Automatic welding device for transformer expansion tank

Abstract

The invention discloses an automatic welding device for a transformer expansion tank, and mainly relates to the technical field of welding devices. Comprising a positioning plate and an arc-shaped plate, a shaft sleeve is arranged on one side of the positioning plate, a first sliding plate and a second sliding plate are slidably connected to the shaft sleeve, the two ends of the first connecting rod are rotationally connected with one end of the first sliding plate and one end of the arc-shaped plate respectively, and the two ends of the second connecting rod are rotationally connected with the other end of the second sliding plate and the other end of the arc-shaped plate respectively. A first screw in threaded connection with the first sliding plate and the second sliding plate is rotationally connected to the shaft sleeve, a third sliding plate is slidably connected to the movable frame, a plurality of fourth sliding plates are slidably connected to the third sliding plate, and the welding gun and the first clamping plate are arranged on the fourth sliding plates. And the second clamping plate is slidably arranged on the fourth sliding plate. The automatic welding device has the beneficial effects that automatic welding of the transformer oil conservator is achieved, and the production efficiency and quality of the transformer oil conservator are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding devices, in particular to an automatic welding device for a transformer oil pillow. BACKGROUND

[0002] In the power system, the transformer is the core equipment of power transmission and distribution, and its stable operation directly determines the power supply reliability and safety of the power grid. The normal operation of the transformer depends on the coordinated work of multiple key components, among which the transformer oil, as a core medium with insulation, cooling and arc extinguishing functions, its performance stability has a decisive influence on the service life and operation efficiency of the transformer. However, in the process of load fluctuation and environmental temperature change, the oil temperature will fluctuate significantly, and then cause the oil volume to expand or shrink. If there is no effective volume compensation mechanism, the internal pressure of the oil tank will change sharply, which may cause damage to the sealing structure, oil leakage and other faults, and at the same time, the moisture and impurities in the air will directly invade the oil tank, accelerating the deterioration of the transformer oil, and even causing major safety accidents such as insulation breakdown.

[0003] The oil pillow (also known as the oil storage tank) is an important accessory component of the transformer oil tank, and is a key device designed to solve the above problems. Its core function is to realize oil storage and oil compensation in the oil tank through dynamic volume adjustment: when the oil temperature rises and the oil expands, the excess oil flows into the oil pillow for storage; when the oil temperature drops and the oil shrinks, the oil in the oil pillow flows back to the oil tank, thereby always ensuring that the oil tank is full of oil and maintaining stable working pressure.

[0004] The main body of the transformer oil pillow is rolled from steel plates, and the butt joint longitudinal seam of the rolled steel plates is welded, and then a flange needs to be welded on the end thereof for connecting a flange cover, facilitating disassembly for cleaning the inside of the oil pillow, and a plurality of reinforcing plates need to be welded on the outside of the oil pillow to strengthen the strength of the oil pillow. At present, the welding of the flange and the reinforcing plate of the transformer oil pillow is generally performed manually by workers. However, the traditional manual welding process has the disadvantages of low automation degree, high labor intensity of workers, high requirement for the skill level of operators, low production efficiency, high scrap rate, etc., and is greatly affected by human factors, with unstable welding quality. SUMMARY

[0005] The present application aims to provide an automatic welding device for a transformer oil pillow, which realizes automatic welding of the transformer oil pillow, solves the problem of low efficiency of welding the transformer oil pillow, and improves the production efficiency and quality of the transformer oil pillow.

[0006] To achieve the above-mentioned purpose, the present application realizes the following technical solutions: An automatic welding device for transformer oil conservator includes a positioning fixture used in conjunction with the oil conservator and two sets of welding structures. The oil conservator includes a tank body, a reinforcing plate disposed on the outside of the tank body, and flanges disposed at both ends of the tank body. The positioning fixture includes a positioning plate that contacts the tank body and the flanges, and several arc-shaped plates that contact the tank body. A bushing is provided on one side of the positioning plate. A first sliding plate and a second sliding plate are slidably connected to the bushing. The device also includes several first connecting rods and second connecting rods. The two ends of the first connecting rods are rotatably connected to one end of the first sliding plate and one end of the arc-shaped plate, respectively. The two ends of the second connecting rods are rotatably connected to the other end of the second sliding plate and the arc-shaped plate, respectively. A first screw is rotatably connected to the bushing and threadedly connected to the first sliding plate and the second sliding plate. The thread on the first screw located at the first sliding plate is opposite to the thread located at the second sliding plate. The welding structure includes a base and a movable frame that slides on the base. A third sliding plate is slidably connected to the movable frame. Several fourth sliding plates are slidably connected to the third sliding plate. A welding torch and a first clamping plate are provided on the fourth sliding plate for use with an oil tank. A second clamping plate is slidably connected to the fourth sliding plate. The first clamping plate and the second clamping plate are in contact with the two sides of the flange or the two sides of the reinforcing plate, respectively. Furthermore, it also includes several buffer blocks that are slidably disposed at the ends of the arc-shaped plate. A guide rod that is slidably connected to the buffer block is provided on one side of the arc-shaped plate. A first spring is provided on the outside of the guide rod. The first spring is disposed between the buffer block and the arc-shaped plate. The first connecting rod and the second connecting rod are respectively rotatably connected to the two ends of the buffer block.

[0007] Furthermore, the arc-shaped plate is provided with a friction part that contacts the tank body.

[0008] Furthermore, the fourth slide plate is provided with a first cylinder, the movable end of the first cylinder is connected to one of the fourth slide plates, and an adjustment mechanism is provided between adjacent fourth slide plates. The adjustment mechanism includes a connecting plate provided on the fourth slide plate and a drive wheel rotatably provided on the adjacent fourth slide plate. The connecting plate is provided with a first rack and a limiting plate. The limiting plate is provided with a plurality of limiting grooves. The drive wheel is provided with a convex tooth that meshes with the first rack and a limiting wheel that contacts the limiting groove.

