Lifting and clamping device for welding steel lattice columns

Abstract

The application discloses a lifting and clamping device for welding steel lattice columns, which comprises a rectangular support frame for sleeving the steel lattice columns to be welded around the periphery, the length of the rectangular support frame being longer than or equal to the length of the steel lattice columns to be welded; coaxial fixing of respective rotating drums is arranged at both ends of the rectangular support frame, the rotating drums being rotatably matched with the roller structures on the top of the respective support seats; the rectangular support frame is provided with multiple clamping structures for fixing the positions of the four angle steels of the steel lattice columns to be welded; the rectangular support frame is provided with multiple linear driving structures for adjusting the size of the opposite sides of the four angle steels of the steel lattice columns and tensioning the four angle steels during welding and separating from the four angle steels after welding; and the roller structure is two rollers arranged in parallel on the top of the support seat, and each rotating drum is rotatably matched with the groove formed by the two rollers. The device is simple, convenient, labor-saving and efficient, and can meet the needs of circumferential interval welding of the steel lattice columns and longitudinal interval welding of the steel lattice columns.

Description

Technical Field

[0001] This invention relates to the field of pile foundation construction technology, specifically to a lifting and clamping device for welded steel lattice columns. Background Technology

[0002] Existing steel lattice columns are constructed by welding four angle steels extending along their length and several rows of lacing plates, with four plates in each row. The cross-section of the steel lattice column is rectangular.

[0003] With technological advancements, mobile automatic welding devices are gradually replacing manual welding. However, since each lacing plate of a steel lattice column needs to be welded to angle steel at both ends, and eight ends need to be welded for each row of lacing plates, and in order to ensure that the welding process of the steel lattice column does not anneal (i.e., does not affect the mechanical properties of the steel lattice column) and that the welding process is not subject to thermal bending (i.e., does not affect the straightness of the steel lattice column), it is required that the lacing plates be welded at intervals along the four sides of the cross-section and at intervals along the length direction. This makes the rotation, alignment, and tightening processes in the manual welding process very cumbersome, laborious, and inefficient.

[0004] The existing auxiliary devices for welding reinforcing cages cannot meet the needs of the circumferential and longitudinal indirect welding plates of the above-mentioned steel lattice columns. To the applicant's knowledge, there are also no existing lifting and clamping devices for welding steel lattice columns that can meet the needs of the circumferential and longitudinal interval welding plates of the above-mentioned steel lattice columns. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a lifting and clamping device for welding steel lattice columns that is simple to operate, convenient, labor-saving and efficient, and can adapt to the needs of circumferential and longitudinal interval welding plates for steel lattice columns.

[0006] The technical solution of the present invention is to provide a lifting and clamping device for welding steel lattice columns, including a rectangular support frame on which the steel lattice column to be welded is fitted, the length of the rectangular support frame being longer than or equal to the length of the steel lattice column to be welded; each end of the rectangular support frame is fixed with a rotating cylinder on the same axis, and the two rotating cylinders are rotatably engaged on the roller structure on the top of their respective support bases; the rectangular support frame has multiple clamping structures for fixing the positions of the four angle steels of the steel lattice column to be welded; the rectangular support frame has multiple linear drive structures for adjusting the opposite side dimensions of the four angle steels of the steel lattice column and for tensioning the four angle steels during welding and disengaging them after welding.

[0007] With the above structure, the lifting and clamping device for welded steel lattice columns of the present invention has the following advantages:

[0008] Since the steel lattice column to be welded can be fitted onto the outer periphery of the rectangular support frame, and the four angle steels are clamped by the clamping structure, during welding, the rectangular support frame can be manually rotated to cooperate with the automatic welding device to automatically move longitudinally to indirectly weld the circumferential and longitudinal weld plates onto the steel lattice column. Furthermore, due to the arrangement of multiple linear drive structures, the device can adapt to the needs of square or rectangular steel lattice columns or steel lattice columns with different angle steel side dimensions. It can also hold the entire steel lattice column to be welded during welding, and when the steel lattice column needs to be removed after welding, the free end of the piston rod, as described below as the first piston rod free end end, is released from the constraint on the steel lattice column.

