Clamp for welding steel pipe for steel structure building

Abstract

The invention belongs to the field of welding clamps, and particularly relates to a steel pipe welding clamp for a steel structure building, the steel pipe welding clamp comprises a clamping main plate, clamping side plates are arranged on the two sides of the clamping main plate, and a rotating assembly and a side position fixing assembly are arranged on the side faces of the clamping main plate and the clamping side plates. The rotating assembly is arranged on the side face of the clamping main plate, when the welding angle of a steel pipe needs to be changed, a hand-held rod can be swung so that the plane end of the hand-held rod can be attached to the upper surface of an elastic connecting frame, a gap can be formed in the upper side of the elastic connecting frame, and under the action of a reset piece, the upper side and the lower side of the elastic connecting frame can be opened; at the moment, the sawteeth cannot be tightly meshed with the tooth grooves in the upper side of the annular plate, the clamping side plate can be moved to change the welding angle, then the hand-held rod can be rotated to enable the elastic connecting frame to be tightly connected with the annular plate again, and then angle change of the clamping side plate is achieved.

Description

Technical Field

[0001] The invention belongs to the field of welding fixtures, and in particular relates to a fixture for welding steel pipes used in steel structure buildings. Background Art

[0002] The steel pipe welding fixture for steel structure buildings is a special tool used to fix and position the steel pipes to be welded during steel structure construction, ensuring that they maintain a stable position and precise docking relationship during the welding process. It can effectively improve the welding quality, accuracy and efficiency, and avoid welding deviations caused by stress or thermal deformation of the steel pipes. It is an indispensable auxiliary device in the steel structure welding process.

[0003] Existing publication number CN114227130A discloses a steel pipe welding clamp for steel structure buildings, which includes a bearing mechanism; the bearing mechanism is the welding clamp body, and adjustment mechanisms are installed on both sides of the top of the bearing mechanism; the adjustment mechanism, the adjustment parts on the adjustment mechanism are installed on both sides of the top of the main body on the bearing mechanism; the moving mechanism, the moving mechanism is installed on the adjustment mechanism, and there are four groups of moving mechanisms in total; the control mechanism, the control mechanism is installed on the top of the bearing mechanism, and the control mechanism is located between the adjustment mechanisms; the installation mechanism, the installation mechanism is installed on the control mechanism.

[0004] The existing steel pipe welding fixtures for steel structure buildings still have the following shortcomings: In the existing steel pipe welding clamps, most of them use fixed side brackets fixedly connected to the side of the main bracket, so that the main steel pipe and the side steel pipe can only be connected according to a fixed connection direction and angle. In construction, steel pipes with multi-angle welding structures are required, and the existing clamps will have disadvantages in use. Summary of the Invention

[0005] The purpose of the present invention is to provide a steel pipe welding clamp for steel structure buildings in order to solve the problem that the fixed steel pipe welding clamp proposed in the above background technology has disadvantages in use during construction.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a clamp for welding steel pipes for steel structure buildings, comprising a clamping main board, clamping side plates are provided on both sides of the clamping main board, a rotating assembly and a side fixing assembly are provided on the sides of the clamping main board and the clamping side plates, the side fixing assembly is provided between the rotating assembly and the clamping main board, a clamping assembly is provided on the upper side of the clamping main board and the clamping side plates, and the clamping assembly includes an elastic clamping structure and an upper fixing structure.

[0007] Further, the rotating assembly comprises two elastic connecting frames, the two elastic connecting frames are fixedly connected to the two sides of the clamping main plate, the side surface of the elastic connecting frame is provided with an inner groove, a penetrating shaft is penetratingly arranged in the elastic connecting frame, the upper end of the penetrating shaft penetrates the upper surface of the elastic connecting frame, and a hand holding rod is rotationally connected to the outer side of the penetrating shaft.

