Positioning tool for welding of railway wagon

Abstract

The utility model discloses a positioning tool for welding a railway wagon, and relates to the technical field of railway vehicle production equipment. The positioning tool for railway wagon welding comprises a rectangular frame, a back plate is arranged at one end of the rectangular frame, and the size of the rectangular frame is matched with that of a compartment bottom plate so that the compartment bottom plate can penetrate through the rectangular frame; the supporting piece is fixedly connected to the lower end of the rectangular frame, and the supporting piece is used for placing a compartment bottom plate; the walking mechanism moves back and forth between a first position and a second position, and the walking mechanism walks back and forth in the direction of the back plate; when the walking mechanism is located at the first position, the walking mechanism abuts against the back plate. When the walking mechanism is located at the second position, the walking mechanism abuts against the end deviating from the back plate. And the positioning mechanism is used for fixing the position of the walking mechanism on the rectangular frame.

Description

Technical Field

[0001] The utility model relates to the technical field of rail vehicle production equipment, in particular to a positioning tool for welding railway freight cars. Background Art

[0002] The positioning tool for railway freight car welding is a tool used to fix and position the steel components of the railway freight car during welding. Usually, the side panels and bottom panels of the car to be welded are fixed with fastening bolts, and welding is performed after the fixing is completed.

[0003] For the positioning tool for welding railway freight cars, it is an auxiliary device that fixes each component in the appropriate position when assembling and welding the body parts of the railway freight car to ensure that the welded components can accurately match and maintain the required shape and structural integrity. However, in actual operation, this type of tooling often has some problems. For example, during the welding process, the position of the car body slips due to high temperature or insufficient fixing force. This will cause the position of the weld to deviate from the predetermined track, thereby affecting the subsequent overall welding accuracy and strength, and then causing the quality of the final product to decline, and may have an adverse effect on the safe operation of the railway freight car. Therefore, the railway freight car welding positioning tooling in the prior art has a technical problem that inaccurate positioning causes the position of the car body to slip, thereby affecting the quality of the car body. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a positioning tool for railway train welding, comprising:

[0005] A rectangular frame, one end of which is provided with a back plate, the size of the rectangular frame being adapted to the size of the carriage floor so that the carriage floor can pass through the rectangular frame;

[0006] A support member, the support member is fixedly connected to the lower end of the rectangular frame, and the support member is used to place the carriage bottom plate;

[0007] A walking mechanism, the walking mechanism moves back and forth between a first position and a second position, and the walking mechanism moves back and forth along the backboard direction;

[0008] Wherein, when the walking mechanism is in the first position, the walking mechanism abuts against the back plate; when the walking mechanism is in the second position, the walking mechanism abuts against an end away from the back plate;

[0009] A positioning mechanism is used to fix the position of the walking mechanism on the rectangular frame.

[0010] In some examples of the present utility model, two guide rail grooves are provided at the top of the rectangular frame, and the guide rail grooves extend in the horizontal direction.

[0011] In some examples of the present utility model, the backboard is a structural member made of a high-strength material. The backboard is provided with a hollow layer, and flange structures are provided on both sides of the backboard and are equipped with quick snap fasteners.

[0012] In some examples of the present utility model, the support member includes:

[0013] A plurality of adjustable feet, one end of the adjustable feet is connected to the rectangular frame, and the adjustable feet are adapted to adjust the height of the adjustable feet;

[0014] Elastic support blocks, which are arranged between the adjustable feet and the rectangular frame.

[0015] In some examples of the present utility model, the support member further includes a longitudinal rod, which is fixedly installed in the middle of the adjustable feet. The longitudinal rod is used for placing the carriage bottom plate and at the same time provides a working space for welding the longitudinal rod.

[0016] In some examples of the present utility model, the traveling mechanism includes:

[0017] A double-axis guide wheel set, which is movably arranged on the guide rail grooves;

[0018] A hydraulic drive cylinder, which drives the double-axis guide wheel to move linearly along the guide rail grooves.

[0019] In some examples of the present utility model, the traveling mechanism further includes a friction wheel set, which abuts against the guide rail grooves.

