Low-noise oil-immersed transformer

Abstract

The invention discloses a low-noise oil-immersed transformer, and relates to the field of transformers, the low-noise oil-immersed transformer comprises an oil-immersed transformer, L-shaped bottom plates are fixed at four corners of the bottom of the oil-immersed transformer, mounting seats are arranged below the four L-shaped bottom plates, and a noise reduction fixing mechanism is arranged in each mounting seat; the noise reduction fixing mechanism is used for conducting rapid installation, shock absorption and noise reduction on the oil-immersed transformer, the noise reduction fixing mechanism is composed of a clamping assembly, a plug-in fixing assembly and two sets of connecting rods, the plug-in fixing assembly is connected with the clamping assembly through the connecting rods, and the clamping assembly is used for clamping and fixing the two sides of the L-shaped bottom plate. According to the invention, rainwater is effectively prevented from being in direct contact with a metal part, the weather resistance is improved, the service life is prolonged, meanwhile, a transmission path of vibration can be further blocked, vibration and noise from a transformer are effectively isolated and absorbed, and the low-noise performance is better maintained.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of transformers, and in particular to a low-noise oil-immersed transformer. Background Art

[0002] In the context of the electrification era, transformers, as core components, are widely used in household appliances and high-tech electronic equipment. There are many types of transformers, and oil-immersed transformers are one of them. Oil-immersed transformers use oil as a cooling medium and have the advantages of excellent heat dissipation performance, low manufacturing and maintenance costs, and easy recycling. They are particularly suitable for outdoor and relatively harsh environments.

[0003] A low-noise oil-immersed transformer described in the prior art includes a C-shaped support beam, a transformer body, and a noise reduction component. The noise reduction component includes a mounting plate, a damping pad is fixedly installed on the bottom of the mounting plate, a limiting threaded rod is fixedly connected to the bottom of the mounting plate and near the damping pad, a first locking nut is threadedly connected to the outer surface of the limiting threaded rod, a second locking nut is threadedly connected to the outer surface of the limiting threaded rod and near the first locking nut, a plug-in component is provided at the bottom edge of the mounting plate, the plug-in component includes a plug-in pressing tooth, a wedge block is fixedly connected to the bottom of the outer surface of the plug-in pressing tooth, and a connecting slot is provided on the outer surface of the wedge block and on the side away from the plug-in pressing tooth.

[0004] Although the above technology can achieve the effect of reducing noise, weakening vibration, reducing vibration amplitude, reducing noise, and not easily loosening, in actual application, the bolts and nuts used for fixing are easily affected by ambient temperature and erosion by rainwater, causing chemical reactions, leading to rust and loss of strength, affecting the stability of the overall structure and the noise reduction effect. Summary of the Invention

[0005] Based on this, an object of the present invention is to provide a low-noise oil-immersed transformer to solve the technical problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A low-noise oil-immersed transformer, comprising an oil-immersed transformer, wherein L-shaped bottom plates are fixed to the four corners of the bottom of the oil-immersed transformer, mounting seats are provided below the four L-shaped bottom plates, and a noise reduction fixing mechanism is provided inside each mounting seat. The noise reduction fixing mechanism is used to quickly install the oil-immersed transformer and reduce vibration and noise. A square through-hole is provided at the top of each mounting seat, and the bottom end of each L-shaped bottom plate is inserted into the square through-hole. Both sides of the bottom end of each L-shaped bottom plate are provided with guiding inclined surfaces, and the bottom of each L-shaped bottom plate is symmetrically provided with fixing through-holes. The noise reduction fixing mechanism consists of a clamping assembly, a plug-in fixing assembly and two sets of connecting rods. The plug-in fixing assembly is connected to the clamping assembly through the connecting rod. The clamping assembly is used to clamp and fix the two sides of the L-shaped base plate. The plug-in fixing assembly is used to adjust the position by following the movement of the clamping assembly through the connecting rod, and the plug-in fixing assembly is used to accurately plug the fixing through-holes of the L-shaped base plate to ensure a stable installation.

