Electromagnetic damping vibration isolation device

Abstract

The utility model discloses an electromagnetic damping vibration isolation device belongs to vibration control technical field. The utility model solves the technical problem of the magnetic field intensity fixed of electromagnetic damping vibration isolation device and coil heating easily leads to performance attenuation. The utility model discloses an electromagnetic damping vibration isolation device, including coil subassembly and conductor block. Coil subassembly includes coil and coil clamp. Coil clamp is held in the outer periphery of coil. Coil clamp includes clamp body and water cooling pipeline. The heat dissipation block is equipped on the clamp body, and the heat dissipation block extends along the radial direction of coil, and multiple heat dissipation blocks are evenly arranged around coil. The water cooling pipeline is surrounded in the clamp body. The conductor block is located between at least two groups of coil subassembly, and the magnetic pole of every two groups of coil subassembly is opposite, thereby making the conductor block can be subjected to electromagnetic damping force when producing vibration. The utility model discloses a vibration isolation device can cover the vibration control demand of multiple frequency bands, avoids coil overheat aging, improves the life of vibration isolation device.

Description

Technical Field

[0001] This utility model belongs to the field of vibration control technology and relates to an electromagnetic damping vibration isolation device. Background Technology

[0002] In the field of active vibration isolation, electromagnetic damping technology is increasingly widely used. However, existing electromagnetic damping vibration isolation devices still face many technical bottlenecks in practical applications. Typically, electromagnetic damping vibration isolation devices rely on permanent magnets or fixed electromagnets to generate a static magnetic field in a single direction. When a conductor (such as a copper block) moves within this magnetic field, eddy currents are induced, resulting in a damping force. The magnitude of this damping force is only related to the vibration velocity and cannot be actively adjusted according to actual needs. Furthermore, because the magnetic field strength is fixed, the device struggles to adapt to complex vibration environments such as low-frequency large displacements or high-frequency small amplitudes, limiting its performance in diverse application scenarios.

[0003] More importantly, the coils in the electromagnetic damping device generate heat during operation. This heat accumulation leads to an increase in coil temperature, which in turn causes problems such as reduced damping force, impact on the structural stability and accuracy of the device, and reduced insulation performance of the coil. As a result, the performance of the electromagnetic damping device degrades, seriously affecting the stability and reliability of the active vibration isolation effect. Utility Model Content

[0004] Based on the above analysis, this utility model aims to provide a vibration isolation device based on the principle of electromagnetic damping, so as to solve the technical problems of fixed magnetic field strength and performance degradation caused by coil heating in electromagnetic damping vibration isolation devices.

[0005] The purpose of this utility model is mainly achieved through the following technical solutions.

[0006] This utility model provides an electromagnetic damping vibration isolation device, characterized in that it includes a coil assembly and a conductor block; the coil assembly includes a coil and a coil clamp; the coil clamp is held on the outer periphery of the coil; the coil clamp includes a clamp body and a water cooling pipe; a heat sink is provided on the clamp body, the heat sink extends radially along the coil, and multiple heat sinks are evenly spaced around the coil; the water cooling pipe surrounds the clamp body; the conductor block is located between at least two sets of coil assemblies, and the magnetic poles of each pair of coil assemblies are opposite to each other.

[0007] Furthermore, the two oppositely arranged coils are wound using at least the same wire.

[0008] Furthermore, the coil includes at least two wires, each with a different diameter, to allow for flexible adjustment of the generated damping force.

[0009] Furthermore, the water-cooling pipe is a spiral channel, with the inlet and outlet of the water-cooling pipe located on both sides of the fixture body.

[0010] Furthermore, it also includes magnets, which are arranged in the coil channel along the center line of the coil.

[0011] Furthermore, the coil clamp also includes coil covers, two coil covers are threaded to both ends of the clamp body, and the two ends of the magnet are respectively fixed on the two coil covers.

[0012] Furthermore, the conductor block is made of copper, aluminum, or iron.

[0013] Furthermore, it also includes a load platform, the bottom of which is fixedly connected to the top of the conductor block.

[0014] Furthermore, it also includes a locating pin, which is detachably connected to the coil clamp and the conductor block and passes through both the coil clamp and the conductor block.

[0015] Furthermore, heat-conducting oil is coated on the contact surface between the coil clamp and the coil.

