Adaptive vibration isolation device and vehicle

Abstract

An adaptive vibration isolation device and a vehicle. An upper support (2) of the self-adaptive vibration isolation device is guidedly and movably mounted on a support partition plate (1) in the vertical direction; lifting / lowering adjustment bladders (4) are provided between the upper support (2) and the support partition plate (1), and vibration damping bladders (5) are also provided therebetween, the vibration damping bladders (5) being communicated with a buffer bladder (6); when the relative height between the upper support (2) and the support partition plate (1) changes, the buffer bladder (6) supplies a buffer medium into the vibration damping bladders (5) or the buffer bladder (6) withdraws the buffer medium from the vibration damping bladders (5). In the adaptive vibration isolation device and the vehicle, the height of the upper support (2) is adjusted by means of the lifting / lowering adjustment bladders (4), so as to adjust the height of a drive motor (11), ensure that the drive motor (11), a transmission shaft (12) and a drive axle (13) are in a 0-angle state, and provide vibration damping when the drive motor (11) generates small vibration, thereby avoiding vibration and noise generated due to the angle between the three, improving the comfort of vehicles, and solving the problem in the prior art of vibration and noise generated by vehicle body sinking due to load changes of vehicles.

Description

An adaptive vibration isolation device and vehicle Technical Field

[0001] This invention relates to the field of vibration reduction devices, and more particularly to an adaptive vibration isolation device and a vehicle. Background Technology

[0002] The drive motor is a crucial component of the power system of new energy buses. The chassis of a new energy bus typically uses a drive motor + drive shaft + leaf spring configuration, as shown in Figure 1. The drive motor 11 and leaf spring 14 are fixed to the frame. One end of the drive shaft 12 is connected to the drive axle 13, which is fixed to the wheel axle 19, and the other end is connected to the drive motor 11. During bus operation, the drive motor 11 may vibrate under different road conditions, which can lead to malfunctions and affect comfort and overall vehicle operation. Therefore, existing technologies use vibration isolation devices to reduce the vibration of the drive motor 11. As shown in Figure 4, one type of rubber vibration isolation structure connects the drive motor 11 to the frame 17 via rubber vibration isolation 18. Vibration is reduced by installing rubber vibration isolation 18 at the bottom of the drive motor 11. Another vibration isolation structure, such as the passive hydraulic suspension with an equivalent mechanical structure provided by Chinese invention patent CN103671686B, uses a dual-fluid medium formed by an air spring and hydraulic damping to provide synergistic vibration isolation for the drive motor, reducing its vibration and improving overall vehicle comfort.

[0003] However, as the load on the bus changes, the frame will deform to different degrees depending on the load. As shown in Figure 2, when the vehicle is fully loaded, the frame sinks as a whole. Since the two ends of the leaf spring 14 are fixed to the frame, the leaf spring 14 is flattened at this time. In general, the design ensures that the drive motor 11, drive shaft 12 and drive axle 13 are on the same straight line when fully loaded. As shown in Figure 3, when unloaded, the vehicle body is raised as a whole. At this time, the leaf spring 14 is bent. The drive axle 13, drive shaft 12 and drive motor 11 are at a certain angle. Since the position of drive axle 13 has not changed, but the actual height of drive motor 11 and drive shaft 12 has increased, the angle between drive axle 13, drive motor 11 and drive shaft 12 has changed. When there is an angle between drive shaft 12 and drive axle 13, the power torque output will produce speed fluctuations and torque fluctuations. The larger the angle, the larger the fluctuation amplitude. Speed ​​fluctuations and torque fluctuations will cause vibration inside the vehicle, generate noise, and reduce the comfort of the bus. Summary of the Invention

[0004] The purpose of this invention is to provide an adaptive vibration isolation device to solve the problem in the prior art where the drive motor, transmission shaft and drive axle are not on the same axis due to different loads, and the angle between the three causes vibration and noise inside the vehicle; this invention also provides a vehicle to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides an adaptive vibration isolation device, including a support partition and upper and lower supports installed on the upper and lower sides of the support partition. The lower support is fixedly connected to the support partition, and the upper support is movably mounted on the support partition in the vertical direction. A lifting adjustment bladder is provided between the upper support and the support partition, and a damping bladder is also provided between the upper support and the support partition. The damping bladder is connected to a buffer bladder. When the relative height between the upper support and the support partition changes, the buffer bladder replenishes the damping medium into the damping bladder or retracts the buffering medium from the damping bladder through the buffer bladder.

