A nested spiral shock-absorbing device based on compression-torsion coupling

Abstract

The present invention discloses a nested spiral shock absorbing device based on compression-torsion coupling, and the present invention relates to the technical field of shock absorbers. The nested spiral shock absorbing device based on compression-torsion coupling comprises an upper end plate, a plurality of groups of fan blades are arranged in an array on the outer end surface of the upper end plate, and a nested rod is arranged in an array with its center as the base point at the bottom of the upper end plate, a nested tube is provided at the bottom of each nested rod, and each nested rod is respectively nested in a nested groove of the nested tube, and the plurality of groups of nested rods and nested tubes present a spiral structure. The present invention realizes the compression-torsion coupling effect in design, and the downward movement of the upper end plate causes the nested rods and the nested tubes to produce relative slippage, and the characteristics of high-friction materials are utilized to dissipate vibration energy. Compared with the prior art, the spiral structure design of the nested rods and the nested tubes makes the compression-torsion coupling effect more significant, and enhances the shock absorption effect. The high-strength material ensures the stability of the device under high-frequency vibration and impact.

Description

Technical Field

[0001] The invention relates to the technical field of shock absorbers, and in particular to a nested spiral shock absorbing device based on compression-torsion coupling. Background Art

[0002] Shock absorbers are used to suppress the shock caused by the rebound of springs after absorbing shock and the impact from the road surface. They are widely used in automobiles to accelerate the attenuation of frame and body vibrations to improve the driving smoothness of the car. When passing through uneven roads, although the shock-absorbing spring can filter the vibration of the road surface, the spring itself will still have reciprocating motion, and the shock absorber is used to suppress this spring jump.

[0003] Using hydraulic devices for buffering is an effective solution, but although the combination of hydraulic buffering can achieve the buffering effect, the hydraulic buffering is difficult to maintain. Therefore, when subjected to continuous and strong impact, the durability of the traditional hydraulic buffering is tested, and the shock absorber is easily damaged and difficult to repair. Therefore, how to avoid secondary damage to the shock-absorbing object caused by the elastic component during the shock-absorbing process is still an important problem that the existing technology needs to solve.

[0004] For example, the shock absorbing method and shock absorbing device based on the tension-torsion coupling effect disclosed in China Invention Publication No. CN111549647A, the shock absorbing device achieves shock absorption through cooperation with elastic components, thereby avoiding excessive reliance on core components in a single shock absorption method and making the energy dissipation of the present invention more effective in practical applications.

[0005] Specifically, the device is first subjected to force by the first end plate, which causes the first end plate to move toward the turntable and compresses the elastic component. At this time, the turntable is rotated by being pushed by the first end plate through the transmission rod. Since the turntable is in the damping fluid and the first end plate does not generate movement in a direction other than the turntable, the transmission rod only drives the turntable to rotate in the damping fluid. Due to the friction relationship between the turntable and the damping fluid, the damping fluid restricts the rotation of the turntable, thereby causing part of the impact on the shock absorbing device to be absorbed by the damping fluid and thereby performing shock absorption. In the second stage, due to the presence of an elastic component for maintaining the position of the end plate and the turntable, when the shock absorbing device is not subjected to force and the elastic component of the shock absorbing device is compressed, the elastic component releases elastic potential energy to restore its initial state and pushes the first end plate and the turntable to move. Similar to the first stage, the turntable also generates a friction relationship with the damping fluid, and the damping fluid can mitigate the impact on the shock absorbing device.

[0006] However, in the above device, the linear design of the transmission rod can drive the turntable to rotate within the torsion range that the transmission rod can withstand, thereby achieving the rotation of the turntable and the blades. The friction relationship generated by the rotation will consume most of the impact. However, the hidden danger is that if the transmission rod exceeds the torsion range during actual vibration transmission, it will break directly. Therefore, under the impact of high-frequency vibration, the turntable rotates multiple cycles and the first end plate reciprocates in the longitudinal direction. The shock absorption stability is insufficient and is not enough to meet the shock absorption needs in complex environments. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a nested spiral shock absorbing device based on compression-torsion coupling, which solves the problems raised in the above-mentioned background technology.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a nested spiral shock absorbing device based on compression-torsion coupling, the shock absorbing device comprising an upper end plate, a plurality of groups of fan blades are arranged in an array on the outer end surface of the upper end plate, the upper end plate is connected to each fan blade, and a plurality of groups of nested rods are arranged in an array at the bottom of the upper end plate with its center as the base point, the upper end plate is fixedly connected to each nested rod, a nested tube is provided at the bottom of each nested rod, each nested rod is respectively nested in a nested groove of the nested tube, and the plurality of groups of nested rods and nested tubes present a spiral structure;

[0009] Furthermore, in the present application, the downward movement of the upper end plate causes relative sliding between the nested rods and the nested tubes, and the characteristics of the high-friction material are utilized to further dissipate the vibration energy. Compared with the prior art, the spiral structure design of the nested rods and the nested tubes makes the compression-torsion coupling effect more significant, thereby enhancing the shock absorption effect.

