Single-channel inflation and deflation airbag vibration isolation device

Abstract

The invention belongs to the technical field of vibration reduction and isolation, and relates to a single-channel inflation and deflation airbag vibration isolation device. According to the invention, through the single-channel design, the air bag inflation pipeline is connected in series, and only one single-channel inflation and deflation control unit and one displacement sensor are arranged, so that the cost and complexity of the system are reduced. The single-channel inflation and deflation air bag vibration isolation device comprises an air bag, a single-channel inflation and deflation control unit, a displacement sensor, a leakage-proof pipeline system and an air bag installation adjusting face. During working, based on monitoring of the pressure of the air bag and the displacement of the vibration isolation device, the single-channel inflation and deflation control unit accurately controls inflation and deflation of the air bag, and the posture of the device is adjusted. Through verification of ship engine and generator set vibration isolation application examples, the device is low in cost, high in reliability, accurate in vibration isolation and convenient to implement on site, has a fault early warning function and is high in practicability in the fields of ships and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration isolation, and particularly to an airbag vibration isolation device applied to fields such as ships, which realizes efficient vibration isolation function through a single-channel air charging and discharging design. Background Art

[0002] Airbag control systems have been widely used in fields such as high-end ships and high-speed rails, and significant breakthroughs have been made in miniaturization, high pressure, and localization. However, the current cost of airbag control systems is too high, which seriously restricts their full promotion in the civilian market. For example, in some vibration reduction scenarios of civilian ships or ordinary industrial equipment that are sensitive to costs, the high cost of airbag control systems makes related technologies difficult to popularize and apply.

[0003] To solve this problem, the present invention proposes a single-channel air charging and discharging airbag vibration isolation device. By connecting the air charging and discharging pipelines of airbags in series, the number of air charging and discharging control units is reduced, thereby reducing the cost of the control system and improving its applicability in more fields. Summary of the Invention

[0004] A single-channel air charging and discharging airbag vibration isolation device of the present invention aims to solve the problems of high cost of existing airbag control systems and difficulty in promoting them in the civilian market. Through an innovative single-channel design, the number of air charging and discharging control units, displacement sensors, etc. is reduced, the system cost and complexity are reduced, and the reliability of the equipment is improved. At the same time, it realizes automatic adjustment of the attitude of the airbag and the vibration isolation device to adapt to different working conditions and is convenient for on-site implementation.

[0005] The single-channel air charging and discharging airbag vibration isolation device includes: an airbag, a single-channel air charging and discharging control unit, a displacement sensor, an anti-leakage pipeline system, and an airbag installation and adjustment surface.

[0006] Airbag: The airbag includes an airbag body and an airbag control system. The airbag control system is used to monitor the airbag pressure and feedback the airbag pressure to the single-channel air charging and discharging control unit. Multiple airbags are connected in series through the anti-leakage pipeline system to form a whole and jointly undertake the vibration isolation task.

[0007] Single-channel air charging and discharging control unit: One set of integrated pneumatic valve group is used as the single-channel air charging and discharging control unit to replace the traditional multi-channel independent air charging and discharging control units, and is connected to all airbags through the anti-leakage pipeline system. The typical configuration of airbags is 8, and it can also be expanded to n, forming a series air path topology. By setting a single-channel air charging and discharging control unit, the airbag is inflated and deflated.

[0008] Displacement sensor: A displacement sensor is arranged in the center of gravity area of the single-channel air charging and discharging airbag vibration isolation device to monitor the overall attitude change of the device in real time.

[0009] Airbag installation adjustment surface: An airbag installation adjustment surface (including fine-tuning bolts and slide rails) is provided on the airbag installation base. During construction, the airbag installation adjustment surface is mechanically adjusted to ensure that the initial load deviation of each airbag is ≤10%.

[0010] Leak-proof pipeline system: All-welded steel pipes and threadless tee joints are used to eliminate the risk of air leakage in a long-term vibration environment. The airbag and the single-channel inflation and deflation control unit are connected by the leak-proof pipeline system.

