JP2010531229A - Cable tray and manufacturing apparatus and method thereof - Google Patents

Abstract

An object of the present invention is to improve productivity and reduce manufacturing costs, remove environmental pollution, and improve the working environment.
Side frames constituting a cable tray and hangers are manufactured in a continuous process, and the side frames and hangers are fitted and assembled. The side frame is continuously manufactured via a first uncoiler device, a first level feeder, a first press machine, a first molding machine, and a second press machine. The hanger is continuously manufactured through the second uncoiler device, the second level feeder, the second molding machine, the third press machine, and the fourth press machine. Side frames and hangers are assembled together on an assembly table. Therefore, it is possible to omit welding, improve productivity, and reduce manufacturing costs. It also eliminates environmental pollution caused by welding, contributes to industrial safety, and reduces social costs.
[Selection] Figure 9

Description

  The present invention relates to a cable tray and an apparatus and method for manufacturing the same, and more specifically, a side frame and a hanger constituting the cable tray are manufactured in a continuous process, and the side frame and the hanger are fitted to each other. By producing trays and improving processes that eliminate conventional welding and plating processes, productivity is improved and manufacturing costs are reduced, and environmental pollution caused by welding and plating processes is effectively removed. The present invention relates to a cable tray capable of improving the working environment, and as a result ensuring uniform quality and enhancing corrosion resistance, and a manufacturing apparatus and method thereof.

  In general, in factories, ships, offshore structures, and the like, large or small cables are installed along the ceiling or wall to provide a power supply or a smooth supply of fluid or the like. Recently, cables have been installed to meet the demands for quality construction of ultra-precision products such as semiconductors, LCDs, and solar thermal power generation. The cable installed in this manner is supported and fixed in a neatly tidy state using a cable tray for aesthetic reasons or to avoid inconvenience to passers-by.

  FIG. 1 is a perspective view showing a conventional cable tray. As shown in FIG. 1, a conventional cable tray is located between a pair of side frames 1 having a certain length and corresponding to both sides, and a predetermined distance between the side frames. And a plurality of hangers 2 fixed at both ends to the side frame 1 by welding.

  At least one through hole 1 a is provided at both ends of the side frame 1. The length of the cable tray is adjusted by connecting a plurality of side frames 1 through the through holes 1a.

  Next, a manufacturing method of the cable tray configured as described above will be described. The side frame 1 cuts a steel plate made of the same material as the side frame into a certain size, forms a through hole in the cut steel plate using a first press, and bends both side surfaces in the longitudinal direction using a second press. To be completed.

  The hanger 2 is completed by cutting a steel plate made of the same material as the hanger into a certain size and bending both sides of the cut steel plate using a third press.

  When the side frame 1 and the hanger 2 are completed as described above, the plurality of hangers 2 are arranged between the pair of side frames 1 and fixed to the side frame 1 by welding.

  In addition, the welded cable tray is transported to a plating factory and subjected to a plating process, and thereafter, as a processing, sharp chips (or burrs) generated during plating are removed and delivered in a package.

  However, when the cable tray is manufactured as described above, it is divided into independent processing steps, and of course, an operator must be placed in each processing machine and the steel plates must be put in one by one. Must be carried in the cart for the next process, but such loading and carrying processes greatly reduce workability and productivity. In addition, there has been a problem that environmental contamination and health problems of workers are generated by the welding process.

  In addition, it is difficult to maintain product uniformity due to the plating process, and the price fluctuation of zinc, which is the raw material for plating, is difficult to reflect in the product costs. There were problems such as deepening of the air, generation of air pollution and secondary social damage (cost).

  In addition, as a result of welding the hanger to the side frame of the cable tray, it occupies a space with a certain volume, and the burden of physical distribution costs during transportation is large, and the profitability deteriorates. In addition, the removal of welding fume and galvanized sludge causes additional costs and requires industrial safety management.

  2 is a perspective view showing a conventional cable tray connection structure, FIG. 3 is a side sectional view showing a conventional cable tray connection structure, and FIG. 4 is a conventional cable tray connection structure. FIG.

  As shown in FIGS. 2 to 4, the cable tray connection structure has a pair of side frames 1 arranged in parallel to each other at a predetermined interval and having a plurality of connection holes 1 a at both ends, and these A cable tray composed of a plurality of hangers 2 that connect and support the side frames 1 and a fastening hole 3a corresponding to the connection hole 1a of the side frame 1 in order to continuously arrange the cable tray in the longitudinal direction. A connecting member 3 provided to connect adjacent side frames 1 to each other, a connecting hole 1a of the cable tray, a fixing member 4 fixed to a fastening hole 3a of the connecting member 3, and both side surfaces of the connecting member 3 And a ground bonding jumper 5 fixed to a jumper coupling hole 1b provided on the side frame 1.

  As shown in FIG. 3, the connecting member 3 is coupled to the outside of the side frame 1, but bent portions b are provided on the upper and lower portions of the side frame 1 and the connecting member 3, respectively. The bent portion b2 is coupled so as to wrap around the bent portion b1 of the side frame 1.

  In the conventional cable tray connecting structure configured as described above, the adjacent cable tray and the connecting member 3 are fixed by the fixing member 4. First, the connecting member 3 and the side frame 1 are coupled to each other so that the bent portion b2 of the connecting member 3 wraps the bent portion b1 provided at the upper and lower portions of the side frame 1, and then the side frame 1 The fixing member 4 is fitted into the connecting hole 1a and the fastening hole 3a of the connecting member 3 and fixed.

