Multi-point array intelligent rigidity self-adaptive vibration isolator

Abstract

The embodiment of the application discloses a multi-point array intelligent rigidity self-adaptive vibration isolator, which is characterized by comprising an upper plate, a bottom plate, a bottom supporting plate, a plurality of spring vibration isolators, a plurality of electromagnetic vibration isolators and a guide piece; the upper plate is used for contacting a load and transmitting a vibration signal generated by the load to the spring vibration isolators; one side of the bottom plate is fixed with the bottom supporting plate, and the other side is arranged opposite to the upper plate; the spring vibration isolators are arranged opposite between the upper plate and the bottom plate; the electromagnetic vibration isolators are arranged in a multi-point array on the bottom plate and are used for dynamically adjusting the output magnetic force to generate a thrust on the upper plate at the arrangement position to change the equivalent rigidity of the vibration isolation system when the trigger condition is met, so that the overall height of the upper plate is stabilized at a set value; and the guide piece is arranged opposite between the upper plate and the bottom plate. The application not only has the characteristics of quick response and accurate control, but also can realize automatic adjustment according to actual needs, and provides a more intelligent vibration control method for precision equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vibration isolators, in particular to a multi-point array intelligent stiffness adaptive vibration isolator. BACKGROUND

[0002] With the development of engineering, vibration is the main cause of instability of the device, improving the vibration condition during the operation of the device is an important measure to improve the reliability of the device operation, which is widely used in ship vibration isolation, equipment processing and manufacturing, automobile and other related fields.

[0003] The harm of vibration mainly includes: first, the vibration of mechanical equipment will reduce the service life of the equipment, second, vibration will also produce noise. Therefore, in actual work, it is necessary to effectively suppress and prevent the influence of vibration, and the common prevention measure is to install a vibration isolator on the mechanical equipment.

[0004] However, the traditional passive vibration isolator can provide certain vibration isolation effect, but its stiffness is fixed and difficult to adapt to complex and changeable working environment. Especially when the shock absorber is used for vibration reduction support of a device, if the direction of the excitation load changes greatly, it may cause the device to tilt, thereby causing the local load of the shock absorber and generating a relatively large stress concentration, and even damaging the shock absorber in severe cases. SUMMARY

[0005] Therefore, in order to solve the problems existing in the prior art, an intelligent automatic vibration isolation device based on electromagnetic force adjustment for industrial vibration isolation is provided.

[0006] A multi-point array intelligent stiffness adaptive vibration isolator, characterized in that it comprises an upper plate, a bottom plate, a bottom support plate, a plurality of spring vibration isolators, a plurality of electromagnetic vibration isolators and a guide piece.

[0007] The upper plate is used to contact the load and transmit the vibration signal generated by the load to the spring vibration isolator.

[0008] The bottom plate is fixed with the bottom support plate on one side and is arranged opposite to the upper plate on the other side.

[0009] The spring vibration isolator is arranged opposite between the upper plate and the bottom plate, and is used to reduce the vibration amplitude of the vibration signal transmitted to the bottom plate through its expansion and deformation.

[0010] The electromagnetic vibration isolator is arranged in a multi-point array on the bottom plate, and is used to dynamically adjust the output magnetic force to generate a thrust on the upper plate at the arrangement position when the trigger condition is met, so as to stabilize the overall height of the upper plate at a set value.

[0011] The guide piece is arranged opposite between the upper plate and the bottom plate.

[0012] Optionally, in one embodiment, the electromagnetic vibration isolator comprises an electromagnetic actuator, a trigger switch, a laser range finder and a controller.

[0013] The trigger switch is configured to send a trigger signal to the controller when a trigger condition is reached.

[0014] The controller is configured to output a corresponding coil adjustment current signal based on the obtained action distance after receiving the trigger signal, so as to control the electromagnetic actuator to be energized and output a corresponding thrust force to the upper plate at the layout position.

[0015] The laser range finder is configured to measure the action distance between the electromagnetic actuator and the upper plate in real time.

