阅读说明：本技术 一种驾驶室悬置装置 (Cab suspension device ) 是由 王淼 黄森 高军委 史季青 种刚 于 2019-04-19 设计创作，主要内容包括：本发明涉及一种驾驶室悬置装置,所述驾驶室悬置装置包括上支架、下支架和磁流变阻尼器,所述上支架的底板的上表面周期性布置有一组第一声子晶体,所述下支架的安装孔的内部设有一组由金属环和非金属环形成的第二声子晶体,所述上支架和所述下支架通过销轴、所述磁流变阻尼器连接在一起。根据本发明提供的一种驾驶室悬置装置,具备主动隔振以及声子晶体带隙阻隔振动和噪声的特性,可以有效降低通过驾驶室悬置装置传递的振动和噪声,为提升驾驶室的隔振性能起到重要作用。(The invention relates to a cab suspension device which comprises an upper support, a lower support and a magneto-rheological damper, wherein a group of first phononic crystals are periodically arranged on the upper surface of a bottom plate of the upper support, a group of second phononic crystals formed by metal rings and nonmetal rings are arranged in mounting holes of the lower support, and the upper support and the lower support are connected together through a pin shaft and the magneto-rheological damper. The cab suspension device provided by the invention has the characteristics of active vibration isolation and phononic crystal band gap vibration and noise isolation, can effectively reduce vibration and noise transmitted through the cab suspension device, and plays an important role in improving the vibration isolation performance of a cab.)

1. A cab suspension arrangement, the cab suspension arrangement comprising: an upper bracket and a lower bracket are arranged on the upper bracket,

the method is characterized in that:

the damper is a magnetorheological damper, and a first connecting hole and a second connecting hole are respectively formed in two ends of the magnetorheological damper;

the upper bracket comprises a bottom plate and side plates, and a group of first phononic crystals are periodically arranged on the upper surface of the bottom plate;

the outer side of the side plate is provided with a third connecting hole, and the lower part of the bottom plate is provided with a fourth connecting hole;

a fifth connecting hole and a mounting hole are formed in the lower support, and a group of second photonic crystals formed by metal rings and nonmetal rings are arranged in the mounting hole;

the upper support and the lower support are connected through the fourth connecting hole and the mounting hole, the magnetorheological damper and the upper support are connected through the first connecting hole and the third connecting hole, and the magnetorheological damper and the lower support are connected through the second connecting hole and the fifth connecting hole.

2. The cab suspension of claim 1, wherein the first phononic crystal is comprised of an aluminum alloy block and rubber, the aluminum alloy block being a cylindrical aluminum alloy block.

3. The cab suspension device according to claim 1, wherein the second photonic crystal is a periodic structure formed by the metal ring and the non-metal ring, and includes a first metal ring layer, a second metal ring layer, a third metal ring layer, a first non-metal ring layer, a second non-metal ring layer and a third non-metal ring layer, the first non-metal ring layer, the second non-metal ring layer, the third metal ring layer and the third non-metal ring layer are sequentially arranged from inside to outside along the radial direction of the mounting hole to form the second photonic crystal, and the inside of the first metal ring layer is connected with the rubber bushing.

4. A cab suspension according to claim 1 or 3, wherein the metal ring is made of steel, copper or an alloy.

5. A cab suspension according to claim 1 or 3, wherein the non-metallic ring is made of nylon, polymer composite, rubber or piezo-electric composite.

6. The cab suspension of claim 1, wherein the fourth attachment hole and the mounting hole are connected by a pin.

Technical Field

The invention belongs to the technical field of vibration isolation and noise reduction of vehicles, and particularly relates to a suspension device for a cab of a commercial vehicle.

Background

The cab suspension is an important part for connecting the vehicle body and the vehicle frame, the vibration in the vehicle running process can be transmitted to the inside of the cab through the cab suspension to influence the driving comfort, and the smoothness of the whole vehicle is directly influenced by the quality of the vibration isolation performance of the cab suspension.

The traditional cab suspension directly adopts rubber for vibration reduction, and cannot realize the functions of active vibration isolation and energy recovery, and the magneto-rheological and photonic crystal technologies are taken as emerging vibration isolation technologies, and the direct application of the magneto-rheological and photonic crystal technologies can realize active vibration isolation and noise reduction.