  Further, the side frame 1 of the cable tray is electrically connected by the ground bonding jumper 5 fixed to the jumper coupling hole 1b of the side frame 1, thereby preventing the accident due to electric leakage and protecting the cable. ing.

  On the other hand, as shown in FIG. 4, when vibration or excessive load is applied to the cable trays connected by the connecting member 3, the cable tray is coupled between the connecting hole 1 a of the side frame 1 and the fastening hole 3 a of the connecting member 3. There is a problem in that the coupling force of the fixing member 4 becomes weak, and the cable trays located on the left and right with respect to the connecting member 3 are loosened.

  That is, when the coupling force of the fixing member 4 becomes weak due to the coupling tolerance between the fixing member 4 and the coupling hole 1a of the side frame 1 and between the fixing member 4 and the fastening hole 3a of the coupling member 3, The cable tray is slack.

  Further, the ground bonding jumper 5 used for grounding the cable tray according to the prior art is configured so that both ends are fixed to the jumper fastening holes 1b of the side frame 1 across both side surfaces of the connecting member 3. . The ground bonding jumper 5 has a problem in that the length of a flexible electric wire having a plurality of copper wires therein is long and a separate fixing member 4 is required at both ends, resulting in an increase in manufacturing cost.

nothing special

  The present invention is for solving the above-mentioned conventional problems, and its purpose is to manufacture side frames and hangers constituting the cable tray in a continuous process, and to fit these side frames and hangers. By manufacturing the cable tray and by omitting the conventional welding process and plating process, it is possible to improve productivity and reduce manufacturing costs, and effectively prevent environmental pollution caused by the welding and plating process. It is an object of the present invention to provide a cable tray that can be removed to improve the working environment, and as a result, ensure uniform quality and enhance corrosion resistance, and a manufacturing apparatus and method thereof.

  Another object of the present invention is to form a bent piece formed by bending both ends of a hanger, having notches on both sides of the both ends and fastening projections on both sides of the end. An object of the present invention is to provide a cable tray that can be configured to be inserted into a slot provided inside a side frame so as to be penetrated with a single touch.

  Another object of the present invention is to form a notch portion between the fastening protrusions of the bent pieces to further improve the assembly of the side frame and the hanger and to elastically couple the bent pieces to the slot portions. It is to provide a cable tray.

  Another object of the present invention is to provide a fixing portion at the bottom of the side frame in order to prevent left / right twisting, increase the strength even when the side frame and the hanger are thin, and reduce the cost. It is an object of the present invention to provide a cable tray that allows a hanger to be locked.

  Another object of the present invention is to provide a cable tray connection structure that improves the coupling force between cable trays that are continuously connected by a connection member, and prevents loosening due to vibration or excessive load.

  Another object of the present invention is to provide a cable tray connection structure that reduces a manufacturing cost by installing a grounding member used for grounding a cable tray on the cable tray with a simple structure.

  According to one aspect of the present invention, the present invention is a first uncoiler device into which a side frame material steel plate having a predetermined width wound in a roll shape is charged, and is installed in the vicinity of the first uncoiler device, A first level feeder for horizontally flattening and laterally transferring the supplied side frame material steel plate, and a slot portion at a predetermined interval in the side frame material steel plate supplied via the first level feeder. A first press for forming the embossing portion, a first forming machine having a plurality of forming rollers for bending the side surface in the width direction of the side frame material steel plate formed with the slot portion and the embossing portion in multiple stages, Side frame production device unit comprising a second press for cutting a side frame material steel plate whose side surface is bent by one forming machine at a predetermined interval. A second uncoiler device into which a hanger material steel plate having a predetermined width wound in a roll shape is charged, and a hanger material steel plate that is installed in the vicinity of the second uncoiler device and is horizontally flattened and continuously. And a second level feeder that is intermittently transferred, a second forming machine having a number of forming rollers that bend the side surfaces in the width direction of the hanger material steel plate in multiple stages, and a hanger material steel plate on which both side surfaces are formed. A hanger comprising a third press that cuts both side surfaces to form a notch portion, and a fourth press that cuts the center of the notch portion of the hanger material steel plate on which the notch portion is formed and folds to form a bent piece. A fixing device is provided so as to separate the pair of side frames manufactured in the side frame manufacturing stage at a predetermined interval; Composed wearing has been of the side frames slot portion and embossing portion to the bent piece of the hanger from the inserted assembling table giving assembled hanger to side frames, respectively.

  The first molding machine and the second molding machine are further provided with a coating apparatus.

  According to another aspect of the present invention, the present invention provides a cable tray manufactured by the manufacturing apparatus described above.

  The cable tray includes a pair of side frames having a predetermined length so as to support and fix a cable routed along a wall surface or a ceiling, and arranged in parallel at a predetermined interval. A plurality of hangers for connecting and supporting the side frames, and a coupling means for coupling the side frames and the hangers, wherein the coupling means is formed by bending both ends of the hanger, A bent piece having notches on both side surfaces of both end portions and fastening projections on both side surfaces of the end portion; and an inner surface of the side frame so that the bent pieces are coupled to each other; A slot portion through which the fastening protrusion of the bent piece is locked to the lower end portion of both side surfaces, and an embossing portion provided on both sides of the slot portion and pressed against the notch portion. Consisting of.

