阅读说明：本技术 一种挤压模式巨电流变液阻尼器 (Squeeze mode giant electrorheological fluid damper ) 是由 孙翊 鹿奔 蒲华燕 王敏 丁基恒 贾文川 彭艳 罗均 于 2021-08-24 设计创作，主要内容包括：本发明公开了一种挤压模式巨电流变液阻尼器,包括支架、容器和连接结构。其中,支架包括底板、导向轴和顶板,导向轴垂直固定于底板上,顶板滑动设置于导向轴上；容器包括容器本体和同轴设置于容器本体内的两个螺旋弹簧片,容器本体固定于底板上,两个螺旋弹簧片的底部均固定于容器的底部,两个螺旋弹簧片互不接触且间隔180°；容器本体用于容纳巨电流变液；两个螺旋弹簧片分别用于连接正极和负极；连接结构的顶部与顶板固定相连,连接结构的底部与两个螺旋弹簧片的顶部固定相连。相比于现有技术,本发明的挤压模式巨电流变液阻尼器在小体积、无须依赖额外刚性元件的情况下,能够输出一个稳定、可控、巨电流变液利用率高的阻尼力。(The invention discloses a squeeze mode giant electrorheological fluid damper, which comprises a bracket, a container and a connecting structure. The support comprises a bottom plate, a guide shaft and a top plate, the guide shaft is vertically fixed on the bottom plate, and the top plate is arranged on the guide shaft in a sliding manner; the container comprises a container body and two spiral spring pieces coaxially arranged in the container body, the container body is fixed on the bottom plate, the bottoms of the two spiral spring pieces are fixed at the bottom of the container, and the two spiral spring pieces are not in contact with each other and are separated by 180 degrees; the container body is used for containing giant electrorheological fluid; the two spiral spring pieces are respectively used for connecting the positive electrode and the negative electrode; the top of the connecting structure is fixedly connected with the top plate, and the bottom of the connecting structure is fixedly connected with the tops of the two spiral spring pieces. Compared with the prior art, the extrusion mode giant electrorheological fluid damper can output a stable and controllable damping force with high utilization rate of the giant electrorheological fluid under the conditions of small volume and no dependence on an additional rigid element.)

1. A squeeze-mode giant electrorheological fluid damper, comprising:

the support comprises a bottom plate, a guide shaft and a top plate, the guide shaft is vertically fixed on the bottom plate, and the top plate is arranged on the guide shaft in a sliding manner; one of the bottom plate and the top plate is used for connecting a fixed platform, and the other one of the bottom plate and the top plate is used for connecting a load so as to receive vibration energy;

the container comprises a container body and two spiral spring pieces coaxially arranged in the container body, the container body is fixed on the bottom plate, the bottoms of the two spiral spring pieces are fixed at the bottom of the container, and the two spiral spring pieces are not in contact with each other and are separated by 180 degrees; the container body is made of insulating materials and is used for containing giant electrorheological fluid; the two spiral spring pieces are respectively used for connecting the positive electrode and the negative electrode to generate an electric field;

the top of the connecting structure is fixedly connected with the top plate, the bottom of the connecting structure is fixedly connected with the tops of the two spiral spring pieces, and the connecting structure is made of insulating materials.

2. The squeeze mode giant electrorheological fluid damper as claimed in claim 1, wherein the bracket further comprises a guide shaft support fixed to the bottom plate, a bottom of the guide shaft is fixed to the guide shaft support, and a linear bearing fixed to the top plate, the guide shaft being slidably coupled to the linear bearing.

3. The squeeze mode giant electrorheological fluid damper as claimed in claim 1, wherein the connecting structure comprises a connecting shaft support, a connecting shaft and a connecting plate, the connecting shaft support is fixed on the top plate, the connecting plate is fixedly connected with the tops of the two spiral spring pieces, the top of the connecting shaft is fixedly connected with the connecting shaft support, and the bottom of the connecting shaft is fixedly connected with the connecting plate.

4. The squeeze mode giant electrorheological fluid damper of claim 1 wherein the container comprises an upper container cap and a lower container bottom plate, the upper container cap being secured to the lower container bottom plate, the lower container bottom plate being secured to the bottom plate, the connecting structure passing through the upper container cap.

5. The squeeze mode giant electrorheological fluid damper of claim 4 wherein the bottom plate and the bottom plate of the lower vessel are of a unitary construction.

