JP2022129012A - Joint cover device for floor - Google Patents

Abstract

To provide a joint cover device for a floor having expansible/contractive support beams supporting a joint cover body extended to the joint and having excellent durability and expansible/contractible smoothly in case of an earthquake, and suppressed in cost necessary for manufacturing and constructing.SOLUTION: An expansible/contractive support beam with both ends pivoted to a connection substrate heled by both buildings, respectively, is formed of an inner support beam body 52 and a pair of right and left side support bodies 53, 53, side rotary rollers 74 of the side support bodies 53 are relatively movably engaged between upper and lower guide parts 67, 68 forming a guide rail 66 of the inner support beam body 52, and inner rotary rollers 64 of the inner support beam body 52 are relatively movably engaged between upper and lower guide parts 77, 78 forming a guide rail 76 of the side support beam body 53, and thus the inner support beam body 52 and the right and left side support bodies 53, 53 are connected.SELECTED DRAWING: Figure 8

Description

The present invention relates to a floor joint covering device for covering joints between floors of adjacent buildings.

BACKGROUND ART In recent years, in order to minimize damage caused by earthquakes, many buildings have been constructed whose lower parts are supported by seismic isolation devices having a buffer function. Joints capable of absorbing displacement due to an earthquake are formed between buildings with such a seismic isolation structure, and floor joint cover devices are arranged to cover such joints.

As the floor joint covering device, for example, the configuration of Patent Document 1 has been proposed. This structure comprises a plurality of expandable supports whose both ends are pivotally supported on the side walls of adjacent buildings via joints, a plurality of bar members arranged side by side on the supports at predetermined intervals, and A section comprises a plurality of pantograph-like expansion links pivotally supported on each building side wall and each bar member pivotally supported on the pivot section, and a plurality of joint plates respectively fixed to each bar member.

JP 2005-248466 A

In the above-described conventional construction, a plurality of supports support the joint plate via bar members, and the support bears the weight of the joint plate and the weight of people or objects moving on the joint plate. hangs. In addition, the joint plate is relatively heavy because it must be strong and rigid enough to support people and objects moving over the joint plate. Therefore, the support is required to have both a function of stably supporting the joint plate and a person or object moving on the joint plate and a function of smooth expansion and contraction. Such a configuration is required to improve these functions.

In addition, in the conventional structure of Patent Document 1 mentioned above, both ends of the support are pivotally supported on the side walls of the building. , the weight of the joint plate and the weight of persons and objects moving over the joint plate. Therefore, it is necessary to make the connecting portions between both end portions of the support and the side wall of the building have a structure capable of withstanding the load. However, a structure that can withstand the load while enabling the support to rotate smoothly with respect to the building requires a relatively large size, special materials and mechanisms, etc., and is difficult to manufacture and construct. There was a problem of increased cost.

The present invention provides a telescopic support beam (corresponding to the support body of the conventional structure) for supporting people and objects moving across joints, which has excellent resistance and can smoothly expand and contract during an earthquake, and is suitable for manufacturing and construction. A floor joint covering device capable of suppressing the required cost is proposed.

The present invention comprises connecting bases respectively held by side edges of adjacent buildings via joints, and a plurality of cover plates arranged side by side in the width direction of the joints. and a joint cover body which is relatively slidable in the direction of the joint, and which is provided so as to be able to expand and contract in the joint width direction. In a floor joint cover device comprising a telescopic support beam, the connection base is provided on a side edge of the building, and a horizontal receiving edge that slidably supports at least an end portion of the telescopic support beam; A pivotal support section is provided upright on the horizontal receiving edge, and the end of the expandable support beam is connected so as to be able to tilt in the horizontal direction and the vertical direction, and the expandable support beam extends along the width direction of the joint. One end of the central support beam is pivotally connected to the pivotal support portions of both buildings, and the other end is relatively to the left and right sides of the central support beam in the joint width direction. and a pair of left and right side support beams that are slidably connected to each other and support the middle support beams. The left and right intermediate rotating rollers are rotatably connected to the rotating shafts projecting from the center beam rod portion to the left and right sides, respectively, and the upper and lower rollers are extended along the joint width direction with a gap in the vertical direction. A middle guide rail is provided on each of the left and right sides of the middle beam rod portion, and the side support beam body is pivotally connected at one end to the pivotally connected support portion of the connection base. and upper and lower guide portions that are rotatably connected to a rotating shaft that protrudes from the side beam rod portion toward the left and right sides and that constitutes the middle guide rail. A side rotating roller fitted between them so as to be relatively movable in the joint width direction, and the side beam rod portion are disposed on the same left and right side as the side rotating rollers, with a gap in the vertical direction. A side guide rail is formed by a pair of upper and lower guide portions extending along the joint width direction, and the middle rotation roller is fitted between the guide portions so as to be relatively movable in the joint width direction. The floor joint covering device is characterized in that it is a joint covering device for floors.

