Damping device, damping control method and vehicle

Abstract

The invention discloses a damping device, a damping control method and a vehicle. The damping device comprises a vibration excitation component, a plurality of vibration excited components, a plurality of counterweight containers, a plurality of frequency detection modules and a controller. The vibration excitation component generates vibration under a vibration excitation condition, and the vibration excitation component is mechanically connected with each vibration excited component; the plurality of counterweight containers are fixedly connected with the vibration excited parts respectively; the plurality of frequency detection modules and the vibration excited parts are fixedly arranged; the frequency detection module is used for acquiring the current vibration frequency of the vibration excited component; and the controller is respectively connected with the frequency detection module and each counterweight container, and is used for controlling the weight of each counterweight container according to the preset frequency range and the current vibration frequency of each vibration excited part. According to the technical scheme, the stability and the working reliability of the vibration excited component can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of shock absorption, and in particular to a shock absorption device, a shock absorption control method and a vehicle. Background Art

[0002] When heavy trucks are driving on the road, they will generate vibration excitation under the influence of factors such as road conditions and environmental conditions. This excitation will be transmitted to components such as the cab, after-treatment system, battery frame, and urea supply module through the frame. When the excitation frequency is close to the natural frequency of the above-mentioned components, it will cause resonance of the components, resulting in a decrease in the stability and reliability of core components, affecting the user experience of the driver or passengers.

[0003] Abnormal vibration caused by resonance is usually solved by adjusting the weight of the component, but this adjustment is one-time and cannot be adaptively adjusted to different working conditions. Repeated changes to the component structure will also increase development costs. Summary of the Invention

[0004] The present invention provides a shock absorbing device, a shock absorbing control method and a vehicle, so as to reduce the vibration risk of a vibration-excited component and improve the stability and working reliability of the vibration-excited component.

[0005] In a first aspect, the present invention provides a shock absorbing device, comprising:

[0006] a vibration excitation component that generates vibrations under vibration excitation conditions;

[0007] a plurality of vibration-excited components, wherein the vibration-exciting component is mechanically connected to each of the vibration-excited components;

[0008] A plurality of counterweight containers are fixedly connected to each of the vibration-excited components;

[0009] A plurality of frequency detection modules are fixedly arranged with each of the vibration-excited components; the frequency detection modules are used to obtain the current vibration frequency of the vibration-excited components;

[0010] The controller is connected to the frequency detection module and each of the counterweight containers, and is used to control the weight of each of the counterweight containers according to the preset frequency range of each of the vibration-excited components and the current vibration frequency.

[0011] Optionally, the shock absorbing device further comprises: a liquid storage tank, a first pump body, a second pump body and a plurality of control valves;

[0012] The liquid storage tank is used to store liquid;

[0013] The first inlet and outlet of the control valve are communicated with the first inlet and outlet of the first pump body, the second inlet and outlet of the control valve are communicated with the liquid port of the weight container, and the third inlet and outlet of the control valve are communicated with the third inlet and outlet of the second pump body;

[0014] The liquid outlet of the liquid storage tank is communicated with the second inlet and outlet of the first pump body and the fourth inlet and outlet of the second pump body respectively;

[0015] The controller is also electrically connected to the first pump body and the second pump body, and is also used to control the first pump body to transfer the liquid in the liquid storage tank to the counterweight container, and to control the second pump body to transfer the liquid in the counterweight container to the liquid storage tank.

[0016] Optionally, the shock absorbing device further comprises:

[0017] a plurality of acceleration detection modules, each of which is located in the vibration excitation component and each of the vibration excited components, and configured to detect a first vibration acceleration of the vibration excited component and a second vibration acceleration of the vibration excited component;

[0018] The controller is also electrically connected to each of the acceleration detection modules, and is further used to control the weight of each of the counterweight containers according to each of the preset frequency ranges, the current vibration frequency, the first vibration acceleration, and each of the second vibration accelerations.

[0019] Optionally, the shock absorbing device further comprises:

[0020] A plurality of weight detection modules, each of which is located in each of the weighted containers, and is used to detect the current weight of the liquid in the weighted container;

[0021] The controller is also electrically connected to each of the weight detection modules, and is further configured to control the weight of each of the weighted containers according to each of the preset frequency ranges, the current vibration frequency, and the current liquid weight;

[0022] Wherein, an energy consumption structure is provided at the bottom of the counterweight container.

[0023] In a second aspect, the present invention provides a vibration reduction control method, which is performed using the vibration reduction device described in the first aspect. The vibration reduction control method includes:

[0024] Obtaining the current vibration frequency and the preset frequency range of the vibration-excited component;

[0025] Determining whether the current vibration frequency is within the preset frequency range;

[0026] If so, the weight of the counterweight container is adjusted.

