JP2003018720A - Length adjusting rack - Google Patents

Abstract

PROBLEM TO BE SOLVED: To freely adjust the length of a rack at a site, which is obtained in the manufacturing of the rack, for enabling a connection by extremely simple work, and to obtain strength comparable to a conventional rack. SOLUTION: Connecting fittings 1 are arranged on external side faces of the end of a main girder P1 and the end of the other main girder P1 of the other rack P adjacent to the end of the main girder P1 so as to be folded on the ends to connect them. One end of the connecting fitting 1 is fixed with a connecting bolt R that penetrates one of the main girders P1 and the end of the connecting fitting 1. The other main girder P1 of the other rack P is slidably stacked on the other end of the connecting fitting 1. The other main girder P1 of the other rack P and the other end of the connecting fitting 1 are fixed by a fitting 2 that sandwiches and fixes the lower end of the connecting fitting 1 and the lower edge P1b of the main girder P1 of the main girder P.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a length-adjusting rack in which the length of the rack can be freely adjusted on site.

[0002]

2. Description of the Related Art Conventionally, for the construction of a rack such as a cable rack or a refrigerant pipe rack, there is a fixed length type rack formed in advance to a predetermined size, and a processing type rack processed on site according to the construction situation. Furthermore, it is constructed by combining with a custom-made rack whose dimensions other than the standard length are custom-made.

In order to connect these racks, band-plate-like connecting fittings are connected to the main girders of the racks. This connecting fitting is placed on the side surfaces of the ends of the parent girders to be connected, and is fastened with a connecting bolt that penetrates the connecting fitting and the parent girder.
When connecting any of the above types of racks, it is necessary to previously open a through hole into which the connecting bolt can be inserted at the end of the main beam. Normally, it is necessary to open a total of 8 to 12 through holes at the ends of the left and right parent girders in accordance with the positions of the through holes provided in the connecting fitting.

On the other hand, a cable rack connector in which a connecting metal fitting can be attached without using such a connecting bolt is described in Japanese Utility Model Publication No. 6-44317. This connecting tool is provided with a connecting tool having a C-shaped cross-section that fits outside the end of the main girder, and is crimped and fixed by a screw protruding from the lower end of this connecting tool toward the lower edge of the main girder. The structure is adopted.

Further, Japanese Patent No. 2833417 discloses a joint fitting for a cable rack which facilitates the connecting work of the connecting fittings fixed by connecting bolts. According to this joint metal fitting, a pressing piece is provided at the upper end of the joint metal fitting which is overlaid on the parent girder, and the upper and lower end portions of the parent girder are forcibly crimped by the pressing piece and the engaging piece at the lower end of the joint metal fitting to form the joint metal fitting. It is intended to temporarily fix and use the pressing force to reduce the number of connecting bolts to be used.

[0006]

In most cases of rack construction work, it is not possible to construct with a rack of a standard length type, and a rack of a machining type processed on-site as described above or a custom-made rack is manufactured. It will be constructed by combining custom-made racks. However, in order to manufacture these processing type and custom type racks, the length of the rack is cut to the size required at the site, and the parent girder is adjusted according to the position of the through hole provided in the connecting metal fitting. Since it is necessary to open 8 to 12 through-holes at the end portions, it takes a lot of time and labor for such processing.

Further, since most of the rack construction work is performed at high places, it has been desired to provide a rack which can be simplified by replacing the rack with a large number of connecting bolts. . However, in the rack connector that allows the attachment of the connecting metal fittings without using the above-mentioned connecting bolt, the connection is made only by crimping and fixing with the screw projecting in the direction of the main girder from the connecting tool, so it is essential. There is a problem in connection strength. Moreover, because it is crimped and fixed with screws,
Strong torque is required for tightening this screw,
On the contrary, the connection work may require a lot of trouble and labor. Also, deformation of the parent girder is expected due to the crimping force of the screw due to over-tightening.

