CN219712177U

CN219712177U - Vibration damper, vibration damping system and carrier

Info

Publication number: CN219712177U
Application number: CN202320345460.2U
Authority: CN
Inventors: 纪柯
Original assignee: Beijing Yikong Zhijia Technology Co Ltd
Current assignee: Beijing Yikong Zhijia Technology Co Ltd
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-09-19
Anticipated expiration: 2033-02-17

Abstract

The utility model provides a vibration damper, a vibration damping system and a carrier, relates to the field of vehicles, and aims to solve the technical problem of how to improve the structural reliability of vehicle parts under a vibration working condition. The vibration damping device comprises a shell, a base and a first vibration damping structure arranged between the shell and the base; the shell encloses a containing space for containing a vibration reduction object, and a second vibration reduction structure is arranged between the vibration reduction object and the shell; the first vibration reduction structure is used for reducing vibration signals of a low frequency band, and the second vibration reduction structure is used for reducing vibration signals of a high frequency band. According to the vibration damping device, through the cooperation of the spiral spring vibration damper and the rubber vibration damping pad, the vibration load borne by a vibration damping object is minimized, so that the structural reliability of the vibration damping object and the shell is improved. The vibration damper is used for vibration damping of parts of the new energy mine car.

Description

Vibration damper, vibration damping system and carrier

Technical Field

The utility model relates to the field of vehicles, in particular to a vibration damping device, a vibration damping system and a carrier.

Background

Because the road on which the vehicle runs is complex and changeable, the operation working conditions have larger difference, and therefore, the failure rate of part of parts in the vehicle is higher. In new energy vehicles, more and more high-value parts are provided, and poor structural reliability can lead to low vehicle attendance and poor operation efficiency.

Under the condition of severe vibration conditions, how to effectively damp vibration of parts in a vehicle so as to improve the structural reliability of the parts is increasingly concerned.

Disclosure of Invention

The utility model aims to provide a vibration damper, a vibration damping system and a carrier, so as to solve the technical problem of how to improve the structural reliability of vehicle parts under the vibration working condition.

In order to achieve the above object, the present utility model provides the following technical solutions:

in a first aspect, an embodiment of the present utility model provides a vibration damping device for damping a vibration damping object, where the vibration damping device includes a housing, a base, and a first vibration damping structure disposed between the housing and the base;

the shell encloses a containing space for containing the vibration reduction object, and a second vibration reduction structure is arranged between the vibration reduction object and the shell;

the first vibration reduction structure is used for reducing vibration signals of a low frequency band, and the second vibration reduction structure is used for reducing vibration signals of a high frequency band.

According to at least one embodiment of the utility model, the resonance frequency of the second vibration reduction structure is smaller than at least part of the vibration excitation frequencies.

According to at least one embodiment of the present utility model, the vibration damping device further comprises at least one fixing structure for fixing the vibration damping object within the housing;

the second vibration reduction structure comprises at least one second vibration reduction part, and each second vibration reduction part is positioned in the area of the corresponding fixed structure.

According to at least one embodiment of the present utility model, the vibration damping device further includes a plurality of support beams provided in the housing, one side of the support beams facing away from the bottom surface of the housing being used for supporting the vibration damping object;

the vibration reduction objects are fixedly connected to the corresponding supporting beams through the at least one fixing structure and the corresponding second vibration reduction parts;

each supporting beam is arranged in parallel with the bottom surface of the shell.

According to at least one embodiment of the present utility model, each of the fixing structures includes at least a connecting member and a locking device, and each of the second vibration reducing portions has a through hole through which the connecting member passes;

the second vibration reduction parts are arranged between the vibration reduction object and the supporting beam and on one side of the supporting beam away from the vibration reduction object in each area of the fixed structure; the vibration reduction object and the two second vibration reduction parts are connected with the supporting beam through the connecting piece and the locking device.

According to at least one embodiment of the present utility model, the first vibration damping structure includes a plurality of first vibration damping portions, and the plurality of first vibration damping portions are uniformly distributed on an outer wall surface of the housing facing the base.

According to at least one embodiment of the present utility model, the second vibration damping portion includes a rubber vibration damping pad; and/or the number of the groups of groups,

the first vibration reduction part comprises one of a spiral spring vibration absorber and an inflatable vibration absorber;

when the first vibration reduction part is a spiral spring vibration reduction device, the central axis of a spiral spring of the spiral spring vibration reduction device is perpendicular to the base.