[0027] Optionally, adjusting the weight of the counterweight container includes:

[0028] Determining whether the current liquid weight in the weight container is less than or equal to a preset lower limit;

[0029] If so, the first inlet and outlet of the control valve are controlled to communicate with the second inlet and outlet, and the first pump body is controlled to be in a working state, so that the first pump body transfers the liquid in the liquid storage tank to the counterweight container.

[0030] Optionally, if the current liquid weight in the counterweight container is greater than the preset lower limit value and less than the preset upper limit value, the second inlet and outlet of the control valve are controlled to be connected to the third inlet and outlet, and the second pump body is controlled to be in a working state so that the second pump body transfers the liquid in the counterweight container to the liquid storage tank.

[0031] Optionally, when the first pump body is in the working state, a first vibration acceleration of the vibration exciting component and a second vibration acceleration of the vibration excited component are obtained;

[0032] determining whether a ratio of the second vibration acceleration to the first vibration acceleration is less than a preset ratio;

[0033] If so, the first pump body is controlled to be in a non-working state, and the passage between the first inlet and the second inlet is disconnected.

[0034] Optionally, if the ratio of the second vibration acceleration to the first vibration acceleration is greater than or equal to the preset ratio, and the current liquid weight of the counterweight container is less than the preset weight, the step of controlling the first pump body to be in the working state is returned to.

[0035] Optionally, if the current vibration frequency is within the preset frequency range, obtaining the current weight of the liquid in the weight container;

[0036] Determining whether the current liquid weight is greater than a preset lower limit;

[0037] If so, the second inlet and outlet of the control valve are controlled to be connected to the third inlet and outlet, and the second pump body is controlled to be in a working state, so that the second pump body transfers the liquid in the counterweight container to the liquid storage tank until the current liquid weight is less than or equal to the preset lower limit value.

[0038] In a third aspect, the present invention provides a vehicle, comprising the shock absorbing device according to the first aspect;

[0039] Wherein, the controller in the shock absorption device is used to execute the shock absorption control method described in the second aspect.

[0040] The technical solution provided by the present invention is to set up multiple counterweight containers fixedly connected to each vibration excited component, so that under the vibration action of the vibration exciting component, when the current vibration frequency of the vibration excited component is within the preset frequency range of the vibration excited component, the controller can adjust the weight of the counterweight container fixedly connected to the vibration excited component, and then adjust the preset frequency range corresponding to the vibration excited component, so that the current vibration frequency exceeds the preset frequency range, thereby avoiding resonance of the vibration excited component and improving the stability and working reliability of the vibration excited component. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic structural diagram of a shock absorbing device provided in an embodiment of the present invention;

[0042] Figure 2 A schematic structural diagram of another shock absorbing device provided by an embodiment of the present invention;

[0043] Figure 3 A schematic structural diagram of another shock absorbing device provided in an embodiment of the present invention;

[0044] Figure 4 A schematic structural diagram of another shock absorbing device provided in an embodiment of the present invention;

[0045] Figure 5 A schematic structural diagram of a counterweight container provided in an embodiment of the present invention;

[0046] Figure 6 A flowchart of a vibration reduction control method provided by an embodiment of the present invention;

[0047] Figure 7 A flowchart of another vibration reduction control method provided by an embodiment of the present invention;

[0048] Figure 8 A flowchart of another vibration reduction control method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0049] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0050] Figure 1 A schematic structural diagram of a shock absorbing device provided by an embodiment of the present invention is shown in FIG. Figure 1As shown, the shock absorbing device includes a vibration excitation component 10, a plurality of vibration excited components 20, a plurality of counterweight containers 30, a plurality of frequency detection modules 40 and a controller 50. The vibration excitation component 10 generates a vibration signal under vibration excitation conditions. The vibration excitation component 10 is mechanically connected to each vibration excited component 20. A plurality of counterweight containers 30 are fixedly connected to each vibration excited component 20, respectively. A plurality of frequency detection modules 40 are fixedly arranged with each vibration excited component 20, and the frequency detection module 40 is used to obtain the current vibration frequency of the vibration excited component 20. The controller 50 is connected to the frequency detection module 40 and each counterweight container 30, respectively, and is used to control the weight of each counterweight container 30 according to the preset frequency range and current vibration frequency of each vibration excited component 20.

[0051] Among them, the vibration excitation conditions include road bumps, large environmental wind resistance, etc. Under the vibration excitation conditions, the vibration excitation component 10 will generate vibration under the influence of the vibration excitation conditions. The vibration excited component 20 can be mechanically connected to the vibration excitation component 10 by welding, hanging or bolting. The counterweight container 30 may include a liquid storage bag or a liquid storage box, etc. The material of the counterweight container 30 includes rubber or plastic, etc., which can be set according to actual needs. The frequency detection module 40 includes devices such as piezoelectric sensors or acceleration sensors for obtaining vibration frequencies. When the shock absorber is used in a vehicle, the vibration excitation component 10 includes a vehicle frame, and the vibration excited component 20 includes a post-processor, a battery frame, a cab, a urea tank, a fairing or a fender, etc., which can be set according to actual needs.