  Further, a notch portion is formed between the fastening protrusions of the bent piece so that the fastening protrusions of the bent piece are elastically coupled to both side surfaces of the lower end portion of the slot portion, and the notch of the bent piece is formed. A fastening hole is formed on the part and a through hole is formed in the slot part, and the fastening hole and the through hole are fixed by a coupling member. The side frame includes a vertical plate, a horizontal plate integrally provided at a lower end portion of the vertical plate, and a support plate protruding above the end portion of the horizontal plate, and for supporting the lower end portion of the hanger. By forming a fixing portion on the support plate, left / right twisting is prevented.

  In addition, the side frame includes a vertical plate and a lower support body that is integrally bent from the lower end portion of the vertical plate and is inclined upward, so that the lower end portion of the hanger is supported. By forming a fixing portion on the lower support plate, left and right twists are prevented, and a plurality of through holes are formed at both ends of the side frame of the cable tray; For this reason, a fastening hole corresponding to the through hole of the side frame is provided, and a protruding portion having a certain height is provided on one side of the fastening hole to connect adjacent side frames to each other. A connecting member; and a fixing member that fixes the through hole of the side frame and the fastening hole of the connecting member to each other.

  The connecting member is closely attached to the inner side of the side frame, and the cable tray is positioned on the outer side of the side frame, and has a coupling hole so as to be fixed together with the side frame and the connecting member by the fixing member. The through hole of the side frame further includes a round slit shape, and the protruding portion of the connecting member is a rounded rectangle having a shorter length than the through hole, but the pair of protruding portions is the side surface. It is inserted into the through hole of the frame.

  According to another aspect of the present invention, the present invention includes a side frame material preparation step of feeding a side frame material steel plate having a predetermined width wound in a roll shape into the first uncoiler device, and the proximity to the first uncoiler device. Side frame material transfer step for transferring the side frame material steel plate continuously and intermittently via a first level feeder that horizontally flattens the supplied side frame material steel plate, and the side frame material transfer The side frame material steel plate supplied through the process is put into the first press machine, the side frame material pressing step for forming the slot portion and the embossing portion at predetermined intervals, and the slot portion and the embossing in the side frame material pressing step. The side frame material steel plate with the part formed is transferred to the first forming machine, and both sides in the width direction by a number of forming rollers A side frame material forming step for forming the side frame material sheet so as to be bent in multiple stages, and a side frame material cutting step for cutting the side frame material steel plate formed in the side frame material forming step to a certain length by a second press machine; A side frame manufacturing stage comprising: a hanger material steel plate having a predetermined width wound in a roll shape, and a hanger material preparation step for supplying the hanger material steel plate to the second uncoiler device; The hanger material steel plate is transferred through the second level feeder for horizontally flattening the hanger material steel plate, and the hanger material steel plate supplied via the hanger material steel material transfer step. 2 Hangers that are transferred to a forming machine and bend the sides of the hanger steel plate in multiple stages by a number of forming rollers A material forming step, a hanger material notch forming step in which the hanger material steel plate that has undergone the hanger material forming step is put into a third press, and both sides are cut at a predetermined interval to form a notch portion, and the hanger material notch A hanger manufacturing step comprising a hanger material bent piece forming step in which the center of the notch formed in the part forming process is cut with a fourth press and bent to form a bent piece; manufactured in the side frame manufacturing step; A cable tray assembling step of assembling the hangers in the side frames by inserting bent pieces of the hangers into the slot portions and embossing portions of the side frames with the pair of side frames spaced apart at a predetermined interval. Provide a method for making cable trays.

  The side frame material forming step in the side frame manufacturing step and the hanger material forming step in the hanger manufacturing step further include a coating step for coating the surface of the side frame material steel plate and the hanger material steel plate.

  According to another aspect of the present invention, the present invention provides a cable tray manufactured by the manufacturing method described above.

  As described above, in the cable tray manufacturing apparatus and method according to the present invention, the side frame and the hanger constituting the cable tray are respectively connected to the first uncoiler device, the first level feeder, the first press, the first molding machine, and the first molding machine. The side frame is manufactured through 2 presses in sequence, the hanger is manufactured through the 2nd uncoiler device, 2nd level feeder, 2nd molding machine, 3rd press and 4th press in sequence, and the side frame and the hanger are assembled on the assembly table. By making the cable trays interconnected, they are manufactured in a continuous process and assembled by mating. Therefore, it is possible to improve productivity by omitting the welding process and reduce manufacturing costs by improving the process, effectively removing environmental pollution generated from the welding process, contributing to industrial safety and reducing social costs. You can save.

  Also, by coating the side frames and hangers via the first molding machine and the second molding machine, the corrosion resistance is enhanced, the surface is made uniform, the whitening phenomenon is prevented, and the conventional plating process is omitted. be able to.

  Also, the cable tray is formed by bending both ends of the hanger so that the side frame of the cable tray and the hanger can be separated / assembled, and has notches on both sides of both ends and both sides of the end. Folding pieces with fastening projections on the surface can be fitted into the slot provided inside the side frame with one touch so that the upper and lower sides are penetrated, thereby reducing work man-hours and reducing manufacturing costs. Assemblability can also be improved.

  Further, by forming a notch portion between the fastening protrusions of the bent piece and elastically coupling the bent piece to the slot portion, it is possible to further improve the assemblability of the side frame and the hanger.

  In addition, by forming a fixing part at the lower part of the side frame so that the hanger is locked, left and right twists are prevented, increasing the strength even when the side frame and the hanger are thin, and cost Can be saved.

