Bionic double-tube interconnected air spring

Abstract

The invention discloses a bionic double-pipe interconnected air spring, and relates to the technical field of air springs, the bionic double-pipe interconnected air spring comprises an air spring and a pipeline interconnecting piece, and the air spring comprises a first air spring and a second air spring; a bearing part is arranged on the air spring; a first channel and a second channel are formed in the pipeline interconnecting piece; the first channel and the second channel are communicated with the first air spring and the second air spring; gas flowing out of the first air spring flows to the second air spring through the first channel; gas flowing out of the second air spring flows to the first air spring through the second channel; at least parts of the first channel and the second channel are one-way channels so that air can flow in one way as far as possible, internal resonance can be restrained, self-adaptive regulation and control of air damping can be achieved, and the full-frequency-domain self-adaptive vibration reduction performance of the air spring is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of air springs, and in particular relates to a bionic double-tube interconnected air spring. Background Art

[0002] Air springs are vibration-damping elements that have developed rapidly in recent years. They are widely used in many fields due to their unique nonlinear elastic characteristics, superior vibration reduction and cushioning properties, and their high adjustability, adaptability and economy.

[0003] Since the dynamic stiffness of the air spring changes with the increase of the excitation frequency, resonance peaks may appear at certain frequency points. The nonlinear characteristics make its behavior more complicated during internal resonance, resulting in an intensified vibration response. At present, the technologies used to suppress internal resonance mainly include the use of damping materials, vibration isolation systems, and adjustment of the natural frequency of the system. For example, by optimizing the design parameters of the air spring, such as the throttle diameter and the volume of the built-in air chamber, the peak value of the internal resonance peak can be suppressed, but the internal resonance is not suppressed from the generation mechanism.

[0004] For example, the utility model described in patent CN221800447U, a low-resonance air damper, changes its natural frequency by setting a damping part, changing the rigid connection, and also reducing the exciting force, and reducing the resonance amplitude by reducing the forced vibration source. Although these methods are effective to a certain extent, they often increase the complexity and cost of the system, and sacrifice the performance of the system at other frequencies when suppressing the resonance of a certain frequency. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a bionic double-tube interconnected air spring, which suppresses internal resonance from a mechanism perspective by unidirectionally flowing air in the interconnected pipe part between two elastic airbags.

[0006] The embodiment of the present invention provides a bionic double-tube interconnected air spring, comprising: The air spring comprises a first air spring and a second air spring; the air spring is provided with a bearing portion; A pipeline interconnection component, in which a first channel and a second channel are formed, so that the air pressure changes between the two air springs can offset each other, thereby suppressing the internal resonance phenomenon caused by air pressure imbalance; the first channel and the second channel are both connected to the first air spring and the second air spring; the gas flowing out of the first air spring flows to the second air spring through the first channel; the gas flowing out of the second air spring flows to the first air spring through the second channel; the first channel and the second channel are at least partially one-way channels.

[0007] A bionic double-tube interconnected air spring according to an embodiment of the present invention has at least the following beneficial effects: The first air spring and the second air spring are connected through the first channel and the second channel. The first channel and the second channel are at least partially one-way channels to make the gas flow in one direction as much as possible, thereby making the airflow between the first air spring and the second air spring more stable, reducing the reverse or periodic fluctuation of the airflow in the channel, and suppressing the internal resonance from the mechanism through the one-way flow of air in the pipe interconnection between the two elastic air bags.

[0008] In some embodiments of the present invention, the pipe interconnection component includes a first unidirectional flexible pipe, a second unidirectional flexible pipe, a third unidirectional flexible pipe, a fourth unidirectional flexible pipe and an external air chamber, the external air chamber connects the first unidirectional flexible pipe and the second unidirectional flexible pipe to form the first channel, and the external air chamber connects the third unidirectional flexible pipe and the fourth unidirectional flexible pipe to form the second channel.

[0009] In some embodiments of the present invention, the external air chamber is a vibration-damping airbag.

[0010] In some embodiments of the present invention, the pipeline interconnection component also includes an air inlet pipe and an air outlet pipe, the air inlet end of the air inlet pipe is connected to the first unidirectional flexible pipe and the third unidirectional flexible pipe, and the air outlet end of the air inlet pipe is connected to the external air chamber; the air inlet end of the air outlet pipe is connected to the external air chamber, and the air outlet end of the air outlet pipe is connected to the second unidirectional flexible pipe and the fourth unidirectional flexible pipe.

