Steel rail welded joint repairing device

Abstract

The utility model provides a steel rail welding joint repairing device which is used for being fixed in a welding joint area of a steel rail and comprises two clamping plates and a clamp. The two clamping plates are used for being arranged on the two sides of a welding joint area in pairs, the inner side faces, facing a steel rail, of the clamping plates are provided with auxiliary bonding layers, the auxiliary bonding layers adhere to the side faces of the steel rail, and welding rib containing grooves are formed in the inner side faces of the clamping plates. The welding rib containing groove is located in the middle of the clamping plate in the length direction and used for containing a welding rib of a welding joint of the steel rail. When the clamping plates are glued to the side face of the steel rail, a gap is formed between the welding rib containing groove and the welding rib, and the ratio of the width of the gap to the groove depth of the welding rib containing groove is 1 / 10-9 / 10 in the grooving direction of the welding rib containing groove. The clamps are used for abutting against the outer side faces, back on to the steel rail, of the two clamping plates so that the two clamping plates can be tightly pressed and bonded to the two sides of the steel rail.

Description

Technical Field

[0001] The utility model relates to the technical field of rail repair, in particular to a rail welding joint repair device. Background Art

[0002] With the continuous growth of railway capacity and the demand for faster train speeds, major railway lines in my country are now adopting seamless rails—short rails are welded together. my country also has the longest mileage of seamless rails in the world. Rail welding is often completed on-site. Due to the influence of the construction environment and conditions, welded joints often become damaged or severely flawed (commonly known as "severely damaged") after completion or after a period of use. To ensure driving safety, such situations require timely repair. Generally, damaged or severely flawed welded joints are sawed off and replaced with new rails. This method not only has high maintenance costs, but also has many disadvantages such as complex construction and difficulty in timely repair. Utility Model Content

[0003] A main purpose of the present invention is to overcome at least one defect of the above-mentioned prior art and provide a rail welding joint repair device with low maintenance cost, convenient construction and high repair quality.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] According to one aspect of the utility model, a rail welding joint repair device is provided, which is used to be fixed to the welding joint area of the rail, wherein the rail welding joint repair device includes two clamps and a clamp; the two clamps are used to be arranged in pairs on both sides of the welding joint area, and the inner side surfaces of the clamps facing the rails have an auxiliary adhesive layer, which can be glued to the side surfaces of the rails, and the inner side surfaces of the clamps are provided with welding rib accommodating grooves; the welding rib accommodating grooves are located in the middle of the clamps in the length direction, and are used to accommodate the welding ribs of the welding joint of the rail; wherein, when the clamps are glued to the side surfaces of the rails, there is a gap between the welding rib accommodating grooves and the welding ribs, and along the slotting direction of the welding rib accommodating grooves, the ratio of the width of the gap to the groove depth of the welding rib accommodating grooves is 1 / 10 to 9 / 10; the clamp is used to press against the outer side surfaces of the two clamps facing away from the rails to press the two clamps tightly and bond them to both sides of the rail.

[0006] According to one embodiment of the present invention, the cross-section of the rail is in the shape of an "I", and the inner side surface of the clamping plate matches the shape of the side surface of the rail; wherein, the extension direction of the weld rib accommodating groove matches the shape of the side surface of the rail, so that when the clamping plate is glued to the side surface of the rail, there is the gap between the groove wall and the weld rib at any position of the weld rib accommodating groove.

[0007] According to one embodiment of the present invention, a first reference plane is defined, which is perpendicular to the length direction of the rail and parallel to the height direction; wherein, on the first reference plane, the positive projection figure of the weld rib accommodating groove is in a "C" shape, and the two ends of the weld rib accommodating groove in the height direction are respectively opened on the outer side of the splint facing away from the rail.

[0008] According to one embodiment of the present invention, the auxiliary adhesive layer is made of a polymer resin.

[0009] According to one embodiment of the present invention, a second reference plane is defined, which is parallel to the length direction of the rail and perpendicular to the height direction; wherein, with the second reference plane as the cutting plane, the cross-section of the weld rib accommodating groove is in the shape of a circular arc.

[0010] According to one embodiment of the present invention, the welding rib accommodating groove is located in the middle position of the inner side surface of the splint along the length direction of the splint; and / or the splint is provided with reinforcing ribs, which are provided on the outer side surface of the splint facing away from the rail, and the reinforcing ribs extend along the length direction.

