Large-depth submerged arc super-thick plate welding system

Abstract

The utility model relates to a large-depth submerged arc super-thick plate welding system which comprises a welding manipulator and a welding machine head. The welding manipulator comprises a walking trolley, a stand column, a guide seat and a cross arm, the stand column is rotationally arranged above the walking trolley, the guide seat is arranged on the stand column in an up-down lifting mode, and the cross arm is arranged on the guide seat in a left-right sliding mode; a welding machine head is rotatably arranged at one end of the cross arm, the welding machine head is horizontally perpendicular to the cross arm, the welding machine head comprises a rotating frame, a welding wire reel, a wire feeding device, a cross supporting frame, a conductive sleeve, a conductive rod and a conductive nozzle, the welding wire reel with a welding wire is arranged above the rotating frame, and the wire feeding device is arranged at one end of the rotating frame in a cross-shaped sliding mode; a transverse supporting frame is arranged at one end of the wire feeding device, a conductive sleeve is arranged in the transverse supporting frame, a conductive rod is downwards and vertically arranged at the end of the transverse supporting frame, and the lower end of the conductive rod is obliquely bent and rotationally provided with a flat conductive nozzle. The automatic welding device is suitable for automatic welding of super-thick plates and large-depth narrow-gap grooves of large pressure containers, and welding quality and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of submerged arc welding, in particular to a large-depth submerged arc ultra-thick plate welding system. Background Art

[0002] For the welding of pressure vessels, especially large pressure vessels made of ultra-thick plates, the welding requirements for pressure vessels are gradually increasing. The ultra-thick plates of various pressure vessel parts are butted to form a groove with a deep depth and narrow gap, which requires submerged arc welding and welding in multiple layers and multiple passes, that is, multiple layers need to be welded and multiple passes are required for each layer. The surface of the pressure vessel is not a smooth cylinder, but has ear plates and other parts.

[0003] At present, deep submerged arc welding in this field is mostly carried out manually due to the influence of the structure and size of the welding matrix, that is, the pressure vessel workpiece. This undoubtedly requires a large amount of welding work and high welding strength, and is prone to welding defects. It is difficult to manually ensure that all welds are consistent after multi-layer and multi-pass welding, and the welding quality cannot be effectively guaranteed.

[0004] The welding of grooves with large depth and narrow gap not only requires high technical skills from workers, but also is difficult to weld. Moreover, the submerged arc welding guns used by workers are limited by their structural size and cannot be well inserted into the grooves with large depth and narrow gap for welding, which also affects the welding quality.

[0005] Conventional submerged arc welding machines are relatively large in size, especially the head of the welding machine where different devices are centrally arranged, which will occupy a certain space. Since there are ear plates and other parts on the surface of the pressure vessel, it is difficult for the welding machine head to approach the welding matrix, which makes it inconvenient to carry out welding operations. For example, patent publication number CN209754240U discloses a manipulator welding control system, which is only suitable for the welding of circular cylinders. If there are other parts on the surface of the circular cylinder, and the telescopic control mechanism is relatively large, it will inevitably affect the welding operation of the welding equipment moving back and forth. Summary of the invention

[0006] In order to solve the problems of low manual welding efficiency, poor quality and high welding strength, the utility model provides a large-depth submerged arc ultra-thick plate welding system, adopts a mechanized welding system, and cooperates with a welding positioner to realize automatic welding of welding matrices such as pressure vessels. At the same time, the welding machine head part can effectively approach the surface of the welding matrix to perform large-depth narrow-gap groove welding operations.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] The deep submerged arc ultra-thick plate welding system cooperates with the welding positioner to realize the submerged arc welding of the matrix, including a welding manipulator and a welding machine head. The welding machine head is cross-slidingly arranged on the welding manipulator to facilitate the movement of the welding machine head in the cross direction;

[0009] The welding operation machine comprises a trolley, a column, a guide seat and a cross arm. The column is rotatably arranged above the trolley to facilitate adjustment of the column direction. The column is lifted and lowered with the guide seat to facilitate up and down movement of the guide seat. The cross arm is slidably arranged on the guide seat to facilitate left and right movement of the cross arm. The cross arm and the column are arranged in a cross shape.

[0010] The welding machine head is rotatably arranged at one end of the cross arm, the angle between the welding machine head and the cross arm is adjustable, the welding machine head is arranged horizontally and perpendicularly to the cross arm, the welding machine head comprises a rotating frame, a welding wire reel, a wire feeding device, a cross support frame, a conductive sleeve and a conductive rod and a conductive nozzle, the welding wire reel with welding wire is arranged above the rotating frame, and the wire feeding device is cross-slidably arranged at one end of the rotating frame, so as to facilitate the up and down, forward and backward movement of the wire feeding device;

[0011] A cross support is arranged at one end of the wire feeding device, the conductive sleeve is arranged in the cross support, the conductive rod is arranged vertically downward at the end of the cross support, the lower end of the conductive rod is inclined and bent and rotatably provided with a flat conductive nozzle, which is suitable for groove welding with a large longitudinal depth and a narrow gap. After passing through the wire feeding device, the welding wire on the welding wire reel is successively inserted into the conductive sleeve, the conductive rod and the conductive nozzle and then extends out.

