Novel bogie frame assembly welding tooling with flexible welding platform

Abstract

The utility model discloses a novel bogie frame group welding frock belt flexible welding platform, including welding platform, the lower extreme fixed connection of welding platform has the platform support foot, the upper end positioning of welding platform has the side beam support device, the inner wall fixed connection of side beam support device lower extreme has locking pin, the upper end fixed connection of side beam support device has the bogie frame. The utility model discloses a novel bogie frame group welding frock belt flexible welding platform, and the low manufacturing cost is convenient to operate, and the space is smaller, and the service life is long, and the maintenance is simple, and the manpower cost is reduced, and the group welding is completed to the structure, and the platform is basically undamaged, and the economy is high, and the bogie frock applicability is strong, and the range of the bogie frame that the utility model discloses is wide, and each device in it can be used alone or in combination, and can be repeatedly used for many times, and the welding platform is the flexible welding platform, and can adopt the splicing structure according to the bogie frame size and space and modify the design.

Description

Technical Field

[0001] This utility model relates to the technical field of large-scale machinery assembly, specifically a novel steering frame welding fixture with a flexible welding platform. Background Technology

[0002] Currently, the assembly and welding of bogie frames for large-scale engineering equipment, especially railway freight cars and passenger cars, requires not only specialized welding equipment and professional welding technicians, but also essential welding fixtures. These fixtures are crucial for ensuring the quality of bogie assembly and welding. Using welding fixtures not only improves bogie production efficiency and accelerates the welding process, but also enhances welding quality. Controlling welding precision using the manufacturing accuracy of the fixtures is far more accurate than manual control, while significantly reducing the need for highly skilled operators. To ensure stable welding quality, it is essential to avoid over-reliance on the professional skills of the welding personnel, as this can easily lead to cyclical variations in welding quality, affecting the overall weld quality. Fixtures primarily perform functions such as positioning, clamping, fixing, and auxiliary support, and are generally designed as single-function or combinations of several functions depending on requirements. While ensuring functionality, the design of the fixtures must also consider other requirements such as economy, practicality, and interchangeability.

[0003] Currently, conventional bogie frame welding fixture designs primarily utilize existing welding platforms and matching fastening jigs, with modifications made to some components. Due to the specific nature of bogie projects, bogie frame welding fixtures are generally disposable; while some components may be modified, others are essentially unusable. Even the welding platform itself requires repair or modification before reuse. The fixing of positioning and clamping devices to the platform typically employs either bolted or welded connections. While bolted connections allow for quick assembly and disassembly, the characteristics of the threads can easily lead to cumulative errors, and the threaded surfaces require regular protection and maintenance. The platform also needs to pre-machine bolt holes. Welded connections offer precise positioning but require… The subsequent cutting and separation of the weld seam will severely damage the platform surface, requiring re-milling of the entire surface. Either way, this will increase the platform's operating cost and reduce its service life. In terms of clamping fixtures, quick clamps or self-made clamping devices are commonly used. However, the clamping force of conventional quick clamps is limited, and multiple clamping points are required to ensure clamping stability. This sacrifices the operator's working surface, which is not conducive to welding operations. Although self-made clamping devices meet the clamping requirements, their specialization means they cannot be interchanged with others. They are often disposable, have extremely low utilization rates, and poor adjustability, which brings certain adverse effects to the user process. Therefore, we propose a new type of bogie frame welding fixture with a flexible welding platform. Utility Model Content

[0004] Technical Problem Solved: To address the shortcomings of existing technologies, this utility model provides a novel bogie frame assembly welding fixture with a flexible welding platform. It boasts advantages such as long service life, simple and convenient maintenance, low maintenance costs, and a self-contained operating platform. The positioning and clamping devices are fixed to the platform using quick-locking pins, ensuring accurate and secure installation. It is easy to assemble and disassemble, highly interchangeable, and applicable to a wide range of bogies, including various specifications and types. However, it is not limited to bogie frame assembly welding. With simple modifications, this fixture can also be used for the assembly and welding of large mechanical equipment, demonstrating its broad applicability and effectively solving the problems mentioned in the background technology.

[0005] Technical solution: To achieve the above objectives, the technical solution adopted by this utility model is as follows: a novel bogie frame welding fixture with a flexible welding platform, comprising a welding platform, a platform support foot fixedly connected to the lower end of the welding platform, a side beam support device positioned and installed at the upper end of the welding platform, and a locking pin fixedly connected to the inner wall of the lower end of the side beam support device.

