Metal frame welding tool for building construction

Abstract

The present invention discloses a metal skeleton welding tool for construction in the field of welding tool technology, comprising a frame, which is arranged in pairs and covered on a column, the frames are detachable, and a roller group is arranged inside; the frame can move vertically relative to the column through the roller group; the bearing part is used to bear the beam and rotate relative to the frame with the help of the gravity of the beam; the fastening part is arranged on the frame through a rotating shaft, rotates coaxially with the bearing part, and an elastic part is arranged between the bearing part; the clamping part comprises a pneumatic structure and a clamping structure, and the pneumatic structure is installed between the bearing part and the fastening part; the clamping structure is installed on the bearing part, and is used to position the beam on the bearing part; through dynamic positioning adjustment, dynamic adjustment of the clamping force according to the gravity of the beam and generation of continuous pulling force, the welding accuracy is effectively guaranteed, the welding quality is optimized, the internal stress is reduced and the overall stability of the frame is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of welding tooling, in particular to a metal frame welding tooling for building construction. Background Art

[0002] In the construction industry, metal skeleton structures are widely used in various large-scale construction projects, including high-rise buildings, industrial plants, and large bridges, due to their high strength, lightweight design, and excellent plasticity. Metal skeleton structures typically consist of columns and beams. Columns serve as vertical support members, while beams connect horizontally or diagonally between the columns to form a stable framework. During construction, efficient and precise assembly of beams and columns is crucial for ensuring the overall quality and safety of metal skeleton structures.

[0003] Common connection methods include bolted assembly and welding. Bolted assembly requires high manufacturing precision: holes must be drilled and precisely aligned in the plate, increasing the manufacturing workload. Poor hole drilling accuracy can easily lead to a mismatch between the bolt diameter and the hole diameter. It is prone to loosening: bolts may loosen under vibration loads, and cracks are prone to corrosion, leading to connection failure. Cross-sectional weakening: drilling holes weakens the component cross-section, requiring the addition of auxiliary connecting plates, increasing structural complexity and steel consumption. Compared to bolted assembly, welded connections offer superior structural performance: welded joints have high strength, reaching or exceeding the strength of the parent material, with high connection rigidity and excellent sealing performance.

[0004] During the construction of long-standing construction projects, horizontal beams are welded to vertical columns to increase the structural strength of the metal frame;

[0005] In the existing welding process, the usual means is to support the beam by tightening the support parts in advance and keep the welding points fully exposed; because the support device is fastened to the vertical column, that is, the positioning means of the support device mainly relies on the vertical support column; this will cause errors in the fitting state between the beam and the vertical support column when the support column is skewed or there is a height difference in the burial, and it will be difficult to adjust; further, when the welding is completed, it is easy to cause large internal stress between the beam and the vertical support column and cause the frame to bend and deform; on the one hand, it affects the laying of the facade, and on the other hand, it will also affect the structural strength of the metal skeleton. Summary of the Invention

[0006] The technical solution of the present invention is to provide a metal frame welding tool for construction, which can effectively ensure welding accuracy, optimize welding quality, reduce internal stress and enhance the overall stability of the frame through dynamic positioning adjustment, dynamic adjustment of clamping force according to the gravity of the beam and generation of continuous pulling force.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a metal frame welding tool for construction, comprising a frame, the frames being arranged in pairs and covering a column, the frames being detachable and having roller groups disposed therein; the frames being able to move vertically relative to the column via the roller groups;

[0008] The bearing part is rotatably arranged on the frame body through the rotating shaft, and is used to bear the crossbeam and rotate relative to the frame body by the gravity of the crossbeam;

[0009] The fastening part is rotatably mounted on the frame body via a rotating shaft, coaxially rotating with the bearing part, and an elastic member is disposed between the fastening part and the bearing part; in the initial stage, the fastening part rotates synchronously with the bearing part via the elastic member, causing the fasteners located on both sides of the column to contact the column, thereby achieving the positioning of the frame body;

[0010] The clamping portion includes a pneumatic structure and a clamping structure, wherein the pneumatic structure is installed between the load-bearing portion and the fastening portion; the clamping structure is installed on the load-bearing portion and is used to position the crossbeam on the load-bearing portion;

[0011] After the frame is positioned, the load-bearing part rotates relative to the fastening part by compressing the elastic member, and the pneumatic structure triggers the clamping structure to clamp the beam. The clamping force is proportional to the deflection angle of the load-bearing part relative to the fastening part.

