Metal frame arc straight edge welding connection structure
By using an insert plate and supporting screw structure, the problem of unstable position during the welding of the arc-shaped metal frame and the straight-edge metal frame was solved, which improved the welding accuracy and fatigue resistance, reduced the labor intensity of operators, and ensured the dimensional accuracy and service life of the metal frame.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING YANRUO ELECTRIC CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-08-04
AI Technical Summary
In traditional welding processes, the positions of the arc-shaped metal frame and the straight-edge metal frame are unstable, resulting in low welding accuracy, high labor intensity for operators, and problems such as cracks, deformation, and inaccurate dimensions after welding.
The structure employs an insertion plate and supporting screws. Through the cooperation of the insertion rod and supporting screws, the arc-shaped metal frame and the straight-edge metal frame are initially positioned and fixed, increasing the contact area between the weld and the base material, dispersing welding stress, and reducing stress concentration.
Improving welding precision reduces the labor intensity of operators, enhances the fatigue resistance of welded joints, reduces the risk of deformation and cracking after welding, and ensures the overall dimensional accuracy and service life of the metal frame.
Smart Images

Figure CN224587283U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welding connection technology, specifically a metal frame arc straight edge welding connection structure. Background Technology
[0002] In the field of metal frame processing, welding connections between curved and straight-edged metal frames is a common process. Traditionally, operators need to manually support the curved and straight-edged metal frames to ensure they are aligned before welding. Manual support makes it difficult to guarantee the stability of their positions, and slight shaking during welding can easily lead to misalignment, affecting welding accuracy. Furthermore, prolonged support significantly increases the operator's workload, especially for larger metal frames, further reducing operational safety and convenience. The joints between traditional straight-edged and curved metal frames are often right angles or simple planes, resulting in a small contact area between the weld and the base material. After welding, stress concentration can easily lead to cracks and deformation. If there are gaps at the joint, the shrinkage after welding will increase, affecting not only the overall dimensional accuracy of the metal frame but also reducing the fatigue resistance of the welded joint and shortening the service life of the metal frame. Summary of the Invention
[0003] This utility model provides a metal frame arc-shaped straight-edge welding connection structure, which can effectively solve the problems mentioned in the background art, such as the difficulty in ensuring the stability of the position of the two parts by manual support, the easy deviation of the joint due to slight shaking during the welding process, affecting the welding accuracy, and the fact that supporting the metal frame for a long time will greatly increase the labor intensity of the operator, especially for larger metal frames, further reducing the safety and convenience of operation. The joint of traditional straight-edge metal frames and arc-shaped metal frames is mostly right angle or simple plane design, with a small contact area between the weld and the base material. After welding, it is easy to crack and deform due to stress concentration. If there is a splicing gap during the joint, it will lead to an increase in the shrinkage after welding, which will not only affect the overall dimensional accuracy of the metal frame, but also reduce the fatigue resistance of the welded joint and shorten the service life of the metal frame.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a metal frame arc straight edge welding connection structure, comprising a straight edge metal frame and an arc metal frame, wherein the straight edge metal frame and the arc metal frame are welded together by splicing, and the end of the arc metal frame is provided with a first insertion plate and a second insertion plate, wherein the first insertion plate and the second insertion plate can be moved into the interior of the straight edge metal frame; An insertion rod is inserted into one end of the straight-edged metal frame, and a support screw is threadedly connected inside the insertion rod. A support frame is rotatably connected to the top of the support screw. A support plate is welded to one end of the straight-edged metal frame, and a fixing plate is welded to the bottom of the arc-shaped metal frame. The straight-edged metal frame has an insertion groove at the position corresponding to the insertion rod, and the outer diameter of the insertion rod is in contact with the inner wall of the insertion groove. The fixing plate is slidably connected to the inside of the support plate, and the straight-edge metal frame has corresponding slots at the positions of the first insertion plate and the second insertion plate.
[0005] A metal frame arc-shaped straight edge welding connection structure, preferably, the straight edge metal frame has an arc groove at its end.
