EP2742566A1

EP2742566A1 - Contact conductor rail with accommodating pockets for busbars

Info

Publication number: EP2742566A1
Application number: EP12741350.8A
Authority: EP
Inventors: Thomas Lindenau; Wolfgang Krebs
Original assignee: Demag Cranes and Components GmbH
Current assignee: Konecranes Global Oy
Priority date: 2011-08-08
Filing date: 2012-08-01
Publication date: 2014-06-18
Anticipated expiration: 2032-08-01
Also published as: EP2742566B1; DE102011052482A1; CN103828142B; WO2013020878A1; CN103828142A; CN202685991U; ES2717456T3; BR112014002786A2; BR112014002786B1

Abstract

The invention relates to a contact conductor rail (7) with a contact conductor profile (1) having a c-shaped cross section, in which at least one busbar (2, 3, 4) is arranged in in each case one accommodating pocket (6), wherein the accommodating pocket (6) comprises a c-shaped cross section with a pocket opening (6a) and a web (6f) opposite the pocket opening (6a). In order to provide an improved contact conductor rail (7), the invention proposes arranging a groove (6g) in the web (6f), wherein a base side (6l) of the groove (6g) is opposite the pocket opening (6a) and is concavely curved when seen from an interior (1a) of the contact conductor profile (1).

Description

Conductor rail with receiving pockets for busbars

The invention relates to a conductor rail with a c-shaped

Cross-section having conductor rail profile, in which at least one bus bar is arranged in each case a receiving pocket, wherein the receiving pocket comprises a c-shaped cross-section with a pocket opening and a pocket opening opposite the web.

From the German Utility Model DE 20 2007 008 171 111 a flat rail-like conductor rail profile made of plastic is known in which run a plurality of mutually parallel busbars. To an electric

To supply consumers with electrical energy or with control signals, is at a front of the conductor rail profile

Trolley with sliding contacts along the busbars movable. To accommodate the busbars in the conductor rail profile are in the

Front elongated and arranged in the longitudinal direction of the conductor rail profile receiving pockets. In each of the receiving pockets is one each

Busbar inserted and fixed in this way to the conductor rail profile. The receiving pockets have a c-shaped cross-section with a gap-shaped pocket opening which is open to the front of the conductor rail profile. Through the pocket opening of the respective sliding contact is in contact with the corresponding busbar. The cross section of each busbar is in

Essentially formed T-shaped, wherein the cross bar has centrally on the sliding contact side facing a extending in the longitudinal direction of the busbar wedge-shaped groove. Starting from the T-shape of the vertical web is formed very short, so that the busbar cross-section can also be described as rectangular with formed on the back relative to the sliding contact square recesses in the opposite corners. The receiving pockets are designed to be complementary to the conductor rails in order to receive them in a form-fitting manner. In the area of the rear of the busbars, the busbar does not completely fill the receiving pocket, as the

Receiving pocket in the middle and opposite to the groove in the busbar has an elongated groove. Furthermore, from German Patent DE 198 07 792 C2 another Conductor rail profile made of plastic with busbars known. This

Conductor rail profile is not flat, but has a c-shaped cross section, which is open at the bottom. Here is then in an interior of the conductor rail profile of the pantograph carriage with the sliding contacts movable. For mounting the busbars, seven receiving pockets are provided in the interior of the conductor rail profile, which are distributed over the circumference of the inner space, arranged parallel to one another and spaced from each other. The receiving pockets are seen in cross-section C-shaped. In this case, each receiving pocket with a slot-shaped pocket opening points in the direction of the interior. The busbars have rectangular cross-sections which are narrower than the width of the

Receiving pockets. To prevent slippage of the busbars in the receiving pockets, the busbars are additionally clamped. The cross-section of the receiving pockets is substantially rectangular in accordance with the busbar, wherein, however, one of the pocket opening opposite web is arcuately curved and seen from the interior of concave. Between the back of the busbar and the web of the receiving pocket thus remains a gap which is circular segment-shaped.