[0009] Furthermore, the fourth slide plate is rotatably connected to a shaft connected to a drive wheel, the end of the shaft is provided with a first bevel gear, the fourth slide plate is rotatably connected to a first spline shaft, the first spline shaft is provided with a second bevel gear meshing with the first bevel gear, the end of the first spline shaft is provided with a first connecting key, and the end adjacent to the first spline shaft is provided with a first keyway that slides in contact with the first connecting key. One of the fourth slide plates is provided with a first motor connected to the first spline shaft.

[0010] Furthermore, a fifth slide plate is slidably connected to the fourth slide plate. The fifth slide plate is provided with a push plate that contacts one side of the second clamping plate. The push plate is provided with a slide rod that is slidably connected to the second clamping plate. The end of the slide rod is provided with a fixing nut that contacts the other side of the second clamping plate. A second cylinder is provided on the fourth slide plate, and the movable end of the second cylinder is connected to the fifth slide plate.

[0011] Furthermore, a second spring is provided on the outer side of the slide bar, and the second spring is disposed between the second clamping plate and the push plate.

[0012] Furthermore, the push plate is slidably mounted on the fifth slide plate, and the fifth slide plate is provided with a second spline shaft that is threadedly connected to the push plate. The end of the second spline shaft is provided with a second connecting key, and the end of the adjacent second spline shaft is provided with a second keyway that slides in contact with the second connecting key. A second motor is provided on one of the second slide plates, and the movable end of the second motor is connected to one of the second spline shafts.

[0013] Furthermore, the base is provided with a guide rod that is slidably connected to the movable frame, and a fourth screw that is rotatably connected to the movable frame and threadedly connected to it. The base is provided with a fourth motor, the movable end of which is connected to the fourth screw. The movable frame is symmetrically provided with a third cylinder, the movable end of which is connected to a third slide plate.

[0014] Furthermore, the positioning plate is equipped with a speed reducer, and the movable end of the speed reducer is connected to the first screw.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the tank needs to be fixed, the first screw is rotated on the bushing. Since the thread on the first screw at the first sliding plate is opposite to the thread at the second sliding plate, the first and second sliding plates slide in opposite directions on the bushing. This, combined with the rotatable connection of the two ends of the first connecting rod to one end of the first sliding plate and one end of the arc plate, and the rotatable connection of the two ends of the second connecting rod to the other end of the second sliding plate and the arc plate, causes the arc plate to translate relative to the bushing until the side of the arc plate simultaneously contacts the tank. This better fixes the tank, improves the welding effect between the tank and the flange, and between the tank and the reinforcing plate, thereby improving the production quality of the transformer oil conservator. In addition, it can fix tanks with different inner diameters, thus enabling welding of different models of transformer oil conservators without the need to manufacture multiple sets of welding devices of different models, reducing the manufacturing cost of the welding device. 2. When welding transformer oil conservators is required, the third sliding plate on the movable frame moves the welding torch and the first clamping plate on the fourth sliding plate together until the welding torch is in contact with the tank. Then, several fourth sliding plates are simultaneously slid on the third sliding plate, moving the welding torch and the first clamping plate together until several first clamping plates are in contact with one side of the flange or one side of the reinforcing plate. At the same time, several welding torches are moved to the gap between the tank and the flange or reinforcing plate to achieve the positioning of the welding torch, thereby realizing automated welding of transformer oil conservators and improving the production quality of transformer oil conservators. Finally, the second clamping plate is slid on the fourth sliding plate, and several second clamping plates are in contact with the other side of the flange or the other side of the reinforcing plate to achieve the positioning of the flange and reinforcing plate on the tank. This avoids unintentional movement of the flange or reinforcing plate by external force, which would cause the flange or reinforcing plate to deviate from its original position or angle, thereby improving the stability of continuous production of transformer oil conservators and thus improving the production quality of transformer oil conservators. 3. After the welding torch is moved into position, the first screw is rotated further on the bushing. The screw makes contact with the first and second sliding plates through the threads on the first screw. The force applied by the contact between the two is transmitted to the arc plate through the first and second connecting rods, thereby strengthening the friction between the arc plate and the tank. This prevents the tank from being unintentionally pushed off its original position by external forces during the welding process, thereby improving the welding effect between the tank and the flange, as well as between the tank and the reinforcing plate, and improving the production quality of the transformer oil conservator. In addition, the resistance generated by the contact between the arc plate and the tank will limit the further movement of the first connecting rod, the second connecting rod, the first sliding plate and the second sliding plate. When the first screw is rotated further, the friction generated by the contact between the arc plate and the tank will drive the tank to rotate with the first screw, thereby realizing the automated welding between the tank and the flange, as well as between the tank and the reinforcing plate, without the need for manual welding. This reduces the labor intensity of workers, improves the production efficiency of transformer oil conservators, reduces the influence of human factors, and improves the welding quality of transformer oil conservators. 4. When the model of the transformer oil conservator changes, the starting position of the third slide plate can be adjusted by sliding the movable frame on the base to adapt to tanks with different outer diameters. The distance between adjacent fourth slide plates can be changed by sliding the fourth slide plate on the third slide plate, thereby enabling the welding of tanks of different lengths. This allows for the welding of transformer oil conservators of different models without the need to manufacture multiple sets of welding devices of different models, thus reducing the manufacturing cost of welding devices. Attached Figure Description

[0016] Appendix Figure 1 This is a schematic diagram of the structure of the tank body of the present invention.

[0017] Appendix Figure 2 This is a schematic diagram of the arc-shaped plate of the present invention.

[0018] Appendix Figure 3This is a schematic diagram of the structure of the buffer block of the present invention.

[0019] Appendix Figure 4 This is a schematic diagram of the structure of the third sliding plate of the present invention.

[0020] Appendix Figure 5 This is a schematic diagram of the convex tooth structure of the present invention.

[0021] Appendix Figure 6 This is a schematic diagram of the limiting wheel of the present invention.

[0022] Appendix Figure 7 This is a schematic diagram of the welding torch of the present invention.

[0023] Appendix Figure 8 This is a schematic diagram of the structure of the second clamping plate of the present invention.

