EP1627954A2 - Device for fastening a stock rail on the internal track side of a switch tongue device - Google Patents

Abstract

The fixing device includes spring members (3) of hook-shaped outline with a seating plate on the stock rail foot, and a seating plate which is displaced w.r.t. the straight spring section. The spring members are subjected to torsion during installation via the lever arms of the hooked part, thus pretensioning the spring members.

Description

The invention relates to a device for fastening a stock rail on a track-inner side of a tongue device of a switch.

Internal jaw rails of various types have been used in railways for more than three decades. They serve to hold down the stock rail on the inner track side in the tongue device area, where the overall height of the relative to the control rail, although lower tongue profile does not allow use of the track usual mounting of the rail by clamps.

Disadvantage of this jaw rail tension, however, is that the manufacture of the spring elements by the costly forming process forging takes place.

Another disadvantage is the reduction of the torsional resistance compared to the otherwise usual in the K or KS attachment value by reducing the contact surface of the rail foot on the inside track side up to a lying in Gleitstuhlplattenmitte contact point.

From DE 2409138, EP 4112926 or EP 778372 an internal jaw rail bracing is known in which exclusively on bending or mainly on bending with negligible torsion claimed spring elements are used. However, these have inevitably steep spring characteristics (about 5 mm preload at about 10 kN biasing force) and make appropriate demands on the manufacturing accuracy or lead to correspondingly large fluctuations in the clamping force.

From DE 3230612 an arrangement of an overload protection of the spring elements is also known. This acts in strong vertical deformation by acting alone on the tongue vertical wheel forces (force removal on Gleitstuhlwiderlager / spring element / jaw rail foot) by a second abutment or depending on the degree of deformation reducing effective lever arm. However, there is the possibility of plastic deformation of the spring element and an associated loss of clamping force.

• Die Notwendigkeit aufwendiger Konstruktionen zur Höhenregulierung der Rollen gegenüber der Gleitstuhloberfläche, um die ungleichmäßigen Setzungen der Schwellen im Schotter auszugleichen und ein Schleifen der Zungen auf den Gleitstühlen mit möglicher Störungsfolge auszuschließen,
• Das erforderliche Sortiment an Typen der Zungenrollvorrichtungen in Abhängigkeit vom Einbauort innerhalb der Zungenvorrichtung (Realisierung der verschiedenen Abstandsmaße zwischen Backenschienenfahrkante und Zungenfußinnenseite in Längsrichtung der Zungenvorrichtung).

Tongue rolling devices for the purpose of dispensing with the lubrication of the sliding surfaces of the ribbed plates with slide chair in tongue devices have also been used for many years. Disadvantages of all these types are:

• The need for elaborate structures for height adjustment of the rollers relative to the Gleitstuhloberfläche to compensate for the uneven settlements of the thresholds in the ballast and exclude a grinding of the tongues on the sliding chairs with a possible fault sequence,
• The required range of types of reel rolling devices depending on the installation location within the tongue device (realization of the different distance dimensions between the jaw rail edge and tongue inner side in the longitudinal direction of the tongue device).

From EP 0495160 a tongue rolling device is known. However, this has the disadvantage of a complex assembly and disassembly of the tongue rolling devices when installing the switch and tamping and their height adjustment by using corrosion-prone screw.

It is therefore an object of the invention to provide a device that combines cost-effective production and easy installation with a maintenance-friendly design.

This object is achieved in connection with the preamble of the main claim according to the invention by the features specified in claim 1.

The invention relates to a device for fastening the stock rails on the inner track side in tongue devices with respect to the stock rail lower tongue profile and optional integration of a tongue rolling device. According to the invention, the device consists of hook-shaped or bent spring elements with a clamping-forming abutment on the jaw foot and an offset to the straight spring section supports the Gleitstuhlplatte. The spring elements are stressed during the assembly process by the lever arms of the cranked sections primarily to torsion. The proportion of torsion on the total spring travel can be increased by a zusäztliches abutment in the region of the straight spring section. This essentially results in a bias of the spring elements, ie a hold-down force.

Claims 3 to 12 include advantageous embodiments of claims 1 and 2.

According to claim 3, the cranked or hook-shaped spring element in the relaxed state in the view is flat, has over its entire length a constant, circular cross-section and is made exclusively by bending.

According to claim 4, the Vorspannweg during assembly of the spring element is at least 10 mm and generates a biasing force of about 5 kN.

According to claim 5 prevents a weg- and thus kraftdefiniertes stop the jaw foot / spring element at the lower edge of the Gleitstuhlausnehmung on the jaw rail a plastic deformation of the spring elements by vertical forces.

According to claim 6, the symmetrical arrangement of the two spring elements makes possible a longitudinal division of the slide chair plate in the region of constructionally caused bottlenecks in the tongue device (for example, closure sleepers).