[0009] This invention relates to a lifting and clamping device for welding steel lattice columns. It can meet the requirements of welding lacing plates at intervals along the cross-section and along the length direction, while ensuring that the steel lattice column is not annealed during the welding process, thus not affecting the mechanical properties of the steel lattice column, and that the welding process is not affected by thermal bending, thus not affecting the straightness of the steel lattice column. It also has a simple structure, is easy and convenient to operate, saves effort, and has a fast welding process with high welding efficiency.

[0010] Furthermore, the roller structure consists of two rollers arranged parallel to each other on the top of the support base, with each rotating cylinder rotating within a groove formed by the two rollers. This structure makes the rolling of each rotating cylinder relative to the rollers more flexible, stable, reliable, and labor-saving, further ensuring the smooth progress of the circumferential interval welding process for the steel lattice column.

[0011] Furthermore, each clamping structure includes a limiting block positioned on the two longitudinal beams of the rectangular support frame, a U-shaped clamping block that clamps the two angle steels of the steel lattice column to be welded on the outside, and screws that tighten the limiting block and the U-shaped clamping block to fix the two angle steels. With this structure, the clamping mechanism is simple, the operation is convenient and quick, and it can clamp the four angle steels to be welded without hindering the smooth welding of the gusset plates along the perimeter of the steel lattice column and along its length.

[0012] Furthermore, each pair of longitudinal beams of the rectangular support frame has two clamping structures arranged along the length direction. With the above structure, the arrangement of the clamping structures along the length direction of the rectangular support frame is more reasonable, further ensuring the technical effect of clamping the four angle steels to be welded without hindering the smooth welding of the steel lattice column with gusset plates at intervals around the cross-section and along the length direction.

[0013] Furthermore, the linear drive structure consists of a first hydraulic cylinder. The first cylinder body of each first hydraulic cylinder is fixed to a longitudinal beam of a rectangular support frame. The free end of the first piston rod of the first hydraulic cylinder passes through another longitudinal beam on the same side and extends outward from the outer side of the beam. With this structure, all cylinders can synchronously extend or retract their piston rods at equal distances by simply starting or stopping the cylinders simultaneously, thereby pressing or disengaging the four angle steels of the steel lattice column to be welded. This linear drive structure is simple in structure, easy and convenient to operate, and labor-saving, further improving welding efficiency.

[0014] Furthermore, multiple first hydraulic cylinders are arranged at intervals along the length of the rectangular support frame. Each position along the length of the first hydraulic cylinder consists of a pair of first hydraulic cylinders, with the first piston rods of these pairs facing opposite directions. Each of the four longitudinal beams of the rectangular support frame has multiple free ends of the first piston rods of the first hydraulic cylinders extending from their outer sides. With this structure, the linear drive structure is more evenly and rationally arranged in the circumferential and length directions of the rectangular support frame. This makes the adjustment of the internal dimensions of the four angle steel members of the steel lattice column to be welded, the tensioning effect during welding, and the detachment process after welding more balanced and rational. Operation is simpler, more convenient, and less labor-intensive, further improving welding efficiency.

[0015] Furthermore, a rectangular base is located directly below the rectangular support frame, and the bottoms of the two support seats are fixed to the rectangular base. With the above structure, the overall integrity and stability of the rectangular support frame are improved, and the rotation, clamping, and tensioning operations during the welding process of the steel lattice columns are more stable, reliable, convenient, and quick, further improving welding efficiency.

[0016] Furthermore, a rotating shaft is coaxially fixed to the outer end of one of the two rotating cylinders. The outer end of this rotating shaft is rotatably fitted into a bushing at the free end of the second piston rod of a second hydraulic cylinder. The lower end of the second cylinder body of the second hydraulic cylinder is hinged to this end of the rectangular base. The second hydraulic cylinder is used to retract and use the roller structure at this end as a fulcrum to tilt the other end of the rectangular support frame upwards, facilitating the removal of the welded steel lattice column. Alternatively, it can extend to place the rotating cylinders at both ends of the rectangular support frame on their respective roller structures, allowing them to rotate and assisting in welding. With the above structure, after the welding of one steel lattice column is completed, the second hydraulic cylinder can be activated to tilt the other end of the rectangular support frame away from the second hydraulic cylinder upwards, and the first hydraulic cylinder can be activated to retract, causing the free end of the piston rod of the first hydraulic cylinder to disengage from the four angle steels of the steel lattice column. The welded steel lattice column can then be dragged away from the rectangular support using a truck crane or similar axial method. This makes the function of this auxiliary device more complete, the operation more convenient, and further improves the working efficiency of steel lattice column welding. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a steel lattice column using existing technology.

