Automatic welding device for boiler pipeline

Abstract

The invention discloses an automatic welding device for a boiler pipeline, and relates to the technical field of boiler pipeline welding. Comprising a rack, a first positioning mechanism and a second positioning mechanism are arranged on the rack, a transferring mechanism is arranged at the top of the rack, a welding machining mechanism is arranged on the rack and located between the first positioning mechanism and the second positioning mechanism, the welding machining mechanism comprises an eighth sliding base, and a movable electric cylinder is arranged on the eighth sliding base; two merging outer rings are arranged on a telescopic rod of the movable electric cylinder, merging inner rings are rotationally arranged on the inner sides of the merging outer rings, airflow sensors are arranged at one ends of the inner sides of the merging inner rings, and a welding arm is arranged at one end of the inner side of one merging inner ring; butt joint installation can be conducted on the pipeline, welding operation is conducted on the butt joint area of the pipeline and the end plate, and quality inspection can be conducted on the welding area subsequently; and the manual participation degree is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler pipeline welding, and in particular to an automatic welding device for boiler pipelines. Background Art

[0002] The basic working principle of a boiler is to convert water or fluid into steam through heating. Steam can be used to drive mechanical equipment, generate electricity or provide heating. Some boilers are equipped with several pipes for transmitting fluids. In production and manufacturing, the pipes and the boiler end plates are generally connected and fixed by welding processes. In existing welding operations, automatic and semi-automatic arc welding is a common process means, which can improve operation efficiency. However, due to the large number of boiler pipes, the pipes and the end plates need to be installed and docked one by one before the welding operation begins. This process is more dependent on manual operation, which reduces the efficiency of the welding operation. Based on this, the present invention proposes a welding device that can dock and install pipes and perform welding operations on the docking area of the pipes and the end plates. The welding area can be subsequently quality inspected to reduce manual participation. Summary of the Invention

[0003] In response to the above technical problems, the present invention can perform butt-jointing installation on the pipeline and perform welding operations on the butt-jointing area between the pipeline and the end plate, and subsequently perform quality inspection on the welding area, thereby reducing manual participation.

[0004] The use scheme of the present invention is: a boiler pipe automatic welding device, including a frame, a positioning mechanism 1 and a positioning mechanism 2 are provided on the frame, for respectively positioning and installing end plates; a transfer mechanism is provided on the top of the frame, for clamping and transferring the pipe, and installing the pipe between the two end plates; a welding processing mechanism is provided on the frame and between the positioning mechanism 1 and the positioning mechanism 2, the welding processing mechanism includes a slide 8, a movable electric cylinder is provided on the slide 8, and two merged outer rings are provided on the telescopic rod of the movable electric cylinder, a merged inner ring is provided on the inner side of the merged outer ring for rotation, an airflow sensor is arranged on one end of the inner side of the merged inner ring, and a welding arm is provided on one end of the inner side of one of the merged inner rings; an airflow transmission part is provided below the positioning mechanism 1, for transmitting airflow to the inside of the welded pipe; a sealing plate is provided on the positioning mechanism 2, for sealing the top of the pipe.

[0005] Furthermore, the positioning mechanism includes a motor arranged at the bottom of the frame, a gear is provided on the output shaft of the motor, and an azimuth ring is rotatably installed on the frame, the gear is engaged with the azimuth ring, a mounting plate is provided on the azimuth ring, an electric cylinder is provided on the mounting plate, and a clamping part is provided on the telescopic rod of the electric cylinder for clamping the end plate; the air flow transmission part includes an air flow box arranged on the frame, an air pipe is arranged on the air flow box, and air holes are arranged in an array on the mounting plate, and the air pipe is connected to the air holes to perform air flow transmission.