[0024] Appendix Figure 9 This is a schematic diagram of the structure of the first connecting key of the present invention.

[0025] The labels shown in the attached diagram: 1. Tank body; 2. Reinforcing plate; 3. Flange; 4. Positioning plate; 5. Arc plate; 6. Bushing; 7. First sliding plate; 8. Second sliding plate; 9. First connecting rod; 10. Second connecting rod; 11. First screw; 12. Base; 13. Movable frame; 14. Third sliding plate; 15. Fourth sliding plate; 16. Welding torch; 17. First clamping plate; 18. Second clamping plate; 19. Buffer block; 20. Guide rod; 21. First spring; 22. Friction part; 23. First cylinder; 24. Connecting plate; 25. Drive wheel; 26. First rack; 27. Limiting plate; 28. Limiting groove; 29. ​​Protruding tooth; 30. Limiting wheel; 31. Rotating shaft; 32. First bevel gear; 33. First splined shaft; 34. Second bevel gear; 35. First connecting key; 36. First keyway; 37. First motor; 38. Fifth slide plate; 39. Push plate; 40. Slide rod; 41. Fixing nut; 42. Second cylinder; 43. Second spring; 44. Second splined shaft; 45. Second connecting key; 46. Second keyway; 47. Second motor; 48. Guide rod; 49. Fourth screw; 50. Fourth motor; 51. Third cylinder; 52. Reducer. Detailed Implementation

[0026] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined in this application.

[0027] This invention provides an automatic welding device for transformer oil conservators, such as... Figures 1-3 As shown, the device includes a positioning fixture used in conjunction with an oil conservator and two sets of welding structures. The oil conservator includes a tank body 1, a reinforcing plate 2 disposed on the outside of the tank body 1, and flanges 3 disposed at both ends of the tank body 1. The positioning fixture is used to fix the tank body 1. The two sets of welding structures respectively realize the welding of the flanges 3 and the two sides of the reinforcing plate 2. The positioning fixture includes a positioning plate 4 that contacts the tank body 1 and the flanges 3, and several arc-shaped plates 5 that contact the tank body 1. A bushing 6 is provided on one side of the positioning plate 4. A first sliding plate 7 and a second sliding plate 8 are slidably connected to the bushing 6. It also includes several first connecting rods 9 and second connecting rods 10. The two ends of the first connecting rods 9 are rotatably connected to one end of the first sliding plate 7 and one end of the arc-shaped plate 5, respectively. The two ends of the second connecting rods 10 are rotatably connected to the other end of the second sliding plate 8 and the arc-shaped plate 5, respectively. A first screw 11 that is threadedly connected to the first sliding plate 7 and the second sliding plate 8 is rotatably connected to the bushing 6. The threads on the first screw 11 at the first sliding plate 7 are opposite to those at the second sliding plate 8. This causes the first sliding plate 7 and the second sliding plate 8 to slide in opposite directions on the bushing 6 when the first screw 11 is rotated on the bushing 6. This, combined with the fact that the two ends of the first connecting rod 9 are rotatably connected to one end of the first sliding plate 7 and one end of the arc plate 5, and the two ends of the second connecting rod 10 are rotatably connected to the other end of the second sliding plate 8 and the arc plate 5, drives the arc plate 5 to translate relative to the bushing 6 until the side of the arc plate 5 simultaneously contacts the tank 1. This better fixes the tank 1, improves the welding effect between the tank 1 and the flange 3, and between the tank 1 and the reinforcing plate 2, and thus improves the production quality of the transformer oil conservator. In addition, it can fix tanks 1 with different inner diameters, thereby enabling welding of different models of transformer oil conservators without the need to manufacture multiple sets of welding devices of different models, reducing the manufacturing cost of the welding device. After the welding torch 16 moves into position, the first screw 11 is further rotated on the bushing 6. The screw 11 then comes into contact with the first sliding plate 7 and the second sliding plate 8 through the threads on the first screw 11. The force applied by the contact between the two is transmitted to the arc plate 5 through the first connecting rod 9 and the second connecting rod 10, thereby strengthening the friction between the arc plate 5 and the tank 1. This prevents the tank 1 from being unintentionally pushed off its original position by external forces during the welding process, thereby improving the welding effect between the tank 1 and the flange 3, as well as between the tank 1 and the reinforcing plate 2, and improving the production quality of the transformer oil conservator. In addition, since the arc plate 5 is in contact with the tank 1, the resulting resistance will limit the further movement of the first connecting rod 9, the second connecting rod 10, the first sliding plate 7 and the second sliding plate 8. When the first screw 11 is rotated further, the friction generated by the contact between the arc plate 5 and the tank 1 will drive the tank 1 to rotate with the first screw 11, thereby realizing the automated welding between the tank 1 and the flange 3, as well as between the tank 1 and the reinforcing plate 2, without the need for manual welding. This reduces the labor intensity of workers, improves the production efficiency of transformer oil conservators, reduces the influence of human factors, and improves the welding quality of transformer oil conservators. The welding structure includes a base 12 and a movable frame 13 that slides on the base 12. A third sliding plate 14 is slidably connected to the movable frame 13, and several fourth sliding plates 15 are slidably connected to the third sliding plate 14. Each fourth sliding plate 15 is equipped with a welding torch 16 and a first clamping plate 17 for use with the transformer oil conservator. A second clamping plate 18 is slidably connected to the fourth sliding plate 15. The first clamping plate 17 and the second clamping plate 18 respectively contact the two sides of the flange 3 or the two sides of the reinforcing plate 2. When welding is required on the transformer oil conservator, the welding torch 16 and the first clamping plate 17 on the fourth sliding plate 15 are moved together by sliding the third sliding plate 14 on the movable frame 13 until the welding torch 16 moves to the point where it will contact the tank body 1. Then, several fourth sliding plates 15 simultaneously slide on the third sliding plate 14. The welding torch 16 and the first clamping plate 17 move together until several first clamping plates 17 contact one side of the flange 3 or the reinforcing plate 2. At the same time, several welding torches 16 move to the gap between the tank body 1 and the flange 3 or the reinforcing plate 2, thus positioning the welding torches 16 and achieving automated welding of the transformer oil conservator, improving the production quality of the transformer oil conservator. Finally, the second clamping plate 18 slides on the fourth sliding plate 15. Several second clamping plates 18 contact the other side of the flange 3 or the other side of the reinforcing plate 2, thus positioning the flange 3 and the reinforcing plate 2 on the tank body 1. This prevents external forces from unintentionally moving the flange 3 or the reinforcing plate 2, causing the flange 3 or the reinforcing plate 2 to deviate from its original position or angle, thereby improving the stability of continuous production of transformer oil conservators and thus improving the production quality of transformer oil conservators. In addition, when the model of the transformer oil conservator changes, the starting position of the third slide plate 14 can be adjusted by sliding the movable frame 13 on the base 12 to adapt to tanks 1 with different outer diameters. The distance between adjacent fourth slide plates 15 can be changed by sliding the fourth slide plate 15 on the third slide plate 14, thereby enabling the welding of tanks 1 of different lengths. This allows for the welding of transformer oil conservators of different models without the need to manufacture multiple welding devices of different models, thus reducing the manufacturing cost of the welding device. Preferred, such as 2 and Figure 3As shown, it also includes several buffer blocks 19 slidably disposed at the ends of the arc-shaped plate 5. A guide rod 20 is provided on one side of the arc-shaped plate 5 and slidably connected to the buffer block 19. A first spring 21 is provided on the outer side of the guide rod 20. The first spring 21 is disposed between the buffer block 19 and the arc-shaped plate 5. The first connecting rod 9 and the second connecting rod 10 are rotatably connected to the two ends of the buffer block 19, respectively. The rebound force generated after the first spring 21 is compressed absorbs the external force acting on the tank 1, preventing the external force from unintentionally causing the tank 1 to move, thereby ensuring the stability of the continuous welding of the transformer oil conservator and improving the production quality of the transformer oil conservator. In addition, the rebound force generated after the first spring 21 is compressed will act on the arc-shaped plate 5, further increasing the friction between the arc-shaped plate 5 and the tank 1, further ensuring the stability of the continuous welding of the transformer oil conservator and improving the production quality of the transformer oil conservator.

