DE1003789B - Carbon sanding strip - Google Patents
Carbon sanding stripInfo
- Publication number
- DE1003789B DE1003789B DER8937A DER0008937A DE1003789B DE 1003789 B DE1003789 B DE 1003789B DE R8937 A DER8937 A DE R8937A DE R0008937 A DER0008937 A DE R0008937A DE 1003789 B DE1003789 B DE 1003789B
- Authority
- DE
- Germany
- Prior art keywords
- inserts
- carbon
- strip
- recess
- contact strip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims description 9
- 229910052799 carbon Inorganic materials 0.000 title claims description 9
- 238000001125 extrusion Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims 1
- 238000000137 annealing Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
- B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
- B60L5/20—Details of contact bow
- B60L5/205—Details of contact bow with carbon contact members
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Switches (AREA)
Description
Kohleschleifleiste Es ist bereits bekannt, mehrteilige Kohleschleifbügel durch in ihrem Innern verlaufende Spanndrähte in axialer Richtung zusammenzupressen. Hierdurch soll eine gewisse Durchfederung des Schleifbügels erzielt werden. Es ist weiter bekannt, die Festigkeit auch einteiliger Schleifbügel durch Spanndrähte ähnlich wie bei Spannbeton zu erhöhen.Carbon sanding strip It is already known to have multi-part carbon sanding bows to be pressed together in the axial direction by tension wires running inside. This is intended to achieve a certain deflection of the grinding hanger. It is Also known, the strength of one-piece grinding hanger by means of tension wires is similar as with prestressed concrete.
Die Erfindung betrifft eine besonders zweckmäßige Ausbildung einer für so verspannte ein- oder mehrteilige Schleifbügel verwendbaren Kohleschleifleiste. Solche Schleifleisten werden üblicherweise im Strangpreßverfahren hergestellt. Es ist schwierig, das verhältnismäßig große Profil einer solchen Schleifleiste mit denjenigen dünnen Löchern zu versehen, die für die Spanndrähte benötigt werden; denn die zugehörigen dünnen Kerne, die dafür in das Strangpressenmundstück eingelegt werden müßten, verlagern sich zu leicht.The invention relates to a particularly useful embodiment of a carbon sanding strip that can be used for one-part or multi-part sanding bows tensioned in this way. Such contact strips are usually produced by extrusion. It is difficult to use the relatively large profile of such a grinding strip to provide those thin holes that are required for the tension wires; because the associated thin cores that are inserted into the extrusion die for this purpose shift too easily.
Die Kohleschleifleiste mit Innenspannung besteht nach der Erfindung aus einer im Preßverfahren, vorzugsweise im Strangpreßverfahren, hergestellten und mit einer Aussparung versehenen Leiste und aus einem oder mehreren Einsatzstücken, die in die Aussparung passen, und es sind Bohrungen zur Aufnahme der Spanndrähte in den Einsatzstücken vorgesehen. Der hierfür im Strangpressenmundstück erforderliche Kern ist so groß, daß er leicht gegen Verlagerung gesichert werden kann.The carbon contact strip with internal tension is made according to the invention from one in the compression process, preferably in the extrusion process, produced and with a recess and one or more insert pieces, which fit into the recess, and there are holes to accommodate the tension wires provided in the inserts. The one required for this in the extrusion die The core is so large that it can easily be secured against displacement.
Die Einsätze (Stäbe) haben zweckmäßig einen runden oder quadratischen Querschnitt mit abgerundeten Kanten. Die Aussparungen in der Schleifleiste sind der Form der Einsätze angepaßt, also beispielsweise rechteckig mit abgerundeten Kanten.The inserts (rods) suitably have a round or square one Cross-section with rounded edges. The recesses in the contact strip are adapted to the shape of the inserts, for example rectangular with rounded ones Edge.
In diese rechteckige oder runde Aussparung werden nun die quadratischen oder runden Einsätze mit den notwendigen engen Bohrungen für die Spanndrähte eingeschoben. Diese Einsätze können gleichfalls aus Kohle hergestellt werden. Ihre Herstellung ist einfach, weil der Querschnitt der Bohrung zum Stal)querschnitt in einem günstigeren Verhältnis steht als zum Querschnitt der ganzen Schleifleiste. Man kann die Einsätze sowohl ungeglüht als auch geglüht in die noch ungeglühte Leiste einschieben. Die ungeglühten Einsätze können beim Glühen mit der Leiste verschmelzen, die geglühten werden infolge des Schwundes der Schleifleiste beim Glühen festgeschrumpft.In this rectangular or round recess are now the square or round inserts with the necessary narrow holes for the tension wires inserted. These inserts can also be made from coal. Your manufacture is simple because the cross-section of the bore to the stal) cross-section in a cheaper The relationship is as to the cross-section of the entire contact strip. You can do the stakes Slide both unannealed and annealed into the bar that has not yet been annealed. the Unannealed inserts can fuse with the strip during the glowing process are shrunk as a result of the shrinkage of the contact strip during annealing.
Den Querschnitt einer Schleifleiste nach der Erfindung zeigt als Beispiel die Zeichnung. Darin ist 1 die Schleifleiste mit der rechteckigen Aussparung 2. In dieser sitzen vier Einsätze 3 mit je einer Bohrung 4 für die Spanndrähte.The cross section of a contact strip according to the invention shows as an example the drawing. In it 1 is the contact strip with the rectangular recess 2. In this sit four inserts 3, each with a hole 4 for the tension wires.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER8937A DE1003789B (en) | 1952-04-29 | 1952-04-29 | Carbon sanding strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER8937A DE1003789B (en) | 1952-04-29 | 1952-04-29 | Carbon sanding strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1003789B true DE1003789B (en) | 1957-03-07 |
Family
ID=7398004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DER8937A Pending DE1003789B (en) | 1952-04-29 | 1952-04-29 | Carbon sanding strip |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1003789B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983001419A1 (en) * | 1981-10-22 | 1983-04-28 | Ferguson, Ian, Campbell | Electric traction current-collector |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE870128C (en) * | 1950-08-17 | 1953-03-09 | Deutsche Bundesbahn | Carbon grinding piece with increased flexural strength for pantographs on electric rail vehicles |
-
1952
- 1952-04-29 DE DER8937A patent/DE1003789B/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE870128C (en) * | 1950-08-17 | 1953-03-09 | Deutsche Bundesbahn | Carbon grinding piece with increased flexural strength for pantographs on electric rail vehicles |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983001419A1 (en) * | 1981-10-22 | 1983-04-28 | Ferguson, Ian, Campbell | Electric traction current-collector |
| EP0078159A1 (en) * | 1981-10-22 | 1983-05-04 | Morganite Electrical Carbon Limited | Electric traction current-collector |
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