Support device

Abstract

The objective is to provide a bearing device that can suppress the occurrence of uneven wear of sliding members that slide against an inclined sliding surface. [Solution] The angle of the bearing 44 of the slider 30, which is positioned between the upper shoe 10 and the lower shoe 20 of the inclined sliding bearing device 1, is provided with an angle adjustment part that can be adjusted in accordance with the sliding with the inclined slide plate 13. A roller support part 46 that rotates on a rotation axis in the depth direction L is provided, and the roller support part 46 is positioned between the bearings 44 inside the virtual inverted V-shaped surface Vr2, and the inclined slide plate 13 can be rotatably supported by the relative movement between the upper shoe body 12 and the slider 30.

Description

Technical Field

[0001] The present invention relates to a support device, for example, a substructure such as a pier in a bridge or the like, which supports an upper structure such as a main girder.

Background Art

[0002] Conventionally, for example, in structures where vibrations and relative displacements occur, such as bridges, seismic isolation buildings, or connection parts connecting fixed structures, there are support devices that support movably. Such a support device is disposed between an upper structure such as a building and a lower structure such as a foundation structure, and by sliding on the boundary surface, that is, the sliding surface, between an upper shoe fixed to the bottom surface of the upper structure and a lower shoe fixed to the upper surface of the lower structure, it can support displacement in the in-plane direction at the boundary surface.

[0003] Among such support devices, as shown in Patent Document 1, there is a support device including a lower shoe having a V-shaped concave lower sliding surface on the upper surface and fixed to the upper part of the lower structure, an upper shoe having an inverted V-shaped concave upper sliding surface on the lower surface and fixed to the bottom of the upper structure, a lower sliding surface formed by a sliding member slidable in one direction with respect to the lower sliding surface, and a slider having an upper sliding surface formed by a sliding member slidable in a direction orthogonal to the one direction with respect to the upper sliding surface.

[0004] Thus, the support device of Patent Document 1 having a V-shaped concave lower sliding surface on the lower shoe, an inverted V-shaped concave upper sliding surface on the upper shoe, and a slider between the upper shoe and the lower shoe, allows the lower shoe and the slider to slide in one direction and the slider and the upper shoe to slide in the other direction. Therefore, when seismic motion is input, that is, during seismic excitation, the lower shoe, the slider, and the upper shoe slide and displace, and a seismic isolation mechanism can be constituted.

[0005] Furthermore, since the lower sliding surface of the lower shoe is V-shaped concave and the upper sliding surface of the upper shoe is inverted V-shaped concave, when the slider moves relative to the upper or lower shoe, it returns to its initial position due to the inclined sliding surface. Therefore, the bearing device described in Patent Document 1 is said to be able to suppress residual displacement by sliding on the sliding surface when an external force such as an earthquake is applied, and also restore the relative movement caused by the external force to return to the initial state.

[0006] However, in such bearing devices, the sliding members constituting the sliding surface of the slider sometimes experience uneven wear. This is thought to be caused by uneven loads acting on the sliding members during seismic excitation or in the initial stages of recovery. When uneven wear occurs on the sliding members in this way, the sliding performance deteriorates, making it impossible to maintain the desired sliding properties, and raising concerns about a decrease in the durability of the bearing device. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2013-130216 [Overview of the project] [Problems that the invention aims to solve]

[0008] Therefore, the present invention aims to provide a bearing device that can suppress the occurrence of uneven wear of a sliding member that slides against an inclined sliding surface. [Means for solving the problem]

[0009] This invention relates to a support device for supporting a superstructure so as to be slidable horizontally with respect to a substructure, comprising: a guide member fixed to the bottom of the superstructure or the upper surface of the substructure and extending in a predetermined horizontal direction; and a sliding body that slides relative to the guide member in the predetermined direction; the guide member is provided with a sliding material that forms an inclined sliding surface that slopes from the end side toward the center at a predetermined angle of inclination with respect to the horizontal direction, and is formed in a V-shape with the center being concave from the end side by the sliding surface of the sliding material; the sliding body is provided with a sliding member that is slidable with respect to the sliding material and a sliding body that holds the sliding member; and the sliding member is provided with respect to the inclined sliding surface. The sliding member is positioned on the sliding body at the same angle as the angle of inclination to form a sliding surface, and a virtual V-shape corresponding to the V-shape formed by the sliding material is formed by a virtual inclined surface along the sliding surface of the sliding member, and an angle adjustment part is provided that allows the positioning angle of the sliding member to be adjusted in accordance with the sliding of the sliding material, and a roller support part is provided on the sliding body that rotates in the predetermined direction by a rotation axis perpendicular to the predetermined direction, and the roller support part is positioned between the sliding members of the sliding body on the inside of the virtual V-shape or on the outside of the sliding members, and is configured to be able to rotatably support the sliding material by the relative movement of the guide member and the sliding body.

[0010] The bearing device comprising a guide member fixed to the bottom of the superstructure or the upper surface of the substructure and extending in a predetermined horizontal direction, and a sliding body that slides relative to the guide member in the predetermined direction, includes a bearing device in which both the upper shoe fixed to the bottom of the superstructure and the lower shoe fixed to the upper surface of the substructure are guide members, and a slider interposed between the lower shoe and the upper shoe is the sliding body, or a bearing device in which one of the upper and lower shoes is a guide member and the other shoe is the sliding body.

[0011] An angle adjustment unit that can adjust the installation angle of the sliding member as it slides with the sliding material may include configurations that adjust the installation angle by physically changing the orientation of the sliding member relative to the sliding body due to the action of an external force accompanying the sliding with the sliding material, or configurations that adjust the installation angle by deforming a member interposed between the sliding body and the sliding member due to the external force accompanying the sliding with the sliding material.

[0012] The above-mentioned description of the sliding surface of the sliding material forming a V-shape with the center being concave from the end side means that the cross section along the extension direction near the center in the width direction of the sliding surface is V-shaped, and this includes not only cases where the inclination angle from one end side to the center matches the inclination angle from the other end side to the center, but also cases where they are different. In addition, the above-mentioned V-shape remains V-shaped when the lower shoe is made of a guide member, but becomes an inverted V-shape when the upper shoe is made of a guide member.

[0013] The virtual V-shape corresponding to the V-shape formed by the sliding material is defined as a V-shape in the cross section along the extension direction near the center of the width direction of the virtual inclined surface when the virtual inclined surface along the sliding surface of the sliding material is extended and intersects three-dimensionally. The inclination angles of one virtual inclined surface and the inclination angles of the other virtual inclined surface may be the same or different, as long as they correspond to the V-shape formed by the sliding surface of the sliding material. Note that the virtual V-shape remains a virtual V-shape when the upper shoe is made of a guide member, but becomes an inverted V-shape when the lower shoe is made of a guide member.

[0014] The aforementioned virtual V-shaped inner side refers to the side of the sliding body portion from the virtual inclined surface when the virtual inclined surface along the sliding surface of the sliding member is extended and intersects in three dimensions, on the virtual inclined surface, or the side of the sliding body portion from the virtual inclined surface when the virtual inclined surface along the sliding surface of the sliding member whose installation angle has been adjusted by the angle adjustment portion is extended and intersects in three dimensions.

