Hemispherical harmonic oscillator excitation vibration stopping device

Abstract

The utility model discloses a hemispherical harmonic oscillator excitation vibration stopping device which comprises a rotary table and an excitation vibration stopping mechanism, the excitation vibration stopping mechanism is arranged on one side of the rotary table, a hemispherical harmonic oscillator is supported on the rotary table through a clamping mechanism, and the rotary table drives the hemispherical harmonic oscillator to rotate in the circumferential direction when rotating. The excitation vibration stopping mechanism comprises a three-axis displacement platform, a first rotation driving mechanism arranged on the three-axis displacement platform and a rotating shaft in transmission connection with the first rotation driving mechanism, a vibration stopping brush is arranged at one end of the rotating shaft, a knocking hammer is arranged at the other end of the rotating shaft, and the three-axis displacement platform is used for adjusting the direction of the first rotation driving mechanism. The first rotation driving mechanism is used for driving the rotating shaft to rotate in the vertical plane so that the vibration stopping brush or the knocking hammer can abut against the set position of the hemispherical harmonic oscillator. According to the utility model, hemispherical excitation and vibration stopping functions are integrated, excitation test requirements of different products can be met, and the test efficiency is improved without damaging the hemispherical harmonic oscillator.

Description

Technical Field

[0001] The utility model relates to the technical field of hemispherical resonator gyroscope preparation, in particular to a hemispherical resonator excitation and vibration-stopping device. Background Art

[0002] A hemispherical resonant gyroscope, also known as an oscillator, is a solid-state wave gyroscope based on the Coriolis effect. It boasts high precision, long life, and high reliability, making it a key area of ​​future gyroscope development. Future applications for hemispherical resonant gyroscopes include aerospace, navigation, strategic and tactical weaponry, and many other fields. As a key component of a solid-state vibratory gyroscope, the quality factor (Q) of the hemispherical resonator determines the final product performance in many aspects, such as frequency stability, power consumption, and random drift. The Q-value testing method and accuracy provide critical information for each process step during the manufacturing process, guiding subsequent processes. Therefore, research on oscillator Q-value testing methods is crucial, as the results are directly related to the overall performance of the product during and after the manufacturing process.

[0003] Currently, the main methods of hemispherical excitation are tapping method and piezoelectric ceramic method. The tapping method is to tap the lip of the hemisphere with an object and use equipment to observe the attenuation process of its oscillation; the piezoelectric ceramic method usually places piezoelectric ceramics on the end face of the vibrator's shaft handle and applies vertical vibration along the shaft handle direction to the vibrator to excite it.

[0004] For high-Q hemispheric testing, the above-mentioned excitation method has the following main difficulties: 1) As the quality factor Q value becomes higher and higher, the test cycle needs to be longer. At the same time, due to the very low energy loss, it takes a long time to completely stop the vibration, which greatly affects the test efficiency of the product; 2) The excitation device is complex and cannot meet the excitation test requirements of different products. Utility Model Content

[0005] In response to the problems in the background technology, the utility model proposes a hemispherical resonator excitation and vibration isolation device that integrates hemispherical excitation and vibration isolation functions, which can meet the excitation test requirements of different products, improve the test efficiency while not damaging the hemispherical resonator.

[0006] The utility model adopts the following technical solutions:

[0007] A hemispherical resonator excitation and vibration-stopping device includes a turntable and an excitation and vibration-stopping mechanism. The excitation and vibration-stopping mechanism is arranged on one side of the turntable. The hemispherical resonator is supported on the turntable by a clamping mechanism. When the turntable rotates, the hemispherical resonator is driven to rotate circumferentially.

[0008] The excitation and vibration-stopping mechanism includes a three-axis displacement platform, a first rotation drive mechanism arranged on the three-axis displacement platform, and a rotating shaft connected to the first rotation drive mechanism. A vibration-stopping brush is provided at one end of the rotating shaft, and a knocking hammer is provided at the other end of the rotating shaft. The three-axis displacement platform is used to adjust the orientation of the first rotation drive mechanism, and the first rotation drive mechanism is used to drive the rotating shaft to rotate in a vertical plane so that the vibration-stopping brush or the knocking hammer abuts against the set position of the hemispherical resonator.

