A method for measuring the load uniformity of a shock absorber

Abstract

The application provides a method for measuring load uniformity of a shock absorber in the field of ships. The hydraulic leveling device with a hydraulic leveling device assembly is used, and the hydraulic leveling device assembly comprises a pressure sensor, a hydraulic pressure sensor interface, a hydraulic device and a shock absorber fastening support. The method comprises the following steps: placing the electromechanical equipment and the shock absorber on a horizontal plane through the hydraulic leveling device and a leveling measuring device; pasting force sensors to the equipment feet of the electromechanical equipment; turning on a pressure data acquisition box, reading the value and recording after the value is stable; and adjusting the shock absorber with different stiffness or adding a gasket according to the value displayed by the pressure data acquisition box corresponding to the equipment feet, so that the load value of each equipment foot deviates from the absolute average value of the calculated load of each equipment foot by not more than 2N. The position of the uneven load is adjusted through the hydraulic device, the shock absorber is not repeatedly measured, the replacement frequency of the shock absorber is reduced, and the installation performance of the shock absorber is improved.

Description

Technical Field

[0001] This invention relates to the installation of mechanical equipment in the field of marine engineering, and in particular to a method based on the measurement of the load uniformity of vibration dampers. Background Technology

[0002] As the primary means of suppressing equipment vibration transmission, the installation quality and post-installation maintenance of vibration dampers are of paramount importance. During shipbuilding, vibration dampers on various equipment mounts may suffer varying degrees of damage due to equipment eccentricity, uneven base levelness, and other reasons, reducing their service life and thus affecting the acoustic construction quality and construction progress of the ship.

[0003] To ensure the installation performance of equipment meets the acoustic requirements of ship construction, it is urgent to measure and adjust the load on the vibration dampers of the equipment's mounting feet after installation. Traditional vibration damper installation only requires measuring the gap between the damper and the base mounting surface to ensure installation performance. However, this method cannot guarantee the horizontal and vertical alignment of the equipment. Furthermore, due to equipment eccentricity or excessive tightening torque, each vibration damper can accelerate aging, thereby reducing performance and shortening service life. However, by using a vibration damper load uniformity measurement method, the load on each vibration damper can be effectively monitored, ensuring installation performance and extending the service life of the dampers. This avoids the need for continuous monitoring after installation, improving construction efficiency and effectiveness. Summary of the Invention

[0004] To address the shortcomings of existing technologies and the problems of poor installation performance and short service life caused by uneven load on vibration dampers, this invention provides a method for measuring the load uniformity of vibration dampers. This method utilizes a hydraulic device within a hydraulic leveling assembly to adjust the position of uneven loads and detect the deformation of the vibration damper, thus solving the technical problem of measuring the load uniformity of vibration dampers.

[0005] The solution adopted by this invention to solve the technical problem is:

[0006] A method for measuring the load uniformity of vibration dampers is provided, which utilizes a hydraulic leveling device. The hydraulic leveling device includes electromechanical equipment, a raft frame, equipment feet, a pressure data acquisition box, a hydraulic leveling device assembly, and vibration dampers. The electromechanical equipment is located on the raft frame, and the pressure data acquisition box is installed on the raft frame. Vibration dampers are evenly distributed between the equipment feet of the electromechanical equipment and the raft frame, and a hydraulic leveling device assembly is installed between the vibration dampers and the equipment feet.

[0007] The hydraulic leveling device includes a pressure sensor, a hydraulic and pressure sensor interface, a hydraulic device, and a shock absorber fastening support. The lower part of the hydraulic device is equipped with a shock absorber fastening support to fix the shock absorber, the upper part of the hydraulic device is equipped with a pressure sensor, and the side of the hydraulic device is equipped with a hydraulic and pressure sensor interface.

[0008] Includes the following steps:

[0009] 1) The electromechanical equipment and vibration dampers are placed on a horizontal plane using a hydraulic leveling device and a leveling measuring device;

[0010] 2) After the electromechanical equipment and vibration dampers are placed and secured, attach the pressure sensors to the feet of each piece of equipment.

