JP3980384B2 - Floor expansion joint device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a floor expansion joint device that closes a gap existing as a joint between floor portions of two adjacent buildings and allows relative displacement of each floor portion due to an earthquake or the like.
[0002]
[Prior art]
When two or more concrete structures such as apartment buildings are built adjacent to each other, a gap is interposed between the buildings as a joint, and this gap is the safety between the buildings on the floor of each building. In order to ensure smooth traffic, the floor expansion joint device is closed. This floor expansion joint device is configured to allow relative displacement between buildings due to a sudden earthquake or the like, and to maintain the space closed.
[0003]
A conventional technique of such a floor expansion joint device is disclosed as a floor joint device in Japanese Patent Laid-Open No. 2000-328664. In this floor joint device, a concave portion is formed in each floor portion of the left and right buildings built via the joint portion which is a gap, and the support body is supported by a plurality of countersunk screws in each concave portion. The fixing brackets are fixed, and both ends of the joint plate which is the cover body are supported by each fixing bracket. A plurality of support rods are fixedly or pivotably provided at predetermined intervals on the center bottom surface of the joint plate, and below the joint plate are center maintaining means corresponding to positions where the support rods are provided. A central maintenance device is provided.
[0004]
The central maintenance device has a central pivot portion that pivotally supports the support rod so as to be movable in the vertical direction, and has a pantograph-shaped telescopic link formed with two square frame shapes, and pivots at both ends of the telescopic link. And a hinge member that is attached to the pin and that is pivotable in the vertical direction. Each hinge member is connected to each fixing bracket provided on each floor portion, whereby the telescopic link can be inclined in the vertical direction. Moreover, since the pivot pins of the both ends of the expansion / contraction link are connected to each hinge member, the expansion / contraction link can be displaced in the horizontal direction along the extending direction of the joint.
[0005]
A support rod, which is a connecting pin provided on the center bottom surface of the joint plate, is inserted into the central pivot of the central maintenance device so as to be movable in the vertical direction, so that the vertical displacement of the joint plate is not restricted. Even if each floor of each building is displaced in the direction of approaching and separating from each other due to an earthquake or the like, when the floors are close to each other, the joint plate is moved up on each fixing bracket while moving upward, Displacement in the adjacent direction can be allowed. Further, when each building is separated, the joint plate moves downward from the state where it rides on each of the fixing brackets, or slides on each of the fixing brackets while being supported by each of the fixing brackets, and then separates. Allow directional displacement.
[0006]
[Problems to be solved by the invention]
In the conventional floor joint device configured as described above, both ends of the telescopic link of the central maintenance device are respectively connected to the hinge members by pivot pins, and these hinge members are fixed to the floor portions. Since they are connected to the fixing brackets, when an earthquake or the like occurs, the floor portions of the two buildings are viewed from the front side to the left and right. The displacement of the three-direction components in the front-rear direction Y corresponding to the depth direction and the vertical direction Z corresponding to the height direction is allowed, and the joint plate is maintained at the center of the joint portion between the floor portions by the central maintenance device. In the state, the joint plate is prevented from interfering with each floor portion and each fixing bracket with respect to the displacement in the left-right direction X, the front-rear direction Y, and the up-down direction Z. Since both ends are connected to each hinge member by each pivot pin, both ends of the telescopic link follow each hinge member and each fixing bracket against relative displacement in the longitudinal direction Y of each floor portion. Therefore, it follows each floor portion and is displaced in the front-rear direction Y.
[0007]
As described above, the displacement in the front-rear direction Y of the expansion / contraction link is accompanied by the expansion / contraction operation of the expansion / contraction link, and the displacement in the front-rear direction Y of each floor portion is limited by the maximum length of the expansion / contraction link. If the stretched length is exceeded, the telescopic link will break. For this reason, there exists a problem that the big displacement between each floor part of the front-back direction Y cannot be accept | permitted.
[0008]
In addition, since a support rod is provided on the center bottom surface of the joint plate, when attaching the joint plate to the telescopic link, after attaching the support rod to the center bottom surface of the joint plate, the support rod is attached to the central pivot portion of the telescopic link. After inserting or attaching only the support rod to the central pivot of the telescopic link, it is necessary to attach the joint plate to the support rod while maintaining the attachment state. There is a problem that requires.
