JPH0247401A - Apparatus for tying railroad rail - Google Patents

Abstract

PURPOSE: To conduct preassembling of all fastening parts by enabling a clip leaf springs to assume standby positions to which they are rotated respectively 180 deg. and 90 deg. from an operative position of retaining a rail. CONSTITUTION: A clip 10 can assume an operation position, in which it retains a rail R and a standby position to which it is rotated 180 deg. about a screw 40 from the operative position. Leaf springs 32, 34 can assume an operative position for fastening the rail R and a standby position to which they are rotated 90 deg. about the screw 40. In the standby position, the leaf springs 32, 34 are borne by the bearing surface 26 of the projection 24 of the clip 10. To rotate the clip 10 and the leaf springs 32, 34, the screw 40 is unwound and refastened after rotation.

Description

DETAILED DESCRIPTION OF THE INVENTION [A field of application] The present invention relates to a device for fastening railway rails on sleepers or other track supports.

[Prior art] Document (French patent application No. FR-A-7520068
No. 3), a device for fastening railway rails on a support, such as a railway sleeper, a part of the boundary contour of which constitutes a support table part (A) for the railway rail (R), for example a bottom plate (2) placed between the railway rail and the support table part; a clip (10) made of electrically insulating material, with holes (36) drilled therein; a clip (10) comprising a main body (12) that presses against the rail and a wing portion (14) that presses against the rail; at least one leaf spring (32, 34) with a hole (38) drilled therein;
and a fastening member (40) passing through holes in the clip and the spring. In this known device, the support has a projecting shoulder (E) bounding an approximately vertical vertical bearing surface (4) and a top bearing surface (5) on each of the rail bearing table parts. on the side, and
The main body of the clip has a heel portion (18) delimiting two surfaces contacting the bearing table portion and the vertical bearing surface, respectively, and the leaf spring (32), on the one hand, part (14), on the other hand,
Squeeze the top bearing surface (5) of the shoulder (E) of the support.

This type of fastening device has the following essential advantages:

(I) Parts must be simple.

(11) Be efficient.

(III) Electrically isolated for railway rails and signal circuits.

[Problem to be Solved by the Invention] However, this type of fastening device does not allow the railway rail to be laid in place even if it is pre-assembled by means of screws or bolts passing through clips or leaf springs. However, it has the disadvantage that fastening parts cannot be installed on the sleepers. The fastening part is removed from the sleeper and is free from the railway rail on the table part, which has previously been in contact with the elastic bottom plate, or
Fasteners must be installed in position after the railway rail is laid on the sleepers.

OBJECTS OF THE INVENTION The object of the invention is, inter alia, to enable pre-assembly of all parts, and that this pre-assembly takes place either in the factory where the sleepers are manufactured or when the sleepers are installed in a predetermined position on the rail. The goal is to make it possible to implement the system before it is implemented.

Means for Solving the Problem To this end, a device for fastening railway rails according to the invention, namely a device of the type mentioned at the beginning of the detailed description of the invention, comprising a clip (10 ) is the support (T
) 2f in relation to! a retracted position or a standby position, oriented 180° in relation to the working position and the working body for holding or fastening the rail;
The bearing surface (26) for the leaf spring (32, 34) when the leaf spring is in the standby position in which the leaf spring is oriented at 90° in relation to the leaf spring activation/rail fastening position. protrusions (2) intended to act as
4) Provides a device for fastening railway rails, characterized in that the clip is provided on the top surface of the clip.

Other preferred embodiment features are as follows.

(a) The protrusion (24) is arranged along the side edge of the clip (Claim 4).

(b) The clip has an approximately vertical vertical stop surface (30) that defines the parked position of the leaf spring (32, 34).

(8) A vertical stop surface (30) is provided on a portion of the boundary contour of the extending finger (28) of the projection (Claim 5).

(d) The distance between the axis (X-X) of the tightening member (40) and the end of the rail flange (P) is greater than half the width of the leaf spring (32, 34) (Claim 2).

