electromagnetically guided vibration isolation device

Abstract

This application provides an electromagnetically guided vibration isolation device, comprising: a base; a guide member connected to the base and extending in a direction perpendicular to the base; a mass body slidably connected to the guide member; a driving member configured to drive the mass body to slide along the guide member, thereby causing the base to vibrate; and a magnetic component for providing a magnetic force to the base to limit the range of movement of the base during vibration. The electromagnetically guided vibration isolation device provided in this application uses magnetic force to limit the range of movement of the base during vibration, thereby avoiding the impact on the performance of the vibration device caused by using physical structures to limit the movement of the base.

Description

Technical Field

[0001] This application relates to the field of geophysical technology, specifically to a vibration isolation device with electromagnetic guidance. Background Technology

[0002] Artificially generating seismic waves using a controlled seismic source is an important method for seismic exploration. The vibration device is the main working mechanism of the controlled seismic source. During the vibration process, it is necessary to limit the displacement of the device's base to prevent it from bouncing off the ground or shifting horizontally. Related technologies typically use vibration isolation airbags to prevent base bouncing and friction plates to prevent base shifting. However, in actual use, vibration isolation airbags may be damaged by environmental objects, such as being scratched by tree branches, leading to functional failure. Furthermore, the friction plates can become a source of interference with the seismic source signal; both factors affect the performance of the vibration device. Summary of the Invention

[0003] In view of the above problems, this application is made in order to provide an electromagnetically guided vibration isolation device that overcomes or at least partially solves the above problems.

[0004] According to an embodiment of this application, an electromagnetically guided vibration isolation device is provided, comprising: a base; a guide member connected to the base and extending in a direction perpendicular to the base; a mass body slidably connected to the guide member; a driving member configured to drive the mass body to slide along the guide member to cause the base to vibrate; and a magnetic component for providing a magnetic force to the base to limit the range of movement of the base during vibration.

[0005] The electromagnetically guided vibration isolation device provided in this application uses magnetic force to limit the range of movement of the base during vibration, thereby avoiding the impact of using physical structures to limit the movement of the base on the performance of the vibration device. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of an electromagnetically guided vibration isolation device according to an embodiment of this application;

[0007] Figure 2 This is a schematic diagram of the layout of the first magnet assembly according to an embodiment of this application;

[0008] Figure 3 This is a schematic diagram of the force analysis of a base according to an embodiment of this application;

[0009] Figure 4 This is a schematic diagram of a third magnet according to an embodiment of this application;

[0010] Figure 5This is a schematic diagram of the force analysis of the base according to another embodiment of this application. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only one embodiment of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0012] An embodiment of this application provides an electromagnetically guided vibration isolation device, referring to... Figure 1 It includes: a base 1, a guide 2, a mass 3, a drive 4, and a magnetic component 5.

[0013] The base 1 is a flat plate structure. In practical applications, the base 1 can be supported on the ground, so that the vibration of the base 1 can be transmitted to the ground to generate seismic waves. The specific material and size of the base 1 can be selected according to actual needs.

[0014] The guide member 2 is connected to the base 1 and extends in a direction perpendicular to the base 1. The mass body 3 is slidably connected to the guide member 2. The drive member 4 is configured to drive the mass body 3 to slide along the guide member 2. Thus, the reaction force generated by the mass body 3 during the sliding process will cause the base 1 to vibrate.

[0015] The guide element 2 can be any structure with a guiding function. For example, the guide element 2 can include one or more guide rods that can pass through the interior of the mass 3 to provide guidance. Preferably, the guide element 2 can include at least two guide rods to prevent the mass 3 from rotating during sliding. Alternatively, the guide element 2 can be a slide rail structure that can be slidably connected to the outer surface of the side wall of the mass 3 to provide guidance.

[0016] Mass 3 is an object with a certain mass, which can drive the base 1 to vibrate through the reaction force generated by itself during the sliding process. Those skilled in the art can reasonably select the specific structure, size, material, etc. of mass 3 according to the actual vibration requirements, without any restrictions.