[0006] Preferably, a bogie frame is placed on the upper end of the side beam support device, the lower end of the welding platform is fixed to the upper end of the platform support feet by bolts and is evenly arranged, and the lower end of the side beam support device and the upper end of the welding platform are positioned by locking pins at the four corners.

[0007] Preferably, a center positioning device is installed in the middle of the inner wall of the bogie frame, a longitudinal beam positioning support device is fixedly connected to the middle of the upper end of the welding platform, and a crossbeam support device and a side beam positioning device are fixedly connected to the middle of the upper end of the welding platform. The longitudinal beam positioning support device, the crossbeam support device and the side beam positioning device are all located in the middle of the lower end of the bogie frame.

[0008] Preferably, the outer wall of the center positioning device penetrates the middle of the inner wall of the bogie frame and is used for positioning. The middle of the upper end of the welding platform is positioned and installed with the lower end of the longitudinal beam positioning support device, the crossbeam support device and the side beam positioning device by locking pins.

[0009] Preferably, both sides of the upper end of the welding platform are fixedly connected with transverse fastening devices, the center of the upper end of the welding platform is fixedly connected with a longitudinal beam vertical fastening device, the four corners of the center of the welding platform are fixedly connected with first flip-up vertical fastening devices, both sides of the upper end of the welding platform are fixedly connected with vertical fastening devices located on one side of the middle of the bogie frame, and one side of the side beam support device is fixedly connected with a second flip-up vertical fastening device located at the upper end of the welding platform.

[0010] Preferably, the lower end of the transverse locking device and both sides of the upper end of the welding platform are positioned and installed by locking pins. The center of the upper end of the welding platform is fixedly connected to the lower end of the vertical locking device of the longitudinal beam. The lower end of the first flip-up vertical locking device is fixed to the four corners of the center of the upper end of the welding platform by locking pins. The first flip-up vertical locking device is located inside the bogie frame. Both sides of the upper end of the welding platform are installed to the lower end of the vertical locking device by guide rails. The upper end of the welding platform is positioned to the lower end of the second flip-up vertical locking device by locking pins.

[0011] Beneficial Effects: Compared with existing technologies, this utility model provides a novel bogie frame assembly welding fixture with a flexible welding platform, which has the following beneficial effects: This novel bogie frame assembly welding fixture with a flexible welding platform has low manufacturing cost, is easy to operate, occupies less space, has a long service life, is simple to maintain, reduces labor costs, uses some standardized parts that can be purchased in bulk on the market, greatly reducing the cost of frame assembly welding, and leaves the platform virtually undamaged after assembly welding, resulting in extremely low maintenance costs and high economic efficiency. The bogie tooling has strong applicability and is suitable for a wide range of bogie frames. The various devices can be used individually or in combination and can be reused multiple times. This tooling can not only be used for bogie frame assembly, but also, after modification, for the assembly of large mechanical frames, making it highly practical. The welding platform is a three-dimensional flexible welding platform that can be modified and designed according to the size and space of the bogie frame. It can adopt a splicing structure, and the locking pin is a quick-locking pin with different specifications available. Manually operated, with a self-cleaning function, and easy maintenance, the center positioning device includes a center positioning device with adjustable guide rails and an adjustable lifting side beam support device. These can be adjusted or combined according to the characteristics of the bogie frame. The device is connected to the welding platform using locking pins, facilitating installation and disassembly. The vertical locking device includes a vertical locking device, a longitudinal beam vertical locking device, and a first flip-up vertical locking device. These can also be adjusted or combined according to the characteristics of the bogie frame. The device is also connected to the welding platform using locking pins, facilitating installation and disassembly. The lateral locking device uses a screw-type structure and can be adjusted according to the characteristics of the bogie frame. The device is also connected to the welding platform using locking pins, facilitating installation and disassembly. The support positioning device includes a side beam support device, a longitudinal beam positioning support device, and a crossbeam support device. These can be adjusted according to different frame structures. The device is connected to the welding platform using locking pins, facilitating installation and disassembly. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a novel steering frame welding fixture with a flexible welding platform according to this utility model.

[0013] Figure 2This is a side view of a novel steering frame welding fixture according to the present invention.

