The present invention relates to the field of railway rail fastening devices and more particularly to the field of fasteners by gripping the rail.
In the railway field, it is common to produce a rail fastening system that support by attachment systems where a rail foot the nip. These systems are supported on the upper face of the pad to grip the rail, directly or indirectly, against the crossmember.
Conventionally, the part that rests on the upper face of the pad is spring-like and fixed to the crosspiece by means of a proper fixing means, for example a lag bolt. The most commonly used are springs and leaf springs, to coils or coil.
As part of a railway rail fastening operation to the cross member, the vertical clamping of the rail base, it is also imperative that the rail is maintained fixed in position, avoiding any lateral translation. This holding in position is then conventionally operated via one or more stops, also fixed to the crosspiece by lag screw, and that block of hand rail foot and on the other thereof.

However, the position of the stop being dependent on the position of the tie screw, the rail position adjustment has long pressed a selection of suitable stops from a set of different sizes of coins.

To work around this problem, a fixing device using a stop equipped with ramps has been developed. This ramp mechanism keeps an edge of the stop in contact with the edge of the rail by releasing themselves from the position of the lag screw. However, under the action of the ramp, the edge of the stop is moved and changes the position of the spring bearing on the upper face of the rail. This modified position can then cause a deterioration of the quality of the rail pinch.

The present invention aims to overcome this drawback by providing a rail fastening system which maintains the pinch point of the foot of the rail during the transverse adjustment of maintaining the rail in position.

To this end, the invention relates to a rail fastening system by pinching the upper face of the rail, comprising:

- spring means adapted to bear on the upper face of the rail,

- means of securing a spring means to a rail support structure,

characterized in that the spring means is supported on a spring means of the adjusting device comprising:

- spring means of the support means, intended to be in contact with a side edge of the rail base, the spring means being mounted on the support means is fixed in translation with the spring means of the supporting means,

- anchoring means to the rail support structure,

- a means for adjusting the position of the support means of the spring means relative to the anchoring means.

The invention also relates to an implementation method of the rail mounting system according to the invention, characterized in that the method comprises at least:

- a pressurizing step of the anchoring means with the spring means of the supporting means by the spring means of the fastening means,

- a step of displacement of the setting means which via a cooperative interface causes the sliding of the support means of the spring means relative to the anchoring means.

The invention is best understood from the following description which refers to at least one preferred embodiment, given by way of non-limiting example, and explained with reference to the accompanying schematic drawings in which:

- Figure 1 is a schematic representation of a first exemplary fastening system of the invention in different position relative to the gripper rail,

- Figure 2 is the schematic representation of the first exemplary fastening system according to a first sectional plane perpendicular to the axis of the fixed rail,

- Figure 3 is the schematic representation of the first exemplary fastening system according to a second section plane perpendicular to the axis of the fixed rail,

- Figure 4 is the schematic representation of the first exemplary fastening system according to the second sectional plane perpendicular to the axis of the rail fixed illustrating a displacement means of the adjustment device,

- Figure 5 is the schematic representation of a bottom view of the adjustment device,

- Figure 6 is the schematic representation of a bottom view of the adjusting device showing a moving means of the adjustment device,

- Figure 7 is the schematic representation of the first exemplary fastening system according to a section perpendicular to the axis of the fixed rail,

- Figure 8 is a schematic representation of a second example of a fixing system according to a section perpendicular to the axis of the fixed rail,

- Figure 9 is the schematic representation of a third exemplary fastening system according to a section perpendicular to the axis of the fixed rail.

The invention relates to a rail fastening system 1 of 2 by pinching the upper face of the pad 2a of the rail 2 and lateral blocking of the rail 2, comprising:

- spring means 3 adapted to bear on the upper face of the pad 2a of the rail 2,

- a fixing means 5 of the spring means 3 with a support structure 4 of the rail 2,

characterized in that the spring means 3 is supported by a means 6 of the spring adjusting device 3 comprising:

- support means 7 of the spring means 3, intended to be in contact with a side edge of the pad 2a of the rail 2, the spring means 3 being mounted on the support 7 is fixed means in translation with the support means 7 of spring means 3,

- an anchoring means 8 to the supporting structure 4 of the rail 2,

- setting means 9 of the position of the support means 7 relative to the anchoring means 8.

It should be noted that the nip of the upper face of the pad 2a of the rail 2 can be operated through an intermediate part 10 positioned on the upper surface of the pad 2a. For example, this intermediate part 10 may be an electrical insulator and / or elastic against possible vibrations of the rail.

