Assembly method

Abstract

To provide an assembly jig and assembly method that further enable easy and quick assembling of structures.SOLUTION: An assembly jig for connecting an upper structure having upper columnar portions arranged at four corners and a lower structure having four lower columnar portions, is provided with: a guide portion that extends vertically from the tip and guides positions of the upper columnar portions so that the tips are aligned in a straight line when the upper columnar portions are butted against the lower columnar portions from above; and an engagement portion engaging the guide portion. Dimensions of the guide portion in the vertical direction are different between pairs of guide portions adjacent to each other at the four corners.SELECTED DRAWING: Figure 3

Description

Technical Field

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[0001] The present disclosure relates to set a cubic method.

Background Art

[0002] When performing construction work, it is common to assemble scaffolds along the outer walls and columns of buildings. The scaffold is constructed by combining a plurality of pipes with each other. In recent years, there has also been an increasing number of examples in which scaffold structures pre-assembled integrally in a block shape are sequentially connected in the vertical direction to construct a high-rise scaffold.

[0003] Here, when connecting the above scaffold structures in the vertical direction, it is necessary to accurately position and abut the columns of the lower structure and the columns of the upper structure. For example, even when connecting four columns at a time, a corresponding accuracy is required for the positioning work. Therefore, as shown in Patent Document 1 below, a method of attaching a funnel-shaped guide member that surrounds the lower column has been proposed. It is said that the tip of the upper column is guided by the inner surface of the guide member, and the upper column can be abutted against the lower column so as to be aligned linearly.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, even when using the above guide member, there is still a problem that the work of inserting at least four columns into the guide member simultaneously from the vertical direction requires time and precision. ​​This disclosure was made to solve the above problems, and further enables the assembly of structures more easily and in a shorter time. set The purpose is to provide a method for calculation. [Means for solving the problem]

[0007] To solve the above problems, the assembly related to this disclosure method This includes an upper structure having upper columnar sections extending vertically and positioned at four corners, and an assembly jig for connecting a lower structure having four lower columnar sections connected vertically to the upper columnar sections. An assembly method for assembling the upper structure and the lower structure using the assembly jig, the assembly jig is The upper columnar portion and the lower columnar portion each have a guide portion that extends vertically from the tip of either the upper columnar portion or the lower columnar portion, and which guides the position of the upper columnar portion so that the tips of the upper columnar portion are aligned in a straight line vertically when the upper columnar portion is abutted against the lower columnar portion from above, and a fitting portion that is provided at the tip of the other of the upper columnar portion or the lower columnar portion and fits into the guide portion, wherein the vertical dimensions of the guide portion differ between pairs of adjacent guide portions at the four corners. The method includes the steps of: preparing the lower structure; attaching the guide portion to at least one of the upper columnar portion and the lower columnar portion; suspending the upper structure with the aircraft and transporting it to the position of the lower structure; moving the upper structure downward and connecting the upper columnar portion and the lower columnar portion while being guided by the guide portion; and moving the aircraft away from the upper structure.

[0008] The assembly method relating to this disclosure is an assembly method for assembling the upper structure and the lower structure using the above-described assembly jig, comprising the steps of: preparing the lower structure; attaching the guide portion to at least one of the upper columnar portion and the lower columnar portion; suspending the upper structure with an aircraft and transporting it to the position of the lower structure; moving the upper structure downward and connecting the upper columnar portion and the lower columnar portion while being guided by the guide portion; and moving the aircraft away from the upper structure. Includes. [Effects of the Invention]

[0009] According to this disclosure, it is possible to provide an assembly jig and an assembly method that enable the assembly of structures more easily and in a shorter amount of time. [Brief explanation of the drawing]

