CN115675214A

CN115675214A - Vibration damper, seat and car

Info

Publication number: CN115675214A
Application number: CN202211453497.3A
Authority: CN
Inventors: 陈淼; 曾艳军; 郭启寅
Original assignee: Shanghai New Era Robot Co ltd
Current assignee: Shanghai New Era Robot Co ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-02-03

Abstract

The invention discloses a vibration damping device, comprising: the movable platform is used for connecting a target to be damped; the pitching active vibration damping device is fixed on the bottom platform; the active pitching vibration damping device comprises a pitching motor; the roll active vibration damping device is arranged on the pitching active vibration damping device and is driven by the pitching motor to rotate around a rotating shaft of the pitching motor; the rolling active vibration damping device comprises a rolling motor and drives the rolling active vibration damping device to rotate; the vibration reduction output device comprises a guide post and an output support, the output support is fixed on the rolling active vibration reduction device, and a guide hole is formed in the output support; the guide post passes through the guiding hole and is connected with the movable platform. A seat and an automobile are also disclosed. The invention actively compensates the motors respectively arranged in the rolling direction and the pitching direction, and outputs the result through the guide post, thereby improving the stability of the vibration-damped target.

Description

Vibration damper, seat and car

Technical Field

The invention relates to a vibration damping device, in particular to a vibration damping device, a seat and an automobile.

Background

The vehicle generates multidimensional vibration during running, and the frequency component of the vibration signal is very complex. For example, when an automobile brakes and turns sharply, linear vibration in the front-back direction and the left-right direction is generated, so that the passengers are caused to generate motion acceleration in the pitch direction, the roll direction and other directions, and certain impact is caused to the passengers; the brake and the sharp turn have the characteristics of low occurrence frequency and obvious impact effect, and are easy to cause discomfort of passengers; further, as the vehicle speed increases, road surface excitation causes high-frequency vibration of the vehicle body, and in addition, excitation sources such as automobile engines excite high-frequency vibration of the vehicle body. These high and low frequency shock vibration signals will seriously affect passenger comfort and it is therefore necessary to take effective vibration damping measures. The passive control structure is simple, mainly realized by utilizing the deformation of materials containing spring damping characteristics, such as rubber, and the like, and can realize vibration reduction in a certain frequency range, but the vibration reduction effect on low-frequency vibration signals is very limited; the research on the aspect of active vibration reduction is less, at present, mechanisms with different degrees of freedom properties are generally adopted for motion compensation to overcome low-frequency large-amplitude vibration signals, but for high-frequency vibration signals, the compensation is often difficult due to the limited response bandwidth of a motor driving device.

Therefore, in order to reduce the influence of the linear acceleration and the centrifugal force on the riding comfort caused by braking and sharp turning in the driving process of the automobile, it is very important to design a damping device which has pitch and roll motion compensation and has the function of attenuating full-band signals.

Disclosure of Invention

In order to solve the problem that in the prior art, linear acceleration and centrifugal force caused by braking and sharp turning affect riding comfort, the invention provides a vibration damper, a seat and an automobile, and the specific technical scheme is as follows:

the present invention provides a vibration damping device, including: the movable platform is used for connecting a target to be damped;

a bottom platform on which a pitching active vibration damping device is fixed; the active pitch damping device comprises a pitch motor;

the roll active vibration damping device is arranged on the pitching active vibration damping device and driven by the pitching motor to rotate around a rotating shaft of the pitching motor;

the roll active vibration damping device comprises a roll motor and drives the roll active vibration damping device to rotate;

the vibration reduction output device specifically comprises a guide post and an output support, the output support is fixed on the rolling active vibration reduction device, and a guide hole is formed in the output support;

the guide post penetrates through the guide hole and is connected with the movable platform.

The active compensation is carried out through the motors respectively arranged in the roll direction and the pitch direction, and the output is carried out through the guide columns, so that the left-right and front-back shaking is reduced, the high-frequency vibration of the same platform is reduced, and the stability of a damped target is improved.

Preferably, the active pitch damping device further comprises: the pitching speed reducer comprises a pitching speed reducer support, a pitching speed reducer, a pitching motion output support and a bearing base;

the pitching speed reducer support is fixed on the bottom platform;

one end of the pitching speed reducer support is connected with a pitching motor, and the other end of the pitching speed reducer support is connected with the pitching speed reducer;

one end of the pitching motion output support is connected with the pitching speed reducer, and the other end of the pitching motion output support is connected with the bearing base; the bearing base is fixed on the bottom platform.