6. The squeeze mode giant electrorheological fluid damper of claim 4 wherein the lower surface of the upper container cap is provided with a boss for spacing contact with the inner sidewall of the lower container bottom plate.

7. The squeeze mode giant electrorheological fluid damper as claimed in claim 4, wherein the bottom of the lower container bottom plate is provided with a first wire passing hole, a second wire passing hole and a wire passing groove, the first wire passing hole is used for a first lead to pass through, the second wire passing hole is used for a second lead to pass through, and the wire passing groove is used for embedding the first lead and the second lead; the first lead and the second lead are respectively used for connecting the two spiral spring pieces with the positive pole and the negative pole of an external power supply.

8. The squeeze mode giant electrorheological fluid damper of claim 1 wherein the container body and the connecting structure are both made of polyoxymethylene plastic.

9. The squeeze mode giant electrorheological fluid damper of claim 1 wherein the helical spring plate is copper.

Technical Field

The invention relates to the technical field of vibration reduction dampers, in particular to an extrusion mode giant current variable damper.

Background

The electrorheological fluid is a novel intelligent material, and the material shows a special rheological effect, namely when no electric field exists in liquid, particles in the electrorheological fluid are in disordered distribution and are macroscopically represented as Newtonian fluid; when an electric field is applied in the liquid, the particles in the liquid are polarized and arranged in an ordered distribution manner within milliseconds, and macroscopically, the particles are transformed from Newtonian fluid into a solid-like form; when the electric field in the applied liquid is set to zero, the particles in the liquid restore the original disordered distribution, the particles are converted into Newtonian fluid from the quasi-solid form, the whole process is reversible, the response speed is high, and the quasi-solid form with different degrees can be realized by controlling the voltage. The giant electrorheological fluid has similar properties to those of electrorheological fluid, and has rheological performance several times higher than that of electrorheological fluid.

Based on the characteristics of giant electrorheological fluid, the giant electrorheological fluid is particularly favored in the field of vibration reduction and is a good choice for manufacturing vibration reduction dampers. Compared with the traditional damper, the giant electrorheological fluid damper has the advantages of small volume, no space occupation, adjustable and strong adaptability of damping, excellent and stable performance and the like. Although the existing giant electrorheological fluid damper is superior to the traditional damper, the existing giant electrorheological fluid damper still has defects, for example, the multilayer extrusion type giant electrorheological fluid damper provided by the patent number CN 107687494 has the advantages that the damper connects a plurality of electrodes with the cylinder wall through the overlapping in rows, the instability of equipment is increased, and meanwhile, the hidden troubles of liquid leakage and electric leakage exist. Moreover, the existing giant electrorheological fluid damper has the defects of low damping utilization rate, complex structure, incapability of being used independently and the like.

Disclosure of Invention

The invention aims to provide a squeeze mode giant electrorheological fluid damper which can output a stable and controllable damping force with high utilization rate of the giant electrorheological fluid under the conditions of small volume and no dependence on an additional rigid element.

In order to achieve the purpose, the invention provides the following scheme:

the invention discloses a squeeze mode giant electrorheological fluid damper, which comprises:

the support comprises a bottom plate, a guide shaft and a top plate, the guide shaft is vertically fixed on the bottom plate, and the top plate is arranged on the guide shaft in a sliding manner; one of the bottom plate and the top plate is used for connecting a fixed platform, and the other one of the bottom plate and the top plate is used for connecting a load so as to receive vibration energy;

the container comprises a container body and two spiral spring pieces coaxially arranged in the container body, the container body is fixed on the bottom plate, the bottoms of the two spiral spring pieces are fixed at the bottom of the container, and the two spiral spring pieces are not in contact with each other and are separated by 180 degrees; the container body is made of insulating materials and is used for containing giant electrorheological fluid; the two spiral spring pieces are respectively used for connecting the positive electrode and the negative electrode to generate an electric field;

the top of the connecting structure is fixedly connected with the top plate, the bottom of the connecting structure is fixedly connected with the tops of the two spiral spring pieces, and the connecting structure is made of insulating materials.

Preferably, the support further comprises a guide shaft support fixed to the bottom plate, a bottom of the guide shaft is fixed to the guide shaft support, and a linear bearing fixed to the top plate, wherein the guide shaft is slidably connected to the linear bearing.

Preferably, the connecting structure comprises a connecting shaft support, a connecting shaft and a connecting plate, the connecting shaft support is fixed on the top plate, the connecting plate is fixedly connected with the tops of the two spiral spring pieces, the top of the connecting shaft is fixedly connected with the connecting shaft support, and the bottom of the connecting shaft is fixedly connected with the connecting plate.

