A welding positioning device for steel structure bridge box

Abstract

The present invention discloses a welding positioning device for a steel structure bridge box, comprising a rectangular positioning plate arranged along the extension direction of the weld, wherein one end of the positioning plate in the length direction is connected to a rotating shaft, and a movable baffle which can rotate around the rotating shaft is sleeved on the rotating shaft, and the movable baffle comprises a first baffle and a second baffle, and the first baffle and the second baffle are L-shaped, and a limiting block is arranged in the L-shaped cavity along the length direction of the positioning plate, and the rotating shaft is located at the connection between the first baffle and the second baffle, and the movable baffle is parallel to the ground, and a return fixing rod is provided at the end of the positioning plate in the length direction away from the rotating shaft, and a return spring is connected between the return fixing rod and the movable baffle, and when the welding machine moves along the weld, it pushes the movable baffle to rotate, and after passing the movable baffle, the rotated movable baffle automatically resets under the action of the spring, which can effectively improve the welding accuracy and the weld quality.

Description

Technical Field

[0001] The present invention relates to a field of science and technology, and in particular to a welding positioning device for a steel structure bridge box. Background Art

[0002] The yard plate of a steel structure bridge is an indispensable auxiliary tool for on-site processing of steel bridges. The yard plate fixes the position of two adjacent beam sections to be welded, fits the plane line shape of the bridge, and positions the on-site beam sections before welding. At present, when domestic production units process steel structure bridges, the yard plate is generally made of waste materials, fixed and fully welded between two adjacent boxes, and carbon dioxide gas shielded welding is used to weld the two adjacent boxes. After welding is completed, the yard plate needs to be removed and the surface of the box needs to be smoothed. This method is time-consuming and material-intensive, and when using a carbon dioxide gas welding device for welding, it is easy to cause spattering and poor forming, resulting in unstable welding quality and a greater impact on the environment. Summary of the Invention

[0003] In view of the above problems, the present invention provides a steel structure bridge box welding positioning device, which has the advantages of easy installation, reliable positioning, and improved welding quality.

[0004] The technical solution of the present invention is:

[0005] A welding positioning device for a steel structure bridge box comprises a rectangular positioning plate arranged along the extension direction of the weld, a rotating shaft being connected to one end of the positioning plate in the length direction, a movable baffle being sleeved on the rotating shaft and rotatable around the rotating shaft, the movable baffle comprising a first baffle and a second baffle, the first baffle and the second baffle being L-shaped, a limiting block being arranged in the L-shaped cavity along the length direction of the positioning plate, the rotating shaft being located at the connection between the first baffle and the second baffle, the movable baffle being parallel to the ground, a return fixing rod being provided at the end of the positioning plate in the length direction away from the rotating shaft, a return spring being connected between the return fixing rod and the movable baffle.

[0006] An arcuate through hole parallel to the ground is provided at the connection between the first baffle and the second baffle, a sliding block is movably provided in the arcuate through hole, one end of the return spring is connected to the sliding block, and the other end is connected to the return fixing rod.

[0007] A first positioning groove is provided on the side of the first baffle away from the rotation axis in the length direction, and a second positioning groove is provided on the side of the second baffle away from the rotation axis in the length direction. The first positioning groove and the second positioning groove are located in the L-shaped cavity of the first baffle and the second baffle.

[0008] A steel structure bridge box welding positioning device, the use method of which is as follows:

[0009] 1) Install positioning devices at intervals along the direction of the weld on one side of the bridge box to be welded to ensure that the weld remains fixed;

[0010] 2) Set up a track on the other side of the weld along the direction of the weld extension, set up a welding machine on the track, and point the welding gun head directly at the weld;

[0011] 3) The welding machine moves along the track, the gun head pushes the movable baffle of the positioning device, and after the movable baffle rotates 90 degrees, the gun head is separated from the positioning device, and the movable baffle is automatically reset under the action of the return spring.

[0012] The beneficial effects of the present invention are:

[0013] 1. The movable baffle is an L-shaped baffle that can rotate around the rotation axis. The rotation angle is controlled by a limit block. A spring is connected between the movable baffle and the return fixed rod. The spring can realize the automatic reset of the movable baffle. During welding operation, the welding gun head pushes the movable baffle when it moves to the welding position, which can accurately determine the welding position, improve welding accuracy, welding efficiency and weld quality, and reduce welding difficulty and strength;

[0014] 2. An arc-shaped through-hole is provided in the movable baffle, in which a sliding block is provided. The sliding block is connected to the spring. The movement of the sliding block in the arc-shaped through-hole realizes the stretching action of the spring, thereby improving the reliability of the connection and the accuracy of the return;

[0015] 3. Grooves are provided on both the first baffle and the second baffle. When the movable baffle rotates, the rotation angle is controlled by the connection between the grooves and the limiting columns, thereby improving the reliability of positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a steel structure bridge box welding positioning device according to an embodiment of the present invention;

[0017] Figure 2 This is a front view of a steel structure bridge box welding positioning device according to an embodiment of the present invention;

[0018] Figure 3 1 is a top view of a steel structure bridge box welding positioning device according to an embodiment of the present invention;

[0019] Figure 4 It is a schematic diagram of the use status of a steel structure bridge box welding positioning device described in an embodiment of the present invention.

