JP4494520B1 - Leg frame forming tool - Google Patents

Abstract

An object of the present invention is to provide a method frame forming tool which requires only a small occupied space for storage or transportation, can reduce the overall bulk by overlapping, and can be arranged at a free interval during construction.
A pair of frame units (11, 11) consisting of an outer leg bar body (12) and an inner leg bar body (13) corresponding to two sides of a triangle standing with its base on the ground are arranged symmetrically, and the frame units (11) are mutually connected. The frame unit 11 is a unitary frame forming tool 1 in which a grounding bar 132 is projected in the horizontal direction from the lower end 131 of the inner leg bar 13.
[Selection] Figure 1

Description

  The present invention relates to a method frame forming tool for easily forming a method frame.

  The frame that reinforces the slope and natural slope is a form frame attached to the frame forming tool by arranging the frame forming tools with mesh-like side frames along the reinforcing bars arranged in a grid pattern with respect to the slope. Ordinary spraying frame method (Patent Document 1) in which mortar (including concrete, the same applies below) is poured into the frame, or a frame-only method without reticulated side frames along the reinforcing bars arranged in a grid pattern on the slope A frame forming tool is arranged, and it constructs | assembles according to the simple spraying method frame construction method (patent document 2 or patent document 3) which puts mortar in the said method frame forming tool. Since the frame constructed by the spray method frame method is attached with a formwork, it becomes a cross-sectional square shape (trapezoidal shape), and the method frame constructed by the simple spray method frame method only has mortar Therefore, the cross section becomes a semicircular arc shape.

  In recent years, the simple spray method frame method has been frequently used. A frame forming tool (a measurement frame) disclosed in Patent Document 2 includes a pair of first members having a pair of legs and a second member that connects the first members to each other. This is a structure in which a reinforcing bar holding member is erected in a direction connecting a pair of legs in the intermediate portion in the height direction (Patent Document 2 [Claim 1] and others). In addition, the frame forming tool (the frame forming reinforcing bar installation tool) disclosed in Patent Document 3 is a frame member in which two arch-shaped members are crossed and at least one of the four legs of the frame member. It is a structure comprised from one support material, and provided with the engaging part which engages a reinforcing bar in a support material (patent document 3 [Claim 1] others).

JP 2002-129579 A JP 07-317075 A Japanese Patent Laid-Open No. 2003-213693

  The simple spraying method frame construction method has an advantage that the cost required for constructing a method frame can be kept low because it requires only a simple construction in which inexpensive method frame forming tools made of frames are arranged and mortar is added. This simple spraying method frame construction method first lays a net on the slope to be constructed, arranges the frame forming tools at appropriate intervals along the reinforcing bars arranged in a grid, and connects the reinforcing bars and the frame forming tools to the wires. After tying together, etc., mortar is sprayed on the basis of the legal frame forming tool, and the procedure for forming the legal frame is taken. As can be seen, the legal frame former is required not to fall on its own until it is tied to the reinforcing bar.

  Since the frame forming tool disclosed in Patent Document 2 has a pair of leg portions on the two first members connected by the second member, it is self-supporting by a total of four leg portions. However, the configuration in which the two first members are connected by the second member leads to an increase in the size of the frame forming tool, and there is an inconvenience that the occupied space becomes large during storage or transportation. In addition, the interval between the first members that determine the outer shape of the frame is restricted by the second member, and it is difficult to arrange the first members at an arbitrary interval, and the vertical and horizontal lattice intervals in the frame are limited. . The same applies to the legal frame forming tool disclosed in Patent Document 3.

  Therefore, the space occupied during storage or transportation may be small, and if possible, the overall volume can be reduced by overlapping, and the vertical and horizontal lattice spacing in the frame is free, so it is free for actual construction. In order to develop a frame forming tool that can be arranged at intervals, it was studied.