[0009]
An object of the present invention is to provide a floor expansion joint device that facilitates assembly work, improves workability, and allows a large relative displacement in the front-rear direction of each floor portion.
[0010]
[Means for Solving the Problems]
  The present invention according to claim 1 is a support that is fixed in parallel and substantially horizontally to each of the opposing wall portions of the two floor portions adjacent to each other with a gap therebetween,
  An attachment auxiliary member that extends in parallel with one support and is fixed to an end of the one support that is closer to the other support;
  A guide rail that extends parallel to the other support and is fixed to an opposing wall provided with the other support;
  A pantograph-like link mechanism is formed in which a plurality of link members intersect at the center between both ends, and one end is connected to the mounting auxiliary member so as to be rotatable about a substantially vertical axis, and the other end is guided. A plurality of central maintaining means movably supported on the rail;
  A cover body having a lattice-like structure in which both end portions are supported by each support body and the central portion is connected to each center maintaining means;
  A connecting pin that is detachably attached to the cover body and each central maintaining means, and that couples the cover body and each central maintaining means;
  A sliding member that is movably mounted on the guide rail and in which the other end of each center maintaining means is rotatably connected about a substantially vertical axis.See
  An insertion hole through which the shaft portion of the connecting pin is inserted is formed at the intersection of each link member,
  A passing member in which an elongated hole extending in the longitudinal direction of the threading member is formed on the crossing portion of each link member so as to extend between a plurality of central maintaining means and coincide with a position where the insertion hole is formed. Is provided,
  A lattice-like structure in which a shaft hole through which the shaft portion of the connecting pin is inserted is fixed to the threading member,
  The connecting pin is mounted in a state where the shaft portion thereof is inserted through the shaft hole of the lattice-like structure, the long hole of the through member, and the insertion hole of each link member, Are concatenatedThis is an expansion joint device for floors.
[0011]
  According to the present invention, the supports are fixed in parallel and substantially horizontally to the opposing wall portions of the floor portions facing each other. An attachment auxiliary material is fixed to the end of one support, and a guide rail is fixed to the opposing wall on which the other support is provided. Centering means for mounting aidsofOne end isFree to rotate around a nearly vertical axisConnected to the guide railA sliding member is mounted so that it can move freely.The other end of the central maintenance meansConnectable to rotate around a nearly vertical axisIs done. A cover body is connected to the central maintaining means by a connecting pin, and both ends of the cover body are supported by each support body.
[0012]
The cover body has a lattice-like structure, and a central portion of the lattice-like structure is connected to the center maintaining means by the connecting pin. Since the center maintaining means constitutes a pantograph-like link mechanism in which a plurality of link members intersect at the center, each floor portion expands and contracts due to relative displacement in the left-right direction approaching and separating, and is connected to the center by a connecting pin. A cover body is maintained in the center of the gap between the floor portions.
[0013]
One end of the center maintaining means is connected to a mounting auxiliary member provided on one support body so as to be rotatable about a substantially vertical axis, and the cover body and the center maintaining means are pin-coupled by a connecting pin, and further the center maintaining is performed. Since the other end portion of the means is supported by the guide rail, even if each floor portion is relatively displaced in the front-rear direction perpendicular to the left-right direction on the horizontal plane, the center maintaining means extends at both ends separated from each other, By the expansion and contraction operation in which both end portions are contracted close to each other, the relative displacement in the front-rear direction of each floor portion is followed.
[0014]
Moreover, even if the relative displacement in the front-rear direction of each floor portion exceeds the maximum length of the central maintenance means, the other end of the central maintenance device can move along the guide rail, so that the central maintenance means has the maximum length. The other end portion freely moves along the guide rail in a state where the cover body is extended to a maximum length or in a transitional length state between the maximum length and the minimum length. While maintaining the center between the portions and closing the gap, the displacement of the guide rail with respect to the other end can be absorbed, and the relative displacement in the front-rear direction of each floor portion can be allowed.
[0015]
  Since the cover body is connected to the center maintaining means by the connecting pin as described above, the cover body is maintained at the center between the floor portions to close the gap, and both ends are supported by the support bodies.TheBy moving in the front-rear direction as it is, damage due to interference with each support body and each floor portion of the cover body can be prevented, and relative displacement in the front-rear direction of each floor portion can be allowed smoothly.