[0010] [Figure 1] This is a schematic diagram showing the configuration of a scaffolding structure according to the first embodiment of this disclosure. [Figure 2] This figure shows the configuration of the assembly jig according to the first embodiment of this disclosure. [Figure 3] This is a perspective view showing the dimensional relationship of the guide portion according to the first embodiment of this disclosure. [Figure 4] This is a flowchart showing each step of the assembly method according to the first embodiment of this disclosure. [Figure 5] This is a cross-sectional view showing the configuration of the guide section according to the second embodiment of this disclosure. [Figure 6] This is an exploded view showing the configuration of the guide section according to the second embodiment of this disclosure. [Figure 7] This is a perspective view showing a first modified example of an assembly jig common to each embodiment of the present disclosure. [Figure 8] This figure shows a second modified example of the assembly jig common to each embodiment of the present disclosure. [Modes for carrying out the invention]

[0011] <First Embodiment> (Structural composition) Hereinafter, the assembly jig 1 and assembly method according to the first embodiment of this disclosure will be described with reference to Figures 1 to 4. The assembly jig 1 and assembly method according to this embodiment are used to assemble a structure 2 (hereinafter simply referred to as "structure 2") used as scaffolding at a construction site.

[0012] As shown in Figure 1, the structure 2 comprises an upper structure 11, a lower structure 12, a joint pin 13, and an assembly jig 1. The upper structure 11 and the lower structure 12 are each formed into rectangular block shapes by combining iron pipes in a grid or diagonal pattern.

[0013] The upper structure 11 has a block-shaped upper structure main body 31 and four upper columnar parts 32 extending downward in the vertical direction from four corner parts of the upper structure main body 31. The lower structure 12 has a block-shaped lower structure main body 41 and four lower columnar parts 42 extending upward from four corner parts of the lower structure main body 41.

[0014] In order to correspond to high-rise buildings, the upper structure 11 may be sequentially connected on the lower structure 12. The assembly jig 1 and the joint pin 13 according to the present embodiment are used to connect the upper columnar part 32 and the lower columnar part 42 in such a case.

[0015] (Configuration of the assembly jig) As shown in FIG. 2, the assembly jig 1 has a pointed member 51 as a guide part and a fitting part 6. The pointed member 51 is attached to the upper end of the lower columnar part 42 via the joint pin 13. The joint pin 13 has a columnar shape with a smaller diameter than the lower columnar part 42 and can connect the lower columnar part 42 and the upper columnar part 32 by being inserted into the pipe-shaped upper columnar part 32. A lock mechanism (not shown) is provided on the joint pin 13, and it is possible to switch between a state where these columnar parts are connected and fixed and a separated state.

[0016] The pointed member 51 protrudes upward from the tip of the joint pin 13. The cross-sectional shape of the pointed member 51 is circular as an example. The pointed member 51 has a shape that gradually tapers upward. In other words, the outer diameter of the pointed member 51 gradually decreases upward. As long as it has such a tapered shape, the cross-sectional shape of the pointed member 51 may be rectangular or polygonal.

[0017] As shown in Figure 3, the vertical dimensions of the pointed members 51 provided at the four corners differ between pairs of adjacent pointed members 51. More specifically, if the length of one pointed member 51 is set to 1, the length of the pointed member 51 located diagonally opposite to that pointed member 51 is 2. The lengths of the remaining two pointed members 51 are 1.5. Even more specifically, the difference in length between the longest and shortest pointed member 51 is 3 cm to 50 cm, more preferably 10 cm to 30 cm. Most preferably, the difference in length is 15 cm to 20 cm. In other words, these differences in the lengths of the pointed members 51 are not due to manufacturing or assembly errors, but are arbitrarily set during manufacturing.

[0018] As shown in Figure 2, the lower end of the upper columnar section forms a fitting section 6. The fitting section 6 is a part of the upper columnar section including its tip. The pointed member 51 is inserted from below into the space inside this fitting section 6. In detail, first, the fitting section 6 of the corresponding corner is inserted through the longest of the four pointed members 51. This positions one of the four corners. At this time, the pointed member 51 is not fully inserted into the fitting section 6.

[0019] Next, the second longest pointed member 51, located diagonally opposite, is inserted into the corresponding corner fitting portion 6. This completes the positioning of the two corners. Subsequently, the remaining two pointed members 51 are inserted into their respective fitting portions 6. At this point, all four pointed members 51 are fully inserted into the fitting portions 6. This completes the connection of the upper columnar portion 32 and the lower columnar portion 42 at the four corners.

