Basic structure

Abstract

To provide a foundation structure for supporting a supported body with a supporting body as a foundation.SOLUTION: A conventional foundation structure is made to possess a guide member having a guide face at which a lower guide structure or an upper guide structure extends along an X-axis, and a moving body having a contact face contactable with the guide face, and relatively and movably guides the lower structure or the upper structure and a middle structure in an axial direction. A supporting body and a supported body are relatively moved while making a contact face of the moving body contact with the guide face of the guide member within a prescribed stroke range when the supporting body and the supported body relatively move in a horizontal direction. A first right rail and a second right rail, or a first left rail and a second left rail are arranged so as to adjoin each other when viewed from above with directions in which the guide faces extend set parallel with each other, and a reference position of the first right rail and a reference position of the second right rail, or a reference position of the first left rail and a reference position of the second let rail which are arranged so as to adjoin each other are deviated from each other by a separation distance in the axial direction.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a foundation structure for supporting a supported object on a support body, and more particularly to a foundation structure having a characteristic operating mechanism when horizontal acceleration acts on the supported object. [Background technology]

[0002] When an earthquake occurs, homes, structures, vending machines, furniture, shelves, and manufacturing equipment shake horizontally and vertically. Furthermore, structures, vending machines, furniture, shelves, and manufacturing equipment installed within the moving body are shaken horizontally and vertically while the moving body is moving. In addition, manufacturing equipment, which is sensitive to even the slightest everyday tremors, is shaken by slight accelerations from the ground. These houses, structures, vending machines, furniture, shelves, and manufacturing equipment are referred to as supported objects. If the horizontal acceleration due to an earthquake or the like is large, if the horizontal shaking lasts for a long time, or if the allowable acceleration is small, the supported structure may be damaged or the object it supports may fall over or be damaged. Furthermore, manufacturing equipment may not perform as expected.

[0003] In order to prevent these situations, a seismic isolation device has been disclosed which includes a rolling element that is supported so as to be rotatable around a predetermined axis on one side of either the supported object or the support, and a guide member attached to the other side of the supported object or the support, which contacts the rolling element and extends in the rolling direction, and in which, when the supported object moves horizontally relative to the support, the distance between the rolling axis of the rolling element and the horizontal plane fixed to the guide member gradually increases as the rolling element rolls by at least a predetermined distance from the smallest reference distance. With the above-mentioned configuration, it is possible to obtain a seismic isolation device that can provide good seismic isolation effects even against long-period seismic motion of 1 Hz or less, can be easily manufactured with a simple structure, and can provide seismic isolation regardless of the weight of the supported body, as well as a seismic isolation structure that uses this advanced device.

[0004] The inventors have investigated a foundation structure that can be applied to a seismic isolation device and can be made smaller. Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been devised in view of the above-mentioned problems, and aims to provide a foundation structure for supporting a supported object on the basis of a supporting body. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides a foundation structure for supporting a supported object based on a supporting body, the foundation structure comprising an upper structure for supporting the supporting body, a lower structure supported by the supported object, an intermediate structure located between the upper structure and the lower structure, a lower guide structure which is a guide structure for restraining horizontal movement of the lower structure and the intermediate structure intersecting the X-axis within a range of a predetermined stroke of the X-axis and guiding the lower structure and the intermediate structure so as to be relatively movable in the X-axis direction, and a guide structure for restraining horizontal movement of the lower structure and the intermediate structure intersecting the X-axis within a range of a predetermined stroke of the X-axis and guiding the upper structure and the intermediate structure so as to be relatively movable in the X-axis direction. and an upper guide structure which is a guide structure that restricts horizontal movement intersecting the Y axis within the range of a Y-axis stroke and guides the Y axis direction so as to allow relative movement in the Y axis direction, wherein the lower guide structure has a lower guide member which is a guide member fixed to one of the lower structure and the intermediate structure and has a guide surface extending along the X axis, and a lower moving body which is a moving body fixed to the other of the lower structure and the intermediate structure and has a contact surface that can come into contact with the guide surface, or the upper guide structure has an upper guide member which is a guide member fixed to one of the upper structure and the intermediate structure and has a guide surface extending along the Y axis, and a front moving body which is a moving body fixed to the other of the lower structure and the intermediate structure and has a contact surface that can come into contact with the guide surface. The present invention has an upper movable body which is a movable body fixed to the other of the upper structure and the intermediate structure and has a contact surface capable of contacting the guide surface, and when the supporting body and the supported body move relatively horizontally, the movable body moves relatively while being guided by the guide member while the contact surface comes into contact with the guide surface within a predetermined stroke range, and when the position of the movable body on the guide member when the vertical distance between the movable body and a virtual horizontal plane fixed to the guide member is the smallest within the predetermined stroke range is called a reference position, when viewed from above, the movable body moves from the reference position within the predetermined stroke range. The vertical distance gradually increases as the distance from the guide member increases in the axial direction, the guide member has a pair of left and right first rails, a first right rail and a first left rail, and a pair of left and right second rails, a second right rail and a second left rail, each of which forms the guide surface, and when viewed from above, at least one of the first right rail and the second right rail or the first left rail and the second left rail are arranged adjacent to each other with the directions in which their guide surfaces extend parallel to each other, and a reference position of the first rail and a reference position of the second rail arranged adjacent to each other are shifted in the axial direction by the separation distance.

[0007] In the above-described configuration of the present invention, a pair of virtual axes intersecting each other in a horizontal plane are called the X-axis and the Y-axis. The upper structure supports the support. The lower structure is supported by the supported object. The intermediate structure is located between the upper structure and the lower structure. The lower guide structure is a guide structure that restrains horizontal movement of the lower structure and the intermediate structure intersecting the X-axis within a range of a predetermined stroke, that is, an X-axis stroke, and guides them so that they can move relatively in the X-axis direction. The upper guide structure is a guide structure that restrains horizontal movement of the upper structure and the intermediate structure intersecting the Y-axis within a range of a predetermined stroke, that is, a Y-axis stroke, and guides them so that they can move relatively in the Y-axis direction. The lower guide structure includes a lower guide member that is a guide member fixed to one of the lower structure and the intermediate structure and has a guide surface extending along the X-axis, and a lower moving body that is a moving body fixed to the other of the lower structure and the intermediate structure and has a contact surface that can contact the guide surface, or the upper guide structure includes an upper guide member that is a guide member fixed to one of the upper structure and the intermediate structure and has a guide surface extending along the Y-axis, and an upper moving body that is a moving body fixed to the other of the upper structure and the intermediate structure and has a contact surface that can contact the guide surface. When the support and the supported body move relatively horizontally, the moving body moves relatively while being guided by the guide member while the contact surface comes into contact with the guide surface within a predetermined stroke range. When the position of the moving body on the guide member when the vertical distance between the moving body and a virtual horizontal plane fixed to the guide member is the smallest within the predetermined stroke range is called a reference position, the vertical distance gradually increases as the moving body moves away from the reference position along the axial direction within the predetermined stroke range when viewed from above. The guide member has a pair of left and right first rails, a first right rail and a first left rail, which form the guide surfaces respectively, and a pair of left and right second rails, a second right rail and a second left rail. When viewed from above, at least one of the first right rail and the second right rail or the first left rail and the second left rail is arranged adjacent to each other with the directions in which the guide surfaces extend parallel to each other, and a reference position of the first rail and a reference position of the second rail arranged adjacent to each other are shifted in the axial direction by a separation distance. As a result, a foundation structure that is compact when viewed from above can be provided.

[0008] The present invention includes any one of the embodiments described below, or a combination of two or more of the embodiments described below.

