A prefabricated pile welding device based on building construction

Abstract

The application relates to a prefabricated pile welding device based on building construction and belongs to the technical field of welding devices. The prefabricated pile welding device comprises upper and lower positioning structures, a synchronous driving centering assembly is arranged between the upper and lower positioning structures, a follow-up fixing assembly is arranged on the upper and lower positioning structures, a welding structure is further arranged between the upper and lower positioning structures, and a welding slag recovery assembly is arranged on the welding structure. The synchronous driving centering assembly is arranged at a non-welding end of the welding structure, the synchronous driving centering assembly is used for driving the upper and lower positioning structures to be synchronously horizontally opened and closed, and axis misalignment deviation generated by step-by-step clamping of upper and lower pipe piles is eliminated. The application solves the problem that the existing clamping equipment adopts multiple power sources to drive upper and lower positioning rings, the opening and closing are out of synchronization, an included angle is easily formed between pipe pile butt joint axes, and welding precision is reduced.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to a precast pile welding device based on building construction. Background Technology

[0002] In the construction of building pile foundations, the welding of precast concrete pipe piles is an essential process. On the construction site, simple manual clamps or split clamping equipment are generally used to complete the docking and positioning of the upper and lower sections of the pipe piles.

[0003] Existing precast pile welding clamping equipment lacks an integrated synchronous centering structure. The upper and lower positioning rings are equipped with multiple power sources, and the opening and closing actions are prone to time differences, making it difficult to achieve synchronous closing and centering. Even if some equipment is equipped with infrared detection components, it can only complete the misalignment alarm and cannot avoid the offset problem caused by asynchronous clamping from the mechanical structure level. The step-by-step movement of the upper and lower positioning rings will cause uneven force on the two sections of the pipe pile. One side is clamped too tightly, while the other side is suspended and tilted. During correction, only the upper positioning frame can be adjusted separately. The axes of the two pile sections are prone to forming an angle, making it difficult to achieve complete collinearity.

[0004] Therefore, this application provides a precast pile welding device based on building construction to meet the requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a precast pile welding device based on building construction, so as to solve the problem that the opening and closing of the upper and lower positioning rings are easily out of sync and the welding accuracy is reduced due to the misalignment of the pipe piles.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A precast pile welding device based on building construction includes an upper positioning structure and a lower positioning structure. A synchronous drive centering component is provided between the upper and lower positioning structures. Follower fixing components are provided on the upper and lower positioning structures. A welding structure is also provided between the upper and lower positioning structures, and a welding slag recovery component is provided on the welding structure. The synchronous drive centering component is located at the non-welding end of the welding structure. The synchronous drive centering component is used to drive the upper and lower positioning structures to open and close synchronously and horizontally, eliminating the axial misalignment deviation caused by the step-by-step clamping of the upper and lower pipe piles. Several sets of follower fixing components are arranged circumferentially along the upper and lower positioning structures. The follower fixing components are used to trigger the clamping action by the closing displacement of the positioning mechanism, avoiding different clamping sequences of the upper and lower pipe piles and unilateral pressure tilting. The welding slag recovery component is used to move synchronously around the welding torch, isolating and collecting welding spatter and welding slag in real time, preventing welding slag accumulation on the rack track and causing the welding torch to deviate.

[0007] Optionally, the upper positioning structure and the lower positioning structure are arranged in a mirror image with the welded structure annular track as a reference. The lower positioning structure includes a mounting plate one, and an arc-shaped positioning plate one and an arc-shaped positioning plate two are provided at the end of the mounting plate one. The mounting plate one, the arc-shaped positioning plate one and the arc-shaped positioning plate two are hingedly connected by a hinge shaft.

[0008] Optionally, the synchronous drive centering assembly includes a vertically arranged dual-axis motor. The two output ends of the dual-axis motor drive the upper positioning structure and the lower positioning structure to work synchronously, respectively. Both output ends of the dual-axis motor are driven and connected to a rotating shaft. A gear is sleeved on the rotating shaft. A sliding groove is provided on the mounting plate. A toothed plate is slidably connected in the sliding groove. The gear and the toothed plate are meshed.

[0009] Optionally, the synchronous drive centering assembly further includes a centering structure one, which includes a slip ring mounted on a mounting plate one. A centering rod is slidably connected inside the slip ring. One end of the centering rod is fixedly connected to a toothed plate one, and a hinge seat one is sleeved on the other end of the centering rod. Two hinge rods are hingedly connected to both sides of the hinge seat one, and the other ends of the two hinge rods are hingedly connected to two hinge seats two. The two hinge seats two are respectively fixedly mounted on an arc-shaped positioning plate one and an arc-shaped positioning plate two. An infrared emitting device is installed on the upper surface of the arc-shaped positioning plate one and the arc-shaped positioning plate two in the lower positioning structure, and an infrared receiving device is installed on the lower surface of the arc-shaped positioning plate one and the arc-shaped positioning plate two in the upper positioning structure.

