CN112128307A - Shock-absorbing structure, inertia measuring device and movable platform - Google Patents
Shock-absorbing structure, inertia measuring device and movable platform Download PDFInfo
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- CN112128307A CN112128307A CN202011111528.8A CN202011111528A CN112128307A CN 112128307 A CN112128307 A CN 112128307A CN 202011111528 A CN202011111528 A CN 202011111528A CN 112128307 A CN112128307 A CN 112128307A
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- 238000013016 damping Methods 0.000 claims abstract description 129
- 230000000670 limiting effect Effects 0.000 claims abstract description 60
- 238000005259 measurement Methods 0.000 claims abstract description 26
- 230000035939 shock Effects 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims 3
- 230000000694 effects Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/16—Details concerning attachment of head-supporting legs, with or without actuation of locking members thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
- F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a damping structure, an inertia measuring device and a movable platform, wherein the damping structure comprises a base, a damping sleeve and a fixed block for bearing a load needing damping, the base is provided with a plurality of fixed columns arranged at intervals and a plurality of limiting parts in one-to-one correspondence with the fixed columns; the damping sleeve has elasticity and is used for deforming during vibration so as to slow down the vibration; the damping sleeves are arranged on the corresponding fixed columns in a sleeved mode and limited by limiting parts arranged at one ends, far away from the base, of the fixed columns; the fixing block is provided with a plurality of fixing parts arranged at intervals, the fixing parts correspond to the damping sleeves one by one, and the fixing parts are sleeved on the corresponding damping sleeves. According to the damping structure, the elasticity of the damping structure is increased by arranging the damping sleeve, so that resonance is avoided, and the problem of inaccurate measurement caused by the forward, backward, leftward and rightward movement of the inertia measurement unit can be avoided.
Description
Technical Field
The invention relates to the technical field of measurement, in particular to a damping structure, an inertia measurement device and a movable platform.
Background
In actual production life, a sensing device such as an inertia measurement unit is needed to measure the acceleration and the attitude angle of a movable platform such as an airplane, a train, a motor vehicle, an unmanned aerial vehicle, a robot and the like, when the movable platform moves, an external frequency is generated on the sensing device, the sensing device has a natural frequency, and when the external frequency is equal to the natural frequency, resonance is generated. The resonance may degrade the performance of the sensing device such that the sensing device may not accurately measure the acceleration and attitude angle of the movable platform. In order to avoid resonance, the sensing device can be provided with a damping piece, and the damping piece is soft to cause the sensing device to shake front and back and left and right, so that the sensing device cannot accurately measure the attitude angle of the movable platform.
Disclosure of Invention
In order to at least solve the problem of poor damping effect of an inertia measurement unit in the related art, the invention provides a damping structure, an inertia measurement device and a movable platform.
According to a first aspect of an embodiment of the present invention, the present invention provides a damping structure, including a base, on which a plurality of fixing columns are disposed at intervals, and a plurality of limiting members corresponding to the plurality of fixing columns one to one; the damping sleeve has elasticity and is used for deforming during vibration so as to slow down the vibration; the damping sleeves are arranged on the corresponding fixed columns in a sleeved mode and limited by limiting pieces arranged at one ends, far away from the base, of the fixed columns; the fixed block is used for bearing a load needing damping; the fixed block is provided with a plurality of fixed parts arranged at intervals, the fixed parts are in one-to-one correspondence with the damping sleeves, and the fixed parts are sleeved on the corresponding damping sleeves.
According to the damping structure provided by the embodiment of the invention, the elasticity of the damping structure is increased by arranging the elastic damping sleeve, so that resonance is avoided, the damping sleeve is sleeved on the corresponding fixing column, and the damping sleeve and the load are connected together through the fixing block, so that the fixing column can limit the damping sleeve, the load and the fixing block to move forwards, backwards, leftwards and rightwards.
In some embodiments, the damping sleeve is a hollow member.
In some embodiments, the wall thickness of the ends of the shock-absorbing sleeve is smaller than the wall thickness of the middle part of the shock-absorbing sleeve.
In some embodiments, the shock absorbing sleeve is spherical.