In one or more technical solutions provided in exemplary embodiments of the present utility model, a vibration damping device includes a housing and a base, a first vibration damping structure for reducing a vibration signal of a low frequency band is disposed between the housing and the base, and a second vibration damping structure for reducing a vibration signal of a high frequency band is disposed between a vibration damping object and the housing, wherein the vibration damping object is disposed in a receiving space inside the housing. The excitation vibration signals from the base are transmitted to the shell through the first vibration reduction structure, and then transmitted to the vibration reduction object through the second vibration reduction structure, and the two-stage vibration reduction devices are combined to form a complete vibration reduction system, so that the vibration signals of all frequency bands in the excitation vibration can be reduced. Thereby reducing the influence of vibration load on the reliability of the vibration reduction object and the shell structure, and prolonging the service life of the vibration reduction object.

In a second aspect, the present utility model further provides a vibration damping system, including a vibration damping object and the vibration damping device according to the first aspect, where the vibration damping object is disposed on the base through the vibration damping device.

According to at least one embodiment of the present utility model, the number of the vibration reduction objects is plural, and the second vibration reduction structure is provided between each vibration reduction object and the corresponding support beam;

each vibration reduction object is distributed along a direction away from the bottom surface of the shell.

In a third aspect, the present utility model further provides a carrier, including a chassis, and a vehicle body, a power device, and an electrical device respectively disposed on the chassis;

at least one of the power plant, the electrical plant, the vehicle body, and the chassis includes the vibration reduction system of the second aspect.

The advantages of the vibration damping system and the carrier compared with the prior art are the same as those of the vibration damping device provided in the first aspect compared with the prior art, and are not described in detail herein.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model.

FIG. 1 is a schematic view of a vibration damping device according to an embodiment of the present utility model.

Reference numerals: 10. a second vibration damping portion; 20. a first vibration damping portion; 30. a power battery box; 40. a housing; 41. a support beam; 50. a base.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the substances, and not restrictive of the utility model. It should be further noted that, for convenience of description, only the portions related to the present utility model are shown in the drawings.

In the description of the present specification, when an element is referred to as being "fixed" 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 "upper," "lower," "front," "rear," "left," "right," and the like indicate an orientation or positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present specification, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the embodiments of the present utility model and the features of the embodiments may be combined with each other without collision. The present utility model will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The new energy mine car adopts a high-value power battery as a power source, and the reliability of the power battery influences the car cost of customers. In particular, the mine car runs on mine roads with severe road conditions and complex and changeable roads, and has higher failure rate, wherein the problems of the structure type are most prominent.

In the related art, the battery is used as a core part of the new energy mine car, the vibration working condition of the battery is bad, and the service life of the battery is difficult to effectively improve.

The present utility model provides a vibration damping device, where the vibration damping object may be a power battery box, a power battery module, or the like, or may be an intelligent sensing device, such as a laser radar, a camera, or other sensors for sensing the surrounding environment, and the like, which is not limited herein.

Fig. 1 shows a schematic structural view of a vibration damping device according to an exemplary embodiment of the present utility model. As shown in fig. 1, the vibration damping device includes a housing 40, a base 50, and a first vibration damping structure provided between the housing 40 and the base 50, and a second vibration damping structure provided between a vibration damping object and the housing 40. The power battery box 30 is described below as an example, but it should not be construed that the vibration damping object is limited thereto.

As shown in fig. 1, the housing 40 encloses a space for accommodating the power battery box 30, and the housing 40 may be a closed structure to isolate the power battery box 30 from the environment outside the housing 40, so as to protect the power battery box 30 from the humid air, dust, etc.; or may be a semi-closed structure, a frame structure, etc. to facilitate heat dissipation of the power battery box 30.

As shown in fig. 1, the base 50 may be a frame, a suspension, a vehicle girder, or the like. The base 50 is described below by taking a frame as an example, but it should not be understood that the base 50 is limited thereto.

