High-strength corrosion-resistant stainless steel large-diameter three-way horizontal type annular welding machine

Abstract

The invention belongs to the technical field of welding devices, and particularly relates to a high-strength corrosion-resistant stainless steel large-diameter tee joint horizontal ring welding machine which comprises a rack. The horizontal girth welding assembly is fixedly connected to one end of the top of the rack; the clamping assembly is fixedly connected to the other end of the top of the rack; the object carrying moving assembly is movably arranged on the rack, located between the horizontal type ring welding assembly and the clamping assembly and used for carrying the large-diameter tee joint; and the protection part is fixedly connected to the rack. Compared with traditional manual welding, the device has the advantages that the labor intensity of operators is greatly reduced, and the production efficiency is remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding devices, and in particular relates to a high-strength, corrosion-resistant stainless steel large-diameter three-way horizontal ring welding machine. Background Art

[0002] Surround welding on the outer surface of a large-diameter tee made of high-strength and corrosion-resistant stainless steel generally relies on manual welding by electric welders. During manual welding, the welding quality is unstable, the solder is uneven, and there is often too much solder in some local areas or too little solder in some local areas. The welding quality is unqualified, which increases the difficulty of later processing, consumes too much manpower, time, and energy, uses a lot of solder, and wastes materials. During manual welding, the labor intensity of the operator is high, which is not conducive to improving production efficiency or controlling production costs. Summary of the invention

[0003] The purpose of the present invention is to provide a high-strength corrosion-resistant stainless steel large-diameter three-way horizontal ring welding machine to solve the above problems.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] A high-strength, corrosion-resistant stainless steel large-caliber three-way horizontal ring welding machine, comprising:

[0006] frame;

[0007] A horizontal ring welding assembly is fixedly connected to one end of the top of the frame;

[0008] A clamping assembly, fixedly connected to the other end of the top of the frame;

[0009] An object moving assembly is movably arranged on the frame, the object moving assembly is located between the horizontal ring welding assembly and the clamping assembly, and the object moving assembly is used to load a large-diameter tee;

[0010] The protection part is fixedly connected to the frame.

[0011] Preferably, the clamping assembly includes a first mounting plate, the first mounting plate is fixedly connected to one end of the frame, the top of the first mounting plate is fixedly connected to the bottom end of the first mounting frame, the top side of the first mounting frame is fixedly connected to the fixed end of the first telescopic part, the movable end of the first telescopic part is fixedly connected to a fixing clamp, and the fixing clamp is used to fix the large-diameter tee.

[0012] Preferably, the first telescopic portion comprises a first telescopic rod, a fixed end of the first telescopic rod is fixedly connected to one side of a top end of the first mounting bracket, and a movable end of the first telescopic rod is fixedly connected to the fixing fixture.

[0013] Preferably, the fixing clamp comprises a clamp mounting plate, one side of the middle portion of the clamp mounting plate is fixedly connected to the movable end of the first telescopic rod, and the front and rear sides of the clamp mounting plate are rotatably connected to two symmetrically arranged clamping parts respectively.

[0014] Preferably, the clamping portion includes an arc-shaped concave abutment block, the upper and lower ends of which are rotatably connected to one end of a connecting arm via a rotating shaft and a torsion spring, the other end of the connecting arm is fixedly connected to the clamp mounting plate, and one side of the arc-shaped concave abutment block is provided with an arc-shaped concave surface for abutting against the outer wall of the large-diameter tee.

[0015] Preferably, the object moving assembly includes a second mounting plate, the second mounting plate is fixedly connected to the top of the frame, two slides are respectively fixedly connected to the front and rear sides of the top of the second mounting plate, the slides are slidably matched with slide grooves, the two slide grooves are respectively fixedly connected to the front and rear sides of the bottom of the slide plate, the top of the slide plate is fixedly connected to a fixed end of a lifting part, the movable end of the lifting part is fixedly connected to a lifting plate, the lifting plate is slidably connected to a support plate via a second slide rail, the sliding direction of the support plate is perpendicular to the length direction of the slide, and the support plate is used to hold the large-diameter tee.

