CN112355522A

CN112355522A - Intelligent automobile pipeline connecting device and using method thereof

Info

Publication number: CN112355522A
Application number: CN202011241423.4A
Authority: CN
Inventors: 李会
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-02-12

Abstract

The invention discloses an intelligent automobile pipeline connecting device and a using method thereof, and the intelligent automobile pipeline connecting device comprises a bearing box, wherein a track is arranged in an inner cavity of the bearing box, the track is fixedly connected with a mounting plate, the mounting plate is fixedly connected with a bearing frame, the bearing frame is rotatably connected with balls, the mounting plate is provided with a first bearing plate, the first bearing plate is fixedly connected with a second bearing plate, the bottom of the second bearing plate is provided with a third bearing plate, the tops of the two second bearing plates are respectively provided with a positioning roller, the tops of the track are provided with two rollers, and the top of one side of the inner wall of. According to the invention, by utilizing the arrangement mode of the crawler, the outer wall of the crawler is equidistantly provided with the plurality of mounting plates, the bearing frame and the first bearing plate on the mounting plates can respectively bear the pipeline and the flange, and when the crawler moves, the first bearing plate can drive the pipeline and the flange to be attached to each other under the action of the stop block and then be welded, so that the production efficiency is improved.

Description

Intelligent automobile pipeline connecting device and using method thereof

Technical Field

The invention relates to the field of pipelines, in particular to an intelligent automobile pipeline connecting device and a using method thereof.

Background

Pipeline connection mode gathers, the connected mode that pipeline engineering is commonly used at present has threaded connection, welded connection, flange joint, socket joint connection, forms such as groove connection, when new energy automobile pipe connection, in order to facilitate the connection of pipeline, adopt flange joint's mode usually, when pipeline manufacture, generally with pipeline and flange welding together, because one side of flange is provided with the holding ring, can directly overlap the pipe box on the holding ring of flange one side, cup joint its location by the manual work usually, then weld its part of laminating again, the manual work is worked to it, the efficiency of pipeline production has been reduced, thereby reduce its practicality.

Disclosure of Invention

The invention aims to provide an intelligent automobile pipeline connecting device and a using method thereof, and aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an intelligent automobile pipeline connecting device and application method thereof, includes the bearing box, the inner chamber of bearing box is provided with the track, the outer wall equidistance fixedly connected with mounting panel of track, one side fixedly connected with bearing frame at mounting panel top, bearing frame's inner wall equidistance rotates and is connected with a plurality of balls, the opposite side at mounting panel top is provided with first loading board, the equal fixedly connected with second loading board in both sides at first loading board top, two bottom between the second loading board is provided with the third loading board, two the top of second loading board all is provided with positioning roller, the top of track is provided with two gyro wheels, the top fixedly connected with dog of bearing box inner wall one side.

Preferably, the bottom symmetry of bearing frame is provided with first connecting block, one side of first connecting block is provided with fixing bolt, first connecting block passes through fixing bolt and mounting panel fixed connection, the spout has been seted up at the top of mounting panel, the inner chamber fixedly connected with locating lever of spout, the outer wall slip interlude of locating lever has cup jointed the slider, the top and the first loading board fixed connection of slider, one side slip interlude of second loading board has cup jointed connecting bolt, the one end and the third loading board screw thread of connecting bolt outer wall cup joint.

Preferably, the outer wall of locating lever slides and has cup jointed first spring, first spring is located one side of slider, the top symmetry fixedly connected with second connecting block of second loading board, one side of second connecting block slides and has alternated and has cup jointed the connecting rod, two fixedly connected with first main shaft between the connecting rod, the outer wall and the location cylinder of first main shaft rotate and cup joint, the outer wall of connecting rod is fixed and has been cup jointed spacing lantern ring, the outer wall of connecting rod slides and has cup jointed the second spring, the second spring is located between spacing lantern ring and the second connecting block, the one end fixedly connected with stopper of connecting rod.

Preferably, the inside of bearing box is rotated and is connected with the second main shaft, the fixed cover of outer wall of second main shaft has connect and has born the weight of the cylinder, two bear the weight of the cylinder and be located the inside of track, two fourth loading boards of inside fixedly connected with of bearing box, the fourth loading board is located the inside of track, the fixed cover of bearing box that passes of one end of second main shaft outer wall has connect first gear.

