CN110118237B - Combined type broadband vibration and noise reduction device - Google Patents
Combined type broadband vibration and noise reduction device Download PDFInfo
- Publication number
- CN110118237B CN110118237B CN201910455121.8A CN201910455121A CN110118237B CN 110118237 B CN110118237 B CN 110118237B CN 201910455121 A CN201910455121 A CN 201910455121A CN 110118237 B CN110118237 B CN 110118237B
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- Prior art keywords
- spring
- piston rod
- air bag
- elastic component
- noise reduction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/002—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising at least one fluid spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
- F16F9/08—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid where gas is in a chamber with a flexible wall
- F16F9/088—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid where gas is in a chamber with a flexible wall comprising a gas spring with a flexible wall provided within the cylinder on the piston rod of a monotubular damper or within the inner tube of a bitubular damper
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/30—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium
- F16F9/303—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium the damper being of the telescopic type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/54—Arrangements for attachment
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a combined type broadband vibration and noise reduction device, which comprises: the device comprises a cylinder, a base, a lower elastic component, an air bag, an upper elastic component and a piston rod; the cylinder is internally provided with a base, a lower elastic component, an air bag, an upper elastic component and a piston rod from bottom to top in sequence, and the cylinder is filled with viscous damping materials; the base is fixedly connected with the bottom end of the lower elastic component; the upper end of the lower elastic component is fixedly connected with the lower end of the air bag, the upper end of the air bag is fixedly connected with the lower end of the upper elastic component, and the upper elastic component is fixedly connected with the piston rod; the cylinder cover of the cylinder body is provided with a piston hole matched with the piston rod, and the piston rod penetrates through the piston hole and is connected with the cylinder cover in a sealing way. The device enlarges the working frequency range of the viscous fluid damper, has higher vibration attenuation effect, can adjust the corresponding working frequency range according to actual requirements, is suitable for building structures, traffic stations, urban rails and high-speed railways, and can also be applied to vibration isolation of precise mechanical equipment.
Description
Technical Field
The invention relates to the field of vibration and noise reduction equipment, in particular to a combined type broadband vibration and noise reduction device which is used for vibration isolation of building structures, traffic stations, urban rails and high-speed railways and also can be applied to precise mechanical equipment.
Background
The control mechanism of the viscous fluid damper is that the vibration energy transferred from the upper part in the fluid movement process is converted into heat energy, so that the energy consumption and vibration reduction effects are achieved. The existing viscous fluid damper mainly plays a role in a low-frequency section, and has the problems of narrow working frequency range and limited vibration reduction effect.
Disclosure of Invention
In order to solve the above problems, the present invention provides a combined broadband vibration damping and noise reducing device, which expands the working frequency range of the viscous fluid damper, has a high vibration damping effect, can adjust the corresponding working frequency range according to the actual requirements, is suitable for building structures, traffic stations, urban rails and high-speed railways, and can also be applied to vibration isolation of precision mechanical equipment.
In order to achieve the above object, the present invention adopts the following technical solutions.
A composite broadband vibration and noise reduction device comprises: the device comprises a cylinder, a base, a lower elastic component, an air bag, an upper elastic component and a piston rod; the cylinder body is internally provided with a base, a lower elastic component, an air bag, an upper elastic component and a piston rod in sequence from bottom to top, and the cylinder body is filled with viscous damping materials; the base is arranged at the bottom of the cylinder body and is fixedly connected with the bottom end of the lower elastic component; the upper end of the lower elastic component is fixedly connected with the lower end of the air bag, the upper end of the air bag is fixedly connected with the lower end of the upper elastic component, and the upper elastic component is fixedly connected with the piston rod; and a piston hole matched with the piston rod is formed in the cylinder cover of the cylinder body, and the piston rod penetrates through the piston hole and is connected with the cylinder cover in a sealing mode.
Preferably, the upper elastic component is an upper spring, and the lower elastic component is a lower spring.
Preferably, the minor axis length of the air bladder is greater than the minimum distance between the upper and lower springs.