[0020] In some examples of the present utility model, the traveling mechanism further includes a fixing device. One end of the fixing device is fixedly connected to the traveling mechanism, and the other end of the fixing device is provided with a friction panel, and the friction panel abuts against the backboard in the first position.

[0021] In some examples of the present utility model, the fixing device is a hydraulic drive device. The fixed end of the hydraulic drive is fixedly connected to the traveling device, and the driving end of the hydraulic drive device is fixedly connected to the friction panel.

[0022] In some examples of the present utility model, the positioning mechanism includes:

[0023] A telescopic device, which is fixedly connected to the traveling mechanism. In the extended state, the telescopic device abuts against the inner edge of the rectangular frame, and the telescopic direction of the telescopic device is the longitudinal direction;

[0024] A positioning pressing plate, which is installed on the telescopic end of the telescopic device, and a friction layer is provided on the positioning pressing plate.

[0025] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. The positioning tooling for railway train welding can accurately place the carriage floor through the cooperation of the rectangular frame and the support member, and use the transverse direction of the rectangular frame as the track of the traveling mechanism at the same time, so as to accurately position the carriage to be welded. When welding treatment is required for a railway freight car carriage, first place the carriage floor on the support member, and the support member is designed to stably carry the carriage floor and keep it at an appropriate height for subsequent operations. At this time, the rectangular frame is adapted to the size of the carriage floor, and through such an adaptation design, it is ensured that the carriage floor can be exactly placed at the predetermined position and smoothly pass through the rectangular frame. Next, assist the welding process by adjusting the working state of the traveling mechanism; specifically, move it from one extreme position of the rectangular frame to another extreme position according to the working steps: the first position abuts against the back plate, which is the initial position or the preparation position; when it is moved to the second position, contact is formed at the end opposite to the back plate, which is convenient for workers or automated equipment to operate on the bottom of the vehicle from another direction. Such reciprocating motion can assist the operator or the automated welding system to accurately position and weld the entire carriage floor section by section, improving the overall welding quality and production efficiency. In addition, the positioning mechanism ensures that during the whole process, the traveling mechanism can be firmly locked at the designated position, further increasing the safety and accuracy during welding, reducing the risk of misalignment that may occur, and making the whole welding process smoother. This tooling achieves an efficient and reliable operation effect through a simple and practical design. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic structural diagram of a positioning tooling for railway freight car welding provided by the present utility model;

[0028] Figure 2 is Figure 1 an enlarged view of area A in

[0029] Figure 3It is a schematic cross-sectional structure diagram in the present utility model;

[0030] Figure 4 It is Figure 3 an enlarged view of area B in

[0031] Explanation of reference numerals:

[0032] 100 - rectangular frame; 110 - guide rail groove; 120 - back panel;

[0033] 200 - support member; 210 - adjustable support feet; 220 - elastic support block; 230 - longitudinal rod;

[0034] 300 - traveling mechanism; 310 - double - axis guide wheel set; 320 - hydraulic drive cylinder; 330 - friction wheel set; 340 - fixing device; 350 - friction panel;

[0035] 400 - positioning mechanism; 410 - telescopic device; 420 - positioning pressure plate. Detailed implementation manners

[0036] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0037] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, features defined as "first", "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0038] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0040] Next, refer to Figures 1-3 A positioning tooling for railway freight car welding provided according to an embodiment of the present utility model includes:

[0041] A rectangular frame 100, with a back plate 120 provided at one end of the rectangular frame 100. The size of the rectangular frame 100 is adapted to the size of the carriage bottom plate so that the carriage bottom plate can pass through the rectangular frame 100. Among them, the rectangular frame 100 is usually made of steel or other high-strength materials and has sufficient dimensions to ensure that the vehicle body bottom plate to be installed can pass through the entire frame smoothly. The rectangular frame 100 is provided with a back plate 120 at one end, and the back plate 120 can play an important supporting and positioning role in the assembly and welding process. The back plate 120 is preferably fixed to one end of the frame, and the size specifications are adjusted according to the actual length and width of the vehicle body bottom plate;

[0042] A support member 200, fixedly connected to the lower end of the rectangular frame 100. The support member 200 is used to place the carriage bottom plate, and the support member 200 is used to support the carriage bottom plate in the processing state and provides a stable and reliable bearing surface by being fixed at the bottom of the rectangular frame 100.

