CN214093789U - Ultralow frequency angular vibration control system - Google Patents
Ultralow frequency angular vibration control system Download PDFInfo
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- CN214093789U CN214093789U CN202023066897.8U CN202023066897U CN214093789U CN 214093789 U CN214093789 U CN 214093789U CN 202023066897 U CN202023066897 U CN 202023066897U CN 214093789 U CN214093789 U CN 214093789U
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Abstract
The utility model discloses an ultra-low frequency angular vibration control system, which comprises an installation frame and an upper cover plate, wherein a plurality of steel wire rope vibration isolation units are connected between the upper cover plate and the installation frame, a space in the height direction is arranged between the upper cover plate and a bottom plate of the installation frame, a vertical anti-impact device is respectively fixed in each steel wire rope vibration isolation unit to realize the integration of vibration isolation and impact resistance, a plurality of pairs of air bag anti-impact devices along the longitudinal direction and the transverse direction are respectively fixed at the corner part of an inner cavity of the installation frame, a plurality of permanent magnets are fixed on the inner wall of the anti-impact protection installation frame along the transverse direction, the longitudinal direction and the posture angle direction, the same permanent magnet is also fixed on the lower surface of the upper cover plate, when the upper cover plate is fixed above the installation frame, a plurality of pairs of permanent magnet groups which are parallel and opposite are formed between the upper cover plate and the mounting frame, negative rigidity is provided to offset positive rigidity provided by the steel wire rope vibration isolation unit, and the multi-direction low rigidity characteristic is realized. Therefore, the system has excellent shock resistance in addition to good vibration control performance.
Description
Technical Field
The utility model relates to a vibration control and system of shocking resistance, concretely relates to ultralow frequency angle vibration control system.
Background
In the maneuvering operation process of the laser defense weapon, the auxiliary equipment operation and the road excitation can be directly transmitted to the laser emitter, the natural frequency of the carrying system can be excited, the torsional vibration of precision equipment such as the laser defense weapon and the like can be caused, and the hitting precision of the laser weapon can be obviously reduced. More importantly, the road excitation and the vibration of the carrying equipment excited by the road excitation contain low-frequency components, and the amplitude of the low-frequency components is larger, so that the influence on the laser weapon is more obvious. Due to the contradiction between the supporting capability and the supporting stability, the traditional vibration control system has high rigidity and high initial vibration isolation frequency, and is difficult to effectively control low-frequency vibration.
In the process of transferring a high-precision battle weapon, abnormal service conditions such as emergency braking and the like caused by pothole pavements and sudden conditions are inevitable. Under abnormal service conditions, the equipment is impacted, the possibility of overturning and slipping is increased, and electrical devices in the equipment can also fail.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a not only have good vibration control performance, still have good shock resistance's ultralow frequency angle vibration control system.
The utility model provides a very low frequency angle vibration control system, including installation frame and upper cover plate, be connected with a plurality of wire rope vibration isolation units between upper cover plate and the installation frame, there is the interval of direction of height between the bottom plate of upper cover plate and installation frame, be fixed with a vertical anti dashing ware in each wire rope vibration isolation unit respectively, the inner chamber bight of installation frame is fixed respectively many to along vertical and horizontal gasbag anti dashing ware, the inner wall of installation frame is fixed with the polylith permanent magnet, the same permanent magnet is also fixed to the lower surface of upper cover plate, when the upper cover plate is fixed in the installation frame top, form between upper cover plate and the installation frame many to parallel just right permanent magnet group.
In an embodiment of the above technical solution, the mounting frame is a rectangular frame with an upper opening, and two of the airbag impact dampers are respectively and vertically fixed at two ends of the inner wall of each side plate. .
In an embodiment of the above technical scheme, the steel wire rope vibration isolation unit includes an upper mounting plate, a lower mounting plate and a steel wire rope, the upper mounting plate and the lower mounting plate are round plates with the same structure, the steel wire rope has even number and is arranged in a group of cross way by two, the upper ends and the lower ends of the two steel wire ropes are respectively and symmetrically fixed on the upper mounting plate and the lower mounting plate, the multiple groups of steel wire ropes are uniformly distributed along the periphery of the upper mounting plate and the lower mounting plate, and the distance from the upper surface of the upper mounting plate to the lower surface of the lower mounting plate is greater than the height of the inner cavity of the mounting frame.
