Underwater attitude self-stabilizing mechanical shock absorbing mechanism
By using an underwater attitude self-stabilizing mechanical shock absorption mechanism, which utilizes the mechanical structure of a column, a ball-head electronic compartment, and a double-ball-head spring rod, the problem of attitude instability of underwater detection equipment is solved, achieving attitude self-stabilization without power, reducing costs and saving resources.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI MARINE ELECTRONIC EQUIP RES INST (NO 726 RES INST OF CHINA STATE SHIPBUILDING CORP)
- Filing Date
- 2023-12-22
- Publication Date
- 2026-07-31
AI Technical Summary
Existing underwater detection equipment struggles to maintain stable attitude under the influence of ocean currents and surges, especially on muddy or rocky bottoms, preventing it from acquiring the necessary information. Furthermore, existing attitude adjustment methods are costly and resource-intensive.
An underwater attitude self-stabilizing mechanical shock absorption mechanism is adopted. Through the mechanical structure of a column, ball-head electronic chamber, counterweight pendulum, and double ball-head spring rod, attitude self-stabilization without electricity is achieved. The column spring provides shock absorption, the double ball-head spring rod provides damping shock absorption, and the counterweight provides stabilization.
It achieves attitude self-stabilization of the detection equipment under underwater unpowered conditions, reduces costs and saves resources, has a simple structure, and is suitable for underwater platforms.
Smart Images
Figure CN117803804B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of marine engineering technology, and more specifically, to an underwater attitude self-stabilizing mechanical shock absorption mechanism. Background Technology
[0002] In marine engineering, some detection equipment, such as vector hydrophones, underwater cameras, and sonar, needs to maintain stable attitude on the seabed. These devices are sometimes mounted on underwater buoys, bottom-mounted moorings, or ROVs and UUVs. However, these platforms are affected by ocean currents and waves. On muddy or sandy bottoms, the bottom of the mooring platform may sink over time, causing the platform to tilt. On rocky bottoms, it is even more difficult to control the platform's attitude upon contact with the seabed, resulting in the detection equipment failing to detect and collect the necessary underwater information. Active attitude adjustment methods using attitude sensor feedback combined with servo motor drive are not only costly and occupy limited space and power in the underwater instrument compartment, but their self-stabilizing effect is also not ideal.
[0003] Therefore, the inventors believe that there is a need to provide an underwater attitude self-stabilizing mechanical shock absorption mechanism that can maintain the attitude of a certain detection device in a certain direction by means of machinery at the bottom of the water without the need for electricity. Summary of the Invention
[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide an underwater attitude self-stabilizing mechanical shock absorption mechanism.
[0005] According to the present invention, an underwater attitude self-stabilizing mechanical shock absorption mechanism includes: a detection device, a column, a ball-head electronic housing, a counterweight pendulum, a double-ball-head spring rod, an upper cover plate, and a lower fixing ring. The detection device is installed on the top of the upper cover plate, the ball-head electronic housing is installed on the bottom of the upper cover plate, the counterweight pendulum is connected to the bottom of the ball-head electronic housing, and multiple vertical columns are movably installed around the ball-head electronic housing. Each column is provided with a column spring. The upper cover plate and the lower fixing ring are both horizontally arranged and movably connected by multiple double-ball-head spring rods.
[0006] Preferably, it also includes an underwater platform, the lower fixing ring is fastened to the underwater platform, and the bottom of the column is connected to the underwater platform.
[0007] Preferably, the detection device includes a vector hydrophone and a sound-transparent cover, wherein the vector hydrophone is installed in a sealed chamber formed by the sound-transparent cover and the upper cover plate.
[0008] Preferably, a sealed chamber is formed between the ball-shaped electronic compartment and the upper cover plate, and an attitude sensor plate is installed inside the sealed chamber.
[0009] Preferably, the ball-head electronic compartment is equipped with left and right ball-head clamps, and the ball-head electronic compartment can swing freely within a three-dimensional space of ±25°.
[0010] Preferably, the left and right ball joint clamps are provided with annular grooves, and the annular grooves are filled with lubricant.
[0011] Preferably, the two columns are respectively disposed at both ends of the left and right ball-head clamps, the lower fixing ring is disposed below the upper cover plate, and the left and right ball-head clamps are disposed inside the lower fixing ring. The columns do not contact the counterweight swing block, the double ball-head spring rod, or the lower fixing ring.