Preferably, the number of the upper springs and the number of the lower springs are respectively multiple, wherein the multiple upper springs are connected through fixing buckles; the lower springs are connected through fixing buckles.
Preferably, the air bag is provided with a plurality of layers of additional air chambers.
Preferably, the upper spring and the lower spring are respectively a plate spring, a disc spring, a ring spring, a cylindrical or conical coil spring.
Preferably, the viscous damping material is one or more of oil, silicone oil and silica gel.
Preferably, the material of the wall of the air bag is rubber, metal or a rubber-metal composite material.
Preferably, the base is connected with the bottom end of the lower spring in a welding manner; the upper end of the lower spring is connected with the lower end of the air bag through a bolt, the upper end of the air bag is connected with the lower end of the upper spring through a bolt, and the lower end of the upper spring is welded or connected with the piston rod through a bolt; the piston rod is connected with the cylinder cover in a welding mode.
Preferably, the bottom end of the piston rod and the upper end of the base are respectively provided with a connecting plate.
Compared with the prior art, the invention has the beneficial effects that:
(1) the combined type broadband vibration and noise reduction device provided by the invention integrates multi-band vibration reduction and noise reduction into a whole by utilizing the variable stiffness and high-frequency vibration isolation characteristics of the air bag, the large-damping vibration reduction characteristic of the viscous damping material and the low-frequency vibration isolation and buffering impact advantages of the spring, so that the working frequency range is expanded, and the vibration reduction effect is greatly improved.
(2) The composite broadband vibration-damping noise-reducing device obtained by the invention can change the vibration-damping effect correspondingly by adjusting the thickness and the size of the air bag and the number, the layer number and the rigidity of the springs, and the vibration-isolating frequency range and the damping of the device have larger design free space.
(3) The composite broadband vibration reduction and noise reduction device is simple in manufacturing method, high in reliability, easy to use in severe environment and excellent in applicability to vibration reduction and isolation parts such as building structures, traffic stations, urban rails and high-speed railways.
Drawings
The invention is described in further detail below with reference to the figures and specific embodiments.
Fig. 1 is a schematic structural diagram of the composite broadband vibration and noise reduction device of the present invention.
In the above figures: 1, a cylinder body; 101 a cylinder cover; 2, a base; 3, a lower spring; 4, an air bag; 401 a balloon wall; 5, spring mounting; 6 a piston rod; 7 viscous damping material; 8, fixing a buckle; 9 connecting the plates.
Detailed Description
Referring to fig. 1, a composite broadband vibration/noise reduction device according to an embodiment of the present disclosure includes: the device comprises a cylinder body 1, a base 2, a lower spring 3, an air bag 4, an upper spring 5 and a piston rod 6; wherein, from bottom to top sets gradually base 2, lower spring 3, gasbag 4, upper spring 5 and piston rod 6 in barrel 1, and the intussuseption of barrel 1 is filled with viscous damping material 7, and viscous damping material 7 is located the outside of gasbag 4. The base 2 is arranged at the bottom of the barrel 1, and the base 2 is welded with the bottom end of the lower spring 3; the upper end of the lower spring 3 is connected with the lower end of the air bag 4 through a bolt, and the upper end of the air bag 4 is connected with the lower end of the upper spring 5 through a bolt. The upper spring 5 is welded or bolted with the piston rod 6; the cylinder cover 101 of the cylinder 1 is provided with a piston hole matched with the piston rod 6, and the piston rod 6 penetrates through the piston hole and is welded with the cylinder cover 101 to be sealed. The upper end of the piston rod 6 is movably connected with a pressing plate.
Wherein the length of the minor axis of the air bag 4 is greater than the minimum distance between the upper spring 5 and the lower spring 3. The number of the upper springs 5 and the number of the lower springs 3 are respectively multiple, wherein the multiple upper springs 5 are connected through fixing buckles 8; the lower springs 3 are connected through fixing buckles 8. The air bag 4 has a plurality of additional air chambers in multiple layers. The fixing buckles 8 are respectively symmetrically arranged on the upper spring 5 and the lower spring 3 by taking the central line of the piston rod 6 as an axis, and can be respectively arranged in multiple layers and wrapped on the outer sides of the corresponding springs.