In some embodiments, the outer peripheral wall of the damping sleeve is provided with a limiting groove arranged along the circumferential direction of the damping sleeve; the fixing part is clamped in the limiting groove.
In some embodiments, the limiting groove is formed in the middle of the outer peripheral wall of the damping sleeve.
In some embodiments, the shock absorbing sleeves are provided with a plurality of groups with different specifications; each group of damping sleeves comprises damping sleeves the number of which is the same as that of the fixing columns; the multiple groups of damping sleeves are used for sleeving one group of damping sleeves on the fixing column of the base; wherein the specification includes at least one of: the size of the damping sleeve, the wall thickness of the damping sleeve and the material of the damping sleeve.
In some embodiments, the outer peripheral wall of the damping sleeve is provided with a limiting groove arranged along the circumferential direction of the damping sleeve, and the fixing part is clamped in the limiting groove.
In some embodiments, the shock absorbing structure further comprises a weight block, and the weight block and the load mounting surface of the fixing block are oppositely arranged.
In some embodiments, the load mounting surface of the mounting block faces away from the base.
In some embodiments, the load mounting surface of the fixing block is provided with a mounting column, and the mounting column is used for sleeving a load; the balancing weight is connected with the mounting column of the fixing block through a second fastener so as to fix a load between the balancing weight and the fixing block.
In some embodiments, the mounting post comprises a bottom limiting post arranged on the fixing block and a sleeving post connected with the bottom limiting post; the sleeving column is used for sleeving a load; the outer diameter of the bottom limiting column is larger than that of the sleeving column, and one end, connected with the sleeving column, of the bottom limiting column is used for bearing a load sleeved on the periphery of the sleeving column.
In some embodiments, a top limiting column is arranged on one surface of the balancing weight facing the load mounting surface of the fixing block, the top limiting column is provided with a limiting mounting hole which is axially arranged along the top limiting column and penetrates through the balancing weight, and the top limiting column is sleeved on a part, extending out of the load, of the sleeved column sleeved with the load through the limiting mounting hole; the second fastener is connected in the limiting mounting hole and the mounting column.
In some embodiments, a through hole is formed in a portion of the fixing block located between the fixing portions.
According to a second aspect of the embodiments of the present invention, there is provided an inertial measurement unit including the inertial measurement unit mounted on the fixed block and the shock-absorbing structure as described above.
According to a third aspect of embodiments of the present invention, there is also provided a movable platform comprising an inertial measurement unit as described above.
Through any one of the technical schemes, the embodiment of the invention can at least produce the following beneficial technical effects:
according to the damping structure provided by the embodiment of the invention, the elasticity of the damping structure is increased by arranging the elastic damping sleeve, so that resonance is avoided, the damping sleeve is sleeved on the corresponding fixing column, and the damping sleeve and the load are connected together through the fixing block, so that the fixing column can limit the damping sleeve, the load and the fixing block to move forwards, backwards, leftwards and rightwards, and the stability of load operation is further improved.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is an exploded view of a shock-absorbing structure according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a shock-absorbing structure according to an embodiment of the present invention;
FIG. 3 is a structural schematic view of another angle of a shock-absorbing structure according to an embodiment of the present invention;
fig. 4 is a structural view illustrating still another angle of a shock-absorbing structure according to an embodiment of the present invention.
Reference numerals:
the inertial measurement unit 1000, the shock absorbing structure 100,
a base 110, a fixed column 111, a fixed segment 1111, a sliding segment 1112, a limiting piece 112,
the shock-absorbing housing 120, the spacing groove 121,
a fixing block 130, a fixing part 131, a mounting post 132, a bottom limiting post 1321, a sleeving post 1322, a through hole 133,
the inertia measurement unit 140, the mounting hole 141, the counterweight 160, the top limit column 161, the limit mounting hole 1611, the second fastener 170 and the first fastener 180.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The shock-absorbing structure 100, the inertial measurement unit 1000, and the movable platform according to the embodiment of the present invention are described below with reference to fig. 1 to 4.