In practice, as shown in fig. 1, the vibration damping device is mounted on an excitation vibration source, such as an excitation source from an engine, or a vibration signal generated when a road jolts, through a base 50, and is first transferred to a first vibration damping structure through a frame of a vehicle, and the first vibration damping structure mainly reduces a low-frequency excitation signal so that energy is attenuated when the low-frequency excitation signal reaches a housing 40. The vibration signal is continuously transmitted to the power battery box through the second vibration reduction structure, and the second vibration reduction structure mainly reduces the high-frequency excitation signal, so that the vibration energy of the excitation signal in the full frequency range is quickly attenuated under the combined action of the two-stage vibration reduction structure when the vibration energy is transmitted to the power battery box 30 from bottom to top. Therefore, the influence of vibration load on the reliability of the power battery box 30 and the shell 40 is greatly reduced, and the service life of the power battery box 30 is further prolonged.

It is understood that in the field of traffic vehicles, the frequency band of the excitation signal is mainly 5Hz to 200Hz, wherein the vibration signal in the low frequency band is exemplified by the frequency of 5Hz to 50Hz, and the vibration signal in the high frequency band is exemplified by the frequency of 50Hz to 200 Hz.

The resonance frequency of the second vibration reduction structure is, for example, smaller than at least part of the vibration excitation frequencies.

For example, the resonance frequency of the second vibration reduction structure is less than 50Hz, and when the excitation vibration signal of the high frequency band passes through the second vibration reduction structure, the excitation signal can be rapidly attenuated because the frequency of the excitation vibration signal is greater than the resonance frequency of the second vibration reduction structure. The synergistic effect of the second vibration reduction structure and the first vibration reduction structure reduces the vibration energy transmitted to the power battery box 30 from bottom to top, thereby improving the reliability of the power battery box 30 and prolonging the service life.

In some embodiments, the vibration damping device further comprises at least one securing structure for securing the power cell box 30 within the housing 40; the second vibration damping structure comprises at least one second vibration damping portion 10, each second vibration damping portion 10 being located in the region of the respective fixed structure.

As shown in fig. 1, the power battery box 30 is fixed in the housing 40 by using a fixing structure, and the number of the fixing structures is adjusted according to the actual requirement of the power battery box 30, which is not limited herein.

For example, a plurality of fixing structures may be uniformly or unevenly disposed along one direction of the power cell case 30 to be fixed in the housing 40. Accordingly, a second vibration damper 10 is provided in the region of each fastening structure. It should be understood that the second vibration damping portion 10 should be provided at least between the power battery case 30 and the housing 40 such that the power battery case 30 is not in direct contact with the housing 40. For example, the second vibration damping portion 10 is provided below the power cell box 30 to damp vibration energy transmitted from the housing 40.

In an alternative embodiment, the second vibration reducing portion 10 is attached to the bottom surface of the power cell case 30 such that the second vibration reducing portion 10 is not directly contacted with the housing 40 at all. Alternatively, when the contact surface between the power battery case 30 and the housing is in the form of a bar, the second vibration reduction portion 10 may be provided on the contact surface between the power battery case 30 and the housing. As described above, the second damper portion 10 may be a strip-shaped, planar or columnar damper portion.

In view of heat dissipation between the power battery box 30 and the housing 40 and convenience in assembly and disassembly, the vibration damping device further comprises a plurality of support beams 41 arranged in the housing 40, wherein one side of the support beams 41 away from the bottom surface of the housing 40 is used for supporting the power battery box 30; the power battery box 30 is fixedly connected to the corresponding support beam 41 through at least one fixing structure and the corresponding second vibration reduction portion 10; each support beam 41 is disposed in parallel with the bottom surface of the housing 40.

In practice, the plurality of support beams 41 may be divided into a plurality of groups, each group of support beams 40 constituting a frame structure supporting the power cell box 30, and the power cell box 30 being fixed above the corresponding support beam 41 by the fixing structure and the second vibration reduction portion 10. For example, each set of support beams 41 includes two, two support beams 41 disposed in parallel on both side areas of the power cell box 30, each side of the power cell box 30 being supported on one support beam 41. In this arrangement, the power battery box 30 is directly fixed to the housing 40, so that the assembly and disassembly are more convenient, and the heat dissipation is good. It should be understood that each set of support beams 41 may be three, four or more support beams to support the power cell box 30 according to actual needs, for example, when the power cell box 30 is a rectangular parallelepiped, four support beams 41 are provided at four side positions of the power cell box 30, each support beam 41 being for supporting and fixing one side of the power cell box 30.

