A welding production line for a container floor center beam

Abstract

The present application relates to the technical field of welding, in particular to a kind of welding production line for container floor center beam, including placement table and the rectangular slide way being set on placement table;Rectangular slide way is slidably provided with sliding block, sliding block is provided with containing frame by vertical bar, two vertical plates capable of being close to and away from each other are slidably arranged in containing frame, positioning disc is rotatably arranged on each vertical plate, and placing mechanism for placing lower cross beam and center beam is further arranged on positioning disc;Placing mechanism includes a plurality of rotating shafts being arranged along the circumference of positioning disc, and a plurality of rotating shafts can be synchronously moved radially, fixed slide rail is arranged on each rotating shaft, and two clamping plates are slidably arranged in each fixed slide rail;Welding mechanism for welding lower side beam, lower cross beam and center beam is further arranged on each rotating shaft.The present application is adjusted by a plurality of fixed slide rails, thereby adjusting the spacing of placement, and preliminary welding is carried out by welding mechanism, thereby improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and more specifically, to a welding production line for the center beam of a container floor. Background Technology

[0002] The container floor center beam, or floor center beam for short, is a continuous steel longitudinal support beam that runs along the length of the container and is located in the center of the width of the container floor. It is welded to the upper surface of all the transverse bottom beams.

[0003] Chinese Patent CN118752113A: A welding production line for the center beam of a container floor, comprising a welding frame and a container floor composite beam; the welding frame includes a welding table; C-shaped plates are symmetrically fixed on two opposite sides of the welding table; a sliding assembly is slidably arranged between the two C-shaped plates; a rotating assembly is rotatably arranged on the sliding assembly; the sliding assembly includes a U-shaped seat slidably arranged on the two C-shaped plates; a discharge groove is opened on the surface of the U-shaped seat; a sleeve is fixed on the side of the U-shaped seat; a sliding column that is slidably arranged in one sleeve and inserted into the other sleeve.

[0004] In this patent, the lower crossbeam and the center beam are placed by rotating the cross-shaped plate. However, the placement accuracy cannot be guaranteed for lower crossbeams and center beams of different lengths. Furthermore, during continuous placement, the lower crossbeams and center beams falling from the discharge chute of the U-shaped seat may wobble, resulting in positional deviations. Summary of the Invention

[0005] The main objective of this invention is to provide a welding production line for the center beam of a container floor, which adjusts the placement spacing by means of multiple extension strips on a positioning plate and performs preliminary welding by a welding gun, thereby improving the efficiency of subsequent welding.

[0006] To achieve the above objectives, the present invention provides a welding production line for the center beam of a container floor, comprising a placement table, a positioning plate, a placement mechanism, and a welding mechanism; a rectangular slide is provided at the center of the placement table, and a sliding block is slidably disposed on the rectangular slide. A receiving frame is provided on the top of the sliding block via a vertical bar. First hydraulic rods are provided on both outer walls of the receiving frame, and the actuators of the first hydraulic rods extend into the receiving frame and are provided with positioning plates. A guide groove is also provided at the center of the placement table, located inside the rectangular slide. Two abutment plates for abutting the lower beam are slidably disposed within the guide groove. Two vertical plates are slidably disposed inside each receiving frame, and a positioning plate is rotatably disposed at the bottom of each vertical plate. Each positioning plate is circumferentially arranged with... There are multiple radial through slots, and two sets of placement mechanisms. The placement mechanisms are set on the corresponding positioning plates. Each placement mechanism includes a movable block that is slidably set in the corresponding radial through slot. Each movable block has an extension bar at both ends. The ends of the two corresponding extension bars away from the corresponding movable blocks are rotatably set with a rotating shaft. A fixed slide rail is set at the center of each rotating shaft. Two clamping plates are slidably set in each fixed slide rail. There are multiple sets of welding mechanisms. The welding mechanisms are set on the corresponding rotating shafts. Each welding mechanism includes a connecting slide rail set at the end of the rotating shaft. The length direction of the connecting slide rail is perpendicular to the length direction of the fixed slide rail. A second hydraulic rod is slidably set in each connecting slide rail. A welding gun is hinged to the end of each second hydraulic rod.

[0007] Preferably, each vertical plate is further provided with an L-shaped guide bar on one side along the length direction, and the receiving frame is rotatably provided with a first bidirectional screw on one side along the length direction, with the two ends of the first bidirectional screw being threadedly connected to the corresponding L-shaped guide bar respectively.

