A device for simulating tensile lock welding of steel rails using a mobile flash butt welder

Abstract

This utility model relates to the field of railway engineering machinery and equipment manufacturing technology, and discloses a simulation test device for tensile locking welding of rails using a mobile flash welding machine. The simulation test device includes a test platform and two mounting seats for the stationary and moving ends of the rail, respectively, mounted on the test platform. The device also includes a stationary rail fixing simulation mechanism and a moving rail fixing simulation mechanism, both mounted on the test platform to restrict the movement of the stationary rail and the moving rail, respectively. Additionally, it includes a moving end rail tensile simulation mechanism, also mounted on the test platform, to provide the tensile stress required for the moving end rail to be stretched during the tensile locking welding process. This utility model device can be used to verify the feasibility of using a mobile flash welding machine for tensile locking welding, and can also explore the conditions and optimal process parameters required for using a mobile flash welding machine for tensile locking welding of rails.

Description

Technical Field

[0001] This utility model relates to the field of railway engineering equipment manufacturing technology, and more specifically to a simulation test device for tensile locking welding of rails using a mobile flash welding machine. Background Technology

[0002] Modern seamless rail tracks are mostly connected using flash welding. On-site operations typically employ mobile flash welding machines to weld 300m or 500m long rails. For maintenance of existing tracks, short rails are generally inserted for welding. These short rails can be used for tension locking welding or bending flash welding techniques.

[0003] Tensile locking welding refers to a construction process where, at a temperature below the design locking temperature, one end of the rail to be welded is fixed, while the other end is unsecured and can move freely within a certain range. A mobile flash welding machine is then used to clamp and tensile lock the rails at both ends. Currently, however, tensile locking welding of rails using mobile flash welding machines relies entirely on experience. Firstly, the length of the loosened fastener varies at different temperatures. Secondly, it's impossible to confirm whether the mobile flash welding machine can meet the requirements for tensile locking welding at the current temperature. This results in some welded joints of seamless track rails having poor quality, thus affecting train operation quality and safety. Summary of the Invention

[0004] To address the problems and shortcomings of the existing technology, this utility model proposes a simulation test device for tensile locking welding of rails using a mobile flash welding machine. This device can not only be used to verify the feasibility of using a mobile flash welding machine for tensile locking welding, but also to simulate and test the process parameters of rail tensile locking welding in conjunction with the mobile flash welding machine, exploring the conditions and optimal process parameters required for using a mobile flash welding machine for tensile locking welding of rails.

[0005] To achieve the aforementioned objectives of this utility model, the specific technical solution is as follows: This utility model first discloses a simulation test device for tensile locking welding of rails using a mobile flash welding machine. The test device includes a test platform, a stationary rail mounting seat on one side of the test platform for supporting the stationary rail, and a moving rail mounting seat on the test platform opposite the stationary rail mounting seat for supporting the moving rail. The test device further includes: A stationary rail fixing simulation mechanism is installed on the test platform to restrict the movement of the stationary rail during tensile locking welding. A moving-end rail fixing simulation mechanism, installed on the test platform, is used to restrict the movement of the moving-end rail during tensile locking welding; and, A moving-end rail tension simulation mechanism is set up on the test platform to provide the tensile stress required for the moving-end rail to be stretched during the tension locking welding process.

[0006] Preferably, the stationary rail fixing simulation mechanism includes a stationary rail pressure plate disposed on the stationary rail mounting base. One end of the stationary rail pressure plate is fixed to the stationary rail mounting base by screws, and the other end presses against the bottom flange of the stationary rail. Preferably, the stationary end rail fixing simulation mechanism includes a stationary end rail pressing mechanism, which includes a stationary end pressing screw fixing seat and a stationary end pressing screw. The stationary end pressing screw fixing seat is installed on the test platform. One end of the stationary end pressing screw is threadedly connected to the stationary end pressing screw fixing seat, and the other end abuts against the top surface of the stationary end rail.

[0007] Preferably, the stationary end rail fixing simulation mechanism includes a stationary end rail pressing mechanism, which includes a stationary end rail pressing cylinder mounted on the test platform, with the movable end of the stationary end rail pressing cylinder abutting against the top surface of the stationary end rail.

