A positioning tool for airport tractor towing device support tailor welding

Abstract

The application relates to the technical field of airport traction equipment, in particular to a positioning tool for tailor-welding of a support bracket of a towing device of an airport tractor, which comprises a base welding component, two round pipe welding components and a positioning round pipe, the two round pipe welding components are oppositely arranged on the top of the base welding component, the tail part of a support bracket to be welded is abutted against the upper surface of the base welding component, the positioning round pipe penetrates through the connecting pipe of the support bracket to be welded and is fixed between the two round pipe welding components, the base welding component and the oppositely arranged round pipe welding components form a stable support structure, the positioning round pipe is connected and locked to fix the support bracket to be welded and simultaneously constrain welding deformation, size deviation caused by manual operation is reduced, and the application has the characteristics of improving product quality.

Description

Technical Field

[0001] This application relates to the field of airport traction equipment technology, and in particular to a positioning tooling for welding the bracket of the traction device of an airport tractor. Background Technology

[0002] The airport towing vehicle towing device bracket consists of a bracket body and connecting pipes. It is mainly assembled and welded by hand. Due to the lack of positioning tools, the differences in operation between workers lead to large deviations in the dimensions of the welded bracket. This not only increases the difficulty of subsequent inspection, but also affects the assembly accuracy and performance.

[0003] In related technologies, the industry currently uses two methods to address this type of problem: one is to add a manual inspection step to measure and adjust the dimensions of each welded product; the other is to use simple fixtures to assist in positioning. However, these fixtures are mostly temporary and have poor versatility and limited positioning accuracy.

[0004] The existing airport towing device brackets have the following problems: inconsistent product quality, low efficiency of manual inspection and inability to fundamentally solve the problem of dimensional fluctuations. Although simple fixtures can partially improve consistency, they are limited by their simple structure and cannot cover all key dimensional control points. As the aviation industry increases its requirements for the reliability of towing devices, traditional manual welding methods can no longer meet the production needs of high precision and high efficiency. Utility Model Content

[0005] To improve product quality, this application provides a positioning fixture for welding the bracket of the traction device of an airport tractor.

[0006] The positioning fixture for welding the towing device bracket of an airport tractor provided in this application adopts the following technical solution: A positioning fixture for welding brackets of airport tractor units includes a base welding component, two round tube welding components, and a positioning round tube. The two round tube welding components are arranged opposite each other on the top of the base welding component. The tail of the bracket body of the bracket to be welded abuts against the upper surface of the base welding component. The positioning round tube passes through the connecting tube of the bracket to be welded and fixes it between the two round tube welding components.

[0007] By adopting the above technical solution, the base welding component and the oppositely arranged circular tube welding component form a stable support structure. In conjunction with the positioning circular tube connection and locking of the bracket to be welded, welding deformation is constrained, dimensional deviations caused by manual operation are reduced, and product quality is improved.

[0008] Preferably, the base welding component is formed by welding a bearing upper plate and a supporting base frame, and the supporting base frame is a hollow structure with rounded internal corners.

[0009] By adopting the above technical solution, the upper load-bearing plate and the supporting base are welded together to form a rigid frame. The hollow structure design reduces weight and disperses stress concentration by rounding the internal corners, thereby improving the overall bending and torsional resistance.

[0010] Preferably, the supporting base frame and the bearing upper plate are of equal length, and the width of the supporting base frame is smaller than the width of the bearing upper plate.

[0011] By adopting the above technical solution, the load distribution area of ​​the upper plate is expanded, making the bending moment distribution more uniform and reducing the peak stress concentration.

[0012] Preferably, the circular tube welded component has a vertical plate-like structure and extends along the length direction of the supporting upper plate.

[0013] By adopting the above technical solution, welding stress is effectively dispersed, overall bending stiffness is improved, and the risk of welding deformation is reduced. Preferably, the bottom of the circular tube welded component is widened.

[0014] By adopting the above technical solution, the installation area of ​​the circular tube welded component and the load-bearing upper plate is increased, the stress distribution is made more uniform, and the support capacity and dynamic load capacity are further improved.

[0015] Preferably, the base welding component has matching mounting grooves on the left and right sides of one end of the upper bearing plate, corresponding to the two round tube welding components.

[0016] By adopting the above technical solutions, the time spent on manual adjustments is reduced, and assembly efficiency is improved.

