JP2015160301A - Flange outer circumferential surface alignment jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flange outer circumferential surface alignment jig that has a simple structure and can easily be made even in the construction field, has wide adaptability to be used for various piping caliber and flange configuration and facilitates operation in a narrow part, and to provide a flange outer circumferential surface alignment method using the same.SOLUTION: A flange outer circumferential surface alignment jig comprises: plates 2, 3 for sandwiching two flanges 12, 14 mounted to two pipes 11, 13, respectively; a protrusion 4 mounted to the plate 2, and inserted into a bolt hole of either one of two flanges; and two reaction force receiving members 5, 6 provided in parallel to the protrusion 4, fixed to the plates 2, 3, and provided at positions of the outside vicinity of the outer circumferential surfaces of the two flanges, for forming a nearly isosceles triangle with the protrusion 4 as a vertex when the protrusion 4 is inserted into any one bolt hole of the two flanges. A flange outer circumferential surface alignment method using the same is also provided.

Description

  The present invention relates to a jig for aligning the flange outer peripheral surface so that the flanges connecting the pipes face each other so that the flange outer peripheral surfaces are flush with each other.

  When disassembling equipment or the like in a plant facility for inspection and care, the pipe connected by the flange is removed, and after the completion of the work, the work is again performed by the flange. At that time, it is necessary to align the flanges so that the flanges face each other and their outer peripheral surfaces are flush with each other.

  However, the flanges do not easily face each other due to distortion of the welded part, and the positioning is often performed using a lever block (registered trademark) or a jack. This operation is often performed in a narrow portion with a relatively small pipe, but in such a case, there is a problem that workability is bad and dangerous, and a long work time is required.

  Patent Document 1 relates to an apparatus for aligning the flange outer peripheral surface, but has a complicated configuration in which two hydraulic mechanisms are combined with a structure manufactured in a factory according to the pipe diameter. . As described in the section “Technical field to which the invention belongs”, this is a device intended for alignment of the flange outer peripheral surface between specific large-diameter pipes.

  Flange outer peripheral surface position that is simple in structure and can be easily manufactured at construction sites, has wide adaptability that can be used for various pipe diameters and flange configurations, and is easy to operate even in narrow spaces There is no matching device or flange outer peripheral alignment method.

JP 2004-243498 A

None

  The problem to be solved is that the structure is simple and can be easily produced at the construction site, and has wide adaptability that can be used for various pipe diameters and flange configurations, even in narrow spaces. It is an object to provide a flange outer peripheral surface alignment jig that is easy to operate and a flange outer peripheral surface alignment method using the jig.

The present invention that solves the above-mentioned problem is a flange outer peripheral surface alignment jig that makes the flange outer peripheral surface flush with the flanges of two pipes to be connected facing each other,
Plate A and plate B sandwiching two flanges attached to each of the two pipes;
A columnar protrusion attached to the plate A and inserted into one bolt hole of either of the two flanges;
Two reaction force receiving members provided in parallel to the protrusions, each of which can be fixed to both the plate material A and the plate material B, and the protrusions of the two flanges When inserted into any one bolt hole, it is provided at a position near the outside of the outer peripheral surface of the two flanges and at a position forming an approximately isosceles triangle with the protrusion as the apex. Further, the flange outer peripheral surface alignment jig is composed of the two reaction force receiving members.

  To align the outer peripheral surface of the flange using this jig, first look at the degree of displacement of the outer peripheral surfaces of the two flanges to be connected, and which point of which flange is pressed, both flanges face each other and the outer peripheral surface Think about what will be the same. Of the bolt holes of the flange A on the opposite side of the flange B to be pressed, select one bolt hole closest to the location where the displacement of the outer peripheral surface of the flange is the largest, and insert the protrusion attached to the plate A there. While attaching the plate material A to the piping side of the flange A. Further, the plate material B is attached to the piping side of the flange B, and the two reaction force receiving materials are fixed by placing both the plate materials together with the plate material A so as to sandwich both flanges.

  In this state in which the protruding portion is inserted into the bolt hole of the flange A, the two reaction force receiving members provided in the jig are provided at positions near the outside of the outer peripheral surface of the flange. If a gold arrow is driven between the outer peripheral surface of any of the above and any one reaction force receiving material A to apply a force, the flange B can be moved closer to the flange A.

  Each of the two reaction force receiving materials is provided at a position near the outside of the outer peripheral surface of the flange in this state in which the protruding portion is inserted into the bolt hole of the flange A, and therefore, the reaction force receiving material A for driving a gold arrow. The reaction force receiving material B different from the above is also in the vicinity of the outside of the outer peripheral surface of the flange. Therefore, when the gold arrow is driven between the reaction force receiving member A and the outer peripheral surface of the flange B, the two plate members are centered on the protruding portion until the reaction force receiving member B comes into contact with the outer peripheral surface of the flange B and stops. Fixed to rotate slightly.

