Attachment tool, and foundation part with attachment tool

Abstract

To provide an attachment tool which can easily fix a foundation part with an operation only in one side of a scaffold.SOLUTION: The present invention for solving the above problem provides an attachment tool X which can fix a foundation of a structure to a top surface of a scaffold. The attachment tool X includes main pile parts 11, 21, 61 which can penetrate through the top surface of the scaffold, and lock parts 12, 22, 62 which allow extension of one ends of the main pile parts 11, 21, 61 in one direction. The main pile parts 11, 21, 61 have engaging parts 111, 211, 611 from the other ends around an axial direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a mounting fixture that allows temporary equipment to be safely installed at a high-altitude work site, and a foundation portion equipped with the mounting fixture. [Background technology]

[0002] Temporary cranes are required to lift heavy loads in structures where electrical and communication equipment is installed at high altitudes, such as telecommunication towers and high-rise buildings. In such high-altitude work, scaffolding is often provided for workers, and temporary cranes are fixed to the scaffolding. In this case, the base of the crane is fixed to the steel frame on the underside of the scaffolding or temporary platform so that it can withstand the weight of the heavy load being lifted. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6289046 Summary of the Invention [Problem to be solved by the invention]

[0004] The temporary platform described in Patent Document 1 is configured to attach the base of a tower crane to a platform constructed halfway up a building. The mounting structure disclosed therein is fastened with bolts or nuts from the underside of the steel frame, but this configuration requires workers to get under the steel frame that will serve as the scaffolding, and there is also the possibility of parts falling, posing a major safety issue.

[0005] Furthermore, such temporary cranes are not limited to large cranes; there are also small-scale cranes that use metal poles as substitutes, so it is preferable to provide a foundation that can be easily adapted to various working conditions.

[0006] In view of the above problems, the present invention aims to provide a mounting fixture that allows the base to be easily fixed by working on only one side of the scaffolding. [Means for solving the problem]

[0007] The present invention, which solves the above problem, is a mounting device that can fix the foundation of a structure to the top surface of scaffolding, and is equipped with a main pile portion that can penetrate the top surface of the scaffolding, and a locking portion that expands one end of the main pile portion in one direction, and the main pile portion has an engagement portion extending from the other end around the axial direction. This configuration allows the base to be easily secured by working on only one side of the scaffolding.

[0008] In a preferred embodiment of the present invention, a first mounting tool and a second mounting tool are combined, and the first mounting tool and the second mounting tool are provided with connecting parts at the locking parts that allow them to be connected to each other. With this configuration, the base can be stably fixed to the scaffolding using a pair of mounting fixtures.

[0009] In a preferred embodiment of the present invention, the connecting portion includes a protrusion on the first mounting fixture and a through hole on the second mounting fixture. With this configuration, a pair of attachments can be connected with a simple operation.

[0010] In a preferred embodiment of the present invention, a plurality of through holes are provided in the length direction of the locking portion. This configuration makes it possible to easily accommodate a variety of mounting conditions.

[0011] In a preferred embodiment of the present invention, two or more of the protrusions and two or more of the through holes are provided at equal intervals. This configuration allows the connection state of the pair of mounting fixtures to be more stable.

[0012] In a preferred embodiment of the present invention, the main pile further includes an insertion portion at the other end thereof in a direction intersecting the axial direction. With this configuration, it is possible to easily prevent components from falling off by inserting a separate member through the connector.

[0013] In a preferred embodiment of the present invention, the engaging portion has a retaining portion that faces a side surface of the main pile portion at a predetermined distance. With this configuration, even if the object to be locked is thin, the locked state can be maintained stably.

[0014] In a preferred embodiment of the present invention, the main pile portion and the locking portion are sized to be able to hold standardized shaped steel. With this configuration, the foundation can be easily fixed to the columns and beams that form the main framework of the structure.

