A base for a power transformer and a power transformer

Abstract

This invention provides a base for a power transformer and a power transformer, including a support bracket, a first vibration damping assembly, a second vibration damping assembly, a lifting bracket, and a wheel assembly. The support bracket is installed at the bottom of the power transformer; the first vibration damping assembly is installed on the upper side of the support bracket and is horizontally positioned to clamp and dampen the power transformer; the second vibration damping assembly is detachably installed on the lower side of the support bracket and is vertically oriented towards the mounting base surface; the lifting bracket is symmetrically arranged circumferentially along the support bracket and is used to cooperate with external machinery to lift the support bracket; the wheel assembly is detachably installed on the lower side of the support bracket; when the support bracket is supported by external machinery via the lifting bracket, the wheel assembly is installed and the external machinery is unloaded to move the power transformer, or the wheel assembly and external machinery are unloaded to allow the second vibration damping assembly to contact and support the mounting base surface. This base improves the compatibility of the power transformer in terms of movement, installation, and vibration damping.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, specifically providing a base for a power transformer and a power transformer. Background Technology

[0002] Power transformers are key equipment in power systems that enable voltage level transformation, efficient power transmission, and hierarchical operation of the power grid, playing an important role in all aspects of power generation, transmission, and distribution.

[0003] Existing technologies, such as the utility model patent CN218447454U entitled "A Base for a Power Transformer," include a support base and a fixing device. The fixing device includes a clamping mechanism and a positioning mechanism, which enables rapid installation of the transformer. However, the function of this base is relatively simple and fails to meet the needs of vibration reduction and movement. The utility model patent CN209072241U entitled "A Novel Vibration-Damping Support for Transformers" includes an upper base and a bottom wheel assembly. The base has a placement cavity inside, with clamping devices on both sides of the cavity. A buffer cavity is located at the bottom of the base, containing springs and sealing gas to provide synergistic vibration reduction. This utility model patent improves the vibration reduction effect by introducing gas pressure and uses the wheel assembly to move the support. However, if the gas in the buffer cavity on the base leaks, the vibration-damping support will be difficult to reuse. Furthermore, under normal transformer operation, only the wheel assembly is in contact with the ground, resulting in a small contact area and a large concentrated load on the wheel assembly, which can easily cause damage and lead to insufficient overall stability.

[0004] Therefore, the existing power transformer bases, which use rollers or slide rails for installation, suffer from low positioning accuracy, insufficient stability, and low construction safety and efficiency. Furthermore, during transformer operation, the periodic vibrations caused by the magnetostrictive effect of the core and the electromagnetic force of the windings can easily lead to increased noise, loosening of connecting components, and structural fatigue damage. Using these existing power transformer bases makes it difficult to balance installation mobility, operational stability, and vibration reduction performance. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that existing power transformer bases are difficult to balance in terms of installation mobility, operational stability and vibration reduction performance.

[0006] The objective of this invention is achieved through the following technical solution: This invention provides a base for a power transformer, comprising: a support bracket installed at the bottom of the power transformer; a first vibration damping component installed on the upper side of the support bracket, the first vibration damping component being arranged horizontally to clamp and dampen the power transformer; a second vibration damping component detachably installed on the lower side of the support bracket and arranged vertically toward the mounting base surface; a lifting bracket symmetrically arranged circumferentially along the support bracket, the lifting bracket being used to cooperate with external machinery to lift the support bracket; and a wheel assembly detachably installed on the lower side of the support bracket; when the support bracket is supported by the external machinery via the lifting bracket, the wheel assembly is installed and the external machinery is unloaded to move the power transformer, or the wheel assembly and the external machinery are unloaded to allow the second vibration damping component to contact and support the mounting base surface.

[0007] Preferably, the support bracket includes multiple strip-shaped support frames arranged laterally and longitudinally. Each strip-shaped support frame has a strip-shaped groove and a bidirectional lead screw disposed within the strip-shaped groove, as well as a drive head located outside the strip-shaped support frame and connected to the bidirectional lead screw. A first vibration damping component is threadedly movably connected to each side of the bidirectional lead screw. The drive head drives the bidirectional lead screw to rotate, causing the two first vibration damping components to slide towards or away from each other on the strip-shaped support frame. Second vibration damping components are installed on the lower sides of both ends of each strip-shaped support frame. The lifting bracket is installed at both ends of at least one transverse and one longitudinal strip-shaped support frame. The wheel assembly is installed at both ends of the remaining strip-shaped support frames.

