Bolt sleeve for adjusting horizontal positions of rail fastener and steel rail

Abstract

The utility model discloses a bolt sleeve for adjusting the horizontal position of a track fastener and a steel rail, which relates to the technical field of track traffic and comprises a sleeve body and a sleeve cover plate which are rotatably arranged on an installation foundation platform, the top of the sleeve body is provided with a bolt hole for installing a bolt, and the sleeve cover plate is arranged at the top of the sleeve body. A through hole matched with the bolt hole in position is formed in the sleeve cover plate, the center line of the bolt hole and the center line of the sleeve body are eccentrically arranged so that the distance between the center of the bolt hole and the edge of the sleeve body can be changed into a variable distance from a fixed distance, and a mounting hole groove used for embedding the sleeve cover plate is formed in the mounting foundation platform; distance adjusting marks are evenly distributed on the sleeve cover plate around the axis, indication marks matched with the distance adjusting marks are arranged on the installation foundation platform, and on the premise that a sleeper or roadbed slab mold is not changed, horizontal position adjustment of the fastener and the steel rail on the prefabricated long sleeper or roadbed slab is achieved by rotating the eccentric bolt sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to a bolt sleeve used for adjusting the horizontal position of a rail fastener and a rail. Background Art

[0002] When a train vehicle enters a curved track from a straight line, there is an inertia effect to maintain its original travel direction. It will only travel along the curved track under the guidance of the outer rail. In order to avoid excessive wheel-rail resistance when the train passes through the curved track, reduce the wear of the wheel flange and rails, and reduce the maintenance costs of vehicles and track equipment, a gauge that is appropriately wider than the standard gauge should be set on a curved track with a smaller radius of curvature. In the prefabricated long sleeper or ballast plate section, the mold of the sleeper or ballast plate is unified, the bolt sleeve structure is unified, and the gauge is designed according to the standard gauge. If the gauge needs to be adjusted, it is generally adjusted through fasteners. This design has the following problems: First, the use of fasteners to adjust the gauge when laying the new line will cause the later gauge adjustment capability to fail to meet the design requirements; second, the fasteners of some models have limited gauge adjustment capabilities and cannot meet the requirements of the curved section gauge adjustment; third, the fastener construction requirements on the line are not unified or the parts are not unified (such as the gauge block model), which brings unnecessary troubles to the on-site construction and later maintenance.

[0003] At present, there is no design in the market that can preset non-standard track gauges at the sleeper or ballast slab level. Utility Model Content

[0004] In order to solve the problems raised in the background technology, the utility model discloses a bolt sleeve for adjusting the horizontal position of rail fasteners and rails. Without changing the mold of the sleeper or the ballast plate, the product realizes the horizontal position adjustment of the fasteners and rails on the prefabricated long sleeper or the ballast plate by rotating the eccentric bolt sleeve.

[0005] The technical solution adopted by the utility model is: a bolt sleeve for adjusting the horizontal position of rail fasteners and rails, comprising a sleeve body and a sleeve cover plate rotatably arranged on an installation base platform, the top of the sleeve body is provided with a bolt hole for installing the bolt, the sleeve cover plate is arranged on the top of the sleeve body, a through hole matching the position of the bolt hole is provided on the sleeve cover plate, an internal thread matching the bolt is provided inside the bolt hole, an external thread matching the installation base platform is provided on the outer side wall of the sleeve body, the center line of the bolt hole is eccentrically arranged with the center line of the sleeve body, and is used to change the distance from the center of the bolt hole to the edge of the sleeve body from a fixed spacing to a variable spacing, and the installation base platform is provided with a mounting hole groove for embedding the sleeve cover plate; wherein the sleeve cover plate is evenly provided with spacing adjustment marks for indicating the spacing adjustment value around the axis, and the installation base platform is provided with an indication mark matching the spacing adjustment mark; the installation base platform is a sleeper or a track bed plate mold.

