JP2018118305A - Spark scattering prevention box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spark scattering prevention box which can unfailingly prevent scattering of sparks to a surrounding area occurring when, for example, a web and flanges forming an H shaped steel etc. of a building are fused and welded.SOLUTION: The invention relates to a spark scattering prevention box formed by a housing which is attached so as to cover a predetermined portion of an H shaped steel in order to prevent scattering of sparks occurring when the H shaped steel including flanges at both ends of a web and installed in a vertical direction is fused and welded. The housing attached to the H shaped steel includes an opening window part for fusing and welding the flanges of the H shaped steel from the outer side of the housing. Further, the housing includes an opening/closing door which opens or closes the upper side of the housing in order to fuse and weld the web of the H shaped steel in the housing.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a spark scatter prevention box for preventing sparks generated when, for example, H-shaped steel or the like of a building is melted and welded.

  In general, when a building, for example, H-shaped steel or the like is melted using a gas cutting torch or the like, sparks are generated and scattered around, resulting in an extremely dangerous state.

  Such a situation also occurs when H-shaped steel or the like is welded using a gas cutting torch or the like.

  Therefore, conventionally, as shown in Patent Document 1, a heat-resistant bag is attached to a substantially U-shaped frame portion, and this frame portion is attached to an H-shaped steel flange with a magnet via a band or a chain. There is provided a fireproof cover having a structure in which sparks generated when magnetized and melted are dropped into the bag.

JP 2004-114082 A

  However, since the above-described fireproof cover of Patent Document 1 is a bag body that is open on the upper side, it is difficult to reliably catch the sparks generated so as to jump up vigorously when fusing.

  In addition, when the web is blown, the fire protection cover of Patent Document 1 must be replaced on the web side, so that the time and labor spent for this work are extremely large.

  Therefore, the present invention has been created in view of the existing circumstances as described above. For example, the sparks scattered around a building, for example, when a web and a flange such as H-shaped steel are fused and welded are scattered. It is an object of the present invention to provide a spark scatter prevention box that can reliably prevent the above.

The invention of claim 1 according to the present invention is attached so as to cover a predetermined portion of the H-shaped steel in order to prevent sparks generated when fusing and welding the H-shaped steel having flanges at both ends of the web. It is a spark scatter prevention box consisting of a housing,
The housing attached to the H-shaped steel includes an opening window portion for fusing and welding the H-shaped steel flange from the outside of the housing, and a part of the housing for fusing and welding the H-shaped steel web in the housing. The above-mentioned problem has been solved by providing an open / close door that opens and closes the door.

  According to the spark scatter prevention box according to claim 1, for example, sparks generated when fusing and welding a web such as H-shaped steel and a flange are dropped into the casing, so that the spark can be reliably prevented from being scattered around the periphery. can do.

Further, the invention of claim 2 according to the present invention is provided with flanges at both ends of the web, in order to prevent the sparks generated when fusing and welding the H-shaped steel installed in the vertical direction. It is a spark scatter prevention box consisting of a casing that is attached to cover a predetermined part of
The housing attached to the H-shaped steel includes an opening window portion for fusing and welding the H-shaped steel flange from the outside of the housing, and in order to melt and weld the H-shaped steel web in the housing, The above-mentioned problem has been solved by providing an open / close door that opens and closes the door.

  According to the spark scatter prevention box according to claim 2, since the spark generated when fusing and welding the web and the flange of the H-shaped steel or the like installed in the vertical direction is dropped into the casing, Scattering can be reliably prevented.

  Further, in the invention of claim 3 according to the present invention, the casing is in a state in which the left and right wall surface parts fixed to the H-shaped steel flange via the clamping fixture, the H-shaped steel web and the flange protrude from the casing. A pair of double doors that open and close the upper side of the left and right wall surfaces, and a lower wall surface portion that closes the lower side of the left and right wall surfaces in a state where the H-shaped steel web and flange protrude from the housing The problem mentioned above was solved by having the front-and-back wall surface part which closes the front-and-back of the left-and-right wall surface part.

  According to the spark scatter prevention box according to claim 3, the fusing and welding of the flange and the web are not particularly required by the single casing attached to the predetermined portion of the H-shaped steel, without requiring a replacement work between the web side and the flange side. Sparks that are sometimes generated can be dropped into the housing to reliably prevent the sparks from being scattered around.

