A self-resetting vehicle-mounted vibration reduction device

Abstract

The present application discloses a self-resetting vehicle-mounted vibration damping device, which relates to the technical field of vibration damping of vehicle-mounted equipment, and includes: a mounting seat and a tray; a horizontal vibration damping assembly, including a first shape memory alloy member and a slide plate slidably arranged on the mounting seat in a horizontal direction, the slide plate and the mounting seat being connected via the first shape memory alloy member; a vertical vibration damping assembly, including an elastic buffer member and a second shape memory alloy member; the elastic buffer member is fixed on the tray / slide plate, and the elastic buffer member has multiple active ends; when the elastic buffer member is fixed on the tray / slide plate, the active end is slidably connected to the slide plate / tray; the second shape memory alloy member has multiple connection ends, the connection ends being arranged one-to-one corresponding to the active ends. The present application has the effect of improving the stability of the vibration damping effect of the shock absorber in road transportation projects of precision instruments.

Description

Technical Field

[0001] The present application relates to the technical field of vibration reduction of vehicle-mounted equipment, and in particular to a self-resetting vehicle-mounted vibration reduction device. Background Art

[0002] During the transportation of precision instruments or vibration-sensitive instruments, the frequency range of vibration caused by vehicle driving is wide and complex, which greatly affects the accuracy of the transported instruments.

[0003] In related art, Chinese patent document CN103603915A discloses a vibration damping device for transporting vibration-sensitive equipment. The device comprises a shock absorber, a positioning and guiding mechanism, a shock absorber mounting plate, and a shock absorber fixing plate. The shock absorber is fixed at its lower end to the shock absorber fixing plate, and its upper end is fixedly connected to the shock absorber mounting plate. The positioning and guiding mechanism can comprise a cylinder damping shock absorber or a spring damping shock absorber. The positioning mechanism is mounted on the shock absorber fixing plate, and the guiding mechanism is mounted on the shock absorber mounting plate. The positioning and guiding mechanisms are used in conjunction with each other. By installing the vibration damping device on the vibration-sensitive equipment, the vibration experienced by the equipment during long-distance transportation can be reduced, effectively protecting the vibration-sensitive equipment.

[0004] Related art cylinder damping shock absorbers or spring damping shock absorbers use a liquid medium to absorb and dissipate vibration energy. However, on the one hand, the vibration types during vehicle operation are complex, including both high-frequency and low-frequency vibrations, and cylinder damping shock absorbers or spring damping shock absorbers are not very effective in filtering high-frequency vibrations. On the other hand, cylinder damping shock absorbers or spring damping shock absorbers are prone to liquid leakage due to fatigue or excessive impact and vibration during long-term transportation, resulting in poor stability.

[0005] Therefore, in this field, how to design a device that can not only solve the problem of high-frequency and low-frequency vibration filtering, but also has high working stability to meet the transportation needs of precision instruments is a technical problem that needs to be solved urgently. Summary of the Invention

[0006] In order to improve the stability of the vibration reduction effect of the shock absorber in the highway transportation project of precision instruments, the present application provides a self-resetting vehicle-mounted vibration reduction device.

[0007] The present application provides a self-resetting vehicle-mounted vibration reduction device, which adopts the following technical solutions:

[0008] A self-resetting vehicle-mounted vibration reduction device, comprising:

[0009] Mounting base and tray;

[0010] A horizontal vibration damping assembly, comprising a first shape memory alloy component and a slide plate slidably arranged on the mounting seat in a horizontal direction, wherein the slide plate and the mounting seat are connected via the first shape memory alloy component;

[0011] A vertical vibration damping assembly includes an elastic buffer and a second shape memory alloy component; the elastic buffer is fixed on the tray / slide plate, and the elastic buffer has multiple active ends; when the elastic buffer is fixed on the tray / slide plate, the active end is slidably connected to the slide plate / tray; the second shape memory alloy component has multiple connecting ends, and the connecting ends are arranged one-to-one correspondingly to the active ends.

