A shock-resistant protection component for gyroscopes

Abstract

This utility model discloses a gyroscope shock-resistant protection component in the field of gyroscope protection, including a base, a mounting base, guide rods, first springs, and a buffer mechanism. The base has guide holes extending along its thickness direction around its perimeter. The number of guide rods matches the number of guide holes. The gyroscope body is slidably connected to the guide rods through the guide holes, allowing the gyroscope body to be configured to move towards the mounting base under stress. Each first spring is sleeved on a corresponding guide rod. The buffer mechanism includes an elastic reset mechanism, two first wedges, and a second wedge. The axial movement of the second wedge along the guide rod can be synchronously converted into the axial movement of the first wedge perpendicular to the guide rod through an inclined plane. This utility model achieves efficient absorption and damping dissipation of impact energy within a limited axial thickness space by using the cooperation of the guide rods and guide holes to realize the axial displacement of the gyroscope body relative to the mounting base, which is then converted into the lateral movement of the first wedge perpendicular to the axial direction.

Description

Technical Field

[0001] This utility model relates to the field of gyroscope protection, specifically to a gyroscope shock-resistant protection component. Background Technology

[0002] As a core sensitive component of inertial navigation systems and precision measurement equipment, gyroscopes are widely used in aerospace, weapon guidance, unmanned systems, and high-end industrial monitoring. Because gyroscopes typically contain micron-sized sensitive structures or high-speed rotating rotors, they exhibit extremely high vulnerability to external mechanical shocks and high-frequency vibrations. Once subjected to instantaneous impacts exceeding their load-bearing capacity, they can easily lead to sensor signal distortion, accuracy drift, or even permanent damage to the physical structure.

[0003] In existing installation protection technologies, the traditional approach is to place rubber shock-absorbing pads or helical springs between the gyroscope base and the mounting bracket, utilizing the deformation of elastic elements to absorb impact energy. However, as application scenarios increasingly demand higher impact resistance from equipment, existing protective structures have revealed significant limitations: on the one hand, due to the compact installation space within precision equipment, especially the height limitation in the thickness direction, traditional vertical buffer strokes are often insufficient, making it difficult to completely dissipate the enormous impact kinetic energy within a very short distance; on the other hand, linear elastic elements in a single direction are prone to significant secondary rebound and prolonged reciprocating vibration after being subjected to severe impacts. This mechanical response, lacking effective damping and dissipation, severely interferes with the normal operation of the gyroscope. Utility Model Content

[0004] The purpose of this invention is to provide a shock-resistant protection component for gyroscopes, in order to solve the problem in the prior art where sensitive components are easily damaged when gyroscopes are subjected to severe axial impacts due to limited buffer space and single energy dissipation method.

[0005] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution:

[0006] A shock-resistant protection component for a gyroscope includes:

[0007] A base for fixed connection with the gyroscope body, the base having a through hole extending along the thickness direction;

[0008] Mounting base, the mounting base being parallel to the base;

[0009] The guide rods are matched in number with the number of guide holes. The guide rods are vertically fixed to one side of the mounting base. The gyroscope body is slidably connected to the guide rods through the guide holes, so that the gyroscope body is configured to move towards the mounting base when subjected to force.

[0010] The number of first springs matches the number of guide rods. Each first spring is sleeved on the corresponding guide rod. The first spring is located on the side of the base away from the mounting seat. The end of the guide rod has a limiting part to prevent the guide hole from axially disengaging from the guide rod. The two ends of the first spring abut against the base and the limiting part, respectively.

[0011] The buffer mechanism includes an elastic reset mechanism, two first wedges and two second wedges. The two first wedges are symmetrically connected to the side of the mounting base facing the base. The elastic reset mechanism is disposed between the two first wedges and always applies a repulsive force to the two first wedges, moving them away from each other. The two second wedges are respectively fixed at both ends of the side of the base facing the mounting base.

