Installation method of large vibration isolation device and airbag shock absorber inflation system

Abstract

This invention proposes an installation method for a large vibration isolation device and an airbag damper inflation system. The method involves adjusting the installation position of the large vibration isolator using a support device, marking and positioning the airbag damper, limiter, and displacement sensor on the large vibration isolation device, and then drilling holes in them. After drilling, the corresponding devices are released, and the support device is adjusted to control the height difference on the upper surface of the large vibration isolation device. Adjustment shims are made according to the working height of the airbag damper and the large vibration isolation device. Inflation pipelines and adapter cables are installed, and power is connected for testing. This invention solves the technical problems in installing large vibration isolation devices and airbag damper inflation systems. This invention ensures the vibration isolation effect of the device, effectively suppressing the transmission of vibrations from major noise source equipment; improves installation accuracy, ensuring the final installation posture and external interface requirements of the equipment; guarantees the impact resistance of the vibration isolation device; and is simple and convenient to operate, making it suitable for application as an installation method for large vibration isolation devices and airbag damper inflation systems in ships.

Description

Technical Field

[0001] This invention relates to the field of ship vibration reduction and noise reduction, specifically to the installation method of large vibration isolation devices and airbag vibration damper inflation system. Background Technology

[0002] With the development of shipbuilding technology, the requirements for vibration and noise indicators are becoming increasingly stringent. Vibration isolation devices, as an important measure to suppress the transmission of equipment vibration, directly affect the vibration transmission and shock resistance of the equipment through their installation posture and precision. To reduce the transmission of equipment vibration, vibration isolation devices are becoming increasingly larger and more integrated. Vibration dampers are also evolving from rubber dampers to large airbag dampers with their inflation systems. This has led to problems such as high requirements for the positioning and installation precision of vibration isolation devices, and the complex and diverse piping, components, and accessories of airbag dampers and their inflation systems, resulting in complicated and cumbersome installations. These issues seriously restrict the quality and progress of shipbuilding.

[0003] Therefore, there is an urgent need to develop an accurate, efficient, and highly operable method for installing large-scale vibration isolation devices and airbag inflation systems, so as to ensure low-noise installation of integrated equipment and reduce the radiated noise of ships. Summary of the Invention

[0004] To improve the low-noise installation quality of integrated shipboard equipment, ensure its impact resistance, and achieve automatic attitude control of large vibration isolation devices, this invention proposes an installation method for large vibration isolation devices and airbag damper inflation systems. This method adjusts the installation position of the large vibration isolator using a support device. First, the airbag damper, limiter, and displacement sensor are marked and positioned on the large vibration isolation device, and holes are drilled. After drilling, the corresponding devices are released, and the support device is adjusted to control the height difference of the upper surface of the large vibration isolation device. Then, adjustment shims are made according to the working height of the airbag damper and the large vibration isolation device. The air source components and adapter cables are installed, and power is connected for testing, thus solving the technical problems of installing large vibration isolation devices and airbag damper inflation systems.

[0005] The solution adopted by this invention to solve the technical problem is: a method for installing a large vibration isolation device and an airbag shock absorber inflation system, which is achieved through the following steps:

[0006] 1) Install support devices to support large vibration isolation devices and adjust the installation position of large vibration isolation devices;

[0007] 2) Fix the airbag shock absorber, limiter and displacement sensor on the large vibration isolation device. According to the positioning size requirements, fine-tune and check the position of the large vibration isolation device. After the positioning check is qualified, mark the position of the mounting holes of the airbag shock absorber, limiter and displacement sensor.

[0008] 3) Drill mounting holes for the base according to the mounting hole positions of the airbag shock absorber, limiter, and displacement sensor on the bottom plate. After installing the bottom plate of the airbag shock absorber and limiter on the base, loosen the fixed connection between the airbag shock absorber, limiter, and large vibration isolation device. Adjust the support device and measure the plane of the upper surface of the large vibration isolation device to ensure that the height difference of the upper surface of the large vibration isolation device is controlled within 1.2mm.

[0009] 4) Based on the working height H0 of the airbag shock absorber and the measured distance H1 from the base to the large vibration isolation device, determine the thickness (H1-H0) of the airbag shock absorber adjustment shim and make the adjustment shim.

