Auxiliary welding device for large-span steel arch

Abstract

The invention discloses an auxiliary welding device for a large-span steel arch, and belongs to the technical field of welding. Comprising a welding device body, and a detection mechanism and a locking mechanism are arranged on one side of the welding device body; according to the invention, the detection mechanism integrates a first spring reset rod, a detection rod and a ball, can move along a curve of a steel arch welding area in real time for detection, avoids traditional manual measurement errors and inconvenience, drives a screw rod through a motor to drive a sliding support and the ball on the detection rod to be tightly attached to the surface of a steel arch, and realizes continuous and accurate curve tracking. Compared with a traditional spot measurement mode, the welding device body can achieve whole-course dynamic detection of the welding seam, timely discover deviation of the welding seam caused by installation errors, foundation settlement or stress deformation, improve the detection coverage rate and precision, and is easy and convenient to operate, long-distance detection can be completed by one person, and construction efficiency and safety are remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding, and particularly relates to an auxiliary welding device for a large-span steel arch gallery. Background Art

[0002] With the wide application of large-span steel structures in modern construction projects, steel arch galleries are commonly used in structural scenarios such as station halls, exhibition halls, large factories, and bridges due to their large spans, complex curved surfaces, and high installation positions. To ensure the overall stability and service safety of the structure, the welding quality of the steel arch gallery is particularly crucial.

[0003] In practice, there are still some problems: 1. Most of the existing welding inspections for large-span steel arch galleries are carried out manually or with simple handheld detectors for local spot checks. This traditional method has many deficiencies. Firstly, manual inspection relies on the observation and operation experience of welders. Not only is the inspection coverage limited, but it is also impossible to grasp the curve changes of the entire weld in real time, making it easy to miss quality hazards such as weld offset or inconsistent arc. Secondly, handheld inspection tools require operators to repeatedly measure at high altitudes or in narrow spaces, posing a high safety risk, and the inspection data lacks continuity, making it difficult to trace and analyze the welding quality subsequently. In addition, some existing automated inspection devices are mostly single-point induction or infrared laser measurement, which are greatly affected by on-site welding fumes, high temperatures, etc., with poor stability and adaptability, and cannot accurately track the weld curve on complex curved surfaces.

[0004] 2. Most traditional welding equipment relies on manual support, temporary jigs, or fixed supports for position locking. These simple structures often cannot cope with the complex and changeable working conditions at the construction site of large-span steel arch galleries. Firstly, traditional locking devices usually cannot flexibly adjust the clamping force according to the different curved surface shapes and stress states of the steel arch gallery. Over-tightening is likely to damage the surface of the structure, and insufficient tightening is likely to cause the equipment to slip due to vibration or wind force. Secondly, there is a lack of effective buffer and vibration absorption measures. When the equipment is used at high altitudes or in a vibrating environment for a long time, the locking parts are prone to loosen, affecting the welding accuracy and even posing safety hazards. In addition, the disassembly and assembly of some existing locking structures are complex, requiring a large amount of manual operation, and it is time-consuming and laborious to reposition during transfer, reducing the construction efficiency.

[0005] Based on this, the invention designs an auxiliary welding device for a large-span steel arch gallery to solve the above problems. Summary of the Invention

[0006] The purpose of the invention is to propose an auxiliary welding device for a large-span steel arch gallery to solve the problems of discontinuous weld inspection, high risk, poor adaptability, and cumbersome operation of the traditional welding locking structure for large-span steel arch galleries.

[0007] To achieve the above purpose, the invention adopts the following technical solutions: A large-span steel arcade auxiliary welding device, including a welding device body, on one side of the welding device body, a detection mechanism and a locking mechanism are respectively provided; The detection mechanism, the detection mechanism includes a first spring return rod, a detection rod, a ball and a U-shaped connecting plate. The top of the free end of the first spring return rod is fixedly connected with a connecting rod, the top of the connecting rod is fixedly connected with the bottom end of the U-shaped connecting plate, the free end of the first spring return rod is fixedly connected with the inner side of the detection rod, and the ball is rotatably connected to the inner side of the detection rod; The locking mechanism, the locking mechanism includes a second spring return rod, a clamping plate and a buffer plate. The free end of the second spring return rod is fixedly connected with the inner side of the clamping plate, and the buffer plate is fixedly connected with the outer side of the clamping plate.