As shown in fig. 1 to 4, a shock-absorbing structure 100 according to an embodiment of the present invention includes a base 110, a shock-absorbing sleeve 120, and a fixing block 130 for bearing a load to be damped, which may be, but is not limited to, an inertia measuring unit 140 described below. Wherein, shock attenuation cover 120 has elasticity for take place deformation in order to slow down the vibrations effect when vibrations, through changing different elastic shock attenuation cover 120, can change shock-absorbing structure 100's natural frequency, from this, can avoid natural frequency and external frequency to equal, and then can avoid resonant emergence. In addition, the damping sleeve 120 can also be used to buffer the vibration of the load, thereby playing a role in damping the load.
Specifically, as shown in fig. 1 to 4, the base 110 is provided with a plurality of fixing posts 111 arranged at intervals, and a plurality of position-limiting members 112 corresponding to the plurality of fixing posts 111 one by one. The damping sleeves 120 are arranged in a plurality, the damping sleeves 120 correspond to the fixing columns 111 one by one, the damping sleeves 120 are sleeved on the corresponding fixing columns 111 and limited by limiting parts 112 installed at one ends, far away from the base 110, of the fixing columns 111, the damping sleeves 120 can be limited by the fixing columns 111 to move forwards, backwards, leftwards and rightwards (forwards, backwards, leftwards and rightwards as shown in fig. 1), the limiting parts 112 can limit the damping sleeves 120 to move upwards (upwards as shown in fig. 1), and the base 110 can provide an installation environment for the fixing columns 111, the limiting parts 112 and the damping sleeves 120 and can limit the damping sleeves 120 to move downwards (downwards as shown in fig. 1).
Referring to fig. 1 to 4, the fixing block 130 is provided with a plurality of fixing portions 131 arranged at intervals, the plurality of fixing portions 131 correspond to the plurality of damping sleeves 120 one by one, and the fixing portions 131 are sleeved on the corresponding damping sleeves 120, so that the damping sleeves 120 are reliably mounted on the fixing block 130. It can be appreciated that the damping sleeve 120 and the load are securely coupled together by the fixing block 130 such that the fixing post 111 can restrict the damping sleeve 120, the load and the fixing block 130 from moving forward, backward, leftward and rightward (forward, backward, leftward and rightward as shown in fig. 1).
According to the damping structure 100 of the embodiment of the invention, the elasticity of the damping structure 100 is increased by arranging the damping sleeve 120, so that resonance is avoided, the damping sleeve 120 is sleeved on the corresponding fixing column 111, and the damping sleeve 120 and the load are connected together through the fixing block 130, so that the fixing column 111 can limit the movement of the damping sleeve 120, the load and the fixing block 130 in front, back, left and right directions (front, back, left and right directions as shown in fig. 1).
Further, with reference to fig. 1 to 4, the damping sleeve 120 may be slidably sleeved on the corresponding fixing post 111, the limiting member 112 may limit a maximum position of the damping sleeve 120 moving upward (upward as shown in fig. 1), and the base 110 may limit a maximum position of the damping sleeve 120 moving downward (downward as shown in fig. 1), when a shock is generated, the damping sleeve 120 may slide on the fixing post 111 to convert kinetic energy of the shock into heat energy to be consumed, so that a good damping effect may be achieved.
Referring to fig. 1 to 4, according to some embodiments of the present invention, the damping sleeve 120 may be a hollow member, during manufacturing, the hollow member is convenient to manufacture the damping sleeve 120 with different wall thicknesses, the damping sleeve 120 with different wall thicknesses has different elastic coefficients, the elasticity of the damping structure 100 may be changed by replacing the damping sleeve 120 with different wall thicknesses, and in practical applications, the elasticity of the damping structure 100 may be adjusted by replacing the damping sleeve 120 with different wall thicknesses, so as to change the natural frequency of the damping structure 100, thereby avoiding the natural frequency being equal to an external frequency, and further avoiding the occurrence of resonance.