[0020] (Assembling method) Next, the details of the method for assembling the structure 2 using the assembly jig 1 described above will be explained. As shown in Figure 4, this assembly method includes the steps of: step S1 of preparing the lower structure 12; step S2 of attaching the pointed member 51 as a guide part 5 to the lower columnar part 42; step S3 of transporting the pre-prepared upper structure 11 above the lower structure 12 using an aircraft; step S4 of connecting the lower columnar part 42 and the upper columnar part 32; and step S5 of moving the aircraft away from the upper structure 11.

[0021] In step S1, as described above, multiple pipes are combined to assemble a lower structure 12 having predetermined dimensions. At this time, the lower columnar portion 42 is also formed. In step S2, the pointed members 51 described above are attached to each of the lower columnar portions 42. At this time, at the four corners, pointed members 51 of different lengths are attached between pairs of adjacent corners. Preferably, as described above, the difference in length of the pointed members 51 is maximized between pairs of diagonally located corners.

[0022] Next, in step S3, an unmanned aircraft such as a drone is used to transport the upper structure 11 above the lower structure 12 while it is suspended. The aircraft is then made to hover with the upper structure 11 positioned above the lower structure 12. After that, the four pointed members 51 and the fitting parts 6 are sequentially positioned and connected according to the procedure described above (step S4). Finally, the aircraft is detached from the upper structure 11 and moved to a predetermined position (step S5). With this, all steps related to the assembly method of structure 2 are completed.

[0023] (Effects and Benefits) Conventionally, when connecting the four upper columnar sections 32 and the lower columnar sections 42, it was necessary to position and connect all four simultaneously. This required precision and time for the work, potentially leading to longer construction periods and increased costs. To solve these problems, this embodiment employs the assembly jig 1 described above and the assembly method using it.

[0024] According to the above configuration, the dimensions of the pairs of adjacent guide parts 5 (pointed members 51) at each of the four corners are different. This allows for the initial positioning of one of the guide parts 5 and the fitting part 6, after which the positions of the remaining guide parts 5 and fitting parts 6 can be adjusted. In other words, it is possible to create a difference in the time required for positioning at each of the four corners. Therefore, the required precision for positioning at one corner is relaxed compared to when positioning is performed simultaneously at all four corners. Consequently, these remaining guide parts 5 and fitting parts 6 can be connected even more easily. As a result, the cost and time required for assembling the structure 2 can be significantly reduced.

[0025] Furthermore, with the above configuration, since the guide portion 5 is a tapered pointed member 51, when the fitting portion 6 is inserted through only a part of the tip of the pointed member 51, radial play (gap) is formed between the fitting portion 6 and the pointed member 51. As a result, once the positioning of one guide portion 5 and fitting portion 6 has been determined, the position of the remaining guide portion 5 and fitting portion 6 can be further precisely adjusted by utilizing this play. Therefore, even if there are variations in the assembly accuracy of, for example, the upper columnar portion 32 and the lower columnar portion 42, these errors can be absorbed, and the structure 2 can be assembled efficiently.

[0026] Furthermore, with the above configuration, after positioning one guide portion 5 and fitting portion 6, the other guide portion 5 and fitting portion 6 located diagonally opposite to that one guide portion 5 are then positioned. By positioning the furthest separated pair of guide portion 5 and fitting portion 6 first, the margin of error for the remaining guide portion 5 and fitting portion 6 can be reduced. As a result, positioning the four guide portions 5 and fitting portions 6 can be performed more easily and quickly.

[0027] Furthermore, according to the above method, since the assembly jig 1 is used, even when using a device that is relatively difficult to maintain the stability of its attitude and position in the air, such as an aircraft (drone), the upper columnar part 32 and the lower columnar part 42 can be easily and quickly positioned and connected. On the other hand, when using lifting equipment such as a crane, while such control of attitude and position is relatively easy, increased work costs and larger occupied space become problems. In contrast, when using an aircraft, it is possible to carry out assembly work efficiently and at low cost without encountering these problems.