[0016] Optionally, in one embodiment, the electromagnetic actuator comprises an outer fixed structure, an inner driving structure, upper and lower end covers, and an electromagnetic coil. The outer fixed structure adopts a sleeve structure, one end of which is detachably mounted on the bottom plate. The upper and lower end covers are respectively mounted at both ends of the sleeve structure to ensure the sealing and integrity of the outer shell, and the upper end cover is a variable-diameter sleeve structure. The inner driving structure comprises a straight-through sleeve structure and a moving arm, and the straight-through sleeve structure and the variable-diameter sleeve structure are in a non-contact mounting form. The outer wall diameter of the straight-through sleeve structure is the same as that of one end of the variable-diameter sleeve structure, and a cylindrical connecting piece is used to form a fixed mounting of a coil skeleton of the electromagnetic coil, so that the electromagnetic coil can be sleeved thereon. The moving arm comprises a moving end capable of reciprocating along the axial direction under the action of the magnetic field generated by the electromagnetic coil, and a thrust end extending from the outer fixed structure and generating thrust force to the upper plate.

[0017] Optionally, in one embodiment, the thrust end adopts a cylindrical structure, and the moving end adopts a variable-diameter rod structure. The small-diameter end of the variable-diameter rod structure reciprocates in the longitudinal hole slot of the variable-diameter sleeve structure, and the large-diameter end reciprocates in the longitudinal hole slot of the straight-through sleeve structure and is limited in the movable distance by the variable-diameter sleeve structure.

[0018] Optionally, in one embodiment, the outer wall diameter of one end of the lower end cover is the same as that of the straight-through sleeve structure, so as to be fixed to the lower end of the straight-through sleeve structure through a cylindrical connecting piece. The lower end cover comprises a plug structure and a lower cover structure. The lower cover structure is mounted at the lower end of the sleeve structure, and the plug structure extends into the through hole of the lower cover structure on one side.

[0019] Optionally, in one embodiment, the guide comprises a fixed plate, a limiting nut, and a fixed seat; the fixed plate comprises a fixed part and a bent part, the fixed part is T-shaped structure fixed to the edge of the upper plate, the bent part has a limiting hole for the fixed seat to insert; one end of the fixed seat is fixed to the edge of the bottom plate, the other end passes through the limiting hole and is limited by the limiting nut as an upper limiter to limit the maximum stroke of the upper plate.

[0020] Optionally, in one embodiment, the bottom plate is provided with electromagnetic vibration isolators mounting holes distributed in a multi-point array at equal distances, the number of which is configured according to the number of required electromagnetic actuators.

[0021] The embodiment of the present application has the following beneficial effects:

[0022] The present application provides a multi-point array stiffness self-adaptive adjustment vibration isolator, which is designed by combining passive vibration isolation (such as spring vibration isolator) and active self-adaptive vibration isolation (such as multi-point array electromagnetic vibration isolator) to achieve the best vibration control effect; specifically, it first reduces the transmitted vibration energy and performs basic vibration isolation through the spring vibration isolator; secondly, based on the stiffness control technology of current regulation, the active self-adaptive vibration isolation design enables it to adjust the local stiffness within the entire support platform, thereby making the stiffness of the vibration isolation system change flexibly under the influence of external vibration, achieving a better vibration isolation effect. In summary, the present application not only has the characteristics of rapid response and accurate control, but also can realize automatic adjustment according to actual needs, providing a more intelligent vibration control method for precision equipment. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0024] Among them:

[0025] Figure 1 is the overall structure diagram of the vibration isolator described in the present application;

[0026] Figure 2 is the bottom view of the vibration isolator described in the present application;

[0027] Figure 3 is the schematic diagram of the electromagnetic actuator in the present application;

[0028] Figure 4 is the sectional view of the electromagnetic actuator in the present application;

[0029] Figure 4-a is a sectional view of the internal driving structure of the electromagnetic actuator unit in the present application;

[0030] Figure 5 is a structural schematic diagram of the guide in the present application;