(f) The hole (36) of the clip has a horizontally long shape (Claim 6).

(to) In the retracted position, press the clip (1
0) presses on the one hand the tongue (3) on the bottom plate and on the other hand presses the top bearing surface (5) of the shoulder (E) of the support (T) (Claim 7) .

(g) The protrusion (24) in relation to the main body of the clip.
The protrusion height ()I, H') of ) is approximately equal to or slightly larger than the height (Hp) of the end of the rail flange (Claim 8).

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention will now be described in detail with reference to the accompanying drawings, which are shown by way of example only.

Railway rail R on a support consisting of concrete sleepers T
A device for fastening is shown in the accompanying drawings, particularly in FIG. Part of the boundary contour of this sleeper is the bearing table part A for the railway rail, which bearing table part is
It is generally inclined at an angle of 1.4 to 3 degrees towards the axis of symmetry of the track.

This device includes the following components:

■ Elastic bottom plate 2° located between the rail flange P and the sleepers. This bottom plate is a tongue projecting beyond the rail flange, with a width of 1 to 3 cm and a length The clip 10 has a tongue approximately equal in width to the clip 10 (parallel to the directional axis).

■ Clip 10°, preferably made of electrically insulating material and manufactured by injection casting or injection casting. Each clip includes a body portion 12 extending with wing portions 14. This body part holds the railway rail laterally and bears with its rear end against a substantially vertical vertical bearing surface 4 of a shoulder E formed in the sleeper, spaced from the railway rail; Further, this main body portion protrudes above the railway rail support table portion A.

The end of the clip facing towards the flange of the railway rail is usually referred to as the forward end, while the shoulder E
The other end of the clip facing in the direction of the rail shall be referred to as the rear end, and the other end of the clip extending in a direction perpendicular to the longitudinal direction of the railway rail shall be referred to as the lateral end. do. The front end and the rear end will also be referred to as longitudinal ends.

The length 1 of the main body 12 of the clip 10 provides a clearance, or clearance j, to facilitate assembly of the entire device, while also taking into account manufacturing tolerances of the various parts, and ensuring that the clip does not fit on the railway rail. If located between the flange and the shoulder E, the exact rail dimensions or track
It is set so that the gauge can be obtained.

The base of the main body portion 12 has a downwardly projecting portion to form a heel portion 18, and this heel portion is
The height is almost the same as that of the railway rail support table.
It's putting pressure on the sleeper T.

The front portion 22 of the clip, which faces in the direction of the railway rail in FIG. ing. The wing portion presses against the top of the railway rail flange, and the wing has a shape that matches the top of the flange.

The clip 10 is: - a legally manufactured protrusion;
The clip is generally vertical and has upwardly extending protrusions 24 at the lateral ends of the clip. A portion of the boundary contour of these projections constitutes four approximately horizontal bearing surfaces.

One of these protrusions extends with a finger 28, a portion of the bounding profile of which is a nearly vertical vertical stop surface and a vertical stop parallel to the forward and rearward ends of the clip. It forms a surface 30. The protrusion height of the vertical stop surface is determined by the height of the leaf spring (2) that forms part of the fastening device.
approximately equal to the sum of the thicknesses of the adjustable leaf springs 32, 34).

■ The longer bottom leaf spring 32 presses against the wing part 14 at one end and presses against the shoulder E of the sleeper T at the opposite end.
The top surface 5 of the two surfaces constituting the is pressed.

The leaf springs 32, 34 are arranged between the projections 24 on the clip, which act as guides for the leaf springs, and the projections 32, 34 are located between the projections 24 on the clip, one on each side of the clip. The distance between the parts is approximately equal to the width of the leaf spring.

This is shown in the plan view of FIG.

The leaf springs 32 and 34 and the body 12 of the clip each have a hole 38, 36. The hole 36 in the body has an oblong shape and the hole 38 in the leaf spring has a circular shape.

