JPH09272674A - Governor rope vibration prevention device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent vibration of a governor rope by providing an earthquake detection part and a frame which is provided in a hoistway, moves to the side of a governor rope, when an earthquake is detected by the earthquake detector, and surrounds the governor rope. SOLUTION: A frame 11 is rotatably attached to a wall part of a hoistway 1 via a spring hinge 12 for attachment. An electromagnet 13 is provided on the wall part of the hoistway 1 so as to attract the frame 11. When an earthquake occurs and excitation of the electromagnet 13 is released by a control part 16 based on a detection signal of an earthquake detection part 15, the frame 11 is rotated by the spring force of the spring hinge 12 for attachment. On the way of its rotating, a stopper 11c is pushed by a governor rope 4 so as to rotate inward of the frame main body 11a, however, when the governor rope 4 enters completely inside the frame main body 11a, it is returned to its original place by the spring force of the spring hinge 11b for stopper. The part of the governor rope 4 connected to a car 2 is thus surrounded with the frame 11 from the four sides.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speed governor rope steady rest device for an elevator, which prevents the speed governor rope from swinging and prevents interference with the equipment in the hoistway. is there.

[0002]

2. Description of the Related Art FIG. 14 is a schematic diagram showing an example of a conventional elevator. In the figure, 1 is a hoistway, 2 is a car that goes up and down in the hoistway 1, 3 is a governor installed in a machine room above the hoistway 1, and a governor for detecting an overspeed of the car 2 is a governor The speed governor rope is wound around the sheave 3 and is suspended in the hoistway 1. Both ends of the speed governor rope 4 are connected to the car 2. 5 is wrapped around the lower end of the governor rope 4,
A pulling wheel 6 that applies a predetermined tension to the device, and a device 6 that is provided so as to project into the hoistway 1.

Next, the operation will be described. When the car 2 moves up and down in the hoistway 1, the speed governor rope 4 connected to the car 2 circulates and the sheave of the speed governor 3 is rotated. The overspeed of the car 2 is detected by monitoring the rotation speed of the sheave of the speed governor 3.

[0004]

In the conventional elevator constructed as described above, a fixed steady rest may be provided on the side of the governor rope 4 which is not connected to the car 2. For the side connected to car 2,
Since a metal fitting for connecting the speed governor rope 4 and the speed governor rope 4 passes therethrough, a steady rest is not provided. Therefore, in the event of an earthquake, the speed governor rope 4 swings greatly, and as shown by the chain double-dashed line in FIG. There was a problem that 4 might be damaged.

The present invention has been made to solve the above-mentioned problems, and it is possible to prevent the speed governor rope from swinging, thereby controlling the speed of equipment in the hoistway. An object of the present invention is to obtain a speed governor rope steady rest device for an elevator, which can prevent the interference of the machine rope.

[0006]

An elevator governor rope steady rest device according to the invention of claim 1 is provided in an earthquake detecting section and in a hoistway, and when an earthquake is detected by the earthquake detecting section. It is provided with a frame that moves to the side of the governor rope and surrounds the governor rope.

According to a second aspect of the present invention, there is provided an elevator speed governor rope steady rest, which includes a frame main body surrounding three sides of the speed governor rope during steady rest operation, and a rotatably attached to the frame main body. A frame having a stopper that surrounds the other one of the governor ropes during operation is used.

In the speed governor rope steady rest device of the elevator according to the third aspect of the present invention, a plurality of frames are provided at intervals in the longitudinal direction of the speed governor rope, and are detected by the car detection unit. The frame to be operated is selected according to the position of the car.

An elevator governor rope steady rest device according to a fourth aspect of the present invention includes a pin that engages with the frame to lock the frame, and an electromagnetic magnet that attracts the pin to unlock the frame. It has a lock part.

An elevator governor rope steady rest device according to a fifth aspect of the present invention includes a frame detection switch for detecting an operating state of the frame.

According to the sixth aspect of the present invention, in the speed governor rope steady rest device of the elevator, the hoistway wall is provided with an opening, and the return rope coupled to the frame is pulled out from the opening. is there.

