Large steel structure butt welding adjusting mechanism

Abstract

The invention discloses a large steel structure butt welding adjusting mechanism, and relates to the technical field of steel structure butt welding. The large steel structure butt welding adjusting mechanism comprises a roller bed composed of a support and a plurality of rotating rollers rotationally installed on the support at equal intervals and a door-shaped frame located on the right portion of the roller bed, and a transverse moving adjusting part used for adjusting the positions of a bottom plate and a long edge side plate in a steel structure frame so as to facilitate butt welding is installed on the support. The lower portion of the rectangular frame base is provided with a flat supporting unit used for being matched with the containing unit to adjust the position of the short-edge side plate, and the rectangular frame base is provided with a pressure gathering unit used for triggering the containing unit to operate to clamp the short-edge side plate with the position adjusted. Automatic positioning, clamping and sequential butt joint of all components of the steel structure are achieved, the component installation reference is controlled in a unified mode, assembly preparation with the consistent height and tight butt joint is efficiently completed, the welding seam forming consistency and the overall structural strength are improved, and meanwhile the butt joint efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure butt welding, and particularly to a butt welding adjustment mechanism for large steel structures. Background Art

[0002] Large steel structures are load-bearing structure systems mainly made of steel and connected by welding, bolts or riveting. Their characteristics are large component sizes, heavy weights, and complex forces. Large steel structures can be divided into various types according to component forms and application scenarios, including H-shaped steel structures, box girder structures, truss structures, cylindrical structures, etc. Among them, the "day"-shaped frame structure is a typical form; the "day"-shaped frame steel structure is a semi-closed enhanced component assembly structure, usually composed of a bottom plate, two long-side side plates connected to the long sides of the bottom plate, and several short-side side plates arranged at equal intervals between the bottom plate and the two side plates, which are welded to form a "day"-shaped structural unit (as Figure 11 shown). During the welding process of this structure, the three types of steel plates, namely the bottom plate, long-side side plates, and short-side side plates, need to be adjusted in position in sequence, and it is necessary to ensure accurate butt joint of the components, tight fit of the seams, flat plate surfaces, and assembly perpendicularity and center line deviation meeting the process specifications. Otherwise, it will seriously affect the welding quality and structural performance.

[0003] Currently, the pre-welding adjustment work for the "day"-shaped frame mostly relies on manual cooperation with equipment. The general process is as follows: First, place the bottom plate on the assembly platform, and then rely on lifting equipment to bring the long-side side plates close to the bottom plate one by one. Manual cooperation with wedges, shims, jacks, etc. is used for positioning, leveling, and fine angle adjustment to make them fit on the side edge of the bottom plate and maintain a vertical state; then insert or place the short-side side plates one by one into the area between the bottom plate and the two side plates; during the whole process, the positions between the components need to be adjusted repeatedly for preliminary fixation before welding.

[0004] However, the traditional pre-welding adjustment method has significant defects: First, all three components need to be adjusted manually one by one, with cumbersome steps and low efficiency. Especially when the number and weight of the components are large, the operation is more difficult; Second, due to the lack of a unified clamping, limiting, and reference positioning mechanism, and large differences in experience among different operators, the perpendicularity and centering degree after component adjustment are often inconsistent. It is difficult for the short-side side plates and the lower edge of the bottom plate to remain on the same horizontal plane, and height inconsistencies are likely to occur, resulting in an offset phenomenon, which reduces the weld strength. Summary of the Invention

[0005] The present invention provides a butt welding adjustment mechanism for large steel structures, which solves the technical problems that before butt welding of traditional steel structures, three components need to be adjusted manually one by one, the operation steps are cumbersome and the efficiency is low. Especially in the case of a large number of components and heavy weights, it is even more difficult. Moreover, there is a lack of a unified clamping, limiting and positioning mechanism, relying on the experience of operators, which easily leads to inconsistent perpendicularity and centering of components, and it is difficult for the lower edges of the short side side plates and the bottom plates to be flush, resulting in height errors and misalignment, thus affecting the weld quality and structural strength.