[0009] In the foundation structure according to an embodiment of the present invention, the axial separation distance between the reference position of the first rail and the reference position of the second rail, which are arranged adjacent to each other, is shorter than the specified stroke. With the configuration of the above embodiment, the distance in the axial direction between the reference position of the first rail and the reference position of the second rail, which are arranged adjacent to each other, is shorter than the predetermined stroke. As a result, it is possible to provide a foundation structure that is compact when viewed from above but has a long operating distance.

[0010] In a basic structure according to an embodiment of the present invention, when viewed from above, the first right rail and the second right rail are arranged adjacent to each other with their guide surfaces extending in parallel, and the reference position of the first right rail arranged adjacent to each other is shifted in the axial direction by a separation distance from the reference position of the second right rail, and when viewed from above, the first left rail and the second left rail are arranged adjacent to each other with their guide surfaces extending in parallel, and the reference position of the first left rail arranged adjacent to each other is shifted in the axial direction by a separation distance from the reference position of the second left rail. With the configuration of the above embodiment, the first right rail and the second right rail are arranged adjacent to each other with their guide surfaces extending in parallel when viewed from above, and the reference position of the adjacent first right rail is shifted in the axial direction from the reference position of the second right rail by the separation distance.The first left rail and the second left rail are arranged adjacent to each other with their guide surfaces extending in parallel when viewed from above, and the reference position of the adjacent first left rail is shifted in the axial direction from the reference position of the second left rail by the separation distance. As a result, it is possible to provide a foundation structure that is compact when viewed from above, yet has a long operating distance and is easy to balance.

[0011] In a foundation structure according to an embodiment of the present invention, when viewed from above, the first right rail and the second right rail are arranged so that the directions in which their guide surfaces extend are parallel, and the first right rail is adjacent to one of the left or right sides of the second right rail, and the reference position of the first right rail arranged adjacent to the reference position of the second right rail is shifted by the separation distance in one axial direction from the reference position of the second right rail, and the first left rail and the second left rail are arranged so that the directions in which their guide surfaces extend are parallel, and the reference position of the first left rail arranged adjacent to the second left rail is shifted by the separation distance in one axial direction from the reference position of the second left rail. With the configuration of the above embodiment, the first right rail and the second right rail are arranged adjacent to one of the left and right sides of the second right rail with the directions in which their guide surfaces extend parallel to each other when viewed from above, and the reference position of the adjacent first right rail is shifted by the separation distance in one axial direction from the reference position of the second right rail.The first left rail and the second left rail are arranged adjacent to one of the left and right sides of the second left rail with the directions in which their guide surfaces extend parallel to each other when viewed from above, and the reference position of the adjacent first left rail is shifted by the separation distance in one axial direction from the reference position of the second left rail. As a result, it is possible to provide a foundation structure that is compact when viewed from above, yet easy to balance over long operating distances.

[0012] The basic structure according to an embodiment of the present invention is a single-brimmed wheel having a rolling surface which is a contact surface along which the moving body comes into contact with the guide surface and rolls, and in at least one guide structure, one single brimmed wheel of a pair of left and right single-brimmed wheels which roll on the pair of left and right rolling surfaces of at least one of the pair of left and right first rails or the pair of left and right second rails is provided on the right side of the rolling surface and the other single brimmed wheel is provided on the left side of the rolling surface. According to the configuration of the above embodiment, the moving body is a single-brimmed wheel having a rolling surface that is a contact surface that contacts and rolls on the guide surface. In at least one guide structure, one single brimmed wheel of a pair of left and right single-brimmed wheels that roll on the pair of left and right rolling surfaces of at least one of the pair of left and right first rails or the pair of left and right second rails is provided on the right side of the rolling surfaces and the other single brimmed wheel is provided on the left side of the rolling surfaces. As a result, it is possible to provide a basic structure that is compact yet has high rigidity around the Z axis.

[0013] A basic structure according to an embodiment of the present invention has at least one guide structure in which one rib of a pair of left and right rib wheels that roll on the pair of left and right rolling surfaces of the pair of left and right first rails and the pair of left and right second rails is provided on the right side of the rolling surfaces and one rib of the other rib wheel is provided on the left side of the rolling surfaces. With the configuration of the above embodiment, in at least one guide structure, one rib of one of a pair of left and right rib wheels that roll on the pair of left and right rolling surfaces of the pair of left and right first rails and the pair of left and right second rails is provided on the right side of the rolling surfaces and one rib of the other rib wheel is provided on the left side of the rolling surfaces. As a result, it is possible to provide a basic structure that is compact yet has even higher rigidity around the Z axis.

[0014] In the foundation structure according to an embodiment of the present invention, the intermediate member has a pair of groove shapes extending along the X-axis and a pair of groove shapes extending along the Y-axis formed on its side surface, and the upper structure and the lower structure each have a pair of engaged members that engage with the pair of groove shapes, so that the engaged members can move along the groove shapes when the supporting body and the supported body move horizontally relative to each other. With the configuration of the above embodiment, the intermediate member has a pair of groove shapes extending along the X-axis and a pair of groove shapes extending along the Y-axis formed on its side surface. The upper structure and the lower structure each have a pair of engaged members that engage with the pair of groove shapes. When the supporting body and the supported body move horizontally relative to each other, the engaged members can move along the groove shapes. As a result, floating can be suppressed.

[0015] In the basic structure according to an embodiment of the present invention, when the supporting body and the supported body move horizontally relative to each other and the moving body is guided by the guide member and positioned at the end of the specified stroke, the engaged member abuts against the end of the groove shape. With the configuration of the above embodiment, when the supporting body and the supported body move horizontally relative to each other and the moving body is guided by the guide member and positioned at the end of the specified stroke, the engaged member abuts against the end of the groove shape. As a result, movement beyond the stroke can be suppressed. Effect of the Invention

