Railway turnout and turnout elastic strip fastening assembly thereof

Abstract

The utility model discloses a railway turnout and a turnout elastic strip fastening assembly thereof, the turnout elastic strip fastening assembly comprises a base, a T-shaped bolt and a fastening nut, the base is used for supporting an elastic strip, the base is provided with a limiting groove, the T-shaped bolt comprises a limiting head and a screw rod, and the T-shaped bolt is connected with the limiting head and the screw rod. A limiting groove is formed in the base, the limiting head is matched with the limiting groove and embedded in the limiting groove, the screw is connected with the limiting head and used for penetrating to the position above the elastic strip along a middle ring of the elastic strip, and the fastening nut is in threaded connection with the screw and used for pressing the elastic strip on the base. The diameter of a circumcircle of the fastening nut in the direction towards the base is gradually increased. The turnout elastic strip fastening component provided by the utility model has a better anti-loosening and anti-theft effect, can stably fix the elastic strip of the railway turnout, is simple and efficient in structure, low in cost and strong in applicability, and can be directly mounted and used without changing the structure of the existing railway turnout.

Description

TECHNICAL FIELD

[0001] The utility model relates to railway equipment technical field, in particular, a kind of switch spring bar fastening assembly, and railway switch using the switch spring bar fastening assembly of described. BACKGROUND

[0002] At present, in order to ensure that train high-speed, safe, stable operation, the connection between rail and ballast in railway switch must be stable and reliable, and because of the wheel-rail contact and interaction force complex and changeable when train passes through switch, so switch is one of the three weak links of restricting train safe and stable operation, therefore, spring bar fastener connecting rail and ballast in switch is the most critical.

[0003] The existing spring bar fastener mostly adopts the cooperation of bolt and nut to fasten, so as to disassemble and maintain, for example, a kind of elastic fastening rail slide plate device provided by Chinese utility model patent CN218175437U, which fixes the spring bar on the iron seat by the cooperation of T-shaped bolt and nut, so that part of the structure of spring bar is elastically pressed on one side rail limb of rail, to realize the elastic fixation of rail. However, because bolt and nut are directly exposed, and conventional nut does not have anti-theft effect, in some underdeveloped areas, due to the serious lack of protection along the railway and later maintenance measures, the phenomenon of spring bar fastener being stolen often occurs, which seriously threatens the safety of train operation. Secondly, ordinary nut also does not have effective anti-loosening effect, considering the wheel-rail interaction force and alternating load when train passes through, the existing fastening structure has the risk of loosening, and long-term operation of train cannot guarantee the stable and reliable connection of spring bar fastener to rail and ballast. SUMMARY

[0004] The utility model primarily provides a kind of switch spring bar fastening assembly, to solve the technical problem that the fastening structure of existing spring bar fastener does not have anti-loosening and anti-theft effect.

[0005] The utility model also provides a kind of railway switch, which adopts the above-mentioned switch spring bar fastening assembly.

[0006] According to one aspect of the utility model, a switch spring bar fastening assembly is provided, which includes a base, a T-shaped bolt and a fastening nut. The base is used to support the spring bar. A limiting groove is provided on the base. The T-shaped bolt includes a limiting head and a screw rod. The limiting head is adapted to the limiting groove and embedded in the limiting groove. The screw rod is connected to the limiting head and used to pass through the middle ring of the spring bar to the upper side of the spring bar. The fastening nut is threadedly connected to the screw rod and used to press the spring bar tightly on the base. The diameter of the outer circle of the fastening nut gradually increases in the direction towards the base.

[0007] Preferably, the outer circle of the fastening nut is in a pentagonal structure.

[0008] Preferably, the turnout elastic strip fastening assembly further comprises a sleeve conversion head, a first end of the sleeve conversion head is matched with the outer shape of the fastening nut and used for clamping the fastening nut, and a second end of the sleeve conversion head is matched with a driving tool.

[0009] Preferably, opposite sides of the limiting head are each provided with a limiting part extending in the radial direction of the screw rod, and the thickness of the limiting part gradually decreases in the direction away from the screw rod.

[0010] Preferably, the side of the two limiting parts away from the fastening nut is located on the same plane, and the side of the limiting part towards the fastening nut is provided with an arc surface structure.

