Welding device for pipe frame machining and welding method thereof

Abstract

The invention relates to the technical field of welding, and discloses a welding device for pipe frame machining and a welding method thereof.The welding device comprises a workbench, a bottom plate is fixedly mounted at the top of the workbench, two mounting vertical plates are further fixedly mounted at the top of the bottom plate, and two supporting rollers capable of supporting a pipeline supporting arm are mounted on the outer walls of the two mounting vertical plates correspondingly. The pipeline support base is fixed to the center of the top of the bottom plate, the two pipeline supporting arms are placed at the corresponding positions and abut against the supporting rollers, if the supporting arms and the base deviate in the initial stage, the positioning rollers and the first connecting plate can rotate to trigger the correction assembly, and the correction assembly resets the supporting arms and gives an alarm; the supporting arm can be effectively prevented from deviating in the welding process, the stability of the welding process is guaranteed, welding seams are evenly distributed through correction, the overall strength of the welded structure is improved, breakage caused by local stress concentration is avoided, meanwhile, an alarm is given out to remind workers to pay attention to welding seam filling, and the welding quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to a welding device for pipe rack processing and a welding method thereof. Background Art

[0002] Pipe supports are widely used in industry and construction, mainly used to support and fix pipeline systems to ensure their stability and safety. Welding plays a vital role in the production and installation of pipe supports. Through welding, the various components of the support can be firmly connected to provide sufficient bearing capacity and anti-deformation ability. The welding quality directly affects the overall strength and service life of the support, ensuring that the pipeline will not be displaced or damaged during operation, thereby ensuring the normal operation and safety of the system.

[0003] However, some of the pipe supports are formed by welding two arc-shaped pipe support arms on a rectangular support base. Before welding, the arc-shaped pipe support arms are generally manually placed by staff on the arc-shaped grooves on the support base. This may cause the arc-shaped support arms and the grooves on the base to offset, causing the original support for the pipe to change from surface contact to line contact, thereby reducing the support effect and increasing safety hazards during use.

[0004] Therefore, it is particularly important to prevent the arc support arm and the base plate from deflecting before and during welding. Summary of the invention

[0005] The object of the present invention is to provide a welding device for pipe rack processing and a welding method thereof, so as to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, in a first aspect, the present invention provides the following technical solutions: a welding device for pipe rack processing, comprising a workbench, a bottom plate is fixedly installed on the top of the workbench, two mounting vertical plates are also fixedly installed on the top of the bottom plate, two support rollers capable of supporting a pipe support arm are respectively installed on the outer walls of the two mounting vertical plates, two mounting brackets are also fixedly installed on the top of the bottom plate, a rotating shaft capable of vertical sliding adjustment is commonly installed between the two mounting brackets, two rotatable first connecting plates are installed on the outer wall of the rotating shaft, positioning rollers are rotatably installed on the outer walls of the two first connecting plates, and the two positioning rollers can apply pressure to the top of the corresponding pipe support arm;

[0007] Also included is a correction component, which can correct the pipeline support arm when the first connecting plate rotates;

[0008] It also includes a welding assembly, which can weld the arc weld between the pipeline support base and the pipeline support arm.

[0009] Preferably, the correction assembly comprises two mounting rings fixedly mounted on the outer wall of the rotating shaft, the outer walls of the two mounting rings are fixedly mounted with a fixing frame, the inner walls of the two fixing frames are rotatably mounted with a third connecting plate, the two first connecting plates are rotatably connected to the corresponding third connecting plates respectively, the outer walls on both sides of the fixing frame are slidably connected with a multi-stage telescopic plate, the outer walls on both sides of the fixing frame are fixedly mounted with a multi-stage telescopic cylinder, the telescopic part of the multi-stage telescopic cylinder is fixedly connected with the multi-stage telescopic plate, the outer walls of the first connecting plate are fixedly mounted with a limit plate on both sides, and the width of the second connecting plate is consistent with that of the fixing frame;

[0010] It also includes a trigger component, which can detect a small rotation of the first connecting plate and drive the multi-stage telescopic cylinder to extend the telescopic part.