[0016] Preferably, the lifting part comprises a lifting telescopic rod, a fixed end of the lifting telescopic rod is fixedly connected to the center of the top of the slide plate, and a movable end of the lifting telescopic rod is fixedly connected to the center of the bottom of the lifting plate.

[0017] Preferably, the horizontal ring welding assembly comprises a horizontal welding gun seat, and the horizontal welding gun seat is fixed to the frame via a second mounting frame;

[0018] An annular slide groove is coaxially provided on the horizontal welding gun seat, an arc-shaped slide block is slidably connected in the annular slide groove, a fixed end of a multi-axis mechanical arm is fixedly connected to the arc-shaped slide block, a welding gun is fixedly connected to the movable end of the multi-axis mechanical arm, and the welding tip of the welding gun is arranged toward the welding seam of the large-diameter tee;

[0019] The arc-shaped slider is fixedly connected to the outer wall of the inner gear ring, the inner gear ring is coaxially rotatably arranged on the horizontal welding gun seat, the inner side of the inner gear ring is meshed with a first driving gear, the first driving gear shaft is connected to the output shaft of the first driving motor, and the fixed end of the first driving motor is fixedly connected to the horizontal welding gun seat;

[0020] An axial positioning support device for positioning and fixing the large-caliber tee is provided in the middle of the horizontal welding gun seat, and the axial positioning support device is transmission-connected to a second driving gear, the second driving gear shaft is connected to the output shaft of a second driving motor, and the fixed end of the second driving motor is fixedly connected to the horizontal welding gun seat.

[0021] Preferably, the axial positioning support device includes a fixed shaft, one end of the fixed shaft is coaxially fixed to the horizontal welding gun seat, the other end of the fixed shaft is coaxially fixed to a fixed plate, a plurality of sliding grooves are circumferentially evenly spaced on the fixed plate, a sliding arm is slidably connected in the sliding groove, one end of the sliding arm is fixed to a top block, the other end of the sliding arm is fixed to a circular column, the circular column is slidably connected with an arcuate sliding groove, a plurality of the arcuate sliding grooves are circumferentially evenly spaced on the same rotating plate, the rotating plate is rotatably connected to the fixed shaft, and the rotating plate is meshed with the second driving gear.

[0022] Preferably, the protection part comprises two protection plates, and the protection plates are fixedly connected to the front and rear sides of the frame.

[0023] Compared with the prior art, the present invention has the following advantages and technical effects:

[0024] When in use, place the large-diameter tee on the load-carrying moving assembly, move the large-diameter tee to the specified position by the load-carrying moving assembly, clamp the large-diameter tee between the horizontal ring welding assembly and the clamping assembly by the clamping assembly to fix the large-diameter tee, and then start the horizontal ring welding assembly to weld the weld on the large-diameter tee. The welding process does not require manual operation, and the operator can be outside the protective part and observe the welding process through the protective part. Compared with traditional manual welding, the labor intensity of the operator is greatly reduced and the production efficiency is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 It is a top view of the structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0029] Figure 4 For the present invention Figure 3 A partial enlarged view of the middle part;

[0030] Figure 5 This is a schematic diagram of the internal structure of the present invention from another angle;

[0031] Figure 6 This is a front view of the internal structure of the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the horizontal ring welding assembly of the present invention;

[0033] Figure 8 This is an exploded view of the axial positioning support device of the present invention;

[0034] Among them, 1, frame; 2, first mounting plate; 3, first mounting frame; 4, first telescopic rod; 5, fixing fixture; 6, large-diameter tee; 7, protective plate; 8, second mounting plate; 9, slideway; 10, slide plate; 11, slide groove; 12, support plate; 13, lifting plate; 14, second slide rail; 15, lifting telescopic rod; 16, horizontal welding gun seat; 17, arc slider; 18, multi-axis robot arm; 19, welding gun; 20, annular slide groove; 21, inner gear ring; 22, first driving gear ; 23. Second driving gear; 24. First driving motor; 25. Second driving motor; 26. Second mounting bracket; 27. Axial positioning support device; 501. Clamp mounting plate; 502. Connecting arm; 503. Rotating shaft and torsion spring; 504. Arc-shaped concave abutment block; 2701. Fixed shaft; 2702. Rotating disk; 2703. Arc-shaped slide groove; 2704. Top block; 2705. Sliding arm; 2706. Circular column; 2707. Fixed disk; 2708. Sliding groove. DETAILED DESCRIPTION