[0008] Further, the inner top surface of the inner groove is fixedly connected with a plurality of sawteeth in an annular array, the penetrating shaft penetrates and slidingly connects with a ring plate, the ring plate is arranged in the inner groove, the upper surface of the ring plate is provided with a plurality of tooth grooves in an annular array, the sawteeth and the tooth grooves are meshed with each other, the inner groove is internally provided with two reset members, the reset member comprises an embedded spring, the embedded spring is fixedly connected between the inner top surface and the inner bottom surface of the inner groove, two piston rods are fixedly connected between the inner top surface and the inner bottom surface of the inner groove, the piston rods are arranged on the inner side of the embedded spring, the side surface of the clamping side plate is fixedly connected with an outer connecting frame, a main rod is rotationally connected in the outer connecting frame, and one end of the main rod away from the outer connecting frame is fixedly connected to the side surface of the ring plate.

[0009] Further, the side position fixing assembly comprises a sliding frame, the two sides of the clamping main plate are provided with sliding grooves, the sliding frame is slidingly connected in the sliding groove, the upper surface and the lower surface of the sliding frame are fixedly connected with clamping members, the side surface of the clamping side plate is fixedly connected with an inner connecting frame, a secondary rod is rotationally connected in the inner connecting frame, and the distal end of the secondary rod away from the inner connecting frame is rotationally connected in the sliding frame.

[0010] Further, the clamping member comprises a fixing frame, the fixing frame is fixedly connected to the upper surface of the sliding frame, two pairs of fixed clamping plates are fixedly connected to the side surface of the fixing frame away from the clamping main plate, a clamping rod is rotationally connected in each of the two pairs of fixed clamping plates, two groups of clamping grooves are provided on the two sides of the clamping main plate, the two groups of clamping grooves are provided on the upper and lower sides of the sliding groove, and the clamping rod is clampingly connected in the clamping groove.

[0011] Further, the elastic clamping structure comprises a plurality of clamping members, the clamping member comprises two receiving blocks, the upper surfaces of the two receiving blocks are provided as arc surfaces, a bent rod is penetratingly and rotationally connected in each of the two receiving blocks, the bent rod is fixedly connected to the upper surface of the clamping side plate, a reset spring is fixedly connected to the lower surface of the receiving block, and one end of the reset spring away from the receiving block is fixedly connected to the upper surface of the clamping side plate.

[0012] Furthermore, the upper fixed structure includes a side bracket, which is fixedly connected to the side of the clamping main board. A transmission groove is provided on the side of the side bracket close to the clamping main board. A No. 1 threaded rod is rotatably connected between the top surface and the inner bottom surface of the transmission groove. A micro motor is fixedly connected to the upper surface of the side bracket, and the output end of the micro motor passes through the transmission groove and is fixedly connected to the upper end of the No. 1 threaded rod. The No. 1 threaded rod passes through and is threadedly connected to a transmission block, and an upper side limit piece is provided on the transmission block close to the side of the clamping main board.

[0013] Furthermore, the upper side limit member includes a transmission box, which is fixedly connected to the side of the transmission block, and a No. 2 threaded rod is passed through and threadedly connected to the upper surface of the transmission box, and the upper end of the No. 2 threaded rod is fixedly connected to a handle, and the lower end of the No. 2 threaded rod is fixedly connected to a main connecting rod, and side connecting rods are provided on both sides of the main connecting rod, and a rotating shaft is rotatably connected to the side connecting rod, and the rotating shaft is fixedly connected to the inner side of the transmission box, and the upper end of the side connecting rod is tightly attached to the side of the main connecting rod.

[0014] Compared with the existing technology, the advantages of this steel pipe welding fixture for steel structure buildings are: 1. The present invention is provided with a rotating component on the side of the clamping main plate. When the welding angle of the steel pipe needs to be changed, the handrail can be swung so that the flat end of the handrail fits into the upper surface of the elastic connecting frame, which can create a gap on the upper side of the elastic connecting frame. Under the action of the reset member, the upper and lower sides of the elastic connecting frame will open. At this time, the serrations and the upper tooth grooves of the ring plate cannot form a tight meshing relationship. The clamping side plate can then be moved to change the welding angle, and then the handrail can be rotated again to make the elastic connecting frame and the ring plate tightly connected again, thereby achieving the change of the angle of the clamping side plate.

[0015] 2. The present invention is provided with a side fixing component. When the rotating component is moving, the clamping rod can be disengaged from the clamping slot first. At this time, the sliding frame slides in the sliding slot under the driving action of the auxiliary rod. When the movement of the clamping side plate is completed, the clamping rod can be re-clamped in the clamping slot to complete the fixation of the clamping side plate.

