JPH0585902U - Movable bearing - Google Patents

Abstract

(57) [Summary] [Purpose] Large bridges such as connecting bridges between buildings and event halls,
Movable bearings for supporting structures such as pipes of oil plants must be capable of being displaced with respect to any horizontal displacement and have a function of preventing floating. A bottom plate having a base portion fixed to one of the structures and a guide protrusion wall protruding in parallel from the base portion,
It has a sliding shaft body that is laid between the guide portions of the guide projection wall and is movable along the guide portion, and a guide hole that is fixed to the other structure and through which the sliding shaft body penetrates. And a movable support column which is slidably arranged in the axial direction with respect to the shaft body.

Description

[Detailed description of the device]

B. Purpose of the invention (1) Industrial field of application This invention relates to a support for supporting structures such as bridges between buildings, large roofs of event halls, pipes of oil plants, etc. This relates to a movable bearing that allows displacement in all directions in the horizontal direction and restrains it when the structure rises.

(2) Conventional Technology Conventionally, in a movable bearing used for a bridge, a function of permitting expansion and contraction of an upper structure such as a bridge girder in the bridge axial direction and an upper lift force acting on the upper structure have been commonly used. It is equipped with the function of receiving the information. Then, with respect to the upper lift acting on the upper structure, it is generally fixed to the lower structure such as a bridge pier by being fixed to the upper structure by the convex portions protruding at both ends in the direction perpendicular to the bridge axis of the lower shoe. The structure is adopted to receive by the side block fixed to the upper surface of the upper shoe.

However, in an inter-building connecting bridge, for example, the building structures that face each other individually vibrate based on their natural vibration characteristics, so that the bridge girders of the connecting bridge are not only in the bridge axis direction but also in the bridge axis orthogonal direction. Since it is largely displaced, and vertical vibration is also applied, it is not possible to cope with it with the conventional bearing structure with a floating function.

(3) Problems to be Solved by the Invention The present invention has been made in view of the above-mentioned circumstances, and allows any displacement in the horizontal direction and enables the floating prevention function to be effective. The purpose is to obtain the support that can be exerted.

B. Configuration of the Invention (1) Means for Solving Problems The movable bearing of the invention adopts the following technical means (configuration) in order to achieve the above object. That is, the first main structure of the present invention is a bearing that is interposed between the upper structure and the lower structure and allows displacement of the upper structure in all horizontal directions. A base part fixed to the base part, two projecting walls provided so as to project from the base part and extending in parallel with each other at a predetermined distance, and facing each other along the longitudinal direction of the projecting wall. A bottom plate having a guide part; a sliding shaft body that is laid across the guide parts of the projecting walls facing each other perpendicular to the projecting wall, and is movable along the guide part; A movable column that is fixed to a structure, has a guide hole through which the sliding shaft penetrates, and is arranged so as to be movable in the axial direction with respect to the sliding shaft. It

A second main structure of the present invention is a bearing which is interposed between the upper structure and the lower structure and allows displacement of the upper structure in all horizontal directions. A base portion fixed to an object and having a smooth surface, two projecting walls provided so as to project from the base portion and extending in parallel with each other across the smooth surface, and facing each other along the longitudinal direction of the projecting wall. And a bottom plate having a guide portion extending parallel to the smooth surface; and a bridge extending perpendicularly to the protrusion wall between the guide portions of the projecting walls facing each other of the bottom plate. A sliding shaft body that is movable along the same; and a guide hole that is fixed to the other structure and that has a lower surface slidably arranged on the smooth surface of the bottom plate and through which the sliding shaft body passes. And a movable column that is arranged so as to be movable in the axial direction with respect to the sliding shaft; It

(2) Action When a relative displacement in the horizontal direction occurs between the upper structure and the lower structure, the uniaxial component of the displacement is caused by the movable support column moving along the sliding shaft body. The horizontal component of the displacement is allowed in any direction due to the sliding shaft moving along the guide portion of the guide projection wall. The uniaxial movement of the superstructure is allowed over the length between the guide projection walls of the sliding shaft. Further, the movement in the right angle direction is allowed over the length of the guide portion of the guide projection wall. When an excessive lift force is generated in the upper structure, the lifting is prevented by the engagement between the guide hole of the movable column and the sliding shaft body, and the engagement between the sliding shaft body and the guide part of the bottom plate. It

(3) Embodiment An embodiment of the movable bearing of the present invention will be described with reference to the drawings. (Structure of Embodiment) FIGS. 1 to 3 show an embodiment of the movable support S according to the present invention. That is, FIG. 1 shows the overall plan configuration of the movable bearing S, and FIGS. 2 and 3 show the cross-sectional configuration and side configuration thereof.

