CN215492345U

CN215492345U - Synchronous and asynchronous vibration system

Info

Publication number: CN215492345U
Application number: CN202121853006.5U
Authority: CN
Inventors: 府晓宏; 丁炎; 叶腾波; 祁祺; 徐常德
Original assignee: Suzhou Dongling Vibration Test Instrument Co Ltd
Current assignee: Suzhou Dongling Vibration Test Instrument Co Ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-01-11
Anticipated expiration: 2031-08-09

Abstract

The utility model provides a synchronous and asynchronous vibration system, which relates to the technical field of vibration tables and comprises at least two vibration tables arranged between a base and a test bed, at least two centralizing devices arranged in one-to-one correspondence with the vibration tables and a vibration isolation assembly arranged at the bottom of the base and elastically supporting the base. And each righting device is respectively arranged between the driving table top of the corresponding vibration table and the test bed. The support area of the vibration isolation assembly is not smaller than the area of the base bottom. Through installing many shaking tables jointly on same base to set up the vibration isolation subassembly in the bottom of base, cancelled each shaking table and with correspond the vibration isolation gasbag between the trunnion of being connected separately, eliminated the shaking table because of the motion separately that the vibration isolation gasbag of trunnion junction brought, the whole rigid connection of many shaking tables has reduced the dispersion of vibration, can guarantee that the test index is not influenced, can reduce the influence that whole vibration system caused peripheral equipment and environment simultaneously.

Description

Synchronous and asynchronous vibration system

Technical Field

The utility model relates to the technical field of vibrating tables, in particular to a synchronous and asynchronous vibrating system.

Background

At present, the development of electric vibration tables at home and abroad is more and more mature, and the types of the electric vibration tables are more and more abundant. The application environment and the test objects of the vibration table are more diversified, and particularly, in the field of aerospace industry, along with the progress of aerospace technology, the test objects such as spacecrafts are heavier and heavier, and the size of the test objects is larger and larger, so that the detection test needs to be performed through the combined vibration of a plurality of vibration tables, and the accuracy of vibration transmission needs to be ensured. The combined vibration of the plurality of vibration tables is one of the vibration tables, and in order to pursue larger thrust, the plurality of vibration tables are utilized to push one test table surface together, so that the larger thrust and vibration requirements are realized. The vibration isolation air bags are arranged between the existing vibration tables and the trunnions, in the process of jointly vibrating a plurality of vibration tables, the vibration isolation air bags of the vibration tables move respectively and can seriously interfere with test indexes, and the vibration isolation air bags of the vibration tables are cancelled, so that the whole system can generate large vibration and influence the surrounding equipment and environment.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the present invention is to overcome the defect that in the same asynchronous vibration system with multiple vibration tables in the prior art, the respective vibration between the vibration tables affects the vibration performance index or affects the surrounding equipment and environment, thereby providing a same asynchronous vibration system.

The utility model is realized by the following technical scheme that the synchronous and asynchronous vibration system comprises at least two vibration tables, wherein the vibration tables are arranged between a base and a test bed;

the at least two righting devices correspond to the vibrating table one by one and are arranged between the driving table surface of the vibrating table and the test bed;

a vibration isolation assembly; the base is arranged at the bottom of the base and elastically supported; the support area of the vibration isolation assembly is not smaller than the area of the bottom of the base.

Optionally, the vibration isolation assembly comprises a plurality of vibration isolation units; the vibration isolation units are evenly distributed at intervals at least along the edge of the base.

Optionally, any one of the vibration isolation units is a vibration isolation air bag.

Optionally, the test bed further comprises at least one auxiliary support component which is fixed on the base and is suitable for elastically supporting the test bed; the auxiliary supporting assembly is arranged between any two adjacent vibration tables.

Optionally, the auxiliary support assembly includes:

the supporting frame is fixed on the base;

and the auxiliary air bag is arranged between the support frame and the test bed.

Optionally, the auxiliary support assembly further includes a limiting member disposed on the support frame; the locating part encloses and establishes the test bench periphery is suitable for right the test bench carries out spacing on two at least horizontal directions.

Optionally, when the auxiliary supporting assemblies are at least two, all the supporting frames are integrally formed.