[0012] As a further solution of the present invention, the bearing portion includes:

[0013] Connecting rod: each frame is provided with a connecting rod through a rotating shaft, and the connecting rod is provided with a coaxial rotation with the fastening part;

[0014] A bearing plate is provided for the connecting rod to rotate together, and the bearing plate is used to support the crossbeam;

[0015] The connecting rod can compress the elastic part to rotate relative to the fastening part. When the connecting rod rotates relative to the fastening part, the free end of the connecting rod tilts downward, so that after the clamping structure clamps the beam, the gravity of the beam is used to drive the connecting rod to keep rotating, so that a pulling force is generated between the column and the beam.

[0016] As a further solution of the present invention, the bearing portion further includes a balancing member, which is installed at the bottom of the bearing plate and is located below a hinge point between the bearing plate and the connecting rod.

[0017] As a further solution of the present invention, the fastening portion includes:

[0018] The bracket is coaxially rotatable with the connecting rod, and the elastic member is arranged between the bracket and the connecting rod;

[0019] There are at least two fasteners, which are respectively arranged on both sides of the column. The fasteners are respectively located on the upper and lower sides of the bracket hinge point, and the fasteners are both connected to the bracket.

[0020] As a further solution of the present invention, the clamping structure includes:

[0021] The telescopic members are arranged in pairs and are rotatably arranged between the bearing plate and the connecting rod;

[0022] The clamping plates are arranged in pairs, slidingly arranged on the bearing plate towards each other, and rotatably arranged with the telescopic end of the telescopic member;

[0023] When the connecting rod rotates relative to the bracket, the pneumatic structure drives the clamping plates to move closer to each other through the telescopic parts to complete the clamping of the beam.

[0024] As a further solution of the present invention, the pneumatic structure includes a piston and a sliding sleeve. The piston and the sliding sleeve are slidably arranged and fixed on the connecting rod and the bracket respectively. The sliding sleeve is connected to the telescopic member through an air pipe.

[0025] As a further embodiment of the present invention, each of the fasteners comprises:

[0026] The fastening sleeve is arranged between the brackets, and a connecting piece is provided between the fastening sleeve and the brackets. The connecting piece is threadedly connected to the brackets, and the connecting piece is plugged into the fastening sleeve. The side wall of the connecting piece is fixed with a limiting piece for limiting the fastening sleeve.

[0027] As a further solution of the present invention, the connecting rod is coaxially fixed with a locking ring, the locking ring is coaxially provided with a locking plate, the adjacent surfaces of the locking ring and the locking plate are rough surfaces, the locking plate is rotatably provided with a fastening bolt, and the fastening bolt is threadedly connected to the rotating shaft.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. In the present invention, when the support column is deflected or there is a height difference in the burial, the fitting state between the crossbeam and the vertical support column is very prone to errors and difficult to adjust, which seriously affects the welding quality; the frame is arranged in pairs and covers the column, and is detachable. A roller group is provided inside, which can realize vertical movement relative to the column and can be assembled at the bottom of the column; the assembly operation is more convenient, the difficulty and risk of working at height are reduced, and the safety of construction workers is guaranteed.

[0030] 2. In the present invention, the greater the deflection angle of the bearing part relative to the fastening part, the greater the clamping force applied to the beam; the design of dynamically adjusting the clamping force according to the gravity of the beam can not only ensure that sufficient clamping force is applied to the beam to ensure the stability of the beam during the welding process, but also effectively avoid excessive clamping causing slight deformation of the beam, thereby fundamentally avoiding the existence of prestress in the beam after welding is completed, reducing the internal stress of the frame as a whole, and effectively preventing the frame from bending and deformation; in this way, not only the laying effect of the facade is guaranteed, but also the structural strength of the metal skeleton is greatly improved, and the service life of the building is extended.