[0007] The present technical solution is specific, the clamping assembly includes a guide slide rod, both ends of the guide slide rod are fixedly connected to the inner side wall of the mounting seat, and sliding blocks are slidably installed on the outer walls of both ends of the guide slide rod, and clamping blocks are fixed on the top of the two sliding blocks, and the top of the two clamping blocks close to the L-shaped bottom plate is set as a driven inclined surface, and the driven inclined surface cooperates with the guide inclined surface, and the two clamping blocks are provided with a slot on the side that contacts the side wall of the L-shaped bottom plate, and the slot is tightly fitted with the side wall of the L-shaped bottom plate.

[0008] Specifically, the two clamping blocks are connected to the inner wall of the mounting seat on one side away from the side wall of the L-shaped bottom plate through a reset spring, and the two ends of each reset spring are fixedly connected to the side wall of the clamping block and the inner wall of the mounting seat respectively, and the bottom ends of the two sliding blocks are embedded with a number of balls.

[0009] Specifically, the outer wall of the middle section of the guide slide rod is fixedly sleeved with three support plates, the top ends of the three support plates are fixed with abutment plates, the upper surface of the abutment plates is bonded with a first damping pad, the first damping pad is in close contact with the bottom surface of the L-shaped bottom plate, and the bottom ends of the three support plates are fixedly connected to the inner bottom wall of the mounting seat.

[0010] Specifically, the plug-in fixing assembly includes a movable plate and two fixed blocks, the two fixed blocks are fixedly connected to the inner wall of the mounting seat, a side support plate is fixed on the side of the movable plate close to the fixed block, and a plug-in rod is symmetrically fixed on the side of the side support plate away from the movable plate, the two plug-in rods are plug-in connected to the fixed through-holes, and the top and bottom ends of the movable plate are in contact with and slidably connected to the inner top wall and inner bottom wall of the mounting seat.

[0011] Specifically, the second damping pads are bonded to one side of the two fixing blocks close to the end of the plug rod, and the two second damping pads are in close contact with the end faces of the two plug rods respectively.

[0012] Specifically, the present technical solution is provided with two groups of symmetrical grooves on both sides of the movable plate, the sliding block and the clamping block provided in the clamping assembly and the side of the movable plate away from the fixed block are fixed with connecting seats, and the two ends of the two groups of connecting rods are respectively movably connected to the connecting seats through shafts, and each of the grooves matches the connecting rod.

[0013] Specifically, the bottom ends of the four mounting seats are symmetrically fixed with bolts, and the four mounting seats are connected by two telescopic rods. The two telescopic rods are respectively fixed to the outer wall of one mounting seat by screws, and the telescopic ends of the two telescopic rods are respectively fixed to the outer wall of another mounting seat by screws.

[0014] Specifically, the interior of each mounting seat is provided with three support rods on one side of the plug-in fixing component, the top and bottom ends of each support rod are respectively fixedly connected to the inner top wall and inner bottom wall of the mounting seat, and the top end of each mounting seat is located below the top of the L-shaped bottom plate and a third damping pad is bonded thereto.

[0015] Specifically, the two inner side walls of the square through-hole are bonded with flexible filling blocks, and the two flexible filling blocks are in close contact with the two bottom surfaces of the L-shaped bottom plate.