In some embodiments of the present invention, the wall thickness of the damping sleeve 120 at both ends is smaller than the wall thickness of the damping sleeve 120 at the middle portion, and both ends of the damping sleeve 120 may refer to both ends of the damping sleeve 120 contacting the base 110 and the limiting member 112. Set up to thick through the middle part with shock attenuation cover 120, both ends set up to thinner, can strengthen shock attenuation cover 120 middle part rigidity improve the elasticity degree at shock attenuation cover 120 both ends simultaneously, thereby, utilize the thick middle part of shock attenuation cover 120 can avoid the load to take place to rock or discover great rocking in the direction about (all around as shown in fig. 1) in the front and back, be favorable to further avoiding causing the load to take place to rock because of shock attenuation cover 120 is too big in the deformation of direction about the front and back, and the phenomenon that influences load job stabilization nature takes place. Moreover, the thinner two ends of the damping sleeve 120 can ensure the performance of elastic deformation of the damping sleeve 120 in the up-down direction shown in fig. 1, thereby ensuring the damping effect of the load.
According to some embodiments of the present invention, as shown in fig. 1 to 4, the damping sleeve 120 may be spherical, and the hardness of the damping sleeve 120 can be adjusted more conveniently by the spherical damping sleeve 120, so that the vibrations in three directions have different responses, and thus more damping requirements can be satisfied.
In some embodiments of the present invention, as shown in fig. 1 to 4, the outer circumferential wall of the shock-absorbing sleeve 120 is provided with a limiting groove 121 disposed along the circumferential direction of the shock-absorbing sleeve 120, and the fixing portion 131 is engaged in the limiting groove 121, so that the shock-absorbing sleeve 120 and the fixing block 130 are reliably connected together by the engagement of the limiting groove 121 and the fixing portion 131.
With reference to fig. 1 to 4, according to some embodiments of the present invention, the limiting groove 121 is formed in the middle of the outer circumferential wall of the damping sleeve 120, so that the fixing block 130 can be sleeved on the middle of the damping sleeve 120, and further, the damping sleeve 120 is symmetrical on the upper and lower (upper and lower as shown in fig. 1) sides of the fixing block 130, thereby achieving a better damping effect. Further, the axis of the damping sleeve 120 coincides with the axis of the fixing post 111. Thus, the damping sleeves 120 are symmetrical around the fixing post 111 (around the front, back, left, and right as shown in fig. 1), and the damping effect can be further enhanced.
Referring to fig. 1-4, according to some embodiments of the present invention, the shock-absorbing housing 120 is provided with a plurality of sets of different specifications; each group of damping sleeves 120 comprises damping sleeves 120 the number of which is the same as that of the fixing columns 111; the multiple sets of damping sleeves 120 are used for sleeving one set on the fixing column 111 of the base 110; wherein the specification includes at least one of: the size of the shock-absorbing sleeve 120, the wall thickness of the shock-absorbing sleeve 120, and the material of the shock-absorbing sleeve 120. The shock-absorbing sleeve 120 elasticity coefficient of different wall thickness, size, material is different, can change shock-absorbing structure 100's elasticity through the shock-absorbing sleeve 120 of changing different specifications, and in practical application, can adjust shock-absorbing structure 100's elasticity through the shock-absorbing sleeve 120 of changing different specifications to change shock-absorbing structure 100's natural frequency, from this, can avoid natural frequency and external frequency to equal, and then can avoid resonant emergence.
In some embodiments of the present invention, as shown in fig. 1-4, the fixed post 111 may include a fixed segment 1111 and a sliding segment 1112, and one end of the fixed segment 1111 is connected to the base 110. One end of the sliding segment 1112 is detachably connected to one end of the fixed segment 1111, the limiting member 112 is disposed at the other end of the sliding segment 1112, and the damping sleeve 120 is slidably disposed on the sliding segment 1112. It can be understood that the sliding section 1112 can connect the damping sleeve 120 to the fixed section 1111, and since the damping sleeve 120 may wear the sliding section 1112 after sliding on the sliding section 1112 for a long time, the sliding section 1112 and the fixed section 1111 can be detachably connected, so that the replacement of the sliding section 1112 can be facilitated, and meanwhile, only local parts need to be replaced, the whole damping structure 100 does not need to be replaced, which is beneficial to reducing the subsequent cost for maintaining the damping structure 100.