From the German patent application DE 101 59 401 A1 a profile for receiving busbars is known to the stationary consumer can be connected. Each bus bar is arranged in a receiving pocket, each one

Pocket opening and two in one of the pocket opening opposite web provided grooves with rectilinear bases. The bus bar completely fills the receiving pocket.

The invention has for its object to provide an improved conductor rail.

This object is achieved by a conductor rail with the features of claim 1. In the dependent claims 2 to 5 advantageous embodiments of the invention are given.

A conductor rail with a c-shaped cross section having a conductor rail profile in which at least one bus bar in each one

Receiving pocket is arranged, wherein the receiving pocket is a C-shaped Cross-section with a pocket opening and one of the pocket opening

is improved, characterized in that in the web a groove is arranged, wherein a base side of the groove of the pocket opening

opposite and is concave curved seen from an interior of the conductor rail profile. As a result, a conductor rail with correspondingly uniform receiving pockets receive different busbars with differently shaped cross-sections, in particular without the receiving pockets in terms of varying shapes or sizes

To adapt busbar sections. In other words, for example, both busbars with a rectangular and T-shaped cross-section can be received by a correspondingly shaped receiving pocket. In addition, it is prevented by the groove that, for example, a thin busbar with a small rectangular cross-section of the sliding contacts of the pantograph carriage is pushed so far into the receiving pocket that this may need different, especially different depth, sliding contacts must be used to provide the necessary contact pressure and to ensure the associated contact security. Instead, corresponding busbars with rectangular cross section are in the range of

Track edges and are based on it, so that the contacted by the sliding contacts of the pantograph carriage contact surfaces of the busbars, which face the pocket opening, are pre-displaced in the direction of the pocket opening. Thus sliding contacts with a uniform depth can be used. In addition, from the same receiving pocket due to the intended groove and large cross-sections are taken with a T-shaped cross-sectional profile, in which case the web of the busbar is received by the groove and thereby the receiving space away from the pocket opening is increased. As a result, the cross-sectional increase of the busbar does not extend in the direction of the interior of the conductor rail profile or out of the receiving space out into the pocket opening. This is advantageous, since otherwise compliance with the necessary creepage distances creepage distances between two adjacent receiving pockets would not always be kept safe. Furthermore, a concavely curved base side is advantageous for a simple and smooth insertion of the busbar into the corresponding receiving pocket, in particular in the case of

longitudinal insertion or retraction in slightly curved

Conductor rails or conductor rail profiles. If, for example, due to a high required current carrying capacity, large busbar cross-sections must be used, the receiving space of the receiving pocket which is enlarged by the groove is utilized particularly advantageously in that a busbar inserted into the receiving pocket at least partially fills the groove.

A further improvement of the current carrying capacity provides that a busbar inserted into the receiving pocket is supported on a base side of the groove.

The introduction of the rail into the receiving pocket is additionally facilitated by the fact that the web consists of the groove and adjoining first and a second web edges and the web edges are concavely curved. In addition, the edge edges advantageously serve to support thin ones

Busbars with small, in particular rectangular cross-sections, which do not fill the entire receiving space.

It is structurally particularly advantageous that the length ratio of a first width of the groove to a second width of the web is greater than Vi, preferably greater than%. As a result, busbars with a T-shaped cross-section are still very similar to a rectangular cross-section, so that the outlay for the production of correspondingly profiled busbars, in particular for the formation of the recesses in the opposite corners on the web of the receiving pocket facing back of the busbar, in an advantageous Way is reduced. Also, a high cross-sectional enlargement is achieved in a simple manner.

An embodiment of the invention will be explained in more detail with reference to the following description. Show it:

1 shows a view of a conductor rail in cross section,

FIG. 2 shows an enlarged view of a receiving pocket of a conductor rail profile of the conductor rail according to FIG. 1,

3 shows a receiving pocket according to FIG. 2 with a first busbar, FIG. 4 shows a receiving pocket according to FIG. 2 with a second busbar, and FIG. 5 shows a receiving pocket according to FIG. 2 with a third busbar.