[0052] It is understandable that the number of vibration-excited components 20 can be set according to actual needs. Figure 1 The figure only shows that the shock-absorbing device includes n vibration-excited components 20, namely, vibration-excited component 21, vibration-excited component 22, ..., vibration-excited component 2n. The number of counterweight containers 30 is consistent with the number of vibration-excited components 20, namely, counterweight container 31 fixedly mounted on vibration-excited component 21, counterweight container 32 fixedly mounted on vibration-excited component 22, ..., counterweight container 3n fixedly mounted on vibration-excited component 2n. The number of frequency detection modules 40 is consistent with the number of vibration-excited components 20, namely, frequency detection module 41 fixedly mounted on vibration-excited component 21, frequency detection module 42 fixedly mounted on vibration-excited component 22, ..., frequency detection module 4n fixedly mounted on vibration-excited component 2n.

[0053] It should be noted that, under the influence of the external environment, the vibration excitation component 10 first generates vibration. Since the vibration excitation component 10 is mechanically connected to the vibration excited component 20, the vibration generated by the vibration excitation component 10 will be transmitted to the vibration excited component 20. When the vibration frequency transmitted by the vibration excitation component 10 to the vibration excited component 20 is close to or equal to the natural frequency of the vibration excited component 20, it will cause the vibration excited component 20 to resonate, resulting in severe vibration, affecting the stability and working reliability of the vibration excitation component 20 itself. In order to solve this problem, the technical solution of the present invention is to set a counterweight container 30 fixedly connected to the vibration excited component 20 and adjust the weight of the counterweight container 30 to avoid the resonance problem. The specific principle is described below.

[0054] Specifically, since the natural frequency of a device is related to the weight of the device itself, the heavier the device itself is, the lower the natural frequency of the device. The preset frequency range is related to the natural frequency of the vibration-excited component 20. For example, the natural frequency of the vibration-excited component 20 is 50 Hz, and the preset frequency range of the vibration-excited component 20 is 49 Hz to 51 Hz. Therefore, when the current vibration frequency of the vibration-excited component 20 obtained by the frequency detection module 40 is within the preset frequency range of the vibration-excited component 20, it means that the current vibration frequency generated by the vibration-excited component 20 under the influence of the vibration of the vibration-exciting component 10 is close to or equal to the natural frequency of the vibration-excited component 20. At this time, the controller 50 can increase the weight of the counterweight container 30 fixed to the vibration-excited component 20 to change the natural frequency and the preset frequency range of the vibration-excited component 20, so that the current vibration frequency is different from the preset frequency range corresponding to the adjusted vibration-excited component 20 as a whole, thereby avoiding resonance and improving the stability and working reliability of the vibration-excited component 20.

[0055] The technical solution of the present invention is to set up multiple counterweight containers fixedly connected to each vibration excited component, so that under the vibration action of the vibration excited component, when the current vibration frequency of the vibration excited component is within the preset frequency range of the vibration excited component, the controller can adjust the weight of the counterweight container fixedly connected to the vibration excited component, and then adjust the preset frequency range corresponding to the vibration excited component, so that the current vibration frequency exceeds the preset frequency range, thereby avoiding resonance of the vibration excited component and improving the stability and working reliability of the vibration excited component.

[0056] Optional, Figure 2 A schematic structural diagram of another shock absorbing device provided by an embodiment of the present invention is shown in FIG. Figure 2As shown, the shock absorber device also includes a liquid storage tank 01, a first pump body 71, a second pump body 72, and a plurality of control valves 80. The liquid storage tank 01 is used to store liquid. The first inlet and outlet of the control valve 80 are connected to the first inlet and outlet of the first pump body 71, the second inlet and outlet of the control valve 80 are connected to the liquid port of the counterweight container 30, and the third inlet and outlet of the control valve 80 are connected to the third inlet and outlet of the second pump body 72. The liquid outlet of the liquid storage tank 01 is respectively connected to the second inlet and outlet of the first pump body 71 and the fourth inlet and outlet of the second pump body 72. The controller 50 is also electrically connected to the first pump body 71 and the second pump body 72. The controller 50 is also used to control the first pump body 71 to transfer liquid from the liquid storage tank 01 to the counterweight container 30, and to control the second pump body 72 to transfer liquid from the counterweight container 30 to the liquid storage tank 01.

