Long pipe inner wall automatic surfacing system of rigid beam welding gun operating mechanism
By designing a rigid beam welding torch operating mechanism, the problem of vibration caused by insufficient steel rope support during the welding process on the inner wall of a long pipe was solved, thus achieving stable movement of the welding torch and efficient welding.
Patent Information
- Application Number
- CN202520123582.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-01-20
AI Technical Summary
The existing welding torch motion actuator causes the welding torch to shake and sway from side to side due to insufficient steel cable support during the welding of the inner wall of long pipes, which affects the welding quality and efficiency.
The rigid beam welding torch running mechanism includes a base, welding machine tool and welding torch running mechanism. The combination design of rigid fixed beam and movable beam ensures the stable movement of the welding torch. The combination support structure of hydraulic cylinder and wire rope provides stable support and guidance.
It improves the stability of the welding torch movement, ensures welding quality and efficiency, extends the service life of the equipment, and avoids shaking and swaying of the welding torch during movement.
Smart Images
Figure CN223734198U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of surfacing technology, especially relates to a long tube inner wall automatic surfacing system of rigid beam welding gun operation mechanism. BACKGROUND
[0002] In the field of long tube inner wall surfacing, the welding gun is required to move at a very slow speed during surfacing, and the surfacing area of the large-diameter long tube inner wall is larger, and the time required for one circle of surfacing is longer. Compared with the normal speed, the slow speed operation requires higher stability of the movement execution mechanism of the welding gun. The more stable the welding gun advances, the better the welding quality is guaranteed.
[0003] In the existing technical solution, the welding gun movement execution mechanism is composed of three parts: a welding gun base, a moving trolley and two tensioned steel ropes. When working, the tensioned steel ropes play the role of guiding and supporting, the welding gun is installed on the base, and the moving trolley provides a power source to push the base to slide on the steel ropes at a set speed.
[0004] As a supporting part, the steel rope can only provide effective support when it is subjected to sufficient tension, but in actual application scenarios, it is impossible to meet the sufficient tension, and the welding gun will appear to shake, sway left and right and other phenomena, resulting in unstable surfacing quality.
[0005] The welding gun base slides on the steel ropes, and the friction between them is large and not constant, which not only shortens the service life of the equipment, but also is not conducive to the uniform motion of the welding gun assembly. SUMMARY
[0006] The technical problem to be solved by the utility model is to provide a long tube inner wall surfacing system of rigid beam welding gun operation mechanism, the execution mechanism of the rigid beam of the system guarantees the stable and reliable advancement of the welding gun, thereby improving the welding quality and welding efficiency.
[0007] In order to solve the above technical problems, the present application is realized by the following technical scheme: a long tube inner wall automatic surfacing system of rigid beam welding gun operation mechanism, comprising a base, a welding machine tool and a welding gun operation mechanism;
[0008] The welding machine tool is composed of a rotary head frame, a bed body, a first linear slide rail, a supporting roller bracket, a tail seat, a steel wire rope, a head frame, a hydraulic cylinder, a screw sleeve, a screw rod and a bracket, the bed body is fixedly installed on the base, two first linear slide rails are fixedly installed on the bed body in parallel, a plurality of supporting roller brackets are slidingly installed on the first linear slide rails, the tail seat and the head frame are fixedly installed at the tail and the head of the bed body respectively, the rotary head frame is fixedly installed at the head of the bed body, two steel wire ropes are fixedly installed on the tail seat in parallel at the rear end, the cylinder body of the hydraulic cylinder is fixedly installed on the head frame, the bracket is fixedly installed on the piston rod of the hydraulic cylinder, the screw rod is locked and fixed on the bracket through the screw sleeve, the front ends of the two steel wire ropes are provided as a lock catch structure, and the lock catch structure is sleeved and installed on the screw rod.
[0009] The welding gun operating mechanism is composed of a column, a welding moving trolley, a rigid fixed beam, a second linear slide rail, a rigid movable beam, a large square tube, a connecting frame, a square sleeve and a welding gun assembly, a plurality of columns are fixedly installed on the base, the rigid fixed beam is fixedly installed on the columns, the second linear slide rail is fixedly installed on the rigid fixed beam, a rack parallel to the second linear slide rail is also fixedly installed on the rigid fixed beam, a first sliding block is fixedly installed in the square sleeve, the first sliding block is slidingly installed on the second linear slide rail, a first driving motor is fixedly installed on the outer wall of the square sleeve, a gear is fixedly installed on the output shaft of the first driving motor, the gear is in meshing transmission connection with the rack, a first connecting plate is fixedly installed on the top of the square sleeve, the welding moving trolley is fixedly installed at the rear end of the large square tube, and the welding moving trolley travels on the rigid movable beam.