FIG. 1 shows a view of a conductor rail 7 in cross section. The conductor rail 7 essentially consists of a conductor rail profile 1 and busbars 2, 3 and 4 received therefrom. The conductor rail profile 1 extends at right angles along a plane relative to the cross-sectional plane

Longitudinal direction L and is formed in cross-section C-shaped, whereby an inner space 1 a is limited. In the interior 1 a is a not shown

Trolley with sliding contacts movable. So the

Trolley trolley can supply a consumer, also not shown with electrical energy or with control signals are in the conductor rail profile 1 parallel to each other, the first, second, and third

Busbar 2, 3, 4 arranged. Over an extending in the longitudinal direction L slot-shaped profile opening 1 b of the conductor rail profile 1 is of the

Trolley carriage made an electrical connection between the busbars 2 to 4 and the electrical load. The profile opening 1 b is bounded by two profile arms 1 c, 1 d, the direction away from the profile opening 1 b horizontally outward and on which the pantograph carriage in the interior 1 a moves. To the profile arms 1 c, 1 d are each followed by a lower end of a vertical profile limb 1 e, 1 f. The parallel to each other

Profile legs 1 e, 1 f are connected at their upper ends via a horizontal upper profile web 1 g with each other. To the three busbars 2 to 4 and up to four others not shown

To fix busbars on or in the conductor rail profile 1, a total of seven receiving pockets 6 are provided in the region of the interior 1 a. All receiving pockets 6 are parallel and spaced from each other in the longitudinal direction L. Here, in each lateral profile leg 1 e, 1 f three of the receiving pockets 6 are arranged one above the other and the seventh receiving pocket 6 in the upper profile web 1 g. In the figure 1 busbars 2 to 4 are shown with different cross sections for reasons of clarity.

The busbars 2 to 4 are each inserted into one of the receiving pockets 6. For this purpose, the receiving pockets 6 each have a c-shaped cross section, the delimited a receiving space 6o. In this way, the busbars 2 to 4 are held by the receiving pockets 6 and fixed to the conductor rail profile 1. Due to the C-shape of the receiving pockets 6, the busbars 2 to 4 transversely to the longitudinal direction L are held positively, in the longitudinal direction L, however, easily displaced to allow a strain compensation between the busbars 2 to 4 and the conductor rail profile 1. The displacement of the busbars 2 to 4 is limited in the longitudinal direction L only by connecting parts, each of two inserted into a receiving pocket 6 and thus in the longitudinal direction L aligned mutually aligned busbars 2 to 4 together.

The receiving pockets 6 and the receiving spaces 6o are open and accessible via in the direction of the interior 1 a pointing gap-shaped pocket openings 6a from the interior 1 a. Through the pocket openings 6a is the respective

Sliding contact of the pantograph carriage in contact with the inserted into the corresponding receiving space 6o busbar 2 to 4.

FIG. 2 shows an enlarged view of one of the receiving pockets 6 of FIG

Conductor rail profiles 1. It is clearly visible that the receiving pockets 6 each mirror-symmetrical with respect to an imaginary due to their C-shape

Longitudinal plane are formed, wherein the longitudinal center plane at the same time forms the corresponding plane of symmetry and in this case runs centrally through the pocket opening 6a. Due to the C-shape, the pocket opening 6a is narrower than the receiving space 6o. For this purpose, close to the pocket opening 6a, a first and a second arm 6b, 6c, which are perpendicular to the respective

Longitudinal plane run. The arms 6b, 6c each pass at right angles into the first and second legs 6d, 6e of the receiving pocket 6. The legs 6d, 6e extend away from the pocket opening 6a or the inner space 1a, rectilinear and parallel to one another and parallel to the respective longitudinal center plane in the direction of an outer side 1h of the conductor rail profile 1 and are connected together at the ends thereof by a web 6f. This will limit the

Recording room 6o completes.

