EP0594057B1 - Parallel guiding device of a brake shoe - Google Patents
Parallel guiding device of a brake shoe Download PDFInfo
- Publication number
- EP0594057B1 EP0594057B1 EP93116624A EP93116624A EP0594057B1 EP 0594057 B1 EP0594057 B1 EP 0594057B1 EP 93116624 A EP93116624 A EP 93116624A EP 93116624 A EP93116624 A EP 93116624A EP 0594057 B1 EP0594057 B1 EP 0594057B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- parallel
- brake
- parallel rod
- friction element
- sleeve
- 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.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H1/00—Applications or arrangements of brakes with a braking member or members co-operating with the periphery of the wheel rim, a drum, or the like
- B61H1/003—Applications or arrangements of brakes with a braking member or members co-operating with the periphery of the wheel rim, a drum, or the like with an actuator directly acting on a brake head
Definitions
- the present invention relates to a device for parallel guiding of the brake shoe of a vehicle brake, which is particularly suitable for rail vehicles, with a hanging tab with one end of the vehicle frame and the other end is rotatably attached to the brake shoe of the brake block so that the braking forces be transferred to the vehicle frame by means of this hanging bracket.
- this friction element is suitable for one-piece brake pads on the brake shoe to ensure satisfactory guidance of the brake pad, it is not able to with two-piece Brake pads, which enclose a larger circular arc on the impeller, to ensure exact parallel guidance at all points of the impeller. In extreme cases it can happen that the tip of the brake pad actually still touches the tread of the wheel to be braked when the brake is released, while the rest of the brake pad has already reached a sufficient distance from the tread of the wheel. This results in unwanted uneven wear profiles of the brake pads. Furthermore, it is felt to be disadvantageous in the known construction of the brake pad brake that when the friction elements between the shoe and the spindle are in place an additional bending load on the spindle occurs, which at least promotes the wear of the spindle.
- the device for parallel guidance of the brake shoe of a brake shoe brake of a vehicle in particular a rail vehicle with a hanging bracket, which is rotatably fastened at one end to the vehicle frame and at the other end rotatably attached to the braking shoe, is characterized by an additional parallel link which is arranged parallel to the hanging bracket is so that its pivot points together with the pivot points of the hanging bracket describe a geometric figure in which at least two opposite sides are parallel, and the other two ends of the parallel link are coupled via a friction element.
- the parallel link is particularly advantageous to fasten the parallel link with its one end rotatably to the vehicle frame and with its other end to the brake shoe so that the longitudinal axis of the parallel link is arranged parallel to the longitudinal axis of the hanging bracket. It is also advantageous that the parallel link is approximately as long as the hanging bracket and the distance between the two longitudinal axes is not chosen too large.
- the friction element according to the invention is accommodated in the sleeve of the parallel link and is embedded in a dustproof manner by a cover part in the sleeve.
- the friction element can consist of a tensioning sleeve or a wrap spring which, according to the invention, frictionally fits around the shaft of a bolt projecting into the sleeve.
- the frictional force exerted by the friction element on the bolt is only overcome according to the invention if the position of the brake shoe moves due to a vertical or horizontal axis movement of the impeller when the brake is braked. This also changes the length of the parallel link and thus ensures that the entire brake pad runs parallel when the brake is released.
- a block brake is shown schematically with its essential parts.
- the entire drive mechanism, which mechanically operates the brake pad unit, is located in the housing 1.
- a ball head 6 which transmits the force of the actuating mechanism 1 to the brake shoe 2.
- the ball head 6 is seated in a bearing shell which, due to a special mechanism in the ball head, allows only two degrees of freedom of movement of the brake pad, which are necessary when braking.
- the housing 1 is firmly connected to the vehicle frame 4.
- On the brake shoe 2 are the brake pads 2 ', which are formed in two parts in the present case.
- a hanging bracket 3 connects the vehicle frame 4 to the brake shoe 2, wherein the upper end of the hanging bracket 3 is rotatably connected to the vehicle frame 4 on a bolt 14 and the lower end of the hanging bracket 3 is rotatably connected to the brake shoe 2 on a bolt 15.
