Elastic rail fastening system for railway turnout

Abstract

An elastic rail fastening system for a railway turnout, comprising: a supporting pad layer (10), a plurality of sets of spring clip fasteners (20), and a plurality of sets of anti-theft fasteners (30). The supporting pad layer (10) is laid on a sub-rail foundation, the upper surface of the supporting pad layer (10) is provided with a rail cant having a transverse slope of not less than 1:20, and a fit clearance which correspondingly deforms on the basis of the magnitude of an applied force is formed in the supporting pad layer (10). The plurality of sets of spring clip fasteners (20) are respectively arranged on two sides of a rail (40) and connected to the rail cant so as to respectively press the two sides of the rail (40) onto the rail cant; and each spring clip fastener (20) uses an anti-theft design. The plurality of sets of anti-theft fasteners (30) are respectively arranged on the two sides of the supporting pad layer (10) in the width direction thereof, pass through the portions of the supporting pad layer (10) on the corresponding sides and then extend into the sub-rail foundation, so that the supporting pad layer (10) and the sub-rail foundation can be detachably fixed; and each anti-theft fastener (30) uses an anti-theft design.

Description

Elastic fastener system for railway turnout

[0001] The present application claims priority to the Chinese patent application No. 202422299792.9, filed on September 20, 2024, and entitled "Elastic fastener system for railway turnout", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present utility model relates to the technical field of rail transit turnout, in particular to an elastic fastener system for railway turnout. BACKGROUND

[0003] The railway turnout is a key device for locomotives and vehicles to enter or cross another line, realize the turning of locomotives and vehicles, or cross the line, wherein the rail fastener system is an important component of the railway turnout. At present, the turnout rail fastener mainly adopts an elastic clamping method with a separate structure, such as a patent CN218812904U, a city rail turnout fastener system, CN218932739U, a turnout fastener system with a large amount of high adjustment, CN114790668A, a low-height damping fastener with a side stop, CN114687255A, a turnout rail fastener system without a cushion plate, CN216739072U, a large axle load turnout fastener, etc. Although the turnout area fastener system has various types, the fastener system is mainly composed of three components, i.e., a spring strip, an elastic base plate, and an anchoring connecting piece. In the existing domestic turnout fastener system, the spring strip mainly adopts an ω-shaped spring strip or an e-shaped spring strip, which utilizes the bending and torsional deformation of the spring strip material to realize the function of following the deformation of the rail and continuously clamping. The elastic base plate is made of rubber or other elastic bodies, which is the main component of the fastener system that directly supports the rail and uniformly transmits the vertical and horizontal loads to the foundation under the turnout sleeper. The anchoring connecting piece is used to fix the elastic base plate on the turnout sleeper, and facilitates installation and replacement, while requiring a certain lateral adjustment function.

[0004] The disadvantages of the prior art are as follows:

[0005] 1. The types of domestic turnout spring strips are relatively single, mainly existing in two forms of type II spring strips and type III spring strips. The type II spring strip has a larger shape, which cannot be installed at the narrow position of the turnout area, and only the type III spring strip or rigid fastener can be used. The rigid fastener affects the stiffness of the turnout area, and the local application of the type III spring strip increases the maintenance and repair workload. The type III spring strip is a boltless structure, which has high requirements for manufacturing and assembly precision, and cannot be adjusted in height, so the range of use is limited, and it is less used in national railways, and is mainly used in urban rail transit.

[0006] 2. Gauge blocks are commonly used in domestic turnout fastening systems. Their purpose is to adjust the track gauge and support distance laterally by using gauge blocks of varying thicknesses. While this structure was reasonable in the past, with the continuous improvement of turnout manufacturing technology and precision, the role of gauge blocks has become increasingly less important. The large number and variety of gauge blocks, coupled with frequent and difficult-to-detect installation errors on-site, increases the workload of later maintenance. Furthermore, because gauge blocks require space, there are often situations where elastic clips cannot be installed in confined spaces, indirectly increasing the length of the shim plate and raising manufacturing costs.

