A front support frame auxiliary welding tool for a harvester

Abstract

A kind of harvester front support frame auxiliary welding tool, including welding platform, the initial positioning component of being set with the positioning hole cooperation on front support frame, establish reference position and support front support frame is positioned on welding platform, welding platform is positioned and fixed with the connecting seat positioning component of being set on the connecting seat of front support frame, welding platform is positioned and is supported with the steel beam positioning component for the steel beam of multiple different directions of front support frame below front support frame, welding platform is also positioned with multiple for the auxiliary accessory positioning component of being set on front support frame auxiliary accessory, welding platform is also positioned with the steel beam compression component for the steel beam of front support frame and the connecting seat compression component of the connecting seat of front support frame;The utility model aims at solving its positioning difficult in the welding process, the precision of poor, low efficiency problem caused by depending on manual measurement, to realize quick, accurate batch production.

Description

Technical Field

[0001] This utility model relates to the field of welding tooling technology, and more specifically, to an auxiliary welding tooling for the front support frame of a harvester. Background Technology

[0002] The front support frame is one of the most important support components of the harvester's harvesting section. The quality of its processing determines the stability of the harvester's harvesting section to a certain extent, thus affecting the overall working quality and efficiency of the harvester.

[0003] When welding the front support frame, precise welding and fixing of steel beams, connecting seats, and various auxiliary accessories in different directions of the front support frame is required. This necessitates measuring and calibrating the dimensions between the components after they are placed. When the front support frames to be welded are produced in batches and are of a single type, manually measuring and calibrating the dimensions between the components before each welding operation would significantly reduce work efficiency and increase the labor intensity of workers. Furthermore, manual measurement will always introduce operational errors, resulting in deviations in the quality of the welded finished product. Therefore, we propose an auxiliary welding fixture for the front support frame of a harvester. Utility Model Content

[0004] This utility model provides an auxiliary welding fixture for the front support frame of a harvester, which aims to solve the problems of difficult positioning during the welding process, poor accuracy and low efficiency caused by reliance on manual measurement, thereby achieving fast and accurate mass production.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A welding fixture for an auxiliary front support frame of a harvester includes a welding platform, an initial positioning component that engages with positioning holes on the front support frame to establish a reference position and support the front support frame, a connecting seat positioning component that positions and fixes the connecting seat on the front support frame, a steel beam positioning component located below the front support frame on the welding platform for supporting and positioning multiple steel beams of the front support frame in different directions, multiple auxiliary accessory positioning components that position auxiliary accessories on the front support frame, a steel beam clamping component that clamps the steel beams of the front support frame, and a connecting seat clamping component that clamps the connecting seat of the front support frame.

[0006] The following are further optimizations of the above technical solution by this utility model: The initial positioning component includes a positioning cylinder fixedly installed on the welding platform. The diameter of the positioning cylinder telescopic rod is adapted to the inner diameter of the positioning hole, and the cylinder body diameter of the positioning cylinder is larger than the inner diameter of the positioning hole.

[0007] Further optimization: The connecting seat positioning assembly includes a limiting plate fixedly installed on the welding platform. Limiting holes are provided on the four corners of the limiting plate, and the limiting holes correspond one-to-one with the four holes provided on the connecting seat of the front support frame.

[0008] Further optimization: The limiting plate is connected to the connecting seat of the front support frame by inserting the positioning pin into the limiting hole and the corresponding hole on the connecting seat of the front support frame.

[0009] Further optimization: The steel beam positioning assembly includes multiple positioning blocks that are vertically fixedly installed on the welding platform. At least two positioning blocks are provided at the bottom of each steel beam, and each positioning block has a groove that matches the cross-sectional shape of the corresponding steel beam.

[0010] Further optimization: The auxiliary accessory positioning assembly includes multiple mounting positioning plates that are vertically fixed on the welding platform, and the shape and size of each mounting positioning plate are adapted to the corresponding auxiliary accessory.