  Moreover, since it has a pair of double doors that open and close the upper part, it can open either door for fusing / welding work of webs such as H-shaped steel installed in the vertical direction. Can be implemented easily.

  Further, according to the invention of claim 4 according to the present invention, the pair of double-spread type door pieces are arranged so that the upper part of the housing is opened and closed in a state where the H-shaped steel web and the flange protrude from the housing. By providing an H-shaped slit corresponding to the outer shape of the steel plate, the above-described problems were solved.

  According to the spark scattering prevention box according to the fourth aspect, since the H-shaped slit corresponding to the H-shaped steel is provided above the housing, the upper portion of the housing is closed by a pair of double doors. Even in this case, the state in which the H-shaped steel web and the flange protrude from the housing can be maintained.

  When the H-shaped steel flange is melted and welded through the opening window due to the closed state above the casing, the generated spark is dropped into the casing, and the spark is generated from above the casing. It is possible to reliably prevent the occurrence of the situation of scattering.

  Moreover, it becomes possible to move the housing | casing attached to H-shaped steel so that H-shaped steel may be followed, and fusing and welding work in a desired location can be implemented rapidly.

  Similarly, the invention of claim 5 according to the present invention is such that the lower wall surface portion of the housing closes the lower side of the left and right wall surfaces in a state where the H-shaped steel web and flange protrude from the housing. The above-mentioned problem was solved by providing an H-shaped slit corresponding to the outer shape of the above.

  According to the spark scattering prevention box according to claim 5, since the H-shaped slit corresponding to the H-shaped steel is provided in the lower wall surface portion, the state in which the H-shaped steel web and the flange protrude from the casing is maintained. it can.

  When the H-shaped steel flange is melted and welded through the opening window due to the closed state at the lower part of the casing, the generated sparks are dropped into the casing, and the spark is generated from below the casing. It is possible to reliably prevent the occurrence of the situation of scattering.

  Moreover, it becomes possible to move the housing | casing attached to H-shaped steel so that H-shaped steel may be followed, and fusing and welding work in a desired location can be implemented rapidly.

  In addition, in the invention of claim 6 according to the present invention, the left and right wall surfaces fixed to the flange of the H-shaped steel via the clamping fixture are formed wider than the flange of the H-shaped steel, The above-mentioned problems have been solved by forming each of the opening window portions in.

  According to the spark scattering prevention box according to the sixth aspect, the flange such as H-shaped steel installed in the vertical direction can be surely melted and welded through the opening window.

  Further, in the invention of claim 7 according to the present invention, the housing attached to the H-shaped steel is composed of a pair of half-box bodies arranged so as to sandwich the H-shaped steel. In the state which pinched | interposed the shape steel, the subject mentioned above was solved by being mutually connectable via a connector.

  According to the spark scattering prevention box according to the seventh aspect, since the pair of half-box bodies arranged so as to sandwich the H-shaped steel are joined via the coupler, the mounting operation of the housing to the H-shaped steel is performed. Can be implemented quickly.

  In addition, a so-called closed space is created inside the pair of half-boxes attached to the H-shaped steel. For example, when the H-shaped steel flange is melted and welded through the opening window, The generated sparks can be dropped into the closed space to reliably prevent the sparks from being scattered around.

  In addition, in the invention of claim 8 according to the present invention, the half box body is formed by cutting each of the left and right wall surface portions in the central longitudinal direction to form a pair of half wall surface pieces, and the half box body above the pair of half wall surface pieces. A door piece having an H-shaped slit is provided, and a lower half-wall surface piece having a half-H-shaped slit is provided below the pair of half-wall pieces, and the pair of half-wall pieces, the door piece, the lower half The side part of the wall surface piece was closed by the hanging wall surface piece, thereby solving the above-described problem.

  According to the spark scattering prevention box according to claim 8, by joining the half-boxes constituted by the half-wall piece, the door piece, the lower half-wall piece, and the suspended wall piece, A so-called closed space is created inside, for example, when a H-shaped steel flange is melted and welded through an opening window, and sparks generated are dropped into the closed space. Thus, it is possible to reliably prevent the occurrence of a situation where the sparks are scattered outside the joined half box.

