KR20080090907A - Joint kit for connecting bus ducts using plate type rotation preventing mean - Google Patents

Abstract

A joint kit for connecting bus ducts using a plate type rotation preventing device is provided to prevent short or deterioration by improving the assembly accuracy and stability of a bus bar through a suspension projection at an inner surface of a joint housing. A joint kit for connecting bus ducts includes at least one conductor, at least one insulating plate(33), a joint housing(31), an insulating shaft, a nut, and a bolt. A sliding guide groove(57) is formed at an outer surface of the joint housing. A fixing groove is formed inside the joint kit and inserted into the sliding guide groove. The nut is inserted into the fixing groove. A through hole is formed through to extend the high tension bolt passing through the nut inserted into the fixing groove without interference.

Description

Joint Kit For Connecting Bus Ducts Using Plate Type Rotation Preventing Mean}

1 is a perspective view of a booth duct having a conventional conical connection part.

FIG. 2 is a perspective view showing a state in which the booth duct shown in FIG. 1 is connected by a joint kit. FIG.

3 is an exploded perspective view of the joint kit shown in FIG. 2.

It is a perspective view which shows the connection state of the booth duct provided with the joint kit which concerns on this invention.

5 is an exploded perspective view of the joint kit shown in FIG. 4.

6 is an assembled perspective view of the joint kit shown in FIG. 5.

FIG. 7 is a perspective view illustrating an upper surface of the anti-rotation tool shown in FIG. 6.

8 is a bottom perspective view of FIG. 7.

9 is a perspective view illustrating a top surface of the joint housing illustrated in FIG. 6.

10 is a bottom perspective view of FIG. 9.

It is a top view explaining the assembly state of the booth duct provided with the joint kit of FIG. 6, and the same connection part.

Explanation of symbols on the main parts of the drawings

1: booth duct 2, 3: upper and lower duct

5: side duct 10: duct part

11 busbar 20 connection

30: joint kit 31: joint housing

33: insulation plate 35: conductor

36: high tension bolt 38: nut

39: insulation ring 41, 42: through hole

45: insulated shaft 47: locking jaw

491, 492: jamming protrusion 57: guide groove

61: rotation prevention device (slide plate) 63: fixing groove

65: stop

The present invention relates to a joint kit for connecting a bus duct, and more particularly, a high-strength bolt inserted through the center of the insulating plate and the conductor in the laminated state of the joint kit and the conductor of the joint kit coupled to the busbars of two adjacent connections. Joints for booth duct connections with plate-shaped rotational stops that can be fastened with high-tension bolts without constraining the nut by screwing the nut screwed to this bolt to fix it. Relates to a kit.

In the past, the wiring method using wire cable has been widely adopted as the power wiring method. However, in recent years, as the power demand of buildings such as high-rise buildings, apartments, and large factories has increased rapidly, the adoption of the wiring method by booth ducts using busbars has been spreading. It is becoming. Booth ducts and cables have a common point in that they have conductors and insulators, but compared to cables, booth ducts can carry large amounts of current through the conductors, protect the conductors and insulators as metal ducts, and expand It is possible to move and move, to deal with accidents in case of accidents, and to manage the system.

As an example of such a booth duct, the booth duct 101 shown in FIG. 1 is mentioned. The booth duct 101 is a booth duct provided with the same type of connection part having the same shape of the connection part 120 formed at both ends of the duct part 110. As shown, the duct part 110 and both ends of the duct part 110 are shown. Consists of the same type of connection portion 120 formed in. Here, the duct unit 110 is composed of a side duct 105 connecting the upper duct 102 and the lower duct 103 and the upper and lower ducts 102 and 103, and the side duct 105 is predetermined along the center line. While the plurality of reinforcing screw portions 109 are fastened at intervals, the connecting portion 120 includes a plurality of bus bars 111 exposed to the outside from the duct portion 110.

In addition, in the joint kit 130 mounted between two adjacent duct parts 110, as shown in FIG. 2, the bus bar 111 is inserted into the left and right between the two duct parts 110 arranged in a straight line, thereby allowing the duct part to be mounted. The busbars 111 of 110 are physically and electrically connected to each other.

In the conventional joint kit 130, as shown in FIG. 3, a plurality of insulating plates 133 and a plate-shaped conductor 136 insert the busbars 111 between the front and rear joint housings 131. They are stacked at regular intervals, and the high tension bolt 135 penetrates and is inserted in the center of the outer surface of the joint housing 131 with a disk spring 134 such as a washer interposed therebetween, so that the plurality of insulating plates 133 and the conductors are inserted. 136 is fastened in a pressurized state.