  Further, by forming a protruding portion in the connecting member that connects the side frames of adjacent cable trays and inserting the protruding portion into the through hole of the side frame, the coupling force of the cable tray continuously connected by the connecting member is increased. It can be improved to prevent loosening due to vibration or excessive load.

  Further, by fixing the grounding member formed with the coupling hole in the outer direction of the side frame together with the side frame and the connecting member by the fixing member, the grounding member used for grounding the cable tray can be easily attached to the cable tray. Installation cost can be reduced by installing the structure.

It is a perspective view of the cable tray which fixed the hanger to the side frame by welding which concerns on the prior art. It is a perspective view which shows the connection structure of the cable tray which concerns on the prior art. It is a sectional side view which shows the connection structure of the cable tray which concerns on a prior art. It is a front sectional view which shows the connection structure of the cable tray which concerns on a prior art. It is a figure which shows the side frame production apparatus of the cable tray which concerns on this invention. It is a figure which shows the hanger manufacturing apparatus of the cable tray which concerns on this invention. It is a figure which shows the assembly stand of the cable tray which concerns on this invention. It is a block diagram for demonstrating the manufacturing method of the cable tray which concerns on this invention. It is process drawing for demonstrating the manufacturing method of the cable tray which concerns on this invention. It is a perspective view which shows the cable tray which concerns on 1st Example of this invention. It is sectional drawing which shows the cable tray which concerns on 1st Example of this invention. It is a perspective view which shows the cable tray which concerns on 2nd Example of this invention. It is a sectional side view which shows the cable tray which concerns on 2nd Example of this invention. It is a front sectional view showing a cable tray according to a second embodiment of the present invention. It is a principal part perspective view which shows the cable tray which concerns on 3rd Example of this invention. It is a sectional side view which shows the cable tray which concerns on 3rd Example of this invention. It is a principal part perspective view which shows the cable tray which concerns on the modification of 3rd Example of this invention. It is a sectional side view which shows the cable tray which concerns on the modification of 3rd Example of this invention. It is a disassembled perspective view which shows the connection structure of the cable tray which concerns on 4th Example of this invention. It is a sectional side view which shows the connection structure of the cable tray which concerns on 4th Example of this invention. It is a front sectional view which shows the connection structure of the cable tray which concerns on 4th Example of this invention.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

  5 is a view showing a cable tray side frame manufacturing apparatus according to the present invention, FIG. 6 is a view showing a cable tray hanger manufacturing apparatus according to the present invention, and FIG. 7 is a view showing a cable tray assembly table according to the present invention. It is.

  As shown in FIGS. 5 to 7, the cable tray manufacturing apparatus is mainly composed of a side frame manufacturing apparatus 100, a hanger manufacturing apparatus 200, and an assembly table 300.

  The side frame manufacturing apparatus 100 is installed in proximity to the first uncoiler apparatus 110 into which a side frame material steel plate P1 having a predetermined width wound in a roll shape is placed, and is supplied to the first uncoiler apparatus 110. The first level feeder 120 for horizontally flattening and transferring the side frame material steel plate P1 horizontally and the side frame material steel plate P1 supplied via the first level feeder 120 with slot portions at predetermined intervals. A first press 130 for forming 13c and the embossing part 13d, and a first forming roller 141 for bending the side surface in the width direction of the side frame material steel plate P1 formed with the slot part 13c and the embossing part 13d in multiple stages. 1 molding machine 140, and a side face whose side face is bent by the first molding machine 140. Configured to chromatography beam steel sheet P1 from the second press 150. to cut at a predetermined interval.

  The hanger manufacturing apparatus 200 includes a second uncoiler device 210 into which a hanger material steel plate P2 having a predetermined width wound in a roll shape is placed, and a hanger material that is installed and supplied in the vicinity of the second uncoiler device 210. A second level feeder 220 for flattening the steel plate P2 horizontally and continuously and intermittently, and a second forming unit having a number of forming rollers 231 for bending the side surfaces in the width direction of the hanger material steel plate P2 in multiple stages. Machine 230, a third press 240 that cuts both side surfaces of the hanger material steel plate P2 formed on both side surfaces to form a notch portion 13b, and a notch portion 13b of the hanger material steel plate P2 formed with the notch portion 13b. And a fourth press 250 that is bent to form the bent piece 13a.

  The assembly table 300 is provided with a fixing unit 310 so as to separate the pair of side frames 11 manufactured in the side frame manufacturing step at a predetermined interval, and the connecting unit of the side frames 11 fixed to the fixing unit 310. The bent pieces 13 a of the hanger 12 are respectively inserted into the hanger 12, and the hanger 12 is assembled to the side frame 11.

  Further, since the first forming machine 140 and the second forming machine 230 are further provided with a coating apparatus 400, the steel plate is coated and surface-treated without performing a separate plating process as in the prior art.

  FIG. 8 is a block diagram for explaining a cable tray manufacturing method according to the present invention, and FIG. 9 is a process diagram for explaining a cable tray manufacturing method according to the present invention.

  As shown in FIGS. 8 and 9, the method of manufacturing the cable tray of the present invention is roughly divided into a side frame manufacturing step S100, a hanger manufacturing step S200, and a cable tray assembly step S300.

  First, the side frame production step S100 includes a side frame material preparation step S110, a side frame material transfer step S120, a side frame material press step S130, a side frame material molding step S140, and a side frame material cutting step S150.