[0011] The working principle of the single-channel inflation and deflation airbag vibration isolation device:

[0012] Based on single-channel inflation and deflation design and precise monitoring and control of the airbag pressure and the displacement of the vibration isolation device. The airbag control system feeds back the airbag pressure to the single-channel inflation and deflation control unit. When the displacement sensor detects a change in the attitude of the vibration isolation device, it sends displacement information to the single-channel inflation and deflation control unit. The single-channel inflation and deflation control unit judges whether the airbag needs to be inflated or deflated according to the information fed back by the airbag pressure and the displacement sensor, and performs corresponding inflation and deflation operations on the airbag through the leak-proof pipeline system to adjust the attitude of the vibration isolation device, adapt to different working condition loads, and realize the functions of automatically supplementing the airbag and automatically measuring the displacement.

[0013] The working process of the single-channel inflation and deflation airbag vibration isolation device is divided into two stages: load equalization initialization and dynamic adjustment:

[0014] (1) Load equalization initialization stage

[0015] Inflation to increase stiffness: The single-channel inflation and deflation control unit inflates a series of airbags through the leak-proof pipeline system according to the preset vibration isolation requirements. The airbag body gradually expands under the action of inflation, and the stiffness of the entire vibration isolation device increases, thus laying a foundation for adapting to the initial working condition load. This process utilizes the compressibility of the gas to change the elastic characteristics of the airbag to meet the requirements for the stiffness of the vibration isolation device under different working conditions.

[0016] Adjust pressure balance: The vibration isolation device is mechanically adjusted by means of the airbag installation adjustment surface (including fine-tuning bolts and slide rails). Construction workers operate the fine-tuning bolts to move the position of the airbag on the slide rail to make the static pressure of each airbag balanced. This operation effectively eliminates the deviation of the foundation attitude and ensures that the load deviation borne by each airbag in the initial stage is controlled within the range of ≤10%, ensuring the stability and reliability of the vibration isolation device in the initial state.

[0017] (2) Dynamic adjustment stage

[0018] Initial state preparation: Before the vibration isolation device is started, all airbags are pre-filled with a set initial pressure. At this time, the airbags are in a standby state and have a certain elastic support capacity. At the same time, the displacement sensor is in a standby state, but its internal circuit and sensing elements have completed the initialization configuration and are ready to monitor the attitude change of the vibration isolation device at any time.

[0019] Monitoring and adjustment: During the operation of the vibration isolation device, the displacement sensor monitors the attitude change of the vibration isolation device in real time at a high frequency. Once the attitude of the vibration isolation device changes, it immediately sends displacement information to the single-channel air charging and discharging control unit. At the same time, the airbag control system continuously feeds back the airbag pressure information to the single-channel air charging and discharging control unit. After receiving the airbag pressure information and the information fed back by the displacement sensor, the single-channel air charging and discharging control unit quickly performs data processing and analysis, and judges whether the airbag needs to be inflated or deflated according to the preset control algorithm and threshold. If adjustment is needed, the single-channel air charging and discharging control unit performs precise air charging and discharging operations on the corresponding airbag through the leak-proof pipeline system. For example, when it is detected that the vibration isolation device tilts to one side, the single-channel air charging and discharging control unit will inflate the airbag at the lower position to increase its supporting force, and at the same time appropriately deflate the airbag at the higher position, so as to adjust the attitude of the vibration isolation device and ensure that it always remains stable.

[0020] Continuous monitoring and stable operation: After the fine adjustment of the airbag inflation and deflation is completed, the displacement sensor continues to monitor the attitude of the vibration isolation device in real time. If the attitude returns to the normal range, the single-channel air charging and discharging control unit maintains the current airbag pressure state; if the attitude still does not reach the ideal state, the above monitoring and adjustment operations are continued to form a dynamic closed-loop control process. In this way, it is ensured that the vibration isolation device always maintains a stable attitude under different working condition loads, effectively plays the vibration isolation function, and provides a stable operating environment for the equipment.

[0021] Fault warning: If abnormal data is detected, such as sudden change in airbag pressure or excessive attitude deviation of the vibration isolation device, the single-channel air charging and discharging control unit will trigger the fault warning mechanism to remind the operator to check and maintain.