At this time, the high-strength bolt 135 is a joint housing 131 at the back of FIG. 2, that is, the bottom of FIG. 3 to tie the plurality of insulating plates 133 and the plate-shaped conductor 136 into one, as shown in FIGS. 2 and 3. The screw portion that is inserted into and exposed to the center of the opposite joint housing 131 is fixed by engaging with the nut 138. In FIG. 3, reference numeral 141 denotes a through hole formed in the insulating plate 133 and the conductor 136, 142 illustrates a through hole formed in the joint housing, and 145 illustrates an insulated joint inserted into the through holes 141 and 142. It is.

However, in order to fix the high tension bolt 135 with the nut 138, the nut 138 needs to be held together with the bolt 135 so as not to rotate when the bolt 135 is rotated. ) And the work to hold the nut (138) must be done at the same time, the construction work is cumbersome, long time, and if the work is not done correctly, problems such as short circuit or deterioration during the use of booth duct There was this.

In addition, as a more improved form to solve the above problems as shown in Figures 2 and 3, the nut rotation prevention tool 143 has been employed. The anti-rotation tool 143 is a kind of bracket and is fitted to the outer circumferential surface of the nut 138 to be fixed to the joint housing 131 to prevent the nut 138 from rotating relative to the joint housing 131. Likewise, fixing the bracket 143 to the joint housing 131 is very cumbersome, requires a long time, and has a problem of causing a failure of the joint kit when the fixing is poor.

The present invention has been proposed to solve the problems of the conventional joint kit for connecting the booth duct as described above, plate-shaped anti-rotation of the nut coupled to the high tension bolt to tie the plurality of insulation plates and conductors stacked together. On the other hand, by forming guide grooves facing each other side by side on the outer surface of the joint housing so that the plate-shaped rotation stopper is slidably inserted into the guide groove to facilitate the attachment and detachment of the rotation stopper to facilitate the assembly work of the joint kit. The purpose is to improve gender and accuracy.

In order to achieve the above object, the present invention provides a joint kit for connecting a bus duct connecting the duct part by connecting to the connection part busbars of the lateral side facing each other between two adjacent duct parts, the joint kit is a through-hole At least one conductor formed, at least one insulating plate having a through hole, a joint housing having through holes formed therein to protect the conductor and the insulating plate from both sides, an insulating shaft inserted into the through hole, and a nut inserted into the insulating shaft. It is made of a bolt that is assembled with

A sliding guide groove is formed on an outer surface of the joint housing, and a fixing groove inserted into the sliding guide groove and into which the nut is inserted is formed inward, and the high tension bolt passing through the nut inserted into the fixing groove is extended without being disturbed. It is characterized in that the through-hole so that it can be through.

The guide grooves are formed to be concave so as to face each other side by side on the outer surface of the joint housing so as to slide the rotation preventing device.

The joint housing is characterized in that the stop jaw is protruded on the inner surface to contact the end surface of the bus bar inserted between the insulating plate.

The joint housing is characterized in that both sides of the corner portion that meets the inserted busbar is opened in a funnel shape.

On the other hand, in the method of manufacturing a joint kit for connecting a bus duct connecting the duct part is coupled to the connection busbar of the side end facing each other between two adjacent duct parts according to the present invention, the joint housing is made of aluminum It is characterized by producing by extrusion molding.

The joint housing is characterized in that it does not paint the contact surface with the contact plate.

Hereinafter, an embodiment of a joint kit for connecting a booth duct to which a plate-shaped rotation preventing device according to the present invention is applied will be described with reference to the accompanying drawings.

The booth duct to which the joint kit of the present invention is applied is internally formed by the upper and lower ducts 2 and 3 and the side ducts 5, similarly to the booth duct having a generally homogeneous connection, as shown by reference numeral 1 in FIG. 4. A duct part 10 surrounding the bus bar 11 of the bus bar, and a connection part 20 formed at both ends of the duct part 10, and between the left and right two duct parts 10, the bus bar 11 on the left and right sides is formed. The joint kit 30 is physically and electrically connected to both connecting portions 20 to connect the joint kit 30.