[0011] According to one embodiment of the present utility model, the splint is provided with at least two construction holes, which penetrate the splint along the thickness direction, and are used to cooperate with construction equipment to realize the lifting, alignment and assembly of the splint; wherein, in the length direction of the splint, the construction holes are provided on both sides of the weld rib accommodating groove, and the construction holes are staggered with the weld rib accommodating groove.

[0012] According to one embodiment of the present invention, at least two construction holes of the same number are provided on both sides of the welding bar accommodating groove in the length direction, and the construction holes on the clamping plate are evenly spaced.

[0013] According to one embodiment of the present invention, the clamp includes a base and a pressure bolt pair, the base has a base and two spaced clamping arms, the two clamping arms are respectively connected to the two ends of the base; wherein: the pressure bolt pair is provided on each of the two clamping arms, when the clamping plate is glued to the side of the rail, the base is located below the rail, the two clamping arms are respectively located on the opposite outsides of the two clamping plates, and each end of the bolts of the two pressure bolt pairs is respectively in contact with the two clamping plates facing away from the rail. The outer side surface of the rail to achieve the compression and bonding of the two clamping plates on the rail; or, the pressure bolt pair is provided on one of the clamping arms, and the pressing protrusion is provided on the other clamping arm. When the clamping plate is glued to the side surface of the rail, the base is located below the rail, and the two clamping arms are respectively located on the relatively outer sides of the two clamping plates, and one end of the bolt of the pressure bolt pair and one end of the pressing protrusion respectively abut against the outer side surfaces of the two clamping plates facing away from the rail to achieve the compression and bonding of the two clamping plates on the rail.

[0014] According to one embodiment of the present invention, the base includes two assemblies, each assembly includes a clamping arm and a bottom assembly part, the clamping arm is connected to one end of the bottom assembly part, and the other end of each of the two bottom assembly parts has a splicing structure with matching shape, and the two bottom assembly parts are spliced together via the splicing structure to form the base.

[0015] From the above technical solution, it can be seen that the advantages and positive effects of the rail weld joint repair device proposed by the utility model are:

[0016] The rail weld joint repair device proposed in the present invention features a weld bar accommodating groove on the inner side of a clamping plate. When the clamping plate is glued to the side of the rail, the weld bar accommodating groove accommodates the weld bar, and a gap is formed between the weld bar accommodating groove and the weld bar. The ratio of the gap width to the depth of the weld bar accommodating groove is 1 / 10 to 9 / 10. Through this structural design, the present invention achieves repair by gluing the clamping plate to the rail. Compared to existing repair solutions that require replacing new rails, the present invention reduces repair costs and is more convenient to construct. Furthermore, the weld bar accommodating groove prevents structural interference between the clamping plate and the weld bar, ensuring the clamping plate's proper positioning on the rail, thereby improving the repair quality of the rail weld joint repair device. Furthermore, through the rational structural design of the weld bar accommodating groove, the present invention maintains the width of the gap between the weld bar accommodating groove and the weld bar within a reasonable range, preventing the clamping plate from contacting the weld bar due to an excessively narrow gap width, while also preventing the clamping plate from becoming excessively thick due to an excessively wide gap width. This reduces component material costs and eases repair difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The various objects, features, and advantages of the present invention will become more apparent upon consideration of the following detailed description of preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings are merely illustrative illustrations of the present invention and are not necessarily drawn to scale. In the accompanying drawings, like reference numerals denote identical or similar components.

[0018] Figure 1 is a schematic plan view of a rail weld joint repairing device according to an exemplary embodiment;

[0019] Figure 2 and Figure 3 They are Figure 1 Schematic plan views of the splint shown in two perspectives;

[0020] Figure 4 yes Figure 1 The schematic plan view of the rail weld joint repairing device when assembled on the rail;

[0021] Figure 5 It is along Figure 4 The cross-sectional view made by the straight line AA in the figure;

[0022] Figure 6 and Figure 7 Along Figure 4 Schematic diagram of the cross section made by the straight line BB and the straight line CC;

[0023] Figure 8 is a schematic plan view of a rail weld joint repair device according to another exemplary embodiment; (based on Figure 1 , with construction holes)

[0024] Figure 9 is a cross-sectional schematic diagram of a rail weld joint repair device assembled on a rail according to another exemplary embodiment; (based on Figure 6 , the clamp has bolts on only one side)

[0025] Figure 10 FIG. 1 is a top view of a clamp of a rail weld joint repairing device according to another exemplary embodiment.

