An inflating and air supplementing system and method for an amphibious bridge

Abstract

The present invention discloses an air inflation and replenishment system and an air inflation and replenishment method for an amphibious bridge, belonging to the technical field of air inflation and replenishment systems for floating bridges. The air inflation and replenishment system includes a first air inflation motor fixed to the amphibious bridge, a controller, a pipeline for connecting the first air inflation motor to each airbag, and valves and sensors arranged on each pipeline; a first switch valve is arranged on the first main pipeline connected to the first air inflation motor; a proportional valve is arranged on each branch pipeline connecting each airbag; a sensor is arranged between each proportional valve and the air inlet of the corresponding airbag to monitor the air intake volume and pressure of the corresponding branch pipeline and transmit the monitoring data to the controller; the controller controls the start and stop of the first air inflation motor, the opening and closing of the first switch valve, and the opening degree of each proportional valve according to the received monitoring data. The amphibious bridge can realize automatic air inflation and replenishment.

Description

Technical Field

[0001] The present invention belongs to the technical field of pontoon inflating and air replenishing systems, and particularly relates to a pontoon inflating and air replenishing system and an inflating and air replenishing method for an amphibious bridge. Background Art

[0002] The traditional inflating and air replenishing system of an amphibious bridge mainly consists of an air charging and discharging motor and a manual switch valve. When it is necessary to inflate and replenish air to the air bags on both sides of the amphibious bridge, it is necessary to manually open the air charging and discharging motor and the manual switch valve, resulting in low automation. Summary of the Invention

[0003] In view of this, the present invention provides an inflating and air replenishing system for an amphibious bridge. The inflating and air replenishing system includes a first inflating motor and a controller. The first inflating motor is connected to the air bags on both sides of the amphibious bridge through pipelines. The sensors, switch valves, and proportional valves on the pipelines can all be automatically controlled by the controller, solving the problem of low automation of the traditional inflating and air replenishing system of the amphibious bridge.

[0004] The present invention adopts the following technical solutions:

[0005] An inflating and air replenishing system for an amphibious bridge, comprising a first inflating motor fixedly installed on the amphibious bridge, a controller, pipelines for connecting the first inflating motor to each air bag, and valves and sensors arranged on each pipeline;

[0006] The first inflating motor is connected to the air bags arranged on the left and right sides of the amphibious bridge through pipelines, and a first switch valve is arranged on the first main pipeline connected to the first inflating motor;

[0007] A proportional valve is arranged on each branch pipeline connecting each air bag for adjusting the air intake rate of the corresponding air bag;

[0008] A sensor is arranged between each proportional valve and the air intake port of the corresponding air bag for monitoring the air intake volume and pressure of the corresponding branch pipeline and transmitting the monitoring data to the controller;

[0009] The controller controls the start and stop of the first inflating motor, the opening and closing of the first switch valve, and the opening degree of each proportional valve according to the received monitoring data.

[0010] Furthermore, it further includes a second main pipeline arranged on one side of the amphibious bridge;

[0011] One end of the second main pipeline is communicated with the branch pipeline, and the other end can be connected to a second inflating motor on the shore;

[0012] A second shut-off valve is provided on the second main pipeline, and the second shut-off valve can be opened or closed under the control of the controller.

[0013] Further, it further includes a third main pipeline provided on the other side of the amphibious bridge;

[0014] One end of the third main pipeline is communicated with the branch pipeline, and the other end can be connected to the second inflatable motor;

[0015] A third shut-off valve is provided on the third pipeline, and the third shut-off valve can be opened or closed under the control of the controller.

[0016] Further, the power of the first inflatable motor is less than the power of the second inflatable motor.

[0017] In addition, the present invention also provides an inflating method for an amphibious bridge based on the above-mentioned amphibious bridge inflating and air-supplementing system, including the following steps:

[0018] Step 1: Connect the second main pipeline or the third main pipeline to the second inflatable motor;

[0019] Step 2: If the second main pipeline is connected to the second inflatable motor, start the second inflatable motor through the controller, and control the second shut-off valve and the proportional valve to open to inflate the airbag;

[0020] If the third main pipeline is connected to the second inflatable motor, the controller starts the second inflatable motor and opens the third shut-off valve and the proportional valve to inflate the airbag.