[0012] Furthermore, the columns are arranged vertically to provide space for the guide seat to move up and down. An electric turntable is provided between the columns and the walking trolley to facilitate the rotation of the columns. The guide seat is arranged on one side of the columns, and a ladder with a protective cage is provided on the other side of the columns. The ladder extends upward from the bottom of the columns to the top of the columns, so that workers can go up and down the columns conveniently.

[0013] The welding operation machine also includes a welding power supply and a welding electrical cabinet, which are arranged on both sides of the bottom of the column to provide the welding machine head with the power required for welding and facilitate the control of the welding operation machine.

[0014] Furthermore, the interior of the column is hollow, a counterweight block is provided inside the column to slide up and down, an operating table with a guardrail is provided on the top of the column, and a longitudinal movement motor is provided on the operating table;

[0015] The longitudinal movement motor is engaged with two traction chains, which facilitates the two traction chains to rotate synchronously. One end of each traction chain extends into the interior of the column and connects to the counterweight block, and the other end of the traction chain extends to the exterior of the column and connects to the guide seat. The longitudinal movement motor can simultaneously drive the counterweight block and the guide seat to move up and down through the traction chain, and the movement directions of the counterweight block and the guide seat are opposite.

[0016] Furthermore, vertical guide rails are arranged on the left and right sides of the column, and four groups of wheel sets are arranged on the back of the guide seat. The four groups of wheel sets are arranged in a rectangular shape, and two groups of wheel sets corresponding to the upper and lower groups slide up and down along a vertical guide rail. Each group of wheel sets includes a vertical guide roller and a vertical limit roller. The vertical guide roller and the vertical limit roller slide up and down along the two adjacent side surfaces of the vertical guide rail, so as to facilitate guiding the guide seat to move up and down along the column and prevent the guide seat from separating from the column.

[0017] Furthermore, a lateral movement motor is arranged on both sides of the guide seat, and the lateral movement motor and the cross arm gear rack are driven to facilitate driving the cross arm to move left and right, and the cross arm is arranged horizontally;

[0018] Horizontal guide rails are arranged on the upper and lower sides of the cross arm, and four groups of wheel sets 2 are arranged on the front of the guide seat. The four groups of wheel sets 2 are arranged in a rectangular shape, and the two groups of wheel sets 2 corresponding to the left and right slide left and right along a cross guide rail. Each group of wheel sets 2 includes a cross guide roller and a cross limit roller. The cross guide roller and the cross limit roller slide left and right along the two adjacent side surfaces of the cross guide rail, so as to guide the guide seat to move left and right along the cross arm and prevent the guide seat from separating from the cross arm.

[0019] Furthermore, a fixing seat is provided at one end of the cross arm, the rotating frame is rotatably arranged on the fixing seat, and a hinge bolt is passed through between the fixing seat and the rotating frame, so as to facilitate the rotatable installation of the welding machine head and the end of the cross arm;

[0020] The welding machine head also includes a vertical electric slide and a transverse electric slide. The vertical electric slide is arranged at one end of the rotating frame, the transverse electric slide is arranged to lift and lower the vertical electric slide, and the wire feeding device is arranged on the transverse electric slide to slide forward and backward, which facilitates the cross-direction movement of the wire feeding device.

[0021] Furthermore, the conductive sleeve is horizontally arranged in the cross brace, and the length of the conductive sleeve is not less than 1700mm, providing sufficient length to facilitate the depth of the end of the welding machine head. A mounting clamp is provided below the end of the cross brace, and the upper end of the conductive rod is movably connected to the mounting clamp to facilitate adjustment of the direction of the conductive rod. The length of the conductive rod is not higher than 300mm to prevent the conductive rod from touching the parts on the surface of the welding matrix.

[0022] The conductive nozzle is threadedly connected to the lower end of the conductive rod. The lower end of the conductive nozzle is in an inverted truncated cone shape. A reducing groove is provided on the side wall of the conductive nozzle to reduce the diameter of the conductive nozzle, so as to facilitate the conductive nozzle to extend into the groove with a large depth and narrow gap.

