HK1130041A - Method for installing anti-vibration device of suspension rod of elevator - Google Patents

Description

Method for mounting vibration-proof device of elevator suspension rod

Technical Field

The present invention relates to a method of installing a suspension bar vibration isolator for an elevator in which a suspension rope connected to an elevator car and a counterweight is supported by a support beam erected on an upper portion of a hoistway via suspension pulleys and a suspension rod, wherein the suspension bar vibration isolator is used to reduce vibration transmitted from the suspension rod to the support beam.

Background

There are many elevators that employ the following structure: a support beam is provided on the upper end side of an elevator car guide rail for guiding the elevator car to move up and down and a counterweight guide rail for guiding the counterweight to move up and down, and a suspension rope connected to the elevator car and the counterweight is supported by the support beam via a suspension pulley and a suspension rod. Therefore, the vibration generated by the lifting operation of the elevator car and the counterweight is transmitted to the support beam through the suspension rod. The vibrations are further transmitted from the support beam to the guide rails and from the guide rails to the building via the guide rail brackets, which can cause the occupants to be disturbed by noise, especially when the room of the occupant is at a short distance from the hoistway of the elevator. Therefore, it is necessary to prevent the transmission of vibration from the suspension bar to the support beam as much as possible. For this reason, there have been proposed solutions in which an elastic body is provided at a connection portion between a support beam for supporting a suspension pulley and a suspension rod for suspending the suspension pulley, for example, to reduce vibration transmitted to the support beam and a building (see, for example, patent documents 1 and 2).

Patent document 1 japanese patent No. 3397733

Patent document 2 Japanese patent application laid-open No. 2006-182491

According to the above-described conventional technique, vibration can be reduced. However, in a few cases, due to structural reasons of the building, there are cases where the vibration transmitted from the suspension bar is transmitted to the support beam and further transmitted from the support beam to the building, so that it is necessary to further reduce the vibration. However, in the conventional technique, when it is necessary to replace the vibration reducing elastic body provided at the connecting portion between the support beam and the suspension rod with a vibration absorbing member having a better vibration absorbing function in the existing elevator equipment, it is necessary to first release the load supported by the suspension rod and then remove the nut or the like for fixing the suspension rod to the support beam, which causes a problem of labor and time consumption in the work.

Disclosure of Invention

The present invention has been made in view of the above problems occurring in the prior art, and an object of the present invention is to provide a method of mounting an elevator suspension rod vibration isolator capable of easily reducing vibration transmission.

In order to achieve the above object, a first aspect of the present invention provides a method of installing an elevator suspension rod vibration isolation device, wherein the elevator comprises: an elevator car and a counterweight which ascend and descend in the ascending and descending passage; a guide rail for an elevator car, which is provided in the hoistway so as to extend in the vertical direction, and guides the vertical movement of the elevator car; a balance weight guide rail vertically provided in the lifting passage so as to extend in the vertical direction, for guiding the lifting movement of the balance weight; a supporting beam erected at the upper part of the lifting channel; a sling suspending the elevator car and the counterweight; a suspension pulley around which the suspension cable is slidably wound; a suspension rod passing through the support beam for suspending the suspension pulley; a nut screwed to the suspension rod for fixing the suspension rod to an upper portion of the support beam; a first backing plate configured to nest within the suspension rod and contact an upper surface of the support beam; an elastic body configured to be fitted into the suspension lever and to be in contact with an upper surface of the first pad; the second base plate is sleeved in the suspension rod and is arranged between the elastic body and the nut; a lock nut provided to be screwed with the suspension bar and contacting an upper surface of the nut, the elevator suspension rod anti-vibration device is used to reduce vibration transmitted from the suspension rod to the support beam, the method for installing an anti-vibration device for an elevator suspension rod is characterized in that after the lock nut is removed from the suspension rod, a spacer with a hole with the size larger than the external size of the nut is sleeved on the lower surface of the suspension rod from the upper end of the suspension rod and covers the nut, then placing an additional elastic body in contact with the upper surface of the spacer, placing an additional pad in contact with the upper surface of the additional elastic body, and screwing an additional nut to the suspension rod, and the additional nut is tightened until the respective deflection amounts of the elastic body and the additional elastic body reach predetermined values.

According to the first aspect of the present invention, after the lock nut is removed from the suspension rod, the spacer is fitted over the upper end of the suspension rod, and the nut is received in the hole formed in the lower surface of the spacer. In this state, the additional elastic body and the additional pad are sequentially fitted from the suspension rod, and the additional nut is screwed until the respective deflection amounts of the original elastic body and the additional elastic body reach predetermined values. Thus, the original nut is spaced apart from the first pad, and the additional nut receives the load, so that the original elastic body and the additional elastic body absorb the vibration. In this way, the additional elastic body can be attached without removing the original nut, that is, in a state where the suspension lever receives a load, and the transmission of vibration can be easily reduced.

In addition, according to a second aspect of the present invention, there is provided a method of mounting an elevator suspension bar vibration isolator, wherein a plurality of the additional elastic bodies are provided so as to overlap each other.