[0010] Optionally, the follow-up fixing assembly includes a receiving cavity formed on the first arc-shaped positioning plate and the second arc-shaped positioning plate. A transmission block is provided in the receiving cavity, and a sliding shaft is fixedly connected to the transmission block. A second sliding groove is fixedly connected in the receiving cavity. The sliding shaft is slidably connected to the second sliding groove. A transmission inclined surface is provided at both the upper and lower ends of the transmission block.

[0011] Optionally, the follow-up fixing assembly further includes two fixing structures arranged vertically. The fixing structure includes a second transmission inclined surface that is adapted to the first transmission inclined surface arranged at the upper and lower ends of the transmission block. A fixing rod is fixedly connected to the second transmission inclined surface, and an arc-shaped fixing plate is installed on the fixing rod. An expansion cavity is fixedly connected to the upper surface of the first arc-shaped positioning plate and the second arc-shaped positioning plate. The upper fixing structure slides in the expansion cavity, and the lower fixing structure slides in the receiving cavity.

[0012] Optionally, the welding structure includes a second mounting plate, on which the dual-axis motor is mounted. The second mounting plate is provided with a first motor and a second centering structure, which is the same as the synchronous drive centering assembly. The second centering structure is driven and connected by the first motor. At the other end of the second mounting plate, there are an arc-shaped placement plate and an arc-shaped placement plate. An arc-shaped welding plate and an arc-shaped welding plate are fixedly connected to the arc-shaped placement plate and the arc-shaped placement plate, respectively.

[0013] Optionally, the first and second arc-shaped welding plates are provided with arc-shaped racks, the welding structure further includes a sliding block, a second motor is provided on the side of the sliding block, the drive shaft of the second motor is rotatably connected inside the sliding block, a second gear is sleeved on the drive shaft of the second motor, the second gear meshes with the arc-shaped rack, and a welding torch is mounted on the upper surface of the sliding block through a mounting seat.

[0014] Optionally, the welding slag recycling assembly includes a sliding plate, which is slidably connected to a sliding block. A toothed plate is provided at the bottom of the sliding plate, and a motor is mounted on the sliding block. The drive shaft of the motor is rotatably connected inside the sliding block, and a gear is sleeved on the drive shaft of the motor, which meshes with the toothed plate.

[0015] Optionally, the welding end of the welding torch is fitted with an isolation plate, and the inner sides of the first and second arc-shaped welding plates are equipped with collection grooves, with elastic protrusions provided on the inner side of the collection grooves.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: In the above solution, by setting up a synchronous drive centering component, a single vertical dual-axis motor can synchronously drive the upper and lower positioning structures to open and close, eliminating the need for multiple independent drive devices. This simplifies the overall electrical control circuitry and reduces the failure rate in dusty and frequently vibrating construction sites. The synchronous operation of the motor's outputs at both ends, along with the gear and rack mechanism and four-bar linkage, drives the arc-shaped positioning plates on both sides to retract synchronously, preventing misalignment where the upper ring is in place while the lower ring lags behind. Combined with an infrared light path interlocking design, the welding mechanism is only allowed to start when the central axes of the upper and lower precast piles are completely aligned and the light path is unobstructed, preventing cracks and slag inclusions caused by misaligned welding.

[0017] By setting up a follow-up fixing component, the clamping action is triggered by the inward displacement of the positioning plate. The whole machine has a compact structure and does not occupy extra construction space. When the equipment is unloaded, the upper arc-shaped fixing plate automatically retracts into the expansion cavity, so there will be no collision or interference when hoisting pipe piles. As the positioning plate approaches the outer wall of the pile body, the lower fixing plate contacts the pile body first. With the help of the inclined surface, the transmission block is pushed to slide, and the upper clamping block is pushed out simultaneously. The upper and lower clamping parts fit against the pile wall synchronously, and the pipe wall is subjected to uniform force. There will be no one side being pressed and the other side being suspended and tilted. The entire inclined surface transmission structure has no electrical dependence and will not have synchronization error even after long-term repeated clamping. It can be adapted to precast piles of various outer diameters and has good versatility.

