JP2009264425A - Pivot mount and its connection part structure, and opening preventive member structure to be used for pivot mount and its connection part structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the both-side opening of opening preventive hardware materials due to its deformation even when a great load operates on a pivot mount where a hanging bolt is inserted through a clearance between the webs of lip grooved steels. <P>SOLUTION: The opening preventive hardware materials 23-1, 23-2 are provided for the pivot mount 21 where the hanging bolt 25 is inserted from a building side through the clearance 22 between the webs of the right and left lip-grooved steels 21a, 21b. The opening preventive hardware material 23-1 is hat-shaped in view from the longitudinal direction of the pivot mount 21 and externally suitable for the upper part of the lip-grooves steel 21a, and the opening preventive hardware material 23-2 is inverted-hat-shaped in view from the longitudinal direction of the pivot mount 21 and externally suitable for the lower part of the lip-grooves steel 21a. The hanging bolt 25 passes through top portions and bottom portions of the opening preventive hardware materials 23-1, 23-2. Still, the opening preventive hardware materials 23-1. 23-2 are fastened to each other at their flanges 23-1Y, 23-2Y formed on both cross sides with a bolt 41. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a suspension base, a connection part structure of the suspension base, and an opening member structure used in the suspension base and the connection structure of the suspension base.

  For example, in a clean room, equipment such as air-conditioning ducts, air-conditioning pipes, electric pipes, etc. are arranged on the back of the ceiling, etc., and the gantry that supports the pipes is attached to the suspending gantry via a suspension bolt. It is supported. Thus, an example of a conventional suspension base is shown in FIGS. In the figure, reference numeral 1 denotes a suspension base, and the suspension base 1 has a cross-sectional shape in which the web side faces each other with a gap 2 and the lip side is arranged side by side so as to be separated from each other and extend in the longitudinal direction. A substantially C-shaped lip groove steel 1a, 1b and a plurality of sets of opening stoppers 3-1 and 3-2 which are arranged at predetermined intervals in the longitudinal direction of the lip groove steel 1a and make a pair in the vertical direction. ing. Opening stoppers 3-1 and 3-2 are provided for preventing the left and right lip groove steels 1a and 1b from opening left and right and holding the gap 2 formed between the opposing webs at a constant interval. It is. The reason why the lip groove steel 1a is used for the suspension base 1 is to reduce the weight of the suspension base 1, and the abdomen of the lip groove steel 1a is the web, the upper and lower chords are the flanges, and the opposite side of the abdomen. A vertical member having a short vertical length on the opening side is called a lip.

  An opening stopper 3-1 (see FIGS. 10 and 11 to 14) is a section having a predetermined length in the longitudinal direction of the suspension base 1, and is an inverted U shape when viewed in the longitudinal direction of the suspension base 1. The upper and lower lip channel steels 1a and 1b are covered with the upper flanges and the outer sides of the upper lips located on the left and right outer sides of the lip channel steels 1a and 1b are covered. It is fitted. Further, the opening stopper 3-2 (see FIGS. 10 and 11 to 14) is a section having a predetermined length in the longitudinal direction of the suspension base 1 and is U-shaped as viewed in the longitudinal direction of the suspension base 1. It is arranged in a letter shape and covers the lower surfaces of the lower flanges of the left and right lip groove steels 1a and 1b, and covers the outer sides of the lower lips located on the left and right outer sides of the lip groove steels 1a and 1b. It is fitted.

  Suspension bolt insertion holes 4-1 and 4-2 are formed so as to penetrate up and down in the flat part at the top or the flat part at the bottom of the above-mentioned stoppers 3-1 and 3-2. Thus, the suspension bolt insertion hole 4-1 of the predetermined upper side stopper 3-1 and the gap 2 formed between the opposing webs of the left and right lip groove steels 1a and 1b, and the upper side In the suspension bolt insertion hole 4-2 of the lower-side stopper metal fitting 3-2 corresponding to the stopper metal fitting 3-1, a suspension bolt 5 that is suspended at the upper end of the ceiling material or the like on the building side is inserted. Yes.

  A washer 6 is fitted to a portion of the lower end of the suspension bolt 5 that protrudes downward from the opening stopper 3-2, and two nuts 7 are screwed together so as to be positioned below the washer 6. A nut 8 is screwed onto a portion of the bolt 5 that protrudes upward from the metal stopper 3-1.

  Thus, when the nut 7 or 8 that is screwed to the suspension bolt 5 is tightened, the upper opening stopper 3-1 is externally fitted to the upper surfaces of the left and right lip groove steels 1a and 1b and Covers the upper surface of the side flange and covers the outer side of the upper lip located on both outer sides of the lip channel steels 1a and 1b, and the lower opening stopper 3-2 is the lower surface of the left and right lip channel steels 1a and 1b. To cover the lower surface of the lower flange and to cover the outer side of the lower lip located on both outer sides of the lip channel steel 1a, 1b. As a result, the lip channel steel 1a, 1b is fixed in a state where the web is close to the outer peripheral side of the suspension bolt 5 and the web is substantially in contact with the outer periphery of the suspension bolt 5, and the suspension base 1 is suspended and supported by the suspension bolt 5. The

  In the opening stoppers 3-1 and 3-2 (see FIGS. 10, 11 and 15) to which the suspension bolt 5 is not attached, suspension bolts 9 for suspending equipment such as various pipes are suspended at the lower end. It can be installed. That is, the suspension bolt insertion hole 4-2 of the predetermined opening stopper metal piece 3-2 on the lower side, the gap 2 formed between the opposing webs of the left and right lip groove steels 1a and 1b, and the predetermined value on the upper side In the suspension bolt insertion hole 4-1 of the opening stopper 3-1, a suspension bolt 9 that is supported by the opening stopper 3-2 and hangs downward from the suspension base 1 is inserted and fixed. ing.

  A washer 10 is fitted to a portion of the upper end of the suspension bolt 9 that protrudes upward from the opening stopper 3-1, and two nuts 11 are screwed so as to be positioned above the washer 10. A nut 12 is screwed into a portion of the bolt 9 that protrudes downward from the metal stopper 3-2.

