Reinforcing bar frame support and reinforcing bar frame set

Abstract

To provide a reinforcing bar frame support and a reinforcing bar frame set that improve work efficiency.SOLUTION: A reinforcing bar frame support 5 includes a base portion 51, an extension portion 53, and a recess. The base portion 51 has a bottom surface. The extension portion 53 extends from the base portion 51 in a first direction perpendicular to the bottom surface. The recess is recessed from the end of the extension portion 53 on the first direction side toward a second direction that is the opposite direction to the first direction. A column portion 13 of a frame member 12 capable of supporting reinforcing bars can be inserted into the recess.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a reinforcing bar frame support and a reinforcing bar frame set for forming underground beams and the like. [Background technology]

[0002] Conventionally, reinforced concrete frames supporting reinforcing bars have been used to form reinforced concrete beams (hereinafter referred to as underground beams) built underground to support buildings. When a reinforced concrete frame is used, a base plate is fixed to so-called basin concrete. The reinforced concrete frame and the reinforced concrete frame itself are then buried in concrete to form an underground beam. For example, the reinforced concrete frame described in Patent Document 1 includes a support with a base plate, a lower support member, and an upper support member. The base plate is fixed to the lower end of the support by welding or other means. The reinforced concrete frame is used with the base plate fixed to the basin concrete or the like with anchor bolts or the like. The reinforced concrete frame is arranged by arranging reinforcing bars in the lower support member and the upper support member of multiple reinforced concrete frames. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Jpn. Published Application No. 6-56348 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional reinforced concrete gantry, the base plate is fixed to the lower end of the support by means such as welding. Therefore, when transporting the reinforced concrete gantry to the installation site, the entire reinforced concrete gantry, including the base plate, needs to be transported. Therefore, the number of base plates required for transportation by one transport vehicle is small. Therefore, for example, when transporting reinforced concrete gantry using one transport vehicle, it is necessary to make multiple trips between the storage location of the reinforced concrete gantry and the installation site. Therefore, when workers install reinforced concrete gantry at the installation site, they need to wait for all reinforced concrete gantry units to arrive, which can make work inefficient.

[0005] An object of the present invention is to provide a reinforcing bar stand support and a reinforcing bar stand set that improve work efficiency. [Means for solving the problem]

[0006] A reinforcing bar gantry support according to a first aspect of the present invention includes a base portion having a bottom surface, an extension portion extending from the base portion in a first direction perpendicular to the bottom surface, and a recessed portion recessed from the end of the extension portion in the first direction toward a second direction opposite the first direction, into which a column portion of a gantry member capable of supporting reinforcing bars can be inserted. In this case, the gantry member and the reinforcing bar gantry support are separated from each other before the column portion of the gantry member is inserted into the recessed portion. This allows only the reinforcing bar gantry support to be transported to the installation site and installed in the dummy concrete. This allows a larger number of reinforcing bar gantry support devices to be transported at one time than in the conventional case where the entire reinforcing bar gantry, including the base plate for installation in the dummy concrete, is transported. This allows workers to install a larger number of reinforcing bar gantry support devices at the installation site even before the gantry members arrive. After the gantry members arrive, the column portion of the gantry member can be inserted into the recessed portion of the reinforcing bar gantry support to complete the reinforcing bar gantry set. Therefore, workers do not need to wait for the arrival of all the reinforcing bar frames including the base plates before starting work, which improves work efficiency.

[0007] The reinforcing bar gantry support may be made of synthetic resin. Conventionally, depending on the installation site of the reinforcing bar gantry, the base plate may need to be treated with anti-rust. For this reason, conventional reinforcing bar gantry requires anti-corrosion treatment, which increases costs. Since the reinforcing bar gantry support of the present invention is made of synthetic resin, anti-rust treatment is not required. Therefore, no anti-corrosion treatment is required, and costs can be reduced.

[0008] The reinforcing bar gantry support may include a space forming portion provided on the extension portion, which forms a space into which a fixing member capable of fixing the column portion can be inserted toward the recess. In this case, since the space forming portion is provided, the fixing member can be inserted from the space forming portion toward the recess. Therefore, the gantry member can be more reliably fixed to the recess by the fixing member.

[0009] In the reinforcing bar cradle support, the extension portion may include a first portion extending in a third direction parallel to the bottom surface, and a second portion extending from an end of the first portion in the third direction in a fourth direction parallel to the bottom surface and perpendicular to the third direction. In this case, the extension portion and the recess are L-shaped in a plan view. Therefore, a cradle member having an L-shaped column can be inserted into the recess and used. Therefore, the strength of the cradle member is greater than, for example, when using a cradle member having a plate-shaped column in only one direction.

[0010] In the reinforcing bar gantry support, the space-forming portion may be provided at a connection portion where the first portion and the second portion are connected. In this case, since the space-forming portion is formed at the connection portion where the first portion and the second portion are connected, a fixing member can be inserted into the portion of the recess where the first portion and the second portion are connected. Therefore, the fixing member can be used to press the bent portion formed by the two plate portions that form the L-shaped column portion of the gantry member, thereby fixing the gantry member to the reinforcing bar gantry support. Therefore, the gantry member is less likely to shift relative to the reinforcing bar gantry support compared to when the fixing member presses only one plate portion of the column portion of the gantry member. Therefore, the gantry member can hold the reinforcing bar in a more accurate position.