[0043] A traveling mechanism 300, moving back and forth between a first position and a second position, and the traveling mechanism 300 travels back and forth along the direction of the back plate 120;

[0044] Among them, when the traveling mechanism 300 is located at the first position, the traveling mechanism 300 abuts against the back plate 120; when the traveling mechanism 300 is located at the second position, the traveling mechanism 300 abuts against the end away from the back plate 120;

[0045] The positioning mechanism 400 fixes the traveling mechanism 300 in the position of the rectangular frame 100. The positioning mechanism 400 can adopt a manual adjustment mechanism with screws or locking rods and fasten it at a specific position, so that the positioning mechanism 400 slides to the correct position on the traveling mechanism 300 and then is firmly locked. This method can not only ensure accurate positioning but also meet the welding requirements of different vehicle models. Through the above structure, the positioning function can be realized at different positions to meet the function of fixing the traveling mechanism 300. At the same time, the positioning mechanism 400 can also adopt an electric drive form, and the positioning function is realized by providing a positive pressure through the telescopic device 410.

[0046] Please continue to refer to Figure 1 As shown, according to an embodiment of the present invention, two guide rail grooves 110 are provided on the top of the rectangular frame 100. The guide rail grooves 110 extend in the transverse direction. The two guide rail grooves 110 extend along the transverse direction. The guide rail grooves 110 are used to support and guide the carriage underframe or other structural components to be welded, so that the above components can be accurately aligned along the guide rails. Such a design can effectively reduce the errors caused by manual placement, improve the accuracy and stability of the entire assembly and welding process, and meet the requirements for rapid adjustment and accurate positioning in the mass production process.

[0047] Specifically, the two guide rail grooves 110 can be processed on the top surface of the prefabricated rectangular frame 100 by machining methods such as CNC milling machines or wire cutting technologies. During production, it is necessary to ensure that the two transverse guide rails are parallel and in the same horizontal plane to avoid the situation of skew or interference of the components to be welded installed on them during the adjustment of the position, so as to ensure the consistency and repeatability of subsequent operations.

[0048] Please continue to refer to Figure 1 As shown, according to another embodiment of the present invention, the back plate 120 is a structural member made of high-strength material to ensure that the overall device has sufficient rigidity and durability to meet the requirements of the tooling working in harsh environments. The back plate 120 is provided with a hollow layer. This hollow structure not only effectively reduces the self-weight of the device but also optimizes the heat dissipation. In order to increase the strength of the connection part and facilitate operation, flange structures are provided on both sides of the back plate 120 and are equipped with quick snap fasteners. Flange structures with strengthening functions and facilitating alignment and installation are added to the two wings of the back plate 120, and quick snap fasteners are respectively configured at both ends thereof. Such a design makes the entire positioning tooling easier to use, easier to assemble and adjust, and greatly improves the assembly efficiency.

[0049] Specifically, in terms of material selection, considering the lightweight and high-strength and toughness characteristics, the backboard 120 can be made of stainless steel or high-strength aluminum alloy. In terms of the specific structure, when manufacturing the backboard 120, a die-casting forming technique is adopted to create a hollow layer structure in the middle of the backboard 120, which can not only maintain sufficient mechanical stability but also reduce the overall weight. To facilitate the precise assembly with other parts, the connection hole positions of the quick snap fasteners can be accurately machined in advance; only simple docking operations are required during the assembly stage to achieve the quick locking function, thus greatly improving the assembly efficiency and accuracy and ensuring the welding quality.

