CN209795096U - Hydraulic and electromagnetic double-damping type vehicle energy feedback suspension - Google Patents

Abstract

The utility model discloses a fluid pressure type and two damping type vehicles of electromagnetic type are presented can suspension, including rings, piston rod, cylinder, with piston assembly, permanent magnet, induction coil, buffer spring, hydraulic pressure chamber that the cylinder matches down, go up rings, hydraulic pressure pipe, choke valve and present can the circuit. The upper end of cylinder links to each other with last rings, installs the permanent magnet on the piston assembly, and the upper and lower both ends of piston assembly link to each other with the cylinder with buffer spring, and the space between piston assembly and the cylinder lets in hydraulic oil and forms the hydraulic pressure chamber, uses the hydraulic pressure union coupling between the hydraulic pressure chamber, is equipped with the electromagnetism choke valve in the hydraulic pressure pipeline, presents ability circuit and induction coil circuit connection. The piston assembly is capable of moving up and down with the piston rod. The novel suspension system adopts a hydraulic and electromagnetic double-vibration-damping structure, so that on one hand, a piston can cut a magnetic induction line to generate current and generate electromagnetic damping when moving back and forth in a cylinder barrel; on the other hand, the rigidity and the damping ratio of the energy feedback suspension can be controlled by controlling the cross-sectional area of the through flow of the electromagnetic throttle valve.

Description

Hydraulic and electromagnetic double-damping type vehicle energy feedback suspension

Technical Field

The invention relates to a vehicle energy-saving technology and a vehicle active suspension technology, in particular to a hydraulic and electromagnetic double-damping vehicle energy-feedback suspension.

Background

In the field of automobiles, energy-saving work of automobiles is highly emphasized by the popularity of all countries in the world, and an automobile vibration energy recycling device is a popular direction of research. In the running process of the automobile, the automobile can generate vibration of different degrees due to the unevenness of the road surface, and in order to buffer the vibration, an elastic element and a vibration absorber are arranged between an automobile axle and an automobile body. Conventional shock absorbers convert the energy transferred to the shock absorber into heat energy, thereby losing this energy. The currently developed vehicle active suspension system has a complex structure, slow dynamic response and high energy consumption, and the improvement of technical performance and the popularization and application of products are severely restricted.

The currently proposed active suspension of the energy feedback type of the automobile has the problem of low energy recovery efficiency or poor control effect. Through detailed analysis of research results of predecessors, the energy feedback suspensions of a rack and pinion type, a ball screw type and the like do not meet the requirement that the compression damping force of an ideal suspension system is smaller than the extension damping force because the compression damping force is equal to the extension damping force. Therefore, the energy feedback suspension scheme with hydraulic and electromagnetic double vibration reduction is provided, so that the aims of recovering vibration energy and controlling the rigidity and damping of the suspension are fulfilled.

Disclosure of Invention

The invention aims to solve the problems and provides the vehicle active suspension which is simple in structure, convenient to use and capable of realizing real-time adjustment of damping and rigidity characteristics of the suspension.

In order to solve the technical problems, the technical scheme of the invention is as follows: a hydraulic and electromagnetic type double-damping vehicle energy feedback type active suspension comprises a lower lifting ring (1), a piston rod (2), a lower hydraulic oil cavity (3), a lower buffer spring (4), a cylinder barrel (5), a piston assembly (6) matched with the cylinder barrel, a permanent magnet (7), an induction coil (8), an electromagnetic throttle valve (9), a hydraulic pipe (10), an upper buffer spring (11), an upper hydraulic oil cavity (12) and an upper lifting ring (13). The upper end of cylinder links to each other with last rings, and the upper and lower both ends that install permanent magnet, piston assembly on the piston assembly link to each other with the cylinder with buffer spring, and the space between piston assembly and the cylinder lets in hydraulic oil and forms hydraulic pressure chamber, uses the hydraulic pressure union coupling between the hydraulic pressure chamber, is equipped with the choke valve in the hydraulic pressure pipe, presents the ability circuit and is connected with the induction coil electricity. The piston assembly is capable of moving up and down with the piston rod.

