Air floatation vibration isolator and air floatation vibration isolation platform

Abstract

The utility model discloses an air floating vibration isolator, and relates to the field of vibration isolation equipment, a shell comprises a floating shell and an annular first limiting piece, and the outer ring of the first limiting piece is fixed and hermetically connected with the inner side wall of the floating shell; the first clamping plate comprises a clamping plate body and at least one second limiting piece, and each second limiting piece is fixedly connected with the first end of the clamping plate body; the second splint is fixedly connected with the second end of the splint body; the elastic diaphragm is clamped between the clamping plate body and the second clamping plate, the outer ring of the elastic diaphragm and the inner ring of the first limiting piece are fixed and connected in a sealed mode, and a first closed cavity is defined by the elastic diaphragm, the first limiting piece and the inner wall of the floating shell; the outer ring of the elastic diaphragm can deform under the action of air pressure in the first closed cavity and drive the first limiting piece to move towards the second limiting pieces, and all the second limiting pieces make contact with the first limiting piece to limit movement of the first limiting piece in the upward floating direction. The utility model further discloses a corresponding air floatation vibration isolation platform. The structure is simple and cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration isolation equipment, in particular to an air floating vibration isolator and an air floating vibration isolation platform. Background Art

[0002] Air floating vibration isolators are widely used in mobile equipment in shipborne and vehicle-mounted environments to achieve a buffering effect. The air floating vibration isolator mainly includes an upper clamping plate, a lower clamping plate, an elastic diaphragm and an air chamber module. The upper clamping plate, the lower clamping plate and the elastic diaphragm are all arranged in the air chamber module. An elastic diaphragm is arranged between the upper clamping plate and the lower clamping plate. When gas is filled into the air chamber module, the elastic diaphragm can drive the upper clamping plate to move upward. However, when too much gas is filled, exceeding the bearing capacity of the elastic diaphragm, the elastic diaphragm will be damaged, and further damage to the air floating vibration isolator and the air floating vibration isolation platform will be caused.

[0003] For existing air floating vibration isolators, a height detection device is mostly set to detect the floating height of the air floating vibration isolator. For example, a horizontal height regulating valve is set to detect the rising height of the upper clamping plate and adjust the height of the upper clamping plate. When it is detected that the height of the upper clamping plate is lower than the set height, gas is filled into the air chamber module to lift the air floating vibration isolator; when it is detected that the height of the upper clamping plate reaches the set height, the inflation is stopped to protect the elastic diaphragm. This kind of air floating vibration isolator needs to add a horizontal height regulating valve, and the structure is relatively complex and the cost is relatively high. Content of the Utility Model

[0004] The purpose of the utility model is to provide an air floating vibration isolator and an air floating vibration isolation platform to solve the problems existing in the prior art, which can realize a self-limiting function, has a simple structure and is beneficial to reducing costs.

[0005] To achieve the above purpose, the utility model provides the following scheme:

[0006] The utility model provides an air floating vibration isolator, including:

[0007] A housing, the housing includes a floating housing and an annular first limiting member. One end of the floating housing has an opening, and the outer ring of the first limiting member is fixedly and sealingly connected to the inner side wall of the floating housing;

[0008] A first clamping plate, the first clamping plate includes a clamping plate body and at least one second limiting member, and each second limiting member is fixedly connected to the first end of the clamping plate body;

[0009] A second clamping plate, the first end of the second clamping plate is fixedly connected to the second end of the clamping plate body, and the second end of the second clamping plate can pass through the opening of the floating housing and contact an external component;

[0010] An elastic diaphragm, which is clamped between the splint body and the second splint. The outer ring of the elastic diaphragm is arranged on the outer sides of the splint body and the second splint, and the outer ring of the elastic diaphragm can be fixedly and sealingly connected to the inner ring of the first limiting member. The elastic diaphragm, the first limiting member and the inner wall of the floating shell can enclose a first closed cavity. The outer ring of the elastic diaphragm can be deformed under the action of the air pressure in the first closed cavity and drive the first limiting member to move towards the second limiting member. Each of the second limiting members can limit the movement of the first limiting member in the upward floating direction by contacting the first limiting member, and the upward floating direction is the direction from the first limiting member to the second limiting member.

[0011] Preferably, each of the second limiting members is fixedly connected to the outer side wall of the splint body. The inner ring of the first limiting member is the first working end, and the end of each of the second limiting members away from the splint body is the second working end. Each of the first working ends is arranged on the side close to the second splint of the corresponding second working end, and the side of each of the first working ends away from the second splint can contact the side of the corresponding second working end close to the second splint.

