Anti-collision shell device of nutritive salt in-situ analyzer

Abstract

The invention discloses an anti-collision shell device of a nutritive salt in-situ analyzer. The device comprises a cap, a middle supporting piece, a spine component, a hammering piece, an opening and closing limiting piece, an excitation piece, an upper supporting plate, a pulling piece, a swinging piece, a vibration reduction piece and an inner cage. The inner side of the middle supporting piece is connected with an inner cage, and the inner cage is provided with an analyzer through a vibration reduction piece. An opening and closing limiting piece and an excitation piece are arranged at the top of the upper supporting plate in the cap. When the swing of the swing part exceeds a threshold value due to external impact, the excitation part acts to drive the opening and closing limiting part to be unfolded, and the hammering part is released. The driving hammer piece falls down to press the pulling piece, shear pins in the spine components are synchronously snapped off through the linkage mechanism, the pre-compressed spines rapidly pop out under the action of the springs, and active deterrence and physical protection are formed. Meanwhile, the multi-dimensional vibration reduction piece on the inner cage can effectively buffer impact transmitted to the analyzer. Pure mechanical linkage is adopted, electric power is not needed, and reliability is high.

Description

Technical Field

[0001] This invention relates to the field of marine observation equipment technology, and specifically to a shockproof housing device for an in-situ nutrient analyzer. Background Technology

[0002] Nutrient in-situ analyzers are key equipment for long-term, fixed-point, and profiling marine chemical observations. They can simultaneously measure seawater nitrates, nitrites, ammonium salts, reactive phosphates, and reactive silicates. Because they are deployed at the sea surface or thousands of meters deep on the seabed, they face long-term challenges from complex biological and physical environments. Impacts from fishing vessels, schools of fish, marine mammals, or the platform itself during profiling measurements are among the main causes of equipment damage and data interruption. Current technologies primarily rely on passive reinforcement for equipment protection, such as using heavy metal frames or sacrificial buffer layers. While these methods provide some protection, they have significant shortcomings: firstly, their enormous weight increases the difficulty and cost of deployment and retrieval; secondly, passively withstanding impacts fails to effectively deter continuous disturbances.

[0003] Therefore, there is an urgent need for a collision avoidance device that can proactively detect threats and trigger reliable protective actions, while also being lightweight and ensuring long-term reliability, to protect high-value in-situ analyzers and ensure their normal operation. This will provide technical support for my country's deep-sea scientific expeditions and research, and provide reliable data for environmental assessments of deep-sea mining, water quality monitoring in deep-sea aquaculture, and scientific research on deep-sea biogeochemical cycles. Summary of the Invention

[0004] The purpose of this invention is to provide a shockproof housing device for an in-situ nutrient analyzer.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A shockproof outer shell device for an in-situ nutrient analyzer includes a cap, a central support, a spiked component, a hammer, an opening and closing limiting component, an excitation component, an upper support plate, a pulling component, a swing component, a vibration damping component, and an inner cage.

[0006] The central support member has a circumferential array of spiked components extending downwards, with the inner cage fixedly connected to the inner side of each spiked component. The inner wall of the inner cage has a circumferential array of vibration dampers, which are detachably connected to the analyzer. The central support member has a detachable cap at its top. An upper support plate is coaxially fixed inside the cap, with the pendulum hinged to the bottom center of the upper support plate. An opening / closing limiting member is fixedly fixed to the top center of the upper support plate. A hammer is slidably mounted on the top of the opening / closing limiting member, connected to the cap. A pulling member is slidably mounted inside the opening / closing limiting member, hinged to the upper support plate, with its end connected to the spiked components. The top of the upper support plate has a circumferential array of excitation components, one end of which is connected to the opening / closing limiting member, and the other end to the pendulum.

[0007] Its working principle is as follows: When the device is subjected to an external impact, the pendant sways due to inertia. When its swaying angle reaches a preset threshold, it will drive the actuating element to move. The actuating element further drives the opening and closing limiting element from a closed state to an open state. After being opened, the opening and closing limiting element releases the constraint on the hammer element, and the hammer element moves downward under its own driving force (such as spring force), pressing the pulling element. After the pulling element is subjected to force, the action is transmitted to all the spike components through the traction mechanism (such as traction rope one), ultimately triggering the spikes to pop out synchronously, forming active protection.

[0008] Furthermore, the opening and closing limiting component includes an upper rotating plate, a limiting plate, and a support cylinder. A coaxial support cylinder is fixedly mounted on the top of the upper support plate. The top sidewall of the support cylinder has two radially symmetrical through-holes, and the top has two symmetrically connected limiting grooves. The top center of the upper rotating plate has two symmetrically arranged arc-shaped limiting holes. The top of the limiting plate has a limiting post, and the limiting plate slides within the two limiting holes, with the limiting post located within the corresponding arc-shaped limiting hole and limiting groove. By rotating the upper rotating plate in both directions, the two limiting plates can be moved closer or further apart, thus switching between the opening and closing states.