[0009] Optionally, the anti-vibration brush is made of nylon.

[0010] Optionally, the material of the striking hammer is fluoroplastic.

[0011] Optionally, the first rotation drive mechanism is mounted on the three-axis displacement platform via a mounting seat.

[0012] Optionally, the turntable and the excitation and vibration-isolating mechanism are mounted on a test table bottom plate of the vacuum testing equipment via an adapter plate.

[0013] Optionally, a second rotation drive mechanism is further installed on the adapter plate, and the second rotation drive mechanism is transmission-connected to the turntable for driving the turntable to rotate circumferentially.

[0014] Optionally, a camera is provided in the inner cavity of the vacuum testing equipment for observing the relative position and distance between the striking hammer and the hemispherical resonator.

[0015] Optionally, the clamping mechanism includes a driving assembly, a clamp, and a fixing seat, the clamp including a clamping portion and a driving portion connected to the lower end of the clamping portion, a positioning hole is provided on the top surface of the clamping portion to cooperate with the anchor column in the hemispherical resonator, and a plurality of first side grooves connected to the positioning holes are provided on the side wall of the clamping portion at intervals in the circumference, and the first side grooves extend upward to penetrate the top surface of the clamping portion, so that the clamping portion forms a structure consisting of a plurality of clamping blocks connected at the bottom.

[0016] The outer wall surface of the clamping portion forms a first conical surface that is larger at the top and smaller at the bottom. The top surface of the fixing seat is provided with a receiving groove. The wall of the receiving groove forms a second conical surface that cooperates with the first conical surface. The clamping portion is clamped in the receiving groove through the cooperation of the first conical surface and the second conical surface, so that the multiple clamping blocks enclose the positioning hole and hold the inner anchor column of the hemispherical resonator tightly.

[0017] The driving part passes through the fixing seat and is connected to the driving assembly. The driving assembly is installed on the fixing seat and is used to drive the clamp to move up and down until the clamping part extends from the accommodating groove or is clamped into the accommodating groove.

[0018] Optionally, a mounting hole is provided on the bottom surface of the fixing seat, and the driving assembly includes a screw and a gear. The gear is installed in the mounting hole for vertical rotation, and the screw is installed in the mounting hole for horizontal rotation and is connected to the gear transmission. The driving part extends into the mounting hole, passes through the inner hole of the gear and is threadedly connected to the gear. A driving member is provided on the fixing seat, which is connected to the screw transmission to drive the screw to rotate.

[0019] Optionally, a base is fixed in the mounting hole, and the gear is located between the top surface of the mounting hole and the base.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] The hemispherical resonator excitation and vibration isolation device of the utility model integrates hemispherical excitation and vibration isolation functions in one, has a simpler structure, and can meet the excitation test requirements of different products. During the test, the electric structure can realize instant switching between excitation and vibration isolation, thereby improving the test efficiency while causing no damage to the hemispherical resonator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the present invention more easily understood, the present invention will be described in more detail with reference to the specific embodiments shown in the accompanying drawings. These drawings only depict typical embodiments of the present invention and should not be considered as limiting the scope of protection of the present invention.

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the hemispherical resonator excitation and vibration isolation device according to an embodiment of the present utility model.

[0024] Figure 2 This is a schematic diagram of the main structure of the hemispherical resonator excitation and vibration suppression device according to an embodiment of the present utility model.

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the clamping mechanism clamping the hemispherical resonator according to an embodiment of the utility model.

[0026] Figure 4 This is a schematic diagram of the explosion structure of the clamping mechanism of an embodiment of the utility model clamping a hemispherical resonator.

[0027] Figure 5 This is a schematic cross-sectional structural diagram of a clamping mechanism clamping a hemispherical resonator according to an embodiment of the utility model.