[0016] As described above, the basic structure according to the present invention has the following effects due to its configuration. The lower guide structure has a lower guide member having a guide surface extending along the X-axis and a lower movable body having a contact surface capable of contacting the guide surface, and restrains horizontal movement of the lower structure and the intermediate structure intersecting the X-axis and guides them relatively movable in the X-axis direction, or the upper guide structure has an upper guide member having a guide surface extending along the Y-axis and an upper movable body having a contact surface capable of contacting the guide surface, and restrains horizontal movement of the upper structure and the intermediate structure intersecting the Y-axis and guides them relatively movable in the Y-axis direction, and when the supporting body and the supported body move relatively horizontally, the contact surface moves within a predetermined stroke range. The rails move relative to one another while making contact with the guide surfaces, and as viewed from above, the vertical distance gradually increases as the movable body moves away from the reference position along the axial direction within the specified stroke range, and at least one of the first right rail and second right rail or the first left rail and second left rail are arranged adjacent to one another with the directions in which their guide surfaces extend parallel to one another as viewed from above, and the reference positions of the first right rail and the second right rail, or the reference positions of the first left rail and the second left rail arranged adjacent to one another, are shifted in the axial direction by the separation distance, thereby providing a basic structure that is compact when viewed from above. The axial distance between the reference position of the first right rail and the reference position of the second right rail arranged adjacent to each other, or the axial distance between the reference position of the first left rail and the reference position of the second left rail arranged adjacent to each other, is made shorter than a specified stroke, thereby providing a basic structure that is compact when viewed from above but has a long operating distance. When viewed from above, the first right rail and the second right rail are arranged adjacent to each other with their guide surfaces extending in parallel, and the reference position of the first right rail is shifted in the axial direction by the separation distance from the reference position of the second right rail, and when viewed from above, the first left rail and the second left rail are arranged adjacent to each other with their guide surfaces extending in parallel, and the reference position of the first left rail is shifted in the axial direction by the separation distance from the reference position of the second left rail, It is possible to provide a basic structure that is compact when viewed from above, yet has a long operating distance and is easy to balance. As viewed from above, the first right rail and the second right rail are arranged so that the directions in which their guide surfaces extend are parallel, and the first right rail is adjacent to one of the left or right sides of the second right rail, and the reference position of the first right rail is offset by the separation distance in one axial direction from the reference position of the second right rail, and the first left rail and the second left rail are arranged so that the directions in which their guide surfaces extend are parallel, and the first left rail is adjacent to one of the left or right sides of the second left rail, and the reference position of the first left rail is offset by the separation distance in one axial direction from the reference position of the second left rail, so that a basic structure which is compact as viewed from above yet has a long operating distance and is easy to balance can be provided. Since one rib of a pair of left and right ribbed wheels that roll on the pair of left and right rolling surfaces of at least one of the first right rail and the first left rail or the second right rail and the second left rail is provided on opposite left and right sides of the rolling surfaces, a basic structure that is compact yet has high rigidity around the Z axis can be provided. Since one rib of a pair of left and right ribbed wheels that roll on the pair of left and right rolling surfaces of the first right rail and the first left rail, and the second right rail and the second left rail, is provided on opposite left and right sides of the rolling surfaces, it is possible to provide a basic structure that is compact yet has even higher rigidity around the Z axis. When the supporting body and the supported body move horizontally relative to each other, the engaged members provided on the upper structure and the lower structure are able to move along the groove shape provided on the side of the intermediate member, thereby preventing the engaging members from floating up. When the supporting body and the supported body move horizontally relative to each other and the moving body is guided by the guiding member and positioned at the end of the specified stroke, the engaged member abuts against the end of the groove shape, thereby preventing movement beyond the stroke. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a first perspective view of a foundation structure according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a second perspective view of the foundation structure according to the embodiment of the present invention. [Diagram 3] FIG. 2 is an exploded perspective view of a foundation structure according to an embodiment of the present invention. [Figure 4] FIG. 2 is a plan view of a foundation structure according to the first embodiment of the present invention. [Diagram 5] FIG. 2 is a front view of the foundation structure according to the first embodiment of the present invention. [Figure 6] FIG. 2 is a side view of the foundation structure according to the first embodiment of the present invention. [Figure 7] 2 is a view of the foundation structure according to the first embodiment of the present invention taken along the line AA. FIG. [Figure 8] 1 is a view taken along the line BB of a foundation structure according to a first embodiment of the present invention; [Figure 9] 2 is a view of the foundation structure according to the first embodiment of the present invention taken along the line CC. [Figure 10] 1 is a view of a foundation structure according to a first embodiment of the present invention taken along the line DD. [Figure 11] 2 is an E-E cross-sectional view of the foundation structure according to the first embodiment of the present invention; FIG. [Figure 12] 2 is a FF cross-sectional view of the foundation structure according to the first embodiment of the present invention; FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The foundation structure according to the embodiment of the present invention is a structure that supports a supported object using a supporting body as a base. 1 to 3 are perspective views of a foundation structure according to an embodiment of the present invention. Here, for convenience of explanation, a pair of imaginary axes that intersect with each other in a horizontal plane will be called the X-axis and the Y-axis. For example, a pair of imaginary axes that are perpendicular to each other in a horizontal plane are called the X-axis and the Y-axis. The axis that intersects the X-axis and Y-axis is called the Z-axis.

[0019] The base structure according to the embodiment of the present invention is composed of an upper structure 100u, a lower structure 100d, an intermediate structure 200, an upper guide structure 300u, and a lower guide structure 300d.

[0020] The upper structure 100u is a structure that supports the supported object. The lower structure 100d is a structure supported by a support. The intermediate structure 200 is a structure located between the upper structure 100u and the lower structure 100d. The upper guide structure 300u is a guide structure that restrains horizontal movement of the upper structure 100u and the intermediate structure 200 intersecting the Y axis within a Y axis stroke range that is a predetermined stroke H1 along the Y axis, and guides them so that they can move freely relative to each other in the Y axis direction. The lower guide structure 300d is a guide structure that restrains horizontal movement of the lower structure 100d and the intermediate structure 200 intersecting the X-axis within the range of an X-axis stroke, which is a predetermined stroke H1 along the X-axis, and guides them so that they can move freely relative to each other in the X-axis direction.

[0021] At least one of the upper guide structure 300u and the lower guide structure 300d may be composed of a guide member and a moving body. For example, the upper guide structure 300u is composed of a guide member and a moving body. For example, the lower guide structure 300d is composed of a guide member and a moving body. The guide structure of the upper guide structure 300u may be composed of a guide member and a moving body, and the guide structure of the lower guide structure 300d may be composed of a guide member and a moving body.

[0022] The lower guide structure 300d is composed of a lower guide member 310d and a lower moving body 320d. The lower guide member 310d is a guide member that is fixed to one of the lower structure 100d and the intermediate structure 200 and has a guide surface S that extends along the X-axis. The lower moving body 320d is a moving body that is fixed to the other of the lower structure 100d and the intermediate structure 200 and has a contact surface K that can come into contact with the guide surface S. For example, the lower guide member 310d is a guide member fixed to the lower structure 100d and having a guide surface S extending along the X-axis, and the lower moving body 320d is a moving body fixed to the intermediate structure 200 and having a contact surface K that can come into contact with the guide surface S. For example, the lower guide member 310d is a guide member fixed to the intermediate structure 200 and having a guide surface S extending along the X-axis, and the lower moving body 320d is a moving body fixed to the lower structure 100d and having a contact surface K that can come into contact with the guide surface S.

[0023] The upper guide structure 300u is composed of an upper guide member 310u and an upper moving body 320u. The upper guide member 310u is a guide member that is fixed to one of the upper structure 100u and the intermediate structure 200 and has a guide surface S that extends along the Y axis. The upper moving body 320u is a moving body that is fixed to the other of the upper structure 100u and the intermediate structure 200 and has a contact surface K that can come into contact with the guide surface S. For example, the upper guide member 310u is a guide member fixed to the upper structure 100u and having a guide surface S extending along the Y axis, and the upper moving body 320u is a moving body fixed to the intermediate structure 200 and having a contact surface K that can contact the guide surface S. For example, the upper guide member 310u is a guide member fixed to the intermediate structure 200 and having a guide surface S extending along the Y axis, and the upper moving body 320u is a moving body fixed to the upper structure 100u and having a contact surface K that can come into contact with the guide surface S.

[0024] When the supporting body and the supported body move relatively horizontally, the moving bodies 320u, 320d move relatively while being guided by the guide members 310u, 310d with the contact surfaces K in contact with the guide surfaces S within the range of a predetermined stroke H1.

[0025] The position of the movable body on the guide member when the vertical distance between the movable body 320u, 320d and an imaginary horizontal plane fixed to the guide member 310u, 310d is smallest within the range of the predetermined stroke H1 is referred to as a reference position C. When viewed from above, the movable bodies 320u and 320d are guided by the guide members within the range of a predetermined stroke H1, and as they move away from the reference position C in the axial direction, the vertical distance gradually increases. The guide surface S may be a slope extending along the axial direction. For example, the guide surface S of the lower guide member 310d is a slope extending along the X-axis direction. For example, the guide surface S of the upper guide member 310u is a slope extending along the Y-axis direction.

[0026] The guide surface S may be a curved slope extending along the axial direction. The guide surface S may be a slope that extends along the axial direction and curves with a constant radius of curvature R. The guide surface S may be a slope that extends from a reference position along one side of the axial direction and curves with a constant radius of curvature R1, and may be a slope that extends from the reference position along the other side of the axial direction and curves with a constant radius of curvature R2. The radius of curvature R1 and the radius of curvature R2 may be different. The center of rotation of the radius of curvature R1 may coincide with the center of rotation of the radius of curvature R2. The center of rotation of the radius of curvature R1 and the center of rotation of the radius of curvature R2 do not have to coincide. When viewed from above, the center of rotation of the radius of curvature R1 may be located on the other axial side from the reference position, and the center of rotation of the radius of curvature R2 may be located on one axial side from the reference position. In this way, the guide surface S is bent at the reference position.