[0011] 3) Turn on the pressure data acquisition box, and after the value stabilizes, read and record the value;

[0012] 4) Based on the values ​​displayed in the pressure data acquisition box corresponding to each equipment foot, adjust by replacing the vibration damper with one of different stiffness or adding shims, so that the deviation between the load value of each equipment foot and the absolute average value of the calculated load of each equipment foot is no more than 2N.

[0013] Positive effects:

[0014] 1. This method is simple to operate, greatly extends the service life of the vibration damper, and improves the acoustic performance of the equipment during operation;

[0015] 2. It avoids the need for repeated measurements of deformation after vibration damper installation, greatly improving shipbuilding efficiency;

[0016] 3. It reduces the frequency of vibration damper replacement, ensuring the performance of the vibration dampers after installation from the source;

[0017] 4. This method is also applicable to the adjustment and use of vibration dampers after installation in other industries.

[0018] Because this invention employs a hydraulic leveling device assembly with a hydraulic system, the position of uneven loads is adjusted via hydraulic means, thereby improving the acoustic installation performance of the vibration damper. It is suitable for application as a method for measuring the load uniformity of vibration dampers. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the technical solutions in 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. The description of the present invention is given for the purpose of illustration and description, and is not intended to be exhaustive or to limit the present invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0020] Figure 1 This is a schematic diagram of the hydraulic leveling device.

[0021] Figure 2 This is a front view of the hydraulic leveling device assembly;

[0022] Figure 3 Top view of the hydraulic leveling device assembly;

[0023] Figure 4 This is a side view of the hydraulic leveling device assembly.

[0024] In the diagram, 1. Mechanical and electrical equipment, 2. Raft frame, 3. Equipment feet, 4. Pressure data acquisition box, 5. Hydraulic leveling device assembly, 6. Vibration damper, 7. Pressure sensor, 8. Hydraulic and pressure sensor interface, 9. Hydraulic device, 10. Vibration damper fastening support. Detailed Implementation

[0025] 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 embodiments of the present invention, and not all embodiments. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0027] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0028] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0030] In the description of the embodiments in this application, the term "multiple" refers to two or more (including two). Similarly,

[0031] "Multiple sets" refers to two or more sets (including two sets), and "multiple tablets" refers to two or more tablets (including two tablets).

[0032] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0033] In the description of the embodiments in this application, unless otherwise expressly specified and limited, the technical term "installation" will be used.

[0034] Terms such as “connected,” “linked,” and “fixed” should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0035] As shown in the figure, the hydraulic leveling device includes electromechanical equipment 1, raft frame 2, equipment feet 3, pressure data acquisition box 4, hydraulic leveling device assembly 5, and vibration dampers 6; electromechanical equipment 1 is located on raft frame 2, and pressure data acquisition box 4 is installed on raft frame 2; vibration dampers 6 are evenly distributed between equipment feet 3 of electromechanical equipment 1 and raft frame 2, and hydraulic leveling device assembly 5 is installed between vibration dampers 6 and equipment feet 3;

[0036] The hydraulic leveling device assembly 5 includes a pressure sensor 7, a hydraulic and pressure sensor interface 8, a hydraulic device 9, and a shock absorber fastening support 10. The lower part of the hydraulic device 9 is provided with a shock absorber fastening support 10 to fix the shock absorber 6, the upper part of the hydraulic device 9 is provided with a pressure sensor 7, and the side of the hydraulic device 9 is provided with a hydraulic and pressure sensor interface 8. The hydraulic leveling device assembly 5 adjusts the equipment by adjusting the machine feet 3, and thus ultimately adjusts the equipment.

[0037] A method for measuring the load uniformity of a shock absorber, using a hydraulic leveling device, includes the following steps:

[0038] 1) Before installing the electromechanical equipment 1, use an electronic level and a flatness measuring instrument to measure the levelness and flatness of the raft frame 2 to ensure that the levelness and flatness of the installed electromechanical equipment 1 meet the installation requirements of the electromechanical equipment.