[0008] Preferably, the moving end rail fixing simulation mechanism includes a moving end rail pressure plate disposed on the moving end rail mounting seat. One end of the moving end rail pressure plate is fixed to the moving end rail mounting seat by screws, and the other end presses down on the rail bottom flange of the moving end rail. Preferably, the moving end rail fixing simulation mechanism includes a moving end rail pressing mechanism, which includes a moving end rail pressing cylinder mounted on the test platform, with the movable end of the moving end rail pressing cylinder abutting against the top surface of the moving end rail.

[0009] Preferably, the moving end rail fixing simulation mechanism includes a moving end rail pressing mechanism, which includes a moving end pressing screw fixing seat and a moving end pressing screw. The moving end pressing screw fixing seat is installed on the test platform. One end of the moving end pressing screw is threadedly connected to the moving end pressing screw fixing seat, and the other end abuts against the top surface of the moving end rail.

[0010] Preferably, the moving end rail tension simulation mechanism includes a moving end rail tension cylinder, which is fixed on the moving end rail mounting base, and the movable end of the cylinder is connected to the test platform; the moving end rail mounting base is slidably mounted on the test platform.

[0011] Preferably, the test apparatus further includes a rail roller support mechanism for loading and unloading rails, wherein the rail roller support mechanism is distributed along the longitudinal direction of the test platform on the side of the stationary rail mounting seat and / or the side of the moving rail mounting seat.

[0012] Preferably, the rail roller support mechanism includes a roller support fixing plate fixed on the test platform, an elastic rubber is installed on the roller support fixing plate, a roller mounting plate is supported on the elastic rubber, and a roller is installed on the roller mounting plate.

[0013] The beneficial effects of this utility model are: (1) By simulating the tensile locking state of the rail during the actual welding process, this utility model can verify the feasibility of using a mobile flash welding machine for tensile locking welding. Furthermore, by simulating and testing the process parameters of rail tensile locking welding with a mobile flash welding machine, it helps to explore the optimal process parameters to adapt to different welding conditions and requirements, and ultimately improve the reliability of the welding process and the quality of the welded joint.

[0014] (2) The test device of this utility model can perform tensile locking welding test without long rails and long loose fasteners, which simplifies the test process and reduces test cost and time.

[0015] (3) This utility model also includes a rail roller support mechanism for loading and unloading rails, which can reduce the labor intensity of operators and improve the efficiency and convenience of loading and unloading rails.

[0016] (4) By setting up a crossbeam and a crossbeam support at the moving and stationary ends, this utility model enhances the overall stability and strength of the test device, making the test process more stable and reliable. Attached Figure Description The foregoing and hereinafter detailed description of this utility model becomes clearer when read in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the overall structure of the experimental device of this utility model; Figure 2 This is a schematic diagram of the stationary end pressing mechanism of this utility model; Figure 3 This is a schematic diagram of the installation of the stationary end rail of this utility model; Figure 4 This is a schematic diagram of the installation of the moving end rail of this utility model; Figure 5 This is a schematic diagram of the rail roller support mechanism of this utility model.

[0017] In the picture: 1. Test platform; 2. Stationary rail mounting base; 3. Moving rail mounting base; 4. Stationary rail fixing simulation mechanism; 5. Moving rail fixing simulation mechanism; 6. Moving rail tensioning simulation mechanism; 7. Rail roller support mechanism; 8. Moving and stationary tie beam; 10. Stationary rail; 11. Moving rail; 41. Stationary rail pressure plate; 42. Stationary rail pressing mechanism; 51. Moving rail pressure plate; 52. Moving rail pressing mechanism; 61. Moving rail tensioning cylinder; 71. Roller support fixing plate; 72. Elastic rubber; 73. Roller mounting plate; 74. Roller; 421. Stationary pressing screw fixing base; 422. Stationary pressing screw; 521. Moving pressing screw fixing base; 522. Moving rail pressing screw; 523. Moving rail pressing cylinder. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions of this utility model, the following will further illustrate the technical solutions for achieving the purpose of this utility model through several specific embodiments. It should be noted that the technical solutions claimed by this utility model include, but are not limited to, the following embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this utility model.