Preferably, the container includes an upper container lid secured to the lower container floor and a lower container floor secured to the floor, the connecting structure passing through the upper container lid.

Preferably, the bottom plate and the lower container bottom plate are of an integrated structure.

Preferably, the lower surface of the upper container cover is provided with a boss which is used for being in limit contact with the inner side wall of the lower container bottom plate.

Preferably, the bottom of the lower container bottom plate is provided with a first wire passing hole, a second wire passing hole and a wire passing groove, the first wire passing hole is used for a first lead to pass through, the second wire passing hole is used for a second lead to pass through, and the wire passing groove is used for the first lead and the second lead to be embedded; the first lead and the second lead are respectively used for connecting the two spiral spring pieces with the positive pole and the negative pole of an external power supply.

Preferably, the container body and the connecting structure are both made of polyoxymethylene plastic.

Preferably, the material of the spiral spring piece is copper.

Compared with the prior art, the invention has the following technical effects:

the existing giant electrorheological fluid damper needs to be additionally provided with a rigid device when working, but the spiral spring piece used by the extrusion mode giant electrorheological fluid damper belongs to a spring device, can provide certain rigidity, keeps the giant electrorheological fluid damper to work near a balance position, can independently work without an additional rigid device, and has small volume. Therefore, the extrusion mode giant electrorheological fluid damper can output a stable and controllable damping force with high utilization rate of the giant electrorheological fluid under the conditions of small volume and no dependence on an additional rigid element.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic external structural view of the squeeze mode giant electrorheological fluid damper of the present embodiment;

fig. 2 is a schematic diagram of an internal structure of the squeeze mode giant electrorheological fluid damper of the present embodiment;

FIG. 3 is a schematic view of a spiral spring plate;

FIG. 4 is a schematic view of the structure of the bottom plate of the lower container;

description of reference numerals: 1-lower container bottom plate; 2-a guide shaft support; 3-a guide shaft; 4-a linear bearing; 5-a top plate; 6-connecting shaft support; 7-a connecting shaft; 8-upper container cover; 9-a connecting plate; 10-a helical spring leaf; 11-giant electrorheological fluid.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a squeeze mode giant electrorheological fluid damper which can output a stable and controllable damping force with high utilization rate of the giant electrorheological fluid under the conditions of small volume and no dependence on an additional rigid element.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1 to 4, the present embodiment provides a squeeze mode giant electrorheological fluid damper, which includes a bracket, a container and a connecting structure.

The support comprises a bottom plate, a guide shaft 3 and a top plate 5, the guide shaft 3 is vertically fixed on the bottom plate, and the top plate 5 is arranged on the guide shaft 3 in a sliding mode. One of the bottom plate and the top plate 5 is used for connecting a fixed platform, and the other is used for connecting a load, and the support can receive vibration energy when the load and the fixed platform move relatively. The container comprises a container body and two spiral spring pieces 10 coaxially arranged in the container body, the container body is fixed on the bottom plate, the bottoms of the two spiral spring pieces 10 are fixed at the bottom of the container, and the two spiral spring pieces 10 are not in contact with each other and are spaced by 180 degrees. The container body is made of insulating materials and is used for containing the giant electrorheological fluid 11. The spiral spring pieces 10 are made of conductive materials, and the two spiral spring pieces 10 are respectively used for connecting the positive pole and the negative pole to generate an electric field. After the two spiral spring pieces 10 are respectively connected to the positive electrode and the negative electrode of the external power supply, an electric field is generated between the two spiral spring pieces 10, thereby changing the damping characteristic of the giant electrorheological fluid 11. The top of the connecting structure is fixedly connected with the top plate 5, the bottom of the connecting structure is fixedly connected with the tops of the two spiral spring pieces 10, and the connecting structure is made of insulating materials.