■ The tightening member may be a screw 40 with a collar 43 and a hexagonal head 42 as illustrated in FIG. 1, and this collar is preferably attached to the leaf springs 32 and 34
Distribute the clamping force against the This screw 40 is screwed into a socket or insert 44 fitted inside the sleeper T. As a variant, the tightening member 40 may be a bolt fixed to the sleeper, in which case the head 42 is replaced by a nut.

When the screw 40 is tightened, the leaf springs 32 and 34 are deflected. The respective deflection angles p of the main leaf spring 32 relative to the support, on the one hand on the top of the wing section 14 of the clip and on the other hand at the top 5 of the two faces formed by the shoulders E, are approximately equal to each other and deflection This corresponds to the inclination angle of the curve near the end of the soldered leaf spring. The clamping force exerted by the screw 40 is passed through the electrically insulating wing 14 to the support on the railway rail and to the shoulder E.
distributed among the supports on the top surface of.

In a preferred embodiment of the invention, leaf springs 32 and 3
The hole drilled at 4 is located at the center of the leaf spring.

The thickness h of the wings of the clip at the end of the railway rail R is selected such that the tongue 3 on the bottom plate remains at right angles to the central axis xx of the screw.

In addition, the following points need to be clarified:

(1) The holes bored in the leaf springs 32 and 34 are circular and have a diameter slightly larger than the diameter of the screw 40.

(2) The hole drilled in the clip 10 is horizontally long as shown in Fig. 2. In other words, this hole is basically a cylinder with two semicircles with a radius r slightly larger than the outer diameter of the screw. Contains. The centers of these semicircles are Ol and 02.

(3) The distance from the axis x--x of the screw 40 to the end of the railway rail flange is greater than the half width of the leaf spring 32.34.

(4) The substantially perpendicular surface 4 of the two surfaces constituting the shoulder E has a surface perpendicular to the surface of the railway rail support on the sleeper T, and In order to enable removal in the vertical direction without damaging or deforming the rail support table 4, the angle a is larger than the angle of inclination of the railway rail support table part.

(5) The substantially vertical bottom 20 of the corresponding side of the heel of the clip 10 forms the same angle a with the base of the heel. As a result, clip 1 by railway rail R
The lateral forces experienced by o are transmitted evenly between the surfaces in contact with shoulder E. A preferred value for angle a is approximately 4°. On the other hand, the top of the surface 21 is sloped towards the inside of the clip to facilitate the installation of the railway rail into position.

FIG. 3 is a partial sectional view corresponding to FIG. 1, but showing the parts of the fastening device according to the invention arranged in such a way that the positions to be occupied by the railway rail are free.

Clip 10 has been rotated 180° about the axis of screw 40.

The wing portion 14 of the clip 10 rests on the sloped top surface 5 of the shoulder E.

The substantially vertical front surface 22 of the clip presses against the surface 4 of the shoulder E.

The heel 18 of the clip presses against the protruding tongue 3 of the bottom plate 2.

In this way, the entire clip is raised and the wing section 14 rests on the shoulder section E.

The shoulder E is higher than the top edge of the railway rail by a height h. On the other hand, the rear heel portion 18 of the clip is raised by an amount equal to the thickness k of the protruding tongue portion 3 of the bottom plate.

If 1 is the length of the clip body measured perpendicular to the axis of the railway rail, or the substantial distance between the correct position of the railway rail end and the shoulder E of the sleeper, then this position , surfaces 4 and 22 have approximately the same slope.

The inclination of the clip during 180° rotation of the clip about the axis of the screw essentially depends on the amount of lift of the heel of the clip pressing against the tongue 3 of the bottom plate. The fastening device according to the invention therefore has the main advantage that the surface 20 can be approximately perpendicular to the bearing surface of the railway rail. On the other hand, the surface 22 of the clip is adapted to the surface 4 of the two surfaces of the shoulder E.