[0028] The first embodiment of this disclosure has been described above. It is possible to make various changes and modifications to the above configuration and method without departing from the gist of this disclosure. For example, the first embodiment described an example of connecting an upper structure 11 having four corners to a lower structure 12. However, depending on the specifications of the structure 2, the structure 2 may be constructed by connecting a plurality of lower structures 12 to a plurality of upper structures 11. Furthermore, the first embodiment described an example in which a pointed member 51 is provided on the lower columnar portion 42. However, it is also possible to adopt a configuration in which the pointed member 51 is attached to the upper columnar portion 32. In other words, the pointed member 51 only needs to be provided on either the upper columnar portion 32 or the lower columnar portion 42.

[0029] <Second Embodiment> Next, a second embodiment of the present disclosure will be described with reference to Figures 5 and 6. Components similar to those in the first embodiment are denoted by the same reference numerals, and detailed descriptions are omitted. As shown in Figure 5, in this embodiment, an enlarged diameter pipe member 52 is provided on the lower columnar portion 42 as a guide portion 5.

[0030] The diameter-expanding pipe member 52 has a base portion 53 and a diameter-expanding portion 54. The base portion 53 extends downward from the tip of the lower columnar portion 42 (the central part of the joint pin 13). The base portion 53 is a straight tube that surrounds the lower columnar portion 42 from the outer circumference. In other words, the inner diameter of the base portion 53 is set to be slightly larger than the outer diameter of the lower columnar portion 42. The diameter-expanding portion 54 is funnel-shaped and is provided integrally with the base portion 53. Specifically, the inner and outer circumferential surfaces of the diameter-expanding portion 54 gradually expand in diameter as they extend upward from the upper end of the base portion 53. Therefore, a conical space is formed inside the diameter-expanding portion 54. The tip of the joint pin 13 protrudes upward within this space.

[0031] As shown in Figure 6, the diameter-expanding pipe member 52 is configured to be divided into multiple parts (two, for example) in the circumferential direction. In other words, one diameter-expanding pipe member 52 has two divided bodies 55. Each divided body 55 has a divided body body 56 that forms the base portion 53 and half of the diameter-expanding portion 54, and a plurality of connecting parts 57 integrally provided on this divided body body 56. The connecting parts 57 protrude outward from the edge of the divided body body 56. In the example in Figure 6, two connecting parts 57 are provided on each edge, spaced apart in the vertical direction. The diameter-expanding pipe member 52 is constructed by inserting bolts through the connecting parts 57 and tightening them with a pair of divided bodies 55 butted together.

[0032] In this embodiment as well, similar to the first embodiment described above, the lengths of the enlarged diameter pipe members 52, which serve as guide portions 5, differ between the four corner portions. More specifically, one example is to create a difference in the length of the enlarged diameter pipe members 52 by varying the vertical dimensions of the base portion 53. Alternatively, the length of the enlarged diameter pipe members 52 may be created by varying the vertical dimensions of the enlarged diameter portion 54.

[0033] (Effects and Benefits)

[0034] According to the above configuration, when inserting either the tip of the upper columnar portion 32 or the lower columnar portion 42 into the diameter-expanding pipe member 52, the tip is guided along the inner surface of the diameter-expanding pipe member 52 as insertion progresses. In other words, in the example of Figure 5, as insertion progresses downward, the tips of the lower columnar portion 42 and the upper columnar portion 32 are positioned to align in a straight line. After that, when the tip is fully inserted to the lower end of the base portion 53, the tips of the lower columnar portion 42 and the upper columnar portion 32 are aligned in a straight line and connected to each other via the joint pin 13. As a result, similar to the first embodiment, the connection work between the upper structure 11 and the lower structure 12 can be performed easily and quickly. In particular, because a margin of error can be given to the initial positioning, even when the upper structure 11 is suspended using an aircraft, excessive accuracy in position and attitude is not required. As a result, assembly work can be carried out even more efficiently.