[0012] The two first wedges and the two second wedges are in one-to-one correspondence. Each first wedge and its corresponding second wedge are connected by a sliding engagement through an inclined plane. The sliding engagement of the first wedge and the second wedge is configured such that the axial movement of the second wedge along the guide rod can be synchronously converted into the axial movement of the first wedge perpendicular to the guide rod through the inclined plane.

[0013] Furthermore, a synchronization mechanism is provided between the two first wedges to maintain the synchronization of their movements. The synchronization mechanism includes:

[0014] The first link, the center point of the first link is axially connected to the mounting base;

[0015] The second link, there are two links, which are respectively set on both sides of the first link, and the two second links are distributed at a 180° angle about the rotation pivot of the first link;

[0016] The two ends of the first link are respectively hinged to the corresponding ends of the two second links, and the ends of the two second links away from the first link are respectively hinged to the middle of the corresponding first wedge.

[0017] Furthermore, the elastic reset mechanism consists of two sets of second springs, with each set of second springs having its two ends pressed against the opposite side of the two first wedges. The two sets of second springs are symmetrically arranged on both sides of the linear movement direction of the first wedges.

[0018] Furthermore, two symmetrically distributed telescopic rod structures are provided between the two first wedges, and two second springs are respectively sleeved on the corresponding telescopic rod structures. The two ends of the telescopic rod structures are respectively fixedly connected to the two first wedges.

[0019] Furthermore, the elastic reset mechanism consists of two integrally formed elastic feature parts and a bushing part. The two elastic feature parts are symmetrically connected on both sides of the bushing part, and the bushing part is sleeved on the rotating pivot. The ends of the two elastic feature parts away from the bushing part respectively abut against the corresponding first wedge.

[0020] The elastic feature is configured to have an elastic modulus in the linear motion direction of the two first wedges.

[0021] Furthermore, the mounting base is provided with two sets of symmetrically distributed bearing seats, each bearing seat is fixedly provided with a guide pin, the middle part of the guide pin is fixedly connected to the bearing seat, and the two ends of the guide pin extend to both sides and pass through the corresponding first wedge block.

[0022] Furthermore, a through hole is formed on the first wedge for the guide pin to pass through, and a self-lubricating graphite bushing for slidingly engaging the guide pin is embedded in the through hole.

[0023] Furthermore, a bottoming protection sleeve is fitted on the side of the base near the mounting seat. The bottoming protection sleeve is made of silicone and includes two annular sleeves and a buffer strip for connecting the two annular sleeves into one piece. The inner diameter of the annular sleeves is fitted with the guide rod with a clearance. There are several buffer strips and they are evenly distributed circumferentially. When the two annular sleeves are subjected to axial compression, the buffer strips can bend elastically outward along the radial direction of the guide rod.

[0024] The beneficial effects of this utility model are:

[0025] This invention achieves axial displacement of the gyroscope body relative to the mounting base through the cooperation of the guide rod and the guide hole. By utilizing the inclined sliding cooperation between the first and second wedges, the axial impact motion is synchronously converted into the lateral motion of the first wedge perpendicular to the axial direction. Within the limited axial thickness space, the converted lateral stroke, combined with the elastic reset mechanism and the frictional resistance between the wedges, achieves efficient absorption and damping dissipation of impact energy. Attached Figure Description

[0026] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the planar structure of an embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the buffer mechanism in an embodiment of the second spring and telescopic rod structure of this utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the buffer mechanism in an embodiment of the elastic feature portion and the bushing portion of this utility model;

[0030] Figure 4This is a schematic diagram of the planar structure of the bottom-contact protective sleeve according to an embodiment of the present utility model;

[0031] Figure 5 This is a planar sectional view of an embodiment of the present invention at the guide pin.

