DE4406633C2 - Running gear with running and guide wheels for railways - Google Patents

Description

The invention relates to a chassis with wheels and Füh tion wheels for railways, especially bogies where the impellers and guide wheels can be without a rim and torque by the guide wheels to change direction of the wheel axles are generated.

The wear effects on rails are in the book "Basics der Bahntechnik ", J. Fiedler, Werner-Verlag, 3rd edition 1991, shown in Fig. 38 on p. 97. An essential ver The cause of wear is the run-up of the wheel rims on the Rails. Two-axle wagons or bogies pass through the Track arch polygonal.

When using bogies with independent suspension the arc resistance and at high speeds the Wear on wheel and rail significantly reduced.

Various techniques are known with which these Disadvantages should be avoided. It is known that Wheel axles at least small angles around vertical axes trained swivel and with electronic controls that Have sensors with the help of servomotors or Stellzy alleviate to adjust. So the axes become similar Like a non-rail-bound motor vehicle Steering adjusted. The corresponding controls and steering systems However, mechanisms are very complex, expensive and probably also susceptible to failure (DE 41 14 860 C1, DE 41 09 356 A1, EP 03 94 898 B1, EP 03 18 923 B1).

It is also known additional guiding devices to provide. Railway systems with additional guide wheels are  as early as 1916 - using special rails - been known (US-A-11 84 039). Next are leadership for vehicles with rollers running on guide surfaces known, which are combined with discs, which in turn interact with flanks of a groove (DE-PS 8 45 646). Continue guide devices are known which are outside the support rails are attached and along which guide rollers outer guide surfaces run (FR 24 10 589). Finally guideways with switching wheels are known, the preferred can be used with pneumatic tires (AT-PS 3 21 196).

With a chassis of the type mentioned (DE 22 43 910 B2) are in addition to the wheels Füh gears that are rotatable about vertical axes and that run on vertical guide surfaces and thereby the Take over the function of the side guide. Both the wheels as well as the guide wheels do not need wheel flanges to show. The disadvantage of this chassis is that problems with switches, with guardrails, control arms and Wing rails occur because the guide wheels do not can roll over.

The object of the invention is to create a Chassis of the type mentioned, the better sides leadership than normal impellers with flanges, that on the other hand, however, also without problems on existing rail networks with switches, guardrails, control arms and wing rails can be used.

The solution according to the invention is that the axes of the Guide wheels are strongly inclined and so on the inner Surfaces of the rails run that they may too mounted guide rails or wheel links and wing rails have a safety distance of at least 2 mm.

Advantageous embodiments are in the subclaims specified.

The invention on the one hand the wear and tear especially by running up with wheel flanges  provided wheels on the rails on conventional Rails and wheels also occur when driving straight ahead, decreased. On the other hand, the better cornering also better driving behavior, especially at high Ge speed can be expected. Problems with switches, at Guard rails etc. cannot occur because the guide wheels do not rotate around vertical axes, but tilted are always sufficient distance from the guardrails etc. exhibit. This is due to the inclination of the leadership who achieved that is not known in the prior art.

The advantages achieved with the invention are that

• - The wheel system on the conventional rails - also in Switch and crossing area - can be used
• - The surfaces of the rails that are used by the wheels enlarge
• - The track play can be increased
• - The rails, especially in bends, and the convents tional impellers significantly less wear have, so that the maintenance intervals are clear can be enlarged
• - Wheels with easy to manufacture treads used can be
• - The wheel system also in connection with drive or Brake systems can be used
• - Retrofit conventional wagons or bogies Guide wheels can be equipped.

In Fig. 1, a wheel system of the invention for a Drehge stell is shown schematically.

The system is in the middle part constructed like a conventional bogie; the wheels can be without a rim. In the front and rear area of the Bogie are two brackets for the leadership arranged to extend the frame. The axes of the Guide wheels are inclined to the vertical so that the Guide wheels not against guardrails, wing links or similar bump. The running surfaces of the guide wheels can be concave, because in this case the contact surfaces between wheels and Rails are enlarged. The guide wheels run on the upper inner surfaces of the rails.

Claims (6)

1. Running gear with wheels and with guide wheels for rails, especially bogie, in which the wheels and guide wheels can be without a rim and torques for changing the direction of the wheel axles are generated by the guide wheels, characterized in that the axes of the guide wheels are strongly inclined and so on The inner surfaces of the rails run in such a way that they have a safety distance of at least 2 mm from any guide rails or wheel links and wing rails that may be installed. 2. Chassis according to claim 1, characterized in that the Guide wheels with the same peripheral speed as run around the wheels. 3. Running gear according to claim 1 or 2, characterized in that the guide wheels are resiliently pressed against the rails will. 4. Chassis according to one of claims 1 to 3, characterized records that it is also on the common wide-foot shoot NEN and track connections can be used.   5. Chassis according to one of claims 1 to 4, characterized records that it is also in cooperation with the drive system can be used. 6. Chassis according to one of claims 1 to 5, characterized records that it is also in cooperation with the Bremssy stem can be used.