Partition column guiding tool and partition column guiding operation method

Abstract

To provide a split column guide and a split column guiding operation method that are excellent in operability and safety. 【Solution means】The split column guide 1 is provided at the upper end of the lower split column 91 erected on the ground, and is provided on the first flange portion 911 having a plurality of first screw insertion holes 911a formed along the circumferential direction, and is provided at the lower end of the upper split column 92 lifted above the lower split column 91. The split column guide 1 is for guiding the second flange portion 921 having a plurality of second screw insertion holes 921a formed along the circumferential direction, and includes a base portion 2, a guide pin 3 protruding from the base portion 2 and inserted into the second screw insertion hole 921a, and a grip portion 6 provided on the base portion 2. Then, with the guide pin 3 inserted into the second screw insertion hole 921a, the guide pin 3 is further inserted into the first screw insertion hole 911a to guide the second flange portion 921 to the first flange portion 911.

Description

Technical Field

[0001] The present invention relates to a split column guide and a split column guiding operation method.

Background Art

[0002] For example, Patent Document 1 describes a surface alignment jig for large flanges used for aligning two opposing flanges. The surface alignment jig for large flanges includes an L-shaped hanging lug having perpendicular long and short plates, a pin protruding downward from the short plate, and a push bolt that is screwed into the long plate and protrudes laterally.

[0003] When using this surface alignment jig for large flanges, first, the two flanges to be aligned are arranged vertically opposite each other. Next, the pin is inserted into the bolt hole formed in the upper flange to attach the surface alignment jig for large flanges. In this state, the push bolt faces the outer peripheral surface of the lower flange. Next, the push bolt is tightened, and the outer peripheral surface of the lower flange is pressed by the tip of the push bolt to change the relative positions of the two flanges and perform their alignment. After the alignment is completed, a bolt is inserted into another bolt hole to fix the two flanges, and then the surface alignment jig for large flanges is removed from the upper flange.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the surface alignment jig for large flanges of Patent Document 1, since the positioning of the two flanges is performed by tightening the push bolt, the workability is poor.

[0006] An object of the present invention is to provide a split column guide tool and a split column guiding method that are excellent in workability, in view of the above problems.

Means for Solving the Problems

[0007] Such an object is achieved by the following present invention.

[0008] (1) A split column guide tool for guiding a second flange portion provided at a lower end portion of an upper split column lifted above the lower split column to a first flange portion provided at an upper end portion of the lower split column standing on the ground and having a plurality of first screw insertion holes formed along the circumferential direction, the split column guide tool comprising: a base portion; a guide pin protruding from the base portion and inserted into the second screw insertion hole; and a gripping portion provided on the base portion, and further comprising: The split column guide tool is characterized in that, with the guide pin inserted into the second screw insertion hole, the guide pin is further inserted into the first screw insertion hole to guide the second flange portion to the first flange portion.

[0009] (2) A clamping portion that is movable with respect to the base portion and clamps the second flange portion between the clamping portion and the guide pin inserted into the second screw insertion hole by contacting the side surface of the second flange portion; The split column guide tool according to (1) above, further comprising a movable mechanism for moving the clamping portion closer to and away from the guide pin.

[0010] (3) The movable mechanism has a shaft having a screw portion screwed to the base portion at one end and connected to the clamping portion, and an operation portion for rotating the screw portion with respect to the base portion. The split column guide tool according to (2) above, wherein the clamping portion approaches and separates from the guide pin by operating the operation portion to rotate the shaft with respect to the base portion.

[0011] (4) The split column guide according to (3) above, wherein the gripping portion also serves as the operating portion.

[0012] (5) The gripping portion extends in a direction orthogonal to the extending direction of the guide pin, and is located outside the second flange portion in a state where the second flange portion is sandwiched, the split column guide according to (4) above.

[0013] (6) The split column guide according to (1) above, wherein unevenness is formed on the outer peripheral surface of a portion of the base end portion of the guide pin that is located within the second screw insertion hole when inserted into the second screw insertion hole.

[0014] (7) The split column guide according to (1) above, wherein the tip of the guide pin is tapered.

[0015] (8) The split column guide according to (1) above, wherein the guide pin is detachable from the base portion.

[0016] (9) A split column guiding operation method for guiding a second flange portion provided at the lower end of an upper split column lifted above a lower split column provided upright on the ground, the second flange portion having a plurality of second screw insertion holes formed along the circumferential direction, to a first flange portion provided at the upper end of the lower split column and having a plurality of first screw insertion holes formed along the circumferential direction, a base portion, a guide pin protruding from the base portion and inserted into the second screw insertion hole, and a gripping portion provided on the base portion, using a split column guide having the above components, inserting the guide pin into the second screw insertion hole, gripping the gripping portion to displace the second flange portion, and inserting the guide pin into the first screw insertion hole, the split column guiding operation method being characterized by the above steps.

[0017] (10) Using a pair of first split column guides and second split column guides that are the split column guides, Insert the guide pin of the first split column guide tool into one of the two second screw insertion holes arranged on opposite sides of each other, and insert the guide pin of the second split column guide tool into the other, With the second screw insertion hole into which the guide pin of the first split column guide tool is inserted positioned below the second screw insertion hole into which the guide pin of the second split column guide tool is inserted, while tilting the upper split column with respect to the vertical direction, grip each of the gripping portions of the first split column guide tool and the second split column guide tool to displace the second flange portion, The split column guiding operation method according to (9) above, wherein after inserting the guide pin of the first split column guide tool into a predetermined first screw insertion hole, the inclination of the upper split column is reduced, and the guide pin of the second split column guide tool is inserted into another first screw insertion hole.

