A submerged arc welding straight seam steel pipe pre-welding deviation rectifying device

Abstract

The application discloses a submerged-arc welding straight seam steel pipe pre-welding deviation rectifying device and belongs to the field of steel pipe welding. The submerged-arc welding straight seam steel pipe pre-welding deviation rectifying device comprises supporting legs, the top of the supporting legs is fixedly connected with a working plate, the front end top of the working plate is fixedly installed with a first clamp, the rear end of the first clamp is provided with a second clamp, the right side top of the working plate is provided with a welder, the lower portion of the welder is provided with an alignment assembly, the alignment assembly comprises a supporting plate, the top of the supporting plate is fixedly connected with the bottom of the second clamp, the bottom of the supporting plate is fixedly connected with the top of a sliding block, and the bottom of the sliding block is slidingly connected in a limiting frame. Through the setting of the alignment assembly, the two ends of the pipeline can be centrally aligned when the welder welds the pipeline, and the welding result can be effectively prevented from being affected by the deviation problem during the welding of the steel pipe.

Description

Technical Field

[0001] The present application relates to the field of steel pipe welding, and in particular to a pre-welding correction device for submerged arc welded straight seam steel pipes. Background Art

[0002] The pre-welding correction device for submerged arc welded straight seam steel pipes is a device designed specifically for pre-treatment of steel pipes before welding. The main function of the device is to pre-treat the steel pipes before welding and correct any possible deviation or bending of the steel pipes to ensure the straightness of the steel pipes and the welding quality. This pre-welding correction device plays a vital role in the pre-treatment process of steel pipes before welding. It can not only improve the straightness of the steel pipes, reduce the difficulty and error rate during welding, but also improve the welding quality and extend the service life of the steel pipes.

[0003] At present, the welding equipment we use is prone to difficulty in aligning the centers of the two steel pipes during the submerged arc welding process, which causes the test plate to deviate from the preset position, resulting in rough welds and reduced welding quality. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a pre-welding correction device for submerged arc welded straight seam steel pipes, which solves the problems raised in the above background technology. To achieve the above purpose, the present invention is implemented through the following technical solutions: A pre-welding correction device for submerged arc welded straight seam steel pipes, comprising a support leg, the top of the support leg is fixedly connected to a working plate, a first clamp is fixedly installed on the top of the front end of the working plate, a second clamp is provided at the rear end of the first clamp, a welder is provided on the upper right side of the working plate, an alignment assembly is provided below the welder, the alignment assembly comprises a support plate, the top of the support plate is fixedly connected to the bottom of the second clamp, the bottom of the support plate is fixedly connected to the top of the slider, the bottom of the slider is slidably connected in the limit frame, the bottom of the welder is equipped with a cross plate, the bottom of the cross plate is provided with an electric telescopic rod, the electric telescopic rod The output end is fixedly connected to the bottom of the horizontal plate, and the rear end bottom of the horizontal plate is fixedly connected to a first hydraulic rod, and the bottom of the first hydraulic rod is provided with a first hydraulic tank, and the top inner wall of the first hydraulic tank is slidably connected to the bottom outer wall of the first hydraulic rod, and the inner wall of the first hydraulic tank away from the first hydraulic rod is slidably connected to the second hydraulic rod, and the front end bottom of the horizontal plate is fixedly connected to the third hydraulic rod, and a second hydraulic tank is provided below the third hydraulic rod, and the top inner wall of the second hydraulic tank is slidably connected to the bottom outer wall of the third hydraulic rod, and the inner wall of the second hydraulic tank away from the third hydraulic rod is slidably connected to the fourth hydraulic rod, and a reference groove is opened on the middle part of the front end of the second clamp, and a reference rod is slidably connected to the reference groove.

[0005] Preferably, the front end bottom of the reference rod is fixedly connected to the rear end middle of the first clamp, the bottom of the limit frame is fixedly connected to the top of the working plate, and the bottom of the second hydraulic tank is fixedly connected to the top of the working plate.

[0006] Preferably, the bottom of the electric telescopic rod is fixedly connected to the top of the working plate, and the bottom of the first hydraulic compartment is fixedly connected to the top of the working plate.