  In this state, the reaction force when the gold arrow is driven is transmitted from the reaction force receiving material A to the projecting portion via the plate material A, and the flange A is moved in a direction approaching the flange B. B can be directly opposed and their outer peripheral surfaces can be flush with each other.

  Further, since the two reaction force receiving members are provided at positions that form substantially isosceles triangles having the fixed axis as a vertex, if necessary, the outer peripheral surfaces of the reaction force receiving member A and the flange B, and The flange B can be moved relative to the flange A by driving a gold arrow into both the reaction force receiving member B and the outer peripheral surface of the flange B.

  Considering the above usage conditions, the protrusions should be thinner than the diameter of the bolt holes of the corresponding flanges as long as the strength allows, and the two reaction force receiving materials are in the vicinity of the outer periphery of the corresponding flanges. Therefore, if the flange outer peripheral surface alignment jig of the present invention is produced, the diameter of the corresponding pipe is slightly changed. Alternatively, even if the shape of the flange is slightly changed, it is possible to cope with this, and this jig has wide adaptability. In addition, since the protrusion part has comprised the column shape, it is easy to adapt to the inner surface of the bolt hole in which it is inserted.

  The flange outer peripheral surface alignment jig of the present invention is an extremely small jig and does not require a separate lever block (registered trademark) or jack, so it can be easily brought into a narrow part or installed in a narrow part. It is. Furthermore, since the subsequent operation is only to drive a gold arrow, the operation is familiar to many workers, and the operation can be performed safely and in a short time.

  Furthermore, this invention which solves the said subject is a flange outer peripheral surface alignment jig | tool of Claim 1, Comprising: The said 2 reaction force receiving material is a cylindrical part attached to the said board | plate material A, and this cylindrical part The flange outer peripheral surface alignment jig which consists of a stud bolt and a nut provided on the top of the flange and has a spacer function for adjusting the interval between the two plate members.

  The reaction force receiving material is fixed to the plate material A from the beginning by configuring the reaction force receiving material with a cylindrical portion attached to the plate material A and a stud bolt and a nut provided on the top of the cylindrical portion. Then, what is necessary is just to fix to the board | plate material B using the volt | bolt and nut after that. In addition, since the cylindrical portion corresponds to the portion into which the gold arrow is driven or the portion that stops the rotation of the plate material in contact with the flange B, it can cope with a stronger force than the entire bolt and is less likely to be deformed. The stud bolt is inserted into a bolt hole provided in the plate material B, and the two reaction force receiving materials can be easily fixed to the plate material B by tightening the nut.

  By providing the two reaction force receiving members with a spacer function for adjusting the interval between the two plate members, the interval between the two plate members in the reaction force receiving member portion is maintained substantially equal to the interval between the two plate members in the vicinity of the protruding portion. be able to. Since the two reaction force receiving materials are placed in a position that forms an isosceles triangle with the protruding portion as the apex, both plate materials can be kept firmly parallel at three points, and when the gold arrow is driven Even if an impact is given, the plate material does not fall down or come off the flange, so that the work can be performed stably.

  The flange outer peripheral surface alignment jig of the present invention can be easily assembled using a plate material, a cylindrical member, a stud bolt, a nut, or the like that can be easily obtained at a construction site. Therefore, it can be produced and used according to the situation at each site.

  Moreover, the present invention for solving the above-described problems is to make the flange surfaces of the two pipes face each other using the flange outer surface alignment jig according to claim 1 or 2, and make the outer surfaces flush with each other. It is the flange outer peripheral surface alignment method to make.

  To align the flange outer surface using this flange outer surface alignment jig, first look at the degree of displacement of the outer surfaces of the two flanges to be connected, and which point on which flange should be pressed Consider whether the flanges face each other and the outer peripheral surface is flush. Of the bolt holes of the flange A on the opposite side of the flange B to be pressed, select one bolt hole closest to the location where the displacement of the outer peripheral surface of the flange is the largest, and insert the protrusion attached to the plate A there. While attaching the plate material A to the piping side of the flange A. Further, as described above, the plate material B is attached to the piping side of the flange B, and the two reaction force receiving materials are fixed in such a manner as to connect the two plate materials.

  At this time, if the spacer function of the two reaction force receiving materials is utilized to fix both plate materials so that they are kept parallel, the plate material will fall down or come off the flange even if the impact when hammering is applied. It is possible to work stably.