[0011] Further optimization: The steel beam clamping assembly includes multiple first telescopic cylinders that are vertically fixedly installed on the top of the welding platform, and the multiple first telescopic cylinders are respectively distributed on one side of the corresponding steel beam.

[0012] Further optimization: The telescopic end of the first telescopic cylinder is fixedly installed with a first pressure plate that is horizontally arranged, and the bottom of the first pressure plate is arranged opposite to the top of the steel beam.

[0013] Further optimization: The connecting seat clamping assembly includes two second telescopic cylinders symmetrically arranged on both sides of the limiting plate. The second telescopic cylinders are horizontally fixed on the top of the welding platform via mounting seats.

[0014] Further optimization: The extension end of the second telescopic cylinder is hinged to a second pressure plate, and the second pressure plate is arranged opposite to the side of the connecting seat of the front support frame.

[0015] In this invention, the initial positioning component works in conjunction with the connecting seat positioning component and the steel beam positioning component to ensure that all components of the front support frame are quickly aligned with the reference position, reducing manual adjustment time. At the same time, the multi-point positioning design of the welding platform can fix the steel beams and connecting seats in different directions at the same time, significantly improving assembly accuracy and avoiding rework caused by misalignment, making it especially suitable for mass production.

[0016] In this invention, the steel beam clamping assembly and the connecting seat clamping assembly provide uniform force during the welding process, preventing component deformation or displacement and ensuring weld consistency. The addition of the auxiliary accessory positioning assembly further expands the applicability of the tooling, enabling precise welding of various auxiliary accessories and improving the overall structural strength and process reliability.

[0017] This utility model positioning component makes the placement and positioning of the front support frame component on the welding platform quick and convenient, reducing manual measurement and adjustment time, significantly shortening welding preparation time and improving production efficiency in mass production; at the same time, the precise positioning and stable support structure meet the requirements of automated welding equipment, and the introduction of automated welding can improve welding speed and quality, reduce labor costs, ensure the consistency of the welding process, and facilitate the realization of automated welding.

[0018] This utility model welding fixture reduces the skill requirements of technicians, improves process consistency, ensures welding consistency, is simple and convenient to reuse and repeat production, and ensures workpiece welding consistency in mass production.

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model; Figure 2 This is a top view of the overall structure in an embodiment of this utility model.

[0021] In the diagram: 1-Front support frame; 11-Steel beam; 12-Connecting seat; 13-Positioning hole; 14-Auxiliary accessories; 2-Welding platform; 3-Initial positioning assembly; 4-Connecting seat positioning assembly; 41-Limiting plate; 42-Limiting hole; 43-Positioning pin; 5-Steel beam positioning assembly; 6-Auxiliary accessory positioning assembly; 7-Steel beam clamping assembly; 71-First telescopic cylinder; 72-First pressure plate; 8-Connecting seat clamping assembly; 81-Second telescopic cylinder; 82-Second pressure plate. Detailed Implementation

[0022] like Figure 1 As shown, this welding fixture is used to weld the front support frame 1 of a harvester. The front support frame 1 includes a frame body welded together from multiple steel beams 11 in different directions. Connecting seats 12 are welded to both ends of the same side of the frame body. Positioning holes 13 are opened near the other end of the frame body. Multiple auxiliary accessories 14 are also welded onto the frame body.

[0023] like Figure 1-2As shown, an auxiliary welding fixture for a front support frame of a harvester includes a welding platform 2, an initial positioning component 3 that engages with positioning holes 13 on the front support frame 1 to establish a reference position and support the front support frame 1, a connecting seat positioning component 4 that positions and fixes the connecting seat 12 on the front support frame 1, a steel beam positioning component 5 located below the front support frame 1 on the welding platform 2 for supporting and positioning multiple steel beams 11 in different directions on the front support frame 1, multiple auxiliary accessory positioning components 6 that position auxiliary accessories 14 installed on the front support frame 1, a steel beam clamping component 7 that clamps the steel beams 11 of the front support frame 1, and a connecting seat clamping component 8 that clamps the connecting seat 12 of the front support frame 1.

