I-shaped steel profile welding device for bridge construction

Abstract

The invention relates to the technical field of welding, in particular to an I-shaped steel profile welding device for bridge construction, which comprises a circular welding guide ring arranged on a guide mechanism, a welding driving mechanism is slidably arranged on the circular welding guide ring, the welding driving mechanism comprises a limiting ring and a driving motor, and a welding gun is connected to the limiting ring; a protective supporting arm is arranged on the guide mechanism, and a clamping driving mechanism is arranged in the protective supporting arm. Gear and gear ring meshing transmission is adopted, a driving motor is matched with driven teeth through a driving gear, the welding driving mechanism precisely slides along the circular welding guide ring, it is guaranteed that the welding track is precise, sliding stability is guaranteed through a limiting ring, the welding quality is improved, and the clamping driving mechanism on the protective supporting arm can flexibly adapt to H-shaped steel profiles of different sizes; and due to the overall design, the welding operation is more convenient and flexible, and the welding effect and the production benefit are effectively improved.

Description

Technical Field

[0001] This invention relates to a welding apparatus, and more particularly to a welding apparatus for I-beam profiles used in bridge construction, belonging to the field of welding technology. Background Technology

[0002] In the industrial manufacturing sector, especially in welding operations involving large bridge structural components, welding quality and efficiency are of paramount importance. Traditional welding methods often rely on manual operation, which has many drawbacks. Manual welding makes it difficult to guarantee the accuracy and consistency of the welding trajectory, which can easily lead to welding defects and affect the strength and sealing of structural components. At the same time, manual welding is slow, making it difficult to meet the production schedule and quality requirements for large-scale production or welding tasks with high precision requirements.

[0003] With the development of automation technology, the guiding mechanism of some equipment is not stable enough, and it is easy to shake or deviate during the welding process, which affects the welding accuracy. In addition, the clamping mechanism of some equipment cannot adapt well to I-beam profiles of different sizes, and has poor versatility.

[0004] Therefore, it is urgent to improve the welding equipment for I-beam profiles to solve the aforementioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a welding device for I-beam profiles used in bridge construction. It employs a gear-ring meshing transmission, with a drive motor engaging the driven gear and the driven gear to allow the welding drive mechanism to slide precisely along a circular welding guide ring, ensuring accurate welding trajectory. A limit ring ensures stable sliding, improving welding quality. The clamping drive mechanism on the protective support arm can flexibly adapt to I-beam profiles of different sizes, enhancing the device's versatility. The overall design makes welding operations more convenient and flexible, effectively improving welding results and production efficiency.

[0006] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0007] A welding device for I-beam profiles used in bridge construction includes a circular welding guide ring fixedly mounted on a guide mechanism. A welding drive mechanism is slidably mounted on the circular welding guide ring. The welding drive mechanism includes a limit ring and a drive motor. A central processing unit is electrically connected to the drive motor. The limit ring abuts against the outer surface of the circular welding guide ring and is slidably connected to the circular welding guide ring. A welding torch is connected to the limit ring.

[0008] The output end of the drive motor is provided with a drive gear, and the circular welding guide ring is provided with a driven tooth. The drive gear meshes with the driven tooth, wherein after the drive motor is started, the drive gear drives the welding drive mechanism to slide on the circular welding guide ring.

[0009] The guide mechanism is provided with symmetrically distributed protective support arms. The interior of the protective support arm is provided with an I-beam profile. The inner side of the protective support arm is provided with a clamping drive mechanism, which abuts against the side of the I-beam profile.

[0010] Preferably, the limiting ring is provided with a short limiting plate and a long limiting plate, the short limiting plate and the long limiting plate abut against the outer side of the circular welding guide ring, a limiting slider is fixedly provided inside the limiting ring, and a locking block guide groove is opened on the circular welding guide ring, the limiting slider is slidably disposed inside the locking block guide groove.

[0011] Preferably, a motor fixing plate is fixedly provided on the drive motor, and the motor fixing plate is fixedly connected to the limiting ring through a connecting plate.

[0012] Preferably, an L-shaped connecting rod is fixedly provided on the limiting ring, one end of the L-shaped connecting rod is fixedly connected to the limiting ring by bolts, and the other end of the L-shaped connecting rod is fixedly connected to a welding torch push telescopic rod.