With such a configuration, during an earthquake, the expansion and contraction support beams expand and contract due to the relative movement of the middle support beams and the left and right side support beams, allowing them to follow the relative displacement of both structures. be. Here, the middle support beams and the side support beams are configured so that the middle rotation rollers of the middle support beams are relatively movable in the joint width direction by the side guide rails of the side support beams, and the side support beams rotate sideways. It has a structure in which the rollers are relatively movable in the joint width direction by the middle guide rail of the middle support beam body. It is movable. More specifically, in this configuration, between the upper and lower guide portions that constitute the side guide rail, the middle rotation roller is fitted so as to be relatively movable, and between the upper and lower guide portions that constitute the middle guide rail, Since the side rotating rollers are fitted so as to be relatively movable, the fitting state between the rotating rollers and the guide rails can be maintained even in the event of an earthquake, and the rotating rollers and the guide rails can smoothly move relative to each other. Able to move stably. Therefore, according to the configuration of the present invention, the relative displacement of both buildings during an earthquake can be stably followed by the smooth expansion and contraction of the expansion and contraction support beams.

Furthermore, in the construction of the present invention, both ends of the expandable support beam are supported by the horizontal receiving edges of the connection base held on the side edges of both buildings, so that the expandable support beam can be used as a joint cover body. and the weight of people and objects moving on the joint cover can be stably supported, and the load due to the weight acts on the connecting portions between the both ends of the telescopic support beam and the pivoted support portion of the connecting base. can be suppressed. Therefore, in this configuration, the connection between the both end portions of the telescopic support beam and the pivotal connection support portion of the connection base can be made a relatively simple structure. can be reduced compared to

In addition, in the structure of the present invention, the middle support beam body may have a structure in which one middle rotation roller is provided on each of the left and right sides of the middle beam rod portion, or a plurality of middle rotation rollers are provided on each of the left and right sides. It may be a configuration provided with. For example, two rotating rollers may be arranged vertically side by side. In such a configuration, the upper rotating roller is fitted to the upper guide portion of the side guide rail, and the lower rotating roller is fitted to the lower guide portion of the side guide rail. As a result, it has substantially the same function as one medium rotation roller, and produces the same effects. Similarly, in the side support beam body, the number of side rotating rollers provided on the right and left sides of the side beam rod portion may be one or more.

Further, in the construction of the present invention, a plurality of link pieces are pivotally connected in a pantograph-like manner so as to be able to expand and contract in the width direction of the joint, and both ends are pivotally connected to respective connecting bases of both buildings. It is preferable to have a structure in which an elastic holder is provided, and each cover plate of the joint cover body is connected to the elastic holder. With such a configuration, when the two structures are relatively displaced in the joint width direction during an earthquake, the expansion/contraction retainer can follow by expanding and contracting, and when the two structures are relatively displaced in the joint longitudinal direction during an earthquake, the expansion/contraction holding is performed. A body can follow by relative rotation of each link piece. As a result, each cover plate connected to the extensible holder can slide following the relative displacement in the joint width direction and the longitudinal direction.

In the floor joint cover device of the present invention, as described above, the expansion/contraction support beams supporting the joint cover body can expand and contract smoothly and stably follow the relative displacement of the two structures during an earthquake. Furthermore, since both ends of the telescopic support beam are supported by the connecting bases held by both structures, the load applied to the telescopic support beam can be stably supported. As a result, the cost required for the connection structure between the both ends of the telescopic support beam and the pivotally connected support portion of the connection base can be reduced as compared with the above-described conventional configuration.

FIG. 2 is a longitudinal sectional view showing a construction state of the floor joint covering device 1; FIG. 2 is a plan view showing a construction state of the floor joint covering device 1; Fig. 2 is a perspective view showing a construction state of the floor joint covering device 1; 4 is a plan view showing a joint cover body 45 omitted; FIG. 4 is a perspective view showing a joint cover body 45 omitted; FIG. 3 is a plan view of an extensible holder 31. FIG. It is the (A) top view and (B) side view of the expansion-contraction support beam 51. FIG. 5 is an exploded perspective view of a telescopic support beam 51. FIG. 3A and 3B are a plan view and a side view of a middle support beam body 52 that constitutes the telescopic support beam 51. FIG. 4 is a front view of a middle support beam 52; FIG. 3A and 3B are a plan view and a side view of a side support beam body 53 that constitutes the telescopic support beam 51. FIG. 11. (A) A front view and (B) a cross-sectional view taken along line SS in FIG. 11 of the side support beam body 53. FIG. (A) A cross-sectional view along the TT line in FIG. 7, and (B) a cross-sectional view along the MM line in FIG. FIG. 10 is an explanatory view of the action of the floor joint covering device 1 when buildings 81 and 82 are relatively displaced in the approaching direction; FIG. 10 is an explanatory view of the operation of the floor joint covering device 1 when buildings 81 and 82 are relatively displaced in the left-right direction;

