Laser welding device for water conservancy gate machining

Abstract

The invention relates to the technical field of welding, in particular to a laser welding device for water conservancy gate machining, which comprises a fixed table, two symmetrical lifting portal frames are fixedly connected to the upper end of the fixed table, and output shafts of the two lifting portal frames are jointly and fixedly connected with a top plate. The lower end of the top plate is provided with a movable cleaning mechanism used for positioning the position of a radial gate edge beam, the inner side of the movable cleaning mechanism is provided with a welding mechanism used for welding the edge beam, and the edge of a gate is preliminarily cleaned through a polishing shaft of a cleaning assembly; a third motor and a fourth motor of the polishing assembly drive a flexible dull polish rod to pound weld burrs and oxide layers in a targeted mode, impurities of base metal are removed, and welding defects are reduced; an argon protection atmosphere is formed through an argon tank, a hose and an electromagnetic valve jet head, a rubber roller drives a feeding pipe and an L-shaped pipe to periodically supply scaling powder, and the purity and bonding strength of a welding seam are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of welding technology, specifically to a laser welding device for processing hydraulic gates. Background Technology

[0002] In water conservancy projects, the side beam of an arc-shaped gate is a core load-bearing component. The welding quality between the side beam and the main body directly affects the gate's strength and lifespan. Furthermore, because the side beam has a right-angled support and an arc-shaped transition structure, stringent requirements are placed on welding precision and weld strength. With the increasing demand for automation and intelligence in the intelligent manufacturing equipment industry, laser welding technology has become a preferred choice due to its advantages of low deformation and high strength. However, current intelligent welding systems for arc-shaped gate side beams still have significant shortcomings.

[0003] Existing laser welding equipment is mostly adapted to linear trajectories. Arc positioning relies on complex algorithms or simple guide rails, which are prone to deviations due to arc edge tolerances and lack anti-deviation constraints, requiring manual calibration. The cleaning component angle is fixed and cannot be adjusted with the arc edge curvature. Burr residue can easily lead to welding defects, and the cleaning and movement power are independent, resulting in poor coordination. The cleaning, welding, and grinding processes are scattered, requiring multiple transfers and secondary positioning, which is time-consuming, prone to impacts, and does not meet the requirements of intelligent manufacturing integration. The welding head angle adjustment, argon gas, and flux supply are difficult to adapt to the arc weld in real time, and there is no quality closed loop of "pre-treatment, welding, and grinding", resulting in high rework costs. Therefore, we propose a laser welding device for hydraulic gate processing. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a laser welding device for processing hydraulic gates.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a laser welding device for processing hydraulic gates, including a fixed platform, two symmetrical lifting gantry frames are fixedly connected to the upper end of the fixed platform, the output shafts of the two lifting gantry frames are fixedly connected to a top plate, a moving cleaning mechanism for positioning the side beam of the arc-shaped gate is provided at the lower end of the top plate, and a welding mechanism for welding the side beam is provided on the inner side of the moving cleaning mechanism.

[0006] Preferably, the mobile cleaning mechanism includes a mobile component for mobile positioning, and the mobile cleaning mechanism further includes a cleaning component for grinding burrs on the edge of the gate.

[0007] Preferably, the moving component includes two I-shaped arc plates, the upper end of which is fixedly connected to a top plate, a moving bracket slidably connected to the front end of each I-shaped arc plate, a spur gear rotatably connected to the inner side of the moving bracket, a first motor mounted on one side of the moving bracket, the output shaft of the first motor being fixedly connected to the spur gear, an arc-shaped rack meshing with the outer side of the spur gear, and the rear end of the arc-shaped rack being fixedly connected to the I-shaped arc plate.

[0008] Preferably, the cleaning assembly includes a first bevel gear rotatably connected to the other side of the movable bracket. One end of the first bevel gear is fixedly connected to a spur gear. Two symmetrical second bevel gears are meshed with the outer side of the movable bracket. A grinding shaft is fixedly connected to the close ends of the two second bevel gears, and a slide rod is slidably connected to the distant ends of the two second bevel gears. A support plate is rotatably connected to the other end of the slide rod via a rotating shaft. One side of the support plate is fixedly connected to the movable bracket, and the grinding shaft passes through the outer side of the slide rod.

