended along the hoistway wall, and the covering of the control cable is hardened, and its dynamic characteristics deteriorate. Dynamic characteristic deterioration detecting means for detecting that the fixed heater is detected by the dynamic characteristic deterioration detecting means that the covering of the control cable is cured and the dynamic characteristic is deteriorated. The dynamic characteristic deterioration detecting means is provided in the hoistway wall below the fixed heater, and the contact of the control cable swelled toward the hoistway wall side due to the deterioration of the dynamic characteristic. Detect And a detection switch configurations.

  Moreover, in another form of the elevator control cable device according to the present invention, the control cable is connected to the hoistway wall and suspended in the hoistway and suspended in the hoistway, and the hanging part has a substantially U-shape. And a movable heater that is provided at an intermediate portion in the hoistway and that warms the cover of the control cable while slidably holding the control cable, and the movable heater using the movable heater A use position that is arranged when heating the coating, and a storage position that is arranged at a position along the hoistway wall so that the movable heater does not interfere with the operation of the elevator when the movable heater is not used. A movable support means for moving the gap between the movable cable, and a dynamic characteristic deterioration detecting means for detecting that the dynamic characteristic of the control cable has hardened and is deteriorated. Heater, the coating is cured of the control cable by the dynamic characteristic deterioration detecting means, if the dynamic characteristics are detected to have deteriorated, and configured to be actuated.

The present invention relates to a control cable device for an elevator, which is connected to a hoistway wall and suspended in a hoistway, the control cable having a substantially U-shaped hanging portion, and a lower part of the hoistway. The fixed heater installed at the position of the hoistway wall facing the portion of the control cable suspended along the hoistway wall, and the covering of the control cable hardened, and its dynamic characteristics deteriorated. The fixed heater is detected when the dynamic characteristic deterioration detecting unit detects that the covering of the control cable has hardened and the dynamic characteristic has deteriorated. The dynamic characteristic deterioration detecting means that is actuated is provided on the hoistway wall below the fixed heater, and detects the contact of the control cable swelled to the hoistway wall side due to the deterioration of the dynamic characteristic. detection By having a configuration which is switch, in order to control cables keeping the hanging loop radius normal temperature equal to prevented from interfering in the hoistway walls and protective wire net, a long control cable of cable length Also, there is an effect that only necessary portions can be heated accurately.
In addition, the cover of the control cable can be warmed without changing the conventional control cable according to the structure of the control cable itself. For this reason, the configuration of the control cable itself is simple and the cable diameter is large. In addition, there is an effect that it is possible to easily perform work when applied to an existing elevator.

  In another form of the elevator control cable device according to the present invention, a control cable connected to the hoistway wall and suspended in the hoistway and suspended in the hoistway, and a hanging portion of the control cable having a substantially U-shape; A movable heater that is provided in an intermediate portion in the hoistway and that heats the cover of the control cable while slidably holding the control cable; and the movable heater is formed by using the movable heater. Between the use position disposed when warming the heater and the storage position disposed at a position along the hoistway wall so that the movable heater does not interfere with the operation of the elevator when the movable heater is not used. A movable support means for supporting the movable cable, and a dynamic characteristic deterioration detecting means for detecting that the dynamic characteristic of the control cable is hardened and the dynamic characteristic is deteriorated. The above-mentioned effect is the same as that described above, because the motor is activated when the dynamic characteristic deterioration detecting means detects that the covering of the control cable has hardened and the dynamic characteristic has deteriorated. Can be played.

  The present invention will be described with reference to the accompanying drawings. Throughout the drawings, the same reference numerals indicate the same or corresponding parts, and the overlapping description is simplified or omitted as appropriate.