[Side frame material preparation step: S110]
In order to process the side frame 11, the side frame material preparation step S110 is a step of clamping the side frame material steel plate P1 having a predetermined width wound in a roll shape to the first uncoiler device 110 so as to be rotatable.

[Side Frame Material Transfer Process: S120]
In the side frame material transfer step S120, the side frame material steel plate P1 is installed via the first level feeder 120 which is installed in the vicinity of the first uncoiler device 110 and horizontally flattens the supplied side frame material steel plate P1. This is a step of transferring the material continuously and intermittently at a constant distance with a time difference.

[Side frame material pressing process: S130]
In the side frame material pressing step S130, the side frame material steel plate P1 supplied through the side frame material transferring step (S120) is fed into the first press 130, and the slot portion 13c and the embossing portion 13d are formed at predetermined intervals. It is a process to make.

[Side frame material molding process: S140]
In the side frame material forming step S140, the side frame material steel plate P1 in which the slot portion 13c and the embossing portion 13d are formed in the side frame material pressing step S130 is transferred to the first forming machine 140, and the width is increased by a number of forming rollers 141. It is a step of forming so that both side surfaces of the direction are bent, and conventionally, it is a step of continuously forming operations performed by a bending machine or the like with a forming machine.

  Moreover, in this process, the conventional plating process can be omitted by adding the coating process S400 to the side frame material steel plate P1 to coat the surface. The coating can be performed by various methods such as spraying the coating liquid onto the side frame material steel plate P1 or precipitating the side frame material steel plate P1 into the coating solution.

[Side frame material cutting step: S150]
The side frame material cutting step S150 is a step of cutting the side frame material steel plate P1 formed in the side frame material forming step S140 to a certain length by the second press 150.

  Next, the hanger production stage S200 includes a hanger material preparation step S210, a hanger material transfer step S220, a hanger material molding step S230, a hanger material notch molding step S240, and a hanger material bent piece molding step S250.

[Hanger material preparation process: S210]
The hanger material preparation step S <b> 210 is a step in which the hanger material steel plate P <b> 2 having a predetermined width wound in a roll shape is charged into the second uncoiler device 210.

[Hanger material transfer process: S220]
The hanger material transfer step S220 is installed in the vicinity of the second uncoiler 210 and the hanger material steel plate P2 is time-shifted through the second level feeder 220 that horizontally flattens the supplied hanger material steel plate P2. It is a process of transferring continuously and intermittently at a constant distance.

[Hanger material molding process: S230]
In the hanger material forming step S230, the hanger material steel plate P2 supplied through the hanger material transfer step S220 is transferred to the second forming machine 230, and any one side surface or both sides of the hanger material steel plate P2 by a large number of forming rollers 231. This is a step of bending the surface.

  Moreover, in this process, the conventional plating process can be omitted by adding the coating process S400 to the hanger material steel plate P2 to coat the surface.

[Hanger material notch forming step: S240]
In the hanger material notch forming step S240, the hanger material steel plate P2 is inserted into the third press 240 through the hanger material forming step S230 and both sides are cut at a predetermined interval to form the notch portion 13b. It is.

[Hanger material bent piece molding process: S250]
The hanger material bent piece forming step S250 is a step of cutting the center with the fourth press 250 around the notch portion 13b formed in the hanger material notch portion forming step S240 and bending it to form the bent piece 13a. .

  Thereafter, in the cable tray assembling step S300, the pair of side frames 11 manufactured in the side frame manufacturing step S100 are separated from each other by a predetermined interval, and the hanger is folded into the slot portion 13c and the embossing portion 13d of the side frame 11. The cable tray is completed by inserting the bent piece 13a and assembling the hanger 12 on the side frame 11.

  Next, as described above, an example of a cable tray manufactured by a cable tray manufacturing apparatus and method will be considered.

  FIG. 10 is a perspective view showing a cable tray according to the first embodiment of the present invention, and FIG. 11 is a sectional view showing the cable tray according to the first embodiment of the present invention.

  As shown in FIGS. 10 and 11, the cable tray has a certain length so as to support and fix a cable routed along the wall surface or ceiling, and is parallel to each other at a predetermined interval. A pair of side frames 11, a plurality of hangers 12 that connect and support the side frames 11, and a coupling means 13 that couples the side frames 11 and the hangers 12.

  The coupling means 13 forms bent pieces 131 at both end portions of the hanger 12. A notch portion 132 is formed on both side surfaces of the bent piece 131, and a slot portion 133 into which the bent piece 131 is inserted is formed on the inner side surface of the side frame 11. The embossing part 134 is formed on both sides of the slot part 133 to bring the embossing part 134 and the notch part 132 into close contact with each other, thereby reinforcing the twist and strength of the side frame 11 and the hanger.

  Further, by making the protruding height of the embossing part 134 higher than the protruding height of the slot part 133, the hanger 12 is further brought into close contact with the side frame 1 to reinforce twisting and strength.

  That is, the slot portion 133 of the side frame 11 is pierced and embossed by a press die, and the embossing portions 134 on both side surfaces of the slot portion 133 are integrally formed by embossing, but the bent piece 131 is formed by the slot portion. The width h of the slot portion 133 corresponds to the thickness of the bent piece 131 so that the embossing portion 134 is further closely attached to the notch portion 132 of the hanger 12. Therefore, this structure prevents deformation and improves the coupling force when a load is applied to the hanger 120 and the side frame 110.