[0008] Preferably, a first lead screw is rotatably provided in each radial through groove, and the first lead screw is threadedly connected to the corresponding moving block. A circular groove is also provided at the center of each positioning plate, and a drive motor is rotatably provided in the circular groove. A first bevel gear is coaxially provided on the motor shaft of the drive motor. A second bevel gear is provided at one end of each first lead screw that extends into the corresponding circular groove. The first bevel gear meshes with a plurality of corresponding second bevel gears.

[0009] Preferably, each vertical plate is further provided with a vertical guide rail at its bottom, and a pressing block is slidably arranged inside each vertical guide rail. The positioning disk is rotatably arranged on the corresponding pressing block. A pressing spring is also provided between the top of each pressing block and the inner wall of the top of the corresponding vertical guide rail. Each clamping plate is provided with a vertical groove on its opposite side. A guide block is slidably arranged in each vertical groove. A buffer spring is provided between each guide block and the inner wall of the top of the corresponding vertical groove. A first electromagnet is provided on the side of each guide block away from the corresponding vertical groove.

[0010] Preferably, the top of each pressing block is connected to the inner wall of the top of the vertical guide rail via a third hydraulic rod, and the pressing spring is sleeved on the corresponding third hydraulic rod.

[0011] Preferably, a counterweight column is also provided at the edge of each rotating disk.

[0012] Preferably, the welding mechanism further includes a vertical block, a second lead screw, and a reciprocating motor; the vertical block is slidably disposed inside the connecting slide rail, the second hydraulic rod is disposed on the side of the vertical block away from the bottom inner wall of the connecting slide rail, the second lead screw is rotatably disposed inside the connecting slide rail, the vertical block is threadedly connected to the corresponding second lead screw, and the reciprocating motor is disposed at the end of the second hydraulic rod away from the vertical block and is used to drive the welding torch to rotate.

[0013] Preferably, the placement mechanism further includes a second bidirectional lead screw and a rotary motor; each extension bar has a hinge hole at one end away from the corresponding moving block, and the two ends of the rotating shaft are rotatably disposed in the corresponding hinge holes; the rotary motor is disposed on one of the extension bars and is used to drive the rotating shaft to rotate; the second bidirectional lead screw is rotatably disposed inside the fixed slide rail, and the two ends of the second bidirectional lead screw are threadedly connected to the corresponding clamping plate respectively.

[0014] The advantages of this application compared to the prior art are: 1. This application achieves the synchronous movement of multiple moving blocks on the positioning plate, thereby adjusting the distance between multiple rotating shafts according to the design spacing of the lower crossbeam or center beam to meet different production needs. Furthermore, after the lower crossbeam or center beam is placed, the contact points can be welded using a welding torch to ensure overall stability.

[0015] 2. This application uses the intermittent attraction of the first electromagnet to fix the corresponding lower crossbeam or center beam relative to the placement platform, thereby causing the sliding block to move and rotate the positioning disk simultaneously; thus, it can achieve the equidistant placement of the lower crossbeam or center beam, thereby reducing the generation of errors and improving production efficiency.

[0016] 3. This application utilizes the cooperation of rectangular slides and sliding blocks. By placing a corresponding number of lower crossbeams and center beams within the receiving frame, the sliding blocks move along the rectangular slides, thereby enabling the periodic placement and initial welding of the center beams of the base plate according to their stacking order. After placement, the workers transfer the initially welded center beams of the base plate to subsequent steps, thereby improving production efficiency. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention, making other features, objects, and advantages of the invention more apparent. The illustrative embodiments of the invention illustrated in the drawings and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a perspective view of the present invention; Figure 2 yes Figure 1 Enlarged view of a portion of point A in the middle; Figure 3 This is a partial perspective view of the present invention; Figure 4 This is a partial stereoscopic breakdown of the present invention. Figure 1 ; Figure 5 This is a partial stereoscopic breakdown of the present invention. Figure 2 .