[0027] Guide members 310u, 310d are composed of a pair of left and right first rails, a first right rail 311r and a first left rail 311l, which form guide surfaces S, respectively, and a pair of left and right second rails, a second right rail 312r and a second left rail 312l. For example, lower guide member 310d is composed of a pair of left and right first rails, namely a first right rail 311r and a first left rail 311l, each of which forms a guide surface S, and a pair of left and right second rails, namely a second right rail 312r and a second left rail 312l. For example, upper guide member 310u is composed of a pair of left and right first rails, namely a first right rail 311r and a first left rail 311l, each of which forms a guide surface S, and a pair of left and right second rails, namely a second right rail 312r and a second left rail 312l.

[0028] When viewed from above, at least one of the first right rail 311r and the second right rail 312r or the first left rail 311l and the second left rail 312l are arranged adjacent to each other with the directions in which their guide surfaces S extend parallel to each other, and the reference position C of the first rail and the reference position C of the second rail arranged adjacent to each other are shifted in the axial direction by a separation distance H0. For example, when viewed from above, the first right rail 311r and the second right rail 312r are arranged adjacent to each other with the directions in which their guide surfaces S extend parallel to each other, and the reference position C of the first right rail 311r and the reference position C of the second right rail 312r arranged adjacent to each other are shifted in the axial direction by a separation distance H0. For example, when viewed from above, the first left rail 311l and the second left rail 312l are arranged adjacent to each other with the extension directions of their guide surfaces S parallel to each other, and the reference position C of the first left rail 311l and the reference position C of the second left rail 312l arranged adjacent to each other are shifted in the axial direction by a separation distance H0.

[0029] When viewed from above, the first right rail 311r and the second right rail 312r are arranged adjacent to each other with the directions in which their guide surfaces S extend parallel to each other, and the reference position C of the first right rail 311r arranged adjacent to each other is shifted in the axial direction from the reference position C of the second right rail 312r by a separation distance H0, When viewed from above, the first left rail 311l and the second left rail 312l are arranged adjacent to each other with the extension directions of their guide surfaces S parallel to each other, and the reference position C of the first left rail 311l arranged adjacent to each other may be shifted in the axial direction by a separation distance H0 from the reference position C of the second left rail 312l.

[0030] When viewed from above, the first right rail 311r and the second right rail 312r are arranged adjacent to each other with the directions in which their guide surfaces S extend parallel to each other, and the reference position C of the first right rail 311r arranged adjacent to each other is shifted by a separation distance H0 in one axial direction from the reference position C of the second right rail 312r, When viewed from above, the first left rail 311l and the second left rail 312l are arranged adjacent to each other with the directions in which their guide surfaces S extend parallel to each other, and the reference position C of the first left rail 311l arranged adjacent to each other may be shifted by a separation distance H0 in one axial direction from the reference position C of the second left rail 312l.

[0031] When viewed from above, the first right rail 311r and the second right rail 312r are arranged so that the directions in which their guide surfaces S extend are parallel to each other, and the first right rail 311r is arranged adjacent to one side of the second right rail 312r in the left-right direction, and the reference position C of the first right rail 311r arranged adjacent to each other is shifted by a separation distance H0 in one axial direction from the reference position C of the second right rail 312r, When viewed from above, the first left rail 311l and the second left rail 312l are arranged so that the directions in which the guide surfaces S of each other extend are parallel, and the first left rail 311r is arranged adjacent to one side of the second left rail 312l in the left-right direction, and the reference position C of the adjacent first left rail 311l may be shifted by a separation distance H0 in one axial direction from the reference position C of the second left rail 312l. For example, when viewed from above, the first right rail 311r and the second right rail 312r are arranged so that the directions in which the guide surfaces S of the first right rail 311r and the second right rail 312r extend are parallel to each other, and the first right rail 311r is arranged adjacent to the left side of the second right rail 312r, and the reference position C of the first right rail 311r arranged adjacent to each other is shifted by a separation distance H0 in one axial direction from the reference position C of the second right rail 312r, When viewed from above, the first left rail 311l and the second left rail 312l are arranged so that the directions in which the guide surfaces S of each other extend are parallel, and the first left rail 311r is arranged adjacent to the left side of the second left rail 312l, and the reference position C of the adjacently arranged first left rail 311l may be shifted by a separation distance H0 in one axial direction from the reference position C of the second left rail 312l.

[0032] When viewed from above, the first right rail and the second right rail are arranged adjacent to each other with the directions in which their guide surfaces S extend parallel to each other, and the reference position C of the first right rail arranged adjacent to each other is shifted by a separation distance H0 in one axial direction from the reference position C of the second right rail, When viewed from above, the first left rail and the second left rail are arranged adjacent to each other with the directions in which their guide surfaces S extend parallel to each other, and the reference position C of the first left rail arranged adjacent to each other may be shifted by a separation distance H0 in the other axial direction from the reference position C of the second left rail.

[0033] A distance H0 between a reference position C of the first rail and a reference position C of the second rail arranged adjacent to each other in the axial direction is shorter than a predetermined stroke H1. For example, the distance H0 between the reference position C of the first right rail 311r and the reference position C of the second right rail 312r arranged adjacent to each other in the axial direction is shorter than the predetermined stroke H1. For example, the distance H0 between the reference position C of the first left rail 311l and the reference position C of the second left rail 312l arranged adjacent to each other in the axial direction is shorter than the predetermined stroke H1.

[0034] The movable bodies 320u and 320d may be wheels with a single flange having a rolling surface that is a contact surface K that comes into contact with the guide surface S and rolls thereon. For example, the first right wheel 321r is a single-brimmed wheel that rolls on the guide surface S of the first right rail 311r, the second right wheel 322r is a single-brimmed wheel that rolls on the guide surface S of the second right rail 312r, the first left wheel 321l is a single-brimmed wheel that rolls on the guide surface S of the first left rail 311l, and the second left wheel 322l is a single-brimmed wheel that rolls on the guide surface S of the second left rail 312l. When the supported body is in a fixed position relative to the support, the first right wheel 321r, the second right wheel 322r, the first left wheel 321l and the second left wheel 322l are positioned at reference positions C of the first right rail 311r, the second right rail 312r, the first left rail 311l and the second left rail 312l which are respectively guided by them.

[0035] Of a pair of left and right ribbed wheels that roll on a pair of left and right rolling surfaces of at least one of the first right rail 311r and the first left rail 311l or the second right rail 312r and the second left rail 312l, one rib of one of the ribs may be provided on the right side of the rolling surfaces and one rib of the other rib wheel may be provided on the left side of the rolling surfaces.

[0036] Of a pair of left and right ribbed wheels rolling on a pair of left and right rolling surfaces of the first right rail 311r and the first left rail 311l, and the second right rail 312r and the second left rail 312l, one rib of the wheel with one rib may be provided on the right side of the rolling surfaces, and one rib of the wheel with the other rib may be provided on the left side of the rolling surfaces.

[0037] One of a pair of left and right ribbed wheels rolling on a pair of left and right rolling surfaces of the first right rail 311r and the first left rail 311l may have one rib of the wheel provided on the right side of the rolling surfaces and one rib of the other wheel provided on the left side of the rolling surfaces. For example, one flange of the first right wheel that rolls on the rolling surface of the first right rail 311r is provided on the right side of the rolling surface S, and one flange of the first left wheel 321l that rolls on the rolling surface of the first left rail 311l is provided on the left side of the rolling surface. For example, one flange of the first right wheel that rolls on the rolling surface of the first right rail 311r is provided on the left side of the rolling surface S, and one flange of the first left wheel 321l that rolls on the rolling surface of the first left rail 311l is provided on the right side of the rolling surface.

