KR20200075262A - Cable tray, rung for cable tray and method for manufacturing rung - Google Patents

Abstract

Provided is a cable tray which is easy to be manufactured in a simpler structure and increases structural rigidity while reducing weight. The cable tray comprises: a pair of side plates disposed to be spaced apart; a support connecting between the side plates; and a connection unit fixing the side plate and the support. The support includes: a frame extended long along a major axis direction and having both end portions in a minor axis direction bent to face each other to be formed to having an inner space; and a bracket integrally formed on a front end of the frame, bent at right angles to the major axis direction of the support to face the side plate, and having a hole formed on a front surface.

Description

Cable tray support, support manufacturing method and cable tray including the same{CABLE TRAY, RUNG FOR CABLE TRAY AND METHOD FOR MANUFACTURING RUNG}

The present disclosure relates to a cable tray, a cable tray support, and a method of manufacturing the support.

In general, cables of large and small diameters are disposed along the ceiling and the floor or wall for supplying power or fluids to factories, ships, and offshore structures. Cable trays are used to easily distinguish the various cables arranged in this way and to arrange them in a functional and visually pleasing manner.

The cable tray through which the cable passes must be lightweight and of sufficient strength. Otherwise, the cable tray may be deformed or damaged, and an accident such as disconnection or short circuit of the cable may occur.

The cable tray has a certain length and is composed of a pair of side rails located on the left and right sides and a cross support (rung, hereinafter referred to as a support) coupled between the side plates. The side plate and support of the cable tray are manufactured by bending a steel plate having a predetermined thickness for weight reduction, thereby reducing weight and securing rigidity.

The side plates and supports are joined together to form a cable tray. Various methods such as welding method, screw method, and fitting method are adopted as the joining method of the side plate and the support. The combination structure of the side plate and the support determines the structural rigidity of the cable tray which is the frame structure.

In the case of the welding method, the joining process is very difficult and takes a lot of time, and it is difficult to secure uniformity of strength due to difficulty in uniform welding. In addition, since welding and the like are difficult to separate and assemble, take up a lot of space during storage and transportation, and reuse is almost impossible.

In the case of a screw type, a female threaded hole is tapped on one side of a support made of iron plate to be fixed with a bolt on the side plate. This structure is easy to assemble, but it is difficult to sufficiently secure the rigidity of the tray because the bracket with the female screw hole is easily deformed or damaged by external force. In addition, in order to form a female screw hole in the support, a number of processes such as molding, bending, and tapping are required, so that it takes manpower and time, and there is a problem in that productivity is significantly reduced.

An object of the present invention is to provide a cable tray support, a method for manufacturing a support, and a cable tray including the same, which is easy to manufacture with a simpler structure.

An object of the present invention is to provide a cable tray support, a method for manufacturing the support, and a cable tray including the same, while reducing weight and increasing structural rigidity.

The object of the present invention is to provide a cable tray support, a method for manufacturing the support, and a cable tray including the same, which can increase the binding force to the bolt.

The object of the present invention is to provide a cable tray support, a method for manufacturing the support, and a cable tray including the same, so that a cut surface is not formed to prevent cable damage caused by this.

The cable tray of this embodiment may include a pair of spaced apart side plates, a support connecting between the side plates, and a connection portion fixing the side plate and the support.

The support is extended along the long axis direction and bent so that both ends of the short axis direction are opposed to each other to form a frame formed to have an interior space, and is integrally formed at the front end of the frame and bent at a right angle to the long axis direction of the support so as to face the side plate. The front may include a hole-formed bracket.

The connecting portion is a bolt that fits into the hole of the bracket through the through hole formed in the side plate at the support connection position, an insert inserted into the frame of the support and fastened to the bolt, and a fixing part fixing the insert to the frame It can contain.

The cable tray support of this embodiment extends along the long axis direction and is bent so that both ends of the short axis direction are opposed to each other, a frame formed to have an interior space, integrally formed at the front end of the frame and facing the side plate with respect to the long axis direction of the support It is bent at a right angle and is installed in a bracket formed with a hole at the front surface and in the inner spaces of both ends of the frame in the long axis direction, and a female screw hole is formed at the front surface, and an insert is fastened to the bolt through the hole in the bracket through a through hole outside the side plate. And, it may include a fixing portion for fixing the insert.