[0007] Preferably, a protection assembly is provided on the second hydraulic rod, and the protection assembly includes a connecting rod, the front end of the connecting rod is fixedly connected to a rack, the right bottom of the rack is meshed with a gear, the rear end of the gear is hinged to a support column, the rear end of the support column is fixedly connected to a side plate, the front middle part of the gear is fixedly connected to a fixing column, the right side of the fixing column is fixedly connected to a mounting column, a protective cover is fixedly installed on the right side of the mounting column, and a first rotation groove is provided at the right rear end of the working plate.

[0008] Preferably, the gear is rotatably connected in the first rotating groove, the rear end of the connecting rod is fixedly connected to the left front end of the second hydraulic rod, and the bottom of the side plate is fixedly connected to the top of the working plate.

[0009] Preferably, the working plate is provided with a cleaning assembly, and the cleaning assembly includes a second rotating groove, the front end of the fixed column is fixedly connected to the rotating column, the front end of the rotating column is fixedly connected to the rotating frame, the left side of the rotating frame is rotatably connected to the roller, the left outer wall of the roller is hingedly provided with a connecting frame, the left side of the connecting frame is fixedly connected to a fifth hydraulic rod, and the left side of the fifth hydraulic rod is provided with a third hydraulic warehouse, the right side inner wall of the third hydraulic warehouse is slidingly connected to the left outer wall of the fifth hydraulic rod, the left inner wall of the third hydraulic warehouse is slidably connected to the sixth hydraulic rod, the bottom of the third hydraulic warehouse is fixedly connected to the support block, and the left side of the sixth hydraulic rod is fixedly connected to the shovel, the working plate is assembled with a collecting trough by bolts, and slides are fixedly installed at the front and rear ends of the connecting frame, the left side of the slide is fixedly connected to a spring, and the left side of the spring is fixedly connected to the vertical plate.

[0010] Preferably, the inner side of the vertical plate is fixedly connected to the outer side of the third hydraulic compartment, and the bottom of the support block is fixedly connected to the top of the working plate.

[0011] Preferably, the second rotation groove is opened at the front end of the right side of the working plate, and the rotating frame is rotatably connected in the second rotation groove.

[0012] The benefits of this application are:

[0013] (1) By setting an alignment component, the present application can align the pipes at both ends when the welder welds the pipes, which can effectively prevent the steel pipes from being offset during welding and affecting the welding results.

[0014] (2) The present application provides a protective component to separate the worker from the welder when the welder is welding the pipeline, thereby effectively preventing sparks from flying during the welding process from causing harm to the worker.

[0015] (3) The present application provides a cleaning component to collect the welding waste slag generated during the welding process of the welder on the pipe and store it in a collection tank, so that the top of the work plate can be kept clean at all times. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings that constitute part of this application are used to provide a further understanding of this application and make other features, objects and advantages of this application more apparent. The illustrative embodiment drawings of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a cross-sectional view of the present invention Figure 1 ;

[0019] Figure 3 This is a cross-sectional view of the present invention Figure 2 ;

[0020] Figure 4 This is a cross-sectional view of the present invention Figure 3 ;

[0021] Figure 5 This invention Figure 1 A magnified view of part A;

[0022] Figure 6 This invention Figure 4 A magnified view of part B;

[0023] Figure 7 This invention Figure 1 Magnified view of part C;

[0024] Figure 8 This invention Figure 2 An enlarged view of the D portion;

[0025] Figure 9 This invention Figure 3 A magnified view of part E;

[0026] Figure 10 This invention Figure 4 Magnified view of part F.

[0027] In the above figure,

[0028] 1. Support leg; 2. Working plate; 3. First clamp; 4. Second clamp; 5. Welder; 6. Alignment assembly; 61. Support plate; 62. Slider; 63. Limiting frame; 64. Cross plate; 65. Electric telescopic rod; 66. First hydraulic rod; 67. First hydraulic chamber; 68. Second hydraulic rod; 69. Third hydraulic rod; 610. Second hydraulic chamber; 611. Fourth hydraulic rod; 612. Reference slot; 613. Reference rod; 7. Protection assembly; 71. Connecting rod; 72. Gear bar; 73. gear; 74. support column; 75. side plate; 76. mounting column; 77. protective cover; 78. first rotating groove; 79. fixed column; 8. cleaning assembly; 81. second rotating groove; 82. rotating column; 83. rotating frame; 84. roller; 85. connecting frame; 86. fifth hydraulic rod; 87. third hydraulic bin; 88. support block; 89. sixth hydraulic rod; 810. shovel; 811. collecting trough; 812. slide plate; 813. spring; 814. vertical plate. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0030] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] Example 1