[0006] Furthermore, the second positioning mechanism includes a positioning electric cylinder arranged on the frame, a mounting outer ring is arranged on the telescopic rod of the positioning electric cylinder, and a second motor is arranged on the mounting outer ring, a second gear is arranged on the output shaft of the second motor, an inner mounting ring is rotatably installed on the mounting outer ring, and the inner mounting ring is engaged with the second gear; an electric cylinder is arranged on the mounting inner ring, and a clamping part is arranged on the telescopic rod of the second electric cylinder for clamping the end plate.

[0007] Furthermore, a sealing motor is provided on the outside of the mounting outer ring, and the sealing motor is used to drive the sealing plate, and the sealing plate is flipped over to the top of the end plate to seal the end plate.

[0008] Furthermore, a preparatory installation mechanism is provided on the frame for installing pipes; the preparatory installation mechanism includes a third motor, a third screw and a preparatory installation seat arranged on the frame, the third motor is used to drive the third screw, and a preparatory installation seat is slidably installed on the frame, the preparatory installation seat and the third screw form a spiral pair, and the preparatory installation seat is arranged with pipe installation holes in an array for installing pipes.

[0009] Furthermore, the transfer mechanism includes a transfer mounting platform arranged on the top of the frame, and a motor six and a screw rod six are arranged on the transfer mounting platform. The motor six is used to drive the screw rod six. A movable platform is slidably installed on the transfer mounting platform. The movable platform and the screw rod six form a spiral pair. A shifting ring is rotatably installed on the outer side of the movable platform, and a motor four is arranged on the movable platform. A gear four is arranged on the output shaft of the motor four, and the gear four is engaged with the shifting ring.

[0010] Furthermore, the indexing ring is connected to a positioning frame, on which a motor five and a screw rod five are provided. The motor five is used to drive the screw rod five. A slide five is slidably mounted on the positioning frame, and the slide five and the screw rod five form a spiral pair. A guide rod seven and a screw rod seven are movably provided on the slide five, and a motor seven is provided on the slide five. A belt structure is provided on the output shaft of the motor seven, and one end of the belt structure forms a spiral pair with the screw rod seven.

[0011] Furthermore, the bottom ends of the guide rod 7 and the screw rod 7 are provided with a clamping sleeve, and the clamping sleeve is provided with a clamping electric cylinder for clamping the pipeline.

[0012] Furthermore, the welding processing mechanism includes a motor eight and a screw rod eight arranged on the frame, the motor eight is used to drive the screw rod eight, the slide eight and the screw rod eight form a spiral pair, a driving motor is provided on the telescopic rod of the mobile electric cylinder, and a combined electric cylinder is provided on the output shaft of the driving motor. The combined electric cylinder is used to control the movement of the combined outer ring, a control motor is provided on the outside of the combined outer ring, and a control gear is provided on the output shaft of the control motor, and the control gear is engaged with the combined inner ring.

[0013] Compared with the prior art, the present invention has the following advantages: (1) the height position of the clamping sleeve can be adjusted. Through the above position adjustment process, the pipeline can be transferred to the top of the two end plates, and then the pipeline can be passed through the upper end plate and then installed on the lower end plate. After completing the docking of one pipeline, the pipeline is welded; (2) the welding arm is made to weld around the pipeline welding area. Through position adjustment, the welding areas at the bottom and top of the pipeline can be welded; (3) after welding is completed, the combined outer ring can be controlled to rotate by the driving motor, that is, the orientation of the airflow sensor is turned, and the airflow is transmitted through the airflow box. The airflow is transmitted from the air pipe to the air holes on the mounting plate, and then transmitted to the inside of the pipeline. The sealing plate is flipped by the sealing motor to seal the top of the pipeline. When the airflow flows in the pipeline, the airflow sensor analyzes and feeds back the airflow leakage outside the welding area; (4) the present invention first docks and installs the inner pipeline and then extends the installation outward, which can save manual docking and installation operations and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the installation structure of the positioning mechanism of the present invention.

[0016] Figure 3 This is a schematic diagram of the installation structure of the second positioning mechanism of the present invention.