The insert may include a horizontal portion placed on the inner surface of the frame, and a vertical portion formed by bending at a right angle to the horizontal portion and vertically arranged inside the frame and having a female screw hole formed on the front surface to be engaged with the bolt.

The fixing part may include an inner jaw part and an outer jaw part protruding inward to the frame from both sides of the vertical part of the insert to fix the vertical part.

The insert may be arranged such that the tip of the horizontal portion faces the bracket.

The insert may be formed in a shape corresponding to the internal cross-sectional structure of the support.

The insert may further include a protrusion formed at the tip of the vertical portion and extending between opposite ends of the frame.

The thickness of the insert may be a relatively thick structure than the thickness of the bracket.

The method for manufacturing a support of the present embodiment, cutting both ends of the prepared iron plate to form a bracket and processing a hole in the bracket, bending the iron plate to form a frame having an internal space, and an inner jaw for fixing the insert to the frame It may include forming a portion, preparing an insert, inserting the insert into the space inside the frame, bending the bracket and forming an outer chin on the frame to fix the insert.

In the step of preparing the insert, the insert includes a horizontal portion placed on the inner surface of the frame, and a vertical portion formed by bending at a right angle to the horizontal portion and vertically arranged inside the frame and having a female screw hole formed on the front surface and fastened to the bolt. can do.

As described above, according to the present exemplary embodiment, the insert is securely fixed to the inside of the support to be fastened with the side plate and the bolt, thereby preventing the insert or the bolt from being detached by the external force or the bracket of the support from being deformed. Thus, it is possible to further strengthen the bonding force between the support and the side plate.

In addition, it is possible to prevent the cable damage due to this by simplifying the structure of the support and not forming a cut surface.

In addition, it is possible to further simplify the manufacturing process of the support, thereby reducing the cost and time required for manufacturing the support, thereby increasing productivity and product competitiveness.

In addition, it is easy to store or move each part, and it is possible to increase the workability by assembling the side plate and the support more firmly by simply fastening the bolts.

1 is a schematic perspective view showing a cable tray according to the present embodiment.
2 is a schematic perspective view showing a support of the cable tray according to the present embodiment.
3 is a schematic perspective view showing an insert of a support according to the present embodiment.
4 is a schematic side view of a support according to the present embodiment.
5 is a schematic cross-sectional view showing a coupling state between the support and the side plate according to the present embodiment.

Hereinafter, embodiments of the present invention will be described in detail. However, this is presented as an example, and the present invention is not limited thereby, and the present invention is only defined by the scope of claims to be described later. The embodiments described below may be modified in various forms within limits that do not depart from the concept and scope of the present invention. Where possible, the same or similar parts are indicated by the same reference numerals in the drawings.

The terminology used hereinafter is for reference only to specific embodiments and is not intended to limit the invention. The singular forms used herein also include plural forms unless the phrases clearly indicate the opposite. As used herein, the meaning of “comprising” embodies certain properties, regions, integers, steps, actions, elements and/or components, and other specific properties, regions, integers, steps, actions, elements, components and/or groups It does not exclude the existence or addition of.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. However, the following examples are only preferred embodiments of the present invention, and the present invention is not limited to the following examples.

1 shows a cable tray according to the present embodiment.

As shown, the cable tray 10 of the present embodiment may include a pair of side plates 20 spaced apart, a support 30 connecting the side plates 20, and a connection part fixing the side plates and the support. have.

The two side plates 20 may have the same shape. Each support 30 can also achieve the same structure. The two side plates 20 are disposed to face each other, and a plurality of supports 30 are disposed at intervals along the long axis direction of the side plates 20 to connect between the two side plates 20.

In the following description, the long axis direction refers to a direction having a relatively long length in Cartesian coordinates, and a short axis direction refers to a direction having a relatively short length in a direction perpendicular to the long axis direction.

The side plate 20 is a plate structure made of iron, and both ends of the short axis direction are bent at right angles to secure structural rigidity. The support 30 is connected to one side of the side plate 20. The shape of the side plate 20 may be variously formed.

In this embodiment, the connecting portion has a structure in which the support 30 is fixedly installed to the side plate 20 via the bolt 40.

To this end, the connecting portion is a bracket 32 formed on the support 30, the insert 50 inserted into the support 30, the side plate 20 and the bracket 32, through which the bolt is fastened to the insert 50 (40), it may include a fixing portion for fixing the insert 50 in the support (30). A side surface of the side plate 20 is formed with a through hole 22 into which the bolt 40 is fitted at a position where the support 30 is connected.