[0032] See also Figures 1-8The present embodiment provides a pre-welding correction device for a submerged arc welded straight seam steel pipe, comprising a support leg 1, a working plate 2 being fixedly connected to the top of the support leg 1, a first clamp 3 being fixedly mounted on the top of the front end of the working plate 2, a second clamp 4 being provided at the rear end of the first clamp 3, a welder 5 being provided on the upper right side of the working plate 2, an alignment assembly 6 being provided below the welder 5, the alignment assembly 6 comprising a support plate 61, the top of the support plate 61 being fixedly connected to the bottom of the second clamp 4, providing support force for the use of the second clamp 4 through the support plate 61, so that the second clamp 4 The use is more convenient. The bottom of the support plate 61 is fixedly connected to the top of the slider 62. The bottom of the slider 62 is slidably connected to the limit frame 63. The limit frame 63 is in a "convex" shape. The working plate 2 provides support for the use of the limit frame 63. It can effectively prevent the limit frame 63 from moving left and right during use, affecting the use result of the second clamp 4. The bottom of the welder 5 is equipped with a horizontal plate 64. The horizontal plate 64 provides support and power for the use of the welder 5. The bottom of the horizontal plate 64 is provided with an electric telescopic rod 65. The output of the electric telescopic rod 65 The end is fixedly connected to the bottom of the horizontal plate 64, and the rear end bottom of the horizontal plate 64 is fixedly connected to a first hydraulic rod 66, which provides power for the operation of the first hydraulic rod 66 through the horizontal plate 64, so that the first hydraulic rod 66 can achieve stable movement. A first hydraulic tank 67 is provided at the bottom of the first hydraulic rod 66, and the top inner wall of the first hydraulic tank 67 is slidably connected to the bottom outer wall of the first hydraulic rod 66. The inner wall of the end of the first hydraulic tank 67 away from the first hydraulic rod 66 is slidably connected to the second hydraulic rod 68, and the second hydraulic rod 68 is provided at the right front end of the second clamp 4. A third hydraulic rod 69 is fixedly connected to the bottom front end of the horizontal plate 64. A second hydraulic reservoir 610 is provided below the third hydraulic rod 69. The top inner wall of the second hydraulic reservoir 610 is slidably connected to the bottom outer wall of the third hydraulic rod 69. A fourth hydraulic rod 611 is slidably connected to the inner wall of the end of the second hydraulic reservoir 610 away from the third hydraulic rod 69. The fourth hydraulic rod 611 is provided at the left front end of the second clamp 4. A reference groove 612 is provided in the middle of the front end of the second clamp 4. The reference groove 612 is arc-shaped, and a reference rod 613 is slidably connected to the reference groove 612. The second hydraulic rod 68 and the fourth hydraulic rod 611 are at the same distance from the reference groove 612. The front bottom of the reference rod 613 is fixedly connected to the middle of the rear end of the first clamp 3, and the first clamp 3 provides support for the use of the reference rod 613. The bottom of the limit frame 63 is fixedly connected to the top of the work plate 2, and the bottom of the second hydraulic reservoir 610 is fixedly connected to the top of the work plate 2.The working plate 2 is used to provide support for the use of the second hydraulic chamber 610, and the bottom of the electric telescopic rod 65 is fixedly connected to the top of the working plate 2. The working plate 2 is used to provide support for the use of the electric telescopic rod 65, so that the use of the electric telescopic rod 65 is more stable. The bottom of the first hydraulic chamber 67 is fixedly connected to the top of the working plate 2, and the working plate 2 is used to provide support for the use of the first hydraulic chamber 67, which can effectively prevent the first hydraulic chamber 67 from moving during use and affect the use effect of the second hydraulic rod 68.