[0009] Preferably, two limiting strips are fixedly connected to the outer side of the slide rod, and a first mounting plate is fixedly connected to the outer side of the slide rod. Two first electric telescopic rods are installed at the other end of the first mounting plate, and the output shafts of the two first electric telescopic rods are fixedly connected to the second bevel gear.

[0010] Preferably, the welding mechanism includes a positioning component for welding the side beam, and the welding mechanism also includes a grinding component for cleaning the weld.

[0011] Preferably, the positioning component includes a second mounting plate fixedly connected to the movable bracket. A second motor is mounted on the upper end of the second mounting plate. A fixed rotating shaft is fixedly connected to the output shaft of the second motor. Two sleeves are fixedly connected to the outer side of the fixed rotating shaft. A second electric telescopic rod is provided on the outer side of the sleeves. A movable block is fixedly connected to the output shaft of the second electric telescopic rod. A welding head is provided at the close end of the two movable blocks. A rubber roller is rotatably connected to the far end of the two movable blocks. Two clamping plates are fixedly connected to the outer side of the housing of the two second electric telescopic rods. An argon gas cylinder is fixedly connected to the close side of the two clamping plates. Two flexible hoses are fixedly connected to the T-shaped outlet of the argon gas cylinder. A solenoid valve is provided on the outer side of the flexible hose. A solenoid valve nozzle is fixedly connected to the other end of the flexible hose. The solenoid valve nozzle is located on the inner side of the movable block.

[0012] Preferably, a rotating plate is fixedly connected to the outer side of the fixed rotating shaft, and two sets of symmetrical electric clamps are fixedly connected to one side of the rotating plate. A baffle is fixedly connected to the adjacent ends of the electric clamps. A limit rod is slidably connected to the inner side of the baffle. A grinding disc is fixedly connected to one end of the limit rod. The grinding disc has a U-shaped design and is slidably connected to the inner side of the electric clamp. A spring is provided on the outer side of the limit rod. One end of the spring is fixedly connected to the grinding disc, and the other end of the spring is fixedly connected to the baffle.

[0013] Preferably, a feed pipe is rotatably connected to the inner side of one of the two rubber rollers, which is closer to the upper one. The upper end of the feed pipe is fixedly connected to a flux liquid tank through a pipe. A discharge port is opened on the outer side of the feed pipe. An L-shaped pipe is rotatably connected to the outer side of the feed pipe. The L-shaped pipe is fixedly connected to the inner side of the moving block.

[0014] Preferably, the polishing assembly includes two third motors disposed on both sides of the moving block. The output shafts of the third motors are fixedly connected to third mounting plates. A fourth motor is disposed at the far end of each of the two third mounting plates. Two symmetrical sprockets are disposed at the near end of each of the two third mounting plates. The output shaft of the fourth motor is fixedly connected to one of the two sprockets. A synchronous belt is rotatably connected to the outer sides of the two sprockets. Multiple flexible abrasive rods are fixedly connected to the outer side of the synchronous belt.

[0015] Compared with the prior art, the present invention provides a laser welding device for processing hydraulic gates, which has the following beneficial effects:

[0016] 1. By sliding the I-shaped arc plate and the moving bracket together, combined with the meshing transmission of spur gears, arc racks and the first motor, the power is precisely converted into the arc trajectory movement of the moving bracket, avoiding movement deviation and laying the foundation for the working trajectory; by hinged between the slide rod and the support plate to adapt to the arc edge angle, the first electric telescopic rod pushes the second bevel gear to slide along the slide rod, and the limiting strip ensures that the two rotate synchronously, so that the grinding shaft always fits against the arc edge for grinding, without structural skew; the clamping plate ensures that the second electric telescopic rod is horizontally aligned, and the second motor drives the fixed rotating shaft to synchronously drive the rotating plate and the welding head, and the rubber roller assists in limiting the position, achieving precise positioning in both angle and radial dimensions.

[0017] 2. The gate edge is initially cleaned by the grinding shaft of the cleaning component. The third and fourth motors of the grinding component drive the flexible abrasive rod to specifically grind the weld burrs and oxide layer, remove impurities from the base material, and reduce welding defects. An argon protective atmosphere is formed by the argon cylinder, hose, and solenoid valve nozzle. The rubber roller drives the feed pipe and L-shaped pipe to periodically supply flux to ensure the purity and bonding strength of the weld. The grinding disc is pushed by the spring to fit the side beam arc plate along the limit pressure rod. During welding, it is ground synchronously with the moving block, eliminating the need for subsequent processes, ensuring the flatness of the side beam, and reducing stress concentration.