[0006] Furthermore, the guide structure between the upper support and the support partition is set inside the lifting adjustment bladder or the vibration damping bladder.

[0007] Furthermore, the lifting adjustment bladder is a lifting air bladder, while the shock-absorbing bladder and the buffer bladder are both oil bladders, with the lifting adjustment bladder located in the middle of the shock-absorbing bladder.

[0008] Furthermore, there is a receiving space between the lower support and the supporting partition, and the buffer bladder is disposed within this receiving space.

[0009] Furthermore, the lower support has a basin-like structure, and the basin opening is fixedly connected to the support partition, forming an accommodating space within the basin's inner cavity.

[0010] Furthermore, the opening of the buffer bladder is sealed to the lower side of the support partition, and the support partition is provided with a connecting structure to realize the connection between the shock-absorbing bladder and the buffer bladder.

[0011] Furthermore, the connecting structure is a throttling damping structure.

[0012] Furthermore, the throttling damping structure is a throttling valve.

[0013] Furthermore, the throttle valve is an electrically controlled valve, which can adjust the opening degree.

[0014] Furthermore, the support partition is provided with a through hole, and the throttle valve includes a valve body connected to the through hole on the support partition. The valve body has a valve body cavity communicating with the through hole. The valve body cavity is connected with valve ports of different diameters. The valve core in the valve body cavity opens different valve ports at different positions so as to communicate with the through hole.

[0015] Furthermore, both the vibration damping bladder and the buffer bladder are circular bladders with multiple interconnected structures, which are evenly arranged around the circumference.

[0016] Furthermore, both the support partition and the upper bracket are circular, and the vibration damping bladder and the lifting adjustment bladder are sealed to the upper bracket and the support partition.

[0017] Furthermore, the upper support is a basin-type support with the rim facing downwards. The side wall edge of the upper support is folded back to form a first mounting ring groove with the opening facing upwards. The edge of the support partition is folded back to form a second mounting ring groove with the opening facing inwards. The two ends of the vibration damping bladder extend into the first and second mounting ring grooves at the edge of the upper support and the edge of the support partition, respectively, and are fixed and sealed.

[0018] Furthermore, the lower side of the upper bracket has a third mounting ring groove with an outward opening near the middle position, and the support partition has an upwardly extending connecting pipe section near the middle position. The top edge of the connecting pipe section is folded back to form a fourth mounting ring groove with an downward opening. The two ends of the lifting adjustment bladder extend into the third and fourth mounting ring grooves at the middle position of the upper bracket and the top of the connecting pipe section, respectively, and are fixed and sealed.

[0019] Furthermore, a height sensor is installed on the upper support to detect the real-time height of the upper support. Beneficial effects:

[0020] This invention innovatively provides an adaptive vibration isolation device. Centered on a supporting partition, upper and lower supports are installed on the upper and lower sides of the partition. The lower support is fixed to the lower side of the partition, while the upper support can move vertically on the partition. A lifting adjustment chamber is provided between the upper support and the partition, and a damping chamber is also provided between them, connected to a buffer chamber. The lifting height of the upper support is controlled by filling or removing fluid from the lifting adjustment chamber, thereby adjusting the height of the drive motor. When the relative height between the upper support and the partition changes, buffer medium is added to or removed from the damping chamber via the buffer chamber, achieving damping and vibration reduction. While meeting the vibration reduction requirements of the drive motor, this invention can adjust the drive motor, drive shaft, and drive axle to a 0-angle state regardless of load changes, avoiding vehicle vibration and noise caused by angles between these components, improving vehicle comfort, and solving the problem of vehicle body sagging due to load changes in existing technologies, leading to vibration and noise.

