JP4446353B2 - Suspension bolt support bracket for shape steel - Google Patents

Description

  The present invention is a fitting for supporting a suspension bolt that is attached to a flange portion of a shape steel used for a structural material or a base material of a building, etc., and suspends piping, equipment, etc. The present invention relates to a support metal fitting having a function of preventing dropping from a flange portion.

Conventionally, JP-A-2002-339937 has been disclosed as a metal fitting of this type.
The contents are substantially U-shaped consisting of first and second arm portions, and a bolt is screwed onto the first arm portion on the upper side and the flange portion of the shaped steel is attached to the second arm portion by tightening the bolt. The mounting bracket that is mounted in a state of being sandwiched between the arm portion is related to a mounting bracket drop-off prevention device that prevents it from coming off to the tip side of the flange portion of the shape steel. The base is composed of a first engagement portion standing on one end side of the base portion and a second engagement portion extending to the other end side of the base portion and having an engagement hole, and the base portion is a flange portion. The first engagement portion is engaged with the end surface of the flange portion, the fitting is inserted into the engagement hole of the second engagement portion, and the engagement hole is the second arm portion. In the engaged state with restricted movement, tighten the mounting bracket bolt and clamp the flange with the second arm. It is intended.
That is, the movement of the mounting bracket in the direction of the distal end of the flange, which is the direction in which the mounting bracket comes off due to a load or the like, is regulated by the outer surface of the second arm abutting against the hole edge of the engagement hole of the mounting bracket dropout prevention tool. Dropping is prevented, and the tensile force obtained by engaging the first engaging portion with the end face of the flange is used as a supporting force for regulating.

Further, as shown in FIGS. 11 and 12, both ends of the support bracket in which the end of the round steel is hook-shaped and the outer periphery of the base is appropriately threaded are attached to the flange portion of the shape steel. Insert between the plates, attach the contact plate and nut to the base end with the tip hooked to the edge of the flange, and tighten the nut to contact the outer ends of both sides of the support bracket Thus, a device that regulates movement in the pull-out direction and prevents dropping is disclosed.
JP 2002-339937 A

Regarding the problems of the conventional method described above, the drop-off prevention tool disclosed in Japanese Patent Application Laid-Open No. 2002-339937 is for a U-shaped mounting bracket composed of upper and lower first and second arm portions. It is effective as a prevention of falling off.
However, when the supported body is a heavy object such as a large-diameter pipe or equipment, especially when the shape steel is placed under a sloped roof and the flange portion is inclined downward, it is supported. Problems such as insufficient strength occur.

The reason is as follows. When the shape steel is arranged horizontally, the load of the supported body is applied in the vertical direction, so the load is supported by the support force of the mounting bracket and pulled out toward the flange tip. The load applied to the mounting bracket is shared and supported by the clamping force by tightening the bolts of the mounting bracket and the tensile force obtained by the first engagement portion engaging with the end face of the flange.
In this case, since the load applied in the pulling-out direction is small, it was useful if there was an appropriate tensile force.
However, the load of the supported body that is applied in the vertical direction due to the inclination of the shape steel is changed to the direction of pulling out toward the flange tip, and the tensile force obtained by engaging with the end face of the flange is the burden to support this load. Therefore, when the inclination angle of the section steel is 90 °, a tensile force corresponding to the strength for supporting the load of the supported body is required.
In addition, the tensile force is determined based on the cross-sectional area if the materials are considered to be equivalent. Therefore, if the cross-sectional area increases, a larger tensile force can be obtained.

In other words, the dropout prevention tool disclosed in Japanese Patent Application Laid-Open No. 2002-339937 has a configuration in which the outer shape of the mounting bracket is inserted, so that the ratio of the width of the engagement hole to the width of the dropout prevention tool is increased, and the effective cross-sectional area is effectively increased. Therefore, there is a problem that it is difficult to obtain sufficient tensile force corresponding to the strength to support the supported body.
In order to reinforce the tensile force, for example, it is conceivable to increase the width of the drop-off prevention device, or to increase the plate thickness. There were also problems such as heavy handling, poor material costs and economic disadvantages.

