Alloy steel spring washer

Abstract

The utility model discloses an alloy steel spring washer relates to fastener technical field, including washer main part, limit ring and antiskid boss, washer main part includes upper elastic layer, intermediate shock attenuation layer and lower elastic layer, upper elastic layer and lower elastic layer symmetrically set, the top of upper elastic layer and the bottom of lower elastic layer all are equipped with open type wave structure, and two open type wave structures staggered arrangement is established, washer main part inside is equipped with annular groove, the inside limit ring of annular groove is equipped with. The utility model discloses through the open type wave structure of symmetric setting of upper elastic layer and lower elastic layer, and two staggered distribution, form two -way elastic constraint, this structure changes the anti -loose mode of traditional washer only relying on one -way elastic deformation, can continuously provide stable pre -tightening force compensation under the working condition of long -term vibration, high temperature or load change, effectively avoid the anti -loose failure of elastic fatigue, and the reliability of washer under complex working condition has been improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, specifically to an alloy steel spring washer. Background Technology

[0002] Spring washers can prevent loosening and increase preload. They are widely used in load-bearing and non-load-bearing structures of general mechanical products. They are characterized by low cost, easy installation, and suitability for parts that are frequently assembled and disassembled.

[0003] However, existing alloy steel spring washers mostly adopt a single open or corrugated structure, relying solely on their own elastic deformation to achieve the anti-loosening effect. Under long-term vibration, high temperature, or load variation conditions, they are prone to elastic fatigue, leading to anti-loosening failure. At the same time, the inner diameter of traditional washers is fixed, which cannot be adapted to bolts of different specifications, requiring the stocking of multiple models and increasing usage costs. In addition, traditional structures lack effective shock absorption and buffering designs, and vibration energy is easily transmitted to the connecting parts, affecting the service life of the equipment. Therefore, we propose an alloy steel spring washer. Utility Model Content

[0004] In view of the problems existing in the above-mentioned alloy steel spring washers, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide an alloy steel spring washer that solves the problems of existing alloy steel spring washers, which mostly adopt a single open or wave-shaped structure and rely solely on their own elastic deformation to achieve the anti-loosening effect. Under long-term vibration, high temperature or load change conditions, elastic fatigue will easily occur, leading to anti-loosening failure. At the same time, the inner diameter of traditional washers is fixed, which cannot be adapted to bolts of different specifications. Multiple models need to be stocked, increasing the cost of use. In addition, the traditional structure lacks an effective shock absorption and buffer design, and vibration energy is easily transmitted to the connecting parts, affecting the service life of the equipment.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An alloy steel spring washer includes a washer body, a limiting ring, and an anti-slip protrusion. The washer body includes an upper elastic layer, a middle shock-absorbing layer, and a lower elastic layer. The upper and lower elastic layers are symmetrically arranged. The top of the upper elastic layer and the bottom of the lower elastic layer are provided with open-type corrugated structures, and the two open-type corrugated structures are staggered. The inside of the washer body is provided with an annular groove, and the limiting ring is provided inside the annular groove.

[0008] Preferably, the intermediate damping layer has a honeycomb-shaped hollow structure, and the interior of the intermediate damping layer is filled with high-temperature resistant nitrile rubber.

[0009] Preferably, the top and bottom of the limiting ring are provided with elastic protrusions, and the interior of the annular groove is provided with slots, and the multiple elastic protrusions are respectively engaged with the multiple slots.

[0010] Preferably, the bottom of the lower elastic layer is provided with multiple anti-slip protrusions.

