JP2023033046A - Anti-vibration metal fixture for channel steel - Google Patents

Abstract

To provide an anti-vibration metal fixture for channel steel which can simultaneously attach a connecting metal fixture for attaching an anti-vibration bolt when attaching a channel steel to a suspension bolt, and also, is easy in the attachment of the channel steel by being temporarily fastened to the suspension bolt.SOLUTION: An anti-vibration metal fixture for channel steel which is attached to a suspension bolt suspended from a ceiling slab to attach an anti-vibration bolt obliquely arranged at the channel steel for placing and fixing a long-length material thereto with respect to the suspension bolt comprises: an attachment member attached to an opening side of the channel steel; and an oblique support material for making the attachment member and a base part superimposed on each other, and having a connecting part in which the anti-vibration bolt is connected to a tip. A penetration hole penetrated with the suspension bolt is continuously formed at a superimposed part of the attachment part and the base part of the oblique support material, and a ring-shaped connecting member which is fit into the penetration hole is arranged so that both the attachment member and the base part of the oblique support material are turnably connected to each other.SELECTED DRAWING: Figure 1

Description

The present invention is a groove-shaped structure that is supported by suspension bolts suspended from the ceiling slab when arranging long members such as cable racks and electrical conduits under the ceiling slab, and for placing and fixing the long members at appropriate intervals. The present invention relates to an anti-vibration fitting for channel steel for attaching an anti-vibration bolt for suppressing vibration due to an earthquake or the like to steel.

Conventionally, when attaching anti-vibration bolts to channel steel that is supported by hanging bolts suspended from a ceiling slab, it is necessary to separately prepare connecting fittings, and the procedure is as follows.
First, in a state in which the tightening nut D and the mounting cover 60 attached by inserting the through hole are arranged on the suspension bolt B, a locking nut to be locked to both opening pieces of the channel steel A is attached to the lower end of the suspension bolt. The channel steel is attached to the suspension bolt via the locking nut, the mounting cover 60 is mounted on the opening surface of the channel steel facing upward, and the clamping nut D is tightened to fix it.
Alternatively, in a state in which the tightening nut D and the mounting cover 60 attached to the suspension bolt B are inserted through the through-holes, channel steel having through-holes provided on both sides is inserted through the through-holes, and the suspension bolt is inserted through the through-holes. A receiving nut is screwed from the side to attach it to the hanging bolt, the mounting cover is mounted on the opening face of the channel steel A facing upward, and the tightening nut D is tightened to fix it.
Next, a connecting fitting 70 for attaching an anti-vibration bolt C disposed obliquely to the suspension bolt B is attached to the suspension bolt B, and the anti-vibration bolt C is attached to the coupling fitting 70 and connected. was (See Figure 8)

Various types of connecting fittings have been disclosed so far. For example, in Patent Document 1, a pair of fixing plates are sandwiched from both sides of hanging bolts fixed to channel steel, overlapped, and nuts are tightened. After fixing the bolts, nuts are tightened from both sides while the anti-vibration bolts are inserted into through-holes provided at the tip of one of the fixing plates that bends outward from the overlapped portion.
In addition, Patent Document 2 discloses a configuration in which a substrate and a clamping portion attached to the substrate and capable of clamping and fixing a hanging bolt and a plurality of anti-vibration bolts by tightening a tightening bolt are provided.

Japanese Utility Model Publication No. 04-048087 JP 2017-145897 A

In any of the above-mentioned conventional connecting metal fittings, the work of attaching the connecting metal fittings is performed after the channel steel is attached to the suspension bolt. Since it is necessary to carry out three work steps, ie, the step and the step of attaching the anti-vibration bolts to the connecting fittings, the number of work steps increases, hindering labor saving.
In addition, since the structure of the connecting fitting itself becomes complicated, there is a problem that it takes time and effort to install it.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art. To provide a steady rest fitting for channel steel which can be easily attached to the channel steel.

As a means for achieving this, claim 1 of the present invention provides a steady bolt that is attached to a suspension bolt that suspends from a ceiling slab, and that is installed obliquely with respect to the suspension bolt on channel steel on which a long member is placed and fixed. comprising a mounting member to be mounted on the opening side of the channel steel, and a connection portion where the mounting member and the base are overlapped and the tip is connected to the steady bolt and an insertion hole through which the suspension bolt is inserted is continuously provided in the overlapped portion of the mounting member and the base of the oblique support member, and both are rotatably connected. It is characterized by providing a ring-shaped connecting member that fits into the hole.