[0013] Preferably, the welding torch extension rod is electrically connected to the central processing unit, and a U-shaped clamping block is provided at the output end of the welding torch extension rod, with the welding torch fixedly mounted on the U-shaped clamping block.

[0014] Preferably, a support connecting block is fixedly provided on the upper side of the guide mechanism, the support connecting block is fixedly connected to the lower side of the circular welded guide ring, and a vertical support plate is fixedly provided on the lower side of the guide mechanism.

[0015] Preferably, guide roller grooves are provided at both ends of the vertical support plate, and guide rollers are rotatably arranged inside the guide roller grooves. Neodymium magnets are fixedly arranged on the lower side of the vertical support plate.

[0016] Preferably, the clamping drive mechanism includes a drive wheel telescopic rod, the output end of which is provided with a drive wheel support arm, and a drive wheel is rotatably mounted inside the drive wheel support arm. The drive wheel abuts against the I-beam profile, and both the drive wheel telescopic rod and the drive wheel are electrically connected to the central processing unit.

[0017] Preferably, the inner side of the limiting ring is provided with a plurality of ball grooves, and balls are rolled inside the ball grooves, and the balls abut against the outer side of the circular welded guide ring.

[0018] Preferably, an infrared sensor is fixedly mounted on the U-shaped clamping block, and the infrared sensor is electrically connected to the central processing unit via a wire.

[0019] This invention has at least the following beneficial effects:

[0020] 1. The gear and ring gear transmission is adopted. With the help of the drive motor, the drive gear and the driven gear cooperate to allow the welding drive mechanism to slide precisely along the circular welding guide ring, ensuring accurate welding trajectory. The limit ring ensures stable sliding and improves welding quality. The clamping drive mechanism on the protective support arm can flexibly adapt to different sizes of I-beam profiles, enhancing the versatility of the device. The overall design makes welding operation more convenient and flexible, effectively improving welding effect and production efficiency.

[0021] 2. The circular welding guide ring is slidably positioned between the short limit plate and the long limit plate, while the limit slider slides within the guide groove of the clamping block. This double-limiting structure effectively restricts the movement direction of the limit ring, preventing it from shaking, shifting, or detaching from the guide ring during sliding. This ensures that the welding drive mechanism runs stably along a predetermined circular trajectory, thereby improving welding accuracy.

[0022] 3. The drive wheel telescopic rod can flexibly adjust the position of the drive wheel according to the actual size of the I-beam profile, so that the drive wheel always keeps in close contact with the I-beam profile. This feature allows the mechanism to adapt to a variety of I-beam profiles of different specifications, greatly enhancing the versatility and applicability of the device. The drive wheel abuts against the I-beam profile, providing clamping force while the rotating setting reduces frictional resistance between the drive wheel and the profile. During the welding process, it can not only ensure the fixed position of the I-beam profile and guarantee welding accuracy, but also facilitate fine-tuning of the profile position when needed. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0024] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0025] Figure 2 This is a structural diagram of the circular welding guide ring of the present invention;

[0026] Figure 3 This is a structural diagram of the welding drive mechanism of the present invention;

[0027] Figure 4 This is a diagram of the ball bearing structure of the present invention;

[0028] Figure 5 This is a structural diagram of the clamping drive mechanism of the present invention;

[0029] Figure 6 This is a structural diagram of the driven tooth of the present invention;

[0030] Figure 7This is a structural diagram of the welding torch propulsion telescopic rod of the present invention;

[0031] Figure 8 This is a side view of the present invention.

