H-shaped steel beam welding fixing device

Abstract

The utility model relates to the field of steel bridges, in particular to an H-shaped steel beam welding and fixing device which comprises a welding supporting frame, a plurality of supporting legs are downwards arranged on the two sides of the welding supporting frame, and U-shaped supporting grooves are symmetrically and downwards welded to the bottom faces of the left side and the right side of an upper supporting plate of the welding supporting frame. An L-shaped support is outwards welded to the supporting leg, a threaded rod is in threaded connection with the interior of a threaded hole in the upper portion of the L-shaped support, a round pressing plate is fixed to the end of the threaded rod, and the round pressing plate corresponds to the welding position of the web and the flange plate; the front side and the rear side of the welding supporting frame are each provided with a supporting column, a telescopic shaft motor is fixed to each supporting column, and a U-shaped clamp is fixed to the end of each telescopic shaft motor and used for clamping a web. According to the welding fixing device, hoisting and manual extrusion fixing are not needed in the welding process, left-right and front-back displacement is avoided in the welding process, the welding quality is guaranteed, meanwhile, the labor intensity of workers is relieved, and the potential safety hazard that the workers extrude web plates and flange plates is eliminated.

Description

Technical Field

[0001] The utility model relates to the field of steel bridges, in particular to an H-shaped steel beam welding and fixing device. Background Art

[0002] H-beams are H-shaped steel beams manufactured using a welding process and are primarily used in the construction of long-span steel bridges. H-beam welding typically involves placing the web on a welding support frame, then hoisting the flanges on both sides for welding using an automatic welding machine or manual welding. Welding requires a tight fit between the flanges and the web, with no displacement during the welding process. However, current welding methods mostly utilize hoisting, with minimal tightening. Some still require manual tightening and flange positioning, increasing safety risks during construction and increasing labor intensity. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides an H-shaped steel beam welding and fixing device.

[0004] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0005] The U-shaped support groove is a kind of H-shaped steel beam welding and fixing device, which includes a welding support frame, a plurality of support legs are provided on both sides of the welding support frame, the width of the upper support plate of the welding support frame is equal to the width of the web of the H-shaped steel beam, the bottom surfaces of the left and right sides of the upper support plate are symmetrically welded downwardly with U-shaped support grooves, the inner width of the U-shaped support groove is equal to the thickness of the flange plate of the H-shaped steel beam, the inner side surface of the U-shaped support groove close to the welding support frame is on the same vertical plane as the outer side surface of the upper support plate, and the vertical distance between the inner bottom surface of the U-shaped support groove and the upper surface of the upper support plate is equal to the distance between the lower surface of the web and the flange The vertical distance between the bottom surfaces of the edge plates; the support legs are welded to an L-shaped bracket outward, and a threaded hole is provided on the upper part of the L-shaped bracket, and a horizontal screw is connected to the inner thread of the threaded hole, and a circular pressure plate is fixed to the end of the screw, and the circular pressure plate is located above the U-shaped support groove, and the circular pressure plate corresponds to the welding position of the web and the flange plate; a support column is provided on the front and rear sides of the welded support frame, a motor seat is fixed on the support column, a telescopic shaft motor is fixed on the motor seat, a U-shaped clamp is fixed to the end of the telescopic shaft of the telescopic shaft motor, and a bolt is provided on the U-shaped clamp, and the U-shaped clamp is used to clamp the web.

[0006] Preferably, the middle of the upper support plate is a hollow frame.

[0007] Preferably, a rubber pad is provided on the surface of the circular pressing plate.

[0008] Preferably, a straight handle is provided at the outer end of the screw.

[0009] Preferably, the length of the upper support plate is 10-20 cm shorter than the length of the web.

[0010] Preferably, the bottom surface of the U-shaped support groove is welded to the upper surface of the L-shaped bracket.

[0011] The welding fixing device of the utility model can make the web and flange plates of the H-shaped steel beam tightly attached during welding. There is no need for lifting or manual squeezing and fixing during welding. There is no left and right or front and back displacement during the welding process, which ensures the welding quality. At the same time, it reduces the labor intensity of workers and eliminates the safety hazard of workers squeezing the web and flange plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of the welding process of this embodiment;

[0013] Figure 2 This is a schematic diagram of the top view of the structure during welding of this embodiment;

[0014] Figure 3 This is a schematic diagram of the overall structure of the fixing device of this embodiment.