[0018] The numbers in the above figure are: 1-Placement platform; 11-Rectangular slide rail; 12-Sliding block; 121-Vertical bar; 122-Receiving frame; 123-First bidirectional lead screw; 13-First hydraulic rod; 131-Positioning plate; 14-Guide groove; 141-Abutting plate; 15-Vertical plate; 151-L-shaped guide bar; 152-Vertical guide rail; 153-Lowering block; 154-Lowering spring; 155-Third hydraulic rod; 2-Positioning plate; 21-Radial through slot; 22-First lead screw; 23-Circular groove; 24-Drive motor; 25-First bevel gear; 26-Second bevel gear; 27-Counterweight column; 3-Placement mechanism; 31-Moving block; 32-Extension bar; 321-Hinge hole; 33-Rotating shaft; 34-Fixed slide rail; 35-Clamping plate; 351-Vertical slot; 352-Guide block; 353-Buffer spring; 354-First electromagnet; 36-Second bidirectional lead screw; 37-Rotary motor; 4-Welding mechanism; 41-Connecting slide rail; 42-Second hydraulic rod; 43-Welding torch; 44-Vertical block; 45-Second lead screw; 46-Reciprocating motor; 5-Floor center beam; 51-Lower side beam; 52-Lower crossbeam; 53-Center beam. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0020] See Figures 1 to 5As shown, a welding production line for the center beam of a container floor includes a placement platform 1, a positioning plate 2, a placement mechanism 3, and a welding mechanism 4. A rectangular slide rail 11 is provided at the center of the placement platform 1. A sliding block 12 is slidably mounted on the rectangular slide rail 11. A receiving frame 122 is provided on the top of the sliding block 12 via a vertical bar 121. First hydraulic rods 13 are provided on both outer walls of the receiving frame 122. The actuators of the first hydraulic rods 13 extend into the receiving frame 122 and are provided with positioning plates 131. A guide groove 14 is also provided at the center of the placement platform 1. The guide groove 14 is located inside the rectangular slide rail 11, and two abutment plates 141 for abutting the lower side beam 51 are slidably mounted inside the guide groove 14. Two vertical plates 15 are slidably mounted inside each receiving frame 122. A positioning plate 2 is rotatably mounted at the bottom of each vertical plate 15. Multiple positioning plates 2 are arranged circumferentially around each positioning plate 2. The radial through groove 21 has two sets of placement mechanisms 3, which are set on the corresponding positioning plate 2. Each placement mechanism 3 includes a movable block 31 that is slidably set in the corresponding radial through groove 21. Each movable block 31 has an extension bar 32 at both ends. The ends of the two corresponding extension bars 32 away from the corresponding movable block 31 are rotatably set with a rotating shaft 33. Each rotating shaft 33 has a fixed slide rail 34 at its center. Each fixed slide rail 34 has two clamping plates 35 that can slide within it. The welding mechanism 4 has multiple sets, which are set on the corresponding rotating shaft 33. Each welding mechanism 4 includes a connecting slide rail 41 set at the end of the rotating shaft 33. The length direction of the connecting slide rail 41 is perpendicular to the length direction of the fixed slide rail 34. Each connecting slide rail 41 has a second hydraulic rod 42 that is slidably set within it. Each second hydraulic rod 42 has a welding gun 43 hinged to its end.

[0021] The floor center beam 535 includes lower side beams 51 arranged parallel to each other; multiple lower crossbeams 52 are equidistantly arranged between the two lower side beams 51; and several center beams 53 are welded equidistantly between each lower crossbeam 52. The operator first places two lower side beams 51 on the placement platform 1, positioned between two contact plates 141. Then, according to the length of the lower side beams 51, the position of the moving block 31 is adjusted so that the moving block 31 moves along the corresponding radial through slot 21 (in this invention, there are preferably three radial through slots 21 on each positioning plate 2), thereby adjusting the distance between the three rotating shafts 33. Then, the operator places the corresponding number of lower crossbeams 52 sequentially inside the receiving frame 122, so that the length direction of the lower crossbeams 52 is the same as the length direction of the receiving frame 122. Then… By bringing the two vertical plates 15 closer together, the lower crossbeam 52 is positioned between the two lower side beams 51. Driven by the first hydraulic rod 13, the positions of the multiple lower crossbeams 52 are fixed, preventing them from falling. Subsequently, the two positioning discs 2 rotate synchronously, moving the fixed slide rail 34 below the receiving frame 122. The rotation of the rotating shaft 33 brings the corresponding fixed slide rail 34 to a horizontal position. At this point, the positioning plate 131 loosens, allowing the lower crossbeam 52 to fall into the corresponding fixed slide rail. Above rail 34, the two corresponding clamping plates 35 are adjusted to move closer together to clamp and fix the lower crossbeam 52. After fixing, the sliding block 12 moves along the rectangular slide 11 while the two positioning discs 2 rotate synchronously, thereby moving the fixed lower crossbeam 52 onto the placement platform 1, thus achieving continuous placement of the lower crossbeam 52. Subsequently, by adjusting the position of the second hydraulic rod 42, the welding torch 43 can weld the contact position between the lower crossbeam 52 and the lower side beam 51, thereby initially fixing the lower crossbeam 52 and the lower side beam 51 and preventing... The lower crossbeam 52 is deviated from its position to ensure the stability between the lower crossbeam 52 and the lower side beam. After welding is completed, the two clamping plates 35 move away from each other, thereby releasing the fixation of the lower crossbeam 52 and facilitating the rotation of the positioning plate 2. After all the lower crossbeams 52 are placed, the sliding block 12 continues to slide along the rectangular slide 11, moving from one side to the adjacent side, and repeating the above operation. This allows the welding of the center beam 53 and the lower crossbeam 52 to be performed by the welding gun 43 while the center beam 53 is being placed continuously, thus completing the placement and fixation of the entire base plate center beam 53.

