A welding device for oil tank overflow gate valve

Abstract

The application discloses an oil tank anti-overflow gate valve welding device and relates to the technical field of welding devices.The application comprises a machining table, a welding gun body is fixed on one side of the top of the machining table through a flexible support, a gap device is arranged on the top of the machining table, a flange fixing assembly is arranged in the middle of the top of the machining table, the gap device comprises a fixing rod, the fixing rod is fixed on the top of the machining table, and a back-shaped frame is fixed on the top of the fixing rod.The gap device is arranged, so that the flange fixing assembly, the arc-shaped sliding plate, the sliding arc plate, the first screw rod, the first screw block, the back-shaped frame, the fixed arc plate and the hinged rod are cooperatively driven to insert four telescopic inclined surface columns into the gap between the flange and the anti-overflow gate valve body, the four telescopic inclined surface columns can keep the gap between the flange and the anti-overflow gate valve body equal, so that the welding area between the anti-overflow gate valve body and the flange is uniform, and the welding metal can uniformly fill the whole gap.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to a welding device for an oil tank anti-overflow gate valve. Background Technology

[0002] An anti-overflow gate valve welding device is a safety device used to prevent liquid spillage, commonly found in pipeline systems in industries such as petroleum and chemical manufacturing. This device uses precision welding technology to ensure the gate valve's sealing and pressure resistance, effectively preventing media leakage or overflow under high-pressure environments. The welding device is made of high-strength materials with corrosion resistance and wear resistance, ensuring long-term stable system operation and improving equipment safety and reliability.

[0003] Chinese patent publication number CN212329942U discloses a valve flange rotary welding device, including a frame. A speed-regulating motor is fixed to the bottom of the frame. A drive disc is provided inside the frame, and the output end of the speed-regulating motor is fixedly connected to the center of the bottom end of the drive disc. A first flange is provided at the top of the drive disc, and a first screw passes through the drive disc, with the end of the first screw threaded onto the first flange. This valve flange rotary welding device uses a speed-regulating motor to drive the drive disc to rotate, and a bearing to make the driven disc rotate synchronously. An electric telescopic rod pushes a welding torch mounting plate, moving two welding torches to the connection end between the first flange and the first welding end, and the connection end between the second flange and the second welding end. This achieves the effect of circumferential welding of the valve body during rotation. Furthermore, by using two welding torches, the flanges at both ends of the valve body can be welded simultaneously, reducing the labor intensity of workers and improving welding efficiency.

[0004] However, the current welding device has the following problems: when welding the valve body and flange of the overflow gate valve, it is not convenient to control the welding gap between the outer diameter of the valve body and the inner diameter of the flange. Equal gap between the outer diameter of the valve body and the inner diameter of the flange can ensure uniform welding area and uniform filling of the gap with welding metal. If the gap is not uniform, there may be too much or too little welding metal in some areas, which will affect the welding quality, cause uneven weld, or even produce welding defects such as incomplete fusion or porosity. Therefore, we propose a welding device for oil tank overflow gate valves. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a welding device for an anti-overflow gate valve for oil tanks, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a welding device for an oil tank anti-overflow gate valve, comprising a processing table, a welding torch body fixed to one side of the top of the processing table by a flexible bracket, a slit device provided on the top of the processing table, a flange fixing assembly provided in the middle of the top of the processing table, the slit device including a fixing rod fixed to the top of the processing table, a U-shaped frame fixed to the top of the fixing rod, a fixing arc plate fixed to the side of the U-shaped frame away from the fixing rod, and a screw rotatably mounted inside the U-shaped frame. First, a screw block is externally threaded onto the screw rod, and the screw block is slidably installed inside the spiral frame. An L-shaped column is fixed to the side of the fixed arc plate near the spiral frame. A sliding arc plate is slidably installed on the outside of the L-shaped column. The sliding arc plate and the screw block are hinged together by a hinge rod. Two arc-shaped sliding plates are slidably installed on the inner side of the sliding arc plate. Telescopic inclined columns are fixed to both sides of the bottom of the two arc-shaped sliding plates. The bottom of the telescopic inclined column is inclined, and the inclined surface of the telescopic inclined column is away from the sliding arc plate. The flange fixing assembly includes a motor, which is fixed to the bottom of the processing table. A placement plate is fixed to the top of the motor's output end. A groove is formed on the top of the placement plate, and a bidirectional screw is rotatably installed inside the groove. Two screw blocks are threaded to both sides of the bidirectional screw, and these two screw blocks are slidably installed inside the groove of the placement plate. An inclined clamping plate is fixed to the top of each of the two screw blocks. The bidirectional screw drives the two screw blocks to move towards the center of the placement plate, and the screw blocks drive the inclined clamping plates to move accordingly. The flange is clamped and fixed by the plate. The arc-shaped sliding plate is moved away from the sliding arc plate, so that the two arc-shaped sliding plates drive the telescopic inclined columns to cover the outside of the anti-overflow gate valve body. Then, the operator rotates screw one, which drives screw block one to move along the U-shaped frame towards the fixed arc plate. Screw block one pushes the hinge rod to drive the sliding arc plate to move downward along the outer wall of the L-shaped column. The sliding arc plate drives the telescopic inclined columns to move along with it through the arc-shaped sliding plate until the four telescopic inclined columns are inserted into the gap between the flange and the anti-overflow gate valve body.

