Modularized ship cabin instrument vibration isolation device

Abstract

The invention provides a modularized ship cabin instrument vibration isolation device, and relates to the field of ship instruments, and the modularized ship cabin instrument vibration isolation device is characterized in that a mounting hole is formed in the bottom of a lower mounting base; three shock absorber assemblies are hinged to the circumference of the outer side of the top of the lower mounting base in an array mode, and the tops of the three shock absorber assemblies are hinged to the instrument mounting base at the same time; a mounting hole is formed in the top of the top mounting base; three shock absorber assemblies are arranged at the bottom of the top mounting base in a circumferential array mode and hinged to the bottom of the top mounting base, and the bottoms of the three shock absorber assemblies are hinged to the top of the instrument mounting base at the same time; the shock insulation pad is fixedly connected to the upper surface of the instrument mounting seat, and mounting holes with different hole distances and positions are formed in the instrument mounting seat and the shock insulation pad. The shock absorber can buffer multi-directional shock in all directions, is suitable for various instruments, is easy to maintain, prevents secondary impact, effectively guarantees stable operation of precise instruments, and solves the problems that an existing shock absorber is single in shock absorption direction, fixed in damping parameter and insufficient in damping in the face of large-amplitude impact.

Description

Technical Field

[0001] This invention relates to the field of marine instrumentation technology, and in particular to a modular vibration isolation device for marine cabin instruments. Background Technology

[0002] During navigation, ships are subjected to complex conditions such as wave impact and propeller propulsion, resulting in multi-directional and multi-frequency composite vibrations within the cabins. The navigation, communication, and detection instruments housed within these cabins are mostly precision devices, and their internal electronic components and optical assemblies are extremely sensitive to vibration. Prolonged exposure to vibration can easily lead to problems such as component loosening, data drift, and decreased measurement accuracy. In severe cases, it can damage core instrument components, directly impacting ship navigation safety and operational efficiency. To mitigate the effects of vibration on these precision instruments, ship cabins are generally equipped with vibration dampers to absorb vibrations from the instrument mounting bases.

[0003] For example, application number CN201811247697.7 discloses a shock-absorbing base for a Beidou marine vessel positioning instrument, including a positioning instrument and a movable clamping ring. A sleeve base is movably fitted onto the outer wall of the positioning instrument. A spring is welded to the lower part of the sleeve base, and the lower end of the spring is fixedly embedded in the upper surface of a positioning welding plate. The positioning welding plate is fixedly fitted onto the outer wall of the positioning instrument near its bottom. A fixed clamping ring is welded to the outer wall of the sleeve base, and an L-shaped steel plate is welded to the bottom end of the fixed clamping ring. A telescopic plate is threadedly fixed inside the L-shaped steel plate, and a movable block is welded to one end of the telescopic plate. A movable clamping ring is connected to the upper part of the movable block, and the top end of the movable clamping ring is threadedly fixed to the outer wall of the sleeve base with a fastening bolt. The shock-absorbing base of this invention can fix the positioning instrument on a circular or square object, avoiding the monotony of installation and improving the versatility and flexibility of base installation, making it highly practical.

[0004] For example, application number CN202121891389.5 discloses a shock-absorbing shipborne Beidou navigation terminal, belonging to the field of Beidou shipborne terminal technology. This device includes a support base, a control panel on the front side of the support base, a mounting frame in the middle of the support base, a lifting mechanism inside the mounting frame, and the top of the lifting mechanism extending through the top of the mounting frame and above it. An angle adjustment mechanism is located at the top of the mounting frame and in the middle of the lifting mechanism. The terminal body is located at the top of the lifting mechanism, and buffer and shock-absorbing components are provided around the perimeter and bottom of the mounting frame. Beneficial effects: This utility model is easy to operate, rationally designed, and highly convenient to use. Furthermore, it can alleviate the impact on the internal components of the terminal body when the device is on a ship.