[0011] Preferably, the T-shaped bolt further comprises a limiting neck provided between the limiting head and the screw rod, the limiting neck is provided with a multi-prism structure, the limiting groove is provided with a limiting throat matched with the limiting neck and used for clamping the limiting neck, and the T-shaped bolt is limited in the circumferential direction relative to the base through the cooperation of the limiting neck and the limiting throat.

[0012] Preferably, the turnout elastic strip fastening assembly further comprises a gasket used for being arranged between the fastening nut and the elastic strip, and the side of the gasket towards the base is provided with a positioning groove used for embedding the elastic strip.

[0013] Preferably, the elastic strip comprises two elastic branches arranged on opposite sides of the gasket, the gasket comprises a connecting part used for penetrating the screw rod and two positioning parts arranged on opposite sides of the connecting part, the positioning groove is arranged on the positioning part, the thickness of the connecting part is greater than the thickness of the positioning part, and the positioning grooves on the two positioning parts are used for embedding the two elastic branches of the elastic strip one by one.

[0014] Preferably, the side of the fastening nut towards the gasket and / or the side of the gasket towards the fastening nut is provided with an anti-skid structure.

[0015] As a second aspect, the utility model further provides a railway turnout comprising the above-mentioned turnout elastic strip fastening assembly.

[0016] The utility model has the following beneficial effects:

[0017] The fastening nut gradually increases in diameter along the outer circle from top to bottom, namely, the outer periphery of the fastening nut is provided with a tapered structure which is narrow at the top and wide at the bottom, normal wrenches, sleeves and other tools cannot be clamped to bear force, special tools need to be used for disassembly and assembly, the risk of theft of the spring strip of the railway turnout is effectively reduced, the spring strip is better applicable to the position lacking protection along the railway, thereby manual inspection can be reduced, and railway operation efficiency and safety are improved.

[0018] 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

[0019] 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 improper limitation on the utility model. In the drawings:

[0020] Figure 1 The use state of the turnout spring strip fastening assembly provided by the utility model embodiment is shown in the reference diagram;

[0021] Figure 2 The exploded view of the turnout spring strip fastening assembly is shown in the reference diagram; Figure 1

[0022] Figure 3 The sectional structure diagram of the turnout spring strip fastening assembly is shown in the reference diagram; Figure 1

[0023] The perspective view of the base in the turnout spring strip fastening assembly is shown in the reference diagram; Figure 4 Figure 1 The perspective view of the T-shaped bolt in the turnout spring strip fastening assembly is shown in the reference diagram;

[0024] Figure 5 Figure 1 The perspective view of the fastening nut in the turnout spring strip fastening assembly is shown in the reference diagram;

[0025] Figure 6 The perspective view of the fastening nut in the turnout spring strip fastening assembly is shown in the reference diagram; Figure 1

[0026] Figure 7 Figure 1 ​​​​​A perspective view of a washer in the turnout spring fastening assembly shown;

[0027] Figure 8 A perspective view of a sleeve conversion head in the turnout spring fastening assembly provided by the embodiments of the present application.

[0028] Legend:

[0029] 1000, railway turnout; 100, turnout spring fastening assembly; 1, base; 11, limiting groove; 111, arc-shaped limiting wall; 12, limiting throat; 2, T-shaped bolt; 21, limiting head; 211, limiting part; 22, screw rod; 23, limiting neck; 3, fastening nut; 31, anti-skid structure; 4, washer; 41, connecting part; 42, positioning part; 421, positioning groove; 5, sleeve conversion head; 51, driving hole; 52, driving head; 200, spring; 201, elastic branch; 300, backing plate; 400, rail. DETAILED DESCRIPTION

[0030] The embodiments of the present application will be described in detail below with reference to the accompanying drawings, but the present application can be implemented in various different ways as defined and covered below.

[0031] Figures 1 to 8 The present application provides a turnout spring fastening assembly, which is used for pressing a spring of a railway turnout onto a rail limb of a rail to realize positioning and fixing of the rail, and has a simple and efficient fastening structure and good anti-loosening and anti-theft effects.