[0021] Further, before the step 2, the controller collects the pressure values of each airbag, and compares the collected pressure values with the preset pressure values in the controller, and the preset pressure values are less than 0 MPa;

[0022] If the pressure value of any airbag is less than or equal to the preset pressure value or greater than 0 MPa, then enter the step 2, otherwise, check the airtightness of the airbag until the pressure value of any airbag is less than or equal to the preset pressure value or greater than 0 MPa.

[0023] Further, when inflating the airbag, the controller collects the intake air volume detected by each sensor, and calculates the average intake air rate of all airbags and the average intake air rate of each airbag according to the intake air volume;

[0024] If the intake air rate of a certain airbag is less than the average intake air rate of all airbags, the controller increases the opening degree of the proportional valve corresponding to the airbag;

[0025] If the intake rate of a certain airbag is greater than the average intake rate of all airbags, the controller will reduce the opening degree of the proportional valve corresponding to this airbag.

[0026] Further, when inflating the airbag, the controller collects the intake air volume and the pressure of each airbag. When the intake air volume of a certain airbag is greater than the preset intake air volume in the controller and the pressure is greater than the preset pressure in the controller, the controller closes the proportional valve corresponding to this airbag and stops inflating this airbag.

[0027] Moreover, the present invention also provides a method for air supplementing of an amphibious bridge based on the above-mentioned air inflation and air supplementing system for an amphibious bridge, including the following steps:

[0028] Step A: The controller collects the pressure value of each airbag in real time and compares it with the preset minimum pressure value in the controller.

[0029] Step B: If the pressure value of a certain airbag is less than the preset minimum pressure value, the controller starts the first inflator motor, opens the first on-off valve and the proportional valve corresponding to this airbag, and supplements air to this airbag.

[0030] Further, when supplementing air to the airbag, the controller collects the pressure values of the set number of airbags, and obtains the derivative of the fitting function of the pressure values of the set number. If there is a value less than zero in the derivative, stop air supplementing.

[0031] Beneficial effects:

[0032] (1) In the air inflation and air supplementing system for an amphibious bridge of the present invention, the first inflator motor, the on-off valve, the proportional valve and the sensor are all connected to the controller by signals. The controller can receive the monitoring data of the sensor and control the start and stop of the first inflator motor, the opening and closing of the first on-off valve and the opening degree of each proportional valve according to the monitoring data, so as to realize the automatic air inflation and air supplementing of the amphibious bridge.

[0033] (2) In the air inflation and air supplementing system for an amphibious bridge of the present invention, a second main pipeline capable of being connected to a second inflator motor on the shore is further provided on the left / right side of the amphibious bridge. Thus, when the left / right side of the amphibious bridge is close to the shore, the airbag can be quickly inflated through the second inflator motor.

[0034] (3) The inflating method of the amphibious bridge of the present invention. Before inflating the airbag, compare the pressure value of each airbag with the preset pressure value in the controller, where the preset pressure value is less than 0 MPa. If the pressure value of any airbag is less than or equal to the preset pressure value or greater than 0 MPa, it indicates that the airbag is not damaged and the next inflating step can be carried out. Otherwise, check the airtightness of the airbag until the pressure value of any airbag is less than or equal to the preset pressure value or greater than 0 MPa, and then carry out the next inflating step. This ensures that damaged airbags can be detected in time, making the amphibious bridge more reliable in subsequent use.

[0035] (4) The inflating method of the amphibious bridge of the present invention. During the process of inflating the airbag, the controller adjusts the opening degree of the proportional valve according to the average air intake rate, so that the air intake rate of each airbag is kept as consistent as possible, thereby keeping the amphibious bridge balanced during the inflating process and avoiding the adverse consequence of the amphibious bridge tilting due to different air intake rates of the airbags.