On the other hand, according to the joint metal fitting forcibly crimping the upper and lower end portions of the parent girder with the pressing piece, the joint metal fitting itself can be temporarily fixed to the parent girder, but it is a processing type rack,
The work procedure for combining custom-made racks and the like was the same as before.
In other words, the rack is cut, and the through holes are drilled in each parent girder according to the position of the through holes in the joint fittings. The conventional troublesome work required for the machining was left as it is.

Therefore, the present invention was created to solve the above-mentioned problems, and by providing a new type rack in place of the conventional processing type or custom type rack, the length at the time of construction of the rack can be reduced on site. The purpose of the present invention is to provide a length-adjusting rack that can be freely adjusted and can be connected by an extremely simple operation, and that has a connection strength comparable to that of a conventional rack. It is a thing.

[0010]

To achieve the above object, the first means of the present invention is to form a pair of left and right parent girders P1 and a plurality of child girders Q installed between these parent girders P1. In the rack P to be formed, a connecting metal fitting 1 is provided on the outer surface of the parent girder P1 end portion and the parent girder P1 end portion of another rack P adjacent to the parent girder P1 end portion so as to be overlapped with each other, and one parent girder is provided. One end of the connecting fitting 1 is fixed by a connecting bolt R penetrating P1 and one end of the connecting fitting 1, and the other end of the connecting fitting 1 is slidably overlapped with the parent beam P1 of the other rack P to be connected. Fixing metal fitting 2 for sandwiching and fixing the lower end portion of the metal fitting 1 and the lower edge portion P1b of the main beam P1.
Then, the parent girder P1 of the other rack P and the other end of the connecting fitting 1 are fixed.

The connecting fitting 1 in the second means is a parent girder P.
From the upper end of the metal fitting body 1A, which is overlaid on the outer surface of 1, the main beam P
1. A locking piece 1B having a substantially hook-shaped cross section that locks to the upper edge P1a bent in a substantially L-shaped cross section of 1 is bent and formed, and is superposed on the bent lower edge P1b of each parent beam P1. Piece 1C
The rack for length adjustment according to claim 1, wherein the rack is formed to have a substantially L-shaped cross section.

The fixing metal fitting 2 of the third means is a locking piece 2 which is locked to the outer surface of the lower end of the metal fitting body 1A of the connecting metal fitting 1.
A fixed piece 2B bent from A to the inside of the rack P in a substantially L-shaped cross section, and a main beam P from the end of the fixed piece 2B.
1 has a sandwiching piece 2C that is folded over the upper surface of the bent lower edge portion P1b, and the lower edge portion P1b of the main beam P1 and the connecting metal fitting 1 between the sandwiching piece 2C and the fixing piece 2B. The overlapping piece 1C is sandwiched and the fixing metal fitting 2 is tightened with a fixing bolt 3 penetrating the sandwiching piece 2C and the fixing piece 2B.

A fourth means is to provide the fixing member 2 with a locking portion 2Bb at the end of the fixing piece 2B, and to connect the connecting portion 2Cb which is detachably connected to the locking portion 2Bb to the end of the sandwiching piece 2C. The fixing piece 2B and the sandwiching piece 2C are provided so as to be connectable with each other.

The fifth means is to install an auxiliary girder S between the fixing fittings 2 mounted on the left and right connecting fittings 1 so as to face each other.

The auxiliary girder S of the sixth means is a means for solving the problem that it is detachably connected to the fixing metal fitting 2 with a fixing bolt 3 for tightening the fixing metal fitting 2.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

The length adjusting rack of the present invention comprises a pair of left and right parent girders P1 and a plurality of child girders Q installed between these parent girders P1.
In addition to this, the connecting fitting 1, the fixing fitting 2, the fixing bolt 3 and, if necessary, the auxiliary girder S are used.

The connecting metal fitting 1 is a metal fitting which is connected to the outer side of the parent beam P1 of another rack P adjacent to the end portion of the parent beam P1 so as to be overlapped with each other (see FIG. 1). One end of the connecting fitting 1 is fixed by a connecting bolt R penetrating one end of the connecting fitting 1 and one parent girder P1. The connecting bolt R is a connecting hole P that is pre-drilled on the side surface of the main beam P1 of the rack P of the standard length type.
1c and the bolt insertion hole 1D which is pre-drilled in the side surface of the connecting fitting 1 are inserted and connected.

The structure of the connecting metal fitting 1 is as follows:
It is composed of a locking piece 1B and an overlapping piece 1C (see FIG. 2).
The metal fitting body 1A is a portion that overlaps with the outer side surface of the parent beam P1, and a cross-section hook that locks from the upper end portion of the metal fitting body 1A to the upper edge P1a that is bent into the substantially L-shaped cross section of the parent beam P1. The shaped locking piece 1B is formed by bending. On the other hand, the overlapped piece 1C is a portion that overlaps with the bent lower edge portion P1b of each parent beam P1 and is bent and formed in a substantially L-shaped cross section.

Then, one end of the connecting fitting 1 is fixed to the parent beam P1, and the other end of the connecting fitting 1 is slidably overlapped with the parent beam P1 of another rack P (see FIG. 1). And
The parent girder P1 of the other rack P and the connecting fitting 1 are fixed by the fixing fitting 2.

The fixing metal fitting 2 is a metal fitting for sandwiching and fixing the lower end portion of the connecting metal fitting 1 and the lower edge portion P1b of the main beam P1 (see FIGS. 2 and 3). The main structure of the fixing fitting 2 is a locking piece 2A, a fixing piece 2B, and a sandwiching piece 2C (see FIG. 2).
The locking piece 2A is a portion to be locked to the outer surface of the lower end portion of the metal fitting body 1A of the connecting metal fitting 1, and the fixing piece 2B is bent in a substantially L-shaped cross section from the locking piece 2A toward the inside of the rack P. There is. Further, from the end of the fixed piece 2B, a sandwiching piece 2C is formed by bending on the upper surface of the bent lower edge P1b of the main beam P1. Then, the lower edge P1b of the main beam P1 and the overlapping piece 1C of the connecting fitting 1 are sandwiched between the sandwiching piece 2C and the fixed piece 2B.

The fixing fitting 2 shown in FIG. 3 is provided with a hole-shaped locking portion 2Bb at the end of the fixing piece 2B, and a substantially hook-shaped connecting portion 2Cb which is detachably connected to the locking portion 2Bb is sandwiched. It is provided at the end of the piece 2C. Then, these locking portions 2Bb
The fixing piece 2B and the sandwiching piece 2C are configured to be freely connectable by locking the connecting piece 2Cb and the connecting portion 2Cb. At this time, the shapes of the engaging portion 2Bb and the connecting portion 2Cb are formed to be opposite to each other, and for example, the hook-like engaging portion 2 is attached to the hole-like connecting portion 2Cb.
Bb may be provided. Further, it is possible to select other means for freely connecting the fixing piece 2B and the sandwiching piece 2C.

The fixing fitting 2 shown in FIG. 6 is formed by bending the sandwiching piece 2C from the end of the fixing piece 2B and integrally forming it. In this case, since the fixing bracket 2 is integrated, mounting,
You can save the trouble of storing, transporting and storing.

Further, a fixing bolt 3 penetrating the sandwiching piece 2C and the fixing piece 2B is tightened, and the lower edge P of the main beam P1 is secured.
Fix the fixing bracket 2 to 1b. At this time, in the fixing piece 2B and the sandwiching piece 2C, the fixing bolt 3 is penetrated to open the through hole 2Ba and the through hole 2Ca, respectively. The illustrated through hole 2Ba facilitates screwing of the fixing bolt 3 by tapping. Further, when the fixing metal fitting 2 is mounted, the fixing metal fitting 2 can be temporarily fixed to the lower end portion P1b of the main beam P1 by crimping the sandwiching piece 2C in the direction of the fixing piece 2B with fingers. Further, by bending the tip end of the sandwiching piece 2C so as to contact the inner side surface of the parent beam P1, the sandwiching piece 2C and the locking piece 2A allow the lower edge portion of the parent beam P1 to move. The clamping force is increased (see Fig. 6).

The symbol S shown in FIG. 5 is an auxiliary digit. This auxiliary girder S can be prevented from rolling and the like of the connected left and right connecting fittings 1 by erected between the fixing fittings 2 attached to the left and right connecting fittings 1 so as to face each other. Especially, it can be attached to a long metal fitting 1
This is convenient for increasing the connecting strength of the connecting fitting 1. The auxiliary girder S is connected to the fixing fitting 2 by a fixing bolt 3 penetrating the fixing piece 2 and the sandwiching piece 2C of the fixing fitting 2 (see FIG. 4). The auxiliary girder S of the illustrated example is the same as the girder Q which is welded to the rack P of the standard length type, and the parent girder P1
A bolt insertion hole S1 is opened in the child spar Q before welding to be used as the auxiliary child spar S.

The auxiliary girder S shown in FIG. 4 shows a state in which it is directly connected to the fixing piece 2B of the fixing member 2. in this case,
Since the sandwiching piece 2C is removed from the fixed piece 2B and connected, the auxiliary girder S can be connected in a stable state. On the other hand, the auxiliary girder S shown in FIG. 7 shows a state in which the auxiliary girder S is connected to the fixing piece 2B via the sandwiching piece 2C of the fixing fitting 2. By connecting in this way, it is possible to increase the connection strength of the auxiliary girder S.

[0027]

The present invention achieves the original object by having the above-mentioned configuration.

That is, one end of the connecting metal fitting 1 is fixed by a connecting bolt R penetrating one of the parent metal beams P1 and one end of the connecting metal fitting 1, and the other end of the connecting metal fitting 1 is connected to the parent girder of another rack P. P
1 is slidably overlapped with each other, and the fixing girder 2 for sandwiching and fixing the lower end of the connecting fitting 1 and the lower edge P1b of the parent girder P1 is used to fix the parent girder P1 of the other rack P and the other end of the connecting fitting 1. By providing a completely new type of rack P, such as fixing and, it has become possible to freely adjust the length of the rack during construction on site.

The connecting fitting 1 has a cross section L of the main beam P1.
Since the locking piece 1B having a substantially hook-shaped cross section that is locked to the upper edge portion P1a that is bent in a V shape is bent and formed, the locking piece 1
B can be used to temporarily fix the connecting fitting 1, which facilitates mounting work of the connecting fitting 1.

Further, in the fixing metal fitting 2, the lower edge P1b of the main beam P1 and the overlapping piece 1C of the connecting metal fitting 1 are sandwiched between the sandwiching piece 2C and the fixing piece 2B, and these sandwiching pieces 2C are sandwiched. And fixing piece 2B
The lower edge P1b of the main beam P1 with the fixing bolt 3 penetrating
By tightening the fixing metal fitting 2 to the above, it is not necessary to perform the conventional process of opening a large number of through holes in the main beam P1. As a result, the rack construction time can be significantly shortened.

In the fixing metal fitting 2, an engaging portion 2Bb is provided at an end portion of the fixing piece 2B, and a connecting portion 2Cb detachably connected to the engaging portion 2Bb is provided at an end portion of the sandwiching piece 2C. Since 2B and the sandwiching piece 2C are provided so as to be connectable with each other, it is possible to enhance the sandwiching force between the fixing piece 2B and the sandwiching piece 2C, as well as the durability of the fixing fitting 2.

By mounting the auxiliary girder S between the fixing fittings 2 mounted on the left and right connecting fittings 1 so as to be opposed to each other, it is possible to prevent lateral vibrations of the connecting parts, and to connect the same as a conventional rack. Strength is obtained.

Further, the auxiliary girder S is detachably connected to the fixing metal fitting 2 with a fixing bolt 3 for tightening the fixing metal fitting 2, so that the auxiliary metal girder S together with the connecting metal fitting 1 and the fixing metal fitting 2 is attached.
Can be mounted very easily if necessary.

As described above, according to the present invention, it is possible to provide a new type rack that replaces the conventional processing type or custom-made type rack, and the length at the time of construction of the cable rack or the refrigerant pipe rack can be determined on site. Now you can adjust it freely. In addition, it is possible to perform the connection by an extremely simple operation, and various advantageous effects such as a connection strength that is comparable to that of the conventional rack can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of a connected state showing an embodiment of the present invention.

FIG. 2 is a side view of a connected state showing an embodiment of the present invention.

FIG. 3 is a perspective view showing a fixing bracket and a fixing bolt of the present invention.

FIG. 4 is a side view showing an example using the auxiliary girder of the present invention.

FIG. 5 is a perspective view showing an example using the auxiliary girder of the present invention.

FIG. 6 is a perspective view showing another embodiment of the fixing fitting in the present invention.

FIG. 7 is a side view showing another embodiment for connecting auxiliary girders of the present invention.

[Explanation of symbols] P rack P1 parent girder P1a Upper edge P1b lower edge P1c connection hole Q child digit R connection bolt S Auxiliary girder S1 Bolt insertion hole 1 Connecting metal fitting 1A Metal fitting body 1B locking piece 1C polymer fragment 1D bolt insertion hole 2 Fixing bracket 2A Locking piece 2B fixed piece 2Bb locking part 2C sandwiching piece 2Ba through hole 2Ca through hole 2Cb connection part 3 fixing bolts

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Miku Tsunoda             Stock 1-3-3 Chuo, Edogawa-ku, Tokyo             Company Brest Industrial Research Institute (72) Inventor Yoshiki Ishida             Stock 1-3-3 Chuo, Edogawa-ku, Tokyo             Company Brest Industrial Research Institute F-term (reference) 5G357 BA04 BB01 BC01

Claims (6)

[Claims] 1. In a rack such as a cable rack and a refrigerant pipe rack formed by a pair of left and right parent girders and a plurality of child girders installed between the parent girders, a parent girder end and this parent girder end Provide a connecting metal fitting that overlaps with the outer surface of the parent girder end of another rack adjacent to, and fix one end of the connecting metal fitting with a connecting bolt that penetrates one parent girder and one end of the connecting metal fitting. ,
The other side of the connecting bracket is slidably overlapped with the parent girders of other racks, and the fixing bracket that clamps and secures the lower end of the connecting bracket and the lower end of the parent girder is used to connect the parent girder of the other rack and the connecting bracket. A length adjusting rack characterized by fixing the other end. 2. The locking member having a substantially hook-shaped cross section that locks from the upper end of the metal fitting body that overlaps the outer surface of the parent girder to the upper edge of the parent girder that is bent into a substantially L-shaped cross section. The length adjusting rack according to claim 1, wherein the piece is formed by bending, and the overlapping piece that overlaps the bent lower edge of each parent beam is formed by bending in a substantially L-shaped cross section. 3. The fixing member includes a fixing piece bent from the locking piece for locking the lower surface of the metal fitting body of the connecting fitting toward the inside of the rack in a substantially L-shaped cross section, and the fixing piece. And a sandwiching piece that is folded over from the end portion of the main beam to the upper surface of the bent lower edge of the parent beam, and between the sandwiching piece and the fixed piece, the lower edge of the parent beam and the overlapping piece of the connecting metal fitting. 3. The length adjusting rack according to claim 1, wherein the fixing metal fittings are clamped together and the fixing metal fittings are tightened with fixing bolts penetrating the clamping pieces and the fixing pieces. 4. The fixing member 2 is provided with an engaging portion 2Bb at an end portion of a fixing piece 2B, and a connecting portion 2Cb detachably connected to the engaging portion 2Bb is provided at an end portion of the sandwiching piece 2C. The fixing piece 2B and the sandwiching piece 2C are provided so as to be freely connectable.
The rack for length adjustment according to any one of 1 to 3. 5. The length adjusting rack according to any one of claims 1 to 4, wherein an auxiliary girder is installed between fixing fittings mounted so as to face the left and right connecting fittings. 6. The length adjusting rack according to claim 5, wherein the auxiliary girder is detachably connected to the fixing metal fitting with a fixing bolt for tightening the fixing metal fitting.