[0022] See Figure 2 and Figure 3 As shown, each vertical plate 15 is also provided with an L-shaped guide bar 151 on one side along the length direction, and the receiving frame 122 is rotatably provided with a first bidirectional screw 123 on one side along the length direction, and the two ends of the first bidirectional screw 123 are respectively threaded to the corresponding L-shaped guide bar 151.

[0023] The first bidirectional lead screw 123 rotates synchronously, which can drive the two vertical plates 15 to move closer and further apart, thereby adjusting the position of the lower crossbeam 52 or the center beam 53 placed in the receiving frame 122, so that the lower crossbeam 52 can be located between the two lower side beams 51. Furthermore, the L-shaped guide strip 151 can prevent the movement of the vertical plates 15 from interfering with the movement of the lower crossbeam 52 and the center beam 53.

[0024] See Figures 2 to 4 As shown, a first lead screw 22 is rotatably installed in each radial through groove 21. The first lead screw 22 is threadedly connected to the corresponding moving block 31. A circular groove 23 is also provided at the center of each positioning disk 2. A drive motor 24 is rotatably installed in the circular groove 23. A first bevel gear 25 is coaxially installed on the motor shaft of the drive motor 24. A second bevel gear 26 is provided at one end of each first lead screw 22 that extends into the corresponding circular groove 23. The first bevel gear 25 meshes with the corresponding multiple second bevel gears 26.

[0025] Depending on the specifications of the center beam 53 of the base plate required for production, the rotation of the drive motor 24 enables the first bevel gear 25 to rotate. As the first bevel gear 25 rotates, it drives the corresponding multiple second bevel gears 26 to rotate. As the multiple second bevel gears 26 rotate, the first lead screw 22 drives the corresponding multiple moving blocks 31 to move synchronously, adjusting the linear distance between the three rotating shafts 33. This allows for adjustment of the spacing between the lower crossbeams 52 and between the center beams 53, thus meeting different production needs.

[0026] See Figures 2 to 4 As shown, each vertical plate 15 is also provided with a vertical guide rail 152 at its bottom. A pressing block 153 is slidably arranged inside each vertical guide rail 152. The positioning disk 2 is rotatably arranged on the corresponding pressing block 153. A pressing spring 154 is also provided between the top of each pressing block 153 and the inner wall of the top of the corresponding vertical guide rail. Each clamping plate 35 is provided with a vertical groove 351 on its opposite side. A guide block 352 is slidably arranged inside each vertical groove 351. A buffer spring 353 is provided between each guide block 352 and the inner wall of the top of the corresponding vertical groove 351. A first electromagnet 354 is provided on the side of each guide block 352 away from the corresponding vertical groove 351.

[0027] As the sliding block 12 moves, the positioning disk 2 needs to rotate synchronously. At this time, due to the different positions of the moving blocks 31 on the positioning disk 2, the movement trajectory of the center point of the positioning disk 2 is a continuous wave shape when it rotates. Based on this, by setting the vertical guide rail 152, the movement of the lower pressure block 153 can be guided. During the movement of the positioning disk 2, the lower pressure spring 154 can apply downward pressure to the positioning disk 2 in the direction of the placement table 1, so that the lower crossbeam 52 or the center beam 53 held by the clamping plate 35 can be in close contact with the surface of the placement table 1 or the top of the lower crossbeam 52, ensuring the placement stability of the lower crossbeam 52 or the center beam 53.