[0017] Figure 4 This is a schematic diagram of the structure of the preparatory mounting seat of the present invention.

[0018] Figure 5 It is a schematic diagram of the transfer mechanism structure of the present invention.

[0019] Figure 6 This is a schematic diagram of the partial installation structure of the transfer mechanism of the present invention.

[0020] Figure 7 It is a structural schematic diagram of the welding processing mechanism of the present invention.

[0021] Figure 8 This is a schematic diagram of the combined outer ring installation structure of the present invention.

[0022] Figure 9 This is a schematic diagram of the combined inner ring installation structure of the present invention.

[0023] Figure numerals: 1-frame; 2-position electric cylinder; 3-motor 1; 4-gear 1; 5-mounting plate; 501-azimuth ring; 6-airflow box; 7-electric cylinder 1; 8-clamping part 1; 9-mounting outer ring; 10-motor 2; 11-gear 2; 12-mounting inner ring; 13-clamping part 2; 14-electric cylinder 2; 15-sealing motor; 16-sealing plate; 17-motor 3; 18-screw 3; 19-preparatory mounting seat; 20-transfer mounting platform; 21-moving platform; 22-positioning ring; 23-motor 4; 24- Gear four; 25-position rack; 26-motor five; 27-slide five; 28-motor six; 29-screw six; 30-motor seven; 31-screw five; 32-guide rod seven; 33-screw seven; 34-clamping sleeve; 35-clamping electric cylinder; 36-motor eight; 37-screw eight; 38-slide eight; 39-moving electric cylinder; 40-drive motor; 41-merged electric cylinder; 42-merged outer ring; 43-control motor; 44-control gear; 45-merged inner ring; 46-welding arm; 47-airflow sensor. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative work are within the scope of protection of the present invention.

[0025] like Figures 1 to 9 As shown, a boiler pipe automatic welding device includes a frame 1, and a positioning mechanism 1 and a positioning mechanism 2 are provided on the frame 1 for respectively positioning and installing the end plates; a transfer mechanism is provided on the top of the frame 1 for clamping and transferring the pipe and installing the pipe between the two end plates; a welding processing mechanism is provided on the frame 1 and between the positioning mechanism 1 and the positioning mechanism 2, and the welding processing mechanism includes a slide 8 38, and a moving electric cylinder 39 is provided on the slide 8 38. Two merged outer rings 42 are provided on the telescopic rod of the moving electric cylinder 39, and a merged inner ring 45 is provided on the inner side of the merged outer ring 42 for rotation. An airflow sensor 47 is arranged at one end of the inner side of the merged inner ring 45, and a welding arm 46 is provided at one end of the inner side of one of the merged inner rings 45; an airflow transmission part is provided below the positioning mechanism 1 for transmitting airflow to the inside of the welded pipe; a sealing plate 16 is provided on the positioning mechanism 2 for sealing the top of the pipe.

[0026] The positioning mechanism 1 includes a motor 3 arranged at the bottom of the frame 1, a gear 4 is provided on the output shaft of the motor 3, and an azimuth ring 501 is rotatably installed on the frame 1, the gear 4 is engaged with the azimuth ring 501, a mounting plate 5 is provided on the azimuth ring 501, an electric cylinder 7 is provided on the mounting plate 5, and a clamping part 8 is provided on the telescopic rod of the electric cylinder 7 for clamping the end plate; the air flow transmission part includes an air flow box 6 arranged on the frame 1, an air pipe is arranged on the air flow box 6, and air holes are arranged in an array on the mounting plate 5, and the air pipe and the air holes are docked and overlapped to perform air flow transmission.