[0018] By setting up a slag recovery component, the welding torch moves synchronously around the pile body. During welding, the sliding plate automatically extends, the isolation plate blocks high-temperature splashes, and the welding slag falls into the inner collection tank. The elastic protrusions in the tank prevent debris from falling onto the rack and causing jamming. There is no need to stop the machine midway to manually clean the track, which effectively shortens the welding time of a single pile and reduces the safety risk of workers being burned by high-temperature splashes. Attached Figure Description

[0019] Figure 1 A three-dimensional structural diagram of a precast pile welding device based on building construction. Figure 2 This is a three-dimensional structural diagram of a precast pile welding device based on building construction from another perspective. Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the diagram; Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point B in the diagram; Figure 5 A schematic diagram of the three-dimensional structure of the lower positioning structure and the synchronous drive centering component; Figure 6 A cross-sectional view of the synchronous drive centering component; Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point C; Figure 8 This is a three-dimensional structural diagram of the welded structure; Figure 9 This is a three-dimensional structural diagram of the welded structure. Figure 10 This is a three-dimensional diagram of the exploded sliding block; Figure 11 for Figure 10 Enlarged schematic diagram of the structure at point D; Figure 12 This is a cross-sectional view of the arc-shaped welding plate.

[0020] Figure label: 1. Upper positioning structure; 2. Lower positioning structure; 201. Mounting plate one; 202. Arc-shaped positioning plate one; 203. Arc-shaped positioning plate two; 204. Hinge shaft; 3. Synchronous drive centering assembly; 301. Dual-axis motor; 302. Rotating shaft; 303. Gear one; 304. Slide groove one; 305. Gear plate one; 306. Centering structure one; 307. Slip ring; 308. Centering rod; 309. Hinge seat one; 310. Hinge rod; 311. Hinge seat two; 4. Follower fixing assembly; 401. Receiving cavity; 402. Transmission block; 403. Slide shaft; 404. Slide groove two; 405. Transmission inclined surface one; 406. Expansion cavity; 407. Fixing structure; 40 8. Transmission inclined plane II; 409. Fixed rod; 410. Arc-shaped fixed plate; 5. Welding structure; 501. Mounting plate II; 502. Motor I; 503. Centering structure II; 504. Arc-shaped placement plate I; 505. Arc-shaped placement plate II; 506. Arc-shaped welding plate I; 507. Arc-shaped welding plate II; 508. Arc-shaped rack; 509. Sliding block; 510. Motor II; 511. Gear II; 512. Welding torch; 6. Welding slag recovery assembly; 601. Slide plate; 602. Gear plate II; 603. Motor III; 604. Gear III; 605. Isolation plate; 606. Collection trough; 607. Elastic protrusion; 7. Infrared emitting device; 8. Infrared receiving device. Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the following detailed description is provided in conjunction with the accompanying drawings and preferred embodiments, based on the specific implementation methods, structures, features and effects of the present invention.

[0022] like Figures 1 to 12 As shown, an embodiment of the present invention provides a precast pile welding device based on building construction, including an upper positioning structure 1 and a lower positioning structure 2. A synchronous drive centering component 3 is provided between the upper positioning structure 1 and the lower positioning structure 2. A follower fixing component 4 is provided on the upper positioning structure 1 and the lower positioning structure 2. A welding structure 5 is also provided between the upper positioning structure 1 and the lower positioning structure 2. A welding slag recovery component 6 is provided on the welding structure 5. The synchronous drive centering component 3 is provided at the non-welding end of the welding structure 5. The synchronous drive centering component 3 is used to drive the upper positioning structure 1 and the lower positioning structure 2 to open and close synchronously and horizontally, eliminating the axial misalignment deviation caused by the step clamping of the upper and lower pipe piles. Several sets of follower fixing components 4 are provided around the upper positioning structure 1 and the lower positioning structure 2. The follower fixing components 4 are used to trigger the clamping action by relying on the closing displacement of the positioning mechanism, avoiding the different clamping sequence of the upper and lower pipe piles and the tilting of one side due to pressure. The welding slag recovery component 6 is used to move synchronously around the welding torch 512, isolate and collect welding spatter and welding slag in real time, and prevent the welding torch 512 from deviating due to the accumulation of welding slag on the rack track.

[0023] The synchronous drive component drives the upper and lower positioning structures 2 to open and close synchronously, avoiding axial misalignment caused by step clamping. The clamping action is triggered synchronously with the positioning and closing, eliminating the need for additional clamping power components. The number of parts in the whole machine is reduced. The welding slag recovery component 6 moves synchronously around the welding torch 512, collecting welding spatter in real time and preventing welding slag from getting stuck on the ring rack and causing the welding torch 512 to deviate, thus improving the continuous stability of welding on the construction site.

