Plasma welding device for processing oil tank of generator set

Abstract

The application discloses a kind of plasma welding devices for generator set oil tank processing, specifically relates to oil tank processing welding field, including fixed frame, the movable frame is equipped on the fixed frame, the fixed frame is also equipped with centering component, the clamping component for clamping is equipped on the centering component, the welding component for welding is equipped on the movable frame, the centering component includes the bottom plate fixed on the fixed frame.The plasma welding device for generator set oil tank processing described in the application is matched by the auxiliary plate inclined surface of support plate, centering block and clamping component in centering component, in the process that clamping plate moves to workpiece, auxiliary plate inclined surface pushes centering block to be synchronized to the middle and draw together, realize the automatic centering of oil tank plate material, and the sealing tube and piston rod system of hydraulic drive can provide stable clamping force, and cooperate with down pressure plate and thickness detection component, realize the automatic measurement of plate material thickness after clamping, provide basis for subsequent welding parameter adjustment.

Description

Technical Field

[0001] This invention relates to the field of fuel tank processing and welding technology, and in particular to a plasma welding device for processing generator set fuel tanks. Background Technology

[0002] Generator set fuel tanks are typically welded from multiple metal plates. The quality of the welding directly affects the sealing performance and structural strength of the fuel tank. The plasma welding equipment for generator set fuel tank processing is a specialized heat processing equipment developed specifically for the metal fuel tanks (carbon steel or stainless steel plates) of diesel or gasoline generator sets. It uses a compressed plasma arc as the core heat source and achieves high-sealing welding of longitudinal seams, circumferential seams, flanges, and reinforcing ribs through automated or semi-automated control.

[0003] In real life, traditional welding stations mostly use manual or semi-automatic clamping methods. After the tank plate is placed, it is difficult to quickly and automatically center it, which can easily cause positional deviation, resulting in weld offset or uneven welding. In addition, the heat generated during the welding process can easily cause the plate to warp or bulge locally. The height of conventional welding guns is fixed and cannot be adjusted in real time according to the undulations of the workpiece surface, causing fluctuations in the weld distance and affecting the uniformity of the weld penetration and width. Summary of the Invention

[0004] The main objective of this invention is to provide a plasma welding device for processing generator set oil tanks, which can effectively solve the problems of easy positional deviation and weld distance fluctuation.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A plasma welding device for processing generator set oil tanks includes a fixed frame, a movable frame on the fixed frame, a centering component on the fixed frame, a clamping component on the centering component, and a welding component on the movable frame. The centering component includes a base plate fixed to a mounting frame, an insulation mesh fixed to the upper end of the base plate, a heat-resistant plate fixed to the insulation mesh, two support plates elastically connected to the base plate, two centering blocks elastically connected to the upper ends of the two support plates, a movable roller rotatably connected to the lower end of the support plates, and a receiver embedded in one of the support plates.

[0006] Preferably, the two support plates tend to move away from the insulation net, and the two center blocks located on the same side tend to move away from each other.

[0007] Preferably, the clamping assembly includes a clamping plate, a telescopic member is provided inside the clamping plate, auxiliary plates are symmetrically provided on the clamping plate, a lower pressure plate is fixed to the telescopic end of the telescopic member, a transmitter adapted to the receiver is embedded at the lower end of the lower pressure plate, and a driving assembly is provided on the side of the clamping plate near the bottom plate.

[0008] Preferably, one end of both the auxiliary plate and the support plate is provided with an inclined surface, and the inclined surfaces of the auxiliary plate and the support plate are compatible.

[0009] Preferably, the drive assembly includes a sealing tube embedded in the base plate, a connecting ring fixedly connected to the outer surface of the sealing tube, a piston rod slidably connected inside the sealing tube, a hollow tube fixed to one end of the piston rod near the connecting ring, and an L-shaped tube fixedly connected to the connecting ring.

[0010] Preferably, the piston rod is fixedly connected to the clamping plate, and the L-shaped tube is connected to the telescopic component by a flexible hose.

[0011] Preferably, the welding assembly includes a drive frame, a support housing is fixed on the drive frame, an adjustment assembly is provided inside the support housing, a welding gun is slidably connected to the support housing, two movable plates are slidably connected to the support housing, and a contact roller is rotatably connected between the two movable plates.

