JP2009203763A - Pin device and pin its attaching method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To join a pin device and a connector member with each other even if the pin device and the connector member are somewhat misaligned by providing the pin device as an earthquake resistant member attached to an outer shell member of a structure with a displacement adjusting function. <P>SOLUTION: The pin device 1 comprises an attaching plate 10, an axial pin 20 fixed to one face of the attaching plate 10 and having an axis set in the normal line direction of the attaching plate 10, an outer tube section 31 fitted to the axial pin 20 and capable of turing around the axial pin 20, an outer tube connecting section 40 connected with the outer tube section 31 and capable of turning about the axial pin 20 synchronously with the outer tube section 31 and a restraining member for restraining the outer tube section 31 from moving in the axial direction. An axial direction adjustment member capable of being fitted to the axial pin 20 is removably installed between the axial pin 20 and the outer tube section 31. Thus, the outer tube section 31 can be arranged at a desired position of the axial pin 20. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a pin device and a mounting method thereof, and a pin device capable of easily combining a pin device and a connecting material connected to the pin device, and to accurately attach the pin device to a desired position. It relates to a possible mounting method.

  For the purpose of improving the seismic performance of existing structures, connection materials are used that are connected with both ends of the pin device being rotatable, such as when braces are newly installed on the building frame or when connecting bridge girders. It is often done. Thus, by making both ends of the connecting material pin-joined, transmission of a bending moment from the connecting material to the structure can be avoided, and a mechanically clear structure can be obtained. In Patent Document 1, it is proposed to use a spherical bearing, a pin, or the like in a portion corresponding to the pin device.

JP 2000-54677 A

  In Patent Document 1, the configuration of the spherical bearing 13 or the pin is not disclosed at all. The pin device is often a member that functions in the event of a large earthquake with a low occurrence frequency, and its function is required not to deteriorate during a long service period. For this reason, in the pin device having the structure as described above, the clearance between the outer peripheral surface of the shaft pin and the inner peripheral surface of the connecting member side end portion is reduced, and the shaft pin portion of the pin device is corroded. In addition to preventing this, a sealing device is arranged in the vicinity of the end of the shaft pin so that foreign matter does not enter the clearance.

  However, when the clearance is set to be small in the pin device in consideration of maintenance, it is often difficult to externally fit the cylindrical end portion of the connecting material to the shaft pin of the pin device. It is known that this is caused by an attachment error that occurs when the pin device is attached to a structure or the like, and the accuracy of the pin device or the structure itself to which the pin device is attached.

Therefore, as a first object of the present invention, by providing a pin device with a displacement adjustment function, a pin device capable of combining both of them even if there is some deviation in the connection between the pin device and the connecting material. It is to provide.
A second object of the present invention is to provide a pin device mounting method capable of accurately mounting the pin device at a desired mounting position.

  In order to achieve the above object, the present invention provides a base plate attached to a structure, an axial pin fixed to one surface of the base plate and having an axis set in the normal direction of the base plate, and an external fit to the axial pin. An outer cylinder that rotates about the shaft pin, an outer cylinder coupling portion that is connected to the outer cylinder and rotates about the shaft pin in synchronization with the outer cylinder, and an axial movement of the outer cylinder. A pin device including a stopper for suppressing the shaft pin, wherein the shaft pin has a cylindrical body shape whose outer diameter is reduced in multiple steps from the base plate side toward the tip, and the outer cylinder is a first bolt An axial adjustment between the shaft pin and the outer cylinder is made of a cylindrical body having an inner diameter that can be fitted onto the middle diameter portion of the columnar body of the shaft pin. And a second bolt disposed in the outer tube coupling portion at the position of the first bolt hole. Bolts fastened by aligning the holes, between the shaft pin and the outer cylinder, characterized in that so as to perform positional adjustment in the axial and radial directions.

  The second bolt hole is an enlarged bolt hole, and it is preferable to provide a clearance whose position can be adjusted with the first bolt hole when the bolt is fastened.

  At this time, it is preferable that the axial direction adjusting material is a polytetrafluoroethylene sliding plate interposed between the shaft pins at both ends of the outer cylinder.