[0016] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0017] 1. The electromagnetic damping vibration isolation device of this utility model, by setting up relatively arranged coil assemblies, can change the magnetic field strength and direction by adjusting the direction and magnitude of the current in the coils, thereby dynamically adjusting the magnitude of the damping force on the damping block, improving the flexibility and practicality of the device.

[0018] 2. The electromagnetic damping vibration isolation device of this utility model, by setting water-cooling pipes and a clamp body with heat dissipation blocks inside the coil clamp, can implement forced convective heat exchange for the coil. When the coil assembly is large in volume or generates a lot of heat, it can ensure continuous and effective cooling, improve heat dissipation efficiency, avoid the degradation of the overall performance of the device due to overheating and aging of the coil, and improve the life of the vibration isolation device. In addition, by setting water-cooling pipes to dissipate heat from the coil assembly, it can also physically isolate the cooling medium from the coil, avoid the interference of the cooling medium on the uniformity of the magnetic field, and ensure the stability of the magnetic field strength.

[0019] 3. The electromagnetic damping vibration isolation device of this utility model, by setting wires of different diameters in the coil, can make the adjustment range of the damping force output by the coil assembly more precise, thereby improving the adjustment accuracy of damping vibration isolation and realizing the precise vibration isolation control of the device.

[0020] 4. The electromagnetic damping vibration isolation device of this utility model adopts dual magnetic field coupling formed by magnet and coil assembly. By adjusting the direction and magnitude of the current in the coil, the total magnetic field strength is changed, thereby dynamically adjusting the damping force. This avoids the dependence on sensors and controllers of active control systems. It only needs to adjust the current parameters to change the magnetic field magnitude, which can cover the vibration suppression requirements of multiple frequency bands.

[0021] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the embodiments described and the accompanying drawings, which are particularly pointed out. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the electromagnetic damping vibration isolation device according to an embodiment of the present utility model;

[0023] Figure 2 This is a partial cross-sectional structural diagram of the electromagnetic damping vibration isolation device according to an embodiment of the present invention;

[0024] Figure 3 This is a three-dimensional cross-sectional structural diagram of the coil clamp according to an embodiment of the present utility model;

[0025] Figure 4 This is a partial cross-sectional structural diagram of two sides of the coil clamp according to an embodiment of the present invention.

[0026] Figure label:

[0027] 1-Coil assembly; 11-Coil; 12-Coil clamp; 121-Clamp body; 1211-Heat sink; 122-Water cooling pipe; 1221-Water inlet; 1222-Water outlet; 123-Coil cover; 2-Conductor block; 3-Magnet; 4-Load platform; 5-Positioning pin; 6-Heat transfer oil; 7-Base. Detailed Implementation

[0028] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0029] Example 1

[0030] This embodiment discloses an electromagnetic damping vibration isolation device, including a coil assembly 1 and a conductor block 2; as shown Figures 1 to 4As shown, the coil assembly 1 includes a coil 11 and a coil clamp 12; the coil clamp 12 is clamped on the outer periphery of the coil 11; the coil clamp 12 includes a clamp body 121 and a water cooling pipe 122; a heat sink 1211 is provided on the clamp body 121, the heat sink 1211 extends radially along the coil 11, and multiple heat sinks 1211 are evenly spaced around the coil 11; the water cooling pipe 122 surrounds the clamp body 121; the conductor block 2 is located between at least two sets of coil assemblies 1, and the magnetic poles of each pair of coil assemblies 1 are opposite to each other, so that the conductor block 2 can be subjected to electromagnetic damping force when vibration occurs.

[0031] In this embodiment of the electromagnetic damping vibration isolation device, when the two oppositely arranged coils 11 are energized, a magnetic field is formed between the two sets of coil assemblies 1 due to the opposite magnetic poles of the two coils, so that the conductor block 2 is wholly or partially placed in the magnetic field space. When the conductor block 2 moves in the magnetic field due to vibration, according to the principle of electromagnetic damping, the conductor block 2 of the coil 11 will be subjected to resistance in the opposite direction of movement, thereby suppressing its movement and producing an active vibration reduction effect.

