A variable damping vertical vibration reduction and buffer device

Abstract

The present invention discloses a variable damping vertical vibration damping buffer device, which relates to the field of mechanical vibration. It comprises an upper cavity shell and a lower cavity shell, wherein the inner cavity of the lower cavity shell is provided with a viscous liquid, and a nozzle is provided on the lower cavity body; a honeycomb vibration damping structure is provided in the upper cavity shell, and the middle part of the honeycomb vibration damping structure forms an upper cavity body, and an air spring is provided at the center position of the upper cavity body, and a plurality of transverse springs are fixedly connected to the circumference of the air spring, and the other end of each transverse spring is fixedly connected to the inner side wall of the honeycomb vibration damping structure body; a plurality of vertical temperature-controlled memory alloy springs are provided between the upper cavity shell and the lower cavity shell, and the upper and lower ends of each vertical temperature-controlled memory alloy spring are fixedly connected to the lower end outer wall of the upper cavity shell and the upper end outer wall of the lower cavity shell through a heat-conducting gasket. The present invention can change the overall response frequency, thereby attenuating the vibration energy of different frequencies, so as to reduce the adverse effects of mechanical equipment, high-speed railway vibration and other factors on the building structure.

Description

Technical Field

[0001] The invention relates to a field, and in particular to a variable damping vertical vibration reduction buffer device. Background Art

[0002] With the rapid development of my country's economy, the number of high-rise buildings, industrial plants and other buildings is increasing. At the same time, the application of mechanical equipment and high-speed railways in daily life is also becoming more and more widespread. However, the vibration and noise caused by these mechanical equipment and high-speed railways will have an impact on buildings that cannot be ignored and greatly reduce the comfort of people's living. Porous material is a material with a network structure composed of mutually interpenetrating or closed holes. Honeycomb porous material has the characteristics of a two-dimensional unit array in a plane and parallel stacking outside the plane, as well as a periodic topological distribution. It has a higher porosity and lower mass density than its matrix material, and has very high specific stiffness, specific strength and specific energy absorption. Air springs are springs that are filled with compressed air in a retractable closed container and use the elastic effect of air. They are composed of a rubber airbag and compressed air enclosed therein, and have the characteristics of large damping value at low frequency and small damping value at high frequency. There are many types of devices currently used for vibration isolation, such as shock absorbers. This type of device can only block vibrations in a narrow frequency range, resulting in very limited vibration reduction effects. Summary of the invention

[0003] In order to solve the above technical problems, the main purpose of the present invention is to provide a variable damping vertical vibration reduction buffer device. The present invention not only has the advantages of honeycomb structure and air spring, but also utilizes the non-continuous fluid impact force generated by the vertical vibration load and the external space pressure to stimulate the wide-band vibration reduction ability of the air spring, so that the overall response frequency of the device changes, thereby attenuating the vibration energy of different frequencies, so as to reduce the adverse effects of factors such as mechanical equipment and high-speed railway vibration on the building structure.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions to solve it.

[0005] A variable damping vertical vibration damping buffer device comprises an upper cavity shell and a lower cavity shell, characterized in that: a viscous liquid is arranged in the inner cavity of the lower cavity shell, a nozzle with a nozzle facing upward is arranged in the center position of the upper surface of the lower cavity shell, the upper end opening of the nozzle extends into the bottom of the upper cavity shell and the two are connected; an annular honeycomb vibration damping structure is horizontally arranged in the upper cavity shell, the middle part of the honeycomb vibration damping structure forms an upper cavity, an air spring is arranged in the center position of the upper cavity, the upper end surface of the air spring is fixedly connected to the inner wall of the upper end surface of the upper cavity shell, a plurality of transverse springs are fixedly connected to the circumference of the air spring, and the other end of each of the transverse springs is fixedly connected to the inner side wall of the honeycomb vibration damping structure; a plurality of vertical temperature-controlled memory alloy springs are arranged between the upper cavity shell and the lower cavity shell, and the upper and lower ends of each of the vertical temperature-controlled memory alloy springs are fixedly connected to the lower end outer wall of the upper cavity shell and the upper end outer wall of the lower cavity shell through a thermally conductive gasket.

[0006] Furthermore, the cross-sectional shape of the honeycomb vibration damping structure is annular, and the honeycomb vibration damping structure comprises a plurality of horizontally stacked unit cells distributed in an annular shape, the longitudinal section of each unit cell is a regular hexagon, and a plurality of holes are arranged on the walls of adjacent unit cells; the lower half of the honeycomb vibration damping structure is filled with a viscous liquid.