[0017] Preferably, the two circular tube welded components are fixed with bolts after being fitted with the mounting groove keyway, and the distance between the two circular tube welded components is greater than the total length of the connecting pipe of the bracket to be welded.

[0018] By adopting the above technical solutions, the assembly difficulty and the risk of misalignment during bracket welding are reduced.

[0019] Preferably, after the round tube welding component is fixed, a positioning hole that matches the size of the connecting tube of different supports to be welded can be opened.

[0020] By adopting the above technical solutions and using them in conjunction with detachable round tube welded components, compatibility and flexibility are improved.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. The base welding component and the opposite round tube welding component form a stable support structure. Together with the positioning round tube, they connect and lock the bracket to be welded, while restraining welding deformation, reducing dimensional deviations caused by manual operation, and improving product quality. 2. Improved the dynamic load capacity and support performance of the device; 3. Improved the compatibility and flexibility of the device. Attached Figure Description

[0022] Figure 1 This is a front view of an embodiment of this application.

[0023] Figure 2 This is a top view of an embodiment of this application.

[0024] Figure 3 This is a schematic diagram illustrating a usage scenario of an embodiment of this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Base welded component; 11. Bearing upper plate; 111. Mounting groove; 12. Support base frame; 121. Rounded treatment; 2. Round tube welded component; 21. Positioning hole; 3. Positioning round tube; 4. Bolt. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0027] This application discloses a positioning fixture for welding the bracket of an airport tractor unit. (Refer to...) Figure 1-3 A positioning fixture for welding the bracket of the traction device of an airport tractor includes a base welding component 1, two round tube welding components 2 and a positioning round tube 3. The two round tube welding components 2 are placed opposite each other and fixed to the top of the base welding component 1. The tail of the bracket body of the bracket to be welded abuts against the upper surface of the base welding component 1. The positioning round tube 3 passes through the connecting tube of the bracket to be welded and fixes it between the two round tube welding components 2.

[0028] Therefore, the base welding component 1 and the oppositely arranged circular tube welding component 2 form a stable support structure. With the insertion and engagement of the positioning circular tube 3 and the connecting tube on the bracket to be welded, quick positioning and locking are achieved, ensuring the consistency of the product welding reference surface and reducing the offset during the welding process.

[0029] In summary, this device mechanically limits welding deformation, while improving positioning accuracy and operational efficiency, reducing dimensional deviations caused by manual operation, and effectively improving product quality.

[0030] Specifically, the base welding component 1 is formed by welding together a bearing upper plate 11 and a support base frame 12. The support base frame 12 and the bearing upper plate 11 are of equal length. The width of the support base frame 12 is less than the width of the bearing upper plate 11. The support base frame 12 is hollow and the internal corners are rounded 121.

[0031] Therefore, the welded combination of the upper load-bearing plate 11 and the supporting base frame 12 forms a rigid frame, ensuring the flatness and bending stiffness during welding. The wide design of the upper load-bearing plate 11 expands the load distribution area and effectively disperses the welding stress. At the same time, the hollow structure of the supporting base frame 12 makes the bending moment distribution more uniform, improves the local load-bearing capacity, and reduces the risk of deformation under stress.

[0032] Furthermore, the hollow structure design of the supporting base frame 12 reduces the structural weight and material redundancy, while eliminating stress concentration at sharp corners through the rounding treatment 121 of the internal included corners. It also facilitates the operation of the welding gun head, reduces the incomplete fusion defects of right-angle welds, and makes the welded joints form a continuous transition surface, thereby improving the bonding strength.

[0033] On the other hand, the circular tube welded component 2 has a vertical plate structure, which is vertically supported on the top of the bearing plate 11. Through the extension layout in the length direction, a continuous force path is formed, which transforms the concentrated load into uniform stress, improves the overall bending stiffness, and reduces the risk of welding deformation. At the same time, the widening treatment at the bottom of the circular tube welded component 2 increases the installation area with the bearing plate 11, further optimizes the load distribution, effectively reduces the pressure peak, improves the support capacity and dynamic load capacity, and suppresses resonance through structural changes, thus extending the fatigue life of the equipment under vibration conditions.