[0009] Furthermore, the hammer component includes a compression spring and a hammer. A guide groove is provided along the axis inside the cap, and the hammer is placed within the guide groove. The compression spring is positioned between the inner wall of the guide groove and the hammer. The bottom of the hammer abuts against two limiting plates. When the two limiting plates approach each other, they jointly support the hammer, and the compression spring is in a compressed, energy-storing state; when the limiting plates move away from each other, the support point disappears, and the hammer falls rapidly under the drive of the compression spring.

[0010] Furthermore, the pulling component includes a sliding plate, a second compression spring, and a lever. The outer wall of the support cylinder has a circumferential array of vertical through slots. Several levers are radially slidably connected to the outer wall of the sliding plate, passing through the through slots and extending outwards. The levers are hinged at their middle parts to the upper support plate, and their other ends are connected to the spike component via a traction rope. The bottom of the support cylinder has a large port, within which a sliding plate is slidably mounted, and a second compression spring is located at the bottom of the sliding plate. The stepped structure formed by the large port and the upper space is used to limit excessive upward sliding of the sliding plate. Normally, the limiting plates are close to each other, and the sliding plate is at its highest point; upon triggering, the hammer presses down on the sliding plate, causing the sliding plate to rotate and thus pull the first traction rope.

[0011] Furthermore, the spike component includes a support column, a spike body, a first limiting plate, a third compression spring, a second limiting plate, a shearing pin, and a third limiting plate. The outer wall of the support column has several vertically arrayed I-shaped openings, and the top has a feed port connecting the larger inner ends of all the I-shaped openings. The spike body slides at the smaller end of the I-shaped opening, and its body and non-spiky end are respectively provided with the first and second limiting plates, and fitted with the third compression spring. The shearing pin is fixed to the side of the second limiting plate near the feed port, and a traction rope is fitted on it, with a third limiting plate at its end. The third limiting plate is larger than the I-shaped opening and is normally stuck inside the feed port, preventing the spike body from ejecting. When the tension of the traction rope exceeds a threshold and breaks the shearing pin, the constraint is released, and the third compression spring drives the spike body to eject at high speed.

[0012] Furthermore, the actuating element includes a horizontal column, a ball bearing, a compression spring four, a baffle plate, a compression spring five, a limiting chamber, and a vertical column. A vertical column is fixed to the bottom of the horizontal column. Several receiving blocks are provided on the outer wall of the upper rotating plate, each receiving block having a tangential receiving groove on one side. A driving cavity is provided inside the vertical column, with one end opening coaxial with the receiving groove, and the other end containing the compression spring four and the ball bearing. A limiting chamber is provided at the bottom of the horizontal column, containing the compression spring five and a vertically sliding baffle plate. The baffle plate limits the ball bearing, keeping the compression spring four compressed. The horizontal column and the receiving blocks are not fixedly connected.

[0013] Furthermore, the pendulum includes a pendulum and traction ropes. The pendulum ball is hinged to the bottom of the upper support plate, and several traction ropes are connected to its bottom, extending to the bottom of the baffles of each actuating element. When the pendulum swings to a threshold angle, the traction ropes are tightened, causing the baffles to move downward and releasing the marbles. The marbles are ejected at high speed under the action of the compression spring, impacting the receiving groove and thus driving the upper rotating plate to rotate.

[0014] Furthermore, the vibration damping component includes a vertical rod, a connecting plate, a compression spring six, a compression spring seven, and a movable block. The inner wall of the inner cage has a vertical vibration damping groove, with limiting blocks on the inner sides of its upper and lower ends. A movable block is located at each end of the vertical rod, vertically positioned within the vibration damping groove. Two connecting plates slide on the vertical rod for connecting the analyzer, and a compression spring six is ​​fitted onto the vertical rod between the connecting plates and the movable blocks. A compression spring seven is located between the radially outer side of the movable block and the inner wall of the vibration damping groove, and the movable block can move radially. This design achieves multi-directional buffering of the analyzer through a combination of radial and axial springs.

[0015] Furthermore, it also includes an outer cage plate and annular reinforcing ribs. All the spiked components are connected by several vertically arrayed annular reinforcing ribs to form several spaces, within which the outer cage plate is installed to prevent small organisms from entering.

[0016] Furthermore, it also includes a base. All the spiked components are detachably connected to the base at the bottom, and the base has a grid hole in the center to ensure that external seawater can flow in smoothly for the analyzer to sample.

