CN215526100U

CN215526100U - Laser radar support and vehicle

Info

Publication number: CN215526100U
Application number: CN202121418631.7U
Authority: CN
Inventors: 岳志强
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2022-01-14
Anticipated expiration: 2031-06-24

Abstract

The utility model provides a laser radar support and a vehicle, and belongs to the technical field of automobiles. According to the laser radar support, the vibration reduction cavity and the elastic vibration reduction block are arranged on the support body from the structure transmission path, so that the integral rigidity of the support can be improved, the sensitivity of vibration noise wave transmission is reduced, the effect of reducing noise vibration energy generated by a laser radar is achieved, and noise in a vehicle is reduced; from the air transmission route, damping cavity and elasticity damping piece have the sound absorption effect, can attenuate the noise vibration energy through the damping cavity, promote the holistic sound insulation sound absorption performance of support, reduce the noise in the car.

Description

Laser radar support and vehicle

Technical Field

The utility model belongs to the technical field of automobiles, and particularly relates to a laser radar support and a vehicle.

Background

The LIDAR-light Detection and ranging is also called an optical radar scanner and is used for accurately measuring the position, the motion state and the shape of a target, and detecting, identifying, distinguishing and tracking the target. The laser radar is a necessary sensor for intelligent driving of the vehicle to enter the level L3 (the level L3 is conditional automation), and the laser radar provides reference for intelligent driving by testing the surrounding environment of the vehicle and inputting data into a vehicle control module for analysis.

Laser radar passes through the motor and produces the laser beam, utilizes laser reflection to carry out accurate measurement to the vehicle environment, and the laser radar motor during operation can produce noise energy, and this noise is passed through structure route, air route and is transmitted to in the car, arouses noise in the car, is the problem that new energy automobile, intelligent driving vehicle all need solve.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a laser radar support which can attenuate noise vibration energy generated by a laser radar motor and improve quiet and comfortable driving experience.

In order to achieve the above object, the first aspect of the present invention employs the following technical solutions: there is provided a lidar mount comprising: the left end of the support frame body is connected with the vehicle body, the right end of the support frame body is connected with the laser radar, and a vibration damping cavity is formed in the support frame body; an elastic vibration reduction block is arranged in the vibration reduction cavity.

With reference to the first aspect, in a possible implementation manner, the elastic damping block is a rubber part, an up-down through damping channel is arranged in the middle of the elastic damping block, corrugated structures are respectively arranged on a front side wall and a rear side wall of the damping channel, and the corrugated structures extend along the left-right direction of the damping channel.

With reference to the first aspect, in a possible implementation manner, the vibration damping cavity has a rectangular cavity structure, a middle part of a left end of the elastic vibration damping block is connected to a left side wall of the vibration damping cavity, and a middle part of a right end of the elastic vibration damping block is connected to a right side wall of the vibration damping cavity; gaps are arranged between the elastic vibration reduction block and the lower side wall, the upper side wall, the front side wall and the rear side wall of the vibration reduction cavity respectively.

With reference to the first aspect, in a possible implementation manner, a magnet block is disposed in the attenuation channel, and the support frame body is made of a diamagnetic material.

With reference to the first aspect, in one possible implementation manner, a gap is provided between the magnet block and each of the lower side wall and the upper side wall of the vibration reduction cavity.

With reference to the first aspect, in one possible implementation manner, the vibration reduction cavity is filled with a high-viscosity liquid, and the dynamic viscosity value of the high-viscosity liquid is greater than 1000N · s/square meter.

With reference to the first aspect, in a possible implementation manner, the front end surface and the rear end surface of the support frame body are respectively provided with a first arch structure, and both the first arch structures arch toward the attenuation passage.

With reference to the first aspect, in a possible implementation manner, a second arch structure is arranged on the right end face of the support frame body, and the second arch structure arches towards the vibration reduction cavity.

With reference to the first aspect, in one possible implementation manner, the support frame body is provided with a first connecting part connected with the vehicle body and a second connecting part connected with the laser radar; the first connecting part is provided with a first connecting hole; the second connecting portion is provided with a second connecting hole.

Compared with the prior art, the laser radar bracket provided by the utility model has the beneficial effects that: firstly, a vibration reduction cavity and an elastic vibration reduction block which are arranged on a support frame body are arranged on a structure transmission path, so that the integral rigidity of the support frame can be improved, the transmission sensitivity of vibration noise waves is reduced, the effect of attenuating noise vibration energy generated by a laser radar is achieved, and the noise in a vehicle is reduced; secondly, the vibration reduction cavity and the elastic vibration reduction block have a sound absorption effect on the air transmission path, so that the noise vibration energy passing through the vibration reduction cavity can be attenuated, the integral sound insulation and absorption performance of the support is improved, and the noise in the vehicle is reduced; thirdly, the support frame body is provided with a vibration reduction cavity, so that the lightening of the support can be realized, the whole weight of the support is reduced, the lightening of the whole vehicle is facilitated, and the reduction of the endurance mileage of the whole vehicle is avoided.