[0035] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Reference Figures 1 to 8 The present invention discloses a high-strength, corrosion-resistant stainless steel large-caliber three-way horizontal ring welding machine, comprising:

[0038] Rack 1;

[0039] A horizontal ring welding assembly is fixed to one end of the top of the frame 1;

[0040] A clamping assembly, fixedly connected to the other end of the top of the frame 1;

[0041] The object moving assembly is movably arranged on the frame 1, and the object moving assembly is located between the horizontal ring welding assembly and the clamping assembly, and the object moving assembly is used to load the large-diameter tee 6;

[0042] The protection part is fixed on the frame 1.

[0043] When in use, the large-diameter tee 6 is placed on the load-carrying moving assembly. After the large-diameter tee 6 is moved to the specified position by the load-carrying moving assembly, the large-diameter tee 6 is clamped between the horizontal ring welding assembly and the clamping assembly by the clamping assembly to fix the large-diameter tee 6. Then the horizontal ring welding assembly is started to weld the weld on the large-diameter tee 6. The welding process does not require manual operation. The operator can be located outside the protective part and observe the welding process through the protective part. Compared with traditional manual welding, the labor intensity of the operator is greatly reduced and the production efficiency is significantly improved.

[0044] A further optimized solution is that the clamping assembly includes a first mounting plate 2, the first mounting plate 2 is fixedly connected to one end of the frame 1, the top of the first mounting plate 2 is fixedly connected to the bottom end of the first mounting frame 3, the top side of the first mounting frame 3 is fixedly connected to the fixed end of the first telescopic part, the movable end of the first telescopic part is fixedly connected to the fixing clamp 5, and the fixing clamp 5 is used to fix the large-diameter tee 6.

[0045] According to a further optimized solution, the first telescopic portion includes a first telescopic rod 4 , a fixed end of the first telescopic rod 4 is fixedly connected to one side of the top end of the first mounting frame 3 , and a movable end of the first telescopic rod 4 is fixedly connected to a fixing fixture 5 .

[0046] According to a further optimization scheme, the fixing clamp 5 comprises a clamp mounting plate 501, one side of the middle portion of the clamp mounting plate 501 is fixedly connected to the movable end of the first telescopic rod 4, and the front and rear sides of the clamp mounting plate 501 are rotatably connected to two symmetrically arranged clamping parts.

[0047] To further optimize the solution, the clamping part includes an arc-shaped concave abutment block 504, the upper and lower ends of which are rotatably connected to one end of a connecting arm 502 through a rotating shaft and a torsion spring 503 respectively, and the other end of the connecting arm 502 is fixedly connected to the clamp mounting plate 501, and one side of the arc-shaped concave abutment block 504 is provided with an arc-shaped concave surface for abutting against the outer wall of the large-diameter tee 6.

[0048] After the object moving assembly carries the large-diameter tee 6 into place, before starting the horizontal ring welding assembly, the first telescopic rod 4 is extended to move the two arc-shaped concave abutment blocks 504 on the fixture mounting plate 501 close to the large-diameter tee 6, and the arc-shaped concave surface on the arc-shaped concave abutment block 504 is used to contact the side wall of the large-diameter tee 6. The arc-shaped concave abutment block 504 is connected to the fixture mounting plate 501 through a rotating shaft and a torsion spring 503. Under the action of the torsion spring, the arc-shaped concave abutment block 504 can abut against the side wall of the large-diameter tee 6, and can adapt to the changing angle between the arc-shaped concave abutment block 504 and the fixture mounting plate 501 according to the specifications of different large-diameter tees 6.