[0038] A pair of left and right ribbed wheels roll on a pair of left and right rolling surfaces of the second right rail 312r and the second left rail 312l, and one rib of one of the ribbed wheels may be provided on the right side of the rolling surfaces and one rib of the other ribbed wheel may be provided on the left side of the rolling surfaces. For example, one flange of the second right wheel 322r that rolls on the rolling surface of the second right rail 312r is provided on the right side of the rolling surface S, and one flange of the second left wheel 322l that rolls on the rolling surface of the second left rail 312l is provided on the left side of the rolling surface S. For example, one flange of the second right wheel 322r that rolls on the rolling surface of the second right rail 312r is provided on the left side of the rolling surface S, and one flange of the second left wheel 322l that rolls on the rolling surface of the second left rail 312l is provided on the right side of the rolling surface S.

[0039] One flange of the first right wheel 321r and one flange of the second right wheel 322r may be provided on the same side of the rolling surface. For example, one flange of the first right wheel 321r and one flange of the second right wheel 322r are provided on the same right side with respect to the rolling surface. For example, one flange of the first right wheel 321r and one flange of the second right wheel 322r are provided on the same left side with respect to the rolling surface.

[0040] One flange of the first left wheel 321l and one flange of the second left wheel 322l may be provided on the same side of the rolling surface. For example, one flange of the first left wheel 321l and one flange of the second left wheel 322l are provided on the same left side with respect to the rolling surface. For example, one flange of the first left wheel 321l and one flange of the second left wheel 322l are provided on the same right side with respect to the rolling surface.

[0041] The intermediate member 200 may be formed on a side surface with a pair of groove shapes 211 each extending along the X-axis and two pairs of groove shapes 211 each extending along the Y-axis. The upper structure 100u and the lower structure 100d may each have a pair of engaged members 120u, 120d that engage with a pair of groove shapes 211. When the supporting body and the supported body move horizontally relative to each other, the engaged members 120u and 120d can move along the groove shape 211. A pair of engaged members 120d of the lower structure 100d are fitted into groove shapes 211 extending along the X-axis formed in the intermediate structure 200 so as to be movable in the direction along the X-axis. A pair of engaged members 120u of the upper structure 100u are fitted into groove shapes 211 extending along the Y axis formed in the intermediate structure 200 so as to be movable in a direction along the X axis. As a result, the relative movement of the lower structure 100d and the upper structure 100u along the Z axis is restricted. Furthermore, the rotation of the lower structure 100d and the upper structure 100u about the Z axis is restricted. The z-axis is an axis perpendicular to the X-axis and the Y-axis.

[0042] The intermediate member 200 may be composed of a main structure 210 that is substantially square-shaped when viewed from above, and a sub-structure 220 that is fixed to the main structure and supports the moving body. A main structure 210 is formed on its side with a pair of groove shapes 211 each extending along the X-axis and two pairs of groove shapes 211 each extending along the Y-axis.

[0043] When the supporting body and the supported body move relatively horizontally and the moving body is guided by the guide member and positioned at the end of the predetermined stroke H1, the engaged members 120u, 120d may come into contact with the end of the groove shape. For example, when the supporting body and the supported body move horizontally relative to each other and the movable body of the lower guide structure 300d is guided by the guide member and moves along the X-axis direction until it reaches the end of a predetermined stroke H1, the engaged member 120u of the lower structure 100d abuts against the end of the groove shape 211. For example, when the supporting body and the supported body move horizontally relative to each other and the movable body of the upper guide structure 300u is guided by the guide member and moves along the Y-axis direction until it reaches the end of a predetermined stroke H1, the engaged member 120u of the upper structure 100u abuts against the end of the groove shape 211.

[0044] The intermediate member 200 may support the first right wheel 321r, the first left wheel 321l, the second right wheel 322r, and the second left wheel 322l of the lower guide structure 300d so as to be rotatable about a horizontal axis perpendicular to the X-axis. The lower structure 100d may support the first right rail 311r, the first left rail 311l, the second right rail 312r, and the second left rail 322l of the lower guide structure 300d. The intermediate member 200 may support the first right wheel 321r, the first left wheel 321l, the second right wheel 322r, and the second left wheel 322l of the upper guide structure 300u so as to be rotatable about a horizontal axis perpendicular to the Y axis. The upper structure 100u may support a first right rail 311r, a first left rail 311l, a second right rail 312r, and a second left rail 322l of the upper guide structure 300u.

[0045] For example, the sub-structure 220 of the intermediate member 200 may rotatably support the first right wheel 321r, the first left wheel 321l, the second right wheel 322r, and the second left wheel 322l of the lower guide structure 300d. For example, the sub-structure 220 of the intermediate member 200 may rotatably support the first right wheel 321r, the first left wheel 321l, the second right wheel 322r, and the second left wheel 322l of the upper guide structure 300u.

[0046] A basic structure according to a first embodiment of the present invention will be described below with reference to the drawings. FIG. 4 is a plan view of the foundation structure according to the first embodiment of the present invention. FIG. 5 is a front view of the foundation structure according to the first embodiment of the present invention. FIG. 6 is a side view of the foundation structure according to the first embodiment of the present invention. FIG. 7 is a view of the foundation structure according to the first embodiment of the present invention as seen from an arrow AA. FIG. 8 is a view of the foundation structure according to the first embodiment of the present invention as seen from an arrow BB. FIG. 9 is a view of the foundation structure according to the first embodiment of the present invention as seen from an arrow CC. FIG. 10 is a view of the foundation structure according to the first embodiment of the present invention as seen from an arrow DD. FIG. 11 is a cross-sectional view of the foundation structure according to the first embodiment of the present invention as seen from an arrow EE. FIG. 12 is a cross-sectional view of the foundation structure according to the first embodiment of the present invention as seen from an arrow FF. In the foundation structure according to the first embodiment of the present invention, both the upper guide structure and the lower guide structure have the configuration of the present invention.

[0047] The foundation structure according to the first embodiment of the present invention is composed of an upper structure 100u, a lower structure 100d, an intermediate structure 200, an upper guide structure 300u, and a lower guide structure 300d.

[0048] The upper structure 100u is composed of an upper structure body 110u and an engaged member 120u. The lower structure 100d is composed of a lower structure body 110d and an engaged member 120d.

[0049] The lower guide structure 300d is composed of a lower guide member 310d and a lower moving body 320d. The lower guide member 310d is a guide member fixed to the lower structure and having a guide surface S extending along the X-axis. The lower moving body 320d is a moving body that is fixed to the intermediate structure 200 and has a contact surface K that can come into contact with the guide surface S.

[0050] The upper guide structure 300u is composed of an upper guide member 310u and an upper moving body 320u. The upper guide member 310u is fixed to the upper structure 100u and has a guide surface S extending along the Y axis. The upper moving body 320u is a moving body that is fixed to the intermediate structure 200 and has a contact surface K that can come into contact with the guide surface S.

[0051] When the supporting body and the supported body move relatively horizontally, the lower moving body 320d moves relatively while being guided by the lower guide member 310d with the contact surface K in contact with the guide surface S within the range of a predetermined stroke H1. When the supporting body and the supported body move relatively horizontally, the upper moving body 320u moves relatively while being guided by the upper guide member 310u with the contact surface K in contact with the guide surface S within the range of a predetermined stroke H1.

[0052] The position of the lower moving body 320d when the vertical distance between the lower moving body 320d and an imaginary horizontal plane fixed to the lower guide member 310d is smallest within the range of the predetermined stroke H1 is referred to as the reference position C. When viewed from above, as the lower moving body 320d moves away from the reference position C in the axial direction within the range of the predetermined stroke H1, the vertical distance gradually increases. The position of the moving body when the vertical distance between the upper moving body 320u and an imaginary horizontal plane fixed to the upper guide member 310u is smallest within the range of the predetermined stroke H1 is referred to as the reference position C. When viewed from above, as the upper moving body 320u moves away from the reference position C in the axial direction within the range of the predetermined stroke H1, the vertical distance gradually increases.

