JP2562945Y2 - Movable bearing - Google Patents

Description

[Detailed description of the invention]

A. Purpose of the invention (1) Industrial application field This invention relates to bearings for supporting structures such as bridges between buildings, large roofs such as event halls, and piping for oil plants. The present invention relates to a movable bearing that allows displacement in all directions in the horizontal direction and restrains the lift of a structure.

2. Description of the Related Art Conventionally, a movable bearing used for a bridge generally has a function of allowing expansion and contraction of an upper structure such as a bridge girder in a bridge axis direction, and an upper lift acting on the upper structure. It is equipped with a function to receive the information. For the upper lift acting on the upper structure, the lower shoe, which is generally fixed to a lower structure such as a pier, is fixed to the upper structure at protrusions provided at both ends in a direction perpendicular to the bridge axis of the lower shoe. A structure is adopted in which a side block that protrudes from the upper surface of the upper shoe and receives it is received.

However, for example, in an inter-building bridge, the buildings facing each other vibrate individually based on their natural vibration characteristics, so that the bridge girder of the bridge is not only in the bridge axis direction but also in the direction perpendicular to the bridge axis. In addition, a large displacement is caused, and furthermore, a longitudinal vibration is applied.

(3) Problems to be solved by the present invention The present invention has been made in view of the above circumstances, and allows displacement in any displacement in the horizontal direction and effectively activates a floating prevention function. The purpose is to obtain a bearing that can be demonstrated.

B. Configuration of the Invention (1) Means for Solving the Problems The movable bearing of the invention employs the following technical means (configuration) to achieve the above object. That is, the first main configuration 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 directions in the horizontal direction. A base portion fixed to the base portion, two protruding walls provided to protrude from the base portion and extending in parallel with each other at a predetermined distance, and guides provided to face each other along the longitudinal direction of the protruding wall. A bottom plate having a portion; a sliding shaft that is bridged between guide portions of opposed protrusion walls of the bottom plate orthogonally to the protrusion wall and is movable along the guide portion; and the other structure And a movable column fixed to the sliding shaft and having a guide hole through which the sliding shaft penetrates, the movable pillar being movably arranged in the axial direction with respect to the sliding shaft.

A second main structure of the present invention is a bearing which is interposed between an upper structure and a lower structure and allows displacement of the upper structure in all directions in the horizontal direction. A base portion fixed to the object and having a smooth surface; two protruding walls provided to protrude from the base portion and extending in parallel with each other across the smooth surface; and opposing each other along the longitudinal direction of the protruding wall. A bottom plate having a guide portion extending in parallel with the smooth surface; a bottom plate extending between the guide portions of opposed protrusion walls of the bottom plate orthogonally to the projection wall, and extending along the guide portion. A sliding shaft fixed to the other structure, the lower surface of which is slidably disposed on a smooth surface of the bottom plate, and having a guide hole through which the sliding shaft passes. A movable column movably disposed in the axial direction with respect to the moving shaft.

(2) Operation When a horizontal relative displacement occurs between the upper structure and the lower structure, one axial component of the displacement is determined by moving the movable support along the sliding shaft. The horizontal component of the displacement in the perpendicular direction is allowed in any direction by the sliding shaft moving along the guide portion of the guide projection wall. The axial movement of the upper structure is allowed over the length between the guide projection walls of the sliding shaft. Also, movement in the right angle direction is allowed over the length of the guide portion of the guide projection wall. When an excessive lifting force is generated in the upper structure, the floating is prevented by the engagement between the guide hole of the movable column and the sliding shaft and the engagement between the sliding shaft and the guide portion of the bottom plate. You.

(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 one embodiment of the present invention, and show a movable bearing 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 its cross-sectional configuration and side configuration.

[0009] As shown in these figures, B is a lower structure such as a building, and G is an upper structure such as a connecting bridge that is bridged between the buildings. The 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 directions in the horizontal direction.

Thus, the movable support S is a lower structure B
A bottom plate 1 mounted and fixed on the top, a sliding shaft 2 moving along the bottom 1, and a bottom plate 1 fixed to the upper structure G and placed on the bottom plate 1 and along the sliding shaft 2 And a movable column 3 that moves.

Hereinafter, a detailed configuration of each unit will be described. Bottom board 1 Bottom board 1 has a base plate 10 having a rectangular flat plate shape (square in this embodiment), and a rectangular projecting wall projecting from both sides in the X direction of FIG. 11
Consists of The base 10 and the protruding wall 11 maintain a predetermined thickness and have sufficient bearing pressure and impact resistance. Base part 10
Is made smooth, but in this embodiment, a steel plate, in particular, a stainless steel plate 13 is adhered. Each of the protruding walls 11 has a guide hole 15 which is an embodiment of a guide portion penetrating in the X direction, has a certain width in the height direction of the protruding wall, and has a predetermined length in the longitudinal direction (Y direction). It has been established. Both end surfaces in the longitudinal direction of the guide hole 15 are formed in an arc surface.

