EP0802102B1 - Switch end lock - Google Patents

Description

The invention relates to a switch end closure for movement and fixation of railroad switch tongues.

A turnout system includes one or more Clasp closures and a switch termination, which are about Linkages are connected to each other or one each own separate drive. The one or more clasps and the point end closure provide a synchronous Adjustment of different distances safely, the or the turnout locks have the task of Switch tongues to move and in their end position lock.

The turnout end closure is used in the turnout area movable tongue rail in a controlled manner and on to bring one side to rest on the stock rail. On on the other hand, the tongue rail is in one predefined distance, the so-called drive-through groove, to the Brought stock rail. A predefined drive-through groove is required exist so that the wheels of a rail vehicle are not on rub the tongue rail and damage it or even open it open the tongue rail and derail.

In terms of technology, the standard system is Deutsche Bahn's GMV AG well known. The system consists of an isolated one Slide rod on which eight pressure pieces are screwed on. When switching the switch, the slide rod is also the screwed-on pressure pieces horizontally in the longitudinal direction the slide rod moves. The pressure pieces on the The slide rod engages with the tongue block the tongue rail is attached, and move the Tongue clamp fastened tongue rail to the stock rail approach or away from this. This will make the right one Track adjustment causes.

A guide piece is attached to the stock rail is provided with an opening through which the slide rod passes. Slides when the slide rod is actuated this through the guide piece fixed to the stock rail, which ensures regular lubrication of the slide rod is required. In the same way, the slide rod occurs through a U-shaped recess in the tongue block. Therefore it is a regular in the area of the block guide Lubrication of the slide rod is necessary.

Relative movements occur in the operation of the switch Tongue rail and stock rail, there is a risk of that the system jams, especially the Slide rod in the passage opening of the guide piece. The guide piece must then be used by the railway maintenance staff loosened, realigned and back on the stock rail be attached.

Both the pushrod and the one on it screwed pressure pieces have a toothing, over which the positioning of the pressure pieces to the position of the Tapping the tongue. On a pushrod are as above eight pressure pieces were screwed on. there form two each on opposite sides of the Push rod attached pressure pieces a stop or a Driving element for the tongue block. The thrust pieces are on the side facing the slide rod in the installed position is provided with a toothing and the slide rod has a corresponding toothing in the contact area to the Pressure pieces on. This creates in addition to Fastening the pressure pieces on the slide rod by means of one or more screw connections a positive one Contact between the slide rod and the pressure pieces and with the help of the crosswise to the setting direction of the Thrusting teeth can be used on both Sides of the slide pieces arranged, belonging together Pressure pieces in a corresponding position in relation be brought to the pushrod. Because of the Providing double teeth, d. H. a gear two opposite sides of the slide rod and the Increased number of individual parts is the standard system of the Deutsche Bahn AG complex to manufacture, in the Setting and in maintenance.

DE 195 02 105 A, the prior art under Art. 54 (3) EPC describes a soft end closure with a pushrod on corrosion-resistant, maintenance-free rollers is stored, the rollers each are arranged in guide pieces on the stock rail are attached. The pushrod is between U-shaped Legs of a tongue block and the Sliding contact surfaces of the slide rod are in the area of Molybdenum coated tongue block. The advantage of this design is that the actuating forces to move the Slide rod can be reduced and maintenance simplified is by the regular lubrication of the moving parts of the Switch tongue closure device can be omitted.

The invention has for its object a To propose switch end closure that is easy to manufacture and is as low-maintenance as possible.

This object is solved by the features of claim 1.

According to claim 1 is a switch end closure for movement and Fixation of railroad switch tongues with a Slide rod, on which pressure pieces can be attached, characterized in that the pressure pieces on one side and in Installation position are arranged on top of the slide rod.

By the pressure pieces only on one side on the Slide rod are arranged opposite the conventional systems the number of to be assembled Halved pressure pieces. This is not a disadvantage the conventional systems because tests and Observations have shown that when used conventional systems usually only one of the two Sides of the push rod arranged pressure pieces against the Tongue butt bumps. In contrast to the conventional ones Systems are the pressure pieces in the installation position on top of the Slide rod arranged. This has the advantage that at an adjustment or readjustment of the pressure pieces on the Push bar this easy for the turnout mechanic are accessible. As a result, the accruing Maintenance work simplified.

Advantageous embodiments are due to the rest Claims marked.

According to a preferred embodiment, the Switch end closure for moving and fixing railroad switch tongues a pushrod that is on corrosion-resistant, maintenance-free rollers are stored, wherein the rollers are arranged in guide pieces which the stock rail can be attached.