Optionally, four vibration tables are arranged and are respectively located at four vertex angles of the square;

the auxiliary supporting components are arranged in four groups; the distribution is located at the middle points of the four sides of the square where the vibration table is located.

Optionally, the righting device includes:

a plurality of centralizer assemblies; two ends of any one of the righting assemblies are distributed and connected with the test bed and the driving table surface of the vibration table; the righting assemblies are uniformly arranged at intervals around a spherical hinge supporting structure between the test bed and the vibration table;

a plurality of auxiliary components; two ends of any auxiliary assembly are distributed and connected with the driving table board of the test table and the vibration table; the auxiliary assemblies are arranged around the spherical hinge supporting structure at uniform intervals.

Optionally, any of the centralizing assemblies comprises:

the two mounting seats are respectively fixed on the driving table tops of the test bed and the vibration table;

the two ends of the supporting swing rod are movably arranged in the mounting seat in a penetrating way respectively; a moving space is reserved in the mounting seat along the axial direction of the support swing rod;

the buffer parts are respectively sleeved at two ends of the supporting swing rod and are tightly matched with the corresponding mounting seats;

the auxiliary component is a damper; and two ends of the damper are respectively hinged with the test bed and the driving table surface of the vibration table.

The technical scheme of the utility model has the following advantages:

1. the synchronous and asynchronous vibration system provided by the utility model comprises at least two vibration tables, wherein the vibration tables are arranged between a base and a test bed, the bottom of the base is provided with a vibration isolation assembly, the base is supported by the vibration isolation assembly, and the supporting area of the vibration isolation assembly is not smaller than the area of the bottom of the base. The vibration isolation air bags between each vibration table and the corresponding trunnion are eliminated by mounting the vibration tables on the same base together and arranging the vibration isolation assembly at the bottom of the base, so that when the vibration tables vibrate in a combined manner, the respective movement of each vibration table caused by the vibration isolation air bags at the trunnions is eliminated, the vibration tables are integrally and rigidly connected, the vibration dispersion is reduced, and the test indexes can be ensured not to be influenced; meanwhile, the vibration isolation assembly arranged at the bottom of the base can avoid the whole vibration system from generating larger vibration, and reduce the influence on surrounding equipment and environment.

2. The utility model provides a synchronous and asynchronous vibration system, wherein the vibration isolation assembly comprises a plurality of vibration isolation units; the vibration isolation units are uniformly distributed at intervals at least along the edge of the base, so that when a plurality of vibration tables vibrate synchronously and asynchronously, particularly asynchronously, the whole system vibrates greatly, the transverse shearing force borne by the base can be borne, the stability of the whole system is ensured, the whole system is not influenced by the shearing force, and the system equipment is protected from being damaged.

3. According to the synchronous and asynchronous vibration system provided by the utility model, the auxiliary support assembly is fixed on the base and used for elastically supporting the test bed, so that the effects of buffering and vibration isolation can be achieved on the vibration of the test bed, the load capacity of the test bed can be improved, and the test requirements of test objects with larger mass and larger volume can be met.

4. According to the synchronous and asynchronous vibration system provided by the utility model, the centering devices are arranged between the driving table board of the vibration table and the test table in a one-to-one correspondence manner, and the plurality of centering components are uniformly arranged at intervals around the spherical hinge support structure between the test table and the vibration table, so that the vibration phase difference between the vibration tables can be compensated in the combined vibration test process of the plurality of vibration tables, and the centering on the test table is realized; in addition, a plurality of auxiliary assemblies are arranged at equal intervals around the circle of the spherical hinge supporting structure, the auxiliary assemblies are used for strengthening and reinforcing the test bed during the combined vibration test of a plurality of vibration tables, particularly when each vibration table operates asynchronously, when the test bed inclines to a large angle and has the tendency that a test object is unbalanced and topples over, the auxiliary assemblies are combined to strengthen the restoring force for the test bed, the strengthening effect on the test bed is enhanced, the test bed vibrates in a safety range, and the risk that the test object is unbalanced and topples over or even damages the table body of the vibration table is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a perspective view of a synchronous and asynchronous system in an embodiment of the present invention;

FIG. 2 is a schematic view of the mounting structure of the vibration isolation assembly according to the embodiment of the present invention;

FIG. 3 is a perspective view of an isolation bladder in an embodiment of the present invention;

FIG. 4 is a schematic view of an installation structure of an auxiliary support assembly according to an embodiment of the present invention;

FIG. 5 is a perspective view of an auxiliary support assembly in an embodiment of the present invention;

FIG. 6 is a front view of a centralizer according to an embodiment of the utility model;

FIG. 7 is a top view of a centralizer according to an embodiment of the utility model;

figure 8 is a cross-sectional view of a centralizer assembly in an embodiment of the utility model.