It should be noted that the anchoring means 8 comprises at least one interaction surface with a support structure 4 of the rail 2. This interaction surface comprises at least one terrain adapted to cooperate with the surface of the support structure 4 of the rail 2. This relief may be achieved, for example, by a protrusion or a dent at the interaction surface of the anchor means 8 which cooperates with the surface of the rail 4 of the support structure 2. with in this particular area of ​​interaction, the anchoring means 8 optimizes the fastening of the fastening system of the invention with the support structure 4 of the rail 2.

It should be noted that the supporting structure 4 of the rail 2 is a rigid structure which carries the rail 2 directly or indirectly through, e.g., an inch or wedge.

It should also be noted that various means of the inventive mounting system can be integrated into a single structure. Thus, the same structure may perform the functions of various means of the system of the invention. For example, the fastening means 5 of the spring means 3 and the anchoring means 8 can form the same structure. Similarly, the anchoring means 8 and the support structure 4 of the rail 2 may be constructed as one piece.

The support structure 4 of the rail 2 can be carried by a cross member or by any surface on which the rigid rail 2 fixed by the fastening system 1 of the invention, such as a crossbeam, a concrete surface, a metal saddle etc. The support structure 4 of the rail 2 may also be associated with an insulating sole and / or cushioning could be positioned between the underside of the rail 2 and a rigid surface of the support structure 4.

1 the rail fastening system 2 according to the invention thus involves a 6-adjusting device which allows, firstly, to ensure retention of the rail on its support by means of an anchoring means 8 and, secondly, maintaining assembled the spring means 3 with the support means 7 so that, when adjusting the support means 7, the spring means 3 remains held in position by the edge of the medium holder 7 to be in contact with the side edge of the pad 2a of the rail 2 directly or indirectly through, for example, an electrical insulator and / or elastic.

According to a construction feature, the support means 7 of the spring 3 and the anchoring means 8 are superimposed so that the support means 7 is mounted to bear, directly or indirectly, on an upper face of the anchoring means 8 .

According to an additional feature of construction, the spring means 7 of the support means 3 is slidably mounted on the anchoring means in a substantially horizontal plane and along an axis perpendicular to the edge of the system to be in contact with the rail 2, c that is to say the edge of the support means 7 intended to abut against the edge of the pad 2a of the rail 2.

The adjustment of the support means 7 of the spring means 3 being carried along a substantially horizontal axis, the adjustment device 6 then makes a sliding or slippage of the support means 7 of the spring 3 on the way to anchor 8 so as to achieve a movement of the support means 7 and the spring means 3 relative to the anchoring means 8.

According to a preferred feature of construction, the anchor means 8 interacts with the support means 7 in the form of a sliding rail. The anchoring means 8 has a portion forming a substantially rectilinear structure positioned on the support structure 4 of the rail 2. The support means 7 is then mounted sliding on this rectilinear portion of the anchor means 8.

In the adjustment device 6, the sliding or slipping of the support means 7 relative to the anchoring means 8 is controlled and adjusted via the adjusting means 9 which comprises respective interaction interfaces with the means support 7 of the spring 3 and the anchoring means 8.

Thus, in the fixation system 1 of the invention, the spring means 3 which cooperates with the adjustment device 6 does not interact with the support means 7 to be in contact against the side edge of the pad 2a of rail 2. by linking in movement the spring means 3 with the support means 7, the spring means 3 is in constant position relative to the edge of the system to be in contact with the rail 2, that is to say the edge of the support means 7 adapted to be in abutment against the edge of the pad 2a of the rail 2. Similarly, spring means supported by the point 3 on the upper face of the pad 2a of the rail 2 also remains constant irrespective the position adjustment of the support means 7 relative to the anchoring means 8 in the adjustment device 6.

According to a feature of construction, the spring means 3 and the support means 7 are assembled to be secured together in translation, at least along an axis perpendicular to the edge of the support means 7 for bearing against a side edge of the pad 2a the rail 2.

According to a specific feature of this construction, the spring means 3 and the support means 7 are assembled to be secured together in translation along several axes and rotationally fixed.

According to a specific construction, the spring means 3 is mounted fixed in translation with the carrier means 7.

According to another feature of construction of the invention, the fastening system 1 from the rail 2 is characterized in that the spring means 3 comprises at least:

- a first part realizing an interaction interface with the fixing means 5, so that the spring means 3 is held in contact with the support means 7 by the fastening means 5,

- a second part comprising a portion intended to interact with an upper face of the pad 2a of the rail 2, so that the interaction of attachment means 5 on the spring means 3 impacts the deformation of the second part of zero or negligible extent.

