DE2117953A1 - Rubber-metal stop with plastic sliding surface - Google Patents

Description

SOCIETY FOR TECHNICAL PROGRESS

December 9, 1971 PA 90 000 MK / Pr P 21 17 953.3

"Rubber-metal stop with plastic sliding surface"

The present invention relates to a stop which, for reasons of freedom from maintenance, is vulcanized together with a plastic plate with the lowest possible coefficient of friction.

It is known to reinforce the type of buffers acting attacks with plastic sheets, are thus kept low without lubrication, the sliding resistance μ

can and therefore maintenance-free is ensured. Because in general such attacks, e.g. Have bogies facing large areas

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BATH ORIGINAL

there are no defects because of the flexibility of the plastic material - essentially polyamide - result. But when the same thing was required with limited space and great forces, e.g. When supporting torques on retarders in truck construction, you had to put the stop on a ball— let the dome take effect. The plastic plate bent under the local pressure of the impacting one Counterpart, so that there was no longer any transverse mobility between the two. If you wanted to make the plastic plate rigid enough, the installation height would in general is limited, there is not much left of the elastic rubber layer, i.e. the The attack would be too hard.

The invention solves the problem resulting from this deficiency in that one is at a short distance one under the polyamide layer in the rubber Metal plate vulcanized into place, which is exposed to the local stress of the plastic plate cannot deform the sliding bolt.

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As a result, the polyamide disc is no longer in able to bend and do its job to the full.

Figures i - 3 explain the invention:

Figure 1 shows a known cradle carrier 1 in

a bogie 2, which is relative to the rotating "

frame attached stop A must be able to move while simultaneously taking up the " Forces in the P direction that are generated by braking forces, for example. Here it is enough to use the elastic Part of the stop A is a wear-resistant polyamide disc vulcanize so that the frictional forces between the stop and the cradle remain small. This is state of the art

FIG. 2 shows a retarder 3, for example in a bus, which is located in the shaft train and which is now on consoles in the chassis 4 via the elastic stop B and the spherically rotated pin 5 its braking torque M must give up. It is clear that the

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Shaft means must be able to move freely on all sides with respect to the chassis, so that relative movements between the support pin 5 and the stop B occur all the time. If the stop B were only to receive a friction-reducing polyamide disc, so this would have to be made so thick that there is hardly any height left for the actual elastic part would be available. For this reason, the

Stop according to the invention, as shown in Figure 3, educated.

FIG. 3 shows a metal plate 11 with its fastening element , on which the elastic stop is βυΐνμ ^ 3ηΐ5ίεΓΐ. 13 is the well-known polyamide disc, which presses against the bolt 14 moving in the transverse direction and at the same time by its small Frictional resistance, lateral forces that occur when hiking of the bolt in the Q-direction, keeps it small. So that the polyamide disc 13 under the Force P, which occurs locally at the base of the counterpart 14, cannot bend, is one Metal plate 16 connected to the sliding disk 13 by vulcanization via a thin rubber layer 15. In this way it is possible that the parts

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11 and 14 are cushioned against one another in the P direction, while they are almost unhindered in the Q direction can wander against each other.

It is therefore possible, given the space available, to accommodate the greatest possible, resilient and noise-isolating rubber height.

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Claims (1)

Claim Rubber metal stop with vulcanized sliding surface made of plastic, characterized in that under the plastic stop plate (^ 3) in a little Distance from it a metal plate (16) is vulcanized " 209845 / 01.78