[0026] The following are the descriptions of the reference numerals:

[0027] 100. Rail welding joint repair device;

[0028] 110. Splint;

[0029] 111. Welding bar receiving groove;

[0030] 112. Reinforcement;

[0031] 113. Construction holes;

[0032] 114. Auxiliary bonding layer;

[0033] 121. Base;

[0034] 1211. Base;

[0035] 1212. Clamping arm;

[0036] 12121. Press against the bulge;

[0037] 122.Pressure bolt pair;

[0038] 1221. Bolt;

[0039] 1222. Nut;

[0040] 123. Assembly;

[0041] 1231. Bottom assembly;

[0042] 12311. Splicing structure;

[0043] 200. Rails;

[0044] 210. Welding reinforcement;

[0045] D. width;

[0046] G. Gap;

[0047] H. Groove depth. DETAILED DESCRIPTION

[0048] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various variations in different embodiments without departing from the scope of the present invention, and the description and drawings are essentially for illustrative purposes and are not intended to limit the present invention.

[0049] In the following description of different exemplary embodiments of the present invention, reference is made to the accompanying drawings, which form a part of the present invention and in which different exemplary structures, systems and steps that can implement various aspects of the present invention are shown by way of example. It should be understood that other specific schemes of components, structures, exemplary devices, systems and steps can be used, and structural and functional modifications can be made without departing from the scope of the present invention. Moreover, although the terms "above", "between", "within" and the like may be used in this specification to describe different exemplary features and elements of the present invention, these terms are used herein only for convenience, such as according to the directions of the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of the present invention.

[0050] See Figure 1 , which representatively illustrates a schematic plan view of the rail 200 welded joint repair device 100 proposed in the present invention. In this exemplary embodiment, the rail 200 welded joint repair device 100 proposed in the present invention is described using the example of repairing and positioning a rail 200 after re-welding following a break. Those skilled in the art will readily appreciate that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to apply the relevant designs of the present invention to other types of repair and positioning processes. Such modifications remain within the scope of the principles of the rail 200 welded joint repair device 100 proposed in the present invention.

[0051] like Figure 1 As shown, in one embodiment of the present invention, the rail 200 weld joint repair device 100 proposed by the present invention is used to be fixed to the weld joint area of the rail 200. The rail 200 weld joint repair device 100 includes two clamps 110 and a clamp. Figures 2 to 7 , Figure 2 and Figure 3 1 and 2 represent schematic plan views of the splint 110 at two viewing angles, wherein Figure 2 Specifically shown is the outer side of the splint 110, Figure 3 Specifically shown is the inner side of the splint 110; Figure 4 2 is a representative plan view of the rail 200 weld joint repairing device 100 when assembled on the rail 200; Figure 5 The representative diagram along Figure 4 The cross-sectional view made by the straight line AA in the figure; Figure 6 and Figure 7 The following are representative examples of the Figure 4 The following is a cross-sectional view of the straight line BB and the straight line CC. In conjunction with the above drawings, the structure, connection mode and functional relationship of the main components of the rail 200 welded joint repair device 100 proposed by the present invention are described in detail.