  Moreover, since both of a pair of half-boxes are right-and-left symmetrical structures, the manufacturing cost can be reduced.

  Furthermore, in the invention of claim 9 according to the present invention, hanging protrusions are respectively provided at the lower part of the pair of half wall surface pieces constituting the half box, and the pair of half wall surface pieces are provided on the flange of the H-shaped steel. In the addressed state, the above-described problem was solved by fixing the hanging protrusion to the H-shaped steel flange via the clamping fixture.

  According to the spark scattering prevention box according to claim 9, the hanging protrusions at the lower part of the pair of half wall surfaces in any one half box can be fixed to the left and right flanges by the clamping fixture, respectively. Attaching / removing the housing to / from the housing can be performed quickly. In addition, this makes it possible to quickly arrange the opening window portion of the housing so as to face the fusing / welding position of the flange.

  In addition, when attaching the housing to the H-shaped steel, the pair of half-box bodies can be integrated by the connecting tool after the one half-box body is secured by the clamping fixture, so that the housing is attached. Can be implemented more quickly.

  Moreover, invention of Claim 10 which concerns on this invention solved the subject mentioned above because the door piece was attached to the upper part of the hanging wall surface piece which comprises a half box body via the hinge part.

  According to the spark scatter prevention box according to this claim 10, since the opening and closing doors by a pair of door pieces can be opened toward each other on the upper side through the hinge portion, when fusing and welding the web, Fusing and welding operations can be performed easily by simply opening one of the door pieces through the hinge.

  At this time, since the other door piece is closed, it is possible to reliably prevent the sparks from being scattered around by dropping the generated sparks into the casing.

  As described above, according to the present invention, by attaching the housing to a predetermined portion of the H-shaped steel, the generated spark is dropped into the housing and the spark is prevented from being scattered, and the fusing and welding work of the flange at the location is performed. The web can be melted and welded safely.

  With the spark scattering prevention box according to the present invention, it is possible to reliably prevent the spark from being scattered around the building, for example, when a web such as H-shaped steel and a flange are fused and welded.

  That is, in a state where the part to be melted and welded such as H-shaped steel is completely covered by the casing, the casing has an opening window for fusing and welding the flange. The operation of fusing and welding the flange from the outside of the casing can be performed, and sparks generated during this fusing / welding can be dropped into the casing to reliably prevent the sparks from being scattered around.

  Moreover, at the time of fusing and welding of the web, it is possible to easily carry out the fusing and welding of the web by opening one of the pair of double doors. At this time, since the other door piece is closed, it is possible to reliably prevent the sparks from being scattered around by dropping the generated sparks into the casing.

  Furthermore, the drooping projecting portion in one half box of the housing is fixed to the H-shaped steel flange by a clamping fixture, and after fixing by the clamping fixture, the pair of half boxes is integrated by the coupling tool. Since this is possible, the mounting operation of the housing to the H-shaped steel can be performed quickly.

  Also, the housing can be removed easily and quickly.

It is a perspective view which shows the attachment state to the H-shaped steel of a spark scattering prevention box. The outline of the attachment state to the H-shaped steel of a spark scatter prevention box is shown, (a) is a front view, (b) is a top view, (c) is a side view, (d) is a bottom view. It is a perspective view which shows the state which looked at the housing | casing which comprises a spark scatter prevention box from diagonally upward. It is a perspective view which shows the state which looked at the housing | casing which comprises a spark scatter prevention box from diagonally downward. It shows the shape of the casing constituting the spark scatter prevention box, (a) is a front view, (b) is a rear view, (c) is a plan view, (d) is a side view, and (e) is a bottom view. It is. The structure of the half box body of the left side (one side) of a housing | casing is shown, (a) is the perspective view seen from diagonally upward, (b) is the perspective view seen from diagonally downward. The structure of the half box body of the right side (other side) of a housing | casing is shown, (a) is the perspective view seen from diagonally upward, (b) is the perspective view seen from diagonally downward. It shows the attachment state of the housing to the H-shaped steel, (a) is a perspective view of the attachment state of the left half of the housing (one side) seen from obliquely above, (b) is the left side of the housing ( It is the perspective view which looked at the attachment state of the half box body of 1) from diagonally downward. The state which attached the housing | casing to the H-shaped steel is shown, (a) is the perspective view which looked at the state which joined the half box body of the right side (other side) of the housing | casing to the half box body of the left side (one side) from diagonally upward. (B) is the perspective view which looked at the state which joined the half box body of the right side (the other side) of the housing | casing to the half box body of the left side (one side) from diagonally downward. In the state which attached the housing | casing to H-shaped steel, the outline of the state which fuses the flange part of H-shaped steel is shown, (a) is a perspective view of the state which starts fusing of a flange via the opening window part of a housing | casing (B) is a perspective view of the state which completed the fusing of the flange. In the state which attached the housing | casing to H-shaped steel, the outline of the state which fuses the web part of H-shaped steel is shown, (a) opens the door piece of one side (right side) of a housing | casing, and starts fusing of a web. The perspective view of a state, (b) is a perspective view of the state which completed the cutting of the web.