[0032] Please refer to Figure 1 , Figure 2 and Figure 3 , the turnout spring fastening assembly 100 comprises a base 1, a T-shaped bolt 2 and a fastening nut 3, the base 1 is used for being fixedly installed on a backing plate 300 and supporting a spring 200, the base 1 is provided with a limiting groove 11, the T-shaped bolt 2 comprises a limiting head 21 and a screw rod 22, the limiting head 21 is matched with the limiting groove 11 and embedded in the limiting groove 11, the screw rod 22 is connected with the limiting head 21 and used for being arranged along a middle ring of the spring 200 to the upper side of the spring 200, the fastening nut 3 is threadedly connected with the screw rod 22 and used for pressing the spring 200 onto the base 1, and the fastening nut 3 gradually increases in diameter along an outer tangent circle in the direction towards the base 1.

[0033] Specifically, the elastic strip 200 includes two elastic branches 201 arranged on opposite sides of the screw rod 22, the first ends of the two elastic branches 201 are connected into an integral structure and jointly enclosed into a middle ring for the screw rod 22 to pass through, and the second ends of the two elastic branches 201 are used to abut the rail leg of the rail 400 to press and fix the rail 400 through the elastic branches 201 after the turnout elastic strip fastening assembly 100 fastens the elastic strip 200 in place.

[0034] In the turnout elastic strip fastening assembly 100, the fastening nut 3 gradually increases in diameter of the circumscribed circle in the direction towards the base 1, that is, the outer periphery of the fastening nut 3 is provided in a tapered structure with a narrow upper part and a wide lower part, and a conventional wrench, sleeve or other tool cannot be clamped under stress, and a special tool needs to be used for disassembly and assembly, effectively reducing the risk of theft of the elastic strip 200 of the railway turnout, and better adapting to the lack of protection positions along the railway, thereby reducing manual patrol and improving railway operation efficiency and safety. Secondly, since the fastening nut 3 is provided in a tapered structure with a narrow upper part and a wide lower part, the bottom area is larger than that of a conventional nut, which can provide greater friction resistance and achieve better fastening effect, and is not easy to be affected by the wheel-rail interaction force and alternating load when the train passes through, so as to be self-loosened, so that the turnout elastic strip fastening assembly 100 can simultaneously play the effects of anti-loosening and anti-theft on the elastic strip 200, has simple and efficient structure, low cost, and can be directly installed and used without modifying the structure of the existing railway turnout, and has strong applicability.

[0035] As shown in Figure 6 The outer circle of the fastening nut 3 is provided in a regular pentagonal structure, which can make the opposite sides of the fastening nut 3 be asymmetric structures, and the opposite side of each plane on the outer periphery of the fastening nut 3 is an edge, avoiding clamping the opposite sides of the fastening nut 3 by a conventional wrench, further improving the anti-theft effect, and the regular pentagonal structure can cooperate with a special tool to form good stability and fastening effect, and the engagement angle can be easily found, facilitating disassembly and assembly. It should be understood that in other embodiments, the outer circle of the fastening nut 3 can also be provided in other polygonal structures other than hexagonal and square structures.

[0036] As shown in Figure 8As shown, the turnout elastic strip fastening assembly 100 further comprises a sleeve conversion head 5, a first end of the sleeve conversion head 5 is matched with the outer shape of the fastening nut 3 and used for clamping the fastening nut 3, and a second end of the sleeve conversion head 5 is matched with a driving tool. Specifically, the first end of the sleeve conversion head 5 is provided with a driving hole 51, the second end of the sleeve conversion head 5 is provided with a driving head 52, the driving hole 51 is matched with the outer shape of the fastening nut 3 and used for clamping the fastening nut 3, and the driving head 52 is provided in a regular hexagonal or square structure matched with a conventional wrench, sleeve and other driving tools. By clamping the fastening nut 3 through the sleeve conversion head 5, the sleeve conversion head 5 can be driven to rotate by using a conventional driving tool to drive the fastening nut 3 to rotate, so as to realize the tensioning operation of the fastening nut 3, so that the fastening nut 3 can be matched with a conventional driving tool, without the need to customize a complete set of tools, thereby reducing the use cost.

[0037] As shown in Figure 5 As shown, the opposite sides of the limiting head 21 are both provided with limiting portions 211 extending along the radial direction of the screw rod 22, and the thickness of the limiting portions 211 gradually decreases in the direction away from the screw rod 22, so that the closer the position of the limiting portion 211 to the screw rod 22, the greater the thickness and the strength, thereby avoiding the fracture of the limiting portion 211 at the connection point.