[0008] Preferably, the first vibration damping assembly includes a first plate, an elastic vibration damper mounted on the upper part of the first plate, a horizontal base plate mounted on the lower part of the first plate, a guide side plate, and a drive connecting plate; the drive connecting plate is axially threadedly connected to the bidirectional lead screw; the guide side plate is axially slidably connected to the outer side of the strip bracket frame; and the elastic vibration damper is horizontally arranged facing the side wall of the power transformer.

[0009] Preferably, the elastic damping member includes: a support frame, one end of which is horizontally fixed to the upper part of the first plate; a second plate, which is fixed to the other end of the support frame, and the second plate has a through hole; a sliding column, which passes through the through hole and has a first end plate and a second end plate fixed at both ends, the first end plate being located between the first plate and the second plate; a first spring and a plurality of second springs are provided in the support frame, the first spring being located between the first plate and the first end plate; the plurality of second springs are located between the first end plate and the second plate and are evenly distributed along the circumference of the sliding column; a third spring is provided between the second end plate and the second plate, and a rubber layer is provided on the outer side of the second end plate.

[0010] Preferably, a high-strength wrinkle-resistant fabric loop is provided for circumferential sealing between the second end plate and the second flat plate, and the high-strength wrinkle-resistant fabric loop covers the third spring.

[0011] Preferably, the guide side plate includes a side plate body and a guide strip disposed on the side plate body, the guide strip slidingly engaging with a linear groove disposed on the side wall of the strip bracket frame.

[0012] Preferably, the horizontal base plate includes a base plate body layer and a sliding plate layer detachably mounted on the lower surface of the base plate body layer, the sliding plate layer being used to reduce frictional loss between the sliding plate and the upper surface of the strip support frame.

[0013] Preferably, the second vibration damping assembly includes a first cover plate, a second cover plate, a movable core column, a fixed core column, a rubber damping layer, a partition solidification layer, and a rubber sealing ring; the first cover plate is installed at one end of the movable core column, the second cover plate is installed at one end of the fixed core column, and the other end of the movable core column and the other end of the fixed core column are axially slidingly engaged; the rubber damping layer and the partition solidification layer are alternately stacked and surround the outer side of the movable core column and the fixed core column as a whole; the rubber sealing ring is connected between the first cover plate and the second cover plate and circumferentially seals the rubber damping layer and the partition solidification layer; the first cover plate or the second cover plate is detachably connected to the bearing bracket.

[0014] Preferably, the wheel assembly includes a telescopic bracket and heavy-duty swivel casters mounted on the telescopic bracket. The telescopic bracket is hinged to the load-bearing bracket via a pin. When the telescopic bracket is in the extended state, the heavy-duty swivel casters are in contact with the ground and support the load-bearing bracket, while the second vibration damping component is detached from the ground. When the telescopic bracket is in the retracted state, the heavy-duty swivel casters are detached from the ground, while the second vibration damping component is in contact with the ground and supports the load-bearing bracket.

