A square tube fixed splicing welding auxiliary device

Abstract

The utility model relates to a kind of fixed square tube splicing welding's auxiliary device, for ensuring the flatness of the butt joint of two square tubes, including flat plate and clamping unit, flat plate is laid between the top of two adjacent square tubes, flat plate two ends cross splicing position, respectively extend to the end of two square tubes;Flat plate two ends are provided with clamping unit, clamping unit includes connecting plate and tightening rod, flat plate end is provided with connecting plate, connecting plate lower end is bent to the below of square tube, and is screw-connected with tightening rod, tightening rod and flat plate cooperate and clamp adjacent two square tubes;Flat plate two ends are also provided with positioning plate, positioning plate is bent and presents " " shape, and is attached to the adjacent two side surfaces of square tube;Connecting plate is also screw-connected with hand screw bolt, hand screw bolt and positioning plate cooperate and clamp adjacent two square tubes.The utility model can satisfy square pipeline, when splicing welding, ensure that the two pipelines to be welded are stable and convenient for welding.

Description

Technical Field

[0001] This utility model relates to the field of welding tooling technology, and in particular to an auxiliary device for fixing square tube splicing welding. Background Technology

[0002] Depending on the actual conditions at the construction site, two square tubes are often welded together to form a longer square tube. During the butt welding of square tubes, manual hand-held welding or simple clamps are often used for fixing, which can lead to the following problems: manual hand-held welding has low positioning efficiency, requiring repeated adjustments to the position of the square tubes to ensure that the ends of the two square tubes are aligned; the hand-held welding is unstable and prone to displacement, resulting in uneven welds, etc.

[0003] Simple clamps, such as the fixing fixture for splicing square tubes disclosed in patent publication number CN211615357U, can butt two square tubes together. However, the square tubes need to be inserted into the fixing frame, and the elongated square tubes after welding need to be removed from the fixing frame. The entire process of removing and inserting the square tubes before and after welding is inconvenient. As a result, the welding construction efficiency is greatly reduced. In view of the above reasons, an auxiliary device for fixing square tube splicing welding is proposed. Summary of the Invention

[0004] To address the issues of low stability and difficulty in ensuring welding quality when using manual hand-held welding, this invention provides an auxiliary device for fixing square tubes during splicing welding. This device can quickly position two square tubes, preventing displacement of the pipes during welding and ensuring the flatness of the weld.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An auxiliary device for fixing square tube splicing welding, used to ensure the flatness of the joint of two square tubes, includes a straight plate and a clamping unit. The straight plate is laid between two adjacent square tubes, and the two ends of the straight plate extend beyond the splicing position to the ends of the two square tubes respectively. The clamping unit is provided at both ends of the flat plate. The clamping unit includes a connecting plate and a tightening rod. The connecting plate is provided at the end of the flat plate. The lower end of the connecting plate is bent around to the bottom of the square tube. The tightening rod is threaded to the lower end of the connecting plate. The tightening rod presses against the bottom of the square tube. The tightening rod and the flat plate cooperate to clamp two adjacent square tubes, so as to ensure that the two square tubes are aligned vertically.

[0006] Furthermore, the flat plate is an angle iron structure, with its horizontal section pressed tightly against the upper surface of the square tube. Using the flat plate as a limit, tightening the tightening rod ensures the square tube is firmly pressed against the flat plate.

[0007] Furthermore, the connecting plate is bent into a "C" shape, with its upper end fixedly connected to the flat plate and a nut provided at its lower end. The connecting plate is threadedly connected to the tightening rod via the nut, which facilitates the tightening rod's rotation. The tightening rod is arranged vertically.

[0008] Furthermore, the tightening rod includes a screw, a handle rod, and a bearing. The screw is threadedly connected to the nut, and the handle rod is provided at the lower end of the screw to facilitate turning the screw. The cross-section of the handle rod and the screw is "T" shaped after being connected and combined. The bearing is provided at the upper end of the screw and abuts against the lower surface of the square tube.

[0009] Furthermore, positioning plates are provided at both ends of the flat plate. The positioning plates are bent into an "X" shape and fit against the adjacent sides of the square tube. This ensures that the square tube can be aligned left and right.