An embodiment according to the present invention will be described with reference to the accompanying drawings.
As shown in FIGS. 1 to 3, the floor joint covering device 1 is arranged in a joint 83 provided between adjacent buildings 81 and 82 to form a passage connecting the two buildings 81 and 82. . Each of the buildings 81 and 82 has a seismic isolation structure whose lower part is supported by a seismic isolation device (not shown) having a cushioning function. The joint 83 is formed with a predetermined width between the building 81 and the building 82 so as to absorb horizontal relative shaking between the building 81 and the building 82 during an earthquake. .

In this embodiment, the longitudinal direction of the joint 83 will be described as the horizontal direction of the floor joint covering device 1 . That is, the lateral direction in this embodiment corresponds to the joint longitudinal direction in the present invention. In the following description, the direction from the structures 81 and 82 to the joint 83 is defined as the inner direction, and the direction from the joint 83 to the structures 81 and 82 is defined as the outer direction.

The connecting bases 2, 2 constituting the floor joint covering device 1 are arranged on the side edge of the floor 85 of the building 81 and the side edge of the floor 86 of the building 82 in a facing manner along the longitudinal direction of the joint 83. disposed and secured to each side edge. At the side edges of the floors 85 and 86 of the buildings 81 and 82, support step edges 91 and 92 recessed to a predetermined depth are provided. 2, 2 are provided. The connection base 2 has a flat plate-like horizontal receiving edge 21 covering the upper surfaces of the supporting stepped edges 91 and 92, and a vertical edge 22 standing upright from the outer end of the horizontal receiving edge 21 in the left-right direction. Furthermore, the inner edge 23 extending downward along the wall surfaces of the structures 81 and 82 constituting the joint 83 is continuously connected to the inner end of the horizontal receiving edge 21 . The joint width on the passage connecting the two buildings 81, 82 is defined by the inner edges 23, 23 of the connecting bases 2, 2 provided. In this embodiment, the horizontal receiving edge 21, the vertical edge 22, and the inner edge 23, which constitute the connecting base 2, are formed by bending a steel plate such as stainless steel. etc., to the floors 85, 86 of the buildings 81, 82.

As shown in FIG. 4, on the horizontal receiving edges 21, 21 of both buildings 81, 82, cylindrical connecting rods 25, 25 are erected in a facing manner near the respective vertical edges 22, 22, A plurality of the pair of connecting rods 25, 25 are provided at predetermined intervals in the left-right direction. Here, in this embodiment, the six pairs of connecting rods 25, 25 are arranged at positions symmetrical with respect to the center line in the left-right direction. In this embodiment, the connecting rod 25 is composed of a bolt fixed to the horizontal receiving edge 21 and protruding upward from the horizontal receiving edge 21, and a cylinder fitted around the bolt. It is

As shown in FIGS. 4 and 5, of the pair of connecting rods 25, 25 provided facing each other on both buildings 81, 82, the second pair of connecting rods 25, 25 from the right end and the second pair from the left end. The second pair of connecting rods 25, 25 is connected to an extensible holding body 31, which is formed by pivotally connecting a plurality of link pieces 33a, 33b in a pantograph-like manner. As shown in FIG. 6, the extensible holder 31 has a configuration in which a plurality of X-shaped link elements 32, which pivotally connect two link pieces 33a and 33b, are connected. Here, the link element portion 32 is formed by rotatably connecting link pieces 33a and 33b that intersect each other at their central portions. The ends of 33a and 33b are rotatably connected to each other to form a telescopic holder 31. As shown in FIG. Furthermore, mounting portions 36, 36 connected to the pair of connecting rods 25, 25 are pivotally connected to the link element portions 32, 32 at both ends via short link pieces 34a, 34b, respectively. The short link pieces 34a, 34b are approximately half the length of the link pieces 33a, 33b constituting the link element portion 32, one end of each of which is pivotally connected to the mounting portion 36, and the other end of each of which is connected to the link. The link pieces 33a and 33b of the element portion 32 are pivotally connected to respective ends. The mounting portion 36 has a connecting hole 37 having a diameter larger than the outer diameter of the connecting rod 25 and is formed through the connecting hole 37 in the vertical direction. . As a result, the mounting portion 36 can rotate in the horizontal direction and tilt in the vertical direction with respect to the connecting rod 25 .

