JP4838066B2 - Support system for seismic isolation building piping - Google Patents

Description

  The present invention relates to a support system for a base-isolated building pipe that is piped from the ground into a base-isolated building and can absorb the displacement of seismic vibrations caused by an earthquake or the like. It is related with the support system of the piping for seismic isolation buildings which has at least one bending part which is fixed to the middle and is bent in the substantially L shape in the middle.

  Conventionally, as this kind of seismic isolation building piping support system, for example, the applicant of the present application previously proposed and described in Patent Document 1 (Japanese Patent Laid-Open No. 2006-77933).

  As shown in FIG. 9, this seismic isolation building pipe H has at least one bent portion 3 that is fixed to the ground on one end 1 side and fixed to the building on the other end 2 side, and bent in a substantially L shape in the middle. The ball joint is connected to at least three places in the vicinity of at least one bent portion 3 of the pipe P, one end side of the pipe P near the ground, and the other end side of the pipe and near the building. B is arranged. Then, the support system Sa for the seismic isolation building pipe H supports the at least one bent portion 3 fixed to the ground and having the ball joint B interposed in the vicinity thereof while allowing vertical and horizontal movements. One support device 4 and a second support device 6 that supports the straight portion 5 of the pipe that is fixed to the ground and reaches the bent portion 3 while allowing movement in the vertical and horizontal directions are supported. .

The first support device 4 includes a fixing member 7 fixed to the ground, a support member 8 that supports the bent portion 3, and a plurality of links 9 that are interposed between the fixing member 7 and the support member 8. It is prepared for. The first support device 4 prevents the bent portion 3 from falling even when the ball joint B rotates.
The second support device 6 is configured to have a function of supporting the linear portion 5 so as to be rotatable around the axis of the linear portion 5.

  According to the support system Sa for the seismic isolation building pipe H, the bent portion 3 and the straight portion 5 can be supported with respect to the ground, and the bent portion 3 and the straight portion 5 even when the ball joint B rotates. Can be prevented from falling.

JP 2006-77933 A

  By the way, in such a support system Sa of the piping H for seismic isolation building, the 1st support apparatus 4 which supports the bending part 3 is provided, and the 1st support member 4 is fixed to the ground. Therefore, there is a problem that the installation space may be narrowed by that amount, which may make installation work difficult. Therefore, for example, when a plurality of pipes P are provided in parallel, the movements of the bent portions 3 of the adjacent pipes P are different from each other, so that these pipes P are supported so as to support the bent portions 3 of the respective pipes P. The first support device 4 is required every time, but even if the first support devices 4 interfere with each other and cannot be installed or installed, the construction space is further reduced. I will.

  The present invention has been made in view of the above-mentioned problems, and eliminates the need for a device that directly supports the bent portion on the ground without impairing the function of preventing the bent portion and the straight portion from falling. An object is to provide a support system for piping for a base-isolated building that allows a large space.

  In order to achieve such an object, the seismic isolation building piping support system of the present invention is drawn into the building from the ground, one end is fixed to the ground, the other end is fixed to the building, and substantially L-shaped in the middle. A pipe having at least one bent portion that is bent into a shape, and in the vicinity of at least one bent portion of the pipe, on one end side of the pipe, in the vicinity of the ground, and on the other end side of the pipe. There are ball joints in at least three places near the building, and the vertical and horizontal movement of at least one of the two straight parts of the pipe that is fixed to the ground and reaches the bent part is performed. In a support system for a seismic isolation building pipe that is provided with a support device that allows and supports, a rotation limiting mechanism that limits rotation of a ball joint provided in the vicinity of the bent portion to rotation only in a horizontal plane direction. Provided above and supported by the support device It is provided with a rotation regulating mechanism for regulating the rotation around the axis.

In this pipe, three ball joints are interposed in the pipe, and the ball joint is rotated by its own weight, and the bent part and the straight part are about to fall.
In this case, since the rotation of the ball joint in the vicinity of the bent portion is restricted so as to rotate relatively only in the horizontal plane direction, the bent portion can be prevented from falling. Thereby, compared with the conventional one, the pipe can be prevented from being depressed without providing a device for supporting the bent portion with respect to the ground. Moreover, a device for directly supporting the bent portion on the ground becomes unnecessary, and the construction space can be increased. Therefore, installation work of a support system and piping can be performed easily.
Moreover, the weight of the straight tube is received by the support device.