[0038] Please refer to Figure 4 and Figure 5 , the side of the two limiting portions 211 away from the fastening nut 3 is located on the same plane, the side of the limiting portion 211 facing the fastening nut 3 is provided in an arc surface structure, the limiting groove 11 is provided with an arc limiting wall 111 corresponding to the arc surface structure, the screw rod 22 is axially limited by the cooperation of the arc surface structure and the arc limiting wall 111, the contact area between the limiting portion 211 and the limiting groove 11 in the tensioning direction of the fastening nut 3 can be improved, the stress effect is better, the fastening strength is higher, and the fastening position of the screw rod 22 can be guided by the cooperation of the arc surface structure on the two limiting portions 211 and the corresponding arc limiting wall 111, so as to realize the center positioning of the screw rod 22 and ensure that the screw rod 22 is accurately arranged at the center position of the elastic strip 200.

[0039] Preferably, the T-shaped bolt 2 further comprises a limiting neck 23 arranged between the limiting head 21 and the screw rod 22, the limiting neck 23 is arranged in a polygonal structure, the top end of the limiting groove 11 is provided with a limiting throat 12 matched with the limiting neck 23 and used for clamping the limiting neck 23, the T-shaped bolt 2 is limited circumferentially relative to the base 1 through the cooperation of the limiting neck 23 and the limiting throat 12, so as to realize the circumferential anti-rotation of the T-shaped bolt 2 and avoid the rotation of the fastening nut 3 driving the T-shaped bolt 2. Since the T-shaped bolt 2 is axially limited by the limiting head 21 and circumferentially limited by the limiting neck 23, the limiting head 21 and the limiting neck 23 only bear the force in one direction, avoiding the deviation caused by the force in multiple directions at the same time, which can realize more stable and firm limiting effect and improve the positioning accuracy of the T-shaped bolt 2.

[0040] Please refer to Figure 1 and Figure 2 , the turnout elastic strip fastening assembly 100 further comprises a gasket 4, the gasket 4 is used for being arranged between the fastening nut 3 and the elastic strip 200, the pressure of the fastening nut 3 on the elastic strip 200 is dispersed through the gasket 4, and the surface of the elastic strip 200 is protected to avoid the elastic strip 200 being scratched by the rotating friction force of the fastening nut 3 in the process of tightening and loosening.

[0041] As shown in Figure 7 , preferably, one side of the gasket 4 towards the base 1 is provided with a positioning groove 421 used for embedding the elastic strip 200, the positioning groove 421 is matched with the shape of the elastic strip 200. The elastic strip 200 is clamped through the positioning groove 421, which not only can position and fix the gasket 4 to avoid the rotation of the gasket 4 relative to the elastic strip 200, improve the stability and installation accuracy of the gasket 4, but also can make the gasket 4 fully contact the outer wall surface of the elastic strip 200, better transmit the pressing force of the fastening nut 3 to the elastic strip 200, improve the fastening effect, and avoid the loosening of the elastic strip 200.

[0042] Further, the gasket 4 comprises a connecting portion 41 and two positioning portions 42 respectively arranged on opposite sides of the connecting portion 41, the connecting portion 41 is provided with a avoiding hole for penetrating the screw rod 22, the positioning slot 421 is arranged on the positioning portion 42, the thickness of the connecting portion 41 is greater than that of the positioning portion 42, and the positioning slots 421 on the two positioning portions 42 are used for embedding the two elastic branches 201 of the elastic strip 200 one by one. By clamping the two elastic branches 201 of the elastic strip 200 through the two positioning slots 421, the contact area of the gasket 4 and the elastic strip 200 is effectively increased, the positioning effect is improved, and the thickness of the connecting portion 41 is greater than that of the positioning portion 42, so that the connecting portion 41 can stably connect the two positioning portions 42 into a whole, and the overall structural strength is ensured.

[0043] As shown in Figure 6 One side of the fastening nut 3 towards the gasket 4 and / or one side of the gasket 4 towards the fastening nut 3 is provided with an anti-skid structure 31, the anti-skid structure 31 has anti-skid particles or grooves, the friction between the fastening nut 3 and the gasket 4 is enhanced through the anti-skid structure 31, the fastening nut 3 can provide greater anti-loosening resistance, and the anti-loosening and anti-theft effect of the elastic strip 200 is further improved.

