A device for inspecting the flaring of aluminum profiles for railcar traction seats

Abstract

This utility model relates to the field of destructive physical testing and inspection of aluminum profiles, and discloses a flaring inspection device for aluminum profiles used in railcar traction seats. The device includes a flaring main structure, a cylinder, a positioning fixture, a flaring fixture, a wedge-shaped cone pin, and a conical core. The flaring main structure has a worktable. The cylinder is connected to the flaring main structure, with its hydraulic rod extending out of the cylinder and positioned above the worktable. The positioning fixture is on the upper surface of the worktable. The flaring fixture is positioned on the upper surface of the worktable and inside the traction seat aluminum profile sample. The wedge-shaped cone pin is positioned on the outer surface of the flaring fixture, and the conical core is positioned at the lower end of the hydraulic rod. During operation, the lower end of the conical core presses down on the flaring fixture, pushing it to flare outwards. This utility model avoids the safety hazards and human errors associated with traditional sawing methods and significantly improves testing efficiency and accuracy.

Description

Technical Field

[0001] This utility model relates to the field of destructive physical testing and inspection of aluminum profiles, specifically to a device for inspecting the flaring of aluminum profiles for railcar traction seats. Background Technology

[0002] With the rapid development of urban rail transit construction in my country, the market demand for urban rail transit vehicles is increasing daily. Aluminum, as a key raw material in rail vehicle manufacturing, significantly contributes to vehicle lightweighting. Large-section, complex components, such as the side beams or sleeper beams of the railcar body, not only serve a connecting function but also bear important load-bearing responsibilities. These components require integrity and must enhance the overall load-bearing strength of the vehicle. Therefore, ensuring welding quality while meeting the mechanical properties and dimensional requirements of the products becomes a critical technical challenge. Destructive testing is particularly important for the special locations of the fusion joints of ultra-thick-walled, large-section aluminum profiles in railcar bodies.

[0003] Currently, the following shortcomings exist in the inspection of welds at special locations in the fusion joints of aluminum profiles for ultra-thick-walled, large-section railcar bodies: Aluminum profile pressure testing machines cannot directly break welds at these special locations; instead, small plates with the welds must be cut by sawing. This not only increases the workload of testing personnel but may also affect the testing cycle and reduce work efficiency. Using vertical hand saws or horizontal large saws for weld cutting poses safety hazards and is susceptible to human and environmental factors, potentially leading to inaccurate fusion joint locations and affecting the accuracy of inspection results. For welds in the corner areas of aluminum profile edges, the base of the aluminum profile pressure testing machine cannot provide sufficient support for the breaking test. The aluminum profiles installed on the railcar traction seat are complex products with large cross-sections and varying wall thicknesses. When simply performing flaring inspection, the tearing location often appears in the stress concentration area at the root of the connection between two thin-walled and thick-walled sections, while the thick-walled areas and other thin-walled fusion joints are difficult to inspect accurately. For the special location of the fusion joint of ultra-thick and large-section railcar aluminum profiles that cannot be inspected by the GB / T32790-2016 standard, the current method is to test the transverse mechanical properties of the fusion joint and the microstructure of the fusion joint.

[0004] Therefore, how to quickly, stably, and accurately inspect the special locations of the fusion joints of ultra-thick-walled, large-section aluminum profiles for railcar bodies has become a critical problem that urgently needs to be solved. Currently, there is an urgent need to provide a device and method for inspecting the flaring joints of aluminum profiles used in railcar traction seats. The inspection of ultra-thick-walled, large-section fusion joints of aluminum profiles for rail vehicles and subways must be rigorous and factual, allowing no negligence or omissions, as this directly relates to the safety of people's lives and property. Therefore, inventing a device and method for inspecting the flaring joints of aluminum profiles used in railcar traction seats has significant practical significance and application value. Utility Model Content

[0005] To address the problems of inefficient and dangerous sample collection, insufficient support making it difficult to break welds, numerous blind spots, and outdated and inefficient standards in the inspection of welds at special locations of the fusion joints of aluminum profiles for ultra-thick and large-section railcar bodies, this utility model provides an inspection device for the flaring joints of aluminum profiles for railcar traction seats.

[0006] The technical solution adopted by this utility model to achieve the above objectives is: a device for inspecting the flaring of aluminum profiles for railcar traction seats, comprising:

[0007] A flared main structure, wherein the flared main structure is provided with a workbench;

[0008] A cylinder, which is connected to the flared main body structure, has a hydraulic rod extending out of the cylinder and positioned above the worktable;

[0009] A positioning fixture is provided on the upper surface of the workbench for fixing the aluminum profile sample of the traction seat.