[0028] Secondly, to further ensure stability during the welding process, a first electromagnet 354 is provided. After the lower crossbeam 52 or the center beam 53 is placed, the first electromagnet 354 can attract the placement platform 1 or the lower crossbeam 52, thereby fixing the position of the fixed slide rail 34 for a second time. Furthermore, through the intermittent attraction of the first electromagnet 354, when the sliding block 12 moves, it can not only fix the fixed slide rail 34 in the direction close to the placement platform 1, but also assist the rotation of the positioning disk 2, thereby ensuring that the spacing between the placed lower crossbeams 52 or the center beam 53 remains consistent.

[0029] See Figure 2 As shown, the top of each pressing block 153 is connected to the inner wall of the top of the vertical guide rail 152 via a third hydraulic rod 155, and the pressing spring 154 is sleeved on the corresponding third hydraulic rod 155.

[0030] After the lower crossbeam 52 is welded and placed, as the sliding block 12 moves, the third hydraulic rod 155 drives the lower pressure block 153 to move away from the placement platform 1, so that the positioning plate 2 can separate from the lower crossbeam 52, ensuring that the sliding block 12 can move to the other side of the rectangular slide rail 11, avoiding volume collision between the fixed slide rail 34 and the newly welded lower crossbeam 52, and ensuring the smooth operation of the equipment.

[0031] See Figure 3 As shown, each rotating disk is also equipped with a counterweight column 27 at its edge.

[0032] With the counterweight column 27 in place, in the initial state, the positioning plate 2 is separated from the surface of the placement platform 1 by the third hydraulic rod 155. Then, under the gravity of the counterweight column 27, the fixed slide rail 34, which is opposite to the counterweight column 27, is positioned directly below the receiving frame 122. Subsequently, by loosening the first hydraulic rod 13, the lower crossbeam 52 or the center beam 53 falls onto the corresponding fixed slide rail 34. Then, the two clamping plates 35 move closer together, thus fixing the lower crossbeam 52 or the center beam 53. At this point, the weight on the positioning plate 2... The different positions cause the positioning plate 2 to rotate 180°, allowing the lower crossbeam 52 or the center beam 53 fixed by the two clamping plates 35 to face the placement platform 1. Subsequently, the third hydraulic rod 155 is released, and under the elastic force of the lower spring 154, the positioning plate 2 can move towards the placement platform 1. Then, the lower crossbeam 52 or the center beam 53 is fixed by the first electromagnet 354, so that the positioning plate 2 can rotate accordingly during the movement of the sliding block 12, achieving equal spacing between the lower crossbeam 52 and the center beam 53.

[0033] See Figure 5 As shown, the welding mechanism 4 also includes a vertical block 44, a second lead screw 45, and a reciprocating motor 46. The vertical block 44 is slidably disposed inside the connecting slide rail 41. The second hydraulic rod 42 is disposed on the side of the vertical block 44 away from the bottom inner wall of the connecting slide rail 41. The second lead screw 45 is rotatably disposed inside the connecting slide rail 41. The vertical block 44 is threadedly connected to the corresponding second lead screw 45. The reciprocating motor 46 is disposed at the end of the second hydraulic rod 42 away from the vertical block 44 and is used to drive the welding torch 43 to rotate.

[0034] The angle of the welding torch 43 can be adjusted by the rotation of the reciprocating motor 46 and the drive of the second hydraulic rod 42, so that the welding torch 43 can weld the contact position of the lower crossbeam 52 and the lower side beam 51, and fix the lower side beam, the lower crossbeam 52 and the center beam 53; and the second hydraulic rod 42 can store the position of the welding torch 43, thereby avoiding the volume collision between the welding torch 43 and the lower crossbeam 52 and the center beam 53.

[0035] See Figures 2 to 4 As shown, the placement mechanism 3 also includes a second bidirectional lead screw 36 and a rotary motor 37; each extension bar 32 has a hinge hole 321 at one end away from the corresponding moving block 31, and the two ends of the rotating shaft 33 are rotatably disposed in the corresponding hinge hole 321. The rotary motor 37 is disposed on one of the extension bars 32 and is used to drive the rotating shaft 33 to rotate; the second bidirectional lead screw 36 is rotatably disposed inside the fixed slide rail 34, and the two ends of the second bidirectional lead screw 36 are threadedly connected to the corresponding clamping plate 35 respectively.