[0015] Figure 4 This is a schematic diagram of the overall top view of the fixing device of this embodiment;

[0016] Figure 5 This is a schematic diagram of a partially enlarged structure of this embodiment.

[0017] In the figure: 1 support leg; 2 upper support plate; 3 web; 4 U-shaped support groove; 5 flange plate; 6 L-shaped bracket; 7 screw; 8 circular pressure plate; 9 support column; 10 motor base; 11 telescopic shaft motor; 12 U-shaped clamp; 13 bolt; 14 straight handle. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 creative efforts are within the scope of protection of the present invention.

[0019] This embodiment includes a welded support frame with a plurality of support legs 1 provided downwardly on both sides of the welded support frame. In the solution of the present invention, the width of the upper support plate 2 of the welded support frame is just equal to the width of the web 3 of the H-shaped steel beam, and the length of the upper support plate 2 is slightly smaller than the length of the web 3, about 10-20 cm smaller. In order to reduce the weight of the welded support frame, it is preferred that the middle of the upper support plate 2 is a hollow frame, that is, a hollow portion is provided between the edges of the upper support plate 2, as shown in the attached figure. Figure 3 and 4 shown.

[0020] U-shaped support grooves 4 are welded symmetrically downward on the left and right bottom surfaces of the upper support plate 2. The two flange plates 5 of the H-shaped steel beam are respectively placed in the U-shaped support grooves 4 on both sides. At the same time, the U-shaped support grooves 4 also determine the placement height of the flange plates 5 to accurately locate the welding position of the flange plates 5 and the web plate 3, so that the web plate 3 is exactly located in the middle of the flange plates 5. Therefore, the inner width of the U-shaped support groove 4 is equal to the thickness of the flange plates 5 of the H-shaped steel beam. The inner side surface of the U-shaped support groove 4 close to the welded support frame is on the same vertical plane as the outer side surface of the upper support plate 2. The vertical distance between the inner bottom surface of the U-shaped support groove 4 and the upper surface of the upper support plate 2 is equal to the vertical distance between the lower surface of the web plate 3 and the bottom surface of the flange plates 5 after welding according to design requirements, that is, the web plate 3 is located in the middle of the flange plates 5.

[0021] An L-shaped bracket 6 is welded outwardly on each support leg 1 on both sides, and the bottom surface of the U-shaped support groove 4 is preferably welded to the upper surface of the L-shaped bracket 6. A threaded hole is provided on the upper part of the L-shaped bracket 6, and a screw rod 7 is connected to the thread in the threaded hole. The screw rod 7 is in a horizontal state, and a circular pressure plate 8 is fixed at the end of the screw rod 7. The circular pressure plate 8 is located above the U-shaped support groove 4, and the circular pressure plate 8 corresponds to the welding position of the web 3 and the flange plate 5. The circular pressure plate 8 is used to squeeze and fix the flange plate 5 so that the flange plate 5 and the web 3 are tightly attached when welded and no displacement occurs. In order to prevent damage to the surface of the flange plate 5 and increase friction, it is preferred that a rubber pad is provided on the surface of the circular pressure plate 8. The rubber pad directly contacts the flange plate 5 to squeeze the flange plate 5. In order to facilitate the twisting of the screw rod 7, it is preferred that a straight handle 14 is provided at the outer end of the screw rod 7.

[0022] To prevent web 3 from moving forward and backward, support columns 9 are installed on both the front and rear sides of the welded support frame. Support columns 9 are secured to the ground with anchor bolts 13. A motor base 10 is fixed to the upper surface of support columns 9. A telescopic shaft motor 11 is fixed to motor base 10. A U-shaped clamp 12 is fixed to the end of the telescopic shaft of telescopic shaft motor 11. U-shaped clamp 12 is used to clamp web 3. Bolts 13 are installed on U-shaped clamp 12. Tightening bolts 13 secures U-shaped clamp 12 to web 3.