- the hanging bracket 3 transmits the braking force from the brake pad 2 to the chassis 4.
- the parallel link 5 according to the invention is arranged in the immediate vicinity of the hanging bracket so that the central axis of the parallel link 5 is arranged parallel to the central axis of the hanging bracket 3.
- the parallel link 5 according to the invention consists in principle of two parts which are arranged displaceably against one another.
- the upper part 10 is rotatably connected to the vehicle frame 4, while the lower part 15 of the parallel link 5 is rotatably connected to the brake shoe 2.
- the upper part 10 of the parallel link 5 has a bore at the upper end into which the retaining bolt engages.
- the lower part of this part 10 is designed in a sense as a sleeve. In this lower part there is a bore 9 into which the bolt shaft 8 of the second part 15 of the parallel link 5 projects.
- Friction element made of a wrap spring 7, which fits frictionally around the bolt 8.
- This wrap spring 7 can also be replaced by another friction element such as an adapter sleeve.
- the friction element 7 is secured dust-tight against displacement by a cover 11.
- the cover element 11 has a threaded pin 20, the thread of which engages in the internal thread 13 of the sleeve 10.
- a sealing ring 12 is provided in the cover part 11.
- the operation of the device according to the invention is as follows.
- This movement is effected by the parallel link 5 according to the invention, because the brake shoe 2 is guided by the parallel guidance of the suspension bracket 3 on the one hand and by the parallel link 5 on the other hand at a certain height during a horizontal movement of the brake block. This is of particular importance when releasing the brake, since otherwise a tip of the brake block 2 'could still touch the tread of the wheel after releasing the brake, so that uniform wear of the lining 2' would not be guaranteed if the brake was not parallel.
- the parallel link 5 ensures parallel guidance when releasing the brake at any possible height of the brake shoe 2.
- the adjustment of the brake shoe 2 relative to the tread of the vehicle wheel takes place during the Brake pads 2 'are pressed against the tread of the vehicle wheel.
- the frictional forces between the friction element for example a clamping ring and the friction surface of the bolt 8
- This new position of the parallel link is held by the said frictional forces until a new adjustment has occurred either by braking or by shifting the axle position of the vehicle wheel. This always results in a uniform lifting of the brake pad from the tread of the vehicle wheel.
- FIG. 1 A further exemplary embodiment of a parallel link 5 according to the invention is shown in FIG.
- This parallel link 5 also consists of an upper 23 and a lower 24 part, which can be moved against each other when the prevailing frictional forces are overcome.
- a new length of the parallel link 5 is also set here.
- Two friction surfaces 17, 18 of the upper part 23 and of the lower part 22 are pressed together with two clamping screws 19. Between the two friction surfaces 17, 18 there is a friction lining 20, which has a different thickness depending on the abrasion.
- the clamping screws 19 are pre-tensioned by suitable disc springs 21, so that an approximately uniform pressure always acts on the friction surfaces of the friction elements.
- the lower part 22 of the parallel link 5 has two threaded bores 25 into which the thread of the tensioning screws 19 engages.
- the upper part 23 of the parallel link 5 has two elongated holes 24, within the limits of which the two parts 22 and 23 can move against each other.
- this embodiment also represents a suitable means for parallel guidance of the brake shoe 2.
- the present invention presents a device which allows the brake pad of a vehicle brake to be lifted evenly from the braking surface of the vehicle wheel to be braked, particularly when the brake is released. This ensures uniform wear of the brake pads (2 ').