[0007] According to the above technical solution, a fixed post is fixed in the middle of the top of each of the two curved sliding plates, and baffles are fixed on both sides of the top of the sliding curved plate. The baffles are located on the movement trajectory of the fixed post. When the curved sliding plate moves, it will drive the fixed post to move along with it until the fixed post and the baffles come into contact, so that the baffles restrict the position of the curved sliding plate through the fixed post.

[0008] According to the above technical solution, the gap device further includes an abutment rod and an elastic telescopic rod. The abutment rod is fixed on the side of the telescopic end of the telescopic inclined column away from the center of the sliding arc plate. The fixed end of the elastic telescopic rod is fixed to the outer wall of the placement plate. A trapezoidal arc plate is fixed to the top of the telescopic end of the elastic telescopic rod. When the telescopic inclined column moves downward, the telescopic inclined column will drive the abutment rod to abut against the top of the trapezoidal arc plate. When the placement plate rotates, the placement plate rotates through the elastic telescopic rod and the trapezoidal arc plate. When the trapezoidal arc plate moves to the abutment rod, the trapezoidal arc plate pushes the abutment rod to drive the telescopic end of the telescopic inclined column to move upward, and the gap between the telescopic inclined column and the flange and the anti-overflow gate valve body separates.

[0009] According to the above technical solution, a hole-fixing device is provided on the outside of the spiral frame. The hole-fixing device includes a spiral plate and a screw rod. The screw rod is rotatably installed on the outer wall of the spiral frame. The spiral plate is slidably installed on the outer wall of the spiral frame. A screw block is fixed on the outer wall of the spiral plate. The screw block is threaded to the outside of the screw rod. Slider blocks are slidably installed on the upper and lower sides of the inside of the spiral plate. The sliders are hinged to the screw blocks via a telescopic connecting rod. An L-shaped telescopic rod is fixed on the side of the slider away from the screw blocks. The vertical support of the L-shaped telescopic rod is designed as a telescopic structure. A ball is fixed on the side of the vertical support away from the center of the U-shaped plate. The screw block pushes the slider to move the L-shaped telescopic rod towards the flange until the ball of the L-shaped telescopic rod abuts against the flange. Then, the operator rotates the screw three, which drives the screw block three to move the U-shaped plate along the outside of the U-shaped frame. The U-shaped plate moves the L-shaped telescopic rod through the slider, so that the L-shaped telescopic rod moves to the threaded hole position of the flange, and the ball of the L-shaped telescopic rod falls into the flange threaded hole.