[0017] The present invention has the following beneficial effects: Active intelligent protection: By sensing impact through a pendulum and triggering the spikes to pop out through multi-level mechanical linkage, passive protection is transformed into an active response that can deter organisms and effectively prevent continuous intrusion.

[0018] High reliability through all-mechanical means: The entire sensing, judgment, and triggering process is completed by a purely mechanical mechanism, requiring no electricity or electronic control. It is particularly suitable for high-pressure, corrosive, and long-term extreme deep-sea environments, and has extremely high reliability.

[0019] Synchronous Triggering and Buffering: A central linkage mechanism ensures that dozens of spikes eject almost simultaneously, forming instantaneous comprehensive protection. Simultaneously, the multi-dimensional vibration damping components within the inner cage effectively isolate residual impacts, protecting the core analyzer. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view after removing some of the spiked components and the outer cage plate. Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view at point B in the middle; Figure 5 This is a cross-sectional view of the excitation element; Figure 6 Exploded cross-sectional view of the opening and closing limiting component; Figure 7 This is a cross-sectional view of the spiked component; Figure 8Exploded views of the upper support plate, ornaments, and middle support components; Figure 9 Diagram showing the connection relationship between the sliding plate and the lever; In the diagram: 1. Cap; 101. Guide groove; 2. Central support component; 201. Fixing groove; 3. Spiked component; 301. Support column; 302. Line release port; 303. I-shaped opening; 304. Spiked column body; 305. First limiting piece; 306. Compression spring three; 307. Second limiting piece; 308. Shear pin; 309. Third limiting piece; 4. Outer cage plate; 5. Base; 6. Hammer component; 601. Compression spring one; 602. Hammer; 7. Opening and closing limiting component; 701. Upper rotating plate; 702. Receiving block; 703. Receiving groove; 704. Arc-shaped limiting opening; 705. Limiting groove; 706. Limiting opening; 707. Limiting plate; 708. Limiting column; 709. Support cylinder; 710. Through 711. Groove; 8. Large port; 8. Excitation element; 801. Horizontal column; 802. Ball bearing; 803. Drive cavity; 804. Compression spring four; 805. Baffle plate; 806. Compression spring five; 807. Limiting chamber; 808. Column; 9. Upper support plate; 10. Pulling element; 1001. Sliding plate; 1002. Compression spring two; 1003. Lever; 11. Pendulum; 1101. Pendulum; 1102. Traction rope two; 12. Vibration damping element; 1201. Vertical rod; 1202. Connecting plate; 1203. Compression spring six; 1204. Compression spring seven; 1205. Moving block; 13. Analyzer; 14. Inner cage; 1401. Vibration damping groove; 1402. Limiting block; 15. Annular reinforcing rib. Detailed Implementation

[0021] The following will refer to the appendices in the embodiments of the present invention. Figure 1-9 The technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0022] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "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, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0023] like Figure 1-2As shown, a shockproof outer shell device for an in-situ nutrient analyzer includes a cap 1, a central support 2, spiked components 3, a hammer 6, an opening and closing limiting component 7, an excitation component 8, an upper support plate 9, a pulling component 10, a swing component 11, vibration damping components 12, and an inner cage 14. The central support 2 has a circumferential array of spiked components 3 extending upwards and downwards. The inner cage 14 is fixedly connected to the inner side of all spiked components 3. A circumferential array of vibration damping components 12 is arranged on the inner wall of the inner cage 14. The vibration damping components 12 are detachably connected to the analyzer 13. The cap 1 is detachably mounted on the top of the central support 2. The upper support plate 9 is coaxially fixed inside the cap 1. The swing component 11 is hinged to the center ball at the bottom of the upper support plate 9. The opening and closing limiting member 7 is fixedly provided at the top center of the support plate 9. The hammer member 6 is slidably provided on the top of the opening and closing limiting member 7. The hammer member 6 is connected to the cap 1. The pulling member 10 is slidably provided inside the opening and closing limiting member 7. The pulling member 10 is hinged to the upper support plate 9. The end of the pulling member 10 is connected to the spike member 3. Several excitation members 8 are arranged in a circular array around the axis on the top of the upper support plate 9. One end of the excitation member 8 is connected to the opening and closing limiting member 7, and the other end is connected to the swing member 11. When the swing member 11 swings to the threshold angle, it drives the excitation member 8 to move. The movement of the excitation member 8 drives the opening and closing limiting member 7 to unfold, thereby causing the hammer member 6 to move downward to press the pulling member 10, and finally driving the spike member 3 to work.