  Thus, when the nut 11 or 12 that is screwed into the suspension bolt 9 is tightened, the upper opening stopper 3-1 is externally fitted to the upper portions of the left and right lip groove steels 1a and 1b to Covers the upper surface of the side flange and covers the outer side of the upper lip located on both outer sides of the lip channel steels 1a and 1b, and the lower opening stopper 3-2 is the lower part of the left and right lip channel steels 1a and 1b. To cover the lower surface of the lower flange and to cover the outer side of the lower lip located on both outer sides of the lip channel steel 1a, 1b. As a result, the lip groove steels 1a and 1b are fixed in the state of being in close contact with the outer periphery of the suspension bolt 9 and substantially in contact with the outer periphery of the suspension bolt 9, and the suspension bolt 9 is fixed by the two right and left lip groove steels 1a and 1b. It is sandwiched and supported.

  At opposite ends of the adjacent suspension bases 1 and 1, a pair of opening stoppers 13-1 and 13-2 (see FIGS. 10 and 16 to 18) that are paired up and down, which also serve as a connecting member for connecting the two. ) Is provided.

  In other words, the stopper metal 13-1 has a section shape having a predetermined length in the longitudinal direction of the suspension base 1 and is longer than the stopper metal 3-1 and is viewed in the longitudinal direction of the suspension base 1. In addition to covering the upper surface of the upper flanges of the lip groove steels 1a, 1b that are arranged side by side and are adjacent to each other in the longitudinal direction, the left and right sides of the lip groove steels 1a, 1b are formed in an inverted U shape. It is externally fitted to cover the outside of the upper lip on both sides.

  Further, the opening stopper 13-2 is in the shape of a section having a predetermined length in the longitudinal direction of the suspension base 1, and is longer than the opening stopper 3-2, as viewed in the longitudinal direction of the suspension base 1. It is arranged in a U shape, and covers the lower surface of the lower flange of the lip groove steels 1a, 1b that are juxtaposed side by side in the longitudinal direction and both the left and right sides of the lip groove steels 1a, 1b. It is externally fitted to cover the outside of the lower lip on the outside.

  A plurality of bolt insertion holes 14-1 and 14-2 (four in the embodiment, each at a predetermined interval in the longitudinal direction) are formed on the flat portions of the top or bottom of each of the above-described opening stoppers 13-1 and 13-2. A total of 8) are drilled up and down. Thus, of the four bolt insertion holes 14-1, two of the adjacent suspension bases 1 are drilled in the opening stopper 13-1 located on one suspension base 1 side, and the remaining Two are drilled in the opening stopper 13-1 located on the other suspension base 1 side.

  Of the four bolt insertion holes 14-2, two are drilled in the opening stopper 13-2 located on the side of one suspension base 1 of the adjacent suspension bases 1, and the remaining two Is drilled in the opening stopper 13-2 located on the other suspension base 1 side.

  The bolt insertion hole 14-1 of the stopper metal 13-1, the gap 2 formed between the opposing webs of the left and right lip groove steels 1a, 1b, and the suspension of the predetermined stopper metal 13-2 on the lower side The fixing bolt 15 is inserted through the bolt insertion hole 14-2.

  Thus, a washer 16 is fitted and a nut 17 is screwed into a portion of the fixing bolt 15 protruding upward from the opening stopper 13-1, and the fixing bolt 15 protrudes below the opening stopper 13-2. A washer 18 is fitted and a nut 19 is screwed into the part.

  When the nut 17 or 19 is tightened, the upper opening stopper 13-1 is externally fitted to the upper portions of the left and right lip channel steels 1a and 1b at the end of the suspension base 1 adjacent in the longitudinal direction. It covers the upper surface of the side flange and covers the outer side of the upper side lip located on both outer sides of the lip channel steel 1a, 1b, and the lower stopper metal fitting 3-2 is the end of the suspension base 1 adjacent in the longitudinal direction. It is fitted on the lower part of the left and right lip groove steels 1a, 1b in the part to cover the lower surface of the lower flange, and covers the outer side of the lower lip located on both outer sides of the lip groove steels 1a, 1b. As a result, the webs of the lip groove steels 1a and 1b are fixed in a state where they are close to the outer peripheral side of the fixing bolt 15 and substantially in contact with the outer periphery of the fixing bolt 15, and the adjacent suspension bases 1 are connected to each other.

  The prior art document does not have a support fitting corresponding to a suspension base, but there is Patent Document 1 as an example of a support fitting for piping. In Patent Document 1, a rail configured by supporting a pair of symmetrically arranged L-shaped steels in parallel at a constant interval, and first and second rails slidably provided on the upper and lower surfaces of the rail. A metal plate, a gap between the rails and a suspension bolt arranged in a state where the bolt holes provided in the first and second metal plates are vertically penetrated, a nut for pressing the first metal plate against the rail from above, It has a nut that presses the second metal plate against the rail from below, and the first and second metal plates are formed with a pair of left and right engaging portions that prevent the L-shaped steel from spreading left and right. .

  Moreover, there exists patent document 2 as elongate body support metal fittings, such as piping. In Patent Document 2, when a long body to be supported is received from the opening into the receiving space of the receiving portion, the lid member is opened and closed in a direction different from the receiving direction of the long body, and the supported length The scale is kept from coming off.

Furthermore, there exists patent document 3 as a piping support tool. In Patent Document 3, the hook is connected to a receiving portion for receiving and supporting a pipe, and is hooked to a hook for suspending the receiving portion by straddling the fixing portion and locked to a locked portion of the fixing portion. A locking tool for preventing the detachment is attached.
Japanese Patent Laid-Open No. 8-200533 JP-A-8-121655 Japanese Utility Model Laid-Open No. 4-116082

  In the case of the suspension base 1 shown in FIGS. 10 to 18, generally, the gap 2 between the webs of the left and right lip groove steels 1a and 1b is widened, and the suspension base 1 is suspended from the ceiling side. In order to prevent the suspension bolt 5 from falling off or the suspension bolt 9 suspended from the suspension base 1 from falling off the suspension base 1, a spacer is inserted into the gap 2 and the spacer is welded to the lip channel steel 1a. It is possible to do.

  However, dust is generated by welding work at the time of construction of the suspension base 1 and this dust generation is not preferable because the indoor environment may be contaminated when the installation location of the suspension base 1 is a clean room. For this reason, in the suspension base 1 shown in FIGS. 10 to 18, as shown in the drawing, a suspension bolt 5 is provided in the gap 2 in order to provide a structure that does not require welding at the time of on-site construction and to keep the gap 2 at a constant interval. , 9 is inserted to provide a function as a spacer, and the opening stoppers 3-1 and 13-1 are externally fitted to the upper flange upper surface and the upper lip outer surface of the left and right lip groove steels 1a and 1b, Further, the opening stoppers 3-2 and 13-2 are externally fitted to the lower flange lower surface and the lower lip outer surface of the left and right lip groove steels 1a, 1b, and the lip portions of the lip groove steels 1a, 1b are fitted. With the vertical members 3-1X, 3-2X, 13-1X, 13-2X (see FIGS. 12, 15, and 17) of the metal fittings 3-1, 3-2, 13-1, and 13-2 for opening the outside. Hold down and prevent the gap 2 between the left and right lip channel steel 1a, 1b from widening Yes.