[0015] A preferred form of the invention is a temporary foundation including the mounting. This configuration allows a variety of structures to be easily installed on high-altitude scaffolding. [Effects of the Invention]

[0016] The present invention solves the above-mentioned problem by providing a fixture that allows the base to be easily fixed by working on only one side of the scaffolding. [Brief explanation of the drawings]

[0017] [Figure 1] 1A and 1B are explanatory diagrams showing the configuration of a mounting fixture and a base part, and a mounting structure to an object according to a first embodiment of the present invention. [Figure 2] 1 is an explanatory diagram showing the configuration of a mounting fixture according to a first embodiment of the present invention. FIG. [Figure 3] 1 is an explanatory diagram showing a state in which a base portion is fixed to an object by a mounting fixture according to a first embodiment of the present invention. FIG. [Figure 4] FIG. 1 is an explanatory diagram showing an example of a structure supported by a fixture according to a first embodiment of the present invention. [Figure 5] FIG. 10 is an explanatory diagram showing the configuration of a mounting fixture according to a second embodiment of the present invention. [Figure 6]FIG. 10 is an explanatory diagram showing a state in which a base portion is fixed to an object by a mounting fixture according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0018] The mounting fixture X and base part Y according to each embodiment of the present invention will be described below with reference to the drawings. The description will be made in detail in the order of the configuration of the embodiment, the method of implementation, and other examples. It should be noted that the following embodiments are merely examples of the present invention, and the present invention is not limited to the following embodiments.

[0019] First Embodiment As shown in Figures 1(a), 1(b), 2(a), 2(b), and 2(c), the mounting fixture X according to this embodiment is a set of a first mounting fixture 1 and a second mounting fixture 2, each of which has main pile portions 11, 21, locking portions 12, 22, and insertion portions 13, 23. The first mounting fixture 1 and the second mounting fixture 2 can be connected to a foundation portion Y, allowing the foundation portion Y to be fixed to an object. The object here is a scaffolding erected in the air, particularly at a high altitude, and includes a platform S and a beam B as shown in Figure 1(b).

[0020] As shown in FIG. 1(b), the platform S is a metal member (such as expanded metal) formed into a mesh shape, and forms the top surface (such as a stage mesh) of the scaffolding. The mesh size of the platform S is large enough to stably support the human body, particularly to prevent the soles of the feet from slipping out, and is large enough that each part of the mounting fixture X can easily pass through. With this configuration, the platform S forms a lightweight and sturdy scaffolding, and structures can be easily fixed to its top surface using the mounting fixture X.

[0021] The beam B is a member provided on the underside of the platform S to support the platform S so that it does not bend, and in this embodiment, it is preferably made of standardized structural steel. This configuration not only makes it easy to construct the scaffolding, but also facilitates surface contact with the fixture X, making it possible to stabilize the mounting state of the base Y using the fixture X.

[0022] In the first mounting fixture 1, the main pile portion 11 is a columnar member that forms the center of the mounting fixture X, is longer than the cross-sectional width of the beam B, and can penetrate the foundation portion Y and the platform S. Here, as shown in FIG. 2(a), the center line along the longitudinal direction of the main pile portion 11 is referred to as the axis A, and in the following explanation, the direction of the axis A is referred to as the axial direction, and the direction of a plane perpendicular to the axis A is referred to as the cross-sectional direction (the same applies to the second mounting fixture 2 described later).

[0023] The main pile portion 11 has an engagement portion 111 around its axial direction, in other words, on its side surface. The engagement portion 111 is a convex or concave portion that is provided spirally from one end of the main pile portion 11 around the axis A, and is preferably a male thread. The first mounting fixture 1 is configured such that a locking portion 12 is provided at one end of the main pile portion 11, and the engagement portion 111 is provided from the other end to a predetermined length. With this configuration, the first mounting fixture 1 can be easily connected to the foundation portion Y by tightening bolts (or nuts 3), as shown in Figures 1(a) and 1(b).

[0024] The locking portion 12 is a beam-shaped member provided at one end of the main pile portion 11, and expands the end of the main pile portion 11 in one direction away from the axis A. In particular, it is preferable that the length direction of the locking portion 12 is approximately perpendicular to the axis A, as this configuration makes it easier to lock onto standardized structural steel.

[0025] The insertion portion 13 is a ring-shaped member provided on the other end of the main pile portion 11, i.e., the end where the engagement portion 111 is provided, and allows a linear member to be inserted therethrough. The direction in which the linear member can be inserted in the insertion portion 13 intersects with the axial direction, and the linear member inserted therein is supported, preventing the first mounting fixture 1 from falling. The size of the insertion portion 13 is also smaller than the cross-sectional area of ​​the main pile portion 11. With this configuration, the nut 3 (described below) is not obstructed when it is attached to the engagement portion 111.