[0027] The second positioning mechanism includes a positioning electric cylinder 2 arranged on the frame 1, and a mounting outer ring 9 is arranged on the telescopic rod of the positioning electric cylinder 2, and a motor 2 10 is arranged on the mounting outer ring 9, and a gear 2 11 is arranged on the output shaft of the motor 2 10, and a mounting inner ring 12 is rotatably installed on the mounting outer ring 9, and the mounting inner ring 12 is engaged with the gear 2 11; an electric cylinder 2 14 is arranged on the mounting inner ring 12, and a clamping part 2 13 is arranged on the telescopic rod of the electric cylinder 2 14 for clamping the end plate; a sealing motor 15 is arranged on the outside of the mounting outer ring 9, and the sealing motor 15 is used to drive the sealing plate 16, and the sealing plate 16 is flipped to the top of the end plate to seal the end plate.

[0028] A preparatory installation mechanism is provided on the frame 1 for installing pipes; the preparatory installation mechanism includes a motor 3 17, a screw rod 3 18 and a preparatory installation seat 19 arranged on the frame 1, the motor 3 17 is used to drive the screw rod 3 18, and the preparatory installation seat 19 is slidably installed on the frame 1, the preparatory installation seat 19 and the screw rod 3 18 form a spiral pair, and the preparatory installation seat 19 is arranged with pipe installation holes in an array for installing pipes.

[0029] The transfer mechanism includes a transfer mounting platform 20 arranged on the top of the frame 1, and a motor 6 28 and a screw 6 29 are arranged on the transfer mounting platform 20. The motor 6 28 is used to drive the screw 6 29. A moving platform 21 is slidably installed on the transfer mounting platform 20. The moving platform 21 and the screw 6 29 form a spiral pair. A rotation ring 22 is rotatably installed on the outer side of the moving platform 21, and a motor 4 23 is arranged on the moving platform 21. A gear 4 24 is arranged on the output shaft of the motor 4 23, and the gear 4 24 is engaged with the rotation ring 22; a position frame 25 is connected to the rotation ring 22, and a position frame 25 is provided on the position frame 25. A motor 5 26 and a screw rod 5 31 are provided. The motor 5 26 is used to drive the screw rod 5 31. A slide 5 27 is slidably mounted on the position frame 25. The slide 5 27 and the screw rod 5 31 form a spiral pair. A guide rod 7 32 and a screw rod 7 33 are movably provided on the slide 5 27, and a motor 7 30 is provided on the slide 5 27. A belt structure is provided on the output shaft of the motor 7 30. One end of the belt structure forms a spiral pair with the screw rod 7 33. A clamping sleeve 34 is provided at the bottom end of the guide rod 7 32 and the screw rod 7 33. A clamping electric cylinder 35 is provided on the clamping sleeve 34 for clamping the pipe.

[0030] The welding processing mechanism includes a motor 8 36 and a screw 8 37 arranged on the frame 1. The motor 8 36 is used to drive the screw 8 37. The slide 8 38 and the screw 8 37 form a spiral pair. A driving motor 40 is provided on the telescopic rod of the mobile electric cylinder 39. A merging electric cylinder 41 is provided on the output shaft of the driving motor 40. The merging electric cylinder 41 is used to control the movement of the merging outer ring 42. A control motor 43 is provided on the outside of the merging outer ring 42. A control gear 44 is provided on the output shaft of the control motor 43. The control gear 44 is engaged with the merging inner ring 45.

[0031] Working principle: The two end plates are respectively installed on positioning mechanism 1 and positioning mechanism 2. On positioning mechanism 1, the clamping part 1 8 is controlled by electric cylinder 1 7 to clamp the end plate, and the end plate is located on the mounting plate 5. On positioning mechanism 2, electric cylinder 2 14 controls clamping part 2 13 to clamp the end plate; when the angle of the end plate needs to be adjusted, the motor 1 3 is operated to rotate the orientation ring 501 and the mounting plate 5; the motor 2 10 is operated, and the mounting inner ring 12 is rotated to achieve the angle adjustment of the end plate.