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

<Embodiment>
The spark scatter prevention box according to the present invention is used when fusing and welding an H-shaped steel having flanges F at both ends of a central web W as shown in FIGS. 1 to 5, 10, and 11. To do.

  Specifically, it is comprised by the housing | casing 1 which can cover the predetermined | prescribed part which melts | fuses and welds H-shaped steel completely without a gap. The housing 1 is formed in a rectangular box shape using, for example, a lightweight and fire-resistant material.

  And the spark which generate | occur | produces when fusing and welding H-shaped steel using the gas torch T for fusing etc. is stopped in the housing | casing 1, and the scattering to the periphery of a spark is prevented reliably.

  In the present embodiment, the housing 1 is fixed to a flange F of H-shaped steel via a clamping fixture G.

  Specifically, the housing 1 opens and closes the upper sides of the left and right wall surface portions 2 and 3 in a state where the left and right wall surface portions 2 and 3 and the H-shaped steel web W and the flange F protrude from the housing 1. An open / close door 4 is provided.

  Further, in the state where the H-shaped steel web W and the flange F protrude from the housing 1, the lower side wall surface portion 5 is provided to close the lower side of the left and right wall surface portions 2 and 3.

  Furthermore, the front and rear wall surface portions 6 and 7 are provided to close the front and rear surfaces of the left and right wall surface portions 2 and 3, and have a rectangular box shape as a whole, and a so-called closed space is formed in the housing 1. .

  The opening / closing door 4 of the housing 1 is constituted by a pair of double doors 4A and 4B that are opened in order to melt the H-shaped steel web W in the housing 1. One of the door pieces 4A is attached to the upper portion of the rear wall surface portion 7 of the housing 1 via a hinge portion H, and the other door piece 4B is attached to the upper portion of the front wall surface portion 6 of the housing 1. It is attached via the hinge part H.

  In other words, the pair of double doors 4A and 4B has an outer shape of the H-shaped steel so that the upper portion of the housing 1 is opened and closed when the H-shaped steel web W and the flange F protrude from the housing 1. A corresponding H-shaped slit S is provided.

  In addition, the lower side wall surface portion 5 of the housing 1 corresponds to the H-shaped slit S and is below the left and right wall surface portions 2 and 3 in a state where the H-shaped steel web W and the flange F protrude from the housing 1. Is provided with an H-shaped slit S corresponding to the outer shape of the H-shaped steel. Thereby, it becomes possible to move the housing 1 attached to the H-shaped steel so as to follow the H-shaped steel, and it is possible to quickly perform the fusing / welding operation at a predetermined portion of the H-shaped steel.

  A handle R that is held by an operator by hand is provided near the H-shaped slit S of both door pieces 4A and 4B.

  The left and right wall surface portions 2 and 3 fixed to the H-shaped steel flange F via the clamping fixture G are formed wider than the H-shaped steel flange F, and the left and right wall surface portions 2 and 3 have an opening window 8. Are provided.

  That is, the left and right wall surface portions 2 and 3 are formed wider than the flange F, and a rectangular opening window portion 8 that is long in the horizontal direction is provided near the upper end side of each of the left and right wall surface portions 2 and 3. Through the opening window 8, for example, the right and left flanges F of the H-shaped steel can be melted and welded using a fusing gas torch T or the like.