[0032] In the diagram: 1. Circular welding guide ring; 101. Clamping block guide groove; 102. Driven gear; 2. Guide mechanism; 201. Support connecting block; 202. Protective support arm; 3. Clamping drive mechanism; 301. Drive wheel telescopic rod; 302. Drive wheel; 303. Drive wheel support arm; 4. Vertical support plate; 401. Guide roller groove; 402. Guide roller; 403. Neodymium magnet; 5. Welding drive mechanism; 501. Limiting ring; 5011. Short limiting plate; 5012. Long limiting plate; 5013. Limiting slider; 5014. Ball groove; 502. Drive motor; 503. Drive gear; 504. Motor fixing plate; 505. Connecting plate; 506. Ball; 6. L-shaped connecting rod; 7. Welding torch push telescopic rod; 701. U-shaped clamping block; 702. Infrared sensor; 8. Welding torch; 9. I-beam profile. Detailed Implementation

[0033] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0034] like Figures 1-8As shown, the bridge construction H-beam profile welding device provided in this embodiment includes a circular welding guide ring 1 fixedly mounted on a guide mechanism 2. A welding drive mechanism 5 is slidably mounted on the circular welding guide ring 1. The welding drive mechanism 5 includes a limit ring 501 and a drive motor 502. A central processing unit is electrically connected to the drive motor 502, realizing automated control of the movement of the welding drive mechanism 5. The operator can preset welding parameters and paths through the central processing unit, and the device automatically completes the welding process, reducing manual intervention, improving production efficiency, and reducing the impact of human factors on welding quality. The limit ring 501 abuts against the outer surface of the circular welding guide ring 1 and is slidably connected to the circular welding guide ring 1, providing a stable guiding effect for the movement of the welding drive mechanism 5. It can prevent the welding drive mechanism 5 from shaking, tilting, or derailing during the sliding process, ensuring the stability of the welding torch 8 during the welding process, thereby improving the welding quality. The welding torch 8 is connected to the limit ring 501, and an L-shaped connecting rod 6 is fixedly mounted on the limit ring 501. One end of the L-shaped connecting rod 6 is fixed to the limit ring 501 by bolts. The L-shaped connecting rod 6 is fixedly connected to the other end of the welding torch 8 telescopic rod 7. The L-shaped connecting rod 6 forms a bridge between the limiting ring 501 and the welding torch 8 telescopic rod 7. Secured with bolts, it is not only stable but also easy to disassemble and adjust. The welding torch 8 telescopic rod 7 can extend and retract under the control of the central processing unit, precisely adjusting the radial position of the welding torch 8 to adapt to the welding needs of different specifications of welded parts and flexibly handle diverse welding scenarios. The welding torch 8 telescopic rod 7 is electrically connected to the central processing unit, and its output end is equipped with a U... The welding torch 8 is fixedly mounted on the U-shaped clamping block 701. The U-shaped clamping block 701 provides a reliable clamping and fixing method for the welding torch 8, which can effectively prevent the welding torch 8 from shaking or shifting during the welding process, ensuring the accuracy of the welding trajectory, thereby improving the welding quality and reducing the generation of welding defects. In addition, the welding drive mechanism 5 can slide flexibly on the circular welding guide ring 1, which makes it convenient to adjust the position and angle of the welding torch 8, so that it can better adapt to different welding positions and needs, simplify the welding operation process, and improve the flexibility and convenience of welding.

[0035] The output end of the drive motor 502 is provided with a drive gear 503, and the circular welding guide ring 1 is provided with a driven gear 102. The drive gear 503 and the driven gear 102 are meshed and connected. After the drive motor 502 is started, the drive gear 503 drives the welding drive mechanism 5 to slide on the circular welding guide ring 1. By meshing the drive gear 503 at the output end of the drive motor 502 with the driven gear 102 on the circular welding guide ring 1, the rotational motion of the drive motor 502 is accurately converted into the sliding of the welding drive mechanism 5 along a circular trajectory. This transmission method can ensure the accuracy and stability of the motion, so that the welding torch 8 strictly follows the preset circular path for welding, effectively improving the welding range and accuracy, reducing welding deviation, and ensuring the consistency of welding quality.

[0036] The guide mechanism 2 is provided with symmetrically distributed protective support arms 202. The inside of the protective support arm 202 is provided with an I-beam profile 9. The inner side of the protective support arm 202 is provided with a clamping drive mechanism 3. The clamping drive mechanism 3 abuts against the side of the I-beam profile 9. The clamping drive mechanism 3 on the inner side of the protective support arm 202 on the guide mechanism 2 abuts against the side of the I-beam profile 9. The clamping force and position can be adjusted according to the I-beam profile 9 of different sizes. This design makes the welding device adaptable to welding tasks of I-beam profiles 9 of various specifications, increases the versatility and applicability of the device, and improves the utilization rate of the equipment.