[0033] When the above-mentioned equipment is used, the pipe to be welded is fixed inside the first clamp 3, and the other pipe to be welded with the pipe is fixed inside the second clamp 4. At this time, the electric telescopic rod 65 is started to drive the cross plate 64 to move downward, so that the cross plate 64 squeezes the first hydraulic rod 66 into the interior of the first hydraulic chamber 67, and the second hydraulic rod 68 moves to the left. When the cross plate 64 moves downward, it can drive the third hydraulic rod 69 to squeeze into the second hydraulic chamber 610 below, and the downward squeezing of the third hydraulic rod 69 drives the fourth hydraulic rod 611 moves to the right, and the leftward movement of the second hydraulic rod 68 drives the fourth hydraulic rod 611 to move to the right, thereby pushing the pipe fixed in the second clamp 4, and realizing the movement of the slider 62 on the bottom support plate 61 of the second clamp 4 on the limit frame 63. When the rear end bottom of the reference rod 613 on the first clamp 3 and the reference groove 612 on the second clamp 4 can be aligned, the central alignment of the pipes inside the first clamp 3 and the second clamp 4 can be achieved. In the opposite direction, the second hydraulic rod 68 can realize the outward movement of the fourth hydraulic rod 611.

[0034] Example 2

[0035] See also Figure 2-Figure 9On the basis of the first embodiment, a protection assembly 7 is provided on the second hydraulic rod 68. The protection assembly 7 includes a connecting rod 71. The front end of the connecting rod 71 is fixedly connected to a rack 72. The connecting rod 71 provides support and power for the use of the rack 72, so that the rack 72 can be stably moved left and right on the working plate 2. The right bottom of the rack 72 is engaged with a gear 73. The rear end of the gear 73 is hinged with a support column 74. The support column 74 provides support for the use of the gear 73. The rear end of the support column 74 is fixedly connected to a side plate 75. 5 provides support for the support column 74, enabling stable operation. A fixing column 79 is fixedly connected to the front center of the gear 73, providing support and power for the fixing column 79. A mounting column 76 is fixedly connected to the right side of the fixing column 79. A protective cover 77 is fixedly mounted to the right side of the mounting column 76, providing support and power for the protective cover 77, enabling stable back-and-forth movement of the protective cover 77 on the work plate 2. A first rotation slot 78 is defined at the right rear end of the work plate 2. The gear 73 is rotatably connected within the first rotation slot 78. The rear end of the connecting rod 71 is fixedly connected to the left front end of the second hydraulic rod 68, providing support and power for the connecting rod 71 via the second hydraulic rod 68, enabling stable left and right movement of the connecting rod 71. The bottom of the side panel 75 is fixedly connected to the top of the work plate 2, providing support for the side panel 75 via the work plate 2, making it more stable.

[0036] When the above-mentioned equipment is in use, when it is necessary to align the first clamp 3 with the pipe inside the second clamp 4, the second hydraulic rod 68 moves to the left, which can drive the connecting rod 71 to move to the left, and the rack 72 moves to the left by moving the connecting rod 71 to the left. The gear 73 rotates to the left on the support column 74 through the movement of the rack 72 to the left, so that the gear 73 rotates stably. The fixed column 79 rotates to the left through the rotation of the fixed column 79 to the left, the mounting column 76 is flipped to the right through the rotation of the fixing column 79 to the left, and the protective cover 77 is flipped to the right through the flipping of the mounting column 76 to the right, so that the protective cover 77 covers the working plate 2. The opposite movement can realize that the mounting column 76 drives the protective cover 77 to move away from the working plate 2.

[0037] Example 3

[0038] See also Figure 3-10The second embodiment is based on the second embodiment. A cleaning assembly 8 is provided on the working plate 2. The cleaning assembly 8 includes a second rotating groove 81. The front end of the fixed column 79 is fixedly connected to the rotating column 82. The fixed column 79 provides support and power for the use of the rotating column 82, so that the rotating column 82 can achieve stable rotation. The front end of the rotating column 82 is fixedly connected to a rotating frame 83. The left side of the rotating frame 83 is rotatably connected to a roller 84. The left outer wall of the roller 84 is hinged with a connecting frame 85. There are eight arcs of the same size on the outside of the rotating frame 83, which are equidistantly installed on the outer wall of the connecting frame 85. The left side of the connecting frame 85 is fixedly connected to a fifth hydraulic rod 86. The left side of the fifth hydraulic rod 86 is provided with a third hydraulic tank 87. The right inner wall of the third hydraulic tank 87 is slidably connected to the left outer wall of the fifth hydraulic rod 86. The left inner wall of the third hydraulic tank 87 is slidably connected to the sixth hydraulic rod 8 9. The bottom of the third hydraulic warehouse 87 is fixedly connected with a support block 88, which provides support force for the use of the third hydraulic warehouse 87 through the support block 88, making the use of the third hydraulic warehouse 87 more convenient. The left side of the sixth hydraulic rod 89 is fixedly connected with a shovel 810, which provides support force and power for the use of the shovel 810, so that the shovel 810 can clean the welding residues on the working plate 2. The working plate 2 is equipped with a collection tank 811 by bolts, and the working plate 2 provides support force for the use of the collection tank 811. Slide plates 812 are fixedly installed at the front and rear ends of the connecting frame 85, and there are two slide plates 812. The connecting frame 85 provides support force and power for the use of the slide plate 812. The left side of the slide plate 812 is fixedly connected with a spring 813, and there are two springs 813. The left side of the spring 813 is fixedly connected with a vertical plate 814. The inner side of the vertical plate 814 is fixedly connected to the outer side of the third hydraulic chamber 87. There are two vertical plates 814, and the third hydraulic chamber 87 provides support for the use of the vertical plates 814. The bottom of the support block 88 is fixedly connected to the top of the work plate 2. The work plate 2 provides support for the use of the support block 88. The second rotation groove 81 is defined at the right front end of the work plate 2, and the rotating frame 83 is rotatably connected to the second rotation groove 81.

