Passive damping device of shipborne observation device based on energy dissipation

Abstract

The utility model discloses a passive damping device for a shipborne observation device based on energy dissipation, which relates to a damping bracket and comprises buffering sheet metal parts distributed in the center of the inner side of a bottom frame groove part, and a preset distance is kept between the buffering sheet metal parts to form a buffering frame cavity; the first elastic pieces are distributed in the buffer frame cavity at equal intervals and are fixedly connected to the outer wall of the buffer sheet metal part and the inner wall of the bottom frame groove piece; second elastic pieces distributed along the diagonal line are fixedly installed on the top of the buffering sheet metal part, and the installation frame is fixedly connected to the ends of the multiple second elastic pieces. According to the utility model, the second elastic piece and the first elastic piece are combined to form buffering capability in three directions, so that the attitude sensor of the shipborne observation system can record correct attitude change data for subsequent compensation, and the precision of shipborne laser operation can be greatly improved.

Description

Technical Field

[0001] This utility model relates to a shock-absorbing bracket, specifically to a passive vibration reduction device for a shipborne observation device based on energy dissipation. Background Technology

[0002] Shipborne laser observation equipment is used relatively infrequently. Currently, it is mainly conducted through the integrated installation of land-based laser scanning equipment combined with auxiliary equipment. Related laser observation devices lack vibration reduction designs. Due to abnormal vibrations caused by the ship's own shaking and external wind and waves, which cannot be correctly identified by the attitude sensors of the shipborne observation system, and the lack of corresponding compensation mechanisms, the accuracy of measurement results is significantly reduced, making it difficult to provide results that meet specifications. Furthermore, shipborne vibration differs significantly from airborne vibration; therefore, existing airborne vibration reduction platforms cannot be directly applied to shipborne platforms. Utility Model Content

[0003] The purpose of this invention is to provide a passive vibration reduction device for shipborne observation equipment based on energy dissipation, in order to solve the above-mentioned problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A passive vibration damping device for a shipborne observation device based on energy dissipation includes buffer sheet metal parts distributed at the center of the inner side of the bottom frame groove, and the two parts maintain a predetermined distance to form a buffer frame cavity.

[0006] It also includes multiple first elastic members that are equidistantly distributed along the inside of the buffer frame cavity and fixedly connected to the outer wall of the buffer sheet metal part and the inner wall of the bottom frame groove part;

[0007] The top of the buffer sheet metal part is fixedly mounted with second elastic members distributed along the diagonal, and it also includes a mounting frame, which is fixedly connected to the ends of a plurality of second elastic members.

[0008] Preferably, a plurality of the first elastic elements are symmetrically distributed along the four adjacent sidewalls of the buffer sheet metal part.

[0009] Preferably, the first elastic element is an equidistant tension spring with an isosceles trapezoidal end section, the upper base of which is oriented toward the axis.

[0010] Preferably, the second elastic element is an elastic sheet metal part.

[0011] Preferably, the second elastic element is divided into symmetrically distributed C-shaped parts according to its structure, and the ports of the two C-shaped parts are distributed opposite to each other. The first C-shaped part is fixedly provided with a first horizontal part at one end relative to the buffer sheet metal part. An arc-shaped plate is fixedly provided at the end of the first horizontal part, and a vertical part is fixedly connected at the end of the arc-shaped plate.

[0012] Preferably, the first horizontal portion, the arc-shaped plate, and the vertical portion are provided with centrally distributed notches;

[0013] It also includes an elastic element, which is oval in shape with one end being a small end and the other end being a large end. The small end is open, with one end contacting and connecting with the first horizontal part and the first C-shaped part to form a whole, while the other end is fixedly connected to one end of the buffer sheet metal part opposite to the second C-shaped part.

[0014] Preferably, the end of the vertical part is fixedly provided with a second horizontal part that is welded to the mounting frame.

[0015] Preferably, the mounting frame is a rectangular frame with open outer walls on both sides, and an attitude sensor is fixedly installed inside it.

[0016] The mounting frame has GNSS mounting hollow rods that are symmetrically fixed to its outer walls on both sides and are flush with the top of the mounting frame.

[0017] Preferably, the top of the mounting frame is used to mount the lidar.

[0018] Preferably, the bottom frame groove, the buffer sheet metal part, and the mounting frame are all aluminum alloy sheet metal parts.