[0016]
Further, since the connecting pin is detachably attached to the cover body and each center maintaining means, when connecting the lattice structure to each center maintaining means, the connecting pin is inserted from above the lattice structure. It can be attached to the grid structure and the center maintaining means, whereby the work of connecting the grid structure to the center maintaining means can be easily performed, and workability during construction is improved.
[0017]
According to a second aspect of the present invention, an inspection opening is provided in the cover body, and a lid is detachably provided in the inspection opening.
[0018]
According to the present invention, an inspection opening is provided in the cover body, and a lid is provided in the inspection opening so as to be detachable.In order to remove foreign matters such as dust in the gap and perform maintenance inspection, Move the lid from the inspection opening to open the inspection opening, and easily insert the operator's hand and work tools into the gap from the outside to remove dust, install and remove parts, etc. Predetermined work can be performed.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a vertical cross-sectional view showing a configuration of the floor expansion joint device 1 according to an embodiment of the present invention at a position where the center maintaining means 11 is provided, and FIG. 2 is an inspection opening of the floor expansion joint device 1. 3 is a vertical cross-sectional view showing a configuration at a position where 16 is provided, FIG. 3 is a plan view of a floor expansion joint device 1 as seen from above, and FIG. 1 is a section line I-- in FIG. 2 shows a cross section seen from I, and FIG. 2 shows a cross section seen from the section line II-II in FIG. As shown in FIGS. 1 and 2, the floor portions 3a and 3b of the two buildings are viewed from the front side to the left and right, and the direction in which the floor portions 3a and 3b approach and separate from each other is defined as the left and right direction X. A direction corresponding to the front and depth of the portions 3a and 3b is defined as a front-rear direction Y, and a height direction is defined as a vertical direction Z. Below, the structure of the expansion joint apparatus 1 for floors of this Embodiment is demonstrated.
[0020]
In order to avoid mutual interference due to the displacement in the left-right direction X between the buildings due to a sudden earthquake and uneven ground subsidence, there is a gap 2 as a joint between adjacent buildings. This gap 2 is also present between the floor portions 3a and 3b of each building having a concrete structure, and the portions used as passages and rooms among the floor portions 3a and 3b are located on the left and right sides of the floor portions 3a and 3b. In order to allow relative displacement in which the three direction components of the direction X, the front-rear direction Y, and the up-down direction Z are combined, and to maintain the gap 2 closed, the floor expansion joint device 1 of the present embodiment Provided.
[0021]
The floor expansion joint device 1 extends in the front-rear direction Y in parallel and substantially horizontally to the opposing wall portions 4a and 4b facing each other between two floor portions 3a and 3b adjacent to each other with a gap 2 therebetween, and is fixed respectively. Supporting members 5a and 5b, an attachment auxiliary member 7 extending in parallel with one supporting member 5a and fixed to the end 6a of the one supporting member 5a near the other supporting member 5b, and the other supporting member 5b. A guide rail 8 that extends in parallel with the other support 5b and is fixed to the opposing wall 4b in the vicinity of the end 6b near the one support 5a, and a central portion 10c between both ends 10a and 10b. A pantograph-like link mechanism in which a plurality of link members 9 intersect is formed, one end portion 10a is connected to the attachment auxiliary member 7 so as to be rotatable about a substantially vertical axis L1, and the other end portion 10b is connected to the guide rail 8. Slidably supported in the front-rear direction Y A plurality of center maintaining means 11, and a cover body 14 having a lattice-like structure 13 in which both end portions 12 a and 12 b are supported by the support bodies 5 a and 5 b and the center portion 12 c is connected to each center maintaining means 11; The cover body 14 and each center maintaining means 11 are detachably mounted, and include a connecting pin 15 that couples the cover body 14 and each center maintaining means 11 to each other.
[0022]
The cover body 14 is provided with one or a plurality of inspection openings 16 at predetermined intervals in the front-rear direction Y between the central maintaining means 11 adjacent to the front-rear direction Y. Is provided with a detachable lid 17.