In a second aspect, the embodiment of the utility model further provides a vehicle, which includes the laser radar bracket.

The vehicle shown in the embodiment of the application can improve the rigidity of the support, realize the attenuation of noise vibration energy, reduce the noise in the vehicle, and ensure the endurance mileage of the whole vehicle on the basis of light weight.

Drawings

Fig. 1 is a schematic front view of a lidar bracket according to an embodiment of the present invention;

FIG. 2 is a schematic bottom view of the lidar mount provided in FIG. 1;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic view, partly in section, of the lidar mount shown in FIG. 2;

description of reference numerals:

1. a laser radar; 2. a support frame body; 21. a first dome; 22. a first connection hole; 23. a first connection portion; 24. a second connecting portion; 25. a second dome; 26. a second connection hole; 27. an elastic damping mass; 28. a magnet block; 29. a corrugated structure; 30. an attenuation channel; 31. a vibration damping cavity; 32. a clamping groove.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inside", "outside", etc. appear, they are based on the orientation or positional relationship shown in the drawings and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 to 4 together, a laser radar mount according to the present invention will now be described. The laser radar support comprises a support frame body 2, the left end of the support frame body 2 is connected with a vehicle body, the right end of the support frame body 2 is connected with a laser radar 1, and a vibration reduction cavity 31 is arranged in the support frame body 2; an elastic damping mass 27 is arranged in the damping cavity 31.

In the present embodiment, the up-down direction is a vertical direction in fig. 4, the left-right direction is a horizontal direction in fig. 4, and the front-back direction is a direction perpendicular to the paper surface in fig. 4.

According to the laser radar support provided by the embodiment, the vibration reduction cavity 31 and the elastic vibration reduction block 27 which are arranged on the support frame body 2 are arranged on the structural transmission path, so that the integral rigidity of the support can be improved, the sensitivity of vibration noise wave transmission is reduced, the effect of attenuating noise vibration energy generated by the laser radar 1 is achieved, and the noise in a vehicle is reduced; from the air transmission path, the vibration reduction cavity 31 and the elastic vibration reduction block 27 have the sound absorption effect, so that the noise vibration energy passing through the vibration reduction cavity 31 and the elastic vibration reduction block 27 can be attenuated, the sound insulation and absorption performance of the whole support is improved, and the noise in the vehicle is reduced; the noise fluctuation energy is partially converted into heat through the elastic vibration reduction block 27 to realize attenuation, so that the noise energy in the vehicle is reduced; the support frame body 2 is provided with the vibration reduction cavity 31, so that the lightening of the support can be realized, the whole weight of the support is reduced, the lightening of the whole vehicle is facilitated, and the reduction of the endurance mileage of the whole vehicle is avoided.

As an improved embodiment of the elastic damping block 27, referring to fig. 3 and 4, the elastic damping block 27 is made of rubber, the middle of the elastic damping block 27 is provided with an attenuation channel 30 penetrating up and down, the front side wall and the rear side wall of the attenuation channel 30 are respectively provided with a corrugated structure 29, and the corrugated structure 29 extends along the left-right direction of the attenuation channel 30. The front side wall and the rear side wall of the attenuation channel 30 are respectively provided with a corrugated structure 29, and wave movement is generated under the excitation of noise wave energy, so that the noise wave energy is converted into heat for attenuation. In which the arrows shown in fig. 1 and 3 are the directions in which noise fluctuation energy propagates.

Referring to fig. 4, the vibration damping cavity 31 is a rectangular cavity structure, the middle of the left end of the elastic vibration damping block 27 is connected to the left side wall of the vibration damping cavity 31, and the middle of the right end of the elastic vibration damping block 27 is connected to the right side wall of the vibration damping cavity 31; gaps are respectively arranged between the elastic vibration reduction block 27 and the lower side wall, the upper side wall, the front side wall and the rear side wall of the vibration reduction cavity 31. The space is all equipped with between the lateral wall of this embodiment elasticity damping piece around and about and part damping cavity on every side, makes elasticity damping piece be in unsettled setting, combines the ripple structure that sets up, under the excitation of noise fluctuation energy, elasticity damping piece can produce the wave and remove to turn into the heat with noise fluctuation energy and attenuate, reach the effect of damping vibration isolation.