[0049] A further optimized solution is provided, in which the load moving assembly includes a second mounting plate 8, which is fixedly connected to the top of the frame 1, and two slideways 9 are respectively fixedly connected to the front and rear sides of the top of the second mounting plate 8, and the slideways 9 are slidably matched with slide grooves 11, and the two slide grooves 11 are respectively fixedly connected to the front and rear sides of the bottom of the slide plate 10, and a fixed end of a lifting part is fixedly connected to the top of the slide plate 10, and a lifting plate 13 is fixedly connected to the movable end of the lifting part, and a support plate 12 is slidably connected to the lifting plate 13 through a second slide rail 14, and the sliding direction of the support plate 12 is perpendicular to the length direction of the slideway 9, and the support plate 12 is used to hold the large-diameter tee 6.

[0050] According to a further optimized solution, the lifting part includes a lifting telescopic rod 15 , a fixed end of the lifting telescopic rod 15 is fixedly connected to the top center of the slide plate 10 , and a movable end of the lifting telescopic rod 15 is fixedly connected to the bottom center of the lifting plate 13 .

[0051] When in use, the slide plate 10 can drive the lifting telescopic rod 15, the support plate 12 and the lifting plate 13 to move horizontally through the cooperation of the slide groove 11 and the slideway 9. The support plate 12 and the lifting plate 13 can realize the horizontal movement of the support plate 12 through the cooperation of the second slide rail 14, and the moving direction of the support plate 12 is perpendicular to the moving direction of the slide plate 10 in space, so as to realize the movement in the X and Y directions on the horizontal plane. The height of the support plate 12 can be changed by the lifting telescopic rod 15, and the large-diameter tee 6 is placed on the support plate 12. Since the support plate 12 can realize three-way movement of the X, Y and Z axes, the position of the large-diameter tee 6 can be conveniently adjusted.

[0052] According to a further optimized solution, the horizontal ring welding assembly includes a horizontal welding gun seat 16, and the horizontal welding gun seat 16 is fixedly connected to the frame 1 through a second mounting frame 26;

[0053] An annular slide groove 20 is coaxially provided on the horizontal welding gun seat 16, and an arc-shaped slide block 17 is slidably connected in the annular slide groove 20. A fixed end of a multi-axis mechanical arm 18 is fixedly connected to the arc-shaped slide block 17, and a welding gun 19 is fixedly connected to the movable end of the multi-axis mechanical arm 18. The welding tip of the welding gun 19 is arranged toward the welding seam of the large-diameter tee 6;

[0054] The arc-shaped slider 17 is fixedly connected to the outer wall of the inner gear ring 21, and the inner gear ring 21 is coaxially rotatably arranged on the horizontal welding gun seat 16. The inner side of the inner gear ring 21 is meshed with a first driving gear 22, and the first driving gear 22 is axially connected to the output shaft of the first driving motor 24. The fixed end of the first driving motor 24 is fixedly connected to the horizontal welding gun seat 16;

[0055] An axial positioning support device 27 for positioning and fixing the large-caliber tee 6 is provided in the middle of the horizontal welding gun seat 16. The axial positioning support device 27 is transmission-connected to the second drive gear 23. The second drive gear 23 is axially connected to the output shaft of the second drive motor 25. The fixed end of the second drive motor 25 is fixedly connected to the horizontal welding gun seat 16.

[0056] A further optimized solution is provided, in which the axial positioning support device 27 comprises a fixed shaft 2701, one end of the fixed shaft 2701 is coaxially fixed to the horizontal welding gun seat 16, the other end of the fixed shaft 2701 is coaxially fixed to a fixed plate 2707, a plurality of sliding grooves 2708 are circumferentially evenly spaced on the fixed plate 2707, a sliding arm 2705 is slidably connected in the sliding groove 2708, a top block 2704 is fixed to one end of the sliding arm 2705, a circular column 2706 is fixed to the other end of the sliding arm 2705, an arcuate sliding groove 2703 is slidably connected to the circular column 2706, a plurality of arcuate sliding grooves 2703 are circumferentially evenly spaced on the same rotating plate 2702, the rotating plate 2702 is rotatably connected to the fixed shaft 2701, and the rotating plate 2702 is meshed with the second driving gear 23.