- the parallel guidance of the brake shoe (2) is caused by a parallel link (5) according to the invention, the length of which, after overcoming a certain frictional force, is set continuously depending on the position of the vehicle wheel and is held in this position until a new adjustment is made.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Die vorliegende Erfindung befaßt sich mit einer Vorrichtung zur Parallelführung des Bremsklotzschuhs einer Klotzbremse eines Fahrzeugs, die insbesondere für Schienenfahrzeuge geeignet ist, wobei eine Hängelasche mit ihrem einen Ende am Fahrzeugrahmen und mit ihrem anderen Ende am Bremsklotzschuh des Bremsklotzes drehbar befestigt ist, so daß die Bremskräfte mittels dieser Hängelasche auf den Fahrzeugrahmen übertragen werden.The present invention relates to a device for parallel guiding of the brake shoe of a vehicle brake, which is particularly suitable for rail vehicles, with a hanging tab with one end of the vehicle frame and the other end is rotatably attached to the brake shoe of the brake block so that the braking forces be transferred to the vehicle frame by means of this hanging bracket.
Derartige Vorrichtungen für Klotzbremsen sind aus den Druckschriften EP 84 111 619.7 und EP 79 200 634.8 bekannt. Gemäß der EP 84 111 619.7 handelt es sich hierbei um eine Klotzbremse mit einem Bremsklotzsteller, der durch Reibschluß zwischen zwei Reibklötzen den Bremsklotzschuh in einer bestimmten Drehlage um eine Drehachse hält, wobei die Reibflächen derart als Keilflächen ausgebildet sind, daß bei Drehung des Bremsklotzschuhes unter dem Einfluß der Schwerkraft die Reibklötze entgegen einer Federbelastung durch die Reibflächen zurückgedrückt werden. Das Reibelement befindet sich also in der Hängelasche, die den Bremsklotzschuh und das Fahrgestell kraftschlüssig miteinander verbinden. Dieses Reibelement ist zwar für einteilige Bremsklötze am Bremsklotzschuh geeignet, eine befriedigende Führung des Bremsklotzes zu gewährleisten, sie ist jedoch nicht in der Lage, bei zweiteiligen Bremsklötzen, die einen größeren Kreisbogen am Laufrad umfassen, eine exakte parallele Führung an allen Punkten des Laufrades zu gewährleisten. Im Extremfall kann es vorkommen, daß die Spitze des Bremsklotzes bei gelöster Bremse tatsächlich noch die Lauffläche des abzubremsenden Rades berührt, während der Rest des Bremsklotzes bereits einen genügenden Abstand von der Lauffläche des Rades erreicht hat. Dadurch ergeben sich unerwünschte ungleichmäßige Abnutzungsprofile der Bremsklötze. Ferner wird als nachteilig bei der bekannten Konstruktion der Bremsklotzbremse empfunden, daß bei Stellung der Reibeleoente zwischen Schuh und Spindel eine zusätzliche Biegebelastung der Spindel auftritt, die zumindest den Verschleiß der Spindel fördert.Such devices for block brakes are known from the publications EP 84 111 619.7 and EP 79 200 634.8. According to EP 84 111 619.7, this is a block brake with a brake pad actuator, which holds the brake block shoe in a certain rotational position about an axis of rotation by friction between two friction blocks, the friction surfaces being designed as wedge surfaces such that when the brake block shoe rotates under the Influence of gravity, the friction pads are pressed back against the spring load by the friction surfaces. The friction element is therefore in the hanging bracket, which frictionally connect the brake shoe and the chassis. Although this friction element is suitable for one-piece brake pads on the brake shoe to ensure satisfactory guidance of the brake pad, it is not able to with two-piece Brake pads, which enclose a larger circular arc on the impeller, to ensure exact parallel guidance at all points of the impeller. In extreme cases it can happen that the tip of the brake pad actually still touches the tread of the wheel to be braked when the brake is released, while the rest of the brake pad has already reached a sufficient distance from the tread of the wheel. This results in unwanted uneven wear profiles of the brake pads. Furthermore, it is felt to be disadvantageous in the known construction of the brake pad brake that when the friction elements between the shoe and the spindle are in place an additional bending load on the spindle occurs, which at least promotes the wear of the spindle.
Daher ist es Aufgabe der vorliegenden Erfindung, eine einfache und kostengünstige Konstruktion anzugeben, die eine Parallelführung des Bremsklotzschuhs einer Klotzbremse auch bei unterschiedlichen relativen Radstellungen zum Fahrzeugrahmen gewährleistet.It is therefore an object of the present invention to provide a simple and inexpensive construction which ensures that the brake shoe of a block brake is guided in parallel, even with different relative wheel positions to the vehicle frame.