In the elevator speed governor rope steady rest device according to the seventh aspect of the present invention, the steady rest operation and the return operation of the frame are performed by driving the motor.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1. 1 is a schematic configuration diagram showing an elevator having a speed governor rope steady rest according to Embodiment 1 of the present invention, FIG. 2 is a front view showing the speed governor rope steady rest of FIG. 1, and FIG. 4 is a plan view of FIG. 2, and the same or corresponding parts as in FIG.
The description is omitted.

In the figure, reference numeral 11 denotes a frame rotatably attached to a wall portion of the hoistway 1 via attachment spring hinges 12. The frame 11 is provided on three sides of the governor rope 4 during operation. A frame body 11a that encloses a substantially U-shape, and this frame body 11
It has a stopper 11c that is rotatably attached to a through a stopper spring hinge 11b and surrounds the other one of the governor ropes 4 during operation. An electromagnetic magnet 13 is provided on the wall of the hoistway 1 and attracts the frame 11.

Reference numeral 14 is a steady rest having a frame 11, a mounting spring hinge 12 and an electromagnetic magnet 13. A plurality of steady rests 14 are installed in the longitudinal direction of the speed governor rope 4 at intervals. There is. Reference numeral 15 is an earthquake detection unit provided at the bottom of the hoistway 1, 16 is installed in a machine room at the top of the hoistway 1, and control is performed to operate the steady rest 14 according to an earthquake detection signal from the earthquake detection unit 15. The parts 17 are provided in the vicinity of the steady rests 14, and are cage detectors that detect whether or not the cage 2 is present at the position of the steady rests 14.

Next, the operation will be described. When an earthquake occurs and a detection signal is output from the earthquake detector 15, the controller 16 deenergizes the electromagnetic magnet 13.
At this time, the control unit 16 confirms the position of the car 2 based on the signal from the car detection unit 17, and the excitation of the electromagnetic magnet 13 at that position is continued. When the excitation of the electromagnetic magnet 13 is released, the spring force of the attachment spring hinge 12 causes the frame 11 to move.
Rotates. During the rotation, the stopper 11c is pushed by the speed governor rope 4 to rotate inside the frame body 11a, but when the speed governor rope 4 completely enters the inside of the frame body 11a, the stopper spring hinge. It returns to its original state due to the spring force of 11b. Therefore, as shown by the chain double-dashed lines in FIGS. 3 and 4, the portion of the speed governor rope 4 on the side connected to the car 2 is surrounded by the frame 11 from four sides.

As described above, when the earthquake occurs, the governor rope 4 is surrounded by the frame 11a, so that the governor rope 4 is prevented from swinging and the device 6 is prevented from being damaged by the interference of the governor rope 4. It In addition, the position of the car 2 is set to the car detection unit 15
Therefore, the frame 11a is prevented from hitting the car 2. Further, by displaying on the control unit 16 which steady rest 14 has operated, the inspection work and the return work can be facilitated. Furthermore, when the device operates, it is possible to notify the administrator or the management company by a telephone line or the like.

Embodiment 2. Although the frame 11 is rotated about the horizontal axis in the first embodiment, the frame 11 is rotated laterally about the vertical axis as shown in FIG. 5, for example. You may do it.

Embodiment 3 Further, although the frame 11 having the single stopper 11c is shown in the first embodiment, FIG.
As shown in FIG.
You may make it open a center part using e. This facilitates the governor rope 4 to enter the inside of the frame 11.

Embodiment 4 Further, the first embodiment
In the above, the case where the frame 11 is rotated is shown, but as shown in FIG. 7, it is also possible to use a plunger 18 to linearly move in the horizontal direction. This makes frame 1 faster
1 can be moved.

Embodiment 5 Next, FIG. 8 is a side view showing a main part of a speed governor rope steady rest according to Embodiment 5 of the present invention. In the figure, 21 is a lock portion that is provided on the hoistway wall and locks the frame 11. The lock portion 21 is a pin 21 that engages with the frame 11 and locks the frame 11.
a and an electromagnetic magnet 21b that attracts the pin 21a and releases the lock.