  What was developed as a result of the study was that a pair of frame units consisting of outer leg bars and inner leg bars corresponding to the two sides of a triangle standing on the bottom are grounded symmetrically, and the frame units are erected. One or both of the frame units are a frame forming tool in which a grounding rod is projected horizontally from the lower end of at least one of the outer leg bar or the inner leg bar. . The term “horizontally extending” means that the ground bar protrudes across a straight line connecting the lower ends in a plane including all the lower ends of the outer leg bar and the inner leg bar. Thereby, the grounding rod body and the lower end of the outer leg rod body or the inner leg rod body form a triangular to hexagonal grounding surface S described later. The reinforcing bars are tied to the outer leg bar body, the inner leg bar body or the erection bar body with a wire or the like.

  An outer leg bar body and an inner leg bar body constituting the frame unit, a construction bar body connecting the frame units, and a grounding bar body projecting horizontally from at least one lower end of the outer leg bar body or the inner leg bar body, The same or different types of resin rods or metal rods can be used, but these are preferably metal rods because mortar is used as a reinforcing material for the frame of the frame, and since they are readily available and easy to process.

  The frame unit consisting of metal bars can be constructed by welding the upper ends of the outer leg bars and inner leg bars, which are separate bodies, at the top of the triangle, but the outer leg bars and the inner legs can be folded by bending one bar. A leg bar body may be formed, and a lower end of the outer leg bar body or the inner leg bar body may be bent to form a ground bar. Further, the erected rods made of metal rods are at least erected on the inner leg rods and welded to the inner leg rods, preferably the outer leg rods and all the outer leg rods and the inner leg rods. It is good to weld to.

  When the lower end of the outer leg bar or the inner leg bar is aligned on a straight line, the outer frame bar or inner leg bar that makes point contact with the grounding bar that makes line contact with the slope Self-supporting and grounding by placing the center of gravity G on the grounding surface S of the triangle (one grounding bar) to hexagon (one grounding rod on each outer leg bar) surrounded by the lower end of the body The rod body is stretched to prevent tilting. In addition, the method frame forming tool of the present invention occupies a small space even when the grounding rod is overhanging, and a plurality of method frame forming tools can be stacked by shifting the grounding rod.

  When there is one grounding rod, the frame forming tool of the present invention can be prevented from being tilted by directing the grounding rod toward the lower side of the slope. However, in order to prevent tilting in any orientation, the grounding rod body is projected horizontally and point symmetrically from the lower end of at least one of the outer leg bar body or the inner leg bar body from both frame units. Good. In this case, the center of gravity G is placed on the rectangular or hexagonal ground plane S surrounded by the two ground bars and the two outer leg bars or the lower ends of the inner leg bars, and the ground bar is pointed. Stretching in two symmetric directions prevents tilting.

  In the frame forming tool of the present invention, both of the frame units lower the inner leg bar vertically from the top, project the grounding bar horizontally from the lower end of the inner leg bar, and extend the outer leg from the top. More preferably, the rod body is lowered obliquely downward in the direction in which the frame units are arranged, the lower end of the outer leg rod body is a grounding end, and the construction rod body is bridged horizontally perpendicular to each inner leg rod body. . Thereby, the positional relationship between the reinforcing bar and the frame forming tool can be easily specified by allocating the reinforcing bar to the intersection of the orthogonal inner leg bar and the installation bar. When there are four or more rebars, it is good to use two or more erection bars and increase the number of intersections between the inner leg bar and the erection bar.

  In addition, the above-mentioned method frame forming tool is placed so that the net-like side frame is stood on the copying plane including the outer leg bar body on the same side of the arranged method frame forming tools by lowering the outer leg bar body obliquely downward. It is possible to suppress or prevent the mortar from flowing. In this way, by placing the mesh side frame on the outer leg bar body, it is equivalent to the method frame constructed by arranging the method frame forming tools provided with the mesh side frame (the method frame constructed by the normal spray method frame method). The construction of the legal framework is realized. The net-like side frame placed on the outer leg bar is tied to the outer leg bar using, for example, a wire.