[0021] To achieve the above objectives, the present invention also provides a vehicle using an adaptive vibration isolation device. The adaptive vibration isolation device includes a support plate and upper and lower brackets installed on the upper and lower sides of the support plate. The lower bracket is fixedly connected to the support plate, and the upper bracket is guided and movably installed on the support plate in the vertical direction. A lifting adjustment bladder is provided between the upper bracket and the support plate, and a damping bladder is also provided between the upper bracket and the support plate. The damping bladder is connected to a buffer bladder. When the relative height between the upper bracket and the support plate changes, the buffer bladder replenishes the buffer medium into the damping bladder or retracts the buffer medium from the damping bladder through the buffer bladder.

[0022] Furthermore, the guide structure between the upper support and the support partition is set inside the lifting adjustment bladder or the vibration damping bladder.

[0023] Furthermore, the lifting adjustment bladder is a lifting air bladder, while the shock-absorbing bladder and the buffer bladder are both oil bladders, with the lifting adjustment bladder located in the middle of the shock-absorbing bladder.

[0024] Furthermore, there is a receiving space between the lower support and the supporting partition, and the buffer bladder is disposed within this receiving space.

[0025] Furthermore, the lower support has a basin-like structure, and the basin opening is fixedly connected to the support partition, forming an accommodating space within the basin's inner cavity.

[0026] Furthermore, the opening of the buffer bladder is sealed to the lower side of the support partition, and the support partition is provided with a connecting structure to realize the connection between the shock-absorbing bladder and the buffer bladder.

[0027] Furthermore, the connecting structure is a throttling damping structure.

[0028] Furthermore, the throttling damping structure is a throttling valve.

[0029] Furthermore, the throttle valve is an electrically controlled valve, which can adjust the opening degree.

[0030] Furthermore, the support partition is provided with a through hole, and the throttle valve includes a valve body connected to the through hole on the support partition. The valve body has a valve body cavity communicating with the through hole. The valve body cavity is connected with valve ports of different diameters. The valve core in the valve body cavity opens different valve ports at different positions so as to communicate with the through hole.

[0031] Furthermore, both the vibration damping bladder and the buffer bladder are circular bladders with multiple interconnected structures, which are evenly arranged around the circumference.

[0032] Furthermore, both the support partition and the upper bracket are circular, and the vibration damping bladder and the lifting adjustment bladder are sealed to the upper bracket and the support partition.

[0033] Furthermore, the upper support is a basin-type support with the rim facing downwards. The side wall edge of the upper support is folded back to form a first mounting ring groove with the opening facing upwards. The edge of the support partition is folded back to form a second mounting ring groove with the opening facing inwards. The two ends of the vibration damping bladder extend into the first and second mounting ring grooves at the edge of the upper support and the edge of the support partition, respectively, and are fixed and sealed.

[0034] Furthermore, the lower side of the upper bracket has a third mounting ring groove with an outward opening near the middle position, and the support partition has an upwardly extending connecting pipe section near the middle position. The top edge of the connecting pipe section is folded back to form a fourth mounting ring groove with an downward opening. The two ends of the lifting adjustment bladder extend into the third and fourth mounting ring grooves at the middle position of the upper bracket and the top of the connecting pipe section, respectively, and are fixed and sealed.

[0035] Furthermore, a height sensor is installed on the upper support to detect the real-time height of the upper support.

[0036] Beneficial effects:

[0037] This invention improves the vibration isolation structure in existing vehicles, including an adaptive vibration isolation device. The adaptive vibration isolation device is centered on a support plate, with upper and lower supports installed on the upper and lower sides of the support plate. The lower support is fixed to the lower side of the support plate, and the upper support can move vertically on the support plate. A lifting adjustment bladder is provided between the upper support and the support plate, and a damping bladder is also provided between the upper support and the support plate. The damping bladder is connected to a buffer bladder. The height of the upper support is controlled by filling or removing fluid medium from the lifting adjustment bladder, thereby adjusting the height of the drive motor. When the relative height between the upper support and the support partition changes, buffer medium is added to or removed from the damping bladder through the buffer bladder, achieving the purpose of buffering and vibration reduction. While meeting the vibration reduction requirements of the drive motor, this invention can adjust the drive motor, drive shaft, and drive axle to a 0-angle state regardless of load changes, avoiding vehicle vibration and noise caused by the angle between the three components, improving vehicle comfort, and solving the problem of vehicle body sinking due to load changes in the prior art, which leads to vibration and noise. Attached Figure Description

