Automatic welding and fixing device for end socket reinforcing ring

Abstract

The utility model discloses an end socket reinforcing ring automatic welding fixing device which comprises a rotating bottom plate, a fixed core seat and a self-aligning clamp, the fixed core seat is fixedly installed at the center position of the rotating bottom plate and comprises a base, an end cover, a pressing plate and a pressing bolt, the base is fixed on the rotating bottom plate, the top end of the base is fixedly connected with the end cover, and the pressing plate is fixedly connected with the self-aligning clamp. The end cover is in threaded connection with a compression bolt, the pressing plate is fixed to the end cover through the compression bolt and clamps a workpiece end socket, a plurality of aligning clamps are evenly arranged on the outer edge of the rotating bottom plate in the circumferential direction, each aligning clamp comprises a fixing block and a chuck, a clamping block is fixedly installed at the bottom of each fixing block, and the clamping blocks are correspondingly connected with the rotating bottom plate in an inserted mode. The chuck comprises a chuck upper portion and a chuck bottom, the chuck bottom is fixedly connected to the rotating bottom plate, the chuck upper portion slides front and back along the chuck bottom, a mounting hole is formed in the chuck upper portion, an adjusting shaft is rotationally connected into the mounting hole, and the adjusting shaft is in threaded connection with the fixing block. The automatic welding device is used for achieving automatic welding of a single end socket reinforcing ring.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, and in particular to an automatic welding and fixing device for a head reinforcement ring. Background Technology

[0002] Head reinforcing rings are an important product structure widely used in boilers, pressure vessels, and other products. They are primarily used to reinforce openings on head surfaces, such as manholes. Typically, the head is spherical, and the reinforcing ring is a perforated ring of a certain thickness. The required opening is first machined into the head, and then the reinforcing ring is welded to the opening location. A commonly used welding method is submerged arc welding. In actual production, two heads are often interlocked and then spot-welded to form a sphere. A mandrel is then passed between the two openings and fixed to a roller frame, thus meeting the welding conditions for submerged arc welding. However, this method requires the heads to be in pairs, which cannot be met in some cases. In addition, the heads may run around as they rotate with the mandrel, resulting in poor weld appearance and requiring additional machining or grinding processes. To improve weld formation and achieve automatic submerged arc welding of individual head reinforcement rings, one method is to introduce a positioner to fix the heads. However, the heads themselves are heavy and have curved surfaces, posing a safety risk of falling off during the use of the positioner. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model designs an automatic welding and fixing device for head reinforcement rings, which is used to solve the problem of automatic welding of a single head reinforcement ring.

[0004] The present invention adopts the following technical solution:

[0005] An automatic welding and fixing device for a head reinforcement ring includes a rotating base plate, a fixed core seat, and self-aligning fixtures. The rotating base plate is installed on a positioner. A fixed core seat is fixedly installed at the center of the rotating base plate. The fixed core seat includes a base, an end cover, a pressure plate, and a clamping bolt. The base is fixed on the rotating base plate, and the end cover is fixedly connected to the top of the base. The clamping bolt is threadedly connected to the end cover. The pressure plate is fixed to the end cover by the clamping bolt and clamps the workpiece head. Multiple self-aligning fixtures are evenly arranged around the outer edge of the rotating base plate. Each self-aligning fixture includes a fixing block, a chuck, a locking block, an adjusting shaft, and a cover plate. The locking block is fixedly installed at the bottom of the fixing block and is inserted into the rotating base plate. The chuck includes an upper part and a lower part. The lower part of the chuck is fixedly connected to the rotating base plate. The upper part of the chuck slides back and forth along the lower part of the chuck. An installation hole is opened in the upper part of the chuck, and an adjusting shaft is rotatably connected in the installation hole. The adjusting shaft is threadedly connected to the fixing block.

[0006] Preferably, a bearing is installed between the upper part of the chuck and the adjusting shaft.

[0007] Preferably, the fixing block is fixed to the rotating base plate by T-bolts.