In an embodiment of the above technical solution, the upper mounting plate and the lower mounting plate are symmetrically fixed to the lower surface of the upper cover plate and the upper surface of the mounting frame bottom plate, so that a space is formed between the upper edges of the upper cover plate and the mounting frame.
In an embodiment of the above technical scheme, the upper mounting plate and the lower mounting plate are provided with a circle of threaded holes, and the upper mounting plate and the lower mounting plate are fixed with the bottom plates of the upper cover plate and the mounting frame through screws respectively.
In one embodiment of the above technical solution, the vertical impact resistant device includes a lower connecting rod, a limiting buckle, a lower impact resistant block, an upper impact resistant block and an upper connecting rod; the limiting buckle comprises a cylindrical shell and sealing plates at two ends of the cylindrical shell, and the lower end of the upper connecting rod is connected with a disc with the diameter smaller than the inner diameter of the cylindrical shell; the cylindrical shell is provided with an axial through groove convenient for installing an upper connecting rod and a disc integral piece, the upper end sealing plate is provided with an upper connecting rod installing groove, and the groove comprises a central circular hole and a radial groove, wherein one side of the radial groove is communicated with the central plane of the cylindrical shell in the width direction of the axial through groove; the lower anti-impact block and the upper anti-impact block are respectively fluidized on the bottom surface and the top surface of the inner cavity of the limiting buckle, and the upper anti-impact block is provided with an upper connecting rod mounting groove corresponding to the upper end sealing plate; the lower connecting rod is vertically connected to the center of the lower end sealing plate of the cylindrical shell; when the upper connecting rod and the disc integral piece are installed, the upper connecting rod penetrates through a round hole in the center of the upper end sealing plate, and the disc is located below the upper impact-resistant plate.
In an embodiment of the above technical scheme, the central positions of the lower mounting plate and the upper mounting plate are respectively fixed with an internal thread sleeve, the end portions of the lower connecting rod and the upper connecting rod are respectively provided with an external thread, and the end portions of the lower connecting rod and the upper connecting rod are respectively connected in the internal thread sleeve.
In an embodiment of the above technical solution, the upper cover plate includes a cover plate and a side plate frame on a lower surface of the cover plate, a peripheral dimension of the side plate frame is smaller than a square region defined by inner ends of the impact dampers of the airbag, and a planar dimension of the cover plate is the same as an outer dimension of the mounting frame.
In an embodiment of the foregoing technical solution, the eight permanent magnets are rectangular, four of the eight permanent magnets are respectively fixed at the middle positions of the inner walls of the four side plates of the installation frame, each permanent magnet is respectively fixed along the length direction of the corresponding side plate, and the other four permanent magnets are respectively fixed at the middle positions of the outer walls of each side plate of the side plate frame.
The utility model provides a method for vibration control of the above system, the upper cover plate of the system is connected with the precision instrument equipment to be protected, the mounting frame is connected with the carrying equipment main body, and the steel wire rope vibration isolation unit between the upper cover plate and the mounting frame can provide positive rigidity in six freedom directions; when the amplitude values of the vertical vibration, the rolling angle vibration and the pitching angle vibration of the system are larger than a design critical value, a vertical shock absorber in the steel wire rope vibration isolation unit plays a role in limiting and resisting shock; when the amplitude of longitudinal vibration, transverse vibration and attitude angle vibration generated by the system is overlarge, the upper cover plate is in contact with the anti-impact device of the air bag, so that the limiting and anti-impact functions are achieved; when the upper cover plate and the mounting frame move relatively, a plurality of pairs of permanent magnets repel each other, negative rigidity is provided in a plurality of directions, positive rigidity provided by the steel wire rope vibration isolation unit is offset, low rigidity and even zero rigidity are realized, and ultralow-frequency angular vibration control is realized.
