Mixed air floatation vibration isolation platform

Abstract

The utility model discloses a mixed air floatation vibration isolation platform, which relates to the technical field of air floatation vibration isolation platforms, and comprises four first mounting cylinders, the inner walls of the first mounting cylinders are slidably connected with support columns, air springs are arranged between the lower ends of the support columns and the inner bottom walls of the first mounting cylinders, and the upper ends of the support columns are fixedly connected with damping vibration isolation pads. The upper end of the damping shock insulation pad is fixedly connected with a workbench, the lower end of the first installation cylinder is fixedly connected with a protection shell, the inner side wall of the protection shell is movably connected with a supporting seat, the upper end of the supporting seat is fixedly connected with an installation plate, and the upper end of the installation plate is fixedly connected with air bags. Most low-frequency vibration energy from the ground is effectively absorbed, preliminary stable support is provided for the whole platform, and the flexibility of the air bag and the damping adjusting capacity of the hydraulic shock absorber are combined, so that the platform can quickly respond to vibration, reduce the amplitude and absorb and disperse the vibration energy when facing vibration.

Description

TECHNICAL FIELD

[0001] The utility model relates to air floatation vibration isolation platform technical field especially relates to a mixed air floatation vibration isolation platform. BACKGROUND

[0002] Mixed vibration isolation air floatation optical platform, QF-H, QF-P, QF-PR series, traditional vibration isolation platform (also called optical platform or optical vibration isolation platform), mainly by 3 parts, support, vibration isolator (damping vibration isolator or air spring), mesa, use damping vibration pad generally called damping vibration platform, use air spring, generally called air floatation vibration isolation platform.

[0003] The patent with the announcement number CN217007807U discloses a vibration isolation platform, which comprises a vibration isolation plate group and supporting legs, the vibration isolation plate group comprises a top plate, a honeycomb core layer, side plates and a bottom plate, a plurality of first mounting holes are arranged on the top plate in an array, the bottom plate is arranged on the supporting legs, a shock isolation pad is arranged between the bottom plate and the supporting legs, and a placing disc is arranged between the supporting legs.

[0004] Therefore, in order to solve such problems, we propose a mixed air floatation vibration isolation platform. UTILITY MODEL CONTENTS

[0005] The utility model discloses a mixed air floatation vibration isolation platform, which aims to solve the problem that the existing vibration isolation platform cannot provide sufficient shock absorption effect, so that the precision equipment or experiment on the platform is disturbed by external vibration.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a mixed air floatation vibration isolation platform, comprising four first installation barrels, the first installation barrel inner wall is slidably connected with a support column, an air spring is arranged between the lower end of the support column and the inner bottom wall of the first installation barrel, a damping shock pad is fixedly connected to the upper end of the support column, a workbench is fixedly connected to the upper end of the damping shock pad, a protective shell is fixedly connected to the lower end of the first installation barrel, a support seat is movably connected to the inner side wall of the protective shell, an installation plate is fixedly connected to the upper end of the support seat, an air bag is fixedly connected to the upper end of the installation plate, an abutment plate is fixedly connected to the upper end of the air bag, the upper end of the abutment plate is fixedly connected with the inner top wall of the protective shell, connecting columns are arranged on the two side walls of the abutment plate, connecting plates are arranged on the ends of the connecting columns away from the abutment plate, two first mounting blocks are fixedly connected to the lower end of the connecting plate, a hydraulic shock absorber is fixedly connected to the lower end of the first mounting block, and a second mounting block is fixedly connected to the lower end of the hydraulic shock absorber.

[0007] Preferably, the upper end of the supporting base is fixedly connected with a first mounting seat, a first rotating seat is rotatably connected in the first mounting seat through a pin shaft, a second mounting cylinder is fixedly connected to one end of the first rotating seat, a third spring is fixedly connected to the inner bottom wall of the second mounting cylinder, a push rod is fixedly connected to the upper end of the third spring, the push rod is slidably connected with the inner wall of the second mounting cylinder, a second rotating seat is fixedly connected to the upper end of the push rod, a second mounting seat is rotatably connected in the second rotating seat through a pin shaft, and one end of the second mounting seat is fixedly connected with the connecting plate.

[0008] Preferably, the side wall of the air bag is movably connected with a first spring, the upper and lower ends of the first spring are fixedly connected with the mounting plate and the abutting plate respectively, the side wall of the hydraulic shock absorber is movably connected with a second spring, and the upper and lower ends of the second spring are fixedly connected with the first mounting block and the second mounting block respectively.

[0009] Preferably, the upper end of the connecting plate is fixedly connected with two second rubber plates.

[0010] Preferably, the lower end of the supporting base is rollingly connected with a first rubber plate.

[0011] Preferably, the distance between the lower end of the protective shell and the placing surface is greater than the maximum contraction amount of the hydraulic shock absorber.