[0050] Please continue to refer to Figure 1 and Figure 2 As shown, according to another embodiment of the present invention, the support member 200 includes:

[0051] A plurality of adjustable feet 210, one end of the adjustable feet 210 is connected to the rectangular frame 100, and the adjustable feet 210 are adapted to adjust the height of the adjustable feet 210, so as to be able to reserve a working space for the staff according to the actual situation;

[0052] Elastic support blocks 220 are arranged between the adjustable feet 210 and the rectangular frame 100. Special-designed elastic support blocks 220 are configured between the rectangular frame 100 and the adjustable feet 210. The elastic support blocks 220 can adjust their elasticity and displacement according to the actual size and morphological changes of the parts to be processed, absorb the impact effect caused by additional loads while providing the necessary support rigidity, and effectively prevent deformation.

[0053] Specifically, the elastic support blocks 220 can be made of materials such as springs or rubbers to ensure automatic adjustment when the external pressure changes and the support strength changes, achieving the best use effect, significantly improving the assembly accuracy of railway freight cars and reducing the possibility of subsequent rework. On this basis, a precision screw mechanism is further combined to adjust the lifting height of each adjustable foot 210, facilitating adaptation to various different working platforms and the requirements of the bottom structure of freight cars, thus greatly expanding the application range of the tooling and enhancing its functionality and flexibility.

[0054] Please continue to refer to Figure 1 、 Figure 2As shown, according to an optional embodiment of the present utility model, the support member 200 further includes a longitudinal rod 230. The longitudinal rod 230 is fixedly installed in the middle of the adjustable support feet 210. The longitudinal rod 230 is used to place the carriage bottom plate and at the same time provide a working space for welding the longitudinal rod 230. The number of support members 200 is set to be multiple. Usually, the number of support members 200 is four, six or eight, which is determined according to the size of the carriage bottom plate. The larger the size of the carriage bottom plate, the more the number of support members 200. The longitudinal rod 230 is of an appropriate length to be able to support the carriage bottom plate, which not only provides a stable working platform for welding but also ensures the convenience and safety of the operator during welding. In this way, it can effectively prevent cracks or other defects from occurring in the weld.

[0055] In terms of specific technical implementation solutions, the longitudinal rod 230 can be firmly fixed in the middle of the adjustable support feet 210 by welding or using fasteners such as bolts and nuts. On this basis, anti-slip grooves or concave-convex structures can also be provided on the longitudinal rod 230 to increase the stability when the bottom plate is placed; at the same time, considering the convenience of adjusting the overall height to adapt to different models of carriages, a detachable cross-beam structure is adopted to further strengthen the positioning effect. Such a design solution ensures the welding quality and simplifies the assembly operation in the production process.

[0056] Please continue to refer to Figure 3 As shown, according to a further embodiment of the present utility model, the traveling mechanism 300 includes:

[0057] A double-axis guide wheel set 310. The double-axis guide wheel set 310 is movably arranged on the guide rail groove 110. In order to ensure that the double-axis guide wheel can operate stably under different environmental conditions and operating intensities, the double-axis guide wheel preferably has a large friction coefficient and high wear resistance; in addition, when designing the structure, the contact area between the wheel and the guide rail needs to be taken into account to reduce the resistance during movement and reduce wear;

[0058] A hydraulic drive cylinder 320. The hydraulic drive cylinder 320 drives the double-axis guide wheel to move linearly along the guide rail groove 110. The hydraulic drive cylinder 320 drives the wheel pair to move along the preset guide rail line. The working state of the hydraulic cylinder can be adjusted by the operator through a remote control system according to actual processing needs, such as output force or stroke range and other parameters, to realize the flexible and fast forward and backward movement of the positioning tooling; in addition, appropriate specifications can also be selected according to changes in load and usage frequency to meet the intensity and safety requirements of long-term continuous operation, and improve the operation efficiency and accuracy of the entire assembly system. This method effectively improves the compatibility of the traveling mechanism 300 with various specifications of vehicle models and complex environments.

[0059] Specifically, to achieve the above walking function, a pair of biaxial rolling wheels with special rubber linings can be used to increase the friction with the track; and the speed difference of individual parts can be adjusted in a timely manner by combining the sensor feedback information in the hydraulic system to avoid potential safety hazards caused by slipping or out-of-control situations. In this way, it is possible to ensure that the positioning task can be completed with high efficiency and reliability in any complex working conditions.