[0024] This design, firstly, ensures that the components of the front support frame 1 are quickly aligned with the reference position through the coordinated action of the initial positioning component 3, the connecting seat positioning component 4, and the steel beam positioning component 5, reducing manual adjustment time. At the same time, the multi-point positioning design of the welding platform 2 can simultaneously fix the steel beam 11 and the connecting seat 12 in different directions, significantly improving assembly accuracy and avoiding rework caused by misalignment, making it especially suitable for mass production.

[0025] Secondly, the steel beam clamping assembly 7 and the connecting seat clamping assembly 8 provide uniform force during the welding process, preventing component deformation or displacement and ensuring weld consistency. The addition of the auxiliary accessory positioning assembly 6 further expands the applicability of the tooling, enabling precise welding of various auxiliary accessories and improving the overall structural strength and process reliability.

[0026] Furthermore, the positioning component makes the placement and positioning of the front support frame 1 on the welding platform 2 quick and convenient, reducing manual measurement and adjustment time, significantly shortening welding preparation time and improving production efficiency in mass production; at the same time, the precise positioning and stable support structure meet the requirements of automated welding equipment, and the introduction of automated welding can improve welding speed and quality, reduce labor costs, ensure the consistency of the welding process, and facilitate the realization of automated welding.

[0027] Finally, welding fixtures reduce the skill requirements of technicians, improve process consistency, ensure welding consistency, are simple and convenient to reuse, and can be used repeatedly for mass production, ensuring the welding consistency of workpieces.

[0028] The initial positioning component 3 includes a positioning cylinder fixedly installed on the welding platform 2. The diameter of the positioning cylinder telescopic rod is adapted to the inner diameter of the positioning hole 13, and the cylinder body diameter of the positioning cylinder is larger than the inner diameter of the positioning hole 13.

[0029] With this design, the telescopic rod of the positioning cylinder is inserted into the positioning hole 13 to provide a precise initial reference positioning for the front support frame 1; at the same time, the diameter of the positioning cylinder body is larger than that of the positioning hole 13, so after the telescopic rod of the positioning cylinder is inserted, the positioning cylinder body can be supported in the area around the positioning hole 13, increasing positioning stability and preventing the material around the hole from being deformed by force.

[0030] In this embodiment, the positioning cylinder is a single-guide rod cylinder (such as the SMCMGGL series or Airtac SCS series). The cylinders are all commercially available products, and their installation methods and positioning principles are well known to those skilled in the art, so they will not be described in detail here.

[0031] The connecting seat positioning assembly 4 includes a limiting plate 41 fixedly installed on the welding platform 2. Each of the four corners of the limiting plate 41 has a limiting hole 42, and the limiting hole 42 corresponds to and is adapted to the four holes provided on the connecting seat 12 of the front support frame 1.

[0032] The limiting plate 41 is connected to the connecting seat 12 of the front support frame 1 by inserting the positioning pin 43 into the limiting hole 42 and the corresponding hole on the connecting seat 12 of the front support frame 1.

[0033] This design achieves precise positioning from multiple angles by having the limiting holes 42 at the four corners of the limiting plate 41 correspond one-to-one with the holes on the connecting seat 12. Like a square frame, it ensures the positional accuracy of the connecting seat 12 in the plane, preventing it from rotating or shifting. At the same time, the fit between the limiting holes 42 and the holes of the connecting seat 12, as well as the pin connection, ensures the precise positioning of the connecting seat 12 during welding and lays a precise foundation for the subsequent connection with the chassis and the transmission of force.

[0034] Secondly, the way the positioning pin 43 connects the limiting plate 41 and the connecting seat 12 is stable and can withstand shear force and tension. It can effectively resist thermal stress and other external interference during the welding process, prevent the connecting seat 12 from shifting. The limiting plate 41, as a fixing component, also provides additional support for the connecting seat 12, resists deformation, ensures that the connecting seat 12 maintains its shape and position, and guarantees the welding quality and performance of the connecting seat 12.