[0006] A butt welding adjustment mechanism for large steel structures provided by the present invention includes a roller bed composed of a bracket and a plurality of rollers rotatably installed on the bracket at equal intervals, and a gantry located at the right part of the roller bed. A transverse movement adjustment part for adjusting the positions of the bottom plate and the long side side plates in the steel structure frame for butt welding is installed on the bracket. The transverse movement adjustment part is composed of a lifting mechanism and a plurality of movement adjustment mechanisms installed on the lifting mechanism at equal intervals. The movement adjustment mechanism includes: a support fixed to the upper part of the lifting mechanism, a centering unit installed on the support for centering the bottom plate, and a movement clamping unit installed on the support and linked with the centering unit. The movement clamping unit is used to clamp two long side side plates and drive them to first move horizontally towards the bottom plate and then rotate and adjust the position to be butted with the bottom plate. A longitudinal movement adjustment part for adjusting the position of the short side side plates in the steel structure frame for butt welding is installed on the gantry. The longitudinal movement adjustment part includes a rectangular frame seat slidably connected to the lower part of the gantry through a first electric telescopic rod. A plurality of placing units for placing the short side side plates are installed on the rectangular frame seat at equal intervals. A leveling unit for cooperating with the placing units to adjust the position of the short side side plates is installed at the lower part of the rectangular frame seat. A pressure concentrating unit for triggering the operation of the placing units to clamp the short side side plates with adjusted positions is arranged on the rectangular frame seat.

[0007] In a possible implementation manner, the lifting mechanism includes two second electric telescopic rods fixedly connected to the lower part of the bracket. The lower ends of the two second electric telescopic rods are jointly fixedly connected with a bearing frame, and the support is fixedly connected to the upper end surface of the bearing frame.

[0008] In a possible implementation manner, the centering unit includes a rectangular seat fixedly connected to the middle of the upper end surface of the support. Two installation grooves are symmetrically opened in the front and back on the rectangular seat. Push seats are respectively slidably arranged in the installation grooves through guiding members. A return spring is jointly fixedly connected between the push seats and the installation grooves. Push plates are slidably connected to the opposite sides of the two push seats through top spring groups.

[0009] In a possible implementation, the clip moving unit includes two moving seats that are symmetrically and slidably connected to the support in the front and back. A double-acting cylinder is fixedly connected to the support by means of an inlay. The two ends of the double-acting cylinder are respectively fixedly connected to the opposite sides of the two moving seats. The upper end surface of the moving seat is hinged with a U-shaped seat through a lug. A first cylinder is jointly hinged between the U-shaped seat and the moving seat. A partition is jointly fixedly connected between the front and back opposite sides of the U-shaped seat. A second cylinder is fixedly connected to the side of the vertical section of the U-shaped seat near the lug, away from the lug and below the partition. A strip-shaped groove is formed in the partition. One end of the second cylinder away from the lug is fixedly connected to a dialing post slidably arranged in the strip-shaped groove. A dynamic pressure wheel is rotatably connected to the outside of the dialing post. A static pressure wheel is fixedly and rotatably connected to the upper end surface of the partition.

[0010] In a possible implementation, the placing unit includes two annular seats respectively inlaid and rotatably connected to the front and back wall plates of the rectangular frame seat. Two spring telescopic columns are symmetrically and fixedly connected to the inner walls of the annular seats. The ends of the front and rear adjacent spring telescopic columns close to the center of the annular seat are jointly fixedly connected to an arc-shaped plate. A clamping plate is fixedly connected to the right part of the outer wall of the arc-shaped plate. A pulley driving member for driving the annular seat in the front row is arranged in the front wall plate of the rectangular frame seat.

[0011] In a possible implementation, the pressure concentrating unit includes two electric telescopic rods three fixedly connected to the upper end of the rectangular frame seat symmetrically from left to right. A rectangular frame is jointly fixedly connected to the upper ends of the two electric telescopic rods three. A pressure frame arranged in an inverted U shape is fixedly connected to the front and back opposite sides of the rectangular frame and above the arc-shaped plate through a connecting column.

[0012] In a possible implementation, the leveling unit includes two screws symmetrically penetrating and rotatably connected to the front and back wall plates of the rectangular frame seat. A U-shaped supporting plate is jointly threadedly connected to the outside of the two screws.