Description of reference numerals:

1. a vibration table; 2. a base; 3. a test bed; 4. a vibration isolation assembly; 41. a vibration isolation unit; 411. a vibration isolation air bag; 5. an auxiliary support assembly; 51. a support frame; 52. an auxiliary air bag; 53. a limiting member; 6. a righting device; 61. a righting assembly; 611. a mounting seat; 6111. a stepped bore; 612. supporting a swing rod; 613. a buffer member; 62. an auxiliary component; 63. a spherical hinge support structure; 7. a first connecting plate; 8. a second connecting plate; 9. a wall panel.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

The utility model provides a synchronous and asynchronous vibration system, which comprises at least two vibration tables 1 arranged between a base 2 and a test bed 3, at least two centralizing devices 6 arranged corresponding to the vibration tables 1 one by one, and vibration isolation components 4 arranged at the bottom of the base 2 and elastically supporting the base 2, as shown in figure 1. Each righting device 6 is respectively arranged between the driving table surface of the corresponding vibration table 1 and the test bed 3. The vibration isolation assembly 4 has a supporting area not smaller than that of the bottom of the base 2. In this embodiment, four vibration tables 1 and four centering devices 6 are provided. The four vibration tables 1 are respectively positioned at four vertex angles of the square, and the four righting devices 6 are correspondingly arranged between the driving table top of each vibration table 1 and the test bed 3 one by one. Of course, the number of the vibration tables 1 may be three, six, etc., and the corresponding centering devices 6 may also be three, six, etc., as required.

The equal symmetry in arbitrary both sides of each shaking table 1 is equipped with wallboard 9 that is used for installing the 1 stage body of shaking table, wallboard 9 fixed mounting is on bottom base 2, be equipped with the trunnion on wallboard 9, the stage body both sides of shaking table 1 are passed through bolt fixed mounting on the trunnion, therefore, whole rigid connection is realized to four shaking tables 1 and bottom base 2, eliminated four shaking tables 1 because of the motion separately that brings with the vibration isolation gasbag of trunnion junction separately, guarantee not influenced to whole test performance index.

Referring to fig. 2, in conjunction with fig. 3, the vibration isolation assembly 4 includes a plurality of vibration isolation units 41; in this embodiment, any of the vibration isolation units 41 is the vibration isolation balloon 411. The number of the vibration isolation airbags 411 is 12, and the vibration isolation airbags are uniformly distributed along the edge of the base 2 at intervals, and the supporting area of the vibration isolation assembly 4 refers to the area of the vibration isolation assembly 4, namely the vibration isolation airbags 411, which is not smaller than the area of the bottom of the base 2, so that the vibration isolation assembly 4 plays a role in preventing shearing on the base 2. Of course, the vibration isolation unit may also be a vibration isolation spring.

Referring to fig. 4, it further comprises at least one auxiliary support assembly 5 fixed on the base 2 and adapted to elastically support the test bed 3; the auxiliary supporting assembly 5 is arranged between any two adjacent vibration tables 1. In this embodiment, the auxiliary supporting members 5 are provided in four groups, and are distributed at the middle points of the four sides of the square where the vibration table 1 is located.

Referring to fig. 5, in particular, the auxiliary support assembly 5 includes a support bracket 51 fixed to the base 2 and an auxiliary air bag 52 disposed between the support bracket 51 and the test stand 3. In this embodiment, the four support frames 51 of the four auxiliary support assemblies 5 are integrally formed, so that the overall rigidity of the auxiliary support assemblies 5 can be improved, and the support stability of the auxiliary support assemblies on the test bed 3 can be improved. In addition, in order to further increase the rigidity of the whole system and not to enlarge the volume of the whole system, the wall plate 9 between two adjacent vibration tables 1 can be used as a support frame 51 for mounting the auxiliary air bag 52.