[0011] Preferably, the trigger assembly comprises a connecting frame slidably mounted on the inner wall of the fixed frame, the connecting frame is connected to the top of the fixed frame by a spring, and the connecting frame is divided into two parts: the upper half is solid and slidably mounted on the inner wall of the fixed frame, and the lower half is set in a frame shape, the central axis of the third connecting plate is suspended in the fixed frame, and a supporting thin plate is fixedly mounted at the bottom center of the upper half of the connecting frame, and the supporting thin plate can be against or separated from the top of the third connecting plate;

[0012] The trigger assembly also includes two trigger switches fixedly installed on both sides of the bottom of the upper half of the connecting frame, and the two trigger switches are respectively located on both sides of the supporting thin plate, and the two trigger switches are electrically connected to the multi-stage telescopic cylinder.

[0013] Preferably, the bottoms of the two mounting brackets are fixedly connected to the mounting frames, the inner walls of the two mounting frames are slidably mounted with mounting blocks, the rotating shaft is rotatably mounted between the two mounting blocks, the tops of the two mounting brackets are fixedly mounted with second telescopic cylinders, the output shafts of the two second telescopic cylinders pass through the tops of the mounting brackets and are fixedly connected to the tops of the corresponding mounting blocks, and the outer wall of one of the mounting blocks is fixedly mounted with a second motor that can drive the rotating shaft to rotate.

[0014] Preferably, the welding assembly includes an arc groove penetrating through the outer wall of the mounting vertical plate, two support parts are slidably mounted on the inner wall of the arc groove, a welding gun head is fixedly connected to the outer wall of the support part, and the welding gun head is connected to an external wire feeding mechanism.

[0015] Preferably, the portion where the supporting thin plate contacts the third connecting plate is configured to be arc-shaped.

[0016] Preferably, the support roller is rotatably mounted on the outer wall of the support portion, and the support portion is located at the bottom in an initial state.

[0017] Preferably, the outer wall of the mounting vertical plate is also equipped with a clamp capable of positioning the base of the pipe support.

[0018] Preferably, the supporting roller abuts against the limiting plate in the initial stage.

[0019] In a second aspect, the present invention provides a method for using a welding device for pipe rack processing, comprising the following steps:

[0020] In the first step, the staff fixes the pipe support base to the top center of the base plate, places the two pipe support arms against the corresponding mounting vertical plates, and places them on top of the support rollers and the pipe support base;

[0021] In the second step, the rotating shaft is driven downward by the external driving structure, thereby driving the positioning roller, the fixing frame and the first connecting plate to move downward together, until both positioning rollers are in contact with the corresponding pipe support arms. Under the action of the spring, the positioning roller will apply pressure to the top of the corresponding pipe support arm to ensure that the pipe support arm can be stably fixed on the top of the pipe support base;

[0022] In the third step, if the pipeline support arm and the pipeline support base are not offset in the initial stage, the force direction of the first connecting plate and the positioning roller is always vertically upward, and the first connecting plate will not rotate. If the pipeline support arm is offset in the initial stage, the first connecting plate will be driven to rotate through the positioning roller;

[0023] In the fourth step, when the first connecting plate rotates, the second connecting plate and the third connecting plate will be driven to rotate, so that the supporting thin plate is separated from the third connecting plate, and then the limiting effect of the third connecting plate on the connecting frame is released. Under the elastic force of the spring, the connecting frame moves downward, so that the third connecting plate extends into the space formed by the inner wall of the connecting frame and the supporting thin plate, and the third connecting plate touches the trigger switch therein;

[0024] The fifth step, when the third connecting plate touches the trigger switch, the multi-stage telescopic cylinder is driven to start working through the electrical connection, and the telescopic part of the multi-stage telescopic cylinder will drive the multi-stage telescopic plate to move downward, so that the multi-stage telescopic plate contacts and abuts against the limit plate. When the telescopic part of the multi-stage telescopic cylinder continues to extend, it will drive the third connecting plate to reset, and will convert the contact between the positioning roller and the pipe support arm into a rigid contact, thereby completing the correction of the offset pipe support arm.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] In the present invention, the staff first fixes the base of the pipe support at the top center of the base plate, places the two pipe support arms at corresponding positions and abuts against the support rollers, and installs the vertical plate, support rollers and base to initially limit the support arm. The external drive structure drives the rotating shaft to move downward so that the positioning roller abuts against the top of the support arm. If the support arm and the base are offset in the initial stage, the positioning roller and the first connecting plate will rotate to trigger the correction component, which will reset the support arm and sound an alarm, which can effectively prevent the support arm from shifting during welding and ensure a stable welding process. Through correction, the welds are evenly distributed, which improves the overall strength of the structure after welding and avoids fractures due to local force concentration. The alarm can remind the staff to pay attention to the weld filling and ensure the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view of the present invention;