  As described above, the two reaction force receiving members provided in the jig in this state are provided at positions near the outside of the outer peripheral surface of the flange. If a force is applied between the reaction force receiving material A and a gold arrow, the flange B can be moved closer to the flange A. Further, the reaction force when the gold arrow is driven is transmitted from the reaction force receiving material A to the projecting portion via the plate material A, and moves the flange A in a direction approaching the flange B, so that the flange A and the flange B are extremely effectively moved. It is possible to make them face each other and make their outer peripheral surfaces flush.

  Furthermore, if necessary, the flange B is moved with respect to the flange A by driving a gold arrow into both the outer peripheral surface of the reaction force receiving member A and the flange B and the outer peripheral surface of the reaction force receiving member B and the flange B. You can also.

  By this operation, the flanges can be easily faced to each other and their outer peripheral surfaces can be flush with each other without the help of a separate lever block (registered trademark) or jack. Further, this operation can be performed safely and in a short time even in a narrow space.

  The flange outer peripheral surface alignment jig of the present invention has a simple structure, can be easily manufactured at the construction site, and has a wide adaptability that can be used for various pipe diameters and flange configurations. . In addition, by aligning the outer peripheral surface of the flange using the jig of the present invention, it is possible to safely, easily and in a short time even in narrow spaces without the assistance of a separate Lever Block (registered trademark) or jack. With this, the flange surface can be directly opposed and the outer peripheral surface thereof can be made flush.

It is the side view (a) of Example 1 of the flange outer peripheral surface alignment jig | tool of this invention, and its AA arrow directional view (b). FIG. It is explanatory drawing of the point attached to the flange which makes the flange outer peripheral surface alignment jig | tool of Example 1 object. It is explanatory drawing of the method of aligning a flange outer peripheral surface using the flange outer peripheral surface alignment jig | tool of Example 1. FIG.

  Embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to such an embodiment, and it goes without saying that various modifications may be made to the specific structure within the scope of the present invention.

  1A is a side view of the flange outer peripheral surface alignment jig 1 according to the first embodiment, FIG. 1B is an AA arrow view thereof, and FIG. 2 is an exploded perspective view thereof. One plate member 2 of the two plate members 2 and 3 sandwiching the flanges of two pipes to be connected (not shown in these drawings) has a columnar protrusion 4 and Cylindrical portions 5a and 6a to be the reaction force receiving members 5 and 6 and stud bolts 5b and 6b provided on the top portions are attached. The other plate member 3 is provided with bolt holes 5c and 6c through which these stud bolts pass. The reaction force receiving members 5 and 6 are formed by tightening and integrating the corresponding nuts 5d and 6d through the stud bolts 5b and 6b.

  Further, in the vicinity of each of the reaction force receiving members 5 and 6 of the plate member 2, another stud bolts 7a and 8a are provided. By changing the positions of the nuts 7b and 8b, spacers 7 and 8 having variable heights are provided. Form. Various spacers are conceivable instead of this configuration. For example, each of the stud bolts 5a and 6a is provided with two nuts and the nut on the plate member 2 side is used as a spacer, or a female screw is cut at a location corresponding to the stud bolts 7a and 8a of the plate member 2 and the bolt is inserted. For example, the height is changed to be a spacer.

  FIG. 3 is an explanatory diagram of a procedure for attaching the flange outer peripheral surface alignment jig 1 of Example 1 to a target flange. Although not shown in the drawing, the reaction force receiving member 6 exists behind the reaction force receiving member 5 and the spacer 8 exists behind the spacer 7 in the same shape.

  When attaching the flange outer peripheral surface alignment jig 1, first check the degree of displacement of the outer peripheral surfaces of the flanges 12, 14 of the two pipes 11, 13 to be connected. Is facing and the outer peripheral surface is flush. FIG. 3 is a side view of the place where the displacement between the flange 12 and the flange 14 is the largest. When the top position 14a of the outer peripheral portion of the flange 14 is pushed, the flange 14 approaches the flange 12 and both It shows the situation that reaches the position facing the.

  The bolt hole 12a closest to the position 14a is selected from the bolt holes of the flange 12 on the opposite side of the flange 14 to be pressed, and the plate member 2 is attached to the pipe 11 side of the flange 12 while the protruding portion 4 is inserted therein. At this time, the cylindrical portions 5a and 6a constituting the reaction force receiving members 5 and 6 are positioned in the vicinity of the outer sides of the outer circumferences of both flanges.