[0007] 3. In domestic turnout fastening systems, the iron pads often use a 1:40 rail bottom slope, which makes the rails prone to wear.

[0008] 4. The bolts, nuts and other fasteners in the fastening system are all hexagonal in shape and can be disassembled and assembled with conventional tools. In certain social environments, they are prone to theft, which seriously affects the safety of turnout use.

[0009] Utility Model Content

[0010] This utility model provides an elastic fastener system for railway turnouts to solve the technical problems of existing fastener systems, such as easy wear of the rail base slope, easy disassembly and theft of the fastener system, and weak vibration reduction and noise reduction effect.

[0011] The technical solution adopted in this utility model is as follows:

[0012] A railway turnout elastic fastener system includes: a support pad layer, multiple sets of elastic clip fasteners, and multiple sets of anti-theft fasteners; the support pad layer is laid on the rail foundation, and its upper surface has a rail base slope with a transverse slope of not less than 1:20 to support the rail and the elastic clip fasteners. The support pad layer has a fitting gap that deforms according to the magnitude of the stress to reduce vibration and noise; the multiple sets of elastic clip fasteners are respectively installed on both sides of the rail and connected to the rail base slope to press both sides of the rail onto the rail base slope, and each elastic clip fastener is also designed with anti-theft features to prevent it from being easily unlocked and loosened; the multiple sets of anti-theft fasteners are respectively installed on both sides of the support pad layer in the width direction to pass through the support pad layer on the corresponding side and extend into the rail foundation to detachably fix the support pad layer to the rail foundation, and each anti-theft fastener is also designed with anti-theft features to prevent it from being easily unlocked and loosened.

[0013] Furthermore, the support pad layer includes pads and under-slab pads laid in sequence; the upper surface of the pads has a rail bottom slope; the under-slab pads are used to lay and support the foundation under the rail, and the under-slab pads and pads are in a corrugated contact to form a fitting gap between them, thereby reducing vibration and noise.

[0014] Further, the upper surface of the under-plate cushion layer is provided with an upper wavy surface; the lower surface of the cushion plate is provided with a lower wavy surface matched with the upper wavy surface, and the concave-convex waves of the upper wavy surface and the lower wavy surface have a matching gap.

[0015] Further, the wavy lines of the upper wavy surface extend along the transverse direction, the longitudinal direction or the oblique direction of the under-plate cushion layer; the adjacent convex waves and concave waves of the upper wavy surface have the same or different amplitudes deviating from the center line.

[0016] Further, the cushion plate is an iron cushion plate made of steel material; the supporting cushion layer further comprises a track under-cushion layer arranged on the upper surface of the iron cushion plate, and the upper surface of the track under-cushion layer is a rail bottom slope.

[0017] Further, the anti-theft fastener comprises a frog bolt and a spring washer matched and arranged on the outer circle of the frog bolt; the screw rod of the frog bolt is used for vertically penetrating the supporting cushion layer and extending into the track under-base, so as to detachably fix the supporting cushion layer and the track under-base; the screw head of the frog bolt is specially shaped to prevent the frog bolt from being easily loosened by clamping the screw head with a conventional tool; and the spring washer is used for pressing the supporting cushion layer under the action of the screw head.

[0018] Further, the supporting cushion layer is further provided with a mounting through hole for penetrating the anti-theft fastener; and the railway turnout elastic fastener system further comprises a composite sleeve group arranged in the mounting through hole; the anti-theft fastener penetrates the composite sleeve group and extends into the track under-base, so as to prevent the anti-theft fastener from directly contacting and wearing the supporting cushion layer through the composite sleeve group, and to slightly adjust the supporting cushion layer along the width direction through the composite sleeve group.