  Further, the bent piece 131 and the slot portion 133 are provided with through holes 131a and 133a, respectively, and a thread is formed on at least one of the through holes 131a and 133a so as to be formed on the through holes 131a and 133a. It is preferable to amplify the fixing force of the side frame 11 and the hanger 12 by the coupling member 14.

  The coupling member 14 may be formed in various forms such as a bolt, a rivet, a synthetic resin, and a nylon fastener. The cable tray is formed by molding the side frame 11 and the hanger 12 with a press die, and after the molding, each is plated or functionally coated to improve quality.

  At this time, since the side frame 11 and the hanger 12 are separated or plated or functionally coated, there is no place where plating or functional coating is not performed as in the case of bonding. Will improve.

  The side frame 11 and the hanger 12 can be loaded, stored, and transported in a state where plating or functional coating is completed, and the side frame 11 and the hanger 12 can be directly fitted on site. 11 slot portions 133. At this time, the width h of the slot part 133 is fitted according to the thickness of the bent piece 131. In this structure, the notch part 132 of the hanger 12 can be brought into close contact with the embossing part 134 to prevent the hanger 12 and the side frame 11 from being deformed and to improve their binding force.

  On the other hand, even if the hanger 12 is coupled to the side frame 11 as described above, since there is no portion protruding inside the side frame 11, the cable covering is not damaged and the cable can be protected.

  Referring to FIGS. 12 and 14, the cable tray configured as described above is applied as a ladder type. When the cover 150 is coupled to the upper and lower sides of the cable tray, it can be used as a duct type.

  In addition, by forming the coupling protrusion 151 on the inner side of the left and right side plates of the cover 150 in an embossing form or the like, the coupling force can be improved by being engaged with the slot portion 133 of the side frame 110. it can.

  Further, by forming through holes 116 in the upper and lower contact surfaces of the cover 150 and the side frame 110, the cover 150 and the side frame 110 can be fixed with a rivet 160 or the like.

  12 is a perspective view showing a cable tray according to a second embodiment of the present invention, FIG. 13 is a side sectional view showing a cable tray according to the second embodiment of the present invention, and FIG. 14 is a second embodiment of the present invention. It is a front sectional view showing such a cable tray, and the same reference numerals are used for the same configuration according to the first embodiment, and detailed description thereof is omitted.

  As shown in FIGS. 12 to 14, the coupling means 13 for mutually coupling the side frame 11 of the cable tray and the hanger 12 includes a bent piece 131, a slot portion 133, and an embossing portion 134.

  The bent piece 131 is bent at both end portions of the hanger 12, has notch portions 132 on both side surfaces, and fastening protrusions 135 on both side surfaces of the end portion.

  The slot part 133 is formed on the inner surface of the side frame 11 so that the bent piece 131 is coupled. The upper and lower sides are penetrated so that the fastening protrusions 135 of the bent piece 131 are formed on both side surfaces. Be locked to the lower end.

  By engaging the fastening protrusion 135 of the bent piece 131 with the lower end portions on both side surfaces of the slot portion 133, a separate through-hole drilling operation or a connecting member is unnecessary, thereby reducing the number of operation steps. In addition, the manufacturing cost can be reduced and the assemblability can be improved.

  Further, according to the present invention, the notches 136 are formed between the fastening protrusions 135 of the bent piece 131 so that the fastening protrusions 135 of the bent piece 131 can be easily coupled to the lower ends of both side surfaces of the slot part 133. By forming the fastening protrusion 135 of the bent piece 131 to be elastically coupled to both side surfaces of the lower end portion of the slot portion 133, the assemblability can be further improved.

  On the other hand, the notch 136 of the bent piece 131 is preferably formed so as to be incised through the through hole 131a of the bent piece 131, as shown in FIG.

  In this case, the fixing force can be further improved by fixing the through hole 131a of the bent piece 131 to the through hole 133a of the slot part 133 by the coupling member 14.

  FIG. 15 is a perspective view showing an essential part of a cable tray according to the third embodiment of the present invention, FIG. 16 is a side sectional view of the cable tray according to the third embodiment of the present invention, and FIG. 17 is a third embodiment of the present invention. The principal part perspective view of the cable tray which concerns on the modification of an example, FIG. 18 is a sectional side view of the cable tray which concerns on the modification of 3rd Example of this invention.

  As shown in FIGS. 15 to 18, the side frame 11 includes a vertical plate 111, a horizontal plate 112 formed integrally with a lower end portion of the vertical plate 111, and a support protruding above the end portion of the horizontal plate 112. A fixing portion 114 is formed on the support plate 113 so as to support the lower end portion of the hanger 12 including the plate 113 to prevent left / right twist. Even when the iron plate thickness of the side frame 11 and the hanger 12 is thin, the strength can be increased and the cost can be reduced.

  A horizontal plate 112 is also installed at the upper end of the vertical plate 111 of the side frame 11.

  Referring to FIGS. 17 and 18, the side frame 11 includes a vertical plate 111 and a lower support plate 115 that is integrally bent from the lower end portion of the vertical plate 111 and tilted upward. The fixing unit 114 is formed on the lower support plate 115 to support the lower end of the hanger 12 and prevents left / right twisting.

  A lower support plate 115 is also installed at the upper end of the vertical plate 111 of the side frame 11.

  FIG. 19 is an exploded perspective view showing a cable tray connection structure according to the fourth embodiment of the present invention, FIG. 20 is a side sectional view showing the cable tray connection structure according to the fourth embodiment of the present invention, and FIG. It is a front sectional view which shows the connection structure of the cable tray which concerns on 4th Example of invention.