[0020] Description of reference numerals:

[0021] 1 is a positioning plate, 2 is a rotating shaft, 3 is a movable baffle, 4 is a limit block, 5 is a return fixing rod, 6 is a return spring, 7 is a sliding block, 8 is a welding machine, 9 is a track, 10 is a welding seam, 31 is a first baffle, 32 is a second baffle, 33 is an arc-shaped through hole, 311 is a first positioning groove, and 321 is a second positioning groove. DETAILED DESCRIPTION

[0022] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0023] Example:

[0024] like Figures 1-4 As shown, a steel structure bridge box welding positioning device includes a rectangular positioning plate 1 arranged along the extension direction of the weld, a rotating shaft 2 is connected to one end of the positioning plate 1 in the length direction, and a movable baffle 3 that can rotate around the rotating shaft 2 is sleeved on the rotating shaft 2, and the movable baffle 3 includes a first baffle 31 and a second baffle 32, and the first baffle 31 and the second baffle 32 are L-shaped, and a limiting block 4 is arranged in the L-shaped cavity along the length direction of the positioning plate 1, and the rotating shaft 2 is located at the connection between the first baffle 31 and the second baffle 32, and the movable baffle 3 is parallel to the ground, and a return fixing rod 5 is provided at the end of the positioning plate 1 in the length direction away from the rotating shaft 2, and a return spring 6 is connected between the return fixing rod 5 and the movable baffle 3.

[0025] The working principle of the above technical solution is as follows:

[0026] A plurality of positioning devices are arranged along the extension direction of the weld on one side of the box to be welded, and a welding machine moving track is arranged along the extension direction of the weld. A submerged arc welding machine is arranged on the track, and the submerged arc welding machine is used for welding operations. When the welding machine moves, it pushes the movable baffle 3, and the movable baffle 3 rotates 90 degrees around the rotation axis 2. The welding machine disengages from the movable baffle, and the movable baffle 3 automatically resets under the action of the return spring 6. After the welding is completed, the positioning device is removed, which can improve the welding efficiency and weld quality, reduce welding spatter, and improve the accuracy and stability of welding.

[0027] like Figure 1-Figure 3 As shown, an arc-shaped through hole 33 parallel to the ground is provided at the connection between the first baffle 31 and the second baffle 32, and a sliding block 7 is movably provided in the arc-shaped through hole 33. One end of the return spring 6 is connected to the sliding block 7, and the other end is connected to the return fixing rod 5. The movement of the sliding block 7 in the arc-shaped through hole 33 realizes the stretching action of the spring, thereby improving the reliability of the connection and the accuracy of the return.

[0028] like Figure 1-Figure 3As shown, a first positioning groove 311 is provided on the side of the first baffle 31 away from the rotating shaft 2 in the length direction, and a second positioning groove 321 is provided on the side of the second baffle 32 away from the rotating shaft 2 in the length direction. The first positioning groove 311 and the second positioning groove 321 are located in the L-shaped cavity of the first baffle 31 and the second baffle 32. The opening diameters of the first positioning groove 311 and the second positioning groove 321 correspond to the size of the limit block 4. When the movable baffle 3 rotates, the rotation angle is controlled by the connection between the groove and the limit column 4, thereby improving the reliability of positioning.

[0029] The above-described embodiments merely represent specific implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A steel structure bridge box welding positioning device, characterized in that: The invention comprises a rectangular positioning plate (1) arranged along the extension direction of the weld, wherein one end of the positioning plate (1) in the longitudinal direction is connected to a rotating shaft (2), and a movable baffle (3) which can rotate around the rotating shaft (2) is sleeved on the rotating shaft (2), and the movable baffle (3) comprises a first baffle (31) and a second baffle (32), wherein the first baffle (31) and the second baffle (32) are L-shaped, and a limiting block (4) is arranged in the L-shaped cavity along the longitudinal direction of the positioning plate (1), and the rotating shaft (2) is located at the connection between the first baffle (31) and the second baffle (32), and the movable baffle (3) is parallel to the ground, and a return fixing rod (5) is arranged at one end of the positioning plate (1) in the longitudinal direction away from the rotating shaft (2), and a return spring (6) is connected between the return fixing rod (5) and the movable baffle (3); An arc-shaped through hole (33) parallel to the ground is provided at the connection between the first baffle (31) and the second baffle (32), a sliding block (7) is movably provided in the arc-shaped through hole (33), one end of the return spring (6) is connected to the sliding block (7), and the other end is connected to the return fixing rod (5); A first positioning groove (311) is provided on a side of the first baffle (31) that is away from the rotation axis (2) in the length direction, and a second positioning groove (321) is provided on a side of the second baffle (32) that is away from the rotation axis (2) in the length direction, wherein the first positioning groove (311) and the second positioning groove (321) are located in the L-shaped cavity of the first baffle (31) and the second baffle (32); The opening diameters of the first positioning groove (311) and the second positioning groove (321) correspond to the size of the limiting block (4).

2. A steel structure bridge box welding positioning device according to claim 1, characterized in that: Here’s how to use it: 1) Installing positioning devices at intervals along the extending direction of the weld (10) on one side of the bridge box to be welded to ensure that the weld (10) remains fixed; 2) A track (9) is arranged on the other side of the weld (10) along the extending direction of the weld, and a welding machine (8) is arranged on the track, with the gun head of the welding machine (8) facing the weld (10); 3) The welding machine (8) moves along the track (9), and the gun head pushes the movable baffle (3) of the positioning device. After the movable baffle (3) rotates 90 degrees, the gun head is separated from the positioning device, and the movable baffle (3) is automatically reset under the action of the return spring (6).

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