[0010] An expansion device is provided on the upper surface of the workbench and is located inside the aluminum profile sample of the traction seat.

[0011] A wedge-shaped apex pin is disposed on the outer surface of the expansion device, and the position of the wedge-shaped apex pin is opposite to the weld seam of the fusion joint of the aluminum profile sample of the traction seat.

[0012] A conical core is located at the lower end of the hydraulic rod. During operation, the lower end of the conical core presses down on the expanding device, causing the expanding device to expand outwards.

[0013] According to some embodiments of the present invention, a flaring inspection device for aluminum profiles of railcar traction seats includes six triangular prism-shaped flaring tools. The six flaring tools are arranged on the upper surface of the workbench, and the arrangement of the six flaring tools matches the shape of the aluminum profile sample of the traction seat. The center of the flaring tool is provided with a conical groove that matches the lower end of the wedge-shaped pin. The flaring tool is pushed by the conical pin to make the six flaring tools diverge.

[0014] According to some embodiments of the present invention, a flaring inspection device for aluminum profiles of railcar traction seats is provided, wherein each flaring tool has a protrusion at its lower end and a groove is provided on the upper surface of the workbench, the protrusion and the groove cooperate with each other to restrict the running direction of the flaring tool.

[0015] According to some embodiments of the present invention, a railcar body traction seat aluminum profile flaring inspection device is provided on the upper surface of the workbench, and the positioning fixture is disposed on the positioning fixture slide.

[0016] According to some embodiments of the present invention, a flaring inspection device for aluminum profiles of railcar traction seats is provided, wherein the positioning fixture abuts against the inner and outer sides of the aluminum profile sample of the traction seat and is set on the left and right sides of the weld seam of the fusion joint.

[0017] According to some embodiments of the present invention, a flaring inspection device for aluminum profiles of a railcar traction seat is provided, wherein the upper end of the conical core is threadedly connected to the hydraulic rod.

[0018] According to some embodiments of the present invention, a flaring inspection device for aluminum profiles of railcar traction seats is provided, wherein the cylinder is disposed inside the flaring main structure.

[0019] According to some embodiments of the present invention, a flaring inspection device for aluminum profiles of railcar traction seats is provided, wherein the flaring main structure is connected to a control system, and the control system is used to control the downward pressure of the hydraulic rod.

[0020] According to some embodiments of the present invention, a flaring inspection device for aluminum profiles of railcar traction seats is provided, wherein a sensor is connected to the conical top core. The sensor is used to monitor the mechanical performance data of the flaring device in real time during the process of the flaring device pressing down and pushing the flaring device, and transmits the mechanical performance data to the control system.

[0021] According to some embodiments of the present invention, a railcar body traction seat aluminum profile flaring inspection device is provided, wherein the control system is electrically connected to the cylinder and the control system is electrically connected to the sensor.

[0022] This utility model discloses a flaring inspection device for aluminum profiles used in railcar traction seats, filling a gap in domestic and international aluminum processing testing and flaring technology. Through innovative inspection devices and methods, it solves the problem of the inability to efficiently and accurately inspect special locations of fusion welds in ultra-thick, large-section aluminum profiles. This device uses a dedicated flaring fixture, enabling rapid, stable, and accurate destructive testing of special locations at the fusion weld, avoiding the safety hazards and human errors associated with traditional sawing methods, significantly improving testing efficiency and accuracy. By optimizing the inspection process and device design, the number of traditional sawing steps is reduced, significantly shortening the inspection time and avoiding cumbersome cutting processes, thus reducing the workload of testing personnel. Furthermore, the mechanized and standardized inspection methods reduce the interference of human operation and environmental factors on the test results, improving the stability and reliability of the test. The flaring fixture can accurately locate special locations at the fusion weld, ensuring the accuracy of the inspection results and meeting the high-precision requirements for precise positioning of the fusion weld. Meanwhile, the device avoids the safety hazards of traditional sawing methods and improves the consistency of testing and the uniformity of quality evaluation through standardized operation, ensuring the safety and reliability of aluminum profile testing for rail vehicles. Attached Figure Description

[0023] Figure 1 This is a cross-sectional structural schematic diagram of a flared inspection device for aluminum profiles of a railcar traction seat according to this utility model.

[0024] Figure 2 This is a three-dimensional structural diagram of the expansion device of this utility model.