[0017] The driving component 4 can be a device with a driving function, such as a hydraulic drive device or an electromagnetic drive device. In actual use, the driving component 4 can be controlled to make the mass body 3 slide along the guide 2 at a predetermined frequency and amplitude, thereby causing the base 1 to vibrate at a predetermined frequency and amplitude.

[0018] During the vibration of base 1, the reaction force of the ground may cause base 1 to bounce off the ground, resulting in a decrease in vibration effect. Related technologies usually use vibration isolation airbags to avoid the bounce of the base. However, in actual use, vibration isolation airbags may be damaged by objects in the environment, such as being scratched by tree branches on the ground, resulting in functional failure.

[0019] Meanwhile, in actual use, it is also necessary to prevent the base 1 from moving in the horizontal direction. In related technologies, friction plates are usually used to limit the base 1 in the horizontal direction. However, friction itself is an interference signal that needs to be avoided when designing the seismic source scanning signal. Using friction plates for limiting will affect the effect of using the vibration device to generate seismic waves.

[0020] Therefore, a magnetic component 5 is provided in this embodiment. The magnetic component 5 is configured to provide a magnetic force to the base 1 to limit its range of movement, thereby solving the problems of bounce and / or horizontal limitation mentioned above.

[0021] The magnetic component 5 can provide this magnetic force using two magnetic poles with the same magnetism. Understandably, the closer the two magnetic poles are, the stronger the magnetic force will be. By properly setting the magnetic poles, the base 1 will not be restricted by the magnetic force during normal vibration, but will only be restricted by the magnetic force when the vibration amplitude is large (e.g., about to leave the ground). This avoids both rebound of the base 1 and interference with its normal vibration signal. Those skilled in the art can select the specific arrangement of each magnetic pole in the magnetic component to achieve the above effect according to the actual situation. Some arrangement methods will be described in detail in the relevant sections below, and will not be repeated here.

[0022] The electromagnetically guided vibration isolation device provided in this application uses magnetic force to limit the range of movement of the base during vibration, thereby avoiding the impact of using physical structures to limit the movement of the base on the performance of the vibration device.

[0023] In some embodiments, the magnetic component 5 may specifically provide the base 1 with a magnetic force opposing the extending direction of the guide 2. Figure 1 For example, the guide 2 is perpendicular to the base 1 and extends upward. At this time, a magnetic force perpendicular to the base 1 and downward needs to be provided to limit its movement in the vertical direction to avoid it from bouncing.

[0024] Furthermore, since the mass 3 slides on the guide 2, the force on the base 1 extends in a direction parallel to the guide 2, and the magnetic force provided by the magnetic component 5 is also parallel to the guide 2, but in the opposite direction, so that the two forces can be completely canceled out without shifting, thus preventing the base 1 from being polarized.

[0025] In some embodiments, the magnetic component 5 includes a first magnet group 51 and a second magnet group 52, the first magnet group 51 and the second magnet group 52 having the same polarity. The first magnet group 51 is disposed on the surface of the base 1 facing the guide member 2, and the second magnet group 52 is disposed opposite to the first magnet group 51 and is fixed to an external device. The external device is used to fix the position of the second magnet group 52 so that the first magnet group 51 is subjected to a repulsive force when moving toward the second magnet group 52. The external device can be any suitable device, such as a vehicle, platform, etc. for mounting a vibration device, and is not limited thereto.

[0026] Figure 2 A schematic diagram of the layout of the first magnet group in one embodiment is shown, with reference to... Figure 1 and 2 The first magnet group 51 may include a plurality of first magnets 511 symmetrically distributed along the center of the base 1. At this time, the second magnet group 52 includes a plurality of second magnets 521 respectively disposed opposite to each first magnet 511.

[0027] In this embodiment, the first magnet 511 is symmetrically distributed along the center of the base 1, so that the resultant force provided by the first magnet group 51 is located at the center of the base 1, further avoiding the occurrence of polarization. At the same time, it can also make the force on the base 1 more uniform, effectively improving the relative rigidity of the base 1, and thus helping to improve the vibration accuracy of the vibration device.

[0028] In some embodiments, the base 1 may be rectangular, and a plurality of first magnets 511 may be disposed at two opposite edges of the base 1. In some other embodiments, first magnets 511 may be disposed at all four edges. In some embodiments, the base 1 may also be circular or other suitable shapes, and those skilled in the art can select the arrangement of the first magnets 511 according to the specific shape of the base 1.

