CN213451482U - Shock-absorbing structure, inertia measuring device and movable platform - Google Patents

Abstract

The utility model discloses a damping structure, an inertia measuring device and a movable platform, wherein the damping structure comprises a base, a plurality of damping sleeves 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 locating parts in one-to-one correspondence with the fixed columns; the damping sleeves are in one-to-one correspondence with the fixing columns, can be sleeved on the corresponding fixing columns in a sliding mode and are limited by limiting pieces arranged at one ends, far away from the base, of the fixing 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. The utility model discloses a shock-absorbing structure can avoid because the unsafe problem of measurement that the load front and back left and right sides motion leads to. Moreover, the shock absorption sleeve slides on the fixed column to convert the kinetic energy of the vibration into heat energy to be consumed, and a good shock absorption effect is achieved.

Description

Shock-absorbing structure, inertia measuring device and movable platform

Technical Field

The utility model belongs to the technical field of measure the technique and specifically relates to a shock-absorbing structure, inertia measuring device and movable platform are related to.

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 and filter low-frequency noise, the sensing device can be provided with the damping piece, but the damping piece is made to be soft, so that the sensing device shakes front and back and left and right, and the sensing device cannot accurately measure the attitude angle of the measured object.

SUMMERY OF THE UTILITY MODEL

For solving the poor problem of inertia measuring unit shock attenuation effect among the correlation technique at least, the utility model provides a shock-absorbing structure, inertia measuring device and movable platform, shock-absorbing structure has at least and measures accurate, the effectual advantage of shock attenuation.

According to a first aspect of the embodiments of the present invention, the present invention provides a damping structure, which includes a base, a damping sleeve and a fixing block for bearing a load to be damped, wherein the base is provided with a plurality of fixing columns arranged at intervals and a plurality of locating parts in one-to-one correspondence with the plurality of fixing columns; the damping sleeves are sleeved on the corresponding fixed columns in a sliding manner and limited by limiting parts arranged at one ends of the fixed columns far away from the base; 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 utility model discloses shock-absorbing structure establishes on corresponding fixed column through establishing damping sleeve slidable ground, and links together damping sleeve and load through the fixed block for the fixed column can restrict damping sleeve, load and fixed block side-to-side movement all around, from this, can avoid because the inaccurate problem of measured object attitude angle measurement that the load side-to-side movement leads to. Moreover, when vibrations produced, the shock attenuation cover slides on the fixed column and can turn into the kinetic energy of vibrations and lose heat energy, can play fine shock attenuation effect from this.

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 shock absorbing member; the load mounting surface of the fixed block faces the base; the shock absorbing member is disposed between the load mounting surface and the base.

In some embodiments, the shock absorbing member is plate-shaped, and a through groove is formed in the middle of the shock absorbing member; the through groove is opposite to the load mounting surface.

In some embodiments, a surface of the base facing the shock absorbing member is provided with a mounting groove, and the shock absorbing member is partially embedded in the mounting 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, a mounting column is arranged on one surface of the counterweight block facing the load mounting surface, and the mounting column is used for sleeving a load; the fixed block passes through the second fastener with the erection column of balancing weight is connected to the fixed position with the load between the balancing weight.

In some embodiments, the mounting post comprises a bottom limiting post arranged on the balancing weight 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, at least one of the two axial ends of the shock sleeve is provided with a reinforcement.

In some embodiments, the reinforcement is provided in plurality; a plurality of stiffeners are arranged along the circumferential direction of the damping sleeve at intervals, and each stiffener extends along the radial direction of the damping sleeve.

In some embodiments, the fixing posts comprise: the fixed section, one end of the said fixed section is connected with said base; the sliding section, the one end of sliding section with the other end detachable connection of canned paragraph, the locating part is established the other end of sliding section, establish shock attenuation cover slidable on the sliding section.

In some embodiments, one of the fixed section and the sliding section is provided with a positioning column, and the other of the fixed section and the sliding section is provided with a positioning hole matched with the positioning column; the fixed section and the sliding section are detachably connected through the matching of the positioning columns and the positioning holes.

According to the utility model discloses in the second aspect of the embodiment, the utility model provides an inertia measuring device, including inertia measuring unit and as above shock-absorbing structure, inertia measuring unit install in on the fixed block.