  In order to make the alignment with the reinforcing bars arranged in a lattice pattern on the slope more accurately, the erected bar may be a bar having a reinforcing bar receiver formed on the way. That is, by aligning the reinforcing bar to the reinforcing bar receiver formed on the erection rod body, accurate alignment of the frame forming tool by the reinforcing bar is realized. In addition, after the method frame forming tool is arranged, a new reinforcing bar can be aligned via the method frame forming tool by assigning a new reinforcing bar to another reinforcing bar receiver. The reinforcing bar receiver may be a separate member that is separately attached to the erection bar, but when the erection bar is a metal bar, it may be formed by a concave part that is partially curved.

  As described above, the method frame forming tool of the present invention mounts a net-like side frame on the outer leg rod body, and realizes construction of a method frame equivalent to a method frame constructed by a normal spray method frame construction method. The reticulated side frame is connected to the outer leg bar body by a wire or the like. However, if the hook protruding from the outer leg bar body is a construction bar body provided at one end or both ends, the positioning and positioning can be performed only by hooking the reticulated side frame on the hook. The position can be fixed.

  The method frame forming tool of the present invention has a shape that can occupy a small space for storage or transportation except for the grounding rod body protruding, and can be overlapped by shifting the grounding rod body to reduce the overall bulk. It is. This has the effect of reducing labor and cost for storing and transporting a large number of frame formers. In addition, since the method frame forming tool of the present invention occupies a small ground contact surface, a large number can be installed at narrow intervals along the reinforcing bars. As a result, an effect is obtained in which the vertical and horizontal lattice intervals in the normal frame can be freely set. In addition, the method frame forming tool of the present invention can construct a method frame not only by a simple spray method frame method but also by a normal spray method frame method by placing a net-like side frame on an outer leg bar. For this reason, the versatility effect which can suppress or prevent the flow of mortar in a simple spraying method frame construction method or can construct a strong method frame by a normal simple spraying method frame construction method is obtained.

It is a perspective view showing an example of the legal frame formation tool based on this invention. It is a front view showing the frame forming tool of this example. It is a top view showing the method frame formation tool of this example. It is a side view showing the frame forming tool of this example. FIG. 2 is a perspective view corresponding to FIG. It is a perspective view showing another example of the legal frame formation tool based on this invention. It is a perspective view showing another example of the legal frame formation tool based on this invention. It is a perspective view showing another example of the legal frame formation tool based on this invention. It is a perspective view showing the method frame constructed | assembled by the simple spray method frame method using the method frame formation tool of this example. It is a perspective view showing the construction procedure 1 of the simple spraying method frame construction method using the method frame formation tool of this example. It is a perspective view showing the construction procedure 2 of the simple spraying method frame construction method using the method frame formation tool of this example. It is a perspective view showing the construction procedure 3 of the simple spraying method frame construction method using the method frame formation tool of this example. It is a perspective view showing another procedure 3 in the simple spraying method frame construction method using the method frame forming tool of this example. It is a perspective view showing the construction procedure 4 of the simple spraying method frame construction method using the method frame formation tool of this example. It is a perspective view showing another example of the legal frame formation tool based on this invention. It is a perspective view showing the construction procedure 4 of the simple spraying method frame construction method using the method frame formation tool of another example.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 4, for example, the frame forming tool 1 according to the present invention has an inner leg bar 13 that is in contact with one of two sides of a triangle that stands on the ground with its base in the vertical direction from the top 111 of the triangle. The frame unit 11 in which the outer leg bar 12 corresponding to the remaining other is lowered downward from the top 111 is line-symmetrically arranged so that the lower end 121 of each outer leg bar 12 and the lower end 131 of the inner leg bar 13 are linear. Are arranged so as to be lined up and arranged vertically, and two upper and lower erection rods 14, 14 are horizontally bridged between the outer leg rods 12, 12, perpendicular to the inner leg rods 13, respectively.

