DE297694C

DE297694C -

Info

Publication number: DE297694C
Application number: DENDAT297694D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

Ve 297694 -KLASSE 20/. GRUPPE Ve 297694 - CLASS 20 /. GROUP

Nachstellvorrichtung für Bremsen. Patentiert im Deutschen Reiche vom 27. Juni 1916 ab. Adjustment device for brakes. Patented in the German Empire on June 27, 1916.

Die Erfindung betrifft eine Vorrichtung an solchen selbsttätigen Nachstellvorrichtungen, für Bremsen zur Regelung der Spielräume zwischen den Radreifen und den Bremsklötzen bei Eisenbahn- und Straßenbahnfahrzeugen, die aus einem in das Bremsgestänge geschalteten Schraub'enschloß bestehen, welches mit seinem Antrieb und einem nachgiebig gelagerten Feststenorgan derart verbunden ist, daß es festgestellt wird, sobald der Reibungswiderstand in den Gewinden des Schraubenschlosses eine weitere Drehung verhindert. Bei solchen Nachstellvorrichtungen besteht das Feststellorgan gewöhnlich aus einer Feder, die in den aus einem Stangensystem bestehenden Antrieb des Schraubenschlosses eingeschaltet ist. . Die Erfindung hat zum Zweck, die ganze Nachstellvorrichtung mit dem Feststellorgan in einem geschlossenen Gehäuse kleiner Dimensionen direkt am Schraubenschloß anschließen zu können, so daß die ganze Vorrichtung vor Staub und Beschädigungen von außen vollständig geschützt wird und nur eine sehr einfache Verbindungsvorrichtung mit einem beweglichen Teil (z. B. mit der Bremskolbenstange) erforderlich ist. Die Montierung der Nachstellvorrichtung an den Wagen wird dadurch auch sehr vereinfacht, daß sie von der Fabrik fertig zum Gebrauch geliefert und an dem Wagen angebracht werden kann, ohne auseinandergenommen werden zu müssen.The invention relates to a device on such automatic adjustment devices for Brakes to regulate the clearance between the wheel tires and the brake pads on railway and tram vehicles, which consist of a screw lock connected to the brake linkage, which with his Drive and a resiliently mounted fixed organ is connected in such a way that it is determined is, as soon as the frictional resistance in the threads of the screw lock a prevents further rotation. In the case of such adjusting devices, there is a locking element usually from a spring which is inserted into the drive consisting of a rod system Screw lock is switched on. . The purpose of the invention is to provide the entire adjustment device to connect with the locking device in a closed housing of small dimensions directly to the screw lock can, so that the whole device from dust and external damage completely is protected and only a very simple connecting device with a movable Part (e.g. with the brake piston rod) is required. The mounting of the Adjusting device on the car is also very simplified in that it is of the Factory ready for use and can be attached to the cart without to have to be taken apart.

Die Erfindung wird in der Zeichnung veranschaulicht, und zwar stellt
Fig. ι die Nachstellvorrichtung auf einer Zugstange zwischen den beiden Hebeln eines gewöhnlichen Luftdruckbremszylinders angeordnet dar.The invention is illustrated in the drawing, namely represents
Fig. Ι the adjusting device arranged on a pull rod between the two levers of an ordinary air pressure brake cylinder.

Fig. 2 zeigt eine Ansicht der Fig. 1, von rechts gesehen.FIG. 2 shows a view of FIG. 1, seen from the right.

Fig. 3 zeigt einen Längsschnitt durch die Nachstellvorrichtung in . größerem Maßstabe.Fig. 3 shows a longitudinal section through the adjusting device in. larger scale.

Fig. 4 ist ein Querschnitt durch Fig. 3, undFig. 4 is a cross section through Figs. 3, and

Fig. 5 zeigt eine Ansicht der Nachstellvorrichtung in Verbindung mit einer gewöhnlichen Vakuumbremse.Fig. 5 shows a view of the adjusting device in connection with an ordinary one Vacuum brake.

Die Bremshebel 1 und 2 sind mit der Bremsvorrichtung auf gewohnte Weise verbunden, und die Nachstellvorrichtung ist auf der diese verbindenden Zugstange 3, 4 angeordnet. Die Nachstellvorrichtung besteht aus einer Schraubenhülse 5, die auf das mit Gewinde versehene Ende des einen Teiles 4 der Zugstange geschraubt ist und bei Drehung, z. B. in der durch den Pfeil in Fig. 2 gezeigten Richtung, mittels einer durch den Kolben im Bremszylinder 30 beeinflußten Bewegungsvorrichtung gedreht werden kann, so daß die Entfernung zwischen den unteren Enden der Hebel und somit die Spielräume vermindert werden. Wenn die Kolbenstange 31 sich beim Anbremsen nach außen bewegt (nach rechts in Fig. 1), so daß die unteren Enden der Hebel 1 und 2 sich einander nähern, wobei die Bremsklötze gegen die Radreifen geführt werden, dreht sich der von der Kolbenstange oder dem oberen Ende des Hebels 2 beeinflußte, doppelarmige Hebel 6 um seine feste Lagerung 32, wobei das untere' mit der Stange 8 gelenkig verbundene Ende des Hebels diese Stange abwärts bewegt. Die Stange 8 dreht dann einen Bügel 7, der anThe brake levers 1 and 2 are with the braking device connected in the usual way, and the adjuster is on this connecting tie rod 3, 4 arranged. The adjustment device consists of a screw sleeve 5, which is screwed onto the threaded end of one part 4 of the tie rod is and when rotating, e.g. B. in the direction shown by the arrow in Fig. 2, by means of a through the piston in the brake cylinder 30 influenced movement device can be rotated, so that the distance between the lower ends of the lever and thus the margins are reduced. If the piston rod 31 moves after braking moved outward (to the right in Fig. 1) so that the lower ends of levers 1 and 2 move approach each other, with the brake pads being guided against the wheel tires, the one of the piston rod or the upper end of the lever 2 influenced, double-armed lever 6 around its fixed mounting 32, the lower end articulated to the rod 8 of the lever moves this rod downwards. The rod 8 then rotates a bracket 7, which

