Expansion Joint Cover

Abstract

To provide an expansion joint cover capable of preventing a bolt from being broken even when a vehicle is suddenly braked or stopped.SOLUTION: A joint cover 1 comprises: a first angle anchor 21 and a second angle anchor 22 provided in neighboring skeletons 100; a first receiving frame 31 and a second receiving frame 32 provided on an upper face of each angle anchor 21, 22; a lid 13 which is provided across the first receiving frame 31 and the second receiving frame 32, which has a recess having a spherical seat portion 51c at the first receiving frame 31 side, and a part of whose lower face at the second receiving frame 32 side is supported by the second receiving frame 32; a bolt 61 which is in contact with a lower face of the first angle anchor 21, which is inserted into the first angle anchor 21, the first receiving frame 31, and the lid 13, and whose tip is stored in the recess; a nut 63 screwed with the bolt 61; and a disc spring 64 provided in the bolt 61, disposed between the seat portion 51c and the nut 63, and being in contact with the seat portion 51c.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to an expansion joint cover used in a driveway of a building. [Background technology]

[0002] In buildings such as shopping centers and buildings, roadways have been provided in multi-storey parking lots, underground parking lots, and places where emergency vehicles pass through. Such buildings are composed of multiple structures. Clearances are provided between adjacent structures. For this reason, expansion joint covers are used to cover the clearances on the roadways.

[0003] Such an expansion joint cover is constructed, for example, by providing frames fixed to adjacent frames with anchors, placing a lid on the frames, and fastening the lid to the frame provided on one of the frames with bolts. For this reason, the frames and the lid are set to materials and shapes that can withstand loads that take into account the weight and running of the vehicle. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3154999 Summary of the Invention [Problem to be solved by the invention]

[0005] The above-mentioned expansion joint cover is designed with materials and shapes assuming a vehicle traveling on a road. However, when a vehicle actually travels on a road, it may suddenly brake (suddenly accelerate) or stop on the expansion joint cover. When such a sudden stop or acceleration of the vehicle occurs, a load higher than the load considering the weight, traveling, etc. of the vehicle is applied to the expansion joint cover.

[0006] Such loads are applied to the lid and the receiving frame of the expansion joint cover. For example, when the load is applied to the lid, the lid moves in the direction of gravity or in the horizontal direction, and the load is applied to the bolts that secure the lid. Therefore, when an excessive load is applied to the lid due to sudden braking or stopping of the vehicle, the lid and the receiving frame can withstand the load, but the bolts that secure the lid and the receiving frame may break.

[0007] If the bolt breaks, the lid may move further than normal or flap around. If it does move, it may collide with the frame, generating noise.

[0008] For example, it is possible to provide a cushioning material made of rubber or the like to prevent the lid from moving, but there is a risk that the cushioning material will be damaged by repeated application of load or by aging. Furthermore, if the cushioning material is damaged, it may be exposed on the roadway, which will mar the appearance of the building.

[0009] Therefore, an object of the present invention is to provide an expansion joint cover that can prevent damage to the bolts even when the vehicle is suddenly braked or stopped. [Means for solving the problem]

[0010] According to one aspect of the present invention, an expansion joint cover is provided in a clearance between a plurality of frames constituting a roadway, and includes a first angle anchor provided on the frame, a second angle anchor provided on the frame adjacent to the frame on which the first angle anchor is provided, across the clearance, a first receiving frame provided on an upper surface of the first angle anchor, a second receiving frame fixed to an upper surface of the second angle anchor, and a support frame extending between the first receiving frame and the second receiving frame. a lid having a recess with a seat having a spherical seating surface on the first receiving frame side and a portion of its underside on the second receiving frame side supported by the second receiving frame; a bolt having a head that abuts against the underside of the first angle anchor, the first receiving frame and the seat, the bolt being inserted through the first angle anchor, the first receiving frame and the seat and having a tip housed in the recess; a nut that is housed in the recess and screwed onto the bolt; and a disc spring that is housed in the recess, is provided on the bolt, is positioned between the seat and the nut and abuts against the seat. Effect of the Invention

[0011] The present invention can provide an expansion joint cover that can prevent damage to the bolt even when the vehicle is suddenly braked or stopped. [Brief description of the drawings]

[0012] [Figure 1] FIG. 2 is a plan view showing the configuration of an expansion joint cover according to one embodiment of the present invention. [Diagram 2] FIG. 4 is a cross-sectional view showing the configuration of the expansion joint cover. [Diagram 3] 4 is a cross-sectional view showing the configuration of the angle anchor, receiving frame member, and cover of the expansion joint cover. FIG. [Figure 4] FIG. 4 is a plan view showing the configuration of the angle anchor and the receiving frame member, illustrating one step of installation. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7] FIG. [Figure 8] FIG. [Figure 9] FIG. 11 is an explanatory diagram showing an example of use of the receiving frame member and the lid. [Figure 10] FIG. 13 is an explanatory diagram showing an example of the state of an expansion joint cover in relation to the relative positions of adjacent bodies. [Figure 11] 4 is a flow chart showing an example of a method for installing an expansion joint cover. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, the configuration of an expansion joint cover 1 according to one embodiment of the present invention will be described with reference to Figs.

[0014] FIG. 1 is a plan view showing the configuration of an expansion joint cover 1 according to one embodiment of the present invention installed between adjacent bodies 100, and FIG. 2 is a cross-sectional view showing the configuration of the expansion joint cover 1 installed between adjacent bodies 100.

[0015] Fig. 3 is a cross-sectional view showing the configuration of the angle anchor 11, the receiving frame member 12, and the lid 13 of the expansion joint cover 1, and Fig. 4 is a plan view showing the configuration of the angle anchor 11 and the receiving frame member 12, and one step of installation on adjacent bodies 100. Fig. 5 is a plan view showing the configuration of the lid body 41 of the lid 13, and Fig. 6 is a bottom view showing the configuration of the lid body 41. Fig. 7 is an enlarged plan view showing the fastening member attachment portion 51 and the third protrusion portion 54 provided on the upper surface of the lid body 41.