[0018] (11) The split column guiding operation method according to (10) above, wherein the guide pin of the first split column guide tool is longer than the guide pin of the second split column guide tool.

Advantages of the Invention

[0019] The split column guide tool of the present invention has a base portion, a guide pin protruding from the base portion and inserted into a second screw insertion hole, and a gripping portion provided on the base portion. With the guide pin inserted into the second screw insertion hole, further, by inserting the guide pin into the first screw insertion hole, it is configured to guide the second flange portion to the first flange portion. According to such a configuration, the positioning of the second flange with respect to the first flange can be easily performed, and it becomes a split column guide tool with excellent workability.

[0020] The method for guiding a split column of the present invention uses a split column guide having a base portion, a guide pin protruding from the base portion and inserted into a second screw insertion hole, and a gripping portion provided on the base portion. The guide pin is inserted into the second screw insertion hole, the gripping portion is gripped to displace the second flange portion, and the guide pin is configured to be inserted into the first screw insertion hole. According to such a configuration, the positioning of the second flange with respect to the first flange can be easily performed, and the split column guiding operation method is excellent in workability.

Brief Description of the Drawings

[0021]

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Embodiments for Carrying Out the Invention

[0022] Hereinafter, a detailed description will be given based on embodiments shown in the split column guide tool and the split column guiding operation method of the present invention.

[0023] The split column guide tool 1 shown in FIGS. 1 and 2 is, for example, a tool used when assembling the split column 9. By using the split column guide tool 1, the assembly of the split column 9 (hereinafter, also referred to as "column building work") can be carried out safely and smoothly.

[0024] Before explaining the split column guide tool 1, the split column 9 will be briefly explained. As shown in FIG. 3, the split column 9 is manufactured by dividing a concrete pole 90 (a pole made of concrete) into two, a lower split column 91 and an upper split column 92, and connecting these lower split column 91 and upper split column 92 at the column building location to form one concrete pole 90. According to the split column 9 having such a configuration, column building is possible even in a place where it is difficult to build a column with one non-divided concrete pole 90 due to restrictions on the transportation route and the column building location. Therefore, the split column 9 can exhibit high convenience.

[0025] Further, as shown in FIG. 3, an annular first flange portion 911 protruding in the radial direction is formed at the upper end portion of the lower split column 91, and a plurality of first screw insertion holes 911a (bolt holes) arranged at equal intervals along the circumferential direction are formed in the first flange portion 911. On the other hand, an annular second flange portion 921 protruding in the radial direction is formed at the lower end portion of the upper split column 92, and a plurality (the same number as the first screw insertion holes 911a) of second screw insertion holes 921a (bolt holes) arranged at equal intervals along the circumferential direction are formed in the second flange portion 921. These first and second flange portions 911 and 921 are each made of, for example, a metal material.

[0026] Also, as shown in FIG. 3, in a state where the second flange portion 921 is positioned with respect to the first flange portion 911, the first and second screw insertion holes 911a and 921a overlap and communicate with each other vertically. Then, a screw B (bolt) is inserted into the first and second screw insertion holes 911a and 921a, and a nut N is fastened to the screw B, whereby the first flange portion 911 and the second flange portion 921 are connected and fixed. Thereby, the split column 9 is assembled.

[0027] The split column 9 has been described above. However, the configuration of the split column 9 is not particularly limited. For example, the material of the split column 9 may not be concrete and may be a metal material. Further, the split column 9 may be divided into three or more concrete poles 90. Also, the use of the split column 9 is not particularly limited, and for example, it may be used as a utility pole for supporting electric wires or as a pole for hanging a net or the like.

[0028] Next, the split column guide 1 will be described. The split column guide 1 is a tool used by being attached to the second flange portion 921 of the upper split column 92. As shown in FIGS. 1, 2, and 4, it has a base portion 2, a guide pin 3 provided on the base portion 2, a clamping portion 4 that moves in the X-axis direction with respect to the base portion 2, a movable mechanism 5 that moves the clamping portion 4 in the X-axis direction with respect to the base portion 2, and a gripping portion 6 provided on the base portion 2 and also serving as an operation portion 513 included in the movable mechanism 5. Hereinafter, each of these portions will be described in order.

[0029] <Base 2> As shown in FIG. 1, the base 2 has a plate-shaped plate portion 21 and a thick wall portion 22 protruding downward from the plate portion 21. The plate portion 21 is a substantially hexagonal plate having the Z-axis direction as its thickness, and has a substantially trapezoidal tip portion 211 and a substantially rectangular base end portion 212 located on the base end side (minus X-axis direction) of the tip portion 211. That is, the tip of the plate portion 21 tapers. According to such a shape, the tip weight of the base 2 can be reduced, so that the operability of the split column guide 1 is improved.

[0030] Further, as shown in FIG. 4, a screw hole 213 for a guide pin to which the guide pin 3 is fastened is formed in the tip portion 211 of the plate portion 21. The screw hole 213 for the guide pin is a through hole penetrating the plate portion 21 in the Z-axis direction. In addition, the region where the screw hole 213 for the guide pin is formed in the plate portion 21 is thicker than the surrounding region, and the upper surface bulges upward with respect to the surroundings. According to such a configuration, the mechanical strength of this portion is increased, and the posture of the guide pin 3 with respect to the base 2 is stabilized. Therefore, the safety and operability of the split column guide 1 are improved. On the other hand, the lower surface of the region where the screw hole 213 for the guide pin is formed in the plate portion 21 is a surface continuous with the surroundings. That is, it is flush. According to such a configuration, as will be described later, in a state where the split column guide 1 is attached to the second flange portion 921 (hereinafter, also simply referred to as the "attached state"), the lower surface of the plate portion 21 can be brought into contact with the upper surface of the second flange portion 921 over a wide range. Therefore, the mounting stability of the split column guide 1 is improved, and the column construction work can be performed safely and smoothly.