[0028] Figure 2 A perspective view of the present invention;

[0029] Figure 3 It is a right side cross-sectional view of the present invention after removing the bottom plate;

[0030] Figure 4 It is a cross-sectional schematic diagram of the third connecting plate and the connecting frame structure in the present invention from a first viewing angle;

[0031] Figure 5 It is a cross-sectional schematic diagram of the third connecting plate and the connecting frame structure in the present invention from a second viewing angle;

[0032] Figure 6 It is a schematic diagram of the second state of the third connecting plate structure in the present invention;

[0033] Figure 7 It is a schematic diagram of the multi-stage telescopic plate and the limiting plate in the present invention when they are in contact with each other;

[0034] Figure 8 This is a schematic diagram of the pipeline support base and the pipeline support arm after welding in the present invention.

[0035] In the figure: 1. workbench; 2. bottom plate; 3. mounting bracket; 4. rotating shaft; 5. mounting ring; 6. pipe bracket base; 7. pipe support arm; 8. mounting vertical plate; 9. supporting part; 10. welding gun head; 11. positioning roller; 12. first connecting plate; 13. second connecting plate; 14. third connecting plate; 15. connecting frame; 16. multi-stage telescopic plate; 17. multi-stage telescopic cylinder; 18. second telescopic cylinder; 19. fixing frame; 20. spring; 21. supporting thin plate; 22. trigger switch; 23. limit plate; 24. mounting frame; 25. arc groove; 26. supporting roller; 27. mounting block. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 8 The present invention provides a technical solution: a welding device for pipe rack processing, comprising a workbench 1, a bottom plate 2 is fixedly installed on the top of the workbench 1, two mounting vertical plates 8 are also fixedly installed on the top of the bottom plate 2, two supporting rollers 26 capable of supporting the pipe support arm 7 are respectively installed on the outer walls of the two mounting vertical plates 8, two mounting brackets 3 are also fixedly installed on the top of the bottom plate 2, a rotating shaft 4 capable of vertical sliding adjustment is commonly installed between the two mounting brackets 3, two rotatable first connecting plates 12 are installed on the outer wall of the rotating shaft 4, positioning rollers 11 are rotatably installed on the outer walls of the two first connecting plates 12, and the two positioning rollers 11 can apply pressure to the top of the corresponding pipe support arm 7;

[0038] It also includes a correction component, which can correct the pipeline support arm 7 when the first connecting plate 12 rotates;

[0039] It also includes a welding assembly, which can weld the arc weld between the pipeline support base 6 and the pipeline support arm 7.

[0040] See also Figure 1 as well as Figure 2 When it is necessary to weld the pipe support, the staff first fixes the pipe support base 6 on the top center of the base plate 2, and then places the two pipe support arms 7 on the top of the pipe support base 6 in the area to be welded, and contacts with the top of the support roller 26. At this time, the two pipe support arms 7 will contact with the outer wall of the corresponding mounting vertical plate 8. The mounting vertical plate 8, the support roller 26 and the pipe support base 6 together complete the initial limiting of the pipe support arm 7, which can prevent the pipe support arm 7 from shifting during the welding process. The rotating shaft 4 is driven downward by the external driving mechanism, thereby driving the first connecting plate 12 and the positioning roller 11 to move downward at the same time until the positioning roller 11 contacts with the top of the pipe support arm 7 to complete the application of pressure on the top of the pipe support arm 7. At this time, the pipe support arm 7 can be stably fixed on the top of the pipe support base 6 through the cooperation of the positioning roller 11, the support roller 26, the mounting vertical plate 8 and the pipe support base 6 to prevent it from shifting during the welding process.

[0041] However, the error in the previous process may cause a certain gap between the pipe support arm 7 and the pipe support base 6, resulting in an offset. Generally, this offset is within the correctable range. During welding, appropriate correction measures are taken to return the pipe support arm 7 and the pipe support base 6 to their original positions, and then fill them with welding wire.