[0011] In some embodiments of the present invention, the bionic double-tube interconnected air spring also includes a first connecting tube and a second connecting tube, one end of the first connecting tube is connected to the first air spring, and the other end is connected to the first unidirectional flexible pipe and the fourth unidirectional flexible pipe; one end of the second connecting tube is connected to the second air spring, and the other end is connected to the second unidirectional flexible pipe and the third unidirectional flexible pipe.

[0012] In some embodiments of the present invention, the bionic double-tube interconnected air spring also includes a bionic valve-type one-way valve, and the first one-way flexible pipe, the second one-way flexible pipe, the third one-way flexible pipe and the fourth one-way flexible pipe are all provided with the bionic valve-type one-way valve.

[0013] In some embodiments of the present invention, the bionic valve-type one-way valve has an inlet side and an outlet side. When the air pressure on the inlet side is greater than the air pressure on the outlet side, the bionic valve-type one-way valve connects the inlet side and the outlet side.

[0014] In some embodiments of the present invention, the bionic valve-type one-way valve includes a plurality of valves, which are connected to the side wall of the first channel or the second channel and extend from the air inlet side to the air outlet side; when the air pressure on the air inlet side is less than or equal to the air pressure on the air outlet side, the plurality of valves gather toward the center to separate the air inlet side and the air outlet side; when the air pressure on the air inlet side is greater than the air pressure on the air outlet side, the plurality of valves spread toward the air outlet side so that the air inlet side and the air outlet side are connected.

[0015] In some embodiments of the present invention, the air spring has an air cavity, a partition is arranged inside the air spring, the partition divides the air cavity into a main air chamber and a built-in air chamber, the main air chamber has a vent, and the vent is connected to the pipeline interconnector.

[0016] In some embodiments of the present invention, a solenoid valve is disposed on the partition, and the solenoid valve is used to conduct the main air chamber and the built-in air chamber.

[0017] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments; Figure 1 It is a schematic diagram of the overall structure of a bionic double-tube interconnected air spring provided by an embodiment of the present invention; Figure 2 It is a schematic diagram of the overall structure of a pipeline interconnection component of a bionic double-tube interconnected air spring provided by an embodiment of the present invention; Figure 3 is a structural schematic diagram of a first air spring of a bionic double-tube interconnected air spring provided in an embodiment of the present invention; Figure 4 is a schematic structural diagram of a second air spring of a bionic double-tube interconnected air spring provided in an embodiment of the present invention; Figure 5 It is a structural schematic diagram of a bionic valve-type one-way valve of a bionic double-tube interconnected air spring in a closed state provided by an embodiment of the present invention; Figure 6 This is a schematic structural diagram of a bionic valve-type one-way valve of a bionic double-tube interconnected air spring in an open state provided by an embodiment of the present invention. Figure 7 It is a structural schematic diagram of an external air chamber of a bionic double-tube interconnected air spring provided in an embodiment of the present invention.

[0019] The following are marked in the accompanying drawings: 100, air spring; 110, first air spring; 120, second air spring; 130, bearing portion; 140, partition portion; 150, main air chamber; 151, vent hole; 160, built-in air chamber; 170, solenoid valve; 200, pipeline interconnection member; 210, external air chamber; 220, first one-way flexible pipeline; 230, second one-way flexible pipeline; 240, third one-way flexible pipeline; 250, fourth one-way flexible pipeline; 260, first channel; 270, second channel; 280, air outlet pipe; 290, air inlet pipe; 300, lower cover; 400, a first connecting pipe; 500, second connecting pipe; 600, bionic valve-type one-way valve; 610, first one-way valve; 620, second one-way valve; 630, third one-way valve; 640, fourth one-way valve; 650, air inlet side; 660, air outlet side; 670, valve. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In the description of the present invention, if there are words such as "several", it means one or more, "more" means two or more, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there are descriptions of first, second, and third, they are only used to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] like Figure 1 to Figure 2 As shown, a bionic double-tube interconnected air spring according to an embodiment of the present invention includes an air spring 100 and a pipe interconnection member 200, wherein the air spring 100 includes a first air spring 110 and a second air spring 120; a bearing portion 130 is provided on the air spring 100; a first channel 260 and a second channel 270 are formed in the pipe interconnection member 200; the first channel 260 and the second channel 270 are both connected to the first air spring 110 and the second air spring 120; the gas flowing out of the first air spring 110 flows to the second air spring 120 through the first channel 260; the gas flowing out of the second air spring 120 flows to the first air spring 110 through the second channel 270; the first channel 260 and the second channel 270 are at least partially one-way channels.