[0035] Furthermore, according to the above configuration, the diameter-expanding pipe member 52 is composed of multiple divided parts 55. Therefore, after the connection between the upper columnar part 32 and the lower columnar part 42 is completed, the diameter-expanding pipe member 52 can be removed afterward by dividing it in the circumferential direction. This avoids the reduction of workspace caused by the remaining diameter-expanding pipe member 52, thereby improving safety during work. In addition, the removed diameter-expanding pipe member 52 can be reused in other locations or at other work sites. This reduces the cost required for the work.

[0036] The embodiments of this disclosure have been described above. It is possible to make various changes and modifications to the above configurations without departing from the gist of this disclosure. For example, as a first modification common to all embodiments, the configuration shown in Figure 7 can be adopted. In the example shown in Figure 7, pointed members 51 are used at two corners of the guide portion 5, and enlarged diameter pipe members 52 are used at the remaining two corners. Furthermore, as a second modification, as shown in Figure 8, it is possible to adopt a configuration in which a pointed member 51 is provided on the upper columnar portion 32 while an enlarged diameter pipe member 52 is provided on the lower columnar portion 42. In this case, a part including the tip of the lower columnar portion 42 forms the fitting portion 6. Conversely, it is also possible to adopt a configuration in which a pointed member 51 is provided on the lower columnar portion 42 while an enlarged diameter pipe member 52 is provided on the upper columnar portion 32. These configurations can also obtain the same effects as those described above.

[0037] <Note> The assembly jig 1 and assembly method described in each embodiment can be understood, for example, as follows.

[0038] (1) The assembly jig 1 according to the first embodiment is an assembly jig 1 for connecting an upper structure 11 having upper columnar parts 32 that extend vertically and are arranged at four corners, and a lower structure 12 having four lower columnar parts 42 that are connected to the upper columnar parts 32 from the vertical direction, comprising: a guide part 5 that extends vertically from the tip of either the upper columnar part 32 or the lower columnar part 42 and guides the position of the upper columnar part 32 so that the tips of the upper columnar part 32 are aligned in a straight line in the vertical direction when the upper columnar part 32 is abutted against the lower columnar part 42 from above; and a fitting part 6 provided at the tip of the other of either the upper columnar part 32 or the lower columnar part 42 and fitting into the guide part 5, wherein the vertical dimensions of the guide part 5 differ between pairs of adjacent guide parts 5 at the four corners.

[0039] According to the above configuration, the dimensions of the pairs of adjacent guide sections 5 at each of the four corners are different. This allows the position of the remaining guide section 5 and the fitting section 6 to be adjusted after connecting the fitting section 6 to any one of the guide sections 5. Therefore, these remaining guide sections 5 and fitting sections 6 can be easily connected.

[0040] (2) The assembly jig 1 according to the second embodiment is the assembly jig 1 of (1), wherein at least a portion of the plurality of guide portions 5 is a pointed member 51 that gradually tapers from one of the upper columnar portion 32 and the lower columnar portion 42 toward the other.

[0041] With the above configuration, since the guide portion 5 is a tapered pointed member 51, when the fitting portion 6 is inserted through only a part of the tip of the pointed member 51, play (gap) is formed between the fitting portion 6 and the pointed member 51. As a result, once the positioning of one guide portion 5 and fitting portion 6 is established, the position of the remaining guide portion 5 and fitting portion 6 can be adjusted using this play.

[0042] (3) The assembly jig 1 according to the third embodiment is the assembly jig 1 of (1) or (2), wherein at least a portion of the plurality of guide portions 5 is cylindrical and is an expanding diameter pipe member 52 that gradually expands in diameter from one of the upper columnar portion 32 and the lower columnar portion 42 toward the other.

[0043] With the above configuration, when inserting either the tip of the upper columnar portion 32 or the lower columnar portion 42 into the diameter-expanding pipe member 52, the tip is guided to the inner surface of the diameter-expanding pipe member 52 as the insertion progresses. Once the tip is fully inserted, the tips of the lower columnar portion 42 and the upper columnar portion 32 can be aligned in a straight line.

[0044] (4) The assembly jig 1 according to the fourth embodiment is the assembly jig 1 of (3), wherein the diameter-expanding pipe member 52 can be divided into a plurality of parts in the circumferential direction.