[0018] 3. The first motor synchronously drives the "sliding of the moving bracket" and the "grinding shaft cleaning", while the second motor synchronously completes the "side beam angle adjustment" and "welding head alignment", reducing power source and structural redundancy and shortening the time. The moving cleaning mechanism and the welding mechanism are seamlessly connected to complete the entire process of "edge cleaning, weld pretreatment, welding and grinding", eliminating the need for workpiece transfer and secondary positioning, thus shortening the operation cycle. The welding mechanism integrates the functions of "side beam clamping, laser welding, protection supply, welding flux supply and weld cleaning", reducing the complexity of operation and reducing human error. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the overall structure of the mobile cleaning mechanism and welding mechanism of the present invention;

[0022] Figure 4 This is a cross-sectional schematic diagram of the overall structure of the mobile cleaning mechanism of the present invention;

[0023] Figure 5 This is a cross-sectional schematic diagram of a portion of the mobile cleaning mechanism of the present invention;

[0024] Figure 6 This is a schematic diagram of the overall structure of the welding mechanism of the present invention;

[0025] Figure 7 This is a schematic cross-sectional view of a portion of the welding mechanism of the present invention. Figure 1 ;

[0026] Figure 8 This is a schematic cross-sectional view of a portion of the welding mechanism of the present invention. Figure 2 ;

[0027] Figure 9 This is a schematic cross-sectional view of a portion of the welding mechanism of the present invention. Figure 3 ;

[0028] Figure 10 This is a schematic cross-sectional view of a portion of the welding mechanism of the present invention. Figure 4 .

[0029] In the diagram: 1. Fixed platform; 2. Lifting gantry frame; 3. Top plate; 4. Mobile cleaning mechanism; 41. Moving component; 411. I-shaped arc plate; 412. Moving bracket; 413. Spur gear; 414. First motor; 415. Arc rack; 42. Cleaning component; 421. First bevel gear; 422. Second bevel gear; 423. Grinding shaft; 424. Slide rod; 425. Limiting strip; 426. Support plate; 427. First mounting plate; 428. First electric telescopic rod; 5. Welding mechanism; 51. Positioning component; 511. Second mounting plate; 512. Second motor; 513. Fixed rotating shaft; 514. 515. Sleeve; 516. Second electric telescopic rod; 517. Moving block; 518. Welding head; 519. Rubber roller; 510. Clamping plate; 5111. Argon cylinder; 5111. Hose; 5112. Solenoid valve jet head; 5113. Rotating plate; 5114. Electric clamp; 5115. Baffle; 5116. Limiting rod; 5117. Grinding disc; 5118. Spring; 5119. Feed pipe; 5120. L-shaped pipe; 52. Grinding assembly; 521. Third motor; 522. Third mounting plate; 523. Sprocket; 524. Fourth motor; 525. Synchronous belt; 526. Flexible abrasive rod. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0031] The following electrical components are all electrically connected via an external PLC controller.

[0032] Please see Figures 1-10 A laser welding device for processing hydraulic gates includes a fixed platform 1. The upper end of the fixed platform 1 is fixedly connected to two symmetrical lifting gantry frames 2. The output shafts of the two lifting gantry frames 2 are fixedly connected to a top plate 3. The lower end of the top plate 3 is provided with a moving cleaning mechanism 4 for positioning the side beam of the arc-shaped gate. The inner side of the moving cleaning mechanism 4 is provided with a welding mechanism 5 for welding the side beam.

[0033] In this embodiment, the mobile cleaning mechanism 4 includes a mobile component 41 for mobile positioning, and the mobile cleaning mechanism 4 also includes a cleaning component 42 for grinding burrs on the edge of the gate.

[0034] Specifically, the moving component 41 is used to drive the entire mechanism to move and position precisely along the side of the arc-shaped gate, ensuring the accuracy of the trajectory for welding and cleaning operations; while the cleaning component 42 simultaneously grinds the burrs on the edge of the gate during the movement, providing a smooth surface for subsequent welding.