[0025] The first air spring 110 and the second air spring 120 are connected through the first channel 260 and the second channel 270. The first channel 260 and the second channel 270 are at least partially unidirectional channels to allow the gas to flow in one direction as much as possible, thereby making the airflow between the first air spring 110 and the second air spring 120 more stable and reducing the reverse or periodic fluctuations of the airflow in the channel. The structure is simple, and the air in the pipeline interconnection part flows unidirectionally between the two elastic air bags, thereby suppressing internal resonance from a mechanism perspective.

[0026] The embodiment of the present invention adopts a bionic design, imitating the characteristics of blood flowing out of arteries and flowing into veins during the beating of the human heart, and can realize a one-way flow of gas, thereby achieving the effect of suppressing the internal resonance of the air spring 100.

[0027] The flow direction of the gas is limited by the first channel 260 and the second channel 270. In the case of unidirectional flow, the propagation path and direction of the pressure wave in the pipeline are relatively simple and easy to predict. The pressure wave of the fluid will propagate unidirectionally along the flow direction without bidirectional reflection and interference, which helps to reduce the fluctuation of the frequency and intensity of the pressure wave in the pipeline; secondly, in bidirectional flow, the pressure wave will propagate back and forth in the pipeline, and it is easy to overlap with other waves to form resonance, while in the case of unidirectional flow, the propagation direction of the pressure wave is clear, avoiding such complex fluctuation interference; thirdly, in bidirectional flow, the speed and direction of the airflow will change dramatically, especially in the reverse flow and collision of the fluid, which is easy to produce strong local flow instability, thereby increasing the risk of resonance, while in the case of unidirectional flow, the flow velocity changes less, the flow is more uniform, the airflow direction remains consistent, the flow velocity changes less, and the pressure fluctuation in the pipeline is therefore relatively gentle.

[0028] The first channel 260 or the second channel 270 may be all one-way channels or part of them, which is not particularly limited in the embodiment of the present invention. When a bionic double-tube interconnected air spring is in a compressed state, the gas flows from the first air spring 110 through the first channel 260 to the second air spring 120; when a bionic double-tube interconnected air spring is in a stretched state, the gas flows from the second air spring 120 through the second channel 270 to the first air spring 110.

[0029] The air spring 100 is provided with a bearing part 130. It can be understood that the bearing part 130 is provided on both the first air spring 110 and the second air spring 120. The bearing part 130 is used to support the object to be isolated, such as industrial machines, equipment and precision instruments, etc., to reduce the vibration generated by the industrial machines, equipment and precision instruments during operation. The embodiment of the present invention does not impose any special restrictions on the object to be isolated. The bearing part 130 is generally an upper cover plate. Of course, the bearing part 130 can also be other shapes, as long as the bearing part 130 can support the object to be isolated. The two air springs 100 can play a more stable supporting role and achieve a better vibration reduction effect; of course, in other embodiments, the load-bearing portion 130 can be provided only on the first air spring 110, or the load-bearing portion 130 can be provided only on the second air spring 120, and the embodiment of the present invention does not specifically limit this; in other embodiments, the air spring 100 can also be provided with three, four, or five air springs 100, and the adjacent two air springs 100 are connected through the pipe interconnection part 200, and the embodiment of the present invention does not specifically limit the number of air springs 100.

[0030] like Figure 1 to Figure 2 As shown, in some embodiments, a lower cover plate 300 can be provided at the bottom of the air spring 100, and the air spring 100 can be mounted on the lower cover plate 300 by using fasteners such as bolts, and the lower cover plate 300 can be fixed to an external fixed object, for example, the lower cover plate 300 can be a fixed plate, and the fixed plate can be fixed to the ground.

[0031] like Figure 1 to Figure 2 As shown, in some embodiments of the present invention, the pipe interconnector 200 includes a first unidirectional flexible pipe 220, a second unidirectional flexible pipe 230, a third unidirectional flexible pipe 240, a fourth unidirectional flexible pipe 250 and an external air chamber 210, the external air chamber 210 connects the first unidirectional flexible pipe 220 and the second unidirectional flexible pipe 230 to form a first channel 260, and the external air chamber 210 connects the third unidirectional flexible pipe 240 and the fourth unidirectional flexible pipe 250 to form a second channel 270.