[0016] 3. The present invention is provided with a clamping assembly, which can place the main steel pipe and the side steel pipe on the surface of the elastic clamping structure on the upper side of the clamping main plate and the clamping side plate respectively. At this time, the rotation of the No. 1 threaded rod can be driven by a micro motor to control the displacement of the transmission block, thereby realizing the movement of the upper limit member. By rotating the handle and the No. 2 threaded rod, the up and down movement of the main connecting rod can be controlled, thereby realizing the extrusion of the side connecting rod and the clamping of the side of the steel pipe by the side connecting rod. Because the upper side of the steel pipe is squeezed and fixed, the steel pipe is punched downward, which will press the receiving block to move downward. At this time, the inclined receiving block will clamp and fix the lower side of the steel pipe, thereby realizing the clamping and fixation of steel pipes of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the subjective structure of a steel pipe welding fixture for steel structure buildings provided by the present invention; Figure 2 This is a schematic structural diagram of the inner cross-section of an elastic connecting frame of a clamp for welding steel pipes for steel structure buildings provided by the present invention; Figure 3 This is a schematic structural diagram of a fixing assembly of a steel pipe welding fixture for steel structure buildings provided by the present invention; Figure 4 yes Figure 3 Enlarged view of part A; Figure 5 This is a schematic diagram of an elastic clamping structure of a steel pipe welding fixture for steel structure buildings provided by the present invention; Figure 6 The present invention is a schematic diagram of the upper fixing structure of a steel pipe welding clamp for steel structure buildings.

[0018] In the figure, 11 clamping main board, 11 clamping side plate, 12 bending rod, 13 receiving block, 14 return spring, 2 side brackets, 21 transmission groove, 22 micro motor, 23 No. 1 threaded rod, 24 transmission block, 3 transmission box, 31 main connecting rod, 32 rotating shaft, 33 side connecting rod, 34 No. 2 threaded rod, 35 handle, 4 elastic connecting frame, 41 through shaft, 42 handrail, 43 inner groove, 44 ring plate, 45 tooth groove, 46 built-in spring, 47 piston rod, 48 outer connecting frame, 49 main rod, 5 inner connecting frame, 51 auxiliary rod, 52 slide groove, 53 card slot, 54 sliding frame, 55 fixed frame, 56 card connecting rod. DETAILED DESCRIPTION