Hereinafter, the structure of the support and the connection part according to the present embodiment will be described in more detail with reference to FIG. 2.

The support 30 may have a long elongated bar shape. The support 30 may include a frame 31 formed by bending an iron plate, and a bracket 32 formed integrally with the front end of the frame 31.

The support 30 may include an insert 50 installed in the frame 31 for coupling with the side plate 20. Insert 50 is fixed to the frame 31 by the fixing portion. The insert 50 is coupled to the frame 31 to form a support 30.

The frame 31 may be formed by bending a plate structure made of iron in a square cross-sectional shape. For example, the frame 31 may be elongated along the long axis direction and bent several times at right angles so that both ends 33 face each other in the short axis direction to have an inner space of a square cross section. In addition to the above-described structure, the support may include a frame having a circular cross-section in which both ends are bent in a short axis direction.

Brackets 32 are integrally formed at both ends of the frame 31 in the long axis direction of the support 30. The bracket 32 has a flat plate structure, and is bent at a right angle to the long axis direction of the frame 31, and a hole 34 is formed in the front surface so that the bolt 40 can penetrate. The size of the hole 34 may be formed to an appropriate size according to the diameter of the bolt 40 so that the bolt 40 can penetrate sufficiently.

Accordingly, the bracket 32 bent in the frame 31 forms a long longitudinal end surface of the support 30 to face the side plate 20. Therefore, when the support 30 is installed on the side plate 20, the front side of the bracket 32 of the frame comes into contact with the side plate 20. The bracket 32 in contact with the side plate is integrally formed with the frame 31 so as to minimize deformation of the bracket 32 with respect to the frame 31 and increase the bonding force between the side plate 20 and the support 30 more. do.

When the support 30 is placed in the engagement position with the side plate 20, the through hole 22 formed in the side plate 20 and the hole 34 formed in the bracket 32 of the frame coincide. Therefore, the bolt 40 is inserted through the through hole 22 and the hole 34 to be fastened to the insert 50 inside the support 30.

When the bolt 40 is fastened by fastening the bolt 40 to the insert 50 from the outside of the side plate 20, the bracket 32, which is the front end of the support, is pressed against the side plate 20 and the support 30 is firmly attached to the side plate 20. Is fixed.

3 shows an insert according to this embodiment.

The insert 50 is inserted into the space inside the frame 31 and fixedly installed. The insert 50 is fastened to the bolt 40 through the through hole 22 of the side plate 20 and the hole 34 of the bracket 32 to fix the support 30 to the side plate 20.

The insert 50 of this embodiment is formed by bending at a right angle to the horizontal portion 52 and the horizontal portion 52 placed on the inner surface of the frame 31 and vertically arranged inside the frame 31 and bolts 40 on the front side It may include a vertical portion 54 is formed with a female screw hole 56 to be fastened.

The insert 50 may be formed, for example, by bending a plate-shaped iron plate at a right angle. One side bent at a right angle forms a horizontal portion 52 and the other forms a vertical portion 54. On the front surface of the vertical portion 54 of the insert 50, a female screw hole 56 in which the bolt 40 is fastened at a position coinciding with the hole 34 of the bracket 32 is formed.

The insert 50 is formed to have a size corresponding to the inner space of the frame 31 and is inserted and installed inside the frame 31. The size of the vertical portion 54 of the insert 50 may approximately correspond to the cross-sectional size of the space inside the frame 31. Thus, when the insert 50 is inserted into the frame 50, the horizontal surface 52 is supported by being placed on the inner surface of the frame 31, and the vertical portion 54 may have a side end contacting the inner surface of the frame 31. . Thus, the insert 50 can be tightly coupled to the frame without flowing in the space inside the frame 31.

In this embodiment, the insert 50 is installed in the frame 31 with the tip of the horizontal portion 52 facing the bracket 32, as shown in FIG. The horizontal portion 52 maintains a gap between the vertical portion 54 and the bracket 32 at the tip end of which is in contact with the bracket 32. In addition, the horizontal portion 52 supports the vertical portion 54 in a vertical state in contact with the inner surface of the frame 31 and prevents the vertical portion 54 from being rotated or bent toward the bracket.