[0015] The space between the sliding members of the sliding body within the virtual V-shape described above, or the outside of the sliding members, refers to the space between the two sliding members that have different inclination directions, or the side opposite to the side on which one of the two sliding members with different inclination directions is positioned relative to the other sliding member, in a sliding body that holds two sliding members that have different inclination directions.

[0016] The statement that the sliding material can be rotatably supported by the relative movement between the guide member and the sliding body means that when relative movement occurs between the guide member and the sliding body during seismic excitation or restoration, the roller support portion rotatably supports the sliding material.

[0017] This invention makes it possible to suppress uneven wear of the sliding member that slides against the inclined sliding surface in a bearing device having an inclined sliding surface. More specifically, in a support device that supports a superstructure so as to be slidable horizontally relative to a substructure, a guide member fixed to the bottom of the superstructure or the upper surface of the substructure and extending in a predetermined horizontal direction is provided with a sliding material that forms an inclined sliding surface that slopes from the end side toward the center in the predetermined direction at a predetermined angle of inclination with respect to the horizontal, and the sliding surface of the sliding material forms a V-shape in which the center is concave from the end side.

[0018] Furthermore, in a sliding body that slides in the predetermined direction relative to a guide member, a sliding member held in the sliding body and slidable with the sliding material is positioned in the sliding body at the same installation angle as the inclination angle of the inclined sliding surface to form a sliding surface, and a virtual inclined surface along the sliding surface of the sliding member forms a virtual V-shape corresponding to the V-shape formed by the sliding material.

[0019] As a result, in response to external forces such as seismic motion, the guide member and the sliding body are guided by the sliding material of the guide member, and the sliding body having a sliding material that slides against the sliding material moves relative to the guide member in a predetermined direction. Furthermore, because the sliding surface of the sliding material of the guide member forms a V-shape with the center being concave from the end side, the sliding body, which forms a virtual V-shape corresponding to the V-shape formed by the sliding material due to the virtual inclined surface along the sliding surface of the sliding material, can move and restore to its initial position, that is, towards the center in the predetermined direction.

[0020] Furthermore, since an angle adjustment section is provided that allows the installation angle of the sliding member to be adjusted in accordance with the sliding motion with the sliding material, when the guide member and the sliding body move relative to each other in a predetermined direction due to the input of an external force such as seismic motion, or when the guide member and the sliding body that have moved relative to each other in a predetermined direction return to their initial positions, that is, when an uneven load is applied to the sliding member during seismic excitation or restoration, the installation angle of the sliding member is adjusted by the angle adjustment section according to the uneven load.

[0021] Furthermore, a roller support portion that rotates in the predetermined direction by a rotation axis perpendicular to the predetermined direction is positioned in the sliding body portion between the sliding members of the sliding body portion within the virtual V-shape or outside the sliding members, and the sliding material is configured to be rotatably supported by the relative movement between the guide member and the sliding body. As a result, the installation angle of the sliding member is adjusted by the angle adjustment portion according to the eccentric load, and the roller support portion rotatably supports the sliding material, that is, it can slide while being supported by the roller support portion during seismic excitation or recovery. Therefore, in a bearing device having an inclined sliding surface, it is possible to suppress uneven wear of the sliding member due to eccentric loads that occur during seismic excitation or recovery, and improve durability.

[0022] In addition, during seismic excitation or during restoration, when sliding while rotatably supporting the sliding material at the roller support portion, rolling friction dominates the sliding. Therefore, the setting of the friction coefficient and the inclination of the sliding material during seismic excitation or during restoration can be set separately from the setting of the friction coefficient and the inclination of the sliding material on the other side during seismic excitation and during restoration.

[0023] Furthermore, the rolling friction when sliding while rotatably supporting the sliding material at the roller support portion has a very small friction coefficient compared to the friction by the sliding member against the sliding material. Therefore, it can be restored with a small load. As a result, even at an inclination angle of the sliding material that cannot be restored by the sliding member, it can be restored, and the design freedom of the inclination angle of the sliding material and the friction coefficient of the sliding material can be improved.

[0024] As an aspect of this invention, a holding member for holding each of the sliding members is provided, and a concave arrangement recess for arranging the holding members is provided in the sliding main body portion. The opposing surfaces of the holding member and the arrangement recess may be formed of a curved surface including a curved region in a cross section along the predetermined direction. The curved surface including the above-mentioned curved region includes an arc surface that becomes an arc shape along a predetermined direction, and a spherical surface that curves in a direction orthogonal to the predetermined direction in addition to the predetermined direction.

[0025] According to this invention, the opposing surfaces of the holding member and the arrangement recess formed of a curved surface including a curved region in a cross section along the predetermined direction slide in the curved surface direction by the curved surface including the curved region, so that the installation angle of the sliding member with respect to the sliding main body portion can be easily adjusted. In addition, since the installation angle of the sliding member is adjusted by the sliding of the curved surfaces including the curved region, compared to the case where the installation angle of the sliding member is adjusted by the deformability of the material, it is less likely to cause aging deterioration, etc., and stable angle adjustment can be performed over a long period.

[0026] As another aspect of the present invention, a concave roller placement recess may be provided between the placement recesses in the sliding main body portion, in which the roller support portion is rotatably arranged. The depth of the roller placement recess may be formed deeper than the radius of the roller support portion, which is a rotating body, and shallower than the diameter.

[0027] According to the present invention, when it is desired to stably rotationally support the sliding material by a relative movement between the guide member and the slider in a desired state while securely arranging the roller support portion at a predetermined position in the sliding main body portion, rotational support can be achieved stably.

[0028] As another aspect of the present invention, an upper plate having the guide member and attached to the bottom of the upper structure, a lower plate having the guide member and attached to the upper surface of the lower structure, and a slider having the sliding body are provided. The guide member of the upper plate is an upper guide member that extends in one direction and has an inverted V shape with the center upwardly concave from the end side. The guide member of the lower plate is a lower guide member that extends in a direction orthogonal to the one direction and has a V shape with the center downwardly concave from the end side. The slider includes an upper slider that slides in the one direction with respect to the upper guide member and a lower slider that slides in the orthogonal direction with respect to the lower guide member and is integrally formed. The sliding member of the upper slider is slidable with respect to the inclined sliding surface of the upper guide member and forms a virtual inverted V shape by the virtual inclined surface. The sliding member of the lower slider is slidable with respect to the inclined sliding surface of the lower guide member and forms a virtual V shape by the virtual inclined surface.

[0029] The upper structure and the lower structure may be, for example, a bridge having a main girder as the upper structure and bridge piers as the lower structure, a building such as a building having the building as the lower structure and a connecting passage having a corridor connecting buildings as the upper structure, a roof structure having columns as the lower structure and a truss roof as the upper structure, or a structure in an expansion structure having a building as the lower structure and another building as the upper structure.