According to the second aspect of the present invention, by providing a plurality of the additional elastic bodies so as to overlap with each other, transmission of vibration can be further reduced.

According to the present invention, it is possible to prevent vibration from being transmitted to a building with a simple structure of attaching an additional elastic body, thereby improving comfort, and to greatly reduce labor and time required for work by attaching the additional elastic body without removing an original nut, that is, in a state where a load is applied to a suspension rod when attaching the additional elastic body.

Drawings

Fig. 1 is a schematic configuration diagram showing an embodiment of a method of mounting an elevator suspension bar vibration isolator according to the present invention.

Fig. 2 is a front view of a support beam portion of an elevator installation.

Fig. 3 is a side view of a support beam portion of an elevator installation.

Fig. 4 is an enlarged view of a main part of the suspension lever portion.

Fig. 5 is an enlarged view of an essential part of a suspension rod part when a spacer, an additional elastic body, an additional pad, and an additional nut are attached.

Fig. 6 is an enlarged view of an essential part of a portion of the suspension lever to which the additional nut is attached and which is screwed together with the lock nut.

Fig. 7 is a plan view of the spacer as viewed from above.

Figure 8 is a side view of a spacer.

Fig. 9 is a plan view of the spacer as viewed from below.

Fig. 10 is an enlarged view of a part of a suspension rod portion showing another embodiment of the method of attaching an anti-vibration device for an elevator suspension rod according to the present invention.

Description of the symbols

1 lifting channel

2 Elevator car

3 balance weight

4 guide rail bracket

5 guide rail

6 supporting beam

7 suspension cable

8 hanging pulley

9 support body

10 suspension rod

11 nut

12 first pad

13 elastomer

14 second backing plate

15 locking nut

16 cotter pin

20 spacer

21, 21a, 21b additional elastic body

22 additional backing plate

23 additional nut

Detailed Description

An embodiment of a method of attaching an elevator suspension rod vibration isolation device according to the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural view showing an embodiment of a method of mounting an elevator suspension bar vibration isolator according to the present invention, fig. 2 is a front view of a support beam portion of an elevator apparatus, fig. 3 is a side view of the support beam portion of the elevator apparatus, fig. 4 is an enlarged view of an essential portion of a suspension bar portion, fig. 5 is an enlarged view of an essential portion of the suspension bar portion when a spacer, an additional elastic body, an additional shim plate, and an additional nut are mounted, fig. 6 is an enlarged view of an essential portion of the suspension bar portion when the additional nut is mounted and a lock nut is screwed together, fig. 7 is a plan view when a spacer is viewed from above, fig. 8 is a side view of the spacer, and fig. 9 is a plan view when the spacer is.

As shown in fig. 1, 2 and 3, a conventional elevator apparatus includes: a lifting body, namely an elevator car 2 and a balance weight 3, which can lift in the lifting channel 1; a guide rail 5 installed on the hoistway wall 1a by a guide rail bracket 4, the guide rail 5 for guiding the elevator car 2 and the balance weight 3 up and down; a support beam 6 mounted on the upper part of the guide rail 5; a suspension rope 7 suspending the elevator car 2 and the counterweight 3; a suspension pulley 8 around which the suspension rope 7 is slidably wound; a support body 9 that rotatably supports the suspension pulley 8; suspension rods 10, the lower ends of which suspension rods 10 are connected to the support body 9 at two left and right positions of the support body 9 and which penetrate the support beam 6; a nut 11, the nut 11 being screwed to the suspension rod 10 to fix the suspension rod 10 to the upper portion of the support beam 6; a first pad 12 which is set into the suspension lever 10 and contacts the upper surface of the support beam 6; an elastic body 13 which is provided to be fitted over the suspension lever 10 and is in contact with the upper surface of the first pad 12; a second pad 14 which is fitted into the suspension lever 10 and is disposed between the elastic body 13 and the nut 11; a lock nut 15, the lock nut 15 being provided to be screwed with the suspension bar 10 and being in contact with an upper surface of the nut 11; a cotter pin 16, the cotter pin 16 being mounted on the upper end of the suspension bar 10.

In the conventional elevator apparatus having the above-described configuration, when the vertically movable bodies 2 and 3 are moved vertically, vibration is transmitted from the suspension rod 10 to the support beam 6 and from the support beam 6 to the hoistway wall 1a, and therefore, in some cases, it is necessary to further reduce the vibration.

For this reason, as shown in fig. 5 and 6, the present embodiment includes: a spacer 20 which is provided to be fitted into the suspension bar 10 and is in contact with the upper surface of the second pad 14; an additional elastic body 21, the additional elastic body 21 being disposed to fit over the suspension rod 10 and contacting the upper surface of the spacer 20; an additional pad 22, the additional pad 22 being disposed to fit over the suspension rod 10 and contacting the upper surface of the additional elastic body 21; and an additional nut 23, wherein the additional nut 23 is screwed with the suspension rod 10 and contacts with the upper surface of the additional pad 22.