[0053] Lower guide member 310d is composed of a pair of left and right first rails, namely, first right rail 311r and first left rail 311l, which each form a guide surface S, and a pair of left and right second rails, namely, second right rail 312r and second left rail 312l. Upper guide member 310u is composed of a pair of left and right first rails, namely a first right rail 311r and a first left rail 311l, which form guide surfaces S respectively, and a pair of left and right second rails, namely a second right rail 312r and a second left rail 312l.

[0054] When viewed from above, the first right rail 311r and the second right rail 312r of the lower guide structure 300d are parallel in the direction along the X-axis along which each other's guide surfaces S extend, and the first right rail 311r is arranged adjacent to one of the left or right sides of the second right rail 312r, and the reference position C of the first right rail 311r and the reference position C of the second right rail 312r arranged adjacent to each other are shifted in the axial direction by a separation distance H0. When viewed from above, the first left rail 311l and the second left rail 312l of the lower guide structure 300d are parallel in the direction along the X-axis along which each other's guide surfaces S extend, and the first left rail 311l is arranged adjacent to one of the left or right sides of the second left rail 312l, and the reference position C of the first left rail 311l and the reference position C of the second left rail 312l arranged adjacent to each other are shifted in the axial direction by a separation distance H0.

[0055] When viewed from above, the first right rail 311r and the second right rail 312r of the upper guide structure 300d are parallel in the direction along the Y-axis along which each other's guide surfaces S extend, and the first right rail 311r is arranged adjacent to the left side of the second right rail 312r, and the reference position C of the first right rail 311r and the reference position C of the second right rail 312r arranged adjacent to each other are shifted in the axial direction by a separation distance H0. When viewed from above, the first left rail 311l and the second left rail 312l of the upper guide structure 300d are arranged so that the direction along the Y-axis along which each of their guide surfaces S extends is parallel, and the first left rail 311l is arranged adjacent to the left side of the second left rail 312l, and the reference position C of the first left rail 311l and the reference position C of the second left rail 312l arranged adjacent to each other are shifted in the axial direction by a separation distance H0.

[0056] The distance H0 along the X axis between the reference position C of the first right rail 311r and the reference position C of the second right rail 312r of the adjacent lower guide structure 300d is shorter than the predetermined stroke H1. The distance H0 along the X axis between the reference position C of the first left rail 311l and the reference position C of the second left rail 312l of the adjacent lower guide structure 300d is shorter than the predetermined stroke H1.

[0057] The separation distance H0 along the Y axis between the reference position C of the first right rail 311r and the reference position C of the second right rail 312r of the adjacent upper guide structure 300u is shorter than the predetermined stroke H1. The distance H0 along the Y axis between the reference position C of the first left rail 311l and the reference position C of the second left rail 312l of the adjacent upper guide structure 300u is shorter than the predetermined stroke H1.

[0058] The movable bodies 320u and 320d of the lower guide structure 300d are wheels with a single flange having a rolling surface which is a contact surface K that comes into contact with the guide surface S and rolls thereon. The movable bodies 320u and 320d of the upper guide structure 300u are single-brimmed wheels having rolling surfaces which are contact surfaces K that come into contact with the guide surfaces S and roll thereon.

[0059] One flange of the first right wheel that rolls on the rolling surface of the first right rail 311r is provided on the right side of the rolling surface S, and one flange of the first left wheel 321l that rolls on the rolling surface of the first left rail 311l is provided on the left side of the rolling surface. One flange of the second right wheel 322r that rolls on the rolling surface of the second right rail 312r is provided on the right side of the rolling surface S, and one flange of the second left wheel 322l that rolls on the rolling surface of the second left rail 312l is provided on the left side of the rolling surface S.

[0060] As a result, one side of the flange of the first right wheel 321r and one side of the flange of the second right wheel 322r are provided on the same right side of the rolling surface, and one side of the flange of the first left wheel 321l and one side of the flange of the second left wheel 322l are provided on the same left side of the rolling surface.

[0061] The intermediate member 200 is composed of a main structure 210 that is substantially square-shaped when viewed from above, and a sub-structure 220 that is fixed to the main structure and supports a moving body. A main structure 210 is formed on its side with a pair of groove shapes 211 each extending along the X-axis and two pairs of groove shapes 211 each extending along the Y-axis.

[0062] When the supporting body and the supported body move horizontally relative to each other and the movable body of the lower guide structure 300d is guided by the guide member and moves along the X-axis direction until it reaches the end of the specified stroke H1, the engaged member 120u of the lower structure 100d abuts against the end of the groove shape 211. When the supporting body and the supported body move horizontally relative to each other and the movable body of the upper guide structure 300u is guided by the guide member and moves along the Y-axis direction until it reaches the end of the specified stroke H1, the engaged member 120u of the upper structure 100u abuts against the end of the groove shape 211.

[0063] The sub-structure 220 supports the first right wheel 321r, the first left wheel 321l, the second right wheel 322r, and the second left wheel 322l of the lower guide structure 300d via friction materials so as to be rotatable about the Y axis. The sub-structure 220 supports the first right wheel 321r, the first left wheel 321l, the second right wheel 322r, and the second left wheel 322l of the upper guide structure 300u via friction materials so as to be rotatable about the X-axis.

[0064] The operation of the basic structure according to the embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the posture of the base structure when the support and supported elements are in their normal positions. FIG. 2 shows the posture of the foundation structure when the supporting body is supported by the supported body and moves horizontally from a normal position.

[0065] When the supporting body and the supported body are in their normal positions, in the upper guide structure 300u and the lower guide structure 300, the first right wheel 321r is guided by the guide surface S of the first right rail 311r and is located at the reference position C, the second right wheel 322r is guided by the guide surface S of the second right rail 312r and is located at the reference position C, the first left wheel 321l is guided by the guide surface S of the first left rail 311l and is located at the reference position C, and the second left wheel 322l is guided by the guide surface S of the second left rail 312l and is located at the reference position C. The first right rail, the second right rail, the first left rail, and the second left rail have guide surfaces that extend along the axial direction and are curved with a constant radius of curvature R.

[0066] For example, an earthquake occurs, and horizontal acceleration due to the earthquake acts on the support. A horizontal relative displacement occurs between the supporting body and the supported body, and in the upper guide structure 300u and the lower guide structure 300, the first right wheel 321r is guided by the guide surface S of the first right rail 311r and leaves the reference position C, the second right wheel 322r is guided by the guide surface S of the second right rail 312r and leaves the reference position C, the first left wheel 321l is guided by the guide surface S of the first left rail 311l and leaves the reference position C, and the second left wheel 322l is guided by the guide surface S of the second left rail 312l and leaves the reference position C. As the wheel moves away from the reference position C, in the upper guide structure 300u and the lower guide structure 300, a horizontal restoring force acts on the first right wheel 321r, the second right wheel 322r, the first left wheel 321l, and the second left wheel 322l. The first right wheel 321r, the second right wheel 322r, the first left wheel 321l, and the second left wheel 322l are prevented from moving relative to each other beyond the predetermined stroke H1. Relative rotation about the Z axis between the supporting body and the supported body is suppressed. When a pull-out force acts on the supported object, an anti-locking force is generated, and the supported object is prevented from floating up.