[0028] Preferred, such as Figure 3 As shown, the arc-shaped plate 5 is provided with a friction part 22 that contacts the tank body 1, which further increases the friction between the arc-shaped plate 5 and the tank body 1, further ensuring the stability of continuous welding of the transformer oil conservator and improving the production quality of the transformer oil conservator.

[0029] Preferred, such as Figures 4-8 As shown, the fourth slide plate 15 is equipped with a first cylinder 23. The movable end of the first cylinder 23 is connected to one of the fourth slide plates 15. An adjustment mechanism is provided between adjacent fourth slide plates 15. The adjustment mechanism includes a connecting plate 24 provided on the fourth slide plate 15 and a drive wheel 25 rotatably provided on the adjacent fourth slide plate 15. The connecting plate 24 is equipped with a first rack 26 and a limiting plate 27. The limiting plate 27 is equipped with a plurality of limiting grooves 28. The drive wheel 25 is equipped with a tooth 29 that meshes with the first rack 26 and a limiting wheel 30 that contacts the limiting grooves 28. When the welding torch 16 is moved normally to the weld seam, or when the first clamping plate 17 is moved to contact the flange 3 or the reinforcing plate 2, the first cylinder 23 drives the first... The four sliding plates 15 move, causing the welding torches 16 and the first clamping plates 17 to move together. This allows several of the first clamping plates 17 to contact one side of the flange 3 or the reinforcing plate 2, while several welding torches 16 move to the gap between the tank body 1 and the flange 3 or the reinforcing plate 2, thus positioning the welding torches 16. This achieves automated welding of transformer oil conservators and improves the production quality of transformer oil conservators. In addition, the second clamping plate 18 contacts the other side of the flange 3 or the other side of the reinforcing plate 2, positioning the flange 3 and the reinforcing plate 2 on the tank body 1. This prevents external forces from unintentionally moving the flange 3 or the reinforcing plate 2, causing the flange 3 or the reinforcing plate 2 to deviate from its original position or angle, thereby improving the stability of continuous production of transformer oil conservators and thus improving the production quality of transformer oil conservators. When the transformer model changes, the drive wheel 25, which is set on several fourth slide plates 15, is rotated, causing the tooth 29 on the drive wheel 25 and the limiting wheel 30 to rotate together. This causes the limiting wheel 30 to slide out of the corresponding limiting groove 28, releasing the limitation of the limiting wheel 30 on the relative sliding of adjacent fourth slide plates 15. Then, the tooth 29 meshes with the first rack 26 on the adjacent fourth slide plate 15, causing the adjacent fourth slide plate 15 to slide relative to the fourth slide plate 15. This changes the distance between adjacent fourth slide plates 15 at the same time, enabling the welding of tanks 1 of different lengths. This allows for the welding of transformer oil conservators of different models without the need to manufacture multiple sets of welding devices of different models, reducing the manufacturing cost of the welding device. In addition, after each drive of the fourth slide plate 15 to move relative to each other, the limit wheel 30 re-engages with the corresponding limit groove 28 to restrict the relative sliding of adjacent fourth slide plates 15, thereby preventing external forces from unintentionally changing the spacing between one set of adjacent fourth slide plates 15, affecting the subsequent fixing and welding of the corresponding reinforcing plate 2 or flange 3, and thus improving the quality of transformer oil conservator production.

