A type of track fastener

Abstract

This invention discloses a track fastener, including a pre-embedded sleeve embedded in a sleeper, a base, a gauge plate, and a spiral spike. The gauge plate is mounted on the base, and both the base and the gauge plate have through holes for the spiral spike to pass through. The spiral spike is connected to the pre-embedded sleeve to fix the base and the gauge plate. The gauge plate has at least two adjustment slots that can be pressed against the rail base to adjust the track gauge. The distance between the contact point of each adjustment slot and the side of the rail base and the center of the spiral spike is different. The gauge plate is rotated to allow different adjustment slots to engage with the rail base to adjust the track gauge. This track fastener eliminates the spring clips and gauge blocks in traditional fastener systems, adding a gauge plate that can adjust the track gauge, resulting in better overall fastener integrity, fewer parts, easier adjustment, and reduced maintenance costs.

Description

Technical Field

[0001] This invention relates to a novel variable gauge track fastener structure in the field of rail transit fasteners. Background Technology

[0002] Currently, track gauge adjustment in rail transit requires independent components (gauge blocks). Furthermore, different gauge blocks of corresponding specifications are needed for different gauge adjustment amounts. This type of fastener reduces the convenience of construction and increases the complexity of the fastener system to varying degrees. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention optimizes traditional fastening systems by integrating gauge blocks of different specifications with gauge plates in the fastening system. This facilitates gauge adjustment while reducing subsequent maintenance costs. The technical solution adopted in this invention is as follows:

[0004] A track fastener includes a pre-embedded sleeve embedded in a sleeper, a base, a gauge plate, and a spiral spike. The gauge plate is mounted on the base. Both the base and the gauge plate have through holes for the spiral spike to pass through. The spiral spike is connected to the pre-embedded sleeve to fix the base and the gauge plate. The gauge plate has at least two adjustment slots that can be pressed against the rail base to adjust the track gauge. The distance between the contact point of each adjustment slot and the side of the rail base and the center of the spiral spike is different. The gauge plate is rotated to allow the different adjustment slots to engage with the rail base, thereby adjusting the track gauge.

[0005] Furthermore, the base and the gauge plate are provided with positioning elements to position the gauge plate. After the position of the adjustment slot on the gauge plate is adjusted, the positioning elements limit the gauge plate to achieve positioning and prevent rotation.

[0006] Furthermore, the positioning component includes a positioning post on the base and a positioning groove on the gauge plate. The positioning post can be inserted into the positioning groove to position the gauge plate on the base.

[0007] Furthermore, a limiting groove is provided on the base, and one side of the track gauge buckle plate can be inserted into the limiting groove to achieve positioning.

[0008] Furthermore, the gauge plate is provided with four adjustment slots, and two adjacent adjustment slots are located on two mutually perpendicular surfaces of the gauge plate.

[0009] Furthermore, the track gauge fastener is provided with 3, 5, or 6 adjustment slots.

[0010] Furthermore, a pressure plate is also provided on the upper surface of the track gauge buckle plate.

[0011] Furthermore, the base is provided with a pair of rails respectively placed on both sides.

[0012] Furthermore, the base is provided with a pair of bases respectively placed on both sides of the rail, and the bottoms of the bases are connected together to form a whole.

[0013] Furthermore, a shoulder that rests against the top of the sleeper is provided on the outer side of the base.

[0014] A gauge plate for rail fasteners has at least two adjustment slots that can be pressed against the rail base to adjust the gauge. The gauge plate also has through holes for installing spiral rail spikes. The distance between the contact part of each adjustment slot and the side of the rail base and the axis of the through hole is different. The gauge plate can be rotated around the spiral rail spike to make the different adjustment slots fit with the rail base.

[0015] Furthermore, the gauge plate is provided with four adjustment slots, and two adjacent adjustment slots are located on two mutually perpendicular surfaces of the gauge plate.

[0016] Furthermore, the cross-section of the track gauge buckle plate is cross-shaped.

[0017] Furthermore, the track gauge fastener is provided with 3, 5, or 6 adjustment slots.