[0024] Specifically, the device's skeleton consists of a central support member 2 and support columns 301. The central support member 2 extends downwards circumferentially and is fixedly mounted with multiple spiked components 3 via a circular array of fixing grooves 201. These spiked components 3 are interconnected by several layers of annular reinforcing ribs 15 arranged vertically, forming a robust cylindrical cage-like outer skeleton. An outer cage plate 4 is installed within the spaces formed by the annular reinforcing ribs 15 to prevent small organisms from passing through. A base 5 is detachably connected to the bottom of the outer skeleton, and the base 5 has a grid hole in its center to ensure seawater flow. Inside all the spiked components 3, a cylindrical inner cage 14 is fixedly connected to house and protect the core analyzer 13. Under normal circumstances, all spikes are in a retracted state to prevent snagging on debris.

[0025] like Figure 6As shown, the opening and closing limiting component 7 includes an upper rotating plate 701, a limiting plate 707, and a support cylinder 709; the upper support plate 9 has a coaxial support cylinder 709 fixedly mounted on its top; the top sidewall of the support cylinder 709 has two radially symmetrical limiting ports 706 penetrating the support cylinder 709; the top of the support cylinder 709 has two symmetrically mounted limiting grooves 705 communicating with the limiting ports 706; the upper rotating plate 701 has two symmetrically mounted arc-shaped limiting ports 704 at its top center; the limiting plate 707 has a fixed limiting post 708 on its top; the limiting plate 707 slides within the two limiting ports 706; one limiting post 708 is located within the corresponding arc-shaped limiting port 704 and the limiting groove 705; when the upper rotating plate 701 rotates forward and backward, it drives the two limiting plates 707 to move away from or towards each other. When the upper rotating plate 701 rotates (in this example, it only rotates clockwise), the wall of the arc-shaped limiting port 704 pushes the limiting post 708 radially outward, thereby causing the two limiting plates 707 to move away from each other synchronously within the limiting port 706, achieving the "unfolded" state. When it is fully unfolded, the hammer 602 falls and strikes the pull member 10 at the bottom.

[0026] like Figure 4 As shown, the hammer component 6 includes a compression spring 601 and a hammer 602; the cap 1 has a guide groove 101 along its axial center, and the hammer 602 is disposed in the guide groove 101. The hammer 602 slides in the guide groove 101 in the vertical direction. The compression spring 601 is disposed between the inner wall of the guide groove 101 and the hammer 602. The compression spring 601 is always in a compressed state to provide downward hammering power. The bottom of the hammer 602 abuts against two limiting plates 707. The limiting plates 707 are used to maintain the energy storage state of the hammer 602. When the two limiting plates 707 are separated to a suitable position (i.e., the distance between them is greater than the diameter of the hammer 602), the hammer 602 can strike the pulling component 10 downwards, thereby triggering subsequent actions.

[0027] like Figure 4 , 6 As shown in Figure 9, the pulling member 10 includes a sliding plate 1001, a compression spring 1002, and a lever 1003; the outer wall of the support cylinder 709 has a plurality of vertically arranged through slots 710 arranged in a circular array; a plurality of levers 1003 are radially slidably connected to the outer wall of the sliding plate 1001, and the connection method is as described in Figure 9. Figure 9The connection point of lever 1003 will move radially at different positions. Lever 1003 passes through the through groove 710 and extends to the outside. The middle part of lever 1003 is hinged to the upper support plate 9 through hinge seat 902. The other end of lever 1003 is connected to the spike component 3 through traction rope one. Traction rope one and traction rope two 1102 are connected to the corresponding components through the gap 901 between the plates of the upper support plate 9. Traction rope one and traction rope two 1102 are provided with guide rollers at the corner positions. This setting is a mature existing solution and will not be described in detail. The bottom of the support cylinder 709 is provided with a large port 711. The sliding plate 1001 is slidably arranged in the large port 711. The bottom of the sliding plate 1001 is provided with compression spring two 1002. The diameter of the large port 711 is larger than the inner diameter of the support cylinder 709 to prevent the sliding plate 1001 from moving excessively upward. When the two limiting plates 707 of the opening and closing limiting member 7 approach each other, the sliding plate 1001 is at its highest point and the spike member 3 is in a state of waiting to be activated; when the two limiting plates 707 move away from each other, the hammer 602 presses down on the sliding plate 1001, causing the lever 1003 to pull the traction rope, thus causing the spike member 3 to move.