[0012] Preferably, the elastic diaphragm includes a top wall, a side wall, an arc wall and an extension wall. The side wall is in a cylindrical shape, both the arc wall and the extension wall are in a ring shape, the cross section of the arc wall is in an arc shape, the entire outer edge of the top wall is sealingly connected to the entire outer edge of the first end of the side wall, the entire outer edge of the second end of the side wall is sealingly connected to the annular outer edge of the inner ring of the arc wall, the annular outer edge of the outer ring of the arc wall is sealingly connected to the entire inner edge of the extension wall. The top wall is clamped between the splint body and the second splint. One end of the side wall close to the arc wall extends towards the side away from the first splint, the middle of the arc wall extends towards the side away from the extension wall and the top wall, the outer edge of the extension wall extends towards the direction close to the inner side wall of the floating shell, and the extension wall is fixedly and sealingly connected to the first limiting member.

[0013] Preferably, it further includes an annular connecting plate. The connecting plate can be fixedly connected to the side of the first limiting member away from the second limiting member, and the connecting plate and the first limiting member can clamp the extension wall.

[0014] Preferably, there is one second limiting member. The second limiting member is in a ring shape, and the inner edge of the second limiting member is fixedly connected to the splint body.

[0015] The present utility model further provides an air floating vibration isolation platform, which includes a vibration isolation table and at least one of the air floating vibration isolators. The vibration isolation table can contact the end of the housing away from the opening of the housing.

[0016] Preferably, the vibration isolation table includes a platform body and vibration isolation side walls. The vibration isolation side walls are fixedly connected to the platform body and form an installation cavity, and each of the air-floating vibration isolators is disposed in the installation cavity.

[0017] Preferably, there are a plurality of the air-floating vibration isolators, and the plurality of air-floating vibration isolators are evenly distributed in the installation cavity.

[0018] The utility model has achieved the following technical effects compared with the prior art:

[0019] The utility model provides an air-floating vibration isolator and an air-floating vibration isolation platform. The housing includes a floating shell and an annular first limiting member. The outer ring of the first limiting member is fixedly and sealingly connected to the inner side wall of the floating shell; the first clamping plate includes a clamping plate body and at least one second limiting member, and each second limiting member is fixedly connected to the first end of the clamping plate body; the first end of the second clamping plate is fixedly connected to the second end of the clamping plate body; an elastic diaphragm is clamped between the clamping plate body and the second clamping plate, the outer ring of the elastic diaphragm is disposed outside the clamping plate body and the second clamping plate, and the outer ring of the elastic diaphragm can be fixedly and sealingly connected to the inner ring of the first limiting member. The elastic diaphragm, the first limiting member and the inner wall of the floating shell can enclose a first closed cavity. The outer ring of the elastic diaphragm can be deformed under the action of the air pressure in the first closed cavity and drive the first limiting member to move towards the second limiting member. Each second limiting member can limit the movement of the first limiting member along the upward floating direction by contacting the first limiting member, and the upward floating direction is the direction from the first limiting member to the second limiting member.

[0020] The outer edge of the elastic diaphragm can drive the first limiting member to move upward under the action of air pressure. The first limiting member drives the floating shell to move upward, and the floating shell is used to drive the vibration isolation table of the air-floating vibration isolation platform to move upward, so as to realize the air-floating vibration isolation function. When the first limiting member moves upward to contact the corresponding second limiting member, since the second limiting member is fixedly connected to the first clamping plate, the second clamping plate and external components in sequence, the second limiting member can limit the movement of the first limiting member along the upward floating direction, and further limit the movement of the floating shell along the upward floating direction, realizing the self-limiting function, preventing the elastic diaphragm from being deformed excessively beyond its bearing capacity, and further preventing the air-floating vibration isolator from being damaged due to excessive inflation. There is no need to additionally set a height detection device to detect the height of the first clamping plate, and the structure is simple, which is beneficial to reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 Structural schematic of the air-floating vibration isolation platform provided for Embodiment 2 Figure 1 ;

[0023] Figure 2 For Figure 2 The sectional view taken along A-A in

[0024] Figure 3 The front view of the air-floating vibration isolation platform provided for Embodiment 2

[0025] Figure 4 The top view of the air-floating vibration isolation platform provided for Embodiment 2

[0026] Figure 5 Structural schematic of the air-floating vibration isolation platform provided for Embodiment 2 Figure 2 ;

