JPH07115716A - Cable rack installation and mounting hardware - Google Patents

Abstract

PURPOSE:To make possible the fitting of a child beam is the stage of installation and even after the installation by loading a reinforcing child beam using coupling metals to the area where the child beam of cable rack coupled at the right angle with the reinforcing child beam isolated independently from a parent beam. CONSTITUTION:A parent beam P1 is cut and removed, abutting on the bending condition, and a child beam P2 of the removed part is isolated from the parent beam P1 to form an independent reinforcing child beam Q. Next, the end portions of the parent beam P2 are coupled with each other. In this case, the parent beams P1 can be coupled by loading the L metal device R to the coupling end of the parent beam P1. Moreover, the reinforcing child beam Q is loaded using a coupling metal device S to the part where the child beam P2 of the coupled cable rack is removed. As explained above, a child beam can be loaded as required in the stage of installing the cable rack or after the installation thereof, making easier the work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a cable rack construction method and a mounting bracket suitable for cutting a cable rack to change the direction of the construction route when constructing a ladder type cable rack. Regarding

[0002]

2. Description of the Related Art When a conventional ladder type cable rack is installed, the cable rack is cut and processed in order to change the direction of the cable rack when there are obstacles such as pillars and equipment. There is a case where it is arranged in a bent state. At this time, depending on the construction site, there are insufficient child girders,
The cable may drip. Therefore, conventionally, a support material is arranged in a portion of the cable rack where the child girders are insufficient, and the cable girders are reinforced by suspending them together with the parent girders.

[0003]

However, in order to arrange the support material in this way, it is necessary to prepare a suspension bolt for supporting the support material, an insert for fixing the suspension bolt to the ceiling surface, and the like. However, the insertion position of the insert must be determined in advance before the cable rack is installed, and there is a disadvantage that the insert cannot be attached at the cable rack installation stage or after the installation. Further, in order to dispose the support material, it is necessary to cut the support material, the hanging bolts, etc. to an appropriate length, and assemble this into a cable rack, which requires a lot of labor.

Therefore, the present invention was created in order to solve the above-mentioned problems, and it becomes possible to attach a sub-girder as needed at the stage of or after the construction of a cable rack, and further, a hanging bolt or The purpose of the present invention is to provide a cable rack construction method and a mounting bracket that can be easily installed without using an insert or the like.

[0005]

To achieve the above object, the first means of the present invention is to cut and remove the main beam P1 so as to bring the ends of the cable rack P into contact with each other in a bent state. A process of separating the removed child girder P2 from the parent girder P1 to form an independent reinforcing child girder Q, and a connecting metal fitting S are used for the child girder P2 removal part of the cable rack P connected at a right angle. This is a method of constructing a cable rack including the steps of mounting the reinforcement sub-beam Q.

The connecting metal fitting S has an abutment plate S1 that abuts the rib piece P11 extending from the bottom surface of the parent girder P1 to the left and right, and a child girder P2 placed on the upper surface of the rib P11.
It comprises a fixing metal fitting S2 which penetrates from the upper surface of the end portion to the contact plate S1 and is fixed.

Further, another connecting fitting S is one of the child spar P2.
A substantially U-shaped clamping plate S10 for clamping the upper and lower surfaces from the side surface
And a fixing metal fitting S20 which vertically penetrates the open end of the sandwiching plate S10 and fixes both sides of the end portion of another slave girder P2 inserted into the inside from the open end. It is what

[0008]

That is, according to claim 1 of the present invention, the parent girder P
The child girder P2 cut and removed from 1 is used as the reinforcing child girder Q.

A connecting metal fitting S for connecting the reinforcing child girder Q and other child girders to the parent girder P1 has a rib of the parent girder P1 at the end of the child girder P2 sandwiched between the abutment plate S1 and the fixing metal fitting S2. Connect to piece P11.

Further, one reinforcing sub-beam Q and another sub-beam G2
Is connected to the other child spar P2 by a connecting plate S1.
Fixing bracket S20 holds child girder P2 sandwiched between 0s with child girder P2.
Fixed to.

[0011]

Embodiments of the present invention will now be described in detail with reference to the drawings.

Reference numeral P is a cable rack which is formed in a ladder shape by the main beam P1 and the child beam P2. When connecting the cable racks P at a right angle, first, the parent girder P1 is cut and removed so as to come into contact with the bent state, and the removed child girder P2 is separated from the parent girder P1 to provide an independent reinforcing element. The digit Q is formed (see FIG. 1A).

Next, the cut ends of the parent beam P1 are connected to each other. At this time, in order to connect the parent beams P1 to each other, for example, an L fitting R or the like is attached to the connection end of the parent beam P1 and connected (see FIG. 1B).

Then, the reinforcing accessory spar Q is attached to the portion of the connected cable rack P where the accessory spar P2 is removed (see FIGS. 1C and 2) by using the connecting fitting S.

At this time, in the case of using the cable rack P in which the parent beam P1 and the child beam P2 are fixed by the tapping screw P3, the reinforcing child beam Q is connected by the tapping screw P3 at a place where the tapping screw P3 can be used. (Fig. 2
reference).