Here, the joint kit 30 of the present invention, as shown in Figure 5 again the joint housing 31, the insulating plate 33, the conductor 35, the high-tensile bolt 36, the insulating shaft 45, etc. First, the joint housing 31 is a pair of upper and lower plate members serving as clamps as shown in FIG. 6, and the joint housing 31 closely adheres to the outer surfaces of the plurality of stacked insulating plates 33 and the conductor 35. It is bound to protect it. The joint housing 31 further has a through hole 42 through which the insulating shaft 45 and the high tension bolt 36 inserted into the insulating shaft 45 pass.

On the other hand, the insulating plate 33 is stacked between the joint housing 31 by a plurality of intervals by the insulating ring 39 to sandwich the plurality of busbars 11, between the inserted busbar 11 phase Keep it insulated. At this time, the insulating ring 39 maintains a constant distance between the insulating plate 33 and the conductor 35 to be laminated, and prevents the insulating plate 33 and the conductor 35 from moving arbitrarily. In addition, the conductor 35 is a plate-shaped component having a smaller width than the insulating plate 33 as shown in the figure, one by one in front of and behind the bus bar 11 so as to be electrically connected in contact with the bus bar 11 sandwiched between the insulating plates 33. Two are attached to each other, and a through hole 41 through which the insulating shaft 45 passes is formed in the center thereof.

In addition, the high-strength bolt 36 is a fastening means for tying the plurality of insulating plates 33 and the conductors 35 stacked between the joint housings 31 as one, and preferably can withstand high tensile force, such as a double head joint bolt. A bolt is used, and the disk spring 34 serving as a washer is inserted between the joint housing 31 and the nut 35 is inserted through the joint housing 31, the insulating plate 33, and the conductor 35 in order. 38), the insulating plate 33, the conductor 35, the insulating ring 39 and the like laminated on the inside of the joint housing 31 are strongly pressed to bind them together.

Finally, the insulating shaft 45 is inserted into the through hole 42 of the insulating plate 33 and the conductor 35 so that the joint kit 30 surrounding the high tension bolt 36 has a relative movement such that it can be folded in the axial direction. The female and female hollow shaft parts 451 and 452 are coupled to each other, and the female and female hollow shaft parts 451 and 452 have locking jaws 471 and 472 at upper and lower edges thereof, and the locking protrusions 491 and 119 are directly placed thereon. 492 are respectively protruded and fitted to the inner wall of the through hole 42 of the joint housing 31 to be fixed.

However, as shown in FIGS. 5 and 6, the joint kit 30 according to the present invention is stacked to bind the plurality of insulating plates 33 and the conductors 35 stacked between the joint housings 31 to one. The high tension bolt 36 is inserted into the through-hole 41 of the insulating plate 33 and the conductor 35 and the nut 38 is fastened to the end of the threaded portion. In order to prevent the rotation with the nut (38) on the anti-rotation bracket 61 is to be fitted at the same time, the sliding guide groove (57) on the outer surface of the joint housing 31 to fix the anti-rotation hole (61) It is intended to form.

Here, the anti-rotation device 61 is a flat slide plate which is slid into the guide groove 57 of the joint housing 31 as shown in Figs. 7 and 8, in the form of a nut fitted over the nut 38. It is formed in the center of the inner surface of the fixing groove 63, the bottom of the fixing groove 63, the end of the bolt 36 passing through the nut 38 so that the end can be extended long without being disturbed (67) Is penetrated.

On the other hand, the guide groove 57 formed on the outer surface of the joint housing 31, as shown in Figure 9 and 10, the through hole 42 to push the anti-rotation, that is, the slide plate 61, Bars are formed side by side facing each other at regular intervals to the center, guide rails 69 for processing the guide grooves 57 for this purpose is formed to protrude side by side on the outer surface of the joint housing (31).

In addition, the joint housing 31 has a stopper 65 protruding from the bus bar 11 so as to be perpendicular to the bus bar 11 insertion direction to stop the bus bar 11 inserted between the insulating plate 33 and the inner side of the joint housing 31. Both sides edge portion 71 is formed in a funnel shape so that the bus bar 11 to be inserted is guided inward without being caught.

Now, the operation of the joint kit according to an embodiment of the present invention configured as described above.

Joint kit 30 according to the present invention is assembled as shown in Fig. 5, the joint housing 31 and the insulating plate 33, the conductor 35, and the insulating ring 39 are sequentially stacked as shown By inserting the insulating shaft 45 through the through-holes 41 and 42 of each member, and then passing the high tension bolt 36 into the insulating shaft 45 to join the nut 38 on the opposite side The members are bundled together.