[0010] According to the above technical solution, an L-shaped frame is fixed to the lower outer wall of the L-shaped column, and a trapezoidal groove arc rod is fixed to the bottom of the L-shaped frame. A sliding column is fixed to the side of the telescopic end of the elastic telescopic rod one that is close to the center of the placement plate. A trapezoidal groove is opened on the outer wall of the trapezoidal groove arc rod, and a chamfer is provided at the entrance of the trapezoidal groove arc rod. The entrance of the trapezoidal groove arc rod is located on the movement trajectory of the sliding column. The bottom of the trapezoidal arc plate and the top of the trapezoidal groove arc rod are on the same horizontal plane. When the elastic telescopic rod one rotates, it will also drive the sliding column to rotate. The sliding column enters the trapezoidal groove of the trapezoidal groove arc rod through the entrance of the trapezoidal groove arc rod. Under the restriction of the trapezoidal groove of the trapezoidal groove arc rod, when the elastic telescopic rod one moves to the L-shaped column, the trapezoidal groove of the trapezoidal groove arc rod pushes the sliding column to drive the telescopic end of the elastic telescopic rod one to extend and retract downward, thereby causing the elastic telescopic rod one to drive the trapezoidal arc plate to move downward to avoid the L-shaped telescopic rod.

[0011] According to the above technical solution, a synchronization device is provided on the top of the placement tray. The synchronization device includes a cross-shaped pad and two vertical rods. The cross-shaped pad is fixed to the top of the placement tray. Each of the four support rods of the cross-shaped pad is slidably mounted with an elastic telescopic rod II. The two vertical rods are respectively fixed to the tops of two screw blocks II. A push rod I is hinged to the side of the tops of the two vertical rods that are close to each other. A connecting plate is hinged between the two push rods I. The outer wall of the connecting plate is hinged to the top of the fixed end of the elastic telescopic rod II through the push rod II. An anti-slip pad is fixed to the side of the telescopic end of the elastic telescopic rod II away from the center of the placement tray. Each time the two screw blocks II move towards the center of the placement tray, the two screw blocks II drive the vertical rods to move accordingly. The vertical rods push the push rod I to move the connecting plate downwards. The connecting plate pushes the push rod II to move the elastic telescopic rod II along the top of the cross-shaped pad towards the direction away from the center of the placement tray until the telescopic end of the elastic telescopic rod II abuts against the inner wall of the anti-overflow gate valve body.

[0012] This invention provides a welding device for an anti-overflow gate valve for oil tanks. It has the following beneficial effects:

[0013] (1) The present invention, through the setting of the gap device, enables the flange fixing component, the arc-shaped sliding plate, the sliding arc plate, the screw rod, the screw block, the U-shaped frame, the fixed arc plate, and the hinge rod to cooperate to drive the four telescopic inclined columns to be inserted into the gap between the flange and the anti-overflow gate valve body. The four telescopic inclined columns can keep the gap between the flange and the anti-overflow gate valve body equal, thereby ensuring that the welding area between the anti-overflow gate valve body and the flange is uniform and the welding metal can uniformly fill the entire gap; at the same time, when the trapezoidal arc plate moves to the contact rod, the trapezoidal arc plate pushes the contact rod to drive the telescopic end of the telescopic inclined column to move upward, and the gap between the telescopic inclined column and the flange and the anti-overflow gate valve body is separated, thereby avoiding the problem that the telescopic inclined column is continuously stuck in the gap between the flange and the anti-overflow gate valve body, affecting the welding operation.

[0014] (2) By setting the fixed hole device, the present invention enables the screw block one, slider, L-shaped telescopic rod, screw three, screw block three, return plate and return frame to move the L-shaped telescopic rod to the threaded hole position of the flange. The ball of the L-shaped telescopic rod falls into the flange threaded hole, so that when the workers weld the flanges at both ends of the anti-overflow gate valve body, the threaded holes of the flanges at both ends correspond, ensuring that the bolts can be connected smoothly during assembly, avoiding the problem that the bolts cannot be installed correctly due to the incorrect position of the threaded hole.

