Fitting jig

Abstract

To provide a fitting jig capable of easily adjusting the positions of a plurality of columns constituting a split column at the time of assembling, capable of excellently fitting the plurality of columns, and capable of improving the safety and working efficiency of a worker.SOLUTION: A configuration of a fitting jig according to the present invention is a fitting jig 100 used for fitting a split column 10 including a plurality of columns, the fitting jig including a cylindrical hopper 110 attached to a lower end of an upper column (upper column 12), and a pole 140 attached to a vicinity of an upper end of a lower column (lower column 14) and extending upward, wherein a cross-sectional area of the hopper 110 narrows toward the upper column in an upward direction, and the upper column is guided to a fitting position with the lower column by inserting the pole 140 into the hopper 110.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a fitting jig used to fit a split column consisting of multiple columns. [Background technology]

[0002] In recent years, segmented composite columns (hereafter referred to as segmented columns), which consist of a concrete column that serves as a base and a cylindrical steel pipe that is connected to the top of it, have become increasingly popular. The segmented columns require the work of connecting multiple columns, which was not done in the installation of conventional reinforced concrete columns. In the following explanation, whether it is a two-segment column or a three-segment column, the column that has already been erected will be referred to as the "lower column (or lower column)," and the column that will be inserted on top of the lower column will be referred to as the "upper column (or upper column)."

[0003] For example, Patent Document 1 discloses a "divided column erection device for connecting an upper column to a lower column when erecting a divided column comprising an upper column and a lower column." In Patent Document 1, a division assembly device is attached to an already installed lower column, and the upper column is lifted up with a wire and assembled to the lower column.

[0004] In addition, conventionally, the upper pole is lifted by winding up a wire with the winch of a pole erection vehicle or aerial work vehicle, and then assembled to the lower pole. In either case, assembly work at a high altitude is required by workers. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Utility Model Registration No. 3215144 Summary of the Invention [Problem to be solved by the invention]

[0006] When lifting the upper pillar with a rope and assembling it to the lower pillar as described above, the worker lowers the upper pillar while adjusting its position relative to the lower pillar, and then fits the ends of the upper and lower pillars together. At this time, it is necessary to align the position of the lower opening of the upper pillar with the upper end of the lower pillar. However, the upper pillar is heavy, and it is suspended by a single wire, making quick and precise movements difficult. In addition, it is not possible to simultaneously see the bottom of the upper pillar and the top end of the lower pillar. This makes the task of fitting them together extremely complicated and inefficient.

[0007] The present invention has been developed in consideration of these points, and aims to provide a fitting jig that allows easy position adjustment of the multiple columns that make up a split column when assembling them, enables the multiple columns to be fitted together well, and improves worker safety and work efficiency. [Means for solving the problem]

[0008] In order to solve the above problems, a typical configuration of a fitting jig according to the present invention is a fitting jig used to fit split columns consisting of multiple columns, and is equipped with a cylindrical hopper attached to the lower end of the upper column, and a pole attached near the upper end of the lower column and extending upward, the cross-sectional area of ​​the hopper narrowing as it moves upward toward the upper column, and by inserting the pole into the hopper, the upper column is guided into a fitting position with the lower column.

[0009] In order to solve the above problems, another configuration of a fitting jig according to the present invention is a fitting jig used to fit split columns consisting of multiple columns, characterized in that it has two poles attached near the upper end of the lower column and extending upward, the two poles extending approximately parallel to each other with their tips bent in directions away from each other.

[0010] In order to solve the above problem, another configuration of the fitting jig of the present invention is a fitting jig used to fit split columns consisting of multiple columns, and is characterized in that it has a cylindrical portion that fits into the opening at the upper end of the lower column, and a guide portion that extends upward from the cylindrical portion, and the guide portion has a conical shape whose cross-sectional area narrows as it extends upward. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide a fitting jig that makes it easy to adjust the position of the multiple columns that make up the split column when assembling them, that can fit the multiple columns together well, and that can improve worker safety and work efficiency. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 2 is a diagram illustrating a work site where a split column is assembled using the fitting jig of the first embodiment. [Figure 2] FIG. 10 is a diagram illustrating a divided pillar. [Figure 3] FIG. 2 is a diagram illustrating a fitting jig according to the first embodiment. [Figure 4] FIG. 2 is a diagram illustrating a fitting jig according to the first embodiment. [Figure 5] 10A and 10B are diagrams illustrating the attachment of a fitting jig. [Figure 6] FIG. 10 is a diagram illustrating how a pole is inserted into a hopper. [Figure 7] FIG. 10 is a diagram illustrating a work site where split columns are assembled using the fitting jig of the second embodiment. [Figure 8] 10A and 10B are diagrams illustrating a fitting jig according to a second embodiment. [Figure 9] FIG. 10 is a diagram illustrating a work site where split columns are assembled using the fitting jig of the third embodiment. [Figure 10] 10A and 10B are diagrams illustrating a fitting jig according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Dimensions, materials, and other specific values ​​shown in the embodiments are merely examples for facilitating understanding of the invention and, unless otherwise specified, do not limit the present invention. In this specification and drawings, elements having substantially the same functions and configurations are designated by the same reference numerals to avoid redundant explanation, and elements not directly related to the present invention are not shown.

