KR100837654B1 - Assembly type grating - Google Patents

Abstract

A prefabricated grating is provided to reduce a manufacturing cost and to reduce an assembly process by installing a plurality of bearing bars between side bars with regular intervals and fitting two ends of bearing bars to side bars. A prefabricated grating(1A) comprises two side bars(2a), two insert holes(4), and a plurality of bearing bars(3a). The side bars, whose cross section is I-shaped, are parallel to each other. An upper and a lower insert protrusion unit which are inserted to the insert holes respectively protruded at two ends of the bearing bars. A step supporting surface is recessed between the upper and the lower insert protrusion units with step and supported by an inner surface of two side bars. The upper and the lower insert protrusion unit are fitted to an upper and a lower insert holes.

Description

Assembly type grating}

1 is a perspective view of one embodiment for explaining the present invention.

Figure 2 (A) (B) is an assembled state of the sidebar and the bearing bar of the embodiment.

Figure 3 is a plan view and a front view showing the installation state of the crossbar applied to the grating of the embodiment.

4 is a perspective view of another embodiment of the present invention.

Figure 5 (A) (B) is an assembled state of the sidebar and the bearing bar of the other embodiment.

6 to 8 is another embodiment of a bearing bar applied to the grating of the present invention.

※ Explanation of code for main part of drawing

1A, 1B: Grating 2a, 2b: Sidebar

21: vertical surface 3a, 3b: bearing bar

4: fitting hole 4a, 4b: upper, lower fitting hole

5a, 5b: upper and lower fitting protrusions 51,52: upper and lower support sections

53: single-layered ground 6: weld

7: crossbar

The present invention relates to a prefabricated grating installed to drain rainwater, such as rain gutter manhole installed on the side of the road, rain gutter manhole crossing the road, or a park or parking lot, and more specifically, both side bars and between them. In manufacturing a plurality of bearing bars (bearing bars) that are continuously installed at relatively narrow intervals in the prefabricated assembly, the assembly method of fitting both ends of each bearing bar to the side side bars to simplify the assembly process of each bearing bar to a low production cost The present invention relates to a grating capable of withstanding the load of a vehicle traveling on a road by allowing each bearing bar to be assembled in a rigid state on both side bars.

In general, gratings are installed on rain gutter manholes formed at certain sections of the roadside or across the road to discharge rainwater flowing on the road to the sewage in rainy weather. The grating is also installed in the drainage path.

The grating installed in the rain gutter manhole or the drainage channel has a structure in which a plurality of bearing bars are continuously installed at relatively narrow intervals inside each of the closed rectangular frame and the open frame formed in parallel to face each other. It is configured or configured to have one or more cross bars (cross bar) across the upper surface of each of the plurality of bearing bars are installed.

However, the grating of the prior art as described above welds the bearing bars because a plurality of bearing bars installed at regular intervals inside each of the closed or open molds are installed by welding their respective ends to the inner surface of the mold. Since it takes a lot of time and manpower, there is a disadvantage in that the production cost is expensive.In addition, in order to reduce the time and manpower required for welding, each bearing is welded in part without welding all the circumferences of both ends of each bearing bar. In order to eliminate the cause of such defects, the bars are not welded to the frame firmly, and the bearing bars may fall off the frame without bearing the load of the vehicle passing over the grating. Should be welded firmly to the frame However, in order to weld each bearing bar to the frame in a strong manner, as described above, it takes much time and manpower for welding, resulting in high production cost, and thus, the cost of the grating increases, which lowers the price competitiveness. It is pointed out as a problem.

Therefore, the present invention has been proposed in view of the above-mentioned matters appearing in the prior art, and the grating is fitted between both ends of each bearing bar to both side bars in the prefabricated installation of a plurality of bearing bars at regular intervals between both side bar. As a structure, the assembly process can be simplified and each bearing bar can be firmly assembled on both sidebars, thereby reducing production costs and providing high quality gratings with strong strength at a competitive price. It is invented with.