[0014] Figure 3 This is a top view schematic diagram of a novel steering frame welding fixture according to the present invention.

[0015] In the diagram: 1. Welding platform; 2. Locking pin; 3. Center positioning device; 4. Side beam support device; 5. Longitudinal beam positioning support device; 6. Horizontal beam support device; 7. Side beam positioning device; 8. Lateral locking device; 9. Longitudinal beam vertical locking device; 10. First flip-up vertical locking device; 11. Vertical locking device; 12. Second flip-up vertical locking device; 13. Bogie frame; 14. Platform support feet. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] like Figure 1-3 As shown, a novel bogie frame welding fixture with a flexible welding platform includes a welding platform 1. The lower end of the welding platform 1 is fixedly connected to a platform support foot 14, and the upper end of the welding platform 1 is positioned and installed with a side beam support device 4. The inner wall of the lower end of the side beam support device 4 is fixedly connected to a locking pin 2.

[0018] Furthermore, a bogie frame 13 is placed on the upper end of the side beam support device 4, and the lower end of the welding platform 1 and the upper end of the platform support foot 14 are fixed together by bolts and evenly arranged. The lower end of the side beam support device 4 and the four corners of the upper end of the welding platform 1 are all positioned by locking pins 2.

[0019] Furthermore, a center positioning device 3 is installed in the middle of the inner wall of the bogie frame 13, a longitudinal beam positioning support device 5 is fixedly connected to the middle of the upper end of the welding platform 1, and a crossbeam support device 6 and a side beam positioning device 7 are fixedly connected to the middle of the upper end of the welding platform 1. The longitudinal beam positioning support device 5, the crossbeam support device 6 and the side beam positioning device 7 are all located in the middle of the lower end of the bogie frame 13.

[0020] Furthermore, the outer wall of the center positioning device 3 penetrates the middle of the inner wall of the bogie frame 13 and is positioned thereby. The middle of the upper end of the welding platform 1 is positioned and installed with the lower end of the longitudinal beam positioning support device 5, the crossbeam support device 6 and the side beam positioning device 7 by locking pins 2.

[0021] Furthermore, both sides of the upper end of the welding platform 1 are fixedly connected with transverse fastening devices 8, the center of the upper end of the welding platform 1 is fixedly connected with a longitudinal beam vertical fastening device 9, the four corners of the center of the welding platform 1 are fixedly connected with first flip-up vertical fastening devices 10, both sides of the upper end of the welding platform 1 are fixedly connected with vertical fastening devices 11 located on one side of the middle of the bogie frame 13, and one side of the side beam support device 4 is fixedly connected with a second flip-up vertical fastening device 12 located at the upper end of the welding platform 1.

[0022] Furthermore, the lower end of the transverse locking device 8 is positioned and installed on both sides of the upper end of the welding platform 1 by locking pins 2. The center of the upper end of the welding platform 1 is fixedly connected to the lower end of the longitudinal beam vertical locking device 9. The lower end of the first flip-up vertical locking device 10 is fixed to the four corners of the center of the upper end of the welding platform 1 by locking pins 2. The first flip-up vertical locking device 10 is located inside the bogie frame 13. Both sides of the upper end of the welding platform 1 are installed with the lower end of the vertical locking device 11 by guide rails. The upper end of the welding platform 1 is positioned with the lower end of the second flip-up vertical locking device 12 by locking pins 2.