[0019] Example 1 This embodiment discloses a simulation test device for tensile locking welding of steel rails using a mobile flash welding machine, as shown in the attached instruction manual. Figure 1 As shown, the simulation test apparatus includes a test platform; and, A stationary rail mounting bracket is installed on the test platform to support the stationary rail. A moving-end rail mounting bracket is installed on the test platform to support the moving-end rail. A stationary rail fixing simulation mechanism located on the test platform to limit the movement of the stationary rail during the tensile locking welding process; A moving-end rail fixing simulation mechanism located on the test platform to limit the movement of the moving-end rail during the tensile locking welding process; and, Located on the test platform, this is a moving-end rail tension simulation mechanism used to provide the tensile stress required for the moving-end rail to be stretched during the tension locking welding process.

[0020] In the embodiment described in this utility model, the stationary rail mounting base and the moving rail mounting base are located on opposite sides of the test platform, that is, the two rail mounting bases are arranged opposite each other. In this way, the stationary rail supported on the stationary rail mounting base and the moving rail supported on the moving rail mounting base can be clamped and aligned by the welding machine during the later tensile locking welding, so that welding can be carried out smoothly.

[0021] It is understood that the stationary end rail and the moving end rail of this utility model are the same type of rail. However, during the tensile locking welding test, the rail supported on the stationary end rail mounting base cannot move freely to generate displacement or be stretched. Therefore, this utility model refers to the rails located on the stationary end rail mounting base as stationary end rails. Similarly, although the rail supported on the moving end rail mounting base cannot move freely to generate displacement, it will be stretched and deformed. Therefore, this utility model refers to the rails located on the moving end rail mounting base as moving end rails.

[0022] The operation of the simulation test device is as follows: First, two rails to be stretched and welded are supported on the stationary rail mounting base and the moving rail mounting base, respectively, with a gap between the parts to be welded on the stationary and moving rails; then, the stationary rail fixing simulation mechanism and the moving rail fixing simulation mechanism fix the two rails on the mounting base to prevent displacement during the tensile locking welding process; next, the moving rail tensile simulation mechanism is activated. Since the moving rail is fixed and cannot move freely, the tension generated by the moving rail tensile simulation mechanism causes the moving rail to be stretched and deformed along its own length direction. Finally, the gap between the moving rail and the stationary rail to be welded is reduced to meet the welding requirements; finally, the mobile flash welding machine is hoisted to the test platform to weld the parts to be welded on the stationary and moving rails into one piece.

[0023] Example 2 This embodiment discloses a simulation test device for tensile locking welding of rails using a mobile flash welding machine. Based on Embodiment 1, this embodiment, as follows... Figure 2 and Figure 3 As shown, the stationary rail fixing simulation mechanism includes a stationary rail pressure plate set on the stationary rail mounting base. The stationary rail pressure plate is fixed to the stationary rail mounting base by screws. During the tensile locking welding process, the stationary rail pressure plate presses down the flange of the stationary rail bottom.

[0024] It is understandable that the stationary end rail clamp is used to simulate the rail fasteners on a real track. Its function and purpose are basically the same as those of the rail fasteners, which are used to fix the rail and prevent the rail from moving longitudinally or laterally.

[0025] In the embodiments described in this utility model, the stationary end rail pressure plate can be symmetrically arranged on both sides of the stationary end rail to press down the two side flanges of the stationary end rail bottom.

[0026] Furthermore, to enhance the fixing effect on the stationary rail, the stationary rail fixing simulation mechanism also includes a stationary rail pressing mechanism. This mechanism is located above the stationary rail mounting base and includes a stationary pressing screw fixing seat and a stationary pressing screw. The stationary pressing screw fixing seat is fixedly mounted on the test platform with screws, and a nut is embedded inside the stationary pressing screw fixing seat. The stationary pressing screw passes through the stationary pressing screw fixing seat and is threadedly connected to the internal nut. One end of the stationary pressing screw is keyed to a stationary handwheel, and the other end abuts against the top surface of the stationary rail during the tension locking welding process.

[0027] For ease of operation, the stationary end handwheel connected to the key at the end of the stationary end pressing screw can be replaced with a drive combination of a servo motor and a reducer.

