Elastic combined cushion block

Abstract

The utility model belongs to the technical field of cushion blocks, and particularly discloses an elastic combined cushion block which comprises an elastic pressing plate, a supporting cushion plate, a limiting supporting piece, a second auxiliary cushion block, a first auxiliary cushion block and a base. Wherein a limiting boss is arranged on the lower surface of the base, the second auxiliary cushion block is installed on the upper side of the first auxiliary cushion block, and the first auxiliary cushion block is installed on the base; the limiting supporting piece is installed on the upper surface of the second auxiliary cushion block, the supporting base plate is embedded in the upper surface of the limiting supporting piece, side arms are arranged on the front side and the rear side of the upper surface of the limiting supporting piece, and limiting groove holes are formed in the side arms on the two sides; an elastic pressing plate is arranged on the upper side of the limiting supporting piece. The auxiliary cushion block of the combined cushion block is simple in structure and flexible in combination, meets the size requirements of different cushion blocks, enables the combined cushion block to have good universality, effectively increases the creepage distance through the additionally arranged skirt edge structure, reduces the use amount of the cushion blocks, and has good economic benefits.

Description

Technical Field

[0001] This utility model relates to the field of pad technology, specifically to an elastic combination pad. Background Technology

[0002] Spacers are support and clamping components for dry-type transformer windings. They are typically made of unsaturated resin, glass fiber, and fillers, molded together and combined with silicone pads to support and clamp the transformer coils. While this type of spacer is mature and stable, it lacks versatility, often requiring custom molds for different sizes, leading to high costs. Furthermore, the clamping force point of this type of spacer is usually located in the hollow main channel between the high and low voltage windings. When the windings expand due to heat during operation, the expansion and contraction of the spacer is much smaller than that of the windings, easily causing uneven stress and breakage. Some modular spacers are also available on the market, offering flexible combinations, but they also suffer from the aforementioned breakage risk. Like conventional spacers, they lack heat dissipation channels, potentially blocking the winding's cooling airflow and hindering heat dissipation. Utility Model Content

[0003] The purpose of this invention is to provide an elastic modular pad to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an elastic combined pad, comprising:

[0005] Elastic pressure plate, support pad, limiting support, second auxiliary pad, first auxiliary pad, base;

[0006] The base has a limiting boss on its lower surface, the second auxiliary pad is installed on the upper side of the first auxiliary pad, and the first auxiliary pad is installed on the base.

[0007] The limiting support is installed on the upper surface of the second auxiliary pad, the support pad is embedded in the upper surface of the limiting support, and the upper surface of the limiting support is provided with side arms on both the front and rear sides, and the side arms on both sides are provided with limiting slots.

[0008] The upper side of the limiting support is provided with an elastic pressure plate, and both ends of the elastic pressure plate are provided with cylindrical limiting pins. The two ends of the cylindrical limiting pins are movably inserted into the limiting slots on both sides.

[0009] Preferably, the base of the pad is rectangular and has honeycomb-shaped circular pores that extend from the bottom of the base along the center line to both sides at a 45° angle through the base.

[0010] Preferably, the limiting boss together with the base is provided with an arc-shaped insulating cylinder limiting groove.

[0011] Preferably, the limiting boss of the base is a cone shape with an angle of 5° to the vertical direction, and the depth of the insulating cylinder limiting groove in the limiting boss extends to 10mm inside the lower surface of the base.

[0012] Preferably, the upper surface of the base is provided with a positioning blind hole, and the first auxiliary pad is also provided with a positioning blind hole corresponding to the position of the positioning blind hole on the base. The positioning blind holes of the second auxiliary pad, the first auxiliary pad, and the base are connected by positioning pins, and the positioning pins extend upward and are inserted into the limiting support.

[0013] Preferably, the number of positioning blind holes on the second auxiliary pad, the first auxiliary pad, and the base is the same as the number of positioning pins, and there are at least two positioning pins.

[0014] Preferably, the support pad is made of high-strength steel plate, and the thickness of the support pad is 5mm-8mm.

[0015] Preferably, both the second auxiliary pad and the first auxiliary pad have skirts at their edges, and the lateral width of the second auxiliary pad is 10mm-20mm shorter than that of the first auxiliary pad.

[0016] Preferably, the elastic pressure plate is made of high-strength elastic steel, and the elastic pressure plate is designed as an outwardly convex arched structure, with a support platform provided on the top of the elastic pressure plate.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] The honeycomb pore structure of the base in this design provides a heat dissipation channel while ensuring the support of the pad, preventing blockage of the winding air passage and effectively improving heat dissipation efficiency.

[0019] The tapered limiting boss on the base of the combined pad block facilitates installation and limits the high and low voltage windings to ensure uniform spacing. At the same time, the limiting groove can be used to fix the insulation cylinder added between the high and low voltage windings and extend the height of the insulation cylinder to increase the creepage distance.