[0030] Preferred, such as Figure 4 , Figure 5 , Figure 6 and Figure 9 As shown, a rotating shaft 31 connected to a drive wheel 25 is rotatably connected to the fourth slide plate 15. A first bevel gear 32 is provided at the end of the rotating shaft 31. A first splined shaft 33 is rotatably connected to the fourth slide plate 15. A second bevel gear 34 meshes with the first bevel gear 32 on the first splined shaft 33. A first connecting key 35 is provided at the end of the first splined shaft 33. A first keyway 36 that slides in contact with the first connecting key 35 is provided at the end of an adjacent first splined shaft 33. A first motor 37 connected to the first splined shaft 33 is provided on one of the fourth slide plates 15. When the first motor 37 drives one of the first splined shafts 33 to rotate, the first connecting key 35 at the end of one of the first splined shafts 33 slides in contact with the adjacent first splined shaft 33. The keyway 33 has a first keyway 36 that makes sliding contact, so that the torque generated by the rotation of one of the first spline shafts 33 is transmitted to the subsequent first spline shafts 33 in sequence, driving the corresponding second bevel gear 34 to rotate on the third slide plate 14, and transmitting torque through the corresponding first bevel gear and the rotating shaft 31, thereby simultaneously driving several drive wheels 25 to rotate on the fourth slide plate 15, while adjusting the spacing between adjacent fourth slide plates 15 to ensure that the spacing between the fourth slide plates 15 is always consistent, thereby ensuring that the reinforcing plate 2 is evenly arranged on the side of the tank body 1, further improving the production quality of the transformer oil conservator. In addition, there is no need to set up a separate power unit to drive it, thereby reducing the space required for power unit installation and the cost required for manufacturing, and reducing the programming difficulty of controlling the power unit.

[0031] Preferred, such asFigure 7 and Figure 8 As shown, a fifth slide plate 38 is slidably connected to the fourth slide plate 15. The fifth slide plate 38 is provided with a push plate 39 that contacts one side of the second clamping plate 18. The push plate 39 is provided with a slide rod 40 that is slidably connected to the second clamping plate 18. The end of the slide rod 40 is provided with a fixing nut 41 that contacts the other side of the second clamping plate 18. The fourth slide plate 15 is provided with a second cylinder 42. The movable end of the second cylinder 42 is connected to the fifth slide plate 38. When it is necessary to fix the flange 3 and the reinforcing plate 2, the second cylinder 42 pushes the fifth slide plate 38 to slide to the right, which drives the push plate 39 to move to the right as well. The push plate 39 contacts one side of the second clamping plate 18, which drives it to move as well until the second clamping plate 18 contacts the flange 3 or the reinforcing plate 2, thereby fixing the flange 3 and the reinforcing plate 2. This prevents the flange 3 or the reinforcing plate 2 from being moved unintentionally by external force, which would cause the flange 3 or the reinforcing plate 2 to deviate from its original position or angle. This improves the stability of continuous production of transformer oil conservators and thus improves the production quality of transformer oil conservators. After welding is completed, the second cylinder 42 drives the fifth slide plate 38 to move in the opposite direction, and the fixing nut 41 contacts the other side of the second clamping plate 18, thereby driving the second clamping plate 18 to move in the opposite direction, realizing the loosening of the flange 3 or the reinforcing plate 2, which facilitates the subsequent removal of the welded structure and the fixing of the subsequent flange 3 or the reinforcing plate 2, further improving the quality of transformer oil conservator production.

[0032] Preferred, such as Figure 4 , Figure 7 and Figure 8 As shown, a second spring 43 is provided on the outer side of the slide bar 40. The second spring 43 is located between the second clamping plate 18 and the push plate 39. When the fifth slide plate 38 moves the push plate 39 together, the push plate 39 contacts the second spring 43. The rebound force generated after the spring 43 is compressed acts on the second clamping plate 18, causing the second clamping plate 18 to move together with the push plate 39 until the second clamping plate 18 contacts the flange 3 or the reinforcing plate 2. Then, when the push plate 39 is moved further, the second spring 43 will be further compressed. The rebound force generated after the second spring 43 is compressed acts on the flange 3 or the fixed plate through the second clamping plate 18, thereby offsetting the external force acting on the flange 3 or the fixed plate. This further prevents the external force from unintentionally moving the flange 3 or the reinforcing plate 2, causing the flange 3 or the reinforcing plate 2 to deviate from its original position or angle, improving the stability of continuous production of transformer oil conservator, and thus improving the production quality of transformer oil conservator.

[0033] Preferred, such as Figure 4 , Figure 7 and Figure 8As shown, the push plate 39 is slidably mounted on the fifth slide plate 38. The fifth slide plate 38 is provided with a second splined shaft 44 threadedly connected to the push plate 39. The end of the second splined shaft 44 is provided with a second connecting key 45. The end of the adjacent second splined shaft 44 is provided with a second keyway 46 that slides in contact with the second connecting key 45. A second motor 47 is provided on one of the second slide plates 8. The movable end of the second motor 47 is connected to one of the second splined shafts 44. When the thickness of the flange 3 or the reinforcing plate 2 changes, the second motor 47 drives one of the second splined shafts 44 to rotate, and the generated torque is transmitted through... The transmission is transferred to the adjacent second spline shaft 44 through the cooperation of the second connecting key 45 and the second keyway 46, thereby simultaneously driving several second spline shafts 44 to rotate together. At the same time, since the second spline shaft 44 is threadedly connected to the push plate 39, several push plates 39 are simultaneously driven to slide on the fifth slide plate 38, thereby changing the end position of the push plate 39 and fixing the flange 3 and the reinforcing plate 2 of different thicknesses. This further avoids the flange 3 or the reinforcing plate 2 from being moved unintentionally by external forces, causing the flange 3 or the reinforcing plate 2 to deviate from its original position or angle, thereby improving the stability of continuous production of transformer oil conservator and thus improving the production quality of transformer oil conservator.

[0034] Preferred, such as Figure 1 and Figure 4 As shown, the base 12 is provided with a guide rod 48 that is slidably connected to the movable frame 13, and a fourth screw 49 that is rotatably connected to the movable frame 13 and threadedly connected to it. The guide rod 48 guides the movable frame 13 as it slides. The base 12 is provided with a fourth motor 50, the movable end of which is connected to the fourth screw 49. The movable frame 13 is symmetrically provided with a third cylinder 51, the movable end of which is connected to a third slide plate 14. Specifically, the fourth motor 50 can be a stepper motor, thereby improving the accuracy of adjusting the initial position of the welding torch 16 and improving the production quality of different types of transformer oil conservators. In addition, by using the third cylinder 51 to drive the welding torch 16 to its position, the cost of the power unit can be reduced. At the same time, only the position of the cylinder position sensor needs to be adjusted to ensure that the welding torch 16 moves to its position, without the need for complex programming to achieve precise positioning, further improving the production efficiency of different types of transformer oil conservators.

