JP2007321444A - Alignment apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an alignment apparatus which carries out alignment of bolt holes or rivet holes without producing noise, and imposes only a small burden on the operator. <P>SOLUTION: The alignment apparatus 20 carries out alignment of the bolt holes 14, 15, 15 by minutely moving a web 12a of a beam fixing member 12 and two splice plates 13 arranged on both sides of the same which are superposed on each other and temporarily fixed to each other, in an in-plane direction, such that the bolt holes 14, 15, 15 communicate with each other. The alignment apparatus is formed of: an alignment pin 21 having an alignment portion 21a inserted into the bolt holes 14, 15, 15 almost without a gap therebetween, a core adjusting portion 21b coaxially extending from one edge of the alignment portion 21a and tapered toward a distal end thereof, and a bolt portion 21c coaxially extending from one edge of the core adjusting portion 21b; a thrust bearing 23 which is externally fitted onto an intermediate portion of the bolt portion 21c of the alignment pin 21; and a nut member 24 which is screwed onto a distal end of the bolt portion 21c of the alignment pin 21. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a centering device that can be suitably used when a plurality of metal plates are overlapped and bolted.

  In general, when constructing steel structures, temporarily connect columns and beams using temporary bolts that are slightly smaller in diameter than the bolt holes, adjust the installation of the columns and beams, and then adjust the diameter of the bolt holes. The main bolt is used for this connection. More specifically, when fixing a beam material made of H-shaped steel to a steel pipe column, first, the web portion of the beam material is overlapped on the gusset plate fixed to the steel pipe column, and the bolt hole and beam material of the gusset plate are overlapped. A temporary bolt having a diameter smaller than that of the bolt hole is inserted into the bolt hole, and the steel pipe column and the beam material are temporarily fixed by the temporary bolt. Next, after adjusting the installation, this centering is carried out over the bolt hole of the gusset plate and the bolt hole of the beam member by using a centering pin having a body portion having a diameter suitable for the bolt hole and a taper portion for insertion. With the pin driven in a hammer and centering both bolt holes, replace the temporary bolts with bolts with diameters that fit the bolt holes in order, and install the gusset plate and the web part of the beam. It couple | bonds and the beam material is being fixed to the steel pipe pillar (for example, refer patent document 1).

JP-A-7-292992

  By the way, as described in Patent Document 1, when the centering pin is driven into the bolt hole with a hammer, the centering pin is driven with a hammer. There was a problem of causing trouble. In addition, in construction sites such as high-rise housing, it is necessary to wield a hammer in an unstable high place, so the work burden has been greatly improved.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a centering device that can align bolt holes and rivet holes without generating noise, and has a low burden on an operator.

  In a first centering device according to the present invention, adjacent metal plates are obtained by minutely moving a plurality of metal plates, which are superposed and temporarily fixed, so that the plurality of connection holes communicate with each other in the in-plane direction. A centering device for centering the connecting hole, and a core aligning portion that is inserted through the connecting hole without a substantial gap, and a core that extends coaxially from one end of the centering portion and decreases in diameter toward the tip side. A centering pin having an adjustment part, a screw part extending coaxially from one end of the core adjustment part, a thrust bearing externally fitted in the middle part of the screw part of the centering pin, and a screw part of the centering pin A nut member that is screwed to the tip side, the screw part of the centering pin is mounted in the connecting hole of the metal plate, and a thrust bearing is provided in the middle of the screw part that protrudes on the opposite side to the insertion side of the centering pin And the tip of the screw The nut member is screwed onto the nut and the nut member is rotated in the direction in which the centering pin is pulled into the connecting hole. By pulling the part into the connecting hole, the connecting hole is aligned.

  In the first centering device, the nut member is screwed into the threaded part of the centering pin, and the core adjusting part and the centering part of the centering pin are pulled into the connecting hole, so that the connecting hole of the adjacent metal plate is formed. Because it can be centered, unlike the conventional method of centering by hitting the centering pin with a hammer, it prevents the generation of noise when centering and effectively prevents inconvenience to neighboring residents due to noise. it can. In addition, the rotation operation of the nut member can be performed manually using a spanner or a wrench, or can be performed using an electric tool or the like, so that the burden on the operator can be reduced as compared with the case of swinging the hammer.

