JPH0753155A - Car swing detecting device for elevator - Google Patents

Abstract

PURPOSE:To prevent the erroneous operation of a speed governor due to the swing of a car and prevent the generation of the confined trouble through the erroneous operation of the speed governor. CONSTITUTION:An operating piece 21 is installed on the rod 12 of a vibration suppressing device 9 for a speed governor rope 8, and an automatic return type detection switch 22 which is operated by the operating piece 21 is installed on a car 4, and when the speed governor rope 8 is shifted over a set value by the swing of the car, the detection switch 22 operates, and a detection relay 25 transmits a signal, and an alarm buzzer 31 operates, and a control circuit 32 stops the car 4 temporarily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a car shake detecting device for an elevator, which detects a shake of a car due to mischief of passengers.

[0002]

2. Description of the Related Art FIG. 2 is a schematic diagram showing an example of a conventional elevator. In the figure, 1 is a sheave of a hoisting machine installed in a machine room at the upper part of a hoistway, 2 is a warping wheel installed in parallel with the hoisting machine, and 3 is a hoisting wheel 1 and a warping wheel 2. The main ropes 4, 4 are cages suspended from one end of the main ropes 3, and are a car room 4a and a car frame 4b.
And have. Reference numeral 5 is a counterweight suspended on the other end of the main rope 3.

Reference numeral 6 is a speed governor installed in the machine room, 7 is a speed governor rope tensioning wheel installed in the lower part of the hoistway, and 8 is a speed governor 6 and a speed governor rope tensioning wheel 7. The speed governor rope is wound around, and 9 is a vibration suppressing device (vibration suppressing section) attached to the car frame 4b and connected to both ends of the speed governor rope 8.

FIG. 3 is an enlarged view of the vibration suppressing device 9 shown in FIG. 2, which is similar to that shown in Japanese Utility Model Laid-Open No. 54-112276, for example. In the figure, 1
1 is a mounting arm fixed to the car frame 4b and extending in the horizontal direction, 12 is a rod penetrating the tip end of the mounting arm 11 slidably in the car elevating direction.
Upper and lower stoppers 12a and 12b for restricting the sliding stroke are provided. Further, speed governor ropes 8 are connected to the upper and lower ends of the rod 12, respectively.

Reference numerals 13 and 14 denote spring receiving seats fixed to the upper and lower sides of the mounting arm 11 of the rod 12, respectively, and 15 and 16 are provided between the spring receiving seats 13 and 14 and the mounting arm 11, respectively. The damping spring 17 that is provided is an emergency stop lever that is provided so as to be rotatable with respect to the mounting arm 11. In addition, 18 is a nut, 19 is a governor rope 8
It is a rod terminal for connection.

Next, the operation will be described. Normally, when the car 4 is running, the mounting arm 11 fixed to the car frame 4b is pressed by the vibration damping springs 15 and 16 from above and below with the same spring pressure, so that the vibration suppressing device 9 operates as shown in FIG. It is stationary with respect to the car 4 in the state of. That is, the normal vibration during traveling of the car 4 is absorbed by the vibration suppressing device 9. Further, when the descending speed of the car 4 increases abnormally, the governor rope 8 is restrained by the governor 6, so that the mounting arm 1
1 moves downward with respect to the rod 12 against the vibration damping springs 15 and 16 in FIG. As a result, the emergency stop lever 1
7 rotates, a connecting rod (not shown) connected thereto is pulled up, and an emergency stop device (not shown) provided at the bottom of the car 4 operates to stop the car 4 in an emergency.

[0007]

In the conventional elevator constructed as described above, when a passenger mischieves and intentionally shakes the car 4 while traveling, the speed governor directly connected to the car frame 4b. The sway is transmitted to the rope 8. At this time, the damping springs 15 and 16 alternately expand and contract, and the relative speed of the governor rope 8 with respect to the car 4 changes as shown in FIG. If the traveling speed curve of the car 4 is shown in FIG. 5, the speed of the speed governor rope 8 detected by the speed governor 6 changes as shown in FIG. 6 which is a combination of FIG. 4 and FIG. In FIG. 6, the portion exceeding the broken line showing the actual traveling speed of the car 4 is the excess speed due to the shaking of the car 4. In such a case, the speed governor 6 operates by determining that the speed governor rope 8 is accelerating faster than the actual speed, the car 4 is unnecessarily emergency stopped, and it takes time to restart the operation. At the same time, there is a problem that passengers may be trapped in the car 4.

The present invention has been made to solve the above-mentioned problems, and it is possible to detect a sway of a car and prevent malfunction of the speed governor due to sway of the car. It is an object of the present invention to obtain a car shake detection device for an elevator that can prevent the car from being trapped in the car.

[0009]

According to a first aspect of the present invention, there is provided an elevator car sway detection device provided with a detection circuit for issuing a signal when the amount of vibration of a speed governor rope due to car sway exceeds a set value. It is a thing.

