CN211809014U - Variable elastic component, engine bracket and engine - Google Patents

Abstract

The utility model provides a pair of variable elastomeric element, engine support and engine relates to engine technical field, include: an elastomer and at least one piezoelectric stack mounted within the elastomer; the detection module is electrically connected with the piezoelectric stack, and the control module is electrically connected with the detection module and the piezoelectric stack. In the technical scheme, the variable elastic component has the piezoelectric stack, so that the effect of actively applying reverse vibration to counteract vibration generated by a working object is achieved, the purpose of active vibration reduction is achieved, the vibration reduction frequency range can be expanded by the elastic body with the fixed rigidity coefficient under the structural cooperation with the piezoelectric stack, vibration reduction work can be performed in a wider frequency range, and the application scene is wider.

Description

Variable elastic component, engine bracket and engine

Technical Field

The utility model belongs to the technical field of the engine technique and specifically relates to a variable elastomeric element, engine support and engine are related to.

Background

In the prior art, a common damping manner is passive damping, that is, a damping component such as a rubber body or a spring is added between two objects (a vibrating object and a fixed foundation), and when the object vibrates, the rubber body or the spring absorbs a certain vibration to reduce the vibration amplitude. However, the magnitude of the damping effect depends on the rubber or spring parameters selected, and since passive absorption dampers generally have certain fixed properties, they have different effects on different vibration frequencies. Therefore, when the vibration frequency of the vibration object is wide, one set of vibration absorber cannot meet the vibration absorbing effect of the whole working process, so that the vibration absorbing effect is poor and even fails.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a variable elastomeric element, engine support and engine to solve among the prior art poor technical problem of shock attenuation effect.

The utility model provides a pair of variable elastic component, include:

an elastomer and at least one piezoelectric stack mounted within the elastomer;

the detection module is electrically connected with the piezoelectric stack, and the control module is electrically connected with the detection module and the piezoelectric stack.

Further, at least one accommodating groove is formed in the elastic body, and the piezoelectric stack is installed in the accommodating groove.

Further, the holding tank is a through groove that runs through the elastomer, and the two ends of the piezoelectric stack are flush with the two end notches of the holding tank.

Furthermore, the elastic body is of a square structure or a cylinder structure, and the accommodating groove is formed along the longitudinal direction of the elastic body; the quantity of holding tank is a plurality of, and is a plurality of the holding tank is in the horizontal plane of elastomer is the rectangle and arranges.

Further, the variable elastic member further includes:

the first installation seat is installed at the top end of the elastic body, and the second installation seat is installed at the bottom end of the elastic body.

Further, the elastomer is a rubber material.

The utility model also provides an engine support, include variable elastomeric element.

The utility model also provides an engine, include the engine support.

In the technical scheme, the variable elastic component has the piezoelectric stack, so that the effect of actively applying reverse vibration to counteract vibration generated by a working object is achieved, the purpose of active vibration reduction is achieved, the vibration reduction frequency range can be expanded by the elastic body with the fixed rigidity coefficient under the structural cooperation with the piezoelectric stack, vibration reduction work can be performed in a wider frequency range, and the application scene is wider.

Drawings

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

Fig. 1 is an assembly view of a variable elastic component according to an embodiment of the present invention;

fig. 2 is an assembly view of a variable elastic component according to an embodiment of the present invention.

Reference numerals:

1. an elastomer; 2. a piezoelectric stack;

3. a detection module; 4. a control module;

5. a first mounting seat; 6. a second mounting seat;

11. and (6) accommodating the tank.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, 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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the present embodiment provides a variable elastic component, including:

an elastic body 1 and at least one piezoelectric stack 2, wherein the piezoelectric stack 2 is arranged in the elastic body 1;

the detection module 3 is electrically connected with the piezoelectric stack 2, and the control module 4 is electrically connected with the detection module 3 and the piezoelectric stack 2.

