A welding production line for the center beam of container floor

Abstract

The present invention is applicable to the technical field of container welding, and provides a welding production line for the center beam of a container floor, comprising a welding frame and a composite beam of a container floor; the welding frame comprises 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 comprises a U-shaped seat slidably arranged on the two C-shaped plates; a discharge trough is provided on the surface of the U-shaped seat; a sleeve is fixed on the side of the U-shaped seat; a sliding column which is plugged and matched with another sleeve is slidably arranged in one sleeve; the device welds the two outermost lower beams between the two lower side beams, and then welds each group of center beams at equal intervals between the two lower beams, and finally realizes the equal spacing of the remaining groups of lower beams on each center beam through the linkage cooperation of the sliding assembly and the rotating assembly, so as to facilitate the rapid welding of the subsequent groups of lower beams, change the traditional welding sequence, and improve the welding efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of container welding, and more particularly to a welding production line for a center beam of a container floor. Background Art

[0002] A container is a group of tools that can be loaded with packaged or unpackaged goods for transportation and is convenient for loading and unloading with mechanical equipment. The container mainly includes columns, lower side beams, lower cross beams, floor center beams, front sides, double doors, side panels, top side beams and top panels; the function of the floor center beam is to separate the floor. The floor is laid on the lower cross beam along the length of the lower side beam, and is separated by multiple floor center beams in the middle. There are floor angles on both sides, and the floor is fastened to each lower cross beam with countersunk self-tapping screws.

[0003] The existing installation method of the center beam of the floor is to first weld and assemble the lower side beam and the lower cross beam, and then weld and fix multiple center beams of the floor on the lower cross beam at equal intervals along the length direction of the lower cross beam. When multiple lower cross beams are laid between the lower side beams along the length direction of the lower side beams, it is impossible to accurately ensure that the lower cross beams are laid between the lower side beams at equal intervals, which affects the laying of the subsequent center beams, and then affects the laying of the floor, reducing the quality and efficiency of the welding production of the center beam of the container floor. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a welding production line for the center beam of a container floor, by welding the two outermost lower cross beams between the two lower side beams, and then welding each group of center beams at equal intervals between the two lower cross beams, and finally, through the linkage cooperation of the sliding assembly and the rotating assembly, the remaining groups of lower cross beams are placed at equal intervals on each center beam, which is convenient for the subsequent rapid welding of each group of lower cross beams, changes the traditional welding sequence, and improves the welding efficiency.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A welding production line for a center beam of a container floor comprises a welding frame and a composite beam of a container floor placed in the welding frame; the welding frame comprises a welding table; a fixing groove adapted to the composite beam of the container floor is provided on the surface of the 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 comprises a U-shaped seat slidably arranged on the two C-shaped plates; a fixing ring is fixed on the surface of the U-shaped seat; a discharging trough is provided on the surface of the U-shaped seat; sleeves arranged coaxially are symmetrically fixed on two opposite sides of the U-shaped seat; a sliding column plug-matched with the other sleeve is slidably arranged in one of the sleeves; the rotating assembly comprises a swivel rotatably arranged on the fixing ring; a cross-shaped plate is fixed between the inner walls of the swivel; a first receiving groove and a second receiving groove arranged perpendicular to each other are provided on the surface of the cross-shaped plate; lower cross beams are alternately stacked in the first receiving groove and the second receiving groove from top to bottom.

[0007] The present invention is further configured as follows: the container floor composite beam comprises lower side beams arranged in parallel with each other; the two lower side beams are welded and connected at equal intervals through a plurality of lower cross beams; and a plurality of center beams are welded at equal intervals between the lower cross beams.

[0008] The present invention is further configured as follows: a sliding rod is fixed between the inner walls of one C-shaped plate; a screw rod is rotatably arranged through the inner walls of another C-shaped plate; a guide hole for slidingly cooperating with the sliding rod is provided at one end of the U-shaped seat, and a screw hole for rotatably cooperating with the screw rod thread is provided at the other end; a driving motor is fixed to the side of one C-shaped plate; and the output end of the driving motor is fixedly connected to one end of the screw rod.

[0009] The present invention is further configured as follows: a fixing plate is fixed to the side of the U-shaped seat; a controller and a control button for controlling the start of the drive motor are installed in sequence on the surface of the fixing plate; an extension plate is fixed to the end of one of the C-shaped plates; vertical plates are symmetrically fixed to the surface of the extension plate; a guide rod is fixed between the two vertical plates, and a screw is rotatably arranged between them; a slide plate is slidably arranged on the guide rod and cooperates with the screw thread to rotate.