[0027] In the figure: 100, air-floating vibration isolator; 200, air-floating vibration isolation platform; 1, floating shell; 101, opening; 102, extended top wall; 103, extended side wall; 104, extended bottom wall; 105, vertical notch; 106, first edge; 107, second edge; 2, first limiting member; 201, first working end; 3, clamping plate body; 4, second limiting member; 401, second working end; 5, second clamping plate; 6, elastic diaphragm; 601, top wall; 602, side wall; 603, arc wall; 604, extended wall; 7, connecting plate; 8, vibration isolation table; 801, platform body; 802, vibration isolation side wall; 803, installation cavity; 9, first closed cavity; 10, second closed cavity; 11, air inlet. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] The purpose of the present invention is to provide an air-floating vibration isolator and an air-floating vibration isolation platform to solve the problems existing in the prior art, which can realize the self-limiting function, has a simple structure, and is beneficial to cost reduction.

[0030] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0031] Embodiment 1

[0032] Such as Figure 1and Figure 2 As shown in Figure 2 , this embodiment provides a pneumatic vibration isolator 100, which includes: a housing, the housing includes a floating shell 1 and an annular first limiting member 2. One end of the floating shell 1 has an opening 101. The outer ring of the first limiting member 2 is fixedly and sealingly connected to the inner side wall of the floating shell 1; a first clamping plate, the first clamping plate includes a clamping plate body 3 and at least one second limiting member 4, and each second limiting member 4 is fixedly connected to the first end of the clamping plate body 3; a second clamping plate 5, the first end of the second clamping plate 5 is fixedly connected to the second end of the clamping plate body 3, and the second end of the second clamping plate 5 can pass through the opening 101 of the floating shell 1 and contact an external component; an elastic diaphragm 6, the elastic diaphragm 6 is clamped between the clamping plate body 3 and the second clamping plate 5. The outer ring of the elastic diaphragm 6 is arranged outside the clamping plate body 3 and the second clamping plate 5, and the outer ring of the elastic diaphragm 6 can be fixedly and sealingly connected to the inner ring of the first limiting member 2. The elastic diaphragm 6, the first limiting member 2 and the inner wall of the floating shell 1 can enclose a first closed cavity 9. The outer ring of the elastic diaphragm 6 can deform under the action of the air pressure in the first closed cavity 9 and drive the first limiting member 2 to move towards the second limiting member 4. Each second limiting member 4 can limit the movement of the first limiting member 2 in the upward floating direction by contacting the first limiting member 2. The upward floating direction is the direction from the first limiting member 2 to the second limiting member 4.

[0033] The elastic diaphragm 6, the first limiting member 2 and the inner side wall of the floating shell 1 are fixedly and sealingly connected in sequence. Therefore, the elastic diaphragm 6, the first limiting member 2 and the inner wall of the floating shell 1 can enclose a first closed cavity 9. When the air pressure in the first closed cavity 9 increases, the outer ring of the elastic diaphragm 6 can drive the first limiting member 2 to move upward under the action of the air pressure. The first limiting member 2 drives the floating shell 1 to move upward, and the floating shell 1 is used to drive the vibration isolation table 8 of the pneumatic vibration isolation platform 200 to move upward, so as to achieve the pneumatic vibration isolation effect. When the first limiting member 2 moves upward to contact the corresponding second limiting member 4, since the second limiting member 4 is fixedly connected to the first clamping plate and the second clamping plate 5 in sequence, the second limiting member 4 can limit the movement of the first limiting member 2 in the upward floating direction, and further limit the movement of the floating shell 1 in the upward floating direction, realizing the self-limiting function, preventing the elastic diaphragm 6 from exceeding its bearing capacity due to excessive deformation, and further preventing the pneumatic vibration isolator 100 from being damaged due to excessive inflation. There is no need to additionally set a height detection device to detect the height of the first clamping plate, the structure is simple, and it is beneficial to reduce costs.

[0034] In this embodiment, each second limiting member 4 is fixedly connected to the outer side wall of the clamping plate body 3. The inner ring of the first limiting member 2 is the first working end 201. One end of each second limiting member 4 away from the clamping plate body 3 is the second working end 401. Each first working end 201 is arranged on the side close to the second clamping plate 5 of the corresponding second working end 401. The side of each first working end 201 away from the second clamping plate 5 can contact the side of the corresponding second working end 401 close to the second clamping plate 5. The first working end 201 is arranged directly below the second working end 401. When the first working end 201 moves upward to contact the second working end 401, the second working end 401 can prevent the first working end 201 from moving in the floating-up direction and prevent the air floating vibration isolator 100 from being damaged.