[0012] Preferably, the top of the counterweight pendulum is connected to the ball-head electronic compartment via a connecting rod.
[0013] Preferably, the four double-ball-head spring rods are evenly and symmetrically arranged on the periphery of the upper cover plate. Each double-ball-head spring rod includes: an upper ball-head wedge, an upper ball-head rod, a sleeve, a lower ball-head rod, and a lower ball-head wedge. The upper ball-head wedge is installed at the bottom of the upper cover plate, and the upper ball-head rod is embedded in the hemispherical groove of the upper ball-head wedge and is capable of omnidirectional rotation. The lower ball-head wedge is installed at the top of the lower fixing ring, and the lower ball-head rod is embedded in the hemispherical groove of the lower ball-head wedge and is capable of omnidirectional rotation.
[0014] The sleeve contains a first spring and a second spring. The lower end of the upper ball joint is connected to a lower bushing. The first spring is sleeved on the upper ball joint, and the two ends of the second spring are respectively connected to the lower bushing and the lower ball joint.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] This invention uses a column to support the detection equipment, and a column spring on the column shaft to provide vertical shock absorption. The spring inside the double ball-head spring rod provides damping and shock absorption and returns to its original position after swinging when supporting the detection equipment. The counterweight pendulum at the bottom of the ball-head electronic compartment provides counterweight stabilization. By adopting a purely mechanical structure, no additional power is required, which can simultaneously achieve self-stabilization of the detection equipment and maintain its attitude underwater without power. Attached Figure Description
[0017] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0018] Figure 1 This is an isometric view of the underwater attitude self-stabilizing mechanical shock absorption mechanism, which is the main feature of this invention.
[0019] Figure 2This is a schematic diagram illustrating the underwater attitude self-stabilizing mechanical shock absorption mechanism and the self-stabilization of the platform, which are the main features of this invention.
[0020] Figure 3 This is a cross-sectional view of the underwater attitude self-stabilizing mechanical shock absorption mechanism, which is the main feature of this invention.
[0021] Figure 4 This is a structural diagram illustrating the main features of the double-ball-head spring rod of this invention;
[0022] Figure 5 This is a cross-sectional view of the double-ball-head spring rod, which is the main feature of this invention.
[0023] As shown in the figure:
[0024] Vector hydrophone 1 Sound-transparent cover 2 Column 3
[0025] 4. Column spring; 5. Ball head electronic compartment; 6. Counterweight swing block.
[0026] 7 Connecting rod, 8 Left and right ball joint clamps, 9 Double ball joint spring rod
[0027] Upper cover plate 10, lower fixing ring 11, attitude sensor plate 12
[0028] Top of the clubhead wedge 13, top of the clubhead 14, end cap 15
[0029] Sleeve 16, Lower club head 17, Lower club head wedge 18
[0030] 19 Cover plate, 20 Dynamic seal ring, 21 Upper bushing
[0031] First spring 22, lower bushing 23, second spring 24 Detailed Implementation
[0032] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.
[0033] like Figure 1 and 2As shown, an underwater attitude self-stabilizing mechanical shock absorption mechanism according to the present invention includes: a detection device, a column 3, a ball-head electronic chamber 5, a counterweight pendulum 6, a double ball-head spring rod 9, an upper cover plate 10, and a lower fixing ring 11. The detection device is installed on the top of the upper cover plate 10, the ball-head electronic chamber 5 is installed on the bottom of the upper cover plate 10, the bottom of the ball-head electronic chamber 5 is connected to the counterweight pendulum 6, and multiple vertical columns 3 are movably installed around the ball-head electronic chamber 5. Each column 3 is provided with a column spring 4. The upper cover plate 10 and the lower fixing ring 11 are both horizontally arranged and movably connected by multiple double ball-head spring rods 9.
[0034] This application discloses a self-maintaining mechanism for underwater information monitoring and data acquisition. It maintains the attitude of a detection device in a specific direction mechanically underwater, without the need for electricity. The detection device is typically mounted on an underwater platform 25, with a lower fixing ring 11 securely connected to the platform 25. The bottom of a column 3 is connected to the platform 25. The column 3 supports the detection device, and the column spring 4 on the column 3's shaft provides vertical shock absorption. Multiple double-ball-head spring rods 9 are connected in parallel between the upper cover plate 10 and the lower fixing ring 11, and are evenly and symmetrically arranged. Each double-ball-head spring rod 9 contains a spring, which, when supporting the detection device, provides damping, shock absorption, and return to its original position after oscillation.