Preferably, the pitch motion output mount comprises in particular a pitch mounting base and a motor mounting block;

one end of the pitching installation base is fixedly installed on the pitching speed reducer, and the other end of the pitching installation base extends outwards along the center of the pitching installation base to form the motor installation block; the pitching installation base and the motor installation block are in a T-shaped structure;

the center of the motor mounting block is provided with a roll device mounting hole, and the roll active vibration damping device is mounted on the pitching motion output support through the roll device mounting hole.

Further preferably, the anti-collision device further comprises a pitching anti-collision block and a pitching anti-collision pad;

the pitching anti-collision pad is arranged on the bottom platform and is positioned below the pitching speed reducer support;

the pitching anti-collision blocks are arranged on two sides of the pitching motion output support and rotate along with the rotation of the pitching active vibration damping device;

when the pitching anti-collision block impacts the pitching anti-collision pad in the rotation process, the pitching anti-collision pad is matched with the pitching anti-collision block to limit the pitching active vibration reduction device to further rotate.

Further preferably, the roll active vibration damping device further includes: a roll reducer and a roll motion output support;

one surface of the rolling motion output support is connected with the output support, and the other surface of the rolling motion output support is connected with the rolling speed reducer;

one side of the rolling speed reducer is connected with the rolling motion output support, and the other side of the rolling speed reducer is connected with the pitching motion output support.

Further preferably, the rolling motion output support specifically comprises a mounting base and an output connecting block;

one surface of the mounting base is connected with the output connecting block, and the other surface of the mounting base is connected with the rolling speed reducer;

one end of the output connecting block is connected with the mounting base, and the other end of the output connecting block is connected with the output support.

Further preferably, a damper is further included; one end of the damper is connected to the output connecting block, and the other end of the damper is connected to the movable platform through a revolute pair.

Further preferably, the anti-collision device also comprises a roll anti-collision block and a roll anti-collision pad;

the rolling anti-collision pad is arranged on one side, close to the vibration damping output device, of the pitching motion output support;

the roll anti-collision block is arranged on the side surface of the mounting base and rotates along with the rotation of the roll motor;

when the rolling anti-collision block impacts the rolling anti-collision pad in the rotating process, the rolling anti-collision pad limits the rolling active vibration reduction device to further rotate.

Preferably, the rotation axis of the pitching motor and the rotation axis of the rolling motor are perpendicularly intersected all the time.

Preferably, a ball guide sleeve is arranged between the output support and the guide post; the output support moves up and down along the guide post through the ball guide sleeve.

Preferably, two ends of the guide post are provided with limiting bosses, and when the output support collides with the limiting bosses in the vertical movement process, the limiting bosses limit the output support to further move towards the edge of the guide post.

Further preferably, the method further comprises the following steps: a passive vibration damping device;

the passive vibration damping device specifically comprises an air spring, one end of the air spring is arranged on the movable platform, and the other end of the air spring is arranged on the bottom platform;

the bottom platform is also provided with an air pump which is connected with the air spring through an air pipeline and used for maintaining the pressure of the air spring.

Through the combination of active vibration reduction and passive vibration reduction, when high-frequency vertical vibration exists, the air spring can play a role of passive vibration isolation, and therefore the influence of the high-frequency vertical vibration on the stability of the movable platform is reduced.

Further preferably, an air pressure sensor is arranged in the air spring; the air pressure sensor is electrically connected with the air pressure automatic inflation control panel;

when the air pressure sensor detects that the air pressure in the air spring is lower than the preset air pressure, the air pressure automatic inflation control board controls the air pump to inflate the air spring through the air pipeline.

Further preferably, the number of the air springs is 4;

the air springs are respectively arranged at four corners of the movable platform.

Further preferably, the passive vibration damping device further comprises an air spring bottom pillar arranged on the bottom platform and used for fixedly connecting the air spring and the bottom platform;

the air pipeline is connected with the air spring through the air spring bottom column.

Preferably, the system further comprises an attitude sensor, a main control board and a motor driver;

the attitude sensor is electrically connected with the main control board and used for detecting the acceleration of the vibration-damped target to generate an acceleration signal and transmitting the acceleration signal to the main control board, and the main control board controls the motor driver to drive the pitching motor and the rolling motor to operate according to the acceleration signal.

By arranging the attitude sensor, the direction of active vibration reduction is judged by detecting the attitude sensor, so that the vibration reduction efficiency is effectively improved, and the comfort level of the vibration reduction process is increased.

Further preferably, when the attitude sensor detects a linear acceleration of the vibration-damped target, the main control board controls the motor driver to drive the operation of the pitch motor in accordance with the linear acceleration.

Further preferably, when the attitude sensor detects a centripetal acceleration of the vibration-damped target, the main control board controls the motor driver to drive the operation of the traverse motor according to the centripetal acceleration signal.