[0052] like Figures 1 to 7As shown, in one embodiment of the present invention, two clamping plates 110 are arranged in pairs on both sides of the welded joint area of the rail 200. The inner side surfaces of the clamping plates 110 facing the rail 200 have an auxiliary adhesive layer, which can be glued to the side surface of the rail 200. For example, the auxiliary adhesive layer can be glued to the rail 200 by applying an adhesive layer. The inner side surfaces of the clamping plates 110 are provided with a weld bar receiving groove 111. The weld bar receiving groove 111 is located in the middle of the clamping plates 110 in the longitudinal direction and is used to receive the weld bar 210 of the welded joint of the rail 200. The groove wall of the weld bar receiving groove 111 may or may not have the auxiliary adhesive layer. On this basis, when the splints 110 are glued to the sides of the rail 200, a gap G is defined between the weld bar receiving groove 111 and the weld bar 210. Along the groove direction of the weld bar receiving groove 111, the ratio of the width D of the gap G to the groove depth H of the weld bar receiving groove 111 is 1 / 10 to 9 / 10, for example, 1 / 10, 1 / 5, 2 / 5, 1 / 2, 3 / 5, 3 / 4, 4 / 5, 9 / 10, etc. A clamp is used to press against the outer sides of the two splints 110 facing away from the rail 200 to press and bond the two splints 110 to the sides of the rail 200. The clamp applies pressure to the two splints 110, allowing the splints 110 to adhere to the rail 200 via the auxiliary adhesive layer. Through the above-described structural design, the present invention achieves repair by gluing the splints 110 to the rail 200. Compared to existing repair solutions that require replacing new rails, the present invention can reduce maintenance costs and is more convenient to construct. On this basis, the present invention can utilize the weld bar accommodating groove 111 to avoid structural interference between the splint 110 and the weld bar 210, thereby ensuring the positioning effect of the splint 110 on the rail 200, and thus improving the repair quality of the rail 200 weld joint repair device 100. Furthermore, through the reasonable structural design of the weld bar accommodating groove 111, the present invention can maintain the width of the gap G between the weld bar accommodating groove 111 and the weld bar 210 within a relatively reasonable range, thereby preventing the width of the gap G from being too small, which could cause the splint 110 and the weld bar 210 to come into contact, and at the same time preventing the width of the gap G from being too large, which could cause the thickness of the splint 110 to be too large, thereby reducing the material cost of the components and reducing the difficulty of maintenance. Specifically, the present invention utilizes the weld bar accommodating groove 111 to avoid and accommodate the weld bar 210. In contrast, if a splint structure is used in which no weld rib receiving groove 111 is provided on the side facing the rail 200, such a splint cannot be installed on the weld joint. This is because the presence of the weld rib 210 causes such a splint to be unable to fit with the rail 200. Even if such a splint is reluctantly installed, the upper edge of the splint will exceed the railway limit, and the wheel flange will ride on the splint when the train passes, causing a safety accident.Furthermore, the weld rib accommodating groove 111 of the present invention is designed with a gap G with the weld rib 210, rather than designing the weld rib accommodating groove 111 to be completely consistent with the shape of the weld 210 (i.e., a contoured design). Therefore, the present invention does not need to use machining to process the weld rib accommodating groove 111, but can use methods such as molding (i.e., opening a mold and heating and pressing). This avoids the problem of poor structural strength of the splint 110 caused by machining the weld rib accommodating groove 111, and the machining method is not conducive to mass production.

[0053] like Figure 6 and Figure 7 As shown, in one embodiment of the present invention, the cross-section of the rail 200 can be roughly I-shaped, and the inner side surface of the clamping plate 110 matches the shape of the side surface of the rail 200. Furthermore, the extension direction of the weld bar accommodating groove 111 can match the shape of the side surface of the rail 200, so that when the clamping plate 110 is adhered to the side surface of the rail 200, a gap G is maintained between the groove wall of the weld bar accommodating groove 111 and the weld bar 210 at any position. Through this structural design, the present invention can further prevent structural interference between the clamping plate 110 and the weld bar 210, further improving the repair quality of the rail 200 weld joint repair device 100.

[0054] like Figure 6 and Figure 7 As shown, based on the structural design that matches the extension direction of the weld bar accommodating groove 111 with the shape of the side surface of the rail 200, in one embodiment of the present invention, a first reference plane is defined, which is perpendicular to the length direction of the rail 200 and parallel to the height direction. On this basis, on the first reference plane, the orthographic projection of the weld bar accommodating groove 111 can be roughly "C"-shaped, and the two ends of the weld bar accommodating groove 111 in the height direction are respectively open on the outer side of the clamping plate 110 facing away from the rail 200. Through the above-mentioned structural design, the present invention can further avoid structural interference between the clamping plate 110 and the weld bar 210, further improving the repair quality of the rail 200 weld joint repair device 100.

[0055] like Figure 5 As shown, in one embodiment of the present invention, a second reference plane is defined, which is parallel to the length direction of the rail 200 and perpendicular to the height direction. On this basis, with the second reference plane as the cutting plane, the cross-section of the weld bar accommodating groove 111 can be arc-shaped. Through the above-mentioned structural design, the present invention can further avoid structural interference between the splint 110 and the weld bar 210, and further improve the repair quality of the rail 200 weld joint repair device 100. In some embodiments, the cross-section of the weld bar accommodating groove 111 can also be other shapes, such as but not limited to rectangle, triangle, etc., and is not limited to this embodiment.