[0035] In this embodiment, the moving component 41 includes two I-shaped arc plates 411. The upper end of the I-shaped arc plate 411 is fixedly connected to the top plate 3. The front end of the I-shaped arc plate 411 is slidably connected to a moving bracket 412. The inner side of the moving bracket 412 is rotatably connected to a spur gear 413. A first motor 414 is installed on one side of the moving bracket 412. The output shaft of the first motor 414 is fixedly connected to the spur gear 413. The outer side of the spur gear 413 is meshed with an arc-shaped rack 415. The rear end of the arc-shaped rack 415 is fixedly connected to the I-shaped arc plate 411.

[0036] Specifically, the I-shaped arc plate 411 serves as an arc-shaped track, limiting the sliding trajectory of the moving bracket 412 and preventing it from falling off through the "I-shaped" structure; the moving bracket 412 carries the cleaning component 42 and the welding mechanism 5, enabling overall movement; the spur gear 413 meshes with the arc-shaped rack 415, converting the power of the first motor 414 into the arc-shaped movement power of the moving bracket 412; the first motor 414 provides a drive source for the moving component 41, ensuring movement accuracy and stability.

[0037] In this embodiment, the cleaning component 42 includes a first bevel gear 421 rotatably connected to the other side of the movable bracket 412. One end of the first bevel gear 421 is fixedly connected to a spur gear 413. Two symmetrical second bevel gears 422 are meshed on the outer side of the movable bracket 412. A grinding shaft 423 is fixedly connected to the end of each of the two second bevel gears 422 that is close to each other. A slide rod 424 is slidably connected to the end of each of the two second bevel gears 422 that is far apart from each other. A support plate 426 is rotatably connected to the other end of the slide rod 424 through a rotating shaft. One side of the support plate 426 is fixedly connected to the movable bracket 412. The grinding shaft 423 passes through the outer side of the slide rod 424.

[0038] Specifically, the first bevel gear 421 transmits the power of the spur gear 413 to the second bevel gear 422, realizing the conversion of power direction; the second bevel gear 422 drives the grinding shaft 423 to rotate, and performs burr grinding on the side of the gate; the grinding shaft 423 directly contacts the edge of the gate and removes burrs by rotating; the slide rod 424 provides axial sliding support for the second bevel gear 422, adapting to the radial curvature change of the gate's arc edge; the support plate 426 supports the slide rod 424 through the rotating shaft, allowing the slide rod 424 to swing with the change of arc edge angle, ensuring the stability of the grinding shaft 423's posture.

[0039] In this embodiment, two limiting strips 425 are fixedly connected to the outer side of the slide rod 424, and a first mounting plate 427 is fixedly connected to the outer side of the slide rod 424. Two first electric telescopic rods 428 are installed at the other end of the first mounting plate 427, and the output shafts of the two first electric telescopic rods 428 are fixedly connected to the second bevel gear 422.

[0040] Specifically, the limiting strip 425 is embedded in the corresponding groove of the second bevel gear 422 to ensure that the second bevel gear 422 rotates synchronously with the slide rod 424, avoiding skew caused by independent rotation; the first mounting plate 427 fixes the first electric telescopic rod 428 and provides it with support; the first electric telescopic rod 428 pushes the second bevel gear 422 to move axially along the slide rod 424, maintaining meshing with the first bevel gear 421 while adapting the grinding shaft 423 to the radial curvature change of the gate arc edge.

[0041] In this embodiment, the welding mechanism 5 includes a positioning component 51 for welding the side beam, and the welding mechanism 5 also includes a grinding component 52 for cleaning the weld.

[0042] Specifically, the positioning component 51 is responsible for clamping the side beam, adjusting the angle and position of the welding head 517, and supplying welding protection (argon gas) and flux to achieve precise welding between the side beam and the gate; the grinding component 52 cleans the burrs and oxide layer in the weld area before welding to improve welding accuracy and quality.

[0043] In this embodiment, the positioning component 51 includes a second mounting plate 511 fixedly connected to the movable bracket 412. A second motor 512 is mounted on the upper end of the second mounting plate 511. The output shaft of the second motor 512 is fixedly connected to a fixed rotating shaft 513. Two sleeves 514 are fixedly connected to the outer side of the fixed rotating shaft 513. A second electric telescopic rod 515 is provided on the outer side of the sleeves 514. A moving block 516 is fixedly connected to the output shaft of the second electric telescopic rod 515. A welding head 517 is provided at the adjacent ends of the two moving blocks 516. Each movable block 516 has a rubber roller 518 rotatably connected to one end of each other. Two clamping plates 519 are fixedly connected to the outer side of the housing of the two second electric telescopic rods 515. Argon cylinder 5110 is fixedly connected to the side of the two clamping plates 519 that is close to each other. Two hoses 5111 are fixedly connected to the T-shaped tube at the output port of argon cylinder 5110. A solenoid valve is provided on the outside of the hose 5111. A solenoid valve nozzle 5112 is fixedly connected to the other end of the hose 5111. The solenoid valve nozzle 5112 is located on the inside of the movable block 516.