[0026] The auxiliary wire W is a wire (or braided cord) strong enough to withstand the weight of the mounting fixture X or base Y, and in this embodiment is inserted into the insertion portion 13. This prevents the first mounting fixture 1 from falling when the first mounting fixture 1 is passed through from the top to the bottom of the platform S. The auxiliary wire W is similarly provided for the second mounting fixture 2, which will be described later.

[0027] Similar to the first mounting fixture 1, the second mounting fixture 2 has a main pile portion 21, an engaging portion 22, and an insertion portion 23, and the main pile portion 21 is further provided with an engaging portion 211 in the same configuration as the first mounting fixture 1. With this configuration, similar to the first mounting fixture 1, it can penetrate the platform S (top surface of the scaffolding) and engage with the beam B to easily secure the base portion Y. Also, similar to the insertion portion 13 of the first mounting fixture 1, an auxiliary wire W can be inserted into the insertion portion 23 to prevent it from falling during work.

[0028] The locking portions 12 and 22 each have a connecting portion C that allows them to be connected to each other. This connecting portion C may have any configuration as long as it can maintain the relative position and posture of the locking portion 12 of the first mounting fixture 1 and the locking portion 22 of the second mounting fixture 2, but in this embodiment, as shown in Figures 2(a), 2(b), and 2(c), the first mounting fixture 1 includes a protrusion 121, and the second mounting fixture 2 includes an insertion hole 221.

[0029] The protrusions 121 are columnar members that protrude from the locking portion 12 at least once, and enable the positioning of the first mounting fixture 1 and the second mounting fixture 2. Preferably, the protrusions 121 are configured to protrude in the axial direction of the main pile portion 11, that is, parallel to the fastening direction of the engaging portion 111 and the nut 3. With this configuration, the movement caused by fastening the engaging portion 111 and the nut 3 is linked to the protrusions 121, allowing for easy and stable connection to the second mounting fixture 2.

[0030] The insertion hole 221 is a through-hole or hole that penetrates the locking portion 22 in one direction, allowing the protrusion 121 to penetrate therethrough. The cross-sectional area of ​​the insertion hole 221 is approximately the same as or slightly larger than that of the protrusion 121, and the penetration direction (depth direction) is preferably parallel to the axial direction of the main pile portion 21, i.e., the fastening direction of the engaging portion 211 and the nut 3, as with the protrusion 121. With this configuration, the movement of the engaging portion 211 due to fastening the nut 3 is linked to the insertion hole 221, allowing it to be easily and stably fitted into the protrusion 121 and connected to the first mounting fixture 1.

[0031] As shown in Figures 2(a), 2(b), and 2(c), it is preferable that a plurality of protrusions 121 and a plurality of insertion holes 221 are provided in the longitudinal direction of the locking portions 12 and 22. It is also more preferable that adjacent protrusions 121 and adjacent insertion holes 221 are all equally spaced apart. With this configuration, by changing the fitting combination of the protrusions 121 and the insertion holes 221, it is possible to freely change the distance between the axes A of the first mounting fixture 1 and the second mounting fixture 2, and it is possible to accommodate various conditions regarding the size and width of the object to which the mounting fixture X is to be attached.

[0032] It is preferable that the protruding length of the protruding portion 121 and the axial thickness of the locking portion 22 of the second mounting fixture 2 (the depth of the insertion hole 221 that penetrates the locking portion 12) are approximately equal. With this configuration, even if some of the multiple protruding portions 121 and insertion holes 221 are not used for fitting, as shown in Figure 3(a), almost the entire locking portion 12 can come into contact with the object (beam B in the drawing), and distortion of the mounting fixture X in the mounted state can be suppressed.

[0033] The nut 3 is a general fastener with a through hole and an internal thread, and engages with the engagement portions 111, 211 of the mounting fixture X, enabling it to hold the mounting fixture X at a predetermined position (height). As shown in Figures 1(a) and 1(b), the mounting fixture X is connected and held in place by the nut 3 (and washer) to the foundation portion Y, and the foundation portion Y is fixed by surrounding the object with the main pile portions 11, 21 and the locking portions 12, 22, as if to hold it up.

[0034] As shown in Figure 1(a), the base part Y is a structure having a plate 4 to which the mounting fixture X can be connected and held, and a mount 5 to which the main body (main part) of the structure can be attached, and fixes and supports the structure on the top surface of the scaffolding (platform S).

