Welding tool for oil tank shell of farming machine

Abstract

The invention discloses a welding tool for an oil tank shell of a farming machine. The welding tool comprises a welding machine, a base, a welding platform and a replacement mechanism, and the base is installed on the bottom wall of the welding machine; the welding platform is mounted on the base; the replacing mechanism comprises an upper mounting base, an upper positioning base, a first spring, an anti-sliding block, a second spring, a lower mounting base, a lower positioning base, a third spring and a fixing assembly. Therefore, the welding heads of different specifications can be quickly replaced through the replacing mechanism, when the welding heads need to be replaced, the lower mounting seat and the welding heads can be taken down only by pressing the fixing balls to be separated from the fixing grooves, and after the welding heads are replaced with new welding heads, the fixing balls can be clamped into the fixing grooves again under the action of the springs, so that replacement is completed.

Description

Technical Field

[0001] This application relates to the technical field of agricultural machinery, and more particularly to a welding fixture for the outer shell of an oil tank in agricultural machinery. Background Technology

[0002] Agricultural machinery refers to mechanical equipment that is driven by a power unit or pulled by human or animal power and is directly used in the entire process of agricultural production, including field operations, crop planting, field management, and primary agricultural product harvesting. Among them, the oil tank is a core component of the power system of agricultural machinery, used to store and supply engine lubricating oil.

[0003] The outer shell of the oil tank is mostly made of thin steel plate by stamping. It has the characteristics of irregular structure, obvious curved surface features and various flange dimensions. In addition, due to the wide variety of agricultural machinery models, the specifications of the oil tank shells matched with different models vary greatly. Therefore, welding fixtures are required to meet the welding requirements of oil tank shells of different specifications.

[0004] When faced with oil tank shells of various specifications, the existing welding fixtures have fixed welding head angles, and the replacement and angle adjustment of welding heads are cumbersome. They are highly specialized but have very poor versatility, and cannot quickly adapt to the welding alignment requirements of oil tank shells with different shapes and sizes, resulting in a significant decrease in welding efficiency.

[0005] Meanwhile, to meet the requirements of lightweight design and installation compatibility, the outer shell of agricultural machinery fuel tanks is typically made of thin-walled sheet metal through stamping, resulting in poor overall rigidity and insufficient structural strength. During welding operations, when conventional rigid clamping devices are used for positioning and clamping, the clamping force is concentrated on a localized area of ​​the shell, lacking effective buffering and adaptive adjustment capabilities. This easily damages the thin-walled shell: on the one hand, it creates obvious indentations on the shell surface, affecting the product's appearance quality; on the other hand, excessive local clamping force can lead to problems such as localized dents and overall clamping deformation, thereby compromising the dimensional accuracy of the fuel tank shell and affecting the accuracy of subsequent welding alignment. Summary of the Invention

[0006] This application aims to at least partially address one of the technical problems in the related art.

[0007] One objective of this application is to provide a welding fixture for the outer shell of an oil tank of agricultural machinery. It can quickly replace welding heads of different specifications through a replacement mechanism. When the welding head needs to be replaced, simply press the fixing ball to disengage it from the fixing groove, and the lower mounting base and welding head can be removed. After replacing the new welding head, the fixing ball will re-clamp into the fixing groove under the action of the spring, thus completing the replacement.

[0008] Meanwhile, by setting up relevant monitoring and adjustment components, the accuracy of welding and the overall stability of the tooling can be further improved, reducing welding problems caused by various complex factors and improving welding quality.

[0009] To achieve the above objectives, a first aspect of this application provides a welding fixture for the outer shell of an oil tank in agricultural machinery, comprising a welding machine, a base, a welding platform, and a replacement mechanism. The base is mounted on the bottom wall of the welding machine; the welding platform is mounted on the base; the replacement mechanism includes an upper mounting seat, an upper positioning seat, a first spring, an anti-slip block, a second spring, a lower mounting seat, a lower positioning seat, a third spring, and a fixing assembly. The upper mounting seat is mounted at one end of the welding head of the welding machine; the upper positioning seat is mounted inside the upper mounting seat; the first spring is sleeved on the outside of the upper positioning seat, and both ends of the first spring are connected to the inner wall of the upper mounting seat and the outer wall of the upper positioning seat, respectively; the anti-slip block is sleeved on the outer wall of the upper mounting seat; the second spring is sleeved on the outer wall of the upper mounting seat; the lower mounting seat is mounted inside the upper mounting seat; the lower positioning seat is mounted inside the lower mounting seat; the third spring is sleeved on the outer wall of the lower positioning seat, and both ends of the third spring are connected to the inner wall of the lower mounting seat and the outer wall of the lower positioning seat, respectively; the fixing assembly is provided.