[0035] In this embodiment, the elastic diaphragm 6 includes a top wall 601, a side wall 602, an arc wall 603 and an extension wall 604. The side wall 602 is in a cylindrical shape. Both the arc wall 603 and the extension wall 604 are in a ring shape. The cross-section of the arc wall 603 is arc-shaped. The entire outer edge of the top wall 601 is sealingly connected to the entire outer edge of the first end of the side wall 602, preferably integrally formed, and forms a bowl-shaped structure. The entire outer edge of the second end of the side wall 602 is sealingly connected to the annular outer edge of the inner ring of the arc wall 603, preferably integrally formed. The annular outer edge of the outer ring of the arc wall 603 is sealingly connected to the entire inner side edge of the extension wall 604. The top wall 601 is clamped between the clamping plate body 3 and the second clamping plate 5. One end of the side wall 602 close to the arc wall 603 extends away from the first clamping plate. The middle of the arc wall 603 extends away from the extension wall 604 and the top wall 601 to form a concave structure. The outer edge of the extension wall 604 extends towards the inner side wall of the floating shell 1. The extension wall 604 is fixedly and sealingly connected to the first limiting member 2. The elastic diaphragm 6 forms a convolution film form. An annular groove with a concave stroke is formed at the arc wall 603 of the elastic diaphragm 6. Under the action of air pressure, the air pressure on the upper surface of the arc wall 603 is less than the air pressure at the top wall inside the floating shell 1, so that the arc wall 603 deforms, that is, the outer ring of the arc wall 603 moves upward, thereby driving the first limiting member 2 to move upward.

[0036] In this embodiment, it further includes an annular connecting plate 7. The connecting plate 7 can be fixedly connected to the side of the first limiting member 2 away from the second limiting member 4, and the connecting plate 7 and the first limiting member 2 can clamp the extension wall 604 to realize the fixed and sealing connection between the extension wall 604 and the first limiting member 2. As a preferred implementation manner, the connecting plate 7, the extension wall 604 and the first limiting member 2 are sequentially penetrated by bolts or screws to realize the fixed connection of the three, and the connecting plate 7 and the first limiting member 2 clamp the extension wall 604.

[0037] In this embodiment, there is one second limiting member 4, the second limiting member 4 is annular, and the inner edge of the second limiting member 4 is fixedly connected to the clamping plate body 3. As a preferred implementation, the second limiting member 4 and the clamping plate body 3 are integrally formed.

[0038] As a preferred implementation, an extension shell is provided outside the floating shell 1. The extension shell includes an extension top wall 102, an extension side wall 103, and an extension bottom wall 104. Taking the Figure 2 shown perspective as an example for description, the extension side wall 103 has a vertical notch 105, and the floating shell 1 is disposed at the vertical notch 105 of the extension side wall 103; the extension top wall 102 is fixedly connected to the top wall of the floating shell 1, preferably integrally formed, and the upper surfaces of both form a support surface together; the extension top wall 102 is fixedly and sealingly connected to the extension side wall 103, and the extension bottom wall 104 is fixedly and sealingly connected to the extension side wall 103; a first edge 106 and a second edge 107 are formed at the vertical notch 105 of the extension side wall 103, and both the first edge 106 and the second edge 107 are sealingly and fixedly connected to the outer side wall of the floating shell 1; a second closed cavity 10 can be formed between the extension top wall 102, the extension side wall 103, the extension bottom wall 104, and the outer side wall of the floating shell 1. Air inlets 11 are provided on both the extension side wall 103 and the side wall of the floating shell 1, and the air inlets 11 of the extension shell are used to connect to an inflation device or pipeline to realize inflation of the first closed cavity 9.

[0039] Embodiment 2

[0040] As Figures 1 to 5 shown, this embodiment provides an air floating vibration isolation platform 200, which includes a vibration isolation table 8 and at least one air floating vibration isolator 100 in Embodiment 1. The vibration isolation table 8 can contact the end of the housing away from the opening 101 of the housing. The floating shell 1 is used to drive the vibration isolation table 8 of the air floating vibration isolation platform 200 to move upward, so as to realize the air floating vibration isolation effect.

[0041] In this embodiment, the vibration isolation table 8 includes a platform body 801 and a vibration isolation side wall 802. The vibration isolation side wall 802 is fixedly connected to the platform body 801. The vibration isolation side wall 802 and the platform body 801 form an installation cavity 803. The air floating vibration isolator 100 is disposed in the installation cavity 803, and in the initial state, the bottom of the second clamping plate can contact an external component. The vibration isolation side wall 802 can shield the internal structure to a certain extent and increase the overall aesthetics.

