Guard rail pad arrangement with adjustable flangeway width

Abstract

The utility model relates to rail transit technology, aims at providing a guard rail backing plate device of adjustable width of flangeway, the support backing plate structure of the device includes backing plate structure, rail support plate and eccentric adjusting sleeve, the rail support plate includes rail support base, and the vertical installation wall and vertical support wall fixed on the rail support base, the eccentric adjusting sleeve is the cylindrical step structure formed by fixed cap and bar piece superposition, has the eccentric through hole deviating from the axial center, is equipped with the mounting round hole on the rail support base, and the bar piece of eccentric adjusting sleeve is embedded therein and the size of fixed cap is greater than the mounting round hole, utilizes the bolt of passing into eccentric through hole and will be fixedly installed in the bottom plate with rail support plate, the utility model will be used for supporting the support backing plate structure of guard rail and split into two structures of relatively independent and relatively displaceable, realize fixed installation with bolt and eccentric adjusting sleeve, only need to rotate eccentric adjusting sleeve to change the width size of flangeway, the device structure is simple, and the adjustment is convenient, improves installation, maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to rail transit technology, and in particular to a rail guard plate device with adjustable wheel flange groove width. Background Technology

[0002] As a crucial component of railway tracks, guard rail pads are used to ensure the correct flange groove width between the guard rail and the main rail. The flange groove primarily guides the wheel flange smoothly through the hazardous space of the frog, preventing the wheel from colliding with the frog rail or accidentally entering a different track, thus ensuring safe train operation. During use, the friction between the main rail and guard rail causes wear due to the high-speed passage of wheels, leading to an excessively large flange groove gauge and increasing the risk of derailment. Therefore, the flange groove width must be calibrated and adjusted during both the installation and subsequent maintenance of railway guard rails.

[0003] Existing guardrail pad support structures typically employ an integrated guardrail pad assembly, secured to the guardrail with bolts. Adjusting the flange groove width of the guardrail pad usually involves adding or removing adjustment shims between the guardrail and the guardrail pad assembly. However, vibrations from passing vehicles can cause these shims to shift upwards, potentially leading to collisions and significant safety hazards over time. Some manufacturers have proposed using drilled holes for bolt fixation to prevent shifting. However, this requires removing all bolts from the guardrail each time the flange groove is adjusted. Another approach involves bending the ends of the shims to improve spacing, but these shims are often made of stainless steel, making bending difficult and requiring precise control to meet adjustment requirements. Therefore, current flange groove adjustment solutions suffer from high workload, time-consuming and labor-intensive operations, and high installation and maintenance costs.

[0004] Therefore, it is necessary to propose a completely new rim groove adjustment technology to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a guard rail pad device with adjustable wheel flange groove width.

[0006] To solve the technical problem, the solution of this utility model is: An adjustable flange groove width guard rail pad device is provided, comprising a base plate for supporting and fixing the rail and a support pad structure for supporting the guard rail, the support pad structure being fixedly installed on the base plate; the support pad structure includes a pad structure, a rail support plate, and an eccentric adjustment sleeve; wherein... The pad structure is fixedly installed on the base plate, and the guard rail is supported by the local surface of the pad structure. A rail support plate is movably mounted on a pad structure and adjacent to the supporting surface; the rail support plate includes a rail support base, and a vertical mounting wall and a vertical support wall fixed on the rail support base; a long slot is provided on the vertical mounting wall, and the guard rail is fixed to the outside of the vertical mounting wall by a first bolt passing through the long slot; The eccentric adjustment sleeve is a cylindrical stepped structure formed by the superposition of a fixing cap and a rod. It has an eccentric through hole that is off-center from the axial center. The rail support base is provided with a mounting hole. The rod of the eccentric adjustment sleeve is embedded in the hole and the size of the fixing cap is larger than the mounting hole. The rail support plate is fixedly installed on the base plate by a second bolt that passes through the eccentric through hole.

[0007] As an improved solution, the lateral dimension of the long slot is adapted to the adjustable range of the eccentric adjusting sleeve, so that the movable distance of the first bolt in the long slot is not less than the maximum adjustable range of the eccentric adjusting sleeve.

