Catching insert for a grooved rail, methods for installing and using a catching insert

Abstract

A catching insert for a grooved rail solves the technical problem of the failure of the dosed material to reach the grooved rail for noise reduction, in such a way that a catching insert is longitudinally installed into the groove of the grooved rail. Preferably, the catching insert is made of a relatively soft material, e.g., plastic, so that it does not represent an obstacle to the passage of the wheels over it. It is also preferable that the catching strip of said insert is elastic, to achieve two effects: that the sides of said catching strip adapt to the sides of the groove of the grooved rail, and further, that the catching strip, after the passage of the wheels, returns to a shape identical or similar to the shape before the passage of the wheel over it, if deformation occurs due to the passage of the wheel.

Description

[0001] CATCHING INSERT FOR A GROOVED RAIL

[0002] Field of the invention

[0003] Transport; lubrication; railway traffic

[0004] Technical problem

[0005] In the process of transport on rails, increased friction occurs between the wheel flange and the rail in curves. This friction causes noise, vibrations, and excessive wear of both the rails and the wheels. The greatest problems occur in curves, where relative sliding between the rail and the wheel takes place, resulting in increased RF (Rail Friction) in the form of RFN (Rail Friction Noise) and intensive wear of both, rail and wheel, as well as intensive vibrations, which cause undesirable effects on the rails and wheels, and accelerate the destruction of the track base and the surroundings of the line. These issues are solved by various measures and also by supplying the rails / wheels with various composite materials and lubricants. In the case of a grooved rail, an additional problem arises in ensuring a quality transfer of the composite material or lubricant from rail by passing wheel because of the relatively large groove in comparison with the flange of the rail wheel, when the holes in the rail are used for dosing. Due to the depth and width of the groove, the dosed material does not reach the rail wheel; therefore, there is no spreading, and the dosed material freely flows and spreads along the bottom of the rail groove. For the dosed material to achieve its intended effect, it would have to fill the groove up to the wheel flange, which is unreasonable and sometimes impossible, for example, if the track is on an incline.

[0006] State of the art

[0007] State of the art presents various methods of dosing using devices and elements alongside the rail can be found, which, however, always have certain limitations. These include, for example, various rigid and massive metal dosing strips, which are mounted in the rail groove, and through whose slots pumps dose the lubricant into the rail so that the wheel flange picks up the lubricant only when a sufficient quantity has accumulated. Similar drawbacks are found in supply systems that use holes in the rail to dose the composite or lubricant. W02019032055 describes a flexible application element solving technical problem of improper application of application material in such a way that a flexible application element is attached to appropriate position onto grooved or vignole rail. Said flexible application element due to its form comprising the base and projections extending outward from said base, said projections preferably flexible, enables application material such as lubricant or material for increasing friction or special depositing materials or plurality thereof or combination thereof delivered from predetermined dosage point to reach a predetermined point on a rail wheel passing on said rail. This flexible application element is therefore used to spread or apply application material such as lubricant, or material for increasing friction or special depositing materials or plurality thereof or combination thereof, onto passing rail wheel.

[0008] CN110624756 discloses a channel rail lubricating oiling device. The device comprises a channel rail and a device main body, wherein bilaterally symmetrical telescopic chambers are arranged in the device main body; traveling devices are arranged in the telescopic chambers, each traveling device comprises a traveling wheel, and the traveling wheels are abutted with the left and right ends of the rail; adjusting chambers are arranged on the upper sides of the telescopic chambers, and oiling devices are arranged in the adjusting chambers. Paint brushes filled with a lubricant rotate to paint therail, and the pouring angle of the lubricant is adjustable, so that paint precision is improved. Besides, the supply of the lubricant is synchronous with the rotation of the paint brush, the lubricant is poured during operation of the oiling devices, and use waste of the lubricant is avoided. Moreover, the traveling devices are arranged in the device main body, the device main body automatically moves along the rail, and is not limited by the radian of the rail, and thus, oiling is continuous, energy-saving and efficient.