[0008] Preferably, the base includes a base plate, a core tube, and stiffening plates. The base plate and stiffening plates are fixed to the core tube by welding, ensuring the flatness of the bottom surface of the base plate.

[0009] Preferably, the top end of the core tube is fixedly connected to the end cap by welding, ensuring the perpendicularity of the end cap face to the core tube axis.

[0010] Preferably, the base plate is fixedly connected to the rotating base plate by T-bolts.

[0011] Preferably, the fixing block, the chuck, and the adjusting shaft are coaxially assembled, and the adjusting shaft and the chuck are fixed by a cover plate.

[0012] The beneficial effects of this utility model are: (1) This utility model realizes the welding of the reinforcing ring of a single head by submerged arc automatic welding method; (2) This utility model can effectively reduce the jumping generated during the welding process, improve the weld formation quality, reduce additional machining and grinding processes, and reduce manufacturing costs; (3) This utility model improves the safety of the positioner equipment during use and effectively avoids the risk of workpiece falling. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a structural schematic diagram of a self-aligning clamp in this utility model.

[0015] In the diagram: 1. Fixed core seat, 11. Base, 12. End cap, 13. Pressure plate, 14. Clamping bolt, 15. T-bolt, 2. Self-aligning fixture, 21. Fixing block, 22. Chuck, 23. Clamping block, 24. Adjusting shaft, 25. Cover plate, 111. Base plate, 112. Rib plate, 113. Core tube, M. Rotating base plate, N. Workpiece end cap, Q. Workpiece reinforcing ring. Detailed Implementation

[0016] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0017] Example: As shown Figure 1 , Figure 2As shown, an automatic welding and fixing device for a head reinforcing ring includes a rotating base plate M, a fixed core seat 1, and a self-aligning clamp 2. The fixed core seat 1 includes a base 11, an end cap 12, a pressure plate 13, bolts 14, and T-bolts 15. The self-aligning clamp 2 includes a fixing block 21, a chuck 22, a locking block 23, an adjusting shaft 24, and a cover plate 25. The rotating base plate M is installed on a positioner device. Radial T-bolt holes are arranged at the center of the rotating base plate M for connecting the fixed core seat 1 via T-bolts 15. The end cap 12 is fixed to the upper end of the core tube 113 of the base 1 by welding, ensuring the perpendicularity of the end face of the end cap 12 to the axis of the core tube 113. The base plate 111 and the stiffening plate 112 are fixed to the core tube 113 by welding, ensuring the flatness of the bottom surface of the base plate 111. The base plate 111 has mounting holes, and the mounting positions match the T-bolt holes on the rotating base plate M. The base plate 111 and the rotating base plate M are connected and fixed by T-bolts 15. The base is fixed to the rotating base plate by T-bolts 15. The pressure plate is fixed to the end cap by bolts and realizes the clamping of the workpiece end cap. The fixing block 21, the chuck 22, and the adjusting shaft 24 are coaxially assembled. The adjusting shaft 24 and the chuck 22 are limited and fixed by the cover plate 25. The fixing block 21 is connected to the rotating base plate M by T-bolts 15. The chuck 22 includes an upper part of the chuck and a lower part of the chuck. The lower part of the chuck is fixedly connected to the rotating base plate M, and the upper part of the chuck slides back and forth along the lower part of the chuck.

[0018] Instructions for using this device:

[0019] Before using the device, such as Figure 1 As shown, the rotating base plate M is fixed to the transformer equipment, and the rotating base plate M is adjusted to be in a horizontal state. The fixing core seat 1 assembly is hoisted onto the rotating base plate M, and the T-bolt holes on the rotating base plate M are aligned. After adjusting the concentricity of the fixing core seat 1 and the rotating base plate M, the fixing core seat 1 and the rotating base plate M are assembled by the T-bolts 15, and the nuts are tightened. Figure 2As shown, a chuck 22, a fixing block 21, a T-bolt 15, and a locking block 23 are installed on the outer circumference of the rotating base plate. The locking block 23 is then inserted into the rotating base plate M. An adjusting shaft 24 is then installed, and a cover plate 25 is installed. After adjusting the axis of the adjusting shaft 24 to correspond to the center of the rotating base plate M, the T-bolt 15 is tightened. In this manner, multiple sets of self-aligning fixture 2 assemblies are installed on the rotating base plate M. The adjusting shaft 24 is rotated to move the chuck 22 toward the fixing block 21 until the area enclosed by the chucks 22 of each self-aligning fixture 2 assembly is greater than the outer diameter of the workpiece head N. Then, after the workpiece head N and the workpiece reinforcing ring Q are welded together, the workpiece is hoisted and placed on the rotating base plate M. The end cap 12 is inserted into the opening on the workpiece head N. The adjusting shaft 24 is rotated to make the chuck 22 clamp the workpiece head N until the workpiece head N and the fixed core seat 1 are concentric and the chuck 22 is clamping the workpiece head N. The pressure plate 13 is installed on the workpiece reinforcing ring Q, and the clamping bolt 14 is installed. Then, the positioner is controlled to adjust the rotating base plate M to a vertical state. The rotating base plate M rotates around the center, and the workpiece rotates accordingly, completing the weld between the workpiece reinforcing ring Q and the workpiece head N. After the weld between the workpiece reinforcing ring Q and the workpiece head N is completed, the positioner is controlled to adjust the rotating base plate M to a horizontal state. The clamping bolt 14 and the pressure plate 13 are removed. The adjusting shaft 24 is rotated to move the chuck 22 toward the fixed block 21 until the chuck 22 is completely released. Then, the workpiece is dropped off.

[0020] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. An automatic welding and fixing device for a head reinforcement ring, characterized in that, It includes rotating base plate, fixed core seat and aligning clamp, rotating base plate is installed on positioner equipment, fixed core seat is fixedly installed at rotating base plate center position, fixed core seat includes base, end cover, pressing plate and pressing bolt, base is fixed on rotating base plate, base top end is fixedly connected with end cover, end cover is threadedly connected with pressing bolt, pressing plate is fixed with end cover through pressing bolt and realizes clamping of workpiece head, a plurality of aligning clamps are evenly arranged along circumference on rotating base plate outer edge, each aligning clamp includes fixed block, chuck, clamping block, adjusting shaft and cover plate, fixed block bottom is fixedly installed with clamping block, clamping block is correspondingly inserted with rotating base plate, chuck includes chuck upper portion and chuck bottom portion, chuck bottom portion is fixedly connected on rotating base plate, chuck upper portion slides along chuck bottom portion front and back, chuck upper portion is provided with mounting hole, adjusting shaft is rotatably connected in mounting hole, adjusting shaft is threadedly connected with fixed block.

2. The device for automatic welding and fixing of a reinforcing ring of a head according to claim 1, characterized in that The chuck upper portion and the adjusting shaft are provided with a bearing therebetween.

3. The device for automatic welding and fixing of a reinforcing ring of a head according to claim 1, characterized in that The fixed block and the rotating base plate are fixed through T-shaped bolts.

4. The device for automatic welding and fixing of a reinforcing ring of a head according to claim 1, characterized in that The base includes a bottom plate, a core pipe and a rib plate, the bottom plate and the rib plate are fixed with the core pipe by welding, and the flatness of the bottom surface of the bottom plate is ensured.

5. The device for automatic welding and fixing of a reinforcing ring of a head according to claim 4, characterized in that The top end of the core pipe is fixedly connected with the end cover by welding, and the perpendicularity of the end face of the end cover to the axis of the core pipe is ensured.

6. The device for automatic welding and fixing of a reinforcing ring of a head according to claim 4, characterized in that The bottom plate is fixedly connected with the rotating base plate through T-shaped bolts.

7. The device for automatic welding and fixing of a reinforcing ring of a head according to claim 1, characterized in that The fixed block, the chuck and the adjusting shaft are coaxially assembled, and the adjusting shaft and the chuck are limitingly fixed through the cover plate.

Images