[0012] Preferably, the adjustment assembly includes a connecting plate slidably connected to the support housing, an elastic element fixedly connected between the connecting plate and the top wall of the support housing, an air extraction pipe rotatably connected inside the support housing, and an L-shaped connecting rod rotatably connected to the inner wall of the support housing between the connecting plate and the air extraction pipe, with both ends of the L-shaped connecting rod rotatably connected to the connecting plate and the air extraction pipe, respectively.

[0013] Preferably, an air pump is fixed on the support housing, and the air pump is connected to the air extraction pipe by a flexible hose.

[0014] Preferably, the welding gun includes a sealed housing, inside which two convex mirrors are symmetrically fixed, and a permanent magnet ring is slidably connected between the two convex mirrors. The permanent magnet ring is elastically connected to the inner wall of the sealed housing, and an electromagnetic ring that repels the permanent magnet ring is provided above the permanent magnet ring. A concave mirror is fixed inside the permanent magnet ring.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention utilizes the cooperation of the support plate and centering block in the centering component with the inclined surface of the auxiliary plate in the clamping component. During the movement of the clamping plate toward the workpiece, the inclined surface of the auxiliary plate pushes the centering block to move toward the center simultaneously, thereby achieving automatic centering of the oil tank plate. Furthermore, the hydraulically driven sealing pipe and piston rod system can provide stable clamping force. In conjunction with the lower pressure plate and thickness detection component, the thickness of the plate is automatically measured after clamping, providing a basis for subsequent welding parameter adjustments.

[0016] 2. The present invention provides a contact roller connected to the movable plate. The roller is always in contact with the surface of the workpiece. When encountering welding heat deformation or protrusions caused by original unevenness, the movable plate can slide upward and compress the elastic element, driving the welding gun to rise synchronously. This keeps the distance between the end of the welding gun and the surface of the workpiece constant, avoids weld defects caused by welding distance fluctuations, and significantly improves weld uniformity.

[0017] 3. This invention employs an optical structure combining a double convex mirror and a movable concave mirror. The concave mirror is fixed on a permanent magnet ring, and the permanent magnet ring and the upper electromagnetic ring are magnetically repelled. By controlling the magnitude of the electromagnetic ring current, the displacement of the permanent magnet ring and the concave mirror can be precisely adjusted, thereby changing the focusing depth of the plasma beam. This achieves energy density optimization for different plate thicknesses, resulting in stable melting depth and melting width. Furthermore, the adjustment response is fast and there is no mechanical wear. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the back side of the present invention; Figure 3 This is a schematic diagram of the interior of the centering component of the present invention; Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A in the diagram; Figure 5 For the present invention Figure 3 Enlarged schematic diagram of the structure at point B in the diagram; Figure 6 This is a schematic diagram of the internal structure of the clamping assembly of the present invention; Figure 7 This is a schematic diagram of the internal structure of the drive component of the present invention; Figure 8 This is a schematic diagram of the internal structure of the welding assembly of the present invention; Figure 9 This is a schematic diagram of the position structure of the adjustment component of the present invention; Figure 10 This is a schematic diagram of the internal structure of the welding gun of the present invention.

[0019] In the diagram: 1. Fixed frame; 2. Movable frame; 3. Centering component; 4. Clamping component; 5. Welding component; 31. Base plate; 32. Insulation mesh; 33. Heat-resistant plate; 34. Support plate; 35. Centering block; 36. Movable roller; 37. Receiver; 41. Clamping plate; 42. Telescopic component; 43. Auxiliary plate; 44. Lower pressure plate; 45. Drive component; 451. Sealing pipe; 452. Connecting ring; 453. 554. Piston rod; 56. Hollow tube; 57. L-shaped tube; 58. Drive frame; 59. Support housing; 50. Adjustment assembly; 51. Welding gun; 52. Movable plate; 53. Contact roller; 54. Connecting plate; 55. Elastic element; 56. Evacuation pipe; 57. L-shaped connecting rod; 58. Sealing housing; 59. Convex mirror; 50. Permanent magnet ring; 51. Electromagnetic ring; 52. Concave mirror. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] Example 1, as Figures 1 to 10 As shown, a plasma welding device for processing generator set oil tanks includes a fixed frame 1, a movable frame 2 on the fixed frame 1, a centering component 3 on the fixed frame 1, a clamping component 4 on the centering component 3, and a welding component 5 on the movable frame 2.