[0057] Among them, the material of the liquid storage tank 01 includes plastic or metal, the shape of the liquid storage tank 01 includes spherical or rectangular, the first pump body 71 and the second pump body 72 include axial flow pumps, mixed flow pumps or vortex pumps, etc., the control valve 80 includes a T-type three-way valve, etc., which can be set according to actual needs and is not specifically limited here.

[0058] Specifically, the liquid stored in the liquid storage tank 01 includes water, etc., and the flow rate of the liquid is increased by providing a first pump body 71 and a second pump body 72. When the first inlet and the second inlet of the control valve 80 are connected, and the liquid in the liquid storage tank 01 needs to be transferred to the counterweight container 30, the provision of the first pump body 71 can increase the speed and efficiency of the liquid transfer to the counterweight container 30, thereby increasing the weight change rate of the liquid in the counterweight container 30, thereby increasing the weight change rate of the vibration-excited component 20 and the counterweight container 30 fixedly mounted thereto, and thereby rapidly changing the natural frequency and preset frequency range of the vibration-excited component 20 and the counterweight container 30 fixedly mounted thereto, thereby avoiding resonance of the vibration-excited component 20. In addition, when the third inlet and outlet of the control valve 80 are connected to the second inlet and outlet, and the liquid in the counterweight container 30 needs to be transported to the liquid storage tank 01, the second pump body 72 can be set to increase the speed and efficiency of liquid transmission to the liquid storage tank 01, thereby ensuring the weight of the liquid in the liquid storage tank 01, so that when other counterweight containers 72 need liquid, they can be obtained from the liquid storage tank 01, thereby improving the overall working reliability of the shock absorber device.

[0059] Optional, Figure 3A structural schematic diagram of another shock absorbing device provided for an embodiment of the present invention, as shown in the figure, the shock absorbing device also includes a plurality of acceleration detection modules 90, the acceleration detection modules 90 are located in the vibration excitation component 10 and each vibration excited component 20, the acceleration detection modules 90 are used to detect the first vibration acceleration of the vibration excited component 20, and the second vibration acceleration of the vibration excited component 20; the controller 50 is also electrically connected to each acceleration detection module 90, and the controller 50 is also used to control the weight of each counterweight container 30 according to each preset frequency range, the current vibration frequency, the first vibration acceleration and each second vibration acceleration.

[0060] The acceleration detection module 90 includes a piezoelectric acceleration sensor, a capacitive acceleration sensor, a piezoresistive acceleration sensor, or a servo-type acceleration sensor, and can be configured according to actual needs, without specific limitation herein. The vibration detection module 90 includes a vibration detection module 91 fixedly mounted on the vibration-excited component 21, a vibration detection module 92 fixedly mounted on the vibration-excited component 22, ..., a vibration detection module 9n fixedly mounted on the vibration-excited component 2n, and a vibration detection module 9m fixedly mounted on the vibration-exciting component 10.

[0061] Specifically, the acceleration detection module 90 obtains a first vibration acceleration of the vibration excitation component 10 in a vibrating state and a second vibration acceleration of the vibration excited component 20 in a vibrating state. If the controller 50 adjusts the weight of the counterweight container according to the current vibration frequency and the preset frequency range, and the ratio of the first vibration acceleration to the second vibration acceleration is greater than the preset value, it means that the vibration excited component 20 is still in a resonant state. At this time, the controller 50 can continue to adjust the weight of the counterweight container 30 to adjust the weight of the vibration excited component 20 and the counterweight container 30 as a whole, and further change the preset frequency range corresponding to the vibration excited component 20 and the counterweight container 30 as a whole, so that the current vibration frequency exceeds the preset frequency range, thereby preventing the vibration excited component 20 from continuing to resonate and improving the stability of the vibration excited component 20.

[0062] Optional, Figure 4 A schematic structural diagram of another shock absorbing device provided by an embodiment of the present invention is shown. Figure 5 A structural diagram of a counterweight container provided by an embodiment of the present invention, referring to Figure 4 and Figure 5 The shock absorption device also includes multiple weight detection modules 60, each weight detection module 60 is located in each counterweight container 30, and the weight detection module 60 is used to detect the current liquid weight in the counterweight container 30; the controller 50 is also electrically connected to each weight detection module 60, and the controller 50 is also used to control the weight of each counterweight container 30 according to each preset frequency range, the current vibration frequency and the current liquid weight.

[0063] The bottom of the weighted container 30 is equipped with an energy dissipation structure 02. This structure, which includes rubber brushes and other components, can be customized to meet specific needs. This structure agitates the liquid in the weighted container 30 to dissipate the energy generated by vibration, reducing its impact on the vibrating component 20 and improving the passenger experience.