By guiding the slide rod on Corrosion-resistant, maintenance-free rollers will reduce friction between the slide rod and the guide pieces reduced and no lubrication is required Push rods in the area concerned. This allows the regular maintenance work significantly reduced become. Furthermore, the displacement of the slide rod always smooth, so that to move them necessary actuating forces are lower. Therefore can finally the performance of the actuator as well be interpreted accordingly lower.

According to an advantageous embodiment, the Push rod between a U-shaped legs Tongue butt and the sliding contact surfaces of the Slide rod in the area of the tongue block is molybdenum coated. By coating the sliding contact surfaces the slide rod is also omitted in this area manual lubrication, which makes the maintenance work on Switch end closure further reduced. The slide rod is advantageously in the region of the Attachment of the pressure pieces with a toothing or Corrugation provided, which corresponds to a toothing or corrugation is formed on the pressure pieces. Even though a continuous adjustment of the pressure pieces in the longitudinal direction the slide rod is hereby excluded, by the defined displacement of the pressure pieces in the area of Gearing or corrugation, adjustment and readjustment facilitated as part of maintenance work. For this are the Thrust pieces preferably in the longitudinal direction of the slide rod adjustable.

Are advantageously on an entire slide rod four pressure pieces can be attached. Two each of the four Pressure pieces are in contact with after an adjustment process the tongue block and press the tongue rail against the Stock rail or keep it at a predetermined distance to the stock rail.

According to an advantageous embodiment of the invention in the slide rod in the area of the attachment of the Pressure pieces steel bolts pressed in with an external thread. As a result, the fasteners between the Slide rod and the pressure pieces captive with the Push rod connected and it needs to fix the Pressure pieces only suitable, self-locking nuts be screwed on.

Fig. 1

eine Seitenansicht eines Teils des erfindungsgemäßen Weichenendverschlusses in teilweiser Schnittdarstellung;

Fig. 2

eine Seitenansicht des Führungsstückes mit eingeschobener Schieberstange; und

Fig. 3

eine Schnittdarstellung entlang der Linie A-A in Fig. 1 zeigt.

The invention is described below purely by way of example with reference to the accompanying drawings, in which:

Fig. 1

a side view of part of the switch termination according to the invention in partial sectional view;

Fig. 2

a side view of the guide piece with inserted slide rod; and

Fig. 3

a sectional view taken along line AA in Fig. 1.

In Fig. 1, part of the switch termination 10 is for Movement and fixation of railroad switch tongues in partial sectional view shown. The Slide rod half 12, which on the in the plane of the Fig. 1 right side with another Slider rod half is fixed, serves one Tongue rail 14 to move specifically. While the in Fig. 1st Tongue rail 14 shown firmly against the stock rail 16th is pressed, the second, not shown in Fig. 1 Tongue rail 14 in the area of the other slide rod half held at a defined distance from the stock rail, whereby a drive-through groove with a predetermined distance is formed between the tongue rail and the stock rail.

The stock rail 16 is a conventional one Railroad track as they are, for example, under the designation UIC 60 is used by Deutsche Bahn AG. On Tongue clamp 18 is attached to the tongue rail 14, wherein the attachment preferably with the help of a Fixing screw 20 is carried out in a Eccentric bushing 22 is guided and thus an adjustment of Tongue rail in the longitudinal direction of the slide rod allows. Reference numeral 24 designates a locking pin, which by a through hole in the tongue block 18, against Falling out is secured and prevents the Unintentionally loosen the fastening screw 20 or if it breaks can fall out in the thread. In addition, the Provide fastening screw 20 with split pin openings 26, through the one, not shown in Fig. 1, cotter pin is pushed, the inadvertent twisting of the Fixing screw 20 prevents a Locking plate 26a on the towering part of the Tongue butt 18 supports. The locking plate 26a is preferably with one to the hexagon of the fastening screw 20 positive twelve-hole formed. The Locking plate 26a is changed in height by a in Fig. 1st The cotter pin, not shown, is secured in the cotter pin opening 26.

The tongue block 18 is in the region of the slide rod 12 fork-shaped, the one shown in Fig. 1 Sectional view of only one leg 28 of the tongue block 18 is visible. Between the two legs 28 of the Tongue butt will slide the pushrod with enough play led in all directions.

The tongue block 18 is preferably made of micro-alloyed Forged steel. This reduces wear and it can be compared to using an unalloyed one Structural steel forged component increases the service life become.

To the guided between the legs 28 of the tongue block To store slide rod 12, this is on guide rollers 30th hung up, each rotatably fastened in the guide piece 32 are. 1, as explained above, is only a part a slide rod half shown. The second edition that of the two slide rod halves Slide rod also happens on one Leadership role, the associated guide piece with the second stock rail is firmly connected.