[0015] (3) By setting up a synchronization device, the present invention enables the screw block 2, vertical rod, push rod 1, connecting plate, and push rod 2 to work together to drive the extension end of the elastic telescopic rod 2 to abut against the inner wall of the anti-overflow gate valve body. Furthermore, the anti-slip pad on the extension end of the elastic telescopic rod 2 can prevent slippage between the extension end of the elastic telescopic rod 2 and the inner wall of the anti-overflow gate valve body. This allows the anti-overflow gate valve body to rotate synchronously when the placement plate drives the flange to rotate. Through synchronous rotation, the welding process of the flange and the anti-overflow gate valve body can be carried out continuously without frequent adjustment of component positions. This reduces the time wasted due to adjusting component positions, thereby improving the efficiency of welding operations. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the entire invention. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the entire invention. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the slit device of the present invention. Figure 1 ;

[0019] Figure 4 This is a schematic diagram of the slit device of the present invention. Figure 2 ;

[0020] Figure 5 This is a schematic diagram illustrating the operation of the telescopic inclined column of the present invention;

[0021] Figure 6 This is a schematic diagram of the hole-fixing device of the present invention;

[0022] Figure 7 This is a schematic diagram of the synchronization device of the present invention.

[0023] In the diagram: 1. Processing table; 2. Welding torch body; 3. Flange fixing assembly; 31. Motor; 32. Placement tray; 33. Screw block two; 34. Slanted clamping plate; 35. Bidirectional screw; 4. Gap device; 41. Fixing rod; 42. Retractable frame; 43. Screw block one; 44. Screw one; 45. L-shaped column; 46. Fixed arc plate; 47. Sliding arc plate; 48. Arc-shaped sliding plate; 49. Telescopic inclined column; 410. Fixed column; 411. Baffle; 412. Contact 413. Trapezoidal groove arc rod; 414. Trapezoidal arc plate; 415. Elastic telescopic rod one; 416. Sliding column; 417. L-shaped frame; 418. Hinge rod; 5. Fixed hole device; 51. Recurved plate; 52. L-shaped telescopic rod; 53. Sliding block; 54. Telescopic connecting rod; 55. Screw block three; 56. Screw three; 6. Synchronization device; 61. Vertical rod; 62. Push rod one; 63. Connecting plate; 64. Push rod two; 65. Elastic telescopic rod two; 66. Cross pad. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Please see Figures 1-7 One embodiment of the present invention is: a welding device for an oil tank anti-overflow gate valve, including a processing table 1, a welding torch body 2 fixed to one side of the top of the processing table 1 by a flexible bracket, a slit device 4 provided on the top of the processing table 1, a flange fixing assembly 3 provided in the middle of the top of the processing table 1, the slit device 4 including a fixing rod 41, the fixing rod 41 fixed to the top of the processing table 1, a ring frame 42 fixed to the top of the fixing rod 41, a fixing arc plate 46 fixed to the side of the ring frame 42 away from the fixing rod 41, a screw 44 rotatably installed inside the ring frame 42, a screw block 43 threadedly connected to the outside of the screw 44, and the screw block 43 slidably installed inside the ring frame 42, an L-shaped column rod 45 fixed to the side of the fixing arc plate 46 near the ring frame 42, a sliding arc plate 47 slidably installed on the outside of the L-shaped column rod 45, and the sliding arc plate 47 and the screw block 43 are hingedly connected by a hinge rod 418 (e.g., Figure 5 As shown), two arc-shaped sliding plates 48 are slidably installed on the inner side of the sliding arc plate 47. Telescopic inclined columns 49 are fixed to both sides of the bottom of each of the two arc-shaped sliding plates 48. The bottom of the telescopic ends of the telescopic inclined columns 49 are inclined, and the inclined surfaces of the telescopic ends of the telescopic inclined columns 49 are oriented away from the center of the sliding arc plate 47. The flange fixing assembly 3 includes a motor 31. The motor 31 (as shown) Figure 7 As shown, a placement plate 32 is fixed to the top of the output end of the motor 31 at the bottom of the processing table 1. The top of the placement plate 32 has a groove. A bidirectional screw 35 is rotatably installed inside the groove of the placement plate 32. Both sides of the bidirectional screw 35 are threadedly connected to screw blocks 33, and the screw blocks 33 are slidably installed inside the groove of the placement plate 32. The top of the two screw blocks 33 is fixed with inclined clamps 34. With the above structure, four telescopic inclined columns 49 are inserted into the gap between the flange and the valve body of the anti-overflow gate valve. The four telescopic inclined columns 49 can keep the gap between the flange and the valve body of the anti-overflow gate valve equal, thereby ensuring that the welding area between the valve body of the anti-overflow gate valve and the flange is uniform and the welding metal can evenly fill the entire gap.