[0022] Beneficial effects

[0023] (1) Significantly reduced cost

[0024] The present invention adopts a single-channel design, connects the airbag charging pipelines in series, and only sets 1 single-channel air charging and discharging control unit and 1 displacement sensor. Figure 2 Compared with Figure 1In comparison, the number of charge and discharge control units of the present invention is 1 / 8 of that of the prior art, and the number of displacement sensors is 1 / 4 of that of the prior art. The reduction in the number of hardware directly reduces the costs of raw material procurement, production manufacturing, and later maintenance, making the product more competitive in price in the civilian market and promoting the wide application of the airbag vibration isolation technology in cost-sensitive fields such as civilian ships and ordinary industrial equipment.

[0025] (2) System performance improvement

[0026] High reliability: The present invention simplifies the system structure, reduces a large number of potential fault points, and reduces the system complexity. The leak-proof pipeline system adopts all-welded steel pipes and threadless tee joints, effectively avoiding air leakage problems under long-term vibration environments, enhancing the system tightness and stability, ensuring the long-term stable operation of the equipment, reducing the number of shutdowns and maintenance costs caused by faults.

[0027] Precise vibration isolation: The single-channel charge and discharge control unit of the present invention combines the feedback of airbag pressure and displacement sensors to precisely control the airbag charge and discharge. Under different working conditions, such as changes in load and speed during ship navigation, or changes in the operating state of industrial equipment, it can quickly adjust the attitude of the vibration isolation device to ensure the stability of the equipment, reduce the damage to the equipment caused by vibration, extend the service life of the equipment, and improve the operating accuracy and efficiency of the equipment.

[0028] (3) Convenient on-site implementation

[0029] The present invention sets an airbag installation and adjustment surface on the airbag installation base, equipped with fine-tuning bolts and slide rails. Construction personnel can conveniently adjust the position of the airbag on-site to ensure that the initial load deviation of each airbag is ≤10%. The operation is simple, reducing the installation difficulty, improving the installation efficiency, reducing the on-site installation time and labor costs, and enabling the device to be quickly put into use.

[0030] (4) Function expansion and improvement

[0031] The present invention has the function of automatically adjusting the attitude of the airbag and the vibration isolation device, adapting to various complex working conditions and broadening the application scenarios. At the same time, a fault warning mechanism is set. When abnormal data such as sudden changes in airbag pressure and excessive attitude deviation of the vibration isolation device are monitored, the operator is timely reminded to check and maintain, realizing early fault diagnosis, avoiding the occurrence of serious faults, and ensuring the safe and stable operation of the equipment. Description of the drawings

[0032] Figure 1 It is a schematic diagram of the composition of the present invention

[0033] Figure 2 It is a schematic diagram of the composition of the prior art

[0034] Figure 3 It is a layout schematic diagram of the airbag installation and adjustment surface in the present invention

[0035] Reference numerals: airbag - 1, single - channel inflation and deflation control unit - 2, displacement sensor - 3, leak - proof pipeline system - 4, airbag installation and adjustment surface - 5 Detailed implementation manners

[0037] The single - channel inflation and deflation airbag vibration isolation device of the present invention has broad application prospects in fields such as ships. The following will elaborate on its detailed implementation manners in combination with specific embodiments.

[0038] Embodiment 1: Vibration isolation application of ship engines

[0039] The composition of the single - channel inflation and deflation airbag vibration isolation device includes the following components:

[0040] Airbag 1: Eight airbags 1 meeting the vibration isolation requirements of ship engines are selected. The body of the airbag 1 is made of high - strength and aging - resistant rubber material. The airbag control system integrates a pressure sensor, which can accurately monitor the airbag pressure. The eight airbags 1 are connected in series through the leak - proof pipeline system 4 to jointly support the ship engine and undertake the vibration isolation task.

[0041] Single - channel inflation and deflation control unit 2: An advanced integrated pneumatic valve group is used as the single - channel inflation and deflation control unit 2. The single - channel inflation and deflation control unit 2 has high - precision flow control and pressure regulation functions, and is connected to the eight airbags through the leak - proof pipeline system 4 to realize the inflation and deflation operations of all airbags 1.

[0042] Displacement sensor 3: In the centroid area of the vibration isolation device, a highly sensitive displacement sensor 3 is installed, which can real - time and accurately monitor the overall attitude change of the vibration isolation device, and can detect a displacement change as small as 0.1 mm.