[0016] In summary, the present invention has the following beneficial effects: a closed environment is formed by the mounting base and the internal noise reduction fixing mechanism. After the L-shaped bottom plate is inserted, the gap is filled by the flexible filling block, which can effectively block the entry of external rainwater and effectively prevent direct contact with metal parts, thereby improving weather resistance and service life. It can also further block the transmission path of vibration, reduce the spread of noise, and enhance the overall noise reduction effect. At the same time, the dual locking action of the clamping assembly and the plug-in fixing assembly, as well as the provision of multiple damping pads, ensures the stability of the L-shaped base plate during installation, preventing instability caused by loose connectors after long-term use. Even when the ambient temperature changes and the components expand and contract due to heat, the structural integrity can be maintained, and the vibration and noise from the transformer can be effectively isolated and absorbed, thereby better maintaining low-noise performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the positive axis side of the transformer of the present invention; Figure 2 It is a schematic diagram of the side structure of the transformer of the present invention; Figure 3 This is a schematic diagram of the L-shaped base plate and the mounting base of the present invention; Figure 4 Schematic diagram of the cross-sectional structure of the mounting base of the present invention; Figure 5 For the present invention Figure 4 Side view structural diagram; Figure 6 This is a schematic diagram of the noise reduction fixing mechanism and the L-shaped bottom plate on the positive axis side of the present invention; Figure 7 This is a schematic diagram of the noise reduction fixing mechanism and the oblique axis side structure of the L-shaped bottom plate of the present invention; Figure 8 This is a schematic diagram of the L-shaped bottom plate structure of the present invention; Figure 9 It is a structural schematic diagram of the noise reduction fixing mechanism of the present invention.

[0018] Description of the drawings: 1. Oil-immersed transformer; 101. L-shaped base plate; 102. Fixed through-hole; 103. Guide slope; 2. Mounting seat; 201. Telescopic rod; 202. Square through-hole; 203. Flexible filling block; 204. Support rod; 205. Bolt; 206. Third damping pad; 3. Noise reduction fixing mechanism; 4. Clamping assembly; 401. Guide slide rod; 402. Support plate; 403. Abutment plate; 4031. First damping pad; 404. Clamping block; 4041. Slot; 4042. Follower slope; 405. Sliding block; 406. Return spring; 5. Plug-in fixing assembly; 501. Moving plate; 502. Side support plate; 5021. Plug-in rod; 503. Fixed block; 5031. Second damping pad; 6. Connecting rod; 601. Connecting seat; 602. Groove. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0020] The following describes an embodiment of the present invention based on its overall structure.

[0021] In this embodiment, please refer to Figures 1-8 As shown, a low-noise oil-immersed transformer includes an oil-immersed transformer 1, wherein L-shaped bottom plates 101 are fixed to the four corners of the bottom of the oil-immersed transformer 1, and mounting seats 2 are provided under the four L-shaped bottom plates 101. A noise reduction fixing mechanism 3 is provided inside each mounting seat 2, and the noise reduction fixing mechanism 3 is used to quickly install the oil-immersed transformer 1 and reduce vibration and noise. A square through-hole 202 is provided at the top of each mounting seat 2, and the bottom end of each L-shaped bottom plate 101 is inserted into the square through-hole 202. Flexible filling blocks 203 are bonded to the two inner side walls of the square through-hole 202. The two flexible filling blocks 203 are in close contact with the two sides of the bottom of the L-shaped bottom plate 101, and both sides of the bottom end of each L-shaped bottom plate 101 are provided with guiding inclined surfaces 103, and the bottom of each L-shaped bottom plate 101 is symmetrically provided with fixing through-holes 102. The bottom ends of the four mounting seats 2 are symmetrically fixed with bolts 205, and the four mounting seats 2 are connected by two telescopic rods 201. The two telescopic rods 201 are respectively fixed to the outer wall of one mounting seat 2 by screws, and the telescopic ends of the two telescopic rods 201 are respectively fixed to the outer wall of another mounting seat 2 by screws. Three support rods 204 are provided on one side of the plug-in fixing component 5 inside each mounting seat 2. The top and bottom ends of each support rod 204 are respectively fixedly connected to the inner top wall and inner bottom wall of the mounting seat 2. The top of each mounting seat 2 is located below the top of the L-shaped bottom plate 101 and is bonded with a third damping pad 206; The noise reduction fixing mechanism 3 is composed of a clamping component 4, a plug-in fixing component 5 and two sets of connecting rods 6. The plug-in fixing component 5 is connected to the clamping component 4 through the connecting rod 6. The clamping component 4 is used to clamp and fix the two sides of the L-shaped base plate 101. The plug-in fixing component 5 is used to adjust the position by following the movement of the clamping component 4 through the connecting rod 6, and the plug-in fixing component 5 is used to accurately plug the fixing through-hole 102 of the L-shaped base plate 101 to ensure a stable installation.