[0013] In a possible implementation, the guiding member includes a guiding groove and a guiding sliding column. Two guiding grooves that are inclined and parallel are formed in the left and right groove walls of the installation groove. Guiding sliding columns slidably arranged in the guiding grooves are fixedly connected to both the left and right sides of the pushing seat.

[0014] In a possible implementation, top plates for cooperating with the pushing seat are fixedly connected to the opposite sides of the transverse sections of the two adjacent moving seats in the front and back.

[0015] In a possible implementation, spring telescopic rods are fixedly connected to the opposite sides of the adjacent annular seats in the front and back. Introduction plates are fixedly connected to the ends of the spring telescopic rods. Each introduction plate is composed of an inclined section plate and a straight section plate, and the straight section plate is located between the corresponding two arc-shaped plates.

[0016] From the above technical solutions, it can be seen that the present invention has the following advantages:

[0017] In the present invention, through the coordinated cooperation of the centering unit and the clamping and moving unit in the pitch shifting mechanism, the bottom plate and the long side side plate in the steel structure are successively and automatically adjusted in position, clamped, and moved for butt joint. With unified reference control, the installation positions of the bottom plate and the side plates are at the same height, and the butt joint between the plates is more precise, greatly reducing the risk of edge mismatch. Thus, it ensures better consistency in weld formation and significantly improves the structural integrity and strength.

[0018] In the present invention, through the cooperation of the placing unit and the leveling unit in the longitudinal shifting adjustment part, the automatic placing and height unification of the short side side plates are realized, ensuring that the lower edges of each short side side plate are on the same horizontal line, effectively controlling the height difference problem. Then, in cooperation with the pressure concentrating unit, each short side side plate is effectively clamped after adjustment. Finally, all the short side side plates are uniformly driven downward by the longitudinal shifting adjustment mechanism to achieve butt joint with the bottom plate and the two long side side plates, ensuring precise three-sided fitting of the short side side plates with the bottom plate and the long side side plates.

[0019] In the present invention, through the coordinated cooperation of the transverse shifting adjustment part and the longitudinal shifting adjustment part, the rapid adjustment, positioning, and sequential butt joint of the three components of the bottom plate, the long side side plate, and the short side side plate in the steel structure are carried out, facilitating subsequent welding, significantly reducing the preparation time for butt joint adjustment, especially when dealing with multiple and heavy steel components, the efficiency advantage is more prominent, improving the consistency of butt joint adjustment and eliminating and avoiding butt joint errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0021] Figure 1 Schematic structural diagram of the butt welding adjustment mechanism for large steel structures provided by the present invention.

[0022] Figure 2 Schematic installation structure diagram of the lifting mechanism from the bottom view perspective provided by the present invention.

[0023] Figure 3 Schematic connection structure diagram of the pitch shifting mechanism and the lifting mechanism provided by the present invention.

[0024] Figure 4 Schematic three-dimensional structure diagram of the pitch shifting mechanism provided by the present invention.

[0025] Figure 5 Schematic cross-sectional structure diagram of the pitch shifting mechanism from the left view perspective provided by the present invention.

[0026] Figure 6 Provided by the present inventionFigure 5 Schematic enlarged view of part A structure in

[0027] Figure 7 Schematic installation structure diagram of the longitudinal movement adjustment part provided by the present invention.

[0028] Figure 8 Schematic cross-sectional structure view of the longitudinal movement adjustment part from the rear view angle provided by the present invention.

[0029] Figure 9 Schematic installation structure view of the leveling unit from the bottom view angle provided by the present invention.

[0030] Figure 10 Schematic cross-sectional structure view of the rectangular frame base from the front view angle provided by the present invention.

[0031] Figure 11 Shape diagram of the H-shaped steel structure.