[0005] However, existing shock absorbers have a single damping direction, mostly designed for vertical or horizontal unidirectional vibrations, making it difficult to cope with the complex multidirectional vibrations during ship navigation, resulting in blind spots in protection. At the same time, the damping parameters are fixed and cannot be dynamically adjusted according to the vibration intensity and piston rod stroke. The damping is insufficient when facing large impacts, while the damping is too large when facing small vibrations, affecting the instrument's response speed. In addition, the contraction and rebound damping are the same, which can easily lead to excessive resistance during contraction or excessively fast rebound, resulting in unsatisfactory shock absorption effect. Summary of the Invention

[0006] In view of this, the present invention provides a modular vibration isolation device for ship cabin instruments. It constructs a three-dimensional vibration reduction matrix through staggered and tilted shock absorber components, and is equipped with an adaptive variable damping mechanism with gear rack and worm gear transmission. Combined with multi-hole fitting design and modular assembly, it achieves differentiated damping of contraction and rebound through damping plates, buffering multi-directional vibrations in all directions, adapting to various instruments, easy to maintain and preventing secondary impacts, effectively ensuring the stable operation of precision instruments.

[0007] The present invention provides a modular instrument vibration isolation device for ship cabins, which includes the purpose and effect of: a lower mounting base, the bottom of which is provided with mounting holes; and three shock absorber assemblies connected to the outer circumferential array of the top of the lower mounting base by hinges, the tops of which are simultaneously connected to the instrument mounting seat by hinges. The top mounting base has a mounting hole on its top; the bottom of the top mounting base has three shock absorber assemblies connected by hinges arranged in a circular array, and the bottom of the three shock absorber assemblies is also connected to the top hinge of the instrument mounting base. The vibration isolation pad is fixedly connected to the upper surface of the instrument mounting base. The instrument mounting base and the vibration isolation pad are provided with mounting holes with different hole spacing and positions.

[0008] Furthermore, the three shock absorber assemblies described above are offset from the three shock absorber assemblies described below, and the shock absorber assemblies are installed at an outward tilt of forty-five degrees.

[0009] Furthermore, the shock absorber assembly includes: a shock absorber housing and a shock absorber piston rod; the shock absorber piston rod is slidably connected inside the shock absorber housing to form a piston cylinder structure, and a shock absorber spring is provided inside the shock absorber housing, and the shock absorber piston rod is elastically connected to the shock absorber housing through the spring.

[0010] Furthermore, the shock absorber assembly also includes a variable resistance selection valve and a hydraulic damper. The variable resistance selection valve and the hydraulic damper are fixedly connected inside the shock absorber assembly. The shock absorber housing, the variable resistance selection valve, and the hydraulic damper are connected by hydraulic pipelines to form a variable resistance mechanism.

[0011] Furthermore, the variable resistance mechanism includes: The second connection port of the housing is located on the upper part of the shock-absorbing housing. The first connection port of the selector valve is located at the end of the variable resistance selector valve, and the second connection port of the housing is connected to the first connection port of the selector valve through a hydraulic pipeline. The second connection port of the selector valve is provided with multiple components, which are arranged in a circumferential array on the outside of the variable resistance selector valve. The damper has a second connection port, and multiple damper second connection ports are arranged in an array on the side of the hydraulic damper. The damper second connection ports correspond one-to-one with the selector valve second connection ports and are connected through hydraulic pipelines. The first connection port of the damper is located at the lower rear part of the hydraulic damper; The first connection port of the housing is located at the lower part of the shock-absorbing outer shell.

[0012] Furthermore, the variable resistance mechanism includes: A variable resistance drive rack is fixedly connected to the upper side of the shock-absorbing piston rod; A variable-drag worm gear, which is rotatably connected to the inner side of the shock absorber assembly; A variable resistance gear is coaxially and fixedly connected to the end of a variable resistance worm gear. A variable resistance drive rack is located above the variable resistance gear. When the variable resistance drive rack meshes with the variable resistance gear, the variable resistance drive rack and the variable resistance gear together form a gear and rack transmission mechanism.

[0013] Furthermore, the variable resistance mechanism also includes: A variable-drag worm gear is rotatably connected to the inside of the shock absorber assembly. The variable-drag worm and the variable-drag worm gear mesh together to form a worm gear transmission mechanism.

[0014] Furthermore, the variable resistance mechanism also includes: The valve core of the selector valve is rotatably connected inside the variable resistance selector valve, and the valve core of the selector valve is coaxially and fixedly connected to the variable resistance worm gear.