[0031] Also, as shown in FIG. 4, in the central portion of the plate portion 21 (the proximal end side of the screw hole 213 for the guide pin), a long hole 214 for guiding the clamping portion is formed that penetrates the plate portion 21 in the Z-axis direction and extends in the X-axis direction. The long hole 214 for guiding the clamping portion has a function of guiding the clamping portion 4 in the X-axis direction while keeping it along the lower surface of the plate portion 21. Also, a cylindrical spacer S is inserted into the long hole 214 for guiding the clamping portion. The outer diameter of the spacer S is slightly smaller than the width of the long hole 214 for guiding the clamping portion, and it can move in the X-axis direction within the long hole 214 for guiding the clamping portion. Further, a screw N1 (bolt) is inserted into the spacer S from above through a washer W. Then, by fastening (threading) the screw N1 to the clamping portion 4, the clamping portion 4 is held in a state where it can move in the X-axis direction with respect to the plate portion 21. Although not shown, a lock washer may be interposed between the screw N1 and the washer W.

[0032] Here, as shown in FIG. 5, the thickness D1 of the spacer S is slightly thicker than the thickness D2 of the plate portion 21. Therefore, even if the screw N1 is strongly fastened to the clamping portion 4, the movement of the clamping portion 4 in the X-axis direction with respect to the base portion 2 is not hindered. Thus, the clamping portion 4 is firmly held by the base portion 2, and the safety and operability of the split column guide 1 are enhanced. For example, in order to improve the slidability of the spacer S with respect to the long hole 214 for guiding the clamping portion, a lubricant such as grease may be applied to the outer peripheral surface of the spacer S or the inner peripheral surface of the long hole 214 for guiding the clamping portion, or a process for improving the sliding property such as fluororesin processing may be performed.

[0033] As shown in FIGS. 1, 2, and 4, the wall portion 22 protrudes downward (minus side in the Z-axis direction) from the base end portion 212 of the plate portion 21 and has a U-shaped curved shape along the outer edge portion of the plate portion 21. Specifically, as shown in FIG. 6, the wall portion 22 has a central portion 221 located at the center thereof and extending in the Y-axis direction, a first end portion 222 extending from one end side of the central portion 221 and extending in the X-axis direction, and a second end portion 223 extending from the other end side of the central portion 221 and extending in the X-axis direction. Among these, the central portion 221 is formed thicker than the first and second end portions 222 and 223, and its rigidity is enhanced. Further, as shown in FIGS. 4 and 5, a screw hole 224 for a shaft penetrating the central portion 221 in the X-axis direction is formed in the central portion 221, and the shaft 51 is inserted into and screwed into the screw hole 224 for a shaft.

[0034] The base portion 2 as described above is made of, for example, a metal material such as aluminum (Al) or steel. Thereby, the base portion 2 having high mechanical strength is obtained. Further, the spacer S is also made of, for example, a metal material such as aluminum (Al) or steel. Thereby, the spacer S having high mechanical strength is obtained.

[0035] Although the base portion 2 has been described above, the configuration of the base portion 2 is not particularly limited. For example, the planar shape of the plate portion 21 is not limited to a substantially hexagonal shape with a tapered tip. Further, the region where the screw hole 213 for the guide pin is formed in the plate portion 21 may not be thickened and may have the same thickness as the surrounding region. Further, the wall portion 22 may not be U-shaped.

[0036] <Guide pin 3> The guide pin 3 is inserted into the second screw insertion hole 921a of the second flange portion 921 during the building column operation. As shown in FIG. 4, the guide pin 3 has a long guide pin body 31 that extends straight, and a screw portion 32 that protrudes from the base end portion (upper end portion) of the guide pin body 31. Then, by fastening (threading) the screw portion 32 into the guide pin screw hole 213 of the base portion 2, the guide pin 3 is fixed to the base portion 2. That is, in the split column guide tool 1 of the present embodiment, the guide pin 3 is detachable from the base portion 2. By making the guide pin 3 detachable from the base portion 2, for example, a plurality of guide pins 3 having different shapes are prepared in advance, and the guide pin 3 is selected and used according to the type of the split column 9 to be used (the thicknesses of the first and second flange portions 911 and 921, the diameters of the first and second screw insertion holes 911a and 921a, etc.). Therefore, the convenience of the split column guide tool 1 is enhanced.

[0037] Further, when the guide pin 3 is fixed to the base portion 2, it protrudes downward from the plate portion 21 and is orthogonal to the lower surface of the plate portion 21. In this way, by making the guide pin 3 orthogonal to the lower surface of the plate portion 21, in the mounted state, the lower surface of the plate portion 21 can be brought into contact with the upper surface of the second flange portion 921 over a wide range. Therefore, the stability of the split column guide tool 1 in the mounted state is increased, and the building column operation can be performed safely and smoothly. Note that the term "orthogonal" includes not only a complete orthogonal state but also a state where it is inclined to such an extent that it can be regarded as orthogonal in the technical common sense in the relevant technical field (for example, within about 5°).

