CN115574029A - Shock absorber, intelligent sensing device and carrier - Google Patents

Shock absorber, intelligent sensing device and carrier Download PDF

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Publication number
CN115574029A
CN115574029A CN202211185023.5A CN202211185023A CN115574029A CN 115574029 A CN115574029 A CN 115574029A CN 202211185023 A CN202211185023 A CN 202211185023A CN 115574029 A CN115574029 A CN 115574029A
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CN
China
Prior art keywords
intelligent sensing
end surface
face
sensing device
intelligent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211185023.5A
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Chinese (zh)
Inventor
郑金铎
林巧
张明飞
蒋开峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Yikong Zhijia Technology Co Ltd
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Beijing Yikong Zhijia Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Beijing Yikong Zhijia Technology Co Ltd filed Critical Beijing Yikong Zhijia Technology Co Ltd
Priority to CN202211185023.5A priority Critical patent/CN115574029A/en
Publication of CN115574029A publication Critical patent/CN115574029A/en
Priority to PCT/CN2023/119508 priority patent/WO2024067220A1/en
Pending legal-status Critical Current

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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
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/371—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by inserts or auxiliary extension or exterior elements, e.g. for rigidification
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • 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
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/373—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape
    • 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
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/373—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape
    • F16F1/377—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape having holes or openings
    • 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
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • F16F13/20—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper characterised by comprising also a pneumatic spring
    • 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
    • F16F15/022—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 dampers and springs in combination
    • 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
    • F16F15/023—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 fluid means
    • F16F15/0232—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 fluid means with at least one gas spring
    • 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
    • F16F15/08—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 with rubber springs ; with springs made of rubber and metal
    • 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
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Vibration Dampers (AREA)

Abstract

The invention provides a shock absorber, an intelligent sensing device and a carrier, and relates to the technical field of laser radars. The shock absorber comprises a shock absorption sleeve, a first connecting part and a second connecting part, wherein the hardness of the materials of the first connecting part and the second connecting part is greater than that of the materials of the shock absorption sleeve; the first connecting part is positioned at one end of the damping sleeve and is used for connecting the fixing part of the intelligent sensing equipment; the second connecting part is positioned at the other end of the damping sleeve and is used for detachably connecting a carrier for bearing the intelligent sensing equipment; the damping sleeve is provided with a first end face close to the first connecting portion and a second end face close to the second connecting portion, and the area of the first end face is smaller than that of the second end face. The vibration absorber is applied to the intelligent sensing device and a loaded carrier thereof.

Description

Shock absorber, intelligent sensing device and carrier
Technical Field
The invention relates to the field of carriers, in particular to a shock absorber, an intelligent sensing device and a carrier.
Background
At present, automated driving of vehicles is one of the research hotspots, and in order to better collect various information of vehicles running on roads, more and more intelligent sensing devices are added to the vehicles to provide road running information to a vehicle control system. Generally, in order to provide higher-precision sensing data, the smart sensing devices are more precise, and accordingly are more susceptible to various shock impacts to lose life, the conditions of vehicles running on roads are complicated and variable, for example, due to the fact that the roads are rugged, vibration energy generated by vehicle bumping is high, impact acceleration of the ground to a vehicle body is large, some vehicles do not have a vibration damping system, and some vehicles do not have the vibration damping system but cannot sufficiently counteract the loss of the shock and the impact to some precise devices in the vehicles, so that the life of the smart sensing devices is greatly shortened.
Disclosure of Invention
In order to solve the problem that the service life of the intelligent sensing equipment is shortened due to vehicle vibration, the invention provides the following technical scheme:
according to an aspect of the present invention, a shock absorber is provided, which includes a shock-absorbing sleeve, a first connecting portion and a second connecting portion, wherein the hardness of the material of the first connecting portion and the hardness of the material of the second connecting portion are both greater than the hardness of the material of the shock-absorbing sleeve; the first connecting part is positioned at one end of the vibration damping sleeve and is used for connecting a fixing part of the intelligent sensing equipment; the second connecting part is positioned at the other end of the damping sleeve and is used for detachably connecting a carrier for bearing the intelligent sensing equipment;
the vibration damping sleeve is provided with a first end face close to the first connecting portion and a second end face close to the second connecting portion, and the area of the first end face is smaller than that of the second end face.