It should be noted that the inherent property of the piezoelectric stack 2 is that after a certain ac voltage is applied to two poles of the piezoelectric stack 2, the piezoelectric stack 2 generates a certain micro-displacement deformation correspondingly, and meanwhile, by adjusting the forward and reverse directions of the ac voltage applied to the piezoelectric stack 2, the forward and reverse directions of the micro-displacement deformation on the piezoelectric stack 2 can be adjusted correspondingly. It should be noted that the micro-displacement deformation generated by the piezoelectric stack 2 can only bear the axial force, i.e. the force in the stacking direction in the piezoelectric stack 2, and the bearing force in the direction other than the axial direction can easily cause damage.

Therefore, the variable elastic component is formed by the elastic body 1 and the piezoelectric stack 2 together, and the piezoelectric stack 2 is arranged in the elastic body 1 to form the variable elastic component with variable elasticity, so that the piezoelectric stack 2 can bear multidirectional force under the structural matching of the elastic body 1 like a spring with variable stiffness coefficient. The elastic body 1 may be made of rubber material, or other materials with elastic and damping effects, and is not limited herein.

Therefore, when the vibration source vibrates, the vibration is transmitted to the variable elastic component, and the transmitted vibration can be more complicated. The detection module 3 electrically connected with the piezoelectric stack 2 in the variable elastic component can detect the transmitted vibration frequency and amplitude in real time and record the vibration frequency and amplitude to form a feedback control signal to the control module 4. At this time, the control module 4 can control the piezoelectric stack 2 in the variable elastic component according to the feedback control signal, that is, the piezoelectric stack 2 generates corresponding micro-displacement deformation by applying a corresponding alternating voltage to the piezoelectric stack 2, so that the transmitted vibration is offset by using the micro-displacement deformation, thereby achieving the damping effect. The detection module 3 may adopt a piezoelectric structure similar to the piezoelectric stack 2, and obtain the deformation amount and the acceleration of the object to be measured by measuring and detecting the charges based on the principle that charges are generated at two ends (two poles) of the piezoelectric body when the piezoelectric body itself deforms. In addition, other vibration sensors with vibration detection function may be used, and are not limited herein.

Specifically, referring to fig. 1, the variable elastic member is mounted between the engine and the bracket as an example. When the engine generates vibration displacement towards the direction B in the working process of the engine, the piezoelectric stack 2 can be actively compressed and generate displacement towards the direction C, so that the variable elastic component is synchronously compressed and generates displacement towards the direction C, and the support is kept static relative to the space. On the contrary, when the engine generates vibration displacement in the direction a, the piezoelectric stack 2 can actively extend and generate displacement in the direction D, so that the variable elastic component synchronously extends and generates displacement in the direction D, and the support is kept static in a relative space. In the process, the compression and the extension of the piezoelectric stack 2 are controlled by the detection module 3 and the control module 4, which are specifically referred to above and will not be described herein again.

Therefore, the variable elastic component has the piezoelectric stack 2, so that the variable elastic component has the effect of actively applying reverse vibration to counteract the vibration generated by a working object, and the purpose of active damping is achieved, the elastic body 1 with fixed rigidity coefficient can expand the damping frequency range under the structural cooperation with the piezoelectric stack 2, the damping work is carried out in a wider frequency range, and the application scene is wider. Moreover, due to the structural cooperation of the piezoelectric stack 2 and the elastic body 1, more complicated vibration can be endured. The variable elastic component can be assembled between the vibration source and other mechanisms assembled and connected with the vibration source, for example, the variable elastic component can be assembled between the engine and the bracket, when the engine runs to generate vibration, the variable elastic component can apply reverse vibration to offset the vibration of the engine, so that the active vibration absorption effect is realized, a micro-vibration or no-vibration state is kept between the engine and the bracket, the vibration environment of the generator is greatly reduced, and the service life of the generator is prolonged.