[0010] The rigid movable beam is provided with a pulley fixedly installed at the bottom, a third linear slide rail is fixedly installed on the inner wall of the rigid movable beam, second connecting plates are fixedly installed on the two sides of the rigid movable beam, the second connecting plates are fixedly connected with the first connecting plate, second sliding blocks are fixedly installed on the two sides of the connecting frame, and the second sliding blocks are slidingly installed on the third linear slide rail.
[0011] The welding gun assembly is composed of a sliding frame, a welding gun body, guide rods, a welding gun support, a second driving motor, a wire feeding assembly, a lead screw and a camera, four small square tubes in rectangular distribution are fixedly installed on the large square tube, a third connecting plate is fixedly installed at the outer end of the small square tube, the third connecting plate is fixedly connected with the connecting frame, the camera is fixedly installed on the small square tube, the sliding frame is fixedly installed at the bottom of the small square tube, the sliding frame is fixedly installed on the small square tube, at least two guide rods are slidingly installed in the containing cavity of the sliding frame, the welding gun support is slidingly and sleevedly installed on the guide rods, the second driving motor is fixedly installed at the top of the sliding frame, the lead screw is rotatably installed on the upper and lower walls of the containing cavity of the sliding frame, the output shaft of the second driving motor is in transmission connection with the lead screw, the welding gun support is in threaded transmission connection with the lead screw, the welding gun body and the wire feeding assembly are fixedly installed on the welding gun support, and the bottom of the rigid movable beam is provided as an open structure.
[0012] Preferably, the pulley is provided with a clamping groove matched with the steel wire rope.
[0013] Preferably, the rigid fixed beam is provided with a drag chain groove support.
[0014] Preferably, the rigid movable beam is fixedly installed with a sealing plate at both ends of the open structure at the bottom.
[0015] Preferably, the rigid fixed beam is further fixedly installed with an anti-collision stopper matched with the square sleeve.
[0016] Preferably, the large square tube is welded with a bending plate inside, and the top of the large square tube is provided with spaced apart holes.
[0017] Compared with the prior art, the welding gun operating mechanism has the advantages that:
[0018] 1. The welding gun operating mechanism is rigid, thereby ensuring the stability of the welding gun in the movement process and guaranteeing the welding quality. The rigid movable beam serves as a supporting piece of the welding gun assembly, so that the welding gun is not easily disturbed by external factors in the movement process, the movement state of the welding gun is stable, and phenomena such as shaking and left-right swinging do not occur, thereby improving the welding quality.
[0019] 2. The welding gun assembly is easy to realize uniform speed movement. The welding gun assembly is pushed by the welding trolley, and realizes horizontal movement through the guide rail and the sliding block assembly inside the movable beam. When the sliding block slides on the guide rail, the friction between the two is small, thereby improving the stability of the welding gun movement. Not only is the service life of the equipment prolonged, but also the uniform speed movement of the welding gun assembly is ensured, thereby improving the welding quality. BRIEF DESCRIPTION OF DRAWINGS
[0020] The utility model will be further explained in connection with the drawings.
[0021] Figure 1 It is the perspective view of the utility model.
[0022] Figure 2 It is a 3D view of a welding machine tool.
[0023] Figure 3 It is a 3D diagram of the welding torch operating mechanism.
[0024] Figure 4 This is a 3D view of the installation structure of the hydraulic cylinder.
[0025] Figure 5 This is a top view of the installation structure of the hydraulic cylinder.
[0026] Figure 6 This is a schematic diagram of the installation structure of the connecting frame and the rigid movable beam.
[0027] Figure 7 This is a 3D view of the movable beam trolley.
[0028] Figure 8 This is the front view of the movable beam trolley.
[0029] Figure 9 This is a schematic diagram of the installation structure of the sealing plate.
[0030] Figure 10 This is a schematic diagram of the installation structure of the welding torch assembly.
[0031] Figure 11 This is a 3D view of the welding torch assembly.