Disclosure of Invention

The present invention is made to solve the above problems, and an object of the present invention is to provide a cab suspension apparatus, which improves vibration isolation and noise reduction capabilities of a cab suspension, thereby improving comfort of a vehicle.

In order to achieve the above object, the present invention provides a cab suspension device, comprising an upper bracket, a lower bracket and a damper; the damper is a magnetorheological damper, and a first connecting hole and a second connecting hole are respectively formed in two ends of the magnetorheological damper; the upper bracket comprises a bottom plate and a side plate, a group of phononic crystals are periodically arranged on the upper surface of the bottom plate, the phononic crystals are called first phononic crystals, a third connecting hole is formed in the outer side of the side plate, and a fourth connecting hole is formed in the lower portion of the bottom plate; the lower support is provided with a fifth connecting hole and a mounting hole, a group of phononic crystals formed by metal rings and nonmetal rings are arranged in the mounting hole, and the phononic crystals are called as second phononic crystals; the upper support and the lower support are connected through the fourth connecting hole and the mounting hole, the magnetorheological damper and the upper support are connected through the first connecting hole and the third connecting hole, and the magnetorheological damper and the lower support are connected through the second connecting hole and the fifth connecting hole.

Preferably, the first phononic crystal is composed of an aluminum alloy block and rubber, and the aluminum alloy block is a cylindrical aluminum alloy block.

Preferably, the second photonic crystal is by the periodic structure that becket and non-metallic ring formed, including first layer becket, second floor becket, third layer becket, the non-metallic ring of first layer, the non-metallic ring of second floor and the non-metallic ring of third layer, first layer becket, the non-metallic ring of first layer, second floor becket, the non-metallic ring of second floor, the non-metallic ring of third layer and the non-metallic ring of third layer are followed the radial formation that sets gradually from inside to outside of mounting hole the second photonic crystal, the inside and the rubber shaft bushing of first layer becket.

Preferably, the metal ring is made of steel, copper or an alloy.

Preferably, the non-metallic ring is made of nylon, polymer composite, rubber or piezo-electric composite.

Preferably, the fourth connecting hole and the mounting hole are connected by a pin.

The invention provides a cab suspension device, which is a photonic crystal cab suspension device provided with a magnetorheological damper, and has the functions of active vibration isolation and power generation and the function of vibration energy recovery, wherein the magnetorheological damper is used for realizing active vibration isolation, and the photonic crystal band gap effect is used for realizing effective conduction isolation of specific frequency, so that the vibration and noise transmitted by the cab suspension device can be effectively reduced, and an important function is played for improving the vibration isolation performance of a cab; the suspension device of the cab is directly changed on the traditional suspension device of the cab, and the universality is strong.

Drawings

Fig. 1 is a schematic structural diagram of a cab suspension device provided by the invention.

Fig. 2 is a schematic perspective view of a lower bracket of a cab suspension device according to the present invention.

Fig. 3 is a front view of a lower bracket of a cab suspension apparatus according to the present invention.

Fig. 4 is a sectional view taken along line a-a in fig. 3.

Fig. 5 is a schematic structural diagram of a phononic crystal portion of an upper bracket of a cab suspension apparatus provided by the present invention.

Description of the reference numerals

1 magnetorheological damper 11 first connection hole

12 second connecting hole 2 upper bracket

21 third connection hole 22 fourth connection hole

23 first phononic crystal 231 aluminum alloy block

232 rubber 3 lower support

31 fifth connecting hole 32 mounting hole

33 second photonic crystal 331 first layer metal ring

332 first layer non-metallic ring 333 second layer metallic ring

334 second layer non-metallic ring 335 third layer metallic ring

336 third layer 34 rubber sleeve with non-metal ring

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In explaining the embodiments of the present invention, if a detailed description of related well-known elements or functions obstructs the gist of the present invention, a detailed description thereof will be omitted.