[0032] It can be understood that both the first channel 260 and the second channel 270 flow through the external air chamber 210, so that the gas flowing out of the first air spring 110 and the second air spring 120 converges in the external air chamber 210 and then flows to the first air spring 110 or the second air spring 120, which is beneficial to balancing the air pressure of the first air spring 110 and the second air spring 120.

[0033] Among them, the first unidirectional flexible pipe 220, the second unidirectional flexible pipe 230, the third unidirectional flexible pipe 240 and the fourth unidirectional flexible pipe 250 are unidirectional pipes, which can limit the flow direction of the gas. When the first air spring 110 and the second air spring 120 are connected, the flow direction of the gas inside the pipe interconnector 200 can be limited to reduce the internal resonance phenomenon.

[0034] like Figure 1 , Figure 2 and Figure 7 As shown, in some embodiments of the present invention, the external air chamber 210 is a vibration suppression airbag, which can temporarily store gas, so that the gas flowing out of the first air spring 110 and the second air spring 120 can converge in the vibration suppression airbag, thereby reducing the air pressure difference between the first air spring 110 and the second air spring 120, which is conducive to suppressing internal resonance. The external air chamber 210 can be fixed to other fixed objects such as the ground by fixing components such as bolts; of course, in other embodiments, the external air chamber 210 can also be a pipe.

[0035] like Figure 1 to Figure 2 As shown, in some embodiments of the present invention, the pipeline interconnection part 200 also includes an air inlet pipe 290 and an air outlet pipe 280, the air inlet end of the air inlet pipe 290 is connected to the first unidirectional flexible pipe 220 and the third unidirectional flexible pipe 240, and the air outlet end of the air inlet pipe 290 is connected to the external air chamber 210; the air inlet end of the air outlet pipe 280 is connected to the external air chamber 210, and the air outlet end of the air outlet pipe 280 is connected to the second unidirectional flexible pipe 230 and the fourth unidirectional flexible pipe 250. The gas flowing out of the first air spring 110 enters the external air chamber 210 through the first one-way flexible pipe 220 and the air inlet pipe 290, and the gas flowing out of the second air spring 120 enters the external air chamber 210 through the third one-way flexible pipe 240 and the air inlet pipe 290. The gas flowing out of the external air chamber 210 flows through the second air spring 120 through the air outlet pipe 280 and the second one-way flexible pipe 230, and the gas flowing out of the external air chamber 210 flows through the first air spring 110 through the air outlet pipe 280 and the fourth one-way flexible pipe 250. The number of the air inlet pipe 290 and the air outlet pipe 280 can be reduced, and at the same time, the one-way connection between the first air spring 110 and the external air chamber 210 and between the external air chamber 210 and the second air spring 120 can be met.

[0036] like Figure 1 to Figure 2As shown, in some embodiments of the present invention, a bionic double-tube interconnected air spring also includes a first connecting tube 400 and a second connecting tube 500, one end of the first connecting tube 400 is connected to the first air spring 110, and the other end is connected to the first unidirectional flexible pipe 220 and the fourth unidirectional flexible pipe 250; one end of the second connecting tube 500 is connected to the second air spring 120, and the other end is connected to the second unidirectional flexible pipe 230 and the third unidirectional flexible pipe 240. The first air spring 110 and the pipeline interconnection part 200 are connected through the first connecting tube 400, and the second air spring 120 and the pipeline interconnection part 200 are connected through the second connecting tube 500, so that the number of openings on the air spring 100 can be reduced.

[0037] like Figure 1 to Figure 2 As shown, in some embodiments of the present invention, a bionic double-tube interconnected air spring also includes a bionic valve-type one-way valve 600, which is arranged in the first one-way flexible pipe 220, the second one-way flexible pipe 230, the third one-way flexible pipe 240 and the fourth one-way flexible pipe 250, so that the airflow inside the first one-way flexible pipe 220, the second one-way flexible pipe 230, the third one-way flexible pipe 240 and the fourth one-way flexible pipe 250 can achieve one-way flow, so as to reduce the fluctuation of the airflow inside the pipe, thereby reducing the internal resonance phenomenon.