[0024] like Figures 1 to 2 As shown, the upper positioning structure 1 and the lower positioning structure 2 are arranged in a mirror image with the circular track of the welded structure 5 as the reference. The lower positioning structure 2 includes a mounting plate 201. The end of the mounting plate 201 is provided with an arc-shaped positioning plate 202 and an arc-shaped positioning plate 203. The mounting plate 201, the arc-shaped positioning plate 202 and the arc-shaped positioning plate 203 are hingedly connected by a hinge shaft 204.

[0025] The upper and lower positioning structure 2 adopts a mirror-symmetrical arrangement. The hinge and arc plate components of the two types of positioning rings are interchangeable, and the molds can be used together during processing and production, which effectively reduces processing costs. The mounting plate, together with the hinge shaft 204, realizes the opening and closing structure of the arc positioning plate. The opening space is sufficient when loading and unloading precast piles, making the hoisting of upper and lower pipe piles more convenient. The upper and lower positioning benchmarks are unified, and the infrared transmitter and receiver can accurately correspond to the upper and lower parts. The coaxial verification of pipe piles is faster, reducing the time for manual fine-tuning.

[0026] like Figures 2 to 4 As shown, the synchronous drive centering assembly 3 includes a vertically arranged dual-axis motor 301. The two output ends of the dual-axis motor 301 drive the upper positioning structure 1 and the lower positioning structure 2 to work synchronously. Both output ends of the dual-axis motor 301 are driven and connected to a rotating shaft 302. A gear 303 is sleeved on the rotating shaft 302. A sliding groove 304 is provided on the mounting plate 201. A toothed plate 305 is slidably connected in the sliding groove 304. The gear 303 and the toothed plate 305 are meshed.

[0027] A single vertical dual-axis motor 301 is used as the sole power source for positioning and opening. The upper and lower output shafts of the motor operate synchronously, and the gears and racks on both sides synchronously pull the upper and lower positioning structures 2 to move horizontally. There will be no asynchronous problems such as the upper ring moving lagging and the lower ring remaining stationary. The gear and rack transmission clearance is small, the positioning and opening accuracy is high, and it is not easy to loosen under long-term vibration conditions on the construction site. The equipment has a longer service life. A single motor replaces multiple independent drive mechanisms, the electrical control circuit is simple, there are fewer fault points, and the difficulty of on-site maintenance is lower.

[0028] like Figures 2 to 4As shown, the synchronous drive centering assembly 3 also includes a centering structure 306. The centering structure 306 includes a slip ring 307 mounted on a mounting plate 201. A centering rod 308 is slidably connected inside the slip ring 307. One end of the centering rod 308 is fixedly connected to a toothed plate 305. A hinge seat 309 is sleeved on the other end of the centering rod 308. Two hinge rods 310 are hingedly connected to both sides of the hinge seat 309. The other ends of the two hinge rods 310 are hingedly connected to two hinge seats 311. The two hinge seats 311 are fixedly mounted on an arc-shaped positioning plate 202 and an arc-shaped positioning plate 203, respectively. An infrared emitting device 7 is installed on the upper surface of the arc-shaped positioning plate 202 and the arc-shaped positioning plate 203 in the lower positioning structure 2. An infrared receiving device 8 is installed on the lower surface of the arc-shaped positioning plate 202 and the arc-shaped positioning plate 203 in the upper positioning structure 1.

[0029] The slip ring 307, centering rod 308, and hinge rod 310 form a linkage four-bar mechanism. The opening and closing range of the arc-shaped positioning plates on both sides remains consistent, and the precast pile can automatically center itself, resulting in higher initial centering accuracy. The upper and lower matching infrared transmitting and receiving devices form an optical path interlock. Only when the central axes of the two pipe piles are completely aligned and the optical path is open can the welding structure 5 be activated, reducing quality defects such as incomplete weld penetration and cracks. The entire linkage is a purely mechanical structure, unaffected by on-site dust and vibration, and the reliability of sensor verification is stronger.

[0030] like Figures 5 to 7 As shown, the follower fixing component 4 includes a receiving cavity 401 opened on the arc-shaped positioning plate 1 202 and the arc-shaped positioning plate 203. A transmission block 402 is provided in the receiving cavity 401. A sliding shaft 403 is fixedly connected to the transmission block 402. A sliding groove 2 404 is fixedly connected in the receiving cavity 401. The sliding shaft 403 is slidably connected to the sliding groove 2 404. A transmission inclined surface 405 is provided at both the upper and lower ends of the transmission block 402.