[0010] 5) Measure the actual dimension between the lower surface of the large vibration isolation device and the base as L1 and the height dimension of the limiter as L2, and determine the thickness of the limiter adjusting shim (L1-L2); fix the airbag shock absorber and airbag shock absorber adjusting shim, limiter and limiter adjusting shim on the large vibration isolation device.

[0011] 6) Connect and install the upper surface of the displacement sensor to the large vibration isolation device, and lock it in place, ensuring the height of the displacement sensor is 200mm ± 0.2mm.

[0012] 7) Connect and lock the inflation control components, controller unit and large vibration isolation device. The installed air source components must not be tilted.

[0013] 8) Fix the pipe support mounting plate of the inflation pipeline and accessories to the large vibration isolation device according to the drilled holes, and fix the inflation pipeline and accessories to the pipe support in sequence, connect the filter, valve, nitrogen cylinder, and finally connect to the air system on the ship to form a closed-loop inflation pipeline system.

[0014] 9) Fix the cable clamp mounting plate onto the large vibration isolation device, and fix cables of different diameters onto the corresponding cable clamps; connect the electrical connector plug at the front end of the cable to the corresponding component, and simultaneously connect the corresponding cable to the controller unit. The installed cables must be neatly arranged and free of looseness.

[0015] 10) Connect the power supply cable to the 24V DC power supply cable on the ship and the electrical connector marked "Power" on the controller unit.

[0016] 11) Connect the power supply and inflate the airbag shock absorber through the intelligent control device. After inflation, close the air valve and maintain the pressure for a certain period of time. When the pressure drop is not lower than the index requirement, it means that the air tightness check is qualified and the inflation pipeline system is installed.

[0017] Positive effects

[0018] 1. The method described in this invention is used to install large-scale vibration isolation devices and airbag shock absorber inflation systems, which can ensure the achievement of the vibration isolation effect index of the vibration isolation device and effectively suppress the transmission of vibration of the main noise source equipment.

[0019] 2. The installation method described in this invention improves the low-noise installation accuracy of airbag shock absorbers and large vibration isolation devices, ensuring the final installation posture and external interface requirements of the equipment;

[0020] 3. The installation method described in this invention ensures the installation requirements of the airbag and its auxiliary systems, provides a basis for achieving attitude control of large vibration isolation devices, and ensures the impact resistance performance of the vibration isolation devices;

[0021] The method described in this invention has a wide range of applications, is simple and convenient to operate, and does not require repeated debugging and verification. It is suitable for use as an installation method for large ship vibration isolation devices and airbag shock absorber inflation systems. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the planar layout of the present invention;

[0023] Figure 2 A schematic diagram of the airbag shock absorber installation;

[0024] Figure 3 A schematic diagram of the limit switch installation;

[0025] Figure 4 Head view of the airbag inflation system;

[0026] Figure 5 Side view of the airbag inflation system in operation.

[0027] In the diagram: 1. Support device; 2. Airbag shock absorber; 3. Limiter; 4. Large vibration isolation device; 5. Airbag shock absorber adjusting shim; 6. Limiter adjusting shim; 7. Displacement sensor; 8. Inflation control assembly; 9. Controller unit; 10. Inflation pipeline and accessories; 11. Cable; H1. Measured distance from the base to the large vibration isolation device; H0. Working height of the airbag shock absorber; L1. Measured distance from the large vibration isolation device to the base; L2. Limiter height. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] In this invention, all embodiments, implementation methods, and features can be combined with each other without contradiction or conflict. In this invention, conventional equipment, devices, and components can be commercially available or self-made according to the disclosure of this invention. In this invention, to highlight the key points, some conventional operations and equipment, devices, and components are omitted or only briefly described.

[0031] See Figures 1 to 3 ,

[0032] (1) Inspection of the mounting surface of airbag shock absorber 2:

[0033] Check that the flatness of the mounting surface of a single vibration damper is ≤0.2mm, the flatness of the plane comprising the mounting surfaces of vibration dampers is ≤1mm, and the surface roughness of the mounting surface of the vibration damper is ≤6.3μm.

[0034] (2) Installation of the lower support device of the large vibration isolation device 4:

[0035] Six support devices 1 are used to support the large vibration isolation device 4, which is used to adjust the installation position of the large vibration isolation device 4.