[0025] In the figure: 1. Flared main structure, 2. Hydraulic rod, 3. Aluminum profile sample of traction seat, 4. Flaring device, 5. Wedge cone corner pin, 6. Positioning fixture, 7. Positioning fixture slide, 8. Sensor, 9. Conical core, 10. Control system. Detailed Implementation

[0026] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "installation," "connection," and "joining" 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] This embodiment provides a device for inspecting the flaring of aluminum profiles for railcar traction seats, such as... Figure 1 As shown, the device includes a flaring main structure 1, a cylinder, a positioning fixture 6, a flaring device 4, a wedge-shaped pin 5, and a conical core 9. The flaring main structure 1 is equipped with a worktable. The cylinder is connected to the flaring main structure 1. The hydraulic rod 2 of the cylinder extends out of the cylinder and is positioned above the worktable. The positioning fixture 6 is positioned on the upper surface of the worktable to fix the traction seat aluminum profile sample 3. The flaring device 4 is positioned on the upper surface of the worktable and is located inside the traction seat aluminum profile sample 3. The wedge-shaped pin 5 is positioned on the outer surface of the flaring device 4, and the position of the wedge-shaped pin 5 is opposite to the weld seam of the fusion joint of the traction seat aluminum profile sample 3. The conical core 9 is positioned at the lower end of the hydraulic rod 2. During operation, the lower end of the conical core 9 presses down on the flaring device 4, pushing the flaring device 4 to expand.

[0029] As a preferred embodiment, specifically, the flared main structure 1 is made of high-strength mold steel, and the worktable can stably support the ultra-thick-walled, large-section aluminum profile. For example... Figure 2 As shown, the expansion device 4 includes six triangular prism-shaped expansion tools, arranged on the upper surface of the worktable. The arrangement of the six expansion tools matches the shape of the aluminum profile sample 3 of the traction seat. The center of the expansion device 4 has a conical groove that matches the lower end of the wedge-shaped apex pin 5. The expansion device 4 is pressed down by the conical apex core 9, pushing the six expansion tools to diverge. Each expansion tool has a protrusion at its lower end, and the upper surface of the worktable has a groove. The protrusion and groove cooperate to act as a slide, limiting the direction of the expansion tool's movement.

[0030] In a preferred embodiment, the worktable surface is provided with a positioning fixture slide 7, and the positioning fixture 6 is disposed on the positioning fixture slide 7. The positioning fixture 6 can move and run on the positioning fixture slide 7. The positioning fixture 6 can adapt to aluminum profile samples 3 of different sizes and shapes, ensuring precise positioning and support of the special position of the fusion weld of the aluminum profile sample 3 of the traction seat, and realizing the locking function. The positioning fixture 6 abuts against the inner and outer sides of the aluminum profile sample 3 of the traction seat, and is disposed on the left and right sides of the fusion weld.

[0031] As a preferred embodiment, the upper end of the conical core 9 is threaded to the hydraulic rod 2. The threaded connection facilitates the disassembly of the conical core 9. In actual operation, the conical core 9 can be replaced according to the different conditions of the traction seat aluminum profile sample 3 and the expansion device 4.

[0032] As a preferred embodiment, the cylinder is specifically located inside the flaring main structure 1. The cylinder transmits pressure through the hydraulic oil in the sealed cavity to control the operation of the hydraulic rod 2, which can apply uniform pressure to the hydraulic rod 2 to achieve precise expansion of the expansion device 4.

[0033] In a preferred embodiment, the flared main structure 1 is connected to a control system 10, which controls the downward pressure of the hydraulic rod 2. The conical top core 9 is connected to a sensor 8, which monitors the mechanical performance data of the expanding device 4 during its downward pressure process and transmits the data to the control system 10, which analyzes the data. More specifically, the control system 10 is electrically connected to both the cylinder and the sensor 8.

[0034] In this embodiment, an flaring test was conducted on the isosceles triangular aluminum profile specimen 3 of the traction seat. The aluminum profile specimen 3 of the traction seat has six fusion welds, two fusion welds on each of the two identical isosceles sides, the wall thickness of the two isosceles sides is 13mm, and there are two fusion welds on the bottom side, the wall thickness of the bottom side is 38mm. The flaring device 4 is also designed as an isosceles triangular pyramid flaring device.

[0035] The use of the inspection device for the flaring of aluminum profiles for railcar traction seats according to this utility model includes the following steps:

[0036] (1) Sample preparation: Place the aluminum profile sample 3 of the ultra-thick cross section traction seat to be inspected on the positioning fixture 6, adjust the positioning fixture 6 and make the position of the positioning fixture 6 on the left and right sides of the fusion weld, and ensure that the position of the fusion weld is aligned with the wedge cone pin 5.