Diese Aufgabe wird erfindungsgemäß durch die im Kennzeichen des Hauptanspruchs befindlichen Merkmale gelöst.This object is achieved according to the invention by the features in the characterizing part of the main claim.
Demnach ist die Vorrichtung zur Parallelführung des Bremsklotzschuhs einer Bremsklotzbremse eines Fahrzeugs, insbesondere eines Schienenfahrzeugs mit einer Hängelasche, die mit Ihrem einen Ende drehbar am Fahrzeugsrahmen und mit ihrem anderen Ende drehbar am Bremsklotzschuh befestigt ist, gekennzeichnet durch einen zusätzlichen Parallellenker, der parallel zur Hängelasche angeordnet ist, so daß dessen Drehpunkte zusammen mit den Drehpunkten der Hängelasche eine geometrische Figur beschreiben, bei der mindestens zwei gegenüberliegende Seiten parallel liegen, und die beiden anderen Enden des Parallellenkers über ein Reibelement gekoppelt sind.Accordingly, the device for parallel guidance of the brake shoe of a brake shoe brake of a vehicle, in particular a rail vehicle with a hanging bracket, which is rotatably fastened at one end to the vehicle frame and at the other end rotatably attached to the braking shoe, is characterized by an additional parallel link which is arranged parallel to the hanging bracket is so that its pivot points together with the pivot points of the hanging bracket describe a geometric figure in which at least two opposite sides are parallel, and the other two ends of the parallel link are coupled via a friction element.
Vorteilhafte Ausführungsformen der vorliegenden Erfindung sind den Unteransprüchen zu entnehmen.Advantageous embodiments of the present invention can be found in the subclaims.
Demnach ist es besonders vorteilhaft, den Parallellenker mit seinem einen Ende drehbar am Fahrzeugrahmen und mit seinen anderen Ende drehbar am Bremsklotzschuh so zu befestigen, daß die Längsachse des Parallellenkers parallel zur Längsachse der Hängelasche angeordnet ist. Vorteilhaft ist auch, daß der Parallellenker annähernd so lang ist wie die Hängelasche und der Abstand der beiden Längsachsen nicht zu groß gewählt wird.Accordingly, it is particularly advantageous to fasten the parallel link with its one end rotatably to the vehicle frame and with its other end to the brake shoe so that the longitudinal axis of the parallel link is arranged parallel to the longitudinal axis of the hanging bracket. It is also advantageous that the parallel link is approximately as long as the hanging bracket and the distance between the two longitudinal axes is not chosen too large.
Vorteilhaft wirkt sich auch aus, daß das erfindungsgemäße Reibelement in der Hülse des Parallellenkers untergebracht ist und staubdicht von einem Abdeckteil in der Hülse eingebettet ist. In besonders vorteilhafter Weise kann das Reibelement aus einer Spannhülse oder einer Schlingfeder bestehen, die sich erfindungsgemäß um den Schaft eines in die Hülse hineinragenden Bolzens reibschlüssig herumlegen.It is also advantageous that the friction element according to the invention is accommodated in the sleeve of the parallel link and is embedded in a dustproof manner by a cover part in the sleeve. In a particularly advantageous manner, the friction element can consist of a tensioning sleeve or a wrap spring which, according to the invention, frictionally fits around the shaft of a bolt projecting into the sleeve.
Die von dem Reibelement auf den Bolzen ausgeübte Reibkraft wird erfindungsgemäß nur überwunden, wenn sich die Lage des Bremsklotzschuhs infolge einer vertikalen oder horizontalen Achsbewegung des Laufrades bei eingebremster Bremse verschiebt. Dadurch wird auch die Länge des Parallellenkers verändert und gewährleistet somit bei veränderter Länge eine Parallelführung des gesamten Bremsklotzes beim Lösen der Bremse.The frictional force exerted by the friction element on the bolt is only overcome according to the invention if the position of the brake shoe moves due to a vertical or horizontal axis movement of the impeller when the brake is braked. This also changes the length of the parallel link and thus ensures that the entire brake pad runs parallel when the brake is released.