The invention also provides a seat, which comprises a seat body and the vibration damper; the seat body is fixed on a movable platform of the vibration damper.

The invention also provides an automobile using the seat.

The invention at least comprises the following technical effects:

(1) The motors respectively arranged in the rolling direction and the pitching direction are actively compensated, so that the left-right and front-back shaking is reduced, the high-frequency vibration of the same platform is reduced by outputting through the guide post, and the stability of a damped target is improved;

(2) Through the combination of active vibration reduction and passive vibration reduction, when high-frequency vertical vibration exists, the air spring can play a role of passive vibration isolation, so that the influence of the high-frequency vertical vibration on the stability of the movable platform is reduced;

(3) By arranging the attitude sensor, the direction of active vibration reduction is judged by detection of the attitude sensor, so that the vibration reduction efficiency is effectively improved, and the comfort level of the vibration reduction process is increased.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced 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 based on these drawings without inventive exercise.

FIG. 1 is a schematic front view of a vibration damping apparatus according to the present invention;

FIG. 2 is a schematic rear view of the vibration damping device of the present invention;

FIG. 3 is a schematic view of each limiting device of the vibration damping device of the present invention;

FIG. 4 is a schematic view of a bottom mounting platform of the present invention;

FIG. 5 is a schematic view of a pitch motion output mount according to the present invention;

FIG. 6 is a schematic structural diagram of an output support of the roll reducer of the present invention;

FIG. 7 is a schematic structural view of the vibration damping device of the present invention after the top movable platform is removed;

fig. 8 is a reference schematic view of respective vibration damping portions of the vibration damping device of the present invention.

The device comprises a bottom platform 1, a pitching motor 2, a pitching reducer support 3, a movable platform 4, a pitching motion output support 5, a rolling motor 6, an air pump 7, an air pressure automatic inflation control board 8, a main control board 9, an air spring bottom column 10, an air spring 11, a guide column support 12, a guide column 13, a ball guide sleeve 14, an output support 15, a damper 16, a rolling reducer 17, a bearing base 18, a pitching reducer 19, a pitching crash pad 20, a pitching crash pad 21, an air pipeline 22, a rolling crash pad 23, a rolling crash pad 24, a posture sensor 25, a motor driver 26, a power interface 27, an air spring bottom column mounting hole 28, a rolling crash pad mounting hole 29, a pitching reducer mounting hole 30, a pitching crash pad mounting hole 31, a rolling limit switch preformed hole 32, a rolling reducer mounting hole 33, a bearing base mounting hole 34, a rolling motor base mounting hole 35, a rolling crash pad mounting hole 36, a guide hole 37, a damper mounting hole 38, a rolling reducer mounting hole 39, a pitching reducer base 40, a pitching reducer mounting hole 41, a motor mounting hole 42, a connecting block output block 42, a connecting block 42, and an output support 15

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. Moreover, in an effort to provide a concise understanding of the drawings, components having the same structure or function may be shown in some of the drawings in a single schematic representation or may be labeled in multiple representations. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In addition, in the description of the present application, the terms "first," "second," and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

Example 1:

as shown in fig. 1 to 8, the present embodiment provides a vibration damping device including: the movable platform 4 is used for connecting a target to be damped; the device comprises a bottom platform 1, wherein a pitching active vibration damping device is fixed on the bottom platform 1; the active pitching damping device comprises a pitching motor 2; the roll active vibration damping device is arranged on the pitching active vibration damping device and is driven by the pitching motor 2 to rotate around a rotating shaft of the pitching motor 2; the roll active vibration damper comprises a roll motor 6 which drives the roll active vibration damper to rotate; the vibration reduction output device specifically comprises a guide post 13 and an output support 15, the output support 15 is fixed on the rolling active vibration reduction device, and a guide hole 37 is formed in the output support 15; one end of the guide column 13 is connected with the bottom platform 1, and the other end of the guide column passes through the guide hole 37 and is connected with the movable platform 4.

In this embodiment, the movable platform 4 is generally disposed at the bottom of a target to be damped, which may be a seat of a running automobile, or any device such as a seat on an airplane that may shake during movement. The base platform 1 is correspondingly fixed on the floor inside the vehicle such as an automobile or an airplane, and the base plate of the automobile or the airplane can be directly used as the corresponding base platform 1.

Taking an automobile as an example, in the driving process of the automobile, multidimensional vibration is generated, for example, linear vibration in the front-back direction is generated in the braking process, at this time, a movement acceleration in the pitching direction is generated for a passenger, so that the passenger pitches forwards and backwards, at this time, the pitching active vibration damping device starts the pitching motor 2 to rotate, and a reverse direction movement compensation is provided for the moving platform 4, so that the moving platform is not shaken forwards and backwards. Correspondingly, when the automobile is in a sharp turn, a centripetal acceleration in the left and right directions is generated, and at the moment, the transverse rolling motor 6 is required to give a centripetal acceleration in the left and right directions for carrying out reverse motion compensation.