[0032] Furthermore, the pipeline is pre-installed on the preparatory mounting seat 19, and the motor three 17 is operated, the screw rod three 18 rotates, and the preparatory mounting seat 19 moves, so that the pipeline can be transferred in sequence; specifically, by the motor six 28 working, the screw rod six 29 rotates, the moving platform 21 slides, the motor four 23 works, the indexing ring 22 rotates, and the top end of the pipeline is located on the inner side of the clamping sleeve 34, which is fixed by the clamping electric cylinder 35, and by the motor seven 30 working, the screw rod seven 33 moves, and the height position of the clamping sleeve 34 can be adjusted. Through the above position adjustment process, the pipeline can be transferred to the top of the two end plates, and then the pipeline passes through the upper end plate and is then installed on the lower end plate. After completing one pipeline docking, the pipeline is welded, that is, by the motor eight 36 working, the screw rod eight 37 rotates, the slide eight 3 8 slides, the mobile electric cylinder 39 controls the position of the drive motor 40, and the merging electric cylinder 41 controls the docking of the merging outer ring 42. The pipeline is located on the inner side of the merging inner ring 45. By controlling the motor 43 to work, the merging inner ring 45 enables the welding arm 46 to perform welding processing around the pipeline welding area. By adjusting the position, the welding areas at the bottom and top of the pipeline can be welded. After the welding is completed, the merging outer ring 42 can be controlled to rotate by the drive motor 40, that is, the orientation of the airflow sensor 47 is adjusted, and the airflow is transmitted through the airflow box 6. The airflow is transmitted from the air pipe to the air holes on the mounting plate 5, and then transmitted to the inside of the pipeline. The sealing plate 16 is flipped by the sealing motor 15 to seal the top of the pipeline. When the airflow flows in the pipeline, the airflow sensor 47 analyzes and feeds back the airflow leakage outside the welding area.

[0033] After completing the welding and inspection operations, the pipelines are docked and installed, and the welding inspection is carried out from the inside to the outside. By operating the motor 5 26 and rotating the screw rod 5 31, the slide 5 27 can be slid to achieve radial movement. The pipelines are arranged from the inside to the outside on the end plate. Therefore, it is necessary to dock the inner pipeline first and then extend it outward. This can save manual docking and installation operations and improve production efficiency.

[0034] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A boiler pipe automatic welding device, comprising a frame (1), wherein a first positioning mechanism and a second positioning mechanism are provided on the frame (1) for positioning and installing end plates respectively; characterized in that: A transfer mechanism is provided on the top of the frame (1) for clamping and transferring the pipeline and installing the pipeline between the two end plates; a welding processing mechanism is provided on the frame (1) and between the positioning mechanism 1 and the positioning mechanism 2, the welding processing mechanism includes a slide 8 (38), a movable electric cylinder (39) is provided on the slide 8 (38), two merged outer rings (42) are provided on the telescopic rod of the movable electric cylinder (39), a merged inner ring (45) is provided on the inner side of the merged outer ring (42), an air flow sensor (47) is arranged at one end of the inner side of the merged inner ring (45), and a welding arm (46) is provided at one end of the inner side of one of the merged inner rings (45); an air flow transmission part is provided below the positioning mechanism 1 for transmitting air flow to the inside of the welded pipeline; a sealing plate (16) is provided on the positioning mechanism 2 for sealing the top end of the pipeline.

2. The automatic welding device for boiler pipes according to claim 1, characterized in that: The positioning mechanism comprises a motor (3) arranged at the bottom of the frame (1), a gear (4) is arranged on the output shaft of the motor (3), and an azimuth ring (501) is rotatably mounted on the frame (1), the gear (4) is engaged with the azimuth ring (501), a mounting plate (5) is arranged on the azimuth ring (501), an electric cylinder (7) is arranged on the mounting plate (5), and a clamping part (8) is arranged on the telescopic rod of the electric cylinder (7) for clamping the end plate; the air flow transmission part comprises an air flow box (6) arranged on the frame (1), an air pipe is arranged on the air flow box (6), and air holes are arranged in an array on the mounting plate (5), and the air pipe and the air holes are connected to each other to perform air flow transmission.