Next, for example, due to vibration such as an earthquake, one end and the other end of the tube move and displace relative to each other, so that the linear portion moves in the horizontal direction and the vertical direction or rotates around the vertical axis. . In the support device, these movements are allowed to support the tube.
Also, if you try to rotate around the axis of the linear part, the rotation of the linear part supported by this support device is restricted by the rotation restricting mechanism, and the ball joint in the vicinity of the bent part does not rotate around the axis. It is possible to prevent a situation in which the rotation direction of the ball joint, which is not limited by the mechanism, is directed in a direction other than the horizontal direction. For this reason, the bent portion can be prevented from being depressed. Further, the structure of the rotation limiting mechanism can be simplified.

Further, if necessary, the ball joint is configured to include one side portion and the other side portion that is pivotably connected to the one side portion via the ball portion, and the rotation limiting mechanism is configured as described above. One side link extending from one side, the other side link extending from the other side and having the tip overlapped with the tip of the one side link, and an axis perpendicular to the horizontal plane between the one side link and the tip of the other side link And a shaft body connected so as to be rotatable around the center.
Thereby, since the one side link and the other side link are pivotally supported by the shaft body, the rotation of the one side portion and the other side portion is relatively limited only in the horizontal plane direction. Therefore, the direction of rotation of one side and the other side can be limited with a simple structure.

Furthermore, a pair of the one side link, the other side link and the shaft body is provided on the upper and lower sides of the ball joint as necessary.
Thereby, since the pair of the one side link, the other side link, and the shaft body is provided in a vertical direction, the restriction of the rotation of the ball joint is further ensured.

In addition, if necessary, the rotation limiting mechanism is provided with an engaging portion provided on the tube side and a movement of the tube linear portion provided on the support device in the axial direction to restrict rotation around the axis. In this way, it is configured to include an engaged portion that engages with the engaging portion.
In this case, since the movement of the pipe in the axial direction is allowed, even if vibration occurs due to an earthquake or the like, the movement of the pipe in the axial direction is not hindered, so that the pipe can be reliably prevented from being damaged.

Further, if necessary, the engaging portion is constituted by two rails provided along the axis of the straight portion of the tube, and the engaged portion is constituted by a roller interposed between the rails. ing.
In this case, when the straight part of the tube tries to rotate around the axis of the tube, the roller stops against the two rails and its rotation is restricted. In addition, when the straight portion of the tube is going to move along the axis of the straight portion of the tube, the roller is rotated to allow this movement. Thereby, the rotation around the axis of the straight portion of the tube can be restricted while allowing the tube to move in the axial direction.

Furthermore, it is set as the structure which provided multiple sets of the said engaging part and the said to-be-engaged part as needed.
Since there are a plurality of sets of the engaging portion and the engaged portion, the rotation around the axis of the straight portion of the tube can be reliably controlled.

According to the seismic isolation building piping support system of the present invention, since the rotation limiting mechanism for limiting the rotation of the ball joint provided in the vicinity of the bent portion to only the rotation in the horizontal plane direction is provided, the bent portion The rotation is relatively limited only in the horizontal plane direction, and the bent portion can be prevented from falling. Thereby, compared with the conventional one, the pipe can be prevented from being depressed without providing a device for supporting the bent portion with respect to the ground. Moreover, a device for directly supporting the bent portion on the ground becomes unnecessary, and the construction space can be increased. Therefore, installation work of a support system and piping can be performed easily.
Further, since the rotation restricting mechanism for restricting the rotation around the axis of the tube supported by the support device is provided, even if the straight portion of the tube tries to rotate around the axis of the straight portion due to vibration, this is restricted. Therefore, the ball joint in the vicinity of the bent portion also does not rotate around the axis, so that it is possible to prevent the rotation direction of the ball joint that is not limited by the rotation limiting mechanism from being directed in a direction other than the horizontal direction. Can be made not to be depressed.

