Cabin raft vibration isolation device and method based on multi-physical coupling

Abstract

The invention relates to the technical field of ship vibration isolation, discloses a cabin raft vibration isolation device and method based on multi-physical coupling, and solves the problem of poor vibration isolation effect. The cabin raft vibration isolation device comprises a shell, a plurality of bases are fixed in the shell, a fixing sleeve is arranged at the top of each base, an electromagnet is installed in each fixing sleeve in an interference fit mode, and the electromagnet is fixed to the shell. An electromagnetic actuator is arranged at the top of each electromagnet, a middle panel is arranged at the tops of the electromagnetic actuators, two sets of piezoelectric patches are fixed to the top of the middle panel, two units are arranged at the top of the middle panel, and a plurality of upper-layer vibration isolators and auxiliary vibration isolation pipes are arranged at the bottom of each unit; according to the device, vibration energy of a unit can be converted into electric energy to be consumed through the piezoelectric plate, so that the purpose of vibration reduction is achieved, the rigidity of the piezoelectric material can be controlled by adjusting parameters of elements such as a resistor and a capacitor of an external circuit, then accurate control over vibration is achieved, and therefore the vibration isolation efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of ship vibration isolation, and in particular relates to a cabin raft vibration isolation device and method based on multi-physics coupling. Background Art

[0002] The raft vibration isolation device is a vibration isolation and noise reduction device used on ships. It can reduce the machine vibration transmitted from the excitation source of the unit in the marine power equipment to the equipment casing, and achieve vibration isolation and noise reduction. In recent years, with the development trend of large-scale and high-speed ships, the vibration intensity of the power equipment on board has greatly increased, which has put forward higher requirements for the vibration isolation technology of ships. The vibration of ships comes from many factors. When the ship is sailing, the waves, wind, various power equipment on board, and the exciting force of the propeller will cause the hull to vibrate to varying degrees.

[0003] In order to reduce ship vibration, improve the human-machine environment, improve the quality of life and work of crew members and passengers, and extend the service life of equipment, the vibration transmitted from the equipment to the structure must be effectively controlled. At present, the common vibration isolation devices in the power compartment of ships are mostly passive vibration isolation systems. Although the passive vibration isolation system has a simple structure, its vibration isolation transmission rate is fixed after the design is completed, and it can only produce a good suppression effect on the excitation source within a specific range. Therefore, in order to meet higher vibration isolation requirements, it is necessary to develop a more advanced and flexible vibration isolation device.

[0004] In recent years, piezoelectric smart materials have been widely used in the field of noise and vibration control. Piezoelectric shunt technology uses piezoelectric smart materials to convert the energy of controlled noise or vibration into electrical signals through piezoelectric elements, and use the electrical signals for control. It can be combined with the principle of control for active control, passive control or semi-active control, and it also helps to simplify and lighten the control system. Therefore, the application of piezoelectric shunt technology in noise and vibration control is becoming more and more important. In view of the limitations of traditional vibration isolators, it is necessary to introduce more efficient and flexible vibration isolation technology. As a new type of vibration isolation technology, electromagnetic devices have significant vibration isolation performance and flexibility advantages, so they are widely used in floating raft vibration isolation systems. Under the multiple demands of more flexible vibration isolation control requirements and acoustic requirements, the floating raft vibration isolation system is developing in the direction of integration with piezoelectric shunt technology and electromagnetic devices, and gradually evolving into a multi-physics coupled cabin raft vibration isolation system.

[0005] However, most of the existing vibration isolation devices are passive vibration isolation, which results in poor vibration isolation effect. At the same time, when the existing vibration isolation devices are in use, the vibration isolation devices will fail due to long-term vibration of the unit, resulting in poor vibration isolation effect. Therefore, the present invention proposes a cabin raft vibration isolation device and method based on multi-physics coupling to solve the above problems. Summary of the invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a cabin raft vibration isolation device and method based on multi-physics coupling, which effectively solves the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cabin raft vibration isolation device based on multi-physics coupling, comprising a shell, a plurality of bases are fixed inside the shell, a fixing sleeve is provided on the top of each base, an electromagnet is installed in each fixing sleeve by interference fit, a secondary coil disk is provided on the top of each electromagnet, a main coil disk is provided on the top of each secondary coil disk, an electromagnetic actuator is provided on the top of each main coil disk, an electromagnetic actuator rod is fixed on the top of each electromagnetic actuator, a top plate is fixed on the top of each electromagnetic actuator rod, a plurality of electromagnetic actuator rods are fastened with middle panels by bolts, an air intake pipe is fixed on the inner side of each fixing sleeve, a nitrogen tank is fixed on the bottom of the air intake pipe, an air outlet pipe is provided at the rear end of the air intake pipe and the The nitrogen tank is fixedly connected, and the other end of the air outlet pipe is fixedly connected to the fixed sleeve. Two acceleration sensors are fixed on the top of the middle panel, and two groups of piezoelectric sheets are fixed on the top of the middle panel. A negative capacitance piezoelectric shunt damping circuit is connected to the piezoelectric sheet. Two units are arranged on the top of the middle panel, and a support plate is fixed at the bottom of each unit. A plurality of upper vibration isolators are arranged at the bottom of each support plate, and an upper vibration isolator positioning plate is fixed at the bottom of each upper vibration isolator. An upper vibration isolation rod is fixed inside each upper vibration isolator, and an auxiliary vibration isolation tube is also arranged on the inner side of each upper vibration isolator, and a locking block positioning tube is fixed inside each auxiliary vibration isolation tube, and a locking block is arranged outside each locking block positioning tube, and a movable plate is arranged on the top of each auxiliary vibration isolation tube.

[0008] Preferably, a plurality of shell beams are fixed inside the shell, a controller is fixed on the inner side of one of the bases, a positioning bar is fixed on the bottom of the middle panel, the lower end of each auxiliary vibration isolation tube is slidably connected to the middle panel, a support plate is fixed on the outer end of each auxiliary vibration isolation tube, the top of each support plate is tightly attached to the middle panel, an auxiliary vibration isolation bar is fixed to the outside of each auxiliary vibration isolation tube, and an auxiliary vibration isolation spring is provided on the outside of each auxiliary vibration isolation tube.

[0009] Preferably, each of the auxiliary vibration isolation tubes is slidably connected to the outside with a positioning plate, the bottom of each positioning plate is tightly fitted with the support plate, a locking block spring is fixed to the top of each auxiliary vibration isolation tube, each locking block spring is fixedly connected to the movable plate at its top, a plurality of locking block moving rods are also fixed to the bottom of each movable plate, and a locking block moving head is fixed to the bottom of each locking block moving rod.

