Submerged-arc welding auxiliary tool

Abstract

The utility model relates to an auxiliary tool for submerged arc welding, which belongs to the field of welding tools and comprises a positioning column and a hydraulic cylinder, the positioning column is horizontally arranged, one end of the positioning column is in a circular truncated cone shape, the other end of the positioning column is connected with a piston end of the hydraulic cylinder, and the hydraulic cylinder is used for driving the positioning column to move along the length direction of the positioning column. A plurality of clamping jaws are arranged on the positioning column, distributed in the circumferential direction with the positioning column as the center and connected with a cylinder body of the hydraulic cylinder. The clamping jaw comprises a connecting rod, a rotating arm and a clamping block, the rotating arm is hinged to a cylinder body of the hydraulic cylinder through the connecting rod, and the connecting rod is obliquely arranged. The application range is expanded, and in addition, a connecting pipe fitting for assisting in lengthening does not need to be used, so that the operation convenience is improved.

Description

Technical Field

[0001] This utility model relates to an auxiliary tooling for submerged arc welding, belonging to the field of welding tooling. Background Technology

[0002] Submerged arc welding is a welding method in which an electric arc burns under a layer of flux. Its inherent advantages, such as stable weld quality, high welding productivity, no arc light, and very little smoke and dust, make it the main welding method in the fabrication of important steel structures such as pressure vessels, pipe sections, and box beams and columns.

[0003] Chinese utility model patent CN221791334U discloses a pipe welding device, a locking device for pipe welding, including a clamping seat, a hinge shaft, and a locking mechanism. The hinge shaft is located on one side of the clamping seat and is parallel to the front-back direction. The locking mechanism is located on the other side of the clamping seat. The clamping seat includes an upper body and a lower body, which are arranged symmetrically vertically. Each side of the upper and lower bodies has a clamping groove. The clamping grooves on the upper and lower bodies are arranged symmetrically vertically. The upper and lower bodies are hinged together by the hinge shaft. This utility model clamps the workpiece and the connecting pipe fitting with two clamping grooves, thus fixing the workpiece and the connecting pipe fitting. By connecting the connecting pipe fitting to a rotating device, the length between the workpiece and the arc welding machine is extended, facilitating normal arc welding of the workpiece. When disassembling the workpiece and the connecting pipe fitting, there is no need to cut, which not only avoids damage to the workpiece but also reduces work efficiency. However, the existing technology has a limited range of applicable pipe sizes, and the welding process requires the use of auxiliary extended connecting pipes, making the operation cumbersome.

[0004] Therefore, there is a need for an auxiliary tooling for submerged arc welding to expand its application range and improve ease of operation. Summary of the Invention

[0005] The technical problem to be solved by this utility model is: to overcome the shortcomings of the existing technology and provide a submerged arc welding auxiliary tooling that expands the scope of application and improves the ease of operation.

[0006] The technical solution adopted by this utility model to solve the above problems is as follows: a submerged arc welding auxiliary tooling, including a positioning column and a hydraulic cylinder. The positioning column is arranged horizontally, one end of the positioning column is frustum-shaped, and the other end of the positioning column is connected to the piston end of the hydraulic cylinder. The hydraulic cylinder is used to drive the positioning column to move along the length direction of the positioning column. The positioning column is provided with multiple grippers, which are distributed circumferentially around the positioning column. The grippers are connected to the cylinder body of the hydraulic cylinder.

[0007] The gripper includes a connecting rod, a rotating arm, and a gripping block. The rotating arm is hinged to the cylinder body of the hydraulic cylinder via the connecting rod. The connecting rod is arranged at an angle. The rotating arm is hinged to the end of the positioning column near the hydraulic cylinder. The gripping block is disposed on the rotating arm and is located on the side of the positioning column away from the hydraulic cylinder.

[0008] The rotating arm includes a rotating part and a telescopic part. The rotating part is hinged to the cylinder body of the hydraulic cylinder via a connecting rod. The rotating part is also hinged to one end of the positioning column near the hydraulic cylinder. The rotating arm is provided with a sliding groove. One end of the telescopic part is inserted into the sliding groove. The clamping block is rotatably connected to the other end of the telescopic part. The telescopic part matches the sliding groove. The telescopic part is locked to the rotating part by a locking member.

[0009] Preferably, the number of grippers is three.

[0010] Preferably, the locking element is a locking screw.