[0010] In addition, the welding fixture for the outer shell of an oil tank of agricultural machinery proposed above in this application may also have the following additional technical features:

[0011] In one embodiment of this application, the fixing component includes a fixing ball, wherein the inner wall of the upper mounting base has a fixing hole; the fixing ball is placed inside the fixing hole; the outer wall of the lower mounting base has a fixing groove, and the position of the fixing groove corresponds one-to-one with the position of the fixing ball.

[0012] In one embodiment of this application, the welding platform is provided with two sets of stabilizing mechanisms. Each set of stabilizing mechanisms includes an electric slide, a cylinder, an adjusting component, and a clamping component. The electric slide is mounted on the welding platform; the cylinder is mounted inside the moving block of the electric slide; the adjusting component is located at one output end of the cylinder; and the clamping component is located outside the adjusting component.

[0013] In one embodiment of this application, the adjusting assembly includes a fixed housing, a gear, a handle, a rotating rod, a push rod, and a protective assembly, wherein the fixed housing is connected to the output end of the cylinder; the gear is rotatably connected to the inner wall of the fixed housing; the handle is mounted on the outer wall of the fixed housing; the rotating rod is meshed with the gear, and the other end of the handle is connected to the rotating rod; the push rod is meshed with the other end of the gear; and the protective assembly is disposed on the outer wall of the fixed housing.

[0014] In one embodiment of this application, the protective component includes a protective shell and a bolt, wherein the protective shell is detachably mounted on the outer wall of the fixed shell; the bolt passes through the outer wall of the protective shell and is threadedly connected to the fixed shell.

[0015] In one embodiment of this application, the clamping assembly includes a clamping block, a buffer assembly, a flexible fixing post, and a floating assembly, wherein the clamping block is connected to the other end of the push rod; the buffer assembly is disposed inside the clamping block; the flexible fixing post is installed on the outer wall of the clamping block; multiple sets of floating assemblies are provided, and the floating assemblies are disposed inside the clamping block.

[0016] In one embodiment of this application, the buffer assembly includes a limiting post, a fourth spring, a limiting block, and a fifth spring, wherein the limiting post is fixed to the inner wall of the clamping block; one end of the fourth spring is fixed to the inner wall of the limiting post; the limiting block is slidably connected to the inner wall of the limiting post, and the limiting block is connected to the other end of the fourth spring; the fifth spring is sleeved on the outside of the limiting post, and both ends of the fifth spring are respectively connected to the inner wall of the clamping block and one end of the flexible fixing post.

[0017] In one embodiment of this application, each set of floating components includes a sixth spring, a floating block, and a connecting rod, wherein one end of the sixth spring is fixed to the inner wall of the clamping block; multiple floating blocks are provided, and each floating block is connected to the other end of the sixth spring; the connecting rod passes through multiple floating blocks and is connected to the outermost floating blocks at both ends.

[0018] In one embodiment of this application, a calibration assembly is provided on the outer wall of the welding machine and the outside of the base. The calibration assembly includes an infrared aiming device and a control panel. The infrared aiming device is installed at one end of the welding head of the welding machine. The control panel is installed on the outside of the base, and the infrared aiming device and the control panel are electrically connected.

[0019] A welding fixture for the outer shell of an oil tank in agricultural machinery, according to an embodiment of this application, has the following beneficial effects:

[0020] The mechanism allows for quick replacement of welding heads of different specifications to meet the welding needs of various oil tank housings. When a welding head needs to be replaced, the fixing ball is disengaged from the fixing groove of the lower mounting base through appropriate operation, allowing the lower mounting base and the connected welding head to be quickly removed. After replacement, the fixing ball is embedded in the fixing groove to ensure a stable installation of the new welding head, which not only improves replacement efficiency but also ensures the stability of the replaced welding head.