[0064] Specifically, the weight detection module 60 includes a strain gauge weighing sensor, a piezoelectric force sensor, a capacitive weighing sensor, or an electromagnetic balance sensor, and can be configured according to actual needs. The weight detection module 60 is used to obtain the current liquid weight of the counterweight container 30. When the controller 50 obtains that the current vibration frequency is within the preset frequency range, after providing a certain amount of liquid to the counterweight container 30, the adjusted preset frequency range corresponding to the vibrating excited component 20 can be determined based on the current liquid weight. If the current vibration frequency exceeds the adjusted preset frequency range, the adjustment of the liquid weight in the counterweight container 30 is stopped, thereby avoiding energy waste caused by providing a large amount of liquid to the counterweight container 30 at one time.

[0065] It should be noted that, continue to refer to Figure 5 The weighted container 30 includes a liquid port 302 for delivering liquid into or out of the weighted container 30. The weighted container 30 also includes an exhaust hole 301 to ensure that the atmospheric pressure in the weighted container 30 is consistent with that in the outside world, thereby improving the reliability of supplying or outputting liquid to or from the weighted container 30. Figure 5 The exhaust hole 301 of the counterweight container 30 is shown only as an example. The actual structure and position of the exhaust hole 301 need to be set according to the actual structure of the counterweight container 30 and are not specifically limited here.

[0066] Based on the same inventive concept, an embodiment of the present invention provides a vibration reduction control method, which is suitable for reducing the vibration risk of vibration-excited components. The vibration reduction control method is executed using the vibration reduction device provided by any embodiment of the present invention. Figure 6 A flowchart of a vibration reduction control method provided by an embodiment of the present invention is shown in FIG. Figure 6 As shown, the vibration reduction control method includes:

[0067] S101: Acquire the current vibration frequency and preset frequency range of the vibration-excited component.

[0068] Among them, the preset frequency range is related to the natural frequency of the vibrating excited component. The natural frequency refers to the constant frequency maintained by a solid when it is in free vibration without interference from external forces. The natural frequency is related to parameters such as the weight of the object. The heavier the object, the smaller the natural frequency. The lower limit of the preset frequency range is the difference between the natural frequency and the preset value, and the upper limit of the preset frequency range is the sum of the natural frequency and the preset value. For example, if the natural frequency of the vibrating excited component is 50Hz and the preset value is 1Hz, then the preset frequency range is 49Hz to 51Hz.

[0069] Specifically, the current vibration frequency of the vibration-excited component can be obtained through the frequency detection module. The natural frequency can be obtained through the nameplate or setting parameters of the vibration-excited component, and then the preset frequency range is determined according to the natural frequency. By setting the preset frequency range, when the current vibration frequency is within the preset frequency range but is equal to the natural frequency, that is, when the vibration-excited component has not yet resonated, the counterweight container can be adjusted to reduce the resonance duration of the vibration-excited component and reduce the resonance risk of the vibration-excited component. Among them, the upper limit value of the preset frequency range does not exceed 1.4 times the natural frequency, and the lower limit value of the preset frequency range does not exceed -1.4 times the natural frequency, so as to avoid the large difference between the preset frequency range and the natural frequency and fail to play the role of vibration risk protection.

[0070] S102: Determine whether the current vibration frequency is within a preset frequency range; if so, execute S103.

[0071] Specifically, if the current vibration frequency is within the preset frequency range, it means that the current vibration frequency is close to or equal to the natural frequency of the vibration excited component. If the vibration excited component is not adjusted in time, the vibration excited component will resonate under the action of the current vibration frequency, affecting the stability of the vibration excited component.

[0072] S103: Adjust the weight of the counterweight container.

[0073] Specifically, if the current vibration frequency is within the preset frequency range, it means that the current vibration frequency is close to or equal to the natural frequency of the vibration excited component. At this time, the weight of the counterweight container can be increased or reduced, thereby changing the preset frequency range of the whole composed of the vibration excited component and the counterweight container, and then making the current vibration frequency exceed the adjusted preset frequency range, avoiding resonance of the vibration excited component, and improving the stability and working reliability of the vibration excited component.

[0074] The technical solution of the embodiment of the present invention is to obtain the current vibration frequency and preset frequency range of the vibrating excited component. If the current vibration frequency is within the preset frequency range, it means that the current vibration frequency is close to or equal to the natural frequency of the vibrating excited component. At this time, the weight of the counterweight container can be increased or reduced, thereby changing the preset frequency range of the whole composed of the vibrating excited component and the counterweight container, and then making the current vibration frequency exceed the adjusted preset frequency range, thereby avoiding resonance of the vibrating excited component and improving the stability and working reliability of the vibrating excited component.

[0075] In an optional embodiment, the embodiment of the present invention describes the case of adjusting the weight of the counterweight container. Figure 7 A flowchart of another damping control method provided by an embodiment of the present invention is shown in FIG. Figure 7 As shown, the vibration reduction control method includes:

[0076] S201: Acquire the current vibration frequency and preset frequency range of the vibration-excited component.

