JP5542392B2 - Elevator hoist support device - Google Patents

Description

  The present invention relates to a support device for an elevator hoisting machine that suppresses amplification of sound or vibration due to resonance of a machine base.

  Usually, a simple structure such as H steel is often used for a machine base of an elevator hoisting machine having a machine room. Such H steel has a large surface, such as the side surface of the central rib portion, and vibration generated from the hoisting machine is transmitted to the machine base and resonates on the side surface of the central rib portion of the H steel. The vibration may be amplified. Therefore, when there is a room around the machine room, the amplified sound or vibration may propagate to the room and become a complaint.

  The hoisting machine and the machine base are fixed via vibration-proof rubber. However, the effect of this vibration-proof rubber cannot be expected for resonance of the machine base. Therefore, in order not to amplify the sound or vibration, it is mainly to suppress the vibration by welding reinforcement to the machine base at the resonating portion (surface) of the machine base and increasing the rigidity. It is used as a means (for example, refer patent document 1).

  Further, as another means, it is considered to attach a weight to a resonating portion (surface) of the machine base and shift the resonance point.

JP-A-57-131684

However, the prior art has the following problems.
The former measure to weld reinforcement to increase the rigidity of the machine base is considered to be difficult to implement at the installation site if it becomes a problem after installation of the hoisting machine. There is. Further, the measure for attaching the latter weight requires a very large number of weights (weights) and is difficult to mount.

  The present invention has been made to solve the above-described problems, and provides a support device for an elevator hoisting machine having a practical configuration for suppressing amplification of sound or vibration due to resonance of a machine base. The purpose is to obtain.

The elevator hoisting machine support device according to the present invention is an elevator hoisting machine support device that suppresses resonance of the machine base by transmitting vibration generated from the elevator hoisting machine to the machine base, the machine stand has a first resonance main part and the second resonator main part which is fixedly disposed so as to face a screw rod, the amount of compression provided at one end of the threaded rod and an adjustable elastic member A vibration suppression means for suppressing resonance of the machine base by connecting between the first resonance main part and the second resonance main part of the machine base, and the vibration suppression means is an elastic body. Is arranged so as to contact the first resonance main part of the machine base, and the other end of the screw rod is screw-coupled to the second resonance main part, and the compression amount is adjusted by rotating the screw rod. it is, adjustable the degree cancellation of vibration between the first resonator main part and the second resonator main part It is an.

  According to the elevator hoisting machine support device of the present invention, when the machine base resonates due to vibration generated from the hoisting machine, the resonance main parts of the machine base are coupled to each other via an elastic body. By providing means for changing the vibration mode system composed of the stands, an elevator hoisting machine supporting device having a practical configuration for suppressing the amplification of sound or vibration due to resonance of the machine stand can be obtained. .

It is a figure which shows the whole structure of the support apparatus of the elevator hoisting machine in Embodiment 1 of this invention. It is a principal part enlarged view of the support apparatus of the elevator hoisting machine in Embodiment 1 of this invention. It is a principal part enlarged view of the support apparatus of the elevator hoisting machine in Embodiment 2 of this invention. It is a principal part enlarged view of the support apparatus of the elevator hoisting machine which has another structure in Embodiment 2 of this invention.

  Hereinafter, preferred embodiments of a support device for an elevator hoist according to the present invention will be described with reference to the drawings.

Embodiment 1 FIG.
FIG. 1 is a diagram showing an overall configuration of a support device for an elevator hoist according to Embodiment 1 of the present invention. A rope 2 is wound around the hoist 1, and a car (not shown) is suspended at one end of the rope 2. On the other hand, a suspension weight (not shown) is suspended from the other end of the rope via a deflecting wheel 3. Then, when the hoisting machine 1 is driven, the car and the suspended weight are lifted and lowered in a slidable manner.

  The hoisting machine 1 is fixed to a machine base 5 via a vibration isolating rubber 4. For the machine base 5, a simple structure such as H steel is usually used. When the hoisting machine 1 is driven, vibration is generated, and this vibration propagates to the machine base 5 through the vibration isolating rubber 4. At this time, if the resonance frequency of the machine base 5 and the frequency of vibration generated from the hoist 1 are close to each other, the machine base 5 may resonate. When the machine base 5 is made of H steel, a portion constituting a large plane, such as the central rib side surface 5a, can be cited as a resonance main part.

  Therefore, in the first embodiment, the vibration suppressing means 10 is provided between the central rib side surfaces 5a of the machine bases 5 arranged so as to face each other (that is, between the resonance main parts) (A in FIG. 1). Section). FIG. 2 is an enlarged view of a main part of the elevator hoisting machine support apparatus according to Embodiment 1 of the present invention, and corresponds to an enlarged view of part A in FIG. The vibration suppression means 10 in FIG. 2 includes an elastic body 11, a spring seat 12, a screw rod 13, a screw seat 14, and a set nut 15.

  The central rib side surface 5a of the machine base 5 is connected via an elastic body 11 such as a spring. The spring seat 12 is fixed to one end of the screw rod 13. Further, the other end of the screw rod 13 is screwed to a screw seat 14 and fixed with a lock nut 15.