[0042] When the pipe support base 6 and the pipe support arm 7 are offset in the initial stage, the external driving mechanism drives the rotating shaft 4 to move downward, which drives the positioning roller 11 to fit with the pipe support arm 7. Since the pipe support arm 7 and the pipe support base 6 are offset at this time, the positioning roller 11 and the first connecting plate 12 are driven to rotate, and the correction component is triggered at this time. The correction component can reset the offset pipe support arm 7 and can sound an alarm to notify the staff to pay attention to the weld between the pipe support base 6 and the pipe support arm 7 in the subsequent welding process and fill it to make the cooperation between the two more accurate. During the welding process, the welds can be evenly distributed on the corrected joint surface, so that the overall strength of the welded structure is higher. If there is an offset and welding is not corrected, the welds may be concentrated in the local area, and an effective overall force-bearing structure cannot be formed, which is prone to insufficient strength such as fracture during use.

[0043] Further, the correction component includes two mounting rings 5 ​​fixedly mounted on the outer wall of the rotating shaft 4, the outer walls of the two mounting rings 5 ​​are fixedly mounted with a fixing frame 19, the inner walls of the two fixing frames 19 are rotatably mounted with a third connecting plate 14, the two first connecting plates 12 are rotatably connected to the corresponding third connecting plates 14, the outer walls on both sides of the fixing frame 19 are slidably connected with a multi-stage telescopic plate 16, the outer walls on both sides of the fixing frame 19 are fixedly mounted with a multi-stage telescopic cylinder 17, the telescopic part of the multi-stage telescopic cylinder 17 is fixedly connected with the multi-stage telescopic plate 16, the outer walls of the first connecting plate 12 are fixedly mounted with a limit plate 23, and the width of the second connecting plate 13 is consistent with that of the fixing frame 19;

[0044] It also includes a trigger assembly, which can detect a small rotation of the first connecting plate 12 and drive the multi-stage telescopic cylinder 17 to extend its telescopic part.

[0045] See also Figure 4 as well as Figure 7When the staff places the pipe support arm 7 in the above position, the rotating shaft 4 is driven downward by the external structure, thereby driving the mounting ring 5 and the fixing frame 19 to move downward, and then driving the first connecting plate 12 and the positioning roller 11 to move downward. If the pipe support arm 7 and the pipe support base 6 are completely fitted without deviation at this time, the reaction force of the pipe support arm 7 on the positioning roller 11 is always upward in the vertical direction; if the pipe support arm 7 and the pipe support base 6 are offset at this time, the pipe support arm 7 and the positioning roller 11 will be driven to rotate, thereby triggering the multi-stage telescopic cylinder 17 to start working through the trigger component, and the telescopic part of the multi-stage telescopic cylinder 17 will drive the multi-stage telescopic plate 16 to move downward until it contacts the limit plate 23 on the outer wall of the first connecting plate 12 (such as Figure 7 As shown), the first connecting plate 12 that has been rotating is reset, and in this process, the contact between the positioning roller 11 and the pipe support arm 7 is transformed into a rigid contact, because in this process the positioning roller 11 is always in contact with the pipe support arm 7. When the limit plate 23 moves downward to complete the reset of the first connecting plate 12, the positioning roller 11 will drive the pipe support arm 7 to rotate, thereby restoring the pipe support arm 7 to a horizontal level, so as to complete the correction of the pipe support arm 7 and facilitate subsequent welding work.

[0046] Furthermore, the trigger assembly includes a connecting frame 15 slidably mounted on the inner wall of the fixed frame 19, the connecting frame 15 is connected to the top of the fixed frame 19 by a spring 20, and the connecting frame 15 is divided into two parts: the upper half is solid and slidably mounted on the inner wall of the fixed frame 19, and the lower half is set in a frame shape, the central axis of the third connecting plate 14 is suspended in the frame shape of the fixed frame 19, and a supporting thin plate 21 is fixedly mounted at the bottom center of the upper half of the connecting frame 15, and the supporting thin plate 21 can be against or separated from the top of the third connecting plate 14;

[0047] The trigger assembly also includes two trigger switches 22 fixedly installed on both sides of the bottom of the upper half of the connecting frame 15, and the two trigger switches 22 are respectively located on both sides of the supporting thin plate 21, and the two trigger switches 22 are electrically connected to the multi-stage telescopic cylinder 17.