[0030] This invention enables relative movement and restoration in one direction during seismic excitation between the upper sliding body and the upper guide member constituting the slider, and relative movement and restoration in a perpendicular direction during seismic excitation between the lower sliding body and the lower guide member constituting the slider. Therefore, relative movement and restoration in all directions, that is, movement in any direction in the horizontal direction, i.e., seismic isolation function can be obtained stably over a long period of time. [Effects of the Invention]

[0031] The present invention provides a bearing device that can suppress the occurrence of uneven wear of a sliding member that slides against an inclined sliding surface. [Brief explanation of the drawing]

[0032] [Figure 1] A perspective view of an inclined sliding bearing device. [Figure 2] Exploded perspective view of an inclined sliding bearing device. [Figure 3] Diagram illustrating an inclined sliding bearing device. [Figure 4] Diagram illustrating the inclined sliding bearing device during operation. [Figure 5] Enlarged explanatory diagram of the main components of the inclined sliding bearing device during operation. [Figure 6] A diagram illustrating an inclined sliding bearing device of another embodiment. [Modes for carrying out the invention]

[0033] One embodiment of the inclined sliding bearing device 1 will be described below with reference to the drawings. Figure 1 shows a perspective view of the inclined sliding bearing device 1, Figure 2 shows an exploded perspective view of the inclined sliding bearing device 1, Figure 3 shows an explanatory diagram of the inclined sliding bearing device 1, Figure 4 shows an explanatory diagram of the inclined sliding bearing device 1 in operation, and Figure 5 shows an enlarged explanatory diagram of the main parts of the inclined sliding bearing device 1 in operation.

[0034] For details, the left half of Figure 3(a) shows a right side view of the inclined sliding bearing device 1, and the right half shows a cross-sectional view taken along arrow AA in Figure 1. The left half of Figure 3(b) shows a front view of the inclined sliding bearing device 1, and the right half shows a cross-sectional view taken along arrow BB in Figure 1.

[0035] Figure 4(a) shows a cross-sectional view taken along arrow AA in Figure 1 under normal conditions, and Figure 4(b) shows a cross-sectional view taken along arrow AA in Figure 1 during operation. Figures 5(a) and 5(b) show enlarged views of section a in Figure 4(a), and Figure 5(c) shows an enlarged view of section b in Figure 4(b). Note that Figure 5(a) shows an enlarged view of section a under normal conditions, Figure 5(b) shows an enlarged view of section a during earthquake excitation, and Figure 5(c) shows an enlarged view of section b during restoration.

[0036] In the following description of the inclined sliding bearing device 1, as shown in Figure 1, the direction connecting the lower left and upper right is defined as the depth direction L, the direction connecting the lower right and upper left is defined as the width direction W, and the vertical direction is defined as the height direction H. Furthermore, in Figure 1, the depth direction L connecting the lower left and upper right is defined as the front side Lf in the depth direction and the upper right as the back side Lb in the depth direction; the width direction W connecting the lower right and upper left is defined as the front side Wf ​​in the width direction and the upper left as the back side Wb in the width direction; and the height direction H is defined as the upper side Hu and the lower side Hd. In addition, the lower left side in Figure 1 is defined as the front side of the inclined sliding support device 1.

[0037] The inclined sliding bearing device 1 is a bearing device that supports an upper structure (not shown) so that it can slide horizontally relative to a lower structure, and is provided in the order from the top Hu to the bottom Hd, with an upper shoe 10 fixed to the bottom of the upper structure, a lower shoe 20 fixed to the upper surface of the lower structure, and a slider 30 positioned between the upper shoe 10 and the lower shoe 20.

[0038] Furthermore, the sliding surfaces formed by the interface between the upper shoe 10 and the slider 30, and the interface between the slider 30 and the lower shoe 20, slide against each other, allowing for displacement along the interface (sliding surface). This reduces the energy generated at the connection point due to earthquakes, strong winds, etc., compared to a rigid connection.

[0039] The upper shoe 10 and the lower shoe 20 are positioned upside down in the height direction H, and their longitudinal directions are perpendicular to each other in a plan view, but their configuration is identical. Therefore, in the following explanation, the configuration of the lower shoe 20 will be described in detail, and a detailed explanation of the configuration of the upper shoe 10 will be omitted.

[0040] The lower shoe 20 consists of a sole plate 21 fixed to the upper surface of the lower structure, a lower shoe body 22 mounted on the upper part of the sole plate 21, inclined slide plates 23 (231, 232) mounted on the upper surface of the lower shoe body 22 and forming a sliding surface, and side plates 24 provided on the side of the lower shoe body 22.

[0041] The sole plate 21 is a rectangular plate in plan view having a predetermined thickness that is longer in the depth direction L than in the width direction W, and it fixes the lower shoe 20 to the upper surface of the lower structure. The lower shoe body portion 22 is positioned on the upper surface of the sole plate 21 and is formed in a rectangular shape in plan view, with a shorter length in the width direction W than the sole plate 21, that is, narrower than the sole plate 21.

[0042] The upper surface of the lower shoe body 22 is formed as an inclined surface that slopes from the ends in the depth direction L, that is, from the ends of the front side Lf and the rear side Lb in the depth direction toward the center in the depth direction L. Although the angles of inclination from the front side Lf toward the center and the angles of inclination from the rear side Lb toward the center are different in direction, they are the same angle. Therefore, the upper surface of the lower shoe body 22 is formed in a V shape when viewed from the front side Wf ​​in the width direction, that is, in a side view.

[0043] The inclined slide plate 23 is mounted on the upper surface of the V-shaped lower shoe body 22 and functions as an inclined sliding surface 201 (202, 203) that slides with the bearing 54 of the slider 30, which will be described later, and is made of stainless steel plate material.

[0044] Furthermore, the front side Lf in the depth direction of the inclined slide plate 23 is designated as the front inclined slide plate 231, and the rear side Lb in the depth direction is designated as the rear inclined slide plate 232. The front inclined slide plate 231 functions as the front inclined sliding surface 202, and the rear inclined slide plate 232 functions as the rear inclined sliding surface 203. In addition, the inclined slide plate 23 is formed at an elevation angle of 1.5 degrees with respect to the horizontal direction, but it is not limited to 1.5 degrees and can be formed at an appropriate angle.

[0045] The side plates 24 are attached horizontally along approximately the entire length in the depth direction L to both sides of the lower shoe body 22, which is formed in a rectangular shape in plan view, in the width direction W. The side plates 24 are made of the same stainless steel plate material as the inclined slide plate 23.

[0046] As described above, the upper shoe 10 has the same configuration as the lower shoe 20, but is oriented upside down and positioned so that its longitudinal direction faces the width direction W. Therefore, the upper shoe 10 is positioned perpendicular to the lower shoe 20, whose longitudinal direction faces the depth direction L, in a plan view.

[0047] Thus, the upper shoe 10, which is positioned perpendicular to the lower shoe 20 in a plan view, consists of a sole plate 11, an upper shoe body 12, inclined slide plates 13 (131, 132) mounted on the upper surface of the upper shoe body 12 and constituting a sliding surface, and a first side plate 14 provided on the side surface of the upper shoe body 12. Each component of the upper shoe 10 is the same as each component of the lower shoe 20, but because it is positioned in the orientation described above, the sole plate 11 and the upper shoe body 12 are positioned so that the width direction W is longer than the depth direction L.