[0012] The utility model has the following beneficial effects:

[0013] In the utility model, the first damping is realized by the air bags and the hydraulic shock absorber, most of the low-frequency vibration energy from the ground is effectively absorbed, and the whole platform is provided with preliminary stable support, the flexibility of the air bag and the damping adjustment capacity of the hydraulic shock absorber are combined, the platform can quickly respond and reduce the amplitude when facing vibration, the second damping is realized by the elastic deformation of the third spring when the connecting plate moves along the Z-axis direction and the third spring is extruded by the second mounting seat, the second rotating seat and the push rod, the vibration energy can be further absorbed and dispersed, especially in the medium and high frequency vibration range, good damping effect is exhibited, the vibration transmitted to the upper part of the platform is effectively reduced, the third damping is realized by the elastic deformation of the first spring and the second spring, the damping frequency spectrum is further refined, and the platform can provide effective attenuation for vibration of different frequencies. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic view of a mixed air floatation vibration isolation platform;

[0015] Figure 2 It is a three-dimensional schematic view of a protective shell in the mixed air floatation vibration isolation platform;

[0016] Figure 3The utility model provides a kind of inside mechanism perspective schematic diagram of protective shell in hybrid air floatation vibration isolation platform proposed by the utility model;

[0017] Figure 4 The utility model provides a kind of inside mechanism perspective explosion schematic diagram of protective shell in hybrid air floatation vibration isolation platform proposed by the utility model.

[0018] Legend:

[0019] 1, first installation cylinder;11, support column;12, damping shock pad;13, workbench;14, protective shell;15, support seat;151, first rubber plate;16, mounting plate;161, air bag;162, abutment plate;163, connecting column;164, first spring;17, connecting plate;171, first mounting block;172, hydraulic shock absorber;173, second mounting block;174, second spring;175, second rubber plate;18, first mounting seat;181, first rotating seat;182, second installation cylinder;183, third spring;184, push rod;185, second rotating seat;186, second mounting seat. Specific embodiments

[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0021] In the description of the utility model, it should be explained that the orientation or position relationship indicated by terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, so it cannot be understood as a limitation on the utility model. The terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance, in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected. It can be mechanically connected, or electrically connected. It can be directly connected, or indirectly connected through intermediate medium. It can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0022] Reference Figures 1-4The utility model provides an embodiment: a mixed air floatation vibration isolation platform, first installation barrel 1 is connected with the support 11 in the sliding of first installation barrel 1 inner wall, is provided with air spring between the lower end of support 11 and first installation barrel 1 inner bottom wall, is fixedly connected with the damping shock pad 12 of support 11 upper end, is fixedly connected with the workbench 13 of damping shock pad 12 upper end, is fixedly connected with the protective shell 14 of first installation barrel 1 lower end, is movably connected with the support seat 15 of protective shell 14 inner side wall, is fixedly connected with the mounting plate 16 of support seat 15 upper end, is fixedly connected with the gasbag 161 of mounting plate 16 upper end, is fixedly connected with the abutment plate 162 of gasbag 161 upper end, is fixedly connected with the protective shell 14 inner top wall of abutment plate 162 upper end, is provided with the connecting column 163 of abutment plate 162 two side walls, is provided with the connecting plate 17 of connecting column 163 far from abutment plate 162 one end, is fixedly connected with the two first mounting block 171 of connecting plate 17 lower end, is fixedly connected with the hydraulic shock absorber 172 of first mounting block 171 lower end, is fixedly connected with the second mounting block 173 of hydraulic shock absorber 172 lower end.

[0023] The setting when vibration occurs, utilize several gasbags 161 and hydraulic shock absorber 172 to carry out shock absorption, then remaining vibration passes through the air spring between the lower end of support 11 and first installation barrel 1 inner bottom wall and carries out secondary shock absorption, further prevents vibration from producing influence to workbench 13, simultaneously utilizes the movable connection of support seat 15 and protective shell 14 inner side wall, reduces the influence of dust and other impurities to first spring 164, second spring 174, second installation barrel 182, third spring 183, push rod 184, gasbag 161 and hydraulic shock absorber 172 etc.

[0024] The utility model discloses a first mounting seat 18 is fixedly connected with the support seat 15 upper end, first rotary seat 181 is rotatably connected with the inside through the pin shaft of first mounting seat 18, one end of first rotary seat 181 is fixedly connected with second installation barrel 182, the third spring 183 is fixedly connected with the inner bottom wall of second installation barrel 182, the push rod 184 is fixedly connected with third spring 183 upper end, the push rod 184 is slidably connected with the inner wall of second installation barrel 182, the second rotary seat 185 is fixedly connected with the push rod 184 upper end, the second mounting seat 186 is rotatably connected with the inside through the pin shaft of second rotary seat 185, one end of second mounting seat 186 is fixedly connected with connecting plate 17, for when connecting plate 17 moves along Z axle direction because of vibration, connecting plate 17 extrudes push rod 184 through second mounting seat 186 and second rotary seat 185, makes push rod 184 slide in the inner wall of second installation barrel 182, push rod 184 extrudes third spring 183, further utilizes the elastic deformation of third spring 183 and carries out shock absorption, increases the shock absorption effect.