The present invention as a means for achieving the above object,

In the grating is formed so that the cross-section is formed in a "-" shape and the side bars on both sides parallel to each other, and a plurality of bearing bars are connected at both ends to the inner surface of each of the side side bars,

A plurality of fitting holes are formed in the vertical surfaces of each of the side bars, while penetrating at regular intervals in the longitudinal direction.

Both ends of each of the bearing bars are formed in a single-layered upper and lower sides of the fitting protrusion protruding to be fitted into the fitting holes formed on the vertical surfaces of each of the side bars, and formed on the inner surfaces of the respective side bars. The upper and lower support cross sections are supported, respectively, wherein both side fitting protrusions formed at both ends of each of the bearing bars are fitted into fitting holes formed at both side bars, and the upper and lower support cross sections are both side bar. It is characterized in that it is assembled to be supported on each inner surface.

In addition, both bearing bars that are assembled at each of both ends of at least both side bars of the plurality of bearing bars assembled at regular intervals between the side bars, the fitting protrusions at both ends are fitted in the fitting hole and the upper and lower support The cross section is characterized in that it is fixed by welding in a state supported on both side inner surface.

In addition, in the grating is formed so that the cross-section is formed in a "l" shape or "I" shape and the side bars parallel to each other and a plurality of bearing bars are connected at both ends to the inner surface of each of the two side bar in a predetermined interval. ,

The upper and lower ends of each of the side bars are formed with a plurality of upper and lower fitting holes in a cut state while maintaining a constant interval in the longitudinal direction.

Both ends of each of the bearing bars are inserted into the upper and lower fitting protrusions and the fitting protrusions in a single-layered state so as to be fitted into the upper and lower fitting holes formed at the upper and lower ends of the respective side bars. A single-layer support is formed on the inner surface of the structure, wherein the upper and lower fitting protrusions formed at both ends of the bearing bars are fitted into the upper and lower fitting holes formed at the upper and lower ends of the respective side bars. One floor support is characterized in that it is assembled to be supported on the inner surface of both side bars.

In addition, of the bearing bars assembled at both ends of each of at least both sidebars of the plurality of bearing bars that are assembled at a predetermined interval between the two sidebars, both of the upper and lower fitting protrusions at both ends are fitted with upper and lower fitting holes. It is characterized in that it is fixed by welding in the fitted state.

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

1 is a perspective view of an embodiment for explaining the present invention, Figure 2 (A) (B) is an assembled state of the sidebar and the bearing bar of the embodiment, Figure 3 is a crossbar of the grating applied to the embodiment of the 4 is a perspective view of another embodiment of the present invention, Figure 5 (A) (B) is an assembled state of the side bar and the bearing bar of the other embodiment, Figures 6 to 8 Another embodiment of a bearing bar applied to the grating of the present invention is shown.

In the drawings of the embodiment, reference numerals 1A and 1B denote gratings.

First, the grating 1A of the embodiment shown in FIGS. 1 and 2 has both sidebars 2a installed in parallel with each other and having a “a” shaped cross section and a plurality of bearing bars installed at regular intervals therebetween. (3a) It is produced by the structure which fits both ends to both side side bars 2a prefabricated.

The side bars 2a have fitting holes 4 formed therein to penetrate at regular intervals in the longitudinal direction on each of the parallel vertical surfaces 21 facing each other, and both ends of each of the bearing bars 3a. The protruding fitting portion 5 and the upper and lower support end surfaces 51 and 52 are formed.