[0010] The present invention is further configured as follows: an infrared travel switch electrically connected to the input end of the controller is installed on the side of the skateboard; a rotating shaft is rotatably arranged on the side of the extension plate; a first sprocket is fixed to the end of the rotating shaft; a second sprocket is fixed to the other end of the screw rod; a chain is arranged for meshing transmission between the first sprocket and the second sprocket; ear plates are evenly arranged on the chain; and shading plates are bonded to the corresponding ear plates.

[0011] The present invention is further configured as follows: an annular groove is provided on the inner wall of the fixed ring; an annular rail is fixed on the circumferential side of the rotating ring and rotatably cooperates with the annular groove; a limit rod is symmetrically fixed on the side of the U-shaped seat; a mounting plate is slidably arranged between the two limit rods; the end of the sliding column is fixed on one side of the mounting plate; an iron block is fixed on the other opposite side of the mounting plate; a baffle is fixed between the ends of the two limit rods; an electromagnetic suction cup electrically connected to the output end of the controller is fixed on the side of the baffle; a reset spring mounted on the corresponding limit rod is symmetrically fixedly connected between the mounting plate and the U-shaped seat.

[0012] The present invention is further configured as follows: a plug-in hole is provided on the top of the U-shaped seat; a pressure sensor electrically connected to the input end of the controller is installed on the inner bottom surface of the plug-in hole; support plates are evenly fixed on each side of the cross-shaped plate; a sleeve is fixed on the end of the support plate; a retaining ring is fixed on the inner wall of the sleeve; a slider is slidably arranged inside the sleeve; a connecting rod is fixed on the surface of the slider, and a plug rod plugged into the plug-in hole is fixed on the bottom surface thereof; a ball head is fixed on the top of the connecting rod; and a support spring is fixedly connected between the slider and the retaining ring.

[0013] The present invention is further configured as follows: extension rods are symmetrically fixed on the side surfaces of the fixed ring; a support plate is fixed between the ends of the extension rods; a U-shaped plate is fixed on the surface of the support plate; an electric push rod electrically connected to the output end of the controller is fixedly installed on the top inside the U-shaped plate; the telescopic end of the electric push rod passes through the surface of the support plate and extends downward; an H-shaped pressure plate is fixed on the telescopic end of the electric push rod.

[0014] The advantages of the present invention are:

[0015] 1. The present invention welds the two outermost lower cross beams between the two lower side beams, then welds each group of center beams between the two lower cross beams at equal intervals, and finally realizes the equal spacing of the remaining groups of lower cross beams on each center beam through the linkage cooperation of the sliding component and the rotating component, which facilitates the subsequent rapid welding of each group of lower cross beams, changes the traditional welding sequence, and improves the welding efficiency.

[0016] 2. The present invention stacks the remaining groups of lower cross beams in the first receiving groove and the second receiving groove in an interlaced manner from top to bottom. Whenever the sliding assembly moves a specified distance, the lower cross beams are placed at equal intervals through the linkage cooperation between the components, thereby improving work efficiency and welding quality.

[0017] 3. After the present invention completes the equal spacing of the lower beams of each group, the electric push rod is controlled to drive the H-shaped pressure plate to descend, and the lower beams of each group are pressed tightly against the center beams, thereby improving the stability of subsequent welding, preventing the lower beams from moving and dislocating during welding, and further improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a structural schematic diagram of a welding production line for a container floor center beam of the present invention.

[0019] Figure 2 It is a structural schematic diagram of the welding frame of the present invention.

[0020] Figure 3 For the present invention Figure 2 A magnified image of area A.

[0021] Figure 4 It is a structural schematic diagram of the container floor composite beam of the present invention.

[0022] Figure 5 It is a structural schematic diagram of the central beam of the present invention.

[0023] Figure 6 It is a schematic structural diagram of the sliding assembly of the present invention.

[0024] Figure 7 It is a structural schematic diagram of the sliding assembly of the present invention from another angle.

[0025] Figure 8 It is a schematic structural diagram of the rotating assembly of the present invention.

[0026] Fig. 9 It is a structural schematic diagram of the sliding component and rotating component assembly of the present invention.

[0027] Fig.10 It is a schematic diagram of the structure of the lower cross beam of the present invention in the conveying state.