[0031] 3. In the present invention, when the crossbeam is hoisted onto the load-bearing portion, it deflects relative to the frame under the action of its gravity, driving the fastening portion to rotate synchronously. After the fasteners on either side of the fastening portion contact the column, the frame is relatively fixed. At this point, the fastening portion stops rotating, while the load-bearing portion continues to rotate, deflecting relative to the fastening portion, compressing the elastic member. This creates a dynamic positioning and adaptive adjustment mechanism that can be flexibly adjusted based on the actual state of the column, ensuring an ideal fit between the crossbeam and the column, laying a solid foundation for subsequent high-quality welding.

[0032] 4. In the present invention, even after the clamping structure successfully clamps the beam, the load-bearing portion remains under the continuous influence of the beam's weight, maintaining its deflection tendency. Because the welding fixture frame is relatively fixed to the column, and the beam is also relatively fixed to the clamping structure, the load-bearing portion can continue to rotate when a slight gap exists between the column and the beam, thereby generating a certain degree of pulling force between the column and the beam. This continuous pulling force further strengthens the connection between the column and the beam, making the entire metal skeleton frame more secure and reliable after welding, effectively improving the overall stability of the frame, and providing a strong guarantee for the safety and durability of the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 This is a schematic diagram of the use scenario of the present invention;

[0035] Figure 2 This is a partially enlarged structural diagram of the application scenario of the present invention;

[0036] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0037] Figure 4 This is a schematic structural diagram of the fastening portion and its connection relationship of the present invention;

[0038] Figure 5 This is a schematic diagram of the exploded structure of the fastening portion and its connection relationship of the present invention;

[0039] Figure 6 This is a schematic diagram of the frame structure of the present invention;

[0040] Figure 7 Schematic diagram of the cross-sectional structure of the connecting rod of the present invention;

[0041] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0042] 1. Frame; 11. Roller assembly; 12. Rotating shaft; 2. Load-bearing part; 21. Connecting rod; 22. Load-bearing plate; 23. Balancing member; 3. Fastening part; 31. Bracket; 32. Fastener; 33. Fastening sleeve; 34. Connecting member; 35. Limiting plate; 4. Pneumatic structure; 41. Piston; 42. Sliding sleeve; 5. Clamping structure; 51. Telescopic member; 52. Clamping plate; 61. Locking ring; 62. Locking plate; 63. Fastening bolt; 7. Elastic member. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0044] See also Figure 1-Figure 7 The present invention provides a technical solution: a metal frame welding tool for construction, comprising a frame 1, the frame 1 is arranged in pairs and covered on a column, the frame 1 is detachable, and a roller group 11 is arranged inside; the frame 1 can move vertically relative to the column through the roller group 11; see Figure 6The frame 1 includes a main body and a connecting part. The main body is arranged on both sides of the column, and the connecting part is arranged on one side of the main body. The end of the main body away from the connecting part is opened to facilitate the frame 1 to cross the installed beam; the connecting part is connected by a quick-release structure so that the frame 1 can be quickly covered on the main body, and the quick-release structure is not limited to bolt connection assembly; the friction between the frame 1 and the main body overcomes the gravity of the welding tool itself to ensure that the welding tool can move vertically on the column; the roller group 11 can drive the frame 1 to the specified position, which means that the frame 1 can be assembled at the bottom of the column. On the one hand, assembling the frame 1 on the ground is convenient to operate, which reduces the difficulty and requirements of assembly; on the other hand, there is no need to carry welding tooling to high altitude operations, which avoids the unassembled welding tooling from falling and injuring passers-by, and can improve the safety of construction workers;

[0045] The bearing portion 2 is rotatably mounted on the frame 1 via the rotating shaft 12, and is used to support the crossbeam and rotate relative to the frame 1 by virtue of the weight of the crossbeam. When the crossbeam is hoisted onto the bearing portion 2, the bearing portion 2 deflects relative to the frame 1 under the weight of the crossbeam.

[0046] The fastening portion 3 is rotatably mounted on the frame 1 via the rotating shaft 12 and coaxially rotates with the supporting portion 2. An elastic member 7 is disposed between the fastening portion 3 and the supporting portion 2. In the initial stage, the fastening portion 3 rotates synchronously with the supporting portion 2 via the elastic member 7, causing the fastening portion 3 to rotate and the fasteners 32 located on both sides of the column to abut against the column, thereby achieving positioning of the frame 1.