[0037] Therefore, a gear and ring gear meshing transmission is adopted. With the help of the drive motor 502, the drive gear 503 and the driven gear 102 cooperate to allow the welding drive mechanism 5 to slide precisely along the circular welding guide ring 1, ensuring accurate welding trajectory. The limit ring 501 ensures stable sliding and improves welding quality. The clamping drive mechanism 3 on the protective support arm 202 can flexibly adapt to different sizes of I-beam profiles 9, enhancing the versatility of the device. The overall design makes welding operation more convenient and flexible, effectively improving welding effect and production efficiency.

[0038] Furthermore, such as Figure 3 and Figure 4 As shown, the limiting ring 501 is provided with a short limiting plate 5011 and a long limiting plate 5012. The short limiting plate 5011 and the long limiting plate 5012 abut against the outer side of the circular welding guide ring 1. A limiting slider 5013 is fixedly provided inside the limiting ring 501. A block guide groove 101 is opened on the circular welding guide ring 1. The limiting slider 5013 is slidably disposed inside the block guide groove 101. The circular welding guide ring 1 is slidably disposed between the short limiting plate 5011 and the long limiting plate 5012. At the same time, the limiting slider 5013 slides in the block guide groove 101. The double limiting structure effectively restricts the movement direction of the limiting ring 501, preventing it from shaking, deviating or falling off the guide ring during the sliding process, ensuring that the welding drive mechanism 5 runs stably along the predetermined circular trajectory, thereby improving the welding accuracy.

[0039] A motor mounting plate 504 is fixedly installed on the drive motor 502. The motor mounting plate 504 is fixedly connected to the limit ring 501 through the connecting plate 505, which provides reliable support for the drive motor 502, keeps the drive motor 502 stable during operation, reduces the impact of vibration of the drive motor 502 on welding accuracy, ensures that the drive gear 503 and the driven gear 102 always mesh well, and improves the overall reliability of the device.

[0040] Furthermore, such as Figure 4 As shown, a support connecting block 201 is fixedly installed on the upper side of the guide mechanism 2. The support connecting block 201 is fixedly connected to the lower side of the circular welding guide ring 1. A vertical support plate 4 is fixedly installed on the lower side of the guide mechanism 2, forming a stable overall structure. This provides a solid foundation for the sliding of the welding drive mechanism 5 on the circular welding guide ring 1, ensuring the positional accuracy of each component during the welding process and reducing welding errors caused by structural loosening.

[0041] Both ends of the vertical support plate 4 are provided with guide roller grooves 401, and guide rollers 402 are rotatably arranged inside the guide roller grooves 401. Neodymium magnets 403 are fixedly arranged on the lower side of the vertical support plate 4. The guide rollers 402 rotating inside the guide roller grooves 401 at both ends of the vertical support plate 4 change the sliding friction to rolling friction when the device moves on the support such as the I-beam profile 9, which greatly reduces the moving resistance. The operator can easily move the device to the designated welding position and improve work efficiency.

[0042] The neodymium magnet 403 on the lower side of the vertical support plate 4 has strong magnetism, which can firmly attract the device to the metal support, prevent the device from shifting due to vibration or external force during the welding process, ensure the accuracy of the welding position, and improve the welding quality and stability.

[0043] Furthermore, such as Figure 1 and Figure 5As shown, the clamping drive mechanism 3 includes a drive wheel telescopic rod 301. A drive wheel support arm 303 is provided at the output end of the drive wheel telescopic rod 301. A drive wheel 302 is rotatably mounted inside the drive wheel support arm 303. The drive wheel 302 abuts against the I-beam profile 9. The drive wheel telescopic rod 301 can flexibly adjust the position of the drive wheel 302 according to the actual size of the I-beam profile 9, ensuring that the drive wheel 302 always maintains a tight abutment against the I-beam profile 9. This feature allows the mechanism to adapt to various specifications of I-beam profiles 9, greatly enhancing the versatility and applicability of the device. The abutment of the drive wheel 302 against the I-beam profile 9 provides clamping force, while the rotatable arrangement reduces frictional resistance between the drive wheel 302 and the profile. During welding, this ensures the fixed position of the I-beam profile 9, guaranteeing welding accuracy, and also facilitates fine-tuning of the profile position when needed. Both the drive wheel telescopic rod 301 and the drive wheel 302 are electrically connected to the central processing unit.