[0031] In the figure: 1-upper plate, 2-bottom plate, 3-bottom support plate, 4-electromagnetic vibration isolator, 4-0-electromagnetic actuator unit, 4-1-trigger switch, 4-2-laser range finder, 4-3-outer shell, 4-4-terminal post, 4-5-plug structure, 4-6-lower cover structure, 4-7-coil, 4-8-moving arm, 4-9-straight-through sleeve structure, 4-10-upper end cover, 4-11-lower cover lower groove, 4-12-plug groove, 4-13-lower cover upper groove, 4-14-base groove, 4-15-straight-through sleeve structure, 4-16-reducing rod structure, 4-17-thrust end, 4-18-longitudinal hole groove, 5-guide, 5-1-fixing plate, 5-2-limiting nut, 5-3-fixing seat, 6-spring vibration isolator, 7-embedded disc, 8-embedded ring. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and are not intended to limit the present application.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. It is to be understood that the use of "first", "second", etc. herein does not denote any order, quantity, combination with, or priority of the objects, but such terms are used only for the purpose of distinguishing one element from another. By way of example, a first element can be termed a second element, and, similarly, a second element can be termed a first element, without departing from the scope of the application. The first element and the second element are both elements, but they are not the same element.

[0034] To solve the problems existing in the prior art, in the embodiment, as shown in Figures 1-5 the present application proposes a multi-point array intelligent stiffness self-adaptive vibration isolator, characterized in that it comprises an upper plate 1, a bottom plate 2, a bottom support plate 3, a plurality of spring vibration isolators 6, a plurality of electromagnetic vibration isolators 4 and a guide 5.

[0035] The upper plate 1 is used to contact the load and transmit the vibration signal generated by the load to the spring vibration isolator 6.

[0036] The bottom plate 2 is fixed with a bottom support plate 3 on one side and is arranged opposite to the upper plate 1 on the other side.

[0037] The spring vibration isolator 6 is arranged opposite between the upper plate 1 and the bottom plate 2, and is used for reducing the vibration amplitude of the vibration signal transmitted to the bottom plate 2 through the elastic deformation of itself.

[0038] The electromagnetic vibration isolator 4 is arranged in a multi-point array on the bottom plate 2, and is used for dynamically adjusting the magnetic force output to generate a thrust on the upper plate 1 at the arrangement position to change the equivalent stiffness of the vibration isolation system, so as to stabilize the overall height of the upper plate 1 at a set value when the trigger condition is met.

[0039] The guide 5 is arranged opposite between the upper plate 1 and the bottom plate 2.

[0040] Based on the above design scheme, the multi-point array intelligent stiffness self-adaptive vibration isolator provided by the application has reliable structure and convenient operation, can automatically adjust the stiffness of the equipment in real time, and can adjust the stiffness of each electromagnetic actuator in the vibration isolator by adjusting the current of the energized coil of each electromagnetic actuator at the installation position, so as to adjust the local stiffness of each position, so that the stiffness of the system can change flexibly under the influence of external vibration, and can maintain stability under uneven load. And the guide prevents the left and right displacement of the upper support table, improves the overall structural performance of the vibration isolator, prolongs the service life of the vibration isolator, and improves the use performance of the vibration isolator. The corresponding design principle is:

[0041] In the electromagnetic vibration isolation system, when the upper plate is pressed to the trigger switch under load but fails to trigger completely, the vibration isolation system continues to be isolated by the spring vibration isolator-steel spring; once the trigger switch is activated, the electromagnetic actuator is energized, at which time the laser range finder starts to measure the height change of the upper plate in real time, and feeds back the monitoring data to the controller; the controller adjusts the size of the coil current according to the monitoring data to dynamically adjust the stiffness of the electromagnetic actuator, so as to optimize the vibration isolation effect.

[0042] In some specific embodiments, the upper plate 1 is used to contact the load and transmit the vibration signal generated by the load to the spring vibration isolator 6; preferably, the upper plate 1 is a flat plate structure, and the upper plate surface is in contact with the load to transmit the vibration signal generated when the load is applied to the spring vibration isolator 6.