[0032] This embodiment of the electromagnetic damping vibration isolation device, by setting up relatively arranged coil assemblies 1, can form a damping magnetic field space between the two sets of coil assemblies 1. The magnetic field strength can be changed by adjusting the direction and magnitude of the current in the coil 11, thereby dynamically adjusting the magnitude of the damping force on the conductor block 2, improving the flexibility and practicality of the device. At the same time, by setting up a water-cooling pipe 122 and a clamp body 121 with a heat sink 1211 in the coil clamp 12, forced convection heat exchange can be implemented on the coil 11. When the volume of the coil assembly 1 is large or the heat generation is high, continuous and effective cooling can be ensured, improving heat dissipation efficiency and avoiding the degradation of the overall performance of the device due to overheating and aging of the coil 11, thus improving the life of the vibration isolation device. In addition, by setting up a water-cooling pipe 122 to dissipate heat from the coil assembly 1, the cooling medium can also be physically isolated from the coil 11, avoiding interference of the cooling medium on the uniformity of the magnetic field and ensuring the stability of the magnetic field strength.

[0033] In order to keep the damping force on conductor block 2 balanced, such as Figure 2 As shown, each pair of oppositely arranged coils 11 is wound with at least the same wire, and the two ends of the wire are respectively connected to the positive and negative terminals of the power supply, so that the current magnitude of each pair of oppositely arranged coil assemblies 1 is always consistent, thereby ensuring that the magnetic field strength on both sides of the conductor block 2 is also consistent, so that the damping force on both sides of the conductor block 2 is always balanced, and at the same time, it also facilitates the synchronous control of the same pair of coils 11, simplifying the structure of the coil assembly 1.

[0034] Considering the varying vibration isolation accuracy requirements of conductor blocks 2, coil 11 includes at least two wires, each with a different diameter, to facilitate finer adjustment of the output damping force. For example, coil 11 can be composed of three different cross-sectional area wires wound together, each with a diameter of 0.1 mm. 2 0.2mm 2 and 0.5mm 2 Because the current in coils 11 of different diameters is different, the damping force output by coil assembly 1 can be adjusted more precisely, thus the damping vibration isolation adjustment accuracy is higher and the effect is more stable, realizing the precise vibration isolation control of the device.

[0035] To improve the cooling efficiency of the water-cooled pipe 122 for the coil 11, such as Figure 4 As shown, the water-cooled pipe 122 in this embodiment is a spiral channel, with the inlet 1221 and outlet 1222 of the water-cooled pipe 122 respectively located on both sides of the fixture body 121. Since the water-cooled pipe 122 spirally and evenly surrounds the outer circumference of the coil 11, it can rapidly and uniformly cool the coil 11. Simultaneously, by providing the inlet 1221 and outlet 1222 on both sides of the fixture body 121, the water-cooled pipe 122 can be connected to an external cooling water pump, ensuring the cooling and circulating supply of the cooling medium.

[0036] When the electromagnetic damping vibration isolation device also includes a coil assembly 1 with a smaller volume or less heat generation from the coil 11, such as Figure 3 As shown, the coil 11 can dissipate heat through the heat-conducting oil 6 applied to the contact surface with the coil clamp 12.

[0037] To ensure the damping and vibration isolation device has good flexibility and a large magnetic field strength, a magnet 3 is usually arranged in the channel of each coil 11. Figure 2 As shown, magnet 3 is arranged within the channel of coil 11 along the centerline of coil 11. Magnet 3 can generate a constant fundamental magnetic field H. 磁 When coil 11 is energized, it generates an adjustable magnetic field H. 线 When the direction of the magnetic field of coil 11 is the same as the direction of the magnetic field of magnet 3, the total magnetic field H 总 The magnetic field of coil 11 is enhanced when the direction of the current in coil 11 is changed so that the direction of the magnetic field of coil 11 is opposite to the direction of the magnetic field of magnet 3. 总 This effect is mitigated. The specific calculation formula is as follows:

[0038] H 总 =H 磁 ±H 线

[0039] in,

[0040] H 线=N·I / L e

[0041] N is the number of turns of coil 221, I is the current through coil 11, and L... e The effective magnetic path length of coil 11.

[0042] The magnitude of the damping force F is controlled by adjusting the magnitude of the current, thereby changing the total magnetic field strength.

[0043]

[0044] L is the effective length of the conductor in the magnetic field, υ is the vibration velocity, and R is the conductor resistance.

