CN216242022U - High static low dynamic stiffness electromagnetic vibration isolator - Google Patents
High static low dynamic stiffness electromagnetic vibration isolator Download PDFInfo
- Publication number
- CN216242022U CN216242022U CN202122965863.0U CN202122965863U CN216242022U CN 216242022 U CN216242022 U CN 216242022U CN 202122965863 U CN202122965863 U CN 202122965863U CN 216242022 U CN216242022 U CN 216242022U
- Authority
- CN
- China
- Prior art keywords
- stiffness
- electromagnet
- guide
- vibration isolator
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Vibration Prevention Devices (AREA)
Abstract
The utility model belongs to the technical field of low-frequency vibration isolation structures, and particularly relates to an electromagnetic vibration isolator with high static stiffness and low dynamic stiffness. The vibration isolation device comprises a vibration isolation base, and a positive stiffness component and a negative stiffness component which are arranged on the vibration isolation base; the vibration isolation base includes: the movable plate, the supporting plate, the plurality of guide shafts and the compression spring; the positive stiffness assembly includes: the device comprises an armature connecting piece, a suspension bracket, a first electromagnet and an armature; the negative stiffness assembly comprises: the second electromagnet, the magnet guide mechanism, the permanent magnet and the limiting mechanism; the utility model is used for solving the problem that the vibration isolation performance of the vibration isolator is reduced or is not matched with the original vibration isolation characteristic when the working condition, the external excitation change and the elastic element are aged in the actual engineering, and the dynamic and static parameters of the system are adjusted by utilizing the rigidity devices with the electromagnets at two positions, so that the vibration isolator can deal with the influence of the working condition or the structural change of the system on the original system, and the vibration isolation performance required by the vibration isolator with high static and low dynamic rigidity is always kept.
Description
Technical Field
The utility model belongs to the technical field of low-frequency vibration isolation structures, and particularly relates to an electromagnetic vibration isolator with high static stiffness and low dynamic stiffness.
Background
The high static low dynamic stiffness vibration isolator is characterized in that a positive stiffness mechanism and a negative stiffness mechanism are connected in parallel, the positive stiffness mechanism determines the bearing capacity of the vibration isolator, and the negative stiffness mechanism is used for reducing the dynamic stiffness of the system. Therefore, the high static stiffness vibration isolator and the low dynamic stiffness vibration isolator have high static stiffness and low dynamic stiffness, can bear large equipment load mass, and simultaneously enable equipment to have low dynamic stiffness when vibrating at a static balance position. However, the currently researched high-static-low dynamic stiffness vibration isolator is quite complex in structure and quite inconvenient to install and use, is limited to laboratories and theoretical verification purposes at present, and is difficult to realize industrial application.
Disclosure of Invention
The utility model aims to provide the electromagnetic vibration isolator with high static stiffness and low dynamic stiffness, which is convenient to install, use, produce, use and maintain, and has good practicability.
In order to achieve the purpose, the utility model adopts the following technical scheme.