  However, in the suspension base 1 of FIGS. 10 to 18, when a load such as equipment supported by the suspension bolt 9 as shown in FIG. 15 or the like is applied to the suspension base 1, or the lip groove steel The following phenomenon occurs when the materials 1a and 1b and the metal stoppers 3-1, 3-2, 13-1, and 13-2 are bad or the construction accuracy is poor. That is, an excessive load applied to the suspension bolt 9 pulls the nut 11 above the suspension bolt 9 downward, so that the force concentrates on the lower portion of the washer 10 located above the lip groove steels 1a and 1b. A moment is generated to rotate only the web side while leaving the upper lip side of the steel 1a, 1b. Due to this rotational moment, a large moment toward the outside acts on the lower lip side of the lip channel steel 1a, 1b. In the suspension base 1, the large moment force toward the outside is resisted by the opening shown in FIGS. 12, 15, and the like fitted on the lower flange lower surface and the lower lip outer surface of the lip groove steel 1 a, 1 b. The stopper 3-2 is mainly responsible.

  However, with the retaining clasp 3-2 having substantially the same thickness as the lip groove steels 1a and 1b, the bent portion of the outer fitting portion of the lower lip outer surface undergoes a plastic deformation that releases the bending without being gathered by a large moment force. It will occur. Further, when the lower flanges of the lip groove steels 1a and 1b are opened to the outside, this time the fittings 3 shown in FIG. 12 and the like are fitted on the upper flange upper surface and the upper lip outer surface of the lip groove steels 1a and 1b. -1 is pushed up by the upper part of the upper lip of the lip channel steel 1a, 1b, and is bent like an inverted letter C with the end of the nut 8 as a fulcrum. Therefore, when the lip groove steels 1a, 1b, the opening stoppers 3-1, 3-2, etc. are deformed as shown in FIG. 13 and the opening stoppers 3-1, 3-2, etc. are deformed, the suspension base 1 The gap 2 between the webs of the left and right lip groove steels 1a, 1b is widened. As a result, the lip groove steels 1a, 1b are dropped from the suspension bolt 5, or the suspension bolt 9 is removed from the suspension base 1 As a result, there is a risk of accidents in which equipment such as piping falls.

  In the case of Patent Document 1, the metal pieces are divided into upper and lower parts, and the upper and lower metal pieces perform the same functions as the metal stoppers 3-1 and 3-2 shown in FIGS. For this reason, if the metal piece is deformed, the rail may come off from the metal piece, and the rail may extend down and the pipe may drop downward. Note that Patent Documents 2 and 3 relate to members that directly support piping, and are not directly related to the suspension base in FIGS. 10 to 18.

  In view of the above circumstances, the present invention is applicable to a case where a large load is applied to a suspension base in which a suspension bolt is inserted into a gap between the webs of the left and right lip groove steels arranged side by side. Even if the material of the steel or lip channel steel is not good or the construction accuracy is poor, make sure that the hardware is not deformed or left and right so that the equipment such as the suspension base and piping can be installed. It is an object of the present invention to provide a suspension base that is prevented from falling off, a connection portion structure of the suspension base, and a stopper structure that is used for the suspension base and the connection structure of the suspension base. .

The suspension base of claim 1 of the present invention is a suspension base that is interposed in the middle between the building side and the equipment in order to suspend and support the equipment from the building side of the building,
The suspension base is
Left and right shaped steel members arranged side by side with a gap between opposing webs;
A plurality of locking members that are arranged at predetermined intervals in the longitudinal direction of the structural steel member and are externally fitted to the upper outer periphery of the left and right structural steel members;
A plurality of locking members that are arranged at predetermined intervals in the longitudinal direction of the structural steel member and are fitted on the outer periphery of the lower side of the left and right structural steel members to form a pair with the locking member on the upper side; With
In the suspension base,
It passes through the top of the upper side locking member and the bottom of the lower side locking member and is inserted into the gap between the left and right shaped steel members so that the upper and lower positions of the upper side locking member and the lower side are opened. A suspension bolt fixed to the stop member is provided,
The upper side stopper member and the lower side stopper member are bolted via flanges provided on both sides in the width direction.

  In the suspension base frame according to claim 2 of the present invention, the outer diameter of the suspension bolt and the gap between the left and right structural steel members are substantially the same size, and the suspension bolt is the same as that of the left and right structural steel members. It is sandwiched between the left and right structural steel members, penetrating through the upper locking member fitted on the outer periphery of the upper side and the lower locking member fitted on the outer periphery of the lower side of the left and right structural steel members. In the suspension base of claim 3, the suspension bolt is at least a first suspension bolt among the first suspension bolt supported on the building side or the second suspension bolt supporting the equipment. 5. The suspension base according to claim 4, wherein the structural steel member is a light-weight shaped steel that is vertically symmetric when the web is arranged vertically, and the structural steel member according to claim 5 is provided. The cross-sectional shape of the upper opening prevention member is a hat shape when viewed in the longitudinal direction The cross-sectional shape of the lower opening member is formed in an inverted hat shape. In the suspension base of claim 6, the top portion of the upper opening member and the bottom portion of the lower opening member are formed. Open the upper side by screwing nuts into the top upper surface of the upper locking member on the upper side of the suspension bolt and the bottom lower surface of the lower locking member that penetrated and inserted into the gap between the left and right structural members. When the stopper member is externally fitted to the upper outer periphery of the left and right structural steel members, and the lower side stopper member is externally fitted to the lower outer periphery of the left and right structural steel members, and when the nuts are fastened, An inter-flange gap is formed between the flange of the locking member and the flange of the lower locking member.