[0043] Leak - proof pipeline system 4: The leak - proof pipeline system 4 is constructed using fully welded steel pipes and non - threaded three - way joints. The material of the steel pipe is stainless steel, which has good corrosion resistance and compressive resistance, ensuring long - term stable operation in the complex vibration environment of ships and effectively eliminating the risk of air leakage.

[0044] Airbag installation and adjustment surface 5: An airbag installation and adjustment surface 5 is set on the airbag installation base, equipped with fine - tuning bolts and slide rails. The accuracy of the fine - tuning bolts can reach 0.01 mm. Construction personnel can accurately move the position of the airbag 1 on the slide rail by operating the fine - tuning bolts to ensure that the initial load deviation of each airbag 1 ≤ 10%.

[0045] The working process of the single - channel inflation and deflation airbag vibration isolation device:

[0046] Uniform load initialization stage: When installing the vibration isolation device on the ship engine, the single-channel charging and discharging control unit 2 inflates the 8 series-connected air bags 1 through the anti-leakage pipeline system 4 according to the preset vibration isolation requirements. As the air bag body gradually expands, the stiffness of the vibration isolation device increases to adapt to the initial working condition load of the engine. The construction personnel use the air bag installation adjustment surface 5 to operate the fine-tuning bolts and move the position of the air bag 1 on the slide rail to make the static pressure of each air bag 1 balanced, eliminate the foundation attitude deviation, and ensure the stability and reliability of the vibration isolation device in the initial state.

[0047] Dynamic adjustment stage: Before the ship engine starts, all the air bags 1 are pre-inflated with the set initial pressure, and the displacement sensor 3 completes the initialization configuration of the internal circuit and sensing elements and enters the standby state. During the operation of the engine, the displacement sensor 3 monitors the attitude change of the vibration isolation device in real time at a frequency of 10 times per second. Once the attitude changes, the displacement sensor 3 immediately sends the displacement information to the single-channel charging and discharging control unit 2, and at the same time the air bag control system continuously feeds back the air bag pressure information. After receiving the information, the single-channel charging and discharging control unit 2 quickly performs data processing and analysis. For example, when the ship accelerates and the engine vibration intensifies, and the vibration isolation device tilts to one side, the single-channel charging and discharging control unit 2 judges according to the preset control algorithm and threshold that it is necessary to inflate the air bag 1 at the lower position and deflate the air bag 1 at the higher position appropriately, and performs precise charging and discharging operations on the corresponding air bag 1 through the anti-leakage pipeline system 4 to adjust the attitude of the vibration isolation device to ensure that it always remains stable. After the fine adjustment of the charging and discharging of the air bag 1 is completed, the displacement sensor 3 continues to monitor the attitude of the vibration isolation device in real time. If the attitude returns to the normal range, the single-channel charging and discharging control unit 2 maintains the current pressure state of the air bag 1; if the attitude still does not reach the ideal state, the monitoring and adjustment operations are continued to form a dynamic closed-loop control process. In addition, if abnormal data such as sudden change of air bag pressure or excessive attitude deviation of the vibration isolation device is detected, the single-channel charging and discharging control unit 2 will trigger a fault warning mechanism to remind the operator to check and maintain.

[0048] Embodiment 2: Vibration isolation application of ship generator set

[0049] The system composition of the single-channel charging and discharging air bag vibration isolation device includes the following components:

[0050] Air bag 1: According to the weight and vibration characteristics of the ship generator set, 10 air bags 1 are selected. The design of the air bag body and the air bag control system is similar to that of Embodiment 1, but the size and load-bearing capacity are optimized to meet the special requirements of the generator set. The 10 air bags 1 are connected in series through the anti-leakage pipeline system 4 to jointly provide vibration isolation support for the generator set.

[0051] Single-channel charging and discharging control unit 2: A set of integrated pneumatic valve group is also used as the single-channel charging and discharging control unit 2, which is connected to 10 airbags 1 through a leak-proof pipeline system 4 to achieve the charging and discharging control of all airbags 1. The single-channel charging and discharging control unit 2 optimizes the control logic according to the working conditions of the generator set, improving the response speed.

[0052] Displacement sensor 3: A high-precision displacement sensor 3 is installed in the center-of-gravity area of the vibration isolation device, and its performance is equivalent to that of the displacement sensor 3 in Embodiment 1, which can accurately monitor the attitude change of the vibration isolation device.