Weitere vorteilhafte Ausgestaltungen der vorliegenden Erfindung sind den Unteransprüchen zu entnehmen.Further advantageous embodiments of the present invention can be found in the subclaims.
Im nun Folgenden wird anhand von Zeichnungen die vorliegende Erfindung im einzelnen beschrieben. Es zeigt
- Fig.1
- eine schematische Darstellung einer Klotzbremse mit dem erfindungsgemäßen Parallellenker (5);
- Fig.2
- ein weiteres erfindungsgemäßes Ausführungsbeispiel eines Parallellenkers (5).
- Fig. 1
- a schematic representation of a block brake with the parallel link according to the invention (5);
- Fig. 2
- another according to the invention Embodiment of a parallel link (5).
In Fig. 1 ist schematisch eine Klotzbremse mit ihren wesentlichen Teilen dargestellt. In dem Gehäuse 1 befindet sich der gesamte Antriebsmechanismus, der die Bremsklotzeinheit mechanisch betreibt. Auf einem nicht weiter dargestellten Nachstellmechanismus befindet sich am Ende ein Kugelkopf 6, der die Kraft des Stellmechanismus 1 auf den Bremsklotzschuh 2 überträgt. Der Kugelkopf 6 sitzt in einer Lagerschale, die infolge eines speziellen Mechanismus im Kugelkopf nur zwei Freiheitsgrade der Bewegung des Bremsklotzes erlaubt, die beim Einbremsen notwendig sind. Das Gehäuse 1 ist fest mit dem Fahrzeugrahmen 4 verbunden. Auf dem Bremsklotzschuh 2 befinden sich die Bremsklötze 2', die im vorliegenden Falle zweiteilig ausgebildet sind. Eine Hängelasche 3 verbindet den Fahrzeugrahmen 4 mit dem Bremsklotzschuh 2, wobei das obere Ende der Hängelasche 3 drehbar auf einem Bolzen 14 mit dem Fahrzeugrahmen 4 verbunden ist und das untere Ende der Hängelasche 3 auf einem Bolzen 15 drehbar mit dem Bremsklotzschuh 2 verbunden ist. Die Hängelasche 3 überträgt die Bremskraft vom Bremsklotz 2 auf das Fahrgestell 4.In Fig. 1, a block brake is shown schematically with its essential parts. The entire drive mechanism, which mechanically operates the brake pad unit, is located in the housing 1. At the end of a readjustment mechanism, not shown, there is a
In unmittelbarer Nähe der Hängelasche ist der erfindungsgemäße Parallellenker 5 so angeordnet, daß die Mittelachse des Parallellenkers 5 parallel mit der Mittelachse der Hängelasche 3 angeordnet ist. Der erfindungsgemäße Parallellenker 5 besteht im Prinzip aus zwei Teilen, die gegeneinander verschieblich angeordnet sind. Das obere Teil 10 ist mit den Fahrzeugrahmen 4 drehbar verbunden, während das untere Teil 15 des Parallellenkers 5 drehbar mit dem Bremsklotzschuh 2 verbunden ist. Das obere Teil 10 des Parallellenkers 5 weist am oberen Ende eine Bohrung auf, in die der Haltebolzen eingreift. Der untere Teil dieses Teils 10 ist in gewissem Sinne als Hülse ausgebildet. In diesem unteren Teil befindet sich eine Bohrung 9, in die der Bolzenschaft 8 des zweiten Teils 15 des Parallellenkers 5 hineinragt. Die Bohrung ist am Ende aufgeweitet, so daß sie Platz für ein erfindungsgemäßes Reibelement bietet. Im hier dargestellten Ausführungsbeispiel besteht das Reibelement aus einer Schlingfeder 7, die sich reibschlüssig um den Bolzen 8 legt. Diese Schlingfeder 7 kann auch durch ein anderes Reibelement wie beispielsweise einer Spannhülse ersetzt werden. Das Reibelement 7 ist durch eine Abdeckung 11 staubdicht gegen Verschiebung gesichert. Das Abdeckelement 11 weist einen Gewindezapfen 20 auf, dessen Gewinde in das Innengewinde 13 der Hülse 10 eingreift. Zum Dichten des Innenraumes in dem sich das Reibelement 7 befindet, ist ein Dichtring 12 in dem Abdeckteil 11 vorgesehen.The