  In the frame unit 11, one metal bar is bent to form an outer leg bar 12 and an inner leg bar 13, and a lower end 131 of the inner leg bar 13 is further bent to form a ground bar 132. . The erection bar body 14 is a metal bar body 14 in which a reinforcing bar receiver 141 composed of a concave portion curved in the middle is formed, and welded to the intersecting outer leg bar body 12 and inner leg bar body 13, respectively. The upper erection bar body 14 is a reinforcing bar receiver 11 that is recessed upward, and the lower erection bar body 14 is a reinforcing bar receiver 141 that is recessed downward.

  As shown in FIG. 2, the reinforcing bar 31 is addressed to (1) the reinforcing bar receiver 141 formed on the lower erection bar 14 or (2) the intersection of the inner leg bar 13 and the lower erection bar 14. By galling, the frame forming tool 1 is aligned by the reinforcing bar 31. In addition, after the frame forming tool 1 is arranged, (3) the reinforcing bar receiver 141 formed on the upper erection bar 14 or (4) the intersection of the inner leg bar 13 and the upper erection bar 14 By repelling, the new reinforcing bar 31 is aligned by the frame forming tool 1. The reinforcing bar 31 is connected to the outer leg bar 12, the inner leg bar 13, or the erection bar 14 with a wire 33 (see FIG. 11 and later).

  In the frame forming tool 1 of this example, each of the lower ends 121 of the outer leg bar 12 is a grounding end, and perpendicular to the arrangement direction of the frame units 11 and 11 from the lower end 131 of the inner leg bar 13 (see FIG. 3). ) The grounding rod 132 is projected horizontally and symmetrically. As a result, the frame forming tool 1 of this example has a quadrangular ground surface S surrounded by the two ground bars 132 and the lower ends 121 of the two outer leg bars 12, as shown in FIG. The center of gravity G is housed in a self-supporting state, and the grounding rod 132 is stretched in two point-symmetrical directions to prevent tilting (see FIG. 4).

  In the frame forming tool 1 of this example, as described above, the frame units 11 and 11 are arranged so that the lower end 121 of the outer leg bar 12 and the lower end 131 of the inner leg bar 13 are aligned on a straight line. Thus, although the grounding rod 132 protrudes, the occupied space is extremely small (Comparative Reference 2 or 3). For this reason, as seen in FIG. 5, the ground rod 132 can be shifted and the plurality of frame forming tools 1 can be stacked or stored. This means that a large amount of the legal frame forming tool 1 can be stored or transported, and the labor and cost required for the storage or transport are greatly reduced.

  For example, as shown in FIG. 6, the present invention can also be a method frame forming tool 1 in which the grounding rod 131 protrudes only from the lower end 131 of the inner leg rod 13 of one frame unit 11. In this other example, the frame forming tool 1 (see FIG. 6) includes the frame unit 11 including the outer leg bar body 12 and the inner leg bar body 13 and the construction of the erection bar body 14 as shown in the above-described example of the frame forming tool 1 (see FIG. 6). 1 to FIG. 4), but since there is one grounding rod 132, the triangular grounding surface S surrounded by the grounding rod 132 in line contact and the lower end 121 of the outer leg rod 12 in point contact. It is different in that it is self-supporting by placing the center of gravity G in the center, and the grounding rod 132 is stretched to prevent tilting in one direction (lower left in FIG. 6) (the inner leg rod 13 of the other frame unit 11). The lower end 131 is on a line connecting the lower end 121 of the outer leg rod 12 and does not contribute to the formation of the ground contact surface S).

  In order to make it more stable and independent, for example, as shown in FIG. 7, the grounding rods are alternately staggered from all of the lower end 121 of the outer leg bar 12 and the lower end 131 of the inner leg bar 13 of both frame units 11. It can also be set as the frame forming tool 1 which 122,132 overhangs. In this other example, the frame forming tool 1 (see FIG. 7) includes the frame unit 11 including the outer leg bar body 12 and the inner leg bar body 13 and the construction of the erection bar body 14 as shown in the above-described example of the frame forming tool 1 (see FIG. 7). 1 to 4)), but it is self-supporting by placing the center of gravity G in the large six-drawn ground contact surface S surrounded by the ground contact rods 122 and 132 that are in line contact, and the ground contact rods 122 and 132 are stretched to prevent tilting. The difference is realized. Even in this other example of the frame forming tool 1 (see FIG. 7), the ground rods 122 and 132 can be overlapped as described above.

