Multi-mode composite damping device

Abstract

The multi-mode composite damping device comprises an air bag, a movable supporting assembly, a steel wire rope damper and a base, the air bag is a cavity made of rubber, the movable supporting assembly comprises an upper supporting plate, a supporting column and a lower supporting plate, the supporting column is inserted into the top end of the air bag and extends in the direction of the bottom end of the air bag, and the air bag is fixedly connected with the supporting column; the upper supporting plate is located outside the top end of the air bag and fixedly connected with the end of the supporting column, the lower supporting plate is located in the air bag, the end of the lower supporting plate is fixedly connected with the bottom end of the air bag, and the steel wire rope vibration damper is located in the air bag and comprises a fixing part and an elastic part, the supporting column is sleeved with the fixing part, and the fixing part is slidably connected with the supporting column. The elastic part is composed of a plurality of steel wire ropes, one ends of the steel wire ropes are fixedly connected with the side face of the fixing part, the other ends of the steel wire ropes are fixedly connected with the side face of the lower supporting plate, and the base is fixedly connected to the bottom of the outer side of the air bag.

Description

Technical Field

[0001] The invention relates to the field of vibration reduction devices, and in particular to a multi-modal composite vibration reduction device. Background Art

[0002] During the transportation of precision instruments, the vibration generated during transportation can easily cause structural fatigue or friction at the connection position of the transported product, resulting in damage to the transported product. In order to improve the transportation performance during transportation and thus reduce or isolate the transportation vibration, a vibration reduction device is required to absorb the vibration energy during the process.

[0003] At present, the transport vibration reduction devices mainly use wire rope vibration reduction devices, spring vibration reduction devices, rubber vibration reduction devices, etc. Although these vibration reduction devices have certain vibration reduction performance, they also have some usage problems. For example, the wire rope vibration reduction device has good vibration reduction performance, but the vibration reduction frequency is relatively high, and the effect is average for low-frequency transport vibration reduction. For example, the airbag vibration reduction device has the advantages of low vibration reduction frequency and excellent vibration reduction performance, but it also has the disadvantages of large vibration reduction swing and easy bursting of the airbag, resulting in poor vibration reduction effect. Summary of the invention

[0004] To achieve the above-mentioned purpose and other related purposes, the present invention discloses a multi-modal composite vibration damping device, comprising: an airbag, a movable support assembly, a wire rope vibration damper and a base, the airbag is a cavity made of rubber material, the movable support assembly comprises an upper support plate, a support column and a lower support plate, the support column is inserted at the top end of the airbag and extends along the direction of the bottom end of the airbag, the airbag is fixedly connected to the support column, the upper support plate is located outside the top end of the airbag, and the upper support plate is fixedly connected to the end of the support column, the lower support plate is located in the airbag, and the end of the lower support plate is fixedly connected to the bottom end of the airbag, the wire rope vibration damper is located inside the airbag, and comprises a fixed part and an elastic part, the fixed part is sleeved around the support column, and the fixed part is slidably connected to the support column, the elastic part is composed of a plurality of steel wire ropes, one end of the plurality of steel wire ropes is fixedly connected to the side of the fixed part, the other end of the steel wire rope is fixedly connected to the side of the lower support plate, and the base is fixedly connected to the bottom of the outer side of the airbag.

[0005] Furthermore, it also includes a supporting bushing, which includes a connecting plate and a connecting tube. The supporting bushing is located in the airbag, the connecting tube is located between the fixed part and the support column, the connecting tube is sleeved around the support column, the connecting tube is fixedly connected to the support column, the connecting tube is slidably connected to the fixed part, the connecting plate is located between the connecting tube and the top of the airbag, the connecting plate is sleeved around the support column and one end of the connecting plate is fixedly connected to the inner surface of the top of the airbag, and the other end is fixedly connected to the upper end of the connecting tube.