[0010] It is obvious that in the technical solution disclosed in this application example, the spiral structure of the nested rods and the nested tubes replaces the traditional elastic components and the transmission rod body design. During high-frequency vibration and impact, the downward movement of the upper end plate in the first stage and the upward movement of the upper end plate in the second stage can ensure the stability of the device.

[0011] A further improvement of the technical solution of the present invention is that: the shock absorbing device further comprises an installation unit, the installation unit comprises a vibration source located at the upper end, a base is arranged below the vibration source, and a transmission rod for transmitting vibration is abutted against the bottom of the vibration source, the vibration source and the base form a closed installation compartment, and the closed installation compartment is filled with damping fluid;

[0012] It should be noted that, as shown in the accompanying drawings, the installation unit shown in this embodiment exists as a closed space, and is often applied to automobile suspension systems and building earthquake-resistant structures in specific implementations. If the environment permits, the present application is further improved:

[0013] By providing a compensation chamber and related valves, the damping liquid can effectively reduce the internal pressure of the liquid through the compensation chamber during shock absorption, and further enable the functions of the nested rods and nested tubes of the shock absorption device and the shock absorption related components to be effectively exerted. The reason is that after the indoor space of the damping liquid filling chamber is closed and compressed, the damping liquid is often difficult to be easily compressed due to its components, which easily leads to the difficulty in exerting the functions of the nested rods and nested tubes of the shock absorption device and the shock absorption related components;

[0014] From the above disclosure, it can be known that in the first stage, the vibration generated by the vibration source is transmitted to the upper end plate through the transmission rod, and the upper end plate moves downward under the vibration excitation, driving the fan blades to rotate in the damping fluid. The rotation of the fan blades generates fluid resistance in the damping fluid, further dissipating the vibration energy; the downward movement of the upper end plate causes the nesting rod and the nesting tube to have relative slip; in the second stage, when the upper end plate contacts the upper end of the nesting tube, with the help of the buoyancy of the fan blades in the damping fluid, the upper end plate returns to its initial position, completing a shock absorption cycle. The buoyancy not only helps the upper end plate to restore its position, but also further dissipates the vibration energy. This process can be carried out continuously to ensure that the vibration energy is effectively dissipated. The damping fluid will generate vortices in the process of preventing the fan blades from rotating, and the trend of the damping fluid to generate vortices in the second stage is opposite to the direction of the vortices generated in the first stage. Therefore, when the damping fluid prevents the fan blades from rotating in the second stage, it can absorb more impact energy.

[0015] A further improvement of the technical solution of the present invention is that: the upper end plate is fixedly connected to the transmission rod, the top of the transmission rod abuts against the bottom of the vibration source, and the upper end plate is made of high-strength alloy material; to ensure that it is not easily deformed during long-term use, the design of the upper end plate takes into account the close fit with the fan blades to ensure the effective transmission of vibration energy, and the surface of the upper end plate is treated with anti-corrosion to adapt to various environmental conditions.

[0016] A further improvement of the technical solution of the present invention is that each of the fan blades adopts a hollow and lightweight design, and each of the fan blades adopts a high-strength composite material, which ensures strength while reducing weight and enhances the buoyancy effect in the damping fluid.

[0017] A further improvement of the technical solution of the present invention is that the fan blades also include the following configurations:

[0018] The twist angle and shape of the fan blades can be changed arbitrarily;

[0019] The surface of the fan blade is frosted.

[0020] The fan blade design improves the resistance effect in the damping fluid by optimizing the blade angle and shape and frosting its surface.

[0021] A further improvement of the technical solution of the present invention is that: the diameter of the nesting rod is smaller than the inner diameter of the nesting tube to ensure smooth nesting, and the nesting rod is made of high-friction and wear-resistant material; the surface of the nesting rod is specially treated to increase the friction coefficient, thereby improving the energy dissipation capacity, and the spiral design of the nesting rod enables the compression-torsion coupling effect to be achieved during the vibration process.