[0026] A fixed post 410 is fixed to the middle of the top of each of the two arc-shaped sliding plates 48, and baffles 411 are fixed to both sides of the top of the sliding arc plate 47. The baffles 411 are located on the movement trajectory of the fixed post 410. Through the above structure, the baffles 411 restrict the position of the arc-shaped sliding plates 48 through the fixed post 410, thereby preventing the arc-shaped sliding plates 48 from moving the telescopic inclined column 49 to the welding position of the flange and the anti-overflow gate valve body, which would affect the welding operation.

[0027] The gap device 4 also includes an abutment rod 412 and an elastic telescopic rod 415. The abutment rod 412 is fixed on the side of the telescopic end of the telescopic inclined column 49 away from the center of the sliding arc plate 47. The fixed end of the elastic telescopic rod 415 is fixed on the outer wall of the placement plate 32. A trapezoidal arc plate 414 is fixed to the top of the telescopic end of the elastic telescopic rod 415. With the above structure, the trapezoidal arc plate 414 pushes the abutment rod 412 to move the telescopic end of the telescopic inclined column 49 upward, and the gap between the telescopic inclined column 49 and the flange and the anti-overflow gate valve body is separated, thereby avoiding the problem that the telescopic inclined column 49 is continuously stuck in the gap between the flange and the anti-overflow gate valve body, which affects the welding operation.

[0028] The outer side of the forming frame 42 is provided with a hole-fixing device 5, which includes a forming plate 51 and a screw rod 56. The screw rod 56 is rotatably mounted on the outer wall of the forming frame 42 (e.g., Figure 6 As shown, the U-shaped plate 51 is slidably installed on the outer wall of the U-shaped frame 42. A screw block 3 55 is fixed on the outer wall of the U-shaped plate 51. The screw block 3 55 is threaded to the outside of the screw rod 3 56. Sliding sliders 53 are slidably installed on the upper and lower sides of the inside of the U-shaped plate 51. The sliders 53 and the screw block 43 are hinged together by a telescopic connecting rod 54. An L-shaped telescopic rod 52 is fixed on the side of the slider 53 away from the screw block 43. The vertical support of the L-shaped telescopic rod 52 is a telescopic structure. A ball is fixed on the side of the vertical support of the L-shaped telescopic rod 52 away from the center of the U-shaped plate 51. Through the above structure, the ball of the L-shaped telescopic rod 52 falls into the flange bolt hole, so that when the workers weld the flanges at both ends of the anti-overflow gate valve body, the bolt holes of the flanges at both ends correspond, ensuring that the bolts can be smoothly connected during assembly and avoiding the problem of bolts not being installed correctly due to incorrect bolt hole position.

[0029] An L-shaped frame 417 is fixed to the lower outer wall of the L-shaped column 45. A trapezoidal groove arc rod 413 is fixed to the bottom of the L-shaped frame 417. A sliding column 416 is fixed to the telescopic end of the elastic telescopic rod 415 near the center of the placement plate 32. Figure 7As shown), a trapezoidal groove is provided on the outer wall of the trapezoidal groove arc rod 413. The entrance of the trapezoidal groove of the trapezoidal groove arc rod 413 is chamfered. The entrance of the trapezoidal groove of the trapezoidal groove arc rod 413 is located on the movement trajectory of the sliding column 416. The bottom of the trapezoidal arc plate 414 and the top of the trapezoidal groove arc rod 413 are on the same horizontal plane. Through the above structure, the elastic telescopic rod 415 drives the trapezoidal arc plate 414 to move downward to avoid the L-shaped telescopic rod 52, thereby avoiding the problem that the existence of the L-shaped telescopic rod 52 will interfere with the movement of the elastic telescopic rod 415 driving the trapezoidal arc plate 414.