[0042] The external component is the position where the air floating vibration isolation platform 200 is placed during operation, such as the ground, etc.

[0043] In this embodiment, there are multiple air-floating vibration isolators 100, and the multiple air-floating vibration isolators 100 are evenly distributed in the installation cavity 803. As a preferred implementation manner, an air source interface, such as a valve nozzle, is provided on the vibration isolation table 8. The air source interface is connected to the air inlet 11 of the air-floating vibration isolator 100 through a pipeline. By inflating the multiple air-floating vibration isolators 100 through the air source interface, the floating shells 1 of the multiple air-floating vibration isolators 100 all move upward, jointly driving the platform body 801 to move upward to ensure the stability of the movement of the platform body 801. The air-floating vibration isolator 100 is preferably four.

[0044] In the present utility model, specific examples are used to expound the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. An air-floating vibration isolator, characterized in that: Comprising: A housing, the housing includes a floating housing and an annular first limiting member, one end of the floating housing has an opening, and the outer ring of the first limiting member is fixedly and sealingly connected to the inner side wall of the floating housing; A first clamping plate, the first clamping plate includes a clamping plate body and at least one second limiting member, and each of the second limiting members is fixedly connected to the first end of the clamping plate body; A second clamping plate, the first end of the second clamping plate is fixedly connected to the second end of the clamping plate body, and the second end of the second clamping plate can pass through the opening of the floating housing and contact an external component; An elastic diaphragm, the elastic diaphragm is clamped between the clamping plate body and the second clamping plate, the outer ring of the elastic diaphragm is arranged outside the clamping plate body and the second clamping plate, and the outer ring of the elastic diaphragm can be fixedly and sealingly connected to the inner ring of the first limiting member. The elastic diaphragm, the first limiting member and the inner wall of the floating housing can enclose a first closed cavity. The outer ring of the elastic diaphragm can deform under the action of the air pressure in the first closed cavity and drive the first limiting member to move towards the second limiting member. Each of the second limiting members can limit the movement of the first limiting member in the upward floating direction by contacting the first limiting member. The upward floating direction is the direction from the first limiting member to the second limiting member.

2. The air-floating vibration isolator according to claim 1, wherein: Each of the second limiting members is fixedly connected to the outer side wall of the clamping plate body. The inner ring of the first limiting member is the first working end, and the end of each of the second limiting members away from the clamping plate body is the second working end. Each of the first working ends is arranged on the side close to the second clamping plate of the corresponding second working end, and the side of each of the first working ends away from the second clamping plate can contact the side of the corresponding second working end close to the second clamping plate.

3. The air-floating vibration isolator according to claim 1, characterized in that: The elastic diaphragm includes a top wall, a side wall, an arc wall and an extension wall. The side wall is cylindrical, and both the arc wall and the extension wall are annular. The cross-section of the arc wall is arc-shaped. The entire outer edge of the top wall is sealingly connected to the entire outer edge of the first end of the side wall. The entire outer edge of the second end of the side wall is sealingly connected to the annular outer edge of the inner ring of the arc wall. The annular outer edge of the outer ring of the arc wall is sealingly connected to the entire inner edge of the extension wall. The top wall is clamped between the clamping plate body and the second clamping plate. One end of the side wall close to the arc wall extends away from the first clamping plate. The middle of the arc wall extends away from the extension wall and the top wall. The outer edge of the extension wall extends towards the inner side wall of the floating housing, and the extension wall is fixedly and sealingly connected to the first limiting member.

4. The air-floating vibration isolator according to claim 3, characterized in that: It further includes an annular connecting plate, the connecting plate can be fixedly connected to the side of the first limiting member away from the second limiting member, and the connecting plate and the first limiting member can clamp the extension wall.

5. The air-floating vibration isolator according to claim 1, wherein: There is one second limiting member, the second limiting member is annular, and the inner edge of the second limiting member is fixedly connected to the clamping plate body.

6. An air-floating vibration isolation platform, characterized in that: It includes a vibration isolation table and at least one air-bearing vibration isolator as described in any one of claims 1-5, and the vibration isolation table can contact one end of the housing away from the opening of the housing.

7. The air-floating vibration isolation platform according to claim 6, wherein: The vibration isolation table includes a platform body and vibration isolation side walls, the vibration isolation side walls are fixedly connected to the platform body and form an installation cavity, and each of the air-bearing vibration isolators is arranged in the installation cavity.

8. The air-floating vibration isolation platform according to claim 7, characterized in that: There are a plurality of the air-bearing vibration isolators, and the plurality of air-bearing vibration isolators are evenly distributed in the installation cavity.

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