[0045] The electromagnetic damping vibration isolation device in this embodiment uses a dual magnetic field coupling formed by a magnet 3 and a coil assembly 1. By adjusting the direction and magnitude of the current in the coil 11, the total magnetic field strength is changed, thereby dynamically adjusting the damping force. This avoids the reliance on sensors and controllers in an active control system. It only requires adjusting the current parameters to change the magnetic field magnitude, and can cover the vibration suppression requirements of multiple frequency bands.

[0046] To stabilize the position between magnet 3 and coil 11, such as Figure 1 As shown, the coil clamp 12 also includes coil covers 123. The two coil covers 123 are threadedly connected to both ends of the clamp body 121. The two ends of the magnet 3 are respectively fixed on the two coil covers 123, thereby ensuring a fixed connection with the coil assembly 1.

[0047] like Figure 1 and Figure 2 As shown, in this embodiment, a load platform 4 is fixedly connected to the top of the conductor block 2. The equipment requiring vibration reduction is fixed on the load platform 4, thereby achieving vibration isolation for the equipment. The conductor block 2 is fixed below the load platform 4, which also lowers the overall center of gravity of the vibrating body composed of the equipment, the load platform 4, and the conductor block 2, reducing the eccentricity during vibration. Optionally, the conductor block 2 can be made of copper, aluminum, or iron.

[0048] like Figure 1 and Figure 2 As shown, considering safety during transportation, a positioning pin 5 is detachably connected to the coil clamp 12 and the conductor block 2 during transport. The positioning pin 5 passes through both the coil clamp 12 and the conductor block 2, thus connecting them into a single unit. Preferably, a positioning pin 5 is installed at each of the two diagonal points at the upper and lower ends of the coil clamp 12, thereby fixing the relative positions of the coil clamp 12 and the conductor block 2 through these two diagonal positioning points. In use, the positioning pins 5 are first removed from the device, separating the conductor block 2 and the load platform 4 from the coil assembly 1, and then the base 7 and the load platform 4 of the device are fixed respectively.

[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electromagnetic damping vibration isolation device, characterized in that, It includes a coil assembly (1) and a conductor block (2); The coil assembly (1) includes a coil (11) and a coil clamp (12); the coil clamp (12) clamps the outer periphery of the coil (11); The coil clamp (12) includes a clamp body (121) and a water-cooling pipe (122); The fixture body (121) is provided with a heat sink (1211), the heat sink (1211) extends along the radial direction of the coil (11), and a plurality of heat sinks (1211) are evenly spaced around the coil (11). The water-cooled pipe (122) surrounds the clamp body (121); The conductor block (2) is located between at least two sets of coil assemblies (1), with the magnetic poles of each pair of coil assemblies (1) opposite to each other.

2. The electromagnetic damping vibration isolation device according to claim 1, characterized in that, The two oppositely arranged coils (11) are wound using at least the same wire.

3. The electromagnetic damping vibration isolation device according to claim 2, characterized in that, The coil (11) includes at least two wires, each with a different diameter, to allow for flexible adjustment of the generated damping force.

4. The electromagnetic damping vibration isolation device according to claim 3, characterized in that, The water-cooled pipe (122) is a spiral channel, and the inlet (1221) and outlet (1222) of the water-cooled pipe (122) are respectively opened on both sides of the fixture body (121).

5. The electromagnetic damping vibration isolation device according to any one of claims 1 to 4, characterized in that, It also includes a magnet (3), which is arranged in the channel of the coil (11) along the center line direction of the coil (11).

6. The electromagnetic damping vibration isolation device according to claim 5, characterized in that, The coil clamp (12) also includes coil covers (123), and the two coil covers (123) are threadedly connected to both ends of the clamp body (121). The two ends of the magnet (3) are respectively fixed on the two coil covers (123).

7. The electromagnetic damping vibration isolation device according to any one of claims 1 to 4, characterized in that, The conductor block (2) is made of copper, aluminum or iron.

8. The electromagnetic damping vibration isolation device according to claim 7, characterized in that, It also includes a load platform (4), the bottom of which is fixedly connected to the top of the conductor block.

9. The electromagnetic damping vibration isolation device according to claim 8, characterized in that, It also includes a positioning pin (5), which is detachably connected to the coil clamp (12) and the conductor block (2) and passes through both the coil clamp (12) and the conductor block (2).

10. The electromagnetic damping vibration isolation device according to any one of claims 1 to 4, characterized in that, The contact surface between the coil clamp (12) and the coil (11) is coated with heat-conducting oil.

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