[0021] Meanwhile, the electric slide can move linearly along the welding platform, flexibly adjusting the position of the cylinder according to the size of the oil tank shell and the welding position. The cylinder provides power to the adjusting and clamping components, pushing them closer to the oil tank shell. When the handle in the adjusting component is turned, it drives the rotating rod to rotate. The rotating rod meshes with the gear, causing the gear to rotate, which in turn drives the push rod to move, thereby adjusting the position of the clamping component. The clamping block moves closer to the oil tank shell under the action of the push rod. The limiting post of the buffer component is fixed to the inner wall of the clamping block. The fourth spring and the limiting block can provide a buffering effect when the flexible fixing post contacts the shell. The fifth spring is sleeved on the outside of the limiting post to further enhance the buffering effect and avoid damage to the thin-walled shell due to excessive clamping force.

[0022] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0024] Figure 1 This is a schematic diagram of the overall structure of a welding fixture for an oil tank housing of agricultural machinery according to an embodiment of this application;

[0025] Figure 2 This is a schematic diagram of a replacement mechanism for a welding fixture used for the outer casing of an oil tank of agricultural machinery, according to an embodiment of this application.

[0026] Figure 3 This is a schematic diagram of a clamping assembly structure for a welding fixture for an oil tank housing of agricultural machinery, according to an embodiment of this application.

[0027] Figure 4 This is a schematic diagram of a stabilizing mechanism for a welding fixture used for the outer casing of an oil tank of agricultural machinery, according to an embodiment of this application.

[0028] Figure 5 This application provides a welding fixture for the housing of an oil tank on agricultural machinery, according to one embodiment of the present application. Figure 2 Enlarged structural diagram at point A in the middle;

[0029] Figure 6 This application provides a welding fixture for the housing of an oil tank on agricultural machinery, according to one embodiment of the present application. Figure 3 Enlarged structural diagram at point B;

[0030] Figure 7 This application provides a welding fixture for the housing of an oil tank on agricultural machinery, according to one embodiment of the present application. Figure 4 Enlarged structural diagram at point C;

[0031] Figure 8 This is a schematic diagram of a welding machine used in conjunction with an infrared sight for welding a welding fixture for the outer shell of an agricultural machinery oil tank, according to one embodiment of this application.

[0032] As shown in the figure: 1. Welding machine; 2. Base; 3. Welding platform; 4. Changing mechanism; 41. Upper mounting base; 42. Upper positioning base; 43. First spring; 44. Anti-slip block; 45. Second spring; 46. Lower mounting base; 47. Lower positioning base; 48. Third spring; 49. Fixing assembly; 491. Fixing hole; 492. Fixing ball; 493. Fixing groove; 5. Stabilizing mechanism; 51. Electric slide table; 52. Cylinder; 6. Adjusting assembly; 61. Fixing shell; 62. 63. Gear; 64. Handle; 65. Rotating rod; 66. Push rod; 67. Protective assembly; 68. Protective shell; 69. Bolt; 70. Clamping assembly; 71. Clamping block; 72. Buffer assembly; 721. Limiting post; 722. Fourth spring; 723. Limiting block; 724. Fifth spring; 73. Flexible fixing post; 80. Floating assembly; 81. Sixth spring; 82. Floating block; 83. Linkage rod; 91. Calibration assembly; 92. Infrared sight; 93. Control panel. Detailed Implementation

[0033] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0034] The following description, in conjunction with the accompanying drawings, describes a welding fixture for the outer casing of an oil tank in agricultural machinery, according to an embodiment of this application.

[0035] This application provides a welding fixture for the outer shell of an oil tank in agricultural machinery, which can be applied to agricultural machinery and welding equipment.

[0036] like Figure 1-8 As shown in the figure, a welding fixture for the outer shell of an oil tank of agricultural machinery according to an embodiment of this application may include a welding machine 1, a base 2, a welding platform 3 and a replacement mechanism 4.

[0037] The base 2 is installed on the bottom wall of the welding machine 1, the welding platform 3 is installed on the base 2, and the replacement mechanism 4 includes an upper mounting seat 41, an upper positioning seat 42, a first spring 43, an anti-slip block 44, a second spring 45, a lower mounting seat 46, a lower positioning seat 47, a third spring 48, and a fixing component 49.