[0012] By adopting the above technical solution, the horizontal vibration damping assembly and the vertical vibration damping assembly decompose complex vibrations into vibrations in the horizontal and vertical directions, thereby facilitating the design of load-deformation curves in the horizontal and vertical directions; additional friction is provided between the contact surfaces of adjacent elastic buffers, and the second shape memory alloy component serves as a damping element, so that the load-deformation curve can be designed as a flag-type hysteresis curve to optimize the absorption and dissipation of vibration energy; the horizontal vibration damping assembly and the vertical vibration damping assembly do not require the use of liquid media, so there is no risk of leakage, thereby improving the stability of the vibration damping effect, and the second shape memory alloy component can return to its original shape after deformation, thereby facilitating the elastic buffer to return to its original shape, further improving the service life and stability of the elastic buffer; multiple elastic buffers can share the load, reducing the risk of fatigue or damage to a single elastic buffer due to overload.

[0013] Optionally, the elastic buffer is arc-shaped, the vertical vibration reduction assembly includes a plurality of sliders, the sliders are slidingly connected to the tray / slide plate, the sliders are rotatably connected to a rotating part, the active ends are fixed to the rotating part one by one, and the connecting ends are connected to the sliders one by one.

[0014] By adopting the above technical solution, one end of the elastic buffer can be rolled up or unrolled on the rotating part when it is deformed, thereby improving the reliability of the connection between the elastic buffer and the rotating part and reducing the risk of fatigue fracture caused by repeated forces in different directions at the connection.

[0015] Optionally, the outer wall of the rotating portion is inscribed in the inner wall of the corresponding elastic buffer component.

[0016] By adopting the above technical solution, when one end of the elastic buffer is rolled up on the rotating part, the inner wall of the elastic buffer and the outer wall of the rotating part can fit tightly, reducing the gap between the elastic buffer and the rotating part, thereby reducing the shaking of the elastic buffer during deformation.

[0017] Optionally, the number of the vertical vibration damping assemblies is four, and the vertical vibration damping assemblies are arranged opposite to each other in pairs. The two opposite vertical vibration damping assemblies are arranged as a vertical vibration damping assembly group, and the elastic buffer of one vertical vibration damping assembly group is fixedly connected to the slide, and the elastic buffer of the other vertical vibration damping assembly group is fixedly connected to the tray.

[0018] By adopting the above technical solution, the number of vertical vibration reduction components is four, and they are arranged opposite each other in pairs. The positions of the vertical vibration reduction components are reasonably allocated, which can optimize space utilization and ensure that the vibration reduction device provides the maximum vibration reduction effect in a limited space.

[0019] Optionally, one of the vertical vibration damping assemblies includes a plurality of elastic buffers, and the lengths of the elastic buffers gradually decrease in a direction away from the arc center of the elastic buffers.

[0020] By adopting the above technical solution, the length of the elastic buffer is designed to gradually decrease in the direction away from the center of the arc. This design helps to optimize the elastic distribution of the elastic buffer. In the area close to the center of the arc, the elastic buffer is longer and can provide greater elastic deformation capacity, while in the area away from the center of the arc, the elastic buffer is shorter and has less elastic deformation capacity. Under low-frequency, large-amplitude vibrations, the longer elastic buffer can provide sufficient deformation space to absorb vibrations; while under high-frequency, small-amplitude vibrations, the shorter elastic buffer can respond quickly and reduce the impact of vibrations. The gradual reduction in the length of the elastic buffer helps to enhance the structural stability of the entire vibration reduction device. Longer elastic buffers produce greater deformation during vibration, while shorter elastic buffers provide more stable support. This design helps to maintain the stability of the device during the vibration reduction process.

[0021] Optionally, the plurality of elastic buffer members form a leaf spring.

[0022] By adopting the above technical solution, the leaf spring structure is relatively simple, which makes the entire vibration damping device easier to design, manufacture and maintain. The simple structure also helps to reduce potential failure points and improve the durability and reliability of the device.

[0023] Optionally, the elastic buffer is provided with a connecting hole, and the vertical vibration damping assembly includes a first locking portion, the first locking portion includes a clamping portion and a connecting rod, the connecting rod passes through the multiple elastic buffers in sequence through the connecting hole, and one end is detachably connected to the skateboard / tray, and the other end is connected to the clamping portion, and the clamping portion and the skateboard or the tray jointly clamp the multiple elastic buffers.

[0024] By employing this technical solution, the clamping portion and the slide or tray work together to compress the multiple elastic buffers. This compression prevents displacement during vibration, ensuring the stability and reliability of the vertical vibration damping assembly. The design of the connecting rod and the clamping portion simplifies the installation and maintenance of the vibration damping device. This design makes adjusting the tension of the elastic buffers or replacing components easier and faster.