[0009] US2002166728 is directed to a device for distributing lubricants in grooved rails, particularly for railborne urban traffic. An elongated plate is provided which can be arranged in the groove of the rail and which is provided with cutouts at least along one longitudinal edge, but preferably along both longitudinal edges. The cutouts start at the longitudinal edge and are accordingly open-edged. The lubricant can be supplied to these cutouts. The open-edged cutouts of the plate are covered by a cover plate which is preferably constructed so as to be elastic at least in the covering area.

[0010] CZ29822 describes a tool for lubricating a grooved rail, which consists of an elongated hollow body, in the mounted state located at the bottom of the rail groove, with its longer side oriented in the direction of the rail groove. The interior of the lubricating tool is connected to a source of the lubricating medium via an inlet opening and is open to the ambient atmosphere via at least one outlet opening. The essence of the lubricating tool is that it consists of a base plate and a cover plate, with an intermediate piece placed between them. The base, the intermediate piece, and the cover plate are placed one above another, fit tightly together, and are interconnected. The base plate, the intermediate piece, and the cover plate have a cross-section in the form of an arc to fit onto the bottom surface of the groove of the grooved rail.

[0011] Description of new invention

[0012] A catching insert for a grooved rail solves the technical problem of the failure of the dosed material to reach the grooved rail for noise reduction, in such a way that a catching insert is longitudinally installed in the groove of the grooved rail. Preferably, the catching insert is made of a relatively soft material, e.g., plastic, so that it does not represent an obstacle to the passage of the wheels over it. It is also preferable that the catching strip of the mentioned insert is elastic to achieve two effects: that the sides of said catching strip adapt to the sides of the groove of the grooved rail, and further, that the catching strip, after the passage of the wheels, returns to the shape identical or similar to the shape before the passage of the wheel over it, if deformation occurs due to the wheel passing.

[0013] For the purpose of this application, the word “lubricant” describes an agent intended for reducing the coefficient of friction, or increasing the coefficient of friction, or an agent that reduces noise between the rolling of the wheel and the contact of the wheel or its part with the rail.

[0014] One of the purposes of the subject according to the invention is also to reduce lubricant consumption.

[0015] The catching insert essentially acts as a sealing element, which prevents the lubricant from slipping to the bottom of the groove of the grooved rail, but rather retains the lubricant at a level near the wheel. Thus, a smaller amount of lubricant is required to achieve a similar effect.

[0016] Since it is difficult to predetermine the necessary depth at which the catching strip should be positioned, in an embodiment, the catching strip is attached in the groove of the grooved rail by means of a fastening element comprising an elastic pin, preferably a spring pin. When a wheel passes over the longitudinally inserted catching strip, placed in the groove of the grooved rail, the wheel presses the catching strip downward. The catching strip yields, since it is attached by elastic pins, preferably spring pins, which allow the catching strip to move into the depth of the groove of the grooved rail exactly as much as is necessary for the wheel to pass. Because the sides of said catching strip are elastic, they adapt to a possible variable width of the groove of the grooved rail, since said groove width decreases toward the groove bottom.

[0017] In preferred embodiment, through the holes for the supply of lubricant, the required quantity of lubricant is supplied so that the lubricant is retained in the area between the catching strip (3) and the wheel.

[0018] The catching insert for a grooved rail (1) comprises a catching strip (3), longitudinally inserted into the groove of the grooved rail (1.1), which with its sides essentially bears against the sides of the groove of the grooved rail (1.1), and fastening means, which enable adjustment of the position of the catching strip (3).

[0019] The catching insert for a grooved rail (1) comprises a catching strip (3) made of an elastic material, so that it adapts to the shape of the wheel (2) of the rail vehicle when the wheel (2) passes over the catching strip (3), and so that the sides of the catching strip (3) adapt to the sides of the groove of the grooved rail (1.1) and essentially form a seal, which prevents the lubricant from slipping to the bottom of the groove of the grooved rail (1.1).

[0020] The catching insert for a grooved rail (1) further comprises fastening means including one or more fastening elements (4), each comprising one or more elastic pins, preferably spring pins (5).

