CN-121994437-A - Moving coil support connecting mechanism and high-frequency vibration test bench comprising same

CN121994437ACN 121994437 ACN121994437 ACN 121994437ACN-121994437-A

Abstract

The invention discloses a moving coil support connecting mechanism and a high-frequency vibration test board comprising the same. The moving coil support connecting mechanism comprises a first support connecting piece and a second support connecting piece, wherein the first support connecting piece comprises a first connecting plate made of carbon fiber, the first connecting plate is d11 in the circumferential direction of the vibration table top, the first connecting plate is d12 in the axial direction of the vibration table top, d11 is larger than d12, the second support connecting piece and the first support connecting piece are arranged on the outer side of a moving coil in a staggered mode, the second support connecting piece comprises a second connecting plate made of rubber, the second connecting plate is d21 in the circumferential direction of the vibration table top, the second connecting plate is d22 in the axial direction of the vibration table top, d21 is smaller than d22, and d11 is larger than d21. The vibrating table has extremely high vibration stability in high-frequency vibration, and the harmonic distortion degree is also greatly reduced through testing.

Inventors

Wu Wanyue
YANG YADONG
ZHANG GUISEN
LI TONGCHUN

Assignees

苏州天工测试技术有限公司

Dates

Publication Date: 20260508
Application Date: 20260409

Claims (10)

1. The utility model provides a moving coil supports coupling mechanism, be connected with the stage body of moving coil and shaking table respectively, the surface that is located of moving coil the stage body outside is provided with the vibration mesa, its characterized in that includes: The first support connecting pieces are positioned on the outer side of the movable coil and are arranged along the radial direction of the vibration table top, the first support connecting pieces are arranged in a pairwise opposite mode, each first support connecting piece comprises a first connecting plate made of carbon fiber, the size of each first connecting plate along the circumferential direction of the vibration table top is d11, the size of each first connecting plate along the axial direction of the vibration table top is d12, and d11 is larger than d12; The second support connecting piece, the second support connecting piece with first support connecting piece crisscross set up in the outside of moving coil, the second support connecting piece includes the second connecting plate of rubber material, the second connecting plate is along the size of vibration mesa's circumference direction is d21, the second connecting plate is along the size of vibration mesa's axial direction is d22, d21 is less than d22, just d11 is greater than d21.
2. The moving coil support connection mechanism of claim 1, wherein said first connection plate comprises two layers of carbon fiber plates stacked on top of each other.
3. The moving coil support connection mechanism according to claim 2, wherein the first support connection member further comprises a first mount connected to the table body, one end of the first connection plate is connected to the first mount, the first mount comprises a bottom mount block and side mount blocks located on both sides of the bottom mount block, and a rubber layer is provided between the bottom mount block and the side mount blocks.
4. A moving coil support connection mechanism according to claim 3, wherein one end of the bottom mounting block, which is far away from the moving coil, is provided with a connection surface connected with the first connection plate, one side of the connection surface connected with the first connection plate protrudes out of the side mounting block, and a slope surface which gradually inclines towards the direction of approaching the moving coil to the bottom side of the first mounting seat is further provided on one side of the bottom mounting block, which is close to the first connection plate.
5. A moving coil support connection mechanism according to claim 3, wherein a surface of the side mounting block on a side remote from the carbon fiber plate protrudes from the bottom mounting block, and a gap is provided between the bottom mounting block and the table body.
6. The moving coil support connection mechanism according to any one of claims 1 to 5, wherein the second support connection member includes a first connection head and a second connection head provided at opposite ends of the second connection plate, respectively, the first connection head is detachably connected to the table body, the second connection head is detachably connected to the moving coil, a first mounting hole penetrating the first connection head in an axial direction of the vibration table is provided, and two second mounting holes provided in the second connection head in a radial direction of the vibration table are provided, and the second connection head is connected to the moving coil frame by bolts penetrating the second mounting holes.
7. The moving coil support connection mechanism according to claim 6, wherein the thickness of the second connector is smaller than the thickness of the first connector, and a mounting spacer is further provided between the second connector and the moving coil.
8. A high frequency vibration test bench comprising the moving coil support connection mechanism of any of claims 1-7, and further comprising a limit mechanism for sensing the limit position of the vibration table.
9. The high-frequency vibration testing table according to claim 8, wherein the limit mechanism comprises a limit sensing piece connected with the movable coil, the limit sensing piece protrudes out of the upper surface of the table body, the limit mechanism further comprises a first switch and a second switch which are positioned between the lower surface of the vibration table top and the upper surface of the table body, the first switch is positioned at one side far away from the vibration table top, when the vibration table top moves to a first limit position, the lower surface of the vibration table top triggers the first switch, and a force in the opposite direction is applied to the movable coil, and when the vibration table top moves to a second limit position, the limit sensing piece triggers the second switch.
10. The high-frequency vibration test bench according to claim 9, wherein the limit induction piece and at least one of the first support connecting piece or the second support connecting piece are jointly arranged on the framework of the moving coil, and a limit groove for allowing the limit induction piece to move is formed in the bench body.