The utility model discloses connect a plurality of wire rope vibration isolation units between installation frame and upper cover plate, can provide positive rigidity in six degrees of freedom directions, connect vertical anti dashing ware in each wire rope vibration isolation unit, realize vibration isolation and anti integration of dashing. When the amplitude values of the vertical vibration, the rolling angle vibration and the pitching angle vibration of the system are larger than the design critical value, the vertical shock absorber can play the roles of limiting and resisting shock. And a plurality of pairs of longitudinal and transverse air bag impact dampers are arranged at the corners of the inner cavity of the mounting frame, so that impact protection in the transverse direction, the longitudinal direction and the attitude angle direction is realized. When the amplitude of longitudinal vibration, transverse vibration and attitude angle vibration generated by the system is overlarge, the upper cover plate is in contact with the anti-impact device of the air bag, so that the limiting and anti-impact functions are achieved. The upper cover plate and the mounting frame are provided with a plurality of groups of permanent magnets which are opposite to each other and serve as negative stiffness mechanisms to offset the stiffness of the steel wire rope vibration isolation unit in six directions, so that the multidirectional low stiffness characteristic is realized, when the upper cover plate and the mounting frame move relatively, the opposite permanent magnets repel each other, the negative stiffness can be provided in the directions, the positive stiffness provided by the steel wire rope vibration isolation unit is offset, the low stiffness and even zero stiffness is realized, and the ultralow frequency angular vibration control is realized. In short, the system introduces a vertical shock resistant device into the steel wire rope vibration isolation unit to realize the integration of vibration isolation and shock resistance; a permanent magnet group is introduced between the upper cover plate and the mounting frame to provide negative rigidity to offset positive rigidity provided by the steel wire rope vibration isolation unit, so that the multi-direction low rigidity characteristic is realized; a plurality of pairs of airbag impact dampers are arranged between the upper cover plate and the mounting frame to realize impact protection in the transverse direction, the longitudinal direction and the attitude angle direction, so that the system has excellent vibration control performance and also has excellent impact resistance, and is particularly suitable for being mounted and applied in a laser defense weapon system and high-precision battle weapon transition equipment.
Drawings
Fig. 1 is a schematic external view of an embodiment of the present invention.
Fig. 2 is a schematic top view of fig. 1 with the upper cover removed.
Fig. 3 is a schematic axial view of the structure of fig. 2.
Fig. 4 is an enlarged assembly view of the wire rope vibration isolation unit and the vertical impact absorber of fig. 3.
FIG. 5 is an enlarged schematic view of the vertical impactor shown in FIG. 4.
Fig. 6 is a schematic axial side structure diagram of the upper cover plate.
Detailed Description
As can be seen from fig. 1 to 6, the ultralow frequency angular vibration control system disclosed in this embodiment includes an upper cover plate 1, a mounting frame 2, an airbag impact damper 3, a permanent magnet 4, a wire rope vibration isolation unit 5, and a vertical impact damper 6.
When the system is applied, the cover plate of the upper cover plate is connected with the precision instrument equipment to be protected, and the installation frame is connected with the equipment main body.
The mounting frame 2 is a rectangular parallelepiped frame including an upper opening.
Air bag impact preventers 3 are respectively and vertically fixed at two ends of the inner wall of each side plate of the mounting frame 2, and the upper edges of the air bag impact preventers 3 are lower than the top surface of the mounting frame 2.
The permanent magnets 4 are in a rectangular parallelepiped shape, eight permanent magnets are provided, four of the eight permanent magnets are respectively fixed at the middle positions of the inner walls of the four side plates of the mounting frame 2, and each permanent magnet is fixed along the length direction of the corresponding side plate.
Four steel wire rope vibration isolation units 5 are symmetrically fixed at two ends of the length direction between the mounting frame 2 and the upper cover plate 1.
The wire rope vibration isolating unit 5 includes an upper mounting plate 51, a lower mounting plate 52, and a plurality of wire ropes 53 connected therebetween. The upper mounting plate 51 and the lower mounting plate 52 have the same structure, and are embedded with an internal thread sleeve at the center position and provided with a circle of threaded holes at the outer side.
