Active anti-vibration mount and method of mounting

Abstract

The application relates to the field of vibration reduction technology and discloses an active anti-vibration base and a mounting method thereof. Through cooperation of an electromagnetic coil and a magnet rod, the epoxy cover plate is pushed upward by the pushing force of the electromagnetic coil, so that a magnetic suspension support is formed to reduce vibration, the influence of external vibration on equipment can be reduced, and meanwhile, through cooperation of a piston pipe and a lifting piston, when the base vibrates, the external air is pumped into the air spring through the up-and-down vibration of the lifting piston, so that the pressure of the air spring is increased, the natural frequency of the system can be changed, the resonance frequency is avoided, and the influence of resonance is reduced.

Description

Technical Field

[0001] This invention relates to the field of vibration reduction technology, specifically to an active vibration damping base and its installation method. Background Technology

[0002] Vibration damping bases are devices used to reduce equipment vibration. Their core function is to absorb and disperse vibration energy. Ground vibration and shocks can negatively impact equipment efficiency. Using vibration damping bases can reduce this impact, ensuring equipment operates in a stable environment and improving work efficiency and production quality.

[0003] Traditional vibration damping bases, such as the low-frequency anti-micro-vibration base for precision instruments with publication number CN217207502U, use metal springs and air springs to reduce vibration, which can effectively reduce the impact of vibration on the equipment. However, when encountering low-frequency vibrations outside the effective range, the vibration damping base may still resonate, affecting the normal operation of the equipment. Summary of the Invention

[0004] The purpose of this invention is to provide an active anti-vibration base and its installation method to solve the problem that traditional anti-vibration bases may resonate during operation, as mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an active shock-absorbing base, comprising a pressure-distributing steel plate base, an automatic frequency-modulated vibration damper disposed on the pressure-distributing steel plate base, and an epoxy cover plate laid above the automatic frequency-modulated vibration damper;

[0006] The automatic frequency damper includes a first damping plate, which is fixedly connected to an epoxy cover plate by bolts. A second damping plate is provided below the first damping plate, and a third damping plate is provided below the second damping plate. The third damping plate is fixedly connected to a pressure-dividing steel plate base by bolts. An air spring is provided between the first damping plate and the second damping plate.

[0007] A piston tube is provided between the second and third damping plates. A lifting limit rod is fixedly connected to the bottom of the first damping plate. The lifting limit rod passes through the piston tube. A piston connecting column is movably connected to the lower end of the lifting limit rod. A lifting piston is fixedly connected to the piston connecting column. A rubber sealing ring is provided between the lifting piston and the inner wall of the piston tube. An air inlet one-way valve is provided at the upper end of the piston tube. A one-way pump valve is provided inside the lifting piston. The one-way pump valve (13) restricts air from flowing downwards from the lifting piston (12) in one direction. An exhaust port is provided at the bottom of the piston tube. A compressed air pipe is connected to the exhaust port. The other end of the compressed air pipe is connected to an air spring.

[0008] Furthermore, there are four sets of piston tubes, which are located at the four corners of the second and third damping plates, respectively. The upper end of the piston tube is fixedly connected to the second damping plate, and the lower end of the piston tube is fixedly connected to the third damping plate.

[0009] Furthermore, four sets of lifting limit rods are provided, with the four sets of lifting limit rods located at the four corners of the first damping plate, and the positions of the lifting limit rods corresponding to the positions of the piston tubes.

[0010] Furthermore, the air spring includes an upper pressure plate and a lower pressure plate. The upper pressure plate is fixedly connected to the first damping plate, and the lower pressure plate is fixedly connected to the second damping plate. A folded compression rubber airbag is provided between the upper pressure plate and the lower pressure plate, and the folded compression rubber airbag is sealed to the upper pressure plate and the lower pressure plate respectively.