The guide piece 32 is fixed to the stock rail 16 attached, using a turnout screw 34 for this purpose arrives at the U-shaped web in one to the position of Corresponding standard holes from Deutsche Bahn AG Distance between two bolts are fixed. The Bolts of the turnout screw 34 are by the existing holes in the stock rail 16, the Guide piece 32 attached to the threaded bolt and that Guide piece fastened with turnout nuts 36. soft nuts have a defined width across flats for which limited tool set of the turnout mechanics of the Germans Bahn AG the appropriate tool is available.

The guide piece is also preferably made of micro-alloyed Forged steel.

When the switch is set, the slide rod 12 axial, d. H. in the direction of their longitudinal extension by a suitable drive moves. This drive can either be separately connected to the slide rod 12 or the pusher rod is connected to one or more rods Clasps connected and the or the Clamp closures as well as the switch end closure by means of operated by a common drive. During the setting process the slide rod 12 is moved horizontally in the longitudinal direction and on the slide rod pressure pieces 38 cause the desired track setting.

The pressure piece 38a shown in Fig. 1 is in contact with the tongue block 18 and thus presses the tongue block fixed tongue rail 14 against the stock rail 16. When Adjustment process is on the one hand the tongue block relative to Stock rail moves and thus the tongue rail in the direction the stock rail moves and further after the completion of the Setting the tongue rail in firm contact with Stock rail held.

Also the other not shown in Fig. 1 Slider rod half has thrust pieces 38a and 38b, corresponding to that shown in Fig. 1 Position on the other half of the push rod the pressure piece 38b is in contact with the tongue block 18 and this a predetermined distance from the stock rail 16 holds. This predetermined distance, the drive-through groove is a fixed, predetermined quantity and is used so that the wheels of a rail vehicle are not undesirably come into contact with the tongue rail and possibly derail.

If the slide rod 12 during the adjustment process in the direction of the arrow B shown in Fig. 1 moves, so that occurs Pressure piece 38b in contact with the tongue block and displaces this in the drawing plane in Fig. 1 to the right until the desired drive-through groove between stock rail and Tongue rail was manufactured. Then the Tongue clamp on the pressure piece 38b and until Execute a new adjustment in this position fixed.

The pressure pieces 38a, 38b are made of metal and are preferably forged from microalloyed steel. On the the slide rod 12 facing side have the Pressure pieces a toothing or corrugation that corresponding to a toothing or corrugation 40 is carried out on the upper side of the Slide rod 12 is made. This creates a positive contact between the pressure pieces and the Slide rod and it can be a defined, step by step Carry out adjustment of the pressure pieces. The thrust pieces are each provided with an elongated hole 42 through which a Fastening bolt 44 can pass through, which is preferably into the slide rod 12 in the area of the toothing 40 is pressed. Pressing in the fastening bolt 44 has the advantage that it is captive with the Slide rod 12 is connected and therefore the maintenance and Assembly work can be simplified. On one level, appropriately shaped support in the area of the elongated hole 42 a disc 46 is placed and on the external thread of the Fastening bolt 44 a self-locking nut screwed. This could be a so-called Gally mother, for example come to use, the self-locking and repeated is usable. Here too it should be ensured that the width across flats in the tool set of turnout mechanics is available. By the pressure pieces 38 in the installed position above are attached to the slide rod, is for adjustment and Maintenance work is easy to access Fastening nuts as well as the pressure pieces guaranteed.

The pressure pieces have on the tongue block 18th facing side a stop area in which the Thrust piece each has a fork-shaped shape, whereby the legs 50 on both sides of the slide rod 12 extend and at the same time the stop area Installation position rises far enough over the slide rod 12 to a sufficiently large contact area with the Training tongue block 18.

To the thrust pieces in the axial direction, d. H. longitudinal the pushrod must move or adjust the fastening nut 48 are loosened until the concerned pressure piece over the engagement area of the Gears 40 can be raised. Then the pressure piece be moved axially, with the fixed in the Push rod pressed in fastening bolts 44 in Longitudinal direction of the elongated hole 42 moves. In conclusion, the self-locking nut 48 tightened again.

Fig. 2 shows a guide piece 32 with attached Turnout screw 34, the guide roller 30 and the Slide rod 12, which rests on the guide roller 30.

As already described above, the guide piece 32 on the stock rail using a turnout screw 34 attached to the U-shaped web in a position to the Corresponding standard holes from Deutsche Bahn AG Distance between two bolts are fixed. The Bolts of the turnout screw 34 are by the existing holes in the stock rails, that Guide piece 32 placed on the threaded bolt and this fixed with switch nuts 36. To solve the To prevent switch nuts 36, their rotational movement prevented by a locking plate 52. The locking plate 52 is secured by a securing bolt 54, the Hole is centered between the two standard holes for the bolt is located. With help of a Locking split pins 56 become the movement of the locking plate 52 prevented in the axial direction of the turnout screw 34.