[0048] The lower surface of the upper shoe body 12 and the inclined slide plate 13 are formed as inclined surfaces that slope from the ends in the width direction W, that is, the ends of the front side Wf ​​and the rear side Wb in the width direction toward the center in the width direction W, and are formed in an inverted V shape when viewed from the depth direction L, that is, when viewed from the front, and the inclined slide plate 13 functions as an inclined sliding surface 101 (102, 103) that slides with the bearing 44 of the slider 30, which will be described later, and are made of stainless steel plate material.

[0049] Specifically, the front side Wf ​​in the width direction of the inclined slide plate 13 is designated as the front inclined slide plate 131, and the rear side Wb in the width direction is designated as the rear inclined slide plate 132. Furthermore, the front inclined slide plate 131 functions as the front inclined sliding surface 102, and the rear inclined slide plate 132 functions as the rear inclined sliding surface 103, forming an inverted V-shaped surface Vr1 (see Figure 5(a)) that is inverted V-shape when viewed from the front.

[0050] The slider 30 is configured to slide with respect to both the upper shoe 10 and the lower shoe 20. Specifically, the slider 30 can slide in the width direction W relative to the upper shoe 10, which is longer in the width direction W, and can slide in the depth direction L relative to the lower shoe 20, which is longer in the depth direction L.

[0051] As described above, the slider 30, which is slidable in the width direction W and the depth direction L, comprises an upper sliding body 40 that slides in the width direction W relative to the upper shoe 10 and a lower sliding body 50 that slides in the depth direction L relative to the lower shoe 20, with the upper sliding body 40 and the lower sliding body 50 being integrally formed.

[0052] The upper sliding body 40 and the lower sliding body 50 are positioned upside down in the height direction H, similar to the upper shoe 10 and the lower shoe 20, and are oriented perpendicular to each other in a plan view, but their configurations are identical. Therefore, in the following, the configuration of the upper sliding body 40, which is shown in Figure 2 as a perspective view from above Hu, will be described in detail, and a detailed explanation of the configuration of the lower sliding body 50 will be omitted.

[0053] The upper sliding body 40 comprises a main body portion 41 which is roughly square in plan view, a side block 42 positioned on the upper surface of the main body portion 41, a first side plate 43 positioned on the side of the side block 42 which is opposite the side plate 24 in the depth direction L when assembled, two bearings 44 which slide with each of the inclined slide plates 13, two holding portions 45 which hold each of the bearings 44, and a cylindrical roller support portion 46 which rotates about an axis extending in the depth direction L.

[0054] The main body portion 41 is a metal plate material having an appropriate thickness, and a U-shaped arrangement groove 411 is provided in the center of the width direction W, in the cross section in the direction of arrow BB as shown in Figure 5. The arrangement groove 411 is U-shaped so as to be able to accommodate the cylindrical roller support portion 46, that is, it is U-shaped with a diameter slightly larger than the diameter of the roller support portion 46. Furthermore, the arrangement groove 411 is formed to a depth deeper than the radius of the roller support portion 46 and shorter than its diameter. Such a U-shaped arrangement groove 411 is formed along the depth direction L between the first side plates 43 in the main body portion 41.

[0055] Furthermore, the upper surface of the main body 41 is provided with housing recesses 412 on both sides in the width direction W of the arrangement groove 411, which movably accommodate the holding portion 45. The receiving recess 412 has a rectangular shape in plan view, where the depth L is longer than the width W, and has an arc-shaped bottom surface 413 that is concave downward Hd relative to the width W, forming an inverted semi-circular space.

[0056] The side block 42 extends in the width direction W on both the front side Lf and the rear side Lb in the depth direction of the main body 41, and the first side plates 43 of the side block 42, which are located on both the front side Lf and the rear side Lb in the depth direction, are fixed in a direction that faces each other in the depth direction L.

[0057] The first side plate 43 is positioned on the inner surface of the side block 42 in the depth direction L, extending in the width direction W. The first side plate 43 is made of a self-lubricating polyamide resin or polytetrafluoroethylene resin.

[0058] The bearing 44 is a rectangular plate in plan view, with a length greater in the depth direction L than in the width direction W, and, like the first side plate 43, is made of a self-lubricating polyamide resin or polytetrafluoroethylene resin.

[0059] The retaining portion 45 that holds the bearing 44 is formed in an inverted semi-circular shape corresponding to the housing recess 412 of the main body portion 41, and is configured to hold the bearing 44 on its upper surface. More specifically, the retaining part 45, which corresponds to the receiving recess 412 that forms an inverted semi-circular space, is a rectangular block in plan view with a bearing 44 on its upper surface, and has an arc-shaped bottom surface 451 that has the same curvature as the arc-shaped bottom surface 413 of the receiving recess 412 and is convex toward the downward Hd.

[0060] Furthermore, the retaining portion 45 has a slightly smaller plan view shape compared to the housing recess 412 and is formed to approximately the same height as the housing recess 412. Therefore, when the retaining portion 45, which holds the bearing 44 on its upper surface, is housed in the housing recess 412 of the main body portion 41, the arc-shaped bottom surface 451 of the retaining portion 45 and the arc-shaped bottom surface 413 of the arrangement groove 411 face each other in the height direction H.

[0061] Furthermore, because the plan view shape of the retaining portion 45 is slightly smaller than that of the housing recess 412, when the retaining portion 45, which holds the bearing 44 on its upper surface, is housed in the housing recess 412, the bearing 44 is exposed from the upper surface of the main body portion 41. Also, because the arc-shaped bottom surface 451 of the retaining portion 45 and the arc-shaped bottom surface 413 of the housing recess 412 face each other in the height direction H, and because the plan view shape of the retaining portion 45 is slightly smaller than that of the housing recess 412, the retaining portion 45 can slide along the arc direction between the arc-shaped bottom surface 451 of the retaining portion 45 and the arc-shaped bottom surface 413 of the main body portion 41 in the housing recess 412. In this way, when the arc-shaped bottom surface 451 of the retaining portion 45 and the arc-shaped bottom surface 413 of the arrangement groove 411 slide along the arc direction, the orientation of the bearing 44 held on the upper surface of the retaining portion 45, that is, the elevation angle or depression angle with respect to the horizontal direction, can be changed.

[0062] Furthermore, the bearing 44, which is held on the upper surface of the retaining part 45 housed in the housing recess 412, is positioned along the angle corresponding to the inclined slide plate 13 in the upper shoe 10. Specifically, the bearing 44 provided on the upper surface of the retaining part 45 housed in the front retaining recess 412 Wf in the width direction of the arrangement groove 411 is positioned at an angle corresponding to the front inclined slide plate 131 which functions as the front inclined sliding surface 102, i.e., an elevation angle with respect to the horizontal direction. Similarly, the bearing 44 provided on the upper surface of the retaining part 45 housed in the rear retaining recess 412 Wb in the width direction is positioned at an angle corresponding to the rear inclined slide plate 132 which functions as the rear inclined sliding surface 103, i.e., an elevation angle with respect to the horizontal direction. At this time, the virtual inclined surfaces along the bearings 44 provided on both sides of the arrangement groove 411 form an inverted V-shaped surface Vr2 (see Figure 5(a)) in a front view.