[0018] Beneficial effects: This track fastener eliminates the spring clips and gauge blocks in traditional fastening systems, adding a gauge plate for adjustable gauge. Adjustment slots on the gauge plate act as gauge blocks, and multiple adjustment slots on the same plate allow for switching between different slots to engage with the rail base, achieving different gauge adjustments. This allows for gauge adjustment while simultaneously applying clamping pressure to the rail, resulting in a fastener with good overall integrity, fewer parts, easier adjustment, and reduced maintenance costs. Furthermore, the outer side of the base plate engages with the sleeper shoulder, reducing the lateral shear force on the helical spikes while increasing the reliability of the fastening system. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is an exploded view of the present invention;

[0021] Figure 3 This is a schematic diagram of the base structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the track gauge buckle structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of embodiment 2 of the base of the present invention. Detailed Implementation

[0024] like Figure 1 and Figure 2 The fastener shown includes a pre-embedded sleeve 1, which is embedded in the sleeper. The fastener also includes a base 2, a gauge plate 3, and a spiral spike 4. The base 2 is mounted on the sleeper, and the gauge plate 3 is mounted on the base 2. Both the base 2 and the gauge plate 3 have through holes for the spiral spike 4 to pass through. Figure 4 As shown, the gauge plate 3 is provided with adjustment slots 5. At least two adjustment slots 5 are provided on the gauge plate 3. Both adjustment slots 5 can adjust the angle of the gauge plate 3 and press it against the bottom of the rail, thus serving as a gauge block and pressing the rail bottom. The spiral spike 4 passes through the gauge plate 3 and the base 2 and connects to the pre-embedded sleeve 1, thereby fixing the base 2 and pressing the gauge plate 3 against the rail bottom. The adjustment slots 5 are mainly used for adjustment at the contact points with the side of the rail bottom. Therefore, in order to achieve different gauge adjustments with the same gauge plate 3, the distance between the contact points of each adjustment slot 5 and the side of the rail bottom and the center of the spiral spike 4 is different. This allows for gauge adjustment by replacing different adjustment slots 5. Furthermore, this design, which makes the gauge plate 3 function as a gauge block, reduces the number of parts involved in the clamping process, improves overall integrity, facilitates adjustment, and reduces later maintenance costs.

[0025] Since the gauge plate 3 needs to be rotated and positioned so that the corresponding adjustment slot 5 aligns with the bottom of the rail for fastening, positioning components are provided on the base 2 and the gauge plate 3 to achieve positioning of the gauge plate 3. Specifically, as follows... Figure 3 and Figure 4 The embodiment given further illustrates this point. A positioning post 6 is provided on the base 2, and a positioning groove 7 is provided on the gauge plate 3. When adjusting the gauge, the required adjustment slot 5 is aligned with the rail, and then the gauge plate 3 is pressed onto the base 2, causing the positioning post 6 to insert into the positioning groove 7. This achieves positioning of the gauge plate 3, while ensuring that the position of the adjustment slot 5 that mates with the rail matches the bottom of the rail, and preventing rotation of the gauge plate 3 when tightening the spiral rail spike 4. To further improve the limiting effect, a limiting groove 8 is also provided on the base 2, allowing one side of the gauge plate 3 to be engaged into the limiting groove 8 for positioning.

[0026] The track gauge plate 3 described above is provided with at least two adjustment slots 5, so that the track gauge of the rail can be adjusted by changing different adjustment slots 5, such as... Figure 4The diagram illustrates a design with four adjustment slots 5 on a gauge plate 3. The gauge plate 3 has a cross-shaped cross section, with adjacent adjustment slots 5 located on two perpendicular surfaces. This allows for four gauge adjustment sizes; simply rotate the adjustment slots 5 on different surfaces until they align with the rail and engage with the bottom of the rail. This is just one embodiment; in practice, to achieve more adjustments, three, five, or six adjustment slots 5 can be added to the gauge plate 3. The corresponding structural designs are not shown in the diagram; please refer to the reference section. Figure 4 The structure places each adjustment slot 5 on a different side of the gauge plate 3, and the position of the adjustment slot 5 can be adjusted by rotating the gauge plate 3.

[0027] To ensure a more even distribution of pressure from the spiral spike 4 to the gauge plate 3, and to prevent excessive pressure due to an insufficient contact area between the spiral spike 4 and the gauge plate 3, thus avoiding damage to the gauge plate 3, Figure 1 and Figure 2 As shown, a pressure plate 9 is also provided on the upper surface of the gauge plate 3. The contact area between the pressure plate 9 and the gauge plate 3 is large enough to evenly transfer the pressure of the spiral spike 4 to the gauge plate 3. Of course, in actual use, this scheme is not limited to reduce the pressure of the spiral spike 4 on the gauge plate 3. Flange bolts can also be used as spiral spikes to increase the contact area, or spring strips in traditional fasteners can be used for tightening.

[0028] like Figure 1 As shown, to avoid excessive lateral shear force on the spiral spike 4, a shoulder 10 is provided on the outside of the base 2, which is close to the top of the sleeper. When the fastener is subjected to lateral force, it is transmitted to the sleeper through the shoulder 10, thereby reducing the lateral force acting directly on the spiral spike 4.