When the structures 81 and 82 are displaced relative to each other in the joint width direction, the expansion/contraction holder 31 arranged in this manner can expand and contract following the relative displacement (see FIG. 14). When the two structures 81 and 82 are displaced relative to each other in the longitudinal direction of the joint, they can rotate in the horizontal direction following the relative displacement (see FIG. 15). Furthermore, when the two buildings 81, 81 are relatively displaced in the height direction, they can be tilted in the vertical direction following the relative displacement.

In addition, a plurality of support rods 41 extending in the left-right direction span across the left and right telescopic holders 31, 31, and each support rod 41 constitutes each of the telescopic holders 31, 31. It is pivotally connected to the link element portions 32,32. The support rod 41 of this embodiment is made of a steel material having a substantially U-shaped cross section, and is pivotally connected to the central portion of the link pieces 33a and 33b that constitute the respective link element portions 32 of the left and right telescopic holders 31 and 31. They are rotatably pivoted to each other. Here, in this embodiment, since the telescopic holder 31 is composed of eleven link element portions 32, the eleven support rods 41 pivotally connected to each link element portion 32 are connected to joints. They are arranged at intervals in the width direction.

As shown in FIGS. 1 to 3, rectangular flat cover plates 42 and 43 extending in the left-right direction are fixed to each support rod 41, respectively. The cover plate 42 arranged at the central portion in the joint width direction has a rectangular shape wider than the other cover plates 43, and the width direction central portion thereof is attached to the support rod 41 positioned at the center in the joint width direction. is cemented. A cover plate 43 arranged closer to one building 81 than the central cover plate 42 is fixed to the support rod 41 so as to protrude from the support rod 41 to the one building 81 side. there is The central cover plate 42 is slidably placed on the side edge of the adjacent cover plate 43 at the side edge on one building 81 side. 43 is slidably placed on the side edge of the adjacent cover plate 43 at the side edge on the building 81 side. A cover plate 43 arranged closer to the other building 82 than the central cover plate 42 is fixed to the upper surface of the support rod 41 so as to protrude from the support rod 41 toward the other building 82 . It is The central cover plate 42 is slidably placed on the side edge of the adjacent cover plate 43 at the side edge on the other building 82 side. 43 is slidably placed on the side edge of the adjacent cover plate 43 at the side edge on the building 82 side. Rectangular plate-like cover plates 44, 44 are attached to the vertical edges 22, 22 of the connecting bases 2, 2 provided on both buildings 81, 82, respectively. The side edges of the cover plates 42, 42 located on the outermost side (the side of the buildings 81, 82) on the side of the buildings 81, 82 are the side edges of the cover plates 44, 44 attached to the vertical edges 22, 22. It is slidably mounted on it. The plurality of cover plates 42 to 44 constitute a joint cover body 45 according to the present invention, and the joint cover body 45 constitutes the passage extending between the structures 81 and 82 .

In the structure in which each of the support rods 41 and the cover plates 42 and 43 are connected to the extensible support 31, when the structures 81 and 82 are displaced relative to each other in the joint width direction, the extensible support 31 expands and contracts. , the support rods 41 move relatively in the approaching direction and the separating direction, and the cover plates 42 and 43 slide in the joint width direction. As a result, the joint cover body 45 expands and contracts in the joint width direction (see FIG. 14). On the other hand, when both structures 81 and 82 are displaced relative to each other in the joint longitudinal direction, the expansion/contraction holder 31 tilts in the joint width direction. and relatively move in the horizontal direction (longitudinal direction of the joint). As a result, the joint cover body 45 tilts in the joint longitudinal direction (see FIG. 15).

On the other hand, among a plurality of pairs of connecting rods 25, 25 provided facing each other on both buildings 81, 82, the extensible holder 31 is not pivotally connected to a plurality of pairs of connecting rods 25, 25. As shown in FIGS. 4 and 5, each of them is pivotally connected with an expandable support beam 51 that can expand and contract in the width direction of the joint. Each of the support rods 41 is placed on and supported by these expandable support beams 51 . As shown in FIG. 7, the telescopic support beam 51 comprises a pair of side support beams 53, 53 pivotally connected to the connecting rods 25, 25 of the two buildings 81, 82, and the side support beams 53, 53 It is composed of a middle support beam body 52 supported by.

As shown in FIGS. 9 and 10, the middle support beam body 52 includes a middle beam rod portion 61 having vertical side portions extending along the joint width direction on both left and right sides. At one end, a middle roller unit 63 having four middle rotating rollers 64 is provided on one left and right side surface, and at the other end of the middle beam rod portion 61, the other left and right sides are provided. A middle roller unit 63 is provided on the side surface. The middle roller unit 63 has four rotating shafts 65 that are perpendicularly attached to the side surface of the middle beam rod portion 61 and are arranged in parallel in the vertical direction and the joint width direction. Rollers 64 are rotatably connected to each other. A fitting circumferential groove 64a is formed on the outer peripheral surface of the middle rotating roller 64 .