[0011] In the reinforcing bar cradle support, the fixing member may be a bolt, the space forming portion may include a nut support portion that protrudes parallel to the bottom surface at the connecting portion and that can insert and support a nut, and the bolt may be inserted into the recess via the nut supported by the nut support portion. In this case, since the nut support portion is provided in the reinforcing bar cradle support, costs can be reduced compared to when a separate member for supporting the nut is provided.

[0012] In the reinforcing bar cradle support, the base portion may include a base hole that is a hole provided on the second direction side of the nut support portion. In this case, when the reinforcing bar cradle support is embedded in concrete, the newly poured concrete connects with the basal concrete to which the base portion is fixed via the base hole. Therefore, the reinforcing bar cradle support is more firmly fixed in the concrete than when the base hole is not provided.

[0013] In the reinforcing bar cradle support, a first distance between an end of the first portion opposite the second portion and an end of the second portion opposite the first portion may be greater than a second distance, which is the length of the extension portion in the first direction. In this case, the length of the first portion of the extension portion in the third direction and the length of the second portion in the fourth direction are greater than when the first distance is equal to or less than the second distance. Therefore, a cradle member in which the lengths in the third direction and the lengths in the fourth direction of the two plate portions forming the L-shaped column portion are greater can be inserted into the recess. This increases the strength of the cradle member.

[0014] In the reinforcing bar cradle support, the circular region in which the shank of the bolt inserted into the nut supported by the nut support portion is disposed may include the center point of the extension portion in the first direction. In this case, the shank of the bolt is disposed at the center of the extension portion in the first direction. Therefore, compared to when the shank of the bolt is disposed at the end of the extension portion in the first direction or the end of the extension portion opposite to the first direction, the possibility of so-called rattle occurring in the column portion of the cradle member is reduced. Therefore, the position of the cradle member is stabilized.

[0015] In the reinforcing bar gantry support, when the shortest distance between the outer periphery of the base portion and the extension portion is defined as a third distance, the second distance may be greater than the third distance. In this case, the length of the extension portion in the first direction is greater than when the second distance is equal to or less than the third distance. Therefore, the length of the extension portion supporting the column portion of the gantry member is increased, and the position of the gantry member is stabilized.

[0016] A second aspect of the present invention provides a reinforcing bar gantry set comprising a gantry member capable of supporting reinforcing bars and a reinforcing bar gantry support capable of supporting the gantry member. The reinforcing bar gantry support comprises a base having a bottom surface, an extension extending from the base in a first direction perpendicular to the bottom surface, and a recess recessed from the end of the extension in the first direction toward a second direction opposite the first direction, into which a column of the gantry member can be inserted. The gantry member also comprises a column extending in the first direction, insertable into the recess, and a reinforcing bar receiving portion capable of supporting the reinforcing bar. In this case, the gantry member and the reinforcing bar gantry support are separated from each other before the column of the gantry member is inserted into the recess. Therefore, only the reinforcing bar gantry support can be transported to the installation site and installed in the dummy concrete. This allows a larger number of reinforcing bar gantry supports to be transported at one time than conventional methods of transporting an entire reinforcing bar gantry, including an integrated base plate for installation in the dummy concrete. Therefore, even if the rack components have not yet arrived, workers can install a larger number of reinforcing bar rack supports at the installation site. After the rack components arrive, the columns of the rack components can be inserted into the recesses of the reinforcing bar rack supports to complete the reinforcing bar rack set. This eliminates the need for workers to wait for the arrival of all the reinforcing bar racks, including the base plates, before starting work, improving work efficiency. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 2 is a front view of the reinforcing bar stand set 1 installed in the temporary concrete 100. [Figure 2] FIG. 2 is a front view of the reinforcing bar stand set 1 in a state where the stand member 12 and the reinforcing bar stand support 5 are separated. [Figure 3] FIG. 10 is a front view of the reinforcing bar stand support 5 without nuts 595 and bolts 59 attached. [Figure 4] FIG. 10 is a plan view of the reinforcing bar stand support 5 without nuts 595 and bolts 59 attached. [Figure 5] FIG. 10 is a perspective view of the reinforcing bar stand support 5 without nuts 595 and bolts 59 attached. [Figure 6] 10 is a bottom view of the reinforcing bar stand support 5 without nuts 595 and bolts 59 attached. FIG. [Figure 7] FIG. 2 is a perspective view of the reinforcing bar stand support 5 from the bottom surface 516 side. [Figure 8] FIG. 2 is a left side view of the reinforcing bar frame support 5. [Figure 9] FIG. 10 is a front view of the reinforcing bar stand support 5 with the nut 595 and bolt 59 attached. [Figure 10] FIG. 10 is a plan view of the reinforcing bar stand support 5 with nuts 595 and bolts 59 attached. [Figure 11] FIG. 10 is a perspective view of the reinforcing bar stand support 5 with a nut 595 and a bolt 59 attached. [Figure 12] FIG. 11 is a partial enlarged view of a circular area 82 in FIG. 10. [Figure 13] FIG. 10 is a front view of a reinforcing bar stand set 1A according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0018] A reinforcing bar trestle set 1 and a reinforcing bar trestle support 5 embodying the present invention will be described below with reference to the drawings. In the following description, the upper, lower, left, right, front, and rear sides of the paper in FIG. 1 will be referred to as the upper, lower, left, right, front, and rear sides of the reinforcing bar trestle set 1 and the reinforcing bar trestle support 5. The upward direction of the reinforcing bar trestle support 5 may be referred to as the first direction. As shown in FIG. 1, the reinforcing bar trestle set 1 includes a reinforcing bar trestle support 5 and a support member 12. As shown in FIG. 2, in the reinforcing bar trestle set 1, the reinforcing bar trestle support 5 and the support member 12 are separable.