The vertical portion 54 is fixed to the frame end by the fixing portion. In addition, the vertical portion 54 is fastened to the bolt 40 through the female screw hole 56 formed on the front side to fix the support 30 to the side plate 20. In the insert 50, the vertical portion 54 is fixed to the frame end and the horizontal portion is supported in contact with the bracket 32, so that when the bolt 4 is fastened, it is moved to the front end of the frame or bent to maintain a fixed state without deformation. Can.

Therefore, the support 30 is securely fixed to the side plate 20 via the insert 50 with a bolt 40. Accordingly, when the external force is applied, the bracket 32 or the insert 50 is not easily deformed, so that the support 30 is bent or damaged.

In this embodiment, the thickness of the insert 50 may be a structure that is relatively thicker than the thickness of the frame 31 including the bracket 32. For example, the bracket may be formed to a thickness of 2 mm as the frame, and the insert may be formed to a thickness of 3 mm thicker than this. Since the thickness of the insert is relatively thicker than the thickness of the frame or bracket, it is possible to increase the fastening force with the bolt as compared to the structure for fastening the bolt directly to the frame. In addition, since the insert can withstand more load than the frame, it is possible to prevent the insert from being deformed first, and to maintain the fixed state of the support by the insert.

The insert 50 can be securely fixed to the frame 31 by a fixing part.

As shown in Figure 2, the fixing portion of the present embodiment is formed inwardly protruding inward to the frame 31 from both sides of the vertical portion 54 of the insert 50, the inner jaw portion 60 and the outside fixing the vertical portion 54 It may include a jaw portion 62.

The inner jaw portion 60 and the outer jaw portion 62 may be a notch structure that is recessed to protrude toward the inner space by pressing the frame.

The insert 50 is hung on the inner jaw portion 60 and the outer jaw portion 62 so that it does not flow along the long axis direction in the inner space 31 of the frame 31. Inside the support 30, the horizontal portion 52 of the insert 50 is completely in close contact with the bracket 32, in accordance with the position of the vertical portion 54 along the long axis direction of the support 30, the inner jaw portion 60 and The outer jaw portion 62 may be formed.

In FIG. 2, the structure in which the inner jaw portion 60 and the outer jaw portion 62 are formed at the end portion 33 of the frame is not limited thereto. If the inner jaw portion and the outer jaw portion protrude toward the inside of the frame to prevent the insert from moving, the forming position may be formed at various positions along the side of the frame. Accordingly, the insert 50 may be securely fixed inside the support 30 in a state of being hung by the bracket 32 formed on the frame, the inner jaw portion 60, and the outer jaw portion 62.

In this embodiment, the inner jaw portion 60 refers to a notch located relatively far from the bracket 32, and the outer jaw portion 62 refers to a notch located relatively close to the bracket 32.

The inner jaw portion 60 may act as a stopper for fixing the vertical portion 54 of the insert 50 and regulating the position of the insert 50 with respect to the frame 31. In the process of inserting the insert 50 into the frame 31, while the vertical portion 54 of the insert is caught in the inner jaw portion 60, the insert 50 is no longer deeply inserted inward and is between the bracket and the inner jaw portion 60 Can be right on. The outer jaw portion 62 is fixed by hanging the vertical portion 54 from the bracket side, thereby preventing the vertical portion 54 of the insert from being bent toward the bracket to deform.

As such, the insert 50 of the present embodiment is fixed by hanging both sides of the vertical portion 54 by the inner jaw portion 60 and the outer jaw portion 62 that are pressed and protrude from the frame 31. Thus, the insert 50 can maintain a fixed state without flowing along the long axis direction of the frame. In addition, the inner jaw portion 60 and the outer jaw portion 62 are fixed to both sides of the vertical portion 54, so that the vertical portion 54 can be minimized to bend or deform to the bracket side or the opposite side. .

In addition, since the vertical portion 54 is firmly fixed to the frame 31, the bolt 40 is tightened more firmly to the insert 50 to increase the fastening force between the support 30 and the side plate 20. In addition, when an external force is applied to the support, the vertical portion is fixed to the inner jaw portion 60 and the outer jaw portion 62 so that it is not deformed in either side and can maintain a fastening state with the bolt. Accordingly, it is possible to prevent the bolt or the insert from being detached or damaged, thereby increasing the rigidity of the tray.

In addition, in the present embodiment, the frame 31 is not cut or structurally deformed and provided with an insert 50 therein to be coupled with the side plate 20, thereby increasing the structural rigidity of the support 30, due to the cut portion. Cable damage can be prevented.