[0035] The detection equipment includes a vector hydrophone 1 and a sound-transparent enclosure 2. The vector hydrophone 1 is installed inside a sealed chamber formed by the sound-transparent enclosure 2 and the upper cover plate 10. The vector hydrophone 1 can also be replaced with other detection equipment, such as sonar or underwater cameras. The sound-transparent enclosure 2 is integrally molded from polyurethane material. The sealed chamber formed by the upper cover plate 10 and the sound-transparent enclosure 2 is filled with oil to ensure internal and external pressure balance and to protect and dampen the detection equipment.
[0036] like Figure 3 As shown, a sealed chamber is formed between the ball-head electronic compartment 5 and the upper cover plate 10. An attitude sensor plate 12 is installed in the sealed chamber, which measures the attitude of the vector hydrophone 1 underwater.
[0037] The ball-head electronic housing 5 is equipped with left and right ball-head clamps 8, which hold the ball-head electronic housing 5 in place, allowing it to swing freely within a three-dimensional space of ±25°. The left and right ball-head clamps 8 have annular grooves inside, filled with lubricant; that is, lubricant is applied to the grooves before the left and right ball-head clamps 8 are fitted into the ball-head electronic housing 5.
[0038] Two uprights 3 are respectively set at both ends of the left and right ball head clamps 8, and the lower fixing ring 11 is set below the upper cover plate 10. The left and right ball head clamps 8 are set inside the ring of the lower fixing ring 11. The uprights 3 do not contact the counterweight swing block 6, the double ball head spring rod 9, or the lower fixing ring 11.
[0039] The top of the counterweight pendulum 6 is connected to the ball head electronic compartment 5 via the connecting rod 7, which serves to stabilize the counterweight.
[0040] like Figure 4 and 5 As shown, preferably, four double-ball-head spring rods 9 are evenly and symmetrically arranged on the periphery of the upper cover plate 10. In practical applications, the number of double-ball-head spring rods 9 can be adjusted. Each double-ball-head spring rod 9 includes: an upper ball-head wedge 13, an upper ball-head rod 14, a cover 15, a sleeve 16, a lower ball-head rod 17, and a lower ball-head wedge 18. The upper ball-head wedge 13 is installed at the bottom of the upper cover plate 10, and the upper ball-head rod 14 is embedded in the hemispherical groove of the upper ball-head wedge 13 and can rotate omnidirectionally. The lower ball-head wedge 18 is installed at the top of the lower fixing ring 11, and the lower ball-head rod 17 is embedded in the hemispherical groove of the lower ball-head wedge 18 and can rotate omnidirectionally. A first spring 22 and a second spring 24 are provided inside the sleeve 16. The lower end of the upper ball-head rod 14 is connected to a lower bushing 23. The first spring 22 is sleeved on the upper ball-head rod 14, and the two ends of the second spring 24 are connected to the lower bushing 23 and the lower ball-head rod 17, respectively.
[0041] Specifically, the upper ball joint rod 14 passes through the end cap 15, cover plate 19, dynamic seal ring 20, and upper bushing 21, and its lower end is fixedly connected to the lower bushing 23. A first spring 22 is provided between the upper bushing 21 and the lower bushing 23, and the lower bushing 23 is fixedly connected to a second spring 24. When the upper ball joint rod 14 is compressed, the first spring 22 remains stationary, while the second spring 24 is compressed; when the upper ball joint rod 14 is stretched, the first spring 22 is compressed, while the second spring 24 is stretched.
[0042] The self-stabilizing principle of this application is as follows: Figure 2 As shown, when the underwater platform 25 is impacted by ocean currents or tilts on the bottom, the lower fixing ring 11, being fixedly installed to the platform, tilts accordingly. This causes one or two double-ball-head spring rods 9 in a certain direction to be compressed, while the other three or two double-ball-head spring rods 9 are stretched. Meanwhile, the vector hydrophone 1, due to the universal joint between the ball-head electronic housing 5 and the left and right ball-head clamps 8, as well as the effect of the counterweight pendulum 6, maintains a nearly vertical detection posture. The column spring 4 on the axis of the column 3 acts as a shock absorber.