[0038] Among them, the bionic valve-type one-way valve 600 includes a first one-way valve 610, a second one-way valve 620, a third one-way valve 630 and a fourth one-way valve 640. The first one-way valve 610 is arranged on the first one-way flexible pipe 220, and the conducting direction of the first one-way valve 610 is from the first air spring 110 to the external air chamber 210; the second one-way valve 620 is arranged on the second one-way flexible pipe 230, and the conducting direction of the second one-way valve 620 is from the external air chamber 210 to the second air spring 120; the third one-way valve 630 is arranged on the third one-way flexible pipe 240, and the conducting direction of the third one-way valve 630 is from the second air spring 120 to the external air chamber 210; the fourth one-way valve 640 is arranged on the fourth one-way flexible pipe 250, and the conducting direction of the fourth one-way valve 640 is from the external air chamber 210 to the first air spring 110.

[0039] The pipe diameter affects the resonance frequency and damping. When the pipe diameter is small, the damping increases, resulting in an increase in the resonance frequency. When the pipe diameter is large, the damping decreases, resulting in a decrease in the resonance frequency. Therefore, the pipe diameters of the first unidirectional flexible pipe 220, the second unidirectional flexible pipe 230, the third unidirectional flexible pipe 240, the fourth unidirectional flexible pipe 250, the air inlet pipe 290, the air outlet pipe 280, the first connecting pipe 400 and the second connecting pipe 500 can be designed according to actual conditions to reduce the resonance frequency as much as possible while satisfying the gas circulation. Generally, the first unidirectional flexible pipe 220, the second unidirectional flexible pipe 230, the third unidirectional flexible pipe 240, the fourth unidirectional flexible pipe 250, the air inlet pipe 290, the air outlet pipe 280, the first connecting pipe 400 and the second connecting pipe 500 can be flexible pipes, which can effectively withstand external vibration, stretching and bending stresses, can prevent the flexible pipe from breaking or leaking, and ensure the stability and safety of gas transportation. In addition, the flexible pipe can be bent and adjusted in different environments and occasions, and has strong adaptability.

[0040] The damping characteristics of air springs are not only related to the structure of the air springs themselves, but also affected by the external excitation frequency and amplitude. When the external excitation conditions change, the damping characteristics of the air spring system will also change. For the nonlinear vibration system of air springs, too much or too little damping is not conducive to reducing vibration. Therefore, the design of air springs with adaptive and variable damping requirements is particularly important.

[0041] like Figure 2 As shown, in some embodiments of the present invention, the bionic valve-type one-way valve 600 has an inlet side 650 and an outlet side 660. When the air pressure on the inlet side 650 is greater than the air pressure on the outlet side 660, the bionic valve-type one-way valve 600 connects the inlet side 650 and the outlet side 660, so that the air pressure on the inlet side 650 and the air outlet side 660 tend to be consistent; through the bionic valve-type one-way valve 600, not only the flow direction of the gas can be restricted, but also the air pressure in the first channel 260 or the second channel 270 can be balanced, and by reducing the air pressure difference, an internal resonance phenomenon inside a bionic double-tube interconnected air spring can be suppressed.

[0042] like Figures 5 and 6As shown, in some embodiments of the present invention, the bionic valve-type one-way valve 600 includes a plurality of valves 670, which are connected to the side walls of the first channel 260 or the second channel 270 and extend from the air inlet side 650 to the air outlet side 660; when the air pressure on the air inlet side 650 is less than or equal to the air pressure on the air outlet side 660, the plurality of valves 670 gather toward the center to separate the air inlet side 650 from the air outlet side 660; when the air pressure on the air inlet side 650 is greater than the air pressure on the air outlet side 660, the plurality of valves 670 spread toward the air outlet side 660 so that the air inlet side 650 and the air outlet side 660 are connected.

[0043] It can be understood that the plurality of valves 670 are connected to the side wall of the first channel 260 or the second channel 270 and extend from the air inlet side 650 to the air outlet side 660, so that the gas cannot flow from the air outlet side 660 to the air inlet side 650, so that the gas flows in one direction; when the air pressure on the air inlet side 650 is less than or equal to the air pressure on the air outlet side 660, the valves 670 spread toward the air outlet side 660 under the effect of the air pressure, so that the air inlet side 650 and the air outlet side 660 are connected; if the air pressure difference between the air inlet side 650 and the air outlet side 660 is large, If the flap 670 spreads widely, the bionic valve check valve 600 opens widely and the flow rate through the bionic valve check valve 600 is larger; if the pressure difference between the air inlet side 650 and the air outlet side 660 is small, the flap 670 spreads widely, the bionic valve check valve 600 opens narrowly and the flow rate through the bionic valve check valve 600 is smaller; therefore, the bionic valve check valve 600 can adjust the opening of the bionic valve check valve 600 according to different air pressure conditions to achieve adaptive adjustment of air damping. Generally, the flap 670 is made of TPU (thermoplastic polyurethane elastomer, also known as thermoplastic polyurethane rubber).