Even number of steel wire ropes 53 are arranged in a group of two steel wire ropes in a crossed manner, the upper ends and the lower ends of the two steel wire ropes are symmetrically fixed on the upper mounting plate 51 and the lower mounting plate 52 respectively, a plurality of groups of steel wire ropes 53 are uniformly distributed along the periphery of the upper mounting plate and the lower mounting plate, and the distance from the upper surface of the upper mounting plate 51 to the lower surface of the lower mounting plate 52 is greater than the height of an inner cavity of the mounting frame 2. The wire rope vibration isolating unit 5 can provide positive stiffness in six degrees of freedom directions.
A vertical shock absorber 6 is fixed between the upper mounting plate 51 and the lower mounting plate 52 of each steel wire rope vibration isolation unit 5.
The limit buckle 62 comprises a cylindrical shell and closing plates at two ends of the cylindrical shell, and a disc 66 with the diameter smaller than the inner diameter of the cylindrical shell is connected to the lower end of the upper connecting rod 65. An axial through groove convenient for mounting the integral piece of the upper connecting rod 65 and the disc 66 is formed in the cylindrical shell, an upper connecting rod mounting groove is formed in the upper end sealing plate and comprises a central circular hole and a radial groove, one side of the radial groove is communicated with the central plane of the cylindrical shell in the width direction of the axial through groove, the lower anti-impact block 63 and the upper anti-impact block 64 are both rubber blocks and are vulcanized on the bottom surface and the top surface of an inner cavity of the limiting buckle 62 respectively, an upper connecting rod mounting groove corresponding to the upper end sealing plate is formed in the upper anti-impact block 64, and the lower connecting rod 61 is vertically connected to the central position of the lower end sealing plate of the cylindrical shell; when the upper connecting rod 65 and the disc 66 are integrally installed, the upper connecting rod 65 penetrates through a round hole in the center of the upper end sealing plate, the disc 66 is located below the upper impact resistant block 64, and the upper connecting rod 61 can freely move within a certain range of the upper connecting rod installing groove.
When the vertical impact damper 6 and the steel wire rope vibration isolation unit 5 are assembled, the lower connecting rod 61 and the upper connecting rod 65 are respectively connected with the inner thread sleeves at the central positions of the lower mounting plate 52 and the upper mounting plate 51 through threads. After the vertical impact resistant device 6 and the steel wire rope vibration isolation unit 5 are assembled, the lower mounting plates of the assembly parts are respectively fixed on the bottom plate of the mounting frame 2 through screws.
When the vibration amplitude is smaller, the disc 66 at the lower end of the upper connecting rod 61 is not in contact with the upper and lower impact-resistant blocks of the limiting buckle 62 and freely moves along with the upper cover plate 1, and when the vibration amplitude is larger than a design threshold value, the disc 66 is in contact with the upper and lower impact-resistant blocks to play a limiting and impact-resistant role.
The upper cover plate 1 comprises a cover plate 11 and a side plate frame 12 on the lower surface of the cover plate, and a permanent magnet 4 is respectively fixed at the middle position of the outer side of each side plate of the side plate frame. The peripheral dimension of the side plate frame 12 is smaller than the square area enclosed by the inner end of the air bag impact preventer 3, and the plane dimension of the cover plate 11 is the same as the external dimension of the mounting frame 2. When the upper cover plate 1 and the fixed permanent magnets 4 are fixed on the upper mounting plates 51, the side plate frames are inserted into the mounting frame, the permanent magnets on the periphery of the side plate frames are respectively opposite to the permanent magnets on the inner walls of the side plates of the mounting frame in parallel, the mounting frame 2 is completely covered by the cover plate 11, rainwater and dust are prevented from entering the mounting frame, and the effect of protecting devices in the mounting frame is achieved.
Since the distance between the upper surface of the upper mounting plate 51 and the lower surface of the lower mounting plate 52 is greater than the height of the inner cavity of the mounting frame 2, there is a distance in the height direction between the upper cover plate 1 and the mounting frame 2 after being fixed, and under the action of external vibration excitation, relative motion can be generated between the upper cover plate 1 and the mounting frame 2, and the wire rope vibration isolation unit 5 provides multi-directional positive stiffness of the system.