[0016] Fig. 8 is an explanatory diagram showing an example of use of the screw handle 44 for lifting the lid body 41 as an example of use of the lid body 41, and Fig. 9 is an explanatory diagram showing an example of adjusting the dimension in the width direction as an example of use of the receiving frame member 12 and the lid 13. Fig. 10 is an explanatory diagram showing an example of the state of the expansion joint cover 1 when the relative position of the adjacent frames 100 changes.

[0017] As shown in Figs. 1 and 2, an expansion joint cover 1 is provided across adjacent bodies 100 among a plurality of bodies 100 that form a roadway.

[0018] A plurality of skeletons 100 are provided to form a roadway in a building. For example, as shown in Fig. 2, adjacent skeletons 100 are arranged with a clearance 200 set in advance to a predetermined width between them. As shown in Figs. 1 and 2, adjacent skeletons 100 have mounting portions 110, which are recesses for installing expansion joint covers 1, at the corners.

[0019] 1 to 4, the expansion joint cover 1 includes a plurality of angle anchors 11, a plurality of receiving frame members 12, a plurality of covers 13, and a plurality of fastening members 14. The expansion joint cover 1 is provided across adjacent bodies 100, thereby covering a clearance 200 on the roadway that occurs between the adjacent bodies 100. The expansion joint cover 1 constitutes a part of the roadway.

[0020] For example, in the expansion joint cover 1, the receiving frame member 12 is fixed to the mounting portion 110 of the body 100 by the angle anchor 11. In the expansion joint cover 1, a plurality of receiving frame members 12 are provided in the width direction perpendicular to the facing direction of the adjacent bodies 100, and the lid 13 is fixed to each receiving frame member 12 by a plurality of fastening members 14.

[0021] In addition, each component of the expansion joint cover 1 is designed to be capable of withstanding a T-25 load (wheel load of 14,280 kgf: maximum automobile load).

[0022] 1 to 4, the angle anchor 11 includes a plurality of first angle anchors 21 and a plurality of second angle anchors 22. The angle anchor 11 is fixed to a mounting portion 110 of a frame 100, and fixes a receiving frame member 12 thereto.

[0023] 3 and 4, the angle anchor 11 has a plurality of connecting frames 23 that connect each set of the first angle anchor 21 and the second angle anchor 22 when the frame 100 is installed. In this embodiment, the angle anchor 11 constituting one receiving frame member 12 has three sets of the first angle anchor 21, the second angle anchor 22, and the connecting frames 23.

[0024] For example, the first angle anchor 21, the second angle anchor 22, and the connection frame 23 are cast articles formed by casting. For example, the first angle anchor 21, the second angle anchor 22, and the connection frame 23 are formed from FCD500.

[0025] After the angle anchor 11 is attached to the mounting portion 110, a building material 111 such as mortar is poured into the angle anchor 11, so that at least a portion of the angle anchor 11 is embedded in the building material 111. Here, the building material 111 is poured for the purposes of fixing the angle anchor 11 and the receiving frame member 12 to the mounting portion 110 and paving the area around the receiving frame member 12.

[0026] The first angle anchor 21 comprises a first anchor bolt 24 fixed to the main body 100, a first frame 25 fixing the first receiving frame 31, and a first connecting member 26 welded to the first anchor bolt 24 and the first frame 25.

[0027] The first anchor bolt 24 is inserted into the body 100 from the upper surface of the mounting portion 110 of the body 100 and fixed to the body 100. The first anchor bolt 24 has a sleeve that expands by tightening a nut or by hitting the anchor head. The first anchor bolt 24 is, for example, inserted into a hole drilled in the mounting portion 110 of the body 100, and then fixed to the body 100 by tightening the nut to a specified torque value or by hitting the anchor head, causing the sleeve arranged inside the hole of the mounting portion 110 to expand.

[0028] The first frame 25 is an angle that is long in one direction and has an L-shaped cross section. The first frame 25 is fixed to the mounting part 110 with its longitudinal direction aligned with the opposing direction of the adjacent bodies 100. The first frame 25 is formed, for example, by bending a flat plate material at the center in the short side direction along the longitudinal direction.

[0029] The first frame 25 has a surface direction along the longitudinal direction and two perpendicular wall portions 25a. The first frame 25 also has an end wall 25b at one end, the surface direction of which is perpendicular to the longitudinal direction and in which a screw hole is formed. The end wall 25b may be formed by bending a part of the first frame 25, or may be integrally formed by welding an L-shaped angle to the first frame 25.

[0030] One of the two wall portions 25a is disposed along the direction of gravity, and the first frame 25 is fixed to the attachment portion 110 in a position in which the other wall portion 25a is disposed on the upper end side of the one wall portion 25a. The other wall portion 25a disposed above has a hole portion for inserting the fastening member 14 therethrough.

[0031] For example, a plurality of first frames 25, three first frames 25 in this embodiment, are provided for one first receiving frame 31 (described later) of the receiving frame member 12. Note that it is preferable that three or more first frames 25 are provided.

[0032] 1, when the first frames 25 supporting the widthwise end sides of the first receiving frames 31 (described later) of the adjacent receiving frame members 12 are arranged adjacent to each other, for example, the wall portion 25a arranged along the gravity direction of the first frame 25 is arranged on the opposite side to the side adjacent to the first frame 25. This is to prevent the first connecting member 26 and the first anchor bolt 24 fixed to the wall portion 25a arranged along the gravity direction of the first frame 25 from interfering with the adjacent first frame 25.

[0033] The first connecting member 26 is made of steel. The first connecting member 26 is formed by bending a round bar into an L-shape, etc. One end of the first connecting member 26 is arranged along the direction of gravity, with a bent portion sandwiched between the first connecting member 26, and the other end is higher than the one end and extends in the arrangement direction of the multiple first frames 25.

[0034] One end of the first connecting member 26 is oriented along the axial direction of the first anchor bolt 24, and one end is welded to the first anchor bolt 24. As a specific example, the first connecting member 26 has the first anchor bolt 24 welded to the outer peripheral surface on the outside in the opposing direction of the adjacent bodies 100.