  Similarly, even if the latching body is inserted between both side plates of the support bracket, the space for insertion is limited, so that the cross-sectional area of the latching body can be efficiently and effectively secured. In some cases, it becomes difficult to obtain the necessary support strength when the inclination angle of the section steel increases.

  The present invention has been made in view of the above-described conventional problems, and its purpose is to reliably support a suspension bolt for suspending piping, equipment, etc., regardless of the inclination angle of the shape steel, and to remove from the shape steel. An object of the present invention is to provide a hanging bolt support metal fitting for a shape steel which can be prevented from falling.

As the means, claim 1 of the present invention provides a screw portion below the opening portion of the bottom plate in which the first side plate and the second side plate provided opposite to each other from the one end side toward the center are erected at both ends. And a first long hole and a second long hole into which the first side plate and the second side plate of the support main body are respectively inserted in the longitudinal direction. Consists of a substantially L-shaped retaining plate with a bent piece extended, and a flange portion of the shape steel is inserted into the opening of the support body, and the bent piece of the retaining plate is attached to the edge of the shaped steel. Hanging bolts or fastenings that are fastened and screwed to the threaded portion of the support body with the backs of the first and second side plates in contact with the edges of the first and second long holes, respectively. A bolt was tightened and the flange portion of the shape steel was sandwiched between the upper side of the opening of the support body and the retaining plate. To.

According to a second aspect of the present invention, at least one of the first side plate and the second side plate of the support body is provided with a protruding piece that prevents the latch plate from coming off.

A third aspect of the present invention is characterized in that a suspension bolt mounting portion is provided on the bottom plate of the support body, and a tightening bolt is screwed onto the screw portion.

A fourth aspect of the present invention is characterized in that a suspension bolt support is swingably attached to the support body.

According to the first aspect of the present invention, the screw portion is provided below the opening portion of the bottom plate in which the first side plate and the second side plate which are provided to face each other from the one end side to the center are erected at both ends. According to the structure of the support body, the suspension bolt or the fastening bolt can be screwed onto the screw portion of the bottom plate, and the bolt can be tightened to firmly attach to the flange portion of the shape steel.
A first elongated hole and a second elongated hole into which the first side plate and the second side plate of the supporting body are respectively inserted are arranged in parallel in the longitudinal direction, and a bent piece is extended at the opening side end of the supporting body. With the configuration of the L-shaped retaining plate, it is possible to prevent the flange from falling off regardless of the inclination angle of the shape steel, and to support the supported body with certainty.

That is, since the latch plate and the support body are joined to the first and second elongated holes in which both side plates of the support body are slightly wider than the width of the side plates provided on the latch plate, It is possible to reduce the proportion of the cross section of the stop plate that is missing, and to ensure an efficient and effective cross sectional area of the stop plate.
Therefore, it is possible to efficiently obtain a necessary tensile force, so that the lack of support strength is solved even when the inclination angle of the section steel increases.

According to a second aspect of the present invention, the support body and the latch plate are integrated with each other by providing a projection piece for preventing the latch plate from coming off on at least one of the first side plate and the second side plate of the support body. To improve the work efficiency.

According to claim 3 of the present invention, a suspension bolt mounting portion is provided on the bottom plate of the support body, and a fastening bolt is screwed onto the screw portion, so that the suspension bolt can be supported by the suspension bolt mounting portion. The flange part of the shape steel can be tightened with a tightening bolt.
That is, since the fastening bolt for fastening the flange portion of the shape steel and the suspension bolt for hanging the supported body such as a pipe can be separated, the attachment to the flange portion of the shape steel becomes more reliable, The reliability of construction increases.