[0008] As a further description of the above technical solution: The bottom end of the welding device body is connected with a bottom plate. On one side of the top end of the bottom plate, a support arm is fixedly connected. The top end of the support arm is fixedly connected with a motor, and the output end of the motor is fixedly connected with a lead screw.

[0009] As a further description of the above technical solution: One end of the lead screw is rotatably connected with a fixed vertical plate. The bottom end of the fixed vertical plate is fixedly connected to the top end of the bottom plate. The inner side of the fixed vertical plate is fixedly connected with a sliding rod, and one end of the sliding rod is fixedly connected to the inner side of the support arm.

[0010] As a further description of the above technical solution: The middle part of the lead screw is threadedly connected with a sliding support. The bottom end of the sliding support is slidably connected with the sliding rod. The top end of the sliding support is fixedly connected with a guide rail. Inside the guide rail, a first slider and a second slider are respectively slidably connected. Inside the first slider and the second slider, rolling rods are rotatably connected.

[0011] As a further description of the above technical solution: The bottom end of the first slider is fixedly connected with an electric telescopic rod. The free end of the electric telescopic rod is fixedly connected with the top end of the second slider. The outer side of the first slider is fixedly connected with a linkage rod.

[0012] As a further description of the above technical solution: One end of the linkage rod is fixedly connected with a mounting seat. The top end of the mounting seat is fixedly connected with an audible and visual alarm. The back side of the mounting seat is fixedly connected with a bearing rod. One end of the bearing rod is fixedly connected with the back side of the first spring return rod. The upper surface of the first spring return rod is fixedly connected to the bottom end of the mounting seat. Inside the mounting seat, a base is fixedly connected. The top end of the base is fixedly connected with a double-end trigger switch.

[0013] As a further description of the above technical solution: The double - ended trigger switch is electrically connected to the sound and light alarm. Two adjusting rods are connected to the inner side of the U - shaped connecting plate, and one ends of the two adjusting rods respectively match the two trigger ends of the double - ended trigger switch.

[0014] As a further description of the above technical solution: A support plate is vertically slidably connected to the inner side of the fixed vertical plate. A marking plate is fixedly connected to the inner side of the support plate. A bearing plate is fixedly connected to the bottom end of the mounting seat. The top end of the bearing plate is fixedly connected to the bottom end of the support plate. A marking pen is fixedly connected to the bottom end of the detection rod, and the bottom end of the marking pen is attached to the surface of the marking plate.

[0015] As a further description of the above technical solution: A leg is fixedly connected to the top end of the bottom plate. One end of the leg is fixedly connected to an electric push rod. One end of the electric push rod is fixedly connected to a fixing plate. A support frame is fixedly connected to the middle of the top end of the bottom plate. An extension bracket is fixedly connected to the top end of the support frame. The bottom end of the fixing plate is fixedly connected to the top end of the extension bracket.