  Here, as the thrust bearing, a pair of ring members, a plurality of steel balls disposed between the ring members, and a bottomed cylindrical housing member that houses the steel balls and the ring members, A holding portion for holding the outer edge portion of the ring member disposed on the opening side is formed at the opening side end portion of the housing member, and both the ring member and the steel ball are integrally incorporated in the housing member. Things can be used. Normally, a thrust bearing is configured to be integrated in a state where it is assembled to an object to be assembled. However, if it is configured to be integrated with a storage member as in the present invention, the handleability of the thrust bearing is improved. Since it can improve markedly, it is preferable. This thrust bearing can also be applied to various devices other than the centering device.

  The second centering device according to the present invention is configured such that a plurality of metal plates that are stacked and temporarily fixed are finely moved in the in-plane direction so that the plurality of connection holes communicate with each other, and are adjacent to each other. A centering device for centering the connecting hole, and a core aligning portion that is inserted through the connecting hole without a substantial gap, and a core that extends coaxially from one end of the centering portion and decreases in diameter toward the tip side. A guide jig having a centering pin having an adjustment portion, a housing portion for movably housing the centering pin, and a screw hole extending continuously from the housing portion, the housing portion being coaxial with the connection hole A guide jig that is connected to the metal plate and a bolt member that is screwed into a screw hole of the guide jig and pushes the centering pin into the communication hole; The centering pin was inserted with the centering part at the back. In this state, the guide jig is fixed to the metal plate so that the centering pin is coaxial with the connection hole, the bolt member is rotated, and the centering member is pushed into the connection hole to align the connection hole. To do.

  In the second centering device, by rotating the bolt member and pushing the core adjusting part and centering part of the centering pin into the connecting hole, the connecting hole of the adjacent metal plate can be centered. Unlike the conventional method of centering by hitting the centering pin, it is possible to prevent the occurrence of noise during centering and effectively prevent inconvenience to neighboring residents. Moreover, since the rotation of the bolt member can be performed manually using a spanner or a wrench, or using an electric tool or the like, the burden on the operator can be reduced as compared with the case of swinging the hammer.

  Here, in the second centering device, one of the steel balls or the pin member is embedded and fixed at the center of the other end face of the centering portion, and the other of the steel balls or the pin member is embedded and fixed at the tip of the bolt member. This is a preferred embodiment. With this configuration, the centering pin can be pushed into the connecting hole while making the steel ball point-contact with the pin member, so even if there is some play between the guide jig housing and the centering pin, the centering pin Can be smoothly moved along the housing portion, and the problem that the outer peripheral surface of the centering pin scratches the inner peripheral surface of the housing portion during centering can be prevented. Further, since only the steel ball and the pin member can be made of a hard metal material and the other parts can be made of a relatively soft and inexpensive material, the manufacturing cost of the centering pin and the bolt member can be reduced.

  In the first and second centering apparatuses, as operation means for rotating the bolt member or nut member, a socket fitted to the bolt member or nut member, a speed reducer for rotating the socket at a reduced speed, and a speed reducer made of metal It is a preferred embodiment to include an operating means having a reaction force receiving member that is fixed so as not to rotate with respect to the plate. In this case, since the bolt member or the nut member can be rotated at a reduced speed by the speed reducer, the centering pin can be easily inserted even when the insertion resistance of the centering pin with respect to the connecting hole is large.

  In the first and second centering apparatuses, it is preferable that the plurality of metal plates are H-shaped steel web portions and splice plates disposed on both sides of the web portions.

  According to the first centering device and the second centering device according to the present invention, by rotating the nut member or the bolt member, the core adjusting portion and the centering portion of the centering pin are pulled into the connection hole, By pushing it in, the connection holes of adjacent metal plates can be centered, so unlike the conventional method of centering by hitting the centering pin with a hammer, it prevents the generation of noise when centering, Noise can be effectively prevented from causing inconvenience to neighboring residents. In addition, since the rotation operation of the nut member or the bolt member can be performed manually using a spanner or a wrench, or using an electric tool or the like, the burden on the operator can be reduced as compared with the case of swinging the hammer.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1 and FIG. 2, first, the structure of the steel tube column 10 of the steel structure to which the first centering device 20 is applied and the structure of the temporary joint portion of the beam material 11 will be described. A beam fixing member 12 made of H-shaped steel protruding laterally is welded and fixed in the vicinity of the end of the beam, and a beam material 11 made of H-shaped steel is connected in series with the beam fixing member 12 in a state where the ends are butted. Is provided. Splice plates 13 are provided on both sides of the web portion 11a of the beam member 11 and the web portion 12a of the beam fixing member 12, and a plurality of bolt holes 14 are formed in both web portions 11a and 12a. The two splice plates 13 are provided with a plurality of bolt holes 15 having the same diameter as the bolt holes 14 so as to correspond to the bolt holes 14. And the steel pipe pillar 10 and the beam material 11 are the state which has arrange | positioned the splice plate 13 to the both front and back sides over both web parts 11a and 12a, and a pair of upper and lower bolt holes 15 arranged at the left and right ends of the splice plate 13; 15 and the corresponding bolt portions 14 of the web portions 11a and 12a are temporarily coupled by attaching and fastening temporary bolts 16 respectively.

