DE1658309A1 - Flexible hanger bracket - Google Patents

Description

Patent attorney Dr, ing.

IP. Ii. ! Hfefeüi & gsr

605 OffttB-bacti-fl.M.
Herrnstrasse 57

The BF Groodrich Company
Akron, Ohio, V.St.A.

Resilient hanger bracket

The invention relates to a device for anchoring a railroad track on a carrier and in particular on a device for railways on which high vehicle speeds occur, such as in local high-speed traffic and especially on electrically operated rail systems. Railways of this type require gauge and rail curvature tolerances that are much tighter than those for freight traffic and average operating tracks are. To make the rails effective in their place within the required tolerances in high-speed rail tracks As has long been known, the usual rail nails are unsuitable for keeping with a precise gauge. This is a result of the fact that the rail nails, although they are initially firmly drawn in, soon become underneath the repeated loading of the rail until a condition results in which the rail nail cannot more in direct contact with the rail in the unloaded State stand. In this case, no holding force counteracting rail displacement is developed, until a deviation of the rail occurs and the heads of the nails are in contact with the rail base flange come. This unchecked deviation often exceeds

009838/0535

the permissible tolerances for systems with precise gauge, that should be able to withstand high speeds.

One way to address the problem of oversized rail deviation has been to use a compliant one Attachment. For example, resilient devices have been used for rail fastenings on track systems abroad. In addition, the use of a damping cushion made of elastomers under a rail and / or the heads of the rail nails have been proposed.

The main purpose of the invention is to provide an improved fastening device for rails that have the force required to hold a track rail is flexibly transmitted by elastomer material in such a way that the holding force in the event of deviation and / or displacement the rail remains essentially the same.

Another purpose of the invention is to provide an improved fastening device as described in the previous paragraph purifies, to create, with which under normal = rail loads slight deviations of every horizontal movement The rail is resisted by the flexibility of the elastomer springs and under heavy loads excessive evasion is prevented by fixed stops.

Likewise, it is a purpose of the invention to provide an electrical Isolation of the rail from the fastening device without the need to create special isolators.

Other purposes and advantages of the invention will become apparent from the following description of the currently preferred embodiment in conjunction with the accompanying drawing, which forms a part of the application.

00 98 3 8/053 5 bad original

- * 3 -

In the drawing is

Pig. ΐ ^; a view of the currently "preferred embodiment of the invention in connection with a rail from above,.

I ¹ Xg ₆ 2 a partial side view and a partial section along the line. 2 - 2 in Fig. 1,

Pig. 3 is a partial view similar to the Pig. 2, the one shows another embodiment of the invention, and

Figure 4 is a view similar to Pig. 2 showing another embodiment of the invention.

When creating tracks for the inter-urban area Through traffic with high (speed it has proven to be useful for track stability, To use sleepers made of a material other than wood, for example concrete. That follows from the fact that a Loosening of the fastening screws or rail nails, that allows excessive deflection of the rails, is more common when the sleepers are made of wood. Therefore, the use of solid concrete or metal optic waves along with a facility for flexible fastening of the rail on the sleeper for recording visual vibrations preferred, 'the caused by loads in the vehicle, because the reduces the vibrations and / or other deviations of the rails, which the. Fixing device for 4 poker cores strive and thereby later breaks in the rails cause. The present invention permits resilient attachment by providing a mounting structure that with a flexible, elastomer support under the rail foot between this and a rigid ~

009838/0535

Part of the construction is provided that also performs the function exercising a threshold. In addition, the rail becomes resilient to displacement by fasteners prevented, which is against the upper '-feil of the rail foot flange Place it with sufficient force around the splint under the return action of the deformed elastomeric material to hold so that a rail movement causes a movement of the fastening means, which increases the return force Rail also serves to electrically isolate the rail from the sleeper plate portion of the construction. while the fastening means against the housing of the construction are electrically insulated by the same elastomeric material that is used to withstand the force-resisting rail displacement causes the entire rail to be electrically isolated very easily.