[0048] See also Figure 5After the staff completes the placement of the pipe bracket base 6 and the pipe support arm 7, the rotating shaft 4 is driven downward by the external driving mechanism, thereby driving the fixed frame 19 to move downward. In the initial stage, since the bottom of the supporting plate 21 is against the top of the third connecting plate 14, the connecting frame 15 can be limited in the vertical direction, that is, the fixed frame 19 moves downward while driving the connecting frame 15 and the third connecting plate 14 to move downward, thereby driving the second connecting plate 13, the first connecting plate 12 and the positioning roller 11 to move vertically downward at the same time. When the positioning roller 11 contacts the pipe support arm 7, if the pipe support arm 7 does not deviate, the force on the above-mentioned parts is always vertically upward, and the positioning roller 11 and the first connecting plate 12 will not rotate. Under the action of the spring 20, pressure will be applied to the top of the pipe support arm 7, thereby completing the fixing of the pipe support arm 7.

[0049] When the pipe support arm 7 is offset from the pipe support base 6, after the positioning roller 11 contacts the pipe support arm 7, the force of the pipe support arm 7 on the positioning roller 11 is no longer vertically upward, thereby driving the positioning roller 11 and the first connecting plate 12 to rotate, thereby driving the second connecting plate 13 and the third connecting plate 14 to rotate. When the third connecting plate 14 rotates, the force of the supporting thin plate 21 on the third connecting plate 14 will separate in the horizontal direction, thereby causing the supporting thin plate 21 to separate from the third connecting plate 14, so that under the action of the spring 20, This causes the connecting frame 15 to move downward, allowing the third connecting plate 14 to enter one of the two spaces formed by the supporting thin plate 21 and the inner wall of the lower half of the connecting frame 15, and a trigger switch 22 is respectively installed in the two spaces of the connecting frame 15. When the third connecting plate 14 enters any space and triggers the trigger switch 22, the trigger switch 22 is electrically connected to the multi-stage telescopic cylinder 17, so that the telescopic part of the multi-stage telescopic cylinder 17 extends downward, and then the multi-stage telescopic plate 16 is in contact with the limit plate 23 to complete the above-mentioned process of correcting the pipeline support arm 7.

[0050] It is worth mentioning that a signal light electrically connected to the trigger switch 22 can be set on the outer wall. When the pipe support arm 7 is detected to be offset and the trigger switch 22 is triggered, the signal light can be used to observe the direction in which the pipe support arm 7 is offset, and the signal light can remind the staff more prominently so that the staff can fill in the gaps in time during the subsequent welding of the pipe support base 6 and the pipe support arm 7.

[0051] Furthermore, the bottoms of the two mounting brackets 3 are fixedly connected to the mounting frame 24, the inner walls of the two mounting frames 24 are slidably installed with mounting blocks 27, the rotating shaft 4 is rotatably installed between the two mounting blocks 27, and the tops of the two mounting brackets 3 are fixedly installed with second telescopic cylinders 18. The output shafts of the two second telescopic cylinders 18 pass through the tops of the mounting brackets 3 and are fixedly connected to the tops of the corresponding mounting blocks 27, and the outer wall of one of the mounting blocks 27 is fixedly installed with a second motor that can drive the rotating shaft 4 to rotate.

[0052] See also Figure 1 as well as Figure 2 The mounting block 27 is slidably mounted on the inner wall of the mounting frame 24, and the rotating shaft 4 is rotatably mounted between the two mounting frames 24. In the initial stage, the mounting block 27 is driven to move downward by the second telescopic cylinder 18 fixed on the top of the mounting bracket 3, thereby driving the rotating shaft 4 to move downward, so that the positioning roller 11 fits with the pipeline support arm 7, exerts a certain pressure on the top of the pipeline support arm 7, and can detect the degree of fit between the pipeline support arm 7 and the pipeline support base 6, so as to facilitate the subsequent welding process.