[0036] (5) If only the pressure is used to judge whether the airbag is fully inflated, when problems such as pipeline blockage or the airbag being squeezed by foreign objects occur, the controller will misjudge that the airbag is fully inflated. If only the air intake volume is used to judge whether the airbag is fully inflated, when problems such as airbag leakage occur, the controller will also misjudge that the airbag is fully inflated. The inflating method of the amphibious bridge of the present invention. When inflating the airbag, the controller collects the air intake volume of each airbag and the pressure of each airbag. Only when the air intake volume of a certain airbag is greater than the preset air intake volume in the controller and the pressure is greater than the preset pressure in the controller, the controller closes the proportional valve corresponding to the airbag and stops inflating the airbag, avoiding the problem of the controller misjudging that the airbag is fully inflated and ensuring the reliability of the inflating process.

[0037] (6) The air supplementing method of the amphibious bridge of the present invention. The controller real-time collects the pressure value of each airbag and compares it with the preset minimum pressure value in the controller. If the pressure value of a certain airbag is less than the preset minimum pressure value, the controller starts the first inflating motor, opens the first switch valve and the proportional valve corresponding to the airbag, and supplements air to the airbag, ensuring that when the amphibious bridge sails in water after being fully inflated, it can real-time monitor the airbag pressure and automatically supplement air to the airbag in time according to the airbag pressure, ensuring the reliability of the use of the amphibious bridge.

[0038] (7) The air supplementing method of the amphibious bridge of the present invention. The controller fits the collected pressure value of the airbag into a function, obtains the derivative of the fitted function, and judges whether there is a problem that the air leakage rate due to airbag damage is greater than the air supplementing rate according to the value of the derivative, ensuring the reliability of the amphibious bridge in use. Description of the Drawings

[0039] Figure 1Schematic diagram of the air inflation and replenishment system for the amphibious bridge provided in Embodiment 1 of the present invention;

[0040] Figure 2 Schematic diagram of the air inflation and replenishment system for the amphibious bridge provided in Embodiment 2 of the present invention;

[0041] Figure 3 Schematic diagram of the air inflation and replenishment system for the amphibious bridge provided in Embodiment 3 of the present invention;

[0042] Wherein, 1 - first sensor, 2 - second sensor, 3 - third sensor, 4 - fourth sensor, 5 - left front airbag, 6 - left rear airbag, 7 - right rear airbag, 8 - right front airbag, 9 - first proportional valve, 10 - second proportional valve, 11 - third proportional valve, 12 - fourth proportional valve, 13 - first inflation motor, 14 - controller, 15 - first switching valve, 16 - second switching valve, 17 - third switching valve. Detailed implementation manners

[0043] The following takes embodiments in conjunction with the attached drawings and elaborates on the present invention in detail.

[0044] During the use of the amphibious bridge, the situations where the airbags need to be inflated generally include the following two:

[0045] (1) The amphibious bridge has been used on water. In order to reduce the resistance of the amphibious bridge during water navigation and thus improve its water navigation speed, a part of the gas in the inflated airbag is discharged (after discharging a part of the gas, the pressure in the airbag is greater than 0 MPa). Thereafter, when a too high navigation speed is not required and instead a larger load-bearing capacity of the amphibious bridge is needed, the airbag with a part of the gas discharged is re-inflated;

[0046] (2) After the use of the amphibious bridge, in order to fold and store the airbag, the pressure in the airbag needs to be pumped to at least a negative value (this negative value is the maximum pressure at which the airbag can be folded). When the amphibious bridge is used next time, the airbag is re-inflated.

[0047] In addition, during the use of the amphibious bridge, the gas in the already inflated airbag will inevitably decrease, so the airbag needs to be replenished with gas.

[0048] The present invention realizes the automatic inflation / replenishment process of the airbags on both sides of the amphibious bridge by setting a first inflation motor 13 and a controller 14 on the amphibious bridge, and setting a first switching valve 15, a proportional valve and a sensor on the pipeline connecting the first inflation motor 13 and the airbag. The sensor monitors the gas volume entering the airbags on both sides of the amphibious bridge and the pressure of the airbag, and the controller controls the first switching valve 15 and the proportional valve on the pipeline according to the monitoring data of the sensor.