  The intermediate diameter portion into which the outer cylinder is externally fitted has a plurality of rubber rings housed in a groove-shaped portion formed on the outer peripheral surface, and the outer peripheral surface of the intermediate diameter portion and the inner peripheral surface of the outer cylinder It is preferable that a lubricant is sealed in a sealed space defined by the rubber ring.

  Furthermore, it is preferable that the clearance between the inner diameter of the cylindrical body of the outer cylinder and the outer diameter of the middle diameter portion of the columnar body into which the outer cylinder is fitted is 0.6 mm or less.

  It is preferable that the tip of the cylindrical body of the shaft pin with which the outer cylinder is fitted is chamfered at a predetermined angle.

  The stopper is preferably composed of a double nut.

  As a method invention for attaching the above-described pin device to the structure, a fixing bar is fixed to a part of the structure so that one end protrudes to the pin device side, and the temporary receiving material attached to the structure surface In addition, the base plate of the pin device to which the bolt for adjusting the separation from the structure is screwed is placed with the height adjusted at a predetermined mounting position, and the fixing rod insertion hole formed in the base plate With the fixing rod inserted into the base plate, the protruding length of the separation adjusting bolt is adjusted so that the shaft pin fixed to the base plate is arranged at a predetermined position, and the base plate and the structure After the positioning between the pin device and the structure is completed, a solidifying material is filled between the base plate and the structure, and the pin device is attached to the structure. It is characterized by that.

  According to the present invention, even if there is a slight shift in the connection between the pin device and the connecting member, the pin device is provided with a shift adjustment function, so that both can be easily combined. Moreover, when attaching a pin apparatus, there exists an effect that it can attach to a predetermined attachment position correctly.

  The best mode for carrying out the pin device and the mounting method of the present invention will be described below with reference to the drawings.

  FIG. 1 shows an exploded perspective view of a pin apparatus 1 according to an embodiment of the present invention. Reference numeral 11 denotes a mounting plate 10 as a base plate of the pin device 1 made of a rectangular steel plate. Four PC steel rod holes 11 are formed on the plate surface of the mounting plate 10. The PC steel bar 5 (see FIG. 4) protruding from a predetermined position of the beam 3 as a part of the structure is inserted into the four PC steel bar holes 11. Thereby, the attachment plate 10 is attached to one surface of the structure via the inserted PC steel bar 5. Near the center of the mounting plate 10, four threaded holes (not shown) that can be screwed onto the adjusting bolt 12 are formed. As will be described later, the adjustment bolt 12 is used to secure a predetermined distance between the mounting plate 10 and the structure. In addition, a shaft pin 20 is welded to the center position of the plate surface of the mounting plate 10 so that the radial direction of the mounting plate 10 coincides with the axis thereof. The shaft pin 20 is obtained by cutting the outer peripheral surface of a high-pressure pipe steel pipe, and has a cylindrical body shape whose outer diameter is reduced in three steps from the root to the tip. A large diameter portion 24, a medium diameter portion 25, and a small diameter portion 26 are formed from the mounting plate 10 side. On the peripheral surface of the medium diameter portion 25, square grooves are formed on both sides near the step end portion, and an O-ring 21 is attached to the medium diameter portion 25 so as to be accommodated in the square groove. In addition, for joining the mounting plate 10 and the shaft pin 20, a deep counterbore is formed on the back surface of the mounting plate 10 in the figure, and a tap hole penetrating the mounting plate 10 and the shaft pin 20 is formed. You may join.

  As shown in FIG. 2, a polytetrafluoroethylene pad 43 (hereinafter referred to as a PTFE pad 43), a pin outer cylinder 30, an outer cylinder holder, and the like on the peripheral surface of the shaft pin 20 in order from the mounting plate 10 side. The joint unit 40, the PTFE pad 44, and the two nuts 45 are mounted, and the pin device 1 is configured. The pin outer cylinder 30 includes a cylindrical outer cylinder part 31 and an outer cylinder flange 32 joined to the outer periphery of the outer cylinder part 31. Bolt holes 33 are formed in the outer cylinder flange 32 in a circumferential shape. The outer tube coupling portion 40 is bolted to an end portion of a connecting material (not shown) interposed between the pin device 1 and provided at both ends of the connecting material. A bolt hole 41 is formed at a position corresponding to the bolt hole 33 formed in the outer cylinder flange 32 at the tip of the outer cylinder coupling portion 40. And the pin outer cylinder 30 and the outer cylinder coupling part 40 are connected via the attachment bolt 42. In addition, you may connect between the pin apparatuses 1 using the connection material which has the outer cylinder coupling part 40 at both ends.