[0044] Specifically, the second mounting plate 511 fixes the second motor 512 and related components, providing a mounting basis for the positioning component 51; the second motor 512 drives the fixed rotating shaft 513 to rotate, realizing the angle adjustment of the welding head 517 and the side beam; the fixed rotating shaft 513 drives the sleeve 514 and the rotating plate 5113 to rotate synchronously, transmitting the power of angle adjustment; the sleeve 514 connects the fixed rotating shaft 513 and the second electric telescopic rod 515 to ensure their synchronous rotation; the second electric telescopic rod 515 pushes the moving block 516 through expansion and contraction to adjust the radial position of the welding head 517 so that it fits the weld seam; the moving block 516 carries components such as the welding head 517 and the rubber roller 518 to achieve the position adaptation of the welding head 517; the welding head 517 emits a laser beam to complete the welding of the side beam and the gate; the rubber roller 518 rotates self-driven when contacting the surface of the gate, reducing the resistance when the moving block 516 moves; the clamping plate 519 fixes the argon gas cylinder 5110, and at the same time ensures that the two second electric telescopic rods 515 are horizontally aligned to ensure the consistency of the welding track; the argon gas cylinder 5110 stores argon gas to provide a shielding gas for welding; the hose 5111 conveys argon gas, and the solenoid valve controls the on and off of the argon gas; the solenoid valve jet head 5112 sprays out argon gas to remove grinding particles and form a shielding atmosphere, reducing welding oxidation.

[0045] In this embodiment, a rotating plate 5113 is fixedly connected to the outside of the fixed rotating shaft 513. On one side of the rotating plate 5113, two groups of symmetrically arranged electric clamps 5114 are fixedly connected. The mutually approaching ends of the electric clamps 5114 are jointly fixedly connected with a baffle 5115. A limiting pressure rod 5116 is slidably connected to the inside of the baffle 5115. One end of the limiting pressure rod 5116 is fixedly connected with a grinding sheet 5117. The grinding sheet 5117 is designed in a Chinese character "zhong" shape. The grinding sheet 5117 is slidably connected to the inside of the electric clamp 5114. A spring 5118 is arranged on the outside of the limiting pressure rod 5116. One end of the spring 5118 is fixedly connected with the grinding sheet 5117, and the other end of the spring 5118 is fixedly connected with the baffle 5115.

[0046] Specifically, the rotating plate 5113 drives the electric clamps 5114 to rotate with the fixed rotating shaft 513 to realize the angle adjustment of the side beam; the electric clamps 5114 clamp the side beam plate through mechanical claws to initially align it with the welding position; the baffle 5115 supports the limiting pressure rod 5116 and the spring 5118, providing a mounting basis; the limiting pressure rod 5116 restricts the moving direction of the grinding sheet 5117 to ensure its linear movement; the grinding sheet 5117 is designed in a Chinese character "zhong" shape to adapt to the arc plate structure of the side beam, and grinds the arc plate of the side beam during the welding process as the moving block 516 moves; the spring 5118 pushes the grinding sheet 5117 to closely fit the arc plate of the side beam through elastic reset to ensure the grinding effect.

[0047] In this embodiment, a feed pipe 5119 is rotatably connected to the inner side of one of the two rubber rollers 518 near the upper one. The upper end of the feed pipe 5119 is fixedly connected to a flux liquid tank through a pipe. A discharge port is opened on the outer side of the feed pipe 5119. An L-shaped pipe 5120 is rotatably connected to the outer side of the feed pipe 5119. The L-shaped pipe 5120 is fixedly connected to the inner side of the moving block 516.

[0048] Specifically, the feed pipe 5119 rotates synchronously with the rubber roller 518, conveying the flux in the flux tank to the discharge port; the discharge port cooperates with the L-shaped pipe 5120, periodically aligning and discharging the flux when the feed pipe 5119 rotates; the L-shaped pipe 5120 guides the flux to the weld seam, realizing flux pretreatment before welding; the flux tank provides flux, improving the wettability and strength of the weld.