More specifically, when the pitch motor 2 rotates, the pitch active damper device is caused to rotate integrally, and the output support 15 provided to the roll active damper device is caused to move, for example, when a backward pitch is encountered, the guide post 13 tilts backward, in which case, due to the output support 15, the pitch active damper device gives a forward force to the guide post 13 through the output support 15, thereby maintaining the attitude of the guide post 13, and the attitude of the movable platform 4 by maintaining the attitude of the guide post 13. Similarly, when the left lateral motion is encountered, the guide post 13 tilts left, and the roll motor 6 drives the roll active damping device to rotate, so that a right force is applied to the guide post 13 through the output support 15, thereby maintaining the posture of the guide post 13, and maintaining the posture of the platform by maintaining the posture of the guide post 13. On the mounting of the guide post 13, a guide post holder 12 is provided on the base for mounting the guide post 13.

If the acceleration motion in the directions of neither complete left-right nor complete front-back is encountered, the two motors are controlled to rotate according to the principle of force decomposition, and the active compensation motion is transmitted to the movable platform 4 through the vibration reduction output device.

This embodiment is through to setting up the motor of roll direction and pitch direction respectively, come the initiative compensation to export through guide post 13, thereby reduced and controlled and rock around, and then reduced the high-frequency vibration with the platform, thereby improved the stability by the damping target.

Preferably, the active pitch damping device further comprises: a pitching reducer support 3, a pitching reducer 19, a pitching motion output support 5 and a bearing base 18; the pitching speed reducer support 3 is fixed on the bottom platform 1; one end of the pitching speed reducer support 3 is connected with the pitching motor 2, and the other end of the pitching speed reducer support is connected with the pitching speed reducer 19; one end of the pitching motion output support 5 is connected with the pitching reducer 19, and the other end of the pitching motion output support is connected with the bearing base 18; the bearing base 18 is fixed on the bottom platform 1;

the pitching motion output support 5 specifically comprises a pitching mounting base 40 and a motor mounting block 41; one end of the pitching mounting base 40 is fixedly mounted on the pitching reducer 19, and the other end extends outwards along the center of the pitching mounting base 40 to form the motor mounting block 41; the pitching installation base 40 and the motor installation block 41 form a T-shaped structure;

the center of the motor mounting block 41 is provided with a roll device mounting hole, and the roll active vibration damping device is mounted on the pitching motion output support 5 through the roll device mounting hole.

In the aspect of the specific implementation of vibration reduction in the pitching direction, since the motor itself generally does not use a high-horsepower motor, and generally uses a small-horsepower servo motor, the torque force thereof is relatively small, and therefore a corresponding speed reducer needs to be arranged to output a larger torque force.

Specifically, a bearing base 18 and a pitching reducer support 3 are fixed on a bottom platform 1, one end of a pitching reducer 19 is connected with a pitching motor 2, the other end of the pitching reducer is connected with a pitching motion output support 5, the formed whole body spans between the bearing base 18 and the pitching reducer support 3, and a rolling active vibration damping device is installed through a rolling device installation hole.

More specifically, the pitch output support 5 has a T-shaped side surface, and a plurality of mounting holes are formed in the T-shaped structure of the pitch output support 5, including the pitch reducer mounting hole 30 formed in the bottom of the pitch mounting base 40, so that the pitch output support 5 is integrated with the pitch reducer 19 and the pitch motor 2 through the mounting holes. The active compensation movement of the pitch motor 2 is thus transmitted to the pitch output support 5, and the compensation is transmitted to the output support 15 via the roll active damping device arranged on the pitch output support 5. The roll device mounting holes specifically include roll reducer mounting holes 33, roll motor base mounting holes 35, are used for mounting roll reducers and roll motors respectively, and are provided with bearing base mounting holes 34 simultaneously for mounting bearing bases 34.

Further preferably, the pitch anti-collision device also comprises a pitch anti-collision block 21 and a pitch anti-collision pad 20; the pitch crash pad 20 is mounted on the bottom platform 1 below the pitch reducer mount 3; the pitch anti-collision blocks 21 are installed at both sides of the pitch motion output support 5 and rotate with the rotation of the pitch active damping device; when the pitch horn 21 hits the pitch horn 20 during rotation, the pitch horn 20 cooperates with the pitch horn 21 to limit further rotation of the pitch active damping device.