Further, as shown in fig. 1, in the height direction of the housing 40, a plurality of groups of support beams 41 are provided, and a plurality of power battery boxes 30 can be placed in the same housing 40, so that the number of power battery boxes can be more satisfied. It should be appreciated that a plurality of power battery boxes 30 may be disposed in the housing 40 at intervals or in close proximity according to the actual heat dissipation requirement, wherein the power battery boxes 30 disposed at intervals dissipate heat better, and the power battery boxes 30 disposed in close proximity may save space, thereby reducing the structure of the housing 40, and thus the weight of the entire vibration damping device.

The fixing structure may be of various forms, and may be fixed by bolting, riveting, or welding, for example, so as to satisfy the fixing strength between the power battery box 30 and the support beam 41. Of course, the functions of the fixing structure of the exemplary embodiment of the present utility model may also be implemented by other structures.

For example, as shown in fig. 1, each fixing structure of the exemplary embodiment of the present utility model includes at least a connector and a locking device, and each second vibration damping portion 10 has a through hole through which the connector passes; in the area of each fixed structure, a second vibration reduction part 10 is arranged between the power battery box 30 and the supporting beam 41 and on one side of the supporting beam 41 away from the power battery box 30; the power battery box 30 and the two second vibration reduction parts 10 are connected to the support beam 41 by a connector and a locking device.

The connecting member may be a bolt, a screw, or a rivet, and in the case of the connecting member being a bolt, the locking device may be a nut engaged with the bolt, the nut being used to connect the second vibration damping portion 10, the support beam 41, and the power cell case 30 together through the bolt.

Specifically, each of the second vibration reducing portions 10 has a through hole thereon for the passage of a bolt. Through holes for the bolts to pass through are also formed in the bottom surface of the power battery box 30 or in the lug plate extending outward near the bottom surface, and through holes for the bolts to pass through are also formed in the corresponding positions of the support beam 41, and in each fixing region, the bolts sequentially penetrate through the fixing portion of the power battery box 30, the second vibration damping portion 10, the support beam 41, and the other second vibration damping portion 10, and are fixed by nuts. So that there is no rigid contact between the power battery box 30 and the support beam 41, all connected by the second vibration reduction portion 10. The above-described embodiment using two second vibration reduction parts 10 has a better vibration reduction effect than the case where the bolts sequentially penetrate the fixing part of the power battery box 30, the second vibration reduction parts 10, and the support beam 41 in each fixing region and are fixed by nuts, thereby reducing the use of one second vibration reduction part 10.

In addition, the second vibration reduction part 10 is provided with a through hole so as to be arranged at a fixed position of the power battery box 30 on the supporting beam 41, and the second vibration reduction part 10 is positioned and fixed to prevent vibration reduction failure caused by displacement in the process of exciting vibration.

In some embodiments, the second vibration reducing portion 10 includes a rubber vibration reducing pad, which is not to be understood as a spacer, and may be in the form of a rubber vibration reducing sleeve, for example, a columnar structure made of rubber, and a through hole is provided at a central axis of the columnar structure to be sleeved on the bolt.

Illustratively, the first vibration reducing structure includes a plurality of first vibration reducing portions 20, and the plurality of first vibration reducing portions 20 are uniformly distributed on an outer wall surface of the housing 40 facing the base 50.

For example, the first vibration damping portion 20 may be a coil spring vibration damper or an air-filled vibration damper, wherein the coil spring vibration damper includes a damping cylinder and a coil spring sleeved outside the damping cylinder, and the damping cylinder may use a hydraulic damping element. It should be appreciated that the inflatable shock absorber also has shock absorbing properties similar to a coil spring shock absorber.

Illustratively, the central axis of the first vibration damping portion 20 should be perpendicular to the base 50 to maximize attenuation of the low frequency band signal of the excitation vibration signal with the vibration damping structure. When the first vibration reducing portion 20 is a coil spring vibration absorber, the coil spring vibration absorber has a center axis of a coil spring perpendicular to the base 50.

In practical applications, as shown in fig. 1, a plurality of spiral spring dampers are distributed between the base 50 and the power battery box 30, and the distribution of the spiral spring dampers may be uniformly arranged along the bottom surface of the housing 40 in a determinant form or in a concentric circle form, and the two arrangements may attenuate the energy of the excitation vibration signal to the greatest extent.

The exemplary embodiment of the present utility model also provides a vibration damping system including the power battery box 30 and the vibration damping device described above, the power battery box 30 being provided on the base 50 through the vibration damping device.