[0016] As a further description of the above technical solution: The free end of the electric push rod penetrates through the fixing plate and is fixedly connected to a push plate. A limiting rod is fixedly connected to the inner side of the push plate. One end of the limiting rod penetrates through the fixing plate. The inner side of the push plate is fixedly connected to the back of the second spring return rod.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, the detection mechanism integrates a spring reset rod, a detection rod and a ball, which can move along the curve of the steel arcade welding area for real-time detection, avoiding the errors and inconveniences of traditional manual measurement. The motor drives the lead screw to drive the sliding support, and the ball on the detection rod is close to the surface of the steel arcade to achieve continuous and accurate curve tracking. Compared with the traditional point measurement method, the welding device body can realize full-process dynamic detection of the weld, and timely discover the offset of the weld caused by installation error, foundation settlement or stress deformation, thereby improving the detection coverage and accuracy. It is easy to operate and a single person can complete long-distance detection, which significantly improves construction efficiency and safety. During the detection process, the ball cooperates with the spring reset rod to automatically compensate for the displacement of the detection rod caused by the curve change, avoiding detection failure. The ball rolls freely to adapt to the tiny bumps on the surface, ensuring continuous and uninterrupted signals, effectively preventing missed detection and false detection. When the detection rod is displaced, the adjustment rod triggers the double-end trigger switch, and the linked sound and light alarm reminds the operator to make timely adjustments to reduce welding errors. The intelligent response is fast, the detection process is intuitive and efficient, reducing the frequency of manual inspection and labor input, ensuring the quality re-inspection of welds, and adding marking plates and marking pens to record the displacement trajectory of steel arches in real time, which is convenient for later weld correction and quality traceability. The physical trace record avoids human misjudgment and rework caused by relying solely on sound and light alarms, saving surveying and data sorting time. Detection and welding are carried out simultaneously without interfering with construction, ensuring a high degree of integration between detection and construction, and improving welding accuracy and efficiency.

[0018] 2. In the present invention, the locking mechanism cooperates with the spring return rod, the clamping plate and the buffer plate to achieve a stable positioning of the welding device body, effectively resisting the tiny displacement caused by vibration, wind and construction interference during welding, ensuring accurate detection and weld straightness. The locking structure of the traditional device is unstable, and frequent manual adjustments are required during construction, affecting continuous operation. The clamping plate is combined with a buffering and vibration absorbing function to ensure the clamping force and prevent damage to the surface of the steel archway, extending the life of the equipment and the welded structure. The locking mechanism electric push rod and the push plate are linked to each other. The clamping force can be accurately adjusted by electronic control, reducing manual errors and labor intensity, and improving the level of automation. This structure is adaptable to different Steel arches of the same specifications and positions enhance the versatility of the device. When transferring or repositioning, the electric push rod can be reset to quickly release the lock, improving construction mobility and reuse rate, reducing installation and disassembly time and labor costs. The combination of the buffer plate and the spring return rod enables the device to automatically absorb slight displacements caused by temperature changes or vibrations when locked for a long time, preventing structural stress concentration and damage caused by excessive locking, and improving safety and reliability. This design maintains weld stability, enhances the equipment's adaptability, reduces the risk of weld dislocation and repeated adjustment due to loose locking, provides solid positioning guarantees for welding construction, and improves overall quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1Schematic diagram of the main structure of an auxiliary welding device for a large-span steel arcade proposed by the present invention; Figure 2 Schematic diagram of the structure of one side of an auxiliary welding device for a large-span steel arcade proposed by the present invention; Figure 3 Schematic diagram of the structure of the extension bracket part of an auxiliary welding device for a large-span steel arcade proposed by the present invention; Figure 4 For an auxiliary welding device for a large-span steel arcade proposed by the present invention Figure 3 Enlarged view at position A; Figure 5 Schematic diagram of the structure of the limit rod part of an auxiliary welding device for a large-span steel arcade proposed by the present invention; Figure 6 Schematic diagram of the structure of the support plate part of an auxiliary welding device for a large-span steel arcade proposed by the present invention; Figure 7 For an auxiliary welding device for a large-span steel arcade proposed by the present invention Figure 6 Enlarged view at position B; Figure 8 Schematic diagram of the structure of the guide rail part of an auxiliary welding device for a large-span steel arcade proposed by the present invention; Figure 9 For an auxiliary welding device for a large-span steel arcade proposed by the present invention Figure 8 Enlarged view at position C; Figure 10 For an auxiliary welding device for a large-span steel arcade proposed by the present invention Figure 8 Enlarged view at position D.