According to the third aspect of the embodiment of the utility model, the utility model discloses still provide a movable platform, include as above inertia measuring device.

Through any one of the above technical scheme, the embodiment of the utility model provides a can produce following beneficial technological effect at least:

establish on corresponding fixed column through establishing damping sleeve slidable ground, the fixed block passes through the fixed part cover and establishes on the damping sleeve, and will need carry out absorbing load and install in the fixed block, can be so that the vibrations that the load received transmit each damping sleeve through the fixed block, each damping sleeve receives after the vibrations effort, can slide and take place the friction with the fixed column along the fixed column, thereby convert the vibrations energy into comparatively mild motion and/or the heat energy that produces because of the friction in the motion process, and then can reach fine shock attenuation effect, in order to avoid vibrations to produce the influence to the work of load, be favorable to improving load job stability and precision. In addition, as can be seen from the above, since each damping sleeve only slides along the corresponding fixed column at most when vibration occurs, the fixed block sleeved on each damping sleeve can only move along the direction limited by the fixed column along with the damping sleeve, in short, the damping sleeve, the load and the fixed block can be limited to move in the front-back direction and the left-right direction by the fixed column through the related structure arrangement, and further, the problems of inaccurate final measurement result, unstable working state and the like caused by the movement of the load in the front-back direction and/or the left-right direction can be solved.

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 schematic view of another angle of the shock-absorbing structure according to the embodiment of the present invention;

fig. 4 is a schematic structural view of 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, a mounting groove 113,

a shock-absorbing sleeve 120, a limiting groove 121, a reinforcing piece 122, a through groove 123,

a fixing block 130, a fixing portion 131, a connecting hole 132, a top stopper post 133,

the inertia measurement unit 140, the mounting hole 141,

the shock-absorbing members 150 are provided with,

a counterweight block 160, a mounting column 161, a bottom limiting column 1611, a sleeving column 1612,

a second fastener 170, a 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 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 drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

A shock-absorbing structure 100, an inertial measurement unit 1000, and a movable platform according to an embodiment of the present invention are described below with reference to fig. 1 to 4.

As shown in fig. 1 to 4, a damping structure 100 according to an embodiment of the present invention includes a base 110, a damping 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.

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 limiting members 112 corresponding to the 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 slidably sleeved on the corresponding fixing columns 111 and limited by limiting pieces 112 installed at one ends, far away from the base 110, of the fixing columns 111, when vibration occurs, the damping sleeves 120 slide on the fixing columns 111 to convert kinetic energy of the vibration into heat energy to be consumed, and therefore a good damping effect can be achieved. Furthermore, the fixing post 111 may limit the front-back and left-right movement (front-back and left-right movement as shown in fig. 1) of the damping sleeve 120, the limiting member 112 may limit the maximum position of the damping sleeve 120 moving upward (upward as shown in fig. 1), and the base 110 may not only provide an installation environment for the fixing post 111, the limiting member 112 and the damping sleeve 120, but also limit the maximum position of the damping sleeve 120 moving downward (downward 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 mounted on the fixing block 130.

It can be understood that the damping sleeve 120 and the load are connected together through the fixing block 130, and the damping sleeve 120 can drive the fixing block 130 and the load to move up and down (up and down as shown in fig. 1) on the fixing post 111 together, so that the fixing post 111 can limit the movements of the damping sleeve 120, the load and the fixing block 130 (front, back, left and right as shown in fig. 1).

According to the utility model discloses shock-absorbing structure 100, establish on corresponding fixed column 111 through establishing shock attenuation cover 120 slidable ground, and link together shock attenuation cover 120 and load through fixed block 130 for fixed column 111 can restrict shock attenuation cover 120, load and fixed block 130 around (as shown in figure 1 around) the motion, moreover, when vibrations produce, shock attenuation cover 120 slides on fixed column 111 and can turn into the kinetic energy of vibrations and consume into heat energy, can play fine shock attenuation effect from this.

In some embodiments of the present invention, as shown in fig. 1 to 4, the outer peripheral wall of the damping sleeve 120 is provided with a limiting groove 121 disposed along the circumferential direction of the damping sleeve 120, and the fixing portion 131 is clamped in the limiting groove 121, so that the damping sleeve 120 and the fixing block 130 are reliably connected together by the cooperation of the limiting groove 121 and the fixing portion 131.

