JPH0681873A - Absorbing device for periodic energy - Google Patents

Abstract

PURPOSE:To provide an absorbing device for periodic energy applied to an earthquake resistant element of a building or a damper element of a machine, vehicle, etc., for the purpose of absorbing and relaxing the periodic energy in which an earthquake input or force, alternately changing a level and direction similarly to this earthquake input, acts. CONSTITUTION:In an absorbing device for periodic energy wherein an inner plate 1 and outer plates 2, 2 of interposing both external side surfaces of this inner plate are piled together slidably in a relatively sliding relation to fasten these plates by a high strength bolt 3 and nut 4, recessed grooves 5 for a solid lubricant possible to flow in or out are formed in at least one contact surface of these inner and outer plates 1, 2. In this way, a suitable amount of the solid lubricant or the like is always supplied between the plates, to maintain favorable slide moving between the plates, and since scuffing is prevented from its generation, the device can be used in an earthquake resistant element of a building or a damper element of a machine, vehicle, etc., with a high quality, accuracy and reliability.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is intended to absorb or mitigate periodic energy exerted by an earthquake input or a force whose magnitude and direction change in an alternating manner. The present invention relates to a periodic energy absorbing device applied to a damper element such as a vehicle.

[0002]

2. Description of the Related Art For example, as a seismic control mechanism such as a PCa seismic wall or a PCa plate with steel braces, which is used for controlling lateral shaking of a building or improving seismic resistance and wind resistance of a building, it has been widely used. In addition to the piston-cylinder type lead damper and the like, there is a damping damper for high-strength bolt application, which is described in JP-A-2-209572, particularly in FIGS. 10 and 11. The configuration is as shown in FIG. 1A.
The inner plate 1 and the outer plates 2 and 2 that sandwich the outer side surfaces of the inner plate 1 that are relatively slidable are slidably overlapped with each other, and they are directly and strongly tightened with a high-strength bolt 3 and a nut 4.

[0003]

The seismic damper (see FIG. 1A) to which the above-mentioned high-strength bolt is applied is the result of the sliding of the inner plate 1 and the outer plate 2, resulting in galling, seizure or squeaking noise due to friction ( Noise) is generated.
Also, the contact area between the two becomes uneven due to wear,
There are problems that the surface pressure becomes unstable and the energy absorption effect varies, and the durability during long service life deteriorates, and these problems are problems to be solved.

[0004]

As means for solving the above problems, the periodic energy absorbing device according to the present invention sandwiches the inner plate 1 and both outer side surfaces thereof as shown in the drawings. In the periodic energy absorbing device in which the outer plates 2 and 2 are slidably overlapped with each other in a relatively sliding relationship and fastened by the high-strength bolt 3 and the nut 4, the inner plate 1 and the outer plate 2 are At least one of the contact surfaces is formed with a concave groove 5 into which a solid lubricant or the like can flow in or out.

Further, in the above-mentioned periodic energy absorbing device, the concave groove 5 is characterized in that it is formed in a cross shape which is non-parallel to the relative sliding direction between the plates. In addition,
It is also characterized in that at least one of the contact surfaces of the inner plate 1 and the outer plate 2 is formed as a rough surface having a constant roughness.

[0006]

Since the concave groove 5 that allows the inflow or outflow of the solid lubricant or the like is formed on the contact surface of at least one of the inner plate 1 and the outer plate 2 (FIGS. 1 and 3), sliding between the plates causes The scraped solid lubricant or the like (treated on the plate surface) flows into the concave groove 5, a temporary retreat place can be secured, and a stable sliding surface can be maintained. The solid lubricant or the like staying in the concave groove 5 flows backward from the concave groove 5 due to the sliding between the plates, and then enters between the inner plate 1 and the outer plate 2 again, so that an appropriate amount of solid lubricating The agent or the like is constantly supplied between the plates, and smooth sliding between the plates is maintained, so that frictional noise between the plates and galling are reliably prevented.

Since the concave groove 5 is formed in an intersecting shape which is not parallel to the relative sliding direction between the plates (see FIG. 2,
4) The solid lubricant or the like generated by being scraped in the sliding direction between the plates smoothly flows in and out of the concave groove 5.
Since the contact surface of at least one of the inner plate 1 and the outer plate 2 is formed as a rough surface with a constant roughness,
The adhesion between the plate and the solid lubricant is improved, and the plate can withstand sliding for a long time and has a stable energy absorption effect.

[0008]

Embodiments of the present invention shown in the drawings will be described below. In the periodic energy absorbing device shown in FIG. 1, one inner plate 1 and two outer plates 2 and 2 sandwiching both outer surfaces thereof are slidably overlapped in a relatively sliding relationship. And these are fastened with high-strength bolts 3 and nuts 4. That is, the high strength bolt 3
In a direction substantially perpendicular to the sliding direction of the inner plate 1,
The inner plate 1 is passed through the outer plates 2 and 2 in a direction substantially in the center of the guide groove 14 and fastened and fixed by a nut 4. The inner plate 1 and the outer plate 2 are manufactured as assembled products such as steel or cast steel or cast products. A connector plate 11 is connected by bolts 9 and nuts 10 to the ends of the outer plates 2 and 2 that sandwich the inner plate 1 on the opposite side to the inner plate 1, and the bolt holes 12 of the connector plate 11 and the inner plate 1 The bolt holes 13 at the outer end are connected to corresponding parts of an element for transmitting periodic energy, for example a seismic element of a building or a damper element such as a machine or a vehicle.

