CN211335586U - Quincunx piezoelectric type energy feedback device for automobile suspension - Google Patents

Abstract

The utility model discloses a quincunx piezoelectric type automobile suspension energy feedback device, which mainly comprises a gear shaft transmission device, a quincunx piezoelectric device and an energy collecting system, is fixed by a bottom plate and is integrally installed at a proper position around a frame, and ensures that a rack in the energy feedback device is fixedly connected with an original shock absorber of a vehicle, so that the original shock absorber of the vehicle drives the rack to move in a vertical plane; the suspension vibration energy caused by the excitation of an uneven road surface or the vibration of a vehicle body is recovered through the continuous power generation of the vehicle vibration and the piezoelectric device, so that the electric energy consumed by the electric control equipment of the vehicle is supplemented.

Description

Quincunx piezoelectric type energy feedback device for automobile suspension

Technical Field

The utility model belongs to car energy-saving technology and novel suspension field mainly relate to piezoelectric type automotive suspension vibration energy recovery system.

Background

Under the background of global energy crisis, people pay more and more attention to effective recovery of energy, which is of great significance for improving the recovery efficiency of vibration energy of automobile suspensions. The suspension is a general name of all connecting devices between a frame and an axle (or wheel) of an automobile, the traditional automobile suspension has good vibration damping and buffering effects, but most of vibration energy is consumed in the form of heat energy, the existing energy feedback suspension is mainly divided into an electromagnetic type, a kinetic energy type and a hydraulic type according to the energy conversion type, and along with the gradual rise of piezoelectric materials, the piezoelectric device and the automobile suspension are combined to recover the energy generated by the vibration of the automobile suspension, so that the piezoelectric device has a certain development prospect.

For example, in the existing invention patent, "a piezoelectric intelligent automobile suspension vibration energy recovery device" (CN105375817A), an upper suspension rubber boss is adopted to press a piezoelectric plate in the suspension vibration process to generate electric energy, and various suspension structures are applicable by designing the piezoelectric plates with different specifications and the upper suspension, but because the rubber boss directly contacts the piezoelectric plate, the piezoelectric plate directly bears the suspension impact, and thus, the requirements on the material and the performance of the piezoelectric plate are higher.

The invention discloses a piezoelectric energy recovery device applied to an automobile suspension system (CN109728747A), which adopts a ball screw and a screw nut component to realize the conversion from linear motion to rotary motion between an automobile body and a wheel, adopts a piezoelectric material with high energy density, and utilizes magnetic force to deform a piezoelectric sheet so as to reduce the vibration energy loss caused by friction. However, the requirements for piezoelectric materials are high, and the cost of electromagnetic equipment is high, so the problems of manufacturing precision requirements, lubrication maintenance and the like of the device limit the practical engineering application of the device.

The invention discloses a parallel magnetic suspension energy recovery suspension (CN109849655A), which adopts a rotary structure and consists of a motion conversion part and an energy conversion part, wherein the motion conversion part realizes the conversion from linear motion to rotary motion between a vehicle body and wheels, and the energy conversion part realizes the conversion from vibration energy to electric energy. However, in the hydro-electric energy conversion device, the hydraulic motor and the generator are hydraulically driven to rotate to generate electric energy, and unnecessary heat energy is generated to affect the energy conversion efficiency.

Disclosure of Invention

For realizing the recovery to automotive suspension vibration energy in the vehicle transportation, the utility model provides a plum blossom shape piezoelectric type energy recuperation device that simple structure, long service life, energy conversion are efficient. The utility model discloses a can improve the recovery efficiency of energy among the suspension system, and improve the travelling comfort of taking the car.

The quincunx piezoelectric energy feedback device mainly comprises a gear shaft transmission device, a quincunx piezoelectric device and an energy collecting system, is fixed through a bottom plate and integrally installed at a proper position around a frame, and ensures that a rack in the energy feedback device is fixedly connected with an original shock absorber of a vehicle, so that the original shock absorber of the vehicle drives the rack to move in a vertical plane. The suspension vibration energy caused by the excitation of an uneven road surface or the vibration of a vehicle body is recovered through the continuous power generation of the vehicle vibration and the piezoelectric device, so that the electric energy consumed by the electric control equipment of the vehicle is supplemented.

Compared with the prior art, the utility model has the following advantage:

1. the utility model discloses connect compactly between each structure of well gear shaft transmission, plum blossom type piezoelectric device, energy collection system, through the indirect contact of piezoelectric device and suspension, make piezoelectric device not directly receive power in automotive suspension's impact, this kind of flexible design is better to piezoelectric device's protection, device long service life.