[0023] Furthermore, a flux conveying and recycling integrated machine is provided at the other end of the cross arm, and the flux conveying and recycling integrated machine is connected with a flux conveying pipe and a flux recycling pipe, and the flux conveying pipe and the flux recycling pipe are arranged along the cross arm and bent to extend to the welding machine head position;

[0024] One end of the flux delivery pipe is connected to a flat flux funnel, and the outlet of the flux funnel faces the conductive nozzle, which is convenient for the flux to flow to the conductive nozzle. One end of the flux recovery pipe is connected to a suction nozzle to realize negative pressure adsorption recovery of the flux. The flux funnel, conductive rod and suction nozzle are arranged in sequence in a straight line. The thickness of the flux funnel matches the diameter of the conductive rod, which also facilitates the flux funnel to extend into the narrow gap groove.

[0025] Through the above technical solution, the beneficial effects of the utility model are:

[0026] The utility model has a reasonable structural design. The welding operating machine can conveniently drive the welding machine head to move in a cross direction. The longitudinal movement motor drives the guide seat and the cross arm to lift and lower at the same time, which can drive the welding machine head to move up and down. The cross movement motor drives the cross arm to move left and right, which can drive the welding machine head to move left and right, thereby realizing a large range of rapid movement of the welding machine head and meeting the welding needs of large pressure vessels.

[0027] The welding machine head of the utility model can also be fine-tuned in a small range. The vertical electric slide and the horizontal electric slide of the welding machine head can easily drive the welding gun to move up and down and forward and backward. The conductive rod and the conductive nozzle are combined to form a welding gun. One end of the welding machine head is narrow, and the welding machine head has a long length as a whole, which can effectively avoid the parts on the surface of the welding matrix and complete the depth of the welding gun. The height of the conductive rod is limited, firstly to prevent the welding gun from touching the parts when it is raised, and secondly to meet the depth in the middle of the parts.

[0028] The lower end of the conductive nozzle of the utility model is in the shape of an inverted truncated cone, the size of the lower end of the conductive nozzle gradually decreases, and there is a diameter reducing groove on the side wall of the conductive nozzle, which can further reduce the size of the conductive nozzle, so that the conductive nozzle can be conveniently inserted into the groove with a large vertical depth and a narrow gap for welding. The conductive nozzle can have different lengths and sizes to facilitate insertion into the groove with a narrow gap of different depths. The conductive rod is movably installed by using the mounting clamp, which facilitates the adjustment of the angle of the conductive rod, and can also change the wire outlet angle of the welding wire in the weld, so that the welding wire is biased toward the side wall of the groove.

[0029] The utility model can be used in conjunction with a welding positioner to automatically weld welding matrices such as pressure vessels, and is suitable for large pressure vessels with ultra-thick plates and grooves with large depths and narrow gaps. The welding process can be automated, reducing manpower and ensuring welding quality. The welding gun can be easily inserted into the groove with large depths and narrow gaps for welding, while the flux funnel fills the groove with flux, and the suction nozzle can also recycle the flux, improving welding efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is an axonometric diagram of the welding state of the large longitudinal depth submerged arc ultra-thick plate welding system of the utility model.

[0031] Figure 2 It is an axonometric diagram of the large-depth submerged arc ultra-thick plate welding system of the utility model.

[0032] Figure 3 It is a top view of the counterweight block inside the column of the large vertical depth submerged arc ultra-thick plate welding system of the utility model.

[0033] Figure 4 This is an axonometric view of a vertical movement motor on the top of a column of a large-depth submerged arc ultra-thick plate welding system of the utility model, in which the guardrail is not shown.

[0034] Figure 5 The utility model is a side view of the installation of a column, a guide seat and a cross arm of a large-depth submerged arc ultra-thick plate welding system.

[0035] Figure 6 It is an axonometric diagram of the installation of columns and guide seats of the large-depth submerged arc ultra-thick plate welding system of the utility model.

[0036] Figure 7 The utility model is an axonometric diagram of a wheel set on a guide seat of a large longitudinal depth submerged arc ultra-thick plate welding system.

[0037] Figure 8 It is an axonometric diagram of the installation of a guide seat and a cross arm of a large-depth submerged arc ultra-thick plate welding system of the utility model.

[0038] Fig. 9 It is a two-axonometric drawing of a wheel set on a guide seat of a large longitudinal depth submerged arc ultra-thick plate welding system of the utility model.

[0039] Fig.10 The utility model is a schematic diagram of the installation of a welding machine head and a cross arm of a large-depth submerged arc ultra-thick plate welding system.

[0040] Fig.11 It is an axonometric diagram of a welding machine head of a large-depth submerged arc ultra-thick plate welding system of the utility model.

[0041] Fig.12 It is a top view of a disassembled welding machine head of a deep submerged arc ultra-thick plate welding system of the utility model.

[0042] Fig.13 It is one of the axonometric drawings of the conductive rod of the large longitudinal depth submerged arc ultra-thick plate welding system of the utility model.

[0043] Fig.14 This is the second axonometric drawing of the conductive rod of the large-depth submerged arc ultra-thick plate welding system of the utility model.