The upper spring 5 and the lower spring 3 are respectively a plate spring, a disc spring, an annular spring, a cylindrical or conical spiral spring. The viscous damping material 7 is one or more of oil, silicon oil and silica gel. The material of the balloon wall 401 of the balloon 4 is rubber, metal or a rubber-metal composite multilayer material.
The manufacturing method of the composite broadband vibration and noise reduction device comprises the following steps:
first, base 2 and lower spring 3's lower extreme welding, the bottom surface center of rethread bolt 4 is connected with lower spring 3's upper end, adopt bolted connection with gasbag 4's top surface center and last spring 5 after that, then with the lower extreme welded connection of last spring 5 and piston rod 6, lower spring 3 with connecting, gasbag 4, go up spring 5 and piston rod 6's device and put into open-ended barrel 1, inject viscous damping material 7 into barrel 1, pass the piston hole on barrel cover 101 of barrel 1 with piston rod 6 at last, weld barrel cover 101 on barrel 1, can install the top board on barrel cover 101, form the device of making an uproar falls in sealed combined type wide band damping.
The working principle of the combined type broadband vibration and noise reduction device is as follows:
vibration energy transmitted from the upper part of the combined type broadband vibration and noise reduction device is transmitted into the barrel 1 through the piston rod 6, the vibration of the piston rod 6 drives the upper spring 5 to expand and contract to consume energy, the vibration of the upper spring 5 drives the internal volume of the air bag 4 to dynamically change, the air bag 4 is similar to an air spring, the volume of the air bag 4 is increased and reduced, so that the dynamic damping of internal gas is changed, meanwhile, the air bag 4 is subjected to the vibration energy transmitted through the upper spring 5, and the effect of broadband vibration isolation of the dynamic variable damping air spring is achieved. The vibration of the air bag 4 drives the lower spring 3 to expand and consume energy, and the expansion and contraction of the space volume enclosed by the upper spring 5, the air bag 4 and the lower spring 3 generate pressure on the viscous damping material 7 in the space volume, so that the viscous damping material 7 flows to a surrounding low-pressure area and further flows to rub and consume energy.
The invention utilizes the variable stiffness and high frequency vibration isolation characteristics of the air bag 4, the large damping vibration attenuation characteristic of the viscous damping material 7 and the low frequency vibration isolation and buffering impact advantages of the spring to integrate multi-band vibration attenuation and noise reduction, overcomes the defects of poor vibration attenuation effect, narrow vibration attenuation frequency spectrum and large generated noise of the existing vibration absorber, and greatly improves the vibration attenuation efficiency.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such changes and modifications of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such changes and modifications.
Claims (10)
1. A combined type broadband vibration and noise reduction device is characterized by comprising: the method comprises the following steps: the device comprises a cylinder body (1), a base (2), a lower elastic component, an air bag (4), an upper elastic component and a piston rod (6); the damping device comprises a cylinder body (1), wherein a base (2), a lower elastic part, an air bag (4), an upper elastic part and a piston rod (6) are sequentially arranged in the cylinder body (1) from bottom to top, and a viscous damping material (7) is filled in the cylinder body (1);
the base (2) is arranged at the bottom of the barrel (1), and the base (2) is fixedly connected with the bottom end of the lower elastic component; the upper end of the lower elastic component is fixedly connected with the lower end of the air bag (4), the upper end of the air bag (4) is fixedly connected with the lower end of the upper elastic component, and the upper elastic component is fixedly connected with the piston rod (6);
the cylinder cover (101) of the cylinder body (1) is provided with a piston hole matched with the piston rod (6), and the piston rod (6) penetrates through the piston hole and is connected with the cylinder cover (101) in a sealing mode.
2. The hybrid broadband vibration/noise reduction device according to claim 1, wherein the upper elastic member is an upper spring (5), and the lower elastic member is a lower spring (3).