Embodiment 1 FIG.
FIG. 1 relates to Embodiment 1 of the present invention and is a diagram schematically showing a cross section of an elevator hoistway.
In the figure, reference numeral 1 denotes a hoistway standing in a building where an elevator is installed, and a car 2 is disposed in the hoistway 1 so as to be movable up and down. A machine room (not shown) is provided above the hoistway 1, and a control panel 3 for controlling the overall operation of the elevator is installed in the machine room.
The car 2 is electrically connected to the control panel 3 by a control cable 4, and the control cable 4 has a hoistway cable handle 5 provided at one end on the hoistway wall in the hoistway 1. Further, the other end side is connected to a car cable suspension 6 provided on the lower surface of the car 2, and is suspended in the hoistway 1.

The drooping portion of the control cable 4 has a substantially U shape, and the hardness (dynamic characteristics) of the sheath changes depending on the temperature in the hoistway. ) Varies depending on the temperature in the hoistway.
That is, when the inside of the hoistway 1 is at a high temperature, the covering of the control cable 4 is softened, so that the drooping loop radius is reduced. On the other hand, when the inside of the hoistway 1 is at a low temperature, the covering of the control cable 4 is cured and the dynamic characteristics are deteriorated, so that the drooping loop radius is increased. Such a change in the drooping loop radius is caused by the fact that the length of the control cable 4 between the car cable suspension 6 and the drooping loop portion is shortened as the car 2 approaches the lowest floor. It is remarkable in the case.

Since one end of the control cable 4 is connected to the hoistway cable suspension provided on the hoistway wall 1a, a part of the control cable 4 is suspended along the hoistway wall 1a. .
And in the lower part of the hoistway wall, particularly in the lower part of the hoistway 1, in order to warm the covering of the control cable 4 at a position facing the portion of the control cable 4 suspended along the hoistway wall. The fixed heater 7a is installed.
A temperature sensor 8 that measures the temperature of the lower part of the hoistway 1 and detects that the measured temperature is lower than a predetermined reference temperature is provided at the lower part of the hoistway 1. Information on the temperature inside the hoistway 1 measured by the temperature sensor 8 is sent to a heater control device 9 that controls the operation of the fixed heater 7a.

A detection switch 10 is provided on the hoistway wall below the fixed heater 7a. In the detection switch 10, the temperature of the hoistway 1 is lowered, the coating of the control cable 4 is cured, and the drooping loop radius is increased. The control cable 4 is arranged so as to come into contact with the control cable 4 when it swells to the wall side. That is, when the control cable 4 has good dynamic characteristics and the hanging loop portion of the control cable 4 does not bulge to the hoistway wall side, the control cable 4 and the detection switch 10 are in contact with each other. Arranged not to.
When the detection switch 10 detects that the control cable 4 is in contact with the detection switch 10, a detection signal to that effect is sent to the heater control device 9.
The temperature sensor 8 and the detection switch 10 constitute a dynamic characteristic deterioration detection unit that detects that the dynamic characteristic of the control cable 4 has deteriorated, and the heater control device 9 determines the detection result of the dynamic characteristic deterioration detection unit. Based on this, the operation of the fixed heater 7a is controlled.

In the elevator control cable device configured as described above, at the normal time, that is, when the temperature sensor 8 detects that the lower part in the hoistway 1 is not lower than the reference temperature, the heater Under the control of the control device 9, the fixed heater 7a does not operate.
On the other hand, when the temperature sensor 8 detects that the lower part of the hoistway 1 is lower than the reference temperature, the fixed heater 7a is operated under the control of the heater control device 9. Moreover, since the inside of the hoistway 1 becomes low temperature, the covering of the control cable 4 is hardened and the dynamic characteristics are deteriorated, so that the drooping loop radius is increased. When the drooping loop radius is increased, the drooping loop portion of the control cable 4 swells toward the hoistway wall and contacts the fixed heater 7a.