[0031] Most of the structure of the follow-up fixing component 4 is located in the receiving cavity 401 inside the arc-shaped positioning plate, eliminating the need for an external clamping bracket. This makes the overall shape more compact, allowing for normal placement even on narrow working surfaces of pile foundations. The sliding shaft 403 and the sliding groove restrict the transmission block 402 to slide only horizontally in a straight line, ensuring a stable motion trajectory. The inclined surface will not shift under force. Each transmission block 402 has a transmission inclined surface at both the top and bottom, allowing the upper and lower clamping components to be driven synchronously by a single sliding component. This simplifies the internal layout and saves installation space.

[0032] like Figures 5 to 7As shown, the follower fixing assembly 4 also includes two fixing structures 407 arranged vertically. The fixing structure 407 includes a second transmission inclined surface 408 that is adapted to the first transmission inclined surface 405 arranged at the upper and lower ends of the transmission block 402. A fixing rod 409 is fixedly connected to the second transmission inclined surface 408. An arc-shaped fixing plate 410 is installed on the fixing rod 409. An expansion cavity 406 is fixedly connected to the upper surface of the first arc-shaped positioning plate 202 and the second arc-shaped positioning plate 203. The upper fixing structure 407 slides in the expansion cavity 406, and the lower fixing structure 407 slides in the receiving cavity 401.

[0033] The inclined plane extrusion drive drives the upper and lower arc-shaped fixing plates 410 to simultaneously adhere to the outer wall of the pipe pile. When the positioning ring closes, the upper and lower clamping blocks simultaneously press the pile body. The force is evenly distributed around the pipe wall, and there will be no situation where one side is pressed and the other side is suspended and tilted. The pure mechanical inclined plane linkage is adopted, and there is no need for electrical control signals to trigger the clamping action. The pipe pile is automatically clamped when it is positioned, which simplifies the on-site operation steps.

[0034] like Figures 8 to 9 As shown, the welding structure 5 includes a second mounting plate 501, a dual-axis motor 301 mounted on the second mounting plate 501, a first motor 502 and a second centering structure 503 identical to the synchronous drive centering assembly 3 on the second mounting plate 501, the second centering structure 503 being driven and connected by the first motor 502, and an arc-shaped placement plate 504 and an arc-shaped placement plate 505 at the other end of the second mounting plate 501, an arc-shaped welding plate 506 and an arc-shaped welding plate 507 respectively fixedly connected to the arc-shaped placement plate 504 and the arc-shaped placement plate 505.

[0035] The mounting plate 501 of welding structure 5 directly supports the dual-axis motor 301, eliminating the need for a separate motor support base and resulting in higher overall integration. The motor 502 drives the centering structure 503, which is the same as the centering structure 306, and can control the opening and closing of the two semi-arc welding plates. During pile installation, the track opens to avoid the pipe pile, and closes again before welding to form a complete circular track, eliminating the need for overall disassembly and assembly of welding components.

[0036] like Figures 8 to 10 As shown, arc-shaped welding plate 506 and arc-shaped welding plate 507 are provided with arc-shaped racks 508. The welding structure 5 also includes a sliding block 509. A motor 510 is provided on the side of the sliding block 509. The drive shaft of the motor 510 is rotatably connected inside the sliding block 509. A gear 511 is sleeved on the drive shaft of the motor 510. The gear 511 meshes with the arc-shaped rack 508. A welding torch 512 is mounted on the upper surface of the sliding block 509 through a mounting base.

[0037] The arc-shaped rack 508 completely encircles the weld seam, and the gear 511 meshes to drive the sliding block 509 to move in a uniform circular motion. The welding torch 512 moves at a uniform speed, ensuring consistent circumferential weld depth in the pipe pile and preventing local weld seams from being too thin or too thick. The motor 510 independently controls the circumferential movement speed of the welding torch 512, which can be flexibly adjusted according to different pile diameters and welding materials.

[0038] like Figures 10 to 12 As shown, the welding slag recovery assembly 6 includes a sliding plate 601, which is slidably connected to a sliding block 509. A toothed plate 602 is provided at the bottom of the sliding plate 601. A motor 603 is installed on the sliding block 509. The drive shaft of the motor 603 is rotatably connected inside the sliding block 509. A gear 604 is sleeved on the drive shaft of the motor 603. The gear 604 is meshing with the toothed plate 602. An isolation plate 605 is sleeved on the welding end of the welding torch 512. A collection groove 606 is installed inside the arc-shaped welding plate 506 and the arc-shaped welding plate 507. An elastic protrusion 607 is provided inside the collection groove 606.