[0063] The roller support portion 46 is cylindrical, housed in the arrangement groove 411 of the main body portion 41, and can rotate around a virtual axis of rotation in the depth direction L. The roller support portion 46 housed in the arrangement groove 411 protrudes upward towards Hu from the upper surface of the main body portion 41, but is positioned on the side of the main body portion 41 that is inside the inverted V-shaped surface Vr2.

[0064] The lower sliding body 50 has the same configuration as the upper sliding body 40 as described above, and is positioned upside down in the height direction H, and in a orientation perpendicular to it in a plan view. The lower sliding body 50 comprises a main body portion 51 which is roughly square in plan view, a side block 52 positioned on the lower surface of the main body portion 51, two bearings 54 positioned on the side of the side block 52 which, when assembled, slide against the side plate 24 in the width direction W, the first side plate 53, the inclined slide plate 23, two holding portions 55 which each hold the bearings 54, and a cylindrical roller support portion 56 which rotates around an axis extending in the width direction W.

[0065] A U-shaped arrangement groove 511 is provided in the center of the depth direction L of the main body 51, and on both sides of the width direction W of the arrangement groove 511 are provided a housing recess 512 for movably housing the holding part 55. The receiving recess 512 has an arc-shaped bottom surface 513 that is concave toward upward Hu with respect to the depth direction L, forming a semi-circular space.

[0066] The side blocks 52 are positioned so as to extend in the depth direction L on both the front side Wf ​​and the rear side Wb in the width direction of the main body 51, and the first side plates 53 of the side blocks 52, which are positioned on both the front side Wf ​​and the rear side Wb in the width direction, are fixed in a direction that faces each other in the width direction W.

[0067] The first side plate 53 is positioned on the inner surface of the side block 52 in the width direction W, extending in the depth direction L. The bearing 54 is a rectangular plate in plan view, with a length in the width direction W being longer than in the depth direction L, and is held on the lower surface of the holding part 55.

[0068] The retaining portion 55 that holds the bearing 54 is formed in a semi-circular shape corresponding to the housing recess 512 of the main body portion 51, and is configured to hold the bearing 54 on its lower surface. It has an arc-shaped bottom surface 551 that has the same curvature as the arc-shaped bottom surface 513 of the housing recess 512 and is convex toward upward Hu.

[0069] Furthermore, the bottom view shape of the holding portion 55 is slightly smaller than that of the housing recess 512, and when the holding portion 55, which holds the bearing 54 on its lower surface, is housed in the housing recess 512, the bearing 54 is exposed from the lower surface of the main body portion 51. In addition, the arc-shaped bottom surface 551 of the holding portion 55 and the arc-shaped bottom surface 513 of the main body portion 51 are opposite each other in the height direction H, and the bottom view shape of the holding portion 55 is slightly smaller than that of the housing recess 512, so when the arc-shaped bottom surface 551 of the holding portion 55 and the arc-shaped bottom surface 513 of the housing recess 512 slide along the arc direction, the orientation of the bearing 54 held on the lower surface of the holding portion 55, that is, the elevation angle or depression angle with respect to the horizontal direction, can be changed.

[0070] Furthermore, the bearing 54, which is held on the lower surface of the retaining portion 55 housed in the housing recess 512, is positioned along an angle corresponding to the inclined slide plate 23 in the lower shoe 20. At this time, a virtual V-shaped surface V2 is formed by the virtual inclined surfaces along the bearings 54 provided on both sides of the arrangement groove 511.

[0071] The roller support portion 56 is cylindrical in shape and rotates around a virtual axis of rotation in the width direction W. It is housed in the arrangement groove 511 of the main body portion 51 and protrudes downward Hd from the lower surface of the main body portion 51, but is positioned on the side of the main body portion 51 that is inside the virtual V-shaped surface V2.

[0072] The slider 30 is formed by integrating the upper sliding body 40 and the lower sliding body 50 configured in this way. The main body portion 41 of the upper sliding body 40 and the main body portion 51 of the lower sliding body 50 are composed of a single plate-shaped main body plate portion 31.

[0073] The inclined sliding bearing device 1 is constructed by assembling the upper shoe 10, lower shoe 20, and slider 30 described above for each component. Specifically, the upper shoe 10 is fixed to the bottom surface of the superstructure with the longitudinal direction of the upper shoe body 12 and the inclined slide plate 13 being the width direction W. Similarly, the lower shoe 20 is fixed to the top surface of the lower structure with the longitudinal direction of the lower shoe body 22 and the inclined slide plate 23 being the depth direction L. Then, the slider 30 is placed between the upper shoe 10 and the lower shoe 20.

[0074] More specifically, the upper sliding body 40 of the slider 30 is positioned so that the bearing 44 slides against the inclined slide plate 13 of the upper shoe 10. At this time, the upper sliding body 40 of the slider 30 is positioned so that the bearing 44 is oriented along a virtual inverted V-shaped surface Vr2 corresponding to the inverted V-shaped surface Vr1 of the inclined slide plate 13.

[0075] Furthermore, as shown in Figure 5(a), the roller support portion 46 is positioned between the front inclined slide plate 131 and the rear inclined slide plate 132, that is, in the center of the width direction W of the upper shoe body portion 12. However, since the roller support portion 46 is positioned inside the virtual inverted V-shaped surface Vr2, it does not come into contact with the front inclined slide plate 131 or the rear inclined slide plate 132, and a gap is provided.

[0076] Furthermore, side blocks 42 face each other on both sides of the upper shoe body 12 in the depth direction L of the upper shoe 10. Therefore, the first side plate 43 provided on the inner surface of the side block 42 faces the first side plate 14 of the upper shoe 10.

[0077] Furthermore, the lower sliding body 50 of the slider 30 is positioned so that the bearing 54 slides against the inclined slide plate 23 of the lower shoe 20. At this time, the lower sliding body 50 of the slider 30 is positioned so that the bearing 54 is oriented along a virtual V-shaped surface V2 corresponding to the V-shaped surface V1 of the inclined slide plate 23.

[0078] Furthermore, as shown in Figure 5(a), the roller support portion 56 is positioned between the front inclined slide plate 231 and the rear inclined slide plate 232, that is, in the center of the width direction W of the lower shoe body portion 22. However, since the roller support portion 56 is positioned inside the virtual V-shaped surface V2, it does not come into contact with the front inclined slide plate 231 or the rear inclined slide plate 232, and a gap is provided.

[0079] Furthermore, the side blocks 52 face both sides of the lower shoe body portion 22 of the lower sliding body 50 in the depth direction L. Therefore, the first side plate 53 provided on the inner surface of the side block 52 faces the side plate 24 of the lower shoe 20.