[0038] Figure 1 is a schematic diagram of the assembly structure of the vehicle chassis transmission mechanism;

[0039] Figure 2 is a front view of the chassis transmission mechanism of the vehicle under full load.

[0040] Figure 3 is a front view of the chassis transmission mechanism of the vehicle when it is unloaded;

[0041] Figure 4 is a schematic diagram of the assembly structure of a drive motor using rubber vibration isolation;

[0042] Figure 5 is a schematic diagram of the assembly structure of the adaptive vibration isolation device;

[0043] Figure 6 is a schematic diagram of the upper support structure of the adaptive vibration isolation device;

[0044] Figure 7 is a schematic diagram of the support diaphragm structure of the adaptive vibration isolation device;

[0045] Figure 8 is a schematic diagram of the structure of the throttle valve of the adaptive vibration isolation device when the small-diameter channel is open;

[0046] Figure 9 is a schematic diagram of the structure of the throttle valve of the adaptive vibration isolation device when the large-diameter channel is open;

[0047] Figure 10 is a schematic diagram of the lower support structure of the adaptive vibration isolation device;

[0048] Figure 11 is a flowchart of the adaptive vibration isolation device controlling the drive motor.

[0049] In the diagram: 1. Supporting partition; 101. Connecting pipe section; 2. Upper bracket; 3. Lower bracket; 4. Lifting adjustment bladder; 5. Vibration damping bladder; 6. Buffer bladder; 7. Guide structure; 71. Guide rod; 72. Guide tube; 8. Throttle valve; 81. Lead wire groove; 82. Electronically controlled valve core; 9. Mounting ring groove; 10. Height sensor; 11. Drive motor; 12. Drive shaft; 13. Drive axle; 14. Leaf spring; 15. Leaf spring mounting point; 16. Tire; 17. Frame; 18. Rubber vibration isolation; 19. Fixing bolt. Detailed Implementation

[0050] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0051] The concept and principle of this invention are as follows: the upper bracket of the vibration isolation device is directly connected to the housing of the drive motor. A lifting adjustment bladder is provided between the upper bracket and the supporting partition. By filling or releasing the fluid medium in the lifting adjustment bladder, the lifting and lowering of the upper bracket is controlled, thereby adjusting the height and angle of the drive motor. When the drive motor sinks or rises due to changes in vehicle load, the height of the upper bracket is changed, and the height of the drive motor is adjusted in time. This adjusts the angle between the drive motor, drive shaft, and drive axle to a 0-degree angle, avoiding vibration and noise problems caused by the angle between these three components.

[0052] Based on the above principles and concepts, this invention provides various embodiments of the adaptive vibration isolation device for further explanation.

[0053] Based on the above principles, in a basic embodiment, as shown in Figures 5-10, with the supporting partition 1 as the center, an upper bracket 2 is installed on the upper side of the supporting partition 1, and a lower bracket 3 is fixedly connected to the lower side. A vertical guide structure 7 is provided between the upper bracket 2 and the supporting partition 1 to enable the upper bracket 2 to move vertically. A lifting adjustment bladder 4 is also provided between the upper bracket 2 and the supporting partition 1. By filling or extracting the fluid medium into the lifting adjustment bladder 4, the length of the lifting adjustment bladder 4 in the vertical direction is changed, thereby controlling the vertical movement of the upper bracket 2. A reducing mechanism is also provided between the upper bracket 2 and the supporting partition 1. The vibration damping bladder 5 is connected to the buffer bladder 6. When the drive motor 11 vibrates, the upper bracket 2 compresses the vibration damping bladder 5 or drives it to move upward, so that the damping oil flowing between the vibration damping bladder 5 and the buffer bladder 6 dampens and buffers the vibration of the drive motor 11. When the height of the drive motor 11 is raised, the volume of the vibration damping bladder 5 increases. Since the total volume of damping oil in the vibration damping bladder 5 and the buffer bladder 6 remains unchanged, the damping oil flows from the buffer bladder 6 to the vibration damping bladder 5, so that the height of the upper bracket 2 rises slowly and steadily. When the height of the drive motor 11 is lowered, the vibration damping bladder 5 is compressed, and the damping oil flows from the vibration damping bladder 5 to the buffer bladder 6, so that the height of the upper bracket 2 falls slowly and steadily.