[0019] The reinforcing bar gantry support 5 is a member that detachably supports the gantry member 12. The reinforcing bar gantry support 5 is made of synthetic resin. As shown in FIGS. 3 and 4, the reinforcing bar gantry support 5 includes a base portion 51 and an extension portion 53. As shown in FIG. 4, the base portion 51 is plate-shaped and has a substantially triangular appearance in a plan view. The top surface 515 and bottom surface 516 (see FIG. 6) of the base portion 51 are flat surfaces extending in the front-rear and left-right directions. The left end portion 511 and right end portion 512 of the base portion 51 are rounded. The rear end portion 513 of the base portion 51 protrudes rearward in a substantially semicircular shape. A downward-protruding rib 517 (see FIGS. 6 and 7) is provided on the outer periphery of the bottom surface 516.

[0020] A hole 521 is provided in the left front portion of the base portion 51. A hole 522 is provided in the right front portion of the base portion 51. A hole 523 is provided in the rear portion of the base portion 51. A hole 524 is provided in the front portion of the base portion 51. When a reinforcing bar frame support 5 is used, the shafts 901 (see FIG. 1 ) of anchor bolts 90 for fixing the reinforcing bar frame support 5 to the basing concrete 100 are placed in the holes 521, 522, 523, and 524.

[0021] As shown in FIGS. 3 to 5, the extension portion 53 is provided in the center of the base portion 51 in a plan view. The extension portion 53 extends from the base portion 51 in a first direction (i.e., upward) perpendicular to a bottom surface 516 (see FIG. 6) of the base portion 51. As shown in FIGS. 4 and 5, the extension portion 53 has a recess 531. The recess 531 is recessed from the end of the extension portion 53 on the first direction side toward a second direction (i.e., downward) that is the opposite direction to the first direction. The vertical position of the lower surface of the recess 531 (i.e., the lower end of the recess 531) is the same as the vertical position of the upper surface 515 of the base portion 51. The recess 531 is a portion into which the column portion 13 (see FIGS. 1 and 2) of the mounting member 12 can be inserted.

[0022] The extension portion 53 will be described in more detail. The extension portion 53 includes a first portion 54 and a second portion 55. As shown in Fig. 4, the first portion 54 extends in a third direction (in the present embodiment, a right-rear direction) that is a direction parallel to the bottom surface 516. The second portion 55 extends from an end of the first portion 54 in the third direction in a fourth direction (in the present embodiment, a right-front direction) that is a direction parallel to the bottom surface 516 and perpendicular to the third direction.

[0023] A space forming portion 57 (see FIGS. 3 and 4) is provided at a connection portion 533 (see FIG. 3) where the first portion 54 and the second portion 55 are connected. The space forming portion 57 is a portion that forms a space into which a bolt 59 can be inserted from the outside of the extension portion 53 toward the recessed portion 531. The bolt 59 is a fixing member that can fix the column portion 13 of the mounting member 12 when inserted into the recessed portion 531 (see FIGS. 10 and 12). In this embodiment, the bolt 59 and the nut 595 are made of metal.

[0024] As shown in FIG. 4 , the first portion 54 includes a rear wall portion 541, a front wall portion 542, and a left wall portion 543. The second portion 55 includes a rear wall portion 551, a front wall portion 552, and a right wall portion 553. The rear wall portion 541 of the first portion 54 is a wall portion that forms a rear portion of the first portion 54 and extends in the third direction. The left wall portion 543 is connected to the left end of the rear wall portion 541. The left wall portion 543 is a wall portion that forms a left portion of the first portion 54 and extends in the right-front direction. The front wall portion 542 is connected to the front end of the left wall portion 543. The front wall portion 542 is a wall portion that forms a front portion of the first portion 54 and extends in the third direction.

[0025] The rear wall portion 551 of the second portion 55 is connected to the right end of the rear wall portion 541 of the first portion 54. The rear wall portion 551 is a wall portion that forms the rear portion of the second portion 55 and extends in the fourth direction. The right wall portion 553 is connected to the right end of the rear wall portion 551. The right wall portion 553 is a wall portion that forms the right portion of the second portion 55 and extends in the left-front direction. The front wall portion 552 is connected to the front end of the right wall portion 553. The front wall portion 552 is a wall that forms the front portion of the second portion 55 and extends in the direction opposite to the fourth direction.

[0026] The lower right end of the front wall portion 542 of the first portion 54 is connected to the lower left end of the front wall portion 552 of the second portion 55 (see FIG. 3). The space forming portion 57 is provided between the upper portions of the front wall portions 542 and 552.

[0027] The space forming portion 57 is provided in the connection portion 533 where the first portion 54 and the second portion 55 are connected. More specifically, the space forming portion 57 is provided in a concave shape extending downward from the upper end of the extension portion 53 (see FIGS. 3 and 5). The rear portion of the space forming portion 57 is formed by the upper portion of the front wall portion 542 of the first portion 54 and the upper portion of the front wall portion 552 of the second portion 55 (see FIG. 5).