[0067] As described above, the basic structure according to the present invention has the following effects due to its configuration. The lower guide structure 300d has a lower guide member 310d having a guide surface S extending along the X-axis and a lower moving body 320d having a contact surface K that can come into contact with the guide surface S, and guides the lower structure 100d and the intermediate structure 200 so as to be relatively movable in the X-axis direction while restricting horizontal movement intersecting the X-axis, or the upper guide structure 300u has an upper guide member 310u having a guide surface S extending along the Y-axis and an upper moving body 320u having a contact surface K that can come into contact with the guide surface S, and guides the upper structure 100u and the intermediate structure 200 so as to be relatively movable in the Y-axis direction while restricting horizontal movement intersecting the Y-axis, and when the supporting body and the supported body move relatively horizontally, the contact surface K moves within a range of a predetermined stroke H1. move relatively while contacting guide surface S, and as viewed from above, the vertical distance gradually increases as movable bodies 320u, 320d move away from reference position C along the axial direction within a predetermined stroke H1, and at least one of first right rail 311r and second right rail 312r, or first left rail 311l and second left rail 312l, are arranged adjacent to each other with the directions in which their guide surfaces S extend parallel to each other, and the reference position C of the first right rail and the reference position C of the second right rail, or the reference position C of the first left rail and the reference position C of the second left rail, which are arranged adjacent to each other, are shifted in the axial direction by a separation distance H0, thereby providing a basic structure that is compact when viewed from above. The axial separation distance H0 between the reference position C of the first right rail 311r and the reference position C of the second right rail 312r, which are arranged adjacent to each other, or the axial separation distance H0 between the reference position C of the first left rail 311l and the reference position C of the second left rail 312l, which are arranged adjacent to each other, is shorter than the specified stroke H1, thereby providing a basic structure that is compact when viewed from above but has a long operating distance. When viewed from above, the first right rail 311r and the second right rail 312r are arranged adjacent to each other with the directions in which their guide surfaces S extend parallel to each other, and the reference position C of the first right rail 311r is offset in the axial direction from the reference position C of the second right rail 312r by a separation distance H0, and when viewed from above, the first left rail 311l and the second left rail 312l are arranged adjacent to each other with the directions in which their guide surfaces S extend parallel to each other, and the reference position C of the first left rail 311l is offset in the axial direction from the reference position C of the second left rail 312l by a separation distance H0, so that a basic structure which is compact when viewed from above yet has a long operating distance and is easy to balance can be provided. When viewed from above, the first right rail 311r and the second right rail 312r are arranged so that the directions in which their guide surfaces S extend are parallel to each other, and the first right rail 311r is adjacent to one of the left or right sides of the second right rail 312r, and the reference position C of the first right rail 311r is shifted in one axial direction from the reference position C of the second right rail 312r by a separation distance H0, and when viewed from above, the first left rail 311l and the second left rail 312l are arranged so that the directions in which their guide surfaces S extend are parallel to each other, and the first left rail 311l is adjacent to one of the left or right sides of the second left rail 312l, and the reference position C of the first left rail 311l is shifted in one axial direction from the reference position C of the second left rail 312l by the separation distance H0, so that a basic structure which is compact when viewed from above yet has a long operating distance and is easy to balance can be provided. Since one rib of a pair of left and right ribbed wheels that roll on a pair of left and right rolling surfaces S of at least one of the first right rail 311r and the first left rail 311l or the second right rail 312r and the second left rail 312l is provided on opposite left and right sides of the rolling surfaces S, a basic structure that is compact yet has high rigidity around the Z axis can be provided. Since one rib of a pair of left and right ribbed wheels that roll on a pair of left and right rolling surfaces S of the first right rail 311r and the first left rail 311l, and the second right rail 312r and the second left rail 312l is arranged on opposite left and right sides of the rolling surfaces, a basic structure can be provided that is compact yet has even higher rigidity around the Z axis. When the supporting body and the supported body move horizontally relative to each other, the engaged members 120u, 120d provided on the upper structure 100u and the lower structure 100d are able to move along the groove shape 211 provided on the side surface of the intermediate member 200, thereby preventing the engaged members 120u, 120d from floating up. When the supporting body and the supported body move horizontally relative to each other and the moving body is guided by the guide member and positioned at the end of the specified stroke H1, the engaged members 120u, 120d abut against the end of the groove shape 211, thereby preventing movement beyond the stroke H1.

[0068] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the gist of the invention. In the embodiment, the guide member is configured with a pair of left and right first rails and a pair of left and right second rails, and the moving body is configured with a pair of left and right first wheels and a pair of left and right second wheels, but the present invention is not limited to this. For example, the guide member may be configured with a pair of left and right first rails, a pair of left and right second rails, and a pair of left and right third rails, and the moving body may be configured with a pair of left and right first wheels, a pair of left and right second wheels, and a pair of left and right third wheels. Also, the guide member may be configured with a pair of left and right first rails, a pair of left and right second rails, a pair of left and right third rails, and a pair of left and right Nth rails, and the moving body may be configured with a pair of left and right first wheels, a pair of left and right second wheels, a pair of left and right third wheels, and a pair of left and right Nth wheels. In the embodiment, the upper guide structure 300u and the lower guide structure 300d have the same configuration except for the axial direction, but are not limited to this. For example, only one of the upper guide structure 300u and the lower guide structure 300d may have the configuration of the present application. Furthermore, the separation distance H0 and the predetermined stroke H1 between the upper guide structure 300u and the lower guide structure 300d may be different from each other. Furthermore, the separation distance H0 between the pair of left and right rails and the predetermined stroke H1 may be different from each other. A separate damper may also be provided between the upper structure 100u and the lower structure 100d. [Explanation of symbols]

[0069] H0 separation distance H1 Specific stroke C Reference position K contact surface S Guideway XX axis YY axis 100u superstructure 110u Superstructure body 120u Engaged member 100d Undercarriage 110d Lower structure body 120d Engaged member 200 Intermediate structure 210 Main structure 211 Groove shape 220 Substructure 300u Upper guide structure 300d Lower guide structure 310u upper guide member 310d Lower guide member 311r first right rail 311l First left rail 312r 2nd right rail 312l Second left rail 320d Lower moving body 320u upper moving body 321r first right wheel 321l First left wheel 322r second right wheel 322l 2nd left wheel [Prior art documents] [Patent documents]

[0070] [Patent Document 1] Patent No. 4580468 [Patent Document 2] Patent No. 5416496 [Patent Document 3] Patent Publication No. 2020-23992 [Patent Document 4] Patent Publication No. 2018-12942

Claims

1. A foundation structure that supports a supported object on a support, A pair of imaginary axes that intersect in a horizontal plane are called the X-axis and the Y-axis. An upper structure supporting the supported object; a substructure supported by the support; an intermediate structure located between the upper structure and the lower structure; an upper guide structure which is a guide structure that restricts horizontal movement of the upper structure and the intermediate structure in a direction intersecting the Y axis within a range of a Y-axis stroke that is a predetermined stroke and guides the upper structure and the intermediate structure so as to be freely movable relative to each other in the Y-axis direction; a lower guide structure that guides the lower structure and the intermediate structure so as to be movable relative to each other in the X-axis direction while restricting horizontal movement of the lower structure and the intermediate structure within a range of an X-axis stroke that is a predetermined stroke; Equipped with the lower guide structure includes a lower guide member that is a guide member fixed to the lower structure and has a guide surface extending along the X-axis, and a lower moving body that is a moving body that is fixed to the intermediate structure and has a contact surface that can come into contact with the guide surface, and the upper guide structure includes an upper guide member that is a guide member fixed to the upper structure and has a guide surface extending along the Y axis, and an upper movable body that is a movable body that is fixed to the intermediate structure and has a contact surface that can come into contact with the guide surface, When the supporting body and the supported body move relatively horizontally, the moving body moves relatively while being guided by the guide member while the contact surface comes into contact with the guide surface within a predetermined stroke range, When the position of the movable body on the guide member when the vertical distance between the movable body and a virtual horizontal plane fixed to the guide member is smallest within the range of the predetermined stroke is called a reference position, the vertical distance gradually increases as the movable body moves away from the reference position along the axial direction within the range of the predetermined stroke when viewed from above, The guide member of the lower guide structure has a pair of left and right first rails, a first right rail and a first left rail, and a pair of left and right second rails, a second right rail and a second left rail, each of which forms the guide surface when viewed horizontally along the X-axis direction, When viewed from above, at least one of the first right rail and the second right rail or the first left rail and the second left rail is arranged adjacent to each other with the extending directions of the guide surfaces parallel to each other, and a reference position of the first rail and a reference position of the second rail arranged adjacent to each other are shifted by a separation distance in the X-axis direction. The guide member of the upper guide structure has a pair of left and right first rails, a first right rail and a first left rail, and a pair of left and right second rails, a second right rail and a second left rail, each of which forms the guide surface when viewed horizontally along a line of sight in the Y-axis direction, When viewed from above, at least one of the first right rail and the second right rail or the first left rail and the second left rail are arranged adjacent to each other with the directions in which their guide surfaces extend parallel to each other, and a reference position of the first rail and a reference position of the second rail arranged adjacent to each other are shifted by a separation distance in the Y-axis direction, The moving body has wheels that roll on rails, the intermediate structure supports a pair of left and right first wheels that roll on a pair of left and right first rails of the lower guide structure, a pair of left and right second wheels that roll on a pair of left and right second rails of the lower guide structure, a pair of left and right first wheels that roll on a pair of left and right first rails of the upper guide structure, and a pair of left and right second wheels that roll on a pair of left and right second rails of the upper guide structure, so as to be rotatable about a horizontal axis; The intermediate structure has a main structure that is substantially square when viewed from above, and a sub-structure that is surrounded and supported by the main structure, The movable body of the lower guide structure and the movable body of the upper guide structure are supported by the sub-structure.