[0029] like Figure 1 and Figure 2 In the embodiment shown, two bases 2 are respectively placed on both sides of the rail. To increase the friction between the base 2 and the sleeper and prevent the base 2 from rotating when tightening the rail spikes, a rough surface or protrusion is provided on the bottom of the base 2 to fit into the sleeper. Furthermore, for better overall integrity and positioning, such as... Figure 5 As shown, the two bases 2 can be made into a single unit, with their bottoms connected by a flat plate, and the steel rails directly mounted on the plate. From the above structure, it can be seen that the base 2 can be set up independently (e.g., Figure 3 ) or connected together to form a whole (such as Figure 5Therefore, when the base 2 is set alone, the assembly consisting of the embedded sleeve 1, base 2, gauge plate 3 and spiral spike 4 on one side can be considered as a complete fastener; while when two bases 2 are connected by a flat plate to form a whole, a complete fastener includes two bases 2 as a whole and the embedded sleeve 1, base 2, gauge plate 3 and spiral spike 4 that cooperate with the two bases 2.

Claims

1. A track fastener, comprising a pre-embedded sleeve (1) embedded in a sleeper, characterized in that: It also includes a base (2), a gauge plate (3) and a spiral rail spike (4), wherein the base (2) is provided with a pair placed on both sides of the rail; The track gauge fastener (3) is set on the base (2). Both the base (2) and the track gauge fastener (3) are provided with through holes for the spiral rail spike (4) to pass through. The spiral rail spike (4) is connected to the pre-embedded sleeve (1) to fix the base (2) and the track gauge fastener (3). The track gauge fastener (3) is provided with at least two adjustment slots (5) that can be pressed against the rail bottom to adjust the track gauge. The distance between the contact part of each adjustment slot (5) and the side of the rail bottom and the center of the spiral rail spike (4) is different. The track gauge fastener (3) is rotated to make different adjustment slots (5) cooperate with the rail bottom to achieve track gauge adjustment. Positioning elements are provided on the base (2) and the gauge plate (3) to position the gauge plate (3). After the position of the adjustment slot (5) on the gauge plate (3) is adjusted, the positioning elements limit the gauge plate (3) to achieve positioning and prevent rotation. The positioning elements include a positioning post (6) on the base (2) and a positioning groove (7) on the gauge plate (3). The positioning post (6) can be inserted into the positioning groove (7) to achieve positioning of the gauge plate (3) on the base (2). A limiting groove (8) is provided on the base (2). One side of the gauge plate (3) can be inserted into the limiting groove (8) to achieve positioning. The gauge plate (3) is provided with four adjustment slots (5), and two adjacent adjustment slots (5) are located on two mutually perpendicular surfaces of the gauge plate (3).

2. A track fastener according to claim 1, characterized in that: The track gauge buckle plate (3) is provided with 3, 5 or 6 adjustment slots (5).

3. A track fastener according to claim 1, characterized in that: A pressure plate (9) is also provided on the upper surface of the track gauge buckle plate (3).

4. A track fastener according to claim 1, characterized in that: The bottoms of the two bases (2) are connected together to form a whole.

5. A track fastener according to claim 1 or 4, characterized in that: A shoulder (10) is provided on the outside of the base (2) to abut against the top of the sleeper.

6. A track gauge fastener plate according to claim 1, characterized in that: The gauge plate (3) has a cross-shaped cross section and four adjustment slots (5) are provided on the gauge plate (3). The four adjustment slots (5) are located on the lower end face of the cross shape, and two adjacent adjustment slots (5) are located on two mutually perpendicular faces of the gauge plate (3). The gauge plate (3) has through holes for installing spiral rail spikes (4). The distance between the contact part of each adjustment slot (5) and the side of the rail base and the axis of the through hole is different. The gauge plate (3) can rotate around the spiral rail spikes (4) to make different adjustment slots (5) fit with the bottom of the rail. The track gauge buckle (3) is provided with a positioning groove (7), and the positioning groove (7) is located inside the adjustment groove (5). After the position of the adjustment groove (5) on the track gauge buckle (3) is adjusted, the positioning groove (7) limits the track gauge buckle (3) to achieve positioning and anti-rotation.

7. A track gauge fastener plate according to claim 6, characterized in that: After the position of the adjustment slot (5) on the gauge buckle (3) is adjusted, the gauge buckle (3) is positioned and prevented from rotating by limiting the four side protrusions of the cross shape.

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