The induction coil is fixed on the cylinder barrel, the permanent magnet is fixed on the piston assembly, the buffer spring is connected with the upper end of the piston assembly, and the lower end of the piston assembly is connected with the buffer spring.

The cylinder barrel and the piston assembly are of a revolving body structure, and the permanent magnet and the induction coil are of annular structures.

The beneficial effects of the invention are as follows.

1. The hydraulic and electromagnetic double-damping type vehicle energy feedback suspension is simple in structure and convenient to arrange, and the damping and rigidity force characteristics required by the suspension are obtained by an integrated structure.

2. The controllability is good, the dynamic response is quick, and compared with a pure hydraulic system, the addition of electromagnetic control has better controllability and response capability.

3. The invention has good practicability, adopts a hydraulic and electromagnetic double-damping scheme, and has longer service life compared with a rack-and-pinion type and a ball screw type.

4. On one hand, the energy consumption of the active suspension is greatly reduced through the effective cooperation of the electromagnetic damping and the spring buffering; on the other hand, if necessary, the recovered energy of the energy feedback device can also be used for offsetting a part of energy consumption.

Drawings

Fig. 1 is a front view of a hydraulic and electromagnetic dual damping type energy feedback suspension for a vehicle according to the present invention.

Fig. 2 is a structural plan view of a hydraulic and electromagnetic dual damping type vehicle energy-regenerative suspension according to the present invention.

In the drawings, the reference numerals denote the following components: the hydraulic cylinder comprises a lower lifting ring (1), a piston rod (2), a lower hydraulic oil cavity (3), a lower buffer spring (4), a cylinder barrel (5), a piston assembly (6) matched with the cylinder barrel, a permanent magnet (7), an induction coil (8), an electromagnetic throttle valve (9), a hydraulic pipe (10), an upper buffer spring (11), an upper hydraulic oil cavity (12) and an upper lifting ring (13).

Detailed Description

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the hydraulic and electromagnetic dual-damping vehicle energy feedback suspension provided by the invention comprises a lower suspension ring (1), a piston rod (2), a lower hydraulic oil cavity (3), a lower buffer spring (4), a cylinder barrel (5), a piston assembly (6) matched with the cylinder barrel, a permanent magnet (7), an induction coil (8), an electromagnetic throttle valve (9), a hydraulic pipe (10), an upper buffer spring (11), an upper hydraulic oil cavity (12) and an upper suspension ring (13). The upper end of the cylinder barrel (5) is connected with the upper lifting ring, the permanent magnet (7) is installed on the piston assembly (6), the upper end and the lower end of the piston assembly (6) are connected with the cylinder barrel (5) through buffer springs, and hydraulic oil is introduced into a closed space formed by the piston assembly (6) and the cylinder barrel (5) to form an upper hydraulic oil cavity (12) and a lower hydraulic oil cavity (3); the upper hydraulic oil cavity (12) and the lower hydraulic oil cavity (3) are connected by a hydraulic pipe (10), and an electromagnetic throttle valve (9) is arranged in the hydraulic pipe; the energy feed circuit is electrically connected with the induction coil (8). The piston assembly (6) can move up and down along with the piston rod (2).

In the present embodiment, the permanent magnet 7 and the energy feedback circuit are both existing mature technologies or devices.

In order to facilitate understanding of the working process of the present invention, the working process of the present invention is as follows.

Compression stroke: the piston rod (2) retracts relative to the cylinder barrel (5) to drive the piston assembly (6) to move upwards in the cylinder barrel (5) relative to the induction coil (8), and mechanical energy is converted into electric energy. Meanwhile, hydraulic oil in the upper hydraulic oil cavity (12) is pressurized and flows into the lower hydraulic oil cavity (12) through the electromagnetic throttle valve (9) by a hydraulic pipeline, and the restoring resistance can be adjusted by controlling the through-flow cross-sectional area of the throttle orifice, so that the effect of dynamically adjusting the rigidity and the damping of the suspension is achieved. The upper buffer spring (11) is compressed, the lower buffer spring (4) is extended, and mechanical energy is converted into elastic potential energy, so that the effects of further reducing vibration and protecting the device are achieved.

