Split type energy-saving direct current converter transformer

Abstract

The invention relates to the technical field of direct-current converter transformers, and discloses a split type energy-saving direct-current converter transformer which comprises an installation unit and an anti-falling unit. Wherein the mounting unit comprises two transverse stretcher frames, a transformer main body is arranged on the top surfaces of the two transverse stretcher frames, two fastening screw rods are arranged at the two ends of each transverse stretcher frame, and two fixing nuts in threaded connection with the fastening screw rods are fixedly mounted at the two ends of each transverse stretcher frame. In the hoisting process, the anti-falling arc plates at the two ends and the anti-falling wheels in the anti-falling arc plates are attached to the outer wall of the electric pole, so that the stability and the positioning accuracy of the whole structure during upward movement are ensured, shaking in the hoisting process is effectively avoided, and more importantly, under the condition that the whole structure falls due to accidents, the safety of the whole structure is improved. The device can automatically trigger a locking mechanism, friction force is increased through a series of mechanical transmission, the falling speed is reduced, and time is won for taking rescue measures manually.

Description

Technical Field

[0001] The present invention relates to the technical field of direct current converter transformers, and in particular to a split energy-saving direct current converter transformer. Background Art

[0002] The split-type energy-saving DC converter transformer is a DC converter transformer that combines a split design with energy-saving technology. It is mainly used in high-voltage DC transmission (HVDC) systems to achieve conversion between AC and DC power while optimizing equipment energy consumption and operating efficiency. The split-type energy-saving DC converter transformer is an important development direction for future DC transmission systems. Its split design combined with energy-saving technology not only improves the transportation, installation and maintenance efficiency of the equipment, but also significantly reduces energy consumption and operating costs.

[0003] During the installation of split-type energy-saving DC converter transformers, especially when lifting them to the specified height on the pole, hoisting is commonly used. While this method improves installation efficiency to a certain extent, it also carries significant safety risks. Because the height, position, and posture of the transformer must be precisely controlled during hoisting operations, improper operation or the influence of external environmental factors (such as wind and the stability of the hoisting equipment) can cause the transformer to accidentally come into contact with the power transmission lines above during the ascent. This contact can not only cause direct failures such as damage to the transformer casing and short circuits in internal components, but can also lead to more serious consequences such as line tripping, large-scale power outages, and even casualties and property damage, posing a serious threat to the stable operation of the power system.

[0004] Therefore, it is necessary to design a split-type energy-saving DC converter transformer to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a split energy-saving DC converter transformer.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] Split energy-saving DC converter transformer, including a mounting unit and an anti-fall unit;

[0008] The mounting unit includes two cross stretchers, the top surfaces of the two cross stretchers are provided with a transformer body, two fastening screws are provided at both ends of the two cross stretchers, two fixing nuts threadedly connected to the fastening screws are fixedly installed at both ends of the two cross stretchers, and a limiting structure is provided between two fastening screws located on the same side of the four fastening screws;

[0009] The anti-fall unit comprises two rotating plates symmetrically arranged on the bottom surfaces of the two cross stretchers, a fixing frame is fixedly installed on the bottom surface of the rotating plate, a shaft is rotatably installed on the inner wall of the fixing frame, a support plate is fixedly sleeved on the shaft, and an anti-fall arc plate is fixedly installed on the end of the support plate away from the shaft;

[0010] Wherein, a driving structure is provided between the rotating plate and the two cross stretchers, and a guide assembly is provided on the inner wall of the anti-fall arc plate;

[0011] One end of the shaft passes through the side of the fixing frame, and a locking assembly is provided on the outer wall of the shaft.

[0012] As a preferred technical solution of the present invention, the limiting structure includes four guide rings that are respectively threaded onto the outer walls of the two ends of the two fastening screws. The outer walls of the four guide rings are fixedly installed with support rods, and the bottom ends of the two support rods located on the same side of the four support rods are fixedly installed with limiting half-hoops.

[0013] As a preferred technical solution of the present invention, the inner walls of the two limiting half hoops are both set to be semicircular, both ends of the limiting half hoops are provided with installation openings, and the thread directions of the two ends of the fastening screw are opposite.