[0019] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0020] like Figures 1-6 As shown, a steel pipe welding clamp for steel structure buildings includes a clamping main plate 1, clamping side plates 11 are provided on both sides of the clamping main plate 1, a rotating component and a side fixing component are provided on the sides of the clamping main plate 1 and the clamping side plates 11, the side fixing component is provided between the rotating component and the clamping main plate 1, and a clamping component is provided on the upper side of the clamping main plate 1 and the clamping side plates 11, and the clamping component includes an elastic clamping structure and an upper fixing structure; The rotating assembly includes two elastic connecting frames 4, which are fixedly connected to the two sides of the clamping main board 1. The side of the elastic connecting frame 4 is provided with an inner groove 43. A through-shaft 41 passes through the elastic connecting frame 4. The upper end of the through-shaft 41 passes through the upper surface of the elastic connecting frame 4. The outer side of the through-shaft 41 is rotatably connected to a handrail 42. The inner top surface of the inner groove 43 is fixedly connected with a plurality of serrations in an annular array, and the through shaft 41 passes through and is slidably connected with a ring plate 44, which is arranged in the inner groove 43. The upper surface of the ring plate 44 is provided with a plurality of tooth grooves 45 in an annular array, and the serrations and tooth grooves 45 are engaged with each other. Two reset members are provided in the inner groove 43, and the reset members include a built-in spring 46, which is fixedly connected between the inner top surface and the inner bottom surface of the inner groove 43. Two piston rods 47 are fixedly connected between the inner top surface and the inner bottom surface of the inner groove 43, and the piston rod 47 is provided on the inner side of the built-in spring 46. The side surface of the clamping side plate 11 is fixedly connected with an outer connecting frame 48, and the outer connecting frame 48 is rotatably connected with a main rod 49. The end of the main rod 49 away from the outer connecting frame 48 is fixedly connected to the side of the ring plate 44. A rotating assembly is provided on the side of the clamping main plate 1. When the angle of the steel pipe welding needs to be changed, the hand holding rod 42 can be swung so that the flat end of the hand holding rod 42 fits the upper surface of the elastic connecting frame 4, which can create a gap on the upper side of the elastic connecting frame 4. Under the action of the reset member, the upper and lower sides of the elastic connecting frame 4 will open. At this time, the serrations and the upper tooth grooves 45 of the ring plate 44 cannot form a tight meshing relationship. The clamping side plate 11 can be moved to change the welding angle, and then the hand holding rod 42 can be rotated again to make the elastic connecting frame 4 and the ring plate 44 tightly connected again, thereby achieving the change of the angle of the clamping side plate 11. The side fixing assembly includes a sliding frame 54. Slide grooves 52 are provided on both sides of the clamping main plate 1. The sliding frame 54 is slidably connected to the slide grooves 52. The upper and lower surfaces of the sliding frame 54 are fixedly connected to the clamping side plate 11. The inner connecting frame 5 is fixedly connected to the side surface of the clamping side plate 11. The auxiliary rod 51 is rotatably connected to the inner connecting frame 5. The end of the auxiliary rod 51 away from the inner connecting frame 5 is rotatably connected to the sliding frame 54. The clamping member includes a fixing frame 55, which is fixedly connected to the upper surface of the sliding frame 54. The fixing frame 55 is fixedly connected to two pairs of fixing clamping plates on the side away from the clamping main board 1. The two pairs of fixing clamping plates are rotatably connected with a clamping rod 56. Two sets of clamping grooves 53 are provided on both sides of the clamping main board 1. The two sets of clamping grooves 53 are provided on the upper and lower sides of the slide 52. The clamping rod 56 is clamped and connected to the clamping groove 53. By providing a side fixing component, when the rotating component is in the process of moving, the clamping rod 56 can be disengaged from the clamping groove 53 first. At this time, the sliding frame 54 slides in the slide 52 under the driving action of the auxiliary rod 51. When the movement of the clamping side plate 11 is completed, the clamping rod 56 can be re-clamped in the clamping groove 53, thereby completing the fixation of the clamping side plate 11; The elastic clamping structure includes a plurality of clamping members, each of which includes two receiving blocks 13. The upper surfaces of the two receiving blocks 13 are configured as arc surfaces. A bent rod 12 is passed through and rotatably connected to the two receiving blocks 13. The bent rod 12 is fixedly connected to the upper surface of the clamping side plate 11. A return spring 14 is fixedly connected to the lower surface of the receiving block 13. The end of the return spring 14 away from the receiving block 13 is fixedly connected to the upper surface of the clamping side plate 11. The upper fixed structure includes a side bracket 2, which is fixedly connected to the side of the clamping mainboard 1. A transmission groove 21 is opened on the side of the side bracket 2 close to the clamping mainboard 1. A No. 1 threaded rod 23 is rotatably connected between the top surface and the bottom surface of the transmission groove 21. A micro motor 22 is fixedly connected to the upper surface of the side bracket 2. The output end of the micro motor 22 passes through the transmission groove 21 and is fixedly connected to the upper end of the No. 1 threaded rod 23. The No. 1 threaded rod 23 passes through and is threadedly connected to a transmission block 24. The transmission block 24 is provided with an upper side limiter close to the side of the clamping mainboard 1. The upper limit member includes a transmission box 3, which is fixedly connected to the side of the transmission block 24. The upper surface of the transmission box 3 is penetrated and threadedly connected with a No. 2 threaded rod 34. The upper end of the No. 2 threaded rod 34 is fixedly connected to a handle 35. The lower end of the No. 2 threaded rod 34 is fixedly connected to the main connecting rod 31. Side connecting rods 33 are provided on both sides of the main connecting rod 31. The side connecting rod 33 is rotatably connected to the rotating shaft 32. The rotating shaft 32 is fixedly connected to the inner side of the transmission box 3. The upper end of the side connecting rod 33 is tightly attached to the side of the main connecting rod 31. By providing a clamping assembly, the main steel pipe and the side steel pipe can be placed on the upper side of the clamping main board 1 and the clamping side plate 11 respectively. The surface of the elastic clamping structure can drive the rotation of the No. 1 threaded rod 23 through the micro motor 22, thereby controlling the displacement of the transmission block 24, and realizing the movement of the upper limit member. By rotating the handle 35 and the No. 2 threaded rod 34, the up and down movement of the main connecting rod 31 is controlled, thereby realizing the extrusion of the side connecting rod 33, and realizing the clamping of the side connecting rod 33 on the side of the steel pipe. Because the upper side of the steel pipe is squeezed and fixed, the steel pipe is punched downward, and the receiving block 13 is pressed to move downward. At this time, the inclined receiving block 13 will clamp and fix the lower side of the steel pipe, thereby realizing the clamping and fixation of steel pipes of different diameters.