[0011] Preferably, the limiting ring is a shape memory alloy ring.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0013] 1. This utility model utilizes an open-type waveform structure with symmetrically arranged upper and lower elastic layers, which are staggered to form a bidirectional elastic constraint. This structure changes the traditional method of anti-loosening that relies solely on unidirectional elastic deformation. Under conditions of long-term vibration, high temperature, or load changes, it can continuously provide stable preload compensation, effectively avoiding anti-loosening failure caused by elastic fatigue, and significantly improving the reliability of the gasket under complex working conditions. At the same time, by setting a shape memory alloy limiting ring in the annular groove inside the gasket body, the inner diameter of the limiting ring can be changed by temperature adjustment according to the actual bolt specifications, realizing the adaptation to different bolt specifications. There is no need to stock multiple types of washers, reducing the types of spare parts inventory, lowering usage costs, and improving assembly flexibility.

[0014] 2. This utility model utilizes a honeycomb-shaped hollow structure in the intermediate shock-absorbing layer, filled with high-temperature resistant nitrile rubber. The honeycomb structure disperses vibration stress, and combined with the elastic buffering properties of nitrile rubber, it efficiently absorbs vibration energy generated during equipment operation. This improves vibration energy absorption efficiency, prevents vibration energy from being directly transmitted to the connectors, reduces wear and loosening of the connectors due to vibration, and extends the overall service life of the connectors and the equipment. Simultaneously, multiple hemispherical anti-slip protrusions at the bottom of the lower elastic layer ensure a tight fit to the connector surface during assembly. These protrusions increase the friction between the gasket and the connector, preventing relative sliding of the gasket during equipment operation or vibration, further enhancing the stability of the overall assembly structure. Together with the bidirectional waveform structure, this provides double anti-loosening protection, significantly reducing the risk of loosening. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of the open-type waveform structure of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Washer body; 2. Limiting ring; 3. Anti-slip protrusion; 4. Upper elastic layer; 5. Middle shock-absorbing layer; 6. Lower elastic layer; 7. Open-type wave structure; 8. Annular groove; 9. High-temperature resistant nitrile rubber; 10. Elastic protrusion; 11. Slot. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] This utility model discloses an alloy steel spring washer.

[0023] This utility model provides, for example Figure 1-3 An alloy steel spring washer is shown, comprising a washer body 1, a limiting ring 2, and an anti-slip protrusion 3. The washer body 1 includes an upper elastic layer 4, a middle shock-absorbing layer 5, and a lower elastic layer 6. The upper elastic layer 4 and the lower elastic layer 6 are symmetrically arranged. The top of the upper elastic layer 4 and the bottom of the lower elastic layer 6 are provided with an open-type corrugated structure 7, and the two open-type corrugated structures are staggered. The inside of the washer body 1 is provided with an annular groove 8, and the limiting ring 2 is provided inside the annular groove 8. The reverse corrugated structures of the upper and lower elastic layers form a bidirectional elastic constraint force. Combined with the mechanical limiting of the anti-slip protrusion 3, the probability of loosening failure is reduced.

[0024] This utility model discloses an alloy steel spring washer, wherein the intermediate damping layer 5 has a honeycomb hollow structure and is filled with high-temperature resistant nitrile rubber 9, which improves the vibration energy absorption efficiency and effectively protects the connecting parts.

[0025] This utility model discloses an alloy steel spring washer, wherein the top and bottom of the limiting ring 2 are provided with elastic protrusions 10, and the interior of the annular groove 8 is provided with slots 11. The multiple elastic protrusions 10 are respectively engaged with the multiple slots 11 to facilitate the fixing of the limiting ring 2.

[0026] This utility model discloses an alloy steel spring washer, wherein the bottom of the lower elastic layer 6 is provided with multiple anti-slip protrusions 3, which can increase the friction between the washer and the connecting parts and prevent the washer from sliding relative to each other during equipment operation or vibration.

[0027] This utility model discloses an alloy steel spring washer, wherein the limiting ring 2 is a shape memory alloy ring, the inner diameter of which can be adjusted by temperature to adapt to bolts of different specifications, reducing the number of washer models in stock and lowering the cost of use.