[0020] The bow-shaped elastic pressure plate of this combined pad disperses the clamping force to both ends of the pad, which can be transmitted to the high and low voltage windings to form effective support, avoiding the situation in traditional structures where the pressure is applied directly to the middle position below the pad, causing the pad to break easily.

[0021] The elastic pressure plate structure of this solution can absorb and release the expansion and contraction of the windings at different temperatures, avoiding the excessive compression when the winding temperature is high and the loosening of the windings when the winding temperature is low, which is a problem in traditional structures. In addition, the elastic pressure plate can have a certain vibration damping effect and reduce noise.

[0022] The auxiliary pads of this combined pad have a simple structure and flexible combination, meeting the requirements of different pad size, making the combined pad have good versatility. In addition, its added skirt structure effectively increases the creepage distance and reduces the amount of pads used, resulting in good economic benefits. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the base of this utility model;

[0025] Figure 3 This is a schematic diagram of the lower surface structure of the base of this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the first auxiliary pad of this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the limiting support component of this utility model;

[0028] Figure 6 This is a schematic diagram of the structure of the elastic pressure plate of this utility model.

[0029] In the diagram: 1. Elastic pressure plate; 1.1. Support platform; 1.2. Cylindrical limiting pin; 2. Support pad; 3. Limiting support component; 3.1. Side arm; 3.2. Limiting slot; 4. Second auxiliary pad; 5. First auxiliary pad; 5.1. Skirt; 5.2. Positioning pin; 6. Base; 6.1. Limiting boss; 6.2. Insulating cylinder limiting groove; 6.3. Honeycomb round air hole; 6.4. Positioning blind hole. Detailed Implementation

[0030] 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.

[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Example 1:

[0033] Please see Figure 1-6 This utility model provides a technical solution: an elastic combined pad block, comprising: an elastic pressure plate 1, a support pad 2, a limiting support 3, a second auxiliary pad block 4, a first auxiliary pad block 5, and a base 6;

[0034] The base 6 has a limiting boss 6.1 on its lower surface. The second auxiliary pad 4 is mounted on the upper side of the first auxiliary pad 5, which is mounted on the base 6. The limiting support 3 is mounted on the upper surface of the second auxiliary pad 4. The support plate 2 is embedded in the upper surface of the limiting support 3. The upper surface of the limiting support 3 has side arms 3.1 on both the front and rear sides, and limiting slots 3.2 are formed on both sides of the side arms 3.1. An elastic pressure plate 1 is provided on the upper side of the limiting support 3. Both ends of the elastic pressure plate 1 are provided with cylindrical limiting pins 1.2, which are movably inserted into the limiting slots 3.2 on both sides. The base 6 of the pad is rectangular and has honeycomb-shaped circular air holes 6.3. The honeycomb-shaped circular air holes 6.3 extend from the bottom of the base 6 along the center line to both sides at a 45° angle through the base 6.

[0035] Analysis of the above content: The base 6 meets the height and insulation distance requirements through the first auxiliary pad 5 and the second auxiliary pad 4. Combined with the combination of the limiting support 3 and the elastic pressure plate 1, it forms an elastic combined pad. The base 6 directly acts on the high and low voltage windings of the dry-type transformer. Its honeycomb vents 6.3 realize the airflow for heat dissipation. The clamping force is adjusted by the pressure nails acting on the elastic pressure plate 1. The elastic pressure plate 1 adapts to the expansion and contraction of the limiting slot 3.2, transmitting the force to the high and low voltage windings to achieve clamping and absorb and release the expansion and contraction deformation of the high and low voltage windings.

[0036] Example 2:

[0037] Please see Figure 1-6 This utility model provides a technical solution based on Embodiment 1: the limiting boss 6.1 together with the base 6 is provided with an arc-shaped insulating cylinder limiting groove 6.2. The limiting boss 6.1 of the base 6 is conical with an angle of 5° to the vertical direction, and the insulating cylinder limiting groove 6.2 in the limiting boss 6.1 extends to 10mm inside the lower surface of the base 6.

[0038] Example 3:

[0039] Please see Figure 1-6This utility model provides a technical solution based on Embodiment 1: The upper surface of the base 6 is provided with positioning blind holes 6.4, and the first auxiliary pad 5 is also provided with positioning blind holes 6.4 corresponding to the positions of the positioning blind holes 6.4 on the base 6. The positioning blind holes 6.4 between the second auxiliary pad 4, the first auxiliary pad 5, and the base 6 are connected by positioning pins 5.2. The positioning pins 5.2 extend upwards and are inserted into the limiting support 3. The number of positioning blind holes 6.4 on the second auxiliary pad 4, the first auxiliary pad 5, and the base 6 is the same as the number of positioning pins 5.2, and there are at least two positioning pins 5.2.