[0011] Furthermore, a magnetic rod is fixedly connected to the lower part of the upper pressure plate, and a telescopic cylinder is fixedly connected to the bottom of the lower pressure plate. The lower end of the magnetic rod is inserted into the telescopic cylinder, and an electromagnetic coil is installed on the outside of the telescopic cylinder. The compressed air pipe is connected to the bottom of the telescopic cylinder, and a leak-proof one-way valve is installed at the connection between the compressed air pipe and the telescopic cylinder.

[0012] Furthermore, a first magnet groove is provided on the inner wall of the upper end of the piston tube, and a first limiting magnet is embedded in the first magnet groove. A second magnet groove is provided on the outer wall of the lifting limiting rod, and a second limiting magnet is embedded in the second magnet groove. The lifting limiting rod is a hexagonal prism. There are six sets of both the first and second limiting magnets, and the six sets of second limiting magnets are strictly distributed on the six sides of the hexagonal prism. The ends of the first and second limiting magnets with the same magnetic poles are arranged opposite each other.

[0013] Furthermore, a first circular limiting groove is provided at the lower end of the lifting limit rod, and a second circular limiting groove is provided on the outside of the first circular limiting groove. The diameter of the second circular limiting groove is smaller than that of the first circular limiting groove. A limiting block is fixedly connected to the upper end of the piston connecting column, and the limiting block and the piston connecting column are fixedly connected by a connecting rod.

[0014] Furthermore, the diameter of the limiting block is larger than the diameter of the connecting rod. The limiting block is inserted into the first circular limiting groove, and the connecting rod passes through the second circular limiting groove. The diameter of the first circular limiting groove is larger than the diameter of the limiting block, the height of the first circular limiting groove is equal to the height of the limiting block, and the diameter of the second circular limiting groove is larger than the diameter of the connecting rod.

[0015] Furthermore, the one-way air pump valve includes a vent hole that passes through both ends of the lifting piston. A cross retainer is fixedly connected inside the vent hole. The piston connecting column passes through the cross retainer and is fixedly connected to the cross retainer. A gasket bolt is fixedly connected to the lower end of the piston connecting column by a thread. A pressure spring is fitted over the piston connecting column. A rubber valve plate is installed at the lower opening of the vent hole. The piston connecting column passes through the rubber valve plate. The pressure spring is located between the gasket bolt and the rubber valve plate. The diameter of the rubber valve plate is larger than that of the vent hole.

[0016] This invention provides another technical solution: an installation method for an active shock-absorbing base, comprising the following steps:

[0017] S1. Installation of the pressure-distributing steel plate base: First, inspect the pressure-distributing steel plate base to ensure it is intact, free from rust and deformation. Also, ensure the mounting surface is flat, dry, and free of oil. Clean and pre-treat if necessary. Using a crane or forklift, carefully move the pressure-distributing steel plate base to the designated installation position. During movement, avoid collisions and scratches on the base surface. Then, use a level to precisely level the pressure-distributing steel plate base. It may be necessary to insert shims of appropriate thickness or adjusting bolts under the base until the specified levelness is achieved. After confirming the base is completely level, use high-strength bolts to firmly fix it to the mounting surface. During bolt tightening, follow the principle of cross-symmetry, gradually and evenly applying force to prevent base deformation.

[0018] S2. Installation of Automatic Frequency Modulation Vibration Damper: According to the design layout, fix the six sets of automatic frequency modulation vibration dampers at the four corners and the two sides of the middle of the pressure-distributing steel plate base to ensure even distribution and maximize the vibration damping effect. Use special installation tools and bolts to fix them. Note that the pre-tightening torque of the bolts must meet the requirements of the product manual.

[0019] S3. Epoxy Cover Plate Installation: Confirm that the size and thickness of the epoxy cover plate match the design drawings, and that the surface is flat and smooth, without cracks, bubbles or other defects. Gently place the epoxy cover plate on the installed automatic frequency modulation vibration damper, taking care to maintain the alignment between the cover plate and the vibration damper to avoid misalignment. According to the design requirements, fix the epoxy cover plate with bolts at the edge to enhance the overall stability. When fixing, avoid putting additional pressure on the vibration damper.

