EP2789891B1 - Lubricating device for railway point locks - Google Patents

Description

The invention relates to a lubricating device for switch closures, in particular for lubricating a cooperating with a closure piece closure pawl and cam bar.

As a closure device for switch blades or tongue rails latch locks, consisting of a tongue block, a closure piece, a closure pawl and cam or slide rods, well known and described (see DE 10 2008 060 229 A1 . GB 325 977 A1 ).

In the simultaneous, opposing adjustment of the two Weichenverschlussseiten in a railway turn the sliders slide along the respective jaw rail foot, wherein the closure pawl of a soft-lock side dips into the closure piece and this engages behind for locking the tongue rail adjoining the stock rail. The other closure pawl is released from the locking engagement with the closure piece, so that the other, opposite points closure side is open and the tongue rail is removed here at a suitable distance from the stock rail.

To ensure a smooth sliding and effortless locking and unlocking of the pawls, a suitable lubricant must be applied to them.

In practice, the switch locks by appropriate maintenance personnel by hand, for example, lubricated so that a lubricant mixture is applied to the pawls by means of a brush, with neither amount of lubricant nor lubrication frequency can be defined with sufficient accuracy. A part of the lubricant applied in this way already reaches the lubricating z. B. on the ballast bed. Environmental pollution and an unnecessarily large accumulation of dirt bound by the excess lubricant make additional labor-intensive cleaning necessary.

Furthermore, point lubricators are known to work on the principle of a garden sprayer. The reservoir for the lubricant mixture is carried by an operator with the aid of a support frame on his back. The reservoir is connected via a hose with a lubrication lance through which the lubricant is conveyed at a pressure of about 3 - 6 bar.

These weighers have a curb weight of about 5 kg, plus the weight of the lubricant is up to 5 I. For use in practice, these devices are too bulky and oversized, as per switch only a small amount of lubricant is needed.

Especially for points outside of railway stations and on high-speed lines (> 200 km / h), the safety risk for maintenance personnel plays an increasingly decisive role in the increasing speeds. Here, the travel costs to the location of the switch and the personnel costs to protect the maintenance personnel far exceed the actual lubrication costs.

The invention is therefore based on the object to provide a lubricating device for switch locks, which avoids the aforementioned disadvantages and dangers of manual lubrication while reducing costs.

This object is achieved by arranged on the switch lock and filled with a lubricant cartridges, which deliver the lubricant to the closure latch. The cartridges, which are associated with two switch closures of a points changeover device as a single-point lubricator, do not require separate pressurization to deliver the lubricant. Rather, the cartridge has its own, maintenance-free, z. B. gas-powered or motorized drive unit, which conveys the lubricant to the closure pawl via a movable piston within the cartridge.

The cartridge thus operates independently, and it can be advantageously adjusted so that a precisely defined amount of lubricant is delivered at regular intervals. Preferably, the automatic lubricant interval then takes place when the closure pawl engages behind the closure piece and thus locks the tongue rail against the stock rail.

The greater the time intervals between the individual lubrication intervals, the longer the delivery time of the lubricant in the cartridge. The delivery time of the cartridge can thus be extended to about 12 months.

The invention provides that the cartridge is connected on the output side with a hose element, at the other end of a directly acting on the closure pawl application agent is arranged. The applicator may be a sponge, a fleece pad, a nozzle or the like be supplied via the hose with the lubricant and it is soaked by this.

Once the pawl has passed through the closure of the switch lock, it slides with its surface over the sponge or under the nozzle such that the sponge or non-woven pad is compressed with the lubricant on the surface of the closure pawl distributed or the lubricant is sprayed from the nozzle.

According to the invention, it is provided that the cartridge and the application means are arranged on a holding element which is fastened directly on the closure piece. The holding element is approximately gallows-shaped, wherein the gallows engages over the tail from the side. The cartridge is in this case in a horizontal position laterally adjacent to the closure piece, while the applicator is attached to the gallows and protrudes from above into the recess provided for the closure pawl of the closure piece.

By means of the lubricating device according to the invention, an automatic and reliable lubrication of the point closures is achieved by means of the self-sufficient cartridge which works without any special maintenance. At regular intervals of about 12 months, only the lubricant cartridges need to be changed.

Further features and details of the invention will become apparent from the claims and the following description of an embodiment of the invention shown in the drawings.

Figur 1

in schematischer Gesamtansicht eine Eisenbahnweiche mit Vorrichtung zum Umstellen von als Klinkenverschlüsse ausgebildeten Weichenverschlüssen, wobei die linke Verschlussseite in geöffneter und die rechte Verschlussseite in geschlossener Position dargestellt ist;

Figur 2

in einer Teilansicht als Einzelheit die geschlossene, rechte Klinkenverschlussseite mit daran angeordneter Schmiereinrichtung; und

Figur 3

als Einzelheit die Schmiereinrichtung gemäß Figur 2.