[0019] Further, the composite sleeve group comprises a positioning sleeve and an eccentric sleeve arranged in sequence from inside to outside; the anti-theft fastener penetrates the positioning sleeve, so as to position the supporting cushion layer through the positioning sleeve; and the eccentric sleeve is specially shaped in a millimeter series eccentric manner, so as to slightly adjust the position of the composite cushion layer relative to the anti-theft fastener.

[0020] Further, the elastic strip fastener comprises a mounting seat fixed on the upper surface of the supporting cushion layer, a locking bolt vertically and threadedly connected in the mounting seat, an elastic strip sleeved on the locking bolt and the mounting seat, a flat washer and a locking nut arranged in sequence on the outer circle of the locking bolt; the locking nut is specially shaped to prevent the elastic strip fastener from being easily loosened by clamping the locking nut with a conventional tool; and the flat washer is used for pressing the elastic strip under the action of the locking nut arranged above the flat washer, so as to press the rail limb corresponding to the side of the steel rail on the rail bottom slope.

[0021] Further, the railway turnout elastic fastener system further comprises an adjusting piece arranged between the elastic strip fastener and the side edge of the steel rail rail limb, and the adjusting piece is specially shaped in a millimeter series thickness.

[0022] The utility model has the following beneficial effects:

[0023] In the prior art, the supporting cushion layer is elastically arranged to support the rail, and to elastically reduce vibration and noise, so as to reduce the influence of the vibration on the rail on the underlying foundation, reduce the stress on the rail and the underlying foundation, and prolong the service life of the elastic fastening system, reduce the maintenance and maintenance cost, and improve the system operation stability. In the utility model, the supporting cushion layer has a matching gap corresponding to the stress size on the basis of the existing arrangement, which can further strengthen the effect of the supporting cushion layer, further reduce vibration and noise, prolong the service life of the whole elastic fastening system, greatly reduce the maintenance and maintenance cost, and improve the system operation stability. On the other hand, the upper surface of the supporting cushion layer has a transverse slope not less than 1:20 of the rail bottom slope, and the rail is supported on the rail bottom slope. Through experiments and theoretical analysis, it is shown that the rail bottom slope not less than 1:20 has obvious effect on reducing rail wear and improving wheel-rail relationship, and different rail bottom slopes have great influence on the design of the fastening system. In addition, the elastic strip fastener and the anti-theft fastener are designed in an anti-theft manner, which increases the disassembly difficulty, prevents them from being easily disassembled by conventional tools, and achieves the anti-theft purpose, and improves the stability and safety of the fastening system.

[0024] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The utility model will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings that form a part of this application are intended to provide further understanding of the utility model, and the schematic embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute undue limitation on the utility model. In the drawings:

[0026] Fig. 1 is a sectional view of the main structure of the elastic fastening system for railway turnout according to the preferred embodiment of the utility model;

[0027] Fig. 2 is a main view of the turnout sleeper bolt in Fig. 1;

[0028] Fig. 3 is a top view of Fig. 2;

[0029] Fig. 4 is a top view of the locking nut in Fig. 1.

[0030] Legend: 10, supporting cushion layer; 11, cushion plate; 12, under-plate cushion layer; 13, under-rail cushion layer; 20, elastic strip fastener; 21, mounting seat; 22, locking bolt; 23, elastic strip; 24, flat washer; 25, locking nut; 30, anti-theft fastener; 31, turnout sleeper bolt; 32, spring washer; 40, rail; 50, composite sleeve set; 51, positioning sleeve; 52, eccentric sleeve. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below with reference to the drawings, but the present application can be implemented in various different ways as defined and covered by the following.