[0019] In the above technical solution, the passive vibration reduction device for shipborne observation equipment based on energy dissipation provided by this utility model has the following beneficial effects: the GNSS antenna, lidar, and attitude sensor are all mounted on the mounting frame, and the mounting frame is mounted on the buffer sheet metal part through the second elastic element, thereby enabling the mounting frame to have vertical buffering capability. Then, the buffer sheet metal part is connected to the bottom frame groove part through the first elastic element, thereby enabling the buffer sheet metal part to have horizontal buffering capability. By utilizing the cooperation between the second elastic element and the first elastic element, the buffering capability in three directions is eliminated, which can reduce abnormal vibrations caused by the ship itself or external wind and waves that cannot be correctly identified by the attitude sensor of the shipborne observation system. This ensures that the attitude sensor of the shipborne observation system can record the correct attitude change data and use it for subsequent compensation, which can significantly improve the accuracy of shipborne laser operations. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0022] Figure 2 Provided for the embodiments of this utility model Figure 1 A schematic diagram of the exploded structure;

[0023] Figure 3 A schematic diagram of the structure of the buffer sheet metal part, the first elastic part, and the second elastic part provided in the embodiment of this utility model;

[0024] Figure 4 A schematic diagram of the structure of the first elastic element provided in an embodiment of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the second elastic member provided in an embodiment of the present utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Bottom frame groove; 2. Buffer sheet metal part; 3. First elastic part; 4. Second elastic part; 41. C-shaped part; 42. First horizontal part; 43. Arc-shaped plate; 44. Vertical part; 45. Notched groove; 46. Elastic part; 47. Second horizontal part; 5. Mounting frame; 51. GNSS mounting hollow rod; 100. Buffer frame cavity. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0029] like Figure 1-5 As shown, a passive vibration reduction device for a shipborne observation device based on energy dissipation includes a buffer sheet metal part 2 distributed at the center of the inner side of the bottom frame groove part 1, and the two maintain a predetermined distance to form a buffer frame cavity 100.

[0030] It also includes multiple first elastic members 3 that are equidistantly distributed along the buffer frame cavity 100 and fixedly connected to the outer wall of the buffer sheet metal part 2 and the inner wall of the bottom frame groove part 1;

[0031] The top of the buffer sheet metal part 2 is fixedly mounted with second elastic members 4 distributed along the diagonal, and also includes a mounting frame 5, which is fixedly connected to the ends of the multiple second elastic members 4.

[0032] Specifically, the bottom frame groove 1, the buffer sheet metal part 2, and the mounting frame 5 are all aluminum alloy sheet metal parts.

[0033] Furthermore, the mounting frame 5 is a rectangular frame with open outer walls on both sides, and an attitude sensor is fixedly installed inside it. Additionally, heat dissipation slots are provided on the side walls of all six adjacent sides of the mounting frame 5.

[0034] Secondly, combining Figure 1 and Figure 2 As shown, GNSS mounting hollow rods 51, flush with the top of the mounting frame 5, are symmetrically fixed to the outer walls on both sides of the mounting frame 5. One end of each GNSS mounting hollow rod 51 is flush with the top of the mounting frame 5, while the other end extends to the outside of the mounting frame 5. The two GNSS mounting hollow rods 51 are distributed opposite each other at their flush ends.

[0035] Furthermore, the top of the aforementioned mounting frame 5 is used to mount a lidar.

[0036] It should be noted that the aforementioned GNSS antenna is fixedly mounted to the end of the GNSS mounting hollow rod 51 extending to the outside of the mounting frame 5 using screws. The lidar and attitude sensor are also mounted and fixed using screws.

[0037] In the aforementioned technology, the GNSS antenna, lidar, and attitude sensor are all mounted on the mounting frame 5, which is then mounted on the buffer sheet metal part 2 via the second elastic element 4, thus enabling the mounting frame 5 to provide vertical buffering capability. The buffer sheet metal part 2 is then connected to the bottom frame groove part 1 via the first elastic element 3, thereby enabling the buffer sheet metal part 2 to provide horizontal buffering capability. The second elastic element 4 and the first elastic element 3 work together to eliminate buffering capability in three directions. This can reduce abnormal vibrations caused by the ship itself or external wind and waves that cannot be correctly identified by the attitude sensors of the shipborne observation system, ensuring that the attitude sensors of the shipborne observation system can record accurate attitude change data for subsequent compensation, significantly improving the accuracy of shipborne laser operations.

[0038] As a further embodiment of this utility model, combined with Figure 2 and Figure 4 As shown, multiple first elastic elements 3 are symmetrically distributed along the four adjacent side walls of the buffer sheet metal part 2. Specifically, the first elastic element 3 is an equidistant tension spring, and the end cross-section is an isosceles trapezoid, with the upper base of the isosceles trapezoid facing the axis.

[0039] Specifically, the first elastic element 3, symmetrically distributed on its four sidewalls, evenly disperses the impact force circumferentially, avoiding localized stress concentration and significantly improving the buffer structure's resistance to eccentric loading. This is particularly suitable for multi-directional random vibration scenarios, reducing the risk of resonance. Secondly, the end section of the first elastic element 3 is an isosceles trapezoid, with its upper base facing the axis, creating a wedge effect and reducing the contact surface pressure by approximately 25%. When under pressure, the trapezoidal slope induces a tangential component force on the contact surface, forming a self-locking effect and preventing fretting wear between the spring end and the sheet metal part.

[0040] As another embodiment further provided by this utility model, combined with Figure 3 and Figure 5As shown, the second elastic element 4 is an elastic sheet metal part.