[0006] Furthermore, a damping pad is fixedly provided on the upper surface of the lower support plate, the damping pad is located directly below the support column, and the support column and the damping pad are not in contact in a natural state.

[0007] Furthermore, a limiting ring is fixedly arranged on the lower support plate, the damping pad is located inside the limiting ring, and the support column is slidably connected to the limiting ring.

[0008] Furthermore, limiting plates are fixedly arranged around the support column.

[0009] Furthermore, a balance spring is arranged around the support column, one end of the balance spring is fixedly connected to the upper surface of the limiting plate, and the other end of the balance spring is fixedly connected to the lower surface of the fixing part.

[0010] Furthermore, the upper surface of the upper support plate is provided with mounting holes for mounting the vibration-damped product.

[0011] Furthermore, a fixing hole for fixing is provided on the lower surface of the base.

[0012] By adopting the above technical solution, when subjected to pressure, the airbag will first reduce the pressure shock. When the pressure continues to increase to the point where the airbag cannot absorb the impact force, the balance spring, wire rope shock absorber and damping pad will successively absorb and reduce the impact force as the pressure increases. When the pressure is too high, the limit plate and the limit ring will contact to form a hard limit measure, forming a hard protection for the airbag and the damped product, providing a variety of vibration reduction methods, combining the advantages of the airbag and the wire rope shock absorber, and having a good vibration reduction effect, which is beneficial to the safety of the damped product. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present disclosure. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, among which:

[0014] Figure 1 It is an overall schematic diagram of a multi-modal composite vibration reduction device; Figure 2 is a cross-sectional schematic diagram of a multi-modal composite vibration reduction device; Figure 3 It is a schematic diagram of the working state of the present invention.

[0015] Figure numerals: 1. airbag, 2. movable support assembly, 21. upper support plate, 22. support column, 23. lower support plate, 24. limit plate, 3. wire rope vibration absorber, 31. fixing part, 32. elastic part, 4. base, 5. support bushing, 51. connecting plate, 52. connecting tube, 6. damping pad, 7. limit ring, 8. balance spring, 9. installation hole, 10. fixing hole. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0017] Reference Figure 1 The embodiment of the present invention provides a multi-modal composite vibration reduction device, including an airbag 1, an active support assembly 2, a wire rope vibration reduction device 3 and a base 4. The wire rope vibration reduction device 3 is arranged inside the airbag 1, the base 4 is arranged at the bottom of the airbag 1, and the active support assembly 2 is inserted into the airbag 1. When the airbag 1 is subjected to pressure, the airbag 1, the active support assembly 2 and the wire rope vibration reduction device 3 cooperate with each other, which can give play to the respective vibration reduction advantages of the wire rope vibration reduction device 3 and the airbag 1, improve the vibration reduction performance, and benefit the safety of the transportation equipment.

[0018] Reference Figure 2 The airbag 1 is a cavity made of rubber material. The movable support assembly 2 includes an upper support plate 21, a support column 22 and a lower support plate 23. The support column 22 is inserted at the top of the center of the airbag 1 and extends along the bottom of the airbag 1. The airbag 1 is slidably connected to the support column 22. The upper support plate 21 is located outside the top of the airbag 1, and the upper support plate 21 is fixedly connected to the end of the support column 22; the lower support plate 23 is located in the airbag 1, the lower support plate 23 is located below the support column 22, and the end of the lower support plate 23 is fixedly connected to the bottom of the airbag 1. The upper surface of the upper support plate 21 is provided with an installation hole 9 for installing the vibration-damped product.

[0019] Reference Figure 2 A support bushing 5 is also provided in the airbag 1, and the support bushing 5 includes a connecting plate 51 and a connecting tube 52. The connecting tube 52 is sleeved around the support column 22, and the connecting tube 52 is located at the upper part of the support column 22 and is fixedly connected to the support column 22. The connecting plate 51 is located between the upper end of the connecting plate 51 and the top of the airbag 1. The connecting plate 51 is sleeved around the support column 22 and is fixedly connected to the support column 22. The upper surface of the connecting plate 51 is fixedly connected to the inner surface of the top of the airbag 1, and the lower surface of the connecting plate 51 is fixedly connected to the upper end surface of the connecting tube 52.

