JP2003312959A - Governor tensioner device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress a peripheral velocity fluctuation of a governor without giving an excessive lateral vibration to the governor rope by the deflection of the governor tensioner generated by passenger excitation or the like. <P>SOLUTION: The governor tensioner device is hung on the governor rope in order to apply tension to the governor rope wound to the governor detecting the speed to make it synchronize with a cage. A guide part surrounding a tension sheave is provided to suppress the deflection of the governor, and the guide part is fixed to the guide rail by the guide mounting part. The guide part enables the guide tensioner to vertically elevate in the guide part. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a governor tensioner device for applying tension to a governor rope for synchronizing a governor for speed adjustment of an elevator with a governor rope.

[0002]

2. Description of the Related Art A conventional governor tensioner 5 includes a governor rope 1 with a tensioner sheave 5a as shown in FIG.
A support plate 6 that is hung on the floor and has a sheave shaft 5b rotatably attached thereto is rotatably attached to an attachment plate 7. The mounting plate 7 includes a guide rail 2, a rail clip 22, bolts,
It is attached by a nut 23. In this case, as the governor rope 1 expands over time, the support plate 6 of the governor tensioner 5 rotates downward about the mounting shaft 6a. Further, the governor tensioner 5 follows the vibration of the governor rope 1 due to the vibration of the passengers, etc., centering on the mounting shaft 6a of the support plate 6.

[0003]

By the way, in the conventional governor tensioner 5 as described above, even if the governor tensioner is attached to the fall position of the governor rope core 1a at the time of installation and adjustment, the support plate 6 is not supported due to the elongation of the governor rope over time. May rotate and the governor rope core 1a may be displaced, and the governor rope 1 may not move smoothly. In addition, the governor tensioner 5 cannot follow the sway of the governor rope 1 caused by the vibration of passengers in the car or the emergency stop of the elevator, giving unnecessary lateral vibration to the governor rope 1 and increasing the peripheral speed fluctuation of the governor. , There is a risk that the electric safety device will operate and stop the elevator.

The present invention has been made to solve such a problem.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided a tension sheave which is interlocked with a governor rope hung on a governor for detecting a speed in synchronization with the raising and lowering of a car, and the tension sheave sandwiched between the tension sheave. A governor tensioner that rotatably supports a sheave and applies tension to the governor rope, a guide portion that is coupled to the governor tensioner to limit lateral runout and holds the movable portion in the vertical direction, and the guide portion. A governor tensioner device including a guide mounting portion that is mounted at a predetermined position.

As a result, the governor tensioner can be vertically moved up and down, and since there is no lateral sway, fluctuations in the peripheral speed of the governor can be suppressed.

In this case, in order to prevent the contact between the governor tensioner and the guide portion, it is preferable to provide a low friction material on the surface of the guide portion facing the governor tensioner.

Further, the governor tensioner comprises a plate-shaped front weight, a back weight and a central weight which is interposed between these weights and integrated with each other. A gap is formed between the front weight and the back weight, and tension is applied to this gap. It is in a governor tensioner device with a sheave.

Further, there is a governor tensioner device in which the guide portion is one or more annular bodies surrounding the outside of the governor tensioner.

Further, there is a governor tensioner device in which the governor tensioner has a guide hole of a through-hole extending vertically and the guide portion is inserted into this hole.

Further, in the governor tensioner device, the governor tensioner has a guide rod extending downward in the lower portion, and the guide portion holds the guide rod so as to be movable in the vertical direction.

The guide mounting portion is fixed to the guide rail of the car, and is located in the governor tensioner device.

Since the governor rope is suspended along the guide rail, the guide mounting portion can be formed short and the governor tensioner can be firmly fixed.

Further, the governor tensioner device is characterized in that the governor tensioner is provided with means for restricting the vertical movement of the governor tensioner.

This limiting device prevents the governor tensioner from jumping up due to the vibration of passengers in the elevator or the emergency stop of the elevator, and prevents the governor tensioner from coming out of the guide when the governor rope extends over time. be able to.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIGS. 1 and 2 (a), (b), and (c) illustrate the present embodiment. As shown in FIG. 1, the governor rope 1 is an endless rope, and on the hoistway. It is hung on the governor 3 installed in the section, and one place on one side is engaged with the car 4. In order to apply a tension to the governor rope 1, a governor tensioner 10 having a predetermined weight is suspended vertically through a tensioner sheave 11 in a pit of a hoistway.