The connection structure of the suspension base according to claim 7 of the present invention is:
In the gap between the opposing webs of the left and right shaped steel members, a plurality of the first suspension bolts supported by the building or the second suspension bolts supporting the equipment are inserted through at least the first suspension bolts. It is a connection part structure of a suspension base that connects the suspension base at the opposite longitudinal ends,
In the connection part of the suspension base,
An upper-side outer periphery of the left and right section steel members of one suspension base, and an anti-opening member externally fitted to the upper-side outer periphery of the left and right shape steel members of another suspension base that is adjacent to the one suspension base ,
The lower end outer periphery of the left and right structural steel members of the one suspension base and the opening prevention member fitted on the lower outer periphery of the left and right shape steel members of the other suspension base adjacent to the one suspension base. Is provided,
The upper side and lower side locking members are connected between the webs of the left and right structural steel members through the tops of the upper side locking members and the bottoms of the lower side locking members in both suspension bases to be connected. It is fastened with a fixing bolt inserted in
The upper locking member and the lower locking member are fastened by bolts at flanges formed on both sides of each locking member in the width direction.

  In the connecting structure of the suspension base according to claim 8 of the present invention, the outer diameter of the fixing bolt and the gap between the webs of the left and right shaped steel members are substantially the same size, and the fixing bolt is The left and right shape steels penetrate the upper opening prevention member fitted on the outer periphery on the upper side of the left and right shape steel members and the lower opening prevention member fitted on the lower side outer periphery of the left and right shape steel members. In the connecting structure of the suspension base frame according to claim 9, the structural steel member is inserted vertically between the webs of the members when the web is arranged vertically. In the connecting structure of the suspension base according to claim 10, the cross-sectional shape of the upper side stopper member is formed in a hat shape when viewed in the longitudinal direction of the shape steel member. The cross-sectional shape of the lower side stopper member is formed in an inverted hat shape, In the connection structure of the suspension base 1, the upper side of the suspension bolt inserted through the gap between the left and right shaped steel members through the top of the upper side stopper member and the bottom of the lower side stopper member. A nut is screwed onto the top surface of the top of the locking member and the bottom surface of the bottom of the locking member on the lower side, so that the upper locking member is externally fitted to the upper outer periphery of the left and right shaped steel members and the lower side When the locking member is externally fitted to the outer periphery of the lower part of the left and right shaped steel members and the nuts are fastened, a flange is provided between the flange of the upper locking member and the flange of the lower locking member. A gap is formed.

In the suspension structure of the twelfth aspect, in the suspension base, a bolt hole through which a fixing bolt inserted through a gap formed between the webs of the steel members facing left and right passes is formed at the top, and the left and right A locking member that is externally fitted to the outer periphery of the upper portion of the steel member;
In the suspension base, a bolt hole through which a fixing bolt inserted through a gap formed between the webs of the structural steel members facing left and right passes is formed at the bottom, and the outer periphery on the lower side of the left and right structural steel members A locking member that is externally fitted to,
Upper and lower flanges are provided on both sides in the width direction of the upper and lower opening prevention members and fastened with bolts.

  In the opening preventing structure of claim 13, when viewed in the longitudinal direction of the shaped steel member, the cross-sectional shape of the upper opening preventing member is formed in a hat shape, and the sectional shape of the lower opening preventing member is an inverted hat shape. In the opening preventing structure according to claim 14, the suspension bolt inserted through the gap between the left and right structural steel members through the top of the opening preventing member on the upper side and the bottom of the opening preventing member on the lower side is formed. While nuts are screwed onto the top upper surface of the upper side locking member and the bottom lower surface of the lower side locking member, respectively, the upper side locking member is externally fitted to the upper outer periphery of the left and right structural members. When the lower side locking member is fitted on the outer periphery of the lower side of the left and right structural members and the nuts are fastened, the gap between the flange of the upper side locking member and the flange of the lower side locking member There is a gap between the flanges. To have.

According to the suspension base of claims 1 to 14 of the present invention, the connection structure of the suspension base, and the opening member structure used in the connection structure of the suspension base and the suspension base, the following Various excellent effects can be obtained.
I) The upper and lower locking members are not only fitted to the upper and lower outer periphery of the structural steel member and fixed to the structural steel member, but also on both sides of the upper and lower locking members in the width direction. The opposed flanges are fastened integrally with bolts, and there is a gap between the upper and lower flanges, so the tightening the bolts tightens the locking member more firmly to the suspension base. The
II) For this reason, in the suspension base frame, an excessive load applied by the equipment provided under the suspension bolt pulls the nut at the top of the suspension bolt downward, so that the nuts and washers located above the two structural steel members Due to the moment when the force concentrates on the lower part and the lower part of the web of the two structural steel members rotates outward, a large moment force is exerted outward on the lower outer end of the structural steel member. On the other hand, the anti-opening member forms a ring and can be resisted by a tensile stress such as the anti-opening member itself or a bolt. This tensile stress becomes a very large force as compared with the case of the conventional plastic deformation resistance only at the bent portion of the lower fitting portion of the opening stopper member. Therefore, even if the load applied to the suspension base and the locking member is large, the locking member can sufficiently withstand the load. Therefore, the locking member is not deformed, and the left and right steel As a result, there is no gap between the members, and as a result, the suspension base is dropped from the suspension bolt supported on the building side, or the suspension bolt that is suspended on the suspension base and supports equipment such as piping is provided. It can be prevented from falling off.
III) In the portion of the suspension bolt on which the suspension base is suspended, the upper and lower opening prevention members are integrally fastened by bolts via the flanges, and the strength has been sufficiently strengthened. Therefore, the suspension base frame is simple with a reduced number of parts, and the cost is low.
IV) When the suspension base is long and connects a plurality of sets of suspension bases, it is possible to reliably connect the suspension bases adjacent to each other in the longitudinal direction because of the use of a locking member that is also used as a connecting member. And also in this connection part, it can prevent that the opening prevention member does not deform | transform and the clearance gap between the left and right shaped steel members of a suspension frame becomes large.
V) From the above, the improvement of the reliability of the suspension base becomes remarkable.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIGS. 1-9 is an example of the form which implements this invention, The suspension base 21 is arranged in the left-right direction so that the web side may oppose each other with a gap 22 and the lip side separates in the longitudinal direction. The extending lip groove steels 21a and 21b having a substantially C-shaped cross section and a plurality of lip groove steels 21a and 21b which are arranged at predetermined intervals (for example, 2 m intervals) in the longitudinal direction and make a pair in the vertical direction. A set of opening stoppers 23-1, 23-2 is provided. The stoppers 23-1 and 23-2 are for preventing the left and right lip groove steels 21a and 21b from opening left and right and holding the gap 22 formed between the opposing webs at a constant interval. is there. The reason why the lip groove steels 21a and 21b are used for the suspension base 21 is to reduce the weight as in the case of the conventional suspension base, and the names of the parts of the lip groove steel are the same as the conventional ones. is there.