Die Wirkungsweise der erfindungsgemäßen Vorrichtung ist wie folgt. Der Kugelkopf 6, der am Ende einer Kolbenstange 16 mit Hilfe des nicht weiter dargelegten Stellmechanismus zum Einbremsen nach rechts bewegt wird, überträgt seine Stellkraft auf den Bremsklotzschuh 2, so daß sich dieser horizontal in Richtung der Lauffläche des nicht gezeigten Rades bewegt. Durch die Hängelasche 3 und den Parallellenker 5, die beide parallel zueinander mit dem Bremsklotzschuh 2 drehbar verbunden sind, führt der Bremsklotz 2 an allen Punkten der Bremsklötze 2' eine gleiche Bewegung aus.The operation of the device according to the invention is as follows. The
Diese Bewegung wird durch den erfindungsgemäßen Parallellenker 5 bewirkt, weil der Bremsklotzschuh 2 durch die Parallelführung der Hängelasche 3 einerseits und durch den Parallellenker 5 andererseits in einer bestimmten Höhe während einer Horizontalbewegung des Bremsklotzes geführt wird. Dies ist insbesondere beim Lösen der Bremse von ausschlaggebender Bedeutung, da sonst bei Nicht-Parallelführung eine Spitze des Bremsklotzes 2' die Lauffläche des Rades weiterhin nach dem Lösen der Bremse berühren könnte, so daß ein gleichmäßiger Verschleiß des Belages 2' nicht gewährleistet wäre.This movement is effected by the
Der erfindungsgemäße Parallellenker 5 gewährleiset jedoch in jeder möglichen Höhenlage des Bremsklotzschuhs 2 eine Parallelführung beim Lösen der Bremse. Die Justierung des Bremsklotzschuhs 2 relativ zur Lauffläche des nicht gezeigten Fahrzeugrades erfolgt während die Bremsklötze 2' an die Lauffläche der Fahrzeugrades gepresst werden. Für den Fall, daß eine Justierung des Bremsklotzschuhs 2 erforderlich war, werden die Reibkräfte zwischen dem Reibelement, beispielsweise einem Spannring und der Reibfläche des Bolzens 8 überwunden, bis eine neue Gleichgewichtslage zwischen Reibkräften und Druck oder Zugkräften, die parallel zur Längsachse des Parallellenkers 5 gerichtet sind, herrscht. Diese neue Stellung des Parallellenkers wird durch die besagten Reibkräfte solange gehalten, bis sich eine neue Justierung entweder durch Bremsung oder durch Verschiebung der Achslage des Fahrzeugrades eingestellt hat. Somit ergibt sich stets ein gleichmäßiges Abheben des Bremsklotzes von der Lauffläche des Fahrzeugrades.However, the
In Fig. 2 wird ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Parallellenkers 5 gezeigt. Dieser Parallellenker 5 besteht ebenfalls aus einem oberen 23 und einem unteren 24 Teil, die bei Überwindung der herrschenden Reibkräfte gegeneinander verschoben werden können. Somit stellt sich auch hier je nach Justierlage eine neue Länge des Parallellenkers 5 ein. Zwei Reibflächen 17,18 des oberen Teils 23 bzw. des unteren Teils 22 werden mit zwei Spannschrauben 19 aneinander gepresst. Zwischen den beiden Reibflächen 17,18 befindet sich ein Reibbelag 20, der je nach Abrieb eine unterschiedliche Stärke einnimmt. Die Spannschrauben 19 werden durch geeignete Tellerfedern 21 vorgesapnnt, so daß stets ein annähernd gleichmäßiger Druck auf die Reibflächen der Reibelemente einwirkt. Das untere Teil 22 des Parallellenkers 5 weist zwei Gewindebohrungen 25 auf, in die das Gewinde der Spannschrauben 19 eingreift. Das obere Teil 23 des Parallellenkers 5 weist zwei Langlöcher 24 auf, in dessen Grenzen sich die beiden Teile 22 und 23 gegeneinander verschieben können.A further exemplary embodiment of a
