JP5424394B2 - Method for installing lifting installation type structure and installation jig used therefor - Google Patents

Description

  The present invention relates to, for example, a method for installing a lifting installation type structure in a case where a lifting installation type structure represented by a reaction tower, a distillation column, or a tank used in an oil refinery plant or the like is installed by a crane. It relates to a mounting jig.

  In general, reaction towers, distillation towers, tanks and the like installed in oil refineries and the like are huge structures that are long in the vertical direction. In such a huge structure, for maintenance, inspection, management, etc., a platform is provided continuously from the skirt to the top or at a predetermined location.

  On the other hand, in large structures installed in these oil refining plants, thorough temperature control is often performed, and in that case, various means for avoiding thermal effects are taken on the inner and outer surfaces of the structure. .

  Thus, the huge lifting installation type structure is installed in the installation place by being lifted in the vertical direction by a crane from a horizontally placed state (Patent Document 1).

  By the way, when such a lifting installation type huge structure is installed by lifting with a crane, conventionally, an installation jig is installed directly on the outer peripheral surface of the structure body, and a wire is locked to the jig. It was hanging up.

  Since the installation jig for mounting the huge structure by attaching the wire in this way is required to be robust and strong enough to become a large structure, for example, the height is 10 to 150 meters, and the total weight is 10 to 10 m. In the case of an installation jig required for a lifting installation type structure that reaches 1000 t, the jig alone has a thickness of 10 to 300 mm, a width of 150 to 1000 mm, a length of 400 to 2000 mm, and a weight. It is formed of a metal plate having a capacity of 100 kg to 5 t.

  The installation jig attached to such a huge lifting installation type structure is large and heavy, and the influence of heat dissipation cannot be ignored. In some cases, after the lifting operation is completed, it is required to disconnect the installation jig from the device main body.

  Specifically, two installation jigs are directly fixed on the upper side of the outer peripheral surface of the device main body, which is a lifting installation type structure, and integrated with the device main body. Next, the device main body is lifted in the vertical direction by hooking a wire to a hole formed in the installation jig via a coupling fitting or the like. Then, after the predetermined installation work is completed, the installation jig is cut and separated from the device main body.

In addition, a connection metal fitting is a metal fitting for connecting a wire and a jig | tool when suspending a heavy article etc., Specifically, a shackle is mention | raise | lifted. The shackle is composed of a U-shaped bracket and a shackle pin.

JP 2008-138918 A

  By the way, the work of removing the installation jig for the suspended installation type structure in this way is work at a high place several tens of meters above the ground, so it is necessary to construct a scaffold around the installation jig. In addition, in order not to drop the installation jigs on the ground, there is a problem that these jigs must be held in a state of being securely held by a crane.

  In view of such circumstances, the present invention does not require much labor in removing the installation jig necessary for raising the lifting installation type structure from the structure after the raising is completed. It is an object of the present invention to provide a method for installing a lifting installation type structure that can be removed safely and easily and an installation jig used therefor.

In order to achieve the above object, a method for installing the lifting installation type structure according to the present invention is as follows.
A lifting installation type structure in which a lifting installation type structure in which a platform is installed at the top is lifted in a vertical direction by a crane and installed in a predetermined place,
A wire attachment jig is detachably attached to the platform by a fastening means by bolting via a reinforcing member,
The crane wire or connecting bracket is attached to the wire attachment jig, the lifting installation type structure is installed at a predetermined location, and after the installation is completed, the wire attachment jig attached to the platform is installed. In this case, the fastening means by the bolt screwing is released from the platform by releasing the fastening means.

  With such an installation method, there is no need to cut between the lifting installation type structure and the installation jig by fusing, etc., and it can be removed simply by releasing the screwing of the bolts. The removal work can be easily performed without using it.

  Here, the wire attachment jig is preferably detachably attached via a reinforcement member attached to the platform. As the reinforcement member, for example, a ring-shaped reinforcement member may be exemplified. it can. However, the reinforcing member is not limited to a ring shape.

As described above, if the wire attachment jig is attached via the reinforcing member, the attachment strength to the main body of the huge structure can be relaxed, and sufficient strength can be exhibited even for a large lifting load. it can.
Further, in the actual removal operation, there is no fear of dropping even if the wire attachment jig is not held by a crane, and the removed wire attachment jig can be temporarily placed on the platform. Thereby, the holding | maintenance by a crane is not necessarily required.

  The reinforcing member is preferably left as a part of the platform after the installation of the lifting installation type structure is completed.

  Thus, if the reinforcing member is left as a component of the platform, the strength of the platform is improved.