  Hereinafter, based on an accompanying drawing, the support system of piping for base-isolated buildings concerning an embodiment of the invention is explained in detail. In addition, the same code | symbol is attached | subjected to the thing similar to the said conventional thing.

  In FIG. 1, the seismic isolation building piping H is shown. This pipe H includes a pipe P having one end 1 fixed to the ground, the other end 2 fixed to the building, and having at least one bent portion 3 that is bent in a substantially L shape in the middle. The ball joint B is interposed in at least three places in the vicinity of the at least one bent portion 3, one end 1 side of the pipe P and near the ground, and the other end 2 side of the pipe P and near the building. Yes. The seismic isolation building pipe H support system S allows vertical and horizontal movement of at least one of the two straight portions 5 of the pipe P that is fixed to the ground and reaches the bent portion 3. And a supporting device 50 for supporting the structure. In the embodiment, the seismic isolation building pipe H is provided in the seismic isolation pit M between the ground and the bottom of the building, and two pipes P are provided in parallel at a predetermined interval.

As shown in FIGS. 1 to 4, the support system S for the seismic isolation building pipe H restricts the rotation of the ball joint B provided in the vicinity of the bent portion 3 to the rotation only in the horizontal plane direction. A rotation limiting mechanism 20 is provided. Specifically, the ball joint B in the vicinity of the bent portion 3 whose rotation is restricted by the rotation restriction mechanism 20 is pivotally connected to the one side portion 10 and the one side portion 10 via the ball portion 12. The other side portion 11 is provided. The ball portion 12 is provided integrally with the other side portion 11. The ball portion 12 is provided integrally with the one side portion 10 and is rotatably held by a sliding portion 13 on which the outer periphery of the ball portion 12 can slide.
The rotation limiting mechanism 20 includes a one-side link 21 extending from the one-side portion 10, a second-side link 22 extending from the other-side portion 11 and having a tip end portion 25 a overlapping the tip-end portion 25 a of the one-side link 21, and one-side link. 21 and a shaft body 23 that connects the distal end portions 25a of the other side link 22 so as to be rotatable around an axis orthogonal to the horizontal plane. Furthermore, a pair of the one side link 21, the other side link 22 and the shaft body 23 is provided in a vertical direction.

  The one side link 21 and the other side link 22 are formed by welding and joining two metal plates 24 and 25 in an L shape. The one side link 21 and the other side link 22 are joined together by fastening the base plate 24 together with the flange 14 of the ball joint B and the flange 15 of the pipe P with bolts and nuts. In the embodiment, the flange 14 of the pipe P is sandwiched between the flange 14 of the ball joint B and the base plate 24 and the flanges 14 and 15 and the plate 24 are fastened together with bolts and nuts. ing. Moreover, the shaft body 23 is comprised with the volt | bolt, and is prevented from coming off with a double nut.

  In addition, as shown in FIGS. 1 and 5 to 8, the fluid passing through the pipe P is cooled or kept warm in the two straight portions 5 reaching the bent portion 3 provided with the ball joint B in the vicinity thereof. A metal cover 30 is attached. The cover 30 includes a cylindrical cover main body 31 provided coaxially with the pipe P, and an attachment fitting 32 for attaching the cover main body 31 to the pipe P. The mounting bracket 32 is provided at both ends of the cover main body 31, and includes an erection member 34 that is erected in the opening 33 at both ends of the cover main body 31 and a U-shaped bolt 38 that holds the pipe P. The erection member 34 is formed of L-shaped steel made up of one piece 35 and the other piece 37. One end 35 of the L-shaped steel is joined to a pair of projecting pieces 36 projecting outward at the ends of the cover body 31 by bolts and nuts (36a). It is attached. In addition, the erection member 34 is designed to be attached to the cover body 31 so that the other piece 37 of L-shaped steel comes into contact with the outer periphery of the pipe P. The U-shaped bolt 38 is attached to the pipe P by inserting a male screw 38a through a hole (not shown) provided in the other piece 37 so as to surround the pipe P and tightening a nut 39 on the male screw 38a. Glass wool and urethane are provided inside the cover main body 31. Furthermore, the axis X1 of the straight portion 5 on the one end 1 side of the pipe P and the axis X2 of the straight portion 5 on the other end 2 side are both horizontal and orthogonal to each other when not vibrating. .