An elevator car sway detection device according to a second aspect of the present invention includes an alarm device for issuing an alarm to at least one of a car and an elevator control room in response to a signal from a detection circuit.

The elevator car sway detection apparatus according to the third aspect of the present invention is provided with display means for displaying on the car operation panel in response to a signal from the detection circuit.

An elevator car sway detecting apparatus according to a fourth aspect of the present invention is provided with a control circuit for stopping the car at the nearest floor in response to a signal from the detecting circuit.

According to a fifth aspect of the present invention, there is provided an elevator car sway detecting device, wherein the detection circuit is provided with an automatic restoration type detection switch, and the car is temporarily stopped in response to a signal from the detection circuit. It is provided with a control circuit that automatically restarts the operation when automatically returning.

According to a sixth aspect of the present invention, there is provided an elevator car swaying detection device which outputs an alarm to a signal from the detection circuit and an alarm device which gives an alarm to at least one of the car and the elevator control room in response to the signal from the detection circuit. Accordingly, a control circuit for returning the car to a specific floor set in advance is provided.

[0015]

In the present invention, when the car shakes, the vibration is transmitted to the speed governor rope attached to the car.
The displacement of the governor rope due to this vibration is monitored, and when the amount of vibration exceeds a set value, a detection circuit issues a signal to detect car sway and prevent malfunction of the governor.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing a car shake detecting device according to an embodiment of the present invention. The same or corresponding portions as those in FIG. 3 are designated by the same reference numerals and the description thereof will be omitted.

In the figure, reference numeral 21 is an operating piece fixed to the rod end 19 portion of the upper end portion of the rod 12 by a nut 18, and 22 is a detection switch mounted on the car 4, for example, an automatic reset type micro switch. Is used. Reference numeral 23 denotes a base end portion which is rotatably provided on the detection switch 22 and has a distal end portion with a space K between them.
Is a control lever for operating the detection switch 22, and 24 is a detection relay connected to the detection switch 22. The detection relay 24 controls the operation of the alarm buzzer 31 as an alarm device and the elevator. It is connected to the control circuit 32. Reference numeral 25 includes a detection switch 22 and a detection relay 24. The configuration of the elevator as a whole is almost the same as in FIG.

Next, the operation will be described. During normal operation, the mounting arm 11 is pressed by the damping springs 15 and 16 from above and below with the same spring pressure as in the conventional case, so that the vibration suppressing device 9 is stationary with respect to the car 4. Also, basket 4
When the descending speed of is abnormally increased, the governor rope 8 is restrained by the governor 6, and the emergency stop device operates to cause the car 4 to make an emergency stop.

Further, during normal operation, when the car 4 is greatly shaken due to a mischief of a passenger, the rod 12 vibrates vertically with respect to the mounting arm 11, and the damping springs 15 and 16 alternately expand and contract. Then, when the rod 12 moves upward, the interval K between the operating piece 21 and the operating lever 23 becomes short. When the swing of the car 4 is larger than the set amount, the operating piece 23 contacts the operating lever 22. As a result, the detection relay 24 operates, the alarm buzzer of the car 4 or the elevator control room is sounded, and a signal is sent to the control circuit 32 to temporarily stop the car 4.

After that, when the passenger stops mischief and the car 4 is no longer shaken and the operation lever 22 is no longer pressed, the detection switch 22 is automatically restored and the elevator operation is automatically restarted. . Here, when the car 4 shakes, the operating piece 21 repeatedly comes into contact with and separates from the operating lever 23. Therefore, even if the detection switch 22 automatically returns, even if the operation is not restarted for some time. Good.

In such a car shake detecting device, the car 4
Since the car sway is detected from the vibrations of the speed governor rope 8 and the rod 12 with respect to, the alarm buzzer is sounded and the elevator operation is temporarily stopped, so that the emergency stop device malfunction due to the car sway is prevented. To be done. Here, when the safety device operates, the self-holding type switch that does not automatically return is operating, so the passenger is trapped in the car 4 until the serviceman arrives. However, the detection switch 22 of this embodiment is used. Will automatically recover and will not be trapped.

In the above embodiment, the alarm buzzer sounds when the car sway is detected, but it may be announced, for example, and the car operation panel may be provided with a display means to display it by a lamp or characters. May be. Further, although the operating piece 21 is attached to the rod 12 in the above embodiment, the damping spring 1
It may be attached to the end portions of the speed governor rope 8 or 5, 16.

Further, in the above-described embodiment, the mechanical detection switch 22 which is operated by the operation piece 21 coming into contact with the operation lever 23 is shown, but a proximity switch or an optical switch may be used. Furthermore, in the above embodiment, the control circuit immediately stops the car 4 in response to the signal from the detection relay 24. However, the car 4 may be stopped at the nearest floor. Confinement is more reliably prevented. Further, the car 4 may be recalled to a preset specific floor, and if the floor where the manager is present is set as the specific floor, safety confirmation and operation restart can be smoothly performed.