Referring to fig. 1 to 5, the present invention provides a cab suspension apparatus including an upper bracket 2, a lower bracket 3, and a damper; the damper is a magnetorheological damper 1, after the magnetorheological damper 1 is powered on, the damping characteristic of the damper can be changed by adjusting the power supply voltage, and a first connecting hole 11 and a second connecting hole 12 are respectively formed in two ends of the magnetorheological damper 1; the upper support 2 comprises a bottom plate and a side plate, a group of phononic crystals are periodically arranged on the upper surface of the bottom plate, the phononic crystals are called as first phononic crystals 23, the array spacing and the material parameters can be adjusted according to different load sizes and geometric dimensions, a third connecting hole 21 is formed in the outer side of the side plate, and a fourth connecting hole 22 is formed in the lower portion of the bottom plate; a fifth connecting hole 31 and a mounting hole 32 are formed in the lower support 3, a group of phononic crystals formed by metal rings and nonmetal rings are arranged in the mounting hole 32, and the phononic crystals are called as second phononic crystals 33; the upper support 2 and the lower support 3 are connected through the fourth connecting hole 22 and the mounting hole 32, the magnetorheological damper 1 and the upper support 2 are connected through the first connecting hole 11 and the third connecting hole 21, and the magnetorheological damper 1 and the lower support 3 are connected through the second connecting hole 12 and the fifth connecting hole 31.

The first phononic crystal 23 is composed of an aluminum alloy block 231 and rubber 232, the aluminum alloy block 231 is a cylindrical aluminum alloy block, and the cutoff frequency can be changed by changing the distance between the aluminum alloy blocks 231 and the thickness of the rubber 232.

The second photonic crystal 33 is a periodic structure formed by the metal rings and the nonmetal rings (the array spacing and the material parameters can be adjusted according to the difference of the load size and the geometric dimension), and includes a first layer metal ring 331, a second layer metal ring 333, a third layer metal ring 335, a first layer nonmetal ring 332, a second layer nonmetal ring 334 and a third layer nonmetal ring 336, wherein the first layer metal ring 331, the first layer nonmetal ring 332, the second layer metal ring 333, the second layer nonmetal ring 334, the third layer metal ring 335 and the third layer nonmetal ring 336 are sequentially arranged from inside to outside along the radial direction of the mounting hole 32 to form the second photonic crystal 33, and the inside of the first layer metal ring 331 is connected with the rubber sleeve 34.

The material of the metal ring can be steel, copper or other alloys, the material of the nonmetal ring can be nylon, polymer composite material, rubber and piezoelectric composite material, the material of the nonmetal ring is preferably the piezoelectric composite material, and when the material of the nonmetal ring is the piezoelectric composite material, the energy of suspension vibration can be recovered and converted into electric energy.

The second photonic crystal 33 formed by the metal ring and the non-metal ring being sleeved can change the cut-off frequency by changing the elastic modulus and the thickness of the metal ring and the non-metal ring.

The fourth connecting hole 22 is connected with the mounting hole 32 through a pin shaft, and the upper support 2 is connected with the lower support 3 through the pin shaft and the magnetorheological damper 1.

Hereinafter, a method of mounting a cab suspension device according to the present invention will be described.

Firstly, connecting a metal ring and a non-metal ring of a second photonic crystal 33 part of a lower bracket 3 of a cab suspension device together in a gluing and expanding mode, and sleeving a rubber shaft sleeve 34 and a first layer of metal ring 331 together; the band gap frequency range can be adjusted by the material thickness and elastic modulus of the metal and non-metal rings.

And secondly, connecting an upper bracket 2 and a lower bracket 3 of the cab suspension device together through a pin shaft, and then installing the magnetorheological damper 1.

The invention provides a cab suspension device, which is a photonic crystal cab suspension device provided with a magnetorheological damper, and has the characteristics of active vibration isolation and photonic crystal band gap vibration and noise isolation, and the functions of power generation and vibration energy recovery, wherein the magnetorheological damper is used for realizing active vibration isolation, and the photonic crystal band gap effect is used for realizing effective conduction isolation on specific frequency, so that the vibration and noise transmitted by the cab suspension device can be effectively reduced, and an important role is played in improving the vibration isolation performance of a cab; the suspension device of the cab is directly changed on the traditional suspension device of the cab, and the universality is strong.

The preferred embodiments of the present invention have been described in detail. However, the present invention is not limited to the above-described embodiments, and can be implemented in various forms. The embodiments disclosed in this specification are intended only to complete the disclosure of the present invention so that those skilled in the art will be fully aware of the scope of the invention provided herein. The protection scope of the present invention should be subject to the content of the claims.