[0035] Preferred, such as Figure 1 and Figure 2 As shown, the positioning plate 4 is equipped with a reducer 52, and the movable end of the reducer 52 is connected to the first screw 11 to provide power for the positioning and rotation of the tank 1.

[0036] Example 1 This invention provides an automatic welding device for transformer oil conservators, such as... Figures 1-4As shown, when it is necessary to fix the tank body 1, the first screw 11 is rotated on the bushing 6. Since the thread on the first screw 11 located at the first sliding plate 7 is opposite to the thread located at the second sliding plate 8, the first sliding plate 7 and the second sliding plate 8 slide in opposite directions on the bushing 6. With the two ends of the first connecting rod 9 respectively rotatably connected to one end of the first sliding plate 7 and one end of the arc plate 5, and the two ends of the second connecting rod 10 respectively rotatably connected to the other end of the second sliding plate 8 and the arc plate 5, the arc plate 5 is driven to translate relative to the bushing 6 until the side of the arc plate 5 simultaneously contacts the tank body 1, thereby better fixing the tank body 1, improving the welding effect between the tank body 1 and the flange 3, and between the tank body 1 and the reinforcing plate 2, and thus improving the production quality of the transformer oil conservator. In addition, it can fix tank bodies 1 with different inner diameters, thereby realizing the welding of different models of transformer oil conservators without manufacturing multiple sets of welding devices of different models, reducing the manufacturing cost of welding devices. When welding is required on the transformer oil conservator, the third sliding plate 14 is slid on the movable frame 13, which moves the welding torch 16 and the first clamping plate 17 on the fourth sliding plate 15 together until the welding torch 16 is about to contact the tank body 1. Then, several fourth sliding plates 15 are slid on the third sliding plate 14 at the same time, which moves the welding torch 16 and the first clamping plate 17 together until several first clamping plates 17 respectively contact one side of the flange 3 or one side of the reinforcing plate 2. At the same time, several welding torches 16 are moved to the gap between the tank body 1 and the flange 3 or the reinforcing plate 2. The welding torch 16 is positioned to achieve automated welding of transformer oil conservators, thereby improving the production quality of transformer oil conservators. Finally, the second clamping plate 18 slides on the fourth sliding plate 15. Through the contact of several second clamping plates 18 with the other side of the flange 3 or the other side of the reinforcing plate 2, the flange 3 and the reinforcing plate 2 are positioned on the tank body 1. This avoids the flange 3 or the reinforcing plate 2 being moved unintentionally by external forces, which would cause the flange 3 or the reinforcing plate 2 to deviate from its original position or angle. This improves the stability of continuous production of transformer oil conservators and thus improves the production quality of transformer oil conservators. After the welding torch 16 moves into position, the first screw 11 is further rotated on the bushing 6. The screw 11 then comes into contact with the first sliding plate 7 and the second sliding plate 8 through the threads on the first screw 11. The force applied by the contact between the two is transmitted to the arc plate 5 through the first connecting rod 9 and the second connecting rod 10, thereby strengthening the friction between the arc plate 5 and the tank 1. This prevents the tank 1 from being unintentionally pushed off its original position by external forces during the welding process, thereby improving the welding effect between the tank 1 and the flange 3, as well as between the tank 1 and the reinforcing plate 2, and improving the production quality of the transformer oil conservator. In addition, since the arc plate 5 is in contact with the tank 1, the resulting resistance will limit the further movement of the first connecting rod 9, the second connecting rod 10, the first sliding plate 7 and the second sliding plate 8. When the first screw 11 is rotated further, the friction generated by the contact between the arc plate 5 and the tank 1 will drive the tank 1 to rotate with the first screw 11, thereby realizing the automated welding between the tank 1 and the flange 3, as well as between the tank 1 and the reinforcing plate 2, without the need for manual welding. This reduces the labor intensity of workers, improves the production efficiency of transformer oil conservators, reduces the influence of human factors, and improves the welding quality of transformer oil conservators. Furthermore, when the model of the transformer oil conservator changes, the starting position of the third slide plate 14 can be adjusted by sliding the movable frame 13 on the base 12 to accommodate tanks 1 with different outer diameters. The distance between adjacent fourth slide plates 15 can be changed by sliding the fourth slide plate 15 on the third slide plate 14, thereby enabling the welding of tanks 1 of different lengths. This allows for the welding of transformer oil conservators of different models without the need to manufacture multiple sets of welding devices of different models, thus reducing the manufacturing cost of the welding device.

[0037] Example 2 Based on Example 1, such as Figure 2 and Figure 3 As shown, when it is necessary to fix the tank 1, the reducer 52 drives the first screw 11 to rotate on the bushing 6, which drives the first slide plate 7 and the second slide plate 8 to move. Since the first connecting rod 9 and the second connecting rod 10 are rotatably connected to the buffer block 19, the buffer block 19 and the arc plate 5 will be moved outward together until the friction part 22 on one side of the arc plate 5 contacts the tank 1, restricting the arc plate 5 from moving further. Then, when the first screw 11 is rotated further, the buffer block will be moved further relative to the arc plate 5, compressing the first spring 21 between the buffer block and the arc plate 5, and the arc plate 5 will be moved through the guide rod 20. When the first spring 21 is compressed to a certain extent, when the first screw 11 is rotated further, the tank 1 will be rotated, realizing the rotational welding of the transformer oil conservator. In addition, the rebound force generated by the compression of the first spring 21 absorbs the external force acting on the tank 1, preventing the external force from unintentionally causing the tank 1 to move, thereby ensuring the stability of continuous welding of the transformer oil tank and improving the production quality of the transformer oil tank. In addition, the rebound force generated by the compression of the first spring 21 will act on the arc plate 5, further increasing the friction between the arc plate 5 and the tank 1, further ensuring the stability of the continuous welding of the transformer oil conservator and improving the production quality of the transformer oil conservator.