[0022] A further improvement of the technical solution of the present invention is that a lower end plate is provided at the bottom of the nested tube, and the lower end plate is fixedly mounted on the base. The nested groove of the nested tube has the same torsion angle and stretching length as the nested rod inside it. In the present application, the design of the nested tube takes into account the precise fit with the nested rod to ensure that there is no jamming during vibration.

[0023] A further improvement of the technical solution of the present invention is that the damping fluid may be selected from oil-based liquid, silicone liquid and any other liquid with high viscosity; wherein the damping fluid may be selected according to different application requirements to optimize the shock absorbing effect.

[0024] A further improvement of the technical solution of the present invention is that: when the vibration energy consumed by the fan blades rotating in the damping fluid is insufficient to cope with high-frequency vibrations and large impacts, sliding guide rods are arranged between adjacent fan blades, and the front and rear ends of the sliding guide rods are fixedly connected to the adjacent fan blades, and each sliding guide rod is provided with a collision block, which is slidably connected to the sliding guide rod, and a reset spring is sleeved between the collision block and the sliding guide rod.

[0025] Beneficial Effects

[0026] Compared with the prior art, the beneficial effects of the present invention are: a compression-torsion coupling effect is realized in the design, the downward movement of the upper end plate causes the nested rods and the nested tubes to produce relative sliding, and the characteristics of the high-friction material are utilized to further dissipate the vibration energy. Compared with the prior art, the spiral structure design of the nested rods and the nested tubes makes the compression-torsion coupling effect more significant and enhances the shock absorption effect. The high-strength material ensures the stability of the device under high-frequency vibration and impact, and the high-friction material increases the energy dissipation capacity, thereby further enhancing the shock absorption effect.

[0027] By designing different helix angles and stretching lengths of nested tubes and nested rods, customized compression-torsion coupling effects are achieved to improve the shock absorption effect. Users can choose different helix angles and stretching lengths according to specific application requirements to achieve the best shock absorption effect. The compression-torsion coupling effect enables the device to still work effectively in a multi-axis vibration environment;

[0028] The dual dissipation mechanism of high friction material and damping fluid is used to greatly improve the energy dissipation efficiency. The selection of damping fluid and the application of high friction material enable the device to maintain high energy dissipation at various vibration frequencies. The dual dissipation mechanism ensures the stability of the device during long-term operation. The inelastic design avoids the secondary damage problem of traditional elastic shock absorbers, and the high-strength material ensures the durability and reusability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of the interior of the installation unit in the nested spiral shock-absorbing device based on compression-torsion coupling;

[0030] Figure 2 A top view of the installation unit in the nested spiral damping device based on compression-torsion coupling;

[0031] Figure 3 It is a schematic diagram of the structure of the damping structure in the nested spiral damping device based on compression-torsion coupling;

[0032] Figure 4 It is a schematic diagram of the structure of the damping structure part in the nested spiral damping device based on compression-torsion coupling;

[0033] Figure 5 It is a schematic diagram of the overall structure of the nested spiral shock-absorbing device based on compression-torsion coupling.

[0034] In the figure: A-1, vibration source; A-2, transmission rod; A-3, damping fluid; A-4, base;

[0035] B-1, upper end plate; B-2, fan blades; B-3, nesting rods; B-4, nesting tubes; B-5, lower end plate;

[0036] C-1, sliding guide rod; C-2, collision block; C-3, return spring. DETAILED DESCRIPTION

[0037] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0038] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0039] In addition, in order to better illustrate the present application, numerous specific details are provided in the specific embodiments below. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, and elements well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0040] As attached Figure 1-5 As shown, this embodiment provides a nested spiral shock-absorbing device based on compression-torsion coupling, the shock-absorbing device includes an upper end plate B-1, a plurality of groups of fan blades B-2 are arranged in an array on the outer end surface of the upper end plate B-1, the upper end plate B-1 is connected to each fan blade B-2, and a plurality of groups of nested rods B-3 are arranged in an array with the center of the upper end plate B-1 as the base point, the upper end plate B-1 is fixedly connected to each nested rod B-3, a nested tube B-4 is provided at the bottom of each nested rod B-3, each nested rod B-3 is respectively nested in the nesting groove of the nested tube B-4, and the plurality of groups of nested rods B-3 and the nested tubes B-4 all present a spiral structure.

[0041] Furthermore, in the present application, the downward movement of the upper end plate B-1 causes relative slip between the nested rod B-3 and the nested tube B-4, and the characteristics of the high-friction material are utilized to further dissipate the vibration energy. Compared with the prior art, the spiral structure design of the nested rod B-3 and the nested tube B-4 makes the compression-torsion coupling effect more significant, thereby enhancing the shock absorption effect.