[0032] Among them, the above-mentioned drawings include the following reference numerals:

[0033] 1. Bracket; 2. Roller; 3. Gantry; 4. Lifting mechanism; 41. Second electric telescopic rod; 42. Carrying frame; 5. Moving and adjusting mechanism; 51. Support; 52. Centering unit; 521. Rectangular seat; 522. Installation groove; 523. Pushing seat; 524. Pushing plate; 525. Guide groove; 526. Guide sliding column; 53. Moving clamping unit; 531. Moving seat; 532. Double-acting cylinder; 533. U-shaped seat; 534. First cylinder; 535. Partition; 536. Second cylinder; 537. Dynamic pressure wheel; 538. Static pressure wheel; 6. Longitudinal movement adjustment part; 61. Rectangular frame base; 62. Placing unit; 621. Ring seat; 622. Arc plate; 623. Clamping plate; 624. Belt pulley driving part; 625. Introduction plate; 63. Leveling unit; 631. Screw; 632. U-shaped support plate; 64. Pressure concentrating unit; 641. Third electric telescopic rod; 642. Rectangular frame; 643. Pressing frame; 7. Top plate. Detailed implementation manners

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given with reference to the drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0035] Please refer to Figure 1, the present invention provides a technical solution: a butt welding adjustment mechanism for large steel structures, including a roller bed composed of a bracket 1 and a number of rollers 2 rotatably installed on the bracket 1 at equal intervals, and a gantry 3 located at the right part of the roller bed. A transverse movement adjustment part for adjusting the positions of the bottom plate and the long side side plates in the steel structure frame for butt welding is installed on the bracket 1. The transverse movement adjustment part is composed of a lifting mechanism 4 and a number of transfer adjustment mechanisms 5 installed on the lifting mechanism 4 at equal intervals. A longitudinal movement adjustment part 6 for adjusting the position of the short side side plates in the steel structure frame for butt welding is installed on the gantry 3.

[0036] Please refer to Figure 2 and Figure 3 , in this embodiment, the transfer adjustment mechanism 5 includes a support 51 fixedly connected to the upper part of the lifting mechanism 4, a centering unit 52 installed on the support 51 for centering adjustment of the bottom plate, and a transfer clamping unit 53 installed on the support 51 and linked with the centering unit 52. The transfer clamping unit 53 is used to clamp two long side side plates and drive them to first move horizontally towards the bottom plate and then rotate and adjust the position to dock with the bottom plate. The lifting mechanism 4 includes two electric telescopic rods two 41 fixedly connected to the lower part of the bracket 1. The lower ends of the two electric telescopic rods two 41 are jointly fixedly connected with a bearing frame 42, and the support 51 is fixedly connected to the upper end face of the bearing frame 42.

[0037] Please refer to Figure 3 , Figure 4 and Figure 5 , the centering unit 52 includes a rectangular seat 521 fixedly connected to the middle of the upper end face of the support 51. Two installation grooves 522 are symmetrically arranged front and back on the rectangular seat 521. Push seats 523 are respectively slidably arranged in the installation grooves 522 through guiding members. A return spring is fixedly connected between the push seats 523 and the installation grooves 522. Push plates 524 are slidably connected to the opposite sides of the two push seats 523 through top spring groups. The guiding members include guiding grooves 525 and guiding sliding columns 526. Two inclined and parallel guiding grooves 525 are arranged on the left and right groove walls of the installation grooves 522, and guiding sliding columns 526 slidably arranged in the guiding grooves 525 are fixedly connected to the left and right sides of the push seats 523.

[0038] Please refer to Figure 3 , Figure 4 , Figure 5 and Figure 6, the clamp moving unit 53 includes two moving seats 531 symmetrically and slidably connected to the support 51 before and after. A double-acting cylinder 532 is fixedly connected to the support 51 by embedding. The two ends of the double-acting cylinder 532 are respectively fixedly connected to the opposite sides of the two moving seats 531. The upper end surface of the moving seat 531 is hinged with a U-shaped seat 533 through a lug. A cylinder 534 is jointly hinged between the U-shaped seat 533 and the moving seat 531. A partition 535 is fixedly connected between the front and rear opposite sides of the U-shaped seat 533. A cylinder 536 is fixedly connected to the side of the vertical section of the U-shaped seat 533 away from the lug and below the partition 535. A strip-shaped groove is formed in the partition 535. One end of the cylinder 536 away from the lug is fixedly connected with a push rod slidably arranged in the strip-shaped groove. A moving pressure wheel 537 is rotatably connected to the outside of the push rod. A fixed pressure wheel 538 is fixedly and rotatably connected to the upper end surface of the partition 535. The opposite sides of the transverse sections of two adjacent moving seats 531 before and after are both fixedly connected with a top plate 7 for cooperating with the push seat 523.