[0056] Furthermore, both ends of the welding bar receiving groove 111 contacting the rail 200 may be provided with chamfer structures, such as arc chamfers or bevel chamfers, to avoid the presence of sharp corners on the contact surface between the splint 110 and the rail 200 .

[0057] like Figure 3 As shown, in one embodiment of the present invention, the weld bar receiving groove 111 can be located in the middle of the inner side surface of the clamping plate 110 along the length direction of the clamping plate 110. Through the above structural design, the present invention can ensure that the lengths of the portions of the clamping plate 110 corresponding to the weld bar 210 on both sides are roughly equal, thereby achieving a more uniform repair positioning effect on the rail 200 and further improving the repair quality.

[0058] In one embodiment of the present invention, the specific shape and size of the weld rib accommodating groove 111 can be designed according to the geometric dimensions of the weld rib 210 of the weld joint of the rail 200 and the required gap G size. Specifically, the weld rib accommodating groove 111 can be formed by molding to meet the optimal mechanical properties and enable correct installation, for example, by calculating using a Fourier series method.

[0059] In one embodiment of the present invention, the material of the auxiliary bonding layer can be a polymer resin. Accordingly, the splint 110 can be made of polymer resin, polymer oil-free untwisted glass fiber, corundum and 42CrMo alloy steel, and the splint 110 made in this way is a polymer composite plate. Through the above design, the splint 110 can obtain the best bonding interface when bonding with the rail 200. At the same time, its composite layer has a hardness equivalent to that of the alloy steel matrix, and the composite layer has considerable flexibility, which can effectively offset internal stress during the bonding process. In the process of repairing the welded joint of the rail 200, a clamp can be used to pressurize the splint 110 to complete the bonding. The damage to the welded joint of the rail 200 can be repaired without sawing the rail 200, inserting a short rail, or drilling screw holes in the rail 200. The clamp will not bend or deform when applying pressure to the splint 110, and the repair will not affect mechanized tamping. The repaired welded joint can meet the standards of a flash welding joint.

[0060] Specifically, the base of the splint 110 can be a 42crmo alloy steel splint 110 that has been subjected to a quenching and tempering treatment, and the bonding surface between the splint 110 and the rail 200 (i.e., the inner surface mentioned above) can be an auxiliary bonding layer that is composited by polymer resin, polymer oil-free and untwisted glass fiber, and corundum after pressurization and electron beam curing or heat curing, and then subjected to a demolding treatment. The Brinell hardness of the surface of the auxiliary bonding layer is greater than or equal to 320, the lap shear strength of the selected polymer resin is greater than or equal to 35MPa, and the floating roller peeling strength is greater than or equal to 5.5kN / m. Accordingly, the present invention increases the hardness while ensuring that the flexibility of the auxiliary bonding layer can effectively offset the internal stress, and effectively prevents burrs from piercing the auxiliary bonding layer. In addition, the present invention uses a composite curing agent and corundum, thereby significantly shortening the time to achieve optimal mechanical properties. When the optimal mechanical properties are not achieved, the corundum can provide greater friction resistance, thereby ensuring the repair effect.

[0061] In one embodiment of the present invention, the rail 200 weld joint repair device 100 proposed in the present invention may further include a filling layer, which is used to fill the gap G between the weld bar receiving groove 111 and the weld bar 210. The filling layer may be made of a non-metallic material, such as a foam sponge, and the hardness of the filling layer is less than that of the splint 110. Through the above structural design, the present invention can use the filling layer to fill the gap G, further preventing impurities and moisture from entering the gap G and causing corrosion of the weld bar 210 and the splint 110. At the same time, because the filling layer is a soft material with a lower hardness than the splint 110, it will not affect the repair and positioning effect of the splint 110.

[0062] like Figure 2 、 Figure 6 and Figure 7 As shown, in one embodiment of the present invention, the splint 110 can be provided with reinforcing ribs 112. The reinforcing ribs 112 are provided on the outer side of the splint 110 facing away from the rail 200, and the reinforcing ribs 112 extend along the length direction. Through the above structural design, the present invention can utilize the reinforcing ribs 112 to strengthen the structural strength of the splint 110, further improving the repair quality.

[0063] See Figure 8 , Figure 8 FIG. 1 is a schematic plan view of another exemplary embodiment of a device 100 for repairing a welded joint of a rail 200 that can embody the principles of the present invention.