[0022] When in use, the staff first adjusts the length of the telescopic rod 201 according to the installation position of the oil-immersed transformer 1 to make the spacing between the four mounting seats 2 appropriate, then fixes the mounting seats 2 with bolts 205, and then uses a crane to hoist the oil-immersed transformer 1 above the four mounting seats 2, aligns the bottom ends of the four L-shaped bottom plates 101 with the square through-holes 202, and slowly lowers them to insert them. While inserting, the flexible filling block 203 is compressed to ensure that the L-shaped bottom plate 101 is in close contact with the square through-holes 202, and in the L-shaped After the base plate 101 is inserted, the guiding slope 103 automatically guides the clamping block 404 of the clamping assembly 4 to the correct position, so that the two clamping blocks 404 open to both sides to clamp the L-shaped base plate 101. The opening force of the clamping blocks 404 is controlled by the built-in spring to ensure that the clamping is firm and does not damage the L-shaped base plate 101. As the two clamping blocks 404 open, the clamping assembly 4 also drives the plug-in fixing assembly 5 to move through the connecting rod 6, so that the plug-in rod 5021 is accurately inserted into the fixing through-hole 102 of the L-shaped base plate 101, thereby achieving a secure locking. At this time, the bottom end of the L-shaped bottom plate 101 will be in close contact with the first damping pad 4031, effectively absorbing vibration and preventing the device from shifting. At the same time, the top lower surface of the L-shaped bottom plate 101 will be in close contact with the third damping pad 206 on the top of the mounting seat 2, further buffering vibration and ensuring stable operation of the device. The end of the plug-in rod 5021 will also be in close contact with the second damping pad 5031, forming a shock-absorbing protection, effectively extending the service life of the equipment, and thus the oil-immersed transformer 1 is stably fixed on the four mounting seats 2. This effectively prevents rainwater from directly contacting metal parts, improving weather resistance and service life. At the same time, the dual locking effect of the clamping component 4 and the plug-in fixing component 5, as well as the multiple damping pads, ensures the stability of the installation. Even when the ambient temperature changes and causes the components to expand and contract due to heat and cold, the integrity of the structure can be maintained. It can also further block the transmission path of vibration, effectively isolate and absorb vibration and noise from the transformer, and better maintain low-noise performance.

[0023] See also Figure 5 、 Figure 6 、 Figure 7 and Figure 9 As shown, the clamping assembly 4 includes a guide slide 401, both ends of the guide slide 401 are fixedly connected to the inner side wall of the mounting seat 2, and sliding blocks 405 are slidably installed on the outer walls of both ends of the guide slide 401. The tops of the two sliding blocks 405 are fixed with clamping blocks 404. The tops of the two clamping blocks 404 close to the L-shaped bottom plate 101 are set as driven inclined surfaces 4042. The driven inclined surfaces 4042 cooperate with the guide inclined surfaces 103. The two clamping blocks 404 and The sides of the L-shaped bottom plate 101 that are in contact with the side walls are each provided with a slot 4041 that fits tightly with the side walls of the L-shaped bottom plate 101. The sides of the two clamping blocks 404 that are away from the side walls of the L-shaped bottom plate 101 are connected to the inner side walls of the mounting base 2 via return springs 406. The two ends of each return spring 406 are fixedly connected to the side walls of the clamping block 404 and the inner side walls of the mounting base 2, respectively. The bottom ends of the two sliding blocks 405 are each embedded with a plurality of balls. Three support plates 402 are fixedly sleeved on the outer wall of the middle section of the guide slide rod 401, and abutment plates 403 are fixed to the top ends of the three support plates 402. A first damping pad 4031 is bonded to the upper surface of the abutment plate 403. The first damping pad 4031 is in close contact with the bottom surface of the L-shaped bottom plate 101, and the bottom ends of the three support plates 402 are fixedly connected to the inner bottom wall of the mounting seat 2.