[0038] Further, as shown in FIG. 5, the screw portion 32 is longer than the guide pin screw hole 213, and in the state where the guide pin 3 is fixed to the base portion 2, the upper end portion (tip portion) of the screw portion 32 protrudes from the upper surface of the plate portion 21. Further, a recess 321 (tool hole) for engaging a tool such as a driver is formed in the upper end surface (tip surface) of the screw portion 32. Note that, as shown in FIG. 1, in the split column guide tool 1 of the present embodiment, the recess 321 is a slotted groove (single-character groove) that crosses the upper end surface of the screw portion 32, but it is not limited thereto, and for example, a cross-shaped groove, a hexagonal hole, etc. may also be used.

[0039] Generally, when removing the guide pin 3 from the base 2, the operator rotates the guide pin 3 manually. However, it is conceivable that the guide pin 3 may be fixed to the base 2 due to the load applied during the previous use and cannot be removed manually. In such a case, a tool such as a driver is connected to the recess 321, and the guide pin 3 can be easily removed from the base 2 by rotating the guide pin 3 using the tool. Also, when it is desired to fix the guide pin 3 more firmly to the base 2 during installation, after manually attaching the guide pin 3 to the base 2, it is also possible to tighten it further using a tool such as a driver.

[0040] Also, as shown in FIG. 7, the total length L1 of the guide pin body 31 is longer than the total length L2 of the first screw insertion hole 911a and the second screw insertion hole 921a (the length of the first screw insertion hole 911a + the length of the second screw insertion hole 921a). Thereby, during the building column work, the guide pin 3 penetrates the first and second screw insertion holes 911a, 921a, and its tip protrudes from the lower surface of the first flange portion 911. Therefore, it is possible to sufficiently secure the insertion depth of the guide pin 3 into the first and second screw insertion holes 911a, 921a, it becomes easier to confirm the insertion state of the guide pin 3, and the safety of the building column work is enhanced.

[0041] Also, as shown in FIGS. 4 and 7, the guide pin body 31 has a columnar base end portion 311 with a constant outer diameter along the axial direction (Z-axis direction), and a conical tip portion 312 with a gradually decreasing outer diameter toward the tip side. Also, the outer diameter of the guide pin body 31 (the outer diameter of the base end portion 311) is slightly smaller than the inner diameters of the first and second screw insertion holes 911a, 921a. By making the tip portion 312 tapered in this way, the guide pin body 31 can be smoothly inserted into the first and second screw insertion holes 911a, 921a.

[0042] Furthermore, the length L3 of the base end portion 311 is longer than the length L4 of the second screw insertion hole 921a (the thickness of the second flange portion 921). According to such a configuration, in the mounted state, the base portion 311 protrudes from the lower surface of the second flange portion 921, and the protruding portion is inserted into the first screw insertion hole 911a of the first flange portion 911. Therefore, it becomes easier to align the centers of the first and second screw insertion holes 911a and 921a, and the positioning of the second flange portion 921 with respect to the first flange portion 911 can be performed with higher accuracy. However, it is not limited to this, and the length L3 of the base end portion 311 may be equal to the length L4 of the second screw insertion hole 921a or shorter than the length of the second screw insertion hole 921a.

[0043] Also, as shown in FIGS. 4 and 7, regular and minute unevenness 313 is formed on the outer peripheral surface of the base end portion 311. The unevenness 313 increases the frictional resistance with the inner peripheral surface of the base end portion 311 and functions as an anti-slip for the second flange portion 921. Therefore, the mounting stability of the split column guide tool 1 is enhanced. Also, by gripping the portion of the unevenness 313 and rotating the guide pin 3, the attachment and detachment of the guide pin 3 with respect to the base portion 2 becomes easy. In this embodiment, the unevenness 313 is formed by knurling (diamond knurling). Thereby, the function as an anti-slip can be surely exhibited, and the aesthetic property of the guide pin 3 is enhanced.

[0044] The guide pin 3 as described above is made of a metal material such as aluminum (Al) or steel, for example. Thereby, the guide pin 3 having high mechanical strength is obtained.

[0045] As described above, the guide pin 3 has been described, but the configuration of the guide pin 3 is not particularly limited. For example, the unevenness 313 may be omitted from the base end portion 311. Also, the guide pin body 31 may not have a base end portion 311 with a constant outer diameter, and the whole thereof may be a tapered shape that tapers toward the tip. Also, the method of fixing the guide pin 3 to the base portion 2 is not limited to screwing. Also, the guide pin 3 may be fixedly attached to the base portion 2 in a non-detachable manner. In this case, the guide pin 3 may be integral with the base portion 2.

[0046] <Clamping portion 4> As shown in FIG. 6, the clamping portion 4 is a block body, which is arranged along the lower surface of the plate portion 21 and is located inside the U-shaped wall portion 22. The clamping portion 4 moves in the X-axis direction with respect to the base portion 2 so as to be guided by the first and second end portions 222 and 223 located on both sides in the Y-axis direction thereof. Further, the clamping portion 4 has a pair of abutting protrusions 41 and 42 protruding from both ends in the Y-axis direction of the tip end portion. As shown in FIG. 8, in the mounted state, these abutting protrusions 41 and 42 abut against the side surfaces of the second flange portion 921, respectively. According to such a configuration, the split column guide 1 can correspond to various second flange portions 921 having different diameters, and the convenience of the split column guide 1 is enhanced. Note that a rubber anti-slip member may be provided at the abutting protrusions 41 and 42 (the portions in contact with the second flange portion 921). Further, unevenness that functions as an anti-slip may be formed on the surfaces of the abutting protrusions 41 and 42 (the portions in contact with the second flange portion 921) by, for example, knurling.