A high static low dynamic stiffness electromagnetic vibration isolator comprises a mounting base 1, and a positive stiffness component 2 and a negative stiffness component 3 which are arranged on the mounting base 1;
the mounting base 1 includes: a movable plate 1a, a support plate 1b, a plurality of guide shafts 1c, and an elastic support 1 d;
the supporting plate 1b is fixedly arranged, and the guide shaft 1c is vertically arranged on the supporting plate 1 b; the movable plate 1a is arranged on the upper side of the supporting plate 1b, and a through hole which can be sleeved on the guide shaft 1c is formed in the movable plate 1 a; the through holes are uniformly arranged on the edge of the movable plate 1 a; the supporting plate 1b is provided with a through hole at a corresponding position; the supporting plate 1b is provided with a through hole at a corresponding position; sliding bearings 1e are arranged in the through holes and the through holes, and the guide shafts 1c are sleeved in the sliding bearings 1 e; the positive stiffness component 2 and the negative stiffness component 3 are arranged between the movable plate 1a and the supporting plate 1b, and two ends of the elastic supporting piece 1d respectively abut against the movable plate 1a and the supporting plate 1 b;
the positive stiffness assembly 2 includes: the device comprises an armature connecting piece 2a, a suspension bracket 2b, a first electromagnet 2c and an armature 2 d; the suspension bracket 2b is fixed on the support plate 1b, and the first electromagnet 2c is fixedly arranged on the suspension bracket 2 b; the upper end of the armature connecting piece 2a is fixed on the movable plate 1a, and the lower end extends downwards and is close to the suspension bracket 2 b; the armature 2d is fixedly arranged at the lower end of the armature connecting piece 2a and extends towards one side of the first electromagnet 2c, and the first electromagnet 2c generates electricity to generate magnetic force so that the armature connecting piece 2a has force moving up and down;
the negative stiffness component 3 comprises: the second electromagnet 3a, the magnet guide mechanism 3b, the permanent magnet 3c and the limiting mechanism 3 d;
the second electromagnet 3a is fixedly arranged on the supporting plate 1b, and the magnetic core of the second electromagnet 3a is horizontally arranged along the left-right direction;
the magnet guide mechanism 3b includes: two linear guide rails 3e symmetrically arranged on the left side and the right side of the second electromagnet 3a, and two permanent magnet supporting seats 3f arranged on the linear guide rails 3 e;
the permanent magnet support seat 3f can move left and right on the linear guide rail 3 e; two permanent magnets 3c are arranged on the two permanent magnet supporting seats 3f respectively;
the limiting mechanism 3d includes: two horizontal push rods 3g connected to the permanent magnet support base 3f, and two limit arms 3j connected to the movable plate 1 a;
the horizontal push rod 3g extends to a position away from the second electromagnet 3a along the horizontal direction to form an extrusion part 30 g;
the lower end of the limiting arm 3j is provided with a guide part 3k, the height of the guide part 3k is consistent with that of the horizontal push rod 3g, and one side facing the horizontal push rod 3g is provided with an arc-shaped guide surface 30 k;
the pressing portion 30g abuts against the arc-shaped guide surface 30k and moves vertically along the arc-shaped guide surface 30 k.
The further improvement or the preferred embodiment of the electromagnetic vibration isolator with high static stiffness and low dynamic stiffness further comprises that the movable plate 1a is a rectangular flat plate, and the through holes are formed in four corners of the movable plate 1 a; still including setting up guide bar 1g between guiding axle 1c, guide bar 1g is fixed to be set up on backup pad 1b, and the cover is equipped with elastic support piece on guide bar 1g, is provided with the hole that supplies guide bar 1g to pass on the fly leaf 1 a.
The further improvement or the preferred embodiment of the electromagnetic vibration isolator with high static stiffness and low dynamic stiffness further comprises that the negative stiffness component 3 is arranged in the center of the support plate 1b, and the positive stiffness component 2 is arranged on the front side or the rear side of the negative stiffness component 3;
the armature connecting piece 2a is of an L-shaped structure and comprises a vertical connecting arm 20a vertically arranged on the front side or the rear side of the negative stiffness component 3 and a transverse connecting arm 20b connected to the top end of the vertical connecting arm 20a and extending to the center of the supporting plate 1b, a connecting plate 20c is arranged on the upper side of the tail end of the transverse connecting arm 20b, and the connecting plate 20c is detachably connected to the center of the lower end face of the movable plate 1 a.
A further improvement or a preferred embodiment of the electromagnetic vibration isolator with high static stiffness and low dynamic stiffness further comprises that the suspension bracket 2b is arranged on the front side or the rear side of the negative stiffness component 3; the suspension bracket 2b is of a v-shaped structure 21274;
the first electromagnet 2c includes: e-shaped silicon steel sheet groups 20d respectively arranged on two cross arms of the v-21274-shaped suspension bracket 2b and differential coils 20E wound on the E-shaped silicon steel sheet groups 20 d; the openings of the two E-shaped silicon steel sheet groups 20d are arranged oppositely; the armature 2d extends horizontally between the two E-shaped silicon steel sheet sets 20 d.
The further improvement or the preferred embodiment of the electromagnetic vibration isolator with high static stiffness and low dynamic stiffness further comprises that the negative stiffness component 3 further comprises an electromagnet support seat, and the electromagnet support seat consists of a support rod 30a and an electromagnet mounting frame 30b provided with the top end of the support rod 30 a; the supporting rod 30a is vertical to the supporting plate 1b, and the lower end of the supporting rod is fixed at the center of the upper end face of the supporting plate 1 b; the second electromagnet 3a is fixedly mounted on the electromagnet mounting bracket 30 b.