[0077] S202: Determine whether the current vibration frequency is within a preset frequency range; if so, execute S203.

[0078] S203, determine whether the current liquid weight in the weight container is less than or equal to the preset lower limit; if so, execute 204; if not, execute 205.

[0079] The preset lower limit value may be a fixed value or a non-fixed value, and may be set according to the size and structure of the counterweight container, and is not specifically limited here.

[0080] S204, controlling the first inlet and outlet of the control valve to communicate with the second inlet and outlet, and controlling the first pump body to be in a working state, so that the first pump body transfers the liquid in the liquid storage tank to the counterweight container.

[0081] Specifically, if the current liquid weight in the counterweight container is less than or equal to a preset lower limit, it indicates that the current liquid in the counterweight container is low. If the liquid in the counterweight container is pumped out to avoid resonance, the preset frequency range will have little or no impact. In this case, the first inlet and second inlet of the control valve can be controlled to communicate with each other, so that after the first pump body is in an operating state, the liquid in the liquid storage tank can be transferred to the counterweight container, thereby increasing the weight of the liquid in the counterweight container.

[0082] Optionally, when the first pump body is in a working state, the first vibration acceleration of the vibration excitation component and the second vibration acceleration of the vibration excited component are obtained; it is determined whether the ratio of the second vibration acceleration to the first vibration acceleration is less than a preset ratio; if so, the first pump body is controlled to be in a non-working state, and the passage between the first inlet and outlet and the second inlet and outlet is disconnected.

[0083] The preset ratio may be a fixed value and may be set according to actual needs. Optionally, the preset ratio ranges from 1.1 to 1.4. In an exemplary embodiment, the preset ratio is 1.2.

[0084] Specifically, while liquid is supplied to the counterweight container through the first pump body, if the ratio of the second vibration acceleration of the vibration excited component to the first vibration acceleration of the vibration exciting component is less than the preset ratio, it means that the vibration degree of the vibration excited component is less than that of the vibration exciting component, indicating that the vibration excited component has not resonated. At this time, the first pump body can be controlled to be in a non-working state, and the passages between the first inlet and outlet and the second inlet and outlet can be disconnected to avoid continuing to transport liquid into the counterweight container, resulting in energy loss.

[0085] Optionally, if the ratio of the second vibration acceleration to the first vibration acceleration is greater than or equal to a preset ratio, and the current liquid weight of the counterweight container is less than a preset weight, the process returns to executing the step of controlling the first pump body to be in a working state.

[0086] The preset weight may be the upper limit of the weight that the weighted container can hold liquid. If the current liquid weight of the weighted container is greater than or equal to the preset weight, it indicates that the weighted container has already stored a large amount of liquid and no further liquid can be supplied to the weighted container.

[0087] Specifically, if the ratio of the second vibration acceleration of the vibration excited component to the first vibration acceleration of the vibration exciting component is greater than or equal to the preset ratio, it means that the vibration degree of the vibration excited component is greater than that of the vibration exciting component, indicating that the vibration excited component resonates. At this time, if the current liquid weight of the counterweight container is less than the preset weight, the liquid can continue to be transported into the counterweight container, so that the first inlet and outlet of the control valve remain connected to the second inlet and outlet, and the first pump body is still in working condition, so that the first pump body transfers the liquid in the liquid storage tank to the counterweight container.

[0088] S205: Control the second inlet and outlet of the control valve to communicate with the third inlet and outlet, and control the second pump body to be in a working state, so that the second pump body transfers the liquid in the counterweight container to the liquid storage tank.

[0089] Specifically, if the current liquid weight in the counterweight container is greater than a preset lower limit, it indicates that the counterweight container currently stores a large amount of liquid. Continuing to transfer liquid to the counterweight container at this time may result in more liquid being stored in the counterweight container, resulting in less liquid being stored in the liquid storage tank, thereby affecting the adjustment of the liquid weight in other counterweight containers. Therefore, the second inlet and outlet of the control valve can be controlled to communicate with the third inlet and outlet, so that after the second pump body is in an operating state, the liquid in the counterweight container can be transferred to the liquid storage tank, thereby reducing the weight of the liquid in the counterweight container, achieving adjustment within the preset frequency range, avoiding resonance of the vibrating excited component, and improving the stability of the vibrating excited component.