The connecting metal fitting S includes an abutting plate S1 which abuts from a bottom surface of a rib piece P11 which extends to the left and right of the bottom surface of the main beam P1.
The rib piece P11 includes a fixing metal fitting 2 that is fixed to the contact plate S1 by penetrating from the upper surface of the end portion of the child girder P2 placed on the upper surface of the rib (see FIG. 3). The contact plate S1 shown in the figure uses a rectangular metal plate, and has an insertion hole 1A through which the fixing member 2 can be inserted. Further, the fixing metal fitting S2 uses a U-shaped bolt, and from the upper surface of the sub beam P2 to both side surfaces of the fixing metal fitting S2.
Surrounded by 2. This sub beam P2 is a rib piece P
This rib piece P11 is placed on the upper surface of the inner side of the rib 11.
The abutment plate S1 abuts the lower surface of the (see FIG. 4). And
A locking projection 1B for locking the outer edge of the rib piece P11 is provided on the contact plate S1. Further, in order to make the sub-sill P2 fit better when the sub-sill P2 is tightened by the fixing metal fitting S2,
An abutment projection 1C is provided so as to abut the lower surface of the child beam P2. Furthermore, the left and right ends of the contact plate S1 are bent to reinforce the reinforcing piece 1.
D is provided (see FIG. 5).

The other connecting fitting S is one of the child spar P2.
A substantially U-shaped clamping plate S10 for clamping the upper and lower surfaces from the side surface
And a fixing metal fitting S20 which vertically penetrates the release end of the sandwiching plate S10 and fixes both sides of the end portion of another slave girder P2 inserted into the inside from the open end (see FIG. 6). The sandwich plate S10 shown in the figure uses the same metal plate body as the contact plate S1,
An insertion hole 10A for inserting the fixing metal fitting S20 is opened. Then, a reinforcing rib 10B is provided on the plate surface of the fixing metal fitting S20 which is in contact with the child beam P2, and a supporting projection 10C which is in contact with the child beam P2 is provided at the center of the plate surface so as to project.
The open end of 20 tends to open (see Figure 7). Further, the corner of the open end is bent to provide the reinforcing piece 10D (see FIG. 8).
reference). The fixing metal fitting S20 uses the same U-shaped bolt as the fixing metal fitting S2 so that both side surfaces from the upper surface of the spar P2 are surrounded by the fixing metal fitting S20.

The connecting fitting S of the present invention connects the small reinforcing beam Q separated from the cut cable rack P,
It is also used when connecting small girders prepared separately from the cable rack P.

[0019]

The present invention achieves the original object by having the above-mentioned configuration. That is, according to the first aspect, it becomes possible to attach the sub-beams at the stage of constructing the cable rack or after the constructing as needed. Moreover, since the child girder uses the one attached to the cable rack,
There is an advantage in that rational construction is possible by reusing the child girder that has been scrapped up to now, and that only the cutting process of the parent girder is required.

Further, according to the second and third aspects, since the mounting can be performed without using the hanging bolts or the inserts, the mounting work becomes easy.

As described above, according to the present invention, it is possible to attach the sub-beams as needed even after or during the construction of the cable rack, and moreover, it is possible to easily attach the spar without using hanging bolts or inserts. It has various industrially beneficial effects such as being able to.

[Brief description of drawings]

FIG. 1 is a process drawing showing a construction method of the present invention.

FIG. 2 is a plan view of a cable rack assembled by the construction method of the present invention.

FIG. 3 is a partially cutaway perspective view showing a use state of a connecting fitting connected to a main girder.

FIG. 4 is a cross-sectional view showing a use state of a connecting fitting connected to a main girder.

FIG. 5 is an exploded perspective view showing a connecting fitting connected to the parent girder.

FIG. 6 is a cutaway perspective view showing a use state of a connecting fitting connected to a child spar.

FIG. 7 is a cross-sectional view showing a use state of a connecting fitting connected to the spar girder.

FIG. 8 is an exploded perspective view showing a connecting fitting to be connected to a child spar.

[Explanation of symbols]

 P Cable rack P1 Parent girder P2 Child girder P3 Tapping screw P11 Rib piece Q Reinforcing girder R L metal fitting S Connecting metal fitting S1 Abutment plate 1A Insertion hole 1B Locking projection 1C Abutment projection 1D Reinforcing piece S2 Fixing metal fitting S10 Clamping plate 10A insertion hole 10B rib 10C support protrusion 10D reinforcing piece S20 fixing metal fitting

Claims (3)

[Claims] 1. A method of reinforcing a child girder when connecting cable racks formed of a parent girder and a child girder in a bent state, in which the end portions of the cable rack are brought into contact with each other in a right angle shape. Cut and remove the girder, separate the sub-girder of this removed part from the parent girder to form an independent reinforcing sub-girder, and reinforce with connecting metal fittings in the part of the cable girder removed at right angles and connected to the girder A method for constructing a cable rack, which is equipped with armature girders. 2. A contact plate that abuts from a lower surface on a rib piece that projects to the left and right of the bottom surface of the main girder, and a contact plate that penetrates the abutment plate from the upper surface of the end of the child girder that is placed on the upper surface of the rib. A mounting bracket for a cable rack, which comprises a fixing bracket for fixing. 3. A substantially U-shaped sandwiching plate for sandwiching the upper and lower surfaces of one of the spar girders from the side, and a release end of this sandwiching plate which penetrates vertically and is inserted into the inside from the open end. A mounting bracket for a cable rack, which comprises a fixing bracket for fixing both ends of the child girder end part.