A shock absorbing base for a transformer

Abstract

The utility model belongs to transformer technical field, especially a shock absorbing base of transformer, it is personally experienced sth, including: lower track, fixed mounting is in the installation base, upper track is connected with the bottom frame of transformer main body fixedly, and is supported on the lower track slidingly, composite elastomer fills in and is set between upper track and lower track, and with both shape is matched, composite elastomer includes by upper to lower layer stack setting upper reinforcing layer, intermediate elastic layer and lower reinforcing layer, connecting piece, vertically through and connect upper track, upper reinforcing layer, intermediate elastic layer, lower reinforcing layer and lower track, form integral load bearing structure, through above-mentioned technical scheme, the utility model can obtain a kind of structure integral, the shock absorbing base of transformer of easy installation.

Description

Technical Field

[0001] This utility model belongs to the field of transformer technology, and specifically refers to a shock-absorbing base for a transformer. Background Technology

[0002] Transformers are core equipment in power systems, used to transform voltage to meet different power demands. Dry-type transformers are widely used in high-rise buildings, hospitals, data centers, and other locations with high safety requirements due to their advantages such as good fire resistance and easy maintenance.

[0003] While some existing seismic bases possess a certain degree of vibration isolation, they typically employ multiple independently arranged elastic elements. This modular structure suffers from poor overall integrity, requiring individual alignment and assembly during on-site installation. This cumbersome process makes it difficult to ensure uniform stress distribution across the elastic elements, and component misalignment can easily occur during vibration, affecting both the vibration isolation effect and post-earthquake recovery capability. Therefore, there is an urgent need for a transformer vibration damping base with strong overall structural integrity and ease of installation. Utility Model Content

[0004] This invention achieves overall modularity of the base by setting an integral composite elastomer that matches the shape of the upper and lower tracks, and by connecting the various components vertically through the connectors to form an integral load-bearing structure, thereby solving the problems mentioned in the background art.

[0005] The purpose of this utility model is achieved as follows: a shock-absorbing base for a transformer, comprising: The lower track is fixedly installed on the mounting base; The upper rail is fixedly connected to the bottom frame of the transformer body and is slidably supported on the lower rail; A composite elastomer is filled between the upper and lower tracks and matches their shapes. The composite elastomer includes an upper reinforcing layer, a middle elastic layer and a lower reinforcing layer stacked from top to bottom. The connector vertically penetrates and connects the upper track, upper reinforcing layer, middle elastic layer, lower reinforcing layer and lower track to form an integral load-bearing structure.

[0006] The present invention is further configured such that the upper reinforcing layer and the middle elastic layer, and the lower reinforcing layer and the middle elastic layer are connected by mutually matching concave and convex structures.

[0007] The present invention is further configured such that the concave-convex structure is a dovetail-shaped concave-convex structure.

[0008] The present invention is further configured such that the connecting member is a double-ended bolt, and the two ends of the double-ended bolt are locked and fixed by nuts.

[0009] The present invention is further configured such that the lower track has upwardly extending lower limiting skirts on both sides, and the upper track has downwardly extending upper limiting skirts on both sides.

[0010] The present invention is further configured such that the upper limiting skirt and the lower limiting skirt partially overlap in the vertical direction to form a horizontal displacement limiting structure.

[0011] The present invention is further configured such that the intermediate elastic layer is made of a foamed synthetic resin material.

[0012] By adopting the above technical solution, the beneficial effects that this utility model can achieve are: 1. By vertically penetrating and connecting the upper rail, composite elastomer, and lower rail with connectors, the components are integrated into a whole module, avoiding the tedious process of assembling them one by one on site, thus improving installation efficiency and structural integrity.

[0013] 2. By matching the shapes of the upper reinforcing layer, the middle elastic layer, and the lower reinforcing layer with the upper and lower tracks, the composite elastomer undergoes overall shear deformation under horizontal vibration, uniformly absorbing vibration energy and improving horizontal seismic isolation performance.