[0043] This application presents a zero-power, purely mechanical structure that requires no additional power. It is simple in structure and low in cost, and can fully meet the requirements of certain underwater detection devices for detection attitude and self-stabilization. It can simultaneously achieve self-stabilization of the detection device and maintain its attitude underwater without power.
[0044] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0045] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.
Claims
1. An underwater attitude self-stabilizing mechanical shock absorbing mechanism, characterized by, include: The device includes a detection device, a column (3), a ball-head electronic compartment (5), a counterweight swing block (6), a double ball-head spring rod (9), an upper cover plate (10), and a lower fixing ring (11). The detection device is installed on the top of the upper cover plate (10), the ball-head electronic compartment (5) is installed on the bottom of the upper cover plate (10), the counterweight swing block (6) is connected to the bottom of the ball-head electronic compartment (5), the ball-head electronic compartment (5) is equipped with left and right ball-head clamps (8), the ball-head electronic compartment (5) can swing, and two vertical columns (3) are movably installed around the ball-head electronic compartment (5). The two columns (3) are respectively set at the two ends of the left and right ball-head clamps (8). Each column (3) is equipped with a column spring (4). The upper cover plate (10) and the lower fixing ring (11) are both horizontally set and movably connected by multiple double ball-head spring rods (9). It also includes an underwater platform (25), the lower fixing ring (11) is fastened to the underwater platform (25), and the bottom of the column (3) is connected to the underwater platform (25).
2. The underwater attitude self-stabilizing mechanical shock absorption mechanism as described in claim 1, characterized in that, The detection device includes a vector hydrophone (1) and a sound-transparent cover (2). The vector hydrophone (1) is installed in a sealed chamber formed by the sound-transparent cover (2) and the upper cover plate (10).
3. The underwater attitude self-stabilizing mechanical shock absorption mechanism as described in claim 1, characterized in that, A sealed chamber is formed between the ball-head electronic compartment (5) and the upper cover plate (10), and an attitude sensor plate (12) is installed in the sealed chamber.
4. The underwater attitude self-stabilizing mechanical shock absorption mechanism as described in claim 1, characterized in that, The ball-shaped electronic compartment (5) can swing freely within a three-dimensional space of ±25°.
5. The underwater attitude self-stabilizing mechanical shock absorption mechanism as described in claim 1, characterized in that, The left and right ball head clamps (8) are provided with annular grooves inside, and the annular grooves are filled with lubricant.
6. The underwater attitude self-stabilizing mechanical shock absorption mechanism as described in claim 1, characterized in that, The lower fixing ring (11) is located below the upper cover plate (10), and the left and right ball head clamps (8) are located inside the ring of the lower fixing ring (11). The column (3) does not contact the counterweight swing block (6), the double ball head spring rod (9), or the lower fixing ring (11).
7. The underwater attitude self-stabilizing mechanical shock absorption mechanism as described in claim 1, characterized in that, The top of the counterweight pendulum (6) is connected to the ball head electronic compartment (5) via a connecting rod (7).
8. The underwater attitude self-stabilizing mechanical shock absorption mechanism as described in claim 1, characterized in that, The four double ball-head spring rods (9) are evenly and symmetrically arranged on the periphery of the upper cover plate (10). The double ball-head spring rods (9) include: upper ball-head wedge (13), upper ball-head rod (14), sleeve (16), lower ball-head rod (17) and lower ball-head wedge (18). The upper ball head wedge (13) is installed at the bottom of the upper cover plate (10), and the upper ball head rod (14) is embedded in the hemispherical groove of the upper ball head wedge (13) and can rotate in all directions; The lower ball head wedge (18) is installed on the top of the lower fixing ring (11), and the lower ball head rod (17) is embedded in the hemispherical groove of the lower ball head wedge (18) and can rotate in all directions.
9. The underwater attitude self-stabilizing mechanical shock absorption mechanism as described in claim 8, characterized in that, The sleeve (16) is provided with a first spring (22) and a second spring (24). The lower end of the upper ball head rod (14) is connected to a lower bushing (23). The first spring (22) is sleeved on the upper ball head rod (14). The two ends of the second spring (24) are respectively connected to the lower bushing (23) and the lower ball head rod (17).