A second aspect of the present invention is characterized in that a plurality of protruding pieces directed toward the center are provided on the inner peripheral surface of the connecting member.

According to the invention according to claim 1, since the diagonal support member for attaching the anti-vibration bolt to the mounting member mounted on the opening side of the channel steel is connected and integrated with the ring-shaped connecting member, In the process of attaching the channel steel, diagonal supports that serve as connecting fittings are attached to hanging bolts.
In other words, there are two work processes, one for attaching the channel steel to the hanging bolt and the other for attaching the anti-vibration bolt to the slanted support member that will be the connecting fitting. can be done.

According to the second aspect of the invention, the protruding piece provided on the inner peripheral surface of the connecting member engages with the screw thread of the hanging bolt to temporarily fix it, so that the hand can be temporarily released. Installation of steel is facilitated and work efficiency can be promoted.

BRIEF DESCRIPTION OF THE DRAWINGS It is the perspective view seen from (a) front of embodiment of this invention, (b) perspective view seen from the back. FIG. 2 is an exploded explanatory view of the anti-vibration fitting for channel steel in FIG. 1 ; FIG. 2 is a central cross-sectional view of the anti-vibration fitting for channel steel of FIG. 1 ; FIG. 4 is a perspective view showing another embodiment of the diagonal support member of the present invention; 1. It is explanatory drawing which shows the attachment procedure of the anti-vibration metal fittings for channel steel of FIG. FIG. 2 is a perspective view showing a state of use of the anti-vibration fitting for channel steel of FIG. 1 ; FIG. 4 is a perspective view showing a case where two diagonal support members of the present invention are used; FIG. 11 is a perspective view showing a conventional example;

An embodiment of the anti-vibration fitting for channel steel of the present invention will be described based on the drawings.
As shown in FIGS. 1 to 4, the anti-vibration metal fitting for channel steel of the present invention comprises a mounting member 10, an oblique support member 20, and a connecting member 30 which can be rotatably connected to each other.
The mounting member 10 is made of a substantially U-shaped thin steel plate so as to be fitted on the short side of the opening of the channel steel A, and has a first through hole 11 in the center through which the suspension bolt B is inserted.
The diagonal support member 20 has a base portion 22 in which a second through hole 21 having the same diameter as the first through hole 11 of the mounting member is formed, and a connection portion 23 to which the anti-vibration bolt C is connected at the tip. It is integrally formed of a thin steel strip via a connecting piece 24 that bends so as to extend in an oblique direction.
A notch portion 25 having a width slightly larger than the outer diameter of the anti-vibration bolt C is formed in the connecting portion 23, and the anti-vibration bolt C having a pair of tightening nuts D screwed into the notch portion 25 is tightened. By inserting the nut D into the notch 25 and tightening the pair of tightening nuts D from both sides, the anti-vibration bolt C can be connected.
A cut-and-raised portion 26 is formed on the opening side of the notch portion 25, and the tightening nut D abuts against it to prevent the anti-vibration bolt C from slipping out.

Further, as another embodiment of the diagonal support member, as shown in FIG. It is fixed by pressing with a bolt 42 in the form (a), or alternatively, an oblique support member 50, a holding member 51 provided with a notch 52 that engages with the outer circumference of the anti-vibration bolt C, and a tightening bolt 53. , and a coil spring 54 mounted on the tightening bolt 53 . may be fixed integrally by tightening, and in both (a) and (b), the anti-vibration bolt C is fixed only by tightening the tightening bolts 42 and 53 without using a pair of tightening nuts D. Further, in (b), by enabling the clamping member 51 to rotate around the tightening bolt 53, the angle of the anti-vibration bolt C can be adjusted. Since the adjustment can be easily performed, it is possible to further improve work efficiency. The configuration of the above-described embodiment of the diagonal support member according to the present invention is not particularly limited, and any configuration that can fix the anti-vibration bolt can be used. .