[0035] Furthermore, the positioning and installation process of the connector 12 is extremely simple. Operators only need to align the holes and insert the pin to complete the positioning. This can significantly save time and labor costs and improve work efficiency in mass production. Moreover, by observing the alignment of the holes, it is easy to check and adjust the position to ensure accurate positioning.

[0036] The steel beam positioning assembly 5 includes multiple positioning blocks that are vertically fixed on the welding platform 2. At least two positioning blocks are provided at the bottom of each steel beam 11, and each positioning block has a groove that matches the cross-sectional shape of the corresponding steel beam 11.

[0037] This design, firstly, by setting at least two positioning blocks at the bottom of each steel beam 11, provides multi-position positioning, acting as multiple fulcrums to fix the steel beam 11, effectively preventing its planar displacement. The grooves on the positioning blocks fit the steel beam 11, further improving positioning accuracy and ensuring the steel beam 11 is precisely embedded, like a mortise and tenon joint, ensuring its accurate position on the welding platform 2, laying a reliable foundation for the precise construction of the main structure of the front support frame 1. Simultaneously, the vertically fixed positioning blocks provide vertical support for the steel beam 11, and the grooves enhance this effect, preventing the steel beam 11 from sinking or floating vertically, ensuring the correct height and position of the steel beam 11, and contributing to the achievement of overall structural and dimensional accuracy.

[0038] Secondly, the weight of the steel beam 11 and the welding force can be distributed by multiple positioning blocks. Each positioning block shares the load, making the structure more stable and preventing damage to a single positioning block due to excessive pressure. This enhances the stability of the front support frame 1 during welding. Furthermore, the positioning blocks provide support from multiple positions, and the grooves are tightly fitted to the steel beam 11. When faced with deformation factors such as welding thermal stress, the deformation of the steel beam 11 can be effectively limited. If the steel beam 11 tends to bend due to thermal stress, the grooves can restrict it from different positions, maintaining straightness, ensuring the strength and stability of the main structure, and improving the quality and service life of the front support frame 1.

[0039] The auxiliary accessory positioning assembly 6 includes multiple mounting positioning plates that are vertically fixed on the welding platform 2, and the shape and size of each mounting positioning plate are adapted to the corresponding auxiliary accessory 14.

[0040] This design, firstly, uses a vertically fixed mounting and positioning plate that is compatible with the corresponding auxiliary component 14 to provide a dedicated "seat" for each auxiliary component 14, ensuring its precise position on the welding platform 2 and avoiding positional deviations, thus laying the foundation for precise welding. At the same time, it significantly improves the collaborative positioning accuracy of multiple components, assists in the precise construction of the front support frame 1 integral structure, and improves assembly.

[0041] Secondly, the installation positioning plate provides clear guidance for the installation of auxiliary accessories 14. Operators only need to match and install them without spending time adjusting and aligning. This can speed up the installation process and reduce assembly time during mass production. Furthermore, the one-to-one matching relationship reduces the error rate, avoids rework, and further improves work efficiency.

[0042] Furthermore, the vertically fixed mounting plate provides stable support for the auxiliary accessory 14, withstands welding forces, prevents displacement and deformation, ensures the structural stability of the front support frame 1, and the precise positioning and stable support enhance the overall resistance to deformation, enabling the front support frame 1 to maintain the relative position stability of the components in complex environments, thereby improving quality and service life.

[0043] The steel beam clamping assembly 7 includes a plurality of first telescopic cylinders 71 vertically fixedly installed on the top of the welding platform 2, and the plurality of first telescopic cylinders 71 are respectively distributed on one side of the corresponding steel beam 11.

[0044] The first telescopic cylinder 71 has a horizontally arranged first pressure plate 72 fixedly installed at its telescopic end, and the bottom of the first pressure plate 72 is arranged opposite to the top of the steel beam 11.