[0015] Furthermore, the variable resistance mechanism also includes: The selector valve connection port is located on the side of the selector valve core.

[0016] Furthermore, the hydraulic damper is internally provided with multiple sets of damping pipes, which are respectively connected to multiple sets of second connection ports of the damper. The multiple sets of damping pipes are also connected to the first connection port of the damper. The lengths and diameters of the multiple sets of damping pipes are different.

[0017] Furthermore, the damping conduit includes: The damping plates are evenly arranged and fixedly connected inside the damping pipe. The damping plates are inclined and face the second connection port of the damper.

[0018] Beneficial effects This invention constructs a three-dimensional damping matrix by using staggered and tilted shock absorber components, combined with an adaptive variable damping mechanism of gear rack and worm gear transmission, and a multi-hole fitting design and modular assembly. It uses damping plates to achieve differentiated damping for contraction and rebound, buffering multi-directional vibrations in all directions, adapting to various instruments, easy to maintain and preventing secondary impacts, effectively ensuring the stable operation of precision instruments.

[0019] This invention forms a three-dimensional damping matrix by using three staggered damper components on the top and bottom, tilted outward at 45 degrees. This matrix can simultaneously buffer combined vibrations in the vertical, horizontal, and tilt directions, comprehensively covering the types of vibrations during ship navigation, completely eliminating damping blind spots, effectively reducing the impact of multi-directional vibrations on precision instruments, and ensuring the stability of instrument operation.

[0020] The variable resistance mechanism of this invention uses a gear rack and pinion and a worm gear for precise transmission, and links the valve core of the selector valve to accurately switch between damping pipes of different diameters and lengths, so as to achieve dynamic adaptation of damping under different strokes of the shock-absorbing piston rod. When there is a large impact, the large damping pipe is connected to enhance the energy absorption capacity; when there is a small vibration, the small damping pipe is switched to ensure the instrument's response sensitivity, which perfectly solves the technical pain point of traditional fixed damping that is difficult to take into account different vibration intensities.

[0021] The instrument mounting base and vibration isolation pad of this invention have multiple sets of mounting holes with different hole spacing and positions, which can be directly adapted to various sizes and types of precision instruments in cabins without the need for additional customized mounting brackets; each shock absorber component adopts a modular assembly design, so there is no need to disassemble the whole device during disassembly and maintenance, which greatly shortens downtime and improves the efficiency of ship operation.

[0022] The damping plate inclinedly installed inside the damping pipe of this invention not only increases the damping of oil flow, but also realizes the damping differentiation of the contraction and rebound processes, effectively suppressing the rebound amplitude and avoiding secondary impact damage to the instrument; at the same time, the piston cylinder structure and the shock-absorbing spring work together to achieve efficient buffering of vibration and accurately suppress the rebound speed, further improving the vibration isolation stability. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0024] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0025] In the attached diagram: Figure 1This is a schematic diagram of the overall structure of a modular ship cabin instrument vibration isolation device according to an embodiment of the present invention.

[0026] Figure 2 This is a cross-sectional structural schematic diagram of the variable resistance mechanism and shock-absorbing piston rod of the modular ship cabin instrument vibration isolation device according to an embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram of the vibration-damping outer shell structure of a modular ship cabin instrument vibration isolation device according to an embodiment of the present invention.

[0028] Figure 4 This is a schematic diagram of the variable resistance selection valve structure of the modular ship cabin instrument vibration isolation device according to an embodiment of the present invention.

[0029] Figure 5 This is a schematic diagram of the selector valve core structure of a modular ship cabin instrument vibration isolation device according to an embodiment of the present invention.

[0030] Figure 6 This is an isometric structural diagram of the selector valve core of the modular ship cabin instrument vibration isolation device according to an embodiment of the present invention.

[0031] Figure 7 This is a cross-sectional view of the valve core of the selection valve of the modular ship cabin instrument vibration isolation device according to an embodiment of the present invention.

[0032] Figure 8 This is a cross-sectional structural schematic diagram of the hydraulic damper of the modular ship cabin instrument vibration isolation device according to an embodiment of the present invention.