[0044] Generally, three valves 670 can be provided, and the three valves 670 are symmetrically arranged with the axis of the pipeline as the center. When the air pressure on the air inlet side 650 is less than or equal to the air pressure on the air outlet side 660, multiple valves 670 gather toward the center and seal with each other to separate the air inlet side 650 and the air outlet side 660.

[0045] This application is based on bionics and vibration control technology, draws on the design of the blood circulation route of the human heart beat, and simulates the heart valve structure to design a bionic valve-type one-way valve 600 with adjustable opening. It comprehensively considers different environmental load changes and frequency domain characteristics for bionic design, so as to suppress the resonance within the air spring and achieve the effect of variable damping, self-adaptation and transition smoothness.

[0046] The bionic valve-type one-way valve 600 can adjust its opening according to the gas flow rate by imitating the function of the valve in the heart. The valve 670 will increase its opening as the airflow velocity increases, thereby increasing the damping; conversely, it will decrease its opening as the airflow velocity decreases, thereby reducing the damping, thereby achieving the purpose of adaptively adjusting the damping.

[0047] Since the pipeline interconnector 200 connects the two air springs 100 to a common external air chamber 210 through a one-way flexible pipeline, the one-way flow design of the bionic valve-type one-way valve 600 ensures that the gas can only flow in or out in one direction, avoiding pressure fluctuations and resonance caused by reverse flow; and according to the influence of the pipeline diameter on the resonant frequency and damping, when the pipeline diameter is small, the increased damping leads to an increase in the resonant frequency, and when the pipeline diameter is large, the reduced damping leads to a decrease in the resonant frequency. The pipeline diameter should be designed according to the actual situation.

[0048] Of course, in other embodiments, the bionic valve-type one-way valve 600 may adopt the one-way valve in the prior art, and a pressure sensor may be installed on the pipeline to control the bionic valve-type one-way valve according to the pipeline pressure. Similarly, the effect of controlling the opening and closing of the bionic valve-type one-way valve according to the air pressure can be achieved.

[0049] like Figure 3 to Figure 4 As shown, in some embodiments of the present invention, the air spring 100 has an air cavity, and a partition 140 is arranged inside the air spring 100. The partition 140 divides the air cavity into a main air chamber 150 and a built-in air chamber 160, which is helpful for the volume inside the air spring 100 to change in steps, thereby expanding the adjustable stiffness range of a bionic double-tube interconnected air spring; the main air chamber 150 has a vent 151, and the vent 151 is connected to the pipeline interconnection member 200, and the main air chamber 150 is connected to the pipeline interconnection member 200 through the vent. Specifically, the main air chamber 150 is located on the upper side of the built-in air chamber 160, that is, the bearing portion 130 is connected to the side of the air spring 100 close to the main air chamber 150, and the base is connected to the side of the air spring 100 close to the built-in air chamber 160.

[0050] like Figure 3 to Figure 4 As shown, in some embodiments of the present invention, a solenoid valve 170 is disposed on the partition 140, and the solenoid valve 170 is used to connect the main air chamber 150 and the built-in air chamber 160. The solenoid valve 170 can control the connection and isolation between the main air chamber 150 and the built-in air chamber 160. The solenoid valve 170 is generally a solenoid valve.

[0051] The solenoid valve 170 controls the connection and isolation of air between the main air chamber 150 and the built-in air chamber 160 by changing the opening, adjusting the volume of the air spring 100, and then adjusting the stiffness and damping. When the solenoid valve 170 is opened more, more air flows, making the stiffness and damping lower; when the solenoid valve 170 is opened less, the air flow is restricted, making the stiffness and damping higher. In this way, the volume of the main air chamber 150 is graded and the adjustable range of stiffness is expanded.