[0032] Referring to FIG. 1, the preferred embodiment of the present application provides a railway turnout elastic fastener system, comprising: a supporting cushion layer 10, a plurality of elastic strip fasteners 20 and a plurality of anti-theft fasteners 30. The supporting cushion layer 10 is used to be laid on the track foundation, and the upper surface thereof has a rail bottom slope with a transverse slope not less than 1:20, so as to support the steel rail 40 and the elastic strip fastener 20, and the supporting cushion layer 10 has a matching gap corresponding to the deformation according to the stress size, so as to reduce vibration and noise. The plurality of elastic strip fasteners 20 are arranged on both sides of the steel rail 40 and connected with the rail bottom slope, so as to press the two sides of the steel rail 40 on the rail bottom slope respectively, and each elastic strip fastener 20 is designed in an anti-theft type, so as to prevent it from being easily unlocked and loosened. The plurality of anti-theft fasteners 30 are arranged on both sides of the width direction of the supporting cushion layer 10, so as to be inserted into the track foundation after being inserted into the corresponding side of the supporting cushion layer 10, so as to detachably fix the supporting cushion layer 10 and the track foundation, and each anti-theft fastener 30 is also designed in an anti-theft type, so as to prevent it from being easily unlocked and loosened.

[0033] In the prior art, the supporting cushion layer 10 is elastically arranged to support the steel rail, and simultaneously elastically reduce vibration and noise, so as to reduce the influence of the vibration of the steel rail on the track foundation below, reduce the stress of the steel rail and the track foundation, and further prolong the service life of the elastic fastener system, reduce the maintenance and maintenance cost, and improve the system operation stability. In the present application, the supporting cushion layer 10 has a matching gap corresponding to the deformation according to the stress size in the existing arrangement, so as to further strengthen the effect of the supporting cushion layer 10, further reduce vibration and noise, prolong the service life of the whole elastic fastener system, greatly reduce the maintenance and maintenance cost, and improve the system operation stability. On the other hand, the upper surface of the supporting cushion layer 10 has a rail bottom slope with a transverse slope not less than 1:20, and the steel rail 40 is supported on the rail bottom slope. Through experiments and theoretical analysis, it is shown that the rail bottom slope not less than 1:20 has obvious effects on reducing the wear of the steel rail 40 and improving the wheel-rail relationship, and different rail bottom slopes have great influence on the design of the fastener system. In addition, the elastic strip fastener 20 and the anti-theft fastener 30 are designed in an anti-theft type, which increases the dismounting difficulty, prevents them from being easily dismounted and loosened by conventional tools, so as to achieve the anti-theft purpose, and simultaneously improve the stability and safety of the fastener system operation.

[0034] Optionally, as shown in FIG. 1, the support cushion layer 10 comprises a cushion plate 11 and a plate-under cushion layer 12 which are sequentially stacked and laid. The upper surface of the cushion plate 11 has a rail bottom slope. The plate-under cushion layer 12 is laid on the rail foundation and is in wave-shaped contact with the cushion plate 11 to form a matching gap therebetween, thereby reducing vibration and noise.

[0035] In this optional solution, as shown in FIG. 1, the upper surface of the plate-under cushion layer 12 is provided with an upper wave-shaped surface. The lower surface of the cushion plate 11 is provided with a lower wave-shaped surface which cooperates with the upper wave-shaped surface, and the concave-convex waves of the lower wave-shaped surface and the upper wave-shaped surface have a matching gap therebetween. In this optional solution, the width and / or depth of the matching concave-convex waves can be set to make the matching gap between the concave-convex waves along the thickness direction of the support cushion layer 10, and the size of the matching gap changes with the force between the cushion plate 11 and the plate-under cushion layer 12. For example, if the cushion plate 11 is under greater stress, the matching gap is smaller, and vice versa. Therefore, by setting the matching gap, the vibration and noise reduction function of the support cushion layer 10 is further improved, thereby improving the stability of the fastener system and prolonging its service life.

[0036] Preferably, as shown in FIG. 1, the wave lines of the upper wave-shaped surface extend along the transverse direction, the longitudinal direction or the oblique direction of the plate-under cushion layer 12, i.e. the wave lines of the upper wave-shaped surface can extend in any direction, as long as the lower wave-shaped surface cooperates with the upper wave-shaped surface. In the specific embodiment of this preferred solution, the wave lines of the upper wave-shaped surface extend in a wave shape along the transverse direction of the plate-under cushion layer 12 to reduce the processing difficulty.