In practical applications, the vibration damper is disposed on the base 50, the base 50 may be a power device, an electric device, a vehicle body, a chassis, or a vehicle frame, or the base 50 may be a planar plate structure, and the planar plate structure is fixed at a top position of one of the power device, the electric device, the vehicle body, the chassis, or the vehicle frame. The power battery box 30 is disposed in a housing 40 of the vibration damping device.

In an alternative embodiment, the number of the power battery boxes 30 may be plural, and each power battery box 30 is distributed in a direction away from the bottom surface of the housing 40, that is, in a direction away from the bottom surface of the housing 40, a plurality of support beams 41 are provided in the housing 40, a rubber cushion is provided above the corresponding support beam 41, and the power battery box 30 is provided on the rubber cushion.

The vibration signal transmitted from the lower part of the vibration reduction system is firstly attenuated by the spiral spring vibration absorber and then transmitted to the shell 40, and then attenuated by the rubber vibration absorber and then transmitted to the power battery box 30, and the spiral spring vibration absorber and the rubber vibration absorber are matched for use, so that the vibration load born by the power battery box 30 is minimized. The service lives of the power battery box 30 and the housing 40 are prolonged to the greatest extent.

The exemplary embodiment of the utility model also provides a carrier, which comprises a chassis, and a vehicle body, a power device and an electric device which are respectively arranged on the chassis; at least one of the power plant, the electrical plant, the vehicle body and the chassis comprises the vibration reduction system.

The carrier provided by the exemplary embodiment of the utility model can be a traditional energy vehicle or a new energy vehicle, including a new energy vehicle, a new energy truck and a new energy mine car, and is not limited herein.

According to one or more technical schemes provided by the embodiment of the utility model, the rubber vibration damping pad is added between the power battery box and the shell, the spiral spring vibration damper is added between the shell and the base, and the two vibration damping units are combined into the vibration damping device to respectively attenuate high-frequency band signals and low-frequency band signals of excitation vibration, so that the vibration load to the power battery box and the shell in the running process of a vehicle is reduced, the structural reliability of the power battery box and the shell is improved, and the service life of the power battery box and the shell is prolonged.

In the description of the present specification, reference to the terms "one embodiment/manner," "some embodiments/manner," "example," "a particular example," "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/manner or example is included in at least one embodiment/manner or example of the utility model. In this specification, the schematic representations of the above terms are not necessarily for the same embodiment/manner 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/modes or examples described in this specification and the features of the various embodiments/modes or examples can be combined and combined by persons skilled in the art without contradiction.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

It will be appreciated by persons skilled in the art that the above embodiments are provided for clarity of illustration only and are not intended to limit the scope of the utility model. Other variations or modifications will be apparent to persons skilled in the art from the foregoing disclosure, and such variations or modifications are intended to be within the scope of the present utility model.

Claims

1. A vibration damping device, characterized in that the vibration damping device is used for damping vibration of a vibration damping object and comprises a shell, a base and a first vibration damping structure arranged between the shell and the base;

2. The vibration damping device according to claim 1, wherein the resonance frequency of the second vibration damping structure is less than at least part of the vibration excitation frequencies.

3. Damping device according to claim 1 or 2, characterized in that the damping device further comprises at least one fixation structure for fixation of the damping object within the housing;

4. A vibration damping device according to claim 3, further comprising a plurality of support beams provided in the housing, a side of the support beams facing away from the bottom surface of the housing for supporting the vibration damping object;

5. The vibration damping device according to claim 4, wherein each of the fixing structures includes at least a connecting member and a locking device, and each of the second vibration damping portions has a through hole through which the connecting member passes;

6. A vibration damping device according to claim 3, wherein the first vibration damping structure comprises a plurality of first vibration damping portions uniformly distributed on an outer wall surface of the housing facing the base.

7. The vibration damping device of claim 6, wherein the second vibration damping portion comprises a rubber vibration damping pad; and/or the number of the groups of groups,

8. A vibration damping system comprising a vibration damping object and a vibration damping device according to any one of claims 1 to 7, the vibration damping object being provided on the base by the vibration damping device.

9. The vibration reduction system according to claim 8, wherein the number of vibration reduction objects is plural, the second vibration reduction structure being provided between each vibration reduction object and the corresponding support beam;

10. The carrier is characterized by comprising a chassis, and a vehicle body, a power device and an electric device which are respectively arranged on the chassis;

at least one of the power plant, the electrical plant, the vehicle body, the chassis comprises a vibration damping system according to claim 8 or 9.