[0030] In use, place the flange and the anti-overflow gate valve body on the placement tray 32, with the anti-overflow gate valve body inside the flange. The operator rotates the double-acting screw 35, which drives the two screw blocks 33 to move towards the center of the placement tray 32. The screw blocks 33 then move the inclined clamping plates 34, which clamp and fix the flange. The operator then moves the arc-shaped sliding plate 48 away from the sliding arc plate 47, causing the two arc-shaped sliding plates 48 to cover the outside of the anti-overflow gate valve body with the telescopic inclined column 49. Next, the operator rotates the screw 44, which drives the screw block 43 to move along the U-shaped frame 42 towards the fixed arc plate 47. Moving in the direction of 6, the screw block 43 pushes the hinge rod 418, causing the sliding arc plate 47 to move downward along the outer wall of the L-shaped column rod 45. The sliding arc plate 47 drives the telescopic inclined column 49 to move along with it through the arc-shaped sliding plate 48 until the four telescopic inclined columns 49 are inserted into the gap between the flange and the anti-overflow gate valve body. The four telescopic inclined columns 49 can keep the gap between the flange and the anti-overflow gate valve body equal, thereby ensuring that the welding area between the anti-overflow gate valve body and the flange is uniform and the welding metal can evenly fill the entire gap. When welding is required, the worker holds the welding torch body 2 and starts the motor 31 to drive the placement plate 32 to rotate the flange to carry out the welding operation.

[0031] It should be noted that when the arc-shaped sliding plate 48 moves, it will drive the fixed column 410 to move as well, until the fixed column 410 abuts against the baffle 411. This allows the baffle 411 to restrict the position of the arc-shaped sliding plate 48 through the fixed column 410, thereby preventing the arc-shaped sliding plate 48 from driving the telescopic inclined column 49 to the welding position of the flange and the anti-overflow gate valve body, which would otherwise affect the welding operation.

[0032] When the telescopic inclined column 49 moves downward, it will cause the abutment rod 412 to abut against the top of the trapezoidal groove arc rod 413. When the placement plate 32 rotates, the placement plate 32 rotates through the elastic telescopic rod 415 and the trapezoidal arc plate 414. When the trapezoidal arc plate 414 moves to the abutment rod 412 (that is, the welding position of the flange and the anti-overflow gate valve body is about to move to the telescopic inclined column 49), the trapezoidal arc plate 414 pushes the abutment rod 412 to cause the telescopic end of the telescopic inclined column 49 to move upward. The gap between the telescopic inclined column 49 and the flange and the anti-overflow gate valve body is separated, thereby avoiding the problem of the telescopic inclined column 49 being stuck in the gap between the flange and the anti-overflow gate valve body, which affects the welding operation.

[0033] When screw block 43 moves, it pushes slider 53 to move L-shaped telescopic rod 52 toward the flange until the ball of L-shaped telescopic rod 52 abuts against the flange. Then, the operator rotates screw 3 56, which drives screw block 3 55 to move the return plate 51 along the outside of the return frame 42. The return plate 51 moves L-shaped telescopic rod 52 through slider 53, so that L-shaped telescopic rod 52 moves to the threaded hole position of the flange. The ball of L-shaped telescopic rod 52 falls into the flange threaded hole, so that the threaded holes of the flanges at both ends of the anti-overflow gate valve body correspond when the operator welds them. This ensures that the bolts can be smoothly connected during assembly and avoids the problem of bolts not being installed correctly due to incorrect threaded hole position. It should be noted that since the telescopic connecting rod 54 is telescopic, its existence will not affect the operation of the return plate 51.

[0034] It should be noted that when the elastic telescopic rod 415 rotates, it also drives the sliding column 416 to rotate. The sliding column 416 enters the trapezoidal groove of the trapezoidal groove arc rod 413 through the trapezoidal groove inlet. Under the constraint of the trapezoidal groove of the trapezoidal groove arc rod 413, when the elastic telescopic rod 415 moves to the L-shaped column 45, the trapezoidal groove of the trapezoidal groove arc rod 413 pushes the sliding column 416 to drive the telescopic end of the elastic telescopic rod 415 to extend and retract downward. This causes the elastic telescopic rod 415 to drive the trapezoidal arc plate 414 to move downward to avoid the L-shaped telescopic rod 52, thus avoiding the problem that the presence of the L-shaped telescopic rod 52 would interfere with the movement of the elastic telescopic rod 415 and the trapezoidal arc plate 414.

