CN108626300B

CN108626300B - Variable-volume vibration-proof device and vibration-proof platform thereof

Info

Publication number: CN108626300B
Application number: CN201810364888.5A
Authority: CN
Inventors: 宾伟雄
Original assignee: Shenzhen Try Precision Technology Co ltd
Current assignee: Shenzhen Try Precision Technology Co ltd
Priority date: 2018-04-23
Filing date: 2018-04-23
Publication date: 2021-03-05
Anticipated expiration: 2038-04-23
Also published as: CN108626300A

Abstract

The invention discloses a variable-volume vibration-proof device, comprising: the shell is of a cylindrical structure with a hollow cavity inside, and comprises an upper surface and a lower surface opposite to the upper surface; the air cylinder is positioned in the hollow cavity of the shell and comprises an upper cavity capable of storing air and a lower cavity capable of storing air; the upper cavity is communicated with an external air source hole, and the upper cavity is communicated with the lower cavity through a precise damping air hole; and the rubber air bag is arranged on the lower surface of the shell, a limiting cushion block is arranged above the rubber air bag, a supporting leg is arranged below the rubber air bag, the rubber air bag is connected with the air cylinder in a sealing manner, and the limiting cushion block, the supporting leg and the rubber air bag are connected in a sealing manner. The invention also provides an anti-vibration platform with the anti-vibration device with the variable volume. The volume-variable vibration isolation device and the vibration isolation platform thereof have excellent vibration isolation performance and are suitable for wide-range heavy loads.

Description

Variable-volume vibration-proof device and vibration-proof platform thereof

Technical Field

The invention belongs to the technical field of vibration reduction platform systems, and particularly relates to a variable-volume vibration-proof device and a vibration-proof platform thereof.

Background

At present, the biggest problem for devices such as precision measuring instruments and the like is interference caused by external vibration, for example, measurement use of a push-pull force instrument, weighing of fluorescent powder and the like, and observation under a microscope shows that the instruments are subjected to vibration transmitted from the outside and are shaken. This has a great influence on the test and the measurement, which results in the confusion of the test result and the loss of accuracy and reliability, so these instruments and equipments have high requirements on the use environment and cannot be in the strong vibration environment, and the factory production line is often the place where the strong seismic source is generated.

Therefore, a platform capable of effectively solving the problem of the lack of the vibration-proof performance of equipment such as a precision metering instrument is urgently needed under the existing condition.

Disclosure of Invention

In order to solve the technical problems, the invention provides a variable-volume anti-vibration device and an anti-vibration platform thereof, which can solve the problems.

The variable volume vibration damping device includes: the shell is of a cylindrical structure with a hollow cavity inside, and comprises an upper surface and a lower surface opposite to the upper surface; the air cylinder is positioned in the hollow cavity of the shell and comprises an upper cavity capable of storing air and a lower cavity capable of storing air; the upper cavity is communicated with an external air source hole, and the upper cavity is communicated with the lower cavity through a precise damping air hole; and the rubber air bag is arranged on the lower surface of the shell, a limiting cushion block is arranged above the rubber air bag, a supporting leg is arranged below the rubber air bag, the rubber air bag is connected with the air cylinder in a sealing manner, and the limiting cushion block, the supporting leg and the rubber air bag are connected in a sealing manner.

In one embodiment, the upper cavity is fixed on the upper surface of the shell through a sealing rubber piece, and a rubber piece fixing piece is arranged between the sealing rubber piece and the shell.

In one embodiment, the sealing rubber piece and the rubber piece fixing piece penetrate through the edge of the sealing rubber piece and the corresponding position of the shell through a first bolt so as to fix the sealing rubber piece and the rubber piece fixing piece on the shell.

In one embodiment, the sealing rubber member is an annular sealing rubber ring, and the rubber member fixing member is an annular metal fixing ring.

In one embodiment, the edge of the rubber air bag is fixed to the lower surface of the housing by a second bolt and an air bag fixing member.

In one embodiment, the balloon retainer is a metal retainer ring in the form of a ring.