To this end, the insulating shaft 45 must first be inserted into the through-holes 41 and 42 of each member, and the female hollow shaft portion 451 of the insulating shaft 45 is inserted below the lower joint housing 31. The hollow shaft portions 452 are respectively inserted above the upper joint housing 31.

The nut 38 is then fastened to the end of the high tension bolt 36 exposed out of the joint housing 31 as shown in FIG. 6, with the nut 38 first being pushed into the slide plate 31 shown in FIG. 8. After fitting into the fixing groove 63 of the slide plate 31 in the state in accordance with the guide groove 57 of the joint housing 31 shown in FIG. Then, the fixing groove 63 is roughly aimed at the center of the bolt 36 to stop the slide plate 31.

When the slide plate 31 is thus prepared, the high tension bolt 36 is pushed all the way into the through holes 41 and 42 to the nut 38 to secure the finally stacked parts to the bolt 36. By the assembly of the joint kit 30 can be completed.

In addition, as shown in FIG. 11, when the bus bar 11 is inserted into the joint kit 30 assembled as above, the bus bar 11 inserted between the joint housing 31 and the outermost insulating plate 33 is provided. There is no fear of being damaged by being guided inwards safely by the housing edge portion 71 that is formed in a funnel shape, and the end surface of the busbar 11 is caught by the stopper 65 so that the insertion is completed, thereby stably opening the busbar 11. Can connect

On the other hand, the joint housing 31 is manufactured by extrusion to increase the strength and elasticity, and have a variety of lengths in accordance with the length change of the joint kit 30, and is made of a conductive material such as aluminum to improve the grounding ability It is preferable not to paint on the contact surface with the plate 13.

As described above, according to the joint kit of the present invention, in fastening with a high tension bolt and a nut penetrating these parts so as to bind the laminated insulating plate and the conductor into one, they are pushed into the guide groove formed on the outer surface of the joint housing. By restraining the nut by the fixing groove of the slide plate, it is possible to complete the bolting operation more conveniently simply by tightening the bolt from one side without gripping the nut separately.

In addition, the simple operation of pushing the slide plate into the guide groove enables the slide plate, which is an anti-rotation lock, to be fixed to the joint housing, thereby simplifying the assembly of the joint kit, thus improving the productivity of the joint kit and further the booth duct. It can be improved.

In addition, since the assembly accuracy and stability of the busbar is increased by the locking step formed on the inner surface of the joint housing, it is possible to reduce the failure accident due to short circuit or deterioration of the joint kit.

Claims (6)

In the joint kit 30 for connecting the duct part 10 which is coupled to the connection part busbar 11 of the side ends of the duct part 10 facing each other between two adjacent duct parts 10 to connect the duct part 10. In The joint kit 30 includes at least one conductor 35 having a through hole 41, at least one insulating plate 33 having a through hole 41, and a through hole 42 formed at both sides thereof. The joint housing 31 for protecting and supporting the 35 and the insulating plate 33, the insulating shaft 45 inserted into the through holes 41 and 42, and the nut 38 being inserted into the insulating shaft 45. It is made of a bolt 36 is assembled with A sliding guide groove 57 is formed on an outer surface of the joint housing 31, and a fixing groove 63 inserted into the sliding guide groove 57 and into which the nut 38 is inserted is formed inward, and the fixing groove ( Joint kit for connecting the bus duct, characterized in that the through-hole (67) is penetrated so that the high-tensile bolt (36) passed through the nut (38) inserted into the 63) can be extended without interference. According to claim 1, The guide groove 57 is a joint kit for connecting the booth duct, characterized in that the concave formed so as to face each other side by side on the outer surface of the joint housing 31 so as to slide the slide plate (61). . According to claim 1, The joint housing 31 is a joint for connecting the bus duct, characterized in that the stop jaw 65 is protruded on the inner side so as to contact the end surface of the bus bar 11 inserted between the insulating plate 33. Kit. The method of claim 3, wherein The joint housing 31 is a joint kit for connecting the bus ducts, characterized in that both side edge portions 71 are formed in the shape of a funnel meeting the bus bars 11 to be inserted. A joint kit 30 for connecting the duct part 10 is connected to the connection part busbars 11 of the side ends of the duct part 10 facing each other between two adjacent duct parts 10 to connect the duct part 10. In the manufacturing method, The joint housing 31 is a method of manufacturing a joint kit for connecting a bus duct, characterized in that the production by extrusion molding aluminum. The method of claim 5, The joint housing (31) is a method of manufacturing a joint kit for connecting a bus duct, characterized in that the contact surface and the contact plate 13 is not painted.

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