[0020] Legend: 1. Bottom plate; 2. Welding device body; 3. Support frame; 4. Detection mechanism; 401. Fixed vertical plate; 402. Support plate; 403. Support arm; 404. Motor; 405. Slide bar; 406. Lead screw; 407. Sliding support; 408. Guide rail; 409. Bearing plate; 410. Roller; 411. Acousto-optic alarm; 412. U-shaped connecting plate; 413. Connecting rod; 414. Detection rod; 415. Marker pen; 416. Marker plate; 417. Mounting seat; 418. Bearing rod; 419. First spring return rod; 420. First slider; 421. Electric telescopic rod; 422. Linking rod; 423. Second slider; 424. Base; 425. Ball; 426. Adjusting rod; 427. Double-end trigger switch; 5. Locking mechanism; 501. Leg; 502. Electric push rod; 503. Limit rod; 504. Fixed plate; 505. Push plate; 506. Second spring return rod; 507. Clamping plate; 508. Buffer plate; 6. Extension bracket. Detailed implementation mode

[0021] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1 - 10 , the present invention provides a technical solution: a large-span steel arch corridor auxiliary welding device, including a welding device body 2, and a detection mechanism 4 and a locking mechanism 5 are respectively arranged on one side of the welding device body 2; The detection mechanism 4, the detection mechanism 4 includes a first spring return rod 419, a detection rod 414, a ball 425 and a U-shaped connecting plate 412. The top end of the free end of the first spring return rod 419 is fixedly connected with a connecting rod 413, the top end of the connecting rod 413 is fixedly connected with the bottom end of the U-shaped connecting plate 412, the free end of the first spring return rod 419 is fixedly connected with the inner side of the detection rod 414, and the ball 425 is rotatably connected to the inner side of the detection rod 414; The locking mechanism 5, the locking mechanism 5 includes a second spring return rod 506, a clamping plate 507 and a buffer plate 508. The free end of the second spring return rod 506 is fixedly connected with the inner side of the clamping plate 507, and the buffer plate 508 is fixedly connected with the outer side of the clamping plate 507.

[0023] Specifically, as Figures 1 - 2 shown, the bottom end of the welding device body 2 is connected with a bottom plate 1, one side of the top end of the bottom plate 1 is fixedly connected with a support arm 403, the top end of the support arm 403 is fixedly connected with a motor 404, and the output end of the motor 404 is fixedly connected with a lead screw 406.

[0024] It should be noted that among the above components, Specifically, as Figures 1 - 2 shown, one end of the lead screw 406 is rotatably connected with a fixed vertical plate 401, the bottom end of the fixed vertical plate 401 is fixedly connected to the top end of the bottom plate 1, the inner side of the fixed vertical plate 401 is fixedly connected with a slide bar 405, and one end of the slide bar 405 is fixedly connected to the inner side of the support arm 403.

[0025] It should be noted that among the above components, the bottom plate 1 plays a role of stable support, can bear the weight of the entire welding device, and ensures that the equipment does not tilt or shake during movement or operation. The support arm 403 and the motor 404 are cooperatively installed on the bottom plate 1. The motor 404 is connected to the lead screw 406 through the output end. When the motor 404 operates, it can drive the lead screw 406 to rotate, thereby realizing the drive control of the subsequent sliding support 407, so that the detection mechanism 4 can smoothly advance along the weld curve of the steel arch corridor.

[0026] Specifically, as Figures 6 - 10 shown, a sliding support 407 is threadedly connected to the middle of the lead screw 406. The bottom end of the sliding support 407 is slidably connected to the slide bar 405. The top end of the sliding support 407 is fixedly connected to a guide rail 408. Inside the guide rail 408, a first slider 420 and a second slider 423 are respectively slidably connected. Inside the first slider 420 and inside the second slider 423, rolling rods 410 are rotatably connected.

[0027] It should be noted that among the above components, one end of the lead screw 406 is connected to the fixed vertical plate 401 through a rotational connection to ensure that the lead screw 406 can be stably fixed in position during rotation, avoiding transmission deviation caused by jitter. The fixed vertical plate 401 is fixedly installed with the bottom plate 1 through its bottom end to ensure that the rotation center position of the lead screw 406 is accurate. The slide bar 405 is connected to the inside of the support arm 403, which can provide auxiliary guidance for the sliding support 407, enabling the sliding support 407 to move smoothly without tilting or jamming when driven by the lead screw 406.