[0014] As a preferred technical solution of the present invention, the driving structure includes an adjusting screw rotatably installed on the bottom end of a cross stretcher, and a guide rod is fixedly installed on the bottom end of the other cross stretcher of the two cross stretchers. A guide plate is slidably mounted on the guide rod, and the guide plate is threadedly connected to the adjusting screw, and the top surface of the rotating plate is rotatably connected to the bottom surface of the guide plate.

[0015] As a preferred technical solution of the present invention, a crank plug is fixedly installed on one end of the adjusting screw located on the outside of the cross stretcher.

[0016] As a preferred technical solution of the present invention, the guide assembly includes three equally spaced brackets fixedly mounted on the inner wall of the anti-fall arc plate, the inner walls of the three brackets are rotatably mounted with anti-fall wheels, the inner wall of the anti-fall arc plate is symmetrically fixed with two vertical plates, both ends of the three anti-fall wheels and the sides of the two vertical plates are fixedly mounted with universal joints, connecting rods are fixedly mounted between each of several universal joints, driving bevel gears are rotatably mounted on the sides of the two vertical plates, and the driving bevel gears are fixedly connected to a universal joint located at the end, and two transmission shafts are symmetrically provided through the inner wall of the anti-fall arc plate, and the ends of the two transmission shafts are fixedly mounted with driven bevel gears, and the driven bevel gears are meshed with the driving bevel gears.

[0017] As a preferred technical solution of the present invention, the bottom of the inner wall of the anti-arc falling plate is provided with anti-slip grooves, and the outer wall of the anti-arc falling plate is symmetrically fixedly mounted with two mounting plates.

[0018] As a preferred technical solution of the present invention, the locking assembly includes a fixing box fixedly mounted on the side of the fixing frame, and the end of the shaft located on the outside of the fixing frame passes through the fixing box, the outer wall of the shaft located on the inner side of the fixing box is fixedly sleeved with a ratchet, the inner wall of the fixing box is rotatably mounted with a rotating shaft, a pawl is fixedly sleeved on the rotating shaft, and the pawl is engaged with the ratchet, the end of the rotating shaft is sleeved with a torsion spring, and the two ends of the torsion spring are respectively fixedly connected to the fixing box and the rotating shaft.

[0019] As a preferred technical solution of the present invention, one end of the shaft located outside the fixed box is connected to the transmission shaft through a sprocket and a chain.

[0020] As a preferred technical solution of the present invention, the end of the fastening screw away from the fixing nut is configured to be hexagonal.

[0021] The present invention has the following beneficial effects:

[0022] 1. By setting up anti-fall arc plates and anti-fall wheels, during the hoisting process, the anti-fall arc plates at both ends and the anti-fall wheels inside fit with the outer wall of the pole, ensuring the stability and positioning accuracy of the overall structure when moving upward, effectively avoiding shaking during the hoisting process. More importantly, in the event of an accident causing the entire structure to fall, the device can automatically trigger the locking mechanism, increase friction through a series of mechanical transmissions, slow down the falling speed, and buy time for manual rescue measures;

[0023] 2. By setting up ratchet and pawl, once a fall occurs, the system not only relies on the friction between the anti-fall wheel and the pole to slow down, but also has mechanical locking devices such as one-way bearings and ratchet mechanisms. This allows the anti-fall arc plate to increase friction by using anti-slip grooves while pressing the pole, thereby achieving double protection and greatly improving the safety of the equipment.

[0024] 3. By setting up the turning plate and adjusting screw, the staff can tighten the fastening screw to clamp the two cross stretchers to the pole, and use the limiting half hoop to further reinforce it to ensure the stable installation of the transformer body and the cross stretcher. In addition, the design of the adjusting screw, guide plate and turning plate allows for easy adjustment of the position of the distribution box, and fast and firm fixation is achieved through bolts and mounting plates. The entire installation process is simple and efficient, while ensuring the reliability of the final installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the three-dimensional structure of the split energy-saving DC converter transformer proposed in this invention Figure 1;

[0026] Figure 2 Schematic diagram of the three-dimensional structure of the split energy-saving DC converter transformer proposed in this invention Figure 2 ;