[0090] The technical solution of the embodiment of the present invention obtains the current vibration frequency and a preset frequency range of the vibrating excited component. If the current vibration frequency is within the preset frequency range and the current weight of the liquid in the counterweight container is less than or equal to a preset lower limit, the first inlet and second inlet of the control valve are controlled to communicate with each other, and the first pump body is controlled to be in an operating state, so that the first pump body transfers the liquid in the liquid storage tank to the counterweight container, thereby increasing the weight of the liquid in the counterweight container. If the current vibration frequency is within the preset frequency range and the current weight of the liquid in the counterweight container is greater than the preset lower limit, the second inlet and third inlet of the control valve are controlled to communicate with each other, and the second pump body is controlled to be in an operating state, so that the second pump body transfers the liquid in the counterweight container to the liquid storage tank, thereby reducing the weight of the liquid in the counterweight container. In this way, by adjusting the weight of the liquid in the counterweight container, the weight of the counterweight container, as well as the natural frequency and preset frequency range of the counterweight container and the vibrating excited component as a whole, are adjusted so that the current vibration frequency exceeds the adjusted preset frequency range, thereby preventing resonance of the vibrating excited component and improving the stability of the vibrating excited component.

[0091] In an optional embodiment, the embodiment of the present invention describes the case where the current vibration frequency is within a preset frequency range. Figure 8 A flowchart of another damping control method provided by an embodiment of the present invention is shown in FIG. Figure 8 As shown, the vibration reduction control method includes:

[0092] S301: Acquire the current vibration frequency and preset frequency range of the vibration-excited component.

[0093] S302: Determine whether the current vibration frequency is within a preset frequency range; if so, execute S303; if not, execute S304.

[0094] S303: Adjust the weight of the counterweight container.

[0095] S304: Obtain the current weight of the liquid in the weight container.

[0096] Specifically, if the current vibration frequency is not within the preset frequency range, it indicates that the risk of resonance of the vibrating excited component is low or no resonance will occur. In this case, the weight detection module can obtain the current weight of the liquid in the counterweight container so that the weight of the liquid in the counterweight container can be adjusted based on the current liquid weight.

[0097] S305: Determine whether the current liquid weight is greater than a preset lower limit; if so, execute S306.

[0098] The preset lower limit value may be a fixed value or a non-fixed value, and may be set according to the size and structure of the counterweight container, and is not specifically limited here.

[0099] S306. Control the second inlet and outlet of the control valve to be connected to the third inlet and outlet, and control the second pump body to be in a working state, so that the second pump body transfers the liquid in the counterweight container to the liquid storage tank until the current liquid weight is less than or equal to the preset lower limit value.

[0100] Specifically, if the current liquid weight is greater than a preset lower limit, it indicates that a large amount of liquid is currently stored in the counterweight container. At this point, the second inlet and the third inlet of the control valve can be controlled to communicate, so that after the second pump body is in operation, the liquid in the counterweight container can be transferred to the liquid storage tank, thereby reducing the liquid stored in the counterweight container until the current liquid weight is less than or equal to the preset lower limit. This increases the liquid storage tank, ensures the liquid demand of other counterweight containers, and improves the overall operational reliability of the shock absorber.

[0101] It should be noted that if, during the process of transferring the liquid in the counterweight container to the liquid storage tank, the current vibration frequency is within the preset frequency range of the whole formed by the counterweight container and the vibration excited component, the weight of the liquid in the counterweight container can be increased, or the weight of the liquid in the counterweight container can be further reduced, so that the current vibration frequency exceeds the preset frequency range of the whole formed by the vibration excited component and the counterweight container, thereby reducing the resonance risk of the vibration excited component.

[0102] The technical solution of the present invention is to obtain the current vibration frequency and the preset frequency range of the vibrating excited component, and if the current vibration frequency is within the preset frequency range, adjust the weight of the counterweight container. If the current vibration frequency exceeds the preset frequency range, the current liquid weight in the counterweight container is obtained. If the current liquid weight is greater than the preset lower limit, the second inlet and outlet of the control valve are controlled to be connected to the third inlet and outlet, and the second pump body is controlled to be in a working state, so that the second pump body transfers the liquid in the counterweight container to the liquid storage tank until the current liquid weight is less than or equal to the preset lower limit. In this way, the overall weight of the counterweight container can be reduced while ensuring that the vibrating excited component does not resonate, avoiding the storage of too much liquid in the counterweight container and thus affecting the weight adjustment reliability of other counterweight containers, thereby improving the working reliability of the shock absorbing device.

[0103] Based on the same inventive concept, the present invention further provides a vehicle comprising the shock absorbing device provided in any embodiment of the present invention. A controller in the shock absorbing device is configured to execute the shock absorbing control method provided in any embodiment of the present invention. Therefore, the vehicle possesses the technical features of the shock absorbing device and shock absorbing control method provided in the embodiments of the present invention and can achieve the beneficial effects of the shock absorbing device and shock absorbing control method provided in the embodiments of the present invention. For similarities, please refer to the above description of the shock absorbing device and shock absorbing control method provided in the embodiments of the present invention and will not be repeated here.