Meanwhile, in a specific rotation process, in order to prevent the pitching motion output support 5 from directly impacting the bottom platform 1 and thus damaging the bottom platform 1 or the pitching motion output support 5 itself, a pitching anti-collision pad 20 is arranged on the bottom platform 1, and corresponding pitching anti-collision blocks 21 are arranged at positions corresponding to two sides of the pitching motion output support 5, so that in the rotation process of the pitching motion output support 5, the rotation range is limited between two collision points of the pitching anti-collision blocks 21 and the pitching anti-collision pads 20.

More specifically, the pitch movement output mount 5 is provided with pitch impact prevention block mounting holes 31 which are divided into two sides of the pitch impact prevention block 5 on the axis of the longitudinal structure of the inverted trapezoidal T-shaped structure of the pitch mounting base 40, and which are used for mounting the pitch impact prevention block 21.

Further preferably, the roll active vibration damping device further includes: a roll speed reducer 17, a roll motion output support 15; one surface of the rolling motion output support 15 is connected with the output support 15, and the other surface is connected with the rolling speed reducer 17; one surface of the rolling speed reducer 17 is connected with the rolling motion output support 15, and the other surface of the rolling speed reducer is connected with the pitching motion output support 5; the rolling motion output support 15 specifically comprises a mounting base and an output connecting block 42; one surface of the mounting base is connected with the output connecting block 42, and the other surface of the mounting base is connected with the rolling speed reducer 17; one end of the output connecting block 42 is connected with the mounting base, and the other end is connected with the output support 15.

In the preferred embodiment, the roll movement means provided on the pitch movement output support 5 performs a pitch movement with the pitch movement output support 5 while performing a movement output through the roll reducer 17, because the roll motor 6 itself does not generally use a large horsepower motor, and generally uses a small horsepower servo motor, which has a relatively small torque, so that it is necessary to output a larger torque by providing a corresponding reducer. The mounting base arranged on the roll reducer 17 rotates along with the roll reducer 17 and drives the output connecting block 42 to rotate, and further, the motion is applied to the output support 15 for motion compensation. Meanwhile, a mounting hole 39 of the roll reducer is formed in the mounting base for mounting the roll reducer.

Further preferably, a damper 16 is also included; one end of the damper 16 is connected to the output connecting block 42, and the other end is connected to the movable platform 4 through a revolute pair.

In the preferred embodiment, by adding the damper 16 to the device, the damping effect is as good as possible, and the small friction and air resistance in the system can be compensated for, which can greatly improve the frequency response.

Specifically, the damper 16 is installed between the output connecting block 42 and the movable platform 4, the lower end of the damper 16 is fixed on the output connecting block 42 and is fixed through the damper installing hole 38 arranged on the output connecting block 42, the upper end of the damper is connected with the movable platform 4 through the revolute pair, the axis of the revolute pair is parallel to the rotation axis of the pitching motor 2, and the revolute pair is not broken due to the movement of the pitching motor 2 in the movement process because the axis of the revolute pair is parallel to the rotation axis of the pitching motor 2.

Further preferably, the vehicle bumper further comprises a roll crash block 23 and a roll crash pad 24; the roll crash pad 24 is arranged on the pitch motion output support 5 on the side close to the vibration damping output device; the roll anti-collision block 23 is arranged on the side surface of the mounting base and rotates along with the rotation of the roll motor 6; when the roll crash block 23 impacts the roll crash pad 24 during rotation, the roll crash pad 24 limits further rotation of the roll active vibration damping device.

In the present further preferred embodiment, in order to avoid that the output support 15 directly hits the bottom platform 1 during a specific rotation process, thereby causing damage to the bottom platform 1 or the output support 15 itself, a roll crash pad 24 is provided on the pitch motion output support 5 on a side close to the roll crash pad 24, and a corresponding roll crash block 23 is provided at a position corresponding to a side of the mounting base, so that a rotation range is limited between two collision points of the roll crash block 23 and the roll crash pad 24 during the rotation process of the output support 15.

In specific installation, the output connecting block 42 is used as a symmetry axis on the side surface and the top surface of the installation base, the roll anti-collision block installation holes 36 are symmetrically arranged, and the roll anti-collision pad installation hole 29 is arranged on one side of the pitching installation base 40 of the pitching motion output support 5 close to the output support 15 and used for installing the roll anti-collision pad 24. Meanwhile, a roll limit switch reserved hole 32 is reserved and used for reserving a refitting position for a future limit switch.

Preferably, the rotation axis of the pitching motor 2 and the rotation axis of the rolling motor 6 are perpendicularly intersected all the time.

Preferably, a ball guide sleeve 14 is arranged between the output support 15 and the guide column 13; the output support 15 moves up and down along the guide post 13 through the ball guide sleeve 14.