3. The automatic welding device for boiler pipes according to claim 1, characterized in that: The second positioning mechanism comprises a position electric cylinder (2) arranged on the frame (1); a mounting outer ring (9) is arranged on the telescopic rod of the position electric cylinder (2); a second motor (10) is arranged on the mounting outer ring (9); a second gear (11) is arranged on the output shaft of the second motor (10); a mounting inner ring (12) is rotatably mounted on the mounting outer ring (9); the mounting inner ring (12) is meshed with the second gear (11); a second electric cylinder (14) is arranged on the mounting inner ring (12); a second clamping part (13) is arranged on the telescopic rod of the second electric cylinder (14) for clamping the end plate.

4. The automatic welding device for boiler pipes according to claim 3, characterized in that: A sealing motor (15) is provided outside the mounting outer ring (9), and the sealing motor (15) is used to drive a sealing plate (16), and the sealing plate (16) is turned over to above the end plate to seal the end plate.

5. The automatic welding device for boiler pipes according to claim 1, characterized in that: The frame (1) is provided with a preparatory installation mechanism for installing a pipeline; the preparatory installation mechanism comprises a motor three (17), a screw rod three (18) and a preparatory installation seat (19) provided on the frame (1); the motor three (17) is used to drive the screw rod three (18); a preparatory installation seat (19) is slidably installed on the frame (1); the preparatory installation seat (19) and the screw rod three (18) form a spiral pair; the preparatory installation seat (19) is provided with pipeline installation holes arranged in an array for installing the pipeline.

6. The automatic welding device for boiler pipes according to claim 1, characterized in that: The transfer mechanism includes a transfer mounting platform (20) arranged on the top of the frame (1), a motor six (28) and a screw six (29) are arranged on the transfer mounting platform (20), the motor six (28) is used to drive the screw six (29), a moving platform (21) is slidably mounted on the transfer mounting platform (20), the moving platform (21) and the screw six (29) form a spiral pair, a transfer ring (22) is rotatably mounted on the outer side of the moving platform (21), and a motor four (23) is arranged on the moving platform (21), a gear four (24) is arranged on the output shaft of the motor four (23), and the gear four (24) is engaged with the transfer ring (22).

7. The automatic welding device for boiler pipes according to claim 6, characterized in that: The indexing ring (22) is connected to a position frame (25), and a motor five (26) and a screw rod five (31) are provided on the position frame (25). The motor five (26) is used to drive the screw rod five (31). A slide seat five (27) is slidably mounted on the position frame (25), and the slide seat five (27) and the screw rod five (31) form a spiral pair; a guide rod seven (32) and a screw rod seven (33) are movably provided on the slide seat five (27), and a motor seven (30) is provided on the slide seat five (27). A belt structure is provided on the output shaft of the motor seven (30), and one end of the belt structure forms a spiral pair with the screw rod seven (33).

8. The automatic welding device for boiler pipes according to claim 7, characterized in that: The bottom ends of the guide rod seven (32) and the screw rod seven (33) are provided with a clamping sleeve (34), and the clamping sleeve (34) is provided with a clamping electric cylinder (35) for clamping the pipeline.

9. The automatic welding device for boiler pipes according to claim 1, characterized in that: The welding processing mechanism includes a motor eight (36) and a screw rod eight (37) arranged on a frame (1), wherein the motor eight (36) is used to drive the screw rod eight (37), and the slide eight (38) and the screw rod eight (37) form a spiral pair. A driving motor (40) is provided on the telescopic rod of the movable electric cylinder (39), and a combined electric cylinder (41) is provided on the output shaft of the driving motor (40). The combined electric cylinder (41) is used to control the movement of the combined outer ring (42), and a control motor (43) is provided on the outside of the combined outer ring (42). A control gear (44) is provided on the output shaft of the control motor (43), and the control gear (44) is meshed with the combined inner ring (45).

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