[0033] Figure 9 This is an embodiment of the modular ship cabin instrument vibration isolation device of the present invention. Figure 8 A magnified schematic diagram of the structure at point A in the middle.

[0034] Figure 10 This is an embodiment of the modular ship cabin instrument vibration isolation device of the present invention. Figure 8 A magnified schematic diagram of the structure at point B in the middle.

[0035] Figure 11 This is an embodiment of the modular ship cabin instrument vibration isolation device of the present invention. Figure 8 A magnified schematic diagram of the structure at point C.

[0036] Figure 12 This is an embodiment of the modular ship cabin instrument vibration isolation device of the present invention. Figure 8 A magnified schematic diagram of the structure at point D in the middle.

[0037] List of reference numerals 1. Lower mounting base; 2. Shock absorber assembly; 201. Shock absorber housing; 2011. First housing connection port; 2012. Second housing connection port; 202. Shock absorber piston rod; 2021. Variable resistance drive rack; 203. Variable resistance worm gear; 2031. Variable resistance gear; 204. Variable resistance worm wheel; 205. Variable resistance selector valve; 2051. Selector valve core; 2052. Selector valve connection port; 2053. Selector valve second connection port; 2054. Selector valve first connection port; 206. Hydraulic damper; 2061. Damper second connection port; 2062. Damping pipe; 2065. Damper first connection port; 2066. Damping plate; 3. Instrument mounting base; 4. Vibration isolation pad; 5. Top mounting base. Detailed Implementation

[0038] Example 1: Please refer to Figures 1 to 3 As shown: The present invention provides a modular instrument vibration isolation device for ship cabins, including a lower mounting base 1, the bottom of which is provided with mounting holes, and the lower mounting base 1 is fixedly connected to the bottom of the instrument housing through the mounting holes; three shock absorber assemblies 2 are connected to the outer side of the top of the lower mounting base 1 by a circular array hinge, and the top of the three shock absorber assemblies 2 is also hinged to the instrument mounting base 3. The top mounting base 5 has a mounting hole on its top, and the top mounting base 5 is fixedly connected to the top of the instrument housing through the mounting hole; the bottom of the top mounting base 5 has three shock absorber assemblies 2 connected by hinges arranged in a circular array, and the bottom of the three shock absorber assemblies 2 is also connected to the top hinge of the instrument mounting base 3. Vibration isolation pad 4 is fixedly connected to the upper surface of instrument mounting base 3. The instrument mounting base 3 and vibration isolation pad 4 are provided with mounting holes of different spacing and positions, which are suitable for the installation of instruments of different sizes and types in the cabin.

[0039] Among them, the three upper shock absorber assemblies 2 are staggered relative to the three lower shock absorber assemblies 2, and the shock absorber assemblies 2 are installed at a 45-degree angle to the outside. In actual use, they can buffer vibrations in different directions and reduce the impact of vibrations on the instrument.

[0040] The shock absorber assembly 2 includes a shock absorber housing 201 and a shock absorber piston rod 202. The shock absorber piston rod 202 is slidably connected inside the shock absorber housing 201 to form a piston cylinder structure. A shock absorber spring is installed inside the shock absorber housing 201, and the shock absorber piston rod 202 is elastically connected to the shock absorber housing 201 through the spring. In use, the shock absorber spring buffers the vibration, and the piston cylinder structure suppresses the rebound speed, reducing the impact of vibration on the cabin instruments.

[0041] Example 2: Please refer to Figures 4 to 12 As shown: The shock absorber assembly 2 also includes a variable resistance selection valve 205 and a hydraulic damper 206. The variable resistance selection valve 205 and the hydraulic damper 206 are fixedly connected inside the shock absorber assembly 2. The shock absorber housing 201, the variable resistance selection valve 205, and the hydraulic damper 206 are connected by hydraulic pipes to form a variable resistance mechanism. In use, the variable resistance mechanism enables different damping at different strokes of the shock absorber piston rod 202, thereby better coping with larger vibration impacts, better absorbing vibration energy, reducing vibration frequency, and ensuring the safety of cabin instruments.