[0057] When in use, after placing the large-diameter tee 6 on the support plate 12, it is first moved to a position close to the fixed disk 2707, so that the fixed disk 2707 extends into the inner side of the horizontal section of the large-diameter tee 6, and then the second driving motor 25 drives the second driving gear 23 to rotate and drive the rotating disk 2702 to rotate. When the rotating disk 2702 rotates, each circular column 2706 slides in the arc-shaped slide groove 2703, and each sliding arm 2705 can be driven to slide in the sliding groove 2708 to make each top block 2704 extend and abut against the inner side wall of the horizontal section of the large-diameter tee 6. In this process, since each top block 2704 moves synchronously, the circle where the outer side wall of each top block 2704 is located is coaxial with the horizontal welding gun seat 16, and the large-diameter tee can be automatically tightened during the tightening process. The horizontal section of the tee 6 is coaxial with the horizontal welding gun seat 16. At this time, the position of the support plate 12 can be adjusted to lift it, which can automatically complete the function of automatically coaxial movement trajectory of the welding gun 19 and the weld of the large-diameter tee 6. After the large-diameter tee 6 is erected, the first driving motor 24 drives the first driving gear 22 to rotate and drives the inner gear ring 21 to rotate. The arc slider 17 is driven by the inner gear ring 21 to drive the multi-axis mechanical arm 18 to move, and the welding gun 19 is driven by the multi-axis mechanical arm 18 to move. The multi-axis mechanical arm 18 is preferably a three-axis mechanical arm, which can give the welding gun 19 more degrees of freedom. The position of the welding gun 19 and the angle of the welding nozzle of the welding gun 19 can be adjusted according to the specific position of the weld. The welding gun 19 moves around the weld of the large-diameter tee 6 and welding can be performed while moving.

[0058] According to a further optimized solution, the protection part includes two protection plates 7 , and the protection plates 7 are fixedly connected to the front and rear sides of the frame 1 .

[0059] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0060] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A high-strength, corrosion-resistant stainless steel large-caliber three-way horizontal ring welding machine, characterized in that: include: Rack (1); A horizontal ring welding assembly, fixedly connected to one end of the top of the frame (1); A clamping assembly, fixedly connected to the other end of the top of the frame (1); An object moving assembly, movably arranged on the frame (1), the object moving assembly being located between the horizontal ring welding assembly and the clamping assembly, and the object moving assembly being used for loading a large-diameter tee (6); The protection part is fixedly connected to the frame (1).

2. According to claim 1, a high-strength, corrosion-resistant stainless steel large-diameter three-way horizontal ring welding machine is characterized in that: The clamping assembly comprises a first mounting plate (2), the first mounting plate (2) being fixedly connected to one end of the frame (1), the top of the first mounting plate (2) being fixedly connected to the bottom end of a first mounting frame (3), the top side of the first mounting frame (3) being fixedly connected to the fixed end of a first telescopic part, the movable end of the first telescopic part being fixedly connected to a fixing fixture (5), and the fixing fixture (5) being used to fix the large-diameter tee (6).

3. The high-strength, corrosion-resistant stainless steel large-diameter three-way horizontal ring welding machine according to claim 2 is characterized by: The first telescopic part comprises a first telescopic rod (4), the fixed end of the first telescopic rod (4) is fixedly connected to one side of the top end of the first mounting frame (3), and the movable end of the first telescopic rod (4) is fixedly connected to the fixing clamp (5).

4. The high-strength, corrosion-resistant stainless steel large-diameter three-way horizontal ring welding machine according to claim 3 is characterized by: The fixing clamp (5) comprises a clamp mounting plate (501), one side of the middle portion of the clamp mounting plate (501) is fixedly connected to the movable end of the first telescopic rod (4), and the front and rear sides of the clamp mounting plate (501) are rotatably connected to two symmetrically arranged clamping parts.

5. The high-strength, corrosion-resistant stainless steel large-diameter three-way horizontal ring welding machine according to claim 4, characterized in that: The clamping portion comprises an arc-shaped concave abutting block (504), the upper and lower ends of which are rotatably connected to one end of a connecting arm (502) via a rotating shaft and a torsion spring (503), respectively, the other end of the connecting arm (502) being fixedly connected to the fixture mounting plate (501), and one side of the arc-shaped concave abutting block (504) is provided with an arc-shaped concave surface for abutting against the outer wall of the large-diameter tee (6).