[0022] like Figure 3 , Figure 4 and Figure 5 As shown, it should be further explained that the centering component 3 includes a base plate 31 fixed to the fixing frame 1. A heat insulation net 32 ​​is fixed to the upper end of the base plate 31, and a heat-resistant plate 33 is fixed to the heat insulation net 32. Two support plates 34 are elastically connected to the base plate 31, and two centering blocks 35 are elastically connected to the upper ends of the two support plates 34. A movable roller 36 is rotatably connected to the lower end of the support plates 34. A receiver 37 is embedded in one of the support plates 34. The two support plates 34 have a tendency to move away from the heat insulation net 32, and the two centering blocks 35 located on the same side have a tendency to move away from each other.

[0023] like Figure 6 As shown, it should be further explained that the clamping assembly 4 includes a clamping plate 41, a telescopic member 42 is provided inside the clamping plate 41, and auxiliary plates 43 are symmetrically provided on the clamping plate 41. A lower pressure plate 44 is fixed to the telescopic end of the telescopic member 42. A transmitter adapted to the receiver 37 is embedded at the lower end of the lower pressure plate 44. A driving assembly 45 is provided on the side of the clamping plate 41 near the base plate 31. An inclined surface is opened at one end of both the auxiliary plate 43 and the support plate 34, and the inclined surface of the auxiliary plate 43 is adapted to the inclined surface of the support plate 34.

[0024] like Figure 7 As shown, it should be further explained that the drive assembly 45 includes a sealing tube 451 embedded in the base plate 31. A connecting ring 452 is fixedly connected to the outer surface of the sealing tube 451. A piston rod 453 is slidably connected inside the sealing tube 451. A hollow tube 454 is fixed to one end of the piston rod 453 near the connecting ring 452. An L-shaped tube 455 is fixedly connected to the connecting ring 452. The piston rod 453 is fixedly connected to the clamping plate 41. The L-shaped tube 455 is connected to the telescopic component 42 by a flexible hose. Specifically, the tank assembly to be welded is placed on the support plate 34. First, it needs to be clamped. It should be noted that a liquid pump is installed between the two sealing pipes 451. When clamping the tank assembly, i.e., the metal plate, is required, the liquid pump is activated to extract hydraulic oil from the sealing pipes 451. During the flow of the hydraulic oil, the two piston rods 453 move closer together. The piston rods 453 then move the two clamping plates 41 closer to the metal plate. During this movement, the two auxiliary plates 43 come into contact with the centering block 35. As the clamping plates 41 continue to move, the two centering blocks 35 move closer together. When the two centering blocks 35 contact the metal plate placed on the support plate 34, the two... As the centering block 35 moves, the tilted metal plate is pushed to its upright position until the outer surfaces of the two clamping plates 41 contact the metal plate. The two clamping plates 41 then clamp the metal plate. The hollow tube 454 inside the sealing tube 451 moves simultaneously with the piston rod 453. An electric telescopic rod is provided between the piston rod 453 and the hollow tube 454. At this time, the electric telescopic rod needs to be activated to push the hollow tube 454 away from the piston rod 453 until the sealing tube 451 and the connecting ring 452 are airtightly connected. Then, the liquid pump is activated again to draw hydraulic oil from the L-shaped tube 455, causing the telescopic component 42 to contract and drive the lower pressure plate 44 to move downward until the lower pressure plate 44 contacts the metal plate. The thickness of the metal plate can be detected by the transmitter and receiver 37.