Furthermore, the middle support beam body 52 has middle guide rails 66 each having a pair of upper and lower guide portions 67 and 68 fixed to both left and right sides of the middle beam rod portion 61 . The guide portions 67 and 68 are horizontal edges 67a and 68a that extend left and right from the upper and lower ends of the center beam rod portion 61, respectively, and extend downward or upward from the extending ends of the horizontal edges 67a and 68a. The fitting edges 67b and 68b form a substantially L-shaped cross section, and the fitting edges 67b and 68b face each other with a predetermined gap in the vertical direction. The middle guide rails 66 are provided along the longitudinal direction (joint width direction) of the middle beam rod portion 61 . In the middle guide rail 66 of this embodiment, an upper guide portion 67 is provided above the middle roller unit 63 and a lower guide portion 68 is provided below the middle roller unit 63. , the middle roller unit 63 is positioned between the upper and lower fitting edges 67b and 68b.

As shown in FIGS. 11 and 12, the side support beam body 53 includes a side beam rod portion 71 having vertical side portions extending along the joint width direction on one left and right side. A beam mounting portion 72 pivotally connected to the connecting rod 25 is provided at one end of the side beam rod portion 71 , and two side surfaces of the side beam rod portion 71 are provided at the other end portion of the side beam rod portion 71 . A side roller unit 73 having four side rotating rollers 74 is provided. A connecting hole 72a having a diameter larger than the outer diameter of the connecting rod 25 is vertically formed through the beam mounting portion 72, and the connecting hole 72a is fitted onto the connecting rod 25. . As a result, the beam attachment portion 72 can rotate in the left-right direction and tilt in the up-down direction with respect to the connecting rod 25 .

The side roller unit 73 is provided with two rotating shafts 75 that are perpendicularly attached to the side surface of the side beam rod portion 71 and arranged side by side in the vertical direction. They are freely connected to each other. A fitting circumferential groove 74a is formed on the outer peripheral surface of the side rotating roller 74. As shown in FIG. In the side roller unit 73, the fitting edge 67b of the upper guide portion 67 constituting the middle guide rail 66 can be fitted to the fitting circumferential groove 74a of the upper side rotating roller 74 so as to be relatively movable. The fitting edge 68b of the guide portion 67 and the pair of lower guide portions 68 can be fitted into the fitting circumferential groove 74a of the side rotating roller 74 so as to be relatively movable.

Further, the side support beam body 53 has a side guide rail 76 having a pair of upper and lower guide portions 77 and 78 fixed to the side surface portion of the side beam rod portion 71 . The guide portions 77, 78 are composed of horizontal edges 77a, 78a extending leftward and rightward from the upper and lower portions of the side surfaces of the side beam rod portion 71, respectively, and extending downward or upward from the extending ends of the horizontal edges 77a, 78a. The fitting edges 77b and 78b are extended to form a substantially L-shaped cross section, and the fitting edges 77b and 78b are opposed to each other with a predetermined gap in the vertical direction. The side guide rail 76 extends along the longitudinal direction (joint width direction) of the side beam rod portion 71 except for the other end portion where the side roller unit 73 is attached to the side surface portion of the side beam rod portion 71 . are provided respectively. The side guide rail 76 of this embodiment is provided so as to be able to be inserted between the upper and lower guide portions 67, 68 (upper and lower fitting edges 67b, 68b) constituting the inner guide rail 66 of the inner support beam 52. The fitting edge 77b of the upper guide portion 77 is moved relative to the fitting circumferential grooves 64a, 64a of the two upper rotating rollers 64, 64 constituting the middle roller unit 63 of the middle support beam 52. In addition, the fitting edge 78b of the lower guide portion 78 can be moved relatively to the fitting circumferential grooves 64a, 64a of the two lower rotating rollers 64, 64 of the middle roller unit 63. Can be mated.

Further, in this embodiment, the side support beam 53 is provided with outer fitting pieces 79, 79 protruding from the upper and lower ends of the side beam rod portion 71 toward the side portions. The upper and lower outer fitting pieces 79, 79 are formed so that the middle guide rail 66 of the middle support beam body 52 can be inserted therebetween, and extend in the longitudinal direction (joint width direction) of the side beam rod portion 71. is provided. Horizontal edges 67a and 68a of the upper and lower guide portions 77 and 78 constituting the middle guide rail 66 are fitted between the upper and lower outer fitting pieces 79 and 79 so that the middle guide rail 66 is moved vertically. (See FIG. 13).