[0028] Fig.11 It is a schematic diagram of the structure of the lower cross beam of the present invention in a compressed state.

[0029] In the figure: 1, welding frame; 2, container floor composite beam; 3, welding table; 4, fixed groove; 5, C-shaped plate; 6, sliding assembly; 7, rotating assembly; 8, U-shaped seat; 9, fixed ring; 10, discharge chute; 11, sleeve; 12, sliding column; 13, swivel; 14, cross plate; 15, first storage slot; 16, second storage slot; 17, lower cross beam; 18, lower side beam; 19, center beam; 20, slide rod; 21, screw rod; 22, guide hole; 23, screw hole; 24, drive motor; 25, fixed plate; 26, controller; 27, control button; 28, extension plate; 29, vertical plate; 30, guide rod; 3 1. Screw; 32. Slide plate; 33. Infrared travel switch; 34. Rotating shaft; 35. First sprocket; 36. Second sprocket; 37. Chain; 38. Ear plate; 39. Sunshade; 40. Annular groove; 41. Annular rail; 42. Limit rod; 43. Mounting plate; 44. Iron block; 45. Baffle; 46. Electromagnetic suction cup; 47. Reset spring; 48. Plug hole; 49. Support plate; 50. Sleeve; 51. Baffle ring; 52. Slider; 53. Connecting rod; 54. Insert rod; 55. Ball head; 56. Support spring; 57. Extension rod; 58. Support plate; 59. U-shaped plate; 60. Electric push rod; 61. H-shaped pressure plate. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0032] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0033] For example, see Figure 1-11 , the present invention provides the following technical solutions:

[0034] A welding production line for a center beam of a container floor, specifically, comprises a welding frame 1 and a container floor composite beam 2 placed in the welding frame 1; the welding frame 1 comprises a welding table 3; a fixing groove 4 adapted to the container floor composite beam 2 is provided on the surface of the welding table 3; C-shaped plates 5 are symmetrically fixed on two opposite sides of the welding table 3; a sliding assembly 6 is slidably arranged between the two C-shaped plates 5; a rotating assembly 7 is rotatably arranged on the sliding assembly 6; the sliding assembly 6 comprises a U-shaped seat 8 slidably arranged on the two C-shaped plates 5; a fixing ring 9 is fixed on the surface of the U-shaped seat 8; a discharging trough 10 is provided on the surface of the U-shaped seat 8; coaxially arranged A sleeve 11; a sliding column 12 which is plugged and matched with another sleeve 11 is slidably arranged in one sleeve 11; the rotating assembly 7 includes a swivel 13 rotatably arranged on the fixed ring 9; a cross-shaped plate 14 is fixed between the inner walls of the swivel 13; a first receiving groove 15 and a second receiving groove 16 which are arranged perpendicular to each other are opened on the surface of the cross-shaped plate 14; lower cross beams 17 are alternately stacked in the first receiving groove 15 and the second receiving groove 16 from top to bottom; the container floor composite beam 2 includes lower side beams 18 which are arranged parallel to each other; the two lower side beams 18 are connected by welding at equal intervals through a plurality of lower cross beams 17; and a plurality of center beams 19 are welded at equal intervals between the lower cross beams 17.

[0035] The working principle of the first embodiment is as follows: the two outermost lower cross beams 17 are welded between the two lower side beams 18, and then each group of central beams 19 is welded between the two lower cross beams at equal intervals (such as Figure 5 As shown in the figure, by stacking the remaining groups of lower beams 17 in the first receiving groove 15 and the second receiving groove 16 from top to bottom in an interlaced manner, the remaining groups of lower beams 17 are placed at equal intervals on each center beam 19 through the linkage cooperation of the sliding component 6 and the rotating component 7, which is convenient for the subsequent rapid welding of each group of lower beams 17. Since there are a large number of lower beams 17 in the container floor composite beam 2, each group of lower beams 17 is welded between the two lower side beams 18 in the traditional welding process. This process requires manual equal-interval placement of each group of lower beams 17, which increases the difficulty of welding and reduces the welding efficiency. The present application changes the traditional welding sequence and improves the welding efficiency.