[0006] A metal frame arc-shaped straight-edge welded connection structure, preferably, has a first insertion plate welded to the top of the arc-shaped metal frame and a second insertion plate welded to the side of the arc-shaped metal frame.
[0007] A metal frame arc-shaped straight-edge welded connection structure, preferably, the longitudinal section of the support frame is U-shaped, and the inner wall of the support frame is in contact with the outer side of the arc-shaped metal frame.
[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: The structure of this utility model is scientific and reasonable, and it is safe and convenient to use: By moving the insertion rod to adjust the support position, the height of the support frame can be precisely adjusted by rotating the support screw, which can stably support the arc metal frame. At the same time, the fixing plate of the arc metal frame can slide into the support plate of the straight edge metal frame. The first insertion plate and the second insertion plate can be embedded into the corresponding slots of the straight edge metal frame, realizing the initial positioning of the arc metal frame and the straight edge metal frame. No manual support is required from the operator. Before welding, the support frame can be pushed by the support screw to squeeze the arc metal frame, further strengthening the fixing effect, completely solving the drawbacks of manual support, greatly reducing the labor intensity of the operator, and ensuring the stability of the position of both during the welding process, thus improving the welding accuracy. The straight-edge metal frame has an arc groove at the end. This design can significantly increase the contact area between the weld and the base material, effectively disperse welding stress, reduce stress concentration, reduce the risk of cracks and deformation after welding, greatly improve the mechanical properties and fatigue resistance of the welded joint, and extend the overall service life of the metal frame. With the cooperation of the fixing plate, the insertion plate and the corresponding groove, as well as the compression and fixing of the support frame, the splicing gap between the arc metal frame and the straight-edge metal frame can be minimized, so that the two fit tightly together. The shrinkage after welding is precisely controlled, ensuring the overall dimensional accuracy of the metal frame and avoiding quality problems caused by gaps. The first and second insertion plates, along with their corresponding slots, act as guides, enabling precise alignment of the arc-shaped metal frame with the straight-edged metal frame. The arc-shaped slots also prevent interference from sharp corners, reducing assembly resistance and making welding operations smoother and shortening assembly time. Due to the small gaps between the joints, the height of the weld scars after welding is significantly reduced, eliminating the need for extensive grinding and reducing subsequent processing steps. This greatly improves overall production efficiency and lowers processing costs. Attached Figure Description
[0009] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.
[0010] In the attached diagram: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the support screw installation structure of this utility model; Figure 3 This is a schematic diagram of the second insertion plate installation structure of this utility model; Figure 4 This is a schematic diagram of the first insertion plate installation structure of this utility model; The following are the labels in the diagram: 1. Straight-edged metal frame; 2. Arc-shaped metal frame; 3. Insert rod; 4. Support screw; 5. Support frame; 6. Support plate; 7. Fixing plate; 8. First insertion plate; 9. Second insertion plate; 10. Arc groove. Detailed Implementation
[0011] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0012] Example: Figure 1-4 As shown, this utility model provides a technical solution: a metal frame arc-shaped straight edge welding connection structure, including a straight edge metal frame 1 and an arc-shaped metal frame 2. An insertion rod 3 is inserted into one end of the straight edge metal frame 1. A support screw 4 is threadedly connected inside the insertion rod 3. A support frame 5 is rotatably connected to the top of the support screw 4. A support plate 6 is welded to one end of the straight edge metal frame 1. A fixing plate 7 is welded to the bottom of the arc-shaped metal frame 2. A first insertion plate 8 is welded to the top of the arc-shaped metal frame 2. A second insertion plate 9 is welded to the side of the arc-shaped metal frame 2. An arc groove 10 is opened at the end of the straight edge metal frame 1.
[0013] The straight-edged metal frame 1 has an insertion groove at the position corresponding to the insertion rod 3. The outer diameter of the insertion rod 3 is in contact with the inner wall of the insertion groove. After the insertion rod 3 is moved into the insertion groove, the stability of the insertion rod 3 is ensured.