As shown in FIGS. 7 and 8, the telescopic support beam 51 is constructed by connecting the middle support beam 52 and the two side support beams 53, 53 described above. That is, on the left and right sides of the middle support beam 52, the side portions of the middle beam rod portion 61 constituting the middle support beam 52 and the side beam rod portions 71, 71 constituting the side support beams 53, 53 are arranged. are opposed to each other, the middle guide rail 66 of the middle support beam 52 and the side rotation roller 74 of the side support beam 53 are fitted together, and the middle rotation roller 64 of the middle support beam 52 and the side rotation roller 74 are fitted. The side guide rail 76 of the side support beam 53 is fitted. In this way, the telescopic support beam 51 is constructed by connecting the middle support beam 52 and the two side support beams 53, 53, and the telescopic support beam 51 has the respective side support beams 53, 53 connected to both buildings. 81, 82 are pivotally connected to the connecting bases 2, 2 and supported by being mounted on the horizontal receiving edges 21, 21 of the connecting bases 2, 2 (see FIGS. 1 and 5). As shown in FIG. 13, the telescopic support beam 51 has upper and lower side rotating rollers 74 and 74 of the side roller unit 73 fitted between upper and lower guide portions 67 and 68 of the middle guide rail 66 so as to be relatively movable. In addition, since the upper and lower middle rotating rollers 64 and 64 of the middle roller unit 63 are fitted between the upper and lower guide portions 77 and 78 of the side guide rail 76 so as to be able to move relative to each other, the middle support beam body 52 and the side support beam 52 can be moved. The support beams 53, 53 move relatively along the respective guide rails 66, 76, allowing smooth expansion and contraction.

As shown in FIGS. 4 and 5, the telescopic support beam 51 is configured such that the beam mounting portions 72, 72 of the side support beam bodies 53, 53 are pivotally connected to the connecting bases 2, 2 of the two buildings 81, 82, and are horizontally movable. rotatably and vertically tiltable. Since the side support beams 53, 53 are slidably mounted on the horizontal receiving edges 21, 21 of the connection bases 2, 2, the side support beams 53, 53 support the middle support beams. 52 is stably supported. A plurality of support rods 41 connected to the expandable support 31 and fixed to the cover plates 42, 43 are connected to the expandable support beams 51 across the joint 83 between the two structures 81,82. are slidably mounted to constitute the floor joint covering device 1 of this embodiment. In this floor joint cover device 1 , the cover plates 42 and 43 are supported via the support rods 41 by a plurality of expandable support beams 51 spanning between the joints 83 .

Next, the operating mode of the floor joint covering device 1 of this embodiment will be described.
As shown in FIG. 14, when the two buildings 81 and 82 are relatively displaced in the direction of approaching each other during an earthquake, each telescopic support beam 51 is positioned so that the side support beams 53 and 53 are the center support beam 52 and the side support beams 53 and 53 are the center support beams 52 . They move relative to each other inland and contract. By contracting the expandable holders 31, the support rods 41 are brought closer to each other, and the cover plates 42 and 43 are moved inwardly of the joint, and the joint cover body 45 is contracted. Here, since the telescopic support beam 51 and the telescopic support 31 can be expanded and contracted smoothly, it is possible to smoothly follow the relative displacement of the buildings 81 and 82 in the approaching direction due to the earthquake. In this way, the cover plates 42 and 43 supported by the telescopic support beams 51 slide in conjunction with the telescopic holder 31 to follow the relative displacement of the structures 81 and 82 in the approaching direction. The joint cover body 45 can be contracted smoothly.

In addition, when the two structures 81 and 82 are relatively displaced in the direction of separation during an earthquake (not shown), each telescopic support beam 51 moves the side support beams 53 and 53 with respect to the middle support beam 52. It expands due to relative movement to the outside of the joint. The extension of each telescopic holder 31 separates the support rods 41 from each other, thereby moving the cover plates 42 and 43 to the outside of the joint and extending the joint cover 45 . Even when there is relative displacement in the separation direction in this way, the telescopic support beam 51 and the telescopic holder 31 are smoothly extended and can follow the relative displacement smoothly. The joint cover body 45 can be smoothly extended by sliding the cover plates 42 and 43 following the relative displacement in the separation direction.