[0010] Preferably, the upper end of each auxiliary vibration isolation tube is fixedly connected to the locking block positioning tube, a locking block positioning cavity is provided on the outside of each locking block positioning tube, a locking block moving shaft is slidably connected to the inside of each locking block positioning cavity, each locking block moving shaft is fixedly connected to the locking block at its outer end, a locking block moving cavity is provided on each locking block, each locking block moving cavity can be slidably connected to the locking block moving rod inside it, a locking block moving spring is fixed on the inside of each locking block, each locking block moving spring is fixedly connected to the locking block positioning tube inside it, and each locking block can fit tightly with the positioning plate.

[0011] Preferably, the support plate is fastened to the upper vibration isolation rod at its bottom by bolts, a vibration isolation cavity is provided at the bottom of each upper vibration isolator, a vibration isolation strip is fixed to the upper end of each upper vibration isolator, and the bottom of each upper vibration isolator positioning plate is fastened to the middle panel by bolts.

[0012] Preferably, the bottom of the middle panel is fastened with several top plates by bolts, each of the top plates is fixedly connected to the electromagnetic actuating rod at its bottom, the top of each fixed sleeve is fastened with a limiting plate by bolts, and a sealing ring is also fixed on the top of each limiting plate, and each sealing ring is fixedly connected to the top plate at its top.

[0013] Preferably, an external wire is fixed on the inner side of the lower end of each fixed sleeve, two connecting wires are fixed on the inner side of each external wire, a connecting rod is fixed on the top of each connecting wire, a connecting head is fixed on the top of each connecting rod, and each connecting head can be tightly attached to the power supply point inside the main coil disk and the auxiliary coil disk.

[0014] Preferably, a limit rod is fixed at the bottom of each main coil disk, a limit spring is provided on the outside of each limit rod, each limit rod is slidably connected to the electromagnet at its bottom, a replacement plate is fixed at the bottom of each connecting rod, a locking plate is fixed at the bottom of each replacement plate, a support spring is fixed at the bottom of each locking plate, a support bar is fixed to the inside of each electromagnet, each support bar is fixedly connected to the support spring at its top, a locking head is also fixed to the top of each support bar, a replacement head is rotatably connected to the inside of each replacement plate, and the top of each replacement head is fixedly connected to the replacement plate through a reset spring.

[0015] Preferably, a cooling pipe is also provided on the inner side of each fixed sleeve and is fixedly connected to the air intake pipe, a cooling box is fixed on the outside of each cooling tube, an acceleration box is fixed on the inside of each cooling tube, an acceleration motor is fixed inside each acceleration box, an acceleration fan is rotatably connected to the outside of each acceleration motor, an air intake valve is also fixed on the outside of each air intake pipe, an air pump is provided on the top of each nitrogen tank and is fixedly connected to the air intake pipe, a condensation box is fixed on the outer end of each cooling box through a pipeline, a condensation pipe is fixed inside each condensation box, both ends of each condensation pipe are fixedly connected to the air outlet pipe, a water outlet is fixed at the bottom of each condensation pipe, an air outlet valve is fixed on the outside of each air outlet pipe, a temperature sensor is fixed on the inside of each air outlet valve, and a nitrogen content monitor is fixed on the inside of each temperature sensor.

[0016] The present invention also provides a cabin raft vibration isolation method based on multi-physics coupling, based on the cabin raft vibration isolation device based on multi-physics coupling as described above, comprising the following steps: Step 1: Before using the device, the staff assembles the entire device. At this time, the bottom connecting ring is fixedly connected to the base by bolts, and the top plate is fixedly connected to the middle panel by bolts. The upper isolator positioning plate is further fixedly connected to the middle panel by bolts, and the support plate is fixedly connected to the upper isolation rod by positioning bolts. The staff further fixes the nitrogen tank by bolts; Step 2: The staff further inserts several auxiliary vibration isolation tubes into the middle panel and the support plate in turn, and further installs positioning plates on the outside of each auxiliary vibration isolation tube in turn. At this time, the staff presses the moving plate, so that each locking block moves inward, thereby facilitating the lowering of the positioning plate. Further, when the positioning plate is close to the support plate, the staff loosens the moving plate, which pushes the locking block to move outward, so that the positioning plate remains stable; Step 3: When the unit starts to work, vibration will be generated. At this time, the upper vibration isolator, vibration isolation strips, and upper vibration isolation rods can cooperate to perform preliminary vibration isolation work. At the same time, when the upper vibration isolator fails, the auxiliary vibration isolation spring and auxiliary vibration isolation tube can perform passive supplementary vibration isolation, thereby ensuring the vibration isolation effect; Step 4: At the same time, the device converts the mechanical energy generated by the vibration into electrical energy for the entire device through the negative capacitance piezoelectric shunt damping circuit connected to the piezoelectric sheet, thereby achieving the purpose of vibration isolation and noise reduction. The controller further controls the electromagnet to work, thereby making the main coil disk work, and further transmitting the vibration data to the controller. At this time, the parameters of the main coil disk will be adjusted according to the measurement results of the acceleration sensor, thereby changing the electromagnetic force it generates, and realizing active suppression of vibration; Step 5: When the main coil disk fails, the electromagnetic actuator will be lowered to make the main coil disk lowered, so that the replacement plate will be lowered, so that the replacement head and the lock head are clamped, so that the wiring head and the wiring point of the auxiliary coil disk are closely attached, so that the auxiliary coil disk works, thereby ensuring the vibration isolation effect; Step 6: When the temperature sensor detects that the temperature inside the fixed sleeve is high, the controller controls the air pump, the air inlet valve, and the acceleration motor to transport the nitrogen cooled by the acceleration box to the inside of the fixed sleeve, and at the same time, the nitrogen is returned to the nitrogen tank through the outlet valve, thereby cooling the internal structure of the fixed sleeve and ensuring the safety of the entire device.

