High-temperature-resistant disc spring with heat dissipation holes

Abstract

This utility model belongs to the field of disc spring technology, and in particular to a high-temperature resistant disc spring with heat dissipation holes. It includes a disc spring body with heat dissipation holes penetrating its upper and lower surfaces. A central shaft hole is located at the center of the disc spring body, and the heat dissipation holes are arranged in a ring around the central shaft hole. In this utility model, the ring-shaped heat dissipation holes and staggered design increase the heat dissipation area, accelerate heat dissipation, and prevent localized overheating. The disc spring body adopts a split design; if one part is damaged due to prolonged high temperature or wear, it can be replaced individually without replacing the entire body, reducing maintenance costs. The split design allows for independent opening of the heat dissipation holes, which, compared to a monolithic structure, provides more flexible distribution and enhances heat dissipation.

Description

Technical Field

[0001] This utility model belongs to the field of disc spring technology, specifically relating to a high-temperature resistant disc spring with heat dissipation holes. Background Technology

[0002] Disc springs are a special type of spring that resembles a circular washer in shape. They can provide sufficient elastic extension by stacking a considerable number of disc springs. Due to their variable stiffness characteristics and compact installation, they are widely used in the machinery industry, petroleum industry, automotive industry, and aerospace industry.

[0003] Disc springs are typically installed by passing a pin through their central shaft hole, and then secured with screws.

[0004] For example, in the prior art, Chinese utility model patent with authorization announcement number CN222315760U discloses "a disc spring with overload protection function", which includes a mounting assembly and a disc spring. The mounting assembly includes a mounting column and a positioning base. The mounting column is fixedly installed on the top of the positioning base, and the disc spring is inserted into the outside of the mounting column. The mounting assembly also includes a force-bearing cover, which is inserted into the top of the mounting column.

[0005] While existing disc springs, including those mentioned above, can meet general usage requirements, they generate a lot of heat due to repeated compression and rebound in high-load, high-frequency, or high-temperature operating environments. Existing disc springs lack heat-conducting structures, resulting in poor heat dissipation and making them prone to material performance degradation due to excessively high local temperatures.

[0006] To address the aforementioned issues, this application proposes a high-temperature resistant disc spring with heat dissipation holes. Utility Model Content

[0007] To address the aforementioned problems in the existing technology, this utility model provides a high-temperature resistant disc spring with heat dissipation holes, which is convenient to use, easy to dissipate heat, and has a long service life.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a high-temperature resistant disc spring with heat dissipation holes, comprising a disc spring body, wherein the disc spring body is provided with heat dissipation through holes penetrating its upper and lower surfaces, and a central shaft hole is provided at the center of the disc spring body, and the heat dissipation through holes are distributed in a ring around the central shaft hole.

[0009] Preferably, the disc spring body includes an upper spring plate and a lower spring plate that fit together.

[0010] The heat dissipation through-hole includes a first heat dissipation hole formed on the upper plate of the spring and a second heat dissipation hole formed on the lower plate of the spring;

[0011] The central shaft hole includes a first shaft hole in the upper plate of the spring and a second shaft hole in the lower plate of the spring, wherein the first shaft hole and the second shaft hole are coaxial.

[0012] Preferably, the first heat dissipation hole and the second heat dissipation hole are staggered.

[0013] Preferably, it further includes:

[0014] A positioning protrusion is fixed to the bottom surface of the upper spring plate, and a positioning groove adapted to the positioning protrusion is provided on the top surface of the lower spring plate.

[0015] Preferably, the cross-sectional shape of the heat dissipation hole is circular, elliptical, or polygonal.

[0016] Preferably, the disc spring body is a stainless steel or nickel-based alloy component.

[0017] Preferably, the top surface of the upper spring plate is a convex conical surface and the bottom surface is a flat surface, and the top surface of the lower spring plate is a flat surface and the bottom surface is a concave conical surface.

[0018] Preferably, the upper and lower surfaces of the upper spring plate and the lower spring plate are provided with a heat-insulating coating.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] In this invention, the annularly distributed heat dissipation holes and staggered design increase the heat dissipation area, accelerate heat dissipation, and avoid local overheating. The disc spring body adopts a split design, so if a piece is damaged due to long-term high temperature or wear, it can be replaced individually without replacing the whole body, thus reducing maintenance costs. The split design allows the heat dissipation holes to be opened independently, and compared with the integral structure, the distribution of the heat dissipation holes is more flexible, which is conducive to enhancing the heat dissipation effect.

[0021] Other additional advantages and benefits of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

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

[0024] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the diagram;

[0025] Figure 3 This is a front sectional view of the present invention.