Preferably, one side of the bearing box is rotatably connected with a third main shaft, a second gear is fixedly sleeved on the outer wall of the third main shaft and is meshed with the first gear, and a first belt pulley is fixedly sleeved at one end of the outer wall of the third main shaft.

Preferably, the bottom fixedly connected with first motor of bearing box, the output transmission of first motor is connected with the second belt pulley, be provided with first belt between second belt pulley and the first belt pulley, the positive one side of bearing box is provided with protective housing, second belt pulley, second gear, first belt pulley and first gear all are located protective housing's inside.

Preferably, the equal fixedly connected with support column in four edges at bearing box top, the top that bears the weight of the case is provided with two bracing pieces, two middle part fixedly connected with fifth loading board between the bracing piece, the top of support column one side is provided with positioning bolt, the support column passes through positioning bolt and the one end fixed connection of bracing piece, two third connecting blocks of bottom fixedly connected with of fifth loading board, two rotate between the third connecting block and alternate and cup joint the fourth main shaft, the outer wall and the gyro wheel of fourth main shaft are fixed and cup joint.

Preferably, the top of the fifth bearing plate is fixedly connected with a second motor, the output end of the second motor is connected with a third belt pulley in a transmission manner, the outer wall of the fourth main shaft is fixedly sleeved with a fourth belt pulley, the top of the fifth bearing plate is provided with a through hole, an inner cavity of the through hole is provided with a second belt, the second belt is located between the fourth belt pulley and the third belt pulley, a protection box is arranged outside the second motor, and the bottom of the protection box is fixedly connected with the fifth bearing plate.

Preferably, the second motor and the first motor are electrically connected with an external power supply through an external second motor switch and an external first motor switch respectively.

The use method of the intelligent automobile pipeline connecting device comprises the following specific feeding steps:

the method comprises the following steps: when a pipeline is butted with a flange, a first motor switch and a second motor switch are firstly turned on, the first motor is electrified, a third main shaft is driven to rotate through a second belt pulley, a first belt and a first belt pulley, the third main shaft drives a second gear to rotate, the second gear only has half of clamping teeth, so that the first gear is driven to rotate intermittently, the second main shaft drives a bearing roller to rotate intermittently, the crawler belt drives a plurality of mounting plates to move intermittently, meanwhile, the second motor is electrified, a fourth main shaft is driven to rotate through the third belt pulley, the second belt and a fourth belt pulley, and then the idler wheels are driven to rotate;

step two: when the first motor and the second motor are started, the flanges and the pipelines are butted and sequentially placed between the inside of a bearing frame for intermittent transportation of the crawler and two second bearing plates, when the pipelines are installed, the distance between the two positioning rollers is increased due to the extrusion force of the pipelines on the positioning rollers, when the bottom of the pipeline is attached to a third bearing plate, the connecting rod slides relative to the second connecting block under the action of the second spring, the distance between the two positioning rollers is reduced, the position of the pipeline is limited, when the crawler drives the first bearing plate to move, the baffle block can extrude the first bearing plate, so that the first bearing plate moves close to the bearing frame, the pipeline and the flanges are further attached tightly until the pipeline and the flanges are transported to the bottoms of the two rollers, and the bottoms of the rollers are respectively attached to the pipeline and the flanges, so as to drive the pipeline and the flanges to synchronously rotate, then welding the steel wire;

step three: after the pipeline is welded, the crawler belt continues to drive the mounting plate to move, when the other side of the crawler belt is reached, under the action of the stop blocks, the pipeline and the flange are separated from the bearing frame and the two second bearing plates respectively, and the pipeline and the flange after the welding are taken out from between the two support columns.

The invention has the technical effects and advantages that:

(1) according to the invention, by utilizing the arrangement mode of the crawler, the outer wall of the crawler is equidistantly provided with the plurality of mounting plates, the bearing frame and the first bearing plate on the mounting plates can respectively bear the pipeline and the flange, and when the crawler moves, the first bearing plate can drive the pipeline to be attached to the flange under the action of the stop block and then weld the pipeline and the flange, so that the production efficiency is improved;

(2) according to the invention, the arrangement mode of the second gear is utilized, the second gear is a gear with half of clamping teeth, so that when the second gear drives the first gear to move, the crawler belt can intermittently move, and the intermittent movement distance is the distance between the two mounting plates, so that the flange and the pipeline rotate for a circle to be welded and then are discharged under the action of the roller, and the practical performance is further improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the overall structure of the mounting plate of the present invention.