[0039] The initial horizontal position of the transfer and adjustment mechanism 5 is lower than the horizontal height position of the roller 2. The bottom plate and the two long side side plates are placed on the roller 2 on the roller bed through an external hoisting device. The two long side side plates are respectively located on both sides of the bottom plate. Then, control the electric telescopic rod 41 in the lifting mechanism 4 to extend. The electric telescopic rod 41 then pushes the bearing frame 42 to rise. The bearing frame 42 then drives the transfer and adjustment mechanism 5 to move synchronously. The transfer and adjustment mechanism 5 then drives the centering unit 52 and the clamp moving unit 53 to move upward respectively. After the rectangular seat 521 in the centering unit 52 rises a certain distance, it touches the lower end surface of the bottom plate. After the clamp moving unit 53 rises a certain distance, it drives the partition 535 to lift under the lower part of the long side side plate. Then, control the cylinder 536 to contract. The cylinder 536 then drives the moving pressure wheel 537 to move closer to the fixed pressure wheel 538 through the push rod, thereby clamping the long side side plate. The moving pressure wheels 537 and the fixed pressure wheels 538 in several equally spaced transfer and adjustment mechanisms 5 cooperate with each other to clamp the long side side plate at the same time, and can also adjust and correct the inclined long side side plate during clamping, so that the two long side side plates are parallel to each other.

[0040] Then, control the two-way cylinder 532 to contract, driving the adjacent movable seats 531 in the front and back to move closer to each other. Next, the movable seat 531 drives the two long-side side plates to move closer to the bottom plate through the U-shaped seat 533 and the partition plate 535. At the same time, the movable seat 531 also drives the top plate 7 to move closer to the rectangular seat 521. When the top plate 7 touches the push seat 523, it pushes the push seat 523 to move synchronously, causing the two push seats 523 in the front and back to move closer to each other. Then, the push seat 523 drives the push plate 524 to move through the top spring group. The push seat 523 also drives the guide sliding column 526 to slide along the guide groove 525. Utilizing the inclined state of the guide groove 525, the two push seats 523 move closer to each other and move downward at the same time. During the process of the two push plates 524 in the front and back moving closer to each other, they touch the front and back sides of the bottom plate, correcting the position of the bottom plate, so that the bottom plate moves to the middle of the roller 2. At this time, the bottom plate is parallel to the long-side side plates.

[0041] Then, the two top plates 7 in the front and back continue to push the push seats 523 in the front and back to move closer to each other for a certain distance. The push plate 524 touches the side wall of the bottom plate and stops moving. The top spring group is gradually compressed. Finally, the push seat 523 drives the push plate 524 to separate from the bottom plate and then completely move downward into the installation groove 522. Subsequently, control the cylinder 534 to extend and push the U-shaped seat 533 to rotate around the lug, and then indirectly drive the clamped long-side side plate to rotate, making the long-side side plate stand up and become vertical. After standing up, the long-side side plate moves closer to the bottom plate for a certain distance and then fits onto the bottom plate. Then, control the welding head in the external welding device to weld along the butt joint of the long-side side plate and the bottom plate, welding the two together. After welding, drive the roller 2 to rotate through an external drive source. The roller 2 then drives the bottom plate and the long-side side plate to move to the right, so that the welded bottom plate and long-side side plate are moved out of the transfer mechanism 5. Then, the bottom plate and the long-side side plate are driven to move to a position directly below the longitudinal movement adjustment part 6.

[0042] Please refer to Figure 1 and Figure 7 In this embodiment, the longitudinal movement adjustment part 6 includes two electric telescopic rods 61 symmetrically and fixedly connected to the lower end surface of the horizontal section of the gantry 3. The lower ends of the two electric telescopic rods 61 are jointly fixed with a rectangular frame seat 61 through ear plates. A number of placement units 62 for placing short-side side plates are equidistantly installed on the rectangular frame seat 61. A leveling unit 63 for cooperating with the placement unit 62 to adjust the position of the short-side side plates is installed below the rectangular frame seat 61. A pressure accumulation unit 64 for touching the placement unit 62 to operate and clamp the short-side side plate with adjusted position is arranged on the rectangular frame seat 61.