[0036] For example 2, please refer to Figure 1-11, the second embodiment is improved on the basis of the first embodiment as follows. Specifically, a slide bar 20 is fixed between the inner walls of a C-shaped plate 5; a screw rod 21 is rotatably arranged between the inner walls of another C-shaped plate 5; a guide hole 22 is provided at one end of the U-shaped seat 8 to slide with the slide bar 20, and a screw hole 23 is provided at the other end to rotate with the screw rod 21; a drive motor 24 is fixed to the side of a C-shaped plate 5; the output end of the drive motor 24 is fixedly connected to one end of the screw rod 21; a fixing plate 25 is fixed to the side of the U-shaped seat 8; a controller 26 and a control button 27 for controlling the start of the drive motor 24 are sequentially installed on the surface of the fixing plate 25; an extension is fixed at the end of the C-shaped plate 5 Plate 28; vertical plates 29 are symmetrically fixed on the surface of the extension plate 28; a guide rod 30 is fixed between the two vertical plates 29, and a screw rod 31 is rotatably arranged between them; a slide plate 32 is slidably arranged on the guide rod 30 and is matched with the threaded rotation of the screw rod 31; an infrared travel switch 33 which is electrically connected to the input end of the controller 26 is installed on the side of the slide plate 32; a rotating shaft 34 is rotatably arranged on the side of the extension plate 28; a first sprocket 35 is fixed on the end of the rotating shaft 34; a second sprocket 36 is fixed on the other end of the screw rod 21; a chain 37 is arranged for meshing transmission between the first sprocket 35 and the second sprocket 36; ear plates 38 are evenly arranged on the chain 37; and a shading plate 39 is bonded to the corresponding ear plates 38.

[0037] The working principle of the second embodiment is as follows: by controlling and starting the driving motor 24, the screw rod 21 is driven to rotate, thereby driving the sliding assembly 6 and the rotating assembly 7 to move synchronously by a specified distance, so that each group of lower cross beams 17 are placed at equal intervals.

[0038] During the rotation of the screw rod 21, the second sprocket 36 is driven to rotate, and the chain 37 is cooperated to drive the synchronous rotation of the first sprocket 35. A number of ear plates 38 are arranged at equal intervals on the chain 37. By gluing each group of shading plates 39 to the corresponding ear plates 38 at equal intervals, the distance between two adjacent shading plates 39 is ensured to be equal. When the corresponding shading plate 39 moves to the infrared travel switch 33, the infrared travel switch 33 transmits a signal to the controller 26. The controller 26 controls the shutdown of the drive motor 24. After completing the placement of a group of lower beams 17, the control button 27 is pressed to start the drive motor 24, thereby realizing the equal-interval movement of the sliding component 6 and the rotating component 7.

[0039] When it is necessary to adjust the placement spacing between the two lower beams 17, the spacing between each group of light shielding plates 39 is adjusted by changing the pasting position of each group of light shielding plates 39. After the adjustment is completed, the screw 31 is rotated to drive the slide plate 32 to slide along the guide rod 30, so that the infrared travel switch 33 is aligned with a group of adjacent light shielding plates 39, ensuring that each movement process is the distance from one group of light shielding plates 39 to the next adjacent group of light shielding plates 39, that is, ensuring that the second sprocket 36 together with the corresponding screw 21 rotates a specified number of times each time, thereby ensuring that the placement spacing between adjacent lower beams 17 remains consistent.

[0040] For example 3, please refer to Figure 1-11 , the third embodiment of the present invention is improved as follows on the basis of the second embodiment. Specifically, an annular groove 40 is provided on the inner wall of the fixing ring 9; an annular rail 41 which is rotatably matched with the annular groove 40 is fixed to the side surface of the rotating ring 13; a limiting rod 42 is symmetrically fixed to the side surface of the U-shaped seat 8; a mounting plate 43 is slidably arranged between the two limiting rods 42; the end of the sliding column 12 is fixed to one side surface of the mounting plate 43; an iron block 44 is fixed to the other opposite side surface of the mounting plate 43; a baffle 45 is fixed between the ends of the two limiting rods 42; an electromagnetic suction cup 46 which is electrically connected to the output end of the controller 26 is fixed to the side surface of the baffle 45; the mounting plate 43 and the U-shaped seat 8 are symmetrically fixed and connected A reset spring 47 is connected and sleeved on the corresponding limit rod 42; a plug hole 48 is opened on the top of the U-shaped seat 8; a pressure sensor electrically connected to the input end of the controller 26 is installed on the inner bottom surface of the plug hole 48; support plates 49 are evenly fixed on each side of the cross-shaped plate 14; a sleeve 50 is fixed to the end of the support plate 49; a retaining ring 51 is fixed to the inner wall of the sleeve 50; a slider 52 is slidably arranged inside the sleeve 50; a connecting rod 53 is fixed to the surface of the slider 52, and a plug rod 54 plugged with the plug hole 48 is fixed on its bottom surface; a ball head 55 is fixed to the top of the connecting rod 53; a support spring 56 is fixedly connected between the slider 52 and the retaining ring 51.