A further improvement or a preferred embodiment of the electromagnetic vibration isolator with high static stiffness and low dynamic stiffness further comprises that the second electromagnet 3a comprises a columnar permanent magnet 30c and a spiral coil 30 d;
the negative stiffness component 3 further comprises guide rail mounting seats 30e, and the guide rail mounting seats 30e are respectively mounted on the left side and the right side of the electromagnet supporting seat; the linear guide rail 3e is arranged at the top of the guide rail mounting seat 30 e; the lower end of the permanent magnet support seat 3f is provided with a slide block 30f which can be matched with the linear guide rail 3 e.
A further improvement or a preferred embodiment of the electromagnetic vibration isolator with high static stiffness and low dynamic stiffness further comprises that the extrusion part 30g is of a spherical structure; the arc-shaped guide surface 30k is provided with a guide groove with a semicircular section, and the squeezing portion 30g slides along the guide groove with the semicircular section.
The further improvement or the preferred embodiment of the electromagnetic vibration isolator with high static stiffness and low dynamic stiffness further comprises that the elastic supporting piece 1d is a compression spring, and the compression spring is sleeved on the guide shaft 1 c.
The beneficial effects are that:
the high-static-low dynamic stiffness electromagnetic vibration isolator is used for solving the problems of complex structure, inconvenient use and control and industrial application type inspection of the existing similar equipment or products, has a simple control mode, less calculation and analysis data of system stiffness, can conveniently change and control the overall stiffness vibration isolation parameters of the system by controlling the current magnitude of two electromagnets, has small volume and stable support, is convenient to apply to various types of vibration isolation occasions, and has good industrial application prospect.
Drawings
FIG. 1 is a front view of an electromagnetic isolator with high static and low dynamic stiffness;
FIG. 2 is an oblique view of the electromagnetic isolator with high static and low dynamic stiffness;
FIG. 3 is a side view of the electromagnetic isolator with high static and low dynamic stiffness;
FIG. 4 is a first schematic structural view of a positive stiffness assembly;
FIG. 5 is a structural schematic diagram II of a positive stiffness assembly;
FIG. 6 is a first schematic structural view of a negative stiffness assembly;
FIG. 7 is a structural schematic diagram II of a negative stiffness assembly;
wherein the reference numerals include:
the device comprises a mounting base 1, a movable plate 1a, a support plate 1b, a plurality of guide shafts 1c, an elastic support member 1d, a sliding bearing 1E, a guide rod 1g, a positive stiffness component 2, an armature connecting piece 2a, a connecting arm 20b, a connecting plate 20c, an E-shaped silicon steel sheet group 20d, a differential coil 20E, a suspension bracket 2b, a first electromagnet 2c, an armature 2d, a negative stiffness component 3, a second electromagnet 3a, a magnet guide mechanism 3b, a permanent magnet 3c, a limiting mechanism 3d, a linear guide rail 3E, a permanent magnet support seat 3f, a horizontal push rod 3g, a support rod 30a, an electromagnet mounting frame 30b, a columnar permanent magnet 30c, a spiral coil 30d, a guide rail mounting seat 30E, a sliding block 30f, an extrusion part 30g, a limiting arm 3j, a guide part 3k and an arc-shaped guide surface 30 k.
Detailed Description
The present invention will be described in detail with reference to specific examples.