[0014] The longitudinal section of the support frame 5 is U-shaped. The inner wall of the support frame 5 is in contact with the outer side of the arc metal frame 2, which can support the arc metal frame 2 and ensure the stability of the welding of the arc metal frame 2.
[0015] The fixing plate 7 is slidably connected to the inside of the support plate 6. The straight-edge metal frame 1 has corresponding grooves at the positions of the first insertion plate 8 and the second insertion plate 9, which facilitates the support and positioning of the arc-shaped metal frame 2, and thus facilitates the welding of the arc-shaped metal frame 2.
[0016] The operator moves the insertion rod 3 into the straight-edged metal frame 1. Then, the operator rotates the support screw 4, which is threaded onto the insertion rod 3. Rotating the support screw 4 allows it to move, moving the support frame 5 to the designated position. The operator then places the arc-shaped metal frame 2 on top of the support frame 5. Next, the operator moves the arc-shaped metal frame 2, moving the fixing plate 7 to the top of the support plate 6, and moving the first insertion plate 8 and the second insertion plate 9 into their corresponding slots, thus initially fixing the arc-shaped metal frame 2 and ensuring that the end face of the arc-shaped metal frame 2 contacts the end face of the straight-edged metal frame 1. The operator then manually supports the arc-shaped metal frame 2 and rotates the support screw 4 again, causing the support frame 5 to press against the arc-shaped metal frame 2, thus... The arc-shaped metal frame 2 is fixed in place, and then the straight-edge metal frame 1 and the arc-shaped metal frame 2 are welded together. During the welding process, the stability of the arc-shaped metal frame 2 is ensured, which facilitates the welding of the straight-edge metal frame 1 and the arc-shaped metal frame 2 without the need for personnel support, thus reducing the labor intensity of the personnel. During the welding process, the arc groove 10 can increase the contact area between the weld and the base material, reduce stress concentration, thereby improving the mechanical properties and fatigue resistance of the welded joint. It can reduce assembly resistance, making the welding operation smoother, and at the same time reducing the risk of interference caused by sharp corners. Furthermore, through the above-mentioned splicing support method, the splicing gap can be reduced, and the two parts are close together. The shrinkage after welding is reduced, the size is controlled, and the height of the weld is also reduced, reducing the amount of grinding work.
[0017] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A metal frame arc-shaped straight-edge welded connection structure, comprising a straight-edge metal frame (1) and an arc-shaped metal frame (2), characterized in that: The straight-edge metal frame (1) and the arc-shaped metal frame (2) are welded together. The arc-shaped metal frame (2) is provided with a first insertion plate (8) and a second insertion plate (9) at its end. The first insertion plate (8) and the second insertion plate (9) can be moved into the straight-edge metal frame (1). One end of the straight-edged metal frame (1) is inserted with an insertion rod (3), and the insertion rod (3) is connected to a support screw (4) by a thread. The top of the support screw (4) is rotatably connected to a support frame (5). The straight-edged metal frame (1) has a support plate (6) welded to one end, and the arc-shaped metal frame (2) has a fixing plate (7) welded to the bottom. The straight-edged metal frame (1) has an insertion groove at the position corresponding to the insertion rod (3), and the outer diameter of the insertion rod (3) is in contact with the inner wall of the insertion groove; The fixing plate (7) is slidably connected to the inside of the support plate (6), and the straight-edge metal frame (1) has corresponding slots at the positions of the first insertion plate (8) and the second insertion plate (9).
2. The metal frame arc straight edge welded connection structure according to claim 1, characterized in that, The straight-edged metal frame (1) has an arc groove (10) at its end.
3. The metal frame arc straight edge welded connection structure according to claim 1, characterized in that, The top of the arc-shaped metal frame (2) is welded with a first insertion plate (8), and the side of the arc-shaped metal frame (2) is welded with a second insertion plate (9).
4. The metal frame arc straight edge welded connection structure according to claim 1, characterized in that, The longitudinal section of the support frame (5) is U-shaped, and the inner wall of the support frame (5) is in contact with the outer side of the arc metal frame (2).