[0039] Motor 603 drives the sliding plate 601 to extend and retract back and forth. During welding, the sliding plate 601 extends directly below the weld seam. The isolation plate 605 blocks the high-temperature molten spatter, and the welding slag falls directly into the collection tank 606. The elastic protrusion 607 on the inner side of the collection tank 606 fits against the surface of the pile body to prevent the welding slag from falling into the lower positioning structure 2 below. The recovery component and the sliding block 509 move synchronously around the pipe pile, blocking and collecting slag in real time throughout the process. There is no need to stop the machine midway to manually clean the track, which shortens the welding time of a single pipe pile and reduces the safety risk of high-temperature spatter burning construction workers.

[0040] The working principle of the technical solution provided by this invention is as follows: During the construction preparation stage, the lower precast piles that need to be connected are first hoisted into the inner side of the lower positioning structure 2, and the upper precast piles are placed inside the upper positioning structure 1. In the initial state of the equipment, the arc-shaped positioning plates on the upper and lower sides and the split arc-shaped welding plate in the middle are fully opened, leaving enough space to facilitate the hoisting and positioning of the piles without structural interference.

[0041] After the pile is placed, the equipment is started, and the vertical dual-axis motor 301 inside the centering component 3 is driven to start working. The upper and lower output shafts of the motor rotate synchronously, driving the two rotating shafts 302 on both sides and the gear 303 fixed on the rotating shaft 302 to rotate synchronously. The gear 303 and the toothed plate 305 assembled inside the slide groove 304 form a gear and rack meshing pair, which synchronously pulls the upper and lower toothed plates 305 to move horizontally towards the pipe pile. The toothed plates 305 synchronously drive the centering rod 308 to slide inside the slip ring 307. The centering rod 308 pulls the left and right arc-shaped positioning plates inward through the hinge seat 309 and the two side hinge rods 310, so that the upper and lower positioning structures 2 move towards the two precast piles synchronously, without one side closing first and the other side lagging behind.

[0042] In the initial state without clamping the pipe pile, the transmission block 402 falls naturally under its own weight. The sliding shaft 403 on the side of the transmission block 402 abuts against the top of the sliding groove 404. At this time, the transmission inclined surface 405 on the upper and lower parts of the transmission block 402 is pressed against the transmission inclined surface 408 on the upper and lower fixed structures 407. Under the action of the component force of the inclined surface, the lower fixed structure 407 extends outward, while the upper fixed structure 407 is pushed inward by the inclined surface and completely contained inside the expansion cavity 406, without protruding and interfering with the placement of the precast pile.

[0043] When the synchronous drive centering component 3 drives the arc-shaped positioning plate to retract towards the outer wall of the precast pile, the pre-extended lower arc-shaped fixing plate 410 will first adhere to the outer wall of the pipe pile. The pipe pile will generate a reverse pushing force on the lower fixing structure 407, which will then be transmitted to the lower transmission inclined surface 408 through the fixing rod 409, pressing the transmission block 402 inward. The transmission block 402 slides vertically upward under the limiting constraint of the sliding shaft 403 and the second sliding groove 404. The transmission inclined surface 405 on the upper side of the transmission block 402 simultaneously applies an outward pushing force to the transmission inclined surface 408 on the upper fixing structure 407, pushing the upper fixing structure 407, which was originally contained in the expansion cavity 406, outward.

[0044] As the arc-shaped positioning plate continues to move inward, the upper and lower sets of arc-shaped fixing plates 410 simultaneously adhere to the outer periphery of the precast pile. Relying on the bidirectional extrusion force generated by the cooperation of the two sets of inclined surfaces, they jointly hold the pipe pile, achieving uniform clamping and fixing of the pile body around its perimeter. After welding is completed, the arc-shaped positioning plate opens outward, the pushing force of the pipe pile on the lower fixing plate disappears, the transmission block 402 falls back to the top along the slide groove 404 under gravity, the upper fixing structure 407 retracts back into the expansion cavity 406, and the component returns to its initial feeding state.

[0045] When the upper and lower positioning structures 2 are fully retracted and the two arc-shaped fixing plates 410 evenly hold the two precast piles, the infrared emitting device 7 arranged on the top surface of the lower arc-shaped positioning plate continuously emits infrared light, and the infrared receiving device 8 matched on the bottom surface of the upper arc-shaped positioning plate synchronously receives the beam. Only when the central axes of the upper and lower precast piles are completely aligned and all infrared light paths can be conducted without obstruction, will the electrical control system determine that the pile body is aligned and unlock the starting permission of the welding mechanism. If the two piles are offset or the infrared beam is blocked by the pile body, the welding-related components will remain locked and welding cannot be started, thus avoiding defects such as slag inclusion and incomplete penetration caused by misaligned welding from the source.