[0025] The first spring 164 is movably connected to the side wall of the air bag 161, and the upper and lower ends of the first spring 164 are fixedly connected to the mounting plate 16 and the abutting plate 162 respectively, the second spring 174 is movably connected to the side wall of the hydraulic shock absorber 172, and the upper and lower ends of the second spring 174 are fixedly connected to the first mounting block 171 and the second mounting block 173 respectively, so as to utilize the elastic deformation of the first spring 164 and the second spring 174 to perform shock absorption, and further increase the shock absorption effect.

[0026] The two second rubber plates 175 are fixedly connected to the upper end of the connecting plate 17, so as to perform shock absorption when the connecting plate 17 and the protective shell 14 are connected and vibrate.

[0027] The first rubber plate 151 is rollingly connected to the lower end of the support base 15, so as to increase the stability between the support base 15 and the placing surface, increase the friction, and simultaneously perform auxiliary shock absorption.

[0028] The distance between the lower end of the protective shell 14 and the placing surface is greater than the maximum contraction amount of the hydraulic shock absorber 172, so as to avoid the collision between the lower end of the protective shell 14 and the placing surface.

[0029] Working principle: firstly, when vibration occurs, the air bags 161 and the hydraulic shock absorber 172 are utilized to perform shock absorption, then the remaining vibration is performed secondary shock absorption through the air spring between the lower end of the support column 11 and the inner bottom wall of the first mounting cylinder 1, so as to prevent the vibration from affecting the workbench 13, simultaneously, the support base 15 and the inner side wall of the protective shell 14 are movably connected, so as to reduce the influence of dust and impurities on the first spring 164, the second spring 174, the second mounting cylinder 182, the third spring 183, the push rod 184, the air bag 161 and the hydraulic shock absorber 172, when the connecting plate 17 moves along the Z-axis direction due to vibration, the connecting plate 17 extrudes the push rod 184 through the second mounting seat 186 and the second rotating seat 185, the push rod 184 slides in the inner wall of the second mounting cylinder 182, the push rod 184 extrudes the third spring 183, then the third spring 183 is utilized to perform shock absorption through the elastic deformation, and the first spring 164 and the second spring 174 are utilized to perform shock absorption through the elastic deformation, so as to further increase the shock absorption effect.

[0030] Finally, it should be noted that: the above only describes the preferred embodiments of the utility model, and is not used to limit the utility model, although the utility model is described in detail by referring to the foregoing embodiments, for the person skilled in the art, still can modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A hybrid air-floating vibration isolation platform comprising four first mounting cylinders (1), characterized in that: The first mounting cylinder (1) inner wall is slidably connected with a support column (11), an air spring is arranged between the lower end of the support column (11) and the first mounting cylinder (1) inner bottom wall, a damping shock pad (12) is fixedly connected to the upper end of the support column (11), a workbench (13) is fixedly connected to the upper end of the damping shock pad (12), a protective shell (14) is fixedly connected to the lower end of the first mounting cylinder (1), a support seat (15) is movably connected to the inner side wall of the protective shell (14), an installation plate (16) is fixedly connected to the upper end of the support seat (15), an air bag (161) is fixedly connected to the upper end of the installation plate (16), an abutment plate (162) is fixedly connected to the upper end of the air bag (161), the upper end of the abutment plate (162) is fixedly connected with the inner top wall of the protective shell (14), connecting columns (163) are arranged on the two side walls of the abutment plate (162), a connecting plate (17) is arranged at the end of the connecting column (163) away from the abutment plate (162), two first mounting blocks (171) are fixedly connected to the lower end of the connecting plate (17), a hydraulic shock absorber (172) is fixedly connected to the lower end of the first mounting block (171), and a second mounting block (173) is fixedly connected to the lower end of the hydraulic shock absorber (172).

2. The hybrid air-levitated vibration isolation platform according to claim 1, wherein: The first mounting seat (18) is fixedly connected to the upper end of the support seat (15), the first rotating seat (181) is rotatably connected to the inside of the first mounting seat (18) through a pin shaft, the second mounting cylinder (182) is fixedly connected to one end of the first rotating seat (181), the third spring (183) is fixedly connected to the inner bottom wall of the second mounting cylinder (182), the push rod (184) is fixedly connected to the upper end of the third spring (183), the push rod (184) is slidably connected with the inner wall of the second mounting cylinder (182), the second rotating seat (185) is fixedly connected to the upper end of the push rod (184), and the second mounting seat (186) is rotatably connected to the inside of the second rotating seat (185) through a pin shaft.

3. The hybrid air floatation vibration isolation platform of claim 1, wherein: The first spring (164) is movably connected to the side wall of the air bag (161), and the upper and lower ends of the first spring (164) are fixedly connected with the installation plate (16) and the abutment plate (162) respectively.

4. The hybrid air floatation vibration isolation platform of claim 1, wherein: The two second rubber plates (175) are fixedly connected to the upper end of the connecting plate (17).

5. The hybrid air-levitated vibration isolation platform of claim 1, wherein: The first rubber plate (151) is rollingly connected to the lower end of the support seat (15).

6. The hybrid air floatation vibration isolation platform of claim 1, wherein: The distance between the lower end of the protective shell (14) and the placement surface is greater than the maximum contraction amount of the hydraulic shock absorber (172).

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