FIG. 3 is a side view of the mounting plate of the present invention.

FIG. 4 is a schematic side view of the present invention.

FIG. 5 is a front view of the interior of the carrying case of the present invention.

FIG. 6 is an enlarged view of the structure at A in FIG. 4 according to the present invention.

In the figure: 1. a carrying case; 2. a crawler belt; 3. mounting a plate; 4. a load-bearing frame; 5. a first bearing plate; 6. a second carrier plate; 7. a third bearing plate; 8. positioning the roller; 9. a roller; 10. a first connection block; 11. fixing the bolt; 12. positioning a rod; 13. a slider; 14. a first spring; 15. a connecting bolt; 16. a second connecting block; 17. a connecting rod; 18. a second spring; 19. a first main shaft; 20. a second main shaft; 21. a bearing roller; 22. a fourth bearing plate; 23. a stopper; 24. a first gear; 25. a third main shaft; 26. a second gear; 27. a first pulley; 28. a first motor; 29. a second pulley; 30. a support pillar; 31. a support bar; 32. a fifth bearing plate; 33. a third connecting block; 34. a fourth main shaft; 35. a protective box; 36. a second motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides an intelligent automobile pipeline connecting device and a using method thereof as shown in figures 1-6, which comprises a bearing box 1, wherein the inner cavity of the bearing box 1 is provided with a crawler belt 2, the outer wall of the crawler belt 2 is fixedly connected with a mounting plate 3 at equal intervals, one side of the top of the mounting plate 3 is fixedly connected with a bearing frame 4, the bearing frame 4 can limit the position of a flange, the inner wall of the bearing frame 4 is rotatably connected with a plurality of balls at equal intervals, the balls can drive the flange to rotate by a convenient roller 9, the other side of the top of the mounting plate 3 is provided with a first bearing plate 5, the two sides of the top of the first bearing plate 5 are fixedly connected with second bearing plates 6, the two second bearing plates 6, a third bearing plate 7 and two positioning rollers 8 can limit the position of a pipeline, the surface of the third bearing plate 7 is smooth, the roller 9 can drive the pipeline to rotate, the top of two second loading boards 6 all is provided with positioning roller 8, and the top of track 2 is provided with two gyro wheels 9, bears the top fixedly connected with dog 23 of 1 inner wall one side of case, and dog 23 is the V word shape of bowing, can carry out the position to first loading board 5 and prescribe a limit to make first loading board 5 slide on mounting panel 3, and then make the pipeline when the motion, lean on to the flange motion, and then keep its stability of welding time pipeline and flange joint.

The bottom of the bearing frame 4 is symmetrically provided with first connecting blocks 10, one side of each first connecting block 10 is provided with a fixing bolt 11, the first connecting blocks 10 are fixedly connected with the mounting plate 3 through the fixing bolts 11, the top of the mounting plate 3 is provided with a chute, the inner cavity of the chute is fixedly connected with a positioning rod 12, the outer wall of the positioning rod 12 is slidably inserted and sleeved with a sliding block 13, the top of the sliding block 13 is fixedly connected with the first bearing plate 5, one side of the second bearing plate 6 is slidably inserted and sleeved with a connecting bolt 15, the bearing frame 4 and the third bearing plate 7 can be separated from each other through the connecting bolt 15 and the fixing bolt 11, the bearing frame 4 and the third bearing plate 7 matched with a product are further replaced, the flange and the pipeline are further kept at a central position, the two rollers 9 are positioned at the same axis, so that the rollers 9 with different sizes are replaced to be attached to the flange and the pipeline, and the, thereby two gyro wheels 9 can make pipeline and flange with angular velocity rotation, thereby keep its welded stability, the one end and the 7 screw thread of third loading board of connecting bolt 15 outer wall cup joint, the outer wall of locating lever 12 slides and has cup jointed first spring 14, first spring 14 can make first loading board 5 reconversion, first spring 14 is located one side of slider 13, the top symmetry fixedly connected with second connecting block 16 of second loading board 6, one side of second connecting block 16 slides and alternates and has cup jointed connecting rod 17, fixedly connected with first main shaft 19 between two connecting rods 17, the outer wall of first main shaft 19 rotates with positioning drum 8 and cup joints, the outer wall of connecting rod 17 is fixed and has cup jointed the spacing lantern ring, the outer wall of connecting rod 17 slides and has cup jointed second spring 18, second spring 18 is located between spacing lantern ring and second connecting block 16, the one end fixedly connected with stopper of connecting rod 17.