[0017] Compared with the prior art, the present invention has the following beneficial effects: (1) The device uses a fixed sleeve to position the electromagnet, and the electromagnet is used to position the main coil disk and the auxiliary coil disk. At the same time, the main coil disk and the auxiliary coil disk cooperate to make the electromagnetic actuator rise and fall, thereby achieving the purpose of active vibration isolation. At the same time, the sealing ring of the device can ensure the sealing of the electromagnetic actuator rod, thereby ensuring the safety of the electromagnetic actuator rod. At the same time, the device can make the main coil disk and the auxiliary coil disk work separately by lifting the terminal head, so that after the main coil disk fails, the auxiliary coil disk can work to ensure the normal operation of the electromagnetic actuator, thereby ensuring the active vibration isolation effect. The electromagnet of the device has nonlinear stiffness characteristics, so that the device can better adapt to the vibration reduction requirements under different working conditions and realize passive isolation of vibration. The parameters of the electromagnet are adjusted according to the measurement results of the acceleration sensor, thereby changing the electromagnetic force it generates and realizing active suppression of vibration. The electromagnet and the electromagnetic actuator rod combine the advantages of active vibration isolation and passive vibration isolation, realize effective control of vibration, and significantly improve the vibration isolation performance of the device; (2) The device uses a cooling box to transport the required nitrogen to the fixed sleeve, so that the fixed sleeve is filled with nitrogen, thereby ensuring the safety of the main coil disk and the auxiliary coil disk. At the same time, the air inside the air outlet pipe can be condensed through the condenser, and the condensed water can be discharged through the water outlet, thereby ensuring that there is only nitrogen inside the fixed sleeve, thereby ensuring the safety of the electromagnet. At the same time, the cooled nitrogen can be transported to the fixed sleeve through the cooperation of the air pump, cooling pipe and acceleration motor, thereby cooling the main coil disk and the auxiliary coil disk, thereby increasing the service life of the entire device; (3) The device can monitor the vibration of the unit by detecting the acceleration at both ends of the middle panel through the acceleration sensor, and further convert the vibration energy of the unit into electrical energy for consumption through the piezoelectric sheet, thereby achieving the purpose of vibration reduction. By adjusting the parameters of the resistor, capacitor and other components of the external circuit, the stiffness of the piezoelectric material can be controlled, thereby achieving precise control of the vibration, thereby improving the vibration isolation efficiency. The device can significantly attenuate vibration and improve vibration isolation performance. The capacitive reactance of the negative capacitor can offset the capacitive reactance of the piezoelectric sheet, and is suitable for a variety of vibration frequencies. The circuit is not easily affected by the external environment and has high stability and reliability. (4) The device is used for vibration isolation through the upper vibration isolator. At the same time, the vibration isolation effect of the upper vibration isolator can be ensured by the cooperation of the vibration isolation cavity, the vibration isolation bar and the upper vibration isolation rod. At the same time, since the auxiliary vibration isolation spring is elastic, the purpose of auxiliary vibration isolation can be achieved. Furthermore, due to the locking block moving shaft and the locking block moving spring, the locking block can be kept away from the locking block positioning tube. Furthermore, due to the action of the locking block moving rod and the locking block moving head, the locking block can be pushed inward, thereby facilitating the movement of the positioning plate, thereby adapting to support plates of different thicknesses, thereby increasing the use range of the entire device; (5) The device can work when the main coil disk is not subjected to force through the limit rod and the limit spring. Furthermore, when the main coil disk is damaged, the gravity of the electromagnetic actuator rod will cause the connecting rod to drop, so that the connecting head and the auxiliary coil disk are tightly attached due to the action of the locking head and the replacement head, so that the auxiliary coil disk can work after the main coil disk fails, thereby ensuring the vibration isolation effect and improving the service life of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0019] In the attached picture: Figure 1 This is a schematic diagram of the overall structure of the device; Figure 2 It is a schematic cross-sectional view of the whole device; Figure 3 This is a schematic diagram of the inside of the base of the device; Figure 4 This is a schematic diagram of the bottom of the middle panel of the device; Figure 5 This is a schematic diagram of the upper vibration isolator of the device; Figure 6 It is a cross-sectional schematic diagram of the upper vibration isolator of the device; Figure 7 This is a schematic diagram of the support plate of the device; Figure 8 This is a schematic diagram of the top of the auxiliary vibration isolation tube of the device; Fig. 9 This is a schematic diagram of the interior of the auxiliary vibration isolation tube of the device; Fig.10 This is a schematic diagram of the locking block of the device; Fig.11 This is a schematic diagram of the inner side of the fixed sleeve of the device; Fig.12 This is a schematic diagram of the interior of the air intake pipe of the device; Fig.13 This is a schematic diagram of the interior of the condensation box of the device; Fig.14 This is a schematic diagram of the interior of the fixed sleeve of the device; Fig.15 This is a schematic diagram of the top of the electromagnet of this device; Fig.16 This is a schematic diagram of the wiring pole of this device; Fig.17 This is a schematic diagram of the top of the lock of this device; Fig.18 Replace the top diagram of the head for this device; Fig.19 This is a schematic diagram of the negative capacitance piezoelectric shunt damping circuit of this device.