[0060] Please continue to refer to Figure 3 and Figure 4 As shown, in an alternative embodiment of the present invention, the walking mechanism 300 further includes a friction wheel set 330. The friction wheel set 330 abuts against the guide rail groove 110 and rotates freely. During actual operation, the action of the hydraulic drive cylinder 320 can make the entire mechanism move smoothly on the track, and at the same time, the friction wheel set 330 can better abut against the guide rail groove 110 to provide sufficient friction, avoiding the technical problem of inaccurate positioning caused by the inertia of the walking mechanism 300.

[0061] Specifically, the position of the friction wheel set 330 can be adjusted so that they can properly adhere to the inside of the special guide rail installed on the railway freight car skeleton. This can not only reduce the traveling resistance, but also effectively improve the walking stability of the tooling by increasing the friction coefficient. Such a design ensures high positioning accuracy in the welding process and can greatly reduce the welding errors caused by unstable walking.

[0062] Please continue to refer to Figure 1 、 Figure 3 and Figure 4 As shown, in some examples of the present invention, the walking mechanism 300 further includes a fixing device 340. One end of the fixing device 340 is fixedly connected to the walking mechanism 300, and the other end of the fixing device 340 is provided with a friction panel 350. The friction panel 350 abuts against the back plate 120 in the first position. The friction panel 350 can be made of a rubber material with a certain elasticity and can be replaced with different materials according to needs to meet the use in different environments. In addition, when the positioning tooling is working, the friction panel 350 is in close contact with the back plate 120, and sufficient static friction is generated under the action of the back plate 120 to prevent the object to be welded from undergoing irregular displacement or deflection due to external forces. Such a design is beneficial to ensuring the welding quality and reducing the deformation problem during the welding process.

[0063] Specifically, an adjustment mechanism can be arranged between the friction panel 350 and the fixing device 340 to achieve the movement of the panel and adjustable pressure at the first position. For example, a spring and a threaded member can be used to precisely control the pre-pressure applied by the panel to the back plate 120. This method not only ensures that the friction panel 350 can tightly abut against the object to be welded, but also effectively avoids the extrusion deformation of the object due to excessive pressure. This structure is simple and practical, easy to operate and maintain, and is suitable for popularization and application in various truck welding production lines.

[0064] Please continue to refer to Figure 1 As shown, in some examples of the present invention, the fixing device 340 is a hydraulic driving device. The fixed end of the hydraulic drive is fixedly connected to the traveling device, and the driving end of the hydraulic drive device is fixedly connected to the friction panel 350. Through this linkage method, the precise positioning function of the truck components in multiple axial directions is achieved, effectively reducing the frequency of manual adjustment requirements and greatly improving the welding efficiency and accuracy.

[0065] Specifically, at the initial stage of design, a suitable servo motor is selected as the driving source and an oil pressure system within the parameter range suitable for the working requirements is selected according to the required maximum output force; for the part directly connected to the friction panel 350, it is recommended to use wear-resistant materials such as high-strength steel plates or alloy forgings, which not only ensures the structural strength of the entire tooling, but also facilitates long-term use without adverse consequences such as deformation. After the entire assembly is completed, the oil circuit pressure can be adjusted through an external control system to control the moving speed to achieve the final expected goal.

[0066] Please continue to refer to Figure 3 and Figure 4 As shown, in some examples of the present invention, the positioning mechanism 400 includes:

[0067] A telescopic device 410, the telescopic device 410 is fixedly connected to the traveling mechanism 300. When the telescopic device 410 is in the extended state, it abuts against the inner edge of the rectangular frame 100, and the telescopic direction of the telescopic device 410 is the longitudinal direction;

[0068] A positioning pressure plate 420, the positioning pressure plate 420 is installed on the telescopic end of the telescopic device 410, and a friction layer is provided on the positioning pressure plate 420.