[0080] When an external force such as an earthquake acts on the inclined sliding bearing device 1 assembled in this manner, the upper structure and the lower structure (not shown) move relative to each other. At this time, for the relative horizontal movement, the slider 30 moves relative to the lower shoe 20 in the depth direction L, and for the relative movement in the width direction W, the slider 30 moves relative to the upper shoe 10 in the width direction W. When the slider 30 moves relative to the upper shoe 10 or lower shoe 20, the bearings 44 and 54 slide against the inclined sliding surfaces 101 and 201, which are inclined sliding surfaces, so the position of the slider 30 in the height direction H relative to the upper shoe 10 or lower shoe 20 separates. When the external force is released, the superimposed load acting on the upper shoe 10 causes the bearings 44 and 54 to move relative to the inclined sliding surfaces 101 and 201 so as to return to the center.

[0081] The following describes in detail the case where the slider 30 moves relative to the upper shoe 10 in the width direction W. Specifically, when an external force such as seismic motion acts from the initial state shown in Figures 4(a) and 5(a), the upper shoe 10 moves in the width direction towards the rear Wb relative to the slider 30. At this time, as in the seismic operation shown in Figure 5(b), the roller support part 46 is not in contact with the front inclined slide plate 131, so the front inclined slide plate 131 and the bearing 44 slide against each other.

[0082] Then, when the external force is released, the upper shoe 10 attempts to move towards the front side Wf ​​in the width direction relative to the slider 30 so that it returns to its initial position (Figure 5(c) during restoration). During this restoration, an uneven load is applied to the bearing 44, particularly towards the center. When an uneven load is applied to the bearing 44 towards the center, the arc-shaped bottom surfaces 451 and 413 of the retaining part 45 housed in the housing recess 412 slide in the arc direction, and the bearing 44 on the center side changes orientation so that it faces the main body part 41. When the orientation of the bearing 44 changes, the roller support part 46, which was previously inside the virtual inverted V-shaped surface Vr2, protrudes from the virtual inverted V-shaped surface Vr2 towards the inclined slide plate 13, and the roller support part 46 provides rotational support.

[0083] In the slider 30 of the inclined sliding bearing device 1 described above, the arc-shaped bottom surfaces 451, 551 of the holding parts 45, 55 that hold the bearings 44, 54 slide against the arc-shaped bottom surfaces 413, 513 of the housing recesses 412, 512 to change the orientation of the bearings 44, 54. However, as shown in Figure 6, it is also possible to arrange rubber plates 47, 57 having a predetermined thickness and predetermined deformability between the main body parts 41, 51 and the bearings 44, 54, and configure the device to hold the bearings 44, 54 with the rubber plates 47, 57. In this way, when an uneven load is applied to the bearing 44, the rubber plates 47, 57 deform according to their deformability, and the orientation of the bearing 44, 54 can be adjusted.

[0084] Furthermore, in the inclined sliding bearing device 1 described above, arrangement grooves 411, 511 are provided between the receiving recesses 412, 512 in the slider 30 (40, 50) to accommodate the roller support parts 46, 56. However, as shown in Figure 6, arrangement grooves 411, 511 may be provided on the outside of the receiving recesses 412, 512 in the main body parts 41, 51 to accommodate the roller support parts 46, 56.

[0085] As a result, when the upper shoe 10 and lower shoe 20 move relative to the slider 30 so as to return to their center, an uneven load is applied to the longitudinal end side of the bearings 44 and 54, causing the rubber plates 47 and 57 to deform and change orientation so that the central bearing 44 faces the main body 41. When the orientation of the bearing 44 changes, the roller support parts 46 and 56, which were previously inside the virtual inverted V-shaped surface Vr2 (virtual V-shaped surface V2), protrude from the virtual inverted V-shaped surface Vr2 (virtual V-shaped surface V2) toward the inclined slide plates 13 and 23, and the roller support parts 46 and 56 are rotated and supported by the inclined slide plates 13 and 23.

[0086] As described above, the inclined sliding bearing device 1, which supports the superstructure so that it can slide horizontally relative to the substructure, is fixed to the bottom of the superstructure or the top surface of the substructure and includes an upper shoe body portion 12(22) that extends in the horizontal width direction W or depth direction L, and a sliding body 40(50) that slides relative to the upper shoe body portion 12(22) in the width direction W or depth direction L.

[0087] The upper shoe body portion 12(22) is provided with an inclined slide plate 13(23) which constitutes an inclined sliding surface 101(201) that is inclined from the end side toward the center in the width direction W (depth direction L) at a predetermined inclination angle with respect to the horizontal direction. The inclined sliding surface 101(201) of the inclined slide plate 13(23) forms an inverted V-shaped surface Vr1 (V-shaped surface V1) which is concave from the end side toward the center. The sliding body 40(50) is provided with a bearing 44(54) which is slidable with the inclined slide plate 13(23) and a body portion 41(51) which holds the bearing 44(54). The bearing 44(54) is positioned on the main body 41(51) at the same installation angle as the inclination angle of the inclined sliding surface 101(201) to form an inclined sliding surface 401(501), and a virtual inclined surface along the inclined sliding surface 401(501) of the bearing 44(54) forms a virtual inverted V-shaped surface Vr2 (virtual V-shaped surface V2) corresponding to the inverted V-shaped surface Vr1 (V-shaped surface V1) formed by the inclined slide plate 13(23). The bearing 44(54) is provided with arc-shaped bottom surfaces 413(513) and 451(551) or rubber plates 47,57 that function as angle adjustment parts that allow the installation angle of the bearing 44(54) to be adjusted by sliding with the inclined slide plate 13(23). Additionally, a roller support part 46(56) that rotates in the width direction W (depth direction L) by a rotation axis perpendicular to the width direction W (depth direction L) is provided on the main body part 41(51). The roller support part 46(56) is positioned between the bearings 44(54) on the main body part 41(51) inside the virtual inverted V-shaped surface Vr2 (virtual V-shaped surface V2) or outside the bearings 44(54), and is configured to rotatably support the inclined slide plate 13(23) by the relative movement between the upper shoe main body part 12(22) and the sliding body 40(50).

[0088] Therefore, in an inclined sliding bearing device 1 having an inclined sliding surface 401 (501), it is possible to suppress the occurrence of uneven wear of the bearing 44 (54) that slides against the inclined sliding surface 401 (501).

[0089] More specifically, in an inclined sliding bearing device 1 that supports a superstructure so as to be slidable horizontally relative to a substructure, an inclined slide plate 13(23) is provided on the upper shoe body portion 12(22), which is fixed to the bottom of the superstructure (upper surface of the substructure) and extends in the horizontal width direction W (depth direction L). This inclined slide plate 13(23) forms an inclined sliding surface 101(201) that slopes from the end side toward the center in the width direction W (depth direction L) at a predetermined angle of inclination with respect to the horizontal. The inclined sliding surface 101(21) of the inclined slide plate 13(23) forms an inverted V-shaped surface Vr1 (V-shaped surface V1) where the center is concave from the end side.

[0090] Furthermore, in the sliding body 40(50) which slides in the width direction W (depth direction L) relative to the upper shoe body 12(22), a bearing 44(54) held by the body 41(51) and slidable with the inclined slide plate 13(23) is positioned on the body 41(51) at the same installation angle as the inclination angle of the inclined sliding surface 101(201) to form an inclined sliding surface 401(501). Additionally, a virtual inclined surface along the inclined sliding surface 401(501) of the bearing 44(54) forms a virtual inverted V-shaped surface Vr2 (virtual V-shaped surface V2) corresponding to the inverted V-shaped surface Vr1 (V-shaped surface V1) formed by the inclined slide plate 13(23).