  After temporarily joining the steel pipe column 10 and the beam material 11 in this manner, the installation of the steel pipe column 10 and the beam material 11 is adjusted, and the bolts (not shown) having the same diameter as the bolt holes 14, 15, 15 are adjusted. The temporary bolt 16 can be easily mounted over the bolt hole 14 of the web part 11a and the bolt holes 15 and 15 of both splice plates 13, and the bolt hole 14 of the web part 12a. And the diameter of the bolt holes 14, 15, 15 are set to be slightly smaller (for example, 5% to 15% smaller) so that they can be easily mounted over the bolt holes 15, 15 of both splice plates 13. . For this reason, at the time of temporary coupling, the centers of the three bolt holes 14, 15 and 15 are rarely arranged in a completely coaxial manner, and are arranged at slightly shifted positions as shown in FIG. . The first centering device 20 aligns the centers of the three bolt holes 14, 15, and 15 when the steel pipe column 10 and the beam material 11 that are temporarily joined in this way are finally joined. This is intended to allow easy loading into the three bolt holes 14, 15, 15. The bolt holes 14, 15, and 15 correspond to connecting holes, and both web portions 11a and 12a and the two splice plates 13 correspond to metal plates.

  Here, the number of the bolt holes 14, 15, 15 can be appropriately set according to the dimensions of the steel pipe column 10 and the beam material 11. Moreover, although both the web parts 11a and 12a and the two splice plates 13 were temporarily connected with the two temporary bolts 16, it is also possible to temporarily connect with the other number of temporary bolts 16. Furthermore, although the splice plate 13 is overlapped on the web portions 11a and 12a, the present invention can be applied to a coupling structure in which the splice plate 13 is overlapped on the flange portions 11b and 12b and both are bolted. The present invention can also be applied to a coupling structure in which the splice plates 13 are overlapped with the web portions 11a, 12a and the flange portions 11b, 12b and bolted. Furthermore, although the beam material 11 is connected to the steel pipe column 10, the present invention can also be applied to a steel frame structure configured to connect the steel pipe column 10 in series with the column interposed therebetween. Further, in the present embodiment, the present invention is applied to the centering device 20 for centering the bolt holes 14, 15, 15 when the steel pipe column 10 and the beam material 11 are finally coupled, but the metal plate The present invention can be applied to the centering of mounting holes of bolts and rivets in any connecting portion as long as the connecting portions are overlapped with each other and connected by a plurality of bolts or rivets.

  Next, the first centering device 20 will be described. The centering of the bolt holes 14 of the web portion 11a of the beam member 11 and the bolt holes 15 and 15 of the two splice plates 13 and the web of the beam fixing member 12 are described. Since the centering of the bolt holes 14 of the portion 12a and the bolt holes 15 and 15 of the two splice plates 13 can be performed by the same first centering device 20, in this embodiment, the beam fixing member 12 is used. The case where the bolt holes 14 of the web portion 12a and the bolt holes 15 and 15 of the two splice plates 13 are aligned will be described.