[0045] According to the above configuration, after the connection between the upper columnar portion 32 and the lower columnar portion 42 is completed, the enlarged diameter pipe member 52 can be removed afterward by dividing it in the circumferential direction. This improves safety at the work site and allows the enlarged diameter pipe member 52 to be reused at other locations or work sites.

[0046] (5) The assembly jig 1 according to the fifth embodiment is the assembly jig 1 according to any one embodiment of (1) to (4), wherein the difference in dimensions of the guide portion 5 in the vertical direction is greatest between the guide portions 5 located on diagonal lines at the four corners.

[0047] According to the above configuration, after positioning one guide portion 5 and fitting portion 6, the other guide portion 5 and fitting portion 6 located diagonally opposite to that one guide portion 5 are then positioned. In this way, by first positioning the pair of guide portions 5 and fitting portions 6 that are furthest apart, it becomes even easier to position the remaining guide portions 5 and fitting portions 6.

[0048] (6) The assembly method according to the sixth embodiment is an assembly method for assembling the upper structure 11 and the lower structure 12 using an assembly jig 1 according to any one embodiment of (1) to (5), and includes the steps of: preparing the lower structure 12; attaching the guide portion 5 to at least one of the upper columnar portion 32 and the lower columnar portion 42; suspending the upper structure 11 with an aircraft and transporting it to the position of the lower structure 12; moving the upper structure 11 downward and connecting the upper columnar portion 32 and the lower columnar portion 42 while being guided by the guide portion 5; and moving the aircraft away from the upper structure 11.

[0049] According to the above method, since the assembly jig 1 is used, even when using a device that is relatively difficult to maintain attitude and positional stability, such as an aircraft (drone), the upper columnar part 32 and the lower columnar part 42 can be easily and quickly positioned and connected. [Explanation of symbols]

[0050] 1… Assembly jig 2...Structure 5… Guide section 6…Matching part 11...Upper structure 12...Lower structure 13… Joint pin 31...Upper structure body 32...Upper columnar part 41...Lower structure body 42…Lower columnar part 51...Pointed member 52... Diameter-expanding pipe member 53...Base 54…Expanded diameter part 55...divided body 56...Main body of the divided section 57…Connection part

Claims

1. An assembly method for assembling an upper structure and a lower structure using an assembly jig for connecting an upper structure having upper columnar parts extending in the vertical direction and positioned at four corners, and a lower structure having four lower columnar parts connected to the upper columnar parts from the vertical direction, wherein The aforementioned assembly jig is A guide portion extends vertically from the tip of either the upper columnar portion or the lower columnar portion, and guides the position of the upper columnar portion so that the tips of the upper columnar portion are aligned in a straight line vertically when the upper columnar portion is abutted against the lower columnar portion from above, A fitting portion is provided at the other end of either the upper columnar portion or the lower columnar portion, and fits into the guide portion, Equipped with, The vertical dimensions of the guide portion differ between pairs of adjacent guide portions at the four corners. The steps include preparing the aforementioned lower structure, The steps include: attaching the guide portion to at least one of the upper columnar portion and the lower columnar portion; The steps include: suspending the upper structure from the aircraft and transporting it to the position of the lower structure; The steps include moving the upper structure downward and connecting the upper columnar portion and the lower columnar portion while being guided by the guide portion, The steps include: moving the aircraft away from the upper structure, Assembly method including.

2. The assembly method according to claim 1, wherein at least a portion of the plurality of guide portions are pointed members that gradually taper from one of the upper columnar portion and the lower columnar portion toward the other.

3. The assembly method according to claim 1 or 2, wherein at least a portion of the plurality of guide portions is cylindrical and is an expanding diameter pipe member that gradually widens from one of the upper columnar portion and the lower columnar portion toward the other.

4. The assembly method according to claim 3, wherein the enlarged diameter pipe member is divided into a plurality of parts in the circumferential direction.

5. The assembly method according to claim 1 or 2, wherein the difference in dimensions of the guide portion in the vertical direction is greatest between the guide portions located on diagonal lines at the four corners.

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