[0006] In order to further optimize the utility model, the following technical solutions can be preferably used:

[0007] Preferably, the sleeve cover plate includes a hexagonal positioning portion and a cylindrical portion arranged at the bottom of the positioning portion, the cylindrical portion matches the size of the mounting hole groove of the mounting base platform, and a positioning plate for preventing the positioning portion from rotating is provided on the mounting base platform, and the mounting hole groove is a circular hole.

[0008] Preferably, a plurality of bolt sleeve positioning holes are provided at the top of the sleeve body, and a positioning protrusion cooperating with the bolt sleeve positioning holes is provided at the bottom of the cylindrical portion of the sleeve cover plate.

[0009] Preferably, the bolt sleeve positioning hole is a square hole, and the positioning protrusions are asymmetrically distributed.

[0010] Preferably, a hexagonal positioning portion 2 is provided on the top of the sleeve body, and a positioning slot is provided at the bottom of the mounting base platform corresponding to the mounting hole slot, and the positioning slot cooperates with the positioning portion 2; the sleeve cover plate includes a cylindrical portion 2 and a cylindrical portion 3 eccentrically arranged with the cylindrical portion 2, and the cylindrical portion 3 matches the mounting hole slot.

[0011] The beneficial effects of the utility model are:

[0012] 1. Eccentric bolt casing design

[0013] The traditional bolt hole center structure is changed to an eccentric structure, so that the distance from the center of the bolt hole to the edge of the casing is changed from a fixed spacing to a variable spacing. The top of the casing is equipped with a distance adjustment mark to facilitate on-site confirmation.

[0014] 2. Gauge adjustment design

[0015] The bolt sleeve geometric center position remains unchanged, and it rotates around its geometric center, using the eccentricity of the bolt hole center to achieve track gauge adjustment. It should be noted that for two (or more) bolt sleeves at a fastener node, the relative spacing between the bolt sleeves at the same fastener node must remain unchanged during the track gauge adjustment process, that is, the nail hole spacing remains unchanged.

[0016] 3. Casing fixed installation design

[0017] The purpose of fixing the position of the bolt sleeve and adjusting the track gauge is achieved by limiting the position of the bolt sleeve and the sleeve cover plate or limiting the position of the mold and the bolt sleeve and coordinating the bolt connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall cross-sectional view of the bolt sleeve in the installation state in Example 1;

[0019] Figure 2 This is a schematic diagram of the overall structure of the bolt sleeve in the installation state in Example 1;

[0020] Figure 3 It is a top view of the bolt sleeve in the installation state in Example 1;

[0021] Figure 4 is a schematic structural diagram of the sleeve body in Example 1;

[0022] Figure 5 This is a schematic diagram of the top three-dimensional structure of the casing cover plate in Example 1;

[0023] Figure 6 This is a schematic diagram of the bottom three-dimensional structure of the casing cover plate in Example 1;

[0024] Figure 7 is a top view of the casing cover plate in Example 1;

[0025] Figure 8 This is a schematic diagram of the structure of the installation base platform in Example 1;

[0026] Fig. 9 This is a schematic diagram of the installation of the bolt sleeve long sleeper in Example 1;

[0027] Fig.10 This is a schematic diagram of the bolt sleeve before adjustment from 0 to +2 mm in Example 1;

[0028] Fig.11 This is a schematic diagram of the bolt sleeve after adjustment from 0 to +2 mm in Example 1;

[0029] Fig.12 It is a structural schematic diagram of an existing commonly used casing body;

[0030] Fig.13 is an overall cross-sectional view of the bolt sleeve in the installation state in Example 2;

[0031] Fig.14 A top view of the bolt sleeve in the installation state in Example 2;

[0032] Fig.15 is a schematic structural diagram of the sleeve body in Example 2;

[0033] Fig.16 It is a schematic diagram of the three-dimensional structure of the casing cover plate in Example 2;

[0034] Fig.17 This is a schematic diagram of the structure of the installation base platform in Example 2;

[0035] Fig.18 This is a schematic diagram of the bolt sleeve before adjustment from 0 to +2 mm in Example 2;

[0036] Fig.19 This is a schematic diagram of the bolt sleeve in Example 2 after being adjusted from 0 to +2 mm.