When the amplitude of the transverse vibration, the longitudinal vibration and the attitude angle vibration is smaller than the design threshold value, the air bag impact preventer 3 is not in contact with the upper cover plate 1, and the air bag impact preventer 3 does not work; when the vibration amplitude exceeds the design threshold or the carrying equipment is subjected to impact load, the upper cover plate 1 is contacted with the air bag impact preventer 3 to play a role in limiting or resisting impact.
When the upper cover plate 1 and the installation frame 2 generate relative motion due to vibration, the four pairs of permanent magnets 4 between the upper cover plate 1 and the installation frame 2 are dislocated, negative rigidity along the vibration direction is generated, positive rigidity of the steel wire rope vibration isolation unit is offset, low rigidity and even zero rigidity are realized, and ultralow-frequency angular vibration control is realized.
The utility model discloses connect a plurality of wire rope vibration isolation units between installation frame and upper cover plate, can provide positive rigidity in six degrees of freedom directions, connect vertical anti dashing ware in each wire rope vibration isolation unit, realize vibration isolation and anti integration of dashing. When the amplitude values of the vertical vibration, the rolling angle vibration and the pitching angle vibration of the system are larger than the design critical value, the vertical shock absorber can play the roles of limiting and resisting shock. And a plurality of pairs of longitudinal and transverse air bag impact dampers are arranged at the corners of the inner cavity of the mounting frame, so that impact protection in the transverse direction, the longitudinal direction and the attitude angle direction is realized. When the amplitude of longitudinal vibration, transverse vibration and attitude angle vibration generated by the system is overlarge, the upper cover plate is in contact with the anti-impact device of the air bag, so that the limiting and anti-impact functions are achieved. The upper cover plate and the mounting frame are provided with a plurality of groups of permanent magnet groups which are opposite to each other and serve as negative stiffness mechanisms to offset the stiffness of the steel wire rope vibration isolation unit in six directions, so that the multidirectional low stiffness characteristic is realized, when the upper cover plate and the mounting frame move relatively, the opposite permanent magnets repel each other, the negative stiffness can be provided in the directions, the positive stiffness provided by the steel wire rope vibration isolation unit is offset, the low stiffness and even zero stiffness is realized, and the ultralow frequency angular vibration control is realized. In short, the system introduces a vertical shock resistant device into the steel wire rope vibration isolation unit to realize the integration of vibration isolation and shock resistance; a permanent magnet group is introduced between the upper cover plate and the mounting frame to provide negative rigidity to offset positive rigidity provided by the steel wire rope vibration isolation unit, so that the multi-direction low rigidity characteristic is realized; a plurality of pairs of airbag impact dampers are arranged between the upper cover plate and the mounting frame to realize impact protection in the transverse direction, the longitudinal direction and the attitude angle direction, so that the system has excellent vibration control performance and also has excellent impact resistance, and is particularly suitable for being mounted and applied in a laser defense weapon system and high-precision battle weapon transition equipment.
Claims (9)
1. An ultra-low frequency angular vibration control system, characterized by: this system includes installation frame and upper cover plate, be connected with a plurality of wire rope vibration isolation units between the bottom plate of upper cover plate and installation frame, there is the interval of direction of height between upper cover plate and the installation frame, be fixed with a vertical anti-impact device in each wire rope vibration isolation unit respectively, the inner chamber bight of installation frame is fixed respectively many to be along vertical and horizontal gasbag anti-impact device, the inner wall of installation frame is fixed with the polylith permanent magnet, the same permanent magnet is also fixed to the lower surface of upper cover plate, when the upper cover plate is fixed in the installation frame top, form many pairs of parallel just right permanent magnet group between upper cover plate and the installation frame.
2. The ultra low frequency angular vibration control system of claim 1, wherein: the mounting frame is a cuboid frame with an upper opening, and two air bag impact dampers are vertically fixed at two ends of the inner wall of each side plate respectively.