  The opening stopper 23-1 (see FIGS. 1 and 2 to 4) has a section shape having a predetermined length in the longitudinal direction of the suspension base 21, and has a hat shape when viewed in the longitudinal direction of the suspension base 21. It is formed and covers the upper surfaces of the upper flanges of the left and right lip groove steels 21a and 21b, and is externally fitted to cover the outer sides of the upper lips located on the left and right outer sides of the lip groove steels 21a and 21b. Further, the vertical members 23-1X on the left and right sides in the width direction of the opening stopper 23-1 extend downward from the lower end of the lip, and outward in the width direction at the lower ends of the vertical members 23-1X. A horizontally projecting flange 23-1Y is formed.

  The opening stopper 23-2 (see FIGS. 1 and 2 to 4) is in the shape of a section having a predetermined length in the longitudinal direction of the suspension base 21 and is shaped like a reverse hat when viewed in the longitudinal direction of the suspension base 21. And is fitted so as to cover the lower surfaces of the lower flanges of the left and right lip groove steels 21a and 21b and to cover the outer sides of the lower lips located on the left and right outer sides of the lip groove steels 21a and 21b. Further, the vertical members 23-2X on the left and right sides in the width direction of the opening stopper 23-2 extend upward from the upper end of the lip, and the upper end of the vertical member 23-2X has an outer side in the width direction. A flange 23-2Y projecting horizontally is formed.

  Suspension bolt insertion holes 24-1 and 24-2 are perforated in the top or bottom plane portions of the above-described opening stoppers 23-1 and 23-2 so as to penetrate vertically. -A gap 22 formed between the suspension bolt insertion hole 24-1 of the predetermined opening stopper 23-1 on the upper side and the webs opposed to the left and right lip groove steels 21a, 21b, In addition, a suspension bolt 25 that hangs down with its upper end fixed to a beam member or the like on the building side is inserted into a suspension bolt insertion hole 24-2 of a predetermined opening stopper 23-2 on the lower side.

  A washer 26 is fitted to a portion of the lower end of the suspension bolt 25 that protrudes downward from the opening stopper 23-2, and two nuts 27 are screwed so as to be positioned below the washer 26. A nut 28 is screwed into a portion of the bolt 25 that protrudes upward from the metal stopper 23-1.

  Bolt holes 40-1 and 40-2 are formed in the flanges 23-1Y and 23-2Y of the opening stoppers 23-1 and 23-2 so as to penetrate vertically, and the bolt holes 40-1 and 40-2 are formed. -2 is inserted with a bolt 41. A nut 42 is screwed onto the lower end of the bolt 41 that protrudes downward from the metal stopper 23-2.

  Thus, when the nut 27 or 28 screwed to the suspension bolt 25 is tightened, the upper opening stopper 23-1 is externally fitted to the upper portions of the left and right lip groove steels 21a and 21b, and the flange The upper lip located on both outer sides of the lip groove steels 1a and 1b, and the lower opening stopper 23-2 is placed outside the lower lip groove steels 21a and 21b. It is fitted and covers the lower surface of the lower flange, and covers the outer side of the lower lip located on both outer sides of the lip groove steels 21a and 21b. As a result, the lip groove steels 21a and 21b The suspension base 21 is suspended by the suspension bolt 25 and is supported firmly and securely. In addition, the internal dimension width of each top or bottom of the upper stopper metal 23-1 and the lower stopper metal 23-2 is suspended to be twice the flange width length of the lip groove steel 21a, 21b. It is more desirable to form the bolt 25 or the suspension bolt 29 so as to be approximately equal to the dimension including the outer diameter.

  Further, in a state where the nut 27 and the nut 28 of the suspension bolt 25 are fastened, a predetermined inter-flange gap 43 (about 3 mm) is formed between the flanges 23-1Y and 23-2Y. Thereafter, by fastening between the flanges 23-1Y and 23-2Y with the bolt 41 and the nut 42, the opening stoppers 23-1 and 23-2 are fastened. For this reason, as the nut 42 is tightened, the left and right lip groove steels 21a, 21b are firmly tightened and securely fixed to the opening stoppers 23-1, 23-2.

Between the suspension bolts 25 and 25, in which the left and right lip groove steels 21a and 21b are suspended via the opening stoppers 23-1 and 23-2, the gap 22 is provided with a base for mounting equipment such as piping at the lower end. A suspension bolt 29 (see FIGS. 1, 2, and 5) for suspension is inserted, and a portion protruding above the gap 22 between the lip groove steels 21 a and 21 b of the suspension bolt 29 is standard. A washer 30 having a diameter larger than that of the washer is fitted, and two nuts 31 are screwed together. A washer 48 is fitted into a portion of the suspension bolt 29 that protrudes downward from the gap 22 between the lip groove steels 21a and 21b, and a nut 49 is screwed together. For this reason, by tightening the nuts 31 and 49, the suspension bolt 29 is reliably held by the lip groove steels 21a and 21b. The diameter of the washer 30 is made larger than that of the standard product in order to prevent the washer 30 from being deformed by a load acting on the suspension bolt 29. In addition, the suspension bolt 29 can be obtained by tightening the nuts 31 and 49 from above and below the lip groove steels 21a and 21b.
As a result, the lower outer ends of the lip channel steels 21a and 21b also have the effect of pressing the outward moment force with the washer 48 and the nut 49.

  FIG. 5 shows a normal case where the weight of the equipment suspended from the suspension bolt 29 is equal to or less than a certain load. However, when the load of the equipment supported by the suspension bolt 29 is large, FIG. As shown in FIG. 6, the opening stoppers 23-1 are fitted on the upper portions of the left and right lip groove steels 21a, 21b, and the opening stoppers 23-2 are externally attached to the lower portions of the left and right lip groove steels 21a, 21b. The flanges 23-1 Y and 23-2 Y of the opening stoppers 23-1 and 23-2 are preferably fastened by bolts 41 and nuts 42.