[0015] Based on the same inventive concept, the present invention also provides a power transformer, wherein the base for the power transformer is mounted on the bottom of the power transformer.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The base for a power transformer of the present invention includes a support bracket, a first vibration damping component, a second vibration damping component, a lifting bracket, and a wheel assembly. The support bracket is installed at the bottom of the power transformer; the first vibration damping component is installed on the upper side of the support bracket, and is horizontally positioned to clamp and dampen the power transformer; the second vibration damping component is detachably installed on the lower side of the support bracket and is vertically oriented towards the mounting base surface; the lifting bracket is symmetrically arranged horizontally around the support bracket, and is used to cooperate with external machinery to lift the support bracket; the wheel assembly is detachably installed on the lower side of the support bracket; when the support bracket is supported by external machinery via the lifting bracket, the wheel assembly is installed and the external machinery is unloaded to move the power transformer, or the wheel assembly and external machinery are unloaded to allow the second vibration damping component to contact and support the mounting base surface. In other words, the base, by constructing a working mode that can be switched under different operating conditions, structurally decouples the movement function from the operational bearing function, avoiding the instability problem caused by relying solely on the wheel assembly for bearing; simultaneously, the first vibration damping component enables rapid positioning of the transformer and dissipates horizontal vibration energy, forming a multi-dimensional collaborative vibration damping and stable support mechanism in conjunction with the second vibration damping component. This base enhances the compatibility of power transformers with mobility, installation, and vibration damping. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the base for a power transformer according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the horizontal support in an embodiment of the present invention; Figure 3 This is a schematic diagram of the longitudinal support structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the first vibration damping component according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the internal structure of the first vibration damping component according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the second vibration damping component according to an embodiment of the present invention; Figure 7 This is a cross-sectional view of the second vibration damping component according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the telescopic wheel assembly according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the connection structure between the transformer and the base in a movable state according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the connection structure between the transformer and the base in a fixed state according to an embodiment of the present invention.

[0018] Reference numerals: 1-Power transformer; 2-Transverse support; 21-Strip support frame; 22-Splicing groove; 23-Linear slide; 24-Double-direction screw; 25-Drive head; 26-Wheelset mounting hole; 27-Wheelset pin hole; 3-Longitudinal support; 4-First vibration damping component; 41-Horizontal base plate; 411-Base plate body layer; 412-Slide plate layer; 413-Stop strip; 42-Guide side plate; 421-Guide strip; 43-Drive connecting plate; 44-Reinforcing rib; 45-First flat plate; 46-Support frame; 47-Second flat plate; 48-High-strength wrinkle-resistant fabric 49-First spring; 4101-First end plate; 4102-Sliding column; 4103-Second end plate; 4104-Second spring; 4105-Third spring; 5-Second vibration damping assembly; 51-First cover plate; 511-First ear plate; 52-Rubber sealing ring; 53-Second cover plate; 531-Second ear plate; 54-Modible core column; 55-Fixed core column; 56-Rubber vibration damping layer; 57-Partition solidification layer; 6-Lifting bracket; 7-Wheel assembly; 71-Extendable bracket; 711-Pin hole; 712-Fixing hole; 72-Heavy-duty universal wheel. Detailed Implementation

[0019] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] like Figure 1 , Figure 9 and Figure 10As shown, the present invention provides a base for a power transformer 1, comprising a support bracket, a first vibration damping component 4, a second vibration damping component 5, a lifting bracket 6, and a wheel assembly 7. The support bracket is installed at the bottom of the power transformer 1; the first vibration damping component 4 is installed on the upper side of the support bracket, and the first vibration damping component 4 is arranged horizontally to clamp and dampen the power transformer 1; the second vibration damping component 5 is detachably installed on the lower side of the support bracket and is arranged vertically toward the mounting base surface; the lifting bracket 6 is symmetrically arranged circumferentially along the support bracket, and the lifting bracket 6 is used to cooperate with external machinery to lift the support bracket; the wheel assembly 7 is detachably installed on the lower side of the support bracket; when the support bracket is supported by external machinery through the lifting bracket 6, the wheel assembly 7 is installed and the external machinery is unloaded to move the power transformer 1, or the wheel assembly 7 and the external machinery are unloaded so that the second vibration damping component 5 contacts the mounting base surface for support.

[0022] It should be noted that the external machinery can be lifting machinery (jacks) or sling machinery.

[0023] This base structure achieves structural decoupling between mobility and load-bearing functions by incorporating a working mode that can switch between different operating conditions. This avoids the instability issues caused by relying solely on the wheel set to support the power transformer 1. Simultaneously, the first vibration damping component 4 enables rapid positioning of the power transformer 1 and dissipates horizontal vibration energy. Combined with the second vibration damping component 5, which has a limiting function, this forms a multi-dimensional, collaborative vibration damping and stable support mechanism. Furthermore, the key second vibration damping component 5 adopts a structural design that facilitates disassembly and replacement, improving the reliability and engineering applicability of the base during long-term operation.