[0028] Specifically, as Figures 6 - 10 shown, the bottom end of the first slider 420 is fixedly connected to an electric telescopic rod 421. The free end of the electric telescopic rod 421 is fixedly connected to the top end of the second slider 423. The outside of the first slider 420 is fixedly connected to a linkage rod 422.

[0029] It should be noted that among the above components, a sliding support 407 is threadedly connected to the middle of the lead screw 406. By rotating the lead screw 406, the sliding support 407 is driven to move axially along the lead screw 406. The bottom end of the sliding support 407 is slidably matched with the slide bar 405 to achieve two-way guidance and limit, ensuring the linearity and stability of the operation of the sliding support 407. A guide rail 408 is installed at the top end of the sliding support 407. The inside of the guide rail 408 allows the first slider 420 and the second slider 423 to slide respectively. Rolling rods 410 are rotatably installed inside the sliders. The rolling rods 410 can roll along the surface of the steel arch gallery, enabling the detection rod 414 to move smoothly along the weld curve, achieving precise curve detection, reducing the detection resistance, and ensuring the continuity of detection.

[0030] Specifically, as Figures 6 - 10 shown, one end of the linkage rod 422 is fixedly connected to a mounting seat 417. The top end of the mounting seat 417 is fixedly connected to an audible and visual alarm 411. The back side of the mounting seat 417 is fixedly connected to a bearing rod 418. One end of the bearing rod 418 is fixedly connected to the back side of a first spring return rod 419. The upper surface of the first spring return rod 419 is fixedly connected to the bottom end of the mounting seat 417. Inside the mounting seat 417, a base 424 is fixedly connected. The top end of the base 424 is fixedly connected to a double-end trigger switch 427.

[0031] It should be noted that among the above components, the bottom end of the first slider 420 is fixedly connected to the electric telescopic rod 421, and the free end of the electric telescopic rod 421 is connected to the top end of the second slider 423. The distance between the two sliders can be adjusted by the telescopic movement of the electric telescopic rod 421, so as to adapt to the surfaces of steel arch galleries with different curvatures and keep the roller 410 always in contact with the weld curve. A linkage rod 422 is fixedly installed on the outside of the first slider 420, which is used to drive the subsequent actions of the sound and light alarm and the trigger switch, realizing the linkage control of detection and alarm. The overall structure realizes the adaptive fitting and real-time alarm of the detection component, improving the accuracy and safety of detection.

[0032] Specifically, as Figures 6 - 10 shown, the double-end trigger switch 427 is electrically connected to the sound and light alarm 411. Two adjusting rods 426 are connected to the inner sides of the U-shaped connecting plate 412, and one ends of the two adjusting rods 426 respectively match the two trigger ends of the double-end trigger switch 427.

[0033] It should be noted that among the above components, one end of the linkage rod 422 is connected to the mounting seat 417. A sound and light alarm 411 is arranged above the mounting seat 417 to timely prompt the operator of the current detection state and improve the on-site safety. The back of the mounting seat 417 is connected to the bearing rod 418, and the bearing rod 418 is connected to the mounting seat 417 through the first spring return rod 419, which has an automatic reset function and can effectively absorb the impact caused by slight collisions during detection, prolonging the service life of the components. The base 424 is installed inside the mounting seat 417, and the double-end trigger switch 427 is fixed on the base 424, which can sense the movement of the linkage rod 422. When the detection is abnormal or the deviation exceeds the limit, the double-end trigger switch 427 immediately drives the sound and light alarm 411 to alarm.

[0034] Specifically, as Figures 6 - 10 shown, a support plate 402 is vertically slidably connected to the inner side of the fixed vertical plate 401. A marking plate 416 is fixedly connected to the inner side of the support plate 402. The bottom end of the mounting seat 417 is fixedly connected to a bearing plate 409, and the top end of the bearing plate 409 is fixedly connected to the bottom end of the support plate 402. The bottom end of the detection rod 414 is fixedly connected to a marking pen 415, and the bottom end of the marking pen 415 is in contact with the surface of the marking plate 416.