[0008] As an improved solution, the adjustable range of the eccentric adjusting sleeve refers to the difference between the maximum and minimum distances between its internal eccentric through hole and the edge of the fixing cap.

[0009] As an improved solution, the pad structure and the base plate are provided with sequentially penetrating screw holes or through holes for inserting a second bolt that penetrates and fixes the eccentric adjustment sleeve and the rail support base. The nut size of the second bolt is larger than the diameter of the eccentric through hole.

[0010] As an improved solution, the rail support plate's rail support base, vertical mounting wall, and vertical support wall are integral structures formed by casting.

[0011] As an improved solution, the vertical support wall is a right-angled triangle with two sections, which are respectively connected to the two sides of the vertical mounting wall; both the vertical support wall and the vertical mounting wall are located on the side edge of the rail support base and are connected to each other to form an enclosed structure with a single-sided opening, and the eccentric adjustment sleeve is located on the opening side of the enclosed structure.

[0012] As an improved solution, the pad structure is fixed to the base plate by welding; or, the pad structure is fixed to the base plate using at least two sets of bolt assemblies.

[0013] As an improved solution, the upper surface of the pad structure has a stepped structure, and the rail support plate is installed on the surface below the stepped structure; on the stepped structure, there are raised blocks for supporting the guard rail; on the lower side of the outer edge of the stepped structure, there is a recessed part for pressing against the bottom of the rail.

[0014] As an improved solution, a rubber pad for supporting the bottom of the rail is laid on the middle surface of the base plate; the rubber pad has downwardly extending flanges at both ends along the length of the rail for clamping its body onto the base plate, and the pad structure and the elastic bar base are located on both sides of the rubber pad.

[0015] As an improved solution, the elastic rail base is fixed to the base plate by welding. The third bolt is fitted with its nut into the T-slot of the elastic rail base with the screw facing upward. The elastic rail is fixed to the elastic rail base by the cooperation of the third bolt and nut, so that the two sides of the rail base are firmly pressed by the recessed parts of the elastic rail and the pad structure respectively. A fourth bolt is provided at both ends of the base plate to fix the guard rail pad device on the sleeper.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. Compared with the traditional rail guard plate device that is welded into one piece, this utility model proposes to split the support plate structure used to support the rail into two relatively independent and relatively displaceable structures; at the same time, bolts and eccentric adjustment sleeves are used to achieve fixed installation; when adjustment is needed, the width of the wheel flange groove can be easily changed by simply rotating the eccentric adjustment sleeve.

[0017] 2. While adjusting the eccentric adjustment sleeve, this utility model utilizes the long slots in the vertical mounting wall to achieve adaptive adjustment of the guard rail, ensuring that the relative position between the guard rail and the steel rail does not change, thus preventing instability of the frog structure.

[0018] 3. This invention utilizes the rotation of the eccentric adjusting sleeve to adjust the flange groove width, resulting in a smooth transition without abrupt changes. Compared to traditional methods that involve increasing or decreasing the number of adjusting plates or bending the angle of the plates, this invention offers a more precise adjustment. Therefore, this invention is more conducive to maintaining stable rail operation and preventing damage caused by alterations to the frog structure.

[0019] 4. The device of this utility model has a simple structure and is easy to adjust, which greatly improves the efficiency of railway guardrail installation and maintenance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram (axial view) of using the rail guard plate device of this utility model to clamp the rail.

[0021] Figure 2 for Figure 1 The front view.

[0022] Figure 3 for Figure 1 Top view.

[0023] Figure 4 This is a schematic diagram of the rail support plate.

[0024] Figure 5 This is an axial view of the eccentric adjusting sleeve.

[0025] Figure 6 This is a cross-sectional view of the eccentric adjusting sleeve.

[0026] Figure 7 This is a diagram showing the installation position of the pad structure on the base plate.

[0027] Figure 8 This is a schematic diagram of the rubber pad structure.

[0028] Figure 9 This is a schematic diagram of installing a rubber pad on the base plate.

[0029] Figure 10 This is a schematic diagram of installing the third bolt in the spring clip base.