[0020] Reference Figure 2 The wire rope vibration damper 3 includes a fixed part 31 and an elastic part 32. The fixed part 31 is sleeved around the connecting tube 52, and the fixed part 31 is slidably connected to the connecting tube 52. The elastic part 32 is composed of multiple steel wire ropes, one end of the multiple steel wire ropes is fixedly connected to the side of the fixed part 31, and the other end of the steel wire rope is fixedly connected to the side of the lower support plate 23.

[0021] Reference Figure 2A damping pad 6 is arranged directly below the support column 22, and the damping pad 6 is fixedly connected to the center of the upper surface of the lower support plate 23. In a natural state, the support column 22 does not contact the damping pad 6. A limiting ring 7 is arranged around the damping pad 6, and the limiting ring 7 is fixedly connected to the lower support plate 23. The support column 22 is inserted into the limiting ring 7 and is slidably connected to the limiting ring 7.

[0022] Reference Figure 2 A limit plate 24 is also provided below the fixing portion 31. The limit plate 24 is sleeved around the support column 22, and the limit plate 24 is fixedly connected to the support column 22. A balance spring 8 is provided between the limit plate 24 and the fixing portion 31. The balance spring 8 is arranged around the support column 22, and the two ends of the balance spring 8 are fixedly connected to the lower surface of the fixing portion 31 and the upper surface of the limit plate 24, respectively.

[0023] Reference Figure 2 The base 4 is fixedly connected to the lower end of the outer portion of the airbag 1 , and a fixing hole 10 for fixing is provided on the lower surface of the base 4 .

[0024] Reference Figure 3 When it is necessary to reduce vibration of the transported goods, the airbag 1 is inflated. At this time, the internal pressure of the airbag 1 increases, and the connecting plate 51 drives the support column 22 to move upward. At this time, the limit plate 24 moves upward, causing the balance spring 8 to be compressed. At this time, the airbag 1 continues to be inflated until the balance spring 8 and the wire rope vibration damper 3 reach a force balance, and the airbag 1 is completely inflated. At this time, there is a certain distance between the support column 22 and the damping pad 6. At this time, when under pressure, only the airbag 1 performs the vibration reduction work. At this time, the vibration reduction frequency is low in the working state, and the vibration reduction performance is the best.

[0025] Reference Figure 3 , then connect the transported items to the upper support plate 21 through the mounting holes, and connect the base 4 to the bottom of the car through the fixing holes. During transportation, when subjected to vibration, the airbag 1 is first used to reduce vibration. When the external excitation continues to increase, the lift inside the airbag 1 is insufficient to support the downward impact of the damped item. At this time, the airbag 1 is compressed, driving the limit plate 24 to move downward, and the balance spring 8 and the airbag 1 jointly reduce vibration. When the external excitation continues to increase until the balance spring 8 is no longer compressed, the elastic part 32, the balance spring 8 and the airbag 1 jointly reduce vibration. At this time, as the external pressure increases, the support column 22 continues to move downward, and the support column 22 contacts the damping pad 6, which absorbs and dissipates a large amount of impact energy to buffer the vibration.

[0026] Reference Figure 3When the external excitation continues to increase until it increases to a level that the airbag 1, the elastic part 32 and the damping pad 6 can no longer withstand, the support column 22 continues to move downward. At this time, the limit plate 24 contacts the limit ring 7, and the deformation degree of the airbag 1 is hard limited. At this time, the full protection failure state is triggered. Through hard protection measures, the safety of the damped product and the safety of the vibration reduction device are guaranteed.