[0028] like Figure 2 , 7As shown, the central support member 2 has several fixing grooves 201 arranged in a circular array around its circumference. The spike component 3, arranged vertically, is fixedly installed within each fixing groove 201. The spike component 3 includes a support column 301, a spike body 304, a first limiting piece 305, a compression spring 306, a second limiting piece 307, a shear pin 308, and a third limiting piece 309. The outer wall of the support column 301 has several I-shaped openings 303 arranged vertically. The top of the support column 301 has a wire release opening 302 arranged vertically, which connects to the inner large ends of all the I-shaped openings 303. The spike body 304 is slidably installed within the small end of each I-shaped opening 303. The spike body 304 has the first limiting piece 305 and the non-spiked end respectively provided with the small end of the spike body 304. The second limiting piece 307 is described above. A compression spring 306 is fitted onto the spiked column 304. The first limiting piece 305 is located at the outer large end of the I-shaped opening 303, and the second limiting piece 307 is located at the inner large end of the I-shaped opening 303. The compression spring 306 connects the first limiting piece 305 and the outer large end wall of the I-shaped opening 303. A shearing pin 308 is fixedly mounted on the side of the second limiting piece 307 near the wire release port 302. A third limiting piece 309 is mounted on the other end of the shearing pin 308. A traction rope is fitted onto the shearing pin 308, and the third limiting piece 309 is located inside the wire release port 302. When the tension of the traction rope exceeds a threshold, the shearing pin 308 breaks, causing the spiked column 304 to pop outwards. Specifically, the spiked component 3 is the core actuator for achieving active protection. The traction rope consists of a main line and several auxiliary lines. The head of the main line connects to the end of lever 1003, and the end of the main line splits into several auxiliary lines. Each auxiliary line is connected to a corresponding shear pin 308 (not labeled in the diagram; its path follows the line release opening 302). Note that the shear pin 308 passes through the third limiting plate 309 and extends to the line release opening 302. This section is connected to the auxiliary lines. When the auxiliary lines are pulled, a vertical force is applied, breaking the connection between the shear pin 308 and the second limiting plate 307. Under normal conditions, the third limiting plate 309 is locked within the line release opening 302, preventing the spiked column 304 from ejecting outwards, and the compression spring 306 is in a compressed, energy-storing state. When the traction rope is subjected to sufficiently large tension, it will break the brittle shear pin 308. Once the shear pin 308 breaks, the constraint of the third limiting piece 309 disappears, and the compression spring 306 rapidly releases energy, pushing the spiked column 304 outward at high speed along the small end of the I-shaped opening 303, forming a deterrent and physical isolation.

[0029] like Figure 5As shown, the actuating element 8 includes a horizontal column 801, a ball 802, a compression spring 804, a baffle 805, a compression spring 806, a limiting chamber 807, and a column 808; the column 808 is fixedly mounted at the bottom of the horizontal column 801, and the column 808 is fixedly mounted at the top of the upper support plate 9; a plurality of receiving blocks 702 are provided circumferentially on the outer side wall of the upper rotating plate 701, and a receiving groove 703 is provided on one side of the receiving block 702 along the tangent direction of the upper rotating plate 701; a driving cavity 803 is provided inside the column 808 along the length direction, one end of the driving cavity 803 is open and coaxially connected with the receiving groove 703, and the other end is sealed. The structure is closed and equipped with a compression spring 804, on which the ball 802 is movably connected. A limiting chamber 807 is located at the bottom of the horizontal column 801. The limiting chamber 807 is a vertical plate with a blind hole, inside which a baffle 805 is installed. A small opening at the bottom of the limiting chamber 807 is used to connect a traction rope 1102. A compression spring 806 is located inside the limiting chamber 807, and the baffle 805 is located at the top of the compression spring 806. The baffle 805 is slidably connected to the limiting chamber 807 in a vertical direction and limits the ball 802, thus keeping the compression spring 804 compressed. The ball 802 tends to move to the left along the drive cavity 803. When the baffle 805 completely slides into the blind hole, the ball 802 is propelled to the left, impacting the receiving groove 703. The kinetic energy of the impact drives the upper rotating plate 701 to rotate.

[0030] like Figure 8 As shown, the pendulum 11 includes a pendulum 1101 and a second traction rope 1102; the pendulum 1101 is ball-jointed to the bottom of the upper support plate 9, and a plurality of the second traction ropes 1102 are connected to the bottom of the pendulum 1101, with the second traction ropes 1102 extending to the bottom of the baffle 805; when the pendulum 1101 swings to a threshold angle, it pulls the baffle 805 downward and causes the marble 802 to move toward the opening end and strike the receiving groove 703, thereby driving the upper rotating plate 701 to rotate, and thus driving the two limiting plates 707 to move away from each other.