[0044] In addition, such as Figure 4 As shown, the inner side of the limiting ring 501 is provided with several ball grooves 5014. Balls 506 are rolled inside the ball grooves 5014 and abut against the outer side of the circular welding guide ring 1. The balls 506 roll in the ball grooves 5014. When the limiting ring 501 slides on the circular welding guide ring 1, the traditional sliding friction is transformed into rolling friction, which greatly reduces the frictional resistance between the two. This allows the welding drive mechanism 5 to move more easily and smoothly on the circular welding guide ring 1, reducing energy loss, improving motion efficiency, effectively extending the service life of these two components, and reducing the maintenance cost and replacement frequency of the equipment.

[0045] like Figure 7 As shown, an infrared sensor 702 is fixedly installed on the U-shaped clamping block 701. The infrared sensor 702 is electrically connected to the central processing unit through a wire. The infrared sensor 702 can detect the positional relationship between the welding torch 8 and the weld in real time and promptly feed back the sensed information to the central processing unit. The central processing unit precisely adjusts the position and angle of the welding torch 8 based on these data to ensure that the welding torch 8 is always aligned with the weld, which greatly improves the welding accuracy, reduces welding deviation, and ensures welding quality.

[0046] Through the coordinated operation of the infrared sensor 702 and the central processing unit, the device can automatically sense changes in the welding environment and make corresponding adjustments, reducing the need for manual intervention. This not only improves welding efficiency but also reduces the impact of human factors on welding quality, making the entire welding process more intelligent and automated.

[0047] like Figures 1-8 As shown in this embodiment, the principle of the bridge construction H-beam profile welding device is as follows:

[0048] The limiting ring 501 abuts against and slides with the outer surface of the circular welding guide ring 1, providing stable guidance for the movement of the welding drive mechanism 5. This prevents the welding drive mechanism 5 from shaking, tilting, or derailing during sliding, ensuring the stability of the welding torch 8 during welding and thus improving welding quality. The L-shaped connecting rod 6 forms a bridge between the limiting ring 501 and the welding torch 8's telescopic push rod 7. Secured with bolts, it is not only firmly installed but also easy to disassemble and adjust. The welding torch 8's telescopic push rod 7 can extend and retract under the control of the central processing unit, precisely adjusting the welding torch. The U-shaped clamping block 701 provides a reliable clamping and fixing method for the welding torch 8, which can effectively prevent the welding torch 8 from shaking or shifting during the welding process, ensuring the accuracy of the welding trajectory, thereby improving the welding quality and reducing the generation of welding defects. In addition, the welding drive mechanism 5 can slide flexibly on the circular welding guide ring 1, which makes it easy to adjust the position and angle of the welding torch 8, so that it can better adapt to different welding positions and requirements, simplify the welding operation process, and improve the flexibility and convenience of welding.

[0049] The drive gear 503 at the output end of the drive motor 502 meshes with the driven gear 102 on the circular welding guide ring 1, so that the rotational motion of the drive motor 502 is precisely converted into the sliding of the welding drive mechanism 5 along the circular trajectory. This transmission method can ensure the accuracy and stability of the motion, so that the welding torch 8 strictly follows the preset circular path for welding, effectively improving the welding range and accuracy, reducing welding deviation, and ensuring the consistency of welding quality.

[0050] The clamping drive mechanism 3, located inside the protective support arm 202 on the guide mechanism 2, abuts against the side of the I-beam profile 9. It can adjust the clamping force and position according to different sizes of I-beam profiles 9. This design allows the welding device to adapt to welding tasks of various specifications of I-beam profiles 9, increasing the versatility and applicability of the device and improving the utilization rate of the equipment.

