Points component, points and production method for a points component with a heating device

Abstract

Switch component, designed as a guide device, such as a tongue device (5), a frog or the like, with at least an upper part (1) and a lower part (2), wherein the upper part and the lower part abut each other with at least one contact surface (3) and wherein the upper part and the lower part are connected to each other, wherein at least one inner cavity (10) is formed between the upper part (1) and the lower part (2), which cavity (10) has at least one connecting opening (12) open to the outside.

Description

[0001] The invention relates to a switch component designed as a guide device, for example a switch tongue device, a frog, or the like, having an upper part and a lower part, wherein the upper part and the lower part abut one another with at least one contact surface, and wherein the upper part and the lower part are connected to one another. Such a switch component can be found in DE 101 24 624 A1, which describes a so-called sandwich construction. WO 2013 / 120487 A1 further describes a switch component according to the preamble of claim 1. The invention further relates to a manufacturing method for a switch component with a heating device.

[0002] Further prior art deals with heat exchanger units for heating systems and surfaces, with so-called point heaters, for example, EP 2 142 704 B1. Accordingly, mini-channels are arranged in a planar arrangement within the component to be heated to transfer heat to the component. The teaching of EP 2 142 704 B1 obviously seeks a solution for the direct heating of point components, albeit of non-leading point components. Sliding chairs are mentioned as an application. Sliding chairs do not guide the train, but at most parts of a point. EP 2 142 704 B1 also focuses on special components to be installed in sleeper compartments. Thus, indirect heating of leading parts is always proposed, not direct heating.

[0003] WO 2011 / 141 550 A1 discloses a track system with a tongue device. A block extends the entire length of the tongue device, from which a tongue bed is machined. The block is connected to supports and elevated on a base plate via the supports. A heater, such as a heating rod, is provided in an interior space formed by the supports, the base plate, and the underside of the block.

[0004] For this description, guiding parts or guide devices are understood to mean elongated switch components, such as switch tongues or the like, which have a longitudinal direction consistent with the train's direction of travel. The invention also concerns heating a significant area of ​​a switch component in this direction of travel. Consequently, a switch component of this type must also have a certain dimension along this direction of travel.

[0005] However, the direct insertion of mini-channels according to EP 2 142 704 B1, for example, as bores, into any component of the switch construction, is considered too complex, even according to DE 10 2012 108 586 B3. EP 2 142 704 B1 itself also points to deformations that occur during direct heating. Heat exchanger units according to EP 2 142 704 B1 are mounted at the support points on the switch with deformable elements 15.

[0006] Therefore, the use of separately manufactured heat exchangers in contact with switch components is generally being improved, see DE 10 2012 108 686 B3. There, the teaching of the above-mentioned EP 2 142 704 B1 (also WO 2008 / 131732 A1) is considered problematic. The high manufacturing costs of individually installed mini-channels are considered a disadvantage. Furthermore, bores can only be made linearly, limiting design freedom.

[0007] The present invention is based on the object of developing a cost-effective manufacturing process that provides the most direct heating possible for leading switch components.

[0008] This object is achieved by a switch component having the characterising features of claim 1 in conjunction with its preamble features, and further by a manufacturing method according to claim 10.

[0009] Further advantageous embodiments of the invention form the subject matter of further claims.

[0010] According to the invention, at least one inner cavity is formed between the upper part and the lower part, which cavity has at least one outwardly open connection opening. The invention therefore uses the horizontally divided construction of switch components with guiding properties, which construction also includes at least the sandwich construction according to DE 10 124 624, in order to create and utilize at least one space for a heating device in the dividing surface available for processing. The invention generally relates to horizontally divided switch components, including those which, by their very design, have cavities extending in the longitudinal direction. Following the idea of ​​the invention, existing cavities inside the switch components can also be integrated into a heating network. This offers a variety of possibilities for production. The known limit of, for example, bores is thus overcome.