[0030] Figure 11 This is a diagram showing the initial state of the rail clamping device.

[0031] Figure 12 This is a schematic diagram showing the adjustment status of the guard rail pad device after long-term operation.

[0032] The attached diagram is labeled as follows: 1. Rail; 2. Guard rail; 3. Base plate; 31. Fixing hole; 4. Rail support plate; 41. Long slot hole; 42. Mounting round hole; 5. Eccentric adjustment sleeve; 51. Eccentric through hole; 52. Fixing cap; 53. Rod; 6. First bolt; 7. Second bolt; 8. Pad structure; 9. T-slot; 10. Spring clip; 11. Spring clip base; 12. Third bolt; 13. Fourth bolt; 14. Step structure; 15. Pad block; 16. Rail support base; 17. Vertical mounting wall; 18. Vertical support wall; 19. Rubber pad. Detailed Implementation

[0033] The serial numbers assigned to components in this application, such as "first" and "second," are merely for distinguishing the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used solely for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] 1. Structural Description of the Device

[0036] As shown in the figure, the adjustable wheel flange groove width guard rail pad device of this utility model includes a base plate 3 for supporting and fixing the rail 1, and a support pad structure fixedly installed on the base plate 3 for supporting the guard rail 2. The support pad includes a pad structure 8, a rail support plate 4, and an eccentric adjustment sleeve 5.

[0037] The pad structure 8 is fixedly installed on the base plate 3, and the guard rail 2 is supported by a portion of the surface of the pad structure 8. For example, the pad structure 8 can be fixed to the base plate 3 by welding; or, the pad structure 8 can be fixed to the base plate 3 using at least two sets of bolt assemblies. The upper surface of the pad structure 8 has a stepped structure 14, and the rail support plate 4 is installed on the surface below the stepped structure 14. A shim block 15 is provided on the stepped structure 14 to support the guard rail 2. The shim block 15 can be a separate component or a protrusion extending further from the stepped structure 14 (i.e., integrated with the stepped structure 14 through a casting process). A recessed portion is provided on the lower side of the outer edge of the stepped structure 14 to press against the bottom of the rail 1.

[0038] On the central surface of the base plate 3, a rubber pad 19 is laid to support the rail base of the rail 1 and to provide shock absorption. The rubber pad 19 has downward-extending flanges at both ends, which are used to secure its body along the length of the rail 1 onto the base plate 3, preventing displacement or loosening due to rail 1 vibration. The pad structure 8 and the elastic clip base 11 are respectively arranged on both sides of the rubber pad 19, with the elastic clip base 11 fixed to the base plate 3 by welding. A T-shaped groove 9 with an upper opening is provided in the middle of the elastic clip base 11, and a third bolt 12 is fitted into it with a nut of a suitable shape, with the bolt threaded upwards through the opening of the T-shaped groove 9. The elastic clip 10 is fixed to the elastic clip base 11 using the nut on the third bolt 12, thus ensuring that both sides of the rail base of the rail 3 are firmly pressed against the elastic clip 10 and the recessed portion of the pad structure 8. Fourth bolts 13 are provided at both ends of the base plate 3 for fixing the rail guard pad device onto the sleeper.

[0039] The rail support plate 4 is movably mounted on the pad structure 8 and is adjacent to the supporting surface (i.e., the stepped structure 14) of the pad structure 8. The rail support plate 4 includes a rail support base 16, and a vertical mounting wall 17 and a vertical support wall 18 fixed to the rail support base 16. An elongated slot 41 is provided in the vertical mounting wall 17, and the guard rail 2 is fixed to the outside of the vertical mounting wall 17 by a first bolt 6 passing through the elongated slot 41.

[0040] As an example, the vertical support wall 18 is a right-angled triangle with two sections, each connected to one side of the vertical mounting wall 17. Both the vertical support wall 18 and the vertical mounting wall 17 are located on the side edge of the rail support base 16, forming a single-sided open enclosure structure. The eccentric adjustment sleeve 5 is located on the open side of this enclosure structure. As an example, the rail support base 16, the vertical mounting wall 17, and the vertical support wall 18 are integral structures formed by casting.