  That is, first, a bolt insertion hole 24-1 (see FIG. 4) of the stopper metal 23-1 is fitted into a portion of the suspension bolt 29 protruding upward from the gap 22 between the lip groove steels 21a and 21b. In addition, two nuts 31 are screwed together. Then, a bolt insertion hole 24-2 (see FIG. 4) of the opening stopper 23-2 is first fitted into a portion of the suspension bolt 29 protruding downward from the gap 22 between the lip groove steels 21a and 21b. Then, the washer 48 is fitted and the nut 49 is screwed. Opening stoppers 23-1 and 23-2 are in a state where the vertical members 23-1 X and 23-2 X and the flanges 23-1 Y and 23-2 Y are opposed to each other at the top and bottom, and the nuts 31 and 49 of the suspension bolt 29 are fastened. Thus, a predetermined inter-flange gap 43 is formed between the flanges 23-1Y and 23-2Y. The flanges 23-1Y and 23-2Y are fastened by bolts 41 and nuts 42, respectively, and the left and right lip groove steels 21a and 21b are firmly fastened and firmly fixed by opening stoppers 23-1 and 23-2. Has been.

  Therefore, even if the load applied to the suspension base 21 and the suspension bolt 29 is large, the opening stoppers 23-1 and 23-2 can sufficiently withstand the load, and therefore the opening stopper 23-1. , 23-2 is not deformed, and the gap 22 between the left and right lip groove steels 21a, 21b does not widen.

  At opposite ends of the suspension bases 21 and 21 adjacent to each other in the longitudinal direction, a pair of opening stoppers 33-1 and 33-2 (FIGS. 9) is provided.

  That is, the locking metal fitting 33-1 is in the shape of a section having a predetermined length in the longitudinal direction of the suspension base 21 and is longer than the above-described locking hardware 23-1, in the longitudinal direction of the suspension base 21. It is formed in a hat shape as seen, and covers the upper surfaces of the upper flanges of the lip groove steels 21a, 21b that are juxtaposed side by side in the longitudinal direction, and the left and right of the lip groove steels 21a, 21b. It is fitted on the upper part of the lip channel steel 21a, 21b so as to cover the outer side of the upper lip on both outer sides. Furthermore, the vertical members 33-1X on the left and right sides in the width direction of the opening stopper 33-1 extend below the lower end of the lip of the lip groove steel 11a, and the lower end of the vertical member 33-1X has a width A flange 23-1Y that protrudes horizontally outward is formed.

  Further, the opening stopper 33-2 is in the form of a section having a predetermined length in the longitudinal direction of the suspension base 1, and is longer than the above-described opening stopper 23-2, in the longitudinal direction of the suspension base 21. The lip groove steels 21a and 21b are formed in a reverse hat shape as viewed, and cover the lower surfaces of the lower flanges of the lip groove steels 21a and 21b that are arranged side by side and are adjacent in the longitudinal direction. It is fitted on the upper part of the lip groove steel 21a, 21b so as to cover the outer side of the lower lip on both the left and right outer sides. Further, the vertical members 33-2X on both the left and right sides of the opening stopper 33-2 extend upward from the upper end of the lip of the lip groove steel 11a, and outward from the upper end of the vertical member 33-2X. A flange 33-2Y protruding horizontally is formed.

  A plurality of bolt insertion holes 34-1 and 34-2 (two in the embodiment, two in total in the longitudinal direction) are provided on the flat portions of the top and bottom of each of the opening stoppers 33-1 and 33-2. 4) are drilled up and down. Thus, one of the two bolt insertion holes 34-1 is externally fitted to one suspension base 21 of the suspension bases 21 adjacent to each other in the longitudinal direction of the opening stopper 33-1. The remaining one is drilled in a portion of the retaining bracket 33-2 that is externally fitted to the other suspension base 21 of the suspension base 21 adjacent in the longitudinal direction. .

  In addition, one of the two bolt insertion holes 34-2 is attached to a portion of the stopper metal 33-2 that is externally fitted to one of the suspension bases 21 adjacent in the longitudinal direction. The remaining one is drilled in a portion of the locking stopper 33-2 that is externally fitted to the other suspension base 21 of the suspension base 21 adjacent in the longitudinal direction.

  The bolt insertion hole 34-1 of each opening stopper 33-1 and the gap 22 formed between the opposing webs of the left and right lip groove steels 21a and 21b, and the predetermined opening stopper 33-2 on the lower side. The fixing bolt 35 is inserted through the suspension bolt insertion hole 34-2.

  Thus, the washer 36 is fitted to the portion of the fixing bolt 35 protruding upward and the nut 37 is screwed, and the fixing bolt 35 protrudes below the opening stopper 33-2. A washer 38 is fitted and a nut 39 is screwed into the part.

  A plurality of bolt holes 44-1 and 44-2 vertically penetrates the flanges 33-1Y and 33-2Y of the opening stoppers 33-1 and 33-2 at predetermined intervals in the longitudinal direction of the suspension base 21. It is drilled to do. There are four bolt holes 44-1 for each of the left and right flanges 33-1Y with respect to the opening stopper 33-1 that is externally fitted so as to cover both ends of the suspension base 21 adjacent in the longitudinal direction. Is provided. Thus, in each of the flanges 33-1Y on one side, two of the four bolt holes 44-1 are located on the side of one suspension base 21 of the opening stopper 33-1 and the other two are , Located on the other suspension base 21 side of the opening stopper 33-1.

  Further, four bolt holes 44-2 are provided for each of the left and right flanges 33-2Y with respect to the opening stopper 33-2 that is externally fitted to cover both ends of the suspension base 21 adjacent in the longitudinal direction. Eight are provided. Thus, in each of the flanges 33-2Y on one side, two of the four bolt holes 44-2 are located on the side of one suspension base 21 of the opening stopper 33-2, and the other two are , Located on the other suspension base 21 side of the opening stopper 33-2.

  Further, the bolt 45 is inserted into the bolt holes 44-1 and 44-2 provided in the flanges 33-1Y and 33-2Y of the opening stoppers 33-1 and 33-2, and below the flange 33-2Y of the bolt 45. A nut 46 is screwed into the protruding portion.

  When the nut 37 or 39 is tightened, the upper opening stopper 33-1 is externally fitted to the upper portions of the left and right lip channel steels 21a and 21b at the ends of the suspension base 1 adjacent in the longitudinal direction. It covers the upper surface of the side flange and covers the outside of the upper lip located on both outer sides of the lip groove steels 21a and 21b, and the lower opening stopper 33-2 is the lower part of the left and right lip groove steels 21a and 21b. And the outer surface of the lower lip located on both outer sides of the lip groove steels 21a and 21b, and as a result, the lip groove steels 21a and 21b are arranged on the outer periphery of the fixing bolt 35. It is fixed in a state of being close to the side and substantially in contact with the outer periphery of the fixing bolt 35, and the adjacent suspension bases 21 are securely and firmly connected to each other.