[0053] It is worth mentioning that the offset of the pipe support arm 7 may not occur in the entire weld. During the manufacturing or transportation process, the pipe support arm 7 support arm or the pipe support base 6 mounting seat may undergo slight deformation, which may cause local offset during assembly. Therefore, before welding, after completing the vertical direction detection, the motor driven rotating shaft 4 fixed on the outer wall of the mounting block 27 can be rotated to drive the first connecting plate 12 to rotate, and then the positioning roller 11 can be rotated on the upper surface of the pipe support arm 7 to complete the detection of its fit, so as to remind the staff to pay special attention to this point in the subsequent welding process.

[0054] Furthermore, the welding assembly includes an arc groove 25 extending through the outer wall of the mounting vertical plate 8, two support parts 9 are slidably mounted on the inner wall of the arc groove 25, a welding gun head 10 is fixedly connected to the outer wall of the support part 9, and the welding gun head 10 is connected to an external wire feeding mechanism.

[0055] Furthermore, the supporting roller 26 is rotatably mounted on the outer wall of the supporting portion 9, and in the initial state, the supporting portion 9 is located at the bottom.

[0056] See also Figure 2The outer wall of the mounting vertical plate 8 is provided with a penetrating arc groove 25. In the initial stage, the two supporting parts 9 are located at the bottom to cooperate with the positioning roller 11 to fix the positioning roller 11. When the entire detection process is completed, the multi-stage telescopic cylinder 17 is driven to extend the telescopic part, so that the multi-stage telescopic plate 16 and the limit plate 23 are fitted and abutted against each other, so that the positioning roller 11 and the pipeline support arm 7 are in rigid contact, which prevents the switch 22 from being triggered incorrectly due to uneven heat distribution during the welding process, and the rigid contact can ensure more stability during the welding process.

[0057] Furthermore, the portion where the supporting thin plate 21 contacts the third connecting plate 14 is configured to be arc-shaped.

[0058] See also Figure 5 As can be seen from the above, in the initial stage, the limiting of the connecting frame 15 is completed by the contact between the supporting thin plate 21 and the third connecting plate 14. The supporting thin plate 21 is set to an arc shape consistent with the contact part of the third connecting plate 14, so that the two can be more stable when in contact with each other, and the supporting thin plate 21 is set to an arc shape so that it can more sensitively detect the change of the force of the third connecting plate 14 on it, further amplify the influence of the rotation of the positioning roller 11, and make the third connecting plate 14 quickly disengage from the supporting thin plate 21, so as to complete the subsequent correction process.

[0059] Furthermore, a fixture capable of positioning the pipe support base 6 is also installed on the outer wall of the mounting riser 8 .

[0060] Screws are installed on the outer wall of the vertical plate 8. In the initial stage, the staff rotates the two screws on the outer wall of the vertical plate 8 to complete the fixation of the pipe support base 6 to prevent the pipe support base 6 from shifting during the subsequent welding process.

[0061] Furthermore, in the initial stage, the supporting roller 26 abuts against the limiting plate 23 .

[0062] Due to human factors or insufficient tool precision, the pipe support arm 7 may not be properly aligned in certain locations. Therefore, in the initial stage, the support roller 26 can be abutted against the limit plate 23 to make a rigid contact between the positioning roller 11 and the pipe support arm 7, so that the pipe support arm 7 and the pipe support base 6 can be initially aligned. Subsequently, the support roller 26 can be disengaged from the limit plate 23 by the multi-stage telescopic cylinder 17 to complete the above-mentioned detection process.

[0063] A method for using a welding device for pipe rack processing comprises the following steps:

[0064] In the first step, the staff fixes the pipe support base 6 at the top center of the bottom plate 2, and places the two pipe support arms 7 against the corresponding mounting risers 8, and places them on the top of the support rollers 26 and the pipe support base 6;

[0065] In the second step, the rotating shaft 4 is driven downward by the external driving structure, thereby driving the positioning roller 11, the fixing frame 19 and the first connecting plate 12 to move downward together, until both positioning rollers 11 are in contact with the corresponding pipe support arms 7. Under the action of the spring 20, the positioning roller 11 applies pressure to the top of the corresponding pipe support arm 7 to ensure that the pipe support arm 7 can be stably fixed on the top of the pipe support base 6;

[0066] In the third step, if the pipeline support arm 7 and the pipeline support base 6 are not offset in the initial stage, the force direction of the first connecting plate 12 and the positioning roller 11 is always vertically upward, and the first connecting plate 12 will not rotate. If the pipeline support arm 7 is offset in the initial stage, the first connecting plate 12 will be driven to rotate through the positioning roller 11;