[0047] Further, as shown in FIGS. 4 and 5, the clamping portion 4 has a shaft insertion hole 43 that opens at its base end portion and extends in the X-axis direction, and a screw hole 44 that penetrates the upper surface and the shaft insertion hole 43. The tip end portion of the shaft 51 is inserted into the shaft insertion hole 43, and the screw N1 described above is fastened (threaded) into the screw hole 44. Further, the screw N1 protrudes into the shaft insertion hole 43 and engages with the shaft 51, thereby restricting the shaft 51 from coming out of the shaft insertion hole 43.

[0048] Also, as shown in FIG. 6, on both sides in the Y-axis direction of the shaft insertion hole 43 of the clamping portion 4, thinning portions 45 and 46 that are thinner than the surrounding regions are formed. Thereby, the weight of the clamping portion 4 can be reduced.

[0049] The clamping portion 4 as described above is made of a metal material such as aluminum (Al) or steel, for example. Thereby, the clamping portion 4 having high mechanical strength is obtained.

[0050] Although the clamping part 4 has been described above, the configuration of the clamping part 4 is not particularly limited. For example, the cut-out parts 45 and 46 may be omitted from the clamping part 4.

[0051] <Movable mechanism 5> The movable mechanism 5 moves the clamping part 4 in the X-axis direction with respect to the base part 2, and moves the clamping part 4 closer to or away from the guide pin 3. As shown in FIGS. 4 and 5, such a movable mechanism 5 extends in the X-axis direction and has a rod-shaped shaft 51 inserted through the screw hole 224 for shaft and the shaft insertion hole 43. Further, the shaft 51 has a screw part 511 formed at the central part thereof and screwed with the screw hole 224 for shaft. The tip of the shaft 51 is inserted into the shaft insertion hole 43 formed in the clamping part 4. An annular recess 512 is formed in a portion of the shaft 51 that overlaps with the screw hole 44, and the screw N1 protruding from the screw hole 44 enters the recess 512, thereby engaging with the shaft 51. This prevents the shaft 51 from coming out of the clamping part 4, and the shaft 51 is rotatably connected to the clamping part 4.

[0052] The base end part of the shaft 51, that is, the part protruding from the base part 2 toward the base end side (minus side in the X-axis direction) is an operation part 513 for rotating the shaft 51. When the operation part 513 is rotated forward, the shaft 51 moves to the tip side (guide pin 3 side), and the clamping part 4 moves to the tip side as if it is pushed by the shaft 51. On the contrary, when the operation part 513 is rotated reversely, the shaft 51 moves to the base end side (opposite side to the guide pin 3), and the clamping part 4 moves to the base end side as if it is pulled by the shaft 51. According to such a configuration, the clamping part 4 can be easily moved. Therefore, the operability of the split column guide 1 is improved.

[0053] The shaft 51 as described above is made of a metal material such as aluminum (Al) or steel, for example. Thereby, the shaft 51 having high mechanical strength is obtained.

[0054] <Gripping part 6> The gripping part 6 is the part that an operator grips when using the split column guide tool 1. As shown in FIGS. 4 and 5, the gripping part 6 has a grip 61 provided on the operation part 513. That is, in the present embodiment, the gripping part 6 also serves as the operation part 513, and by rotating the grip 61, the clamping part 4 can be moved to the tip side or the base end side. According to such a configuration, for example, compared with a configuration in which the gripping part 6 is not provided on the shaft 51 and the gripping part 6 and the operation part 513 are provided separately, the operability of the split column guide tool 1 is improved, and further, miniaturization and weight reduction can also be achieved.

[0055] Further, the gripping part 6 extends in a direction (X-axis direction) orthogonal to the extending direction (Z-axis direction) of the guide pin 3, and as shown in FIG. 8, in the mounted state, it is located outside the second flange part 921. According to such a configuration, during the building column operation, an accident in which the hand of the operator gripping the gripping part 6 is pinched between the first and second flange parts 911 and 921 is prevented, and the building column operation can be performed safely.

[0056] As described above, the gripping part 6 has been described, but the configuration of the gripping part 6 is not particularly limited. For example, the gripping part 6 may not also serve as the operation part 513. That is, the gripping part 6 and the operation part 513 may be provided separately.

[0057] As described above, the configuration of the split column guide tool 1 has been described. Next, the usage method of the split column guide tool 1, that is, the building column operation method using the split column guide tool 1 will be described.

[0058] First, as shown in FIG. 9, the lower split column 91 is installed on the ground, and the upper split column 92 is lifted by a crane so that the second flange part 921 is positioned above the first flange part 911. At this time, it is preferable to incline the upper split column 92 with respect to the lower split column 91 (in the vertical direction).

[0059] Next, as shown in FIG. 10, prepare a pair of split column guides 1. In the following, for convenience of explanation, one of the split column guides 1 is referred to as the first split column guide 1A, and the other split column guide 1 is referred to as the second split column guide 1B. Also, the length L1 of the guide pin 3 of the first split column guide 1A is longer than the length L1 of the guide pin 3 of the second split column guide 1B. Next, as preparation before mounting, if necessary, reverse-rotate the grips 61 of the first and second split column guides 1A and 1B respectively to move the clamping portion 4 sufficiently toward the base end side. That is, the clamping portion 4 and the guide pin 3 are sufficiently separated from each other.

[0060] Next, mount the first split column guide 1A on the second flange portion 921. Specifically, as shown in FIG. 11, first, insert the guide pin 3 of the first split column guide 1A into a predetermined second screw insertion hole 921a. In particular, in the present embodiment, the guide pin 3 is inserted into the second screw insertion hole 921a located at the lowermost side of the inclined second flange portion 921. In this state, the base end portion 311 of the guide pin 3 is located within the second screw insertion hole 921a, and the lower surface of the plate portion 21 is in contact with the upper surface of the second flange portion 921 over a wide range.