[0034] Meanwhile, the base welding component 1 has matching mounting grooves 111 on the left and right sides of one end of the upper plate 11 corresponding to the two round tube welding components 2. This ensures that the round tube welding components 2 can be quickly positioned before operation, reducing manual adjustment time and improving assembly efficiency. At the same time, by reserving the groove spacing, the distance between the two round tube welding components 2 after installation is greater than the total length of the connecting pipe of the bracket to be welded, thereby reducing the difficulty of bracket positioning and facilitating the insertion of the positioning round tube 3 and the connection of the bracket body to the round tube welding component 2 through the connecting pipe.

[0035] Furthermore, after the round tube welded component 2 is embedded into the bearing upper plate 11 through the mounting groove 111, its left and right ends are respectively reinforced by bolts 4 to form rigid constraints, reducing the radial displacement of the round tube welded component 2 in the mounting groove 111, thereby reducing the risk of misalignment caused by vibration or thermal deformation during welding. Through the axial limiting effect of the keyway fit, the welding stress is evenly transferred to the bearing upper plate 11, reducing local stress concentration. Moreover, the bolt 4 connection method facilitates the disassembly and replacement of the round tube welded component 2, while the keyway design allows for repeated positioning, reducing secondary assembly errors and improving maintenance efficiency.

[0036] In the process described above, after the round tube welding component 2 is fixed, it can be adjusted according to the actual size of the connecting pipe of different brackets to be welded and the corresponding positioning hole 21 can be opened. Without replacing the bottom welding component, it can be compatible with traction device brackets with different connecting pipe diameters. The detachable round tube welding component 2 effectively improves versatility and flexibility and improves assembly efficiency.

[0037] The implementation principle of a positioning fixture for welding the bracket of an airport tractor unit according to an embodiment of this application is as follows: the base welding component 1 and the oppositely arranged circular tube welding component 2 form a stable support structure. The operator achieves a fixed connection between the product and the circular tube welding component 2 by passing the positioning circular tube 3 through the connecting tube of the bracket to be welded, thereby completing rapid positioning and locking. At the same time, the tail of the bracket body of the bracket to be welded is abutted against the surface of the bearing plate 11, ensuring the consistency of the product welding reference surface. This device reduces the offset during the welding process through mechanical limiting, while constraining welding deformation, improving positioning accuracy and operating efficiency, reducing dimensional deviations caused by manual operation, and effectively improving product quality.

[0038] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A positioning fixture for welding the bracket of an airport tractor unit, characterized in that, It includes a base welding component (1), two round tube welding components (2) and a positioning round tube (3). The two round tube welding components (2) are arranged opposite to each other on the top of the base welding component (1). The tail of the bracket body of the bracket to be welded abuts against the upper surface of the base welding component (1). The positioning round tube (3) passes through the connecting tube of the bracket to be welded and fixes it between the two round tube welding components (2).

2. The positioning fixture for welding the bracket of the traction device of an airport tractor as described in claim 1, characterized in that, The base welding component (1) is formed by welding together a bearing upper plate (11) and a support base frame (12). The support base frame (12) is hollow and the included corners are rounded (121).

3. The positioning fixture for welding the bracket of the traction device of an airport tractor as described in claim 2, characterized in that, The supporting base frame (12) and the bearing upper plate (11) are of the same length, and the width of the supporting base frame (12) is smaller than the width of the bearing upper plate (11).

4. The positioning fixture for welding the bracket of the traction device of an airport tractor as described in claim 1, characterized in that, The circular tube welded component (2) has a vertical plate structure and extends along the length direction of the bearing upper plate (11).

5. The positioning fixture for welding the bracket of the traction device of an airport tractor as described in claim 4, wherein the bottom of the round tube welding component (2) is widened.

6. A positioning fixture for welding the bracket of an airport tractor unit according to claim 5, characterized in that, The base welding component (1) has a matching mounting groove (111) on the left and right sides of one end of the bearing plate (11) corresponding to the two round tube welding components (2).

7. A positioning fixture for welding the bracket of an airport tractor unit according to claim 6, characterized in that, After the two circular tube welding components (2) are engaged with the keyway of the mounting groove (111), they are fixed by bolts (4), and the distance between the two circular tube welding components (2) is greater than the total length of the connecting pipe of the bracket to be welded.

8. A positioning fixture for welding the bracket of an airport tractor unit according to claim 7, characterized in that, After the circular tube welding component (2) is fixed, a positioning hole (21) can be opened according to the size of the connecting pipe of different supports to be welded.

Images