[0047] The clamping portion includes a pneumatic structure 4 and a clamping structure 5. The pneumatic structure 4 is installed between the load-bearing portion 2 and the fastening portion 3. The clamping structure 5 is installed on the load-bearing portion 2 to position the crossbeam on the load-bearing portion 2.

[0048] After the frame 1 is positioned, the load-bearing part 2 rotates relative to the fastening part 3 by compressing the elastic member 7, so that the pneumatic structure 4 triggers the clamping structure 5 to clamp the beam. The clamping force is proportional to the deflection angle of the load-bearing part 2 relative to the fastening part 3, that is, proportional to the gravity of the beam. The heavier the beam, the greater the clamping force applied to the beam. The clamping force can be dynamically adjusted according to the gravity of the beam, which can not only ensure the clamping force applied to the beam, but also avoid slight deformation of the beam caused by excessive clamping, resulting in prestressed beam after welding, affecting the overall strength of the frame.

[0049] Specifically, after the construction of the column is completed, the frame 1 is installed on the ground, that is, at the bottom of the column, and the frame 1 is installed on the column to be welded with the crossbeam through the quick-disassembly structure, which is convenient for operation and improves the safety factor of the construction site; after the frame 1 is installed, the roller group 11 drives the frame 1 to rise along the column; when the frame 1 rises to the specified height, the crossbeam is lifted by the lifting equipment, and the two ends of the crossbeam are placed on the bearing part 2 in the corresponding welding tooling, and the bearing part 2 rotates axially around the rotating shaft 12 under the action of the gravity of the crossbeam, and the bearing part 2 drives the fastening part 3 to rotate synchronously through the elastic part 7, so that the fasteners 32 on both sides are clamped from both sides of the column, thereby increasing the fastening degree between the frame 1 and the column, so that the frame 1 is fixed relative to the column;

[0050] When the fasteners 32 on both sides of the fastening part 3 come into contact with the column, and the frame 1 is relatively fixed, the fasteners 32 are subjected to resistance, causing the fastening part 3 to stop rotating, while the bearing part 2 continues to rotate and deflects relative to the fastening part 3. The elastic member 7 is compressed. On the one hand, the fastening degree between the frame 1 and the column can be gradually increased, so that the clamping force between the frame 1 and the column can be dynamically adjusted according to the gravity of the beam, which can ensure the clamping force applied to the column and prevent the welding tool from falling, and can also avoid excessive clamping.

[0051] On the other hand, the load-bearing part 2 rotates relative to the fastening part 3 by compressing the elastic member 7, so that the pneumatic structure 4 triggers the clamping structure 5 to clamp the beam. The clamping force is proportional to the deflection angle of the load-bearing part 2 relative to the fastening part 3, that is, proportional to the gravity of the beam. The heavier the beam, the greater the clamping force applied to the beam. The clamping force can be dynamically adjusted according to the gravity of the beam, which can not only ensure the clamping force applied to the beam, but also avoid slight deformation of the beam caused by excessive clamping, resulting in prestressed beam after welding, affecting the overall strength of the frame.

[0052] After the clamping structure 5 clamps the crossbeam, the bearing part 2 is still affected by the gravity of the crossbeam, so that the bearing part 2 maintains a deflection trend. The welding fixture frame 1 is relatively fixed to the column, and the crossbeam is relatively fixed to the clamping structure 5. When there is a slight gap between the column and the crossbeam, the bearing part 2 can continue to rotate, so that there is a certain pulling force between the column and the crossbeam.

[0053] In summary, in the present invention:

[0054] When the support column is tilted or there is a height difference in the burial, the fitting state between the beam and the vertical support column is prone to errors and is difficult to adjust, which seriously affects the welding quality; the frame 1 is arranged in pairs and covered on the column, and is detachable. A roller group 11 is provided inside, and the roller group 11 can be used to achieve vertical movement relative to the column, and the assembly can be completed at the bottom of the column; this makes the assembly operation more convenient, reduces the difficulty and risk of working at height, and ensures the safety of construction workers.

[0055] The greater the deflection angle of the bearing part 2 relative to the fastening part 3, the greater the clamping force applied to the beam; the design of dynamically adjusting the clamping force according to the gravity of the beam can not only ensure that sufficient clamping force is applied to the beam to ensure the stability of the beam during the welding process, but also effectively avoid excessive clamping causing slight deformation of the beam, thereby fundamentally avoiding the existence of prestress in the beam after welding is completed, reducing the internal stress of the frame as a whole, and effectively preventing the frame from bending and deformation; in this way, not only the laying effect of the facade is guaranteed, but also the structural strength of the metal skeleton is greatly improved, and the service life of the building is extended.