[0043] Please refer to Figure 7 、 Figure 8 and Figure 9The placement unit 62 includes two annular seats 621 respectively embedded and rotatably connected to the front and rear wall panels of the rectangular frame seat 61. Two spring telescopic columns are symmetrically fixedly connected to the inner wall of the annular seat 621. The ends of the front and rear adjacent spring telescopic columns close to the center of the annular seat 621 are commonly fixedly connected with an arc plate 622. The right part of the outer wall of the arc plate 622 is fixedly connected with a clamping plate 623. A pulley driving member 624 that is transmission-connected to the annular seat 621 in the front row is provided in the front wall panel of the rectangular frame seat 61. The opposite sides of the front and rear adjacent annular seats 621 are fixedly connected with spring telescopic rods. The ends of the spring telescopic rods are fixedly connected with introduction plates 625. The introduction The plate 625 is composed of an inclined section plate and a straight section plate, and the straight section plate is located between the corresponding two arc-shaped plates 622. The leveling unit 63 includes two screws 631 that are symmetrically connected to the front and rear wall plates of the rectangular frame seat 61 for rotation. The two screws 631 are commonly threadedly connected to a U-shaped supporting plate 632 on their outer sides. The pressure-gathering unit 64 includes two electric telescopic rods 641 that are symmetrically fixedly connected to the upper end of the rectangular frame seat 61. The upper ends of the two electric telescopic rods 641 are commonly fixedly connected to a rectangular frame 642. The rectangular frame 642 is fixedly connected to an inverted U-shaped pressure frame 643 on the back sides of the front and rear sides and located directly above the arc-shaped plate 622 through a connecting column.

[0044] First, clamp the short side panel by external lifting equipment and move it to the position flush with the position between the upper and lower arc plates 622, then drive the screw 631 to rotate manually or by external driving equipment, the rotation of the screw 631 drives the U-shaped support plate 632 to move, so that the U-shaped support plate 632 moves to the middle position of the screw 631, then manually or by external lifting equipment, push the end side panel to move to the right and enter the position between the upper and lower arc plates 622, during the movement of the short side panel to the right, its front and rear sides contact the inclined section of the introduction plate 625, then it moves toward the middle under the pressure of the inclined sections of the front and rear introduction plates 625, and the short side panel after centering enters the introduction plate At the straight section plate position of 625, the lifting equipment is then separated from the short side plate, and then the annular seat 621 is driven to rotate 90° by controlling the operation of the pulley drive 624. The annular seat 621 then drives the curved plate 622 to rotate 90° through the spring telescopic column and then stops. The curved plate 622 then drives the clamping plate 623 to rotate synchronously. The short side plates are driven to rotate during the rotation of the two. During the process of the short side plates turning from horizontal to vertical, they will slide downward under their own weight and hit the horizontal section of the U-shaped support plate 632, so that the lower sides of the short side plates placed in each placement unit 62 remain on the same horizontal plane, which can ensure that the front and rear positions of each short side plate are centered and the horizontal positions remain uniform.

[0045] Then, control the electric telescopic rod three 641 to contract, driving the rectangular frame 642 to move downward. Subsequently, the rectangular frame 642 drives the pressing frame 643 to move downward through the connecting column. Then, the pressing frame 643 is sleeved and pressed against the outer arc surfaces of the two arc-shaped plates 622 after they have rotated 90°. Thereby, the two arc-shaped plates 622 are extruded to move closer to each other. Then, the arc-shaped plates 622 drive the clamping plates 623 to move closer to each other to firmly clamp the short-side side plate. Subsequently, rotate the screw rod 631 to drive the U-shaped support plate 632 to move, so that the U-shaped support plate 632 moves away from the area directly below the short-side side plate. Finally, control the electric telescopic rod one to extend, driving the rectangular frame seat 61 to move downward. The rectangular frame seat 61 then drives the entire short-side side plate to move downward through the placement unit 62 until the short-side side plate moves downward into the area between the long-side side plate and the bottom plate. The short-side side plate is then butted against the long-side side plate and the bottom plate. Then, use an external welding device to weld the short-side side plate to the bottom plate and the long-side side plate, and the H-shaped frame steel structure can be welded into shape.