[0035] It should be noted that among the above components, the double-end trigger switch 427 is electrically connected to the sound and light alarm 411. When the detection deviation reaches the preset value, the trigger switch synchronously outputs an electric signal to make the alarm emit sound and light prompts, reminding the operator to take corrective measures in time. Two adjusting rods 426 are equipped on the inner sides of the U-shaped connecting plate 412 respectively. The adjusting rods 426 match the two trigger ends of the double-end trigger switch 427, and the trigger sensitivity and distance can be flexibly adjusted according to different detection requirements.

[0036] Specifically, asFigures 3 - 5 As shown in the figure, a leg 501 is fixedly connected to the top end of the bottom plate 1. One end of the leg 501 is fixedly connected to an electric push rod 502. One end of the electric push rod 502 is fixedly connected to a fixing plate 504. A support frame 3 is fixedly connected to the middle of the top end of the bottom plate 1. An extension bracket 6 is fixedly connected to the top end of the support frame 3. The bottom end of the fixing plate 504 is fixedly connected to the top end of the extension bracket 6.

[0037] It should be noted that, among the above components, a vertically slidable support plate 402 is installed inside the fixed vertical plate 401 to support the up and down adjustment movement of the subsequent marking mechanism. A marking plate 416 is fixedly connected to the inside of the support plate 402 to provide a stable marking base surface. The bottom end of the mounting seat 417 is connected to the bearing plate 409. The bearing plate 409 and the bottom end of the support plate 402 are connected to form an integral structure, which can bear the weights of the detection rod 414 and the marking pen 415 and prevent shaking during the marking process.

[0038] Specifically, as Figures 3 - 5 shown in the figure, the free end of the electric push rod 502 penetrates through the fixing plate 504 and is fixedly connected to a push plate 505. A limiting rod 503 is fixedly connected to the inside of the push plate 505. One end of the limiting rod 503 penetrates through the fixing plate 504. The inside of the push plate 505 is fixedly connected to the back surface of the spring return rod two 506.

[0039] It should be noted that, among the above components, the free end of the electric push rod 502 passes through the fixing plate 504 and is connected to the push plate 505. A limiting rod 503 is arranged inside the push plate 505, and one end penetrates through the fixing plate 504 to limit the moving distance of the push plate 505 and avoid structural damage caused by excessive pushing. The inside of the push plate 505 is fixedly connected to the back surface of the spring return rod two 506 to provide an automatic return elastic force, ensure that the push plate 505 automatically resets after loosening, and enhance the locking and buffering functions.