  Further, in a state where the nut 37 and the nut 39 of the fixing bolt 35 are fastened, a predetermined gap 47 between the flanges 33-1Y and 33-2Y is formed. Thereafter, by tightening between the flanges 33-1Y and 33-2Y by the bolt 45 and the nut 46, the opening stoppers 33-1 and 33-2 are fastened. For this reason, as the nut 46 is tightened, the left and right lip groove steels 21a and 21b are firmly tightened and securely fixed by the opening stoppers 33-1 and 33-2 and are adjacent to each other in the longitudinal direction. The suspension bases 21 and 21 are also connected firmly and securely.

  According to the illustrated example, the lip groove steels 21a and 21b of the suspension base 21 are provided with opening stoppers 23-1 and 23-2 at a plurality of positions in the longitudinal direction, and upper portions of the lip groove steels 21a and 21b. In addition, the flanges 23-1Y and 23-2Y provided on both sides in the width direction of the opening stoppers 23-1 and 23-2 are vertically fixed with the gap 43 between the flanges interposed therebetween. Since the bolts 41 are integrally fastened, the more the bolt 41 is tightened, the more firmly the opening stoppers 23-1 and 23-2 are fixed to the suspension base 21.

  For this reason, in the suspension base 21, the excessive load applied by the equipment provided under the suspension bolt 29 pulls the nut 31 and the washer 30 above the suspension bolt 29 downward, so that the two lip channel steels 21a and 21b. The force concentrates on the lower part of the nut 31 and washer 30 located at the upper part of the lip groove steel, and the lower outer side of the lip groove steel 21a, 21b is caused by the rotational moment that rotates the lower part of the web of the two lip groove steels 21a, 21b outward. A large moment toward the outside is applied to the end, but the opening stoppers 23-1 and 23-2, the bolt 41, and the nut 42 form a ring with respect to the large moment force. -1,23-2 itself, bolt 41, etc., can resist it. This tensile stress is a force that is much greater than the plastic deformation resistance of the bent portion of the conventional fitting portion on the lower side of the stopper metal fitting. Therefore, even if the load applied to the suspension base 21 and the opening stoppers 23-1 and 23-2 is large, the opening stoppers 23-1 and 23-2 are not deformed, and the load is applied. It can withstand sufficiently, and the gap 22 between the left and right lip groove steels 21a, 21b does not widen. Accordingly, the suspension base 21 falls off from the opening stoppers 23-1, 23-2, or the suspension bolts 29 that support equipment such as pipes that are suspended by the suspension base 21 and supported by the suspension fall off. This can be prevented, and the reliability of the suspension base 21 is remarkably improved.

  Further, in the portion of the suspension bolt 25 where the suspension base 21 is suspended, the flanges 23-1Y and 23-2Y of the upper and lower opening stoppers 33-1 and 33-2 are fastened by the bolt 41, and the opening stopper bracket is attached. Since 33-1 and 33-2 have become sufficiently strong in strength, an opening stopper is not required at a position where the suspension bolt 29 for supporting the equipment base is suspended from the suspension base 21. For this reason, the suspension base 21 has a simple structure with a reduced number of parts.

  Further, when connecting a plurality of suspension bases 21 in the longitudinal direction, the locking members 33-1 and 33-2 also serving as connecting members are used, and the upper and lower locking brackets 33-1 and 33-2 are fixed. The flanges 33-1Y and 33-2Y provided on both sides in the width direction of the opening stoppers 33-1 and 33-2 are fastened by bolts 45 with a clearance 47 between the flanges being fastened by the bolts 35. For this reason, as the nut 46 is tightened, the opening stoppers 33-1 and 33-2 are firmly fixed to the left and right lip groove steels 21a and 21b. The suspension base 21 adjacent in the direction can be firmly and reliably connected. Therefore, the opening stoppers 33-1 and 33-2 are not likely to be deformed even in this connection portion. Therefore, the gap 22 between the webs of the lip channel steels 21 a and 21 b arranged side by side on the left and right sides of the suspension base 21. Can be prevented from being opened, and the reliability of the suspension base 21 can be improved.

  In addition, in the illustrated examples of the present specification including the conventional example, the nut on the bolt tip side among the nuts where the double nuts are provided is applied as a locking stopper for the nut on the washer side separated from the bolt tip side. Of course, various modifications can be made without departing from the scope of the present invention.

It is a front view which shows the outline | summary of the suspension base frame and suspension base frame connection part structure of this invention to which the opening metal fitting of this invention is applied. It is the II section enlarged view of FIG. It is a III-III direction arrow directional view of FIG. FIG. 4 is a cross-sectional view of the opening stopper shown in FIG. 3. It is a VV direction arrow line view of FIG. It is a modification which shows the method of fixing with respect to the lip groove steel of the suspension bolt shown in FIG. It is the VII section enlarged view of FIG. 1, and is a front view which shows the suspension mount frame connection part structure of this invention. It is a VIII-VIII direction arrow line view of FIG. It is sectional drawing of the opening stopper metal fitting shown in FIG. 8 used also as a connection member. It is a front view which shows the outline | summary of the suspension mount frame with which the conventional opening stopper metal fitting is applied. It is an XI section enlarged view of FIG. It is a XII-XII direction arrow directional view of FIG. FIG. 13 is a cross-sectional view illustrating a state in which the opening stopper metal in a normal state illustrated in FIG. 12 is deformed and shifted and a gap between the left and right lip groove steels is increased. FIG. 13 is a cross-sectional view of the stopper metal fitting of FIG. 12. It is a XV-XV direction arrow directional view of FIG. It is a XVI section enlarged view of FIG. It is a XVII-XVII direction arrow directional view of FIG. It is sectional drawing of the opening stopper metal fitting shown in FIG.