[0046] After welding, first control the electric telescopic rod three 641 to extend and push the rectangular frame 642 to move upward. Then, the rectangular frame 642 drives the pressing frame 643 to move upward through the connecting column to separate from the arc-shaped plate 622. Then, the arc-shaped plate 622 drives the clamping plate 623 to separate from the short-side side plate under the pulling of the spring telescopic column. Then, control the electric telescopic rod one to contract and drive the rectangular frame seat 61 to move upward, so that the longitudinal movement adjustment part 6 as a whole moves away from the short-side side plate.

[0047] During operation, first place the bottom on the roller bed, then place the two long side side plates on the front and rear sides of the roller bed respectively onto the roller bed. Next, control the lifting mechanism 4 to operate and drive the transfer and adjustment mechanism 5 to move upward, so that the centering unit 52 and the clamping unit 53 in the transfer and adjustment mechanism 5 are respectively in contact with the bottom plate and the lower side of the long side side plate. Then, control the clamping unit 53 to operate to first automatically adjust the position of the long side side plate and clamp it, and then move the long side side plate closer to the bottom plate. The clamping unit 53 simultaneously triggers the operation of the centering unit 52, and the centering unit 52 adjusts the position of the bottom plate to make it automatically centered. At this time, the two long side side plates and the bottom plate are parallel to each other. Finally, the clamping unit 53 drives the long side side plate to stand up and dock with the bottom plate. Subsequently, the bottom plate and the long side side plate can be welded together by an external welding device. Then, control the rotating roller 2 to operate to drive the bottom plate and the long side side plate to move rightward as a whole until they move to directly below the longitudinal movement adjustment part 6. Then, lift the short side side plate by an external lifting device and send it into the placement unit 62. The two front and rear guiding plates 625 cooperate with each other to make the fed short side side plate automatically centered. Then, the placement unit 62 drives the short side side plate to rotate by ninety degrees. During the rotation process, the leveling unit 63 is used to make the lower sides of the short side side plates be on the same horizontal plane. Then, control the pressure concentration unit 64 to cooperate with the placement unit 62 to make the placement unit 62 firmly clamp the short side side plate. Then, drive the rectangular frame seat 61 to move downward as a whole by the electric telescopic rod one. The rectangular frame seat 61 drives the short side side plate to move downward to dock with the bottom plate and the long side side plate. Finally, weld the short side side plate and the bottom with the long side side wall together again by an external welding device.

[0048] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0049] In addition, the terms "first", "second", "No. 1", "No. 2" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "No. 1", "No. 2" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] In the present invention, unless otherwise clearly specified or limited, the terms "installed", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A butt welding adjustment mechanism for large steel structures, comprising a roller bed composed of a bracket and a number of rollers rotatably installed on the bracket at equal intervals, and a gantry located at the right part of the roller bed, characterized in that: A transverse adjustment part for adjusting the positions of the bottom plate and the long-side side plates in the steel structure frame for butt welding is installed on the support. The transverse adjustment part consists of a lifting mechanism and a number of shifting adjustment mechanisms installed on the lifting mechanism at equal intervals. The shifting adjustment mechanism includes: a support fixedly connected to the upper part of the lifting mechanism, a centering unit installed on the support for centering adjustment of the bottom plate, and a shifting clamping unit installed on the support and linked with the centering unit. The shifting clamping unit is used to clamp the two long-side side plates and drive them to first move horizontally towards the bottom plate and then rotate and adjust the position to be butted with the bottom plate. A longitudinal adjustment part for adjusting the positions of the short-side side plates in the steel structure frame for butt welding is installed on the gantry. The longitudinal adjustment part includes a rectangular frame seat slidably connected to the lower part of the gantry through a first electric telescopic rod. A number of placing units for placing the short-side side plates are installed on the rectangular frame seat at equal intervals. A leveling unit for cooperating with the placing unit to adjust the position of the short-side side plates is installed at the lower part of the rectangular frame seat. A pressure concentrating unit for triggering the operation of the placing unit to clamp the short-side side plates with adjusted positions is arranged on the rectangular frame seat.