[0018] Figure 2 This is a structural schematic diagram of the device of the present invention in the welding state, i.e., in the horizontal state (the lacing plate of the steel lattice column is not shown).

[0019] Figure 3 yes Figure 2 A magnified structural diagram of A in the diagram.

[0020] Figure 4 yes Figure 2 A magnified structural diagram of B in the diagram.

[0021] Figure 5 This is a schematic diagram of the structure of the steel lattice column after welding is completed and the column is tilted upwards in preparation to be removed from the welded structure (the connecting plate of the steel lattice column and the clamping structure of the device are not shown in the figure).

[0022] Figure 6 yes Figure 5 A magnified structural diagram of C.

[0023] Figure 7 yes Figure 2 A schematic diagram of the four angle steels of the steel structure exposed by explosion.

[0024] Figure 8 yes Figure 7 A magnified structural diagram of D in the diagram.

[0025] Figure 9 yes Figure 8 A magnified structural diagram of E in the middle.

[0026] Figure 10 This is a schematic diagram of the clamping structure in the device of the present invention.

[0027] The figure shows: 1. Steel lattice column, 2. Angle steel, 3. Connecting plate, 4. Rectangular base, 5. Second longitudinal beam, 6. Connecting horizontal plate, 7. Rotary cylinder, 8. Rotating shaft, 9. Bushing, 10. Free end of second piston rod, 11. Second oil cylinder, 12. Roller shaft, 13. Support seat, 14. Roller, 15. First oil cylinder, 16. U-shaped locking block, 17. Screw, 18. Limiting block, 19. Roller structure, 20. Groove, 21. Second cylinder body, 22. Connecting block, 23. Ear plate, 24. Rectangular support frame, 25. Free end of first piston rod, 26. First longitudinal beam, 27. First cylinder body, 28. Clamping structure. Detailed Implementation

[0028] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions of specific embodiments are for the purpose of aiding understanding the invention and do not constitute a limitation thereof. Furthermore, the technical means involved in the various specific embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] In existing steel lattice columns 1, each connecting plate needs to be welded to angle steel at both ends, and eight ends of each row of connecting plates need to be welded. Furthermore, to ensure that the welding process of the steel lattice column 1 does not anneal (i.e., does not affect the mechanical properties of the steel lattice column 1) and that the welding process is not subject to thermal bending (i.e., does not affect the straightness of the steel lattice column 1), the connecting plates 3 are required to be welded at intervals along the perimeter of the cross-section and at intervals along the length direction. Connecting plates 3 can also be called transverse connecting plates.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 As shown.

[0031] This invention relates to a lifting and clamping device for welding steel lattice columns, comprising a rectangular support frame 24 on the outer periphery of the steel lattice column 1 to be welded, the length of the rectangular support frame 24 being longer than or equal to the length of the steel lattice column 1 to be welded. This invention can also be understood as a lifting and clamping device for welding steel lattice columns 1. Two rotating cylinders 7 are coaxially fixed at both ends of the rectangular support frame 24, and the two rotating cylinders 7 are rotatably engaged with roller structures 19 on the top of their respective support bases 13. The rectangular support frame 24 has multiple clamping structures 28 that fix the positions of the four angle steels 2 of the steel lattice column 1 to be welded.

[0032] The rectangular support frame 24 has multiple adjustable steel lattice columns 1 with four angle steels 2 on opposite sides, and a linear drive structure that tensions the four angle steels 2 during welding and releases them after welding. The rectangular support frame 24 can be a truss structure, such as four longitudinal beams, like the first longitudinal beam 26, which are all made of rectangular steel pipes. The horizontal and diagonal connecting rods that connect the four rectangular steel pipes are also made of rectangular steel pipes and are all welded together for fixation.