The utility model discloses an electromagnetic vibration isolator with high static stiffness and low dynamic stiffness, which comprises a mounting base 1, and a positive stiffness component 2 and a negative stiffness component 3 which are arranged on the mounting base 1;
as shown in fig. 1 and 2, the mounting base 1 includes: a movable plate 1a, a support plate 1b, and a plurality of guide shafts 1c and elastic supports 1 d;
the supporting plate 1b is fixedly arranged, and the guide shaft 1c is vertically arranged on the supporting plate 1 b; the movable plate 1a is arranged on the upper side of the supporting plate 1b, and a through hole which can be sleeved on the guide shaft 1c is formed in the movable plate 1 a; the compression bullet 1d is sleeved on the guide shaft 1c, and two ends of the compression bullet respectively prop against the movable plate 1a and the supporting plate 1 b; the positive stiffness component 2 and the negative stiffness component 3 are arranged between the movable plate 1a and the supporting plate 1 b;
wherein the mounting base is used for supporting and connecting integrally, and is used as the rigidity mechanism and the supporting structure and treat the connection fixed knot between the vibration isolation equipment or article to construct simultaneously, and backup pad 1a is connected with ground or basic supporting structure, or directly forms by the part of supporting structure, and fly leaf 1a can move about from top to bottom for support needs real equipment or structure, during the in-service use, fly leaf and backup pad are not necessarily the flat structure of standard, still probably box-like or all kinds of platform fixed knot that are convenient for fix and support structure as required.
As a general and simple structure scheme, the movable plate 1a can be designed as a flat plate, and in order to ensure the stability of the device on the upper side, the movable plate 1a is horizontally arranged; the movable plate 1a can be provided with various structures such as hole grooves and columns for positioning, fixing and supporting, the movable plate is supported by a bottom spring, and through holes for controlling the distribution positions of the springs are uniformly arranged on the edge of the movable plate 1a to ensure balanced stress; the supporting plate 1b is provided with a through hole at a corresponding position; sliding bearings 1e are arranged in the through holes and the through holes, and the guide shafts 1c are sleeved in the sliding bearings 1 e. The sliding bearing is favorable for improving the smoothness of the up-and-down movement of the movable plate, reduces abrasion and enables the vibration isolation system to be more flexible.
For convenience of assembly, in the embodiment, the movable plate 1a is a rectangular flat plate, and the through holes are formed at four corners of the movable plate 1 a;
in order to improve device stability, guarantee that fly leaf 1a can the stable support, prevent that the slope card is dead, can also set up guide bar 1g between guiding axle 1c if necessary, guide bar 1g is fixed to be set up on backup pad 1b, and the cover is equipped with elastic support spare on guide bar 1g, is provided with the hole that supplies guide bar 1g to pass on fly leaf 1 a. The guide rod 1g is used for supporting and assisting the guide shaft in limiting, guiding and assembling alignment.
As shown in fig. 3 and 4, the positive stiffness module 2 includes: the device comprises an armature connecting piece 2a, a suspension bracket 2b, a first electromagnet 2c and an armature 2 d;
the suspension bracket 2b is fixed on the support plate 1b, and the first electromagnet 2c is fixedly arranged on the suspension bracket 2 b; the upper end of the armature connecting piece 2a is fixed on the movable plate 1a, and the lower end extends downwards and is close to the suspension bracket 2 b; the armature 2d is fixedly arranged at the lower end of the armature connecting piece 2a and extends towards one side of the first electromagnet 2c, and the first electromagnet 2c generates electricity to generate magnetic force so that the armature connecting piece 2a has force moving up and down;
in a specific using process, the armature can be stressed and move up and down under the action of electromagnetic force, and finally the armature connecting piece and the upper side movable plate 1a are driven to be stressed and move so as to control positive stiffness system parameters, and the electromagnet is fixed on the supporting plate 1b and is the interaction between the supporting plate and the movable plate.
The suspension bracket 2b is arranged on the front side or the rear side of the negative stiffness component 3; in order to facilitate the installation of the silicon steel sheet group on the electromagnet, the suspension bracket 2b adopts a v-21274h-shaped structure;
the first electromagnet 2c includes: e-shaped silicon steel sheet groups 20d respectively arranged on two cross arms of the v-21274-shaped suspension bracket 2b and differential coils 20E wound on the E-shaped silicon steel sheet groups 20 d; the openings of the two E-shaped silicon steel sheet groups 20d are arranged oppositely; the armature 2d extends horizontally between the two E-shaped silicon steel sheet sets 20 d.