3. The ultra low frequency angular vibration control system of claim 2, wherein: the steel wire rope vibration isolation unit comprises an upper mounting plate, a lower mounting plate and a steel wire rope, the upper mounting plate and the lower mounting plate are round plates with the same structure, the steel wire rope is provided with an even number and is arranged in a group in a crossed mode, the upper end and the lower end of the two steel wire ropes are symmetrically fixed on the upper mounting plate and the lower mounting plate respectively, the steel wire ropes are uniformly distributed on the periphery of the upper mounting plate and the lower mounting plate along the periphery of the upper mounting plate and the lower mounting plate, and the distance between the upper surface of the upper mounting plate and the lower surface of the lower mounting plate is larger than the height of an inner cavity of the mounting frame.
4. The ultra low frequency angular vibration control system of claim 3, wherein: the upper mounting plate and the lower mounting plate are symmetrically fixed on the lower surface of the upper cover plate and the upper surface of the mounting frame bottom plate, so that a space is reserved between the upper edges of the upper cover plate and the mounting frame.
5. The ultra low frequency angular vibration control system of claim 4, wherein: go up the mounting panel and be provided with the round screw hole on the mounting panel down respectively, both are fixed through the bottom plate of screw with upper cover plate and installation frame respectively.
6. The ultra low frequency angular vibration control system of claim 5, wherein: the vertical impact resistant device comprises a lower connecting rod, a limiting buckle, a lower impact resistant block, an upper impact resistant block and an upper connecting rod; the limiting buckle comprises a cylindrical shell and sealing plates at two ends of the cylindrical shell, and the lower end of the upper connecting rod is connected with a disc with the diameter smaller than the inner diameter of the cylindrical shell; the cylindrical shell is provided with an axial through groove convenient for installing an upper connecting rod and a disc integral piece, the upper end sealing plate is provided with an upper connecting rod installing groove, and the groove comprises a central circular hole and a radial groove, wherein one side of the radial groove is communicated with the central plane of the cylindrical shell in the width direction of the axial through groove; the lower anti-impact block and the upper anti-impact block are respectively vulcanized on the bottom surface and the top surface of the inner cavity of the limiting buckle, and the upper anti-impact block is provided with an upper connecting rod mounting groove corresponding to the upper end sealing plate; the lower connecting rod is vertically connected to the center of the lower end sealing plate of the cylindrical shell; when the upper connecting rod and the disc integral piece are installed, the upper connecting rod penetrates through a round hole in the center of the upper end sealing plate, and the disc is located below the upper impact-resistant plate.
7. The ultra low frequency angular vibration control system of claim 6, wherein: the central point department of lower mounting panel and last mounting panel is fixed with the internal thread sleeve pipe respectively, and the tip of lower connecting rod and last connecting rod is provided with the external screw thread respectively, and the tip of both is connected respectively in the internal thread sleeve pipe.
8. The ultra low frequency angular vibration control system of claim 2, wherein: the upper cover plate comprises a cover plate and a side plate frame on the lower surface of the cover plate, the peripheral size of the side plate frame is smaller than a square area defined by the inner end of the air bag impact preventer, and the plane size of the cover plate is the same as the appearance size of the mounting frame.
9. The ultra low frequency angular vibration control system of claim 8, wherein: eight permanent magnets are arranged and are in a cuboid shape, four of the eight permanent magnets are respectively fixed at the middle positions of the inner walls of the four side plates of the installation frame, each permanent magnet is respectively fixed along the length direction of the corresponding side plate, and the other four permanent magnets are respectively fixed at the middle positions of the outer walls of the side plates of the side plate frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023066897.8U CN214093789U (en) | 2020-12-18 | 2020-12-18 | Ultralow frequency angular vibration control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023066897.8U CN214093789U (en) | 2020-12-18 | 2020-12-18 | Ultralow frequency angular vibration control system |
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| Publication Number | Publication Date |
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| CN214093789U true CN214093789U (en) | 2021-08-31 |
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| CN202023066897.8U Active CN214093789U (en) | 2020-12-18 | 2020-12-18 | Ultralow frequency angular vibration control system |
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| CN (1) | CN214093789U (en) |
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- 2020-12-18 CN CN202023066897.8U patent/CN214093789U/en active Active
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