[0104] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations, and substitutions are possible for those skilled in the art without departing from the scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A shock absorbing device, characterized in that: include: a vibration excitation component, wherein the vibration excitation component generates vibration under vibration excitation conditions; a plurality of vibration-excited components, wherein the vibration-exciting component is mechanically connected to each of the vibration-excited components; A plurality of counterweight containers are fixedly connected to each of the vibration-excited components; A plurality of frequency detection modules are fixedly arranged with each of the vibration-excited components; the frequency detection modules are used to obtain the current vibration frequency of the vibration-excited components; The controller is connected to the frequency detection module and each of the counterweight containers, and is used to control the weight of each of the counterweight containers according to the preset frequency range of each of the vibration-excited components and the current vibration frequency.

2. The shock absorbing device according to claim 1, characterized in that Also includes: A liquid storage tank, a first pump body, a second pump body and a plurality of control valves; The liquid storage tank is used to store liquid; The first inlet and outlet of the control valve are communicated with the first inlet and outlet of the first pump body, the second inlet and outlet of the control valve are communicated with the liquid port of the weight container, and the third inlet and outlet of the control valve are communicated with the third inlet and outlet of the second pump body; The liquid outlet of the liquid storage tank is communicated with the second inlet and outlet of the first pump body and the fourth inlet and outlet of the second pump body respectively; The controller is also electrically connected to the first pump body and the second pump body, and is also used to control the first pump body to transfer the liquid in the liquid storage tank to the counterweight container, and to control the second pump body to transfer the liquid in the counterweight container to the liquid storage tank.

3. The shock absorbing device according to claim 1, characterized in that: Also includes: a plurality of acceleration detection modules, each of which is located in the vibration excitation component and each of the vibration excited components, and configured to detect a first vibration acceleration of the vibration excited component and a second vibration acceleration of the vibration excited component; The controller is also electrically connected to each of the acceleration detection modules, and is further used to control the weight of each of the counterweight containers according to each of the preset frequency ranges, the current vibration frequency, the first vibration acceleration, and each of the second vibration accelerations.

4. The shock absorbing device according to claim 1, characterized in that: Also includes: A plurality of weight detection modules, each of which is located in each of the weighted containers, and is used to detect the current weight of the liquid in the weighted container; The controller is also electrically connected to each of the weight detection modules, and is further configured to control the weight of each of the weighted containers according to each of the preset frequency ranges, the current vibration frequency, and the current liquid weight; Wherein, an energy consumption structure is provided at the bottom of the counterweight container.

5. A vibration control method, characterized in that: The vibration reduction control method is implemented by the vibration reduction device according to any one of claims 1 to 4, and includes: Obtaining the current vibration frequency and the preset frequency range of the vibration-excited component; Determining whether the current vibration frequency is within the preset frequency range; If so, the weight of the counterweight container is adjusted.

6. The vibration control method according to claim 5, characterized in that: Adjusting the weight of the counterweight container comprises: Determining whether the current liquid weight in the weight container is less than or equal to a preset lower limit; If so, the first inlet and outlet of the control valve are controlled to communicate with the second inlet and outlet, and the first pump body is controlled to be in a working state, so that the first pump body transfers the liquid in the liquid storage tank to the counterweight container.

7. The vibration control method according to claim 6, characterized in that: If the current liquid weight in the counterweight container is greater than the preset lower limit value and less than the preset upper limit value, the second inlet and outlet of the control valve are controlled to be connected to the third inlet and outlet, and the second pump body is controlled to be in a working state so that the second pump body transfers the liquid in the counterweight container to the liquid storage tank.

8. The vibration control method according to claim 6, characterized in that: When the first pump body is in the working state, obtaining a first vibration acceleration of the vibration exciting component and a second vibration acceleration of the vibration excited component; determining whether a ratio of the second vibration acceleration to the first vibration acceleration is less than a preset ratio; If so, the first pump body is controlled to be in a non-working state, and the passage between the first inlet and the second inlet is disconnected.

9. The vibration control method according to claim 8, characterized in that: If the ratio of the second vibration acceleration to the first vibration acceleration is greater than or equal to the preset ratio, and the current liquid weight of the counterweight container is less than the preset weight, the process returns to executing the step of controlling the first pump body to be in the working state.

10. The vibration control method according to claim 5, characterized in that: If the current vibration frequency is within the preset frequency range, obtaining the current liquid weight in the weight container; Determining whether the current liquid weight is greater than a preset lower limit; If so, the second inlet and outlet of the control valve are controlled to be connected to the third inlet and outlet, and the second pump body is controlled to be in a working state, so that the second pump body transfers the liquid in the counterweight container to the liquid storage tank until the current liquid weight is less than or equal to the preset lower limit value.

11. A vehicle, characterized in that: A shock absorbing device comprising the shock absorbing device according to any one of claims 1 to 4; Wherein, the controller in the shock absorption device is used to execute the shock absorption control method according to any one of claims 5 to 9.

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