  As shown in FIGS. 1 to 3, the first centering device 20 includes a centering portion 21 a that is inserted through the three bolt holes 14, 15, and 15 without any substantial gap, and is coaxial from one end of the centering portion 21 a. A centering pin 21 having a core adjusting part 21b that extends toward the tip side and contracts in diameter toward the tip end, a screw part 21c that extends coaxially from one end of the core adjusting part 21b, and a screw part 21c of the centering pin 21 A height adjusting sleeve 22 and a thrust bearing 23 that are externally fitted in the middle portion, a nut member 24 that is screwed to the tip end side of the screw portion 21c of the centering pin 21, and an operating means for rotating the nut member 24 25. Then, the screw portion 21c of the centering pin 21 is attached to the three bolt holes 14, 15 and 15 from the rear surface side of the beam fixing member 12, and the screw portion 21c protruding to the front surface side of the centering pin 21 has a high height. The thickness adjusting sleeve 22 and the thrust bearing 23 are sequentially fitted out, the nut member 24 is screwed into the tip side portion of the screw portion 21c, and the nut member 24 is rotated by the operating means 25. While receiving the acting axial load with the thrust bearing 23 and the height adjusting sleeve 22, the core adjusting portion 21 b and the core aligning portion 21 a of the centering pin 21 are pulled into the bolt holes 14, 15, 15, and the bolt hole 14, 15 and 15 are configured to be aligned. It is also possible to omit the operation means 25 and directly rotate the nut member 24 with a spanner, a wrench or an electric tool.

  The centering pin 21 is manufactured by cutting a metal bar. The diameter of the centering portion 21a is set to a diameter that can be inserted through the bolt holes 14, 15, and 15 with almost no gap, and the length of the centering portion 21a is set to at least the plate thickness of the web portion 12a. With the 21a inserted into the three bolt holes 14, 15, 15, the centering portion 21a is disposed across the bolt hole 14 of the web portion 12a and the bolt holes 15, 15 of the two splice plates 13. Thus, the three bolt holes 14, 15, 15 are configured to be aligned. The screw portion 21c has a slightly smaller diameter than the bolt holes 14, 15, and 15. For example, the screw portion 21c has the same diameter as that of the temporary bolt 16, thereby temporarily connecting the web portion 12a and the two splice plates 13. The threaded portion 21c can be smoothly inserted into the two bolt holes 14, 15, and 15. The proximal end portion of the core adjusting portion 21b is configured to have the same diameter as the core aligning portion 21a, the distal end portion of the core adjusting portion 21b is configured to have the same diameter as the screw portion 21c, and the middle portion of the core adjusting portion 21b is on the screw portion 21c side. It is formed in a tapered shape that decreases in diameter as it goes. If the inclination angle θ with respect to the axial center of the outer peripheral surface of the core adjusting portion 21b is too small, the pull-in amount of the centering pin 21 is increased and the operability is deteriorated. Since the inner surfaces of the bolt holes 14, 15 and 15 may be damaged, it is preferable to set the angle to 5 ° to 10 ° with respect to the axis.

  A fixing hole 26 is formed in a substantially central portion of the end face of the centering pin 21 on the side of the centering portion 21a, and a steel ball 27 is embedded and fixed in the fixing hole 26 by forcible fitting. This steel ball 27 is provided with the centering pin 21 so that it can also be used in a second centering device 60 described later, and can be omitted in the first centering device 20.

  The height adjustment sleeve 22 is formed of a cylindrical member. The inner diameter of the height adjusting sleeve 22 is set to be approximately the same diameter as the centering portion 21a, and the length of the height adjusting sleeve 22 is adjusted by aligning the three bolt holes 14, 15, 15 as shown in FIG. Sometimes, it is set to a length that can accommodate the lead adjusting portion 21b.

  As shown in FIGS. 2 and 4, the thrust bearing 23 includes a pair of ring members 30 arranged in parallel on the same axis, a plurality of steel balls 31 arranged between the ring members 30, and a plurality of steel balls. A holding ring 32 that rotatably holds 31 between both ring members 30, and a pair of ring members 30, a steel ball 31, and a bottomed cylindrical receiving member 33 that holds the holding ring 32 are provided. An insertion hole 34 through which the screw portion 21c can be inserted is formed at the bottom of the housing member 33, and the inner diameters of both the ring member 30 and the holding ring 32 are formed to have diameters through which the screw portion 21c can be inserted. In the state where the thin cylindrical holding portion 35 is formed at the end of the accommodating member 33 on the opening side, and the pair of ring members 30, the steel balls 31, and the holding ring 32 are accommodated in the accommodating member 33, By bending the holding portion 35 inward, the pair of ring members 30, the steel balls 31, and the holding ring 32 are integrally incorporated in the housing member 33. 2, when the nut member 24 is screwed into the screw portion 21c, the nut member 24 is received by the splice plate 13 via the thrust bearing 23 and the height adjusting sleeve 22, and further the nut member 24. As shown in FIG. 5, the core adjusting portion 21b and the center aligning portion 21a are pulled into the three bolt holes 14, 15, and 15, and the bolt holes 14, 15, and 15 are aligned. Become. At this time, the end of the nut member 24 is rotatably pressed against the ring member 30 exposed to the outside from the thrust bearing 23, so that the nut member 24 can be rotated without difficulty.