[0042] The variable resistance mechanism includes: The second connection port 2012 of the housing is located on the upper part of the shock-absorbing housing 201; The first connection port 2054 of the selector valve is located at the end of the variable resistance selector valve 205. The second connection port 2012 of the housing is connected to the first connection port 2054 of the selector valve through a hydraulic pipeline. Selector valve second connection port 2053, multiple selector valve second connection ports 2053 are provided, and multiple selector valve second connection ports 2053 are arranged in a circumferential array on the outside of the variable resistance selector valve 205; The damper second connection port 2061 is provided with multiple damper second connection ports 2061. The multiple damper second connection ports 2061 are arranged in an array on the side of the hydraulic damper 206. The damper second connection ports 2061 correspond one-to-one with the selector valve second connection port 2053 and are connected through hydraulic pipelines. The first connection port 2065 of the damper is located at the lower rear part of the hydraulic damper 206. The housing first connection port 2011 is located at the lower part of the shock absorber housing 201. During use, when the shock absorber piston rod 202 is impacted and slides downward, the liquid in the housing first connection port 2011 flows into the damper first connection port 2065 through a pipe. Under the selection action of the selector valve, the liquid flows out from the corresponding damper second connection port 2061, then enters the selector valve second connection port 2053, flows through the variable resistance selector valve 205, and then flows out from the selector valve first connection port 2054, passing through the hydraulic pipe and then into... The oil enters the second connection port 2012 of the housing, thereby completing the buffering and absorption of impact energy. During the rebound process, the oil in the upper part of the piston flows out from the second connection port 2012 of the housing, flows through the hydraulic pipeline and enters the first connection port 2054 of the selector valve. Under the selection action of the selector valve, the corresponding second connection port 2053 of the selector valve flows out, enters the corresponding second connection port 2061 of the damper through the hydraulic pipeline, and then flows out from the first connection port 2065 of the damper, enters the first connection port 2011 of the housing through the hydraulic pipeline, and flows back to the bottom of the piston.

[0043] The variable resistance mechanism includes: A variable resistance drive rack 2021 is fixedly connected to the upper side of the shock-absorbing piston rod 202. The variable resistance worm gear 203 is rotatably connected to the inner side of the shock absorber assembly 2; The variable resistance gear 2031 is coaxially fixedly connected to the end of the variable resistance worm gear 203. The variable resistance drive rack 2021 is located above the variable resistance gear 2031. When the variable resistance drive rack 2021 meshes with the variable resistance gear 2031, the variable resistance drive rack 2021 and the variable resistance gear 2031 together form a gear and rack transmission mechanism. In use, when the shock-absorbing piston rod 202 extends or retracts, the shock-absorbing piston rod 202 drives the variable resistance gear 2031 to rotate through the gear and rack transmission mechanism formed by the variable resistance drive rack 2021 and the variable resistance gear 2031.

[0044] The variable resistance mechanism also includes: The variable resistance worm gear 204 is rotatably connected to the inside of the shock absorber assembly 2. The variable resistance worm 203 and the variable resistance worm gear 204 mesh together to form a worm gear transmission mechanism. In use, when the variable resistance worm 203 rotates, the variable resistance worm 203 drives the variable resistance worm gear 204 to rotate through the worm gear transmission mechanism.

[0045] The variable resistance mechanism also includes: Selector valve core 2051 is rotatably connected inside variable resistance selector valve 205. Selector valve core 2051 is coaxially and fixedly connected to variable resistance worm gear 204. In use, when variable resistance worm gear 204 rotates, variable resistance worm gear 204 drives selector valve core 2051 to rotate, realizing the selection action of different damping.

[0046] The variable resistance mechanism also includes: Selector valve connection port 2052 is located on the side of selector valve core 2051. In use, when selector valve core 2051 rotates, selector valve connection port 2052 is aligned with different selector valve second connection ports 2053. The corresponding selector valve second connection port 2053 is connected to the selector valve first connection port 2054, thereby achieving different damping adjustment purposes.

[0047] The hydraulic damper 206 has multiple sets of damping pipes 2062 inside, which are respectively connected to multiple sets of second connection ports 2061 of the damper. The multiple sets of damping pipes 2062 are also connected to the first connection port 2065 of the damper. The length and orifice of the multiple sets of damping pipes 2062 are different. In use, different orifice diameters and lengths can change the flow speed of the oil, thereby achieving different damping under different strokes of the shock-absorbing piston rod 202.