Description

Moving coil support connecting mechanism and high-frequency vibration test bench comprising same Technical Field The invention relates to the technical field of vibration test tables, in particular to a moving coil support connecting mechanism and a high-frequency vibration test table comprising the same. Background The moving coil support connection mechanism is used for keeping the vibrating table surface at the central position in the axial direction and the radial direction during the working process of the vibrating table, and has an important influence on keeping the high-frequency and stable vibrating performance of the vibrating table. However, during operation of the vibrating table, vibrations transmitted from the vibrating table to the table body are transmitted back to the vibrating table, which has a great negative effect on the performance of the vibrating table. In addition, most of the moving coil supporting and connecting mechanisms of the conventional vibrating tables have the supporting effect on the moving coil by structural members with high elastic buffer force, such as plate springs or U-shaped springs, but the structures of the conventional plate springs or U-shaped springs can continuously generate repeated micro-vibration in the deformation-restoring process, so that acting force on negative vibration of the vibrating tables is formed, and the defects of easiness in breaking or bending deformation and the like are also caused in the moving coil supporting and connecting mechanisms of the conventional vibrating tables. Thus, it is difficult for existing vibration test-stands to maintain a vibration effect with a stable frequency at high frequencies (e.g., greater than 8000Hz, even up to 10000 Hz). Disclosure of Invention In order to solve the technical problems, the invention provides a moving coil support connecting mechanism which is respectively connected with a moving coil and a table body of a vibrating table, wherein the surface of the moving coil, which is positioned on the outer side of the table body, is provided with a vibrating table surface, the moving coil support connecting mechanism is used for keeping the vibrating table surface at the middle position in the axial direction and the radial direction, the moving coil support connecting mechanism comprises first support connecting pieces, which are positioned on the outer side of the moving coil and are arranged along the radial direction of the vibrating table surface, the first support connecting pieces are oppositely arranged in pairs, the first support connecting pieces comprise first connecting plates made of carbon fiber materials, the first connecting plates are d11 in the circumferential direction of the vibrating table surface, the first connecting plates are d12 in the axial direction of the vibrating table surface, the d11 is larger than the d12, the second support connecting pieces are arranged on the outer side of the moving coil in a staggered manner with the first support connecting pieces, the second support connecting pieces comprise second connecting plates made of rubber materials, the second connecting plates are the second connecting plates made of the rubber materials, the second connecting plates are the vibrating table surface 21 in the axial direction and are d21 and are larger than the d21. The invention has the following beneficial effects: ① According to the application, the first connecting plate plays a role of rigid connection, and generates a resonance effect with the vibration of the movable coil, so that the vibrating table has a high-frequency vibration effect, the first connecting plate is made of carbon fiber, so that the weight of the movable coil supporting and connecting structure is reduced, the energy loss is reduced, the movable coil supporting and connecting structure has higher strength and fatigue resistance, the service life of the movable coil supporting and connecting structure is prolonged, the second connecting plate is set to be larger than the size in the circumferential direction along the axial direction of the vibrating table, and is not easy to deform during the vibration of the vibrating table, so that the second supporting and connecting piece plays a vibration absorption effect with high damping property, the negative vibration force of the vibrating table along the axial direction can be effectively reduced, the vibration table and the first connecting plate form a rigid-flexible effect, the stable supporting and connecting effect is realized on the vibrating table, the vibrating table has extremely high vibration stability during the high-frequency vibration of the vibrating table, the larger test piece weight can be born, and the harmonic distortion degree of the vibrating table is greatly reduced through testing. ② Because the second connecting plate is larger along the axial direction of the vibrating table, correspondingly, the second supporting connectin