[0014] (First embodiment) Fig. 1 is a diagram illustrating a work site where a split column 10 is assembled using the fitting jig 100 of the first embodiment. Fig. 2 is a diagram illustrating the split column 10. As shown in Fig. 2, the split column 10 is composed of an upper column 12, a lower column 14, and a base column 16. The upper column 12 and the lower column 14 are cylindrical steel pipes, and the base column 16 is a concrete cylinder. The inner surface of the lower end of the upper column 12 and the outer surface of the upper end of the lower column 14 form a joint, and the inner surface of the lower end joint of the upper column 12 and the outer surface of the upper end joint of the lower column 14 form tapered surfaces.

[0015] As shown in Figure 1, in this embodiment, a base pillar 16 (see Figure 2) and a lower pillar 14 (lower pillar) are already erected, and an upper pillar 12 (upper pillar) is fitted into the lower pillar 14. However, this configuration is merely an example and is not limited to this. For example, the present invention can also be applied to a case where the lower pillar 14 is fitted into the base pillar 16.

[0016] At a work site 20 shown in Fig. 1, a worker P is riding in a bucket 30 of an aerial work vehicle (not shown in its entirety) to engage a plurality of divided pillars 10. The upper pillar 12 is lifted up by a wire 32 and a winch 36.

[0017] 3 and 4 are diagrams illustrating a fitting jig 100 according to the first embodiment. The fitting jig 100 according to the first embodiment is used to fit a split column 10 consisting of multiple columns (a base column 16, an upper column 12, and a lower column 14). The fitting jig 100 according to the first embodiment includes a hopper 110 shown in FIG. 3 and a pole 140 shown in FIG. 4.

[0018] Figure 3 is a diagram illustrating the hopper 110. Figure 3(a) is a perspective view of the hopper 110 observed from above, and Figure 3(b) is a perspective view of the hopper 110 observed from below. The hopper 110 shown in Figures 3(a) and (b) is a cylindrical member attached to the lower end of the upper pillar (upper pillar 12, see Figure 1).

[0019] The cross-sectional area of ​​the hopper 110 narrows upward as it approaches the upper pillar (upper pillar 12), i.e., it has a roughly duct shape, and has an opening 112 on the bottom and an opening 114 on the top. A handle 110a is attached to the outer surface of the hopper 110 so that an operator can grip it.

[0020] The hopper 110 is supported by a bracket 120 and abuts against the lower end of the upper pole 12 via the bracket 120. A ratchet buckle 122 that holds a belt 130 (lashing belt) is attached to the bracket 120. The belt 130 is wound around the upper pole 12, and a terminal fitting 132 at the tip is hooked onto a hook 134. Then, by winding up the belt 130 with the ratchet buckle 122, the bracket 120 and therefore the hopper 110 are fastened to the upper pole 12.

[0021] FIG. 4 is a diagram illustrating the pole 140. FIGS. 4(a) and 4(b) are perspective views of the pole 140 observed from different angles. The pole 140 shown in FIGS. 4(a) and 4(b) is a rod-shaped member that is attached near the upper end of the lower pillar (lower pillar 14, see FIG. 1) and extends upward. An adjustment ball 142 is attached to the tip of the pole 140. A handle 140a is also attached to the pole 140 so that the worker can grasp it.

[0022] The pole 140 is supported by a bracket 150 and abuts against the vicinity of the upper end of the lower post 14 via the bracket 150. A ratchet buckle 152 that holds a belt 160 (lashing belt) is attached to the bracket 150. The belt 160 is wound around the lower post 14, and the terminal fitting 162 at the tip is hooked onto a hook 164. Then, by winding up the belt 160 with the ratchet buckle 152, the bracket 150 and therefore the pole 140 are fastened to the lower post 14.