[0028] During use, the washer is heated according to the specific specifications of the bolt to be assembled. The entire washer is heated, causing the shape memory alloy retaining ring 2 to deform under heat. Its inner diameter gradually expands or shrinks to match the outer diameter of the target bolt. During adjustment, the elastic protrusion 10 on the outer ring of the retaining ring 2 maintains initial contact with the groove 11 in the annular groove 8 of the washer body 1, ensuring that the retaining ring 2 does not disengage from the groove during adjustment. Once the inner diameter is properly matched, heating is stopped, and the washer is allowed to cool naturally. The shape memory alloy retaining ring 2 returns to its stable shape, and the elastic protrusion 10... The washer is fully inserted into the slot 11, fixing the limiting ring 2 to the washer body 1 and completing the bolt specification adaptation. The adapted washer is then fitted onto the bolt, with the anti-slip protrusion 3 at the bottom of the lower elastic layer 6 facing the surface of the equipment connector. When the bolt is tightened, the bolt head applies downward pressure to the upper elastic layer 4 of the washer. The open-type wave structure 7 of the upper elastic layer 4 undergoes elastic deformation under pressure, simultaneously transmitting the pressure to the intermediate damping layer 5. The honeycomb structure of the intermediate damping layer 5 and the nitrile rubber are simultaneously compressed, causing the rubber to undergo elastic deformation. The honeycomb structure further disperses the pressure, forming a buffer. The pressure continues to be transmitted to the lower elastic layer 6, and the waveform structure of the lower elastic layer 6 also deforms, forming an opposing elastic force with the upper elastic layer 4, which together provides stable preload compensation for the bolt. During this process, the anti-slip protrusions 3 of the lower elastic layer 6 closely adhere to the surface of the connector, limiting the relative sliding between the washer and the connector through friction. During equipment operation, when vibration, load changes, or temperature fluctuations occur, the various structures of the washer work together. If vibration occurs, the nitrile rubber of the middle damping layer 5 absorbs vibration energy through elastic expansion and contraction, while the honeycomb structure weakens the transmission of vibration stress, preventing vibration from directly affecting the bolt and connector. The bidirectional waveform structure of the upper and lower elastic layers 6 continuously compensates for the preload loss of the bolt caused by vibration or thermal expansion and contraction, preventing the bolt from loosening. The shape memory alloy limiting ring 2 always maintains a matching state with the bolt. Even if the temperature fluctuates slightly, its stable shape can prevent gaps between the washer and the bolt. The friction of the anti-slip protrusions 3 further hinders the sliding of the washer. Multiple protections ensure the stability of the overall connection structure and effectively solve the problem of easy failure of traditional washers.

[0029] The above description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An alloy steel spring washer, comprising a washer body (1), a limiting ring (2), and an anti-slip protrusion (3), characterized in that, The washer body (1) includes an upper elastic layer (4), a middle shock-absorbing layer (5) and a lower elastic layer (6). The upper elastic layer (4) and the lower elastic layer (6) are symmetrically arranged. The top of the upper elastic layer (4) and the bottom of the lower elastic layer (6) are provided with open-type wave structures (7), and the two open-type wave structures are staggered. The inside of the washer body (1) is provided with an annular groove (8), and the inside of the annular groove (8) is provided with a limiting ring (2).

2. The alloy steel spring washer according to claim 1, characterized in that, The intermediate damping layer (5) has a honeycomb hollow structure, and the interior of the intermediate damping layer (5) is filled with high-temperature resistant nitrile rubber (9).

3. The alloy steel spring washer according to claim 1, characterized in that, The top and bottom of the limiting ring (2) are provided with elastic protrusions (10), and the inside of the annular groove (8) is provided with slots (11). The multiple elastic protrusions (10) are respectively engaged with the multiple slots (11).

4. The alloy steel spring washer according to claim 1, characterized in that, The bottom of the lower elastic layer (6) is provided with multiple anti-slip protrusions (3).

5. The alloy steel spring washer according to claim 1, characterized in that, The limiting ring (2) is a shape memory alloy ring.

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