[0011] Preferably, the clamping block is provided with anti-slip texture.

[0012] Preferably, the telescopic part is a cuboid.

[0013] Preferably, the clamping block is made of rubber.

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] This utility model discloses an auxiliary tooling for submerged arc welding. By setting a frustum end on the positioning column and a sliding connection between the telescopic part and the rotating part, it is easy to apply to tubular workpieces of different lengths and inner diameters, thus expanding the scope of application. Moreover, it eliminates the need for auxiliary extension connecting pipes, improving the convenience of operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a submerged arc welding auxiliary tooling according to the present invention;

[0017] Figure 2 This is a schematic diagram of the connection structure between the gripper and the clamping block;

[0018] Figure 3 for Figure 2 A sectional view;

[0019] Figure 4 This is a schematic diagram of the clamping block.

[0020] in:

[0021] Positioning pin 1, hydraulic cylinder 2, gripper 3;

[0022] Linkage 31, rotating arm 32, clamping block 33, anti-slip texture 34;

[0023] Rotating part 321, telescopic part 322, locking screw 323. Detailed Implementation

[0024] like Figure 1-4 As shown, a submerged arc welding auxiliary tooling in this embodiment includes a positioning column 1 and a hydraulic cylinder 2. The positioning column 1 is arranged horizontally, one end of the positioning column 1 is frustum-shaped, and the other end of the positioning column 1 is connected to the piston end of the hydraulic cylinder 2. The hydraulic cylinder 2 is used to drive the positioning column 1 to move along the length direction of the positioning column 1. The positioning column 1 is provided with multiple grippers 3, which are evenly distributed around the positioning column 1. The specific number of grippers 3 is three, and the grippers 3 are connected to the cylinder body of the hydraulic cylinder 2.

[0025] The gripper 3 includes a connecting rod 31, a rotating arm 32, and a gripping block 33. The rotating arm 32 is hinged to the cylinder body of the hydraulic cylinder 2 via the connecting rod 31. The connecting rod 31 is arranged at an angle. The rotating arm 32 is hinged to the end of the positioning post 1 that is closer to the hydraulic cylinder 2. The gripping block 33 is disposed on the rotating arm 32 and is located on the side of the positioning post 1 away from the hydraulic cylinder 2.

[0026] The rotating arm 32 includes a rotating part 321 and a telescopic part 322. The rotating part 321 is hinged to the cylinder body of the hydraulic cylinder 2 via a connecting rod 31. The rotating part 321 is also hinged to one end of the positioning column 1 near the hydraulic cylinder 2. The rotating arm 32 is provided with a sliding groove. One end of the telescopic part 322 is inserted into the sliding groove. The clamping block 33 is rotatably connected to the other end of the telescopic part 322. The telescopic part 322 matches the sliding groove. The telescopic part 322 is locked to the rotating part 321 by a locking member, which is a locking screw 323.

[0027] During operation, the cylinder body of hydraulic cylinder 2 is fixedly set in the installation position, and the tubular workpiece is coaxially abutted against the frustum end of positioning column 1, that is, the tubular workpiece abuts against the conical surface of the frustum end. Then, hydraulic cylinder 2 is activated, causing positioning column 1 to move towards the cylinder body of hydraulic cylinder 2, that is, driving positioning block and tubular workpiece to move synchronously. At the same time, the movement of positioning column 1 also drives rotating arm 32 to move synchronously. Since rotating arm 32 is hinged to cylinder body of hydraulic cylinder 2 through connecting rod 31, rotating arm 32 rotates around the hinge point between rotating arm 32 and positioning column 1, thereby causing clamping block 33 to rotate towards the axis of positioning column 1, so that clamping block 33 clamps on the outer peripheral wall of tubular workpiece, realizing the clamping and fixing of tubular workpiece.

[0028] After the tubular workpiece is welded, it is then removed. The removal process is the reverse of the clamping and fixing process for the tubular workpiece.

[0029] Of course, during operation, the positioning column 1 can also be fixed in the installation position, and the tubular workpiece can be coaxially abutted against the frustum end of the positioning column 1, that is, the tubular workpiece abuts against the conical surface of the frustum end. Then, the hydraulic cylinder 2 is started, causing the piston end of the hydraulic cylinder 2 to retract into the cylinder body of the hydraulic cylinder 2, that is, the distance between the cylinder body of the hydraulic cylinder 2 and the positioning column 1 is reduced, and the connecting rod 31 drives the rotating arm 32 to rotate around the hinge point between the rotating arm 32 and the positioning column 1, thereby causing the clamping block 33 to rotate towards the axis of the positioning column 1, so that the clamping block 33 clamps on the outer peripheral wall of the tubular workpiece, thereby achieving the clamping and fixing of the tubular workpiece.