[0023] 5A and 5B are diagrams illustrating the installation of the fitting jig 100. First, as shown in FIG. 5A, the upper pole 12 is placed on a sleeper 40 placed on the ground G and laid on its side. Then, the bracket 120 of the hopper 110 is brought into contact with the lower end of the upper pole 12. Then, the bracket 120 is fastened to the upper pole 12 with a belt 130. Also, as shown in FIG. 5B, the bracket 150 of the pole 140 is brought into contact with the vicinity of the upper end of the existing lower pole 14. Then, the bracket 150 is fastened to the lower pole 14 with a belt 160.

[0024] Figure 6 is a diagram illustrating how the pole 140 is inserted into the hopper 110. When inserting the pole 140 into the hopper 110, first, as shown in Figure 1, a sling belt 34 (or a sling wire) for connecting to the wire 32 is wound around the upper pole 12 at a midpoint. Then, the wire 32 is wound up by the winch 36 of the aerial work platform, and the upper pole 12 is lifted up.

[0025] After the upper pillar 12 is lifted up until it is positioned above the lower pillar 14 as shown in Figure 6(a), the upper pillar 12 is brought close to the lower pillar 14 so that the tip of the pole 140 is positioned inside the hopper 110 through the opening 112 on the underside of the hopper 110.

[0026] Then, the upper column 12 is lowered as shown in Figure 6(b). As a result, the adjustment ball 142 at the tip of the pole 140 slides along the inner surface of the hopper 110 and protrudes from the opening 114 on the top surface of the hopper 110. This guides the upper column 12 to a position where it can fit with the lower column 14. After that, the tilted upper column 12 is brought into a vertical position. Once the upper column 12 is positioned directly above the lower column 14, the upper column 12 is lowered further downward. This causes the hopper 110 to be guided by the pole 140, and the upper column 12 fits into the lower column 14 as shown in Figure 6(c).

[0027] As described above, with the fitting jig 100 of the first embodiment, inserting the pole 140 into the hopper 110 guides the upper pillar into a fitting position with the lower pillar. This makes it easy to adjust the positions of the multiple pillars that make up the split pillar 10 when assembling them, eliminating the need for complicated work by workers. Therefore, the multiple pillars can be fitted together satisfactorily, improving worker safety and work efficiency.

[0028] (Second embodiment) Fig. 7 is a diagram illustrating a work site where the split column 10 is assembled using the fitting jig 200 of the second embodiment. Fig. 8 is a diagram illustrating the fitting jig 200 according to the second embodiment. In the following embodiments, the elements already described in the first embodiment are denoted by the same reference numerals and will not be described again.

[0029] The fitting jig 200 of the second embodiment is used to fit a split column 10 made up of multiple columns, and is configured to include two poles 210. The two poles 210 are attached near the upper end of the lower column (base column 16) (see FIG. 7) and are members that extend upward.

[0030] As shown in Figure 8, two poles 210 are supported by brackets 220 and extend substantially parallel to each other. Tips 212 of the poles 210 are bent in directions away from each other. Note that the pole tips 212 may also be bent obliquely in directions away from the column to which they are attached.

[0031] A ratchet buckle 222 that holds a belt 230 (lashing belt) is attached to the bracket 220. The belt 230 is wound around the lower pole 14, and the end fitting 232 at the tip is hooked onto a hook 234. Then, by winding up the belt 230 with the ratchet buckle 222, the bracket 220 and therefore the pole 210 are fastened to the lower pole 14.

[0032] 7 illustrates a configuration in which the lower pillar is the base pillar 16 and the upper pillar is the lower pillar 14, with the lower pillar 14 fitted onto the base pillar 16. First, a sling belt 34 (which may be a sling wire) for connecting to the wire 32 is wound around the lower pillar 14 at a midpoint. Then, the wire 32 is wound up by a winch 36 of the aerial work platform, and the lower pillar 14 is lifted up.

[0033] 7, once the lower pillar 14 is lifted up to a position above the base pillar 16, the lower pillar 14 is brought into contact with the two poles 210. At this time, as described above, the tips of the two poles 210 are bent in directions that separate them from each other, so that the lower pillar 14 can be received over a wide area.