According to the fourth aspect of the present invention, the suspension bolt support body is swingably attached to the support body, so that the suspension bolt support body swings according to the inclination even when the shape steel is inclined. Since the bolt can be supported in a vertical state, it is possible to efficiently support the load of the supported body, and since it is integrated with the support body, the handling in the work is facilitated, and the work efficiency is improved.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a perspective view showing a first embodiment of a structural steel hanging bolt support fitting according to the present invention, FIG. 2 is a central sectional view thereof, and FIG. 3 is an explanatory view showing an assembled state.

Reference numeral 10 denotes a support body, which is composed of a bottom plate 11 and a first side plate 12 and a second side plate 13 opposed to both ends of the thin steel plate by bending it into a substantially U-shape.
Reference numeral 14 denotes an opening provided to face the first side plate 12 and the second side plate 13 and has an opening height at which the flange portion of the channel steel can be inserted.
Further, the first side plate 12 and the second side plate 13 are respectively formed with reinforcing ribs that bulge outward to improve the strength.
Reference numeral 15 denotes a screw portion to which a bolt is screwed, and is provided on the bottom plate 11 below the opening portion 14.
Reference numerals 16 and 16 are through holes provided in the first side plate 12 and the second side plate 13 for attaching a suspension bolt support 30 for vertically attaching the suspension bolt when the shape steel is inclined.

Reference numeral 20 denotes a retaining plate, which forms a bent piece 21 by bending the tip of a strip-shaped thin steel plate substantially at a right angle.
22 and 23 are a first long hole and a second long hole for mounting the first side plate 12 and the second side plate 13, respectively. The width of the long holes is slightly larger than the width obtained by adding the rib height to the plate thickness of the side plates. The length is made large so that the side plates can be inserted.
The long holes 22 and 23 are provided in the first side plate 12 and the second side plate 13 when the support body 10 is attached to the flange portion of the shape steel and the bent piece 21 is hooked to the edge of the shape steel. The back surface opposite to the portion 14 is provided at a position where it abuts against the edges of the long holes 22 and 23.

Reference numerals 17 and 17 denote projection pieces provided on the first side plate 12 and the second side plate 13, which are integrally protruded by pressing, and the projection pieces 17 and 17 are formed as the first long hole 22 and the second long hole 23. The latch plate 20 and the support body 10 are integrated so as not to engage with the hole edge and come out upward.

As shown in FIG. 4, a suspension bolt mounting portion 18 made of a screw that is juxtaposed with the screw portion 15 and is screwed to the bottom plate 11 of the support body 10 may be provided. It is good also as a through-hole of the magnitude | size which can insert a suspension bolt, and it may clamp | tighten and support a nut from the upper and lower sides through a bottom plate to the suspension bolt inserted in the through-hole.
A fastening bolt 19 is screwed and integrated with the screw portion 15 of the bottom plate 11 to improve workability when attaching to the flange portion of the shape steel.

FIG. 5 is a perspective view showing a second embodiment of the structural steel hanging bolt support fitting according to the present invention, FIG. 6 is a central sectional view thereof, and FIG. 7 is an explanatory view showing an assembled state.
The support main body 10 and the retaining plate 20 are as described above, and 30 is a suspension bolt support body, which is formed by bending a thin steel plate into a substantially U shape and screwing the suspension bolt to the bottom. .
A through hole 32 is provided at one end of both side surfaces, and a screw portion 33 is provided at the opposite position of the other side, and a bolt 34 is inserted from the through hole 32 side through the through holes 16 and 16 of the support body 10. As a result, the suspension bolt support 30 can swing with respect to the support body 10 around the bolt 34.