On the other hand, as shown in FIG. 15, when both buildings 81 and 82 are relatively displaced in the horizontal direction (joint longitudinal direction) during an earthquake, each telescopic support beam 51 tilts in the joint width direction. Along with the tilting, the side support beams 53, 53 relatively move toward both ends and extend. Each telescopic holder 31 tilts in the left-right direction and expands along with the tilting. Here, each telescopic support beam 51 and each telescopic support 31 can be smoothly extended and retracted, and can be rotated around the connecting bases 2, 2 (paired connecting rods 25, 25) fixed to both buildings 81, 82. Since they are movably pivoted, they can smoothly follow the relative displacement of the two buildings 81 and 82 in the horizontal direction due to an earthquake. By tilting the telescopic holder 31 in the left-right direction, the support rods 41 are displaced in the left-right direction, the cover plates 42 and 43 move in the left-right direction, and the joint cover body 45 tilts. . Since the cover plates 42 and 43 slide in conjunction with the telescopic holder 31 in this manner, the joint cover body 45 can smoothly tilt following the relative displacement in the lateral direction of the two structures 81 and 82. can.

Furthermore, when the structures 81 and 82 are relatively displaced in the vertical direction during an earthquake, each telescopic support beam 51 and each telescopic support 31 tilts and expands in the vertical direction. Then, the joint cover body 45 expands with the expansion of each expansion/contraction holding body 31 . Here, both ends of the telescopic support beam 51 and the telescopic holder 31 are vertically tiltable on the connecting bases 2, 2 (paired connecting rods 25, 25) fixed to the two buildings 81, 82. , the vertical relative displacement of both structures 81 and 82 can be smoothly followed. The cover plates 42 and 43 slide following the relative displacement in the vertical direction, so that the joint cover body 45 can be extended smoothly.

As described above, in the floor joint covering device 1 of this embodiment, when the structures 81 and 82 are displaced relative to each other during an earthquake, the telescopic support beams 51 supporting the cover plates 42 and 43 are displaced. It can operate following relative displacement. Here, in the telescopic support beam 51 of this embodiment, the middle rotation roller 64 of the middle support beam 52 and the side guide rail 76 of the side support beam 53 are fitted so as to be relatively movable, and the middle support beam 52 Since the middle guide rail 66 and the side rotation roller 74 of the side support beam 53 are fitted so as to be relatively movable, the middle support beam 52 and the side support beams 53, 53 By relatively moving along each of the guide rails 66, 76, the expansion and contraction operation can be performed smoothly. Further, in this embodiment, the upper and lower middle rotating rollers 64, 64 arranged on the middle support beam 52 are arranged on the upper and lower guide portions 77 of the side guide rails 76 arranged on the side support beam 53. , 78 so as to be able to move relative to each other. Since the guide portions 67 and 68 are fitted so as to be able to move relative to each other, the fitting state is stably maintained in the event of an earthquake, and the expansion and contraction operations can be performed stably and smoothly. For this reason, the expandable support beam 51 of the present embodiment smoothly expands and contracts according to the relative displacement of the two structures 81 and 82, and can stably follow the relative displacement.

In addition, in the configuration of this embodiment, the side support beam bodies 53, 53 of the telescopic support beam 51 are supported by the horizontal receiving edges 21, 21 fixed to both structures 81, 82, and the side support beam bodies 53, 53 are Since the middle support beam 52 is supported by 53, the middle support beam 52 arranged on the joint 83 can be stably supported. Further, the side support beams 53 support the middle support beams 52 from above and below with the outer fitting pieces 79 , 79 . For this reason, the telescopic support beam 51 has the inner support beam 52 firmly supported on the joint 83, and the load acting on the connecting portions between the side support beams 53, 53 and the connection bases 2, 2 is reduced. Since the load can be reduced, high strength and rigidity that can stably support the load of people and objects passing over the joint cover body 45 can be exhibited.
Here, in the configuration of the present embodiment, since the telescopic support beam 51 is supported by the horizontal receiving edges 21, 21, the portions (connecting to the beam mounting portions 72) that pivotally connect both ends of the telescopic support beam 51 It is possible to prevent the load from acting on the portion where the rod 25 is pivotally connected. As a result, a relatively simple pivoting structure is used in which the connecting holes 72a of the beam mounting portions 72 of the telescopic support beams 51 are fitted onto the connecting rods 25 provided on the side edges of the two structures 81 and 82. there is Therefore, the configuration of this embodiment can reduce the cost required for manufacturing and construction as compared with the above-described conventional configuration.

In the floor joint cover device 1 of this embodiment, the telescopic support beam 51 that supports the joint cover body 45 and the cover plates 42 and 43 of the joint cover body 45 slide according to the relative displacement of the structures 81 and 82 . It is a configuration in which the extensible holding body 31 to be moved is provided as a separate member. Accordingly, as described above, the load acting on the joint cover body 45 can be stably supported by the expansion/contraction support beams 51, and the expansion/contraction and tilting of the joint cover body 45 by the expansion/contraction holding body 31 can be performed smoothly. . Therefore, the relative displacement of the two structures 81 and 82 can be followed extremely well during an earthquake.