The guide piece 32 has two legs, between which the slide rod 12 extends and the guide roller 30 is attached. The guide roller 30 runs on a Axle pin 58, each through holes in the Legs of the guide piece 32 inserted and on a suitable way, e.g. B. with the help of a split pin 60, secured against loosening. The guide roller 30 is off formed and possesses a corrosion-resistant material a longitudinally central bore through which the axle pin 58 passes through. This is the Guide roller rotatable relative to the axle pin. The As already stated above, guide roller 30 forms a support for the slide rod 12, which due to the Line contact between the slide rod and the rotatable one Guide roller with little effort and therefore without that Requires lubrication. This allows the Maintenance effort of the point end closure clearly be reduced. Between the slide rod 12 and the Legs of the guide piece 32 a distance d is formed, which is about 10 mm. This is the jamming of the Slide rod excluded in the guide piece and the in In the event of jamming, the maintenance work required Loosening the guide piece, realigning and fastening eliminated.

Fig. 3 shows a sectional view along the line A-A in Fig. 1. First, the tongue block 18 is attached the tongue rail in more detail than in Fig. 1 visible. To the one is a split pin 66 visible through the Pin holes in the fastening screw 20 is inserted and an unwanted twisting of the fastening screw 20 prevented. So that the power flow from the tongue clamp to the Tongue rail not alone from the fastening screw 20 and the eccentric clamping bush 22 must be received a wedge 64 (see also Fig. 1) between the tongue block and Tongue rail hammered in and with a locking plate 62 secured. Both the wedge 64 and the locking plate 62 are standard parts of turnout mechanics. The tongue block 18 has a forked shape with two legs 28, between which the slide rod 12 is guided. In the area the passage of the slide rod between the legs 28 of the tongue block, the slide rod is preferred molybdenum coated, which is why a manual lubrication of the There is no slide rod in this area. Thus, the Maintenance costs can be further reduced.

Through the use of steel-forged individual components microalloyed steel can wear the switch termination according to the invention reduced and Lifetime of the components can be increased. Due to the Leave the use of standard elements of the Deutsche Bahn adjustment and adjustment work easily and without problems carry out, since the tools required for this by the Switch locksmiths are carried.

In contrast to conventional systems, there are only four Pressure pieces applied to an entire slide rod, which means that the teeth on the pushrod only must be manufactured on one side. Furthermore, the Attachment of a single pressure piece on one side of the Slide rod has the advantage that there is no gear offset the slide rod can occur.

The switch end closure according to the invention is in the Technology has long been known box-shaped Track sleepers can be used and can also easily counteract horizontal systems are replaced. There are none new drilling patterns on the tongue and stock rail required.

Reducing the number of components of the Switch end closure as well as the provision of teeth on only one side of the pushrod moreover, the switch end closure according to the invention less expensive to manufacture.

Claims (8)

1. Points terminal for moving and fixing railway points tongues having a slide rod (12), to which thrust pieces (38a, 38b) can be attached, characterised in that the thrust pieces (38a, 38b) are arranged on one side and in installation position at the top of the slide rod (12).
2. Points terminal according to claim 1, characterised in that the slide rod (12) is provided in the region of attachment of the thrust pieces (38a, 38b) having gearing or ribbing (40), which is designed corresponding to gearing or ribbing on the thrust pieces.
3. Points terminal according to claim 1 or 2, characterised in that the thrust pieces (38a, 38b) can be adjusted in longitudinal direction of the slide rod.
4. Points terminal according to one of claims 1 to 3, characterised in that four thrust pieces (38a, 38b) can be attached to an entire slide rod.
5. Points terminal according to one or more of claims 1 to 4, characterised in that steel bolts (44) with external thread are pressed into the slide rod (12) in the region of attachment of the thrust pieces.
6. Points terminal according to one of the preceding claims, characterised in that the slide rod (12) is mounted on corrosion-resistant, maintenance-free rollers (30), wherein the rollers are arranged in each case in guide pieces (32) which can be attached to the stock rail (16).
7. Points terminal according to claim 6, characterised in that the slide rod (12) is guided between U-shaped limbs (28) of a tongue attachment (18); and the sliding contact surfaces of the slide rod are coated with molybdenum in the region of the tongue attachment.
8. Points terminal according to claim 1 or 6, characterised in that the slide rod (12) is forged from micro-alloyed steel.

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