[0037] Among them: 1-installation base platform; 2-casing body; 3-external thread; 4-internal thread; 5-installation hole groove; 6-casing cover plate; 7-bolt hole; 8-positioning hole; 9-positioning protrusion; 10-positioning part one; 11-cylindrical part one; 12-through hole; 13-positioning plate; 14-indicator mark; 15-adjustment mark; 16-bolt; 17-positioning slot; 18-positioning part two; 19-cylindrical part two; 20-cylindrical part three. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0039] Embodiment 1:

[0040] like Figures 1 to 11 As shown, a bolt sleeve for adjusting the horizontal position of rail fasteners and rails comprises a sleeve body 2 and a sleeve cover plate 6 rotatably mounted on a mounting base platform 1, wherein the mounting base platform is a sleeper or a ballast plate mold; a bolt hole 7 for mounting a bolt 16 is provided on the top of the sleeve body 2, the sleeve cover plate 6 is mounted on the top of the sleeve body 2, a through hole 12 matching the position of the bolt hole is provided on the sleeve cover plate 6, the center line of the bolt hole 7 is eccentrically arranged with the center line of the sleeve body 2, and is used to change the distance from the center of the bolt hole to the edge of the sleeve body from a fixed spacing to a variable spacing, and a mounting hole groove 5 for embedding the sleeve cover plate is provided on the mounting base platform 1; wherein an internal thread 4 matching the bolt is provided inside the bolt hole, and an external thread 3 is provided on the outer wall of the sleeve body.

[0041] In order to facilitate precise adjustment, adjustment marks 15 for indicating the spacing adjustment value are evenly distributed around the axis on the sleeve cover plate, and indication marks 14 cooperating with the adjustment marks are designed on the rail sleeper or track bed plate mold; the adjustment marks 15 range from -3, -2, -1, 0, 1, 2, 3, 4, a total of 8 adjustment points, corresponding to different eccentric distances between the center line of the bolt hole and the center line of the sleeve body; the sleeve cover plate includes a hexagonal positioning portion 10 and a cylindrical portion 11 designed at the bottom of the positioning portion, the cylindrical portion matches the size of the mounting hole groove of the mounting base platform, a positioning plate 13 for preventing the positioning portion from rotating is installed on the mounting base platform, and the mounting hole groove 5 is a circular hole; a plurality of positioning holes 8 are opened on the top of the sleeve body 2, and a positioning protrusion 9 cooperating with the positioning holes is designed at the bottom of the cylindrical portion; the positioning hole 8 is a square hole, and the positioning protrusions are asymmetrically distributed; in this embodiment, the sleeve cover plate 6 and the mounting base platform are used to limit the adjusted sleeve body.

[0042] Track gauge adjustment process:

[0043] The bolt sleeve geometric center position remains unchanged, and it rotates around its geometric center, using the eccentricity of the bolt hole center to achieve track gauge adjustment. It should be noted that for two (or more) bolt sleeves at a fastener node, the relative spacing between the bolt sleeves at the same fastener node must remain unchanged during the track gauge adjustment process, that is, the nail hole spacing remains unchanged.

[0044] The single-side rail gauge adjustment is -3 to +4mm, and the two-rail spacing adjustment is -6 to +8mm. When the adjustment values ​​marked on the two nylon sleeves of a set of fasteners are both toward the inner side of the rail (to ensure that the nail hole distance remains unchanged), the actual single-side rail gauge adjustment is the adjustment value indicated by the nylon sleeve toward the inner side of the rail. For specific adjustment values, refer to the following table:

[0045] Table 1 The adjustment amount of the two rails corresponds to the direction of the nylon casing mark

[0046]

[0047] Embodiment 2:

[0048] like Figures 13 to 19As shown, the difference between this embodiment and embodiment 1 is that the fixing method of the sleeve body is different. In embodiment 1, the sleeve cover plate 6 and the mounting base platform are used to limit the rotation of the sleeve body, while in this embodiment, the top of the sleeve body 2 is designed as a hexagonal positioning portion 2 18, and a positioning card slot 17 is opened at the bottom of the mounting base platform 1 corresponding to the mounting hole slot, and the positioning card slot is matched with the positioning portion 2 18; the sleeve body is positioned by the positioning card slot, wherein the sleeve cover plate includes a cylindrical portion 2 19 and a cylindrical portion 3 20 eccentrically arranged with the cylindrical portion 2, and the cylindrical portion 3 20 matches the mounting hole slot; similarly, the track gauge is adjusted by changing the distance between the outer dimension center of the sleeve body and the center of the bolt hole.

[0049] A method for adjusting the distance using an adjustable distance bolt sleeve comprises the following steps:

[0050] Step 1: Calculate the distance value of track width adjustment according to the curvature radius of the curved track;

[0051] Step 2: According to the distance value calculated in step 1, adjust the two matching bolt sleeves on the track plate. The adjustment process is as follows: rotate the bolt sleeve until the distance between the center of the bolt hole and the center of the outer dimension of the bolt sleeve after rotation matches the distance value in step 1 (refer to Table 1 for specific track gauge adjustment amount); during the adjustment process of step 2, it is necessary to ensure that the center distance of the bolt holes of the two matching bolt sleeves remains unchanged in the horizontal and vertical fixing nail hole distances.

[0052] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0053] The above are preferred implementations of the present utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A bolt sleeve for adjusting the horizontal position of rail fasteners and rails, comprising a sleeve body and a sleeve cover plate rotatably arranged on a mounting base platform, a bolt hole for installing a bolt is opened on the top of the sleeve body, the sleeve cover plate is arranged on the top of the sleeve body, and a through hole matching the position of the bolt hole is opened on the sleeve cover plate, characterized in that: An internal thread matching the bolt is provided inside the bolt hole, an external thread matching the mounting base platform is provided on the outer side wall of the sleeve body, the center line of the bolt hole is eccentrically arranged with the center line of the sleeve body, and is used to change the distance from the center of the bolt hole to the edge of the sleeve body from a fixed spacing to a variable spacing, the mounting base platform is provided with a mounting hole groove for embedding the sleeve cover plate, and the sleeve cover plate is provided with spacing adjustment marks evenly distributed around the axis for indicating the spacing adjustment value, and the mounting base platform is provided with an indication mark matching the spacing adjustment mark; the mounting base platform is a sleeper or a track bed plate mold.

2. A bolt sleeve for adjusting the horizontal position of rail fasteners and rails according to claim 1, characterized in that: The sleeve cover plate includes a hexagonal positioning portion and a cylindrical portion arranged at the bottom of the positioning portion. The cylindrical portion matches the size of the mounting hole groove of the mounting base platform. A positioning plate for preventing the positioning portion from rotating is arranged on the mounting base platform. The mounting hole groove is a circular hole.

3. A bolt sleeve for adjusting the horizontal position of rail fasteners and rails according to claim 2, characterized in that: A plurality of bolt sleeve positioning holes are provided on the top of the sleeve body, and a positioning protrusion matching with the bolt sleeve positioning holes is provided on the bottom of the cylindrical portion of the sleeve cover plate.

4. A bolt sleeve for adjusting the horizontal position of rail fasteners and rails according to claim 3, characterized in that: The bolt sleeve positioning hole is a square hole, and the positioning protrusions are asymmetrically distributed.

5. A bolt sleeve for adjusting the horizontal position of rail fasteners and rails according to claim 1, characterized in that: A hexagonal positioning portion 2 is arranged on the top of the sleeve body, and a positioning slot is arranged at the bottom of the mounting base platform corresponding to the mounting hole slot, and the positioning slot cooperates with the positioning portion 2; the sleeve cover plate includes a cylindrical portion 2 and a cylindrical portion 3 eccentrically arranged with the cylindrical portion 2, and the cylindrical portion 3 matches the mounting hole slot.

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