[0011] A major advantage of developing this horizontal cut surface for accommodating the heating device, or at least a roughly horizontal cut surface for achieving a heating function, is further seen in the fact that deformations that are to be feared during direct heating can be better controlled because, in preferred embodiments, different materials are used in a horizontal layer arrangement and subsequently joined as parts of the switch component. The switch component according to the invention is not limited to a division into two component layers arranged vertically one above the other. The invention expressly comprises a plate drawn in as a horizontal layer, which is advantageously drawn in as a heat exchanger plate, as the lower or a middle part.Material combinations that have proven advantageous during the invention include high-strength steel for the upper, guiding parts and structural steel for the lower heating area. The welded material combination allows for the control or limitation of deformation due to heating.

[0012] In embodiments according to the invention, particularly with structural steel and larger component volumes, deformations were kept within satisfactory limits.

[0013] According to a further embodiment of a switch component according to the invention, the outer surfaces of the switch component are at least thermally insulated. The thermal insulation function is particularly preferably taken into account when designing a vibration protection device.

[0014] A manufacturing method according to the invention comprises at least the following method steps: providing an upper and a lower part of a railway switch component with contact surfaces that can be turned towards one another and connected to one another, in particular in preparation for production according to the sandwich method, providing the at least one cavity in at least one of the contact surfaces or between contact surface regions with at least one connection opening to the outside, which leads out of the region of the contact surfaces, in order to integrate the cavity into a heating system or to provide a heating system with, for example, inlet and outlet access to the switch component.

[0015] According to one embodiment of the method according to the invention, the cavity and the connecting opening are manufactured in a single manufacturing process step, in particular by machining, in a surface of at least one of the parts. To illustrate the invention, an exemplary embodiment is shown in the figures described below. They show: Fig. 1 shows an embodiment of a lower part of a switch component according to the invention in a perspective view, Fig. 2 shows switch components of the first embodiment in a plan view with sections drawn transversely to the longitudinal direction of the rail and heating channels drawn in dashed lines, Fig. 3 shows the Fig. 2 Section AA with a movable tongue, the mobility of which must be secured against icing in the embodiment, and Fig. 4 in Fig. 2 registered section BB at the level of a return opening of the heating pipe through the switch component.

[0016] In the Figures 1 to 4 an embodiment of a switch component according to the invention is shown, here designed as a tongue device 5. The tongue device 5 has an upper part 1 and a lower part 2. The sections of the Figures 3 and 4 provide an insight into the vertical division into upper 1 and lower part 2. Figure 1 shows in perspective only the lower part with its contact surfaces 3 facing upwards.

[0017] The upper and lower parts are in contact with each other with the contact surfaces 3. From the side, you can see in the sections of the Figures 3 and 4 that the upper part and the lower part are welded together 4.

[0018] Between parts 1, 2, an inner cavity 10 is formed, in this case milled, below the tongue 6, approximately following the tongue 6 of the tongue device 5. The cavity 10 has two outwardly open connecting openings 12.1, 12.2. The connecting openings 12.1, 12.2 conduct heating medium into a supply line 11 and a return line 13 of a heating system. In addition to conventional heating systems, a geothermal system or a pipe connected to a solar collector can be considered as the heating system.

[0019] According to the invention, the upper part 1 and the lower part 2 can be connected to each other in a generally form-fitting, material-fitting or force-fitting manner as an alternative to welding.

[0020] In the illustrated embodiment, the cavity 10 has two spaces formed in the lower part 2 and connected by a connecting line 20 external to the switch. Alternatively, according to the invention, upper parts can be designed with cavities that are integrated into a heating system. The cavity can also be designed in both parts. A further part can also be incorporated into the vertical distribution for heating, essentially a heating layer as an intermediate layer, which is not shown anywhere.

[0021] The cavity 10 is in the Figure 1The lower part 2 shown is designed as upwardly open recesses extending as a long groove along the switch component in the direction of travel. Alternatively or additionally, cavities can be designed as short grooves transverse to the switch component. According to the invention, the contact surface 3 is adjacent to their edge or edges. The cavity 10 is shown as semi-tubular in the form of a channel. The cavity 10 is milled into the lower part 2 of the switch component with a semicircular cross-section. This offers advantages in terms of manufacturing and flow technology. Particularly in deflection or curved areas, the rounded groove at the bottom prevents edges and dead spaces. Further machining of the upper part 1 is not necessary.