The inside of the bearing box 1 is rotatably connected with a second main shaft 20, the outer wall of the second main shaft 20 is fixedly sleeved with bearing rollers 21, the two bearing rollers 21 are positioned inside the crawler 2, the inside of the bearing box 1 is fixedly connected with two fourth bearing plates 22, the fourth bearing plates 22 are positioned inside the crawler 2, one end of the outer wall of the second main shaft 20 penetrates through the bearing box 1 and is fixedly sleeved with a first gear 24, one side of the bearing box 1 is rotatably connected with a third main shaft 25, the outer wall of the third main shaft 25 is fixedly sleeved with a second gear 26, the second gear 26 only has half of clamping teeth, so that the second main shaft 20 rotates for one circle, only half of the circle drives the second main shaft 20 to rotate through the first gear 24, the crawler 2 intermittently moves, the rotating speed of the second main shaft 20 is low, the second main shaft 20 stops rotating when the clamping teeth on the second gear 26 are separated from the first gear 24, and the moving stability of the second, the second gear 26 is engaged with the first gear 24, a first belt pulley 27 is fixedly sleeved at one end of the outer wall of the third spindle 25, a first motor 28 is fixedly connected to the bottom of the bearing box 1, an output end of the first motor 28 is in transmission connection with a second belt pulley 29, a first belt is arranged between the second belt pulley 29 and the first belt pulley 27, a protective shell is arranged on one front side of the bearing box 1, and the second belt pulley 29, the second gear 26, the first belt pulley 27 and the first gear 24 are all located inside the protective shell.

Four corners of the top of the bearing box 1 are fixedly connected with supporting columns 30, the top of the bearing box 1 is provided with two supporting rods 31, the middle part between the two supporting rods 31 is fixedly connected with a fifth bearing plate 32, the bottom of the fifth bearing plate 32 is provided with a welding device which can weld a pipeline and a flange, the top of one side of the supporting column 30 is provided with a positioning bolt, the loosening positioning bolt can disassemble the supporting rods 31, so that the roller 9 can be conveniently replaced, the supporting column 30 is matched and corresponds to the corresponding pipeline and flange, the supporting column 30 is fixedly connected with one end of the supporting rod 31 through the positioning bolt, the bottom of the fifth bearing plate 32 is fixedly connected with two third connecting blocks 33, a fourth main shaft 34 is rotatably inserted and sleeved between the two third connecting blocks 33, the outer wall of the fourth main shaft 34 is fixedly sleeved with the roller 9, and the top of the fifth bearing plate 32 is fixedly, the output end of the second motor 36 is connected with a third belt pulley in a transmission manner, the outer wall of the fourth main shaft 34 is fixedly sleeved with a fourth belt pulley, a through hole is formed in the top of the fifth bearing plate 32, a second belt is arranged in the inner cavity of the through hole and located between the fourth belt pulley and the third belt pulley, a protection box 35 is arranged outside the second motor 36, and the bottom of the protection box 35 is fixedly connected with the fifth bearing plate 32.

Preferably, the second motor 36 and the first motor 28 are electrically connected to an external power source through an external second motor switch and an external first motor switch, respectively.

the method comprises the following steps: when the pipeline and the flange are butted, firstly, a first motor switch and a second motor switch are turned on, a first motor 28 is electrified, a third main shaft 25 is driven to rotate through a second belt pulley 29, a first belt and a first belt pulley 27, the third main shaft 25 drives a second gear 26 to rotate, the first gear 24 is driven to rotate intermittently because the second gear 26 only has half of clamping teeth, so that the second main shaft 20 drives a bearing roller 21 to rotate intermittently, the crawler belt 2 drives a plurality of mounting plates 3 to move intermittently, meanwhile, a second motor 36 is electrified, a fourth main shaft 34 is driven to rotate through the third belt pulley, the second belt and a fourth belt pulley, and then the roller 9 rotates;