[0020] In the figure: 1-shell; 2-base; 3-nitrogen tank; 4-fixed sleeve; 5-upper vibration isolator; 6-movable plate; 7-acceleration box; 8-locking block; 9-electromagnet; 101-shell beam; 102-middle panel; 103-unit; 104-acceleration sensor; 105-piezoelectric sheet; 106-positioning strip; 107-support plate; 201-controller; 301-air pump; 302-cooling box; 303-intake pipe; 304 -intake valve; 305-exhaust pipe; 306-exhaust valve; 307-condensation box; 308-water outlet; 309-cooling pipe; 310-condensation pipe; 311-temperature sensor; 312-nitrogen content monitor; 401-top plate; 402-sealing ring; 403-limiting plate; 404-bottom connecting ring; 405-electromagnetic actuator rod; 406-electromagnetic actuator; 407-main coil disk; 408-secondary coil disk; 409 -limit rod; 410-limit spring; 501-upper vibration isolator positioning plate; 502-vibration isolation chamber; 503-vibration isolation bar; 504-upper vibration isolation rod; 505-positioning bolt; 601-auxiliary vibration isolation tube; 602-auxiliary vibration isolation spring; 603-auxiliary vibration isolation bar; 604-positioning plate; 605-support plate; 606-locking block moving rod; 607-locking block spring; 608-locking block moving head; 701-acceleration motor; 7 02-acceleration fan; 801-lock block positioning tube; 802-lock block moving shaft; 803-lock block moving cavity; 804-lock block moving spring; 805-lock block positioning cavity; 901-external wire; 902-connecting wire; 903-support bar; 904-locking head; 905-replacement head; 906-replacement plate; 907-connection rod; 908-connection head; 909-locking plate; 910-reset spring; 911-support spring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] Embodiment 1, by Figure 1-Figure 5 , Fig. 9 , Fig.11 , Fig.14 , Fig.16The present invention provides a cabin raft vibration isolation device based on multi-physics coupling, including a shell 1, the shell 1 is made of alloy material, the shell 1 is used to support the entire device, a plurality of bases 2 are fixed inside the shell 1, the base 2 is made of alloy material, the base 2 is used to support the fixing sleeve 4, each of the bases 2 is provided with a fixing sleeve 4 on the top, the fixing sleeve 4 is made of alloy material, the fixing sleeve 4 is used to position the electromagnet 9, each of the fixing sleeves 4 is installed with an electromagnet 9 in an interference fit inside, the electromagnet 9 is made of alloy material, the electromagnet 9 is used to position the main coil disk 407 and the auxiliary coil disk 408, each of the electromagnets 9 is provided with an auxiliary coil disk 408 on the top, and each of the auxiliary coils A main coil disk 407 is provided on the top of the disk 408. The main coil disk 407 and the auxiliary coil disk 408 cooperate to make the electromagnetic actuator 406 rise and fall, thereby achieving the purpose of active vibration isolation. An electromagnetic actuator 406 is provided on the top of each main coil disk 407. The electromagnetic actuator 406 can drive the electromagnetic actuator rod 405 to rise and fall through operation. An electromagnetic actuator rod 405 is fixed on the top of each electromagnetic actuator 406. The electromagnetic actuator rod 405 is made of alloy material. The electromagnetic actuator rod 405 is used to position the electromagnetic actuator 406. A top plate 401 is fixed on the top of each electromagnetic actuator rod 405. The top plate 401 is used to position the electromagnetic actuator rod 405. A plurality of electromagnetic actuator rods 405 are fixed on the top of the electromagnetic actuator rod 405. The top is fastened with an intermediate panel 102 by bolts, and the intermediate panel 102 is made of alloy material. The intermediate panel 102 is used to support the unit 103. An air intake pipe 303 is fixed on the inner side of each fixed sleeve 4. The cooling box 302 is used to transport the required nitrogen to the fixed sleeve 4, so that the interior of the fixed sleeve 4 is filled with nitrogen, thereby ensuring the safety of the main coil disk 407 and the auxiliary coil disk 408. A nitrogen tank 3 is fixed to the bottom of the air intake pipe 303. The nitrogen tank 3 is made of alloy material and is used to contain the required nitrogen. An air outlet pipe 305 is provided at the rear end of the air intake pipe 303 and is fixedly connected to the nitrogen tank 3. The air outlet pipe 305 is used to discharge the nitrogen from the fixed sleeve 4. The other end of the air outlet pipe 305 is fixedly connected to the fixing sleeve 4. Two acceleration sensors 104 are fixed on the top of the middle panel 102. The acceleration sensors 104 can monitor the vibration of the unit 103 by detecting the acceleration at both ends of the middle panel 102. Two groups of piezoelectric sheets 105 are fixed on the top of the middle panel 102. The piezoelectric sheets 105 are a crystal material device with piezoelectric effect, which can realize efficient conversion between electrical energy and mechanical energy. The piezoelectric sheets 105 utilize the special properties of piezoelectric materials to convert the vibration energy of the structure into electrical energy for consumption, thereby achieving the purpose of vibration reduction. By adjusting the parameters of the components such as the resistance and capacitance of the external circuit, the stiffness of the piezoelectric material can be controlled, thereby realizing precise control of the vibration.The piezoelectric sheet 105 is connected to a negative capacitance piezoelectric shunt damping circuit. Two units 103 are arranged on the top of the middle panel 102. A support plate 107 is fixed to the bottom of each unit 103. The support plate 107 is made of alloy material and is used to position the unit 103. A plurality of upper vibration isolators 5 are arranged at the bottom of each support plate 107. The upper vibration isolators 5 are made of rubber material and are used for vibration isolation. An upper vibration isolator positioning plate 501 is fixed to the bottom of each upper vibration isolator 5. The upper vibration isolator positioning plate 501 is made of rubber material and is used to position the upper vibration isolator 5. An upper vibration isolation rod 504 is fixed inside each upper vibration isolator 5. The upper vibration isolation rod 504 is made of rubber material. The upper vibration isolation rod 504 is used to connect the upper vibration isolator 5 and the positioning bolt 505. An auxiliary vibration isolation tube 601 is also provided inside each upper vibration isolator 5. The auxiliary vibration isolation tube 601 is made of alloy material. The auxiliary vibration isolation tube 601 is used to position the locking block positioning tube 801. A locking block positioning tube 801 is fixed inside each auxiliary vibration isolation tube 601. The locking block positioning tube 801 is made of alloy material. The locking block positioning tube 801 is used to position the locking block 8. A locking block 8 is provided outside each locking block positioning tube 801. The locking block 8 is made of alloy material. The locking block 8 is used to position the positioning plate 604. A movable plate 6 is provided on the top of each auxiliary vibration isolation tube 601. The movable plate 6 is made of alloy material. The movable plate 6 is used to position the locking block movable rod 606.