[0024] Specifically, such as Figure 1 As shown, the support frame in the base of the present invention includes a plurality of strip-shaped support frames 21 arranged laterally and longitudinally. Each strip-shaped support frame 21 contains a strip-shaped support frame 22, a bidirectional lead screw 24 disposed within the strip-shaped support frame 22, and a drive head 25 located outside the strip-shaped support frame 21 and connected to the bidirectional lead screw 24. A first vibration damping component 4 is threadedly connected to each side of the bidirectional lead screw 24. The drive head 25 drives the bidirectional lead screw 24 to rotate so that the two first vibration damping components 4 slide towards or away from each other on the strip-shaped support frame 21. Second vibration damping components 5 are installed on the lower sides of both ends of the strip-shaped support frame 21. Lifting brackets 6 are installed at both ends of at least one transverse and one longitudinal strip-shaped support frame 21. Wheel assemblies 7 are installed at both ends of the remaining strip-shaped support frames 21.

[0025] For example, such as Figures 1 to 3 As shown, the layout structure of multiple strip support frames 21 in this embodiment of the invention includes a longitudinal support 3 and three transverse supports 2 that are evenly spaced and installed along the longitudinal support 3.

[0026] like Figure 2As shown, the horizontal support 2 has a strip-shaped groove in the middle of the strip-shaped support frame 21, and linear grooves 23 are formed on both sides of the strip-shaped support frame 21. The main body of the bidirectional lead screw 24 is located inside the strip-shaped support frame 22 and its end extends out of the strip-shaped support frame 21 and is fixedly installed with the drive head 25. For mounting the wheel assembly 7, the outer end of the strip-shaped support frame 21 is also provided with wheel assembly mounting holes 26 and wheel assembly pin holes 27. For the horizontal support 2 that only requires the end mounting of the lifting support 6, the end of the strip-shaped support frame 21 is also provided with bolt mounting holes that match the lifting support 6.

[0027] It should be noted that the transverse support 2 is provided with a splicing groove 22 between it and the longitudinal support. The splicing groove 22 is arranged in the lower middle part of the thickness direction of the strip support frame 21, and the installation height of the bidirectional lead screw 24 should be slightly higher than the position of the splicing groove 22 to avoid spatial interference with the lead screw set inside the longitudinal support 3.

[0028] like Figure 3 As shown, the overall structure of the longitudinal support 3 is basically the same as that of the transverse support 2. The difference is that the splicing groove of the longitudinal support 3 is located on the upper part of its thickness direction, offset from the splicing groove 22 of the transverse support 2, but matched in shape and size. This ensures that after the transverse support 2 and the longitudinal support 3 are inserted and assembled, their upper surfaces remain flush. After assembly, spot welding is performed at the joints to enhance the overall stability of the support structure.

[0029] It should be noted that, in practical applications, those skilled in the art can reasonably adjust the number of horizontal supports 2 and vertical supports 3 according to the size and weight of the power transformer 1.

[0030] like Figure 4 and Figure 5 As shown, the first vibration damping component 4 includes a first plate 45, an elastic vibration damper mounted on the upper part of the first plate 45, a horizontal base plate 41 mounted on the lower part of the first plate 45, a guide side plate 42, and a drive connecting plate 43; the drive connecting plate 43 is axially threadedly connected to the bidirectional lead screw 24; the guide side plate 42 is axially slidingly limited and connected to the outer side of the strip bracket frame 21; the elastic vibration damper is horizontally arranged facing the side wall of the power transformer 1.

[0031] The horizontal base plate 41 is welded and fixed to the first flat plate 45. A reinforcing rib 44 is provided between the first flat plate 45 and the horizontal base plate 41 to increase the overall horizontal support stiffness of the first vibration damping component. The drive connecting plate 43 is welded and fixed to the first flat plate 45. A threaded hole is provided in the middle of the drive connecting plate 43 for axial threaded connection with the bidirectional lead screw 24. The guide side plate 42 includes a side plate body and a guide strip 421 disposed on the side plate body. The guide strip 421 cooperates with a linear slide groove 23 sliding guide wire disposed on the side wall of the strip-shaped support frame 21. There are two guide side plates 42, which are respectively fixed to the left and right sides of the horizontal base plate 41 in the direction of movement.