[0035] The other end of the first connecting member 26 is welded to the outer surface of the wall portion 25a arranged to extend in the gravity direction of the multiple first frames 25. In this manner, the first connecting member 26 is welded to the first anchor bolt 24 and one of the walls 25a of the first frame 25, and fixed thereto.

[0036] The numbers of the first anchor bolts 24 and the first connecting members 26 can be set appropriately. As shown in Fig. 4, in this embodiment, an example will be described in which one first anchor bolt 24 and one first connecting member 26 are provided for one first frame 25.

[0037] As shown in Figures 1 and 2, such a first angle anchor 21, for example, has a first frame 25 supported by a first anchor bolt 24 via a first connecting member 26, and is positioned away from the side and bottom surfaces of the mounting portion 110.

[0038] The second angle anchor 22 comprises a second anchor bolt 27 fixed to a structure 100 adjacent to the structure 100 to which the first angle anchor 21 is fixed, a second frame 28 fixing the second receiving frame 32, and a second connecting member 29 welded to the second anchor bolt 27 and the second frame 28.

[0039] The second anchor bolt 27 is inserted into the body 100 from the upper surface of the mounting portion 110 of the body 100 and fixed to the body 100. The second anchor bolt 27 has a sleeve that expands by tightening a nut or by hitting the anchor head. The second anchor bolt 27 is inserted, for example, into a hole drilled in the mounting portion 110 of the body 100, and the sleeve arranged inside the hole of the mounting portion 110 expands by tightening the nut to a specified torque value or by hitting the anchor head, and the second anchor bolt 27 is fixed to the body 100. For example, the second anchor bolt 27 has the same configuration as the first anchor bolt 24, but may have a different configuration.

[0040] The second frame 28 is an angle that is long in one direction and has an L-shaped cross section. For example, the second frame 28 is set to be longer than the first frame 25. The second frame 28 is fixed to the mounting portion 110 with its longitudinal direction aligned with the opposing direction of the adjacent bodies 100. The second frame 28 is formed, for example, by bending a flat plate material along the longitudinal direction at the center in the short side direction.

[0041] The second frame 28 has a surface direction along the longitudinal direction and two perpendicular wall portions 28a. The second frame 28 also has an end wall 28b at one end, the surface direction of which is perpendicular to the longitudinal direction and in which a screw hole is provided. The end wall 28b may be formed by bending a part of the second frame 28, or may be integrally formed by welding an L-shaped angle to the second frame 28.

[0042] One of the two wall portions 28a is disposed along the direction of gravity, and the second frame 28 is fixed to the attachment portion 110 in a position in which the other wall portion 28a is disposed on the upper end side of the one wall portion 28a. The other wall portion 28a disposed above has a plurality of holes in the longitudinal direction of the second frame 28 for inserting the fastening members 130 therethrough.

[0043] For example, a plurality of second frames 28, three second frames 28 in this embodiment, are provided for one second receiving frame 32 (described later) of the receiving frame member 12. It is preferable that three or more second frames 28 are provided.

[0044] 1, when second frames 28 supporting the widthwise end sides of second receiving frames 32 (described later) of adjacent receiving frame members 12 are arranged adjacent to each other, for example, wall portion 28a arranged along the gravity direction of second frame 28 is arranged on the opposite side to the side adjacent to second frame 28. This is to prevent second connecting member 29 and second anchor bolt 27 fixed to wall portion 28a arranged along the gravity direction of second frame 28 from interfering with adjacent second frame 28.

[0045] The second connecting member 29 is made of steel. The second connecting member 29 is configured by bending a round bar into an L-shape, etc. One end of the second connecting member 29 is disposed along the direction of gravity, sandwiching a bent portion, and the other end is disposed above the one end and extends in the arrangement direction of the multiple second frames 28.

[0046] One end of the second connecting member 29 is welded to the second anchor bolt 27 with the one end side aligned along the axial direction of the second anchor bolt 27. As a specific example, the second anchor bolt 27 is welded to the outer peripheral surface of the second connecting member 29 in the opposing direction of the adjacent bodies 100.

[0047] The other end of the second connecting member 29 is welded to the outer surface of the wall portion 28a arranged to extend in the gravity direction of the multiple second frames 28. In this manner, the second connecting member 29 is welded to the second anchor bolt 27 and one of the wall portions 28a of the second frames 28, and fixed thereto.

[0048] The numbers of the second anchor bolts 27 and the second connecting members 29 can be set appropriately. As shown in Fig. 4, in this embodiment, an example will be described in which two second anchor bolts 27 and two second connecting members 29 are provided for one second frame 28.

[0049] As shown in Figures 1 and 2, such a second angle anchor 22 is, for example, supported by the first anchor bolt 24 via the second frame 28 and the first connecting member 26, and is positioned away from the side and bottom surfaces of the mounting portion 110.

[0050] The connecting frame 23 is connected to the end wall 25b of the first frame 25 and the end wall 28b of the second frame 28. The connecting frame 23 has end walls 23a at both ends that abut against the end wall 25b of the first frame 25 and the end wall 28b of the second frame 28 and are connected by bolts 120. The connecting frame 23 is a spacer that defines the distance between the first frame 25 and the second frame 28 by connecting the first frame 25 and the second frame 28.

[0051] When the angle anchor 11 is fixed to the mounting portion 110 of the adjacent body 100, the connecting frame 23 connects the first frame 25 and the second frame 28 with the bolts 120, and is detached from the first frame 25 and the second frame 28 after the first frame 25 and the second frame 28 are fixed to the mounting portion 110.

[0052] The frame member 12 is fixed to the angle anchor 11. As shown in Fig. 1 to Fig. 4, the frame member 12 includes a first frame 31 and a second frame 32. For example, the first frame 31 and the second frame 32 are cast articles formed by casting. For example, the first frame 31 and the second frame 32 are formed from FCD500.