[0014] 3. Through the sliding fit between the dovetail-shaped concave and convex structure and the upper and lower tracks, the dovetail slope generates additional friction when vibration displacement occurs, forming a positive feedback mechanism where the greater the deformation, the stronger the energy consumption, thus improving the energy consumption capacity and the reset capacity. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is an enlarged structural diagram of part A of this utility model. The reference numerals in the diagram are: 1. Transformer body; 2. Bottom frame; 3. Lower rail; 4. Upper rail; 5. Composite elastomer; 50. Upper reinforcing layer; 51. Middle elastic layer; 52. Lower reinforcing layer; 6. Lower limiting skirt; 7. Upper limiting skirt; 8. Connecting piece. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-2 : Example 1:

[0017] This embodiment provides a shock-absorbing base for a transformer, comprising: Lower track 3 is fixedly installed on the mounting base; The upper track 4 is fixedly connected to the bottom frame 2 of the transformer body 1 and is slidably supported on the lower track 3; A composite elastomer 5 is filled between the upper track 4 and the lower track 3 and matches the shape of both. The composite elastomer 5 includes an upper reinforcing layer 50, a middle elastic layer 51 and a lower reinforcing layer 52 stacked from top to bottom. The connector 8 vertically penetrates and connects the upper track 4, the upper reinforcing layer 50, the middle elastic layer 51, the lower reinforcing layer 52, and the lower track 3 to form an integral load-bearing structure.

[0018] The lower track 3 is the bottom load-bearing component of the entire vibration damping base, and its overall shape is long and narrow. The lower track 3 can be directly anchored to the concrete foundation using anchor bolts to achieve a fixed connection with the foundation. The upper surface of the lower track 3 is flat and is used to support the composite elastic body 5 above it. The two sides of the lower track 3 are integrally formed with upward-extending lower limiting skirts 6, which extend continuously along the length of the lower track 3 to form the retaining wall structure on both sides.

[0019] The upper rail 4 is a component directly connected to the bottom frame 2 of the transformer body 1, and its overall shape matches that of the lower rail 3. The upper rail 4 is fixedly connected to the bottom frame 2 of the transformer body 1 by bolts, achieving integrated installation with the transformer. The upper rail 4 is slidably supported on the lower rail 3, that is, the lower surface of the upper rail 4 is in contact with the upper surface of the composite elastic body 5, and is supported on the lower rail 3 by the composite elastic body 5. There is no direct rigid fixed connection between the upper rail 4 and the lower rail 3, allowing relative sliding between the two in the horizontal direction. The upper rail 4 has an integrally formed upper limiting skirt 7 extending downward on both sides, which extends continuously along the length of the upper rail 4 to form a baffle structure on both sides.

[0020] The overall shape of the composite elastomer 5 matches the space between the upper track 4 and the lower track 3, filling the space between them. The composite elastomer 5 employs a three-layer composite structure, with an upper reinforcing layer 50, a middle elastic layer 51, and a lower reinforcing layer 52 stacked sequentially from top to bottom. The upper reinforcing layer 50 and the lower reinforcing layer 52 can be made of metallic materials, possessing a certain structural strength, and are used to connect with the upper track 4 and the lower track 3 and transmit loads. The middle elastic layer 51 can be made of foamed synthetic resin material, possessing good elasticity and compression resilience, and is the main functional layer for absorbing vibration energy.

[0021] The upper reinforcing layer 50 and the intermediate elastic layer 51 are connected by a matching concave-convex structure. Specifically, the lower surface of the upper reinforcing layer 50 has multiple protrusions integrally formed, and the upper surface of the intermediate elastic layer 51 has grooves that match the shape of the protrusions, with the protrusions embedding into the grooves to form an interlocking connection. Similarly, the upper surface of the lower reinforcing layer 52 has multiple protrusions integrally formed, and the lower surface of the intermediate elastic layer 51 has grooves that match the shape of the protrusions, with the protrusions embedding into the grooves to form an interlocking connection. This concave-convex connection structure enhances the interlayer bonding force and prevents relative slippage between the layers during vibration.

[0022] The protrusions and grooves are dovetail-shaped, meaning the cross-section of the protrusion is an isosceles trapezoid, with the lower base at the root and the upper base at the end, creating a shape that is wider at the root and narrower at the end. The cross-section of the groove matches the protrusion, being wider at the opening and narrower at the bottom. After the protrusion is embedded in the groove, due to the "wider outside, narrower inside" structure of the dovetail shape, the protrusion cannot be vertically removed from the groove; it can only slide relative to the groove in the horizontal direction. The dovetail-shaped protrusions and grooves are arranged in an array along the horizontal direction, covering the entire contact surface and ensuring uniform force distribution.