[0025] Optionally, a second locking portion is provided at one end of the first shape memory alloy part and a third locking portion is provided at the other end. The slide plate is provided with a limiting groove, the second locking portion is embedded in the limiting groove, and the third locking portion is provided on the mounting seat.

[0026] By adopting the above technical solution, the limiting groove on the slide plate and the second locking portion are embedded and matched to provide a precise position to fix one end of the shape memory alloy member. This cooperation helps to maintain the stability of the first shape memory alloy member during vibration.

[0027] Optionally, the third locking portion is threadedly connected to the mounting seat, and the first shape memory alloy component is rotationally connected to the third locking portion.

[0028] By adopting the above technical solution, rotating the third locking portion can change the distance between the third locking portion and the second locking portion, thereby adjusting the initial stress on the first shape memory alloy.

[0029] In summary, this application has at least one of the following beneficial effects:

[0030] 1. The horizontal and vertical vibration damping assemblies do not require the use of liquid media, eliminating the risk of leakage and improving the stability of the vibration damping effect. The second shape memory alloy component can return to its original shape after deformation, thereby facilitating the elastic buffer's return to its original shape, further increasing its service life and stability. Multiple elastic buffers can share the load, reducing the risk of fatigue or damage to a single elastic buffer due to overload.

[0031] 2. When the elastic buffer is deformed, one end can be rolled up or unrolled on the rotating part, thereby improving the reliability of the connection between the elastic buffer and the rotating part and reducing the risk of fatigue fracture caused by repeated forces in different directions at the connection;

[0032] 3. Under low-frequency, large-amplitude vibrations, longer elastic buffers can provide sufficient deformation space to absorb vibrations; while under high-frequency, small-amplitude vibrations, shorter elastic buffers can respond quickly and reduce the impact of vibrations;

[0033] 4. The structure of the leaf spring is relatively simple, which makes the entire vibration damping device easier to design, manufacture and maintain. The simple structure also helps to reduce potential failure points and improve the durability and reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0035] Figure 2 This is a schematic diagram of a partial structure of a horizontal vibration reduction assembly according to an embodiment of the present application;

[0036] Figure 3 This is a partial structural diagram of an embodiment of the present application for illustrating the matching relationship between the slider and the slide plate;

[0037] Figure 4 This is a schematic diagram of the overall structure of the embodiment of the present application for illustrating the matching relationship between the slider and the tray;

[0038] Figure 5 This is a schematic diagram of the partial structure of the vertical vibration reduction assembly according to an embodiment of the present application;

[0039] Figure 6 It is a schematic diagram of the overall structure of the embodiment of the present application for demonstrating the matching relationship between the slider and the tray.

[0040] Explanation of the accompanying drawings: 1. Mounting seat; 2. Tray; 3. Horizontal vibration damping assembly; 31. Slide plate; 311. Upper plate; 312. Lower plate; 32. Limiting groove; 33. First shape memory alloy part; 34. Second locking portion; 35. Third locking portion; 36. Giving groove; 4. Vertical vibration damping assembly; 41. Elastic buffer; 42. Connecting hole; 43. Second shape memory alloy part; 44. Slider; 45. Rotating portion; 46. First locking portion; 461. Connecting rod; 462. Pressing portion. DETAILED DESCRIPTION

[0041] Shape memory alloys are a class of smart materials with unique physical properties. They are able to remember their initial shape and return to it after being subjected to external stimuli such as temperature changes or mechanical forces.

[0042] In particular, their superelasticity and restoring properties are being exploited. Shape memory alloys, which can return to their original shape after deformation, have revolutionized vibration reduction technology. The application of tubular shape memory alloys offers a vibration reduction solution that does not require external fluids, but most existing designs are limited to laboratory research or single-direction vibration reduction. Existing technologies fail to fully exploit the potential of shape memory alloys in three dimensions, particularly the ability to effectively integrate and manipulate these materials within the complex dynamic environment of a vehicle.

[0043] The present invention effectively solves the above problems through an innovative three-dimensional vibration damping device design. The device uses a combination of leaf springs and shape memory alloy wires to optimize the energy absorption and dissipation process through a flag-type hysteresis curve. This design not only improves the vibration damping efficiency, but also significantly reduces leakage or environmental sensitivity issues because it does not contain any oil or other liquid media, making the system more environmentally friendly and sustainable. In addition, the vibration damping device has a simple structure and low maintenance requirements, which is mainly reflected in the fact that there is no need to regularly replace liquids or check seals, which greatly reduces operating and maintenance costs. Through these innovations, the present invention improves the stability and performance of on-board equipment while ensuring the economic benefits and long-term reliability of the system.