[0027] Figure 3 This is a schematic diagram of the cross stretcher structure of the split energy-saving DC converter transformer proposed in the present invention;

[0028] Figure 4 This is a schematic diagram of the fastening screw and limiting half hoop structure of the split energy-saving DC converter transformer proposed in the present invention;

[0029] Figure 5 This is a schematic diagram of the guide plate and rotating plate structure of the split energy-saving DC converter transformer proposed in the present invention;

[0030] Figure 6 This is a schematic structural diagram of the arc-drop prevention plate of the split energy-saving DC converter transformer proposed in the present invention;

[0031] Figure 7 for Figure 6 A in the middle is an enlarged structural diagram;

[0032] Figure 8 for Figure 6 The enlarged structural diagram at B in the middle;

[0033] Figure 9 This is a schematic diagram of the internal structure of the fixing box of the split energy-saving DC converter transformer proposed in the present invention.

[0034] In the figure: 11. Cross stretcher; 12. Transformer body; 13. Fastening screw; 14. Fixing nut; 21. Guide ring; 22. Support rod; 23. Limiting half hoop; 24. Mounting port; 31. Adjusting screw; 32. Guide rod; 33. Guide plate; 34. Turn plate; 35. Fixing frame; 36. Shaft; 37. Support plate; 38. Anti-fall arc plate; 39. Crank plug; 41. Bracket; 42. Anti-fall wheel; 43. Universal joint; 44. Connecting rod; 45. Vertical plate; 46. Driving bevel gear; 47. Transmission shaft; 48. Driven bevel gear; 49. Mounting plate; 51. Fixing box; 52. Ratchet; 53. Rotating shaft; 54. Pawl; 55. Torsion spring. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] Reference Figure 1-9, split-type energy-saving DC converter transformer, including a mounting unit and an anti-fall unit;

[0037] The mounting unit includes two cross stretchers 11, the top surfaces of the two cross stretchers 11 are provided with a transformer body 12, and two fastening screws 13 are provided at both ends of the two cross stretchers 11. The thread directions of the two ends of the fastening screws 13 are opposite, and two fixing nuts 14 threadedly connected to the fastening screws 13 are fixedly installed at both ends of the two cross stretchers 11. The end of the fastening screw 13 away from the fixing nut 14 is set to be hexagonal, and a limiting structure is provided between the two fastening screws 13 on the same side of the four fastening screws 13.

[0038] The limiting structure includes four guide rings 21 that are respectively threadedly mounted on the outer walls of the two ends of the two fastening screws 13. The outer walls of the four guide rings 21 are fixedly mounted with support rods 22. The bottom ends of two support rods 22 located on the same side of the four support rods 22 are fixedly mounted with limiting semi-hoops 23. The inner walls of the two limiting semi-hoops 23 are both semicircular, and both ends of the limiting semi-hoops 23 are provided with mounting openings 24.

[0039] The staff can install the two cross stretchers 11 on the outside of the two poles so that the two poles are located on the inner sides of the two ends of the two cross stretchers 11 respectively, and then install the transformer body 12 on the top surfaces of the two cross stretchers 11 and connect the transformer body 12 to the lifting equipment. Then the staff tightens the fastening screws 13 so that the two cross stretchers 11 are close to each other and fit the outer walls of the poles, but not in a clamped state. After the whole is hoisted into place normally, the staff can first manually tighten the fastening screws 13 at both ends so that the two cross stretchers 11 can clamp the two poles to play a fixing role. Since the thread directions of the two ends of the fastening screw 13 are opposite, and the guide ring 21 is screwed to the fastening screw 13, when the fastening screw 13 rotates, the two limiting half hoop rings 23 can move in the direction of approaching each other and be clamped on the outer wall of the pole. The staff then fixes the two limiting half hoop rings 23 through the mounting opening 24 with bolts to achieve fixed installation of the cross stretcher 11 and the transformer body 12.