[0023] Embodiment 2, based on embodiment 1, Figure 8 , Fig.10 , Figure 12-13It is given that a plurality of shell beams 101 are fixed inside the shell 1, and the shell beams 101 are made of alloy material. The shell beams 101 can ensure the stability of the shell 1, and a controller 201 is fixed on the inner side of one of the bases 2, and the controller 201 is used to control the entire device, and a positioning bar 106 is fixed to the bottom of the middle panel 102, and the positioning bar 106 is made of alloy material. The positioning bar 106 is used to position the auxiliary vibration isolation tube 601, and the lower end of each auxiliary vibration isolation tube 601 is slidably connected to the middle panel 102, and a support plate 605 is fixed to the outer end of each auxiliary vibration isolation tube 601, and the support plate 605 is made of alloy material. The support plate 605 is used to position the auxiliary vibration isolation tube 601. The top of each support plate 605 is in close contact with the middle panel 102, an auxiliary vibration isolation bar 603 is fixed to the outside of each auxiliary vibration isolation tube 601, and the auxiliary vibration isolation bar 603 is made of alloy material. The auxiliary vibration isolation bar 603 is used to position the auxiliary vibration isolation tube 601, and an auxiliary vibration isolation spring 602 is arranged on the outside of each auxiliary vibration isolation tube 601. The auxiliary vibration isolation spring 602 is elastic, so as to achieve the purpose of auxiliary vibration isolation. A positioning plate 604 is slidably connected to the outside of each auxiliary vibration isolation tube 601, and the positioning plate 604 and the support plate 605 cooperate to position the support plate 107 and the auxiliary vibration isolation tube 601, and the bottom of each positioning plate 604 is in close contact with the support plate 107. A locking block spring 607 is fixed on the top of the auxiliary vibration isolation tube 601. The locking block spring 607 is elastic, so that the movable plate 6 is away from the auxiliary vibration isolation tube 601 when no force is applied. Each locking block spring 607 is fixedly connected to the movable plate 6 on its top. A plurality of locking block moving rods 606 are also fixed on the bottom of each movable plate 6. The locking block moving rods 606 are made of alloy material. The locking block moving rods 606 are used to position the locking block moving head 608. A locking block moving head 608 is fixed on the bottom of each locking block moving rod 606. The locking block moving head 608 is made of alloy material. The locking block moving head 608 is used to control the movement of the locking block 8. The upper end of each auxiliary vibration isolation tube 601 is connected to the locking block positioning tube 8 01 is fixedly connected, each of the locking block positioning tubes 801 is provided with a locking block positioning cavity 805 on the outside, and the locking block positioning cavity 805 is used to position the locking block moving shaft 802, and each of the locking block positioning cavities 805 is slidably connected with a locking block moving shaft 802 inside, and the locking block moving shaft 802 is made of alloy material, and the locking block moving shaft 802 is used to position the locking block 8, and each of the locking block moving shafts 802 is fixedly connected to the locking block 8 at its outer end, and each of the locking blocks 8 is provided with a locking block moving cavity 803, and the locking block moving cavity 803 facilitates the movement of the locking block moving head 608, and each of the locking block moving cavities 803 can be slidably connected with the locking block moving rod 606 inside it, and a locking block moving spring 804 is fixed on the inside of each of the locking blocks 8,The locking block moving spring 804 is elastic, so that the locking block 8 is away from the locking block positioning tube 801 when no force is applied. Each locking block moving spring 804 is fixedly connected to the locking block positioning tube 801 inside thereof, and each locking block 8 can fit tightly with the positioning plate 604. Before using the device, the staff assembles the entire device. At this time, the bottom connecting ring 404 is fixedly connected to the base 2 by bolts, and the top plate 401 is fixedly connected to the middle panel 102 by bolts. The upper isolator positioning plate 501 is further fixedly connected to the middle panel 102 by bolts, and the support plate 107 is fixedly connected to the upper vibration isolation rod 504 by the positioning bolts 505. The staff further fixes the nitrogen tank 3 by bolts, and further inserts a plurality of the auxiliary vibration isolation tubes 601 into the middle panel 102 and the support plate 107 in turn. Further, the staff installs the positioning plate 604 on the outside of each of the auxiliary vibration isolation tubes 601 in turn. At this time, the staff presses the movable plate 6, so that the locking block moving rod 606 and the locking block spring 607 descend, so that each locking block 8 moves inward, thereby facilitating the lowering of the positioning plate 604. Further, when the positioning plate 604 is close to the support plate 107, the staff relaxes the movable plate 6. At this time, due to the action of the locking block moving shaft 802 and the locking block moving spring 804, the locking block 8 will be pushed to move outward, so that the locking block 8 clamps the positioning plate 604, so that the positioning plate 604 remains stable.

[0024] Embodiment 3, based on embodiment 1, Figure 6-Figure 7It is given that the support plate 107 is fastened to the upper vibration isolation rod 504 at its bottom by bolts, and a vibration isolation cavity 502 is provided at the bottom of each upper vibration isolator 5, and the vibration isolation cavity 502 adopts an arched structure to ensure the vibration isolation effect. A vibration isolation bar 503 is fixed to the upper end of each upper vibration isolator 5, and the vibration isolation bar 503 is made of rubber material. The vibration isolation bar 503 further ensures the passive vibration isolation effect. The bottom of each upper vibration isolator positioning plate 501 is fastened to the middle panel 102 by bolts, and the bottom of the middle panel 102 is fastened with a plurality of top plates 401 by bolts. The top plates 401 are made of alloy material and are used to position the electromagnetic actuating rod 405. Each top The plate 401 is fixedly connected to the electromagnetic actuating rod 405 at the bottom thereof, and the top of each of the fixed sleeves 4 is fastened with a limit plate 403 by bolts. The limit plate 403 is made of alloy material and is used to limit the moving distance of the electromagnetic actuating rod 405. A sealing ring 402 is also fixed on the top of each of the limit plates 403. The sealing ring 402 is made of camera material and ensures the sealing of the fixed sleeve 4, thereby ensuring the safety of the electromagnetic actuating rod 405. Each of the sealing rings 402 is fixedly connected to the top plate 401 at its top. A cooling pipe 309 is also provided on the inner side of each of the fixed sleeves 4 and is fixedly connected to the intake pipe 303. The cooling pipe 309 is used to cool the nitrogen A cooling box 302 is fixed on the outside of each cooling tube 309, and the cooling box 302 is used to hold ethylene glycol aqueous solution. An acceleration box 7 is fixed on the inside of each cooling tube 309, and the acceleration box 7 is used to position the acceleration motor 701. An acceleration motor 701 is fixed inside each acceleration box 7, and the acceleration motor 701 can drive the acceleration fan 702 to rotate. The acceleration fan 702 is rotatably connected to the outside of each acceleration motor 701, and the acceleration fan 702 is used to accelerate the nitrogen inside the acceleration box 7, so as to ensure the cooling effect. An intake valve 304 is also fixed on the outside of each intake pipe 303, and the intake valve 304 can control the nitrogen to enter the fixed sleeve 4. An air pump 301 and The air inlet pipe 303 is fixedly connected, and the air pump 301 can transport the nitrogen in the nitrogen tank 3 to the cooling box 302. A condenser box 307 is fixed to the outer end of each cooling box 302 through a pipeline. The condenser box 307 is used to contain ethylene glycol aqueous solution. The cooling box 302 and the condenser box 307 are heat-insulated to prevent the temperature of the ethylene glycol aqueous solution from rising. A condenser tube 310 is fixed inside each condenser box 307. The condenser tube 310 is used to cool the gas output by the outlet pipe 305. Both ends of each condenser tube 310 are fixedly connected to the outlet pipe 305. A water outlet 308 is fixed at the bottom of each condenser tube 310. The water outlet 308 can discharge the condensed water of the condenser tube 310.Thereby ensuring that there is only nitrogen inside the fixed sleeve 4, thereby ensuring the safety of the electromagnet 9, an outlet valve 306 is fixed on the outside of each outlet pipe 305, and the outlet valve 306 can transport the gas inside the fixed sleeve 4 to the condenser 310, and a temperature sensor 311 is fixed on the inside of each outlet valve 306, and the temperature sensor 311 is used to monitor the temperature of the outlet pipe 305, so as to achieve the purpose of detecting the gas temperature inside the fixed sleeve 4, and a nitrogen content monitor 312 is fixed on the inside of each temperature sensor 311, and the nitrogen content monitor 312 is used to monitor the nitrogen content inside the outlet pipe 305, so as to ensure that the interior of the fixed sleeve 4 is full of nitrogen;, Further, the controller 201 controls the air pump 301, the air inlet valve 304, and the air outlet valve 306 to work in coordination, so that the nitrogen in the nitrogen tank 3 is transported to the interior of the fixed sleeve 4 through the air inlet pipe 303. At this time, the controller 201 can determine whether the interior of the fixed sleeve 4 is full of nitrogen according to the monitoring data of the nitrogen content monitor 312. If there is air in the fixed sleeve 4, it will be pushed to the interior of the condenser 310 through the air outlet pipe 305. At this time, the ethylene glycol aqueous solution in the condenser box 307 reduces the temperature of the condenser 310. At this time, due to the interaction between nitrogen and air, the temperature of the condenser 310 is reduced. The different boiling points will cause the air to condense into water droplets. At this time, the controller 201 controls the water outlet 308 to open, so that the water droplets fall. When the nitrogen content monitor 312 detects that the interior of the fixed sleeve 4 is full of nitrogen, the controller 201 controls the water outlet 308 to close, so that the nitrogen flows back into the nitrogen tank 3. When the unit 103 starts to work, vibration will be generated. At this time, the upper vibration isolator 5, the vibration isolation strip 503, and the upper vibration isolation rod 504 can cooperate to perform initial vibration isolation work. At the same time, when the upper vibration isolator 5 fails, the auxiliary vibration isolation spring 602 and the auxiliary vibration isolation spring 604 can be used to prevent the upper vibration isolator 5 from failing. The function of the vibration isolation tube 601 is to perform passive supplementary vibration isolation, thereby ensuring the vibration isolation effect. At the same time, the negative capacitance piezoelectric shunt damping circuit connected to the piezoelectric sheet 105 converts the mechanical energy generated by the vibration into electrical energy for use by the entire device, thereby achieving the purpose of vibration isolation and noise reduction. Further, the controller 201 controls the electromagnet 9 to work, thereby driving the main coil disk 407 to work, and further transmitting the vibration data to the controller 201. At this time, the parameters of the main coil disk 407 will be adjusted according to the measurement results of the acceleration sensor 104, thereby changing the electromagnetic force it generates, and achieving vibration. Active suppression, when the temperature sensor 311 detects that the temperature inside the fixed sleeve 4 is high, the controller 201 controls the air pump 301, the air inlet valve 304, and the acceleration motor 701 to cooperate to transport the nitrogen inside the nitrogen tank 3 to the inside of the cooling pipe 309, and then the cooling pipe 309 is cooled due to the ethylene glycol aqueous solution inside the cooling box 302, so that the cooled nitrogen can be transported to the inside of the fixed sleeve 4, and at the same time, the nitrogen is refluxed to the nitrogen tank 3 through the air outlet valve 306, so as to cool the internal structure of the fixed sleeve 4, thereby ensuring the safety of the entire device.