The working principle of the extrusion mode giant electrorheological fluid damper is as follows:

when relative displacement is generated between the fixed platform and the load, vibration is generated, the fixed platform is assumed to be fixed as a reference point, the load generates displacement, and the displacement is transmitted to the spiral spring piece 10 through the connecting structure. When the load moves downwards, the spiral spring piece 10 is pressed, on one hand, the spiral spring piece 10 generates elasticity after being pressed, and the direction of the elasticity is opposite to the moving direction of the load; on the other hand, the two spiral spring pieces 10 are used as two polar plates, the distance between the two polar plates is reduced, the giant electrorheological fluid 11 between the two polar plates works in an extrusion mode, the fluid is extruded to two sides, and damping force opposite to the load displacement direction is generated. The elastic force and the damping force are superposed to reduce the downward movement speed of the load together, and when the downward displacement of the load is maximum, the speed is zero. Then, due to the elasticity of the spiral spring pieces 10, the load can be restored to the initial position, in the restoration process, the two spiral spring pieces 10 are used as two polar plates, the distance between the two polar plates is increased, the giant electrorheological fluid 11 between the two polar plates works in an extrusion mode, the liquid is extruded between the two polar plates, damping force opposite to the displacement direction is generated, and the energy of vibration is consumed. When the load displaces upwards, the spiral spring piece 10 is stretched, and the damping force can be generated, so that the energy of vibration is consumed, and the vibration is reduced. The length of the connection structure cannot be too long to avoid short circuit due to too close distance when the two spiral spring pieces 10 are compressed.

The specific form of the support is various, and those skilled in the art can select the support according to actual needs as long as the support can be connected with a fixed platform and a load so as to receive vibration energy. In this embodiment, the support further comprises a guide shaft support 2 and a linear bearing 4. The guide shaft support 2 is fixed on the bottom plate, the bottom of the guide shaft 3 is fixed on the guide shaft support 2, the linear bearing 4 is fixed on the top plate 5, and the guide shaft 3 is connected with the linear bearing 4 in a sliding mode. The linear bearing 4 on the guide shaft 3 limits the movement direction of the top plate 5 to the axial direction of the guide shaft 3, and the stability of the structure is enhanced.

In this embodiment, the connection structure includes a connection shaft support 6, a connection shaft 7, and a connection plate 9. The connecting shaft support 6 is fixed on the top plate 5, the connecting plate 9 is fixedly connected with the tops of the two spiral spring pieces 10, the top of the connecting shaft 7 is fixedly connected with the connecting shaft support 6, and the bottom of the connecting shaft 7 is fixedly connected with the connecting plate 9. Other types of connection structures can be selected by those skilled in the art according to actual needs, as long as the load can be moved synchronously with the top of the helical spring plate 10.

In this embodiment, the container includes an upper container lid 8 and a lower container bottom panel 1. The upper container cover 8 is fixed on the lower container bottom plate 1, the lower container bottom plate 1 is fixed on the bottom plate, and the connecting structure penetrates through the upper container cover 8. In this embodiment, bottom plate and lower container bottom plate 1 formula structure as an organic whole, can one shot forming bottom plate and lower container bottom plate 1, improve machining efficiency, reduce the processing cost.

In order to prevent the upper container lid 8 from being separated from the lower container bottom plate 1, the lower surface of the upper container lid 8 in this embodiment is provided with a boss for spacing contact with the inner sidewall of the lower container bottom plate 1. The upper container lid 8 is restrained from movement in a radial direction (perpendicular to the axis of the container) by limited contact of the boss with the inside wall of the lower container base 1. A gasket is preferably provided between the boss and the inner wall of the lower container bottom plate 1 to reduce the possibility of liquid leakage.

In this embodiment, the bottom of the lower container bottom plate 1 is provided with a first wire passing hole, a second wire passing hole and a wire passing groove, the first wire passing hole is used for a first wire to pass through, the second wire passing hole is used for a second wire to pass through, and the wire passing groove is used for embedding the first wire and the second wire, so that the first wire and the second wire can be led out conveniently. The first and second wires are used to connect the two coil spring pieces 10 to the positive and negative poles of an external power supply, respectively. After the first lead and the second lead are installed, a gap between the first lead and the first wire passing hole needs to be sealed, and a gap between the second lead and the second wire passing hole needs to be sealed, so as to prevent leakage of the giant electrorheological fluid 11.

In this embodiment, the material of container body and connection structure is polyoxymethylene plastic, and other insulating materials can also be selected to the skilled person in the art, as long as can prevent the electric leakage can. The material of the spring plate 10 may be copper, or other commonly used conductive materials.

In this embodiment, the meaning of "top" and "upper" indicating the orientation is the same as that of "upper" in fig. 1 to 4, and the meaning of "bottom" and "lower" indicating the orientation is the same as that of "lower" in this embodiment, and corresponds to that of "lower" in fig. 1 to 4.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.