The auxiliary supporting assembly 5 further comprises a limiting member 53 disposed on the supporting frame 51; the limiting member 53 is arranged around the test bed 3 and is adapted to limit the test bed 3 in at least two horizontal directions. In this embodiment, the periphery of the test bed 3 is provided with four limiting parts 53, and the limiting parts 53 in this embodiment are vertically arranged baffle plates, so that the test bed 3 can be limited in four directions in the horizontal plane.

The righting device 6 in this embodiment comprises a plurality of righting assemblies 61 and a plurality of auxiliary assemblies 62. As shown in fig. 6, two ends of any one of the centering assemblies 61 are respectively connected to the driving table surfaces of the test table 3 and the vibration table 1, and the centering assemblies 61 are uniformly arranged around the spherical hinge support structure 63 between the test table 3 and the vibration table 1 at intervals; the two ends of any auxiliary assembly 62 are respectively connected with the driving table surfaces of the test table 3 and the vibration table 1, and the auxiliary assemblies 62 are uniformly arranged around the spherical hinge supporting structure 63 at intervals. As shown in fig. 7, in the present embodiment, eight centering assemblies 61 and eight auxiliary assemblies 62 are provided for each centering device 6, and the centering assemblies 61 and the auxiliary assemblies 62 are arranged on the same circumference around the ball-and-socket joint support structure 63 at intervals. Of course, four, six, etc. centering assemblies 61 may be provided, and four, six, etc. corresponding auxiliary assemblies 62 may be provided, as desired.

As further shown in fig. 7, in this embodiment, eight centralizing assemblies 61 are evenly spaced about the ball-joint support structure 63. The spherical hinge supporting structure 63 is a hydraulic spherical hinge, and realizes decoupling and force transmission on the vibration table 1.

A first connecting plate 7 is fixedly connected to the lower surface of the test bed 3 through bolts, and a second connecting plate 8 is fixedly connected to the driving table top of the vibration table 1 through bolts. Two ends of the righting component 61 are respectively connected with the driving table-board of the test bed 3 and the vibrating table 1 through a first connecting plate 7 and a second connecting plate 8.

The centralizer assembly 61 comprises two mounts 611, a support rocker 612 and a bumper 613. Specifically, referring to fig. 8, two mounting seats 611 are fixedly mounted on the first connecting plate 7 and the second connecting plate 8, respectively, by bolts. A stepped hole 6111 is formed in the mounting seat 611. The large diameter hole of the stepped hole 6111 is used for mounting a rubber gasket and the support swing rod 612, and the small diameter hole of the stepped hole 6111 can be used for the support swing rod 612 to move in the axial direction. In this embodiment, the buffer 613 is a rubber gasket. Two ends of the supporting swing rod 612 are fixed in the stepped hole 6111 of the mounting seat 611 at the corresponding side, and the rubber gasket is sleeved at the end of the supporting swing rod 612 and filled between the supporting swing rod 612 and the inner wall of the corresponding stepped hole 6111, so that the supporting swing rod 612 and the mounting seat 611 form close fit.

As a deformation mode, the buffer 613 may also be a spring, two ends of the support swing rod 612 are sleeved with the spring and then inserted into the step hole 6111 of the mounting seat 611, and the spring abuts against a step surface of the step hole 6111; a limit ring abutting against the spring is sleeved on one side of the two ends of the support swing rod 612 far away from the spring. To improve the cushioning effect and reduce the rigid contact, the stop ring may be made of rubber, and the stop ring is tightly fitted with the support swing rod 612.

As shown in fig. 1, two ends of any auxiliary assembly 62 are respectively connected with the driving table top of the corresponding test bed 3 and the corresponding vibration table 1 through a first connecting plate 7 and a second connecting plate 8; eight sub-assemblies 62 are evenly spaced around the ball-hinge support structure 63.

Eight supplementary subassembly 62 and eight components 61 of righting crisscross interval settings on same circumference, can improve the effect of the mutual synergism of the two, the reinforcing effect of righting.