[0025] Embodiment 4, based on embodiment 1, Fig.15 , Figure 17-Figure 18It is given that an external wire 901 is fixed on the inner side of the lower end of each fixed sleeve 4, and the external wire 901 is used to deliver the required electric energy to the internal mechanism of the fixed sleeve 4. Two connecting wires 902 are fixed on the inner side of each external wire 901. A wiring rod 907 is fixed on the top of each connecting wire 902. The wiring rod 907 is made of copper material. The wiring rod 907 is used to position the wiring head 908. A wiring head 908 is fixed on the top of each wiring rod 907. The wiring head 908 is made of copper material. The wiring head 908 is convenient for delivering the required electric energy to the main coil disk 407 and the auxiliary coil disk 408. Each of the wiring heads 908 can be in close contact with the power supply points inside the main coil disk 407 and the auxiliary coil disk 408. A limiting rod 409 is fixed at the bottom of each main coil disk 407. The limiting rod 409 is made of alloy material. The limiting rod 409 is used to position the main coil disk 407 and the auxiliary coil disk 408. A limiting spring 410 is provided on the outside of each limiting rod 409. The limiting spring 410 is elastic, so that the main coil disk 407 is away from the auxiliary coil disk 408 when no force is applied. Each limiting rod 409 is slidably connected to the electromagnet 9 at its bottom. A more The replacement plate 906 is made of plastic material, and the replacement plate 906 is used to position the replacement head 905. A locking plate 909 is fixed at the bottom of each replacement plate 906, and the locking plate 909 is made of plastic material. The locking plate 909 is used to support the replacement head 905. A support spring 911 is fixed at the bottom of each locking plate 909, and the support spring 911 is elastic, so that the replacement plate 906 is away from the support bar 903 when no force is applied. A support bar 903 is fixed on the inner side of each electromagnet 9, and the support bar 903 is made of alloy material. The support bar 903 is used to support the The lock head 904, each of the support bars 903 is fixedly connected to the support spring 911 at the top thereof, and a lock head 904 is also fixed on the top of each of the support bars 903, and the lock head 904 adopts a boss structure, and the lock head 904 is made of alloy material, and the lock head 904 is convenient for clamping the replacement head 905, and each of the replacement plates 906 is internally rotatably connected with a replacement head 905, and the replacement head 905 is made of plastic material, and the top of each replacement head 905 is fixedly connected to the replacement plate 906 through a reset spring 910, and the reset spring 910 is elastic, so that the replacement head 905 remains horizontal when not under force; When the main coil disk 407 fails, the electromagnetic actuator 406 will drop due to gravity, thereby causing the main coil disk 407 to drop, thereby causing the replacement plate 906 to drop, and thereby causing the secondary coil disk 408 to drop. At this time, the terminal head 908 will drop, thereby causing the terminal rod 907 to drop. When the replacement head 905 is close to the replacement head 905, the replacement head 905 can be rotated due to the action of the reset spring 910, so that the replacement head 905 is engaged with the lock head 904. At this time, due to the action of the lock head 904, the terminal head 908 will be close to the connection point of the secondary coil disk 408, so that the secondary coil disk 408 can work, thereby ensuring that the entire device can continue to work when the main coil disk 407 fails, thereby ensuring the vibration isolation effect.