[0010] Furthermore, the connecting plate is also threaded with a hand-tightening bolt, which, together with the positioning plate, clamps two adjacent square tubes. This improves the stability of the left-right alignment of the square tubes.

[0011] The beneficial effects of this utility model through the above technical solution are: This utility model features a reasonable structural design. Using a flat plate as a reference and with the assistance of a tightening rod, it can clamp two adjacent square tubes vertically, ensuring vertical alignment between them. Furthermore, using a positioning plate as a reference and with the aid of hand-tightened bolts, it can clamp two adjacent square tubes horizontally, ensuring horizontal alignment between them. This ensures the flatness of the welding reference surface, effectively improving the positioning accuracy of the square tube welding, thus guaranteeing stable alignment throughout the welding process and ensuring the quality of the weld. Attached Figure Description

[0012] Figure 1 This is a front view of an auxiliary device for fixing square tube splicing welding according to the present invention.

[0013] Figure 2 This is a side view of an auxiliary device for fixing square tube splicing and welding according to the present invention. In the figure, A represents the splicing and welding position of two adjacent square tubes.

[0014] Figure 3 This is a front view of Embodiment 2 of the auxiliary device for fixing square tube splicing welding of this utility model.

[0015] The attached diagram is labeled as follows: 1 flat plate, 101 horizontal section, 102 vertical section, 2 clamping unit, 3 connecting plate, 4 tightening rod, 41 screw, 42 handle rod, 43 bearing, 5 nut, 6 hand-tightening bolt, 7 positioning plate, 8 square tube. Detailed Implementation

[0016] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings: Example 1: like Figures 1-2 As shown, an auxiliary device for fixing the splicing and welding of square tubes is used to ensure the flatness of the joint of two square tubes 8. The auxiliary device includes a straight plate 1 and a clamping unit 2. The straight plate 1 is an angle iron structure, which is existing technology. The straight plate 1 includes a horizontal section 101 and a vertical section 102. The straight plate 1 is laid between two adjacent square tubes 8. The horizontal section 101 of the straight plate 1 is close to the upper surface of the square tube 8, and both ends of the straight plate 1 extend beyond the welding position of the two adjacent square tubes 8 to the adjacent ends of the two square tubes 8 respectively. Clamping units 2 are provided at both ends of the flat plate 1, and the clamping units 2 correspond to the ends of the square tube 8. The clamping units 2, in conjunction with the flat plate 1, can clamp the square tube 8. The clamping unit 2 includes a connecting plate 3 and a tightening rod 4. The connecting plate 3 is provided at the end of the flat plate 1. The connecting plate 3 is bent into a "C" shape, and the upper end of the connecting plate 3 is fixedly connected to the flat plate 1. The lower end of the connecting plate 3 is bent around to the bottom of the square tube 8, and the tightening rod 4 is threadedly connected to the lower end of the connecting plate 3. Specifically, a nut 5 is provided at the lower end of the connecting plate 3, and the connecting plate 3 is threadedly connected to the tightening rod 4 through the nut 5. The tightening rod 4 is arranged vertically.

[0017] The tightening rod 4 is operated to press upward against the bottom of the square tube 8, thereby the tightening rod 4 and the flat plate 1 can clamp two adjacent square tubes 8. In order to facilitate the operation of the tightening rod 4, the tightening rod 4 includes a screw 41, a handle rod 42 and a bearing 43. The screw 41 is threadedly connected to the nut 5. The handle rod is set at the lower end of the screw 41. The cross section of the handle rod and the screw 41 is "T" shaped after being connected and combined. The bearing 43 is set at the upper end of the screw 41. The upper end of the handle rod is inserted into the inner ring of the bearing 43 and connected and fixed to the inner ring of the bearing 43. The bearing 43 presses against the lower surface of the square tube 8.

[0018] The principle of this invention is as follows: Two adjacent square tubes 8 to be welded are placed on a carrier, such as a welding table or a common construction site block. The carrier supports the square tubes 8, and their positions are manually adjusted to ensure basic alignment. Then, this auxiliary device is installed at the welding point of the two square tubes 8. During installation, a flat plate 1 is first placed on the upper surface of the two square tubes 8, and then the tightening rod 4 is tightened to press against the lower surface of the tube. This ensures that the square tubes 8 are tightly against the flat plate 1, guaranteeing flush alignment between the upper and lower surfaces of the two square tubes 8, after which welding can proceed.