[0032] Figure 12 This is a schematic diagram of the installation structure of the cable chain groove bracket. Detailed Implementation
[0033] The present invention will now be described in detail with reference to specific embodiments:
[0034] like Figure 1 The automatic cladding system for the inner wall of a long pipe with a rigid beam welding torch running mechanism is shown, including a base 1, a welding machine tool and a welding torch running mechanism;
[0035] like Figure 2 , Figure 5 , Figure 6As shown, the welding machine tool is composed of a rotary head frame 2, a bed 20, a first linear slide rail 201, a support roller bracket 21, a tailstock 22, a steel wire rope 23, a head frame 24, a hydraulic cylinder 25, a screw sleeve 26, a screw rod 27 and a bracket 28, the bed 20 is fixedly installed on the base 1, two first linear slide rails 201 are parallel and fixedly installed on the bed 20, a plurality of support roller brackets 21 are slidingly installed on the first linear slide rails 201, the tailstock 22 and the head frame 24 are fixedly installed at the tail and the head of the bed 20 respectively, the rotary head frame 2 is fixedly installed at the head of the bed 20, the rear ends of the two steel wire ropes 23 are parallel and fixedly installed on the tailstock 22, the cylinder body of the hydraulic cylinder 25 is fixedly installed on the head frame 24, the bracket 28 is fixedly installed on the piston rod of the hydraulic cylinder 25, the screw rod 27 is locked and fixed on the bracket 28 through the screw sleeve 26, the front ends of the two steel wire ropes 23 are provided as a lock catch structure, and the lock catch structure is sleevedly installed on the screw rod 27;
[0036] As shown in the figure, Figure 3 The welding torch operating mechanism is composed of a column 3, a welding moving trolley 4, a rigid fixed beam 31, a second linear slide rail 32, a rigid movable beam 5, a square sleeve 7 and a welding torch assembly, a plurality of columns 3 are fixedly installed on the base 1, the rigid fixed beam 31 is fixedly installed on the column 3, the second linear slide rail 32 is fixedly installed on the rigid fixed beam 31, and a rack parallel to the second linear slide rail 32 is also fixedly installed on the rigid fixed beam 31, a first sliding block 74 is fixedly installed in the square sleeve 7, the first sliding block 74 is slidingly installed on the second linear slide rail 32, a first driving motor 73 is fixedly installed on the outer wall of the square sleeve 7, a gear 75 is fixedly installed on the output shaft of the first driving motor 73, the gear 75 is in meshing transmission connection with the rack, a first connecting plate 72 is fixedly installed on the top of the square sleeve 7, the welding moving trolley 4 is fixedly installed at the rear end of the large square tube 6, and the welding moving trolley 4 walks on the top surface of the rigid movable beam 5; a welding power supply, a hot wire power supply, an electric control cabinet, a welding cooling water tank and a welding wire cylinder are also arranged on the welding moving trolley 4. The square sleeve 7, the first driving motor 73, the gear 75 and the first sliding block 74 form a movable beam trolley, which not only has a driving effect on the rigid movable beam 5, but also is an important mechanism for supporting the rigid movable beam 5 during the welding process.
[0037] As shown in the figure, Figure 6 The rigid movable beam 5 is fixedly installed at the bottom of the rigid movable beam 5, a third linear slide rail 53 is fixedly installed on the inner wall of the rigid movable beam 5, second connecting plates 54 are fixedly installed on the two sides of the rigid movable beam 5, the second connecting plates 54 are fixedly connected with the first connecting plate 72, second sliding blocks 62 are fixedly installed on the two sides of the connecting frame 61, and the second sliding blocks 62 are slidingly installed on the third linear slide rail 53;
[0038] AsFigure 10 、 Figure 11 As shown in the figure, the welding gun assembly is composed of a sliding frame 8, a welding gun body 81, a guide rod 82, a welding gun support 83, a second driving motor 84, a wire feeding assembly 85, a lead screw 86 and a camera 87. Four small square tubes 9 are fixedly installed on the large square tube 6 in a rectangular distribution. A third connecting plate 91 is fixedly installed at the outer end of the small square tube 9. The third connecting plate 91 is fixedly connected with the connecting frame 61. The camera 87 is fixedly installed on the small square tube 9. The sliding frame 8 is fixedly installed at the bottom of the small square tube 9. At least two guide rods 82 are slidingly installed in the accommodating cavity of the sliding frame 8. The welding gun support 83 is slidingly and sleevedly installed on the guide rod 82. The second driving motor 84 is fixedly installed at the top of the sliding frame 8. The lead screw 86 is rotatably installed at the upper and lower walls of the accommodating cavity of the sliding frame 8. The output shaft of the second driving motor 84 is in transmission connection with the lead screw 86. The welding gun support 83 is in threaded transmission connection with the lead screw 86. The welding gun body 81 and the wire feeding assembly 85 are fixedly installed on the welding gun support 83. The bottom of the rigid movable beam 5 is provided with an open structure 50.