[0037] Preferably, as shown in FIG. 1, the wave lines of the upper wave-shaped surface extend along the transverse direction, the longitudinal direction or the oblique direction of the plate-under cushion layer 12, i.e. the wave lines of the upper wave-shaped surface can extend in any direction, as long as the lower wave-shaped surface cooperates with the upper wave-shaped surface. In the specific embodiment of this preferred solution, the wave lines of the upper wave-shaped surface extend in a wave shape along the transverse direction of the plate-under cushion layer 12 to reduce the processing difficulty.

[0038] Preferably, as shown in FIG. 1, the cushion plate 11 is an iron cushion plate 11 made of steel material to improve the overall support stiffness of the support cushion layer 10. Since the cushion plate 11 is an iron cushion plate 11 made of steel material, in order to prevent the hard contact between the rail 40 and the cushion plate 11, the support cushion layer 10 further comprises a rail-under cushion layer 13 which is laid on the upper surface of the iron cushion plate 11. The upper surface of the rail-under cushion layer 13 is a rail bottom slope, and the rail-under cushion layer 13 is made of plastic material.

[0039] Optionally, as shown in FIG. 1 and FIG. 2, the anti-theft fastener 30 comprises a frog bolt 31 and a spring washer 32 fitted on the outer circle of the frog bolt 31. The shank of the frog bolt 31 is used to vertically pass through the support cushion layer 10 and extend into the sub-track foundation, so as to detachably fix the support cushion layer 10 and the sub-track foundation. The head of the frog bolt 31 is specially shaped to prevent the frog bolt 31 from being easily loosened by clamping the head with a conventional tool. The spring washer 32 is used to press the support cushion layer 10 under the action of the head.

[0040] In this optional solution, as shown in FIG. 3, the head of the frog bolt 31 is conical along the axial direction, and the large end thereof is fixedly connected to the top end of the shank. A plurality of anti-theft grooves are further processed on the outer circle of the head, and the anti-theft grooves are sequentially and spacedly arranged along the circumferential direction and are concave. Each anti-theft groove extends along the height direction of the head, and the width and / or depth of each anti-theft groove changes along the height direction of the head, so that the head is specially shaped, the difficulty of disassembly is increased, and the frog bolt 31 is prevented from being easily loosened by clamping the head with a conventional tool, so as to achieve the anti-theft purpose and improve the stability and safety of the fastener system.

[0041] Preferably, as shown in FIG. 1, the support cushion layer 10 is further provided with a mounting through hole for the anti-theft fastener 30 to pass through. The railway turnout elastic fastener system further comprises a composite sleeve set 50 mounted in the mounting through hole. The anti-theft fastener 30 extends into the sub-track foundation after passing through the composite sleeve set 50, so as to prevent the anti-theft fastener 30 from directly contacting and wearing the support cushion layer 10 through the composite sleeve set 50, and to slightly adjust the support cushion layer 10 along the width direction through the composite sleeve set 50. In this preferred solution, the pad 11 is processed to a certain thickness at both ends, and mounting through holes for mounting the composite sleeve set 50 are drilled at both ends.

[0042] In this preferred solution, as shown in FIG. 1, the composite sleeve set 50 comprises a positioning sleeve 51 and an eccentric sleeve 52 which are sequentially and concentrically sleeved. The anti-theft fastener 30 passes through the positioning sleeve 51 to position the support cushion layer 10. During actual installation, the position of the anti-theft fastener 30 is unchanged, so the support cushion layer 10 is positioned by the positioning sleeve 51. The eccentric sleeve 52 is eccentrically arranged in a millimeter series, so as to slightly adjust the position of the composite cushion layer relative to the anti-theft fastener 30. In this preferred solution, the eccentric sleeve 52 is eccentrically arranged in a millimeter series, that is, the eccentric sleeve 52 is eccentrically arranged, and the eccentric thickness of adjacent two levels of the eccentric sleeve 52 is different by 1 mm, so as to improve the adaptability. During actual installation, the position of the anti-theft fastener 30 is unchanged, so the position of the support cushion layer 10 relative to the fixed anti-theft fastener 30 can be adjusted by selecting eccentric sleeves 52 of different sizes to meet the installation requirements.