As shown in these drawings, B is a lower structure such as a building structure, and G is an upper structure such as a connecting bridge that is bridged between the building structures. The movable bearing S is interposed between the lower structure B and the upper structure G, supports the load of the upper structure G, and allows displacement of the upper structure G in all horizontal directions.

Thus, the movable bearing S is fixed to the bottom structure 1 placed and fixed on the lower structure B, the sliding shaft body 2 moving along the bottom structure 1, and the upper structure G. , A movable support column 3 which is placed on the bottom plate 1 and moves along the sliding shaft body 2, and the main components thereof.

The detailed configuration of each unit will be described below. Bottom plate 1 The bottom plate 1 includes a base portion 10 having a rectangular flat plate shape (in the present embodiment, a square), and a rectangular protruding wall provided on both sides of the base portion 10 in the X direction in FIG. 1 over the entire length in the Y direction. It consists of 11 and. The base portion 10 and the projecting wall 11 maintain a predetermined thickness, and have sufficient bearing capacity and impact resistance strength. The upper surface of the base portion 10 is a smooth surface, but in this embodiment, a steel plate, particularly a stainless steel plate 13 is attached. Each of the projecting walls 11 has a guide hole 15 which is an aspect of a guide portion penetrating in the X direction and has a certain width in the height direction of the projecting wall and has a predetermined width in the longitudinal direction (Y direction). It has a length. Both end surfaces in the longitudinal direction of the guide hole 15 are formed into arc surfaces.

Sliding shaft body 2 The sliding shaft body 2 is a round bar having a diameter smaller than the width of the guide hole 15 and a length longer than the width between the two protruding walls 11 of the bottom plate 1 as a base body. Both ends thereof slightly project from both projecting walls 11, and a flange 17 having a diameter larger than the width of the guide hole 15 is fixedly provided at the projecting ends. Between the sliding shaft body 2 and the guide hole 15, a cylindrical bearing 18 having a sliding surface on the outer peripheral surface is fixed to the sliding shaft body 2 at its inner circumference, and its outer circumference is slidably contacted with the guide hole 15. It is distributed. The sliding shaft body 2 has sufficient strength. Then, the sliding shaft body 2 is fitted and inserted into the guide hole 15 of the bottom plate 1 via the bearing 18, and the flanges 17 at both ends are fixed to the outside of the projecting wall 11 with some margin. As a result, the sliding shaft body 2 is only allowed to move in the Y direction.

Movable Strut 3 The movable strut 3 is integrally formed on the upper surface of the pillar body 20 with a square pillar-shaped pillar body 20, a sliding member 21 and a seal member 22 arranged on the lower surface of the pillar body 20. And a flange 23 that is formed. A guide hole 24 is formed through the support column 20.

More specifically, the sliding member 21 arranged on the lower surface of the column body 20 has a disk shape, and a part of the sliding member 21 is embedded in a disk-shaped recess 26 formed on the lower surface of the column body 20. It is fixed and a part of it projects from the lower surface of the support column 20 and is slidably arranged on the upper surface of the stainless steel plate 13 of the bottom plate 1. The sliding member 21 is preferably made of a high-strength brass casting material, and a solid lubricant is embedded in the sliding surface of the bottom plate 1 with the stainless steel plate 13 to have sufficient load resistance and sliding characteristics. And supports the load of the superstructure G. A part of the sealing material 22 is embedded and fixed in an annular recess formed around a recess 26 formed on the lower surface of the pillar body 20, and a part of the sealing material 22 surrounds the sliding material 21 and the lower surface of the pillar body 20. It is arranged so as to project further and prevent foreign matter such as dust from entering the sliding surface of the sliding member 21. The sealing material 22 may be omitted. The flange 23 on the upper surface of the column 20 has a rectangular flat plate shape, and bolt insertion holes 27 are formed at the four corners thereof, and the heads of the bolts 28 inserted into the bolt insertion holes 27 contact the upper structure G. Then, the nut 28a is tightened and fixed to the upper structure G.