[0032] Figure 6 This is a cross-sectional view of the separation and limiting mechanism between the first and second wedge blocks of this utility model;

[0033] The labels in the figure represent the following: 1-Gyroscope body; 1a-Base; 1a1-Guide hole; 2-Mounting seat; 2a-Shaft seat; 3-Guide rod; 3a-Limiting part; 4-First spring; 5-First wedge; 5a-Through hole; 5a1-Self-lubricating graphite bushing; 5b-Inclined surface; 5b1-Dovetail groove; 6-Second wedge; 6a-Dovetail slide bar; 6a1-Rubber buffer block; 7-First connecting rod; 7a-Rotation pivot; 8-Second connecting rod; 9-Second spring; 10-Telescopic rod structure; 11-Elastic feature part; 12-Sleeve part; 13-Guide pin; 14-Bottoming protection sleeve; 14a-Annular sleeve part; 14b-Buffer strip. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] This embodiment provides a shock-resistant protection component for a gyroscope, which aims to solve the problem in the prior art where the sensitive components of a gyroscope are easily damaged due to limited buffer space and single energy dissipation when subjected to severe axial impact.

[0036] For details, see Figures 1 to 6 The shock-resistant protection components of this gyroscope include:

[0037] The base 1a is used to fix and connect with the gyroscope body 1. The base 1a is provided with a guide hole 1a1 that extends through the thickness direction.

[0038] Mounting base 2, which is parallel to base 1a;

[0039] The number of guide rods 3 matches the number of guide holes 1a1. The guide rods 3 are vertically fixed to one side of the mounting base 2. The gyroscope body 1 is slidably connected to the guide rods 3 through the guide holes 1a1, so that the gyroscope body 1 is configured to move towards the mounting base 2 when subjected to force.

[0040] The number of first springs 4 matches the number of guide rods 3. Each first spring 4 is sleeved on the corresponding guide rod 3. The first spring 4 is located on the side of the base 1a away from the mounting seat 2. The end of the guide rod 3 is formed with a limiting part 3a to prevent the guide hole 1a1 from axially disengaging from the guide rod 3. The two ends of the first spring 4 abut against the base 1a and the limiting part 3a respectively.

[0041] The buffer mechanism includes an elastic reset mechanism, two first wedges 5 and two second wedges 6. The two first wedges 5 are slidably connected to the side of the mounting base 2 facing the base 1a in a symmetrical state. The elastic reset mechanism is disposed between the two first wedges 5. The elastic reset mechanism always applies a repulsive force to the two first wedges 5, moving them away from each other. The two second wedges 6 are respectively fixed at both ends of the side of the base 1a facing the mounting base 2.

[0042] Among them, the two first wedges 5 and the two second wedges 6 correspond one-to-one. Each first wedge 5 and the corresponding second wedge 6 are in sliding engagement through the inclined surface 5b. The sliding engagement of the first wedge 5 and the second wedge 6 is configured such that the axial movement of the second wedge 6 along the guide rod 3 can be synchronously converted into the axial movement of the first wedge 5 perpendicular to the guide rod 3 through the inclined surface 5b.

[0043] In this scheme, when an external impact load is applied to the gyroscope body 1, the base 1a moves along the guide rod 3 toward the mounting seat 2 and compresses the first spring 4 for primary buffering. At the same time, the second wedge 6 fixed on the base 1a presses against the first wedge 5 on the mounting seat 2. The inclined surface 5b is used to decompose the axial impact force and convert it into the radial horizontal displacement of the first wedge 5. Thus, the energy is absorbed and dissipated through the elastic reset mechanism, and the impact kinetic energy in the limited axial thickness space is effectively transferred to the horizontal dimension for processing.