[0042] It is obvious that in the technical solution disclosed in this application example, the spiral structure of the nested rod B-3 and the nested tube B-4 replaces the traditional elastic component and the transmission rod body design. In high-frequency vibration and impact, the downward movement of the upper end plate B-1 in the first stage and the upward movement of the upper end plate B-1 in the second stage can ensure the stability of the device.

[0043] The shock absorbing device also includes an installation unit, which includes a vibration source A-1 located at the upper end, a base A-4 is arranged below the vibration source A-1, and a transmission rod A-2 for transmitting vibration is abutted at the bottom of the vibration source A-1, and the vibration source A-1 and the base A-4 form a closed installation compartment, and the closed installation compartment is filled with damping liquid A-3.

[0044] It should be noted that, as shown in the accompanying drawings, the installation unit shown in this embodiment exists as a closed space, and is often used in automobile suspension systems and building earthquake-resistant structures in specific implementations. If the environment permits, the present application is further improved:

[0045] By setting up a compensation chamber and related valves, the damping liquid A-3 can effectively reduce the internal pressure of the liquid through the compensation chamber during shock absorption, and further enable the functions of the nested rods B-3 and nested tubes B-4 of the shock absorption device and the shock absorption related components to be effectively exerted. The reason is that after the indoor space of the damping liquid A-3 filling chamber is closed and compressed, the damping liquid A-3 is often difficult to be easily compressed due to its components, which easily leads to the nested rods B-3 and nested tubes B-4 of the shock absorption device and the shock absorption related components. The functions are difficult to exert.

[0046] It can be seen from the above disclosure that in the first stage, the vibration generated by the vibration source A-1 is transmitted to the upper end plate B-1 through the transmission rod A-2. The upper end plate B-1 moves downward under the vibration excitation, driving the fan blade B-2 to rotate in the damping fluid A-3. The rotation of the fan blade B-2 generates fluid resistance in the damping fluid A-3, further dissipating the vibration energy; the downward movement of the upper end plate B-1 causes the nesting rod B-3 and the nesting tube B-4 to slide relative to each other; in the second stage, when the upper end plate B-1 contacts the upper end of the nesting tube B-4, the fan blade B-2 is used to rotate in the damping fluid A-3. 3, the upper end plate B-1 returns to its initial position, completing a shock absorption cycle. The buoyancy not only helps the upper end plate B-1 to recover its position, but also further dissipates the vibration energy. This process can be carried out continuously to ensure that the vibration energy is effectively dissipated. The damping fluid A-3 will generate eddy currents in the process of preventing the fan blades B-2 from rotating. The trend of the eddy currents generated by the damping fluid A-3 in the second stage is opposite to the direction of the eddy currents generated in the first stage. Therefore, when the damping fluid A-3 prevents the fan blades B-2 from rotating in the second stage, it can absorb more impact energy.

[0047] In an optional embodiment, the upper end plate B-1 is fixedly connected to the transmission rod A-2, the top of the transmission rod A-2 abuts against the bottom of the vibration source A-1, and the upper end plate B-1 is made of high-strength alloy material to ensure that it is not easily deformed during long-term use. The design of the upper end plate B-1 takes into account the close fit with the fan blade B-2 to ensure the effective transmission of vibration energy. The surface of the upper end plate B-1 is treated with anti-corrosion to adapt to various environmental conditions.

[0048] Each of the fan blades B-2 adopts a hollow and lightweight design, and each of the fan blades B-2 is made of high-strength composite materials, which not only ensures strength but also reduces weight, and enhances the buoyancy effect in the damping liquid A-3.

[0049] The fan blade B-2 also includes the following configuration:

[0050] The twist angle and shape of the blades of the fan blade B-2 can be changed arbitrarily;

[0051] The surface of the fan blade B-2 is frosted.

[0052] The design of the fan blade B-2 improves the resistance effect in the damping fluid A-3 by optimizing the blade angle and shape and frosting its surface.

[0053] The diameter of the nesting rod B-3 is smaller than the inner diameter of the nesting tube B-4 to ensure smooth nesting, and the nesting rod B-3 is made of high friction and wear-resistant material.

[0054] The surface of the nested rod B-3 has been specially treated to increase the friction coefficient, thereby improving the energy dissipation capacity. The spiral design of the nested rod B-3 enables the compression-torsion coupling effect to be achieved during vibration.

[0055] A lower end plate B-5 is provided at the bottom of the nested tube B-4, and the lower end plate B-5 is fixedly mounted on the base A-4. The nested groove of the nested tube B-4 has the same torsion angle and stretching length as the nested rod B-3 therein.