The guide hole 24 penetrating the support column 20 is formed in a cylindrical shape corresponding to the sliding shaft body 2, and slidably receives the round bar portion of the sliding shaft body 2. As a result, the support column 20 and thus the movable support column 3 are allowed only to move relative to the sliding shaft 2 in the axial direction (X direction) of the sliding shaft 2.

FIG. 4 shows an arrangement example when the movable bearing S of this embodiment is applied to an inter-building connecting bridge. In the figure, B1 and B2 are building structures standing side by side independently of each other, and a connecting bridge G is bridged between these building structures through bearings S and P. S is a movable bearing of this embodiment, P is a fixed bearing, and the fixed bearing P is a conventionally known fixed bearing for a bridge.

(Operation / Effect of Embodiment) The movable bearing S of the present embodiment having the above-described structure acts as follows with respect to horizontal displacement and vertical displacement of the upper structure G.

When a horizontal relative displacement acts between the upper structure G and the lower structure B, the X-direction component of the displacement is caused by the movable support column 3 moving along the sliding shaft body 2. As for the Y-direction component of the displacement, the sliding shaft body 2 moves along the guide hole 15 of the projecting wall 11 to allow the displacement in all the horizontal directions. However, when an excessive horizontal force acts between the upper structure G and the lower structure B, the movable structure 3 abuts on the projecting wall 11 because the movable structure 3 moves in the X direction. The movement in the Y direction is restrained by the sliding shaft body 2 coming into contact with the arcuate end face of the guide hole 15 of the projecting wall 11 in the longitudinal direction. A viscoelastic member that absorbs an impact force may be arranged at the abutting portion in order to buffer the abutment of the movable column 3, the sliding shaft 2, and the guide hole 15 with each other.

When an upper lift is applied to the upper structure G, the engagement between the guide hole 24 of the column body 20 and the sliding shaft body 2 and the engagement between the sliding shaft body 2 and the guide hole 15 of the protruding wall 11 are performed. Depending on the combination, the floating of the movable support column 3 and thus the upper structure G is restrained. Therefore, even if an excessive horizontal force or lift force is applied between the upper structure G and the lower structure B, the upper structure G does not fall off the movable bearing S.

As described above, according to the movable bearing S of this embodiment, the movable column 3 is allowed to move in the X direction along the sliding shaft body 2, and the sliding shaft body 2 is guided by the guide hole of the projecting wall 11. Since movement in the Y direction is allowed along the direction 15, as a result, the movable bearing S can tolerate displacements in all horizontal directions, and also has a function of preventing the upper structure G from falling off, so various vibration displacements can be performed. It is suitable as a support to support the expected connecting bridges between buildings, large roofs such as event halls, or piping for oil plants.

Although the inclination of the upper structure G is not taken into consideration in the present embodiment, if the inclination of the upper structure G needs to be taken into consideration, the aspect of FIG. 5 or 6 may be adopted. . That is, the movable bearing S shown in FIG. 5 is such that the rubber pad 30 is interposed between the flange 23 of the movable column 3 and the upper structure G, and the movable column 3 has the flange 23, the rubber pad 30 and the upper structure G. It is attached to the upper structure G by means of bolts and nuts 28 which are inserted with a clearance in the attachment holes 27 formed through the holes. By adopting such a mode, when the upper structure G is inclined, the inclination is allowed by the compression deformation of the rubber pad 30 interposed between the flange 23 and the upper structure G, and When the upper lift acts on the upper structure G, the upper lift is restrained by the bolts and nuts 28.

In the movable bearing S shown in FIG. 6, the lower surface concave portion 26 of the column body 20 of the movable column 3 is formed deeper than that in the above-mentioned embodiment, the rubber pads 32 are densely arranged in the concave portion 26, and the rubber pad 32 is formed. The sliding member 33 is attached via the. This embodiment allows only the inclination of the upper structure G generated around the sliding shaft body 2, and is used when only the inclination in one direction needs to be considered. That is, when the upper structure G is tilted around the sliding shaft body 2, the tilting tilts the support column 20 about the sliding shaft body 2. In response to this tilting, the rubber pad 32 is compressed and deformed, so that the tilting is allowed while the sliding member 33 is always in contact with the stainless steel plate 13.