[0067] In the fourth step, when the first connecting plate 12 rotates, the second connecting plate 13 and the third connecting plate 14 are driven to rotate, so that the supporting thin plate 21 is separated from the third connecting plate 14, and then the limiting effect of the third connecting plate 14 on the connecting frame 15 is released. Under the elastic force of the spring 20, the connecting frame 15 moves downward, so that the third connecting plate 14 extends into the space formed by the inner wall of the connecting frame 15 and the supporting thin plate 21, and the third connecting plate 14 touches the trigger switch 22 therein;

[0068] In the fifth step, when the third connecting plate 14 touches the trigger switch 22, the multi-stage telescopic cylinder 17 is driven to start working through the electrical connection, and the telescopic part of the multi-stage telescopic cylinder 17 will drive the multi-stage telescopic plate 16 to move downward, so that the multi-stage telescopic plate 16 is in contact with the limit plate 23. When the telescopic part of the multi-stage telescopic cylinder 17 continues to extend, it will drive the third connecting plate 14 to reset, and will convert the contact between the positioning roller 11 and the pipe support arm 7 into a rigid contact, thereby completing the correction of the offset pipe support arm 7.

[0069] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for pipe rack processing, comprising a workbench (1), characterized in that: A base plate (2) is fixedly mounted on the top of the workbench (1), and two mounting vertical plates (8) are also fixedly mounted on the top of the base plate (2), and two support rollers (26) capable of supporting the pipeline support arm (7) are respectively mounted on the outer walls of the two mounting vertical plates (8), and two mounting brackets (3) are also fixedly mounted on the top of the base plate (2), and a rotating shaft (4) capable of vertical sliding adjustment is commonly mounted between the two mounting brackets (3), and two rotatable first connecting plates (12) are mounted on the outer walls of the two first connecting plates (12), and positioning rollers (11) are rotatably mounted on the outer walls of the two first connecting plates (12), and the two positioning rollers (11) can apply pressure to the top of the corresponding pipeline support arm (7); It also includes a correction component, which can correct the pipeline support arm (7) when the first connecting plate (12) rotates; It also comprises a welding assembly, which can weld the arc-shaped weld between the pipeline support base (6) and the pipeline support arm (7).

2. The welding device for pipe rack processing according to claim 1, characterized in that: The correction component comprises two mounting rings (5) fixedly mounted on the outer wall of the rotating shaft (4); the outer walls of the two mounting rings (5) are fixedly mounted with a fixing frame (19); the inner walls of the two fixing frames (19) are rotatably mounted with a third connecting plate (14); the two first connecting plates (12) are rotatably connected to the corresponding third connecting plates (14); the outer walls on both sides of the fixing frame (19) are slidably connected with a multi-stage telescopic plate (16); the outer walls on both sides of the fixing frame (19) are fixedly mounted with a multi-stage telescopic cylinder (17); the telescopic portion of the multi-stage telescopic cylinder (17) is fixedly connected to the multi-stage telescopic plate (16); the outer walls of the first connecting plate (12) are fixedly mounted with a limiting plate (23); and the width of the second connecting plate (13) is consistent with that of the fixing frame (19); It also comprises a trigger component, which can detect a small rotation of the first connecting plate (12) and drive the multi-stage telescopic cylinder (17) to extend the telescopic part.

3. The welding device for pipe rack processing according to claim 2, characterized in that: The trigger assembly comprises a connecting frame (15) slidably mounted on the inner wall of the fixed frame (19); the connecting frame (15) is connected to the inner top of the fixed frame (19) via a spring (20); the connecting frame (15) is divided into two parts: the upper half is solid and slidably mounted on the inner wall of the fixed frame (19); the lower half is set in a frame shape; the central axis of the third connecting plate (14) is suspended in the frame shape of the fixed frame (19); a supporting thin plate (21) is fixedly mounted at the bottom center of the upper half of the connecting frame (15); the supporting thin plate (21) can abut against or detach from the top of the third connecting plate (14); The trigger assembly further comprises two trigger switches (22) fixedly mounted on both sides of the bottom of the upper half of the connection frame (15), and the two trigger switches (22) are respectively located on both sides of the supporting thin plate (21), and the two trigger switches (22) are both electrically connected to the multi-stage telescopic cylinder (17).