[0053] The first receiving frame 31 is fixed to the upper surface of the first frame 25 of the first angle anchor 21 by the fastening members 14 together with a lid body 41 (described later) of the lid 13. The first receiving frame 31 has a width spanning a plurality of first frames 25, three first frames 25 in this embodiment. The first receiving frame 31 includes a base 31a that is long in the arrangement direction (width direction) of the three first frames 25, a wall portion 31b provided on the upper surface of the base 31a and extending along the longitudinal direction of the base 31a, and a recessed portion 31c provided on the base 31a and extending along the longitudinal direction of the base 31a.

[0054] The base 31a is formed in a flat plate shape that is long in one direction. The building material 111 is poured on one side of the base 31a with the wall portion 31b in between, and the lid 13 is placed on the other side. The base 31a has a recess or an opening formed in a part of its upper surface. The base 31a also has a plurality of holes through which the fastening members 14 are inserted.

[0055] The wall portion 31b protrudes upward from the base 31a. The wall portion 31b extends along the longitudinal direction of the base 31a. For example, one main surface of the wall portion 31b determines the position of the building material 111, such as mortar, on the recessed side of the base 31a when the building material 111 is poured. The other main surface of the wall portion 31b faces the lid body 41 of the lid 13 at a predetermined distance. The other main surface of the wall portion 31b does not come into contact with the lid body 41 when the lid body 41 rotates within an expected range, but comes into contact with the lid body 41 when the lid body 41 rotates within a range larger than the expected range, thereby restricting the rotation of the lid body 41.

[0056] The recess 31c is a depression formed along the longitudinal direction of the base 31a on the upper surface of the base 31a on which the lid body 41 is provided. The recess 31c is formed in a curved shape. A part of the lid body 41 abuts against the recess 31c. Specifically, the recess 31c is provided adjacent to the fastening member 14 that fixes the base 31a, on the opposite side to the second receiving frame 32 in the opposing direction of the adjacent bodies 100 of the fastening member 14.

[0057] The second receiving frame 32 is fixed to the upper surface of the second frame 28 of the second angle anchor 22 by a plurality of fastening members 130. The second receiving frame 32 has a width spanning the plurality of second frames 28, three second frames 28 in this embodiment. The second receiving frame 32 includes a base 32a that is long in the arrangement direction in which the three second frames 28 are arranged, a plurality of legs 32b that are provided below the base 32a and extend along the longitudinal direction of the base 31a, and a fastening portion 32c that is provided below the base 32a and to which the fastening members 130 are fastened.

[0058] The base 32a is formed in a flat plate shape that is long in one direction, and multiple openings 32d are formed. Building materials 111 are poured into the openings 32d and adjacent to the end of the base 32a on the opposite side to the first receiving frame 31 in the arrangement direction of the adjacent bodies 100. A second protrusion 53 (described later) that is a part of the lid body 41 abuts against the upper surface of the base 32a, supporting the lid body 41.

[0059] For example, the upper surface of the base 32a has a first surface 32a1 and a second surface 32a2 that are formed at two different inclination angles and extend in the longitudinal direction of the base 32a. The first surface 32a1 and the second surface 32a2 are aligned in a direction perpendicular to the longitudinal direction of the base 32a, i.e., in the opposing direction of the adjacent bodies 100.

[0060] For example, the first surface 32a1 is provided on the first receiving frame 31 side of the base 32a in the opposing direction of the adjacent bodies 100. The first surface 32a1 is, for example, a surface that follows the upper surface of the second frame 28 or is inclined upward with respect to the upper surface of the second frame 28 on the side away from the first receiving frame 31. The inclination angle of the second surface 32a2 with respect to the upper surface of the second frame 28 is set to be larger than that of the first surface 32a1. Also, the second surface 32a2 is a surface that is inclined upward with respect to the side away from the first receiving frame 31.

[0061] A plurality of legs 32b are provided on the lower surface of the base 32a integrally with the base 32a. For example, three legs 32b are provided. The three legs 32b are provided on the lower surface of the base 32a at both ends of the base 32a in the opposing direction of the adjacent bodies 100 and at the center in the opposing direction, specifically at the boundary between the first surface 32a1 and the second surface 32a2.

[0062] The fastening portions 32c are provided on the lower surface of the base 32a and integrally with the base 32a. The fastening portions 32c are provided at positions facing holes through which the fastening members 130 are inserted, which are formed in the second frames 28, and have screw holes into which the fastening members 130 are screwed.

[0063] The lid 13 includes a lid body 41, a plurality of caps 42, and a plurality of plugs 43. The lid 13 is connected to the first angle anchor 21 and the first receiving frame 31 by fastening members 14 at a plurality of locations in the width direction so as to be movable relative to the first receiving frame 31.

[0064] The lid body 41 is formed in a plate shape that is long in a direction (width direction) along the longitudinal direction of the first receiving frame 31. The lid body 41 has fastening member attachment portions 51 formed at multiple locations in the longitudinal direction, specifically, at positions facing each first frame 25 of the first angle anchor 21. The lid body 41 also has a first protrusion (convex portion) 52 provided on the lower surface facing the first receiving frame 31, a second protrusion 53 provided on the lower surface facing the second receiving frame 32, a plurality of third protrusions (protrusions) 54 provided on the upper surface, and screw holes 55.

[0065] The tip (edge) of the lid body 41 on the side where the second protrusion 53 is provided is formed into a curved surface. The first protrusion 52 of the lid body 41 contacts the curved recess 31c of the first receiving frame 31, but the other outer surfaces including the fastening member attachment portion 51 are separated from the base 31a and wall portion 31b of the first receiving frame 31 with a predetermined gap. Also, the second protrusion 53 of the lid body 41 contacts the upper surface of the second receiving frame 32, but the other outer surfaces are separated from the second receiving frame 32 with a predetermined gap.

[0066] For example, the lid body 41 is a casting formed by casting. For example, the lid body 41 is formed from FCD500.

[0067] The fastening member attachment portion 51 is provided at a position overlapping both the first frame 25 and the first receiving frame 31 of the lid main body 41. In this embodiment, the fastening member attachment portion 51 is formed at three locations on the lid main body 41. The fastening member attachment portion 51 has, for example, a bottomed cylindrical portion 51a forming a cylindrical space (recess), a restricting portion 51b formed on the inner circumferential surface of the cylindrical portion 51a, a seat portion 51c formed at the bottom of the cylindrical portion 51a, a hole portion 51d formed in the center of the seat portion 51c, and a groove portion 51e formed in the seat portion 51c.