[0048] The damping conduit 2062 includes: Damping plates 2066 are evenly arranged and fixedly connected inside the damping pipe 2062. The damping plates 2066 are inclined and face the second connection port 2061 of the damper. In use, the damping plates 2066 can increase the flow damping of the oil. At the same time, the unidirectionally inclined damping plates 2066 can achieve different contraction and rebound damping, reduce the amplitude of rebound, and thus achieve the purpose of vibration reduction and isolation.

[0049] The specific usage and function of this embodiment are as follows: When subjected to impact, the six sets of shock absorber assemblies 2, which are set up at an angle, can reduce vibration and absorb energy, significantly reducing the amplitude and frequency of vibration. Since the shock absorber assemblies 2 are set at an angle, they can reduce and isolate vibrations from impacts in different directions, thus better meeting the needs and usage scenarios of ships.

[0050] When the shock-absorbing piston rod 202 retracts inward under impact, the liquid in the first connection port 2011 of the housing flows into the first connection port 2065 of the damper through the pipe. Under the selection action of the selector valve, it flows out from the corresponding second connection port 2061 of the damper, then enters the second connection port 2053 of the selector valve, flows through the variable resistance selector valve 205, and then flows out from the first connection port 2054 of the selector valve, passes through the hydraulic pipe, and enters the second connection port 2012 of the housing, thus completing the buffering and absorption of impact energy. At this time, the variable resistance drive rack 2021 and the variable resistance gear 2031 mesh together to form a gear and rack transmission mechanism, and the shock-absorbing piston rod 202 is driven by the gear and rack transmission mechanism. The variable resistance gear 2031 rotates, and the variable resistance worm 203 drives the variable resistance worm wheel 204 to rotate through the worm gear transmission mechanism. The variable resistance worm wheel 204 drives the valve core 2051 of the selector valve to rotate. When the selector valve connection port 2052 is aligned with the second connection port 2053 of the different selector valves, the corresponding second connection port 2053 of the selector valve is connected to the first connection port 2054 of the selector valve. Then, the oil enters the corresponding second connection port 2061 of the damper and then enters the corresponding damping pipe 2062. Under the action of the damping plate 2066, the oil speed is slowed down, the flow damping is increased, and the kinetic energy of the oil is dissipated in the form of heat, thereby achieving the purpose of reducing vibration.

[0051] During the rebound process, the oil in the upper part of the piston flows out from the second connection port 2012 of the housing, flows through the hydraulic pipeline and enters the first connection port 2054 of the selector valve. Under the selection action of the selector valve, the corresponding second connection port 2053 of the selector valve flows out and enters the corresponding second connection port 2061 of the damper through the hydraulic pipeline. Then the oil flows out from the first connection port 2065 of the damper, enters the first connection port 2011 of the housing through the hydraulic pipeline, and flows back to the bottom of the piston.

[0052] When the shock-absorbing piston rod 202 is impacted and extends outward, the variable resistance drive rack 2021 and the variable resistance gear 2031 move away from each other. Therefore, the variable resistance selection valve 205 does not participate in the work, and the damping pipe 2062 with the least damping in the hydraulic damper 206 works.

Claims

1. A modular vibration isolation device for ship cabin instruments, characterized in that, include: The lower mounting base (1) has mounting holes at its bottom; the top outer circumferential array of the lower mounting base (1) is connected to three shock absorber assemblies (2), and the tops of the three shock absorber assemblies (2) are simultaneously connected to the instrument mounting base (3) via hinges. The top mounting base (5) has a mounting hole on its top; the bottom of the top mounting base (5) is arranged in a circular array and hinged to three shock absorber assemblies (2), and the bottom of the three shock absorber assemblies (2) is simultaneously hinged to the top of the instrument mounting base (3). The vibration isolation pad (4) is fixedly connected to the upper surface of the instrument mounting base (3). The instrument mounting base (3) and the vibration isolation pad (4) are provided with mounting holes with different hole spacing and positions.

2. The modular ship cabin instrument vibration isolation device as described in claim 1, characterized in that: The three shock absorber assemblies (2) above are offset from the three shock absorber assemblies (2) below, and the shock absorber assemblies (2) are installed at an outward tilt of 45 degrees.