[0041] Furthermore, the second elastic member 4 is divided into symmetrically distributed C-shaped members 41 according to the structure, and the ports of the two C-shaped members 41 are distributed relative to each other. The first C-shaped member 41 is fixedly provided with a first horizontal part 42 at one end relative to the buffer sheet metal member 2. An arc-shaped plate 43 is fixedly provided at the end of the first horizontal part 42, and a vertical part 44 is fixedly connected at the end of the arc-shaped plate 43.

[0042] The first horizontal part 42, the arc-shaped plate 43 and the vertical part 44 are provided with centrally distributed notches 45; it also includes an elastic member 46, which is oval in shape, with one end being a small end and the other end being a large end. The small end is open, and one end of it is in contact with the first horizontal part 42 and the first C-shaped member 41 to form an integral part, while the other end is fixedly connected to one end of the second C-shaped member 41 relative to the buffer sheet metal member 2.

[0043] Secondly, a second horizontal part 47, which is welded to the mounting frame 5, is fixedly provided at the end of the vertical part 44.

[0044] Specifically, the two C-shaped components 41 facing each other form a "double-arch" elastic unit, which undergoes reverse bending deformation under axial load. The central notch 45 on the first horizontal part 42, the arc-shaped plate 43, and the vertical part 44 forms a predetermined deformation weak zone. During the impact, the notch guides the stress concentration factor to decrease to 1.3 (compared to 2.1 in the conventional structure), while absorbing 25%-30% of the impact energy through the plastic hinge effect at the notch.

[0045] Secondly, the elastic element 46 of the oval-shaped elastic element configuration uses a tapered cross section (3mm diameter at the small end and 8mm diameter at the large end) to achieve a strain energy gradient distribution. Dynamic compression tests show that this configuration produces a radial expansion effect under axial compression.

[0046] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A passive vibration reduction device for shipborne observation equipment based on energy dissipation, characterized in that, Includes a buffer sheet metal part (2) located at the center of the inner side of the bottom frame groove (1), and the two are kept at a predetermined distance to form a buffer frame cavity (100). It also includes multiple first elastic members (3) that are equidistantly distributed along the buffer frame cavity (100) and fixedly connected to the outer wall of the buffer sheet metal part (2) and the inner wall of the bottom frame groove part (1); The top of the buffer sheet metal part (2) is fixedly mounted with a second elastic element (4) distributed along the diagonal, and also includes a mounting frame (5) which is fixedly connected to the ends of a plurality of the second elastic elements (4).

2. The passive vibration reduction device for a shipborne observation device based on energy dissipation according to claim 1, characterized in that, Multiple first elastic elements (3) are symmetrically distributed along the four adjacent sidewalls of the buffer sheet metal element (2).

3. The passive vibration reduction device for a shipborne observation device based on energy dissipation according to claim 1, characterized in that, The first elastic element (3) is specifically an equidistant tension spring, and the end section is an isosceles trapezoid, with the upper base of the isosceles trapezoid facing the axis.

4. The passive vibration reduction device for a shipborne observation device based on energy dissipation according to claim 1, characterized in that, The second elastic element (4) is an elastic sheet metal part.

5. A passive vibration reduction device for a shipborne observation device based on energy dissipation according to claim 4, characterized in that, The second elastic member (4) is divided into symmetrically distributed C-shaped members (41) according to the structure, and the ports of the two C-shaped members (41) are distributed relative to each other. The first C-shaped member (41) is fixedly provided with a first horizontal part (42) at one end relative to the buffer sheet metal part (2). An arc-shaped plate (43) is fixedly provided at the end of the first horizontal part (42), and a vertical part (44) is fixedly connected at the end of the arc-shaped plate (43).

6. A passive vibration reduction device for a shipborne observation device based on energy dissipation according to claim 5, characterized in that, The first horizontal part (42), the arc-shaped plate (43) and the vertical part (44) are provided with centrally distributed notches (45); It also includes an elastic element (46), which is oval in shape, with one end being a small end and the other end being a large end. The small end is open, with one end contacting and connecting with the first horizontal part (42) and the first C-shaped part (41) to form a whole, while the other end is fixedly connected to one end of the second C-shaped part (41) relative to the buffer sheet metal part (2).

7. A passive vibration reduction device for a shipborne observation device based on energy dissipation according to claim 5, characterized in that, The end of the vertical part (44) is fixedly provided with a second horizontal part (47) that is welded to the mounting frame (5).

8. The passive vibration reduction device for a shipborne observation device based on energy dissipation according to claim 1, characterized in that, The mounting frame (5) is a rectangular frame with open outer walls on both sides, and an attitude sensor is fixedly installed inside it. The mounting frame (5) has GNSS mounting hollow rods (51) that are flush with the top of the mounting frame (5) symmetrically fixed on the outer walls on both sides.

9. A passive vibration reduction device for a shipborne observation device based on energy dissipation according to claim 1, characterized in that, The top of the mounting frame (5) is used to mount the lidar.

10. A passive vibration reduction device for a shipborne observation device based on energy dissipation according to claim 1, characterized in that, The bottom frame groove (1), the buffer sheet metal part (2) and the mounting frame (5) are all aluminum alloy sheet metal parts.

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