An oil-immersed transformer base

Abstract

The utility model discloses an oil -immersed transformer chassis, including transformer shell, mounting bracket and gyro wheel chassis. The mounting bracket contains the vertical board and both ends horizontal plate, and the horizontal plate between forms the " " type groove, gyro wheel chassis includes support plate, gyro wheel subassembly, support adjusting block, magnetic attraction piece and adjusting screw rod. The " " type bayonet of support plate extends into the " " type groove and is clamped into the vertical board, and gyro wheel subassembly can be dismantled and is fixed at both ends of support plate, and support adjusting block is located in the " " type groove, and its magnetic attraction groove adsorbs magnetic attraction piece, and adjusting screw rod is connected with the adjusting screw hole screw thread of mounting bracket below horizontal plate and is connected with magnetic attraction piece rotation. The chassis realizes the convenient dismouting of gyro wheel chassis under the prerequisite of not changing the original mounting bracket structure and appearance, and gives consideration to equipment removal flexibility and fixed operation stability, reduces the dependence on large carrying tool, and promotes installation, maintenance and displacement efficiency.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, specifically to an oil-immersed transformer base frame. Background Technology

[0002] In power systems, oil-immersed transformers are important electrical equipment widely used in power transmission and distribution. Their operation requires a stable installation foundation to ensure safe and efficient operation. Therefore, the transformer base, as a key structure for supporting and fixing the transformer, directly affects the installation stability and operational safety of the equipment.

[0003] Currently, traditional oil-immersed transformer base frames typically employ a fixed structure design, mainly consisting of a "U"-shaped mounting frame made of vertical and horizontal plates, which is fixed to the ground or foundation platform through rigid connection. While this fixed structure can meet the requirements for long-term stable operation of transformers, it has significant limitations in the handling, installation, and maintenance of the equipment.

[0004] During the transportation and on-site relocation of transformers, due to their large size and heavy weight, external handling equipment (such as forklifts and cranes) is required for movement. The fixed base frame lacks autonomous movement capabilities, which not only increases the difficulty of handling but also risks causing damage due to improper contact between the handling equipment and the base frame. Furthermore, in installation scenarios with confined spaces or complex terrain, large handling equipment is difficult to access, further increasing the cost and risk of relocation operations.

[0005] To address the mobility issue, some improvement solutions involve directly installing rollers on the base frame. However, this design has significant drawbacks: Firstly, the fixed connection between the rollers and the base frame alters the original structure and shape of the base frame, potentially affecting the compatibility of the transformer installation with the foundation platform and even reducing the stability of the equipment during operation. Secondly, when the transformer needs to be fixed in place for extended periods, the rollers cannot be easily disassembled and constantly bear the weight of the equipment, which can easily lead to wear and deformation of the rollers, affecting their service life and subsequent mobility requirements.

[0006] Therefore, how to achieve convenient installation and removal of rollers without changing the original shape and structure of the mounting frame of the oil-immersed transformer, so as to meet the movement needs during equipment handling and ensure the stability of the equipment during fixed operation, has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0007] To address the shortcomings in the prior art, this utility model provides an oil-immersed transformer base frame.

[0008] The technical solution adopted by the utility model is as follows: an oil-immersed transformer chassis, including a transformer outer shell and a mounting frame arranged at the bottom of the transformer outer shell. The mounting frame includes vertical plates and horizontal plates vertically arranged at both ends of the vertical plates. A "C"-shaped groove is formed between the horizontal plates. It further includes a roller chassis, and the roller chassis includes a support plate, a roller assembly, a support adjustment block, a magnetic attraction block, and an adjustment screw. A "C"-shaped bayonet is arranged on one side of the support plate. The "C"-shaped bayonet extends into the "C"-shaped groove and is clamped on the vertical plate of the mounting frame. The roller assembly is detachably fixed at both ends of the support plate. The support adjustment block is arranged in the "C"-shaped groove. A magnetic attraction groove is arranged below the support adjustment block, and the magnetic attraction block is adsorbed in the magnetic attraction groove. An adjustment screw hole is arranged on the horizontal plate below the mounting frame. The adjustment screw is threadedly connected with the adjustment screw hole and rotatably connected with the magnetic attraction block.

[0009] Furthermore, the support plate includes a metal plate and an elastic buffer plate laid at the bottom of the metal plate. The metal plate and the elastic buffer plate are connected by bolts.

[0010] Furthermore, the elastic buffer plate is provided with a positioning notch adapted to the support adjustment block.

[0011] Furthermore, the roller assembly includes a "U"-shaped frame, a rotating shaft, and rollers. The rollers are rotatably connected with the "U"-shaped frame through the rotating shaft, and the "U"-shaped frame is connected with the support plate by bolts.

[0012] Furthermore, the roller assembly further includes a locking rod. A plurality of first locking holes are evenly distributed in the circumferential direction on the inner wall of the roller. Second locking holes corresponding to the first locking holes are arranged on the "U"-shaped frame.

[0013] Furthermore, a hexagonal screw head is arranged at the end of the adjustment screw. A straight slot is arranged on the end face of the hexagonal screw head.