  By rotating the screw rod 13 and adjusting the protruding length of the screw rod 13, the compression amount of the elastic body 11 can be adjusted. The degree of vibration cancellation can be adjusted by adjusting the compression amount of the elastic body 11. Thereby, even when the center rib part side surface 5a of H steel resonates and the amplitude of vibration becomes large, the elastic body 11 has an effect of canceling each other's vibration.

  In addition, while rotating the screw rod 13, the spring seat 12 also rotates. Here, as shown in FIG. 2, the spring seat 12 has a groove portion 12a for accommodating the end portion of the elastic body 11, and the spring seat 12 rotates in a state where the elastic body 11 is held by the groove portion 12a. . Therefore, the movement of the elastic body 11 in the radial direction can be restricted by the action of the groove portion 12a, and when the adjustment is performed by rotating the screw rod 13, the elastic body 11 does not swing in the radial direction and can be adjusted stably. You will be able to work.

  As described above, according to the first embodiment, the resonance main portion of the machine base (the central rib between the machine bases arranged to face each other is provided via the vibration suppressing means having the elastic body capable of adjusting the compression amount. Part side). As a result, the degree of cancellation of vibration (or sound) due to resonance can be easily adjusted at the installation site, and an elevator hoisting machine support device having a practical configuration can be obtained.

Embodiment 2. FIG.
In the second embodiment, a configuration will be described in which a damping body 16 is further provided to the vibration suppressing means 10 in the first embodiment to increase the effect of suppressing the amplification of sound or vibration due to resonance of the machine base.

  FIG. 3 is an enlarged view of a main part of a support device for an elevator hoist according to Embodiment 2 of the present invention. The vibration suppression means 10 in FIG. 2 according to the second embodiment is further provided with an attenuation body 16 at the end provided with the elastic body 11 as compared with the vibration suppression means 10 in FIG. 1 according to the first embodiment. Is different.

  Such an attenuation body 16 is made of rubber or the like, for example. Thereby, not only the effect of the elastic body 11 by the spring but also the effect of damping the vibration by the damping body 16 can be obtained. As a result, it is possible to reduce sensitivity to vibration.

  FIG. 4 is an enlarged view of a main part of a support device for an elevator hoisting machine having another configuration according to Embodiment 2 of the present invention. In the configuration shown in FIG. 3, the attenuation body 16 is arranged in a positional relationship with the elastic body 11 in series. On the other hand, in the configuration of FIG. 4, the damping body 16 is disposed in a positional relationship in parallel with the elastic body 11. In the configuration of FIG. 4 as well, the sensitivity to vibration can be lowered as in the configuration of FIG.

  As described above, according to the second embodiment, the resonance main part of the machine base (relative to each other) is provided via the elastic body having an adjustable compression amount and the vibration suppressing means having the damping body having an effect of damping the vibration. Are connected between the machine bases arranged in such a manner. As a result, the degree of cancellation of vibration (or sound) due to resonance can be easily adjusted at the installation site, and an elevator hoisting machine support device having a practical configuration can be obtained. Further, by using the elastic body and the damping body in combination, it is possible to lower the sensitivity to vibration than in the first embodiment.

  In addition, the attenuation body in Embodiment 2 mentioned above is not limited to rubber | gum, If it has damping characteristics, such as a hydraulic damper, it can apply and can obtain the same effect.

  Further, in the first and second embodiments described above, the machine base is made of H steel facing each other, and the side surface of the central rib portion between the machine stands arranged so as to face each other is used as a resonance main part, and vibration suppression means is provided therebetween. The case of connecting was explained. However, the present invention is not limited to the case where the machine base is made of H steel, and even in a machine base having another configuration, the vibration suppression means is connected between the resonance main parts of the machine base. The same effect can be obtained.

  DESCRIPTION OF SYMBOLS 1 Hoisting machine, 5 Machine stand, 5a Central rib part side surface (resonance essential part), 10 Vibration suppression means, 11 Elastic body, 12 Spring seat, 12a Groove part, 13 Screw rod, 14 Screw seat, 15 Nut, 16 Damping body .

Claims (3)

A support device for an elevator hoisting machine that suppresses resonance of the machine base by transmitting vibrations generated from the elevator hoisting machine to the machine base,
The machine base has a first resonance main part and a second resonance main part fixedly arranged so as to face each other,
A screw rod ; and an elastic body provided at one end of the screw rod, the compression amount of which is adjustable, and connects between the first resonance main portion and the second resonance main portion of the machine base. A vibration suppressing means for suppressing the mechanical stand from resonating,
The vibration suppressing means is arranged such that the elastic body is in contact with the first resonance main part of the machine base, and the other end of the screw rod is screwed to the second resonance main part. An elevator capable of adjusting the degree of cancellation of vibration between the first resonance main part and the second resonance main part by adjusting the compression amount by rotating the screw rod. Support device for hoisting machine. In the elevator hoisting machine support device according to claim 1,
The machine base is made of opposing H steel, and has a center rib part side surface between the machine bases arranged to face each other as the first resonance main part and the second resonance main part. ,
The said vibration suppression means suppresses that the said machine stand resonates by connecting between the said center rib part side surfaces. The support apparatus of the elevator hoisting machine characterized by the above-mentioned. In the elevator hoisting machine support device according to claim 1 or 2,
The apparatus for supporting an elevator hoisting machine, wherein the vibration suppressing unit further includes a damping body that suppresses resonance of the machine base.

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