  Thus, the portion of the hanging loop portion of the control cable 4 that is hardened due to the coating being hardened and the drooping loop radius is increased and bulges toward the hoistway wall side is fixed to the fixed heater 7a. Heated in contact with. When the covering heater is softened sufficiently by the fixed heater 7a and the dynamic characteristics are improved, the drooping loop radius of the portion where the dynamic characteristics are improved becomes small. If the drooping loop radius is reduced, the control cable 4 is separated from the hoistway wall, that is, the fixed heater 7a, so that the control cable 4 is not excessively heated by the fixed heater 7a.

In the above, the case where the temperature sensor 8 detects that the lower part in the hoistway 1 is lower than the reference temperature has been described. However, the inner part of the hoistway 1 is detected by the temperature sensor 8. Even if it is not detected that the temperature is lower than the temperature, the detection switch 10 causes the hanging loop portion of the control cable 4 to swell toward the hoistway wall, causing interference or the like. In the same manner, the covering of the control cable 4 can be similarly warmed by the fixed heater 7a to improve the dynamic characteristics, and the drooping loop radius can be reduced.
That is, when the inside of the hoistway 1 becomes low temperature and the dynamic characteristics of the control cable 4 deteriorates and the drooping loop radius increases, the drooping loop portion of the control cable 4 expands toward the hoistway wall side. Then, the control cable swelled toward the hoistway wall contacts the detection switch 10. When the detection switch 10 detects this contact, the fixed heater 7a is operated under the control of the heater control device 9 to warm the covering of the control cable 4. The subsequent operation is the same as the case where the temperature sensor 8 detects that the lower part of the hoistway 1 is lower than the reference temperature.

Further, as a condition for operating the fixed heater 7a, not only the detection result of the temperature sensor 8 and the detection switch 10, but also the position of the car 2 in the hoistway 1 is considered more efficiently. The control cable 4 can be warmed to improve its dynamic characteristics.
That is, for example, the change of the droop loop radius is caused by the fact that the length of the control cable 4 between the car cable suspension 6 and the droop loop portion is shortened especially when the car 2 approaches the lowest floor. In consideration of this, the fixed heater 7a is operated only when the car 2 is located at the lower part of the hoistway 1, particularly near the lowest floor. It is conceivable to make it warm.

In the elevator control cable apparatus configured as described above, when the cable covering is cured by the dynamic characteristic deterioration detecting means and the dynamic characteristic is detected to be deteriorated, the hoistway below the hoistway is detected. By operating a fixed heater installed at a position facing the part of the wall that suspends along the hoistway wall of the control cable, the control cable can be kept at the same temperature as the normal loop radius. In order to prevent interference with the hoistway wall and the protective wire net, even a control cable having a long cable length can be warmed only at a necessary portion.
In addition, the cover of the control cable can be warmed without changing the conventional control cable according to the structure of the control cable itself. For this reason, the configuration of the control cable itself is simple and the cable diameter is large. The work in the case of applying to an existing elevator can be easily performed.

In addition, the control cable which has good dynamic characteristics and hangs substantially vertically in the hoistway does not come into contact with the fixed heater, but the dynamic characteristics deteriorate and the control cable swells to the hoistway wall side. By placing it at a position where it comes into contact, it is possible to effectively warm only the part where the coating has hardened and the dynamic characteristics have deteriorated, and when the coating is warmed to soften the coating and improve the dynamic characteristics, Since the portion where the improvement is made is separated from the fixed heater by gravity, the control cable is not excessively heated by the fixed heater.
And it is possible to extend the life of the control cable by preventing the control cable from interfering with the hoistway wall and the protective wire net in this way.

Embodiment 2. FIG.
FIG. 2 relates to Embodiment 2 of the present invention and is a diagram schematically showing a cross section of an elevator hoistway.
In the first embodiment described above, the control cable cured by the fixed heater provided fixed to the hoistway wall below the hoistway is heated to improve its dynamic characteristics, which will be described here. In the second embodiment, a movable heater is provided in the middle part of the hoistway, and a desired position of the control cable is heated by this movable heater to improve its dynamic characteristics.
That is, a movable heater 7b is provided at an intermediate portion in the hoistway 1, and when the movable heater 7b is used to warm the control cable 4, the use position where the movable heater 7b is disposed and the movable heater 7b. When the heater 7b is not used, the movable heater 7b is provided so as to be movable between a storage position arranged at a position along the hoistway wall so as not to hinder the operation of the elevator. .