  In addition, since the erection rod body 14 only needs to connect the frame units 11 and 11, for example, as shown in FIG. In this another example of the frame forming tool 1 (see FIG. 8), the structure of the frame unit 11 composed of the outer leg bar 12 and the inner leg bar 13 is the same as the above-described example of the frame forming tool 1 (see FIGS. 1 to 4). ), But is different in that there is only one erection rod 14 and the structural strength as a frame is reduced. Reference) is preferably a configuration in which the interval between the frame units 11 is smaller than that of the frame forming tool 1 of this example (see FIGS. 1 to 4), that is, a relatively small configuration. For this reason, since the constructed frame 3 (see FIG. 9 below) is also small, the number of reinforcing bars 31 to be arranged is small, and it is only necessary to address to one erection rod 14.

  The frame 3 is constructed as shown in FIG. 9, for example, as in the case where a conventional frame forming tool of the same type (see Patent Document 2 or Patent Document 3) is used. That is, reinforcing bars 31 are arranged in a lattice pattern on a rhombus wire mesh 21 installed on the slope 2, and the mortar 34 is arranged using the method frame forming tool 1 arranged at equal intervals along the reinforcing bars 31 as a guide. To construct. In this example, in order to suppress or prevent the mortar 34 from flowing down with the lower left portion in FIG. 9 being the lower slope surface, the net-like side frame 32 is provided on the outer leg bar 12 on the lower side of the slope surface of the horizontal frame forming tool 1. Is on. Although illustration is omitted, a pair of net-like side frames 32 may be placed on both sides of the method frame forming tool 1 in order to reinforce the method frame 3 itself.

  A specific construction procedure of the method frame 3 (see FIG. 9) constructed using the method frame forming tool 1 (see FIGS. 1 to 4) of this example will be described. First, as can be seen in FIG. 10, a rhombus wire mesh 21 (see FIG. 9, not shown for convenience from FIG. 10 onward) is placed on the sloped slope 2, and then the reinforcing bars 31 are arranged in a grid pattern. At this time, the lattice spacing of the reinforcing bars 31 determines the lattice spacing of the normal frame 3. In addition, although illustration is omitted, anchors are driven at the intersections of the horizontal reinforcing bars 31 and the vertical and horizontal reinforcing bars 31 as necessary to fix the positional relationship of the reinforcing bars 31 with respect to the slope 2. In addition, a dedicated block having a through hole for driving an anchor may be arranged at the intersection.

  As shown in FIG. 11, the frame forming tool 1 is arranged across the reinforcing bars 31 arranged on the slope 2 in this way. Then, the reinforcing bar 31 is lifted, and the frame forming tool 1 is positioned with respect to the reinforcing bar 31 by placing the reinforcing bar 31 from below at the downwardly recessed reinforcing bar receiver 141 formed on the lower erection rod 14, and finally the wire 33. As a result, the rebar 31 is connected to the erection rod 14. In this example, as shown in FIG. 12, a new reinforcing bar 31 is applied from above to a reinforcing bar receiver 141 that is formed in the upper mounting bar 14 and is recessed upward, and the reinforcing bar 31 is mounted by a wire 33. By linking to 14, the frame forming tool 1 is fixed in a more stable position.

  In order to clarify the positional relationship between the legal frame forming tools 1 and to connect each other more firmly, as shown in FIG. The reinforcing bars 31 may be routed to the intersections of the body 13 and the lower erection bar 14 and the intersections of the inner leg bar 13 and the upper erection bar 14, and may be connected by the wire 33. In this case, although the work of binding the wires 33 takes time, the posture of each frame forming tool 1 is firmly regulated by the four reinforcing bars 31, so that the positional relationship between the frame forming tools 1 is further clarified, And it is possible to connect each other more firmly.