[0043] In some specific embodiments, the bottom plate 2 is provided with electromagnetic vibration isolators mounting holes arranged in a multi-point array with M rows and N columns, and the number of the mounting holes is determined by the number of electromagnetic vibration isolators, so that the electromagnetic vibration isolators are installed on the bottom plate in a multi-point array.

[0044] In some specific embodiments, the spring vibration isolator is a steel spring, which can be deformed when the load signal changes, so as to convert kinetic energy into potential energy and store it, thereby reducing the vibration energy transmitted. In order to improve the installation reliability of the steel spring, the steel spring is installed between the upper plate 1 and the bottom plate 2 through an embedded structure. The embedded structure includes an embedded disc 7 embedded on the lower surface of the upper plate 1 and an embedded ring 8 embedded on the upper surface of the bottom plate 2. Preferably, there are four sets of embedded structures on the lower surface of the upper plate 1 and the upper surface of the bottom plate 2, respectively, which provide basic vibration isolation when the electromagnetic vibration isolator is not triggered.

[0045] In some specific embodiments, the electromagnetic vibration isolator 4 includes an electromagnetic actuator unit 4-0, a trigger switch 4-1, a laser range finder 4-2, and a controller.

[0046] The trigger switch 4-1 is used to send a trigger signal to the controller when the trigger condition is reached. The trigger switch detects whether the upper plate has reached the critical position that needs to notify the controller to start the electromagnetic actuator unit, so as to identify the two working states of “simple fluctuation” and “complete triggering” through the trigger condition. The trigger condition mentioned above is to reach a preset force threshold, which is set according to the maximum expected load that the spring vibration isolator can withstand and the force range that will not be exceeded in the case of simple fluctuation. Preferably, the trigger switch 4-1 is fixed outside the housing of the electromagnetic actuator unit 4-0, and is located above the terminal post 4-4 (for example, the terminal post is located at the center of the housing outside, and the electromagnetic coil inside the housing extends to the terminal post) of the electromagnetic coil 4-7 of the electromagnetic actuator unit. When the upper plate 1 is lowered to successfully trigger the switch, the electromagnetic actuator unit 4-0 starts to work through the controller.

[0047] The electromagnetic actuation unit includes an outer fixed structure, an inner drive structure, upper / lower end caps, and an electromagnetic coil 4-7. The outer fixed structure (also known as the outer shell 4-3) adopts a sleeve structure. One end of the sleeve structure is detachably installed on the base plate 2. The upper / lower end caps are respectively installed at both ends of the sleeve structure to ensure the sealing and integrity of the outer shell. The upper end cap 4-10 is a variable diameter sleeve structure. The inner drive structure includes a straight sleeve structure 4-15 and a moving arm 4-8. The straight sleeve structure and the variable diameter sleeve structure are installed in a non-contact manner. The outer wall diameter of the straight sleeve structure is the same as the outer wall diameter of one end of the variable diameter sleeve structure. A coil frame for fixing the electromagnetic coil is formed by a cylindrical connector 4-9 so that the electromagnetic coil can be sleeved on it. The moving arm includes a moving end that can reciprocate along the axial direction under the action of the magnetic field generated by the electromagnetic coil and a thrust end that extends from the outer fixed structure and generates a thrust on the upper plate.

[0048] Preferably, the thrust end 4-17 adopts a cylindrical structure, and the moving end adopts a variable diameter rod structure 4-16. The smaller diameter end of the variable diameter rod structure reciprocates within the longitudinal slot of the variable diameter sleeve structure, while the larger diameter end reciprocates within the longitudinal slot 4-18 of the straight sleeve structure. The variable diameter sleeve structure limits the movable distance of the larger diameter end. That is, since the diameter of the larger diameter end is the same as the diameter of the longitudinal slot of the variable diameter sleeve structure, its upward movement position can be limited.

[0049] Preferably, the movable arm is made of stainless steel so that it can be attracted by magnetic force to perform corresponding actions.