[0025] Example 2 further achieves the purpose of welding the fuel tank processing based on Example 1. For further details, please refer to [link / reference]. Figure 8 As shown, the welding assembly 5 includes a drive frame 51, a support housing 52 fixed on the drive frame 51, an adjustment assembly 53 inside the support housing 52, a welding gun 54 slidably connected to the support housing 52, two movable plates 55 slidably connected to the support housing 52, and a contact roller 56 rotatably connected between the two movable plates 55. like Figure 9As shown, it should be further explained that the adjustment component 53 includes a connecting plate 531 slidably connected to the support housing 52, an elastic element 532 is fixedly connected between the connecting plate 531 and the top wall of the support housing 52, an air extraction pipe 533 is rotatably connected inside the support housing 52, an L-shaped connecting rod 534 is provided between the connecting plate 531 and the air extraction pipe 533 and is rotatably connected to the inner wall of the support housing 52, the two ends of the L-shaped connecting rod 534 are respectively rotatably connected to the connecting plate 531 and the air extraction pipe 533, and an air pump is fixed on the support housing 52, and the air pump and the air extraction pipe 533 are connected by a flexible hose. It should be noted that during the welding process, the contact roller 56 remains in contact with the surface of the metal plate. When the movable frame 2 moves, the contact roller 56 rolls along the surface of the metal plate. When it encounters unevenness or protrusions caused by thermal deformation, the movable plate 55 slides upward within the support housing 52, compressing the internal elastic element 532. The welding gun 54 and the connecting plate 531 move upward together with the movable plate 55, maintaining a constant distance between the end of the welding gun 54 and the surface of the oil tank. This contact design avoids fluctuations in the weld distance caused by unevenness or thermal deformation of the oil tank surface, ensuring the uniformity of the weld and the welding assembly. 5 is installed on the movable frame 2. The movable frame 2 and the fixed frame 1 are provided with guide rails and drive mechanism. The movable frame 2 can move in the horizontal direction. Welding work is carried out on the gap of the metal plate by welding gun 54. The connecting plate 531 moves up and down with the movable plate 55, and adjusts the height of welding gun 54 according to the concavity and convexity of the metal plate surface. During this process, the movement of connecting plate 531 will also adjust the angle of air extraction pipe 533 through L-shaped connecting rod 534, so that the air extraction end of air extraction pipe 533 is always kept at a fixed angle with the welding end of welding gun 54, so as to carry out welding work better.

[0026] like Figure 10 As shown, it should be further explained that the welding gun 54 includes a sealing housing 541, two convex mirrors 542 are symmetrically fixed inside the sealing housing 541, a permanent magnet ring 543 is slidably connected between the two convex mirrors 542, the permanent magnet ring 543 is elastically connected to the inner wall of the sealing housing 541, an electromagnetic ring 544 that is magnetically repelled by the permanent magnet ring 543 is provided above the permanent magnet ring 543, and a concave mirror 545 is fixed inside the permanent magnet ring 543; Specifically, a gap is left between the two convex mirrors 542, and a permanent magnet ring 543 is slidably connected within the gap. A spring is installed between the permanent magnet ring 543 and the inner wall of the sealed housing 541, and the spring pushes the permanent magnet ring 543 upward. A concave mirror 545 is fixed inside the permanent magnet ring 543, and the focal point of the concave mirror 545 matches the focal point of the convex mirror 542. An electromagnetic ring 544 is installed above the permanent magnet ring 543 and is fixed to the inner wall of the sealed housing 541. When the electromagnetic ring 544 is energized, it generates a magnetic field, and the direction of the magnetic field is consistent with the inherent direction of the permanent magnet ring 543. The magnetic fields are in opposite directions and repel each other. The repulsive force overcomes the elastic force of the spring and pushes the permanent magnet ring 543 downward. The movement of the permanent magnet ring 543 drives the concave mirror 545 to move, changing the relative position between the concave mirror 545 and the convex mirror 542, thereby adjusting the focusing point of the plasma beam. By controlling the current of the electromagnetic ring 544, the displacement of the permanent magnet ring 543 can be precisely controlled to obtain different focusing depths. This non-contact electromagnetic adjustment mechanism allows the welding energy density to be flexibly varied according to the plate thickness and weld requirements to obtain stable penetration depth and weld width.