According to some embodiments of the present invention, referring to fig. 1, the shock-absorbing structure 100 may further include a shock-absorbing member 150, a load-mounting surface of the fixing block 130 facing the base 110; the shock absorbing member 150 is disposed between the load mounting surface and the base 110, wherein the shock absorbing member 150 may have elasticity, the elasticity of the shock absorbing structure 100 may be changed by replacing the shock absorbing member 150 with different elastic coefficients, thereby changing the natural frequency of the shock absorbing structure 100, and thus, on the basis that the shock absorbing sleeve 120 may be used to buffer the shock of the shock absorbing structure 100, the shock absorbing member 150 may be further disposed on the base 110 for supporting the load, thereby better changing the elasticity of the shock absorbing structure 100, playing a shock absorbing and buffering role in the load and the whole shock absorbing structure 100, avoiding the natural frequency of the load to be equal to the external frequency, and further avoiding the occurrence of resonance. In addition, since the shock absorbing member 150 is disposed between the base 110 and the load, a stroke of the load moving downward can be reduced and contact with the base when moving downward can be prevented, and thus generation of noise can be reduced.

In some embodiments of the present invention, referring to fig. 1, the damping member 150 may be a plate, and a through groove 123 is formed in the middle thereof; the through groove 123 is disposed opposite to the load mounting surface, and in some examples, the notch of the through groove 123 is smaller than or equal to the load, so that the load can be mounted on the shock absorbing member 150, and here, the load can be mounted at one end of the notch of the shock absorbing member 150 and can be in contact connection with the inner wall of the through groove 123, which is beneficial to enhancing the stability of load mounting and enhancing the effect of shock absorption and noise reduction of the load through the shock absorbing member 150.

According to some embodiments of the present invention, as shown in fig. 1, a mounting groove 113 is formed in a side of the base 110 facing the shock absorbing member 150; the shock absorbing member 150 is partially inserted into the mounting groove 113, and thus, the shock absorbing member 150 can be mounted in the base 110, which is beneficial to improving the mounting stability of the shock absorbing member 150, and thus, the inertia measurement unit 140 can be better supported.

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 load mounting surfaces of the weight block 160 and the fixing block 130 are oppositely disposed, so that the load can be clamped between the weight block 160 and the fixing block 130, and the load can 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, so that the weight block 160, the load and the fixing block 130 are reliably connected together, the position of the center of gravity of the shock absorbing structure 100 can be kept constant, the phenomenon of center of gravity offset 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 after the weight block 160 with different weight is replaced;

as shown in fig. 1-4, according to some embodiments of the present invention, the counterweight block 160 has a mounting post 161 facing one surface of the load mounting surface, the mounting post 161 is used for the load to be sleeved, and the mounting post 161 can position the load, so that the load can be reliably mounted on the mounting post 161, and the load is prevented from shaking. The fixing block 130 is coupled to the mounting post 161 of the weight block 160 by the second fastener 170, 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 161, and there may also be a plurality of second fasteners 170, and the plurality of second fasteners 170 correspond to the plurality of mounting posts 161 one by one. For example, in the example shown in fig. 1, the weight block 160 may be formed in a substantially square shape, the mounting posts 161 are provided in four, and four mounting posts 161 are provided at positions of four corners of the weight block 160, respectively, and accordingly, the load may be formed in a substantially square shape, and mounting holes corresponding to the mounting posts 161 are provided at the four corners of the load.

In some embodiments, the weight 160 may have a through hole. Therefore, through the through hole, the requirement that the whole weight of the balancing weight 160 needs to be reduced can be met, and the heat dissipation of the load can be facilitated.