[0091] As a result, when an external force such as an earthquake is input, the upper shoe body 12(22) and the sliding body 40(50) are guided by the inclined slide plate 13(23) of the upper shoe body 12(22), and the sliding body 40(50), which has a bearing 44(54) that slides with the inclined slide plate 13(23), moves relative to the upper shoe body 12(22) in the width direction W (depth direction L). Furthermore, because the inclined sliding surface 101(201) of the inclined sliding plate 13(23) of the upper shoe body 12(22) forms an inverted V-shaped surface Vr1 (V-shaped surface V1) that is concave from the end to the center, the sliding body 40(50) that forms a virtual inverted V-shaped surface Vr2 (virtual V-shaped surface V2) corresponding to the inverted V-shaped surface Vr1 (V-shaped surface V1) formed by the inclined sliding surface 401(501) of the bearing 44(54) can move and restore to its initial position, that is, towards the center in a predetermined direction.

[0092] Furthermore, since the bearing 44(54) is provided with arc-shaped bottom surfaces 413(513) and 451(551) or rubber plate material 47(57) that function as angle adjustment parts that can adjust the installation angle of the bearing 44(54) in accordance with its sliding motion with the inclined slide plate 13(23), when the upper shoe body 12(22) and the sliding body 40(50) move relative to each other in the width direction W (depth direction L) due to the input of an external force such as seismic motion, or when the upper shoe body 12(22) and the sliding body 40(50) that have moved relative to each other in the width direction W (depth direction L) return to their initial positions, that is, when an uneven load is applied to the bearing 44(54) during seismic excitation or restoration, the installation angle of the bearing 44(54) is adjusted according to the uneven load by the arc-shaped bottom surfaces 413(513) and 451(551) or rubber plate material 47(57) that function as angle adjustment parts.

[0093] Furthermore, a roller support portion 46(56) that rotates in the width direction W (depth direction L) by a rotation axis perpendicular to the width direction W (depth direction L) is positioned in the main body portion 41(51) between the bearings 44(54) of the main body portion 41(51) inside the virtual inverted V-shaped surface Vr2 (virtual V-shaped surface V2) or outside the bearings 44(54), and is configured to rotatably support the inclined slide plate 13(23) by the relative movement between the upper shoe main body portion 12(22) and the sliding body 40(50). Therefore, the installation angle of the bearing 44(54) is adjusted according to the eccentric load by the arc-shaped bottom surfaces 413(513) and 451(551) and the rubber plate material 47(57), which function as angle adjustment parts, and the roller support part 46(56) rotates and supports the inclined slide plate 13(23), that is, it can slide while being supported by the roller support part 46(56) during seismic excitation or restoration. Thus, in the inclined sliding bearing device 1 having an inclined sliding surface 401(501), uneven wear of the bearing 44(54) due to eccentric loads that occur during seismic excitation or restoration can be suppressed, and durability can be improved.

[0094] Furthermore, during restoration, when the inclined slide plate 13(23) is rotatably supported and slid by the roller support section 46(56), rolling friction becomes dominant. Therefore, the friction coefficient and the inclination of the inclined slide plate 13(23) during earthquake excitation or restoration can be set separately from the friction coefficient and the inclination of the inclined slide plate 13(23) during earthquake excitation.

[0095] Furthermore, the rolling friction when the roller support portion 46(56) slides while rotationally supporting the inclined slide plate 13(23) has a much smaller coefficient of friction compared to the friction caused by the bearing 44(54) on the inclined slide plate 13(23), allowing it to be restored with a small load. As a result, it can be restored even at inclination angles that the bearing 44(54) cannot restore, improving the design freedom for the inclination angle and coefficient of friction of the inclined slide plate 13(23).

[0096] Furthermore, each of the bearings 44(54) is provided with a holding portion 45(55), and the main body portion 41(51) is provided with concave receiving recesses 412(512) in which each of the holding portions 45(55) is positioned. The arc-shaped bottom surface 451(551) of the holding portion 45(55) and the arc-shaped bottom surface 413(513) of the receiving recesses 412(512) are formed as arc-shaped surfaces in a cross-section along the width direction W (depth direction L).

[0097] Therefore, the arc-shaped bottom surface 451 (551) of the holding portion 45 (55), which is formed by an arc-shaped surface in a cross-section along the width direction W (depth direction L), and the arc-shaped bottom surface 413 (513) of the housing recess 412 (512) slide in the arc direction along the arc-shaped surface, making it easy to adjust the installation angle of the bearing 44 (54) relative to the main body portion 41 (51). Furthermore, since the installation angle of the bearing 44 (54) is adjusted by sliding the arc-shaped surfaces together, it is less susceptible to deterioration over time compared to adjusting the installation angle of the bearing 44 (54) by the deformability of the material, and stable angle adjustment can be performed over a long period of time.

[0098] Furthermore, a concave arrangement groove 411(511) is provided between the receiving recesses 412(512) in the main body portion 41(51), in which the roller support portion 46(56) is rotatably positioned. The depth of the arrangement groove 411(511) is formed to be deeper than the radius of the rotating roller support portion 46(56) and shallower than its diameter.

[0099] Therefore, while ensuring that the roller support portion 46(56) is securely positioned at a predetermined location on the main body portion 41(51), the inclined slide plate 13(23) can be stably rotated and supported when desired, that is, when rotational support is desired by the relative movement between the upper shoe main body portion 12(22) and the sliding body 40(50).

[0100] Furthermore, the upper shoe 10, which is attached to the bottom of the superstructure and has an upper shoe body portion 12, the lower shoe 20, which is attached to the upper surface of the lower member and has a lower shoe body portion 22, and the slider 30, which has sliding bodies 40 and 50, are provided. The upper shoe body portion 12 of the upper shoe 10 extends in the width direction W and has an inverted V-shaped surface Vr1 with the center being concave upward from the end side, and the lower shoe body portion 22 of the lower shoe 20 extends in the depth direction L perpendicular to the width direction W and has a V-shaped surface V1 with the center being concave downward from the end side.

[0101] The slider 30 is integrally constructed and includes an upper sliding body 40 that slides in the width direction W relative to the upper shoe body 12 and a lower sliding body 50 that slides in the depth direction L relative to the lower shoe body 22. The bearing 44 in the upper sliding body 40 is slidable with the inclined sliding surface 101 of the upper shoe body 12 and forms a virtual inverted V-shaped surface Vr2 with a virtual inclined surface. The bearing 54 in the lower sliding body 50 is slidable with the inclined sliding surface 201 of the lower shoe body 22 and forms a virtual V-shaped surface V2 with a virtual inclined surface.

[0102] Therefore, relative movement and restoration during seismic excitation in the width direction W can be achieved between the upper sliding body 40 and the upper shoe body 12 that constitute the slider 30, and relative movement and restoration during seismic excitation in the depth direction L can be achieved between the lower sliding body 50 and the lower shoe body 22 that constitute the slider 30. Thus, relative movement and restoration in all directions, that is, movement in any direction in the horizontal direction, can be achieved, and seismic isolation function can be obtained stably over a long period of time.