According to claim 7 corresponds to the torsional resistance of the rail fastening by arranging track internal rib sections at the lying in the longitudinal direction side edges of the Gleitstuhlplatte the proportions of K or KS attachment.

According to claim 8, the tongue rolling device is mounted in a symmetrical to Gleitstuhlängsachse arranged slot-shaped recess consisting of a frame and rollers mounted on axles such that pointing to the track outside frame end of the reel rolling device undercuts the slide chair and is held down. As a result, the inner track frame end is frictionally clamped by a spring with the Gleitstuhlplatte and positively fixed via a rack in the transverse direction of the slide chair plate.

According to claim 9, an insert part is snapped or clamped in a correspondingly shaped recess of the base plate, in particular a casting, within the slot-shaped recess of the slide chair that forms the counterpart to the rack of the frame of the reel rolling device.

According to claim 10, the insert is made of plastic.

According to claim 11, the longitudinal sides of a frame of the reel rolling device on such axle holes, which allows the use of only one basic frame type at each point of the tongue device by the variable assignment of the frame with rollers.

According to claim 12, the frame of claim 9 in the transverse direction of the track is adjusted over a rack to the effect that between the foot of the adjacent tongue and the first roller a distance of a maximum of 2 mm is formed. Alternatively, the fixation of the frame can be achieved transversely to the track axis by clamping by means of a guided in the longitudinal groove of the ribbed plate gland.

According to claim 13, the tongue rolling devices are arranged at a defined distance from each other. In this way, taking into account a constructively provided lifting height of the tongue, the vertical deflection of the tongue by the weight of the individual component tolerances and the permissible longitudinal height error of the jaw rails ensures a minimum distance between Zungenfuß the remote tongue and the sliding surface of the Gleitstuhlplatte of 1 mm.

Fig. 1

schematisch eine Gleitstuhlplatte mit innerer Backenschienenverspannung mit hakenförmigen Federelementen und Zungenrollvorrichtung

Fig. 2

schematisch eine Zungenrollvorrichtung mit metallischem Rollenhalter und Klemmung

Fig. 3

schematisch eine Gleitstuhlplatte mit innerer Backenschienenverspannung mit abgestuften Federelementen und Zungenrollvorrichtung

Fig. 4

schematisch eine Zungenrollvorrichtung mit einteiligem Rollenhalter aus Kunststoff

The invention will be explained below with reference to an embodiment with a drawing with two figures. The drawing shows in

Fig. 1

schematically a Gleitstuhlplatte with inner jaw rail bracing with hook-shaped spring elements and tongue rolling device

Fig. 2

schematically a tongue rolling device with metallic roll holder and clamping

Fig. 3

schematically a Gleitstuhlplatte with inner jaw rail bracing with stepped spring elements and tongue rolling device

Fig. 4

schematically a tongue rolling device with one-piece plastic roll holder

In a particularly advantageous embodiment according to FIG. 1, the device for fixing the stock rail on the track inner side in the switching devices with respect to the stock rail (1) lower tongue profile (2) and optional integration of a switch blade rolling device consists of hook-shaped in plan view spring elements (3) adjacent to the straight Spring section (4) lying support on the Backenschienenfuß (5) and two clamping forming Auflagern on the Gleitstuhlplatte (6). During the assembly process, the straight spring section is subjected to torsion via the lever arms of the semicircularly curved sections of the spring element, as a result of which essentially a prestressing of the spring elements, ie their hold-down force, is produced. At the same time, a certain amount of bending force is generated by the bending of the spring element via the abutment (7).

Fig. 3 shows an alternative embodiment with stepped in plan spring elements (3) lying on both sides next to the straight spring section (4) supports on the Backenschienenfuß (5) and the Gleitstuhlplatte (6). In this variant, the proportion of deformation by torsion results from the size of the effective lever arms.

The spring element (3) is flat in the relaxed state in the view, has over its entire length a constant, circular cross-section and is made exclusively by bending.

The preload when installing a spring element (3) is at least 10 mm and generates a preload force of about 5 kN.

A weg- and thus force-defined stop (8) of the cheek rail foot on the lower edge of Gleitstuhlausnehmung on the jaw rail foot prevents plastic deformation of the spring elements by vertical forces.

Due to the symmetrical arrangement of the two spring elements, a longitudinal division (9) of the slide chair plate is possible in the region of structurally caused bottlenecks in the tongue device (for example, closure thresholds).

The torsional resistance of the rail fastening by arranging track internal rib sections (10) at the lying in the longitudinal direction of the side edges of the Gleitstuhlplatte corresponds to the ratios of K or KS attachment.

In a slit-shaped recess arranged symmetrically to the sliding-chair longitudinal axis, the reel-rolling device (FIGS. 4 and 2) consisting of frame (11) and rollers (13) mounted on axles (12) is mounted in such a way that the frame end of the reel-rolling device facing the track outer side projects the sliding chair is undercut and thus held down (14). Furthermore, as a result, the inner track frame end is frictionally connected by a screw connection (FIG. 2) or a spring (15) (FIG Gleitstuhlplatte clamped and positively secured via a rack (16) in the transverse direction of the slide chair plate.