[0049] In this embodiment, the polishing assembly 52 includes two third motors 521 disposed on both sides of the moving block 516. The output shafts of the third motors 521 are fixedly connected to third mounting plates 522. A fourth motor 524 is disposed at the far end of each of the two third mounting plates 522. Two symmetrical sprockets 523 are disposed at the near end of each of the two third mounting plates 522. The output shaft of the fourth motor 524 is fixedly connected to one of the two sprockets 523. A synchronous belt 525 is rotatably connected to the outer side of the two sprockets 523. A plurality of flexible abrasive rods 526 are fixedly connected to the outer side of the synchronous belt 525.

[0050] Specifically, the third motor 521 drives the third mounting plate 522 to rotate, adjusting the angle between the synchronous belt 525 and the weld seam so that it is parallel to the weld seam; the third mounting plate 522 carries components such as the sprocket 523 and the fourth motor 524; the sprocket 523 cooperates with the synchronous belt 525 to transmit the power of the fourth motor 524 to the cyclic motion of the synchronous belt 525; the fourth motor 524 provides power for the rotation of the synchronous belt 525; the synchronous belt 525 drives the flexible abrasive rod 526 to move, realizing continuous grinding of the weld seam area; the flexible abrasive rod 526 adapts to the irregular contour of the weld seam, specifically cleaning burrs and oxide layers, and improving welding accuracy.

[0051] Working principle: During use, the arc-shaped gate is hoisted to the fixed platform 1, and spatial positioning and rigid fixation are completed by the matching clamps on the platform to ensure no displacement during the welding process; the lifting gantry 2 is started, and its output shaft drives the top plate 3 to move downward, so that the moving cleaning mechanism 4 and the welding mechanism 5 are aligned with the side beams on both sides of the gate to be processed. The side beam plates are embedded into the electric clamps 5114 of the welding mechanism 5. The electric clamps 5114 hold and fix the side beam plates with mechanical claws, aligning them with the preset welding position of the gate body at the weld seam at the right angle fulcrum. The first motor 414 is started, and its output shaft drives the spur gear 413 to rotate; the spur gear 413 meshes with the arc rack 415 on the I-shaped arc plate 411, driving the moving bracket 412 to slide along the side of the gate along the arc trajectory. The I-shaped groove of the I-shaped arc plate 411 restricts the moving bracket 412 from falling off, ensuring the stability of the trajectory;

[0052] When the spur gear 413 rotates, the coaxially fixed first bevel gear 421 rotates synchronously. The first bevel gear 421 meshes with the second bevel gears 422 on both sides, driving the second bevel gears 422 and the connected grinding shaft 423 to rotate, thus grinding and cleaning the burrs on the side of the gate. During this process, the support plate 426 provides stable support for the slide rod 424 through the rotating shaft. The first electric telescopic rod 428 is activated, and its output shaft pushes the second bevel gear 422 to slide along the axial direction of the slide rod 424 to maintain its meshing with the first bevel gear 421, so that the grinding shaft 423 adapts to the radial curvature change of the gate's arc edge. At the same time, the limiting strip 425 on the outside of the slide rod 424 is embedded in the corresponding groove of the second bevel gear 422, ensuring that the second bevel gear 422 drives the slide rod 424 to rotate synchronously when it rotates. The slide rod 424 then drives the first mounting plate 427 to rotate, avoiding the skew caused by the second bevel gear 422 rotating alone, and ensuring the overall stability of the cleaning assembly 42.

[0053] When the movable bracket 412 drives the second mounting plate 511 to the designated welding position on the side of the gate, the second motor 512 is started. Its output shaft drives the rotating plate 5113 to rotate 135° through the fixed rotating shaft 513. The rotating plate 5113 drives the electric clamp 5114 to deflect synchronously, so that the clamped side beam is tightly attached to the gate body. At the same time, the fixed rotating shaft 513 drives the second electric telescopic rod 515 to rotate through the sleeve 514. The output shaft of the second electric telescopic rod 515 pushes the moving block 516 to move, so that the welding head 517 is precisely aligned with the right-angle fulcrum connecting the side beam and the gate. At this time, there is a weld to be welded on each side of the welding head 517.