A recovery stroke: the piston rod (2) extends out relative to the cylinder barrel (5) to drive the piston assembly (6) to move downwards in the cylinder barrel (5) relative to the induction coil (8), and mechanical energy is converted into electric energy. Meanwhile, the hydraulic oil in the lower hydraulic oil cavity (3) is pressurized and flows into the upper hydraulic oil cavity (12) through the electromagnetic throttle valve (9) by a hydraulic pipe. The vibration displacement and the vibration acceleration of the vehicle body are collected in real time through the sensor, the through-flow section area of the throttling port is controlled through the ECU to adjust the recovery resistance, and then the rigidity and the damping coefficient of the suspension are changed. In the process, the lower buffer spring (4) is compressed, the upper buffer spring (11) is extended, and partial mechanical energy is converted into the elastic potential energy of the buffer spring.

In the invention, the piston assembly (6) relatively reciprocates in the induction coil (8), mechanical energy is converted into electric energy by reciprocally cutting the magnetic induction line, and the movement of the piston assembly is damped in the process, so that the required dynamic damping characteristic of the suspension is obtained, and the electric energy can be recovered by an energy feedback circuit; meanwhile, through controlling the through-flow cross section area of the hydraulic pipe throttling valve, the hydraulic resistance, the elasticity of the buffer spring and the electromagnetic damping are effectively cooperated, and the dynamic adjustment of the suspension rigidity and the damping is realized.

It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.

Claims (4)

1. A hydraulic and electromagnetic double-damping type vehicle energy-feedback suspension is characterized in that: the hydraulic cylinder comprises a lower lifting ring (1), a piston rod (2), a lower hydraulic oil cavity (3), a lower buffer spring (4), a cylinder barrel (5), a piston assembly (6) matched with the cylinder barrel, a permanent magnet (7), an induction coil (8), an electromagnetic throttle valve (9), a hydraulic pipe (10), an upper buffer spring (11), an upper hydraulic oil cavity (12) and an upper lifting ring (13).

2. A hydraulic and electromagnetic dual damping vehicle regenerative suspension as defined in claim 1, wherein: the upper end of cylinder (5) links to each other with last rings, install permanent magnet (7) on piston assembly (6), the upper and lower both ends of piston assembly (6) link to each other with cylinder (5) with buffer spring, the enclosure space that piston assembly (6) and cylinder (5) constitute lets in hydraulic oil and forms hydraulic oil chamber (12) down, hydraulic oil chamber (3) down, go up hydraulic oil chamber (12), connect with hydraulic pressure pipe (10) between hydraulic pressure chamber (3) down, be equipped with electromagnetism choke valve (9) in the hydraulic pressure pipe, it is connected with induction coil (8) electricity to present can the circuit, piston assembly (6) can reciprocate along with piston rod (2).

3. A hydraulic and electromagnetic dual damping vehicle regenerative suspension as defined in claim 1, wherein: lower rings (1) upper end links firmly on piston rod (2), and the lower extreme links to each other with the axle, goes up rings (13) lower extreme and links firmly on cylinder (5), and the upper end links to each other with the automobile body, induction coil (8) are fixed in on cylinder (5), and on permanent magnet (7) were fixed in piston assembly (6), go up buffer spring (11) and the upper end of piston assembly (6) and link to each other, and the lower extreme of piston assembly (6) links to each other with lower buffer spring (4).

4. A hydraulic and electromagnetic dual damping vehicle regenerative suspension as defined in claim 1, wherein: the cylinder barrel (5) and the piston assembly (6) are of a revolving body structure, the permanent magnet (7) and the induction coil (8) are of an annular structure, and hydraulic oil is introduced into a closed space formed by the cylinder barrel (5) and the piston assembly (6) to form an upper hydraulic oil chamber (12) and a lower hydraulic oil chamber (3).