[0020] S4. Leveling: The internal air spring is gradually pressurized through the control system of the automatic frequency-modulated vibration damper until the predetermined pressure value is reached. During pressurization, the pressure gauge reading should be carefully observed to ensure that the pressure is uniform and stable. While pressurizing, the levelness of the epoxy cover plate is checked again using a level. If necessary, further adjustments can be made by fine-tuning the pressure of the air spring or adjusting the shims of the pressure-distributing steel plate base until the levelness standard is met.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. This invention discloses an active vibration damping base and its installation method. By cooperating with an electromagnetic coil and a magnetic rod, the electromagnetic coil pushes the magnetic rod upward to form a magnetic levitation support for vibration damping. This reduces the impact of external vibrations on the equipment. Simultaneously, by cooperating with a piston tube and a lifting piston, when the base vibrates, the lifting piston vibrates up and down to pressurize the outside air and pump it into the air spring. This increases the pressure of the air spring, thereby changing the natural frequency of the system and avoiding the resonant frequency to reduce the impact of resonance.

[0023] 2. The present invention provides an active anti-vibration base and its installation method. By using the repulsion between the like poles of the first limiting magnet and the second magnet groove, the horizontal displacement of the lifting limit rod can be limited. No fixed positioning is required. Through magnetic positioning, the impact of transverse wave vibration on the equipment can be avoided, resulting in better vibration damping effect. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the layout structure of the automatic frequency modulation vibration damper of the present invention;

[0026] Figure 3 This is a schematic diagram of the automatic frequency modulation vibration damper structure of the present invention;

[0027] Figure 4 This is a schematic cross-sectional view of the air spring structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the piston tube and lifting limit rod structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the lifting piston structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the first limiting magnet and the second magnet slot structure of the present invention.

[0031] Labels in the diagram: 1. Pressure-distributing steel plate base; 2. Automatic frequency-adjustable vibration damper; 3. Epoxy cover plate; 4. First vibration damping plate; 5. Second vibration damping plate; 6. Third vibration damping plate; 7. Air spring; 701. Upper pressure plate; 702. Lower pressure plate; 703. Folding compression rubber airbag; 704. Magnetic rod; 705. Telescopic cylinder; 8. Electromagnetic coil; 9. Piston tube; 901. First magnetic groove; 902. First limit magnet; 903. Inlet one-way valve; 10. Lifting limit rod; 1001. Second 1002. Magnetic groove; 1003. Second limiting magnet; 1004. First circular limiting groove; 1005. Second circular limiting groove; 11. Piston connecting column; 1101. Limiting block; 1102. Connecting rod; 12. Lifting piston; 1201. Rubber sealing ring; 13. One-way pump valve; 1301. Vent hole; 1302. Cross retainer; 1303. Washer bolt; 1304. Pressure spring; 1305. Rubber valve plate; 14. Exhaust port; 15. Compressed air pipe; 16. Leak-proof one-way valve. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings.

[0034] Please see Figure 1 - Figure 7 An active vibration damping base and its installation method include a pressure-distributing steel plate base 1, an automatic frequency-modulated vibration damper 2 installed on the pressure-distributing steel plate base 1, and an epoxy cover plate 3 laid on top of the automatic frequency-modulated vibration damper 2.