[0028] The space forming portion 57 is provided with a nut support portion 571 into which a nut 595 can be inserted and which can support the nut 595. The nut support portion 571 protrudes from the connecting portion 533 in a direction parallel to the bottom surface 516 of the base portion 51 (forward in this embodiment). As shown in FIG. 5, a right wall portion 571A and a left wall portion 571B of the nut support portion 571 extend downward from the same height as the upper end of the extension portion 53. A lower wall portion 571C of the nut support portion 571 is connected to the lower end of the right wall portion 571A and the lower end of the left wall portion 571B.

[0029] The inner surface of the nut support portion 571 is provided with a support recess 572, which is a recess. The support recess 572 is formed in the right wall portion 571A, the left wall portion 571B, and the bottom wall portion 571C of the nut support portion 571. The bottom wall portion 571C is provided with a through-hole 573 that penetrates in the up-down direction (see FIGS. 4 and 6). When a nut 595 (see FIGS. 10 and 12) is inserted into the nut support portion 571, the nut 595 is inserted downward along the support recess 572 from above and is supported by the lower end of the support recess 572. Although not shown, one corner of the hexagonal nut 595 is positioned inside the through-hole 573. As will be described later, the bolt 59 can be inserted toward the recess 531 of the extension portion 53 via the nut 595 supported by the nut support portion 571.

[0030] As shown in Figure 9, a circular area 592 in which the shaft portion 591 (see Figure 12) of the bolt 59 inserted into the nut 595 (see Figures 10 and 12) supported by the nut support portion 571 is disposed includes a center point 991 of the extension portion 53 in the first direction (i.e., the midpoint of the line segment connecting the end of the extension portion 53 in the first direction and the end of the extension portion 53 in the second direction).

[0031] As shown in Figures 5, 6, and 7, the base portion 51 has a base hole 519, which is a hole provided on the second direction side of the nut support portion 571. The base hole 519 is a hole that penetrates the base portion 51 in the up-down direction. The rear portion of the base hole 519 is formed along the lower end of the extension portion 53. The left and right ends of the base hole 519 extend forward from the rear portion of the base hole 519. The front portion of the base hole 519 extends in the left-right direction. As shown in Figures 4 and 6, the shape of the base hole 519 in a bottom view and the outer shape of the nut support portion 571 in a bottom view are the same shape.

[0032] 3, the end of first region 54 opposite second region 55 is referred to as left end 549. The end of second region 55 opposite first region 54 is referred to as right end 559. The distance between left end 549 and right end 559 is referred to as first distance L1. The length of extension portion 53 in the first direction is referred to as second distance L2. First distance L1 is greater than second distance L2.

[0033] 4, the shortest distance between the outer periphery of the base portion 51 and the extension portion 53 is referred to as a third distance L3. In the present embodiment, as an example, the third distance L3 is the distance between the left rear portion of the base portion 51 and the first region 54. The second distance L2 (see FIG. 3) is greater than the third distance L3.

[0034] 4 and 5, a rib 601 is provided facing forward from the left front portion of the first portion 54. A rib 602 is provided facing forward from the right front portion of the second portion 55. The ribs 601 and 602 are inclined so that they are positioned lower as they move forward.

[0035] As shown in Figures 4, 5, and 8, a rib 603 is provided from the rear wall 541 of the first section 54 toward the left rear. A rib 604 is provided from the rear wall 551 of the second section 55 toward the right rear (see Figure 4). The upper ends of the front portions of the ribs 603 and 604 are parallel to the bottom surface 516 (see Figure 6) of the base section 51 (see Figures 5 and 8). The upper end of the rear portion of the rib 603 is inclined so that it is positioned lower as it moves toward the left rear. The upper end of the rear portion of the rib 604 is inclined so that it is positioned lower as it moves toward the right rear.

[0036] As shown in FIGS. 1 and 2, the frame member 12 includes a pillar portion 13 and a reinforcing bar support portion 14. The frame member 12 is made of, for example, metal (e.g., iron). The pillar portion 13 extends in a first direction. The pillar portion 13 is a portion that can be inserted into a recess 531 (see FIG. 4) of the reinforcing bar frame support 5 (see arrow 89 in FIG. 2). The pillar portion 13 is L-shaped in a plan view. More specifically, the pillar portion 13 includes a first plate portion 131 and a second plate portion 132. The first plate portion 131 extends to the rear right. The second plate portion 132 is connected to the rear right end of the first plate portion 131 and extends to the front right.

[0037] A fixing bracket 15 is provided on the upper part of the column portion 13. The fixing bracket 15 is a member that fixes the vertical position of the reinforcing bar support portion 14. The reinforcing bar support portion 14 includes a position-adjusting reinforcing bar portion 141 and a reinforcing bar receiving portion 142. The position-adjusting reinforcing bar portion 141 is a cylindrical reinforcing bar that is long in the vertical direction. The reinforcing bar receiving portion 142 is provided on the first direction side of the column portion 13. More specifically, the reinforcing bar receiving portion 142 is fixed to the upper end of the position-adjusting reinforcing bar portion 141. The reinforcing bar receiving portion 142 is a member that is long in the left-right direction, and its upper end is a flat portion. The reinforcing bar receiving portion 142 is a portion that can support a reinforcing bar 97 used for underground beams, etc. The reinforcing bar 97 shown in FIG. 1 is a cylindrical reinforcing bar that extends in the front-to-rear direction.