[0044] The following is combined with Figure 1-6 This application is described in further detail.

[0045] The embodiment of the present application discloses a self-resetting vehicle-mounted vibration reduction device, referring to Figure 1 The self-resetting vehicle-mounted vibration damping device includes a mounting base 1 and a tray 2. The main body of the mounting base 1 is a rectangular shell, and the main body of the tray 2 is in the shape of a rectangular plate. Four vertical vibration damping components 4 are arranged between the mounting base 1 and the tray 2. The direction parallel to the tray 2 is defined as the horizontal direction, and the direction perpendicular to the tray 2 is defined as the vertical direction.

[0046] Reference Figure 2 and Figure 3 The mounting base 1 is provided with a horizontal vibration damping assembly 3, which includes a slide plate 31 and four first shape memory alloy members 33. The slide plate 31 includes an upper plate 311 and a lower plate 312 of identical cross-sectional shape. The lower plate 312 is horizontally slidably connected to the mounting base 1, and the upper plate 311 is fixedly connected to the lower plate 312. Four limiting slots 32 are defined on the opposing sidewalls of the upper and lower plates 311 and 312, and the four limiting slots 32 are arranged around the center of the slide plate 31. The first shape memory alloy member 33 is elongated, with a second locking portion 34 fixedly connected to one end of the first shape memory alloy member 33 and a third locking portion 35 rotatably connected to the mounting base 1 at the other end. The third locking portion 35 is threadedly connected to the mounting base 1. The second locking portion 34 is embedded between the upper and lower plates 311 and 312 and correspondingly embedded in the limiting slots 32. The first shape memory alloy member 33 is arranged horizontally, and the four first shape memory alloy members 33 intersect at the center of the slide plate 31.

[0047] Mounting base 1 is installed on a vehicle, and the equipment being transported is placed on pallet 2. When vibration occurs, it is decomposed into horizontal and vertical vibrations. The energy of the horizontal vibration is absorbed by the deformation of the four first shape memory alloy members 33 and dissipated through the recovery of the first shape memory alloy members 33. The vertical vibration is absorbed and dissipated by the vertical vibration damping assembly 4. Decomposing complex vibration into horizontal and vertical vibrations facilitates the design of horizontal and vertical load-deformation curves.

[0048] The third locking portion 35 is threadedly connected to the mounting base 1. When the third locking portion 35 is rotated, the distance between the second locking portion 34 and the third locking portion 35 is changed, allowing the user to change the initial stress applied to the first shape memory alloy 33 by rotating the third locking portion 35. The first shape memory alloy is rotatably connected to the third locking portion 35, which can reduce the possibility of the first shape memory alloy being twisted when the third locking portion 35 is rotated.

[0049] Reference Figure 3 and Figure 4 The four vertical vibration damping assemblies 4 are arranged opposite each other in pairs. The two opposing vertical vibration damping assemblies 4 form a vertical vibration damping assembly 4 group. The vertical vibration damping assemblies 4 of one vertical vibration damping assembly 4 group are arranged perpendicularly in the horizontal direction and are reversed in the vertical direction. Since the four vertical vibration damping assemblies 4 have the same structure, only the positional relationship changes. The following description uses a vertical vibration damping assembly 4 near the short side of the mounting base 1 as an example.

[0050] Reference Figure 4 and Figure 5 The vertical vibration damping assembly 4 includes a first locking portion 46 and a plurality of arc-shaped elastic buffers 41. The plurality of elastic buffers 41 are stacked in sequence in the vertical direction and arranged concentrically. The openings of the plurality of elastic buffers 41 are all facing the tray 2. The length of the elastic buffers 41 gradually decreases as they approach the slide 31. The elastic buffers 41 are steel plates, and a connecting hole 42 is provided in the center of the elastic buffers 41. The first locking portion 46 includes a connecting rod 461 and a pressing portion 462. The pressing portion 462 is a hexagonal plate with an arc-shaped end face. One end of the connecting rod 461 is fixedly connected to the pressing portion 462, and the other end passes through the plurality of elastic buffers 41 in sequence through the connecting hole 42 and is threadedly connected to the slide 31. The pressing portion 462 and the upper plate 311 of the slide 31 jointly clamp the plurality of elastic buffers 41, so that the plurality of elastic buffers 41 form a leaf spring. In other embodiments of the present application, the material of the elastic buffer 41 can be rubber.

