JP2581572B2 - Split joints for horizontal members - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a divided joint, and more particularly, to a divided joint of a horizontal member which facilitates division and coupling by using a pin at a coupling portion.

[Conventional technology]

Conventionally, for example, in the construction work of a nuclear power plant or the like, in the module construction method in which equipment and piping in the building are installed in a pre-assembled manner, the loading and unloading of the module is performed.
A temporary gantry is used for the setting, and various devices are installed at predetermined locations by an installation method using a trolley as described in JP-A-57-144398.

[Problems to be solved by the invention]

However, the above-mentioned prior art has no problem when the fixtures are carried into the building by the horizontal pulling method, but in recent plants, for the purpose of shortening the construction period and streamlining the installation, before the ceiling of the building is completed. A loading method called direct-on or blue sky loading, in which products are suspended directly to the installation location using a crane or other lifting machine, is adopted.In such a method, the product or module to be installed is used. There are cases where there is little horizontal spatial freedom or extra space. In other words, in areas where the fixtures occupy the installation site, horizontal pulling carts as in the prior art,
Since there is no space for carrying out the temporary gantry in the horizontal direction, provision of temporary openings and the like for taking out these tentatively, and installation of piping and operation gantry, etc. attached to the fixtures until these are taken out There was a problem that inconvenience occurred such that installation work could not be performed.

An object of the present invention is to solve the above-mentioned problems, and to make a platform for carrying these products into a shape that can be easily removed in advance, and to provide a horizontal material that can flexibly correspond to any size. It is to provide a split joint.

[Means for solving the problem]

In order to achieve the above object, a cross joint of a horizontal member of the present invention is a split joint of a horizontal member in which a connecting portion of a horizontal member made of a mold steel is splitably connected by fitting a pin. Each of the connecting portions of the steel cross member is provided with a formwork block having a fitting portion that is continuous with each other, and a steel pin is attached to the formwork block along the axis of the mold steel transverse material. On the other hand, there is provided a pin holding means such as a pressing plate which is fitted in the vertical direction at an angle of about 45 degrees and holds the steel pin in the fitting portion.

[Action]

According to the above configuration, since the pins are fitted in the vertical direction at an angle of approximately 45 degrees with respect to the axis of the horizontal member, the horizontal members to be connected are integrally joined, and the external force as a whole of the horizontal member is The structure can withstand the load. Further, the fitted pin is fixed to the building block by means such as a holding plate, so that it does not come off accidentally. Therefore, the horizontal members are connected by fitting the pins, and can be easily divided by removing the pins.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In FIGS. 1 to 3, the frames 1, 1 are connected by fitting pins 2 to connecting portions of the frames 1, 1 using H-shaped steel as a horizontal frame. The pin 2 is adapted to be fitted into a mold block 3, 3 fixed by welding or the like in the gantry 1, 1, and the fitted pin 2 is inadvertently provided from the mold block 3, 3. The pins 2 are held on the outer sides of the mold blocks 3 and 3 using a holding plate 4 so that the pins 2 are not pulled out, and the holding plate 4 is fixed to the forming blocks 3 and 3 by connecting bolts 5 and 5.

Further, since the pins 2 are fitted into the respective gantry 1, 1 at an angle of 45 degrees, the gantry 1, 1 is integrally formed, and an external force is applied to the gantry 1, 1 so that the load and bending moment cause shearing of the gantry 1, 1. Even when force and pulling load are applied,
Are designed to withstand the respective loads, and the gantry 1, 1 as a whole has a structure capable of withstanding an external force load.

When the gantry 1,1 is divided, the connecting bolts 5,5 are pulled out, the holding plate 4 is removed, and the pin 2 is formed into a block 3,3.
By pulling it out from 3, the mounts 1 and 1 can be easily connected free.

According to the present embodiment, for example, while the module is temporarily suspended by a chain block, the gantry 1, 1 can be divided and carried out, and the gantry 1, which has been divided and carried out and becomes used, can be used.
1,1 can be reused by being reassembled and assembled when a new module is loaded, and by appropriately increasing or decreasing the number of connections of the gantry 1,1 It is versatile as a unit-type mount that can be used, eliminating the need for labor and resources for manufacturing a temporary mount that was conventionally manufactured according to individual module shapes.

FIGS. 4 and 5 show an application of the present invention, and FIG. 4 is a detailed view of mold blocks 3a, 3a which are connected by using a concave pin 2a.