[0007] Furthermore, the horizontal cross-section of the upper cavity shell is circular or elliptical; the horizontal cross-section of the lower cavity shell is circular or elliptical.

[0008] Furthermore, the nozzle is formed by connecting a plurality of rubber rings whose sizes gradually decrease from bottom to top, and the lowest rubber ring is communicated with the lower cavity shell.

[0009] Furthermore, the air spring comprises a plurality of airbags stacked in sequence from top to bottom, adjacent airbags are fixedly connected, the top of the topmost airbag is fixedly connected to the top wall of the upper cavity shell, and the circumference of one of the middle airbags is connected to the inner wall of the honeycomb vibration damping structure through a plurality of the transverse springs.

[0010] Furthermore, the gas inside the air spring is compressed air.

[0011] Furthermore, the gas inside the air spring is a flame retardant inert gas.

[0012] Furthermore, the upper cavity shell, the lower cavity shell, and the honeycomb vibration damping structure are made of rubber; the transverse spring is made of carbon steel; and the thermal conductive gasket is made of copper.

[0013] The technical solution of the present invention not only combines the advantages of honeycomb structure and air spring, but also utilizes the non-continuous fluid impact force generated by vertical vibration load and external space pressure to stimulate the wide-band vibration reduction ability of air spring, so that the overall response frequency of the device changes, thereby attenuating vibration energy of different frequencies, thereby reducing the adverse effects of factors such as mechanical equipment and high-speed railway vibration on building structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0015] Figure 1 It is a partial cross-sectional structural schematic diagram of the present invention;

[0016] Figure 2 It is a schematic diagram of the vertical cross-section structure of a single cell in the honeycomb vibration reduction structure of the present invention.

[0017] In the above figure: 1. Upper cavity shell; 2. Lower cavity shell; 3. Viscous liquid; 4. Nozzle; 5. Honeycomb vibration reduction structure; 6. Air spring; 7. Transverse spring; 8. Vertical temperature control memory alloy spring; 9. Thermal conductive gasket. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0019] In the following description, specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in a variety of other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] refer to Figure 1 and Figure 2A variable damping vertical vibration reduction buffer device comprises an upper cavity shell 1 and a lower cavity shell 2. The inner cavity of the lower cavity shell 2 is provided with a viscous liquid 3. The center position of the upper surface of the lower cavity shell 2 is connected with a nozzle 4 with a nozzle facing upward. The nozzle 4 is fixed to the lower cavity shell 2 by a tight bonding method. The upper end opening of the nozzle 4 extends into the bottom of the upper cavity shell 1 and the two are connected. The nozzle 4 is fixed to the upper cavity shell 1 by a tight bonding method. An annular honeycomb vibration reduction structure 5 is horizontally arranged in the upper cavity shell 1. The middle part of the honeycomb vibration reduction structure 5 surrounds the upper cavity. The center position of the upper cavity is provided with An air spring 6, wherein the upper end surface of the air spring 6 is fixedly connected to the inner wall of the upper end surface of the upper cavity shell 1, and a plurality of transverse springs 7 are fixedly connected to the circumference of the air spring 6, and the other end of each of the transverse springs 7 is fixedly connected to the inner wall of the honeycomb vibration damping structure 5; a plurality of vertical temperature-controlled memory alloy springs 8 are arranged between the upper cavity shell 1 and the lower cavity shell 2, and the upper and lower ends of each of the vertical temperature-controlled memory alloy springs 8 are fixedly connected to the lower end outer wall of the upper cavity shell 1 and the upper end outer wall of the lower cavity shell 2 through a thermally conductive gasket 9, and the thermally conductive gasket 9 and the vertical temperature-controlled memory alloy spring 8 are fixed by welding.