In one embodiment, at least one receiving groove 11 is formed in the elastic body 1, and the piezoelectric stack 2 is mounted in the receiving groove 11. Wherein, the holding tank 11 can make things convenient for piezoelectric stack 2's installation, also makes things convenient for piezoelectric stack 2's dismantlement or change simultaneously. The receiving groove 11 may be a groove shape, such as a rectangle, that fits the piezoelectric stack 2. Besides, the receiving groove 11 may be provided in other groove shapes, such as a cylindrical shape, a prismatic shape, and the like. Structures such as clamping protrusions and the like capable of enabling the piezoelectric stack 2 to be mounted more firmly can be arranged in the groove of the accommodating groove 11, and detailed description is omitted here.

In one embodiment, the accommodating groove 11 is a through groove penetrating through the elastic body 1, and two ends of the piezoelectric stack 2 are flush with two end notches of the accommodating groove 11. Therefore, when the piezoelectric stack 2 is installed in the receiving groove 11, the two ends of the piezoelectric stack 2 can directly contact the vibration source or the mechanism connected to the vibration source, such as the engine and the bracket. Therefore, the piezoelectric stack 2 can sense or transmit more accurate vibration information to the detection module 3, and the damping effect is improved.

Referring to fig. 2, the elastic body 1 is a square structure or a cylinder structure, and the accommodating groove 11 is formed along a longitudinal direction of the elastic body 1; the number of the accommodating grooves 11 is plural, and the accommodating grooves 11 are arranged in a rectangular shape in the transverse plane of the elastic body 1. Elastomer 1 of cube structure or cylinder structure assembles more easily, and the vibrations that come can diversified, the even detection of a plurality of regular spread's piezoelectric stack 2 simultaneously transmit to can be more accurate apply the offsetting vibrations of direction, reach better shock attenuation effect. It should be noted that the elastic body 1 is not limited to a square body structure or a column body structure, and those skilled in the art may also arrange the elastic body 1 in other suitable structures according to the requirement, and the invention is not limited herein.

With continued reference to fig. 1, the variable elastic member further comprises: the elastic body 1 comprises a first mounting seat 5 and/or a second mounting seat 6, wherein the first mounting seat 5 is mounted at the top end of the elastic body 1, and the second mounting seat 6 is mounted at the bottom end of the elastic body 1. The first mounting seat 5 and the second mounting seat 6 can be respectively used for assembling the variable elastic component with a vibration source or a mechanism connected with the vibration source, and the vibration transmitted by sensing can be more uniform and accurate through the first mounting seat 5 and the second mounting seat 6, so that the offsetting vibration in the application direction can be more accurate, and a better damping effect is achieved.

The utility model also provides an engine support, include variable elastomeric element. The engine bracket can be assembled with the variable elastic component, so that the engine is installed in the vehicle by using the variable elastic component, and active shock absorption is formed on the shock emitted by the engine during the running process of the vehicle.

The utility model also provides an engine, include the engine support.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (8)

1. A variable elastic member, comprising:

an elastomer and at least one piezoelectric stack mounted within the elastomer;

the detection module is electrically connected with the piezoelectric stack, and the control module is electrically connected with the detection module and the piezoelectric stack.

2. The variable elastic component of claim 1, wherein the elastic body defines at least one receiving groove therein, and wherein the piezoelectric stack is mounted in the receiving groove.

3. The variable elastic member according to claim 2, wherein the receiving groove is a through groove penetrating the elastic body, and both ends of the piezoelectric stack are flush with both end notches of the receiving groove.

4. The variable elastic component according to claim 2 or 3, wherein the elastic body is of a square structure or a cylindrical structure, and the accommodating groove is formed in the longitudinal direction of the elastic body; the quantity of holding tank is a plurality of, and is a plurality of the holding tank is in the horizontal plane of elastomer is the rectangle and arranges.

5. The variable elastic member according to claim 4, further comprising:

the first installation seat is installed at the top end of the elastic body, and the second installation seat is installed at the bottom end of the elastic body.

6. The variable elastic member according to any one of claims 1 to 3, wherein the elastomer is a rubber material.

7. An engine mount characterized by comprising the variable elastic member according to any one of claims 1 to 6.

8. An engine comprising the engine mount of claim 7.

Images