[0028] It is worth mentioning that, in some embodiments, the stationary end rail pressing mechanism can also be a stationary end rail pressing cylinder set on the test platform, and the movable end of the stationary end rail pressing cylinder abuts against the top surface of the stationary end rail during the tensile locking welding process.

[0029] Understandably, both the stationary rail pressing mechanism and the stationary rail pressure plate serve to fix the rail in place, preventing it from moving freely. Both work by applying a downward force to the rail, increasing the friction between the stationary rail and its mounting base, thus preventing movement. Furthermore, the stationary rail mounting base is fixed to the test platform with screws and cannot move freely. Therefore, once the stationary rail is pressed down by the stationary rail fixing simulation mechanism, it cannot move freely relative to either the mounting base or the test platform.

[0030] In the embodiments described in this utility model, since there is no large tensile stress acting on the rail during the tensile locking welding process, causing it to stretch and deform, the stationary end rail pressing mechanism can generally be a stationary end pressing screw.

[0031] In the embodiments described in this utility model, multiple stationary end rail pressing mechanisms can be arranged along the longitudinal direction of the stationary end rail. For example, Figure 1 As shown, one is installed at one end of the test platform, and then one or two are installed on the stationary rail mounting base. Furthermore, the stationary rail pressing mechanism located at one end of the test platform can be directly fixed to the two stationary mounting brackets of the test platform.

[0032] Example 3 This embodiment discloses a simulation test device for tensile locking welding of rails using a mobile flash welding machine. Based on Embodiment 1, this embodiment, as follows... Figure 1 and Figure 4As shown, the moving-end rail fixing simulation mechanism includes a moving-end rail pressure plate disposed on the moving-end rail mounting base. The moving-end rail pressure plate is fixed to the moving-end rail mounting base by screws. During the tensile locking welding process, the moving-end rail pressure plate presses down the flange of the moving-end rail bottom.

[0033] It is understandable that the moving end rail pressure plate is also used to simulate the rail fasteners on a real track. Its function and purpose are basically the same as those of the rail fasteners, which are used to fix the rail and prevent the rail from moving longitudinally or laterally.

[0034] In the embodiments described in this utility model, the moving end rail pressure plate can be symmetrically arranged on both sides of the moving end rail to press down the two side flanges of the bottom of the moving end rail.

[0035] Furthermore, to enhance the fixing effect on the moving end rail, the moving end rail fixing simulation mechanism also includes a moving end rail pressing mechanism. The moving end rail pressing mechanism is located above the moving end rail mounting base and includes a moving end pressing screw fixing seat and a moving end pressing screw. The moving end pressing screw fixing seat is fixedly installed on the test platform by screws, and a nut is embedded inside the moving end pressing screw fixing seat. The moving end pressing screw is threaded through the moving end pressing screw fixing seat and is threadedly connected to the nut inside. One end of the moving end pressing screw is keyed to a moving end handwheel, and the other end abuts against the top surface of the moving end rail during the tension locking welding process.

[0036] For ease of operation, the handwheel connected to the key at the end of the moving end pressing screw can be replaced with a drive combination of a servo motor and a reducer.

[0037] It is worth mentioning that, in some embodiments, the moving end rail pressing mechanism can also be a moving end rail pressing cylinder set on the test platform, and the moving end of the moving end rail pressing cylinder abuts against the top surface of the moving end rail during the tensile locking welding process.

[0038] Understandably, both the moving-end rail pressing mechanism and the moving-end rail pressure plate serve to fix the moving-end rail in place, preventing it from moving freely. Furthermore, both increase the friction between the moving-end rail and its mounting base by applying a downward force to the moving-end rail, thus preventing the rail from moving relative to the mounting base.

[0039] However, during the tensile locking welding process, the moving end rail is stretched and deformed, and the tensile force generated by this deformation is relatively large, which can easily cause the moving end rail to slip. Therefore, in this invention, the moving end rail pressing mechanism needs to include at least one moving end rail pressing cylinder. The cylinder generates a large pressure to increase the friction of the moving end rail, firmly locking the moving end rail and preventing it from moving freely.