[0014] Furthermore, the magnetic attraction block includes a magnetic inner core and a metal outer shell wrapped outside the magnetic inner core.

[0015] The beneficial effects of the utility model are as follows: 1. Without changing the structure and shape of the original mounting frame, it has strong adaptability: the roller chassis is clamped with the vertical plate of the mounting frame through a "C"-shaped bayonet, and the pressing and fixing with the mounting frame is realized by using the support adjustment block and the adjustment screw. The entire installation process does not require any modification to the structure, size, and shape of the original "C"-shaped mounting frame. This design ensures that when the transformer needs to be fixed and operated for a long time, the roller chassis can be directly removed, and the mounting frame can maintain its original installation adaptability without affecting the stability of the equipment operation.

[0016] 2. Easy assembly and disassembly of the roller base frame: When connecting the roller base frame to the mounting frame, the support plate is inserted into the vertical plate, and the support plate is pressed onto the mounting frame by adjusting the screw and the support adjustment block. The installation is convenient, and when it is not needed, the adjustment screw can be loosened to complete the disassembly.

[0017] In addition to the objectives, features and advantages described above, this utility model has other objectives, features and advantages.

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a structural diagram of the mounting frame and roller base.

[0021] Figure 3 This is a structural diagram of the mounting bracket.

[0022] Figure 4 This is a schematic diagram of the roller base frame.

[0023] Figure 5 This is a schematic diagram of the adjusting screw.

[0024] Figure 1-5 Components: 1. Transformer casing; 2. Mounting bracket; 3. Vertical plate; 4. Horizontal plate; 5. "U"-shaped slot; 6. Roller base frame; 7. Support plate; 8. Support adjustment block; 9. Magnetic block; 10. Adjusting screw; 11. "U"-shaped bayonet; 12. Magnetic slot; 13. Adjusting screw hole; 14. Metal plate; 15. Elastic buffer plate; 16. Positioning slot; 17. "U"-shaped frame; 18. Rotating shaft; 19. Roller; 20. Locking rod; 21. First locking hole; 22. Second locking hole; 23. Hexagonal screw head; 24. Slotted groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly.

[0027] The present utility model provides an oil-immersed transformer chassis.

[0028] In this embodiment, referring to Figure 1-5 , the oil-immersed transformer chassis includes a transformer outer shell 1 and a mounting frame 2 provided at the bottom of the transformer outer shell 1. The mounting frame 2 includes a vertical plate 3 and horizontal plates 4 vertically provided at both ends of the vertical plate 3. A "C"-shaped groove 5 is formed between the horizontal plates 4. It further includes a roller chassis 6. The roller chassis 6 includes a support plate 7, a roller assembly, a support adjustment block 8, a magnetic attraction block 9, and an adjustment screw 10; One side of the support plate is provided with a "C"-shaped bayonet 11. The "C"-shaped bayonet 11 extends into the "C"-shaped groove and is clamped on the vertical plate of the mounting frame. The roller assembly is detachably fixed at both ends of the support plate; The support adjustment block is arranged in the "C"-shaped groove. A magnetic attraction groove 12 is provided below the support adjustment block, and the magnetic attraction block is adsorbed in the magnetic attraction groove; An adjustment screw hole 13 is provided on the horizontal plate below the mounting frame. The adjustment screw 10 is threadedly connected to the adjustment screw hole 13 and is rotatably connected to the magnetic attraction block.

[0029] In the above technical solution, the oil-immersed transformer chassis adds a roller chassis on the basis of the original mounting frame, and realizes positioning through the clamping of the "C"-shaped bayonet of the support plate with the vertical plate of the mounting frame. The support adjustment block is placed in the "C"-shaped groove, and the magnetic attraction groove below it adsorbs the magnetic attraction block. The adjustment screw hole on the horizontal plate below the mounting frame is threadedly connected to the adjustment screw, and the adjustment screw is rotatably connected to the magnetic attraction block. Rotating the adjustment screw can drive the magnetic attraction block and the support adjustment block to move up and down, so as to press and fix or loosen the support plate. The roller assembly is detachably fixed at both ends of the support plate, realizing the on-demand switching of the moving function.

[0030] The above solution realizes the convenient installation and disassembly of the roller chassis without changing the structure and shape of the original mounting frame. When it needs to be moved, it can be easily carried by using the roller assembly, reducing the dependence on large tools; when operating fixedly, removing the roller chassis does not affect the stability of the mounting frame, taking into account both the moving flexibility and the fixed reliability, and improving the efficiency of equipment installation, maintenance, and displacement.

[0031] Specifically, the support plate includes a metal plate 14 and an elastic buffer plate 15 laid at the bottom of the metal plate. The metal plate 14 and the elastic buffer plate 15 are connected by bolts.

[0032] In this embodiment, the support plate consists of a metal plate and an elastic buffer plate, which are connected by bolts. The metal plate ensures the overall structural strength of the support plate, while the elastic buffer plate utilizes its own elastic properties to provide cushioning. This ensures the support plate's load-bearing capacity for the transformer, absorbs vibration and impact during equipment movement or operation, reduces damage to internal transformer components caused by vibration, and lowers noise during equipment operation.