This means that in the retracted position, surface 20
This means that the distance between and surface 4 is approximately equal to the distance between the end of the railway rail flange and surface 4.

The clip thus rotated then completely frees the space occupied by the rail flange, making it possible to place the railway rail in position and, by lifting it, to remove it. becomes possible. However, in addition, the heel surfaces 20 and 21 of the clip 10 form guides that allow the railway rail to be placed correctly on the sleeper T.

Due to these advantages, the leaf springs 32 and 34 themselves are 9
0'' rotation, so that the longitudinal axis of the leaf spring is parallel to the railway rail, as shown in plan view in FIG.

Since the distance from the axis XX of the screw to the end of the railway rail is greater than the half width of the leaf springs 32 and 34, these leaf springs do not interfere with the placement or removal of the railway rail R.

To facilitate positioning the leaf spring parallel to the railway rail in the retracted position, the protrusion 2 of the clip
4 is dimensioned so as to form a parking plane at a height H above the body of the clip.

The dimensions H and Ho (Figure 3) are designed so that when leaf spring 32 is pressing against the top of the protrusion, leaf springs 32 and 34 are located in a plane perpendicular to the axis of the screw. . Furthermore, these dimensions H and Ho are the height H of the rail flange.
approximately equal to or slightly larger than p.

Finally, the finger 28 has a substantially vertical vertical stop surface 30.
I will provide a. This stop surface limits rotation of the leaf spring in a clockwise direction. The distance between the centers 0 and 02 of the cylindrical hole drilled in the clip 10 is as shown in FIGS. 3 and 4 when the clip is in the retracted position.
As shown, the screws 40 are selected so that they do not press against the shoulder E and the surfaces 4 and 22 are in contact.

The fastening devices simply described meet the objectives of the invention well.

By pre-assembly (performed, for example, in the factory where the sleeper is manufactured), all parts on the sleeper are attached according to FIGS. 3 and 4. It is sufficient to tighten the screw 40 slightly, thereby tightening the heel part 1.
0 is able to mount and hold the lower plate 2 on the sleeper T through the pressure applied to the tongue 3.

When the sleepers are installed on the trackbed with the parts of the fastening device preassembled in this way, the railway rail is laid in position between the guide surfaces 20. It is then sufficient for the screw 40 to be unscrewed slightly so that in a position parallel to the railway rail, the leaf spring is released from the pressure holding the part. Triangulation machine (trigonometry)
The leaf spring can be rotated by 90” as in
Then, the leaf spring is lowered by the height H between the protruding parts of the clip 10. There is then nothing to prevent the clip 10 from being lifted by an amount slightly greater than the thickness Hp of the edge of the railway rail, which thickness Hp is approximately equal to the height H, then consisting of the clip and the leaf spring. The assembly is rotated to position it in the working position. Tightening the screw 40 or equivalent ramp means serves to actuate the fastening means as shown in FIG.

All these operations are performed without removing any parts of the fastening device. In particular, it is carried out without unscrewing the screw 40 beyond a distance slightly greater than the height H of the protrusion on the clip. This is a most important advantage, especially if the clamping means are screws screwed into the insert. The fact that the screw remains connected to the insert at all times prevents water and spray debris from entering.

[Brief explanation of the drawing]

1 is a partial sectional view of the device according to the invention in a plane perpendicular to the longitudinal axis of a railway rail; FIG. FIG. 2 is a plan view of the device according to the invention with the fastening screw removed; FIG. 3 is a view similar to FIG. 1, showing the fastening device in a retracted position. FIG. 4 is a plan view corresponding to the position shown in FIG. 3. 2... Bottom plate 3... Tongue 4... Vertical bearing surface 5... Top bearing surface 10.
...Clip 12...Body part 14...Wing part 18...Heel part 20...Vertical support surface or guide 21...Face 22...Front part or front surface 24...Protrusion part 26...Supporting surface 28...
- Finger 30...(vertical) stop surface 32...plate spring 34...plate spring 36...
Hole 38... Hole 40... Tightening member (for example, screw) 42... Top 43... Collar 44...
Insert A...Support table part E...Shoulder part
P...Rail flange R...Railway rail T...Support (e.g. sleepers)