[0052] A bionic double-tube interconnected air spring includes a main air chamber 150, a built-in air chamber 160 and a solenoid valve 170; a pipeline interconnection component 200 includes a one-way flexible pipeline and a bionic valve-type one-way valve 600; an external air chamber 210 that simulates the human body cavity and two left and right heart-simulating double-chamber air springs 100 are connected to the external air chamber 210 that simulates the human body cavity through a one-way flexible pipeline that simulates blood vessels. The built-in air chamber 160 of a bionic double-tube interconnected air spring that imitates the heart is integrated with the main air chamber 150, and the lower cover plate of the built-in air chamber 160 is in contact with the base; the upper cover plate of the main air chamber 150 is connected to the vibration-isolated object, and the air holes on the upper cover plate are connected to the one-way flexible pipe.

[0053] The solenoid valve 170 of a bionic double-tube interconnected air spring that imitates the heart is arranged between the built-in air chamber 160 and the main air chamber 150, and can dynamically control the connection and isolation between the main air chamber 150 and the built-in air chamber 160.

[0054] The built-in air chamber 160 of a bionic double-tube interconnected air spring that imitates the heart can achieve a step-by-step change in the volume of the main air chamber 150, thereby expanding the adjustable stiffness range of the heart-imitation double-chamber air spring.

[0055] Four bionic valve-type one-way valves 600 of a bionic double-tube interconnected air spring that simulates a heart are respectively arranged in the one-way flexible pipes that flow into and out of the left and right two bionic double-chamber air spring components.

[0056] The unidirectional flexible pipe of a bionic double-tube interconnected air spring that simulates the heart can make the gas flow from one heart-mimicking double-chamber air spring component to one end of the external air chamber 210, and then flow from the other end of the external air chamber 210 to another heart-mimicking double-chamber air spring component. The gas flows independently and without interference.

[0057] A bionic valve-type one-way valve 600 with a bionic double-tube interconnected air spring that imitates the heart simulates the flexible valve of the heart, adaptively adjusts the opening of the bionic valve-type one-way valve according to the gas flow rate, and thus realizes adaptive adjustment of air damping.

[0058] The volume of the external air chamber 210 imitating the human body cavity is fixed, and two air holes are opened at the upper end to connect with the one-way flexible pipeline.

[0059] The embodiment of the present invention utilizes the structure of the air spring, the gas and its fluid mechanics characteristics according to the vibration reduction performance requirements, and draws on the design of the blood circulation route of the human heart. The main air chamber 150 of the first air spring 110 simulating the heart on the left corresponds to the left atrium, and its built-in air chamber 160 corresponds to the left ventricle. The main air chamber 150 of the second air spring 120 simulating the heart on the right corresponds to the right atrium, and its built-in air chamber 160 corresponds to the right ventricle. The first one-way flexible pipe 220 and the third one-way flexible pipe 240 equipped with a bionic valve one-way valve 600 correspond to the human artery, the second one-way flexible pipe 230 and the fourth one-way flexible pipe 250 equipped with a bionic valve one-way valve 600 correspond to the human vein, and the external air chamber 210 corresponds to the human body cavity. When a bionic double-tube interconnected air spring is in a compressed state, gas flows from the first air spring 110 through the first unidirectional flexible pipe 220, the external air chamber 210, and the second unidirectional flexible pipe 230 to the second air spring 120; when the air spring is in a stretched state, gas flows from the second air spring 120 through the third unidirectional flexible pipe 240, the external air chamber 210, and the fourth unidirectional flexible pipe 250 to the first air spring 110.

[0060] The present invention optimizes the single-tube connection structure of a traditional air spring and designs a double-tube interconnected air spring to suppress the resonance phenomenon inside the spring, thereby improving the full-frequency adaptive vibration reduction performance of the air spring.

[0061] The solenoid valve 170 described in this article can dynamically adjust the gas flow between the main air chamber 150 and the built-in air chamber 160. By dynamically adjusting the opening and closing of the solenoid valve 170, the volume of the air spring 100 is changed, and the stiffness and damping values ​​of the air spring 100 are dynamically adjusted, further improving its adaptability and vibration isolation capability. The bionic valve-type one-way valve simulates the design of the heart valve structure and can adjust its opening degree according to the gas flow rate. Under different flow conditions, the opening degree of the bionic valve-type one-way valve 600 increases as the gas flow rate increases. The bionic valve-type one-way valve 600 with a flexible valve can realize adaptive adjustment of variable damping.

