JPH038696Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a vibration suppressing device for a governor rope for an elevator, and in particular to a vibration suppressing device that improves the connection between the governor rope and the car to further increase reliability. be.

[Problems to be solved by conventional techniques and ideas]

First, a conventional governor rope vibration suppressing device will be explained using FIGS. 2 to 4. In the figure, 1 is the sheave of the hoist, 2 is the solace wheel, 3 is the main rope, 4 is the thimble rod spring provided at the end of the main rope 3, 5 is the elevator car, 5' is the car frame, 6 is a counterweight, 7 is a safety device lifting lever connecting rod, and 8 is connected to spring cases 11 and 12 through rope sockets 22 and pins 21 at both ends.
9 is a governor body that detects overspeed of the elevator car 5, 10 is a governor tension pulley, and 14 is rotatably connected to the connecting rod 7 for lifting the safety machine via a pin 19 in the center. The connected connecting rod 20 is a washer for preventing the pin 19 from coming off, 15a, 1
5b is a spring seat fixed to the cases 11 and 12;
3a and 13b are two springs that are fitted on both sides of the connecting rod 14 inside the cases 11 and 12 and act as buffers.
Fixed via. Reference numeral 23 denotes a friction seat made of a material with good wear resistance, such as urethane rubber, for providing damping due to friction between it and the rod 14;
4 is a presser plate for holding the friction seat 23, and 25 is a screw for fixing the presser plate 24.

By the way, in general, when a passenger jumps inside the car, the car 5 momentarily vibrates at a frequency of 1 Hz to several Hz, so the natural frequency of the governor rope system is set to be sufficiently smaller than the frequency of the car. The springs 13a and 13b must be selected so that
If the springs 13a and 13b are appropriately selected, the momentary vibrations generated in the car can be reduced by the two springs 13a and 13b.
13b works effectively, the rod 14 only vibrates up and down, but the vibration is not transmitted to the governor rope 8, and the governor device does not malfunction. Furthermore, even if vibration is transmitted to the governor rope system, the vibration can be effectively damped by the damper effect between the friction seat 23 and the rod 14.

However, in such a conventional device, as can be seen from FIG.
Since the springs 13a and 13b are connected in an endless manner through the rod 14 through the tension pulley 10, the tension of the tension pulley 10 is constantly acting on the springs 13a and 13b.
Since the strength of the spring is required so that the casing 13b does not come into close contact with the cases 11 and 12, there is a drawback that the spring strength that sufficiently exhibits the resonance avoidance and vibration suppressing effect cannot be freely selected.

Further, for example, the governor rope vibration suppressing device disclosed in Japanese Utility Model Publication No. 58-27139 is constructed as shown in FIGS. 6 and 7.

That is, 40 is a rod arranged at both ends of the governor rope 8 and connects the governor rope endlessly; 41
A holder is rotatably attached to the connecting rod 7 for lifting the safety machine, and is formed of two layers of angles 41A and 41B, and is loosely inserted into the rod 40. 42, 43 are the spring seats 40A, 40B provided on the rod 40 and the angle 41A of the holding body 41;
A damping spring 44 is provided between the vibration damping springs 41B and 44 is a friction seat made up of leaf springs 44A and 44B attached to the holder 41. The vibrations of the governor rope are suppressed by the action of the springs 42 and 43 and the friction seat 44. It's becoming like that.

However, although the springs 42 and 43 of this type of device can be selected to be optimal for vibration suppression, all parts are installed in an exposed state, so in the unlikely event that a protrusion in the hoistway occurs while the elevator car is running. It cannot be said to be highly reliable because it will be damaged immediately if it hits something. In addition, the setting of the friction force by the friction seat 44, which is inconvenient if it is too strong or too weak, can be avoided by using screw plate springs 44A, 44 against the rod 40 with a small diameter.
It is necessary to adjust the degree of installation of B.
If dust or oil adheres to the surface of the rod 40, etc., the vibration suppressing effect due to frictional force will change significantly, and it is difficult to say that the device is highly reliable.

The present invention has been devised in view of the above points, and an object of the present invention is to provide a highly reliable governor rope vibration suppression device that can extremely stably suppress vibrations of the governor rope using a spring and a friction seat.