[0050] Preferably, the outer wall diameter of one end of the lower end cap is the same as the outer wall diameter of the straight sleeve structure, so as to be fixed to the lower end of the straight sleeve structure by a cylindrical connector; the lower end cap includes a plug structure 4-5 and a lower cover structure 4-6, the lower cover structure 4-6 is installed at the lower end of the sleeve structure, one side of the plug structure 4-5 extends into the through hole of the lower cover structure and cooperates with the lower cover structure to form a sealing end cap structure, and at the same time, the lower cover structure has a through hole in the center, through which lubricating oil can be added to ensure the normal operation of the moving arm.

[0051] Preferably, in order to ensure the integrity and sealing of the corresponding structure, multiple groove structures for placing rubber sealing rings are provided, such as the base groove 4-14 on the variable diameter sleeve structure, the lower cover upper groove 4-13 and lower cover lower groove 4-11 on the lower end cover, and the plug groove 4-12 on the plug structure, so as to achieve the sealing and clamping effect of each part through the rubber sealing rings.

[0052] In addition to the aforementioned mechanical components, the electromagnetic vibration isolator of this invention is connected to a controller for real-time adjustment of the overall and local stiffness of the isolator according to different loads. Upon receiving the trigger signal, the controller outputs a corresponding coil adjustment current signal based on the acquired action distance to control the electromagnetic actuation unit to energize and output a corresponding thrust to the upper plate at its deployment location, thereby changing the equivalent stiffness of the vibration isolation system. The controller outputs the corresponding coil adjustment current signal based on the acquired action distance (laser rangefinder: real-time measurement of the distance between the upper plate and a reference point) using a preset controller algorithm, such as automatically adjusting P, I, and ... using an adaptive PID algorithm. The D parameter uses the MPC algorithm to find the optimal control strategy by solving an optimization problem, ensuring optimal vibration isolation under different load conditions. A fuzzy logic control algorithm is used to define the relationship between the input variable (action distance) and the output variable (current) through fuzzy rule sets and membership functions. Alternatively, a neural network control algorithm can be used to continuously optimize the control strategy by training the neural network, enabling it to continuously learn and adjust during operation, thereby improving the system's adaptability. Specific settings and adjustments can be made according to actual conditions. Simultaneously, the controller also uses an electromagnetic coil drive circuit to receive commands from the controller and convert them into appropriate electrical signals to drive the electromagnetic coil.

[0053] The laser rangefinder 4-2 is used to measure the distance between itself and the upper plate in real time, i.e., the height change of the upper plate relative to its installation position (which can be used as a fixed reference point). The reason for using a laser rangefinder is that it can measure the distance between itself and the upper plate with extremely high accuracy (usually at the millimeter or even micrometer level); and its fast response speed ensures that the controller can react in the shortest possible time and adjust the working state of the electromagnetic actuation unit, so that it can dynamically adjust the coil current according to the actual load, thereby changing the stiffness or damping characteristics of the electromagnetic actuation unit; at the same time, this non-contact measurement method can achieve the goal of not applying additional force to the measured object or causing mechanical wear, extending the service life of the system, while providing more accurate optimization of vibration isolation effect, reducing unnecessary vibration transmission, and improving the overall performance of the system.

[0054] Preferably, the laser rangefinder is fixedly attached to the outer casing below the terminal block, and is vertically offset from the trigger switch to ensure that the laser from the laser rangefinder can be projected onto the upper plate 1.

[0055] In some specific embodiments, the guide member 5 is disposed opposite to the upper plate 1 and the bottom plate 2 on both sides, and plays a guiding role to ensure that the movement between the upper plate and the bottom plate is kept on a predetermined axis, preventing lateral displacement (preventing unnecessary lateral (i.e., non-perpendicular) movement of the upper plate relative to the bottom plate) or rotation (maintaining the parallelism between the upper plate and the bottom plate, avoiding tilting or rotation caused by vibration), thereby ensuring that the spring vibration isolator can work correctly.