According to another aspect of the present invention, an intelligent sensing device is provided, which includes an intelligent sensing device assembly, wherein the intelligent sensing device assembly includes an intelligent sensing device and a fixing portion for mounting the intelligent sensing device, and at least one vibration damper according to any one of the above descriptions, the vibration damper is disposed on a side of the fixing portion facing away from the intelligent sensing device, and the first connecting portion of each vibration damper is connected to the fixing portion.
According to another aspect of the present invention, there is provided a vehicle, including the smart sensor device according to any one of the above-mentioned embodiments; the intelligent sensing device is detachably connected with the carrier through the second connecting part.
The two ends of the vibration damping sleeve are respectively provided with the connecting parts, and the vibration damper is arranged between the intelligent sensing equipment and a carrier bearing the intelligent sensing equipment through the two connecting parts; meanwhile, the material hardness of the two connecting parts is greater than that of the damping sleeve, so that vibration impact can be quickly attenuated, impact energy is absorbed by the damping sleeve, loss of vibration and impact environments to the intelligent sensing equipment is offset, and the service life of the intelligent sensing equipment is prolonged; in addition, when the two connecting parts are detachably connected with the members to be connected, the connecting parts are more easily and tightly fixed due to the higher hardness of the connecting parts, and the connecting parts are not easily loosened in the environment of impact and vibration. Meanwhile, the first end face of the damping sleeve, which is close to the first connecting portion, is smaller than the second end face of the damping sleeve, which is close to the second connecting portion, so that better stable support and buffering are provided.
The intelligent sensing device and the vehicle provided by the invention have similar technical advantages due to the adoption of the vibration absorber.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the principles of the invention.
Fig. 1 is a schematic perspective view of a laser radar apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view of a shock absorber according to an embodiment of the present invention.
Fig. 3 is a schematic perspective view of a fixing portion according to an embodiment of the present invention.
Fig. 4 is a schematic top view of a fixing portion according to an embodiment of the invention.
FIG. 5 is a graphical comparison of acceleration input and output curves for an additive shock absorber according to an embodiment of the present invention.
Reference numerals: 1. a shock absorber; 11. a first connection portion; 12. a second connecting portion; 13. a damping sleeve; 2. a laser radar component; 21. a laser radar; 22. a fixed part; 23. a counterweight portion; 24. a wire harness pipe clamp; 25. a wire harness joint; 3. a base plate; 41. a geometric center; 42. a center point.
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 invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship that is indicated based on the orientation or positional relationship as shown in the figures, which is for convenience in describing the invention and to simplify the description, and that does not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner and is not to be construed as limiting the invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the prior art, when the intelligent sensing equipment is used for collecting environmental information in automatic driving or auxiliary driving of a vehicle, the vibration energy is large and the impact acceleration is high when the vehicle vibrates due to uneven roads, the precision of the intelligent sensing equipment is easily influenced, the equipment is easily damaged, and the service life of the equipment is shortened.
The invention provides a shock absorber which comprises a shock absorption sleeve, a first connecting part and a second connecting part, wherein the hardness of the materials of the first connecting part and the second connecting part is greater than that of the materials of the shock absorption sleeve; the first connecting part is positioned at one end of the damping sleeve and is used for connecting the fixing part of the intelligent sensing equipment; the second connecting part is positioned at the other end of the damping sleeve and is used for detachably connecting a carrier for bearing the intelligent sensing equipment; the damping sleeve is provided with a first end face close to the first connecting portion and a second end face close to the second connecting portion, and the area of the first end face is smaller than that of the second end face.