[0064] like Figure 8As shown, in one embodiment of the present invention, the clamping plate 110 may be provided with at least two construction holes 113, such as, but not limited to, the six construction holes 113 shown in the accompanying drawings. Specifically, the construction holes 113 extend through the thickness of the clamping plate 110 and are used to coordinate with construction equipment to facilitate the lifting, alignment, and assembly of the clamping plate 110. Furthermore, construction holes 113 may be provided on both sides of the weld bar receiving slot 111 along the length of the clamping plate 110, with the construction holes 113 and the weld bar receiving slot 111 being staggered. It should be noted that, unlike the screw holes in the existing solutions for passing bolts when positioning the splint on the rail, the construction holes 113 of the present invention are not used for positioning the splint 110 and the rail 200. The construction holes 113 are only used for lifting, aligning and assembling the splint 110 during construction. For example, when the splint 110 is pressed and bonded to the side of the rail 200 by the clamp, no other positioning or assembly components are passed through the construction hole 113. For another example, the matching position of the clamp on the splint 110 is staggered with the position of the construction hole 113. Through the above structural design, the present invention can further improve the convenience of operation, help improve assembly efficiency, and optimize assembly accuracy.

[0065] like Figure 8 As shown, based on the structural design of the construction holes 113 provided on the splint 110, in one embodiment of the present invention, the weld rib accommodating groove 111 can be provided with at least two (for example but not limited to three as shown in the accompanying drawings) and the same number of construction holes 113 on both sides in the length direction, and the construction holes 113 on the splint 110 can be evenly spaced and arranged.

[0066] like Figure 1 、 Figure 4 、 Figure 6 and Figure 7As shown, in one embodiment of the present invention, the clamp includes a base 121 and a pressure bolt pair 122. The base 121 has a base and two spaced-apart clamping arms 1212, each of which is connected to the two ends of the base. On this basis, the pressure bolt pair 122 is provided on each of the two clamping arms 1212. The pressure bolt pair 122 can, for example, include a bolt 1221 and a nut 1222 that are threaded together. When the clamping plate 110 is glued to the side of the rail 200, the base is located below the rail 200, the two clamping arms 1212 are located on opposite sides of the two clamping plates 110, and one end of the bolt 1221 of the two pressure bolt pairs 122 respectively abuts the outer side of the two clamping plates 110 facing away from the rail 200. By adjusting the nuts 1222, the two bolts 1221 are tightened against the outer side of the two clamping plates 110, thereby achieving a tight bonding of the two clamping plates 110 to the rail 200. Through the above-mentioned structural design, the utility model can use the base 121 with two clamping arms 1212 to arrange paired pressure bolt pairs 122, and use the pressure bolt pairs 122 to push against the two clamping plates 110, thereby realizing the compression and bonding of the clamping plates 110 on both sides of the rail 200. Compared with the existing solution of using bolts to pass through the rail and the clamping plate, the utility model avoids opening holes in the rail 200, and can ensure the structural strength of the rail 200.

[0067] See Figure 9 , Figure 9 The cross-sectional view of the rail 200 welded joint repair device 100 in another exemplary embodiment, which can embody the principle of the present invention, can be referred to in detail in FIG. Figure 6 Of Figure 4 The interception position.

[0068] like Figure 9 As shown, in another embodiment of the present invention, still taking the example of a clamp including a base 121 and a pressure bolt pair 122, the base 121 is provided with the pressure bolt pair 122 only on one clamping arm 1212 thereof, and the other clamping arm 1212 is provided with a pressing protrusion 12121. Accordingly, when the clamping plate 110 is glued to the side of the rail 200, the base is located below the rail 200, the two clamping arms 1212 are respectively located on the opposite outer sides of the two clamping plates 110, and one end of the bolt 1221 of the pressure bolt pair 122 and one end of the pressing protrusion 12121 respectively abut against the outer side surfaces of the two clamping plates 110 facing away from the rail 200, thereby achieving a tight compression and bonding of the two clamping plates 110 to the rail 200. Through the above structural design, the present invention can further simplify the structural complexity of the clamp, reduce the number of parts, and can achieve compression and bonding of the two splints 110 by simply adjusting the nut 1222 of a pressure bolt pair 122, which is beneficial to improving assembly efficiency.