[0068] The cylindrical portion 51a defines a space therein capable of accommodating a part of a threaded portion 61b of a bolt 61 of the fastening member 14, a nut 63, a disc spring 64, a spring washer 65, and a locking device 66, which will be described later.

[0069] The restricting portion 51b is provided on the inner circumferential surface of the cylindrical portion 51a, and restricts the rotation of the cap by engaging with a part of the cap.

[0070] The seat 51c has an outer surface formed in a spherical shape. The seat 51c forms a seat surface for the disc spring 64. The hole 51d is formed in the seat 51c and is formed so that the threaded portion 61b of the bolt 61 can be inserted therethrough. The hole 51d is formed with a diameter larger than the outer circumferential surface of the threaded portion 61b. For example, the clearance between the inner circumferential surface of the hole 51d and the outer circumferential surface of the threaded portion 61b is set to be the same as or slightly larger than the clearance between the side surface of the wall portion 31b of the first receiving frame 31 and the end face of the lid main body 41.

[0071] The groove 51e is formed in the seat 51c perpendicular to both the width direction of the lid body 41 and the axial direction of the hole 51d. The groove 51e is formed in the seat 51c at a position passing through the center of the hole 51d.

[0072] The first protrusion 52 extends in the width direction of the lid body 41. The first protrusion 52 is adjacent to the multiple fastening member attachment portions 51 in a direction perpendicular to the width direction of the lid body 41, and is provided on the underside of an end portion adjacent to the wall portion 31b of the first receiving frame 31. The outer surface of the first protrusion 52 is curved so as to be able to abut against the recess 31c of the first receiving frame 31. For example, the recess 31c of the first receiving frame 31 and the first protrusion 52 have a curved contact surface, such as a semicircular one, so as to be able to engage with each other.

[0073] The second protrusion 53 extends in the width direction of the lid main body 41. The second protrusion 53 is formed, for example, in a curved surface shape that is long in one direction and capable of line contact with the upper surface of the second receiving frame 32. The second protrusion 53 is formed, for example, in a curved surface shape whose cross section in a direction perpendicular to the longitudinal direction is semicircular or arc-shaped.

[0074] The third protrusions 54 are arranged in a matrix or dot pattern in the width direction of the lid body 41 and in the longitudinal direction perpendicular to the width direction. The third protrusions 54 are formed in a columnar or pyramidal shape, for example. The third protrusions 54 are formed in a polygonal columnar or pyramidal truncated shape, for example. Preferably, the ridges of adjacent third protrusions 54 are arranged in different directions. As a specific example, the third protrusions 54 are formed in a hexagonal columnar or pyramidal truncated shape. In addition, adjacent third protrusions 54 are arranged in positions shifted by 90 degrees. For example, the third protrusions 54 are set in a shape that provides a BPN value, which is a slip resistance value, of a predetermined value, for example, 40 or more.

[0075] The screw holes 55 are provided, for example, at both ends in the width direction of the lid body 41 and at the center in a direction perpendicular to the width direction. The screw holes 55 are formed so that, for example, a screw handle 44 for holding the lid body 41 can be screwed in. Here, the screw handle 44 is formed, for example, in a T-shape as shown in FIG. 8, and a screw portion 44a that screws into the screw holes 55 is formed at the tip. The screw handle 44 is screwed into the two screw holes 55 of the lid body 41, thereby serving as a handle when lifting the lid body 41.

[0076] 2 and 3, the cap 42 is formed in a bottomed cylindrical or bottomed truncated conical cylinder shape, at least a portion of which has substantially the same outer diameter as the inner peripheral surface of the cylindrical portion 51a so as to be able to fit into the cylindrical portion 51a. The cap 42 is fitted into the cylindrical portion 51a from the open end side. The cap 42 has a notch 42a formed in a portion of the peripheral wall and able to engage with the restricting portion 51b.

[0077] The end face of the cap 42 is provided with projections and recesses, such as letters, symbols, or figures, to provide information to the upper face. The cap 42 is made of a rubber material of the same color as the lid body 41, such as chloroprene rubber.

[0078] The cutout portion 42a is provided, for example, from the tip of the peripheral wall to a part of the upper surface of the cap 42. The cutout portion 42a not only engages with the restricting portion 51b, but also constitutes an insertion opening for a tool or the like for removing the cap 42 when removing the cap 42 from the lid main body 41.

[0079] As shown in Fig. 8, the plug 43 includes, for example, a plug body 43a that can be screwed into a screw hole 55 formed in the lid body 41, and a seal member 43b provided on the plug body 43a. The plug 43 closes the screw hole 55 of the lid body 41 when the screw handle 44 is not screwed into the screw hole 55. Furthermore, as shown by the two-dot chain line in Fig. 8, the plug 43 is removed from the screw hole 55 when the screw handle 44 is attached to the screw hole 55.

[0080] 3, the fastening member 14 includes a bolt 61, a washer 62, a nut 63, a disc spring 64, a spring washer 65, and a locking member 66. Each component of the fastening member 14 is formed from a metal material.

[0081] The bolt 61 includes a head 61a and a threaded portion 61b. For example, as shown by a two-dot chain line in Fig. 3, the bolt 61 with the washer 62 inserted therein is inserted from the lower surface side of the first frame 25 into a hole in the first frame 25, a hole in the first receiving frame 31, and a hole 51d of the fastening member attachment portion 51 formed in the lid main body 41. The head 61a is supported by the lower surface of the first frame 25 via the washer 62. For example, an M16 fixing bolt is used as such a bolt 61.

[0082] The nut 63 is screwed onto the threaded portion 61b of the bolt 61. The disc spring 64 abuts against the seat portion 51c of the fastening member attachment portion 51. The spring washer 65 is disposed between the nut 63 and the disc spring 64.

[0083] The locking device 66 restricts the nut 63 screwed onto the bolt 61 from rotating in a loosening direction. For example, the locking device 66 is an idling ring.