[0045] This design, firstly, when the first telescopic cylinder 71 drives the first pressure plate 72 to press the top of the steel beam 11, applies pressure from the vertical direction, preventing the steel beam 11 from jumping in the vertical direction, thereby accurately determining the position of the steel beam 11 on the welding platform 2, ensuring that the steel beam 11 remains stable during the welding process, providing a precise positioning basis for the welding work, thereby improving the welding quality, and further enhancing the connection strength between the steel beams 11, comprehensively improving the overall quality level of the front support frame 1.

[0046] Secondly, during the welding process, the steel beam 11 will generate thermal stress when heated, which can easily lead to bending, twisting and other deformations. At this time, the pressure applied by the pressure plate from the top of the steel beam 11 can effectively resist the deformation caused by thermal stress in the vertical direction, thereby ensuring that the shape accuracy of the steel beam 11 is maintained, greatly improving the welding quality and providing a solid guarantee for the structural stability of the front support frame 1 of the harvester.

[0047] Furthermore, for operators, controlling the extension and retraction of the first telescopic cylinder 71 to achieve the pressing and releasing of the first pressure plate 72 on the steel beam 11 is very intuitive and convenient. The entire process can be completed with simple operating instructions or button control. Moreover, the structure of the first telescopic cylinder 71 and the first pressure plate 72 is relatively simple, making it easy to inspect, repair and replace parts during daily maintenance.

[0048] In this embodiment, the first telescopic cylinder 71 is a single-rod double-acting cylinder (such as the SMCSC series or Airtac SC series). The cylinders are all commercially available products, and their installation method and telescopic drive principle are well known to those skilled in the art, so they will not be described in detail here.

[0049] The connecting seat clamping assembly 8 includes two second telescopic cylinders 81 symmetrically arranged on both sides of the limiting plate 41. The second telescopic cylinders 81 are horizontally fixedly installed on the top of the welding platform 2 via mounting seats.

[0050] The second telescopic cylinder 81 has a second pressure plate 82 hinged to its telescopic end, and the second pressure plate 82 is arranged opposite to the side of the connecting seat 12 of the front support frame 1.

[0051] This design, firstly, uses symmetrically arranged second telescopic cylinders 81 to apply uniform pressure from both sides, preventing horizontal displacement of the connecting seat 12 and ensuring its accurate positioning. This lays the foundation for precise welding and the assembly accuracy of the front support frame 1, thereby ensuring the uniformity of weld quality and enhancing connection strength. The stable pressing of the connecting seat 12 creates stable welding conditions, making it easier for welders to accurately control parameters, ensuring reliable weld appearance and internal quality. The uniform and high-quality weld enhances the connection strength between the steel beam 11 and the connecting seat 12, improves the overall structural strength of the front support frame 1, ensures its ability to withstand loads and stresses during operation, and enhances product reliability and service life.

[0052] Secondly, when the first telescopic cylinder 71 presses the top of the steel beam 11, the connecting seat pressing assembly 8 symmetrically presses the connecting seat 12, together forming a stable welded structure, ensuring that the positions of each component of the front support frame 1 are correct, improving the overall structural accuracy and stability, and can also simultaneously position and press the steel beam 11 and the connecting seat 12, reducing operation steps, and significantly improving assembly efficiency, especially in mass production.

[0053] Furthermore, thermal stress can easily cause deformation when welding the connecting seat 12. The connecting seat clamping assembly 8 applies pressure from both sides to limit the thermal expansion and contraction of the connecting seat 12. Together with the steel beam clamping assembly 7, it fixes the steel beam 11, ensuring the shape accuracy and welding quality of the front support frame 1, better resisting overall deformation, and ensuring that the dimensional accuracy after welding meets the requirements, thereby improving product quality and reliability.

[0054] In this embodiment, the second telescopic cylinder 81 is a single-rod double-acting cylinder with rod end spherical bearing (such as SMCCDQ2 series or Airtac SCS series). The cylinders are all commercially available products, and their installation method and telescopic drive principle are well known to those skilled in the art, so they will not be described in detail here.