[0024]

As described above, the elevator car sway detection apparatus according to the first aspect of the present invention is provided with the detection circuit which issues a signal when the amount of vibration of the speed governor rope due to the sway of the car exceeds the set value. Therefore, it is possible to detect the car sway and prevent the governor from malfunctioning due to the car sway.

Further, the elevator car sway detection device according to the invention of claim 2 is provided with an alarm device for issuing an alarm to at least one of the car and the elevator control room in response to a signal from the detection circuit. In addition to the same effect as the invention of Item 1, the intentional swaying of the car due to mischief or the like can be stopped, the malfunction of the governor can be more reliably prevented, and the safety can be improved. Play.

Further, since the elevator car sway detecting apparatus according to the invention of claim 3 is provided with the display means for displaying on the car operation panel according to the signal from the detecting circuit, the same effect as that of the above claim 2 can be obtained. Play.

Furthermore, since the elevator car sway detector of the invention of claim 4 is provided with a control circuit for stopping the car at the nearest floor in response to a signal from the detection circuit, the same as the invention of claim 1 In addition to the above effect, it is possible to prevent passengers from being trapped in the car, and it is possible to improve safety.

Further, in the elevator car sway detection apparatus according to the present invention, an automatic restoration type detection switch is provided in the detection circuit, and the car is temporarily stopped in response to a signal from the detection circuit to detect the detection switch. Since a control circuit is provided for automatically restarting the operation when the vehicle automatically returns, in addition to the effect of the invention of claim 1, a confinement accident can be prevented and the operation can be easily restarted. Therefore, it is possible to reduce maintenance labor and prevent a decrease in operating efficiency.

Further, in the elevator car sway detection device according to the invention of claim 6, an alarm device for issuing an alarm to at least one of the car and the elevator control room in response to a signal from the detection circuit, and a signal from the detection circuit. According to the above, a control circuit for returning the car to a preset specific floor is provided. Therefore, in addition to the same effect as that of the invention of claim 2, a confinement accident can be prevented and the safety can be confirmed. The effect is that it can be easily performed on a specific floor, the safety can be improved, and the reduction of operating efficiency can be prevented.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a car shake detection device according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing an example of a conventional elevator.

3 is an enlarged configuration diagram showing the vibration suppressing device of FIG. 2. FIG.

4 is a relationship diagram showing a relative speed change of the speed governor rope with respect to the car when the car of FIG. 2 sways.

5 is a relationship diagram showing an example of a traveling speed curve of the car of FIG.

FIG. 6 is a relationship diagram showing a speed change of the governor rope detected by the governor when the car of FIG. 2 swings as shown in FIG.

[Explanation of symbols]

 4 car 8 speed governor rope 9 vibration suppression device 22 detection switch 25 detection circuit 31 alarm buzzer (alarm device) 32 control circuit

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] February 28, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

FIG. 3 is an enlarged view of the vibration suppressing device 9 shown in FIG. 2, which is similar to that shown in Japanese Utility Model Laid-Open No. 54-112276, for example. In the figure, 1
7 is an emergency stop lever rotatably provided on the car frame 4b
Therefore, the angle of the emergency stop lever 17 should be a certain value or more.
A mechanism (not shown) that changes only when an upper force is applied
ing. 11 is attached to the tip of the emergency stop lever 17
The support bar 12 is a rod penetrating the support bar 11 slidably in the car up-and-down direction. The rod 12 is provided with upper and lower stoppers 12a and 12b for restricting the sliding stroke. Has been. Also, rod 1
The governor ropes 8 are connected to the upper and lower ends of 2, respectively.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0005

[Correction method] Change

[Correction content]

Reference numerals 13 and 14 respectively denote spring bearing seats fixed to the upper and lower sides of the supporting member 11 of the rod 12, and 15 and 16 support the spring bearing seats 13 and 14, respectively.
Is it if damping is provided between the Ekin 11. In addition, 18 is a nut and 19 is a rod terminal for connecting the speed governor rope 8.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

Next, the operation will be described. Normally, when the car 4 is running, the emergency stop lever 1 is attached to the car frame 4b.
The supporting member 11 supported via 7 is the damping spring 1
Since the springs 5 and 16 are pressed by the same spring pressure from above and below, the vibration suppressing device 9 is stationary with respect to the car 4 in the state of FIG. That is, the normal vibration during traveling of the car 4 is absorbed by the vibration suppressing device 9. If the descending speed of the car 4 increases abnormally, the speed governor 6 causes the speed governor rope 8 to move.
Is restrained, the rod 12 is attached to the damping springs 15 and 16.
It moves counter to the support metal 11 and moves upward in FIG. This
At this time, the stopper 12b pulls the support bar 11 upward.
It As a result, the emergency stop lever 17 rotates, and the connecting rod (not shown) connected to the emergency stop lever 17 is pulled up, so that the car 4
An emergency stop device (not shown) provided at the bottom of the car operates to stop the car 4 in an emergency.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