The connecting member 30 has a ring-shaped main body 31 and a flange portion 32 having a larger diameter than the inner diameter of the second through hole of the oblique support member 20. An engaging claw 33 protruding further outward is integrally formed of synthetic resin.
The base portion 22 of the oblique support member 20 is superimposed on the upper surface of the mounting member 10, and the first and second through holes 11 and 21 communicate with each other to form an insertion hole 35 for the hanging bolt B. The connecting member 30 is press-fitted along the inner side of the insertion hole 35 , the flange portion 32 abuts against the peripheral edge of the second through hole 21 of the oblique support member 20 , and the locking claw 33 engages the first through hole 21 of the mounting member 10 . The mounting member 10 and the oblique support member 20 are rotatably connected by being engaged with the periphery of the back side of the through hole 11 .
By forming a plurality of protruding pieces 34 toward the center of the axis on the inner peripheral surface of the ring-shaped main body 31 of the connecting member 30, when the hanging bolt B is inserted, the screw thread of the hanging bolt B is engaged with the screw thread of the hanging bolt B to provide a temporary structure. can be stopped.

The mode of use of the anti-vibration bracket for channel steel constructed in this way will be described along with the mounting procedure with reference to FIG.
(a) A pair of hanging bolts B suspended from the ceiling slab so as to be arranged at both ends of channel steel A are screwed with tightening nuts D from the lower ends of the respective bolts to form the channel steel anti-vibration fitting of the present invention. The connecting member 30 is inserted through the insertion hole 35 and mounted at a desired height. can.
(b) A channel steel A having through-holes A1 formed in the bottom surface on both sides thereof is inserted into the through-holes A1 by a suspending bolt B.
(c) The receiving nut E is screwed from below to attach it to the hanging bolt, the mounting member 10 is moved and mounted on the opening face of the channel steel facing upward, and the tightening nut D is tightened to fix it.
(d) An anti-vibration bolt C having a pair of tightening nuts D screwed into a notch portion 25 formed in the connection portion 23 of the oblique support member 20 is inserted between the tightening nuts D so as to climb over the cut-and-raised portion 26 and The anti-vibration bolt C can be connected by inserting it into the notch 25 and fixing it with the tightening nuts D on both sides.
FIG. 6 shows a state in which the cable rack F is placed on the channel steel A to which the suspension bolts suspended from the ceiling slab and the anti-vibration bolts are attached by the above procedure, and is fixed by the fixing metal fittings G. As shown in FIG.

Here, the case where a single diagonal support member 20 suppresses vibration in the direction perpendicular to the longitudinal direction of the cable rack F has been described, but as shown in FIG. By connecting two anti-vibration bolts in the front and rear directions along the longitudinal direction of the cable rack F placed on the channel steel A, the vibration in the longitudinal direction can be suppressed.
Further, it is also possible to suppress the deflection in three directions, that is, the two directions and the orthogonal direction, by forming the diagonal support members 20 in three layers. (illustration omitted)

10 Mounting member 11 First through hole 20 Diagonal support member 21 Second through hole 22 Base 23 Connecting portion 24 Connecting portion 25 Notch 26 Cut-and-raised portion 30 Connecting member 31 Main body 32 Flange 33 Locking claw 34 Protruding piece 35 Insertion Hole 40 Diagonal support member 41 Notch 42 Tightening bolt 50 Diagonal support member 51 Clamping member 52 Notch 53 Tightening bolt 54 Coil spring 60 Mounting cover 70 Connecting fitting A Channel steel A1 Through hole B Suspension bolt C Anti-vibration bolt D Tightening Nut E Receiving nut F Cable rack G Fixing bracket

Claims (2)

Anti-sway fittings for channel steel for attaching anti-sway bolts that are installed diagonally to the suspension bolts on channel steels that are attached to suspension bolts suspended from ceiling slabs to place and fix long materials. a mounting member to be mounted on the opening side of the channel steel; and an oblique support member having a base portion overlapped with the mounting member and provided with a connection portion to which the anti-vibration bolt is connected at the tip thereof, the mounting member An insertion hole through which the suspension bolt is inserted is continuously provided in the overlapped portion of the support member and the base of the oblique support member, and a ring-shaped connecting member is provided to be fitted in the insertion hole so that both are rotatably connected. A steady rest for channel steel characterized by: 2. The anti-vibration fitting for channel steel according to claim 1, wherein a plurality of protruding pieces directed toward the center are provided on the inner peripheral surface of the connecting member.

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