[0035] The automatic frequency-modulated vibration damper 2 includes a first damping plate 4, which is fixedly connected to an epoxy cover plate 3 by bolts. A second damping plate 5 is provided below the first damping plate 4, and a third damping plate 6 is provided below the second damping plate 5. The third damping plate 6 is fixedly connected to a pressure-distributing steel plate base 1 by bolts. An air spring 7 is provided between the first damping plate 4 and the second damping plate 5. The air spring 7 includes an upper pressure plate 701 and a lower pressure plate 702. The upper pressure plate 701 is fixedly connected to the first damping plate 4, and the lower pressure plate 702 is fixedly connected to the second damping plate 5. A folded compression rubber airbag 703 is provided between the upper pressure plate 701 and the lower pressure plate 702. The folded compression rubber airbag 703 is sealed to the upper pressure plate 701 and the lower pressure plate 702 by adhesive bonding.

[0036] A magnetic rod 704 is fixedly connected to the lower part of the upper pressure plate 701, and a telescopic cylinder 705 is fixedly connected to the bottom of the lower pressure plate 702. The lower end of the magnetic rod 704 is inserted into the telescopic cylinder 705. An electromagnetic coil 8 is provided on the outside of the telescopic cylinder 705. When the magnetic rod 704 moves up and down inside the telescopic cylinder 705, the system can detect the induced current in the electromagnetic coil 8, thereby detecting vibration. At the same time, adjusting the current in the electromagnetic coil 8 can also change the pushing force on the magnetic rod 704, change the load-bearing capacity, and reduce vibration.

[0037] A piston tube 9 is provided between the second damping plate 5 and the third damping plate 6. There are four sets of piston tubes 9, which are located at the four corners of the second damping plate 5 and the third damping plate 6, respectively. The upper end of the piston tube 9 is fixedly connected to the second damping plate 5, and the lower end of the piston tube 9 is fixedly connected to the third damping plate 6, thus limiting the relative position of the second damping plate 5 and the third damping plate 6. A lifting limit rod 10 is fixedly connected to the bottom of the first damping plate 4. There are four sets of lifting limit rods 10, which are located at the four corners of the first damping plate 4, and the position of the lifting limit rod 10 corresponds to the position of the piston tube 9, so that the lifting limit rod 10 can pass through the piston tube 9.

[0038] A first magnet groove 901 is formed on the inner wall of the upper end of the piston tube 9, and a first limiting magnet 902 is embedded in the first magnet groove 901. A second magnet groove 1001 is formed on the outer wall of the lifting limiting rod 10, and a second limiting magnet 1002 is embedded in the second magnet groove 1001. The lifting limiting rod 10 is a hexagonal prism. There are six sets of both the first limiting magnet 902 and the second limiting magnet 1002, and the six sets of second limiting magnets 1002 are strictly distributed on the six sides of the hexagonal prism. The ends of the first limiting magnet 902 and the second limiting magnet 1002 with the same magnetic pole are arranged opposite each other. In this way, the first limiting magnet 902 can limit the six sets of second limiting magnets 1002 from six directions, thereby limiting the lifting limiting rod 10 horizontally. Using magnetic force for horizontal limiting can reduce vibration in the horizontal direction.

[0039] A piston connecting column 11 is movably connected to the lower end of the lifting limit rod 10. A first circular limiting groove 1003 is formed at the lower end of the lifting limit rod 10, and a second circular limiting groove 1004 is formed on the outer side of the first circular limiting groove 1003. The diameter of the second circular limiting groove 1004 is smaller than that of the first circular limiting groove 1003. A limiting block 1101 is fixedly connected to the upper end of the piston connecting column 11. The limiting block 1101 and the piston connecting column 11 are fixedly connected by a connecting rod 1102. The diameter of the limiting block 1101 is larger than that of the connecting rod 1102. The limiting block 1101 is engaged with the first circular limiting groove 1003. Within the limiting groove 1003, the connecting rod 1102 passes through the second circular limiting groove 1004. The diameter of the first circular limiting groove 1003 is larger than the diameter of the limiting block 1101, and the height of the first circular limiting groove 1003 is equal to the height of the limiting block 1101. The diameter of the second circular limiting groove 1004 is larger than the diameter of the connecting rod 1102. In this way, the lifting limiting rod 10 only limits the vertical degree of freedom of the piston connecting column 11, while the piston connecting column 11 can move freely in the water direction, so that the horizontal vibration of the lifting piston 12 will not affect the lifting limiting rod 10.