[0051] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0052] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0053] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A welding device for I-beam profiles used in bridge construction, comprising a circular welding guide ring (1) fixedly mounted on a guide mechanism (2), characterized in that, A welding drive mechanism (5) is slidably disposed on the circular welding guide ring (1). The welding drive mechanism (5) includes a limiting ring (501) and a drive motor (502). A central processing unit is electrically connected to the drive motor (502). The limiting ring (501) abuts against the outer side of the circular welding guide ring (1) and is slidably connected to the circular welding guide ring (1). A welding torch (8) is connected to the limiting ring (501). The output end of the drive motor (502) is provided with a drive gear (503), and the circular welding guide ring (1) is provided with a driven tooth (102). The drive gear (503) meshes with the driven tooth (102). After the drive motor (502) is started, the drive gear (503) drives the welding drive mechanism (5) to slide on the circular welding guide ring (1). The guide mechanism (2) is provided with symmetrically distributed protective support arms (202), and the interior of the protective support arm (202) is provided with an I-beam profile (9). The inner side of the protective support arm (202) is provided with a clamping drive mechanism (3), and the clamping drive mechanism (3) abuts against the side of the I-beam profile (9).

2. The welding device for I-beam profiles used in bridge construction according to claim 1, characterized in that: The limiting ring (501) is provided with a short limiting plate (5011) and a long limiting plate (5012). The short limiting plate (5011) and the long limiting plate (5012) abut against the outer side of the circular welding guide ring (1). A limiting slider (5013) is fixedly provided inside the limiting ring (501). A block guide groove (101) is provided on the circular welding guide ring (1). The limiting slider (5013) is slidably disposed inside the block guide groove (101).

3. The welding device for I-beam profiles used in bridge construction according to claim 1, characterized in that: A motor fixing plate (504) is fixedly installed on the drive motor (502), and the motor fixing plate (504) is fixedly connected to the limiting ring (501) through a connecting plate (505).

4. The welding device for I-beam profiles used in bridge construction according to claim 1, characterized in that: An L-shaped connecting rod (6) is fixedly installed on the limiting ring (501). One end of the L-shaped connecting rod (6) is fixedly connected to the limiting ring (501) by bolts, and the other end of the L-shaped connecting rod (6) is fixedly connected to a welding torch push telescopic rod (7).

5. The welding device for I-beam profiles used in bridge construction according to claim 4, characterized in that: The welding torch extension rod (7) is electrically connected to the central processing unit. The output end of the welding torch extension rod (7) is provided with a U-shaped clamping block (701), and the welding torch (8) is fixedly mounted on the U-shaped clamping block (701).

6. The welding device for I-beam profiles used in bridge construction according to claim 1, characterized in that: The upper side of the guide mechanism (2) is fixedly provided with a support connecting block (201), the support connecting block (201) is fixedly connected to the lower side of the circular welded guide ring (1), and the lower side of the guide mechanism (2) is fixedly provided with a vertical support plate (4).

7. The welding device for I-beam profiles used in bridge construction according to claim 6, characterized in that: The vertical support plate (4) has guide roller grooves (401) at both ends, and guide rollers (402) are rotatably arranged inside the guide roller grooves (401). Neodymium magnets (403) are fixedly arranged on the lower side of the vertical support plate (4).

8. The welding device for I-beam profiles used in bridge construction according to claim 1, characterized in that: The clamping drive mechanism (3) includes a drive wheel telescopic rod (301), and a drive wheel support arm (303) is provided at the output end of the drive wheel telescopic rod (301). A drive wheel (302) is rotatably provided inside the drive wheel support arm (303). The drive wheel (302) abuts against the I-beam profile (9). Both the drive wheel telescopic rod (301) and the drive wheel (302) are electrically connected to the central processing unit.

9. The welding device for I-beam profiles used in bridge construction according to claim 1, characterized in that: The inner side of the limiting ring (501) is provided with a plurality of ball grooves (5014), and balls (506) are rolled inside the ball grooves (5014), and the balls (506) abut against the outer side of the circular welding guide ring (1).

10. A welding device for I-beam profiles used in bridge construction according to claim 5, characterized in that: An infrared sensor (702) is fixedly mounted on the U-shaped clamping block (701), and the infrared sensor (702) is electrically connected to the central processing unit through a wire.

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