[0039] As shown in the figure, the pulley 51 is provided with a clamping groove matched with the steel wire rope 23, so that the pulley 51 can be stably supported on the steel wire rope 23. Figure 6
[0040] As shown in the figure, the rigid fixed beam 31 is provided with a drag chain groove support 310 for supporting the drag chain groove and the wiring of the auxiliary welding gun assembly related cables. Figure 12
[0041] As shown in the figure, the rigid movable beam 5 is provided with an open structure 50 at the bottom. The ends of the open structure 50 are fixedly installed with sealing plates 52. The sealing plates 52 limit the limit range of the movement of the welding gun assembly. The welding gun body 81 performs surfacing work at the position without the sealing plate 52 in the middle of the open structure 50 at the bottom of the rigid movable beam 5. Figure 9
[0042] As shown in the figure, the rigid fixed beam 31 is further fixedly installed with an anti-collision stop block 33 matched with the square sleeve 7, to avoid the square sleeve 7 from being detached from the second linear sliding rail 32 when the rigid fixed beam 31 moves. The anti-collision stop block 33 is made of rubber material to avoid rigid collision. Figure 12
[0043] Workpiece clamping: the end of the pipe workpiece is clamped by the rotatable head frame 2, and the other end of the workpiece is supported by the roller bracket 21; the cooperation of the overall up-down height adjustment of the head frame 24 and the fine height adjustment of the roller bracket 21 can adjust the pipe of different diameters to the height suitable for welding operation. When the welding gun body 81 moves inside the pipe for welding, the parallel steel wire rope 23 supports the pulley 51 at the cantilever end of the rigid movable beam 5, which plays an auxiliary supporting role. One end of the steel wire rope 23 is fixedly installed on the tail seat 22, and the other end is manually pre-tensioned on the screw rod 27 of the head frame through the build-up welding of the inner wall of the pipe. The combination of the screw sleeve 26, the screw rod 27 and the bracket 28 is retracted by the piston rod of the hydraulic cylinder 25, so that the steel wire rope 23 is tightened and the two steel wire ropes are parallel to each other through hydraulic tensioning.
[0044] Welding operation: during the welding process, the first drive motor 73 on the movable beam trolley is started, the gear 75 is engaged with the rack to drive the rigid movable beam 5 along the second linear slide rail 32 to the direction of the rotary head frame 2, and the rigid movable beam 5 stops moving when it reaches the specified position;
[0045] The welding moving trolley 4 and the large square pipe 6 move on the rigid movable beam 5, and at the same time, the horizontal movement of the welding gun assembly is pushed to ensure that the power supply, cooling and wire feeding during the build-up welding process are normal, so that the welding gun body 81 reaches the specified welding position in the program;
[0046] The large square pipe 6 is welded with a bent plate inside for assisting the cable routing in the pipe; the top of the large square pipe 6 is provided with spaced apart holes, which not only ensures the rigidity of the large square pipe 6, but also ensures the heat dissipation of the large square pipe 6 during the welding process, reduces the internal temperature of the large square pipe 6 during the welding process, and protects the cable; the tail of the large square pipe 6 is provided with a mounting hole for connecting with the welding moving trolley 4. The small square pipe 9 is connected with the large square pipe 6; the welding gun assembly is installed inside the space surrounded by the four small square pipes 9, and the open space surrounded by the small square pipes 9 is conducive to the heat dissipation of the welding gun assembly during the welding process;
[0047] The second drive motor 84 drives the screw rod 86 to rotate, and the screw rod 86 drives the welding gun bracket 83 to move up and down along the guide rod 82 to adjust, realizing the movement of the welding gun bracket 83, the welding gun body 81 and the wire feeding assembly 85 in the vertical direction. The welding gun body 81 is a TIG welding gun, and the second drive motor 84 and the welding gun body 81 cooperate with the related control system to realize the arc pressure tracking function of the welding gun body 81.