[0033] The roller structure 19 preferably consists of two rollers 14 arranged parallel to each other on the top of the support base 13, with each rotating cylinder 7 rotatably fitted within the groove 20 formed by the two rollers 14. Each roller 14 is rotatably fitted onto the support base 13 via a roller shaft 12.

[0034] Each clamping structure 28 includes a limiting block 18 that is positioned on the two longitudinal beams of the rectangular support frame 24, such as the two first longitudinal beams 26; a U-shaped clamping block 16 that clamps the outside of the two angle steels 2 of the steel lattice column 1 to be welded; and a screw 17 that tightens the limiting block 18 and the U-shaped clamping block 16 to fix the two angle steels 2. The screw 17 may be a wing screw, the free end of the screw 17 may be threaded, the limiting block 18 may be threaded, the remaining part of the screw 17 may be a smooth rod, and the end of the screw 17 extending out of the bottom of the limiting block 18 may be provided with a locking nut or an axial limiting cotter pin.

[0035] Preferably, each pair of longitudinal beams of the rectangular support frame 24, such as the first longitudinal beam 26, has two clamping structures 28 arranged along the length direction. That is, the four first longitudinal beams 26 of the device of the present invention preferably have a total of four clamping structures 19 arranged along the length direction, such as two clamping structures 28 on the two upper first longitudinal beams 26 and two clamping structures 28 on the two lower first longitudinal beams 26.

[0036] The linear drive structure is preferably a first hydraulic cylinder 15. The first cylinder body 27 of each first hydraulic cylinder 15 is fixed, for example, welded to a longitudinal beam, such as a first longitudinal beam 26, of a rectangular support frame 24. The free end 25 of the first piston rod of the first hydraulic cylinder 15 passes through another longitudinal beam, such as another first longitudinal beam 26, on the same side and symmetrically, and extends out of the outer side of the longitudinal beam, such as the first longitudinal beam 26. The hydraulic cylinder is also called a hydraulic cylinder.

[0037] Multiple first hydraulic cylinders 15 are arranged at intervals along the length of the rectangular support frame 24. Each pair of first hydraulic cylinders 15 has its first piston rods facing opposite directions, meaning the free ends 25 of the first piston rods of the first hydraulic cylinders 15 face opposite directions. Each of the four longitudinal beams of the rectangular support frame 24 (e.g., four first longitudinal beams 26) has multiple free ends 25 of the first piston rods of the first hydraulic cylinders 15 extending outwards on both outer sides. Each beam may have two to six such free ends. The four first longitudinal beams 26 of the rectangular support frame 24 (e.g., four rectangular steel pipes) have a total of sixteen or more free ends 25 of the first piston rods of the first hydraulic cylinders 15 extending outwards on their eight outer sides. "Passing through the first longitudinal beam 26" refers to passing through a pre-set through-hole in the first longitudinal beam 26 (e.g., rectangular steel pipe).

[0038] The linear drive structure can also use a cylinder or an electric push rod. The bottom end of the cylinder body or the bottom end of the electric push rod housing is fixed on a longitudinal beam of a rectangular support frame. The free end of the piston rod of the cylinder or the free end of the push rod of the electric push rod passes through another longitudinal beam on the same side and is symmetrical, and extends out of the outer side of the longitudinal beam.

[0039] A rectangular base 4 is preferably located directly below the rectangular support frame 24, and the two support seats 13 are fixed to the rectangular base 4 at their bottoms. The rectangular base 4 can also be a truss structure. For example, the two longitudinal beams, such as the two second longitudinal beams 5, are made of channel steel, and multiple connecting cross plates 6 are welded onto the two channel steels.