[0054] The third motor 521 starts, and its output shaft drives the third mounting plate 522 to rotate and deflect, so that the synchronous belt 525 is parallel to the weld. The fourth motor 524 drives the sprocket 523 to rotate, and the synchronous belt 525 drives the flexible abrasive rod 526 on the outside to perform targeted grinding on the metal burrs and oxide layer in the weld area. The flexible abrasive rod 526 adapts to the irregular contour of the weld and improves the welding accuracy. After the pretreatment is completed, the third motor 521 rotates in the opposite direction, so that the third mounting plate 522 is reset to the initial position parallel to the second electric telescopic rod 515.

[0055] Before welding, the electric clamp 5114 is released from clamping the side beam. At this time, the compressed spring 5118 is elastically reset under the support of the baffle 5115. The spring force pushes the grinding disc 5117 to move linearly along the limit pressure rod 5116, so that the Chinese-shaped grinding disc 5117 fits tightly with the arc plate of the side beam, preparing for the subsequent grinding process. The solenoid valve is activated, and argon gas from the argon tank 5110 is delivered to the solenoid valve nozzle 5112 through the hose 5111. The ejected argon gas removes particulate impurities left from grinding and forms a protective atmosphere around the welding head 517 to reduce oxidation during welding. The second motor 512 is activated again, driving the fixed rotating shaft 513 to rotate, which in turn drives the second electric telescopic rod 515 to rotate clockwise. At the same time, the length of the output shaft of the second electric telescopic rod 515 is adjusted so that the welding head 517 is always in contact with one of the weld seams for welding. After completion, the shaft is reset, and the fixed rotating shaft 513 is controlled to rotate counterclockwise to complete the welding of the other weld seam simultaneously. The clamping plate 519 fixes the argon tank 5110 and ensures that the two second electric telescopic rods 515 are horizontally aligned to ensure that the welding trajectory is consistent. During the welding process, when the moving block 516 moves, it drives the grinding disc 5117 to contact the arc plate of the side beam for grinding.

[0056] During the welding process, when the moving block 516 moves, the rubber roller 518 contacts the gate surface and rotates, reducing the moving resistance. When the upper rubber roller 518 rotates, it drives the inner feed pipe 5119 to rotate synchronously. The discharge port of the feed pipe 5119 is periodically aligned with the lateral outlet of the L-shaped pipe 5120, and the flux in the flux tank is discharged through the discharge port. The flux flows along the weld seam, forming a pretreatment on the welding area and improving the welding effect.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser welding device for processing hydraulic gates, comprising a fixed platform (1), characterized in that: The upper end of the fixed platform (1) is fixedly connected to two symmetrical lifting gantry frames (2). The output shafts of the two lifting gantry frames (2) are fixedly connected to a top plate (3). The lower end of the top plate (3) is provided with a moving cleaning mechanism (4) for positioning the side beam of the arc gate. The inner side of the moving cleaning mechanism (4) is provided with a welding mechanism (5) for welding the side beam.

2. The laser welding device for processing hydraulic gates according to claim 1, characterized in that: The mobile cleaning mechanism (4) includes a mobile component (41) for mobile positioning, and the mobile cleaning mechanism (4) also includes a cleaning component (42) for grinding burrs on the edge of the gate.

3. The laser welding device for processing hydraulic gates according to claim 2, characterized in that: The moving component (41) includes two I-shaped arc plates (411). The upper end of the I-shaped arc plate (411) is fixedly connected to the top plate (3). The front end of the I-shaped arc plate (411) is slidably connected to a moving bracket (412). The inner side of the moving bracket (412) is rotatably connected to a spur gear (413). A first motor (414) is installed on one side of the moving bracket (412). The output shaft of the first motor (414) is fixedly connected to the spur gear (413). The outer side of the spur gear (413) is meshed with an arc-shaped rack (415). The rear end of the arc-shaped rack (415) is fixedly connected to the I-shaped arc plate (411).

4. The laser welding device for processing hydraulic gates according to claim 2, characterized in that: The cleaning assembly (42) includes a first bevel gear (421) rotatably connected to the other side of the movable bracket (412). One end of the first bevel gear (421) is fixedly connected to a spur gear (413). Two symmetrical second bevel gears (422) are meshed on the outer side of the movable bracket (412). A grinding shaft (423) is fixedly connected to the close end of each of the two second bevel gears (422). A slide rod (424) is slidably connected to the far end of each of the two second bevel gears (422). A support plate (426) is rotatably connected to the other end of the slide rod (424) via a rotating shaft. One side of the support plate (426) is fixedly connected to the movable bracket (412). The grinding shaft (423) passes through the outer side of the slide rod (424).