[0056] When the crossbeam is hoisted onto the load-bearing portion 2, it deflects relative to the frame 1 under the action of its gravity, driving the fastening portion 3 to rotate synchronously. After the fasteners 32 on both sides of the fastening portion 3 come into contact with the column, the frame 1 is relatively fixed. At this time, the fastening portion 3 stops rotating, while the load-bearing portion 2 continues to rotate and deflects relative to the fastening portion 3, compressing the elastic member 7. This constitutes a dynamic positioning and adaptive adjustment mechanism that can be flexibly adjusted according to the actual state of the column, ensuring an ideal fit between the crossbeam and the column, laying a solid foundation for subsequent high-quality welding operations.

[0057] After the clamping structure 5 successfully clamps the beam, the load-bearing portion 2 remains under the continuous influence of the beam's weight, maintaining its deflection tendency. Because the welding fixture frame 1 is relatively fixed to the column, and the beam is also relatively fixed to the clamping structure 5, the load-bearing portion 2 can continue to rotate when a slight gap exists between the column and the beam, generating a certain degree of pulling force between the column and the beam. This continuous pulling force further strengthens the connection between the column and the beam, making the entire metal skeleton frame more solid and reliable after welding, effectively improving the overall stability of the frame and providing strong protection for the safety and durability of the building.

[0058] As a further solution of the present invention, the bearing portion 2 includes:

[0059] Connecting rod 21, each frame 1 is provided with a connecting rod 21 through the rotating shaft 12, and the connecting rod 21 is provided with a coaxial rotation with the fastening part 3;

[0060] The bearing plate 22 and the connecting rod 21 are rotated together to form a bearing plate 22, which is used to support the crossbeam;

[0061] The connecting rod 21 can compress the elastic member 7 and rotate relative to the fastening portion 3. When the connecting rod 21 rotates relative to the fastening portion 3, the free end of the connecting rod 21 tilts downward, so that after the clamping structure 5 clamps the beam, the gravity of the beam is used to drive the connecting rod 21 to keep rotating, so that a pulling force is generated between the column and the beam, and the pulling force is proportional to the gravity of the beam.

[0062] Specifically, when both ends of the beam are placed on the bearing plate 22, the bearing plate 22 is subjected to force to drive the connecting rod 21 to rotate around the rotating shaft 12, and the connecting rod 21 drives the fastening part 3 to rotate synchronously through the elastic member 7. The fasteners 32 of the fastening part 3 located on both sides of the column abut against the column to achieve the positioning of the frame 1;

[0063] After the clamping structure 5 clamps the beam, the load-bearing plate 22 is subjected to force to keep the connecting rod 21 in a rotational trend. On the one hand, it ensures the connection strength between the frame 1 and the column, and prevents the frame 1 from moving relative to the column, which affects the installation of the beam; on the other hand, the connecting rod 21 can generate a pulling force between the column and the beam, reduce the gap between the column and the beam, and reduce the difficulty of welding to cope with slight tilt or deformation of the column.

[0064] As a further solution of the present invention, the bearing part 2 also includes a balancing member 23, which is installed at the bottom of the bearing plate 22, and the balancing member 23 is located below the hinge point between the bearing plate 22 and the connecting rod 21; when the connecting rod 21 rotates, the balancing member 23 can keep the bearing surface of the bearing plate 22 always facing upward under the action of gravity, making it convenient to place the beam on the bearing surface of the bearing plate 22, and facilitating the clamping structure 5 to clamp the beam.

[0065] As a further solution of the present invention, the fastening portion 3 includes:

[0066] The bracket 31 is coaxially rotatable with the connecting rod 21, and the elastic member 7 is arranged between the bracket 31 and the connecting rod 21;

[0067] There are at least two fasteners 32, which are respectively provided on both sides of the column. The fasteners 32 are respectively located on the upper and lower sides of the hinge point of the bracket 31, and the fasteners 32 are connected to the bracket 31;

[0068] Specifically, in the initial stage, when the connecting rod 21 rotates, the bracket 31 rotates synchronously with the connecting rod 21 under the action of the elastic member 7, and the bracket 31 drives the fasteners 32 on both sides of the column to approach and contact the column, thereby fixing the frame 1 on the column.