3. The hybrid broadband vibration and noise reduction device according to claim 2, wherein the minor axis length of the air bag (4) is greater than the minimum distance between the upper spring (5) and the lower spring (3).
4. The combined broadband vibration and noise reduction device according to claim 2, wherein the number of the upper springs (5) and the number of the lower springs (3) are plural, and the plural upper springs (5) are connected with each other through a fixing buckle (8); the lower springs (3) are connected through fixing buckles (8).
5. The hybrid broadband vibration and noise reduction device according to claim 2, wherein the air bag (4) is provided with a plurality of additional air chambers in a plurality of layers.
6. The combined broadband vibration and noise reduction device according to claim 2, wherein the upper spring (5) and the lower spring (3) are respectively a plate spring, a disc spring, a ring spring, a cylindrical or conical coil spring.
7. The composite broadband vibration and noise reduction device according to claim 2, wherein the viscous damping material (7) is one or more of oil, silicone oil, and silica gel.
8. The composite broadband vibration and noise reduction device according to claim 2, wherein the material of the airbag wall (401) of the airbag (4) is rubber, metal or a rubber-metal composite material.
9. The combined broadband vibration and noise reduction device according to claim 2, wherein the base (2) is welded to the bottom end of the lower spring (3); the upper end of the lower spring (3) is in bolted connection with the lower end of the air bag (4), the upper end of the air bag (4) is in bolted connection with the lower end of the upper spring (5), and the lower end of the upper spring (5) is welded or in bolted connection with the piston rod (6); the piston rod (6) is connected with the cylinder cover (101) in a welding mode.
10. The broadband vibration and noise reduction device according to claim 2, wherein the bottom end of the piston rod (6) and the upper end of the base (2) are respectively provided with a connecting plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910455121.8A CN110118237B (en) | 2019-05-29 | 2019-05-29 | Combined type broadband vibration and noise reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910455121.8A CN110118237B (en) | 2019-05-29 | 2019-05-29 | Combined type broadband vibration and noise reduction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110118237A CN110118237A (en) | 2019-08-13 |
| CN110118237B true CN110118237B (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910455121.8A Active CN110118237B (en) | 2019-05-29 | 2019-05-29 | Combined type broadband vibration and noise reduction device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111473082B (en) * | 2020-05-14 | 2021-04-30 | 长安大学 | Memory metal air spring particle damper |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10047539A1 (en) * | 2000-09-22 | 2002-04-11 | Goldschmitt Techmobil Gmbh | Strut system for use in car wheel suspension comprises telescopic strut with two spring plates mounted above it with air spring between plates |
| CN102797785A (en) * | 2012-09-04 | 2012-11-28 | 谢宁 | Single-rod air bag type magnetorheological damper |
| CN106438814A (en) * | 2016-11-30 | 2017-02-22 | 江门市英之杰机车部件有限公司 | Gasbag shock absorber |
| CN208734791U (en) * | 2018-08-10 | 2019-04-12 | 吴江市金诺通风减震设备厂 | A kind of novel air damper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW520422B (en) * | 2000-07-19 | 2003-02-11 | Yu-Shiue Ju | Inflated ball-type damping and shock-absorbing device |
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2019
- 2019-05-29 CN CN201910455121.8A patent/CN110118237B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10047539A1 (en) * | 2000-09-22 | 2002-04-11 | Goldschmitt Techmobil Gmbh | Strut system for use in car wheel suspension comprises telescopic strut with two spring plates mounted above it with air spring between plates |
| CN102797785A (en) * | 2012-09-04 | 2012-11-28 | 谢宁 | Single-rod air bag type magnetorheological damper |
| CN106438814A (en) * | 2016-11-30 | 2017-02-22 | 江门市英之杰机车部件有限公司 | Gasbag shock absorber |
| CN208734791U (en) * | 2018-08-10 | 2019-04-12 | 吴江市金诺通风减震设备厂 | A kind of novel air damper |
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| Publication number | Publication date |
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| CN110118237A (en) | 2019-08-13 |
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