[0023]
FIG. 4 is an enlarged cross-sectional view of the vicinity of one end 10 a of the center maintaining means 11. The configuration of the support 5a provided on the one floor portion 3a will be described. This support 5a is fixed to a recess 22a formed in a step below the floor surface 21a at the upper corner of the opposing wall 4a of the floor portion 3a, and in the front-rear direction Y perpendicular to the paper surface of FIG. A longitudinal assembly structure, which is fixed to the recess 22a by a plurality of anchor bodies 23, 24 embedded in the recess 22a of the floor portion 3a at intervals in the front-rear direction Y, and the anchor bodies 23, 24, respectively. It has leg bodies 25a, 26a, a frame 27a made of hollow steel and fixed to each leg body 25a, 26a, and a guide plate 28a fixed to the frame 27a.
[0024]
The guide plate 28a is bent at right angles downward (downward in FIG. 4) from a substantially horizontal support portion 30a fixed on the frame 27a by a plurality of screws 29a and a bent portion 31a on the gap 2 side of the support portion 30a. And a bent portion 32a which is continuous with the bent portion 33a on the floor surface 21a side of the support portion 30a and which is inclined upward as it is separated from the bent portion 32a, and an uppermost bent portion 35a of the guide portion 34a. And a parting portion 38a which is bent at a right angle downward to a bent portion 37a on the side away from the guide portion 34a of the upper surface portion 36a. The bent portions 31a, 33a, 35a, and 37a of the guide plate 28a are parallel to each other.
[0025]
One end of a plurality of rod-like connecting members 40 provided at intervals in the front-rear direction Y is fixed to the frame 27a by welding, and the other end of each connecting member 40 is bent in a substantially L shape. Each auxiliary metal fitting 41 is welded and fixed, and each auxiliary metal fitting 41 is welded and fixed to the parting portion 38a. By the connecting member 40 and the auxiliary metal fitting 41, the guide portion 34a is supported by the frame 27a together with the upper surface portion 36a and the parting portion 38a, and the weight of the cover body 14 is bent and deformed by the guide portion 34a and the upper surface portion 36a. It is prevented.
[0026]
The attachment auxiliary member 7 is fixed together with a long reinforcing member 79 by a bolt 77 and a nut 78 to a rising portion of a leg 26a arranged on the space 2 side. The attachment auxiliary material 7 is a short material made of a steel material having an L-shaped cross section, and is provided for each attachment position of the one end portion 10 a of the center maintaining means 11 with a space in the longitudinal direction of the reinforcing member 79. The reinforcing member 79 is made of a section steel material having an L-shaped cross section.
[0027]
FIG. 5 is an enlarged cross-sectional view of a part of the cover body 14 as seen from the section line III-III in FIG. The cover body 14 includes a lattice structure 13, a filling layer 46 described later, and a plurality of decorative tiles 47. The lattice-like structures 13 are arranged at equal intervals in the long side direction (the left-right direction in FIG. 5) which is the front-rear direction Y in the state where the cover body 14 is installed on each support 5a, 5b. A plurality of ribs 60 and a plurality of rods 61 that connect the ribs 60 to each other in the longitudinal direction and are provided at intervals in a short side direction perpendicular to the longitudinal direction between the end plates 49a and 49b are latticed. And has a plurality of through holes 62 in the thickness direction (vertical direction in FIG. 5). Each rib 60 and each rod 61 are made of steel or stainless steel and are welded to each other.
[0028]
FIG. 6 is an enlarged cross-sectional view of the vicinity of the other end portion 10 b of the center maintaining means 11. The configuration of the support 5b provided on the other floor portion 3b will be described. This support 5b is fixed to a recess 22b formed in a step below the floor surface 21b at the upper corner of the opposing wall 4b of the floor portion 3b, and is substantially horizontal front and rear perpendicular to the paper surface of FIG. The assembly structure is elongated in the direction Y, and is recessed by a plurality of anchor bodies 70, 71, 72 embedded in the recess 22b of the floor portion 3b with a space in the front-rear direction Y, and the anchor body 70 near the gap 2. A leg body 25b fixed to 22b, a frame 27b made of a hollow section steel fixed to the leg body 25b and the anchor bodies 71 and 72, and a guide plate 28b fixed to the frame 27b.
[0029]
The guide plate 28b is bent at right angles downward (downward in FIG. 6) from a substantially horizontal support portion 30b fixed on the frame 27b by a plurality of screws 29b and a bent portion 31b on the gap 2 side of the support portion 30b. And a bent portion 32b that is continuous with the bent portion 33b on the floor surface 21b side of the support portion 30b, and that is inclined upward as it is separated from the bent portion 32b, and an uppermost bent portion 35b of the guide portion 34b. And a parting portion 38b which is bent at a right angle downward to a bent portion 37b on the side away from the guide portion 34b of the upper surface portion 36b. The bent portions 31b, 33b, 35b, 37b of the guide plate 28b are parallel to each other.