[0035] Please see Figures 1-7Based on the above embodiments, in another embodiment of the present invention, a synchronization device 6 is provided on the top of the placement tray 32. The synchronization device 6 includes a cross pad 66 and two vertical rods 61. The cross pad 66 is fixed to the top of the placement tray 32. Elastic telescopic rods 65 are slidably installed on the tops of the four support rods of the cross pad 66. The two vertical rods 61 are respectively fixed to the tops of two screw blocks 33. Push rods 62 are hinged to the sides of the tops of the two vertical rods 61 that are close to each other. A connecting plate 63 is hinged between the two push rods 62. The outer wall of the connecting plate 63 is hinged to the top of the fixed end of the elastic telescopic rod 65 via push rods 64. An anti-slip pad is fixed on the side of the telescopic end of the 5th section away from the center of the placement plate 32. Through the above structure, the telescopic end of the elastic telescopic rod 65 abuts against the inner wall of the anti-overflow gate valve body. The anti-slip pad on the telescopic end of the elastic telescopic rod 65 prevents slippage between the telescopic end of the elastic telescopic rod 65 and the inner wall of the anti-overflow gate valve body. This allows the anti-overflow gate valve body to rotate synchronously when the placement plate 32 rotates the flange. Through synchronous rotation, the welding process of the flange and the anti-overflow gate valve body can be carried out continuously without frequent adjustment of component positions. This reduces the time wasted due to adjusting component positions and thus improves the efficiency of welding operations.

[0036] In use, each time the two screw blocks 33 move towards the center of the placement plate 32, the two screw blocks 33 drive the vertical rod 61 to move accordingly. The vertical rod 61 pushes the push rod 62, which in turn drives the connecting plate 63 downward. The connecting plate 63 pushes the push rod 64, which in turn drives the elastic telescopic rod 65 to move away from the center of the placement plate 32 along the top of the cross pad 66 until the telescopic end of the elastic telescopic rod 65 abuts against the inner wall of the anti-overflow gate valve body. The anti-slip pad on the telescopic end of the elastic telescopic rod 65 prevents slippage between the telescopic end of the elastic telescopic rod 65 and the inner wall of the anti-overflow gate valve body. This allows the anti-overflow gate valve body to rotate synchronously when the placement plate 32 drives the flange to rotate. Through synchronous rotation, the welding process of the flange and the anti-overflow gate valve body can be carried out continuously without frequent adjustment of component positions. This reduces the time wasted due to component position adjustments, thereby improving the efficiency of the welding operation.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A welding device for an oil tank anti-overflow gate valve, comprising a processing table (1), wherein a welding torch body (2) is fixed to one side of the top of the processing table (1) by a flexible bracket, characterized in that: A slit device (4) is provided on the top of the processing table (1), and a flange fixing assembly (3) is provided in the middle of the top of the processing table (1). The slit device (4) includes a fixing rod (41), which is fixed to the top of the processing table (1). A ring frame (42) is fixed to the top of the fixing rod (41). A fixing arc plate (46) is fixed to the side of the ring frame (42) away from the fixing rod (41). A screw (44) is rotatably installed inside the ring frame (42), and the external thread of the screw (44) is connected to a screw. Screw block 1 (43) is slidably installed inside the spiral frame (42). The fixed arc plate (46) is fixed with an L-shaped column (45) on the side near the spiral frame (42). A sliding arc plate (47) is slidably installed on the outside of the L-shaped column (45). The sliding arc plate (47) and screw block 1 (43) are hinged together by a hinge rod (418). Two arc-shaped sliding plates (48) are slidably installed on the inside of the sliding arc plate (47). Telescopic inclined columns (49) are fixed on both sides of the bottom of the two arc-shaped sliding plates (48). The flange fixing assembly (3) includes a motor (31), which is fixed to the bottom of the processing table (1). A placement plate (32) is fixed to the top of the output end of the motor (31). A groove is provided on the top of the placement plate (32). A bidirectional screw (35) is rotatably installed inside the groove of the placement plate (32). Both sides of the bidirectional screw (35) are threadedly connected to screw blocks (33), and the screw blocks (33) are slidably installed inside the groove of the placement plate (32). An inclined clamp (34) is fixed to the top of each of the two screw blocks (33). The gap device (4) also includes an abutment rod (412) and an elastic telescopic rod (415). The abutment rod (412) is fixed on the side of the telescopic end of the telescopic inclined column (49) away from the center of the sliding arc plate (47). The fixed end of the elastic telescopic rod (415) is fixed on the outer wall of the placement plate (32). A trapezoidal arc plate (414) is fixed on the top of the telescopic end of the elastic telescopic rod (415).