In such a device, the electromagnetic magnet 21b is not normally excited, and the frame 11 is locked as shown in FIG. On the other hand, when an earthquake occurs, the electromagnetic magnet 21b is excited, the pin 21a moves upward, and the lock of the frame 11 is released. As a result, the frame 11 rotates to prevent the speed governor rope 4 from swinging. In this way, since the lock of the frame 11 is released only when the electromagnetic magnet 21b is energized, malfunctions during power failure are prevented.

In order to cope with an earthquake that occurs during a power failure, a power failure detection relay may be provided so that it can be operated by a battery.

Embodiment 6 FIG. 9 is a side view showing a main part of a speed governor rope steady rest device according to a sixth embodiment of the present invention. In the figure, reference numeral 22 is a lock portion that is provided on the hoistway wall and locks the frame 11.
Is a pin 22a that locks the frame 11 by engaging with the frame 11.
A spring 22b for urging the pin 22a in the locking direction (upward in the drawing), and an electromagnetic magnet 22c for attracting the pin 22a to release the lock. 23 is a frame 11
And an inclined surface 23a is provided at the tip of the engaging portion 23.

In this example, when the electromagnetic magnet 22c is excited, the pin 22a retracts against the spring 22b and the frame 11 is unlocked. Further, when the frame 11 is returned, since the engaging portion 23 has the inclined surface 23a, the inclined surface 23a pushes down the pin 22a, and the pin 22a can be returned with one touch.

Embodiment 7 FIG. 10 is a side view showing a main portion of a speed governor rope steady rest according to Embodiment 7 of the present invention. In the figure, reference numeral 24 is a frame detection switch for detecting the operating state of the frame 11.

In this example, the detection information of the frame detection switch 24 is displayed on the control panel by a lamp to prevent malfunction, shorten the recovery work time, and prevent the elevator from starting while the frame 11 is operating. realizable.

Embodiment 8 Next, FIG. 11 is a side view showing a main part of a speed governor rope steady rest according to Embodiment 8 of the present invention. In the figure, 25 is an opening provided in the hoistway wall, 26 is a lid that opens and closes the opening 25 from the landing side, and 27 is a distal end coupled to the frame 11 and a proximal end pulled out into the opening 25. It is a return rope that is

According to such a device, the lid 2 is installed from the hall side.
By opening 6 and pulling the return rope 26, the operator can easily and safely enter the frame 11 without entering the hoistway.
Can be restored.

Embodiment 9 Next, FIG. 12 is a side view showing a main part of a speed governor rope steady rest according to Embodiment 9 of the present invention, and FIG. 13 is a plan view of FIG. In the figure, 31 is a shaft which is attached to the hoistway wall by a metal fitting 32 and rotates the frame 11, 33 is a gear provided at one end of the shaft 31, and 34 is a shaft which rotates the shaft 31 via the gear 33. A motor, 35 is a first detection switch for detecting that the frame 11 is at the return position, and 36 is a second detection switch for detecting that the frame 11 is at the steady rest operation position.

In this apparatus, both the steadying operation and the returning operation of the frame 11 are automatically performed by driving the motor 34. The motor 34 is stopped by the first and second detection switches 35 and 36. Therefore, the frame 11 can be easily and safely returned without the worker entering the hoistway.

[0032]

As described above, the speed governor rope steady rest device of the elevator according to the invention of claim 1 is provided in the earthquake detecting section and the hoistway, and when an earthquake is detected by the earthquake detecting section. Since it is equipped with a frame that surrounds the speed governor rope and moves to the speed governor rope side, it is possible to prevent the speed governor rope from swinging, which allows the speed governor rope to reach equipment in the hoistway. Interference can be prevented.

According to a second aspect of the present invention, there is provided an elevator speed governor rope steady rest device, which includes a frame body surrounding three sides of the speed governor rope at the time of steady rest operation, and a rotatably attached to the frame main body. Since a frame having a stopper that surrounds the other one of the governor ropes is used, the governor rope can be more reliably prevented from swinging with a simple configuration.