[0030] Here, when clamping and fixing the tubular workpiece, the clamping block 33 abuts against the outer wall of the end of the tubular workpiece away from the positioning post 1, and the abutment between the tubular workpiece and the frustum end of the positioning post 1 is used to support both ends of the tubular workpiece, thereby improving the stability of clamping the tubular workpiece.

[0031] Moreover, since the positioning post 1 is provided with a frustum end, it can be applied to tubular workpieces with different inner diameters;

[0032] In addition, when the length of the tubular workpiece changes, loosen the locking screw 323 to allow the telescopic part 322 to move in the slide groove. The moving distance depends on the length of the tubular workpiece. After the movement is completed, tighten the locking screw 323 to lock the telescopic part 322 and the rotating part 321.

[0033] Secondly, since the clamping block 33 is rotatably connected to the telescopic part 322, it is easy to adjust the angle of the clamping block 33 to ensure that the clamping surface of the clamping block 33 is in contact with the outer peripheral wall of the tubular workpiece.

[0034] The clamping block 33 is provided with anti-slip texture 34, which increases the friction between the clamping block 33 and the tubular workpiece and improves the stability of clamping.

[0035] The telescopic part 322 is a cuboid, which prevents the telescopic part 322 from sliding circumferentially during the movement of the telescopic part 322 in the slide groove, and plays a role in guiding the movement.

[0036] The clamping block 33 is made of rubber.

[0037] In summary, by setting a frustum end on the positioning column 1 and a sliding connection between the telescopic part 322 and the rotating part 321, it is easy to apply to tubular workpieces of different lengths and inner diameters, thus expanding the scope of application. Moreover, compared with the prior art, there is no need to use auxiliary lengthening connecting pipes, which improves the convenience of operation.

[0038] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A welding auxiliary tooling for submerged arc welding, characterized in that: It includes a positioning column (1) and a hydraulic cylinder (2). The positioning column (1) is arranged horizontally. One end of the positioning column (1) is frustum-shaped. The other end of the positioning column (1) is connected to the piston end of the hydraulic cylinder (2). The hydraulic cylinder (2) is used to drive the positioning column (1) to move along the length direction of the positioning column (1). The positioning column (1) is provided with multiple grippers (3). The multiple grippers (3) are distributed circumferentially around the positioning column (1). The grippers (3) are connected to the cylinder body of the hydraulic cylinder (2). The gripper (3) includes a connecting rod (31), a rotating arm (32), and a clamping block (33). The rotating arm (32) is hinged to the cylinder body of the hydraulic cylinder (2) through the connecting rod (31). The connecting rod (31) is arranged at an angle. The rotating arm (32) is hinged to the end of the positioning column (1) near the hydraulic cylinder (2). The clamping block (33) is set on the rotating arm (32). The clamping block (33) is located on the side of the positioning column (1) away from the hydraulic cylinder (2). The rotating arm (32) includes a rotating part (321) and a telescopic part (322). The rotating part (321) is hinged to the cylinder body of the hydraulic cylinder (2) through a connecting rod (31). The rotating part (321) is hinged to the end of the positioning column (1) near the hydraulic cylinder (2). The rotating arm (32) is provided with a sliding groove. One end of the telescopic part (322) is inserted into the sliding groove. The clamping block (33) is rotatably connected to the other end of the telescopic part (322). The telescopic part (322) matches the sliding groove. The telescopic part (322) is locked to the rotating part (321) through a locking member.

2. The submerged arc welding auxiliary tooling according to claim 1, characterized in that: The specific number of the grippers (3) is three.

3. The submerged arc welding auxiliary tooling according to claim 1, characterized in that: The locking component is a locking screw (323).

4. The submerged arc welding auxiliary tooling according to claim 1, characterized in that: The clamping block (33) is provided with anti-slip texture (34).

5. The submerged arc welding auxiliary tooling according to claim 1, characterized in that: The telescopic part (322) is a cuboid.

6. The submerged arc welding auxiliary tooling according to claim 1, characterized in that: The clamping block (33) is made of rubber.

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