[0053] Leak-proof pipeline system 4: The design of all-welded steel pipes and non-threaded tee joints is adopted to ensure the sealing and stability of the pipeline system and adapt to the vibration environment during the operation of the generator set.

[0054] Airbag installation adjustment surface 5: An airbag installation adjustment surface 5 is set on the installation base of the airbag 1, equipped with high-precision fine-tuning bolts and slide rails. Construction personnel can accurately adjust the position of the airbag 1 by operating the fine-tuning bolts to ensure that the initial load deviation of each airbag 1 is within the specified range.

[0055] The working process of the single-channel charging and discharging airbag vibration isolation device:

[0056] Uniform load initialization stage: When installing the vibration isolation device on the generator set, the single-channel charging and discharging control unit 2 inflates 10 series-connected airbags 1 according to the preset vibration isolation requirements, so that the airbags 1 expand to increase the stiffness of the vibration isolation device and adapt to the initial working condition load of the generator set. Construction personnel use the airbag installation adjustment surface 5 to move the airbag on the slide rail through the fine-tuning bolt to make the static pressure of each airbag 1 balanced and eliminate the foundation attitude deviation.

[0057] Dynamic adjustment stage: Before the generator set starts, the airbag 1 is filled with the initial pressure, and the displacement sensor 3 completes the initialization and enters the standby state. When the generator set is running, the displacement sensor 3 monitors the attitude change of the vibration isolation device in real time. Once there is a change, it immediately sends the displacement information to the single-channel charging and discharging control unit 2, and at the same time the airbag control system feeds back the airbag pressure information. The single-channel charging and discharging control unit 2 processes and analyzes this information. For example, when the load change of the generator set causes the vibration to change and the attitude of the vibration isolation device appears deviated, the single-channel charging and discharging control unit 2 performs the charging and discharging operation on the corresponding airbag 1 through the leak-proof pipeline system 4 according to the preset algorithm and threshold to adjust the attitude of the vibration isolation device. After the fine adjustment, the displacement sensor 3 continuously monitors the attitude. If the attitude is normal, the pressure of the airbag 1 is maintained; if it is abnormal, the adjustment continues to form a closed-loop control. When abnormal situations such as sudden change of the airbag 1 pressure or excessive deviation of the attitude of the vibration isolation device occur, the single-channel charging and discharging control unit 2 will trigger a fault warning mechanism to notify the operator for maintenance.

[0058] Two embodiments of the single-channel inflatable and deflatable airbag vibration isolation device of the present invention highlight its practical value and technological leadership in the ship field:

[0059] Universally effective: Both embodiments adopt designs such as single-channel inflatable and deflatable, airbag series connection, and leak-proof pipeline system. By reducing the number of inflatable and deflatable control units and sensors, the cost and complexity are reduced, and good applicability and effectiveness are shown in the vibration isolation of ship engines and generator sets.

[0060] Precise regulation to ensure performance: Relying on the displacement sensor and airbag pressure monitoring feedback, the single-channel inflatable and deflatable control unit realizes precise inflatable and deflatable regulation. Whether the engine working condition changes or the generator set load fluctuates, it can quickly adjust the attitude of the vibration isolation device to ensure the stable operation of the equipment and improve the vibration isolation performance.

[0061] Convenient implementation and reliable operation: The airbag installation and adjustment surface cooperate with fine-tuning bolts and slide rails, which is convenient for on-site installation and debugging; the leak-proof pipeline system and fault warning mechanism enhance the system tightness and reliability, reduce the maintenance frequency, and reduce the operation risk.