The web 6f has a groove 6g and a first and a second web edge 6h, 6i. Here, the groove 6g is centered with respect to the longitudinal center plane of the receiving pocket 6. In addition, the groove 6g over the land edges 6h, 6i, which is each at an end remote from the longitudinal center plane of the groove 6g

connect with the legs 6d, 6e connected. The groove 6g is formed by two walls 6j, 6k and a base side 61, wherein the base side 61 is connected at its ends via the walls 6j, 6k to the web edges 6h, 6i. The walls 6j, 6k extend parallel to the legs 6d, 6e or to the longitudinal center plane, wherein the walls 6j, 6k of the longitudinal center plane are closer than the legs 6d, 6e. The web edges 6h, 6i and the base side 61 are concave as seen from the pocket opening 6a, that is, curved in the direction of the outside 1 h of the conductor rail profile 1 or from the interior 1 a thereof. Due to the fact that the walls 6j, 6k move the base side 61 back in a stepwise manner away from the pocket opening 6a, the web 6f is not curved continuously as viewed in cross-section or does not have a continuous course of curvature. However, it is also conceivable that the groove 6g only from a base side 61 with a steady

curved course, that is without angled adjoining walls 6j, 6k is formed. Likewise, the groove 6g may be formed also paragraph or stepped, in which case not only the one base side 61 and not only the first and the second wall 6j, 6k are formed, but each corresponding to several.

The respective curvatures or radii of curvature of the edge margins 6h, 6i and the base side 61, which are related to the cross section, can be constant or non-constant over their respective length, so that

arcuate, elliptical or other oval curvatures result. In principle, individual receiving pockets 6 of the conductor rail profile 1 can be formed completely free of curvature. It is also possible that, for example, only the base side 61 is curved, the web edges 6h, 6i and / or the walls 6j, 6k, however, have a linear course and vice versa. The length ratios of the set-back base side 61 of the groove 6g to the web edges 6h, 6i

or to the entire web 6f are in principle freely selectable. The same applies to the length ratios in the direction of the pocket opening 6a, in particular between the legs 6d, 6e and the walls 6j, 6k. However, it is preferred that the ratio of a first width B1 of the groove 6g to a second width B2 of the web 6f is greater than, and more preferably greater than,%.

The arms 6b, 6c, the legs 6d, 6e and the webs 6f with the web edges 6h, 6i, the walls 6j, 6k and the bases 61 each form a continuous and contiguous inside 6m of the receiving pockets 6. The inner side 6m of the receiving pocket 6 ends at the arms 6b, 6c in the region of the pocket opening 6a and passes at each of the arms 6b, 6c at right angles into an opening side 6n running parallel to the longitudinal center plane. The receiving space 6o of the receiving pocket 6 is thus in particular by the inside 6m and an imaginary, transverse to

Longitudinal plane extending and direct connection of the inner sides 6m of the arms 6b, 6c limited. The interior 1 a delimiting parts of the receiving pockets 6, in particular the arms 6 b, 6 c and some of the legs 6 d, 6 e each have a the interior 1 a facing interior side 6 p.

The inserted busbars 2 to 4 lie - if not in the entire receiving space 6o, then at least in a part of the receiving space 6o - only on the inside 6m flat and are based on it (see Figures 3 to 5). It is not provided in this sense that the busbars 2 to 4 protrude from the receiving space 6o, so do not rest in the region of the pocket opening 6a on the opening sides 6n of the arms 6b, 6c or on the interior sides 6p. This should also be relevant for possible leakage currents route between the busbars 2 to 4 of two adjacent

Receiving pockets 6 are enlarged. Since this route, for example, between the first busbar 2 and the second busbar 3 (see Figure 1) to a first part of the corresponding length of Innraumseiten 6p, in particular two legs 6d, 6e and two arms 6b, 6c (see Figure 2) and the rest of the interior 1 a delimiting parts composed, the distance to a second part at least the length of the opening sides 6n and, for example, in a cross section according to the third busbar 4 may still be increased by a partial length of the insides 6m (see Figure 5).