[0026] Figure 4 This is an isometric structural diagram of multiple disc spring bodies stacked in this utility model.

[0027] In the figure: 1. Disc spring body; 11. Upper spring plate; 111. First shaft hole; 112. First heat dissipation hole; 113. Positioning protrusion; 12. Lower spring plate; 121. Second shaft hole; 122. Second heat dissipation hole; 123. Positioning groove. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1-4 The present invention provides the following technical solution: a high-temperature resistant disc spring with heat dissipation holes, comprising a disc spring body 1, wherein the disc spring body 1 is provided with heat dissipation through holes penetrating its upper and lower surfaces, and a central shaft hole is provided at the center of the disc spring body 1, and the heat dissipation through holes are distributed in a ring around the central shaft hole. After adopting the above solution, when subjected to axial load, the disc spring body 1 generates a reverse resistance due to elastic deformation, and the load is absorbed and released through the curvature change of the disc structure, which is consistent with the mechanical characteristics of the traditional disc spring body 1.

[0030] The heat dissipation holes play a key role in thermal management. During operation, the heat generated by the disc spring body 1 due to load cycles, contact friction, or high ambient temperature is transferred to the wall of the heat dissipation holes through the thermal conduction of the material body. Since the heat dissipation holes penetrate the upper and lower surfaces of the disc spring body 1 and are distributed in a ring around the central shaft hole, a radial heat flow channel with the central shaft hole as the core is formed.

[0031] When the disc spring body 1 is in a dynamic working environment or when there is air flow around it, the cold air from the outside can enter through the central shaft hole and diffuse towards the edge along the annularly distributed heat dissipation holes. It exchanges heat with the high-temperature disc spring body 1 material on the inner wall of the holes, carrying away the accumulated heat. If the disc spring body 1 is in a relatively static high-temperature environment, the heat dissipation holes will increase the surface area, promote natural convection and radiation heat dissipation, and accelerate the dissipation of heat to the surrounding environment.

[0032] This annular symmetrical heat dissipation hole design not only ensures the structural symmetry of the disc spring body 1, avoids stress concentration caused by the openings, and maintains the mechanical performance stability of the disc spring body 1, but also, by constructing an efficient heat conduction and convection path, promptly dissipates the heat generated during operation, keeping the temperature of the disc spring body 1 within the allowable temperature range of the material. This effectively delays the fatigue failure and elastic decay of the material under high temperature conditions, thereby achieving reliable and long-term operation of the disc spring body 1 under high temperature conditions.

[0033] Preferably, by Figure 1 As shown, in this embodiment, the disc spring body 1 includes an upper spring plate 11 and a lower spring plate 12 that are in contact with each other; the heat dissipation through holes include a first heat dissipation hole 112 opened on the upper spring plate 11 and a second heat dissipation hole 122 opened on the lower spring plate 12; the central shaft hole includes a first shaft hole 111 opened on the upper spring plate 11 and a second shaft hole 121 opened on the lower spring plate 12. The first shaft hole 111 and the second shaft hole 121 are coaxial. With the above solution, when in use, the upper spring plate 11 and the lower spring plate 12 form a load-bearing structure through the contact surface. When the axial load is applied to the disc spring body 1, the load is first borne by the disc-shaped curved surface of the upper spring plate 11, and then transmitted to the lower spring plate 12 through the friction and contact stress of the contact surface. The disc-shaped curved surfaces of the two springs undergo elastic deformation simultaneously, the radius of curvature increases, and a reverse restoring force is generated.

[0034] Since the first shaft hole 111 and the second shaft hole 121 are coaxial, the load is evenly distributed along the central axis, avoiding local stress concentration caused by eccentric load. This upper and lower plate fitting design is equivalent to transforming the load deformation characteristics of the traditional single disc spring into a series combination of two springs, which is especially suitable for high-temperature precision mechanical scenarios that require nonlinear stiffness characteristics.

[0035] In addition, the split design is beneficial to enhance heat dissipation. The contact surfaces of the upper spring plate 11 and the lower spring plate 12 serve as heat conduction interfaces, which quickly transfer the heat of the upper spring plate 11 to the lower spring plate 12. At the same time, the walls of the first heat dissipation hole 112 and the second heat dissipation hole 122 form a continuous heat conduction path, which shortens the heat conduction distance from the inside of the spring to the surface.

[0036] Meanwhile, the disc spring body 1 adopts a split design, so if one disc is damaged due to long-term high temperature or wear, it can be replaced individually without replacing the whole body, thus reducing maintenance costs.