In the elevator governor rope steady rest device according to a third aspect of the present invention, a plurality of frames are provided at intervals in the longitudinal direction of the governor rope, and the car detected by the car detection unit. Since the frame to be operated is selected according to the position of, it is possible to prevent the operated frame from colliding with the car.

According to a fourth aspect of the present invention, there is provided an elevator speed governor rope steady rest which has a pin which engages with the frame to lock the frame and an electromagnetic magnet which attracts the pin to unlock the frame. Since the unit is provided, it is possible to prevent the frame from malfunctioning at the time of power failure.

Since the speed governor rope steady rest device of the fifth aspect of the invention is provided with the frame detection switch for detecting the operating state of the frame, the inspection work and the recovery work can be performed in a short time.

In the elevator speed governor rope steady rest device according to a sixth aspect of the invention, the hoistway wall is provided with an opening, and the return rope coupled to the frame is pulled out from the opening. The frame can be easily returned without a person entering the hoistway.

In the elevator speed governor rope steady rest according to the seventh aspect of the present invention, since the steady rest operation and the returning operation of the frame are performed by driving the motor, the returning work is further facilitated.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an elevator having a speed governor rope steady rest according to Embodiment 1 of the present invention.

2 is a front view showing the speed governor rope steady rest of FIG. 1. FIG.

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a plan view of FIG. 2;

FIG. 5 is a plan view showing a main part of a speed governor rope steady rest according to Embodiment 2 of the present invention.

FIG. 6 is a plan view showing a main part of a speed governor rope steady rest according to a third embodiment of the present invention.

FIG. 7 is a plan view showing a main part of a speed governor rope steady rest according to a fourth embodiment of the present invention.

FIG. 8 is a side view showing a main part of a speed governor rope steady rest according to Embodiment 5 of the present invention.

FIG. 9 is a side view showing a main part of a speed governor rope steady rest according to Embodiment 6 of the present invention.

FIG. 10 is a side view showing a main part of a speed governor rope steady rest according to Embodiment 7 of the present invention.

FIG. 11 is a side view showing essential parts of a speed governor rope steady rest according to Embodiment 8 of the present invention.

FIG. 12 is a side view showing essential parts of a speed governor rope steady rest according to Embodiment 9 of the present invention.

FIG. 13 is a plan view of FIG.

FIG. 14 is a schematic configuration diagram showing an example of a conventional elevator.

[Explanation of symbols]

1 hoistway, 2 car, 4 speed governor rope, 11 frames,
11a frame body, 11c stopper, 15 earthquake detector, 17 car detector, 21, 22 lock part, 21
a, 22a pin, 21b, 22c electromagnetic magnet,
24 frame detection switch, 25 opening, 27 return rope, 34 motor.

Claims (7)

[Claims] 1. An earthquake detector, and a frame provided in the hoistway, which moves to the governor rope side when an earthquake is detected by the earthquake detector and surrounds the governor rope. Elevator governor rope steady rest device characterized in that 2. A frame main body that surrounds the governor rope on three sides during steady rest operation, and a stopper that is rotatably attached to the frame main body and surrounds the other one side of the governor rope during steady rest operation. The speed governor rope steady rest device of an elevator according to claim 1, further comprising: 3. A plurality of frames are provided at intervals in the longitudinal direction of the governor rope, and the frame to be operated is selected according to the position of the car detected by the car detection unit. Claim 1 or claim 2 characterized in that
Elevator governor rope steady rest device described. 4. A lock portion having a pin that engages with a frame to lock the frame, and an electromagnetic magnet that attracts the pin to release the lock of the frame. The speed governor rope steady rest device for an elevator according to claim 3. 5. A frame detection switch for detecting the operating state of the frame is provided.
Elevator governor rope steady rest device according to any one of 1. 6. The hoistway wall is provided with an opening, and the return rope coupled to the frame is pulled out from the opening, according to any one of claims 1 to 5. Governor rope steady rest device for elevator. 7. The speed governor rope steady rest device for an elevator according to claim 1, wherein the steady rest motion and the return motion of the frame are performed by driving a motor.