[0044] The numbers in the attached drawings are: 1 welding manipulator, 2 welding machine head, 3 walking trolley, 4 column, 5 guide seat, 6 cross arm, 7 electric turntable, 8 counterweight, 9 guardrail, 10 operating table, 11 longitudinal movement motor, 12 traction chain, 13 ladder, 14 vertical guide rail, 15 wheel set 1, 151 vertical guide roller, 152 vertical limit roller, 16 transverse movement motor, 161 motor body, 162 transmission gear, 17 transmission rack, 18 transverse guide rail, 19 wheel set 2, 191 transverse guide roller, 1 92 horizontal limit roller, 20 control panel, 21 rotating frame, 22 welding wire reel, 23 wire feeding device, 24 horizontal support frame, 25 conductive sleeve, 26 conductive rod, 27 conductive nozzle, 28 fixed seat, 29 hinge bolt, 30 vertical electric slide, 31 horizontal electric slide, 32 mounting splint, 33 reducing groove, 34 flux conveying and recycling integrated machine, 35 flux conveying pipe, 36 flux recovery pipe, 37 flux funnel, 38 welding power supply, 39 welding electrical cabinet, 40 laser displacement sensor. DETAILED DESCRIPTION

[0045] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings:

[0046] like Figure 1 to Figure 14 As shown in the figure, the deep submerged arc ultra-thick plate welding system cooperates with the welding positioner to realize the submerged arc welding of the matrix. The welding positioner is used to drag the workpiece to be welded, that is, the matrix, so that the weld to be welded moves to the ideal position for welding. The welding positioner drives the matrix to change its posture and cooperates with the deep submerged arc ultra-thick plate welding system to realize the welding operation of the pressure vessel, such as Figure 1 As shown, the welding positioner is not shown in the figure.

[0047] The deep submerged arc ultra-thick plate welding system comprises a welding manipulator 1 and a welding machine head 2. The welding manipulator 1 is provided with a welding machine head 2 in a cross-sliding manner, that is, the welding manipulator 1 can drive the welding machine head 2 to move linearly in the up-down and left-right directions, so as to realize a large-scale rapid displacement of the welding machine head 2, and meet the welding requirements of large pressure vessels, such as Figure 2 At the same time, the welding machine head 2 itself can also move slightly within a small range to ensure the accuracy of the welding position on the parent body.

[0048] The welding manipulator 1 comprises a trolley 3, a column 4, a guide seat 5 and a cross arm 6. The trolley 3 is a self-propelled trolley 3 on a track, and a column 4 is rotatably arranged above the trolley 3. An electric turntable 7 is arranged between the column 4 and the trolley 3, and the electric turntable 7 can drive the column 4 to rotate in a circumferential direction, and the column 4 moves with the trolley 3.

[0049] The column 4 is vertically arranged, and a guide seat 5 is arranged on the column 4 for up-and-down lifting, that is, the guide seat 5 can move up and down along the column 4. In order to realize the up-and-down drive of the guide seat 5, the inside of the column 4 is hollow, and a counterweight 8 is arranged to slide up and down inside the column 4, as Figure 3 shown. An operating platform 10 with a guardrail 9 is arranged at the top of the column 4. The operating platform 10 is horizontally arranged, and the guardrail 9 is bent into a "凵" shape and arranged on the edge of the operating platform 10. A longitudinal movement motor 11 is arranged on the operating platform 10. The longitudinal movement motor 11 includes a reducer and a transmission box with a worm and worm gear structure. The output shaft of the reducer is connected to the input end of the transmission box. The transmission box adopts a double output shaft, as Figure 4 shown.

[0050] Two traction chains 12 are engaged with the longitudinal movement motor 11, that is, sprockets are installed on the double output shafts of the transmission box, and a traction chain 12 is wound around each sprocket. When the longitudinal movement motor 11 operates, the two traction chains 12 can be driven to move simultaneously. One end of each traction chain 12 extends into the column 4 and is connected to the counterweight 8, and the other end of the traction chain 12 extends out of the column 4 and is connected to the guide seat 5. Thus, the up-and-down lifting movement of the guide seat 5 can be realized by the forward and reverse operation of the longitudinal movement motor 11 and the drive of the traction chain 12.

[0051] To facilitate personnel to climb to the top of the column 4, the guide seat 5 is arranged on one side of the column 4, and a ladder 13 with a protective cage is arranged on the other side corresponding to the column 4. The ladder 13 extends upward from the bottom of the column 4 to the top of the column 4. The staff can climb the column 4 through the ladder 13, and the protective cage protects the safety of personnel.