[0019] Note: Since the flat plate 1 is located on the upper surface of the square tube 8, it will block the upper surface of the square tube 8, affecting the welding of the upper surface. Here, you can first weld the left and right sides and the lower surface of the square tube 8, then remove this auxiliary device, and finally weld the upper surface of the square tube 8.

[0020] Example 2: This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The differences are as follows: Figure 3 As shown, in order to ensure that the upper and lower surfaces of the square tube 8 are aligned, positioning plates 7 are also provided at both ends of the flat plate 1 in order to achieve the left and right alignment of the two square tubes 8. The positioning plates 7 are positioned corresponding to the connecting plate 3. The positioning plates 7 are bent into a "𠃍" shape and fit against the two adjacent sides of the square tube 8, thereby ensuring the correspondence of the left and right sides of the square tube 8.

[0021] Meanwhile, the connecting plate 3 is also threaded with hand-tightening bolts 6, which are arranged horizontally. The hand-tightening bolts 6 and the positioning plate 7 work together to clamp the two adjacent square tubes 8, ensuring that the two square tubes 8 do not shift left or right. Combined with the straightening plate 1 and the tightening rod 4 mentioned above, the two square tubes 8 do not shift up or down, thus ensuring stable alignment between the square tubes 8. This ensures the flatness of the weld and improves the quality of the welding.

[0022] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. An auxiliary device for fixing the welding of square tubes, used to ensure the flatness of the butt joint of two square tubes (8), characterized in that, comprising a flat plate (1) and clamping units (2), wherein the flat plate (1) is laid between the upper sides of two adjacent square tubes (8), and both ends of the flat plate (1) extend beyond the splicing and welding position to reach the ends of the two square tubes (8) respectively; Both ends of the flat plate (1) are provided with the clamping units (2), each clamping unit (2) comprises a connecting plate (3) and a tightening rod (4), the end of the flat plate (1) is provided with the connecting plate (3), the lower end of the connecting plate (3) is bent to wrap around to the lower side of the square tube (8), the lower end of the connecting plate (3) is in threaded connection with the tightening rod (4), the tightening rod (4) abuts upward against the lower side of the square tube (8), and the tightening rod (4) and the flat plate (1) cooperate to clamp the two adjacent square tubes (8).

2. The auxiliary device for fixing square tube splicing welding according to claim 1, characterized in that, The flat plate (1) is of angle iron structure, and the horizontal section (101) of the flat plate (1) is closely attached to the upper surface of the square tube (8).

3. The auxiliary device for fixing square tube splicing welding according to claim 1, characterized in that, The connecting plate (3) is bent into a C shape, the upper end of the connecting plate (3) is fixedly connected with the flat plate (1), the lower end of the connecting plate (3) is provided with a nut (5), the connecting plate (3) is in threaded connection with the tightening rod (4) through the nut (5), and the tightening rod (4) is arranged vertically.

4. The auxiliary device for fixing square tube splicing welding according to claim 3, characterized in that, The tightening rod (4) comprises a screw rod (41), a handle rod (42) and a bearing (43), the screw rod (41) is in threaded connection with the nut (5), the lower end of the screw rod (41) is provided with the handle rod, the handle rod and the screw rod (41) are connected and combined to form a cross-shaped cross section, the upper end of the screw rod (41) is provided with the bearing (43), and the bearing (43) abuts against the lower surface of the square tube (8).

5. The auxiliary device for fixing square tube splicing welding according to claim 1, characterized in that, Both ends of the flat plate (1) are further provided with positioning plates (7), the positioning plates (7) are bent into a right-angled folded shape, and the positioning plates (7) are attached to two adjacent side surfaces of the square tube (8).

6. The auxiliary device for fixing square tube splicing welding according to claim 5, characterized in that, The connecting plate (3) is further in threaded connection with a hand-tightened bolt (6), and the hand-tightened bolt (6) and the positioning plate (7) cooperate to clamp the two adjacent square tubes (8).

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