As already indicated in the preceding paragraph and can be seen particularly well in FIG. 1 and in FIGS. 3 to 5 described below, the busbars 2 to 4 fastened in a receiving pocket 6 can each be different

Have cross sections. As a result, the busbars 2 to 4 in the

Receiving pockets 6 transversely to the longitudinal direction L held positively.

All busbars 2 to 4 point in the direction of the pocket opening 6a or in the direction of the interior 1 a pointing and plan trained Contact sides 2a to 4a and the web 6f facing backs 2b to 4b. The contact sides 2a to 4a are formed identically in all rails. Deviating are on the contact sides 2a to 4a in the longitudinal direction L extending guide grooves or grooves for a better sliding of the sliding contacts conceivable. Differences between the busbars 2 to 4 exist only in terms of the shape of the backs 2b to 4b and in terms of the thickness of the busbars, that is, in terms of between the contact sides 2a to 4a and the corresponding backs 2b to 4b resulting measure. In addition, the busbars 2 to 4 of the respective legs 6d, 6e facing leg sides 2d, 2e to 4d, 4e, which may be of different lengths according to the aforementioned measure. In other words, in all rails 2 to 4, the leg sides 2d, 2e to 4d, 4e are flat against the associated legs 6d, 6e, but not over the entire inside 6m, depending on the thickness of the busbar 2 to 4. A positive retention of the busbars 2 to 4 is thus preferably achieved by the legs 6d, 6e and partially additionally by the cooperation of the web 6f (see FIG. 3) and / or the arms 6b, 6c (see FIGS. 3 and 4). However, it is in principle also conceivable that a corresponding positive connection between the busbars 2 to 4 and the receiving pockets 6 entirely without the action of the legs 6d, 6e and instead in the region of the groove 6g and / or the arms 6b, 6c produced.

FIG. 3 shows the first busbar 2 inserted into a receiving pocket 6. The cross section of the first busbar 2 is essentially complementary to the receiving chamber 6o, whereby the first busbar 2 forms the first busbar 2

Receiving pocket 6 or their receiving space 6o almost completely fills. In order for the first busbar 2 to be held loosely and without clamping action by the receiving pocket 6, the first busbar 2 does not rest flat over the entire inner side 6m of the receiving pocket 6.

The cross section of the first busbar 2 is thus formed substantially T-shaped with a transverse bar 2f and a web 2c. The first contact side 2a is formed by the crossbar 2f. The web 2c of the first busbar 2 has a rectangular cross-section which dips into the groove 6g and is supported at least selectively on the base side 61 of the groove 6g or on the web edges 6h, 6i of the web 6f, if the first busbar 2 of the corresponding Sliding contact of a

Pantograph carriage is pressed into the receiving pocket 6. This forms the Web 2c together with the web 6f facing the part of the crossbar 2f, the first back 2b, which is generally formed substantially complementary to the web 6f. The leg sides 2d, 2e extend almost completely over the inner side 6m of the legs 6d, 6e, the contact side 2a, however, only abutting almost on the inner side 6m of the arms 6b, 6c.

Figure 4 shows the inserted into a receiving pocket 6 second busbar 3. The second busbar 3 has a rectangular cross-section. The second back 3b is therefore not complementary to the groove 6g but flat, so that the groove 6g is not filled by the second busbar 3.

Instead, the second busbar 3 rests against the second rear side 3b in the region of the edge edges 6h, 6i and rests on them. Furthermore, the second busbar 3 fills the part of the leg lying between the legs 6d, 6e

Recording space 6o analogous to the cross bar 2f of the first busbar 2 almost completely off. The leg sides 3d, 3e of the second busbar 3 thus likewise extend only almost over the entire inner side 6m of the legs 6d, 6e, so that the second contact side 3a also bears almost only on the inner side 6m of the arms 6b, 6c. Figure 5 shows the inserted into a receiving pocket 6 third busbar 4, which also has a rectangular cross-section. However, the third busbar 4 is thinner than the second busbar 3, so that not almost the entire receiving space 6o between the legs 6d, 6e is filled. The third

Contact side 4a is thus set back in the direction of the web 6f. In this case, the third busbar 4 with its third rear side 4b is not located on the base side 61 of FIG

Receiving pocket 6 and the groove 6g, but at the edge edges 6h, 6i, so that the third contact side 4a of the third busbar 4 of

Pocket opening 6a comes as close as possible and shortens the path to be bridged by the sliding contact. This allows sliding contacts with a uniform depth to be used.