6. The high-strength, corrosion-resistant stainless steel large-diameter three-way horizontal ring welding machine according to claim 1 is characterized by: The object moving assembly comprises a second mounting plate (8), the second mounting plate (8) being fixedly connected to the top of the frame (1), two slideways (9) being fixedly connected to the front and rear sides of the top of the second mounting plate (8), the slideways (9) being slidably matched with slide grooves (11), the two slide grooves (11) being fixedly connected to the front and rear sides of the bottom of the slide plate (10), respectively, the top of the slide plate (10) being fixedly connected to the fixed end of a lifting part, the movable end of the lifting part being fixedly connected to a lifting plate (13), the lifting plate (13) being slidably connected to a support plate (12) via a second slide rail (14), the sliding direction of the support plate (12) being perpendicular to the length direction of the slideway (9), and the support plate (12) being used to hold the large-diameter tee (6).

7. The high-strength, corrosion-resistant stainless steel large-diameter three-way horizontal ring welding machine according to claim 6, characterized in that: The lifting part comprises a lifting telescopic rod (15), the fixed end of the lifting telescopic rod (15) is fixedly connected to the top center of the slide plate (10), and the movable end of the lifting telescopic rod (15) is fixedly connected to the bottom center of the lifting plate (13).

8. The high-strength, corrosion-resistant stainless steel large-diameter three-way horizontal ring welding machine according to claim 1 is characterized by: The horizontal ring welding assembly comprises a horizontal welding gun seat (16), and the horizontal welding gun seat (16) is fixedly connected to the frame (1) via a second mounting frame (26); An annular slide groove (20) is coaxially provided on the horizontal welding gun seat (16), an arc-shaped slide block (17) is slidably connected in the annular slide groove (20), a fixed end of a multi-axis mechanical arm (18) is fixedly connected to the arc-shaped slide block (17), a welding gun (19) is fixedly connected to the movable end of the multi-axis mechanical arm (18), and a welding nozzle of the welding gun (19) is arranged toward the welding seam of the large-diameter tee (6); The arc-shaped slider (17) is fixedly connected to the outer wall of an inner gear ring (21), the inner gear ring (21) is coaxially rotatably arranged on the horizontal welding gun seat (16), the inner side of the inner gear ring (21) is meshed with a first driving gear (22), the first driving gear (22) is axially connected to the output shaft of a first driving motor (24), and the fixed end of the first driving motor (24) is fixedly connected to the horizontal welding gun seat (16); An axial positioning support device (27) for positioning and fixing the large-caliber tee (6) is provided in the middle of the horizontal welding gun seat (16); the axial positioning support device (27) is transmission-connected to a second drive gear (23); the second drive gear (23) is axially connected to an output shaft of a second drive motor (25); and a fixed end of the second drive motor (25) is fixedly connected to the horizontal welding gun seat (16).

9. The high-strength, corrosion-resistant stainless steel large-diameter three-way horizontal ring welding machine according to claim 8, characterized in that: The axial positioning support device (27) comprises a fixed shaft (2701), one end of the fixed shaft (2701) is coaxially fixed to the horizontal welding gun seat (16), the other end of the fixed shaft (2701) is coaxially fixed to a fixed plate (2707), a plurality of sliding grooves (2708) are circumferentially evenly spaced on the fixed plate (2707), a sliding arm (2705) is slidably connected in the sliding groove (2708), and the sliding arm (2705) One end of the sliding arm (2705) is fixedly connected to a top block (2704), the other end of the sliding arm (2705) is fixedly connected to a circular column (2706), the circular column (2706) is slidably connected to an arc-shaped slide groove (2703), a plurality of the arc-shaped slide grooves (2703) are circumferentially evenly spaced and arranged on the same rotating disk (2702), the rotating disk (2702) is rotatably connected to the fixed shaft (2701), and the rotating disk (2702) is meshed with the second driving gear (23).

10. The high-strength, corrosion-resistant stainless steel large-diameter three-way horizontal ring welding machine according to claim 1, characterized in that: The protection part comprises two protection plates (7), and the protection plates (7) are fixedly connected to the front and rear sides of the frame (1).

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