[0030]
  Vertical wall surfaces 69a and 69b extending in the front-rear direction Y so as to face each other are formed below the recesses 22a and 22b of the opposing wall portions 4a and 4b. The bracket 7 is attached to the vertical wall surface 69b of the other opposing wall portion 4b.6Is fixed by the anchor body 73, and the bracket 76The guide rail 8 is fixed to. A pair of sliding members 74 and 75 connected to the guide rail 8 so as to be rotatable about a substantially vertical axis L2 above and below the other end portion 10b of the center maintaining means 11 are movably fitted in the front-rear direction Y. It is supported by being stuck.
[0031]
Referring again to FIG. 5, the cover body 14 is attached to the lattice-like structure 13 and the lower surface of the lattice-like structure 13 with an adhesive, and is a cushioning sheet made of, for example, Teflon (trade name). 45a, 45b, a filling layer 46 in which a lattice structure 14 is filled with a filler such as cement mortar and cured, and a front-rear direction Y (left-right direction in FIG. 5) on the upper surface of the filling layer 46 and the front-rear direction Y A plurality of decorative tiles 47 aligned and fixed in a horizontal direction X (a direction perpendicular to the paper surface of FIG. 5) perpendicular to the horizontal plane, and having a concave cross section and accommodating the lattice structure 13 The wall body 48 filled with the filler, a pair of end plates 49a, 49b that close the openings on both sides in the left-right direction X of the wall body 48, bolts 50a, 50b and nuts 51a, 51b A parting cover member 52a, 52b that is fixed in a longitudinal direction in the front-rear direction Y, a plurality of left and right attachment pieces 53a, 53b that are welded and fixed to each parting cover member 52a, 52b, and a plurality of attachment pieces A plurality of left and right ball casters 54a and 54b are provided.
[0032]
Each of the ball casters 54a and 54b includes ball receiving holders 55a and 55b fixed to the respective mounting pieces 53a and 53b, and spherical balls 56a and 56b that are rotatably supported by the ball receiving holders 55a and 55b. In such ball casters 54a and 54b, in order to avoid contact with the guide portions 34a and 34b of the ball receiving holders 55a and 55b, the axes L3 and L4 passing through the center points of the balls 56a and 56b are Are inclined outward by a predetermined angle θa, θb. The predetermined angles θa and θb are selected, for example, from 25 ° to 35 ° so as to prevent an excessively large bending load from acting on the mounting pieces 53a and 53b from the ball casters 54a and 54b.
[0033]
The ball casters 54a and 54b are positioned so that the lower ends of the balls 56a and 56b are in contact with a virtual plane including the surfaces facing the support portions 30a and 30b of the cushioning sheets 45a and 45b. 30b, the cushioning sheets 45a and 45b are not subject to excessive sliding resistance, and the cover body 14 can be smoothly displaced with respect to the support bodies 5a and 5b.
[0034]
7 is an enlarged cross-sectional view of the vicinity of the central portions 10c and 12c of the cover body 14 and the central maintaining means 11, and FIG. 8 is a plan view of the vicinity of the connecting pin 15 as viewed from above. With reference also to FIG. 3, the specific structure of said center maintenance means 11 is described. Each center maintaining means 11 is arranged so as to intersect in an X shape, and the first and second link members 80 and 81 into which the connecting pin 15 is inserted in the center, and the first and second link members 80 and 81. Third and fourth link members 84, 85 connected to one end portion disposed on the one floor portion 3a side by means of link pins 82, 83 so as to be rotatable about a substantially vertical axis, and first and second Fifth and sixth link members 88, 89 connected to the other end portion of the link members 80, 81 on the other floor portion 3b side so as to be rotatable around a substantially vertical axis by link pins 86, 87; A link pin 90 for connecting the other end portions of the third and fourth link members 84 and 85 so as to be rotatable around a substantially vertical axis, and fifth and sixth link members 88 and 89. In the state where each other end of And a link pin 91 which rotatably connected about a vertical axis.