As shown in fig. 7, 8 and 9, the lower surface of the spacer 20 is provided with a hole 20a, the diameter of the hole 20a is larger than the outer dimension of the nut 11, that is, the width dimension of the nut 11, and the depth dimension of the hole 20a is larger than the height dimension of the nut 11. Further, the outer diameter of the spacer 20 is set smaller than the outer diameter of the second backing plate 14.

The following describes the operation steps of the method for attaching the suspension bar vibration damping device according to the present embodiment.

First, the cotter 16 is detached from the suspension bar 10, and the lock nut 15 is detached from the suspension bar 10, resulting in the state shown in fig. 4. Then, as shown in fig. 5, the spacer 20 is fitted into the suspension rod 10 from the upper end of the suspension rod 10, and the nut 11 is received in the hole 20a formed in the lower surface of the spacer 20. In this state, the suspension rod 10 is fitted with the additional elastic body 21 and the additional pad 22 in this order, and the additional nut 23 is screwed. Next, the additional nut 23 is tightened until the respective deflection amounts of the original elastic body 13 and the additional elastic body 21 reach a predetermined value h. At this time, the operator confirms whether or not both the deflection amounts of the elastic bodies 13 and 21 have reached the predetermined value h, and confirms whether or not the clearance δ between the support beam 6 and the suspension pulley 8 and the distance L from the first pad 12 to the upper end of the suspension rod 10 have reached δ -n and L + n shown in fig. 6, respectively. The above confirmation is performed in order to confirm whether or not a gap is left between the nut 11 and the first shim plate 12 in the hole 20a of the spacer 20, and whether or not the additional nut 23 receives a load and the additional elastic body 13 and the additional elastic body 21 absorb vibrations, respectively. Thereafter, as shown in fig. 6, in order to prevent the rotation of the additional nut 23, the locknut 15 is screwed to the suspension rod 10, and finally the cotter pin 16 is attached to end the operation.

According to the present embodiment, the comfort can be improved by preventing the vibration from being transmitted to the building by attaching the additional elastic body 21 with a simple structure, and the additional elastic body 21 can be attached in a state where the original nut 11 is not required to be detached when attaching the additional elastic body 21, that is, the load is received on the suspension lever 10, so that the labor and time required for the work can be greatly reduced.

Fig. 10 is an enlarged view of a part of a suspension rod portion showing another embodiment of the method of attaching an anti-vibration device for an elevator suspension rod according to the present invention. In fig. 10, the same portions as those described above are denoted by the same reference numerals.

In the method of attaching the suspension bar vibration damping device of the other embodiment shown in fig. 10, after the spacer 20 is attached in the same procedure as in the above-described embodiment, the suspension bar 10 is fitted with the two additional elastic bodies 21a and 21b, and the two additional elastic bodies are overlapped with each other. Then, the additional shim plate 22 and the additional nut 23 are attached in the same manner as in the above embodiment.

According to this other embodiment, by providing the plurality of additional elastic bodies 21a and 21b so as to overlap, the transmission of vibration can be further reduced. In the other embodiment, the two additional elastic bodies 21a and 21b are provided as an example, but the present invention is not limited to this, and a plurality of additional elastic bodies may be provided as long as the size of the suspension lever 10 allows.

Claims (2)

1. A method of installing an elevator suspension rod vibration isolator, wherein the elevator comprises: an elevator car and a counterweight which ascend and descend in the ascending and descending passage; a guide rail for an elevator car, which is provided in the hoistway so as to extend in the vertical direction, and guides the vertical movement of the elevator car; a balance weight guide rail vertically provided in the lifting passage so as to extend in the vertical direction, for guiding the lifting movement of the balance weight; a supporting beam erected at the upper part of the lifting channel; a sling suspending the elevator car and the counterweight; a suspension pulley around which the suspension cable is slidably wound; a suspension rod passing through the support beam for suspending the suspension pulley; a nut screwed to the suspension rod for fixing the suspension rod to an upper portion of the support beam; a first backing plate configured to nest within the suspension rod and contact an upper surface of the support beam; an elastic body configured to be fitted into the suspension lever and to be in contact with an upper surface of the first pad; the second base plate is sleeved in the suspension rod and is arranged between the elastic body and the nut; a lock nut provided to be screwed with the suspension bar and to be in contact with an upper surface of the nut, the elevator suspension bar vibration damping device for reducing vibration transmitted from the suspension bar to the support beam,

the method of installing an elevator suspension rod vibration isolator is characterized in that,

after the lock nut is taken off from the suspension rod, a spacer with a hole whose lower surface is larger than the external dimension of the nut is sleeved on the upper end of the suspension rod, the spacer covers the nut, an additional elastic body is placed and contacted with the upper surface of the spacer, an additional backing plate is placed and contacted with the upper surface of the additional elastic body, the additional nut is screwed with the suspension rod, and the additional nut is screwed until the deflection amount of each of the elastic body and the additional elastic body reaches a specified value.

2. The method of installing an elevator suspension rod vibration isolator as claimed in claim 1,

a plurality of the additional elastic bodies are arranged in an overlapping manner.