[0054] Based on the above embodiments, in one embodiment, the guide structure between the upper support 2 and the support partition 1 is a plurality of telescopic support cylinders evenly arranged circumferentially on the edge of the support partition 1 and connected to the upper support 2. The telescopic support rod includes a sleeve and a rod core. The rod core is installed in the sleeve and moves up and down along the sleeve. One end of the sleeve is fixed to the support partition 1, and one end of the rod core is fixed to the upper support 2. The plurality of telescopic support rods arranged along the edge of the support partition 1 serve as a guide structure to assist the upper support in moving up and down. In a more preferred embodiment, as shown in the embodiments provided in Figures 5-10, the guide structure between the upper support 2 and the support partition 1 includes a guide rod 71 and a guide tube 72. The guide rod 71 is inserted into the guide tube 72 and moves along the guide tube 72. The guide structure 7 is set as a whole in the lifting adjustment bladder or the vibration damping bladder. This can ensure that the movement of the guide rod 71 along the guide tube 72 is not affected by the complex external environment and avoid sand and dust entering the guide tube 72, which would cause the guide structure 7 to not expand and contract smoothly and wear the guide rod 71.

[0055] Based on the above embodiments, in one embodiment, as shown in Figures 5-10, the lifting adjustment bladder 4 is a lifting airbag, and the shock-absorbing bladder 5 and the buffer bladder 6 are oil bladders. The lifting adjustment bladder 4 is located in the middle of the shock-absorbing bladder 5. The shock-absorbing bladder 5 is fixed to the upper support 2 along the bottom edge of the upper support 2. The lifting airbag is connected to an air pump to control the volume of the inner cavity of the lifting airbag and control the lifting of the upper support 2. Since the lifting airbag is located inside the shock-absorbing bladder 5, the shock-absorbing bladder 5 and the buffer bladder 6 are filled with damping oil. Under the pressure of the damping oil, the lifting airbag can change its volume more stably in the vertical direction when inflated, reducing the expansion of the lifting airbag in the horizontal direction. In another embodiment, the lifting adjustment bladder 4 and the shock-absorbing bladder 5 are respectively installed on the support partition 1. The bottom of the upper support 2 is connected to the lifting adjustment bladder 4. The upper support 2 is also provided with an extension arm to connect the shock-absorbing bladder 5. The height adjustment and vibration reduction of the upper support 2 are achieved by the parallel arrangement of the lifting adjustment bladder 4 and the shock-absorbing bladder 5.

[0056] Based on the above embodiments, in one embodiment, as shown in Figures 5 and 10, there is a certain accommodating space between the lower support 3 and the supporting partition 1. This accommodating space is connected to the external environment, and the buffer bladder 6 is placed in this accommodating space to ensure that the buffer bladder 6 can deform freely. In another embodiment, the lower support 3 is only used to support the supporting partition 1, and the buffer bladder 6 and the vibration damping bladder 5 are arranged side by side on the upper surface of the supporting partition 1.

[0057] Based on the above embodiments, in one embodiment, as shown in Figures 5 and 10, the lower support 3 is a basin-type structure, and the basin opening is fixedly connected to the support partition 1 by bolts and nuts; in another embodiment, the lower support 3 can be set as a square frame structure, with mounting holes provided on the four corner columns, which are fixed to the support partition 1 by bolts and nuts, and the buffer bladder 6 is set inside the frame.