The spring means 3 is held in abutment against the support means 7 under the action of the fixing means 5. In a first example of construction, maintenance support can be operated by a crushing abutting of part of the spring means 3 against the upper surface of the support means 7 so that the spring means 3 and the support means 7 are completely secured. According to a particular construction of this first example, the first part of the spring means 3 cooperating with the surface of the support means 7 at a surface portion providing a structural complementarity. Such a structure of complementarity may be constructed in the form of a slot on the surface of the carrier means 7 of the spring 3 and intended to receive at least a portion of the first part of the spring means 3.

According to a second example of construction, maintenance support can be achieved by a controlled pressure of the fixing means 5 on the spring means 3, so that the spring 3 bears against the upper surface of the support means 7 without the first part of the spring means 3 is in abutment against the upper surface of the support means 7.

The second part of the spring means 3 which is adapted to be deformed, is deformed from an interaction point forming a fulcrum of the spring 3 on the support means 7 to which it is associated. In addition, the interaction point of the fastening means 5 on the spring means 3 does not affect the deformation of the second portion of the spring means 3 so that a change in position of the fastening means 5 with respect to the first part of the spring means 3 and / or with respect to the support means 7 under the control of the system of the invention does not affect the deformation of the second portion of the spring means 3 and therefore the action of the spring means 3 of the upper surface of the pad 2a of the rail 2.

According to one exemplary construction, the second part of the spring means 3 is made in the form of at least one arm having a first end is intended to bear against the upper surface of the pad 2a of the rail 2 and a second end sends a interaction point forming a fulcrum of the spring 3 on the support means 7 of the spring 3.

According to a construction feature of one non-limiting fastening system of the invention, the spring means 3 and the support means 7 are formed as a single element capable of fulfilling the proper functions of these two means 3, 7. the spring means 3 and the support means 7 may as well be merged into a single piece.

The adjustment of the support means 7 relative to the anchoring means 8 is made by means of adjusting means 9, which also allows to maintain in the adjusted position the support means 7 relative to the anchoring means 8 .

According to a preferred embodiment of the invention, the fastening means 5 is achieved by a lag screw and / or nut operating in a complementary threaded shaft. This fixing means 5 sets the spring means 3 under pressure by bringing it closer to the support structure 4 of the rail 2 together, a portion of the spring means 3 rests against the pad 2a of the rail 2 and ensures the nip of the shoe 2a the rail 2.

According to a particular construction, the five fastening means is mounted through at least the support means 7 of the spring means 3 and / or anchoring means 8. Thus, the support means 7 of the spring means 3 and the means anchor 8 each comprise an equivalent orifice or housing through which the fastening means 5 is arranged.

The fastening means 5 is fixed with the support structure 4 of the rail 2 and / or with the anchoring means 8. However, the spring means 3 and the support means 7 of the spring means 3 are mounted mobile in translation along an axis perpendicular to the axis of the attachment means 5. the spring means 3 and the support means 7 of the spring means 3 are thus removable and adjustable relative to the position of the fastening means 5.

According to a preferred construction, the support means 7 of the spring means 3 has an aperture 5 through which the fixing means which is elongated, for example oval or oblong. Such a shape allows an adjustment of the position of the support means 7 relative to the fixing means 5. According to a complementary construction feature, the spring means 3 also has a hole or an elongated housing, for oblong or oval, to allow its movement relative to the fixing means 5 in the same way for the adjustment of the support means 7 of the spring means 3.

According to a particular construction of the invention, the fastening means 5 of the spring means 3 is fixed with the support structure 4 of the rail 2 by means of the anchoring means 8. According to this feature, the anchoring means 8 is fixed to the support structure 4 of the rail 2. the fastening means 5 is then fixed on the anchoring means 8 and makes it possible to exert pressure of the spring means 3 and / or the support means 7 of the spring means 3 of the anchoring means 8.

The anchoring means 8 being intended to be fixedly mounted with the support structure 4 of the rail 2, the orifice through which is positioned 5 presents fastening means complementary in shape to the section of the fastening means 5.

According to a construction feature, the anchoring means 8 comprises at least one member 8a protruding from its lower face intended to be in contact with the surface of the support structure 4 of the rail 2. This element 8a projecting is intended to interact with the surface of the support structure 4 of the rail 2 so as to minimize or even prevent the sliding of the anchoring means 8 relative to the support structure 4 of the rail 2.