In one embodiment, the variable volume vibration damping device further comprises a module protection bracket including a plate-shaped body and two end portions extending along the edge of the body in a bent manner.

In one embodiment, the plate-shaped body of the module protection bracket is arranged below the supporting legs, and two end portions of the module protection bracket are connected to the lower surface of the shell.

In one embodiment, a buffer rubber pad is further arranged between the supporting leg and the module protection bracket.

The present invention also provides a vibration-proof platform, comprising: the variable volume vibration isolator of any preceding claim, mounted to the bottom of the anti-vibration platform.

The invention has at least the following advantages:

the volume-variable anti-vibration device and the volume-variable anti-vibration platform provided by the invention are provided with the rubber air bags, when the rubber air bags are subjected to external vibration pressure, the volume of the gas output by the air cylinder can be changed to float back and forth through the expansion of the materials of the rubber air bags until the external vibration is slowly reduced, and the volume-variable anti-vibration device and the volume-variable anti-vibration platform have excellent anti-vibration performance and are suitable for wide-range heavy-load loads.

Drawings

Fig. 1 is a perspective view of a variable volume vibration damping device according to an embodiment of the present invention; and

fig. 2 is a sectional view of a variable volume vibration damping device according to an embodiment of the present invention.

Reference numbers in the figures: the variable-volume vibration isolator comprises a variable-volume vibration isolator 100, a shell 10, an upper surface 11, a lower surface 12, a rubber air bag 13, a limit cushion block 14, supporting legs 15, screws 16, second bolts 17, an air bag fixing part 18, an air cylinder 20, an upper cavity 21, a lower cavity 22, an air source hole 23, a precise damping air hole 24, a sealing rubber part 25, a rubber part fixing part 26, a first bolt 27, a module protection bracket 30, a plate-shaped body 31, two end parts 32, a through hole 33 and a buffer rubber pad 40.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Fig. 1 and 2 show a variable-volume antivibration device 100 according to the present invention. Referring to fig. 1 and 2 together, the variable volume vibration damping device 100 includes a housing 10 and a cylinder 20 accommodated in the housing 10. The housing 10 is a cylindrical structure with a hollow cavity inside, and the housing 10 includes an upper surface 11 and a lower surface 12 opposite to the upper surface 11. The cylinder 20 is located within the hollow cavity of the housing 11.

The cylinder 20 includes an upper gas-storable cavity 21 and a lower gas-storable cavity 22. The upper cavity 21 is communicated with an external air source hole 23, and the upper cavity 21 is communicated with the lower cavity 22 through a precise damping air hole 24. By the design, the upper cavity 21 inputs an air source through the external air source hole 23, the air is exhausted into the lower cavity 22 through the precise damping air hole 24, and the vibration is avoided through compressed air.

The upper chamber 21 is fixed to the upper surface 11 of the housing 10 by a sealing rubber member 25. Further, a rubber member fixing member 26 is disposed between the sealing rubber member 25 and the housing 10, and the rubber member fixing member 26 is used for fixing and pressing the sealing rubber member 25, so as to achieve better sealing connection. Further, the sealing rubber 25 and the rubber fixing member 26 are inserted through the edge thereof and the corresponding position of the housing 10 by a first bolt 27 to fix the sealing rubber 25 and the rubber fixing member 26 to the housing 10.

Preferably, for better sealing connection, the sealing rubber 25 is an annular sealing rubber ring, and the rubber fixing member 26 is an annular metal fixing ring.

A rubber bladder 13 is provided on the lower surface 12 of the housing 10. A limiting cushion block 14 is arranged above the rubber air bag 13, and supporting legs 15 are arranged below the rubber air bag 13. The limiting cushion block 14, the rubber air bag 13 and the supporting leg 15 are fixed and hermetically connected through a screw 16. The limiting cushion block 14 is used for preventing the rubber air bag 13 from being burst when being overloaded. The edge of the rubber bladder 13 is fixed to the lower surface 12 of the housing 10 by the second bolt 17 and the bladder fixing member 18 while achieving a sealing connection.