[0038] The fixing bracket 15 is equipped with an adjustment bolt 151. By turning the adjustment bolt 151, the fixing bracket 15 is tightened or loosened relative to the column portion 13. When the fixing bracket 15 is loosened, the position-adjusting rebar portion 141 of the rebar support portion 14 becomes movable in the vertical direction relative to the column portion 13. This makes the rebar support portion 14 movable in the vertical direction. When the position-adjusting rebar portion 141 is tightened, the vertical position of the position-adjusting rebar portion 141 is fixed. This fixes the vertical position of the rebar support portion 14.

[0039] A method of using the reinforcing bar stand set 1 will be described. Note that FIG. 12 is an enlarged view of the area 82 indicated by the circular solid line in FIG. 10. As shown in FIGS. 10 and 12, the nut 595 is inserted from above downward into the nut support portion 571 of the reinforcing bar stand support 5. As shown in FIG. 12, opposing surfaces 595A and 595B on the outer periphery of the hexagonal nut 595 move downward along the support recess 572 of the nut support portion 571. The nut 595 is sandwiched between the right wall portion 571A and the left wall portion 571B of the nut support portion 571 and supported by the lower wall portion 571C (see FIG. 9). Although not shown, at this time, one corner of the nut 595 is placed in the through-hole 573 (see FIG. 6).

[0040] The shaft 591 of the bolt 59 is inserted into the nut 595 supported by the nut support portion 571. Although not shown, at this time, the bolt 59 is set in a loosened state with respect to the nut 595 so that the column portion 13 of the frame member 12 can be inserted into the recess 531 of the extension portion 53. Therefore, the head 593 of the bolt 59 is positioned further forward than the position shown in FIG.

[0041] As shown in FIG. 1 , the reinforcing bar frame support 5 is placed on the basing concrete 100. The shaft 901 of the anchor bolt 90 is inserted through the holes 521, 522, 523, and 524 (see FIGS. 10 and 11 ) and driven into the basing concrete 100. The base 51 is sandwiched between the head 902 of the anchor bolt 90 and the basing concrete 100. This fixes the reinforcing bar frame support 5 on the basing concrete 100.

[0042] Next, the lower end of the column 13 of the frame member 12 is inserted downward into the recess 531 of the extension portion 53 (see arrow 89 in FIG. 2 ). Note that the illustration of the basal concrete 100 and the anchor bolt 90 is omitted in FIG. 2 . The bolt 59 is rotated to tighten the nut 595 supported by the nut support portion 571. As a result, as shown in FIGS. 10 and 12 , the rear end of the shaft 591 of the bolt 59 pushes the column 13 of the frame member 12 rearward. Therefore, the column 13 is sandwiched between the rear end of the shaft 591 of the bolt 59 and the rear wall portions 541, 551 of the recess 531. In this way, the frame member 12 is fixed to the reinforcing bar frame support 5. Note that the column 13 is indicated by dotted lines in FIGS. 10 and 12 .

[0043] 1, the adjustment bolts 151 of the fixing brackets 15 are loosened, and the vertical position of the reinforcing bar support parts 14 is adjusted (see arrow 87). The adjustment bolts 151 are tightened, and the position of the reinforcing bar support parts 14 is fixed, thereby fixing the position of the reinforcing bar receiving parts 142. This brings one reinforcing bar stand set 1 into a state where it is installed at the installation site.

[0044] Similarly, a plurality of other reinforcing bar trestle sets 1 are placed at the work site. Reinforcing bars 97 to be used for underground beams or the like are placed above the reinforcing bar receiving portions 142 of the plurality of reinforcing bar trestle sets 1. In FIG. 1, as an example, two reinforcing bars 97 are placed above the reinforcing bar receiving portions 142. Concrete is poured toward the plurality of reinforcing bar trestle sets 1 and the reinforcing bars 97, and the concrete is allowed to harden. In this way, underground beams or the like are formed.

[0045] As described above, the reinforcing bar gantry set 1 of this embodiment is formed. In this embodiment, the reinforcing bar gantry support 5 is provided with a recess 531 (see FIGS. 4 and 10 ) into which the column portion 13 of the gantry member 12 can be inserted. Before the column portion 13 of the gantry member 12 is inserted into the recess 531, the gantry member 12 and the reinforcing bar gantry support 5 are separated from each other. Therefore, only the reinforcing bar gantry support 5 can be transported to the installation site and installed in the basing concrete 100. Therefore, a larger number of reinforcing bar gantry support devices 5 can be transported at one time compared to the conventional case in which the entire reinforcing bar gantry, including the base plate for installation in the basing concrete 100, is transported to the installation site. Therefore, even if the gantry members 12 have not yet arrived, workers can install a larger number of reinforcing bar gantry support devices 5 at the installation site. After the gantry members 12 arrive, the column portion 13 of the gantry member 12 can be inserted into the recess 531 of the reinforcing bar gantry support 5 to complete the reinforcing bar gantry set 1. Therefore, workers do not need to wait for the arrival of all the reinforcing bar frames including the base plates before starting work, which improves work efficiency.

[0046] Furthermore, the reinforcing bar gantry support 5 is made of synthetic resin. Conventionally, depending on the installation site of the reinforcing bar gantry, it has been necessary to perform anti-rust treatment on the base plate. For this reason, conventional reinforcing bar gantry requires anti-corrosion treatment work, which increases costs. Since the reinforcing bar gantry support 5 of this embodiment is made of synthetic resin, anti-rust treatment is not required. Therefore, work for anti-corrosion treatment is not required, and costs can be reduced.