[0024] When the bottom of the L-shaped bottom plate 101 is inserted from the square through-hole 202, as the L-shaped bottom plate 101 gradually moves downward, the guiding inclined surface 103 gradually contacts the driven inclined surface 4042 of the clamping block 404 and pushes the clamping block 404 to move outward. The two moving clamping blocks 404 drive the sliding block 405 to slide along the guide slide rod 401, wherein the sliding block 405 can keep sliding with the inner bottom wall of the mounting seat 2 under the action of the ball, and can also provide a stable supporting force until the slot 4041 and the L-shaped bottom plate 101 are aligned. The side walls are fully engaged, and when the clamping block 404 moves outward, it will squeeze the return spring 406. The return spring 406 stores elastic force to ensure that the clamping block 404 exerts a certain clamping force after the side walls of the L-shaped bottom plate 101 are engaged, maintaining the stability of the structure until the bottom end of the L-shaped bottom plate 101 is fully engaged with the first damping pad 4031. At this time, the top lower surface of the L-shaped bottom plate 101 will be in close contact with the third damping pad 206 on the top wall of the mounting seat 2, forming a double shock-absorbing effect, further reducing operating noise.

[0025] See also Figure 6 、 Figure 7 and Figure 9 As shown, the plug-in fixing assembly 5 includes a movable plate 501 and two fixed blocks 503. The two fixed blocks 503 are fixedly connected to the inner wall of the mounting seat 2. A side support plate 502 is fixed to the side of the movable plate 501 close to the fixed block 503. A plug-in rod 5021 is symmetrically fixed to the side of the side support plate 502 away from the movable plate 501. The two plug-in rods 5021 are plugged into the fixed through-holes 102. The top and bottom ends of the movable plate 501 are in contact with the inner top wall and the inner bottom wall of the mounting seat 2 and are slidably connected. The two fixed blocks 503 are close to the ends of the plug-in rods 5021. The second damping pads 5031 are bonded to the two surfaces, and the two second damping pads 5031 are in close contact with the end faces of the two connecting rods 5021 respectively. Two sets of symmetrical grooves 602 are provided on both sides of the movable plate 501. The sliding block 405 and the clamping block 404 provided in the clamping assembly 4 and the side of the movable plate 501 away from the fixed block 503 are fixed with a connecting seat 601. The two ends of the two sets of connecting rods 6 are respectively movably connected to the connecting seat 601 through the shaft rod. Each groove 602 matches the connecting rod 6, and the groove 602 can facilitate the adjustment of the connecting rod 6.

[0026] The L-shaped bottom plate 101 moves downward and pushes the clamping block 404 to move outward. During the movement of the clamping block 404, the movable plate 501 is driven to move accordingly through the connecting rod 6. The movable plate 501 drives the side support plate 502 and the plug-in rod 5021 to move synchronously, ensuring that the plug-in rod 5021 and the movement of the clamping block 404 form a linkage mechanism. At the moment when the clamping block 404 is engaged with the side wall of the L-shaped bottom plate 101, the plug-in rod 5021 is accurately inserted into the fixing through-hole 102, and the end of the plug-in rod 5021 is in close contact with the second damping pad 5031 to form shock-absorbing protection to prevent structural damage due to impact, thereby completing the stable fixation of the L-shaped bottom plate 101, simplifying the installation process and saving installation time. The length and position of the connecting rod 6 are accurately calculated to ensure that it can provide sufficient supporting force during the movement without generating excessive friction resistance, thereby achieving a smooth and stable linkage effect, further improving the stability of the overall structure.