[0041] The eccentric adjusting sleeve 5 is a cylindrical stepped structure formed by the superposition of a fixing cap 52 and a rod 53, with an eccentric through hole 51 offset from the axial center inside. A mounting hole 42 is provided on the rail support base 16, into which the rod 53 of the eccentric adjusting sleeve 5 is embedded, and the size of the fixing cap 52 is larger than the mounting hole 42. The rail support plate 4 is fixedly mounted on the base plate 3 using a second bolt 7 that passes through the eccentric through hole 51. The adjustable range of the eccentric adjusting sleeve 5 refers to the difference between the maximum and minimum distance between the eccentric through hole 51 and the edge of the fixing cap 52. The lateral dimension of the elongated slot 41 is adapted to the adjustable range of the eccentric adjusting sleeve 5, ensuring that the movable distance of the first bolt 6 in the elongated slot 41 is not less than the maximum adjustable range of the eccentric adjusting sleeve 5.

[0042] To facilitate the installation of the rail support plate 4, threaded holes or through holes are provided in sequence on the pad structure 8 and the base plate 3 for inserting the second bolt 7. The second bolt 7 passes through the eccentric adjustment sleeve 5 and the rail support base 16 and is fixed thereto. The size of its nut is larger than the diameter of the eccentric through hole 51.

[0043] 2. Instructions for using the device

[0044] The guide rail pad device of this utility model can be used to adjust the width of the wheel flange groove. The specific adjustment method includes: (1) Assemble and install the components in the guard rail pad device according to the aforementioned positional relationship, so that the bottom of the rail 1 is firmly pressed by the spring strip 10 and the pad structure 8, and the guard rail 2 is fastened to the outside of the vertical mounting wall 17. (2) Adjust the installation direction of the eccentric adjustment sleeve 5 according to the design standard of the wheel flange groove width, and then tighten the second bolt 7 to ensure that the eccentric adjustment sleeve 5 and the rail support plate 4 are installed securely. When designing and selecting, try to make the eccentric adjustment sleeve 5 in the state of maximum adjustable range during the initial installation, that is, the distance between the rail support plate 4 and the upper step structure 14 of the pad structure 8 is the largest; this can obtain more adjustable range to extend the service life of the guard rail 2.

[0045] (3) The width of the wheel flange groove gradually increases with the wear of the rail 1 and the guard rail 2 during operation. The installation direction of the eccentric adjustment sleeve 5 is gradually adjusted according to the changes. The variable radial dimension of the eccentric adjustment sleeve 5 is used to gradually reduce the distance between the rail support plate 4 and the stepped structure 14, thereby adjusting the width of the wheel flange groove. During the adjustment process, the installation position of the guard rail 2 on the rail support plate 4 is adaptively adjusted based on the long slot 41 on the vertical support wall 17, so that the relative position between the guard rail 2 and the rail 1 does not change.

[0046] 3. A specific example

[0047] In this example, the rail guard plate, which is welded as a whole in the conventional technology, is divided into three parts: a base plate, a plate structure 8, and a rail support plate 4. The installation position of the rail support plate 4 is adjustable by using a rotating eccentric adjustment sleeve 5, thereby further realizing the adjustable width of the wheel flange groove between the rail 1 and the guard rail 2.

[0048] Normally, the standard width of the flange groove between rail 1 and guard rail 2 is 42mm. However, wear during use can cause the flange groove gauge to be too large. Based on the design of this utility model, the rail support plate 4 can be displaced by rotating the eccentric adjustment sleeve 5, thereby bringing the gauge up to the design standard. As an example, the eccentric adjustment sleeve 5 has an installation adjustment range of 0 to +2mm and a wear adjustment range of 0 to -6mm, with a maximum adjustable range of 8mm.

[0049] This utility model features a simple and easy-to-operate design. During on-site maintenance, simply loosen the second bolt 7 and rotate the eccentric adjustment sleeve 5 to bring the wheel flange groove gauge to the required standard. Simultaneously, the installation position of the guide rail 2 on the rail support plate 4 can be adjusted adaptively, and finally, the two bolts are tightened. Therefore, compared to existing technologies, this design is simpler in structure, easier to operate, and significantly reduces labor costs for installation and maintenance.