As shown in fig. 1-4, according to some embodiments of the present invention, one of the fixed section 1111 and the sliding section 1112 is provided with a positioning pillar, and the other of the fixed section 1111 and the sliding section 1112 is provided with a positioning hole for matching with the positioning pillar. The positioning columns and the positioning holes can limit the fixed section 1111 and the sliding section 1112, so that the fixed section 1111 and the sliding section 1112 can be reliably installed together.
In some embodiments of the present invention, as shown in fig. 1 to 4, the damping structure 100 may further include a weight block 160, and the weight block 160 and the load mounting surface of the fixing block 130 are oppositely disposed, so that the load may be clamped between the weight block 160 and the fixing block 130, so that the load may be more stably and reliably mounted. It should be noted that the shock absorbing structure 100 itself has a natural frequency, and the natural frequency is related to the weight and elasticity of the shock absorbing structure 100 itself, and the weight of the shock absorbing structure 100 can be changed by installing the weight blocks 160 with different weights on the shock absorbing structure 100, so as to change the natural frequency of the shock absorbing structure 100, and therefore, the resonance phenomenon of the shock absorbing structure 100 can be better avoided.
Referring to fig. 1 to 4, in some embodiments of the present invention, the weight block 160, the load and the fixing block 130 are connected by the second fastening member 170, and thus, the weight block 160, the load and the fixing block 130 are reliably connected together, so that the position of the center of gravity of the shock absorbing structure 100 can be kept constant, the phenomenon of center of gravity shift due to unstable connection is avoided, the natural frequency of the shock absorbing structure 100 can be better ensured to be in a stable state, or the natural frequency of the shock absorbing structure 100 can be better changed by replacing weight blocks 160 with different weights.
In some embodiments of the present invention, as shown in fig. 1, the load mounting surface of the fixing block 130 faces away from the base 110, thereby providing sufficient mounting space for the load and, at the same time, making the shock-absorbing structure 100 compact.
As shown in fig. 1, according to some embodiments of the present invention, the load mounting surface of the fixing block 130 is provided with a mounting post 132, the mounting post 132 is used for a load to be sleeved, and the mounting post 132 can position the load, so that the load can be reliably mounted on the mounting post 132, and the load is prevented from shaking. The weight block 160 is coupled with the mounting post 132 of the fixing block 130 by the second fastener 170 to fix the load between the weight block 160 and the fixing block 130, whereby the second fastener 170 securely couples the weight block 160, the load and the fixing block 130 together.
Alternatively, as shown in fig. 1, there may be a plurality of mounting posts 132, and there may also be a plurality of second fasteners 170, with the plurality of second fasteners 170 corresponding to the plurality of mounting posts 132 one-to-one. For example, in the example shown in fig. 1, the fixing block 130 may be formed in a substantially square shape, the mounting posts 132 may be provided in four numbers, and the four mounting posts 132 are respectively provided at positions of four corners of the fixing block 130, and accordingly, the load may be formed in a substantially square shape, and the four corners of the load are provided with mounting holes 141 corresponding to the mounting posts 132.
According to some embodiments of the present invention, as shown in fig. 1, the mounting post 132 includes a bottom limiting post 1321 disposed on the fixing block 130 and a sleeved post 1322 connected to the bottom limiting post 1321, the sleeved post 1322 is used for a load to be sleeved, an outer diameter of the bottom limiting post 1321 is greater than an outer diameter of the sleeved post 1322, an end of the bottom limiting post 1321 connected to the sleeved post 1322 is used for receiving a load sleeved on an outer periphery of the sleeved post 1322, and the load is respectively sleeved on an outer periphery of the sleeved post 1322 in the corresponding mounting post 132 through the mounting hole 141 thereof, so as to mount the load on the fixing block 130 and be supported by the bottom limiting post 1321.