[0035]
The first to sixth link members 80, 81, 84, 85, 88, 89 are realized by a section steel material having a concave cross section. Each link pin 82, 83, 86, 87, 90, 91 is realized by a bolt and a nut. Further, the connecting pin 15 is a long bolt having a length of about 20 to 30 cm in order to facilitate mounting work from above and prevent the connecting pin 15 from falling off.
[0036]
On the intersecting portion of the first and second link members 80 and 81, a long through member 92 extending between the plurality of central maintaining means 11 is provided. An insertion hole (not shown) through which the shaft portion 93 of the connecting pin 15 is inserted is formed at the intersection of the first and second link members 80 and 81, respectively, so as to coincide with the position where the insertion hole is formed. The through member 92 is formed with a long hole 94 extending in the longitudinal direction of the through member 92. The through member 92 is realized by a section steel material having a concave cross section, and is disposed with the web 96 on which the elongated hole 94 is formed facing down and the pair of flanges 97 and 98 facing upward.
[0037]
For example, three ribs 60 arranged on the intersection of the first and second link members 80 and 81 are fixed to the through member 92 by welding. The pair of ribs 60 a and 60 b disposed on both sides in the front-rear direction Y with respect to the connecting pin 15 is disposed through the flanges 97 and 98, but the rib 60 c disposed in the center in the front-rear direction Y is a through member 92. The partition walls 102 and 103 fitted between the ribs 60a and 60b on both sides are welded and fixed to the end portions 100 and 101 facing each other. . In this way, the lattice-like structure 13 is formed with a work space 105 surrounded by the ribs 60a and 60b on both sides and the partition walls 102 and 103. With such a work space 105, the connecting pin 15 can be easily mounted into the long hole 94 and each insertion hole (not shown) from above with the grid structure 13 mounted thereon. In this mounted state, the head portion 106 of the connecting pin 15 is supported by the peripheral edge portion of the long hole 94 of the web 96 and is prevented from coming off.
[0038]
  When attaching the connecting pin 15 to the long hole 94 and the insertion holes of the first and second link members 80 and 81, first, the one end portion 10 a of the center maintaining means 11 is connected to the mounting aid 7 by the link pin 90. Then, the other end portion 10b of the center maintaining means 11 is connected to the sliding members 74 and 75 attached to the guide rail 8 by the link pins 91, and the center time means 11 is arranged in a predetermined interval in the front-rear direction Y. Then, the through member 92 and the lattice-like structure 13 are mounted on each center maintaining means 11. At this time, the long holes of the through member 92 are connected to the through holes of the first and second link members 80 and 81 so that the long holes 94 of the through member 92 communicate with each other in the work space 105 of the lattice structure 13. 94, the first and second link members 80 and 81 are positioned so that the insertion holes thereof substantially coincide with each other, and the connecting pin 15TheInstalling.
[0039]
The threading member 92 is made of a shape steel material having a concave cross section, and a plurality of mounting pieces 109 having substantially the same height as the flanges 97 and 98 of the threading member 92 are spaced at a predetermined interval in the longitudinal direction of the threading member 92. It is fitted in a reverse concave state with the web facing upward and fixed by welding. Bolts 110 are welded and fixed to each mounting piece 109 in advance. Each bolt 110 projects through the web of each mounting piece 109 through the shaft portion, and the head is welded to the web.
[0040]
A bottom cover 111 is welded and fixed to the lattice-like structure 13 of the cover body 14 corresponding to the position of each mounting piece 109, and the shaft portion of the bolt 110 is inserted into each mounting piece 109. A shaft hole (not shown) that can be formed is formed. A plurality of grid-like structures 13 are mounted on the through member 92 to which each attachment piece 109 is attached, aligned in a predetermined arrangement position, and each bolt 110 protruding upward from the web of each attachment piece 109. Each lattice-like structure 13 is connected to the through member 92 by inserting the shaft portion into the shaft hole of the bottom lid 111 and screwing and tightening the nut 112. Thereafter, the filler 14 such as cement mortar is filled, the decorative tile 47 is pasted, and the filler is cured, whereby the cover body 14 is connected to the central maintaining means 11 through the through member 92.
[0041]
In such installation work of the cover body 14 to the central maintenance means 11, the mounting work of the connecting pins 15 can be performed on the lattice-like structure 13, so that a hand is inserted under the central maintenance means 11. Thus, it is not necessary to perform a complicated operation such as screwing the nut from the back, and the central maintaining means 11, the through member 92, and the lattice structure 13 are easily connected with the connection pin 15 with high accuracy. can do.