[0052] On the basis of driving the guide seat 5 to move up and down by the longitudinal movement motor 11, in order to realize the guidance of the movement of the guide seat 5, vertical guide rails 14 are arranged on the left and right sides of the column 4. The vertical guide rails 14 are rectangular long rod-shaped. At the same time, four groups of wheel sets 15 are arranged on the back of the guide seat 5. The four groups of wheel sets 15 are arranged in a rectangular shape, and the two groups of wheel sets 15 corresponding up and down slide up and down along a vertical guide rail 14, as Figure 6 shown.

[0053] In this embodiment, each group of wheel sets 15 includes a vertical guiding roller and a vertical limiting roller 152. The rotation directions of the vertical guiding roller and the vertical limiting roller 152 are perpendicular to each other. The vertical guiding roller and the vertical limiting roller 152 slide up and down along the adjacent two side surfaces of the vertical guide rail 14, as Figure 7 shown. The vertical guiding rollers of the four groups of wheel sets 15 cooperate with each other to prevent the guide seat 5 from shifting left and right. The vertical limiting rollers 152 of the four groups of wheel sets 15 cooperate with each other to prevent the guide seat 5 from detaching from the column 4. Thus, under the action of the four groups of wheel sets 15, the guide seat 5 can be ensured to move up and down along the column 4 stably and reliably.

[0054] A cross arm 6 is provided on the guide seat 5 to slide left and right. The cross arm 6 is arranged horizontally. The cross arm 6 and the column 4 are arranged in a cross shape. The guide seat 5 moves up and down, while the cross arm 6 moves left and right. Thus, the moving direction of the guide seat 5 is perpendicular to the moving direction of the cross arm 6. On the basis that the guide seat 5 can be lifted up and down, it can also drive the cross arm 6 to move up and down together.

[0055] In order to realize the left and right sliding of the cross arm 6 relative to the guide seat 5, a traverse motor 16 is arranged on both sides of the guide seat 5, and the traverse motor 16 and the cross arm 6 are driven by a gear rack. Specifically, the traverse motor 16 on each side includes a motor body 161 and a transmission gear 162 arranged on the output shaft of the motor body 161, and a transmission rack 17 is arranged on the cross arm 6, and the transmission rack 17 is arranged in a straight line along the length direction of the cross arm 6, and the transmission gear 162 and the transmission rack 17 are meshed, as shown in FIG. Figure 5 The two transverse motors 16 operate synchronously to drive the cross arm 6 to move transversely. The transverse motor 16 can control the transverse direction of the cross arm 6 after running forward and reverse.

[0056] On the basis of driving the horizontal arm 6 to move left and right by the horizontal movement motor 16, in order to guide the movement of the horizontal arm 6, horizontal guide rails 18 are arranged on the upper and lower sides of the horizontal arm 6, and the horizontal guide rails 18 are rectangular long rods. At the same time, four sets of wheel sets 19 are arranged in a rectangular shape on the front of the guide seat 5. The two sets of wheel sets 19 corresponding to the left and right slide left and right along a horizontal guide rail 18, such as Figure 8 and Fig. 9 The structure and principle of wheel set two 19 are similar to wheel set one 15.

[0057] In this embodiment, each set of wheel groups 2 19 includes a transverse guide roller 191 and a transverse limit roller 192, the rotation directions of the transverse guide roller 191 and the transverse limit roller 192 are perpendicular to each other, and the transverse guide roller 191 and the transverse limit roller 192 slide left and right along the two adjacent side surfaces of the transverse guide rail 18. The transverse guide rollers 191 of the four sets of wheel groups 2 19 cooperate with each other to prevent the cross arm 6 from deviating up and down, and the transverse limit rollers 192 of the four sets of wheel groups 2 19 cooperate with each other to prevent the cross arm 6 from separating from the guide seat 5. Therefore, under the action of the four sets of wheel groups 2 19, it is possible to ensure that the cross arm 6 moves left and right along the guide seat 5 stably and reliably.

[0058] The welding machine head 2 is rotatably arranged at one end of the cross arm 6. On the basis that the cross arm 6 can move up, down, left, and right, it can drive the welding machine head 2 to move up, down, left, and right, that is, the welding operation machine 1 can drive the welding machine head 2 to move in the cross direction. The welding machine head 2 is rotatably mounted on the cross arm 6, so that the orientation of the welding machine head 2 is adjustable, and the angle between the welding machine head 2 and the cross arm 6 is changeable. The welding machine head 2 and the cross arm 6 can be arranged in a straight line from left to right. After rotating the welding machine head 2, the welding machine head 2 and the cross arm 6 are arranged in an "L" shape, and then the welding machine head 2 is arranged horizontally and perpendicular to the cross arm 6.