As shown in fig. 6 and 7, the negative stiffness module 3 includes, similar to the structural principle of the positive stiffness system: the second electromagnet 3a, the magnet guide mechanism 3b, the permanent magnet 3c and the limiting mechanism 3 d;
the second electromagnet 3a is fixedly arranged on the supporting plate 1b, and the magnetic core of the second electromagnet 3a is horizontally arranged along the left-right direction;
the magnet guide mechanism 3b includes: two linear guide rails 3e symmetrically arranged on the left side and the right side of the second electromagnet 3a, and two permanent magnet supporting seats 3f arranged on the linear guide rails 3 e;
the permanent magnet support seat 3f can move left and right on the linear guide rail 3 e; two permanent magnets 3c are arranged on the two permanent magnet supporting seats 3f respectively;
the limiting mechanism 3d includes: two horizontal push rods 3g connected to the permanent magnet support base 3f, and two limit arms 3j connected to the movable plate 1 a;
the horizontal push rod 3g extends to a position away from the second electromagnet 3a along the horizontal direction to form an extrusion part 30 g;
the lower end of the limiting arm 3j is provided with a guide part 3k, the height of the guide part 3k is consistent with that of the horizontal push rod 3g, and one side facing the horizontal push rod 3g is provided with an arc-shaped guide surface 30 k; the extruding part 30g props against the arc-shaped guide surface 30k and moves vertically along the arc-shaped guide surface 30k, and in order to ensure that the relative movement of the extruding part 30g and the arc-shaped guide surface 30k is stable and aligned vertically, in the embodiment, the extruding part 30g is of a spherical structure; the arc-shaped guide surface 30k is provided with a guide groove with a semicircular section, and the squeezing portion 30g extends into the guide groove with a semicircular section and slides along the guide groove with a semicircular section.
In order to facilitate the overall structure and the adjustment and recovery of the system rigidity characteristics, as a preferred scheme, in the embodiment, the negative rigidity component 3 is arranged at the center of the support plate 1b, and the positive rigidity component 2 is arranged at the front side or the rear side of the negative rigidity component 3;
in order to ensure the balance of the stress point position, the armature connecting piece 2a is of an L-shaped structure and comprises a vertical connecting arm 20a vertically arranged on the front side or the rear side of the negative stiffness component 3 and a transverse connecting arm 20b connected to the top end of the vertical connecting arm 20a and extending to the central position of the supporting plate 1b, a connecting plate 20c is arranged on the upper side of the tail end of the transverse connecting arm 20b, and the connecting plate 20c is detachably connected to the central position of the lower end face of the movable plate 1 a.
The negative stiffness component 3 also comprises an electromagnet support seat, and the electromagnet support seat consists of a support rod 30a and an electromagnet mounting rack 30b provided with the top end of the support rod 30 a; the supporting rod 30a is vertical to the supporting plate 1b, and the lower end of the supporting rod is fixed at the center of the upper end face of the supporting plate 1 b; the second electromagnet 3a is fixedly mounted on the electromagnet mounting bracket 30 b.
The second electromagnet 3a includes a columnar permanent magnet 30c and a spiral coil 30 d;
the negative stiffness component 3 further comprises guide rail mounting seats 30e, and the guide rail mounting seats 30e are respectively mounted on the left side and the right side of the electromagnet supporting seat; the linear guide rail 3e is arranged at the top of the guide rail mounting seat 30 e; the lower end of the permanent magnet support seat 3f is provided with a slide block 30f which can be matched with the linear guide rail 3 e.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. The high-static-low dynamic stiffness electromagnetic vibration isolator is characterized by comprising a mounting base (1), and a positive stiffness component (2) and a negative stiffness component (3) which are arranged on the mounting base (1);
the mounting base (1) comprises: a movable plate (1a), a support plate (1b), a guide shaft (1c) and an elastic support (1 d);
the supporting plate (1b) is fixedly arranged, and the guide shaft (1c) is vertically arranged on the supporting plate (1 b); the movable plate (1a) is arranged on the upper side of the support plate (1b), and a through hole which can be sleeved on the guide shaft (1c) is formed in the movable plate (1 a); the through holes are uniformly arranged on the edge of the movable plate (1 a); the supporting plate (1b) is provided with a through hole at a corresponding position; sliding bearings (1e) are arranged in the through holes and the through holes, and the guide shafts (1c) are sleeved in the sliding bearings (1 e); the positive stiffness component (2) and the negative stiffness component (3) are arranged between the movable plate (1a) and the supporting plate (1b), and two ends of the elastic supporting piece (1d) respectively abut against the movable plate (1a) and the supporting plate (1 b);