[0056] In the present application, the design of the nesting tube B-4 takes into account the precise fit with the nesting rod B-3 to ensure that there is no jamming during the vibration process.

[0057] The damping liquid A-3 may be selected from oil-based liquid, silicone liquid, and any other liquid with high viscosity. The damping liquid A-3 may be selected according to different application requirements to optimize the shock absorption effect.

[0058] In another optional embodiment, in this embodiment, when the vibration energy consumed by the rotation of the fan blade B-2 in the damping liquid A-3 is insufficient to cope with high-frequency vibrations and large impacts, a sliding guide rod C-1 is arranged between adjacent fan blades B-2, and the front and rear ends of the sliding guide rod C-1 are fixedly connected to the adjacent fan blades B-2, and each of the sliding guide rods C-1 is provided with a collision block C-2, and the collision block C-2 is slidably connected to the sliding guide rod C-1, and a return spring C-3 is sleeved between the collision block C-2 and the sliding guide rod C-1.

[0059] In the first stage, the collision block C-2 and the return spring C-3 both rotate in the same direction as the fan blade B-2. The centrifugal force generated during the rotation compresses the return spring C-3. In the second stage, the eddy current generated by the damping fluid A-3 in the second stage is opposite to the eddy current generated in the first stage. At this time, the collision block C-2 is subjected to the reverse centrifugal force, the return spring C-3 is released, and the collision block C-2 hits the fan blade B-2. The fan blade B-2 increases its rotation speed briefly. Then, the total amount of friction mechanical energy generated by the damping fluid A-3 within the cycle range increases, the vibration energy consumed increases, and the shock absorption effect improves.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nested spiral damping device based on compression-torsion coupling, characterized in that: The shock absorbing device comprises an upper end plate (B-1), a plurality of groups of fan blades (B-2) are arranged in an array on the outer end surface of the upper end plate (B-1), the upper end plate (B-1) is connected to each fan blade (B-2), and a plurality of groups of nested rods (B-3) are arranged in an array with the center of the upper end plate (B-1) as a base point at the bottom, the upper end plate (B-1) is fixedly connected to each nested rod (B-3), a nested tube (B-4) is arranged at the bottom of each nested rod (B-3), each nested rod (B-3) is respectively nested in a nested groove of the nested tube (B-4), and the plurality of groups of nested rods (B-3) and the nested tubes (B-4) all present a spiral structure; The vibration reduction device further comprises an installation unit, the installation unit comprising a vibration source (A-1) located at an upper end, a base (A-4) being arranged below the vibration source (A-1), and a transmission rod (A-2) for transmitting vibration being abutted against the bottom of the vibration source (A-1), the vibration source (A-1) and the base (A-4) forming a closed installation compartment, and the closed installation compartment is filled with a damping fluid (A-3); The upper end plate (B-1) is fixedly connected to the transmission rod (A-2), the top of the transmission rod (A-2) abuts against the bottom of the vibration source (A-1), and the upper end plate (B-1) is made of high-strength alloy material; A lower end plate (B-5) is provided at the bottom of the nested tube (B-4), and the lower end plate (B-5) is fixedly mounted on the base (A-4), and the nested groove has the same torsion angle and stretching length as the nested rod (B-3) therein; A sliding guide rod (C-1) is provided between adjacent fan blades (B-2), and the front and rear ends of the sliding guide rod (C-1) are fixedly connected to the adjacent fan blades (B-2). A collision block (C-2) is provided on each sliding guide rod (C-1), and the collision block (C-2) is slidably connected to the sliding guide rod (C-1), and a return spring (C-3) is sleeved on the sliding guide rod (C-1) between the collision block (C-2) and the fan blade (B-2).

2. The nested spiral damping device based on compression-torsion coupling according to claim 1 is characterized in that: Each of the fan blades (B-2) adopts a hollow and lightweight design, and each of the fan blades (B-2) is made of a high-strength composite material.

3. The nested spiral damping device based on compression-torsion coupling according to claim 2, characterized in that: The fan blade (B-2) also includes the following configuration: The surface of the fan blade (B-2) is frosted.

4. The nested spiral damping device based on compression-torsion coupling according to claim 3 is characterized in that: The diameter of the nested rod (B-3) is smaller than the inner diameter of the nested tube (B-4), and the nested rod (B-3) is made of a highly wear-resistant material.

5. The nested spiral damping device based on compression-torsion coupling according to claim 1, characterized in that: The damping liquid (A-3) may be selected from oil-based liquid, silicone liquid, and any other liquid with high viscosity.

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