step two: after the first motor 28 and the second motor 36 are started, the flanges and the pipelines are butted and sequentially placed between the two second bearing plates 6 and the inside of the bearing frame 4 for intermittent transportation of the crawler 2, when the pipelines are installed, the distance between the two positioning rollers 8 is increased due to the extrusion force of the pipelines on the positioning rollers 8, when the bottom of the pipeline is attached to the third bearing plate 7, the connecting rod 17 slides relative to the second connecting block 16 under the action of the second spring 18, the distance between the two positioning rollers 8 is reduced, the position of the pipeline is limited, when the crawler 2 drives the pipeline to move, the stopper 23 can extrude the first bearing plate 5, so that the first bearing plate 5 moves towards the bearing frame 4, the attachment between the pipelines and the flanges is enabled to be more compact until the pipelines and the flanges are transported to the bottoms of the two rollers 9, and the bottoms of the rollers 9 are respectively connected with the pipelines, The flanges are attached to drive the pipeline and the flanges to synchronously rotate, and then the pipeline and the flanges are welded;

step three: after the pipeline is welded, the crawler 2 continues to drive the mounting plate 3 to move, when the other side of the crawler 2 is reached, under the action of the stop block 23, the pipeline and the flange are separated from the bearing frame 4 and the two second bearing plates 6 respectively, and the pipeline and the flange after the welding are taken out from between the two support columns 30.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. An intelligent automobile pipeline connecting device comprises a bearing box (1) and is characterized in that a track (2) is arranged in an inner cavity of the bearing box (1), a mounting plate (3) is fixedly connected to the outer wall of the track (2) at equal intervals, a bearing frame (4) is fixedly connected to one side of the top of the mounting plate (3), a plurality of balls are rotatably connected to the inner wall of the bearing frame (4) at equal intervals, a first bearing plate (5) is arranged on the other side of the top of the mounting plate (3), second bearing plates (6) are fixedly connected to the two sides of the top of the first bearing plate (5), a third bearing plate (7) is arranged at the bottom between the two second bearing plates (6), a positioning roller (8) is arranged at the top of the two second bearing plates (6), two rollers (9) are arranged at the top of the track (2), the top of one side of the inner wall of the bearing box (1) is fixedly connected with a stop block (23).

2. The intelligent automobile pipeline connecting device according to claim 1, wherein the bottom of the bearing frame (4) is symmetrically provided with first connecting blocks (10), one side of each first connecting block (10) is provided with a fixing bolt (11), each first connecting block (10) is fixedly connected with the mounting plate (3) through the fixing bolt (11), the top of the mounting plate (3) is provided with a sliding groove, an inner cavity of the sliding groove is fixedly connected with a positioning rod (12), the outer wall of the positioning rod (12) is slidably inserted and sleeved with a sliding block (13), the top of the sliding block (13) is fixedly connected with the first bearing plate (5), one side of the second bearing plate (6) is slidably inserted and sleeved with a connecting bolt (15), and one end of the outer wall of the connecting bolt (15) is in threaded sleeve connection with the third bearing plate (7).

3. The intelligent automobile pipeline connecting device according to claim 2, the outer wall of the positioning rod (12) is sleeved with a first spring (14) in a sliding manner, the first spring (14) is positioned on one side of the sliding block (13), the top of the second bearing plate (6) is symmetrically and fixedly connected with a second connecting block (16), one side of the second connecting block (16) is slidably inserted and sleeved with a connecting rod (17), a first main shaft (19) is fixedly connected between the two connecting rods (17), the outer wall of the first main shaft (19) is rotatably sleeved with the positioning roller (8), the outer wall of the connecting rod (17) is fixedly sleeved with a limiting lantern ring, the outer wall of the connecting rod (17) is sleeved with a second spring (18) in a sliding manner, the second spring (18) is positioned between the limiting lantern ring and the second connecting block (16), and one end of the connecting rod (17) is fixedly connected with a limiting block.

4. The intelligent automobile pipeline connecting device according to claim 1, wherein a second main shaft (20) is rotatably connected to the inside of the bearing box (1), a bearing roller (21) is fixedly sleeved on the outer wall of the second main shaft (20), the two bearing rollers (21) are located inside the crawler (2), two fourth bearing plates (22) are fixedly connected to the inside of the bearing box (1), the fourth bearing plates (22) are located inside the crawler (2), and a first gear (24) is fixedly sleeved on one end of the outer wall of the second main shaft (20) penetrating through the bearing box (1).

5. The intelligent automobile pipeline connecting device according to claim 4, wherein a third main shaft (25) is rotatably connected to one side of the bearing box (1), a second gear (26) is fixedly sleeved on the outer wall of the third main shaft (25), the second gear (26) is meshed with the first gear (24), and a first belt pulley (27) is fixedly sleeved at one end of the outer wall of the third main shaft (25).