[0040] Working principle, when in use: The operator first starts the motor 404 on the welding device body 2. The output end of the motor 404 is fixedly connected to the lead screw 406. The rotation of the lead screw 406 drives the sliding support 407 threadedly connected thereto to move smoothly along the axial direction of the lead screw 406. The bottom end of the sliding support 407 is slidably connected to the slide bar 405 on the fixed vertical plate 401, which not only ensures the stability of the sliding path but also avoids skew caused by the self-rotation of the lead screw 406. The top end of the sliding support 407 is fixedly connected with a guide rail 408. A slider one 420 and a slider two 423 are slidably installed inside the guide rail 408, and rotatable rollers 410 are respectively arranged inside the two sliders. These rollers 410 are not used for clamping and fixing the steel arch gallery but play a role of guiding and follow-up support. When the device moves along the outer arc of the steel arch gallery, the rollers 410 can adaptively roll along the curve of the steel arch gallery surface, ensuring that the guide rail 408 and the sliders always closely adhere to the outer surface of the steel arch gallery and driving the detection rod 414 to stably follow and detect along the welding line in real time. The inner side of the detection rod 414 is connected to the spring return rod one 419 through the connecting rod 413, and the outer side is rotatably connected with a ball 425. When the detection mechanism 4 moves along the steel arch gallery driven by the sliding support 407, the ball 425 fits on the outer surface of the steel arch gallery and freely rolls along with the surface shape. If the steel arch gallery is offset, the ball 425 will generate a small displacement along with the offset, driving the detection rod 414 and the spring return rod one 419 to deform, ensuring that the ball 425 continuously fits on the steel arch gallery surface. When the detection rod 414 moves due to the offset, the U-shaped connecting plate 412 connected to its upper end will synchronously displace, thereby driving the adjusting rod 426 arranged inside the U-shaped connecting plate 412 to trigger the double-end trigger switch 427. After being triggered, the audible and visual alarm 411 is started through electrical connection to emit audible and visual signals to remind the operator of the offset hazard. At the same time, a marking pen 415 is fixedly connected to the bottom end of the detection rod 414. Under the action of the spring return rod one 419, the marking pen 415 always fits on the surface of the marking plate 416, and the actual offset curve of the steel arch gallery can be depicted on the marking plate 416 along with the displacement of the detection rod 414, providing an effective basis for later weld seam correction and quality traceability. Through the above structure, the detection mechanism 4 can realize continuous, stable, and visual detection of the large-span steel arch gallery, significantly improving the accuracy of welding quality control and construction efficiency. The locking mechanism 5 mainly includes components such as a spring return rod two 506, a clamping plate 507, and a buffer plate 508. The locking mechanism 5 is installed on one side of the welding device body 2 and is connected to the inner side of the clamping plate 507 through the spring return rod two 506. A buffer plate 508 is fixedly connected to the outer side of the clamping plate 507. After the welding device moves to the target position, the user can drive the fixed plate 504 and the push plate 505 through the electric push rod 502, so that the push plate 505 pushes the limiting rod 503 to slide along the inner side of the fixed plate 504 and further drives the clamping plate 507 to approach the surface of the target steel arch gallery or related structure.When the clamping plate 507 contacts the surface of the steel archway or its supporting structure, the spring return rod 2 506 is compressed to store elastic force, so that the clamping plate 507 is close to the surface of the steel archway to form a preliminary clamping force, and the outer buffer plate 508 cooperates with the clamping plate 507 to effectively absorb the vibration and impact from the steel archway, avoiding the adverse effects of slight displacement or vibration in the construction environment on the test results and welding quality. During the welding process, if an external force impact is encountered, the buffer plate 508 can form a buffer and displacement compensation for the clamping plate 507, so that the locking force is stable and no excessive indentation or damage is caused to the surface of the steel archway. After the welding is completed, the operator can control the electric push rod 502 The clamping plate 507 is reset, and the spring return rod 506 releases its elastic force at the same time, driving the clamping plate 507 to automatically retract to its initial position, facilitating the equipment to move to the next welding point and continue operation. In addition, the locking mechanism 5 cooperates with the detection mechanism 4, the support frame 3, and the push plate 505. While maintaining detection accuracy, it also stabilizes the device structure, enhances operational safety, and reduces the workload of manual repetitive positioning. The provision of the locking mechanism 5 not only improves the adaptability and service life of the welding device, but also ensures the continuity and reliability of the welding process under complex working conditions, greatly improving the overall safety and efficiency of large-span steel archway welding construction.

[0041] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A large-span steel arcade auxiliary welding device, comprising a welding device body (2), characterized in that, On one side of the welding device body (2), a detection mechanism (4) and a locking mechanism (5) are respectively provided; Detection mechanism (4), the detection mechanism (4) includes a first spring return rod (419), a detection rod (414), a ball (425) and a U-shaped connecting plate (412). At the top of the free end of the first spring return rod (419), a connecting rod (413) is fixedly connected. The top of the connecting rod (413) is fixedly connected to the bottom end of the U-shaped connecting plate (412). The free end of the first spring return rod (419) is fixedly connected to the inner side of the detection rod (414). The ball (425) is rotatably connected to the inner side of the detection rod (414); Locking mechanism (5), the locking mechanism (5) includes a second spring return rod (506), a clamping plate (507) and a buffer plate (508). The free end of the second spring return rod (506) is fixedly connected to the inner side of the clamping plate (507). The buffer plate (508) is fixedly connected to the outer side of the clamping plate (507).