[0021] In the above embodiments, the vertical vibration load causes the upper cavity shell 1 to deform, consuming part of the energy, and then the vibration load is transmitted to the honeycomb vibration reduction structure 5 through the upper cavity shell 1. The vibration propagates inside the honeycomb vibration reduction structure 5, causing it to deform, further consuming energy. The vibration load of the upper cavity shell 1 is transmitted to the vertical temperature-controlled memory alloy spring 8, causing the vertical temperature-controlled memory alloy spring 8 to deform and consume energy. The vibration load is then transmitted to the lower cavity shell 2 through the vertical temperature-controlled memory alloy spring 8, causing the lower cavity shell 2 to deform and consume energy. The deformation of the lower cavity shell 2 squeezes the viscous liquid 3, and then overcomes gravity and is sprayed into the upper cavity through the upper nozzle of the nozzle 4 to consume energy. At the same time, the impact force of the viscous liquid 3 injection causes the air spring 6 to deform and consume energy. The transverse spring 7 connected to the air spring 6 is under the action of pressure. It will also deform, thereby squeezing the honeycomb vibration damping structure 5 to deform, further consuming energy. During this process, the vibration will cause the temperature of the viscous liquid 3 in the upper cavity shell 1 and the lower cavity shell 2 to rise. The heat generated by the viscous liquid 3 is first transferred to the upper cavity shell 1 and the lower cavity shell 2 respectively, and then transferred to the thermal conductive gasket 9 through the upper cavity shell 1 and the lower cavity shell 2. The temperature of the thermal conductive gasket 9 bonded at both ends of the vertical temperature-controlled memory alloy spring 8 increases, prompting the vertical temperature-controlled memory alloy spring 8 to reset, thereby driving the rest of the device to reset. During the whole process, due to the non-continuous fluid impact force and the external space pressure conditions, the wide-band buffering and vibration reduction ability of the air spring 6 is stimulated, and the honeycomb vibration damping structure 5 is continuously deformed under the action of the vibration load, so that the overall response frequency of the device changes, thereby attenuating vibration energy of different frequencies.

[0022] Further, refer to Figure 1 and Figure 2 The cross-sectional shape of the honeycomb vibration damping structure 5 is annular, and the honeycomb vibration damping structure 5 comprises a plurality of horizontally stacked unit cells distributed in an annular shape, the longitudinal section of each unit cell is a regular hexagon, and a plurality of holes are arranged on the walls of adjacent unit cells; the lower half of the honeycomb vibration damping structure 5 is filled with a viscous liquid 3.

[0023] In the above embodiments, since there is viscous liquid 3 inside the honeycomb vibration damping structure 5, under the action of vibration load, the viscous liquid 3 collides with the inner wall of the honeycomb vibration damping structure 5 and flows into the adjacent cells through tiny pore channels to consume energy.

[0024] Further, refer to Figure 1 The horizontal cross-sectional shape of the upper cavity shell 1 is circular or elliptical; the horizontal cross-sectional shape of the lower cavity shell 2 is circular or elliptical.

[0025] In the above embodiments, by limiting the shapes of the upper cavity shell 1 and the lower cavity shell 2 , the shape of the honeycomb vibration reduction structure 5 can be coordinated to improve the vibration reduction and energy dissipation effect.

[0026] Further, refer to Figure 1 The nozzle 4 is formed by connecting a plurality of rubber rings whose sizes gradually decrease from bottom to top, and the lowest rubber ring is connected to the lower cavity shell 2.

[0027] In the above embodiments, the nozzle 4 is a hollow rubber ring tube, which can connect the upper cavity shell 1 and the lower cavity shell 2. By limiting the nozzle 4 to be connected by a plurality of rubber rings whose sizes gradually decrease from bottom to top, the opening nozzle part of the nozzle 4 is smaller, so that the viscous liquid 3 has a greater impact force when moving upward.

[0028] Further, refer to Figure 1 The air spring 6 includes a plurality of airbags stacked in sequence from top to bottom, and adjacent airbags are fixedly connected to each other. The top of the topmost airbag is fixedly connected to the top wall of the upper cavity shell 1, and the circumference of one of the middle airbags is connected to the inner wall of the honeycomb vibration reduction structure 5 through a plurality of transverse springs 7.

[0029] In the above embodiments, specifically, each of the transverse springs 7 is connected to the outer end of the maximum diameter of the airbag of the air spring 6. By limiting that each transverse spring 7 is connected to the outer end of the maximum diameter of the airbag of the air spring 6, it can be achieved that after the air spring 6 is deformed, it will drive the transverse spring 7 to give deformation force to the honeycomb vibration damping structure 5, and after the limitation, the force will become maximum.

[0030] Further, refer to Figure 1 , the gas inside the air spring 6 is compressed air.

[0031] In the above embodiments, the air spring 6 is usually filled with compressed air.

[0032] Further, refer to Figure 1 , the gas inside the air spring 6 is a flame retardant inert gas.

[0033] In the above embodiments, the flame retardant inert gas includes helium, neon, argon, krypton, etc., which have very low melting points and boiling points and have good stability at high temperatures.

[0034] Further, refer to Figure 1 The upper cavity shell 1, the lower cavity shell 2, and the honeycomb vibration reduction structure 5 are made of rubber; the transverse spring 7 is made of carbon steel; and the thermal conductive gasket 9 is made of copper.