[0051] Reference Figure 5 and Figure 6The elastic buffer 41 has two active ends. Sliders 44 are provided at both ends of the elastic buffer 41 away from the slide 31. The slides 44 are slidably connected to the bottom wall of the tray 2 along the line connecting the two slides 44. The slides 44 are rotatably connected to a rotating portion 45. The rotating portion 45 is cylindrical, and the rotation axis of the rotating portion 45 is arranged in the horizontal direction and perpendicular to the movement direction of the slides 44. The active end of the elastic buffer 41 near the slide 31 is fixedly connected to the corresponding rotating portion 45, so that the outer wall of the rotating portion 45 is inscribed in the inner wall of the elastic buffer 41. Four second shape memory alloy members 43 are connected between the two slides 44. The second shape memory alloy members 43 have two connecting ends, which are fixedly connected to the slides 44. The four second shape memory alloy members 43 are arranged in parallel and are in the shape of long strips.

[0052] Reference Figure 4 In the other vertical vibration damping assembly 4, the openings of the multiple elastic buffers 41 all face the slide 31. The length of the elastic buffers 41 gradually increases as they approach the slide 31. Sliders 44 are provided at both ends of the elastic buffers 41 near the slide 31. The slides 44 are slidably connected to the slide 31. The movement directions of the slides 44 of the two vertical vibration damping assemblies 4 are perpendicular to each other. The connecting rod 461 of the first locking portion 46 is threadedly connected to the tray 2, so that the pressing portion 462 and the tray 2 jointly compress the multiple elastic buffers 41.

[0053] During vibration, the vertical vibration causes the leaf spring to deform in the vertical direction. When the leaf spring is compressed, the corresponding two sliders 44 move toward each other, causing the second shape memory alloy component 43 to compress and deform. When the leaf spring recovers its deformation, the corresponding two sliders 44 move away from each other, causing the second shape memory alloy component 43 to recover its deformation, thereby absorbing and dissipating the vibration energy in the vertical direction.

[0054] The leaf spring can not only provide the rigidity required for supporting the equipment, but also deform to absorb and dissipate vibrations; additional friction is provided between the contact surfaces of adjacent elastic buffers 41 in the leaf spring, and the second shape memory alloy part 43 is used as a damping element, so that the load-deformation curve can be designed as a flag-type hysteresis curve to optimize the absorption and dissipation of vibration energy; the horizontal vibration reduction assembly 3 and the vertical vibration reduction assembly 4 do not require the use of liquid media, so there is no risk of leakage, which improves the stability of the vibration reduction effect; multiple elastic buffers 41 can share the load, reduce the risk of fatigue or damage of a single elastic buffer 41 due to overload, and further improve the stability and service life of the vibration reduction device.

[0055] The length of the elastic buffer 41 is designed to gradually decrease in the direction away from the center of the arc. This design helps to optimize the elastic distribution of the elastic buffer 41. In the area close to the center of the arc, the elastic buffer 41 is longer and can provide greater elastic deformation capacity, while in the area away from the center of the arc, the elastic buffer 41 is shorter and has less elastic deformation capacity. Under low-frequency, large-amplitude vibrations, the longer elastic buffer 41 can provide sufficient deformation space to absorb vibrations; while under high-frequency, small-amplitude vibrations, the shorter elastic buffer 41 can respond quickly and reduce the impact of vibrations. The gradual reduction in the length of the elastic buffer 41 helps to enhance the structural stability of the entire vibration reduction device. The longer elastic buffer 41 produces greater deformation during vibration, while the shorter elastic buffer 41 provides more stable support. This design helps to maintain the stability of the device during the vibration reduction process.

[0056] When deforming, one end of the elastic buffer 41 can be wound or unwound on the rotating portion 45, thereby improving the reliability of the connection between the elastic buffer 41 and the rotating portion 45 and reducing the risk of fatigue fracture caused by repeated forces from different directions. When one end of the elastic buffer 41 is wound on the rotating portion 45, the inner wall of the elastic buffer 41 and the outer wall of the rotating portion 45 can fit tightly together, reducing the gap between the elastic buffer 41 and the rotating portion 45, thereby reducing the shaking of the elastic buffer 41 during deformation.