As shown in FIG. 2, the governor tensioner 10 is restricted by the guide portion 30 so that it can be shaken in the lateral direction, but is gently surrounded so that the governor tensioner 10 can be moved in the vertical direction so that the suspended position of the governor tensioner 10 does not shift. Guide mounting part 2
Installed by 0.

The governor tensioner 10 comprises a front weight 14 and a back weight 15 each made of a rectangular iron plate, and a central weight 16 sandwiched between them. The center weight 16 is formed in a short size, and has a bolt 43 and a nut 44.
When the three members are fastened and fixed integrally with each other, a gap is formed in the upper part of the front weight 14 and the back weight 15. The thickness of the central weight 16 determines the distance between the gaps, and the tensioner sheave 11 is arranged in the gap. The tensioner sheave 11 is rotatably held by the sheave shaft 12 attached to the back surface of the back weight 15. Front weight 1
It is possible to reduce the entry of foreign matter into the gap by raising the upper portions of 4 and the back weight 15 to cover the tension sheave 11.

The bolts 43 and nuts 44 for connecting the weights 14, 15 and 16 can accommodate the heads of the bolts 43 and the nuts 44 by providing the front weight with the counterbore 14a and the rear weight with the counterbore 15d. Thereby, the front weight 14 and the rear weight 15
The surface of the tensioner 10 can be made flat, and the governor tensioner 10 can be smoothly moved up and down without interfering with the guide portion 30 of the tensioner.

The sheave shaft 12 of the tensioner sheave 11 is fixed with a nut 13. The head portion 12 a of the sheave shaft 12 fits into the countersink 15 a of the back weight 15. This allows
The surface of the back weight 15 can be flattened. As a result, the governor tensioner 10 can be smoothly moved in the vertical direction and moved up and down without interfering with the guide portion 30.

The guide portion 30 is formed of a part 21a of a long flat plate member 21 and a U-shaped member 31, and is an annular body that surrounds the governor tensioner 10 and gently holds it. The U-shaped member 31 is fixed to the flat plate member 21 via a bolt 32 and a threaded portion 33 of a part 21a of the flat plate member. The bolt 32 may be fixed with a nut 34.

The other portion 21b of the flat member is a guide portion 30.
From arm to arm rail clip 22, bolt 23,
It functions as the guide mounting portion 20 together with the nut 24.
That is, the guide attachment portion 20 is fixed to a predetermined position of the guide rail 2 for the car provided in the hoistway via the rail clip 22, the bolt 23, and the nut 24.

In order to prevent the governor tensioner 10 from jumping up, a stopper 18 is attached to the lower hole 15b of the rear weight 15. A plurality of holes 15b are provided on the center of the governor tensioner 10. By attaching the stopper 18 to an arbitrary hole, the stopper 18 and the guide attachment portion 2 can be formed.
The distance of 0 can be adjusted. Governor tensioner 1
Stopper 1 to prevent 0 from coming off from the guide part 30
9 is attached to the upper hole 15c of the back weight 15.
A plurality of holes 15c are provided on the center line of the governor tensioner 10, and by attaching the stopper 19 to any hole,
The distance between the stopper 19 and the guide portion 30 can be adjusted. Inside the U-shaped member 31 and the flat plate-shaped member 21a,
A low friction material 35 is provided so that the guide portion 30 does not generate a contact noise with the governor tensioner 10.

Since the central weight 16 is thicker than the front weight 14 and the rear weight 15, the center weight 16 may be composed of a plurality of iron plates in consideration of availability and assembly of materials.

A cover 60 is attached to the upper ends of the front weight 14 and the rear weight 15 to cover the tension sheave 11 across these weights. This cover prevents foreign matter from entering the gap formed by the weight and prevents the sheave and the sheave shaft from being contaminated. Cover 6
Notches 61 for passing the governor rope 1 are formed on both sides of 1. (Second Embodiment) FIGS. 3A and 3B show a second embodiment. Hereinafter, the same symbols as those in the first embodiment indicate the same parts. The rectangular guide rod 51 provided with a stopper 51b is attached to the lower part of the center weight 16 of the tensioner 10 along the center of the tensioner, and a guide portion 53 for gripping the guide rod 51 with a guide rail is provided by the guide attachment portion 52. Two
Install on.