Somit stellt auch dieses Ausführungsbeispiel ein geeignetes Mittel zur Parallelführung des Bremsklotzschuhs 2 dar.Thus, this embodiment also represents a suitable means for parallel guidance of the
Mit der vorliegenden Erfindung wird eine Vorrichtung vorgestellt, die es gestattet, den Bremsklotz einer Fahrzeugbremse insbesondere beim Lösen der Bremse gleichmäßig von der Bremsfläche des zu bremsenden Fahrzeugrades abzuheben. Hierdurch wird ein gleichmäßiger Abrieb der Bremsklötze (2') gewährleistet. Die Parallelführung des Bremsklotzschuhs (2) wird durch einen erfindungsgemäßen Parallellenker (5) hervorgerufen, dessen Länge nach Überwindung einer gewissen Reibkraft je nach Stellung des Fahrzeugsrades stufenlos eingestellt wird und in dieser Stellung solange gehalten wird, bis eine neue Justierung vorgenommen ist.The present invention presents a device which allows the brake pad of a vehicle brake to be lifted evenly from the braking surface of the vehicle wheel to be braked, particularly when the brake is released. This ensures uniform wear of the brake pads (2 '). The parallel guidance of the brake shoe (2) is caused by a parallel link (5) according to the invention, the length of which, after overcoming a certain frictional force, is set continuously depending on the position of the vehicle wheel and is held in this position until a new adjustment is made.
- 11
- Gehäuse des StellmechanismusActuator housing
- 22nd
- BremsklotzschuhBrake shoe
- 2'2 '
- BremsklötzeBrake pads
- 33rd
- HängelascheHanging tab
- 44th
- FahrzeugrahmenVehicle frame
- 55
- ParallellenkerParallel link
- 66
- KugelkopfBall head
- 77
- ReibelementFriction element
- 88th
- ReibbolzenFriction pin
- 99
- Bohrungdrilling
- 1010th
- HülseSleeve
- 1111
- AbdichtteilSealing part
- 1212th
- DichtringSealing ring
- 1313
- Innengewindeinner thread
- 1414
- Bolzenbolt
- 1515
- unteres Teillower part
- 1616
- KolbenstangePiston rod
- 1717th
- ReibflächeFriction surface
- 1818th
- ReibflächeFriction surface
- 1919th
- SpannschraubenTurnbuckles
- 2020th
- ReibbelagFriction lining
- 2121
- TellerfedernBelleville washers
- 2222
- unteres Teillower part
- 2323
- oberes Teilupper part
- 2424th
- LanglöcherElongated holes
- 2525th
- GewindebohrungTapped hole
Claims (11)
- Device for the parallel guidance of the brake block shoe (2) of a brake block brake in a vehicle, in particular a rail vehicle, having a hanger lug (3) which is secured at one end rotatably on the vehicle frame (4) and at its other end rotatably on the brake block shoe (2), characterised by- an additional parallel rod (5) which is arranged parallel to the hanger lug (3) so that its pivot points together with the pivot points of the hanger lug (3) describe a geometric figure in which at least two opposite aides lie parallel; and- the two other ends of the parallel rod (5) are coupled by means of a friction element.
- Device according to claim 1, characterised in that the parallel rod (5) is secured at one end rotatably on the vehicle frame (4) and its other end rotatably on the brake block shoe (2).
- Device according to claim 1, characterised in that the longitudinal axis of the parallel rod (5) is arranged to be parallel to the longitudinal axis of the hanger lug (3).