[0057] The design of the connecting rod 461 and the pressing portion 462 simplifies the installation and maintenance of the vibration damping device. If the tension of the elastic buffer 41 needs to be adjusted or the number of elastic buffers 41 needs to be changed, the connecting rod 461 is rotated to release the connection between the connecting rod 461 and the slide 31 or the tray 2, and the elastic buffer 41 can be replaced or the number of elastic buffers 41 can be changed.

[0058] The four groups of two vertical vibration damping components are arranged upside down to optimize space utilization and ensure that the vibration damping device provides the maximum vibration damping effect within a limited space.

[0059] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A self-resetting vehicle-mounted vibration reduction device, characterized in that: include: Mounting base (1) and tray (2); A horizontal vibration damping assembly (3) comprising a first shape memory alloy component (33) and a slide plate (31) slidably arranged on the mounting seat (1) in a horizontal direction, wherein the slide plate (31) and the mounting seat (1) are connected via the first shape memory alloy component (33); A vertical vibration damping assembly (4) comprises an elastic buffer (41) and a second shape memory alloy member (43); the elastic buffer (41) is fixed on the tray (2) / slide plate (31), and the elastic buffer (41) has two active ends; when the elastic buffer (41) is fixed on the tray (2) / slide plate (31), the active end is slidably connected to the slide plate (31) / tray (2); the second shape memory alloy member (43) has two connection ends, and the connection ends are arranged in a one-to-one correspondence with the active ends; The elastic buffer (41) is arc-shaped, and the vertical vibration reduction assembly (4) includes a plurality of sliders (44), the sliders (44) are slidably connected to the tray (2) / slide plate (31), the sliders (44) are rotatably connected to a rotating portion (45), the active ends are fixedly provided on the rotating portion (45) in a one-to-one correspondence, and the connecting ends are connected to the sliders (44) in a one-to-one correspondence; The outer wall of the rotating portion (45) is inscribed in the inner wall of the corresponding elastic buffer (41).

2. The self-resetting vehicle-mounted vibration damping device according to claim 1, characterized in that: The number of the vertical vibration damping assemblies (4) is four, and the vertical vibration damping assemblies (4) are arranged opposite to each other in pairs. The two opposite vertical vibration damping assemblies (4) are arranged as a vertical vibration damping assembly (4) group. The elastic buffer (41) of one vertical vibration damping assembly (4) group is fixedly connected to the slide plate (31), and the elastic buffer (41) of the other vertical vibration damping assembly (4) group is fixedly connected to the tray (2).

3. The self-resetting vehicle-mounted vibration damping device according to claim 1, characterized in that: One of the vertical vibration damping components (4) comprises a plurality of elastic buffers (41), wherein the length of the elastic buffers (41) gradually decreases in a direction away from the arc center of the elastic buffers (41).

4. The self-resetting vehicle-mounted vibration damping device according to claim 3, characterized in that: The plurality of elastic buffer members (41) form a leaf spring.

5. The self-resetting vehicle-mounted vibration damping device according to claim 1, characterized in that: The elastic buffer (41) is provided with a connecting hole (42), and the vertical vibration damping assembly (4) includes a first locking portion (46), and the first locking portion (46) includes a pressing portion (462) and a connecting rod (461). The connecting rod (461) passes through the plurality of elastic buffers (41) in sequence through the connecting hole (42), and one end of the connecting rod is detachably connected to the slide (31) / tray (2), and the other end is connected to the pressing portion (462). The pressing portion (462) and the slide (31) or the tray (2) jointly press the plurality of elastic buffers (41).

6. The self-resetting vehicle-mounted vibration damping device according to claim 1, characterized in that: A second locking portion (34) is provided at one end of the first shape memory alloy part (33), and a third locking portion (35) is provided at the other end; a limiting groove (32) is provided on the slide plate (31); the second locking portion (34) is embedded in the limiting groove (32); and the third locking portion (35) is provided on the mounting seat (1).

7. The self-resetting vehicle-mounted vibration damping device according to claim 6, characterized in that: The third locking portion (35) is threadedly connected to the mounting seat (1), and the first shape memory alloy component (33) is rotationally connected to the third locking portion (35).

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