[0027] Furthermore, the working principle of this solution is explained in conjunction with the above embodiments: The oil tank assembly to be welded is placed on the support plate 34 of the centering assembly 3. The hydraulic system of the drive assembly 45 is started, and the pump installed between the two sealing pipes 451 starts to work, drawing hydraulic oil from inside the sealing pipes 451. The hydraulic oil flows inside the sealing pipes 451, and the pressure difference generated pushes the piston rod 453 to extend towards the workpiece. The outer end of the piston rod 453 is fixed to the clamping plate 41. The clamping plate 41 moves towards the center of the workpiece together with the piston rod 453. The inner side of the clamping plate 41 is symmetrically provided with auxiliary plates 43. The auxiliary plate 43 has a bevel machined at the end facing the centering block 35, and the end of the centering block 35 facing the auxiliary plate 43 is also machined with... The inclined surfaces are matched with each other. When the clamping plate 41 moves toward the workpiece, the inclined surface of the auxiliary plate 43 first contacts the inclined surface of the centering block 35. Since the auxiliary plate 43 is fixed on the clamping plate 41 and cannot move backward, the centering block 35 is elastically connected to the upper end of the support plate 34 and has the tendency to move outward. The two inclined surfaces slide relative to each other, generating a component force perpendicular to the contact surface. This component force pushes the centering block 35 to overcome the elastic tension and move toward the center of the workpiece. The two centering blocks 35 move toward the center from the left and right sides at the same time. After contacting the side of the oil tank assembly, they push the workpiece to the left and right symmetrical center position. This mechanical linkage of inclined surfaces realizes the automatic centering of the workpiece and eliminates the positional deviation when placed manually. As the clamping plate 41 continues to move inward, the auxiliary plate 43 completely passes over the centering block 35. At this point, the two centering blocks 35 have already centered the workpiece. The vertical inner surface of the clamping plate 41 gradually approaches the side of the workpiece until the inner surfaces of both clamping plates 41 simultaneously contact the workpiece. At this point, the clamping plate 41 can no longer move inward, the piston rod 453 is subjected to a reaction force, the hydraulic system pressure increases, and the pump continues to maintain the pressure, so that the clamping plate 41 firmly clamps the workpiece, completing the clamping and fixing. During this process, the movable roller 36 on the support plate 34 allows the workpiece to roll slightly during centering, reducing frictional resistance. After clamping is completed, the thickness detection mechanism starts working. The lower pressure plate 44 is fixed to the telescopic end of the telescopic component 42, which is installed inside the clamping plate 41. A transmitter is embedded in the lower end of the lower pressure plate 44, and a receiver 37 is embedded inside the support plate 34. The positions of the transmitter and receiver 37 are vertically aligned. After the clamping plate 41 clamps the workpiece, the hollow tube 454 located inside the sealing tube 451 begins to move. The hollow tube 454 is fixed to the end of the piston rod 453 near the connecting ring 452. An electric telescopic rod is provided between the hollow tube 454 and the piston rod 453. The control system issues a command, and the electric telescopic rod pushes the hollow tube 454 to extend away from the piston rod 453 until the end of the hollow tube 454 is connected to the connecting ring 452. The inner wall of ring 452 forms an airtight connection. At this time, the hydraulic oil channel in sealing pipe 451 is connected to the hydraulic circuit inside connecting ring 452, L-shaped pipe 455 and telescopic component 42. L-shaped pipe 455 is fixedly connected to connecting ring 452. The other end of L-shaped pipe 455 is connected to telescopic component 42 through a hose. The pump starts again and draws hydraulic oil from L-shaped pipe 455, causing telescopic component 42 to contract. The contraction of telescopic component 42 drives the lower pressure plate 44 to move vertically downward. After the lower pressure plate 44 contacts the upper surface of the workpiece, the transmitter sends a signal. The receiver 37 receives the signal after passing through the thickness of the workpiece. The control system calculates the thickness value of the workpiece based on this. This thickness information is stored for subsequent adjustment of welding parameters. Welding assembly 5 is mounted on movable frame 2. A guide rail and ball screw drive mechanism are provided between movable frame 2 and fixed frame 1. Movable frame 2 can reciprocate horizontally. Welding assembly 5 includes drive frame 51, support housing 52, adjustment assembly 53, welding gun 54, movable plate 55, and contact roller 56. Drive frame 51 is fixed to movable frame 2, and support housing 52 is fixed to drive frame 51. Adjustment assembly 53 and welding gun 54 are located inside support housing 52. Adjustment assembly 53 includes a sliding connection to the support... Inside the housing 52, there is a connecting plate 531. An elastic element 532 is fixedly connected between the connecting plate 531 and the top wall of the supporting housing 52. The elastic element 532 always applies a downward thrust to the connecting plate 531. An air extraction pipe 533 is rotatably connected inside the supporting