[0047] Furthermore, the reinforcing bar frame support 5 has a space forming portion 57. Therefore, a bolt 59, which is a fixing member, can be inserted from the space forming portion 57 toward the recess 531. This allows the frame member 12 to be fixed to the recess 531 more reliably by the bolt 59.

[0048] The extension portion 53 also includes a first portion 54 extending in the third direction and a second portion 55 extending in a fourth direction parallel to the bottom surface 516 and perpendicular to the third direction. In this case, the extension portion 53 and the recess 531 are L-shaped in a plan view. Therefore, a mounting member 12 having an L-shaped pillar portion 13 can be inserted into the recess 531 and used. This increases the strength of the mounting member 12 compared to, for example, a mounting member having a plate-shaped pillar portion in only one direction. Furthermore, as will be described later, the size of the pillar portion 13 in the third direction and the fourth direction can be changed depending on, for example, the weight of the reinforcing bar 97 (see pillar portion 13 in FIG. 1 and pillar portion 13A in FIG. 13).

[0049] Furthermore, the space forming portion 57 is provided at the connection portion 533 where the first portion 54 and the second portion 55 are connected. Therefore, a bolt 59, which is a fixing member, can be inserted into the portion of the recess 531 where the first portion 54 and the second portion 55 are connected. Therefore, at the bent portion 133 formed by the first plate portion 131 and the second plate portion 132, which are two plate portions that form the L-shaped column portion 13 of the frame member 12, the frame member 12 can be fixed to the reinforcing bar frame support 5 by pressing both the first plate portion 131 and the second plate portion 132 with the bolt 59 (see FIG. 12 ). Therefore, the frame member 12 is less likely to shift relative to the reinforcing bar frame support 5 than when only one plate portion of the column portion 13 of the frame member 12 is pressed with a bolt. Therefore, the frame member 12 can hold the reinforcing bar 97 in a more accurate position.

[0050] Furthermore, the reinforcing bar stand support 5 is provided with a nut support portion 571. This allows for cost reduction compared to when a separate member for supporting the nut 595 is provided.

[0051] The base portion 51 also has a base hole 519, which is a hole provided on the second direction side of the nut support portion 571 (see FIGS. 5, 7, and 11). Therefore, when the reinforcing bar frame support 5 is buried in concrete, the newly poured concrete connects with the basing concrete 100 to which the base portion 51 is fixed via the base hole 519. Therefore, the reinforcing bar frame support 5 is more firmly fixed in the concrete than when the base hole 519 is not provided.

[0052] Furthermore, the first distance L1 is greater than the second distance L2 (see FIG. 3). Therefore, the length in the third direction of the first portion 54 of the extension portion 53 and the length in the fourth direction of the second portion 55 are greater than when the first distance L1 is equal to or less than the second distance L2. Therefore, a mounting member 12 in which the lengths in the third direction and the lengths in the fourth direction of the first plate portion 131 and the second plate portion 132, which are two plate portions forming the L-shaped column portion 13, are greater, can be inserted into the recess 531. Therefore, the strength of the mounting member 12 can be increased.

[0053] Furthermore, the circular region 592 in which the shank 591 of the bolt 59 is disposed includes a center point 991 of the extension portion 53 in the first direction (see FIG. 9). In this case, the shank 591 of the bolt 59 is disposed in the center portion of the extension portion 53 in the first direction. Therefore, compared to when the shank 591 of the bolt 59 is disposed at the end portion of the extension portion 53 in the first direction or the end portion of the extension portion 53 on the opposite side in the first direction, there is a lower possibility that so-called rattle will occur in the column portion 13 of the frame member 12. Therefore, the position of the frame member 12 is stabilized.

[0054] Furthermore, the second distance L2 is greater than the third distance L3 (see FIGS. 3 and 4). In this case, the length of the extension portion 53 in the first direction is greater than when the second distance L2 is equal to or less than the third distance L3. Therefore, the length of the extension portion 53 supporting the column portion 13 of the mount member 12 is increased, and the position of the mount member 12 is stabilized.

[0055] As described above, the reinforcing bar stand set 1 and the reinforcing bar stand support 5 in this embodiment are formed. In this embodiment, the bolt 59 is an example of the "fixing member" in the present invention.

[0056] The present invention is not limited to the above embodiment and various modifications are possible. For example, although the second distance L2 is greater than the third distance L3 (see FIGS. 3 and 4), the present invention is not limited to this. For example, the second distance L2 may be equal to or less than the third distance L3. Furthermore, although the circular region 592 in which the shank 591 of the bolt 59 is disposed includes the center point 991 of the extension portion 53 in the first direction, the present invention is not limited to this. For example, the length of the extension portion 53 in the first direction and the position of the nut support portion 571 in the first direction may be set so that the position of the center point 991 is outside the region 592.

[0057] Furthermore, although the first distance L1 is greater than the second distance L2 (see FIG. 3), this is not limiting. For example, the first distance L1 may be equal to or less than the second distance L2. Furthermore, although the base hole 519 (see FIGS. 5 and 7) is provided, this is not limiting. For example, the base hole 519 does not have to be provided in the base portion 51.