The sliding shaft 2 has a base made of 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. , Both ends of which are slightly
A flange 17 having a diameter larger than the width of the guide hole 15 is fixed to the protruding end. Sliding shaft 2 and guide hole 15
A cylindrical bearing 18 having a sliding surface on the outer peripheral surface is fixed to the sliding shaft 2 at its inner periphery, and its outer periphery is
5 in sliding contact. The sliding shaft 2 has sufficient strength. The sliding shaft 2 is inserted into the guide hole 15 of the bottom plate 1 via the bearing 18, and the flange 1
7 is fixed outside the projecting wall 11 with some margin. Thereby, only the movement of the sliding shaft body 2 in the Y direction is allowed.

Movable column 3 The movable column 3 comprises a rectangular column 20 and a column 20.
A sliding member 21 and a sealing member 22 disposed on a lower surface of the support member 20; a flange 23 integrally formed on an upper surface of the support body 20;
Consists of A guide hole 24 is bored through the support body 20.

More specifically, the sliding member 21 disposed on the lower surface of the column 20 has a disk shape, and a part thereof is embedded in a disk-shaped concave portion 26 formed on the lower surface of the column 20. It is fixed and partially slidably disposed on the upper surface of the stainless steel plate 13 of the bottom plate 1 so as to protrude partially from the lower surface of the support body 20. The sliding material 21 is preferably made of a high-strength brass casting material, and a solid lubricant is embedded in a sliding surface of the bottom plate 1 with the stainless steel plate 13 and has sufficient load resistance and sliding characteristics. Thus, the load of the upper structure G is supported. The seal member 22 is partially embedded and fixed in an annular concave portion formed around a concave portion 26 formed on the lower surface of the support body 20, and partially surrounds the sliding member 21 and is fixed to the lower surface of the support body 20. It is arranged so as to protrude further to prevent foreign matter such as dust from entering the sliding surface of the sliding member 21. Note that the seal member 22 can be omitted. The flange 23 on the upper surface of the support body 20 has a rectangular flat plate shape, and bolt insertion holes 27 are opened at four corners thereof. The head of the bolt 28 inserted into the bolt insertion hole 27 abuts on the upper structure G. Then, the nut 28a is fixed to the upper structure G by tightening the nut 28a.

A guide hole 24 penetrating through the column 20 is formed in a cylindrical shape corresponding to the sliding shaft 2 and slidably receives the round bar portion of the sliding shaft 2. Thus, the column 20 and thus the movable column 3 are allowed to move only in the axial direction (X direction) of the sliding shaft 2 with respect to the sliding shaft 2.

FIG. 4 shows an arrangement example in which the movable bearing S of this embodiment is applied to a bridge between buildings. In the figure, B1,
B2 is a building structure which is juxtaposed independently of each other, and a connecting bridge G is bridged between these building structures via bearings S and P. S is a movable bearing of this embodiment, P is a fixed bearing, and a fixed bearing P is a conventionally known fixed bearing for a bridge.

(Operation and Effect of the Embodiment) The movable bearing S of the embodiment having the above-described structure acts as follows on the horizontal displacement and the 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 determined by moving the movable column 3 along the sliding shaft 2. The Y-direction component of the displacement is allowed to be displaced in all directions in the horizontal direction by the sliding shaft 2 moving along the guide hole 15 of the protruding wall 11. However, the superstructure G
When an excessive horizontal force acts between the upper structure G and the lower structure B, the movement of the upper structure G in the X direction is restrained by the movable support 3 abutting on the protruding wall 11, and the movement in the Y direction. Is restricted by the sliding shaft body 2 abutting on the longitudinal arc-shaped end face of the guide hole 15 of the protruding wall 11. Note that a viscoelastic member or the like that absorbs an impact force may be disposed in the contact portion in order to buffer the contact between the movable column 3, the sliding shaft 2, and the guide hole 15.

When an upward lift acts on the upper structure G, the engagement between the guide hole 24 of the column 20 and the sliding shaft 2 and the engagement between the sliding shaft 2 and the guide hole 15 of the protruding wall 11 are performed. In some cases, the lifting of the movable support 3 and thus the upper structure G is restrained. Therefore, even if an excessive horizontal force or an upward lift acts between the upper structure G and the lower structure B, the upper structure G does not drop from the movable support 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 2, and the sliding shaft 2 is guided by the guide hole of the projection wall 11. Y along 15
As a result, the movable bearing S can tolerate displacement in all directions in the horizontal direction, and the upper structure G
It is suitable as a bearing for supporting pipes of a large roof such as an inter-building bridge, an event hall, or an oil plant where various vibration displacements are expected.