[0032] Understandably, when the power transformer 1 is placed on the assembled support frame, the rotating drive head 25 can cause the first vibration damping components on both sides of the transverse or longitudinal support to move simultaneously towards or away from each other, thereby achieving rapid clamping and fixing or releasing of the power transformer 1.

[0033] The horizontal base plate 41 includes a base plate body layer 411 and a polytetrafluoroethylene (PTFE) sliding plate layer 412 detachably mounted on the lower surface of the base plate body layer 411. The sliding plate layer 412 is used to reduce frictional loss between the base plate and the upper surface of the strip support frame 21. Specifically, the horizontal base plate 41 includes an upper steel plate and a lower replaceable PTFE sliding plate layer 412. The sliding plate layer 412 is detachably mounted on the lower surface of the steel plate and slides in contact with the upper surface of the strip support frame 21 to reduce frictional loss between the horizontal base plate 41 and the strip support frame 21, so that the first vibration damping component can move smoothly and flexibly as a whole. The bottom surface of the base plate body layer 411 is provided with an installation groove, and the sliding plate layer 412 is horizontally embedded in the installation groove. The front and rear sides of the sliding plate layer 412 are respectively provided with baffles 413. The baffles 413 are fixed to the end of the base plate body layer 411 by bolts to prevent the sliding plate layer 412 from moving and to facilitate the disassembly and replacement of the sliding plate layer 412 in the future.

[0034] like Figure 5As shown, the elastic damping component includes a support frame 46, a second plate 47, and a sliding column 4102: one end of the support frame 46 is horizontally fixed to the upper part of the first plate 45; the second plate 47 is fixed to the other end of the support frame 46, and a through hole is provided on the second plate 47; the sliding column 4102 passes through the through hole and has a first end plate 4101 and a second end plate 4103 fixed at both ends respectively, the first end plate 4101 being located between the first plate 45 and the second plate 47; a first spring 49 and a plurality of second springs 4104 are provided inside the support frame 46, the first spring 49 being located between the first plate 45 and the first end plate 4101; the plurality of second springs 4104 are located between the first end plate 4101 and the second plate 47 and are evenly distributed along the circumference of the sliding column 4102; a third spring 4105 is provided between the second end plate 4103 and the second plate 47, and a rubber layer is provided on the outer side of the second end plate 4103.

[0035] For example, such as Figure 5 As shown, the first plate 45, the second plate 47, the first end plate 4101, and the second end plate 4103 are all arranged parallel to and perpendicular to the axial direction of the sliding column 4102. The support frame 46, the second plate 47, the first end plate 4101, and the second end plate 4103 are all rectangular structures. The first spring 49, the second spring 4104, and the third spring 4105 are all helical springs, with four second springs 4104. The outer side of the second end plate 4103 is provided with a rubber layer with a thickness of 3mm-5mm for contacting the side wall of the power transformer 1's enclosure, to dampen and dissipate energy from minor horizontal vibrations during the operation of the power transformer 1. A high-strength, wrinkle-resistant fabric loop 48 is provided for circumferential sealing between the second end plate 4103 and the second plate 47, covering the third spring 4105 and allowing for horizontal expansion and contraction redundancy. High-strength, wrinkle-resistant fabric webbing 48 includes polyester (PET) webbing, nylon (polyester) webbing, RPET (recycled polyester) webbing, etc.

[0036] When the power transformer 1 experiences horizontal vibration, the high-strength, wrinkle-resistant fabric loop 48 allows the power transformer 1 to generate horizontal displacement within a limited range, and works in conjunction with multiple sets of springs installed inside the support frame 46 to dissipate and attenuate the horizontal vibration. Simultaneously, the high-strength, wrinkle-resistant fabric loop 48 encloses the ends of the elastic damping element to form a sealed structure isolated from the outside, effectively preventing foreign objects from entering the support frame 46 and improving its durability.