[Means for solving problems]

The present invention includes a hollow metal case arranged at both ends of a governor rope to connect the governor rope endlessly, and inside the metal case there is a sliding body connected to a connecting rod for lifting a safety machine, and a first spring. and the second
a spring, the first spring is disposed above the sliding body, the second spring is disposed below the sliding body, and the sliding body has a friction member that contacts the inner surface of the metal case with an appropriate pressure. The sliding body is provided with a seat, and the sliding body is slidably provided in the metal case so as to be restrained by the first spring, the second spring, and the friction seat.

[Effect]

With the above-described structure, the sliding body moves on the inner surface of the case to which dust, oil, etc. do not adhere so much, while being subjected to an appropriate frictional force by the friction seat.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 5.

In the figures, the same reference numerals as those in FIGS. 2 to 4, and FIGS. 6 and 7 indicate the same parts, and 31 connects the governor rope 8 endlessly through the rope socket 22 and pin 21. For example, in a hollow case 31, a slider 32 has a notch 32a in the center and is slidable vertically inside the hollow case 31. The machine lifting lever connecting rod 7 is rotatably connected by a bolt 32b,
The case 3 is inserted into the upper through hole 32c by a spring 33.
A friction seat 34 is fitted into the inner surface of 1 and comes into contact with an appropriate pressure. Springs 35 and 36 are inserted into the case 31 at the top and bottom, respectively, with the slider 32 in between, and have the function of suppressing the swinging of the slider 32.

With such a configuration, the spring pressure of the springs 35 and 36 can be selected only for vibration suppression, regardless of the tension of the governor rope 8, and the slider 32 can be selected when the governor device is operated.
Even if the springs 35 and 36 move, the springs 35 and 36 do not deform laterally, so it is possible to obtain a device with fewer malfunctions. In addition, since all the parts are housed inside the case 31, there is no chance that the case 31 might come into contact with a rail bracket or the like during periodic inspections of the operating speed of the governor device, which accelerates the governor by attaching a weight to the governor rope. Even if this happens, if the case 31 itself is made of a strong material such as metal, there is no risk of major damage as with conventional devices. In particular, the surface on which the friction seat acts has a structure that prevents dust and oil from adhering to it, making the frictional force more stable against changes over time, making it possible to maintain extremely stable performance.

In addition, when the governor device operates, the spring 35,
When the connecting rod 7 moves downward by a stroke corresponding to a predetermined deflection of the connecting rod 36, the connecting rod 7 comes into contact with the lower end of the slit 31a of the case 31, and the connecting rod 7 is operated so that the governor device can be operated reliably. can.

[Effect of idea]

As described above, according to the present invention, both ends of the governor rope are connected in an endless manner by a metal case, and a sliding body to which a connecting rod for lifting the safety machine is connected is slidably provided in the case. Since the movement of the vibration damper is configured to be directly restrained by a spring and a friction seat, it is possible to obtain a simple, space-saving vibration suppression device with stable performance, no risk of malfunction, and a highly reliable structure. . In addition, since the spring, friction seat, etc. are completely housed in the metal case, it is convenient to transport from factory shipment to on-site installation, and will not be damaged during the process.

[Brief explanation of the drawing]

Fig. 1 is an enlarged view of the main parts showing one embodiment of the governor rope vibration suppression device according to the present invention, Fig. 2 is a schematic diagram showing the structure of an elevator, and Figs. 3 and 6 are conventional vibration suppressing devices shown in Fig. 2. Enlarged views showing two examples of suppression devices, Figure 4 is a side view of Figure 3, Figure 5 is a side view of Figure 1.
FIG. 7 is a side view of FIG. 6. 7... Connecting rod for lifting the safety machine, 8... Governor rope, 31... Case, 34... Friction seat, 35,
36...Spring.

Claims (1)

[Claims for Utility Model Registration] (1) A hollow metal case is provided at both ends of the governor rope to connect the governor rope in an endless manner, and a slide to which a connecting rod for lifting the safety machine is connected is provided in the metal case. A moving body, a first spring, and a second spring are provided, the first spring is disposed above the sliding body, the second spring is disposed below the sliding body, and the sliding body is A friction seat is provided that contacts the inner surface of the metal case with an appropriate pressure, and the sliding body is slidable relative to the metal case so as to be restrained by the first spring, the second spring, and the friction seat. A vibration suppressing device for a governor rope, characterized in that it is provided with a governor rope vibration suppressing device. (2) The vibration suppressing device for a governor rope according to claim 1, wherein the metal case is a cylindrical hollow metal case. (3) Vibration of the governor rope according to claim 1, wherein the sliding body is configured by providing a through hole in the sliding body, and fitting the friction seat into the through hole. Suppressor.