[0056] In some more specific embodiments, the guide member 5 includes a fixing plate 5-1, a limiting nut 5-2, and a fixing seat 5-3. The fixing plate 5-1 includes a fixing part and a bending part. The fixing part is a T-shaped structure and is fixed to the edge of the upper plate 1 along the width direction by bolts. The bending part has a limiting hole (the hole diameter is slightly larger than the diameter of the screw) for the fixing seat 5-3 to be inserted. The fixing seat 5-3 (which is a screw) is fixed to the edge of the bottom plate by bolts at one end, and the other end passes through the limiting hole and is limited by the limiting nut 5-2 as an upper limiter to limit the maximum stroke of the upper plate. The fixed plate 5-1 includes a fixing part fixed to the edge of the upper plate 1. As a vertical movement guide, it ensures that the upper plate can only move up and down in the vertical direction without lateral displacement. At the same time, the limiting nut 5-2 cooperates with the fixing seat 5-3 that passes through the limiting hole of the bending part to achieve pre-screwing into the appropriate position under no-load conditions. It also acts as an upper limit device to limit the maximum stroke of the upper plate to prevent the upper plate from rising excessively, protect the system from overload damage, and allow the spring vibration isolator to work within its optimal performance range, achieving effective vibration isolation.

[0057] The working process of the multi-point array intelligent stiffness adaptive vibration isolator is as follows:

[0058] Vibration isolator initialization phase:

[0059] Upon startup, the controller reads the initial state of the rangefinder sensor and sets the default parameters, i.e., the target distance: an ideal action distance is set according to application requirements; at the same time, the electromagnetic actuation unit is in standby mode, waiting for the trigger condition.

[0060] Vibration isolator under load:

[0061] If the upper plate is subjected to a load but the trigger switch is not triggered, the main structure of the vibration isolator (upper plate and bottom plate) and the steel spring will provide basic vibration isolation; if the load is only a simple fluctuation, the upper plate is pressed to the switch but fails to be fully triggered, then the trigger signal is not triggered, that is, the electromagnetic coil is not energized.

[0062] When the trigger condition is met, the trigger switch sends a trigger signal, and the controller energizes the electromagnetic actuator unit. The laser rangefinder measures the height of the upper plate in real time. Based on the action distance provided by the laser rangefinder, the controller uses a selected control algorithm (such as PID, MPC, etc.) to calculate the required coil adjustment current in real time. The drive circuit receives the controller command and supplies power to the coil of the electromagnetic actuator unit, causing it to start working. After the electromagnetic coil is energized, the moving arm experiences an upward electromagnetic force.

[0063] The thrust end contacts the upper plate, and the current is automatically adjusted in real time based on data measured by the laser rangefinder, thus outputting a corresponding thrust to adjust the local stiffness of the current electromagnetic actuator position. By adjusting the local stiffness of each installation position, the overall stiffness of the vibration isolator is dynamically adjusted until the height of the upper plate stabilizes at the set value. At this point, the local stiffness of each position remains unchanged. When the height exceeds the set value, the electromagnetic coil stops energizing, and the foundation vibration isolation stage is entered again. The electromagnetic actuator returns to the initial standby state, ready for the next start. It should be noted that each electromagnetic actuator in the array placement described in this invention works independently. When the upper plate 1 receives an uneven load, different positions experience different loads. The upper plate may tilt, and each electromagnetic actuator adjusts its local stiffness in real time according to its measured height, independently completing the work cycle, ultimately maintaining the upper plate at the set value height (or above). Through the above steps, it can be seen that the controller can output a corresponding coil adjustment current signal according to the action distance, thereby achieving precise control of the electromagnetic actuator. This adaptive control mechanism not only improves the vibration isolation effect but also enhances the stability and reliability of the system.