[0069] Among them, the telescopic device 410 has the ability of variable stroke, and one end of it is fixedly connected to the traveling mechanism 300. When in the working state, the telescopic device 410 can extend longitudinally and be connected to both sides of the railway freight car or the vehicle body structure such as the rectangular frame 100 to form a support and apply necessary force longitudinally. This method can make the whole positioning device stable and firm. In addition, a positioning pressure plate 420 is installed on the side of the telescopic device 410 away from the traveling mechanism 300. The positioning pressure plate 420 can not only be adjusted by the telescopic device 410 to be close to the workpiece and play a role in limiting and fixing it, but also a friction layer made of a specific material is specially set on its contact surface to increase the friction between the contact interfaces, further ensuring that the positioning is stable, reliable and does not shift, and thus ensuring the welding quality and welding efficiency.

[0070] In the specific technical implementation process, in order to achieve the above goals, a hydraulic cylinder can be used as a way to implement the telescopic device 410. In this way, the overall movement operation can be completed by using the traveling mechanism 300, and it can also be conveniently adjusted to different widths or heights to adapt to various freight car models and ensure the welding quality. At the same time, for the selection of the friction layer material, products with better wear resistance and high temperature resistance such as polymer composite materials can also be used to ensure its reliability and service life in a complex working environment, making the positioning effect better.

[0071] The above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed in this application can easily think of various changes or substitutions, and these should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

[0072] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A positioning tool for railway freight car welding, characterized in that include: A rectangular frame, one end of which is provided with a back plate, the size of the rectangular frame being adapted to the size of the carriage floor so that the carriage floor can pass through the rectangular frame; A support member, the support member is fixedly connected to the lower end of the rectangular frame, and the support member is used to place the carriage bottom plate; A walking mechanism, the walking mechanism moves back and forth between a first position and a second position, and the walking mechanism moves back and forth along the backboard direction; Wherein, when the walking mechanism is in the first position, the walking mechanism abuts against the back plate; when the walking mechanism is in the second position, the walking mechanism abuts against an end away from the back plate; A positioning mechanism is used to fix the position of the walking mechanism on the rectangular frame.

2. The positioning tooling for railway wagon welding according to claim 1, characterized in that: Two guide rail grooves are arranged on the top of the rectangular frame, and the guide rail grooves extend in the lateral direction.

3. The positioning tooling for railway freight car welding according to claim 1, characterized in that: The back plate is a structural member made of high-strength material, and the back plate is provided with a hollow layer.

4. The positioning tooling for railway wagon welding according to claim 1, wherein: The support member comprises: A plurality of adjustable feet, one end of each of the adjustable feet being connected to the rectangular frame, and each of the adjustable feet being suitable for adjusting the height of the adjustable feet; An elastic support block is arranged between the adjustable support foot and the rectangular frame.

5. The positioning tooling for railway freight car welding according to claim 4, wherein: The support member also includes a longitudinal rod, which is fixedly mounted at the middle of the adjustable foot. The longitudinal rod is used to place the car floor and provide a working space for welding the longitudinal rod.

6. The positioning tooling for railway freight car welding according to claim 2, characterized in that: The walking mechanism comprises: A double-axis guide wheel group, wherein the double-axis guide wheel group is movably arranged on the guide rail groove; A hydraulic drive cylinder drives the dual-axis guide wheel to move linearly along the guide rail groove.

7. The positioning tooling for railway wagon welding according to claim 6, wherein: The walking mechanism also includes a friction wheel set, and the friction wheel set abuts against the guide rail groove.

8. The positioning tooling for railway wagon welding according to claim 7, wherein: The walking mechanism further comprises a fixing device, one end of which is fixedly connected to the walking mechanism, and the other end of which is provided with a friction panel, and the friction panel is located in a first position against the back plate.

9. The positioning tooling for railway freight car welding according to claim 8, wherein: The fixing device is a hydraulic drive device, the fixing end of the hydraulic drive is fixedly connected to the walking mechanism, and the driving end of the hydraulic drive device is fixedly connected to the friction panel.

10. The positioning tooling for railway wagon welding according to claim 1, wherein: The positioning mechanism comprises: A telescopic device, wherein the telescopic device is fixedly connected to the walking mechanism, the telescopic device abuts against the inner edge of the rectangular frame in an extended state, and the telescopic direction of the telescopic device is a longitudinal direction; A positioning pressure plate is installed on the telescopic end of the telescopic device, and a friction layer is arranged on the positioning pressure plate.

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