JP2630188B2 - Damping damper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is installed between structures or structural members which are structurally insulated and cause relative displacement,
The present invention relates to a vibration damper for absorbing vibration energy having different directions and strengths generated in respective structures due to wind or the like.

[0002]

[Prior Art] With the enforcement of the New Seismic Design Law in June 1981, the importance of the safety of structures against earthquakes, winds, etc. has been emphasized, and seismic dampers with greater energy absorption capacity are needed. Became. As a vibration damper used for such a purpose, there is a damper disclosed in Japanese Patent Application Laid-Open No. Hei 4-185928. That is, the publication discloses a connecting portion for fastening one end of a pair of damper hardware to each other, rotatably fitting a bearing member to the fastening portion, and connecting the other end of both damper hardware to one structure. There is disclosed a vibration damper in which a bearing portion is formed and a connecting portion for connecting to another structure is formed on a bearing member.

[0003]

In the above conventional vibration damper, since the bearing member is rotatably fitted to the fastening portion of the two damper hardware, only the bending moment acts on the two damper hardware and the torsion is applied. Although no moment is applied, the structure analysis is simple and reliable, which is preferable. However, there is no specific disclosure of a means for ensuring the sliding of the rotary sliding surface between the damper hardware and the bearing member. In order to minimize the rotation constraint on rotating mechanical parts, oil,
Generally, sliding is ensured by enclosing grease or the like. However, vibration dampers are often installed outdoors or at high places.Therefore, they can be easily disassembled and inspected to confirm the presence of oil and grease. Otherwise, there is a possibility that the function of rotary sliding is lost due to aging and the stable performance cannot be exhibited. Therefore, an object of the present invention is to provide a vibration damper capable of significantly reducing maintenance work such as disassembly, inspection, and replenishing oil of a rotating mechanism portion over the life of a structure (60 years or more).

[0004]

According to the present invention, a fastening portion of each damper hardware is formed by a stepped flange having a large diameter portion on the inside in the axial direction and a small diameter portion on the outside in the axial direction.
A large-diameter hole facing the outer peripheral surface of each large-diameter portion of the stepped flange of both damper hardware, and a small-diameter hole disposed inside the large-diameter hole and facing the outer peripheral surface of each small-diameter portion of the stepped flange. The lubricating bearing sheet formed by embedding a metal wire mesh in a fluororesin sheet is interposed on the sliding surface between the fastening part of both damper hardware and the bearing member. It has been achieved. In this case, a seal member for sealing the oil-free bearing sheet from the outside can be interposed between the fastening portion of both damper hardware and the bearing member.

[0005]

Since the sliding surface of the sliding surface between the fastening portion of the two damper hardware and the bearing member is secured by the oilless bearing sheet, the maintenance work of the rotating mechanism can be significantly reduced. Further, if a seal member for sealing the oil-free bearing sheet is interposed, deterioration of the bearing portion and the oil-free bearing sheet can be prevented.

[0006]

EXAMPLES The present invention will be described with reference to examples. Figures 1-3
1 shows an embodiment of a vibration damper according to the present invention. Each of the pair of damper hardwares 1 and 1 has a drum-shaped body portion 2, and a flange 3 is provided at one end of the body portion 2, and the flanges 3 and 3 of each damper hardware are of the first structure. It is fixed to overhang members 10a, 10a which overhang from above and below.
At the other end of the body 2 of the damper hardware, there is formed a stepped flange 4 having a large-diameter portion 4a on the inside in the axial direction and a small-diameter portion 4b on the outside. Stepped flange of both damper hardware 4,
4 are fastened to each other by bolts 5a and nuts 5b, and the bearing members 6 are fitted to the fastened stepped flanges 4 and 4, respectively. That is, the bearing member 6 includes large-diameter holes 6a, 6a facing the outer peripheral surfaces of the large-diameter portions 4a, 4a of the stepped flanges of both damper hardware, and the large-diameter holes 6a, 6a.
Small diameter portions 4b, 4b of stepped flanges
b having a small-diameter hole 6b facing the outer peripheral surface. On the outer surface of the bearing member 6, a pair of connecting portions 6c, 6c separated from each other by 90 ° in the circumferential direction are provided, and each connecting portion 6c is connected to one end of a connecting rod 11b by a pin 11a having a horizontal axis. The other end of the connecting rod 11b is connected to the second structure by a pin having a horizontal axis.

The sliding surfaces between the stepped flanges 4 and 4 of both damper hardware and the bearing member 6, that is, between the outer peripheral surfaces of the small diameter portions 4b and 4b of the stepped flange and the small diameter holes 6b of the bearing member, and Step surfaces between the large diameter portions 4a, 4a and the small diameter portions 4b, 4b of the stepped flange, and the large diameter holes 6a, 6 of the bearing member.
A pair of flanged short cylindrical lubrication-free bearing seats 7, 7 are interposed between a and the step surface of the small diameter hole 6b. As shown in FIG. 4, the oil-free bearing sheet 7 has a mesh 7a made of a copper alloy, which is buried on one side of a sheet 7b made of a fluororesin, and the other side of the sheet 7b is used as a sliding surface. Is what you do. However, stainless steel can also be used as the material of the mesh 7a. Oilless bearing seats 7, 7 are provided between the outer peripheral surfaces of the large diameter portions 4a, 4a of the stepped flange and the large diameter holes 6a, 6a of the bearing member.
Seal rings 8 and 8 are provided to seal the seal ring from the outside. The seal rings 8 and 8 are formed of a tubular silicone resin, and are fixed by ring-shaped mounting members 9 and 9.