[0021] The working principle of the present invention is as follows: By providing a rotating assembly on the side of the clamping main plate 1, when the angle of the steel pipe welding needs to be changed, the handrail 42 can be swung so that the flat end of the handrail 42 fits against the upper surface of the elastic connecting frame 4, which can create a gap on the upper side of the elastic connecting frame 4. Under the action of the reset member, the upper and lower sides of the elastic connecting frame 4 will open. At this time, the serrations and the upper tooth grooves 45 of the ring plate 44 cannot form a tight meshing relationship. Then, the clamping side plate 11 can be moved to change the welding angle, and then the handrail 42 can be rotated again to reconnect the elastic connecting frame 4 and the ring plate 44 tightly, thereby achieving the change of the angle of the clamping side plate 11. By providing a side fixing assembly, when the rotating assembly is moving, the clamping rod 56 can be first disengaged from the clamping groove 53. At this time, the sliding frame 54 slides in the sliding groove 52 under the driving action of the auxiliary rod 51. When the movement of the clamping side plate 11 is completed, the clamping rod 56 can be re-engaged in the clamping groove 53, thereby completing the fixing of the clamping side plate 11. By providing a clamping assembly, the main steel pipe and the side steel pipe can be placed on the surface of the elastic clamping structure on the upper side of the clamping main plate 1 and the clamping side plate 11 respectively. At this time, the rotation of the No. 1 threaded rod 23 can be driven by the micro motor 22, thereby controlling the displacement of the transmission block 24, thereby realizing the movement of the upper limit member. By rotating the handle 35 and the No. 2 threaded rod 34, the up and down movement of the main connecting rod 31 is controlled, thereby realizing the squeezing of the side connecting rod 33, and realizing the clamping of the side of the steel pipe by the side connecting rod 33. Because the upper side of the steel pipe is squeezed and fixed, the steel pipe is punched downward, and the receiving block 13 will be pressed to move downward. At this time, the inclined receiving block 13 will clamp and fix the lower side of the steel pipe, thereby realizing the clamping and fixation of steel pipes of different diameters.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steel pipe welding fixture for steel structure buildings, characterized in that: The invention comprises a clamping main board (1), both sides of the clamping main board (1) are provided with clamping side plates (11), the sides of the clamping main board (1) and the clamping side plates (11) are provided with a rotating assembly and a side fixing assembly, the side fixing assembly is arranged between the rotating assembly and the clamping main board (1), the upper sides of the clamping main board (1) and the clamping side plates (11) are provided with a clamping assembly, and the clamping assembly comprises an elastic clamping structure and an upper fixing structure.

2. The steel pipe welding fixture for steel structure buildings according to claim 1, characterized in that: The rotating assembly includes two elastic connecting frames (4), the two elastic connecting frames (4) are fixedly connected to the two sides of the clamping main board (1), the side of the elastic connecting frame (4) is provided with an inner groove (43), the elastic connecting frame (4) is penetrated by a through shaft (41), the upper end of the through shaft (41) penetrates the upper surface of the elastic connecting frame (4), and the outer side of the through shaft (41) is rotatably connected to a handrail (42).