[0084] The widthwise dimension of the expansion joint cover 1 configured in this manner can be adjusted by cutting the cast first receiving frame 31, second receiving frame 32 and lid body 41 with a cutting tool 300 such as a metal cutter, based on the widthwise dimension of the body 100 to be installed, as shown in Figure 9.

[0085] In addition, for ease of explanation, Figure 9 shows an example in which the first receiving frame 31, the second receiving frame 32, and the lid body 41 are cut as a single unit, but the first receiving frame 31, the second receiving frame 32, and the lid body 41 can each be cut separately.

[0086] Preferably, the first receiving frame 31, the second receiving frame 32 and the lid body 41 are adjusted to a width that enables the first receiving frame 31, the second receiving frame 32 and the lid body 41 to be supported and fixed by multiple, for example at least two, first angle anchors 21 and second angle anchors 22.

[0087] Furthermore, as shown in FIG. 10, when the opposing direction of adjacent bodies 100 (first receiving frame 31 and second receiving frame 32) is X and the height direction (direction of gravity) is Z, the expansion joint cover 1 is set to a dimension that does not impair its functionality even when the body 100 moves a predetermined distance.

[0088] Specifically, the expansion joint cover 1 is set to a dimension such that the second protrusion 53 of the lid body 41 does not fall off from the upper surface of the second receiving frame 32 even if the body 100 moves relatively in the X direction by an expected amount of movement. For example, the dimensions in the X direction of the first surface 32a1 and the second surface 32a2 of the second receiving frame 32 are set so that the lid body 41 does not fall off from the upper surface of the second receiving frame 32 even if the body 100 moves 100 mm in the X direction from the reference position.

[0089] In addition, the inclination angles of the first surface 32a1 and the second surface 32a2 of the expansion joint cover 1 are set so that even if the main body 100 moves relatively in the Z direction by an expected amount of movement, the tip of the cover body 41 on the side opposite the fastening member 14 in the X direction will not be higher than a predetermined height from the top surface of the building material 111 poured into the mounting portion 110 or the top surface of the second receiving frame 32.

[0090] Here, the specified height is a height at which the tire of a moving vehicle and the tip of the lid body 41 do not interfere with each other, thereby preventing damage to each part of the vehicle such as the tire or each component of the expansion joint cover 1 such as the lid body 41 and the fastening member 14.

[0091] Next, an example of installation of the expansion joint cover 1 thus configured will be described below with reference to the flow chart shown in FIG.

[0092] First, the angle anchor 11 is provided in the mounting portion 110 of the skeleton 100 (step ST1). As a specific example, the mounting portion 110 of the skeleton 100 is drilled to form holes. Next, the first anchor bolt 24 and the second anchor bolt 27 are inserted into the holes, and the nuts of the anchor bolts 24, 27 are tightened to a specified torque value or the anchor heads are struck to expand the sleeves of the anchor bolts 24, 27 arranged inside the holes. As a result, the anchor bolts 24, 27 are fixed to the skeleton 100.

[0093] Next, the first frame 25 and the second frame 28, which are formed by connecting the connecting frames 23 and combining them into one unit, are placed in a predetermined position, and the first connecting member 26 and the second connecting member 29 are welded to the anchor bolts 24, 27 and the frames 25, 28. As a result, the angle anchor 11 is fixed to the mounting portion 110.

[0094] Next, the frame member 12 and the lid 13 to be placed are adjusted based on the width dimension of the body 100 (step ST2). As a specific example, as shown in FIG. 10, the first frame 31, the second frame 32, and the lid body 41 are cut by a cutting tool 300 so that the width dimensions of the first frame 31, the second frame 32, and the lid body 41 are as desired. At this time, the first frame 31, the second frame 32, and the lid body 41 are cut so that the first frame 31 and the second frame 32 are supported by at least two first angle anchors 21 and two second angle anchors 22, and the lid body 41 is attached to the first frame 31 by two fastening members 14. If adjustment is not required, this step does not need to be performed. Also, this step may be performed in advance before step ST1, not on-site.

[0095] Next, the receiving frame member 12 is attached to the angle anchor 11 (step ST3). As a specific example, the first receiving frame 31 is placed at a predetermined position on the first frame 25. The second receiving frame 32 is placed at a predetermined position on the second frame 28, and the fastening member 130 with the washer 131 disposed thereon is fastened to the fastening portion 32c of the second receiving frame 32 via the second frame 28, thereby fixing the second receiving frame 32 to the second frame 28.

[0096] Next, a building material 111 such as mortar is poured into the mounting portion 110 (step ST4). Specifically, as shown in Fig. 2, the building material 111 is poured below the angle anchor 11 of the mounting portion 110, on the opposite side of the lid 13 of the wall portion 31b of the first receiving frame 31, around the second receiving frame 32, and inside the second receiving frame 32. As a result, the angle anchor 11 and the receiving frame member 12 are fixed by the building material 111, and the area where the building material 111 has been poured is paved.

[0097] Next, the connecting frame 23 is removed from the first frame 25 and the second frame 28 (step ST5). Through these steps, the expansion joint cover 1 can be provided between the adjacent bodies 100. Note that the connecting frame 23 may be removed, for example, after step ST3 or after step ST4.

[0098] Next, the lid 13 is attached to the receiving frame member 12 (step ST6). As a specific example, the fastening member attachment portion 51 of the lid main body 41 is disposed at a position overlapping both the first frame 25 and the first receiving frame 31. Next, the bolt 61 is inserted from the lower surface side of the first frame 25 into the hole portion of the first frame 25, the hole portion of the first receiving frame 31, and the hole portion 51d of the fastening member attachment portion 51. Then, the disc spring 64 and the spring washer 65 are disposed on the threaded portion 61b of the bolt 61 in this order from the seat portion 51c side of the fastening member attachment portion 51, and the nut 63 is screwed onto the threaded portion 61b.