Preferably, for better sealing connection, the airbag fixing member 18 is a ring-shaped metal fixing ring.

Further, the variable-volume antivibration device 100 further includes a module protection bracket 30. The module protection bracket 30 serves to prevent the rubber bladder 13 from being directly acted upon by the weight of an object when the air pressure is lost by the rubber bladder 13. The module protection bracket 30 includes a plate-shaped body 31, both end portions 32 bent and extended along the edge of the plate-shaped body 31, and a through-hole 33 formed through the center of the plate-shaped body 31. The plate-shaped body 31 of the module protection bracket 30 is disposed below the supporting legs 15, and two end portions 32 of the module protection bracket 30 are connected to the lower surface 12 of the housing 10, so as to better perform the supporting and protecting functions. Further, in order to further enhance the above effect, a buffering rubber pad 40 is further disposed between the supporting leg 15 and the module protection bracket 30, and a portion of the buffering rubber pad 40 is accommodated in the through hole 33.

The connection between the rubber air bag 13 and the air cylinder 20 belongs to sealing connection, the connection between the limiting cushion block 14, the supporting leg 15 and the rubber air bag 13 is also sealing connection (all the sealing connections ensure good air tightness), and the rubber air bag 13 generates upward and downward actions when the air cylinder 20 is inflated or closed. With such a design, when the rubber air bag 13 is subjected to the external vibration pressure, the rubber air bag changes the volume of the output gas of the air cylinder 20 to float back and forth through the expansion of the material of the rubber air bag until the external vibration is slowly reduced.

Preferably, the variable volume antivibration device 100 is installed at the bottom of the antivibration platform to form a vibration absorbing system.

The invention has at least the following advantages:

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A variable-volume vibration damping device, comprising:

the shell is of a cylindrical structure with a hollow cavity inside, and comprises an upper surface and a lower surface opposite to the upper surface;

the air cylinder is positioned in the hollow cavity of the shell and comprises an upper cavity capable of storing air and a lower cavity capable of storing air; the upper cavity is communicated with an external air source hole, and the upper cavity is communicated with the lower cavity through a precise damping air hole; and

the rubber air bag is arranged on the lower surface of the shell, a limiting cushion block is arranged above the rubber air bag, supporting legs are arranged below the rubber air bag, the rubber air bag is connected with the air cylinder in a sealing mode, and the limiting cushion block and the supporting legs are connected with the rubber air bag in a sealing mode;

the module protection bracket comprises a plate-shaped body, two end parts extending along the edge of the body in a bending way and a through hole formed by penetrating through the plate-shaped body; the plate-shaped body of the module protection bracket is arranged below the supporting legs, and two end parts of the module protection bracket are connected to the lower surface of the shell; and a buffer rubber mat is also arranged between the supporting leg and the module protection bracket, and part of the buffer rubber mat is accommodated in the through hole.

2. A variable-volume vibration isolator as claimed in claim 1, wherein said upper chamber is fixed to an upper surface of said housing by a sealing rubber member, and a rubber member fixing member is provided between said sealing rubber member and said housing.

3. A variable-volume vibration isolator as claimed in claim 2, wherein said sealing rubber and rubber fixing member is penetrated through the edge thereof and the corresponding position of said housing by a first bolt to fix said sealing rubber and rubber on said housing.

4. A variable-volume vibration isolator as claimed in claim 2, wherein said sealing rubber member is an annular sealing rubber ring, and said rubber member fixing member is an annular metal fixing ring.

5. The variable volume vibration damping device according to claim 1, wherein an edge of said rubber bladder is fixed to a lower surface of said casing by a second bolt and a bladder fixing member.

6. The variable volume vibration isolator as claimed in claim 5, wherein said airbag fixing member is a ring-shaped metal fixing ring.

7. An anti-vibration platform, comprising: a variable volume vibration isolator as claimed in any one of claims 1 to 6, mounted on the bottom of the vibration isolation platform.