According to some embodiments of the utility model, as shown in fig. 1, erection column 161 is including setting up in the spacing post 1611 in bottom of balancing weight 160 and the suit post 1612 of being connected with the spacing post 1611 in bottom, suit post 1612 is used for supplying the load cover to establish, the external diameter of the spacing post 1611 in bottom is greater than the external diameter of suit post 1612, and the one end of being connected with suit post 1612 in the spacing post 1611 in bottom is used for accepting the cover and locates the peripheral load of suit post 1612, the load overlaps respectively through its mounting hole 141 and establishes the suit post 1612 periphery in the corresponding erection column 161, in order to realize installing the load on balancing weight 160, and support by the spacing post 1611 in bottom. On this basis, for realizing that the load is installed between balancing weight 160 and fixed block 130 more firmly, the one end periphery that faces the load in the connecting hole 132 of fixed block 130 forms the spacing post 133 in top along the axial direction protrusion, and the spacing post 133 in top cover is located the suit post 1612 periphery and is offseted with the mounting hole 141 outer fringe of load, carries on spacingly through utilizing the spacing post 133 in top and the spacing post 1611 in bottom to the load from this, can improve the stability of load installation.

With reference to fig. 1-4, according to some embodiments of the present invention, at least one of the two axial ends of the shock-absorbing sleeve 120 is provided with a reinforcement 122, it can be understood that only one of the two axial ends of the shock-absorbing sleeve 120 may be provided with a reinforcement 122, and the two axial ends of the shock-absorbing sleeve 120 may be provided with reinforcements 122. Further, a plurality of reinforcing members 122 are arranged along the circumferential direction of the damping sleeve 120 at intervals, and each reinforcing member 122 extends along the radial direction of the damping sleeve 120, so that the structural strength of the damping sleeve 120 can be enhanced by the reinforcing members 122, and the service life of the damping sleeve 120 is prolonged.

Optionally, the reinforcement member 122 and the shock absorbing sleeve 120 are one-piece.

In some embodiments of the present invention, as shown in fig. 1-4, the fixing column 111 may include a fixing section 1111 and a sliding section 1112, and one end of the fixing section 1111 is connected to the base 110. One end of the sliding section 1112 is detachably connected to the other end of the fixed section 1111, the limiting member 112 is disposed at the other end of the sliding section 1112, and the damping sleeve 120 is slidably disposed on the sliding section 1112. It can be understood that the damping sleeve 120 is connected to the fixed section 1111 through the sliding section 1112, 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 is detachably connected to the fixed section 1111, 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, a positioning column is disposed on one of the fixed section 1111 and the sliding section 1112, and a positioning hole engaged with the positioning column is disposed on the other of the fixed section 1111 and the sliding section 1112; the fixed section 1111 and the sliding section 1112 are detachably connected through the matching of the positioning column and the positioning hole. The fixed section 1111 and the sliding section 1112 can be firmly installed together through the matching of the positioning column and the positioning hole. But the structure for realizing the detachable installation between the fixed segment 1111 and the sliding segment 1112 is not limited thereto.

Referring to fig. 1-4, in some embodiments of the present invention, the position-limiting member 112 may be a gasket, and the gasket is fixed on the fixing pillar 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 utility model provides a do not prescribe a limit to this, as long as locating part 112 can realize the embodiment of the utility model provides a mentioned limit function can.

According to some embodiments of the utility model, the damper 150 can be a sponge, and the sponge has advantages such as elasticity is good, the noise filtering effect is good, with low costs. The use of the sponge as the shock absorbing member 150 allows the shock absorbing member 150 to have excellent elasticity while filtering noise, and also reduces the cost of the shock absorbing structure 100.

It should be noted that the technical features of the present invention in the above embodiments 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, the embodiment of the present invention further provides an inertia measurement apparatus 1000, where the inertia measurement apparatus 1000 includes an inertia measurement unit 140 and the damping structure 100 in any of the above embodiments, the inertia measurement unit 140 may be the above load, and the inertia measurement unit 140 is installed on the fixing block 130.

Furthermore, the embodiment of the utility model provides a still provide a movable platform, can movable platform include as above inertia measurement device 1000 and organism. The inertial measurement unit 1000 may be connected to the body to measure the acceleration and attitude angle of the movable platform, and particularly, the inertial measurement unit 140 may measure the acceleration and attitude angle of the movable platform. Wherein, the movable platform can be but is not limited to: airplanes, trains, motor vehicles, unmanned aerial vehicles, robots, etc. It should be noted that, when movable platform moves, can produce an external frequency to shock-absorbing structure 100, shock-absorbing structure 100 itself has natural frequency, can produce resonance when external frequency and natural frequency are equal, and resonance can destroy the accuracy that inertial measurement unit 140 detected, however, the utility model discloses movable platform is through having loaded the utility model discloses shock-absorbing structure 100 that the embodiment provided can avoid above-mentioned phenomenon to take place, and the reason please see above-mentioned relevant record, no longer has the repeated description here.