  FIG. 2 shows a cross-sectional view of the pin device 1 after assembly shown in FIG. The outer cylinder flange 32 is fitted to the outer cylinder cylindrical portion 31 in a state where it is reinforced by a plurality of reinforcing ribs 34. The outer cylindrical portion 31 is fitted to the outer peripheral surface of the middle diameter portion 25 of the shaft pin 20. The clearance between the inner diameter of the outer cylinder portion 31 and the outer diameter of the middle diameter portion 25 is to prevent entry of foreign matters such as water and dust into the gap between the pin outer cylinder 30 and the shaft pin 20. It is set small enough. Thereby, it can be made to fit so that a backlash may not arise between the outer cylinder cylindrical part 31 and the intermediate diameter part 25. FIG. In the present embodiment, the difference between the outer diameter of the medium diameter portion 25 and the inner diameter of the outer cylindrical portion 31 is preferably about 0.6 mm or less. In order to easily fit the outer cylindrical portion 31 to the middle diameter portion 25, the stepped portion between the middle diameter portion 25 and the small diameter portion 26 is chamfered with a predetermined inclination to form the chamfered portion 22. Has been. An O-ring 21 is attached to the two grooves formed in the medium diameter portion 25. Thereby, the clearance in the clearance (gap) formed between the inner peripheral surface of the pin outer cylinder 30 and the outer peripheral surface of the shaft pin 20 is achieved. The gap between the two O-rings 21 is filled with a lubricant 23 from an injection hole (not shown), and hard PTFE pads 43 and 44 are disposed on both ends of the outer cylindrical portion 31 to thereby pin the pin. The outer cylinder 30 can smoothly rotate about the shaft pin 20 as an axis.

  Predetermined screws 27 are formed on the outer peripheral surface of the small-diameter portion 26. After the PTFE pads 43 and 44 and the pin outer cylinder 30 are fitted to the medium-diameter portion of the shaft pin 20, two pieces as stoppers are provided. The nut 45 is fastened to the small diameter portion 26. Thereby, it is prevented that the pin outer cylinder 30 moves to the axial direction (left-right direction in the figure) of the pin apparatus 1. FIG. In order to prevent the nut 45 from loosening during the service period of the pin device 1, the nut 45 is prevented from loosening as a double nut.

  Incidentally, as described above, it is difficult to accurately attach the pin device 1 to a desired attachment position such as a side surface of the structure. For this reason, when different pin devices 1 are connected to each other with a connecting material (not shown), a shift occurs between the outer cylinder flange 32 and the outer cylinder coupling portion 40, and the two are assembled by the mounting bolts 42. It may not be possible. By providing the pin device 1 according to the embodiment of the present invention with an adjustment function for such a shift, the outer cylinder flange 32 and the outer cylinder coupling portion 40 can be joined together by a bolt.

  3 is a cross-sectional view showing the positional relationship between the pin outer cylinder 30 and the outer cylinder coupling portion 40. FIG. (A) is a positional relationship between the pin outer cylinder 30 and the outer cylinder coupling portion 40 in the design state, and (b) is an example of a positional relationship between the pin outer cylinder 30 and the outer cylinder coupling portion 40. .