[0044] Furthermore, in this embodiment, an anti-detachment structure can be added between the inclined surfaces of the first wedge 5 and the second wedge 6. Specifically, a protruding dovetail slide 6a can be formed on one inclined surface, and a dovetail groove 5b1 can be formed on the other inclined surface for the dovetail slide 6a to slide and be embedded in. The length of the dovetail groove 5b1 is designed to be less than the length of the inclined surface 5b. Figure 6 As shown, this ensures that as the gyroscope body 1 moves away from the mounting base 2, the dovetail slider 6a will abut against the unconnected end of the dovetail groove 5b1, thus being physically limited to prevent complete separation. A rubber buffer block 6a1 can be added to the unconnected end of the dovetail groove 5b1 to cope with this extreme working condition.

[0045] In the basic operation of the above scheme, since the impact force may have a non-axial eccentric component, or the frictional resistance on the two first wedges 5 is not absolutely equal, it is easy to cause the two first wedges 5 to be out of sync, which in turn causes the base 1a to deflect, increasing the risk of the guide hole 1a1 and the guide rod 3 getting stuck.

[0046] To ensure high stability of the movement, a synchronization mechanism is provided between the two first wedges 5 to maintain the synchronization of their movements. The synchronization mechanism includes: a first connecting rod 7, the center point of which is axially connected to the mounting base 2; and two second connecting rods 8, which are respectively located on both sides of the first connecting rod 7, and the two second connecting rods 8 are distributed at a 180° angle about the rotation pivot 7a of the first connecting rod 7.

[0047] The two ends of the first link 7 are respectively hinged to the corresponding ends of the two second links 8, and the ends of the two second links 8 away from the first link 7 are respectively hinged to the middle of the corresponding first wedge block 5.

[0048] Through this mechanical linkage structure, the inward movement of any first wedge 5 will drive the first link 7 to rotate through the second link 8, and then force the other first wedge 5 to move symmetrically and synchronously through the second link 8 on the other side, thus maintaining the dynamic balance of the overall structure.

[0049] Since the high-frequency reciprocating motion of the first wedge 5 in the horizontal direction requires precise and low-friction guiding support, simply relying on the sliding of the mounting base 2 surface may cause the first wedge 5 to swing under load or cause buffer lag due to excessive friction. In order to further optimize the sliding quality, the mounting base 2 is provided with two sets of symmetrically distributed bearing seats 2a. Each bearing seat 2a is fixedly provided with a guide pin 13. The middle part of the guide pin 13 is fixedly connected to the bearing seat 2a, and the two ends of the guide pin 13 extend to both sides and pass through the corresponding first wedge 5.

[0050] Furthermore, in order to reduce wear and provide stable frictional damping without adding liquid lubricant, a through hole 5a is formed on the first wedge 5 for the guide pin 13 to pass through. A self-lubricating graphite bushing 5a1 for slidingly engaging the guide pin 13 is embedded in the through hole 5a. The cooperation between the graphite bushing and the guide pin 13 not only achieves precise linear guidance, but also dissipates some impact energy through solid friction.

[0051] It should be noted that when the dovetail slide bar 6a abuts against the rubber buffer block 6a1 at the end of the dovetail slide groove 5b1, the guide pin 13 still maintains the sliding engagement state with the self-lubricating graphite bushing 5a1 inside the through hole 5a.

[0052] Regarding the specific implementation of the elastic reset mechanism, in applications that pursue high reliability, the elastic reset mechanism can adopt two sets of second springs 9. The two ends of each set of second springs 9 are respectively pressed against the opposite side of the two first wedges 5, and the two sets of second springs 9 are symmetrically arranged on both sides of the linear movement direction of the first wedges 5.

[0053] To prevent the second spring 9 from lateral instability or bending deformation when subjected to rapid compression, two symmetrically distributed telescopic rod structures 10 are provided between the two first wedges 5. The two second springs 9 are respectively sleeved on the corresponding telescopic rod structures 10, and the two ends of the telescopic rod structures 10 are respectively fixedly connected to the two first wedges 5, thereby ensuring the axial consistency of the restoring force.