[0023] After the composite elastomer 5 is assembled, the upper track 4, upper reinforcing layer 50, middle elastic layer 51, lower reinforcing layer 52, and lower track 3 are vertically connected into a single unit via connector 8. Connector 8 uses double-ended bolts, which are rod-shaped components with threads at both ends. Corresponding positions on the upper track 4, upper reinforcing layer 50, middle elastic layer 51, lower reinforcing layer 52, and lower track 3 are provided with through holes for the double-ended bolts to pass through, the diameter of which is larger than the diameter of the double-ended bolts. The double-ended bolts pass sequentially from top to bottom through the through holes in the upper track 4, upper reinforcing layer 50, middle elastic layer 51, lower reinforcing layer 52, and lower track 3, with their ends extending beyond the upper surface of the upper track 4 and the lower surface of the lower track 3, respectively. The upper end of the double-ended bolt is locked with a nut, and the lower end is also locked with a nut. By tightening the nuts at both ends, the components are pressed together to form an integral load-bearing structure. The design of having a through-hole diameter larger than the diameter of the double-ended bolt allows the double-ended bolt to provide clamping force in the vertical direction, but does not restrict the relative sliding of the upper rail 4 and the lower rail 3 in the horizontal direction.

[0024] The upper limiting skirt 7 and the lower limiting skirt 6 partially overlap in the vertical direction, meaning the lower end of the upper limiting skirt 7 is lower than the upper end of the lower limiting skirt 6, and there is an overlapping area between them on the vertical projection plane. This overlapping structure forms a horizontal displacement limiting structure: when the horizontal displacement of the upper rail 4 relative to the lower rail 3 exceeds the design range, the inner surface of the upper limiting skirt 7 and the outer surface of the lower limiting skirt 6 come into contact with each other, preventing further displacement and playing a mechanical limiting role, preventing excessive displacement of the transformer from damaging the connecting busbar or causing overturning. A gap is left between the upper end face of the lower limiting skirt 6 and the lower end face of the upper limiting skirt 7, and the two do not come into contact under normal use conditions, so they do not affect the free sliding of the upper rail 4.

[0025] Under normal conditions, connector 8 pre-tightens all components into a single unit, and the intermediate elastic layer 51 bears the weight of the transformer. During horizontal vibration, the composite elastic body 5 dissipates energy through shear deformation, and the dovetail slope generates friction to assist in energy dissipation; connector 8 moves with the lower track 3 but does not restrict sliding, while maintaining interlayer adhesion. During vertical vibration, the intermediate elastic layer 51 compresses to absorb energy. When the displacement exceeds the limit, the lower limiting skirt 6 contacts the upper limiting skirt 7 to stop. After the vibration ends, the elastic restoring force resets the upper track 4, the dovetail structure guides, and connector 8 keeps all layers aligned.

[0026] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A shock-absorbing base for a transformer, characterized in that, include: The lower track (3) is fixedly installed on the mounting base; The upper track (4) is fixedly connected to the bottom frame (2) of the transformer body (1) and is slidably supported on the lower track (3); A composite elastomer (5) is filled between the upper track (4) and the lower track (3) and matches the shape of both. The composite elastomer (5) includes an upper reinforcing layer (50), an intermediate elastic layer (51) and a lower reinforcing layer (52) stacked from top to bottom. The connector (8) vertically penetrates and connects the upper rail (4), the upper reinforcing layer (50), the middle elastic layer (51), the lower reinforcing layer (52), and the lower rail (3) to form an integral load-bearing structure.

2. The vibration damping base for a transformer according to claim 1, characterized in that, The upper reinforcing layer (50) and the middle elastic layer (51), as well as the lower reinforcing layer (52) and the middle elastic layer (51), are connected by mutually matching concave and convex structures.

3. The shock-absorbing base for a transformer according to claim 2, characterized in that, The concave-convex structure is a dovetail-shaped concave-convex structure.

4. The vibration damping base for a transformer according to claim 1, characterized in that, The connector (8) is a double-ended bolt, and the two ends of the double-ended bolt are locked and fixed by nuts.

5. The vibration damping base for a transformer according to claim 1, characterized in that, The lower track (3) has upwardly extending lower limiting skirts (6) on both sides, and the upper track (4) has downwardly extending upper limiting skirts (7) on both sides.

6. The vibration damping base for a transformer according to claim 5, characterized in that, The upper limiting skirt (7) and the lower limiting skirt (6) partially overlap in the vertical direction to form a horizontal displacement limiting structure.

7. The vibration damping base for a transformer according to claim 1, characterized in that, The intermediate elastic layer (51) is made of foamed synthetic resin material.

Images