  The operation means 25 includes a speed reduction means 40 for rotating the nut member 24 at a reduced speed and a reaction force receiving means 41 for receiving a reaction force acting on the speed reduction means 40. A wrench, a spanner, or the like is provided on the input shaft 42A of the speed reduction means 40. The nut member 24 can be rotated through the socket 45 connected to the output shaft 44B by fitting the tool 43 and rotating the input shaft 42A.

  The speed reduction means 40 includes a planetary gear type small speed reducer 46A arranged on the input side and a planetary gear type large speed reducer 46B arranged on the output side. Both speed reducers 46A and 46B include sun gears 48A and 48B, four planetary gears 49A and 49B meshing with the sun gears 48A and 48B, and a carrier 50A that rotatably supports the five gears 48A, 48B, 49A, and 49B. , 50B, and cylindrical housings 52A, 52B having ring gears 51A, 51B meshing with the planetary gears 49A, 49B on the inner peripheral surfaces, respectively, are well-known structures. The sun gear 48A of the small reduction gear 46A is integrally provided with an input shaft 42A. When the input shaft 42A is rotated by the tool 43, the planetary gear 49A rotates while meshing with the sun gear 48A and meshes with the ring gear 51A. However, the sun gear 48A is revolved together with the carrier 50A, and the output shaft 44A provided integrally with the carrier 50A is configured to rotate at a reduced speed. The sun gear 48B of the large speed reducer 46B is provided with an input shaft 42B that fits inside the output shaft 44A of the small speed reducer 46A. The input of the large speed reducer 46B is accompanied by the rotation of the output shaft 44A of the small speed reducer 46A. When the shaft 42B rotates, the planetary gear 49B rotates while meshing with the sun gear 48B, revolves with the carrier 50B around the sun gear 48B while meshing with the ring gear 51B, and the output shaft 44B provided on the carrier 50B rotates at a reduced speed. . Thus, the socket 45 detachably connected to the output shaft 44B is configured to rotate at a reduced speed.

  As shown in FIGS. 2 and 3, the reaction force receiving means 41 includes a mounting member 55 fixed to the bolt holes 14, 15, 15 adjacent to the bolt holes 14, 15, 15 for mounting the core alignment pins 21, and A fixing ring 56 fixed to the housing 52B of the large reduction gear 46B, and a connecting plate 57 that connects the attachment member 55 and the fixing ring 56 so as not to be relatively rotatable are provided. The mounting member 55 is provided with a main body portion 55a having a diameter larger than that of the bolt holes 14, 15, and 15, and the main body portion 55a is integrally provided with a screw portion 55b having a diameter slightly smaller than that of the bolt holes 14, 15, and 15. In the mounting member 55, the screw portion 55b is attached to the three bolt holes 14, 15, 15 from the front side of the beam fixing member 12, and the nut 58 is fastened to the screw portion 55b protruding to the rear side of the beam fixing member 12. Thus, it is fixed to the beam fixing member 12. A slit 55c is formed in the main body 55a, and the connecting plate 57 is fixed to the mounting member 55 so as to protrude forward by attaching the rear end of the connecting plate 57 to the slit 55c and screwing it. Yes. The fixing ring 56 is formed with a pair of guide portions 56a projecting sideways, the front end portion of the connecting plate 57 is mounted between the guide portions 56a, and the connecting plate 57 is moved between the guide portions 56a. The operation means 25 can be assembled to the bolt holes 14, 15, 15 having different center distances. However, in this embodiment, the reaction force receiving means 41 is fixed to the bolt holes 14, 15, 15. However, the reaction force receiving means is fixed by providing a clamper for clamping the flange portion 12 b of the beam fixing member 12. It is also possible to do.

  Next, a method of aligning the bolt holes 14 of the web portion 12a of the beam fixing member 12 and the bolt holes 15 and 15 of the two splice plates 13 using the first centering device 20 will be described.