[0069] As a further solution of the present invention, the clamping structure 5 includes:

[0070] The telescopic members 51 are arranged in pairs and are rotatably arranged between the supporting plate 22 and the connecting rod 21;

[0071] The clamping plates 52 are arranged in pairs, slidingly arranged on the supporting plate 22 toward each other, and are rotatably arranged with the telescopic end of the telescopic member 51;

[0072] When the connecting rod 21 rotates relative to the bracket 31, the pneumatic structure 4 drives the clamping plates 52 to move closer to each other through the telescopic member 51, thereby completing the clamping of the beam;

[0073] Specifically, when the connecting rod 21 rotates relative to the bracket 31, the movable end of the telescopic member 51 extends and drives the splint 52 close to the beam until the splint 52 fixes the beam on the bearing plate 22, completing the relative fixation of the beam and the bearing plate 22, so that the beam can increase the pulling force between the column and the beam by pressing down the bearing plate 22.

[0074] As a further embodiment of the present invention, the pneumatic structure 4 includes a piston 41 and a sleeve 42. The piston 41 and the sleeve 42 are slidably arranged and fixed on the connecting rod 21 and the bracket 31 respectively. The sleeve 42 is connected to the telescopic member 51 through an air pipe.

[0075] Specifically, when the connecting rod 21 rotates relative to the bracket 31, the piston 41 moves into the sleeve 42, and the enclosed space formed between the sleeve 42 and the piston 41 gradually decreases. The gas in the enclosed space enters the telescopic member 51 through the air pipe, causing the telescopic end of the telescopic member 51 to extend, thereby clamping the crossbeam. After the crossbeam is clamped, the gas in the enclosed space can no longer enter the telescopic member 51 and is compressed. The compressed gas exerts a reverse force on the piston 41, increasing the rotation tendency of the bracket 31 fixed thereto, further increasing the fastening strength between the frame 1 and the column (in this process, the connecting rod 21 pulls the bracket 31 through the elastic member 7, increasing the compressed gas to generate thrust on the bracket 31 through the piston 41).

[0076] As a further aspect of the present invention, each fastener 32 comprises:

[0077] The fastening sleeve 33 is arranged between the brackets 31, and a connecting piece 34 is provided between the brackets 31. The connecting piece 34 is threadedly connected to the brackets 31, and the connecting piece 34 is plugged into the fastening sleeve 33. A limiting piece 35 is fixed on the side wall of the connecting piece 34 for limiting the position of the fastening sleeve 33;

[0078] Specifically, the connecting piece 34 is inserted into the fastening sleeve 33 from both sides, and the fastening sleeve 33 is limited by the limiting piece 35, which facilitates the assembly of the fastener 32 when assembling the welding tooling, and the fastener 32 can adjust the length of the fastener 32 according to the depth of the connecting piece 34 inserted into the fastening sleeve 33. The fastener 32 can fasten the frame 1 to columns of different sizes.

[0079] As a further solution of the present invention, the connecting rod 21 is coaxially fixed with a locking ring 61, and the locking ring 61 is coaxially provided with a locking plate 62. The adjacent surfaces of the locking ring 61 and the locking plate 62 are rough surfaces. The locking plate 62 is rotatably provided with a fastening bolt 63, and the fastening bolt 63 is threadedly connected to the rotating shaft 12; rotating the fastening bolt 63 can adjust the positive pressure between the locking plate 62 and the locking ring 61.