[0058] Based on the above embodiments, in one embodiment, as shown in Figures 5-10, the opening of the buffer bladder 6 is sealed to the bottom of the support partition 1, and the support partition 1 is also provided with a communication structure, through which the buffer bladder 6 is connected to the vibration damping bladder 5 sealed to the upper side of the support partition 1.

[0059] Based on the above embodiments, in one embodiment, the connecting structure is a through hole opened on the support partition 1, and the damping oil in the damping bladder 5 and the buffer bladder 6 provides buffer damping through the through hole. In a more preferred embodiment, as shown in the embodiments provided in Figures 5-9, the support partition 1 has a plurality of mounting holes evenly arranged in a circumferential direction, and a plurality of throttling damping structures are installed in the mounting holes as a connecting structure, which can control the flow rate of the damping oil and adjust the damping magnitude.

[0060] Based on the above embodiments, in one embodiment, as shown in Figures 5-9, the throttling damping structure is a throttling valve 8. The flow rate of the damping oil is controlled by adjusting the opening and closing of the valve port, thereby controlling the damping magnitude. In another embodiment, multiple through holes can be opened on the support partition 1, and a rotatable cover plate can be provided on the upper or lower surface of the support partition plate. The opening and closing status of the through holes can be controlled by adjusting the angle of the cover plate, thereby adjusting the flow rate of the damping oil and changing the damping magnitude.

[0061] Based on the above embodiments, in one embodiment, as shown in Figures 5-9, a lead wire groove 81 is also provided on the support partition 1 at the position for installing the throttle valve 8. The throttle valve 8 includes a valve body and an electrically controlled valve core 82. The electrically controlled valve core 82 is connected to an external control structure through the lead wire groove 81 to remotely control the opening and closing of the valve port.

[0062] Based on the above embodiments, in one embodiment, the throttle valve 8 has only two valve ports connecting the damping bladder 5 and the buffer bladder 6. The opening and closing size of the valve ports is controlled by the electrically controlled valve core 82 to control the fluid flow rate. In a more preferred embodiment, as shown in Figures 5-9, the throttle valve 8 has three valve ports with different orifice diameters and an electrically controlled valve core 82 with an arc-shaped thin-walled structure. The electrically controlled valve core 82 rotates within the valve core to control the opening and closing of the valve ports. The support partition 1 is provided with multiple through holes. The valve with the largest orifice diameter among the three valve ports of the throttle valve 8 is connected to one of the through holes. The electronically controlled valve core 82 controls the opening and closing of two other valve ports with different orifices to control the fluid flow rate, as shown in Figure 9. When the drive motor 11 is running at low torque, the rotation angle of the electronically controlled valve core 82 is controlled to connect the valve port with the largest orifice and the valve port with the medium orifice. At this time, the damping oil flow rate is the minimum, providing small damping and realizing low-frequency vibration isolation of the drive motor 11. As shown in Figure 8, when the drive motor 11 is running at high torque, the valve port with the medium orifice is closed and the valve port with the largest orifice and the valve port with the smallest orifice are connected. At this time, the damping oil flow rate is the maximum, providing large damping and suppressing the vibration amplitude of the drive motor 11.

[0063] Based on the above embodiments, in one embodiment, the damping bladder 5 and the buffer bladder 6 use folded rubber corrugated tubes. In another embodiment, as shown in the embodiments provided in Figures 5-10, the damping bladder 5 uses a circular bladder that surrounds the upper bracket 2 and the supporting partition 1 and is fixed to the connection structure of the two. The buffer bladder 6 is a circular membrane. The edge of the buffer bladder 6 is fixed to the lower surface of the supporting partition 1, and the middle hangs down to form a pocket-shaped structure. The damping bladder 5 and the buffer bladder 6 use rubber tempered membrane as material. Multiple connecting structures for connecting the damping bladder 5 and the buffer bladder 6 are provided on the supporting partition 1 and are evenly arranged in a circumferential direction on the supporting partition 1.