[0021] The catching insert for a grooved rail (1) further comprises one or more elastic pins, preferably spring pins (5), which are fixed into a recess, preferably a bore (6) and / or hole, in the rail (1).

[0022] The catching insert for a grooved rail (1) further comprises one or more elastic pins, preferably spring pins (5), which are filled with a sealing material, such as rubber, to prevent the penetration of water under the head of the rail. A method for installing a catching insert for a grooved rail (1), comprising forming recesses, preferably bores (6) and / or holes, in the groove of the grooved rail (1.1), into which, by means of fastening means, the catching strip (3) is fastened.

[0023] For purposes of these specifications words holes or bores in addition to their usual meaning refer also to general openings in the material capable of transporting lubricant or other fluids through construction such as rail or similar.

[0024] A method for installing a catching insert for a grooved rail (1), further comprising fastening the catching strip (3) with fastening means in such a way that spring pins (5) are inserted or pressed into the recesses, preferably bores (6) and / or holes, to a predetermined depth, and that the catching strip (3) is fixed onto these spring pins (5) by means of a fastening element (4).

[0025] A method for installing a catching insert for a grooved rail (1) further comprises filling the spring pin (5) with a sealing material, preferably rubber.

[0026] According to one of the embodiments, the subject of the presented invention is a catching insert for a grooved rail (1), which, due to its shape and mode of attachment, continuously adapts to the contact level — depth of the wheels. The catching insert (1) comprises, in particular, a catching strip (3) and fastening means (4). In this way, a quick and efficient transfer of the material — lubricant from the grooved rail (1) by the rail wheels (2) and a further high-quality spreading / distribution process of the composite material — lubricant along the track over a greater distance are ensured.

[0027] According to an embodiment, the advantages of the method and the device lie particularly in the high-quality and efficient supply of the grooved rail (1) and rail wheels (2) with composite materials / lubricants against noise, vibrations, and wear, and in the efficient use of this consumable material due to the prevention of excessive expulsion of the material — lubricant.

[0028] The function of the catching insert is that it can adapt to the side of the groove at every point along its entire length in such a way that it retains all the dosed material / lubricant, which is dosed through holes into the groove of the rail (1) at the level of the outer edges of the flanges of the rail wheels (2). The catching insert (1) has a special shape and mode of fastening, which allow it to adapt and sink into the depth of the groove to such a level that it always maintains contact with the rail wheels (2) and at the same time seals the side of the groove on both sides. Even when the height of the rail head decreases due to wear, the grooved catching insert (1) correspondingly deepens under the pressure of the rail wheels (2) in the groove of the rail (1). In the embodiment, due to the choice of material, which is relatively soft and / or elastic, it does not present a significant risk of causing damage either to the wheel (2) or to the rail (1).

[0029] The essence of the invention is explained in greater detail below by describing an embodiment and with the attached drawings, which form part of this patent application, and in which:

[0030] Figure 1 shows a grooved rail (1), a groove of the grooved rail (1.1), a wheel of the rail vehicle (2), a catching strip (3), a fastening element (4), an elastic pin, preferably spring pin (5), a bore (6) and / or hole, and a hole for lubricant supply (7).

[0031] Figure 2 shows a catching strip (3), a fastening element (4), a nut of the fastening element (4.1), and an elastic pin, preferably spring pin (5).

[0032] Figure 3 shows a grooved rail (1), a groove of the grooved rail (1.1), a wheel of the rail vehicle (2), a catching strip (3), a fastening element (4), and an elastic pin, preferably spring pin (5).

[0033] Figure 4 shows a comparison between a less worn head of the grooved rail (Figure 4a) and a more worn head of the grooved rail (Figure 4b), and the catching strip (3) in two different positions — more elevated above the bottom of the groove (1.1) of the grooved rail in Figure 4a, and more lowered toward the bottom of the groove (1.1) of the grooved rail. Also visible is the deformation of the catching strip (3) under the load of the rail vehicle wheel (2).