the positive stiffness assembly (2) comprises: the device comprises an armature connecting piece (2a), a suspension bracket (2b), a first electromagnet (2c) and an armature (2 d);
the suspension bracket (2b) is fixed on the support plate (1b), and the first electromagnet (2c) is fixedly arranged on the suspension bracket (2 b); the upper end of the armature connecting piece (2a) is fixed on the movable plate (1a), and the lower end extends downwards and is close to the suspension bracket (2 b); the armature (2d) is fixedly arranged at the lower end of the armature connecting piece (2a) and extends towards one side of the first electromagnet (2c), and the first electromagnet (2c) generates electricity to generate magnetic force so that the armature connecting piece (2a) has force moving up and down;
the negative stiffness assembly (3) comprises: a second electromagnet (3a), a magnet guide mechanism (3b), a permanent magnet (3c) and a limiting mechanism (3 d);
the second electromagnet (3a) is fixedly arranged on the supporting plate (1b), and the magnetic core of the second electromagnet (3a) is horizontally arranged along the left-right direction;
the magnet guide mechanism (3b) includes: two linear guide rails (3e) symmetrically arranged on the left side and the right side of the second electromagnet (3a), and two permanent magnet supporting seats (3f) arranged on the linear guide rails (3 e);
the permanent magnet supporting seat (3f) can move left and right on the linear guide rail (3 e); two permanent magnets (3c) are arranged on the two permanent magnet supporting seats (3f) respectively;
the limiting mechanism (3d) comprises: two horizontal push rods (3g) connected to the permanent magnet support seat (3f), and two limit arms (3j) connected to the movable plate (1 a);
the horizontal push rod (3g) extends to a position away from the second electromagnet (3a) along the horizontal direction to form an extrusion part (30 g);
the lower end of the limiting arm (3j) is provided with a semicircular guide part (3k), the height of the semicircular guide part (3k) is consistent with that of the horizontal push rod (3g), and one side, facing the horizontal push rod (3g), is provided with an arc-shaped guide surface (30 k);
the pressing portion (30g) abuts against the arc-shaped guide surface (30k) and moves vertically along the arc-shaped guide surface (30 k).
2. The electromagnetic vibration isolator with high static stiffness and low dynamic stiffness as claimed in claim 1, characterized in that the movable plate (1a) is a rectangular flat plate, and the through holes are arranged at four corners of the movable plate (1 a); still including setting up guide bar (1g) between guiding axle (1c), guide bar (1g) is fixed to be set up on backup pad (1b), and the elastic support piece is equipped with to the cover on guide bar (1g), is provided with the hole that supplies guide bar (1g) to pass on fly leaf (1 a).
3. The electromagnetic vibration isolator with high static stiffness and low dynamic stiffness as claimed in claim 1, characterized in that the negative stiffness component (3) is arranged at the center of the support plate (1b), and the positive stiffness component (2) is arranged at the front side or the rear side of the negative stiffness component (3);
armature connecting piece (2a) are L shape structure, including vertical connecting arm (20a) that vertical setting was in negative stiffness subassembly (3) front side or rear side to and connect horizontal connecting arm (20b) on vertical connecting arm (20a) top and extend to backup pad (1b) central point and put, the terminal upside of horizontal connecting arm (20b) is provided with connecting plate (20c), and connecting plate (20c) detachably connects and puts at terminal surface central point under fly leaf (1 a).
4. The electromagnetic vibration isolator with high static stiffness and low dynamic stiffness as claimed in claim 3, characterized in that the suspension bracket (2b) is arranged on the front side or the rear side of the negative stiffness component (3); the suspension bracket (2b) is of a structure of a shape of a letter 21274;
the first electromagnet (2c) comprises: e-shaped silicon steel sheet groups (20d) respectively arranged on two cross arms of the v-21274-shaped suspension bracket (2b), and differential coils (20E) wound on the E-shaped silicon steel sheet groups (20 d);
the openings of the two E-shaped silicon steel sheet groups (20d) are arranged oppositely; the armature (2d) horizontally extends between the two E-shaped silicon steel sheet groups (20 d).