[0044] As a second aspect, the utility model also provides a railway turnout 1000, comprising the turnout elastic strip fastening assembly 100, the railway turnout 1000 further comprises an elastic strip 200, a backing plate 300 and a rail 400, the rail 400 is placed on the backing plate 300, the turnout elastic strip fastening assembly 100 is provided with two groups, two groups of turnout elastic strip fastening assemblies 100 are respectively arranged on opposite sides of the rail 400, the elastic strip 300 is installed on the backing plate 300 and is pressed to the rail leg of the rail 400 through the turnout elastic strip fastening assembly 100, and the positioning and fixing of the rail 400 are realized. Since the turnout elastic strip fastening assembly 100 has better anti-loosening and anti-theft effect, the structure is simple and efficient, the structure of the elastic strip 200, the backing plate 300 and the rail 400 does not need to be changed, and the railway turnout 1000 can be directly installed and used, the safety and reliability of the railway turnout 1000 are effectively improved, and the cost can be reduced.

[0045] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A switch spring clip fastening assembly, characterized by, The application relates to a turnout spring fastening assembly which comprises a base (1) for supporting a spring strip (200), a T-shaped bolt (2) and a fastening nut (3), the base (1) is provided with a limiting groove (11), the T-shaped bolt (2) comprises a limiting head (21) and a screw rod (22), the limiting head (21) is matched with the limiting groove (11) and is embedded in the limiting groove (11), the screw rod (22) is connected with the limiting head (21) and is used for penetrating the middle ring of the spring strip (200) to the upper side of the spring strip (200), the fastening nut (3) is threadedly connected with the screw rod (22) and is used for pressing the spring strip (200) on the base (1), and the diameter of the outer circle of the fastening nut (3) gradually increases in the direction towards the base (1).

2. The switch spring tight assembly of claim 1, wherein, The outer ring of the fastening nut (3) is provided with a pentagonal structure.

3. A switch spring tight assembly according to claim 1 or 2, c h a r a c t e r i z e d in that The turnout spring fastening assembly further comprises a sleeve conversion head (5), the first end of the sleeve conversion head (5) is matched with the outer shape of the fastening nut (3) and is used for clamping the fastening nut (3), and the second end of the sleeve conversion head (5) is matched with a driving tool.

4. The switch spring tight assembly of claim 1, wherein, The opposite sides of the limiting head (21) are both provided with limiting portions (211) extending in the radial direction of the screw rod (22), and the thickness of the limiting portions (211) gradually decreases in the direction away from the screw rod (22).

5. The switch spring tight assembly of claim 4, wherein, The sides, away from the fastening nut (3), of the two limiting portions (211) are located on the same plane, and the sides, towards the fastening nut (3), of the limiting portions (211) are provided with arc surface structures.

6. The switch spring tight assembly of claim 4, wherein, The T-shaped bolt (2) further comprises a limiting neck (23) arranged between the limiting head (21) and the screw rod (22), the limiting neck (23) is provided with a multi-prism structure, the limiting groove (11) is provided with a limiting throat (12) matched with the limiting neck (23) and used for clamping the limiting neck (23), and the T-shaped bolt (2) is circumferentially limited relative to the base (1) through the cooperation of the limiting neck (23) and the limiting throat (12).

7. The switch spring tight assembly of claim 1, wherein, The turnout spring fastening assembly further comprises a gasket (4) used for being arranged between the fastening nut (3) and the spring strip (200), and the side, towards the base (1), of the gasket (4) is provided with a positioning groove (421) used for embedding the spring strip (200).

8. The switch spring tight assembly of claim 7, wherein, The spring strip (200) comprises two elastic branches (201) arranged on the opposite sides of the gasket (4), the gasket (4) comprises a connecting portion (41) used for penetrating the screw rod (22) and two positioning portions (42) arranged on the opposite sides of the connecting portion (41), the positioning groove (421) is arranged on the positioning portion (42), the thickness of the connecting portion (41) is greater than the thickness of the positioning portion (42), and the positioning grooves (421) on the two positioning portions (42) are used for embedding the two elastic branches (201) of the spring strip (200) one by one.

9. A switch spring tight assembly according to claim 7 or 8, characterised in that, One side of the fastening nut (3) towards the washer (4) and / or one side of the washer (4) towards the fastening nut (3) is provided with an anti-skid structure (31).

10. Railway turnout, characterized in that The application relates to a switch spring fastening assembly comprising a fastening nut (3) and a washer (4) according to any one of claims 1 to 9.

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