  Moreover, the housing | casing 1 attached to H-shaped steel is comprised by a pair of half box 1A, 1B arrange | positioned so that H-shaped steel may be inserted | pinched. The pair of half-boxes 1A and 1B can be joined to each other via a connector Q in a state where the H-shaped steel is sandwiched.

  As a result, a so-called closed space is formed inside the pair of half-boxes 1A, 1B attached to the H-shaped steel. For example, the flange F of the H-shaped steel is blown through the opening window 8. By keeping the sparks generated in the case 1 in the casing 1, the sparks are reliably prevented from being scattered around.

  As shown in FIGS. 1 to 5, 6, and 7, the half-box bodies 1 </ b> A and 1 </ b> B cut the left and right wall surface portions 2 and 3 in the central vertical direction. The left pair of half wall surface pieces 2A and 2B are formed through the cutting portion C, and the right pair of half wall surface pieces 3A and 3B are formed.

  That is, the half wall surface pieces 2A and 3A are connected to both sides of the rear wall surface portion 7 in either half box 1A (left side in FIG. 1) through the cutting portion C, and the central rear wall surface portion 7 and both sides The half wall surface pieces 2A and 3A form a substantially U-shaped frame piece.

  In addition, half wall surface pieces 2B and 3B are connected to both sides of the front wall surface portion 6 in the other half box 1B (right side in FIG. 1) through the cutting portion C, and the central front wall surface portion 6 and both sides are connected. The half wall surface pieces 2B and 3B form a substantially U-shaped frame piece.

  As shown in FIGS. 3 and 6, a door piece 4A having a half-H-shaped slit S is provided above the pair of half-wall pieces 2A, 3A constituting one half-box 1A. Below the half wall surface pieces 2A and 3A, a lower half wall surface piece 5A having a half H-shaped slit S is provided. And each side of a pair of half wall surface piece 2A, 3A, door piece 4A, and lower half wall surface piece 5A is closed by the hanging wall surface piece 7A.

  As shown in FIGS. 4 and 7, a door piece 4B having a half H-shaped slit S is provided above the pair of half wall surface pieces 2B and 3B constituting the other half box 1B. A lower half wall surface piece 5B having a half H-shaped slit S is provided below the half wall surface pieces 2B and 3B. And each side of a pair of half wall piece 2B, 3B, the door piece 4B, and the lower half wall piece 5B is closed by the hanging wall piece 6A.

  For example, as shown in FIG. 3, the slit S is provided with a U-shaped notch groove on the side edge of the door piece 4A and an anti-U-shaped notch groove on the side edge of the door piece 4B. In the state where the door pieces 4A and 4B are closed, the notch grooves of the door pieces 4A and 4B are adjacent to each other to form an H-shaped slit S corresponding to the outer shape of the H-type steel. Yes.

  In a state where the H-shaped steel is sandwiched, the half-box 1A composed of the half-wall pieces 2A and 3A, the door piece 4A, the lower half-wall piece 5A, and the suspended wall piece 7A, and the half-wall piece described above 2B, 3B, the door piece 4B, the lower half wall piece 5B, and the half box 1B constituted by the hanging wall piece 6A are joined.

  Then, in a state where the H-shaped steel is sandwiched between the half-boxes 1A and 1B, the pair of half-wall pieces 2A and 2B are coupled to each other by a coupling tool Q such as a buckle type provided across the both. The pair of half wall pieces 3A and 3B are connected to each other by, for example, a buckle type coupling tool Q provided across both sides, so that the pair of front and rear half box bodies 1A and 1B are integrated. It becomes the housing | casing 1 by which the space of what is called a closed state is formed inside.

  At this time, the lower half wall surface pieces 5A and 5B are formed as a substantially rectangular box-shaped casing 1 by combining a pair of half-box bodies 1A and 1B, thereby closing the lower side of the casing 1 below. Further, both the suspended wall surface pieces 6A and 7A are closed to the front and rear of the housing 1 by combining the pair of half-boxes 1A and 1B to form a substantially rectangular box-shaped housing 1. The front and rear wall portions 6 and 7 are formed.