[0039] 2) Check the installation status of each shock absorber 6 to ensure there is no visible damage, glue separation, or scratches;

[0040] 3) Before installing the vibration damper 6, record the number of each vibration damper 6 and its corresponding static stiffness value.

[0041] 4) Place the hydraulic leveling device assembly 5 at the machine feet 3, aligning the center point of the hydraulic leveling device assembly 5 with the mounting hole on the vibration damper 6 on the same center line. Slowly raise the hydraulic device 9 to support the electromechanical equipment 1 and the machine feet 3, ensuring that all machine feet 3 on the electromechanical equipment 1 are on a horizontal plane. After the electromechanical equipment 1 and the vibration damper 6 are placed and secured, attach the pressure sensor 7 to each machine foot 3 of the electromechanical equipment 1.

[0042] 5) Connect the hydraulic and pressure sensor interface 8 to the pressure data acquisition box 4. After the load stabilizes, record the data from the pressure data acquisition box 4 as F1, F2, F3, F4… respectively; calculate… After calculation, observe whether there is data > 2N to determine whether the vibration damper 6 is under uneven load; if not, the load distribution is uniform and no adjustment is needed; if there is data > 2N, it proves that the load distribution is uneven and further testing is needed to adjust the pad height or vibration damper model.

[0043] 6) When installing the vibration damper 6 under uneven load conditions, use bolts to secure the lower part of the vibration damper 6 into the mounting hole of the raft 2, and use countersunk screws to secure the vibration damper fastening support 10 to the upper part of the vibration damper 6. The hydraulic device 9 is then used to... Uneven load location adjustment; such as here This indicates that the load is too high and the hydraulic device 9 needs to be lowered slowly, as shown here. This indicates that the load is relatively small and the hydraulic device 9 needs to be raised slowly. During the raising and lowering process, the data is recorded again every time the hydraulic device 9 changes its stroke by 0.1 mm, until...

[0044] 7) Measure whether the levelness and flatness of the mechanical and electrical equipment 1 meet the equipment installation requirements. If they do not meet the requirements, the vibration damper 6 with different stiffness needs to be replaced. If the vibration damper 6 bears a large load, select the vibration damper 6 with a larger static stiffness value for installation. Otherwise, select the vibration damper 6 with a smaller static stiffness value for installation until the levelness and flatness of the mechanical and electrical equipment 1 meet the equipment installation requirements.

[0045] 8) If the above methods still cannot achieve a uniform state, after selecting a vibration damper 6 with a suitable static stiffness value, add adjusting shims to the vibration damper 6 with a larger load or reduce adjusting shims to the vibration damper 6 with a smaller load, or simultaneously raise and lower the hydraulic device 9 until the deviation at each point is corrected.

[0046] 9) Record the stroke changes of hydraulic device 9, T1, T2, T3, T4..., remove hydraulic leveling device component 5, and adjust the thickness of the shims on damper 6, h1, h2, h3, h4... accordingly, to reach point n, n = 1, 2, 3, 4... Under actual uniform load, the required shim thickness is Hn = Tn + hn, Tn = T1, T2, T3, T4..., hn = h1, h2, h3, h4..., and finally tighten damper 6. At this time, damper 6 can achieve a uniform load state.

[0047] Finally, it should be noted that:

[0048] The above description is merely 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 measuring the load uniformity of a vibration damper, characterized in that: A hydraulic leveling device is applied, which includes electromechanical equipment (1), raft frame (2), equipment feet (3), pressure data acquisition box (4), hydraulic leveling device assembly (5), and vibration dampers (6); the electromechanical equipment (1) is located on the raft frame (2), and the pressure data acquisition box (4) is provided on the raft frame (2); vibration dampers (6) are evenly distributed between the equipment feet (3) of the electromechanical equipment (1) and the raft frame (2), and the hydraulic leveling device assembly (5) is provided between the vibration dampers (6) and the equipment feet (3); The hydraulic leveling device assembly (5) includes a pressure sensor (7), a hydraulic and pressure sensor interface (8), a hydraulic device (9), and a damper fastening support (10). The lower part of the hydraulic device (9) is provided with a damper fastening support (10) to fix the damper (6). The upper part of the hydraulic device (9) is provided with a pressure sensor (7). The side of the hydraulic device (9) is provided with a hydraulic and pressure sensor interface (8). The hydraulic leveling device assembly (5) adjusts the equipment by adjusting the machine feet (3). Includes the following steps: 1) The electromechanical equipment (1) and the vibration damper (6) are placed on a horizontal plane by means of a hydraulic leveling device and a leveling measuring device; 2) After the electromechanical equipment (1) and the vibration damper (6) are placed and secured, the pressure sensor (7) is attached to the machine feet (3) of each piece of electromechanical equipment (1); 3) Turn on the pressure data acquisition box (4), and after the value stabilizes, read and record the value; 4) Based on the values ​​displayed in the pressure data acquisition box (4) corresponding to each equipment foot (3), adjust by replacing the damper (6) with a different stiffness or adding shims, so that the deviation between the load value of each equipment foot (3) and the absolute average value of the load calculated for each equipment foot (3) is no greater than 2N. In step 4), under uneven load conditions, when installing the vibration damper (6), the lower part of the vibration damper (6) is fastened to the mounting hole of the raft frame (2) with bolts, and the vibration damper fastening support (10) is fastened to the upper part of the vibration damper (6) with countersunk screws. The hydraulic device (9) is used to control the |Fx- | > 2N Uneven Load Position Adjustment; such as Fx > This indicates that the load is too large and the hydraulic device (9) needs to be lowered slowly, such as Fx < This indicates that the load is small and the hydraulic device (9) needs to be raised slowly. During the raising and lowering process, the hydraulic device (9) records the data again every time the stroke changes by 0.1 mm, until |F1- |、|F2- |、|F3- |、|F4- ︱… all ≤ 2N.

2. The method for measuring the load uniformity of a vibration damper according to claim 1, characterized in that: In step 3), the hydraulic and pressure sensor interface (8) is connected to the pressure data acquisition box (4). After the load stabilizes, the data from the pressure data acquisition box (4) are recorded as F1, F2, F3, F4… respectively; and |F1- |、|F2- |、|F3- |、|F4- After calculation, observe whether there is data > 2N to determine whether the damper (6) is under uneven load; if not, the load distribution is uniform and no adjustment is needed; if there is data > 2N, it proves that the load distribution is uneven and the test needs to be continued to adjust the pad height plate or the damper model.

3. The method for measuring the load uniformity of a vibration damper according to claim 1, characterized in that: In step 4), the levelness and flatness of the electromechanical equipment (1) are measured to see if they meet the equipment installation requirements. If they do not meet the requirements, the vibration damper (6) with different stiffness needs to be replaced. If the vibration damper (6) bears a large load, the vibration damper (6) with a larger static stiffness value is selected for installation. Otherwise, the vibration damper (6) with a smaller static stiffness value is selected for installation until the levelness and flatness of the electromechanical equipment (1) meet the equipment installation requirements.

4. The method for measuring the load uniformity of a vibration damper according to claim 1, characterized in that: If, in step 4), a uniform state still cannot be achieved, after selecting a damper (6) with a suitable static stiffness value, add adjusting shims to the damper (6) with a larger load or reduce adjusting shims to the damper (6) with a smaller load, or simultaneously raise and lower the hydraulic device (9) until the deviation at each point is equal to |Fx- |≤2N.

5. The method for measuring the load uniformity of a vibration damper according to claim 1, characterized in that: In step 4), the stroke changes of the hydraulic device (9) are recorded as T1, T2, T3, T4..., the hydraulic leveling device assembly (5) is removed, and the thickness of the shims on the damper (6) is adjusted as h1, h2, h3, h4... to reach point n, n=1, 2, 3, 4... Under actual uniform load, the required shim thickness Hn=Tn+hn, Tn=T1, T2, T3, T4..., hn=h1, h2, h3, h4..., and finally the damper (6) is tightened. At this time, the damper 6 reaches the uniform load state.

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