[0043] Optionally, as shown in Fig. 1, the elastic fastener 20 comprises a mounting base 21 fixed on the upper surface of the supporting cushion 10, a locking bolt 22 vertically and screwedly connected in the mounting base 21, an elastic strip 23 sleeved on the locking bolt and the mounting base 21, a flat washer 24 and a locking nut 25 sequentially arranged on the outer circle of the locking bolt 22. The locking nut 25 is specially shaped to prevent the elastic fastener 20 from being easily released after the locking nut 25 is clamped by a conventional tool; the flat washer 24 is used to press the elastic strip 23 under the action of the locking nut 25 above it, so that the elastic strip 23 presses the rail web of the corresponding side of the rail 40 on the rail bottom slope. In this optional solution, as shown in Fig. 1, the elastic strip 23 is a narrow ω-shaped elastic strip with a width less than 60 mm, so that the elastic strip 23 can be installed at the position of the narrow space of the frog area, reducing the application of rigid clamping.

[0044] In this optional solution, as shown in Fig. 4, the cross section of the locking nut 25 is triangular or irregular polygonal, increasing the difficulty of disassembly, preventing the elastic fastener 20 from being easily released after the locking nut 25 is clamped by a conventional tool, so as to achieve the purpose of theft prevention, and improving the stability and safety of the fastener system operation.

[0045] Optionally, not shown in the figure, the elastic fastener system for railway turnout further comprises an adjusting piece, the adjusting piece is arranged between the elastic fastener 20 and the side edge of the rail web of the rail 40, and the adjusting piece is arranged in millimeter series thickness. In this optional solution, the preset gauge block is cancelled, and the 1 mm and 2 mm thick adjusting pieces are used instead, solving the technical problems of "more number and specifications, installation error on site and not easy to find, also increasing the workload of later maintenance and repair" existing in the use of gauge block.

[0046] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A resilient fastener system for railway points, characterised in that, Comprise: a supporting cushion layer (10), a plurality of elastic strip fasteners (20) and a plurality of anti-theft fasteners (30); the supporting cushion layer (10) is used to be laid on the subgrade, and the upper surface of the supporting cushion layer (10) has a rail bottom slope with a transverse slope not less than 1:20, so as to support the steel rail (40) and the elastic strip fastener (20); the supporting cushion layer (10) has a matching gap corresponding to the deformation according to the stress, so as to reduce vibration and noise; the plurality of elastic strip fasteners (20) are used to be arranged on both sides of the steel rail (40) and connected with the rail bottom slope, so as to press the both sides of the steel rail (40) on the rail bottom slope respectively, and each elastic strip fastener (20) is also designed in an anti-theft type, so as to prevent it from being easily unlocked and loosened; the plurality of anti-theft fasteners (30) are used to be arranged on both sides of the supporting cushion layer (10) in the width direction, so as to be inserted into the subgrade after penetrating the corresponding side of the supporting cushion layer (10), so as to detachably fix the supporting cushion layer (10) and the subgrade, and each anti-theft fastener (30) is also designed in an anti-theft type, so as to prevent it from being easily unlocked and loosened.

2. The elastic fastener system for railway turnout according to claim 1, characterized in that: the supporting cushion layer (10) comprises a cushion plate (11) and a sub-plate cushion layer (12) laid in sequence; the upper surface of the cushion plate (11) has a rail bottom slope; the sub-plate cushion layer (12) is used to be laid on the subgrade, and the sub-plate cushion layer (12) is in wave type contact with the cushion plate (11) to form a matching gap therebetween, so as to reduce vibration and noise.