More specifically, the movable heater 7b is supported by a rod-shaped heater support portion 7c, and the movable heater 7b is attached to one end of the heater support portion 7c, and the other end of the heater support portion 7c is raised and lowered. It is attached to a movable part 7d provided at a fixed position on the hoistway wall in the middle part of the road 1.
The movable portion 7d pivotally supports the heater support portion 7c, and the other end portion of the heater support portion 7c is connected to the movable portion 7d by a rotation driving means such as a motor (not shown). By rotating the heater support portion 7c as an axis, the movable heater 7b attached to one end of the heater support portion 7c is moved between the use position and the storage position.
The heater support portion 7c, the movable portion 7d and the rotation drive means thus provided constitute a movable support means.

Further, the heater portion of the movable heater 7b has a substantially U-shaped cross section, and the cover of the control cable 4 can be warmed while the control cable 4 is slidably held in the U-shaped portion.
Except for the point that the movable heater 7b is provided instead of the fixed heater 7a, the other configuration is substantially the same as that of the first embodiment. A temperature sensor 8 that detects that the measured temperature is lower than a predetermined reference temperature, a detection switch 10 that detects contact by the control cable 4 bulging toward the hoistway wall side, and the like. Provided.
However, in the second embodiment, the heater control device provided in the first embodiment is not provided, but instead based on the detection results of these temperature sensors 8 and detection switches 10 by the control panel 3 which is a control means. Then, the operation of the movable heater 7b is controlled.

In the elevator control cable device configured as described above, in normal times, that is, when the temperature sensor 8 does not detect that the lower part of the hoistway 1 is lower than the reference temperature, or the detection switch 10 When it is not detected that the hanging loop portion of the control cable 4 bulges to the hoistway wall side and is in contact with the detection switch 10, the movable heater 7b is in the storage position and the elevator Will continue normal operation.
On the other hand, when the temperature sensor 8 detects that the lower part of the hoistway 1 is lower than the reference temperature, or the detection switch 10 causes the hanging loop part of the control cable 4 to move the hoistway wall. When it is detected that it is swollen to the side and is in contact with the detection switch 10, the elevator shifts to a dynamic characteristic improving operation under the control of the control panel 3 (control means).

In this dynamic characteristic improving operation, first, the control panel 3 determines whether or not the elevator is in a quiet period, that is, whether or not a condition such as a passenger not using the elevator for a predetermined time or more is satisfied. Judgment is made.
When it is determined that the elevator is in a quiet period, the control board 3 controls the car 2 to move slightly above the installation position of the movable heater 7b and stops there. Subsequently, the movable portion 7d is moved by the rotation driving means, and the movable heater 7b is disposed at the use position. In the state where the movable heater 7b is disposed at the use position, the control cable 4 is slidably held by the U-shaped heater portion.

In this state, by operating the movable heater 7b under the control of the control panel 3, the covering of the portion of the control cable 4 sandwiched between the movable heaters 7b is warmed. Then, by appropriately moving the car 2 up and down, the covering of the hanging loop portion of the control cable 4 when the car 2 is positioned below the hoistway 1 is cured and moved. The coating can be warmed on the portion where the characteristics deteriorate and the radius of the drooping loop becomes larger and swells toward the hoistway wall side.
In this way, when the movable heater 7b is sufficiently warmed to soften the coating and improve the dynamic characteristics, and to reduce the drooping loop radius, the movable heater 7b is now moved in the reverse order. The elevator is placed in the storage position, and the elevator is returned to normal operation.