[0046] After the infrared light path verification is qualified, the control system starts the motor 502 in the welding structure 5. The motor 502 drives the centering structure 503 to operate, which drives the arc-shaped placement plate and the arc-shaped welding plate to close towards the pipe pile joint gap. The two half-arc welding plates are spliced ​​to form a complete circular walking track with an arc-shaped rack 508, providing a complete guide reference for the circular movement of the welding torch 512.

[0047] After the annular track is closed, the second motor 510 on the side of the sliding block 509 starts. The output shaft of the second motor 510 drives the second gear 511 to rotate continuously. The second gear 511 meshes with the arc-shaped rack 508 to drive the sliding block 509 and the welding torch 512 installed on the top of the sliding block 509 to rotate around the precast pile at a constant speed along the annular track. The welding torch 512, which moves at a constant speed, continuously welds the annular joint of the pipe pile.

[0048] Throughout the welding process of the welding torch 512, the slag recovery component 6 mounted on the sliding block 509 moves synchronously with the welding torch 512 in a circular motion. The motor 3 603 drives the gear 3 604 to mesh with the toothed plate 2 602, pushing the slide plate 601 forward to directly below the weld. The isolation plate 605 at the front end of the slide plate 601 blocks the high-temperature spatter generated by welding. The molten slag falls along the isolation plate 605 into the collection groove 606 inside the arc-shaped welding plate. The elastic protrusions 607 arranged in the groove fit against the pile body, preventing fine slag from falling from the gap onto the rack and positioning structure. There is no need to stop the machine to clean the track during the entire process.

[0049] After the entire circumferential weld is completed, the equipment automatically reverses and resets. First, the output of the welding torch 512 is cut off, and motor 3 603 reverses and retracts the slag-blocking slide plate 601. Then, motor 2 510 rotates in reverse, driving the sliding block 509 back to the initial avoidance position. Motor 1 502 reverses, and the two semi-arc welding plates open outward, releasing the wrapping around the pile body. Finally, the dual-axis motor 301 rotates in reverse, pulling the upper and lower arc positioning plates outward. The inclined clamping structure simultaneously releases the precast pile. At this time, the welded precast pile can be lifted off the equipment, and the entire precast pile butt welding process is completed, waiting for the next set of piles to be welded to be positioned for the cycle operation.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A precast pile welding device based on building construction, characterized in that, It includes an upper positioning structure (1) and a lower positioning structure (2), a synchronous drive centering component (3) is provided between the upper positioning structure (1) and the lower positioning structure (2), a follow-up fixing component (4) is provided on the upper positioning structure (1) and the lower positioning structure (2), a welding structure (5) is also provided between the upper positioning structure (1) and the lower positioning structure (2), and a welding slag recovery component (6) is provided on the welding structure (5). The synchronous drive centering component (3) is set at the non-welded end of the welded structure (5). The synchronous drive centering component (3) is used to drive the upper positioning structure (1) and the lower positioning structure (2) to open and close synchronously and horizontally, so as to eliminate the axial misalignment deviation caused by the step-by-step clamping of the upper and lower pipe piles. The following fixing component (4) is arranged in several groups along the circumference of the upper positioning structure (1) and the lower positioning structure (2). The following fixing component (4) is used to trigger the clamping action by relying on the closing displacement of the positioning mechanism to avoid the different clamping sequence of the upper and lower pipe piles and the tilting of one side under pressure. The slag recovery component (6) is used to move synchronously around the welding torch (512) to isolate and collect welding spatter in real time, and prevent the welding torch (512) from deviating due to the accumulation of welding slag on the rack track.

2. The precast pile welding device based on building construction according to claim 1, characterized in that, The upper positioning structure (1) and the lower positioning structure (2) are arranged in a mirror image with the circular track of the welded structure (5) as the reference. The lower positioning structure (2) includes a mounting plate (201). The end of the mounting plate (201) is provided with an arc-shaped positioning plate (202) and an arc-shaped positioning plate (203). The mounting plate (201), the arc-shaped positioning plate (202) and the arc-shaped positioning plate (203) are hinged together by a hinge shaft (204).

3. The precast pile welding device based on building construction according to claim 2, characterized in that, The synchronous drive centering component (3) includes a vertically arranged dual-axis motor (301). The two output ends of the dual-axis motor (301) drive the upper positioning structure (1) and the lower positioning structure (2) to work synchronously. Both output ends of the dual-axis motor (301) are driven to connect to a rotating shaft (302). A gear (303) is sleeved on the rotating shaft (302). A sliding groove (304) is provided on the mounting plate (201). A toothed plate (305) is slidably connected in the sliding groove (304). The gear (303) and the toothed plate (305) are meshed.