4. The welding device for pipe rack processing according to claim 3, characterized in that: The bottoms of the two mounting brackets (3) are fixedly connected to the mounting frames (24); the inner walls of the two mounting frames (24) are slidably mounted with mounting blocks (27); the rotating shaft (4) is rotatably mounted between the two mounting blocks (27); the tops of the two mounting brackets (3) are fixedly mounted with second telescopic cylinders (18); the output shafts of the two second telescopic cylinders (18) penetrate the tops of the mounting brackets (3) and are fixedly connected to the tops of the corresponding mounting blocks (27); and the outer wall of one of the mounting blocks (27) is fixedly mounted with a second motor capable of driving the rotating shaft (4) to rotate.

5. The welding device for pipe rack processing according to claim 1, characterized in that: The welding assembly comprises an arc-shaped groove (25) penetrating the outer wall of the mounting vertical plate (8), two supporting parts (9) are slidably mounted on the inner wall of the arc-shaped groove (25), a welding gun head (10) is fixedly connected to the outer wall of the supporting part (9), and the welding gun head (10) is connected to an external wire feeding mechanism.

6. The welding device for pipe rack processing according to claim 4, characterized in that: The portion where the supporting thin plate (21) contacts the third connecting plate (14) is designed to be arc-shaped.

7. The welding device for pipe rack processing according to claim 5, characterized in that: The supporting roller (26) is rotatably mounted on the outer wall of the supporting portion (9), and in an initial state, the supporting portion (9) is located at the bottom.

8. The welding device for pipe rack processing according to any one of claims 1 to 7, characterized in that: The outer wall of the mounting vertical plate (8) is also provided with a clamp capable of positioning the pipe support base (6).

9. The welding device for pipe rack processing according to any one of claims 1 to 7, characterized in that: In the initial stage, the supporting roller (26) abuts against the limiting plate (23).

10. A method for using the welding device for pipe rack processing according to claim 4, characterized in that: The following steps are involved: In the first step, the staff fixes the pipe support base (6) at the top center of the base plate (2), respectively places the two pipe support arms (7) against the corresponding mounting vertical plates (8), and places them on the top of the support rollers (26) and the pipe support base (6); In the second step, the rotating shaft (4) is driven to move downward by the external driving structure, thereby driving the positioning roller (11), the fixing frame (19) and the first connecting plate (12) to move downward together, until the two positioning rollers (11) are in contact with the corresponding pipe support arms (7). Under the action of the spring (20), the positioning roller (11) will apply pressure to the top of the corresponding pipe support arm (7), ensuring that the pipe support arm (7) can be stably fixed on the top of the pipe support base (6); In the third step, if the pipe support arm (7) and the pipe support base (6) are not offset in the initial stage, the force direction of the first connecting plate (12) and the positioning roller (11) is always vertically upward, and the first connecting plate (12) will not rotate. If the pipe support arm (7) is offset in the initial stage, the first connecting plate (12) will be driven to rotate through the positioning roller (11); In the fourth step, when the first connecting plate (12) rotates, the second connecting plate (13) and the third connecting plate (14) are driven to rotate, so that the supporting thin plate (21) is separated from the third connecting plate (14), thereby releasing the limiting effect of the third connecting plate (14) on the connecting frame (15), and under the elastic force of the spring (20), the connecting frame (15) moves downward, so that the third connecting plate (14) extends into the space formed by the inner wall of the connecting frame (15) and the supporting thin plate (21), and the third connecting plate (14) touches the trigger switch (22) therein; In the fifth step, when the third connecting plate (14) touches the trigger switch (22), the multi-stage telescopic cylinder (17) is driven to start working through the electrical connection, and the telescopic portion of the multi-stage telescopic cylinder (17) drives the multi-stage telescopic plate (16) to move downward, so that the multi-stage telescopic plate (16) and the limit plate (23) are in contact with each other. When the telescopic portion of the multi-stage telescopic cylinder (17) continues to extend, it drives the third connecting plate (14) to reset, and the contact between the positioning roller (11) and the pipeline support arm (7) is converted into a rigid contact, thereby completing the correction of the offset pipeline support arm (7).

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