[0061] Next, as shown in FIG. 12, rotate the grip 61 (operation portion 513) of the first split column guide 1A clockwise to move the clamping portion 4 toward the tip end side (guide pin 3 side), and strongly bring each contact projection portion 41, 42 into contact with the side surface of the second flange portion 921. As a result, the second flange portion 921 is clamped between the guide pin 3 and the clamping portion 4, and the first split column guide 1A is fixed to the second flange portion 921 in a mounted state. According to such a configuration, unintentional detachment of the first split column guide 1A from the second flange portion 921 during the building column work is suppressed, and the building column work can be performed safely and smoothly.

[0062] In particular, in this embodiment, not only is the second flange portion 921 clamped between the guide pin 3 and the clamping portion 4, but also the lower surface of the plate portion 21 is in contact with the upper surface of the second flange portion 921, so that the mounting state of the first split column guide 1A becomes more stable. Further, since the unevenness 313 is formed on the side surface of the base end portion 311, the friction coefficient between the base end portion 311 and the inner peripheral surface of the second screw insertion hole 921a is increased, and this also makes the mounting state of the first split column guide 1A more stable.

[0063] Next, as shown in FIG. 13, in the same manner as the first split column guide 1A, the second split column guide 1B is mounted on the second flange portion 921. At this time, the guide pin 3 of the second split column guide 1B is inserted into the second screw insertion hole 921a located on the opposite side to the second screw insertion hole 921a into which the guide pin 3 of the first split column guide 1A is inserted. That is, in this embodiment, the guide pin 3 of the second split column guide 1B is inserted into the second screw insertion hole 921a located at the uppermost side of the inclined second flange portion 921.

[0064] As a result, as shown in FIG. 14, the first and second split column guides 1A and 1B are mounted on the second flange portion 921. In such a mounted state, the gripping portions 6 of the first split column guide 1A and the gripping portions 6 of the second split column guide 1B project radially from the second flange portion 921. Therefore, the hands of the operator holding the gripping portion 6 are positioned on the side of the second flange portion 921, and there is no risk of being pinched between the first flange portion 911 and the second flange portion 921 during the building column operation. Therefore, the building column operation can be performed safely.

[0065] Next, while keeping the upper split column 92 in an inclined posture, that is, in a state where the second screw insertion hole 921a through which the guide pin 3 of the first split column guide 1A is inserted is located below the second screw insertion hole 921a through which the guide pin 3 of the second split column guide 1B is inserted, the upper split column 92 is inclined with respect to the vertical direction, and the grips 61 of the first and second split column guides 1A and 1B are held with both hands to displace the second flange portion 921.

[0066] Then, as shown in FIG. 15, first, the guide pin 3 of the first split column guide 1A is inserted into a predetermined first screw insertion hole 911a. Next, as shown in FIGS. 16 and 17, the inclination of the upper split column 92 is gradually reduced, and the guide pin 3 of the second split column guide 1B is inserted into another first screw insertion hole 911a (the first screw insertion hole 911a located on the opposite side of the first screw insertion hole 911a through which the guide pin 3 of the first split column guide 1A is inserted).

[0067] As described above, the upper split column 92 is placed in a state where it is positioned with respect to the lower split column 91. In this way, according to the method of inclining the upper split column 92 and inserting the guide pin 3 into the first screw insertion hole 911a in the order of the first split column guide 1A and the second split column guide 1B, the positioning of the upper split column 92 with respect to the lower split column 91 can be easily performed. In particular, in this embodiment, since the guide pin 3 of the second split column guide 1B is shorter than the guide pin 3 of the first split column guide 1A, as shown in FIGS. 16 and 17, in the process of gradually reducing the inclination of the upper split column 92, the guide pin 3 of the second split column guide 1B is smoothly inserted into the first screw insertion hole 911a without contacting the upper surface of the first flange portion 911. Therefore, the column building work can be carried out safely and smoothly.

[0068] Next, as shown in FIG. 18, screws B are inserted into the first and second screw insertion holes 911a and 921a into which the guide pins 3 of the first and second split column guides 1A and 1B are not inserted, and nuts N are fastened to the screws B to fix the upper split column 92 to the lower split column 91. Next, the first and second split column guides 1A and 1B are removed from the second flange portion 921 respectively. Then, as shown in FIG. 19, for the first and second screw insertion holes 911a and 921a from which the first and second split column guides 1A and 1B are removed, screws B are also inserted, and nuts N are fastened to the screws B. As described above, the upper split column 92 is fixed to the lower split column 91, and the split column 9 is built.

[0069] According to the method as described above, the positioning of the second flange portion 921 with respect to the first flange portion 911 can be easily performed. Therefore, the column erection work can be carried out safely and smoothly.

[0070] As described above in detail, the split column guide tool and the split column guiding operation method have been described. Such a split column guide tool 1 is provided at the upper end portion of the lower split column 91 erected on the ground, as described above, and has a plurality of first screw insertion holes 911a formed along the circumferential direction. The first flange portion 911 is a split column guide tool 1 for guiding a second flange portion 921 provided at the lower end portion of the upper split column 92 lifted above the lower split column 91 and having a plurality of second screw insertion holes 921a formed along the circumferential direction. It has a base portion 2, a guide pin 3 protruding from the base portion 2 and inserted into the second screw insertion hole 921a, and a gripping portion 6 provided on the base portion 2. Then, with the guide pin 3 inserted into the second screw insertion hole 921a, further inserting the guide pin 3 into the first screw insertion hole 911a guides the second flange portion 921 to the first flange portion 911. According to such a configuration, the positioning of the second flange portion 921 with respect to the first flange portion 911 can be easily performed. Therefore, the column erection work can be carried out safely and smoothly.

