Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
  • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
  • B61L5/10—Locking mechanisms for points; Means for indicating the setting of points

Definitions

• the present invention relates to a
• Switch adjustment device in particular a
• Pawl closure with at least one movable component for adjusting a switch blade, wherein the at least one movable component is guided on and / or in stationary components by means of a number of justifyreib lake.
• Pawl lock is known from the European patent application EP 0 624 508 AI. In all these switch closures arises at the Reib toast vom the movable and the stationary components that bring about the adjustment of a switch or moved in the adjustment, after a longer period of operation depending on the number of completed Umstellzyklen the switch wear between the Reibpartnern.
• a special feature here is in the latch locks, in which the lock carrier is made of an aluminum bronze and usually consisting of unalloyed mild steel slide or cam bar with the aluminum bronze forms a friction pair. In this
• Friction pair are the good sliding and emergency running properties of aluminum bronze strongly desired, but partly still creates a relatively high wear. With advanced wear this can even hinder the switch blade migration. In addition to the movement of the slide rod in a direction perpendicular to the track body also takes place a temperature-induced tongue migration in the direction of the track. Is the cam rod already strong through the
• the latch can through the
• the present invention is therefore based on the object, a point adjustment, in particular a
• Pawl lock with at least one movable component for adjusting a switch blade, in which the
• the contact friction surface provides a combination of a hard dimensionally stable component and a component which is softer and has a good sliding properties.
• the hard dimensionally stable component thus contributes to the protection of the softer component against increased wear by abrasion or even seizure of the moving
• the high-strength material for example, as hard metal / ceramic / cermet or hardened steel.
• Carbide is not hardened or tempered steel, but a sintered metal, which consists of the
• the high-strength material in the form of inserts in the very good sliding and emergency running properties having material be formed.
• a plate of a bronze alloy are inserted into the hard metal inserts, for example, pressed, glued,
• the hard metal inserts can be provided for example in the form of bars and / or cylinders and / or other geometric shapes.
• Cylinders can be separated piecewise, for example, from round carbide rods. Carbide can not be sawed, but only with a cutting disc
• Carbide rods are, for example, in the manufacture of carbide drills in the form of
• Carbide drill blanks present.
• the firmer material may also be a bronze alloy. Accordingly, then an even better lubricating material in the form of solid lubricant deposits in the harder bronze alloy can be present.
• Solid lubricant depots may include, for example, a plastic such as PTFE, and / or graphite.
• Embodiment of the present invention results when the movable component is a cam rod, preferably of mild steel, and the stationary component is a bolt carrier or bearing which preferably has a bronze alloy inlaid insert with carbide inserts formed therein in the contact friction surface.
• the lock carrier itself as a casting of a
• Ductile cast iron can be produced and then indicates accordingly in Area of Victorreib simulation the insert with a suitable pair of materials, such as a plate made
• Figure 1 is a schematic representation of a view on a
• Figure 2 is a schematic representation of a view on a
• Figure 3 is a schematic representation of a view of a reinforced with a carbide bar aluminum bronze Einleger
• FIG. 4 is a schematic representation of a view of an aluminum bronze insert reinforced with a hard metal bar with an additional hard material layer;
• Figure 5 is a schematic representation of a longitudinal section
• Figure 6 is a schematic representation of a view of a reinforced with a carbide cylinders
• Figure 7 is a schematic representation of a view of a
• Solid lubricant depots provided with aluminum bronze inlay
• Figure 8 is a schematic representation of a view of a reinforced with a carbide cylinder aluminum bronze Einleger
• Figure 9 is a schematic representation of a side view of a latch closure with lock carrier and lock stock
• Figure 10 is a schematic representation of a side view of the latch closure according to Figure 9 with removed closure carrier.
• FIG. 1 shows a schematic representation of a view of a closure support 2 of a not shown latch closure according to the prior art.
• EP 0 624 508 A1 European patent application EP 0 624 508 A1
• the lock carrier 2 is not further on a rail foot 4 one here
• cam rod 6 In the lock carrier 2, a slide rod - hereinafter referred to as cam rod 6 - guided sliding.
• the cam bar 6 is in both directions of an arrow 8 for adjusting a switch blade not shown here and the
• Cam rod 6 a friction pair, in which the closure support 2 made of aluminum bronze and the cam bar 6 are made of carbon steel mild steel. In this friction pair represents the
• Deviation wear which after a relatively short time (relative to the usual downtime of the railway infrastructure) makes it necessary to replace the closure carrier 2.
• Lock bearing 12 can now be made of less costly ductile iron, whereas the previous
• Aluminum bronze carrier in the more expensive Alubronzeguss had to be produced has on one side a hard metal bar 16, which in the
• FIG. 4 shows another with respect to FIG. 3 only
• Aluminum bronze insert 14 in which here a hard metal bar 16 'is pressed, glued, screwed or soldered, which has itself been coated with a hard material layer.
• both materials benefit again from each other by the lubricating properties of the bronze alloy and by the extremely high wear resistance and hardness of the
• FIG. 3 In the schematic representation of a longitudinal section through the aluminum bronze insert 14 according to FIG. 3 also shows once again a contact friction surface 18 (only a line running from left to right because of the two-dimensional representation).
• the cam bar 6 rests on the surface of the aluminum-bronze insert 14 and the hard metal bar 16 at the same time and slides on these depending on the position of the switch in the graphic plane from left to right or vice versa.
• FIGS. 6, 7 and 8 show three further embodiments for insert plates.
• Figure 6 is a schematic representation of a view of a
• the carbide cylinder 20 are formed as cuts of carbide drill blanks and were in the
• FIG. 7 now shows one over all the preceding ones
• solid lubricant deposits 26 made of, for example, graphite and / or PTFE or other solid lubricants.
• These lubricant depots 26 are pin-like in the
• FIG. 8 shows a further embodiment which is only slightly modified with respect to FIG.
• Aluminum bronze insert 14 here a carbide rod 28 pressed longitudinally, glued, or soldered.
• both materials benefit again from each other by the lubricating properties of the bronze alloy and by the extremely high wear resistance and hardness of the carbide.
• FIGS. 9 and 10 serve to illustrate another contact friction surface 18.
• FIG. 9 shows a schematic side view of a latch closure 30 with the already known closure carrier 2 and a closure bearing 3, which has not yet been shown.
• FIG. 10 shows the same lateral view in a schematic representation View of the latch closure 30 according to FIG 9 with now but

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Train Traffic Observation, Control, And Security (AREA)
• Powder Metallurgy (AREA)
• Sliding-Contact Bearings (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=48227191

Family Applications (1)

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Families Citing this family (2)

Citations (4)

• 2012
  • 2012-04-25 EP EP12165483.4A patent/EP2657101A1/fr not_active Withdrawn
• 2013
  • 2013-04-17 EP EP13719441.1A patent/EP2841319B1/fr not_active Not-in-force
  • 2013-04-17 WO PCT/EP2013/057988 patent/WO2013160168A1/fr not_active Ceased

Patent Citations (4)

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