5. The electromagnetic vibration isolator with high static stiffness and low dynamic stiffness as claimed in claim 1, characterized in that the negative stiffness component (3) further comprises an electromagnet support seat, and the electromagnet support seat is composed of a support rod (30a) and an electromagnet mounting frame (30b) provided with the top end of the support rod (30 a); the supporting rod (30a) is vertical to the supporting plate (1b) and the lower end of the supporting rod is fixed at the central position of the upper end face of the supporting plate (1 b); the second electromagnet (3a) is fixedly arranged on the electromagnet mounting frame (30 b).
6. The electromagnetic vibration isolator with high static stiffness and low dynamic stiffness as claimed in claim 5, characterized in that the second electromagnet (3a) comprises a columnar permanent magnet (30c) and a spiral coil (30 d);
the negative stiffness component (3) further comprises guide rail mounting seats (30e), and the guide rail mounting seats (30e) are respectively mounted on the left side and the right side of the electromagnet supporting seat; the linear guide rail (3e) is arranged at the top of the guide rail mounting seat (30 e); the lower end of the permanent magnet supporting seat (3f) is provided with a sliding block (30f) which can be matched with the linear guide rail (3 e).
7. The electromagnetic vibration isolator with high static stiffness and low dynamic stiffness as claimed in claim 1, characterized in that the extrusion part (30g) is a spherical structure; the arc-shaped guide surface (30k) is provided with a guide groove with a semicircular section, and the extrusion part (30g) slides along the guide groove.
8. The electromagnetic vibration isolator with high static stiffness and low dynamic stiffness as claimed in claim 1, characterized in that the elastic supporting piece (1d) is a compression spring which is sleeved on the guide shaft (1 c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122965863.0U CN216242022U (en) | 2021-11-29 | 2021-11-29 | High static low dynamic stiffness electromagnetic vibration isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122965863.0U CN216242022U (en) | 2021-11-29 | 2021-11-29 | High static low dynamic stiffness electromagnetic vibration isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216242022U true CN216242022U (en) | 2022-04-08 |
Family
ID=80958883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122965863.0U Active CN216242022U (en) | 2021-11-29 | 2021-11-29 | High static low dynamic stiffness electromagnetic vibration isolator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216242022U (en) |
-
2021
- 2021-11-29 CN CN202122965863.0U patent/CN216242022U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114033833B (en) | Parameter-adjustable high-static-low dynamic stiffness electromagnetic vibration isolator | |
| CN112880953B (en) | Vibration test device and vibration test method | |
| CN112283285B (en) | Horizontal tuning cantilever type eddy current damper | |
| CN216242022U (en) | High static low dynamic stiffness electromagnetic vibration isolator | |
| CN114812986A (en) | Vibration test system of superconducting maglev train suspension frame | |
| CN111809508A (en) | Low-frequency lever type tuned mass damper | |
| CN110513432B (en) | Double-nonlinear vibration isolation device | |
| CN210374168U (en) | Solar heat pump convenient to installation | |
| CN110261140A (en) | A kind of bidifly vibration experimental rig | |
| CN216519207U (en) | Six-degree-of-freedom hybrid magnetic suspension quasi-zero stiffness vibration isolator | |
| CN211930724U (en) | Device for debugging static balance of inner frame of image stabilization platform | |
| CN115342150A (en) | Multistage magnetic levitation damping mechanism | |
| CN208313509U (en) | Adjustable gravity balance device | |
| CN111254819B (en) | Steel construction bridge shock attenuation support | |
| CN114658783A (en) | Quasi-zero stiffness vibration isolator with adjustable positive and negative stiffness | |
| CN210335910U (en) | Material placing rack | |
| CN209041186U (en) | A kind of shock-damping structure of blower | |
| CN209727455U (en) | A kind of static loading isolation mounting | |
| CN102758875B (en) | Magnetic levitation balance mass framework | |
| CN113124094B (en) | Low-cost linear guide type light shock insulation device | |
| CN217108822U (en) | Auxiliary supporting device for electrical equipment | |
| CN117553095A (en) | Compact type rigidity-adjustable quasi-zero rigidity vibration isolator | |
| CN220498945U (en) | Press-fitting structure adopting fixed-point positioning | |
| CN221647781U (en) | High temperature glass tube supporting structure | |
| CN114754095B (en) | Negative rigidity nonlinear weak magneto negative rigidity structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |