KR102473561B1 - Seismic cable tray - Google Patents

Abstract

The present invention relates to an earthquake-proof cable tray. The earthquake-proof cable tray comprises: a plurality of hangers (10) which are fixed to an anchor bolt (B) fixed to an anchor (A) embedded in a ceiling slab (S) at regular intervals while being equipped with an earthquake-proof means; and a cable tray (20) supported by the hanger (10). The hanger (10) includes a hanger bolt (100), a hanger member (110), and an earthquake-resistant means, and the hanger member (110) is supported by the hanger bolt (100) with the earthquake-resistant means. While the hanger bolt (100) is connected to the anchor bolt (B) fixed to the anchor (A) of the ceiling slab (S) through a connecting member (30), the connecting member (30) has one end portion fixed to an arbitrary position of the anchor bolt (B), and the other end portion fixed to an arbitrary position of the hanger bolt (100). The cable tray (20) has strong durability as frames (500, 501) are formed in a rectangular tube body and are connected by a connecting piece (220). The cable tray (20) has strong durability as frames (500, 501) are formed in a rectangular tube body and are connected by a connecting piece (220).

Description

Seismic cable tray {Seismic cable tray}

The present invention relates to an earthquake-resistant cable tray, and more specifically, as the frame of the cable tray is formed in a rectangular tube body and seated on a hanger, the position of the hanger can be fixed at an arbitrary position by a connecting member, and the hanger member is supported on an elastic member between support members fixed to anchor bolts to compress the elastic member and attenuate vibration and impact, thereby preventing deformation and breakage of the cable tray.

In general, cable trays for electrical wiring are installed in the construction of buildings such as box buildings, large buildings and factories.

Cable trays are installed by means of hangers secured to the ceiling slab. In the hanger for installing the cable tray, the hanger member is fastened to an anchor bolt fixed to an anchor buried in a ceiling slab by a fixing member such as a nut, and the cable tray is fixed to a lower portion of the hanger member.

The installation height of the cable tray is determined by the position of the hanger member fixed to the anchor bolt, and it is necessary to adjust the installation height according to the installation location. At this time, the installation position of the cable tray can be adjusted by adjusting the position where the hanger member is fixed to the anchor bolt, but considering the length of the anchor bolt, the height adjustment is bound to be very limited. However, if the length of the anchor bolt is increased, the cable tray can be installed in a low position, but it is impossible to fix it in a high position because the length is increased.

In addition, when the cable tray is transmitted as it is without absorbing and buffering even a small vibration, if the seismic design for earthquake is not considered, the hanger structure is highly likely to be deformed or damaged as it is transmitted to the cable tray.

Damage to structures including cable trays causes heavy property damage and increases the risk of human life as relatively heavy steel structures or wires fall.

Therefore, the cable tray should be equipped with an earthquake-resistant device to prepare for dangerous situations caused by earthquakes.

A cable tray having an earthquake-resistant means is proposed in Korean Patent Korean Patent No. 10-1860056 for an earthquake-resistant cable tray system,

A cable tray made up of a plurality of hangers connecting and supporting a pair of side frames spaced apart at a certain distance to the left and right, coupled to the central part of the hanger, and a computerized bolt coupling hole formed on the top, longitudinal or transverse A coupling member having a support coupling portion formed in at least one of the directions, a computer bolt having one end coupled to the computer bolt coupling hole and the other end fixed to the ceiling, and one end fixed to the longitudinal support coupling portion of the coupling member. And, the other end is fixed to the longitudinal support fixed to the ceiling using a longitudinal fixing bracket and to the transverse support coupling part of the coupling member, and the other end is transversely fixed to the ceiling using a transverse fixing bracket. Including the support, the cable is seated through the open side surfaces of the cable tray.

These seismic cable trays cannot be height-adjustable, and strong vibration of the cable tray due to seismic waves cannot be prevented with only the structure of the longitudinal support and the transverse support, so that the effective earthquake resistance cannot be performed.

As another example of an earthquake-resistant cable tray, Korean Patent No. 10-2253617 proposes an earthquake-resistant structure of a cable tray.

The cable tray includes a supporting member supported by a sheathing bolt fixed to a bracket fixed to the ceiling and a cable tray mounted inside the sheathing member, and a coated seismic pad and an outer sheath are formed on the sheathing bolt, An upper earthquake-resistant part and a lower earthquake-resistant part are formed on the inside and outside of the bracket so that the upper part is fixed to the bracket, and the support member is installed horizontally on the upper surface of the support member, and exposed to the upper surface of the square body on which the cable tray is mounted It is configured to include a seismic isolation block comprising at least one groove portion and a ball portion that is slidably inserted into the groove portion and partially protrudes upward from the square body and is rotatable.

The cable tray having such an earthquake-resistant structure can protect the cable tray in the event of an earthquake by buffering the support means for supporting the cable tray when the building moves due to an earthquake. It can be adjusted, but when the hanger is located at the top, the appearance is not good because the bolts are exposed to the bottom of the cable tray for a long time, and there is a risk of safety accidents due to the exposed bolts.

KR 10-1860056 B1 (2018. 05. 15.) KR 10-2253617 B1 (2021. 05. 21.)

An object of the present invention is to provide an earthquake-resistant cable tray in which the installation position of the cable tray can be adjusted using only anchor bolts of a standardized size and length without the need to extend the anchor bolts.

Another object of the present invention is to install a plurality of elastic members on the hanger member in order to solve the problems found in conventional seismic cable trays, and to make the elastic modulus of each elastic member different from each other so that when vibration or shock occurs, it is sequentially displaced and seismic action This is to provide a seismic cable tray that can safely protect the hanger structure from earthquakes or other external forces by making it possible to have a safe earthquake-resistant design.

Another object of the present invention is to provide a seismic cable tray having a structure capable of exhibiting robust durability by forming a frame constituting the cable tray in a rectangular tube body and connecting both frames with a plurality of connecting rods.

The object and the technical problem to be achieved by the present invention are not limited to the technical problem described above. Therefore, other technical problems not mentioned will be clearly understood by those skilled in the art from the description below.

An earthquake-resistant cable tray for achieving the object of the present invention includes a plurality of hangers equipped with earthquake-resistant means and fixed to anchor bolts fixed to anchors embedded in a ceiling slab at regular intervals, and a cable tray supported by the hangers. to include

According to the technical features of the present invention, the hanger is provided with a hanger member, a hanger bolt, and an earthquake-resistant means, the hanger member is supported by the hanger bolt by the earthquake-resistant means, and the hanger bolt is connected to an anchor bolt fixed to an anchor of a ceiling slab. Connected as a member, one end of the connecting member is fixed to an arbitrary position of the anchor bolt, and the other end is fixed to an arbitrary position of the hanger bolt so that the height of the installation position can be adjusted.

According to a technical feature of the present invention, the hanger includes an opening portion in which one side of the hanger member is opened, and a frame of the cable tray is inserted and seated through the opening portion.

According to the technical features of the present invention, the vertical panel is fixed to the open portion of the hanger member.

According to the technical features of the present invention, the hanger member is formed with a fixing hole drilled vertically and long in both vertical portions facing each other, includes a first support member and a second support member, and includes a first support member and a second support member. is inserted into the fixing hole and guided to a vertical part forming the fixing hole to be movable up and down, and the earthquake-resistant means is interposed between the first support member and the second support member coupled to the hanger member so as to be able to move up and down. It includes a plurality of elastic members that are, but the first elastic member is interposed between the hanger member and the first support member, including that the second elastic member is interposed between the first support member and the second support member.

According to a technical feature of the present invention, the earthquake-resistant means further includes a third elastic member interposed between the hanger member and the connecting member.

According to the technical features of the present invention, the first support member is coupled to the fixing hole to be slidable up and down, and the second support member is fastened to the hanger bolt at the bottom of the first support member to the fixing hole. It includes being coupled to be able to slide up and down.

According to the technical features of the present invention, the first elastic member, the second elastic member, and the third elastic member are formed with different elastic moduli, respectively, and are sequentially displaced from the elastic member having a small elastic modulus when vibration and shock occur, and seismic action is performed. It is characterized by doing

According to the technical feature of the present invention, in the cable tray, a pair of frames are connected to a plurality of connecting rods, and a plurality of insertion grooves formed by facing each other with vertical grooves and horizontal grooves are formed at regular intervals on the upper part of the pair of frames. And, the connecting rod is characterized in that a vertical portion and a horizontal portion inserted into the vertical groove and the horizontal groove are formed.

According to the technical features of the present invention, the frame is characterized in that it is formed of a tubular body having a rectangular cross section.

According to the earthquake-resistant cable tray of the present invention, while being seated on a hanger using a frame of a cable tray formed of a square tube, the position of the hanger can be fixed at an arbitrary position by a connecting member. In addition, the hanger member is supported by a plurality of elastic members in the support member fixed to the anchor bolt, and in order to install the ceiling panel on the ceiling slab of the building, the plurality of elastic members are sequentially applied to the vibration or impact of the earthquake in the hanger installed on the ceiling. It is possible to prevent deformation and damage of installed facilities by buffering and earthquake-resistant action.

1 is a perspective view of a partially separated cable tray of the present invention
Figure 2 is a perspective view of a part of the hanger of the present invention separated
3 is an exploded perspective view of the hanger of the present invention
4 is a partially exploded perspective view of the cable tray of the present invention
5 is a front cross-sectional view of the installation state of the present invention
6 is a cross-sectional side view of the installation state of the present invention
Figure 7 is an enlarged cross-sectional view showing a coupled state of the frame and the connecting rod of the present invention

An embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view of a partially separated cable tray of the present invention, FIG. 2 is a perspective view of a partially separated hanger of the present invention, and FIG. 3 shows an exploded perspective view of the hanger of the present invention.

1 and 2, the earthquake-resistant cable tray of the present invention is composed of a hanger 10 and a cable tray 20.

A plurality of hangers 10 are installed at regular intervals and, as is well known, are coupled to anchor bolts (B) fixed to a plurality of anchors (A) buried in the concrete of the ceiling slab (S) at regular intervals.

Referring to FIG. 3, the hanger 10 is fixed to the ceiling slab S, and includes a hanger bolt 100 connected to the anchor bolt B, a hanger member 110, a support member 120, and an earthquake-resistant means. It consists of including.

As is well known, the hanger bolt 100 is coupled to the anchor A buried in the concrete of the ceiling slab S.

In the hanger member 110, vertical portions 111 and 112 parallel to each other are connected to a horizontal portion 113 to form a space in which an earthquake-resistant means is installed, and the vertical portion 112 on one side is connected to the vertical portion 111 on the other side. It is formed longer than below.

Fixing holes 114 and 115 formed to grind up and down to install the first support member 121 and the second support member 122 are bored in the vertical portions 111 and 122 facing each other side by side.

A bolt insertion hole 116 through which the hanger bolt 100 is guided is formed at the center of the horizontal portion 113.

The lower part of the hanger member 110 is bent to form a space in which the upper part is opened to form a seating portion 117 on which the cable tray 20 is seated, and the vertical portion 111 and the seating portion 117 on one side are bent. An opening 118 into which the cable tray 20 is introduced is formed between the ends.

The first support member 121 is formed of a plate-like body, the width of the left and right sides is formed to approximately the same length as the width of the vertical portions 111 and 112 formed on the hanger member 110, and the anchor bolt 100 is in the center. A through hole 1201 through which ) passes is formed.

And after being inserted into the fixing hole 114 on all sides, guide grooves 1201 guided to the vertical parts 111 and 112 forming the fixing hole 114 are formed, so that the fixing holes of the vertical parts 111 and 112 ( 114) is coupled to be movable up and down.

The first support member 121 may be formed in a circular shape, such as a washer, even if the shape is not shown.

The second support member 122 is also formed in a plate-like body like the first support member 121, and the left and right widths are almost the same as the widths of the vertical portions 111 and 112 formed on the hanger member 110. In the center, a screw hole 1202 into which the anchor bolt 100 is screwed is formed.

And after being inserted into the fixing hole 114 on all sides, guide grooves 1203 guided to the vertical parts 111 and 112 forming the fixing hole 114 are formed, so that the fixing holes of the vertical parts 111 and 112 ( 114) is coupled to be movable up and down.

That is, the first support member 112 is coupled to the fixing holes 114 and 115 to be slidable up and down, and the second support member 122 is coupled to the lower portion of the first support member 112. It is fastened to the anchor bolt 100 and coupled to the fixing holes 114 and 115 so as to slide vertically.

In such a hanger 10, the hanger member 110 is supported by the hanger bolt 100 by an earthquake-resistant means, and the hanger bolt 100 is an anchor bolt (B) fixed to the anchor (A) of the ceiling slab (S). And connected to the connecting member (30).

In the connection member 30, the upper and lower ends of the vertical portion 300 are bent horizontally to form an upper horizontal portion 310 and a lower horizontal portion 320, thereby forming an anchor bolt B and a hanger bolt 100. ) is connected.

A through hole 311 for connecting the anchor bolt B is formed in the upper horizontal portion 310, and a screw hole 321 for connecting the hanger bolt 100 is formed in the lower horizontal portion 320.

An anchor bolt (B) is inserted into the through hole 3110 of the upper horizontal portion 310, and then the anchor bolt 100 is moved by the nuts 330 and 331 fastened to the anchor bolt B from above and below the upper horizontal portion 310. fixed in any position.

The screw hole 321 of the lower horizontal portion 320 is fastened with the hanger bolt 100 and fixed at an arbitrary position of the hanger bolt 100 so that the height at which the hanger 10 is installed can be adjusted.

The earthquake-resistant means includes a first elastic member 410 and a second elastic member 420 interposed between the first support member 121 and the second support member 122 coupled to the hanger member 110 so as to be able to move up and down. made up of

The first elastic member 410 is interposed between the hanger member 110 and the first support member 121, and the second elastic member 420 is between the first support member 121 and the second support member 122. are interposed in

Preferably, a third elastic member 430 is further formed between the hanger member 110 and the connection member 30 as the earthquake-resistant means.

The first elastic member 410, the second elastic member 420, and the third elastic member 430 are preferably formed as compression coil springs and have different modulus of elasticity, respectively, so that the elastic modulus is small when vibration and shock occur. It is displaced sequentially from the member and can perform an earthquake-resistant action.

As such, since the elastic members have different moduli of elasticity, the elastic member having a small modulus of elasticity is displaced from the elastic member having a large modulus of elasticity when vibration and shock occur, thereby acting as an earthquake resistance, so that vibration and impact can be effectively damped.

In the hanger 10, the cable tray 20 is seated through an opening 118 in which one side of the hanger member 110 is opened.

4 shows an exploded perspective view of a part of the cable tray of the present invention.

Referring to FIG. 4 , in the cable tray 20 , a pair of frames 200 and 201 are connected to a plurality of connectors 220 .

In the upper portion of the pair of frames 200 and 201, a plurality of insertion grooves 210 formed by facing the vertical grooves 211 and 211a and the horizontal grooves 212 and 212a are formed at regular intervals so that the connecting rod 220 can be inserted.

The connecting rods 220 inserted into the insertion grooves 210 of the frames 200 and 201 are fixed to the frames 200 and 201 by riveting.

The frames 200 and 201 are formed as tubular bodies having a rectangular cross section, so that the cable tray 20 can have strong durability.

The connecting rod 220 is formed with a vertical portion 221 and a horizontal portion 222 inserted into the vertical grooves 211 and 211a and the horizontal grooves 212 and 212a.

The frames 200 and 201 of the cable tray 20 are seated and installed on the seating portion 117 through the opening portion 118 formed in the hanger member 110 .

Meanwhile, in the hanger 10, after the cable tray 20 is seated, the vertical panel 50 is fixed to the front of the opening 118 by riveting or screws.

The vertical panel 50 is formed long along the longitudinal direction of the cable tray 20 and is used after being cut to a required length. A cable guided to the cable tray 20 is prevented from escaping to the outside of the cable tray 20 .

The frames 200 and 201 constituting the cable tray 20, the connecting rod 220, and the vertical panel 50 are preferably made of highly corrosion-resistant galvanized steel sheet or hot-dip galvanized sheet.

Let's look at the process of assembling the present invention configured as described above.

First, fix the anchor bolt (B) to the anchor (A) embedded in the ceiling slab (S).

Then, the anchor bolt (B) is inserted into the through hole 311 formed in the upper horizontal portion 310 of the connecting member 30, fixed with nuts 330 and 331 at an arbitrary position, and then the lower horizontal portion 320 The hanger bolt 100 is fastened to the formed screw hole 321 .

At this time, the hanger 10 is installed in the hanger bolt (B).

In the hanger 10, the first elastic member 410 and the second elastic member 420 are installed through the space between the vertical parts 111 and 112 at the bottom of the hanger member 110, and the first support member 121 ) and the second support member 122 are installed through the fixing holes 114 and 115 of the vertical parts 111 and 112.

Specifically, the first elastic member 10 is positioned below the horizontal portion 113 through the space between the vertical portions 111 and 112, and the first support member 121 is erected to form the vertical portions 111 and 112. By inserting into the fixing holes 114 and 115 formed in the first support member 121, the through hole 1200 reaches the central position between the both vertical parts 111 and 112, or the guide grooves 1201 on all sides are fixed. When reaching the balls 114 and 115, the first support member 121 is rotated in the 90° direction so that the upper surface supports the lower portion of the first elastic member 410.

In the first support member 121, the hanger bolt 100 is simply inserted through the central through hole 1200, and the guide grooves 1201 and 1203 are inserted into the fixing holes 114 and 115 of the hanger member 110. According to the buffering action of the first elastic member 410 and the second elastic member 420, it is possible to slide up and down.

Then, the upper part of the second elastic member 420 is positioned under the first support member 121 through the space between the vertical parts 111 and 112, and the second support member 122 is erected so that the vertical part 111 , 112), the screw hole 1202 of the second support member 122 reaches the central position between the two vertical parts 111 and 112, or the guide grooves in all directions ( When 1203 reaches the fixing holes 114 and 115, the second support member 122 is rotated in the 90° direction so that the upper surface supports the lower portion of the second elastic member 420.

Then, the hanger bolt 100 is inserted through the bolt insertion hole 116 of the hanger member 110, the first elastic member 410, the through hole 1200 of the first support member 121, and the second elastic member 420 , Assemble the hanger 10 by sequentially passing through the screw holes 1202 of the second support member 122.

Then, the third elastic member 430 is positioned between the lower end 310 of the connecting member 30 and the horizontal part 113 of the hanger 10, and the hanger bolt 100 is attached to the lower end of the connecting member 30. The hanger 10 is installed in an arbitrary position by fastening to the screw hole 321 formed in 320.

These hangers 10 are installed in series with a set of pairs facing each other at regular intervals, and the openings 118 of the hangers 10 facing the frames 200 and 201 of the cable tray 20 are used. to the mounting portion 118 and fix the vertical panel 50 to the opening portion 118.

In the present invention, the anchor bolt B and the hanger bolt 100 are connected using the connecting member 30 so that the hanger 10 can be conveniently installed.

In addition, the seismic means provided in the hanger 10 operates sequentially when vibration or shock occurs because the elastic moduli of the first elastic member 410, the second elastic member 420, and the third elastic member 430 are formed to be different from each other. Since the seismic function is exhibited, rapid displacement against an earthquake is prevented and seismic function can be stably performed, thereby protecting the cable tray and the cables from earthquake damage.

In addition, as the frames 200 and 201 of the cable tray 20 are formed in a square tube body, durability against earthquakes can be maintained by a sturdy structure in which the connecting rod 220 is coupled to the insertion groove 210, and the hanger 10 It is to provide a structural shape that can be easily seated on the seating portion 118 of the.