  As shown in FIG. 19 to FIG. 21, the cable tray connection structure has a pair of side frames 11 arranged in parallel to each other at a predetermined interval and having a plurality of connection holes 11 a at both ends, and these side frames. In order to continuously arrange the cable tray in the longitudinal direction, a fastening hole 21 corresponding to the connection hole 11a of the side frame 11 is provided with a cable tray composed of a plurality of hangers 12 that connect and support each other. A connecting member 20 provided to connect adjacent side frames 11 to each other, but to form a protrusion 22 on one side of the fastening hole 21 so as to be inserted into the connecting hole 11a of the side frame 11; A fixing member 30 fixed to the connecting hole 11 a of the side frame 11 and the fastening hole 21 of the connecting member 20, and the outer side of the side frame 11. And, and a ground member 40 and having a coupling hole 41 so as to be secured with the side frames 11 and the connecting member 20 by the fixing member 30.

  In addition, the connecting hole 11a of the side frame 11 may be circular or the like, but in the present invention, it is preferable that the connecting hole 11a is formed in a round slit shape and arranged at the upper and lower portions.

  Further, the protrusions 22 of the connecting member 20 are integrally formed at the time of press molding, and are formed in a rounded rectangle having a shorter length than the connection hole 11a, and the pair of protrusions 22 are in the connection hole 11a. As a result, the coupling force can be improved.

  Further, the connecting member 20 can be coupled to either the outer side or the outer side of the side frame 11, but in the present invention, the connecting member 20 is preferably in close contact with the inner side of the side frame 11.

  In addition, the grounding member 40 is in the form of a copper plate, electrically connects between the side frames 11 of the cable tray, and fixes the side frame 11 and the connecting member 20 with a fixing member 30 as in the conventional case. A separate fixing member is not required.

  That is, when assembling the grounding member 40, a separate fixing member is not required as in the prior art, and the length of the grounding member can be shortened compared to the prior art, thereby reducing costs and shortening the assembly time. be able to.

  The cable tray connecting structure configured in this manner fixes the side frame 11 and the connecting member 20 of adjacent cable trays by the fixing member 30, but the protruding portion 22 of the connecting member 20 is slit in the side frame 11. It is inserted into the shape connecting hole 11a.

  At this time, the length of the protruding portion 22 of the connecting member 20 is shorter than the length of the slit-shaped connecting hole 11a of the side frame 11, and the pair of protrusions 22 are connected to the connecting hole 11a to improve the coupling force.

  Further, by bringing the grounding member 40 into close contact with the outside of the side frame 11 and fixing the connecting member 20, the side frame 11 and the grounding member 40 at once with the fixing member 30, it has excellent assemblability and manufacturing cost. Can also save.

  Even if vibration or an excessive load is applied to the cable tray and the fixing member 30 becomes loose, the coupling force is maintained by the protruding portion 22 of the connecting member 20, and the slack of the cable tray can be prevented as in the related art.

  According to the present invention, by manufacturing the cable tray by an automatic or semi-automatic method, productivity can be improved and manufacturing cost can be reduced, and a uniform cable tray can be manufactured by automation. The present invention is not limited to a cable tray, and is a very useful invention applicable to various industrial fields.

DESCRIPTION OF SYMBOLS 11 ... Side frame 12 ... Hanger 13 ... Connection means 14 ... Connection member 20 ... Connection member 21 ... Fastening hole 22 ... Projection part 30 ... Fixing member 40 ... Grounding member 41 ... Connection hole 111 ... Vertical plate 112 ... Horizontal plate 113 ... Support Plate 114 ... Fixing portion 115 ... Lower support plate 116 ... Through hole 131 ... Bending piece 132 ... Notch portion 133 ... Slot portion 134 ... Embossing portion 135 ... Fastening protrusion 136 ...: Notch portion 100 ... Side frame manufacturing device 110 ... First Uncoiler device 120 ... first level feeder 130 ... first press 140 ... first molding machine 150 ... second press 200 ... hanger production device 210 ... second uncoiler device 220 ... second level feeder 230 ... second molding machine 240 ... first 3 presses 250 ... 4th press 300 ... assembly table 400 ... coating equipment

Claims (15)