In this embodiment, the upper structure G
However, when it is necessary to consider the inclination of the upper structure G, the embodiment shown in FIG. 5 or FIG. 6 may be adopted. That is, the movable bearing S shown in FIG. 5 is a rubber pad 3 between the flange 23 of the movable column 3 and the upper structure G.
The movable column 3 is provided with an upper structure G by a bolt and a nut 28 which is inserted with a margin into a mounting hole 27 formed through the flange 23, the rubber pad 30, and the upper structure G. Attached to By adopting such an aspect, 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,
When an upward lift acts on the upper structure G, the upward lift is restrained by the bolts and nuts 28.

In the movable bearing S shown in FIG. 6, the lower concave portion 26 of the column 20 of the movable column 3 is formed deeper than in the above-described embodiment, and rubber pads 32 are densely arranged in the concave portion 26 so that the rubber pad 32 is interposed therebetween. The sliding member 33 is attached.
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 2, the tilt is changed to the column 20.
Is tilted about the sliding shaft 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 embodiment, and various design changes can be made within the basic technical concept of the present invention. That is, the following embodiments are included in the technical scope of the present invention. Movable column 3 and sliding shaft 2, sliding shaft 2 and guide projection wall 11
Although the sliding between the guide portion and the movable column 3 and the bottom plate 1 is a sliding slide, a rolling member made of a roller or a ball may be provided instead of the sliding member, and the sliding may be performed. The movable support S includes a movable support 3 on the upper structure G,
Was attached to the lower structure B, but on the contrary,
May be attached to the upper structure G, and the movable support 3 may be attached to the lower structure B. The guide portion of the protruding wall 11 may be a guide groove instead of the guide hole. The movable bearing S is configured to receive the load of the upper structure on the sliding material disposed on the lower surface of the movable support 3 and the smooth surface of the bottom 1, but without disposing the slip material on the lower surface of the movable support 3. The load of the upper structure may be received by the guide hole 24 of the movable column 3 and the sliding shaft 2. The guide hole 24 of the sliding shaft 2 and the movable column 3 is formed in a polygonal shape such as a square rod or a square hole, and the column 20 of the movable column 3 is formed in another cross-sectional shape (for example, a circular shape, a polygonal shape, or the like).
Is a design change matter that can be easily achieved.

According to the movable bearing of the present invention, both ends of the sliding shaft are inserted into the guide portion of the guide projection wall, and the movable shaft is movably arranged along the guide portion. Since the guide hole is inserted into the sliding shaft and is arranged so as to be movable along the axial direction with respect to the sliding shaft, the upper structure is allowed to move in all horizontal directions with respect to the lower structure. It also has a function to prevent lifting.

[Brief description of the drawings]

FIG. 1 is an overall plan view of an embodiment of the movable bearing of 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. 1;

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

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

FIG. 6 is a view showing still another embodiment of the present movable bearing that allows a 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, 1
1: Projected wall, 15: Guide hole, 24: Guide hole

Claims (3)

(57) [Scope of request for utility model registration] 1. A support which is interposed between an upper structure and a lower structure and which allows displacement of the upper structure in all directions in the horizontal direction, the base being fixed to one of the structures. A bottom plate having two protruding walls protruding from the base portion and extending in parallel with each other at a predetermined distance, and a guide portion provided to face each other along a longitudinal direction of the protruding wall; A sliding shaft that extends between the guide portions of the opposed protruding walls of the bottom plate orthogonal to the protruding wall and is movable along the guide portions; A movable support having a guide hole through which the shaft penetrates and being 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 which allows displacement of the upper structure in all directions in the horizontal direction, the bearing being fixed to one of the structures and having a smooth surface. A base portion, two protruding walls provided so as to protrude from the base portion and extending in parallel with each other across the smooth surface, and provided to face each other along a longitudinal direction of the protruding wall; A bottom plate having a guide portion extending in parallel, a sliding shaft that is bridged between guide portions of opposed protrusion walls of the bottom plate orthogonally to the protrusion wall and is movable along the guide portion. The lower surface is fixed to the other structure, the lower surface thereof is slidably disposed on the smooth surface of the bottom plate, and has a guide hole through which the sliding shaft body penetrates. And a movable support movably disposed on the movable support. 3. The guide portion provided on the guide projection wall is a guide hole penetrating in the thickness direction of the projection wall and extending along the longitudinal direction, and both ends of the sliding shaft body are inserted into the guide holes. The movable bearing according to claim 1, wherein the movable bearing is disposed.