According to a specific construction, this element 8a projecting in the form of a bevelled tooth making an angle of about 30 ° with respect to a reference axis carried by a vertical. However, other embodiment of the element 8a projecting can be realized.

According to a particular embodiment, the support means 7 comprises at least one stop 7a forming an interface to interact with at least a portion of the spring means 3 and the drive moving in a substantially horizontal plane. This abutment interface 7a is then arranged to be in abutment against a portion of the spring means 3 situated oppositely to the part of the middle spring 3 bears on the rail 2. The interface forming a stop 7a of the support means 7 blocks the displacement of the spring means 3 by preventing its horizontal spacing from the rail 2. Preferably, this interface forming a stop 7a is disposed in a plane substantially parallel to the edge of the support means 7 of the spring means 3, intended to be in contact with a side edge of the pad 2a of the rail 2.

The adjustment means 9 interacts at respective interface with, on one hand, the support means 7 of the spring means 3 and, secondly, the anchoring means 8. The setting means 9 is arranged to achieve and / or maintain a spacing between two respective and dedicated portions of the support means 7 and 8 of the anchoring means.

According to a particular embodiment of the adjusting means 9, the latter comprises at least one interface forming an abutment 9a blocking the movement in a plane substantially horizontal to a first member of a list comprising the support means 7 and the means anchor 8, that is to say a first one of two elements which are the support means 7 and the anchoring means 8. Preferably, this interface stopper 9a of the adjusting means 9 is disposed in a plane substantially parallel to the edge of the support means 7 of the spring means 3, intended to be in contact with a side edge of the pad 2a of the rail 2.

According to a further embodiment feature of the adjusting means 9, the latter comprises a cooperation 9b interface with the second member of the list comprising the support means 7 and the anchor means 8, that is to say the second of the two elements that are the support means 7 and the anchor means 8.

According to a first method of construction, the interface 9b cooperation is effected by at least one ramp intended to cooperate with a complementary surface carried by the second element of the list comprising the support means 7 and the anchoring means 8. This ramp mechanism intervenes wherein the adjusting means 9 thus allows an adjustment of the position of the support means 7 relative to the anchoring means 8. the ramp mechanism also keeps a

determined position between the first of the two elements which interacts with the interface forming an abutment 9a of the adjusting means 9 and the second elements that interacts at the interface of cooperation 9b of the adjusting means 9 which form the ramp mechanism.

According to a feature of this first method of construction, the ramp 9b of the cooperation interface has a surface forming an angle at the interface of the adjusting means performing a stop 9a. According to a preferred construction, the surface of the Co interface is disposed in a plane which forms a non-zero angle and non-perpendicular to an axis perpendicular to the edge of the support means 7 to be in contact with a side edge of pad 2a of the rail 2.

According to an alternative feature of this first method of construction, the ramp 9b of the cooperation involves a flat surface interface having at least one guide rail 9c oriented in a direction forming a non-zero angle and non-perpendicular with an axis perpendicular to the edge of the support means 7 to be in contact with a side edge of the pad 2a of the rail 2. the guide rail 9c directs sliding ramp along which moves a second of the two elements that are the means support 7 and the anchor means 8, via a further interface.

According to a specific nature of this first method of construction, the ramp 9b of the cooperation interface comprises a plurality of 9c guide rails oriented parallel to each other carried by a planar surface to interact with a complementary interface carried by the second element of the list comprising supporting means 7 and the anchor means 8, this interaction allowing, on one hand, initially, a preliminary positioning of the adjusting means 9 relative to the support means 7 and, on the other hand, in a second step, an adjustment by sliding adjusting means 9 to operate the ramps of the cooperation 9b interface. During prepositioning, the arrangement of guide rails 9c setting means 9 with those of the

In such an arrangement, the cooperation 9b interface may have the shape of a planar grooved surface along the axis of displacement of the second element. The second element has then a complementary surface to the flat surface grooved cooperation 9b.

According to a second alternative mode of construction, 9b cooperative interface is performed by at least one thread oriented in a direction forming a non-zero angle and non-perpendicular to an axis perpendicular to the edge of the system 1 to be in contact with the rail 2, that is to say, with the edge of the support means 7 for bearing against the edge of the pad 2a of the rail 2. the interface of cooperation 9b of the adjusting means 9 is then arranged to interact with a threaded hole positioned on the second of the two elements that are the support means 7 and the anchor means 8.

The invention also relates to an application of the fastening system 1 from the rail 2 according to the invention to the railway field.