[0040] Analysis of the above content: The auxiliary pads (second auxiliary pad 4, first auxiliary pad 5) are versatile. Based on the cooperation of the positioning pin 5.2 and the positioning blind hole 6.4, the quantity can be increased or decreased according to actual needs, and their length can also be combined according to the assembly structure requirements.

[0041] Example 4:

[0042] Please see Figure 1-6 Based on Embodiment 1, this utility model provides a technical solution: the material of the support pad 2 is a high-strength steel plate, and the thickness of the support pad 2 is 5mm-8mm.

[0043] Example 5:

[0044] Please see Figure 1-6 Based on Embodiment 1, this utility model provides a technical solution: both the second auxiliary pad 4 and the first auxiliary pad 5 are provided with skirts 5.1 at their edges, and the lateral width of the second auxiliary pad 4 is 10mm-20mm shorter than that of the first auxiliary pad 5.

[0045] Analysis of the above content: The skirt 5.1 is set to increase the creepage distance, and the second auxiliary pad 4 and the first auxiliary pad 5 are combined to form a trapezoidal structure to avoid the influence of the iron yoke.

[0046] Example 6:

[0047] Please see Figure 1-6 Based on Embodiment 1, this utility model provides a technical solution: the elastic pressure plate 1 is made of high-strength elastic steel, and the elastic pressure plate 1 is designed as an outwardly convex bow-shaped structure. A support platform 1.1 is provided on the top of the elastic pressure plate 1.

[0048] Analysis of the above content: The support platform 1.1 facilitates the support of the pressure nails.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be considered as limiting the scope of the claims.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flexible composite pad, characterized in that, include: Elastic pressure plate (1), support pad (2), limiting support (3), second auxiliary pad (4), first auxiliary pad (5), base (6); The base (6) has a limiting boss (6.1) on its lower surface, the second auxiliary pad (4) is installed on the upper side of the first auxiliary pad (5), and the first auxiliary pad (5) is installed on the base (6); The limiting support (3) is installed on the upper surface of the second auxiliary pad (4), the support pad (2) is embedded in the upper surface of the limiting support (3), and the upper surface of the limiting support (3) is provided with side arms (3.1) on both the front and rear sides, and the side arms (3.1) on both sides are provided with limiting slots (3.2). The upper side of the limiting support (3) is provided with an elastic pressure plate (1), and both ends of the elastic pressure plate (1) are provided with cylindrical limiting pins (1.2). The two ends of the cylindrical limiting pins (1.2) are movably inserted into the limiting slots (3.2) on both sides.

2. The elastic composite pad according to claim 1, characterized in that: The base (6) of the pad is rectangular and has honeycomb-shaped circular pores (6.3). The honeycomb-shaped circular pores (6.3) extend from the bottom of the base (6) along the center line to both sides at a 45° angle through the base (6).

3. The elastic composite pad according to claim 1, characterized in that: The limiting boss (6.1) together with the base (6) is provided with an arc-shaped insulating cylinder limiting groove (6.2).

4. The elastic composite pad according to claim 3, characterized in that: The limiting boss (6.1) of the base (6) is conical with an angle of 5° to the vertical direction, and the insulating cylinder limiting groove (6.2) in the limiting boss (6.1) extends to 10mm inside the lower surface of the base (6).

5. The elastic combined pad block according to claim 1, characterized in that: The upper surface of the base (6) is provided with a positioning blind hole (6.4). The first auxiliary pad (5) is also provided with a positioning blind hole (6.4) corresponding to the position of the positioning blind hole (6.4) on the base (6). The positioning blind holes (6.4) between the second auxiliary pad (4), the first auxiliary pad (5), and the base (6) are connected by positioning pins (5.2). The positioning pins (5.2) extend upward and are inserted into the limiting support (3).

6. The elastic composite pad according to claim 5, characterized in that: The number of positioning blind holes (6.4) on the second auxiliary pad (4), the first auxiliary pad (5), and the base (6) is the same as the number of positioning pins (5.2), and there are at least two positioning pins (5.2).

7. The elastic composite pad according to claim 1, characterized in that: The support plate (2) is made of high-strength steel plate, and the thickness of the support plate (2) is 5mm-8mm.

8. The elastic composite pad according to claim 1, characterized in that: Both the second auxiliary pad (4) and the first auxiliary pad (5) are provided with skirts (5.1) at their edges. The second auxiliary pad (4) is 10mm-20mm shorter in width than the first auxiliary pad (5).

9. The elastic composite pad according to claim 1, characterized in that: The elastic pressure plate (1) is made of high-strength elastic steel and is designed as an outwardly convex bow-shaped structure. A support platform (1.1) is provided on the top of the elastic pressure plate (1).

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