  As shown in FIG. 14, the frame forming tool 1 of the present example has an outer leg on the same side of the frame forming tool 1 arranged along the reinforcing bars 31 as shown in FIG. The reticulated side frame 32 can be stood and placed on the copying plane including the rod 12. Thereby, it can suppress or prevent that the mortar 34 sprayed and accumulated flows. When the net-like side frame 32 is leaned against the outer leg rod body 12, it is connected to the outer leg rod body 12 and the construction rod body 14 by the wire 33. The legal frame forming tool 1 and the reticulated side frame 32 are buried in a mortar 34 and become an internal structural member of the legal frame 3. From now on, in order to construct a strong legal frame 3, as described above, the reticulated side frame 32 may be placed on the remaining outer leg bar 12 as well.

  Assuming that the reticulated side frame 32 is placed on the outer leg rod body 12, as shown in FIG. 15, a normal frame is formed by providing hooks 142 at both ends of the construction rod body 14 protruding from the outer leg rod body 12. The tool 1 can also be used. In this other example of the frame forming tool 1 (see FIG. 15), the frame unit 11 composed of the outer leg bar 12 and the inner leg bar 13 is the same as the above-described example of the frame forming tool 1 (see FIGS. 1 to 4). Although not changed, the difference is that hooks 142 are provided at both ends of the erection bar 14 projecting from the outer leg bar 12. Although not shown in the drawings, the hook 142 does not get in the way when the method frame forming tool 1 is superposed, so that a number of method frame forming tools 1 can be superposed by shifting the grounding rod 131 (see FIG. 5).

  If the above-described another example of the frame forming tool 1 (see FIG. 15) is used, as shown in FIG. 16, the reticulated side frame 32 can be easily hooked onto the outer leg rod body 12 without being caught by hook 142. Can be placed. Thereby, in addition to the trouble of fixing the position of the mesh side frame 32 to the legal frame forming tool 1, it is easy to position the mesh side frame 32 with respect to the method frame forming tool 1, although it is in the range of the mesh size. Reduce construction time. When placing the reticulated side frame 32 on the minimum outer leg bar 12 as necessary, the frame forming tool 1 without the hook 142 (see FIGS. 1 to 4) is preferable because it has no protrusions, but almost all When the net-like side frame 32 is placed on the outer leg bar 12, another example of the frame forming tool 1 (see FIG. 15) is suitable.

1 Leg frame forming tool
11 Frame unit
12 Outer leg rod
122 Ground rod
13 Inner leg rod
132 Ground rod
14 Construction rod
141 Reinforcement
2 Slope 3 Leg frame
31 Rebar
32 Reticulated side frame G Center of gravity
S Ground plane

Claims (5)

A pair of frame units consisting of an outer leg bar body and an inner leg bar body corresponding to two sides of a triangle standing with its base on the ground are arranged symmetrically, and the frame units are connected to each other by an erection bar body to be integrated. And
One or both of the frame units is a normal frame forming tool in which a grounding rod is projected horizontally from the lower end of at least one of the outer leg bar or the inner leg bar. The frame forming tool according to claim 1, wherein both of the frame units have a grounding bar projecting horizontally and point-symmetrically from the lower end of at least one of the outer leg bar or the inner leg bar. In both frame units, the inner leg bar is lowered vertically from the top, the ground bar is projected horizontally from the lower end of the inner leg bar, and the outer leg bar is arranged in the direction of the frame unit from the top. The frame forming tool according to claim 1 or 2, wherein the frame is lowered downward, and the lower end of the outer leg bar body is a grounding end, and the installation bar body is bridged horizontally perpendicular to each inner leg bar body. . The method frame forming tool according to any one of claims 1 to 3, wherein the erection rod is a rod formed with a reinforcing bar receiver in the middle. The frame forming tool according to any one of claims 1 to 4, wherein the erection bar is a bar provided with hooks projecting from the outer leg bar at one end or both ends.

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