[0035] As shown in FIGS. 1(a) and 1(b), the plate 4 is a flat member that allows the base portion Y to be placed on the top surface of an object, and has mounting holes 41 to which the mounting fixture X can be attached. The mounting holes 41 are through-holes that penetrate the plate 4 in the thickness direction, and a plurality of them are provided in a line across the surface direction of the plate 4. The mounting holes 41 are also of a size (or width) that allows at least the main pile portions 11, 21 of the mounting fixture X to pass through. As a result, the mounting fixture X is locked to the surface of the plate 4 by fastening the nuts 3 (and washers) on the vertically upper side where it penetrates the mounting holes 41, and is held at a predetermined position (height).

[0036] 1(b), the mounting holes 41 are preferably elongated holes extending in a specific direction. This configuration allows for easy adjustment of the distance between the axes A of the mounting fixtures X at the connection parts C, and allows the base part Y to be fixed to objects of various sizes and widths.

[0037] 3(a) and 3(b) show the state in which the mounting fixture X has fixed the foundation Y to a platform S with a beam B. In this state, the foundation Y is placed on the top surface formed by the platform S directly above the beam B, and the main piles 11, 21 of the mounting fixture X penetrate the plate 4 and the platform S. The mounting fixture X is also placed with the locking portions 12, 22 recessed under the beam B, and the protrusion 121 fits into the insertion hole 221 on the underside of the beam B, connecting the first mounting fixture 1 and the second mounting fixture 2. Nuts 3 are fastened to the main piles 11, 21 of the mounting fixture X on the top surface of the plate 4, and the nuts (together with washers) are locked onto the surface of the plate 4 and held in place. In addition, the locking portions 12, 22 abut against the beam B from below, and the fastening force of the nut 3 presses the beam B vertically against the locking portion 12 and the plate 4, thereby fixing the base portion Y to the top surface of the platform S.

[0038] In the example of the present invention shown in FIG. 3(a), beam B is an H-shaped steel beam with an H-shaped cross section. In FIG. 3(b), beam B is a channel steel beam with a U-shaped cross section. The two beams have different widths in the horizontal direction, i.e., along the surface of platform S. However, by changing the manner in which protrusions 121 and insertion holes 221 at connection portion C are fitted together and the distance between the axes A of main piles 11 and 21 passing through mounting holes 41, mounting fixture X can be attached to fit the cross-sectional size of beam B, enabling foundation portion Y to accommodate various mounting conditions. For example, in the example of FIG. 3(a), at connection portion C, protrusion 121 furthest from axis A is fitted together with insertion hole 221 furthest from axis A. In the example of FIG. 3(b), all of the multiple protrusions 121 and insertion holes 221 are fitted together, shortening the distance between the axes A of first mounting fixture 1 and second mounting fixture 2.

[0039] 4 shows an example of the use of the fixture X and base Y according to this embodiment. In this example, a crane boom P for a simple crane is attached to the base Y, which is fixed to the platform S and the beam B. In this way, the fixture X and base Y can be used when fixing a temporary structure to the top surface of the scaffolding (on the platform S).

[0040] The present invention may have the following configurations. However, the following configurations are merely examples, and the presence or absence of the configurations can be determined arbitrarily unless otherwise specified.

[0041] <Example of change> 4(c) shows an enlarged view of the connection state at connection portion C. Of the protrusions 121 and insertion holes 221 that make up this connection portion C, the protrusion 121 farthest from the main pile portion 11 of the first mounting fixture 1 and the insertion hole 221 closest to the main pile portion 21 of the second mounting fixture 2 may be configured to be shorter (shallower) than the other protrusions 121 and insertion holes 221. With this configuration, when the insertion hole 221 is located directly below the main pile portion 21 of the second mounting fixture 2, the thickness of the member (the connection area between the main pile portion 21 and the locking portion 22) can be ensured and strength is not compromised.

[0042] Hereinafter, a method for carrying out the present invention will be described in detail with reference to the drawings. The ...

[0043] <<Implementation Method>> First, the user places the base Y on the top surface of the platform S. At this time, it is preferable to position the base Y approximately directly above the beam B, and further to determine that the longitudinal direction of the mounting holes 41 of the plate 4 intersects with the longitudinal direction of the beam B. This makes it easy to change the fixing position of the mounting fixture X.