The invention also relates to a method of implementation of the attachment system 1 rail 2 according to the invention, this method comprising at least:

- a pressurizing step of anchoring means 8 with the support means 7 of the spring means 3 by the fastening means 5 of the spring means 3,

- a step of moving the adjustment means 9 which via a cooperative interface 9b causes the sliding of the support means 7 of the spring means 3 relative to the anchoring means 8.

Of course, the invention is not limited to the embodiments described and shown in the accompanying drawings. Modifications are possible, especially from the perspective of the constitution of various elements or by substituting technical equivalents, without departing from the scope of the invention.

CLAIMS

1. Fastening system (1) of rail (2) by pinching the upper face of the shoe (2a) of the rail (2) and the side rail locking mechanism (2), comprising:

- spring means (3) adapted to bear on the upper face of the shoe (2a) of the rail (2),

- fixing means (5) spring means (3) to a supporting structure (4) of the rail (2),

characterized in that the spring means (3) is supported on an adjustment device (6) of the spring means (3) comprising:

- support means (7) of the spring means (3), intended to be in contact with a side edge of the shoe (2a) of the rail (2), the spring means (3) being mounted on the support means (7 ) is fixed in translation with the support means (7) of the spring means (3),

- an anchoring means (8) to the support structure (4) of the rail (2),

- adjusting means (9) of the position of the support means (7) relative to the anchoring means (8).

2. Attachment system (1) rail (2) according to claim 1, characterized in that the fastening means (5) is mounted through at least the support means (7) of the spring means (3) and / or the anchoring means (8).

3. Fastening system (1) of rail (2) according to one of claims 1 or 2, characterized in that the spring means (3) comprises at least:

- a first part realizing an interaction interface with the securing means (5), so that the spring means (3) is held against the support means (7) with the fixation means (5),

- a second part comprising a portion intended to interact with an upper face of the shoe (2a) of the rail (2), so that the interaction of the attachment means (5) on the spring means (3) impacts the deformation of the second part of nil or negligible way.

4. Fastening system (1) of rail (2) according to one of the preceding claims, characterized in that the anchoring means (8) comprises at least one element (8a) protruding on its underside

intended to be in contact with the surface of the support structure (4) of the rail (2).

5. Fastening system (1) of rail (2) according to one of the preceding claims, characterized in that the support means (7) comprises at least one abutment interface (7a) for interacting with at least a portion of the spring means (3) and driving it in displacement in a substantially horizontal plane.

6. Fastening system (1) of rail (2) according to one of the preceding claims, characterized in that the support means (7) is mounted to bear, directly or indirectly, on an upper face of the anchoring means (8 ).

7. Fastening system (1) of rail (2) according to claim 6, characterized in that support means (7) of the spring means (3) is slidably mounted on the anchoring means in a substantially horizontal plane and in an axis perpendicular to the edge of the system (1) intended to be in contact with the rail (2), that is to say the edge of the support means (7) intended to abut against the edge of the pad (2a ) of the rail (2).

8. Fastening system (1) of rail (2) according to one of the preceding claims, characterized in that the adjusting means (9) comprises at least one interface forming an abutment (9a) blocking the movement in a plane substantially horizontal to a first element of a list comprising the support means (7) and the anchoring means (8).

9. Fastening system (1) rail (2) according to claim 8, characterized in that the adjusting means comprises a cooperative interface (9b) with the second member of the list comprising support means (7) and the anchoring means (8).

10. Fastening system (1) rail (2) according to claim 9, characterized in that the cooperation interface (9b) is formed by at least one ramp intended to cooperate with a complementary surface carried by the second element the list comprising support means (7) and the anchoring means (8).

11. Fastening system (1) rail (2) according to claim 10, characterized in that the ramp of the cooperation interface (9b) involves a flat surface bearing at least one guide rail (9c) oriented along a direction forming an angle non-zero and non-right angles with an axis perpendicular to the edge of the support means intended to be in contact with a side edge of the shoe (2a) of the rail (2).

12. Fastening system (1) rail (2) according to claim 9, characterized in that the cooperative interface is performed by at least one thread oriented in a direction forming a non-zero angle and non-perpendicular with axis perpendicular to the edge of the system to be in contact with the rail.

13. A method of implementation of the fastening system (1) of rail (2) according to one of claims 1 to 12, characterized in that the method comprises at least:

- a pressurizing step of the anchoring means (8) with the support means (7) of the spring means (3) by the fastening means (5) spring means (3),

- a step of moving the adjustment means (9) via a cooperative interface (9b) causes the sliding of the support means (7) of the spring means (3) relative to the anchoring means ( 8).