  First, the adjustment function of the pin apparatus 1 when the outer cylinder coupling portion 40 is displaced in the direction perpendicular to the axis (vertical direction in the drawing) with respect to the outer cylinder flange 32 will be described. The bolt hole 33 formed in the outer cylinder flange 32 is set to a normal hole diameter (about +2 mm with respect to the bolt diameter) with respect to the diameter of the mounting bolt 42 to be inserted. On the other hand, the bolt expansion hole 41 of the outer tube coupling portion 40 is set to a hole diameter (so-called expansion hole) larger than the hole diameter of the bolt hole 33. As shown in FIG. 3A, the mounting bolt 42 is set so as to pass through the center of the bolt hole 33 and the bolt enlarged hole 41 at the time of designing, and the gap on one side between the mounting bolt 42 and the bolt hole 33 is designed. A, the clearance on one side of the mounting bolt 42 and the bolt expansion hole 41 is set to b, and the clearance between the outer cylinder cylindrical portion 31 and the outer cylinder coupling portion 40 is set to h. As shown in FIG. 3B, when the mounting bolt 42 and the outer cylinder coupling portion 40 are shifted to the upper side in the figure with respect to the pin outer cylinder 30, the outer cylinder cylindrical portion 31 and the outer cylinder coupling portion. The gap with 40 can be set to h + a + b. That is, from the positional relationship between the outer cylinder flange 32 and the outer cylinder coupling portion 40 assumed at the time of design, the outer cylinder coupling portion 40 is a + b in the radial direction of the outer cylinder coupling portion 40 with respect to the outer cylinder flange 32. Position adjustment can be performed.

  Next, the adjustment function of the pin apparatus 1 when the outer cylinder coupling part 40 has shifted | deviated to the axial direction (left-right direction in the figure) with respect to the outer cylinder flange 32 is demonstrated. In this case, the position of the outer cylinder flange 32 is adjusted by sandwiching an adjustment washer 35 having a predetermined thickness between the shaft pin 20 and the PTFE pad 43. For example, as shown in FIG. 3B, when the outer cylinder coupling portion 40 is positioned on the right side in the figure, the outer cylinder flange 32 is made to have the thickness of the adjustment washer 35 by inserting the adjustment washer 35 into the position shown in FIG. ) And can be shifted to the right in the figure. Thereby, the outer cylinder flange 32 and the outer cylinder coupling part 40 can be connected by the attachment bolt 42. As shown in FIG. 3 (b), the design state is such that the adjustment washer 35 is removed or is thin by inserting the adjustment washer 35 and shifting the outer cylinder flange 32 to the right in advance. By exchanging, the adjustment allowance of the outer cylinder flange 32 can be set also in the left direction in the figure.

  Next, the attachment method of the pin apparatus 1 which concerns on embodiment of this invention is demonstrated. FIG. 4 is a perspective view showing a state in which the mounting plate 10 having the shaft pin 20 is attached to the column beam joint of the existing building. The mounting plate 10 provided with the shaft pin 20 is attached to the column beam joint portion of the existing building via the non-shrink mortar 4 formed in the gap between the column member 2 and the beam member 3. On both sides of the column member 2, PC steel bars 5 are inserted through which the beam member 3, the non-shrink mortar 4 and the mounting plate 10 are inserted. Then, the nut of the PC steel bar 5 is tightened and a predetermined axial force is introduced, whereby the mounting plate 10 is fixed to the beam-column joint. Further, the temporary support member 6 is attached to the column member 2 so as to be in contact with the lower ends of the attachment plate 10 and the non-shrink mortar 4. Furthermore, four adjustment bolts 12 are attached to the attachment plate 10 by screwing into four screw holes (not shown) formed in the attachment plate. Hereinafter, a method of attaching the pin device will be described in detail with reference to FIG.

Each drawing in FIG. 5 is a cross-sectional view taken along the line V-V in FIG. 4 and is shown according to the attachment procedure of the attachment plate 10.
As shown in FIG. 5 (a), a PC steel rod insertion hole 13 that penetrates the beam member 3 is drilled in the beam member 3 at a position that avoids interference with the reinforcing bars arranged inside the beam member 3. Next, the PC steel bar 5 having a nut attached to one end is inserted. Subsequently, the grout material 8 is injected into the gap between the PC steel bar 5 and the PC steel bar insertion hole 13, and the PC steel bar 5 is fixed to the beam member 3. An unbonded PC steel bar is used as the PC steel bar 5, and the adhesion between the PC steel bar 5 and the grout material 8 is cut off.