[0054] In applications where high integration and lightweighting of components are required, separate springs and telescopic rods would increase assembly complexity. To address this need, the elastic reset mechanism consists of two integrally formed elastic feature parts 11 and a bushing part 12. The two elastic feature parts 11 are symmetrically connected to both sides of the bushing part 12, which is fitted onto the rotating pivot 7a. The ends of the two elastic feature parts 11 away from the bushing part 12 respectively abut against the corresponding first wedge block 5. In this case, the elastic reset mechanism is offset from the synchronization mechanism in the direction perpendicular to the mounting base 2 to avoid physical interference between the two.

[0055] The elastic feature 11 is shaped to have an elastic modulus in the linear motion direction of the two first wedges 5. This integrated design reduces the number of parts while providing a smooth restoring force by utilizing the material's own elastic modulus.

[0056] Finally, considering that the displacement of the base 1a may exceed the limit stroke of the wedge mechanism under extreme overload conditions, in order to prevent secondary damage caused by hard collision between the base 1a and the mounting seat 2, a bottoming protection sleeve 14 is fitted on the side of the base 1a near the mounting seat 2. The bottoming protection sleeve 14 is made of silicone and includes two annular sleeve parts 14a and a buffer strip 14b for connecting the two annular sleeve parts 14a into one. The inner diameter of the annular sleeve parts 14a is clearance-fitted with the guide rod 3. The number of buffer strips 14b is several and they are evenly distributed along the circumference. When the two annular sleeve parts 14a are subjected to axial compressive force, the buffer strips 14b can be elastically bent outward along the radial direction of the guide rod 3.

[0057] When the base 1a approaches the end of its travel, the buffer strip 14b undergoes nonlinear instability and bending, generating a progressive buffering force, thereby flexibly absorbing the remaining energy in the final stage.

[0058] Preferably, in this embodiment, the elastic reset mechanism applies a horizontal elastic repulsive force to the two first wedges 5 that are far apart from each other, and the axial thrust converted by the inclined plane 5b is configured to be greater than the initial axial preload applied by all the first springs 4 to the base 1a.

[0059] The significance of this mechanical distribution relationship is that, in the initial state without external impact interference, the strong opening effect of the elastic reset mechanism forces the first wedge 5 to move outward, and then drives the second wedge 6 and the base 1a to move away from the mounting seat 2 along the guide rod 3 through the inclined plane 5b, until the base 1a touches the limit position formed by the first spring 4, which is the maximum axial stroke.

[0060] This design ensures that the protective components have a high activation threshold, effectively preventing the bottoming-out protective sleeve 14 from being directly triggered under normal micro-vibration or slight stress conditions, thereby ensuring the structural rigidity and measurement stability of the gyroscope under non-impact conditions.

[0061] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered as falling within the scope of protection of this utility model.

Claims

1. A shock protection assembly for a gyroscope, characterized in that include: The base (1a) is used to fix the gyroscope body (1) in place, and the base (1a) is provided with a guide hole (1a1) that runs through the thickness direction. Mounting base (2), which is parallel to the base (1a); The number of guide rods (3) matches the number of guide holes (1a1). The guide rods (3) are vertically fixed to one side of the mounting base (2). The gyroscope body (1) is slidably connected to the guide rods (3) through the guide holes (1a1) so that the gyroscope body (1) is configured to move towards the mounting base (2) when subjected to force. The number of first springs (4) matches the number of guide rods (3). Each first spring (4) is sleeved on the corresponding guide rod (3). The first spring (4) is located on the side of the base (1a) away from the mounting base (2). The end of the guide rod (3) is formed with a limiting part (3a) to prevent the guide hole (1a1) from axially disengaging from the guide rod (3). The two ends of the first spring (4) abut against the base (1a) and the limiting part (3a) respectively. The buffer mechanism includes an elastic reset mechanism, two first wedges (5) and two second wedges (6). The two first wedges (5) are slidably connected to the side of the mounting base (2) facing the base (1a) in a symmetrical state. The elastic reset mechanism is disposed between the two first wedges (5). The elastic reset mechanism always applies a repulsive force to the two first wedges (5) to move away from each other. The two second wedges (6) are respectively fixed at both ends of the side of the base (1a) facing the mounting base (2). Among them, the two first wedges (5) and the two second wedges (6) correspond one-to-one. Each first wedge (5) and the corresponding second wedge (6) are in sliding engagement through the inclined surface (5b). The sliding engagement of the first wedge (5) and the second wedge (6) is configured such that the axial movement of the second wedge (6) along the guide rod (3) can be synchronously converted into the axial movement of the first wedge (5) perpendicular to the guide rod (3) through the inclined surface (5b).