[0037] like Figure 6 and Figure 7As shown, the second vibration damping assembly 5 includes a first cover plate 51, a second cover plate 53, a movable core column 54, a fixed core column 55, a rubber damping layer 56, a partition solidification layer 57, and a rubber sealing ring 52. The first cover plate 51 is installed at one end of the movable core column 54, and the second cover plate 53 is installed at one end of the fixed core column 55. The other end of the movable core column 54 and the other end of the fixed core column 55 are axially slidingly engaged with each other. The rubber damping layer 56 and the partition solidification layer 57 are alternately stacked and surround the outer side of the movable core column 54 and the fixed core column 55. The rubber sealing ring 52 is connected between the first cover plate 51 and the second cover plate 53 and seals the rubber damping layer 56 and the partition solidification layer 57 circumferentially. The first cover plate 51 or the second cover plate 53 is detachably connected to the support bracket.

[0038] For example, such as Figure 6 and Figure 7 As shown, the surface of the first cover plate 51 is provided with a rubber layer with a thickness of 3mm-5mm. First ear plates 511 for fixed connection are provided on both sides of the first cover plate 51, so that the first ear plates 511 can be detachably connected to the strip support frame 21. Second ear plates 531 for fixed connection are provided on both sides of the second cover plate 53, so that the second ear plates 531 can be detachably connected to the mounting base surface (ground or transformer foundation). The lower end of the movable core column 54 is provided with a columnar hole, and the upper end of the fixed core column 55 is provided with a columnar platform. The columnar hole and the columnar platform are axially slidingly fitted together. The three-layer rubber vibration damping layer 56 and the two-layer partition solidification layer 57 are alternately stacked and sealed and reinforced by a high-damping rubber sealing ring 52, thereby achieving the functions of sealing, protection, solidification, and vibration damping. During the normal operation of the power transformer 1, the small vertical vibration energy is absorbed and dissipated by multiple second vibration damping components 5. The depth of the columnar holes is 5cm-8cm, which provides the necessary displacement space for vertical vibration reduction and ensures that the base does not lose its overall stability when the second vibration reduction component 5 fails.

[0039] It is understood that in this invention, the second vibration damping component 5, through the synergistic action of the movable core column 54 and the fixed core column 55, effectively constrains horizontal displacement while allowing vertical vibration. The alternating high-damping rubber layer and partition solidification layer 57 inside the second vibration damping component 5 endow it with good vertical energy dissipation capacity and suppress lateral deformation. The outer rubber sealing ring 52 further enhances its vertical energy dissipation, pull-out resistance, and overturning resistance, while also providing protection and improving the durability of the second vibration damping component 5. By allowing small vertical displacement to absorb vibration energy while effectively constraining horizontal displacement, a multi-dimensional synergistic vibration damping and stable support mechanism is formed. Furthermore, the second vibration damping component 5 adopts a structural design that facilitates disassembly and replacement, improving the ease of replacement of the base during long-term operation.

[0040] like Figure 9 and10 As shown, in this invention, the lifting bracket 6 is installed at both ends of the horizontal bracket 2 or the longitudinal bracket 3 using high-strength bolts. The lifting bracket 6 has rectangular holes to avoid spatial interference between the bolts and the drive head 25. The lifting bracket 6 provides a stable lifting fulcrum for external instruments such as jacks. It is suitable for two working conditions: First, during the installation and positioning of the power transformer 1, when there is a short distance between the transport vehicle and the installation foundation of the power transformer 1, the lifting bracket 6 is used to lift the base as a whole, allowing the wheel assembly 7 to contact the ground, thereby achieving short-distance movement; Second, when the second vibration damping component 5 needs to be replaced, the lifting bracket 6 is used to lift the base, making it easy to disassemble and replace the aged or damaged second vibration damping component 5.

