JPS60203540A - Explosion-proof feeder bus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Field of Application 411 on the seat strip - The invention is based on the invention, which is characterized in that the end portions of the seat strips are connected to each other by means of an elastic protection device, and are filled with a protection gas. A rigid duct part with a similar ridge having a rectangular cross-sectional shape has a downwardly sealed vertical slit, and a vertical slit is provided in the electrical area of the vertical slit and installed in the duct decoration part. The current extraction carriage is equipped with an explosion-proof electric conductor which is drawn out through the vertical slit by a take-out arm, and a sliding contact for a current extraction train that engages with the gas conductor. Regarding my mother.

This type of power supply busbar is known (see, for example, West Germany Publications No. 2522319, No. 2522620, and No. 2522321).

This external power supply busbar is intended to supply electricity to machinery installed in the pile interior space, which is at risk of explosion. This type of power supply bus has a problem in that the duct (fiis) with a rectangular cross section that forms the duct must be formed relatively small and assembled on site for reasons of transportation in the wiping machine. In this case, there are challenges during assembly, especially in that a great seal must be achieved at the joints. This kind of known structure of the feeder bus has the following drawbacks. That is, in the assembled state, the separation generatrix has a characteristic 1-1j property, and the attachment caused by the influence of heat or the fifth position of the rock, for example, cannot absorb the change in position into the ring, and its As a result, there is a risk of leakage if significant leakage points are formed not only at the connection or joint but also at other points.

For my own reasons, I am invited again! l! It is also already known to form a duct for an iL crossbody from a slit or a deformed elastic hose provided with a Krd interlocking body between the internal walls (see German Patent Publications No. 6009054 and No. 6009054). (See No. 3123221). Wrap the hose around each other
In this known flying kite, which also makes it possible to transport it in a folded state, the above-mentioned problems when coupling a number of rigid duct parts together are avoided, but the object A disadvantage is that the sealing at the longitudinal slits, which is required for leak-tightness and the tight seal created, cannot be achieved in a simple manner.

Another publicly known proposal (Nishitsurusakikenkao-publication No. 6208754
According to No. 1, the issue of temporary sealing and the friction and tension that arises between it and the current extraction arm can be solved so that no or only a small amount of elastic stress is applied to the N part. However, the structure involved in this proposal also has some drawbacks.

That is, it is necessary to provide a special guide female line in the current extraction part, and its anastomosis, and the capital within this section is given a special sealing ~ f circumference, and the sealing gap is passed through, and the 01 It must also be densely layered over the amount of the withdrawn capital, and must again enter the sealed gap beyond the current withdrawal counterfeit. Such a structure may be prone to failure.

OBJECT OF THE INVENTION The main object of the book @ Ming is that it is possible to easily and reliably install a power supply bus of the type mentioned at the beginning, which is made up of a rigid duct section, and also to a degree that consists of 2! ! It is composed in such a way as to protect women and ensure the hermeticity of the lineage.

Clear Stream of the Invention The present invention provides a restraining device that does not require any ambiguity in the joining point of two mutually abutting duct parts and zero movement relative to the duct parts.
It consists of a U-shaped curved member disposed in a T-shape, and a sealing band pressed against the outer surface of the duct portion by the curved member.

The above configuration has the advantage that assembly is very simple. This is because all you have to do is attach a seal band that matches the outside dimensions of the end of the duct, wrap it around the area, and press it airtight with a U-shaped curved member to prevent storm damage. It is. In this case, it is advantageous for the sealing strip to be made of a rubber elastic material and provided with openings for form-locking attachment to the duct part and to the projection of the U-shaped bend. In this way, accurate positioning of the sealing strip is ensured and the installation is force-independent.

A particularly advantageous and important embodiment of the invention is that the U-shaped bend can be constructed in a simple manner from two halves that can be joined to each other in the longitudinal central plane, so that the installation is even easier. In an embodiment, the dimensions of the U-shaped curvature are set in such a way that, relative to the dimensions of the duct part, a surrounding receiving space is created for the sealing band which corresponds to the thickness of the sealing band. In order to determine the size of this receiving space, it is expedient to arrange a spacer between the U-shaped bend and the end of the duct part. In this way, the following advantages can be obtained. In other words, the surrounding sealing band is not crushed to a desired thickness or less at any point;
A small but sufficient initial stress is applied to ensure the required sealing, and there is a risk of leakage points resulting in damage at specially stressed points due to movement between mutually adjoining duct parts, etc. This has the advantage that it is avoided. In this connection, it is important that the longitudinal corners of the duct part and the U-bend are rounded, so that the sealing band is not damaged by sharp edges. In this case, the radii of curvature of the rounded portions of the duct portion and the curved member are made different so that the center point of the curvature of the rounded portion of the U-shaped curved member is the same as the center point of the curvature of the rounded portion of the duct portion. can be located deep inside. According to this configuration, the sealing band is not substantially displaced when the curved member is attached, so that the attachment becomes easy.