[0027] The working principle of the present invention is: When in use, the staff first adjusts the length of the telescopic rod 201 according to the installation position of the oil-immersed transformer 1 so that the spacing between the four mounting seats 2 is appropriate, and then fixes the mounting seats 2 with bolts 205. Then, the oil-immersed transformer 1 is hoisted above the four mounting seats 2 by a crane, and the bottom ends of the four L-shaped bottom plates 101 are aligned with the square through-holes 202, and slowly lowered to be inserted. During the insertion, the flexible filling block 203 is compressed to ensure that the L-shaped bottom plate 101 is in close contact with the square through-holes 202. After the L-shaped bottom plate 101 is inserted, as the L-shaped bottom plate 101 gradually moves downward, the guiding inclined surface 103 gradually contacts the driven inclined surface 4042 of the clamping block 404, and pushes the clamping block 404 to move outward, and the two moving clamping blocks 404 The sliding block 405 is driven to slide along the guide slide bar 401, wherein the sliding block 405 can keep sliding with the inner bottom wall of the mounting seat 2 under the action of the ball bearing, while also providing a stable supporting force until the clamping groove 4041 is completely engaged with the side wall of the L-shaped bottom plate 101, and the return spring 406 is squeezed during the movement of the clamping block 404 outward, and the return spring 406 stores elastic force, ensuring that the clamping block 404 exerts a certain clamping force after being engaged with the side wall of the L-shaped bottom plate 101, maintaining the stability of the structure until the bottom end of the L-shaped bottom plate 101 is completely in contact with the first damping pad 4031, and at this time, the top lower surface of the L-shaped bottom plate 101 is in close contact with the third damping pad 206 of the top wall of the mounting seat 2, forming a double shock absorption effect, further reducing the operating noise; As the L-shaped bottom plate 101 moves downward, the clamping block 404 is pushed to move outward. During the movement of the clamping block 404, the connecting rod 6 drives the movable plate 501 to move accordingly. The movable plate 501 drives the side support plate 502 and the plug rod 5021 to move synchronously, ensuring that the plug rod 5021 and the movement of the clamping block 404 form a linkage mechanism. At the moment when the clamping block 404 is engaged with the side wall of the L-shaped bottom plate 101, the plug rod 5021 is accurately inserted into the fixed through-hole 102, and the end of the plug rod 5021 is in close contact with the second damping pad 5031, forming a shock-absorbing protection to prevent structural damage due to impact, thereby completing the stable fixation of the L-shaped bottom plate 101; At this time, the bottom end of the L-shaped base plate 101 will be in close contact with the first damping pad 4031, effectively absorbing vibration and preventing the equipment from shifting. At the same time, the top lower surface of the L-shaped base plate 101 will be in close contact with the third damping pad 206 on the top of the mounting base 2, further buffering vibration and ensuring stable operation of the equipment.

[0028] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiment without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A low-noise oil-immersed transformer, comprising an oil-immersed transformer (1), wherein four corners of the bottom of the oil-immersed transformer (1) are fixed with L-shaped bottom plates (101), and mounting seats (2) are provided below the four L-shaped bottom plates (101), and each mounting seat (2) is provided with a noise reduction fixing mechanism (3) inside. The noise reduction fixing mechanism (3) is used for quickly installing the oil-immersed transformer (1) and reducing vibration and noise, and is characterized in that: The top of each mounting seat (2) is provided with a square through-hole (202), the bottom of each L-shaped bottom plate (101) is inserted into the square through-hole (202), both sides of the bottom of each L-shaped bottom plate (101) are provided with guiding inclined surfaces (103), and the bottom of each L-shaped bottom plate (101) is symmetrically provided with fixing through-holes (102); The noise reduction fixing mechanism (3) is composed of a clamping component (4), a plug-in fixing component (5) and two groups of connecting rods (6). The plug-in fixing component (5) is connected to the clamping component (4) through the connecting rods (6). The clamping component (4) is used to clamp and fix the two sides of the L-shaped bottom plate (101). The plug-in fixing component (5) is used to adjust the position by following the movement of the clamping component (4) through the connecting rods (6). The plug-in fixing component (5) is used to accurately plug the fixing through-holes (102) of the L-shaped bottom plate (101) to ensure a stable installation.