4. The precast pile welding device based on building construction according to claim 3, characterized in that, The synchronous drive centering assembly (3) further includes a centering structure (306), which includes a slip ring (307) mounted on a mounting plate (201). A centering rod (308) is slidably connected inside the slip ring (307). One end of the centering rod (308) is fixedly connected to a toothed plate (305), and a hinge seat (309) is sleeved on the other end of the centering rod (308). Two hinge rods (310) are hingedly connected to both sides of the hinge seat (309). The other end of the hinge rod (310) is hinged to two hinge seats (311). The two hinge seats (311) are fixedly installed on the arc-shaped positioning plate (202) and the arc-shaped positioning plate (203) respectively. An infrared emitting device (7) is installed on the upper surface of the arc-shaped positioning plate (202) and the arc-shaped positioning plate (203) in the lower positioning structure (2). An infrared receiving device (8) is installed on the lower surface of the arc-shaped positioning plate (202) and the arc-shaped positioning plate (203) in the upper positioning structure (1).

5. The precast pile welding device based on building construction according to claim 4, characterized in that, The follower fixing component (4) includes a receiving cavity (401) opened on the arc-shaped positioning plate one (202) and the arc-shaped positioning plate two (203). A transmission block (402) is provided in the receiving cavity (401). A sliding shaft (403) is fixedly connected to the transmission block (402). A sliding groove two (404) is fixedly connected in the receiving cavity (401). The sliding shaft (403) is slidably connected to the sliding groove two (404). A transmission inclined surface one (405) is provided at both the upper and lower ends of the transmission block (402).

6. The precast pile welding device based on building construction according to claim 5, characterized in that, The follow-up fixing assembly (4) also includes two fixing structures (407) arranged vertically. The fixing structure (407) includes a second transmission inclined surface (408) that is adapted to the first transmission inclined surface (405) arranged at the upper and lower ends of the transmission block (402). A fixing rod (409) is fixedly connected to the second transmission inclined surface (408). An arc-shaped fixing plate (410) is installed on the fixing rod (409). An expansion cavity (406) is fixedly connected to the upper surface of the first arc-shaped positioning plate (202) and the second arc-shaped positioning plate (203). The upper fixing structure (407) slides in the expansion cavity (406), and the lower fixing structure (407) slides in the receiving cavity (401).

7. The precast pile welding device based on building construction according to claim 6, characterized in that, The welding structure (5) includes a second mounting plate (501), the dual-axis motor (301) is mounted on the second mounting plate (501), the second mounting plate (501) is provided with a first motor (502) and a second centering structure (503) that is the same as the synchronous drive centering component (3), the second centering structure (503) is driven and connected by the first motor (502), the other end of the second mounting plate (501) is provided with an arc-shaped placement plate (504) and an arc-shaped placement plate (505), and an arc-shaped welding plate (506) and an arc-shaped welding plate (507) are respectively fixedly connected to the arc-shaped placement plate (504) and the arc-shaped placement plate (505).

8. The precast pile welding device based on building construction according to claim 7, characterized in that, Arc-shaped welding plate one (506) and arc-shaped welding plate two (507) are provided with arc-shaped racks (508). The welding structure (5) also includes a sliding block (509). A motor two (510) is provided on the side of the sliding block (509). The drive shaft of the motor two (510) is rotatably connected inside the sliding block (509). A gear two (511) is sleeved on the drive shaft of the motor two (510). The gear two (511) meshes with the arc-shaped rack (508). A welding torch (512) is mounted on the upper surface of the sliding block (509) through a mounting seat.

9. The precast pile welding device based on building construction according to claim 8, characterized in that, The welding slag recycling component (6) includes a sliding plate (601), which is slidably connected to a sliding block (509). A toothed plate (602) is provided at the bottom of the sliding plate (601). A motor (603) is installed on the sliding block (509). The drive shaft of the motor (603) is rotatably connected inside the sliding block (509). A gear (604) is sleeved on the drive shaft of the motor (603). The gear (604) meshes with the toothed plate (602).

10. The precast pile welding device based on building construction according to claim 9, characterized in that, The welding end of the welding torch (512) is fitted with an isolation plate (605), and the inner sides of the first arc welding plate (506) and the second arc welding plate (507) are equipped with a collection groove (606), and the inner side of the collection groove (606) is provided with an elastic protrusion (607).

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