[0062] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A bionic double-tube interconnected air spring, characterized in that: include: An air spring (100) comprises a first air spring (110) and a second air spring (120); a bearing portion (130) is provided on the air spring (100); A pipeline interconnection member (200), wherein a first channel (260) and a second channel (270) are formed in the pipeline interconnection member (200); the first channel (260) and the second channel (270) are both connected to the first air spring (110) and the second air spring (120); the gas flowing out of the first air spring (110) flows to the second air spring (120) through the first channel (260); the gas flowing out of the second air spring (120) flows to the first air spring (110) through the second channel (270); and the first channel (260) and the second channel (270) are at least partially one-way channels.

2. The bionic double-tube interconnected air spring according to claim 1, characterized in that: The pipeline interconnection member (200) comprises a first unidirectional flexible pipe (220), a second unidirectional flexible pipe (230), a third unidirectional flexible pipe (240), a fourth unidirectional flexible pipe (250) and an external air chamber (210); the external air chamber (210) connects the first unidirectional flexible pipe (220) and the second unidirectional flexible pipe (230) to form the first channel (260); the external air chamber (210) connects the third unidirectional flexible pipe (240) and the fourth unidirectional flexible pipe (250) to form the second channel (270).

3. The bionic double-tube interconnected air spring according to claim 2, characterized in that: The external air chamber (210) is a vibration-suppressing air bag.

4. The bionic double-tube interconnected air spring according to claim 2, characterized in that: The pipeline interconnection member (200) further comprises an air inlet pipe (290) and an air outlet pipe (280); the air inlet end of the air inlet pipe (290) is connected to the first unidirectional flexible pipe (220) and the third unidirectional flexible pipe (240), and the air outlet end of the air inlet pipe (290) is connected to the external air chamber (210); the air inlet end of the air outlet pipe (280) is connected to the external air chamber (210), and the air outlet end of the air outlet pipe (280) is connected to the second unidirectional flexible pipe (230) and the fourth unidirectional flexible pipe (250).

5. The bionic double-tube interconnected air spring according to claim 4, characterized in that: The bionic double-tube interconnected air spring further comprises a first connecting tube (400) and a second connecting tube (500); one end of the first connecting tube (400) is connected to the first air spring (110), and the other end is connected to the first unidirectional flexible pipe (220) and the fourth unidirectional flexible pipe (250); one end of the second connecting tube (500) is connected to the second air spring (120), and the other end is connected to the second unidirectional flexible pipe (230) and the third unidirectional flexible pipe (240).

6. The bionic double-tube interconnected air spring according to claim 2, characterized in that: The bionic double-tube interconnected air spring further comprises a bionic valve-type one-way valve (600), and the first one-way flexible pipe (220), the second one-way flexible pipe (230), the third one-way flexible pipe (240) and the fourth one-way flexible pipe (250) are all provided with the bionic valve-type one-way valve (600).

7. The bionic double-tube interconnected air spring according to claim 6, characterized in that: The bionic valve-type one-way valve (600) has an air inlet side (650) and an air outlet side (660), and when the air pressure on the air inlet side (650) is greater than the air pressure on the air outlet side (660), the bionic valve-type one-way valve (600) connects the air inlet side (650) and the air outlet side (660).

8. The bionic double-tube interconnected air spring according to claim 7, characterized in that: The bionic valve-type one-way valve (600) comprises a plurality of valves (670), wherein the valves (670) are connected to the side wall of the first channel (260) or the second channel (270) and extend from the air inlet side (650) to the air outlet side (660); when the air pressure on the air inlet side (650) is less than or equal to the air pressure on the air outlet side (660), the plurality of valves (670) gather toward the center to separate the air inlet side (650) and the air outlet side (660); when the air pressure on the air inlet side (650) is greater than the air pressure on the air outlet side (660), the plurality of valves (670) spread toward the air outlet side (660) so that the air inlet side (650) and the air outlet side (660) are connected.

9. A bionic double-tube interconnected air spring according to any one of claims 1 to 8, characterized in that: The air spring (100) has an air cavity. A partition (140) is arranged inside the air spring (100). The partition (140) divides the air cavity into a main air chamber (150) and a built-in air chamber (160). The main air chamber (150) has a vent hole (151). The vent hole (151) is connected to the pipeline interconnection component (200).

10. The bionic double-tube interconnected air spring according to claim 9, characterized in that: The partition (140) is provided with a solenoid valve (170), and the solenoid valve (170) is used to conduct the main air chamber (150) and the built-in air chamber (160).

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