[0059] A control panel 20 is also provided at one end of the cross arm 6 for controlling the operation of the welding machine head 2. Fig.10 The welding machine head 2 includes a rotating frame 21, a welding wire reel 22, a wire feeding device 23, a cross support frame 24, a conductive sleeve 25, a conductive rod 26 and a conductive nozzle 27. Fig.11 and Fig.12 When the welding machine head 2 is installed with the cross arm 6, a fixing seat 28 with an ear plate is provided at one end of the cross arm 6, and a rotating frame 21 is rotatably provided on the fixing seat 28. A hinge bolt 29 is provided between the fixing seat 28 and the rotating frame 21. The rotating frame 21 rotates with the hinge bolt 29 as the rotation center. By tightening or loosening the hinge bolt 29, the rotating frame 21 can be locked or unlocked, so that the rotating frame 21 can be fixed and rotatable.

[0060] A welding wire reel 22 with welding wire is arranged above the rotating frame 21, and a wire feeding device 23 is arranged cross-slidingly at one end of the rotating frame 21, that is, the wire feeding device 23 can slide up and down and forward and backward relative to the rotating frame 21. Specifically, the welding machine head 2 also includes a vertical electric slide 30 and a horizontal electric slide 31, and a vertical electric slide 30 is arranged at one end of the rotating frame 21, and a horizontal electric slide 31 is arranged for the vertical electric slide 30 to be lifted up and down, that is, the vertical electric slide 30 can drive the horizontal electric slide 31 to move up and down, and a wire feeding device 23 is arranged on the horizontal electric slide 31 to slide forward and backward, and the horizontal electric slide 31 can drive the wire feeding device 23 to move forward and backward, and the forward and backward movement means that the wire feeding device 23 is away from or close to the rotating frame 21.

[0061] The wire feeding device 23 is a prior art, which can automatically feed the welding wire on the wire reel 22. A horizontal support frame 24 is provided at one end of the wire feeding device 23, and the horizontal support frame 24 is arranged horizontally. The horizontal support frame 24 has a certain length, and the size of the horizontal support frame 24 gradually increases from one end to the other end. The farther away from the wire feeding device 23, the thinner the horizontal support frame 24 is. A conductive sleeve 25 is provided in the horizontal support frame 24, and the conductive sleeve 25 is arranged horizontally in the horizontal support frame 24. The length of the conductive sleeve 25 is not less than 1700mm, in order to avoid the parts on the surface of the welding matrix, complete the depth of the welding machine head 2, and avoid the parts on the surface of the welding matrix from interfering with the movement of the welding machine head 2.

[0062] A conductive rod 26 is vertically arranged downward at the end of the cross brace 24, and the conductive rod 26 is located at one end of the cross brace 24 away from the wire feeding device 23. When the conductive rod 26 is installed, a mounting clamp 32 is arranged below the end of the cross brace 24, and the upper end of the conductive rod 26 and the mounting clamp 32 are movably connected, so as to facilitate the installation and adjustment of the direction of the conductive rod 26. Specifically, the mounting clamp 32 is a two-petal structure, and the mounting clamp 32 is composed of two plates, and the upper end of the conductive rod 26 is clamped by the two plates. The two plates are connected by multiple bolts to fix the conductive rod 26. When the bolts are loosened, the conductive rod 26 is in a movable state.

[0063] The length of the conductive rod 26 is not more than 300 mm, in order to avoid the conductive rod 26 from touching the parts on the surface of the welding matrix when it is raised and to meet the depth between the parts on the surface of the welding matrix. The lower end of the conductive rod 26 is tilted and bent, and the arc transition at the bending point is smooth. In this way, the rotation direction of the conductive rod 26 can be adjusted by installing the clamping plate 32, so that the bending direction of the conductive rod 26 can be changed, ensuring that the lower end of the conductive rod 26 is close to the side wall of the groove after bending, and the welding wire is fed into the groove with a narrow gap, so as to better perform the welding operation. A flat conductive nozzle 27 is rotatably provided at the lower end of the conductive rod 26, where the conductive nozzle 27 is threadedly connected to the lower end of the conductive rod 26, so that the rotation of the conductive nozzle 27 is realized.

[0064] The lower end of the conductive nozzle 27 is in the shape of an inverted truncated cone, and the lower end of the conductive nozzle 27 has a small diameter. At the same time, a diameter reducing groove 33 is provided on the side wall of the conductive nozzle 27. The diameter reducing groove 33 is equivalent to providing a plane groove on the circumferential surface of the conductive nozzle 27, the purpose of which is to reduce the diameter of the conductive nozzle 27 and enable the conductive nozzle 27 to better extend into the narrow gap groove, such as Fig.13 and Fig.14 The welding wire on the welding wire reel 22 passes through the wire feeding device 23 and sequentially passes through the conductive sleeve 25, the conductive rod 26 and the conductive nozzle 27 before being extended out. Under the action of the wire feeding device 23, the welding wire on the welding wire reel 22 can be fed into the conductive sleeve 25, and the welding wire moves along the conductive sleeve 25, the conductive rod 26 and the conductive nozzle 27, and finally extends out into the groove through the conductive nozzle 27.

