High-rigidity vibration isolation platform structure

Abstract

The utility model relates to the technical field of vibration reduction equipment manufacturing, and discloses a high-rigidity vibration isolation platform structure which comprises a first static platform, the first static platform is connected with a first movable platform through a first isolation pad, the first movable platform is provided with a plurality of supporting columns, the supporting columns are distributed in a circumferential array mode, and the first static platform is connected with a second static platform through a second isolation pad. The supporting column is connected with a second static platform, the second static platform is connected with a second movable platform through a second isolation pad, an annular ring is installed in the second movable platform, a piston is placed on the annular ring, an elastic strip is arranged on the piston, and a variable-diameter throttler is installed on the second movable platform. The static platform is connected with the movable platform through the isolation pads, the movable platform and the static platform are provided with the multiple bolt isolation pads, the static platform, the isolation pads and the movable platform are connected in a three-layer structure, and the vibration isolation effect of the vibration isolation platform is improved while rigid connection and elastic connection are considered.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration reduction equipment manufacturing, in particular to a high-rigidity vibration isolation platform structure. Background Art

[0002] The vibration isolation platform is a device used to isolate vibration. Its main function is to isolate vibration, isolate the vibration source from the equipment or object that needs vibration isolation, and reduce or eliminate the impact of vibration on the equipment or object. Its application can effectively reduce the vibration impact on the equipment or object, prevent the vibration of the equipment or object itself from being transmitted to the surrounding environment, thereby ensuring the normal operation of the equipment or object and extending its service life.

[0003] Existing high-rigidity vibration isolation platform structures often use vibration isolators in combination with vibration isolation platforms, which can usually only effectively attenuate a single vertical vibration or a single horizontal vibration of a device or object. If both vertical and horizontal vibrations are to be isolated, different types of vibration isolators need to be combined, which not only increases the cost of the vibration isolation platform, but also increases the structural complexity of the vibration isolation platform. At the same time, the vibration isolation effect of the existing vibration isolation platform is poor.

[0004] To this end, we designed a high-rigidity vibration isolation platform structure. Summary of the invention

[0005] The utility model aims to solve the problem that the vibration isolation platform in the prior art cannot isolate the vibration in the vertical and horizontal directions at the same time and the vibration isolation effect is poor, and proposes a high-rigidity vibration isolation platform structure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A high-rigidity vibration isolation platform structure includes a first static platform, which is connected to a first dynamic platform via a first isolation pad, a plurality of support columns are arranged on the first dynamic platform, the support columns are distributed in a circular array, the support columns are connected to a second static platform, the second static platform is connected to a second dynamic platform via a second isolation pad, an annular ring is installed in the second dynamic platform, a piston is placed on the annular ring, an elastic strip is arranged on the piston, and a variable diameter throttle is installed on the second dynamic platform.

[0008] Preferably, a plurality of first bolt isolation pads are provided on the first moving platform, and a plurality of second bolt isolation pads are provided on the second stationary platform, and the first bolt isolation pads and the second bolt isolation pads both include bolts and isolation pads.

[0009] Preferably, the first bolt isolation pad and the second bolt isolation pad are located between the first moving platform and the second static platform, and the first moving platform and the second static platform maintain a parallel position relationship.

[0010] Preferably, a plurality of foot pads are fixed to the bottom end of the first static platform, a plurality of circular holes are opened on the second moving platform, and the inner wall of the second moving platform is kept in contact with the elastic strip.

[0011] Preferably, a plurality of first holes are formed on the annular convex portion of the annular ring, a second hole is formed in the central recessed portion of the annular ring, and the variable diameter throttle is located in the second hole.

[0012] Preferably, the annular ring cooperates with the second moving platform to form an upper chamber, the second moving platform cooperates with the second isolation pad to form a lower chamber, and the variable diameter throttle includes a cylindrical cavity opened inside.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model adopts a static platform connected to a dynamic platform through an isolation pad. A plurality of bolt isolation pads are arranged on the dynamic platform and the static platform. The static platform, the isolation pad and the dynamic platform are connected by a three-layer structure, which improves the vibration isolation effect of the vibration isolation platform while taking into account both rigid connection and elastic connection.