[0040] Reference Figure 1 、 Figure 3 、 Figure 5 、 Figure 6 The anti-fall unit includes two rotating plates 34 symmetrically arranged on the bottom surfaces of the two cross stretchers 11. A fixing frame 35 is fixedly installed on the bottom surface of the rotating plate 34. A shaft 36 is rotatably installed on the inner wall of the fixing frame 35. A support plate 37 is fixedly sleeved on the shaft 36. An anti-fall arc plate 38 is fixedly installed on the end of the support plate 37 away from the shaft 36. The bottom of the inner wall of the anti-fall arc plate 38 is provided with anti-slip grooves. A driving structure is provided between the rotating plate 34 and the two cross stretchers 11.

[0041] The drive structure includes an adjusting screw 31 rotatably mounted on the bottom end of one cross stretcher 11. A guide rod 32 is fixedly mounted on the bottom end of the other cross stretcher 11. A guide plate 33 is slidably mounted on the guide rod 32. The guide plate 33 is threadedly connected to the adjusting screw 31. The top surface of a rotating plate 34 is rotatably connected to the bottom surface of the guide plate 33. A crank plug 39 is fixedly mounted on the end of the adjusting screw 31 located outside the cross stretcher 11.

[0042] When the pole is hoisted, the inner walls of the two anti-fall arc plates 38 at both ends can fit with the outer wall of the pole, and the outer walls of the anti-fall wheels 42 on the inner walls of the anti-fall arc plates 38 fit with the outer wall of the pole, so the whole can be hoisted. During the overall hoisting process, the transformer body 12 and the cross stretcher 11 move upward, and the anti-fall arc plates 38 at both ends can climb and move upward along the pole. Since the anti-fall wheels 42 on the inner walls of the anti-fall arc plates 38 fit with the outer wall of the pole, the anti-fall arc plates 38 at both ends can position the whole during the overall hoisting, avoiding shaking during the hoisting process and ensuring the stability of the hoisting. After the installation is completed, the staff can plug the crank into the crank plug 39 and drive it to shake. When the plug 39 is rotated, the adjusting screw 31 can be driven to rotate, and one end of the guide plate 33 is slidably connected to the guide rod 32, and the other end is screwed to the adjusting screw 31. Therefore, when the adjusting screw 31 is rotated, the guide plate 33 can be driven to slide, so that the two guide plates 33 at both ends can slide toward each other. After the guide plates 33 are in place, the staff can rotate the rotating plate 34 so that the two anti-arc plates 38 can be rotated to a relative state. At this time, the staff can place the distribution box between the two opposite anti-arc plates 38, and the side of the distribution box can be fitted with the side of the anti-arc plate 38. The distribution box can be fixed by bolts and mounting plates 49 to complete the overall installation of the transformer.

[0043] Reference Figure 6 、 Figure 7 、 Figure 8The inner wall of the anti-fall arc plate 38 is provided with a guide assembly, which includes three brackets 41 fixedly mounted on the inner wall of the anti-fall arc plate 38 and distributed at equal intervals. The inner walls of the three brackets 41 are rotatably mounted with anti-fall wheels 42, and the inner wall of the anti-fall arc plate 38 is symmetrically fixed with two vertical plates 45. Both ends of the three anti-fall wheels 42 and the sides of the two vertical plates 45 are fixedly mounted with universal joints 43, and connecting rods 44 are fixedly mounted between two of the universal joints 43. The sides of the two vertical plates 45 are rotatably mounted with driving bevel gears 46, and the driving bevel gear 46 is fixedly connected to a universal joint 43 at the end. The inner wall of the anti-fall arc plate 38 is symmetrically penetrated by two transmission shafts 47, and the ends of the two transmission shafts 47 are fixedly mounted with driven bevel gears 48, and the driven bevel gear 48 is meshed with the driving bevel gear 46. The outer wall of the anti-fall arc plate 38 is symmetrically fixed with two mounting plates 49;