[0069] See Figure 10 , Figure 10 FIG. 1 representatively shows a top view of a clamp of a rail 200 weld joint repairing device 100 in another exemplary embodiment that can embody the principles of the present invention.

[0070] like Figure 10 As shown, in another embodiment of the present invention, still taking the clamp including the base 121 as an example, the base 121 can include two assemblies 123, each assembly 123 including a clamping arm 1212 and a bottom assembly portion 1231, the clamping arm 1212 being connected to one end of the bottom assembly portion 1231, and the other end of each of the two bottom assembly portions 1231 having a matching splicing structure 12311, and the two bottom assembly portions 1231 being spliced together via the splicing structure 12311 to form a base. The shape of the splicing structure 12311 can be, for example, an "S" shape, a zigzag shape, etc. Through the above-mentioned structural design, the present invention can facilitate the arrangement of the base 121 below the rail 200, for example, the two assemblies 123 can be extended from both sides of the rail 200 to the bottom of the rail 200, and then spliced to form the base of the clamp.

[0071] In one embodiment of the present invention, the clamp can be made of bainitic alloy steel through tempering treatment, thereby making the tensile strength of the clamp greater than or equal to 1580 MPa. After the clamp is installed, the width of any part does not exceed the range of 100 mm of the rail bottom extension of the rail 200, and the clamp can be correctly installed on the ballastless sleeper.

[0072] In one embodiment of the present invention, an insulating layer may be provided on the surface of the clamp, wherein both the surface of the base 121 and the surface of the pressure bolt pair 122 may be provided with an insulating layer.

[0073] It should be noted that the rail 200 weld joint repair device 100 shown in the drawings and described in this specification is merely a few examples of the many types of repair devices that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are in no way limited to any details or components of the rail 200 weld joint repair device 100 shown in the drawings or described in this specification.

[0074] In summary, the rail 200 weld joint repair device 100 proposed by the present invention is provided with a weld bar accommodating groove 111 on the inner side surface of the splint 110. When the splint 110 is glued to the side surface of the rail 200, the weld bar accommodating groove 111 can accommodate the weld bar 210, and there is a gap G between the weld bar accommodating groove 111 and the weld bar 210. The ratio of the width of the gap G to the groove depth of the weld bar accommodating groove 111 is 1 / 10 to 9 / 10. Through the above structural design, the present invention uses the splint 110 to be glued to the rail 200 to achieve repair. Compared with the existing repair solution of replacing a new rail, the present invention can reduce maintenance costs and is more convenient to construct. On this basis, the present invention can use the weld bar accommodating groove 111 to avoid structural interference between the splint 110 and the weld bar 210, ensure the repair positioning effect of the splint 110 on the rail 200, and is conducive to improving the repair quality of the rail 200 weld joint repair device 100. Moreover, through the reasonable structural design of the welding rib accommodating groove 111, the utility model can keep the width of the gap G between the welding rib accommodating groove 111 and the welding rib 210 within a relatively reasonable range, avoiding the width of the gap G being too small so that the splint 110 and the welding rib 210 may come into contact, and at the same time avoiding the width of the gap G being too large so that the thickness of the splint 110 is too large, thereby reducing the material cost of the components and reducing the difficulty of maintenance.

[0075] The above describes and / or illustrates in detail an exemplary embodiment of the rail weld joint repair device proposed by the present invention. However, the embodiments of the present invention are not limited to the specific embodiments described herein. On the contrary, the components and / or steps of each embodiment can be used independently and separately from the other components and / or steps described herein. Each component and / or each step of an embodiment can also be used in combination with other components and / or steps of other embodiments. When introducing the elements / components / etc. described and / or illustrated herein, the terms "one", "an" and "above" are used to indicate the presence of one or more elements / components / etc. The terms "comprising", "including" and "having" are used to express an open-ended inclusion and mean that in addition to the listed elements / components / etc., there may be additional elements / components / etc. In addition, the terms "first" and "second" in the claims and the specification are used only as marks and are not numerical limitations on their objects.

[0076] Although the rail weld joint repair device proposed in the present invention has been described according to different specific embodiments, those skilled in the art will recognize that modifications may be made to the implementation of the present invention within the spirit and scope of the claims.