Through the technical scheme that any above-mentioned embodiment recorded, the embodiment of the utility model provides a can produce following beneficial technological effect at least:

through establish damping sleeve 120 slidable cover on corresponding fixed column 111, fixed block 130 is established on damping sleeve 120 through fixed part 131 cover, and will need to carry out absorbing load and install in fixed block 130, can make the vibrations that the load received transmit on each damping sleeve 120 through fixed block 130, each damping sleeve 120 receives after the vibrations effort, can slide along fixed column 111 and take place the friction with fixed column 111, thereby convert the vibrations energy into comparatively gentle motion and/or the heat energy that produces because of the friction in the motion process, and then can reach fine shock attenuation effect, in order to avoid the influence that vibrations produced the work of load, be favorable to improving load job stabilization nature and precision. Moreover, as can be seen from the above, since each damping sleeve 120 slides along at most the corresponding fixing column 111 when vibration occurs, the fixing block 130 sleeved on each damping sleeve 120 can only move along with the damping sleeve 120 in the direction limited by the fixing column 111, in short, the damping sleeve 120, the load and the fixing block 130 can be limited by the fixing column 111 through the related structure, and the problems of inaccurate final measurement result, unstable working state and the like caused by the movement of the load in the front-back direction and/or the left-right direction can be avoided.

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 present 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 present 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 (14)

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 sleeves are sleeved with a plurality of damping sleeves, the damping sleeves correspond to the fixing columns one by one, the damping sleeves are slidably sleeved on the corresponding fixing columns and limited by limiting parts arranged at one ends of the fixing columns far away from the base;

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 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.

3. The cushioning structure of claim 1, further comprising a cushioning member; the load mounting surface of the fixed block faces the base; the shock absorbing member is disposed between the load mounting surface and the base.

4. The shock-absorbing structure according to claim 3, wherein the shock-absorbing member has a plate shape, and a through groove is formed in the middle thereof; the through groove is opposite to the load mounting surface.

5. The structure according to claim 3 or 4, wherein a mounting groove is provided in a side of the base facing the shock absorbing member, and the shock absorbing member is partially fitted into the mounting groove.

6. The shock-absorbing structure according to claim 1 or 3, further comprising a weight, wherein the weight and the load-mounting surface of the fixing block are disposed to face each other.

7. The damping structure according to claim 6, wherein a mounting post is disposed on a surface of the weight block facing the load mounting surface, and the mounting post is used for a load to be sleeved; the fixed block passes through the second fastener with the erection column of balancing weight is connected to the fixed position with the load between the balancing weight.

8. The shock-absorbing structure of claim 7, wherein the mounting post comprises a bottom limiting post disposed on the weight block and a nesting post connected to 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.

9. The structure according to claim 1, wherein at least one of the two axial ends of the damper sleeve is provided with a reinforcing member.

10. The structure of claim 9, wherein the reinforcing member is provided in plurality, the plurality of reinforcing members being arranged at intervals along the circumferential direction of the damper sleeve, and each reinforcing member extending in the radial direction of the damper sleeve.

11. The shock absorbing structure as set forth in claim 1, wherein said fixing post comprises:

the fixed section, one end of the said fixed section is connected with said base;

one end of the sliding section is detachably connected with the other end of the fixed section; the limiting part is arranged at the other end of the sliding section, and the damping sleeve is arranged on the sliding section in a sliding mode.

12. The shock-absorbing structure according to claim 11, wherein one of the fixed section and the sliding section is provided with a positioning post, the other of the fixed section and the sliding section is provided with a positioning hole matched with the positioning post, and the fixed section and the sliding section are detachably connected through matching of the positioning post and the positioning hole.

13. An inertial measurement unit comprising an inertial measurement unit and the shock-absorbing structure of any one of claims 1 to 12, the inertial measurement unit being mounted on the fixed block.

14. A movable platform comprising the inertial measurement unit of claim 13.

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