In order to achieve a better noise attenuation effect, the left length and the right length of the vibration attenuation cavity are larger than the front width and the rear width of the vibration attenuation cavity, similarly, the left length and the right length of the elastic vibration attenuation block are larger than the front width and the rear width of the elastic vibration attenuation block, and only the middle part of the left direction and the right direction of the elastic vibration attenuation block is connected with the vibration attenuation cavity, so that the left and the right connection positions of the elastic vibration attenuation block are equivalent to point connection, wave movement is convenient to achieve after connection, and a better energy attenuation effect is achieved.

Optionally, on the basis that gaps are formed between the elastic damping block 27 and the lower side wall, the upper side wall, the front side wall and the rear side wall of the damping cavity 31 respectively, gaps are formed between the elastic damping block 27 and the left side wall and the right side wall of the damping cavity 31 respectively, and the middle point is connected to facilitate wave movement, so that a better energy attenuation effect is achieved.

In other embodiments (not shown), at least two elastic damping blocks 27 are disposed in the damping cavity 31, and the gap between two adjacent elastic damping blocks 27 is the damping channel 30. The corrugated structure 29 is provided on both side inner walls of the damping channel 30, so that the damping rate of noise fluctuation energy can be increased. The middle parts of the left and right ends of the elastic damping block 27 form connecting protrusions to be connected with the side walls of the damping cavity 31 so as to generate wave motion.

Based on the support frame body 2 provided with the elastic damping block 27, in some embodiments, referring to fig. 3 and 4, the magnet block 28 is arranged in the damping channel 30, and the support frame body 2 is made of diamagnetic material. For example, the support body can adopt copper, gold, silver material etc. and this embodiment adopts the copper material, utilizes the copper material to have diamagnetism's characteristics, can completely cut off vehicle static magnetism to lidar 1's interference, improves lidar 1 to the accuracy nature of surrounding environment test, provides accurate driving reference for the vehicle.

When the copper support frame body 2, the vibration reduction cavity 31 and the elastic vibration reduction block 27 of the corrugated structure 29 are combined, when the magnet or the copper generates vibration displacement, the copper or the magnet can prevent the other side from vibrating displacement, and the noise vibration excitation energy generated by the laser radar 1 motor is attenuated; the rubber part of the corrugated structure 29 can generate wave movement under the excitation of noise wave energy, and the noise wave energy is converted into heat for attenuation; thereby enabling to maintain a quiet and comfortable driving environment in the vehicle.

As a specific embodiment, referring to fig. 4, a gap is provided between the magnet block 28 and the lower and upper side walls of the vibration damping cavity 31, respectively. The magnet block is also arranged in a suspended mode by combining the elastic damping block 27 arranged in a suspended mode, and under the excitation of noise fluctuation energy, the magnet block moves along with the elastic damping block 27 to generate waves, so that the noise fluctuation energy is converted into heat to be attenuated, the speed of noise fluctuation energy attenuation can be increased, and a quiet and comfortable environment in a vehicle is guaranteed.

On the basis of the elastic vibration reduction blocks 27 and the magnet blocks 28, the vibration reduction cavity 31 of the embodiment is filled with high-viscosity liquid, and the dynamic viscosity value of the high-viscosity liquid is more than 1000N · s/square meter. For example, the damping cavity 31 is filled with high viscosity ethanol or dodecane, and when noise fluctuation energy passes through the damping cavity 31, the high viscosity fluid attenuates the noise vibration excitation energy by utilizing the viscosity of the fluid itself, the flow resistance of the fluid, and the fluctuation of the fluid and the block magnet and the corrugated rubber member. Because elasticity damping piece and the unsettled setting of magnet piece, consequently, high viscosity liquid is filled around elasticity damping piece and magnet piece, more does benefit to the wave and moves.

In another embodiment shown in fig. 1 and 3, the front end surface and the rear end surface of the support frame 2 are respectively provided with a first arch structure 21, and both the first arch structures 21 are arched towards the attenuation passage 30. The support frame body 2 of this embodiment designs for domes, utilizes the arch to have the characteristics of stability and promotes support bulk rigidity, and the route of extension noise fluctuation energy propagation reduces vibration transmission sensitivity.

Wherein, the up end and the lower terminal surface of supporting the support body 2 can set up to domes or planar structure, and when the up end and the lower terminal surface of supporting the support body 2 were domes, the up end upwards was protruding, and the lower terminal surface is protruding downwards. The overall rigidity of the support is improved by utilizing the characteristic that the arch has stability, the path for transmitting noise fluctuation energy is lengthened, and the vibration transmission sensitivity is reduced.

Optionally, as shown in fig. 1 and fig. 3, the right end surface of the support frame body 2 provided in the present embodiment is provided with a second arched structure 25, and the second arched structure 25 is arched toward the vibration damping cavity 31. The second dome-shaped structure 25 increases the contact area with the laser radar 1, thereby increasing the blocking area on the propagation path of the noise fluctuation energy, providing an effect of attenuation of the noise fluctuation energy.