6. The intelligent automobile pipeline connecting device according to claim 5, wherein a first motor (28) is fixedly connected to the bottom of the bearing box (1), an output end of the first motor (28) is in transmission connection with a second belt pulley (29), a first belt is arranged between the second belt pulley (29) and the first belt pulley (27), a protective shell is arranged on one side of the front face of the bearing box (1), and the second belt pulley (29), the second gear (26), the first belt pulley (27) and the first gear (24) are all located inside the protective shell.

7. The intelligent automobile pipeline connecting device according to claim 1, wherein a support column (30) is fixedly connected to each of four corners of the top of the bearing box (1), two support rods (31) are arranged on the top of the bearing box (1), a fifth bearing plate (32) is fixedly connected to the middle between the two support rods (31), a positioning bolt is arranged at the top of one side of the support column (30), the support column (30) is fixedly connected with one end of each support rod (31) through the positioning bolt, two third connecting blocks (33) are fixedly connected to the bottom of the fifth bearing plate (32), a fourth main shaft (34) is rotatably inserted and sleeved between the third connecting blocks (33), and the outer wall of the fourth main shaft (34) is fixedly sleeved with the roller (9).

8. The intelligent automobile pipeline connecting device according to claim 7, wherein a second motor (36) is fixedly connected to the top of the fifth bearing plate (32), a third belt pulley is connected to an output end of the second motor (36) in a transmission manner, a fourth belt pulley is fixedly sleeved on the outer wall of the fourth main shaft (34), a through hole is formed in the top of the fifth bearing plate (32), a second belt is arranged in an inner cavity of the through hole and located between the fourth belt pulley and the third belt pulley, a protective box (35) is arranged outside the second motor (36), and the bottom of the protective box (35) is fixedly connected with the fifth bearing plate (32).

9. The intelligent automobile pipeline connecting device according to claim 7, wherein the second motor (36) and the first motor (28) are electrically connected with an external power supply through an external second motor switch and an external first motor switch respectively.

10. The use method of the intelligent automobile pipeline connecting device according to claim 1, characterized by comprising the following specific feeding steps:

the method comprises the following steps: when the pipeline and the flange are butted, firstly, a first motor switch and a second motor switch are turned on, a first motor (28) is electrified, a third main shaft (25) is driven to rotate through a second belt pulley (29), a first belt and a first belt pulley (27), the third main shaft (25) drives a second gear (26) to rotate, the second gear (26) only has half of clamping teeth, so that the first gear (24) is driven to rotate intermittently, the second main shaft (20) drives a bearing roller (21) to rotate intermittently, the crawler belt (2) drives a plurality of mounting plates (3) to move intermittently, meanwhile, the second motor (36) is electrified, the fourth main shaft (34) is driven to rotate through the third belt pulley, the second belt and a fourth belt pulley, and then the roller (9) is driven to rotate;

step two: after the first motor (28) and the second motor (36) are started, the flanges and the pipelines are butted and sequentially placed between the inside of a bearing frame (4) for intermittently transporting the crawler belt (2) and two second bearing plates (6), when the pipelines are installed, the distance between the two positioning rollers (8) is increased due to the extrusion force of the pipelines on the positioning rollers (8), when the bottom of the pipeline is jointed with a third bearing plate (7), the connecting rod (17) slides relative to the second connecting block (16) under the action of the second spring (18), the distance between the two positioning rollers (8) is reduced, the position of the pipeline is limited, when the crawler belt (2) drives the pipeline to move, the stop block (23) extrudes the first bearing plate (5), so that the first bearing plate (5) moves towards the bearing frame (4), and the joint between the pipelines and the flanges is tighter, conveying the pipeline and the flange to the bottoms of the two rollers (9), respectively attaching the bottoms of the rollers (9) to the pipeline and the flange, driving the pipeline and the flange to synchronously rotate, and then welding the pipeline and the flange;

step three: after the pipeline is welded, the crawler belt (2) continues to drive the mounting plate (3) to move, when the other side of the crawler belt (2) is reached, under the action of the stop blocks (23), the pipeline and the flange are separated from the bearing frame (4) and the two second bearing plates (6) respectively, and the pipeline and the flange after the welding are taken out from between the two support columns (30).