[0065] A flux conveying and recycling integrated machine 34 is provided at the other end of the cross arm 6. Flux is a kind of granular material that is indispensable in submerged arc welding. During the welding operation, a certain amount of flux needs to be conveyed into the groove, and the flux can also be recycled. The flux conveying and recycling integrated machine 34 here can facilitate the conveying and recycling of flux during the welding process.

[0066] The flux delivery and recovery integrated machine 34 is connected to a flux delivery pipe 35 and a flux recovery pipe 36. The flux delivery pipe 35 is composed of a plurality of hard pipes and soft pipes connected to each other. The flux recovery pipe 36 has the same structure as the flux delivery pipe 35. The flux delivery pipe 35 and the flux recovery pipe 36 are arranged along the cross arm 6 and then bent and extended to the position of the welding machine head 2.

[0067] One end of the flux delivery pipe 35 is connected to a flat flux funnel 37, the outlet of the flux funnel 37 faces the conductive nozzle 27, the thickness of the flux funnel 37 matches the diameter of the conductive rod 26, and the flux funnel 37 is flat and can fit the narrow gap groove. The granular flux in the flux funnel 37 can flow to the conductive nozzle 27 and spread the flux all over the groove. One end of the flux recovery pipe 36 is connected to a suction nozzle, which is not shown in the figure. The suction nozzle adopts a flat air nozzle. The flux funnel 37, the conductive rod 26 and the suction nozzle are arranged in a straight line. The flux funnel 37 outputs granular flux, and the granular flux after application is negatively adsorbed by the suction nozzle and returned to the flux delivery and recovery integrated machine 34 along the flux recovery pipe 36.

[0068] The principle of the utility model is as follows: the matrix is ​​fixed on the welding positioner, and the posture of the matrix is ​​changed by the welding positioner. The welding operation machine 1 is controlled to drive the welding machine head 2 to shift over a large range. Here, the welding operation machine 1 also includes a welding power supply 38 and a welding electrical cabinet 39. The welding power supply 38 and the welding electrical cabinet 39 are arranged on both sides of the bottom of the column 4. These are the control part of the welding operation machine 1 and the power supply part of the welding machine head 2. The displacement of the welding machine head 2 includes up and down movement and left and right movement, thereby performing a large range of movement, which is convenient for the welding machine head 2 to quickly move to the matrix welding position.

[0069] After the welding machine head 2 moves to the designated welding position, the operation control panel 20 controls the welding machine head 2, and fine-tunes the welding machine head 2 by moving in the cross direction, thereby driving the flux funnel 37, the conductive rod 26 and the suction nozzle to accurately move to the welding position. The conductive nozzle 27 can be inserted into the groove with a large depth and narrow gap for welding, and the flux funnel 37 can also accurately put flux into the groove with a narrow gap.

[0070] The conductive rod 26 and the conductive nozzle 27 of the utility model are connected and combined to form a welding gun. The welding gun can be flexibly moved to any large-depth narrow-gap groove for multi-layer and multi-pass welding through the welding operation machine 1 and the welding machine head 2. At the same time, a laser displacement sensor 40 is set at the end of the cross support frame 24 to accurately track the movement of the welding gun and automatically perform welding operations, which can replace manual welding, liberate labor, and avoid the situation of uneven welding quality.

[0071] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. The deep submerged arc ultra-thick plate welding system cooperates with the welding positioner to realize the submerged arc welding of the matrix, which is characterized by: It comprises a welding operation machine (1) and a welding machine head (2), wherein the welding operation machine (1) is cross-slidably provided with the welding machine head (2); The welding machine head (2) is arranged horizontally and perpendicularly to the welding operation machine (1), and the welding machine head (2) comprises a rotating frame (21), a welding wire reel (22), a wire feeding device (23), a cross support frame (24), a conductive sleeve (25), a conductive rod (26) and a conductive nozzle (27). The welding wire reel (22) with welding wire is arranged above the rotating frame (21), and the wire feeding device (23) is arranged cross-slidingly at one end of the rotating frame (21); A cross support frame (24) is arranged at one end of the wire feeding device (23), the conductive sleeve (25) is arranged in the cross support frame (24), the conductive rod (26) is arranged vertically downward at the end of the cross support frame (24), the lower end of the conductive rod (26) is inclined and bent and rotatably provided with a flat conductive nozzle (27), and the welding wire on the welding wire reel (22) passes through the wire feeding device (23) and sequentially passes through the conductive sleeve (25), the conductive rod (26) and the conductive nozzle (27) before being extended out.