[0037] (2) Flaring test: Start the cylinder so that the hydraulic rod 2 drives the conical core 9 to press down, push the flaring device 4 to run in a divergent manner, and the wedge cone pin 5 applies uniform pressure to the weld joint until the aluminum profile sample 3 of the traction seat breaks.

[0038] (3) Data analysis: The mechanical performance data of the aluminum profile sample 3 of the traction seat is collected in real time by the sensor 9 and transmitted to the control system 10 for analysis. The control system 10 generates an inspection report.

[0039] (4) Result evaluation: Evaluate the quality of the fusion weld according to the inspection report and determine whether the aluminum profile sample 3 of the traction seat meets the design requirements.

[0040] This invention has significant practical application value, effectively solving the technical challenge of inspecting the special locations of fusion welds in aluminum profiles for ultra-thick, large-section railcar bodies. It provides the rail vehicle manufacturing industry with an efficient, accurate, and safe testing method, yielding significant economic and social benefits. The device, through an innovatively designed expansion fixture 4, combined with core components such as a hydraulic rod 2, a sensor 8, and a positioning fixture 6, enables direct crushing tests on the fusion welds of aluminum profiles. This design not only avoids the safety hazards and human errors associated with traditional sawing methods but also significantly improves testing efficiency and accuracy.

[0041] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A device for inspecting the flaring of an aluminum profile of a railcar body draft seat, characterized in that, include The flared main structure (1) is provided with a workbench; A cylinder is connected to the flared main structure (1), and the hydraulic rod (2) of the cylinder extends out of the cylinder and is positioned above the worktable; Positioning fixture (6) is set on the upper surface of the workbench and is used to fix the aluminum profile sample (3) of the traction seat. Expanding device (4), the expanding device (4) is disposed on the upper surface of the workbench and is disposed inside the aluminum profile sample (3) of the traction seat; The wedge-shaped corner pin (5) is disposed on the outer surface of the expansion device (4), and the position of the wedge-shaped corner pin (5) is opposite to the weld seam of the fusion joint of the aluminum profile sample (3) of the traction seat; A conical top core (9) is located at the lower end of the hydraulic rod (2). During operation, the lower end of the conical top core (9) presses down on the expanding device (4) to drive the expanding device (4) to expand.

2. The inspection device for flaring of aluminum profiles for railcar traction seats according to claim 1, characterized in that, The expansion device (4) includes six triangular prism-shaped expansion tools. The six expansion tools are arranged on the upper surface of the workbench, and the arrangement of the six expansion tools matches the shape of the aluminum profile sample (3) of the traction seat. The center of the expansion device (4) is provided with a conical groove that matches the lower end of the wedge cone pin (5). The expansion device (4) is pushed down by the conical core (9) to make the six expansion tools diverge and run.

3. The inspection device for flaring of aluminum profiles for railcar traction seats according to claim 2, characterized in that, Each of the expansion tools has a protrusion at its lower end, and the upper surface of the worktable has a groove. The protrusion and the groove cooperate with each other to restrict the running direction of the expansion tool.

4. The inspection device for flaring of aluminum profiles for railcar traction seats according to claim 1, characterized in that, The workbench surface is provided with a positioning fixture slide (7), and the positioning fixture (6) is set on the positioning fixture slide (7).

5. The inspection device for flaring of aluminum profiles for railcar traction seats according to claim 1, characterized in that, The positioning fixture (6) abuts against the inner and outer sides of the aluminum profile sample (3) of the traction seat, and is set on the left and right sides of the weld seam of the fusion joint.

6. The inspection device for flaring of aluminum profiles for railcar traction seats according to claim 1, characterized in that, The upper end of the conical top core (9) is threadedly connected to the hydraulic rod (2).

7. The inspection device for flaring of aluminum profiles for railcar traction seats according to claim 1, characterized in that, The cylinder is located inside the flared main structure (1).

8. The inspection device for flaring of aluminum profiles for railcar traction seats according to claim 1, characterized in that, The flared main structure (1) is connected to a control system (10), which is used to control the downward pressure of the hydraulic rod (2).

9. The inspection device for flaring of aluminum profiles for railcar traction seats according to claim 8, characterized in that, The conical top core (9) is connected to a sensor (8), which is used to monitor the mechanical performance data of the expanding device (4) in real time during the process of pressing down and pushing the expanding device (4), and transmit the mechanical performance data to the control system (10).

10. The inspection device for flaring of aluminum profiles for railcar traction seats according to claim 9, characterized in that, The control system (10) is electrically connected to the cylinder and the control system (10) is electrically connected to the sensor (8).

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