Additionally, this configuration achieves a foreseeable greater compression of the elastic sealing material at each of the longitudinally rounded longitudinal corners of the duct section, thereby achieving The sealing at the corners of the direction can be made sufficiently good.

Furthermore, as already mentioned, according to the invention, in order to be able to allow a certain degree of relative movement of the individual duct parts and to ensure that the sealing is not adversely affected by such movement, It is proposed to connect mutually abutting duct parts to each other by means of a joint-like connecting element, which allows for angular deviations in the two axial directions within a limited range. This is a lock JI! arranged on both sides of the U-shaped curved member. This is achieved by providing the element as a connecting element. In this case, the braking element engages in a form-locking manner behind the edge of the end face of the duct part, allowing the duct part to move relative to each other. This chain is constructed as a two-arm lock, and the above-mentioned spacer is provided on its shaft so that the spacer passes through one of the openings of the seal band. To! I tablet! *Kashi in the system
70F1111 forming a striped pattern extending to 70F1111,
The IIX cap plate has an opening located inside the collar,
It is expedient for a bolt-shaped stopper to be engaged with play in this sJ opening, and for the blade assembly stopper to be integrally connected to the end of the duct section. The bolts and the seam plate act as limit stops for relative movement of duct) til1. However, this does not prevent the interlock itself. The range of this interlock also serves as an element to ensure that the seal is not adversely affected in any case.

In order to make the duct part M:l''J, a Litz seal is provided on the longitudinal slit composition.This ridge seal is
Attach the seal lip (tiger M lip) that extends internally and externally. This Litz seal is preferably held on a monument of the duct portion in a shape-restricted manner. In this case, the bracket can be formed in a simple manner by an angularly bent retaining plate which is defined with the duct part in the region of the slit in the direction of the direction. This holding plate can be disposed on the inner surface of the duct portion, and at the same time, it can also form a system path for quickly starting the current range.

Additionally, the shock plate provides reinforcement at the distal end of the duct section and serves to prevent stress from being transferred from the rigid duct section to the seal. 70. The friction between the current area arm of the current trolley and the horn seal depends exclusively on the corresponding pressure contact force of the sealing lip.

Furthermore, in order to simplify assembly, the duct segment is constructed from two halves that are symmetrical with respect to a common pulvinar gyrus central plane, and these halves are extended inward. existing U'
The rails are held together by a rail-like member with an F-shaped cross section, and the rail wheels are simultaneously used as a system for the current take-out carts, so that the current take-out carts are placed in the system at six locations, according to the present invention. It is necessary to ensure movement within the current take-off main fiber.

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following, the present invention will be explained in detail with reference to the examples shown in the drawings.

1 and 2 show a duct part 1 for an explosion-proof power supply busbar according to an embodiment of the invention, of approximately rectangular cross-section with a longitudinal slit 2 directed downwards.

Note that the longitudinal slit 2 is sealed in a manner that will be described in detail later in connection with FIG. The rigid duct part 1 is held by a U-shaped coupling member 3 which fits externally onto the biduct part.

It is assembled using the connecting member 3 in a manner not shown. The connecting member 3 has two angular split connecting parts 3.
These divided connecting parts are respectively welded to the two halves 1a and 1b of fils, and are fixedly connected to each other by screws etc. at the upper bracket part. . The duct part 1 shown in FIG. Character-shaped curved member 5
a seal (not shown in FIG. 1) located on the underside of the holder. The U-shaped curved member 5 is located on the left side in FIG.
A plane 7, which is perpendicular to the plane 7, is shown. A U-shaped curved member 5 is likewise provided at the right end of the duct section 1, and this curved member 5 constitutes a sealing device 4 together with a seal not shown in FIG. The right end face is hermetically connected to a termination member 8 for closing. The other termination members are shown in detail in FIGS. 6 and 7.

Inside the duct part 1 and all other duct parts that are airtightly connected to the duct part through the containment seal [4],
'a'A body 9 furnace body 9 is present, and the 'a' electric body is I
sS diagram and the delay [As mentioned, by extrapolation of duct part 1, for example, when offering '1 stream to a room with a danger of explosion in a temple in a temple or a machine temple installed in the 9th room, It is used. The # flow is taken out in the manner described with reference to FIG.