In the moving process, because there may be a large shake, if the output support 15 is rigidly connected to the guide post 13, the guide post 13 may be easily broken due to the shake being too large and the guide post 13 cannot bear so large force in the using process, so in this embodiment, the ball guide sleeve 14 is disposed between the output support 15 and the guide post 13, so that the output support 15 is not rigidly fixed to the guide post 13, but the output support 15 moves up and down on the guide post 13, thereby avoiding the breakage of the guide post 13 due to the rigid fixation.

Preferably, two ends of the guide post 13 are provided with limit bosses, and when the output support 15 collides with the limit bosses in the up-and-down movement process, the limit bosses limit the output support 15 to further move towards the edge of the guide post 13.

Example 2:

as shown in fig. 1 to 8, the present embodiment provides a vibration damping device including: the movable platform 4 is used for connecting a vibration-damped target; the device comprises a bottom platform 1, wherein a pitching active vibration damping device is fixed on the bottom platform 1; the active pitching damping device comprises a pitching motor 2; the roll active vibration damping device is arranged on the pitching active vibration damping device and is driven by the pitching motor 2 to rotate around a rotating shaft of the pitching motor 2; the roll active vibration damping device comprises a roll motor 6 which drives the roll active vibration damping device to rotate; the vibration reduction output device specifically comprises a guide post 13 and an output support 15, the output support 15 is fixed on the rolling active vibration reduction device, and a guide hole 37 is formed in the output support 15; the guide post 13 passes through the guide hole 37 to be connected with the movable platform 4.

Further comprising: a passive vibration damping device; the passive vibration damping device specifically comprises an air spring 11, one end of the air spring 11 is arranged on the movable platform 4, and the other end of the air spring 11 is arranged on the bottom platform 1; the bottom platform 1 is also provided with an air pump 7 which is connected with the air spring 11 through an air pipeline 22 and is used for maintaining the pressure of the air spring 11; the number of the air springs 11 is 4; the air springs 11 are respectively arranged at four corners of the bottom platform 1.

In the embodiment, while the active vibration reduction is provided, a passive vibration reduction device should be provided at the same time to achieve control of high-frequency vertical vibration, in terms of implementation, the air springs 11 distributed at four corners of the bottom platform 1 and the movable platform 4 are generally used to achieve passive vibration reduction, and the air pipe 22 extending to the air springs 11 is used to achieve connection of the air pump 7, so as to achieve maintenance of air pressure inside the air springs 11.

Taking the automobile as an example, when the movable platform 4 vibrates, the air springs 11 at the four corners of the bottom platform 1 are used as cushion pads to generate corresponding deformation, so that the movable platform 4 is buffered, and the influence of high-frequency vertical vibration on the movable platform 4 is eliminated.

In the embodiment, by combining active vibration reduction and passive vibration reduction, when high-frequency vertical vibration exists, the air spring 11 can play a role of passive vibration isolation, so that the influence of the high-frequency vertical vibration on the stability of the movable platform 4 is reduced.

Preferably, the air spring support structure further comprises an air spring bottom column 10 arranged on the bottom platform 1 and used for fixedly connecting the air spring 11 and the bottom platform 1; the air line 22 is connected to the air spring 11 via the air spring bottom pillar 10.

In the preferred embodiment, an air spring 11 bottom column mounting hole 10 is formed in the bottom platform 1, the air spring 11 bottom column 10 is mounted on the bottom platform 1 through the air spring 11 bottom column mounting hole 10, and an air pipeline 22 enters the air spring bottom column 10 from the air spring 11 bottom column mounting hole 10 formed in the bottom platform 1 and is connected to the air spring 11 through the air spring bottom column 10, so that the air pump 7 can inflate the air spring 11.

Further preferably, an air pressure sensor is arranged in the air spring 11; the air pressure sensor is electrically connected with an air pressure automatic inflation control plate 8;

when the air pressure sensor detects that the air pressure inside the air spring 11 is lower than the preset air pressure, the air pressure automatic inflation control board 8 controls the air pump 7 to inflate the air spring 11 through the air pipeline 22.

In the preferred embodiment, an air pressure sensor is arranged in the air spring 11 for detecting the air pressure condition in the air spring 11 and transmitting the air pressure to an air pressure automatic inflation control board 8 arranged on the base platform, and the air pump 7 is controlled by the air pressure automatic inflation control board 8.

More specifically, when the air pressure in the air spring 11 detected by the air pressure sensor is lower than the preset air pressure, the air pressure automatic inflation control board 8 sends an inflation command to control the air pump 7 to fill high-pressure air into the air spring 11 through the air pipeline 22, and the high-pressure air fills the air spring 11 through the air pipeline 22 and the air spring bottom pillar 10, so as to maintain the air pressure in the air spring 11 at a target value.