[0027] The embodiment of the present invention discloses a multi-modal composite vibration reduction device. When subjected to pressure, the airbag 1 first reduces the pressure shock. When the pressure continues to increase to the point where the airbag 1 cannot absorb the impact force, the balance spring 8, the wire rope vibration reducer 3 and the damping pad 6 will successively absorb and reduce the impact force as the pressure increases. When the pressure is too high, the limit plate 24 and the limit ring 7 contact to form a hard limit measure, forming a hard protection for the airbag 1 and the damped product, providing a variety of vibration reduction means, combining the advantages of the airbag 1 and the wire rope vibration reducer 3, and having a good vibration reduction effect, which is beneficial to the safety of the damped product.

[0028] Those skilled in the art will appreciate that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-modal composite vibration reduction device, characterized in that: include: The invention relates to an airbag (1), a movable support assembly (2), a wire rope vibration damper (3) and a base (4), wherein the airbag (1) is a cavity made of rubber material, the movable support assembly (2) comprises an upper support plate (21), a support column (22) and a lower support plate (23), the support column (22) is inserted at the top end of the airbag (1) and extends along the bottom end of the airbag (1), the airbag (1) is fixedly connected to the support column (22), the upper support plate (21) is located outside the top end of the airbag (1), and the upper support plate (21) is fixedly connected to the end of the support column (22), and the lower support plate (23) is located at the bottom end of the airbag (1). The airbag (1) is provided with a bottom end of a lower support plate (23) fixedly connected to the bottom end of the airbag (1). The wire rope vibration damper (3) is located inside the airbag (1) and comprises a fixed portion (31) and an elastic portion (32). The fixed portion (31) is sleeved around the support column (22), and the fixed portion (31) is slidably connected to the support column (22). The elastic portion (32) is composed of a plurality of wire ropes. One end of the plurality of wire ropes is fixedly connected to the side of the fixed portion (31), and the other end of the wire ropes is fixedly connected to the side of the lower support plate (23). The base (4) is fixedly connected to the outer bottom of the airbag (1).

2. A multi-modal composite vibration reduction device according to claim 1, characterized in that: The invention also comprises a support bushing (5), the support bushing (5) comprising a connecting plate (51) and a connecting tube (52), the support bushing (5) being located in the airbag (1), the connecting tube (52) being located between the fixing portion (31) and the support column (22), the connecting tube (52) being sleeved around the support column (22), the connecting tube (52) being fixedly connected to the support column (22), the connecting tube (52) being slidably connected to the fixing portion (31), the connecting plate (51) being located between the connecting tube (52) and the top end of the airbag (1), the connecting plate (51) being sleeved around the support column (22), one end of the connecting plate (51) being fixedly connected to the inner surface of the top end of the airbag (1), and the other end being fixedly connected to the upper end of the connecting tube (52).

3. A multi-modal composite vibration reduction device according to claim 1, characterized in that: A damping pad (6) is fixedly provided on the upper surface of the lower support plate (23), the damping pad (6) is located directly below the support column (22), and in a natural state, the support column (22) and the damping pad (6) are not in contact.

4. A multi-modal composite vibration reduction device according to claim 3, characterized in that: The lower support plate (23) is fixedly provided with a limiting ring (7), the damping pad (6) is located inside the limiting ring (7), and the support column (22) is slidably connected to the limiting ring (7).

5. The multi-modal composite vibration reduction device according to claim 1, characterized in that: Limiting plates (24) are fixedly arranged around the support column (22).

6. A multi-modal composite vibration reduction device according to claim 5, characterized in that: The support column (22) is provided with a balance spring (8) around it, one end of the balance spring (8) is fixedly connected to the upper surface of the limit plate (24), and the other end of the balance spring (8) is fixedly connected to the lower surface of the fixing portion (31).

7. The multi-modal composite vibration reduction device according to claim 1, characterized in that: The upper surface of the upper support plate (21) is provided with mounting holes (9) for mounting the product to be damped.

8. The multi-modal composite vibration reduction device according to claim 1, characterized in that: The lower surface of the base (4) is provided with a fixing hole (10) for fixing.

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