DE529814C - Fluid brake, especially for railway buffers - Google Patents

Description

GERMAN EMPIRE

ISSUED ON
JULY 17, 1931

REICH PATENT OFFICE

PATENT LETTERING

CLASS 2Oe GROUP

R 74688 Uj 20 e date of the announcement about the grant of the patent: Q. July

Rheinische Metallwaaren- und Maschinenfabrik in Düsseldorf *) Liquid brake, especially for railway buffers

Patented in the German Empire on May 17, 1928

The subject of the invention is a fluid brake, especially for railway buffers. Fluid brakes, which are used, for example, in recoil guns, but in particular also find use as pulling and pushing devices in railway vehicles and for generating and regulating the magnitude of the braking force, liquid passages closed like a valve own in the brake piston,

ίο have been in place of the rigid and of! special springs loaded valves self-resilient from closing organs in the form of slotted, Radially flexible rings are obtained, which are pretensioned around radial passages are placed in the brake piston. With the limited space of the brakes, specifically for buffers, but prepares the accommodation and storage of such valve rings difficulties, also leads to the pre-tension already given to the rings in the idle state in continuous operation easy to overuse and fatigue, so the required Braking force is no longer achieved in a short time.

Therefore, according to the invention, there is the shut-off valve, which the size of the braking force regulates, from one in the rest position of the brake parts without preload on the piston face that delimits the passages tightly mounted disc spring. This disc spring, which appropriately takes the form of a Obtained flat disc, can be clamped between the brake piston and a Lightly fasten the ring protrusion of the piston rod; their lack of tension in a state of rest protects them from fatigue in operation.

The drawing illustrates an embodiment of the fluid brake according to Invention of a sleeve buffer in longitudinal section.

In the cavity of the outer buffer parts formed by the guide sleeve a, the tubular plunger b and the base plate c , the fluid brake is used in a known manner as an independent braking and suspension mechanism. It contains the brake cylinder d, in which the displacement piston e is slidably mounted by means of the piston rod ^ held by the return spring / in contact with the tappet δ. The piston E has a plurality of through channels e _v These are completed on the piston rod side facing piston end face by a sealing resting plane Plattet that g without on-voltage between a shoulder of the rod and is secured in this screwed piston e.

When the buffer plunger b is pushed into the guide sleeve α , the piston is pressed into the displacement chamber (I _{1 of} the brake cylinder. The fluid displaced in the process flows through the piston channels e _x and while lifting the resilient edge surface of the plate h

"1 The patent seeker stated that the inventor was:

Carl Waninger in Düsseldorf.

in the recording room d ₂ . The braking force results from the spring deflection of the valve plate h.

For Rüektrit-t- the brake fluid from the receiving space d ₂ into the pressure space d _x when the piston # from the pressure space d _L through the recoil spring / can either Her non-shown check valves in the piston or in the ίο piston or brake cylinder wall in a known manner incised trains serve.

Claims (1)

Claim: Liquid brake, especially for railway buffers, with a ventu-like closed Fluid passages in the 15 brake piston, characterized in that the closing valve, which regulates the size of the braking force, one in the rest position of the brake parts without bias on the the piston end face delimiting the passages, tightly mounted disc springs is. 1 sheet of drawings