[0058] Although the nut support portion 571 is provided on the reinforcing bar frame support 5, this is not limiting. For example, a member for supporting the nut 595 may be separately provided without providing the nut support portion 571. Furthermore, the space forming portion 57 is provided at the connection portion 533 where the first portion 54 and the second portion 55 are connected, but this is not limiting. For example, the space forming portion 57 may be provided at a portion of the extension portion 53 other than the connection portion 533. Furthermore, the shape of the space forming portion 57 is not limited to this embodiment. For example, the space forming portion 57 may be a circular hole provided in the extension portion 53 toward the recess 531. In this case, the bolt 59 may be inserted through the hole.

[0059] Furthermore, the fixing member capable of fixing the column portion 13 is the bolt 59 in the above embodiment, but is not limited to this. For example, the fixing member may be a member that can be press-fitted toward the recess 531. For example, the space forming portion 57 may be formed as a circular hole provided in the extension portion 53 toward the recess 531. The fixing member may then be a member having a cylindrical portion. The cylindrical portion of the fixing member may then be press-fitted into the hole that is the space forming portion 57, and the column portion 13 may be pressed by the cylindrical portion to fix the column portion 13 to the recess.

[0060] Furthermore, although the extension portion 53 includes the first portion 54 extending in the third direction and the second portion 55 extending in a fourth direction parallel to the bottom surface 516 and perpendicular to the third direction, the present invention is not limited to this. The shape of the extension portion 53 may be other shapes. For example, the extension portion 53 may be cylindrical and extend in the first direction. In this case, the inside of the cylindrical extension portion 53 forms a recess 531. In this case, the pillar portion 13 of the mounting member 12 is made cylindrical. The pillar portion 13 is detachably attached to the recess 531 of the cylindrical extension portion 53. The extension portion 53 may also extend in only one direction parallel to the bottom surface 516. In this case, the pillar portion 13 of the mounting member 12 may be made plate-shaped so that the pillar portion 13 is detachably attached to the recess 531.

[0061] Furthermore, although the space forming portion 57 is provided in the embodiment, the present invention is not limited to this. For example, the space forming portion 57 may not be provided, and the bolt 59 may not be able to be inserted into the recess 531. In this case, the size of the recess 531 (for example, the size in the front-rear direction) is formed to match the size of the pillar portion 13 of the mounting member 12 (for example, the thickness in the front-rear direction). In this case, the pillar portion 13 is sandwiched between the front wall portions 542, 552 and the rear wall portions 541, 551 of the recess 531, and thus the mounting member 12 is supported by the reinforcing bar mounting support 5.

[0062] Furthermore, although the pillar portion 13 of the frame member 12 is detachable from the reinforcing bar frame support 5, the present invention is not limited to this. For example, it is only necessary that the pillar portion 13 of the frame member 12 is insertable into the recess 531 of the reinforcing bar frame support 5, and the reinforcing bar frame support portion 5 and the pillar portion 13 do not have to be separable. For example, the pillar portion 13 may be press-fitted into the recess 531 of the reinforcing bar frame support 5. In this case, once the pillar portion 13 is press-fitted into the recess 531, the reinforcing bar frame support portion 5 and the pillar portion 13 do not have to be separable.

[0063] Furthermore, although the bolts 59 and nuts 595 are made of metal in the above embodiment, the present invention is not limited to this and the bolts 59 and nuts 595 may be made of synthetic resin.

[0064] Furthermore, although the reinforcing bar gantry support 5 is made of synthetic resin, this is not a limitation. For example, the reinforcing bar gantry support 5 may be made of metal. Furthermore, although the upper surface 515 of the base portion 51 is flat, this is not a limitation. The upper part of the base portion 51 does not have to be flat. Furthermore, although no ribs are provided on any part other than the outer periphery of the bottom surface 516 of the base portion 51, this is not a limitation. For example, ribs having a lattice shape in a bottom view may be provided so as to protrude downward from the bottom surface 516. The downward length of the ribs may be the same as the ribs 517. Furthermore, although the ribs 517 protruding downward are provided on the outer periphery of the bottom surface 516 of the base portion 51, this is not a limitation. For example, the ribs 517 may not be provided.

[0065] Furthermore, the shape of the reinforcing bar receiving portion 142 of the frame member 12 is not limited. The shape of the reinforcing bar receiving portion 142 may be changed depending on the installation location. Furthermore, the reinforcing bar receiving portion 142 is provided on the reinforcing bar support portion 14, but this is not limiting. The reinforcing bar receiving portion 142 may be fixed to the upper end of the column portion 13. Furthermore, the vertical position of the reinforcing bar receiving portion 142 does not have to be the upper end of the frame member 12. For example, the vertical position of the reinforcing bar receiving portion 142 may be the center of the column portion 13 in the vertical direction. Furthermore, multiple reinforcing bar receiving portions 142 may be provided.