[0044] If the entire vehicle falls downward unexpectedly during the hoisting process, the anti-fall arc plate 38 moves upward and the anti-fall wheel 42 rotates on the inner side of the bracket 41, which drives the driving bevel gear 46 to rotate through the universal joint 43 and the connecting rod 44. The driving bevel gear 46 meshes with the driven bevel gear 48, and then drives the driven bevel gear 48 and the transmission shaft 47 to rotate. The end of the transmission shaft 47 is equipped with a sprocket through a one-way bearing, and the sprocket is connected to the sprocket at the end of the shaft rod 36 through a chain transmission. The rotation direction of this transmission shaft 47 is the free state of the one-way bearing. Therefore, when the transmission shaft 47 rotates, it cannot drive the shaft rod 36 to rotate through the sprocket chain. The shaft rod 36, the support plate 37 and the anti-fall arc plate 38 are in a free state. The arc falling plate 38 is in a stable state, and when the anti-arc falling plate 38 falls, the rotation direction of the anti-fall wheel 42 is opposite, and the one-way bearing is in a locked state. Therefore, when the transmission shaft 47 rotates, the sprocket can be driven to rotate, and the shaft rod 36, the support plate 37, and the anti-arc falling plate 38 are driven by the chain to rotate along the fixing frame 35 toward the pole, so that the anti-arc falling plate 38 presses the pole. When the anti-arc falling plate 38 presses the pole, the friction between the two increases sharply under the action of the anti-slip grooves, and at this time the pole can press the anti-fall wheel 42, so that the anti-fall wheel 42 cannot rotate. The combination of the two effects ensures that the overall fall will generate a larger friction force, slowing down the overall fall speed so that human response can take rescue measures.

[0045] Reference Figure 6 、 Figure 9One end of the shaft 36 passes through the side of the fixing frame 35, and the outer wall of the shaft 36 is provided with a locking assembly, which includes a fixing box 51 fixedly mounted on the side of the fixing frame 35, and the end of the shaft 36 located on the outside of the fixing frame 35 passes through the fixing box 51, and the outer wall of the shaft 36 located on the inner side of the fixing box 51 is fixedly sleeved with a ratchet 52, and the inner wall of the fixing box 51 is rotatably mounted with a rotating shaft 53, and a pawl 54 is fixedly sleeved on the rotating shaft 53, and the pawl 54 is engaged with the ratchet 52, and the end of the rotating shaft 53 is sleeved with a torsion spring 55, and the two ends of the torsion spring 55 are respectively fixedly connected to the fixing box 51 and the rotating shaft 53, and the end of the shaft 36 located on the outside of the fixing box 51 is connected to the transmission shaft 47 through a sprocket and a chain, and the sprocket is sleeved on the end of the transmission shaft 47 through a one-way bearing;

[0046] During the rotation of the shaft 36, the shaft 36 can drive the ratchet 52 in the fixed box 51 to rotate, and during this rotation process, the pawl 54 can give way under the action of the torsion spring 55. After the rotation is completed, the pawl 54 can engage with the ratchet 52, ensuring that the shaft 36 cannot be reversed, and plays a limiting role on the support plate 37 and the anti-fall arc plate 38.

[0047] The specific working principle of the present invention is as follows:

[0048] When in use, the staff can first install the two cross stretchers 11 on the outside of the two poles so that the two poles are located on the inside of the two ends of the two cross stretchers 11, and then install the transformer body 12 on the top surface of the two cross stretchers 11, and connect the transformer body 12 to the lifting equipment. The transformer body 12 contains a voltage regulating winding with a wide voltage regulating range (such as ±20%-30%) and a small adjustment amount per gear (1%-2%), which needs to be coordinated with the commutator bridge trigger control. Then the staff tightens the fastening screw 13 so that the two cross stretchers 11 are close to each other and fit the outer wall of the pole, but are not clamped. State, in this state, the inner walls of the two anti-fall arc plates 38 at both ends can fit with the outer wall of the pole, and the outer walls of the anti-fall wheels 42 on the inner walls of the anti-fall arc plates 38 fit with the outer wall of the pole, and the whole can be hoisted. During the overall hoisting process, the transformer body 12 and the cross stretcher 11 move upward. At this time, the anti-fall arc plates 38 at both ends can climb and move upward along the pole. Since the anti-fall wheels 42 on the inner walls of the anti-fall arc plates 38 fit with the outer wall of the pole, the anti-fall arc plates 38 at both ends can position the whole during the overall hoisting, avoiding shaking during the hoisting process and ensuring the stability of the hoisting.