[0042]
Further, since the elongated holes 105 are formed in the through member 92 so as to extend in the longitudinal direction, an error caused by a displacement of the mounting position in the front-rear direction Y of each central maintaining means 11 with respect to the interval between the elongated holes 105 is eliminated. 15 is allowed, and the displacement of the cover body 14 in the left-right direction X can be reliably transmitted to the center maintaining means 11.
[0043]
As described above, according to the present embodiment, since the lattice-like structure 13 of the cover body 14 is connected to the central maintaining means 11 by the connecting pins 15 attached from above, the floor portions 3a and 3b are close to each other. The cover body 14 can be maintained at the center of the gap 2 between the floor portions 3a and 3b even if the cover body 14 expands or contracts due to the relative displacement in the left-right direction X that is separated.
[0044]
The one end 10a of the center maintaining means 11 is connected to a mounting auxiliary member 7 provided on one support 5a so as to be rotatable about a substantially vertical axis L1, and the cover body 14 and the center maintaining means 11 are connected to each other. Since the other end portion 10b of the center maintaining means 11 is supported by the guide rail 8, the floor portions 3a and 3b are relatively displaced in the front-rear direction Y perpendicular to the left-right direction X. In addition, the center maintaining means 11 can be extended with the both end portions 10a and 10b being separated from each other, and the both end portions 10a and 10b can be contracted and expanded and contracted, and the floor portions 3a and 3b can be expanded and contracted. By making the cover body 14 follow the relative displacement in the front-rear direction Y, the relative displacement can be allowed.
[0045]
In addition, even if the relative displacement in the front-rear direction Y of each floor portion 3a, 3b exceeds the maximum allowable length of the center maintaining means 11, the other end portion 10b of the center maintaining means 11 moves along the guide rail 8. Since the central maintaining means 11 is extended to the maximum length or in a transitional length state between the maximum length and the minimum length, the other end portion 10b can be freely moved along the guide rail 8. A state in which the cover body 14 is maintained at the center between the floor portions 3a and 3b and the gap 2 remains blocked by this free movement, and cannot be displaced further with respect to the one floor portion 3a. With respect to the other end portion 10b, the displacement of the guide rail 8 is allowed, and the relative displacement in the front-rear direction Y of each floor portion 3a, 3b can be allowed.
[0046]
Furthermore, a predetermined cover body 14 (see FIGS. 2 and 3) among the plurality of cover bodies 14 is provided with an inspection opening 16, and a lid 17 is attached to and detached from the inspection opening 16. In order to remove foreign matters such as dust in the gap 2 and to perform maintenance and inspection, the lid 17 is moved from the inspection opening 16 to open the inspection opening 16 and enter the gap 2. It is possible to easily insert a worker's hand, work tool, and the like from the cover body 14 or the floor surfaces 21a and 21b, which are outside, to perform predetermined work such as taking out dust and attaching and removing parts.
[0047]
【The invention's effect】
According to the first aspect of the present invention, one end of the center maintaining means is connected to an attachment auxiliary member provided on one support body so as to be rotatable about a substantially vertical axis, and the cover body and the center maintaining means are provided. Are connected to each other by the connecting pin, and the other end of the center maintaining means is supported by the guide rail. Therefore, even if each floor portion is relatively displaced in the front-rear direction perpendicular to the left-right direction on the horizontal plane, The both ends can expand and contract to follow the relative displacement in the front-rear direction of each floor portion. In addition, even if the relative displacement in the front-rear direction of each floor portion exceeds the maximum length of the central maintaining means, the other end of the central maintaining device is movable along the guide rail, so the other end of the central maintaining means The guide rail can move freely with respect to the section, and the relative displacement in the front-rear direction of each floor portion can be allowed.
[0048]
Further, since the cover body is connected to the center maintaining means by the connecting pin, the cover body is maintained at the center between the floor portions to close the gap, and both ends are moved in the front-rear direction while being supported by each support body. Thus, it is possible to prevent damage due to interference with each support body and each floor portion of the cover body, and to allow the relative displacement in the front-rear direction of each floor portion smoothly.