As is clear from FIG. 5, the valley duct consists of two housing halves 1 a + 1 b, which are symmetrical with respect to the longitudinal central plane 10. 44, and are connected at a point 11 along the plane 1 (jK) and fixedly mechanically connected via a rigid U-shaped 1cl'r surface section or rail 12 by screwing or a similar method. Also, as is clear from FIG. .The multiple tsuzo seals include:
A pair of internal lips 14ai and a pair of external lips f14b
These lips seal the pressurized A body of the duct S and prevent the involuntary entry of 4 ductile elements or decorations into the internal space. .

Sealing lip pairs 14a, 14a' and 14b
*The free ends of 14b' fit into each other at the longitudinal center 10 Lu1l (11).The two mutually sharp-faced porcelain/red seals 14 each have a base 15 in which a slit is formed. and 15' are provided, the bases of which connect the two housing or duct halves 1
The free end of the slit 2 in the direction of the plate axis of a#1b is held by the shape '$', which makes a low-pitched sound. These rules are arranged on the inner walls of the valley housing halves 1a and lb (see FIG. 5), and the inner walls KLI! It is formed by the f4 part @'16 connected to the L1 tail.

The cough holding member 1bi is bent into an angular shape,
Its inwardly bent legs lba simultaneously form a guide space for the -44 outgoing wagon. Regarding this matter, I will explain it by referring to Fig. 5. On the outside of the /S housing or duct halves 1a% and 1b, separate holding sections 17 are attached to the cup of the Chichito time slit 2, and the bent yiiiIi portion of the holding section 11 is The seal base 15 is assembled in the slit of 1b',
As a result, the two sealing elements 15.degree. 1b' are held in a form-constrained manner in the duct part 1. As is clear from FIG. 6, the lip seal 15 is
, 15' shape and retention = uM are tied to the rope by the inwardly bent ends S of the U-shaped shackle S material 5.

As is clear from FIGS. 6, 4 and 5, the problem of sealing the rigid duct parts together in the non-conventional embodiment is that the problem of sealing the rigid duct parts together is due to the need for a thick seal consisting of a seal or a seal 18. , 2 sleds (& the duct setsubun 10 laps l
d and insert the U-shaped shackle member 5.
This is solved by pressing these duct parts 1 or their end parts. In this case, as can be seen from FIGS. 3, 4 and 8, the seal 18, which is made of a sponge-like material, should be pressed as little as possible against the wall to be sealed. That is, duct part 1
A U-shaped curved member 5 surrounding the outer wall of the duct and the outside of the duct.
A substantially uniform ring-shaped intermediate chamber is formed between the inner wall of the seal 18 and the inner wall of the seal 18, and the seal 18 is held within this intermediate chamber without being subjected to large compressive stress. This is achieved by providing spacers 19,20 in the upper part of the duct part as well as in the two side walls, which serve to limit the deformation of the seal 18. The spacer 19 provided at the upper part of the duct portion 1 is composed of a threaded bolt having a disc-shaped arc, and the large diameter collar 21 provided around the circumference 9 of the head is connected to a substantially rectangular joint plate 22. The joint plate is made to be able to be displaced relative to the spacer head 19. The spacer bolt constructed in this way is fixedly screwed onto the duct part 1 by means of a nut 23.

In addition, the side wall has a large diameter force 2 provided in the head 20.
- 24 abuts against the inner wall of the U-shaped curved member 5, maintains the distance a between the U-shaped curved member 5 and the duct portion 1, and, as shown in detail in FIG. , a spacing bolt structure is provided which forms a longitudinal slot in the direction of the axis 6 of the duct section 1 (see FIG. 1) and slidably holds the seam plate against the spacer 20.24. The joint plate 25 is swingably mounted on the cylindrical part 27 of the rotatable bolt 2B, as is clear from FIGS. 6 and 4, while the bolt 28 is mounted on a bim or a rigid material. duct parts IX' which are sealed by a disc 29 and a metal disc 30 and a nut 31 and which in their rotational position are held against the outer wall of the 9U-shaped curved member by frictional forces and which abut each other with their end faces; Onitama and 1' to X\
transitions to a locking member 32 inside the screw 28
As shown in FIG. 4, the duct swings as the duct rotates and locks onto the two duct halves that abut each other. The joint plate 2b is identified by the crack pin 63 at the spigot-shaped post 21 of the bolt 28.