[0031] like Figure 3As shown, the vibration damping component 12 includes a vertical rod 1201, a connecting plate 1202, a compression spring six 1203, a compression spring seven 1204, and a moving block 1205; the inner wall of the inner cage 14 has a plurality of vertically arranged vibration damping grooves 1401 arranged in a circumferential array, and each of the vibration damping grooves 1401 has a limiting block 1402 near its inner side at both the upper and lower ends; a moving block 1205 is fixedly installed at each end of the vertical rod 1201, and the vertical rod 1201 is vertically arranged in the vibration damping groove 1205. 01. Two connecting plates 1202 are slidably mounted on the upright 1201. Two compression springs 1203 are sleeved on the upright 1201. The two connecting plates 1202 are connected to the outer wall of the analyzer 13. The compression springs 1203 are located between the moving block 1205 and the connecting plates 1202. A compression spring 1204 is located between the radially outer side of the moving block 1205 and the inner wall of the vibration damping groove 1401. The moving block 1205 can move radially. The compression stroke of the compression spring 1204 is extremely short to prevent the limiting blocks 1402 at both ends from tilting excessively and dislodging. The compression spring 1204 is used to provide radial vibration damping, and the compression spring 1203 is used to provide axial vibration damping. Since the device is located in the sea, it will naturally dissipate energy by impacting seawater, preventing resonance.

[0032] In addition, it includes an outer cage plate 4 and annular reinforcing ribs 15. All the spiked components 3 are connected by several annular reinforcing ribs 15 arranged in a vertical direction to form several spaces, in which the outer cage plate 4 is located. It also includes a base 5, the bottom of all the spiked components 3 is detachably connected to the base 5, and the base 5 has a grid hole in the center for water to flow in. The outer cage plate 4 can be implemented in various ways. For example, it can be made by sandwiching a brittle core material (such as a ceramic microsphere array with precisely controllable fracture strength, a gypsum-based material with a specific ratio, or a low-strength polymer foam) between two horizontal rigid panels (such as carbon fiber composite materials). Working principle: Threshold fracture energy absorption: When the impact force exceeds the design threshold, the brittle core layer undergoes controllable and overall fracture. This process absorbs a large amount of energy and disperses the impact load over a larger area. Provides clear diagnosis: The fracture of the core layer is irreversible, and the degree of fracture is directly related to the impact strength. The impact history can be accurately assessed by ultrasonic scanning or visual inspection after recovery. It can also be filled with high-strength hollow ceramic or glass microspheres, or elastic rubber spheres; Working principle: friction, rolling, and compression between particles: impact energy is dissipated through friction, rearrangement, and elastic deformation of the spheres themselves. Fluidization effect: under severe impact, the particle layer will briefly exhibit fluid-like behavior, dispersing the load.

[0033] The workflow of this invention is as follows: Standby state: The device is deployed on the seabed. The pendulum 1101 is suspended vertically. All the balls 802 of the excitation elements 8 are limited by the baffles 805. The two limiting plates 707 of the opening and closing limiting elements 7 are close to each other, supporting the hammer 602. The spike column 304 in the spike component 3 is locked by the third limiting plate 309 and is in a retracted state. The springs in the vibration damping element 12 are in a natural or slightly compressed state, stably supporting the analyzer 13.

[0034] Impact Sensing: When a large creature (such as a shark) impacts the outside of the device, the entire device gains acceleration. The internal pendulum 1101 maintains its original trend due to inertia, thus oscillating relative to the upper support plate 9.

[0035] Threshold judgment and triggering: If the impact is violent enough, causing the swing angle of the pendulum 1101 to exceed the design threshold, the corresponding traction rope 1102 will be tightened, the baffle 805 will be pulled down, and the ball 802 will be released. The ball 802 strikes the receiving groove 703, causing the upper rotating plate 701 to rotate.

[0036] Release of the hammer: The rotation of the upper rotating plate 701 drives the two limiting plates 707 to move away from each other. The hammer 602 loses its support and falls at high speed under the drive of the compression spring 601.

[0037] Linked spikes: The falling hammer 602 violently presses down on the sliding plate 1001. The sliding plate 1001 moves downward, pushing all levers 1003 to rotate. The outer ends of levers 1003, through traction rope one, apply a huge, almost synchronous pulling force to the shear pins 308 in all spike components 3.

[0038] Spike ejection: All shear pins 308 are simultaneously pulled off. The third limiting piece 309 of each spike post 304 is released, and the internal compression spring 306 is released instantly, ejecting dozens of spike posts 304 from the I-shaped opening 303 at high speed, turning the device from a smooth cage into a deterrent "spiky ball" in an instant.

[0039] Buffer protection: During impact and spike ejection, the impact transmitted to the inner cage 14 is absorbed and isolated by the compression springs 1203 and 1204 of the damping element 12, ensuring that the vibration and acceleration experienced by the analyzer 13 are within a safe range.

[0040] Status Maintenance and Recording: Once the spikes are ejected, they cannot retract automatically; the device will remain in a defensive configuration until retracted. After retraction, operators can analyze and record the impact events by checking whether the spikes were ejected, whether the shear pins were broken, and the final position of the pendulum.