3. The elastic fastener system for railway turnout according to claim 2, characterized in that: the upper surface of the sub-plate cushion layer (12) is an upper wave surface arranged in a wave shape; the lower surface of the cushion plate (11) is a lower wave surface matched with the upper wave surface, and the matching gap is formed between the concave and convex waves matched with each other of the upper wave surface and the lower wave surface.

4. The elastic fastener system for railway turnout according to claim 3, characterized in that: the wave lines of the upper wave surface extend along the transverse direction, the longitudinal direction or the oblique direction of the sub-plate cushion layer (12); the amplitudes of the adjacent convex wave and concave wave deviating from the center line on the upper wave surface are the same or different.

5. The elastic fastener system for railway turnout according to claim 1, characterized in that: the cushion plate (11) is an iron cushion plate (11) made of steel material; the supporting cushion layer (10) further comprises a sub-rail cushion layer (13) used to be laid on the upper surface of the iron cushion plate (11), and the upper surface of the sub-rail cushion layer (13) is a rail bottom slope.

6. The elastic fastener system for railway turnout according to claim 1, characterized in that: the anti-theft fastener (30) comprises a turnout sleeper bolt (31), and a spring washer (32) matched and arranged on the outer circle of the turnout sleeper bolt (31); the screw rod of the turnout sleeper bolt (31) is used to be vertically inserted into the subgrade after penetrating the supporting cushion layer (10), so as to detachably fix the supporting cushion layer (10) and the subgrade, and the bolt head of the turnout sleeper bolt (31) is specially arranged, so as to prevent the turnout sleeper bolt (31) from being easily unlocked and loosened by clamping the bolt head with a conventional tool; the spring washer (32) is used to press the supporting cushion layer (10) under the action of the bolt head.

7. The elastic fastener system for railway turnout according to claim 1, characterized in that, the supporting cushion (10) is further provided with a mounting through hole for the anti-theft fastener (30) to pass through; the elastic fastener system for railway turnout further comprises a composite sleeve set (50) installed in the mounting through hole, the anti-theft fastener (30) passes through the composite sleeve set (50) and extends into the rail foundation, so as to prevent the anti-theft fastener (30) from directly contacting and wearing the supporting cushion (10) through the composite sleeve set (50), and to adjust the supporting cushion (10) in the width direction through the composite sleeve set (50).

8. The elastic fastener system for railway turnout according to claim 7, characterized in that, the composite sleeve set (50) comprises a positioning sleeve (51) and an eccentric sleeve (52) which are sequentially sleeved from inside to outside; the anti-theft fastener (30) passes through the positioning sleeve (51) to position the supporting cushion (10) through the positioning sleeve (51); the eccentric sleeve (52) is eccentrically arranged in a millimeter series, so as to adjust the position of the composite cushion relative to the anti-theft fastener (30).

9. The elastic fastener system for railway turnout according to claim 1, characterized in that, the elastic strip fastener (20) comprises a mounting seat (21) fixed to the upper surface of the supporting cushion (10), a locking bolt (22) vertically and threadedly connected in the mounting seat (21), an elastic strip (23) sleeved on the locking bolt (22) and the mounting seat (21), a flat washer (24) and a locking nut (25) which are sequentially installed on the outer circle of the locking bolt (22); the locking nut (25) is specially shaped, so as to easily loosen the elastic strip fastener (20) by clamping the locking nut (25) with a conventional tool; the flat washer (24) is used to press the elastic strip (23) under the action of the locking nut (25) above it, so as to press the rail leg of the corresponding side of the steel rail (40) on the rail bottom slope by the elastic strip (23).

10. The elastic fastener system for railway turnout according to claim 1, characterized in that, the elastic fastener system for railway turnout further comprises an adjusting piece, the adjusting piece is arranged between the elastic strip fastener (20) and the side edge of the rail leg of the steel rail (40), and the adjusting piece is arranged in a millimeter series of thickness.

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