Next, a method of using the embodiment of the present invention will be described.
FIG. 8 shows a use state of the first embodiment of the present invention.
A suspension bolt B is screwed onto the screw portion 15 of the bottom plate 11 of the support body 10, and a flange portion of the shape steel A is inserted into the opening 14 of the support body 10, and the bent piece 21 of the retaining plate 20 is shaped into the shape steel. Attaching to the edge of A, and tightening the suspension bolt B with the backs of the first side plate 12 and the second side plate 13 in contact with the end edges of the first long hole 22 and the second long hole 23, respectively. To do.
Next, a pipe support bracket D that holds the pipe C is suspended from the suspension bolt B.

Further, as shown in FIG. 9, when the suspension bolt mounting portion 18 is provided, the flange portion of the shape steel A is inserted into the opening portion 14 of the support body 10 to form the bent piece 21 of the retaining plate 20. The threaded portion 15 of the bottom plate 11 is engaged with the edge of the steel A, and the back surfaces of the first side plate 12 and the second side plate 13 are in contact with the end edges of the first long hole 22 and the second long hole 23, respectively. The fastening bolt 19 that is screwed onto the suspension bolt is fastened and fixed. After the suspension bolt B is screwed onto the suspension bolt mounting portion 18, the pipe support fitting D that holds the pipe C is suspended on the suspension bolt B.

FIG. 10 shows a use state of the second embodiment of the present invention.
In the same manner as when the suspension bolt mounting portion 18 is provided, the support body 10 and the retaining plate 20 are attached to the flange portion of the shape steel A, and then the suspension bolt B is screwed onto the thread portion 31 of the suspension bolt support 30. The pipe support fitting D holding the pipe C is suspended by the suspension bolt.

The perspective view which shows 1st Example of this invention Central sectional view showing a first embodiment of the present invention Explanatory drawing which shows the assembly state of 1st Example of this invention. Explanatory drawing which shows the assembly state of 1st Example which provided the suspension bolt attachment part. The perspective view which shows 2nd Example of this invention. Central sectional view showing a second embodiment of the present invention Explanatory drawing which shows the assembly state of 2nd Example of this invention. Explanatory drawing which shows the use condition of 1st Example of this invention Explanatory drawing which shows the use condition of 1st Example which provided the suspension bolt attaching part. Explanatory drawing which shows the use condition of 2nd Example of this invention. Conventional figure 1 Conventional figure 2

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Support main body 11 Bottom plate 12 1st side plate 13 2nd side plate 14 Opening part 15 Screw part 16 Through-hole 17 Protrusion piece 18 Suspension bolt attachment part 19 Tightening bolt 20 Stopping plate 21 Bending piece 22 1st long hole 23 2nd long hole 30 Suspension bolt support 31 Screw part 34 Bolt

Claims (4)

A support body provided with a threaded portion below the opening of the bottom plate in which the first side plate and the second side plate provided opposite to each other from the one end side toward the center are provided on both ends; A first long hole and a second long hole into which the first side plate and the second side plate are respectively inserted are arranged side by side in the longitudinal direction, and a bent piece is extended at the opening side end of the support body. A flange portion of the shape steel is inserted into the opening of the support body, and a bent piece of the latch plate is latched to an edge of the shape steel, and the first elongated hole and the second 2 A fastening bolt or a fastening bolt screwed to a threaded portion of the support body with the back surfaces of the first side plate and the second side plate in contact with the edges of the two long holes, respectively, is tightened, and the upper side of the opening of the support body A structural steel suspension bolt support metal fitting, wherein a flange portion of the structural steel is sandwiched through the retaining plate. 2. The structural steel hanging bolt support bracket according to claim 1, wherein a projection piece for preventing the latch plate from coming off is provided on at least one of the first side plate and the second side plate of the support body. The structural steel suspension bolt support bracket according to claim 1 or 2, wherein a suspension bolt mounting portion is provided on a bottom plate of the support body, and a tightening bolt is screwed onto the screw portion. The suspension bolt support bracket for structural steel according to claim 1, 2, or 3 , wherein a suspension bolt support is swingably attached to the support body.

Images