Bridge guardrail fastener

Abstract

The utility model discloses a bridge guardrail fastener which comprises a left fastener body and a right fastener body, the left fastener body and the right fastener body form the bridge guardrail fastener, and a steel rail is arranged between the left fastener body and the right fastener body. According to the combined type bridge guardrail fastener, the left fastener and the right fastener are adopted to form the combined type bridge guardrail fastener, the left fastener and the right fastener are arranged in a groove of a sleeper, and the convex inserting piece of the left fastener and the concave inserting piece of the right fastener are in contact with the bottom face of a steel rail after being spliced. As the arc-shaped surface is arranged in the connecting gap between the left fastener and the right fastener and abuts against the side face of the lower portion of the steel rail, the bolt penetrates through the through holes of the left fastener and the right fastener to be connected with the screw hole in the groove of the sleeper, so that a component formed by the left fastener and the right fastener wraps the component and is kept in a clamped connection state with the bottom of the steel rail. Compared with an existing fastener structure distributed on the left side and the right side of the bridge guardrail, the longitudinal connection resistance of the steel rail can be increased to the maximum extent.

Description

Technical Field

[0001] This utility model relates to the technical field of bridge guardrail accessories, and in particular to bridge guardrail fasteners. Background Technology

[0002] According to relevant railway safety requirements, railway bridge guardrails should be laid at bridge sections crossing railways, important highways, and urban traffic arteries, as well as at roadbed sections with cliffs and steep slopes. The function of railway bridge guardrails is to confine the derailed wheels within the flange grooves between the guardrail and the stock rail when locomotives or rolling stock derail at the bridgehead or on the bridge, preventing them from rolling further down the bridge and causing serious accidents such as the locomotive wheels deviating from the bridge and colliding with it or falling off the bridge. In addition, they may also help to pull the wheels of derailed locomotives and rolling stock back onto the stock rail.

[0003] In the existing technology, the fasteners of bridge guard rails are generally an integral structure, and are installed in pairs on both sides of the bridge guard rail. They are connected to the sleepers with bolts or special screws. This structure makes the force point of the fastener connection with the guard rail located at the edge of the guard rail, resulting in weak longitudinal connection resistance and poor reliability of the guard rail.

[0004] To address this issue, a bridge guardrail fastener was proposed, which has the advantages of increasing the longitudinal connection resistance and reliability of the guardrail, thereby solving the problems mentioned in the background technology. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a bridge guardrail fastener.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a bridge guardrail fastener, comprising a left fastener and a right fastener, the left and right fasteners constituting a bridge guardrail fastener, with a rail between the left and right fasteners, and a sleeper provided on the outer periphery of the bottom of the rail. Mounting holes are provided on the surfaces of both the left and right fasteners, and bolts are inserted into the mounting holes. A threaded hole is provided in the groove of the sleeper corresponding to the mounting hole. One end of the bolt passes through the mounting hole and is threaded into the threaded hole. A convex insert is integrally cast at the bottom of the left fastener, and a concave insert is integrally cast at the bottom of the right fastener. After the convex and concave inserts are joined, they contact the bottom surface of the rail. A connecting gap is provided on the inner side of both the left and right fasteners, and an arc-shaped surface is provided on the inner side of the connecting gap. The lower part of the rail extends into the connecting gap and contacts the arc-shaped surface.

[0007] As a further description of the above technical solution: a wooden pad is fitted on the surface of the bolt, and the surface of the wooden pad has a connection hole, and the cross-section of the connection hole of the wooden pad is T-shaped.

[0008] As a further description of the above technical solution: the convex plug is provided with a splicing protrusion, and the concave plug is provided with a splicing groove connected to the splicing protrusion.

[0009] As a further description of the above technical solution: the connection gap between the left fastener and the right fastener is combined to form a locking cavity, and the inner space of the locking cavity matches the profile of the bottom section of the rail.