2. The auxiliary welding device for a long-span steel arcade according to claim 1, characterized in that, The bottom end of the welding device body (2) is connected to a bottom plate (1). On one side of the top end of the bottom plate (1), a support arm (403) is fixedly connected. The top end of the support arm (403) is fixedly connected to a motor (404). The output end of the motor (404) is fixedly connected to a lead screw (406).

3. The auxiliary welding device for a large-span steel arcade according to claim 2, characterized in that, One end of the lead screw (406) is rotatably connected to a fixed vertical plate (401). The bottom end of the fixed vertical plate (401) is fixedly connected to the top end of the bottom plate (1). The inner side of the fixed vertical plate (401) is fixedly connected to a slide bar (405). One end of the slide bar (405) is fixedly connected to the inner side of the support arm (403).

4. The large-span steel arcade auxiliary welding device according to claim 3, characterized in that, The middle part of the lead screw (406) is threadedly connected to a sliding support (407). The bottom end of the sliding support (407) is slidably connected to the slide bar (405). The top end of the sliding support (407) is fixedly connected to a guide rail (408). Inside the guide rail (408), a first slider (420) and a second slider (423) are respectively slidably connected. Inside the first slider (420) and the second slider (423), a rolling rod (410) is rotatably connected.

5. The large-span steel arcade auxiliary welding device according to claim 4, characterized in that, The bottom end of the first slider (420) is fixedly connected to an electric telescopic rod (421). The free end of the electric telescopic rod (421) is fixedly connected to the top end of the second slider (423). The outer side of the first slider (420) is fixedly connected to a linkage rod (422).

6. The large-span steel arcade auxiliary welding device according to claim 5, characterized in that, One end of the linkage rod (422) is fixedly connected to a mounting seat (417). The top end of the mounting seat (417) is fixedly connected to an audible and visual alarm (411). The back side of the mounting seat (417) is fixedly connected to a bearing rod (418). One end of the bearing rod (418) is fixedly connected to the back side of the first spring return rod (419). The upper surface of the first spring return rod (419) is fixedly connected to the bottom end of the mounting seat (417). Inside the mounting seat (417), a base (424) is fixedly connected. The top end of the base (424) is fixedly connected to a double-end trigger switch (427).

7. The large-span steel arcade auxiliary welding device according to claim 6, characterized in that, The double-ended trigger switch (427) is electrically connected to the acoustic-optic alarm (411). Both inner sides of the U-shaped connecting plate (412) are connected with two adjusting rods (426), and one ends of the two adjusting rods (426) respectively match with the two trigger ends of the double-ended trigger switch (427).

8. A large-span steel arcade auxiliary welding device according to claim 7, characterized in that, A support plate (402) is vertically slidably connected to the inner side of the fixed vertical plate (401). A marking plate (416) is fixedly connected to the inner side of the support plate (402). A bearing plate (409) is fixedly connected to the bottom end of the mounting seat (417). The top end of the bearing plate (409) is fixedly connected to the bottom end of the support plate (402). A marking pen (415) is fixedly connected to the bottom end of the detection rod (414). The bottom end of the marking pen (415) is attached to the surface of the marking plate (416).

9. The auxiliary welding device for a large-span steel arcade according to claim 8, characterized in that, Legs (501) are fixedly connected to the top end of the bottom plate (1). An electric push rod (502) is fixedly connected to one end of the legs (501). A fixing plate (504) is fixedly connected to one end of the electric push rod (502). A support frame (3) is fixedly connected to the middle of the top end of the bottom plate (1). An extension bracket (6) is fixedly connected to the top end of the support frame (3). The bottom end of the fixing plate (504) is fixedly connected to the top end of the extension bracket (6).

10. A large-span steel arcade auxiliary welding device according to claim 9, characterized in that, The free end of the electric push rod (502) penetrates through the fixing plate (504) and is fixedly connected with a push plate (505). A limiting rod (503) is fixedly connected to the inner side of the push plate (505). One end of the limiting rod (503) penetrates through the fixing plate (504). The inner side of the push plate (505) is fixedly connected to the back surface of the spring return rod two (506).

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