Furthermore, as is clear from Figure 6, rounded portions 35 are provided at each of the four corners of the duct portion 1, and the corresponding square cotton of the U-shaped strap 5 also has rounded portions 34. or is formed. However, the center point M1 of the radius R1 of the rounded portion 35 is not one mile away from the instep point M2 of half mR2 of 9*34. That is, the center point M2 is displaced in the direction towards the center of the internal space of the duct part 1, and in the illustrated example extends at an angle of 45° with respect to the side walls of the duct part 1, forming the 90 degrees C. It is located in a plane that bisects an angle of .

Once, it was 1t4. Between fls34 and 35,
There is a spacing of less than 1 mm between the mutually parallel walls of parts 5 and 1. When the seal 1d shown in Fig. 8 is installed around the duct part 10, the other 11 Al
It is compressed much more than w. In this way, Yj
In some parts or applications that are a liability to the seal, a large pressure force is generated to further ensure the seal. Referring to FIG. 8, the sealing strip 1 is preferably made from Sbonzo rubber.
8 has a number of openings or notches 4o.

41 and 42 are provided, among which opening 4
u is the spacer capital U'19't at the upper side of duct part 1
The opening 41 has a contour corresponding to the contour of the joint plate 22 thus held, and the opening 41 is 1 ita in the area of the locking member 32.
The outer dimensions of the joint plate 25 located on the side are the same. The circular aperture 42 accommodates a swage-type bolt 43 connected to the duct item 1. In addition, the porto 43 is a U-shaped shackle group @5 or a state J that is not attached to the principal metal.
It functions to hold the attached Sea A/Ei 18 in the vicinity sail area of the vertical force slit 2.

The assembly of the electric power train penitentiary by this gate is carried out as usual. Duct sections 1 arranged in end-to-end relationship with each other are designated as 1. The shackle 3 is fixed in a suitable manner, and the mutually adjacent end surfaces of the duct portions are positioned so as to face each other and substantially align with each other. Then, between two duct parts or between a number of mutually adjacent duct' parts 1, a fifth
As shown in the figure, the base of the lip seal is, is'
Attach the lip seal by pushing it into the groove formed in the retaining plate 16. Subsequently, the retainer plate 17 is attached. Next, a sealing device 4 is installed at the closing point between the duct sections. In that case, two mutually bordering duct parts 1 have #
1 lays the sealing band 18 shown in FIG. 8 on the end portions that are flush with each other. This sealing band 18 is connected to the spacer member 19.2.
3 and 20.23 are installed after the joint plates 22 and 2.
5 and port 43 in a shape-restricted manner. In the region of the curved part 5 where the retaining plate 11 is not arranged, the underside of the lip seal 15, 15' is exposed. Next, a U-shaped curved member 5 consisting of three parts is attached. In that case, the web part of the U-shaped shackle consisting of the two upper parts 5c and 5d is installed with the upper wall part 5e fixedly attached to them. The wall parts 5f and 5g, which are separated from the wall part 5e at a position 45, are then screwed together with the associated curved parts 5a and 5b at their flange ends 46 and 47, so that the U-shaped curved member 5 is This is its final form. The lower free ends of the wall portions 5g and 5f are inserted into the slit-like groove of the base 15, 15' of the lip seal, so that the affected part of the seal is also held fixed in the area between the retaining plates 17. do. Finally, the rotating bolt 28 with the locking element 32 is inserted into the opening formed for it in the wall part 5f, and the locking element 32 is inserted into the opening formed in the free end faces of the duct parts 1 and 1'. It engages with the intervening space 48 that exists.

In this case, the locking member 32 is rotated by 90 degrees with respect to the position shown in FIGS. 4 and 6, so that the intervening space 4
8 is inserted.

After that, by rotating the locking member 90' with the bolt 28 (this can be recognized from the outside of the screw 28 by the position of the driver slit 50), the upper self-locking part shrine 32 is turned. are held against the back surfaces of the end edges of the duct sections 1 and 1' adjacent to each other to ensure coplanarity between these end edges. 7e Oh, during this time...
The mesh plate 25 provided between the walls between the members 5 and 1 also participates in the formation of the groove. In this way, the two duct parts that are in visual contact with each other are well sealed. However, due to the fact that the relative rotational movement of the spacer members 20 of the duct parts 1 and 1' about the axis of the spacer members 20 (movement in the rotational direction X shown in FIG. .That is, the U bill ＼Hess ＼Jung Gai 5, the lower part of the duct part 1,
1' in a shape-restrictive manner, and on the other hand, the head of the cylindrical screw is connected to the top of the upper joint plate 220. The vertically long hole formed in the cap plate 22 allows the interlocking movement centered on this X axis to be mlJ.
m. The rotation of the 411 center that creates the vertical center half plane 10 is also the opposite 12J110, which is the rotation shown by the arrow Y in Figure IIJJ5, and this is due to the following argument. That is, the spacer M14m2υ is fitted with play in the lower region of the side wall into the associated opening 26 of the grain plate 25,
This results in the fact that the relative displacement of the ends of the duct sections 1 and 1' is t+J.