In some embodiments, the smart sensor device is a lidar. The intelligent sensing device can also be other radars, or a video acquisition sensor, an infrared sensor and the like.
It will be appreciated that embodiments of the present invention may provide vibration damping for integration of a variety of smart sensor devices, preferably for a separate smart sensor device such as a lidar, both longitudinally and laterally.
In some embodiments, the intelligent sensing device is exemplified by a laser radar, as shown in fig. 1 and 2, a shock absorber 1 is provided, which includes a shock absorbing sleeve 13, a first connecting portion 11 disposed at one end of the shock absorbing sleeve 13, and a second connecting portion 12 disposed at the other end of the shock absorbing sleeve 13, wherein the hardness of the materials of the first connecting portion 11 and the second connecting portion 12 is greater than that of the shock absorbing sleeve 13; the first connecting part 11 is used for connecting a fixing part 22 of the intelligent sensing equipment, and the second connecting part 12 is used for being detachably connected to the carrier; the damper bushing 13 has a first end surface close to the first connection portion 11 and a second end surface close to the second connection portion 12, the first end surface having an area smaller than that of the second end surface. In some embodiments, the orthographic projection of the first end face of the damping sleeve 13 on the second end face is located within the second end face.
In some embodiments, as shown in fig. 2, in actual use, the damper 1 is disposed between the fixing portion 22 of the laser radar 21 and the vehicle, wherein the first connecting portion 11 is connected to the fixing portion 22, and the second connecting portion 12 is fixedly connected to the vehicle, exemplarily, the laser radar 21 is disposed on the upper portion of the vehicle, and the damper 1 supports the fixing portion 22 of the laser radar 21. When the vehicle vibrates to generate acceleration impact, the material hardness of the damping sleeve 13 is low, and the damping sleeve can absorb impact energy. In some embodiments, the damping sleeve 13 further includes a hollow cavity (not shown), and the damping sleeve 13 has a cavity filled with air, so that the whole damping sleeve 13 absorbs more impact energy, thereby achieving the purpose of resisting the laser radar shock.
The two ends of the vibration damping sleeve are respectively provided with the connecting parts, so that the vibration damper can be arranged between the intelligent sensing equipment and a carrier bearing the intelligent sensing equipment by utilizing the two connecting parts; meanwhile, the material hardness of the two connecting parts is greater than that of the damping sleeve, so that vibration impact can be quickly attenuated, impact energy is absorbed by the damping sleeve, loss of vibration and impact environments to the intelligent sensing equipment is offset, and the service life of the intelligent sensing equipment is prolonged; in addition, when the two connecting parts are detachably connected with the corresponding members to be connected, the hardness of the two connecting parts is higher, the connecting parts are easier to fix tightly, and the two connecting parts are not easy to loosen under the environment of impact and vibration.
In some embodiments, the orthographic projection of the first end face of the damping sleeve 13 on the second end face is located in the second end face, so that the damping sleeve has a structure which is small at the top and big at the bottom, and the structure is more stable and reliable, and the impact of vibration from all directions on the equipment is counteracted.
In some embodiments, as shown in fig. 2, the center of the orthographic projection of the first end face on the second end face coincides with the center of the second end face. This is to absorb the impact of the vibration to the maximum extent, and to cancel out the effect of the vibration in the direction perpendicular to the plane on the device.
In some cases, if it is considered that the smart sensor device is installed in a vehicle, such as a vehicle, and may also be subjected to impact in a driving direction, such as a rock collision, a brake, or the like, it may also be considered that the center of the orthographic projection of the first end face on the second end face and the center of the second end face do not coincide.
In some embodiments, the damping sleeve 13 is frustum-shaped with a small top and a large bottom. For example, as shown in fig. 2, the damping sleeve 13 has a first section parallel to the plane near the first connection portion 11, and a second section parallel to the plane near the second connection portion 12, the outer contour of the first section being smaller than that of the second section.