[0049] The anti-fall arc plate 38 is in a stable state when the anti-fall arc plate 38 moves upward and the anti-fall wheel 42 rotates on the inner side of the bracket 41, and the driving bevel gear 46 can be driven to rotate through the universal joint 43 and the connecting rod 44, and the driving bevel gear 46 is meshed with the driven bevel gear 48, thereby driving the driven bevel gear 48 and the transmission shaft 47 to rotate. The end of the transmission shaft 47 is provided with a sprocket through a one-way bearing, and the sprocket and the sprocket at the end of the shaft rod 36 are connected by a chain transmission, and the rotation direction of the transmission shaft 47 is the free state of the one-way bearing. Therefore, when the transmission shaft 47 rotates, it cannot drive the shaft rod 36 to rotate through the sprocket chain, and the shaft rod 36, the support plate 37 and the anti-fall arc plate 38 are in a stable state. When the anti-fall arc plate 38 falls, the rotation direction of the anti-fall wheel 42 is opposite, and the one-way bearing is in a locked state. The driven sprocket rotates and drives the shaft rod 36, the support plate 37 and the anti-fall arc plate 38 to rotate along the fixing frame 35 in the direction close to the electric pole through the chain. During the rotation of the shaft rod 36, the shaft rod 36 can drive the ratchet 52 in the fixing box 51 to rotate, and during this rotation process, the ratchet 54 can give way under the action of the torsion spring 55. After the rotation is completed, the ratchet 54 can engage with the ratchet 52 to ensure that the shaft rod 36 cannot be reversed, and the support plate 37 and the anti-fall arc plate 38 have a limiting effect, so that the anti-fall arc plate 38 presses the electric pole. When the anti-fall arc plate 38 presses the electric pole, the friction between the two increases sharply under the action of the anti-slip grooves, and at this time the electric pole can press the anti-fall wheel 42 so that the anti-fall wheel 42 cannot rotate. The combination of the two effects ensures that the overall falling will produce a large friction force, slowing down the overall falling speed so that human response can take rescue measures.

[0050] After the whole is hoisted into place normally, the staff can first manually tighten the fastening screws 13 at both ends, so that the two cross stretchers 11 can clamp the two poles to fix them. Since the thread directions of the two ends of the fastening screw 13 are opposite, and the guide ring 21 is screwed to the fastening screw 13, the two limiting half hoop rings 23 can move towards each other when the fastening screw 13 rotates and clamp them on the outer wall of the pole. The staff then fixes the two limiting half hoop rings 23 through the installation opening 24 with bolts to achieve fixed installation of the cross stretcher 11 and the transformer body 12. After the installation is completed, the staff can plug the crank into the crank plug 39 and drive it. When the adjusting screw 31 is rotated, one end of the guide plate 33 is slidably connected to the guide rod 32, and the other end is screwed to the adjusting screw 31. Therefore, when the adjusting screw 31 is rotated, the guide plate 33 can be driven to slide, so that the two guide plates 33 at both ends can slide toward each other. After the guide plates 33 are in place, the staff can rotate the rotating plate 34 so that the two anti-fall arc plates 38 can be rotated to a relative state. At this time, the staff can place the distribution box between the two opposite anti-fall arc plates 38, and the side of the distribution box can be fitted with the side of the anti-fall arc plate 38. The distribution box can be fixed by bolts and the mounting plate 49 to complete the overall installation of the transformer.

[0051] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. Split type energy-saving DC converter transformer, characterized in that: Including installation unit and anti-fall unit; The installation unit comprises two cross stretchers (11), the top surfaces of the two cross stretchers (11) are provided with a transformer body (12), two fastening screws (13) are provided at both ends of the two cross stretchers (11), two fixing nuts (14) threadedly connected to the fastening screws (13) are fixedly installed at both ends of the two cross stretchers (11), and a limiting structure is provided between two fastening screws (13) located on the same side of the four fastening screws (13); The anti-falling unit comprises two rotating plates (34) symmetrically arranged on the bottom surfaces of the two cross stretchers (11), a fixing frame (35) is fixedly installed on the bottom surface of the rotating plate (34), a shaft (36) is rotatably installed on the inner wall of the fixing frame (35), a support plate (37) is fixedly sleeved on the shaft (36), and an anti-falling arc plate (38) is fixedly installed on one end of the support plate (37) away from the shaft (36); Wherein, a driving structure is provided between the rotating plate (34) and the two cross stretchers (11), and a guide assembly is provided on the inner wall of the anti-fall arc plate (38); One end of the shaft (36) passes through the side of the fixing frame (35), and a locking assembly is provided on the outer wall of the shaft (36).