The guide rod 51 is slidable vertically in the through hole of the guide portion 53, and its moving range is limited to the range where the central weight 16 and the stopper 51b correspond to the guide portion 53. This makes it possible to prevent the tensioner from jumping up and coming off from the guide portion. With the above configuration, the same effect as that of the above-described embodiment can be obtained. As the guide rod, another rod-shaped body such as a round member can be used instead of the rectangular member. (Third Embodiment) FIGS. 4A and 4B show a third embodiment. The governor tensioner 10 is provided with a through long hole 10a formed so as to extend in the vertical direction along the center line thereof, the guide bolt 25 is inserted into the through hole 10a, and the guide bolt attaching portion 26 attached to the guide rail 2 is provided. Secure with nut 27. The guide bolt 25 that limits the lateral movement of the tensioner serves as a guide portion, and the guide bolt mounting portion 26 serves as a guide mounting portion. The length of the through hole limits the vertical movement distance of the governor tensioner 10 and prevents the governor tensioner 10 from jumping up.

As a result, the same effect as that of the above embodiment can be obtained. (Fourth Embodiment) FIGS. 5A and 5B show a fourth embodiment. The difference from the first embodiment is that the guide parts 20 are attached at two positions, upper and lower. Thereby, the distance between the guide portions can be set arbitrarily, and the stoppers 18 and 19 can be fixed without providing a plurality of stopper insertion holes 15b and 15c provided in the first embodiment. Also in this embodiment, it is possible to obtain the same effect as that of the above embodiment.

[0028]

According to the present invention, since the governor tensioner vertically moves up and down with respect to passenger vibration, emergency stop of the elevator, or long-term rope extension, the governor tensioner sways due to passenger vibration or the like. No extra lateral vibration is applied to. As a result, fluctuations in the peripheral speed of the governor can be suppressed, the electric safety device is not operated and the elevator is not stopped, and the stability of the elevator system can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic front view of a hoistway according to a first embodiment.

2A and 2B show a governor tensioner device according to a first embodiment, FIG. 2A is a plan view, FIG. 2B is a front view, and FIG.

3A and 3B show a governor tensioner device of a second embodiment, FIG. 3A being a front view and FIG. 3B being a plan view.

4A and 4B are a front view and a side view of a governor tensioner device of a third embodiment.

FIG. 5A is a front view and FIG. 5B is a side view showing a governor tensioner device of a fourth embodiment.

FIG. 6 is a front view showing the structure of a conventional governor tensioner.

[Explanation of symbols]

1 ... governor rope 2 ... Guide rail 3 ... Governor 4 ... Car basket 10 ... Governor tensioner 10a ... Through-hole 11. Tensioner sheave 14 ... Front weight 15 ... Back weight 16 ... Central weight 18, 19 ... Stopper 20 ... Guide mounting part 30 ... Guide part 35 ... Low friction material 51 ... Guide rod

Claims (7)

[Claims] 1. A tension sheave engaged with a governor rope hung on a governor for detecting the speed, which is interlocked in synchronization with the ascending / descending of a car, and rotatably rotatably supports the tension sheave with the tension sheave interposed therebetween. A governor tensioner that applies tension to the governor rope; a guide portion that is coupled to the governor tensioner to limit lateral runout and hold the movable portion in a vertical direction; and a guide attachment portion that attaches the guide portion to a predetermined position. A governor tensioner device comprising: 2. The governor tensioner comprises a plate-shaped front weight, a back weight and a central weight which is interposed between these weights to be integrated with each other. A gap is formed between the front weight and the back weight, and the central weight is formed in the gap. The governor tensioner device according to claim 1, wherein the tension sheave is arranged. 3. The governor tensioner device according to claim 1, wherein the guide portion is formed of one or more annular bodies surrounding the outside of the governor tensioner. 4. The governor tensioner device according to claim 1, wherein said governor tensioner has a vertically elongated guide hole, and said guide portion is inserted into this elongated hole. 5. The governor tensioner device according to claim 1, wherein the governor tensioner has a guide rod extending downward in a lower portion thereof, and the guide portion holds the guide rod so as to be vertically movable. 6. The governor tensioner device according to claim 1, wherein the guide mounting portion is fixed to a guide rail of the car. 7. The governor tensioner device according to claim 1, wherein the governor tensioner is provided with means for limiting vertical movement of the governor tensioner.