This kind of frustum structure makes shock absorber 1 have relatively stable bearing structure and better damping effect, and moreover, the less the department that shock absorber 1 and fixed part 22 are connected for impact energy passes to the less of fixed part 22, and then the impact that passes to lidar 21 from fixed part 22 is littleer, thereby reduces the loss to lidar 21, prolongs lidar 21's life.
In some embodiments, there are multiple implementations of the frustum shape, such as a pyramid, a cone, etc.; and the frustum can also be discontinuously changed, as shown in fig. 2, the damping sleeve 13 is close to the first connecting part 11, and the side section is expanded slowly and then quickly along the direction far away from the first connecting part 11; close to the second connection 12, in the direction away from the second connection 12, the side cross section remains constant as a rectangle, thus constituting the outer contour of the damping sleeve 13.
Described from another angle, the outer profile of the first section gradually expands in a direction away from the first connecting portion 11; and/or the outer contour of the second cross section remains unchanged in the direction away from the second connection 12.
Further, the outer contour of the first cross section is expanded at a slow speed first and then at a fast speed in a direction away from the first connecting portion 11.
In some embodiments, damping sleeve 13 includes one or more internal hollow cavities, one or more of which may be closed or open, for open cavities, for air, or for closed cavities, for air or other gases, such as nitrogen, etc.
The damping sleeve 13 may include a plurality of coaxial cavities, a plurality of non-coaxial cavities, or both coaxial and non-coaxial cavities. The shape and distribution of the cavities will affect the damping effect of the damping sleeve.
The damping sleeve 13 further comprises a cylindrical wall portion for enclosing the cavity, and the thicknesses of the wall portions may be the same or different. It is possible to have a thicker wall portion near the impact receiving side, for example, at the second connecting portion 12, to increase the strength.
In some embodiments, the damping sleeve 13 is made of a high damping, low hardness material, such as rubber, polyurethane or engineering plastic, so that the vibration impact can be quickly attenuated. It is understood that the above-mentioned rubbers, polyurethanes, engineering plastics may be of the kind known in the art, and for example, the engineering plastics include polyamide, polycarbonate, polyoxymethylene, modified polyphenylene oxide, thermoplastic polyester, etc., and the polyurethane may be a polyurethane elastomer, so long as a certain rigidity is ensured, or a material having a small compressibility is used. The first connecting portion 11 and the second connecting portion 12 may be made of the same or different materials, for example, the metal of the first connecting portion 11 and the second connecting portion 12 is a metal known in the art, such as iron, copper, aluminum, and various alloys thereof. For example, engineering plastics such as those used for damping sleeves may be used for the first connecting portion 11 and the second connecting portion 12.
In some embodiments, when the first connecting portion 11 and the second connecting portion 12 are made of engineering plastics, the damping sleeve 13 is made of a material with hardness lower than that of the connecting portions.
In some embodiments, the first connecting portion 11, the second connecting portion 12 and the damping sleeve 13 are respectively connected with each other in a fitting manner. By taking the first connecting portion 11 and the second connecting portion 12 as metal and the damping sleeve 13 as rubber as an example, the first connecting portion 11 and the second connecting portion 12 can be fixedly connected with the damping sleeve 13 by using the affinity between metal and rubber.
The first connecting portion 11, the second connecting portion 12 and the damping sleeve 13 are made of different materials and have different connection firmness. In some embodiments, the damping sleeve is provided with openings on the first end surface and on the second end surface, wherein the first connection portion 11 and the second connection portion 12 are at least partially provided in the respective openings. In some embodiments, the first connecting portion 11 is disposed at least partially in the corresponding opening, and the second connecting portion 12 is disposed at least partially in the corresponding opening and provided with an external thread, which is used to enhance the connection strength between the two connecting portions and the damping sleeve 13, for example, rubber as the material of the damping sleeve 13 is attached to the root and the crest of the external thread.
In some embodiments, the damping sleeve 13 is provided with a notch at the opening position of the first end surface and a notch at the opening position of the second end surface, wherein the notch is used for conveniently tearing the damping sleeve 13 at the notch for replacement when the damping sleeve 13 is replaced and is difficult to remove due to aging or damage.