  First, as shown in FIGS. 1 and 2, the screw portion 21 c of the centering pin 21 is inserted into the bolt holes 14, 15, 15 from the rear side of the beam fixing member 12, and protrudes to the front side of the beam fixing member 12. After the height adjusting sleeve 22 and the thrust bearing 23 are sequentially attached to the portion 21c, the nut member 24 is screwed into the end portion of the screw portion 21c. On the other hand, the screw portion 55b of the attachment member 55 of the reaction force receiving means 41 is attached to the adjacent bolt holes 14, 15, 15 from the front side, and the nut 58 is screwed into the screw portion 55b protruding rearward to attach the attachment member. 55 is fixed. The connecting plate 57 can be fixed to the mounting member 55 after fixing the mounting member 55 to the bolt holes 14, 15, 15. It is preferable to fix.

  Next, the socket 45 of the operating means 25 is fitted to the nut member 24, and the front end portion of the connecting plate 57 is mounted between the guide portions 56a of the operating means 25, and a wrench, spanner or the like is attached to the input shaft 42A of the operating means 25. A tool 43 is attached.

  In this manner, with the first centering device 20 attached to the beam fixing member 12, the nut member 24 is decelerated and rotated via the operating means 25 with the tool 43, and as shown in FIG. The centering portion 21a is moved to the front side so that the three bolt holes 14, 15, 15 are arranged over the three bolt holes 14, 15, 15, and the three bolt holes 14, 15, 15 are aligned. Then, with the bolt holes 14, 15, 15 aligned, the center aligning device 20 is removed in the reverse procedure, and the bolts are attached to the three aligned bolt holes 14, 15, 15. Become. The remaining bolt holes 14, 15 and 15 are substantially aligned by aligning one bolt hole 14, 15, and 15 so that the bolt can be mounted and fixed as it is. In this case, the bolt is mounted in the bolt holes 14, 15, 15 without centering. If the core is slightly misaligned, the core is aligned using the first aligning device 20 in the same manner as described above, and at least 1 to 3 bolt holes 14, 15, 15 are aligned. , The centers of all the bolt holes 14, 15, 15 are matched. In addition, in the state of being fully coupled, the temporary bolt 16 that has been fastened in advance is extracted, and the permanent bolt is also mounted at the mounting position of the temporary bolt 16 to complete the final coupling. Further, the bolts can be mounted and fixed in a state in which a plurality of bolt holes 14, 15, 15 are aligned by a plurality of centering devices 20.

  Next, the second centering device 60 will be described. However, the same members as those in the above embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 6 and 7, the second centering device 60 includes a centering pin 21 used in the above embodiment, a housing part 61 a for housing the centering pin 21 movably, and a housing part. A guide jig 61 having a screw hole 61b extending continuously to 61a, the guide jig 61 being fixed to the beam fixing member 12 so that the accommodating portion 61a communicates with the bolt holes 14, 15, and 15; A bolt member 62 that is screwed into the screw hole 61b of the jig 61 to push the centering pin 21 into the three bolt holes 14, 15, and 15 and the operating means 25 used in the above embodiment are provided. Yes.

  The guide jig 61 will be described. An elongated flat plate-like attachment portion 61c is provided, and a cylindrical portion 61d extending forward is integrally formed at the center of the attachment portion 61c. A screw hole 61b is formed in the front part of the cylinder part 61d, and an accommodation part 61a is formed in the rear part of the cylinder part 61d. The screw hole 61b and the accommodation part 61a are provided on the same axis. One through-hole 63 is formed in the right part of the attachment part 61c, and two through-holes 63 are formed in the left part of the attachment part 61c. The guide jig 61 has a fixing bolt 64 mounted from the front side of the beam fixing member 12 over the right through hole 63 and the three bolt holes 14, 15, 15, and the beam fixing member is attached to the end of the fixing bolt 64. 12, the nut member 65 is fastened from the rear surface side, and the threaded portion 55 b of the attachment member 55 is mounted from the front side of the beam fixing member 12 over the left through hole 63 and the three bolt holes 14, 15, 15. The nut 58 is fastened to the tip of the threaded portion 55b from the rear surface side of the beam fixing member 12 so as to be fixed to the beam fixing member 12. The reason why the two through holes 63 are provided in the left part of the mounting portion 61c is that the guide jig 61 can be fixed to the beam fixing member 12 having a large center distance between the bolt holes 14, 15, and 15. It is to make it.