Claims

a mounted on the tie rod part 3 j outer tube 24 is attached, so that the latter moves in the direction of the arrow (Fig. 2). This rotating movement is made by a driver together with a spring locking device on the screw sleeve 5 in the following manner transfer. In the tube 24 is a screw | benfeder 9, of which one end 22 through a Hole in the tube 24 is inserted, while the other end 23 in a recess in the ring 19 is so that the ring takes part in the rotation of the tube 24 by the spring 9 as Driver is used. In the ring 19 is a helical spring 16, which fits exactly into the ring and is partially inserted into a sleeve 18, which Sleeve..with an extension 15 of the screw sleeve 5 is firmly connected. When the ring 19 is rotated, the sleeve 18 becomes taken by the spring 16, since the latter is wound in such a way that it when the sleeve 19 is rotated, it seeks to expand its diameter and thus becomes fixed presses against the inner walls of the sleeves 19 and 18, so that the rotating moment on the Screw sleeve 5 is transferred. As soon as the superfluous leeway is eliminated and the brake pads are resting against the wheel tires, causing further braking tension in! the brake linkage, whereby frictional resistance arises in the threads of the screw sleeve 5, so that a further rotation of the same and thus also a further decrease in the i Clearance is prevented, whereupon the further rotation of the tube 24 by the coil spring 9 is recorded. ;

The reverse rotation of the sleeve 5 when the brake is released is through another Helical spring 17 prevents which is wound in the opposite direction and with j one end into the sleeve 18 and the other end into the sleeve 20 in the same Way as the spring 16 is inserted. The sleeve 20 is attached to the tie rod part 3.

The sleeves 18, 19 and 20 have the same inner diameter, and the coil springs 16 and 17, which in the free state a slightly larger in diameter than the sleeves are pressed into them. It is obvious that, when the tube 24 is rotated back when braking loose, the coil spring 17 strives is to expand so that it rotates back the sleeve 18 and the screw sleeve 5 prevents the sleeve 20 from rotating because it is firmly connected to the rod 3.

The threads of the rod 4 are protected from rust and dust by the tube 25 (Fig. 1).

The springs 16, 17 therefore only allow each one a rotation in one direction. When rotating in the opposite direction, they are ■ strives to enlarge their diameter and prevent "then by their friction with the Inner wall of the sleeves a turn back.

5 shows the same device in connection with a vacuum brake, the screw sleeve being arranged directly on a pull rod 4. The device for transmitting the movement from the piston of the cylinder to the bracket 7 and the tube 24 consists here of a fixed arm 6 ^a mounted on an angle lever 26. In braking, the piston rod is moved upwardly, the arm 6 ^a tube 24 rotates in the same direction as in the embodiment mentioned above, so that the readjustment of the game space is in the same manner as before · on.

The device can also be used with hand brakes or other types of brakes.

Godfather τ-Ans ρ ruch:

Adjustment device for brakes, which consists of a switched into the brake linkage Screw lock exist, which with its drive and a resiliently mounted Locking member is connected in such a way that it is determined as soon as the frictional resistance prevents further rotation in the threads, characterized in that the Fe.ststellorgan consists of a main coil spring (9), which is connected at one end to the drive and at its other end in a main sleeve (19) engages in which an auxiliary coil spring ■ (16) is pressed in, which (16) is fixed in one with the adjusting sleeve (5) connected auxiliary sleeve (18) protrudes in such a way that upon rotation of the main sleeve (19) by means of the main spring (9) influenced by the drive, the auxiliary sleeve (18) because of the Frictional resistance between the main and auxiliary sleeves (19, 18) and the auxiliary spring (16) is taken along by the auxiliary spring (16) expanding during rotation strives, but does not prevent the reverse rotation, while one is in the opposite direction Direction as the auxiliary spring (16) wound counter spring (17) partially in the Auxiliary sleeve (18) and partially fitted into a non-rotatable counter-sleeve (20), so that when the drive is turned back, the counter spring (17) causes the auxiliary sleeve to turn back (18) and the adjustment sleeve (5).

1 sheet of drawings.