CN107237418B - Height-adjustable shock absorber and anechoic chamber - Google Patents
Height-adjustable shock absorber and anechoic chamber Download PDFInfo
- Publication number
- CN107237418B CN107237418B CN201710608891.2A CN201710608891A CN107237418B CN 107237418 B CN107237418 B CN 107237418B CN 201710608891 A CN201710608891 A CN 201710608891A CN 107237418 B CN107237418 B CN 107237418B
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- China
- Prior art keywords
- shock absorber
- height
- anechoic chamber
- damping pad
- adjustable shock
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/0007—Base structures; Cellars
Abstract
The invention discloses a height-adjustable shock absorber which is characterized in that: it includes damping pad (1), with damping pad (1) rotatable coupling adjust pole (2) and with adjust protective housing (3) that pole (2) link to each other, protective housing (3) with adjust pole (2) and pass through threaded connection and height-adjustable. The protective shell (3) can contain the damping pad (1) when being adjusted to the lowest position, and the section of the protective shell (3) is in a step shape which is changed from small to big. The invention also discloses an anechoic chamber provided with the shock absorber, wherein the shock absorber is arranged in a concrete platform (7) of the anechoic chamber, and the height or the level of the anechoic chamber can be adjusted through the shock absorber. The vibration absorber has the advantages of simple structure, convenient operation, uniform stress of each vibration absorber and better vibration absorbing effect.
Description
Technical Field
The invention relates to a height-adjustable shock absorber and an anechoic chamber.
Background
The anechoic chamber is not only a special laboratory for acoustic testing, but also an important component of a testing system, and actually is one of acoustic testing devices, and acoustic performance indexes of the anechoic chamber directly influence the testing accuracy. In the acoustic test process, in order to avoid the influence of external vibration on the acoustic test in the anechoic chamber, the anechoic chamber is built on the basis of a vibration reduction platform, and the influence of the external vibration is isolated through a vibration reducer. Currently, it is more conventional to lay the dampers on the ground, then build a platform on the dampers (e.g., pour a layer of concrete ground), and build the muffling chamber entirely on the platform. Because the shock absorber can not adjust the height, and the volume of the muffling chamber is larger, the weight distribution is uneven, the stress of each shock absorber is uneven, the muffling chamber can not be kept horizontal, the service life of the shock absorber is short, and the shock absorbing effect is weakened.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provide a height-adjustable shock absorber and an anechoic chamber, wherein the height of the shock absorber can be adjusted, and the height or the level of the anechoic chamber can be adjusted by adjusting the height of the shock absorber, so that the shock absorber is stressed uniformly.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a height-adjustable's shock absorber, includes the damping pad, with damping pad swivelling joint's regulation pole and with adjust the protective housing that the pole links to each other, the protective housing for adjust the pole and can reciprocate.
In addition, the invention also provides the following subsidiary technical scheme:
the protective case can accommodate the vibration-damping pad when adjusted to the lowest position.
The section of the protective shell is in a step shape from small to big.
The protective housing is provided with adjust pole threaded connection's cooperation portion.
The adjusting rod is characterized in that an inner hexagonal blind hole is formed in the end portion of the adjusting rod, and an opening exposed out of the inner hexagonal blind hole is formed in the protective shell.
An anechoic chamber comprising the height-adjustable shock absorber as set forth in any one of the above, further comprising a concrete platform disposed at the bottom of the anechoic chamber, the height-adjustable shock absorber being disposed within the concrete platform.
The concrete platform is provided with a through hole communicated with the opening.
Compared with the prior art, the invention has the advantages that: the height of the shock absorber can be adjusted, and the height or the level of the silencing chamber provided with the shock absorber can be adjusted by adjusting the height of the shock absorber, so that the shock absorber is stressed more uniformly, the service life of the shock absorber is prolonged, and the shock absorbing effect is enhanced.
Drawings
FIG. 1 is a schematic view of the construction of the height adjustable shock absorber of the present invention.
Fig. 2 is a schematic structural view of the muffling chamber mounted vibration damper of the present invention.
Detailed Description
The present invention will be described in further non-limiting detail with reference to the following preferred embodiments and accompanying drawings.
As shown in fig. 1, a height adjustable shock absorber includes: damping pad 1, with damping pad 1 swivelling joint's regulation pole 2 and the protective housing 3 that links to each other with adjusting pole 2, damping pad 1's cross sectional shape is preferred trapezoidal, makes it more firm difficult for heeling. One end of the adjusting rod 2 extends into the center of the damping pad 1, a plane bearing 9 is arranged in the damping pad 1 so as to facilitate the relative rotation of the adjusting rod 2 and the damping pad 1, and the bottom of the adjusting rod 2 is matched and connected with the plane bearing 9. The surface of the adjusting rod 2 is provided with external threads. The section of the protective shell 3 is in a step shape from small to big, and the step-shaped section is used for increasing the supporting area when the protective shell is connected with a concrete platform. The top of the protective shell 3 is provided with a cylindrical matching part 6, and the matching part 6 is internally provided with an internal thread matched with the external thread of the adjusting rod 2. Through the rotation regulation pole 2, can change the height of protective housing 3 on adjusting pole 2, when protective housing 3 revolves to minimumly, it can hold damping pad 1 in protective housing 3. The inner hexagonal blind hole 4 is formed in the plane of the top of the adjusting rod 2, people can conveniently use a T-shaped wrench with an inner hexagonal head or other wrenches to move the adjusting rod 2, and the protective shell 3 is provided with an opening 5 communicated with the inner hexagonal blind hole 4, so that the wrench can stretch into the protective shell conveniently.