1. A base structure comprising:

2. The sub-structure is formed with a plurality of voids penetrating vertically, When viewed from above, the sub-structure supports a pair of left and right first wheels that roll on a pair of left and right first rails of the lower guide structure, a pair of left and right second wheels that roll on a pair of left and right second rails of the lower guide structure, a pair of left and right first wheels that roll on a pair of left and right first rails of the upper guide structure, and a pair of left and right second wheels that roll on a pair of left and right second rails of the upper guide structure so as to fit within the gap and to be rotatable about a horizontal axis; 2. The base structure according to claim 1 .

3. The main structure has a pair of groove shapes extending along the X-axis and a pair of groove shapes extending along the Y-axis on a side surface thereof, the lower structure has a pair of engaged members that engage with a pair of the groove shapes extending along the X axis, The upper structure has a pair of engaged members that engage with a pair of the groove shapes extending along the Y axis, When the supporting member and the supported member move horizontally relative to each other, the engaged member can move along the groove shape.

3. The base structure according to claim 2.

4. A foundation structure that supports a supported object on a support, A pair of imaginary axes that intersect in a horizontal plane are called the X-axis and the Y-axis. An upper structure supporting the supported object; a substructure supported by the support; an intermediate structure located between the upper structure and the lower structure; an upper guide structure which is a guide structure that restricts horizontal movement of the upper structure and the intermediate structure in a direction intersecting the Y axis within a range of a Y-axis stroke that is a predetermined stroke and guides the upper structure and the intermediate structure so as to be freely movable relative to each other in the Y-axis direction; a lower guide structure that guides the lower structure and the intermediate structure so as to be movable relative to each other in the X-axis direction while restricting horizontal movement of the lower structure and the intermediate structure within a range of an X-axis stroke that is a predetermined stroke; Equipped with the lower guide structure includes a lower guide member that is a guide member fixed to one of the lower structure and the intermediate structure and has a guide surface extending along the X-axis, and a lower moving body that is a moving body that is fixed to the other of the lower structure and the intermediate structure and has a contact surface that can come into contact with the guide surface, or the upper guide structure includes an upper guide member that is a guide member fixed to one of the upper structure and the intermediate structure and having a guide surface extending along the Y axis, and an upper movable body that is a movable body fixed to the other of the upper structure and the intermediate structure and having a contact surface that can come into contact with the guide surface, When the supporting body and the supported body move relatively horizontally, the moving body moves relatively while being guided by the guide member while the contact surface comes into contact with the guide surface within a predetermined stroke range, When the position of the movable body on the guide member when the vertical distance between the movable body and a virtual horizontal plane fixed to the guide member is smallest within the range of the predetermined stroke is called a reference position, the vertical distance gradually increases as the movable body moves away from the reference position along the axial direction within the range of the predetermined stroke when viewed from above, the guide member has a pair of left and right first rails, a first right rail and a first left rail, each of which forms the guide surface, and a pair of left and right second rails, a second right rail and a second left rail, When viewed from above, at least one of the first right rail and the second right rail or the first left rail and the second left rail are arranged adjacent to each other with the directions in which their guide surfaces extend parallel to each other, and a reference position of the first rail and a reference position of the second rail arranged adjacent to each other are shifted in the axial direction by a separation distance, The intermediate structure has a main structure that is substantially square when viewed from above, and a sub-structure that is surrounded and supported by the main structure, The movable body of the lower guide structure and the movable body of the upper guide structure are supported by the sub-structure.

1. A base structure comprising:

5. A foundation structure that supports a supported object on a support, A pair of imaginary axes that intersect in a horizontal plane are called the X-axis and the Y-axis. An upper structure supporting the supported object; a substructure supported by the support; an intermediate structure located between the upper structure and the lower structure; an upper guide structure which is a guide structure that restricts horizontal movement of the upper structure and the intermediate structure in a direction intersecting the Y axis within a range of a Y-axis stroke that is a predetermined stroke and guides the upper structure and the intermediate structure so as to be freely movable relative to each other in the Y-axis direction; a lower guide structure that guides the lower structure and the intermediate structure so as to be movable relative to each other in the X-axis direction while restricting horizontal movement of the lower structure and the intermediate structure within a range of an X-axis stroke that is a predetermined stroke; Equipped with the lower guide structure includes a lower guide member that is a guide member fixed to the lower structure and has a guide surface extending along the X-axis, and a lower moving body that is a moving body that is fixed to the intermediate structure and has a contact surface that can come into contact with the guide surface, and the upper guide structure includes an upper guide member that is a guide member fixed to the upper structure and has a guide surface extending along the Y axis, and an upper movable body that is a movable body that is fixed to the intermediate structure and has a contact surface that can come into contact with the guide surface, When the supporting body and the supported body move relatively horizontally, the moving body moves relatively while being guided by the guide member while the contact surface comes into contact with the guide surface within a predetermined stroke range, When the position of the movable body on the guide member when the vertical distance between the movable body and a virtual horizontal plane fixed to the guide member is smallest within the range of the predetermined stroke is called a reference position, the vertical distance gradually increases as the movable body moves away from the reference position along the axial direction within the range of the predetermined stroke when viewed from above, the guide member has a pair of left and right first rails, a first right rail and a first left rail, each of which forms the guide surface, and a pair of left and right second rails, a second right rail and a second left rail, When viewed from above, at least one of the first right rail and the second right rail or the first left rail and the second left rail are arranged adjacent to each other with the directions in which their guide surfaces extend parallel to each other, and a reference position of the first rail and a reference position of the second rail arranged adjacent to each other are shifted in the axial direction by a separation distance, The moving body has wheels that roll on rails, The intermediate structure is formed with a plurality of voids penetrating vertically, When viewed from above, the intermediate structure supports a pair of left and right first wheels that roll on a pair of left and right first rails of the lower guide structure, a pair of left and right second wheels that roll on a pair of left and right second rails of the lower guide structure, a pair of left and right first wheels that roll on a pair of left and right first rails of the upper guide structure, and a pair of left and right second wheels that roll on a pair of left and right second rails of the upper guide structure so as to fit within the gap and to be rotatable about a horizontal axis; 1. A base structure comprising:

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