  Next, as shown in FIG. 5 (b), the temporary support member mounting anchor 7 is driven into the column member 2, and the temporary support member 6 is mounted horizontally on the column member 2. Subsequently, a height adjustment plate 9 is placed on the upper surface of the temporary support member 6 as necessary. The thickness of the adjustment plate 9 is determined such that the adjustment plate 9 is positioned at a predetermined height when the mounting plate 10 is placed on the upper surface of the temporary support member 6 or the upper surface of the adjustment plate 9. Yes.

  Next, as shown in FIG. 5 (c), the PC steel bar is inserted into the PC steel bar through hole (not shown) of the mounting plate 10 while the mounting plate 10 is placed on the upper surface of the height adjustment plate 9. 5 is inserted. Subsequently, the nut of the PC steel bar 5 is temporarily tightened to fix the mounting plate 10 to the column member 2. At this time, a desired separation distance L can be set between the mounting plate 10 and the surface of the column member 2 by adjusting the length of the adjustment bolt 12 protruding from the mounting plate 10. The separation distance L is preferably about 50 mm or more in order to reliably fill the non-shrink mortar 4 described later. Further, when the separation distance L is large, it is preferable to arrange reinforcing bars in the filling space of the non-shrink mortar 4 for the purpose of preventing the non-shrink mortar 4 from peeling off. Moreover, the position of the hole 11 (FIG. 1) for PC steel bars formed in the attachment plate 10 is a position reflecting the measurement result after measuring the arrangement of the PC steel bars 5 actually constructed on site. It is desirable.

  Next, as shown in FIG. 5 (d), a mold (not shown) is arranged on the side surface of the mounting plate 10, and the formed space is filled with the non-shrink mortar 4. Then, after the non-shrinkable mortar 4 is solidified, the nut of the PC steel bar 5 is finally tightened, so that the mounting plate 10 and the column beam joint of the existing building are integrated. After the attachment plate 10 is attached to the beam-column joint in this manner, each pin device member is attached to the shaft pin 20 as described above.

  As described above, when the pin apparatus 1 according to the embodiment of the present invention is used, the bolt expansion hole 41 is formed in the outer tube coupling portion 40 and the adjustment washer 35 can be attached to and detached from the shaft pin 30. The pin outer cylinder 30 and the outer cylinder coupling portion 40 can be easily connected by adjusting the positional relationship between the axial pin 30 in the radial direction and the axial direction. This is particularly effective when on-site measurement is difficult, such as when attaching the pin device 1 to an existing structure.

  As described above, the difference between the outer diameter of the shaft pin 20 and the inner diameter of the pin outer cylinder 30 is set to be as small as possible, the O-ring 21 is attached to the shaft pin 20, and the end surface of the outer cylinder cylindrical portion 31 By attaching the PTFE pads 43, 44 to the contact surface of the pin device 1, it is possible to prevent water and dust from entering. Therefore, the pin apparatus 1 can be used for many years without preventing the contact surface from corroding and degrading the function of the pin apparatus 1.

  In addition, the pin outer cylinder 30 can be easily fitted to the shaft pin 20 by forming a notch 22 having a predetermined inclination at the corner portion where the intermediate diameter portion 25 and the small diameter portion 26 of the pin outer cylinder 20 are dropped. Can be made.

  In addition, although the shaft pin mentioned above demonstrated that it was a hollow cylindrical thing, when the load load to a shaft pin is large, such as the stress which acts on a pin apparatus is high, it can also be set as a solid steel material. .

  Moreover, when the mounting method of the pin device according to the embodiment of the present invention is used, the temporary receiving material 6 is used as a temporary receiving place of the pin device 1 by installing the temporary receiving material 6 below the pin device 1. It is not necessary to hold the pin device 1 when the pin device 1 is attached. Thereby, the attachment method of the pin apparatus 1 excellent in workability is realizable.

  In addition, by mounting the height adjustment plate 9 having an appropriate thickness on the upper surface of the temporary support member 6, the mounting position of the pin device 1 in the height direction can be finely adjusted. Furthermore, by adjusting the protruding length of the adjusting bolt 12 arranged on the mounting plate 10 from the mounting plate 10, the axial mounting position of the pin device 1 can be finely adjusted. Thereby, it becomes possible to attach the pin apparatus 1 to a desired position accurately.