housing 52. An L-shaped connecting rod 534 is provided between the air extraction pipe 533 and the connecting plate 531. The two ends of the L-shaped connecting rod 534 are rotatably connected to the connecting plate 531 and the air extraction pipe 533, respectively. The air extraction pipe 533 is connected to an air pump fixed on the supporting housing 52 through a hose. The welding gun 54 includes a sealing housing 541, a convex mirror 542, a permanent magnet ring 543, an electromagnetic ring 544, and a concave mirror 545. The sealing housing 541 is fixed to the lower end of the connecting plate 531. Two convex mirrors 542 are symmetrically fixed inside the sealing housing 541. A gap is left between the two convex mirrors 542. The permanent magnet ring 543 is slidably connected in the gap. A spring is provided between the permanent magnet ring 543 and the inner wall of the sealing housing 541. The spring pushes the permanent magnet ring 543 upward. The concave mirror 545 is fixed inside the permanent magnet ring 543. The electromagnetic ring 544 is fixed to the inner wall of the sealing housing 541 and is located above the permanent magnet ring 543. The control system calculates the required plasma beam focusing depth based on the previously detected workpiece thickness and applies a current of a specific intensity to the electromagnetic ring 544. After the electromagnetic ring 544 is energized, it generates a magnetic field. The direction of the magnetic field is opposite to the inherent magnetic field direction of the permanent magnet ring 543. The two repel each other, and the repulsive force overcomes the elastic force of the spring, pushing the permanent magnet ring 543 to move downward. The permanent magnet ring 543 drives the concave mirror 545 to move downward together, changing the relative distance between the concave mirror 545 and the convex mirror 542. This change in distance directly changes the focusing point position of the plasma beam. By precisely controlling the current of the electromagnetic ring 544, the displacement of the permanent magnet ring 543 can be steplessly adjusted to obtain any desired focusing depth. Therefore, plates of different thicknesses can obtain stable penetration depth and penetration width, avoiding welding defects. The movable frame 2 begins to move horizontally, driving the welding assembly 5 forward along the weld direction. The contact roller 56 is rotatably connected between two movable plates 55. The two movable plates 55 are slidably connected to the lower end of the support housing 52. An elastic element 532 is provided between the upper end of the movable plate 55 and the inner top wall of the support housing 52. The contact roller 56 extends from the lower end of the welding gun 54 and always fits against the upper surface of the workpiece. When the surface of the workpiece is completely flat, the contact roller 56 maintains a fixed height, and the distance between the welding gun 54 and the workpiece is constant. When the workpiece surface has original unevenness before welding, or when local bulges are caused by thermal deformation during welding, the bulges push the contact roller 56 upward. The contact roller 56 transmits the upward displacement to the movable plate 55. The movable plate 55 slides upward in the groove of the support housing 52, compressing the elastic element 532 above it. The upper end face of the movable plate 55 directly contacts the lower end face of the connecting plate 531, forcing the connecting plate 531 to move upward. When the connecting plate 531 moves upward, it stretches the elastic element 532, increasing the tension of the elastic element 532. The sealing housing 541 of the welding gun 54 is fixed on the connecting plate 531, and the entire welding gun 54 rises synchronously with the connecting plate 531. As the connecting plate 531 moves upward, one end of the L-shaped connecting rod 534 moves upward. The other end of the L-shaped connecting rod 534 is rotatably connected to the exhaust pipe 533. The length of the L-shaped connecting rod 534 is fixed. The upward movement of the connecting plate 531 pulls the exhaust pipe 533 to rotate around its rotation axis by an angle. The exhaust end of the exhaust pipe 533 faces the welding end of the welding gun 54. Due to the design of the connecting rod size, no matter what height the connecting plate 531 is at, a fixed angle is maintained between the exhaust end of the exhaust pipe 533 and the welding end of the welding gun 54. The exhaust pump works continuously, sucking away the fumes and spatter generated during welding through the exhaust pipe 533, improving the visibility and air quality of the welding area.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A plasma welding apparatus for processing generator set fuel tanks, comprising a mounting frame (1), characterized in that: The fixed frame (1) is provided with a movable frame (2), the fixed frame (1) is also provided with a centering component (3), the centering component (3) is provided with a clamping component (4) for clamping, and the movable frame (2) is provided with a welding component (5) for welding. The centering component (3) includes a base plate (31) fixed on a fixing frame (1), a heat insulation net (32) fixed at the upper end of the base plate (31), a heat-resistant plate (33) fixed on the heat insulation net (32), two support plates (34) elastically connected on the base plate (31), two centering blocks (35) elastically connected at the upper ends of the two support plates (34), a movable roller (36) rotatably connected at the lower end of the support plate (34), and a receiver (37) embedded in one of the support plates (34).