  Moreover, it is preferable to install a shielding member of substantially the same shape prepared in advance on the site formed by removing the wire attachment jig to cover the site.

  Thus, if a shielding member is installed in the trace of a wire attachment jig, the trace can be made substantially flat.

Furthermore, the installation jig according to the present invention is an installation jig for a lifting installation type structure in which a lifting installation type structure in which a platform is installed at the top is lifted in a vertical direction by a crane and installed in a predetermined place,
A reinforcing member attached to the platform;
A plurality of bolt insertion holes are formed in the outer peripheral portion, and a board portion that is detachably attached to the reinforcing member by bolts inserted through the bolt insertion holes, and a crane wire or connection integrally installed from the board portion A wire mounting jig comprising a rising plate portion in which an insertion hole for passing a metal fitting is formed;
It is characterized by comprising.

  With such an installation jig, the configuration is easy and can be easily created. In addition, since it is not necessary to separate by bolting, it is only necessary to unscrew the bolts, so even if working at a high place, the work can be easily performed, and a scaffold for removal is particularly necessary. do not do. Further, the removal work can be performed even when the wire attachment jig is not held by the crane wire.

  According to the method for installing a lifting installation type structure according to the present invention, if the connection by simply screwing is released, the installation jig is disassembled and the wire mounting jig as the main part is removed from the lifting installation type structure. Can be removed. Therefore, it is possible to avoid a peculiar problem that occurs in the case of a huge structure such as assembling a scaffold as in the past or supporting an installation jig with a crane. Therefore, the safety of high-altitude work, which is generally accompanied by danger, is improved and simplified, and the work cost can be reduced.

  Furthermore, by attaching the wire attachment jig to the platform via the reinforcing member, the strength can be improved and the uneven distribution of the load burden can be eliminated.

  In addition, the installation jig according to the present invention has a simple configuration, can exhibit strength for lifting a lifting installation type giant structure, and can easily attach a wire or a connecting bracket. .

FIG. 1 is a front view when a lifting installation type structure is lifted by an installation method according to an embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view showing a mounting portion between a connecting metal fitting and a wire in the lifting installation type structure shown in FIG. FIG. 3 is a plan view showing an installation jig employed in an installation method according to an embodiment of the present invention. FIG. 4 is an exploded perspective view of an installation jig according to an embodiment of the present invention. FIG. 5 is a plan view of a shielding plate for covering the site after the wire mounting jig is removed. FIG. 6 is a schematic perspective view of the top of a distillation column in which an installation jig according to an embodiment of the present invention is installed. FIG. 7 is a schematic perspective view showing the top of a lifting installation type structure in which an installation jig according to an embodiment of the present invention is installed. FIG. 8 is a perspective view showing a top portion of a lifting installation type structure in which a shielding plate is attached to a site after a wire attachment jig employed in an installation jig according to an embodiment of the present invention is removed.

  Hereinafter, a method for installing a lifting installation structure according to an embodiment of the present invention and an installation jig used therefor will be described with reference to the drawings.

  FIG. 1 shows a state of implementation of a lifting installation type structure installation method according to an embodiment of the present invention.

  As shown in FIG. 1, for example, in an oil refinery plant or the like, a number of lifting installation type structures 10 that are long in the vertical direction (hereinafter, such a huge structure 10 is referred to as a distillation column 10) are installed. Thus, the distillation column 10 formed long in the vertical direction is provided with a platform 16 continuously from the skirt to the top or at predetermined intervals for maintenance, inspection, management, and the like.

  In this way, the distillation column 10 that is long in the vertical direction is brought into the field in a horizontally placed state, and then is vertically moved by the wire 14 of the crane 12 through an appropriate connection fitting 15 as shown in FIG. 2, for example, a shackle. It is lifted and is erected at a predetermined place.

  Therefore, in this embodiment, in order to hook the wire 14 to the distillation column 10 through the shackle, an installation jig 50 as shown in FIG. 3 and FIG. 4 is installed in the portion that becomes the platform 16A at the top of the distillation column 10. ing.

  The installation jig 50 includes a pair of wire attachment jigs 30 and 30 and a reinforcing member 22 for installing the wire attachment jigs 30 and 30 on the platform 16A.

  The wire attachment jig 30 is formed in a substantially T shape from a substrate portion 33 and a rising plate portion 31 raised from the substrate portion 33, and the shank pin insertion hole 38 is formed in the rising plate portion 31. Is formed through. The wire attachment jig 30 is integrally and detachably fixed to a reinforcing member 22 formed in, for example, a substantially ring shape via a large number of bolts 24.