A first uncoiler device into which a side frame material steel plate having a predetermined width wound in a roll shape is charged, and a side frame material steel plate which is installed in the vicinity of the first uncoiler device and supplied is horizontally flattened. A first level feeder that is continuously and intermittently transferred, a first press that forms a slot portion and an embossing portion at a predetermined interval on a side frame material steel plate that is supplied via the first level feeder, and the slot portion. And a first forming machine having a number of forming rollers that bend the side surfaces in the width direction of the side frame material steel plate formed with the embossing portion in multiple stages, and a side frame material steel plate whose side surfaces are bent by the first forming machine. A side frame manufacturing device unit comprising a second press for cutting at a predetermined interval;
A second uncoiler device into which a hanger material steel plate having a predetermined width wound in a roll shape is charged, and a hanger material steel plate that is installed in the vicinity of the second uncoiler device and is horizontally flattened and continuously. And a second level feeder that is intermittently transferred, a second forming machine having a number of forming rollers that bend the side surfaces in the width direction of the hanger material steel plate in multiple stages, and a hanger material steel plate on which both side surfaces are formed. It comprises a third press that cuts both side surfaces to form a notch portion, and a fourth press that cuts the center of the notch portion of the hanger material steel plate on which the notch portion is formed and folds to form a bent piece. A hanger manufacturing apparatus unit; and a fixing unit provided to separate the pair of side frames manufactured in the side frame manufacturing step at a predetermined interval, and the fixing A cable tray manufacturing apparatus comprising: an assembly table for inserting a hanger bent piece into a slot portion and an embossing portion of the side frame fixed to the side frame, and assembling the hanger on the side frame. .   The cable tray manufacturing apparatus according to claim 1, wherein a coating apparatus is further installed in the first molding machine and the second molding machine.   A cable tray manufactured by the manufacturing apparatus according to claim 1. The cable tray is
A pair of side frames having a certain length so as to be able to support and fix a cable routed along the wall surface or ceiling, and arranged parallel to each other at a predetermined interval;
A plurality of hangers for connecting and supporting between the side frames;
A coupling means for coupling the side frame and the hanger;
The coupling means includes
Formed by bending both ends of the hanger, a bent piece having notch portions on both side surfaces of the both end portions and fastening protrusions on both side surfaces of the end portion;
A slot portion that is provided on an inner surface of the side frame so that the bent pieces are coupled, and that upper and lower sides are penetrated and fastening fasteners of the bent pieces are locked to lower ends of both side surfaces;
The cable tray according to claim 3, further comprising an embossing portion provided on both sides of the slot portion and pressed against the notch portion.   5. The fastening protrusion of the bent piece is elastically coupled to both side surfaces of the lower end portion of the slot part by forming a notch portion between the fastening protrusions of the bent piece. Cable tray as described in   The cable tray according to claim 5, wherein a fastening hole is formed on the cutout portion of the bent piece, a through hole is formed in the slot portion, and fixed by a coupling member. The side frame is
A vertical plate, a horizontal plate integrally provided at a lower end portion of the vertical plate, and a support plate protruding above the end portion of the horizontal plate, and the lower end portion of the hanger is supported on the support plate. 6. The cable tray according to claim 5, wherein a fixing portion is formed on the cable tray to prevent left / right twisting.   The side frame includes a vertical plate and a lower support body provided integrally with a lower end portion of the vertical plate and tilted upward, and the lower support plate is supported so that the lower end portion of the hanger is supported. The cable tray according to claim 4, wherein a fixing portion is formed on the cable tray to prevent left / right twisting. A number of through holes are formed at both ends of the side frame,
The cable tray is
In order to continuously arrange the cable tray in the length direction, a fastening hole corresponding to the through hole of the side frame is provided, and a protruding portion having a certain height is provided on one side of the fastening hole, A connecting member for connecting adjacent side frames to each other;
The cable tray according to any one of claims 3 to 8, further comprising a fixing member that fixes the through hole of the side frame and the fastening hole of the connecting member to each other.   The cable tray according to claim 9, wherein the connecting member is closely attached to an inner side direction of the side frame.   11. The cable tray according to claim 9, further comprising a grounding member positioned in an outer direction of the side frame and having a coupling hole so as to be fixed together with the side frame and the connecting member by the fixing member.   The through hole of the side frame has a round slit shape, and the protruding portion of the connecting member has a rounded rectangle that is shorter than the through hole, but the pair of protruding portions serve as the through holes of the side frame. The cable tray according to claim 9, wherein the cable tray is inserted. A side frame material preparatory step in which a side frame material steel plate having a predetermined width wound in a roll shape is put into the first uncoiler device, and the side frame material steel plate that is installed in the vicinity of the first uncoiler device and supplied The side frame material steel plate is transferred continuously and intermittently through the first level feeder to be flattened, and the side frame material steel plate supplied through the side frame material transfer step is the first. A side frame material pressing step in which a slot portion and an embossing portion are formed at a predetermined interval by loading into a press machine, and a side frame material steel plate in which the slot portion and the embossing portion are formed in the side frame material pressing step is a first forming machine. And is formed so that both sides in the width direction can be bent in multiple stages by a large number of forming rollers. A side frame material forming step, and a side frame material cutting step in which the side frame material steel plate formed in the side frame material forming step is cut into a certain length by a second press. ;
A hanger material preparation step for feeding a hanger material steel plate of a predetermined width wound in a roll shape into the second uncoiler device, and a hanger material steel plate that is installed in the vicinity of the second uncoiler device and horizontally supplied is flattened. The hanger material steel plate is transferred continuously and intermittently through the second level feeder, and the hanger material steel plate supplied through the hanger material material transfer step is transferred to the second molding machine to make many A hanger material forming process in which the side surface of the hanger material steel sheet is bent in multiple stages by the forming roller, and the hanger material steel sheet that has undergone the hanger material forming process is put into the third press, and both sides are cut at a predetermined interval and notched. Hanger material notch part forming process for forming the part and the center of the notch part formed in the hanger material notch part forming process. 4 were cut by a press, and the hanger fabrication steps composed of a hanger material bent piece molding step of forming a bent piece is bent;
A cable tray in which a pair of side frames manufactured in the side frame manufacturing stage are separated from each other at a predetermined interval, and a hanger folding piece is inserted into a slot part and an embossing part of the side frame to assemble the hanger on the side frame. A method of manufacturing a cable tray, comprising: an assembling step.   The side frame material steel plate forming step or the hanger material forming step of the hanger manufacturing step further includes a coating step of coating the side frame material steel plate and the hanger material steel plate with a surface. 14. A method for manufacturing the cable tray according to 13.   A cable tray manufactured by the manufacturing method according to claim 13 or 14.

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