The disassembled perspective view of the pin apparatus which concerns on embodiment of this invention. Sectional drawing after the pin apparatus assembly shown by the arrow II-II in FIG. It is sectional drawing which showed the positional relationship of a pin outer cylinder and an outer cylinder coupling part, (a) is the positional relationship of a pin outer cylinder and an outer cylinder coupling part at the time of design, (b) is a pin outer cylinder and an outer side. An example of the positional relationship with a cylinder coupling part. The perspective view which showed the state in which the attachment plate provided with the shaft pin was attached to the column beam junction part of the existing building. The construction sequence diagram which showed the attachment procedure of the attachment plate in Fig.5 (a)-FIG.5 (d).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pin apparatus 2 Column member 3 Beam member 4 Non-shrink mortar 5 PC steel bar 6 Temporary receiving material 9 Height adjustment plate 10 Mounting plate 12 Adjustment bolt 20 Shaft pin 21 O-ring 22 Chamfer 30 Pin outer cylinder 35 Adjustment washer 40 Outside Tube coupling part 41 Bolt expansion hole

Claims (8)

A base plate attached to a structure, an axis pin fixed to one surface of the base plate and having an axis set in the normal direction of the base plate, and an outer cylinder that is fitted around the axis pin and rotates around the axis pin A pin device comprising: an outer cylinder coupling portion connected to the outer cylinder and rotating around the shaft pin in synchronization with the outer cylinder; and a stopper for suppressing movement of the outer cylinder in the axial direction. And
The shaft pin has a cylindrical body shape whose outer diameter is reduced in multiple steps from the base plate side toward the tip,
The outer cylinder is formed of a cylindrical body having an inner diameter that can be fitted onto a middle diameter portion of the cylindrical body of the shaft pin, in which a circumferential flange in which a first bolt hole is disposed is formed,
An axial direction adjusting member is interposed between the shaft pin and the outer cylinder, and a second bolt hole disposed in the outer cylinder coupling portion is aligned with the first bolt hole position. A pin device, wherein a bolt is fastened to adjust the position in the axial direction and the radial direction between the outer cylinder and the shaft pin.   2. The pin device according to claim 1, wherein the second bolt hole is an enlarged bolt hole, and has a clearance that can be adjusted with respect to the first bolt hole when the bolt is fastened.   3. The pin device according to claim 1, wherein the axial direction adjusting material is a polytetrafluoroethylene sliding plate interposed between the shaft pins at both ends of the outer cylinder. 4.   The intermediate diameter part into which the outer cylinder is fitted has a plurality of rubber rings housed in a groove-shaped part formed on the outer peripheral surface, and the outer peripheral surface of the intermediate diameter part, the inner peripheral surface of the outer cylinder, and the rubber The pin apparatus according to any one of claims 1 to 3, wherein a lubricant is sealed in a sealed space defined by a ring.   The clearance between the inner diameter of the cylindrical body of the outer cylinder and the outer diameter of the middle diameter portion of the columnar body with which the outer cylinder is fitted is 0.6 mm or less. The pin apparatus as described in any one of.   The pin apparatus according to any one of claims 1 to 5, wherein a tip end portion of the cylindrical body of the shaft pin with which the outer cylinder is fitted is chamfered at a predetermined angle.   The pin device according to any one of claims 1 to 6, wherein the stopper is configured by a double nut. A method of attaching the pin device according to claim 1 to a structure,
A fixing bar is fixed to a part of the structure so that one end protrudes to the pin device side,
On the temporary support member attached to the structure surface, the base plate of the pin device, on which a bolt for adjusting the separation from the structure is screwed, is placed with a height adjusted to a predetermined attachment position, and placed.
The protruding length of the separation adjusting bolt is such that the shaft pin fixed to the base plate is disposed at a predetermined position with the fixing rod inserted through the fixing rod insertion hole formed in the base plate. To adjust the separation between the base plate and the structure,
After the positioning of the pin device and the structure is completed, a solidifying material is filled between the base plate and the structure, and the pin device is attached to the structure. Mounting method.

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