According to claim 8, a plastic part (18) is snapped or clamped in a correspondingly shaped recess (17) of the base plate (for example, casting) within the slot-shaped recess of the slide chair that forms the counterpart to the rack of the frame of the reel rolling device.

The longitudinal sides of the frame (11) of the tongue rolling device have axle bores (19) in such a way that allows the use of only one basic frame type at each point of the tongue device by the variable assignment of the frame (11) with rollers (13).

About the rack (16) of the frame (11) is adjusted in the transverse direction of the track so that between the foot of the adjacent tongue and the first roller a distance of a maximum of 2 mm is formed.

The tongue rolling devices are arranged at such a distance from each other, taking into account the constructively provided lifting height (20) of the tongue, the vertical deflection of the tongue by the weight of the individual component tolerances and the permissible Längshöhenfehler the stock rails a minimum distance between the tongue of the tongue and the sliding surface the slide chair plate of 1 mm guaranteed.

reference numeral

1

stock rail

2

tongue rail

3

spring element

4

straight spring section

5

Support of the stock rail

6

Support on the slide chair

7

abutment

8th

attack

9

Long position of Gleitstuhlplatte

10

rib

11

frame

12

axes

13

roll

14

Undercut the slide chair

15

tension spring

16

rack

17

Recess in the base plate (cast material)

18

Plastics molding

19

Axle holes for positioning the rollers

20

stroke

Claims (13)

Device for fastening a stock rail (1) on a track inner side of a tongue device of a switch with respect to the stock rail lower tongue profile (2) and an optional integration of a tongue rolling device characterized in that the floor plan hook-shaped spring elements (3) by two on the cheek rail foot averted Side lying supports, an abutment lying between these supports and the cheek bar base and a support forming a clamping angled spring portion on the rail foot are twisted and clamped. Apparatus according to claim 1, characterized in that a bracing by in the floor plan cranked spring elements (3) with a clamping forming the support on the jaw foot and offset from the straight spring section supports on the Gleitstuhlplatte via an intermediate abutment. Device according to at least one of claims 1 and 2, characterized in that the spring element (3) in the relaxed state in a view is flat, over its entire length has a constant, circular cross section and is made exclusively by bending. Device according to at least one of claims 1 to 3, characterized in that a Vorspannweg during assembly of the spring element (3) is at least 10 mm and generates a biasing force of about 5 kN. Device according to at least one of claims 1 to 4, characterized in that a stop (8) of the jaw foot or the spring end at the lower edge of Gleitstuhlausnehmung the vertical path of the spring element (3) limited to about 3 mm. Device according to at least one of claims 1 to 5, characterized in that the symmetrical arrangement of the two spring elements allows a longitudinal division (9) of the Gleitstuhlplatte in the region of constructionally caused bottlenecks in the tongue device. Device according to at least one of claims 1 to 6, characterized in that the torsional resistance of the rail fastening by arranging track internal rib sections (10) at the lying in the longitudinal direction side edges of the Gleitstuhlplatte corresponds to the ratios of a K or KS attachment. Device according to at least one of claims 1 to 7, characterized in that in a slit-shaped recess arranged symmetrically to Gleitstuhlängsachse the tongue rolling device consisting of frame (11) and on axles (12) mounted rollers (13) is mounted such that the outer side facing the frame end the tongue roller device undercuts the slide chair and is thus held down (14) and the inner track frame end is frictionally clamped eg by a spring (15) with the Gleitstuhlplatte and positively fixed via a rack (16) in the transverse direction of the slide chair plate. Device according to at least one of claims 1 to 8, that in a correspondingly shaped recess (17) of the base plate is latched or clamped within the slot-shaped recess of the slide chair, an insert part (18), that the counterpart forms the tooth bar of the frame of the tongue rolling device. Apparatus according to claim 9, characterized in that the insert part (18) is made of plastic. Device according to at least one of claims 1 to 10, characterized in that the longitudinal sides of the frame (11) of the reel rolling device axle bores (19) have such that the use of only one basic frame type at each point of the tongue device by the variable assignment of the frame (11) Rolls (13) allows. Device according to at least one of claims 1 to 10, characterized in that on the rack (15) of the frame (10) is adjusted in the transverse direction of the track so that between the foot of the adjacent tongue and the first roller creates a distance of up to 2 mm. Device according to at least one of claims 1 to 12, characterized in that the tongue rolling devices in such Spaced apart from each other, taking into account the constructively provided lifting height (20) of the tongue, the vertical deflection of the tongue by its own weight, the individual component tolerances and the permissible longitudinal height error of the jaw rails a minimum distance between tongue of the tongue and the sliding surface of Gleitstuhlplatte of 1 mm guaranteed.

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