[0038] The upper mounting base 41 is installed at one end of the welding head of the welding machine 1, the upper positioning base 42 is installed inside the upper mounting base 41, the first spring 43 is sleeved on the outside of the upper positioning base 42, and the two ends of the first spring 43 are respectively connected to the inner wall of the upper mounting base 41 and the outer wall of the upper positioning base 42, the anti-slip block 44 is sleeved on the outer wall of the upper mounting base 41, the second spring 45 is sleeved on the outer wall of the upper mounting base 41, the lower mounting base 46 is installed inside the upper mounting base 41, the lower positioning base 47 is installed inside the lower mounting base 46, the third spring 48 is sleeved on the outer wall of the lower positioning base 47, and the two ends of the third spring 48 are respectively connected to the inner wall of the lower mounting base 46 and the outer wall of the lower positioning base 47, and the fixing component 49 is disposed inside the upper mounting base 41.

[0039] like Figure 2 As shown, in one embodiment of this application, the fixing component 49 includes a fixing ball 492.

[0040] The upper mounting base 41 has a fixing hole 491 on its inner wall, and a fixing ball 492 is placed inside the fixing hole 491. The lower mounting base 46 has a fixing groove 493 on its outer wall, and the position of the fixing groove 493 corresponds one-to-one with the position of the fixing ball 492.

[0041] Specifically, when it is necessary to replace the welding head with a different specification, the operator first pushes the anti-sliding block 44 upward, thereby compressing the second spring 45 and preventing the anti-sliding block 44 from blocking the fixing ball 492. Next, the fixing ball 492 is pressed, causing it to disengage from the fixing groove 493 of the lower mounting base 46. At this point, the fixing relationship between the lower mounting base 46 and the upper mounting base 41 is released, allowing the lower mounting base 46 and the welding head attached to it to be removed. After removing the old welding head, the new welding head, along with the lower mounting base 46, is inserted upward into the upper mounting base 41. The operator then releases the anti-sliding block 44, and the second spring 45 resets, pushing the anti-sliding block 44 back to its original position. Simultaneously, the fixing ball 492, under the action of the spring, re-engages into the corresponding fixing groove 493 on the outer wall of the new lower mounting base 46, completing the replacement of the welding head.

[0042] After replacing the welding head with one of the appropriate specifications, insert the new lower mounting base 46 into the upper mounting base 41. Release the upper positioning base 42; the first spring 43 returns to its original deformation, causing the upper positioning base 42 to reset. This allows the fixing ball 492 to re-embed into the fixing groove 493 on the outer wall of the new lower mounting base 46 under the force of the first spring 43, thus securing the new welding head. Simultaneously, release the anti-slip block 44; the second spring 45 returns to its original deformation, pushing the anti-slip block 44 back to its original position, preventing the fixing ball 492 from accidentally dislodging during welding and ensuring the stability of the welding head installation.

[0043] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, in one embodiment of this application, the welding platform 3 is provided with two sets of stabilizing mechanisms 5, each set of stabilizing mechanisms 5 including an electric slide 51, a cylinder 52, an adjustment component 6 and a clamping component 7.

[0044] Among them, the electric slide table 51 is installed on the welding platform 3, the cylinder 52 is installed in the moving block of the electric slide table 51, the adjustment component 6 is set at one end of the output end of the cylinder 52, and the clamping component 7 is set outside the adjustment component 6.

[0045] Specifically, when it is necessary to position and fix the welded outer shell, the cylinder 52 is first moved to a suitable position by the electric slide table 51, so that the cylinder 52 and its connected adjustment component 6 and clamping component 7 are in a position that can accurately clamp the outer shell. The cylinder 52 is then activated, and the output end of the cylinder 52 pushes the adjustment component 6 closer to the outer shell.

[0046] like Figure 7 As shown, in one embodiment of this application, the adjustment assembly 6 includes a fixed housing 61, a gear 62, a handle 63, a rotating rod 64, a push rod 65, and a protective assembly 66.

[0047] The fixed housing 61 is connected to the output end of the cylinder 52, the gear 62 is rotatably connected to the inner wall of the fixed housing 61, the handle 63 is installed on the outer wall of the fixed housing 61, the rotating rod 64 is meshed with the gear 62, and the other end of the handle 63 is connected to the rotating rod 64. The push rod 65 is meshed with the other end of the gear 62, and the protective component 66 is set on the outer wall of the fixed housing 61.