[0034] Once the lower column 14 is brought into contact with the two poles 210, the tilted lower column 14 is brought into a vertical position and lowered along the two poles 210. As a result, the lower column 14 is guided by the two poles 210 to the mating position with the base column 16. Then, by further lowering the lower column 14, the lower column 14 is mated with the base column 16. In this way, the mating jig 200 of the second embodiment also makes it easy to adjust the positions of the multiple columns that make up the split column 10 when assembling them, and can achieve the same effects as the mating jig 100 of the first embodiment.

[0035] (Third embodiment) Fig. 9 is a diagram illustrating a work site where a split column 10 is assembled using a fitting jig 300 according to the third embodiment. Fig. 10 is a diagram illustrating the fitting jig 300 according to the third embodiment. The fitting jig 300 according to the third embodiment is used to fit a split column 10 made up of multiple columns.

[0036] As shown in Figure 10, fitting jig 300 is configured to include a cylindrical portion 310 and a guide portion 320. Cylindrical portion 310 is a cylindrical metal portion that is fitted into the opening at the upper end of the lower pillar (lower pillar 14). Cylindrical portion 310 is not a perfect circle, but has a slit 312. This allows the lower end of cylindrical portion 310 to be narrowed, making it easier to fit into the opening in lower pillar 14.

[0037] Guide portion 320 is formed by welding metal wires and extends upward from cylindrical portion 310. Guide portion 320 has a conical shape (mountain shape) that tapers upward. In other words, the cross-sectional area of ​​guide portion 320 narrows as it extends upward.

[0038] 9 illustrates a configuration in which the lower pillar is the lower pillar 14 and the upper pillar is the upper pillar 12, and the upper pillar is fitted onto the lower pillar 14. First, the cylindrical portion 310 of the fitting jig 300 is fitted into the opening at the upper end of the lower pillar 14. This places the guide portion 320 of the fitting jig 300 at the upper end of the lower pillar 14.

[0039] Next, a sling belt 34 (or a sling wire) for connecting to the wire 32 is wound around the middle of the upper pole 12. The wire 32 is then wound up by a winch 36 of the aerial work platform, and the upper pole 12 is lifted up.

[0040] Once the upper column 12 has been lifted up until it is positioned above the lower column 14, the opening at the lower end of the upper column 12 is brought adjacent to the guide portion 320. Then, the tilted upper column 12 is brought into a vertical position and placed over the guide portion 320. This guides the upper column 12 to the mating position with the lower column 14. Thereafter, the upper column 12 is lowered downward, whereby the upper column 12 is mated with the lower column 14. In this way, the mating jig 300 of the third embodiment also makes it easy to adjust the positions of the multiple columns that make up the split column 10 when assembling them, and can achieve the same effects as the mating jig 100 of the first embodiment.

[0041] While the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such examples. It is clear that those skilled in the art can conceive of various modifications and alterations within the scope of the claims, and it is understood that such modifications and alterations also fall within the technical scope of the present invention. [Explanation of symbols]

[0042] 10...dividing column, 12...upper column, 14...lower column, 16...base column, 20...work site, 30...bucket, 32...wire, 34...sling belt, 36...winch, 40...sleeper, 100...fitting jig, 110...hopper, 110a...handle, 120...bracket, 122...ratchet buckle, 130...belt, 132...terminal fitting, 134...hook, 140...pole, 140a...handle, 142 ...Adjusting ball, 150...Bracket, 152...Ratchet buckle, 160...Belt, 162...End fitting, 164...Hook, 200...Fitting jig, 210...Pole, 212...Tip of pole, 220...Bracket, 222...Ratchet buckle, 230...Belt, 234...Hook, 300...Fitting jig, 310...Cylindrical portion, 312...Slit, 320...Guide portion, G...Ground, P...Worker

Claims

1. A fitting jig used to fit a split column consisting of multiple columns, A cylindrical hopper attached to the lower end of the upper column; a pole attached to the lower column near its upper end and extending upward; Equipped with The cross-sectional area of ​​the hopper narrows toward the upper pillar. A fitting jig characterized in that, by inserting the pole into the hopper, the upper pillar is guided to a fitting position with the lower pillar.

2. A fitting jig used to fit a split column consisting of multiple columns, two poles attached near the upper end of the lower column and extending upward; The two poles extend substantially parallel to each other, and the ends of the poles are bent in directions away from each other.

3. A fitting jig used to fit a split column consisting of multiple columns, a cylindrical portion that fits into the opening at the upper end of the lower column; a guide portion extending upward from the cylindrical portion; Equipped with The fitting jig is characterized in that the guide portion has a conical shape whose cross-sectional area narrows as it extends upward.

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