  In the elevator control cable device configured as described above, a movable heater provided at an intermediate portion in the hoistway for warming the cover of the control cable while slidably holding the control cable is provided with a movable heater. Between the use position that is placed when the coating is heated and the storage position that is placed along the hoistway wall so that the movable heater does not interfere with the operation of the elevator when the movable heater is not used. The movable heater is disposed in the storage position in a normal state, and the dynamic characteristic deterioration detecting means detects that the control cable has hardened and the dynamic characteristic has deteriorated. In such a case, move the car to above the position where the movable heater is installed, place the movable heater in the working position and operate it. By controlling so as to warm the covering, it is possible to obtain the same effect as in the first embodiment.

It is a figure which shows typically the cross section of the hoistway of the elevator in Embodiment 1 of this invention. It is a figure which shows typically the cross section of the hoistway of the elevator in Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Passenger car 3 Control panel 4 Control cable 5 Hoistway cable hanger 6 Car cable hanger 7a Fixed heater 7b Movable heater 7c Heater support part 7d Movable part 8 Temperature sensor 9 Heater control apparatus 10 Detection switch

Claims (6)

A control cable connected to the hoistway wall and suspended from the hoistway and suspended in the hoistway, the hanging part of which is substantially U-shaped;
A fixed heater installed at a position facing the portion of the control cable suspended along the hoistway wall of the hoistway wall at the lower part of the hoistway;
Dynamic characteristic deterioration detecting means for detecting that the covering of the control cable is cured and its dynamic characteristic is deteriorated, and
The fixed heater is actuated when it is detected by the dynamic characteristic deterioration detecting means that the covering of the control cable is cured and the dynamic characteristic is deteriorated ,
The dynamic characteristic deterioration detecting means is a detection switch that is provided on the hoistway wall below the fixed heater and detects contact of the control cable that has deteriorated dynamic characteristics and has expanded toward the hoistway wall side. An elevator control cable device.   2. The elevator control cable device according to claim 1, wherein the fixed heater is disposed at a position where the control cable swells toward the hoistway wall side due to deterioration of dynamic characteristics. A control cable connected to the hoistway wall and suspended from the hoistway and suspended in the hoistway, the hanging part of which is substantially U-shaped;
A movable heater that is provided at an intermediate portion in the hoistway and that heats the cover of the control cable while slidably holding the control cable;
The use position where the movable heater is disposed when the covering is heated using the movable heater, and the ascending / descending operation so that the movable heater does not interfere with the operation of the elevator when the movable heater is not used. A storage position that is disposed at a position along the road wall; and a movable support means that supports the movable position between the storage position,
Dynamic characteristic deterioration detecting means for detecting that the covering of the control cable is cured and its dynamic characteristic is deteriorated, and
The movable heater is actuated when it is detected by the dynamic characteristic deterioration detecting means that the coating of the control cable is cured and the dynamic characteristic is deteriorated, and the elevator control cable is operated. apparatus. In the normal time, the movable heater is arranged at the storage position,
When it is detected by the dynamic characteristic deterioration detecting means that the covering of the control cable is cured and the dynamic characteristic is deteriorated, the car is moved above the position where the movable heater is installed. 4. The control cable device for an elevator according to claim 3, further comprising control means for controlling the movable heater to be disposed and operated at the use position so as to warm the covering of the control cable. The dynamic characteristic deterioration detecting means is a temperature sensor that is provided at a lower part in the hoistway and detects that the lower part in the hoistway has become a temperature lower than a predetermined reference temperature. 3 or elevator control cable device according to any one of claims 4. The dynamic characteristic deterioration detecting means is provided in the front Symbol hoistway walls, characterized in that it is a detection switch for detecting the contact of the control cable swollen dynamic characteristics is deteriorated to the hoistway wall according elevator control cable according to any one of claims 3 or claim 4.

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