[0040] One of the two rotating cylinders 7 has a rotating shaft 8 fixed coaxially at its outer end. The outer end of the rotating shaft 8 is rotatably fitted into a bushing 9 at the free end 10 of the second piston rod of a second hydraulic cylinder 11. The lower end of the second cylinder body 21 of the second hydraulic cylinder 11 is hinged to that end of the rectangular base 4. The second hydraulic cylinder 11 is used to retract and use the roller structure 19 at its end as a fulcrum to tilt the other end of the rectangular support frame 24 upwards, making it easier to pull out the welded steel lattice column 1, or to extend and place the rotating cylinders 7 at both ends of the rectangular support frame 24 on their respective roller structures 19 so that they can rotate to assist welding. The bushing 9 can be welded and fixed to the free end 10 of the second piston rod. The lower end of the second cylinder body 21 of the second oil cylinder 11 is hinged to the same end of the rectangular base 4. The two ear plates 23 welded to the same end of the rectangular base 4 and the connecting block 22 welded to the lower end of the second cylinder body 21 of the second oil cylinder 11 are hinged by inserting a hinge pin into their respective hinge pin holes and then limiting the hinge pin axially.

[0041] Both ends of the roller structure can be connected to a motor and gearbox and driven. The device of the present invention may also be equipped with a main controller, such as a PLC programmable controller, and sensors, relays, etc., which can control the rollers to rotate at timed intervals, and the rotation arc, as well as the forward and reverse rotation, can be controlled by the main controller.

[0042] Components, structures, or quantities not marked above are not shown in the drawings. The drawings are for illustrative purposes only; in case of any discrepancies between the drawings and the text description, or between the drawings themselves, the text description shall prevail.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A lifting and clamping device for welding steel lattice columns, characterized in that: The system includes a rectangular support frame fitted around the steel lattice column to be welded, the length of which is greater than or equal to the length of the steel lattice column to be welded; each end of the rectangular support frame is fixed with a rotating cylinder on its own axis, and the two rotating cylinders are rotatably fitted onto a roller structure on the top of their respective support bases; the rectangular support frame has multiple clamping structures that fix the positions of the four angle steels of the steel lattice column to be welded; and the rectangular support frame has multiple linear drive structures that adjust the opposite side dimensions of the four angle steels of the steel lattice column and tension the four angle steels during welding and release them from the four angle steels after welding. The roller structure consists of two rollers arranged in parallel on the top of the support base, with each rotating cylinder rotating and fitting within the groove formed by the two rollers; One of the two rotating cylinders has a rotating shaft fixed coaxially at its outer end. The outer end of the rotating shaft is rotatably fitted into a bushing at the free end of the second piston rod of a second hydraulic cylinder. The lower end of the second cylinder body of the second hydraulic cylinder is hinged to that end of the rectangular base. The second hydraulic cylinder is used to retract and use the roller structure at that end as a fulcrum to tilt the other end of the rectangular support frame upward to facilitate the removal of the welded steel lattice column, or to extend and place the rotating cylinders at both ends of the rectangular support frame on their respective roller structures so that they can rotate to assist welding.

2. The lifting and clamping device for welding steel lattice columns according to claim 1, characterized in that: Each clamping structure includes a limiting block that is positioned on the two longitudinal beams of the rectangular support frame, a U-shaped clamp that clamps the outside of the two angle steels of the steel lattice column to be welded, and screws that tighten the limiting block and the U-shaped clamp to fix the two angle steels.

3. The lifting and clamping device for welding steel lattice columns according to claim 2, characterized in that: There are two clamping structures arranged along the length of each pair of longitudinal beams of the rectangular support frame.

4. The lifting and clamping device for welding steel lattice columns according to claim 1, characterized in that: The linear drive structure is a first hydraulic cylinder. The first cylinder body of each first hydraulic cylinder is fixed on a longitudinal beam of a rectangular support frame. The free end of the first piston rod of the first hydraulic cylinder passes through another longitudinal beam on the same side and is symmetrical to it, and extends out of the outer side of the longitudinal beam.

5. The lifting and clamping device for welding steel lattice columns according to claim 4, characterized in that: Multiple first cylinders are arranged at intervals along the length of the rectangular support frame. Each position with a first cylinder in the length direction is a pair of first cylinders. The first piston rods of the pair of first cylinders are facing opposite directions. Each of the four longitudinal beams of the rectangular support frame has multiple free ends of the first piston rods of the first cylinders extending outward from the two outer sides of each longitudinal beam.

6. The lifting and clamping device for welding steel lattice columns according to claim 1, characterized in that: The rectangular support frame has a rectangular base directly below it, and the bottoms of the two support seats are fixed on the rectangular base.

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