[0103] In the correspondence between the configuration of the present invention and the embodiments described above, the support device of the present invention corresponds to the inclined sliding support device 1. The same applies to the following: The guide members correspond to the main body parts 12 and 22. The specified direction corresponds to the width direction W or the depth direction L. The sliding body corresponds to sliding bodies 40 and 50. The inclined sliding surfaces correspond to inclined sliding surfaces 101 and 201. The sliding material corresponds to the inclined slide plates 13 and 23. The V-shape corresponds to the inverted V-shaped surface Vr1 and the V-shaped surface V1. The sliding members correspond to bearings 44 and 54. The sliding body corresponds to the main body parts 41 and 51. The sliding surfaces correspond to the inclined sliding surfaces 401 and 501. The virtual V-shape corresponds to the virtual inverted V-shaped surface Vr2 and the virtual V-shaped surface V2. The angle adjustment section corresponds to the arc-shaped bottom surfaces 451, 551 of the holding sections 45, 55 and the arc-shaped bottom surfaces 413, 513 of the receiving recesses 412, 512. The roller support section corresponds to roller support sections 46 and 56. The retaining member corresponds to the retaining parts 45 and 55. The placement recesses correspond to the accommodating recesses 412 and 512. The opposing surfaces of the retaining member and the placement recess correspond to the arc-shaped bottom surfaces 451, 551 of the retaining parts 45, 55 and the arc-shaped bottom surfaces 413, 513 of the receiving recesses 412, 512, The roller placement recesses correspond to the placement grooves 411 and 511. The upper shoe corresponds to upper shoe 10. The lower shoe corresponds to lower shoe 20. The slider corresponds to the slider 30. One direction corresponds to the width direction W, The upper guide member corresponds to the upper shoe body 12, The orthogonal direction corresponds to the depth direction L. The lower guide member corresponds to the lower shoe body portion 22. The upper sliding body corresponds to the upper sliding body 40. The lower sliding body corresponds to the lower sliding body 50. The sliding member in the upper sliding body corresponds to the bearing 44 in the upper sliding body 40. The sliding member in the lower sliding body corresponds to the bearing 54 in the lower sliding body 50, but is not limited to the above embodiment.

[0104] For example, the inclined sliding bearing device 1 described above was described as an inclined sliding bearing device 1 equipped with an upper shoe 10 fixed to the bottom of the superstructure, a lower shoe 20 fixed to the upper surface of the substructure, and a slider 30 that slides between the upper shoe 10 and the lower shoe 20 in the width direction W or depth direction L. However, the inclined sliding bearing device may be configured with a lower shoe made of an upper sliding body 40 and an upper shoe 10, or with an upper shoe made of an upper sliding body 40 and a lower shoe 20.

[0105] Furthermore, the superstructure and substructure to which the inclined sliding bearing device 1 is attached may be, for example, a bridge in which the main girder is the superstructure and the piers are the substructure, a connecting passage in which a building or other structure is the substructure and a walkway connecting the buildings is the superstructure, a roof structure in which columns are the substructure and a truss roof is the superstructure, or a structure in an expansion structure in which a building is the substructure and another building is the superstructure.

[0106] Furthermore, although the arc-shaped bottom surface 413 of the receiving recess 412 and the arc-shaped bottom surface 451 of the holding portion 45 are formed as arc-shaped surfaces that are concave downward Hd with respect to the width direction W, they may also be formed as spherical surfaces that are concave downward Hd in both the width direction W and the depth direction L. [Explanation of Symbols]

[0107] 1… Inclined sliding bearing device 10...Upper foot 12… Upper shoe body 13, 23… Inclined sliding plate 20…Shimotsutsu 22…Lower shoe body part 30... Slider 40…Upper sliding body 41, 51…Main body 44, 54… bearings 45,55...Holding part 46, 56… Roller support section 50... Lower sliding body 101, 201, 401, 501… Inclined sliding surfaces 411,511…Arrangement groove 412,512… Storage recesses 413, 513, 451, 551… Arc-shaped base L... Depth direction V1…V-shaped surface V2…Virtual V-shaped surface Vr1…Inverted V-shaped surface Vr2...Virtual inverted V-shaped surface W...Width direction

Claims

1. A support device that allows a superstructure to slide horizontally relative to a substructure, A guide member fixed to the bottom of the superstructure or the upper surface of the substructure, extending in a predetermined horizontal direction, A sliding body that slides in the predetermined direction relative to the guide member is provided, The guide member is provided with a sliding material that forms an inclined sliding surface that slopes from the end side toward the center in the predetermined direction at a predetermined angle of inclination with respect to the horizontal direction, and is formed in a V shape with the center being concave from the end side by the sliding surface of the sliding material. The sliding body, A sliding member that can slide against the aforementioned sliding material and a sliding body portion that holds the sliding member are provided. The sliding member is, The sliding body is positioned at the same angle of inclination as the aforementioned inclined sliding surface to form the sliding surface, A virtual inclined surface along the sliding surface of the sliding member forms a virtual V-shape corresponding to the V-shape formed by the sliding material. An angle adjustment section is provided that allows the installation angle of the sliding member to be adjusted in accordance with the sliding motion with the sliding material, A roller support portion that rotates in the predetermined direction by a rotation axis perpendicular to the predetermined direction is provided on the sliding body portion, The roller support portion is, Displaced between the sliding members of the sliding body portion within the virtual V-shape, or on the outside of the sliding members, The sliding material is configured to be rotatably supported by the relative movement between the guide member and the sliding body. Bearing device.

2. A retaining member is provided to hold each of the aforementioned sliding members, The sliding body portion is provided with concave arrangement recesses for each of the holding members, The opposing surfaces of the retaining member and the arrangement recess are formed as curved surfaces including a curved region in a cross-section along the predetermined direction. The support device according to claim 1.

3. Between the arrangement recesses in the sliding body, a concave roller arrangement recess is provided in which the roller support portion is rotatably arranged. The depth of the roller arrangement recess is formed to be deeper than the radius of the roller support portion, which is a rotating body, and shallower than its diameter. The support device according to claim 1.

4. An upper shoe attached to the bottom of the superstructure and having the guide member, A lower shoe attached to the upper surface of the aforementioned lower structure and having the guide member, A slider having the aforementioned sliding body is provided, The guide member of the upper shoe is an upper guide member that extends in one direction and has an inverted V shape with the center being concave upward from the end side, The guide member of the lower shoe is a lower guide member that extends in a direction perpendicular to the one direction and has a V-shape with the center being concave downwards from the end side. The aforementioned slider is, An upper sliding body that slides in one direction relative to the upper guide member, A lower sliding body that slides perpendicular to the lower guide member is provided and integrally formed with the lower guide member, The sliding member in the upper sliding body is slidable with the inclined sliding surface of the upper guide member, and the virtual inclined surface forms a virtual inverted V shape. The sliding member in the lower sliding body is slidable with the inclined sliding surface of the lower guide member, and the virtual inclined surface forms a virtual V-shape. A support device according to any one of claims 1 to 3.

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