[0007]

In the conventional elevator constructed as described above, if the car 4 is intentionally shaken by a passenger while traveling, the car frame 4b is not
The sway is transmitted to the speed governor rope 8 connected through the constant stop lever 17 and the support bar 11 . At this time, the damping springs 15 and 16 alternately expand and contract, and the relative speed of the governor rope 8 with respect to the car 4 changes as shown in FIG.
If the traveling speed curve of the car 4 is shown in FIG.
The speed of the speed governor rope 8 detected at 1 changes as shown in FIG. 6, which is a combination of FIG. 4 and FIG. In FIG. 6, the portion exceeding the broken line showing the actual traveling speed of the car 4 is the excess speed due to the shaking of the car 4. In such a case, the speed governor 6 operates by determining that the speed governor rope 8 is accelerating faster than the actual speed, the car 4 is unnecessarily emergency stopped, and it takes time to restart the operation. At the same time, there is a problem that passengers may be trapped in the car 4.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

[0015]

In the present invention, when the car shakes, the vibration is transmitted to the speed governor rope attached to the car.
The displacement of the governor rope due to this vibration is monitored, and when the displacement amount exceeds the set value, a signal is issued by the detection circuit to detect the car sway and prevent malfunction of the governor.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

Next, the operation will be described. During normal operation, as in the conventional case, the support bar 11 is pressed by the damping springs 15 and 16 from above and below with the same spring pressure, so that the vibration suppressing device 9 is stationary with respect to the car 4. Also, basket 4
When the descending speed of is abnormally increased, the governor rope 8 is restrained by the governor 6, and the emergency stop device operates to cause the car 4 to make an emergency stop.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction content]

Further, during normal operation, when the car 4 is greatly shaken due to mischief of passengers, the rod 12 vibrates up and down with respect to the support 11, and the damping springs 15 and 16 alternately expand and contract. Then, when the rod 12 moves upward, the interval K between the operating piece 21 and the operating lever 23 becomes short. When the swing of the car 4 is larger than the set amount, the operating piece 23 contacts the operating lever 22. As a result, the detection relay 24 operates, the alarm buzzer of the car 4 or the elevator control room is sounded, and a signal is sent to the control circuit 32 to temporarily stop the car 4.

[Procedure Amendment 8]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

[Procedure Amendment 9]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Tobita 2-6-2 Otemachi, Chiyoda-ku, Tokyo Sanryo Electric Building Techno Service Co., Ltd. Inazawa Office, Engineering Co., Ltd.

Claims (6)

[Claims] 1. A speed governor rope that is attached to a car through a vibration suppression device, and a detection circuit that outputs a signal when the amount of vibration of the speed governor rope due to car shake exceeds a set value. Elevator car shake detection device characterized by 2. A speed governor rope attached to a car through a vibration suppressing device, a detection circuit which issues a signal when the amount of vibration of the speed governor rope due to car shake exceeds a set value, and An elevator car shake detection device, comprising: an alarm device for issuing an alarm to at least one of the car and the elevator control room in response to a signal from a detection circuit. 3. A speed governor rope attached to a car through a vibration suppression device, a detection circuit which issues a signal when the vibration amount of the speed governor rope due to car shaking exceeds a set value, and A car shake detection device for an elevator, comprising display means for displaying on a car operation panel according to a signal from a detection circuit. 4. A speed governor rope attached to a car through a vibration suppressing device, a detection circuit which issues a signal when the amount of vibration of the speed governor rope due to car shaking exceeds a set value, and A car shake detection device for an elevator, comprising: a control circuit for stopping the car at the nearest floor in response to a signal from the detection circuit. 5. A speed governor rope attached to a car through a vibration suppressing device, and an automatic reset type detection switch which is activated when the amount of vibration of the speed governor rope due to car shake exceeds a set value. A control circuit that has a detection circuit that emits a signal when the detection switch operates, and that temporarily stops the car according to the signal from the detection circuit and automatically restarts the operation when the detection switch automatically returns. A car shake detection device for an elevator, which is provided with a circuit. 6. A speed governor rope attached to a car through a vibration suppressing device, a detection circuit which issues a signal when the amount of vibration of the speed governor rope due to car shaking exceeds a set value, and An alarm device for issuing an alarm to at least one of the car and the elevator control room in response to a signal from the detection circuit, and a control circuit for recalling the car to a specific floor preset according to the signal from the detection circuit. An elevator car shake detection device characterized by being equipped with.