[0029] In the above embodiments, those skilled in the art can set the second magnet 521 one by one according to the specific position of the first magnet 511, which will not be described in detail here.

[0030] In some embodiments, reference may still be made to Figure 1The vibration device may include a plate 6 fixed to an external device. The plate 6 may be disposed on the outside of the mass 3 and form a gap with the mass 3. The second magnet assembly 52 may be disposed on the side of the plate 6 facing the base 1.

[0031] In this embodiment, the second magnet assembly 52 is disposed on the plate 6, which facilitates the manufacturing and installation of the second magnet assembly and better ensures that each second magnet 521 in the second magnet assembly 52 can provide the same force to its corresponding first magnet 511, thereby avoiding polarization of the base 1. Furthermore, sufficient gap is left between the plate 6 and the mass 3 to avoid the plate 6 restricting the sliding of the mass 3.

[0032] In some embodiments, the first magnet group 51 and / or the second magnet group 52 are configured to have changeable polarity, so that the magnetic component 5 can also provide a magnetic force to the base 1 toward the plate 6. Understandably, since the base 1 and the plate 6 are not fixedly connected, it may be difficult to operate when the vibration device does not need to work but needs to be moved. Therefore, in this embodiment, the first magnet group 51 and / or the second magnet group 52 are configured to have changeable polarity. When movement is required, the polarity can be changed to change the magnetic force between them from repulsion to attraction, thereby attracting the base 1 to the plate 6, forming a connection and facilitating movement.

[0033] In some embodiments, as described above, the magnetic component 5 can also be used to prevent the base 1 from moving in the horizontal direction. Specifically, the magnetic component 5 can be used to provide a magnetic force to the base 1 from the edge of the base 1 toward or away from the center of the base 1. Figure 3 The diagram illustrates a schematic representation of the magnetic forces acting on the base 1 in one embodiment. The diagram shows the magnetic forces acting from the four edges of the base 1 away from its center. These magnetic forces limit the horizontal displacement of the base 1, effectively preventing displacement. Furthermore, since these magnetic forces are non-contact, they will not interfere with the seismic source signal, ensuring the effectiveness of the vibration device in generating seismic waves.

[0034] In some embodiments, the magnetic component 5 may specifically include a third magnet group 53 and a fourth magnet group 54, the third magnet group 53 and the fourth magnet group 54 having the same magnetism; the third magnet group 53 is arranged circumferentially along the base, the fourth magnet group 54 is arranged opposite to the third magnet group 53 and is fixed to an external device.

[0035] The third magnet group 53 and the fourth magnet group 54 are arranged in a similar manner to the first magnet group 51 and the second magnet group 52. The third magnet group 53 is arranged along the circumference of the base 1 to provide magnetic force at different edges of the base 1, while the fourth magnet group 54 is arranged opposite to the third magnet group 53 and fixed to an external device. The specific arrangement of the third magnet group 53 and the fourth magnet group 54 can be determined by those skilled in the art based on the specific shape of the base 1, and there is no limitation thereto.

[0036] The fourth magnet assembly 54 can be fixed to the same external device as the second magnet assembly 52, or it can be fixed to a different external device; there is no limitation on this. In some embodiments, the fourth magnet assembly 54 can be fixed to the plate 6 described above, thereby simplifying the overall structure of the vibration device.

[0037] In some embodiments, the vibration device may include a plurality of extensions 7 connected to the base 1 and extending in the same direction as the guide 2. The third magnet assembly 53 includes a plurality of third magnets 531 respectively disposed on each extension 7. Understandably, the thickness of the base 1 is generally small. If the third magnet assembly 53 is directly disposed on the side edge of the base 1, it may result in a small volume of the third magnet assembly 53, which may not be able to provide sufficient support force. Furthermore, the fourth magnet assembly 54 needs to be fixed close to the ground, which may be difficult to achieve in some complex environments. Therefore, in this embodiment, the extensions 7 are provided to provide sufficient arrangement space for the third magnet assembly 53 and the fourth magnet assembly 54.