[0049] Embodiment 1:

[0050] As Figure 1 shown, an air inflation and air replenishment system for an amphibious bridge includes a first air inflation motor 13 fixedly installed on the amphibious bridge, a controller 14, pipelines for connecting the first air inflation motor 13 to each airbag, and valves and sensors arranged on each pipeline. Among them:

[0051] The first air inflation motor 13 is connected to four airbags (left front airbag 5, left rear airbag 6, right rear airbag 7, and right front airbag 8) symmetrically arranged on the left and right sides of the amphibious bridge through pipelines, and a first switch valve 15 is arranged on the first main pipeline connected to the first air inflation motor 13; proportional valves (corresponding to the above four airbags, namely the first proportional valve 9, the second proportional valve 10, the fourth proportional valve 12, and the third proportional valve 11) are arranged on each branch pipeline connecting each airbag, and are used to adjust the air intake rate of the corresponding airbag; sensors (respectively the fourth sensor 4, the third sensor 3, the second sensor 2, and the first sensor 1) are arranged on the branch pipelines between each proportional valve and the air intake port of the corresponding airbag, and are used to monitor the amount of gas entering the corresponding airbag and the pressure inside the corresponding airbag, and transmit the monitoring data to the controller 14; the controller 14 controls the start and stop of the first air inflation motor 13, the opening and closing of the first switch valve 15, and the opening degree of each proportional valve according to the received monitoring data.

[0052] It should be noted that the switch valves and each proportional valve on the pipeline are in a closed state under normal conditions (the state of not inflating, not replenishing air, and not exhausting air), and the first air inflation motor 13 is stopped under normal conditions. When inflating / replenishing air for the airbags of the amphibious bridge, only need to start the first air inflation motor 13 through the controller 14, and open the first switch valve 15 and the proportional valves on each branch pipeline through the controller 14. The degree of automation is high. Moreover, in this inflating / replenishing air process, each sensor can output two 4 - 20 mA current signals, corresponding to the pressure and air intake volume of the airbag respectively, that is, each airbag can simultaneously monitor the air intake volume and pressure of the airbag through one sensor, simplifying the structure of the air intake and inflation system. Of course, a sensor capable of recording the air intake volume and a sensor capable of recording the pressure can also be arranged on each branch pipeline where each airbag is located to achieve the same function.

[0053] Embodiment 2:

[0054] As Figure 2 shown, on the basis of Embodiment 1, a second main pipeline is arranged on the left side of the amphibious bridge. One end of the second main pipeline is communicated with the branch pipeline, and the other end can be connected to a second air inflation motor (not shown in the figure) on the shore. Moreover, a second switch valve 16 is arranged on the second main pipeline, and the second switch valve 16 can be opened or closed under the control of the controller 14.

[0055] The power of the second inflating motor is much greater than that of the first inflating motor 13. In this way, when the amphibious bridge approaches the shore on the left side, the second inflating motor can quickly inflate the amphibious bridge. Moreover, in the above two cases where the airbag needs to be inflated, the airbag can also be quickly inflated.

[0056] Because the power of the second inflating motor is much greater than that of the first inflating motor 13, when the second inflating motor is provided, the first inflating motor 13 can be used for air replenishment and the first above-mentioned case where inflation is required. This can not only meet the power requirement for airbag replenishment (when replenishing air into the airbag, the power requirement of the airbag for the air replenishment motor is much smaller than that for the inflating motor), but also reduce the occupied space of the second inflating motor and the weight of the amphibious bridge (there is no need to install the high-power second inflating motor on the amphibious bridge).

[0057] Embodiment 3:

[0058] As Figure 3 shown, on the basis of Embodiment 2, a third main pipeline is provided on the right side of the amphibious bridge. One end of the third main pipeline is communicated with the branch pipeline, and the other end can be connected to a second inflating motor (not shown in the figure) on the shore. Moreover, a third switching valve 17 is provided on the third main pipeline, and the third switching valve 17 can be opened or closed under the control of the controller 14.

[0059] In this way, when the amphibious bridge approaches the shore on the left side / right side, the second inflating motor can quickly inflate the amphibious bridge, which is more convenient and practical.

[0060] Embodiment 4:

[0061] On the basis of the above Embodiment 3, an inflating method for the amphibious bridge is provided, including the following steps:

[0062] Step 1: Connect the second main pipeline or the third main pipeline to the second inflating motor;

[0063] Step 2: Start the controller 14;

[0064] Step 3: If the second main pipeline is connected to the second inflating motor, the controller 14 starts the second inflating motor and opens the second switching valve 16 and the proportional valve to inflate the airbag;

[0065] If the third main pipeline is connected to the second inflating motor, the controller 14 starts the second inflating motor and opens the third switching valve 17 and the proportional valve to inflate the airbag.

[0066] In the third step above, whether inflating the airbag through the second main pipeline or the third main pipeline, the controller 14 will collect the intake air volume of the four airbags and the pressure of the four airbags during the inflation process. When the intake air volume of a certain airbag is greater than the preset intake air volume in the controller 14 and the pressure is greater than the preset pressure in the controller 14, the controller 14 will close the proportional valve corresponding to that airbag and stop inflating that airbag. Of course, it is also possible to use only one parameter, either the intake air volume or the pressure, to determine whether the airbag is fully inflated, but the reliability is not as high as using these two parameters.

[0067] As an improvement, before inflating the airbag, the controller 14 conducts a self-check on the damage condition of the airbag, that is, the controller 14 collects the pressure values of each airbag and compares the collected pressure values with the preset pressure values in the controller 14. Because according to the above two general situations where the airbag needs to be inflated, the preset pressure value is set to be less than 0 MPa, and this preset pressure is the maximum pressure at which the airbag can just be folded.

[0068] If the pressure value of any airbag of the amphibious bridge is less than or equal to the preset pressure value, it belongs to the second situation where the airbag of the amphibious bridge needs to be inflated. At this time, the airbag is not damaged, otherwise the pressure inside the airbag cannot be less than or equal to the preset pressure value; if the pressure of any airbag is greater than 0 MPa, it belongs to the first situation where the amphibious bridge needs to be inflated. At this time, the airbag is also not damaged, otherwise the pressure inside the airbag will be the same as the external environment, which is 0 Mpa (referring to the gauge pressure). Therefore, if the pressure values of any of the airbags are all less than or equal to the preset pressure value or greater than 0 MPa, it means that the airbag is not damaged and the self-check is completed, and the airbag can be inflated. Otherwise, that is, if the pressure of the airbag is greater than the preset pressure value and less than or equal to 0 MPa (the fact that the pressure is greater than the preset pressure value and less than 0 MPa means that the external air is entering the airbag through the damaged opening of the airbag until the airbag pressure is equal to the external air pressure), then the airbag tightness needs to be checked until the pressure values of any of the airbags are all less than or equal to the preset pressure value or greater than 0 MPa.

[0069] As a further improvement, when inflating the airbag, the controller 14 collects the intake air volume of each airbag detected by the sensors through the sensors, calculates the average intake air rate of the four airbags from the intake air volume, and if the intake air rate of a certain airbag is less than the average intake air rate of the four airbags, the controller will increase the opening degree of the proportional valve corresponding to this airbag; if the intake air rate of a certain airbag is greater than the average intake air rate of the four airbags, the controller 14 will decrease the opening degree of the proportional valve corresponding to this airbag (the proportional valve can adopt a control algorithm of pre-set opening degree plus PID regulation, where the pre-set opening degree is to calibrate the flow rate of each air supply pipeline during the debugging stage, fit the flow rate curve of each proportional valve and save it. When inflating, the controller finds the corresponding opening degree of the proportional valve according to the average intake air rate, and the control parameters of the PID regulation can be calibrated and obtained during debugging). Specifically, the controller 14 collects the intake air volume data of the four sensors every set period T, and calculates the average intake air rate of the four sensors (the cumulative intake air volume of the four sensors divided by the time) and the average intake air rate of each airbag after each collection, and adjusts the opening degree of the proportional valve corresponding to each airbag so that the intake air rate of each airbag can be close to or even equal to the average intake air rate of the four airbags.

[0070] In this way, during the inflation process, the intake air rates of the airbags are kept as consistent as possible, so that the amphibious bridge remains balanced during the inflation process, avoiding the adverse consequence of the amphibious bridge tipping due to different intake air rates of the airbags.

[0071] As a redundant design for the uniform and synchronous intake of each airbag during the inflation process of the amphibious bridge, during the above inflation process, after the controller 14 collects the value of the intake air volume each time, it sorts the values of the four intake air volumes in ascending order, and adds a preset value to the smallest value (if the difference between the intake air volumes of any two airbags of the amphibious bridge exceeds this preset value, it cannot maintain balance under the action of gravity and will tip) to obtain a new value, and calculates the differences between the values of the intake air volumes of the other three airbags and this new value respectively. If the difference is greater than this preset value, the flow valve of the corresponding airbag will be closed; sort the intake air volume values collected next time (after the set period T) in ascending order, add the above preset value to the smallest value after sorting to obtain a new value, and then calculate the differences between the intake air volume values of the other three airbags and this new value respectively. If the difference is greater than this preset value, the controller 14 will close the flow valve of the corresponding airbag, otherwise, the proportional valve will be opened. Generally, the difference between the intake air volumes of any two airbags of the amphibious bridge will not exceed the above preset value, and this redundant design will take effect in the case of the failure of ensuring the synchronous and uniform intake of the airbags.

[0072] In addition, it is worth noting that although in this embodiment, the second inflation motor is used when inflating the airbag, as described in Embodiment 1, the inflation and air replenishment system in Embodiment 1 can also realize the function of automatically inflating the airbag.

[0073] Example Five:

[0074] Based on the above Example Three, a method for replenishing air to an amphibious bridge is provided, including the following steps:

[0075] Step A: The controller 14 collects the pressure value of each airbag in real time and compares it with the preset minimum pressure value in the controller 14.

[0076] Step B: If the pressure value of a certain airbag is less than the preset minimum pressure value, the controller 14 starts the first inflation motor 13, opens the first switching valve 15 and the proportional valve corresponding to this airbag to replenish air to this airbag. If the pressure of a certain airbag is greater than the preset maximum pressure value, the controller 14 closes the corresponding proportional valve to stop replenishing air to this airbag. When all proportional valves are closed, the controller 14 also closes the second inflation motor and the first switching valve 15.

[0077] Moreover, when replenishing air to the airbag, the controller 14 collects the pressure values of the set number of airbags, and obtains the derivative of the fitting function of the pressure values of the set number. If there is a value less than zero in the derivative, it indicates that the airbag is damaged and the air leakage rate is greater than the air replenishment rate. Stop replenishing air until the airtightness problem of the airbag is solved, and then replenish air again.

[0078] Example Six:

[0079] Based on the above Example Four, an exhaust method for an amphibious bridge is provided.

[0080] This exhaust method is the same as the inflation method in Example Four, except that the controller 14 reverses the second inflation motor to discharge the gas in the airbag to the outside.

[0081] Moreover, similarly, two parameters are also used to jointly judge whether to stop exhausting. Specifically, the two parameters of exhaust volume and pressure are used. When the exhaust volume is greater than the pre-exhaust volume of the controller and the pressure is less than the preset minimum pressure value of the controller 14, the exhaust is completed. Judging whether to end the exhaust through these two parameters avoids the problem of misjudging that the gas in the airbag is exhausted due to other reasons such as pipeline blockage and airbag extrusion, making the exhaust process more reliable.

[0082] In addition, based on the above-mentioned first to sixth embodiments, the controller 14 can be controlled by holding a remote controller in one hand. Specifically, a first mode switching switch (which can switch among four modes: air supplementing / inflating / exhausting / closing), a power switch (the power switch of the controller 14), a direction switching switch (which can switch between left inflation and right inflation of the amphibious bridge), a second mode switching switch (for switching between inflation and exhaust working conditions), and signal indicating lights (inflation completion indicator light, air supplementing completion indicator light, exhaust completion indicator light, alarm indicator light) can be arranged on the hand-held remote controller. Through this hand-held remote controller, the controller 14 can be conveniently controlled according to the actual working conditions, so that the controller 14 runs different programs, thereby automatically completing the inflation, deflation, and exhaust of the amphibious bridge, and giving a prompt through the alarm indicator light when the airbag is damaged.

[0083] In summary, the above are only the preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An inflatable air replenishment system for an amphibious bridge, characterized in that, It includes a first inflatable motor fixedly installed on the amphibious bridge, a controller, pipelines for connecting the first inflatable motor to each airbag, and valves and sensors provided on each pipeline; The first inflatable motor is connected to the airbags arranged on the left and right sides of the amphibious bridge through pipelines, and a first on-off valve is provided on the first main pipeline connected to the first inflatable motor; A proportional valve is provided on each branch pipeline connecting each airbag for adjusting the air intake rate of the corresponding airbag; A sensor is provided between each proportional valve and the air intake port of the corresponding airbag for monitoring the air intake volume and pressure of the corresponding branch pipeline and transmitting the monitoring data to the controller; The controller controls the start and stop of the first inflatable motor, the opening and closing of the first on-off valve, and the opening degree of each proportional valve according to the received monitoring data; When inflating the airbag, the controller collects the air intake volume detected by each sensor and calculates the average air intake rate of all airbags and the average air intake rate of each airbag according to the air intake volume; If the air intake rate of a certain airbag is less than the average air intake rate of all airbags, the controller increases the opening degree of the proportional valve corresponding to this airbag; If the air intake rate of a certain airbag is greater than the average air intake rate of all airbags, the controller decreases the opening degree of the proportional valve corresponding to this airbag.

2. The inflatable air replenishment system for the amphibious bridge according to claim 1, wherein, It further includes a second main pipeline arranged on one side of the amphibious bridge; One end of the second main pipeline is communicated with the branch pipeline, and the other end can be connected to a second inflatable motor on the shore; A second on-off valve is provided on the second main pipeline, and the second on-off valve can be opened or closed under the control of the controller.

3. The inflating and air supplementing system of an amphibious bridge according to claim 2, characterized in that, It further includes a third main pipeline arranged on the other side of the amphibious bridge; One end of the third main pipeline is communicated with the branch pipeline, and the other end can be connected to the second inflatable motor; A third on-off valve is provided on the third main pipeline, and the third on-off valve can be opened or closed under the control of the controller.

4. The inflating and air-supplementing system of an amphibious bridge according to claim 3, characterized in that, The power of the first inflatable motor is less than the power of the second inflatable motor.

5. A method for inflating an amphibious bridge, characterized in that, Using the amphibious bridge air inflation and air supplementing system according to claim 3 or 4, it includes the following steps: Step 1: Connect the second main pipeline or the third main pipeline to the second inflatable motor; Step 2: If the second main pipeline is connected to the second inflatable motor, the controller controls the second inflatable motor to start and controls the second on-off valve and the proportional valve to open to inflate the airbag; If the third main pipeline is connected to the second inflatable motor, the controller starts the second inflatable motor and opens the third on-off valve and the proportional valve to inflate the airbag.

6. The inflating method of an amphibious bridge as claimed in claim 5, wherein Before step 2, the controller collects the pressure values of each airbag, the collected pressure values of the airbags are gauge pressures, and compares the collected pressure values with the preset pressure values in the controller, and the preset pressure values are less than 0 MPa; If the pressure value of any one of the air bags is less than or equal to the preset pressure value or greater than 0 MPa, then enter Step 2; otherwise, check the airtightness of the air bag until the pressure value of any one of the air bags is less than or equal to the preset pressure value or greater than 0 MPa.

7. A method for inflating a water-land dual-purpose bridge according to claim 5, characterized in that, When inflating the air bag, the controller collects the intake air volume of each air bag and the pressure of each air bag. When the intake air volume of a certain air bag is greater than the preset intake air volume in the controller and the pressure is greater than the preset pressure in the controller, the controller closes the proportional valve corresponding to the air bag and stops inflating the air bag.

8. A method for replenishing air in an amphibious bridge, characterized in that, Using the amphibious bridge air inflation and air supplementing system according to any one of claims 1-4, comprising the following steps: Step A: The controller continuously collects the pressure value of each air bag and compares it with the preset minimum pressure value in the controller. Step B: If the pressure value of a certain air bag is less than the preset minimum pressure value, the controller starts the first inflation motor, opens the first switching valve and the proportional valve corresponding to the air bag, and supplements air to the air bag.

9. The air replenishing method for an amphibious bridge according to claim 8, wherein When supplementing air to the air bag, the controller collects the pressure values of the set number of the air bags and obtains the derivative of the fitting function of the pressure values of the set number. If there is a value less than zero in the derivative, stop supplementing air.

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