[0010] As a further description of the above technical solution: the surface of the sleeper is provided with a groove, and the left fastener, the right fastener and the rail are all located in the groove.

[0011] As a further description of the above technical solution: the lower part of the hexagonal screw head of the bolt extends into the connecting hole of the wooden pad, and the wooden pad contacts the top surface of the left or right fastener.

[0012] This utility model has the following beneficial effects:

[0013] In this utility model, a combined bridge guard rail fastener is constructed using left and right fasteners. By placing the left and right fasteners in the grooves of the sleeper, and splicing the convex insert of the left fastener and the concave insert of the right fastener to contact the bottom surface of the rail, the left and right fasteners have arc-shaped surfaces in the connection gaps, which abut against the lower side of the rail. As the bolts pass through the through holes of the left and right fasteners and connect with the screw holes in the grooves of the sleeper, the components formed by the left and right fasteners wrap around and maintain a snap-fit ​​connection with the bottom of the rail. Compared with the existing fastener structures distributed on the left and right sides of the bridge guard rail, this design can maximize the longitudinal connection resistance of the rail, thereby improving the reliability of the installation. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of the bridge guardrail fastener of this utility model;

[0015] Figure 2 This is a structural diagram of the left and right fasteners;

[0016] Figure 3 This is a structural diagram of the bolts and wooden pads.

[0017] Legend:

[0018] 1. Left fastener; 2. Right fastener; 3. Mounting hole; 4. Bolt; 5. Wooden pad; 6. Rail; 7. Sleeper; 8. Screw hole; 9. Convex insert; 10. Concave insert; 11. Connection gap; 12. Curved surface; 13. Splicing protrusion; 14. Splicing groove; 15. Connection hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] According to an embodiment of the present invention, a bridge guardrail fastener is provided.

[0021] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-3 As shown, the bridge guardrail fastener according to an embodiment of this utility model includes a left fastener 1 and a right fastener 2, which together constitute the bridge guardrail fastener. A rail 6 is provided between the left fastener 1 and the right fastener 2, and a sleeper 7 is provided around the bottom of the rail 6. Mounting holes 3 are provided on the surfaces of both the left fastener 1 and the right fastener 2, and bolts 4 are inserted into the mounting holes 3. A screw hole 8 is provided in the groove of the sleeper 7 corresponding to the mounting hole 3. One end of the bolt 4 passes through the mounting hole 3 and is threaded into the screw hole 8. The bottom of the left fastener 1 is integrally cast with a convex insert 9, and the bottom of the right fastener 2 is integrally cast with a concave insert 10. After the convex insert 9 and the concave insert 10 are joined together, they contact the bottom surface of the rail 6. Both the left fastener 1 and the right fastener 2 are provided with a connecting gap 11 on the inner side, and an arc-shaped surface 12 is provided on the inner side of the connecting gap 11. The lower part of the rail 6 extends into the connecting gap 11 and contacts the arc-shaped surface 12. The convex insert 9 and the concave insert 10 fit together tightly and maintain close contact with the bottom surface of the rail 6.

[0022] In one embodiment, a wooden pad 5 is fitted onto the surface of the bolt 4, and the surface of the wooden pad 5 has a connecting hole 15. The connecting hole 15 of the wooden pad 5 has a T-shaped cross-section. The use of the wooden pad 5 has the function of preventing loosening and, unlike rubber washers, helps to extend the service life.

[0023] In one embodiment, the convex plug 9 is provided with a splicing protrusion 13, and the concave plug 10 is provided with a splicing groove 14 connected to the splicing protrusion 13. This structure is beneficial to increase the contact area between the fastener and the rail 6 and to improve the fixing effect of the rail 6.

[0024] In one embodiment, the connection gap 11 between the left fastener 1 and the right fastener 2 forms a locking cavity, and the inner space of the locking cavity matches the bottom cross-sectional profile of the rail 6. This structure allows the left fastener 1 and the right fastener 2 to wrap around and engage with the bottom of the rail 6, increasing the reliability of the connection.