Example 3:

as shown in fig. 1 to 8, the present embodiment provides a vibration damping device including: the movable platform 4 is used for connecting a vibration-damped target; the device comprises a bottom platform 1, wherein a pitching active vibration damping device is fixed on the bottom platform 1; the active pitching damping device comprises a pitching motor 2; the roll active vibration damping device is arranged on the pitching active vibration damping device and is driven by the pitching motor 2 to rotate around a rotating shaft of the pitching motor 2; the roll active vibration damping device comprises a roll motor 6 which drives the roll active vibration damping device to rotate; the vibration reduction output device specifically comprises a guide post 13 and an output support 15, the output support 15 is fixed on the rolling active vibration reduction device, and a guide hole 37 is formed in the output support 15; one end of the guide column 13 is connected with the bottom platform 1, and the other end of the guide column passes through the guide hole 37 and is connected with the movable platform 4.

Further includes an attitude sensor 25, a main control board, and a motor driver 26; the attitude sensor 25 is electrically connected to the main control board, and is configured to detect an acceleration of the vibration-damped object to generate an acceleration signal, and transmit the acceleration signal to the main control board, and the main control board controls the motor driver 26 to drive the pitch motor 2 and the roll motor 6 to operate according to the acceleration.

In the present embodiment, an attitude sensor 25, a main control board, and a motor driver 26 are provided on the base platform 1, the attitude sensor 25 is generally implemented directly using an acceleration sensor for detecting the acceleration of the vibration-damped object, and the main control board implements drive control of the motor in accordance with the acceleration. Meanwhile, a power interface 27 is arranged on the bottom platform and used for supplying power to all electrical equipment and providing voltages of 48V and 12V.

Specifically, when the data transmitted from the attitude sensor 25 to the main control board makes the main control board consider that motion compensation is necessary, the main control board sends a corresponding driving signal to the motor driver 26, and the motor driver 26 sends a motion signal to the pitching motor 2 and the rolling motor 6 under the control of the driving signal, thereby controlling the operations of the pitching motor 2 and the rolling motor 6.

In the embodiment, the attitude sensor 25 is arranged, and the direction of active vibration reduction is judged by detecting the attitude sensor 25, so that the vibration reduction efficiency is effectively improved, and the comfort level of the vibration reduction process is increased.

Further preferably, when the attitude sensor 25 detects a linear acceleration of the vibration-damped object, the main control board controls the motor driver 26 to drive the operation of the pitch motor 2 in accordance with the linear acceleration.

In the preferred embodiment, taking an automobile as an example, when the attitude sensor 25 detects that a linear acceleration occurs, it indicates that a braking or acceleration occurs, a linear vibration in the front-back direction occurs during braking and acceleration, and a motion acceleration in the pitch direction occurs to the passenger, so as to cause the passenger to pitch back and forth, and at this time, the active pitch vibration damping device starts the pitch motor 2 to rotate, so as to provide a motion compensation in the opposite direction to the moving platform 4, so that the moving platform is not shaken back and forth.

Further preferably, when the attitude sensor 25 detects a centripetal acceleration of the vibration-damped object, the main control board controls the motor driver 26 to drive the operation of the roll motor 6 according to the centripetal acceleration.

In the preferred embodiment, taking an automobile as an example, when the attitude sensor 25 detects the occurrence of centripetal acceleration, it indicates that a sharp turn or the like occurs, and when the automobile is in a sharp turn, a left-right direction linear vibration is generated, and in this case, the roll motor 6 needs to give a left-right direction linear acceleration to perform reverse direction motion compensation so as not to sway.

Example 4:

the invention also provides a seat, which comprises a seat body and the vibration damping device in the embodiment 1-3; the seat body is fixed on a movable platform 4 of the vibration damper.

In the present embodiment, the vibration damping device is generally applied to a seat to compensate for vibration of the seat, and the seat may be installed in an automobile or an airplane and adjusted according to actual needs.

Example 5:

the invention also provides an automobile using the seat in the embodiment 4.

In this embodiment, a typical seat is applied to a vehicle for improving the comfort of the vehicle occupants.

Specifically, when the attitude sensor 25 detects that the linear acceleration occurs, it indicates that braking or acceleration occurs, linear vibration in the front-rear direction is generated during braking and acceleration, and at this time, a motion acceleration in the pitch direction is generated for the passenger, so that the passenger pitches forward and backward, and at this time, the pitch active vibration damping device starts the pitch motor 2 to rotate, so as to provide a motion compensation in the opposite direction to the moving platform 4, so that the moving platform is not shaken forward and backward. When the attitude sensor 25 detects that centripetal acceleration occurs, it indicates that a sharp turn or the like occurs, when the automobile makes a sharp turn, a centripetal vibration in the left-right direction is generated, and at this time, the roll motor 6 needs to give a centripetal acceleration in the left-right direction to perform motion compensation in the opposite direction, so that the automobile does not shake left and right.