  On the other hand, a large number of screw holes 22a are formed annularly in a pair of arcuate mounting portions 23 provided on the outer peripheral portion of the reinforcing member 22 for installing the wire attachment jig 30. The reinforcing member 22 is fixed in advance to the platform 16A via an appropriate fixing means such as a bolt or welding (not shown).

  In the present embodiment, at the manufacturing stage, the ring-shaped reinforcing member 22 is first fixed to the platform 16A by appropriate fixing means such as welding or bolts. And the wire attachment jig | tool 30 is detachably and integrally installed with respect to the reinforcement member 22 at the upper both sides of the reinforcement member 22, respectively. The wire attachment jig 30 is attached to the reinforcing member 22 by inserting the bolt 24 into the bolt insertion hole 30a formed in the substrate portion 33 of the wire attachment jig 30, and using the screw portion 24a at the tip of the bolt 24 of the reinforcement member 22. The wire attachment jig 30 is integrally attached to the reinforcing member 22 by being screwed into the screw hole 22a.

  Therefore, in this embodiment, the wire mounting jig 30 can be removed from the reinforcing member 22 by releasing the screwing of the bolts 24 screwed to the reinforcing member 22 (the screw 24 is rotated and coupled). .

  The wire attachment jig 30 employed in the installation jig 50 of the lifting installation type structure according to this embodiment is installed in advance on the platform 16A via the reinforcing member 22 as described above. In addition to the mounting jig 30, as shown in FIG. 5, substantially trapezoidal shielding members 34 and 34 whose outer periphery is partially formed in an arc shape are prepared in advance.

  The shielding member 34 is formed in a size corresponding to the substrate portion 33 of the wire attachment jig 30. These shielding members 34 are metal plates, and through holes 34a through which screws 52 are inserted are formed at predetermined positions as shown in FIG. The shielding member 34 may be a combination of a plurality of members.

  Below, the installation method in the case of installing the distillation column 10 in the vertical direction using said installation jig 50 is demonstrated.

  First, as shown in FIG. 1, the pair of wire attachment jigs 30 and 30 shown in FIG. 4 are attached to the reinforcing member 22 of the platform 16A at the top of the distillation column 10 which is a huge structure before being lifted. Are attached by a plurality of bolts 24 as follows.

  FIG. 6 shows the top of the distillation column 10. As shown in FIG. 6, an extraction pipe 40 for recovering gas or the like is set up at the top of the distillation column 10.

  A horizontal reinforcing member 44 extends radially below the platform floor from below the flange 42 provided in the extraction pipe 40, that is, from the top of the distillation column 10, and the tip of the horizontal reinforcing member 44 has a ring-shaped frame. It is passed to the lower surface of the body 70. In addition, longitudinal legs 46 are installed at predetermined intervals in a substantially concentric shape of the extraction pipe 40. In addition, in FIG. 6, the code | symbol 48 has shown the fence provided in order to ensure safety.

  In this way, a base for installing the wire attachment jig 30 and the reinforcing member 22 is constructed at the top of the distillation column 10, and this base constitutes a part of the platform 16A.

  FIG. 7 is a perspective view showing a state where the installation jig 50 is installed on the top of the distillation column 10 shown in FIG. In FIG. 7, other members such as the distillation column 10, the frame body 70, and the fence 48 other than the main part are omitted.

  First, for example, the ring-shaped reinforcing member 22 is fixed to the vertical leg 46 of the distillation column 10 shown in FIG. 6 by appropriate fixing means such as bolts or welding, and the ring-shaped reinforcing member 22 is attached to the ring-shaped reinforcing member 22. The wire attaching jig 30 is installed integrally and detachably by the bolt 24. After that, as schematically shown in FIG. 7, a floor plate 60 of a predetermined size is laid flat without any gap around the wire attachment jig 30 inside the frame body 70. Thereby, the preparation for lifting the distillation column 10 is completed.

  When the distillation tower 10 having the wire attachment jig 30 fixed and installed in advance is lifted in the vertical direction by the crane 12 shown in FIG. 1, first, the wire attachment treatment of the distillation tower 10 placed horizontally is first performed. The wire 14 of the crane 12 is hooked into the insertion hole 38 of the tool 30 through the connecting fitting 15 such as a shackle. Thereafter, the distillation tower 10 is lifted in the vertical direction and installed by crane operation.