[0015] 2. The utility model adopts an elastic strip provided on the piston, and a variable diameter throttle is installed on the second moving platform. The elastic strip is deformed by vibration to form a pressure difference between the upper chamber and the lower chamber. The gas flows back and forth in the two chambers and generates a damping force, thereby isolating the vibration in the vertical and horizontal directions.

[0016] In summary, the utility model is reasonably designed and can not only improve the vibration isolation effect of the vibration isolation platform, but also isolate vibrations in the vertical and horizontal directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a top view of the overall structure of a high-rigidity vibration isolation platform structure proposed by the utility model;

[0018] Figure 2 This is a bottom view of the overall structure of a high-rigidity vibration isolation platform structure proposed by the utility model;

[0019] Figure 3 This is a cross-sectional view of the overall structure of a high-rigidity vibration isolation platform structure proposed by the utility model;

[0020] Figure 4 This is a cutaway diagram of the overall structure of a high-rigidity vibration isolation platform structure proposed by the utility model.

[0021] In the figure: 1. first static platform; 2. first isolation pad; 3. first moving platform; 4. first bolt isolation pad; 5. support column; 6. second static platform; 7. second bolt isolation pad; 8. second isolation pad; 9. second moving platform; 10. annular ring; 11. piston; 12. elastic strip; 13. variable diameter throttle. DETAILED DESCRIPTION

[0022] Reference Figure 1-Figure 4 A high-rigidity vibration isolation platform structure includes a first static platform 1, which is connected to a first dynamic platform 3 through a first isolation pad 2. The first static platform 1 is the base of the vibration isolation device, which is used for external installation and provides an installation interface. A plurality of foot pads are fixed to the bottom end of the first static platform 1, and the plurality of foot pads are used to facilitate the transportation of the vibration isolation device. The first static platform 1 is a weight-reducing structure, and the first isolation pad 2 is made of foam rubber material.

[0023] The second static platform 6 is connected to the second moving platform 9 through the second isolation pad 8. The second moving platform 9 is a mounting platform for the vibration isolation device. The second moving platform 9 is a weight-reducing structure. The second isolation pad 8 is made of a special closed-cell polyurethane foam material.

[0024] A plurality of support columns 5 are arranged on the first moving platform 3 . The support columns 5 are distributed in a circular array. The support columns 5 are connected to the second static platform 6 . The support columns 5 keep the first moving platform 3 and the second static platform 6 rigidly connected.

[0025] The first bolt isolation pad 4 and the second bolt isolation pad 7 both include bolts and isolation pads. The first bolt isolation pad 4 and the second bolt isolation pad 7 are located between the first moving platform 3 and the second static platform 6 .

[0026] A plurality of first bolt isolation pads 4 are arranged on the first moving platform 3, and the bolts connect the first static platform 1, the first moving platform 3 and the first isolation pad 2. At the same time, the isolation pads isolate the bolts from the first moving platform 3 to ensure the elastic connection of the three-layer structure.

[0027] A plurality of second bolt isolation pads 7 are arranged on the second static platform 6, and the bolts connect the second static platform 6, the second dynamic platform 9 and the second isolation pads 8. Meanwhile, the isolation pads isolate the bolts from the second static platform 6 to ensure the elastic connection of the three-layer structure.

[0028] The second moving platform 9 is provided with a plurality of circular holes to provide installation interfaces for the vibration isolation device.

[0029] The first moving platform 3 and the second static platform 6 maintain a parallel position relationship, so that the vibration isolation device always remains stable during operation.

[0030] An annular ring 10 is installed in the second moving platform 9, a piston 11 is placed on the annular ring 10, an elastic strip 12 is arranged on the piston 11, the inner wall of the second moving platform 9 is kept in contact with the elastic strip 12, a plurality of first holes are opened on the annular convex part of the annular ring 10, and a cavity is formed between the elastic strip 12 and the annular convex part. During the operation of the vibration isolation device, the piston 11 is squeezed and deformed by the vibration effect, thereby causing the pressure in the cavity to change.