[0023] Working principle: This new type of bogie frame welding fixture with flexible welding platform mainly consists of a three-dimensional flexible welding platform, quick-locking pin assembly, positioning device, vertical tightening device, lateral tightening device, support positioning device, etc. The built-in welding platform 1 provides an installation operation surface for frame assembly, eliminating the need to prepare other matching assembly platforms. The positioning devices include: a center positioning device 3 with adjustable guide rails and a side beam positioning device 7. The vertical tightening devices include: a vertical tightening device 11 and a first flip-up vertical tightening device 10. The support and positioning devices include: side beam support device 4, longitudinal beam positioning support device 5, and crossbeam support device 6. Each device is connected to the platform via locking pin 2, enabling quick one-handed installation. It features low manufacturing cost, convenient operation, small footprint, long service life, simple maintenance, and reduced labor costs. Some parts utilize standardized components that can be purchased in bulk on the market, significantly reducing frame welding costs. After welding, the platform is virtually undamaged, maintenance costs are extremely low, and it is highly economical. The bogie tooling has strong applicability and is suitable for a wide range of bogie frames. This tooling can be used individually or in combination and is reusable. It can be used not only for assembling bogie frames but also, with modifications, for assembling large mechanical frames, making it highly practical. Welding platform 1 is a three-dimensional flexible welding platform made of high-strength carbon steel. The platform is impact-resistant and free from any porosity, sand holes, cold shuts, or cracks. The platform surface is polished to a surface roughness of Ra3.2. Special surface treatment effectively prevents weld spatter. Weld slag after assembly can be quickly removed with simple welding slag liquid, making maintenance very simple and convenient. Positioning pin holes are configured on all five sides of the platform, with a hole spacing accuracy within 100mm and an error within 50 micrometers with no cumulative error. When supported by standard legs, the platform can bear more than three tons per square meter. The design can be modified according to the dimensions and space of the bogie frame, and a splicing structure can be adopted. Locking pin 2 is a quick-locking pin made of a special high-hardness material and can be purchased in bulk on the market. The locking pin can be used for connecting various positioning and tightening devices to the platform or between platforms. The locking pin can be tightened with one hand. An O-ring on its outer surface prevents the pin from rotating during tightening and also cleans dust and debris from the hole surface. Insert the locking pin into the standard hole, then rotate the screw clockwise until the ball bearing inside the locking pin protrudes and tangents to the lower end of the platform or other accessories at a full angle, thus locking the component. To remove, rotate counterclockwise several times until the ball bearing is fully recessed into the locking pin, then remove it. Locking and disassembly are quick and do not easily damage the mounting surfaces. The locking force can reach 5 tons, and the shearing force can reach 25 tons. The center positioning device includes a center positioning device 3 with adjustable guide rails and an adjustable side beam positioning device 7, which can be adjusted or combined according to the characteristics of the bogie frame. The adjustable side beam positioning device 7 also uses a positioning pin to fix the base to the platform, and the upper part uses an inclined double T-slot structure to achieve vertical adjustment of the positioning plate.The double TC groove has high precision upper and lower mating surfaces. The adjustable plates can accommodate the positioning of side beams of various heights. Set screws on both sides can secure the position of the adjusting plates. The upper adjusting plate has a lifting ring for quick disassembly. The center positioning device 3 and the side beam support device 4 are connected to the welding platform 1 by locking pins 2, facilitating installation and disassembly. The center positioning device 3 is generally used for positioning side beams with cylindrical components. It features an adjustable guide rail, fixed to the platform with a positioning pin. The side beam's planar position is positioned by fine-tuning the center guide rod. The guide rail can be adjusted according to the frame requirements to suit different series of side beams. The support positioning device includes the side beam support device 4, the longitudinal beam positioning support device 5, and the transverse beam support device 6, which can be adjusted according to the frame requirements. The frame is adjusted according to different structures. The side beam support device 4 consists of two parts: the lower part uses a box-type structure to provide a stable support surface, and the upper part uses a nylon support. The support contacts the frame surface to effectively prevent damage during contact. The longitudinal beam positioning support device 5 also consists of two parts: the lower part uses a box-type structure to provide a stable support surface, and the upper part uses a nylon positioning block to ensure the support effect and also to position the longitudinal beam. The basic structure of the crossbeam support device 6 is the same as that of the side beam support device 4. The vertical locking device includes a vertical locking device 11, a longitudinal beam vertical locking device 9, and a first flip-up vertical locking device 10, which can be adjusted or combined according to the characteristics of the bogie frame. The longitudinal beam vertical locking device 9 consists of two parts: the lower part uses a box-type structure to provide a stable support surface, and the upper part uses a nylon positioning block to ensure the support effect and position the longitudinal beam. The support uses a box-type structure to provide a stable support surface and connects to the platform with positioning pins. The upper part adopts a sleeve structure, allowing the entire support to rotate 360 ​​degrees. The end uses a screw adjustment device to achieve clamping requirements. The contact surface with the frame is protected by a nylon sleeve. The first flip-up vertical locking device 10 also consists of two parts. The lower part uses a box-type structure to provide a stable support surface and connects to the platform with positioning pins. The upper part uses a double center pin structure. The lower center pin connects the upper and lower parts of the device into a whole. The upper center pin has a detachable structure, which allows for quick disassembly and flipping of the upper structure. The end also uses a screw adjustment device to achieve clamping requirements. The contact surface with the frame is protected by a nylon sleeve. The flip-up vertical locking device is suitable for frequent disassembly and reassembly. To improve operational efficiency, the vertical locking device 11 also consists of two parts. The lower part uses a box-type structure to provide a stable support surface and is connected to the platform with a positioning pin. The upper part uses a single center pin structure, with the center pin connecting the upper and lower parts of the device into a whole and allowing for quick positioning. The end also uses a screw adjustment device to achieve the clamping requirements. The contact surface with the frame is protected with a nylon sleeve. The vertical locking device is suitable for parts that are not frequently disassembled. The lateral locking device 8 uses a screw pair structure, which can be adjusted according to the characteristics of the bogie frame. The base is also fixed to the platform with a positioning pin. The upper part uses a screw adjustment device to achieve the clamping requirements. The end uses a nylon sleeve to prevent damage to the surface of the frame. The bogie frame 13 is a specially processed product for the welding platform of this application.