[0044] Next, the user inserts the first mounting fixture 1, with the washer and nut 3 already threaded through the main pile portion 11, from the tip of the locking portion 12 into the mounting hole 41 and the gaps in the mesh of the platform S, penetrating it partway through the main pile portion 11. At this time, by inserting the auxiliary wire W through the insertion portion 13 beforehand before performing the work, the first mounting fixture 1 can be prevented from falling. The user also passes the second mounting fixture 2 (and the washer and nut 3) through the mounting hole 41 and the gaps in the mesh of the platform S in the same way.

[0045] Next, the user adjusts the distance (distance between axes A) between the main pile portion 11 of the first mounting fixture 1 and the main pile portion 21 of the second mounting fixture 2 to match the width of the beam B, and connects the first mounting fixture 1 and the second mounting fixture 2 at connection portion C. At this time, the user appropriately determines the positions and numbers of the protrusions 121 and insertion holes 221 to fit together, achieving a connection state that matches the width of the beam B. Here, because the protrusions 121 and insertion holes 221 are discretely arranged in each of the locking portions 12, 22, it is possible that the distance between axes A is long compared to the width of the beam B. In this case, the protrusions 121 and insertion holes 221 are fitted together one by one, and the locking portions 12 and 22 are arranged so that they bend in a dogleg shape at the fitting position in a plan view, thereby making it possible to fit the width of the beam B.

[0046] The user then tightens the nuts 3 to hold the beam B together with the set of fixtures X and the plate 4, and attaches the base part Y. The user performs the above work for one or two sets of fixtures X (three or more sets are also acceptable) to secure the base part Y so that it does not slip off the platform S (top surface of the scaffolding). Using the above work method, the user can perform all work on the platform S, improving safety.

[0047] The user then attaches a structure to the mount 5 of the base Y as shown in Figure 3(b) or Figure 4. In the example shown in Figure 4, a pole whose orientation can be changed about a rotation axis provided on the mount 5 is attached, creating a simple crane. In addition, it is also possible to attach the legs of temporary equipment to the mount 5, allowing work at height (on scaffolding) to be carried out safely and at low cost.

[0048] When the user wants to remove the fixture X and the foundation Y, he or she removes the fixture X and the foundation Y from the beam B and the platform S by following the steps above in reverse.

[0049] An example of an application of the above-described embodiment method is a method of installing a housing-like facility next to a wall. In this example, when fixing a housing-like facility to a wall, the fixture X is used horizontally on a low-strength wall (such as a foam concrete wall or a block wall) where a normal anchor bolt will not work. In this configuration, the main piles 11 and 21 penetrate the wall, the locking portions 12 and 22 hold the housing as if embracing it, and the main piles 11 and 21 are fixed on the opposite side of the wall with nuts 3 or the like, thereby fixing the housing to the wall. This configuration increases the options for installation locations for the facility to be installed on the wall.

[0050] A mounting fixture X and a base Y according to a second embodiment of the present invention will be described below with reference to the drawings. Note that the same components as those in the first embodiment will be designated by the same reference numerals and will not be described again. Furthermore, the embodiment described below is an example of the present invention, and the present invention is not limited to the following embodiment.

[0051] Second Embodiment As shown in Fig. 5(a), the fixture X according to this embodiment is an independent fixture 6 that can stably hold an object by itself, and includes a main pile portion 61, a locking portion 62, and an insertion portion 63. The main pile portion 61 has an engagement portion 611, as in the first embodiment, and its longitudinal direction is defined as an axis A.

[0052] The locking portion 62 has a retaining portion 621 that faces the side of the main pile portion 61 at a predetermined distance. The retaining portion 621 is a columnar member that rises in a bent manner from the tip of the locking portion 62 and extends in the axial direction. By facing the main pile portion 61, it forms a hook shape together with the main pile portion 61. The distance by which the retaining portion 621 is separated from the side of the main pile portion 61, i.e., the length by which the locking portion 62 moves away from the axis A, is set to an extent that is almost unaffected by the deflection of the locking portion 62, more specifically, is preferably 15 cm or less, and even more preferably 10 cm or less. With this configuration, a stable locking state can be maintained even if the object to be locked by the independent mounting fixture 6 is a thin pillar or plate (in the thickness direction).

[0053] 5(b) shows the state in which the foundation Y is fixed to the beam B and platform S by the independent mounting fixture 6. As in the first embodiment, the main pile portion 61 of the independent mounting fixture 6 penetrates the plate 4 of the foundation Y and the platform S, and the locking portion 62 and the holding portion 621 are locked to the thin plate portion of the beam B, and in this state the independent mounting fixture 6 is connected to and held by the plate 4.