The present invention is not limited to the above embodiments, and various design changes can be made within the scope of the basic technical idea of the present invention. That is, the following aspects are included within the technical scope of the present invention. Sliding sliding is shown as sliding between the movable support column 3 and the sliding shaft body 2, the sliding shaft body 2 and the guide portion of the guide projecting wall 11, and the movable supporting column 3 and the bottom plate 1, but instead of a sliding material. Rolling material consisting of rollers and balls may be arranged for rolling sliding. The movable support S shows an example in which the movable support column 3 is attached to the upper structure G and the bottom plate 1 is attached to the lower structure B, but conversely, the bottom plate 1 is attached to the upper structure G and the movable support column 3 is attached to the lower structure. May be attached to B. The guide portion of the protruding wall 11 may be a guide groove instead of the guide hole. The movable bearing S has a mode in which the sliding member arranged on the lower surface of the movable column 3 and the smooth surface of the bottom plate 1 receive the load of the upper structure. However, the sliding member is arranged on the lower surface of the movable column 3. Instead, the load of the upper structure may be received by the guide hole 24 of the movable column 3 and the sliding shaft body 2. The sliding shaft body 2 and the guide holes 24 of the movable support column 3 are formed into polygonal shapes such as square rods and square holes, and the support column body 20 of the movable support column 3 is formed into another cross-sectional shape (for example, circular shape, polygonal shape, etc.). ) Is a design change item that can be easily achieved.

C. Effect of the Invention According to the movable bearing of the present invention, both ends of the sliding shaft body are inserted into the guide portions of the guide projection wall, and the sliding shaft body is movably arranged along the guide portions. Since its guide hole is inserted into the sliding shaft and is arranged so as to be movable in the axial direction with respect to the sliding shaft, the upper structure can move in all the horizontal directions with respect to the lower structure. It is allowed and has the function of preventing floating.

[Brief description of drawings]

FIG. 1 is an overall plan view of an embodiment of a movable bearing according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a view in the direction of arrow III in FIG.

FIG. 4 (a) is a side view showing an application example to a building connecting bridge.
(b) The figure is a plan view.

FIG. 5 is a view of another mode of the main movable bearing that allows tilt displacement.

FIG. 6 is a view showing still another mode of the movable bearing which allows tilt displacement.

[Explanation of symbols]

B ... lower structure, G ... upper structure, S ... movable bearing, 1 ...
Bottom plate, 2 ... Sliding shaft, 3 ... Movable column, 10 ... Base part, 1
1 ... Projection wall, 15 ... Guide hole, 24 ... Guide hole

Claims (3)

[Scope of utility model registration request] 1. A base body, which is interposed between an upper structure and a lower structure, allows a displacement of the upper structure in all directions in a horizontal direction, and is fixed to one structure. A bottom plate provided with two projecting walls that are provided so as to project from the base portion and extend parallel to each other at a predetermined distance, and guide portions that are provided opposite to each other along the longitudinal direction of the projecting walls; The sliding shaft is laid between the guide portions of the projecting walls of the bottom plate facing each other at right angles to the projecting wall, and is slidably movable along the guide portion, and is fixedly installed on the other structure, and the sliding is performed. A movable support comprising: a movable column having a guide hole through which the shaft penetrates and movably arranged in the axial direction with respect to the sliding shaft. 2. A bearing which is interposed between an upper structure and a lower structure and allows displacement of the upper structure in all horizontal directions, and is fixed to one structure and has a smooth surface. The base portion, two projecting walls provided so as to project from the base portion and extending in parallel with each other across the smooth surface, and the two projecting walls provided to face each other along the longitudinal direction of the projecting wall. A bottom plate having guide portions extending in parallel, and a sliding shaft body which is laid across the guide portions of the projecting walls facing each other of the bottom plate perpendicularly to the projecting walls and is movable along the guide portions. , Fixed to the other structure, the lower surface of which is slidably arranged on the smooth surface of the bottom plate, and has a guide hole through which the sliding shaft body penetrates, and its axial direction with respect to the sliding shaft body. A movable support characterized by consisting of a movable strut that is movably disposed on the. 3. A guide portion provided on the guide projection wall is a guide hole that penetrates in the thickness direction of the projection wall and extends along the longitudinal direction, and both ends of the sliding shaft body are inserted into the guide hole. The movable bearing according to claim 1, wherein the movable bearing is arranged in a fixed manner.