[0049]
  further,Since the axial hole of the lattice structure, the long hole of the through member, and the insertion hole of each link member are formed, the mounting work of the connecting pin can be performed from above the lattice structure, easily with high accuracy, The connecting pin can connect the center maintaining means, the threading member, and the lattice structure, thereby improving workability. In addition, since a long hole is formed in the through member, an error caused by a shift in the mounting position of each central maintaining means is allowed with the connecting pin attached, and the displacement of the cover body is reliably transmitted to the central maintaining means.can do.
[0050]
According to the second aspect of the present invention, the cover body is provided with the inspection opening, and the inspection opening is provided with the lid so as to be detachable. To do this, move the lid from the inspection opening to open the inspection opening, easily insert the operator's hand and work tool into the gap from the outside, take out the dust, Predetermined operations such as attachment and removal can be performed.
[Brief description of the drawings]
FIG. 1 is a vertical sectional view showing a configuration at a position where a central maintaining means 11 of a floor expansion joint device 1 according to an embodiment of the present invention is provided, and a cross section seen from a section line II in FIG. Indicates.
2 is a vertical cross-sectional view showing a configuration of the floor expansion joint device 1 shown in FIG. 1 at a position where an inspection opening 16 is provided, and shows a cross section seen from the section line II-II in FIG. 3; .
FIG. 3 is a plan view in which a part of the floor expansion joint device 1 as viewed from above is cut away.
4 is an enlarged cross-sectional view of the vicinity of one end portion 10a of the center maintaining means 11. FIG.
FIG. 5 is an enlarged cross-sectional view of a part of the cover body 14 as viewed from a cutting plane line III-III in FIG. 3;
6 is an enlarged cross-sectional view of the vicinity of the other end portion 10b of the center maintaining means 11. FIG.
7 is an enlarged cross-sectional view of the vicinity of the center portions 10c and 12c of the cover body 14 and the center maintaining means 11. FIG.
FIG. 8 is a plan view of the vicinity of a connecting pin 15 as viewed from above.
[Explanation of symbols]
1 Expansion joint device for floor
2 gap
3a, 3b Floor part
4a, 4b Opposite wall
5a, 5b support
6a, 6b end
7 Mounting aids
8 Guide rail
9 Link members
10a, 10b Both ends of the central maintaining means 11
11 Central maintenance means
12a, 12b Both ends of the cover body 14
13 Lattice structure
14 Cover body
15 Connecting pin
16 Inspection opening
17 Lid
21a, 21b Floor
22a, 22b recess
27a, 27b frame
28a, 28b Information board
30a, 30b support part
34a, 34b Guide section
52a, 52b parting cover material
53a, 53b Mounting piece
54a, 54b Ball caster

Claims (2)

A support that is fixed in parallel and substantially horizontally to each of the opposing wall portions of the two floor portions adjacent to each other with a gap therebetween;
An attachment auxiliary member that extends in parallel with one support and is fixed to an end of the one support that is closer to the other support;
A guide rail that extends parallel to the other support and is fixed to an opposing wall provided with the other support;
A pantograph-like link mechanism is formed in which a plurality of link members intersect at the center between both ends, and one end is connected to the mounting auxiliary member so as to be rotatable about a substantially vertical axis, and the other end is guided. A plurality of central maintaining means movably supported on the rail;
A cover body having a lattice-like structure in which both end portions are supported by each support body and the central portion is connected to each center maintaining means;
A connecting pin that is detachably attached to the cover body and each central maintaining means, and that couples the cover body and each central maintaining means;
It is movably mounted on the guide rail, seen including a sliding member to which the other end portion of each central maintaining means is pivotally connected about a substantially vertical axis,
An insertion hole through which the shaft portion of the connecting pin is inserted is formed at the intersection of each link member,
A passing member in which an elongated hole extending in the longitudinal direction of the threading member is formed on the crossing portion of each link member so as to extend between a plurality of central maintaining means and coincide with a position where the insertion hole is formed. Is provided,
A lattice-like structure in which a shaft hole through which the shaft portion of the connecting pin is inserted is fixed to the threading member,
The connecting pin is mounted in a state where the shaft portion thereof is inserted through the shaft hole of the lattice-like structure, the long hole of the through member, and the insertion hole of each link member, floor expansion joints apparatus characterized by but is connected.   The floor expansion joint device according to claim 1, wherein an inspection opening is provided in the cover body, and a lid is detachably provided in the inspection opening.

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