FIG. 5 is a detailed view of the mold blocks 3b, 3b connected by using the iron array-shaped pins 2b.

By using these application examples, it is easy to combine and divide the gantry described in the embodiment, and the resistance to tension and bending moment load due to the module load applied to the entire gantry is improved.

Next, a procedure for performing the installation work of the module 120 using the unit-type gantry 110 using this embodiment will be described with reference to FIG.

(1) In parallel with the reinforced concrete rebar assembling work, which is a part of the construction work of the nuclear power plant building, the mounting hardware 130 for installing the module is installed at a predetermined module setting position, and then concrete is poured. Complete the skeleton.

(2) Even after the completion of the skeleton or during the construction of the skeleton,
The module 120, which is a pre-assembled product consisting of equipment, piping, trays, ducts, supports, operation stands, etc., is temporarily supported and fixed during transportation and loading of the equipment while the equipment can be loaded and installed. A temporary frame 140 to which a unit-type frame 110 for connection is connected is taken into the building.

At this time, the means for transferring the module 120 to a predetermined position / set place in the building uses a crane, a hoist or a chain block 150 for vertical movement, and a cart or a carriage for horizontal movement, that is, horizontal pulling. This is performed using a roller or a monorail.

(3) The module 120 that has completed the horizontal pulling movement and carry-in operation to the set site is temporarily suspended by using a crane or other hoisting machine, and then the unit-type gantry 110 is carried out according to the individual divisions and then carried out. Hang it down to the set position and embed hardware 13
Set to 0 and fixed by welding or the like.

(4) Unit-type base 110 that has been divided and used
Is transported to the outside of the nuclear power plant through the temporary opening into which the module 120 has been introduced or through a general-purpose material discharge path, is reassembled in an outdoor yard, and is assembled and used as a temporary mounting base for installing the next module. .

According to an embodiment of the present invention, the disadvantages of the prior art are improved.

First, at the time of setting the module, if the temporary gantry is taken off, for example, if the setting place is narrow, in the conventional case, as shown in FIG. 7, the temporary gantry 140 is integrated (for example, one H Because of this, there was no space for pulling out, and it was necessary to cut off the temporary base 140 during the pulling or to provide an extra temporary opening in the frame for pulling out. By using it, the gantry can be easily removed by dividing and transporting the gantry 140 to the individual unit-type gantry 110 even in a narrow space, and a temporary frame opening for pulling out the gantry is provided. It is no longer necessary.

In addition, even a large-sized temporary mount corresponding to a large-sized module can be handled by unloading individual unit-type mounts, thereby facilitating the work.

Furthermore, in general, since the dimensions of a module product are not uniform, in the past, a temporary base had to be manufactured by cutting out steel materials in accordance with the dimensions of the module, one by one, and wasteful work was performed as a temporary material. However, by using this embodiment, it is possible to cope with any shape of module by appropriately increasing or decreasing the number of unit-type mounts to be connected. It also has the effect of eliminating the hassle of producing and resources.

〔The invention's effect〕

As described above, according to the present invention, since the connecting portions of the horizontal members are splitably connected by fitting pins, the horizontal members can be divided and assembled very easily.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG.
3 is a sectional view taken along the line III-III of FIG. 2, FIGS. 4 and 5 are perspective views showing an application example of the present invention, and FIG. 6 is a module installation work utilizing the present invention. An explanatory diagram showing
FIG. 7 is an explanatory view showing a conventional installation operation. 1 ... Stand, 2 ... Pin, 3 ... Form block, 4 ...
... holding plate, 5 ... bolts.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Atsushi Miura 3-1-1, Sachimachi, Hitachi-shi, Ibaraki Pref. Hitachi, Ltd. Hitachi Plant (56) References Real-life 1984-75808 (JP, U) 1979-34542 (JP, U) Jiko 35-27537 (JP, Y1)

Claims (1)

(57) [Claims] In a split joint of a cross member, a connecting portion of a cross member made of a mold steel is splitably connected by fitting a pin, a connecting portion of the cross member of the cross member made of a steel is provided. A formwork block having a fitting portion that is continuous with each other is attached, and a steel pin is fitted to the formwork block at an angle of approximately 45 degrees in an up-down direction with respect to the axis of the cross-member made of the form steel. And a pin holding means such as a holding plate for holding the steel pin in the fitting portion.