The present invention is not limited to the above-described embodiments, and can be modified as appropriate without departing from the scope of the present invention.
For example, the number of telescopic support beams 51 and the number of telescopic holders 31 can be appropriately changed and set. That is, it is preferable to appropriately change the settings according to the installation location of the floor joint covering device 1, the width of the passage, the weight of the joint covering body 45, and the like.

Further, in the above embodiment, the middle roller unit 63 having four middle rotation rollers 64 is disposed on the middle support beam body 52 of the telescopic support beam 51. However, the middle roller unit 63 is not limited to this. The number of medium rotation rollers included in the unit can be changed as appropriate. For example, a configuration including a middle roller unit having two middle rotation rollers 64, 64 arranged vertically may be used. Furthermore, a configuration in which one middle rotation roller is provided on each side of the middle support beam 52 may be employed.
Similarly, the side roller unit 73 having two side rotating rollers 74 is arranged on the side support beam 53, but this is not restrictive, and the number of side rotating rollers may be changed as appropriate. can be done. For example, a configuration in which a side roller unit having four side rotation rollers is provided, a configuration in which one side rotation roller is provided, or the like can be employed.

In the above-described embodiment, the telescopic support beam 51 is directly placed on the horizontal receiving edge 21 of the connecting base 2. It is good also as the structure which mounted the expansion-contraction support beam 51 slidably on the top. Here, as the receiving member, a rod-shaped member extending in the left-right direction is preferably used, and by inserting the receiving member, the vertical position of the joint cover can be adjusted.

1 floor joint cover device 2 connecting base 21 horizontal receiving edge 22 vertical edge 23 inner edge 25 connecting rod 31 telescopic holder 32 link element portion 33a, 33b link piece 34a, 34b short link piece 36 mounting portion 37 connecting hole 41 support rod 42, 43, 44 cover plate 45 joint cover body 51 telescopic support beam 52 middle support beam body 53 side support beam body 61 middle beam rod portion 63 middle rotor unit 64 middle rotation roller 64a fitting circumferential groove 65 rotating shaft 66 middle guide Rails 67, 68 Guide portions 67a, 68a Horizontal edges 67b, 68b Fitting edge 71 Side beam rod portion 72 Beam mounting portion 72a Connecting hole 73 Side roller unit 74 Side rotating roller 74a Fitting circumferential groove 75 Rotating shaft 76 Side guide rail 77, 78 guide part 77a, 78a horizontal edge 77b, 78b fitting edge 79 outer fitting piece part 81, 82 building 83 joint 85, 86 floor 91, 92 support step edge

Claims (1)

connecting bases respectively held on side edges of adjacent buildings via joints;
a joint cover body comprising a plurality of cover plates arranged side by side in the joint width direction, the cover plates being relatively slidable in the joint width direction and the joint longitudinal direction;
A floor joint cover device comprising: an expansion and contraction support beam provided so as to be expandable in the joint width direction, both ends of which are pivotally connected to respective connection bases of both buildings, and which supports the joint cover body from below ,
The connecting base is
a horizontal receiving edge provided at a side edge of the building and slidably supporting at least an end portion of the telescopic support beam;
a pivotal support portion erected on the horizontal receiving edge and to which the end portion of the telescopic support beam is connected so as to be able to tilt in the lateral direction and the vertical direction;
The elastic support beam is
a middle support beam disposed along the joint width direction;
One end is pivotally connected to the pivotal support portions of both buildings, and the other end is connected to both left and right sides of the middle support beam body so as to be relatively slidable in the joint width direction. and a pair of left and right side support beams for supporting the support beams,
The middle support beam body is
a center beam rod portion along the joint width direction;
Left and right intermediate rotating rollers rotatably connected to rotating shafts projecting from the center beam rod portion to both left and right sides, respectively;
A middle guide rail composed of a pair of upper and lower guide portions extending along the joint width direction with a gap in the vertical direction, and arranged on both left and right sides of the middle beam rod portion,
The side support beams are
a side beam rod part along the joint width direction, one end of which is pivotally connected to the pivotal support part of the connection base;
It is rotatably connected to a rotating shaft projecting from the side beam rod portion to one of the left and right sides, and is fitted between the upper and lower guide portions constituting the middle guide rail so as to be relatively movable in the joint width direction. a side rotating roller to be joined,
A pair of upper and lower guide portions arranged on the same left and right side of the side beam rod portion as the side rotating roller and extending along the joint width direction with a gap in the vertical direction. A joint cover device for floors, comprising a side guide rail in which the intermediate rotation roller is fitted between the parts so as to be relatively movable in the joint width direction.

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