Claims
1. A long tube inner wall automatic overlay welding system of a rigid beam welding gun operating mechanism, characterized in that: It includes base (1), welding machine tool and welding gun operation mechanism; The welding machine tool is composed of a headstock (2), a bed body (20), a first linear slide rail (201), a supporting roller bracket (21), a tailstock (22), a steel wire rope (23), a headstock (24), a hydraulic cylinder (25), a screw sleeve (26), a screw rod (27) and a bracket (28). The bed body (20) is fixedly installed on the base (1). Two first linear slide rails (201) are parallel and fixedly installed on the bed body (20). A plurality of supporting roller brackets (21) are slidingly installed on the first linear slide rails (201). The tailstock (22) and the headstock (24) are fixedly installed at the tail and the head of the bed body (20), respectively. The headstock (2) is fixedly installed at the head of the bed body (20). The rear ends of two steel wire ropes (23) are parallel and fixedly installed on the tailstock (22). The cylinder body of the hydraulic cylinder (25) is fixedly installed on the headstock (24). The bracket (28) is fixedly installed on the piston rod of the hydraulic cylinder (25). The screw rod (27) is locked and fixed on the bracket (28) through the screw sleeve (26). The front ends of the two steel wire ropes (23) are provided with a lock catch structure, which is sleevedly installed on the screw rod (27). The welding gun operation mechanism is composed of a stand (3), a welding moving trolley (4), a rigid fixed beam (31), a second linear slide rail (32), a rigid movable beam (5), a large square tube (6), a connecting frame (61), a square sleeve (7) and a welding gun assembly. A plurality of stands (3) are fixedly installed on the base (1). The rigid fixed beam (31) is fixedly installed on the stand (3). The second linear slide rail (32) is fixedly installed on the rigid fixed beam (31). A rack parallel to the second linear slide rail (32) is also fixedly installed on the rigid fixed beam (31). A first sliding block (74) is fixedly installed in the square sleeve (7). The first sliding block (74) is slidingly installed on the second linear slide rail (32). A first driving motor (73) is fixedly installed on the outer wall of the square sleeve (7). A gear (75) is fixedly installed on the output shaft of the first driving motor (73). The gear (75) is in meshing transmission connection with the rack. A first connecting plate (72) is fixedly installed on the top of the square sleeve (7). The welding moving trolley (4) is fixedly installed at the rear end of the large square tube (6). The welding moving trolley (4) walks on the rigid movable beam (5). A pulley (51) is fixedly installed at the bottom of the rigid movable beam (5). A third linear slide rail (53) is fixedly installed on the inner wall of the rigid movable beam (5). Second connecting plates (54) are fixedly installed on the two sides of the rigid movable beam (5). The second connecting plates (54) are fixedly connected with the first connecting plate (72). Second sliding blocks (62) are fixedly installed on the two sides of the connecting frame (61). The second sliding blocks (62) are slidingly installed on the third linear slide rail (53). Said welding torch assembly is composed of a sliding frame (8), a welding torch body (81), guide rods (82), a welding torch support (83), a second driving motor (84), a wire feeding assembly (85), a lead screw (86) and a camera (87), four small square tubes (9) are fixedly installed on the large square tube (6) in a rectangular distribution, a third connecting plate (91) is fixedly installed at the outer end of the small square tube (9), the third connecting plate (91) is fixedly connected with the connecting frame (61), the camera (87) is fixedly installed on the small square tube (9), the sliding frame (8) is fixedly installed at the bottom of the small square tube (9), the sliding frame (8) is fixedly installed on the small square tube (9), at least two guide rods (82) are slidingly installed in the containing cavity of the sliding frame (8), the welding torch support (83) is slidingly and sleevedly installed on the guide rod (82), the second driving motor (84) is fixedly installed at the top of the sliding frame (8), the lead screw (86) is rotatably installed at the upper and lower walls of the containing cavity of the sliding frame (8), the output shaft of the second driving motor (84) is in transmission connection with the lead screw (86), the welding torch support (83) is in screw transmission connection with the lead screw (86), the welding torch body (81) and the wire feeding assembly (85) are both fixedly installed on the welding torch support (83), and the bottom of the rigid movable beam (5) is provided as an open structure.
2. The long tube inner wall automatic overlay welding system of the rigid beam welding gun operating mechanism according to claim 1, characterized in that: The pulley (51) is provided with a clamping groove matched with the steel wire rope (23).
3. The long tube inner wall automatic overlay welding system of the rigid beam welding gun operating mechanism according to claim 1, characterized in that: The rigid fixed beam (31) is provided with a drag chain groove support (310).
4. The long tube inner wall automatic overlay welding system of the rigid beam welding gun operating mechanism according to claim 1, characterized in that: The rigid movable beam (5) is fixedly installed with an end plate (52) at both ends of the open structure at the bottom.
5. The long tube in-wall automatic overlay welding system for rigid beam welding gun operating mechanism according to claim 1, characterized in that: The rigid fixed beam (31) is further fixedly installed with an anti-collision stop block (33) matched with the square sleeve (7).
6. The long tube in-wall automatic overlay welding system for rigid beam welding gun operating mechanism according to claim 1, characterized in that: The large square tube (6) is welded with a bent plate inside, and the top of the large square tube (6) is provided with spaced apart holes.