[0031] The annular ring 10 cooperates with the second moving platform 9 to form an upper chamber, and the second moving platform 9 cooperates with the second isolation pad 8 to form a lower chamber. The pressure change generated in the cavity causes the pressure in the upper chamber to change synchronously, and the air flow flows in the upper chamber and the lower chamber, forming a pressure difference between the upper chamber and the lower chamber.

[0032] A variable diameter throttle 13 is installed on the second moving platform 9. The variable diameter throttle 13 includes a cylindrical cavity opened inside. The airflow passes through the variable diameter throttle 13 to cause a throttling effect and generate a damping force. The damping force fills the upper chamber and the lower chamber and acts on the horizontal and vertical surfaces of the second moving platform 9 and the piston 11 at the same time, so that the vibration isolation device can isolate vibrations in the vertical and horizontal directions at the same time.

[0033] A second hole is provided in the central recessed portion of the annular ring 10, and the variable diameter throttle 13 is located in the second hole. Through holes are provided at both ends of the variable diameter throttle 13, and the cylindrical cavity is connected to the outside through the through holes. The diameter of the through hole is smaller than the diameter of the variable diameter throttle 13. The setting of the variable diameter throttle 13 can effectively improve the damping effect on the airflow.

[0034] The working principle of the utility model is as follows: a first static platform 1 is connected to a first moving platform 3 through a first isolation pad 2, a plurality of support columns 5 are arranged on the first moving platform 3, the support columns 5 are distributed in a circular array, the support columns 5 are connected to a second static platform 6, the second static platform 6 is connected to a second moving platform 9 through a second isolation pad 8, an annular ring 10 is installed in the second moving platform 9, a piston 11 is placed on the annular ring 10, an elastic strip 12 is arranged on the piston 11, a variable diameter throttle 13 is installed on the second moving platform 9, the vibration isolation effect of the vibration isolation platform is improved by connecting the static platform, the isolation pad and the moving platform, the piston 11 is squeezed by the vibration and the elastic strip 12 is deformed, so that a pressure difference is formed between the upper chamber and the lower chamber, and the damping force formed by the back and forth flow of gas is used to isolate the vibrations in the vertical and horizontal directions.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-rigidity vibration isolation platform structure, comprising a first static platform (1), characterized in that: The first static platform (1) is connected to the first dynamic platform (3) via a first isolation pad (2); a plurality of support columns (5) are arranged on the first dynamic platform (3); the support columns (5) are distributed in a circular array; the support columns (5) are connected to the second static platform (6); the second static platform (6) is connected to the second dynamic platform (9) via a second isolation pad (8); an annular ring (10) is installed in the second dynamic platform (9); a piston (11) is placed on the annular ring (10); an elastic strip (12) is arranged on the piston (11); and a variable diameter throttle (13) is installed on the second dynamic platform (9).

2. A high rigidity vibration isolation platform structure according to claim 1, characterized in that: A plurality of first bolt isolation pads (4) are provided on the first moving platform (3), and a plurality of second bolt isolation pads (7) are provided on the second stationary platform (6); the first bolt isolation pads (4) and the second bolt isolation pads (7) both comprise bolts and isolation pads.

3. A high rigidity vibration isolation platform structure according to claim 2, characterized in that: The first bolt isolation pad (4) and the second bolt isolation pad (7) are located between the first moving platform (3) and the second static platform (6), and the first moving platform (3) and the second static platform (6) maintain a parallel position relationship.

4. The high-rigidity vibration isolation platform structure according to claim 1, characterized in that: A plurality of foot pads are fixed to the bottom end of the first static platform (1), a plurality of circular holes are provided on the second dynamic platform (9), and the inner wall of the second dynamic platform (9) is kept in close contact with the elastic strip (12).

5. The high-rigidity vibration isolation platform structure according to claim 1, characterized in that: A plurality of first holes are formed on the annular convex portion of the annular ring (10), a second hole is formed in the central recessed portion of the annular ring (10), and the variable diameter throttle (13) is located in the second hole.

6. The high-rigidity vibration isolation platform structure according to claim 1, characterized in that: The annular ring (10) cooperates with the second movable platform (9) to form an upper chamber, the second movable platform (9) cooperates with the second isolation pad (8) to form a lower chamber, and the variable diameter throttle (13) includes a cylindrical cavity opened inside.

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