[0038] Example 3 Based on Example 2, such as Figures 4-9As shown, when the welding torch 16 is moved to the weld seam and the first clamping plate 17 is moved to contact the flange 3 or the reinforcing plate 2, the first cylinder 23 drives the fourth sliding plate 15 to move, which in turn moves the welding torch 16 and the first clamping plate 17 together. This allows several first clamping plates 17 to contact one side of the flange 3 or the reinforcing plate 2, while several welding torches 16 move to the gap between the tank body 1 and the flange 3 or the reinforcing plate 2, thus positioning the welding torch 16 and achieving automated welding of the transformer oil conservator, improving the production quality of the transformer oil conservator. In addition, the second clamping plate 18 contacts the other side of the flange 3 or the other side of the reinforcing plate 2, positioning the flange 3 and the reinforcing plate 2 on the tank body 1. This prevents external forces from unintentionally moving the flange 3 or the reinforcing plate 2, causing the flange 3 or the reinforcing plate 2 to deviate from its original position or angle, thereby improving the stability of continuous production of the transformer oil conservator and thus improving the production quality of the transformer oil conservator. When the transformer model changes, the first motor 37 drives one of the first spline shafts 33 to rotate. Since the first connecting key 35 at the end of one of the first spline shafts 33 slides in contact with the first keyway 36 of the adjacent first spline shaft 33, the torque generated by the rotation of one of the first spline shafts 33 is sequentially transmitted to the subsequent first spline shafts 33. This drives the corresponding second bevel gear 34 to rotate on the third slide plate 14, and transmits torque through the corresponding first bevel teeth and the rotating shaft 31. Simultaneously, this drives several drive wheels 25 to rotate on the fourth slide plate 15, causing the convex teeth 29 on the drive wheels 25 and the limiting wheels 30 to rotate together. This causes the limiting wheels 30 to slide out of their corresponding limiting grooves 28, releasing the restriction of the limiting wheels 30 on the relative sliding of adjacent fourth slide plates 15. Then, through the convex teeth 29 and the adjacent… The first rack 26 on the fourth slide plate 15 meshes with the fourth slide plate 15, causing the adjacent fourth slide plates 15 to slide relative to each other, thereby changing the distance between the adjacent fourth slide plates 15 simultaneously. This enables the welding of tanks 1 of different lengths, and thus the welding of transformer oil conservators of different models. This eliminates the need to manufacture multiple welding devices of different models, reducing the manufacturing cost of the welding device. In addition, by simultaneously driving several drive wheels 25 to rotate, the distance between the adjacent fourth slide plates 15 can be adjusted at the same time, ensuring that the distance between the fourth slide plates 15 is always consistent. This ensures that the reinforcing plates 2 are evenly distributed on the side of the tank 1, further improving the production quality of the transformer oil conservator. Furthermore, there is no need to set up a separate power unit for driving, thereby reducing the space required for power unit installation and the cost of manufacturing the power unit, while also reducing the programming difficulty of controlling the power unit. In addition, after each drive of the fourth slide plate 15 to move relative to each other, the limit wheel 30 re-engages with the corresponding limit groove 28 to restrict the relative sliding of adjacent fourth slide plates 15, thereby preventing external forces from unintentionally changing the spacing between one set of adjacent fourth slide plates 15, affecting the subsequent fixing and welding of the corresponding reinforcing plate 2 or flange 3, and thus improving the quality of transformer oil conservator production.

[0039] Example 4 Based on Example 2, such as Figure 7 and Figure 8 As shown, when it is necessary to fix flange 3 and reinforcing plate 2, the fifth sliding plate 38 is pushed to the right by the second cylinder 42. The thread of the second spline shaft 44 contacts the push plate 39, which moves the push plate 39 to the right. This compresses the second spring 43 between the push plate 39 and the second clamping plate 18. The rebound force generated by the compression of the second spring 43 acts on the second clamping plate 18, thereby moving the second clamping plate 18 with the push plate 39 until the second clamping plate 18 contacts flange 3 or reinforcing plate 2. When the push plate 39 is moved further, the second spring 43 is further compressed. The rebound force generated by the compression of the second spring 43 acts on flange 3 or fixing plate through the second clamping plate 18, thereby offsetting the external force acting on flange 3 or fixing plate. This further prevents external force from unintentionally moving flange 3 or reinforcing plate 2, causing flange 3 or reinforcing plate 2 to deviate from its original position or angle, improving the stability of continuous production of transformer oil conservator, and thus improving the production quality of transformer oil conservator. After welding is completed, the fifth slide plate 38 is moved in the opposite direction by the second cylinder 42 and comes into contact with the other side of the second clamping plate 18 by the fixing nut 41, thereby moving the second clamping plate 18 in the opposite direction, realizing the loosening of the flange 3 or the reinforcing plate 2, which facilitates the subsequent return of the welded structure and the fixing of the subsequent flange 3 or the reinforcing plate 2, further improving the quality of transformer oil conservator production. Furthermore, when the thickness of flange 3 or reinforcing plate 2 changes, the second motor 47 drives one of the second spline shafts 44 to rotate. The torque generated is transmitted to the adjacent second spline shafts 44 through the cooperation of the second connecting key 45 and the second keyway 46, thereby simultaneously driving several second spline shafts 44 to rotate together. Since the second spline shafts 44 are threadedly connected to the push plate 39, several push plates 39 are simultaneously driven to slide on the fifth slide plate 38, thereby changing the end position of the push plate 39. This achieves the fixation of flanges 3 and reinforcing plates 2 of different thicknesses, further preventing external forces from unintentionally causing flanges 3 or reinforcing plates 2 to move, causing flanges 3 or reinforcing plates 2 to deviate from their original position or angle, improving the stability of continuous production of transformer oil conservators, and thus improving the production quality of transformer oil conservators.