[0041] Working principle of the third embodiment: In the initial state, the discharge slot 10 on the U-shaped seat 8 is connected to the second receiving slot 16. At this time, the electromagnetic suction cup 46 loses power, and the sliding column 12 is driven to be inserted into the two sleeves 11 under the elastic reset force of the reset spring 47 to prevent the lower crossbeam 17 of the lowermost layer of the second receiving slot 16 from falling directly through the discharge slot 10. At this time, a group of plug rods 54 are placed just above the plug hole 48, and the ball head 55 is pressed downward to drive the plug rod 54 to descend and insert into the plug hole 48, and press the pressure sensor. The pressure sensor transmits the signal to the controller 26, and the controller 26 controls the electromagnetic suction cup 46. The disk 46 is electrically attracted to the corresponding iron block 44, so that the sliding column 12 slides out of the discharge trough 10, and the lowest lower beam 17 in the second receiving groove 16 falls onto each center beam 19 through the discharge trough 10, completing the discharge of the lower beam 17. At this time, the lowest lower beam 17 in the cross-shaped plate 14 is the lowest lower beam 17 in the first receiving groove 15. Since the first receiving groove 15 and the discharge trough 10 are arranged perpendicular to each other at this time, the lowest lower beam 17 in the second receiving groove 16 in the initial state is the lowest lower beam 17 in the first receiving groove 15 during the blanking process.

[0042] When the sliding assembly 6 and the rotating assembly 7 continue to move the specified distance, the driving motor 24 stops working, and the cross-shaped plate 14 is turned 90° to connect the first receiving groove 15 with the discharge groove 10. The sliding column 12 is inserted into the two sleeves 11. The above operation is repeated to complete the discharge of the lowest layer of the lower beam 17 in the first receiving groove 15. The above operation is repeated to complete the equal spacing of each group of lower beams 17, thereby improving work efficiency.

[0043] Example 4, please refer to Figure 1-11 The fourth embodiment makes the following improvements on the basis of the third embodiment. Specifically, extension rods 57 are symmetrically fixed on the side surfaces of the fixing ring 9; a support plate 58 is fixed between the ends of the extension rods 57; a U-shaped plate 59 is fixed on the surface of the support plate 58; an electric push rod 60 electrically connected to the output end of the controller 26 is fixedly installed on the top of the U-shaped plate 59; the telescopic end of the electric push rod 60 passes through the surface of the support plate 58 and extends downward; an H-shaped pressing plate 61 is fixed on the telescopic end of the electric push rod 60.

[0044] The working principle of the fourth embodiment of the present invention is as follows: after completing the equal spacing of the lower cross beams 17 of each group, the electric push rod 60 is controlled to drive the H-shaped pressure plate 61 to descend, so as to press each group of lower cross beams 17 onto each center beam 19, thereby improving the stability of subsequent welding, preventing the lower cross beams 17 from moving and dislocating during the welding process, and further improving the welding quality.