  A pair of half wall surface pieces 2A and 3A constituting one half box body 1A (left side in FIG. 1) and a pair of half wall surface pieces 2B and 3B constituting half box body 1B are respectively provided with hanging protrusions. 9, for example, in a state where the pair of half wall surface pieces 2A, 3A of one half box 1A are respectively addressed to the flanges F on the left and right sides of the H-shaped steel from the left side, The hanging protrusion 9 is fixed to a flange F of H-shaped steel via a sandwiching fixture G such as a screwed sand type (see FIG. 8).

  In the state where the pair of half wall surface pieces 2B and 3B of the other half box 1B (right side in FIG. 1) are respectively addressed to the flanges F on the left and right sides of the H-shaped steel from the right side, for example, screwing The drooping protrusion 9 may be fixed to the flange F of the H-shaped steel through a sandwiching fixture G such as a sand type.

  The connector Q is constituted by hooking levers provided at two upper and lower positions on one side and hanging parts provided at two upper and lower positions on the other side through the respective cutting parts C of the left and right wall surface parts 2 and 3. Yes.

  Now, the case 1 is assembled to the H-shaped steel by joining the cut portions C of the pair of half-boxes 1A and 1B so as to sandwich the H-shaped steel, and then engaging the hanging lever with the hanging portion. .

  Thus, when attaching the housing 1 to the H-shaped steel, the pair of half-box bodies 1A and 1B can be integrated by the connecting tool Q after the half-box body 1A on one side is fixed by the clamping fixture G. Therefore, the attachment work of the housing | casing 1 can be implemented more rapidly.

  The one door piece 4A described above is attached to the upper part of the hanging wall piece 7A (rear wall surface part 7) constituting one half box 1A via the hinge part H, and the other door piece described above. 4A is attached to the upper part of the hanging wall surface piece 6A (front wall surface portion 6) constituting the other half box 1B via a hinge portion H.

  Below, the attachment process of the housing | casing 1 which comprises the spark scattering prevention box which concerns on this invention is demonstrated in detail based on FIG.8 and FIG.9.

  First, as shown in FIGS. 8A and 8B, in the state where the half wall surface pieces 2A and 3A of the half box 1A on one side are addressed to the flange F of the H-shaped steel, the half wall surface pieces 2A, Each hanging protrusion 9 of 3A is fixed to the flange F via the clamping fixture G.

  Then, as shown in FIGS. 9A and 9B, the other half box 1B is joined to the one half box 1A so as to sandwich the H-shaped steel. Link. Thus, the housing 1 is formed in which a so-called closed space is formed inside the pair of half-boxes 1A, 1B.

  Next, the fusing process using the housing 1 constituting the spark scattering prevention box according to the present invention will be described in detail with reference to FIGS.

  First, as shown in FIGS. 10 (a) and 10 (b), the flange F is blown out by using, for example, a fusing gas torch T or the like through the opening window 8 of the left wall surface 2 of the housing 1. This operation is similarly performed on the opening window 8 of the right wall 3 on the opposite side of the housing 1.

  Next, as shown in FIGS. 11A and 11B, the door piece 4B on the rear wall surface portion 7 side is closed, and the door piece 4A is opened upward via the hinge portion H on the front wall surface portion 6 side. Then, a part of the housing 1 is opened, and one side surface of the web W is melted using, for example, a gas torch T for melting.

  Alternatively, the door piece 4A on the front wall surface portion 6 side is closed, the door piece 4B is opened upward via the hinge portion H of the rear wall surface portion 7, and a part of the housing 1 is opened. The side surface is melted using, for example, a melting gas torch T or the like.

  As described above, the open / close door 4 alternately opens and closes the pair of door pieces 4A and 4B in a state where the H-shaped steel web W and the flange F protrude, thereby alternately switching the one side surface and the other side surface of the web W. Fusing to.

  Note that, depending on the thickness of the web W, there may be a case where only fusing from one side is sufficient. In such a case, fusing from the other side is not performed.

  Moreover, although not illustrated one by one, the present invention is implemented with various modifications within a range not departing from the gist thereof.

  The present invention, for example, a spark scattering prevention box that reliably prevents sparks from being scattered around by dropping sparks generated in a building, for example, when melting or welding H-shaped steel or the like, into a casing. It is widely used in the field.