3. The modular ship cabin instrument vibration isolation device as described in claim 1, characterized in that: The shock absorber assembly (2) includes a shock absorber housing (201) and a shock absorber piston rod (202); the shock absorber piston rod (202) is slidably connected inside the shock absorber housing (201) to form a piston cylinder structure; a shock absorber spring is provided inside the shock absorber housing (201); and the shock absorber piston rod (202) is elastically connected to the shock absorber housing (201) through the spring.

4. The modular ship cabin instrument vibration isolation device as described in claim 3, characterized in that: The shock absorber assembly (2) further includes a variable resistance selection valve (205) and a hydraulic damper (206). The variable resistance selection valve (205) and the hydraulic damper (206) are fixedly connected inside the shock absorber assembly (2). The shock absorber housing (201), the variable resistance selection valve (205), and the hydraulic damper (206) are connected by hydraulic pipes to form a variable resistance mechanism.

5. The modular ship cabin instrument vibration isolation device as described in claim 4, characterized in that: The variable resistance mechanism includes: The second connection port (2012) of the housing is located on the upper part of the shock-absorbing outer shell (201); The first connection port (2054) of the selector valve is located at the end of the variable resistance selector valve (205), and the second connection port (2012) of the housing is connected to the first connection port (2054) of the selector valve through a hydraulic pipeline; Selector valve second connection port (2053), the selector valve second connection port (2053) is provided with multiple pieces, and the multiple selector valve second connection ports (2053) are arranged in a circumferential array on the outside of the variable resistance selector valve (205); The damper second connection port (2061) is provided in multiple pieces. The multiple damper second connection ports (2061) are arranged in an array on the side of the hydraulic damper (206). The damper second connection ports (2061) correspond one-to-one with the selector valve second connection port (2053) and are connected through hydraulic pipes. The first connection port (2065) of the damper is located at the lower rear part of the hydraulic damper (206); The first connection port (2011) of the housing is located at the lower part of the shock-absorbing outer shell (201).

6. The modular ship cabin instrument vibration isolation device as described in claim 5, characterized in that: The variable resistance mechanism includes: A variable resistance drive rack (2021) is fixedly connected to the upper side of the shock-absorbing piston rod (202); A variable resistance worm gear (203) is rotatably connected to the inside of the shock absorber assembly (2); A variable resistance gear (2031) is coaxially fixedly connected to the end of a variable resistance worm (203). A variable resistance drive rack (2021) is located on the upper part of the variable resistance gear (2031). When the variable resistance drive rack (2021) meshes with the variable resistance gear (2031), the variable resistance drive rack (2021) and the variable resistance gear (2031) together constitute a gear and rack transmission mechanism.

7. The modular ship cabin instrument vibration isolation device as described in claim 6, characterized in that: The variable resistance mechanism also includes: A variable-resistance worm gear (204) is rotatably connected to the inside of the shock absorber assembly (2). The variable-resistance worm (203) meshes with the variable-resistance worm gear (204) to form a worm gear transmission mechanism.

8. The modular ship cabin instrument vibration isolation device as described in claim 7, characterized in that: The variable resistance mechanism also includes: Select valve core (2051), which is rotatably connected inside the variable resistance select valve (205), and the select valve core (2051) is coaxially and fixedly connected to the variable resistance worm gear (204); Selector valve connection port (2052), which is located on the side of the selector valve core (2051).

9. The modular ship cabin instrument vibration isolation device as described in claim 8, characterized in that: The hydraulic damper (206) is provided with multiple sets of damping pipes (2062) inside. The multiple sets of damping pipes (2062) are respectively connected to multiple sets of second connection ports (2061) of the damper. The multiple sets of damping pipes (2062) are simultaneously connected to the first connection port (2065) of the damper. The length and diameter of the multiple sets of damping pipes (2062) are different.

10. The modular ship cabin instrument vibration isolation device as described in claim 9, characterized in that: The damping conduit (2062) includes: Damping plate (2066), the damping plate (2066) is evenly arranged and fixedly connected inside the damping pipe (2062), the damping plate (2066) is inclined and the damping plate (2066) faces the second connection port (2061) of the damper.

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