[0064] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A multi-point array type intelligent stiffness adaptive vibration isolator, characterized in that, include: The components include an upper plate, a bottom plate, a bottom support plate, several spring vibration isolators, several electromagnetic vibration isolators, and guide components. The upper plate is used to contact the load and transmit the vibration signal generated by the load to the spring isolator; The bottom plate is fixed to a bottom support plate on one side, and the other side is arranged opposite to the top plate. The spring isolator is disposed between the upper plate and the bottom plate to reduce the vibration amplitude of the vibration signal transmitted to the bottom plate through its own expansion and contraction deformation. The electromagnetic vibration isolators are arranged in a multi-point array on the base plate. When the triggering conditions are met, the output magnetic force is dynamically adjusted to generate a thrust on the upper plate at the arrangement position, thereby stabilizing the overall height of the upper plate at the set value. The guide member is disposed opposite to the upper plate and the bottom plate; the electromagnetic vibration isolator includes an electromagnetic actuation unit, a trigger switch, a laser rangefinder and a controller. The electromagnetic actuation unit includes an electromagnetic coil; The trigger switch is used to send a trigger signal to the controller when the trigger condition is met; the trigger switch is fixed on the outside of the housing of the electromagnetic actuation unit, and it is located above the terminal of the electromagnetic coil of the electromagnetic actuation unit. When the upper plate descends to the successful trigger switch, the controller controls the electromagnetic actuation unit to start working. The controller is used to output a corresponding coil adjustment current signal based on the acquired action distance after receiving the trigger signal, so as to control the electromagnetic actuation unit to be energized and to output a corresponding thrust to the upper plate at its deployment position. The laser rangefinder is used to measure the moving distance between itself and the upper plate in real time; the laser rangefinder is fixedly attached to the outer casing below the terminal block.

2. The multi-point array intelligent stiffness adaptive vibration isolator according to claim 1, characterized in that, The electromagnetic actuation unit further includes an external fixing structure, an internal driving structure, and upper / lower end caps. The external fixing structure is a sleeve structure, with one end of the sleeve structure detachably mounted on the base plate. The upper / lower end caps are respectively mounted on both ends of the sleeve structure, and the upper end cap is a variable-diameter sleeve structure. The internal driving structure includes a straight-through sleeve structure and a moving arm. The straight-through sleeve structure and the variable-diameter sleeve structure are installed in a non-contact manner. The outer diameter of the straight-through sleeve structure is the same as the outer diameter of one end of the variable-diameter sleeve structure, and a coil frame for fixing the electromagnetic coil is formed by a cylindrical connector, so that the electromagnetic coil can be sleeved on it. The moving arm includes a moving end that can reciprocate axially under the action of the magnetic field generated by the electromagnetic coil and a thrust end that extends from the external fixing structure and generates a thrust on the upper plate.

3. The multi-point array intelligent stiffness adaptive vibration isolator according to claim 2, characterized in that, The thrust end adopts a cylindrical structure, and the moving end adopts a variable diameter rod structure. The smaller diameter end of the variable diameter rod structure reciprocates within the longitudinal slot of the variable diameter sleeve structure, while the larger diameter end reciprocates within the longitudinal slot of the straight sleeve structure, and its movable distance is limited by the variable diameter sleeve structure.

4. The multi-point array intelligent stiffness adaptive vibration isolator according to claim 2, characterized in that, The outer wall diameter of one end of the lower end cap is the same as the outer wall diameter of the straight sleeve structure, so as to be fixed to the lower end of the straight sleeve structure by a cylindrical connector; the lower end cap includes a plug structure and a lower cover structure, the lower cover structure is installed at the lower end of the sleeve structure, and one side of the plug structure extends into the through hole of the lower cover structure.

5. The multi-point array intelligent stiffness adaptive vibration isolator according to claim 1, characterized in that, The guide component includes a fixed plate, a limiting nut, and a fixed seat; the fixed plate includes a fixed part and a bent part, the fixed part is a T-shaped structure and is fixed to the edge of the upper plate, the bent part has a limiting hole for the fixed seat to be inserted; one end of the fixed seat is fixed to the edge of the bottom plate, and the other end passes through the limiting hole and is limited by the limiting nut as an upper limit device to limit the maximum stroke of the upper plate.

6. The multi-point array intelligent stiffness adaptive vibration isolator according to claim 1, characterized in that, The base plate is provided with electromagnetic vibration isolator mounting holes arranged in a multi-point array at equal intervals, and the number of holes is configured according to the number of electromagnetic actuation units required.

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