Claims

1. A metal frame welding tool for construction, comprising a frame (1), characterized in that: The frames (1) are arranged in pairs and covered on the column. The frames (1) are detachable and have roller groups (11) arranged inside. The frames (1) can move vertically relative to the column via the roller groups (11). The bearing portion (2) is rotatably mounted on the frame (1) via a rotating shaft (12), and is used to bear the crossbeam and rotate relative to the frame (1) by virtue of the gravity of the crossbeam; The fastening portion (3) is rotatably arranged on the frame (1) via the rotating shaft (12), rotates coaxially with the bearing portion (2), and an elastic member (7) is provided between the fastening portion (3) and the bearing portion (2); in the initial stage, the fastening portion (3) rotates synchronously with the bearing portion (2) via the elastic member (7), so that the fasteners (32) located on both sides of the column abut against the column, thereby achieving positioning of the frame (1); The clamping portion comprises a pneumatic structure (4) and a clamping structure (5), wherein the pneumatic structure (4) is installed between the bearing portion (2) and the fastening portion (3); the clamping structure (5) is installed on the bearing portion (2) and is used to position the crossbeam on the bearing portion (2); After the frame (1) is positioned, the bearing portion (2) rotates relative to the fastening portion (3) by compressing the elastic member (7), and the pneumatic structure (4) triggers the clamping structure (5) to clamp the beam, and the clamping force is proportional to the deflection angle of the bearing portion (2) relative to the fastening portion (3).

2. The metal frame welding tool for construction according to claim 1, characterized in that: The bearing portion (2) comprises: Connecting rod (21), each frame (1) is provided with a connecting rod (21) rotatably arranged via a rotating shaft (12), and the connecting rod (21) is rotatably arranged coaxially with the fastening portion (3); A bearing plate (22), the connecting rod (21) is provided with a bearing plate (22) for rotating together, and the bearing plate (22) is used to support the crossbeam; The connecting rod (21) can compress the elastic member (7) to rotate relative to the fastening portion (3). When the connecting rod (21) rotates relative to the fastening portion (3), the free end of the connecting rod (21) tilts downward, so that after the clamping structure (5) clamps the crossbeam, the gravity of the crossbeam is used to drive the connecting rod (21) to maintain rotational drive, thereby generating a pulling force between the column and the crossbeam.

3. The metal frame welding tool for construction according to claim 2, characterized in that: The bearing portion (2) further comprises a balancing member (23), wherein the balancing member (23) is mounted on the bottom of the bearing plate (22), and the balancing member (23) is located below the hinge point between the bearing plate (22) and the connecting rod (21).

4. The metal frame welding tool for construction according to claim 1, characterized in that: The fastening portion (3) comprises: The bracket (31) is coaxially rotatably arranged with the connecting rod (21), and the elastic member (7) is arranged between the bracket (31) and the connecting rod (21); There are at least two fasteners (32) respectively arranged on both sides of the column, and the fasteners (32) are respectively located on the upper and lower sides of the hinge point of the bracket (31), and the fasteners (32) are both connected to the bracket (31).

5. The metal frame welding tool for construction according to claim 1, characterized in that: The clamping structure (5) comprises: Telescopic members (51) are arranged in pairs and are rotatably arranged between the bearing plate (22) and the connecting rod (21); Pairs of clamping plates (52) are arranged on the supporting plate (22) to slide toward each other and are rotatably arranged with the telescopic end of the telescopic member (51); When the connecting rod (21) rotates relative to the bracket (31), the pneumatic structure (4) drives the clamping plates (52) to move closer to each other through the telescopic member (51), thereby completing the clamping of the crossbeam.

6. The metal frame welding tool for construction according to claim 5, characterized in that: The pneumatic structure (4) comprises a piston (41) and a sliding sleeve (42). The piston (41) and the sliding sleeve (42) are slidably arranged and fixed on the connecting rod (21) and the bracket (31) respectively. The sliding sleeve (42) is connected to the telescopic member (51) through an air pipe.

7. The metal frame welding tool for construction according to claim 4, characterized in that: Each of the fasteners (32) comprises: The fastening sleeve (33) is arranged between the brackets (31), and a connecting piece (34) is provided between the fastening sleeve (33) and the bracket (31). The connecting piece (34) is threadedly connected to the bracket (31), and the connecting piece (34) is plugged into the fastening sleeve (33). A limiting piece (35) for limiting the position of the fastening sleeve (33) is fixed on the side wall of the connecting piece (34).

8. The metal frame welding tool for construction according to claim 2, characterized in that: The connecting rod (21) is coaxially fixed with a locking ring (61), and the locking ring (61) is coaxially provided with a locking plate (62). The adjacent surfaces of the locking ring (61) and the locking plate (62) are rough surfaces. The locking plate (62) is rotatably provided with a fastening bolt (63), and the fastening bolt (63) is threadedly connected to the rotating shaft (12).

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