[0040] Example 4 This embodiment discloses a simulation test device for tensile locking welding of rails using a mobile flash welding machine. Based on any of the above embodiments, the moving end rail tensile simulation mechanism includes a moving end rail tensile cylinder, which is fixed on the moving end rail mounting base. The movable end of the cylinder is connected to the moving end mounting frame on the same side of the test platform through a pin. The moving end rail mounting base is slidably installed on the test platform and can move on the test platform.

[0041] Understandably, in order to balance the force on the rail, the moving end rail tensioning cylinders are symmetrically distributed on both sides of the moving end rail.

[0042] Based on the above structure, in this embodiment, one end of the moving end rail is supported on the moving end rail mounting base, and the other end is supported on the moving end rail fixed support base on the test platform. The moving end rail support base is fixedly connected to the test platform and cannot move freely. Therefore, to prevent the moving end rail from slipping during the stretching process, the moving end rail fixing simulation mechanism consists of a moving end rail pressure plate mounted on the moving end rail mounting base and at least one moving end rail pressing mechanism mounted above the moving end rail fixed support base. This pressing mechanism acts on the portion of the moving end rail supported on the moving end rail fixed support base to increase the friction between the moving end rail and the moving end rail fixed support base, thereby preventing the moving end rail from moving freely relative to the moving end rail support base. In other words, the combined structure of the moving end rail fixed support base and the moving end rail pressing mechanism is equivalent to a fixed support for the moving end rail.

[0043] Furthermore, in order to improve the fixing effect of the moving end rail on the moving end rail mounting seat and prevent it from slipping relative to the moving end rail mounting seat, so that the movement of the moving end rail mounting seat can smoothly drive the moving end rail to tensile deformation. The moving end rail mounting base is also equipped with a moving end rail pressing mechanism. The moving end rail pressing mechanism located on the moving end rail mounting base acts on the part of the moving end rail supported on the moving end rail mounting base, and is used to increase the friction between the moving end rail and the moving end rail mounting base, thereby preventing the moving end rail from moving freely relative to the moving end rail mounting base.

[0044] Furthermore, such as Figure 1As shown, the moving-end rail pressing mechanism located above the moving-end rail fixed support should be a moving-end rail pressing cylinder. The cylinder generates significant pressure to increase the friction of the moving-end rail, firmly locking it in place and preventing free movement. The moving-end rail pressing mechanism located on the moving-end rail mounting base can be a moving-end pressing screw, which cooperates with the moving-end rail pressure plate to fix the moving-end rail on the mounting base. Furthermore, the moving-end rail pressing cylinder located above the moving-end rail fixed support can be directly fixed to two moving-end mounting frames on the same side of the test platform.

[0045] In the embodiment described in this utility model, after the moving end rail tensioning cylinder is activated, the tensile stress of the cylinder acts directly on the moving end mounting bracket, and then the transmitted reaction force pulls the moving end rail mounting seat to move longitudinally on the test platform. Since the moving end rail is pressed down by the moving end rail pressing cylinders at both ends and the moving end rail pressing screw, it cannot move arbitrarily. Therefore, the movement of the test platform will cause the moving end rail to undergo tensile deformation in the longitudinal direction. This tensile deformation is exactly the deformation required for rail tension locking welding.

[0046] like Figure 1 As shown, four mounting brackets (two stationary mounting brackets and two moving mounting brackets) are set at the four corners on both sides of the test platform. Since the tensile force of the moving end rail tensioning cylinder directly acts on two of the moving end mounting brackets, in order to enhance the stability and strength of the overall test device, a moving-stationary end tie beam is set between the two mounting brackets located on the same side along the length of the test platform (i.e., a moving-stationary end tie beam is set between the stationary end mounting bracket and the moving end mounting bracket located on the same side). The tie beam connects the four mounting brackets on the test platform to form a whole, and a beam support seat is also set below the moving-stationary end tie beam. The beam support seat is fixed to the test platform with screws to support the moving-stationary end tie beam above, thereby improving the strength and rigidity of the beam.