At least part of the first connection portion 11 is inserted in a corresponding opening of the damping sleeve 13; the second connecting portion 12 includes a base portion and a combining portion provided on the base portion, the combining portion has an external thread, the base portion is used for connecting the carrier, the combining portion is embedded in a corresponding opening of the damping sleeve 13, wherein a portion of the second connecting portion 12 embedded in the cavity is not connected with a portion of the first connecting portion 11 embedded in the cavity. At this time, the first connection portion 11 and the second connection portion 12 have a compressible space therebetween.
In some embodiments, the first connecting portion 11 and the second connecting portion 12 may be partially embedded in different cavities of the damping sleeve 13, respectively, and the cavities may be coaxial.
The joint part has a third section parallel to the plane, and the outer contour of the third section is constant along the direction departing from the base part or is reduced along the direction departing from the base part. The plane is a plane of the carrier, and is exemplarily a plane of the base plate 3 shown in fig. 1. Illustratively, the first connecting portion 11 is partially inserted into a corresponding opening of the damping sleeve 13, and partially extends out of the top end of the damping sleeve 13 for connecting the fixing portion 22. The joint part of the second connecting part 12 is embedded in the corresponding opening of the damping sleeve 13, while the base part of the second connecting part 12 is arranged at the bottom end of the damping sleeve 13 and is provided with an ear part for connection, and the ear part is arranged outside the bottom end of the damping sleeve 13, so that the connection with a carrier is convenient. When the damping sleeve 13 is made of rubber, the damping sleeve 13 can be connected with the first connecting portion 11 and the second connecting portion 12 respectively by adopting a vulcanization curing process, and the connection is firm.
In some embodiments, the connecting portion of the second connecting portion 12 may be a frustum shape with a certain taper, and the taper of the portion combined with the damping sleeve 13 is the same, so as to facilitate connection; illustratively, the connecting portion of the second connecting portion 12 is a columnar structure with a constant area, and accordingly, the portion of the damping sleeve 13 combined with the connecting portion of the second connecting portion 12 is also a columnar structure, which can support the damping sleeve 13 and enhance the structural stability of the whole damper 1.
In order to ensure high damping, low stiffness of the damping sleeve 13 and efficient absorption of the impact energy of the vibrations. For example: the damping sleeve 13 may be a cylindrical member, that is, the damping sleeve 13 defines 1 cavity surrounded by the cylindrical wall. In another embodiment, the damping sleeve 13 may be a solid member having a plurality of air-filled cavities therein. The structural composition of the two vibration damping sleeves 13 can effectively attenuate vibration, and the service life of the laser radar is ensured. It is understood that the frustum-shaped shape of the damping sleeve 13 is not limited to the frustum shape of a cone, but also includes a frustum-shaped member of a pyramid, and when the damping sleeve 13 is in the frustum shape of a pyramid, the cross section thereof is a polygonal structure, and the number of specific sides of the polygon is not limited in some embodiments.
The embodiment of the invention also provides an intelligent sensing device which comprises an intelligent sensing equipment assembly, wherein the intelligent sensing equipment assembly comprises intelligent sensing equipment, a fixing part and at least one shock absorber, the fixing part is used for installing the intelligent sensing equipment, the shock absorber is arranged on one side of the fixing part, which is far away from the intelligent sensing equipment, and the first connecting part of each shock absorber is connected with the fixing part.
Taking a laser radar device as an example, please refer to fig. 2 and fig. 4, the laser radar device includes a laser radar assembly 2, the laser radar assembly 2 includes a laser radar 21, a fixing portion 22 for mounting the laser radar 21, and a plurality of the shock absorbers 1, the shock absorbers 1 are disposed on a side of the fixing portion 22 away from the laser radar 21, and the first connecting portions 11 of the shock absorbers 1 are connected with the fixing portion 22; the centers 42 of the positions of the fixing portion 22 connected to the first connecting portion 11 are connected in sequence to form a polygon, and the geometric center 41 of the polygon coincides with the projection of the centroid of the lidar assembly 2 onto a plane where the vehicle has a connection with the second connecting portion, which is exemplarily the plane of the base plate 3 in fig. 1. The plurality of dampers 1 support the fixing portion 22 to which the laser radar 21 is mounted in common, and the laser radar 21 can be made more stable.