  The accommodating portion 61a of the guide jig 61 is configured to have substantially the same diameter as the aligning portion 21a of the aligning pin 21. In the accommodating portion 61a, the aligning pin 21 has an axial direction with the aligning portion 21a at the back side. Is movably loaded. A pin member 66 that is harder than the bolt member 62 is planted at the tip of the bolt member 62 that is screwed into the screw hole 61b of the mounting portion 61c, and the bolt member 62 is screwed so that the pin member 66 is aligned. While pressing the steel ball 27 of the pin 21 by point contact, the core adjusting portion 21b and the core aligning portion 21a of the core aligning pin 21 are pushed into the three bolt holes 14, 15, 15 so that the three bolt holes 14, 15 and 15 are configured to be aligned. The pin member 66 and the steel ball 27 are not necessarily provided, but are preferably provided because the centering pin 21 can be smoothly moved in the accommodating portion 61a. Reference numeral 67 is a connecting member fixed to the tip of the centering pin 21 and is used to prevent the centering pin 21 from falling by hooking a string or the like on the ring part 67a of the connecting member 67.

  When the bolt holes 14, 15, 15 are centered by the second centering device 60, the centering portion 21 a is placed in the housing portion 61 a of the guide jig 61 as shown in FIGS. 6 and 7. With the centering pin 21 inserted on the back side, the screw part 21c is inserted into the three bolt holes 14, 15, 15 to be centered, and the centering pin 21 is attached from the front side of the beam fixing member 12. Then, the bolt member 62 is mounted over the through hole 63 of the mounting portion 61c and the bolt holes 14, 15 and 15, and the nut member 65 is fixed to the end of the fixing bolt 64 from the rear side of the beam fixing member 12, The screw portion 55b of the attachment member 55 of the reaction force receiving means 41 is mounted from the front side through the through hole 63 and the bolt holes 14, 15, and 15, and the nut 58 is fastened to the screw portion 55b protruding rearward to guide The jig 61 is fixed to the beam fixing member 12. The connecting plate 57 can be fixed to the mounting member 55 after fixing the mounting member 55 to the bolt holes 14, 15, 15. It is preferable to fix it.

  Next, the socket 45 is attached to the output shaft 44B of the operation means 25, the socket 45 is fitted to the head portion 62a of the bolt member 62, and the front end portion of the connecting plate 57 is mounted between the guide portions 56a of the operation means 25. The tool 43 is attached to the input shaft 42A of the operation means 25.

  Thus, with the second centering device 60 attached to the beam fixing member 12, the bolt member 62 is decelerated and rotated through the operating means 25 with the tool 43, and as shown in FIG. The centering portion 21 a is pushed into the bolt holes 14, 15, 15 so that the three bolt holes 14, 15, 15 are centered so that the three bolt holes 14, 15, 15 are arranged. . Then, with the bolt holes 14, 15, 15 being centered, the second centering device 60 is removed in the reverse procedure, and the bolts are attached to the centered bolt holes 14, 15, 15. become. The remaining bolt holes 14, 15 and 15 are substantially aligned by aligning a set of bolt holes 14, 15 and 15, so that the bolt can be mounted and fixed as it is. In this case, the bolt is mounted in the bolt holes 14, 15 and 15 without aligning the cores. If the center is slightly displaced, the second centering device 60 is used for centering in the same manner as described above, and the centers of all the bolt holes 14, 15, 15 are matched. In addition, in a state where the main bolts are partially connected, the temporary bolts 16 fastened in advance are extracted, and the main bolts are mounted at the mounting positions of the temporary bolts 16 to complete the main bonding. In addition, a plurality of parts other than the speed reduction means 40 in the second centering device 60 are assembled in advance to the beam fixing member 12, and the speed reduction means 40 are sequentially replaced so that the plurality of sets of bolt holes 14, 15, and 15 are sequentially aligned. It can also be configured to match.

  In the second alignment device 60, the case where the alignment pin 21 having the screw portion 21c is used has been described. However, as shown in FIG. 9, a short alignment pin 21A in which the screw portion 21c is omitted is used. be able to. In this case, as shown in FIG. 10, the second centering device 60 is fixed to the beam fixing member 12 in a state where the centering pin 21A is assembled to the accommodating portion 61a with the centering portion 21a at the back side. Will do.