[0041] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications, alterations, substitutions, or variations made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A shockproof outer shell device for an in-situ nutrient analyzer, characterized in that: It includes a cap (1), a central support (2), a spiked component (3), a hammer (6), an opening and closing limit component (7), an excitation component (8), an upper support plate (9), a pulling component (10), a swing component (11), a vibration damping component (12), and an inner cage (14). The central support member (2) has a circular array of spiked parts (3) extending upward and downward around the circumference. The inner cage (14) is fixedly connected to the inner side of all the spiked parts (3). The inner cage (14) has a circular array of damping parts (12) on its inner wall. The damping parts (12) are detachably connected to the analyzer (13). The top of the middle support member (2) is detachably provided with the cap (1), the upper support plate (9) is coaxially fixed inside the cap (1), the swing member (11) is spherically hinged to the bottom center of the upper support plate (9), the opening and closing limiting member (7) is fixedly provided at the top center of the upper support plate (9), the hammer member (6) is slidably provided on the top of the opening and closing limiting member (7), the hammer member (6) is connected to the cap (1), the pulling member (10) is slidably provided inside the opening and closing limiting member (7), the pulling member (10) is hinged to the upper support plate (9), and the end of the pulling member (10) is connected to the spike member (3); The top of the upper support plate (9) has a plurality of excitation elements (8) arranged in a circular array around the axis. One end of the excitation element (8) is connected to the opening and closing limiting element (7), and the other end is connected to the swing element (11). When the pendant (11) swings to the threshold angle, it drives the excitation member (8) to move. The movement of the excitation member (8) drives the opening and closing limit member (7) to unfold, thereby causing the hammer member (6) to move downward to press the pull member (10), and finally drive the spike member (3) to work.

2. The anti-collision shell device for an in-situ nutrient analyzer according to claim 1, characterized in that: The opening and closing limiting component (7) includes an upper rotating plate (701), a limiting plate (707), and a support cylinder (709); The upper support plate (9) is fixedly provided with a coaxial support cylinder (709) at the top. The top side wall of the support cylinder (709) is provided with two limiting ports (706) that penetrate the support cylinder (709) radially symmetrically. The top of the support cylinder (709) is provided with two limiting grooves (705) that communicate with the limiting ports (706). The upper rotating plate (701) is provided with two arc-shaped limiting ports (704) symmetrically arranged at the top center. The limiting plate (707) is fixedly provided with a limiting post (708) at the top, and the limiting plate (707) is slidably provided in the two limiting ports (706). One of the limiting posts (708) is located in the arc-shaped limiting port (704) and the limiting groove (705) on the corresponding side. When the upper rotating plate (701) rotates forward and backward, it causes the two limiting plates (707) to move away from or towards each other.

3. The anti-collision housing device for an in-situ nutrient analyzer according to claim 2, characterized in that: The hammer component (6) includes a compression spring (601) and a hammer (602); The cap (1) has a guide groove (101) along its axial center. The hammer (602) is located in the guide groove (101). A compression spring (601) is located between the inner wall of the guide groove (101) and the hammer (602). The bottom of the hammer (602) abuts against the two limiting plates (707).

4. The anti-collision housing device for an in-situ nutrient analyzer according to claim 3, characterized in that: The pulling component (10) includes a sliding plate (1001), a compression spring (1002), and a lever (1003). The outer wall of the support cylinder (709) has a plurality of vertically arranged through slots (710) arranged in a circular array; the outer wall of the sliding plate (1001) has a plurality of levers (1003) slidably connected radially, the levers (1003) passing through the through slots (710) and extending to the outside, the middle part of the levers (1003) is hinged to the upper support plate (9), and the other end of the levers (1003) is connected to the spike component (3) through a traction rope. The support cylinder (709) has a large port (711) at the bottom, and the sliding plate (1001) is slidably disposed inside the large port (711). The second compression spring (1002) is disposed at the bottom of the sliding plate (1001). When the two limiting plates (707) of the opening and closing limiting member (7) approach each other, the sliding plate (1001) is at the highest point and the spike component (3) is in a state of being ready to be activated; when the two limiting plates (707) move away from each other, the hammer (602) presses down on the sliding plate (1001) to drive the lever (1003) to pull the traction rope, thereby causing the spike component (3) to move.