[0026] A cabin raft vibration isolation method based on multi-physics coupling of this embodiment is based on the cabin raft vibration isolation device based on multi-physics coupling as described above, and includes the following steps: Step 1: Before using the device, the staff assembles the entire device. At this time, the bottom connecting ring 404 is fixedly connected to the base 2 by bolts, and the top plate 401 is fixedly connected to the middle panel 102 by bolts, and the upper isolator positioning plate 501 is fixedly connected to the middle panel 102 by bolts, and the support plate 107 is fixedly connected to the upper vibration isolation rod 504 by positioning bolts 505. The staff further fixes the nitrogen tank 3 by bolts; Step 2: The staff further inserts a plurality of auxiliary vibration isolation tubes 601 into the middle panel 102 and the support plate 107 in turn, and further the staff installs a positioning plate 604 on the outside of each auxiliary vibration isolation tube 601 in turn. At this time, the staff presses the movable plate 6, so that each locking block 8 moves inward, thereby facilitating the lowering of the positioning plate 604. Further, when the positioning plate 604 is close to the support plate 107, the staff loosens the movable plate 6, which pushes the locking block 8 to move outward, so that the positioning plate 604 remains stable. Step 3: When the unit 103 starts to work, vibration will be generated. At this time, the upper vibration isolator 5, the vibration isolation bar 503, and the upper vibration isolation rod 504 can cooperate to perform preliminary vibration isolation work. At the same time, when the upper vibration isolator 5 fails, the auxiliary vibration isolation spring 602 and the auxiliary vibration isolation tube 601 can perform passive supplementary vibration isolation, thereby ensuring the vibration isolation effect; Step 4: At the same time, the device converts the mechanical energy generated by the vibration into electrical energy for the entire device through the negative capacitance piezoelectric shunt damping circuit connected to the piezoelectric sheet 105, thereby achieving the purpose of vibration isolation and noise reduction. The controller 201 further controls the electromagnet 9 to work, so that the main coil disk 407 works, and further transmits the vibration data to the controller 201. At this time, the parameters of the main coil disk 407 will be adjusted according to the measurement results of the acceleration sensor 104, thereby changing the electromagnetic force it generates, and realizing active suppression of vibration; Step 5: When the main coil disk 407 fails, the electromagnetic actuator 406 will be lowered, so that the main coil disk 407 is lowered, and the replacement plate 906 is lowered, so that the replacement head 905 is engaged with the lock head 904, so that the connection head 908 is closely attached to the connection point of the auxiliary coil disk 408, so that the auxiliary coil disk 408 works, thereby ensuring the vibration isolation effect; Step 6: When the temperature sensor 311 detects that the internal temperature of the fixed sleeve 4 is high, the controller 201 controls the air pump 301, the air inlet valve 304, and the acceleration motor 701 to cooperate to deliver the nitrogen gas cooled by the acceleration box 7 to the inside of the fixed sleeve 4, and at the same time, the nitrogen gas is refluxed to the nitrogen tank 3 through the outlet valve 306, thereby cooling the internal structure of the fixed sleeve 4, thereby ensuring the safety of the entire device.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cabin raft vibration isolation device based on multi-physics coupling, characterized in that: The invention comprises a shell (1), wherein a plurality of bases (2) are fixed inside the shell (1), a fixing sleeve (4) is provided on the top of each base (2), an electromagnet (9) is installed in an interference fit inside each fixing sleeve (4), a secondary coil disk (408) is provided on the top of each electromagnet (9), a primary coil disk (407) is provided on the top of each secondary coil disk (408), an electromagnetic actuator (406) is provided on the top of each primary coil disk (407), and a magnetic actuator (406) is provided on the top of each electromagnetic actuator (406). An electromagnetic actuating rod (405) is fixed, a top plate (401) is fixed on the top of each electromagnetic actuating rod (405), a plurality of electromagnetic actuating rods (405) are fastened to an intermediate panel (102) on the top by bolts, an air inlet pipe (303) is fixed on the inner side of each fixing sleeve (4), a nitrogen tank (3) is fixed on the bottom of the air inlet pipe (303), an air outlet pipe (305) is provided at the rear end of the air inlet pipe (303) and is fixedly connected to the nitrogen tank (3), and the air outlet pipe (305) is provided at the other end. The end is fixedly connected to the fixing sleeve (4), two acceleration sensors (104) are fixed on the top of the middle panel (102), two groups of piezoelectric sheets (105) are fixed on the top of the middle panel (102), and a negative capacitance piezoelectric shunt damping circuit is connected to the piezoelectric sheets (105), two units (103) are arranged on the top of the middle panel (102), a support plate (107) is fixed on the bottom of each unit (103), and a plurality of upper vibration isolation layers are arranged on the bottom of each support plate (107). An upper vibration isolator (5) is provided with an upper vibration isolator positioning plate (501) fixed at the bottom of each upper vibration isolator (5), an upper vibration isolation rod (504) is fixed inside each upper vibration isolator (5), an auxiliary vibration isolation tube (601) is also provided on the inside of each upper vibration isolator (5), a locking block positioning tube (801) is fixed inside each auxiliary vibration isolation tube (601), a locking block (8) is provided on the outside of each locking block positioning tube (801), and a movable plate (6) is provided on the top of each auxiliary vibration isolation tube (601).

2. The raft vibration isolation device based on multi-physics coupling according to claim 1 is characterized in that: A plurality of shell beams (101) are fixed inside the shell (1), a controller (201) is fixed inside one of the bases (2), a positioning strip (106) is fixed at the bottom of the middle panel (102), the lower end of each auxiliary vibration isolation tube (601) is slidably connected to the middle panel (102), a support plate (605) is fixed at the outer end of each auxiliary vibration isolation tube (601), the top of each support plate (605) is in close contact with the middle panel (102), an auxiliary vibration isolation strip (603) is fixed outside each auxiliary vibration isolation tube (601), and an auxiliary vibration isolation spring (602) is provided outside each auxiliary vibration isolation tube (601).

3. The cabin raft vibration isolation device based on multi-physics coupling according to claim 2 is characterized in that: Each auxiliary vibration isolation tube (601) is slidably connected to a positioning plate (604) on the outside, and the bottom of each positioning plate (604) is tightly fitted with the support plate (107). A locking block spring (607) is fixed to the top of each auxiliary vibration isolation tube (601), and each locking block spring (607) is fixedly connected to the movable plate (6) at its top. A plurality of locking block moving rods (606) are also fixed to the bottom of each movable plate (6), and a locking block moving head (608) is fixed to the bottom of each locking block moving rod (606).

4. The cabin raft vibration isolation device based on multi-physics coupling according to claim 3 is characterized in that: The upper end of each auxiliary vibration isolation tube (601) is fixedly connected to the locking block positioning tube (801); a locking block positioning cavity (805) is provided on the outside of each locking block positioning tube (801); a locking block moving shaft (802) is slidably connected inside each locking block positioning cavity (805); each locking block moving shaft (802) is fixedly connected to the locking block (8) at its outer end; each locking block (8) is provided with a locking block moving cavity (803); each locking block moving cavity (803) can be slidably connected to the locking block moving rod (606) inside it; a locking block moving spring (804) is fixedly provided on the inside of each locking block (8); each locking block moving spring (804) is fixedly connected to the locking block positioning tube (801) inside it; and each locking block (8) can fit tightly with the positioning plate (604).