The grating 1A configured as described above protrudes at both ends of each bearing bar 3a in a state in which a plurality of bearing bars 3a are positioned between both sidebars 2a as shown in FIG. When the fitting protrusions 5 are assembled in a state where the fitting protrusions 5 are fitted in the fitting holes 4 drilled on each of the vertical surfaces 21 of each of the side bars 2a at regular intervals, the upper and lower ends of each bearing bar 3a are supported. The end faces 51 and 52 are assembled in close contact with the inner surface of the vertical surface 21 of both side bars 2a, and thus a plurality of bearing bars are assembled at regular intervals between the side bars 2a. Both bearing bars 3a assembled at both ends of at least both sidebars 2a of 3a) are fitted with the one fitting protrusion 5 in a state where the fitting protrusions 5 at both ends thereof are fitted in the fitting holes 4. When the ball 4 is welded and fixed by the welding part 6, both side bars 2a have the same width as the length of the bearing bar 3a. The bearing bars 3a installed between the bearing bars 3a welded to both ends of each of the sidebars 2a are fixedly installed in parallel, and thus the fitting protrusions 5 formed at both ends thereof are provided at both ends. Even if not fitted by welding in the fitting hole (4) of the sidebar (2a) is to be installed in a sturdy structure that can strongly support both sidebar (2a). That is, since the grating 1A is installed in a state in which the vertical surfaces 21 of each of the side bars 2a are in close contact with each other inside the frame (not shown) fixed to the upper periphery of the upper part of the rain gutter manhole, etc. as designed, the grating 1A ) Even if the load of the vehicle passing on the above acts on each of the bearing bars 3a, both sidebars 2a do not occur outwardly, and each of the bearing bars 3a protrudes at both ends thereof. Both fitting protrusions 5 are fitted into the fitting holes 4 of the respective side bars 2a, and the upper and lower supporting cross sections 51 and 52 formed on the upper and lower sides of the respective fitting protrusions 5 respectively. ) Is installed in close contact with the vertical surface 21 of both sidebars 2a, so that even if a heavy load (for example, a vehicle load) acts on the grating 1A, the respective bearing bars 2a To hold the load firmly in place Which will allow.

In addition, as shown in FIG. 3, when one or more crossbars 7 are welded to cross the upper ends of the respective bearing bars 3a installed at regular intervals between both sidebars 2a, each bearing bar 3a is welded. They are installed in a more solid state by the crossbar (7) described above.

In addition, the crossbar 7 is a spiral bar twisted steel bar cross section, as described above, the crossbar 7 twisted in a spiral shape has a non-slip function to prevent slipping of the footsteps of people passing by the grating 1A. Have.

Next, the grating 1B of the embodiment shown in FIGS. 4 and 5 is provided with two sidebars 2b installed in parallel with each other while having a cross-section of a "|" shape, and are provided at regular intervals between the sidebars. Both ends of each of the plurality of bearing bars (3b) is manufactured in a structure that fits both side bars (2b) prefabricated.

Each of the side bars 2b has a plurality of upper and lower fitting holes 4a and 4b which are cut and symmetrically disposed at upper and lower ends thereof in succession at regular intervals in the longitudinal direction. Upper and lower fitting protrusions fitted to upper and lower fitting holes 4a and 4b of the respective side bars 2b at both ends of each of the plurality of bearing bars 3b that are installed at a predetermined interval in (2b). 5a) and 5b are formed, and between the upper and lower fitting protrusions 5a and 5b, there is formed a single-layered support surface 53 which is in close contact with the inner surface of both sidebars 2b.

The grating 1B configured as described above has both ends of the bearing bars 3b in a state in which a plurality of bearing bars 3b are positioned between the side bars 2b as shown in FIG. 5A and 5B. The upper and lower fitting protrusions 5a and 5b formed on each side are assembled in order from one side upper and lower fitting holes 4a and 4b formed at the upper and lower ends of the respective side bars 2b. Of the bearing bars 3b assembled at regular intervals between the side bars 2b as described above, both side bearing bars 3b assembled at both ends of the side bars 2b are upper and lower ends of the bearing bars 3b. When the lower fitting protrusions 5a and 5b are welded to the upper and lower fitting holes 4a and 4b of both sidebars to form a weld 6, the sidebars 2b are formed. Is installed in parallel with the same width as the length of the bearing bar (3b), and by the welding portion (6) both side bars (2b) Each of the bearing bars located between the two bearing bars 3b fixed by welding at both ends thereof has upper and lower fitting protrusions 5a and 5b formed at both ends to fit the upper and lower parts of each side bar. It is fixed and installed in the state fitted to the ball 4a, 4b.