Show it:

FIG. 1

in schematic overall view of a railway switch with device for switching switch locks designed as buckles, the left side of the closure is shown in the open and the right side closure in the closed position;

FIG. 2

in a partial view as a detail, the closed, right latch side closure with lubricating device arranged thereon; and

FIG. 3

as a detail the lubrication device according to FIG. 2 ,

In FIG. 1 is a switching device 1 a railway switch for switching from two-way switch locks 1a, 1b shown. Each switch closure or each switch closure side 1a, 1b - hereafter referred to as the switch lock - has a tongue block 2, a closure piece 3 and a closure pawl 4 (cf. FIG. 2 ) on.

The simultaneous, opposite adjustment of the two points closures 1a, 1b is effected by two identical cam or Schleberstangenhälften 5a, 5b, which are integrally connected to each other via a connecting plate 5c. At the connecting plate 5c engages a drive linkage, which is moved by a servomotor, not shown here. The switch closures 1a, 1b are opened (1a) or closed (1b) by the movement of the cam or slide rods 5a, 5b guided in the closure pieces 3 or on their interaction with the locking pawls 4.

In the case of the closed point closure 1b, a tongue rail 6 is stationary against a stock rail 7. In contrast, in the case of the opened point closure 1a, the tongue rail 6 is removed from the stock rail 7 at a suitable distance, the so-called tongue surcharge.

In the FIG. 2 is shown as a detail in a partial view of the closed point closure 1 b with a lubricating device 8 associated with the closure piece 3. As not shown here, there is a same lubricating device 8 on the switch lock 1 a.

The lubricating device 8 consists of a filled with a lubricant cartridge 9, the discharge side is connected via a hose 10 with a directly acting from above on the closure pawl 4 sponge 11 as application means. Both the cartridge 9 and the sponge 11 are attached to a connected to the closure piece 3 and the closure piece 3 gallows-like cross-headband 12.

The cartridge 9 is a so-called single-point lubricator, which is formed with an internal, compressed gas operated or motorized drive unit, which conveys the lubricant via the hose 10 to the sponge 11 by means of a movable piston 9 inside the cartridge.

In a compressed gas operated cartridge 9, the pressurized gas for actuating the piston is generated by a chemical reaction within the cartridge 9. In the case of the motorized cartridge 9, a battery built into the interior of the cartridge 9 ensures the actuation of the piston. In both cases, it is achieved that the cartridge 9 requires no activation or application from the outside, it thus works independently.

Further, both the compressed gas operated and the motorized cartridge 9 has a setting possibility, which makes it possible that a precisely defined amount of lubricant at regular intervals to the sponge 11 and thus the closure pawl 4 is promoted. The sponge 11 is thereby regularly with Lubricant soaked, but not soaked, which prevents it from spilling out of the lubricant with the sponge.

As soon as the closure pawl 4 has passed or has passed through the closure piece 3, it passes by its surface past the lubricant-impregnated sponge 11 and is thereby supplied with the lubricant. This process is repeated when the closure pawl 4 of the switch closure 1 b is moved back from the illustrated, locked position to the unlocked position outside of the closure piece. The lubrication processes described above for the point closure 1 b equally apply to the point closure 1 a.

LIST OF REFERENCE NUMBERS

1

Changeover

1a

Switch lock side / switch lock

1b

Switch lock side / switch lock

2

tongue attachment

3

closing piece

4

thumb catch

5a

Cam or slide rod half

5b

Cam or slide rod half

5c

connecting strap

6

tongue rail

7

stock rail

8th

lubricator

9

cartridge

10

tube

11

Application agent (sponge, fleece pad, nozzle)

12

headband

Claims (3)

1. A lubrication device for points locking devices (1a, 1b) using lubricant cartridges (9) for lubricating a locking catch (4), interacting with a locking piece (3), and cam rod (5a, 5b), characterized by cartridges (9) arranged on the points-locking-device sides (1a, 1b) as single-point lubricator and filled with a lubricant, which cartridges dispense the lubricant to the locking catch (4), wherein the cartridge (9) is connected to a hose element (10) on the output side, at the other end of which an application means (11) is arranged, which acts directly on the locking catch (4) as soon as the locking catch (4) has dipped through the locking piece (3), wherein the cartridge (9) and the application means (11) are arranged on a holding element (12) which is fastened directly on the locking piece (3).
2. The lubrication device according to Claim 1,
   Characterized
   in that the dispensed quantity of the lubricant can be set by means of the cartridge (9).
3. The lubrication device according to Claim 1 or 2,
   Characterized
   in that the holding element is constructed as a holding bracket (12) overarching the locking piece (3) from one side in the manner of a gallows.

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