Front view of the connecting part of steel columns and beams II-II sectional view with the first centering device assembled Front view of concentric alignment device Thrust bearing longitudinal section Explanatory drawing of the centering method using the same centering device FIG. 2 equivalent view of the second centering device Front view of the connecting part of the beam fixing member and beam with the guide jig of the concentric alignment device attached Explanatory drawing of the centering method of the centering device Front view of centering pins with other configurations Cross-sectional view of a second centering device using the same centering pin

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Steel pipe pillar 11 Beam material 11a Web part 11b Flange part 12 Beam fixing member 12a Web part 12b Flange part 13 Splice plate 14 Bolt hole 15 Bolt hole 16 Temporary bolt 20 1st centering apparatus 21 Centering pin 21a Centering part 21b Core adjusting portion 21c Screw portion 22 Height adjusting sleeve 23 Thrust bearing 24 Nut member 25 Operating means 26 Fixing hole 27 Steel ball 30 Ring member 31 Steel ball 32 Holding ring 33 Housing member 34 Insertion hole 35 Holding portion 40 Decreasing means 41 Anti Force receiving means 42A Input shaft 44A Output shaft 46A Small reduction gear 48A Sun gear 49A Planetary gear 50A Carrier 51A Ring gear 52A Housing 42B Input shaft 44B Output shaft 46B Large reduction gear 48B Sun gear 49B Planetary gear 50B Carrier 51B Ring gear 52 B Housing 43 Tool 45 Socket 55 Mounting member 55a Body portion 55c Slit 55b Screw portion 56 Fixing ring 56a Guide portion 57 Connecting plate 58 Nut 60 Second alignment device 61 Guide jig 61a Housing portion 61b Screw hole 61c Mounting portion 61d Tube Portion 62 Bolt member 62a Head 63 Through-hole 64 Fixing bolt 65 Nut member 66 Pin member 67 Connection member 67a Ring portion 21A Centering pin

Claims (6)

This is a centering device that aligns the connecting holes of adjacent metal plates by moving a plurality of metal plates that are stacked and temporarily fixed so that the connecting holes communicate with each other. And
A centering part that is inserted through the connecting hole without any gap, a core adjusting part that extends coaxially from one end of the centering part and decreases in diameter toward the tip side, and extends coaxially from one end of the core adjusting part. A centering pin having a threaded portion;
A thrust bearing externally fitted to the middle of the threaded portion of the centering pin;
A nut member screwed to the tip side of the threaded portion of the centering pin;
The screw part of the centering pin is mounted in the connecting hole of the metal plate, and the thrust bearing is fitted on the middle part of the screw part protruding to the opposite side to the insertion side of the centering pin, and the tip of the screw part The nut member is screwed to the side, and the nut member is rotated in the direction in which the centering pin is pulled into the connecting hole, so that the load acting on the nut member is received by the thrust bearing while the core adjusting portion and the core of the centering pin are received. A centering apparatus, wherein the aligning portion is pulled into the connecting hole to align the connecting hole.   The thrust bearing includes a pair of ring members, a plurality of steel balls disposed between the ring members, and a bottomed cylindrical housing member that houses the steel balls and the ring members. A holding part that holds the outer edge part of the ring member arranged on the opening side is formed at the opening side end, and the ring member and the steel ball are integrally incorporated in the housing member. The centering device according to claim 1. This is a centering device that aligns the connecting holes of adjacent metal plates by moving a plurality of metal plates that are stacked and temporarily fixed so that the connecting holes communicate with each other. And
A centering pin having a centering part that is inserted through the connection hole without a substantial gap, and a core adjusting part that extends coaxially from one end of the centering part and decreases in diameter toward the tip side;
A guide jig having a housing portion for movably housing the centering pin and a screw hole extending continuously from the housing portion, the housing portion being coaxially connected to the connecting hole and fixed to the metal plate. A guide jig;
A bolt member that is screwed into the screw hole of the guide jig and pushes the centering pin into the communication hole;
The guide jig is fixed to the metal plate so that the centering pin is coaxial with the connection hole with the centering part at the back side and the centering pin inserted in the receiving part of the guide jig. And a centering device for centering the connecting hole by rotating the bolt member and pushing the centering member into the connecting hole.   The centering device according to claim 3, wherein one of a steel ball and a pin member is embedded and fixed at a central portion of the other end surface of the centering portion, and the other of the steel ball and the pin member is embedded and fixed at a tip portion of the bolt member.   As operation means for rotating the bolt member or nut member, a socket fitted to the bolt member or nut member, a speed reducer for reducing and rotating the socket, and a reaction force for fixing the speed reducer to the metal plate in a non-rotatable manner The centering device according to any one of claims 1 to 4, further comprising operating means having a receiving member. The centering device according to any one of claims 1 to 5, wherein the plurality of metal plates are H-shaped steel web portions and splice plates arranged on both sides of the web portions.

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