Alternatively, the backs 2b to 4b of the busbars 2 to 4 may also be formed complementary to the side edges 6h, 6i and adapted to the inside 6m thereof so that they have a curved or wedge-shaped course. With regard to a sufficient current carrying capacity, the cross section of the busbars 2 to 4 can basically be increased starting from a rectangular cross section until the receiving space 6o is completely filled in the region between the legs 6d, 6e and up to the arms 6b, 6c. Subsequently, the groove 6g provides additional space to transition from the rectangular shaped to a T-shaped busbar cross-section at a further cross-sectional enlargement. In order to ensure a sufficient current carrying capacity and at the same time to comply with the required creepage distances to safely avoid leakage currents, it is also conceivable that to maintain the greatest possible distance of the backs 2b to 4b of the busbars 2 to 4 to the pocket openings 6a first of the receiving space 6o im Area of the groove 6g is filled. Thus, the cross-sectional enlargement takes place starting from a T-shaped cross-section and only subsequently in the region between the legs 6d, 6e and towards the arms 6b, 6c or the pocket opening 6a.

As already mentioned, apart from those shown by way of example in FIG

Busbars 2 to 4 in total up to seven busbars of the

Conductor rail profile 1 can be accommodated. Here are any combinations of

Cross-sections according to the busbars 2 to 4 conceivable, for example, seven first busbars 2 or three first busbars 2 and four third busbars 4 with corresponding cross sections.

LIST OF REFERENCE NUMBERS

1 conductor rail profile

1 a interior

1 b profile opening

1 c first profile arm

1 d second profile arm

1 e first profile leg

1f second profile leg g profile web

1 h outside

2 first busbar

2a first contact page

2b first back

2c bridge

2d first leg side

2e second leg side

2f crossbeams

3 second busbar

3a second contact page

3b second back

3d first leg side

3e second leg side

4 third busbar

4a third contact page

4b third back

4d first leg side

4e second leg side

6 receiving bag

6a pocket opening

6b first arm

6c second arm

6d first leg

6e second leg

6f footbridge 6g groove

6h first footstep

6i second footbridge

6j first wall

6k second wall

61 basic page

6m inside

6n opening side

6o recording room

6p interior side

7 conductor line

B1 first width

B2 second width

L longitudinal direction

Claims

claims

1 . Rail conductor rail (7) with a C-shaped cross-section conductor rail profile (1), in which at least one bus bar (2, 3, 4) in each case a receiving pocket (6) is arranged, wherein the receiving pocket (6) has a c-shaped cross-section comprising a pocket opening (6a) and a web (6f) opposite the pocket opening (6a), characterized in that a groove (6g) is arranged in the web (6f), a base side (61) of the groove (6g) of Pocket opening (6a) opposite and from an interior (1 a) of the

Rail conductor profile (1) is seen from concave curved.

2. conductor rail (7) according to claim 1, characterized in that in the receiving pocket (6) inserted busbar (2, 3, 4), the groove (6g) at least partially fills.

3. conductor rail (7) according to claim 1 or 2, characterized in that in the receiving pocket (6) inserted busbar (2, 3, 4) on a base side (61) of the groove (6g) is supported.

4. conductor rail (7) according to one of claims 1 to 3, characterized

characterized in that the web (6f) consists of the groove (6g) and adjoining first and second web edges (6h, 6i) and the web edges (6h, 6i) are concavely curved.

5. conductor rail (7) according to one of claims 1 to 4, characterized

characterized in that the aspect ratio of a first width (B1) of the groove (6g) to a second width (B2) of the web (6f) is greater than Vi, preferably greater than%.