[0099] At this time, the nut 63 is fastened to such an extent that the lid body 41 can rotate within a slight angular range around an axis extending in the width direction passing through the seat portion 51c of the fastening member attachment portion 51 and the portion where the disc spring 64 abuts. In other words, the nut 63 is fastened to the bolt 61 with a torque that is not enough to completely crush the spring washer 65.

[0100] As a result, the recess 31c of the first receiving frame 31 abuts against the first protrusion (convex portion) 52, the disc spring 64 of the fastening member 14 abuts against the seat portion 51c of the fastening member mounting portion 51, and the second protrusion portion 53 of the lid main body 41 abuts against the upper surface of the base 32a of the second receiving frame 32.

[0101] In addition, when placing the lid body 41 in the first receiving frame 31 and the second receiving frame 32, the screw handle 44 is screwed into the two screw holes 55 of the lid body 41, and the lid body 41 is transported by grasping the screw handle 44.

[0102] In the expansion joint cover 1 configured in this manner, the fastening member 14 can withstand the load generated by sudden braking and sudden acceleration of the vehicle and the relative movement between adjacent bodies 100.

[0103] Specifically, for example, when a vehicle passes over the lid body 41, or when the relative position of adjacent bodies 100 changes due to an earthquake or the like, the lid body 41 rotates in the Z direction around an axis passing through the engagement portions of the seat portion 51c and the disc spring 64. However, the first receiving frame 31 and the lid body 41 engage with the curved recess 31c of the first receiving frame 31 and the curved first protrusion (convex portion) 52 of the lid body 41. Also, the lid body 41 and the fastening member 14 engage with the curved seat portion 51c and the disc spring 64.

[0104] Therefore, the recess 31c and the first protrusion (convex portion) 52, as well as the seat portion 51c and the disc spring 64 function as a curved joint. Also, there is a gap between the base 31a and the wall portion 31b of the first receiving frame 31 and the outer surface of the lid body 41, as well as between the hole portion 51d of the fastening member mounting portion 51 and the threaded portion 61b of the bolt 61. Therefore, even if the lid body 41 rotates around an axis passing through the engagement portions of the seat portion 51c and the disc spring 64, the lid body 41 can be prevented from interfering with the bolt 61. As a result, the expansion joint cover 1 can prevent the bolt 61 from being damaged, and as a result, the lid body 41 can be prevented from floating up due to the damage of the bolt 61. Also, the recess 31c and the first protrusion (convex portion) 52, as well as the seat portion 51c and the disc spring 64 function as a curved joint, making it easy to move the lid body 41.

[0105] Furthermore, for example, when the amount of rotation of the lid body 41 around one axis passing through the engagement parts of the seat part 51c and the disc spring 64 reaches a maximum, the wall part 31b and the lid body 41 come into contact with each other before the lid body 41 and the bolt 61 come into contact with each other. Therefore, the wall part 31b functions as a stopper for the rotation of the lid body 41, and it is possible to prevent the bolt 61 from being damaged.

[0106] Moreover, each component of the fastening member 14 is made of a metal material, without using a member made of a resin material such as a rubber ring, and therefore has high durability and is relatively resistant to deterioration over time. The lid 13 can be removed from the cap 42, the retainer 66 can be removed, and then the nut 63 can be removed to remove the lid body 41. The lid body 41 can be attached and detached easily by arranging the lid body 41, arranging the disc spring 64 and the spring washer 65, fastening the nut 63, and providing the retainer 66. In addition, the lid body 41 can be transported by screwing the screw handle 44 into the two screw holes 55 and gripping the screw handle 44. This improves the portability of the lid body 41.

[0107] 9, when the relative positions of adjacent bodies 100 are in a predetermined positional relationship, the lid body 41 of the expansion joint cover 1 comes into contact with the recess 31c of the first receiving frame 31 that is long and curved in one direction and the first protrusion 52 that is long and curved in the same direction, but the other outer surfaces of the lid body 41 are separated from the first receiving frame 31 with a predetermined gap. Similarly, the lid body 41 comes into contact with the upper surface of the second receiving frame 32 with the second protrusion 53 that is long in one direction, but the other outer surfaces of the lid body 41 are separated from the second receiving frame 32 with a predetermined gap.

[0108] Therefore, the lid body 41 is in line contact with the first receiving frame 31 and the second receiving frame 32, so that the lid body 41 is always in stable contact with the first receiving frame 31 and the second receiving frame 32. Therefore, the lid body 41 can suppress the generation of metallic sounds that occur when the vehicle is traveling, and can prevent damage to each component due to rattling.

[0109] In addition, as shown in FIG. 10, since a predetermined expected movement of the adjacent building bodies 100 can be tolerated, the lid body 41 can be prevented from falling off the second receiving frame 32, and from going beyond the second receiving frame 32 and climbing up onto the poured building material 111, i.e., the pavement. Therefore, the expansion joint cover 1 can prevent a vehicle from climbing up onto the fallen lid body 41, and from the second protrusion 53 of the lid body 41 coming into contact with the building material 111 and damaging the building material 111 (pavement). In addition, the expansion joint cover 1 can prevent the rotated lid body 41 from becoming an obstacle on the road. In addition, by making the tip of the lid body 41 curved, even if the tire of the vehicle or the like comes into contact with the lid body 41, the tire or the like can be prevented from being damaged.

[0110] Furthermore, the cap 42 has the notch 42a that comes into contact with the restricting portion 51b, thereby preventing the cap 42 from rotating. Therefore, when the upper surface of the cap 42 is formed with projections and recesses for providing information, the cap 42 can be maintained in a predetermined position so that the projections and recesses are in a predetermined position.

[0111] In addition, by making the first receiving frame 31, the second receiving frame 32 and the lid body 41 cuttable, the width dimension can be adjusted, and it is not necessary to create a variety of products with different width dimensions, which makes it possible to reduce manufacturing costs and provides a high degree of freedom in construction. Even if the width dimension is adjustable, by supporting the receiving frame member 12 and the lid 13 with the multiple first frames 25 and second frames 28, it is possible to prevent the expansion joint cover 1 from being misaligned.