5. The anti-collision housing device for an in-situ nutrient analyzer according to claim 4, characterized in that: The central support member (2) has several fixing grooves (201) arranged in a circumferential array in the circumferential direction, and the spike member (3) arranged in the vertical direction is fixedly installed in the fixing groove (201). The spike component (3) includes a support post (301), a spike post body (304), a first limiting piece (305), a compression spring (306), a second limiting piece (307), a shear pin (308), and a third limiting piece (309). The outer wall of the support column (301) is arranged with a plurality of I-shaped openings (303) in the vertical direction, and the top of the support column (301) is provided with a wire-laying opening (302) in the vertical direction, and the wire-laying opening (302) is connected to the inner large end of all the I-shaped openings (303). The spiked column (304) is slidably disposed within the small end of the I-shaped opening (303). The first limiting piece (305) and the second limiting piece (307) are respectively disposed on the column body and the non-spiked end of the spiked column (304). The compression spring (306) is sleeved on the spiked column (304). The first limiting piece (305) is located at the large end of the outer side of the I-shaped opening (303), and the second limiting piece (307) is located at the inner side of the I-shaped opening (303). At the large end, the compression spring three (306) connects the first limiting piece (305) and the outer large end wall of the I-shaped opening (303). The second limiting piece (307) is fixedly provided with the shearing pin (308) on the side near the wire release opening (302). The third limiting piece (309) is provided on the other end of the shearing pin (308). The first traction rope is sleeved on the shearing pin (308). The third limiting piece (309) is located inside the wire release opening (302). When the tension of the traction rope exceeds the threshold, the shear pin (308) breaks, causing the spiked column (304) to pop outward.

6. The anti-collision housing device for an in-situ nutrient analyzer according to claim 2, characterized in that: The actuating element (8) includes a horizontal column (801), a ball (802), a compression spring four (804), a baffle (805), a compression spring five (806), a limiting chamber (807), and a column (808). The column (808) is fixedly installed at the bottom of the horizontal column (801), and the column (808) is fixedly installed at the top of the upper support plate (9). The outer side wall of the upper rotating plate (701) is provided with a plurality of receiving blocks (702) in the circumferential direction, and one side of the receiving block (702) is provided with a receiving groove (703) along the tangent direction of the upper rotating plate (701). The column (808) has a drive cavity (803) along its length. One end of the drive cavity (803) is open and coaxially connected to the receiving groove (703), while the other end is closed and has a compression spring four (804). The ball (802) is movably connected to the compression spring four (804). The bottom of the horizontal column (801) has a limiting chamber (807). The limiting chamber (807) has a compression spring five (806) inside. The top of the compression spring five (806) has a baffle (805). The baffle (805) is slidably connected to the limiting chamber (807) in the vertical direction and limits the ball (802) so that the compression spring four (804) is in a compressed state.

7. The anti-collision housing device for an in-situ nutrient analyzer according to claim 6, characterized in that: The pendulum (11) includes a pendulum (1101) and a second traction rope (1102). The upper support plate (9) is ball-jointed to the bottom of the pendulum (1101), and the bottom of the pendulum (1101) is connected to a plurality of the second traction ropes (1102), which extend to the bottom of the baffle (805). When the pendulum (1101) swings to the threshold angle, it pulls the baffle (805) downward and causes the marble (802) to move toward the opening end and hit the receiving groove (703), thereby driving the upper rotating plate (701) to rotate, and then driving the two limiting plates (707) to move away from each other.

8. The anti-collision housing device for an in-situ nutrient analyzer according to claim 1, characterized in that: The vibration damping component (12) includes a pole (1201), a connecting plate (1202), a compression spring six (1203), a compression spring seven (1204), and a moving block (1205). The inner wall of the inner cage (14) has a number of vertically arranged damping grooves (1401) arranged in a circular array on the inner side. Each of the upper and lower ends of the damping groove (1401) is provided with a limiting block (1402) near the inner side. The upright (1201) is fixed with a movable block (1205) at each end. The upright (1201) is vertically arranged in the vibration damping groove (1401). Two connecting plates (1202) are slidably arranged on the upright (1201). Two compression springs (1203) are sleeved on the upright (1201). The two connecting plates (1202) are connected to the outer wall of the analyzer (13). The compression springs (1203) are located between the movable block (1205) and the connecting plate (1202). A compression spring (1204) is arranged between the radial outer side of the movable block (1205) and the inner wall of the vibration damping groove (1401). The movable block (1205) can move radially.

9. The anti-collision housing device for an in-situ nutrient analyzer according to claim 1, characterized in that: It also includes an outer cage plate (4) and annular reinforcing ribs (15). All the spiked parts (3) are connected by several annular reinforcing ribs (15) arranged in a vertical direction to form several spaces, and the outer cage plate (4) is provided in the spaces.

10. The anti-collision housing device for an in-situ nutrient analyzer according to claim 1, characterized in that: It also includes a base (5), the bottom of all the spiked parts (3) being detachably connected to the base (5), and the base (5) having a grid hole in the center for water to flow in.

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