The invention realizes the following through the embodiment: (1) The motors respectively arranged in the rolling direction and the pitching direction are actively compensated, so that the left-right and front-back shaking is reduced, the high-frequency vibration of the same platform is reduced by outputting through the guide post, and the stability of a damped target is improved;

(3) By arranging the attitude sensor, the direction of active vibration reduction is judged by detecting the attitude sensor, so that the vibration reduction efficiency is effectively improved, and the comfort level of the vibration reduction process is increased.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A vibration damping device, comprising:

the movable platform is used for connecting a target to be damped;

the active pitching vibration damping device comprises a bottom platform, wherein a pitching active vibration damping device is fixed on the bottom platform; the active pitch damping device comprises a pitch motor;

the roll active vibration damping device is arranged on the pitching active vibration damping device and is driven by the pitching motor to rotate around a rotating shaft of the pitching motor;

2. The damping device according to claim 1, wherein the active pitch damping device further comprises: the pitching speed reducer comprises a pitching speed reducer support, a pitching speed reducer, a pitching motion output support and a bearing base;

the pitching speed reducer support is fixed on the bottom platform;

3. Damping device according to claim 2, characterized in that the pitch motion output mount comprises in particular a pitch mounting base and a motor mounting block;

one end of the pitching installation base is fixedly installed on the pitching speed reducer, and the other end of the pitching installation base extends outwards along the center of the pitching installation base to form the motor installation block; the pitching installation base and the motor installation block are of a T-shaped structure;

the center of the motor mounting block is provided with a roll device mounting hole, and the roll active vibration damper is mounted on the pitching motion output support through the roll device mounting hole.

4. The vibration damping device according to claim 2, further comprising a pitch crash pad and a pitch crash pad;

the pitching anti-collision pad is arranged on the bottom platform and is positioned below the pitching reducer support;

5. The damping device according to claim 2, characterized in that the roll active damping device further comprises: a roll reducer and a roll motion output support;

6. The vibration damping device according to claim 5, wherein the roll motion output support comprises a mounting base and an output connecting block;

7. The vibration damping device according to claim 5, further comprising a damper; one end of the damper is connected to the output connecting block, and the other end of the damper is connected to the movable platform through a revolute pair.

8. The vibration damping device according to claim 6, further comprising a roll crash block and a roll crash pad;

9. A vibration damping device according to claim 1 wherein the axis of rotation of said pitch motor and the axis of rotation of said roll motor always intersect perpendicularly.

10. The vibration damping device according to claim 1, wherein a ball guide bush is provided between the output support and the guide post;

the output support moves up and down along the guide post through the ball guide sleeve.

11. The vibration damping device according to claim 1, wherein the guide post is provided at both ends thereof with limit bosses, and when the output support collides with the limit bosses during the up-and-down movement, the limit bosses limit the output support from further moving toward the edge of the guide post.

12. The vibration damping device according to claim 1 or 7, further comprising: a passive vibration damping device;

and the bottom platform is also provided with an air pump which is connected with the air spring through an air pipeline and is used for maintaining the pressure of the air spring.

13. A vibration damping device according to claim 12, wherein an air pressure sensor is provided in said air spring; the air pressure sensor is electrically connected with the air pressure automatic inflation control panel;

when the air pressure sensor detects that the air pressure in the air spring is lower than the preset air pressure, the air pressure automatic inflation control panel controls the air pump to inflate the air spring through the air pipeline.

14. A vibration damping device according to claim 12, wherein said number of air springs is 4;

15. The vibration damping device of claim 12 further comprising an air spring bottom post disposed on said bottom platform for fixedly connecting said air spring to said bottom platform;

16. The vibration damping device according to claim 1, further comprising an attitude sensor, a main control board, and a motor driver;

17. The vibration damping device according to claim 16, wherein when the attitude sensor detects a linear acceleration of the target to be damped, the main control board controls the motor driver to drive the operation of the pitch motor in accordance with the linear acceleration.

18. The vibration damping device according to claim 16, wherein when the attitude sensor detects a centripetal acceleration of the target to be damped, the main control board controls the motor driver to drive the operation of the traverse motor according to the centripetal acceleration signal.

19. A seat comprising a seat body and the vibration damping device according to any one of claims 1 to 18;

the seat body is fixed on a movable platform of the vibration damper.

20. An automobile, characterized in that the seat according to claim 19 is used.