In FIGS. 1 and 2, which show the currently preferred embodiment of the invention, the rail 10 is seated with it her foot 10a on a flexible cushioning pad 11. The shock-absorbing pad sits between the rail 10 and the fixed threshold part 12 of the fastening device. This plate part 12 carries a pair of cylindrical, hollow spring housings 13 at a distance from one another, so that the housing heiderweixts the pad 11 sit. The housing and the threshold plate are advantageous from steel. Fixed angle 14, also advantageous Steel, are on the surface of the sleeper plate 12 and the outer surface of the spring housing 13 is welded and thus prevent a displacement of the housing 13 with respect to one another of plate 12 *

009838/0535 _BAD

Means are provided for a secure "anchoring of the sleeper plate 12 to the rail support or the sleeper 15, which advantageously consists of concrete. As shown, this anchoring comprises a threaded bolt 16, a washer 17 and a nut 18 at both ends of the preferred embodiment The unthreaded end of each bolt is embedded or otherwise firmly anchored in the concrete sleeper 15 so that the mounting structure is firmly anchored thereon by placing the plate 12 on the beam or sleeper 15 with the bolts through holes in Fixed stops 19, preferably right angled legs made of steel, which generally extend over the width of the housing 13, are attached to the plate 12 with one leg at such a vertical and lateral distance from the rail foot edge that a upper limit for lateral rail movement under severe Load is given. Instead of providing the stops 19 as separate parts, they can also be attached in such a way that the housing 13 is given a shape in which each housing side opposite the rail is provided with a vertically extending part which is a distance from the 3chienenfuflkante for the limitation

f,

the rail movement hajt. Incorporation of the stops in the housing side raises the need to provide special parts for this purpose. A pair of rigid arms 2 ($ _t, extending generally radially from each housing 13 aujjs , are provided as sole holders, each * arm stands at one end in

0 018 38 / OB35 bad original

touch the surface of the rail foot 10a in order to this exert a downward force, which holds the splint firmly on the damping pad. the horizontal frictional force created by the pressure of each arm is generated on the contact surface with the rail foot, also serves to keep the rail at a lateral distance to hold between the houses. The other end of each Arms 20 for each housing 13 is detachably seated at one end of a shaft 21 which is attached to the housing by means of a preventing rotation between the arm and the vie lie Facility protrudes. In the preferred embodiment, each arm has a hexagonal bore near one end, with which it can be pushed over a hexagonal end 21a at each end of the well 21 »v / ie in the exemplary embodiment As shown, the shaft is a hollow tube with a substantially cylindrical central portion and with ends 14a which are forged into the aforementioned hexagons. However, the invention is not limited to: limited special type of attachment of the arms to the shaft, for example .können the arms 20 from a Pieces with them have existing knobs of polygonal cross-section, which protrude from the sides and from accordingly shaped openings are received in the ends of the shaft. Conversely, the shaft and arms can have keyways and wedges or other commonly used means. '

Each pair of arms 20 is held in one of the rail Position rotated by elastomer spring material 22, which is between the shaft 21 and the surrounding housing part is appropriate. In the preferred embodiment, the

0098 3 8/0535

Surface of the blastomer material 22, which the cylindrical 'i'eil of the shaft surrounds it, firmly attached to it. The outer periphery of the elastomeric material 22 is solid with the inner surface of a thin, rigid, cylindrical shell 23 which has a pair of axially extending radial lugs 23a on its outer surface. The approaches 23 can be slid into corresponding, parallel Muten in the opening wall of the housing 13 grasp to to prevent the shell from rotating in relation to the housing. The elastomer spring material becomes advantageous first . firmly connected to the shell 23 and the ¥ elle 21, and then this unit is inserted into the housing bore by sliding it in the longitudinal direction, wherein the lugs 23a on the shell in the associated hats grasp in the housing 13.