[0112] In addition, the upper surface of the second receiving frame 32 is set at a position higher than the upper surface of the base 31a of the first receiving frame 31, and since building materials (mortar) are filled into the second receiving frame 32, the strength of the second receiving frame 32 can be improved.

[0113] In addition, since the lid body 41 has a configuration having a plurality of third protrusions 54 on the upper surface, rainwater on the upper surface of the lid body 41 flows between the third protrusions 54, so that it is possible to prevent rainwater from accumulating on the upper surface of the lid body 41. Therefore, it is possible to suppress the occurrence of rust on the lid body 41. In addition, by configuring the lid body 41 to have a plurality of third protrusions 54, it is possible to improve the BPN value. Furthermore, by making the third protrusions 54 polygonal columnar or pyramidal, it is possible to further improve the BPN value. In addition, by making the third protrusions 54 polygonal (hexagonal in this embodiment) columnar or pyramidal, and arranging them at a predetermined angle (90 degrees in this embodiment) from the adjacent third protrusions 54, it is possible to further reduce the BPN value. In this embodiment, the BPN value can be set to 40 or more.

[0114] Furthermore, by using an M16 fixing bolt as the bolt 61 of the fastening member 14, even in the unlikely event that a load is applied to the bolt 61, the bolt 61 can be prevented from being damaged.

[0115] Furthermore, the distance between the fulcrums of the lid body 41 is constant even in normal times, when the adjacent bodies 100 move relative to each other, or when the lid body 41 is rotated and movable.

[0116] As described above, according to the expansion joint cover 1 of this embodiment, damage to the bolt can be prevented even when the vehicle is suddenly braked or stopped.

[0117] The present invention is not limited to the above-described embodiment. For example, the clearance 200 between adjacent bodies 100 and each dimension of the expansion joint cover 1 can be set appropriately.

[0118] In addition, the distance between the first receiving frame 31 and the second receiving frame 32 and the width of the clearance 200 between the adjacent bodies 100 may be different. For example, the width of the clearance 200 between the adjacent bodies 100 may be wider than the distance between the first receiving frame 31 and the second receiving frame 32.

[0119] That is, the present invention is not limited to the above-mentioned embodiment, and various modifications can be made in the implementation stage without departing from the gist of the invention. In addition, the embodiments may be implemented in appropriate combination, and in that case, the combined effect can be obtained. Furthermore, the above-mentioned embodiment includes various inventions, and various inventions can be extracted by combinations selected from the multiple components disclosed. For example, if the problem can be solved and the effect can be obtained even if some components are deleted from all the components shown in the embodiment, the configuration from which the components are deleted can be extracted as an invention. [Explanation of symbols]

[0120]

[0033] 1...expansion joint cover, 11...angle anchor, 12...receiving frame member, 13...lid, 14...fastening member, 21...first angle anchor, 22...second angle anchor, 23...connecting frame, 23a...end wall, 24...first anchor bolt, 25...first frame, 25a...wall portion, 25b...end wall, 26...first connecting member, 27...second anchor bolt, 28...second frame, 28a...wall portion, 28b...end wall, 29...second connecting member, 31...first receiving frame, 31a...base, 31b...wall portion, 31c...recess, 32...second receiving frame, 32a...base, 32a1...first surface, 32a2...second surface, 32b...leg portion, 32c...fastening portion, 32d...opening , 41...lid body, 42...cap, 42a...notch portion, 43...plug, 43a...plug body, 43b...sealing member, 44...screw handle, 44a...screw portion, 51...fastening member mounting portion, 51a...tubular portion, 51b...regulating portion, 51c...seat portion, 51d...hole portion, 51e...groove portion, 52...first protrusion portion (convex portion), 53...second protrusion portion, 54...third protrusion portion (protrusion), 55...screw hole, 61...bolt, 61a...head, 61b...screw portion, 62...washer, 63...nut, 64...bell spring, 65...spring washer, 100...body, 110...mounting portion, 111...building material, 120...bolt, 130...fastening member, 131...washer, 200...clearance, 300...cutting tool.

Claims

1. An expansion joint cover provided in a clearance between a plurality of bodies constituting a roadway, A first angle anchor provided to the frame; a second angle anchor provided on the body adjacent to the body on which the first angle anchor is provided, with the clearance therebetween; a first receiving frame provided on an upper surface of the first angle anchor; a second receiving frame fixed to an upper surface of the second angle anchor; a cover that is provided across the first receiving frame and the second receiving frame, has a recess on the first receiving frame side where a seat portion having a spherical seat surface is formed, and a part of the lower surface on the second receiving frame side is supported by the second receiving frame; a bolt having a head that abuts against a lower surface of the first angle anchor, the bolt being inserted through the first angle anchor, the first receiving frame, and the seat portion, and the bolt having a tip that is received in the recess; a nut received in the recess and screwed onto the bolt; a disc spring that is received in the recess, is provided on the bolt, is disposed between the seat portion and the nut, and abuts against the seat portion; An expansion joint cover comprising:

2. The first receiving frame has a curved recess provided on an upper surface thereof on a side opposite to the second receiving frame with respect to the bolt, The expansion joint cover according to claim 1 , wherein the lid has a curved convex portion provided on a lower surface thereof that abuts against the concave portion.

3. The expansion joint cover according to claim 1 or 2, wherein the lid has a curved protrusion extending in a width direction of the lid and having a tip abutting an upper surface of the second receiving frame.

4. The expansion joint cover described in any one of claims 1 to 3, wherein the second receiving frame has a plurality of legs and a top plate portion that connects the legs and has a plurality of openings formed therein, and building materials are poured inside.

5. The expansion joint cover according to claim 1 , wherein the lid has a plurality of protrusions formed on an upper surface thereof.

6. The plurality of protrusions are shaped like hexagonal columns or hexagonal truncated pyramids, The expansion joint cover according to claim 5 , wherein adjacent said projections are arranged with a 90 degree offset therebetween.

7. The expansion joint cover according to any one of claims 1 to 5, wherein the first angle anchor and the second angle anchor comprise an anchor bolt fixed to the main body, a frame fixing the first receiving frame or the second receiving frame, and a connecting member welded to the frame and the anchor bolt.

Images