5. The laser welding device for processing hydraulic gates according to claim 4, characterized in that: Two limiting strips (425) are fixedly connected to the outside of the slide rod (424), and a first mounting plate (427) is fixedly connected to the outside of the slide rod (424). Two first electric telescopic rods (428) are installed at the other end of the first mounting plate (427), and the output shafts of the two first electric telescopic rods (428) are fixedly connected to the second bevel gear (422).

6. The laser welding device for processing hydraulic gates according to claim 1, characterized in that: The welding mechanism (5) includes a positioning assembly (51) for welding the side beams, and the welding mechanism (5) also includes a grinding assembly (52) for cleaning the weld.

7. The laser welding device for processing hydraulic gates according to claim 6, characterized in that: The positioning component (51) includes a second mounting plate (511) fixedly connected to the moving bracket (412). A second motor (512) is mounted at the upper end of the second mounting plate (511). The output shaft of the second motor (512) is fixedly connected to a fixed rotating shaft (513). Two sleeves (514) are fixedly connected to the outer side of the fixed rotating shaft (513). A second electric telescopic rod (515) is arranged on the outer side of the sleeve (514). The output shaft of the second electric telescopic rod (515) is fixedly connected to a moving block (516). Welding heads (517) are arranged at one ends of the two moving blocks (516) close to each other. Rubber rollers (5 (518) are rotatably connected to the other ends of the two moving blocks (516) away from each other. Two clamping plates (519) are fixedly connected to the outer sides of the casings of the two second electric telescopic rods (515). An argon gas cylinder (5110) is fixedly connected to one side of the two clamping plates (519) close to each other. Two hoses (5111) are fixedly connected to the output port of the argon gas cylinder (5110) through a T-shaped pipe. A solenoid valve is arranged on the outer side of the hose (5111). The other end of the hose (5111) is fixedly connected to a solenoid valve jet head (5112). The solenoid valve jet head (5112) is arranged inside the moving block (516).

8. The laser welding device for processing hydraulic gates according to claim 7, characterized in that: A rotating plate (5113) is fixedly connected to the outer side of the fixed rotating shaft (513). Two groups of symmetrically arranged electric clamps (5114) are fixedly connected to one side of the rotating plate (5113). A baffle (5115) is fixedly connected to the ends of the electric clamps (5114) close to each other. A limiting pressure rod (5116) is slidably connected to the inside of the baffle (5115). A grinding sheet (5117) is fixedly connected to one end of the limiting pressure rod (5116). The grinding sheet (5117) is designed in a middle shape. The grinding sheet (5117) is slidably connected to the inside of the electric clamp (5114). A spring (5118) is arranged on the outer side of the limiting pressure rod (5116). One end of the spring (5118) is fixedly connected to the grinding sheet (5117). The other end of the spring (5118) is fixedly connected to the baffle (5115).

9. The laser welding device for processing hydraulic gates according to claim 7, characterized in that: A feed pipe (5119) is rotatably connected to the inside of one of the two rubber rollers (518), specifically the rubber roller (518) close to the upper side. The upper end of the feed pipe (5119) is fixedly connected to a flux liquid tank through a pipe. A discharge port is formed on the outer side of the feed pipe (5119). An L-shaped pipe (5120) is rotatably connected to the outer side of the feed pipe (5119). The L-shaped pipe (5120) is fixedly connected to the inside of the moving block (516).

10. A laser welding device for processing hydraulic gates according to claim 6, characterized in that: The polishing assembly (52) includes two third motors (521) disposed on both sides of the moving block (516). The output shaft of the third motor (521) is fixedly connected to a third mounting plate (522). A fourth motor (524) is disposed at the far end of the two third mounting plates (522). Two symmetrical sprockets (523) are disposed at the close end of the two third mounting plates (522). The output shaft of the fourth motor (524) is fixedly connected to one of the two sprockets (523). A synchronous belt (525) is rotatably connected to the outer side of the two sprockets (523). A plurality of flexible abrasive rods (526) are fixedly connected to the outer side of the synchronous belt (525).

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