[0064] Based on the above embodiments, in one embodiment, as shown in Figures 5-10, the upper bracket 2 and the supporting partition 1 use a circular structure corresponding to the shape of the vibration damping bladder 5 and the buffer bladder 6. In other embodiments, in order to adapt to different working conditions and different installation environments, the shape of the upper bracket 2 and the supporting partition 1 can be adjusted. The upper bracket 2 and the supporting partition 1 with different shapes all fall within the protection scope of this invention.

[0065] Based on the above embodiments, in one embodiment, the upper bracket 2 and the supporting partition 1 are configured as circular flat plate structures, and mounting grooves are drawn on the flat plate to fix and connect the vibration damping bladder 5. In a more preferred embodiment, as shown in the embodiments provided in Figures 5-8, the upper bracket 2 is configured as a circular basin structure, and mounting ring grooves 9 with upward openings formed by folding back are provided in the middle of the basin bottom and the top of the side wall of the upper bracket 2. The edge of the supporting partition 1 is also provided with mounting ring grooves 9 with openings formed by folding back facing the inside of the supporting partition 1. The two ends of the vibration damping bladder 5 extend into the two mounting ring grooves 9 respectively and are vulcanized and fixed. The supporting partition 1 and the upper bracket 2 configured in this way have higher structural strength. In another embodiment, the vibration damping bladder 5 can also be fixed to the upper bracket 2 and the supporting partition 1 by bolts and nuts in conjunction with sealing gaskets.

[0066] Based on the above embodiments, in one embodiment, as shown in Figures 5-9, the lower side of the upper bracket 2 is provided with an outward-facing mounting ring groove 9 near the middle, and the middle of the support partition 1 is also provided with an upward-extending connecting pipe section 101. The top of the connecting pipe section 101 is provided with a downward-facing mounting ring groove 9, and the two ends of the lifting adjustment bladder 4 are respectively installed in the two mounting ring grooves 9. In another embodiment, the vibration damping bladder 5 can also be fixed to the upper bracket 2 and the support partition 1 by bolts and nuts in conjunction with sealing gaskets.

[0067] Based on the above embodiments, in one embodiment, as shown in Figures 5 and 6, a height sensor 10 is also installed on the upper support 2 to detect the relative height of the upper support 2.

[0068] The present invention also provides a related embodiment of a vehicle that uses a vibration isolation device, which is the adaptive vibration isolation device in the above embodiment, and will not be described in detail here.

[0069] The vehicle provided by this invention also includes a vehicle control system, as shown in Figure 11. The vehicle control system includes a controller for adjusting the height of the drive motor. A strain gauge is also installed on the leaf spring 14. The strain gauge is connected to the controller. The controller is also connected to a supply system that supplies fluid medium to the lifting adjustment bladder 4. When the vehicle is started, the controller determines the vehicle's gear position. When it is not in a moving gear, the controller does not output a control signal. When it is in a moving gear, the vehicle is in a driving state and the vehicle load no longer changes. At this time, the control signal acquires the stress value of the strain gauge, calculates the deformation of the arc height of the leaf spring 14, acquires the change in the height position of the frame and the drive axle 13, and then outputs the reverse adjustment amount of the height position of the drive motor 11 based on the change in the height position of the frame and the drive axle 13, thereby adjusting the height of the drive motor 11. Specifically, during adjustment, when the height of the drive motor 11 needs to be increased, the supply system replenishes fluid medium into the lifting adjustment chamber 4. The height of the adaptive vibration isolation device increases, which in turn increases the height of the drive motor 11. The height increase is detected by a height sensor, and once the predetermined height is reached, the replenishment of fluid medium into the lifting adjustment chamber stops. When the height of the drive motor needs to be decreased, the supply system removes fluid medium from the lifting adjustment chamber, which lowers the height of the adaptive vibration isolation device, which in turn lowers the height of the drive motor 11. The height decrease is detected by a height sensor, and once the predetermined height is reached, the fluid medium in the lifting adjustment chamber 4 is no longer removed. This ensures that the drive motor 11, drive shaft 12, and drive axle 13 remain coaxial under different load conditions, avoiding vibration and noise caused by angles between these three components.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. An adaptive vibration isolation device, characterized in that, The device includes a support partition and upper and lower brackets installed on the upper and lower sides of the support partition. The lower bracket is fixedly connected to the support partition, and the upper bracket is movably mounted on the support partition in the vertical direction. A lifting adjustment chamber is provided between the upper bracket and the support partition, and a vibration damping chamber is also provided between the upper bracket and the support partition. The vibration damping chamber is connected to a buffer chamber. When the relative height between the upper bracket and the support partition changes, the buffer chamber replenishes the buffer medium into the vibration damping chamber or retracts the buffer medium from the vibration damping chamber.