[0050] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the substantive content of this utility model.

Claims

1. A rail guard plate device with adjustable flange groove width, comprising a base plate for supporting and fixing a steel rail and a support plate structure for supporting the rail, wherein the support plate structure is fixedly installed on the base plate; characterized in that, The support pad structure includes a pad structure, a rail brace, and an eccentric adjustment sleeve; wherein... The pad structure is fixedly installed on the base plate, and the guard rail is supported by the local surface of the pad structure. A rail support plate is movably mounted on a pad structure and adjacent to the supporting surface; the rail support plate includes a rail support base, and a vertical mounting wall and a vertical support wall fixed on the rail support base; a long slot is provided on the vertical mounting wall, and the guard rail is fixed to the outside of the vertical mounting wall by a first bolt passing through the long slot; The eccentric adjustment sleeve is a cylindrical stepped structure formed by the superposition of a fixing cap and a rod. It has an eccentric through hole that is off-center from the axial center. The rail support base is provided with a mounting hole. The rod of the eccentric adjustment sleeve is embedded in the hole and the size of the fixing cap is larger than the mounting hole. The rail support plate is fixedly installed on the base plate by a second bolt that passes through the eccentric through hole.

2. The rail guard plate device according to claim 1, characterized in that, The transverse dimension of the long slot is adapted to the adjustable range of the eccentric adjusting sleeve, so that the movable distance of the first bolt in the long slot is not less than the maximum adjustable range of the eccentric adjusting sleeve.

3. The rail guard plate device according to claim 1, characterized in that, The adjustable range of the eccentric adjustment sleeve refers to the difference between the maximum and minimum distances between its internal eccentric through hole and the edge of the fixing cap, and this difference is not less than 8mm.

4. The guardrail pad device according to claim 1, characterized in that, The pad structure and the base plate are provided with sequentially penetrating screw holes or through holes for inserting a second bolt that penetrates and fixes the eccentric adjustment sleeve and the rail support base. The nut size of the second bolt is larger than the diameter of the eccentric through hole.

5. The guardrail pad device according to claim 1, characterized in that, The rail support plate's rail support base, vertical mounting wall, and vertical support wall are an integral structure formed by casting.

6. The guardrail pad device according to claim 1, characterized in that, The vertical support wall is a right-angled triangle and there are two of them, which are connected to the two sides of the vertical mounting wall respectively. The vertical support wall and the vertical mounting wall are both located on the side edge of the rail support base and are connected to each other to form an enclosed structure with a single-sided opening. The eccentric adjustment sleeve is located on the opening side of the enclosed structure.

7. The rail guard plate device according to claim 1, characterized in that, The pad structure is fixed to the base plate by welding; or, the pad structure is fixed to the base plate by at least two sets of bolt assemblies.

8. The rail guard plate device according to any one of claims 1 to 7, characterized in that, The upper surface of the pad structure has a stepped structure, and the rail support plate is installed on the surface below the stepped structure; on the stepped structure, there is a shim block for supporting the guard rail; on the lower side of the outer edge of the stepped structure, there is a recess for pressing against the bottom of the rail.

9. The rail guard plate device according to any one of claims 1 to 7, characterized in that, On the middle surface of the base plate, a rubber pad for supporting the bottom of the rail is laid; the rubber pad has downwardly extending flanges at both ends along the length of the rail for clamping its body onto the base plate, and the pad structure and the elastic bar base are located on both sides of the rubber pad.

10. The rail guard plate device according to any one of claims 1 to 7, characterized in that, The elastic rail base is fixed to the base plate by welding. The third bolt is fitted with its nut into the T-slot of the elastic rail base with the screw facing upward. The elastic rail is fixed to the elastic rail base by the cooperation of the third bolt and nut, so that the two sides of the rail base are firmly pressed by the recessed parts of the elastic rail and the pad structure. A fourth bolt is provided at both ends of the base plate to fix the guard rail pad device on the sleeper.

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