Torsional prestressing of the elastomer material 22 of sufficient strength to prevent the aforementioned adjustment is necessary in order to hold the rail securely in place under normal loads from the vehicles. Therefore, the construction with the arms, the G-housings, the angles and the sleeper plate must be designed strong enough to be able to withstand the torsional loads which they experience from the elastomeric spring and the loads bending the rail. In the preferred embodiment, each elastomeric spring 22 can be rotated through an arc of 20-65 and withstand a torsional load of approximately 6000 inch pounds. first - ■ to put the rail between the housing 13, whereupon ^t "^{i; f}

009838 / 053S, _ßAD

_ ₈ _. 1653309

the elastomer springs 22 are twisted and then the arms are put on.

In particular, the flexible base 11 placed on the surface of the threshold plate 12 between the stops 19. The rail 10 is then on the "Pad placed and centered between the housing 13. One of the hexagonal shaft ends 21 a is with a (not shown) wrench grasped and um

™ a range of 20 to 65 ° away from the rail

^ 22 rotates, with which the elastomer spring material has a minimum

Bias of 5600 inch pounds (405 kg / cm) is imparted. While the shaft 21 is held in the turned preloading position with the key _A: one of the arms 20 is brought into engagement with the hexagonal part 21a at the other shaft end, the free end of the arm 20 being as close as possible to the surface of the rail foot IOa touched. The shaft 21 is then allowed to rotate under the restoring force of the spring material 22 until the arm 20 comes into contact with the surface of the rail foot 10a ^ and presses on it with a holding force, thus preventing further rotation of the shaft 21. changes. The key is then withdrawn from the free end of the shaft = 21 x and placed on the attached arm 20 in order to move it upwards. As a result, the free end of the shaft is rotated by an amount sufficient to allow an arm 20 to be placed on the free end of the shaft. Finally, the shaft is allowed to rotate again until both arms are on the rail foot 10a and exert a holding force on them. The procedure is followed for the elastomer enf ed er 22 for

0 0 9 8 3 ^8/0 5 3 5 BA0 original

the opposite side of the rail repeated Applying the specified torsional preload, the Ülastomer spring gives each arm 20 a holding force of approximately Exercise 200 kg / cm on the rail foot 10a.

Any turning or sideways movement of the attached rail causes movement of the arms 20 and any movement of these arms causes movement of the shaft 21 relative to the housings 15 · This causes the elastomer spring material to bend 22 in each housing and further, elastic ones Restoring forces in these, which the shaft in their strive to restore free position.

In the present embodiment, the wave plates 12, the housing 13, the bracket 14 and the stops 1 9 manufactured individually and by 'welding together However, the invention is not limited to this embodiment limited-, and the parts can be uniform, e.g. Bo by Gie.3en. Although the wave 21 is shown as one piece and hollow, the invention is not limited to this embodiment.

In ^ ¹ Ig. 3 shows a further embodiment in which the parts which correspond to those of the embodiment according to ^ 'ig. 1 and 2 are the same and have the same reference numerals. In this embodiment, the arms engaging the rail, denoted by 30, each have a downwardly projecting projection 30a which forms a corner catch with the part of the arm that engages the upper part of the rail foot. Each projection 30a protrudes at a distance from the adjacent edge of the rail foot downwards in order to limit the horizontal movement of the rails. The extension 30a 'replaces the stops 19 in FIG

0 09838 / 053S bathroom

special stops are not required for this version. Any serious horizontal adjustment of the rail that is sufficient to increase the friction of the holding force lifting the surface of the rail foot leaves the rail 10 in contact with the shoulder 30a on the rail side come in the direction of adjustment. The force exerted by the rail on the projection 30a is via the Poor. 30 transferred to the shaft 21 and of restoring forces consumed, which are produced by bending the elastomer spring 22. The horizontal line of action of the rail force on the approach 30a runs below the axis of the shaft 21. Therefore, every rail adjustment causes a moment of force on the axis of the shaft 21, which seeks to increase the contact force of the arm 30 on the surface of the rail foot.