[0066] 1. It is also possible to use a reinforcing bar gantry support 5 shown in FIG. 1 with a gantry member having a different size in the left-right direction from the column portion 13 of the gantry member 12 shown in FIG. 1. For example, a reinforcing bar gantry set 1A according to a modified example shown in FIG. 13 includes a reinforcing bar gantry support 5 (see FIGS. 1 to 13) and a gantry member 12A. The size in the left-right direction of the column portion 13A of the gantry member 12A is smaller than the size in the left-right direction of the column portion 13 shown in FIG. 1. That is, the size in the third direction of the first plate portion 131A of the column portion 13A is smaller than that of the first plate portion 131 of the column portion 13 (see FIG. 1). The size in the fourth direction of the second plate portion 132A of the column portion 13A is smaller than that of the second plate portion 132 of the column portion 13 (see FIG. 1). In this way, any column portion having a size smaller than the lengths in the third and fourth directions of the recess 531 (see FIG. 10) can be attached to the same reinforcing bar gantry support 5. In this way, multiple types of mount members 12 with different sizes of the column portions 13 in the left-right direction can be used with one reinforcing bar mount support 5. Therefore, it is not necessary to prepare multiple types of reinforcing bar mount supports 5 for multiple types of mount members 12, 12A. Therefore, it is not necessary to prepare multiple types of reinforcing bar mount supports 5 depending on the installation site, improving user convenience.

[0067] Furthermore, the pillar portion 13 (see FIG. 1) has greater strength because its length in the third direction and the fourth direction is greater than that of the pillar portion 13A. Therefore, the pillar portion 13 (see FIG. 1) can support heavier reinforcing bars 97 than the pillar portion 13A. For example, the weight per reinforcing bar 97 can be increased, or the number of reinforcing bars 97 can be increased. On the other hand, to support lighter reinforcing bars 97, the pillar portion 13A, which has shorter lengths in the third direction and the fourth direction than the pillar portion 13 (see FIG. 1), can be used. Since the pillar portion 13A has shorter lengths in the third direction and the fourth direction than the pillar portion 13, it is less expensive, allowing for cost reduction. As such, in this embodiment, the sizes of the pillar portions 13 and 13A can be changed depending on the weight of the reinforcing bars 97, allowing for heavier reinforcing bars 97 to be supported and costs to be reduced.

[0068] Furthermore, the thickness of the pillars 13, 13A in the front-to-rear direction (more specifically, the thickness of the first plate portions 131, 131A in the right-front direction and the thickness of the second plate portions 132, 132A in the left-front direction) may be increased or decreased within the range of the front-to-rear width of the recess 531 (see FIG. 10). Even in this case, increasing the thickness of the pillars 13, 13A in the front-to-rear direction allows them to support heavier reinforcing bars 97. Furthermore, decreasing the thickness of the pillars 13, 13A in the front-to-rear direction makes them less expensive, allowing for cost reduction. [Explanation of symbols]

[0069] 1,1A Reinforced Concrete Stand Set 12, 12A Mounting member 13,13A Pillar part 51 Base 53 Stretching section 54 First part 55 Second part 57 Space formation part 59 volts 142 Reinforcement bar support 519 Base hole 531 recess 533 Connection 571 Nut support part 595 Nut

Claims

1. a base portion having a bottom surface; an extension portion extending from the base portion in a first direction perpendicular to the bottom surface; a recess that is recessed from an end of the extension portion on the first direction side toward a second direction that is the opposite direction to the first direction, into which a column portion of a frame member capable of supporting a reinforcing bar can be inserted; A reinforcing bar support device comprising:

2. 2. The reinforcing bar support according to claim 1, wherein the support is made of synthetic resin.

3. The reinforcing bar support device according to claim 1 or 2, characterized in that it is provided with a space forming portion provided in the extension portion, which forms a space into which a fixing member capable of fixing the column portion can be inserted toward the recess.

4. The extension portion is a first portion extending in a third direction that is a direction parallel to the bottom surface; a second portion extending from an end of the first portion in the third direction in a fourth direction that is parallel to the bottom surface and perpendicular to the third direction; 4. The reinforcing bar support according to claim 3, further comprising:

5. The reinforcing bar frame support according to claim 4, wherein the space forming portion is provided at a connection portion where the first portion and the second portion are connected.

6. the fixing member is a bolt, The space forming portion includes a nut support portion that protrudes parallel to the bottom surface at the connection portion and that can insert and support a nut, The reinforcing bar support according to claim 5, wherein the bolt can be inserted into the recess via the nut supported by the nut support portion.

7. The reinforcing bar frame support according to claim 6, wherein the base portion has a base hole portion that is a hole portion provided on the second direction side of the nut support portion.

8. The reinforcing bar frame support device of claim 7, characterized in that a first distance between the end of the first portion opposite the second portion and the end of the second portion opposite the first portion is greater than a second distance, which is the length of the extension portion in the first direction.

9. The reinforcing bar support device according to claim 8, characterized in that the circular area in which the shank of the bolt inserted into the nut supported by the nut support portion is arranged includes the center point of the extension portion in the first direction.

10. When the shortest distance between the outer periphery of the base portion and the extension portion is defined as a third distance, The reinforcing bar cradle support of claim 9 , wherein the second distance is greater than the third distance.

11. a frame member capable of supporting a reinforcing bar; a reinforcing bar frame support capable of supporting the frame member; Equipped with The reinforcing bar frame support is a base portion having a bottom surface; an extension portion extending from the base portion in a first direction perpendicular to the bottom surface; a recess that is recessed from an end of the extension portion on the first direction side toward a second direction that is the opposite direction to the first direction, and into which a column portion of the mounting member can be inserted; Equipped with The mounting member is a post portion extending in the first direction and insertable into the recess; a reinforcing bar receiving portion that is a portion capable of supporting the reinforcing bar; A reinforcing bar stand set comprising:

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