2. The deep submerged arc ultra-thick plate welding system according to claim 1 is characterized in that: The welding operation machine (1) comprises a traveling trolley (3), a column (4), a guide seat (5), a cross arm (6), a welding power source (38) and a welding electrical cabinet (39); The column (4) is rotatably arranged above the walking trolley (3), the column (4) is arranged vertically, the column (4) is provided with the guide seat (5) for lifting up and down, the guide seat (5) is provided with the cross arm (6) for sliding left and right, the cross arm (6) and the column (4) are arranged in a cross shape, and the welding power source (38) and the welding electrical cabinet (39) are provided on both sides of the bottom of the column (4).

3. The deep submerged arc ultra-thick plate welding system according to claim 2 is characterized in that: The guide seat (5) is arranged on one side of the column (4), and a ladder (13) with a protective cage is arranged on the other side of the column (4), and the ladder (13) extends upward from the bottom of the column (4) to the top of the column (4).

4. The deep submerged arc ultra-thick plate welding system according to claim 2 is characterized in that: The column (4) is hollow inside, a counterweight (8) is provided inside the column (4) for sliding up and down, an operating table (10) with a guardrail (9) is provided on the top of the column (4), and a longitudinal movement motor (11) is provided on the operating table (10); The longitudinal movement motor (11) is engaged with two traction chains (12), one end of each traction chain (12) extends into the interior of the column (4) and is connected to the counterweight (8), and the other end of the traction chain (12) extends to the exterior of the column (4) and is connected to the guide seat (5).

5. The deep submerged arc ultra-thick plate welding system according to claim 4 is characterized in that: Vertical guide rails (14) are arranged on the left and right sides of the upright column (4), and four groups of wheel sets (15) are arranged on the back of the guide seat (5). The four groups of wheel sets (15) are arranged in a rectangular shape, and two groups of wheel sets (15) corresponding to each other slide up and down along a vertical guide rail (14). Each group of wheel sets (15) includes a vertical guide roller and a vertical limit roller (152), and the vertical guide roller and the vertical limit roller (152) slide up and down along two adjacent side surfaces of the vertical guide rail (14).

6. The deep submerged arc ultra-thick plate welding system according to claim 2 is characterized in that: Transverse motors (16) are arranged on both sides of the guide seat (5), the transverse motor (16) and the cross arm (6) are driven by racks and pinions, and the cross arm (6) is arranged transversely; The cross arm (6) is provided with a transverse guide rail (18) on both upper and lower sides, and the guide seat (5) is provided with four sets of wheel sets (19) on the front side. The four sets of wheel sets (19) are arranged in a rectangular shape, and two sets of wheel sets (19) corresponding to each other on the left and right slide left and right along a cross guide rail (18). Each set of wheel sets (19) includes a transverse guide roller (191) and a transverse limit roller (192), and the transverse guide roller (191) and the transverse limit roller (192) slide left and right along two adjacent side surfaces of the cross guide rail (18).

7. The deep submerged arc ultra-thick plate welding system according to claim 2 is characterized in that: The welding machine head (2) is rotatably arranged at one end of the cross arm (6), and the welding machine head (2) further comprises a vertical electric slide (30) and a horizontal electric slide (31). The vertical electric slide (30) is arranged at one end of the rotating frame (21), and the horizontal electric slide (31) is arranged to lift the vertical electric slide (30) up and down, and the wire feeding device (23) is arranged on the horizontal electric slide (31) to slide forward and backward.

8. The deep submerged arc ultra-thick plate welding system according to claim 7 is characterized in that: The conductive sleeve (25) is horizontally arranged in the transverse support frame (24), the length of the conductive sleeve (25) is not less than 1700 mm, a mounting clamping plate (32) is arranged below the end of the transverse support frame (24), the upper end of the conductive rod (26) is movably connected to the mounting clamping plate (32), and the length of the conductive rod (26) is not more than 300 mm; The conductive nozzle (27) is threadedly connected to the lower end of the conductive rod (26); the lower end of the conductive nozzle (27) is in the shape of an inverted truncated cone; a diameter reducing groove (33) is provided on the side wall of the conductive nozzle (27) to reduce the diameter of the conductive nozzle (27).

9. The deep submerged arc ultra-thick plate welding system according to claim 2 is characterized in that: A flux conveying and recycling integrated machine (34) is provided at the other end of the cross arm (6); the flux conveying and recycling integrated machine (34) is connected to a flux conveying pipe (35) and a flux recycling pipe (36); the flux conveying pipe (35) and the flux recycling pipe (36) are both arranged along the cross arm (6) and then bent and extended to the position of the welding machine head (2); One end of the flux delivery pipe (35) is connected to a flat flux funnel (37), the outlet of the flux funnel (37) faces the conductive nozzle (27), and one end of the flux recovery pipe (36) is connected to a suction nozzle. The flux funnel (37), the conductive rod (26) and the suction nozzle are arranged in sequence in a straight line, and the thickness of the flux funnel (37) matches the diameter of the conductive rod (26).

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