Claims (1)

[Scope of Claims] 1. A device for fastening a railway rail on a support, such as a railway sleeper, for example a sleeper, whose boundary contour part forms a support table part (A) for the railway rail (R). Support (T)
and a bottom plate (
2), a clip (10) made of an electrically insulating material and comprising a main body (12) with a hole (36) and a wing part (14) that presses against the rail; ) and at least one leaf spring (
32, 34) and a tightening member (40) passing through the holes of the clip and the spring.
and a device for fastening railway rails, wherein a projecting shoulder (E) delimiting the vertical bearing surface (4) and the top bearing surface (5) is attached to each of the rail bearing table parts. On the side, the body part of the clip has a heel part (18) which the support is provided with and which delimits two surfaces contacting respectively the bearing table part and the vertical bearing surface, and the body part of the clip has 32) in a device for fastening railway rails, which presses on the one hand the wing part (14) of the clip and on the other hand the top bearing surface (5) of the shoulder (E) of the support, The clip (10) can be retracted in two positions with respect to the support (T), namely an operative position for holding or fastening the rail and an oriented 180° in relation to the operative position. can take a standby position or standby position,
The bearing surface (26) for the leaf spring (32, 34) when the leaf spring is in the standby position in which the leaf spring is oriented at 90° in relation to the leaf spring actuation/rail fastening position. protrusions (2) intended to act as
4) A device for fastening railway rails, characterized in that the clip is provided with: on the top surface of the clip. 2. Claim 1 characterized in that the distance between the axis (X-X) of the clamping member (40) and the end of the rail flange (P) is greater than half the width of the leaf spring (32, 34). The device described. 3. Device according to claim 1, characterized in that the clip has a vertical stop surface (30) defining the parking position of the leaf springs (32, 34). 4. Device according to claim 1, characterized in that the projections (24) are arranged along the lateral edges of the clip. 5. Device according to claim 1, characterized in that the vertical stop surface (30) is bounded by an extending finger (28) of the projection. 6. Device according to claim 1, characterized in that the hole (38) of the clip has an oblong shape. 7 In the retracted position, attach the clip (10
) presses on the one hand the tongue (3) on the bottom plate;
2. Device according to claim 1, characterized in that, on the other hand, it bears against the top bearing surface (5) of the shoulder (E) of the support (T). 8 Projection (24) in relation to the main body of the clip
2. Device according to claim 1, characterized in that the protruding height (H, H') of is approximately equal to or slightly greater than the height (Hp) of the end of the rail flange. 9 a protrusion (24) is located on each side of the axis (X-X) of the clamping member, the heights (H, H') of the protrusion being different in relation to the top surface of the clip; Claim characterized in that the height difference is selected such that in the retracted position the leaf springs (32, 34) are approximately perpendicular to the axis (X-X) of the clamping member. The device according to item 8. 10. Device according to claim 1, characterized in that the vertical bearing surface (4) is formed at an angle a to the normal of the bearing table part of the support. 11 Vertical support surface (20) of the heel (18) of the clip
11. Device according to any one of the preceding claims, characterized in that the clip is inclined outwardly of the clip and is formed at an angle a with respect to the normal of the base of the heel part of the clip. 12. The vertical bearing surface (20) of the heel of the clip is located at the bottom of the rear surface of the heel, the top of the rear surface being inclined towards the center of the clip. Device. 13 the height of the stop surface (30) is equal to the thickness of the leaf spring (32) or the sum of the thicknesses of the leaf springs (32, 34);
4. Device according to claim 3, characterized in that they are at least equal. 14. Device according to any one of claims 1 to 13, characterized in that the tightening member (40) has a thread that cooperates with an insert (44) embedded in the support. .