[0037] Preferably, by Figure 1 As shown in this embodiment, the first heat dissipation hole 112 and the second heat dissipation hole 122 are staggered. After adopting the above scheme, when in use, the first heat dissipation hole 112 and the second heat dissipation hole 122 are connected to form a zigzag or spiral three-dimensional heat dissipation channel. When air passes through the staggered first heat dissipation hole 112 and the second heat dissipation hole 122, the positional shift of the channel cross section forces the fluid to change the flow direction, triggering a turbulence effect. The contact area and contact time between the fluid and the hole wall in the turbulent state increase, and the convective heat transfer efficiency is significantly improved, especially in low flow rate environments where efficient heat dissipation can still be maintained.

[0038] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, it also includes: a positioning protrusion 113 fixed to the bottom surface of the upper spring plate 11, and a positioning groove 123 adapted to the positioning protrusion 113 on the top surface of the lower spring plate 12. With the above solution, in use, the insertion structure formed by the positioning protrusion 113 and the positioning groove 123 reliably positions the connection between the upper spring plate 11 and the lower spring plate 12, improves the coaxiality of the first shaft hole 111 and the second shaft hole 121, and avoids vibration noise and additional wear caused by shaft hole eccentricity.

[0039] In addition, the insertion structure formed by the positioning protrusion 113 and the positioning groove 123 further increases the contact area between the upper spring plate 11 and the lower spring plate 12, thereby further improving the heat conduction efficiency.

[0040] Optionally, by Figure 1 As shown in this embodiment, the cross-sectional shape of the heat dissipation hole is circular, elliptical, or polygonal. With the above solution, heat dissipation holes of different shapes can be used in different working environments.

[0041] For heat dissipation holes with circular cross-sections, the inner walls of the flow channels are free of sharp corners, making them suitable for low-flow-rate or natural convection environments. For heat dissipation holes with elliptical cross-sections, the heat transfer rate along the long axis is higher than that of circular holes, making them suitable for scenarios with significant radial temperature gradients (such as axial heat dissipation of motor rotors). For heat dissipation holes with polygonal cross-sections, such as square or hexagonal polygonal holes, fluid separation is easily triggered at the corners, generating the Karman vortex street phenomenon, making them suitable for high-flow-rate and strong convection environments (such as automotive engine turbocharging systems).

[0042] Optionally, by Figure 1As shown in this embodiment, the disc spring body 1 is a stainless steel or nickel-based alloy component. With the above solution, stainless steel is suitable for low temperature or medium-high temperature (-200-650℃) environments, while nickel-based alloy is suitable for ultra-high temperature (300-1100℃) environments.

[0043] Nickel-based alloys come in many types and are suitable for different environments. For example, nickel-chromium-iron alloys are resistant to high-temperature oxidation (1100℃) and are suitable for high-temperature environments.

[0044] Preferably, by Figure 1 and Figure 3 As shown in this embodiment, the top surface of the upper spring plate 11 is an outwardly convex conical surface and the bottom surface is a flat surface, while the top surface of the lower spring plate 12 is a flat surface and the bottom surface is an inwardly concave conical surface. With the above scheme, when the axial pressure is applied to the top surface of the upper spring plate 11 during use, the outwardly convex curved surface converts the radial component force into the positive pressure of the contact surface, thereby increasing the contact stress between the upper spring plate 11 and the lower spring plate 12 and suppressing the slippage of the contact surface.

[0045] Preferably, by Figure 1 and Figure 4 As shown in this embodiment, the upper and lower surfaces of the upper spring plate 11 and the lower spring plate 12 are provided with heat insulation coatings. After adopting the above solution, when in use, the heat insulation coating is a zirconium oxide or ceramic-based composite coating (thickness 50-100μm), which further improves the high temperature resistance of the disc spring body 1.

[0046] Components not described in detail in this article are existing technologies.

[0047] The working principle and usage process of this utility model: When the disc spring body 1 of this utility model is subjected to axial load, the disc spring body 1 generates a reverse resistance due to elastic deformation. The load is absorbed and released through the curvature change of the disc structure, which is consistent with the mechanical characteristics of the traditional disc spring body 1.

[0048] The setting of heat dissipation holes plays a key role in thermal management. During operation, the heat generated by the disc spring body 1 due to load cycle, contact friction or high ambient temperature is transferred to the hole wall of the heat dissipation holes through the thermal conduction of the material body. Since the heat dissipation holes penetrate the upper and lower surfaces of the disc spring body 1 and are distributed in a ring around the central shaft hole, a radial heat flow channel with the central shaft hole as the core is formed.