In this embodiment, the insert 50 may further include a protrusion 58 formed at the tip of the vertical portion 54 and extending between the opposing ends 33 of the frame 31.

As shown in FIG. 4, the protrusion 58 protrudes between the opposing ends 33 of the frame 31 in the space inside the frame 31. The protrusion 58 may be formed at a height approximately corresponding to the size between the opposing ends 33 of the frame 31 and the thickness of the ends 33 of the frame 31.

The vertical portion 54 of the insert 50 by the protrusion 58 can be engaged in close engagement with the end 33 of the frame 31. In addition, the vertical portion 54 is able to increase its own rigidity as much as the size increased by the protrusion 58. Between the female screw hole 56 formed on the front surface of the vertical portion 54 and the tip of the vertical portion 54 is widened by the protruding portion 58, it is possible to prevent the stiffness of the insert 50 from being caused by the female screw hole 56. have.

In addition, when forming the inner jaw portion 60 and the outer jaw portion 62 at the ends of the frame 31 with the vertical portion 54 interposed therebetween, it is possible to prevent the vertical portion 54 from being deformed.

Figure 5 shows the combined state of the support and the side plate according to this embodiment.

As shown, the cable tray 10 of this embodiment is coupled to the side plate 20 and the support 30 via the bolt 40 and the insert 50, but can be easily assembled using the bolt 40, It is possible to more firmly couple between the side plate 20 and the support 30.

When the bolt 40 is fastened in a state where the support 30 is in close contact with the side plate 20, the bolt 40 penetrates the through hole 22 of the side plate 20 and the hole 34 of the bracket 32. By being inserted into the frame 31 of the support 30. Since the insert 50 is installed inside the frame 31, the bolt 40 is screwed into the female screw hole 56 formed in the insert 50.

Thus, when the bolt 40 is tightened, the bolt 40 and the insert 50 are tightened, and the frame 31 on which the insert 50 is installed is firmly fixed while being pressed against the side plate 20.

The insert 50 is supported by the horizontal portion 52 in contact with the bracket 32 and the vertical portion 54 is firmly coupled by the inner jaw portion 60 and the outer jaw portion 62 formed in the frame 31. Thus, when the bolt 40 is fastened, the support plate and the side plate are assembled while the bracket 32 of the frame is in close contact with the side plate while the bolt 40 is tightened to the insert 50 fixed to the frame 31.

As mentioned, the insert 50 has the upper end of the vertical portion 54 fastened to the bolt 40 securely fixed to the frame, and the lower end is attached to the frame 32 by the horizontal portion 52 formed integrally. Since it is firmly supported, it is possible to prevent the shape from being deformed, such as bending or bending when an external force is applied to the side plate 20 or the support 30. Thus, it is possible to further strengthen the bonding force between the side plate 20 and the support 30.

Hereinafter, the manufacturing process of the support according to this embodiment will be described.

For the production of the support 30, first, both ends are cut in the long axis direction of the prepared iron plate to form the bracket 32, and the hole 34 is processed in the bracket 32. The hole 34 may be formed by cutting the iron plate or processing the front surface of the bracket 32 separately after cutting the iron plate.

When the bracket 32 and the hole 34 are processed, both ends 33 are bent to face each other in the minor axis direction of the steel plate to form a rectangular frame 31 having an internal space.

The prepared insert 50 is inserted into the inner space of the frame 31 when the frame 31 is formed or after the frame 31 is formed. The inner jaw portion 60 may be formed in the frame before inserting the insert. For example, the inner jaw portion 60 may be formed by pressing the frame 31 and recessed in a notch shape. The inner jaw portion 60 may be formed according to the insertion position of the insert 50. By the inner jaw portion 60, the insert 50 does not enter the inside of the frame further and is placed in the correct installation position.

The insert 50 is a female screw hole 56 formed on the front surface, and is prepared separately from the support 30. In this embodiment, the insert 50 to be prepared is a horizontal portion 52 placed on the inner surface of the frame 31, formed by bending at a right angle to the horizontal portion, vertically arranged inside the frame, and a female screw hole coupled with a bolt on the front side ( 56) may include a vertical portion 54 is formed. For example, the insert may be manufactured by machining a female screw hole in an iron plate cut to a predetermined size, and bending the iron plate at right angles to form horizontal and vertical portions.