In order to optimize the damping effect, and a plurality of dampers are used for supporting and are uniformly stressed. Illustratively, the center of mass of lidar assembly 2 should coincide with geometric center 41, where geometric center 41 is: the centers 42 of the positions of the fixed portion 22 connected to the first connecting portion 11 are connected in sequence to form a polygon, and the geometric center of the polygon is the geometric center 41.
For example: referring to fig. 4, the number of the shock absorbers 1 is 4, the center points 42 of the positions where the first connecting portion 11 and the fixing portion 22 of each shock absorber are connected are sequentially connected to form a rectangle, and the intersection point of two diagonal lines of the rectangle is the geometric center 41. And the first connecting portions 11 of the respective dampers 1 are distributed outside the laser radar 21 at the positions of the fixing portions 22. It is understood that when the number of the dampers 1 is other, such as 2, 3, 5, 6, the first connecting portions 11 of the respective dampers 1 are also distributed outside the laser radar 21 at the positions of the fixing portions 22.
Considering that the laser radars have various specifications and different weights, and it is not practical that each laser radar component 2 is designed to have a constant mass center, the embodiment of the present invention adjusts the mass center of the laser radar component 2 to coincide with the geometric center 41 in the form of a counterweight. Referring to fig. 3 and 4, the weight portion 23 is detachably disposed on the fixing portion 22, and the mass center of the lidar assembly 2 can be adjusted by adjusting the weight of the weight portion 23 according to different weights of the lidar of different specifications without redesigning the fixing portion 22. The versatility of the fixing portion 22 for mounting the laser radar is enhanced.
In some embodiments, a bottom plate 3 is further disposed between the shock absorber 1 and the carrier, and the bottom plate 3 can provide a flat plane, so as to ensure that the stress of each shock absorber 1 is uniform. The use of the base plate 3 also facilitates the assembly of the lidar device prior to installation on the vehicle. Illustratively, each of the second connecting portions 12 of the shock absorbers 1 is connected to the base plate 3 by a bolt, and each of the first connecting portions 11 is connected to the fixing portion 22 by a bolt. The lug plate of the base portion of the second connecting portion 12 has a screw hole, and the base portion can be fixed to the base plate 3 by a bolt. The first connecting portion 11 has a screw hole, a portion of the screw hole protruding from the damping sleeve 13 is connected to the fixing portion 22, and the first connecting portion 11 and the fixing portion 22 are connected and fixed by a bolt. Through bolted connection, when the equipment laser radar device, because two connecting portion adopt the metal material, the bolt can be screwed up according to standard moment.
In some embodiments, as shown in fig. 1 and 3, the fixing portion 22 includes a support portion and an extending portion for mounting the harness clamp 24, wherein the harness clamp 24 is used for clamping the connection harness, the harness is connected to the lidar through the harness connector 25, and the harness clamp 24 is used to integrate the connection harness, the harness connector 25, the lidar and the fixing portion 22 into a whole without relative displacement, so as to ensure the reliability of the harness connector 25 and the stability of the mass center of the whole lidar assembly 2. The extending part is arranged on one side of the support part, which is far away from the counterweight part 23, namely the extending part extends in the direction far away from the counterweight part 23, and the far end of the extending part is provided with the linear speed pipe clamp 24, so that a certain interval can be ensured between the linear speed pipe clamp and the laser radar, and the connection of a wiring harness is facilitated. The extension part is arranged on one side opposite to the counterweight part, so that the counterweight part can effectively play a role in balancing the mass center.