[0049] When the disc spring body 1 is in a dynamic working environment or when there is air flow around it, the cold air from the outside can enter through the central shaft hole and diffuse towards the edge along the annularly distributed heat dissipation holes. It exchanges heat with the high-temperature disc spring body 1 material on the inner wall of the holes, carrying away the accumulated heat. If the disc spring body 1 is in a relatively static high-temperature environment, the heat dissipation holes will increase the surface area, promote natural convection and radiation heat dissipation, and accelerate the dissipation of heat to the surrounding environment.

[0050] This annular symmetrical heat dissipation hole design not only ensures the structural symmetry of the disc spring body 1, avoids stress concentration caused by the opening, and maintains the mechanical performance stability of the disc spring body 1, but also, by constructing an efficient heat conduction and convection path, promptly dissipates the heat generated during operation, keeping the temperature of the disc spring body 1 within the allowable temperature range of the material, effectively delaying the fatigue failure and elastic decay of the material under high temperature conditions, thus achieving reliable and long-term operation of the disc spring body 1 under high temperature conditions.

[0051] In addition, the disc spring body 1 adopts a split design, which includes an upper spring plate 11 and a lower spring plate 12 that fit together. When an axial load is applied to the disc spring body 1, the load is first borne by the disc-shaped curved surface of the upper spring plate 11 and then transmitted to the lower spring plate 12 through the friction and contact stress of the mating surface. The disc-shaped curved surfaces of the two springs undergo elastic deformation simultaneously, the radius of curvature increases, and a reverse restoring force is generated.

[0052] Since the first shaft hole 111 and the second shaft hole 121 are coaxial, the load is evenly distributed along the central axis, avoiding local stress concentration caused by eccentric load. This upper and lower plate fitting design is equivalent to transforming the load deformation characteristics of the traditional single disc spring into a series combination of two springs, which is especially suitable for high temperature precision mechanical scenarios that require nonlinear stiffness characteristics.

[0053] In addition, the split design is conducive to enhancing heat dissipation. The contact surfaces of the upper spring plate 11 and the lower spring plate 12 serve as a heat conduction interface, which quickly transfers the heat of the upper spring plate 11 to the lower spring plate 12. At the same time, the walls of the first heat dissipation hole 112 and the second heat dissipation hole 122 form a continuous heat conduction path, which shortens the heat conduction distance from the inside of the spring to the surface.

[0054] Meanwhile, the disc spring body 1 adopts a split design, so if one disc is damaged due to long-term high temperature or wear, it can be replaced individually without replacing the whole body, thus reducing maintenance costs.

[0055] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-temperature-resistant disc spring with heat dissipation holes, comprising a disc spring body (1), characterized in that: The disc spring body (1) is provided with heat dissipation through holes penetrating its upper and lower surfaces. The disc spring body (1) is provided with a central shaft hole at its center, and the heat dissipation through holes are distributed in a ring around the central shaft hole. The disc spring body (1) includes an upper spring plate (11) and a lower spring plate (12) that fit together. The heat dissipation through hole includes a first heat dissipation hole (112) opened on the upper plate of the spring (11) and a second heat dissipation hole (122) opened on the lower plate of the spring (12). The central shaft hole includes a first shaft hole (111) opened in the upper spring plate (11) and a second shaft hole (121) opened in the lower spring plate (12), wherein the first shaft hole (111) and the second shaft hole (121) are coaxial; The first heat dissipation hole (112) and the second heat dissipation hole (122) are misaligned.

2. The high-temperature-resistant disc spring with heat dissipation holes according to claim 1, characterized in that: Also includes: A positioning protrusion (113) is fixed to the bottom surface of the upper spring plate (11), and a positioning groove (123) is provided on the top surface of the lower spring plate (12) to match the positioning protrusion (113).

3. The high-temperature-resistant disc spring with heat dissipation holes according to claim 1, characterized in that: The cross-sectional shape of the heat dissipation hole is circular, elliptical, or polygonal.

4. A high-temperature resistant disc spring with heat dissipation holes according to claim 1, characterized in that: The disc spring body (1) is a stainless steel or nickel-based alloy component.

5. The high-temperature-resistant disc spring with heat dissipation holes according to claim 1, characterized in that: The top surface of the upper spring plate (11) is an outwardly convex conical surface and the bottom surface is a flat surface, while the top surface of the lower spring plate (12) is a flat surface and the bottom surface is an inwardly concave conical surface.

6. The high-temperature-resistant disc spring with heat dissipation holes according to claim 1, characterized in that: The upper and lower surfaces of the upper spring plate (11) and the lower spring plate (12) are both provided with heat-insulating coatings.

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