[0022] According to the invention, the cavity 10 is a type of heating loop that directly carries a heatable fluid medium. The welds 4 provide sufficient sealing. In further embodiments not shown, seals are provided in the contact surface adjacent to the cavity. A manufacturing method according to the invention can be understood for the switch component 5 shown in the figures. Parts 1 and 2 are prepared for welding 4. Whether parts 1 and 2 have already been completely finished or not is irrelevant here. According to the exemplary embodiment shown, the cavity 10 is milled outwards in advance between the contact surface regions 3 with the two connecting openings 12. List of reference symbols:

[0023] 1upper part 2lower part 3contact surface 4weld seam 5tongue device 6Tone 10Cavity 11Supply 12Connection opening 13Return 14Line 20Connecting line

Claims

1. A shift element, executed as a guiding device, such as a tab device (5), a heart piece or the like, with at least one upper part ( 1) and one lower part (2), in which the upper part and the lower part contact each other with at least one contact face (3) and in which the upper part and the lower part are connected to each other, in which at least one inner cavity (10) is formed between the upper part (1) and the lower part (2), with this cavity (10) having at least one connection opening (12) that is open towards the outside, characterized in that the cavity (10) progresses in the manner of a heating loop in a contact area between the parts (1, 2) and that the cavity (10) is directly conducting a heatable fluid medium itself.

2. The shift element in accordance with claim 1, characterized in that the at least upper part (1) and the lower part (2) have a form-, material- or force-locking connection with each other, particularly preferred by welding (4).

3. The shift element in accordance with one of claims 1 or 2, characterized in that the cavity (10) is executed with a single space or with multiple spaces in the lower part (2), the upper part (1), or in both parts (1, 2).

4. The shift element in accordance with one of the preceding claims, characterized in that the cavity (10) in the lower part (2) is executed as an upwards open cutout or cutouts extending particularly preferentially as a long groove along the shift element and / or as a short groove or grooves crosswise to the shift element, at the edge or edges of which the contact face (3) is connected, or the contact faces (3) are connected.

5. The shift element in accordance with one of the preceding claims, characterized in that the cavity (10) is formed half-tube-shaped or channel-shaped in the contact face (3) of one of the parts (1, 2) that faces the respective other part (1, 2).

6. The shift element in accordance with claim 5, characterized in that the cavity (10) is milled into the part (1, 2) of the shift element (1) with a semi-circular cross-section.

7. The shift element in accordance with one of the preceding claims, characterized in that a seal is inserted adjacent to the cavity (10) in the contact face within the in the contact face that is further cut out for a sealing purpose and / or that the sealing of the cavity (10) is performed by the type of connection (4) between the parts (1, 2) of the shift element.

8. A shift with at least one shift element in accordance with one of the preceding claims.

9. The shift in accordance with claim 8, characterized in that the cavity (10) or the cavities of at least two shift elements in accordance with one of the claims 1 to 7 are connected to each other, in particular by a connection line (20) outside of the shift.

10. A production method for a for a shift element in accordance with one of claims 1 to 7, with a heating device, comprising at least the process steps: - provision of at least one at least semi-finished upper and at least one at least semi-finished lower part (1, 2) of the shift element with contact faces (3) that can be turned towards each other and connected to each other, in particular for preparing production according to the sandwich procedure, - production of a cavity (10) in at least one of the contact faces or between contact face areas with at least one connection opening (12, 13) to the outside that leads out of the area of the contact faces (3), in order to integrate the cavity (10) into a heating system or to give the heating system access into the shift element, in which the cavity is made at least of the connection opening itself.

11. The production method in accordance with claim 10, characterized in that the cavity (10) and the connection opening (12, 13) are not executed with identical spaces and the cavity (10) and the connection opening (12, 13) are produced in a single production procedure step, in particular by machining, in a surface of at least one of the parts.

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