[0025] In one embodiment, the surface of the sleeper 7 is provided with a groove, in which the left fastener 1, the right fastener 2 and the rail 6 are all located. This structure facilitates the installation of the left fastener 1 and the right fastener 2.

[0026] In one embodiment, the lower part of the hexagonal head of the bolt 4 extends into the connecting hole 15 of the wooden pad 5, and the wooden pad 5 contacts the top surface of the left fastener 1 or the right fastener 2. This structure helps to prevent the bolt 4 from loosening.

[0027] Working principle:

[0028] In use, the left fastener 1 and the right fastener 2 are placed in the groove of the sleeper 7, and the convex insert 9 of the left fastener 1 and the concave insert 10 of the right fastener 2 are spliced ​​together and contact the bottom surface of the rail 6. Since the arc surface 12 is provided in the connection gap 11 of the left fastener 1 and the right fastener 2, and the arc surface 12 abuts against the lower side of the rail 6, as the bolt 4 passes through the mounting hole 3 of the left fastener 1 and the right fastener 2 and connects with the screw hole 8 in the groove of the sleeper 7, the component formed by the left fastener 1 and the right fastener 2 wraps around and keeps in a snap-fit ​​state with the bottom of the rail 6. Then, by using the above steps, multiple fasteners composed of the left fastener 1 and the right fastener 2 are installed at equal intervals along the length of the rail 6 to increase the longitudinal connection resistance of the rail 6 and improve the reliability of the installation.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Bridge guardrail fastener, comprising a left fastener (1) and a right fastener (2), characterized in that: The left fastener (1) and the right fastener (2) constitute a bridge guardrail fastener, a rail (6) is arranged between the left fastener (1) and the right fastener (2), and the periphery of the bottom of the rail (6) is provided with a sleeper (7), mounting holes (3) are formed in the surfaces of the left fastener (1) and the right fastener (2), bolts (4) are arranged in the mounting holes (3), screw holes (8) are formed in the grooves of the sleeper (7) and correspond to the mounting holes (3), one end of the bolt (4) penetrates the mounting hole (3) and is threadedly connected with the screw hole (8), a convex plug (9) is integrally cast on the bottom of the left fastener (1), a concave plug (10) is integrally cast on the bottom of the right fastener (2), the convex plug (9) and the concave plug (10) are in contact with the bottom surface of the rail (6) after being combined, and connecting gaps (11) are arranged in the inner sides of the left fastener (1) and the right fastener (2), arc surfaces (12) are arranged in the inner sides of the connecting gaps (11), and the lower part of the rail (6) extends into the connecting gap (11) and is in contact with the arc surface (12).

2. The bridge guardrail fastener of claim 1, wherein: The surface of the bolt (4) is sleeved with a wooden cushion block (5), the surface of the wooden cushion block (5) is provided with a connecting hole (15), and the connecting hole (15) of the wooden cushion block (5) has a T-shaped structure.

3. The bridge guardrail clip of claim 1, wherein: The convex plug (9) is provided with a splicing convex (13), and the concave plug (10) is provided with a splicing groove (14) connected with the splicing convex (13).

4. The bridge guardrail clip of claim 1, wherein: The connecting gaps (11) of the left fastener (1) and the right fastener (2) are combined into a locking cavity, and the inner space of the locking cavity is matched with the cross-sectional profile of the bottom of the rail (6).

5. The bridge guardrail clip of claim 1, wherein: The surface of the sleeper (7) is provided with a groove, and the left fastener (1), the right fastener (2) and the rail (6) are all arranged in the groove.

6. The bridge guardrail fastener of claim 1, wherein: The lower part of the hexagonal head of the bolt (4) extends into the connecting hole (15) of the wooden cushion block (5), and the top surface of the wooden cushion block (5) is in contact with the left fastener (1) or the right fastener (2).

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