[0048] Specifically, the operator first turns handle 63, which drives rotating rod 64 to rotate. Since rotating rod 64 is meshed with gear 62, the rotation of rotating rod 64 causes gear 62 to rotate on the inner wall of fixed housing 61. Furthermore, since push rod 65 is meshed with the other end of gear 62, the rotation of gear 62 will drive push rod 65 to move, thereby achieving fine adjustment of the position of clamping assembly 7 to better adapt to the shape and size of the housing.

[0049] like Figure 7 As shown, in one embodiment of this application, the protective component 66 includes a protective shell 661 and a bolt 662.

[0050] The protective shell 661 is detachably installed on the outer wall of the fixed shell 61, and the bolt 662 passes through the outer wall of the protective shell 661 and is threadedly connected to the fixed shell 61.

[0051] Understandably, the protective shell 661 is detachably mounted on the outer wall of the fixed shell 61 via bolts 662. The protective shell 661 prevents external dust and debris from entering the adjusting assembly 6, ensuring its normal operation. It also prevents operators from accidentally contacting rotating components such as the gears 62 during operation, thus providing safety protection. If the adjusting assembly 6 requires maintenance or repair, the bolts 662 can be removed, and the protective shell 661 can be taken off.

[0052] like Figure 6 As shown, in one embodiment of this application, the clamping component 7 includes a clamping block 71, a buffer component 72, a flexible fixing post 73, and a floating component 8.

[0053] The clamping block 71 is connected to the other end of the push rod 65, the buffer assembly 72 is disposed inside the clamping block 71, the flexible fixing post 73 is installed on the outer wall of the clamping block 71, and multiple sets of floating assemblies 8 are disposed inside the clamping block 71.

[0054] like Figure 6 As shown, in one embodiment of this application, the buffer assembly 72 includes a limiting post 721, a fourth spring 722, a limiting block 723, and a fifth spring 724.

[0055] The limiting post 721 is fixed to the inner wall of the clamping block 71, one end of the fourth spring 722 is fixed to the inner wall of the limiting post 721, the limiting block 723 is slidably connected to the inner wall of the limiting post 721, and the limiting block 723 is connected to the other end of the fourth spring 722. The fifth spring 724 is sleeved on the outside of the limiting post 721, and the two ends of the fifth spring 724 are respectively connected to the inner wall of the clamping block 71 and one end of the flexible fixing post 73.

[0056] Specifically, when the clamping assembly 7 approaches the housing and begins to apply clamping force, the buffer assembly 72 begins to function. When the flexible fixing post 73 contacts the housing, it is subjected to the reaction force of the housing, at which point the fifth spring 724 is compressed. Simultaneously, the limiting block 723 slides within the limiting post 721 and compresses the fourth spring 722. This dual buffer structure effectively disperses the clamping force, preventing damage to the thin-walled housing caused by concentrated clamping force.

[0057] like Figure 6As shown, in one embodiment of this application, each set of floating components 8 includes a sixth spring 81, a floating block 82, and a connecting rod 83.

[0058] One end of the sixth spring 81 is fixed to the inner wall of the clamping block 71. Multiple floating blocks 82 are provided, and each floating block 82 is connected to the other end of the sixth spring 81. The connecting rod 83 passes through multiple floating blocks 82 and is connected to the outermost floating blocks 82 at both ends.

[0059] Specifically, due to the irregularity of the outer shell surface and the complexity of the structure, when the clamping block 71 contacts the outer shell, the floating block 82 is subjected to clamping pressure, which drives the sixth spring 81 to compress or stretch, thereby causing multiple floating blocks 82 to float up and down. The multiple floating blocks 82 are connected by the connecting rod 83, so that they can work together and adaptively adjust their position to better fit the outer shell surface. This floating structure can increase the stability and fit of the clamping, ensure that the outer shell remains stable during the welding process, and reduce welding deviations caused by the shaking of the outer shell.

[0060] like Figure 1 As shown, in one embodiment of this application, a calibration component 9 is provided on the outer wall of the welding machine 1 and the outside of the base 2. The calibration component 9 includes an infrared aiming device 91 and a control panel 92.