[0034] The catching insert (3) is longitudinally fixed in the rail (1) (Figure 3). In the embodiment, it is made of a relatively soft material, which under a certain pressure has the ability to deform, compress, etc., e.g., plastic, and is preferably also elastic so that after deformation under pressure, it returns to its original shape. A fastening element (4) with an integrated spring pin

[0035] (5) is fixedly mounted into it, ensuring simple and stable fastening of the strip (3) into the bore

[0036] (6) and / or hole in the rail (1). The interior of the spring pin (5) is filled with a filler, e.g., rubber, or another sealing material, which prevents the penetration of water under the head of the rail (1). In the embodiment, bores (6) and / or holes are made in the rail groove (1) using a template, and into them, spring pins (5), which are on the catching strip (3), are inserted or pressed to a level slightly below the anticipated depth of the wheel flange at the installation location. The final position — depth of the catching strip (3) — is set by the rail wheels (2) as they pass over the strip (3). The dosed material / lubricant, which enters the rail groove (1) through the hole (7), now relatively quickly reaches and supplies the flange of the wheel (2) on both the outer and inner sides, since it cannot flow into the depth of the rail groove (1). The catching insert (3) permanently adapts to the contact point of the wheel (2) depending on the shape of the wheels and the wear of the rail (1).

Claims

CLAIMS1. A catching insert for a grooved rail (1) comprising a catching strip (3), longitudinally inserted into the groove of the grooved rail (1.1), which with its sides essentially bears against the sides of the groove of the grooved rail (1.1), and fastening means enabling adjustment of the position of the catching strip (3).

2. The catching insert for a grooved rail (1) according to claim 1, wherein the catching strip (3) is made of an elastic material so that it adapts to the shape of the wheel (2) of the rail vehicle when the wheel (2) passes over the catching strip (3), and so that the sides of the catching strip (3) adapt to the sides of the groove of the grooved rail (1.1), and essentially form a seal that prevents the lubricant located between the wheel (2) of the rail vehicle and the catching strip (3) from slipping to the bottom of the groove of the grooved rail (1.1).

3. The catching insert for a grooved rail (1) according to any of the preceding claims, wherein the catching strip (3) further comprises fastening means comprising one or more fastening elements (4), each comprising one or more elastic pins, preferably spring pins (5).

4. The catching insert for a grooved rail (1) according to any of the preceding claims, wherein the catching strip (3) further comprises one or more elastic pins, preferably spring pins (5), which are fastened into a recess, preferably a bore (6) and / or hole, in the rail (1).

5. The catching insert for a grooved rail (1) according to any of the preceding claims, wherein said one or more elastic pins, preferably spring pins (5), are filled with a sealing material, for example rubber, to prevent the penetration of water under the head of the rail.

6. A method for installing a catching insert for a grooved rail (1) according to any of the preceding claims, comprising forming recesses, preferably bores (6) and / or holes, in the groove of the grooved rail (1.1), into which, by means of fastening means, the catching strip (3) is fastened.

7. A method for installing a catching insert for a grooved rail (1), further comprising fastening the catching strip (3) with fastening means in such a way that spring pins (5) are inserted or pressed into the recesses, preferably bores (6) and / or holes, to a predetermined depth, and the catching strip (3) is fastened onto these spring pins (5) by means of a fastening element (4).

8. The method for installing a catching insert for a grooved rail (1) according to claim 7, further comprising filling the spring pin (5) with a sealing material, preferably rubber.

9. A method of using a catching insert for a grooved rail (1) according to any of claims 1 to 5, comprising the following steps:- installing the catching strip (3) into the groove of the grooved rail (1.1) by means of fastening elements comprising spring pins (5);- adjusting the depth of the position of the catching strip (3) so that the wheel (2) of the rail vehicle, upon passing, presses the catching strip (3), which yields in the direction toward the bottom of the groove of the grooved rail (1.1);- wherein lubricant is applied onto the surface of the catching strip (3) through the lubricant application holes (7).

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