In view of the fact that the wire harness clip 24 occupies a small space, in order to reduce the dead weight occupied by the extension portion, on the premise that the supporting strength is satisfied, the cross section of the extension portion is gradually reduced along the direction away from the support portion, for example, compared with a third end surface of the support portion, which is away from the counterweight portion, the area of a fourth end surface of the extension portion, which is close to the third end surface, is smaller, and a fifth end surface opposite to the fourth end surface is smaller than that of the fourth end surface, or an orthographic projection of the fifth end surface on the fourth end surface is located in the fourth end surface, and an orthographic projection of the fourth end surface on the third end surface is located in the third end surface. In some embodiments, the projection of the extension portion on the plane is an isosceles trapezoid, and it is understood that the projection of the extension portion on the plane may also be a right trapezoid or the like; the plane is a plane of the carrier connected with the second connecting part. The plane is a plane where the carrier has a connection with the second connection portion, and is exemplarily a plane of the base plate 3 in fig. 1.
In order to further reduce the weight of the extension portion, in some embodiments, one or more through holes are further formed in the middle of the extension portion, and when there is one through hole, the shape of the through hole is similar to the overall outline of the extension portion, for example, when the projection of the extension portion on the plane is an isosceles trapezoid, the shape of the through hole is also an isosceles trapezoid, so that the weight of the extension portion can be reduced maximally, and sufficient supporting strength is provided.
In some embodiments, the above-mentioned intelligent sensing device, for example, the lidar, is detachably disposed on the support portion, and the lidar is fixed on the support portion by a screw connection, for example, the lidar and the support portion are both provided with screw holes, and the two are fixedly connected by screws, so that the lidar can be conveniently replaced.
In some embodiments, the orthographic projection of the support part on the plane is polygonal, circular and the like, exemplarily the polygon is a rectangle, a pentagon, a hexagon and the like, the support part is not only used for fixing the laser radar, but also connected with the counterweight part 23 and the shock absorber 1, the regular outline shape is favorable for the arrangement of each connecting part, and then the mass center is easily adjusted, so that the stress of each shock absorber is uniform, the stability of the shock absorber is improved, and the service life of the laser radar is prolonged.
FIG. 5 is a schematic diagram showing a comparison of acceleration input and output curves of an additive shock absorber according to an embodiment of the present invention, wherein the in-line is an input curve of 40G shock acceleration and the action time is 6ms; the out line is an acceleration output curve applied to the laser radar component provided with the shock absorber, and through comparison of the two curves, the output is 10g +/-3 g after the shock absorber attenuates, so that the shock absorption requirement of the laser radar is completely met.
The embodiment of the invention also provides a carrier, which comprises the intelligent sensing device; the intelligent sensing device is detachably connected with the carrier through the second connecting portion. It is understood that the vehicle includes not only vehicles, but also other transportation vehicles such as robots, trains, ships, and the like. The vehicle not only comprises an unmanned vehicle, but also comprises a manned vehicle, and not only comprises a household vehicle, but also comprises various engineering vehicles, such as an off-highway wide body vehicle, a loader, an excavator and the like.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of description and are not intended to limit the scope of the invention. It will be apparent to those skilled in the art that other variations or modifications may be made on the above invention and still be within the scope of the invention.

Claims (18)

1. A shock absorber is characterized by comprising a shock absorbing sleeve, a first connecting part and a second connecting part, wherein the hardness of the materials of the first connecting part and the second connecting part is greater than that of the materials of the shock absorbing sleeve;
the first connecting part is positioned at one end of the vibration damping sleeve and is used for connecting a fixing part of the intelligent sensing equipment;
the second connecting part is positioned at the other end of the damping sleeve and is used for detachably connecting a carrier for bearing the intelligent sensing equipment;
the damping sleeve is provided with a first end face close to the first connecting portion and a second end face close to the second connecting portion, and the area of the first end face is smaller than that of the second end face.