Claims

1. An automatic welding device for a transformer oil pillow, comprising a positioning tool used in cooperation with an oil pillow and two groups of welding structures, the oil pillow comprising a tank body (1), a reinforcing plate (2) arranged outside the tank body (1), and flanges (3) arranged at both ends of the tank body (1), characterized in that: The positioning tool comprises a positioning plate (4) in contact with the tank body (1) and the flange (3), and a plurality of arc-shaped plates (5) in contact with the tank body (1), one side of the positioning plate (4) is provided with a shaft sleeve (6), the shaft sleeve (6) is slidably connected with a first sliding plate (7) and a second sliding plate (8), further comprising a plurality of first connecting rods (9) and second connecting rods (10), both ends of the first connecting rod (9) are rotatably connected with the first sliding plate (7) and one end of the arc-shaped plate (5) respectively, both ends of the second connecting rod (10) are rotatably connected with the second sliding plate (8) and the other end of the arc-shaped plate (5) respectively, the shaft sleeve (6) is rotatably connected with a first screw rod (11) threadedly connected with the first sliding plate (7) and the second sliding plate (8), the thread on the first screw rod (11) at the first sliding plate (7) is opposite to the thread at the second sliding plate (8); The welding structure comprises a base (12) and a movable frame (13) sliding on the base (12), the movable frame (13) is slidably connected with a third sliding plate (14), the third sliding plate (14) is slidably connected with a plurality of fourth sliding plates (15), the fourth sliding plate (15) is provided with a welding gun (16) and a first clamping plate (17) used in cooperation with the oil pillow, the fourth sliding plate (15) is slidably connected with a second clamping plate (18), the first clamping plate (17) and the second clamping plate (18) are in contact with the two sides of the flange (3) or the two sides of the reinforcing plate (2) respectively.

2. An automatic welding device for transformer oil pillow according to claim 1, characterized in that: Further comprising a plurality of buffer blocks (19) slidably arranged at the end of the arc-shaped plate (5), one side of the arc-shaped plate (5) is provided with a guide rod (20) slidably connected with the buffer block (19), the outer side of the guide rod (20) is provided with a first spring (21), the first spring (21) is arranged between the buffer block (19) and the arc-shaped plate (5), the first connecting rod (9) and the second connecting rod (10) are rotatably connected with both ends of the buffer block (19) respectively.

3. An automatic welding device for transformer oil pillow according to claim 1, characterized in that: The arc-shaped plate (5) is provided with a friction part (22) in contact with the tank body (1).

4. An automatic welding device for transformer oil pads as claimed in claim 1, characterized in that: The fourth sliding plate (15) is provided with a first air cylinder (23), the movable end of the first air cylinder (23) is connected with one of the fourth sliding plates (15), an adjusting mechanism is arranged between adjacent fourth sliding plates (15), the adjusting mechanism comprises a connecting plate (24) arranged on the fourth sliding plate (15) and a driving wheel (25) rotatably arranged on the adjacent fourth sliding plate (15), the connecting plate (24) is provided with a first rack (26) and a limiting plate (27), the limiting plate (27) is provided with a plurality of limiting grooves (28), the driving wheel (25) is provided with a convex tooth (29) engaged with the first rack (26) and a limiting wheel (30) in contact with the limiting groove (28).

5. An automatic welding device for transformer oil pads as claimed in claim 4, characterized in that: The fourth sliding plate (15) is rotatably connected with a rotating shaft (31) connected with a driving wheel (25), the end of the rotating shaft (31) is provided with a first bevel gear (32), the fourth sliding plate (15) is rotatably connected with a first spline shaft (33), the first spline shaft (33) is provided with a second bevel gear (34) engaged with the first bevel gear (32), the end of the first spline shaft (33) is provided with a first connecting key (35), the end of the adjacent first spline shaft (33) is provided with a first key groove (36) in sliding contact with the first connecting key (35), and one of the fourth sliding plates (15) is provided with a first motor (37) connected with the first spline shaft (33).

6. An automatic welding device for transformer oil pads as claimed in claim 1, characterized in that: The fourth sliding plate (15) is slidably connected with a fifth sliding plate (38), the fifth sliding plate (38) is provided with a push plate (39) in contact with one side of the second clamping plate (18), the push plate (39) is provided with a sliding rod (40) slidably connected with the second clamping plate (18), the end of the sliding rod (40) is provided with a fixed nut (41) in contact with the other side of the second clamping plate (18), the fourth sliding plate (15) is provided with a second cylinder (42), and the movable end of the second cylinder (42) is connected with the fifth sliding plate (38).

7. An automatic welding device for transformer oil pads as claimed in claim 6, characterized in that: The outer side of the sliding rod (40) is provided with a second spring (43), and the second spring (43) is arranged between the second clamping plate (18) and the push plate (39).

8. An automatic welding device for transformer oil pads as claimed in claim 7, characterized in that: The push plate (39) is slidably arranged on the fifth sliding plate (38), the fifth sliding plate (38) is provided with a second spline shaft (44) threadedly connected with the push plate (39), the end of the second spline shaft (44) is provided with a second connecting key (45), the end of the adjacent second spline shaft (44) is provided with a second key groove (46) in sliding contact with the second connecting key (45), and one of the second sliding plates (8) is provided with a second motor (47), and the movable end of the second motor (47) is connected with one of the second spline shafts (44).

9. An automatic welding device for transformer oil pads as claimed in claim 1, characterized in that: The base (12) is provided with a guide rod (48) slidably connected with the movable frame (13), and a fourth screw rod (49) rotatably connected with the movable frame (13), the base (12) is provided with a fourth motor (50), the movable end of the fourth motor (50) is connected with the fourth screw rod (49), and the movable frame (13) is symmetrically provided with a third cylinder (51), and the movable end of the third cylinder (51) is connected with the third sliding plate (14).

10. An automatic welding device for transformer oil pads as claimed in claim 1, wherein: The positioning plate (4) is provided with a speed reducer (52), and the movable end of the speed reducer (52) is connected with the first screw rod (11).

Images