2. The utility model provides a piezoelectric patch passes through carbon-point and rotary part contact, and the carbon-point has the characteristics of resistant rapid cooling and rapid heating, non-deformable, and is consequently little to piezoelectric device's wearing and tearing, and changes convenience, maintenance cost low in the use.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

FIG. 3 is a schematic view of the distance between the surface of the quincunx sheet and the axis and the piezoelectric film during rotation.

1-supporting cover, 2-gear shaft, 3-plum blossom piece, 4-central shaft, 5-hexagonal bolt, 6-supporting bottom plate, 7-piezoelectric film, 8-rack and 9-energy collecting system.

Detailed Description

The present invention will be described in detail with reference to the following specific examples

Fig. 1 and 2 are schematic diagrams of a quincunx piezoelectric type automobile suspension energy feedback device, which mainly comprise a gear shaft transmission device, a quincunx piezoelectric device and an energy collection system.

Referring to fig. 1-3, in an embodiment of the present invention, a quincunx piezoelectric type energy feedback device for an automotive suspension is provided by a gear shaft

(2) And the rack (8) is fixed on the vehicle shock absorber and moves up and down along with the vibration of the suspension, and then the rack (8) is used as an input to drive the quincunx piezoelectric type automobile suspension energy feedback device to operate. The quincunx piezoelectric device comprises a quincunx sheet (3) and a piezoelectric film

(7) And (4) forming. The plum-blossom sheet (3) is a four-petal plum-blossom sheet, each petal is regarded as a bulge, and the motion track of the surface of the plum-blossom sheet is regarded as a fluctuant peak surface in the rotation process of the plum-blossom sheet. The distance between the surface of the plum blossom piece and the axis is changed as shown in FIG. 3

(3) At the time of rotation, the distance is from d₁Change to d₂The variation distance △ D of the piezoelectric sheet is △ dl₂/l₁The piezoelectric energy Q is c △ D, c is piezoelectric constant, fig. 3 shows the structure of the piezoelectric film (7), the piezoelectric film (7) is composed of an outer carbon rod and a piezoelectric sheet, the carbon rod is contacted with the quincunx sheet (3) to reduce the abrasion of the piezoelectric sheet and prolong the service life of the piezoelectric sheet, the central shaft (4) is inserted into the central grooves of the gear shaft (2) and the quincunx sheet (3) and fixedly connected into a whole, two ends of the central shaft (4) are supported and fixed by the through holes of the supporting covers (1) at two sides of the device, the structure is fixed by the hexagon bolts (5), and finally the supporting base plate (6) is fixed on the frame.

The device is under the pressure effect of frame, and the former shock absorber of vehicle drives rack (8) move in vertical plane, is connected with rack (8) through gear shaft (2), turns into the rotation of center pin (4) with the vertical motion of suspension, and plum blossom piece (3) rotate along with the rotation of center pin (4) to contact with piezoelectric film (7), through the position change of carbon-point and plum blossom piece (3) surface contact point, make piezoelectric film continuously receive the force swing, thereby produce the electric energy. The generated electric energy is collected by an energy collecting system (9), and can be used for automobile electric equipment after being processed by the energy system.

Claims (2)

1. The utility model provides a plum blossom formula piezoelectric type automotive suspension is presented can device which characterized in that: mainly by gear shaft transmission, plum blossom mold piezoelectric device, energy collecting system constitution, fix through the bottom plate, install suitable position around the frame as a whole to guarantee to present the rack in the energy device and the original shock absorber fixed connection of vehicle: the gear shaft transmission device consists of a gear shaft and a rack, the rack is fixed on a vehicle shock absorber and moves up and down along with the vibration of the suspension, and the quincunx piezoelectric device consists of a quincunx sheet and a piezoelectric film; the plum blossom piece is a four-petal plum blossom piece, each petal is regarded as a bulge, and in the rotating process, the motion track of the surface of the plum blossom piece is regarded as a fluctuant peak surface: the central shaft is inserted into the central grooves of the gear shaft and the quincunx sheet and fixedly connected into a whole, and two ends of the central shaft are supported and fixed by through holes of the supporting covers at two sides of the device, are fixed through the hexagon bolts and are finally fixed on the frame by the supporting bottom plate.

2. The quincunx piezoelectric automobile suspension energy feedback device of claim 1, wherein: the quincunx sheet is in contact with a carbon rod in the piezoelectric film, and the piezoelectric film is continuously stressed and swung through the position change of the contact point of the carbon rod and the surface of the quincunx sheet, so that electric energy is generated.

Images