2. A low-noise oil-immersed transformer according to claim 1, characterized in that: The clamping assembly (4) includes a guide slide (401), both ends of the guide slide (401) are fixedly connected to the inner side wall of the mounting seat (2), and sliding blocks (405) are slidably installed on the outer walls of both ends of the guide slide (401), and clamping blocks (404) are fixed to the top ends of the two sliding blocks (405), and the tops of the two clamping blocks (404) close to the L-shaped bottom plate (101) are set as driven inclined surfaces (4042), and the driven inclined surfaces (4042) cooperate with the guiding inclined surfaces (103), and the sides of the two clamping blocks (404) that contact the side walls of the L-shaped bottom plate (101) are provided with card grooves (4041), and the card grooves (4041) are tightly fitted with the side walls of the L-shaped bottom plate (101).

3. A low-noise oil-immersed transformer according to claim 2, characterized in that: The sides of the two clamping blocks (404) away from the side wall of the L-shaped bottom plate (101) are connected to the inner side wall of the mounting seat (2) through a return spring (406), and the two ends of each return spring (406) are fixedly connected to the side wall of the clamping block (404) and the inner side wall of the mounting seat (2), respectively. The bottom ends of the two sliding blocks (405) are embedded with a plurality of balls.

4. A low-noise oil-immersed transformer according to claim 2, characterized in that: The middle section outer wall of the guide slide bar (401) is fixedly sleeved with three support plates (402), the top ends of the three support plates (402) are all fixed with abutment plates (403), the upper surfaces of the abutment plates (403) are bonded with a first damping pad (4031), the first damping pad (4031) is in close contact with the bottom surface of the L-shaped bottom plate (101), and the bottom ends of the three support plates (402) are all fixedly connected to the inner bottom wall of the mounting seat (2).

5. The low-noise oil-immersed transformer according to claim 1, characterized in that: The plug-in fixing assembly (5) comprises a movable plate (501) and two fixed blocks (503), the two fixed blocks (503) being fixedly connected to the inner wall of the mounting seat (2), a side support plate (502) being fixed on a side of the movable plate (501) close to the fixed block (503), and a plug-in rod (5021) being symmetrically fixed on a side of the side support plate (502) away from the movable plate (501), the two plug-in rods (5021) being plug-in connected to the fixed through-hole (102), and the top and bottom ends of the movable plate (501) being in contact with and slidably connected to the inner top wall and inner bottom wall of the mounting seat (2).

6. The low-noise oil-immersed transformer according to claim 5, characterized in that: A second damping pad (5031) is bonded to one side of the two fixing blocks (503) close to the end of the plug rod (5021), and the two second damping pads (5031) are in close contact with the end faces of the two plug rods (5021), respectively.

7. The low-noise oil-immersed transformer according to claim 5, characterized in that: Two groups of symmetrical grooves (602) are provided on both sides of the movable plate (501), and the sliding block (405) and the clamping block (404) provided in the clamping assembly (4) and the side of the movable plate (501) away from the fixed block (503) are fixed with a connecting seat (601), and the two ends of the two groups of connecting rods (6) are movably connected to the connecting seat (601) through an axle rod, and each of the grooves (602) matches the connecting rod (6).

8. The low-noise oil-immersed transformer according to claim 1, characterized in that: Bolts (205) are symmetrically fixed to the bottom ends of the four mounting seats (2), and the four mounting seats (2) are connected by two telescopic rods (201). The two telescopic rods (201) are respectively fixed to the outer wall of one mounting seat (2) by screws, and the telescopic ends of the two telescopic rods (201) are respectively fixed to the outer wall of another mounting seat (2) by screws.

9. The low-noise oil-immersed transformer according to claim 1, characterized in that: Three support rods (204) are provided inside each mounting seat (2) on one side of the plug-in fixing assembly (5), the top and bottom ends of each support rod (204) are fixedly connected to the inner top wall and inner bottom wall of the mounting seat (2), respectively, and a third damping pad (206) is bonded to the top of each mounting seat (2) below the top of the L-shaped bottom plate (101).

10. The low-noise oil-immersed transformer according to claim 1, characterized in that: Flexible filling blocks (203) are bonded to both inner side walls of the square through-hole (202), and both flexible filling blocks (203) are in close contact with both bottom surfaces of the L-shaped bottom plate (101).

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