[0040] A lifting piston 12 is fixedly connected to a piston connecting post 11. A rubber sealing ring 1201 is provided between the lifting piston 12 and the inner wall of the piston tube 9. An air inlet one-way valve 903 is provided at the upper end of the piston tube 9. A one-way pumping valve 13 is provided inside the lifting piston 12. The one-way pumping valve 13 includes a vent hole 1301, which passes through both the upper and lower ends of the lifting piston 12. A cross retainer 1302 is fixedly connected inside the vent hole 1301. The piston connecting post 11 passes through the cross retainer 1302 and is fixedly connected to the cross retainer 1302. The lower end of the piston connecting post 11 is connected by a screw. The piston tube 9 is fixedly connected with a gasket bolt 1303. A pressure spring 1304 is sleeved on the piston connecting column 11. A rubber valve plate 1305 is installed at the opening below the vent hole 1301. The piston connecting column 11 passes through the rubber valve plate 1305. The pressure spring 1304 is located between the gasket bolt 1303 and the rubber valve plate 1305. The diameter of the rubber valve plate 1305 is larger than that of the vent hole 1301. An exhaust port 14 is provided at the bottom of the piston tube 9. The exhaust port 14 is connected to a compressed air pipe 15. The compressed air pipe 15 is connected to the bottom of the telescopic cylinder 705. A leak-proof one-way valve 16 is provided at the connection between the compressed air pipe 15 and the telescopic cylinder 705. When subjected to vibration, the vibration causes the lifting piston 12 to move up and down. When the lifting piston 12 moves upward, the air inlet check valve 903 at the upper end of the piston tube 9 closes, the pressure in the piston tube 9 increases, and the pressure below the piston tube 9 decreases, thereby pushing open the rubber valve plate 1305, allowing air above the piston tube 9 to enter below the piston tube 9. When the lifting piston 12 moves downward, the pressure spring 1304 pushes the rubber valve plate 1305 to block the vent hole 1301. As the space below the lifting piston 12 decreases, the air is compressed, often repeatedly compressing the air into the air spring 7 and thus changing its natural frequency.

[0041] An installation method for an active seismic isolation base includes the following steps:

[0042] S1. Installation of Pressure-Dividing Steel Plate Base 1: First, inspect the pressure-dividing steel plate base 1 to ensure it is intact, free from rust and deformation. Also, ensure the mounting surface is flat, dry, and free of oil. Clean and pre-treat if necessary. Using a crane or forklift, carefully move the pressure-dividing steel plate base 1 to the designated installation position. During movement, avoid collisions and scratches on the base surface. Then, use a level to precisely level the pressure-dividing steel plate base 1. It may be necessary to insert shims of appropriate thickness or adjusting bolts under the base until the specified levelness requirement is met. After confirming the base is completely level, use high-strength bolts to firmly fix it to the mounting surface. During bolt tightening, follow the principle of cross-symmetry, gradually and evenly applying force to prevent base deformation.

[0043] S2. Installation of Automatic Frequency Modulation Vibration Damper 2: According to the design layout, fix the six sets of automatic frequency modulation vibration dampers 2 at the four corners and the two sides of the middle of the pressure-distributing steel plate base 1 respectively to ensure uniform distribution and maximize the vibration damping effect. Use special installation tools and bolts to fix them. Note that the pre-tightening torque of the bolts must meet the requirements of the product manual.

[0044] S3. Epoxy Cover Plate 3 Installation: Confirm that the dimensions and thickness of the epoxy cover plate 3 match the design drawings, and that the surface is flat and smooth, without cracks, bubbles, or other defects. Gently place the epoxy cover plate 3 on the installed automatic frequency damper 2, taking care to maintain the alignment between the cover plate and the damper to avoid misalignment. According to the design requirements, fix the epoxy cover plate 3 with bolts at the edges to enhance overall stability. When fixing, avoid putting additional pressure on the damper.