Claims

1. A rail weld joint repair device, used to be fixed to the weld joint area of the rail, characterized in that: The rail weld joint repairing device comprises: Two clamping plates, arranged in pairs on either side of the weld joint area, the inner side surfaces of the clamping plates facing the rail having an auxiliary adhesive layer capable of being glued to the side surface of the rail, and the inner side surfaces of the clamping plates being provided with weld bar accommodating grooves; the weld bar accommodating grooves being located in the middle of the length of the clamping plates and being used to accommodate the weld bars of the welded joint of the rail; wherein, when the clamping plates are glued to the side surfaces of the rail, a gap is provided between the weld bar accommodating grooves and the weld bars, and along the slotting direction of the weld bar accommodating grooves, the ratio of the width of the gap to the groove depth of the weld bar accommodating grooves is 1 / 10 to 9 / 10; and The clamp is used for pressing against the outer side surfaces of the two clamps facing away from the rails, so as to press and bond the two clamps to both sides of the rails.

2. The rail weld joint repair device according to claim 1, characterized in that: The cross-section of the rail is in the shape of an "I" character, and the inner side surface of the clamping plate matches the shape of the side surface of the rail; wherein, the extension direction of the weld bar accommodating groove matches the shape of the side surface of the rail, so that when the clamping plate is glued to the side surface of the rail, there is the gap between the groove wall and the weld bar at any position of the weld bar accommodating groove.

3. The rail weld joint repair device according to claim 2, characterized in that: A first reference plane is defined, wherein the first reference plane is perpendicular to the length direction of the rail and parallel to the height direction; wherein, on the first reference plane, the orthographic projection of the weld bar accommodating groove is in a "C" shape, and both ends of the weld bar accommodating groove in the height direction are respectively opened on the outer side of the splint facing away from the rail.

4. The rail weld joint repairing device according to claim 1, characterized in that: The auxiliary adhesive layer is made of polymer resin.

5. The rail weld joint repairing device according to claim 1, characterized in that: A second reference plane is defined, wherein the second reference plane is parallel to the length direction of the rail and perpendicular to the height direction; wherein, with the second reference plane as the cutting plane, the cross section of the weld bar accommodating groove is in the shape of an arc.

6. The rail weld joint repairing device according to claim 1, characterized in that: Along the length direction of the splint, the welding rib accommodating groove is located in the middle position of the inner side surface of the splint; and / or The clamping plate is provided with reinforcing ribs, which are arranged on the outer side of the clamping plate facing away from the rail, and the reinforcing ribs extend along the length direction.

7. The rail weld joint repairing device according to claim 1, characterized in that: The splint is provided with at least two construction holes, which penetrate the splint in the thickness direction. The construction holes are used to cooperate with construction equipment to realize the lifting, alignment and assembly of the splint; wherein, in the length direction of the splint, the construction holes are provided on both sides of the weld rib accommodating groove, and the construction holes are staggered with the weld rib accommodating groove.

8. The rail weld joint repairing device according to claim 7, characterized in that: At least two construction holes of the same number are provided on both sides of the welding bar accommodating groove in the length direction, and the construction holes on the clamping plate are evenly spaced.

9. The rail weld joint repairing device according to claim 1, characterized in that: The clamp includes a base and a pressure bolt pair, wherein the base has a base and two spaced-apart clamping arms, and the two clamping arms are respectively connected to two ends of the base; wherein: The two clamping arms are each provided with the pressure bolt pair, and when the clamping plate is glued to the side of the rail, the base is located below the rail, the two clamping arms are respectively located on the opposite outer sides of the two clamping plates, and one end of each bolt of the two pressure bolt pairs is respectively in contact with the outer side surfaces of the two clamping plates facing away from the rail, so as to achieve compression and bonding of the two clamping plates on the rail; or The pressure bolt pair is provided on one of the clamping arms, and the pressing protrusion is provided on the other clamping arm. When the splint is glued to the side of the rail, the base is located below the rail, and the two clamping arms are respectively located on the opposite outsides of the two splints, and one end of the bolt of the pressure bolt pair and one end of the pressing protrusion respectively abut against the outer side surfaces of the two splints facing away from the rail, so as to achieve compression and bonding of the two splints on the rail.

10. The rail weld joint repairing device according to claim 9, characterized in that: The base includes two assemblies, each assembly includes a clamping arm and a bottom assembly part, the clamping arm is connected to one end of the bottom assembly part, and the other end of each of the two bottom assembly parts has a splicing structure with matching shape. The two bottom assembly parts are spliced together via the splicing structure to form the base.

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