[0047] Example 5 This embodiment discloses a simulation test device for tensile locking welding of rails using a mobile flash welding machine. Based on embodiments 1-4, the simulation test device further includes a rail roller support mechanism for loading and unloading rails, such as... Figure 1 As shown, the rail roller support mechanism is distributed along the longitudinal direction of the test platform and installed on one side or opposite sides of the stationary rail mounting seat, and distributed on one side or opposite sides of the moving rail mounting seat.

[0048] Specifically, such as Figure 5As shown, the rail roller support mechanism includes a roller support fixing plate fixed to the test platform by screws, an elastic rubber is supported on the roller support fixing plate, a roller mounting plate is supported on the elastic rubber, and the roller mounting plate is connected to the roller support fixing plate by screws passing through the elastic rubber; a roller is mounted on the roller mounting plate.

[0049] The rail roller support mechanism located next to the stationary rail mounting seat and the rail roller support mechanism located next to the moving rail mounting seat have the same function. For example, when installing the rail to be welded, the worker places the rail on the roller support mechanism and then pushes the rail forward. Under the action of the roller, the rail to be welded can be pushed to the corresponding rail mounting seat in a convenient and quick manner. The whole operation process has low labor intensity and is easy to operate.

[0050] Understandably, since welding rails requires strict control of insulation between the moving and stationary ends, and the rail roller support mechanism is fixed on a tensile locking welding test platform, insulation is also required. Therefore, the elastic element between the roller support fixing plate and the roller mounting plate needs to be made of insulated elastic rubber, rather than a spring.

[0051] In the embodiments described in this utility model, the longitudinal direction is the length direction of the test platform, which is also the length direction of the rail.

[0052] Example 6 This embodiment discloses a simulation test device for tensile locking welding of steel rails using a mobile flash welding machine. The working process of the simulation test device is as follows: Step S1: Push the rail to be welded into the simulation test device along the rail roller support mechanism at the stationary end. The rail is supported on the stationary end rail mounting seat, and the end face to be welded passes over the rail roller support mechanism in front of the stationary end rail mounting seat.

[0053] Step S2: Push the other rail to be welded into the simulation test device along the moving end rail roller support mechanism on the opposite side. The rail is supported on the moving end rail mounting seat and the moving end rail fixed support seat respectively, and the end face to be welded passes over the rail roller support mechanism in front of the moving end rail mounting seat.

[0054] Step S3: Lift the mobile flash welding machine between the stationary end rail mounting base and the moving end rail mounting base, adjust the rails at both ends so that the end faces to be welded on the stationary end rail and the moving end rail are moved to the appropriate position, and use the mobile flash welding machine to clamp and center the stationary end rail and the moving end rail.

[0055] Step S4: The operator uses a tool to extend the stationary end pressing screw of the stationary end pressing mechanism to press the stationary end rail tightly, and then rotates the nut of the stationary end rail pressure plate with the rated torque to press the stationary end rail onto the stationary end rail mounting base.

[0056] Step S5: The operator controls the moving end pressing cylinder to press the moving end rail through the system control, then uses a tool to extend the moving end pressing screw to press the moving end rail, and finally uses the rated torque to rotate the nut of the moving end rail plate to press the moving end rail onto the moving end rail mounting base.

[0057] Step S6: According to the relevant test requirements, the rail is welded by setting the electrical program and using a mobile flash welding machine to simulate the tensile locking weld of the rail on site.

[0058] The specific tensile locking welding process needs to be determined based on the locking temperature difference. When the locking temperature difference in the simulation test is small, the required tensile amount of the rail is small, so the moving flash welding machine works first. When tensile welding is required halfway through, the moving end rail tensioning cylinder works. If the locking temperature difference in the simulation test is large, the required tensile amount of the moving end rail is correspondingly larger. In this case, the moving end rail tensioning cylinder needs to work first. When the moving end rail is stretched and deformed to contact the welding end face of the stationary end rail, the moving flash welding machine begins the welding operation.

[0059] After the final welding was completed, the strain of the moving end rail was collected by the strain gauges attached to the surface of the moving end rail during the entire tensile locking welding test. This proved that the moving end rail did indeed generate the corresponding tensile stress, and that it is feasible to use a mobile flash welding machine for tensile locking welding.