[0045] S4. Leveling: The control system of the automatic frequency damper 2 gradually pressurizes the internal air spring 7 until the predetermined pressure value is reached. During the pressurization process, the pressure gauge reading should be observed to ensure that the pressure is uniform and stable. While pressurizing, the levelness of the epoxy cover plate 3 is checked again using a level. If necessary, further adjustments can be made by fine-tuning the pressure of the air spring 7 or adjusting the shims of the pressure-distributing steel plate base 1 until the levelness standard is met.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An active shock-absorbing base, comprising a pressure-distributing steel plate base (1), characterized in that: An automatic frequency damper (2) is provided on the pressure-distributing steel plate base (1), and an epoxy cover plate (3) is laid on top of the automatic frequency damper (2). The automatic frequency damper (2) includes a first damping plate (4), which is fixedly connected to the epoxy cover plate (3) by bolts. A second damping plate (5) is provided below the first damping plate (4), and a third damping plate (6) is provided below the second damping plate (5). The third damping plate (6) is fixedly connected to the pressure-dividing steel plate base (1) by bolts. An air spring (7) is provided between the first damping plate (4) and the second damping plate (5). A piston tube (9) is provided between the second damping plate (5) and the third damping plate (6). A lifting limit rod (10) is fixedly connected to the bottom of the first damping plate (4). The lifting limit rod (10) passes through the piston tube (9). A piston connecting column (11) is movably connected to the lower end of the lifting limit rod (10). A lifting piston (12) is fixedly connected to the piston connecting column (11). A rubber sealing ring (1201) is provided between the lifting piston (12) and the inner wall of the piston tube (9). An air inlet one-way valve (903) is provided at the upper end of the piston tube (9). A one-way pump valve (13) is provided inside the lifting piston (12). The one-way pump valve (13) restricts air from flowing downwards from the top of the lifting piston (12). An exhaust port (14) is provided at the bottom of the piston tube (9). A compressed air pipe (15) is connected to the exhaust port (14). The other end of the compressed air pipe (15) is connected to an air spring (7).

2. The active anti-vibration base according to claim 1, characterized in that: The piston tube (9) is provided in four sets. The four sets of piston tubes (9) are located at the four corners of the second damping plate (5) and the third damping plate (6). The upper end of the piston tube (9) is fixedly connected to the second damping plate (5), and the lower end of the piston tube (9) is fixedly connected to the third damping plate (6).

3. The active anti-vibration base according to claim 2, characterized in that: The lifting limit rod (10) is provided in four sets. The four sets of lifting limit rods (10) are located at the four corners of the first damping plate (4), and the position of the lifting limit rod (10) corresponds to the position of the piston tube (9).

4. The active anti-vibration base according to claim 1, characterized in that: The air spring (7) includes an upper pressure plate (701) and a lower pressure plate (702). The upper pressure plate (701) is fixedly connected to the first damping plate (4), and the lower pressure plate (702) is fixedly connected to the second damping plate (5). A folded compression rubber airbag (703) is provided between the upper pressure plate (701) and the lower pressure plate (702). The folded compression rubber airbag (703) is sealed to the upper pressure plate (701) and the lower pressure plate (702) respectively.

5. An active anti-vibration base according to claim 4, characterized in that: A magnet rod (704) is fixedly connected to the lower part of the upper pressure plate (701), and a telescopic cylinder (705) is fixedly connected to the bottom of the lower pressure plate (702). The lower end of the magnet rod (704) is inserted into the telescopic cylinder (705). An electromagnetic coil (8) is provided on the outside of the telescopic cylinder (705). The compressed air pipe (15) is connected to the bottom of the telescopic cylinder (705). A leak-proof one-way valve (16) is provided at the connection between the compressed air pipe (15) and the telescopic cylinder (705).