[0055] For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods without departing from the principles and spirit of this utility model, based on the teachings of this utility model, still fall within the protection scope of this utility model.

Claims

1. An auxiliary welding fixture for a front support frame of a harvester, comprising a welding platform (2), characterized in that: The welding platform (2) is provided with an initial positioning component (3) that cooperates with the positioning hole (13) on the front support frame (1) to establish the reference position and support the front support frame (1). The welding platform (2) is provided with a connecting seat positioning component (4) for positioning and fixing the connecting seat (12) on the front support frame (1). The welding platform (2) is provided with a steel beam positioning component (5) for supporting and positioning multiple steel beams (11) in different directions of the front support frame (1) located below the front support frame (1). The welding platform (2) is also provided with multiple auxiliary accessory positioning components (6) for positioning the auxiliary accessories (14) set on the front support frame (1). The welding platform (2) is also provided with a steel beam clamping component (7) for clamping the steel beams (11) of the front support frame (1) and a connecting seat clamping component (8) for clamping the connecting seat (12) of the front support frame (1).

2. The auxiliary welding fixture for the front support frame of a harvester according to claim 1, characterized in that: The initial positioning component (3) includes a positioning cylinder fixedly installed on the welding platform (2). The diameter of the telescopic rod of the positioning cylinder is adapted to the inner diameter of the positioning hole (13), and the cylinder body diameter of the positioning cylinder is larger than the inner diameter of the positioning hole (13).

3. The auxiliary welding fixture for the front support frame of a harvester according to claim 2, characterized in that: The connecting seat positioning assembly (4) includes a limiting plate (41) fixedly installed on the welding platform (2). Limiting holes (42) are provided on the four corners of the limiting plate (41), and the limiting holes (42) correspond one-to-one with the four holes provided on the connecting seat (12) of the front support frame (1).

4. The auxiliary welding fixture for the front support frame of a harvester according to claim 3, characterized in that: The limiting plate (41) is connected to the connecting seat (12) of the front support frame (1) by inserting the positioning pin (43) into the limiting hole (42) and the corresponding hole on the connecting seat (12) of the front support frame (1).

5. The auxiliary welding fixture for the front support frame of a harvester according to claim 4, characterized in that: The steel beam positioning assembly (5) includes multiple positioning blocks that are vertically fixed on the welding platform (2). At least two positioning blocks are provided at the bottom of each steel beam (11), and each positioning block has a groove that matches the cross-sectional shape of the corresponding steel beam (11).

6. The auxiliary welding fixture for the front support frame of a harvester according to claim 5, characterized in that: The auxiliary accessory positioning assembly (6) includes multiple mounting positioning plates that are vertically fixed on the welding platform (2), and the shape and size of each mounting positioning plate are adapted to the corresponding auxiliary accessory (14).

7. The auxiliary welding fixture for the front support frame of a harvester according to claim 6, characterized in that: The steel beam clamping assembly (7) includes a plurality of first telescopic cylinders (71) that are vertically fixedly installed on the top of the welding platform (2), and the plurality of first telescopic cylinders (71) are respectively distributed on one side of the corresponding steel beam (11).

8. The auxiliary welding fixture for the front support frame of a harvester according to claim 7, characterized in that: The telescopic end of the first telescopic cylinder (71) is fixedly installed with a first pressure plate (72) that is set horizontally, and the bottom of the first pressure plate (72) is set opposite to the top of the steel beam (11).

9. The auxiliary welding fixture for the front support frame of a harvester according to claim 8, characterized in that: The connecting seat clamping assembly (8) includes two second telescopic cylinders (81) symmetrically arranged on both sides of the limiting plate (41). The second telescopic cylinders (81) are horizontally fixed on the top of the welding platform (2) by the mounting seat.

10. The auxiliary welding fixture for the front support frame of a harvester according to claim 9, characterized in that: The second telescopic cylinder (81) has a second pressure plate (82) hinged to its telescopic end, and the second pressure plate (82) is arranged opposite to the side of the connecting seat (12) of the front support frame (1).

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