[0045] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0046] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0047] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0049] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A welding production line for a container floor center beam, comprising a welding frame (1) and a container floor composite beam (2) placed in the welding frame (1); characterized in that: The welding frame (1) comprises a welding platform (3); a fixing groove (4) adapted to the container floor composite beam (2) is provided on the surface of the welding platform (3); C-shaped plates (5) are symmetrically fixed on two opposite sides of the welding platform (3); A sliding assembly (6) is slidably disposed between the two C-shaped plates (5); a rotating assembly (7) is rotatably disposed on the sliding assembly (6); The sliding assembly (6) comprises a U-shaped seat (8) slidably arranged on two C-shaped plates (5); a fixing ring (9) is fixed on the surface of the U-shaped seat (8); a discharge groove (10) is opened on the surface of the U-shaped seat (8); sleeves (11) arranged coaxially are symmetrically fixed on two opposite sides of the U-shaped seat (8); a sliding column (12) is slidably arranged in one of the sleeves (11) and is plugged into and matched with the other sleeve (11); The rotating assembly (7) comprises a rotating ring (13) rotatably arranged on a fixed ring (9); a cross-shaped plate (14) is fixed between the inner walls of the rotating ring (13); a first receiving groove (15) and a second receiving groove (16) arranged perpendicular to each other are formed on the surface of the cross-shaped plate (14); lower cross beams (17) are alternately stacked in the first receiving groove (15) and the second receiving groove (16) from top to bottom; The inner wall of the fixed ring (9) is provided with an annular groove (40); an annular rail (41) rotatably matched with the annular groove (40) is fixed to the peripheral side of the rotating ring (13); a limiting rod (42) is symmetrically fixed to the side of the U-shaped seat (8); a mounting plate (43) is slidably arranged between the two limiting rods (42); the end of the sliding column (12) is fixed to one side of the mounting plate (43); an iron block (44) is fixed to the other opposite side of the mounting plate (43); a baffle (45) is fixed between the ends of the two limiting rods (42); an electromagnetic suction cup (46) electrically connected to the output end of the controller (26) is fixed to the side of the baffle (45); a return spring (47) sleeved on the corresponding limiting rod (42) is symmetrically fixedly connected between the mounting plate (43) and the U-shaped seat (8); The top of the U-shaped seat (8) is provided with a plug hole (48); a pressure sensor electrically connected to the input end of the controller (26) is installed on the inner bottom surface of the plug hole (48); support plates (49) are evenly fixed to each side of the cross-shaped plate (14); a sleeve (50) is fixed to the end of the support plate (49); a retaining ring (51) is fixed to the inner wall of the sleeve (50); a slider (52) is slidably arranged inside the sleeve (50); a connecting rod (53) is fixed to the surface of the slider (52), and a plug rod (54) pluggable with the plug hole (48) is fixed to the bottom surface thereof; a ball head (55) is fixed to the top of the connecting rod (53); a support spring (56) is fixedly connected between the slider (52) and the retaining ring (51); Extension rods (57) are symmetrically fixed to the side surface of the fixed ring (9); a support plate (58) is fixed between the ends of the extension rods (57); a U-shaped plate (59) is fixed to the surface of the support plate (58); an electric push rod (60) electrically connected to the output end of the controller (26) is fixedly installed on the top of the U-shaped plate (59); the telescopic end of the electric push rod (60) passes through the surface of the support plate (58) and extends downward; an H-shaped pressing plate (61) is fixed to the telescopic end of the electric push rod (60).

2. The welding production line for the center beam of container floor according to claim 1, characterized in that: The container floor composite beam (2) comprises lower side beams (18) arranged parallel to each other; the two lower side beams (18) are welded and connected at equal intervals via a plurality of lower cross beams (17); and a plurality of center beams (19) are welded at equal intervals between the lower cross beams (17).

3. The welding production line for the center beam of container floor according to claim 2, characterized in that: A sliding rod (20) is fixed between the inner walls of one of the C-shaped plates (5); a screw rod (21) is rotatably arranged through the inner walls of the other of the C-shaped plates (5); a guide hole (22) is provided at one end of the U-shaped seat (8) for sliding engagement with the sliding rod (20), and a screw hole (23) is provided at the other end for threaded rotation engagement with the screw rod (21); a driving motor (24) is fixed to the side of one of the C-shaped plates (5); and an output end of the driving motor (24) is fixedly connected to one end of the screw rod (21).

4. The welding production line for center beam of container floor according to claim 3, characterized in that: A fixing plate (25) is fixed to the side of the U-shaped seat (8); a controller (26) and a control button (27) for controlling the start of the drive motor (24) are sequentially mounted on the surface of the fixing plate (25); an extension plate (28) is fixed to the end of one of the C-shaped plates (5); vertical plates (29) are symmetrically fixed to the surface of the extension plate (28); a guide rod (30) is fixed between the two vertical plates (29), and a screw rod (31) is rotatably arranged therebetween; a slide plate (32) is slidably arranged on the guide rod (30) and is rotatably matched with the screw rod (31).

5. The welding production line for center beam of container floor according to claim 4, characterized in that: An infrared travel switch (33) electrically connected to an input end of a controller (26) is mounted on a side of the slide plate (32); a rotating shaft (34) is rotatably mounted on a side of the extension plate (28); a first sprocket (35) is fixed to an end of the rotating shaft (34); a second sprocket (36) is fixed to the other end of the screw rod (21); a chain (37) is arranged between the first sprocket (35) and the second sprocket (36) for meshing transmission; ear plates (38) are evenly arranged on the chain (37); and a shading plate (39) is bonded to the corresponding ear plates (38).

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