[0054] 6(a) and 6(b) show views from different directions of the state in which the foundation Y is fixed to the beam B and platform S by the independent mounting fixture 6. In these examples, the beam B is a steel beam with an L-shaped cross section, and the locking part 62 locks the tip of one of the ribs, that is, in the thickness direction of the thin plate-like member, together with the holding part 621. In this state, when the nut 3 is tightened, the locking part 62 and the plate 4 embrace and press down the beam B, fixing the foundation Y to the top surface of the platform S.

[0055] In the base Y fixed to the top surface of the platform S with the above configuration, as shown in Fig. 6(a), it is preferable that the plate 4 is fixed at an angle to the beam B, in other words, so that the diagonal line in the surface direction of the plate 4 is approximately parallel to the longitudinal direction of the beam B. With this configuration, the base Y can be stably fixed to the top surface of the platform S (scaffolding) with a minimum number of independent mounting fixtures 6.

[0056] Hereinafter, a method for carrying out the present invention will be described in detail with reference to the drawings. The ...

[0057] <<Implementation Method>> First, the user places the base Y on the top surface of the platform S. At this time, as shown in FIG. 6(a), it is preferable that the base Y is positioned approximately directly above the beam B, and further, the plate 4 is placed at an angle to the longitudinal direction of the beam B.

[0058] Next, the user inserts the independent mounting fixture 6, with the washer and nut 3 already threaded through the main pile portion 61, from the tip (holding portion 621) of the locking portion 62 into the mounting hole 41 and the gaps in the mesh of the platform S, penetrating partway through the main pile portion 61. At this time, by inserting the auxiliary wire W through the insertion portion 63 beforehand before performing the work, the independent mounting fixture 6 can be prevented from falling. After that, the user locks the locking portion 62 to the lower end of the beam B.

[0059] Next, the user tightens the nuts 3 to hold the beam B between the locking portion 62 and the plate 4, and then attaches the base portion Y. The user repeats the above steps for the required number of independent mounting fixtures 6 (preferably at least two or more), and fixes the base portion Y so that it does not slip off the platform S (top surface of the scaffolding). This work method allows the user to perform all work on the platform S, improving safety. The user then attaches the structure to the mounts 5 of the base portion Y, as shown in Figures 6(a) and 6(b).

[0060] When the user wants to remove the fixture X and the foundation Y, he or she removes the fixture X and the foundation Y from the beam B and the platform S by following the steps above in reverse. [Explanation of symbols]

[0061] X Mounting Bracket Y Foundation 1 First mounting fixture 11 Main pile section 111 Engagement part 12 Locking part 121 Protrusion 13 Insertion part 2 Second mounting fixture 21 Main pile section 211 Engagement part 22 Locking portion 221 Insertion hole 23 Insertion part 3 nuts 4 plates 41 Mounting hole 5 Mount 6 Independent mounting fixture 61 Main pile section 611 Engagement part 62 Locking part 621 Holding part 63 Insertion part A axis B beam C Connection P Crane Boom S Platform W Auxiliary wire

Claims

1. A mounting device that can fix the foundation of a structure to the top surface of a scaffolding, A main pile portion that can penetrate the top surface of the scaffolding and a locking portion that expands one end of the main pile portion in one direction, The main pile portion has an engagement portion extending from the other end around the axial direction.

2. A first mounting fixture and a second mounting fixture are combined, The first attachment tool and the second attachment tool have connecting portions at the locking portions that allow them to be connected to each other. The fixture of claim 1 .

3. The connection portion includes a protrusion in the first mounting fixture and a through hole in the second mounting fixture.

3. The fixture of claim 2.

4. The through holes are provided in a plurality in the length direction of the locking portion.

4. The fixture of claim 3.

5. Two or more of the protrusions and two or more of the through holes are provided at equal intervals, 5. The fixture of claim 4.

6. An insertion portion is further provided in a direction intersecting the axial direction at the other end side of the main pile portion, The fixture of claim 1 .

7. The engaging portion has a retaining portion facing the side surface of the main pile portion at a predetermined distance. The fixture of claim 1 .

8. The main pile portion and the locking portion are sized to hold standardized steel beams. The fixture of claim 1 .

9. A temporary foundation comprising a fitting according to any one of claims 1 to 8.

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