[0041] like Figure 8 As shown, the wheel assembly 7 in the base of the present invention includes a telescopic bracket 71 and heavy-duty universal wheels 72 mounted on the telescopic bracket 71. The telescopic bracket 71 is hinged to the support bracket via a pin. When the telescopic bracket 71 is in the extended state, the heavy-duty universal wheels 72 are in contact with the ground and support the support bracket, while the second vibration damping component 5 is detached from the ground. When the telescopic bracket 71 is in the retracted state, the heavy-duty universal wheels 72 are detached from the ground, while the second vibration damping component 5 is in contact with the ground and supports the support bracket. The telescopic bracket 71 is a U-shaped frame, and its two sides can adopt a segmented design structure to achieve telescopic function. The telescopic bracket 71 has pin holes 711 on both sides that are connected to the wheel pin holes 27 of the transverse support 2 via pins. The bottom of the telescopic bracket 71 has fixing holes 712 for fixing the heavy-duty universal wheels 72 to the wheel mounting holes 26 on the side of the transverse support (2) when unloading. The heavy-duty universal wheels 72 are fixed to the bottom of the telescopic bracket 71, which can bear the weight of the power transformer 1 and achieve flexible movement in multiple directions.

[0042] In summary, this invention integrates the transverse support 2, the longitudinal support 3, the horizontal first vibration damping component 4, the vertical second vibration damping component 5, the lifting support 6, and the wheel assembly 7 into a single load-bearing support structure, enabling the base of the power transformer 1 to simultaneously provide reliable support, bidirectional vibration damping, and short-distance movement capability. Specifically, by switching the lifting support 6 to the wheel assembly 7 operating state, the base of the power transformer 1 gains mobility during the installation phase, facilitating the transportation and placement of the power transformer 1. After the transformer is properly installed and in operation, the lifting support can be switched to unload and lift the wheel assembly 7, allowing the vertical second vibration damping component to reliably contact the ground and assume a supporting role, thereby avoiding the instability problem caused by only the wheel assembly 7 contacting the ground.

[0043] It should be noted that the rubber used in this invention is based on natural rubber. For every 100g of natural rubber, 3-6g of fine-particle carbon black N115 is added as a reinforcing filler. The components are added sequentially in a mass ratio of zinc oxide:stearic acid:organic small molecule additives:vulcanizing agent = 2:1:0.5:1. The vulcanizing agent is selected from sulfenamide-type or thiazole-type vulcanizing agents. The high-damping rubber is prepared by compression molding after mixing. In this invention, the main load-bearing components in the load-bearing bracket, the first vibration damping component 4, the second vibration damping component 5, the lifting bracket 6, and the wheel assembly 7 are all made of steel.

[0044] Finally, the present invention also provides a power transformer, the bottom of which is fitted with the aforementioned base for power transformers.

[0045] The above are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of the claims of the present invention pending approval.

Claims

1. A base for a power transformer, characterized in that, include: A support bracket is installed at the bottom of the power transformer (1); The first vibration damping component (4) is installed on the upper side of the support bracket. The first vibration damping component (4) is arranged in the horizontal direction to clamp and dampen the power transformer (1). The second vibration damping component (5) is detachably mounted on the underside of the support bracket and is set vertically toward the mounting base surface; A lifting bracket (6) is symmetrically arranged along the horizontal circumference of the bearing bracket. The lifting bracket (6) is used to cooperate with external machinery to lift the bearing bracket. Wheel assembly (7), which is detachably mounted on the underside of the support bracket; When the external machinery is used to support the load-bearing bracket via the lifting bracket (6), the wheel assembly (7) is installed and the external machinery is unloaded to move the power transformer (1), or the wheel assembly (7) and the external machinery are unloaded so that the second vibration damping assembly (5) contacts and supports the mounting base surface.

2. The base for a power transformer according to claim 1, characterized in that, The support bracket includes a plurality of strip bracket frames (21) arranged horizontally and vertically to each other. Each strip bracket frame (21) is provided with a strip groove and a bidirectional lead screw (24) disposed in the strip groove, and a drive head (25) located outside the strip bracket frame (21) and connected to the bidirectional lead screw (24). The two-way lead screw (24) is threadedly connected to one of the first vibration damping components (4) on each side. The drive head (25) drives the two-way lead screw (24) to rotate so that the two first vibration damping components (4) slide towards each other or away from each other on the strip support frame (21). The second vibration damping component (5) is installed on the lower sides of both ends of the strip support frame (21); The lifting bracket (6) is installed at both ends of at least one transverse and one longitudinal strip bracket frame (21); The wheel assembly (7) is installed at both ends of the remaining strip support frame (21).