- Device according to claim 1, characterised in that the parallel rod (5) is approximately as long as the hanger lug (3).
- Device according to claim 1, characterised in that the friction element comprises a clamping sleeve.
- Device according to claim 1, characterised in that the friction element comprises a wrap spring (7).
- Device according to one of the preceding claims, characterised in that the friction element (7) is fitted on a pin shaft (8) of the portion of the parallel rod (5) which protrudes into the bore (9) of a sleeve (10) surrounding the pin shaft (8).
- Device according to one of the preceding claims, characterised in that the bore (9) in the sleeve (10) is sealed by a cover portion (11) with a sealing ring (12), the cover portion (11) having a threaded portion (20) which engages into the internal thread (13) of the sleeve (10).
- Device according to claim 1, characterised in that the parallel rod (5) has a friction element whose friction lining (14) is arranged between two surfaces (17, 18), pressed against each other by screws (19), of the parallel rod (5) divided into two sections.
- Device according to claim 9, characterised in that the screws (19) are prestressed by plate springs (21).
- Device according to claim 9, characterised in that a section of the parallel rod (5) has oblong apertures (24) through which the clamping screws (19) engage.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4235310A DE4235310C2 (en) | 1992-10-20 | 1992-10-20 | Device for parallel guidance of the brake shoe of a block brake |
| DE4235310 | 1992-10-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0594057A1 EP0594057A1 (en) | 1994-04-27 |
| EP0594057B1 true EP0594057B1 (en) | 1995-07-19 |
Family
ID=6470870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93116624A Expired - Lifetime EP0594057B1 (en) | 1992-10-20 | 1993-10-14 | Parallel guiding device of a brake shoe |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0594057B1 (en) |
| AT (1) | ATE125215T1 (en) |
| DE (2) | DE4235310C2 (en) |
| ES (1) | ES2074377T3 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103693069B (en) * | 2013-12-30 | 2016-05-18 | 常州南车铁马科技实业有限公司 | Tread brake device |
| CN108869582A (en) * | 2018-06-08 | 2018-11-23 | 滁州市外星人装备科技有限公司 | A kind of automobile chassis brake support frame |
| JP7133380B2 (en) * | 2018-07-26 | 2022-09-08 | ナブテスコ株式会社 | Attitude control device and brake device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2150631A (en) * | 1937-07-21 | 1939-03-14 | Transit Res Corp | Brake shoe linkage |
| FR67332E (en) * | 1954-12-18 | 1958-02-20 | Westinghouse Freins & Signaux | Advanced shoe brake |
| FR2044623A1 (en) * | 1969-02-25 | 1971-02-26 | Westinghouse Freins & Signaux | |
| US3696892A (en) * | 1971-02-08 | 1972-10-10 | Gen Signal Corp | Brake head-centering device for railway brake apparatus |
| US4241396A (en) * | 1978-10-23 | 1980-12-23 | International Business Machines Corporation | Tagged pointer handling apparatus |
| DE3336983A1 (en) * | 1983-10-11 | 1985-04-25 | Knorr-Bremse GmbH, 8000 München | BLOCK BRAKE FOR RAIL VEHICLES |
-
1992
- 1992-10-20 DE DE4235310A patent/DE4235310C2/en not_active Expired - Fee Related
-
1993
- 1993-10-14 DE DE59300377T patent/DE59300377D1/en not_active Expired - Lifetime
- 1993-10-14 ES ES93116624T patent/ES2074377T3/en not_active Expired - Lifetime
- 1993-10-14 AT AT93116624T patent/ATE125215T1/en active
- 1993-10-14 EP EP93116624A patent/EP0594057B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ATE125215T1 (en) | 1995-08-15 |
| ES2074377T3 (en) | 1995-09-01 |
| DE4235310C2 (en) | 1996-07-11 |
| DE4235310A1 (en) | 1994-04-21 |
| EP0594057A1 (en) | 1994-04-27 |
| DE59300377D1 (en) | 1995-08-24 |
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