Explanation of symbols

21 Suspension base 21a Lip channel steel (section steel member)
21b Lip groove steel (section steel member)
22 Gap 23-1 Opening Stopper (Opening Stopper)
23-2 Unlocking hardware (unlocking member)
23-1Y flange 23-2Y flange 24-1 bolt insertion hole 24-2 bolt insertion hole 25 suspension bolt (first suspension bolt)
29 Hanging bolt (second hanging bolt)
33-1 Opening stop hardware (Opening stop member)
33-2 Unlocking hardware (unlocking member)
33-1Y Flange 33-2Y Flange 34-1 Bolt insertion hole 34-2 Bolt insertion hole 35 Fixing bolt 43 Flange gap 47 Flange gap

Claims (14)

In order to suspend and support the equipment from the building side of the building, it is a suspension base that is interposed in the middle part between the building side and the equipment,
The suspension base is
Left and right shaped steel members arranged side by side with a gap between opposing webs;
A plurality of locking members that are arranged at predetermined intervals in the longitudinal direction of the structural steel member and are externally fitted to the upper outer periphery of the left and right structural steel members;
A plurality of locking members that are arranged at predetermined intervals in the longitudinal direction of the structural steel member and are fitted on the outer periphery of the lower side of the left and right structural steel members to form a pair with the locking member on the upper side; With
In the suspension base,
It passes through the top of the upper side locking member and the bottom of the lower side locking member and is inserted into the gap between the left and right shaped steel members so that the upper and lower positions of the upper side locking member and the lower side are opened. A suspension bolt fixed to the stop member is provided,
A suspension base, wherein the upper side opening prevention member and the lower side opening prevention member are bolted via flanges provided on both sides in the width direction.   The outer diameter of the suspension bolt and the gap between the left and right structural members are substantially the same size, and the suspension bolt is an upper opening stopper that is externally fitted to the upper outer periphery of the left and right structural members. The suspension base according to claim 1, wherein the suspension base frame is sandwiched between the member and the left and right shape steel members through the lower opening preventing member fitted on the lower outer periphery of the left and right shape steel members.   The suspension base according to claim 1 or 2, wherein the suspension bolt is at least a first suspension bolt among a first suspension bolt supported on a building side or a second suspension bolt that supports equipment.   The suspension frame according to any one of claims 1 to 3, wherein the structural steel member is a lightweight structural steel that is vertically symmetric when the web is arranged vertically.   The cross-sectional shape of the upper opening prevention member is formed in a hat shape when viewed in the longitudinal direction of the shaped steel member, and the sectional shape of the lower opening prevention member is formed in an inverted hat shape. The suspension base described in any one.   The top upper surface of the upper locking member and the lower side opening of the suspension bolt that penetrates the top of the upper locking member and the bottom of the lower locking member and is inserted into the gap between the left and right shaped steel members. Each nut is screwed onto the bottom bottom surface of the stopper member, and the upper opening prevention member is externally fitted to the upper outer periphery of the left and right structural steel members, and the lower opening prevention member is attached to the lower side of the left and right structural steel members. 6. An inter-flange gap is formed between the flange of the upper side stopper member and the flange of the lower side stopper member when the nuts are externally fitted and the nuts are fastened. A suspension base according to any one of the above. In the gap between the opposing webs of the left and right shaped steel members, a plurality of the first suspension bolts supported by the building or the second suspension bolts supporting the equipment are inserted through at least the first suspension bolts. It is a connection part structure of a suspension base that connects the suspension base at the opposite longitudinal ends,
In the connection part of the suspension base,
An upper-side outer periphery of the left and right section steel members of one suspension base, and an anti-opening member externally fitted to the upper-side outer periphery of the left and right shape steel members of another suspension base that is adjacent to the one suspension base ,
The lower end outer periphery of the left and right structural steel members of the one suspension base and the opening prevention member fitted on the lower outer periphery of the left and right shape steel members of the other suspension base adjacent to the one suspension base. Is provided,
The upper side and lower side locking members are connected between the webs of the left and right structural steel members through the tops of the upper side locking members and the bottoms of the lower side locking members in both suspension bases to be connected. It is fastened with a fixing bolt inserted in
The connecting structure of a suspension base, wherein the upper opening prevention member and the lower opening prevention member are fastened by bolts at flanges formed on both sides in the width direction of each opening prevention member.   The outer diameter of the fixing bolt and the gap between the webs of the left and right structural steel members have substantially the same dimensions, and the fixing bolt is fitted on the upper outer periphery of the left and right structural steel members. It penetrates between the web of the left and right structural steel members and is sandwiched between the left and right structural steel members. The connecting part structure of the suspension base according to claim 7.   The connecting structure of a suspension base according to claim 7 or 8, wherein the structural steel member is a lightweight structural steel that is symmetrical in the vertical direction when the web is arranged vertically.   10. The cross-sectional shape of the upper opening preventing member is formed in a hat shape when viewed in the longitudinal direction of the shaped steel member, and the sectional shape of the lower opening preventing member is formed in an inverted hat shape. The connection part structure of the suspension base frame in any one.   The top upper surface of the upper locking member and the lower side opening of the suspension bolt that penetrates the top of the upper locking member and the bottom of the lower locking member and is inserted into the gap between the left and right shaped steel members. Each nut is screwed onto the bottom bottom surface of the stopper member, and the upper opening prevention member is externally fitted to the upper outer periphery of the left and right structural steel members, and the lower opening prevention member is attached to the lower side of the left and right structural steel members. 11. An inter-flange gap is formed between the flange of the upper-side stopper member and the flange of the lower-side stopper member when the nut is externally fitted and the nuts are fastened. The connection part structure of the suspension base frame in any one of. In the suspension base, a bolt hole through which a fixing bolt inserted in a gap formed between the webs of the structural steel members facing left and right is formed at the top, and on the upper outer periphery of the left and right structural steel members. A locking member to be externally fitted;
In the suspension base, a bolt hole through which a fixing bolt inserted through a gap formed between the webs of the structural steel members facing left and right passes is formed at the bottom, and the outer periphery on the lower side of the left and right structural steel members A locking member that is externally fitted to,
An opening preventing member structure comprising upper and lower flanges provided on both sides in the width direction of the upper and lower opening preventing members and fastened by bolts.   The cross-sectional shape of the upper-side stopper member is formed in a hat shape when viewed in the longitudinal direction of the shaped steel member, and the sectional shape of the lower-side stopper member is formed in an inverted hat shape. Non-opening member structure.   The top upper surface of the upper locking member and the lower side opening of the suspension bolt that penetrates the top of the upper locking member and the bottom of the lower locking member and is inserted into the gap between the left and right shaped steel members. Each nut is screwed onto the bottom bottom surface of the stopper member, and the upper opening prevention member is externally fitted to the upper outer periphery of the left and right structural steel members, and the lower opening prevention member is attached to the lower side of the left and right structural steel members. 14. A flange-to-flange gap is formed between the flange of the upper-side stopper member and the flange of the lower-side stopper member when the nut is externally fitted and the nuts are fastened. The opening prevention member structure of description.

Images