2. The shock absorber according to claim 1, wherein an orthographic projection of said first end surface at said second end surface is located within said second end surface.
3. A damper according to claim 1 or 2, wherein the centre of the orthographic projection of said first end face on said second end face coincides with the centre of said second end face.
4. A damper according to claim 1 or 2, characterized in that the first connection portion, the second connection portion and the damping bushing are each connected to each other in a snug manner.
5. A damper according to claim 4, characterized in that the damping bushing has an opening in the first end face and/or the second end face, the first connection portion and/or the second connection portion being at least partially provided in the respective opening.
6. The damper according to claim 5, characterized in that the damper sleeve has a cutout at the location of the opening in the first end face and/or at the location of the opening in the second end face.
7. Shock absorber according to claim 5, wherein the first and/or second connection portion is provided with an external thread at the location in the respective opening for increasing the connection force between the first and/or second connection portion and the damping sleeve.
8. The damper according to claim 7, wherein the second connecting portion includes a base portion for connecting the carrier and a joining portion that is embedded in the corresponding opening, the joining portion having an external thread.
9. The shock absorber according to claim 1,
the damping sleeve is made of one of rubber, polyurethane and engineering plastics;
the material of the first connecting part and/or the material of the second connecting part are one of metal and engineering plastics.
10. An intelligent sensing device, comprising an intelligent sensing device assembly, wherein the intelligent sensing device assembly comprises an intelligent sensing device and a fixing part for mounting the intelligent sensing device, and at least one vibration damper according to any one of claims 1 to 9, the vibration damper is arranged on a side of the fixing part, which faces away from the intelligent sensing device, and the first connecting part of each vibration damper is connected with the fixing part.
11. The intelligent sensor apparatus according to claim 10, wherein the centers of the fixed portion connected to the first connecting portion are sequentially connected to form a polygon, the carrier has a plane connected to the second connecting portion, and the geometric center of the polygon coincides with the projection of the centroid of the intelligent sensor device assembly onto the plane.
12. The intelligent sensor device according to claim 10, wherein the number of the vibration dampers is four, the central points of the fixing portions connected to the first connecting portions are sequentially connected to form a rectangle, and the positions where the first connecting portions of the vibration dampers are connected to the fixing portions are distributed on the outer side of the intelligent sensor apparatus.
13. The intelligent sensor device according to claim 10, further comprising a weight portion, wherein the weight portion is detachably disposed on the fixing portion, and the weight portion is used for enabling the dampers to be stressed the same.
14. The intelligent sensor device according to claim 13, further comprising a clamping portion for fixing a wiring harness, wherein the fixing portion comprises a support portion and an extension portion for mounting the clamping portion, and the extension portion is provided on a side of the support portion facing away from the weight portion;
the support part is provided with a third end surface facing away from the counterweight part, the extension part is provided with a fourth end surface close to the third end surface and a fifth end surface opposite to the fourth end surface, the orthographic projection of the fifth end surface on the fourth end surface is positioned in the fourth end surface, and the orthographic projection of the fourth end surface on the third end surface is positioned in the third end surface;
the clamping part is arranged at the part of the extending part, which is close to the fifth end surface.
15. The intelligent sensing device according to claim 14, wherein at least one through hole for weight reduction is opened at a portion of the extension portion near the middle.
16. The intelligent sensing apparatus according to claim 14, wherein the intelligent sensing device is detachably provided on the stand portion; and/or the presence of a gas in the gas,
the carrier is provided with a plane connected with the second connecting part, and the orthographic projection of the support part on the plane is a polygon.
17. The intelligent sensing apparatus of claim 10, wherein the intelligent sensing device is one of a laser radar, a video capture sensor, and an infrared sensor.
18. A vehicle, characterized by comprising the smart sensor device according to any one of claims 10-17; the intelligent sensing device is detachably connected with the carrier through the second connecting part.
CN202211185023.5A 2022-09-27 2022-09-27 Shock absorber, intelligent sensing device and carrier Pending CN115574029A (en)

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