This embodiment of the invention isolates the rail electrically from the threshold plate by means of the pad 11 and the blastomer spring 22. Touch in this way neither the arm 30 nor the extension 30a, the threshold plate or the housing 13, and correspondingly shaped Surfaces 21a on shaft 21 and arms 30a are designed so that they hold the arm 30 at a sufficient axial distance from the housings 13 to allow an electrical To prevent contact with the housings. In addition, a protection against short circuit by foreign bodies, the between the rail and the G-housings are effected by placing the elastomeric pads 11 on both sides is extended over the edge of the rail and vertically upwards over the top of each housing. Likewise can by extending part of the pad over the ends

0 09 838 / 063S ^ßAD

the housing 13 vertically downward between each end of the housing and each arm 30 protection against foreign objects can be effected, which short-circuit between the arms 20 and bring about the housing 1.3. The embodiment of the Fig. 3 thus eliminates the need for particular ones Stops for a rail adjustment and creates an improved, flexible rail fastening, which can be used for electrical track systems, without thatft-special insulators for isolating the fastening device against the rail are necessary.

In-Fig. 4 shows a further embodiment of the invention, in which the threshold plate 40 consists of one piece with the housings 40a, similar to the embodiment according to FIG on a flexible base 11 similar to the embodiment of FIG. 3 _; . .1 and 2 to be attached. The vertical sides 40b of the housing next to the rail serve as stops to limit a lateral adjustment of the rail under heavy loads from vehicles, similar to the fixed stops 19 in the design. 1 and 2, elastomeric spring material is also used in this embodiment to generate the necessary force to hold the rail in place, but the spring is constructed differently from that of the embodiment according to FIGS. In this embodiment, each G-housing 40a has a central longitudinal bore extending through it, which has a substantially right-angled cross-section and runs parallel to the rail. A rigid shaft 41, which is preferably hollow, and one

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has a uniform, more angular, advantageously square cross-section, goes through the center of the hole in each. the housing, strips of elastomer material 42 are placed in the longitudinal direction between the shaft ¹ 41 and the inner surface 40c of the housing bore, the elastomer material being deformed in cross section so that it exerts a generally radial pressure on the shaft. The ends of the shaft protrude outward from the ends of the housing bore and can have retaining arms for the rail that are detachably seated on it. For each shaft two arms 20 are provided, which at one end Ie j'e contain a non-circular hole, which inevitably grips the correspondingly shaped end of the shaft 41 with sliding fit Either to generate the necessary holding force is carried out in the same way as in the embodiment according to FIGS. 1 and 2. The arms are attached to the v / hurried ends in such a position that they protrude cantilevered parallel at a distance from one another and their free cortices the surface of the rail foot and apply pressure to it. A movement of the arms causes the elastomer en-material between the shaft and the inner circumference of the bore 40e to be compressed by the rotation of the shaft 41, = and elastic restoring forces are generated in the Peder material: which tend to return the shaft to its original position. ,

The embodiment of JPig. 4 is made in one piece with the threshold plate 40 and the housings 40a shown .. However, the invention is not limited to this.

restricts as the threshold plate, the housing, the. angle and stops made of individually manufactured and interconnected parts, e.g. similar by welding as the embodiments of FIGS. 1, 2 and 3, can exist. These and others, not specifically mentioned here, however, changes and adaptations resulting to those skilled in the art are considered to be part of the invention and can be run without affecting the scope of the There is departing from the invention which is to be considered limited only in the spirit and spirit of the appended claims will.

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Claims (1)