[0024] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel bogie frame assembly welding fixture with a flexible welding platform, comprising a welding platform (1), characterized in that: The lower end of the welding platform (1) is fixedly connected to a platform support foot (14), and the upper end of the welding platform (1) is positioned and installed with a side beam support device (4). The inner wall of the lower end of the side beam support device (4) is fixedly connected with a locking pin (2).

2. The novel bogie frame welding fixture with flexible welding platform according to claim 1, characterized in that: The upper end of the side beam support device (4) is equipped with a bogie frame (13). The lower end of the welding platform (1) and the upper end of the platform support foot (14) are fixed by bolts and evenly arranged. The lower end of the side beam support device (4) and the four corners of the upper end of the welding platform (1) are positioned by locking pins (2).

3. The novel bogie frame assembly welding fixture with flexible welding platform according to claim 2, characterized in that: A center positioning device (3) is installed in the middle of the inner wall of the bogie frame (13). A longitudinal beam positioning support device (5) is fixedly connected to the middle of the upper end of the welding platform (1). A crossbeam support device (6) and a side beam positioning device (7) are fixedly connected to the middle of the upper end of the welding platform (1). The longitudinal beam positioning support device (5), the crossbeam support device (6) and the side beam positioning device (7) are all located in the middle of the lower end of the bogie frame (13).

4. The novel bogie frame assembly welding fixture with flexible welding platform according to claim 3, characterized in that: The outer wall of the center positioning device (3) penetrates the middle of the inner wall of the bogie frame (13) and is positioned thereby. The middle of the upper end of the welding platform (1) is positioned and installed with the lower end of the longitudinal beam positioning support device (5), the cross beam support device (6) and the side beam positioning device (7) by locking pins (2).

5. A novel bogie frame assembly welding fixture with a flexible welding platform according to claim 4, characterized in that: The welding platform (1) is fixedly connected to both sides of the upper end with a transverse fastening device (8), the center of the upper end of the welding platform (1) is fixedly connected with a longitudinal beam vertical fastening device (9), the four corners of the center of the welding platform (1) are fixedly connected with a first reversible vertical fastening device (10), the two sides of the upper end of the welding platform (1) are fixedly connected with a vertical fastening device (11) and located on one side of the middle of the bogie frame (13), and one side of the side beam support device (4) is fixedly connected with a second reversible vertical fastening device (12) and the second reversible vertical fastening device (12) is located at the upper end of the welding platform (1).

6. A novel bogie frame assembly welding fixture with a flexible welding platform according to claim 5, characterized in that: The lower end of the transverse fastening device (8) is positioned and installed on both sides of the upper end of the welding platform (1) by locking pins (2). The center of the upper end of the welding platform (1) is fixedly connected to the lower end of the longitudinal beam vertical fastening device (9). The lower end of the first flip-up vertical fastening device (10) is fixed to the four corners of the center of the upper end of the welding platform (1) by locking pins (2). The first flip-up vertical fastening device (10) is located inside the bogie frame (13). Both sides of the upper end of the welding platform (1) are installed with the lower end of the vertical fastening device (11) by guide rails. The upper end of the welding platform (1) is positioned with the lower end of the second flip-up vertical fastening device (12) by locking pins (2).

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