@The locking member 32 allows such movement.

In this way, the current take-off cart 55 (FIG. 5) travels in a known manner following the power supply bus constructed and sealed. The upper part of the carriage is guided by a U-shaped rail 12 via a guide roll with side edges 57.'The sliding contact 58 of the current take-off unit 55 is mounted on the contact rail 12. The extracted electric energy is connected to the ring body 9. The extracted electric energy is extracted to the outside by pressing the extraction arm 59, which is shaped like a sword and has a slit at the point where it passes through the lip seals 15, 15'. It will be destroyed.

- One of the duct sections 1 must be filled with preferably inert gas under pressure.
An 'A'tB closure part must be provided at one end of each. This temporary heir must also be given pressure resistance. For this purpose, a termination member 8 is installed as shown at the end of the duct section 10 in figure w11. This formation 4 piece 8 is installed in the air circulation on one side in the same way as another duct section with a U-shaped shackle 5. The connection neck s60 of the termination member 8 is pressure resistant against the gas filling the internal space S! I! This can be achieved by providing a fitting means. immediately),
Joint plates 62, 63 and 64 are welded to the four outer walls of the neck s6u, and tension bolts 65 for airtightly attaching the end plate 66 are screwed to these joint plates.
and the end face of the neck s60, there is a sponzo rubber seam At1
7 and press-fit the screw 68 provided with this sealing leakage prevention into the horn seal 14 from the end face side, thereby airtightly sealing it against the lip sea/I/14.
Maro. Also, attach W: # plate 66 to neck ff1s60.
i! i1 It is also a scolding to be aggressive. According to the illustrated embodiment, by omitting &66, there are five advantages when access to the inside of the power supply (contact) or OJ' is provided.

41. Figure 1 is a diagram showing how to assemble the free-flowing frost base line.
Dependency on duct parts not marked with other figures on the side
c-Ffi is provided and the end closure is formed on the other side, FIG.
The dark passage of the duct part in MI-H ~ [Top view, Figure 6 is a side view of the Buddha Daihaku in the cover of Figure 1, and is a diagram showing the construction of the connection part, Figure 4 is 1,245 figures m IV
- A partial cross-sectional view of the connection part at IV, FIG.
Fig. 6 is an enlarged cross-sectional view similar to the cross-sectional view of the duct part in Figure 1...-■, but without the current take-off cart that is guided inside. FIG. 7 is a partially cutaway side view of a termination member provided for
The figure is a partially cutaway front view of the sealing plate of the termination member in Figure 6, and Figure 8 is a plan view showing the flat sealing band used at all the connection points. FIG.

1...Duct part, 2...Vertical slit, 3...
・Installation: shackle, 4...sealing device, 5...U
Character-shaped curved member, 8... Termination member, 9... Electric conductor, 12... U-shaped rail, 13... Insulation stand, 14...
...Lip seal, 15...Lip seal base, 16
゜17...Holding member, 1a+ 1b...Duct halves, 3a, 3b...'Divided curved portion, 14a
, 14a'; 14b, 14b'... sealing lip pair, t
6a... Leg portion, 18... Seal band, 19.20...
・Spacer, 21.24, 27...Color, 22.2
5,62.63,64...joint plate, 23.31...
Nut, 28.43...Pol), 29.30...Disc (washer), 32...Lock member, 33...Cracked bottle, 34° 35...Rounded part, 40,41 , 42... Notch (opening), 50... Slit, 55... Current extraction trolley, 56... Support roller, 59... Arm,
65...Tension port, 66...Sealing plate.