[0036] (3) Installation of airbag shock absorber 2 and limiter 3:

[0037] 3.1) Fix the airbag shock absorber 2, limiter 3, and displacement sensor 7 onto the large vibration isolation device 4. Fine-tune and check the position of the large vibration isolation device 4 according to the positioning size requirements. After the positioning check is qualified, mark the positions of the mounting holes of the airbag shock absorber 2, limiter 3, and displacement sensor 7.

[0038] 3.2) Drill mounting holes for the base according to the mounting hole positions of the airbag shock absorber 2, limiter 3 and displacement sensor 7 on the bottom plate.

[0039] 3.3) After installing the bottom plate of the airbag shock absorber 2 and the limiter 3 on the base, loosen the fixed connection between the airbag shock absorber 2, the limiter 3 and the large vibration isolation device 4, adjust the support device 1 and measure the plane of the upper surface of the large vibration isolation device 4, so that the height difference of the upper surface of the large vibration isolation device 4 is controlled within 1.2mm.

[0040] 3.4) Based on the working height H0 (H0=200mm) of the airbag shock absorber 2 and the measured distance H1 from the base to the large vibration isolation device 4, determine the thickness (H1-H0) of the airbag shock absorber adjusting shim 5 and manufacture the airbag shock absorber adjusting shim 5.

[0041] 3.5) Measure the actual dimension between the lower surface of the large vibration isolation device 4 and the base as L1 and the height dimension of the limiter as L2, and determine the thickness (L1-L2) of the limiter adjusting shim 6.

[0042] 3.6) Fix the airbag shock absorber 2 and airbag shock absorber adjusting shim 5, limiter 3 and limiter adjusting shim 6 to the large vibration isolation device 4.

[0043] (4) Installation of the airbag inflation system:

[0044] 4.1) Installation of displacement sensor 7: Connect and install the upper surface of displacement sensor 7 to the large vibration isolation device 4, and lock it in place, so that the height of displacement sensor 7 is 200mm ± 0.2mm.

[0045] 4.2) Installation of inflation control components 8: Connect and lock the four sets of inflation control components 8 to the large vibration isolation device 4 with bolts. The inflation control components 8 shall not be tilted after installation.

[0046] 4.3) Installation of controller unit 9: Connect and lock the controller unit 9 to the large vibration isolation device 4 with hexagonal head bolts and spring washers. The controller unit 9 shall not be tilted after installation.

[0047] 4.4) Installation of inflation piping and accessories 10:

[0048] 4.41) Use countersunk screws to fix the pipe clamp mounting plate to the large vibration isolation device 4 according to the drilled holes. The pipe clamp distance is generally 1000mm.

[0049] 4.42) Place the lower part of the pipe clamp into the round boss of the pipe clamp mounting plate.

[0050] 4.43) Place the air inflator and accessories 10 in the lower semicircle of the tube clamp. The air inflator should be arranged neatly. Then align the upper part of the tube clamp with the lower part of the tube clamp and tighten it with bolts so that the air inflator is properly clamped in the round hole of the tube clamp.

[0051] 4.44) Install all piping accessories from the high-pressure air interface on the ship to the air source assembly, in the following order: high-pressure filter, high-pressure pressure reducing valve, pre-filter, precision filter, air supply shut-off valve, nitrogen cylinder, cylinder pressure gauge, cylinder pressure gauge valve, air supply shut-off valve, medium-pressure pressure reducing valve, air supply pressure gauge, and air supply pressure gauge valve.

[0052] 5) Cable 11 installation:

[0053] 5.1) Use hexagon countersunk screws (for 1-strand wire clips) and bolts (for 2-strand, 3-strand, and 4-strand wire clips) to fix the wire clip mounting plate onto the large vibration isolation device 4.

[0054] 5.2) Place the lower part of the wire clip corresponding to the diameter of different cables 11 into the round boss of the wire clip mounting plate.

[0055] 5.3) Arrange the cable 11 wires in the lower semicircle of the cable clamp. The cable 11 wires should be arranged neatly. Then align the upper part of the cable clamp with the lower part of the cable clamp and lock it with hexagonal head bolts and spring washers, but do not overtighten. Gently pull the cable by hand until it cannot be pulled out, so that the cable 11 wires are properly locked in the round hole of the cable clamp. The cable 11 should have a permanent number.

[0056] 5.4) Match the numbers on the connector plugs at the front end of cable 11 with the numbers on each component, and plug in each cable 11.