5. The cabin raft vibration isolation device based on multi-physics coupling according to claim 1 is characterized in that: The support plate (107) is fastened to the upper vibration isolation rod (504) at the bottom thereof by bolts, a vibration isolation cavity (502) is provided at the bottom of each upper vibration isolator (5), a vibration isolation strip (503) is fixed at the upper end of each upper vibration isolator (5), and the bottom of each upper vibration isolator positioning plate (501) is fastened to the middle panel (102) by bolts.

6. The cabin raft vibration isolation device based on multi-physics coupling according to claim 5 is characterized in that: The bottom of the middle panel (102) is fastened with a plurality of top plates (401) by bolts, each of the top plates (401) is fixedly connected to the electromagnetic actuating rod (405) at its bottom, the top of each fixed sleeve (4) is fastened with a limit plate (403) by bolts, a sealing ring (402) is also fixed to the top of each limit plate (403), and each sealing ring (402) is fixedly connected to the top plate (401) at its top.

7. The cabin raft vibration isolation device based on multi-physics coupling according to claim 6 is characterized by: An external wire (901) is fixed to the inner side of the lower end of each fixing sleeve (4), two connecting wires (902) are fixed to the inner side of each external wire (901), a connecting rod (907) is fixed to the top of each connecting wire (902), a connecting head (908) is fixed to the top of each connecting rod (907), and each connecting head (908) can be closely attached to the power supply point inside the main coil disk (407) and the auxiliary coil disk (408).

8. The cabin raft vibration isolation device based on multi-physics coupling according to claim 7 is characterized in that: A limiting rod (409) is fixed at the bottom of each main coil disk (407), a limiting spring (410) is provided on the outside of each limiting rod (409), each limiting rod (409) is slidably connected to the electromagnet (9) at the bottom thereof, a replacement plate (906) is fixed at the bottom of each connection rod (907), a locking plate (909) is fixed at the bottom of each replacement plate (906), a supporting spring (911) is fixed at the bottom of each locking plate (909), a supporting bar (903) is fixed on the inner side of each electromagnet (9), each supporting bar (903) is fixedly connected to the supporting spring (911) at the top thereof, and a locking head (904) is also fixed at the top of each supporting bar (903), a replacement head (905) is rotatably connected inside each replacement plate (906), and the top of each replacement head (905) is fixedly connected to the replacement plate (906) via a return spring (910).

9. The cabin raft vibration isolation device based on multi-physics coupling according to claim 8, characterized in that: Each of the fixed sleeves (4) is also provided with a cooling tube (309) on the inside thereof and fixedly connected to the air intake pipe (303); a cooling box (302) is fixedly provided on the outside of each of the cooling tubes (309); an acceleration box (7) is fixedly provided on the inside of each of the cooling tubes (309); an acceleration motor (701) is fixedly provided on the inside of each of the acceleration boxes (7); an acceleration fan (702) is rotatably connected to the outside of each of the acceleration motors (701); an air intake valve (304) is also fixedly provided on the outside of each of the air intake pipes (303); and an air pump (301) is provided on the top of each of the nitrogen tanks (3) and connected to the air intake pipe (303). The cooling boxes (302) are fixedly connected, with a condensing box (307) being fixedly connected to the outer end thereof via a pipeline, a condensing tube (310) being fixedly connected to the interior of each condensing box (307), both ends of each condensing tube (310) being fixedly connected to the air outlet pipe (305), a water outlet (308) being fixedly connected to the bottom of each condensing tube (310), an air outlet valve (306) being fixedly connected to the exterior of each air outlet pipe (305), a temperature sensor (311) being fixedly connected to the interior of each air outlet valve (306), and a nitrogen content monitor (312) being fixedly connected to the interior of each temperature sensor (311).

10. A method for raft vibration isolation based on multi-physics coupling, based on a raft vibration isolation device based on multi-physics coupling according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Before using the device, the staff assembles the entire device. At this time, the bottom connecting ring (404) is fixedly connected to the base (2) by bolts, and the top plate (401) is fixedly connected to the middle panel (102) by bolts. The upper vibration isolator positioning plate (501) is further fixedly connected to the middle panel (102) by bolts, and the support plate (107) is fixedly connected to the upper vibration isolation rod (504) by positioning bolts (505). The staff further fixes the nitrogen tank (3) by bolts. Step 2: The staff further inserts a plurality of auxiliary vibration isolation tubes (601) into the middle panel (102) and the support plate (107) in turn, and further the staff installs a positioning plate (604) on the outside of each auxiliary vibration isolation tube (601) in turn. At this time, the staff presses the movable plate (6) so that each locking block (8) moves inward, thereby facilitating the lowering of the positioning plate (604). When the positioning plate (604) is in close contact with the support plate (107), the staff releases the movable plate (6), which pushes the locking block (8) to move outward, thereby keeping the positioning plate (604) stable. Step 3: When the unit (103) starts to work, vibration will be generated. At this time, the upper vibration isolator (5), the vibration isolation strip (503), and the upper vibration isolation rod (504) can cooperate to perform preliminary vibration isolation work. At the same time, when the upper vibration isolator (5) fails, the auxiliary vibration isolation spring (602) and the auxiliary vibration isolation tube (601) can perform passive supplementary vibration isolation, thereby ensuring the vibration isolation effect. Step 4: At the same time, the device converts the mechanical energy generated by the vibration into electrical energy for use by the entire device through the negative capacitance piezoelectric shunt damping circuit connected to the piezoelectric sheet (105), thereby achieving the purpose of vibration isolation and noise reduction. The controller (201) further controls the electromagnet (9) to work, thereby making the main coil disk (407) work, and further transmits the vibration data to the controller (201). At this time, the parameters of the main coil disk (407) are adjusted according to the measurement results of the acceleration sensor (104), thereby changing the electromagnetic force generated by it, and achieving active suppression of vibration; Step 5: When the main coil disk (407) fails, the electromagnetic actuator (406) is lowered, causing the main coil disk (407) to lower, thereby causing the replacement plate (906) to lower, thereby causing the replacement head (905) to engage with the lock head (904), thereby causing the connection head (908) to be in close contact with the connection point of the auxiliary coil disk (408), thereby causing the auxiliary coil disk (408) to work, thereby ensuring the vibration isolation effect; Step 6: When the temperature sensor (311) detects that the temperature inside the fixed sleeve (4) is high, the controller (201) controls the air pump (301), the air inlet valve (304), and the acceleration motor (701) to cooperate to deliver the nitrogen gas cooled by the acceleration box (7) to the inside of the fixed sleeve (4), and at the same time, the nitrogen gas is returned to the nitrogen tank (3) through the air outlet valve (306), thereby cooling the internal structure of the fixed sleeve (4) and ensuring the safety of the entire device.

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