  While the stud bolts 5 b and 6 b of the reaction force receiving material are passed through the bolt holes 5 c and 6 c provided in the plate material 3, the plate material 3 is attached to the pipe 14 side of the flange 14. The nuts 7b and 8b of the spacers 7 and 8 are moved in advance so that the height of the spacer is adjusted to be the sum of the two flange thicknesses and the distance D between the flanges.

  Finally, when the nuts 5d and 6d are fastened with the stud bolts 5b and 6b, the plate material 2 and the plate material 3 are fixed in parallel with a distance corresponding to the sum of two flange thicknesses and the distance D between the flanges. Each of the reaction force receiving members 5 and 6 is firmly held between the two plate members.

  FIG. 4 is an explanatory diagram of a method for aligning the flange outer peripheral surface using the flange outer peripheral surface alignment jig 1 of Example 1 attached in this manner. In this attached state, the flange 12 and the flange 14 do not face each other.

  If a gold arrow 15 is driven between the reaction force receiving member 6 near the position 14a to be pressed on the outer peripheral portion of the flange 14, in this figure, between the reaction force receiving member 6 and the outer peripheral portion of the flange 14, the flange 14 is inclined diagonally lower left in the figure. It moves toward the position facing the moving flange 12.

  At this time, the reaction force driven by the gold arrow is received by the reaction force receiving member 6, and the flange outer peripheral surface alignment jig 1 is rotated clockwise in the drawing around the protrusion 4. The rotation stops and is fixed when the other reaction force receiving member 5 comes into contact with the outer peripheral portion of the flange 14. In this state, the reaction force when the metal arrow is further driven is transmitted from the reaction force receiving member 6 to the projecting portion 4 via the plate member 2 and moves the flange 12 in a direction approaching the flange 14, so that both flanges are very effectively moved. It is possible to make them face each other and make their outer peripheral surfaces flush. ,

  In this case, the reaction force receiving material 6 corresponds to the above-described reaction force receiving material A, and the reaction force receiving material 5 corresponds to the reaction force receiving material B. Depending on the situation, there is no problem in changing the position of the gold arrow and making the roles of the two opposite. Further, if necessary, a gold arrow is driven into both the outer peripheral surface of the reaction force receiving member 5 and the flange 14 and the outer peripheral surface of the reaction force receiving member 6 and the flange 14 to move the flange 14 relative to the flange 12. You can also. Furthermore, if necessary, the direction of moving the flange can be easily changed by moving the position of the fixed shaft to another bolt hole of the flange.

  As described above, the protrusion 4 has only to be thinner than the diameter of the bolt hole of the corresponding flange as long as the strength permits, and the reaction force receiving members 5 and 6 are in the vicinity of the outside of the outer peripheral surface of the corresponding flange. Therefore, if the flange outer peripheral surface alignment jig of the present invention is produced, the diameter of the corresponding pipe is slightly changed. Alternatively, even if the shape of the flange changes slightly, it is possible to cope. Since it is not necessary to prepare many jigs with slightly different dimensions, the wide adaptability is extremely effective when working in narrow spaces.

1 Flange outer peripheral surface alignment jig
2, 3 Plate material
4 Protrusion
5, 6 Reaction force receiving material
5a, 6a Those cylindrical parts
5b, 6b Those stud bolts
5d, 6d those nuts
7, 8 Spacer
7a, 8a Those stud bolts
7b, 8b those nuts
11, 13 Piping
12, 14 Flange
12a Bolt hole of flange 12
14b Position to be pressed on the outer periphery of the flange 14

Claims (3)

It is a flange outer peripheral surface alignment jig which makes the flange outer peripheral surface flush with the flanges of two pipes to be connected facing each other,
Plate A and plate B sandwiching two flanges attached to each of the two pipes;
A columnar protrusion attached to the plate A and inserted into one bolt hole of either of the two flanges;
Two reaction force receiving members provided in parallel to the protruding portion, each of which can be fixed to both the plate material A and the plate material B, and the protruding portion is one of the two flanges. When it is inserted into one bolt hole, it is provided at a position near the outside of the outer peripheral surface of the two flanges and at a position that forms an approximately isosceles triangle having the protrusion as a vertex. A flange outer peripheral surface alignment jig comprising the two reaction force receiving members.   The flange outer peripheral surface alignment jig according to claim 1, wherein the two reaction force receiving members are a cylindrical portion attached to the plate member A and a stud bolt provided on a top portion of the cylindrical portion, and A flange outer peripheral surface alignment jig comprising a nut and having a spacer function of adjusting a distance between the two plate members.   A flange outer peripheral surface alignment method in which the flanges of the two pipes are opposed to each other using the flange outer peripheral surface alignment jig according to claim 1 or 2, and the outer peripheral surfaces thereof are flush with each other.

Images