The contact surface between the inner plate 1 and the outer plate 2 is treated with a solid lubricant or the like (not shown). This is to lubricate the sliding between the plates to prevent the generation of friction noise and galling between the plates, and to maintain smooth sliding. The solid lubricant is composed of, for example, manganese phosphate and Molykote 321R (trade name), which is thickly rubbed on the contact surface of the inner plate 1 (or the outer plate 2). Therefore, at least one contact surface of the inner plate 1 and the outer plate 2 is formed with a concave groove 5 into which the solid lubricant or the like scraped by sliding between the plates can flow in or out (FIG. 1B). . FIG. 2 shows a case where the concave groove 5 is formed on the inner plate 1 side. The groove width of the concave groove 5 is about 2 to 3 m.
It is about m and its depth is about 1 to 2 mm. The cross-sectional shape is formed in an inverted triangular groove (FIG. 3A), a semicircular groove (FIG. 3B), a square groove (FIG. 3C), and an inverted trapezoidal groove (FIG. 3D), as shown in an enlarged view in FIGS. (However,
The size and shape of the groove 5 are not limited to these. The arrangement of the groove 5 is not parallel to the sliding direction (arrow direction) between the plates as shown in FIG.
It is formed by intersecting the direction of. In addition, for example, as shown in FIG. 4A, they may be formed in parallel in several rows in a direction substantially perpendicular to the relative sliding direction between the plates, or as shown in FIG. 4B, the inner plate 1 (or the outer plate 2). Those having a plurality of circular shapes that can be drawn on the surface of are also carried out.

Therefore, the solid lubricant or the like scraped by the relative sliding between the plates due to the external force such as the earthquake input flows into the concave groove 5 formed in the cross shape which is not parallel to the sliding direction of the plates. To be done. The recessed groove 5 serves as a so-called temporary retreat for the scraped solid lubricant or the like, and can maintain a stable sliding surface. Moreover, the solid lubricant or the like staying in the recessed grooves 5 also flows out from the recessed grooves 5 in reverse due to further sliding between the plates, and again enters between the plates to serve as a lubricant. Further, the solid lubricant or the like can be carried out by pre-filling the concave groove 5 without treating the plate surface as described above. It enters and is effectively used as a lubricant. Therefore, when the inner plate 1 and the outer plate 2 slide, an appropriate amount of solid lubricant or the like is always supplied between the plates, the lubricated sliding is maintained, and the friction noise and galling between the plates are reliably prevented.

[0011]

[Second Embodiment] At least one of the contact surfaces of the inner plate 1 and the outer plate 2 having a rough surface of about 5S to 20S (not shown) is also carried out in the same manner as in the above embodiment. It produces a working effect. It is possible to temporarily inflow, withdraw, or outflow the scraped solid lubricant, etc. into the concave part of the rough surface of the plate, improve the adhesion between the plate and the solid lubricant, etc., and endure long-term sliding Have sex.

[0012]

EFFECTS OF THE INVENTION The periodic energy absorbing device according to the present invention is such that a proper amount of solid lubricant or the like is constantly supplied between the plates, and the sliding between the well-lubricated plates is maintained, which may cause galling. Since fricative noise is prevented, the characteristic curve of energy absorption is stable and beautiful, and it can be used as a seismic resistant element for buildings or a damper element for machines, vehicles, etc., with high quality, accuracy and reliability.

[Brief description of drawings]

1A and 1B are a cross-sectional view and a plan view of a device for absorbing periodic energy according to the present invention.

FIG. 2 is a plan view of an inner plate.

3A to 3D are cross-sectional views of concave grooves.

4A and 4B are plan views of different inner plates.

[Explanation of symbols]

 1 Inner plate 2 Outer plate 3 High strength bolt 4 Nut 5 Groove

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Takahashi, Kenji Takahashi, 21-21, Ginza, Chuo-ku, Tokyo Stock company Takenaka Corporation Tokyo Main Store (72) Inventor, Yasuo Higashibata, 2-5, Minamisuna, Koto-ku, Tokyo No. 14 Stock Company, Takenaka Corporation Technical Research Institute (72) Inventor Yutaka Nanami 1 of 547 Horinouchi, Kikugawa-cho, Ogasa-gun, Shizuoka Prefecture 1 Asahi Tec Co., Ltd. (72) Inventor Junichi Masuda 547, Horinouchi, Kikugawa-cho, Ogasa-gun, Shizuoka Prefecture 1 Asahi Tech Co., Ltd. (72) Inventor Yoshimi Ochiai 1 Asahi Tech Co., Ltd. 547, Horinouchi, Kikugawa-cho, Ogasa-gun, Shizuoka Prefecture

Claims (3)

[Claims] 1. An apparatus for absorbing periodic energy, in which an inner plate and an outer plate sandwiching both outer surfaces thereof are slidably overlapped with each other in a relatively sliding relationship, and these are fastened with high-strength bolts and nuts. In the periodic energy absorbing device, a groove is formed on at least one of the contact surfaces of the inner plate and the outer plate to allow inflow or outflow of a solid lubricant or the like. 2. The apparatus for absorbing periodic energy according to claim 1, wherein the concave groove is formed in a cross shape that is non-parallel to a relative sliding direction between the plates. 3. An apparatus for absorbing periodic energy in which an inner plate and an outer plate sandwiching both outer surfaces thereof are slidably overlapped with each other in a relatively slidable relationship, and these are fastened with high-strength bolts and nuts. In the periodic energy absorbing device, the contact surface of at least one of the inner plate and the outer plate is formed as a rough surface having a constant roughness.