2. The gyroscope shock-resistant protection component according to claim 1, characterized in that, A synchronization mechanism is also provided between the two first wedges (5) to maintain the synchronization of their movements. The synchronization mechanism includes: The first link (7) is pivotally connected to the mounting base (2); The second link (8) has two components, which are respectively located on both sides of the first link (7), and the two second links (8) are distributed at an angle of 180° about the rotation pivot (7a) of the first link (7); Wherein, the two ends of the first connecting rod (7) are respectively hinged to the corresponding ends of the two second connecting rods (8), and the ends of the two second connecting rods (8) away from the first connecting rod (7) are respectively hinged to the middle of the corresponding first wedge (5).

3. The gyroscope shock-resistant protection component according to claim 1, characterized in that, The elastic reset mechanism consists of two sets of second springs (9). The two ends of each set of second springs (9) are respectively pressed against the opposite side of the two first wedges (5). The two sets of second springs (9) are symmetrically arranged on both sides of the linear movement direction of the first wedges (5).

4. The gyroscope shock-resistant protection component according to claim 3, characterized in that, Two symmetrically distributed telescopic rod structures (10) are provided between the two first wedges (5), and two second springs (9) are respectively sleeved on the corresponding telescopic rod structures (10). The two ends of the telescopic rod structures (10) are respectively fixedly connected to the two first wedges (5).

5. The gyroscope shock-resistant protection component according to claim 2, characterized in that, The elastic reset mechanism consists of two integrally formed elastic feature parts (11) and a bushing part (12). The two elastic feature parts (11) are symmetrically connected on both sides of the bushing part (12). The bushing part (12) is sleeved on the rotating pivot (7a). The ends of the two elastic feature parts (11) away from the bushing part (12) respectively abut against the corresponding first wedge (5). The elastic feature (11) is configured to have an elastic modulus in the linear motion direction of the two first wedges (5).

6. The gyroscope shock-resistant protection component according to claim 1, characterized in that, The mounting base (2) is provided with two sets of symmetrically distributed bearing seats (2a). Each bearing seat (2a) is fixedly provided with a guide pin (13). The middle part of the guide pin (13) is fixedly connected to the bearing seat (2a). The two ends of the guide pin (13) extend to both sides and pass through the corresponding first wedge (5).

7. The gyroscope shock-resistant protection component according to claim 6, characterized in that, The first wedge (5) has a through hole (5a) for the guide pin (13) to pass through, and a self-lubricating graphite bushing (5a1) for slidingly engaging the guide pin (13) is embedded in the through hole (5a).

8. The gyroscope shock-resistant protection component according to claim 1, characterized in that, The guide rod (3) is fitted with a bottom protection sleeve (14) on the side of the base (1a) near the mounting seat (2). The bottom protection sleeve (14) is made of silicone. The bottom protection sleeve (14) includes two annular sleeves (14a) and a buffer strip (14b) for connecting the two annular sleeves (14a) into one piece. The inner diameter of the annular sleeves (14a) is in clearance fit with the guide rod (3). The number of buffer strips (14b) is several and they are evenly distributed along the circumference. When the two annular sleeves (14a) are subjected to axial compression, the buffer strips (14b) can be elastically bent outward along the radial direction of the guide rod (3).

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