[0060] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0061] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0062] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A simulation test device for tensile locking welding of rails using a mobile flash welding machine, characterized in that, The test apparatus includes a test platform (1), a stationary rail mounting base (2) mounted on the test platform (1) for supporting the stationary rail (10), and a moving rail mounting base (3) mounted on the test platform (1) for supporting the moving rail (11); the test apparatus further includes: A stationary end rail fixing simulation mechanism (4) is set on the test platform (1) to limit the movement of the stationary end rail (10). A moving-end rail fixing simulation mechanism (5) is installed on the test platform (1) to restrict the movement of the moving-end rail (11); and, A moving end rail tension simulation mechanism (6) is set on the test platform (1) to provide the tensile stress required for the moving end rail (11) to be stretched during the tensile locking welding process.

2. The simulation test device for tensile locking welding of rails using a mobile flash welding machine according to claim 1, characterized in that, The stationary end rail fixing simulation mechanism (4) includes a stationary end rail pressure plate (41) set on the stationary end rail mounting base (2).

3. The device for simulating the stretch locking welding of a rail using a mobile flash butt welding machine according to claim 1, characterized in that, The stationary end rail fixing simulation mechanism (4) includes a stationary end rail pressing mechanism (42). The stationary end rail pressing mechanism (42) includes a stationary end pressing screw fixing seat (421) and a stationary end pressing screw (422). The stationary end pressing screw fixing seat (421) is installed on the test platform (1). One end of the stationary end pressing screw (422) is threadedly connected to the stationary end pressing screw fixing seat (421), and the other end abuts against the stationary end rail (10).

4. The simulation test device for tensile locking welding of rails using a mobile flash welding machine according to claim 1, characterized in that, The stationary end rail fixing simulation mechanism (4) includes a stationary end rail pressing mechanism (42), which includes a stationary end rail (10) pressing cylinder set on the test platform (1). The movable end of the stationary end rail (10) pressing cylinder abuts against the stationary end rail (10).

5. The simulation test device for tensile locking welding of rails using a mobile flash welding machine according to claim 1, characterized in that, The moving end rail tension simulation mechanism (6) includes a moving end rail tension cylinder (61), which is fixed on the moving end rail mounting base (3). The moving end of the cylinder is connected to the test platform (1). The moving end rail mounting base (3) is slidably set on the test platform (1).

6. The simulation test device for tensile locking welding of rails using a mobile flash welding machine according to claim 1, characterized in that, The moving end rail fixing simulation mechanism (5) includes a moving end rail pressure plate (51) set on the moving end rail mounting seat (3).

7. The simulation test device for tensile locking welding of rails using a mobile flash welding machine according to claim 1, characterized in that, The moving end rail fixing simulation mechanism (5) includes a moving end rail pressing mechanism (52), which includes a moving end rail pressing cylinder (523) set on the test platform (1). The movable end of the moving end rail pressing cylinder (523) abuts against the moving end rail (11).

8. The simulation test device for tensile locking welding of rails using a mobile flash welding machine according to claim 1, characterized in that, The moving end rail fixing simulation mechanism (5) includes a moving end rail pressing mechanism (52). The moving end rail pressing mechanism (52) includes a moving end pressing screw fixing seat (521) and a moving end pressing screw. The moving end pressing screw fixing seat (521) is installed on the test platform (1). One end of the moving end pressing screw is threadedly connected to the moving end pressing screw fixing seat (521), and the other end abuts against the moving end rail (11).

9. The simulation test device for tensile locking welding of rails using a mobile flash welding machine according to claim 1, characterized in that, The test apparatus also includes a rail roller support mechanism (7) for loading and unloading rails, which is distributed along the longitudinal direction of the test platform (1) on the side of the stationary rail mounting seat (2) and / or the side of the moving rail mounting seat (3).

10. A simulation test device for tensile locking welding of rails using a mobile flash welding machine according to claim 9, characterized in that, The rail roller support mechanism (7) includes a roller support fixing plate (71) fixed on the test platform (1), an elastic rubber (72) is installed on the roller support fixing plate (71), a roller mounting plate (73) is supported on the elastic rubber (72), and a roller (74) is installed on the roller mounting plate (73).

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