[0028] Figure numerals: 1. turntable; 2. excitation and vibration-isolating mechanism; 21. three-axis displacement platform; 22. first rotation drive mechanism; 23. rotating shaft; 24. vibration-isolating brush; 25. knocking hammer; 26. mounting seat; 3. clamping mechanism; 31. clamping part; 311. positioning hole; 312. first side groove; 313. first conical surface; 32. fixing seat; 321. accommodating groove; 322. second conical surface; 323. mounting hole; 33. driving member; 34. bearing; 35. screw; 36. gear; 37. base; 38. fastener; 39. driving part; 4. adapter plate; 5. test bench bottom plate; 6. second rotation drive mechanism; 7. camera; 8. hemispherical resonator. DETAILED DESCRIPTION

[0029] The following describes the implementation methods of the present invention with reference to the accompanying drawings so that those skilled in the art can better understand the present invention and implement it. However, the enumerated embodiments are not intended to limit the present invention. Unless there is a conflict, the following embodiments and the technical features in the embodiments can be combined with each other, and the same components are represented by the same figure marks.

[0030] like Figure 1-Figure 5 As shown, the hemispherical resonator excitation and vibration-isolating device of this embodiment includes a turntable 1 and an excitation and vibration-isolating mechanism 2. The excitation and vibration-isolating mechanism 2 is arranged on one side of the turntable 1. The hemispherical resonator is supported on the turntable 1 by a clamping mechanism 3. When the turntable 1 rotates, the hemispherical resonator is driven to rotate circumferentially.

[0031] The excitation and vibration-isolating mechanism 2 includes a three-axis displacement platform 21, a first rotation drive mechanism 22 arranged on the three-axis displacement platform 21, and a rotating shaft 23 that is transmission-connected to the first rotation drive mechanism 22. A vibration-isolating brush 24 is provided at one end of the rotating shaft 23, and a knocking hammer 25 is provided at the other end of the rotating shaft 23. The three-axis displacement platform 21 is used to adjust the orientation of the first rotation drive mechanism 22, and the first rotation drive mechanism 22 is used to drive the rotating shaft 23 to rotate in a vertical plane so that the vibration-isolating brush 24 or the knocking hammer 25 abuts against the set position of the hemispherical resonator.

[0032] In this embodiment, the anti-vibration brush 24 is made of nylon. Nylon will not damage the hemisphere during vibration control, and has a large contact area with the hemisphere and good energy absorption effect, thereby achieving rapid vibration control.

[0033] In this embodiment, the hammer 25 is made of fluoroplastics, which have a certain strength to successfully excite the hemispherical resonator, and have a low friction coefficient and a special self-lubricating property, so as not to damage the hemispherical resonator.

[0034] In this embodiment, the first rotation driving mechanism 22 is mounted on the three-axis displacement platform 21 via a mounting seat 26 .

[0035] In this embodiment, the turntable 1 and the excitation and vibration-isolating mechanism 2 are mounted on a test table bottom plate 5 of the vacuum testing equipment via an adapter plate 4 .

[0036] In this embodiment, a second rotation drive mechanism 6 is further installed on the adapter plate 4 . The second rotation drive mechanism 6 is transmission-connected to the turntable 1 for driving the turntable 1 to rotate circumferentially.

[0037] In this embodiment, a camera 7 is provided in the inner cavity of the vacuum testing device for observing the relative position and distance between the striking hammer 25 and the hemispherical resonator.

[0038] During testing, the relative position and distance between hammer 25 and hemispherical resonator 8 can be observed in real time via camera 7. Adjusting the three-axis displacement platform 21 allows for more precise adjustment of the height, position, and distance between rotating shaft 23 and hemispherical resonator 8, ensuring better contact between hammer 25 and the lip of hemispherical resonator 8 with greater consistency and repeatability. The combination of three-axis displacement platform control and visualization enables excitation testing of various products.

[0039] In this embodiment, the clamping mechanism 3 includes a drive assembly, a clamp, and a fixing seat 32. The clamp includes a clamping portion 31 and a drive portion 39 connected to the lower end of the clamping portion 31. A positioning hole 311 is provided on the top surface of the clamping portion 31 to cooperate with the anchor column in the hemispherical resonator. A plurality of first side grooves 312 communicating with the positioning holes 311 are circumferentially spaced apart on the side wall of the clamping portion 31. The first side grooves 312 extend upward to penetrate the top surface of the clamping portion 31, so that the clamping portion 31 forms a structure consisting of a plurality of clamping blocks connected at the bottom.