In this embodiment, the second arch structure 25 and the first arch structure 21 of the support frame body 2 may be combined together to serve as the structure of the support frame body 2, or may be used alone to serve as the structure of the support frame body 2.

In conjunction with the above embodiments, as shown in fig. 1 to 4, the present embodiment provides an example of the support frame body 2 as follows: the support frame body 2 is of a plate-shaped structure, a rectangular vibration damping cavity 31 is arranged in the support frame body, the long edge of the vibration damping cavity 31 is consistent with the direction of noise fluctuation energy propagation, on the basis of reducing the size of the support frame, the path of noise fluctuation energy attenuation is improved, and therefore the attenuation effect is improved.

Specifically, support body 2 and include base and apron, and the ascending recess of opening direction is seted up at the base top, and apron spiro union or joint are at the bottom plate top for seal this recess, and the recess forms damping cavity 31 with the apron jointly, adopt the installation that this kind of design can conveniently realize elasticity damping piece 27 and magnetic block.

As a specific embodiment of the present embodiment, referring to fig. 1 to 3, the support frame body 2 has a first connection portion 23 connected to the vehicle body and a second connection portion 24 connected to the laser radar 1; the first connection portion 23 is provided with a first connection hole 22; the second connecting portion 24 is provided with a second connecting hole 26. The laser radar support is connected with the vehicle body through bolts penetrating through the first connecting holes 22, and the laser radar 1 is connected with the laser radar support through bolts penetrating through the second connecting holes 26. The design of lidar support should have sufficient intensity and appropriate rigidity, can provide 1 sufficient stability of lidar, and the lightweight as far as possible satisfies the design demand simultaneously, is convenient for installation and maintenance.

Specifically, the first connection portion is provided with two first connection holes 22, and the second connection portion is provided with three second connection holes 26.

In this embodiment, referring to fig. 2 and 4, the first connecting portion 23 is provided with a slot 32 having an opening facing away from the second connecting portion 24, so as to be fastened by bolts after being fastened to the vehicle body.

Based on the same inventive concept, the embodiment of the application also provides a vehicle which comprises the laser radar bracket. The vehicle shown in the embodiment of the application can improve the rigidity of the support, realize the attenuation of noise vibration energy, reduce the noise in the vehicle, and ensure the endurance mileage of the whole vehicle on the basis of light weight.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A laser radar support comprises a support frame body (2), wherein the left end of the support frame body (2) is connected with a vehicle body, and the right end of the support frame body (2) is connected with a laser radar (1), and is characterized in that a vibration reduction cavity (31) is arranged in the support frame body (2); an elastic vibration reduction block (27) is arranged in the vibration reduction cavity (31).

2. The lidar mount of claim 1, wherein the elastic damping block (27) is a rubber member, the middle portion of the elastic damping block (27) is provided with a damping channel (30) which is vertically penetrated, the front side wall and the rear side wall of the damping channel (30) are respectively provided with a corrugated structure (29), and the corrugated structure (29) extends along the left-right direction of the damping channel (30).

3. The lidar mount of claim 2, wherein the damping cavity (31) has a rectangular cavity structure, a left middle portion of the elastic damping block (27) is connected to a left side wall of the damping cavity (31), and a right middle portion of the elastic damping block (27) is connected to a right side wall of the damping cavity (31); gaps are arranged between the elastic vibration reduction block (27) and the lower side wall, the upper side wall, the front side wall and the rear side wall of the vibration reduction cavity (31) respectively.

4. Lidar mount according to claim 2, wherein a magnet block (28) is provided in said damping channel (30), and said support body (2) is made of a diamagnetic material.

5. Lidar bracket according to claim 4, wherein a gap is provided between said magnet block (28) and the lower and upper side walls, respectively, of said damping cavity (31).

6. The lidar mount of claim 1, wherein said vibration-damping cavity (31) is filled with a vibration-damping fluid, said vibration-damping fluid having a dynamic viscosity number greater than 1000N · s/° c.

7. Lidar mount according to claim 2, wherein said support frame (2) is provided with a first arch (21) at each of its front and rear end faces, both said first arches (21) being arched towards said attenuating channel (30).

8. Lidar bracket according to claim 7, wherein the right end face of said support frame (2) is provided with a second arch (25), said second arch (25) being arched towards said damping cavity (31).

9. Lidar bracket according to claim 1, wherein said support frame (2) has a first connection portion (23) to a vehicle body and a second connection portion (24) to a lidar; the first connecting part (23) is provided with a first connecting hole (22); the second connecting portion (24) is provided with a second connecting hole (26).

10. A vehicle comprising a lidar mount according to any of claims 1 to 9.