According to some embodiments of the present invention, as shown in fig. 1, in order to achieve more stable installation of a load between the counterweight block 160 and the fixed block 130, a top limiting column 161 is disposed on a surface of the counterweight block 160 facing a load installation surface of the fixed block 130, the top limiting column 161 is provided with a limiting installation hole 1611 axially disposed along the top limiting column and penetrating through the counterweight block 160, and the top limiting column 161 is sleeved on a portion of the sleeved column 1322 sleeved with the load, where the load protrudes from the portion; the second fastening member 170 is connected to the position-limiting mounting hole 1611 and the mounting post 132, as an implementation manner, a connecting hole may be formed on the mounting post 132, and the second fastening member 170 is inserted into the position-limiting mounting hole 1611 and the connecting hole to connect the fixing block 130 and the weight 160. Thereby, the stability of the load installation can be improved by limiting the load using the top and bottom limiting columns 161 and 1321.
According to some embodiments of the present invention, as shown in fig. 1, a through hole 133 is opened at a portion of the fixing block 130 between the fixing portions 131. It can be understood that the shock-absorbing structure 100 itself has a natural frequency, the natural frequency is related to the weight and elasticity of the shock-absorbing structure 100 itself, and the size of the through hole 133 can change the weight of the shock-absorbing structure 100, thereby changing the natural frequency of the shock-absorbing structure 100, and thus, the resonance of the shock-absorbing structure 100 can be avoided; in addition, heat dissipation of the load may also be facilitated.
Referring to fig. 1 to 4, in some embodiments of the present invention, the position-limiting member 112 may be a spacer, and the spacer is fixed on the fixing post 111 by a first fastening member 180. It can be understood that the gasket has the advantages of easy availability and low cost, and the use of the gasket as the limiting member 112 not only can provide a good limiting effect for the damping sleeve 120, but also can reduce the cost of the damping structure 100.
Of course, the limiting member 112 is not limited to the above structure, for example, the limiting member 112 may also be a protrusion protruding along the outer periphery of one end of the sliding segment 1112 far from the fixed segment 1111. The embodiment of the present invention does not limit this, as long as the limiting member 112 can achieve the limiting function mentioned in the embodiment of the present invention.
It should be noted that the technical features in the above embodiments of the present invention may be combined with each other to solve the corresponding technical problems, as long as there is no contradiction between the combinations of the technical features.
In addition, as shown in fig. 1 to 4, an inertial measurement unit 1000 is further provided in an embodiment of the present invention, where the inertial measurement unit 1000 includes an inertial measurement unit 140 and the damping structure 100 in any of the embodiments, the inertial measurement unit 140 may be the above-mentioned load, and the inertial measurement unit 140 is mounted on the fixed block 130.
In addition, the embodiment of the present invention further provides a movable platform, which includes the inertial measurement unit 1000 and the machine body as described above. The inertial measurement unit 1000 may be connected to the body to measure the acceleration and attitude angle of the movable platform, and specifically, the inertial measurement unit 140 may measure the acceleration and attitude angle of the movable platform, wherein the movable platform may be, but is not limited to: airplanes, trains, motor vehicles, unmanned aerial vehicles, robots, etc. It should be noted that when the movable platform moves, an external frequency is generated to the damping structure 100, the damping structure 100 itself has a natural frequency, and when the external frequency is equal to the natural frequency, resonance occurs, and the resonance may destroy the accuracy of detection by the inertia measurement unit 140.
Through the technical scheme recorded in any embodiment, the embodiment of the invention can at least produce the following beneficial technical effects:
the elasticity of the shock-absorbing structure 100 is increased by providing the shock-absorbing sleeve 120, thereby avoiding resonance; the damping sleeve 120 is sleeved on the corresponding fixing column 111, and the damping sleeve 120 and the load are connected together through the fixing block 130, so that the fixing column 111 can limit the damping sleeve 120, the load and the fixing block 130 to move forwards, backwards, leftwards and rightwards (forwards, backwards, leftwards and rightwards as shown in fig. 1), and the stability of load work is further improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (16)
1. A shock-absorbing structure, comprising:
the base is provided with a plurality of fixed columns arranged at intervals and a plurality of limiting parts in one-to-one correspondence with the fixed columns;
the damping sleeve has elasticity and is used for deforming during vibration so as to slow down the vibration; the damping sleeves are arranged on the corresponding fixed columns in a sleeved mode and limited by limiting pieces arranged at one ends, far away from the base, of the fixed columns;
the fixed block is used for bearing a load needing damping; the fixed block is provided with a plurality of fixed parts arranged at intervals, the fixed parts are in one-to-one correspondence with the damping sleeves, and the fixed parts are sleeved on the corresponding damping sleeves.