So far, the present invention has been mainly looked at with respect to preferred embodiments.

The embodiments described in this specification and the configurations shown in the drawings relate to one of the most preferred embodiments of the present invention, and do not represent all of the technical ideas, so that various alternatives can be made without departing from the scope of the present invention. It should be understood that there may be equivalents and variations of examples.

Therefore, the present invention is not limited to the presented embodiments, and within the equivalent scope of the technical idea of the present invention and the technical idea described in the claims to be described below by those skilled in the art to which the present invention belongs Since there may be embodiments in which various modifications and changes are possible, the scope of the present invention should be interpreted by the claims described to include these many modifications.

10: hanger
110: hanger member 111, 112: vertical part
113: horizontal part 114, 115: fixed hole
116: bolt insertion hole 117: seating part
118: opening 121: first support member
122: second support member 133: horizontal portion
1200: through hole 1201: guide groove
1202: screw hole 1203: guide groove
20: cable tray
200, 201: frame 210: insertion groove
211, 211a: vertical grooves 212, 212a: horizontal grooves
220: connecting rod 221: vertical part
222: horizontal part 30: connecting member
300: vertical part 310: upper horizontal part
320: lower horizontal portion 311: through hole
321: screw hole 330, 331: nut
410: first elastic member 420: second elastic member
430: third elastic member
50: vertical panel

Claims (10)

A plurality of hangers (10) fixed to anchor bolts (B) fixed to anchors (A) embedded in the ceiling slab (S) at regular intervals with earthquake-proof means; In the seismic cable tray including the cable tray 20 supported by the hanger 10,
The hanger 10,
The hanger bolt 100, the hanger member 110, and the earthquake-resistant means are provided so that the hanger member 110 is supported by the hanger bolt 100 by the earthquake-resistant means,
In the hanger member 110, the first support member 121 is coupled to the fixing holes 114 and 115 that are vertically drilled in both vertical parts 111 and 112 facing each other so that the first support member 121 can slide vertically, and the second The support member 122 is coupled to the hanger bolt 100 at the bottom of the first support member 121 to be slidable up and down,
The seismic means,
A first elastic member 410 interposed between the hanger member 110 and the first support member 121;
It consists of a second elastic member 420 interposed between the first support member 121 and the second support member 122,

The upper and lower ends of the vertical part 300 are horizontally bent to form an upper horizontal part 310 and a lower horizontal part 320 in order to adjust the location where the seismic means and the cable tray 20 are installed. Further comprising a connecting member 30,
The upper horizontal portion 310 of the connecting member 30 is connected to an anchor bolt (B) fixed to the anchor (A) of the ceiling slab (S),
The lower horizontal part 320 is connected to the hanger bolt 100 so that the position where the earthquake-resistant means and the cable tray 20 are installed can be adjusted.

The hanger 10,
An opening 118 is formed in which one side of the hanger member 110 is opened, and the frames 200 and 201 of the cable tray 20 are inserted and seated through the opening 118,
The vertical panel 50 is fixed to the opening 118 of the hanger member 110,

The cable tray 20,
A pair of frames 200 and 201 are connected by a plurality of connecting members 220,
In the upper portion of the pair of frames 200 and 201, a plurality of insertion grooves 210 formed by facing the vertical grooves 211 and 211a and the horizontal grooves 212 and 212a are formed at regular intervals,
The connecting member 220,
The vertical portion 221 and the horizontal portion 222 are inserted into and coupled to the vertical grooves 211 and 211a and the horizontal grooves 212 and 212a,

The seismic means,
Further comprising a third elastic member 430 interposed between the hanger member 110 and the connection member 30 above the first elastic member 410 and the second elastic member 420,
The first elastic member 410, the second elastic member 420 and the third elastic member 430,
An earthquake-resistant cable tray including one having a different modulus of elasticity and, when vibration and shock occur, elastic members having a smaller modulus of elasticity are sequentially displaced to perform an earthquake-resistant action. delete delete delete delete delete delete delete delete delete

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