[0040] The outer wall surface of the clamping portion 31 forms a first conical surface 313 that is larger at the top and smaller at the bottom. The top surface of the fixing seat 32 is provided with a receiving groove 321. The groove wall of the receiving groove 321 forms a second conical surface 322 that cooperates with the first conical surface 313. The clamping portion 31 is clamped into the receiving groove 321 through the cooperation of the first conical surface 313 and the second conical surface 322, so that the multiple clamping blocks enclose the positioning hole 311 and hold the inner anchor column of the hemispherical resonator tightly.

[0041] The driving portion 39 passes through the fixing seat 32 and is connected to the driving assembly. The driving assembly is installed on the fixing seat 32 and is used to drive the clamp to move up and down until the clamping portion 31 extends from the accommodating groove 321 or is clamped into the accommodating groove 321.

[0042] Thus, the driving component drives the clamping part to extend from the accommodating groove, so that the inner anchor column of the hemispherical resonator 8 can be inserted into the positioning hole with a clearance fit, and then the driving component drives the clamping part to be clamped into the accommodating groove. The clamping blocks of the clamping part are retracted to hold the inner anchor column of the hemispherical resonator 8 tightly, thereby not damaging the inner anchor column of the hemispherical resonator 8.

[0043] In this embodiment, a mounting hole 323 is provided on the bottom surface of the fixing seat 32, and the driving assembly includes a screw 35 and a gear 36. The gear 36 is vertically rotatably installed in the mounting hole 323, and the two ends of the screw 35 are horizontally rotatably installed in the mounting hole 323 through bearings 34 and are transmission-connected to the gear 36. The driving part 39 extends into the mounting hole 323, passes through the inner hole of the gear 36 and is threadedly connected to the gear 36. The fixing seat 32 is provided with a driving member 33 that is transmission-connected to the screw 35 to drive the screw 35 to rotate.

[0044] Before clamping, the screw 35 is driven to rotate by rotating the driving member 33, thereby driving the gear 36 to rotate. Since the gear 36 and the driving part 39 are a screw-nut pair structure, the driving part 39 moves up to push out and open the clamping part 31. After the clamped hemispherical resonator 8 is placed in the middle of the clamping part 31, the rotating driving member 33 drives the screw 35 and the gear 36 to transmit, and the driving part 39 moves down, so that the clamping part 31 can clamp the hemispherical resonator 9. The clamping mechanism 3 can ensure that the clamping position of the hemispherical resonator 8 is consistent each time and remains concentric with the clamping mechanism 3. The clamping mechanism 3 is connected to the turntable 1. During the test, the motor 6 drives the hemispherical resonator 8 to rotate by driving the turntable 1, thereby achieving excitation of the hemispherical resonator lip edge in different axial directions and angles. In addition, combined with the camera 7, the rotation position of the hemispherical resonator 8 can be observed in real time, and a specific position or angle of the hemispherical resonator can be excited.

[0045] In this embodiment, a base 37 is fixed in the mounting hole 323 via a plurality of fasteners 38 , and the gear 36 is located between the top surface of the mounting hole 323 and the base 37 .

[0046] The embodiments described above are merely preferred embodiments of the present invention. The phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments" used in this specification may refer to one or more of the same or different embodiments of the present disclosure. Any common changes and substitutions made by those skilled in the art within the scope of the present invention are intended to be encompassed within the scope of protection of the present invention.

Claims

1. A hemispherical resonator excitation and vibration-isolating device, characterized in that: The invention comprises a turntable (1) and an excitation and vibration-stopping mechanism (2), wherein the excitation and vibration-stopping mechanism (2) is arranged on one side of the turntable (1), and the hemispherical resonator is supported on the turntable (1) through a clamping mechanism (3). When the turntable (1) rotates, the hemispherical resonator is driven to rotate in a circumferential direction. The excitation vibration-stopping mechanism (2) comprises a three-axis displacement platform (21), a first rotation drive mechanism (22) arranged on the three-axis displacement platform (21), and a rotating shaft (23) connected to the first rotation drive mechanism (22). One end of the rotating shaft (23) is provided with a vibration-stopping brush (24), and the other end of the rotating shaft (23) is provided with a knock hammer (25). The three-axis displacement platform (21) is used to adjust the orientation of the first rotation drive mechanism (22), and the first rotation drive mechanism (22) is used to drive the rotating shaft (23) to rotate in a vertical plane so that the vibration-stopping brush (24) or the knock hammer (25) abuts against a set position of the hemispherical resonator.