[0061] The infrared aiming device 91 is installed at one end of the welding head of the welding machine 1, and the control panel 92 is installed on the outside of the base 2, and the infrared aiming device 91 and the control panel 92 are electrically connected.

[0062] It should be noted that the infrared aiming device 91 emits infrared light to form a clear aiming point on the surface of the workpiece to be welded. When a positional shift occurs during the welding process, the infrared aiming device 91 will capture the change in real time and quickly transmit the relevant signal to the control panel 92. After receiving the signal, the control panel 92 will immediately adjust the operating parameters of the welding machine 1, such as fine-tuning the position and angle of the welding head, to ensure that the welding head is always accurately aligned with the part to be welded.

[0063] Working principle: When welding the outer shell of an agricultural machinery oil tank, first, the welding machine 1 is stably placed in a suitable working position via the base 2. The outer shell of the oil tank to be welded is then placed on the welding platform 3. Depending on the specifications of the outer shell and the welding requirements, if the welding head needs to be replaced, it is replaced according to the operating procedure of the replacement mechanism 4.

[0064] Next, the electric slide 51 is activated, moving the cylinder 52 to the appropriate position so that it can be accurately aligned with the shell to be welded. The cylinder 52 is then activated, and its output pushes the adjusting component 6 closer to the shell. The operator rotates the handle 63, and through the transmission of the gear 62, rotating rod 64, and pushing rod 65, fine-tunes the position of the clamping component 7, allowing the clamping block 71 to better fit the shell.

[0065] When the clamping block 71 approaches the outer shell, the flexible fixing post 73 contacts the shell first, and the buffer assembly 72 begins to operate. The fifth spring 724 is compressed, and the limiting block 723 slides within the limiting post 721 and compresses the fourth spring 722, dispersing the clamping force and preventing damage to the outer shell. Simultaneously, due to the irregularity of the outer shell surface, the floating assembly 8 comes into play. The floating block 82 is subjected to compressive force, causing the sixth spring 81 to compress or stretch. Multiple floating blocks 82 work in concert through the connecting rod 83, thereby adaptively adjusting their positions according to the extension and contraction of the sixth spring 81, increasing the stability and fit of the clamping.

[0066] During the welding process, the infrared sight 91 emits infrared light to form an aiming point on the workpiece surface. Once the welding head shifts position, the infrared sight 91 detects the change and transmits the signal to the control panel 92. The control panel 92 then adjusts the operating parameters of the welding machine 1 in a timely manner to ensure that the welding head is accurately aligned with the part to be welded.

[0067] After welding is completed, first shut off cylinder 52 to release the clamping assembly 7 from the housing. Then shut off the electric slide 51 and reset it. Finally, remove the welded oil tank housing to complete the entire welding process.

[0068] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A welding fixture for the outer shell of an oil tank in agricultural machinery, characterized in that, It includes a welding machine (1), a base (2), a welding platform (3), and a replacement mechanism (4), wherein, The base (2) is installed on the bottom wall of the welding machine (1); The welding platform (3) is mounted on the base (2); The replacement mechanism (4) includes an upper mounting base (41), an upper positioning base (42), a first spring (43), an anti-slip block (44), a second spring (45), a lower mounting base (46), a lower positioning base (47), a third spring (48), and a fixing assembly (49), wherein, The upper mounting base (41) is installed at one end of the welding head of the welding machine (1); The upper positioning seat (42) is installed inside the upper mounting seat (41); The first spring (43) is sleeved on the outside of the upper positioning seat (42), and the two ends of the first spring (43) are respectively connected to the inner wall of the upper mounting seat (41) and the outer wall of the upper positioning seat (42); The anti-slip block (44) is sleeved on the outer wall of the upper mounting base (41); The second spring (45) is sleeved on the outer wall of the upper mounting base (41); The lower mounting base (46) is installed inside the upper mounting base (41); The lower positioning seat (47) is installed inside the lower mounting seat (46); The third spring (48) is sleeved on the outer wall of the lower positioning seat (47), and the two ends of the third spring (48) are respectively connected to the inner wall of the lower mounting seat (46) and the outer wall of the lower positioning seat (47); The fixing component (49) is disposed inside the upper mounting base (41).