  Furthermore, as shown in FIGS. 1, 5, and 8, the support system S for the seismic isolation building pipe H is at least one of the two straight portions 5 of the pipe P that is fixed to the ground and reaches the bent portion 3. The linear portion 5 is provided with a support device 50 that supports the movement in the vertical direction and the horizontal direction. In order to support both the two straight portions 5 that reach the bent portion 3 of the pipe P in which the ball joint B is interposed in the vicinity, the support device 50 is provided between each straight portion 5 and the ground. Is provided.

The support device 50 includes a rail support mechanism 51 and a vertical movement mechanism 80. The support device 50 is configured to have a function of supporting the linear portion 5 so as to be rotatable about a vertical axis.
The rail support mechanism 51 includes a support body 52 that supports the linear portion 5 while allowing the linear portion 5 to move in the directions of the axes X1 and X2, and the support body 52 in the horizontal plane direction and at least the axis X1 of the linear portion 5. , X2 direction and a rail body 70 that is movably supported in one direction different from the X2 direction.

The support body 52 includes a ring member 53 that surrounds the straight portion 5, and a plurality of rollers 57 a, 57 b, and 57 c that are provided on the ring member 53 and come into contact with the outer peripheral surface of the cover 30 of the straight portion 5. . The support body 52 is supported by a carriage 71 having wheels that roll on the rail body 70.
The ring member 53 includes a rectangular plate-shaped lower frame 54 provided on the carriage 71 side, a pair of horizontal frames 55 erected on the upper side of the lower frame 54, and an upper frame 56 installed on the pair of horizontal frames 55. It is configured with. The horizontal frame 55 is formed of a metal plate, and is provided with a reinforcing plate 55a for reinforcement. The upper frame 56 includes a divided body 56a that is divided into two on one horizontal frame 55 side and the other horizontal frame 55 side. The divided body 56a is formed by bending a metal plate, and is provided with a reinforcing plate 56b for reinforcement. A roller 57a is interposed between the divided bodies 56a. A metal plate 58 is provided at one end in the longitudinal direction of the divided body 56a. Then, a bolt 59 that pivotally supports the roller 57a is inserted into the plate 58 at one end of the divided body 56a, and the nuts 59a are tightened to join the divided bodies 56a together.
A roller 57b is also interposed between the horizontal frame 55 and the divided body 56a. A metal plate 60 is welded to the upper end of the horizontal frame 55 and the other end of the divided body 56a. A bolt 61 for pivotally supporting the roller 57b is inserted into the plate 60, and a nut 61a is fastened to connect the horizontal frame 55 and the upper frame 56 to each other.

  The rollers 57a, 57b, 57c are constituted by ball bearings. Further, as described above, the rollers 57a and 57b are provided between the divided bodies 56a of the horizontal frame 55 and the upper frame 56 and between the divided bodies 56a. Further, the roller 57 c is provided inside the angle formed by the lower frame 54 and the horizontal frame 55. The roller 57 c supports the outer periphery of the cover main body 31 obliquely from below, and is held by the lower frame 54 by the roller holding portion 62. The roller holding portion 62 includes a metal plate 64 supported by a roller 57c with bolts and nuts (63), and a support plate 65 that supports the plate 64 with respect to the lower frame 54 in an inclined state. And comprising.

  The carriage 71 includes an upper wheel 72 that rolls on the surface side of a guide rail 76 that will be described later, and a lower wheel 73 that rolls on the back side of the guide rail 76 that will be described later. The rail body 70 includes a guide rail 76 that guides the upper wheel 72 and the lower wheel 73 of the carriage 71. The guide rail 76 is composed of a top plate of a rail body 70 formed in a trapezoidal shape. A rectangular hole 77 into which the carriage 71 itself is loosely inserted is provided at the center of the guide rail 76. In the embodiment, the guide rail 76 of the rail body 70 includes a thin plate-like side rail 79 on the upper surface, and guides the side surface of the upper wheel 72 of the carriage 71. Furthermore, the carriage 70 of the support body 52 of both the two pipes P is shared and travels on the rail body 70.