[0071] Also, as described above, the split column guide tool 1 is movable with respect to the base portion 2, and has a clamping portion 4 that clamps the second flange portion 921 between the guide pin 3 inserted into the second screw insertion hole 921a by contacting the side surface of the second flange portion 921, and a movable mechanism 5 that moves the clamping portion 4 closer to and away from the guide pin 3. According to such a configuration, the split column guide tool 1 can be fixed to the second flange portion 921. Therefore, the unintentional detachment of the split column guide tool 1 during the work is suppressed, and the column erection work can be carried out safely and smoothly.

[0072] Also, as described above, the movable mechanism 5 has a shaft 51 having a screw portion 511 whose one end portion (tip portion) is connected to the clamping portion 4 and is screwed to the base portion 2, and an operation portion 513 for rotating the screw portion 511 with respect to the base portion 2. By operating the operation portion 513 to rotate the shaft 51 with respect to the base portion 2, the clamping portion 4 approaches and separates from the guide pin 3. According to such a configuration, the clamping portion 4 can be easily moved. Therefore, the operability of the split column guide 1 is improved.

[0073] Also, as described above, the gripping portion 6 also serves as the operation portion 513. According to such a configuration, for example, compared with a configuration in which the gripping portion 6 and the operation portion 513 are provided separately, the operability of the split column guide 1 is enhanced, and further, miniaturization and weight reduction can be achieved.

[0074] Also, as described above, the gripping portion 6 extends in a direction orthogonal to the extending direction of the guide pin 3 and is located outside the second flange portion 921 in a state of clamping the second flange portion 921. According to such a configuration, during the column building work, an accident such as a hand for gripping the gripping portion 6 being pinched between the first and second flange portions 911 and 921 is prevented, and the column building work can be performed safely.

[0075] Also, as described above, on the outer peripheral surface of the base end portion 311 of the guide pin 3, which is located inside the second screw insertion hole 921a when inserted into the second screw insertion hole 921a, irregularities 313 are formed. According to such a configuration, the friction coefficient between the guide pin 3 and the inner peripheral surface of the second screw insertion hole 921a is increased, and the mounting state of the split column guide 1 becomes more stable.

[0076] Also, as described above, the tip portion 312 of the guide pin 3 is tapered. According to such a configuration, it becomes easier to insert the guide pin 3 into the first and second screw insertion holes 911a and 921a. Therefore, the operability of the split column guide 1 is improved.

[0077] Also, as described above, the guide pin 3 is detachable from the base portion 2. According to such a configuration, for example, a plurality of guide pins 3 having different shapes are prepared in advance, and the guide pin 3 can be selected and used according to the type of the split column 9 to be used (the thicknesses of the first and second flange portions 911 and 921, the diameters of the first and second screw insertion holes 911a and 921a, etc.). Therefore, the convenience of the split column guide tool 1 is enhanced.

[0078] Also, as described above, the split column guiding operation method is provided at the upper end portion of the lower split column 91 erected on the ground, and includes a plurality of first screw insertion holes 911a formed along the circumferential direction. A split column guiding operation method for guiding a second flange portion 921 provided at the lower end portion of the upper split column 92 lifted above the lower split column 91 and having a plurality of second screw insertion holes 921a formed along the circumferential direction, the method using a split column guiding tool 1 having a base portion 2, a guide pin 3 protruding from the base portion 2 and inserted into the second screw insertion hole 921a, and a gripping portion 6 provided on the base portion 2. The guide pin 3 is inserted into the second screw insertion hole 921a, the gripping portion 6 is gripped to displace the second flange portion 921, and the guide pin 3 is inserted into the first screw insertion hole 911a. According to such a method, the positioning of the second flange portion 921 with respect to the first flange portion 911 can be easily performed. Therefore, the building column work can be carried out safely and smoothly.

[0079] Also, as described above, in the split column guiding operation method, a pair of first split column guiding tools 1A and 1B, which are the split column guiding tools 1, are used. The guide pin 3 of the first split column guiding tool 1A is inserted into one of the two second screw insertion holes 921a arranged on opposite sides of each other, and the guide pin 3 of the second split column guiding tool 1B is inserted into the other. While the second screw insertion hole 921a into which the guide pin 3 of the first split column guiding tool 1A is inserted is positioned below the second screw insertion hole 921a into which the guide pin 3 of the second split column guiding tool 1B is inserted, the upper split column 92 is inclined with respect to the vertical direction. Then, the gripping portions 6 of the first split column guiding tool 1A and the second split column guiding tool 1B are gripped to displace the second flange portion 921. After the guide pin 3 of the first split column guiding tool 1A is inserted into a predetermined first screw insertion hole 911a, the inclination of the upper split column 92 is reduced, and the guide pin 3 of the second split column guiding tool 1B is inserted into another first screw insertion hole 911a. According to such a method, the positioning of the second flange portion 921 with respect to the first flange portion 911 can be performed more easily.

[0080] Also, as described above, the guide pin 3 of the first split column guiding tool 1A is longer than the guide pin 3 of the second split column guiding tool 1B. According to such a configuration, it becomes easier to insert the guide pin 3 of the first split column guiding tool 1A into the first screw insertion hole 911a. Also, after the guide pin 3 of the first split column guiding tool 1A is inserted into the first screw insertion hole 911a, when reducing the inclination of the upper split column 92 and inserting the guide pin 3 of the second split column guiding tool 1B into another first screw insertion hole 911a, the guide pin 3 of the second split column guiding tool 1B is smoothly inserted into the first screw insertion hole 911a without contacting the upper surface of the first flange portion 911. Therefore, the column construction work can be performed safely and smoothly.