2. The hemispherical resonator excitation and vibration-isolating device according to claim 1, characterized in that: The material of the anti-vibration brush (24) is nylon.

3. The hemispherical resonator excitation and vibration suppression device according to claim 1, characterized in that: The material of percussion hammer (25) is fluoroplastic.

4. The hemispherical resonator excitation and vibration suppression device according to claim 1, characterized in that: The first rotary drive mechanism (22) is mounted on the three-axis displacement platform (21) via a mounting seat (26).

5. The hemispherical resonator excitation and vibration suppression device according to claim 1, characterized in that: The turntable (1) and the excitation vibration-stopping mechanism (2) are mounted on a test table bottom plate (5) of a vacuum test device via an adapter plate (4).

6. The hemispherical resonator excitation and vibration-isolating device according to claim 5, characterized in that: A second rotary drive mechanism (6) is also mounted on the adapter plate (4). The second rotary drive mechanism (6) is transmission-connected to the turntable (1) and is used to drive the turntable (1) to rotate circumferentially.

7. The hemispherical resonator excitation and vibration suppression device according to claim 1, characterized in that: A camera (7) is provided in the inner cavity of the vacuum testing device for observing the relative position and distance between the striking hammer (25) and the hemispherical resonator.

8. The hemispherical resonator excitation and vibration-isolating device according to any one of claims 1 to 7, characterized in that: The clamping mechanism (3) comprises a driving assembly, a clamp, and a fixing seat (32); the clamp comprises a clamping portion (31) and a driving portion (39) connected to the lower end of the clamping portion (31); a positioning hole (311) is provided on the top surface of the clamping portion (31) and is matched with an anchor column in the hemispherical resonator; a plurality of first side grooves (312) communicating with the positioning hole (311) are provided at intervals in the circumferential direction on the side wall of the clamping portion (31); the first side grooves (312) extend upward to penetrate the top surface of the clamping portion (31), so that the clamping portion (31) forms a structure consisting of a plurality of clamping blocks connected at the bottom. The outer wall surface of the clamping portion (31) forms a first conical surface (313) that is larger at the top and smaller at the bottom. The top surface of the fixing seat (32) is provided with a receiving groove (321). The groove wall of the receiving groove (321) forms a second conical surface (322) that matches the first conical surface (313). The clamping portion (31) is clamped in the receiving groove (321) through the matching of the first conical surface (313) and the second conical surface (322), so that the plurality of clamping blocks enclose the positioning hole (311) and hold the inner anchor column of the hemispherical resonator tightly. The driving portion (39) passes through the fixing seat (32) and is connected to the driving assembly. The driving assembly is installed on the fixing seat (32) and is used to drive the clamp to move up and down until the clamping portion (31) extends from the accommodating groove (321) or is clamped into the accommodating groove (321).

9. The hemispherical resonator excitation and vibration-isolating device according to claim 8, characterized in that: The bottom surface of the fixing seat (32) is provided with a mounting hole (323), and the driving assembly includes a screw (35) and a gear (36). The gear (36) is mounted in the mounting hole (323) for vertical rotation, and the screw (35) is mounted in the mounting hole (323) for horizontal rotation and is connected to the gear (36) by transmission. The driving part (39) extends into the mounting hole (323), passes through the inner hole of the gear (36) and is threadedly connected to the gear (36). The fixing seat (32) is provided with a driving member (33) that is connected to the screw (35) for driving the screw (35) to rotate.

10. The hemispherical resonator excitation and vibration suppression device according to claim 9, characterized in that: A base (37) is fixed in the mounting hole (323), and the gear (36) is limited between the top surface of the mounting hole (323) and the base (37).

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