Claims

1. A single-channel inflatable and deflatable airbag vibration isolation device: characterized in that, It includes an airbag (1), a single-channel inflation and deflation control unit (2), a displacement sensor (3), a leak-proof pipeline system (4), and an airbag installation and adjustment surface (5); the airbag (1) includes an airbag body and an airbag control system, and multiple airbags (1) are connected in series through the leak-proof pipeline system (4), and the airbag control system is used to monitor the airbag pressure and feedback the airbag pressure to the single-channel inflation and deflation control unit (2); the single-channel inflation and deflation control unit (2) adopts a set of integrated pneumatic valve group, connects all the airbags (1) through the leak-proof pipeline system (4), and performs inflation and deflation operations on the airbags (1); the displacement sensor (3) is arranged in the center of gravity area of the single-channel inflation and deflation airbag vibration isolation device to monitor the overall attitude change in real time; the airbag installation and adjustment surface (5) is arranged on the airbag installation base, including fine-tuning bolts and slide rails, to ensure that the initial load deviation of each airbag (1) is ≤10%; the leak-proof pipeline system (4) adopts all-welded steel pipes and threadless three-way joints to connect the airbag (1) and the single-channel inflation and deflation control unit (2) to eliminate the air leakage risk under the long-term vibration environment.

2. The single-channel inflatable and deflatable airbag vibration isolation device according to claim 1, characterized in that, The typical configuration number of the airbag (1) is 8, and it can also be expanded to n.

3. The single-channel inflation and deflation airbag vibration isolation device according to claim 1, characterized in that The single-channel inflation and deflation control unit (2) judges whether the airbag (1) needs to be inflated or deflated according to the information fed back by the airbag pressure and the displacement sensor (3), and controls the inflation and deflation of the airbag (1) to adjust the attitude of the vibration isolation device to adapt to different working condition loads.

4. The single-channel inflation and deflation airbag vibration isolation device according to claim 1, characterized in that, The working process of the single-channel inflation and deflation airbag vibration isolation device includes a load equalization initialization stage and a dynamic adjustment stage.

5. The single-channel inflatable and deflatable airbag vibration isolation device according to claim 4, wherein: The load equalization initialization stage includes the single-channel inflation and deflation control unit (2) inflating the airbag (1) to increase the stiffness of the vibration isolation device, and making the static pressure of each airbag (1) balanced by means of the airbag installation and adjustment surface (5).

6. The single-channel inflation and deflation airbag vibration isolation device according to claim 4, wherein The dynamic adjustment stage includes: Initial state preparation: Before the vibration isolation device starts, all the airbags (1) are pre-inflated with a set initial pressure, and the displacement sensor (3) completes the initialization configuration of the internal circuit and sensing elements and enters the standby state; Monitoring and adjustment: The displacement sensor (3) monitors the attitude change of the vibration isolation device in real time at a set sampling frequency. When the attitude change is detected, it immediately sends displacement information to the single-channel inflation and deflation control unit (2). At the same time, the airbag control system continuously feeds back the airbag pressure information to the single-channel inflation and deflation control unit (2). After receiving the above information, the single-channel inflation and deflation control unit (2) judges that the airbag (1) needs to be inflated or deflated based on the preset control algorithm and threshold, and performs precise inflation and deflation on the corresponding airbag (1) through the leak-proof pipeline system (4) to adjust the attitude of the vibration isolation device; Continuous monitoring and stable operation: After the fine adjustment of the inflation and deflation of the airbag (1) is completed, the displacement sensor (3) continuously and real-time monitors the attitude of the vibration isolation device. If the attitude returns to the normal range, the single-channel inflation and deflation control unit (2) maintains the current pressure state of the airbag (1). If the attitude still does not reach the ideal state, the above monitoring and adjustment process is repeated to form a closed-loop dynamic control, ensuring that the vibration isolation device always maintains a stable attitude under different working condition loads.

7. The single-channel inflatable and deflatable airbag vibration isolation device according to claim 6, wherein: If during the monitoring process, the single-channel inflation and deflation control unit (2) monitors abnormal data such as sudden changes in airbag pressure or excessive attitude deviation of the vibration isolation device, a fault warning mechanism will be triggered.

8. The single-channel inflation and deflation airbag vibration isolation device according to claim 1, characterized in that The displacement sensor (3) can minimally detect a displacement change of 0.1 mm.

9. The single-channel inflatable and deflatable airbag vibration isolation device according to claim 1, wherein: The precision of the fine adjustment bolts on the airbag installation and adjustment surface (5) can reach 0.01 mm.

10. The single-channel inflatable and deflatable airbag vibration isolation device according to claim 1, characterized in that, The steel pipe of the leak-proof pipeline system (4) is made of stainless steel, with good corrosion resistance and compressive resistance.

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