As shown in FIG. 7, the vertical movement mechanism 80 includes a rod 81 that is suspended from the lower frame 54 of the ring member 53 and is provided on the carriage 71 so as to be movable forward and backward.
The rod 81 is inserted into a linear bush 82 provided on the carriage 71. The rod 81 is suspended from the ring member 53 via a base 83 having a diameter larger than that of the linear bush 82. The pedestal 83 is in contact with the upper opening edge of the linear bush 82 when not vibrating. The height position of the ring member 52 when the pedestal 83 abuts is set so that both the axes X1 and X2 of the linear portion 5 supported by the support device 50 are parallel to the same horizontal plane. In addition, the lower end of the rod 81 is provided with a flange portion 84 that comes into contact with the lower opening edge of the linear bush 82 when the rod 81 advances. The collar portion 84 positions the maximum advance position of the rod 81.

The tube P supported by the support 52 is provided with a rotation restricting mechanism 90 that restricts the rotation of the tube P around the axes X1 and X2. The rotation restricting mechanism 90 is provided on the tube P side and allows the movement of the tube P in the directions of the axes X1 and X2 provided on the support device 50 and restricts the rotation around the axes X1 and X2. An engaged portion 92 that engages with the engaging portion 91 is provided. A plurality of sets of the engaging portion 91 and the engaged portion 92 are provided.
The engaging portion 91 is composed of two rails 93 provided along the axes X1 and X2 of the pipe P. The engaging portion 91 protrudes from the outer periphery of the cover 30. The engaged portion 92 is constituted by a roller 57b interposed between the horizontal frame 55 and the divided body 56a among the rollers 57a, 57b, and 57c. The roller 57 b is interposed between the two rails 93. The rail 93 is provided on the outer periphery of the cover 30 along the axes X1 and X2 of the cover 30. Further, a clearance is provided between the rail 93 and the roller 58b.

  Accordingly, as shown in FIGS. 1 to 3, when the pipe H is supported by the support system S for the seismic isolation building pipe H according to the embodiment of the present invention, the ball joint B near the bent portion 3 is attached to the ball joint B. A rotation limiting mechanism 20 is provided, a support device 50 is provided, and the support device 50 supports the straight portion 5 of the pipe P.

In this pipe P, three ball joints B are interposed in the pipe P, the ball joint B rotates by its own weight, and the bent part 3 and the straight part 5 are about to fall.
In this case, the ball joint B in the vicinity of the bent portion 3 pivotally supports the one side link 21 and the other side link 22 with the shaft body 23, and relatively moves the one side link 21 and the other side link 22 in the horizontal plane direction. By restricting the rotation only to one side, the one side portion 10 and the other side portion 11 are relatively limited to the rotation only in the horizontal plane direction, so that the bent portion 3 does not fall. it can. Thereby, compared with the conventional one, the pipe P can be prevented from being depressed without providing a device for supporting the bent portion 3 with respect to the ground. Therefore, the construction space can be increased, and these installation operations can be easily performed when the support system and the piping are installed.
Further, the rotation limiting mechanism 20 includes the one side link 21, the other side link 22, and the shaft body 23. Since the rotation limiting mechanism 20 has a relatively simple structure, the manufacturing cost can be reduced.
Furthermore, since the pair of the one side link 21, the other side link 22 and the shaft body 23 is provided vertically, the restriction of the rotation of the ball joint B is further ensured.

  Further, the pipe P of the straight portion 5 receives its own weight by the support device 50. Specifically, in the support device 50, the ring member 53 is in a state in which the pedestal 83 of the rod 81 is in contact with the upper end opening edge of the linear bush 82. Therefore, the height of the ring member 53 that holds the straight portion 5 becomes a predetermined height, and the axes X1 and X2 of the straight portion 5 are substantially straight. Thereby, the linear part 5 is fixed and supported with respect to the ground by the support device 50, and the load on the rotation restriction mechanism 20 of the ball joint B in the vicinity of the bent part 3 can be reduced.