2. The plasma welding apparatus for processing generator set oil tanks according to claim 1, characterized in that: The two support plates (34) tend to move away from the insulation net (32), and the two center blocks (35) located on the same side tend to move away from each other.

3. The plasma welding apparatus for processing generator set fuel tanks according to claim 1, characterized in that: The clamping assembly (4) includes a clamping plate (41), a telescopic member (42) is provided inside the clamping plate (41), auxiliary plates (43) are symmetrically provided on the clamping plate (41), a lower pressure plate (44) is fixed to the telescopic end of the telescopic member (42), a transmitter adapted to the receiver (37) is embedded at the lower end of the lower pressure plate (44), and a driving assembly (45) is provided on the side of the clamping plate (41) near the base plate (31).

4. The plasma welding apparatus for processing generator set fuel tanks according to claim 3, characterized in that: Both the auxiliary plate (43) and the support plate (34) have inclined surfaces at one end, and the inclined surfaces of the auxiliary plate (43) and the support plate (34) are compatible.

5. The plasma welding apparatus for processing generator set fuel tanks according to claim 3, characterized in that: The drive assembly (45) includes a sealing tube (451) embedded in the base plate (31), a connecting ring (452) is fixedly connected to the outer surface of the sealing tube (451), a piston rod (453) is slidably connected inside the sealing tube (451), a hollow tube (454) is fixed to one end of the piston rod (453) near the connecting ring (452), and an L-shaped tube (455) is fixedly connected to the connecting ring (452).

6. The plasma welding apparatus for processing generator set oil tanks according to claim 5, characterized in that: The piston rod (453) is fixedly connected to the clamping plate (41), and the L-shaped tube (455) is connected to the telescopic component (42) by a flexible hose.

7. The plasma welding apparatus for processing generator set fuel tanks according to claim 1, characterized in that: The welding assembly (5) includes a drive frame (51), a support housing (52) is fixed on the drive frame (51), an adjustment assembly (53) is provided inside the support housing (52), a welding gun (54) is slidably connected on the support housing (52), and two movable plates (55) are slidably connected on the support housing (52), with a contact roller (56) rotatably connected between the two movable plates (55).

8. The plasma welding apparatus for processing generator set fuel tanks according to claim 7, characterized in that: The adjustment assembly (53) includes a connecting plate (531) slidably connected to the support housing (52). An elastic element (532) is fixedly connected between the connecting plate (531) and the top wall of the support housing (52). An air extraction pipe (533) is rotatably connected inside the support housing (52). An L-shaped connecting rod (534) is provided between the connecting plate (531) and the air extraction pipe (533) and is rotatably connected to the inner wall of the support housing (52). The two ends of the L-shaped connecting rod (534) are rotatably connected to the connecting plate (531) and the air extraction pipe (533) respectively.

9. The plasma welding apparatus for processing generator set oil tanks according to claim 8, characterized in that: An air pump is fixed on the support housing (52), and the air pump is connected to the air extraction pipe (533) by a flexible hose.

10. The plasma welding apparatus for processing generator set oil tanks according to claim 7, characterized in that: The welding gun (54) includes a sealed housing (541), inside which two convex mirrors (542) are symmetrically fixed. A permanent magnet ring (543) is slidably connected between the two convex mirrors (542). The permanent magnet ring (543) is elastically connected to the inner wall of the sealed housing (541). Above the permanent magnet ring (543) is an electromagnetic ring (544) that is magnetically repelled by the permanent magnet ring (543). A concave mirror (545) is fixed inside the permanent magnet ring (543).

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