2. The split energy-saving DC converter transformer according to claim 1, characterized in that: The limiting structure comprises four guide rings (21) respectively threadedly mounted on the outer walls of both ends of the two fastening screw rods (13); the outer walls of the four guide rings (21) are all fixedly mounted with support rods (22); and the bottom ends of two support rods (22) located on the same side of the four support rods (22) are fixedly mounted with limiting half hoop rings (23).

3. The split energy-saving DC converter transformer according to claim 2, characterized in that: The inner walls of the two limiting half hoop rings (23) are both arranged in a semicircular shape. Both ends of the limiting half hoop rings (23) are provided with mounting openings (24). The thread directions of the two ends of the fastening screw rod (13) are opposite.

4. The split energy-saving DC converter transformer according to claim 1, characterized in that: The driving structure includes an adjusting screw (31) rotatably mounted on the bottom end of a cross stretcher (11), a guide rod (32) is fixedly mounted on the bottom end of the other cross stretcher (11) of the two cross stretchers (11), a guide plate (33) is slidably mounted on the guide rod (32), and the guide plate (33) is screwed to the adjusting screw (31), and the top surface of the rotating plate (34) is rotatably connected to the bottom surface of the guide plate (33).

5. The split energy-saving DC converter transformer according to claim 4, characterized in that: One end of the adjusting screw rod (31) located outside the cross stretcher (11) is fixedly mounted with a crank plug (39).

6. The split energy-saving DC converter transformer according to claim 1, characterized in that: The guide assembly comprises three brackets (41) fixedly mounted on the inner wall of the anti-fall arc plate (38) and distributed at equal intervals, the inner walls of the three brackets (41) are all rotatably mounted with anti-fall wheels (42), the inner wall of the anti-fall arc plate (38) is symmetrically fixed with two vertical plates (45), both ends of the three anti-fall wheels (42) and the sides of the two vertical plates (45) are all fixedly mounted with universal joints (43), and each of the plurality of universal joints (43) is connected to the other. A connecting rod (44) is fixedly installed, and the sides of the two vertical plates (45) are rotatably installed with a driving bevel gear (46), and the driving bevel gear (46) is fixedly connected to a universal joint (43) located at the end. The inner wall of the anti-fall arc plate (38) is symmetrically penetrated by two transmission shafts (47), and the ends of the two transmission shafts (47) are fixedly installed with a driven bevel gear (48), and the driven bevel gear (48) is meshed with the driving bevel gear (46).

7. The split energy-saving DC converter transformer according to claim 6, characterized in that: The bottom of the inner wall of the anti-fall arc plate (38) is provided with anti-slip grooves, and the outer wall of the anti-fall arc plate (38) is symmetrically fixedly mounted with two mounting plates (49).

8. The split energy-saving DC converter transformer according to claim 6, characterized in that: The locking assembly comprises a fixing box (51) fixedly mounted on the side of the fixing frame (35), and one end of the shaft (36) located on the outside of the fixing frame (35) passes through the fixing box (51), the outer wall of the shaft (36) located on the inner side of the fixing box (51) is fixedly sleeved with a ratchet (52), the inner wall of the fixing box (51) is rotatably mounted with a rotating shaft (53), a pawl (54) is fixedly sleeved on the rotating shaft (53), and the pawl (54) is engaged with the ratchet (52), the end of the rotating shaft (53) is sleeved with a torsion spring (55), and the two ends of the torsion spring (55) are respectively fixedly connected to the fixing box (51) and the rotating shaft (53).

9. The split energy-saving DC converter transformer according to claim 8, characterized in that: One end of the shaft rod (36) located outside the fixed box (51) is connected to the transmission shaft (47) through a sprocket and a chain transmission.

10. The split energy-saving DC converter transformer according to claim 1, characterized in that: One end of the fastening screw (13) away from the fixing nut (14) is configured to be hexagonal.

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