[0036] The rotation of the second bidirectional lead screw 36 causes the two clamping plates 35 to move closer or further away synchronously, thereby clamping and fixing the lower crossbeam 52 or the center beam 53. Furthermore, the rotary motor 37 drives the rotating shaft 33 to rotate, ensuring that the lower crossbeam 52 or the center beam 53 is placed in a horizontal position, thus ensuring placement accuracy.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A welding production line for the center beam of a container floor, characterized in that, Includes a placement platform, positioning plate, placement mechanism, and welding mechanism; A rectangular slide is provided at the center of the placement platform. A sliding block is slidably mounted on the rectangular slide. A receiving frame is provided on the top of the sliding block through a vertical bar. A first hydraulic rod is provided on both outer walls of the receiving frame. The actuator of the first hydraulic rod extends into the receiving frame and is provided with a positioning plate. A guide groove is also provided at the center of the placement platform. The guide groove is located inside the rectangular slide. Two abutment plates for abutting against the lower side beam are slidably mounted in the guide groove. Each receiving frame has two vertical plates that can slide inside. Each vertical plate has a rotatable positioning plate at its bottom. Each positioning plate has multiple radial through slots around its circumference. There are two sets of placement mechanisms, which are set on the corresponding positioning plates. Each placement mechanism includes a moving block that is slidably set in the corresponding radial through slot. Each moving block has an extension strip at both ends. The ends of the two corresponding extension strips away from the corresponding moving blocks are rotatably set with a rotating shaft. Each rotating shaft has a fixed slide rail at its center. Each fixed slide rail has two clamping plates that can slide inside it. There are multiple welding mechanisms, each set on a corresponding rotating shaft. Each welding mechanism includes a connecting slide rail at the end of the rotating shaft. The length direction of the connecting slide rail is perpendicular to the length direction of the fixed slide rail. A second hydraulic rod is slidably installed in each connecting slide rail, and a welding gun is hinged to the end of each second hydraulic rod.

2. The welding production line for the center beam of a container floor according to claim 1, characterized in that, Each vertical plate is also provided with an L-shaped guide bar on one side along its length. The receiving frame is rotatably provided with a first bidirectional screw on one side along its length, and the two ends of the first bidirectional screw are respectively threaded to the corresponding L-shaped guide bar.

3. The welding production line for the center beam of a container floor according to claim 1, characterized in that, Each radial through slot is equipped with a first lead screw that can rotate within it. The first lead screw is threadedly connected to the corresponding moving block. Each positioning plate also has a circular groove at its center. A drive motor is rotatably mounted within the circular groove. A first bevel gear is coaxially mounted on the motor shaft of the drive motor. A second bevel gear is mounted at one end of each first lead screw that extends into the corresponding circular groove. The first bevel gear meshes with multiple corresponding second bevel gears.

4. The welding production line for the center beam of a container floor according to claim 1, characterized in that, Each vertical plate is also equipped with a vertical guide rail at its bottom, and a pressing block is slidably installed inside each vertical guide rail. The positioning plate is rotatably installed on the corresponding pressing block. A pressing spring is also installed between the top of each pressing block and the inner wall of the top of the corresponding vertical guide rail. Each clamping plate has a vertical groove on its opposite side, and a guide block is slidably installed in each vertical groove. A buffer spring is installed between each guide block and the inner wall of the top of the corresponding vertical groove. A first electromagnet is installed on the side of each guide block away from the corresponding vertical groove.

5. A welding production line for the center beam of a container floor according to claim 4, characterized in that, The top of each pressure block is connected to the inner wall of the top of the vertical guide rail via a third hydraulic rod, and the pressure spring is sleeved on the corresponding third hydraulic rod.

6. A welding production line for the center beam of a container floor according to claim 5, characterized in that, Each rotating disc is also equipped with a counterweight disc at its edge.

7. A welding production line for the center beam of a container floor according to claim 1, characterized in that, The welding mechanism also includes a vertical block, a second lead screw, and a reciprocating motor; The vertical block is slidably mounted inside the connecting slide rail. The second hydraulic rod is mounted on the side of the vertical block away from the bottom inner wall of the connecting slide rail. The second lead screw is rotatably mounted inside the connecting slide rail. The vertical block is threadedly connected to the corresponding second lead screw. The reciprocating motor is mounted at the end of the second hydraulic rod away from the vertical block and is used to drive the welding torch to rotate.

8. A welding production line for the center beam of a container floor according to claim 1, characterized in that, The placement mechanism also includes a second bidirectional lead screw and a rotary motor; Each extension bar has a hinge hole at one end away from the corresponding moving block, and the two ends of the rotating shaft are rotatable and are set in the corresponding hinge holes. The rotary motor is set on one of the extension bars and is used to drive the rotating shaft to rotate. The second bidirectional lead screw is rotatably mounted inside the fixed slide rail, and its two ends are threadedly connected to the corresponding clamping plates.

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