[0035] In the above embodiments, by limiting the material of the upper cavity shell 1, the lower cavity shell 2 and the honeycomb vibration damping structure 5 to rubber, deformation and shape recovery can be facilitated, and the material of the transverse spring 7 is carbon steel with good ductility, which can be achieved by setting the material of the thermal conductive gasket 9 to copper.

[0036] Compared with the existing shock absorber, the present invention has the following advantages:

[0037] Combining the traditional honeycomb vibration damping structure 5 with the air spring 6, the present invention not only has the advantages of high specific stiffness, specific strength and specific energy absorption of the honeycomb vibration damping structure 5 and large damping value at low frequency and small damping value at high frequency of the air spring 6, but also utilizes the non-continuous fluid impact force generated by the vertical vibration load and the external space pressure to stimulate the wide-band buffering and vibration damping ability of the air spring 6, so that the overall response frequency of the device changes dynamically, thereby attenuating vibration energy of different frequencies;

[0038] The reset system composed of the transverse spring 7, the vertical temperature-controlled memory alloy spring 8, and the heat-conducting gasket 9 generates deformation and consumes energy after being subjected to the vibration load, and uses the vibration load to convert into heat energy to reset the vertical temperature-controlled memory alloy spring 8, and then drives the rest of the device to reset, so that the present invention can be recycled;

[0039] The structure is simple, and it is convenient to manufacture and replace parts, and easy to use for a long time.

[0040] Although the present invention has been described in detail in this specification by means of general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements may be made thereto on the basis of the present invention. Therefore, these modifications or improvements made without departing from the present invention all fall within the scope of protection claimed by the present invention.

Claims

1. A variable damping vertical vibration reduction buffer device, comprising an upper cavity shell (1) and a lower cavity shell (2), characterized in that: The lower cavity shell (2) is provided with a viscous liquid (3), and a nozzle (4) with a nozzle facing upward is connected to the center of the upper surface of the lower cavity shell (2), and the upper end opening of the nozzle (4) is connected to the bottom of the upper cavity shell (1); an annular honeycomb vibration reduction structure (5) is horizontally arranged in the upper cavity shell (1), and the middle part of the honeycomb vibration reduction structure (5) forms an upper cavity, and an air spring (6) is arranged at the center of the upper cavity, and the upper end surface of the air spring (6) is fixedly connected to the inner wall of the upper end surface of the upper cavity shell (1), and a plurality of transverse springs (7) are fixedly connected to the circumference of the air spring (6), and the other end of each of the transverse springs (7) is fixedly connected to the inner side wall of the honeycomb vibration reduction structure (5); A plurality of vertical temperature-controlled memory alloy springs (8) are arranged between the upper cavity shell (1) and the lower cavity shell (2), and the upper and lower ends of each of the vertical temperature-controlled memory alloy springs (8) are fixedly connected to the lower outer wall of the upper cavity shell (1) and the upper outer wall of the lower cavity shell (2) via a heat-conducting gasket (9); The cross-sectional shape of the honeycomb vibration damping structure (5) is annular, and the honeycomb vibration damping structure (5) comprises a plurality of horizontally stacked unit cells distributed in an annular shape, the longitudinal section of each unit cell is a regular hexagon, and a plurality of holes are arranged on the walls of adjacent unit cells; the lower half of the honeycomb vibration damping structure (5) is filled with a viscous liquid (3); The horizontal cross-sectional shape of the upper cavity shell (1) is circular or elliptical; the horizontal cross-sectional shape of the lower cavity shell (2) is circular or elliptical; The nozzle (4) is formed by connecting a plurality of rubber rings whose sizes gradually decrease from bottom to top, and the lowest rubber ring is connected to the lower cavity shell (2).

2. A variable damping vertical vibration reduction buffer device according to claim 1, characterized in that: The air spring (6) comprises a plurality of airbags stacked in sequence from top to bottom, adjacent airbags are fixedly connected, the top of the uppermost airbag is fixedly connected to the top wall of the upper cavity shell (1), and the circumference of one of the middle airbags is connected to the inner wall of the honeycomb vibration reduction structure (5) via a plurality of the transverse springs (7).

3. A variable damping vertical vibration reduction buffer device according to claim 2, characterized in that: The gas inside the air spring (6) is compressed air.

4. A variable damping vertical vibration reduction buffer device according to claim 2, characterized in that: The gas inside the air spring (6) is a flame-retardant inert gas.

5. A variable damping vertical vibration reduction buffer device according to claim 1, characterized in that: The upper cavity shell (1), the lower cavity shell (2), and the honeycomb vibration reduction structure (5) are made of rubber; the transverse spring (7) is made of carbon steel; and the thermal conductive gasket (9) is made of copper.

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