When the prepared insert 50 is inserted into both ends of the long axis direction of the frame 31, the bracket 32 is bent, and the insert 50 is fixed by processing the outer jaw portion 62 in the frame 30. For example, the outer jaw portion 62 may be formed by pressing a frame to be recessed in the form of a notch. The bending of the bracket 32 and the formation of the outer jaw portion 62 may be made simultaneously or sequentially.

Thus, by manufacturing the support 30 according to this embodiment, it is possible to easily manufacture the support 30 with the insert 50 fixedly inserted into the frame 31. Accordingly, it is possible to increase the productivity of the support by reducing the process for manufacturing the support.

As described above, although exemplary embodiments of the present invention have been illustrated and described, various modifications and other embodiments may be made by those skilled in the art. These modifications and other embodiments are all to be considered and included in the appended claims will not depart from the true spirit and scope of the invention.

10: cable tray 20: side plate
22: through hole 30: support
31: frame 32: bracket
33: end 34: hole
40: bolt 50: insert
52: horizontal portion 54: vertical portion
56: female thread hole 58: protrusion
60: inner jaw portion 62: outer jaw portion

Claims (10)

It includes a pair of spaced apart side plates, a support for connecting between the side plates, and a connection for fixing the side plate and the support,
The support is extended along the long axis direction and bent so that both ends of the short axis direction are opposed to each other to form a frame formed to have an interior space, and is integrally formed at the front end of the frame and bent at a right angle to the long axis direction of the support so as to face the side plate. The front includes a hole-formed bracket,
The connecting portion is a bolt that fits into the hole of the bracket through the through hole formed in the side plate at the support connection position, an insert inserted into the frame of the support and fastened to the bolt, and a fixing part fixing the insert to the frame Including,
The insert has a horizontal portion placed on the inner surface of the frame, the tip of which is disposed facing the bracket, and perpendicular to the horizontal portion to be vertically arranged inside the frame, and a female threaded hole fastened to the bolt is formed on the front surface. Cable tray including a vertical portion. According to claim 1,
The fixing portion is formed to protrude inward to the frame from both sides of the vertical portion of the insert cable tray comprising an inner jaw portion and an outer jaw portion for fixing the vertical portion. The method according to claim 1 or 2,
The insert is further formed on the tip of the vertical portion cable tray further comprises a projection extending between the opposite ends of the frame. The method of claim 3,
The thickness of the insert is a relatively thick cable tray than the thickness of the bracket. A frame that extends along the long axis direction and is bent so that both ends of the short axis direction face each other, and is formed integrally with the front end of the frame and bent at a right angle with respect to the long axis direction so as to face the side plate, and has a hole formed in the front surface. , Inserts are installed in the inner spaces of both ends of the frame in the long axis direction, and female thread holes are formed on the front surface, and inserts are fastened to the bolts through the holes of the bracket through the through-holes on the outside of the side plate, and fixing parts for fixing the inserts Including,
The insert has a horizontal portion placed on the inner surface of the frame, the tip of which is disposed facing the bracket, and perpendicular to the horizontal portion to be vertically arranged inside the frame, and a female threaded hole fastened to the bolt is formed on the front surface. Support of the cable tray including a vertical portion. The method of claim 5,
The fixing portion is formed on the frame from both sides of the vertical portion of the insert protruding inward to support the cable tray including an inner jaw portion and an outer jaw portion fixing the vertical portion. The method of claim 5 or 6,
The insert is a support of the cable tray further comprises a protrusion formed at the tip of the vertical portion and extending between opposite ends of the frame. The method of claim 7,
The thickness of the insert is a support for a cable tray that is relatively thicker than the thickness of the bracket. Cutting both ends of the prepared iron plate to form a bracket, and processing a hole in the bracket,
Bending a steel plate to form a frame having an interior space,
Forming an inner jaw for fixing the insert to the frame,
Preparing an insert and inserting the insert into the space inside the frame,
Bending the bracket and fixing the insert by forming an outer jaw on the frame
Cable tray support manufacturing method comprising a. The method of claim 9,
In the step of preparing the insert, the insert is a horizontal portion placed on the inner surface of the frame, and a vertical portion formed by bending at a right angle to the horizontal portion and standing vertically inside the frame and having a female screw hole formed on the front surface and fastened to the bolt Method of manufacturing a cable tray support comprising.

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