[0038] In some embodiments, refer to Figure 4 The third magnet 531 is configured to extend on the surface of the extension member 7 in the same direction as the extension direction of the extension member 7. Understandably, when the base 1 vibrates, it will move in the extension direction of the extension member 7 (i.e., the vertical direction), which will cause the third magnet 531 to also move. The fourth magnet 541, opposite the third magnet 531, is fixed. If the third magnet 531 is a point magnet, its displacement may cause it to deviate from the fourth magnet 541, resulting in a change or even disappearance of the magnetic force between them. Therefore, in this embodiment, the third magnet 531 is configured as a bar magnet extending in the same direction as the extension direction of the extension member 7. This ensures that even if the third magnet 531 shifts, the alignment between the fourth magnet 541 and the third magnet 531 is maintained, preventing failure. Simultaneously, it simplifies the installation process, eliminating the need for precise alignment during installation.

[0039] In some embodiments, the base 1 can be rectangular, and a plurality of extensions 7 can be respectively disposed at the four corners of the base 1. Each extension 7 can include a first extension plate 71 and a second extension plate 72 extending in the same direction as the guide 2. The first extension plate 71 and the second extension plate 72 are arranged vertically, and a third magnet 531 is respectively disposed on the first extension plate 71 and the second extension plate 72.

[0040] Figure 5 The diagram shows a force analysis of the base 1 in such an embodiment. Compared to Figure 3 In the embodiment shown, the base 1 in this embodiment will be subjected to magnetic forces in more directions, thereby achieving a better limiting effect, especially in limiting the movement of the base 1 along its diagonal direction.

[0041] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above descriptions are merely specific embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An electromagnetic guided vibration isolation device, comprising: a base; a guide connected to the base and extending in a direction perpendicular to the base; a mass body in sliding connection with the guide; a driving member configured to drive the mass body to slide along the guide to cause the base to vibrate; and a magnetic assembly configured to provide a magnetic force to the base to limit the movement range of the base during vibration; wherein the magnetic assembly comprises a first magnet group and a second magnet group, the first magnet group and the second magnet group have the same polarity, the first magnet group is arranged on a surface of the base facing the guide, and the second magnet group is arranged opposite to the first magnet group and fixed to an external device; wherein the vibration device further comprises: a plate body arranged outside the mass body and forming a gap with the mass body, the plate body is fixed to an external device, and the second magnet group is arranged on a surface of the plate body facing the base; wherein the magnetic assembly comprises a third magnet group and a fourth magnet group, the third magnet group and the fourth magnet group have the same polarity; the third magnet group is arranged along the circumference of the base, and the fourth magnet group is arranged opposite to the third magnet group and fixed to an external device; wherein the vibration device further comprises: a plurality of extension members connected to the base and extending in the same direction as the guide; the third magnet group comprises a plurality of third magnets arranged on each of the extension members; wherein the third magnets are arranged to extend on the surface of the extension members in the same direction as the extension direction of the extension members; the base is rectangular, the plurality of extension members are arranged at the four corners of the base, each of the extension members comprises a first extension plate and a second extension plate extending in a direction parallel to the guide, the first extension plate and the second extension plate are arranged perpendicularly, and one of the third magnets is arranged on each of the first extension plate and the second extension plate. The magnetic assembly is configured to provide a magnetic force to the base away from the extension direction of the guide. The first magnet group comprises a plurality of first magnets symmetrically distributed along the center of the base, and the second magnet group comprises a plurality of second magnets arranged opposite to each of the first magnets. The base is rectangular, and the plurality of first magnets are arranged at two opposite edges of the base. The first magnet group and / or the second magnet group are arranged to have changeable polarity, so that the magnetic assembly can also provide a magnetic force to the base towards the plate body. The magnetic assembly is configured to provide a magnetic force to the base from the edge of the base towards or away from the center of the base. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. The vibration apparatus according to claim 1, wherein ​ 3. The vibration apparatus of claim 1, wherein, ​ 4. The vibration apparatus of claim 3, wherein, ​ 5. The vibration apparatus of claim 1, wherein, ​ 6. The vibration apparatus of claim 1, wherein, ​

Images