In this embodiment, the auxiliary component 62 is a damper; the two ends of the damper are respectively hinged with the first connecting plate 7 and the second connecting plate 8. Two articulated shafts mutually perpendicular setting at attenuator both ends. In this embodiment, the axis of the hinge shaft of the damper hinged to the first connecting plate 7 is coplanar with and perpendicular to the axis of the spherical hinge support structure 63, and the axis of the hinge shaft of the damper hinged to the second connecting plate 8 intersects with and is perpendicular to the axis of the spherical hinge support structure 63. Of course, the position relationship of the hinge shafts at the two ends of the damper can be interchanged.

The auxiliary component 62 may also be a rubber post or other resilient member that may act as a cushion.

In order to increase the righting effect and the load of the test stand 3, the structural strength of the auxiliary assembly 62 is greater than that of the righting assembly 61. For example, a damper with a diameter larger than that of the support swing rod 612 or a damper made of a material with stronger structural strength is selected.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. A synchronous-asynchronous vibration system is characterized by comprising

At least two vibration tables (1) arranged between the base (2) and the test bed (3);

the at least two righting devices (6) correspond to the vibrating table (1) one by one and are arranged between the driving table surface of the vibrating table (1) and the test bed (3);

a vibration isolation assembly (4); the base (2) is arranged at the bottom of the base (2) and is elastically supported; the support area of the vibration isolation component (4) is not smaller than the area of the bottom of the base (2).

2. Asynchronous and synchronous vibration system according to claim 1, characterized in that the vibration isolation assembly (4) comprises a plurality of vibration isolation units (41); the vibration isolation units (41) are uniformly distributed at intervals at least along the edge of the base (2).

3. Asynchronous and synchronous vibration system according to claim 2, characterized in that any of the vibration isolation units (41) is a vibration isolation balloon (411).

4. A vibration system according to any one of claims 1 to 3, characterized by further comprising at least one auxiliary support assembly (5) fixed on said base (2) and adapted to elastically support said test bench (3); the auxiliary supporting component (5) is arranged between any two adjacent vibration tables (1).

5. Synchronous-asynchronous vibration system according to claim 4, characterized in that said auxiliary support assembly (5) comprises:

a support frame (51) fixed to the base (2);

and an auxiliary air bag (52) arranged between the support frame (51) and the test bed (3).

6. Synchronous-asynchronous vibration system according to claim 5, characterized in that said auxiliary supporting assembly (5) further comprises a limit stop (53) provided on said supporting frame (51); the limiting part (53) is arranged around the periphery of the test bed (3) and is suitable for limiting the test bed (3) in at least two horizontal directions.

7. Synchronous and asynchronous vibration system according to claim 6, characterized in that when at least two auxiliary support assemblies (5) are provided, all the support frames (51) are integrally formed.

8. Synchronous and asynchronous vibration system according to claim 5, characterized in that said vibration tables (1) are provided in four, respectively at the four vertices of a square;

the auxiliary supporting components (5) are arranged in four groups; the distribution is positioned at the middle points of the four sides of the square where the vibration table (1) is positioned.

9. Synchronous-asynchronous vibration system according to claim 1, characterized in that the righting means (6) comprise:

a plurality of centralizer assemblies (61); two ends of any one of the righting assemblies (61) are distributed and connected with the test bed (3) and the driving table surface of the vibration table (1); the righting assemblies (61) are uniformly arranged at intervals around a spherical hinge supporting structure (63) positioned between the test bed (3) and the vibration table (1);

a plurality of auxiliary components (62); two ends of any auxiliary assembly (62) are respectively connected with a test bed (3) and a driving table top of the vibration table (1); the auxiliary components (62) are evenly spaced around the ball joint support structure (63).

10. Synchronous-asynchronous vibration system according to claim 9, characterized in that any of said righting assemblies (61) comprises:

the two mounting seats (611) are respectively fixed on the driving table tops of the test bed (3) and the vibration table (1);

the two ends of the supporting swing rod (612) are movably arranged in the mounting seat (611) in a penetrating mode respectively; a moving space is reserved in the mounting seat (611) along the axial direction of the support swing rod (612);

the buffer pieces (613) are respectively sleeved at two ends of the supporting swing rod (612) and are tightly matched with the corresponding mounting seats (611);

the auxiliary component (62) is a damper; and the two ends of the damper are respectively hinged with the test bed (3) and the driving table surface of the vibration table (1).