2. The butt welding adjustment mechanism for large steel structures according to claim 1, characterized in that: The lifting mechanism includes two second electric telescopic rods fixedly connected to the lower part of the support. A bearing frame is fixedly connected to the lower ends of the two second electric telescopic rods together. The support is fixedly connected to the upper end face of the bearing frame.

3. The butt welding adjustment mechanism for a large steel structure according to claim 1, characterized in that: The centering unit includes a rectangular seat fixedly connected to the middle of the upper end face of the support. Two installation grooves are symmetrically opened in the front and back of the rectangular seat. Push seats are respectively slidably arranged in the installation grooves through guiding members. A return spring is fixedly connected between the push seats and the installation grooves. Push plates are slidably connected to the opposite sides of the two push seats through top spring groups.

4. The butt welding adjustment mechanism for large steel structures according to claim 3, characterized in that: The shifting clamping unit includes two moving seats slidably connected to the support symmetrically in the front and back. A bidirectional cylinder is fixedly connected to the support in an embedded manner. The two ends of the bidirectional cylinder are respectively fixedly connected to the opposite sides of the two moving seats. A U-shaped seat is hinged to the upper end face of the moving seat through a lug. A first cylinder is jointly hinged between the U-shaped seat and the moving seat. A partition is fixedly connected between the front and back opposite sides of the U-shaped seat. A second cylinder is fixedly connected to the side of the vertical section of the U-shaped seat close to the lug and away from the lug and below the partition. A strip-shaped groove is opened in the partition. A dialing column slidably arranged in the strip-shaped groove is fixedly connected to the end of the second cylinder away from the lug. A moving pressure wheel is rotatably connected to the outside of the dialing column. A fixed pressure wheel is fixedly and rotatably connected to the upper end face of the partition.

5. A butt welding adjustment mechanism for large steel structures according to claim 1, characterized in that: The placing unit includes two annular seats respectively rotatably connected to the front and rear wall plates of the rectangular frame seat in an embedded manner. Two spring telescopic columns are symmetrically fixedly connected to the inner walls of the annular seats. The ends of the front and rear adjacent spring telescopic columns close to the center of the annular seat are jointly fixedly connected with an arc-shaped plate. A clamping plate is fixedly connected to the right part of the outer wall of the arc-shaped plate. A pulley driving member for driving the annular seat in the front row is arranged in the front wall plate of the rectangular frame seat.

6. The butt welding adjustment mechanism for large steel structures according to claim 5, characterized in that: The pressure concentrating unit includes two third electric telescopic rods fixedly connected to the upper part of the rectangular frame seat symmetrically in the left and right. A rectangular frame is fixedly connected to the upper ends of the two third electric telescopic rods together. An inverted U-shaped pressing frame is fixedly connected to the front and back opposite sides of the rectangular frame and above the arc-shaped plate through connecting columns.

7. The butt welding adjustment mechanism for large steel structures according to claim 1, characterized in that: The leveling unit includes two screws that are symmetrically arranged left and right and are rotatably connected through the front and rear wall plates of the rectangular frame base, and a U-shaped support plate is commonly threadedly connected to the outer parts of the two screws.

8. A butt welding adjustment mechanism for large steel structures according to claim 3, characterized in that: The guiding member includes a guiding groove and a guiding sliding column. Two inclined and parallel guiding grooves are formed on the left and right groove walls of the installation groove, and guiding sliding columns that are slidably arranged in the guiding grooves are fixedly connected to both the left and right sides of the pushing seat.

9. A butt welding adjustment mechanism for large steel structures according to claim 4, characterized in that: The opposite sides of the transverse sections of two adjacent moving seats in the front and rear directions are fixedly connected with top plates for cooperating with the pushing seat.

10. A butt welding adjustment mechanism for large steel structures according to claim 5, characterized in that: Spring telescopic rods are fixedly connected to the opposite sides of two adjacent annular seats in the front and rear directions, and guiding plates are fixedly connected to the ends of the spring telescopic rods. The guiding plates are composed of inclined section plates and straight section plates, and the straight section plates are located between the corresponding two arc-shaped plates.

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