2. The welding device for an anti-overflow gate valve of an oil tank according to claim 1, characterized in that: The bottom of the telescopic inclined column (49) is set with an inclined surface, and the inclined surface of the telescopic inclined column (49) is set away from the center of the sliding arc plate (47).

3. The welding device for an anti-overflow gate valve of an oil tank according to claim 1, characterized in that: A fixed post (410) is fixed at the top center of each of the two arc-shaped sliding plates (48), and baffles (411) are fixed on both sides of the top of the sliding arc plate (47). The baffles (411) are located on the movement trajectory of the fixed post (410).

4. The welding device for an anti-overflow gate valve of an oil tank according to claim 1, characterized in that: An L-shaped frame (417) is fixed to the lower outer wall of the L-shaped column (45). A trapezoidal groove arc rod (413) is fixed to the bottom of the L-shaped frame (417). A sliding column (416) is fixed to the side of the telescopic end of the elastic telescopic rod (415) near the center of the placement plate (32). A trapezoidal groove is provided on the outer wall of the trapezoidal groove arc rod (413). A chamfer is provided at the entrance of the trapezoidal groove of the trapezoidal groove arc rod (413). The entrance of the trapezoidal groove of the trapezoidal groove arc rod (413) is located on the movement trajectory of the sliding column (416). The bottom of the trapezoidal arc plate (414) and the top of the trapezoidal groove arc rod (413) are on the same horizontal plane.

5. The welding device for an anti-overflow gate valve of an oil tank according to claim 1, characterized in that: The outer side of the spiral frame (42) is provided with a hole fixing device (5). The hole fixing device (5) includes a spiral plate (51) and a screw three (56). The screw three (56) is rotatably installed on the outer wall of the spiral frame (42). The spiral plate (51) is slidably installed on the outer wall of the spiral frame (42). A screw block three (55) is fixed on the outer wall of the spiral plate (51). The screw block three (55) is threaded to the outside of the screw three (56). A slider (53) is slidably installed on the upper and lower sides of the inner side of the spiral plate (51). The slider (53) is hinged to the screw block one (43) through a telescopic connecting rod (54). An L-shaped telescopic rod (52) is fixed on the side of the slider (53) away from the screw block one (43).

6. The welding device for an anti-overflow gate valve of an oil tank according to claim 5, characterized in that: The vertical support of the L-shaped telescopic rod (52) is a telescopic structure, and a ball is fixed on the side of the vertical support away from the center of the U-shaped plate (51).

7. The welding device for an anti-overflow gate valve of an oil tank according to claim 1, characterized in that: The top of the placement tray (32) is provided with a synchronization device (6). The synchronization device (6) includes a cross pad (66) and two vertical rods (61). The cross pad (66) is fixed on the top of the placement tray (32). The top of the four support rods of the cross pad (66) are all slidably installed with elastic telescopic rods (65). The two vertical rods (61) are respectively fixed on the top of two screw blocks (33). The top of the two vertical rods (61) are hinged to the side of each other. A connecting plate (63) is hinged between the two push rods (62). The outer wall of the connecting plate (63) is hinged to the top of the fixed end of the elastic telescopic rod (65) through the push rod (64).

8. The welding device for an anti-overflow gate valve for an oil tank according to claim 7, characterized in that: An anti-slip pad is fixed to the side of the telescopic end of the second elastic telescopic rod (65) away from the center of the placement plate (32).

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