[0081] As described above, the split column guiding tool and the split column guiding operation method of the present invention have been described based on the illustrated embodiments. However, the present invention is not limited thereto, and the configuration of each part can be replaced with any configuration or process having the same function. Also, any other arbitrary configuration or process may be added to the present invention.

Explanation of Reference Numerals

[0082] 1… Split column guide, 1A… First split column guide, 1B… Second split column guide, 2… Base, 21… Plate part, 211… Tip part, 212… Base end part, 213… Screw hole for guide pin, 214… Long hole for clamping part guide, 22… Wall part, 221… Central part, 222… First end part, 223… Second end part, 224… Screw hole for shaft, 3… Guide pin, 31… Guide pin body, 311… Base end part, 312… Tip part, 313… Concavity and convexity, 32… Screw part, 321… Recess, 4… Clamping part, 41… Contact projection part, 42… Contact projection part, 43… Shaft insertion hole, 44… Screw hole, 45… Cutout part, 46… Cutout part, 5… Movable mechanism, 51… Shaft, 511… Screw part, 512… Concave part, 513… Operation part, 6… Gripping part, 61… Grip, 9… Split column, 90… Concrete pole, 91… Lower split column, 911… First flange part, 911a… First screw insertion hole, 92… Upper split column, 921… Second flange part, 921a… Second screw insertion hole, B… Screw, D1… Thickness, D2… Thickness, L1… Overall length, L2… Total length, L3… Length, L4… Length, N… Nut, N1… Screw S… Spacer

Claims

1. A split pole guide for guiding a second flange portion, which is provided at the lower end of an upper split pole suspended above the lower split pole and has a plurality of second screw insertion holes formed along a circumferential direction, to a first flange portion, which is provided at the upper end of a lower split pole erected on the ground and has a plurality of first screw insertion holes formed along a circumferential direction, A base and A guide pin protruding from the base portion and inserted into the second screw insertion hole; a clamping portion that is movable with respect to the base portion and that clamps the second flange portion between the clamping portion and the guide pin that is inserted into the second screw insertion hole by contacting a side surface of the second flange portion; a movable mechanism for moving the clamping portion toward and away from the guide pin; A grip portion provided on the base portion, A split column guide device characterized in that, while the second flange portion is clamped between the guide pin inserted into the second screw insertion hole and the clamping portion, the guide pin is further inserted into the first screw insertion hole to guide the second flange portion to the first flange portion.

2. the movable mechanism has a shaft having one end connected to the clamping portion and including a screw portion screwed into the base portion and an operation portion for rotating the screw portion relative to the base portion; The split column guide according to claim 1 , wherein the clamping portion moves closer to or away from the guide pin by operating the operating portion to rotate the shaft relative to the base portion.

3. The split pole guide according to claim 2 , wherein the gripping portion also serves as the operating portion.

4. The gripping portion extends in a direction perpendicular to an extension direction of the guide pin, A split pole guide as described in claim 3, which is located outside the second flange portion when the second flange portion is clamped.

5. A split column guide device as described in claim 1, wherein the outer surface of the base end of the guide pin, which is located within the second screw insertion hole when inserted into the second screw insertion hole, is formed with irregularities.

6. The split pole guide according to claim 1 , wherein the guide pin has a tapered tip.

7. The split pole guide according to claim 1 , wherein the guide pin is detachable from the base.

8. A split column guiding operation method for guiding a second flange portion, which is provided at the lower end of an upper split column suspended above a lower split column and has a plurality of second screw insertion holes formed along a circumferential direction, to a first flange portion, which is provided at the upper end of a lower split column erected on the ground and has a plurality of first screw insertion holes formed along a circumferential direction, A base and A guide pin protruding from the base portion and inserted into the second screw insertion hole; a clamping portion that is movable with respect to the base portion and that clamps the second flange portion between the clamping portion and the guide pin that is inserted into the second screw insertion hole by contacting a side surface of the second flange portion; a movable mechanism for moving the clamping portion toward and away from the guide pin; A split pole guide having a gripping portion provided at the base, The guide pin is inserted into the second screw insertion hole; The second flange portion is clamped between the guide pin and the clamping portion, The gripping portion is gripped to displace the second flange portion, A split column guiding work method characterized by inserting the guide pin into the first screw insertion hole.

9. Using a pair of first and second split pole guides, The guide pin of the first split pole guide is inserted into one of the two second screw insertion holes arranged on opposite sides of each other, and the guide pin of the second split pole guide is inserted into the other of the two second screw insertion holes arranged on opposite sides of each other, With the upper split pole inclined relative to the vertical direction so that the second screw insertion hole through which the guide pin of the first split pole guide is inserted is positioned lower than the second screw insertion hole through which the guide pin of the second split pole guide is inserted, the gripping portions of the first split pole guide and the second split pole guide are gripped to displace the second flange portion; A split column guiding work method as described in claim 8, wherein after the guide pin of the first split column guiding tool is inserted into a specific first screw insertion hole, the inclination of the upper split column is reduced and the guide pin of the second split column guiding tool is inserted into another first screw insertion hole.

10. The split pole guiding operation method according to claim 9 , wherein the guide pin of the first split pole guiding tool is longer than the guide pin of the second split pole guiding tool.

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