On the other hand, after the installation is completed, the wire attachment jig 30 which is the main part of the installation jig 50 is no longer necessary and needs to be removed, so that the operator moves up to the platform 16A and moves to the wire attachment jig 30. Perform the removal work. In this case, the operator can easily remove the wire attachment jig 30 from the reinforcing member 22 by releasing the screw 24 using a prepared tool such as a spanner. Here, since the wire attachment jig 30 is installed on the floor surface of the platform 16A, it is not necessary to assemble a scaffold around the periphery. Moreover, even if it is not hold | maintained with the crane 12, when removing, there is no possibility that the removed wire attachment jig | tool 30 may fall on the ground, and it can place temporarily on the platform 16A. The ring-shaped reinforcing member 22 is left on the platform 16A without being removed and constitutes a part thereof.

  On the other hand, when the wire attachment jig 30 is removed, a trace is formed in the portion where the wire attachment member 30 exists. The shield plates 34 and 34 shown in FIGS. If installed, the ruins can be covered with the shielding plate 34. Thereby, the whole floor surface of this platform 16A can be made substantially flat.

  Therefore, there is no obstacle on the platform 16A when regular maintenance, inspection, etc. are performed after the installation is completed.

  Further, in the present invention, the wire attachment jig 30 that easily causes a heat effect such as heat dissipation is not left on the peripheral surface of the lifting installation type structure 10, so that the temperature management is facilitated.

  Furthermore, in this embodiment, instead of fusing and removing the installation jig 50 from the lifting installation type structure 10, first, the fastening means by the bolt connection is released and the wire attachment jig 30 as the main part is removed. . Therefore, workability is improved. In addition, the removal work can be performed without providing a scaffold in particular. Further, when releasing the screwing of the bolt 24, even if the wire attachment jig 30 is not held by the crane 12 or the like, the wire attachment jig 30 is not likely to fall downward. In addition, since such a removal operation can be performed easily and safely in a short time, it contributes to cost reduction.

  As mentioned above, although the installation method of the lifting installation type structure based on one Example of this invention and the installation jig used for it were demonstrated, this invention is not limited to the said Example at all.

  For example, in the above embodiment, the distillation tower 10 is exemplified as the lifting installation type structure. However, the lifting installation type structure of the present invention can be applied to other lifting installation type structures such as reaction towers and tanks other than the distillation tower. It is.

  Further, the shape of the platform 16A formed at the top of the distillation column 10, the structure of the horizontal reinforcing member 44, the vertical leg 46, the frame 70, and the fence 48 for installing the reinforcing member 22 on the platform 16A are as follows. It is not particularly limited.

  The reinforcing member 22 is preferably left as it is on the platform 16A, but it may be fastened by bolting or the like, and the reinforcing member 22 may be removed as necessary.

  Furthermore, the reinforcing member 22 for attaching the wire attaching jig 30 may have other shapes. For example, as a substitute for the ring-shaped reinforcing member 22, a rectangular type, a getter, or a combination of radial shapes can be exemplified.

  The installation jig 50 according to the present invention can be similarly applied to an installation jig installed on the bottom surface side of the lifting installation type giant structure.

  In the present invention, the structure of the other parts is not limited as long as the structure is such that the mounting jig 50 is a fastening means using bolts and the wire mounting jig, which is the main part, can be detachably attached.

10 Lifting installation type structure (distillation tower)
12 Crane 14 Wire 15 Connecting bracket 16, 16A Platform 22 Reinforcing member 22a Screw hole 24 Bolt 30 Wire mounting jig 31 Standing part 33 Substrate part 34 Shielding member 38 Insertion hole 50 Installation jig

Claims (4)

A lifting installation type structure in which a lifting installation type structure in which a platform is installed at the top is lifted in a vertical direction by a crane and installed in a predetermined place,
A wire attachment jig is detachably attached to the platform by a fastening means by bolting via a reinforcing member,
The crane wire or connecting bracket is attached to the wire attachment jig, the lifting installation type structure is installed at a predetermined location, and after the installation is completed, the wire attachment jig attached to the platform is installed. A lifting installation type structure installation method comprising: removing from the platform by releasing the fastening means by screwing the bolts.   The method of claim 1, wherein the reinforcing member is left as a part of the platform after the installation of the lifting installation type structure is completed.   2. The lifting installation type structure according to claim 1, wherein a shield member having substantially the same shape prepared in advance is installed on the site formed by removing the wire attaching jig so as to cover the site. How to install things. A lifting installation type structure in which a lifting installation type structure in which a platform is installed on the top is lifted in a vertical direction by a crane and installed in a predetermined place,
A reinforcing member attached to the platform;
A plurality of bolt insertion holes are formed in the outer peripheral portion, and a board portion that is detachably attached to the reinforcing member by bolts inserted through the bolt insertion holes, and a crane wire or connection integrally installed from the board portion A wire mounting jig comprising a rising plate portion in which an insertion hole for passing a metal fitting is formed;
An installation jig for a lifting installation type structure characterized by comprising:

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