3. The steel pipe welding fixture for steel structure buildings according to claim 2, characterized in that: The inner top surface of the inner groove (43) is fixedly connected with a plurality of saw teeth in an annular array. The through shaft (41) passes through and is slidably connected with a ring plate (44). The ring plate (44) is arranged in the inner groove (43). The upper surface of the ring plate (44) is provided with a plurality of tooth grooves (45) in an annular array. The saw teeth and the tooth grooves (45) are engaged with each other. Two reset members are provided in the inner groove (43). The reset members include a built-in spring (46). The built-in spring ( 46) is fixedly connected between the inner top surface and the inner bottom surface of the inner groove (43), and two piston rods (47) are fixedly connected between the inner top surface and the inner bottom surface of the inner groove (43), and the piston rods (47) are arranged on the inner side of the built-in spring (46). The side surface of the clamping side plate (11) is fixedly connected to the outer connecting frame (48), and the main rod (49) is rotatably connected inside the outer connecting frame (48), and the end of the main rod (49) away from the outer connecting frame (48) is fixedly connected to the side surface of the ring plate (44).

4. The steel pipe welding fixture for steel structure buildings according to claim 1, characterized in that: The side fixing assembly includes a sliding frame (54), and both sides of the clamping main plate (1) are provided with sliding grooves (52). The sliding frame (54) is slidably connected in the sliding grooves (52). The upper surface and the lower surface of the sliding frame (54) are fixedly connected with a clamping piece. The side of the clamping side plate (11) is fixedly connected with an inner connecting frame (5), and a secondary rod (51) is rotatably connected in the inner connecting frame (5). The end of the secondary rod (51) away from the inner connecting frame (5) is rotatably connected in the sliding frame (54).

5. The steel pipe welding fixture for steel structure buildings according to claim 4, characterized in that: The clamping member includes a fixing frame (55), which is fixedly connected to the upper surface of the sliding frame (54). The fixing frame (55) is fixedly connected to two pairs of fixed clamping plates on the side away from the clamping main board (1). The two pairs of fixed clamping plates are rotatably connected to the clamping rods (56). Two groups of clamping grooves (53) are opened on both sides of the clamping main board (1). The two groups of clamping grooves (53) are opened on the upper and lower sides of the sliding groove (52), and the clamping rods (56) are clamped and connected in the clamping grooves (53).

6. The steel pipe welding fixture for steel structure buildings according to claim 1, characterized in that: The elastic clamping structure includes a plurality of clamping members, and the clamping members include two receiving blocks (13). The upper surfaces of the two receiving blocks (13) are set as arc surfaces. A bent rod (12) is passed through and rotatably connected to the two receiving blocks (13). The bent rod (12) is fixedly connected to the upper surface of the clamping side plate (11). The lower surface of the receiving block (13) is fixedly connected to a reset spring (14). The end of the reset spring (14) away from the receiving block (13) is fixedly connected to the upper surface of the clamping side plate (11).

7. The steel pipe welding fixture for steel structure buildings according to claim 1, characterized in that: The upper fixed structure includes a side bracket (2), the side bracket (2) is fixedly connected to the side of the clamping main board (1), the side bracket (2) is provided with a transmission groove (21) near the side of the clamping main board (1), a No. 1 threaded rod (23) is rotatably connected between the top surface and the bottom surface of the transmission groove (21), a micro motor (22) is fixedly connected to the upper surface of the side bracket (2), the output end of the micro motor (22) passes through the transmission groove (21) and is fixedly connected to the upper end of the No. 1 threaded rod (23), the No. 1 threaded rod (23) passes through and is threadedly connected to a transmission block (24), and an upper side limiter is provided on the transmission block (24) near the side of the clamping main board (1).

8. The steel pipe welding fixture for steel structure buildings according to claim 7, characterized in that: The upper limit member includes a transmission box (3), the transmission box (3) is fixedly connected to the side of the transmission block (24), the upper surface of the transmission box (3) is penetrated by and threadedly connected to a second threaded rod (34), the upper end of the second threaded rod (34) is fixedly connected to a handle (35), the lower end of the second threaded rod (34) is fixedly connected to a main connecting rod (31), side connecting rods (33) are provided on both sides of the main connecting rod (31), a rotating shaft (32) is rotatably connected inside the side connecting rod (33), the rotating shaft (32) is fixedly connected to the inner side of the transmission box (3), and the upper end of the side connecting rod (33) is closely attached to the side of the main connecting rod (31).

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