3. The base for a power transformer according to claim 2, characterized in that, The first vibration damping component (4) includes a first plate (45), an elastic vibration damping member installed on the upper part of the first plate (45), a horizontal base plate (41) installed on the lower part of the first plate (45), a guide side plate (42) and a drive connection plate (43); The drive connecting plate (43) is axially threadedly connected to the bidirectional lead screw (24); The guide side plate (42) is axially slidably connected to the outer side of the strip bracket frame (21); The elastic damping element is horizontally positioned toward the side wall of the power transformer (1).

4. The base for a power transformer according to claim 3, characterized in that, The elastic damping element includes: A support frame (46) is horizontally fixed at one end to the upper part of the first plate (45); The second plate (47) is fixed to the other end of the support frame (46), and the second plate (47) is provided with a through hole; A sliding column (4102) passes through the through hole and has a first end plate (4101) and a second end plate (4103) fixed at both ends respectively. The first end plate (4101) is located between the first plate (45) and the second plate (47). The support frame (46) is provided with a first spring (49) and a plurality of second springs (4104). The first spring (49) is located between the first plate (45) and the first end plate (4101); the plurality of second springs (4104) are located between the first end plate (4101) and the second plate (47) and are evenly distributed along the circumference of the sliding column (4102). A third spring (4105) is provided between the second end plate (4103) and the second flat plate (47), and a rubber layer is provided on the outer side of the second end plate (4103).

5. The base for a power transformer according to claim 4, characterized in that, A high-strength wrinkle-resistant fabric loop (48) is provided for circumferential sealing between the second end plate (4103) and the second plate (47), and the high-strength wrinkle-resistant fabric loop (48) covers the third spring (4105).

6. The base for a power transformer according to claim 3, characterized in that, The guide side plate (42) includes a side plate body and a guide strip (421) disposed on the side plate body. The guide strip (421) is slidably engaged with a linear groove (23) disposed on the side wall of the strip bracket frame (21).

7. The base for a power transformer according to claim 3, characterized in that, The horizontal base plate (41) includes a base plate body layer (411) and a sliding plate layer (412) detachably mounted on the lower surface of the base plate body layer (411), the sliding plate layer (412) being used to reduce frictional loss between the base plate body layer (411) and the upper surface of the strip support frame (21).

8. The base for a power transformer according to claim 1, characterized in that, The second vibration damping component (5) includes a first cover plate (51), a second cover plate (53), a movable core column (54), a fixed core column (55), a rubber vibration damping layer (56), a partition solidification layer (57), and a rubber sealing ring (52); The movable core column (54) is equipped with a first cover plate (51) at one end, and the fixed core column (55) is equipped with a second cover plate (53) at one end. The other end of the movable core column (54) and the other end of the fixed core column (55) are axially slidingly engaged with each other. The rubber damping layer (56) and the partition solidification layer (57) are alternately stacked and surround the outer side of the movable core column (54) and the fixed core column (55); The rubber sealing ring (52) is connected between the first cover plate (51) and the second cover plate (53) and circumferentially seals the rubber damping layer (56) and the partition solidification layer (57); The first cover plate (51) or the second cover plate (53) is detachably connected to the support bracket.

9. The base for a power transformer according to claim 1, characterized in that, The wheel assembly (7) includes a telescopic bracket (71) and heavy-duty casters (72) mounted on the telescopic bracket (71). The telescopic bracket (71) is hinged to the load-bearing bracket via a pin. When the telescopic support (71) is in the extended state, the heavy-duty caster (72) contacts the ground to support the load-bearing support, and the second vibration damping component (5) is detached from the ground; When the retractable support (71) is in the retracted state, the heavy-duty caster (72) is detached from the ground, and the second vibration damping component (5) is in contact with the ground to support the load-bearing support.

10. A power transformer, characterized in that, The base for the power transformer as described in any one of claims 1-9 is installed at the bottom of the power transformer.

Images