2. The adaptive vibration isolation device according to claim 1, characterized in that, The guide structure between the upper bracket and the supporting partition is disposed in the lifting adjustment bladder or the vibration damping bladder.

3. An adaptive vibration isolation device according to claim 1 or 2, characterized in that, The lifting adjustment bladder is a lifting air bladder, the shock-absorbing bladder and the buffer bladder are both oil bladders, and the lifting adjustment bladder is located in the middle of the shock-absorbing bladder.

4. An adaptive vibration isolation device according to any one of claims 1-3, characterized in that, There is a receiving space between the lower bracket and the supporting partition, and the buffer bladder is disposed within the receiving space.

5. An adaptive vibration isolation device according to claim 4, characterized in that, The lower support is a basin-type structure, and the basin opening is fixedly connected to the support partition, with the inner cavity of the basin forming the receiving space.

6. The adaptive vibration isolation device according to claim 1, characterized in that, The opening of the buffer bladder is sealed to the lower side of the support partition, and the support partition is provided with a communication structure to realize the communication between the shock-absorbing bladder and the buffer bladder.

7. An adaptive vibration isolation device according to claim 6, characterized in that, The connection structure is a throttling damping structure.

8. An adaptive vibration isolation device according to claim 7, characterized in that, The throttling damping structure is a throttling valve.

9. An adaptive vibration isolation device according to claim 8, characterized in that, The throttle valve is an electrically controlled valve, which can adjust the opening degree.

10. An adaptive vibration isolation device according to claim 8, characterized in that, The supporting partition is provided with a through hole, and the throttle valve includes a valve body connected to the through hole on the supporting partition. The valve body has a valve body cavity communicating with the through hole. The valve body cavity is connected with valve ports of different diameters. The valve core in the valve body cavity opens different valve ports at different positions to communicate with the through hole.

11. An adaptive vibration isolation device according to any one of claims 1-10, characterized in that, Both the vibration damping bladder and the buffer bladder are circular bladders, and there are multiple connecting structures that are evenly arranged around the circumference.

12. An adaptive vibration isolation device according to claim 11, characterized in that, Both the supporting partition and the upper bracket are circular, and the two ends of the vibration damping bladder and the two ends of the lifting adjustment bladder are respectively sealed to the upper bracket and the supporting partition.

13. An adaptive vibration isolation device according to claim 12, characterized in that, The upper support is a basin-type support with the rim facing downwards. The side wall edge of the upper support is folded back to form a first mounting ring groove with the opening facing upwards. The edge of the support partition is folded back to form a second mounting ring groove with the opening facing inwards. The two ends of the vibration damping bladder extend into the first mounting ring groove and the second mounting ring groove at the edge of the upper support and the edge of the support partition, respectively, and are fixed and sealed.

14. An adaptive vibration isolation device according to claim 12, characterized in that, The lower side of the upper bracket has a third mounting ring groove with an outward opening near the middle position. The support partition has an upwardly extending connecting pipe section near the middle position. The top edge of the connecting pipe section is folded back to form a fourth mounting ring groove with a downward opening. The two ends of the lifting adjustment bladder extend into the third and fourth mounting ring grooves at the middle position of the upper bracket and the top of the connecting pipe section, respectively, and are fixed and sealed.

15. An adaptive vibration isolation device according to any one of claims 1-14, characterized in that, The upper support is also equipped with a height sensor to detect the real-time height of the upper support.

16. A vehicle including a vibration isolation device, characterized in that, The vibration isolation device is the adaptive vibration isolation device provided in any one of claims 1-15.

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