[0039] When the above-mentioned equipment is in use, after the welding device 5 completes welding the connection of the pipe, the upward movement of the electric telescopic rod 65 drives the first hydraulic rod 66 to move upward in the first hydraulic chamber 67, and the upward movement of the first hydraulic rod 66 drives the second hydraulic rod 68 to move to the right, and the rightward movement of the second hydraulic rod 68 drives the rack 72 on the connecting rod 71 to move to the right, so that the gear 73 below the rack 72 rotates to the right on the support column 74, and the rightward rotation of the gear 73 drives the fixed column 79 to rotate to the right, and the rightward rotation of the fixed column 79 drives the rotating column 82 to rotate, and the rotation of the rotating column 82 drives the rotating frame 83 to rotate in the second rotating groove 81. When the rotating frame 83 rotates to the outermost side, it can drive the roller 84 to move to the left in the connecting frame 85. When 85 moves to the left, it can drive the slide plate 812 to move to the left. The left movement of the slide plate 812 drives the spring 813 to squeeze the vertical plate 814 on the left. When the rotating frame 83 rotates to the lowest point, under the pushing force of the spring 813, the slide plate 812 can drive the roller 84 on the inner side of the connecting frame 85 to move to the right, so that the roller 84 on the inner side of the connecting frame 85 can achieve stable left and right movement. The left and right movement of the connecting frame 85 drives the fifth hydraulic rod 86 to squeeze back and forth towards the inside of the third hydraulic warehouse 87, so that the sixth hydraulic rod 89 can achieve back and forth left and right movement on the working plate 2. The left and right movement of the sixth hydraulic rod 89 drives the shovel 810 to achieve stable left and right movement on the working plate 2, so that the shovel 810 can push the welding residue on the working plate 2 into the collection tank 811, so as to clean the surface of the working plate 2.