W ... Web F ... Flange G ... Holding fixture Q ... Connecting tool R ... Handle S ... H-shaped slit H ... Hinge part C ... Cutting part T ... Fusing gas torch 1 ... Housing 1A ... Half box 1B ... Half box Body 2 ... Left wall part 2A ... Semi wall face piece 2B ... Semi wall face piece 3 ... Right wall face part 3A ... Semi wall face piece 3B ... Semi wall face piece 4 ... Opening / closing door 4A ... Door piece 4B ... Door piece 5A ... Lower wall face part 5B ... Lower wall surface portion 6 ... Front wall surface portion 6A ... Vertical wall surface piece 7 ... Rear wall surface portion 7A ... Vertical wall surface piece 8 ... Opening window portion 9 ... Hanging protrusion

Claims (10)

In order to prevent the sparks generated when fusing and welding the H-shaped steel having flanges at both ends of the web, the spark-scattering prevention box comprises a casing that is attached to cover a predetermined portion of the H-shaped steel.
The housing attached to the H-shaped steel includes an opening window portion for fusing and welding the H-shaped steel flange from the outside of the housing, and a part of the housing for fusing and welding the H-shaped steel web in the housing. A spark scatter prevention box characterized by an open / close door that opens and closes. Sparks composed of a housing that is provided with flanges at both ends of the web and is attached so as to cover predetermined portions of the H-shaped steel in order to prevent the sparks generated when fusing and welding the H-shaped steel installed in the vertical direction. A splash-proof box,
The housing attached to the H-shaped steel includes an opening window portion for fusing and welding the H-shaped steel flange from the outside of the housing, and in order to melt and weld the H-shaped steel web in the housing, A spark scatter prevention box characterized by an open / close door that opens and closes.   The case has a left and right wall surface portion fixed to the H-shaped steel flange via a clamping fixture, and a double door opening that opens and closes the upper side of the left and right wall surface portion when the H-shaped steel web and flange protrude from the housing. A pair of door pieces, a lower wall surface portion that closes the lower side of the left and right wall surface portions, and a front and rear wall surface portion that closes the front and rear of the left and right wall surface portions in a state where the H-shaped steel web and flange protrude from the housing The spark scatter prevention box according to claim 1 or 2.   A pair of double doors is provided with an H-shaped slit corresponding to the outer shape of the H-shaped steel so that the upper portion of the housing is opened and closed in a state where the H-shaped steel web and the flange protrude from the housing. The spark scattering prevention box according to claim 3.   The lower side wall surface portion of the housing is provided with an H-shaped slit corresponding to the outer shape of the H-shaped steel so as to close the lower part of the left and right wall surfaces in a state where the H-shaped steel web and the flange protrude from the housing. Item 4. A spark scatter prevention box according to item 3.   The left and right wall surface portions fixed to the H-shaped steel flange via the clamping fixture are formed wider than the H-shaped steel flange, and an opening window is provided on each of the left and right wall surface portions. The spark scattering prevention box described.   The housing attached to the H-shaped steel is constituted by a pair of half-boxes arranged so as to sandwich the H-shaped steel, and the pair of half-boxes is interposed via a connector in a state of sandwiching the H-shaped steel. The spark scatter prevention box according to any one of claims 1 to 5, which can be joined to each other.   The half box body includes a door piece having a pair of half wall pieces cut by cutting each of the left and right wall portions in the central longitudinal direction, and having a half H-shaped slit above the pair of half wall pieces. A lower half wall piece provided with a half H-shaped slit below the half wall piece, and a pair of half wall pieces, a door piece, and a lower half wall piece side are closed by a hanging wall piece. The spark scattering prevention box according to claim 7.   A hanging protrusion is provided at each of the lower portions of the pair of half-wall pieces constituting the half-box body, and the pair of half-wall pieces are addressed to the flange of the H-shaped steel via a clamping fixture. The spark scattering prevention box according to claim 8, wherein the drooping protrusion is fixed to the flange of the H-shaped steel.   The spark scatter prevention box according to claim 8, wherein the door piece is attached to an upper portion of the hanging wall piece constituting the half box through a hinge portion.

Images