This embodiment is configured as described above.
That is, the bearing member 6 is rotatably fitted to the stepped flanges 4, 4 of the two damper hardware 1, 1 fastened and integrated by the bolt 5a and the nut 5b. No bending moment is applied to the flanges 3 and 3 but only bending moment.
Since the oil-free bearing sheets 7, 7 are interposed on the sliding surfaces between the stepped flanges 4, 4 and the bearing member 6, the sliding surfaces can be secured without repair. That is, even when the bearing member 6 and the stepped flanges 4 and 4 slide repeatedly in a low cycle due to vibration energy, seizure of the sliding surface can be prevented. Further, since the seal rings 8, 8 for sealing the oil-free bearing sheets 7, 7 are provided, it is possible to prevent rainwater, dust and the like from entering the sliding surface, to prevent rust from being generated, and to prevent vibration damping. Durability is improved. Although the non-lubricated bearing sheets 7, 7 in the above embodiment are formed in a short cylindrical shape with a flange, they can be formed in a short cylindrical shape without a flange as shown in FIG. The oil-free bearing sheets 7 and 7 shown in FIG. 5 have small diameter holes 6b of the bearing member and small diameter portions 4b and 4 of the stepped flange.
b, but are formed separately from each other, but may be integrated into one oilless bearing seat.

FIG. 6 shows an example in which the vibration damper of this embodiment is applied to an indoor ski resort. Indoor ski slopes are elongated and have large differences in elevation, so they are structurally divided into a plurality of structures. For this reason, the vibration cycle of each structure is different, and the building may be twisted during an earthquake, resulting in damage to the structural frame. Thus, for example, by connecting the first structure 10 and the second structure 11 with the vibration damper according to the present embodiment, it is possible to build a building having a shape that cannot be achieved by the conventional integrated construction method.

[0010]

According to the present invention, the maintenance work for ensuring the sliding of the sliding surface between the fastening portion of both damper hardware and the bearing member can be significantly reduced. Further, if a seal member for sealing the oil-free bearing sheet is interposed, deterioration of the bearing portion and the oil-free bearing sheet can be prevented.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing one embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is an enlarged partial sectional view of a main part of the embodiment.

FIG. 4 is a sectional view showing an oilless bearing seat of the embodiment.

FIG. 5 is an enlarged partial sectional view of a main part of another embodiment.

FIG. 6 is a schematic front view showing an application example of a vibration damper.

[Explanation of symbols]

1. Damper hardware 2. Trunk 3
... Flange 4 ... Stepped flange 4a ... Large diameter part 4
b: small diameter part 5a: bolt 5b: nut 6
... bearing member 6a ... large diameter hole 6b ... small diameter hole 6
c: Connection part 7: Oil-free bearing sheet 7a: Copper alloy mesh 7
b: Fluororesin sheet 8: Seal ring 9: Mounting member 10: First structure 10a: Overhang member 11: Second structure 11a: Pin 1
1b ... connecting rod

 ──────────────────────────────────────────────────の Continuing from the front page (72) Mitsuo Sakamoto, Inventor Kashima Construction Co., Ltd. 1-2-7 Moto Akasaka, Minato-ku, Tokyo (72) Inventor Shunichi Yamada 1-2-7 Moto Akasaka, Minato-ku, Tokyo Within Kashima Construction Co., Ltd. (72) Jun Yamada, inventor 2-4-2, Toyo, Koto-ku, Tokyo Hitachi Koki Co., Ltd. (72) Minoru Kitamura 2-4-2, Toyo, Koto-ku, Tokyo Hitachi Koki Co., Ltd. (72) Inventor Hidefumi Kuwana 1-9-1 Kitahama-ku, Wakamatsu-ku, Kitakyushu-shi, Fukuoka Hitachi Metals, Ltd. Wakamatsu Plant (56) References JP-A-3-168427 (JP, A) 111702 (JP, U) Actually open 63-95709 (JP, U)

Claims (2)

(57) [Claims] An end of a pair of damper hardware is fastened to each other, a bearing member is rotatably fitted to the fastening portion, and a connecting portion for connecting to one structure is formed at each other end of both damper hardware. And, in the vibration damper having the bearing member formed with a connecting portion to be connected to another structure, the fastening portion of each damper hardware is formed by an axially inner large-diameter portion.
Formed by a stepped flange consisting of
And the bearing member is positioned in front of the stepped flanges of both damper hardware.
A large-diameter hole facing the outer peripheral surface of each large-diameter portion;
The outer peripheral surface of each of the small diameter portions of the stepped flange disposed on the side
Are formed so as to have a small-diameter hole opposed to the sliding surface between the fastening portion of both damper hardware and the bearing member,
Formed by embedding a metal wire mesh in a fluororesin sheet
Seismic dampers, wherein the oilless bearing sheets that are interposed. 2. The vibration damper according to claim 1, wherein a seal member for sealing the oil-free bearing sheet from the outside is interposed between a fastening portion of both damper hardware and the bearing member.