2. The structure of claim 1, wherein the damping sleeve is a hollow member.
3. The structure of claim 2, wherein the wall thickness of the ends of the sleeve is less than the wall thickness of the middle portion of the sleeve.
4. The structure according to claim 2, wherein the shock-absorbing shell is spherical.
5. The shock absorption structure as set forth in claim 4, wherein the outer peripheral wall of the shock absorption sleeve is provided with a limit groove arranged along the circumferential direction of the shock absorption sleeve; the fixing part is clamped in the limiting groove.
6. The structure of claim 5, wherein the limiting groove is formed in the middle of the outer peripheral wall of the damping sleeve.
7. The shock-absorbing structure according to any one of claims 2 to 6, wherein the shock-absorbing shell is provided with a plurality of groups of different specifications; each group of damping sleeves comprises damping sleeves the number of which is the same as that of the fixing columns; the multiple groups of damping sleeves are used for sleeving one group of damping sleeves on the fixing column of the base; wherein the specification includes at least one of: the size of the damping sleeve, the wall thickness of the damping sleeve and the material of the damping sleeve.
8. The shock-absorbing structure of claim 1, wherein the outer peripheral wall of the shock-absorbing sleeve is provided with a limiting groove arranged along the circumferential direction of the shock-absorbing sleeve, and the fixing portion is clamped in the limiting groove.
9. The shock absorbing structure of claim 1, further comprising a weight disposed opposite a load mounting surface of said fixed block.
10. The shock absorbing structure of claim 9, wherein the load mounting surface of the mounting block faces away from the base.
11. The shock-absorbing structure of claim 10, wherein the load mounting surface of the fixing block is provided with a mounting post for a load to be sleeved; the balancing weight is connected with the mounting column of the fixing block through a second fastener so as to fix a load between the balancing weight and the fixing block.
12. The shock-absorbing structure of claim 11, wherein the mounting posts comprise bottom-limiting posts disposed on the fixing block and nesting posts connected with the bottom-limiting posts; the sleeving column is used for sleeving a load; the outer diameter of the bottom limiting column is larger than that of the sleeving column, and one end, connected with the sleeving column, of the bottom limiting column is used for bearing a load sleeved on the periphery of the sleeving column.
13. The shock-absorbing structure according to claim 12, wherein a top limit post is provided on a surface of the weight block facing the load mounting surface of the fixed block, the top limit post is provided with a limit mounting hole axially disposed along the top limit post and penetrating through the weight block, and the top limit post is sleeved on a portion of the sleeved post sleeved with the load, which extends out of the load, through the limit mounting hole; the second fastener is connected in the limiting mounting hole and the mounting column.
14. The shock-absorbing structure according to claim 1, wherein a portion of the fixing block between the plurality of fixing portions is provided with a through hole.
15. An inertial measurement unit comprising an inertial measurement unit and the shock-absorbing structure of any one of claims 1 to 14, the inertial measurement unit being mounted on the fixed block.
16. A movable platform comprising the inertial measurement unit of claim 15.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011111528.8A CN112128307A (en) | 2020-10-16 | 2020-10-16 | Shock-absorbing structure, inertia measuring device and movable platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011111528.8A CN112128307A (en) | 2020-10-16 | 2020-10-16 | Shock-absorbing structure, inertia measuring device and movable platform |
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| CN112128307A true CN112128307A (en) | 2020-12-25 |
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| CN202011111528.8A Pending CN112128307A (en) | 2020-10-16 | 2020-10-16 | Shock-absorbing structure, inertia measuring device and movable platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112964253A (en) * | 2021-05-18 | 2021-06-15 | 北京三快在线科技有限公司 | Vibration reduction mechanism of inertia measurement assembly, flight control inertia measurement assembly and aircraft |
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