6. The active anti-vibration base according to claim 1, characterized in that: The piston tube (9) has a first magnet groove (901) on its upper inner wall, and a first limiting magnet (902) is embedded in the first magnet groove (901). The lifting limiting rod (10) has a second magnet groove (1001) on its outer wall, and a second limiting magnet (1002) is embedded in the second magnet groove (1001). The lifting limiting rod (10) is a hexagonal prism. The first limiting magnet (902) and the second limiting magnet (1002) are each provided with six sets, and the six sets of second limiting magnets (1002) are strictly distributed on the six sides of the hexagonal prism. The ends of the first limiting magnet (902) and the second limiting magnet (1002) with the same magnetic poles are arranged opposite each other.

7. The active anti-vibration base according to claim 1, characterized in that: The lower end of the lifting limit rod (10) is provided with a first circular limit groove (1003), and a second circular limit groove (1004) is provided on the outside of the first circular limit groove (1003). The diameter of the second circular limit groove (1004) is smaller than that of the first circular limit groove (1003). The upper end of the piston connecting column (11) is fixedly connected to a limit block (1101), and the limit block (1101) and the piston connecting column (11) are fixedly connected by a connecting rod (1102).

8. An active anti-vibration base according to claim 7, characterized in that: The diameter of the limiting block (1101) is greater than the diameter of the connecting rod (1102). The limiting block (1101) is inserted into the first circular limiting groove (1003). The connecting rod (1102) passes through the second circular limiting groove (1004). The diameter of the first circular limiting groove (1003) is greater than the diameter of the limiting block (1101). The height of the first circular limiting groove (1003) is equal to the height of the limiting block (1101). The diameter of the second circular limiting groove (1004) is greater than the diameter of the connecting rod (1102).

9. An active anti-vibration base according to claim 1, characterized in that: The one-way pump valve (13) includes a vent hole (1301), which passes through the upper and lower ends of the lifting piston (12). A cross retainer (1302) is fixedly connected inside the vent hole (1301). The piston connecting column (11) passes through the cross retainer (1302) and is fixedly connected to the cross retainer (1302). A gasket bolt (1303) is fixedly connected to the lower end of the piston connecting column (11) by a thread. A pressure spring (1304) is provided on the outer sleeve of the piston connecting column (11). A rubber valve plate (1305) is provided at the lower opening of the vent hole (1301). The piston connecting column (11) passes through the rubber valve plate (1305). The pressure spring (1304) is located between the gasket bolt (1303) and the rubber valve plate (1305). The diameter of the rubber valve plate (1305) is larger than that of the vent hole (1301).

10. The installation method of an active anti-vibration base according to any one of claims 1-9, characterized in that: Includes the following steps: S1. Installation of pressure-distributing steel plate base (1): First, check the pressure-distributing steel plate base (1) to ensure that it is intact and free from rust and deformation. Move the pressure-distributing steel plate base (1) to the predetermined installation position. During the movement, avoid collisions and scratches on the base surface. Then, use a level to accurately level the pressure-distributing steel plate base (1). After confirming that the base is completely level, use high-strength bolts to firmly fix it to the installation base. S2. Installation of automatic frequency damper (2): According to the design layout, the six sets of automatic frequency dampers (2) are fixedly installed at the four corners and the two sides of the middle of the pressure plate base (1), and fixed with special installation tools and bolts. S3. Epoxy cover plate (3) installation: Gently place the epoxy cover plate (3) on the installed automatic frequency damper (2), and pay attention to keeping the cover plate and the damper aligned to avoid misalignment; S4. Leveling: Through the control system of the automatic frequency damper (2), the internal air spring (7) is gradually pressurized until the predetermined pressure value is reached. While pressurizing, the level of the epoxy cover plate (3) is checked again with a level. The pressure of the air spring (7) is further adjusted by fine adjustment until the level standard is reached.

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