[0033] Specifically, the elastic buffer plate is provided with a positioning slot 16 that is adapted to the support adjustment block.

[0034] In this embodiment, the elastic buffer plate is provided with a positioning slot that matches the support adjustment block. When the support adjustment block presses against the elastic buffer plate, a portion of the support adjustment block's structure is embedded in the positioning slot. The positioning slot can limit the position of the support adjustment block, preventing lateral displacement when the support adjustment block is under force, and further enhancing the stability of the connection between the roller base and the mounting frame.

[0035] Specifically, the roller assembly includes a U-shaped frame 17, a rotating shaft 18, and rollers 19. The rollers are rotatably connected to the U-shaped frame via the rotating shaft, and the U-shaped frame is connected to the support plate by bolts.

[0036] In this embodiment, the roller assembly includes a U-shaped frame, a rotating shaft, and rollers. The rollers are rotatably connected to the U-shaped frame via the rotating shaft, allowing the rollers to rotate flexibly. The U-shaped frame and the support plate are detachably fixed by bolts.

[0037] Specifically, the roller assembly also includes a locking rod 20, and a plurality of first locking holes 21 are evenly spaced around the inner wall of the roller, and a second locking hole 22 corresponding to the first locking hole 21 is provided on the "U"-shaped frame.

[0038] In this embodiment, a locking rod is added to the roller assembly. Several first locking holes are arranged around the inner wall of the roller, and corresponding second locking holes are present on the "U"-shaped frame. When it is necessary to fix the roller, the locking rod is inserted into the aligned first and second locking holes to restrict the roller's rotation. The locking rod design achieves the braking function of the roller, effectively fixing it when the equipment does not need to be moved or temporarily parked, preventing accidental slippage and improving the safety of the equipment during parking and installation.

[0039] Specifically, the end of the adjusting screw is provided with a hexagonal screw head 23, and a slotted groove 24 is provided on the end face of the hexagonal screw head.

[0040] In this embodiment, a hexagonal screw head is provided at the end of the adjusting screw, and the end face of the hexagonal screw head has a slot. The hexagonal screw head is compatible with wrench operation, and the slot can be used with a screwdriver. It can be adapted to various tools, and in different operating environments, operators can select the appropriate tool for adjustment according to the actual situation, improving the flexibility and efficiency of operation.

[0041] Specifically, the magnetic block includes a magnetic inner core and a metal outer shell that surrounds the magnetic inner core.

[0042] In this embodiment, the magnetic block consists of a magnetic inner core and a metal outer shell. The magnetic inner core provides the attraction force to achieve the attraction connection with the magnetic groove of the support adjustment block, while the metal outer shell protects the magnetic inner core and is used for rotational connection with the adjustment screw.

[0043] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A base frame for an oil-immersed transformer, comprising a transformer housing and a mounting frame disposed at the bottom of the transformer housing, the mounting frame comprising a vertical plate and horizontal plates perpendicularly disposed at both ends of the vertical plate, the horizontal plates forming an "U"-shaped groove, characterized in that: It further includes a roller chassis, and the roller chassis includes a support plate, a roller assembly, a support adjustment block, a magnetic attraction block, and an adjustment screw; One side of the support plate is provided with a "C"-shaped bayonet, and the "C"-shaped bayonet extends into the "C"-shaped groove and is snapped onto the vertical plate of the mounting frame; The roller assembly is detachably fixed at both ends of the support plate; The support adjustment block is arranged in the "C"-shaped groove, a magnetic attraction groove is arranged below the support adjustment block, and the magnetic attraction block is adsorbed in the magnetic attraction groove; An adjustment screw hole is arranged on the horizontal plate below the mounting frame, and the adjustment screw is threadedly connected with the adjustment screw hole and rotatably connected with the magnetic attraction block.

2. The base frame of the oil-immersed transformer according to claim 1, characterized in that: The support plate includes a metal plate and an elastic buffer plate laid at the bottom of the metal plate, and the metal plate and the elastic buffer plate are connected by bolts.

3. The base frame of the oil-immersed transformer according to claim 2, characterized in that: The elastic buffer plate is provided with a positioning notch adapted to the support adjustment block.

4. The base frame of the oil-immersed transformer according to claim 1, characterized in that: The roller assembly includes a "U"-shaped frame, a rotating shaft, and rollers. The rollers are rotatably connected to the "U"-shaped frame through the rotating shaft, and the "U"-shaped frame is connected to the support plate by bolts.

5. The base frame of the oil-immersed transformer according to claim 4, characterized in that: The roller assembly further includes a locking rod. A plurality of first locking holes are circumferentially arranged at equal intervals on the inner wall of the roller, and second locking holes corresponding to the first locking holes are arranged on the "U"-shaped frame.

6. The base frame of the oil-immersed transformer according to claim 1, characterized in that: The end of the adjustment screw is provided with a hexagonal screw head, and a slot is arranged on the end face of the hexagonal screw head.

7. The base frame of the oil-immersed transformer according to claim 1, characterized in that: The magnetic attraction block includes a magnetic inner core and a metal outer shell wrapped around the magnetic inner core.

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