And the grating 1B assembled as described above is also installed in a state in which both side bar (2a) is fitted inside the frame (not shown) fixed to the upper periphery of the rain gutter manhole as designed, the both side bar (2b) and A plurality of bearing bars (3b) arranged at regular intervals between them is to be kept firmly installed.

In addition, the grating 1B maintains the strength of each bearing bar 3b more firmly by welding one or more crossbars 7 to cross the upper ends of the plurality of bearing bars 3b as shown in FIG. 3. You will be able to.

Meanwhile, in the drawing, the gratings 1A and 1B are manufactured by using the steel bars having the bearing bars 3a and 3b having a cross-section of "l" shape as an example, but the cross-section as shown in FIG. The gratings 1A and 1B of the embodiment shown in Figs. 1 and 4 can be manufactured by cutting and cutting both ends as shown in Figs.

According to the present invention as described above in the assembling installation of a plurality of bearing bars at regular intervals between the side bars formed parallel to each other while the cross-section is formed in a "b" shape or "l" shape at regular intervals on each of the two side bar Both sides assembled at both ends of both sidebars with the effect of easily assembling a plurality of bearing bars on both sidebars by assembling by inserting the fitting protrusions formed at both ends of each bearing bar in turn into the fitting holes formed in the Welding work to fix the fitting protrusions formed at both ends of the bearing bar by fitting them to the fitting holes of both sidebars so that both sidebars and a plurality of bearing bars assembled between them can be firmly manufactured in an integrated state. Effect between the two sidebars. Not only can it be manufactured with assembly structure that inserts a number of bearing bars in order, but also it can be manufactured by welding only the bearing bars on both ends of both side bars to be fixed by welding, so that the assembly work is easy and the welding work can be shortened. It is possible to reduce the production cost of the grating to provide the advantage of increasing the price competitiveness of the prefabricated grating.

In addition, the fitting protrusions formed at both ends of each of the bearing bars assembled between both bearing bars welded to both ends of both sides of the side bars are inserted into the fitting holes of both side bars, thereby welding a part of the fitting protrusions to the fitting holes. In this case, both sidebars and a plurality of bearing bars may also provide effects that can be manufactured in a more firmly coupled state.

Claims (4)

delete delete Cross-sections are formed in an "l" shape or an "I" shape, and both sidebars installed in parallel with each other, and the fitting protrusions inserted into each of the two side holes formed at regular intervals so as to face each other on each of the sidebars are protruded from both ends. In the grating is provided with a plurality of bearing bars arranged at regular intervals between the side bars, The fitting holes formed at predetermined intervals on each of the side bars are composed of upper and lower fitting holes formed in a state of being cut at the top and bottom of each of the side bars. The fitting protrusions protruding at both ends of each of the bearing bars are fitted to the upper and lower ends of each of the bearing bars so as to be fitted into the upper and lower fitting holes formed at the upper and lower ends of the respective side bars. The upper and lower fitting protrusions are formed in a single layer between the upper and lower fitting protrusions and are supported on the inner surface of each of the side bars, respectively. The lower fitting protrusion is fitted to the upper and lower fitting holes formed at the upper and lower ends of each of the side bars, and the single layer support surface is assembled to be supported to support the inner surfaces of both side bars. The method of claim 3, wherein Both bearing bars assembled at both ends of at least both side bars of the plurality of bearing bars assembled at a predetermined interval between the two side bars have a state in which upper and lower fitting protrusions at both ends thereof are fitted into upper and lower fitting holes. Prefabricated grating, characterized in that fixed by welding in.

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