[0057] 5.5) Connect the plug of the electrical connector at the front end of cable 11 to the number of the electrical connector socket at the bottom of the controller unit 9, and connect each cable 11.

[0058] 5.6) Installation of power supply cable 11.

[0059] 5.7) Install an electrical connector plug on the front end of the 24V DC power supply cable 11 on the ship.

[0060] 5.8) Connect the power cable 11 to the electrical connector socket labeled "Power" on the controller unit 9.

[0061] 6) Air tightness check of the airbag inflation system:

[0062] 6.1) After all equipment and systems are installed on the large vibration isolation device 4, start checking the air tightness of the airbag inflation system.

[0063] 6.2) Connect the power supply and inflate the eight airbag shock absorbers 2 through the intelligent control device to bring the large vibration isolation device 4 to normal operation. Close the air valve and maintain the pressure for 24 hours. Check for leaks at all air pipe joints. The system pressure drop should not exceed 2% to be considered qualified.

[0064] 7) This completes the installation of the large vibration isolation device 4 and the airbag shock absorber 2 inflation system.

[0065] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for installing a large vibration isolation device and an airbag shock absorber inflation system, characterized in that, This can be achieved through the following steps: 1) Install support device (1) to support large vibration isolation device (4) and adjust the installation position of large vibration isolation device (4); 2) Fix the airbag shock absorber (2), limiter (3) and displacement sensor (7) on the large vibration isolation device (4). According to the positioning size requirements, fine-tune and check the position of the large vibration isolation device (4). After the positioning check is qualified, mark the position of the mounting holes of the airbag shock absorber (2), limiter (3) and displacement sensor (7). 3) Drill mounting holes for the base according to the mounting hole positions of the bottom plate of the airbag shock absorber (2), limiter (3) and displacement sensor (7); after installing the bottom plate of the airbag shock absorber (2) and limiter (3) on the base, loosen the fixed connection between the airbag shock absorber (2) and limiter (3) and the large vibration isolation device (4), adjust the support device (1) and measure the plane of the upper surface of the large vibration isolation device (4) so ​​that the height difference of the upper surface of the large vibration isolation device (4) is controlled within 1.2mm; 4) Based on the working height H0 of the airbag shock absorber (2) and the measured distance H1 from the base to the large vibration isolation device (4), determine the thickness H1-H0 of the airbag shock absorber adjustment shim (5) and make the airbag shock absorber adjustment shim (5). 5) Measure the actual dimensions between the lower surface of the large vibration isolation device (4) and the base as L1 and the height dimension of the limiter as L2, and determine the thickness L1-L2 of the limiter adjustment shim (6); fix the airbag damper (2) and airbag damper adjustment shim (5), limiter (3) and limiter adjustment shim (6) on the large vibration isolation device (4); 6) Connect and install the upper surface of the displacement sensor (7) to the large vibration isolation device (4) and lock it in place so that the height of the displacement sensor (7) is 200mm ± 0.2mm; 7) Connect and lock the inflation control assembly (8), controller unit (9) to the large vibration isolation device (4). The air source assembly must not be tilted after installation. 8) Fix the pipe support mounting plate of the inflation pipe and accessories (10) to the large vibration isolation device (4) according to the drilled holes, and fix the inflation pipe and accessories (10) on the pipe support in sequence, connect the filter, valve, nitrogen cylinder, and finally connect to the air system on the ship to form a closed-loop inflation pipe system. 9) Fix the cable clamp mounting plate on the large vibration isolation device (4), and fix cables (11) of different diameters on the corresponding cable clamps; connect the electrical connector plug at the front end of the cable (11) to the corresponding component, and connect the corresponding cable (11) to the controller unit (9); the installed cable (11) must be neatly arranged and must not be loose. 10) Connect the power supply cable (11) to the 24V DC power supply cable (11) on the ship and the electrical connector marked "Power" on the controller unit (9); 11) Connect the power supply and inflate the airbag shock absorber (2) through the intelligent control device. After inflation, close the air valve and maintain the pressure for a certain period of time. When the pressure drop is not lower than the index requirement, it means that the air tightness check is qualified and the inflation pipeline system is installed. Among them, the air valve is closed and the pressure is maintained for 24 hours. Check whether there is any leakage at each air pipe joint. The system pressure drop is not greater than 2% to be qualified.

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