As shown in fig. 2, the bottom of the anechoic chamber equipped with the above-mentioned vibration damper is a concrete platform 7, which may be a platform made of other materials. A pit 10 for placing the anechoic chamber is formed in the ground, the shock absorber is placed according to the position of the shock absorber planned in advance, the protective shell 3 of the shock absorber is rotated to the lowest position to contain the shock absorbing pad 1, then concrete is poured in the pit, isolation layers (plates or films and the like) need to be arranged on the concrete, the ground and the periphery of the pit to prevent the concrete from being adhered to the pit after being solidified, and circular pipes communicated with the opening 5 need to be arranged to prevent the concrete from blocking the opening 5. After the concrete is solidified, the concrete platform is built, and the through holes 8 are formed in the circular tubes arranged in advance. People twist the inner hexagonal blind hole 4 through the through hole 8 by using a T-shaped wrench, so that the concrete platform rises, the height of the concrete platform is adjusted, and the level can be adjusted as required. On the concrete platform 7, a sound-damping chamber (not shown) can be built, by means of which the height or level of the entire sound-damping chamber can be adjusted.
The height-adjustable shock absorber is in threaded transmission, so that the structure is simple, and the use is convenient and reliable; the section of the protective shell 3 is in a step shape, the contact area with the concrete platform 7 is large, and the bearing capacity is high; the anechoic chamber can be adjusted in height or level, the absorber is stressed more uniformly, the vibration attenuation effect is better, and the service life is longer.
It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (5)
1. A height adjustable shock absorber characterized by: it includes damping pad (1), with damping pad (1) rotatable coupling adjust pole (2) and with adjust protective housing (3) that pole (2) link to each other, protective housing (3) for adjust pole (2) and can reciprocate, be provided with flat bearing (9) in damping pad (1), the bottom of adjusting pole (2) with flat bearing (9) join in marriage mutually and connect, the cross sectional shape of damping pad (1) is trapezoidal, protective housing (3) cross-section is by the echelonment of little grow and is in protective housing (3) can hold when adjusting to the lowest position damping pad (1).
2. The height adjustable shock absorber according to claim 1, wherein: the protective shell (3) is provided with a matching part (6) in threaded connection with the adjusting rod (2).
3. The height adjustable shock absorber according to claim 2, wherein: the adjusting rod (2) is characterized in that an inner hexagonal blind hole (4) is formed in the end portion of the adjusting rod, and an opening (5) exposed out of the inner hexagonal blind hole (4) is formed in the protective shell (3).
4. An anechoic chamber comprising the height adjustable shock absorber of claim 3, wherein: the shock absorber is characterized by further comprising a concrete platform (7) arranged at the bottom of the anechoic chamber, and the height-adjustable shock absorber is arranged in the concrete platform (7).
5. The anechoic chamber of claim 4 wherein: the concrete platform (7) is provided with a through hole (8) communicated with the opening (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710608891.2A CN107237418B (en) | 2017-07-24 | 2017-07-24 | Height-adjustable shock absorber and anechoic chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710608891.2A CN107237418B (en) | 2017-07-24 | 2017-07-24 | Height-adjustable shock absorber and anechoic chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107237418A CN107237418A (en) | 2017-10-10 |
| CN107237418B true CN107237418B (en) | 2023-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710608891.2A Active CN107237418B (en) | 2017-07-24 | 2017-07-24 | Height-adjustable shock absorber and anechoic chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107237418B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2900759C3 (en) * | 1979-01-10 | 1986-05-07 | Marbeton Kies- U. Betonwerk Marstetten Gmbh, 7971 Aitrach | Elevated floor |
| CN101240519B (en) * | 2008-03-13 | 2010-10-27 | 中国船舶重工集团公司第七一一研究所 | Vibration isolator used for orbit traffic floating board |
| WO2012172819A1 (en) * | 2011-06-17 | 2012-12-20 | Sugita Kikuo | Method for preventing overturn of trestle |
| US8820011B1 (en) * | 2013-07-30 | 2014-09-02 | Steven A Parks | Stage floor assembly and method of making the same |
| CN203856953U (en) * | 2014-06-05 | 2014-10-01 | 成都恒宁环保工程有限公司 | Integrated balance weight composite damping table |
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2017
- 2017-07-24 CN CN201710608891.2A patent/CN107237418B/en active Active
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| Publication number | Publication date |
|---|---|
| CN107237418A (en) | 2017-10-10 |
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