Expectations : 1. Resilient hanger bracket, characterized by a plate-shaped part which is to be attached to a sleeper (12, 40) and is located under a rail (10) with on both sides of the rail protruding parts, a pair of fixed housings (13; 40a) which are immovable on W are attached to each protruding part, where = each housing »parallel to the rail has a central bore penetrating it, when the rail (10) is supported by the plate-shaped part, rigid shafts (21; 41) passing through the central bores of the housings of at least one end of which extends outwardly from the housing, at least one piece of elastomeric material (22; 42) in each bore between the shaft and the housing through which it extends, the blastomeric material with the shaft and the walls of the bore, in which it sits, cooperates to yield a re ^ to prevent relative rotation between the parts, and a fixed arm (20) on an edde of the shaft so that relative rotation of the shaft with respect to the arm is prevented, which is generally radial from the shaft for the purpose of Contact with the surface of the rail foot (10a) protrudes, the rail on the plate-shaped part sits between the housings «. . 2. Rail holder according to ^ nspruch 1, characterized in that that the protruding end of the shaft (21; 41) and the arm, 00 98 33/053 5 BATH ORIGINAL (20) care to work with cooperating, matching and surfaces (21a) which can be separated from one another are provided, which in engagement with each other prevent rotation. 3 «Bchienenhalter according to claim 1 and 2, characterized _r that the bore te j ad em of the housing (13) is substantially circular and each shaft (21) having an axial central bore of substantially cylindrical shape, wherein the elastomeric material (22 j 42) is fastened in each bore and on the associated shaft in such a way that its rotation around its axis deforms the elastomer material without relative movement on the surface of the material against the shaft and the bore. 4. Sehienenhalter according to claim ^ "to 3, characterized in that that each of the files (21) with the elastomeric material connected and a solid »cylindrical shell (25) removable in each hole concentric to the axis the shaft is fitted, with the inner circumference of the bore the elastomer material (22) surrounds and firmly with it is united by a relative movement between them to prevent, and the flat surfaces of the outer circumference each sehale and the inner circumference of the bore into which she is set. · Work together to prevent a relative movement between the shell and the shell " 5 «Sehienenhalter nach Claim I ^ to 4» dadureh marked, that the G-egenflachen the shell '(23) and the bore ascial., a radially extending, radial gate protrusion (23a) on one part and a correspondingly shaped »aacial running, radial one! _ßA D 6. hanger bracket according to claim 1, characterized in that each ../eile (21) the part in the bore with polygonal Has cross-section and the elastomeric material (22) from a number of separate, elongated parts in the bore exists between the polygon surfaces of the shaft and the inner circumference of the bore are arranged so that there is a relative movement radially between the shaft and the hole is compressed. 7β hanger bracket according to claim 1, characterized in that that the threshold plate (12) with vertically extending, rigid surfaces (19) on opposite sides of the Area is provided for receiving the rails, the surfaces being spaced apart from the horizontal Limit adjustment of the rail (10). 8. Rail holder according to claim 1, characterized in that that each arm (50) has a downwardly projecting extension (30a) which is vertically close to the opposite one Edges of the rail foot (iüa) can extend, so that a horizontal adjustment of the rail (1ü) causes a contact with a cer attacks and the -traft the horizontal rail adjustment an elastic "resistance due to the bending of the" elastomer material (22) learns. 9ο hanger bracket in connection with a fastening device, which can hold the rail on a base, characterized by a rigid base plate (12), a pair of fixed housings (1'3), which are immovable on the plate at a sufficiently large lateral distance from one another are arranged to the rail (10) between 009838/0535 CONSTRUCTION ORIGINAL To hold oneself, a resilient haste omer enunt would lie (11) on the plate between the G-housings, a rail (10) with a rail foot (10a), which sits on the base (11) between the G-housings, each of which has a continuous, horizontal central bore with the ι axis parallel to the rail length, a central shaft (2 $) going through the bore, both ends of which protrude axially from the housing, a thin cylindrical uchale (23) in the bore, each housing with. Surfaces to rest on the bore surfaces to prevent relative rotation between them, elastomer spring material (22) between each shell and each shaft that is fixed to both the shaft and the shell. Ie is connected, whereby the blastomeric material is set to resist relative rotation between the shaft and the housing by flexing the elastomeric material, a pair of rigid arms (20) detachably seated on the opposite ends of each shaft such that a helative rotation between them is prevented, each arm having a free end that extends radially up to the surface of the rail foot and the elastomeric material is twisted under prestress in one direction, that the free end of each arm exerts a holding force on the rail . TO, hanger bracket according to claim 9, characterized in that that rigid stops are provided at a lateral distance on both sides of the rail to prevent its lateral movement to limit. 11. Sole age according to claim 9 and 10, characterized in that * that one-piece approaches with him 0098 3 8/0 531 _0A o are provided, which are normally Afestaasd by. u have rail and for a ÄttsctiLai? With this with excessive lateral verscMjetang zmi "& ®Tä.wet Simla ^BATH Blank page