2. The welding fixture for the outer shell of an oil tank in agricultural machinery according to claim 1, characterized in that, The fixing component (49) includes a fixing ball (492), wherein, The inner wall of the upper mounting base (41) is provided with a fixing hole (491). The fixed ball (492) is placed inside the fixed hole (491); The lower mounting base (46) has a fixing groove (493) on its outer wall, and the position of the fixing groove (493) corresponds one-to-one with the position of the fixing ball (492).

3. The welding fixture for the outer shell of an oil tank in agricultural machinery according to claim 2, characterized in that, The welding platform (3) is equipped with two sets of stabilizing mechanisms (5). Each set of stabilizing mechanisms (5) includes an electric slide (51), a cylinder (52), an adjustment assembly (6), and a clamping assembly (7). The electric slide (51) is mounted on the welding platform (3); The cylinder (52) is installed inside the moving block of the electric slide (51); The adjustment component (6) is disposed at one end of the output end of the cylinder (52); The clamping component (7) is disposed outside the adjusting component (6).

4. The welding fixture for the outer shell of an oil tank in agricultural machinery according to claim 3, characterized in that, The adjustment assembly (6) includes a fixed housing (61), a gear (62), a handle (63), a rotating rod (64), a pushing rod (65), and a protective assembly (66), wherein, The fixed housing (61) is connected to the output end of the cylinder (52); The gear (62) is rotatably connected to the inner wall of the fixed housing (61); The handle (63) is mounted on the outer wall of the fixed shell (61); The rotating rod (64) is meshed with the gear (62), and the other end of the handle (63) is connected to the rotating rod (64); The push rod (65) is engaged with the other end of the gear (62); The protective component (66) is disposed on the outer wall of the fixed shell (61).

5. The welding fixture for the outer shell of an oil tank in agricultural machinery according to claim 4, characterized in that, The protective component (66) includes a protective shell (661) and bolts (662), wherein, The protective shell (661) is detachably mounted on the outer wall of the fixed shell (61); The bolt (662) passes through the outer wall of the protective shell (661) and is threadedly connected to the fixed shell (61).

6. The welding fixture for the outer shell of an oil tank in agricultural machinery according to claim 4, characterized in that, The clamping assembly (7) includes a clamping block (71), a buffer assembly (72), a flexible fixing post (73), and a floating assembly (8), wherein, The clamping block (71) is connected to the other end of the push rod (65); The buffer assembly (72) is disposed inside the clamping block (71); The flexible fixing column (73) is installed on the outer wall of the clamping block (71); Multiple sets of floating components (8) are provided, and the floating components (8) are located inside the clamping block (71).

7. A welding fixture for the outer shell of an oil tank in agricultural machinery according to claim 6, characterized in that, The buffer assembly (72) includes a limiting post (721), a fourth spring (722), a limiting block (723), and a fifth spring (724), wherein, The limiting post (721) is fixed to the inner wall of the clamping block (71); One end of the fourth spring (722) is fixed to the inner wall of the limiting post (721); The limiting block (723) is slidably connected to the inner wall of the limiting post (721), and the limiting block (723) is connected to the other end of the fourth spring (722); The fifth spring (724) is sleeved on the outside of the limiting post (721), and the two ends of the fifth spring (724) are respectively connected to the inner wall of the clamping block (71) and one end of the flexible fixing post (73).

8. A welding fixture for the outer shell of an oil tank in agricultural machinery according to claim 6, characterized in that, Each set of the floating components (8) includes a sixth spring (81), a floating block (82), and a connecting rod (83), wherein, One end of the sixth spring (81) is fixed to the inner wall of the clamping block (71); Multiple floating blocks (82) are provided, and each floating block (82) is connected to the other end of the sixth spring (81); The connecting rod (83) passes through multiple floating blocks (82) and is connected to the outermost floating blocks (82) at both ends.

9. A welding fixture for the outer shell of an oil tank in agricultural machinery according to claim 1, characterized in that, The outer wall of the welding machine (1) and the exterior of the base (2) are provided with a calibration assembly (9), which includes an infrared sight (91) and a control panel (92). The infrared sight (91) is installed at one end of the welding head of the welding machine (1); The control panel (92) is mounted on the outside of the base (2), and the infrared sight (91) and the control panel (92) are electrically connected.

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