Next, for example, when the one end 1 and the other end 2 of the pipe P are relatively moved and displaced by vibration such as an earthquake, the straight portion 5 tries to rotate around the axes X1 and X2 of the straight portion 5. The straight line portion 5 moves in the horizontal direction and the vertical direction, or rotates around the vertical axes X1 and X2.
When the rotation about the axes X1 and X2 of the linear portion 5 is attempted, in the support device 50, the roller 57b stops against the two rails 93 and the rotation is restricted. As a result, the rotation of the linear portion 5 supported by the support device 50 is restricted by the rotation restricting mechanism 90, and the ball joint B in the vicinity of the bent portion 3 also does not rotate around the axes X1 and X2. Therefore, it is possible to prevent a situation in which the rotation direction of the ball joint B whose rotation is not limited by 20 is directed in a direction other than the horizontal direction. Therefore, the bent portion 3 can be prevented from being depressed. In addition, since the direction in which the ball joint B is not restricted by the rotation restriction mechanism 20 does not have to be variable, the structure of the rotation restriction mechanism 20 can be simplified.

  At this time, when the straight portion 5 tries to move in the horizontal direction, in the rail support mechanism 51 of the support device 50, the rollers 57 a, 57 b, 57 c provided on the ring member 53 come into contact with the outer peripheral surface of the straight portion 5. Therefore, the support 52 moves in the directions of the axes X1 and X2 of the linear portion 5 relative to the linear portion 5 while supporting the linear portion 5. . Further, since the wheels 72 and 73 are guided by the guide rail 76 and the carriage 71 moves in this state, the support body 52 moves in the horizontal direction while supporting the linear portion 5. Therefore, the support body 52 can support the linear part 5 following the movement of the linear part 5 in the horizontal direction, and can be reliably supported with respect to the ground. Therefore, the situation where the pipe H is damaged can be prevented.

  Further, at this time, if the straight portion 5 moves in the horizontal direction and the straight portion 5 tries to rotate around the vertical axis, the rod 81 rotates relative to the linear bush 82 and rotates around the axis of the rod 81. Therefore, the ring member 53 of the support body 52 supports the linear portion 5 following the rotation of the linear portion 5 around the vertical axis. Therefore, even if the straight part 5 rotates about the vertical axis, it can be reliably supported with respect to the ground, and the situation where the pipe P is damaged can be prevented.

Furthermore, at this time, if the linear portion 5 tries to move in the vertical direction, in the vertical movement mechanism 80 of the support device 50, the rod 81 can move back and forth, so that the support body 52 follows the movement in the vertical direction. The straight part 5 is supported. Therefore, even if the linear portion 5 moves in the vertical direction, the vertical moving mechanism 80 can reliably support the linear portion 5 with respect to the ground without leaving the ground. Therefore, the situation where the pipe H is damaged can be prevented. Further, excessive movement in the vertical direction is prevented by the collar portion 84 striking the lower end opening of the linear bush 82.
At this time, the carriage 71 sandwiches the guide rail 76 between the upper wheel 72 and the lower wheel 73 so as not to float from the rail body 70, so that the linear portion 5 is reliably supported with respect to the ground. be able to.

In addition, although the support system S was applied to the one with the number of the bending parts 3, it is applicable also to the pipe P with two or more bending parts 3, and when there are two or more, the bending part 3 And according to the number of the linear parts 5, while providing the rotation limitation mechanism 20 in the ball joint B near the bending part 3, the support apparatus 50 should just be attached to the linear part 5. FIG.
Furthermore, the seismic isolation building pipe H is configured so that the axes X1 and X2 of the two straight portions 5 where the pipe P reaches the bent portion 3 are horizontal, but is not limited thereto. Either one of the two straight portions 5 may be provided so that the axes X1 and X2 are vertical. In this case, only the other straight portion 5 is supported by the support device 50 with respect to the ground. Thus, it may be changed as appropriate depending on the configuration of the pipe P.