[0023] When in use, first hoist the web 3 of the H-shaped steel beam onto the upper support plate 2, aligning the left and right sides of the web 3 with the left and right sides of the upper support plate 2, and extending a small section of the front and rear sides of the web 3 out of the upper support plate 2. Then, turn on the telescopic shaft motor 11, extend the telescopic shaft of the telescopic shaft motor 11, and allow the U-shaped clamp 12 to clamp the web 3 extending out of the upper support plate 2. Stop the telescopic shaft motor 11, and then tighten the bolts 13 to tightly clamp the U-shaped clamp 12 and the upper support plate 2 together, so that the U-shaped clamp 12 clamps the front and rear ends of the web 3 so that the web 3 no longer moves. Then hoist the flange plates 5 on both sides respectively, and place the flange plates 5 vertically downward in the U-shaped support groove 4, aligning the front and rear ends of the flange plates 5 with the front and rear ends of the web 3. Then, turn the screw 7 to allow the circular pressure plate 8 to squeeze the flange plates 5, so that the flange plates 5 and the web 3 are tightly attached together and no longer move left and right. After the flange plates 5 on both sides are fixed, use the automatic welding machine to weld the left and right edges of the upper surface of the web 3 to the flange plates 5. After welding is completed, loosen the screw 7 to move the circular pressure plate 8 away from the flange plates 5, loosen the bolts 13, turn on the telescopic shaft motor 11 to move the U-shaped clamp 12 away from the web 3, and then hoist and flip the welded web 3 and the two flange plates 5, and rotate the web 3 and the two flange plates 5 as a whole 180 degrees. The automatic welding machine and the hoisting and flipping equipment are commonly used equipment for H-beam welding, and will not be repeated here. Place the flange plates 5 in the U-shaped support groove 4 again, place the web 3 on the upper support plate 2, fix the flange plates 5 and the web 3 again, and then use the automatic welding machine to weld the left and right edges of the lower surface of the web 3 to the flange plates 5, and then complete the welding of the H-beam.

[0024] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An H-beam welding fixture, comprising a welding support frame, with a plurality of support legs (1) provided downwardly on both sides of the welding support frame, characterized in that: The width of the upper support plate (2) of the welded support frame is equal to the width of the web (3) of the H-shaped steel beam, the length of the upper support plate (2) is less than the length of the web (3), the left and right bottom surfaces of the upper support plate (2) are symmetrically welded downwardly with U-shaped support grooves (4), the inner width of the U-shaped support groove (4) is equal to the thickness of the flange plate (5) of the H-shaped steel beam, the inner side surface of the U-shaped support groove (4) close to the welded support frame is on the same vertical plane as the outer side surface of the upper support plate (2), and the vertical distance between the inner bottom surface of the U-shaped support groove (4) and the upper surface of the upper support plate (2) is equal to the vertical distance between the lower surface of the web (3) and the bottom surface of the flange plate (5); the support leg (1) is welded outwardly with an L-shaped support groove. A frame (6) is provided with a threaded hole on the upper part of the L-shaped bracket (6), a screw rod (7) is connected to the thread in the threaded hole, a circular pressure plate (8) is fixed to the end of the screw rod (7), the circular pressure plate (8) is located above the U-shaped support groove (4), and the circular pressure plate (8) corresponds to the welding position of the web (3) and the flange plate (5); a support column (9) is provided on the front and rear sides of the welding support frame, a motor seat (10) is fixed on the support column (9), a telescopic shaft motor (11) is fixed on the motor seat (10), a U-shaped clamp (12) is fixed to the end of the telescopic shaft of the telescopic shaft motor (11), a bolt (13) is provided on the U-shaped clamp (12), and the U-shaped clamp (12) is used to clamp the web (3).

2. The H-beam welding and fixing device according to claim 1, characterized in that: The middle of the upper support plate (2) is a hollow frame.

3. The H-beam welding and fixing device according to claim 1, characterized in that: A rubber pad is provided on the surface of the circular pressing plate (8).

4. The H-beam welding and fixing device according to claim 1, characterized in that: The outer end of the screw rod (7) is provided with a straight handle (14).

5. The H-beam welding and fixing device according to claim 1, characterized in that: The length of the upper support plate (2) is 10-20 cm shorter than the length of the web (3).

6. The H-beam welding and fixing device according to claim 1, characterized in that: The bottom surface of the U-shaped support groove (4) is welded to the upper surface of the L-shaped bracket (6).

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