[0040] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A pre-welding correction device for a submerged arc welded straight seam steel pipe, comprising a support leg (1), the top of the support leg (1) being fixedly connected to a working plate (2), characterized in that: A first clamp (3) is fixedly installed on the top of the front end of the working plate (2), and a second clamp (4) is provided at the rear end of the first clamp (3). A welder (5) is provided on the upper right side of the working plate (2), and an alignment component (6) is provided below the welder (5). The alignment component (6) includes a support plate (61), the top of the support plate (61) is fixedly connected to the bottom of the second clamp (4), the bottom of the support plate (61) is fixedly connected to the top of the slider (62), and the bottom of the slider (62) is slidably connected in the limit frame (63). The bottom of the welder (5) is equipped with a transverse plate (64), and an electric telescopic rod (65) is provided at the bottom of the transverse plate (64). The output end of the electric telescopic rod (65) is fixedly connected to the bottom of the transverse plate (64), and the rear end bottom of the transverse plate (64) is fixedly connected to a first hydraulic rod (66). A first hydraulic bin (67) is provided at the bottom of the first hydraulic rod (66), the top inner wall of the first hydraulic bin (67) is slidably connected to the bottom outer wall of the first hydraulic rod (66), the inner wall of one end of the first hydraulic bin (67) away from the first hydraulic rod (66) is slidably connected to the second hydraulic rod (68), the front bottom of the cross plate (64) is fixedly connected to the third hydraulic rod (69), a second hydraulic bin (610) is provided below the third hydraulic rod (69), the top inner wall of the second hydraulic bin (610) is slidably connected to the bottom outer wall of the third hydraulic rod (69), the inner wall of one end of the second hydraulic bin (610) away from the third hydraulic rod (69) is slidably connected to the fourth hydraulic rod (611), a reference groove (612) is provided on the middle part of the front end of the second clamp (4), and a reference rod (613) is slidably connected to the reference groove (612); The second hydraulic rod (68) is provided with a protection assembly (7), the protection assembly (7) includes a connecting rod (71), the front end of the connecting rod (71) is fixedly connected to a rack (72), the right bottom of the rack (72) is meshed with a gear (73), the rear end of the gear (73) is hinged to a support column (74), the rear end of the support column (74) is fixedly connected to a side plate (75), the middle of the front end of the gear (73) is fixedly connected to a fixing column (79), the right side of the fixing column (79) is fixedly connected to a mounting column (76), the right side of the mounting column (76) is fixedly installed with a protection cover (77), and the right rear end of the working plate (2) is provided with a first rotation groove (78); The gear (73) is rotatably connected in the first rotation groove (78), the rear end of the connecting rod (71) is fixedly connected to the left front end of the second hydraulic rod (68), and the bottom of the side plate (75) is fixedly connected to the top of the working plate (2).

2. The pre-welding deviation correction device for submerged arc welded straight seam steel pipe according to claim 1, characterized in that: The front bottom of the reference rod (613) is fixedly connected to the middle of the rear end of the first clamp (3), the bottom of the limit frame (63) is fixedly connected to the top of the working plate (2), and the bottom of the second hydraulic chamber (610) is fixedly connected to the top of the working plate (2).

3. The pre-welding deviation correction device for submerged arc welded straight seam steel pipe according to claim 1, characterized in that: The bottom of the electric telescopic rod (65) is fixedly connected to the top of the working plate (2), and the bottom of the first hydraulic compartment (67) is fixedly connected to the top of the working plate (2).

4. The pre-welding deviation correction device for submerged arc welded straight seam steel pipe according to claim 3, characterized in that: The working plate (2) is provided with a cleaning assembly (8), the cleaning assembly (8) includes a second rotating groove (81), the front end of the fixed column (79) is fixedly connected to the rotating column (82), the front end of the rotating column (82) is fixedly connected to the rotating frame (83), the left side of the rotating frame (83) is rotatably connected to the roller (84), the left outer wall of the roller (84) is hinged with a connecting frame (85), the left side of the connecting frame (85) is fixedly connected to the fifth hydraulic rod (86), the left side of the fifth hydraulic rod (86) is provided with a third hydraulic chamber (87), the right inner wall of the third hydraulic chamber (87) is hinged with the left outer wall of the roller (84), the left side of the connecting frame (85) is fixedly connected to the fifth hydraulic rod (86), the left side of the fifth hydraulic rod (86) is provided with a third hydraulic chamber (87), and the right inner wall of the third hydraulic chamber (87) is hinged with the left outer wall of the roller (84). The wall is slidably connected to the left outer wall of the fifth hydraulic rod (86), the left inner wall of the third hydraulic chamber (87) is slidably connected to the sixth hydraulic rod (89), the bottom of the third hydraulic chamber (87) is fixedly connected to the support block (88), the left side of the sixth hydraulic rod (89) is fixedly connected to the shovel (810), the working plate (2) is equipped with a collecting trough (811) by bolts, the front and rear ends of the connecting frame (85) are fixedly installed with a slide plate (812), the left side of the slide plate (812) is fixedly connected to a spring (813), and the left side of the spring (813) is fixedly connected to a vertical plate (814).

5. The pre-welding deviation correction device for submerged arc welded straight seam steel pipe according to claim 4, characterized in that: The inner side of the vertical plate (814) is fixedly connected to the outer side of the third hydraulic chamber (87), and the bottom of the support block (88) is fixedly connected to the top of the working plate (2).

6. The pre-welding deviation correction device for submerged arc welded straight seam steel pipe according to claim 5, characterized in that: The second rotation groove (81) is opened at the front end of the right side of the working plate (2), and the rotation frame (83) is rotatably connected in the second rotation groove (81).

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