It is a figure which shows the support system of piping for base-isolated buildings which concerns on embodiment of this invention. It is a front view which shows the ball joint of the vicinity of the bending part interposed by the pipe | tube of the piping in the support system of the piping for base isolation buildings which concerns on embodiment of this invention. It is a top view which shows the ball joint of the vicinity of the bending part interposed by the pipe of the piping in the support system of the piping for base isolation buildings which concerns on embodiment of this invention. It is a side view which shows the ball joint of the vicinity of the bending part interposed by the pipe of piping in the support system of the piping for base isolation buildings which concerns on embodiment of this invention. It is a side view which shows the support apparatus of the support system of the piping system for base-isolated buildings which concerns on embodiment of this invention in the state which supported the pipe | tube. It is the AA line view in FIG. 5 which shows the support apparatus of the support system of the piping support system for seismic isolation buildings which concerns on embodiment of this invention in the state which supported the pipe | tube. It is the BB sectional drawing in FIG. 5 which shows the support apparatus of the support system of the piping support system for base-isolated buildings which concerns on embodiment of this invention in the state which supported the pipe | tube. It is a top view which shows the support apparatus of the support system of the piping for base-isolated buildings which concerns on embodiment of this invention in the state which supported the pipe | tube. It is a figure which shows an example of the support system of the piping for conventional seismic isolation buildings.

Explanation of symbols

H piping for seismic isolation building S support system P pipe B ball joint 1 one end 2 other end 3 bent portion 5 straight portion X1, X2 straight portion shaft 10 one side portion 11 other side portion 12 ball portion 13 sliding portion 20 times Movement limit mechanism 21 One side link 22 The other side link 23 Shaft body 24, 25 Plate body 25a Tip part 30 Cover 31 Cover main body 32 Mounting bracket 33 Both ends opening 34 Construction member 35 One piece 36 Projection piece 37 The other piece 38 U-shaped bolt 50 support device 51 rail support mechanism 52 support 53 ring member 54 lower frame 55 horizontal frame 56 upper frame 56a divided bodies 57a, 57b, 57c roller 71 carriage 72 upper wheel 73 lower wheel 76 guide rail 80 vertical movement mechanism 81 rod 82 linear Bush 83 Pedestal 84 Gutter 90 Rotation restriction mechanism 91 Engagement part 92 Engagement part 93 Rail

Claims (6)

The pipe is drawn into the building from the ground, one end is fixed to the ground, the other end is fixed to the building, and has a pipe having at least one bent portion that is bent in a substantially L shape in the middle. Near at least one bent portion, one end side of the pipe and near the ground, and the other end side of the pipe and at least three places near the building, with ball joints interposed between them and fixed to the ground In the system for supporting a seismic isolation building pipe comprising a support device that supports at least one of the two straight portions of the pipe leading to the bent portion while allowing movement in the vertical and horizontal directions,
A rotation restricting mechanism for restricting rotation around the axis of the tube supported by the support device by providing a rotation restricting mechanism for restricting the rotation of the ball joint provided in the vicinity of the bent portion to only the rotation in the horizontal plane direction. A system for supporting piping for base-isolated buildings, characterized by the provision of   The ball joint is configured to include one side and the other side connected to the one side via the ball so as to be rotatable, and the rotation limiting mechanism extends from the one side. The side link, the other side link that extends from the other side part and the tip part of which overlaps the tip part of the one side link, and the one side link and the tip part of the other side link can be rotated around an axis perpendicular to the horizontal plane. The system for supporting a seismic isolation building pipe according to claim 1, further comprising a shaft body connected to the shaft.   3. The piping support system for a seismic isolation building according to claim 2, wherein a pair of the one side link, the other side link, and the shaft body is provided above and below the ball joint.   The rotation restricting mechanism includes an engagement portion provided on the tube side and an engagement portion that is provided in the support device and allows the movement of the linear portion of the tube in the axial direction and restricts rotation around the shaft. 4. The support system for a seismic isolation building pipe according to claim 1, further comprising an engaged portion that engages with the portion.   The engagement portion is constituted by two rails provided along the axis of the straight portion of the tube, and the engaged portion is constituted by a roller interposed between the rails. Item 5. The support system for piping for base-isolated buildings according to Item 4. 6. The seismic isolation building piping support system according to claim 4 , wherein a plurality of sets of the engaging portion and the engaged portion are provided.

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