Figure 3 Figure 4

Claims (1)

[Scope of Claims] 1. A large number of rigid duct parts each having a substantially rectangular face shape, which are fitted together via an elastic temporary sealing device and filled with gas. Consisting of
A vertical slit facing downward, and a ridge take-out trolley that is attached to the MJ dynamic contact body, which is provided in the definition of the vertical slit and installed in the front mll duct part. A guide path or a power supply path for the purpose, in which the stream extraction cart approaches the vertical slit and is pulled out to the outside by a coffin arm,
A U-shaped bowl is disposed in an interlocking manner after the above-mentioned yellow seal table (4) is connected to the two mutually bordering duct parts (1, 1'). 1
11i Ikuoke (5) and the curved member make a dull belt (18)
An explosion-proof power supply bus comprising: 2. The sealing band (18) is made of elastic material and is attached to the duct part (1, 1') and the protrusion part (22, 25, 43) of the U-shaped curved member (5) in a trap-shaped manner. The explosion-proof power supply busbar according to claim 1, comprising openings (40, 41, 42). 3. Explosion-proof power supply busbar according to claim 1 or 2, wherein the U-shaped curved member (5) consists of three curved parts (Set 5fl 5g) that can be joined to each other. 4. The dimensions of the T-shaped curved member (5) are the same as the duct part (
1, 1'), the thickness of the sealing strip (18) a) K is adapted such that a corresponding enclosing receiving space for the sealing strip is formed. The explosion-proof power supply bus according to any one of paragraphs 1 to 6. 5, U-shaped curved member (5) and duct part (1,1
4. The explosion-proof power supply bus according to claim 4, wherein a space f<19.20) is provided between the ends of the terminals. 6. Explosion-proofing according to claim 4 or 5, in which rounded portions (34, 35) are provided at the vertical corners of the duct portion (1, 1') and the U-shaped curved member (5). Power supply bus. Z duct part ← 1, 1') and the radius (R1, R2) of the rounded part (34, 35) of the curved member (5) have different center points (M11M2), and the U-shaped curved member (
6. The explosion-proof power supply bus according to claim 6, wherein the center point (M2) of the radius of the curved υ portion (34) of 5) is located deeper inside the enclosed space. 8. Claim in which the U-shaped curved member (5) is connected to the two ends of the duct part (1, 1') adjoining each other via an articulating connecting element (28, 32) Explosion-proof power supply busbar as described in item 1. 9 U-shaped curved members (5) in each case as connecting elements
locking elements (32) arranged on both sides of the duct section (1°1');
9. The explosion-proof power supply bus bar according to claim 8, wherein the explosion-proof power supply bus bar is configured to engage in a shape-restrictive manner at the rear of the edge of the bus bar. 10. Explosion-proof power supply busbar according to claim 9, in which the locking element (32) consists of two arms of a two-reading locking element, which is pivoted in its center to the U-shaped curved member (5). . 11.2 A force 9-(27) having a diameter larger than the diameter of the spacer is provided on the shaft portion (51) of the reading lock element, and the nuclear force 2
11. The explosion-proof power supply bus bar according to claim 10, wherein - is inserted into one of the openings (41) of the sealing band (18). 12. On the collar (27), there are joint plates (25) extending on both sides.
), the joint plate is provided with holes (26) located on both sides of the collar (27), and the duct portion (
12. The explosion-proof power supply busbar according to claim 11, wherein a bolt-shaped stopper member (20) fixedly connected to the ends of the terminals 1, 1') is inserted with play. 16. Explosion-proofing according to claim 12, wherein the bolt-shaped stopper member (20) is formed as a spacer between the U-shaped curved member (5) and the duct portion (1, 1'). Power supply bus. 14. The free end of the U-shaped bend (5) engages in a form-locking manner with the continuous or tubular seal base (15° 15') sealing the longitudinal slit (2) of the duct part (1, 1'). An explosion-proof power supply bus according to any one of claims 1 to 16, wherein the explosion-proof power supply busbar is adapted to match. 15. Explosion-proof power supply busbar according to claim 14, in which the ridge seal base (15, 15') is held positively in the groove of the duct part (1, 1'). 16. The groove is multi-shaped in the angularly bent retaining plate (14, 17) which is fixedly connected to the duct part (1, 1') in the region of the longitudinal slit (2). Explosion-proof power supply bus according to item 15. 11 When the upper surface (16a) of the holding ff1 (14) forms the inner complex for the current extraction stand s, (b s ) wf
Claim 16. Prevention of bookkeeping. 18. The duct part (i, i't or symmetrically with respect to the common vertical concentric circumference (10)) is made from the two halves i + (la, lb) L-shaped, and the 2 The segment has a U-shape ii extending inward; a rail-shaped part @' (12
) The range of Bamboo meter S'Ff water bound and held by